Vinton Cerf co-founded the Internet Society (ISOC) and served as its chairman. He also helped develop TCP/IP protocols and played a key role in the development of the internet as a whole.
Vinton Cerf is indeed recognized as one of the main fathers of the internet. He has made significant contributions to its development and has been involved with various internet organizations. Here are the organizations he has chaired or helped found:
Internet Society (ISOC): Cerf co-founded ISOC in 1992 and served as its chairman from 1992 to 1995. ISOC is a nonprofit organization that promotes the open development, evolution, and use of the internet.Internet Corporation for Assigned Names and Numbers (ICANN): Cerf played a crucial role in the establishment of ICANN in 1998, a nonprofit organization responsible for coordinating various internet-related tasks, such as managing domain names and IP addresses.Regarding internet technologies, Cerf is particularly known for his contributions to the development of TCP/IP protocols, which form the foundation of the modern internet. Together with Robert Kahn, Cerf co-designed and developed the Transmission Control Protocol (TCP) and the Internet Protocol (IP), creating a standardized system for data transmission and communication across interconnected networks.
Cerf's work in developing TCP/IP protocols and his involvement( and leading internet organizations have played a pivotal role in shaping the internet as we know it today.
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Lesson #2 - Mechanical Systems
Bevel Gear, Worm & Wheel, and Leadscrew
Bevel Gear - Use your model to answer the following questions.
What is the angle of the input shaft compared to the output shaft?
Is the speed increased, decreased, or constant?
Is the torque increased, decreased, or constant?
If the input gear was smaller than the output gear, how would that affect the speed and torque?
What is the gear ratio?
Is the flow of power reversible? (Can you make the input shaft turn by turning the output shaft?)
List an example where this mechanism might be used. A helpful search term is bevel gear.
Worm & Wheel - Use your model to answer the following questions.
What is the angle of the input shaft compared to the output shaft?
Is the speed increased, decreased, or constant?
Is the torque increased, decreased, or constant?
Label the worm and wheel gears.
What is the gear ratio?
Is the flow of power reversible? (Can you make the input shaft turn by turning the output shaft?)
Is the direction of travel reversible? (Does the mechanism still work if the input shaft is turned in the opposite direction?)
List an example where this mechanism might be used. A helpful search term is worm gear.
Leadscrew- Use your model to answer the following questions.
What is the type of input movement? (rotary, reciprocating, or linear)
What is the type of output movement? (rotary, reciprocating, or linear)
How many revolutions of the crank are needed to move the screw block 1 inch?
Is the flow of power reversible? (Can you make the lead screw turn by pushing the screw block?)
Which is increased in the output? Force or speed?
Is the direction of travel reversible? (Does the mechanism still work if the crank is turned in the opposite direction?)
List an example where this mechanism might be used. A helpful search term is lead screw.
Bevel Gear:
The angle of the input shaft compared to the output shaft varies.The speed and torque can vary depending on the gear ratios.If the input gear is smaller, it increases speed and decreases torque.The gear ratio is determined by the gear sizes and teeth.The flow of power is reversible.Bevel gears are used in automotive differentials and power tools.Worm & Wheel:
The angle between the input and output shafts is typically 90 degrees.The speed is decreased, and the torque is increased.The worm is the input gear, and the wheel is the output gear.The gear ratio is determined by the number of teeth on the gears.The flow of power is not reversible.The direction of travel remains the same.Worm gears are used in lifts, conveyors, and steering systems.Leadscrew:
The input movement can be rotary or linear.The output movement is linear.The number of crank revolutions depends on the leadscrew's pitch.The flow of power is reversible.Force is increased in the output.The direction of travel is reversible.Leadscrews are used in CNC machines and 3D printers.Bevel Gear:
The angle of the input shaft compared to the output shaft can vary depending on the specific design and application. It can be any angle, but commonly it is 90 degrees or less for efficient power transmission.The speed can be increased, decreased, or remain constant, depending on the gear ratios and arrangement. It depends on the sizes and number of teeth on the gears.The torque can also be increased, decreased, or remain constant, depending on the gear ratios and arrangement. It depends on the sizes and number of teeth on the gears.If the input gear is smaller than the output gear, it typically results in increased speed and decreased torque due to the gear ratio. The output gear rotates faster but with less force.The gear ratio is determined by the sizes and number of teeth on the gears. It is calculated by dividing the number of teeth on the output gear by the number of teeth on the input gear.The flow of power is reversible in bevel gears, allowing the input shaft to turn by turning the output shaft.Bevel gears are used in various applications such as automotive differentials, hand drills, and power tools.Worm & Wheel:
The angle of the input shaft (worm) compared to the output shaft (wheel) is typically 90 degrees.The speed is typically decreased due to the single-thread design of the worm, which has fewer teeth in contact with the wheel at any given time.The torque is usually increased in worm and wheel mechanisms, providing higher power transmission capability.The worm is the input gear, and the wheel is the output gear in this arrangement.The gear ratio is determined by the number of teeth on the worm and the wheel. It is calculated by dividing the number of teeth on the wheel by the number of threads on the worm..The flow of power is not reversible in worm and wheel mechanisms due to the self-locking nature of the worm. It prevents the wheel from driving the worm.The direction of travel is not reversible as the mechanism relies on the helical interaction between the worm and wheel.Worm gears are commonly used in applications such as conveyor systems, lifting equipment, and automotive steering systems.Leadscrew:
The input movement for a leadscrew can be rotary (rotating the crank) or linear (pushing or pulling the screw block).The output movement of a leadscrew is linear, as the screw block moves along the screw's axis.The number of revolutions of the crank needed to move the screw block 1 inch depends on the leadscrew's pitch. The pitch is the distance between each thread on the screw.The flow of power is reversible in leadscrews, as the lead screw can turn by pushing or pulling the screw block.In the output, the force is increased, allowing for greater pushing or pulling capability, while the speed is typically decreased compared to the input.The direction of travel is reversible in leadscrew mechanisms. It works regardless of the crank's direction.Leadscrews are commonly used in CNC machines, 3D printers, and precision positioning systems for accurate linear motion control.For more such question on tools
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Read It!
Principal David Sweeney says that his school has put many plans in place to stop truancy. One plan is calling
parents' cell phones. If a child is sick, parents receive a message right away. If they know that their child is home
sick, they can ignore the message. If not, they can get in touch with the school to find out what is going on.
Sweeney claims that the plan is working for his school, which has 900 students between the ages of 12 and 18.
The only problem he has had was from students who refused to share their parents' cell numbers.
Do It!
The plan will help the school and parents to
A resist
B communicate
C barter
D remember
Submit
The plan will help the school and parents to communicate (option B).
What is the plan?The school can quickly tell parents if their child is absent by calling their parents' cell phones or sending them messages. This helps parents know what's happening with their child and can help with any concerns about skipping school.
So, This communication helps parents know what's going on and lets them do what's needed to make sure their child goes to school. It means the school can call parents on their cell phones to talk about their child's attendance. This way helps to quickly know when a child is not at school.
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how to power clip in corel draw
Answer:
Open CorelDRAW and create a new document or open an existing one.Select the object or shape that you want to use as the container for the PowerClip. This object will act as the frame or mask that holds the content.Go to the "Arrange" menu at the top of the screen and choose "PowerClip" from the dropdown menu. Alternatively, you can use the keyboard shortcut Ctrl + K.A PowerClip dialog box will appear. Click on "Place inside container" and then "OK."You will notice that the cursor changes to a small arrow. Click on the object or shape that you want to insert or clip inside the container.The selected object or shape will now be inserted into the container and clipped according to its boundaries.To edit the contents of the PowerClip, double-click on the container object. This will enter the editing mode, where you can move, resize, or modify the clipped object.To exit the editing mode and return to the regular workspace, click outside the container object or press Esc on your keyboard.Explanation:
hope this helps
What is displayed if you enter the following code in IDLE?
>>>print(5 + 11)
Answer:
Explanation:
If you enter the following code in IDLE:
```python
>>> print(5 + 11)
```
The output displayed in the console will be:
```
16
```
The code calculates the sum of 5 and 11, which is 16, and then uses the `print()` function to display the result on the console.
a. What is the desktop? List its components.
The desktop refers to the physical computer setup that typically consists of several components. The components of a desktop computer can vary depending on the specific configuration and user preferences, but here are the common components:
1. Central Processing Unit (CPU): The CPU, also known as the processor, is the brain of the computer that performs most of the calculations and executes instructions.
2. Motherboard: The motherboard is the main circuit board that connects and holds together all the components of the computer. It provides communication pathways and power supply to the other components.
3. Random Access Memory (RAM): RAM is the temporary memory that the computer uses to store data and instructions for quick access by the CPU. It allows for faster data processing and multitasking.
4. Storage Devices: Desktop computers typically have one or more storage devices, such as a hard disk drive (HDD) or solid-state drive (SSD), to store the operating system, programs, and user data.
5. Graphics Card: The graphics card, also known as the video card or GPU (Graphics Processing Unit), handles the display and rendering of graphics and videos. It can have dedicated memory and processing power for better performance in gaming or graphic-intensive tasks.
6. Power Supply Unit (PSU): The PSU provides electrical power to all the components in the desktop computer, converting the incoming AC power into the required DC power.
7. Monitor: The monitor is the display screen that shows the visual output of the computer. It can be a separate component or integrated into an all-in-one desktop.
8. Keyboard and Mouse: These input devices allow users to interact with the computer by inputting commands, typing, and controlling the cursor.
9. Optical Drives: Although becoming less common, some desktop computers may have optical drives like CD/DVD drives for reading or writing optical discs.
10. Expansion Slots: Desktops often include expansion slots on the motherboard, allowing users to add additional components like graphics cards, sound cards, or network cards to enhance functionality.
11. Cooling System: To prevent overheating, desktop computers usually have cooling systems that include fans, heat sinks, and sometimes liquid cooling systems.
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♥️ [tex]\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}[/tex]
When this logic block is included in a control structure, what must be the
case for the entire condition to be met?
and -
A. One or both of the conditions must be true.
B. Both conditions must be true.
C. Only one of the conditions must be true.
D. Neither condition must be true.
Answer:
B
Explanation:
Based on the given options, the correct answer would be:
B. Both conditions must be true.
When this logic block is included in a control structure, for the entire condition to be met, both conditions must be true.
Which of the following statements are true about how technology has changed work? Select 3 options. Responses Businesses can be more profitable by using communication technology to reduce the costs of travel. Businesses can be more profitable by using communication technology to reduce the costs of travel. With the spread of technology and the Internet, smaller businesses are not able to compete as effectively as before. With the spread of technology and the Internet, smaller businesses are not able to compete as effectively as before. In a gig economy, workers are only hired when they are needed for as long as they are needed. In a gig economy, workers are only hired when they are needed for as long as they are needed. Through the use of the Internet and collaboration tools more workers are able to perform their jobs remotely. Through the use of the Internet and collaboration tools more workers are able to perform their jobs remotely. Technology has not really changed how businesses operate in the last fifty years. Technology has not really changed how businesses operate in the last fifty years.
The three genuine statements almost how technology has changed work are:
Businesses can be more productive by utilizing communication technology to decrease the costs of travel. This can be genuine since advances like video conferencing and virtual gatherings permit businesses to conduct gatherings, transactions, and collaborations remotely, lessening the require for costly travel courses of action.With the spread of technology and the Web, littler businesses are not able to compete as successfully as some time recently. This explanation is genuine since innovation has empowered bigger companies to use their assets and reach a worldwide advertise more effortlessly, making it challenging for littler businesses to compete on the same scale.Through the utilize of the Web and collaboration devices, more laborers are able to perform their occupations remotely. This explanation is genuine as innovation has encouraged farther work courses of action, allowing employees to work from anyplace with an online association. Collaboration instruments like extend administration computer program and communication stages have made inaccessible work more doable and effective.Technology explained.
Technology alludes to the application of logical information, aptitudes, and devices to form innovations, fathom issues, and move forward proficiency in different spaces of human movement. It includes the improvement, usage, and utilize of gadgets, frameworks, and processes that are outlined to achieve particular assignments or fulfill specific needs.
Technology can be broadly categorized into distinctive sorts, such as data technology, communication technology, therapeutic innovation, mechanical technology, and transportation technology, among others. These categories include different areas, counting computer science, hardware, broadcast communications, building, and biotechnology.
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3. Of all the locations in the list below, which has the maximum number of job postings?
L= ["Los Angeles", "New York", "San Francisco", "Washington DC", "Seattle"]
Seattle
Washington DC
Log Angeles
New York
Among the locations in the given list, New York has the maximum number of job postings. So, the correct answer is New York.
To determine the location with the maximum number of job postings, we need to analyze the list provided:
Los Angeles, New York, San Francisco, Washington DC, and Seattle. Based on general knowledge and trends, New York is known for its vibrant job market and diverse industries, making it a likely candidate for having the highest number of job postings among the given locations.
However, without specific data on the actual number of job postings in each location, we cannot provide a definitive answer. Job market dynamics can vary over time, and different industries may have different levels of job opportunities in each city. It's important to note that job availability can be influenced by factors such as economic conditions, industry growth, and local demand.In summary, considering the given list of locations, New York is generally considered a major center for job opportunities and is likely to have the maximum number of job postings. However, without precise data, it is not possible to provide an exact answer. Among the locations in the given list, New York has the maximum number of job postings.
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Which of the following best describes the evolution of the strategic impact of analytics in
the organization?
O Tactical - Competitive advantage
O High cost - low cost
O Reporting - Innovation
Low value -High value
Trace the flow of data through the data warehouse from beginning to end.Support your answer
Explanation:
The flow of data through a data warehouse typically follows a specific process. Here is a general overview of the data flow from beginning to end:
1. Data Sources:
The data warehouse begins with various data sources, which can include transactional databases, external systems, flat files, APIs, or any other sources where relevant data is stored. These sources may be distributed across different departments or systems within an organization.
2. Data Extraction:
The first step is to extract the data from the different sources. This involves identifying the relevant data and retrieving it in a suitable format for further processing. Extraction methods may include direct database connections, data integration tools, or custom scripts.
3. Data Transformation:
Once the data is extracted, it goes through a series of transformations to make it suitable for analysis and storage in the data warehouse. This includes cleaning the data, removing duplicates, standardizing formats, aggregating values, applying business rules, and resolving inconsistencies.
4. Data Loading:
The transformed data is then loaded into the data warehouse. This step involves mapping the transformed data to the appropriate tables and columns within the data warehouse schema. Loading methods can vary, including bulk loading, incremental loading, or real-time streaming depending on the requirements and capabilities of the data warehouse.
5. Data Storage:
The loaded data is stored in the data warehouse, typically organized in a dimensional or star schema. The data warehouse employs optimized storage structures and indexing techniques to support efficient querying and analysis. This structured storage enables quick access and retrieval of data for reporting and analysis purposes.
6. Data Integration:
In addition to the primary data sources, the data warehouse may also integrate data from other internal or external systems. This integration process involves combining data from multiple sources to provide a unified view for analysis and reporting. Integration may include data from operational systems, external data providers, or third-party services.
7. Data Access and Analysis:
With the data stored in the data warehouse, users can access and analyze the data using various tools and techniques. This includes running ad-hoc queries, generating reports, creating dashboards, and performing advanced analytics. Business intelligence (BI) tools, reporting software, or custom-built applications are often used to facilitate data analysis and visualization.
8. Data Presentation:
The analyzed data is presented to end-users in a meaningful and understandable format. This can include interactive reports, visualizations, charts, graphs, or any other form that effectively communicates the insights derived from the data. The presentation layer may vary based on the needs and preferences of the intended audience.
Throughout this data flow, data quality and data governance play crucial roles. Data quality measures ensure the accuracy, consistency, completeness, and integrity of the data, while data governance practices enforce standards, policies, and security measures to maintain the reliability and confidentiality of the data in the data warehouse.
It's important to note that the specific details and technologies used in each step can vary depending on the organization, data warehouse architecture, and tools employed. The outlined flow provides a general overview of the typical data flow from beginning to end in a data warehouse environment.
When this logic block is included in a control structure, what must be the
case for the entire condition to be met?
and -
A. One or both of the conditions must be true.
B. Both conditions must be true.
C. Only one of the conditions must be true.
D. Neither condition must be true.
Answer:
B
Explanation:
a AND b is only true if a is true and b is true.
