• Psychiatry investigation
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• 제15권12호
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• pp.1154-1161
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• 2018

Objective The present study aimed to investigate relationship among cognitive factors (working memory and processing speed) and fluid reasoning (Gf) in psychiatric patients using a standardized clinical tool. Methods We included the responses of 115 heterogeneous patients who were diagnosed with the MINI-Plus 5.0 and WAIS-IV/WMS-IV was administered. For our analysis, structured equation modeling (SEM) was conducted to evaluate which cognitive variables are closely related to the Gf. Results The results showed that the visual working memory was the strongest predictor of the Gf compared to other cognitive factors. Conclusion Processing speed was capable of predicting the Gf, when visual working memory was controlled. The inter-relationship among the Gf and other cognitive factors and its clinical implications were further discussed.

• 한국보건간호학회지
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• 제7권1호
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• pp.81-97
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• 1993

This study was carried out to analyze the factors of the perieved symptoms of fatigue of the industrial workers, to examine the inter-relatisnship of the above factors with their general charactenstics and the environments of working area for the examination of their health status and the effective health management of them. This study was undertaken from December 1 to December 20, 1990. The subjets were 495 workers who had worked at the Industrial complex located in Chonbuk Province. The result of this study were as follows: 1. The worker's percieved symptoms of fatigue were classified to the following seven factors; A) Musculo-Skeletal Symptoms, B) Neuro-Psychial Symptoms, C) Optical Symptoms, D) Heart Symptoms, E) Head Symptoms, F) Respiratory Symptoms, G) Genital Symptoms 2. Analysis of the inter-relationship of their percieved symptoms of fatigue with general characteristics; 1) The difference of distribution to their percieved symptoms of fatigue according to sexuality was significant; Female were higher than Male $(p{\leqq}0.001$, p<0.005) 2) The difference of distribution to their percieved symptoms of fatigue according to age was significant; Age group under 24 years of age were higher than the other's group (p<0.001). 3) The difference of distribution to their percieved symptoms of fatigue according to the level of education was significant; Workers who stand on a low intellectual were higher than workers on a high intellectual level. 4) The difference of distribution to their percieved symptoms of fatigue for a week was the highest when worked at sunday. 5) The difference of distribution to their percieved symptoms of fatigue for seasons was high at spring. 3. Analysis of the inter-relationship of their percieved symptoms of fatigue with the environments of working area. 1) The difference of distribution of their percieved symptoms of fatigue according to the working department was significant; Production workers were higher than office workers. 2) The difference of distribution of their percieved symptoms of fatigue related with working posture was significant; Sitting: Musculo-Skeletal symptoms (p<0.05), Optical symptoms (p<0.005) 3) The more dissatisfied with their's own duty they were, the higher became the distribution of their percieved symptoms of fatigue (p<0.001. p<0.005, p<0.05) 4) The more dissatisfied with their working condition they were, the higher became the degree of their percieved symptoms of fatigue (p<0.001. P<0.05) 5) The difference of distribution of their percieved symptoms of fatigue according to kinds of job was significant: Workers who has handled heavy materials were higher than who had not handled $(p{\leqq}0.001$, p<0.05). Workers who has handled chemical materials: Optical, symptoms $(p{\leqq}0.001)$. Workers who has handled dusty materials: Respiratory symptoms (p<0.01) 6) The environment of working area was significantly affected to the distribution of their percieved symptoms of fatigue: Workers complains of a illumination problem; Optical symptoms (p<0.005), Heart symptoms (p<0.005) Workers complains of a ventilation problem: Heart symptoms (p<0.05), Optical symptoms, Heart symptoms (p<0.01) Musculo-skeletal symptoms ($p{\leqq}0.001$)

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.90-94
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• 2007

건설 현장의 자재 위치 추적 기술은 건설 프로젝트의 생산성을 극대화시킬 수 있는 중요한 기술로서 현재 국내외적으로 많은 연구가 수행 중에 있다. 최근 들어 RFID(Radio Frequency Identification) 시스템을 이용하여 공급 사슬망 전반에 걸친 건설 자재에 대한 실시간 위치 추적에 대한 연구가 각광을 받고 있다. 그러나 짧은 인식거리, 저조한 인식율등의 문제로 바코드 대체 수준으로 그 활용이 미비한 상황이다. 본 논문에서는 인식거리르 보다 길게 하는 900MHz 대역의 RFID 시스템과 인식된 데이터를 무선 통신(Zigbee)을 사용하여 전달하는 RFID/USN 연동시스템 개발과 그 활용 방안을 제안한다. RFID/USN 연동 시스템을 건설현장의 자재관리에 시험적으로 적용, 실중 테스트를 수행함으로써 첨단 센싱 기술 및 전파식별 기술에 대한 현장 활용 가능 여부, 실증 테스트 시 발생하는 기술적 애로 사항 및 다양한 활용 방안을 도출하는 것을 목적으로 한다. 또한 원격지에 있는 현장 관리자를 위하여 기존 인프라네트워크를 이용하여 실시간 자재 및 장비의 위치 데이터를 관리자가 원할 경우 언제 어디서든 실시간으로 전달 가능하도록 이동통신망(CDMA: Code Division Multiple Access)과의 연동 시스템을 현장에서 적용 및 점검한다.

• 융합보안논문지
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• 제13권5호
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• pp.3-10
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• 2013

김정일시대 군사협상 분석 모델인 '항일유격대식 협상모델'을 활용하여 최근에 실시된 개성공단 실무회담 분석을 통하여 김정은시대에 개최될 군사협상의 지속과 변화를 제시하고자 한다. 특히, 개성공단 실무회담 분석을 통하여 김정은 시대의 경제분야 협상에서도 군사회담과 유사한 협상행태가 진행되고 있음을 확인할 수 있었다. 이와 같은 분석을 통하여 유추할 수 있는 사항은 김정은시대 군사협상에서도 김정일시대의 군사협상 범주에서 협상이 진행될 것이라는 사실이다. 근본적으로 북한은 변화의 길을 걷겠지만 현 시점에서는 기존의 전략문화를 변경하기 보다는 그 틀 속에서 군사협상 목적을 달성하려 할 것이다. 이러한 현상은 당분간 지속될 것이다. 향후 북한은 경제난 극복을 위하여 군사협상에 변화를 꾀할 것이다. 따라서 우리 정부의 군사협상에 대한 인식의 대전환이 있어야 할 것이다. 우리정부는. 대화와 협상을 유도하기 위해서 지속적으로 노력하여야 한다. 북한의 변화를 유도하기 위해서는 군사 협상에 적용할 수 있는 통일 전선논리를 활용한 경제 분야 협상 의제를 개발하여야 한다. 이를 이용하여 북한의 군사협상 정책결정자들에게 논리체계를 형성하여 준다면 새로운 군사협상의 틀을 만들 수 있을 것이다. 북한은 변화를 통한 경제적 교류협력을 보장하는 길이 생존하고 발전하는 길임을 인식하여야 한다.

• 통상정보연구
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• 제7권4호
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• pp.135-156
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• 2005

Since July 7 mutual declaration in 1988 which is a landmark for South-North Korean relations, Inter-Korean Trade has been set out. During the period, the Inter-Korean Trade has been ups and downs depending on the Inter-Korean relations and economic situation of both countries. South Korea became one of the major three trading countries of North Korea's trading partners in 2000, when the sum of annual trade volume reached the record 425million US dollars. A rapidly increasing number of countries including North Korea are developing national policies and strategies to promote the digital economy, recognizing the potential benefits of e-business as an engine of growth and development. However, the trade structure of South-North Korea remains very simple in terms of its contents. Furthermore trade procedure many limitations especially electronic commerce in North Korea has many obstacles to working properly. The information in Inter-Korean trade cannot be shared in common. South Korean firms have suffered repeatedly trial and error and excessive competition took place among South Korean firms. Institutional inertia related to mutual trade, political and military Impacts on Inter-Korean economic relations, abnormal industrial structure of North Korea and insufficiency of SOC could be mentioned as major problems in Inter-Korean trade as well. Several measures should be taken in order to cope with those problems. First of all, South Korean government should provide valuable information to business firms about North Korean economy and business environments. It is suggested that forums related to inter-Korean trade hold in regular base between South and North Koreas and establish the system of business information sharing. Second, the government should improve various laws and regulations to respond to the realistic needs of inter-Korean trade. That is, detailed measures should be taken to guarantee investment in electronic commerce. Third, it is desirable to start with the mutual agreement between South and North Korea.

• 수산해양교육연구
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• 제25권2호
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• pp.301-306
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• 2013

In this paper, cycle performance analysis of two-stage compression and two-stage expansion refrigeration system using alternative freon refrigerants is presented to offer the basic design data for the operating parameters of the system. Alternative freon refrigerant for freon refrigerant R22 were used as working fluids in this study. The operating parameters considered in this study included evaporation temperature, condensation temperature, subcooling degree, superheating degree, and mass flow rate ratio of inter-cooler. The main results were summarized as follows : The COP of two-stage compression and two-stage expansion refrigeration system increases with the increasing subcooling degree and mass flow rate ratio of inter-cooler, but decreases with the increasing evaporating temperature, condensing temperature and superheating degree. Therefore, subcooling degree, mass flow rate ratio of inter-cooler of two-stage compression and two-stage expansion refrigeration system using alternative freon refrigerants have an effect on COP of this system.

• Steel and Composite Structures
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• 제37권3호
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• pp.273-289
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• 2020

Due to the unique construction method of modular steel buildings (MSBs) with units prefabricated fully off the site and assembled quickly on the site, the inter-module connection for easy operation and overall performance of the system were key issues. However, it was a lack of relevant research on the system-level performance of MSBs. This study investigated the seismic performance of two-storey modular steel structure with a proposed vertical rotary inter-module connection. Three full-scale quasi-static tests, with and without corrugated steel plate and its combination, were carried out to evaluate and compare their seismic behaviour. The hysteretic performance, skeleton curves, ductile performance, stiffness degradation, energy dissipation capacity, and deformation pattern were clarified. The results showed that good ductility and plastic deformation ability of such modular steel structures. Two lateral-force resistance mechanisms with different layout combinations were also discussed in detail. The corrugated steel plate could significantly improve the lateral stiffness and bearing capacity of the modular steel structure. The cooperative working mechanism of modules and inter-module connections was further analyzed. When the lateral stiffness of upper and lower modular structures was close, limited bending moment transfer may be considered for the inter-module connection. While a large lateral stiffness difference existed initially between the upper and lower structures, an obvious gap occurred at the inter-module connection, and this gap may significantly influence the bending moments transferred by the inter-module connections. Meanwhile, several design recommendations of inter-module connections were also given for the application of MSBs.

• 한국콘텐츠학회논문지
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• 제9권5호
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• pp.156-165
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• 2009

이 연구는 치과위생사의 정서적 조직몰입에 영향을 미치는 근로생활의 질 요인을 분석함으로써 이들의 근로생활의 질 향상과 더불어 조직에의 애착과 몰입을 추구하고 근로생활의 보람과 궁극적인 삶의 만족도를 높이는 방안을 찾고 치과경영에서의 인적관리의 방향성을 제시하고자 하였다. 조사대상은 부산 경남 지역에 위치한 치과 의료기관에 근무하는 치과위생사를 대상으로 설문조사 하였고 197부의 설문지를 연구에 이용하였다. 연구결과 근로생활의 질과 정서적 몰입의 구성요소 간 요인별로 높은 상관관계를 보였고, 정서적 조직몰입에 영향을 미치는 근로생활의 질 요인 분석 결과 근무환경, 인간관계, 사회적 유익성이 정서적 조직몰입에 유의한 영향을 미쳤다. 이에 치과 의료기관은 인적 경영관리 차원에서 근무환경 및 복리후생 개선과, 직원 간 원활한 인간관계를 형성할 수 있도록 하며, 정기적 사회봉사나 지역주민을 위한 서비스 제공으로 자긍심과 애사심을 고취시키고, 치과위 생사들은 보다 긍정 적 인 생각으로 근무기관과 자기발전을 위해 끊임 없는 노력으로 업무능력 향상과 직업적 가치를 높이는 것이 중요하다고 생각된다.

• 한국치위생학회지
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• 제18권6호
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• pp.863-878
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• 2018

Objectives: The purpose of the study was to investigate the regional distribution and working environment of clinical dental hygienists in Korea. Methods: From 2015 to October 2016, a questionnaire was completed by 5,708 participants and the data were analyzed. Results: The region with the largest increase in clinical dental hygienist employees compared to graduates is Seoul. More than 50.0% of clinical dental hygienists working for less than 1.8 million won in the payroll period of 4-6 years were working in the Gwangju Jeonnam, Jeonbuk, and Gangwon regions. In addition, incentives and bonuses were rarely provided by localities and agencies. Although 43.4% provided both parental leave and maternity leave. Conclusions: In order to solve the fundamental problem of inter-regional movement and employee turnover rate of clinical dental hygienists, as well as address the regional imbalance in labor supply and demand, efforts should be made for institutional improvement to strengthen management and implementation.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
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• pp.269-282
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• 2004