• 한국정밀공학회지
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• 제27권1호
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• pp.125-133
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• 2010

A versatile micro-robotic platform for micro/nano scale assembly has been demanded in a variety of application areas such as micro-biology and nanotechnology. In the near future, a flexible and compact platform could be effectively used in a scanning electron microscope chamber. We are developing a platform that consists of miniature mobile robots and a compact positioning stage with multi degree-of-freedom. This paper presents the design and the implementation of a low-cost and compact multi degree of freedom position sensor that is capable of measuring absolute translational and rotational displacement. The proposed sensor is implemented by using a CMOS type image sensor and a target with specific hole patterns. Experimental design based on statistics was applied to finding optimal design of the target. Efficient algorithms for image processing and absolute position decoding are discussed. Simple calibration to eliminate the influence of inaccuracy of the fabricated target on the measuring performance also presented. The developed sensor was characterized by using a laser interferometer. It can be concluded that the sensor system has submicron resolution and accuracy of ${\pm}4{\mu}m$ over full travel range. The proposed vision-based sensor is cost-effective and used as a compact feedback device for implementation of a micro robotic platform.

• Journal of Platform Technology
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• 제6권3호
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• pp.3-9
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• 2018

This paper describes the design and trial development of a system that supports continuous hazard mapping by local residents in their daily life. We performed an interview survey to design our system in a model traditional town in Saga Prefecture, Japan. The results show that despite continued efforts, many practical problems remain and residents feel unsafe. Considering these results, we designed and developed a unique information and communication technology-based support system that contributes to community-based disaster prevention and reduction. The continuous resident participation and posting design are the core concept for our community-based approach. Our system continues to support making a hazard map by integrating the community-based hazard information. Local residents register information (disaster types, risk level, photographs, comments, positional information) about locations that could be dangerous in a disaster. In addition, our system enables information sharing through a Web server. We expect that this information sharing will allow local hazard information for each district to be used.

• 대한음성학회지:말소리
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• 제51호
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• pp.151-165
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• 2004

For educational and research purposes, a Korean speech recognition platform is designed. It is based on an object-oriented architecture and can be easily modified so that researchers can readily evaluate the performance of a recognition algorithm of interest. This platform will save development time for many who are interested in speech recognition. The platform includes the following modules: Noise reduction, end-point detection, met-frequency cepstral coefficient (MFCC) and perceptually linear prediction (PLP)-based feature extraction, hidden Markov model (HMM)-based acoustic modeling, n-gram language modeling, n-best search, and Korean language processing. The decoder of the platform can handle both lexical search trees for large vocabulary speech recognition and finite-state networks for small-to-medium vocabulary speech recognition. It performs word-dependent n-best search algorithm with a bigram language model in the first forward search stage and then extracts a word lattice and restores each lattice path with a trigram language model in the second stage.

• 한국컴퓨터정보학회논문지
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• 제16권11호
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• pp.1-8
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• 2011

하나의 제품에 다양한 기능들이 복합적으로 통합하는 단일칩시스템 (System-on-a-Chip, SoC)의 설계 요구가 증가하는 반면, 시장이 요구하는 적기 출하 시점은 점점 짧아지고 있다. 따라서 이러한 요구를 만족시키기 위해서 소프트웨어와 하드웨어를 통합하여 검증하는 것이 무엇보다 중요하다. 이러한 하드웨어-소프트웨어 통합 검증을 조기에 수행하는 방법으로 IP(intellectual property) 재사용을 통한 가상 플랫폼 기반 설계 방법이 널리 연구되고 있다. 본 논문에서는 기존 ARM프로세서 기반 S3C2440A 시스템을 가상 플랫폼을 이용하여 재설계하고, JPEG 디코더를 S3C2440A 가상 플랫폼에 구현하여 성능을 평가하였다. 또한, ARM 프로세서 기반 인라인 어셈블리어를 이용하여 JPEG 디코더를 최적화하는 기법을 소개하였고, 이를 가상 플랫폼에 구현하여 성능 향상을 검증하였다. 이러한 가상 플랫폼 기반 설계를 통해 하드웨어 및 소프트웨어의 통합 검증이 가능하고, 시장 적기 출하(Time-to-Market) 요구에 신속히 대처할 수 있다.

• ETRI Journal
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• 제30권6호
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• pp.757-764
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• 2008

In this paper, we present a design evaluation system with visualization and interaction of mobile devices using virtual-reality-based prototypes which can be used to easily change design parameters and simulate embedded software. To evaluate and predict affective-engineering-based design preferences for mobile devices under a virtual environment, we have developed a high quality visualization platform which creates images that look similar to real mobile devices in addition to real-time simulation of realistic motions and functions of mobile devices. To support a quantitative usability test scenario for external design shape, we also have built a system which consists of a mixed-reality-based testing platform for measuring hand load.

• 한국멀티미디어학회논문지
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• 제25권7호
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• pp.973-982
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• 2022

As a new marketing tool, gamification design has been used in marketing practice by e-commerce platforms, aiming to motivate consumers to participate. Based on this, by sorting out relevant domestic and foreign literature, analysis of actual business cases, in-depth interviews with users, experiments and data analysis, this study extracts and describes in detail the elements of the e-commerce platform gamification incentive mechanism. Draw conclusions through research: (1) The incentive mechanism of gamification design of e-commerce platform contains four main dimensions : The richness of symbols, The fun of gamification, The contagiousness of Social and The seduction of achievement. (2) The four elements are closely related, and these can work on a system at the same time and have significant mutual effects. (3) Achievement and fun can bring intrinsic motivation to consumers, while sociability and symbols can bring external motivation to consumers and promote internal motivation through external motivation. (4) The seduction of achievement and the richness of symbol are most closely related.

• 한국전자거래학회지
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• 제7권1호
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• pp.35-50
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• 2002

Recently, payment method is one of the most hot issues for transaction of contents in mobile and internet markets. Many kinds of mobile contents services are rapidly growing with the combination of internet application services. Payment method algorithms are demanded for the stable transaction between producer and consumer. Security protocol algorithms are widely adapted for mobile Platform terminals. In this Paper, we described security mechanism for the current wireless internet services and compared with the performance result. There are security protocols that based on java machine platform or WAP protocols. The system is based on J2ME technology for the java mobile platform. Based on this technology, a security system is proposed for the service of mobile commerce electronic payment. The system is designed for the stability of transaction so that it enables to apply into many kinds of internet payment system.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.280-282
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• 2015

본 연구는 소상공인이 추가적인 외부 전문 인력 도움 없이 고객 접점을 활용 할 수 있으며 모바일 앱과 모바일웹, 홈페이지를 자동으로 만들 수 있게 한다. 자동화 플랫폼 시스템은 Single Page Application, 크로스플랫폼 기반의 네이티브 모바일 앱, N-Screen 기반의 콘텐츠 구축, 사설 클라우드 기반의 PaaS구축 기술, P2P네트워크 기반의 파일공유 및 멀티미디어 스레드 기술을 접목하고 자동화된 플랫폼을 이용하여 소상공인이 고객과 쉽게 소통 할 수 있는 방법을 연구한다.

• 한국산학기술학회논문지
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• 제15권12호
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• pp.7340-7349
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• 2014

Building Information Model(BIM)과 Geographic Information Systems(GIS)는 각각 건설 분야의 전 생애주기(기획-설계-시공-유지관리) 단계에 걸쳐 다양하게 활용되어 왔다. 최근, BIM과 GIS의 통합을 통해 시너지 효과를 발휘하기 위한 BIM/GIS 통합플랫폼의 설계에 대한 연구가 수행되고 있다. 본 논문에서는 건설기획 및 설계 단계에 BIM/GIS 플랫폼을 활용하기 위한 시나리오 및 상세 기능을 정의한다. 첫째, 업무를 분석하여 BIM/GIS 플랫폼을 활용하기 위한 단계 별 시나리오를 도출하고 해당 시나리오를 구현하기 위한 플랫폼 기능을 도출한다. 둘째, 각 플랫폼 기능을 구성하는 SW 기능을 정의한다. 건설기획 단계에서는 입지선정 및 노선선정 업무를 대상으로 하였으며, 건설 설계 단계에서는 기본설계와 실시설계 업무를 대상으로 하였다. 본 연구의 결과는 향후 BIM/GIS 통합플랫폼 설계에 활용될 수 있을 것이다.

• 한국실내디자인학회논문집
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• 제24권2호
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• pp.58-66
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• 2015

This study was conducted to determine a 'platform' as a mean of interactions between users in contemporary spatial design and network(web) and to verify the similarity between the platform and space of Rem Koolhaas, one of the leading contemporary architects of our time. A platform, referring to tangible or intangible structures designed for common use in a variety of ways, is activated by the networking effect of participants. Aided by the recent development of the IT industry encompassing computers and smart phones, the concept of platforms is extending to all areas of modern life, in general. In this study, the similarity between architectural space and platforms after reviewing the computer-related platforms, ecological features that refer to virtuous circulation, and various cases applied with platform thinking. Through this process, the platform feature of architectural platforms is defined as the 'open spatial system combined with control and freedom that acts more than one function and facilitates direct/indirect exchanges between users regardless of its type or size'. Establishing the criteria for spatial analysis based on this definition, analysis was conducted on interior design projects that were planned and conducted by Rem Koolhaas after 2000. As a result of this analysis, it was learned that Rem Koolhaas designs space using dual space structures where the extension and mixture of the user group, mixture of various functions defined by users, loose control that induces voluntary participation, community reinforcement, and inducement of accidental events, and opening and closing coexist. In addition, this design approach was found to be a design strategy similar to the concept of platforms that began to be developed in the IT field.