• 한국콘텐츠학회논문지
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• 제12권5호
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• pp.52-61
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• 2012

텍스트 시각화는 데이터 시각화의 한 분야로, 방대한 텍스트 데이터에 대한 다양한 분석 기법을 바탕으로 텍스트의 내용적 측면은 물론 구조적, 형식적 측면을 시각적으로 재현(represent)해내는 방법에 관한 연구이다. 본 연구에서는 이러한 텍스트 시각화 연구의 일환으로, 서적이 갖는 장르적 특성을 서적 본문에 직접 사용된 단어들을 바탕으로 파악해낼 수 있는 방법에 대해 고찰하고, 실험을 통한 검증을 바탕으로 서적 장르 시각화의 요소를 도출한 후, 이를 직관적이고 효율적으로 시각화하는 방법에 대해 서술하였다. 본 연구에서 제안하는 시각화는 첫째, 책에 직접 사용된 단어를 토대로 책의 실질적 장르를 파악할 수 있으며, 둘째, 시각화 결과 이미지를 통해 해당 서적이 어떤 장르와 가장 가까운지 한 눈에 파악할 수 있을 뿐 아니라, 한 책이 갖는 복합 장르적 특성을 알 수 있도록 해주고, 이미지 내의 점(dot)의 개수와 곡선의 곡률, 밝기 등을 통해 대표 장르로 파악된 장르의 근접도(유사도)를 짐작할 수 있다는 점에서 그 의의를 갖는다. 나아가 개별 소비자 자신이 선호하는 서적들에 대한 적용을 통해 개인별 선호 서적(또는 장르) 이미지를 제공하는 등 서적 추천 시스템과 같은 북 커스터마이징(book customizing)과 같은 분야에도 다양하게 활용될 수 있다.

• 패션비즈니스
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• 제13권6호
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• pp.20-30
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• 2009

The purpose of this study is to develop the effective customized elderly fashion marketing process based on the web site, where older customer will be able to choose various fabrics and to try them out. This aims to establish new prototype of internet shopping mall for customized elderly fashion clothing. In this study, new method of product presentation on the online shopping mall is proposed to offer product information through 3D virtual reality. With the online shopping mall(SATC Mall) as a showcase, we presented virtual mapping system so that it enable the customers to select the fabrics and to see exactly how chosen fabric will look when applied to image of clothing. As an initial test of the application of simulation to measure 3D visualization of product, mapping software Vision Easy Map Pro Version 6.0(NedGraphics) Vision Easy Map Viewer Version 5.0(NedGraphics) were chosen and applied. By using this mapping system, the fabric change of the apparel product could be made on the internet shopping web site. However, this approach has been successful applied for presenting and customizing garment products. Future research will focus on the integration of mapping coordination into SATC Mall.

• 한국게임학회 논문지
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• 제12권1호
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• pp.91-101
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• 2012

아바타의 젠더는 MMORPG 플레이어의 아이덴티티를 구성하는 기본 요소로서, 게임 특성상 플레이어가 스스로 창조할 수 있는 커스터마이징 시스템을 갖추고 있어 아바타 젠더에 관해 현실과는 다른 태도를 보임을 알 수 있다. 가상공간에서 젠더 커스터마이징은 자신을 보다 다양하게 표현하고자 하는 아이덴티티의 확장이라고 보아야 할 것이다. 다수의 유저들은 젠더스와핑된 아바타를 관리하고 있으며 특히 남성이 여성성의 아바타 페르소나를 선호하는 것으로 조사되었다. 본 연구에서는 Q 방법론를 통해 플레이어의 젠더에 관한 태도를 분석하고, 그 과정에서 젠더스와핑의 일반화 현상 및 동기 요인을 확인할 수 있었다. 본 연구 자료는 MMORPG 커스터마이징 시스템의 사용성 평가를 위한 중요한 기준으로 활용할 수 있을 것이다.

• 한국IT서비스학회지
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• 제12권4호
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• pp.449-459
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• 2013

The software which is used for electronic bulletin boards have shortcomings that the addition of new function and new information's type to the order point software is very difficult, and the aggressive adaption of newly introduced type of media is impossible because the software is developed by custom solution. Eventually new cost and time are required to enhance functionality or performance to software of DID(Digital Information Display). In this paper, we proposed the scheme to package DID's contents and to customize it using plug-in method. We conducted a case study of this scheme. The platform which can install Apps to DID as one of content was designed. Apps can be inserted by plug-in type on DID platform and run separately with DID framework. As a result, We got advantage that various contents, functions and Apps which are drived on Android can be displayed without any restriction and dependency because Apps itself is one of dynamic notice object. This solution increase reusability of Apps or contents, and can be used easily in various places such as airports, stations, terminals, and front desk by customizing.

• International Journal of Internet, Broadcasting and Communication
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• 제12권4호
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• pp.55-60
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• 2020

This study aims to apply Arduino and 3D printing technology considered as a key subject in the age of 4th industrial revolution which is a step 1 for customizing and applying the process of production by chemical molding companies producing environment-friendly biodegradable packaging materials to the 3D printing teaching in universities. Step 3 is applied to IoT for Arduino application, and 3D printing technology is also used on the basis of teaching creative integrated human resource. Integration of Arduino with 3D printers is based on the assumption that middle- and high-school students can learn it step by step to higher levels and university students majoring or not majoring in computing science can also have computing skills for solving 3D printing-based problems. For IoT application in this study, the 3D printing technology is applied to the external shape of products for producing an Arduino-based lighting fixture. The applied 3D printing technology is further extended to teaching modeling of producing packaging materials by chemical product molding companies in the age of 4th industrial revolution.

• 대한전자공학회논문지SD
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• 제41권1호
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• pp.35-46
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• 2004

Vertical-Cavity Surface-Emitting Laser(VCSEL)는 짧은 공진기(cavity)와 여러 층의 distributed Bragg reflector(DBR)층을 거울로 사용하기 때문에, edge-emitting lasers(EELs)와는 달리, 광출력 및 변환효율 등의 예측이 쉽지 않다. 그 주된 원인은 VCSEL에서는 Fabry-Perot 레이저와는 달리, 각각의 DBR 거울 층들이 손실을 가지고 있기 때문으로 이에 따라 상/하향광출력 비나 변환효율을 계산해 내는 데에 어려움이 있다. 그러나 전달 행렬 방법(transfer matrix method, TMM)을 이용하면, VCSEL과 같은 여러 층을 갖는 구조에서의 성능 지수를 정확히 계산할 수 있다. 이 논문에서는 전달 행렬 방법을 이용하여 VCSEL의 구조 변화에 따른 문턱이득, 문턱전류 밀도 및 변환효율을 구하였으며 문턱전류 및 변환효율 모두를 고려한 VCSEL의 최적 구조 설계 기법을 제시하였다.

• 한국음향학회지
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• 제30권4호
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• pp.167-180
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• 2011

Recently, 3-D audio technologies are commonly implemented through headphones. A major problem of the headphone-based 3-D audio is in-the-head localization, which occurs due to the inaccurate Head-Related Transfer Function (HRTF). Since the individual measurements of HRTFs are impractical, there have been several researches for HRTF customization. In this paper, an efficient method of customizing HRTFs for the sound externalization is proposed. Firstly, it is determined which part will be customized in HRTF through psychoacoustical experiments. Then, the method controlling spectral notches and envelopes to provide individual localization cues are described. Since the proposed method is based on a critical-band rate, the structure is much simpler than that of previous studies, but still effective. The performance was evaluated through a series of subjective tests, and the results confirmed that the customized HRTF using proposed method could replace the measured individual HRTF successfully.

• 한국CDE학회논문집
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• 제10권4호
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• pp.254-261
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• 2005

The purpose of this research is to develop a method for cutting non-circular holes on a bent thick plate. Generally in order to cut the holes on the large plates, a special-purpose 5-axis machine is needed. However, such a machine is unavailable in most of the machine shops. This paper provides a description of such a method that utilizes a general-purpose 5-axis water-jet machine in place of the special-purpose machine: First, the bent piece is transformed into a flat plate, where the shape of the holes is reconstructed by considering deformation during bending. Then, after a 5-axis NC data is generated, the holes on the flat plate are cut using the 5-axis water-jet machine. The final step is to return to its, original shape by bending the plate with its newly-cut holes. The proposed methodology is implemented as a dedicated system by customizing a commercial CAD/CAM system. Some illustrations are provided throughout the paper in order to show the validity of the proposed methods and the developed system.

• 대한임베디드공학회논문지
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• 제12권5호
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• pp.319-330
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• 2017

In remote USV (Unmanned Surface Vehicle) maritime operation, the remote operation and control technic and autonomous control technic is required and the emergency mode algorithm is needed certainly for sailing and accomplishing various surveillance, reconnaissance, and underwater search missions of USV. In this paper, we review the countermeasures in emergency situation of the existing USV system (Barracuda) and propose the emergency mode algorithm considering the operation and control, and autonomous control level for the stable USV operation in case of emergency. We analyzed the autonomous control level in view of the mission complexity and environmental difficulty, and human interface, and verified the performance of the autonomous control level when we apply four emergency mode algorithms. It is expected that more stable and reliable operation and cotrol are possible if the proposed algorithm is applied to the environments requiring the various multi-mission USV sailing and mission achievement.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1655-1673
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• 2018

Mobile computing environment is subject to the constraints of bounded network bandwidth, frequently encountered disconnections, insufficient battery power, and system asymmetry. To meet these constraints and to gain high scalability, data broadcasting has been proposed on data transmission techniques. However, updates made to the database in any broadcast cycle are deferred to the next cycle in order to appear to mobile clients with lower data currency. The main goal of this paper is to enhance the transaction performance processing and database currency. The main approach involves decomposing the main broadcast cycle into a number of sub-cycles, where data items are broadcasted as they were originally sequenced in the main cycle while appearing in the most current versions. A concurrency control method AOCCRBSC is proposed to cope well with the cycle decomposition. The proposed method exploits predeclaration and adapts the AOCCRB method by customizing prefetching, back-off, and partial backward and forward validation techniques. As a result, more than one of the conflicting transactions is allowed to commit at the server in the same broadcast cycle which empowers the processing of both update and read-only transactions and improves data currency.