• Journal of Nutrition and Health
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• 제35권8호
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• pp.886-895
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• 2002

Introduction and application of virtual education has been rapidly increased in these days. A variation of information communication technology has an effect on education in interconnect with network as internet in the world that exceed the limit of time and regional. Computer and network communication technology through the medium of internet make an entrance cyber education as a new education paradigm. It must be affective on learner who have various educational characteristics and requirements. It begins to appear quality, quantity improvements of knowledge and the development of information technology that web based cyber education. This study was conducted to develop the web based education program and to evaluate the effectiveness of learning satisfaction and accomplishment and to compare the cyber lecture system with the traditional lecture system During the second semester of 2001, this study was investigated 317 registered students in a "Food and Culture" class at Kyungwon University. The data were obtained from pre and post-study with self-administered questionnaire. The evaluation and satisfaction score of students who were registered in cyberclass was negative tendency to compare pre with post-test scores, because of insuffciency of computer-aided lecture system. The major problem was inconvenient in checking system for connecting times in cyberclass which was one of evaluation point in final score. Another problem was frequently disconnection during cyber studying and not to concentrate each time in the cyber lecture because of eye fatigue, boring due to less interesting contents than other newly developed web-site. The students was prefer to mix type of the cyber and traditional lecture type class. The result of final score an each class, the score of cyber class (71.36 $\pm$ 22.44) was significantly lower than other groups (mixed type : 76.66 $\pm$ 19.99, traditional type :79.17 $\pm$ 15.72) (p < 0.05). Cyber class was attempted to present a useful and interesting teaching and learning tool which can be applied successfully in a longer term. The result suggest that various teaching and learning strategies should be developed considering the fact that the student learn alone most in time.t in time.

• 한국가스학회지
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• 제24권1호
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• pp.76-81
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• 2020

최근 가연물이 있는 장소에서 용접·용단 작업 중 불꽃 비산 등으로 인한 화재·폭발사고가 빈발하고 있으며, 이러한 화재사고의 원인은 위험물 제거, 불꽃 비산방지 조치 등 기본적인 안전수칙 미준수가 대부분으로 산업안전보건법의 제도적인 보완이 필요하다. 본 연구에서는 국내 용접·용단 작업 등 화기작업에서의 화재·폭발 사고를 시스템적 관점에서 분석하고 그 결과를 반영하여 화재감시자 배치 확대, 화재위험작업의 사전승인, 화재예방 안전교육 강화 등 제도개선방안을 제안하였다.

• 한국콘텐츠학회논문지
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• 제21권1호
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• pp.284-291
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• 2021

현재 보안관제 시스템은 공격자의 공격 후 대응만을 위한 수동적인 시스템으로 운용됨에 따라 공격 발생 이후 침해사고 대응이 일반적이다. 특히, 신규 자산 추가 및 실제 서비스가 이루어지는 경우 실제 해커의 관점에서 취약점 테스트 및 사전 방어에 한계가 있다. 본 논문에서는 해킹 관련 다중 검색엔진을 활용하여 보호 자산의 사전 취약점 대응 기능을 추가한 보안관제 모델을 새롭게 제안하였다. 즉, 범용 또는 특수한 목적을 지닌 다중의 검색엔진을 이용하여 보호 대상 자산의 특수한 취약점을 사전에 점검하고, 점검결과로 나타난 자산의 취약점을 사전에 제거하도록 하였다. 그리고 실제 해커의 입장에서 인지되는 보호 자산의 객관적인 공격 취약점을 미리 점검하는 기능, IP 대역에 위치한 광범위한 시스템 관련 취약점을 사전에 발굴하여 제거하는 기능 등을 추가로 제시하였다.

• 한국정보통신학회논문지
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• 제24권5호
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• pp.600-608
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• 2020

머신러닝은 학습 데이터로부터 목적함수를 구성하고, 테스트 데이터를 통해 목적함수의 확인함으로써 발생하는 데이터에 대한 예측을 수행한다. 머신러닝에서 입력데이터는 전처리 과정을 통해 정규화 과정을 거친다. 이런 정규화는 입력데이터의 평균과 표준편차를 이용하여 표준화하거나, 수치 데이터가 아닌 nominal value는 one-hot 코드 형태로 변환하는 방식을 이용한다. 그러나 이 전처리 과정만으로 문제를 해결할 수 없다. 이러한 이유로 본 논문에서 입력데이터의 정규화를 위해 온톨로지를 이용하는 방법을 제안한다. 이를 위한 테스트 데이터는 모바일 기기로부터 수집된 와이파이 장치의 RSSI값을 이용하고, 수집된 데이터의 노이즈와 이질적 문제는 온톨로지를 이용하여 정제하는 방법을 제시한다.

• 한국간호교육학회지
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• 제11권2호
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• pp.278-286
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• 2005

Purpose: The purpose of this study was to find out the effectiveness of the CPR training for non-healthcare providers by checking the performing ability of the subjects before and after the teaching class. Method: This study was a single primary experimental study designed with pre and post test. Study subjects were 37 office staffs who participated in all test from March, 10th, 2005 to April, 18th, 2005. The tools of this study were CPR performing evaluation sheet and CPR teaching computer program. Data analyzed by descriptive statistics, t-test, repeated ANOVA and Bonferroni with SPSS 12.0 program. Result: The CPR practice performing ability statistically significant increased by the step of test. The CPR practice performing ability of learning experience group had significantly high score than non experience group. The self-confidence about CPR practice when faced emergency situation was increased after practice training. Conclusion: One to one CPR practice teaching method using simulation by CPR teaching specialists was turned out to be very effective in improving the ability of CPR practice of non-healthcare providers in a tertiary hospital than self-study.

• 대한영양사협회학술지
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• 제23권2호
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• pp.180-191
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• 2017

The purpose of this study was to identity the probability of cross-contamination from the environment. For this, we examined foodservices at 20 universities/colleges for microbiological analysis of their working facilities and environment as well as their preventive equipment against cross-contamination. Seventy percent of the 20 foodservices were found to maintain one unified working area, which suggests high probability of contamination of food/utensils/equipment in the cooking area by pre-preparation or dish washing. According to the microbiological analysis, the hygiene acceptance ratio of working facilities in the clean zone was 70%, which was higher than the average 45% hygiene acceptance ratio of working facilities in the contamination operating zone. There was a significant difference in the total plate count (P<0.001) and coliform count (P<0.01), which demonstrates that work tables in the clean zone were in a good state compared to those in the contamination operating zone. In the contamination operating zone, refrigerator shelves had a high probability of cross-contamination. Regarding the floor surface and airborne microbes, cooking areas which should be maintained as clean zones had higher cross-contamination probability than those in the contamination operating zone. So corrective actions such as cleaning and sanitizing, keeping dry floors, lowered temperature and humidity, shoe disinfecting facilities, and checking concentrations, are necessary to manage floor surfaces and airborne microbes in the cooking area.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1131-1135
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• 2005

Since human is vulnerable to emotional, physical and environmental distractions, most human inspectors cannot sustain a consistent 8-hour inspection in a day specifically for small components like door locking levers. As an alternative for human inspection, presented in this study is the development of a machine vision inspection system (MVIS) purposely for door locking levers. Comprises the development is the structure of the MVIS components, designed to meet the demands, features and specifications of door locking lever manufacturing companies in increasing their production throughput upon keeping the quality assured. This computer-based MVIS is designed to perform quality measures of detecting missing portions and defects like burr on every door locking lever. NI Vision Builder software for Automatic Inspection (AI) is found to be the optimum solution in configuring the needed quality measures. The proposed software has measurement techniques such as edge detecting and pattern-matching which are capable of gauging, detecting missing portion and checking alignment. Furthermore, this study exemplifies the incorporation of the optimized NI Builder inspection environment to the pre-inspection and post-inspection subsystems.

• 지역사회간호학회지
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• 제20권4호
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• pp.493-502
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• 2009

Purpose: This study adopted the non-equivalent control group pre-posttest design in order to examine the effects of aromatherapy and hand massage on anxiety, sleep, and depression in the female aged at residential facilities. Methods: This study was executed with the female aged at two residential facilities divided into an experimental group (n=35) and a control group (n=37). Data were collected by checking changes in the anxiety, sleep, and depression of the subjects who had received aromatherapy and hand massage ten times for two weeks. The data were analyzed using Chi-square test and ANCOVA (Analysis of Covariance). Results: The condition of anxiety and depression of the experimental group who had received aromatherapy and hand massage was significantly lower than that of the control group. Also, the condition of sleep of experimental group was significantly higher than that of the control group. Conclusion: The aromatherapy and hand massage program had a positive effect on institutionalized elders' anxiety, sleep, and depression pattern.

• 전기학회논문지
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• 제60권6호
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• pp.1255-1260
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• 2011

In this paper, we study on the reliability of Very High-rate Power Line Communication (VH-PLC) for Smart Grid, so that the resultant data rate is over 400Mbps at a physical layer. Firstly, reviewing the research trend of the PLC, we discuss the required techniques for supporting the Smart Grid. Considering a pre-specification with the value of several parameters, we investigate a multi-carrier modulation technique to overcome limitations of higher rate transmission under power line channel environments. Then, we propose a system specification of the VH-PLC in the sense of enhancing two features. One is resolving the problem of the co-existence of the deployed high-speed PLC according to the published standardization of KS X 4600-1 in Korea. The other is getting better performance on the grid adopting the diverse element techniques, such as multi-carrier modulation, a subcarrier utilization mode, a variable rate LDPC (Low Density Parity Check) code, and a time and frequency diversity technique. Further, a simulation tool, composed of an Event-Driven simulator and a Time-Driven simulator, is developed for the purpose of verifying the system performance and continuously cross-checking the test bench signal of the proposed VH-PLC system.

• Journal of Trauma and Injury
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• 제29권3호
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• pp.82-88
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• 2016

Purpose: Sonongraphic examinations such as extended Focused Assessment with Sonography in Trauma (eFAST) are widely used in Emergency Departments. This study is designed to determine student achievement by teaching medical college students through short training. Methods: 38 participants in their 3rd year of medical school were enrolled in this study. An Emergency Medicine physician trained the students to 2 hours of theoretical training followed by 2 hours of hands on training. Results: The average age of students was $28.1{\pm}3.4$, with 21 male students. The average of pre-educational test results were $60.4{\pm}8.9$ and post-educational exam results were $80.1{\pm}14.5$ (p<0.001). The average success rate of eFAST was 87.5%. But success rate of each items were lowest in checking the hepatorenal recess and the splenorenal recess, each success rate, 65.8% and 68.4%, consecutively. The questionnaires filled out after the study showed that the students were highly interested in this education and that they found the education easy to understand. They also answered that eFAST education is necessary in the medical college curriculum. Conclusion: This study shows that eFAST can be effectively taught to students through short training.