• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2212-2215
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• 2001

Nowadays, environmental protection is increasingly concerned more than ever before. Therefore, it is prerequisite both to monitor some data and control them on-line for reducing the environmental pollution. In this paper, internet-based 3-dimensional monitoring system which utilizes PCS phones for wireless data communication with server computer is presented and its feasibility is tested by physical installation.

• 패션비즈니스
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• 제12권6호
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• pp.61-72
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• 2008

The UV-protection effect of green-tea dyed fabrics was reported in our previous studies. The chitosan was used as a natural mordant of cellulose fiber for green tea extract because chitosan is a natural bio-polymer. The increase in the UV protection property of summer cellulose fabrics, cotton and linen, upon the repetition of chitosan mordanting and green tea dyeing was observed. However, the physical property change would be followed by this repeated wet processing of the cellulose fabric. Therefore, the physical changes of the chitosan mordanted and green tea dyed cotton and linen fabrics were evaluated by KES-FB system. Tensile, shear, bending, compression, and surface characteristics were tested upon the repetition of mordanting and dyeing treatments. Linearity of tensile force increased in the treated cotton and linen samples. Tensile energy and resilience decreased in all treated fabrics. Shear stiffness increased in the treated cotton and linen in general. Shear hysteresis was increased in all cotton samples and some linen samples. In cotton, the bending rigidity in all treated cottons increased except C3G3. As the chitosan mordanting numbers increased, the bending rigidity tended to decrease. In linen, the bending rigidity and hysteresis increased in all treated samples. Compressional energy and resilience increased as the number of chitosan mordanting increased both in cotton and linen. This could be the result of the increase in thickness upon chitosan mordanting. Surface coefficient of friction increased in the treated cotton and linen in general. Surface roughness tended to increase in cotton.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2008년도 학술발표회 논문집
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• pp.449-453
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• 2008

This research focused on analyzing and comparing between the results of hydraulic physical modeling and the results of numerical modeling of Grass Concrete which is newly developed in-situ block system. The physical model was built as a scale of 1:50 by Froude similitude measuring the water levels and the water velocities for before and after vegetation and the effects were analyzed after reviewing the results. In consequence, the water velocities were observed to decrease meanly 19.1%, and the water depth were determined to increase meanly 27.8% in case of the of design flood, $Q=200m^3/sec$. Moreover, the velocities were produced reduction effects of 27.2%, and the water levels were derived from addition effects of the highest 31.3% in case of the probability maximum flood(PMF), $Q=600m^3/sec$. To verifying the hydraulic physical modeling, the numerical modeling was conducted for a close examination of before and after vegetation. HEC-RAS model was for 1 dimensional numerical analysis and RMA-2 was for 2 dimensional numerical analysis. The results of the numerical simulation, under the condition of roughness coefficient calibration, shows similar results of the physical modeling. These satisfactory results show that the accomplished results of hydraulic modeling and the predicted results of numerical modeling corresponded reasonably each others.

• International Journal of Automotive Technology
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• 제7권1호
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• pp.51-59
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• 2006

The high potential for injury involved in rollover accidents warrants the development of a system to protect passengers against such events. To effectively implement such a protection system, it is first necessary to determine rollover criteria (i.e., real time states which indicate the occurrence of rollover events). In this paper, several rollover criteria have been developed based on simplified physical models. Such accidents are first classified into two types, untripped and tripped, according to the main cause that initiates the rollover. Characteristics of these rollover situations are identified by applying appropriate principles of dynamics to corresponding simplified physical models. Two main rollover criteria, Rotational Kinetic Energy (RKE) and Initial Kinetic Energy (IKE), are then introduced based on these characteristics. ADAMS/View simulations have been performed to verify the feasibility of the introduced rollover criteria. ADAMS/Car simulations have also been conducted to get more realistic rollover data with a complete vehicle model. Results of these experiments reveal that our established criteria prove useful for predicting whether actual rollover occurs or not.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.657-660
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• 2021

영상정보처리기기(CCTV)는 민감 정보를 수집, 전송, 저장하는 데 있어서 관리적, 물리적, 기술적 측면에서 포괄적으로 보안관리가 이뤄져야 한다. 이를 위해 영상정보처리에 관련된 암호기술, 기술인증, 보호기술, 보안장비에 대한 적용 기준이 필요하다. 본 논문에서는 영상정보처리기기에 관련된 다양한 보안기술, 인증제도를 분석하여 영상정보처리기기의 구축 및 운영에 적용하여 포괄적 보안관리를 위한 암호·인증·보호·체계(CCPS; Cryptography·Certification·Protection·System) 모델을 제안한다.

• 한국중재학회지:중재연구
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• 제27권4호
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• pp.199-222
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• 2017

Currently, many punitive damages (or statutory damages) and class action laws are discussed in relation to the consumer damage relief system. It is in the background of the argument that the introduction of such a victim relief system will solve many small and large consumer damages. There are many cases in which the punitive damages compensation or the class action system are introduced in relation to the food safety damage naturally. Although the introduction of such a system can clearly help the consumer to relieve large-scale damage, it can not solve all the problems at once because the company can reject the system despite the introduction of such a system. In particular, class action lawsuits should have the same type of damage, but most of the damage caused by food safety is accompanied by physical harm, resulting in various complications such as the physical characteristics of the victim, the health environment. The class action system may not provide a solution in that the content and type of the damage may be different. In this regard, this study aims to investigate the introduction of the food safety damage relief system through the introduction of an administrative dispute settlement system by an administrative agency that occupies an absolute position in the existing consumer protection from this point of view. In reality, the Food and Drug Administration, which is the largest among government agencies related to food, operates a passive attitude consumer protection system such as function like guidance, supervision and surveillance. And it is necessary to make a complementary proposal. In the current law, there is only a small part of the consumer protection work that is positively legal, and even after the damage is scientifically identified, it is not possible to present the solution to the damage suffered by the consumer through legislation. This is a fact that has been raised. In this paper, we propose a reasonable and rapid disaster relief procedure through a separate mechanism within the administrative agency, which is the administration agency, that the dispute settlement procedure due to food safety damage is insufficient by solving the case through the court through counseling, dispute adjustment and civil proceedings. In order to solve the problem of food insecurity and the food industry, various ways of rational solution of the problem were considered. The possibility of (1) Establishment of a food safety dispute resolution committee; (2) Establishment of a food safety disaster relief committee; and (3) Establishment of a food safety disaster relief committee was discussed. In addition, a plan for the creation of a food damage compensation fund was also proposed.

• 한국재난정보학회 논문집
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• 제11권4호
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• pp.475-486
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• 2015

본 연구에서는 직원들의 직위에 따른 기업보안 활동 중 산업기밀 유출 방지에 영향을 미치는 기업정보보호활동 통제요인을 분석하고자 하였다. 정부, 공공기관, 민간기업 종사자를 대상으로 내부 정보시스템에 대한 사용자 및 관리자 354 명을 정보보호활동 36문항, 산업기밀유출방지 10문항을 조사 하여 회귀분석을 실시하였다. 산업기밀 유출 통제 활동에 영향 미치는 기업정보보호활동인식으로 사원은 물리적 통제, 환경적 통제, 인적 통제, 소프트웨어통제를 대리는 환경적 통제, 하드웨어 통제, 과장은 하드웨어통제, 환경적 통제, 부장급 이상은 물리적 통제 순서로 보안통제활동 인식을 나타났다. 사원, 대리, 부장 직위이상에서는 기술적 통제 요인이 과장 직위에서만 시스템 통제 요인이 산업기밀유출 방지 통제활동에 가장 많은 영향을 미친다고 지목하였다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권2호
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• pp.561-568
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• 2014

Background: The skin is the largest body organ that regulates excretion of metabolic waste products, temperature, and plays an important role in body protection against environmental physical and chemical, as well as biological factors. These include agents that may act as oxidants or catalysts of reactions producing reactive oxygen species (ROS), reactive nitrogen species (RNS), and other oxidants in skin cells. An increased amount of the oxidants, exceeding the antioxidant defense system capacity is called oxidative stress, leading to chronic inflammation, which, in turn, can cause collagen fragmentation and disorganization of collagen fibers and skin cell functions, and thus contribute to skin diseases including cancer. Moreover, research suggests that oxidative stress participates in all stages of carcinogenesis. We report here a summary of the present state of knowledge on the role of oxidative stress in pathogenesis of dermatologic diseases, defensive systems against ROS/RNS, and discuss how physical activity may modulate skin diseases through effects on oxidative stress. The data show duality of physical activity actions: regular moderate activity protects against ROS/RNS damage, and endurance exercise with a lack of training mediates oxidative stress. These findings indicate that the redox balance should be considered in the development of new antioxidant strategies linked to the prevention and therapy of skin diseases.

• 한국지반환경공학회 논문집
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• 제15권11호
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• pp.53-59
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• 2014

낙석방지망에 대한 기존 연구 결과에 의하면 종래의 낙석방지망에서 발생되는 대표적인 문제점으로 이완성이 없는 횡방향 와이어로프에 의해 발생되는 낙석 중량의 누적현상, 지반과 낙석방지망의 결합지점 부족으로 인한 인발지지력 부족, 낙석의 과도한 충격으로 인한 철망의 빈번한 파손, 낙석방지망의 유지관리 시 철망의 재사용의 어려움 등이 보고되고 있다. 선행 연구를 통해 실내에서의 인장력과 현장실험이 실시되어 새로운 낙석방지망의 효과를 검증한 바 있다. 선행연구에 이어 본 연구에서는 기존의 사각낙석방지망과 비교하여 충격 완화형 육각 낙석방지망의 전체적인 구조적 안정성과 성능을 수치해석적 방법을 통해 점검하는 것에 그 목적이 있으며, 이를 충분히 검토하고 결과를 얻을 수 있도록 수치해석 프로그램이 설정되었다. 수치해석 결과를 종합해볼 때 동일한 단일 셀 간격 뿐만 아니라 동일한 면적비로 비교하더라도 육각 낙석방지망이 사각 낙석방지망에 비해 하중분배 효과가 우수한 것으로 나타났으며, 육각 낙석방지망은 낙석하중이 작용할 경우 이를 효율적으로 분산시킴으로써 과도한 하중 집중이 발생하는 것을 피할 수 있어 장기적인 안정성 확보에 유리할 것으로 판단된다.

• 정보관리학회지
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• 제38권1호
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• pp.191-219
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• 2021

4차산업 혁명으로 상징되는 IT 기술의 발달과 전자정부의 등장 및 환경의 변화 등에 따라 기록관리 영역에도 급격한 변화가 나타나고 있다. 대부분의 정부산하 공공기관은 전자문서시스템과 기록관리시스템, 온나라시스템 등 정보보호의 대상이 되는 정보시스템을 이용한다. 이용자중심의 기록관리 환경에서 물리적 환경과 전자시스템을 통한 기록정보의 접근통제는 기록정보의 보호를 위한 필수적인 요소라고 할 수 있다. 이에 본 연구는 공공기관 기록물관리 전문요원들의 기록정보의 안전한 보호와 접근통제에 대한 인식을 조사하여 개선해야 할 과제를 도출하고, 이를 개선하기 위한 논의와 제안점을 제시하였다. 먼저, 우리나라 정보보호 체계에 대한 법·제도 현황을 살펴보고, 접근통제에 대한 규정을 분석하여 기록관리 법·제도 및 접근통제 현황과 비교함으로써 시사점을 도출한다. 다음으로 질적연구 방법을 활용하여 정부산하 공공기관에서 근무하고 있는 전문요원들을 대상으로 심층인터뷰를 진행하였고, 그 결과를 분석하였다. 본 연구는 기록정보의 안전한 보호와 접근통제를 위하여 기록관리 영역의 체계 개편 등을 제안하여 정부산하 공공기관 기록관리의 개선과 전문요원들이 실질적인 권한과 통제권을 가지기 위한 제안을 통하여 기록관리 내실화를 꾀하였다는데 의의가 있다.