• 전자공학회논문지A
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• 제32A권9호
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• pp.114-120
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• 1995

It is important to test the various kinds of interconnect faults between chips on a card/module. When boundary scan design techniques are adopted, the chip to chip interconnection test generation and application of test patterns is greatly simplified. Various test generation algorithms have been developed for interconnect faults. A new interconnect test generation algorithm is introduced. It reduces the number of test patterns by half over present techniques. It also guarantees the complete diagnosis of mutiple interconnect faults.

• 한국멀티미디어학회논문지
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• 제9권6호
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• pp.742-749
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• 2006

In the network-based game where it uses the Internet infrastructure, the implementation is possible with the various methods. Such Applications are developed in the multi-tired architecture. There are many cases for the server to be separated from the hardware or the software. In this case, a lot of applications make the distributed process possible and are made as the multi-tiered architecture to develop the reusability of the existing software module. Especially, it is mostly general to separate for the case of a database server to a new tier. One of the important points of multi-tiered server side applications is security and because of this, it is difficult to share the related data about the design skill. Using design patterns, it gives help in reusing the existing written-code for the design of the game that needs a lot of money and time. Design Patterns are related to the software reuse. For the development of more efficient games, if well-defined design patterns are provided to the developers, then it would make more easy advanced game API and make possible the framework for the game development based on the API Through the analysis of the general network-based game currently servicing in the Internet, in this paper, we discuss how to implement a business logic tier using database system among the server side architectures. The main objective of this article is to show an efficient APIs(Application Programming Interfaces) design method which can be used to manage the data that must be saved to the database system among the packets that client/server have to be exchange.

• 한국정밀공학회지
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• 제29권1호
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• pp.41-47
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• 2012

The LDS(Laser Direct Structuring) is one of the new direct writing methods to fabricate conductive patterns by energy beam. It uses thermoplastic polymers with an additive compound that serves as plating seed after the activation by laser. The advantages of LDS include the miniaturization of electrical components, design flexibility, and a reduced number of production steps. The purpose of this study is to investigate the fundamental mechanism for LDS and the characteristics of conductive patterns by laser parameters. These results were studied by SEM, EDX, and XPS analysis. We have used a 20W pulse-modulated fiber laser and copper electroless plating to fabricate conductive patterns on polymer. The result showed that electroless copper plating seed caused the laser cracking of additive compound. In particular, the additive compound contained in copper metal oxides atoms will be changed to copper metal elements. Also, the characteristics of conductive patterns were dependent on laser parameter, especially laser fluence.

• 한국멀티미디어학회논문지
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• 제19권8호
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• pp.1544-1552
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• 2016

If the undo/redo function is not reflected in the initial design of an application, it makes it difficult to implement the undo/redo function additionally, in this paper, we examined some examples to design the sodoku game and analyzed problems of the design to implement the undo/redo functions. For an efficient design of the undo/redo functions without using swing.undo package, we propose a class design using the Command, Memento, and Observer pattern these are used as organic. The proposed method is more efficient for distributed work than other method. We implemented a sudoku game using proposed design. In the undo/redo function testing, we could see that it works well.

• Journal of Biosystems Engineering
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• 제20권3호
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• pp.217-225
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• 1995

This study was conducted to find design factors of spraying device of the boom sprayer for low volume application. Four types of nozzles(standard flat nozzle, drift guard nozzle, even flat nozzle, and hollow cone nozzle) were used for the spray characteristic experiment. Spray patterns of the nozzles were distinguished by the nozzle type, spray distance, and spray direction. The flow rate was proportional to the square root of spray pressure in all nozzles. Increased nozzle height improved spray distribution at reduced pressures and/or increased spacing. Distribution tended to improve as pressure increased within the range of pressures used for fan nozzles.

• 정보처리학회논문지D
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• 제10D권5호
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• pp.763-772
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• 2003

디자인 패턴은 소프트웨어 생산성 향상을 위해 사용되는 효율적인 기술로써 인식되고 있다. 이러한 디자인 패턴은 소프트웨어 설계시 자주 발생되는 특정 상황에 대한 문제를 효과적으로 해결할 수 있는 방법을 제공한다. 현재까지 다양한 분야에 필요한 디자인 패턴들이 발견되고 이들의 활용성을 증명하는 연구가 진행되고 있다. 그러나 소프트웨어 개발에 이들 디자인 패턴을 효과적으로 적용시키기 위한 체계적인 접근방법에 대한 연구가 부족하다. 본 논문에서는 점진적 디자인 패턴 통합을 통한 패턴지향 소프트웨어 개발 방법을 제시한다. 이를 위해 먼저 디자인 패턴을 활용하는 개발 프로세스를 정의하고 이 프로세스에서 요구되는 점진적 디자인 패턴 통합기법 및 디자인 패턴 기반의 소프트웨어 설계관점을 보인다. 또한 소프트웨어 시스템에 존재하는 디자인 패턴의 효율적인 추적 및 관리방법을 제시한다. 이러한 과정은 피드백 프레임워크 시스템 설계를 통해 구체화된다. 소프트웨어 개발시 디자인 패턴을 이용한 체계적인 접근과 활용은 초기 개발 단계부터 디자인 경험과 기법들을 효과적으로 활용할 수 있게 함으로써 시스템 개발에 효율성을 증대시킨다. 그 결과보다 안정되고 재사용 가능한 시스템을 이끌어내고 개발 시간과 비용을 단축하는 효과를 제공할 것이다.

• 대한인간공학회지
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• 제34권5호
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• pp.411-426
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• 2015

Objective: The goal of this thesis is to design the interaction structure and framework of system to recognize sign language. Background: The sign language of meaningful individual gestures is combined to construct a sentence, so it is difficult to interpret and recognize the meaning of hand gesture for system, because of the sequence of continuous gestures. This being so, in order to interpret the meaning of individual gesture correctly, the interaction structure and framework are needed so that they can segment the indication of individual gesture. Method: We analyze 700 sign language words to structuralize the sign language gesture interaction. First of all, we analyze the transformational patterns of the hand gesture. Second, we analyze the movement of the transformational patterns of the hand gesture. Third, we analyze the type of other gestures except hands. Based on this, we design a framework for sign language interaction. Results: We elicited 8 patterns of hand gesture on the basis of the fact on whether the gesture has a change from starting point to ending point. And then, we analyzed the hand movement based on 3 elements: patterns of movement, direction, and whether hand movement is repeating or not. Moreover, we defined 11 movements of other gestures except hands and classified 8 types of interaction. The framework for sign language interaction, which was designed based on this mentioned above, applies to more than 700 individual gestures of the sign language, and can be classified as an individual gesture in spite of situation which has continuous gestures. Conclusion: This study has structuralized in 3 aspects defined to analyze the transformational patterns of the starting point and the ending point of hand shape, hand movement, and other gestures except hands for sign language interaction. Based on this, we designed the framework that can recognize the individual gestures and interpret the meaning more accurately, when meaningful individual gesture is input sequence of continuous gestures. Application: When we develop the system of sign language recognition, we can apply interaction framework to it. Structuralized gesture can be used for using database of sign language, inventing an automatic recognition system, and studying on the action gestures in other areas.

• 한국멀티미디어학회논문지
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• 제9권1호
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• pp.101-108
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• 2006

현재 인터넷에서 서비스되고 있는 네트워크 게임을 개발하는 경우, 개발 인원과 시간이 많이 투입되는 프로젝트이기 때문에, 게임 제작 시 기존에 작성되어 있는 코드를 재사용이 가능하도록 설계하는 것은 중요한 일이다. 게임에 사용되는 데이터베이스는 많은 클라이언트들이 접근하는데, 자원의 효율적인 관리를 위해서, 데이터베이스의 접근횟수를 최소화하고 데이터를 효율적으로 처리할 수 있는 API(application program interface) 설계가 필수적이다. 이러한 문제를 해결하기 위해 관련 소프트웨어 모듈의 객체지향적인 설계가 필요하다. 본 논문에서는 데이터베이스 자원을 다루는데 필요한 효율적인 API 구현을 위해 GoF(gang of four)의 디자인 패턴을 제안한다. 몇 개의 게임 GUI(graphical user interface) 분석을 통해 설계된 데이터베이스는 일반적인 데이터베이스 설계 단계에서 설계의 검토 및 수정을 최소화하여 최적화된 스키마 집합을 빠른 시간에 생성할 수 있다는 장점이 있고, 이것을 기초로 데이터베이스 서버 측 API 설계에 GoF의 디자인 패턴을 적용함으로써 게임 서버와 데이터베이스의 호출 횟수가 실질적으로 감소하고, 개발된 API를 손쉽게 유지보수 할 수 있으며, 새로운 API의 추가가 쉽다는 장점이 있었다.

• 한국의상디자인학회지
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• 제25권2호
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• pp.135-150
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• 2023

The purpose of this study is to understand the formative characteristics of futuristic virtual fashion revealed in virtual fashion platforms targeting the human body. First, the current status of fashion in the metaverse and futurist fashion were reviewed and summarized by referring to prior research. Next, among the items posted on DRESSX, "futurism" was searched and those resturning a positive result were collected as research subjects. The characteristics were organized into design elements: colors, shapes, materials, and patterns. Futuristic aesthetic characteristics were derived from the characteristics of each design element. As a result, color showed the characteristics of achromatic, vivid and neon colors, multi-color and gradation, multi-color due to reflected light, and color conversion. As for the form, a body-concious look or exaggerated silhouettes, spatial expressions in geometric structures, forms imitating living things, and fluid silhouettes using clouds were prominent. Materials showed the digitization of universal clothing materials, application of industrial materials, use of metal materials, and unrealistic materials. In the patterns, geometric abstract patterns, patterns that reveal the digital world view, and moving fluid patterns appeared. The aesthetic characteristics of futurism in virtual fashion were revealed in four categories: visual dynamics, high-tech sensibility, variability, kineticisim. Visual dynamics were revealed in geometric forms, and intense neon colors. High-tech sensibility was prominent in the use of metal and industrial materials, light emission, and patterns of the digital world view. The expression of multiple colors by reflected light and the change showed the variability of futurism. The use of unrealistic materials, such as clouds and fire and fluid silhouettes expressed kineticisim. The infinite expressiveness of virtual fashion made it possible to actively express the aesthetic characteristics of futurism.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제12권7호
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• pp.285-294
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• 2023

다양한 산업에 영향을 미치고 있는 소프트웨어의 규모와 복잡도가 높아지면서 소프트웨어 아키텍처의 역할이 매우 중요해지고 있다. 소프트웨어 아키텍트는 이러한 아키텍처를 설계할 때 종종 경험적 직관에 의존한다. 그럼에도 아키텍처 설계에 관한 방법론이 다양하게 연구되고 있으나, 시스템에 여러 아키텍처 패턴(architectural pattern)을 적용하는 구체적인 방법이나 적용 순서에 따른 효과에 관해서는 다루고 있지 않다. 본 연구에서는 먼저, 같은 아키텍처 패턴 세트(set)를 동일 시스템에 적용할 때, 적용 순서에 따른 아키텍처 설계 결과의 상이성에 관해 설명한다. 이러한 현상적 논리를 바탕으로 아키텍처 패턴 적용이 필요한 요구사항들을 사전에 식별하고, 적용할 패턴을 분류하는 방안을 제시한다. 또한 분류한 패턴들을 효율적으로 적용하기 위해 적용 순서를 정할 수 있도록 요구사항의 우선순위를 정하는 절차를 제안하며 사례연구를 통해 아키텍처 패턴 유형을 기반으로 요구사항을 우선순위화하는 것이 품질 속성 측면에서 효율적인 소프트웨어 아키텍처 설계에 도움이 됨을 보인다.