• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.3
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• pp.187-202
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• 2013

The electronic medical device industry and the relevant market have been greatly expanded owing to various factors, such as the advent of the aged society and the spread of the desire for well-being in developed countries, and rapid development of China, India and other emerging markets. The electrical stimulator is one of electronic medical devices most commonly used in homes. The electrical stimulator is widely used for pain relief, rehabilitation, muscle conditioning and others. Since it is mainly used in homes, it is very important to assure the safety and performance for protection of users. However, there is no guideline on evaluation of safety and performance of such electrical stimulator for home use. In this study, various local and foreign references were reviewed to develop the internationally harmonized procedures for safety and performance evaluation of the electrical stimulator and test items, specifications and methods are proposed. In addition, such proposed test items were validated to decide the internationally harmonized tests for safety and performance evaluation. This study will contribute to improvement of quality and safety of electrical stimulators for home use and help the Korean medical device industry have the international competitiveness.

• Industry Promotion Research
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• v.2 no.1
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• pp.45-50
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• 2017

This study analyzed the effect of on - the - job training of workers in Chungnam western area on productivity improvement. A total of 76 questionnaires were analyzed for workers in the western part of Chungcheongnam-do that completed the training course of the Korea Polytechnic University Education and Labor Ministry. The results of this study are as follows: First, the higher the motivation to receive the on - the - job training for the improvement of the productivity, the higher the satisfaction of the training of the worker, but the effect on the job productivity was not significant. Second, the correlation between training experience and job productivity was not statistically significant. Third, as for the effect on the productivity improvement according to the rank, the temporary workers showed higher education satisfaction than the regular workers (agency), and the job productivity was higher than the manager (manager level). Results of ANOVA analysis showed that there was a significant effect on educational satisfaction and job satisfaction according to years of work, career, and rank. The purpose of this study is to analyze the effects of on - the - job training of workers in the western part of Chungnam, on the productivity improvement, The validity of the study is significant.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.368-368
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• 2017

근대적 기상관측이 시작된 1905년 이후 우리나라의 연평균 강수량은 증가하고 있으나 강수량 변동폭 또한 커지면서 최갈수 기간의 영향을 받는 댐 등 대규모 수공구조물의 용수공급능력은 감소되고 있다. 또한 지역별 강수량과 인구 편차로 공간적으로 이용 가능한 수자원의 불균형이 발생하고 있어 지역적인 물 공급의 안정성과 형평성은 여전히 취약한 상황이다. 하지만 사회적 공감대 형성이 쉽지 않은 대규모 수자원개발 추진은 어려운 여건이며 국민들의 안전하고 맑은 물에 대한 수요 또한 지속적으로 증대되고 있어 이를 해소하기 위한 다각적인 대책 마련이 필요한 상황이다. 본 연구에서는 기 확보된 수자원의 효율적이고 공평한 활용을 위해 국내 용수공급의 중추적인 역할을 담당하고 있는 댐을 대상으로 댐간 연결을 통한 용수공급 방안을 제시하였다. 이를 위하여 소양강댐, 충주댐 등 다목적댐 16개 및 광동댐, 영천댐 등 용수댐 12개 총 28개댐의 용수공급능력 평가와 장래 용수수요량 조사를 실시하였으며 장래 용수부족 지역 해소를 위한 상시공급과 극한가뭄 등 재난 대처를 위한 비상시공급 방안을 검토하였다. 상시공급은 댐 용수공급능력 평가를 통하여 기본계획공급량 대비 여유수량을 갖는 댐에서 장래 용수수요 증가, 용수공급능력 감소 등으로 공급 용수가 부족한 인근 댐으로 공급하는 방식이며 용수 공급량은 저수지 모의운영을 통하여 양댐의 이수안전도(분석 기간중 1회에 한하여 물 부족 허용)를 충족시키는 수량을 산정하였다. 비상시공급은 타수계 및 근거리간 연결, 가뭄 예상지역을 기준으로 대상 댐을 검토하였으며 용수 공급량은 공급댐의 유지용수와 관개용수를 이용하여 공급받는 댐의 생 공용수 20% 공급가능시 공급량으로 산정하였다. 검토 결과 상시공급은 소양강댐에서 횡성댐으로 86천$m^3$/일, 장흥댐에서 주암본댐으로 127천$m^3$/일, 남강댐에서 수어댐으로 $140m^3$/일, 비상시 공급은 충주댐과 대청댐, 충주댐과 안동댐간 각각 500천$m^3$/일 공급을 통하여 장래 용수부족 지역의 물 부족 해소와 극한가뭄 등 비상상황의 대처가 가능한 것으로 분석되었다. 본 연구는 기후변화와 사회가치적으로 변화하고 있는 수자원 환경에 능동적으로 대처하기 위한 대책의 일환으로 고안된 것이며, 향후 유역간 물 이동에 따른 현행 수리권제도 및 어류, 수질변화에 따른 환경영향 등에 대하여 추가적인 연구가 필요할 것으로 판단된다.

• Journal of The Korean Association of Information Education
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• v.18 no.4
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• pp.471-482
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• 2014

It is known that the smart education has a positive impact of critical thinking skills and problem solving, communication and collaboration, creativity and innovation in the 21st century. However, some people concern about the adverse effects of smart education such as smart devices addiction and health problems. In this study, we conducted the adverse effects of education using smart devices on students. The questionnaire survey was conducted and analyzed for students in 9 schools at A city(four elementary schools, three middle schools, two high schools) that are receiving smart education. The types of adverse effects of smart education includes smartphone addiction, lack of information ethics, health problems, and lack of social and learning ability. We showed the differences each item compared among elementary school, middle school and high school about adverse effects of smart education. The result of survey didn't have any adverse affect of smart education such as internet addiction or smartphone addiction. However in order to protect the copyright, the school needs to fight against indiscriminated downloads and perform the information ethics education. Plus we surely need to be more open-minded in reading and exercise at school and home.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.485-490
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• 2009

강원도의 약 89%가 산지로 되어 있기 때문에 강원지역 주민의 거주지는 대부분 홍수 피해를 강하게 받는 계곡이나 하천변에 잡고 있으며 매년 반복되는 홍수의 피해 위험이 높다. 따라서 홍수 시 생활공간을 보호하기 위한 제방의 안전성을 확보하는 것은 강원도의 하천관리에서 가장 중요한 점이다. 호안공법은 일반적으로 하천의 생태계나 경관적인 측면에서 부정적인 경우가 많은 인공시설물이기 때문에 최근에는 자연과 어울리는 친자연형 호안공법을 추구한다. 본 연구는 강원도 내 1개 국가하천 6개 지점, 214개 지방하천 2,760개 지점에 대한 하천 호안공법의 종류, 식생상태, 하천특성, 호안파괴 특성 등을 조사하고 하천호안공법 적용 하천특성과 호안공법, 식생 등의 관계를 분석하여 강원도형 호안공법 개발의 기초자료를 제공하는 데 목적이 있다. 강원도에 설치된 호안공법은 망태형, 붙임형, 블록형, 쌓기형, 옹벽형으로 구분할 수 있으며, 영동지역은 망태형 25%, 옹벽형 20.1.%, 블록형 18.3%를 차지하고 있으나 영서지역 하천은 쌓기형 32.9%, 망태형 19.2%, 옹벽형 16.6%를 나타내고 있다. 두 지역에서 옹벽이 16%이상을 차지하는 것은 하천경사가 급하고 만곡 수충부가 많아 홍수 시 구조적인 안정성이 큰 옹벽을 통한 호안보호에 따른 것으로 판단된다. 옹벽을 제외하면 하천평면이 호안공법 선택에 큰 영향을 미치지 않은 것으로 보이며 오히려 하천경사나 하천재료 특성이 반영된 것으로 판단된다. 호안파괴의 원인은 홍수 시 하상의 세굴이다. 그러나 옹벽호안은 국부적인 하상세굴에도 콘크리트 구조특성으로 쉽게 파괴되지는 않는 것으로 판단된다. 보 하류지점에 설치된 돌망태 호안은 하상저하와 보에 의한 유향변동으로 발생된 강한 수충현상에 의해 파괴되는 것으로 조사되었다. 호안의 식생 활착은 블록형, 망태형, 쌓기형 호안의 순으로 양호한 것으로 나타났다. 망태형이나 쌓기형 호안은 영동지역보다는 영서지역에서 높은 식생 피복도를 나타냈으며, 이는 하천의 경사와 호안의 침수빈도와 관계가 큰 것으로 판단된다. 식생블록형 호안은 지역 구분 없이 식생피복도가 높고 하천경사나 재료특성에도 불구하고 강원도의 하천호안공법으로 우수한 기능을 한다. 시급히 식생을 도입하고자 하는 경우 식생블록형 호안이 추천되며 호안공의 안정성과 식생의 다양성 측면에서는 망태형 호안공법이 추천된다.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.91-102
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• 2021

This study explored the educational effects of the digital citizenship teaching and learning model on middle school science classes. For this purpose, two classes of the third grade of middle school in Gyeonggi-do were selected, and the experimental group(28 students) was taught science classes using digital citizenship learning model, and the control group(28 students) was taught in regular lectures. The measurements used to verify the effects of science classes using the digital citizenship learning model were digital citizenship and empathy tools. The data collected for the effect verification were analyzed by independent sample t-test and ANCOVA. As a result, the experimental group applying the digital citizenship learning model showed higher scores of digital citizenship and empathy than the control group. Therefore, it can be seen that the middle school science class applying the digital citizenship learning model was effective in cultivating the digital citizenship and empathy of middle school students. In future studies, it is necessary to examine the effects of digital citizenship learning model at different school levels and other subjects.

• Korean Journal of Social Welfare
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• v.37
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• pp.1-31
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• 1999

In Korea, little is known about unemployment duration and exit rate from unemployment. This paper empirically examines the duration of unemployment using data for the years 1996 and 1997 on unemployed individuals who are eligible for unemployment insurance benefits in Korea. A parametric survival model (log-normal model) is adopted to identify factors predicting transitions to reemployment. Factors that affect unemployment duration are sex, age, employment duration (year), prior salary, region, prior employment industry, cause of unemployment, officially determined unemployment benefit duration, degree of benefit exhaustion, and amount of benefits for early reemployment. However, education is not statistically significant In degree of benefit exhaustion, the exit rate from unemployment decreases as benefit exhaustion is approached. In amount of benefits for early reemployment, the exit rate from unemployment increases as amount of benefits increases. Hazards for reemployment gradually increase until 80 days after unemployment and gradually decrease in the following period. Thus, we find that distribution of hazards for reemployment has log-normal shapes between inverted U and inverted L This paper takes advantage of a unique analysis about unemployment duration and exit rate from unemployment in the Korean Unemployment Insurance system which functions as the most valuable social safely-net mechanism in the recent national economic crisis. Indeed, this paper provides a basic knowledge about realities of unemployed individuals in the Unemployment Insurance system and identifies research areas that require further study.

• Korean Journal of Optics and Photonics
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• v.21 no.2
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• pp.53-60
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• 2010

An integrated light guide plate (LGP) was designed for liquid crystal displays (LCD) without using prism and diffuser sheets. The integrated LGP is textured with micro-patterns on both the top and bottom surfaces. The textures effectively substitute for a single prism-sheet and a diffuser sheet in LCD displays without decreasing the brightness and uniformity. A LCD display with our integrated light guide is simulated to give average luminance of 4560 cd/$m^2$, luminance uniformity of 83% horizontal viewing angle $60^{\circ}$ and vertical viewing angle $56^{\circ}$. Therefore an ultra thin (slim) back light unit can be constructed with fewer optical sheets, which reduces the manufacturing cost and so improves price competitiveness.

• Culinary science and hospitality research
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• v.18 no.4
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• pp.27-46
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• 2012

Organizational factors and personal traits are two elements of widely acknowledged relevance in employees' organizational outcomes in hotel industry. Personal traits especially need to be further examined as a consideration for employment. As one of the personal traits that provide capability to manage emotions, emotional intelligence is selected. The empirical objective of this study is to investigate the effects of emotional intelligence on job satisfaction and organizational commitment in a structural model. To conduct research questions, five star deluxe hotel employees in Korea are targeted to be surveyed. Descriptive statistics and multivariate analysis of variance, and structural equation modeling(SEM) are utilized employing SPSS and AMOS 4.0 to analyze the survey results. It was found that the components of perceiving emotions and understanding emotions predicted job satisfaction. Relatively perceiving emotions presented a higher impact on each dimension of job satisfaction. Satisfaction with co-workers and communication can also explain the level of hotel employees' organizational commitment. Broadly speaking, the results suggest that effective psychotherapeutic or reciprocative programs should be integrated into hotel training contents for emotional intelligence development.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.573-594
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• 2017

The present study interviewed Eight novice supervisors (i.e., counselling psychologists with fewer than 5 years of experience) to investigate the need for formal supervision training. A consensual qualitative research method was used to analyze data, and the result found four main domains, 12 sub-domains, and 33 categories. The results also indicated that novice supervisors believe their own supervisors and expert supervisors have a great understanding of individual counselling cases, and that the role of a supervisor is to help supervisees' ability to understand each case better. Novice supervisors generally take their own supervisors as their role models, although most of them did not receive formal training from their own supervisors. Novice supervisors seek advice on supervision from their colleagues or their own supervisors but still find supervising difficult. They also believe there is a great need for clearly set guidelines or a manual on providing effective supervision.