• ETRI Journal
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• 제37권5호
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• pp.1001-1011
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• 2015

Since just-in-time (JIT) has considerable overhead to detect hot spots and compile them at runtime, using sophisticated optimization techniques for embedded devices means that any resulting performance improvements will be limited. In this paper, we introduce a novel static Dalvik bytecode optimization framework, as a complementary compilation of the Dalvik virtual machine, to improve the performance of Android applications. Our system generates optimized Dalvik bytecodes by using Low Level Virtual Machine (LLVM). A major obstacle in using LLVM for optimizing Dalvik bytecodes is determining how to handle the high-level language features of the Dalvik bytecode in LLVM IR and how to optimize LLVM IR conforming to the language information of the Dalvik bytecode. To this end, we annotate the high-level language features of Dalvik bytecode to LLVM IR and successfully optimize Dalvik bytecodes through instruction selection processes. Our experimental results show that our system with JIT improves the performance of Android applications by up to 6.08 times, and surpasses JIT by up to 4.34 times.

• Journal of Korea Society of Digital Industry and Information Management
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• 제9권4호
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• pp.201-212
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• 2013

The purpose of this study are to show a new possibility of identity design to be used as tools of users identity expression, designing digital contents by studying on the methods to express users identities successfully in the digital contents design, and to present the possibility to expand the area of identity design. Digital contents are a communication media in it self, but this study tried to consider the digital contents as a tool of users communication or expression. The identity expression, which are not only makes communications efficient but also lets products and companies acknowledged by users, is one of the most indispensable factors in products competitive power in both the present and the future. However, no define methods of identity expression are settled as well as recognized by users properly and accurately yet, so that this study focuses on that point. Therefore, This study is advanced in the direction of establishing the concept of digital identity for an expansion of the media toward the identity expression in design as well as making researchers in successful identity expression ways by means of actual design, more than a graphic image making that simply decorates a digital contents. The point of this study is to show a new concept of identity design that expresses users identities so as to suggest another possibility of identity design.

• The Journal of the Korea Contents Association
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• 제16권6호
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• pp.394-403
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• 2016

This research aimed at comprehending influence among education participants' characteristics (followership, sense of community, conscientiousness), organizational effectiveness, and investigating mediation role of communication. The results are as follows: First, followership and sense of community play an important role for communication. But conscientiousness did not affect communication. Second, communication has directly affected job satisfaction and organizational commitment. Third, the relation between education program characteristics and organizational effectiveness were mediated by communication. The findings of this study suggest the educational program is designed and developed based on employee's attitude of mind.

• International Journal of Contents
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• 제6권1호
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• pp.59-64
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• 2010

Recently, biological researches are required to deal with a large scale of data. While scientists used classical experimental approaches for researches in the past, it is possible to get more sophisticated observations easily with the convergence of information technologies and biology. The study on diseases is one of the most important issues of the life science. Conventional services and databases provide users with information such as classification of diseases, symptoms, and medical treatments through the Web. However, it is hard to connect or develop them for other new services because they have independent and different criteria. It may be a factor that interferes the development of biology. In this paper, we propose integrated data structures for the disease databases. We also design and implement a novel directory system for diseases as an infrastructure for developing the new diseases services.

• Journal of Digital Contents Society
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• 제10권3호
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• pp.469-477
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• 2009

This study is about Augmentative and Alternative Communication as handicapped people actively pursue their life. Especially, although there are many ways and devices for communicating the same as a normal person, descriptive supplementation and sustaining studies are needed for perfect communication as a normal person. The purpose of the paper is to help handicapped people who have hardships about communication. This study develops the function of Smart Workflow AAC(Augmentative and Alternative Communication) and IR sensor_based context aware function that can offer services convenient to classified handicapped people for helping them to communicate effectively. This system from an experimental basis has improved efficiency to communicate more harmoniously within individual handicapped situations to schedule management and communication of handicapped people.

• International Journal of Contents
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• 제15권2호
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• pp.53-58
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• 2019

The aim of this paper is to discuss how designers lead and direct 'technology-driven society' using their creative communication skill. To this end, it is required for communication designers to take conscious steps to recognize the future direction of their profession. Despite the advancement in technology, there is a human being at the center of all design activities. From a certain point of view, contemporary communication design takes an open-ended exploration of the subject matter, rather than a finished output. The notion of creative leadership may potentially expand more in terms of improving the methodology of today's visual culture. The paper will examine creative leadership that could be proposed by the challenge of discourse upon the upcoming industrial revolution. Today, communication designers are confronted by new leadership opportunities and challenges. Some leading designers seem to focus on brand new media technologies to prepare the 4th industrial revolutions. However, communication design cannot be discussed in the medium but can be understood as a process. Top-down and bottom-up process is always a concerned about the relationship since the focus of leadership has changed. In the top-down process, the leadership has existed between 'designer and client' because designers have played their role as a problem solver. On the other hand, there is a different model of leadership between 'design and technology' based on bottom-up process, which stem from the design authorship. In this regard, the new definition of creative leadership in the $4^{th}$ industrial revolution proposes a designer as a problem-finder based on the relationship between the 'designer and the public'.

• International Journal of Internet, Broadcasting and Communication
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• 제12권3호
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• pp.206-212
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• 2020

The purpose of this study is to analyze the structural relationship among information attitude, brand attitude, usage satisfaction, brand image and brand loyalty of YouTube sports Contents. The survey subjects to achieve the purpose of this study were selected the 490 YouTube sports contents Viewer in the metropolitan area. Data processing was done with SPSS 23 for frequency analysis, Cronbach's α analysis. Also, AMOS 21 was used for confirmatory factor analysis and structural equation model analysis. The results of the analysis are as follows: First, it is more effective to increase the attitude toward the brand itself rather than information attitude to use satisfaction Second, both information attitude and brand attitude were found to have a positive effect on enhancing brand image. In relation to attitude and image, it was possible to achieve research accumulation for YouTube users. Third, it was found that both the use satisfaction and the brand image presented in the previous study had a positive effect on brand loyalty.

• Proceedings of the Korea Contents Association Conference
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• 한국콘텐츠학회 2011년도 춘계 종합학술대회 논문집
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• pp.91-92
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• 2011

최근 유비쿼터스 시대의 도래와 함께 모바일 기기를 이용한 서비스 수요가 급격히 증가함에 따라 대량의 콘텐츠와 서비스를 효율적으로 제공하기 위한 연구가 진행되고 있다. 이를 위해 사용자의 상황 정보를 이용하여 개인화 서비스를 제공하기 위한 다양한 모델들이 제시되고 있다. 하지만 이러한 모델들은 상황에 따른 사용자의 선호도 혹은 컨텍스트를 자체적으로 수집/분석하여 추천한다는 점에서 신뢰도가 높은 콘텐츠를 추천하지 못하거나 이를 검증할 수 없다는 문제점이 있다. 본 논문에서는 시공간 복합 상황 정보와 사용자의 컨텍스트를 활용한 분석과 함께 콘텐츠와 서비스를 제공하는 외부 CP(Contents Provider)가 Open API로 제공하는 신뢰도에 따라 소비 가치가 높은 최적의 콘텐츠를 제공할 수 있는 추천 시스템을 제안한다.

• International Journal of Contents
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• 제5권2호
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• pp.38-42
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• 2009

The purpose of this study is to discuss the mythic qualities of television culture. The basic assumption for the study is that to enrich our understanding of television culture in terms of its mythic qualities will be helpful to those who are interested in the production and the studies of television contents in developing their creative ideas. The study discusses the theoretical conceptions of myth and ritual and their applicability to the study of television culture from the multi-disciplinary perspective. So, it deals with significant theoretical works by a number of great contemporary social or cultural thinkers including Carey, Cassirer, Durkheim, van Gennep, Turner, and Eliade. After all, the result of the study identifies three key features of mythic qualities of television culture including 'commonsensicalness,' 'emotionalness,' and 'mediatorialness.'

• The Journal of the Institute of Internet, Broadcasting and Communication
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• 제9권6호
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• pp.169-173
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• 2009

We analyzed in this study on aesthetic areas of Mobile Edu-games Contents developers and users respectively in Mobile Platform. As a result, it indicates that through the aesthetics of Edu-games and the effectiveness of animation layout, women developers and users take more interest in storytelling and animation layout than men developers and users. We can estimate that Edu-games Contents in portable mobile platform is popular as it often contains easy learning materials and fun activities can enhance effective learning.