• 환경영향평가
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• 제4권3호
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• pp.41-48
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• 1995

In former times the protection of our environment didn't play an important role due to the fact that emissions and effluents were not considered as serious impacts. However, opinions and scientific measurements meanwhile confirmed that the impacts are more serious than expected. Thus measures to protect our earth has to be taken into consideration. A part of these measures in the Environmental Impact Assessment (EIA). One of the most important parts of the EIA is the collection of basic datas and the following evaluation. Experience out of the daily business of Gerling Consulting Group shows that the content of the EIA has to be revised and enlarged in certain fields. The historical development demonstrated that in areas in which the population and the industrial activities reached high concentration there is a high necessity to develop strict environmental laws and regulations. Maximum values of the concentration of hazardous materials were fixed concerning the emission into and water. Companies not following these regulations were punished. The total amount of environmental offences increased rapidly during the last decade, at least in Germany. During this development the public consciousness concerning environmental affairs increased as well in the industrialized countries. But it could clearly be seen that the development in the field of environmental protection went into the wrong direction. The technologies to protect the environment became more and more sophisticated and terms as: "state of the art" guided more and more to lower emissions, Filtertechnologies and wastewater treatment for example reached a high technical level-but all these sophisticated technologies has one and the same characteristic: they were end-of-the pipe solutions. A second effect was that this kind of environmental protection costs a lot of money. High investments are necessary to reduce the dust emission by another ppm! Could this be the correct way? In Germany the discussion started that the environmental laws reduce the attractivity to invest or to enlarge existing investments within the country. Other countries seem to be not so strict with controlling the environmental laws which means it's simply cheaper to produce in Portugal or Greece. Everybody however knows that this is not the correct way and does not solve the environmental problems. Meanwhile the general picture changes a little bit and we think it changes into the correct direction "End-of-the-pipe" solutions are still necessary but this word received a real negative touch and nobody wants to be brought into connection with this word received a real negative touch and nobody wants to be brought into connection with this word especially in connection with environmental management and safety. Modern actual environmental management starts in a different way. Thoughts about emissions start in the very beginning of the production, they start with the design of the product and modification of traditional modes of production. Basis of these ideas are detailed analyses of products and processes. Due to the above mentioned facts that the public environmental consciousness changed dramatically a continous environmental improvement of each single production plant has to be guarantied. This question is already an important question of the EIA. But it was never really checked in a wholistic approach. Environmental risks have to be taken into considerations during the execution of an EIA. This means that the environmental risks have to be reduced down to a capable risk-level. Environmental risks have to be considered within the phase of planning, during the operation of a plant and after shut down. The experience shows that most of the environmental relevant accidents were and caused by human fault. Even in highly protected plants the human risk-factor can not be excluded during evaluation of the risk-potential. Thus the approach of an EIA has to regard technical evaluations as well as organizational thoughts and the human factor. An environmental risk is a threat to the environment. An analysis of the risk concerning the organizational and human aspect however never was properly executed during an EIA. A possible solution could be to use an instrument as the actual EMAS (Environmental Management System) of the EC for more accurate evaluation of the impact to the environment during an EIA. Organizations or investors could demonstrate by an approved EMAS or even by showing their installment of EMAS that not only the technical level of the planned investment meets the requested standards but as well the actual or planned management is able to reduce the environmental impact down to a bearable level.

• 한국신뢰성학회:학술대회논문집
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• 한국신뢰성학회 2001년도 정기학술대회
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• pp.277-278
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• 2001

The successful operation of a product In service depends upon the effective provision of logistic support in order to achieve and maintain the required levels of performance and customer satisfaction. Logistic support encompasses the activities and facilities required to maintain a product (hardware and software) in service. Logistic support covers maintenance, manpower and personnel, training, spares, technical documentation and packaging handling, storage and transportation and support facilities.The cost of logistic support is often a major contributor to the Life Cycle Cost (LCC) of a product and increasingly customers are making purchase decisions based on lifecycle cost rather than initial purchase price alone. Logistic support considerations can therefore have a major impact on product sales by ensuring that the product can be easily maintained at a reasonable cost and that all the necessary facilities have been provided to fully support the product in the field so that it meets the required availability. Quantification of support costs allows the manufacturer to estimate the support cost elements and evaluate possible warranty costs. This reduces risk and allows support costs to be set at competitive rates.Integrated Logistic Support (ILS) is a management method by which all the logistic support services required by a customer can be brought together in a structured way and In harmony with a product. In essence the application of ILS:- causes logistic support considerations to be integrated into product design;- develops logistic support arrangements that are consistently related to the design and to each other;- provides the necessary logistic support at the beginning and during customer use at optimum cost.The method by which ILS achieves much of the above is through the application of Logistic Support Analysis (LSA). This is a series of support analysis tasks that are performed throughout the design process in order to ensure that the product can be supported efficiently In accordance with the requirements of the customer.The successful application of ILS will result in a number of customer and supplier benefits. These should include some or all of the following:- greater product uptime;- fewer product modifications due to supportability deficiencies and hence less supplier rework;- better adherence to production schedules in process plants through reduced maintenance, better support;- lower supplier product costs;- Bower customer support costs;- better visibility of support costs;- reduced product LCC;- a better and more saleable product;- Improved safety;- increased overall customer satisfaction;- increased product purchases;- potential for purchase or upgrade of the product sooner through customer savings on support of current product.ILS should be an integral part of the total management process with an on-going improvement activity using monitoring of achieved performance to tailor existing support and influence future design activities. For many years, ILS was predominantly applied to military procurement, primarily using standards generated by the US Government Department of Defense (DoD). The military standards refer to specialized government infrastructures and are too complex for commercial application. The methods and benefits of ILS, however, have potential for much wider application in commercial and civilian use. The concept of ILS is simple and depends on a structured procedure that assures that logistic aspects are fully considered throughout the design and development phases of a product, in close cooperation with the designers. The ability to effectively support the product is given equal weight to performance and is fully considered in relation to its cost.The application of ILS provides improvements in availability, maintenance support and longterm 3ogistic cost savings. Logistic costs are significant through the life of a system and can often amount to many times the initial purchase cost of the system.This study provides guidance on the minimum activities necessary to Implement effective ILS for a wide range of commercial suppliers. The guide supplements IEC60106-4, Guide on maintainability of equipment Part 4: Section Eight maintenance and maintenance support planning, which emphasizes the maintenance aspects of the support requirements and refers to other existing standards where appropriate. The use of Reliability and Maintainability studies is also mentioned in this study, as R&M is an important interface area to ILS.

• 경영정보학연구
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• 제13권3호
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• pp.47-63
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• 2011

스마트폰이 최근 일반 대중의 생활 속으로 빠르게 확산됨에 따라 스마트폰 서비스 품질에 대한 활발한 연구가 이루어져 왔다. 기존 연구들은 모바일 및 스마트폰 서비스에 대한 만족요인을 체계적으로 정리하고 유형화함으로써 이론적 토대와 이해의 폭을 넓혀주었다. 이들 연구는 주로 서비스에 대한 이용 동기 및 만족을 살펴봄에 있어서 사용자 행위의 긍정적인 한 측면만을 고려함으로써 "만족의 반대개념은 불만족이며 불만족하면 이들 서비스를 이용하지 않을 것이다"라는 가정을 바탕에 두고 접근하고 있다. 하지만 이와 같은 일차원적인 해석으로는 "과연 고객이 서비스가 충분하다고 해서 만족하는가?" 또는 "서비스가 불충분하다고 해서 만족하지 않는가?"의 대답에 "그렇다"라고 단언하기 어렵다. 본 연구는 만족과 불만족이 양극단에 존재하는 연속체가 아닌 사용자가 인지하는 다른 차원의 개념일 수 있다는 호기심에서 출발한다. 이에 본 연구에서는 Kano 모델의 분석방법을 활용 및 보완하여 스마트폰 서비스 만족요인들을 분류하는 틀을 제시하고자 하였다. 이를 위해 우선 스마트폰의 만족요인들을 선행연구를 바탕으로 추출하여 일원적 품질요인과 이원적 품질요인으로 구분한 뒤, 다시 이원적으로 구분된 요인들에 대하여 매력적 품질요인과 당연적 품질요인으로 분류하였다. 이 3가지 성격의 품질요인들로 분류함으로써 충족과 만족이 선형적으로 증가하는 일원적 요인뿐만 아니라 만족에 영향을 미치는 매력적 품질요인과 불만족에 영향을 미치는 당연적 품질요인이 존재한다는 것을 검증하였다.

• 콘크리트학회논문집
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• 제15권1호
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• pp.95-101
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• 2003

상대적으로 큰 비표면적으로 인해 야기될 수 있는 건조수축균열은 보통 포틀랜드시멘트를 사용한 라텍스개질 콘크리트(LMC) 및 초속경 시멘트를 사용한 라텍스개질 콘크리트(RSLMC) 덧씌우기에서 주요 관심사항이다. 우리나라에서는 LMC와 RSLMC의 현장 적용을 위해 강도와 내구특성 측면에서 활발히 연구되어 왔으나 건조수축특성에 관한 연구는 전무한 상태이다. 따라서, 본 논문의 목적은 LMC와 RSLMC의 건조수축특성에 관하여 시멘트 종류(보통 포틀랜드 시멘트, 초속경시멘트), 라텍스 혼입률(0, 5, 10, 15, 20%)을 주요 실험 변수로 하여 연구하고자 하였다. 양생방법으로는 60%의 상대습도와 $20^{\circ}C$의 온도로 하였으며, 건조수축용 시편은 디지털 Demec 게이지로 측정하였다. 실험 결과를 통하여 LMC와 RSLMC의 건조수축량은 OPC와 RSC보다 상당히 감소되는 것으로 나타났다. 이것은 콜로이드같은 라텍스의 특성이 수분 증발을 억제함으로써 향상되는 보습성과 라텍스 필름막에 의한 시멘트 수화물과 골재간의 상호연결작용으로 기인되는 것으로 판단된다.

• 지질공학
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• 제24권3호
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• pp.431-440
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• 2014

1993년 지하수법 제정 이후 정책은 지하수 보전관리를 우선하고 보조수원으로 제한적으로 활용하는데 초점을 두어왔으나, 최근 인구 증가, 물 수요 증가, 균등 분배 및 기후 변화 등으로 지하수댐, 강변여과 등의 개발 정책을 중요시 하게 되었다. 인구의 증가, 물 환경의 변화 및 위해성 증가 등은 물 산업이 급격히 증가하는 요인으로 작용하여 왔으며 물 산업의 투자 규모는 지속 증가할 것으로 전망되고 있다. 그 동안 국내 지하수 시장은 일반 개인 관정 개발과 먹는샘물이 주도해 왔으나, 최근에는 지질학 기원의 차별화된 지하수 특성을 활용한 신규 사업 영역(건강, 의학 등)으로 확대되고 있다. 향후 지하수 분야가 물 산업 클러스터 내의 핵심으로 자리 잡고 정보통신기술 및 의학 등과 연계한 연구 및 기술 개발을 적극 추진하여 공공 지하수 개발, 지하수 활용의 다변화 등이 적극 추진되어야 할 것이다.

• 환경영향평가
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• 제12권3호
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• pp.171-188
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• 2003

Environmental Impact Assessment(ElA) in Korea has been used to improve environmental conservation and decision-making since environmental impact statement(EIS) was introduced in 1981 with the promulgation of the Environmental Preservation Act in 1977. which replaoed the Pollution Control Act legislated in 1%3. Together with a rapid growth of environmental perception as well as the diversification of development activities, however, it has recently bring about a strong demand for a new assessment process related to the strategic level of policies, plan, programs. In order to overcome such a limit in ElA system, Prior Environmental Review System(PERS) was introduced for assessment of administrative plans mainly concerned with development projects in 1993. In 1999. the regulations for PERS have been established by an amendment of the Basic Environmental Policy Act.Therefore the foundation of EIA system to integrate environmental concerns in planning processes and project works has been refonned. However the results of the execution of PERS were somewhat insuffident due to the institutional and technical matters. As the world's attention turns to sustainability and the considerations of cumulative effects, the concept of strategic envirorunental assessment(SEA) has taken on more significance and urgency and increasing number of countries and international organizations now undertake some form of SEA. The term SEA, however, is variously defined and understood, generally it means a formal process of systematic analysis of the envirorunental effects of development policies, plans, programmes and other proposed strategic actions. This process extends the aims and principles of EIA upstream in the decision-making process, beyond the project level and when major alternatives are still open. In this paper, we are discussing the significance of SEA and its relevance to EIA and the international trends and institutionalization of SEA. In conclusion we are discussing the comprehensive developing plan for SEA in Korea, then proposing a plan to make institutional arrangements for its application.

• 한국공간정보시스템학회 논문지
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• 제11권2호
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• pp.170-176
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• 2009

U-Eco City 테스트베드 구축사업은 U-Eco City사업 단의 타 핵심과제에서 개발된 요소기술과 타 연구과제의 기술을 테스트베드에 적용하여 각 기술의 현장 적용 시 문제점을 파악하고 보완체계를 수립해 나감으로써 기술의 완성도를 높이고자 하는 것이 목표이다. 이와 함께 테스트베드 구축의 경험을 바탕으로 국내 지방자치단체 및 해외 시장에 U-Eco City 건설 경험을 체계화하여 이를 판매하고자 하는 목표가 있다. 이를 위해서는 U-Eco City 적용 기술 평가, U-Eco City 테스트베드 대상지에 대한 종합시설계획 수립, 상세계획 수립, U-Eco City 테스트베드 구축 및 모니터링 등 전 과정의 경험과 지식을 체계화하고, 이를 국내 및 국외 시장에 적용할 수 있는 U-Eco City 구축 가이드라인의 작성이 필요하다. U-Eco City 테스트베드 구축의 1차년도 연구목적은 U-Eco City 구축 가이드라인 작성을 위한 기초연구를 수행하는 것으로 기존 U-City 추진상의 문제점을 분석하고, 생태도시와 U-City와의 연계성을 파악하였으며, U-City 구축 단계를 체계화하고, 단계별 고려사항을 정리하였다.

• Journal of Korean Neurosurgical Society
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• 제61권3호
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• pp.363-375
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• 2018

Intraoperative monitoring (IOM) utilizes electrophysiological techniques as a surrogate test and evaluation of nervous function while a patient is under general anesthesia. They are increasingly used for procedures, both surgical and endovascular, to avoid injury during an operation, examine neurological tissue to guide the surgery, or to test electrophysiological function to allow for more complete resection or corrections. The application of IOM during pediatric brain tumor resections encompasses a unique set of technical issues. First, obtaining stable and reliable responses in children of different ages requires detailed understanding of normal age-adjusted brain-spine development. Neurophysiology, anatomy, and anthropometry of children are different from those of adults. Second, monitoring of the brain may include risk to eloquent functions and cranial nerve functions that are difficult with the usual neurophysiological techniques. Third, interpretation of signal change requires unique sets of normative values specific for children of that age. Fourth, tumor resection involves multiple considerations including defining tumor type, size, location, pathophysiology that might require maximal removal of lesion or minimal intervention. IOM techniques can be divided into monitoring and mapping. Mapping involves identification of specific neural structures to avoid or minimize injury. Monitoring is continuous acquisition of neural signals to determine the integrity of the full longitudinal path of the neural system of interest. Motor evoked potentials and somatosensory evoked potentials are representative methodologies for monitoring. Free-running electromyography is also used to monitor irritation or damage to the motor nerves in the lower motor neuron level : cranial nerves, roots, and peripheral nerves. For the surgery of infratentorial tumors, in addition to free-running electromyography of the bulbar muscles, brainstem auditory evoked potentials or corticobulbar motor evoked potentials could be combined to prevent injury of the cranial nerves or nucleus. IOM for cerebral tumors can adopt direct cortical stimulation or direct subcortical stimulation to map the corticospinal pathways in the vicinity of lesion. IOM is a diagnostic as well as interventional tool for neurosurgery. To prove clinical evidence of it is not simple. Randomized controlled prospective studies may not be possible due to ethical reasons. However, prospective longitudinal studies confirming prognostic value of IOM are available. Furthermore, oncological outcome has also been shown to be superior in some brain tumors, with IOM. New methodologies of IOM are being developed and clinically applied. This review establishes a composite view of techniques used today, noting differences between adult and pediatric monitoring.

• 벤처창업연구
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• 제6권4호
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• pp.111-135
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• 2011

사업계획과 경영성과는 높은 상관관계를 보인다는 주장이 이론적인 측면에서는 설득력을 얻고 있지만, 이를 실증적으로 보여주는 국내외의 연구들은 많지 않다. 본 연구는 이러한 점에 착안하여 한국 중소기업을 대상으로 사업계획의 구성요소를 파악하고 각 구성요소들이 경영성과에 미치는 영향이 우량기업과 비우량기업 집단 간에 차이를 보이는지 살펴봄으로써 사업계획과 경영성과의 관계를 실증적으로 규명하고자 하였다. 아울러 이들 영향력이 기업가유형과 기업의 발전단계에 따라 차이를 보이는지도 분석함으로써 연구의 유용성을 제고하고자 하였다. 사업계획의 구성요소들은 재무 및 관련시스템 요인과 제품화 및 판매 요인, 수익 및 품질 요인, 광고 및 유통요인, 경영이념 요인으로, 경영성과는 ROS(return on sales), ROA (return on assets), 시장점유율, 종업원 수의 개선정도로 측정하였다. 연구결과, 사업계획서의 구성요소들은 종업원 수 항목에서 우량기업집단과 비우량기업집단을 통계적으로 유의하게 구분하고 있었으며, 특히 분류집단 예측력이 높은 요인은 재무 및 관련시스 템 요인과 광고 및 유통 요인이었다. 하지만 ROS, ROA 및 시장점유율에서는 통계적으로 유의하 지 않았다. 경영성과에 미치는 영향력 측면에서 기술/장인 기업가는 제품화 및 판매 요인, 수익 및 품질 요인을, 일반/기회 기업가는 재무 및 관련시스템 요인, 광고 및 유통요인, 경영이념 요인의 영향력을 높게 평가하였으며, 모든 발전단계에서 경영이념 요인의 영향력이 가장 높았다. 여러 요인 가운데서도 특히 재무 및 관련시스템 요인과 광고 및 유통 요인은 기업가유형 간 및 발전단계 간에 통계적으로 유의한 차이를 보이고 있어 사업계획 수립 시 중점을 두어야 함을 시사하고 있다.

• 자원환경지질
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• 제47권3호
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• pp.275-289
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• 2014

가스하이드레이트가 육상 동토지역과 심해저 퇴적층에 막대한 규모로 부존되어 있음이 밝혀지면서 가스하이드레이트 연구개발 선도국가에서 수행한 최근의 가스하이드레이트 육상 및 해상 생산 시험 결과는 가스하이드레이트가 미래의 에너지 자원으로서 사용 가능성을 높이고 있음을 보여주고 있다. 캐나다 말릭 2002 프로젝트에서는 열수 순환법을 이용하여 5일간 약 $480m^3$의 가스를 생산하였고, 말릭 2006-2008 프로젝트에서는 감압법에 의해 6일간 안정적 연속 생산으로 $13,000m^3$의 누적 생산량을 보임으로서 감압법이 가스하이드레이트부터 가스를 생산하는 유효한 방법임이 입증되었다. 2012년도의 미국 알라스카 현장 시험은 $CO_2-CH_4$ 치환 (맞교환법)을 이용하여 $CO_2+N_2$ 혼합가스를 주입하고 메탄을 생산하는 최초의 시험으로서 약 $6,000m^3$의 혼합가스를 주입하여 일일 생산 최대 $1,270m^3$의 가스를 생산하였다. 최근의 가장 주목할 만한 성과로는 일본이 난카이 해구에서 2013년 3월 감압법을 이용한 세계 최초의 해상 생산 시험을 실시하고, 6일 동안 누적량 $120,000m^3$의 가스를 생산한 것이라 할 수 있다. 일본이 생산 시험을 위해 수행하였던 연구개발 결과와 기술적 이슈들은 2015년도에 생산 시험을 준비하고 있는 우리에게도 많은 시사점을 주는데, 특히 감압 시나리오에 따른 생산 공정 설계, 모래 유입 등 시험정 완결 기법, 생산시 지반 안정성 등 생산 시험 공정 기술 개발의 모든 공정 요소에 대한 면밀한 검토가 요구된다.