Volume 5, Issue 10, October 2014 Edition

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A generalized modeling of a PV System using Matlab Simulation with MPPT for the Speed Control of a 3-Phase Induction Motor[ ]


In this paper the speed control of three-phase induction motor is achieved and also the analysis of the motor parameters have been done with the help of the modeling and simulation of the induction motor in MATLAB 2011b. The photovoltaic (PV) array is used as a source which is taking the solar irradiation in the input, through which the induction motor is being operated. The PV array is modeled by connecting various solar cells in series and parallel combinations.The simulation of the PV array is done in the MATLAB 2011b software. The maximum power point tracking (MPPT) method is used to track the maximum possible power, and is modeled using the perturb and observe (P & O) algorithm. The modeling of the dc-dc buck converter is done to step-up the voltage to the desired level .To transform the dc voltage into the ac voltage an inverter is employed , which is getting the gate pulses from the pulse width modulation (PWM) generator. The PWM generator is generating the signals from the control strategy being used to convert the voltage from the two-axis reference frame to the three- phase and vice-versa. The modeling and simulation of each part is performed individually.

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Exhumation History and Tectonics across Purulia – Bankura Shear Zone: Constraints from Apatite Fission Track Analysis.[ ]


The Purulia-Bankura Shear Zone (TPSZ) is a ductile- to-brittle-ductile, tectonically disturbed narrow zone of nearly 150 Km with a WNW-ESE trend. Two different rock assemblages, the Chhotanagpur Gneissic complex and rocks of the Shinbhum Group (SG) Occur on opposite sides of this shear zone The TPSZ borders the Meso- Proterozoic greenschist facies litho-package of the SG, which is comprised of meta sedimentary rocks, felsic volcanics, mafics/ultramafics, granitoids and an alkaline/carbonatite suite of rocks. The Chotanagpur Gneissic Complex contains amphibolites to granulite facies in the north mafic-ultramafic suites of rocks that are in close proximity to felsic volcanics, suggesting a bimodal character of magmatic episodes. The TPSZ was subjected to a compressional regime, and its development is attributed to thrusting and wrenching. The area initially underwent rifting, volcanism, granite plutonism, and shallow sedimentation followed by shearing. The possible reactivation and exhumation history of the area was analyzed using apatite fission tracks (AFT). Offset of AFT ages between the two rock assemblages occur on the two sides of this shear zone, indicating that reactivation occurred due to over-thrusting at approximately 500 Ma, which is further supported by the results of thermal history models. The youngest AFT age of 260 Ma means that this age is a result of the entire thermal history of the sample. Furthermore, samples from Sushina hills indicate AFT ages decreasing towards Beldih via Chirugora. We interpret this to be an effect of motion along this shear zone. The thermal history indicates that the samples were rapidly exhumed at 600 Ma, given that the samples were cooled rapidly and subsequently re-heated; therefore, a cooling-only history is impossible. Denudations are predominantly controlled by tectonic processes and to a lesser degree, by erosional processes. Most of the sample ages are in the 200-to 300 Ma range, but their track-lengths are quite short, providing thermal history information before 600 Ma .

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AN IMPROVED METHOD OF QUALITY SERVICE DURING HANDOVER IN 3G WIRELESS NETWORKS[ ]


The convergence of heterogeneous wireless access technologies has been envisioned to characterize the next generation wireless network. The heterogeneous co-existence of access technologies with largely different characteristics results in handoff asymmetry that differs from the traditional intra network handoff (horizontal handoff) problem. The main secret behind the network failure in vertical handoff and improvements to maintain a constant network standard is considered in this paper. Analytical framework to evaluate the coverage performance which was validated by computer simulation and how the proposed analytical model that was provided for guidelines for the characterization of vertical handoff in integrated wireless network is also presented.

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REAL-TIME ANALYTICS[ ]


Internet communication provides the exchange of data between the client and the server.While doing this latency is a major issue faced by the internet communication.So inorder to overcome this we use Real-Time applications like polling,long polling,websockets. The most efficient communication can be done with websockets. This paper deals with the functioning of websockets and how we can overcome the limitations of polling and long polling. The Websocket specification defines an API establishing "socket" connections between a web browser and a server. There is a persistent connection between the client and the server and both parties can start sending data at any time.

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Study the role of thyroid hormones in colorectal cancer in Najaf / Iraq .[ ]


This study is designed to investigate the role of thyroid hormone in the incidence of colorectal cancer, besides to knowing the benefit of carcinoembryonic antigen tumor marker in detecting the prognosis of this disease. This study involved 70 persons divided into two groups: control group which including thirty five healthy persons and malignant group which contain thirty five patients with colorectal cancer after excision the tumor and received chemotherapy. The results revealed that smoking habit and obesity which reflecting by Body mass index were significantly associated with increased risk of colorectal cancer incidence.

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MICROPROPAGATION OF SYZYGIUM CUMINII L.USING IN VITRO TECHNIQUE[ ]


Immature seeds of Syzygium cuminii L. produced seedlings after a week when cultured on Murashige and Skoog’s medium supplemented with a cytokinin BA (0.05-1.0 mg/l) and NAA (0.01-0.05 mg/l). The seedling explants were induced to form callus on MS medium containing 2,4-D ( 0.05-1.0 mg/l ) with BA ( 0.5-2.0 mg/l). Such callii subsequently, produced shoot buds when sub cultured on MS medium supplemented with BAP (0.5-2.0 mg/l) singly or in combination with NAA (0.05-0.2 mg/l). Upto 85% of cultures showed shoot formation with about 25 shoots / culture from callus cultured on medium containing 1.0 mg/l of BA along with 0.05 mg/l of NAA. Adventitious shoots showed root initiation when sub cultured on MS medium containing IBA and / or NAA 1.0 mg/l). However further growth and development of rooted shoots occurred only when plantlets were transferred to MS basal medium. About 75% of rooted shoots have successfully been established to soil.

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Golden Ratio in Architecture and the Human Heart[ ]


Natural and artificial design always contains certain elements that provide the aesthetic attributes of the individual structure or item. These design elements might be unique to the individual items under study but in most cases, exhibit a pattern in the things that are aesthetically pleasing. The most famous of these patterns is the Golden Ratio that is also known as the Divine Section, Divine Proportion, and Golden Mean (Rydén, 3). It was first used in architecture in 2650 BC in the building of the Great Pyramids of Giza (King, 68). The Golden Ratio has also been observed in human anatomy, especially in the bone structure. The pattern of the human body provides a consistency that is harmonious and thought to indicate the perfect nature of human anatomy (Henein, 242). What is the importance of the golden ratio in architecture and the human body?

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ACCUMULATION OF HEAVY METALS IN INTERTIDAL GASTROPOD SHELLS USED AS BIOINDICATOR FROM URAN COAST (WEST COAST OF INDIA)[ ]


Hemifusus pugilinus, Bursa spinosa, Pollution, Atomic Absorption Spectrophotometer.

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HYDROMAGNETIC STABILITY OF A STREAMING COMPRESSIBLE GAS CYLINDER IN A LIQUID[ ]


The hydromagnetic instability of compressible hollow jet endowed with surface tension is discussed in the axisymmetric mode for all short and long wavelengths.The dispersion relation is derived and discussed analytically and numerically.

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Evaluation of fiungicides in vivo against Fusarium oxysporum causing Fusarium rot of Pleurotus spp.[ ]


Three selected fungicides Carbendazim, Bitrertanol and Captan at different concentration(0.025, 0.05, 0.1%) were evaluated for time taken (days) for complete colonization of mushroom mycelium, days for first pin formation, Percent increase in yield over control and disease incidence of Fusarium rot (Fusarium oxysporum). Out of three fungicides, Carbendazim was found to be most efficient fungicide.

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3D Reconstruction Based On Block Matching and Image Pyramiding[ ]


Nowadays, there is an increase in the usage of geometric 3D models in movie industry, games and virtual environments. There are several existing solutions like user-driven models, 3D scanners but they are not fully satisfying in either in terms of cost and or in efficiency. To overcome these problems, we have introduced a cost-effective solution based on analyzing image sequences. The main focus of this paper is on stereo vision; it is the process of recovering depth from camera images by comparing two or more views of the same scene. This paper mainly focuses on how to compute the depth map between two rectified stereo images. In this paper we use block matching, which is the standard algorithm for high-speed stereo vision in hardware systems. We first explore basic block matching, and then apply dynamic programming to improve accuracy, and image pyramiding to improve speed.

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A New Single-Phase to Three-Phase Adjustable Speed Drive Based on Z-Source Inverter[ ]


Three-phase to three-phase Adjustable Speed Drive (ASD) was widely studied for motor drives. This paper proposed a new single-phase to three-phase ASD system based on Z-source inverter. The Z-source inverter system has a unique X-shape of two LC network between in the frontend of the diode rectifier and the AC side. By controlling the shoot-through duty cycle, the Z-source can produce any desired output AC voltage. The overall system model and control is illustrated two control strategies are designed and investigated. As results the new proposed Z-source system provides ride-through capability during voltage sags, reduces source harmonics, reduces input voltage ripple, reduces hardware complexity, and extends output voltage range. Analysis and simulation results will be presented to demonstrate these features.

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AN EMPIRICAL MODEL OF AUDITING SERVICE OVER CLOUD DATA RESOURCES[ ]


Auditing over cloud data is an interesting research issue in the field of cloud computing. Data owner uploads data fragments after the segmentation of data component to cloud server and auditor monitors data component which is uploaded by the data owner, traditional approach completely depends on third party auditor. In this paper we are proposing an efficient auditing protocol with Meta data transfer to third party auditor instead of complete data component and dynamic updating when a block of data component corrupted.

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COMPARATIVE ANALYSIS OF QUADRUPLE CONICAL TANK AND CYLINDRICAL TANK SYSTEM[ ]


Most of the industrial process are highly nonlinear and dynamic. Design of multivariable control system is of great demand in the process industry. System having more than one actuating input and then control output are consider as a multivariable system or MIMO system. Designing of quadruple tank level control system is most challenging. Depending upon the shape and size of the tank system behavior also different. Here we compare the quadruple conical tank and cylindrical tank process.

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Review of Twitter sentiment analysis[ ]


Twitter data has recently been considered to perform a large variety of advanced analysis. Analysis of Twitter data imposes new challenges because the data distribution is intrinsically sparse, due to a large number of messages post every day by using a wide vocabulary. Sentiment Analysis task is divided in two steps: Feature selection methods and Sentiment classification methods. Feature selection methods aims at selecting appropriate words from the text used for sentiment analysis. Sentiment classification methods are classified as machine learning methods, lexicon based methods and hybrid methods. Each method is having its own limitations. The paper mainly focuses on the twitter sentiment datasets and tools which are freely available for research purposes.

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e-voting system using QR code and Mobile OTP based on Android platform for modern individuals[ ]


Electronic voting (also known as e-voting) is often viewed as a tool for making the electoral process more efficient and for increasing trust in its management system. Proper implementation of e-voting solution can increase the security of the ballot, speed up the processing of result and make voting easier. Sometimes, the challenges are considerable. If not carefully planned and designed, e-voting can undermine the confidence in the whole electoral process. This paper outlines contextual factors that can influence the success of e-voting solution and highlights the importance of taking these fully into account before choosing to introduce new voting technologies. The development in mobile devices, wireless, android technologies and data communication results in new application that will make voting process easier and efficient. e-voting system can cast and count votes with higher convenience and efficiency which even reduces mistake rate of ballot examination. In this paper, Network, Short Message System (SMS) and e-mail provides 3 factor authentications to voters.

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Quantitative determination in three way calibration strategies with hyphenated data (chromatography-spectroscopy) of Polyherbal herbomineral formulation[ ]


Chemometrics involved application of various three way calibration method, such as the generalized rank annihilation method (GRAM) and parallel factor analysis (PARAFAC) for drawing vital information from various complex and uncharacterized mixture. In this paper, theoretical and practical progression and overview of three way calibratio method from the flexible PARAFAC to Tucker-3, N-Partial Least square (N-PLS) have been discussed. The ability of three way analysis to uniquely deconvolve overlapped spectral signatures is harnessed to extract the analyte signal from an unknown and uncalibrated background prior to quantization with the help of appropriate algorithom. Calibration approaches PARAFAC can be used to analyze the data obtained from various instrument like NIR, ATR-FTIR, HPLC-DAD, Sensory Analysis, 2D-NMR. The technique has been used in the quality assurance and quality control of polyherbal&herbomineral formulation powder, capsule parametric test has also been discussed . It can be used easily multivariate environments like Ayurvedic formulation as a routine parameter.

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