International Journal of Advanced Research in

Science and Technology (IJARST)


Volume 4 - Issue 2 | 2015


01. Assessment of tourist’s arrivals and their relationship with rainfall: A case study of Tamil Nadu.

R.Vimala, B.Mahalingam* and P.Sujatha

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Highlights

The present study has been conducted to assess the tourism arrivals of Tamil Nadu and the relation of rainfall with the tourism arrivals. The study has been done based on the secondary data which have been collected from the concern department. The temporal variation of foreign and domestic tourist arrivals has been calculated using the statistical analysis. The result of temporal variation of tourists shows that, the trend of tourist arrivals into Tamil Nadu have positive growth and the relationship between rainfall and tourist indicate the positive correlation.

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02. Hygroscopicity and movement of medium density fibre board.

Mamatha B S*, Sujatha. D. and C.N. Pandey

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Dimensional stability of Medium Density Fiberboard (MDF) is a critical factor in usage of products. Many problems in the use of wood based products are caused by changes in moisture content due to hygroscopic nature of material. Hence a study on hygroscopicity and movement of commercially manufactured medium density fibre board was carried out. The hygroscopic behaviour was determined by measuring the Equilibrium Moisture Content (EMC) at two extreme conditions i.e., 96% to 35% relative humidity and the movement values were measured for 6mm and 17mm thickness samples. From this study it was observed that the Equilibrium moisture content (EMC) for MDF is lower and comparable with reference to hygroscopicity of Group C Indian timbers. The movement values for the medium density fibre boards exposed between 96%RH and 35% RH were found to be 0.28% in width, 4% in thickness.

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03. Implementation of bit serial CORDIC for Robotic Applications.

T. Chandrika* and D.P.Raju

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CORDIC stands for coordinate rotation digital computer. The key concept of CORDIC arithmetic is based on the simple and ancient principles of 2-D geometry. This iterative formulation of a computational algorithm for its implementation is developed for the computation of trigonometric functions and multiplication. Not only a wide variety of applications of CORDIC have been suggested over the time, but also a lot of progress has taken place in the area of algorithm design and development of architectures for high-performance and low-cost solutions . Rotation of vectors through fixed and known angles has wide applications in robotics, digital signal processing, graphics, games, and animation. Therefore, in this paper, we be present Bit Serial Iterative (BSI) CORDIC Implementation for The Calculation of Trigonometric Functions. Synthesis of the proposed CORDIC Circuit was implemented in xilinx and shown that the proposed design offer higher throughput, less latency for fixed angles of rotation.

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04. Low power optimization of full adder, 4-bit BCD adder.

P. Lata* and B. Rambabu

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Micro-electronic devices are playing a very prominent role in electronic equipments which are used in daily life. For electronic equipment battery life is important. So, in order to reduce the power consumption we implement a Sleepy technique to the electronic circuits. Sleepy technique is also called as power gating technique. In the power gating structure, a circuit operates in two different modes. In the sleep mode, the sleep transistors are turned OFF to reduce the leakage power. In the active mode, the sleep transistors are turned ON and can be treated as the functional redundant resistances, as circuit is in operation mode the power leakage should not be more than the basic full adder. When a sleepy transistor is placed at VDD, it is called as the "Header switch" and while it is placed near the ground, it is called as "Footer switch". Now in our project we implement this technique to the Full-adder and then it is used in 4-Bit Adder and 4-bit BCD Adder using 90nm scale technology. Without losing the CMOS logic a new full adder is designed by reducing the number of transistors which also leads to the reduction of chip size. In almost all electronic equipment full adder is used. So this project has been done with the aim of reducing the power consumption in the full adder circuit and implementing it in 4-Bit Adder and 4-Bit BCD Adder.

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05. Design of an efficient and faster SDRAM Controller

P. Sridevi* and B. Venu Gopal

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In this paper Double data rate synchronous dynamic (DDR SDRAM) accessing of memory and controller are designed in such a way that it supports double data transfer rate. To guarantee that the system works as intended, the memory controller is configured such that all the real-time requirements of all sharing applications are satisfied. A fully functional DDRSDRAM controller is designed to perform Read and Write operations on both rising and falling edge (DDR) of clock from the memory by using data path module with double data transfer throughput and bandwidth of the memory. The implementation uses direct clocking for data capture. To improve the access speed controller will generate the control signals at high speed and memory also supposes to access the data very easily. The memory has been designed to access the data by using the CAS and RAS signals in an easy way and controller also has been implemented with double data rate.For a single row different column data can be read at a time so the improvement of 28.57% in the performance of memory accessing.

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06. High energy Oxygen ion irradiation effects on thin films of Sr[(Mg0.32Co0.01)Nb0.67]O3

Bhagwanti Bishnoi* and P.K. Mehta

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Present paper gives detailed investigation of Sr[(Mg0.32Co0.01) Nb0.67]O3 [SMCN] thin films deposited on ITO coated glass substrate using Pulse laser deposition technique. In order to probe the stability of SMCN under high energy ion irradiation, swift heavy ion (SHI) beam irradiation experiments are performed using 100MeV O7+ ion beams. The effect of irradiation on films, fluence of 1×1012 and 1×1013 ions/cm2, are investigated by X- ray diffraction (XRD), UV-Vis spectroscopy, atomic force microscopy (AFM) and dielectric measurements. It reveals polycrystalline and uniform columnar growth in as- deposited films. Ion irradiation leads to partial amorphization as observed in AFM results. We have also observed drastic reduction in dielectric loss tangent (Tanδ) values. At 1×1013 fluence film shows very low values of tanδ~0.008 at room temperature. The temperature coefficient of dielectric constant (TCK) after irradiation has drastically fallen to 1/2 of its value in unirradiated film. Optimization of critical irradiation parameters may lead to its applicability in devices.

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07. Mathematical formulation of the writing pattern of different texts based on text length and word length frequency in intra text perspective for stories of Hindi language and comparison for two authors.

Hemlata Pande* and H. S. Dhami

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Present paper is an innovative attempt in the direction to represent the relation among text length (determined in two different ways) and the total frequency of words of particular lengths in mathematical form. The texts written by two different authors have been compared on the basis of the determined formulation.

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08. Reaction Kinetics of Oxidative Absorption of Nitric oxide into Sodium Hypochlorite Solution.

Bal Raj Deshwal* and Neha Kundu

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Absorption of nitric oxide into aqueous sodium hypochlorite solution was studied in a stirred tank reactor. The effect of various operation variables such as nitric oxide (NO) and sodium hypochlorite concentration, initial pH value, and reaction temperature etc. was critically examined. It was observed that the absorption process followed first-order kinetics with respect to both nitric oxide as well as sodium hypochlorite. Nitric oxide absorption reached to maxima when the initial pH value of aqueous sodium hypochlorite solution was taken 5.5 and thereafter absorption decreased slowly.

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09. Case Report: Iatrogenic Infertility Due to Missed IUCD.

Jethani M* and Shukla P

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IUCD is a widely accepted contraceptive prevelant among Indian Women. IUCD can lead to iatrogenic infertility. Such cases pose a challenge in diagnosis and treatment of patients. This is important in women where IUCD insertion is done by health workers, and patients are not exactly aware of its presence. CASE -A 42yr old woman complaining of Abnormal uterine bleeding. Abdominal X-ray showed a radio-opacity which resembled IUCD. Hence we did a Hysteroscopy, confirmed, localised and removed the missing device. CONCLUSION-Proper utilization of X-ray and Hysteroscopy helps to localize an IUCD for further management of patient to restore the fertility in patient and give them a chance to conceive again.

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10. Cholinesterase: Not a robust marker of systemic low-grade inflammation in hypertension.

Amisha Suri, Navjot Singh Samplay, Rajinder Singh, Sudhir Varma, Harcharan Singh and Kanchan Vohra*

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A prospective case-control study evaluated the novel risk marker cholinesterase (ChE) in comparison to a well-known marker high sensitivity C reactive protein (hsCRP) to predict the presence of low grade systemic inflammation and to find its applicability for being used in place of hsCRP to predict the risk of CVD. Method: 285 healthy and 960 hypertensive subjects with/without coexisting cardiac/metabolic diseases were enrolled. Patients were categorized in to three categories: firstly, based on hsCRP levels (<1, 1-3, 3-10mg/l), secondly, based on number of coexisting diseases/risk factors (one, two, three), and thirdly, based on stage of hypertension (pre-, stage 1, stage 2 hypertension), each into three sub-groups, respectively. Results: Increased serum levels of both hsCRP (mg/l) and ChE (U/L) were found in all three groups and subgroups (based on: hsCRP, risk factors, hypertension stage) of patients (all p<0.05) as compared to healthy subjects. Although, ChE was significantly correlated with hsCRP in both healthy and patient groups (p<0.01), yet it was affected by more number of variables than hsCRP. Conclusion: ChE can act as a marker of low grade systemic inflammation but not as robust as hsCRP to predict the risk of CVD.

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11. Proteins 2D Structure Prediction from 1D Sequence by Signal Processing and Soft Computing Methods.

Jayakishan Meher*

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Research in protein structure and function is one of the most important research areas in modern bioinformatics and computational biology. The structure of a protein is related to its function. The information necessary for protein folding resides completely within the primary structure. The development of rapid methods of DNA sequencing coupled with the straightforward translation of the genetic code into protein sequences has amplified the urgent need for automated methods of interpreting these one-dimensional(1D), linear sequences in terms of two-dimensional(2D) structure. There is a considerable room for improvement. In this paper an effective feature extraction method based on discrete wavelet transform (DWT) to detect informative proteins. Support vector machine, Multilayered perceptron (MLP) and radial basis function (RBF) neural network classifiers are used to efficiently to predict the protein secondary structure which aims to classify the three types of α-helix, β-sheet and C-coil. Effective numerical representation based on physico-chemical parameters such as EIIP, polarizabilty, dipole moment and alpha induces the prediction more accurately. The potential of the proposed approach is evaluated through an exhaustive study by benchmark non-redundant dataset and a prediction accuracy of 95% is achieved.

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