• International Journal of Control, Automation, and Systems
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• 제1권3호
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• pp.339-350
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• 2003

In this paper, we propose a simultaneous multithreading (SMT) architecture that improves instruction throughput by exploiting instruction level parallelism (ILP) and thread level parallelism (TLP). The proposed architecture issues and completes instructions belonging to the same thread in exact program order. The issue and completion policy greatly reduces the design complexity and hardware cost of our architecture, compared with others that employ out-of-order issue and completion. On the other hand, when the instructions belong to different threads, the issue and completion orders for those instructions may not necessarily be identical to the fetch order. The processor issues instructions simultaneously from multiple threads to functional units by exploiting ILP and TLP, and by dynamic resource sharing. That parallel execution notably improves performance and resource utilization with minimal additional hardware cost over the conventional superscalar processors. This paper proposes an SMT architecture with grouping as well as one without grouping. Without grouping, all threads dynamically and flexibly share most resources. On the other hand, in the SMT architecture with grouping, in which resources and threads are divided into several groups for design simplification, resources are shared only among threads belonging to the same group as those resources. Simulation results show that our processors with four and eight threads improve performance by three or more times over the conventional superscalar processor with comparable execution resources and policies, and that reasonable grouping reduces the design complexity of SMT processors with little negative effect on performance.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2003년도 춘계공동학술대회
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• pp.529-536
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• 2003

The majority of previous studios on tolerance synthesis have viewed the issue as a design methodology to determine optimal component tolerances on behalf of a manufacturer. while meeting given assembly tolerance requirements Although a considerable amount of research has been done on this issue. a couple of important questions still remain unanswered First. how ran a design engineer quantitatively incorporate a customer's perception on a product quality into a tolerance synthesis scheme at the early design stage Second. how ran component tolerances and assembly tolerance be optimized in a simultaneous way? To answer these questions. this article presents the customer-driven concurrent tolerance synthesis which is facilitated by the notion of truncated distribution and the use of mathematical programming techniques. while adopting the major principles of Tagurhl philosophy. The work presented in the article is an effort to gain insight, which can be useful in practice when setting up guidelines for an overall tolerance synthesis.

• Nuclear Engineering and Technology
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• 제38권2호
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• pp.129-138
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• 2006

The Gas-cooled Fast Reactor (GFR) is one of the six reactor concepts selected within the framework of the Generation IV initiative and is the reference concept for the Commissariat $\grave{a}$ l'Energie Atomique $(CEA^1)$. Two reactor unit sizes have been considered: 600 MWth and 2400 MWth. As far as thermal-hydraulics is concerned, reactor decay heat removal (DHR) proves to be a major issue. The CEA has conducted exploratory design studies to address this issue and a reference solution for the 600MWth reactor has been recommended.

• 한국실내디자인학회논문집
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• 제18호
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• pp.23-30
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• 1999

Nowadays, large-scale office buildings have been multistoried, mechanized, and functioned with economic growth. These buildings have improved and developed technical and designated respects in varied society. Even though these buildings are in improved situation, working places which are one of the most important parts have not developed enough their functions and shapes. Working environments that were ignored have come a big issue to rise efficiency and productivity. Working functions and work's opinions did not examine and analyze because of careless cognition of working places. In these reason, workers are engaged in inconvenient surroundings that already set improper way or not to develope environments that obstructs productivity. Working places which were ignored in the past have come a big issue to rise productivity and efficiency. Now, the goal of this research is to reform working places more efficient and functional by examining by examining working environment and proper arrangements.

• 패션비즈니스
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• 제14권4호
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• pp.185-199
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• 2010

Global warming started as the scientific problem in 20th century is being highlighted as the environmental issue with the conclusion of convention on climate change. It has great influence in all aspects of nature, especially 'Eco-friendly design' that takes not only health life of present but also affluent life in the future into consideration became an inevitable trend in almost all industries including the apparel and distribution industry worldwide. Therefore, this study is an eco-friendly tendency in fashion that are hot issue in the world and focused on advertisement and collection since 2000. The aim of this is to classify eco-friendly fashion design study presented in contemporary fashion brand. In result, it was analyzed fourth tendencies as follows : eco-friendly tendency with organic material, upgradation of recycle fashion, green campaign and well-being LOHAS fashion. In this aspect, eco-friendly tendency that is expanded to overall society, culture and living shows in present.

• Industrial Engineering and Management Systems
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• 제15권4호
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• pp.289-289
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• 2016

• 건축사
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• 통권491호
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• pp.63-73
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• 2010

• 건축사
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• 통권500호
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• pp.90-109
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• 2010

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2007년도 춘계학술발표대회
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• pp.1535-1537
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• 2007

A design pattern is a general solution to a commonly occurring problem. Design patterns have proven highly effective in representing, transferring, and applying the design knowledge in many engineering disciplines. However, these patterns have not addressed sensor network specifically. With a growth of sensors and sensor networks, and considering their profound applicability, there is a crucial need to articulate ones experience of application development or deployment of sensor nodes in the form of design patterns to avoid the future mistakes. This paper discusses the same issue and show applicability of design patterns in sensor networks.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.95.2-95
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• 2001

Disturbance observer(DOB) based controller design is one of the most popular methods in the field of motion control. In this paper, a generalized disturbance compensation framework, called as robust internal-loop compensator(RIC) is introduced and an advanced design method of DOB is proposed based on the RIC. Mixed sensitivity optimization problem, which is the main issue of DOB design, is solved through the parameterization of DOB in the RIC framework. Different from conventional methods, Q-filter is separated in the mixed sensitivity optimization problem and the systematic design law for the DOB is proposed. This guarantees the robustness and optimality of the DOB and also enables the design for unstable plants.