• 전기학회논문지
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• 제67권11호
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• pp.1562-1569
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• 2018

Sensor readings always have a certain degree of randomness and fuzziness due to its intrinsic property, other electronic devices in the circuitry, wires and the rapidly changing environment. In an electrical control system, such readings will bring instability in the system and other undesired events especially if the signal hovers around the threshold. This paper proposes a Gaussian-based statistical approach in stabilizing the output through sampling the sensor data and automatic tuning the threshold to the range of multiple standard deviations. It takes advantage of the Central limit theorem and its properties assuming that a large number of sensor data samples will eventually converge to a Gaussian distribution. Experimental results demonstrate the effectiveness of the proposed algorithm in completely stabilizing the outputs over known filtering algorithms like Exponential smoothing and Kalman Filter.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2022년도 학술발표회
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• pp.475-475
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• 2022

The aim of this study is to identify the significant pollutant sources from the tributaries that are affecting the water quality of the study site, the Geum River and provide a solution to enhance the water quality. Multivariate statistical analysis modles such as cluster analysis, Principal component analysis (PCA) and positive matrix factorization (PMF) were applied to identify and prioritize the major pollutant sources of the two major tributaries, Gab-cheon and Miho-cheon, of the Geum River. PCA identifies three major pollutant sources for Gab-cheon and Miho-cheon, respectively. For Gab-cheon, wastewater treatment plant (WWTP), urban, and agricultural pollutions are identified as major pollutant sources. For Miho-cheon, agricultural, urban, and forest land are identified as major pollutant sources. On the contrary, PMF identifies three pollutant sources in Gab-cheon, same as PCA result and two pollutant sources in Miho-cheon. Water quality control scenarios are formulated and improvement of water quality in the river locations are simulated and analyzed with the Environmental Fluid Dynamic Code (EFDC) model. Scenario results were evaluated using a water quality index developed by Canadian Council of Ministers of the Environment. PCA and PMF appears to be effective to identify water pollution sources for the Geum river and also its tributaries in detail and thus can be used for the development of water quality improvement alternative of the above water bodies.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.2283-2291
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• 2010

This paper evaluated the effectiveness for the case of it introduced the bimodal tram for the capital area adaptability of the bimodal tram in the limelight as the new transportation means of the next generation for capital area major transportation corridor. The KTDB with 1,142 zones was utilized for the analysis and the major transportation axis around the main road in which the traffic is high. The analysis index selected around the transportation index in which it can show up by the bimodal tram application and the decrease rate of the road traffic density, the travel time change, the carbon emission quantity change, and etc. was chosen as a result. It was analyzed as the axis in which the bimodal tram adaptability effect that it is high with the section this relative including the major analyzed result west AnSan IC~ Songsan Bridge, the SuWon terminal ~ SaDang station, the UiJungBu terminal ~ DoBongSan station, and etc. can be appeared and it was predicted that the travel demand reduction on the road of about 4~6% showed up.

• 한국학교보건학회지
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• 제13권1호
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• pp.131-145
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• 2000

For the purpose of strengthening Dental Hygiene students' confidence and motivation in the Dental Hygiene Department and helping construct proper professionalism, survey on Dental Hygiene students' consciousness of attitude to and satisfaction of the course, career plan and occupation mind set was carried out. 530 three year students in 8 Dental Hygiene academies in Seoul and Kyonggi province were questioned. The results of the survery are as follows:. 1. Dental Hygiene students' motives consisted primarily of employment and a desire for professionalism 25% of them entered the course after one failure in the entrance examination and 17% had family members engaging in the dentistry field 84%, the largest portion, were from an academic high school. 24% had some knowledge of Dental Hygiene, which they had acquired from seniors, friends, and teachers. 2. Patient care and treatment assistance related matters were not considered important in the course. The weak points of the course turned out to be education in computers and foreign languages, but the weakest was the ability of patient care during clinical training. 53% had experiences had thought of changing their major while in the course because it didn't match their aptitude and interest. 3. As for a career after graduation, 49% worried about it Most students wanted to work at a dental hospital or general hospital, The most favored duty was coordination or reception or oral disease preventive work. They wanted to work untill they had a stable living. 68% answered they would get a job at an oral clinic and 70% said they would continue studying for self-realization. 4. Satisfaction with the major was high in students whose aptitude and interest matched the course, who had background knowledge of the major, and who. didn't think of changing the major but would continue studying resulting in statistically slight difference(p<0.001). As to satisfaction with the faculties, it was high in the students whose aptitude and interest matched the major and who didn't think about a career after graduation showing a slight difference(p<05, p<0l). As for satisfaction with clinical training, students whose aptitude and interest matched the major and who didn't consider changing the major answered positively showing a statistically slight difference(p<.001, p<.01). As to satisfaction with the course, it was high in the students who entered with aptitude and interest, who had preliminary knowledge, who didn't consider changing the major, and who didn't think about a career after graduation showing a statistically slight difference(p<.001, p<.05). 5. Occupation mind-set was positive for students who entered with interest and aptitude, who had preliminary knowledge, and who had not considered changing the major showing a statistically slight difference(P<.001). The higher the satisfaction with the major, faculty and clinical training was, the more positive the occupation mind-set was(p<.001).

• 한국콘텐츠학회논문지
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• 제21권2호
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• pp.406-420
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• 2021

본 연구는 대학생들의 상담심리학 전공 인식에 관하여 Glaser의 근거이론 방법을 활용하였다. 상담심리학을 전공하는 3, 4학년 학생 중에서 19명의 학생이 연구에 참여하였는데, 5개월 동안 이들을 중심으로 개별 인터뷰 과정을 통하여 자료를 수집하였다. 자료를 분석한 결과로는 103개의 개념, 26개의 하위범주, 9개의 상위 범주, 1개의 핵심 범주가 도출되었다. 연구 결과로는 첫째, 참여자들은 사람들의 마음의 짐을 덜어주고 싶고, 치료자가 되고 싶은 희망을 품고 있었다. 둘째, 참여자 중에는 전공영역에 대한 자신의 성격과 적성면에서 '전공과 잘 어울린다.' '잘 선택했다.' '삶의 전환점이 되었다.' 등의 기쁨과 만족으로 인식하고 있었다. 그러나 적성의 부조화, 상담사 역할의 부담감, 전공에 대한 거부감 등, 전공의 부적합성을 인식하기도 하였다. 셋째, 참여자들이 전공 학습에서 유용성을 발휘하였을지라도 전공영역의 진로에 대한 인식은 고민과 갈등으로 작용하고 있었는데, 이들의 고민과 갈등은 앞으로 장기간 공부함으로 생기는 금전적 어려움, 직업적 열악한 조건, 감정소모가 심한 직업에 대한 부담감, 상담직에 대한 두려움, 학부 졸업의 한계, 진로의 불확실성 등에 관한 인식으로 전공 진로 선택의 걸림돌로 작용하였다. 넷째, 참여자들의 인터뷰 자료들을 분석한 결과 '이해와 성장 그리고 상담사의 꿈 실현 의지'라고 하는 핵심 범주를 도출하였다. 결론적으로 참여자들이 가진 전공 인식은 자신에 대한 변화와 성장 그리고 타인과의 건강한 관계 형성, 더불어 전공과 자신의 적성과의 적합성에 대한 만족 등은 진로에 대한 고민과 갈등 상황에서도 전문 상담사의 꿈을 실현하기 위한 지속적인 의지를 간직하는 것으로 드러났다.

• 융합정보논문지
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• 제11권7호
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• pp.272-277
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• 2021

본 연구는 간호대학생의 학업 및 임상실습 스트레스와 전공 만족도의 관계를 확인학기 위하여 시도되었다. 자료는 140명의 B대학교의 간호대학생으로부터 온라인 설문 조사를 통해 수집되었다. 수집된 자료는 SPSS 18.0을 사용하여 분석되었다. 일반적인 특성에 따른 학업 및 임상실습 스트레스, 전공 만족도와의 차이를 분석한 결과, 학업 스트레스는 종교와 차이가 있었으며(F=14.348, p<.001), 전공 만족도는 성적에 따라 차이가 있는 것으로 나타났다(F=4.582, p=0.004). 학업 스트레스, 임상실습 스트레스 및 전공 만족도의 상관 관계를 분석한 결과, 학업 스트레스는 임상실습 스트레스와 양의 상관관계가 있고(r=.388, p<.01), 임상실습 스트레스는 전공 만족도와 양의 상관 관계가 있는 것으로 나타났다 (r=.336, p<.01). 따라서 간호학 전공의 만족도를 높이기 위해서는 학업 스트레스를 낮추는 프로그램 개발이 필요하다고 판단된다.

• 정보관리학회지
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• 제38권4호
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• pp.47-64
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• 2021

본 연구는 국내 전문대학교 문헌정보과에 진학한 학생들을 대상으로 하여 설문조사를 실시함으로써 전공 선택에 영향을 미치는 요인(개인 요인, 가정 요인, 고등학교 요인, 대학교 요인, 사회 요인)을 통계적으로 검증하였다. 연구결과는 다음과 같다. 첫째, 개인 요인과 사회 요인이 전문대학교 문헌정보과 전공 선택에 유의미한 영향을 미치는 것으로 확인되었다. 둘째, 사회 요인보다 개인 요인이 전문대학교 문헌정보과 전공 선택에 더 큰 영향을 주는 것으로 나타났다. 셋째, 개인 요인은 전문대학교 문헌정보과 전공 선택에 유의미한 정적(+)인 영향을 주는 반면에 사회 요인은 전문대학교 문헌정보과 전공 선택에 유의미한 부적(-)인 영향을 주는 것으로 밝혀졌다. 본 연구의 결과는 향후 국내 전문대학교 문헌정보과들이 대학입학자원의 감소에 대비하기 위한 유용한 기초자료로 활용될 수 있을 것이다.

• 한국응급구조학회지
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• 제15권2호
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• pp.5-14
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• 2011

Purpose: The aim of this study is to identify the legal concept of a license and a qualification for health care personnel. We analyze the appropriateness of the qualification for the first-class paramedics and the sufficiency of 3-year job experience in substitution for college level academic major. Method: We reviewed Laws on Healthcare which stipulate academic and career qualifications for healthcare personnel for whom college-level academic training and job experience to get a license. Results: There is no legal consideration which permits major and educational background substituted by job experience. Only third-class hygienist who graduated from a high school or the equivalent with 3 year job experience can apply for first-class hygienist' national license examination without educational requirements. However, it is nothing to compare with first-class paramedics because the work of hygienist is not directly related to patients care and there is no need of doctor's supervision for hygienist' job. Paramedics have a major role in saving emergency patients in making prompt decision, applying appropriate emergency treatment, securing intravenous route, managing intubation, applying defibrillator, and etc. Conclusion: Ministry of Health & Welfare should grant license to paramedics and annul replacement of academic major background. In addition, it is imperative to broaden the scope of paramedics' job so that they can guarantee patient's life saving in emergency situation with quality major curriculum of college level.

• 대한치과기공학회지
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• 제33권4호
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• pp.427-440
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• 2011

Purpose: The following research analyzes the causes of major selection and career decision of students studying dental technology. It is to be used as basic data for the management of career improvement program. Methods: The survey has been processed to 490 college students studying Dental Technology in D-college. Questionnaire consists of major selection confidence sheet (14 items) and career decision confidence sheet (18 items) and was scored with 5-points per question. The collected data was analyzed by the statistical program: SAS V8 for Windows. To test for significance on each item, p < 0.05 has been decided as a standard. Results: The analysis of result about the level of confidence on major selection has valid difference by genders, serving military service or not, experience of studying one more year to enter the college or not, making career decision and grade. The analysis of result about career decision has valid difference by gender, serving military service, career decision, day and night course, age and native place. Conclusion: We develop the career advice program and manage it effectively, the confidence on the major selection and pride about its faculty will be high to dental technology students.

• 대한안전경영과학회지
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• 제22권3호
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• pp.23-29
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• 2020

As the duty to report and investigate major elevator failures has expanded due to the total amendment of the Elevator Safety Management Act in 2018, more important information on major elevator failures that have been partially identified has been collected. As of 2019, the number of elevators in Korea exceeded 700,000, making it the eighth-class elevator powerhouse in the world, but there is a trend of increasing casualties due to accidents and breakdowns. An Seung-gang-gi is a term that encompasses an elevator that moves vertically and an escalator that moves horizontally. It is an important means of transportation for most citizens that are encountered almost every day in daily life, and it is also necessary as a means of transportation that enables the construction of skyscrapers. And it seems that its importance will never diminish in the future. Major elevator failures are the main cause of dispatch when accumulating the number of 119 dispatches, and the frequency of occurrence is high. It's a shame. According to Heinrich's Law, 300 minor signs and danger phenomena precede, 29 minor accidents and 1 major accident. Accidents caused by elevators are increasing every year due to the increase in the number of installations, and the damage is threatening the valuable lives and property of users and workers in related fields due to fatal risks such as death and serious injury. Elevator safety management can achieve its purpose only when it is managed with the usual interests, awareness of safety, and full efforts of the users, workers, and the government concerned. This study was analyzed based on 2019 data notified to the Korea Elevator Safety Agency on major breakdowns improved after the revision of the Elevator Safety Management Act in 2018, and a total of 8,256 data were analyzed using the SPSS 21 version, a statistical analysis tool, to analyze the correlation with technical statistics. Proceeded. Through the analysis, it was possible to obtain preventive safety management data to prevent serious elevator safety accidents from occurring, and to derive meaningful implications that related safety management and maintenance can be effectively operated to prevent serious failures. In addition, through this analysis, we expect the development of related industries and legal and institutional improvement.