• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.72-72
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• 2022

자두나무(Prunus salicina Lindl.)는 세계에서 5번째로 많이 생산되는 과실로, 한국에서 재배하는 자두나무의 기본종은 중국 양쯔강 유역에서 기원했다. 2016년 과수용 자두나무와는 다른 자두나무가 양구에서 발견되었다. 양구군, 인제군, 고성군 일대의 자두나무 개체군의 유전다양성 및 집단 구조 분석을 통해 본 자두나무 개체군의 유전다양성 및 개체군 구조를 확인하고자 했다. 과수용 재배종을 포함한 시료를 채취하여 GBS 분석을 진행했고 주성분 분석과 STRUCTURE 분석을 통해 개체군간 유전적 구조를 확인했다. 재배종의 유전형이 다른 개체군에서도 나타나는 것으로 보아 유의한 유전적 분화가 일어났다고 보기 힘들었다. 하지만 고성군 고진동계곡 등 DMZ에 인접한 집단이 분계도에서 재배종 개체군과 가장 유전적 거리가 있는 것으로 나타났다. 하지만 본 분석으로는 야생집단으로 발견도니 자두나무의 실체와 기원을 단정짓기에는 부족한 것으로 보이며 외군 추가 및 더 많은 시료를 확보하는 등 추가 조사와 분석이 필요하다.

• Journal of Practical Engineering Education
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• v.16 no.1_spc
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• pp.1-9
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• 2024

The introduction of smart factory digital twins is a concept that has already been proposed to increase productivity in the manufacturing industry through CPS(Cyber Physics System), and has been applied to specific industrial process stages or partially introduced in stages where simulation is required. However, with the recent development of the 4th Industrial Revolution technology, it is receiving attention again along with XR (Extended Reality) technology. However, because there are not many effective cases, this study analyzed the devices, equipment, and technology of the manufacturing process to build a digital twin applying digital threads and synchronized signals and information to control, remote control, and produce intelligent process automation equipment. A platform capable of analyzing information was proposed and developed. Through this, we designed and built an XR content service platform that can support artificial intelligence and developed it to enable control, remote control, and analysis of production information. A possible platform was proposed and developed. We hope that this study will be helpful in conducting research on many cases, and in the future, expanded research on increasing productivity in each part of the process and production is needed through intelligent models.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.2
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• pp.81-86
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• 2003

There are many studies to measure and compare Korean foot length or foot shape. However, to make high-valued shoe product, it is not easy to find the research results about the shoe's products that include the customer requirements, price, and color. The purpose of this study is to investigate the customer's requirements for men's shoe product using the survey method, to analysis customer's needs, and to supply information to make the shoe that they want.

• Korean Journal of Construction Engineering and Management
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• v.22 no.1
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• pp.55-62
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• 2021

The productivity of rebar-work and form-work was analyzed with data collected from an actual high-rise construction project, and the actual utilization rates of three tower cranes were also investigated. It was found that the average productivity of the form-work increased from 12.00~8.71(㎡/man·day) in the underground and above-ground/lower-floor to 11.94~20.73(㎡/man·day) in the standard floor. Comparing the productivity of core area to outer, the former was found to be about 11% higher. Moreover, the rebar-work productivity of the outer area(1.12 ton/man·day) was approximately 9.6% higher than that of the core area for the standard floor. The average utilization rates of three TC were surveyed to be about 63.49%, and it was revealed that rainy weather(6.1%), strong winds(6.1%), holidays(17.8%), TC lifting work(5.8%), and other failures and repairs(0.07%) were the causes of non-operation. These research results are expected to be beneficial data in planning and managing the process of high-rise RC construction works in the future.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1991.10a
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• pp.423-439
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• 1991

본 연구의 목적은 당제철소에서 생산하는 제품중 전기강판 방향성 제품의 제질(철손) 불량원인을 추적하여 조업 guidance를 제시하는 model개발이다. model개발은 현장조업 data에 대해 상관분석, 회귀분석, 분산분석등의 통계적분석을 통하여 재질에 영향을 미치는 주 관련인자들의 조업기준 재정립과 menu화면에 의한 자동 불량원인 추적 model을 개발하였으며, model개발을 위한 사용 tool은 SAS package를 활용하였다.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.433-448
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• 2011

In this study, an empirical analysis was made with intent to establish an appropriate marketing business strategy for customers by inquiring into the effect of service education of 250 Korean restaurant employees, who provide services for foreign tourists in Seoul area as professional customers, on service orientation and organizational effectiveness. The result is summarized as follows. The effect of service education of Korean restaurants' employees on service orientation showed that the typicality, reliability, confidence and empathy have a positive effect on the service orientation. For the effect of service orientation on organizational effectiveness, the service orientation had a positive effect on the job satisfaction and organizational effectiveness. In other words, it was proven that the typicality, reliability, confidence and empathy of employees education are key mechanisms in improving their behaviors and attitudes to aim for important customer-centered services. Consequently, the backup of these attitudes and customer-oriented behaviors can be connected to the increase of productivity, which enhances the organizational effectiveness.

• The Korean Journal of Financial Studies
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• v.12 no.1
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• pp.183-213
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• 2006

본 연구의 목적은 공적분 검정과 예측오차 분산분해 방법을 이용하여 우리나라 주식시장에서 주가지수와 거시경제 변수들과의 계량적 관계를 파악하고 종합주가지수와 밀접한 관련성이 있는 변수를 사용하여 종합주가지수와 거시경제변수들 사이의 모형을 추정하는 것이다. Johansen 공적분 검증을 이용한 결과를 보면 종합주가지수와 7개의 거시경제변수들(총통화, 소비자물가지수, 금리, 산업생산지수, 원 달러 환율, 국제원유가격, 경상수지) 사이에 상당히 밀접한 연관성이 있으며, 이들 변수들 사이에 장기적 균형 관계가 존재하였다. 예측오차 분산분해 방법을 사용한 분석결과에서는 종합주가지수의 분산을 예측하는데 있어서 이들 거시경제변수들의 설명력이 매우 높게 나타났다. 또한 우리나라의 주식시장에서는 금리, 국제원유가격, 경상수지 등의 요인보다는 원 달러 환율, 소비자물가지수, 산업생산의 비중이 더 크다는 사실을 알 수 있었다. 우리나라의 자본시장에서는 1997년 말 외환위기를 전후로 하여 현저한 구조적 변화가 존재하였기 때문에 백터오차수정모형을 설정할 때에는 외환위기 이전기간과 이후기간으로 나누어서 분석하는 것이 더욱 타당함을 확인할 수 있었다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.290-293
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• 2003

The field organization management in construction industry is very important factor improvement and cost reduction. But, until now, evaluation methods on the existing field organization did not make ready and endeavor of organization betterment was insufficient in construction industry. The purpose of this study to provide basic data for reasonable selection and evaluation of the field manager through analyzing operation status of the existing field organization in apartment and office building project by interview and questionnaire on the 22 construction companies. This study presented optimal proposal on the selection and evalution of field manager for productivity improvement and cost reduction by means of efficient construction progress in apartment and dffice building project.

• KDI Journal of Economic Policy
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• v.16 no.1
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• pp.119-148
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• 1994

본(本) 연구(硏究) 1960년대말 이후 1980년대초 기간중에 민영화(民營化)된 공기업(公企業)에 대하여 민영화(民營化)가 개별기업(個別企業)의 생산효율성(生産效率性)에 미친 효과를 회귀분석모형(回歸分析模型)에 의하여 추정하고, 추정결과를 토대로 향후 정부의 바람직한 민영화정책의 방향을 제시하고자 한다. 본(本) 연구(硏究)의 분석결과(分析結果), 공기업민영화(公企業民營化)는 대한통운, 대한항공, 대한재보험, 그리고 대한석유공사의 경우 개별기업의 생산효율성(生産效率性) 증진(增進)에 긍정적인 효과를 미쳤으나, 5대(大) 시중은행(市中銀行)의 경우 공기업민영화(公企業民營化)가 기업(企業)의 생산효율성(生産效率性) 제고에 미친 효과가 미미하여 통계적 신뢰성이 낮게 나타나거나 부정적(否定的)인 효과(效果)가 추정(推定)되었다. 이러한 분석결과(分析結果)에 근거할 때, 기업민영화(公企業民營化)가 항상 기업(企業)의 생산효율성(生産效率性) 증가(增加)에 기여할 것이라는 일반적인 믿음은 현실적안 근거가 부족하며, 일정한 조건이 충족되어야 그러한 믿음이 현실화될 수 있음을 알 수 있다. 민영화(民營化)가 바람직한 정책효과(政策效果)를 나타내기 위해서는 공기업민영화시(公企業民營化時) 기업소유권(企業所有權)의 민간이전뿐만 아니라 실질적인 경영권(經營權)의 이전이 수반되어야 하며, 민영화(民營化)와 더불어 정부(政府)의 각종 규제(規制)와 간섭(干涉)이 배제되어야 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.91-102
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• 2020

This study constructed production frontiers of inputs and outputs in a sequential manner, measured inefficiencies by applying a non-radial sequential weighted Russell directional distance function to these frontiers, and analyzed Luenberg productivity indices and the contribution of each of input and output factor based on these distances. The results are as follows. First, the productivity of banks increased due to technical changes after the global financial crisis. Second, productivity growth decreased between 2009 and 2014 due to technical changes after the recession, as previous studies have shown that technology progressed before the global financial crisis but then largely decreased or remained the same thereafter. After 2014, the productivity of banks improved. This result may be due to both technology improvement after 10 years of stagnation and reduction of inputs and non-performing loans. Third, the 3.6% annual of productivity growth for 10 years was comprised of 1.77% household loans, 0.67% corporate loans, 0.98% manpower, 1.18% non-performing loans, -0.5% total deposits, and -1.25% securities. Finally, this study has limitations since it could not control risks such as capital structure and interest volatility.