• 제목/요약/키워드: Material Selection

검색결과 966건 처리시간 0.042초

Small Target Detecting and Tracking Using Mean Shifter Guided Kalman Filter

  • Ye, Soo-Young;Joo, Jae-Heum;Nam, Ki-Gon
    • Transactions on Electrical and Electronic Materials
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    • 제14권4호
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    • pp.187-192
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    • 2013
  • Because of the importance of small target detection in infrared images, many studies have been carried out in this area. Using a Kalman filter and mean shift algorithm, this study proposes an algorithm to track multiple small moving targets even in cases of target disappearance and appearance in serial infrared images in an environment with many noises. Difference images, which highlight the background images estimated with a background estimation filter from the original images, have a relatively very bright value, which becomes a candidate target area. Multiple target tracking consists of a Kalman filter section (target position prediction) and candidate target classification section (target selection). The system removes error detection from the detection results of candidate targets in still images and associates targets in serial images. The final target detection locations were revised with the mean shift algorithm to have comparatively low tracking location errors and allow for continuous tracking with standard model updating. In the experiment with actual marine infrared serial images, the proposed system was compared with the Kalman filter method and mean shift algorithm. As a result, the proposed system recorded the lowest tracking location errors and ensured stable tracking with no tracking location diffusion.

독서치료 효과 측정을 위한 질적 심리평가도구 개발에 관한 연구 (The Development of a Qualitative Psychological Assessment of Bibliotherapy and the Examination of it Efficacy)

  • 임성관
    • 한국도서관정보학회지
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    • 제45권3호
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    • pp.141-168
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    • 2014
  • 공공도서관과 대학도서관을 비롯한 우리나라 문헌정보학계에서는 독서치료에 대한 관심이 증가하고 있고 다양한 독서치료 방법도 적용되고 있다. 하지만 그동안 독서치료 영역에서는 단순하고 획일적인 질문을 사용하여 내담자를 이해하고 진단하는 방법이 주로 사용되어 왔다. 그러므로 독서치료에 적합한 심리평가도구에 대한 개발이 필요한 상황이다. 왜냐하면 독서치료에서 심리평가도구는 프로그램에 대한 효과 검증에 앞서 독서치료사가 치료 대상자를 이해할 수 있는 기본적인 정보원으로서의 역할을 한다. 또한 자료 선정 및 관련 활동을 설계하는 기초가 되는 중요한 도구가 된다. 이에 본 연구에서는 독서치료 효과 측정을 위한 질적 심리평가도구로 활용할 수 있는 면담과 행동평가, 종합평가 보고서 양식을 개발하고, 실제 독서치료 프로그램 장면에 적용한 사례들을 제시하였다.

플라스틱 포장재의 잔존 인쇄 용제 감소 방안 (Study about decreasing methods of printing ink solvents residue amounts on plastic food package materials)

  • 안덕준;조훈일
    • 한국포장학회지
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    • 제10권1호
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    • pp.1-6
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    • 2004
  • Amount of residual ink solvent on the packaging materials from Korea, Japan and Europe was measured and compared. The amount of packaging materials from Korea was much higher than that of Japan and Europe. To reduce the residual amounts of ink solvent, aging condition of printed packaging materials including aging time and temperature was modified and evaluated. Aging with high temperature and short time ($60^{\circ}C$ and 24 hours) was more effective for reduction of residual amount of ink solvent than that with low temperature and long time. To find out change of reduction pattern of residual amount of solvent according to plastic packaging material, several monolayer and multilayer packaging materials were selected. Among the monolayer packaging materials, the amount of EVOH and PET was lower than that of polyolefin plastic film including PE and PP. PP/EVOH/PET among the selected multilayer film showed the lowest amount of residual ink solvent on food packaging materials. Result of this research revealed that the residual amount of ink solvent can be reduced by proper selection of aging condition with and by appropriate application of mutilayer plastic film.

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이세이 미야케 컬렉션에 나타난 A-POC의 특성에 관한연구 (Characteristics of A-POC in Issey Miyake Collection)

  • 주성금;정재철
    • 한국의류산업학회지
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    • 제19권3호
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    • pp.259-266
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    • 2017
  • In a contemporary fashion along with the advance of high technology, development of a new material is being increasingly emphasized and the need of creative convergence using a computer is being expanded. As a global designer who appeared through association between Japan and the West, Issey Miyake has been continually pursuing a new challenge and a solution using high technology, leading the globalization of Japanese fashion. This research aims at examining design characteristics of Issey Miyake collection's A-POC showing a new paradigm, that is, an innovative clothing manufacture system to input information on materials, colors and shapes into a textile machine based on the computer program and manufacture a cylindrical fabric for completion of seamless clothing without sewing or cutting. A-POC is evolving continually through the development of new materials including recycled fibers and organics together with diversification of processing technology. Besides, it shows design characteristics including an integrated manufacturing method, autonomy for customers' selection, practicality for comfortable wearing by the majority, environment friendly idea to reduce waste of fabrics and materials and a new presentation through convergence of exhibition concepts of modern art. This research on Issey Miyake's A-POC characteristics is expected to present a role of fashion designers in a new design idea and paradigm of contemporary clothing using high technology.

이공계박물관의 전시디자인에 관한 기초적 연구 -정보통신 박물관의 전시체계와 연출방법에 관한 사례연구를 중심으로- (A Basic Study on the Exhibition Design of a Science Museum -Focus on the Case Study on Exhibition System & Prestutation Method of a Museum of Telecommunication-)

  • 김종훈;임채진
    • 한국실내디자인학회논문집
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    • 제10호
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    • pp.58-68
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    • 1997
  • The core of character and concept in an exhibition space of contemporary museum is that the place for relics and materials changes into the place for spectators, the static exhibition place changes into the dynamic exhibition place, and the place for learning naturally during amusement. In other words, it could convey the conceptual exhibition object which is not the material object called a relic, it could be a place where is to investigate, participate, experience and enjoy with easily method to general public, and ordinary people are supposed to experience with integrative the world of intellectual, cultural and artistic which is inconcionsly rising a dimensiov. In order to response positively the change of these exhibition concept itself, exhibition system will be established through the analysis of realistic exhibition objects with the visulatization of theme or thought of an exhibitiov. In process of conveying image, the effective and concrete exhibition method and technique should be measured in order to realize the communication between spectators and exhibition objects. The purpose of this study is to find the methodology which is enable to establish the exhibition theme and presentation system through the selection and analysis of exhibition objects in major cases of a musem of ecience and engneering, to find the process model till the methodology applies to the space scheme, and to find finally the designed indicators which is applicable to the progress of exhibition desigv.

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초등학교 일반 교실 가구 개선을 위한 현황 및 제품 분석 연구 (A Study on the Status and Product Analysis for Improvement of Elementary School Classroom Furniture)

  • 문선욱;김자경
    • 한국실내디자인학회논문집
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    • 제26권5호
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    • pp.93-105
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    • 2017
  • The elementary school classroom is a space where children spend a long time during the day, during the six years of childhood, in which children are emotionally sensitive and emotionally important. Therefore, it is necessary to create a classroom that can develop emotions considering the developmental characteristics of children. However, the elementary school classroom in Korea has less change in the classroom envir- onment than in the rapidly changing curriculum, and classrooms and furniture considering emotional development are hard to find. Therefore, this study suggests the necessity of improvement for classroom furniture of elementary school, presents problem and consideration condition of present classroom furniture by analyzing the present condition of elementary school classroom in Korea and child development characteristic of school age, and proposes the improvement direction through analyzing domestic and foreign classroom furniture products. To do this, we checked the physical and developmental characteristics of children ages 8 to 13, confirmed the use of the classroom furniture in 10 schools located in Seoul, Gye- onggi and Incheon, analyzed the problems of these furniture, compared and analyzed the shape, material, and color of the products of 32 domestic companies teaching tools manufacturers focusing on desks, chairs, lockers, and teaching aid box that are commonly used in classrooms. Through this, this study provided basic data for the selection of ideal classroom furniture in the future.

조선 선각가공공정에서 부재가공을 위한 Bay 및 가공기계의 선택 (Bay and Machine Selection for the Parts Fabrication of Ship Hull Construction)

  • 박창규;서윤호
    • 산업공학
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    • 제12권3호
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    • pp.395-400
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    • 1999
  • Shipbuilding process is composed of hull construction, in which the structural body of a ship is formed, and outfitting, in which all the non-structural parts such as pipes, derricks, engines, machinery, electrical cable, etc. are manufactured, added and assembled. Hull construction can be classified into parts fabrication, block assembly and hull erection. Among them, the parts fabrication is the first manufacturing stage that produces components or zones needed for block assembly and hull construction. More specifically, the parts fabrication is performed through machining processes including marking, cutting, pressing, and/or forming. When material is entering into the parts fabrication stage, it is important for achieving the total efficiency of production to select one of production division, so-called 'bay,' as well as machine tools on which the part is fabricated. In this paper, given production quantities of parts in the fabrication stage, the problem is to optimally select machine tools and production division, such that the total flow-time is minimized as well as the workload among machines is balanced. Specifically, three mathematical models for flow-time minimization, load balance, and simultaneously considering both objectives, and a numerical example are analyzed and presented.

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공구세장비에 따른 알루미늄합금 7075의 절삭특성 및 가공가능영역에 관한 연구 (A Study on the Cutting Criteria and Cutting Characteristics Considering the Tool Slenderness Ratio for 7075 Aluminum Alloy)

  • 박현민;박현철;손황진;조영태;정윤교
    • 한국기계가공학회지
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    • 제12권4호
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    • pp.40-46
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    • 2013
  • When impeller machining needs to be machined over a length in order to avoid interference with neighboring surfaces between material and tool, there are no databases about cutting condition according to tool slenderness ratio. So selection and machining of cutting condition depends on expert's experience. Therefore, the purpose of this paper is deciding cutting condition in roughing and finishing process of impeller according to slenderness ratio of AL7075's end-mill that is the most commonly used for impeller. We have tested for about relation between Slenderness ration and fluctuation width of the cutting force, surface roughness and depth of cut ratio to observe cutting characteristics according to slenderness ratio. The experiments of cutting characteristics and processing criteria are compared with AL5052 which is existing information.

동심축 이중관 구조에서 유동기인진동 특성 고찰 (Investigation of FIV Characteristics on a Coaxial Double-tube Structure)

  • 송기남;김용완;박상철
    • 대한기계학회논문집A
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    • 제33권10호
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    • pp.1108-1118
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    • 2009
  • A Very High Temperature Gas Cooled Reactor (VHTR) has been selected as a high energy heat source of the order of $950^{\circ}C$ for nuclear hydrogen generation, which can produce hydrogen from water or natural gas. A primary hot gas duct (HGD) as a coaxial double-tube type cross vessel is a key component connecting a reactor pressure vessel and an intermediate heat exchanger in the VHTR. In this study, a structural sizing methodology for the primary HGD of the VHTR is suggested in order to modulate a flow-induced vibration (FIV). And as an example, a structural sizing of the horizontal HGD with a coaxial double-tube structure was carried out using the suggested method. These activities include a decision of the geometric dimensions, a selection of the material, and an evaluation of the strength of the coaxial double-tube type cross vessel components. Also in order to compare the FIV characteristics of the proposed design cases, a fluid-structure interaction (FSI) analysis was carried out using the ADINA code.

신경행동학적 연구의 동물모형 (Animal Models in the Neurobehavioral Research)

  • 김동구
    • 정신신체의학
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    • 제2권1호
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    • pp.46-51
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    • 1994
  • Model' is one of the well-used, but poorly understood word in the neurobehavioral research. After Darwin's evolutionary theory, it has been generally believed that human is different from animals in terms of the complexity, not of the essential. This notion could be applied to the mind as well as body. Therefore, it became possible to establish animal models in the scientific field of mind. Experimental analysis of the animal behavior becomes an important area for establishing an animal model of human psychopathology because behavior is the ambassador of the mind. A model emphasizes a structural correspondence between sets of causally related variables in two different domains such as the animal and the human. The first selection of elements of the two domains in correspondence called the initial analogy. Once the initial analogy is formed. causally related variables in the two domains are examined and arrayed The structural parallel is the formal analogy of a model, and similarities between corresponding variables are called material analogy. Models may serve any of three major functions ; heuristic, evidential and representative. In many cases, utilizing models may be more practical than directly assessing the domain of primary interest, since technical and/or ethical problems are more serious in the human domain. Although modeling is important to study human psychopathology, rare animal models approved to be a good model for the human psychopathology up to now. Developing the appropriate model is urgent to solve many problems raised from human psychopathology.

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