• 한국실내디자인학회논문집
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• 제18호
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• pp.110-116
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• 1999

인류의 역사가 시작된 이후, 인간의 창조는 자연의 모방이라는 큰 울타리 안에서 이루어져 왔다. 신의 작품이 위대한 자연이라면, 인간의 작품은 극히 단순한 그것의 모방에 불과한 것인데, 인간은 인간의 제한된 두뇌 활동으로 이해하기가 불가능한 복잡한 자연을 인식하기 위하여 단순화(simplification)라는 방법을 사용하여 왔다. 이 과정에서 기하학(geometry)은 극도로 발전하게 되며, 인간의 자연 인식을 위한 보편적인 수단으로 자리잡게 된다. 중요한 사실은 기하학이 수단으로서 뿐만 아니라 인간에 의한 창조의 목표로서 위치하게 되었다는 사실이다. 즉 기하학은 자연의 모방이전에 이미 인간의 상상력을 지배해왔고, 그것은 가장 보편적인 창조원리가 되어왔다는 점이다. 그러나 최근의 과학과 기술의 발전, 특히 컴퓨터 기술의 발전으로 그 복잡한 자연은 단순화의 과정을 거치지 않은 복잡한(complex) 상태로 인간에게 이해되어지기 시작했다. 그중 하나가 19세기에 시작된 복잡성(chaos)이론인데 실내공간의 디자인에 있어서도 이러한 자연의 복잡성(complexity)이 새로운 창조 원리로서 자리잡게 되었다. 대표적인 실내 공간 다지이너로서 Nigel Coats를 꼽을 수 가 있는데 그의 무정부적인 (anarchism) 디자인 성향은 자연에서 발견될 수 있는 특징중의 하나라고 할 수 있다. 그가 추구한 복잡성(complexity)은 일본의 동경과 같은 고 밀도(high density)의 적극적 소비 도시(active consuming city)에서 발견되는 지극히 인간적인 도시생활을 만들기 위한 software의 제작이며, 이는 자연이라는 신의 창조물에 근접한 모방이 된다. 본 연구는 Nigel Coats의 작품에서 발견될 수 있는 이러한 무정부주의적 성향이 어떻게 자연의 본질적인 복잡한 (complex) 모습과 관련이 되는가를 통하여 현대 실내디자인의 새로운 방향이 이 시대의 과학적 발견에 따른 복잡성(complexity)과 유관함을 보여준다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제28권10호
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• pp.720-731
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• 2001

구조적 개발 방법론에 적용하도록 만들어진 복잡도 척도들을 클래스의 상속성, 다형성, 메시지 전달 그리고 캡슐화와 같은 객체지향의 개념에 직접적으로 적용할 수 없다. 또한 기존의 객체지향 소프트웨어에 대한 척도의 연구는 프로그램의 복잡도나, 설계 단계의 척도가 대부분이었다. 실제로 분석단계 클래스의 복잡도를 낮춤으로서 시스템의 개발 노력이나 비용 및 유지보수 단계에서의 노력이 크게 줄어들게 되므로, 분석 클래스에 대한 복잡도를 측량하기 위한 척도가 필요하다. 본 논문에서는 객체지향 개발방법론인 RUP(Rational Unified Process)의 분석 단계에서 추출되는 분석 클래스에 대해서 복잡도를 측정할 수 있는 새로운 척도를 제안한다. 협력 복잡도CC(Collaboration Complexity)는 가능한 협력의 최대 수로서 클래스가 잠재적으로 얼마나 복잡할 수 있는지를 측정하기 위한 척도이며, 각 협력자들의 인터페이스를 이해하는 것과 관련된 총체적 어려움을 측정하는 인터페이스 복잡도 IC(Interface Complexity)를 정의하였다. 제안된 척도는 Weyuker의 9가지 공리적 성질에 대하여 이론적인 검증을 하였으며, 텍스트 마이닝 기법을 사용하여 사용자의 질문에 자동으로 응답하는 시스템의 분석 클래스에 대하여 제안된 척도를 적용하여 복잡도를 측정하였다. 제안된 CC와 IC의 값과 Chidamber와 Kemerer가 제안된 CBO와 WMC의 값을 비교해 본 결과, 제안된 복잡도 척도의 계산결과 값이 큰 클래스의 경우에는 설계 이후 단계에서도 역시 복잡도가 커지게 되는 것을 알 수 있었다. 이로써 소프트웨어개발 주기의 초기에 클래스에 대한 복잡도를 평가해 보고, 나머지 단계에 필요한 시간과 노력을 예측함으로써 보다 비용-효과적인 객체지향 소프트웨어를 개발할 수 있는 가능성이 높아질 것으로 기대된다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 추계학술대회
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• pp.1310-1315
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• 2003

In many practical engineering design problems, there are some design and manufacturing considerations that are difficult or infeasible to express in terms of an objective function or a constraint. In this situation, a set of optimal candidate designs having different topological complexities, not just a single optimal design, is preferred. To generate systematically such design candidates, we propose a hierarchical multiscale design resolution control scheme. In order to adjust its topological complexity by choosing a different starting resolution level in the hierarchical design space, we propose to employ a general M-band wavelet transform in transforming the original design space into the multiscale design space.

• 한국주거학회논문집
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• 제14권1호
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• pp.87-94
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• 2003

As important elements consisting of city streetscape, facade design on building is generally very significant. But without active acceptance and understanding of the concept that the building has a private objective as personal property, it is not easy to take an involvement into design as well as to establish reasonable and scientific standards of harmony. Therefore, for desirable streetscape planning, it is indispensable to know how to closely examine the visual harmony of already established buildings in each street and how to get the solutions for its realization. In this respect, this study is to try to examine and verify the feasibility of our present streetscape situation by experimental application of acceptable Y. Elesheshtawy's model(1997), an interpretation of quantitative index of street buildings by Gestalt theory, for the preparation of the foundation of institute and standards of building design which has social value in contributing to visual and spacious harmony in our street space without giving any damage to private property. From the result, I can assure the validity that the physical complexity, whose schema is socially and culturally different from our reality, is applicable to our actual streetscape in some extent.

• 한국CDE학회논문집
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• 제14권3호
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• pp.207-216
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• 2009

Modern engineering design problems involve complexity of disciplinary coupling and difficulty of problem formulation. Multidisciplinary design optimization can overcome the complexity and design optimization software or frameworks can lessen the difficulty. Recently, a growing number of new multidisciplinary design optimization techniques have been proposed. However, each technique has its own pros and cons and it is hard to predict a priori which technique is more efficient than others for a specific problem. In this study, a software system has been developed to directly solve MDO problems with minimal input required. Since the system is based on MATLAB, it can exploit the optimization toolbox which is already developed and proven to be effective and robust. The framework is devised to change an MDO technique to another as the optimization goes on and it is called a reconfigurable MDO framework. Several numerical examples are shown to prove the validity of the reconfiguration idea and its effectiveness.

• 산업공학
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• 제8권1호
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• pp.61-78
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• 1995

Warehouse planning or design is not a static, one-time activity. To survive in the constantly changing market warehouse design should be a continuous process in which the anticipated requirment are reflected on the current warehouse status. Thus, the goal of warehouse management is to effectively utilize the various warehouse resources to meet the varying customer requirment. This paper presents an engineering framework for warehousing system analysis and design from the perspective of a total system approach. The complexity pertinent to warehousing system analysis and design is first discussed, which mainly come from the interplay among product data, order data, equipment types, operating strategies, and functional specification of the overall system. The understanding of the complexity leads to a general structure and a conceptual design procedure for a warehousing system. The general structure is comprehensive enough to represent most warehousing and flexible enough to accommodate the more sophisticated ones. The conceptual design procedure portrays the high-level interelationships the design issues.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.1205-1211
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• 2003

Having information is most important at the present age. Internet is main source of obtaining information and mobile telecommunication let people communicate each other without any time and space limitation. Recently, advanced technology in telecommunication makes two-way service possible. So, the mobile internet service combined internet with mobile telecommunication is widely and rapidly promoted. Therefore user can transmit and receive a lot of information without time and space restriction using various application technologies. This paper deals with machinery that makes human do office work conveniently in vehicle using mobile internet service. Namely, it tries to design mobile internet machinery combining of wireless payment, GPS module, mobile internet, and mobile office etc. And that can transmit and receive e-mail or documents etc. This machinery has various objects, and design process has complexity. To reduce trial error and processing complexity, Axiomatic Design Method is used to design the machinery.

• 복식
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• 제56권9호
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• pp.1-13
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• 2006

The purpose of this study is to apply a concept of open structure to clothing design and to verify the characteristics found in the various types of clothing which has open structure. The literatures from various academic fields including philosophy, literature, social science, architecture, and fine arts are investigated to define the concept of openness and to analyze it from the perspectives both of the visual and of the moaning of openness. This paper is to identify the types and the characteristics of clothing by future intention, complexity, discontinuity of open structure. By closely examining fashion design after 1980s found in fashion collection publications and designer's websites, the results of this study are as follows: first, the concept of openness can be classified into two different levels, that is, visual and meaning, secondly, in clothing the concept of open structure is applied to the meaning side by future intention, by complexity and by discontinuity. Open structure through future Intention has new content and interpretation and must have the possibility of intelligence awakening, future guidance and basic contents. Open structure through complexity has secondary function exists concurrent with the shape key example is the smart clothes with the digital functions. It has functions of amusement, supplement and protective, and is future clothes which satisfies with health, welfare, desire of beauty. Open structure with discontinuity is clothes with dramatic changes in system, structures and states. Structure can be changed by silhouette, detail, or fabric, material, or dramatic and practical function as tools in terms of productions and environment. This study can help to formulate and to integrate the concept of open structure in clothing with various phases and enhance the value of clothes by showing an application of the concept of openness to the clothing in meaning level.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2633-2636
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• 2003

This study focuses on the new hardware design of fast and low-complexity multiplier over GF(2$\^$m/). The proposed multiplier based on the irreducible all one polynomial (AOP) of degree m, to reduced the system's complexity. It composed of Cyclic Shift, Partial Product, and Modular Summation Blocks. Also it consists of (m＋1)$^2$2-input AND gates and m(m＋1) 2-input XOR gates. Out architecture is very regular, modular and therefore, well-suited for VLSI implementation.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.447-448
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• 2008

This paper presents a low-complexity design and implementation results of a multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) symbol detector for high speed wireless LAN (WLAN) systems. The proposed spatial division multiplexing (SDM) symbol detector is designed by HDL and synthesized to gate-level circuits using 0.18um CMOS library. The total gate count for the symbol detector is 238K.