• Journal of the Korean Wood Science and Technology
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• 제15권4호
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• pp.1-11
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• 1987

한국산(韓國産) 활엽수재(潤葉樹材) 27과(科) 45속(屬) 82종(種)을 선정(選定)하여 이들 목부(木部)에 존재(存在)하는 결정(結晶)의 형태(形態) 및 분포(分布)를 조사(調査)함으로써 얻은 결과(結果)를 간단히 요약(要約)하면 다음과 같다. 1. 다면체형(多面體形)의 결정(結晶)이 가장 많이 관찰(觀察)되었으며 집정(集晶)도 종종 관찰(觀察)되었으나 주정(柱晶)은 극히 일부 수종(樹種)에서만 나타났다. 2. 이러한 결정(結晶)은 주로 축방향유조직(軸方向柔組織) 및 방사조직(放射組織)에 존재(存在)하였으며 수(髓), 타일로시스, 진정목섬유(眞正木纖維) 및 수반점(髓斑點)에서도 그 존재(存在)가 확인(確認)되었다. 3. 대부분의 결정세포(結晶細布)는 재분제(再分製) 및 확대(擴大)를 통하여 변형(變形)되므로써 결정(結晶)을 지니지 않은 세포(細胞)와 그 형태적(形態的)인 차이를 나타내었다.

• Journal of Korean Neurosurgical Society
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• 제49권6호
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• pp.377-380
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• 2011

A case of intradural extramedullary cavernous angioma is presented with headache, dizziness, and bilateral sensorineural hearing loss caused by an intracranial superficial hemosiderosis. It was incidentally found in a patient with a 3-month history of sustained headache, dizziness and a 3-year history of hearing difficulty. The neurological examination was unremarkable in the lower extremity. MR images showed an intracranial superficial hemosiderosis mostly in the cerebellar region. Myelography and MR images of the thoracolumbar spine revealed an intradural extramedullary mass, which was pathologically proven to be a cavernous angioma. T12 total laminoplastic laminotomy and total tumor removal were performed without any neurologic deficits. The patient's symptoms, including headache and dizziness, have been absent for three years. Intradural extramedullary cavernous angioma can present with an intracranial superficial hemosiderosis as a result of chronic subarachnoid hemorrhage.

• 경영과학
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• 제15권2호
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• pp.45-58
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• 1998

Enterprise resource planning(ERP) in nature entails large scale business process redesigns and the corresponding risks. To reduce such risks, enterprise modeling(EM) approach could be adopted through which ERP is planned and effectively implemented on a consistent basis throughout the entire organization. The scope of this paper is to report on EM experiences and lessons learned in the process of ERP implementation. Through a case study, this paper presents and EM methodology which takes due account of strategic business processes, information flows, organizational requirements, and their interdependencies. To assess the impact of distributed application scenarios on effective ERP implementation, alternative EMs have been created and evaluated whether they support information requirements for strategic decisions and day-to-day operational activities, core business processes, and business functions as required. Practical issues and problems raised in the EM process have been discussed.

• 대한족부족관절학회지
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• 제8권2호
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• pp.208-212
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• 2004

There have been many reports about surgical treatments of flexible flatfoot in children and acquired adult flatfoot deformity due to posterior tibial tendon dysfunction common in the 5th and 6th decades. However there has been a controversy for surgical treatment guideline for painful idiopathic flexible flatfoot deformities in young adults. Therefore, we present a 27-year-old female with severe painful idiopathic flexible flatfoot who was treated with medial sliding calcaneal osteotomy and subtalar arthroereisis using $Kalix^{(R)}$ (Newdeal SA, Vienne, France) endoprosthesis and had good clinical outcome with high patient satisfaction at 10 months follow-up postoperatively.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1995년도 춘계학술발표회 논문집
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• pp.59-64
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• 1995

The impediment in enhancing the ship safety and combating vessel-source marine pollution depends on the combination of the immediate and mediate factors. The former is mainly caused by human errors and failure in compliance with the international convention standards in operation of compliance with the international convention standards in operation of vessel. The latter by the attitudes and activities of some of the flay states taking little responsibilities with appropriate seriousness in policing their fleets due to the lack of implementing capability of adminstrations. So long as there exists a large size of variation in implementing capability of administration between flag states a globally remarked progress cannot expect to be made in assuring the ship safety and preventing the vessel-source pollution Therefore a new regulatory regime is suggested to be adopted by IMO to maintain high standard flag state adminstrations by recommending standard paradigm to member states so that the development of a implementing culture is encouraged and supported.

• 산업공학
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• 제12권3호
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• pp.374-381
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• 1999

In this paper, we propose an architecture of the DNC system for Shop Floor Control/Point of Production(SFC/POP). The DNC system to be presented this paper retrieves line-up sheets which include the drawing information, making a index database for line-up sheets, NC programs and tool adjustment data. And it is interface with a raw material, jig and tool information. Also, the DNC system transmits operation information to real workers rapidly, and supports realtime monitoring by collecting the state information of machines directly. In the analysis and design phases, this paper models realtime events using the state transition diagrams. In the implementation phase, we use the ORACLE DBMS(Database Management System) as the DBMS and Developer 2000 and Microsoft Visual C++ 5.0 as the programming tools.

• 한국생산제조학회지
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• 제22권6호
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• pp.901-907
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• 2013

The development of high-rise firefighting vehicles warrants thorough structural analysis for ensuring vehicle stability. A few structural analyses were carried out using CAD data, material properties, load conditions, and boundary conditions for evaluating the structural stability of an overloaded multi-aerial platform for firefighting and rescue. Structural analysis was performed with an analytical model consisting of a turntable, six booms, two jib booms, and a basket structure. This model was operated in eight modes. All simulation was performed using NASTRAN, a commercial code. As a result, we confirm that the position of local stress exceeds that of the yield strength. Therefore, stress concentration relaxation is possible by introducing reinforcing boom structures, changing the shape, or imparting a larger moment of inertia to the booms' cross sections.

• 수산해양기술연구
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• 제35권1호
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• pp.65-76
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• 1999

Our status of off-shore stow-net fishery is in face with many difficult problems; the lack of fisherman by evading the 3-D occupation, the safety accident by unskilled crew and old type fishing system. In order to solve those problems, it is necessary to save the man power and ensure the safety of fishing work by the effective utilization of power and automatization of fishing gear system. This is consists of the side drum driven by main engine, the net hauler, the bow and stern capstan, jib crane etc. Therefore, we suggest the design on unification of power device of fishing gear system as follows; (1) fishing system by uni-hydraulic power and (2) fishing system by electric motor and electro-hydraulic power.

• 한국수학사학회지
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• 제24권4호
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• pp.7-20
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• 2011

이 논문은 18~19세기 조선산학자(朝鮮算學者)의 산서인 홍정하(洪正夏)의 구일집(九一集), 남병길(南秉吉)의 유씨구고술(劉氏勾股術) 요도해(要圖解), 이상혁(李尙爀)의 차근방몽구(借根方蒙求)에 들어있는 구고술(勾股術)을 사용한 방정식 구성을 조사하여 조선산학(朝鮮算學)의 발전과정을 밝혀내는 것을 목적으로 한다. 중인 산학자 홍정하(洪正夏)의 위대한 업적이 제대로 전승되지 못하여 조선산학의 발전에 기여하지 못한 것을 드러낸다.

• 지식경영연구
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• 제16권3호
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• pp.103-128
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• 2015

This study sheds light on the role of corporate social responsibility in firms' growth by investigating how and what corporate social activities may flow down china auto industry market. This study results based on in-depth case studies from 5 international auto corporations suggest that positive diverse corporate social responsibility amplified that the influence of commitment to the customer on firm's brand loyalty and sustainable growth. The most important thing is that strategic corporate social responsibility activities including new venture creation support and national project program will have a positive influence on the firm's growth and brand reputation. We build on advanced solutions to examine the unique and joint activities of auto corporations based on china auto industry market and important factors affecting sustainable growth in auto corporations. Contributions and implication of this study for current and future corporate social responsibility research are discussed.