• Journal of the Korean Data and Information Science Society
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• 제21권2호
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• pp.317-325
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• 2010

In this paper, we develop four modified empirical distribution function (EDF) type tests using approximate maximum likelihood estimators for the half-logistic distribution based on multiply Type-II censored samples. We also propose modified normalize sample Lorenz curve polt and new test statistics. We compare the above test statistics in the sense of the power for various censored samples. We present an example to illustrate this method.

• 한국사회복지학
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• 제47권
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• pp.243-271
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• 2001

This study examines family relationship among North Korean migrant families in early adaptation (approximately, up to $5{\sim}6$ years after arrival in the South). Family cohesion, communication, power relationship, and conflicts and domestic violence among family members were examined by the perceptions of 67 male and female householders and their spouses. In the four areas of family relationship, the subjects have quite positive perceptions and shows no critically significant difference on the perceptions between before and after arrival. However, positive perception on family relationship gradually decreases as the length of time of in the South increases with linear or nonlinear patterns according to subcategories of family relationship. These findings suggest several social work practice implications in resettlement assistance for the North Korean migrant families.

• 산업경영시스템학회지
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• 제28권1호
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• pp.32-40
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• 2005

This study was limited Gangwon-do's manufacturing companies that participated in the educational-industrial consortium. These companies' present status and activities under implementation identified and interpreted by this study, therefore, are insufficient to be generalized into knowledge applicable to most of the companies in Gangwon-do. For more precise and detailed results, it is suggested to make further studies that cover not only those consortium companies but also non-consortium manufacturing companies in Gangwon-do. The results also suggest that it is necessary to promote some periodic manpower training programs in cooperation with local universities, to utilize professors and experts to build management strategies that can bring and secure the power of competition, and to construct a system of educational-industrial cooperation, as ways leading these companies to the 21 st century's type of business enterprise.

• 한국정보시스템학회지:정보시스템연구
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• 제15권4호
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• pp.225-245
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• 2006

RFID(Radio Frequency IDentification) systems is a wireless frequency recognition technology that can be used to recognize, trace and identify people, things and animals using RFID. Recently, RFID systems have emerged as new forms of interorganizational systems(IOS). Because of their capability for real-time identification and tacking over large distances, some believe that RFID systems will fundamentally change the my companies do business. The purpose of this study is empirically examined RFID systems adoption for u-business. To achieve this purposes, we were collected 72 questionnaires from Korean companies. In this study, RFID systems adoption was influenced by top management support, information systems maturity, competitive pressure, trust perceived advantage of u-business, compatibility of RFID tag. However, firm size, cost exercised power, did not affect significantly on RFID systems adoption. In the conclusion, study's limitations md implications treated.

• Journal of international Conference on Electrical Machines and Systems
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• 제2권2호
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• pp.239-245
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• 2013

Modern electric controlled valves are demanded that its solenoid actuator should be smaller size, lighter weight, lower consumption power, and higher response time. For achieving these purposes, the major design factors of solenoid actuator such as magnetic flux density, coil turn numbers, plunger size, bobbin dimension, and etc. are must be optimized. In this study, for optimal design of high speed solenoid actuator for hydraulic servo valve operation, we draw up governing equations which are composed by combination of electromagnetic theories and empirical knowledge, and deduct the values of major design factors by use of them. For more increase the operating speed, voice coil are used as main armature in manufacturing of prototype actuator. And, we have proven the propriety of the governing equations and speed increasing method by experiments using the hydraulic valve assembly adopted the prototype of solenoid actuator.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2003년도 춘계학술대회
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• pp.255-263
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• 2003

The drug industry of China is faster than before, so it will rank 5$^{th}$ at world-wide markets in 2010. This is because of expansion of purchase power on increase in economic growth, extended human life expectancy. As it is entered the WTO in January 2002, it will positively affect on export of Korea for China. This paper focuses on the analysis of export increase caused by reduction of custom tariff in China. The time schedule on average reduction of custom tariff is 15% in 2000, 10% in 2005, 5% in 2010. As the empirical test, it presents 8.48% export increase rate for China of Korea on reduction of custom tariff.

• 한국자동차공학회논문집
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• 제9권3호
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• pp.35-41
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• 2001

In recent applications, map controlled thermostat has been adapted to optimize engine cooling system and vehicle cooling system. First of all, this strategy is focused on improving fuel consumption rate and reducing emissions, especially unburned hydrocarbon. The object can be obtained through controlling engine metal temperature by varying engine coolant temperature with engine load and speed. To achieve this goal, it is necessary to understand the characteristics of engine metal temperature and heat rejection rate to coolant. From the results of tested engines, it is obvious that fuel consumption rate has more dominant effect on engine metal temperatures than the corresponding engine power does. Also, Re-Nu relation which shows heat rejection rate to coolant in function of air-fuel mixture and engine specifications has been studied. Also, the empirical Re-Nu relation at full loaded engine was developed.

• 산업공학
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• 제13권4호
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• pp.751-758
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• 2000

Situation awareness is defined as a person's perception of the elements of the environment within a volume of time and space, the comprehension of their meaning and the projection of their status in the near future. Situation awareness is important in attempting to evaluate human behavior in operating complex systems such as aircraft, air traffic control, and nuclear power plant systems. From the literatures this study reviews the relationship between situation awareness and numerous individual, system and environmental factors, and also reviews the methodologies for the empirical measurement of situation awareness applicable to Korea Next Generation Reactor (KNGR) design project. Attention, working memory, workload, stress, system complexity, and automation are presented as critical factors limiting operator's situation awareness. Mental models and goal-directed behavior are hypothesized as important mechanisms overcoming these limits. This study summarized hypothesized guidelines for interface design to improve situation awareness of reactor operators. Some of the guidelines should be tested in the KNGR evaluation experiments in the future.

• 한국의류학회지
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• 제27권6호
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• pp.725-734
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• 2003

Fashion Marketing is gaining more importance as Korean apparel industry undergoes ever-increasing competition and consumer power. As a result, Fashion marketing education come to play a more significant role in university level. This empirical research aims to compare fashion marketing education between Korea and Japan, owing to mail survey to university professors in both countries, regarding educational conditions, methods and performance. The results show that Korean education overall dominates Japanese one in terms of educational methods and performance. But Korea lies behind Japan in some educational conditions, such as class size, industry-university cooperation and age structure of professors, which needs to be improved.

• 디지털산업정보학회논문지
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• 제9권4호
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• pp.227-238
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• 2013

Although several studies show close relationships between social capitals and their performances, a little is known about specific social capitals and their effects on organizational culture and behaviour leading to their innovative outcomes within small and medium sized enterprises(: SMEs). This study examines some dimensions of social capitals and their influences on creating innovative culture and employees' behaviour. The importance of these are regarded as an imperative for SMEs to overcome the inequality of financial leverage and competitive power over resources. For the empirical analysis, survey data were collected from 51 domestic SMEs and analyzed by partial least squares(: PLS) that is one of popular structural modeling and multi-variate projection techniques to latent variables. The findings confirm a positive support of social capitals and their influences on the innovative culture and bahaviour. This result implies that managing the capability of social capitals is important for SMEs to develop the innovative culture and bahaviour and create a competitive advantage.