• The Korean Journal of Pain
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• 제28권1호
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• pp.11-21
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• 2015

Background: Epidural injections are performed utilizing 3 approaches in the lumbar spine: caudal, interlaminar, and transforaminal. The literature on the efficacy of epidural injections has been sporadic. There are few high-quality randomized trials performed under fluoroscopy in managing disc herniation that have a long-term follow-up and appropriate outcome parameters. There is also a lack of literature comparing the efficacy of these 3 approaches. Methods: This manuscript analyzes data from 3 randomized controlled trials that assessed a total of 360 patients with lumbar disc herniation. There were 120 patients per trial either receiving local anesthetic alone (60 patients) or local anesthetic with steroids (60 patients). Results: Analysis showed similar efficacy for caudal, interlaminar, and transforaminal approaches in managing chronic pain and disability from disc herniation. The analysis of caudal epidural injections showed the potential superiority of steroids compared with local anesthetic alone a 2-year follow-up, based on the average relief per procedure. In the interlaminar group, results were somewhat superior for pain relief in the steroid group at 6 months and functional status at 12 months. Interlaminar epidurals provided improvement in a significantly higher proportion of patients. The proportion of patients nonresponsive to initial injections was also lower in the group for local anesthetic with steroid in the interlaminar trial. Conclusions: The results of this assessment show significant improvement in patients suffering from chronic lumbar disc herniation with 3 lumbar epidural approaches with local anesthetic alone, or using steroids with long-term follow-up of up to 2 years, in a contemporary interventional pain management setting.

• 한국공간정보시스템학회 논문지
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• 제5권2호
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• pp.23-31
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• 2003

정보화 사업의 결과로 전 국토에 대한 수치지도 및 여러 가지 주제도 제작이 완료되었다. 건물도로 및 교량 등과 같은 인공적 지형지물과 하천과 같은 자연적 지형지물을 포괄하는 모든 지형지물을 체계적으로 관리하고 활용하기 위한 체계화된 관리체계가 필요하나, 지형지물의 관리기관별 DB가 불일치하여 국가적 지리정보체계의 통합관리가 어려운 실정이다. 그러므로 본 연구에서는 지형지물의 관리, 검색, 활용에 공통키로 사용될 수 있고, 또한 식별자만으로 위치 판단이 가능하고, 정보의 일관성 및 NGIS DB의 체계적 관리를 할 수 있는 지형지물 유일식별자(UFID)를 부여하는 체계와 방법을 제시하였다.

• 한국구조물진단유지관리공학회 논문집
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• 제9권3호
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• pp.129-138
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• 2005

본 논문은 사장교에서 모니터링 시스템을 통해 획득한 가속도 자료를 이용하여 케이블 관리기준 장력을 결정하기 위한 방법을 제시한다. 현재 한국의 많은 장대교량에 모니터링 시스템이 설치되어 있다. 모니터링 시스템은 교량의 이상현상이나 손상을 진단하고 관리주체에 경고하기 위해 설치된다. 사장교에 있어서는 그 기하학적인 형상 때문에 케이블 장력이 교량 이상징후의 중요한 지시가 될 수 있다. 만약 케이블 장력관리치가 너무 높거나 또는 너무 낮게 설정되면, 모니터링 시스템은 교량의 이상징후를 적절하게 경고하지 못할 것이다. 일반적으로, 관리치는 경험이나 공학적 판단에 의해 결정된다. 그러나 본 논문에서는 케이블 장력에 대한 확률분포모형과 신뢰성 해석에 기초한 새로운 케이블 장력관리치 설정에 대한 방법을 제시한다. 제안된 방법은 적용성 검토를 위하여 실제 콘크리트 사장교에 적용되었다.

• 대한조선학회논문집
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• 제51권2호
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• pp.130-137
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• 2014

As one of the largest shipbuilding company in the world, STX Offshore & Shipbuilding currently developed an inventory managing system for steel-plates, which is applied to their steel stock yard. In a traditional way to manage steel yard, almost every work has been done by manually. The manual steel-plate piling process caused some problems such as process delay due to piling errors and the uncertainty of work plan due to lack of information. To solve these problems, we developed an integrated inventory managing system based on real-time crane tracking system which automatically updates steel-plates' piling status. We built the integrated steel-plate database, developed several programs including steel-plate input program, real-time steel-plate monitoring program and steel-yard management program, and constructed hardware system for tracking magnetic cranes. As a result, a supervisor of steel-yard can manage the inventory of steel-plates efficiently and furthermore plan an efficient piling schedule and crane working schedule.

• 디지털융복합연구
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• 제11권11호
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• pp.767-774
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• 2013

전기자동차 보급이 확대됨과 동시에 충전이 특정 시간대에 몰리거나 전력수요가 높은 시간대에 늘어나면 전력수급 균형이 불안해질 수 있다. 따라서 전기자동차 충전으로 인한 전력수요가 증가함과 동시에, 전기자동차의 전력수요를 분산시키고, 전기자동차 배터리의 여분의 전기를 활용할 수 있는 스마트그리드 구축이 중요해진다. 아직 국내에서 스마트그리드가 전기자동차의 전력망 영향 관리에 어느 정도 영향을 미치는지에 대해서는 정량적 연구가 미흡한 실정이다. 본 연구는 스마트그리드를 통한 전기자동차의 전력망 영향 관리 효과를 정량적으로 분석하고 정책적 시사점을 제시하였다. 결과적으로 스마트그리드는 전기자동차의 전력망 영향을 효과적으로 관리할 수 있었다. 전력시장 구조와 규제 프레임워크는 스마트그리드 기술의 실증과 상용화 촉진을 뒷받침할 수 있어야 할 것이다.

• 수산경영론집
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• 제36권1호
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• pp.139-153
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• 2005

Marine fish aquaculture has been introduced on the East sea since 1964. The production volume of the marine aquaculture has been increasing drastically since 1990 with the technological improvements and the introduction of new species. However, the increasing costs of feed, seedlings and medical supplies and the decreasing prices due to the increase in the imports and domestic production have decreased the profits in the aquaculture business. Futhermore, the damage from the natural disasters such as red tides and typhoons has accelerated the exit from the business. Even though managing abilities to overcome the business crisis caused by the above factors are required, business managers based on the small scale family businesses do not have enough managing abilities to deal with the difficulties in the business. On the other hand, advanced countries in the marine aquaculture such as Norway have reached the stage where the managing abilities of marine aquaculture are similar to those in the manufacturing industry. And the number of large scale aquaculture farms with developed technologies and advanced marketing strategies in those countries is increasing. Considering that the marine aquaculture in Japan under the similar fishery systems of Korea has developed the state-of-the-art management skills or lead to large scale management, it is difficult to expect the decrease in the production costs under the small scale family business in Korea and this will lead to the decreasing competitive advantage over the imported seafood. Therefore marine aquaculture in Korea needs to increase the economy of scale to acquire the competitive advantage. This study addresses the possibility of introducing the large scale aquaculture system in Korea by analysing the factors and process of leading to large scale businesses in the aquaculture in Japan.

• 한국식생활문화학회지
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• 제28권4호
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• pp.371-385
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• 2013

This study aimed to classify attendants of a wine training institute according to loyalty for wine training service program and to deduce the core managing points in a wine training program by IPA (Importance-Performance Analysis). Self-administered questionnaires were collected from 192 trainees and statistical data analysis completed using SPSS ver. 18.0. As a result of clustering analysis based on trainee loyalty from both attitude and behavioral perspectives, four classification groups were identified: a "genuine" loyalty group, a "latent" loyalty group, a "mendacious" loyalty group, and a "low" loyalty group. For the genuine loyalty group, the importance of total service quality was 4.32 on average whereas the performance was measured as 4.22; thus there was little difference between importance to quality and performance. However, for the other three groups, especially the low loyalty group, there were significant wide gaps between importance to quality and performance. According to IPA, different service quality items were posted on the 'Focus here' quadrant (a domain with high service quality importance but low performance) by group, while the other three quadrants had several common items regardless of the group. Finally, the core quality managing points were different depending on the level of trainee loyalty. Therefore, it is necessary to plan and conduct a wine training program that reflects the characteristics and needs of its students, which will lead to a differentiated management strategy according to the level of loyalty.

• 지역사회간호학회지
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• 제12권3호
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• pp.647-660
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• 2001

Forming health care management model in small-scale enterprises was the purpose of this study. For the purpose, we tried to investigate the characteristics of small-scale enterprises and analyzed the pattern of their health care management. The results are as follow: 1. The strength of health managing agency and technical supporting program lies in team approach by specialized manpower. However, if the liaison between each part of the organization is not smooth, the overall management will be very difficult. 2. Small scale enterprises are characterized by their short life after the establishment, use of rental building, lack of welfare facilities, weakness in sanitary management and aggregation of factories of similar type of industry. Because of these characteristics, it is very difficult to solve problem basically, such as improvement of working environment. Therefore, it is important to focus on health education and community based approach. 3. Many workers in small-scale factories are in middle and old age. They have health problems mainly related to personal habits. Implementation of an appropriate health promotion program is needed. 4. The number of workplaces, which should be managed by health managing agent. is increasing rapidly. But the number of health managing agent is limited. In the aspect of the requirement of manpower and equipment, training personal agent is more urgent than founding institutional agent. 5. The uniform method of health management hampers the choice of employer and workers. The types of provision of health management should be diversified. 6. For an efficient management, a frequent visit of personal agent and the following referral to a specialist should be done. The specialists in charge of secondary management are from the field of occupational medicine, occupational hygiene, ergonomics, etc. 7. The health management of small-scale facilities should have six components. They are community-based approach, multi-disciplinary cooperative system, program based on the need of recipient, forming partnership of employer and worker, change of lifestyle, and evidence-based program.

• 한국경제지리학회지
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• 제5권1호
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• pp.89-104
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• 2002

이 논문은 중국의 개혁.개방 이후 외국의 자본, 기술, 관리방식을 도입하여 경제발전 및 지역개발을 이루기 위한 목적으로 설치된 개발구의 설치과정과 운영시스템에 관한 것이다. 중국에서 개발구는 지역개방의 확장에 따라 양적 유형적 측면에서 지속적으로 확대되어 개방지역의 체제변화에 선도적 역할과 함께 지역경제성장의 핵심부분으로 발전하고 있다. 개발구를 조성하는 과정에서 중앙정부 및 지방정부의 조정과 통제는 초기에 강력한 영향력을 미쳤다. 그러나 현재 개발구내의 경제활동 및 기업활동은 자본주의 시장원리에 의해 운영되고 있으며, 개발구의 효율성을 제고하기 위하여 중앙정부 또는 지방정부의 통제는 최소화되는 한편 개발구 관리위원회의 자율성은 강화되고 있다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
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• pp.465-468
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• 2008

최근 VOD 시장규모가 커지고 증가되고 있으며, 우리나라 대부분의 공공, 교육기관, 사업자들은 Microsoft사의 Windows OS에 종속된 wmv 기준의 콘텐츠관리시스템으로 서비스를 제공하고 있으며 wmv 기반의 VOD CMS는 끊김이 잦고, 스크린의 크기가 작을 뿐만 아니라 화질 또한 열악한 고질적인 문제점을 가지고 있다. 이러한 단점을 극복하기 위하여 H.264라는 영상 코덱과 스트리밍 엔진을 통해 고화질, 고음질, 스크린 크기 문제 해소, 버퍼링 시간의 최소화를 통해 문제점을 해결하는 기술이 개발되었으나, 콘텐츠의 체계적인 관리나 배포가 어렵다는 또 하나의 문제점이 있다. 금번 연구를 통해 이러한 문제점들을 해결하기 위하여 새로운 신기술인 H.264 코덱을 접목하고 wmv 시장에서 한계성을 가지고 있던 영상 VOD 콘텐츠 관리를 위한 시스템을 설계함으로써 국내 온라인 VOD 콘텐츠 통합관리기술을 확보하여 전 세계 H.264 고화질 영상 VOD 관리 시장의 중요한 입지를 선점하는 효과가 있을 것으로 기대된다.