• 한국실내디자인학회논문집
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• 제6호
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• pp.28-37
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• 1995

As we approach the end of the twentieth century, it seems we need a new way to express the thoughts, needs, and values that are undergoing a drastic change and a new strategy to create diverse cultural forms that would reflect and incorporate such changes. In this study, I am introducing the chaos theory as a new way of thinking that would help counterbalancing the deter-ministic world-view and forging a harmonious unity of man and his environment. As a creative principle, the theory seems to offer an unlimited number of structural possibilities for art and design. In fine, this study discuss-es the reductive nature of modernist approach and offer instead the chaos theory that is more probabilistic and capable of greater diversity.

• ETRI Journal
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• 제34권2호
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• pp.288-291
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• 2012

In this letter, a new online anomaly detection approach for software systems is proposed. The novelty of the proposed approach is to apply a new semantic kernel function for a support vector machine (SVM) classifier to detect fault-suspicious execution paths at runtime in a reasonable amount of time. The kernel uses a new sequence matching algorithm to measure similarities among program execution paths in a customized feature space whose dimensions represent the largest common subpaths among the execution paths. To increase the precision of the SVM classifier, each common subpath is given weights according to its ability to discern executions as correct or anomalous. Experiment results show that compared with the known kernels, the proposed SVM kernel will improve the time overhead of online anomaly detection by up to 170%, while improving the precision of anomaly alerts by up to 140%.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.1065-1068
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• 2009

The current study introduces a new color space applicable to next-generation media such as UHDTV and 3D-TV systems that are in the middle of development. Display referred approach was taken into account rather than scene referred approach for deriving a new RGB-primary set forming the new color space. The reproducible color range generated by the newly suggested RGB-primary set encompasses almost entire real-world surface colors with a very good efficiency.

• 한국IT서비스학회지
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• 제1권1호
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• pp.45-55
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• 2002

This paper suggests a new approach to IT project management based on a regular project meeting results to consider the recent project environment. The greater part of recent IT projects are related to e-business transformation. Transforming to e-business is a new problem very different from those they have been worked, in several point of views. Under e-business era, therefore any IT project is being implemented in more complex, dynamic and uncertain environment than traditional. That is, project leaders must consider more factors to control projects including resources, quality, risks, and technologies, and human resources. The project organizations and software corporations thus need to develop and establish new concepts or methodologies to manage e-business projects. In this point of view, an entropy model in this study is introduced for estimating and managing the uncertainty in project control using multi-attributes of project meeting. This paper proposes a new frame work based on entropy model using project meeting results to consider eIT project environment with a small pilot study.

• Journal of Digestive Cancer Research
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• 제3권2호
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• pp.61-69
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• 2015

About 80% of all pancreatic cancer patients suffer from a wasting syndrome defined as the cancer cachexia characterized by abnormally low weight, weakness, and loss of skeletal muscle mass, which directly impacts physical activity, quality of life and overall survival. Over the past decades, we have gained new insights into the underlying mechanism of cachexia associated with pancreatic cancer. The aim of this review was to explore recent findings about cancer cachexia pathophysiology and describe the current pharmacologic approach. Pancreatic cancer cachexia is a multifactorial syndrome mediated by mechanical factors, inflammatory cytokines, neuropeptides, hormones and tumor-derived factors. The treatment of cancer cachexia remains controversial but is currently an active area of research. Several new targeted drugs are under investigation, and we hope to open a new prospect in the management of cancer cachexia in the future.

• 전기저널
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• 10호통권82호
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• pp.5-9
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• 1983

• 대한기계학회논문집A
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• 제30권8호
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• pp.889-896
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• 2006

The concept of reliability has been applied to the topology optimization based on a reliability index approach or a performance measure approach. Since these approaches, called double-loop single vector approach, require the nested optimization problem to obtain the most probable point in the probabilistic design domain, the time for the entire process makes the practical use infeasible. In this work, new reliability-based topology optimization method is proposed by utilizing single-loop single-vector approach, which approximates searching the most probable point analytically, to reduce the time cost. The results of design examples show that the proposed method provides efficiency curtailing the time for the optimization process and accuracy satisfying the specified reliability.

• Steel and Composite Structures
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• 제17권5호
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• pp.721-734
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• 2014

In the current study, we consider a new class of analytical periodic solution for free nonlinear vibration of mechanical systems. Hamiltonian approach is applied to analyze nonlinear problems which occur in dynamics. The proposed method doesn't have the limitations of the classical methods and leads us to a high accurate solution by only one iteration. Two well known examples are studied to show the convenience and effectiveness of this approach. Runge-Kutta's algorithm is also applied and the results of it are compared with the Hamiltonian approach. High accuracy of the proposed approach reveals that the Hamiltonian approach can be very useful for other nonlinear practical problems in engineering.

• 한국환경복원기술학회지
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• 제11권2호
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• pp.19-27
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• 2008

Ecosystem fragmentation by human intervention breaks down the biosphere habitat. Wildlife corridors connect biosphere habitats to maintain ecosystem continuity and provide animals with connecting routes. In Korea, there are 17 existing wildlife corridors on highways (as of December, 2006. Korea Freeway Corporation). There are 24 highway routes, 2,923km of highway(as of December, 2004. Korea Freeway Corporation). However, wildlife corridors are not enough and roadkill increases every year, so we need to construct additional wildlife corridors on highways. This study proposes a new approach to the location of wildlife corridors on highways, using a comprehensive analysis method for main location elements, and applies it to a study area. First, it examines traditional approaches to location of wildlife corridors through literature review and field study to analyze the present conditions of existing wildlife corridors. Then, it developes a comprehensive analysis method for the location of wildlife corridors. (1) Field investigation : investigate planting, water bodies and so on. (2) Roadkill analysis : roadkill counts, locations, time, and so on. (3) Monitoring : animal traces were surveyed and sensor cameras were installed to determine target species. (4) Simulation for animal movement : most probable wildlife dispersal was simulated by a computer software. (5) A new comprehensive approach overlays all analysis on a map and determines the location of proposed new wildlife corridors. In conclusion, it proposes an over-bridge type wildlife corridor in Dalnaenae Hill (413-414km from Busan) and an underpass type near the entrance to Gwanhyun temple way (415-416km from Busan). This new approach based on roadkill data, computer simulation of wildlife dispersal, monitoring of animals, and site analysis, may contribute to better location of wildlife corridors on highways.

• 한국항공우주학회지
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• 제34권5호
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• pp.12-18
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• 2006

고속 항공기의 천음속 버펫 발단을 예측할 수 있는 새로운 정상 접근 방법을 개발하였다. 본 논문에서는 버펫 발단까지 정상 유동장으로 가정하였다. 본 연구는 다양한 정적 공력 변수들의 급격한 변화 분석을 포함하고 있다. 이러한 급격한 변화는 천음속 버펫의 발단을 지시한다. 본 연구에서 고려된 다양한 공력 변수 가운데 압력 중심점 변화가 가장 명확한 천음속 충격파 버펫 발단 지시자임을 보여준다. 이러한 새로운 정상 접근 방법은 박리기포를 수반하는 익형이나 큰 후퇴각과 작은 종횡비를 갖는 날개의 천음속 버펫 발단 예측에 적용할 수 있다. 버펫 시험결과와 비교하여 좋은 일치를 얻었다. 새로운 정적 접근 방법 결과를 기초로, 압력 중심점 변화 곡선의 급격한 기울기 변화는 항공기 전 기체 형상에 대한 정상 시험 방법 버펫 발단 지시자로 새롭게 제시할 수 있다.