Archives-April 2016

ABSTRACT In this paper induction motor speed controlling using FOC with genetic algorithm tuned hybrid PID plus fuzzy controller is discussed. Tuning of PID plus fuzzy speed controller by GA improves static and dynamic performance of FOCIM. Nonlinear induction motor modeling is modeled as linear model for optimization of controller gains. Matlab/Simulink based simulations are carried out with different cases to check efficiency of proposed controller. These results are compared with conventional trial and error method to check improvement in peak overshoot and response time. Keywords: FOCIM (Field Oriented Control Induction Motor), Genetic Algorithm, Fuzzy, mutation, crossover.

Our paper is divided into two parts compression technique and block matching algorithms. Set Partitioning in Hierarchal Trees (SPIHT) and Spatial orientation tree Wavelet (STW ) are Compression technique and Adaptive Rood Pattern Search is a block matching algorithm. Usually medical images are generated from different –different image diagnostic centers. For fast transmission, reception and to reduce the storage capacities we do compression with better picture quality. SPIHT and STW are compared in terms of Compression ratio (CR) and Peak Signal to Noise Ratio (PSNR) .For better Compression Ratio and Peak Signal to Noise Ratio we used STW and SPIHT respectively. ARPS consumed less Time among all other existing algorithms.

Gate valve are traditionally used for controlling the discharge in pipes. The valve is operated by rotating the wheel provided on the top a rod which is also connected to circular disc on other side of it. Every single rotation of wheel produces specific linear movement of disc which in turn tends to change the area of flow. It is expected that for same disc position, the discharge should be same, but the analysis showed that the discharge varied considerably. Further analysis repeated that it is happening on account of the fluctuating separation zones formed on either side of the disc. To address this issue, it is proposed to use a flexible membrane pipe inside the gate valve. This membrane will not allow the separation zone to form, as its shape will automatically change depending upon the disc position and intensity of discharge. It is similar to that of venturimeter with dynamically changing convergent and divergent cones. With this new adaption an experimental setup is fabricated with 1 inch pipe. Thus results have shown excellent improvement in the relationship between disc position and discharge. Further it is calibrated with respect to rotation angle of wheel. The experimental study has shown that the new gate valve can also be used as flow measuring device. The paper describes the journey of gate valve from flow control device to flow measuring device.

Some construction methods of 3-resolvable regular group divisible designs based on incidence matrix of known affine resolvable balanced incomplete block designs and 3-resolvable group divisible type partially balanced incomplete block designs with unequal block sizes within each resolution set based on incidence matrix of known symmetric balanced incomplete block designs are proposed with illustrations.

The industrial effluents have been recommended as potential source of irrigation water and nutrient sources for commercial cropping system. However, the high nutrient loads and presence of some growth retarding substances in industrial effluent may cause severe impact on plant germination and gross productivity of a commercial crop. Prior to field application the industrial effluent should be tested for its ecotoxicity using seed bioassay test. The of this study was to investigate the toxicity of distillery effluent (DE) using seeds of moong (Vigna radiata), guar (Cyamopsis tetragonoloba), Makai (Zea mays) and gehu (Triticum aestivum). For lab trial, a total of a total of five different concentrations of distillery effluents (20, 40, 60, 80 and 100%) were prepared by adding required quantity of distilled water. Seed germination, root length, shoot length, root weight, shoot weight and chlorophyll level etc. were measured in experimental set-ups. Result suggested 40% DE strength suitable for plants: C. Tetragonoloba (67.7%), T. aestivum (64%) and Z. Mays (92.3%) except in V.radiate (98% germination with 60% DE). The high DE indicates a toxic impact on seed germinations. The seedling growth and biomass also showed a close relationship with strength of DE in treatment set-up. In majority of set-ups, set-up with 20 – 60 % DE strength showed the better results of plant groths. The biochemical stress of high DE strength on seedling was also observed in this study. The study clearly support the utility of DE for plant production but after proper dilutions of the effluent.

Weight loss and thermometric methods have been used to study the corrosion inhibition efficiency of aluminium in HCl solution by naturally occurring Commiphora wightii and four newly synthesised Mannich bases. Result of inhibition efficiencies obtained from both methods are in good agreement with each other. Efficiencies of inhibitors increase with increasing concentration of inhibitor.The efficiencies of mannich bases have been compared with naturally occurring Commphora wightii.The efficiency of Commiphora wightii has been found much more than Mannich bases.

Induction motors plays a vital role in almost all the industrial drive systems because of their simple, efficient and robust nature offering high degree of reliability. These machines face various stresses during operating conditions which may lead to different types of faults. Hence condition monitoring and maintenance becomes necessary in order to avoid unexpected failures. Different fault monitoring techniques for induction motors can be broadly categorized as model based techniques, signal processing techniques, and artificial intelligence based soft computing techniques. The traditional model based diagnostic techniques provides a good detection of the fault in the machine but nowadays artificial intelligence techniques have been introduced to overcome the existing inaccuracy. Soft computing techniques enable better analysis of a faulty system even if models are inaccurate. Besides giving improved performance these techniques are easy to extend and modify. This paper provides a comprehensive study of conventional and innovative techniques. Keywords: Induction motor, motor faults, diagnostic techniques

The online social media is the great area of research which is explored by the researchers now days. There are number of areas in which overlapping community detection works. In this paper we have done comparison of various algorithms in order to detect the overlapping communities in the Facebook network. The framework for evaluating various algorithms is described which helps in disclosing the person’s membership in multiple clusters. The cluster is a collection of number of distinct users belonging to one or more groups. This paper evaluates the comparison between various algorithms which are used for overlapping community membership detection. Experimental results shows that CPM can give better results in less amount of time.

This study aims to identify (1) the correlation between workplace happiness with teachers innovative behavior, and (2) the influence of workplace happiness on the teachers innovative behavior. A total of 835 teachers from 167 secondary schools were randomly selected daily from the three states in northern Peninsular Malaysia (Penang, Kedah and Perlis) as a sample. A questionnaire consisting of four parts have been used to obtain data from respondents. Translated questionnaire of Pryce-Jones (2010) was used to measure workplace happiness. Meanwhile, a questionnaire from Nik Azida (2007) was used to measure the behavior of teachers innovative. Findings indicate there are four dimensions of workplace happiness has a correlation with the behavior of teachers innovative. Furthermore, the results show several dimensions of workplace happiness has a significant influence on the contribution of teachers innovation behavior namely teacher contribution and teacher confidence. In conclusion, this study describes how the principal use of the workplace happiness to further strengthen the leadership and school culture in order to enhance school improvement such as the behavior of teachers innovative.

A study was conducted to identify the major dairy production constraints in Alaba Wereda, the Southern Nations and Nationalities People Region to provide base line information on the major dairy production problems in the area. A total of 60 respondents (10% from total population) were selected from 6 peasant associations and interviewed using structured questionnaire. Focus group discussion was also made with key respondents and the participants described the major dairy problems on their area. Data was analyzed through descriptive statistics (frequency, percentage) using SPSS software. A total of 60 farmers were interviewed. Among them 92 % were male household farmers and the rest 8 % was women household farmers. Maximum farmland size own by the respondents of the study area was 1.5 ha. Moreover, 1.8ha and 0.28ha is the mean farmland and grazing land own by the respondents respectively. Farmers reported that cattle were first (46.6%) rank follow poultry (23.4 %) as importance livestock used. Most respondents (70%) first and foremost keep cattle for draft purpose followed by milk products (65.2%), selling live animals (3.5%) and lastly for manure (5.25%). About 42.9% of respondents keep their Cross breeds animals in the same house where they live (Not separated). Only 57.1% out of the total respondents had separate shelters for their Cross breed’s animals. However, 50% of the interviewer was reported keep for their local breed’s animals on the separate shelters. The principal feed resources available to livestock in the study area include crop-residue (31.9%), natural pasture (22.3%) and concentrates (17%). The most critical periods of feed shortage were summer, autumn and spring (80% 12% and 8%) respectively. Out of the sample size 18.5% of the respondents used Artificial insemination for mating, 77.5% of the respondents were used natural mating bull with cross breed blood and 4% of the respondents also used a combination of AI and cross breed bull. The overall average lactation lengths and milk yields per cow per day of local and crossbred cows were 4 and 7 months, 2.1 and 7liters respectively. Mastitis, anthrax, ticks and black leg are the most prevalent disease that attacks dairy cattle’s. The respondents reported that shortage of feed (50.6%), low pasture land productivity (34.2%), low animal productivity performance (15.8%), and Disease (17.3%) was the major dairy production constraints on the study area.