• Design & Manufacturing
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• 제12권2호
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• pp.27-33
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• 2018

Korea's automobile industry, which has grown rapidly to become the world's fifth-largest automobile producer, To cope with environmental pollution and energy problems in order to prevail competitive edge in global market We are investing a lot of research personnel and costs. Among them, for realizing alternative light weight It is a part of the automobile module system that has achieved the technological development before the breakthrough in the injection molding process in the press process. Door module PNL was the subject of research. The door module PNL is expected to cause warpage before the mold production due to the thin and flat product characteristics and fiber orientation characteristic of the material. In this paper, CAE analysis and reverse correction tool Design. CAE analysis to obtain the results of weld line position, bending position and deformation value Through the correction tool, think3, the original product was modified before the mold production to improve the completeness of the parts. In fiber orientation, the position and size of the cooling channel in the mold, the position and size of the gate, Temperature, pressure, time, and work environment. Compared with the result of CAE analysis, the product that was reverse-corrected by Think3 was manufactured, and injection molding was performed. Injection molding products were tested 24 hours later. 3.5 mm to 7.0 mm, and under the fixed condition, the deviation was from 1.1 mm to 1.5 mm. Unlike the CAE analysis, the deviation of the actual injection pressure and the cooling temperature, the fiber orientation of the material, In order to solve this problem, it is necessary to compare the injection conditions with the database, I knew I had to catch the standard.

• 한국실내디자인학회논문집
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• 제23권4호
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• pp.220-230
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• 2014

As office workers tend to spend more time indoors nowadays, the importance of physical environments has been emphasized. Those who work longer hours in the office are likely to get more stress from the environments. A number of studies have proved that the plants (natural elements) were effective in relieving stress. Therefore, it is concluded that interior landscape is effective on enhancing the psychological wellbeing of office workers. The purposes of this study were as follows: (1) to determine the best modulized designs through rating psychological indices, and (2) to prove its effectiveness by applying those designs onto actual office environments. This study was conducted from April, 2012 to November, 2012. The subjects of the study were comprised of 154 juniors and seniors in Seoul Women's University. They are university students who are seeking jobs upon graduation. To this end, field investigations, surveys, and literature reviews were conducted. The results of the study indicated as follows: First, the most optimal models for psychological wellbeing have been derived. Second, the interior landscape had a positive effect on the psychological wellbeing of the office workers. On the basis of these findings, interior landscape with greens plays a big role in promoting the psychological wellbeing of the office workers. Also, its effect can be maximized when modulized design is combined with interior landscape. The limit of this study lies in its simplicity of design elements as emotional design aspects were quantified for statistical processing. In the near future, further studies focusing on various design elements need to be carried out. To sum up, the researcher hopes that these findings contribute to psychological recovery of the office workers, and interior landscape becomes more prevalent in the workplace.

• 한국산학기술학회논문지
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• 제15권10호
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• pp.5945-5949
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• 2014

농촌의 고령화로 인한 일손이 감소되고 있다. 반면 노인들의 일은 늘어나고 있다. 또한 농부들은 대량생산을 목표로 하는 사람들이 늘어나고 있다. 그리고 일 효율의 문제에 있어서도 보완하기 위해 농작물을 보호하는 지지대와 집게에 대한 연구를 하려고 한다. 지지대의 강도는 바람의 세기보다 강하여 파손의 우려는 없지만 집게가 식물을 잡을 만큼의 힘을 가지고 있지 않아서 형상설계 문제로 접근 하였다. 실제 지지대와 집게에 걸리는 하중을 구하고 시뮬레이션 값과 비교하여 시뮬레이션의 정확도를 확인한다. 시뮬레이션의 신뢰성을 토대로 더 큰 힘을 버틸 수 있는 모델과 크기를 선택한다. 본 논문의 연구결과를 통해 0.1N에서 0.6N의 작용력이 작용하여도 1.29N의 작용력까지 버틸 수 있는 농작물 지지대를 설계하여 농작물 고정용 집게에 걸어 고정하게 됨으로 작업시간의 단축과 작물의 생육과 작물의 재해를 방지 및 예방, 도움이 될 것이라 판단된다.

• 대한가정학회지
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• 제48권1호
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• pp.137-161
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• 2010

The aim of this study was to identify the most effective methods with which to revitalize Korean high school culinary education. To achieve this aim, a culinary recognition questionnaire survey of 616 students from 9 culinary high schools was carried out. The 9 surveyed schools represented the following of 7 regions: Chungnam, Busan, Incheon, Daegue, Jeonbuk, Gyeongbuk, and Gwangju. Collected data were subjected to descriptive analysis, $x^2$-test, t-test, and one-way ANOVA using SPSS(version 14.0). The results of this study are as follows. Culinary practice interest and learning demand of most students were high. 6.8% of students indicated that initial theory learning, followed by video education, and finally live demonstration is an effective teaching methodology. They preferred practicing on actual ingredients as the primary teaching and learning method, nominating technician cooking as the most favorite. As for areas needing improvement in culinary practice education, difficulties with material preparation and insufficient learning hours were identified as prominent factors by 66.8% of respondents. There was unanimous agreement that culinary practice education can be enhanced by highly skilled teachers, while interest for the discipline itself can be fostered by initiating and encouraging cooking participation in the home. Freshmen and special high school students suggested that a cooking related website is necessary to expand the current information interface, which is currently limited to colleagues and employers. In relation to culinary education revitalization, consistent promotion of departments, or high schools that have proven student satisfaction rates and effective culinary curriculum are required. Furthermore, teachers can also aid this process by more effective student pastoral care in order to improve school life satisfaction. However, teacher job satisfaction is an important component of this process, and better employment conditions and remuneration packages reflecting extra work must be considered as part of an attractive teacher-incentive employment policy.

• 한국건축시공학회지
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• 제13권4호
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• pp.321-332
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• 2013

건축물의 생애주기비용은 시행과정 전 단계에서 상호 연관되어 비용이 발생하며 각 단계마다 서로 간에 영향력이 존재한다. 하지만 건축 프로젝트의 각 단계별 CBS가 서로 상이하여 합리적인 공사비를 산정하는데 문제점이 발생한다. 따라서 본 연구에서는 기존에 연구되었던 LCCBS를 바탕으로 건축 프로젝트 각 단계 간에 경계조건을 분석하였다. 또한 분석된 경계조건을 바탕으로 분절요인을 분석하고 이에 따른 연계방안을 모색하였다. 연계방안의 유효성 검증을 위해 실제 건축프로젝트를 바탕으로 사례적용을 실시하였다. 분석결과 누락되는 항목이 97.2%이상을 개선하였고 평균 6시간 빠르게 업무를 수행할 수 있음을 확인할 수 있었다. 향후, LCC 시스템에 적용함으로써 LCC의 효율적인 산정 및 LCC 절감을 계획할 수 있을 것으로 사료다.

• Safety and Health at Work
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• 제2권1호
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• pp.52-56
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• 2011

Objectives: The occupational accident rate was officially reported to be 0.77 per 100 workers in 2001 and 0.70 in 2009. The stagnant decrease in accident rate raises a question about the effectiveness of prevention activity because there have been active prevention efforts in the past 10 years. It is also necessary to know the exact status of occupational injuries to direct a prevention strategy. Methods: The author re-analyzed occupational injury statistics to find the reason for stagnant decreases in occupational injuries. Compensated occupational injuries cases were used to calculate fatal and non-fatal injury rates. Injuries from commuting accidents and sports activities were excluded as well as occupational diseases. The number of workers was adjusted to that of full time equivalent employees. Results: The fatal injury rate excluding injuries associated with commuting accidents, sports activities, and occupational diseases decreased from 12.59 in 2001 to 8.20 in 2009. In 2007, 67.5% of accidents that involved being caught in objects, which are mostly caused by machines and equipment, occurred in the manufacturing industry; this type of incident has decreased since 2001. The fatal and non-fatal injury rates in the manufacturing industry have continuously decreased while the rates in the service industry have not changed from 2001 to 2009. Non-fatal injuries might not be reported in many cases. The number of insured workers was underestimated as long working hours were not adjusted for in the reporting system. Conclusion: The occupational fatal injury rate has decreased and the non-fatal injury rate might have decreased during the last 10 years, although the statistics show stagnancy. The decrease of the injury rate was countervailed by various factors. Hence, the current accident rate does not reflect the actual situation of accidents in Korea. Korea needs to develop an improved system to more accurately calculate occupational fatal and non-fatal injury rates.

• 한국인터넷방송통신학회논문지
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• 제19권3호
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• pp.17-23
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• 2019

IaaS는 인프라 하드웨어를 소유하지 않고 필요에 따라 임대하는 새로운 방식의 컴퓨팅 서비스로서 비용측면에서 매우 효율적인 것으로 알려져 있다. 일반적으로 사용량에 따른 과금 방식을 채택하므로 인프라 비용에 민감한 서비스를 운영하기에 적합하다. 이러한 서비스를 운영하는 책임자는 예상되는 소요 비용을 조기에 파악하여 클라우드 활용 정책을 적시에 변경하기를 원할 것이다. 그러나 클라우드 서비스 제공자들은 십수시간 지연된 과금 정보를 제공하여 신속한 대처가 불가능하다. 본 논문에서는 가상 머신 인스턴스 수준에서 사용량을 모니터링하고 이에 기반하여 실시간 IaaS 비용 예측 모델을 제안한다. 이 모델 검증을 위하여 1학기 동안의 공용 클라우드 기반의 PC 실습실 서비스를 운용하였으며, 이를 통하여 부과된 실제 금액과의 차이는 평균 5.2% 이하임을 확인하였다.

• 생물환경조절학회지
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• 제18권3호
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• pp.266-272
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• 2009

국내 주요 과채류 농가, 국내외 컨설턴트 및 컨설팅 업체를 대상으로 하여 컨설팅 실태와 개선방향을 위한 설문조사를 수행하였다. 농가는 생산기술을 습득하기 위해서 컨설팅은 반드시 필요하며, 방문에 의한 컨설팅을 원하였다. 그러나 컨설턴트의 현장경험과 지식수준에 대하여는 신뢰성이 낮았다. 또한 컨설턴트의 과중한 업무로 방문 시 충분한 시간을 할여하지 않는다고 답하였다. 그리고 적합한 컨설팅을 위해서는 생산이력 관리시스템이 필요하다고 하였다. 3자간 공통 문항 결과에서는 계약기간(답변: 연간계약), 컨설팅 적정 수단(답변: 방문), 방문 시 컨설팅 시간(답변: $2{\sim}3$시간)등에 대하여는 대부분 공통적인 답변이었다. 그러나 일부 농가에서는 방문 시 컨설팅 시간을 연장하기를 원하였다. 컨설팅 공급자(컨설팅업체, 컨설턴트)와 수요자(농가) 간 가장 큰 차이를 나타낸 항목은 계약금 결정방법(답변 가계약 금액컨설팅 내용과 질)과 현재 정부 보조금 지원(답변: 적정확대)이었다.

• 한국건축시공학회지
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• 제22권6호
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• pp.681-688
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• 2022

본 연구에서는 도면정보나 건축물 정보가 불확실한 노후 지역의 건설폐기물 발생량 예측을 위하여 드론촬영, 자동 체적 산출, 연면적 간접 변환, 폐기물량 예측의 과정을 QGIS 플러그인 형태로 구축하였다. 이를 위해 모의검증을 통하여 드론 활용 자동 산출된 체적과 현장실측 기반 BIM 체적과의 높은 일치성을 확인하였다. 실제 해체예정지를 대상으로 현장검증을 실시하고 드론 기반 체적과 실측-BIM기반 체적의 일치성을 재확인하였다. 층고와 건축물 유형 설정을 통하여 폐기물 발생 원단위를 적용하고 직간접적인 방식으로 폐기물량을 산출하였고, 전체 과정은 드론 촬영과 산출 자동화 과정을 포함하여 면적 1,200,000m² 대상지를 6시간 이내의 작업시간으로 신속하게 처리하였다. 비록 건축물 정보와 드론을 통한 건물 객체의 차이는 가설물, 적재물, 층고 설정에 따라 오차가 발생하였지만, 실제 해체물량도 최초 예측보다 더 크게 발생할 것으로 파악되었으며, 향후 사례조사를 통하여 체적-연면적 변환의 정확도 향상에 대한 개선이 필요할 것이다.

• 보건의료산업학회지
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• 제2권1호
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• pp.37-55
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• 2008

This study aims to enhance work efficiency and satisfaction by offering data that make a physical therapist cope with stress coming from the job efficiently by identifying and analyzing the job satisfaction and work stress perceived by a physical therapist, and the level of reaction of a physical therapist. The study distributed survey questionnaires to 300 physical therapists working in medical institutions in Busan via mail and by visit from March 3, 2007 by selecting them simply and randomly from the physical therapist list, and collected the questionnaires by March 20, 2007, 103 respondents were working at 17 general hospitals including a university hospital, 65 respondents at 12 medical centers, and 79 respondents at 39 doctor's offices. The study collected 251 copies, which showed the collection rate of 83.7%, and analyzed 247 copies (82.3%) excluding 4 copies of insincere answers. As a research tool for measuring job satisfaction the study used a tool employed for research into the job satisfaction of physical therapists who work at medical institutions in Gwangju, Jeonnam, and Jeonbuk by Kim Hee-Gwon(1992) and research regarding job satisfaction by Jeong Jeong-Hee(2004) as well as research regarding the factors of job satisfaction by Flippo(1980) & Seberhagen(1970) after adjusting the research tools to the purpose of the study. Also for questions about work stress, the study employed nurses' job stress measurement tool developed by Kim Mae-Ja and em Mi-Ok(1984) by modifying the tool to the purpose of the study, and for a measurement tool for reaction to stress, the study used a tool employed for research into reaction to stress of nurses at general hospitals by Choi Eun-Deok(2005) without modification. For data analysis, the study used the SPSS12.0 as a statistical method, and then used t-test or ANOVA for verifying actual numbers, percentile, average :score, standard deviation, rank, and difference. Also, the study conducted which is a post-test method for variables that show a significant difference at the level of p<.05 level after the analysis. The findings include the following. 1) The respondents' job satisfaction score was 3.21 points on the average (out of 5 full points). The peer relationship ranked the highest, posting 4.02 points on the average, and the job satisfaction with rewards was proven the lowest, posting 2.51 points. For the job satisfaction level by characteristics, there were significant differences (p<.05) in gender, hospital type, weekly working hours, monthly working days, number of patients per day, department in charge of therapy, and number of peers, and there was no significant difference in characteristics other than that. 2) The respondents' work stress score was 2.72 points (out of 5 full points) on the average. The respondents were shown to be under the highest stress when they suffered from excessive workload, posting 3.49 points on the average, and they were shown to be under the least stress when they had a conflict with peers at another department, recording 1.90 points on the average. for the job stress level by the characteristics of job, there was a significant difference in the reflection of job assessment(p<.05). 3) 1n respondents' reaction to stress, most of them were shown to make efforts in coping with stress, posting 2.80 points (out of 5 full points). For their experience of being wider stress, they answered that 'they felt depressed (2.85 points)" for their experience of coping with stress, they answered that 'they were indifferent to it or thought about something else' (2.62 points). Also, for their efforts in coping with stress, they answered that 'they were motivated to remove their strain by taking leave, playing, or using their preferences' (3.52 points), which ranked higher. For the level of reaction to stress by characteristics, there were significant differences by age, gender, marital status, total service years as a physical therapist, monthly working days, and department in charge of therapy(p<.05). It is necessary to offer correct information by conducting an in-depth analysis of the stressful situations of physical therapists who exert efforts in rehabilitating patients at hospitals by factor, and seeking management plans based on the research results. Also, it is necessary to develop a program for coping with stress efficiently for removing stress and to conduct research into the understanding and cooperation of administrators and persons in charge of physical therapists for reducing physical therapists' stress at hospitals.