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Social Networks for Math Majors
Math or Mathematics is not as difficult as it is thought to be. Mathematical Patterns, Structures, Geometry and its use in everyday life make it beautiful. ‘Math majors’ term generally include Math students, Math professors and researchers or Mathematicians. Internet has always been a tonic for learners and whole internet is supposed to be a social network, in which one shares and others read, one asks & others answer. There are thousands of social networks (and growing) where you enjoy your days, share fun etc. However there are only a few social (mathematical) networks which are completely focused on math and related sciences. But these are brilliantly good enough to demonstrate the wisdom of mathematicians. I have tried to list my favorite social networking websites on mathematics. Please have a read and give feedback in form of comments
Click On Images To Visit Corresponding Websites.
Math.Stack Exchange
Mathematics StackExchange Website
Mathematics Stack exchange is a website dedicated to all types of mathematical discussions. You can ask questions, give answers, comment on questions and vote for it. Registration is very easy and takes seconds. Depending on your work, you are given ‘reputations’. Depending upon some special works, you are also given some privileges.
This is a free, community driven Q&A for people studying math at any level and professionals in related fields. It is a part of the Stack Exchange network of Q&A websites, and it was created through the open democratic process defined at Stack Exchange Area 51. (more…)
Nanostory of Nanotechnology
Fullerene
Well, this is not going to be a nano [very short] story either of fairies or aliens. This is a big story of Nanotechnology, one of the most advanced topics in physics. Wait. It’s not going to be so hard or advanced to read. It is really going to be a good story because I’m not going to teach you about this stuff. I am trying to say and save it’s history on MY DIGITAL NOTEBOOK. I think you all should also read this.
Nanotechnology has become a widely discussed topic today in newspapers, magazines, journals, blogs and even in television ads. It’s very common that some organization announcing ‘yet another’ “nano-conference”. Nanotechnology or nano tech in short, refers to the technology of creating materials, devices and functions using atomically manipulated matter. If you didn’t understand it clearly yet read further lines. (more…)
Cloud Computing – TECHNOLOGY and WWW
Image via Wikipedia
Intro
The much talked about Cloud Computing promises to change the way Information Technology People look at delivering IT and the way business people perceive it. This one is now a general and important part of IT.
What is “Cloud” & Why it is Connected to Computing?
The name cloud computing was inspired by the cloud symbol that’s often used to represent the Internet in flow charts and diagrams. Cloud Computing is a general term for anything that involves delivering hosted services over the Internet. 
Services? What Services?
The services are broadly devided into three catagories:
• Infrastructure-as-a-Service (IaaS):
Infrastructure as a Service involves Infrastructures, like PC, Laptop, Mobile, Notebook, Mini Note etc..
Plateform-as-a-Service(PaaS):
This involves Plateforms like Remote Server or Database or Remote Desktop.
Software-as-a-Service(SaaS):
SaaS is most important service. It is an application hosted on a remote server and accessed through the Internet. A simple and concrete example of SaaS are the free email systems offered on the internet such as Hotmail, GMail, Yahoo Mail etc. Each program meets the basic criteria of an SaaS application:
•vendor hosts (Microsoft, Google, Yahoo) all of the programs, logic and data in a central location and provides end users access to this data and the software which is run and used over the world-wide-web (WWW).
Profits of Cloud Computing
A cloud service has three distinct characterstics that differentiate it from the traditional hosting.
• It is sold on demand, typically by the minute or the hour.
• It is elastic – a user can have as much or as little of a service as they want at any given time.
• The Service is fully managed by the provides and the consumer offer nothing but a personal computer or a mobile and Internet access.
Significant innovations in virtualization and distributed computing, improved access to high speed internet and a weak economy, have accelerated interest in cloud computing.
Clean Technology – Why it is the time to be Green?
What is the ‘Need’ of this Clean Technology?
Why Not? There is a desperate need to meet the challenges caused by climate change and environmental degradation. In the past, it was the entrepreneurial spirit that contributed most to the innovations with far reaching benefits. Besides, scientists from outside the industry innovated technologies like steam power, the railways, telegraph, radios and telephone, petroleum, the automobile, computer, internet etc. etc. Yet the role of entrepreneurial innovation in addressing environmental problems has recieved relatively little attention. In this context, presently, the clean technologies have emerged.
Why is this Techology Clean?
Clean Technologies are technologies that use energy, water, raw materials and other inputs more efficiently and productively, create less waste or toxicity, deliver equal or superior performance, and improve customer profitability, through cost reduction and/or increased revenues. Such technologies are found in a broad range of industries, including energy, water, manufacturing, advanced materials and transportation.
As ?
A few examples of clean technologies are-
Wind Energy, Solar Energy, Water Filtration, Industrial Process Controls, Hybrid Electric Vehicles, etc.
Why We Should Use It?
With the decrease of available energy sources; like, petroleum, coal etc., demand for energy worldwide going through the roof and after poor effects of global warming, manufactures realise that alternatives are serious business.
Convergence of environmental, technological, economic and social factors will produce more resource-efficient technologies that will be less reliant on obsolete, polluting technologies.
Progress ?
Clean technology is an intrinsic part of a sustainable economy. Over the past few years, the importance of developing clean technologies has grown significantly and has driven the growth of what are now multi-billion dollar markets. Globally wind energy market was valued at $5 billion in the begining of 21st century, are expected to grow to $550 billion by next year, while solar energy is expected to note from $3.5 billion to $28 billion by the same timeperiod.
The measure share of the climate change in the outlook towards clean technologies has been due to the increasing realisation that this is not merely a social responsibility requirement, but also yield amazing profits.
The result of this awareness is steadily evolving into a sustainable new economy, which is based on premises of clean energy, transportation, water and materials that embody the emerging principles of industrial ecology, resource productivity and natural capitalism. Industrial houses, corporates, as well as goverments are now investing in research and developement on environment-friendly technologies.
Last Lines
There is a need in developing countries to have easy access to the technologies and cheaply. For any major change, changing political understanding on such issues, government support and prospects for business involvement is critical. For the advance of clean technologies require adequate and reliable R&D budgets, better incentive systems to promote and support clean-tech purchases by businesses and competitive price for consumers. A robust economy is as much required for encouraging clean tech investments. And That’s All. 
Dedicated to Blogadda.com for their Blogger’s Social Responsibility Program & mother Earth. GO GREEN.
Touch Screen Systems
Image via Wikipedia
A typical touchscreen input system is basically an input device like a mouse or trackpad. 
What is?
If counting as a definition, A touch screen is a computer display screen that is sensitive to human touch, allowing a user to interact with the computer by touching pictures or words on the screen.
How?
A touchscreen system is made up of a touch sensor, a controller card, and a software driver. 
WHAT ARE TOUCHSCREENS USED FOR?
Touch screens are used with information kiosks, computer-based training devices, and systems designed to help individuals who have difficulty manipulating a mouse or keyboard. Touchscreen systems are being used in a variety of applications, including point-of-sale systems, public information displays, industrial control systems, and more. 
There are a number of types of touch screen technology:
RESISTIVE:
A resistive touch screen panel is composed of several layers. When some object touches this kind of touch panel, the layers are connected at certain point which registers a touch events and sends it to the controller for processing. Resistive touch screen panels are not affected by dust or water and are the type most commonly used today. 
SURFACE ACOUSTIC WAVE:Surface acoustic wave (SAW) technology uses ultrasonic waves that pass over the touch screen panel. When the panel is touched, a portion of the wave is absorbed. This information is sent to the controller for processing.
CAPACITIVE:
A capacitive touch screen panel is coated with indium tin oxide that conducts a continuous electrical current across the sensor. When the sensor’s normal reference state is altered by someone’s finger, electronic circuits measures the resultant ‘distortion’ and informs the controller for processing. Capacitive sensors can either be touch with a bare finger or with a conductive device. Capacitive touch screens are not affected by outside elements and have high clarity.
INFRARED:
This method uses an array of vertical & horizontal IR Sensors that detect the interruption of a modulated light adam near the surface of the screen. InfraRed touch screens are used in many military applications that require a touch panel display.
STRAIN GAUGE:
In this, the screen is spring mounted on the four corners and strain gauges are used to determine deflection when the screen is touched. This technology can also measure the third dimension. This is typically used in exposed public systems such as ticket machines due to their resistance to vandalism. There are several other technologies like Optical imaging, Dispersive Signal Technology, Acoustic Pulse Recognition, Frustrated total internal reflection and Diffused laser imaging.
Related Articles
- Interactive projector that turns any flat surface into a touch screen wins UK design award (gizmag.com)
- Rumor – Apple orders capacitive screens for upcoming touchscreen iMac (edibleapple.com)
- Top 10 Touchscreen Monitors (brighthub.com)
- Hitachi Developing Capacitive Screen that Works with Styli (pocketnow.com)
Radioactive Pollution
Image via Wikipedia
What is Radioactive Polution?
Radioactive Substances and nuclear radiations (i.e., alpha, beta & gamma-particles) produced during nuclear reactions, affect our environment adversely and thus radioactive pollution is created.
Source of Radioactive Polutions & its effects
Source: Low level radioactive liquid wastes, radioactive gaseous wastes & dusts are released during nuclear explosions.
Effects:
I. The radiactive gaseous wastes are injected into the upper layer of atmosphere where, due to cooling they condense to fine-dust particles and thus Radioactive Cloud is formed. This cloud moves in the direction of the wind, settles down slowly to the surface of the earth & thus pollutes air,water & soil.
II. The radioactive substances produce energy which is so strong that the living cells are damaged or destroyed.
III. People working with radioactive elements develop tumours.
IV. Radioactive elements like strontium-90 affects our soil & through this human beings and animals are also affected adversely.
V. Nuclear explosions which are operated in sea, make sea water polluted. This affects the aquatic life.
VI. Among the radioactive radiations gamma-rays are the most dangerous, since they have high energy and high penerating power. These radiations can, therefore, pass freely in the human body, where they lose energy, which destroys the living cells by converting them into charged paticles i.e. ions. These ions are chemically very reactive & hence disrupt cell membranes, reduce the effectiveness of enzymes and even damage genes and chromosomes. All these results in diseases like Leakaemania & Cancer. 
VII. The radiations leaked from reactors damage the the health of human beings and animals.
Control Measures For Minimising Radioactive Polution:
The waste materials produced in the mining, enrichment and fission of U-235 inside the reactor are collective called Nuclear Wastes. At present most of the nuclear wastes are being stored in strong leak proof containers. These will be disposed off whenever a safe method of their disposal is found out in future.
Related Articles
- Is Nuclear Energy a Renewable Resource? (brighthub.com)
- What is the problem with disposing of radioactive wastes is that they have a long what (wiki.answers.com)
The World’s First Robot with Conscience
Spain has designed the world’s first robot with its own “CONSCIENCE” and Life, which will “entertain, teach and be a companion” to humans who purchase it.
The AlSoy 1, which went on the sale in August, is the first social android developed by spanish firm AlSoy Robotics, which is Now bringing its creation out of the laboratory. “IT ALMOST SEEMS LIKE SCIENCE FICTION, BUT IT’S A REALITY”, said Diego Garcia, one of the FATHERS of the robot and head of ALSOY’s product engineering and development division.
At 25cm in height and weighing 1.5kg, AlSoy 1 was conceived to entertain and provide company to the user, but its main objective is “To Live, just like any other being that SENSES, has emotions and makes decisions.”
