จำนวน Repository ( 3611 )

เทคนิคการจัดเรียงสายป้อนและการกำหนดตำแหน่งตัวเก็บประจุในระบบจำหน่ายไฟฟ้าเพื่อทำให้ค่าดัชนีโหลดสมดุลต่ำสุด
เทคนิคการจัดเรียงสายป้อนและการกำหนดตำแหน่งตัวเก็บประจุในระบบจำหน่ายไฟฟ้าเพื่อทำให้ค่าดัชนีโหลดสมดุลต่ำสุด

This paper presents an efficient algorithm for optimization of radial distribution systems by a feeder reconfiguration to balance feeder loads and eliminate overload conditions. The system load-balancing index is used to determine the loading conditions of the system and maximum system loading capacity. The index value has to be minimum in the optimal feeder reconfiguration of load balancing. A method based on Tabu search algorithm The Tabu search algorithm is employed to search for the optimal feeder reconfiguration. Simulation results for a radial 69-bus system with reconfiguration and capacitors placement. The study results show that the distribution system with capacitor placement and optimal on/off patterns of the switches feeders reconfiguration can be load balancing in distribution systems.

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ปัจจัยที่มีผลต่อการบริโภคชานมไข่มุก กรณีศึกษาร้าน tea more
ปัจจัยที่มีผลต่อการบริโภคชานมไข่มุก กรณีศึกษาร้าน tea more

The purpose is to study the factors that affect the population of the marketing mix consumer pearl milk tea: Tea More case study to compare the effect of the marketing mix of consumers. The sample used in this study include pearl milk tea: Tea More Case Study which has a branch located in the Sukhumvit area. Bangkok The storage From the sample of use services at Pearl Milk Tea More 400 using statistics to analyze the data including the frequency of the Mean ( X ) the standard deviation ( . .DS ) and inferential statistics by analyzing the one-way ANOVA using statistical t-Test F-Test and crossover frequency distribution table. (Cross-tabulation) analysis conclusion. 1. Analysis respondents. Most are male aged 21-30 years with a single level of undergraduate studies. The average monthly income of less than 15000 baht a career and most other states including student groups. 2. Analysis of factors affecting the personal consumption pearl milk tea: Tea More Case Study found that gender age education level age and different opinions on products pricing channel distribution locations. the field of marketing is different except for the age difference. As a result the products factor Price Channel Promotion and marketing is no different. 3. Behavior Analysis found that female consumers pearl milk tea pearls consumption than men. And those aged less than 20 years of education than a bachelors degree. And those earning more than 55000 baht to consume more than six cups a week. Most are intended for consumption. Preference in the product and the taste which over time with most consumers and the afternoon. For products that are of interest most consumers. Including traditional milk And the toppings are a consumer favorite pearls. The person influencing the consumption of milk pearls are very self. Subsequent research suggested that there should be a comparison of the goods or services which are similar to features. Cons of goods and services The obvious question should be added to the comprehensive control.

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ความเป็นพิษร่วมกันระหว่างพอลิไซคลิกอะโรมาติกไฮโดรคาร์บอนกับไทรทรอนเอ็กซ์-100 หรือทวีน 80 ต่อการเจริญเติบโตระยะต้นกล้าของบานเย็นและกระเจี๊ยบเขียว
ความเป็นพิษร่วมกันระหว่างพอลิไซคลิกอะโรมาติกไฮโดรคาร์บอนกับไทรทรอนเอ็กซ์-100 หรือทวีน 80 ต่อการเจริญเติบโตระยะต้นกล้าของบานเย็นและกระเจี๊ยบเขียว

Use of synthetic surfactant is another choice to increase efficiency of polycyclic aromatic hydrocarbon (PAH) phytoremediation in soil. In this study the toxicity of soil contaminated with anthracene and fluoranthene at total concentration as 0 200 and 800 mg/kg in combination with 2 synthetic surfactants that were triton x-100 and tween 80 at concentration as 0 1 and 10 times of critical micelle concentration (CMC) on seedling growth of Hibiscus sabdariffa and Mirabilis jalapa. Both synthetic surfactants were watered separately on day 13 after inoculation and seedling growth were measured on day 20 after inoculation. The result shown that both H. sabdariffa and M. jalapa could grow in soil contaminated with anthracene and fluoranthene at all concentrations in combination with both synthetic surfactants. Tween 80 at 1 time of CMC were the least toxic to H. sabdariffa while toxicity of all surfactants on M. jalapa were not different. Decrease of plant growth depended on the increasing of PAH concentration in soil. With these reasons both plants were possible to use for PAH phytoremediation at total concentration 200 mg/kg in combination with synthetic surfactant

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อิทธิพลของภาวะผู้นำการเปลี่ยนแปลง และรูปแบบการสื่อสาร ที่มีต่อการทางานเป็นทีมของพนักงานสายงานวิชาการ บริษัท อักษรเจริญทัศน์ อจท. จากัด
อิทธิพลของภาวะผู้นำการเปลี่ยนแปลง และรูปแบบการสื่อสาร ที่มีต่อการทางานเป็นทีมของพนักงานสายงานวิชาการ บริษัท อักษรเจริญทัศน์ อจท. จากัด

This research was aimed to 1) study the influence of transformational leadership and 2) to investigate the communication styles towards teamwork of academic employees at Aksorn Charoenthat Company Limited. This is descriptive research collecting data through a questionnaire constructed from reviewing relevant documents. 142 Aksorn Charoenthat Company Limited employees responded to the five-scale questionnaire divided into 4 parts with the total of 52 items. The collected data were statistically analyzed by percentage mean (μ) standard deviation (σ 2) multiple regression analysis to test multiple linear regression and Pearson Correlation Coefficients. The results of the hypothesis test on the influence of transformational leadership and communication styles towards teamwork of academic employees at Aksorn Charoenthat Company Limited showed that (1) the correlation coefficient analysis between the leadership and the teamwork were positively related and statistically significant at .01 level; (2) the correlation coefficient analysis between the communication styles with the teamwork of Aksorn Charoenthat Company Limited employees was positively and statistically significant at .01; and (3) the transformational leadership and communication styles influenced the teamwork of Aksorn Charoenthat Company Limited employees statistically significant at .05 (R = .724) and (R = .668).

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การลดสัญญาณรบกวนคลื่นแม่เหล็กไฟฟ้าจากอุปกรณ์ขับหลอดแอลอีดี
การลดสัญญาณรบกวนคลื่นแม่เหล็กไฟฟ้าจากอุปกรณ์ขับหลอดแอลอีดี

This paper presents the method to reduced electromagnetic interference from electronic drive for LED lamp to achieve the TIS standard No.1955-2551. According to standard it must have been tested for magnetic field compatibility that are included Magnetic Field Emission: ME Conducted Emission: CE and Coupling Decoupling Network: CDN. The 3 LED lamp which defined as Type A B and C were tested. Each lamps has 16 watt electric power and was different electromagnetic interference of electronic drive. After that the reduce electromagnetic interference circuit has been designed for low frequency. This circuit test was based on Conducted Emission test only. The integrated design was preferable to reduces electromagnetic interference for LED lamp drive device type A to the TIS. standard No. 1955-2551. That design circuit was been trialled in LED lamp drive device type B and C in order monitor efficiency of reduce electromagnetic Interference. The results showed that design circuit can reduce electromagnetic interference from LED lamp drive device type A and B to the standard. For LED lamp drive device types C the design circuit can reduce electromagnetic interference but it still has not achieve the standard.

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