• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.18 no.9
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• pp.851-855
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• 2005

We investigated the unbalanced characteristics of the superconducting fault current limiters (SFCLs) based on YBCO thin films with a single line-to-ground fault. When a single line-to-ground fault occurred, the short circuit current of a fault phase increased about 6 times of transport currents after the fault onset but was effectively limited to the designed current level within 2 ms by the resistance development of the SFCL. The fault currents of the sound phases almost did not change because of their direct grounding system. The unbalanced rates of a fault phase were distributed from 6.4 to 1.4. It was found that the unbalanced rates of currents were noticeably improved within one cycle after the fault onset. We calculated the zero phase currents for a single line-to-ground fault using the balanced component analysis. The positive sequence resistance was reduced remarkably right after the fault onset but eventually approached the balanced positive resistance component prior to the system fault. This means that the system reaches almost the three-phase balanced state in about 60 ms after the fault onset at the three-phase system.

• Biomolecules & Therapeutics
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• v.30 no.4
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• pp.309-319
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• 2022

Metabolic bone diseases are serious health issues worldwide, since several million individuals over the age of 50 are at risk of bone damage and should be worried about their bone health. One in every two women and one in every four men will break a bone during their lifetime due to a metabolic bone disease. Early detection, raising bone health awareness, and maintaining a balanced healthy diet may reduce the risk of skeletal fractures caused by metabolic bone diseases. This review compiles information on the most common metabolic bone diseases (osteoporosis, primary hyperparathyroidism, osteomalacia, and fluorosis disease) seen in the global population, including their symptoms, mechanisms, and causes, as well as discussing their prevention and the development of new drugs for treatment. A large amount of research literature suggests that balanced nutrition and balanced periodic supplementation of calcium, phosphate, and vitamin D can improve re-absorption and the regrowth of bones, and inhibit the formation of skeletal fractures, except in the case of hereditary bone diseases. Meanwhile, new and improved drug formulations, such as raloxifene, teriparatide, sclerostin, denosumab, and abaloparatide, have been successfully developed and administered as treatments for metabolic bone diseases, while others (romososumab and odanacatib) are in various stages of clinical trials.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.35-47
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• 2014

With the qualitative methods for casino-related policy analysis on sense of residents, the degrees of expectation, support, adequacy, awareness, participation, contribution, and benefit which were derived from results are as follows: Firstly, from the recognition analysis on casino related policy, recognition III ranked at the top, and benefit and contribution II followed next. From the result, promotion policy on closed mine area fell short of expectations. The second phase of development project and appropriate the dead-mine development fund for promotion of substitute industry by the needs of residents. Secondly, derived from the comparative evaluation of casino-related industry, all comparison targets ; awareness of promoting policy and contribution to regional development, participation and contribution to Regional development, benefits and contribution to regional development, participation in the closed-mine area and contribution to regional balanced development, and lastly benefits and regional balanced development) are related to each other.

• Journal of the Korean Society of Food Culture
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• v.11 no.3
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• pp.349-357
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• 1996

Infanthood is a crucial period when mental and emotional developments take place along with physical growth. Adequate supply of nutrition is essential during this period and there is an urgent need for proper education and guidance on balanced nutrition. Therefore, this study tried to set the direction for developing baby food by investigating the conditions of weaning status and mothers perspectives on weaning. According to the result of this study, the average period when interviewees began weaning of their infants is 4.1 months and finishing period of weaning is 14.2 months on average. The frequency of consuming commercial weaning food is once a week. As high as 88.4% and the fruit juice was mainly used as the starting weaning food. The consumtion rate, more than once a day, is as high as 60%, they use commercial weaning food for convenience, especially when they are out. The 65% of surveyed group show rather dissatisfactory view about the commercial weaning food, and wanted improvements and changes. Interviewees wanted to obtain the information on baby food sold in the market and how to prepare baby food through technical literatures, and they frequently relied on commercial baby food due to its convenience. The most desired type of baby food was semi-solid paste in a disposable package that can be stored at room temperature.

• Journal of the Ergonomics Society of Korea
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• v.27 no.2
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• pp.25-37
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• 2008

The purpose of this research is to understand the physiological characteristics of muscular men between the ages of 20 and 34 years who are distinct from the general population due to their muscular development, and to categorize them according to upper body somatotypes. This research was conducted in order to provide basic data necessary for developing clothing products for muscular men. The research method and results were as follows: the "Sheldon's" and "Heath-Carter" somatotype classification methods were carried out at sports centers, the Athletic College, and military bases in Seoul and Gyeonggi province. Excluding the 32 subjects that did not have a balanced mesomorph, ectomorphic mesomorph or mesomorph-ectomorph, research on the remaining 168 subjects was used in the data analysis. 2. We used the following factor analysis: factor 1 for torso size; factor 2 for upper-arm, armpit, and chest breath size; and 3. The upper body was categorized into four (4) types, and their individual characteristics were as follows: Type 1 had the most developed arms, shoulders, chest muscles, and the shortest height. These subjects had an average of 191 somatotype points and could be classified as a balanced mesomorph. The heights and the lengths of Type 2 were short. They had slim physical structures, averaged 182 somatype points, and could be classified as an ectomorphic mesomorph. somatotype points and were classified as a balanced mesomorph. The heights and the lengths of Type 4 were long. They had slim physical structures, averaged 164 somatotype points, and were classified as a balanced mesomorph-ectomorph. 4. After carrying out a discriminant analysis to validate the categories of muscular men's upper bodies, we concluded that our model had an accuracy rating of 98.1%.

• Health Policy and Management
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• v.16 no.3
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• pp.52-69
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• 2006

Researchers indicates several issues as to performance evaluation methods for public health centers. Firstly, health centers are passively involved in the evaluation process, the performance indicators are activity-oriented, and mostly unrealistic. Balanced Scorecard is one of the methods for evaluating organizational performance, which is utilized at current in many industries including public sector. The purposes of this study is to apply balanced scorecard approach to a public health center and to develop performance indicators as well as their vision and strategies. For developing performance indicators, researchers selected K City Public Health Center and implemented brainstorming with members of health promotion team. Through team process they suggested goals, strategies and several indicators they considered proper to accomplish their shared vision. And then appropriateness of the indicators were evaluated by professional researchers in health promotion field for consensus building by email questionnaire. Based on survey and professional consensus meeting, 11 performance indicators were tailored in four perspectives as well as 6 strategies and 10 strategic goals, which are steps for accomplishing shared vision of health promotion team. For details, refer to the paper. Most members of health promotion team were satisfied with the indicators. However issues such as low level of recognition and familiarity with a new concept of BSC, and cultural resistance to strategic approach in public organizations should be addressed for future application and dissemination of BSC technique to public health organizations.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.27-34
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• 2002

Utilizing information and knowledge is one of the major objectives in the management of construction firm. This trend has been developed both inside of the firms and overall industry-wise. Therefore conventional methods of performance evaluation based on the financial statements such as balance sheet under GAAP(Generally Accepted Accounting Principles) are not sufficient to cover various Performance of constriction firms. Core competency of construction firms needs to be evaluated by the new performance evaluation model. In this research, the concept of BSC (Balanced Score Cards) is utilized to develop the performance evaluation model for construction firms considering four major performance indicators including financial perspective, customer perspective, learn and growth perspective, anti internal business perspective. A model of performance evaluation including criteria is proposed to evaluate construction firms based on their vision and strategy.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.533-563
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• 2016

The aim of this study is to develop a plan for university library evaluation with factors and their systems, and an evaluation process, based on the Korean University Library Promotion Act. This study adopts a consensus based method including open-ended interviews with various stakeholders around university libraries, a questionnaire survey, a public hearing, and numerous discussions with the stakeholders. Balanced Scorecard is adopted as a basic framework for the development of evaluation system, provides a balanced perspective on the whole aspects in the university library management, including factors and performances in the management, The proposed plan in this study is expected to help to examine whether the resources are used for reaching the goals in the libraries, and to contribute the growth of the university libraries.

• The Transactions of the Korean Institute of Power Electronics
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• v.18 no.1
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• pp.72-83
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• 2013

The paper proposes a new multilevel variable output voltage AC/DC Converter for power supply of power amplifiers used in underwater acoustic sensors. The proposed multilevel variable output voltage AC/DC Converter is composed of two parts. One as the input section is the high efficiency phase-shifted PWM full bridge DC-DC converter to get multiport power sources. The other as the output section is composed of two flying-capacitor 3-level DC-DC converters and a diode bridge circuit to get fast-response and multilevel variable output voltage for an envelope amplifier. Also the paper suggests the detailed circuit topology and design guideline of multilevel variable output voltage AC/DC converter. It also proposes the power balanced control method between 3-level converters and the voltage balanced algorithm for flying capacitors. Its characteristics should be verified by the detailed simulation results. It is anticipated that the proposed converter will be used very well for power amplifiers used in underwater acoustic sensors.

• Journal of the Korea Society of Computer and Information
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• v.17 no.6
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• pp.191-199
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• 2012

By the way, in light of the knowledge, even public institutions are paying much attention to the management of IT assets for achieving organizational goals. Recently, some public institutions adopt balanced scorecard for enhancing efficiency in operations and management of total administrations. To be interested, some key performance indicators(KPI) of the balanced scorecard reflect the three aspects of IT assets and their possible outcomes. The main focus of this study is to investigate whether there is positive effects of IT asset management through balanced scorecard at public institutions. Specifically, we selected and classified KPIs into different categories depending on three aspects of IT assets, internal process change, and organizational outcomes. To address relationships of KPIs among the categories, we specified each category and developed as a variable respectively. A middle-sized city provided us with 138 KPIs for the development of scales.