• 한국산업정보학회논문지
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• 제10권2호
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• pp.21-25
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• 2005

본 연구는 인간의 정신부하작업중 반응시간이 제한된 긴급상황에서 시스템이 비정상적인 상태로 변화할 경우 인간의 수행도 특성을 살펴보고 이를 보조할 수 있는 보조장치의 설계에 도움을 주는 기준 안을 제시하고자 한다. 긴급상황에서 최우선시 되는 수행도는 반응시간보다는 시스템을 성공적으로 제어하여 비극적인 재해를 방지하는 일이다. 그러므로 여러 작업 수행도들 중에서 제어에 실패하게 되는 요인의 영향도를 알아내는 것이 중요하다. 실험결과 인간의 반응은 극히 제한된 짧은 반응시간내의 단일작업에서의 수행도는 시스템의 전체 영향도를 제대로 반영하지 못함을 알 수 있었다. 이럴 경우 부수작업을 부여했을 때 시스템의 변화 요인의 영향도를 더욱 잘 나타내는 것임을 유도하였다. 그러므로 시스템의 상황이 비 정상적인 상태로 진행될 경우, 특히 이러한 상황에서 반응해야 할 시간이 제한적일 경우 수행도 측정에는 다양한 형태의 부수작업을 개발하고 이를 이용한 측정이 더욱 효율이 있다는 점을 제시한다. 이러한 실험의 결과를 유추해보면 안전장치 기기의 설계를 위해서는 운용되는 상황에 맞는 측정방법이 개발되어야 긴급 상황의 수행도를 측정할 수 있다.

• Journal of Nutrition and Health
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• 제26권5호
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• pp.593-602
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• 1993

As part of the Nutrition CRSP Mexico project conducted in rural villages in highland Mexico, this study examined whether nutritional factors, family characteristics, and the duration of schooling were associated with cognitive performances in 107 schoolers(53 boys and 54 girls) aged 8~10. Food intake was measured by recall, direct observation and weighment twice monthly over the course of a year. Families were characterized in terms of socioeconomic status and parental cognitive performance, education and aspiration. Dietary quality, but not energy intake, and anthropometry (wt-for-age, ht-for-age, head circumference) were significantly associated with cognitive test results for both verbal and performance measures. When the effect of SES is controlled using partial correlation, the relationships were substantially weakened. Sex differences were also found in response to nutritional deprivation. Among boys, dietary quality was the most important indicator of cognitive performance, while household economic conditions were more importantly associated with cognitive performance among girls. Participation in schooling was important for cognitive skille as it related to nutritional status.

• 한국세라믹학회지
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• 제47권1호
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• pp.1-7
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• 2010

Solid oxide fuel cells (SOFCs) have been under development for a variety of power generation applications. Power system sizes considered range from small watt-size units (e.g., 50-W portable devices) to very large multi-megawatt systems (e.g., 500-MW base load power plants). Because of the reversibility of its operation, the SOFC has also been developed to operate under reverse or electrolysis mode for hydrogen production from steam (In this case, the cell is referred to as solid oxide electrolysis cell or SOEC.). Potential applications for the SOEC include on-site and large-scale hydrogen production. One critical requirement for practical uses of these systems is long-term performance stability under specified operating conditions. Intrinsic material properties and operating environments can have significant effects on cell performance stability, thus performance degradation rate. This paper discusses potential applications of the SOFC/SOEC, technological status and current research and development (R&D) direction, and certain aspects of long-term performance degradation in the operation of SOFCs/SOECs for power generation/hydrogen production.

• 한국의사학회지
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• 제33권2호
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• pp.9-21
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• 2020

To analyze current status of CPX in colleges of Traditional Korean Medicine nationwide and investigate the operations required for its development and distribution, we investigate current status of CPX in the nationwide colleges of Traditional Korean Medicine and suggest an improvement plan. A total of 7 colleges (graduate schools) performed CPX using the standardized patients as of July 2020 out of 13 colleges (graduate schools). Because there are a significant number of CPX modules developed by the colleges of Traditional Korean Medicine, a wide array of characteristics of Traditional Korean Medicine are covered, based on the literatures of Traditional Korean medicine. The scope of Clinical Presentation should established and a CPX module should be standardized to expand and distribute CPX in the education of Traditional Korean Medicine. If multiple colleges collect, train and manage the standardized patients in cooperation, CPX could be performed more effectively. Furthermore, medical clinical performance guide for Traditional Korean Medicine should be developed in cooperation. Greater support in the form of manpower, finance, and administration are required to distribute CPX to all colleges and develop various CPX modules.

• 한국정보처리학회논문지
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• 제5권1호
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• pp.24-32
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• 1998

버스기반 공유메모리-다중프로세서는 공유버스의 사용으로 인한 병목 현상이 시스템의 성능을 제한하며, 특히 분리형 트랜잭션 환경 하에서 각 프로세서들로부터 생성되는 메모리 접근에 대한 요청의 일부가 불필요하게 메모리 입력 버퍼에 대기함으로써 시스템의 성능을 저하시킨다. 이와 같은 불필요한 메모리 입력버퍼에서의 대기는 각 블록에 대한 상태정보를 이용함으로써 제거될 수 있지만, 메모리의 각 블록에 대하여 상태정보가 완전 사상된 비트맵테이블을 저장하기 위한 SRAM에 대한 부담이 발생되었다. 본 연구에서는 이와 같은 문제점을 해결하기 위하여 비공유부분의 배제와 참조 국부성의 원리를 적용하여 상태정보를 저장하기 위한 SRAM의 용량을 줄이기를 제안한다. 시뮬레이션 결과에 의하면 시스템의 성능에는 거의 영향을 미치지 않으면서 상태정보의 저장 용량을 줄일 수 있어 가격-대-성능의 향상을 도모할 수 있다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제5권6호
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• pp.793-800
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• 1999

TMN Agent Platform은 망 요소의 운영상태와 자원들을 GDMO에 따라 관리객체(Managed Object : MO)로 모델링 하고, 자원들의 현재 상태를 유지하며, 관리자(Manager)로부터의 망 관리 기능 요구에 따라 조작된다. 그러므로, 에이전트의 성능향상은 전체적인 통신망 관리의 성능향상에 직접적인 영향을 미친다.본 논문에서는 TMN 에이전트의 기능요구 사항을 분석하고, 이를 토대로 성능향상을 위해 멀티스레드 기법을 사용하는 병렬 처리 구조의 TMN Agent Platform의 기능구조를 제시한다. 또한 에이전트와 다양한 자원들간의 효율적인 메시지전달을 위한 체계를 제시하며, 구현된 TMN Agent Platform의 성능을 분석한다.Abstract TMN Agent manages the operational status and real-resources of network elements, such as switching nodes and transmission systems. It performs the requested management functions from manager and maintains consistent status data of real-resource. The performance of agent system affects directly the performance of network management operation. If the agent is implemented by sequential processing scheme with single process, the agent processing can be delayed or blocked according to the status of real-resources. This problem can be solved by parallel and distributed processing scheme.To improve the processing performance of TMN Agent, we propose a TMN Agent Platform's functional architecture that is based on parallel processing with multi-tread and effective message transferring scheme between agent and various real-resource. We analyze the performance of the implemented TMN Agent Platform.

• 지역사회간호학회지
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• 제21권4호
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• pp.448-457
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• 2010

Purpose: This study attempted to identify differences in elders' health status, quality of life, and satisfaction with customized home visiting health service depending on connection to volunteerism. Methods: A total of 400 subjects participated in this research. Data were collected from May to August of 2009 and the measurement tool used for this study was the house visiting health service recording sheet recommended by the Ministry of Health. Results: According to the results of this research on elders' health status in customized home visiting health service depending on connection to volunteerism, elders' connected to volunteerism positively showed a high level in functional health status areas such as daily life performance ability, instrumental daily life performance ability and Joint exercise capacity, and in the quality of life area. Conclusion: The results of this study can be utilized as complementary information when resources and networks are used for the effective management of house visiting health service subjects.

• 한국인공지능학회지
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• 제6권2호
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• pp.23-27
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• 2018

Korea has a high proportion of self-employment. Many of them start the food business since it does not require high-techs and it is possible to start the business relatively easily compared to many others in business categories. However, the closure rate of the business is also high due to excessive competition and market saturation. Cafés and restaurants are examples of food business where the business analysis is highly important. However, for most of the people who want to start their own business, it is difficult to conduct systematic business analysis such as trade area analysis or to find information for business analysis. Therefore, in this paper, we predicted business status with simple information using Microsoft Azure Machine Learning Studio program. Experimental results showed higher performance than the number of attributes, and it is expected that this artificial intelligence model will be helpful to those who are self-employed because it can easily predict the business status. The results showed that the overall accuracy was over 60 % and the performance was high compared to the number of attributes. If this model is used, those who prepare for self-employment who are not experts in the business analysis will be able to predict the business status of stores in Seoul with simple attributes.

• 대한가정학회지
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• 제27권1호
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• pp.47-58
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• 1989

This study was undertaken to investigate whether the stress caused by day/night shifts on industrial workers can be affected through nutritional status. A sample of 573 female industrial workers, aged 17 through 23 years, from 4 different industries (2 in normal, 2 in 3 shift work pattern) were surveyed by questionaire examining their nutritional status, food intake, dietary habit, sleep complaint, performance of digestive organs, and degree of fatigue. Shift workers were surveyed during night work. The results are summarized as follows: 1. Sleep complaints and degree of fatigue in shift workers were higher than normal workers, whereas the performance of digestive organs were as lower than normal workers. These results showed that shift workers were more stressed than normal workers. 2. The workers who were surveyed were all poor in nutritional status. The intakes of calorie, protein, Ca, riboflavin, and ascorbic acid were lower than Korean Recommanded Dietary Allowences (RDA). Dietary habit of the shift workers was irregular. 3. There was a negative correlation between nutritional status and degrss of fatigue. The intakes of energy nutrients, ascorbic acid, and niain were significantly related to the degree of fatigue in which protein intake was found to be most influential. Among workers with the same level of protein intake, shift workers showed higher degree of fatigue. When the protein intake of shift workers was 100-125% of R.D.A., they showed the same degree of fatigue to the average normal workers.

• 기본간호학회지
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• 제3권2호
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• pp.285-297
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• 1996

This study has been done for the purpose of investigating the degrees of death orientation and terminal care performance. The factors related to these two variables, and the relationship between death orientation and terminal care performance. The subjects of study were 128 nurses who implemented nursing care for terminally ill patients at C University Hospital in Kwang Ju city. The data were collected from March 13 to 19, 1996, by means of Death Orientation by Thorson Powell(1988) and Terminal Care Performance Scale by researcher. The data were analysed by t-test, ANOVA, Duncan test and Pearson's correlation coefficient. The Results of this study were summarized as follows : 1. The mean score of death orientation was 61.4. The degree of death orientation showed no significant difference depending on the general characteristics of nurses. 2. The mean score of terminal care performance was 45.5. In comparison of the degree of terminal care performance among three domains, the mean score of each item tended to show higher degrees in order of 'Psychological domain(2.4)', 'Physical domain(2.2)', 'Spiritual domain(1.9)'. 3. The degree of terminal care performance showed significant differences in age(F=11.48 p=.0001), marital status(t=10.49 p=.0015), religion(t=5.01 p=.0270), period of clinical experience(F=10.30 p=.0001) and ward unit(F=3.73 p=.0036). The degree of terminal care performance in physical domain showed significant differences in age(F=7.26 p=.0010), marital status(t=9.72 p=.0023), period of clinical experience(F=7.03 p=.0013), ward unit(F=6.23 p=.0001). The degree of terminal care performance in psychological domain showed significant differences in age(F=8.73 p=.0003), marital status(t=4.22 p=.0419), religion(t=5.59 p=.0196), period of clinical experience(F=6.36 p=.0023), ward unit(F=3.33 p=.0075). The degree of terminal care performance in spiritual domain showed significant differences in age(F=8.30 p=.0004), marital status(t=10.45 p=.0016), religion(F=5.41 p=.0216), period of clinical experience(F=8.80 p=.0003). 4. The relationship between the degrees of death orientation and terminal care performance showed no correlation(r=-.026 p=.7746).