Loss Minimization of Power Distribution Network using Different Types of Distributed Generation Unit

A Radial Distribution network is important in power system area because of its simple design and reduced cost. Reduction of system losses and improvement of voltage profile is one of the key aspects in power system operation. Distributed generators are beneficial in reducing losses effectively in distribution systems as compared to other methods of loss reduction. Sizing and location of DG sources places an important role in reducing losses in distribution network. Four types of DG are considered in this paper with one DG installed for minimize the total real and reactive power losses. The objective of this methodology is to calculate size and to identify the corresponding optimum location for DG placement for minimizing the total real and reactive power losses and to improve voltage profile   in primary distribution system. It can obtain maximum loss reduction for each of four types of optimally placed DGs. Optimal sizing of Distributed Generation can be calculated using exact loss formula and an efficient approach is used to determine the optimum location for Distributed Generation Placement.  To demonstrate the performance of the proposed approach 36-bus radial distribution system in Belin Substation in Myanmar was tested and validated with different sizes and the result was discussed

Effect of solid-solution ratio on anion adsorption on hydrous metal oxides

Master'sMASTER OF ENGINEERIN

金融危機

広島大学(Hiroshima University)博士(学術)Doctor of Philosophydoctora

Analysis on Band Layer Design and J-V characteristics of Zinc Oxide Based Junction Field Effect Transistor

This paper presents the band gap design and J-V characteristic curve of Zinc Oxide (ZnO) based on Junction Field Effect Transistor (JFET). The physical properties for analysis of semiconductor field effect transistor play a vital role in semiconductor measurements to obtain the high-performance devices. The main objective of this research is to design and analyse the band diagram design of semiconductor materials which are used for high performance junction field effect transistor. In this paper, the fundamental theory of semiconductors, the electrical properties analysis and bandgap design of materials for junction field effect transistor are described. Firstly, the energy bandgaps are performed based on the existing mathematical equations and the required parameters depending on the specified semiconductor material. Secondly, the J-V characteristic curves of semiconductor material are discussed in this paper. In order to achieve the current-voltage characteristic for specific junction field effect transistor, numerical values of each parameter which are included in analysis are defined and then these resultant values are predicted for the performance of junction field effect transistors. The computerized analyses have also mentioned in this paper

АДМИНИСТРАТИВНАЯ ПРЕЮДИЦИЯ КАК УСЛОВИЕ УГОЛОВНОЙ ОТВЕТСТВЕННОСТИ В НЕКОТОРЫХ СЛУЧАЯХ ПРИНУЖДЕНИЯ К ВЫПОЛНЕНИЮ ОБЯЗАТЕЛЬСТВ

Ant Colony Optimization (ACO) is a class ofheuristic search algorithms that have beensuccessfully applied to solving combinationaloptimization (CO) problems. The traveling salesmanproblem (TSP) is among the most importantcombinatorial problems. ACO has very good searchcapability for optimization problems. But it still hassome drawbacks such as stagnation behavior, longcomputational time, and premature convergenceproblem of the basic ACO algorithm on TSP. Thoseproblems will be more obvious when the complexitiesof the considered problems increase. The proposedsystem based on basic ACO algorithm based on wellpositionedthe ants on the initiation and informationentropy which is applied to tuning of the algorithm’sparameters. Then, ACO for TSP has been improvedby incorporating local optimization heuristic.Therefore, the proposed system intends to reachsuperior search performance over traditional ACOalgorithms do

Nasal Carriage of Staphylococcus aureus and its antibiotic susceptibility pattern among Medical and Nursing Students

Nasal carriage of Staphylococcus aureus (S.aureus) especially methicillin-resistant S. aureus (MRSA) among health care personnel poses a risk to the patient. Objectives: To determine the prevalence of nasal colonization of S. aureus and its antibiotic susceptibility pattern among pre-clinical and clinical medical and nursing students attending Faculty of Medicine and Health Sciences at the Universiti Malaysia Sabah. Materials and Methods: Between April and November 2013, nasal swabs were collected from anterior nares of 449 students and inoculated on Mannitol salt agar and Tryptone soya broth. Staphylase coagulase test kit and tube coagulase test were done for identification. Antibiotic susceptibility test was done on seven antibiotics by Kirby–Bauer method. S. aureus isolates which showed zone diameter of 22 mm to cefoxitin discs were further tested with Slidex® MRSA detection kit to detect penicillin-binding protein product of MRSA. Results: The prevalence of nasal colonization of S. aureus was 31.0% and all were methicillin susceptible S. aureus (MSSA). Antibiotic susceptibility testing revealed all 139 S. aureus isolates were sensitive to oxacillin, trimethoprim/sulfamethoxazole and cefoxitin, whereas 116 (83.5%), 1 (0.7%), 3 (2.2%) and 24 (17.3%) were resistant to penicillin, erythromycin, clindamycin and tetracycline, respectively. Conclusions: There was no MRSA among S. aureus isolated in this study. S. aureus isolates were highly resistance to penicillin, however, no resistant to oxacillin, co-trimoxazole, and cefoxiti

Perceived Barriers to Regular Class Attendance of BCommH Students in University of Community Health, Magway

Education is essential not only for every citizen to survive in dignity but also for nation building. In any education settings, students’ regular class attendance plays a vital role for obtaining good academic achievements. A cross-sectional analytic study was conducted among BCommH students (n=410) of University of Community Health, Magway from October to December 2017 using a mixed method with objectives of exploring their perceived barriers of regular class attendance and possible solutions. Data collected by pretested semi-structured questionnaires were entered into computers and analysed by SPSS software version 18.0 with a significant level of 0.05. Qualitative data were assessed by content analysis. Significant findings related to irregular class attendance were level of previous class [OR = 3.08 (95% CI: 1.6 – 5.91) (p < 0.005)], monthly financial aid from family of MMK 100,000 or more [OR = 2.24 (95% CI: 1.29 – 3.86) (p = 0.003)], travelling pattern to and from campus by other means [OR = 7.76 (95% CI: 2.13 – 28.21) (p < 0.005)] and lunch taking pattern in week days [OR = 1.91 (95% CI: 1.13 – 3.23) (p < 0.025)]. Among the perceived barriers most of students (82.2%) stated illness as a barrier followed by being busy with preparation for examinations (46.4%), getting up late from bed in the morning (41.1%) and lecture room with high indoor temperature (40.5%). In in-depth interviews, students mentioned the reasons of missing classes as weakness in teaching system, their socio-behavioral factors and poor class room conditions. In conclusion the present study unearthed the various perceived barriers and these barriers should be removed by appropriate means including intensive oversight of faculty and staff on the students, reinforced with introduction of time management concepts into curriculum and making teaching learning environment more friendly to and happy for students, leading to more regular attendance among the students finally to achieve their high academic grades