Volume 6, Issue 5, May 2015 Edition

Publication for Volume 6, Issue 5, May 2015.

IJSER Research Group https://www.ijser.org/forum/index.php Register for IJSER Research Forum      IJSER Xplore IJSER Xplore Research Paper Database
Pages   [1] [2] [3] [4] [5] [6] [7] [8] [9] [U]
 

Modeling the Specific Energy in Turning Operations by Taguchi L32 Orthogonal Array Design[ ]


This study considered Cutting Speed V, Feed rate F, Depth of cut D and Cutting Environment E as the input parameters for a Design of Experiment (DOE) based on a mixed-level Taguchi L32 orthogonal array. The test runs were conducted on a conventional lathe with spindle power of 3.75kW using TiN coated cutting tools and AISI 1040 carbon steel as workpiece. Signal-to-Noise (S/N) ratio analysis was applied to determine the optimum level for each parameter while analysis of variance (ANOVA) was employed to analyze the significant contributions of the control factors influencing the outcome - Specific Energy Consumption (SEC). Response surface methodology was used for developing a second order model for SEC as an energy efficiency indicator in Turning operations. Genetic Algorithm Solver was also used as optimization tool for the model. Results showed that for minimizing SEC, F was the most significant factor with a percentage contribution of 84.35% followed by V, E and D. The SEC model proved to be highly significant with p-value < 0.05 and was well fitted with the experimental value showing a high coefficient of determination (R2= 91.78%) value.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Evaluation of Groundwater Quality and its Suitability for Drinking Purposes – A Case of Leh Town, Ladakh (J&K), India[ ]


The present study, describes about the water dynamics in fast changing town of Leh, located in the state of Jammu and Kashmir, India. Groundwater since ancient times in the form of springs provided ample water for the region and its contribution has increased manifold in the wake of recent spurt in bore well installations, especially, in Leh town. Due to increasing urbanization, with surge in a huge floating population in the absence of a sewerage link in summer tourism boom season, puts an extra stress on the limited water resources of the area and with the rising living standards, grey and black water is being disposed off in soak pits or septic tanks without any treatment. This may lead to pollution of groundwater resources especially, in the densely populated residential areas. For insuring sustainable development of groundwater, in the absence of any observation wells for constant monitoring of quality or quantity of groundwater and the unregulated installation of bore-wells makes this quality characterization very significant and helps in future management. The physico-chemical parameters like pH, electrical conductivity, turbidity, total dissolved solids, hardness, alkalinity, nitrates, fluoride, chlorides were analyzed to meet the objective of the study. The results revealed that in general, the present status of groundwater quality is suitable for drinking purposes and out of 20 total samples evaluated, 75% of samples had NTU (Nephelometric Turbidity Unit) above desirable limit while 10 % samples each recorded TDS (Total Dissolved Solids) and EC (Electrical Conductivity) above desirable limits.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Radial Configuration of Ring Main Distribution System Using Least Apparent Power Flow Method[ ]


This research suggests an idea of converting ring main network to a radial system by the utilization of least apparent power flow methodology through network line switching.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Oxygen Separation from Air Using Zeolite Type 5A[ ]


An adsorption (PSA) unit consist of two – tubes columns pressure swing, (6cm diameter and 70cm bed length) and a dryer part (12cm diameter and 27cm) filling with activated alumina (Al2O3) have been constructed to study the separation of oxygen from air using commercial 5A zeolite under the effect of adsorption pressure (1 to 6 bar), adsorption time (20s), product flow rate (1 liter/min) on the product oxygen purity. For the case of 2-column, 4-step operation, the results show that an optimum concentration product of oxygen was 76.9%purity, at the adsorption pressure 4bar, Temp 17.4oC.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Mathematical Modelling of Temperature Rise in Clutch and Design, Analysis and Fabrication of Cooling System for Clutch[ ]


The temperature rise in a motorcycle wet multi-plate clutch during engagement and disengagement is very crucial because it is one of the parameters which have a direct influence on the clutch life. The slipping of the clutch happens during engagement and disengagement where the friction material on the plates will undergo a change of state from solid to semi-solid state and the friction material properties start to deteriorate. In order to optimise the clutch life it is very important to identify the parameters affecting temperature rise. The temperature measurement setup was developed during the Internship program. Mathematical modelling would help in developing the equation for predicting the temperature rise. The project involves combining equations of different physical phenomena like heat conduction in the plates, convective heat transfer by the lubrication oil, torque transfer by the clutch and energy balance equations. Mathematical modeling using ordinary differential equation was determined to calculate the temperature rise. The mathematical model was analyzed using MATLAB and graphs were generated. The generated graphs were compared and validated by the experimental results obtained from Internship program. The cooling system of clutch was designed, analysed and fabricated by providing cooling fins to the existing clutch cover for improving the cooling for the existing system.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Antilock Braking System Controlled Using 555 Timer in Pneumatic System[ ]


In today’s world, braking is the most important part in an automobile. Brakes are energy conversion devices, which convert kinetic energy of the vehicle into thermal energy and thus due to friction braking happen. In Antilock Braking System, we can prevent the locking of the wheel and hence skidding, using an Electro Mechanical Control System. The main issue behind the locking of the wheels is that, when we apply break it locks the wheel which cause skidding of wheel and because of that the driver lost the control over driving.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Evaluation of teratogenicity of anti-osteoarthritic drugs on development of offspring of albino rats during pregnancy and lactation[ ]


The present study aimed to evaluate the teratogenic effects of the anti-osteoarthritic drug (Genuphil) administered daily orally to the pregnant rats and nursing rats. The pregnant rats were treated during gestation and lactation with doses of 120 and 240 mg/kg. The animals were sacrificed at the end of gestation and during lactation. Fetuses were removed from the uterus and evaluated for mortality rate, growth parameters, morphological and skeletal malformation as well as histological study of liver, kidney and brain. Results showed decreased weight gain, fetal growth retardation during gestation and lactation was dose dependent. Hematomas and anomalies of limbs were detected morphologically in the fetuses of the treated groups. Fetal skeletal abnormalities included skeletal defects in hind and fore limbs, shortness of the terminal ribs, bent and wavy ribs. Histopathological studies of pregnant rats and their fetuses during gestation and lactation revealed Few inflammatory cells infilteration in the portal area as well as in between the fatty changed hepatocytes with dilatation in the portal vein, Brown pigmented material in the periphery of the dilated central veins, oedema, congestion in the portal vein, Granular and swelling degenerations in the hepatocytes in the liver. Degenerative change, swelling, Coagulation necrosis, Swelling degeneration in the lining epithelium of the tubules, swelling of the glomeruli in the lining endothelium of the tufts and focal haemorrhage in between the degenerated tubules were observed in kidney of the treated groups while vacuolization and degeneration in the cerebrum were observed in the brain following Genuphil administration.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Use Potomogeton pectinatus plant as vital indicator of contamination of heavy elements in the Tigris River passing through Baghdad[ ]


The results of this study were obtained possibility of using plant Potomogeton pectinatus as a vital indicator of pollution in the Tigris River for its portability absorbed heavy elements. Results showed there is a connection in the concentrations of elements (Pb, Zn, Ni, Cu, Co, Cd) in water and plant samples in different areas of the study, which was a bit high in the plant as compared with water. Physical and chemical properties of water also revealed an increase in PH and TDS values As well as an increase in some of the concentrations of Cation and negative ion , PO4-2, HCO3 in the waters of the river, especially in some stations located in the Zafaraniyah area and respectively down to the Diyala River, which refers to the water pollution in the study areas, as a result of sewage effect and processes of soil washing lands surrounding the river as well as industrial waste flowing into the river, as well as the nature of the river basin, which abound where Plaster and saline soils, leading to a change in the hydrochemical characteristics and quality of water.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Design and Evaluation of classification algorithm on GPU[ ]


Recent developments in Graphics Processing Units (GPUs) have enabled inexpensive high performance computing for general-purpose applications. Due to GPU's tremendous computing capability, it has emerged as the co-processor of CPU to achieve a high overall throughput. CUDA programming model provides the programmers adequate C language like APIs to better exploit the parallel power of the GPU. K-nearest neighbor (KNN) is a widely used classification technique and has significant applications in various domains. The computational-intensive nature of KNN requires a high performance implementation. In this paper, we propose GPU based parallel implementation of KNN. We evaluate our implementation by using different size of images. Our parallel implementation gives us 1.68X speed up, while working with GPU gives us 8.413Xspeedup

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Development and Optimization of Mechanical Strength Model of Cement-Laterite-Sand Hollow Sandcrete Blocks[ ]


The shortage of sharp sand in many areas reduces raises the cost of concrete production. This paper investigates the model development and optimization of the compressive strength of 60/40 laterite/sand hollow sandcrete block. Laterite is a reddish soil layer often belying the top soil in many locations and further deeper in some areas. The study applies the Scheffe’s optimization approach to obtain a mathematical model of the form f(xi1,xi2,xi3,,xi4), where xi are proportions of the concrete components, viz: cement, laterite, sand and water. Scheffe’s experimental design techniques are followed to mould various hollow block samples measuring 450mm x 225mm x 150mm and tested for 28 day The shortage of sharp sand in many areas reduces raises the cost of concrete production. This paper investigates the model development and optimization of the compressive strength of 60/40 laterite/sand hollow sandcrete block. Laterite is a reddish soil layer often belying the top soil in many locations and further deeper in some areas. The study applies the Scheffe’s optimization approach to obtain a mathematical model of the form f(xi1,xi2,xi3,,xi4), where xi are proportions of the concrete components, viz: cement, laterite, sand and water. Scheffe’s experimental design techniques are followed to mould various hollow block samples measuring 450mm x 225mm x 150mm and tested for 28 days strength. The task involved experimentation and design, applying the second order polynomial characterization process of the simplex lattice method. The model adequacy is checked using the control factors. Finally a software is prepared to handle the design computation process to take the desired property of the mix, and generate the optimal mix ratios.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Modeling of a Three Legged Self Supporting Telecommunication mast under sudden side wind Crash Loading[ ]


This Paper is on the modeling of telecommunication mast in a windy environment. The effect of sudden side crash wind load on a 3-legged Self Supporting Telecommunication Mast was studied in a 3-D modeling ANSYS environment. The behavioral patterns under full loading in windy environment were observed. The full loading being the self weight, communication system weight coupled with wind load. The effects of the bolts were neglected. The height of the modeled mast is 26.58m (2658cm or 26580mm). The mast was subjected to wind load from the side at different heights with the top mast having a load of 6196N and12908N at height 8.36m, in addition to the system load. A displacement of 17.486mm was seen to occur at the top and 0 mm at the base showing a fatigue loading at wind frequencies. The fatigue loads were observed to be much below the fatigue limit (endurance limit for mild steel). Direct stresses showed compressive stresses concentrated on a leg and of greater magnitude than tensile stresses developed on each of the two other legs opposite the points of wind application. The tensile stresses were balanced out by the compressive stresses to maintain mast stability.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Effect of Thermal Stresses on Self-Supporting Telecommunication Mast[ ]


This work has studied the effect of thermal stresses on four-legged Self Supporting telecommunication mast. ANSYS software was used in studying the displacement patterns due to daily fluctuating temperatures over a period of 5 yearsusing Ibadan, Nigeria metropolis environment as a case study.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Adsorption Kinetics of Bromophenol Blue and Eriochrome Black T using Bentonite Carbon Composite Material[ ]


The present study deals with the adsorption of Bromophenol blue (BB) and Erichrome black T (EBT) – two anionic dyes – onto bentonite carbon composite material (BCC). Batch studies were performed to evaluate the influence of various experimental parameters such as: pH, contact time, adsorbent dose and initial dye concentration. The optimal conditions for the dyes removal were found to be at pH = 1, applying a dose of 10 g.L-1 and 20 g.L-1 and for an equilibrium time of 40 mins for both dyes BB and EBT removal, respectively. The results also showed that process followed pseudo-second-order rate expression for dyes with a degree of intraparticle diffusion for BB and intraparticle and pore diffusion for EBT and it was found to be best represented by the Freundlich isotherm.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Advance Underwater Image Reconstruction using Un-sharp Masking and AFSMF: A Review[ ]


An underwater image can be distorted due to light scattering and color change. It caused to one color dominating an image. As we know that the refractive index of water is high in comparison to air, therefore when light is come on water, it gets refracted. Therefore, underwater images have the deficiency of limited range visibility, low contrast, blurring, color diminished and noise. One way to improve the image quality is known as image enhancement. This paper presents a comparative study of the different techniques of image enhancement used for enhancing underwater image. Along with the comparisons the paper also presents a new approach for image enhancement using Un-sharp Masking and the enhanced images are characterized by a reduced noised level using Adaptive Fuzzy Switching Median Filter. Finally a new enhanced underwater image can be obtained by applying proposed method.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Biosurfactant Production with Various Optimization Parameters[ ]


Biosurfactants are amphiphilic compounds produced on living surfaces, mostly on microbial cell surfaces, or sometimes excreted extracellularly. They contain hydrophobic and hydrophilic moieties that reduce surface tension, and interfacial tensions between individual molecules at the surface and the interface respectively. Pseudomonas aeruginosa was grown on the basal medium and inspected for rhamnolipid production. Different carbon sources and various conditions of pH, temperature, agitation conditions and time of incubation were varied to find out optimum growing conditions. The optimum production of 131.2gm/350ml was found on the 12th day from the carbon source glucose at pH 7, temperature 370C, and 150 rpm.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
NESTING ECOLOGY OF CHIMPANZEES IN AFI MOUNTAIN WILDLIFE SANCTUARY, BOKI, CROSS RIVER STATE, NIGERIA[ ]


The nesting behavior of chimpanzees in Afi Sanctuary was studied to find out their nests locations and heights. The line transect survey method was used in this study. This was done by following transect routes and trails of animals. The distances were labeled with flagging by the protection staff with reference to cardinal points. The sampling technique adopted was stratified random sampling done by the survey of 30 transect routes in which accessibility was not made impossible by terrain. The transect length covered a distance of 2000m and a width of 100m which formed a total sample area of 6km2 representing a sampling intensity of 6% of a total area of 100 km2. Ten surveys were carried out in all. Nests census was carried out by counting nests while nesting behaviour was studied by the use of binoculars to observe the nests sizes, shapes, and materials since nests of chimpanzees are usually built at heights above the ground surface. Trees and nests heights were determined by the use of sunto clinometer. The number of nest studied for nesting location and heights was 64 while 30 was for nests sizes. The mean nests heights, X, was 19.26m. The Variance, S2, of nests heights was 55. The Standard deviation, S, of nests heights was 7.4; while the Standard error of the mean, SE, of nests heights was 0.92. 41 nests representing 64.06% were built between vertical trees forks; 11(17.18%) nests were built between horizontal trees forks; while 8 (12.50%) and 4 (6.25%) nests were made on trees platforms as well as vine tangles respectively. Trees were critical for chimps night rest and critically recommended for protection and management.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Indexed Map-Reduce Join Algorithm[ ]


Map Reduce is used to handle and support massive data sets .rabidly increasing in data size, and big data are imperative today to make an analysis of this data. Map-Reduce gets more helpful information by using two simple functions map and reduce with load balancing, fault tolerance, and high scalability .the most important operation in the analysis process is join. This paper explains new two-way join algorithm called Indexed Map Reduce Join Algorithm that used Index in the large table to Decrease I/O and Shuffling that cause Best performance in Map Reduce Join. Our experimental result shows that using Index-join algorithm has high performance than other algorithms while increasing the data size from 100 million records to 500 million without memory overflow.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Energy Efficient Routing Protocol for Cluster Based WSN with Non Uniform Node Distribution[ ]


Clustering is an efficient method for increasing the lifetime of wireless sensor network systems.The energy consumption associated with the cluster based wireless sensor network systems is more inconsistent. This imbalance in the energy consumption is due to the non-uniform node distribution. To avoid this problem, introduce a cluster based routing protocol with non-uniform node distribution. It consists of an energy efficient distributed clustering algorithm, EEDC and cluster based routing algorithm. EEDC helps for the clusters of even sizes. At the same time with the help of clustering algorithm, the cluster head can choose their next node which has higher residual energy and lesser number of member nodes. These helps in achieving load balance among cluster heads.Theoretical analysis and simulation results show that EEDC balance energy consumption well among the cluster heads and increase the network lifetime effectively.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
On b-p - -Continuity Where {L, M, R, S}[ ]


The authors Selvi.R, Thangavelu.P and Anitha.M introduced the concept of -continuity between a topological space and a non empty set where {L, M, R, S} [4]. Navpreet singh Noorie and Rajni Bala[3] introduced the concept of f# function to characterize the closed, open and continuous functions. In this paper, the concept of - -continuity is introduced and its properties are investigated and - -continuity is further characterized by using f# functions.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
THE IMPACT OF DIABETES ON THE RATE OF PROGRESS OF CHRONIC RENAL FAILURE[ ]


Diabetes mellitus still remains a serious health problem with a high prevalence worldwide in developed and developing countries, and with major impact on increasing the level od cardiovascular mortality and morbidity. Diabetes is counted as the fourth cause of mortality in developed countries. (7). In the United States and in Western countries diabetes with diabetic nephropathy, is recognized as the leading cause of kidney disease and chronic kidney disease at terminal stage. A large number of epidemiological studies have shown that one third of patients with hemodialysis or kidney transplanted patients with diabetes mellitus are tip 2. (8,9). Purpose of the paper:The purpose of the paper was to verify and document the impact of hyperglycemia in the rate of progress of chronic renal failure, as well as the correlation between hyperglycemia with cardiovascular disease and premature atherosclerosis of uremic and Diabetes Mellitus patients treated with hemodialysis, compared with the control group of healthy individuals. Material and methods of work, the control group, and forms of treatment with dialysis:In this prospective cohort research (,, cross-section ") are included 240 examiners, of whom 120 were uremic and diabetes mellitus patients, while 120 were healthy individuals who served as a control group. Blood taken for examination inserted into the vial with a few drops heparin (5ccm serum) were sent for analysis at the Institute of Clinical Laboratory in Skopje. From uremic and DM patients treated with HD (No.120), 54 of them (45%) were female with an average age 58.60 +/- 12.00 ndersa 64 (55%) were male, with an average age: 59.50 +/- 10.50 year. Control group of healthy examiners (voluntary blood donors) also were 120 of whom: 54(45%) were female with an average age of =58.0013.20 and 64(55%) men with an average age of 57.60  14.00 years. Control group was similar to the group of sick patients by age, gender and national affiliation. From total number of patients (120) 75 were with Diabetes Mellitus Tip-1 (D.M. Tip1 –insuline dependent) while 45 were patients with Diabetes Mellitus Tip-II ( D.M. tip 2 –tretated with oral hypoglycemics), table number 1. Both, patients and control group were analyzed within 12 months – once every three months, a total of 4 measurements, glycaemia profile, glycosylated hemoglobin (HbA1c), lipid profile and BMI (Body Mass Index) . Numerous studies have verified the impact of control of blood glucose and glycosilated hemoglobin (HbA1C) values in preventing micro/ macrovasculare and cardiovascular disease. (10)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Comparison of two commonly used techniques for Vehicle License Plate Recognition[ ]


Many algorithms and techniques have been developed to deal with the problem of extracting and recognizing the license plate characters from images of cars. Vehicle license plate recognition is the essence of present world vehicle related security and vehicle management systems. In this paper we compare two commonly used algorithms. Both the algorithms have been tested on more than 400. Presence of many types of license plate makes the problem difficult to solve. We have made some assumptions in the algorithms like a standard license plate is present with light background and darker characters, not more than two rows are present, same type of characters are present all through, etc. One algorithm uses morphological operators for edge detection and the other one uses sliding concentric windows technique.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
EVIDENCE OF INCREASED OXIDATIVE STRESS AND DNA DAMAGES IN OLIGOSPERMIA[ ]


Oligospermia is defined as a sperm density (count) less than 20 million/ml. Infertility affects approximately 15% of couples worldwide, among them 20–25% of reproductive problems being contributed to male factor. Male infertility is a relatively common condition affecting approximately 1 in 20 of the male population. Defective sperm function is held to be the largest, single and defined cause of human infertility. The excessive generation of reactive oxygen species (ROS) by abnormal spermatozoa has been defined as one of the important etiologies for male infertility. Generation and persistence of ROS in seminal fluid and sperm increase the rate of lipid peroxidation of sperm membrane which is manifested by a high MDA level. The present study was undertaken to evaluate the role of oxidative stress by measuring the level of oxidative stress marker, Malondialdehyde (MDA), in the sera of males suffering with oligospermia. The extent of somatic DNA damage in these subjects was quantified by using Cytokinesis Block Micronuclei Assay. These investigations were carried out in 56 subjects suffering with oligospermia and 15 healthy fertile men as control subjects. The MDA value and the micronuclei frequency was significantly elevated in study subjects as compared with that of control subjects. The finding of increased oxidative stress marker level may indicate that oxidative stress may be involved in the pathogenesis of sperm DNA damage leading to oligospermic condition as well as infertility in male subjects. These individuals can be better informed about the extent of somatic DNA damages, oxidative stress and genetic risks. This may help in preventing the sufferings of infertile subjects with oligospermia.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Design Of 2x2 Shaped Rectangular Micro strip Array Antenna For GSM Application[ ]


In this paper, 2X2 shaped rectangular micro strip patch antenna for GSM application is presented. Design simulation and optimization processes are carried out with the aid of the HFSS simulator. The proposed antenna is fabricated on a 1.5 cm thick RT Duroid substrate with a relative permittivity of 2.33. The antenna offers excellent performance for GSM systems at center frequency 900MHz. The gain of these antennas are simulated and found adequate which is about 13.8 and 14.4dBi. Measured and simulated results of the resonant frequency, return loss, radiation patterns are presented.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
System Reliability in Health Care Systems[ ]


Health Information enhances the quality and efficiency of Health Care Systems. The findings provide an important base line for future evaluation. In this paper, we discuss System Reliability in Health Care Systems. The knowledge of System Reliability concepts helps the Systems in Health Care to be more perfect and improve its status for the betterment of the Society. Here we make use of the System Reliability of Mixed Parallel Configuration Systems and using Fault-tree Analysis approach determine the Reliability of Child-birth Status of Pregnant Women affected by Anemia and Reliability of cure of Typhoid disease affected persons in a particular area. This type of studies enables us to take preventive measures in Health Care Systems.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Improved Accuracy and User Satisfaction by Inferring User Search Goals based on Implicit and Explicit Feedback[ ]


In web search engine user submits query for getting information in easiest way. Different users may have different search goals when they submit it to a search engine. The inference and analysis of user search goals can be very useful in improving search engine relevance and user experience. In this paper, we propose a novel approach to infer user search goals by analyzing search engine query logs. First, we propose a framework to discover different user search goals for a query by clustering the proposed feedback sessions. Feedback sessions are constructed from user click-through logs and can efficiently reflect the information needs of users. Second, we propose a novel approach to generate pseudo-documents to better represent the feedback sessions for clustering. Finally, we propose a new criterion “Voted Average Precision (VAP)” to evaluate the performance of inferring user search goals. Experimental results are presented using user click-through logs from search engine to validate the effectiveness of our proposed methods.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Text Mining in Biosciences-A Review[ ]


In this recent scenario, the research towards the area of text mining in biosciences are lacking. This paper is based on the survey made in biosciences using text mining in the document world. The data which do not have clear classification and answers can also be implemented and evaluated successfully by clustering. Now, analyzing the data plays a vital role which is done by information retrieval. Errors and evaluation has to be minimized and validated for accurate and immediate goal. This paper discusses various techniques that can be integrated with this multidisciplinary field of Text Mining. The different methods used by the researchers are discussed in this work.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Use of PAPR Control and Sub-sliding Windowing Techniques in the improvement of the Bit Error Rate in IFFT-FFT and IDWT-DWT Based OFDM Systems[ ]


The paper aims at providing an efficient MATLAB Code in obtaining significant reduction in the Bit Error Rate (BER) Curve for two different Orthogonal Frequency Division Multiplexing (OFDM) Systems: FFT-IIFT OFDM System and an IDWT-DWT OFDM System, based on the knowledge obtained from Peak to Average Power Ratio (PAPR) Control and Sub-Sliding Windowing techniques. While the IFFT System has been BPSK Modulated, the IDWT system has been QAM Modulated. These modulation techniques are used in keeping with the state-of-the-art wireless communication systems and services.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
A New Approach to the Possible Relationship between English Morphological and Vocabulary Knowledge: A Case Study[ ]


The morphological knowledge is an influential strategy for learning foreign languages. The aim of the current study is looking at the potential relationship between English morphological and vocabulary knowledge of Iranian pre_university students. Seventy Iranian pre_university students ranged between 18-19 years old were considered to perform the current study. Nation’s 2000_word level Vocabulary Test (VLT) were used to examine their vocabulary size while their morphological knowledge, including knowledge of inflection, derivation and compounding, were assessed through Morphological Knowledge Test. To realize whether there is a correlation between their morphological knowledge and vocabulary size or not, a statistical analysis were performed. It was observed that there is a strong correlation between overall morphological knowledge and vocabulary knowledge of Iranian pre_university students. Further, the critical effect of various features of morphological knowledge on vocabulary size was highlighted. Moreover, a questionnaire was used to evaluate ideas of students about the tests. Based on the results of the current study, it is suggested that morphological knowledge can be accounted as a powerful vocabulary learning strategy to improve English learning and vocabulary size of Iranian pre_university students.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Pages   [1] [2] [3] [4] [5] [6] [7] [8] [9] [U]