AIEEE 2012 Result

All India Engineering Entrance Examination is the gateway for admission into 1st semester of first year's professional degree courses i.e. Engineering, Pharmacy and Architecture (B.E, B.Tech, B.Arch, B.Pharm, B.Des Etc) offered through various AIEEE Colleges across India. Student who successfully completes 12 year of school education in Science discipline from any school board (i.e. CBSE/State Board Etc) are eligible to write AIEEE 2012 Entrance Examination. The minimum age to appear in AIEEE 2012 Entrance Examination is 17 years.

AIEEE 2012 shall be an Online Test as well as Paper Pencil Based Test. AIEEE 2012 Online Test shall be held for 1 lakh candidates only, according to CBSE AIEEE 2011 notification. Candidates willing to appear for AIEEE 2012 online test must need to submit their Application Form online. However, it is said in AIEEE 2011 official notification that depending on the success of AIEEE 2011 Online Test, the AIEEE Board will offer Online Test for more number of aspirants for AIEEE 2012 and beyond. The AIEEE 2012 Online Test shall be available in AIEEE 2012 Paper I only.

The administering authority for AIEEE 2012 is AIEEE Board of Central Board of Secondary Education (CBSE), New Delhi. Student who appears in All India Engineering Entrance Examination (AIEEE) 2012 and finds place in the merit list prepared by AIEEE 2012 Board are called for counseling for final offer of admission. During counseling students are provided with option to choose from range of study programs of interest.

AIEEE Result 2012:-

All India Engineering Entrance Examination (AIEEE) offline entrance Exam was conducted on 29-04-2012 and the online exam will be conducts on 07-05-2012 to 26-05-2012.

The AIEEE Result 2012 is likely to be announced on or before 15 June 2012 and after that the candidates score card will be dispatched from 21-06-2012 to 05-07-2012. The Results will be announced at All India Engineering Entrance Examination board official website http://aieee.nic.in

Candidates can also subscribe at our website and after that soon as the AIEEE result 2012 will be declare we will inform you quickly. Candidates can also check their AIEEE 2012 result at given below link soon as the result will be declared.

http://aieee.nic.in/aieee2012/aieee/welcome.html

IIT-JEE 2012 Exam Date :- Sunday, April 8, 2012

Welcome to IIT JEE 2012 Exam Section. Here you will find IIT JEE 2012 Exam Dates, Notification, Results, Paper Pattern, Preparation, Coaching Institutes, Centers, Classes, Centres in India,  Delhi, Mumbai, Chennai, Bangalore, Kolkata, Kota, Pune, Chandigarh.

Indian Institute of Technology (IIT) conducts Joint Entrance Examination (JEE) every year for the admission to its B-Tech, B..Arch and other courses offered at the IIT Mumbai, IIT Kanpur, IIT Delhi, IIT Chennai, IIT Kharakpur, IIT Guwahati, IIT Madras, IIT Roorkee, IIT Varanasi, IIT Ropar, IIT Patna, IIT Hyderabad, IIT Gandhinagar, IIT Bhubaneswar and ISM Dhanbad. There are also other reputed colleges like Rajiv Gandhi Institute of Petroleum Technology and Indian Maritime University where IIT JEE 2012 aspirants can get admission after clearing IITJEE.
IIT JEE Exam is considered to be one of the toughest exams to clear as only one aspirant out of forty five can clear it. Another advantage of clearing IIT JEE is that you need not sit for separate exams for bachelor’s in design, bachelor’s in architecture, dual degree, bachelor’s in technology, integrated master’s in science course and integrated master’s in technology.
Every year, 4-5 lakh aspirants appear for IIT JEE and this year it is expected that at least 6 lakh IIT JEE 2012 aspirants would appear for the exam. Out of so many aspirants, only thirteen thousand candidates get admission in IITs, ISM and IT BHU. Candidates who appear for IIT JEE should be less than 25 years of age. However, the age limit is relaxed for ST/SC and PD up to 30 years of age.

Indian Institutes of Technology (IIT), Guwahati

Announces

IIT JEE 2012

For admission to undergraduate courses in IITs located in Bhubaneswar, Chennai, Delhi, Gandhinagar, Guwahati, Hyderabad, Indore, Jodhpur, Kanpur, Kharagpur, Mandi, Mumbai, Patna, Ropar and Roorkee.

IIT JEE 2012 Eligibility:-

* The candidate must have passed their 10+2 examinations from a recognized board.
* The candidates who will be giving their final examinations of 10+2 in 2012 are also eligible to apply.

IIT-JEE 2012 examination day:- Sunday, April 8, 2012
IIT JEE 2012 Paper Pattern:-

The examination will be held on Sunday, April 8, 2012 as per the schedule given below:-

Paper 1     9:00 to 12:00 hrs. (IST)
Paper 2     14:00 to 17:00 hrs. (IST)

The schedule will remain unaltered even if the above date is declared a public holiday

Type of Examination:-

• There will be two question papers, each of three hours duration. Both the question papers will consist of three separate sections on Chemistry, Physics and Mathematics. They will be of objective type, designed to test comprehension, reasoning and analytical ability of candidates.
• The answers for each of the questions are to be recorded on a separate, specially designed, machine-gradable sheet of paper (ORS - Optical Response Sheet). While answering each of the questions the candidate is expected to darken the bubble(s) against correct answer(s) using hard black (HB) pencils only. In some sections, incorrect answers may be awarded negative marks.
  

IIT JEE 2012 Results:-Declaration of Results:- Friday, May 18, 2012.

Aryans Mega Job Fest is to be organized on 9th February, 2012.

Camless Engines

Cams, lifters, pushrods... all these things have up until now been associated with the internal combustion engine. But the end is near or these lovely shiny metal objects that comprise the valve train hardware in your pride and joy (Owners of the technically far more advanced rotary are excluded!) Camless engine technology is soon to be a reality for mass-produced vehicles. In the camless valvetrain, the valve motion is controlled directly by a valve actuator - there's no camshaft or connecting mechanisms. Various studies have shown that a camless valve train can eliminate many otherwise necessary engine design trade-offs.

Automotive engines equipped with camless valvetrains of the electro-hydraulic and electro-mechanical type have been studied for over twenty years, but production vehicles with such engines are still not available. The issues that have had to be addressed in the actuator design include:

• reliable valve performance
• cost
• packaging
• power consumption
• noise and vibration

Noise has been identified as the main problem with the electromechanical actuator technology, arising from high contact velocities of the actuator's moving parts. For this noise to be reduced, a so-called soft-landing of the valves has to be achieved. In a conventional valvetrain, the soft-landing is mechanically embedded into the shape of the camshaft lobe.

One Electromechanical Valve Train (EMVT), developed by Siemens Automotive Systems has already been demonstrated at full load in a 16-valve four-cylinder engine. Jacobs Vehicle Equipment Co is another company involved in this field of research, but in diesel truck engines. Their direction is towards the Electrohydraulic Valve Actuation Technology (EHVT). International Truck and Engine Corp is another engine manufacturer poised to take a huge step forward in diesel engine design, announcing that it will eliminate camshafts from its diesel engines and replace them with electronic-valve timing systems by the year 2007. The long 6-year delay by International is due to testing. Where mechanical systems can be put on a dyno and tested for a couple of thousand hours, electronic testing must be done in such places as Alaska and Death Valley, where equipment can be subjected to temperature extremes. Engineers say they need two summers and two winters of testing to be satisfied they've got all the bugs out.

Source: Google/autospeed.com

Smart Antenna

A smart antenna consists of several antenna elements, whose signal are processed adaptively in order to exploit the spatial domain of the mobile radio channel . Usually the signals received at the different antenna elements are multiplied with complex weights W and then summed up the weights are chosen adaptively not the antenna itself, but the whole antenna system including the signal processing is called "adaptive".

Types of Smart Antenna Systems:

Terms commonly heard today that embrace various aspects of a smart antenna system technology include intelligent antennas, phased array, SDMA, spatial processing, digital beam forming, adaptive antenna systems, and others. Smart antenna systems are customarily categorized, however, as either switched beam or adaptive array systems.The following are distinctions between the two major categories of smart antennas regarding the choices in transmit strategy:

• Switched beam- a finite number of fixed, predefined patterns or combining strategies (sectors).

• Adaptive array - an infinite number of patterns

(scenario-based ) that are adjusting in real time.

The smart antenna system estimates the direction of arrival of the signal, using techniques such as MUSIC (Multiple Signal Classification), estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithms, Matrix Pencil method or one of their derivatives. They involve finding a spatial spectrum of the antenna/sensor array, and calculating the DOA from the peaks of this spectrum. These calculations are computationally intensive.

Matrix Pencil is very efficient in case of real time systems, and under the correlated sources.

Source: google/seminar.com

Solar Cars

The first solar car invented was a tiny 15-inch vehicle created by William G. Cobb of General Motors. Called the Sun mobile, Cobb showcased the first solar car at the Chicago Powerama convention on August 31, 1955. The solar car was made up 12 selenium photovoltaic cells and a small Pooley electric motor turning a pulley which in turn rotated the rear wheel shaft. The first solar car in history was obviously too small to drive . Now let's jump to 1962 when the first solar car that a person could drive was demonstrated to the public. The International Rectifier Company converted a vintage model 1912 Baker electric car (pictured above) to run on photovoltaic energy in 1958, but they didn't show it until 4 years later. Around 10,640 individual solar cells were mounted to the rooftop of the Baker to help propel it.

In 1977, Alabama University professor Ed Passereni built the Bluebird solar car, which was a prototype full scale vehicle. The Bluebird was supposed to move from power created by the photovoltaic cells only without the use of a battery. The Bluebird was exhibited in the Knoxville, TN 1982 World's Fair.Between 1977 and 1980 (the exact dates are not known for sure), at Tokyo Denki University, professor Masaharu Fujita first created a solar bicycle, then a 4-wheel solar car. The car was actually two solar bicycles put together. In 1979 Englishman Alain Freeman invented a solar car (pictured right). He road registered the same vehicle in 1980. The Freeman solar car was a 3-wheeler with a solar panel on the roof.

Energy Flow For A Solar Car

The energy from the sun strikes the earth throughout the entire day . However, the amount of energy changes due to the time of day, weather conditions, and geographic location. The amount of available solar energy is known as the solar isolation and is most commonly measured in watts per meter squared or W / m 2. In India on a bright sunny day in the early afternoon the solar isolation will be roughly around 1000 W / m 2, but in the mornings, evenings, or when the skies are overcast, the solar isolation will fall towards 0 W / m 2. It must understand how the available isolation changes in order to capture as much of the available energy as possible.

The sunlight hits the cells of the solar array, which produces an electrical current. The energy (current) can travel to the batteries for storage; go directly to the motor controller, or a combination of both. The energy sent to the controller is used to power the motor that turns the wheel and makes the car moves.

Generally if the car is in motion, the converted sun light is delivered directly to the motor controller, but there are times when there is more energy coming from the may than the motor controller needs. When this happens, the extra energy gets stored in the batteries for later use.

When the solar may can't produce enough energy to drive the motor at the desired speed, the array's energy is supplemented with stored energy from the batteries.

Of course, when the car is not in motion, all the energy from the solar may is stored in the batteries. There is also a way to get back some of the energy used to propel the car. When the car is being slowed down, instead of using the normal mechanical brakes, the motor is turned into a generator and energy flows backwards through the motor controller and into the batteries for storage. This is known as regenerative braking. The amount of energy returned to the batteries is small, but every bit helps.

Application

•  This concept can be utilized to build a single sitter four wheel vehicles in practice.

•  It can be extended to more commercial form of four wheeler vehicle.

•  In industry where small vehicles are used to perform light weight conveys work from one place to other place.

It can be used places where, fuel based vehicles are banned due to production of pollution and noise.

Source  from http://www.seminarsonly.com

COCOA

Cocoa is one of Apple native object-oriented application program environments for the Mac OS X operating system. It is one of five major APIs available for Mac OS X; the others are Carbon, POSIX (for the BSD environment), X11 and Java.

Cocoa applications are typically developed using the development tools provided by Apple, specifically Xcode (formerly Project Builder) and Interface Builder, using the Objective-C language. However, the Cocoa-programming environment can be accessed using other tools, such as Object Pascal, Python, Perl and Ruby, with the aid of bridging mechanisms such as PasCocoa, PyObjC, CamelBones and RubyCocoa, respectively. Also, under development by Apple, is an implementation of the Ruby language, called MacRuby, which does away with the requirement for a bridging mechanism. It is also possible to write Objective-C Cocoa programs in a simple text editor and build it manually with GCC or GNUstep’s make file scripts. For end-users, Cocoa applications are considered to be those written using the Cocoa-programming environment. Such applications usually have a distinctive feel, since the Cocoa-programming environment automates many aspects of an application to comply with Apple’s human interface guidelines.

Technology Overview

Cocoa helps you create commercial-grade applications quickly and efficiently. It is an advanced, mature object- oriented development environment that enables you to create complex software with surprisingly few lines of code. Through a seamless integration of tools and Cocoa API, the design and construction of a user interface is largely a matter of dragging windows, buttons, and other objects from palettes, initializing their attributes, and connecting them to other objects. Cocoa also defines a model for applications and implements most aspects of application behavior; you simply fit into this model the code that makes your application unique.

The programmatic interfaces of the core Cocoa frameworks, Foundation and Application Kit, simplify access to most of the technologies on which Mac OS X is based, such as Quartz, Bonjour networking, Core Text, and the printing system. Although these interfaces are in Objective-C, you can integrate code written in other languages into your Cocoa projects, including C++ code and C code. Because Objective-C is a superset of ANSI C, frameworks with C APIs are compatible with Objective-C.

Implementations

The Cocoa frameworks are written in Objective-C, and hence Objective-C is the preferred language for development of Cocoa applications. Java bindings for the Cocoa frameworks (known as the “Java bridge”) are also available but have not proven popular amongst Cocoa developers. Further, the need for runtime binding means many of Cocoa’s key features are not available with Java. In 2005, Apple announced that the Java bridge was to be deprecated, meaning that features added to Cocoa in Mac OS X versions later than 10.4 would not be added to the Cocoa-Java programming interface. AppleScript Studio, part of Apple’s Xcode Tools makes it possible to write (less complex) Cocoa applications using AppleScript. Third party bindings available for other languages include PyObjC (Python), RubyCocoa (Ruby), CamelBones (Perl), Cocoa#, Monobjc (C#) and NObjective(C#).There are also open source implementations of major parts of the Cocoa framework that allows cross- platform (including Microsoft Windows) Cocoa application development, such as GNUstep, and Coco tron.

Wireless Networks

Wireless network refers to any type of  computer network that is not connected by cables of any kind. It is a method by which homes, telecommunication networks and enterprise (business) installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. wireless telecommunications networks are generally implemented and administered using a transmission system called radio waves. This implementation takes place at the physical level (layer) of the network structure.

The wireless communication revolution is bringing fundamental changes to data networking, telecommunication, and is making integrated networks a reality. By freeing the user from the cord, personal communications networks, wireless LAN's, mobile radio networks and cellular systems, harbor the promise of fully distributed mobile computing and communications, any time, anywhere.

Focusing on the networking and user aspects of the field, Wireless Networks provides a global forum for archival value contributions documenting these fast growing areas of interest. The journal publishes refereed articles dealing with research, experience and management issues of wireless networks. Its aim is to allow the reader to benefit from experience, problems and solutions described.

Space Robotics

Robot is a system with a mechanical body, using computer as its brain. Integrating the sensors and actuators built into the mechanical body, the motions are realised with the computer software to execute the desired task. Robots are more flexible in terms of ability to perform new tasks or to carry out complex sequence of motion than other categories of automated manufacturing equipment. Today there is lot of interest in this field and a separate branch of technology 'robotics' has emerged. It is concerned with all problems of robot design, development and applications. The technology to substitute or subsidise the manned activities in space is called space robotics. Various applications of space robots are the inspection of a defective satellite, its repair, or the construction of a space station and supply goods to this station and its retrieval etc. With the over lap of knowledge of kinematics, dynamics and control and progress in fundamental technologies it is about to become possible to design and develop the advanced robotics systems. And this will throw open the doors to explore and experience the universe and bring countless changes for the better in the ways we live.

Areas Of Application

The space robot applications can be classified into the following four categories
1 In-orbit positioning and assembly: For deployment of satellite and for assembly of modules to satellite/space station.
2 Operation: For conducting experiments in space lab.
3 Maintenance: For removal and replacement of faulty modules/packages.
4 Resupply: For supply of equipment, materials for experimentation in space lab and for the resupply of fuel.

The following examples give specific applications under the above categories

Scientific experimentation:

Conduct experimentation in space labs that may include
" Metallurgical experiments which may be hazardous.
" Astronomical observations.
" Biological experiments.

Assist crew in space station assembly

" Assist in deployment and assembly out side the station.
" Assist crew inside the space station: Routine crew functions inside the space station and maintaining life support system.

Space servicing functions

" Refueling.
" Replacement of faulty modules.
" Assist jammed mechanism say a solar panel, antenna etc.

Space craft enhancements

" Replace payloads by an upgraded module.
" Attach extra modules in space.
Space tug
" Grab a satellite and effect orbital transfer.
" Efficient transfer of satellites from low earth orbit to geostationary orbit.

Mobile computing

Mobile voice communication is widely established throughout the world and has had a very rapid increase in the number of subscribers to the various cellular networks over the last few years. An extension of this technology is A technology that allows transmission of data, via a computer, without having to be connected to a fixed physical link.

the ability to send and receive data across these cellular networks. This is the principle of mobile computing.

Mobile data communication has become a very important and rapidly evolving technology as it allows users to transmit data from remote locations to other remote or fixed locations. This proves to be the solution to the biggest problem of business people on the move - mobility.

Mobile data communication

Wireless data connections used in mobile computing take three general forms. Cellular data service uses technologies such as GSM, CDMA or GPRS, and more recently 3G networks such as W-CDMA, EDGE or CDMA2000. These networks are usually available within range of commercial cell towers. Wi-Fi connections offer higher performance, may be either on a private business network or accessed through public hotspots, and have a typical range of 100 feet indoors and up to 1000 feet outdoors. Satellite Internet access covers areas where cellular and Wi-Fi are not available and may be set up anywhere the user has a line of sight to the satellite's location, which for satellites in geostationary orbit means having an unobstructed view of the southern sky. Some enterprise deployments combine networks from multiple cellular networks or use a mix of cellular, Wi-Fi and satellite. When using a mix of networks, a mobile virtual private network (mobile VPN) not only handles the security concerns, but also performs the multiple network logins automatically and keeps the application connections alive to prevent crashes or data loss during network transitions or coverage loss.