|
| Title |
Year |
Vol. |
No. |
Size |
| Data_Grabber_Circuit |
2009 |
2 |
1 |
303 KB |
Abstract- This paper presents the aim and development of the Data Grabber Circuit which I had designed during my research internship in the Raja Ramanna Centre for advanced technology, Department of nuclear Energy, Govt. of India. The aim of the circuit was to continuously capture data from serial communication over RS 485 Master-Slave Link. As data transmission in serial communication is done at 750kbaud/sec it cannot be directly connected to a computer because of the incompatibility in baud rate. Hence I made a circuitry using a microcontroller that would synchronize incoming serial burst data with the computer processing by buffering the incoming data, converting the serial data into parallel one and transmitting the same using parallel port interfacing to the computer. The incoming serial data is stored in a 32K RAM and the PC reads this data from the RAM using its parallel port. The process of reading the data from the RAM involves a sequence of handshaking signals between the PC and microcontroller to ensure that there is no data loss on the part of the data reception from the PC. Also the data is transmitted from the microcontroller to the parallel port via a latch to ensure the same. Further the process of reading and writing data in the RAM follows the circular queue algorithm so that optimum usage of the RAM is done and conditions of overflow and underflow can be easily detected. This circuit is made for storing bursts of incoming data and not to be used for continuous flow of data due to chances of an overflow. The circuit makes use of Dallas's DS89C420 microcontroller (which follows 8051 assembly code). Also the circuit is compatible with an RS232 link. The assembly code is made using the basic 8051 assembly language. The interfacing code has been designed in both TurboC and Visual C++ environment. ....
[Read details]
|
Submitted by :
MOIZ HUSAIN HAIDRY
|
| Movement Impairment Syndrome of Lumbar Spine and Its Treatment |
2009 |
2 |
1 |
303 KB |
Abstract:Low Back Pain affects almost 80%of the population once or more in their lifetime. Most of the people have recurrent attacks of low back pain. In 2007, Americans spent a whopping $50billion on the treatment related to back pain. Back pain has led to decreased productivity. Numerous protocols exist regarding the treatment of low back pain. One of the latest concepts which has gained popularity across the globe is treating the low back pain on the concepts of Movement Impairment Syndrome of lumbar spine. Shirley S Sheurmann has done pioneering work in this field. This study involves treating patients of low back pain(who got no relief from various treatments)on the concept of movement impairment syndrome and recording their progress. ....
[Read details]
|
Submitted by :
Ashish Mathur,
MSPT; Harshvardhan, B.P.T. (Gold Medalist)
College: M.G.M. Medical College, Indore
University: Devi Ahilya VishwaVidyalaya
|
Go to Top
| Convolution encoding and its implementation on Altera VHDL' |
2009 |
2 |
1 |
3268 KB |
Abstract- Remote Sensing Satellites like IRS-1A, IRS-1B, IRS-1C, IRS-1D, IRS-P3, IRS-P4 which send the data continuously covering whole globe in some specified times. In remote sensing satellites where data is less and error correction is higher preferred, we use a convolution encoder. The standard convolution encoder is of bit rate ½ and constrains length 7, as usage of block code is not flexible where data is of variable length. This technique is useful in future launching satellites. The received signal at the earth is down converted to intermediate frequency 375MHz and fed to a demodulator. The data acquired from the satellite is in serial form. This serial data will to be fed to front-end hardware, which will feed this data to a computing device. The steps involved in simulating a communication channel using convolution encoding and viterbi decoding includes a convolution encoder to be implemented. In this project the conventional Convolution encoder of Bit Rate =1/2 and Constrain length K=3 and K=7 and a Convolution encoder for rate=1/3 and constrain length K=3 and K=7 is programmed and implemented. In addition Convolution encoder for achieving the rate=2/3 the encoder with constrain length K=3 of the feed forward type (3,2,3) is programmed and implemented. This is an encoder which takes two input bits for the generation of every three output bits, which can be furthermore realized as (3,2,2) systematic convolution encoder in Observer Canonical form. The same is also designed in non-systematic recursive convolution code (NSRCC). Several other programs are also designed needed for feeding data to front-end, generating bit pattern etc....
[Read details]
|
Submitted by :
-Nikhil Mohan Aggarwal
|
| A comparative study testing the efficacy of iontophoresis and phonophoresis in plantar fasciitis patients |
2009 |
2 |
1 |
3268 KB |
Abstract:Plantar Fascitis is an overuse condition of the plantar fascia at its attachment to the calcaneus. It commonly results from the activities that require maximal plantarflexion of the ankle and simultaneous dorsiflexion of the metatarsophalantgeal joints(running, dancing). The patient reports pain in the heel, which is worse in the morning and improves during the day. There may be a history of other leg and foot problems in patients with abnormal biomechanics.There is point tenderness at the medial process of the calcaneal tuberosity that may extend some centimeters along the medial border of plantar fascia. Stretching the plantar fascia may reproduce pain.....
[Read details]
|
Submitted by :
Harshvardhan, B.P.T. (Gold Medalist)
College: M.G.M. Medical College, Indore
University: Devi Ahilya VishwaVidyalaya
|
| DUAL FUEL ENGINES |
2009 |
2 |
1 |
3268 KB |
ABSTRACT: Stricter controls on emissions, especially in sea trades, urge the use of cleaner fuels. Natural gas is an attractive candidate for more environment-friendly shipping. Environmental policies and availability of boil off gasses on gas carriers have led to the development of DF engines. LNG burns in a very lean mixture giving high energy efficiency and low NOX emissions over the load range from an optimized engine. SOX emissions are virtually negligible with minimal particle emissions. Low pressure gas is fed to each cylinder via admission valve upstream of the intake air valves in the cylinder head. This facilitates control of air-fuel ratio and combustion in each cylinder individually. The lean gas or air mixture is then ignited by directly injecting marine diesel oil. Improvements in Mean Effective Pressures and comparable efficiencies have also been achieved by further progress and development in the field. However certain negative aspects need to be addressed. Requirement for greater onboard space for bulky pressure storage tanks being one of the issues. Tighter sulphur caps and global concern on use of residual fuels promotes the demand of LNG fuel propulsion. Around 400 engines are in service in numerous countries burning natural gas and other fuels such as gas derived from landfill sites and fermentation of effluents.
[Read details...]
|
Submitted by :
Abhishek Mamgain
Tolani Maritime Institute ( Center of BITS PILANI for Marine Engineering)
Pune: 411507.
|
| STEGANOGRAPHY |
2009 |
2 |
1 |
3268 KB |
ABSTRACT:Steganography is the art of hiding information in ways that prevent the detection of hidden messages. Steganography, derived from Greek, literally means “covered writing.” It includes a vast array of secret communications methods that conceal the message’s very existence. These methods include invisible inks, microdots, character arrangement, digital signatures, covert channels, and spread spectrum communications. Steganography and cryptography are cousins in the spy craft family. Cryptography scrambles a message so it cannot be understood. Steganography hides the messages it cannot be seen. A message in cipher text, for instance, might arouse suspicion on the part of the recipient while an “invisible” message created with steganographic methods will not.
[Read details....]
|
Submitted by :
Priyanka Vergadia
ELECTRONICS & TELECOMM.
S.G.S.I.T.S. INDORE
Go to Top |
|
