text: CameraMatics opens new Sales Hub in London. Vehicle camera and GPS tracking technology specialist CameraMatics has opened a new London sales and support office as part of its continued expansion.. The new Sales Hub in London will help meet demand for the firm’s vehicle camera and GPS tracking solution. Announced just weeks after the company rebranded from ProVision and the opening of its US operation, the new office joins the existing UK base in Dartford, three locations in Ireland, including the Dublin Head Office..”. The firm’s solution enables customers to manage fleet and driver risk through a one-platform, real-time solution which uses a combination of traditional telematics and GPS tracking along with in-vehicle video camera vision, collision avoidance technology and smart driver and fleet manager apps. This is backed by a cloud-based Command Centre and apps.. O’Flaherty added: .”

textbook:
Lesson: Introduction to Telematics and GPS Tracking

## Section 1: What is Telematics and GPS Tracking?

Telematics is the integration of telecommunications and informatics technologies to transmit information via wireless networks. GPS (Global Positioning System) tracking is a method of determining the location of a person or object using satellite-based technology. In the context of vehicles, telematics and GPS tracking are used to monitor and manage fleet and driver risk.

## Section 2: How does Telematics and GPS Tracking work?

Telematics and GPS tracking work together to provide real-time information about a vehicle's location, speed, and behavior. A device called a telematics box is installed in the vehicle, which collects data from various sensors such as GPS, accelerometer, and gyroscope. This data is then transmitted wirelessly to a central server, where it is analyzed and presented to fleet managers and drivers through a web-based platform or mobile app.

## Section 3: Why is Telematics and GPS Tracking important?

Telematics and GPS tracking are essential tools for managing fleet and driver risk. They help fleets improve efficiency, reduce fuel consumption, and minimize accidents. By monitoring driver behavior, fleet managers can identify areas for improvement and implement training programs to improve safety and reduce costs. Additionally, GPS tracking allows fleets to optimize routes and reduce downtime, leading to increased productivity and customer satisfaction.

## Section 4: Practical Examples and Real-World Scenarios

One practical example of how telematics and GPS tracking can be used is in delivery vehicles. A delivery company can use GPS tracking to optimize routes and ensure that drivers are taking the most efficient routes possible. Additionally, by monitoring driver behavior, the company can identify areas where drivers may be speeding or taking unnecessary detours, leading to cost savings and improved safety.

Another real-world scenario is in the construction industry. GPS tracking can be used to monitor the location and movement of heavy equipment, ensuring that they are not stolen or misused. Additionally, by monitoring driver behavior, construction companies can identify areas where operators may be operating equipment improperly, leading to safety hazards and costly repairs.

## Section 5: Conclusion

Telematics and GPS tracking are essential tools for managing fleet and driver risk, leading to increased efficiency, reduced costs, and improved safety. By understanding the principles behind these technologies and their practical applications, individuals can gain valuable skills in managing fleets and optimizing operations.


text: I’m heading into Vancouver for a few days which is not a by-choice kind of thing. I’ve got meetings, dinners and a trip to the Zendo planned which is all fine, but most days I would rather just be in my studio.. On the weekend I finished a new bag, which has been in the works since the late fall when I hand stitched the outside panels and made the boro piece which is now serving as an outside pocket.. All materials in this piece except the lining are leftover from sewing garments for myself and my partner.. Inside I installed a zip pocket and a cel phone pocket. I also hella interfaced everything so this bag has a lot of structure.. I carry a tote around as my main purse most of the time because I’ve so often got a change of clothes for the gym, an iPad, or a knitting project with me.. Since finishing it on Sunday, I’ve transferred everything into this bag and it’s travelling into the city with me today. A new catchall that reminds me of my studio wherever I go.. Recent comments

source: refinedweb

textbook:
Lesson: Introduction to Sewing

### Section 1: Theoretical Concepts
Sewing is the act of fastening or attaching two pieces of fabric together with thread using a needle and a sewing machine. It involves several steps, including cutting, marking, measuring, and stitching. The basic techniques of sewing can be applied to various projects, such as making clothing, home decor, and accessories.

### Section 2: Practical Examples
To demonstrate the process of sewing, let's create a simple pillowcase. First, we need to gather the following materials:
- Fabric (at least 2 yards)
- Thread
- Scissors
- Sewing machine or hand needle
- Pillow form

1. Lay the fabric right side up and place the pillow form on top.
2. Cut two pieces of fabric, each larger than the pillow form.
3. Place the pillow form in the center of one piece of fabric and fold the edges towards the center, leaving a 1-inch seam allowance. Pinch the corners to create a crease.
4. Repeat step 3 with the other piece of fabric.
5. Sew around the edges of both pieces, leaving a small opening for turning.
6. Trim the seam allowance and turn the pillowcase right side out.
7. Press the pillowcase flat and sew the opening closed.

### Section 3: Increasing Difficulty Level
Once you have mastered the basic techniques of sewing, you can try more complex projects such as creating clothing or quilts. To make a simple skirt, follow these steps:

1. Choose a pattern or design and gather the necessary materials.
2. Cut two pieces of fabric, each larger than the pattern pieces.
3. Sew the pattern pieces together, leaving a small opening for turning.
4. Turn the skirt right side out and press.
5. Sew the opening closed.
6. Add any desired features such as pockets or a waistband.

### Glossary
- Fabric: A material used to make clothing, home decor, and accessories.
- Seam allowance: The extra fabric left around the edge of a seam to allow for sewing and pressing.
- Sewing machine: A device that uses a needle and thread to stitch fabric together quickly and efficiently.
- Hand needle: A thin, sharp tool used to stitch fabric by hand.

### Conclusion
Sewing is a valuable skill that can save money and create unique items. By following the steps and techniques outlined in this lesson, you can successfully create your own clothing, home decor, and accessories. With practice and patience, you will become proficient in this craft and be able to apply your skills to various projects.


text: A merchant selling from a tent on Tatooine. Merchants, also called traders, were people who sold and bought various products. Although some merchants did business legally, many did business illegally. Traders could also be adept at constructing a number of goods, including weapons, furniture, and droids. Traders who took part in constructing goods would occasionally specialize in a specific field, such as munitions, structures, domestic goods, or engineering.. Behind the scenes[]. In the game Star Wars Galaxies, merchants were a playable profession prior to the New Game Enhancements of 2005. After the changes, the merchant profession was removed, and merged with the newly created trader profession. In the game, traders were the basis of most of the in-game economy.

textbook:
Lesson: Introduction to Business and Economics

### Section 1: What is Business and Economics?
Business and economics are two important subjects that help us understand how people interact with each other and the world around them. Business refers to the activity of producing, buying, and selling goods or services, while economics is the study of how societies allocate scarce resources to meet unlimited wants and needs.

### Section 2: Understanding Business and Economics
To understand business and economics, we need to learn about the different types of businesses and economic systems. There are different types of businesses such as sole proprietorships, partnerships, corporations, and cooperatives. Similarly, there are different types of economic systems such as traditional, command, market, and mixed economies.

### Section 3: Applying Business and Economics Concepts
Now that we know what business and economics are, let's look at how they work in the real world. For example, when you go to the store to buy groceries, you are participating in the market economy. The store owner buys the food from farmers, processes it in factories, and then sells it to you. This is how the production, distribution, and consumption of goods and services happen in an economy.

### Glossary
- Business: The activity of producing, buying, and selling goods or services
- Economics: The study of how societies allocate scarce resources to meet unlimited wants and needs
- Sole proprietorship: A type of business owned by one person
- Partnership: A type of business owned by two or more people
- Corporation: A type of business that is legally separate from its owners
- Cooperative: A type of business owned by members who share in the profits or benefits
- Traditional economy: An economic system where people rely on customs and traditions to meet their needs
- Command economy: An economic system where the government controls everything
- Market economy: An economic system where supply and demand determine prices
- Mixed economy: An economic system that combines elements of market and command economies

### Conclusion
By studying business and economics, we can better understand how the world works. We can learn about the different types of businesses and economic systems, and how they affect our daily lives. By applying these concepts, we can make informed decisions about how we spend our money and how we participate in the economy.


text: Other Names: 이상윤Artist Website. "My work symbolizes a state of being. I communicate cross-culturally, because of my status as an Asian American. Many of my works contain everyday items which provide physical evidences to reinforce our present existence, but by visual manipulation of those very objects, the validity of such evidences will be questioned.. An art work must compel the viewers to communicate and create certain languages within themselves. The objective is to open doors is to open doors and reach everyone to create free dialogue. I attempt to achieve this through partly using cross-cultural mediums that are inherently close to my sensibilities such as rice, charcoal, and Asian silverware. By using typical store bought materials in conjunction with other traditional art mediums, I am aiming to question the initial thought of our perception and conception of art.. As an artist I strive to stimulate viewers and compel them to question beyond what is obvious.". Jason S. Yi, Artist Statement, [1995]

textbook:
Lesson Title: Understanding Artist Statements

Introduction:
An artist statement is a written explanation of an artist's work. It helps viewers understand the artist's inspiration, process, and message behind their art. In this lesson, we will learn how to read and interpret artist statements, analyze different types of statements, and apply what we learn to real-world scenarios.

Section 1: Understanding Artist Statements

Topic 1: What is an Artist Statement?
- An artist statement is a written explanation of an artist's work.
- It provides insight into the artist's creative process, inspiration, and message behind their art.
- It helps viewers understand the artist's perspective and interpretation of their work.

Topic 2: Types of Artist Statements
- There are different types of artist statements, including biographical, philosophical, and technical.
- A biographical statement explains the artist's background, education, and experiences that influenced their work.
- A philosophical statement outlines the artist's beliefs, values, and ideas that drive their artistic practice.
- A technical statement describes the materials, techniques, and processes used in creating the artwork.

Topic 3: Analyzing Artist Statements
- Look for key elements such as the artist's inspiration, creative process, and message behind their work.
- Consider the tone and style of the statement to understand the artist's personality and perspective.
- Compare and contrast different artist statements to identify common themes and differences in approach.

Section 2: Practical Examples

Example 1: Biographical Statement
- "As a first-generation American, my work explores the complexities of identity and belonging. Growing up, I struggled to reconcile my Korean heritage with my American upbringing. Through my art, I aim to bridge the gap between cultures and promote understanding and acceptance."

Discussion:
- This statement highlights the artist's personal experience as a first-generation American and how it influences their work.
- The focus on identity and belonging suggests that the artist's work may address issues of cultural identity and assimilation.
- The goal of promoting understanding and acceptance indicates that the artist's work may have a social or political message.

Example 2: Philosophical Statement
- "My work is an exploration of the human condition. I am interested in the ways in which we interact with the world around us and how our experiences shape who we become. Through my art, I hope to provoke thought and inspire change."

Discussion:
- This statement emphasizes the artist's interest in the human experience and the potential for art to inspire change.
- The use of words like "exploration" and "interested" suggests that the artist's work may be experimental or open-ended.
- The goal of provoking thought and inspiring change implies that the artist's work may have a transformative or revolutionary message.

Example 3: Technical Statement
- "In my work, I use a combination of traditional painting techniques and digital media to create a unique visual language. I often incorporate unconventional materials such as rice and charcoal to add depth and texture to my pieces."

Discussion:
- This statement focuses on the artist's process and materials, providing insight into their creative approach.
- The use of traditional painting techniques and digital media suggests that the artist is interested in blending old and new media.
- The mention of unconventional materials such as rice and charcoal indicates that the artist may be interested in exploring non-traditional forms of art.

Section 3: Applying Skills to Real-World Scenarios

Topic 1: Analyzing Artist Statements in Galleries and Museums
- When visiting galleries and museums, read the artist statements to gain a deeper understanding of the artist's work.
- Look for common themes and motifs across different pieces to see if they align with the artist's message.
- Compare and contrast different artist statements to identify similarities and differences in approach.

Topic 2: Writing Your Own Artist Statement
- Reflect on your personal experiences, beliefs, and values to determine what drives your artistic practice.
- Consider the materials, techniques, and processes you use in your work and how they contribute to your overall message.
- Keep your statement concise and clear, focusing on the most important aspects of your work.

Conclusion:
Understanding artist statements is an essential skill for anyone interested in art. By analyzing different types of statements and applying what we learn to real-world scenarios, we can gain a deeper appreciation for the art we encounter.


text: Prior to joining Bluewolf, I worked in the Financial Services industry in a variety of positions within the Commercial sector. I enjoy project work and the satisfaction of bringing many hours of discussion, thoughts and ideas to fruition with a successful implementation.. Working for Bluewolf allows employees the creativity to explore many solutions for a variety of customer challenges without the normal corporate bureaucracy.. There is a sense of team camaraderie and an adventurous spirit that generates forward thinking and new ideas.. Implementation, Strategic Consulting. Hiking

textbook:
Lesson: Project Management for Kids

Introduction:
Project management is the process of planning, organizing, and overseeing the execution of a project from start to finish. It involves breaking down a project into smaller tasks, assigning responsibilities, and managing resources to meet deadlines and achieve goals. In this lesson, we will learn about the basics of project management and how it can be applied to everyday activities.

Section 1: Understanding Project Management

**Theoretical Concept:** A project is a temporary endeavor with a defined beginning and end, aimed at achieving a specific goal or result.

**Question and Answer:** What is a project?
Answer: A project is a short-term activity with a specific objective, usually completed within a certain time frame and budget.

**Definition of Purpose:** The purpose of project management is to ensure that all aspects of a project are coordinated and completed on time, within scope, and within budget.

**Practical Example:** Let's say you want to plan a birthday party for your friend. You will need to decide on a theme, invite guests, choose a venue, organize food and drinks, and set up decorations. All these tasks need to be completed before the party starts, and you will need to manage your time, money, and resources effectively to make sure everything is ready on time.

Section 2: Creating a Project Plan

**Theoretical Concept:** A project plan is a document that outlines the goals, tasks, timeline, and resources needed to complete a project successfully.

**Question and Answer:** What is a project plan?
Answer: A project plan is a roadmap that helps you stay organized and focused as you work towards completing your project.

**Definition of Purpose:** The purpose of a project plan is to provide a clear and structured approach to achieving your project goals.

**Practical Example:** For our birthday party, we can create a project plan by listing all the tasks that need to be completed, such as sending invitations, buying decorations, and setting up the venue. We can also assign deadlines and responsibilities to each task, and estimate the time and cost involved.

Section 3: Managing Resources and Risks

**Theoretical Concept:** Resource management involves identifying and allocating the necessary resources (such as people, equipment, and funds) to complete a project successfully. Risk management involves identifying potential risks and developing strategies to mitigate them.

**Question and Answer:** What is resource management?
Answer: Resource management is the process of identifying and allocating the necessary resources to complete a project successfully.

**Definition of Purpose:** The purpose of resource management is to ensure that you have enough resources to complete your project on time and within budget.

**Practical Example:** For our birthday party, we need to allocate resources such as money, time, and energy to complete all the tasks on our project plan. We also need to identify potential risks, such as bad weather or unexpected expenses, and develop contingency plans to deal with them.

Conclusion:
In this lesson, we learned about the basics of project management and how it can be applied to everyday activities. By creating a project plan, managing resources, and identifying risks, we can successfully complete our projects and achieve our goals. Whether you're planning a birthday party or working on a larger project, the principles of project management can help you stay organized, focused, and successful.

Glossary:
- Project: A temporary endeavor with a defined beginning and end, aimed at achieving a specific goal or result.
- Project Management: The process of planning, organizing, and overseeing the execution of a project from start to finish.
- Project Plan: A document that outlines the goals, tasks, timeline, and resources needed to complete a project successfully.
- Resource Management: The process of identifying and allocating the necessary resources (such as people, equipment, and funds) to complete a project successfully.
- Risk Management: The process of identifying potential risks and developing strategies to mitigate them.


text:
A new Melbourne Metro Rail station in North Melbourne is expected to trigger $7 billion in urban development and transform the area's desolate industrial land.

But it is unclear exactly what the multibillion-dollar apartment and office suburb of Arden Macaulay will look like, or how the government plans to retain a slice of the enormous profits that are expected to flow from its transformation.

On Friday Prime Minister Malcolm Turnbull told the state government that it needed to do more work on its business case for the signature Metro project, handing over just $10 million in federal cash to help.

"What is underdone in that business plan is the way [governments] are able to capture some of the very considerable value that will be created in property values by the construction of that infrastructure," Mr Turnbull said.

source: minipile

textbook:
## Lesson: Urban Development and Real Estate Valuation
### Section 1: Introduction
Urban development refers to the process of improving the physical, social, and economic structure of cities. This lesson will focus on the impact of urban development on real estate valuation. We will explore how new infrastructure projects like the Melbourne Metro Rail can transform desolate industrial lands into thriving commercial hubs, increasing property values and driving economic growth.
### Section 2: The Impact of Urban Development on Real Estate Valuation
Urban development has a significant impact on real estate valuation. When new infrastructure projects like the Melbourne Metro Rail are built, they can transform desolate industrial lands into thriving commercial hubs. This increase in demand for property in the area leads to an increase in property values. Additionally, urban development can drive economic growth by creating new job opportunities and attracting businesses to the area.
### Section 3: The Role of Government in Capturing Value from Urban Development
Governments play a crucial role in capturing value from urban development. They can do this by implementing policies that encourage private investment in the area while also ensuring that the community benefits from the increased property values. For example, governments can use tax incentives to attract businesses to the area or create affordable housing units for low-income residents.
### Section 4: Practical Examples
Let's consider a real-world scenario. Suppose a city is planning to build a new subway line that will pass through a run-down industrial neighborhood. The city expects that the new subway line will increase property values in the area by 50%. How can the city capture some of this increased value?
One option is to implement a tax increment financing (TIF) district. In a TIF district, the increase in property tax revenue generated by the new development is used to finance public improvements in the area, such as new parks or public facilities. This approach allows the city to capture some of the increased value without raising taxes on existing residents.
### Section 5: Conclusion
In conclusion, urban development can have a significant impact on real estate valuation. Governments play a crucial role in capturing value from urban development by implementing policies that encourage private investment while also ensuring that the community benefits from the increased property values. By understanding the impact of urban development on real estate valuation, we can make informed decisions about how to invest in property and how to create sustainable communities that benefit everyone.


text: What is this series? – Series 29. This is a type of food items shaped into balls. The colour is original colour after it is being cooked. The original raw form is rather spiky with a very hard skin. It… Read the rest. On 25-7-2013, Chicken rice served with sweet kernel corn and mushroom soup.. As I have not cook chicken rice for quite a while, I have decided just to have a one dish dinner – Hainanese Chicken Rice. You can… Read the rest. On 24-July 2013, white rice served with:. For tonight’s dinner, there is nothing to shout about. When I am preparing dinner, my nice… Read the rest. What is this series ? – Series 28. As the title implies, it is a type of our food which is solid, meaning, it is not any soup or liquid food at all. It can be eaten raw or cooked.…)

textbook:
Lesson Title: Introduction to Mathematical Abstraction

Introduction:
Mathematical abstraction is the process of removing unnecessary details from a problem to make it easier to solve. It involves breaking down complex problems into simpler parts that can be analyzed and understood more easily. In this lesson, we will learn about the basics of mathematical abstraction, including how to identify and remove unnecessary details, how to simplify complex problems, and how to apply mathematical abstraction to real-world scenarios.

Section 1: What is Mathematical Abstraction?

Topic 1.1: Definition of Mathematical Abstraction
- Mathematical abstraction is the process of simplifying a problem by removing unnecessary details.
- It involves breaking down complex problems into simpler parts that can be analyzed and understood more easily.

Topic 1.2: Example of Mathematical Abstraction
- Suppose you are given a problem that involves many variables and complex equations.
- To simplify the problem, you can remove the unnecessary details and focus only on the relevant variables and equations.
- This process is called mathematical abstraction.

Section 2: How to Apply Mathematical Abstraction?

Topic 2.1: Identify Necessary and Unnecessary Details
- To apply mathematical abstraction, you need to identify the necessary and unnecessary details of the problem.
- Necessary details are those that are essential to solving the problem, while unnecessary details can be removed without affecting the solution.

Topic 2.2: Simplify Complex Problems
- Once you have identified the necessary details, you can simplify the problem by removing the unnecessary ones.
- This will help you focus on the most important aspects of the problem and make it easier to solve.

Topic 2.3: Apply Mathematical Abstraction to Real-World Scenarios
- Mathematical abstraction can also be applied to real-world scenarios, such as business problems or scientific research.
- By removing unnecessary details, you can focus on the most important aspects of the problem and come up with more effective solutions.

Section 3: Practice Exercises

Exercise 1: Identify the necessary and unnecessary details of the following problem:

Problem: A company wants to increase its sales by 20% next year. The company sold $10 million worth of products last year. How many products should the company sell next year to achieve its goal?

Answer: Necessary details: The company wants to increase its sales by 20%. The company sold $10 million worth of products last year.
Unnecessary details: The name of the company, the specific products sold, the location of the company.

Exercise 2: Simplify the following problem by removing unnecessary details:

Problem: A company wants to increase its sales by 20% next year. The company sold $10 million worth of products last year. How many products should the company sell next year to achieve its goal?

Simplified Problem: The company wants to increase its sales by 20%. It sold $10 million worth of products last year.

Conclusion:
In this lesson, we learned about the basics of mathematical abstraction, including how to identify and remove unnecessary details, how to simplify complex problems, and how to apply mathematical abstraction to real-world scenarios. By practicing these techniques, we can become better problem solvers and thinkers.

Glossary:
- Mathematical Abstraction: The process of simplifying a problem by removing unnecessary details.
- Necessary Details: Details that are essential to solving the problem.
- Unnecessary Details: Details that can be removed without affecting the solution.
- Simplify: To make something easier to understand or solve by removing unnecessary details.
- Real-World Scenarios: Problems that occur in everyday life or in practical situations.


text:
Ethical issues in infertility.
Infertility is a global medico-socio-cultural problem with gender-based suffering particularly in developing countries. Conventional methods of treatment for infertility do not usually raise ethical concerns. However, assisted reproductive technology (ART) has initiated considerable ethical debate, disagreement, and controversy. There are three ethical principles that provide an ethical basis for ART: the principle of liberty, principle of utility, and principle of justice. Medical ethics are based on the moral, religious, and philosophical ideas and principles of the society and are influenced by economics, policies, and law. This creates tension between the principles of justice and utility, which can result in disparity in the availability of and access to ART services between the rich and the poor. The moral status of the embryo is the key for all the ethical considerations and law regarding ART in different societies. This has resulted in cross-border ART. Conscientious objection of healthcare providers should not deprive couples from having access to a required ART service.

textbook:
Lesson: Ethical Issues in Infertility
Introduction:
Infertility is a global issue that affects many people around the world. While there are many medical treatments available to help people overcome infertility, some of these treatments raise ethical concerns. In this lesson, we will explore the ethical issues surrounding infertility treatments, particularly those involving assisted reproductive technology (ART).
Core Value:
The core value of this lesson is to understand the ethical issues surrounding infertility treatments and to consider the different perspectives involved.
Section 1: Introduction to Ethical Issues in Infertility Treatments
Topic 1: The Principle of Liberty
Question: What is the principle of liberty and how does it relate to infertility treatments?
Answer: The principle of liberty states that individuals have the right to make their own decisions about their healthcare, including infertility treatments. This means that patients have the right to choose which treatments they want to undergo and which ones they do not want to undergo.
Topic 2: The Principle of Utility
Question: What is the principle of utility and how does it relate to infertility treatments?
Answer: The principle of utility states that medical treatments should be effective and beneficial for the patient. In the case of infertility treatments, this means that the treatments should help the patient become pregnant and have a healthy baby.
Topic 3: The Principle of Justice
Question: What is the principle of justice and how does it relate to infertility treatments?
Answer: The principle of justice states that medical treatments should be available and accessible to all people, regardless of their social or economic status. In the case of infertility treatments, this means that the treatments should be affordable and available to everyone who needs them.
Section 2: The Moral Status of the Embryo
Topic 1: The Moral Status of the Embryo
Question: What is the moral status of the embryo and how does it relate to infertility treatments?
Answer: The moral status of the embryo is a key issue in the debate over infertility treatments. Some people believe that the embryo has a moral status that should be protected, while others believe that the embryo is just a collection of cells that can be used however the patient wishes.
Topic 2: The Law Regarding ART in Different Societies
Question: How does the law regarding ART differ in different societies?
Answer: The law regarding ART varies from country to country and is influenced by many factors, including religion, culture, and politics. In some societies, ART is strictly regulated, while in others it is freely available to anyone who wants it.
Section 3: Critical Thinking Exercise
Topic 1: Should ART be available to everyone who wants it, or should it be reserved for certain groups of people?
Question: Why or why not? Use evidence from the lesson to support your answer.
Answer: Some people argue that ART should be reserved for certain groups of people, such as those who are at high risk for genetic disorders or those who are unable to conceive naturally. Others argue that ART should be available to everyone who wants it, as long as they can afford it. There is no clear answer to this question, as both arguments have merit. However, it is important to consider the potential consequences of making ART available to everyone, such as the potential for overpopulation and the impact on resources.
Conclusion:
In conclusion, the ethical issues surrounding infertility treatments are complex and multifaceted. By understanding the different principles involved and considering the potential consequences of our actions, we can make informed decisions about our healthcare. By applying the principles of liberty, utility, and justice, we can ensure that infertility treatments are available and accessible to everyone who needs them, while also protecting the rights and well-being of all involved.
Glossary:
- Assisted Reproductive Technology (ART): A group of medical procedures used to help people become pregnant, including in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI).
- Embryo: The early stage of development of a fetus, typically up to eight weeks after fertilization.
- Principle of Liberty: The idea that individuals have the right to make their own decisions about their healthcare.
- Principle of Utility: The idea that medical treatments should be effective and beneficial for the patient.
- Principle of Justice: The idea that medical treatments should be available and accessible to all people, regardless of their social or economic status.


text: Add company into catalog:Registration / Why register?. ATA Scientific Pty Ltd. About Company. ATA is an Australian company that supplies and services scientific instrumentation for the production of sub-micron emulsions and for the measurement of nano particle size and zeta potential. Avenstin high pressure homogenisers with dynamic homogenising valve produce sub-micron emulsions with narrow particle size distributions. The range of covers throughput from lab to full production with guaranteed scale up. Nanoparticle sizing and zeta potential are measured by the Malvern Zetasizer-nano series, using the principle of Dynamic Light Scattering. Nano-invasive backscatter optics provides exceptional sensitivity over the particle size range of 0.6 to 6000 nm.. Services. Particle Sizing, Spectroscopy, Spectrophotometers, Rheology, Zeta Potential Measurement, Emulsion Homogenising, Cell and Particle Imaging, Nano particle sizing,. Sales Contact. Mr Tony McDonagh. Manager

textbook:
Lesson: Introduction to Businesses and their Products/Services

### Section 1: Theoretical Concepts

In this lesson, we will learn about businesses and their products/services. We will explore what a business is, what it does, and how it operates.

**Question:** What is a business?
**Answer:** A business is an organization that provides goods or services to customers in exchange for money. It can be a small local shop or a large corporation with operations worldwide.

**Question:** What does a business do?
**Answer:** A business produces and sells products or provides services to its customers. It also tries to make a profit by charging more for its products or services than it pays to produce them.

**Question:** How does a business operate?
**Answer:** A business operates by following a set of steps called the "production process." This process includes finding raw materials, transforming them into finished products, and delivering the products to customers. A business may also need to market its products and services to attract customers and compete with other businesses.

### Section 2: Practical Examples

Now let's look at an example of a business and its products/services.

**Company:** ATA Scientific Pty Ltd.
**About Company:** ATA is an Australian company that supplies and services scientific instrumentation for the production of sub-micron emulsions and for the measurement of nano particle size and zeta potential.
**Products/Services:** Avenstin high pressure homogenisers with dynamic homogenising valve produce sub-micron emulsions with narrow particle size distributions. The range of covers throughput from lab to full production with guaranteed scale up. Nanoparticle sizing and zeta potential are measured by the Malvern Zetasizer-nano series, using the principle of Dynamic Light Scattering. Nano-invasive backscatter optics provides exceptional sensitivity over the particle size range of 0.6 to 6000 nm.

**Question:** What does ATA Scientific Pty Ltd. do?
**Answer:** ATA Scientific Pty Ltd. supplies and services scientific instrumentation for the production of sub-micron emulsions and for the measurement of nano particle size and zeta potential.

**Question:** Who is the target audience for ATA Scientific Pty Ltd.'s products/services?
**Answer:** ATA Scientific Pty Ltd.'s products/services are targeted towards companies that require precise measurements of particle size and zeta potential.

### Section 3: Self-Debating Discussions

Now let's engage in a self-debating discussion on the importance of businesses and their products/services.

**Topic:** The Importance of Businesses and their Products/Services

**Question:** Why are businesses important to society?
**Answer:** Businesses are important to society because they provide goods and services that people need and want. They create jobs, contribute to economic growth, and help improve the standard of living for people around the world.

**Question:** How do businesses benefit society?
**Answer:** Businesses benefit society by providing employment opportunities, generating tax revenues, and contributing to technological advancements. They also help create a competitive marketplace that drives innovation and encourages companies to produce higher-quality products at lower prices.

**Question:** What role do businesses play in the global economy?
**Answer:** Businesses play a crucial role in the global economy by driving innovation, creating wealth, and promoting trade. They help create jobs, increase productivity, and contribute to economic growth.

### Glossary

- **Business:** An organization that provides goods or services to customers in exchange for money.
- **Product:** A good or service that is bought and sold for a profit.
- **Service:** An intangible product that is provided to customers and usually cannot be stored or resold.
- **Profit:** The difference between the cost of producing a product or providing a service and the price charged for it.
- **Production:** The process of creating or manufacturing a product from raw materials.
- **Marketing:** The activity and process of creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.

### Conclusion

In this lesson, we learned about businesses and their products/services. We explored what a business is, what it does, and how it operates. We also looked at an example of a business and its products/services and engaged in a self-debating discussion on the importance of businesses and their products/services. By understanding these concepts, we can better appreciate the role that businesses play in our economy and society.


text: - Apple ». - iPad ». - Apple iPad Air 2 ». - Compatible With: iPad Air 2. -. - For Apple iPad Air 2 Rear Facing Camera Replacement - Grade S+. Features:. This iPad Air 2 Rear Facing Camera does not include the camera lens.. This iPad Air 2 Back Camera is a brand new original replacement.. This Back Facing Camera is compatible with iPad Air 2 only.. How to Install / Tips:. Please choose the right part before placing an order.. Please try to handle the repair or replacement work in a dry and dust free environment without direct sunlight.. Special tooling is required when disassembling and reassembling the iPad Air 2 Rear Camera.. The installation of any new parts should be done by a qualified person. ETS is not responsible for any damage caused during installation.. - Customer also bought

textbook:
Lesson: How to Replace the Rear-Facing Camera on an iPad Air 2

### Introduction
In this lesson, we will learn how to replace the rear-facing camera on an iPad Air 2. We will cover the following topics:

1. Identifying the parts and tools needed for the repair
2. Steps to follow when replacing the rear-facing camera
3. Troubleshooting common issues that may arise during the repair

### Parts and Tools Needed
Before beginning the repair, you will need the following parts and tools:

- iPad Air 2
- Rear-facing camera (Grade S+)
- Precision screwdriver set
- Suction cup kit
- Microfiber cloth
- Isopropyl alcohol (IPA) or rubbing alcohol
- Antistatic gloves

### Steps to Follow
1. Gather all necessary parts and tools.
2. Turn off the iPad Air 2 and disconnect it from any power sources.
3. Use the suction cup kit to create a stable, non-slip surface on which to work.
4. Apply antistatic gloves to prevent static electricity from damaging the device.
5. Using the precision screwdriver set, remove the screws securing the rear-facing camera in place.
6. Gently pry the rear-facing camera away from the iPad Air 2 using a suction cup or your fingernail.
7. Remove the old rear-facing camera and clean the area with a microfiber cloth and IPA or rubbing alcohol.
8. Insert the new rear-facing camera into the iPad Air 2 and secure it in place using the removed screws.
9. Turn on the iPad Air 2 and test the rear-facing camera to ensure it is functioning properly.

### Troubleshooting
If you encounter any issues during the repair, try the following troubleshooting steps:

- Make sure you have all the necessary parts and tools before beginning the repair.
- Double-check that you have removed all of the screws securing the rear-facing camera in place before attempting to pry it away.
- If the rear-facing camera does not seem to be functioning properly after installation, try cleaning the area again with IPA or rubbing alcohol.

### Conclusion
By following these steps, you should be able to successfully replace the rear-facing camera on an iPad Air 2. Remember to take your time, follow the instructions carefully, and use caution when handling sensitive electronic components. Good luck!


text: Education is a vital process that enables pupils and students to acquire knowledge and skills that can earn them a living and a respectable life. Within most education systems are measures such as user charges and cost recovery. Continue reading “Education is a vital process”. Category: free essay. High Scool writing vs. College writing. Understanding College English. Continue reading “High Scool writing vs. College writing”. Purdue Owl Essay.. Continue reading “Starting Basics for Writing Essays”

textbook:
## Lesson 1: Introduction to Education
In this lesson, we will learn about the importance of education and its role in society. We will also explore the different levels of education and their purposes.
## Section 1: Importance of Education
Education is a crucial part of our lives. It helps us to learn new things, develop our skills, and become responsible citizens. Education is essential for personal growth and development, and it also plays a significant role in society.
## Section 2: Levels of Education
There are several levels of education, including primary, secondary, tertiary, and post-secondary. Each level has a specific purpose and focus.
- Primary education is the first level of formal education. It usually lasts for six years and covers grades one to six. The main goal of primary education is to provide students with a solid foundation in reading, writing, and arithmetic.
- Secondary education is the next level of education. It usually lasts for five years and covers grades seven to twelve. The main goal of secondary education is to prepare students for higher education or the workforce.
- Tertiary education is the third level of education. It includes colleges and universities. The main goal of tertiary education is to provide students with advanced knowledge and skills in a specific field.
- Post-secondary education is the fourth level of education. It includes vocational schools and trade schools. The main goal of post-secondary education is to provide students with practical skills and knowledge for a specific job or career.
## Section 3: Purpose of Education
The purpose of education varies depending on the level and type of education. However, some common purposes of education include:
- To provide students with knowledge and skills that are relevant to their lives and careers.
- To help students develop critical thinking and problem-solving skills.
- To encourage students to be lifelong learners.
- To prepare students to be responsible citizens.
## Glossary
- Education: the process of acquiring knowledge and skills.
- Primary education: the first level of formal education, covering grades one to six.
- Secondary education: the next level of education, covering grades seven to twelve.
- Tertiary education: includes colleges and universities, providing advanced knowledge and skills in a specific field.
- Post-secondary education: includes vocational schools and trade schools, providing practical skills and knowledge for a specific job or career.
## Conclusion
Education is a vital process that enables pupils and students to acquire knowledge and skills that can earn them a living and a respectable life. Within most education systems are measures such as user charges and cost recovery. Education is essential for personal growth and development, and it also plays a significant role in society. There are several levels of education, each with a specific purpose and focus. The purpose of education includes providing students with knowledge and skills that are relevant to their lives and careers, helping students develop critical thinking and problem-solving skills, encouraging students to be lifelong learners, and preparing students to be responsible citizens.


text: Check the new video featuring Willow, Tyler Bledsoe, David Reyes, Julian Davidson and Aidan Campbell:. Truly a shoe to be worn anywhere, the Scout is the newest etnies shoe made with innovative, durable, abrasion-resistant and high-impact rebound cushioning STI Evolution Foam.. The etnies Scout is an addition to the Buy A Shoe Plant A Tree project, where for every pair of shoes sold a tree is planted with the Trees for The Future Foundation in Brazil. For more info, visit: etnies.com/buyashoeplantatree

textbook:
## Lesson: Introduction to Etnies Shoes
### Section 1: What are Etnies Shoes?
Etnies shoes are a type of skateboarding shoe that is designed and manufactured by the etnies company. They are known for their durability, comfort, and style, making them a popular choice among skateboarders and other action sports enthusiasts.
### Section 2: Features of Etnies Shoes
Etnies shoes are made with a variety of features that make them ideal for skateboarding and other action sports. These features include:
- Durable construction: Etnies shoes are built to withstand the rigors of skateboarding, making them a great choice for anyone who wants a shoe that will last.
- High-impact rebound cushioning: Etnies shoes are designed with a special type of foam that provides excellent impact protection while still allowing for a smooth, responsive ride.
- Innovative design: Etnies shoes are known for their unique and stylish designs, which set them apart from other skateboarding shoes on the market.
### Section 3: The Buy A Shoe Plant A Tree Project
In addition to their high-quality construction and features, Etnies shoes are also a part of the Buy A Shoe Plant A Tree project. For every pair of Etnies shoes sold, a tree is planted with the Trees for The Future Foundation in Brazil. This project is a great way to give back to the environment while also supporting a great cause.
### Section 4: Conclusion
Etnies shoes are a great choice for anyone who is looking for a durable, comfortable, and stylish shoe that can handle the rigors of skateboarding and other action sports. By purchasing a pair of Etnies shoes, you are not only getting a high-quality product, but you are also helping to support the Buy A Shoe Plant A Tree project and the Trees for The Future Foundation in Brazil. So, if you're looking for a new pair of shoes that will stand up to anything you throw at them, look no further than Etnies shoes!


text:
Q:

Archimedean property of the rational numbers

Can you prove the Archimedean property of the rational numbers without constructing the reals and using the least upper bound property? It seems odd to have to take this roundabout approach, but I don't know any proof that avoids it.

A:

Every positive rational number is of the form $m/n$ where $m$, $n$ are positive integers.  If you add up more than $n$ copies of this, the sum is more than 1, so there you have the Archimedean property.

A:

Let $x \in \mathbb{Q}$
If $x < 0$ there's nothing to do.
If $x \geqslant 0$ then we can write $x$ as $\dfrac{n}{m}$ (with no common factor other than 1), such that $n \in \mathbb{N}$ and $m \in N_{\ne 0}$
Since $m \geqslant 1$ then we have $n = mx \geqslant x$ which means $n + 1 > x$

A:

I came across this question in Mr. Apostol's Calculus.
My answer is a bit weird but it seems to work.
Assume the set of natural numbers is up bounded by a certain rational number a. It's certain that a >= 1 because 1 is the first member of natural numbers. Then a can be represented by two natural numbers p and q in the form of p/q.
(1) if q = 1, then a = p. Hence p + 1, which has to be natural number, is above the upper bound.
(2) if q >1, then a < p. hence p, a natural number from the assumption is above the upper bound.
On the other hand, it's easy to find a set of rational numbers bounded above and does not have a least upper bound.
Thus Archimedean property does not imply the completeness axiom, a.k.a, the least-upper-bound axiom
QED.

textbook:
Lesson: Archimedean Property of Rational Numbers

Introduction:
The Archimedean property states that every positive real number has a natural number equal to its ordinal number. In other words, the nth positive integer is always greater than or equal to the nth positive power of any positive real number. This property is named after the ancient Greek mathematician Archimedes, who first proved it for positive integers. In this lesson, we will learn about the Archimedean property of rational numbers and how it can be proven without using the least upper bound property.

Section 1: Definition and Importance of Archimedean Property

Definition: The Archimedean property of a set of real numbers is the statement that every positive element in the set is greater than or equal to some natural number.

Importance: The Archimedean property is essential in mathematics because it allows us to compare real numbers with natural numbers. It also helps us understand the properties of real numbers and their relationships with natural numbers.

Section 2: Proof of Archimedean Property Without Least Upper Bound Property

Proof: Let x be a positive real number. Then, there exists a positive integer n such that $n^2 < x$. Since $n^2$ is a perfect square, it is an integer. Therefore, $x$ is not an integer, and it must be a rational number. Let $x = \frac{a}{b}$, where $a$ and $b$ are coprime positive integers.

Now, let's consider the set of all positive integers. Since $n^2 < x$, it follows that $n(n+1) < ab$. Thus, the set of all positive integers is a subset of the set of all positive rational numbers. Since the set of all positive integers is unbounded, there must exist a positive rational number that is greater than any positive integer.

Conclusion: Therefore, the Archimedean property of rational numbers holds without using the least upper bound property.

Section 3: Examples and Practical Applications

Example 1: Consider the set of all positive real numbers between 1 and 2. We can see that 2 is greater than or equal to the set of all positive integers.

Example 2: Suppose you have a bag containing 5 apples and someone gives you 6 more apples. You can see that the total number of apples (11) is greater than the number of apples in the bag (5).

Practical Application: The Archimedean property is used in computer science algorithms, such as sorting and searching, to compare real numbers with natural numbers.

Glossary:
- Archimedean property: A property of a set of real numbers stating that every positive element in the set is greater than or equal to some natural number.
- Least upper bound property: A property of real numbers stating that the least upper bound of a set of real numbers is the smallest real number that is greater than all elements of the set.

Conclusion:
In this lesson, we learned about the Archimedean property of rational numbers and how it can be proven without using the least upper bound property. We also explored examples and practical applications of this property. By understanding the Archimedean property, we can better understand the relationships between real numbers and natural numbers.


text:
Mobile phone use and risk of parotid gland tumor.
Handheld mobile phones were introduced in Denmark and Sweden during the late 1980s. This makes the Danish and Swedish populations suitable for a study aimed at testing the hypothesis that long-term mobile phone use increases the risk of parotid gland tumors. In this population-based case-control study, the authors identified all cases aged 20-69 years diagnosed with parotid gland tumor during 2000-2002 in Denmark and certain parts of Sweden. Controls were randomly selected from the study population base. Detailed information about mobile phone use was collected from 60 cases of malignant parotid gland tumors (85% response rate), 112 benign pleomorphic adenomas (88% response rate), and 681 controls (70% response rate). For regular mobile phone use, regardless of duration, the risk estimates for malignant and benign tumors were 0.7 (95% confidence interval: 0.4, 1.3) and 0.9 (95% confidence interval: 0.5, 1.5), respectively. Similar results were found for more than 10 years' duration of mobile phone use. The risk estimate did not increase, regardless of type of phone and amount of use. The authors conclude that the data do not support the hypothesis that mobile phone use is related to an increased risk of parotid gland tumors.

textbook:
Lesson: Mobile Phone Use and Health Risks

Introduction:
Mobile phones are a common technology used by people around the world. They have become an essential part of our lives, providing communication, entertainment, and access to information. However, there is growing concern about the potential health risks associated with mobile phone use. In this lesson, we will explore the research on mobile phone use and health risks, specifically focusing on the risk of parotid gland tumors.

Core Value:
The core value of this lesson is to understand the potential health risks associated with mobile phone use and to make informed decisions about our usage.

Section 1: Understanding Parotid Gland Tumors
Parotid glands are salivary glands located in front of the ears. They produce saliva, which helps us digest food and keep our mouths moist. Tumors can form in these glands, and some of them can be cancerous.

Section 2: Mobile Phone Use and Health Risks
There has been a lot of research on the potential health risks associated with mobile phone use. Some studies have suggested that long-term use of mobile phones may increase the risk of developing parotid gland tumors.

Section 3: Analyzing Research Findings
Researchers have conducted several studies to investigate the relationship between mobile phone use and parotid gland tumors. One such study was conducted in Denmark and certain parts of Sweden. The study looked at people aged 20-69 years who were diagnosed with parotid gland tumors during 2000-2002. The researchers compared these cases to a control group selected from the general population.

The study found that regular mobile phone use, regardless of duration, was not associated with an increased risk of malignant parotid gland tumors. However, there was a slightly increased risk of benign tumors. The risk estimate for more than 10 years' duration of mobile phone use was also not significantly different from that of non-users.

Conclusion:
In conclusion, the research does not currently support the idea that long-term mobile phone use increases the risk of developing parotid gland tumors. However, more research is needed to fully understand the potential health risks associated with mobile phone use.

Glossary:
- Parotid gland: A salivary gland located in front of the ears that produces saliva.
- Tumor: An abnormal growth of cells that may or may not be cancerous.
- Mobile phone: A portable telephone device that can make and receive calls and send and receive messages.

Self-Debate Discussion:
Should we be concerned about the potential health risks associated with mobile phone use? Why or why not?


text:
Ask HN: System Design] How to design a grid view with millions of records? - Igor_Wiwi
The requirements are following:
1. Data could be aggregated differently.
2. Filtering of aggregated data.
3. Underlying data is huge. Around 10 tables with millions of records.
Currently we load everything into memory and based on the filter and aggregation level prepare data on back-end side and show it on UI. It works but it has multiple downsides:
- Initial load takes multiple minutes, because we need to query db and load all required data into memory, but consequent queries load much faster because we have this data already in memory.
- Filtering logic is awkward and resembles "if column1.isSelected then filter" logic.
- To be able to show actual data we need to update in-memory representation if we have smth new in DB. To do it we are polling DB and reload the data if it's stale.
To me this implementation looks too overcomplicated and not scalable (e.g. the app is limited how much data it can store).
What is the best approach of implementing such thing?
======
daleholborow
Could look into an elastic search / Lucene solution

textbook:
Lesson: Designing a Grid View with Millions of Records
Introduction:
In this lesson, we will learn about designing a grid view that can handle millions of records. We will cover the following topics:
1. Data Aggregation
2. Filtering
3. Memory Management
Core Value:
The core value of this lesson is to understand how to design a grid view that can efficiently handle large amounts of data while providing filtering and aggregation capabilities.
Section 1: Data Aggregation
Topic 1: Efficient Data Aggregation
Objective: Understand how to aggregate data efficiently.
Question: How can we aggregate data efficiently?
Answer: We can aggregate data efficiently by using indexing and caching techniques. Indexing allows us to quickly search for specific records, while caching allows us to store frequently accessed data in memory for faster access.
Topic 2: Different Types of Aggregation
Objective: Understand the different types of aggregation.
Question: What are the different types of aggregation?
Answer: The different types of aggregation include sum, average, count, and distinct.
Section 2: Filtering
Topic 1: Filtering Logic
Objective: Understand how to implement filtering logic.
Question: How can we implement filtering logic?
Answer: We can implement filtering logic by using SQL queries and filters.
Topic 2: Filtering Performance
Objective: Understand how to optimize filtering performance.
Question: How can we optimize filtering performance?
Answer: We can optimize filtering performance by using indexing and caching techniques.
Section 3: Memory Management
Topic 1: Memory Management Techniques
Objective: Understand how to manage memory efficiently.
Question: How can we manage memory efficiently?
Answer: We can manage memory efficiently by using techniques such as pagination and lazy loading.
Topic 2: In-Memory Data Updates
Objective: Understand how to update in-memory data efficiently.
Question: How can we update in-memory data efficiently?
Answer: We can update in-memory data efficiently by using change data capture (CDC) techniques.
Conclusion:
In conclusion, designing a grid view with millions of records requires efficient data aggregation, filtering, and memory management techniques. By using indexing, caching, pagination, lazy loading, and CDC, we can create a grid view that can handle large amounts of data while providing filtering and aggregation capabilities.
Glossary:
- Indexing: A technique used to quickly search for specific records.
- Caching: A technique used to store frequently accessed data in memory for faster access.
- Pagination: A technique used to limit the number of records displayed on a page.
- Lazy Loading: A technique used to load data as it is needed.
- Change Data Capture (CDC): A technique used to update in-memory data efficiently.


text: Price reduced and ready for new owners! Great home at the edge of town, but has that country feel. This home and almost 6 acres with barn sits right at the edge of Urbana city limits. Home has some updates, and is ready for the new owner to add their decorative tastes. 3rd bedroom is large and sits over the 2 car garage. Barn is in good shape with 3 newer built stalls. Also has storage/shop building, or could be partially used for a chicken coop. Easy access to Highway 65 and only minutes from Pomme de Terre Lake!

textbook:
**Lesson: Real Estate Investment**

**Introduction:** Real estate investment involves buying and holding property for the purpose of generating income or capital gains. It can be a lucrative way to build wealth over time. In this lesson, we will explore the basics of real estate investment, including how to evaluate properties, calculate returns, and identify potential risks.

**Section 1: Evaluating Properties**

**Theoretical Concepts:** When evaluating a property, investors look at several factors to determine its potential value. These factors include location, condition, market demand, and potential for appreciation.

**Practical Examples:** Let's say you are considering purchasing a property listed at $100,000. The property is located in a desirable neighborhood with good schools and shopping centers nearby. However, the house needs significant repairs and is not in move-in condition. You estimate that the repairs will cost an additional $20,000. The property is also located on a busy street, which may decrease its appeal to some buyers.

To evaluate this property, you would need to consider the following factors:

1. Location: Is the property located in a desirable neighborhood? Are there nearby amenities such as schools, shopping centers, and parks?
2. Condition: How much money will you need to spend on repairs and upgrades? Will the repairs increase the property's value?
3. Market Demand: Is there a high demand for homes in the area? Are there many similar properties available for sale?
4. Potential for Appreciation: Do you think the property's value will increase over time? Are there any factors that could negatively impact its value, such as a declining neighborhood or environmental hazards?

**Questions and Answers:**

Q: How do you determine a property's potential value?
A: Investors evaluate properties based on several factors, including location, condition, market demand, and potential for appreciation.

Q: What is the importance of location when evaluating a property?
A: Location is one of the most important factors to consider when evaluating a property. A desirable location can increase the property's value and make it more appealing to potential buyers.

Q: How do you evaluate a property's condition?
A: Investors should carefully inspect a property to determine the cost of necessary repairs and upgrades. They should also consider whether the repairs will increase the property's value.

**Section 2: Calculating Returns**

**Theoretical Concepts:** There are several ways to calculate the potential return on a real estate investment. These include cash-on-cash return, cap rate, and internal rate of return (IRR).

**Practical Examples:** Let's say you purchase a property for $100,000 and it generates $10,000 in rental income each year. To calculate your cash-on-cash return, you would divide the annual rental income by the initial investment:

Cash-on-cash return = Annual Rental Income / Initial Investment
Cash-on-cash return = $10,000 / $100,000
Cash-on-cash return = 0.1 or 10%

To calculate the property's cap rate, you would divide the annual net operating income by the property's current market value:

Cap Rate = Annual Net Operating Income / Current Market Value
Cap Rate = ($10,000 - $8,000) / $100,000
Cap Rate = $2,000 / $100,000
Cap Rate = 0.02 or 2%

To calculate the property's IRR, you would use a financial calculator or software program that takes into account the initial investment, cash flows, and the eventual sale of the property.

**Questions and Answers:**

Q: What is the difference between cash-on-cash return and cap rate?
A: Cash-on-cash return measures the annual return on your initial investment, while cap rate measures the potential return on the property's current market value.

Q: How do you calculate the internal rate of return (IRR)?
A: To calculate the IRR, you would use a financial calculator or software program that takes into account the initial investment, cash flows, and the eventual sale of the property.

**Section 3: Identifying Risks**

**Theoretical Concepts:** Real estate investment comes with several risks, including market fluctuations, vacancies, and maintenance costs.

**Practical Examples:** Let's say you purchase a property and it remains vacant for several months. This can negatively impact your cash flow and make it difficult to meet your mortgage payments. Additionally, if the market takes a downturn, you may find it difficult to sell the property for a profit or even break even.

To mitigate these risks, investors should carefully evaluate properties before making an investment. They should also consider diversifying their portfolio by investing in multiple properties or different types of real estate.

**Questions and Answers:**

Q: What are some risks associated with real estate investment?
A: Some risks include market fluctuations, vacancies, and maintenance costs.

Q: How can investors mitigate these risks?
A: Investors can mitigate these risks by carefully evaluating properties before making an investment and diversifying their portfolio.

**Conclusion:** Real estate investment can be a lucrative way to build wealth over time. By evaluating properties, calculating returns, and identifying potential risks, investors can make informed decisions and maximize their returns. Remember to always do your research and consult with a financial advisor before making any investment decisions.

**Glossary:**
- Cash-on-cash return: The percentage return on your initial investment, calculated by dividing the annual rental income by the initial investment.
- Cap rate: The potential return on the property's current market value, calculated by dividing the annual net operating income by the property's current market value.
- Internal rate of return (IRR): A measure of the potential return on an investment, calculated using a financial calculator or software program.


text: 80S.FM. 80S.FM. 80S.Fm”.s.. The group formed in Deptford, London, in 1974,and first broke up in 1982. Squeeze then reformed in 1985, and disbanded again in 1999.. The band reunited for tours through the United States and United Kingdom in 2007.In 2010, they issued Spot the Difference, an album of newly recorded versions of older material. The band’s first album of all-new material since 1998, Cradle to the Grave, was released in October 2015,followed by another album, The Knowledge, in October 2017.

textbook:
Lesson: The Importance of Perseverance in Achieving Goals

Introduction:
In this lesson, we will explore the importance of perseverance in achieving our goals. We will learn about the story of the band Squeeze and how they faced challenges and setbacks before finally achieving success.

Section 1: The Story of Squeeze
Squeeze is a British rock band that formed in 1974. The band had to face many challenges and setbacks before they could achieve success. They first broke up in 1982, but then reformed in 1985. However, they disbanded again in 1999. Despite these setbacks, the band reunited in 2007 and went on to release several albums, including Spot the Difference in 2010 and Cradle to the Grave in 2015.

Section 2: The Importance of Perseverance
Perseverance is the ability to keep going even when things get tough. It is an essential quality to have if we want to achieve our goals. Just like Squeeze faced many challenges before achieving success, we too will face obstacles on our path to achieving our goals. However, if we give up easily, we will never reach our full potential.

Questions:
- Why is perseverance important in achieving our goals?
- What are some examples of obstacles that Squeeze faced before achieving success?
- How can we develop perseverance in ourselves?

Section 3: Developing Perseverance
Developing perseverance takes time and effort. Here are some strategies to help us develop this quality:

- Set realistic goals and break them down into smaller, manageable tasks.
- Practice self-discipline and avoid procrastination.
- Learn from failures and use them as opportunities to grow and improve.
- Surround ourselves with positive influences who encourage us to keep going.
- Take breaks and recharge when needed to avoid burnout.

Questions:
- What are some strategies we can use to develop perseverance?
- How can we avoid giving up when faced with obstacles?
- What role do positive influences play in developing perseverance?

Section 4: Applying Perseverance to Our Lives
Perseverance is not just important for achieving our goals; it is also essential for living a fulfilling life. By learning to stick with our goals and dreams, we become more resilient and better equipped to handle life's challenges.

Questions:
- How does perseverance contribute to a fulfilling life?
- Can you think of any personal experiences where perseverance helped you overcome a challenge?
- How can we apply the story of Squeeze to our own lives?

Conclusion:
In conclusion, the story of Squeeze teaches us the importance of perseverance in achieving our goals. By facing challenges head-on and never giving up, we can overcome obstacles and achieve success. By developing perseverance in ourselves, we become stronger and more resilient individuals, ready to tackle whatever life throws our way.

Glossary:
- Perseverance: The ability to keep going even when things get tough.
- Obstacles: Something that makes progress or movement difficult.
- Self-discipline: The ability to control one's behavior and impulses.
- Procrastination: The act of delaying or postponing something.
- Resilience: The ability to recover quickly from difficult situations.

The end.


text: Erin Andrews Tweets About CWS Assignment Going to Jenn Brown. Yesterday we reported that ESPN sideline reporter Jenn Brown had gone on Twitter and announced her glee about getting the assignment to cover the College World Series, a gig that had long been the province of ESPN personality Erin Andrews.. “Guess who’s working the sidelines for the College World Series in Omaha?!? I am super psyched and can’t wait!!” Brown wrote.. If people suspected Andrews was getting snubbed by the Bristol brass in lieu of a fresher face, well, Andrews paints a different picture, saying on Twitter “Thx for all the tweets about CWS & the Bee…yes, everything is OK..It was time for me to pull back and have down time before (college football) and (college basketball).”. In reply to a question from a follower, she said of the College World Series, “sorry..been doing it for 8 yrs..time for a change..”. As Darren Rovell of CNBC reported yesterday, Rob Stone is replacing Andrews for next week’s Scripps National Spelling Bee.

textbook:
Lesson:
Introduction to Journalism
In this lesson, we will learn about journalism and its importance in society. We will explore the different types of journalism, the role of journalists, and the skills required to be a successful journalist. By the end of this lesson, you will be able to understand the basics of journalism and how it impacts our daily lives.
Section 1: What is Journalism?
Journalism is the practice of collecting, writing, editing, and distributing news and information. It is an important part of society because it helps us stay informed about what is happening in the world around us. There are several different types of journalism, including print, broadcast, and online journalism.
Section 2: Types of Journalism
Print journalism refers to the publication of news and information in newspapers, magazines, and other printed materials. Broadcast journalism involves the delivery of news and information through radio, television, and other forms of electronic media. Online journalism involves the publication of news and information on the internet.
Section 3: The Role of Journalists
Journalists play an important role in society by gathering and reporting news and information. They act as watchdogs, holding those in power accountable for their actions. They also serve as a voice for the voiceless, bringing attention to issues that may not otherwise receive attention.
Section 4: Skills Required for Journalism
To be a successful journalist, you need to have several important skills. These include writing skills, research skills, interviewing skills, and editing skills. You also need to be able to think critically and ask tough questions.
Section 5: Impact of Journalism
Journalism has a significant impact on society. It helps us stay informed about what is happening in the world around us, and it holds those in power accountable for their actions. Journalism also plays an important role in shaping public opinion and can influence political and social change.
Conclusion
In conclusion, journalism is an important part of society that helps us stay informed about what is happening in the world around us. By learning about the different types of journalism, the role of journalists, and the skills required for success in this field, you can gain a better understanding of how journalism impacts our lives.


text: - You will learn the 7 step process to follow for self-healing. - You will learn the 12 discovery steps. - You will learn a variety of ways to identify and correct specific issues. - How to work with overwhelming fears. - Ways to help process many forms of emotions. - Learn empathy skills when resolving a conflict. I often hear things like, ‘For the first time I didn’t doubt myself,’ or ‘For the first time, I stood up to my husband.’ They often feel a profound sense of wholeness and well being they have never felt before.. Dates: November 5 & 6 (Sat & Sun). Time: 10:00am – 6:00pm both days... Continuing Education Credits for Self Created Health. CE Hours Available for Massage Therapists & Hypnotherapists

textbook:
Lesson: Introduction to Self-Healing
## Section 1: What is Self-Healing?
Self-healing is the process of healing oneself without the need for external intervention. It involves understanding and connecting with your body, mind, and spirit to promote healing and wellness.
## Section 2: The 7 Step Process for Self-Healing
1. Acknowledge and accept your feelings: The first step in self-healing is acknowledging and accepting your feelings. This means allowing yourself to feel emotions without judgment or resistance.
2. Identify the root cause: Once you have acknowledged your feelings, the next step is to identify the root cause of your pain or discomfort. This could be a physical injury, emotional trauma, or a negative thought pattern.
3. Set an intention: After identifying the root cause, set an intention for healing. This could be something as simple as "I intend to release this pain and move forward with love."
4. Connect with your higher power: Connect with your higher power, whatever that may be for you. This could be God, the universe, or your inner guide.
5. Visualize healing: Visualize the healing process taking place in your body, mind, and spirit. See yourself surrounded by light and love, and feel the warmth and peace washing over you.
6. Release and let go: Release any negative thoughts or emotions that are holding you back. Let go of any fears, doubts, or worries that are preventing you from healing.
7. Express gratitude: Finally, express gratitude for the healing process and for the support of your higher power. Thank your body, mind, and spirit for all they do for you.
## Section 3: The 12 Discovery Steps
The 12 discovery steps are a powerful tool for self-healing. They involve exploring different aspects of yourself and your life to gain insight and understanding.
1. Explore your beliefs and values
2. Identify your strengths and weaknesses
3. Understand your emotions and how they affect you
4. Discover your life's purpose
5. Reflect on your past experiences and how they shape you
6. Examine your relationships and how they impact your life
7. Assess your health and well-being
8. Evaluate your current situation and what you want to change
9. Set goals and intentions for your future
10. Take action towards achieving your goals
11. Reflect on your progress and adjust as needed
12. Celebrate your successes and express gratitude for the journey.
## Section 4: Ways to Identify and Correct Specific Issues
There are many ways to identify and correct specific issues related to self-healing. Some methods include:
1. Meditation and mindfulness practices
2. Journaling and reflection
3. Energy healing techniques such as Reiki or acupuncture
4. Counseling or therapy sessions
5. Physical exercise and movement practices
6. Nutrition and diet changes
7. Herbal remedies and supplements
8. Aromatherapy and essential oils
9. Creative expression through art, music, or writing
10. Gratitude and positive affirmations.
## Conclusion
Self-healing is a powerful tool for promoting wellness and healing in our lives. By following the 7 step process and exploring the 12 discovery steps, we can gain insight and understanding into ourselves and our world. By identifying and correcting specific issues, we can create a path towards wholeness and well-being.


text:
Background
==========

The proportion of late preterm births has markedly increased during the past two decades, accounting for 70% of preterm births \[[@B1]\]. There is evidence that monitoring not only the quantity but also the quality of growth, in terms of body composition changes, may play an important role in gaining further insight into the relationship between birth weight and time in utero on early growth pattern and future health \[[@B2]\]. To our knowledge, data regarding the early dynamic features of growth and body composition changes of late preterm infants are scarce \[[@B3]-[@B5]\]. The aim of this study was to compare growth and body composition of late preterm infants to that of very preterm and full term infants.

Materials and methods
=====================

Observational longitudinal study. Forty-nine late preterm infants and 63 adequate for gestational age very preterm infants were included in the study. Forty healthy, full-term, breast-fed infants were enrolled as a reference group. Anthropometric parameters and body composition by an air displacement plethysmography system were assessed at term, at 1 and 3 months of corrected age in all groups.

Results
=======

Basal characteristics of the study population are shown in table [1](#T1){ref-type="table"}.

######

Basal characteristics and anthropometric and body composition parameters at term and at 3 months of corrected age of the study population

                                      Full term infants   Late preterm infants   Very preterm infants
  ----------------------------------- ------------------- ---------------------- ----------------------
  **Gestational age (wks)**           38.8 ± 1.4          35.3 ± 0.75            29.1 ± 2.1
  **Birth Weight (g)**                3074 ± 409          2496 ± 330             1202 ± 238
  **Birth length (cm)**               49.3 ± 2            44.8 ± 1.7             37.2 ± 3.5
  **Birth head circumference (cm)**   34.2 ± 1.17         31.6 ± 1.2             29.07 ± 2.1
  **Weight 40 wks (g)**               3074 ± 409          3396\*° ± 390          3015 ± 403
  **Fat free mass 40 wks (g)**        2794 ± 358          2837° ± 255            2459 ± 320
  **Fat mass 40 wks (g)**             280 ± 106           559\# ± 196            565 ± 168
  **Weight 3 mo (g)**                 5978 ± 722          6197° ± 589            5557 ± 669
  **Fat free mass 3 mo (g)**          4345 ± 484          4500\^ ± 390           4157 ± 461
  **Fat mass 3 mo (g)**               1632 ± 355          1672\^ ± 348           1405 ± 362

\*late preterm vs full term p=0.001

° late preterm vs very preterm p\< 0.001

\# late preterm vs full term p\<0.001

\^ late preterm vs very preterm p= 0.005

Late preterm infants showed higher weight at term than full term and very preterm infants (table [1](#T1){ref-type="table"}). Length (49.5 vs 47.5 cm; p\< 0.0001) and head circumference ( 35.2 vs 34.4 cm; p= 0.004) values were also bigger in late preterm infants at term than in very preterm infants. At 3 months of corrected age no significant difference in anthropometric parameters was found between late preterm and full term infants, whereas weight of late preterm infants was higher than that of very preterm infants.

With regard to body composition, fat mass at term of late preterm infants was similar to that of very preterm but significantly higher than that of full term. Fat free mass at term was not different between late preterm and full term infants while very preterm infants showed the lowest value.

At 3 months of corrected age, late preterm infants reached a similar body composition to full term infants, whereas very preterm infants still had the lowest values of weight, fat free mass and fat mass (table [1](#T1){ref-type="table"}).

Conclusions
===========

The present findings demonstrate that late preterm infants have an altered body composition at term corrected age in terms of high adiposity. Potential metabolic implications of these results need to be investigated.

textbook:
Lesson: Understanding Growth and Body Composition Changes in Late Preterm Infants
===============

Objective: To understand the growth and body composition changes in late preterm infants compared to very preterm and full-term infants.

Introduction: Late preterm births have been increasing over the years, and understanding their growth and body composition changes is crucial for their future health. This lesson will focus on the growth and body composition changes in late preterm infants compared to very preterm and full-term infants.

Section 1: Growth and Body Composition Changes in Late Preterm Infants
============================================================

1.1. What is a late preterm birth?
-----------------------------------
A late preterm birth is a baby born between 34 weeks and 36 weeks and 6 days of gestation.

1.2. What is the difference between late preterm, very preterm, and full-term infants?
--------------------------------------------------------------
Late preterm infants are born earlier than full-term infants but later than very preterm infants. Very preterm infants are born before 32 weeks and 6 days of gestation, while full-term infants are born at 37 weeks or more.

1.3. How does the growth and body composition of late preterm infants compare to that of very preterm and full-term infants?
-------------------------------------------------------------------
Late preterm infants grow and develop differently than very preterm and full-term infants. They may experience catch-up growth, which means they grow faster than expected to regain the weight and length lost during their early days. However, they may also face challenges with feeding, temperature regulation, and immune system development compared to full-term infants.

Section 2: Methods Used to Study Growth and Body Composition Changes in Late Preterm Infants
==============================================================================================

2.1. What methods were used to study growth and body composition changes in late preterm infants?
-------------------------------------------------------------------------------------------
Researchers used an observational longitudinal study to compare the growth and body composition of late preterm infants to that of very preterm and full-term infants. They measured anthropometric parameters and body composition using an air displacement plethysmography system at term, 1 month, and 3 months of corrected age in all groups.

Section 3: Results
================

3.1. What were the results of the study?
---------------------------------------------
The study found that late preterm infants had similar growth patterns compared to very preterm infants but had different growth rates compared to full-term infants. Late preterm infants also had different body composition changes compared to very preterm and full-term infants.

Conclusion:
============

Understanding the growth and body composition changes in late preterm infants is essential for their future health and well-being. By comparing them to very preterm and full-term infants, we can gain insight into the unique challenges faced by late preterm infants and develop appropriate interventions to support their growth and development.

Glossary:
==========

- Gestational age: The age of a fetus or baby, calculated from the first day of the mother's last menstrual period (LMP).
- Anthropometric parameters: Measurements of the body such as weight, length, and head circumference.
- Air displacement plethysmography system: A device that measures body composition by calculating the volume of air displaced by the body.
- Corrected age: The age of an infant or child, calculated based on their actual gestational age rather than their chronological age.

Self-Debate:
=============

- Do you think that late preterm infants face unique challenges compared to full-term infants? Why or why not?
- How might understanding the growth and body composition changes in late preterm infants impact their health and well-being?
- In what ways can we support the growth and development of late preterm infants?


text: A Heritage representative will review your information and contact you between the hours of 8 a.m. and 5 p.m. CST, Monday through Friday.. We look forward to working with you on your next steel building project.. Stay warm this winter and save up to 5% off on your next steel building!. Heritage has been designing steel buildings for 41 years. And the fact is, experience matters. Whether you're in the market for something large and complex or something small and simple, we can meet your needs.. Call to speak to one of our project consultants today: 1-888-914-6067

textbook:
Title: Introduction to Steel Buildings

### Section 1: Theoretical Concepts

In this section, we will explore the basic concepts behind steel buildings. Steel buildings are structures made of steel materials that are designed to withstand various weather conditions and other external factors. They are commonly used for commercial, industrial, and residential purposes.

**Question:** What are the advantages of using steel in building construction?

**Answer:** Steel is a versatile and durable material that offers several advantages in building construction. It is strong and can support heavy loads, making it ideal for multi-story buildings. Steel is also fire-resistant, which helps prevent the spread of fires in buildings. Additionally, steel structures can be easily customized to meet specific design requirements.

**Question:** How are steel buildings designed and constructed?

**Answer:** Steel buildings are designed by architects and engineers who work together to create a structurally sound and aesthetically pleasing structure. Once the design is complete, the steel components are manufactured in a factory and then transported to the construction site. The building is then assembled on-site using cranes or other heavy equipment.

**Question:** Why are steel buildings popular in the United States?

**Answer:** Steel buildings have become popular in the United States due to their strength, durability, and versatility. They can be used for various purposes, including warehouses, factories, schools, and homes. Additionally, steel buildings can be easily customized to meet specific design requirements, making them an attractive option for many builders.

### Section 2: Practical Examples

In this section, we will explore some practical examples of steel buildings. These examples will demonstrate the versatility and strength of steel structures.

**Example 1:** A large warehouse is needed to store goods for a manufacturing company. The company decides to build a steel building for this purpose. The building is designed to withstand heavy loads and to be fire-resistant. It is also customized to include features such as loading docks and overhead cranes.

**Example 2:** A school district needs to build a new elementary school. The district decides to construct a steel building because of its durability and ability to withstand harsh weather conditions. The building is designed to include classrooms, a gymnasium, and other necessary facilities.

**Example 3:** A family wants to build a new home in a rural area. They choose to construct a steel building because of its strength and ability to withstand heavy snowfall and strong winds. The building is designed to include all the amenities of a modern home, including a kitchen, living room, and bedrooms.

### Section 3: Real-World Scenarios

In this section, we will explore some real-world scenarios where steel buildings are used. These scenarios will demonstrate the versatility and strength of steel structures in various applications.

**Scenario 1:** A large retail store needs to expand its warehouse capacity to accommodate increased demand during the holiday season. The store decides to construct a steel building to store additional inventory. The building is designed to withstand heavy loads and to be fire-resistant.

**Scenario 2:** A manufacturing company needs to construct a new factory to produce a new line of products. The company decides to use a steel building because of its strength and ability to withstand harsh weather conditions. The building is designed to include all the necessary machinery and equipment for production.

**Scenario 3:** A community center needs to construct a new facility to serve as a gathering place for local residents. The center decides to use a steel building because of its versatility and ability to be customized to meet specific design requirements. The building is designed to include a gymnasium, meeting rooms, and other necessary facilities.

### Glossary

- Steel: A strong and durable material that is commonly used in building construction.
- Building: A structure that is designed to provide shelter or protection.
- Customization: The process of tailoring a product or service to meet specific design requirements.
- Versatility: The ability of a material or product to be used for multiple purposes.
- Strength: The ability of a material or product to withstand heavy loads or other external factors.
- Durability: The ability of a material or product to last for a long period of time.
- Fire-resistant: The ability of a material or product to resist the spread of fires.
- Loading docks: Structures used for loading and unloading goods from vehicles.
- Overhead cranes: Machines used for lifting heavy objects in factories and warehouses.
- Harsh weather conditions: Extreme weather conditions such as heavy rain, snow, or wind.
- Design requirements: Specifications that must be met when creating a product or service.
- Machinery: Equipment used for performing tasks in a factory or warehouse.
- Equipment: Tools and machines used for performing tasks.
- Gymnasium: A room or building used for physical exercise and sports activities.

### Conclusion

Steel buildings are versatile and strong structures that can be used for various purposes. They offer several advantages over other building materials, including strength, durability, and fire resistance. In this lesson, we explored the theoretical concepts, practical examples, and real-world scenarios of steel buildings. We also defined key terms and provided a glossary to help students understand the terminology used in this field. By the end of this lesson, students will have a solid understanding of steel buildings and their applications in various industries.


text:
Q:

Docker file postgres initial schemas not executed

I updated my docker file to version 3 but now the inicial schemas are not being created. i already tried with a different volume
I run it with : docker-compose -f docker-compose.yml up
version: '3'
services:
  db-service:
    image: postgres:11.2
    volumes:
      - ./dbscripts/:/docker-entrypoint-initdb.d/
    restart: always
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=sample
    ports:
      - 5432:5432

A:

Check these 2 things:

The init scripts are triggered only on the first deploy. On the subsequent docker-compose ups you probably see as well on the logs the following message:
db_1  | PostgreSQL Database directory appears to contain a database; Skipping initialization

To force the re-initialization, you can wipe the data volume(This will delete the entries, not only the schema).
To find the path, simply docker inspect <postgres-container-id> and look for the HostConfig.Binds

The script executes till the first type "longvarbinary" does not exist error. You will need to fix this.
db-service_1  | CREATE TABLE
db-service_1  | 2020-07-26 19:29:34.121 UTC [68] ERROR:  type "longvarbinary" does not exist at character 68

I opened a console in the postgres container and your sample database is there, as well as a table that is created before the .sql error occurs in the script:
docker exec -ti 22b0bb87561f sh
# psql -U postgres
psql (11.2 (Debian 11.2-1.pgdg90+1))
Type "help" for help.

postgres=# \l
                                 List of databases
   Name    |  Owner   | Encoding |  Collate   |   Ctype    |   Access privileges
-----------+----------+----------+------------+------------+-----------------------
 postgres  | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 sample    | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 template0 | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres          +
           |          |          |            |            | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres          +
           |          |          |            |            | postgres=CTc/postgres
(4 rows)

postgres=# \c sample
You are now connected to database "sample" as user "postgres".
sample=# \dt
                List of relations
 Schema |         Name         | Type  |  Owner
--------+----------------------+-------+----------
 public | oauth_client_details | table | postgres
(1 row)

textbook:
Lesson: How to create and manage databases using Docker

Introduction:
In this lesson, we will learn how to create and manage databases using Docker. We will use PostgreSQL as our database management system. We will cover the following topics:

1. Introduction to Docker
2. Creating a PostgreSQL database using Docker
3. Managing the database using Docker

Section 1: Introduction to Docker
Docker is a platform that allows developers to build, ship, and run applications in containers. Containers are lightweight, portable, and self-sufficient, making them ideal for software development. Docker makes it easy to package and ship applications and their dependencies, so they can run reliably in any environment.

Section 2: Creating a PostgreSQL database using Docker
To create a PostgreSQL database using Docker, we need to follow these steps:

1. Install Docker on our machine
2. Create a Dockerfile for our PostgreSQL database
3. Build the Docker image for our PostgreSQL database
4. Run the Docker container for our PostgreSQL database

Step 1: Install Docker on our machine
Docker is available for most Linux distributions and macOS. To install Docker, follow the instructions for your operating system.

Step 2: Create a Dockerfile for our PostgreSQL database
A Dockerfile is a text file that contains instructions for building a Docker image. Here's an example Dockerfile for a PostgreSQL database:

```
FROM postgres:11.2

# Set environment variables
ENV POSTGRES_USER=postgres
ENV POSTGRES_PASSWORD=postgres
ENV POSTGRES_DB=sample

# Copy the database schema
COPY db-schema.sql /docker-entrypoint-initdb.d/

# Run the schema creation script
ENTRYPOINT ["/usr/bin/postgres"]
CMD ["-D", "-c", "postgres"]
```

Step 3: Build the Docker image for our PostgreSQL database
To build the Docker image for our PostgreSQL database, we need to run the following command:

```
docker build -t postgres-database .
```

Step 4: Run the Docker container for our PostgreSQL database
To run the Docker container for our PostgreSQL database, we need to run the following command:

```
docker run -p 5432:5432 -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres -e POSTGRES_DB=sample postgres-database
```

Section 3: Managing the database using Docker
Once our PostgreSQL database is up and running, we can manage it using Docker. Here are some common tasks:

1. Create a new table
2. Insert data into the table
3. Query the data
4. Update the data
5. Delete the data

Conclusion:
In this lesson, we learned how to create and manage databases using Docker. We covered the basics of Docker and then created a PostgreSQL database using Docker. Finally, we managed the database using Docker commands. With this knowledge, we can create and manage databases quickly and efficiently.