• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.451-453
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• 2002

최근 들어, 3D 게임개발이 활발해지면서 게임 맵을 생성하기 위한 저작 시스템 또한 그 필요성을 더해 가게 되었다. 본 논문의 3D 게임 맵 저작 시스템은 맵을 구성하기 위해 자체적인 지형 생성 기능을 제공하며, 다양한 3D 객체 배치 기능, 스크립트 작성 및 시뮬레이션 기능을 제공한다. 특히, 대규모 실외용 지형을 생성하기에 적합하도록 특수화된 지형 구조를 가지고 있으며, 기존의 지형 CLOD 알고리즘을 개선하여 특수화된 지형의 렌더링 속도 문제를 해결하였다. 또한, 사용자가 손쉽게 게임 맵을 생성할 수 있도록 편리한 사용자 인터페이스를 지원한다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1999.11a
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• pp.107-112
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• 1999

증기터빈 및 발전기의 특성을 그대로 모사 하는 PC 기반의 시뮬레이터를 개발하였으며, 사용자가 개발된 시뮬레이터의 기능들을 적절하고 편리하게 사용할 수 있도록 인간공학의 원칙을 고려하여 설계하였다. 이를 위해 시뮬레이터가 가져야 하는 기능들을 시험절차 및 운전 절차를 분석하여 도출하였으며 그 기능들을 각 사용자 인터페이스의 설계 목적에 맞도록 적절하게 배치하였다. 본 논문에서 소개하고자 하는 사용자 인터페이스는 Main Window에서 항상 감시가 가능하도록 설계된 Mimic Display, Information Tiles Display로 시뮬레이터 사용자 인터페이스의 핵심이라고 할 수 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.1
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• pp.61-70
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• 2020

In this study, the IOT-based desk layout method was proposed to complement the existing seating method and to improve the work efficiency. The IoT system for the desk layout needs determining the function, type and network protocol of the sensor to find out the working status of the desk to reasonably assist the worker's seat placement. A collection method was proposed. The algorithm used in Block Stacking was used when deciding how to allocate seats using the acquired data. As a result, we could suggest an arithmetic basis for rational desk layout in IoT environment and show that it can be applied to an advanced flexible seating system based on working type in addition to the preferences of employees in the future.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.3
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• pp.241-253
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• 2003

SCA (Software Communication Architecture), which has been adopted as a SDR(Software Defined Radio) Forum standard, provides a framework that successfully exploits common design patterns of embedded systems software. However, the SCA is inadequate as a component framework since it does not explicitly specify (1) a component model that defines how to express a component interface and how to implement it, (2) a package model that defines what and how to package in deployment units, and (3) a deployment model that defines the deployment environment and deployment process. In this paper, we propose a SCA-based component framework for SDR. Specifically, we present (1) a component model that defines a component as a specialized CORBA object that implements object management functionality, (2) a package model exploiting the existing XML descriptors of the SCA, and (3) a deployment model that defines a SCA-based deployment environment, a boot-up process that restores the deployment state, and a deployment process that supports lazy application instantiation and dynamic component replacement.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.662-665
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• 2008

This research attempts to develop 4D CAD function to support optimal road design by expanding the existing 4D CAD utilization system, which focused on construction phase, to the design phase. The functions such as earthwork simulation for selecting of road alignment, alternative route simulation and structure type simulation were suggested as functions to support road design. Through those virtual reality (VR) functions, visual confirmation of the condition of route and earthwork Is possible by the developed system, and an optimal alternative route can be selected by carrying out layout simulation of the alternative route. The functions presented in this research provide the decision making tools based virtual model for efficient support to road design.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.3
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• pp.491-498
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• 2016

The software defined networks implement a software network control plane, which is physically separated from the data plane. For wide area software defined network deployments, multiple controllers are required, and the placement of these controllers influences importantly the performance of the software defined networks. This paper proposes a Tabu search algorithm, which is one of the meta heuristic algorithms, for an efficient controller placement in software defined networks. In order to efficiently obtain better results, we propose new neighborhood generating operations, which are called the neighbor position move and the neighbor number move, of the Tabu search algorithm. We evaluate the performances of the proposed algorithm through some experiments in terms of the minimum latency and the execution time of the proposed algorithm. The comparison results show that the proposed algorithm outperforms the existing genetic algorithm and random method under various conditions.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1308-1317
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• 2009

The mass transit networks in Korea, such as buses, metro and subway, are co-related and the number of transfer points, in which a lot of pedestrian movement is generated, are rising. The functions of the transfer centers, in which several travel modes cross at a point, have to include convenience and comfort for pedestrians using the transfer centers, and such functions can make transit a more attractive travel option and thus eventually contribute to increases in ridership. However, the guidelines for station layouts and their assessments in transfer stations are not suggested so far. So the pedestrian pattern data (pedestrian walking distances and times, pedestrian approaching distances and times, pedestrian walking paths in the inside of stations) was collected and analyzed. Based on the results of the analysis, the ways to measure the quality of comfort for those who using transfer facilities were suggested using the times that pedestrians consume to transfer from a travel mode to another. The walking time of pedestrians at the inside of stations was also measured by pre-selected pedestrian pathways as the guidelines for station layout assessment in transfer facilities.

• Cartoon and Animation Studies
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• s.36
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• pp.393-416
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• 2014

Comics has three components: cuts, gap between cuts, speech balloons. Still, it is true that speech balloons are not commonly subject to the study for comics. A few preceding researches pinpoint exactly the morphological features and functions of speech balloons. In today when webtoon becomes generalized, these features and functions are continued as they are and are used in webtoon. We can catch that speech balloons are also affected since the environmental elements of web induce the change in the overall comics directing. There are two perspectives to sort out the features of speech balloons: first, the placement issue of speech balloons. The unlimited expansion of web space gives the environment for comicss to use the gap between cuts as wide as they can. It leads to turn out some of the ways to place the balloons, so we can sort them out general placement, exterior placement, the upper and lower placement, scroll-use type. Second, as the directing techniques for webtoon become digitalized by the morphological issue, speech balloon itself has been expanded its ways to express by various expression methods. Analyzing and classifying, recording the newly emerged conditions on the preceding study are worthy of trying and will become the cornerstone for the follow research.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.1
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• pp.106-110
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• 2008

The requirement for customized learning environments is increasing with the development of Web 2.0 technology To personalize services in E-learning, there are various functions available to the user. However, some components have fixed or inflexible functionality that limits what can be changed, and customization information has not been used for other purposes. In this paper, we propose an e-Space manager for the dynamic customization of learning environment control units. The proposed method can confirm which areas users have customized and how they have customized them. The advantage is that users can control their own learning environments, including not only the format, but also the content within the limits of the underlying system. The customization information is captured to confirm the competency model.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.2
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• pp.186-191
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• 2020

In this paper, we proposed an optimization technique for efficiently placing vehicles on decks in a vehicle-carrying ship to efficiently handle loading and unloading. For this purpose, we utilized the transformation method of the XML data representing the ship's spatial information, merging and branching algorithm and genetic algorithm, and implemented the function to visualize the optimized vehicle placement results. The techniques of selection, crossover, mutation, and elite preservation, which are used in the conventional genetic algorithms, are used. In particular, the vehicle placement optimization method is proposed by merging and branching the ship space for the vehicle loading. The experimental results show that the proposed merging and branching method is effective for the optimization process that is difficult to optimize with the existing genetic algorithm alone. In addition, visualization results show vehicle layout results in the form of drawings so that experts can easily determine the efficiency of the layout results.