• Title/Summary/Keyword: Research-based

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Research on Success & Failure of Platform business in perspective of multi-method research (결합형 방법론 관점에서의 플랫폼 비즈니스의 성공과 실패에 대한 연구)

  • Jin, Dong-Su
    • International Commerce and Information Review
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    • v.15 no.2
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    • pp.387-410
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    • 2013
  • The competition aspect of business has been transformed from competition among companies to competition among ecosystem, and has been grown to platform based business, which is defined as ecosystem among business. Coming to the spotlight with the advantages of platform business combined software and hardware like Apple, platform business have been emerging in many fields. In this research, we define platform and platform based business, and then review related researches. After this, we review four representative research methodologies which are Yin(2011)' s case analysis research, Eisenhardt(2007)' s case analysis research, Romano etc' s web based qualitative data analysis method(2003), and Creswll(2010)' s open coding technique. And then, we suggest this research' s natural methodology combined with the advantages of four research methodologies. Based on our research methodology, we choose three high commercialized categories, which are smartphone platform business, social platform business, and search engine platform business. And then, we choose seven companies in three categories with success cases & failure cases, and analysis each case in perspective of our research methodology. And then, we suggest critical success & failure elements. Based on our findings, we suggest three strategic elements for the longevity of platform based business. Finally, we suggest the limitations of our research and further research issues.

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Virtual Reality Content-Based Training for Spray Painting Tasks in the Shipbuilding Industry

  • Lee, Gun-A.;Yang, Ung-Yeon;Son, Wook-Ho;Kim, Yong-Wan;Jo, Dong-Sik;Kim, Ki-Hong;Choi, Jin-Sung
    • ETRI Journal
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    • v.32 no.5
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    • pp.695-703
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    • 2010
  • Training is one of the representative application fields of virtual reality technology where users can have virtual experience in a training task and working environment. Widely used in the medical and military fields, virtual-reality-based training systems are also useful in industrial fields, such as the aerospace industry, since they show superiority over real training environments in terms of accessibility, safety, and cost. The shipbuilding industry is known as a labor-intensive industry that demands a lot of skilled workers. In particular, painting jobs in the shipbuilding industry require a continuous supplement of human resources since many workers leave due to the poor working environment. In this paper, the authors present a virtual-reality-based training system for spray painting tasks in the shipbuilding industry. The design issues and implementation details of the training system are described, and also its advantages and shortcomings are discussed based on use cases in actual work fields.

A Meta-Analysis of Research on the Impact of Microcomputer-Based Laboratory in Science Teaching and Learning

  • Han, Hyo-Soon
    • Journal of The Korean Association For Science Education
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    • v.23 no.4
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    • pp.375-385
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    • 2003
  • In an effort to provide information about the effect of Microcomputer-Based Laboratory (MBL) use in science teaching and learning on student achievement and attitudes, a review of research analyzed studies was done between 1981 and 2001, using a meta-analysis procedure. Thirty-seven published and unpublished studies were reviewed. Use of MBL was shown to be potentially effective in the following condition of class; two students, physics teaching, more than one topic, or at the college level. Appropriate research design strategies, financial support (including hardware and software), and the use of more than one instrument for assessing the effect of the MBL instruction are crucial factors for more informative research studies. While helpful in many respects, the prior research revealed a number of problems related to the use of MBL in school science teaching and learning. The prior research does not support the desired intention described in the theory-based outcomes and reveals so little about how teachers and students use MBL, how it influences their teaching and learning, and how effectively it fits into the existing science curriculum. In order to know if the integration of MBL in the existing school science is worth it or not, more careful research design and comprehensive research should be done.

Global Histidine Phosphoproteomics in Human Prostate Cancer Cells

  • Gao, Yan;Kim, Doeun;Sung, Eunji;Tan, Minjia;Kwon, Tae Gyun;Lee, Jun Nyung;Lee, Sangkyu
    • Mass Spectrometry Letters
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    • v.11 no.3
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    • pp.52-58
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    • 2020
  • Histidine phosphorylation (pHis) is increasingly recognized as an important post translational modification (PTM) in regulating cellular functions in eukaryotes. In order to clarify the role of pHis in mammalian cell signaling system, a global phosphorylation study was performed in human prostate cancer cells, PC-3M, using a TiO2 affinity chromatography. A total number of 307 pHis sites were identified on the 268 proteins among total identified 9,924 phosphorylation sites on 3,316 proteins. In addition, 22 pHis proteins were classified in enzyme category. This report provides the first database for the study of pHis in prostate cancer cells.

Interactive Multiview Contents Authoring System based on MPEG-4 (MPEG-4 기반 대화형 복수시점 영상콘텐츠 저작 시스템)

  • Lee, In-Jae;Ki, Myung-Seok;Kim, Wook-Joong;Kim, Kyu-Heon
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2005.11a
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    • pp.209-212
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    • 2005
  • This paper introduces interactive multi-view contents authoring system based on MPEG-4. The MPEG-4 standard, which aims to provide an object based audiovisual coding tool, has been developed to address the emerging needs from communications, interactive broadcasting as well as from mixed service models resulting from technological convergence. Due to the feature of object based coding, it has been considered that MPEG-4 is the most suitable for interactive broadcasting content production. This feature is suitable for creation of the content which provides multiple views of object or scene in interactive manner. In this paper, we categorize the multi-view visual content into two types: panoramic multi-view content and object multi-view content. And design and implementation of the authoring system for interactive multi-view contents is presented. We believe that the proposed method can be effectively used for further deployment of MPEG-4 content to various interactive applications.

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Effect of Curing Conditions of a Poly(4-vinylphenol) Gate Dielectric on the Performance of a Pentacene-based Thin Film Transistor

  • Hwang, Min-Kyu;Lee, Hwa-Sung;Jang, Yun-Seok;Cho, Jeong-Ho;Lee, Shic-Hoon;Kim, Do-Hwan;Cho, Kil-Won
    • Macromolecular Research
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    • v.17 no.6
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    • pp.436-440
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    • 2009
  • We improved the performance of pentacene-based thin film transistors by changing the curing environment of poly(4-vinylphenol) (PVP) gate dielectrics, while keeping the dielectric constant the same. The field-effect mobility of the pentacene TFTs constructed using the vacuum cured PVP was higher than that of the device based on the Ar flow cured gate dielectric, possibly due to the higher crystalline perfection of the pentacene films. The present results demonstrated that the curing conditions used can markedly affect the surface energy of polymer gate dielectrics, thereby affecting the field-effect mobility of TFTs based on those dielectrics.

Behavior Tracing Program to Analyze Malicious Features of Unknown Execution File (알려지지 않은 실행파일의 악의적인 특징들을 분석하기 위한 행위추적 프로그램)

  • Kim, Dae-Won;Kim, Ik-Kyun;Oh, Jin-Tae;Jang, Jong-Soo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2011.04a
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    • pp.941-944
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    • 2011
  • 컴퓨팅 환경에서 각종 보안 위협들의 핵심에는 악성 실행파일들이 있다. 전통적인 시그니처 기반의 보안 시스템들은 악의적인 실행파일들 중에서 알려지지 않은 것들에 대해서는 런타임 탐지에 어려움이 있다. 그러한 이유로 런타임 탐지를 위해 시그니처가 필요 없는 정적, 동적 분석 방법들이 다각도로 연구되어 왔으며, 특히 악성 실행파일을 실제 실행한 후 그 동작상태를 모니터링 하는 행위기반 동적 분석방법들이 많은 발전을 이루어왔다. 그러나 대부분의 행위기반 분석방법들은 단순히 몇 가지 행위나 비순차적인 분석정보를 제공하기 때문에, 차후 악성여부를 최종 판단하는 방법론에 적용하기에는 그 분석정보가 충분하지 않다. 본 논문에서는 악성 실행파일이 실행되는 동안 발생할 수 있는 행위들을 분류하고, 이를 모니터링 하는 프로토타입 프로그램을 구현하였다. 또한, 악성 실행파일을 직접 실행하는 것은 제한된 컴퓨팅 환경에서 이루어지기 때문에, 실제 악성 실행파일을 모니터링 한 결과를 토대로 행위기반 모니터링 방법이 극복해야 될 이슈들에 대해서도 언급하고 있다.

Volumetric quantification of bone-implant contact using micro-computed tomography analysis based on region-based segmentation

  • Kang, Sung-Won;Lee, Woo-Jin;Choi, Soon-Chul;Lee, Sam-Sun;Heo, Min-Suk;Huh, Kyung-Hoe;Kim, Tae-Il;Yi, Won-Jin
    • Imaging Science in Dentistry
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    • v.45 no.1
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    • pp.7-13
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    • 2015
  • Purpose: We have developed a new method of segmenting the areas of absorbable implants and bone using region-based segmentation of micro-computed tomography (micro-CT) images, which allowed us to quantify volumetric bone-implant contact (VBIC) and volumetric absorption (VA). Materials and Methods: The simple threshold technique generally used in micro-CT analysis cannot be used to segment the areas of absorbable implants and bone. Instead, a region-based segmentation method, a region-labeling method, and subsequent morphological operations were successively applied to micro-CT images. The three-dimensional VBIC and VA of the absorbable implant were then calculated over the entire volume of the implant. Two-dimensional (2D) bone-implant contact (BIC) and bone area (BA) were also measured based on the conventional histomorphometric method. Results: VA and VBIC increased significantly with as the healing period increased (p<0.05). VBIC values were significantly correlated with VA values (p<0.05) and with 2D BIC values (p<0.05). Conclusion: It is possible to quantify VBIC and VA for absorbable implants using micro-CT analysis using a region-based segmentation method.

Evidence-Based Practice in Neurological Physical Therapy (2) -Information Research Technology for Sustainable Practice of EBP- (신경계물리치료에서의 근거중심실기(2) -지속가능한 EBP 수행을 위한 정보검색 기술-)

  • Lee, Moon-Kyu;Kim, Tae-Yoon;Lim, Jae-Heon
    • PNF and Movement
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    • v.15 no.2
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    • pp.115-124
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    • 2017
  • Purpose: Researchers found that blocks of evidence-based practice (EBP) implementation lacked opportunities for EBP education. The study found that physical therapists had negative views of research as well as their roles in EBP, lacked confidence in EBP, and had limited access to web-based materials. The purpose of this study was to highlight the importance of information research technology for efficient EBP in a clinical environment. Methods: The web-based information research technologies that should be used for sustainable EBP include: the clinical practice guideline (CPG) and PubMed's My NCBI service. Journal mailing services and other academic information sources should also be used to gather information from RSS feeds. An EBP library or archive must be created. A site that provides EBP-specific information is also needed. Results: We should usually do EBP. Practitioners must learn and use information technologies that will help them improve their EBP skills. Conclusion: Facilitating EBP implementation and building an EBP system require related education as well as a practical work environment and equipment. However, the highest priority is individual efforts and trial. Information technology will complement the lack of time. It is important to use information research technology to overcome real obstacles. Lasting EBP must use a number of web-based information research technologies to overcome the practical challenges encountered in EBP implementation.

A Study on the Development of Internet Purchase Support Systems Based on Data Mining and Case-Based Reasoning (데이터마이닝과 사례기반추론 기법에 기반한 인터넷 구매지원 시스템 구축에 관한 연구)

  • 김진성
    • Journal of the Korean Operations Research and Management Science Society
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    • v.28 no.3
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    • pp.135-148
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    • 2003
  • In this paper we introduce the Internet-based purchase support systems using data mining and case-based reasoning (CBR). Internet Business activity that involves the end user is undergoing a significant revolution. The ability to track users browsing behavior has brought the vendor and end customer's closer than ever before. It is now possible for a vendor to personalize his product message for individual customers at massive scale. Most of former researchers, in this research arena, used data mining techniques to pursue the customer's future behavior and to improve the frequency of repurchase. The area of data mining can be defined as efficiently discovering association rules from large collections of data. However, the basic association rule-based data mining technique was not flexible. If there were no inference rules to track the customer's future behavior, association rule-based data mining systems may not present more information. To resolve this problem, we combined association rule-based data mining with CBR mechanism. CBR is used in reasoning for customer's preference searching and training through the cases. Data mining and CBR-based hybrid purchase support mechanism can reflect both association rule-based logical inference and case-based information reuse. A Web-log data gathered in the real-world Internet shopping mall is given to illustrate the quality of the proposed systems.