this presentation describes how series parallel circuit works and how to make these circuits in a very simple and easy way according to understanding of a kid. It's a very use full presentation for school to demonstrate how series and parallel circuits works.
Visit:
www.cyberlabzone.com
IEEE-IAS 2012.02.18 Presentation - Short Circuit Testing of Fire Pump Control...James S Nasby
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Short Circuit & Withstand Testing of Fire Pump Controllers
IEEE-IAS 2012.02.18 Presentation - Short Circuit Testing of Fire Pump Control...James S Nasby
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Short Circuit & Withstand Testing of Fire Pump Controllers
In this presentation I defined the series and parallel circuit's and their behaviour how to these circuit works and their advantages and disadvantages it may be help you to understand their use.
Deceptive Marketing (also known as “dark Marketing”) are tricks used in websites and apps that
make you do things that you didn’t mean to, like buying or signing up for something. The purpose of
this site is to spread awareness and to shame companies that use these patterns.
How does Deceptive Marketing work?
When you use websites and apps, you don’t read every word on every page—you skim read and
make assumptions. If a company wants to trick you into doing something, they can take advantage
of this by making a page look like it is saying one thing when it is in fact saying another. You can
defend yourself by learning about deceptive marketing.
Types of Deceptive Marketing
Trick questions
While filling in a form you respond to a question that tricks you into giving an answer you didn’t
intend. When glanced upon quickly the question appears to ask one thing, but when read carefully it
asks another thing entirely.
This is very common when registering with a service. Typically a series of checkboxes is shown, and
the meaning checkboxes is alternated so that ticking the first one means “opt out” and the second
means “opt in”. Confusing language is often also used. Currys PC World provides a good example of
this on their checkout collection
BRAIN Computer Interface (BCI) is a technique that
provides direct interface between the human brain and the
computer. BCI techniques are broadly classified into
invasive and non-invasive techniques. Non-invasive
techniques are becoming more popular and more research is
being done on this topic. There are various non-invasive BCI
techniques such as EEG, Electro-Oculography. EEG technique
deploys an electrode cap that is placed on the user’s scalp for
the acquisition of the EEG signal, which relates the scalp
potential differences to various complex actions. Classification
of the EEG signal has been made into several bands like alpha,
beta, delta, theta and mu suppression, each corresponding to
various states of being like relaxing, ranging over 8-14 Hz;
concentrating, ranging over 13-30 Hz; deep sleep, from 0-4
Hz; meditating from 4-8 Hz; moving your hands or legs or just
by imagining these motor actions respectively. As it is being
non-invasive in nature, it has an advantage over traditional
BMI, not being hazardous to health. With the advent of
technology the EEG acquisition devices are made more
compact, handy and wireless. Using the above mentioned
technique, a simple thought controlled wheelchair system has
been proposed in this paper. A section that briefly explains the
various blocks included in the system is also added in this
paper
Mechanism of fullerene synthesis in the ARC REACTOR (Vivek Chan 2013)Vivek chan
A mathematical model for the arc reactor which takes into account a. cooling and mixing of carbon vapour with a buffer
gas, b . non-isothermal kinetics of carbon clusters growth and c. formation of soot particles and heterogeneous reactions at
their surface has been developed. The model gives quantitative coincidence of experimental data with calculated values both
for the fullerene yield and ratio C70rC60 in the products of the arc synthesis run under widely varied conditions. Numerical
analysis of the model has shown that experimental data obtained for the arc synthesis strictly constrain the choice of the
mechanism of fullerene formation.
[Vivek Chan 2013]
EEG Acquisition Device to Control Wheelchair Using ThoughtsVivek chan
With the advancements in technology and health-care facilities, the number of senior citizens has increased and thus the number of elderly who find it difficult to walk. Hence there is a need for designing a wheelchair that is user friendly and involves fewer complexities. In this context, we propose a thought controlled wheelchair, which uses the captured signals from the brain and process it to control the wheelchair. This wheelchair can also be used by the physically challenged who depend on others for locomotion. Rehabilitation centers at hospitals can also make use of this wheelchair. In this paper, we explain the design and analysis of the thought-controlled wheelchair. In addition, we present some of the experiments that were carried out and the corresponding results in this paper.
http://www.vivek-chan.in
Vivek has his college degree in Computer Science and Engineering. With his strong background in Algorithms and Software Development, Web Development, Graphics Designing ,Internet Marketing, Cyber Security and also in Electronic security and Embedded systems in combination with his inter-personal skills and in-depth knowledge of current research in these fields.
http://www.vivek-chan.in
Vivek has his college degree in Computer Science and Engineering. With his strong background in Algorithms and Software Development, Web Development, Graphics Designing ,Internet Marketing, Cyber Security and also in Electronic security and Embedded systems in combination with his inter-personal skills and in-depth knowledge of current research in these fields.
http://www.vivek-chan.in
Full Shri Ramcharitmanas in Hindi Complete With Meaning (Ramayana)Vivek chan
Ramcharitmanas (Devanāgarī: श्रीरामचरितमानस, IAST: ŚrīRāmacaritamānasa), also spelt as Ramacharitamanasa, is an epic poem in Awadhi dialect of Hindi, composed by the 16th-century Indian bhakti poet Goswami Tulsidas (c.1532–1623). Ramcharitmanas literally means "Lake of the deeds of Rama". Ramcharitmanas is considered as one of the greatest works of Hindi literature. The work has been acclaimed as "the living sum of Indian culture", "the tallest tree in the magic garden of medieval Indian poetry", "the greatest book of all devotional literature" and "the best and most trustworthy guide to the popular living faith of the Indian people".
The core of the work is considered by some to be a poetic retelling of the events of the Sanskrit epic Ramayana, centered on the narrative of Rama, the scion of the family tree of Raghu of the Sun Dynasty and the crown prince of Ayodhya who is also considered in Hindu tradition as one of the Avataras of Vishnu. However, Tulsidas never alludes to Ramcharitmanas as being a retelling of Valmiki Ramayana. He calls the epic Ramcharitmanas as the story of Rama was stored in the mind (Mānasa) of Shiva before he narrated the same to His consort Parvati. Tulsidas claims to have received the story through his guru, Narharidas. Tulsidas was unconscious (Acheta, Devanāgarī: अचेत) and the story was stored in his mind (Mānasa) for long before he wrote it down as Ramcharitmanas. The epic poem is, therefore, also referred to as Tulsikrit Ramayana (literally, The Ramayana composed by Tulsidas).
In this presentation I defined the series and parallel circuit's and their behaviour how to these circuit works and their advantages and disadvantages it may be help you to understand their use.
Deceptive Marketing (also known as “dark Marketing”) are tricks used in websites and apps that
make you do things that you didn’t mean to, like buying or signing up for something. The purpose of
this site is to spread awareness and to shame companies that use these patterns.
How does Deceptive Marketing work?
When you use websites and apps, you don’t read every word on every page—you skim read and
make assumptions. If a company wants to trick you into doing something, they can take advantage
of this by making a page look like it is saying one thing when it is in fact saying another. You can
defend yourself by learning about deceptive marketing.
Types of Deceptive Marketing
Trick questions
While filling in a form you respond to a question that tricks you into giving an answer you didn’t
intend. When glanced upon quickly the question appears to ask one thing, but when read carefully it
asks another thing entirely.
This is very common when registering with a service. Typically a series of checkboxes is shown, and
the meaning checkboxes is alternated so that ticking the first one means “opt out” and the second
means “opt in”. Confusing language is often also used. Currys PC World provides a good example of
this on their checkout collection
BRAIN Computer Interface (BCI) is a technique that
provides direct interface between the human brain and the
computer. BCI techniques are broadly classified into
invasive and non-invasive techniques. Non-invasive
techniques are becoming more popular and more research is
being done on this topic. There are various non-invasive BCI
techniques such as EEG, Electro-Oculography. EEG technique
deploys an electrode cap that is placed on the user’s scalp for
the acquisition of the EEG signal, which relates the scalp
potential differences to various complex actions. Classification
of the EEG signal has been made into several bands like alpha,
beta, delta, theta and mu suppression, each corresponding to
various states of being like relaxing, ranging over 8-14 Hz;
concentrating, ranging over 13-30 Hz; deep sleep, from 0-4
Hz; meditating from 4-8 Hz; moving your hands or legs or just
by imagining these motor actions respectively. As it is being
non-invasive in nature, it has an advantage over traditional
BMI, not being hazardous to health. With the advent of
technology the EEG acquisition devices are made more
compact, handy and wireless. Using the above mentioned
technique, a simple thought controlled wheelchair system has
been proposed in this paper. A section that briefly explains the
various blocks included in the system is also added in this
paper
Mechanism of fullerene synthesis in the ARC REACTOR (Vivek Chan 2013)Vivek chan
A mathematical model for the arc reactor which takes into account a. cooling and mixing of carbon vapour with a buffer
gas, b . non-isothermal kinetics of carbon clusters growth and c. formation of soot particles and heterogeneous reactions at
their surface has been developed. The model gives quantitative coincidence of experimental data with calculated values both
for the fullerene yield and ratio C70rC60 in the products of the arc synthesis run under widely varied conditions. Numerical
analysis of the model has shown that experimental data obtained for the arc synthesis strictly constrain the choice of the
mechanism of fullerene formation.
[Vivek Chan 2013]
EEG Acquisition Device to Control Wheelchair Using ThoughtsVivek chan
With the advancements in technology and health-care facilities, the number of senior citizens has increased and thus the number of elderly who find it difficult to walk. Hence there is a need for designing a wheelchair that is user friendly and involves fewer complexities. In this context, we propose a thought controlled wheelchair, which uses the captured signals from the brain and process it to control the wheelchair. This wheelchair can also be used by the physically challenged who depend on others for locomotion. Rehabilitation centers at hospitals can also make use of this wheelchair. In this paper, we explain the design and analysis of the thought-controlled wheelchair. In addition, we present some of the experiments that were carried out and the corresponding results in this paper.
http://www.vivek-chan.in
Vivek has his college degree in Computer Science and Engineering. With his strong background in Algorithms and Software Development, Web Development, Graphics Designing ,Internet Marketing, Cyber Security and also in Electronic security and Embedded systems in combination with his inter-personal skills and in-depth knowledge of current research in these fields.
http://www.vivek-chan.in
Vivek has his college degree in Computer Science and Engineering. With his strong background in Algorithms and Software Development, Web Development, Graphics Designing ,Internet Marketing, Cyber Security and also in Electronic security and Embedded systems in combination with his inter-personal skills and in-depth knowledge of current research in these fields.
http://www.vivek-chan.in
Full Shri Ramcharitmanas in Hindi Complete With Meaning (Ramayana)Vivek chan
Ramcharitmanas (Devanāgarī: श्रीरामचरितमानस, IAST: ŚrīRāmacaritamānasa), also spelt as Ramacharitamanasa, is an epic poem in Awadhi dialect of Hindi, composed by the 16th-century Indian bhakti poet Goswami Tulsidas (c.1532–1623). Ramcharitmanas literally means "Lake of the deeds of Rama". Ramcharitmanas is considered as one of the greatest works of Hindi literature. The work has been acclaimed as "the living sum of Indian culture", "the tallest tree in the magic garden of medieval Indian poetry", "the greatest book of all devotional literature" and "the best and most trustworthy guide to the popular living faith of the Indian people".
The core of the work is considered by some to be a poetic retelling of the events of the Sanskrit epic Ramayana, centered on the narrative of Rama, the scion of the family tree of Raghu of the Sun Dynasty and the crown prince of Ayodhya who is also considered in Hindu tradition as one of the Avataras of Vishnu. However, Tulsidas never alludes to Ramcharitmanas as being a retelling of Valmiki Ramayana. He calls the epic Ramcharitmanas as the story of Rama was stored in the mind (Mānasa) of Shiva before he narrated the same to His consort Parvati. Tulsidas claims to have received the story through his guru, Narharidas. Tulsidas was unconscious (Acheta, Devanāgarī: अचेत) and the story was stored in his mind (Mānasa) for long before he wrote it down as Ramcharitmanas. The epic poem is, therefore, also referred to as Tulsikrit Ramayana (literally, The Ramayana composed by Tulsidas).
CyberLab Training Division :
The .NET Framework is Microsoft's Managed Code programming model for building applications on Windows clients, servers, and mobile or embedded devices. Microsoft's .NET Framework is a software technology that is available with several Microsoft Windows operating systems. In the following sections describes , the basics of Microsoft .Net Frame work Technology and its related programming models.
What is Microsoft .Net Framework
what are the functions of microsoft .net framework?
Common Language Runtime in .Net Framework
How to Common Language Runtime
What is .Net Framework Class Library
What is Common Language Specification
What is Common Type System
What is Microsoft Intermediate Language
What is Portable Executable (PE) File Format
What is Microsoft Just In Time Compiler
How to Managed Code - Microsoft .Net Framework
What is .Net Framework Metadata
what is .Net Framework Assembly
What is Assembly Manifest
What is Global Assembly Cache
What is a .Net Satellite Assembly?
What are the contents of an Assembly?
How to Private Assembly and Shared Assembly
What is Microsoft .Net Strong Name
What is .Net Namespaces
What is Application Domain
What is Code Access Security
What is Garbage Collection
.Net Threads
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
The .NET Framework is Microsoft's Managed Code programming model for building applications on Windows clients, servers, and mobile or embedded devices. Microsoft's .NET Framework is a software technology that is available with several Microsoft Windows operating systems. In the following sections describes , the basics of Microsoft .Net Frame work Technology and its related programming models.
What is Microsoft .Net Framework
what are the functions of microsoft .net framework?
Common Language Runtime in .Net Framework
How to Common Language Runtime
What is .Net Framework Class Library
What is Common Language Specification
What is Common Type System
What is Microsoft Intermediate Language
What is Portable Executable (PE) File Format
What is Microsoft Just In Time Compiler
How to Managed Code - Microsoft .Net Framework
What is .Net Framework Metadata
what is .Net Framework Assembly
What is Assembly Manifest
What is Global Assembly Cache
What is a .Net Satellite Assembly?
What are the contents of an Assembly?
How to Private Assembly and Shared Assembly
What is Microsoft .Net Strong Name
What is .Net Namespaces
What is Application Domain
What is Code Access Security
What is Garbage Collection
.Net Threads
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
The .NET Framework is Microsoft's Managed Code programming model for building applications on Windows clients, servers, and mobile or embedded devices. Microsoft's .NET Framework is a software technology that is available with several Microsoft Windows operating systems. In the following sections describes , the basics of Microsoft .Net Frame work Technology and its related programming models.
What is Microsoft .Net Framework
what are the functions of microsoft .net framework?
Common Language Runtime in .Net Framework
How to Common Language Runtime
What is .Net Framework Class Library
What is Common Language Specification
What is Common Type System
What is Microsoft Intermediate Language
What is Portable Executable (PE) File Format
What is Microsoft Just In Time Compiler
How to Managed Code - Microsoft .Net Framework
What is .Net Framework Metadata
what is .Net Framework Assembly
What is Assembly Manifest
What is Global Assembly Cache
What is a .Net Satellite Assembly?
What are the contents of an Assembly?
How to Private Assembly and Shared Assembly
What is Microsoft .Net Strong Name
What is .Net Namespaces
What is Application Domain
What is Code Access Security
What is Garbage Collection
.Net Threads
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
Intel VTune Amplifier is a commercial application for software performance analysis for 32 and 64-bit x86 based machines, and has both GUI and command line interfaces. It is available for both Linux and Microsoft Windows operating systems. Although basic features work on both Intel and AMD hardware, advanced hardware-based sampling requires an Intel-manufactured CPU.
Whether you are tuning for the first time or doing advanced performance optimization, Intel® VTune Amplifier provides a rich set of performance insight into CPU & GPU performance, threading performance & scalability, bandwidth, caching and much more. Analysis is faster and easier because VTune Amplifier understands common threading models and presents information at a higher level that is easier to interpret. Use its powerful analysis to sort, filter and visualize results on the timeline and on your source.
It is available as part of Intel Parallel Studio or as a stand-alone product.
VTune Amplifier assists in various kinds of code profiling including stack sampling, thread profiling and hardware event sampling. The profiler result consists of details such as time spent in each sub routine which can be drilled down to the instruction level. The time taken by the instructions are indicative of any stalls in the pipeline during instruction execution. The tool can be also used to analyze thread performance. The new GUI can filter data based on a selection in the timeline.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
ASP.NET is a web application framework developed and marketed by Microsoft to allow programmers to build dynamic web sites. It allows you to use a full featured programming language such as C# or VB.NET to build web applications easily.
This tutorial covers all the basic elements of ASP.NET that a beginner would require to get started.
Audience
This tutorial has been prepared for the beginners to help them understand basic ASP.NET programming. After completing this tutorial you will find yourself at a moderate level of expertise in ASP.NET programming from where you can take yourself to next levels.
Prerequisites
Before proceeding with this tutorial, you should have a basic understanding of .NET programming language. As we are going to develop web-based applications using ASP.NET web application framework, it will be good if you have an understanding of other web technologies such as HTML, CSS, AJAX. etc
ASP.NET supports three different development models:
Web Pages, MVC (Model View Controller), and Web Forms.
For More Details.
Visit: http://www.cyberlabzone.com
CyberLab Training Division :
ASP.NET is a web application framework developed and marketed by Microsoft to allow programmers to build dynamic web sites. It allows you to use a full featured programming language such as C# or VB.NET to build web applications easily.
This tutorial covers all the basic elements of ASP.NET that a beginner would require to get started.
Audience
This tutorial has been prepared for the beginners to help them understand basic ASP.NET programming. After completing this tutorial you will find yourself at a moderate level of expertise in ASP.NET programming from where you can take yourself to next levels.
Prerequisites
Before proceeding with this tutorial, you should have a basic understanding of .NET programming language. As we are going to develop web-based applications using ASP.NET web application framework, it will be good if you have an understanding of other web technologies such as HTML, CSS, AJAX. etc
ASP.NET supports three different development models:
Web Pages, MVC (Model View Controller), and Web Forms.
For More Details.
Visit: http://www.cyberlabzone.com
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Simple Circuit
What makes a circuit?A circuit must have:A source of electricityA closed loop must exist to allow the electricity to flow around.A break in the loop, breaks the circuit, and the electricity will not flow.
Electricity is the flow of electrons. Electrons are:Very smallHave a negative chargeSpin round and round very fastMove very fastSo you can not see electricity, but you can see how it affects things.
Circuit with a switch
Switches are very handy. They make it safe and easy to control electricity.
LED Circuit with a switch
Switches are very handy. They make it safe and easy to control electricity.
We conduct electricity
We conduct electricity.Why do we conduct electricity?We are made up of about 95% water. Water conducts electricity, so we do because we are mostly water. Some bits of us, like our nails are not very watery, so those bits do not conduct very well.
Cardboard Circuit board
Pencils are made of a conductive material. It is called carbon.We can make a complicated shape, like a real circuit board track, that will conduct electricity.
Carbon is used in real electronic components called resistors.
Water conducts electricity
Water conducts electricity, but salty water conducts electricity even better.
Resistors
Resistors are used in electronic circuits to control and limit how much electricity is flowing. Instead of using the blue LED, if we use the red LED, we MUST put a resistor in the circuit – otherwise the red LED will break!
They are very important to make real circuits that operate efficiently and accurately. Without resistors, electronic circuits could not be made to work. They would explode as too much electricity would flow!
Switch with two LED circuits
This circuit swaps which LED is on as you toggle the switch.
Toggling circuits are very common in electronic circuits.
Potentiometer – a variable resistor with dual LEDs
In this circuit, as you turn the pot, one LED gets brighter as the other gets darker.
Switch with two circuits
This circuit swaps which Bulb is on as you toggle the switch.
Toggling circuits are very common in electronic circuits.
Simple LED Circuit
LEDs only conduct electricity one way.
You have to wire them correctly in the circuit for them to light up.
The long lead must be connected to the + side of the battery. The short lead connects to the – side.
LEDs can break easily if they are connected the wrong way round.
Switches in combinations
Switches can be joined up in different combinations.The circuit here is called a series combination.Both switches have to be closed for the LED to come on.
Switches in parallel
These switches are in a parallel circuit.In this circuit, either switch will turn the LED on.
Special house light switch combination
Switches are often wired like this in home and offices. It allows the person at either switch to turn the light on or off.Can you work out how the circuit does this?
Magnetic switch
People have made switches that can be turned on and off using a magnetic field.
The switch uses two different types of metal. One of them is sensitive to magnetic fields, and the other one isn’t. The two metals are sandwiched together. When the magnetic field comes close to the sandwich, the straight sandwich becomes bent, and bends onto another non-bending piece of metal, and makes the circuit.
Resistors in series
Putting two resistors in series as shown in the circuit here, will halve the amount of current flowing through the circuit, compared to a single resistor of the same value.
Resistors in parallel
Putting two resistors in parallel as shown in the circuit here, will double the amount of current flowing through the circuit, compared to a single resistor of the same value.
Potentiometer – a variable resistor
A potentiometer is a resistor that can be varied. It is often called a variable resistor.In this circuit the LED gets brighter or dimmer as you turn the shaft on the potentiometer from one side to the other.It is also called a pot for short.
Capacitors
Capacitors are used in electronic circuits to store small amounts of electricity.
The circuit above shows how a capacitor can store electricity then use this stored electricity to flash an LED once.
The circuit below uses a capacitor in a different way. It will also flash the LED once, and this time it does the flash when the battery is first connected. To make the LED flash again we need to let the capacitor first lose its charge. This can be done by putting a croc lead directly clipped across the capacitor so that the electric charge in the capacitor is discharged in itself and the wire.
Capacitors are not as easy to see quickly what they do or what they do in different combinations. The combination of capacitors and resistors results in even more uses and features used in electronic circuits from radios to handphones to computers to toys..
Capacitors in series
Putting two capacitors in series as shown in the circuit here, will halve the time the electricity flows for, compared to a single capacitor of the same value.
Capacitors in parallel
Putting two capacitors in parallel as shown in the circuit here, will double the time the electricity flows for, compared to a single capacitor of the same value.
Light Dependant Resistor
Using very special chemicals, scientists have made resistors that change when light is shone on them.
Transistor
The simplest way to think of transistors is as very small switches. Instead of using a mechanical movement like in a normal switch, transistors use a little bit of electricity. You can switch them on just using the electricity that can flow through your body.
Notice how much brighter the LED is when you use a transistor in the circuit compared to just your fingers – see earlier experiment with an LED and fingers.
With this circuit, you can use your fingers to switch on any LED, not just sensitive ones.
Transistors come in many shapes, sizes and types. The one shown here is of the earliest types invented. There are three wires on it. The base controls whether any electricity flows between the collector and the emitter. By outing a little electricity through from the base to the emitter, a lot of current will flow between the collector and the emitter.
There are thousands or even millions of transistors in every day equipment like computers and handphones. They are the working components in microchips or Integrated circuits.
Transistor with LDR
This circuit will cause the LED to come on when the ambient light drops. The resistance of the LDR in bright light will be low, and will therefore keep the transistor turned off. In dark, the LDR resistance will rise, and the resistor connected using the Green leads will be able to turn the transistor on. However, the value of the resistor will need to be chosen to work with the resistnace of the LDR. LDRs vary in resistance values in dark and light depending on the part number of the LDR. If you have trouble making the circuit work, try different resistor values. A variable resistor can help correctly “bias” the transistor.The resistor should probably be in the 10K ohm range.
Transistors react to light
Transistors will react to light if you let them. That is why they are always sealed in cans or packages.
Two Transistor Flasher
This circuit turns on each LED for a short while then turns on the other one. You can change the speed of the flashing by chnaging the resistor values and capacitor values.
Integrated Circuits
Integrated Circuits, or ICs, or Chips are lots of transistors and other components all joined together on a single piece of silicon. They are called integrated, because they have all the circuit components joined or integrated together on the chip of silicon.
And because there are many different circuits that you could design, there are many different types and designs of chips. In fact, the number is growing daily, and by now there are millions of designs.
Each design needs its on data sheet on what the circuit is inside the chip. It also needs to describe how to connect to it.
When you look at a chip, you do not how to connect to it unless you know which one it is, and you have read and understood the data sheet. Some data sheets are over 1000 pages long.
So although these devices all have a common name – chip – there are many many different types, doing lots of different functions.
The phrase - computer chip – means only a very general thing. To electronic engineers, they need to know its model number and use its data sheet to know how to design circuits around it.
The first Integrated Circuit chip we will use is called a 555 timer. We can use this chip to easily make a flashing LED. Flashing LEDs are common in lots of things from toys to phones to cars to planes.
So, how do we make something flash? We need two things – something to time how long the LED is off, and something to time how long it is on.
The 555 timer has all this circuitry inside it, integrating lots of transistors inside it to make the timers. Below is the circuit inside the chip. This is a very simple chip compared to almost all other ones these days. But it is very complicated compared to all the other circuits we have made earlier. All these components take up a space less than 1mm x 1mm. The package we connect to is much bigger to protect the chip, and make it easy to connect and solder to.
So to connect to the chip, we do not have to know all the details inside. The manufacturer of the chip gives us information on how to connect to it with examples and values.
So to connect to the chip, we do not have to know all the details inside. The manufacturer of the chip gives us information on how to connect to it with examples and values.
Above is the information from the manufacturer on how to make an oscillator. We can use this circuit to make an LED flasher.
Below is a conversion of the circuit above to one we can wire using croc leads. You have to be very careful when connecting the leads to the chip, as the chip is really designed to be soldered onto a circuit board.
Make sure none of the croc leads touch each other. You can bend the legs of the chip a bit to make it easier to connect. Connect the battery last to make it safe as you wire up the rest of the circuit. Take your time..
Connect the white croc leads to the LED, capacitor and the chip. Note which leg goes where.
Connect the green croc leads to the resistors and the chip.
Connect the two yellow leads. From the capacitor to the chip. From the resistors to the chip.
Connect the black croc leads to the battery, chip and capacitor.
Connect the red leads to the battery +, the resistors and the chip. Connect the battery last to make it safe as you wire up the rest of the circuit.
The LED will start flashing if you have connected everything correctly.
If the circuit does not work, check every lead is connected correctly.
It is very common for circuits not to work the first time - the reason is nearly always because they have not been connected up correctly. Occasionally there is a broken component, but this is very rare.
So check your circuit carefully.