Mechanica 2011 - IIT Madras

April 9,10 (Mechanical)

Mechanica 2011, an annual technical festival of the Mechanical Engineering Department of IIT Madras, Chennai. At Mechanica, we present to you unparallel oppoirtunities to test your skills.

National Symposium on Rotor Dynamics - IIT Madras

December 19,20,21

Most machines have one or more rotating parts. Rotating machine elements thus form the backbone of industrial infrastructure and therefore play a pivotal role in the growth and development of the country. Rotor Dynamics is the key in design and maintenance of all such rotating machinery. This area has made tremendous strides in recent years.

ObCom 2011 - VIT

September 9

This International Conference is a major event to be conducted following the grand success of series of ObCom conferences during 2003, 2004 and 2006, which were audited by a good number of participants from Academia and Industry across the World. The past ObCom conferences received good contributions from academia, industry and research organizations. Our sponsors included governmental and non-governmental agencies like DRDO, ISTE, DIT, CSIR etc.

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Technical Papers and Symposium Details

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Posted by tpapers On 12:58 AM 3 comments
An artificial neural network ensemble is a learning paradigm where several artificial neural networks are jointly used to solve a problem. In this paper, an automatic pathological diagnosis procedure named Neural Ensemble-based Detection (NED) is proposed, which utilizes an artificial neural network ensemble to identify lung cancer cells. The neural algorithm we used is FANNC, which is a fast adaptive neural classifier that performs one-pass incremental learning with fast speed and high accuracy.  The fundamental operation of the artificial neural network is local two-dimensional convolution rather than full connection with weighted multiplication. Weighting coefficients of the convolution kernels are formed by the artificial neural network through back propagated training.  The artificial convolution neural network acted as a final classifier to determine whether the suspected image block contains a lung nodule.


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Techniques in a plant tissue culture, genetic engineering are important for production of new cultivars in the field of Agricultural Biotechnology. Egg plant (Solanum melongene L.) is an agronomically important non- tuberous Solanaceous crop growing for its nutrients vegetables. In popular medicine, egg plant is indicated for the treatment of several diseases, including diabetics, arthritis, asthma and bronchitis. The Brinjal is susceptible of a number of diseases and pests capable of causing serious crop losses. The problem has been overcome by the hybridization eggplant with wild resistant solanum species, which contains a wide genetic diversity and are source of useful agroclimatic traits. Egg plant tissue contains a high morphogenetic potential, that is useful for developmental studies a well as for establishing biotechnological approaches to produce improved varieties, such as embryo rescue, in vitro selection, somatic hybridization and genetic transformation. In the present  study a suitable protocol for the in vitro seed germination and field transfer of  Egg plant  (Solanum melongene L.) are standardized using  Ms media supplemented with BAP and  NAA. The germinated seedlings were successfully transferred to the field for planting. The plant which grown in this technique provide good yield.

K. Nithya S.Ramya Under the guidance of Dr. J. Philip Robinson Ph.D
Department of Biotechnology
K.S. Rangasamy College of Technology
Tiruchengode- 637 215

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This paper reviews the expected wide and profound impact of nanotechnology of future wireless devices and communication technologies. The requirements for this development are the mobile phone and the core requirements for this kind of intelligence are autonomous and robust. This paper explains how the nanotechnology provide solutions for sensing, actuation, radio, embedding intelligence into the environment, power efficient computing, memory, energy sources, human-machine interaction, materials, mechanics, manufacturing, and environmental issues. The sensing is the part at which the usage of the sensors is been explained. As the wireless technologies expect for high speed and less energy consumption they move on to the nanotechnology. By this the speed can be increased and also as the mobile phones are been used the memory space will be highly significant and there will be a better human-machine intractions.
By:Thamim Ansar K.,Venkatesh D ., Shanmuga Sundhar S., Sathish Kumar K.
     (Final Year E.C.E Department)
      Bhajarang Engineering College

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The fractional frequency transmission system FFTS is a very promising long -distance transmission approach, which uses lower frequency (50/3) to reduce the electrical length of the AC power line, and thus its transmission capacity can be increased several fold .   This paper introduces the primary experiments results of FFTS. 
The experiment uses the phase-controlled cycloconverter as the frequency changer, stepping up 50/3Hz electricity to 50Hz   electricity and supplying it to the utility grid. Thus, a new flexible ac transmission system device is successfully established   in this experiment. The synchronizing process of 50/3Hz transmission   system   with 50Hz utility system is introduced   in this paper. The experiment results   show that a 1200km/500kv transmission   line can transmit more than 2000MW electric power when employing the FFTS. The experiment also illustrates   that there is no essential difficulty   to realize FFTS in engineering practice.

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Posted by tpapers On 6:38 PM 1 comments

Electricity plays a vital role in our day to day life and also there is a great demand for electricity today. Transmission losses are also one of the reasons for this demand. Since transmission is a main part of the power system it should be more efficient. During transmission there is a loss of 30%.To eliminate these losses we need a new technique which is called recent trend. The recent trend for efficient transmission of power is the “wireless power transmission system”. This paper exposes a new method for wireless power transmission using EM waves that comprises a transmitter and receiver in which we get a transmission efficiency of 95%. The receiver does not require an independent power source and it is comprised of an optical feedback to the transmitter and does not require a separate communication channel to the transmitter. The transmitter uses the optical feedback to locate and track the receiver. The transmitter can optionally employ a macro adjusters and micro adjusters that direct the beam onto the receiver for optimal power transmission. The system also optionally has a tight loop beam detector to enhance the safety of the system. Either the receiver or transmitter may also encode data on the energy transmission, resulting in one-way or two-way data transmission.

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Micro Electro Mechanical Systems(MEMS)

Posted by tpapers On 9:20 PM 1 comments

Micro-Electro-Mechanical Systems (MEMS) is the integration of mechanical elements, sensors, actuators, and electronics on a common silicon substrate through microfabrication technology. While the electronics are fabricated using integrated circuit (IC) process sequences (e.g., CMOS, Bipolar, or BICMOS processes), the micromechanical components are fabricated using compatible "micromachining" processes that selectively etch away parts of the silicon wafer or add new structural layers to form the mechanical and electromechanical devices.
MEMS promises to revolutionize nearly every product category by bringing together silicon-based microelectronics with micromachining technology, making possible the realization of complete systems-on-a-chip. MEMS is an enabling technology allowing the development of smart products, augmenting the computational ability of microelectronics with the perception and control capabilities of microsensors and microactuators and expanding the space of possible designs and applications.


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Wearable Bio Sensors

Posted by tpapers On 9:18 PM 1 comments

Wearable sensors and systems have evolved to the point that they can be considered ready for clinical application. The use of wearable monitoring devices that allow continuous or intermittent monitoring of physiological signals is critical for the advancement of both the diagnosis as well as treatment of diseases.   Wearable systems are totally non-obtrusive devices that allow physicians to overcome the limitations of ambulatory technology and provide a response to the need for monitoring individuals over weeks or months. They typically rely on wireless miniature sensors enclosed in patches or bandages or in items that can be worn, such as ring or shirt. The data sets recorded using these systems are then processed to detect events predictive of possible worsening of the patient’s clinical situations or they are explored to access the impact of clinical interventions.  


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Robotic surgery

Posted by tpapers On 9:16 PM 1 comments

Robot-assisted surgery is the latest development in the larger movement of endoscopy, a type of minimally invasive surgery--the idea being that less invasive procedures translate into less trauma and pain for patients. Surgery through smaller incisions typically results in less scarring and faster recovery. It's not that robots are changing the basics of surgery. Surgeons are still cutting and sewing like they have been for decades. Robots represent a new computer-assisted tool that provides another way for surgeons to work.
Rather than cutting patients open, endoscopy allows surgeons to operate through small incisions by using an endoscope. This fiber optic instrument has a small video camera that gives doctors a magnified internal view of a surgical site on a television screen.
In abdominal endoscopy, known as laparoscopy, surgeons thread the fiber optic instrument into the abdomen. First performed in the late 1980s, laparoscopy is now routine for many procedures, such as surgery on the gallbladder and on female organs.
With robotic surgical systems, surgeons don't move endoscopic instruments directly with their hands. Instead, surgeons sit at a console several feet from the operating table and use joysticks similar to those used in video games. They perform surgical tasks by guiding the movement of the robotic arms in a process known as tele-manipulation.


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Artificial Eye

Posted by tpapers On 9:13 PM 20 comments

The retina is a thin layer of neural tissue that lines the back wall inside the eye. Some of these cells act to receive light, while others interpret the information and send messages to the brain through the optic nerve. This is part of the process that enables us to see. In damaged or dysfunctional retina, the photoreceptors stop working, causing blindness. By some estimates, there are more than 10 million people worldwide affected by retinal diseases that lead to loss of vision.
The absence of effective therapeutic remedies for retinitis pigmentosa (RP) and age-related macular degeneration (AMD) has motivated the development of experimental strategies to restore some degree of visual function to affected patients. Because the remaining retinal layers are anatomically spared, several approaches have been designed to artificially activate this residual retina and thereby the visual system.
At present, two general strategies have been pursued. The “Epiretinal” approach involves a semiconductor-based device placed above the retina, close to or in contact with the nerve fiber layer retinal ganglion cells. The information in this approach must be captured by a camera system before transmitting data and energy to the implant. The “Sub retinal” approach involves the electrical stimulation of the inner retina from the sub retinal space by implantation of a semiconductor-based micro photodiode array (MPA) into this location. The concept of the sub retinal approach is that electrical charge generated by the MPA in response to a light stimulus may be used to artificially alter the membrane potential of neurons in the remaining retinal layers in a manner to produce formed images.


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GPS Technology

Posted by tpapers On 9:08 PM 1 comments

Throughout time people have developed a variety of ways to figure out their position on earth and to navigate from one place to another. Early mariners relied on angular measurements to celestial bodies like sun and stars to calculate their location. The 1920s witnessed the introduction of more advanced technique-radio navigation-based at first on radios that allowed navigators to locate the direction of shore-based transmitters when in range. Later development of artificial satellites made possible the transmission of more precise, line of sight radio navigation signals and sparked a new era in navigation technology. Satellites are first used in position finding in a simple but reliable 2D Navy system called Transit. This laid the groundwork for a system that would later revolutionize navigation for ever-the Global Positioning System
The Global Positioning System (GPS) is a satellite based navigation system. The concept of GPS was introduced by the United States Department of Defense (DoD). It is in the year 1994 that the GPS was completely developed. The GPS is developed to provide continuous, highly precise positions, velocity and time information to the land, sea, air and space based users. The intent of system is to use a combination of ground stations, orbiting satellites and special receivers to provide navigation capabilities to virtually everyone, at any time, anywhere in the world, regardless of weather conditions.


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