• 디지털융복합연구
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• 제17권2호
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• pp.399-404
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• 2019

본 연구는 국내외 활발히 이용되고 있는 OTT, 온라인 동영상 서비스, 그 중 넷플릭스와 왓챠플레이를 중심으로 사용자의 서비스 이용 현황에 관해 연구하여 K-콘텐츠 동영상 서비스를 통한 한국 엔터테인먼트 발전 전략을 제시하는데 그 목적이 있다. 연구 방법으로는 1차 사례연구를 통해 국내의 동영상 스트리밍 서비스와 국외의 OTT서비스의 특징 및 한국 콘텐츠 제공성을 조사하였다. 그리고 2차로 넷플릭스와 왓챠플레이 이용자 8명을 대상으로 하는 심층 인터뷰를 통해 사용자 경험과 한국엔터테인먼트 동영상 스트리밍 서비스의 수요를 파악하였다. 그 결과, 전략에 관한 두 가지 포인트를 도출해낼 수 있었다. 첫째, 단독화 채널 전략. 둘째, 콘텐츠의 다양화와 개인화 전략. 이 연구는 넷플릭스와 왓챠플레이를 통해 한국 엔터테인먼트 산업의 방향성에 관한 전략을 제시했다는 점에 의의가 있다. 후속 연구를 통해 한국 엔터테인먼트 산업의 개선 방안을 보완하고, 한국 엔터테인먼트 발전 전략 수립에 도움이 되기를 기대한다.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제55권11호
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• pp.541-546
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• 2006

In a levitation magnet system with large air gap, numerical method is needed because analytic method cannot consider the leakage flux properly. This paper conducted an optimal design of a levitation magnet system with large air gap which was used for an OLED system, where evolution strategy was adopted for optimal design algorithm. Levitation forces near the initial design were calculated first by using finite element method to reduce the computation time. During the optimization process, levitation forces of arbitrary dimension were obtained using the interpolation of the levitation forces which were calculated previously Weight of the maget system was chosen as the object function and it was used minimized.

• Journal of Electrical Engineering and Technology
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• 제9권2호
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• pp.471-477
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• 2014

The novel permanent magnetic actuator (PMA) and its optimal design method were proposed in this paper. The proposed PMA is referred to as the separated permanent magnetic actuator (SPMA) and significantly superior in terms of its cost and performance level over a conventional PMA. The proposed optimal design method uses the evolutionary strategy algorithm (ESA), the kriging meta-model (KMM), and the multi-step optimization. The KMM can compensate the slow convergence of the ESA. The proposed multi-step optimization process, which separates the independent variables, can decrease time and increase the reliability for the optimal design result. Briefly, the optimization time and the poor reliability of the optimum are mitigated by the proposed optimization method.

• 한국실내디자인학회논문집
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• 제16권6호
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• pp.36-46
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• 2007

Regeneration of old buildings is one of the most imperative responses to the 21th century issue of sustainable urban architectural environment. In particular, creative circulation of generation which conversion means highlights the conversion as a new design method. In this study, by examining buildings built over the last decade, the mutual relationship between old elements of existing buildings and new elements of newly required functions was analyzed and types of relationships such as 'alien insertion', 'mediate intervention', 'endogenous expansional enveloping', 'contrastive confliction' and 'over-layering' were defined. In addition, design strategies including the paradoxical curio, fore-grounding and unification were derived from each relationship. Finally, according to the relation type and design strategy, this study suggests several features of conversion design; (1) maximization of symbolism using unfamiliarities - emphasizing futuristic or contextual symbol with intentional contrasts by preserving the work or using contemporary addition; (2) time confusion using neutral space - meeting the need by harmonizing and cooperating existing elements and new elements; (3) mutual emphasizing by individualization - revealing differences between old and new for an aesthetical tension; (4) synchronism by constructional combination - making the one unity of different layers; (5) expansion by enveloping - experience of visual reverse and creation of extra space by roofing above building groups. The reconversion should be continuously researched in the future since conversion is a sustainable design method for the future of architecture.

• 디자인학연구
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• 제15권2호
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• pp.233-242
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• 2002

매스커스터마이제이션(mass customization)은 서로 상반되는 개념인 대량생산과 맞춤생산의 결합어로서, 가전산업은 규모의 경제를 위한 대량생산방식을 가지고 있기 때문에 이의 도입이 늦어지고 있다. 본 연구에서는 기존 연구에서 규명된 매스커스터마이제이션 유형의 고찰과 사례연구를 통해, 제품디자인의 시각으로 재구성하여 가전산업에 적합한 모델을 선정하고 이에 따른 디자인 전략을 수립하는 것을 중심으로 논의하였다. 매스커스터마이제이션은 커스터마이제이션의 주체와 시점에 따라 생산자측 커스터마이제이션(manufacturer side customization), 유통측 커스터마이제이션(deliverer side customization), 소비자측 커스터마이제이션(customer side customization)으로 구분할 수 있으며, 가전산업은 이 중에서 소비자측 커스터마이제이션이 가장 적합한 것으로 나타났다. 이를 위해 소비자 참여 디자인에 의한 소비자 요구 수렴의 활성화와, 소비자가 전문적인 지식없이도 커스터마이제이션을 가능하게 하는 제품디자인에서의 모듈화를 디자인전략으로 제안하였다. 또한, 생산자측에 부담을 주는 모델다양화 보다는 표준 플랫폼(platform)을 통해 제3의 생산자가 선택사양을 생산/유통할 수 있도록 하는 방안도 제시하였다. 매스커스터마이제이션의 시작점은 소비자의 요구를 파악하는 것이며, 향후 매스커스터마이제이션의 활성화를 위해서는 제품디자인 비전문가들로 구성된 소비자 참여 디자인을 위한 방법 및 도구의 연구와 개발이 이루어져야 할 것이다.

• 건축구조
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• 제19권4호
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• pp.51-60
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• 2012

In recent years, BIM has been applied to many building projects. However, IFC, which is the core technology of data exchange in BIM, has not been used widely. In particular, IFC has almost never been used to represent rebars in RC structures. This is because the lack of understanding and utilization strategy for data model of IFC on rebars. The purpose of this study is to store and manage the data on rebars using IFC at the schematic design stage. For this, we investigated the data to represent rebars for RC members, such as beam, column, wall, and slab at the schematic design stage. And, we analyzed the data model of IFC on rebars at the schematic design stage. Based on these investigation and analysis on data, we proposed the strategy for utilization of the data model of IFC on rebars. Finally, for verification, we generated a sample IFC file to represent the rebars of a simple RC structure according to the proposed strategy and imported the sample IFC file into the software, which we developed for this study. Based on the results of the import, we concluded that the data on rebars can be stored and managed using the proposed strategy for utilization of the data model of IFC on rebars.

• 한국생활과학회지
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• 제14권1호
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• pp.179-192
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• 2005

The purpose of this study is to investigate into the practical cases of social marketing and to seek the practical strategy in fashion business. These practical cases were investigated through theses, professional books, fashion magazines, fashion newspapers, daily newspapers and web site, etc. The results of this study were as follows : 1. The social marketing by decision-making is able to practice and to set up a strategy in consumerism, humanism and environmentalism. 2. The social marketing by feedforward is able to practice and to set up a strategy in business strategy and product strategy. 3. The social marketing by administrative is able to practice and to set up a strategy in product development, price decision, distribution management and advertisement & promotion. 4. The social marketing by total system is able to practice and to set up a strategy in marketing planning and self-audits system.

• 한국초전도ㆍ저온공학회논문지
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• 제4권1호
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• pp.114-118
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• 2002

We introduce a design technique for homogeneous magnets using evolution strategy. The method has several advantages over existing techniques including: it allows complete flexibility in geometric constraints on the shape of both the coil and the homogeneous volume; it guarantees a globally optimal solution, and it automatically searches the minimum number of coils that satisfies given constraints.

• International Journal of Precision Engineering and Manufacturing
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• 제6권2호
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• pp.61-71
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• 2005

The study reported deals with investigating the feasibility of control strategy for a serial rigid link manipulator that applies impulsive torques at the joints. The strategy is illustrated for a planar three rigid link manipulator. An impulse-based concept which uses successive torque impulses on rigid link as the controller for motion correction was introduced. This control strategy was tested over the entire trajectory to demonstrate that the tracking error could be reduced effectively. The best condition for minimizing the tracking error with the least impulse input at each joint is investigated by considering one design and one operating parameter. The first was the damping in the system, and the second was the sampling time during operation. The results show that this approach can provide useful guidance for the design and control of robot manipulators that require minimum impulse feedback for accurate tracking.

• 한국CDE학회논문집
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• 제17권5호
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• pp.375-386
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• 2012

Most engineering design problems require analyses or simulations to evaluate objective functions. However, a single simulation can take many hours or even days to finish for many real world problems. As a result, design optimization becomes impossible since they require hundreds or thousands of simulation evaluations. The surrogate-based optimization (SBO) strategy became a remedy for such computationally expensive analyses and simulations. A surrogate-based optimization strategy has been developed in this study in order to improve global optimization performance. The strategy is a heuristic algorithm and it exploits not only multiple surrogates, but also multiple optimizers. Multiple optimizations of multiple surrogate models yield multiple candidate design points of optima. During the sequential sampling process, the algorithm ranks candidate design points, selects the points as many as specified, and builds the improved surrogate model. Various mathematical functions with different numbers of design variables are chosen to compare the proposed method with the other most recent algorithm, MSEGO. The proposed method shows superior performance to the other method.