• 전기의세계
• /
• 제18권2호
• /
• pp.7-14
• /
• 1969

From the first customer located right at the substation to the last customer at the end of the line, voltage must be held within close limits, so the voltage regulation is more important than the thermal limit. On a typical distribution system during the peak load period, the voltage drop may be serious enough to cause unsatisfactory operation of home appliances in the residential area, and present many problems to manufacturing industries, where the voltage must be maintained within close limits to insure smooth operation. Among all the factors contributing to voltage drop in the distribution system, the voltage drop in the distribution transformer may account for 30% of this figure. If we can eliminate this factor, the power companies can provide better quality electricity to more customers with the existing distribution facilities, thus saving on initial investment costs. Taking all these problems into consideration, the author undertook the design of a capacitive transformer which would give zero voltage drop at rated load and at 80% lagging power factor while incorporating overload features to withstand 400% overload for at least 100 seconds. The following are the results obtained through design, manufacture and test of an initial experimental transformer built with these specific purposes.

• Asian Journal for Public Opinion Research
• /
• 제11권2호
• /
• pp.77-106
• /
• 2023

The DPP's victory over the KMT in Taiwan's 2020 elections has been interpreted as a triumph for anti-China sentiment. However, the rise of political outsiders and their influence on voting behavior in this election were overlooked and underestimated. In this article, we examined different sources of data and found that supporters of these political outsiders mentioned sovereignty and cross-Strait issues less than the incumbent Tsai Ing-wen. However, when faced with the choice between Tsai and challenger Han Kuo-yu, voters who were concerned about governance chose Tsai, contributing to her winning a record number of votes. This article suggests that economic and governance issues had a considerable role in the election's result and will probably be the main focus of the 2024 presidential election. With the potential for a conflict in the Taiwan Strait increasing, anti-China sentiment is unlikely to be the deciding factor this time around.

• 국제지역연구
• /
• 제15권3호
• /
• pp.191-213
• /
• 2011

본 연구는 소비위험분산 목적으로 실행된 소득위험분산이 실질적으로 소비위험분산에 기여할 수 있는지 여부를 실증분석을 통하여 검증한다. 국가 간 생산요소 이동에 따른 순요소소득의 발생은 국가 간 소득위험분산의 주요 수단 중 하나이다. 순요소소득 변화가 소비 변화에 미치는 영향과 GDP 변화가 소비 변화에 미치는 영향이 동일하다는 선행연구의 가정 하에서 국가 간 생산요소 이동을 통한 소득위험분산은 소비위험분산에 기여하는 것으로 여겨졌다. 1999년부터 2010년 기간 중 EU 12개 국가들의 사례를 통한 본 연구의 실증분석 결과 순요소소득에 대한 소비반응은 GDP에 대한 소비반응보다 낮으며, 더 나아가 순요소소득의 변화가 소비의 변화에 미치는 영향은 매우 낮은 것으로 나타났다. 따라서 순요소소득과 GDP 각각에 대한 소비반응이 동일하다는 기존 선행연구의 가정 하에서, 국가 간 생산요소 이동을 통한 소득위험분산의 소비위험분산에 대한 기여도는 과대평가되었음을 본 연구는 암시한다. 본 연구는 국가 간 생산요소 이동을 통한 소득위험분산이 실질적으로 소비위험분산에 기여하도록 하기 위해서는, 순요소소득이 소비에 유의하게 영향을 미칠 수 있어야함을 시사하며, 따라서 국외로부터의 순요소소득이 보다 직접적으로 소비로 귀결되기 위한 법제도 및 관련 시스템의 개선이 필요할 것이다.

• 농촌계획
• /
• 제27권3호
• /
• pp.35-46
• /
• 2021

Ecosystem services play a role in promoting sustainable development by contributing to human welfare. For sustainable development, a balance between supply and demand for ecosystem services must be made. In this regard, in this study, factor analysis was performed using the results of measuring ecosystem services for the supply of ecosystem services and national statistical data representing socio-economic factors for demand for ecosystem services The results of analysis for Gyeong-gi Province are as follows. The service supply based on the result of ecosystem services was divided into the mixed service provisioning as factor1, the food provisioning as factor2, and the P retention service provisioning area as factor3. As for the demand for services based on socio-economic factors, factor1 is divided into urbanized areas, factor2 is forest development area, and factor3 is agricultural activity development area. Local governments that maintain balance were evaluated as Pocheon, Yangpyeong, Icheon, Pyeongtaek, Goyang, Suwon, Gwangmyeong, and Osan, and imbalanced local governments appeared in Gimpo, Uiwang, Anseong, and Yeoju. A management plan to maintain the balance between supply and demand of ecosystem services was suggested. The analysis method and results of this study are expected to be applicable to various local governments through regional expansion.

• 대한인간공학회지
• /
• 제36권5호
• /
• pp.559-568
• /
• 2017

Objective: The aim of this study is to investigate the effective managerial factors influencing dose reduction of the nozzle dam installation and removal tasks ranking within top 3 in viewpoint of average collective dose of nuclear power plant maintenance job. Background: International Commission on Radiation Protection (ICRP) recommended to reduce unnecessary dose and to minimize the necessary dose on the participants of maintenance job in radiation fields. Method: Seven sessions of nozzle dam installation and removal task logs yielded a multiple regression model with collective dose as a dependent variable and work time, number of participants, space doses before and after shield as independent variables. From the sessions in which a significant reduction in collective dose occurred, the effective managerial factors were elicited. Results: Work time was the most important factor contributing to collective dose reduction of nozzle dam installation and removal task. Introduction of new technology in nozzle dam design or maintenance job is the most important factor for work time reduction. Conclusion: With extended task logs and big data processing technique, the more accurate prediction model illustrating the relationship between collective dose reduction and effective managerial factors would be developed. Application: The effective managerial factors will be useful to reduce collective dose of decommissioning tasks as well as regular preventive maintenance tasks for a nuclear power plant.

• 한국환경농학회지
• /
• 제13권2호
• /
• pp.209-215
• /
• 1994

Absorption, translocation, and metabolism of the herbicide alachlor in soybean, Chinese cabbage, and barnyard grass seedlings were examined and compared with each other using [phenyl-U-$^{14}C$] alachlor in search of a primary factor contributing to the selectivity of alachlor. When root of each seedling was immersed into the solution containing [$^{14}C$]alachlor, the amount of absorbed radioactivity/mg dry matter of seedling which was suggested to be correlated with the susceptibility of plants to alachlor decreased in the order of soybean ${\gg}$ Chinese cabbage ${\geq}$ barnyard grass and the rate of translocation to shoot was Chinese cabbage ${\geq}$ barnyard grass ${\gg}$ soybean. These orders did not consistently explain the selective phytotoxicity of alachlor. Analyses of extracts by reverse phase chromatography showed that alachlor was detoxified by conjugation with glutathione in all three plants and the rate of glutathione conjugation of soybean, the resistant species to alachlor, was the greatest, while that of barnyard grass, the susceptible, was the lowest among three plants. This result explained well the selective phytotoxicity of alachlor. Both absorption and translocation contribute undoubtedly to the selectivity by influencing the active internal concentration of alachlor. However, neither of them appeared to be a primary factor. It was concluded that the most important primary factor was the rate of glutathione conjugation, which detoxifies alachlor and plays an important role in selectivity.

• The Journal of Asian Finance, Economics and Business
• /
• 제2권3호
• /
• pp.5-15
• /
• 2015

This research paper has been attempted to inventory the atmospheric factors, contributing to better sales. Exploratory study was undertaken to identify various signs of store atmospherics variables that influence the buying behaviour of buyers. Thirty-four variables identified from this study were used to create a structured questionnaire. This questionnaire was then administered among shoppers in NCR Delhi using non-probability convenience sampling. To determine the atmospheric factors, Principal Component Analysis (PCA) along with Varimax Rotation was attempted. Using principal component factor analysis on the data collected, nine factors were identified to have impact on the store atmospheric. These were Querulous, Music, Sensitive, Budget Seeker, Sensuous, Light, Idler, Space seeker and Comfort Seeker. Contrary to the various earlier studies where music, space seeker and comfort seeker were considered to be most significant factors, light and querulous have emerged out to be the major factor that influences the store atmospheric. This study shows that customers are sensitive, space seekers and sensuous. Constituents of these factors reveal distinct patterns. This research may be used as guidelines for development and management of shopping malls in emerging countries. Retail marketers in India can take this cue in designing their strategies to attract consumers.

• 대한기관식도과학회지
• /
• 제17권2호
• /
• pp.98-103
• /
• 2011

Purpose Pulmonary complications continue to be the major cause of morbidity and mortality after esophageal resection. The aim of this study was to compare and analyze retrospectively the factors which effect for postoperative pulmonary complications in patients who underwent curative resection for esophageal cancer. Material and Method A total of 118 patients were enrolled in the study from January 1994 to March 2009, and patients with previous neoadjuvant chemotherapy or radiotherapy were excluded. Of the total 118 patients, 27 patients developed pulmonary complications within 30 days of their operation. the factors which effect for postoperative pulmonary complications were compared and analyzed. Results There were 7 patients in-hospital deaths. 51 patients (43.2%) developed complications, and of them, the most common complication was pulmonary complication and occurred in 27 patients (22.9%). In univariate analysis, diabetes mellitus, cervical anastomosis through the retrosternal route, old age and poor lung function were risk factors contributing to postoperative pulmonary complications (p<0.05). In multivariate analysis, statistically significant factor was old age (65 years or older). Conclusion Clinical factor for the pulmonary complications after esophagectomy of esophageal cancer was significantly associated with diabetes mellitus, cervical anastomosis through the retrosternal route, old age (65 years or older) and poor lung function (FEV1<80%). Of these, old age was the most significant factor.

• Journal of Korean Society for Atmospheric Environment
• /
• 제10권E호
• /
• pp.343-356
• /
• 1994

In this study, a statistical investigation was carried out for the evaluation of any relationship between polycyclic aromatic hydrocarbons (PAHss) associated with ambient aerosols and other air quality parameters under varying meteorological conditions. Daily measurements for PAHs and air quality/meteorological parameters were selected from a data-base constructed by a comprehensive air monitoring in London during 1985-1987. Correlation coefficients were calculated to examine any significant relationship between the PAHs and other individual variables. Statistical analysis was further Performed for the air quality/meteorological data set using a principal component analysis to derive important factors inherent in the interactions among the variables. A total of six components were identified, representing vehicle emission, photochemical activity/volatilization, space heating, atmospheric humidity, atmospheric stability, and wet deposition. It was found from a stepwise multiple regression analysis that the vehicle emission component is overall the most important factor contributing to the variability of PAHs concentrations at the monitoring site. The photochemical activity/volatilzation component appeared to be also an important factor particularly for the lower molecular weight PAHs. In general, the space heating component was found to be next important factor, while the contributions of other three components to the variance of each PAHs did not appear to be as much important as the first three components in most cases. However, a consistency for these components in their negative correlations with PAHs data was found, indicating their roles in the depletion of PAHs concentrations in the urban atmosphere.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권11호
• /
• pp.1033-1039
• /
• 2020

Vietnam is conducting an export-led growth model and labour-intensive industries contributing majorly to the total export value. In the context of Industry 4.0, the labour-based industries are significantly affected; hence, enhancing productivity is the key measure to maintain these industries. The garment industry contributes significantly to the total export value of Vietnam. Based on meta-frontier framework, the approach of data envelopment analysis is used to measure technical efficiency of Vietnamese garment firms and the global Malmquist TFP index is utilised to identify productivity change and its components including efficiency, technology and technical gaps between different groups of firms. The data of Vietnamese garment firms from 2013 to 2018 collected from the Vietnam General Statistic Office is used in this study. The results show that: (i) The total factor productivity of Vietnamese garment firms growth, technical progress is the main contributor; (ii) The private garment sector is the leading group; (iii) There is a large technological gap among Vietnamese garment sectors. The private and FDI garment firms have experienced a growth in all components of total factor productivity change. Meanwhile, technological progress change is the main reason to constrain the productivity growth of state-owned garment firms.