• Child Health Nursing Research
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• 제12권2호
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• pp.244-252
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• 2006

Purpose: This study was conducted to find out the relationship among resilience, coping mechanism, social support and family strengths and to explore the predictors for school adolescents' resilience. Method: The subjects of this study were 296 high school adolescents residing in two urban area in Korea. The subjects completed self-report questionnaires measuring Resilience(Jew, et al., 1997), Coping Mechanism(Carver, et al., 1989), Social Support(Lee, 1997) and Family Strengths(Olson 1982). Results: Socio-demographic characteristics of school adolescents influencing resilience, coping mechanism, social support and family strengths were revealed. The results showed that resilience, problem-focused coping, social support and family strengths were correlated positively and self-esteem support, problem-focused coping, sibling's and mother's help, and instrumental support were the predictors of resilience of school adolescents. Conclusion: We found out the specific attributes of individual, social and family factors which predict resilience for school adolescents. These results may suggest further studies to investigate the relationship between stress and resilience, find out other predictors of resilience for Korean school adolescents, examine whether protective factors for adolescents' problem behaviors influence similarly on resilience.

• 터널과지하공간
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• 제14권1호
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• pp.26-34
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• 2004

국내의 경우 UAM에 관한 체계적인 연구가 부족하여 역학적 보강 메커니즘에 관한 이론정립이 되어 있지 않음은 물론 설계변수에 따른 보강효과에 관한 정성적, 정량적인 관계정립이 아직 부족한 관계로 대부분의 경우 공학적 근거보다는 외국자료나 현장 지질조건에 따른 경험적 방법에 의존한 시공이 이루어지고 있다. 이러한 실정을 감안할 때 합리적이고 이론적 인 설계 및 해석기법의 도입이 요구되어지고 있다. 따라서, 본 연구에서는 유한요소법을 이용하여 UAM의 보강 메커니즘에 관여할 것으로 판단되는 지반물성, 상부지반의 두께, 삽입강관의 사이즈, 강관의 중첩길이, 강지보의 적용 유$.$무에 대하여 굴착 진행에 따른 강관의 거동 분석을 통해 UAM의 보강 메커니즘을 알아보기 위한 해석을 수행하였다. 본 연구를 통해 강관이 삽입된 지반의 하부를 굴착하면서 강관에 발생하는 부재력을 분석함으로써 UAM적용 시 강관의 보강 메커니즘을 확인하였다.

• 한국지능시스템학회논문지
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• 제12권4호
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• pp.347-352
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• 2002

본 연구에서는 동적인 전자상거래 협상을 지원하기 위한 퍼지 AHP 기반의 협상지원 메커니즘 (Fuzzy AHP-based Negotiation support: FAHP-NEGO)을 제안한다. 협상은 단독으로 의사결정을 할 수 없는 둘 이상의 구성원간에 합의점을 도출하는 과정을 의미한다. 따라서, 여기에는 구성원 사이의 합의점을 도출하는 것이 매우 중요하다. 본 연구에서는, 이를 지원하기 위한 전자상거래 협상지원 메커니즘의 이론적인 배경으로서, 퍼지멤버십 함수와 AHP 기법을 사용하였다. 본 연구에서 제안한 협상지원 메커니즘은 정성적인 변수와 정량적인 변수를 모두 포함하고 있으며, 다중 협상과정을 통하여 전자상거래 협상을 지원한다. 건강보조식품 구매과정에 전사상거래 협상지원 메커니즘을 적용한 결과, 본 연구에서 제안한 전자상거래 협상지원 메커니즘이 정성적인 변수와 정량적인 변수를 반영한 전자상거래 협상을 지원할 수 있음을 보여주었다 본 연구의 후반부에는 향후 연구과제로서 전자상거래 협상지원 모형과 시스템 구축에 대해서 언급하였다.

• The Journal of Korean Physical Therapy
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• 제5권1호
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• pp.89-94
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• 1993

Liking is a common activity in many of occupations and daily living, Lifting has been studied for many years. In this article, based on the existing literatures on lifting, mechanism of back support and proper posture during lifting are described. These mechanisms include the intra-abdominal pressure mechanism, the thoracolumbar fascia mechanism, and posterior ligamentous system. Proper posture for lifting are in the squat style, the lumbar spine is aligned in its normal lordosis and the pelvis is aligned in an anterior tilt. Keep the load close to the body and avoid twist white lifting.

• Asia pacific journal of information systems
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• 제17권1호
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• pp.59-76
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• 2007

Information and Communication Technologies (ICT) changed our everyday business drastically. Business routines have been transformed to online activities. New theories and models were developed for the brand new online environment. For online negotiations, however, the research on new mechanisms is not enough, especially for bilateral distributive negotiations. A reserve price reporting mechanism (RPR) together with its extended version (ERPR) is proposed in this paper. The key improvement of reserve price reporting mechanisms is to let the negotiators report their reserve price to a third-party system before they actually start the negotiation. A prototype of this RPR system is developed and a lab experiment is conducted to test the performance of the two mechanisms compared with traditional direct bargaining (TDB) mechanism. The results of the experiment support that the reserve price report mechanisms proposed are more efficient than the traditional one in several dimensions including social welfare.

• 한국통신학회논문지
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• 제33권5B호
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• pp.356-363
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• 2008

1983년 미국에서 보편적서비스 지원을 위한 기금제도(USF: Universal Service Fund)가 도입된 이래 각국 정부는 저렴한 요금으로 모든 국민들이 기본적인 통신서비스를 제공받을 수 있도록 보편적서비스 지원제도를 운영하고 있다. 국내에서도 2000년 이래 보편적서비스 지원제도가 도입되었고, 최근에 제도개선논의가 활발히 전개되고 있다. 본고에서는 주요국의 보편적서비스 손실금 지원제도를 비교분석하고 국내 제도 개선시 시사점을 찾아보고자 한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권10호
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• pp.3333-3354
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• 2022

The 5G Core Network (5GC) is an essential part of the mobile communication network, but its security protection strategy based on the boundary construction is difficult to ensure the security inside the network. For example, the Network Function (NF) mutual authentication mechanism that relies on the transport layer security mechanism and OAuth2.0's Client Credentials cannot identify the hijacked NF. To address this problem, this paper proposes a trust model for 5GC based on NF interaction behavior to identify malicious NFs and improve the inherent security of 5GC. First, based on the interaction behavior and context awareness of NF, the trust between NFs is quantified through the frequency ratio of interaction behavior and the success rate of interaction behavior. Second, introduce trust transmit to make NF comprehensively refer to the trust evaluation results of other NFs. Last, classify the possible malicious behavior of NF and define the corresponding punishment mechanism. The experimental results show that the trust value of NFs converges to stable values, and the proposed trust model can effectively evaluate the trustworthiness of NFs and quickly and accurately identify different types of malicious NFs.

• Geomechanics and Engineering
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• 제11권3호
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• pp.401-420
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• 2016

The stability of deep coal roadways with large sections and thick top coal is a typical challenge in many coal mines in China. The innovative Universal Discrete Element Code (UDEC) trigon block is adopted to create a numerical model based on a case study at the Dongtan coal mine in China to better understand the failure mechanism and stability control mechanism of this kind of roadway. The failure process of an unsupported roadway is simulated, and the results suggest that the deformation of the roof is more serious than that of the sides and floor, especially in the center of the roof. The radial stress that is released is more intense than the tangential stress, while a large zone of relaxation appears around the roadway. The failure process begins from partial failure at roadway corners, and then propagates deeper into the roof and sides, finally resulting in large deformation in the roadway. A combined support system is proposed to support roadways based on an analysis of the simulation results. The numerical simulation and field monitoring suggest that the availability of this support method is feasible both in theory and practice, which can provide helpful references for research on the failure mechanisms and scientific support designing of engineering in deep coal mines.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.960-964
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• 2004

During system resource improvement process that based on Object-Oriented technology could be affect to the continuous system performance if lack appropriate management and control objects mechanism. This paper proposes a methodology to support continuous system performance and its stability. The adoption is based on Java Container Framework and Collections Framework for object collection. Also includes Software Engineering, Object Migration and Multiple Class Loaders mechanism accommodate to construct Continuous Migration Container (CMC). CMC is a runtime environment provides interfaces for management and control to support upgrading object process. Upgrade object methodology of CMC can be divided into two phase are object equivalence checking and object migration process. Object equivalence checking include object behavior verification and functional conformance verification before object migration process. In addition, CMC use Multiple Class Loaders mechanism to support reload effected classes instead of state transfer in migration process while upgrading object. These operations are crucial for system stability and enhancement efficiency.

• 한국철도학회논문집
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• 제5권4호
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• pp.244-252
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• 2002

We must notice ground movement by excavation for reasonable tunnel designs. The convergence confinement method is an attempt to evaluate tunnel stability conditions by means of a mathematical model and a ground response curve. In this study, the convergence confinement method by numerical model was examined. This method don't need the basic assumptions for a mathematical model of circular tunnel shape, and hydrostatic in situ stress. Also modified ground response curve that is calculated after installing the support, is suggested, which informs us the ground movement mechanism. The ground response curve and the support reaction curve are mutually dependent. Especially the support reaction curve depends upon the ground response curve. The mechanism of tunnel must be analyzed by the interaction between support and ground. Consequently the stability of tunnel must be qualitatively investigated by a ground response curve and quantitatively adjudged by a numerical analysis for the reasonable design of tunnel.