• 제목/요약/키워드: interior point methods

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A Modified Approach to Density-Induced Support Vector Data Description

  • Park, Joo-Young;Kang, Dae-Sung
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제7권1호
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    • pp.1-6
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    • 2007
  • The SVDD (support vector data description) is one of the most well-known one-class support vector learning methods, in which one tries the strategy of utilizing balls defined on the feature space in order to distinguish a set of normal data from all other possible abnormal objects. Recently, with the objective of generalizing the SVDD which treats all training data with equal importance, the so-called D-SVDD (density-induced support vector data description) was proposed incorporating the idea that the data in a higher density region are more significant than those in a lower density region. In this paper, we consider the problem of further improving the D-SVDD toward the use of a partial reference set for testing, and propose an LMI (linear matrix inequality)-based optimization approach to solve the improved version of the D-SVDD problems. Our approach utilizes a new class of density-induced distance measures based on the RSDE (reduced set density estimator) along with the LMI-based mathematical formulation in the form of the SDP (semi-definite programming) problems, which can be efficiently solved by interior point methods. The validity of the proposed approach is illustrated via numerical experiments using real data sets.

이기종 이동통신 네트워크에서 에너지 효율화를 위한 DNN 기반 동적 셀 선택과 송신 전력 할당 기법 (DNN-Based Dynamic Cell Selection and Transmit Power Allocation Scheme for Energy Efficiency Heterogeneous Mobile Communication Networks)

  • 김동현;이인호
    • 한국정보통신학회논문지
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    • 제26권10호
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    • pp.1517-1524
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    • 2022
  • 본 논문에서는 하나의 매크로 기지국과 다수의 소형 기지국들로 구성된 이기종 네트워크를 고려하고, 그 기지국들간 협력적 다중 포인트 전송을 가정한다. 또한, 기지국과 단말간 채널은 경로 손실과 레일레이 페이딩으로 구성된다고 가정한다. 이러한 가정에서 주어진 기지국에 대해 단말이 달성할 수 있는 에너지 효율을 제시하고, 이기종 네트워크의 총 에너지 효율을 최대화하기 위한 동적 셀 선택과 송신 전력 할당의 최적화 문제를 공식화한다. 본 논문에서는 최적화 문제를 해결하기 위하여 비지도 딥러닝 기법을 제안한다. 제안된 딥러닝 기법은 기존의 반복적 수렴 방식의 기법들에 비해서 낮은 복잡도를 갖는 동시에 높은 에너지 효율을 제공하는 것이 가능하다. 시뮬레이션을 통해서 제안된 동적 셀 선택 기법이 최대 신호 대 간섭 및 잡음비 기법과 Lagrangian dual decomposition 기법 보다 높은 에너지 효율 성능을 제공함을 보여주고, 제안된 송신 전력 할당 기법은 최대 에너지 효율을 달성할 수 있는 trust region interior point 기법과 유사한 성능을 제공함을 보여준다.

시퀀스 내러티브 관점에 따른 '오설록 티하우스' 공간의 제품 전시 디자인 사례 연구 (A Case Study of Display Design of Space 'O'sulloc Teahouse' from the Point of Sequence Narrative)

  • 양현정;이현수
    • 한국실내디자인학회논문집
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    • 제23권1호
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    • pp.61-68
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    • 2014
  • Recently, there have been increasing attempts to pursue and express feelings such as sensibilities, emotions, and impressiveness in commercial spaces. One of such methods is to apply 'storytelling' to space designs. Applicability of storytelling to a space suggests that the contents of a space can be expressed through various mediums. Portraying events and situations through a single time continuity of a story is referred to as 'narrative'. The movement of users and sequence of contents are determined by a narrative. It provides different storytelling and a sense of place to each space through various roles, such as wide association, engraving, and image formation. A narrative can lead users to engage in different perceptions and behaviors even in spaces with the same content. Thus, this study is intended to examine the impact of space marketing in line with design narratives, assuming that narratives of commercial space designs will influence the formation of brand identity. The research methods are as follows. First, the definition of narratives in space design was established by examining narrative architectures. Second, design analysis tools for commercial spaces were established from the perspective of narratives through preceding studies. Third, the design narratives of different shops under the same brand were comparatively analyzed through a case study. To carry out a case study, a commercial space of 'O'sulloc' was selected, and its brand identity was studied from the narrative standpoint. The case study involved interior designs of 7 road shops of 'O'sulloc.' Among the 7 road shops, two of them with the biggest difference in design narratives were selected, and an observation survey was done on the users as a second analysis. Through the observation survey, actual design narrative experience was analyzed in 4 steps of introduction, development, turn, and conclusion. The findings are as follows. The design method of each shop varied, and different design elements were emphasized. Among various elements, the ones that reflect the brand identity of 'O'sulloc' the best were logo, product, and shape. During the process of narratives, the characteristics of each shop and user recognition and behavior varied depending on the degree of emphasis on a particular element. It suggests that space design narratives can influence the formation of brand identity. This study provides ideal directions of developing space designs necessary for forming brand identity from the standpoint of Korean traditional culture modernization. Future studies could discuss the economic feasibility of such designs.

장소성 형성의 공간구현 전략과 실행요소 연구 - 공공 공간 사례를 중심으로 - (A Study on the Implementing Strategies and components of Space for the Placeness Formation - Focus on Public Space Case -)

  • 김미영;문정민
    • 한국실내디자인학회논문집
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    • 제22권6호
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    • pp.190-198
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    • 2013
  • With globalization and the execution of a self-governing system, the government-oriented system has been transformed into a city-oriented system. The importance of the competitive power of a city is thus increasing. Because of this each region is trying to develop its own differentiated image and to create branding using unique historical and cultural resources and, as one of the strategies for this, public spaces have been developed. For a public space to be used as a means to promote the attractiveness of a city, creates a local image and works as a medium to help a community of people realize a pleasant life. Therefore, in this study, I am clarified theoretically the meaning of placeness and form factors. and study realization methods in the space around the public space case. The results of the study are as following. In the modern space, Place is to be understood as a recognition and experience. Therefore rather than spatial structure physical fixed, recognition through the human experience is an important feature of the place-making, it is necessary to access in spatial planning based on this point of view. The factors of the placeness formation are physical environment factors, activity elements of the human, the meaning factors. and these elements form the placeness through via interaction. Therefore, even space implementation of the place, it is necessary to grasp the elements of each, as well as the physical aspects in particular, planning programmatic and various functions must be parallel strategically. There is a need to implement a space device that can be carried out in space activities.

사진적 시각으로 본 근대건축공간의 낭만적 재현에 관한 연구 (A Study on the Romantic Reproduction of Modern Architectural Space by Photographic Vision)

  • 전희성;김문덕
    • 한국실내디자인학회논문집
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    • 제23권2호
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    • pp.71-79
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    • 2014
  • The purpose of this study is to elucidate that photo, which has been used as original photo's purpose of information transfer in modern age, is now used as romantic reproduction which is the communication methods of architect's idea and thought through photographic vision which is beyond photograph own capabilities. The photos of Mies van der Rohe and Le Corbusier's architectural works are taken as an example for studying and analysing the way of deliverying the concept of creative work in the functional spaces in the modern era. It looked at the way of modern archirecture configuration, which architects wanted to show by pictures, such as concurrency, movement, sense of exhibition and concept of time-space and planarity on photographic vision such as multiview, movement, daily life exclusion, scenography and perspective loss. Reflecting that, I presents Le Corbusier and Mies van der Rohe's intention through photo by analyzing their picture of architecture by way of photograph techniques-camera position moving, over exposure, photomontage, silhouette technic and overlap technic. Mies van der Rohe and Le corbusier demonstrated the change and manipulation of the their architectural photos in different point of view. They express their architectural theories by photos of their works and overcome the limitation of expression of constructed building designed by them. The photos of architects's works in the case study with photos and descriptions introduce to their design concept. The design concept of the architects have become ideal concept for many contemporary architects and keep reproducing through the photos of their architectural works.

The Improvement of Usability for Train Toilet Design

  • Han Seok-Woo;Jin Mi-Ja
    • 디자인학연구
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    • 제19권3호
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    • pp.195-206
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    • 2006
  • Design for improved usability is to understand products from the user's point of view so eventually to enhance the pleasantness users by reflecting it into the design. The philosophy of user-oriented design is an essence of human-centered product planning, and its application is more important for railway vehicle design, which is closely connected with everyday life. This study focused to define basic elements of train interior design concept, which considers convenience and comfort for passengers, by extracting and interpreting ergonomic requirements, as usability factors, of train toilet design. The study on user-oriented design of trains consists of the practice of sensibility engineering for the management of customers' emotions and its harmonious use on design, and aims on the embodiment of new ergonomic design. In the center, it has analyzed the criteria and characteristics of the user-oriented design and has concluded the design direction and components to a concrete idea and proposed prototypes, which may become a good example for train interior design later on. In addition, it proposes a direction, which may become a guideline of ergonomic design, to secure competition capacity. Moreover this study is concentrated on the physical environment and human behavior of train toilet users, on the analysis of factors necessary for adequate toilet design, and on the understanding of interface between its users. What is more, it proposes a module of development process and methods of approaching the interface. The study presents a design standard, under which the concrete data of the characteristics and practicable range and the convergent demands accelerate to the module could be confirmed and criticized. The study on the usability is going to contribute to more pleasant and comfortable train environments and consequently, it's going to create new values of increased railway competitiveness by design.

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시게루 반의 건축에 나타나는 생태적 표현특성에 관한 연구 - 하노버 엑스포 일본관의 종이튜브건축을 중심으로 - (A Study on Characteristics of Ecological Expression in Shigeru Ban's Architecture - Focus on the Paper Tube Architecture of Hanover Expo 2000 Japan Pavillion)

  • 조현미
    • 한국실내디자인학회논문집
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    • 제14권6호
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    • pp.75-85
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    • 2005
  • The 1990s' characteristics of Ecological architectural design would be choosing the traditional materials of the region's, the creative usage of construction methods, the expressive properties of materiality in spatial forms and so on. The overall organic relationships between human and men-made environments have been sublimated by the expression of poetic qualities of perception in ecological man-made environment. Hannover Expo 2000 did set up an opportunity to exposure the fact that Ecological Architecture will be the major trend in 21st Century's Architecture and its exploration in possible ways will be the most important matter. Japanese Architect Shigeru Ban's Japan Pavilion in this Exposition has shown the meaning of this turning point in Ecological Architectural thinking, which would be recognized as the convincing possibilities for the future architectural practice to the public. Thus this research has the purpose to study the meaning of the constructing action in Shigeru Ban's recent architectural space-making practice with the Paper Tube structural system. The creative foundation of Shigeru Ban's own method to apply paper tube -that is impossible material to pre-estimate- and other materials in the creation of architectural spaces would be searched in this paper. The period to this research will be between 1990s and 2000s, and the subject will be the experimental architecture of Shigeru Ban. The range of this research Is including the process of development in the paper tube architectural structure and joint system. This study would contribute to understand the intrinsic value of Shigeru Ban's Ecological architecture of the paper tube system, in which the relationship between the regional environment and human regaining the ecological abiogenesis.

까를로 스까르파 미술관 건축에 있어서의 컨버전디자인 수법과 특성에 관한 연구 (A Study on the Characteristic of Conversion Design Methods by Carlo Scarpa's Museum Architecture)

  • 김소진;박찬일
    • 한국실내디자인학회논문집
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    • 제17권1호
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    • pp.39-49
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    • 2008
  • Museum Architecture, passing through modem times, have been requested to make changes in order to respond to the necessities of current times as well, so that they come to develop various kinds of programs other than a mere exhibition. That is, museum began recognizing the diversity of activities available in the spaces and the openness to the public. And tried to keep up with the changes by linking the museum buildings with local community in urban architecture as a result. Conversion design is methodology aims at reforming old buildings into a museum or revitalizing buildings of historical significance into exhibition center, so that it made possible to utilize the texts of historical, cultural cities, which in turn contribute to the diversity of urban architecture and protection of buildings in environmental crisis. In the sense, the paper analyzes the life-long contribution and dedication of Carlo Scarpa, an Italian architect, in the conversion of museum architecture, and studies the style, techniques, and features witnessed from his architectural works, and finally offers an insight and a directing post to take advantage of diverse ways likely applicable in our urban architectures. Scarpa's features in his museum architecture are classified as follows: First, contrasting expression of reiteration and side by side to express the continuity of time Second, he conveyed implicated meanings through inserting contracted factors of the locality and traditionality. Third, his interest in formative works and handicraft had an influence on shaping conversion space Finally, expression of accidentally to change of a point of view.

지속가능 관점에서의 스페이스 브랜딩 디자인요소에 관한 연구 - 상업브랜드를 중심으로 - (A Study on the Design Elements of the Space Branding from the Perspective of Sustainability - Focusing on the Commercial Brand -)

  • 김수용;남경숙
    • 한국실내디자인학회논문집
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    • 제23권5호
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    • pp.14-24
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    • 2014
  • Modern enterprise activity and consuming pattern which have been continued since the industrial revolution are causing a great burden on the environment, so that the strategy for sustainability in the whole industry cannot but be realistic and inevitable alternative. Presently various brands which applied the concept of sustainability exist, however they also can be said to play a part in current environmental damage by creating value aiming at only growth and pursuing short-term profit in accordance with it with simple commercial logic. Hereupon, this research aimed at eventually preparing the base of guidelines of sustainable design of space branding by newly drawing the value of sustainability in the aspect of space branding and systematically deducing design elements along with it. For this, the researcher reestablished value and design elements for sustainability in space branding by comprehending the concept of sustainability, design method of sustainable design and environmental value hidden in it, after comprehending the concept of space branding and brand value suggestion and interrelation through advanced researches. The previous studies related to the existing space branding have had mainly focused on the design of the marketing point of view to promote consumer culture. But this study can be found the meaning that new roles and methods of design in space branding from the perspective of sustainable. Now companies need to figure out a variety of strategic ways to find the right balance depending on their situation between contradictory concept of 'Consumption' and 'Sustainability'.

문헌을 통해 살펴 본 정조의 사상체질 (The King Jeong-Jo's Sasang Constitution, Which wsa Based on the Annals of the Choson Dynasty(朝鮮王朝實錄), Hong Je jun Se(弘齋全書), GukSoBoGam(國朝寶鑑))

  • 김달래;김선형
    • 사상체질의학회지
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    • 제21권1호
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    • pp.44-52
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    • 2009
  • 1. Objectives Jeong-Jo's death has many mistery. So we understand rightly Jeong-Jo's death. we inspect closely medical records of 20 days before death(in The Annals of the Choson Dynasty(朝鮮王朝實錄), Hong Je Jun Se(弘齋全書), GukSoBoGam(國朝寶鑑). We understand medical treatment before death. It is based on Jeong-Jo's Constitution. So we trace the cause of a Jeong-Jo's death rightly. 2. Methods According to The Annals of the Choson Dynasty(朝鮮王朝實錄), Hong Je Jun Se(弘齋全書) GukSoBoGam(國朝寶鑑). We found out Jeoung-Jo's Sasang constitutional elemet. We point on Jeoung-Jo's nature and emotion, temperament and talent, features and way of speaking, physical appearance, healthy state, ordinary symptom, pathological syndromes and pharmacology. so documentary records was worthy of notice. 3. Results and conclusions 1. Jeong-Jo has prominent cheekbones,flat face. It belong to Tae-eum. 2. Jeong-Jo's physical appearance is mild,around,large. It belong ro Tae-eum. 3. Jeong-Jo's favorite food and herb were belong to Tae-eum interior febrile disease herb. which is Exhale Dispersing Qi 4. So even though Jeoung-Jo is Tae-eum, He had a weak body. It main cause that Smoking, insomnia, heave work, Hwa disease. 5. Jeong-Jo's is Interior febrile disease induced form the liver affected by heat in Tae-eumin

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