Vol 1 (4) July-August 2013
1. POWER REDUCTION IN MODERN VLSI CIRCUITS – A REVIEW
Debopam Ghosh, Jyotirmoy Guha, Arka De, Anirban Mukherjee
Abstract: This paper focuses on the importance of reducing power consumption by VLSI circuits using different power reduction techniques. In this paper, various sources of power dissipation in modern VLSI circuits along with various power reduction techniques as adopted in industry today are discussed.
2. EVALUATION OF EFFICACY OF BACTERIAL CONSORTIUM B3RVY 3 FOR REMOVAL OF TOXICITY FROM DIFFERENT TEXTILE DYES
Hemangi Patel and Darshan Marjadi
Abstract: Toxic effluents containing synthetic dyes are discharged from various industries and they adversely affect water resources, soil fertility, aquatic organisms and ecosystem integrity. In this study, a novel bacterial consortium isolated from dye contaminated soil sample was shown to effectively decolorize Reactive Violet 5 and Golden Yellow HER within 22 hrs. under static condition at a maximum dye concentration of 400 mg/L and was named as B3RVY 3. Biochemical analysis and 16S rRNA sequencing was done for identification of the bacterial isolates responsible for degradation of the dyes. Dye decolorization was monitored using scanning Ultraviolet-Visible spectrophotometer which indicated that decolourization was due to the degradation of dyes into non-colored intermediates. The protein content estimation in raw dye and its degradation metabolites was performed and it was found that protein content increases with the increase in the concentration of the dye. Thus the stress is the main reason that shows the influence of protein content and responsible for degradation. Phytotoxicity study of both dyes on Vigna radiata and Triticum aestivum revealed the more toxic nature of raw dye and less toxic nature of its degradation metabolites. Microbial toxicity study on Escherichia coli and Staphylococcus aureus also showed the more toxic nature of raw dye and less toxic nature of its degradation metabolites.
Keywords: Synthetic dyes, Biodegradation, Bacterial consortium B3RVY 3, 16S rRNA sequencing, Phytotoxicity, Microbial toxicity
3. EFFECTIVENESS OF TEACHING BASED ON BRAIN RESEARCH WITH REFERENCE TO ACADEMIC ACHIEVEMENT OF SECONDARY SCHOOL STUDENTS
KarnicaVyas and K.C. Vashishtha
Abstract: Leslie Hart (1983) argues that teaching without an awareness of how the brain learns is like designing a glove with no sense of what a hand looks like. If classrooms are to be ‘places of learning’, than Brain ‘the organ of learning’ must be understood and accommodated. From this perspective the Brain will be increasingly relevant for thinking about educational practices. Owing to this, continuous efforts give rise to Brain based learning. It is nothing, but teaching based on brain research, which depends on the 12 core Brain/mind learning principles (Caine & Caine, 2002), derived by various neurological researches. The present study has employed Quasi Experimental design with comparison groups following pre-test/ post-test method. The main objective of the study was to apply Brain/mind learning principles in developing Brain targeted teaching Module in Biology for secondary school students and to test their effectiveness in classroom through experimental try out. Sample for this study will consists of 65 8th grade students from a CBSE affiliated school in Agra city. The school was selected purposively and the students are distributed in two comparable matched groups on their previous academic achievement. Further Mann Whitney U test, (Non Parametric Statistics) was used for analysing and interpreting the data. On the basis of the literature survey the result of the present study in Indian context is expected to be highly significant and beneficial for students as well as teachers, as this is a Neurological approach of learning catering effectively each dimensions of it, which suits most to the designing of human brain at work in classrooms.
Keywords: Brain based learning, Neurology, Brain-Mind Learning Principles
4. UTILIZATION OF E- WASTE AND PLASTIC BOTTLE WASTE IN CONCRETE
Ankit Arora and Dr. Urmil V. Dave
Abstract: E-waste from electrical and electronic equipment, that may be old or might have reached end of life and plastic waste from plastic mineral and cold drink bottles were collected and grinded to size of 2 mm using pulverizing machine. The grinded pieces were rubbed against each other with friction roller machine designed and fabricated by the authors. It is done to develop roughness and make grinded pieces shape irregular so that they can bond well with cement when mixed with it. A mix design was done for M20 grade of concrete by IS method. Ordinary Portland cement of 43 grade was selected. Grinded E-waste and plastic waste were replaced by 0%, 2%, and 4% of the fine aggregates. Compressive strength and flexural strength were tested and compared with control concrete. Experiments done shows increase in compressive strength by 5% and reduce cost of concrete production by 7% at optimum percentage of grinded waste. Grinded waste greater than 4.75mm in certain proportion act as a good filler material in concrete and on-going experiments are done to apply gap gradation by grinding the waste into specific sizes. This will ensure better packing density and hence good strength. Moreover decorative tiles were made with the grinded waste and white cement which give appealing look to the wall and are cheaper than the vitrified tiles.
5. BER ANALYSIS OF A MIMO BASED COGNITIVE RADIO SYSTEM IMPLEMENTING OSTBC AND TAS/MRC IN EQUICORRELATED RAYLEIGH FADING CHANNELS
Abstract: In this letter, we analyze the bit error rate (BER) performance of a multiple input multiple output (MIMO) based cognitive radio system in equicorrelated Rayleigh fading channels. The system is assumed to implement energy detection for spectrum sensing and fixed power control for secondary user transmission. We develop an alternate closed form expression of BER when the MIMO link between the secondary users is implemented using orthogonal space time block codes (OSTBC). We also propose a novel infinite series expression of BER when transmit antenna selection with maximal ratio combining (TAS/MRC) is used instead of OSTBC. We observe that the existing work on analyzing the BER of MIMO systems implementing TAS/MRC in correlated fading channels, implicitly or explicitly assumes correlation to be absent on the transmitter side. We overcome this shortcoming by considering correlation on both the transmitter and receiver sides of the MIMO system.
Keywords: Cognitive radio system, MIMO, OSTBC, TAS/MRC, fixed power control, energy detection, Rayleigh fading, equicorrelated.
6. A STUDY ON MECHANICAL PROPERTIES OF CEMENT CONCRETE BY PARTIAL REPLACEMENT OF FINE AGGREGATES WITH BOTTOM ASH
Sandhya B, Reshma E.K.
Abstract: Bottom Ash is a new waste material and abundantly available. It is a solid residue which falls into furnace bottom in modern large thermal power plants and constitutes about 20% of total ash content of the coal fed in the boilers. Direct use of this material with a large quantity, will provide a solution to dispose of this material, and the possibility as alternative materials in construction. The main objective of this research is to study the behavior of concrete mix which comprises of partial replacement of fine aggregates with bottom ash against plain concrete. The study was carried out using coal bottom ash as a partial replacement with fine aggregates in the concrete mix by 20%, 30%, 40%, and 50% by weight. The various strength properties studied consist of compressive strength, flexural strength and splitting tensile strength. The results shows that the compressive strength, split tensile strength and flexural strength decreased as the percentage of replacement of bottom ash increased as compared to plain concrete. It was observed that up to 20% replacement the results of compressive test, flexural test and split tensile test are approximately same as that of the controlled concrete.
Key Words: coal bottom ash, compressive test, flexural test, split tensile test.
7. A REVIEW ON THE MATERIALS USED FOR BEARING AND FAILURE BEHAVIOR
Seshagiri. R, Nishant Jonathan Rubens, Harihara Sakthi Sudhan P
Abstract: This paper highlights the metallic, polymeric and ceramic materials used to manufacture the bearings, the kind of failures experienced with those materials and their causes. The failure mechanism of bearings and influence of various elements on their properties are reviewed. It is identified from the study that the failure is mainly provoked by initiating the surface micro crack/flake and then subsequently propagating them to failure. Materials influencing wear resistance to control the material removal rate without much compromising the fracture toughness are discussed. The advanced composite materials used in bearings are also discussed. A review on nano composites is also done to turn out the research on bearing materials towards nano composites. The evolution of MMC, nano-composites is investigated to come to a conclusion on stimulating a research work to make a better material for bearings at room temperature and cryogenic temperature. A suitable polymer material is suggested for carrying out the research at cryogenic temperature for low temperature application of bearings.
Keywords: Alloys, polymers, composites, failure causes, research exposure, cryogenics
8. ZERO CONSUMPTION ZERO DISCHARGE TECHNO-GREEN EDIFICE 21ST GENERATION LIVING
Somshekhar Mohanty, Saurabh Chaskar
Abstract: This paper signifies the new efficient use of technology and design for natural ventilation and better indoor air quality (IAQ) by ground coupled heat exchanger, double facade ventilation buffer, venetian blind curtains and extensive usage of CO2 sensors. Waste disposal is an important element of consideration and is figured out by using trisorter recycling system. Adequate spacing of vehicular traffic and parking in apartments by hydraulic elevation using waste water and underground rooms is need of the future settlements. All this solutions integrated with automatic field control panel will achieve the goal for better living satisfying green protocol.
Keyword: illuminator, energy guzzlers, optofluid switch, trisorter, 3-D solar cells
9. PITOT-TUBE HEATING IN AIRCRAFTS BY SKIN EFFECT
Sneha Lakshmi R, Shruti Chandrasekhar, Shubhra Pande, Sanman Bhargava
Abstract: A pitot-tube is positioned mainly to function the Airspeed Indicator (ASI), Altimeter and the vertical speed indicator (VSI). Any difference in the Pitot tube causes a great change in these flight instruments. The idea of this project is to use skin effect to become distributed within a conductor and attached to the tube overall to maintain the temperature. Skin effect as we describe, is the tendency of an alternating current (AC) to become distributed within a conductor such that current density is largest near the surface of the conductor, and decrease with greater depths within the conductor. The heat produced in the outer heat tube, can be measured and regulated with a microprocessor based, controller. This regulates the temperature reducing the risk of Pitot-tube melting and thereby avoiding pitot-tube icing at higher altitudes. The main idea is to avoid air crashes due to the misreading created due the pitot tube icing. This also lowers the power consumption, increased heating element lifespan and does not endlessly waste electricity when not in icing conditions mainly with the help of the micro controller.
10. SURVIVAL OF THE FITTEST ‘ENTREPRENEURIAL’ B-SCHOOL
Prof. Dr. Siddhartha Ghosh
Abstract: Everyday out of the blue, the MBA factories are conceiving and developing new strategies for survival, growth and dominance. Undoubtedly, it’s an age-old fact that recession or no recession, the Indian job market has always been bullish. In the present fragile economy, it becomes more relevant for the management varsities to have the 'locus of control' on multiplication and not addition, viz. entrepreneurship in lieu of the conventional one-to-one student’s placements. Its high time now that the B-schools should take initiatives towards grooming wealth creators rather than creating job seekers. They need to stop bragging and competing about the average salaries their students are commanding and start to teach and encourage them about the values of wealth creation and entrepreneurship. They should start celebrating their alumni of entrepreneurs and make them involved in the process of grooming new entrepreneurs of their students.
Bhaveshkumar Jha, Gouri Desai, Keith D’Silva, Joyce Joseph
Abstract: In today’s society, robots have become an indispensible part of human life. With more than 12000 hospitals, curing the health of billion plus Indian population, the problem of medical wastage disposal is a growing concern. To overcome shortcomings/inconsistency of assistance in medication, problem of medical wastage disposal and humans getting affected, we have attempted to build our project "Robovantri , a medical robotic assistant, specially designed to aid the Indian hospital conditions. We aim for overcoming shortage of nursing staff, segregation, recycling, disposal of medical waste, a floor-wise robotic control system that can operate multiple controllable robots, for storing the patients' medical history and also to overcome nursing problems in unreachable rural areas. The robot uses signboards placed at various critical points in the hospital for deciding the best possible pathway to reach its destination. We are implementing this using image processing in MATLAB.
Keywords: CSSD; robotic assistant; Zigbee