• Parasites, Hosts and Diseases
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• 제55권2호
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• pp.175-183
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• 2017

Codon usage bias (CUB) is a unique property of genomes and has contributed to the better understanding of the molecular features and the evolution processes of particular gene. In this study, genetic indices associated with CUB, including relative synonymous codon usage and effective numbers of codons, as well as the nucleotide composition, were investigated in the Clonorchis sinensis tyrosinase genes and their platyhelminth orthologs, which play an important role in the eggshell formation. The relative synonymous codon usage patterns substantially differed among tyrosinase genes examined. In a neutrality analysis, the correlation between $GC_{12}$ and $GC_3$ was statistically significant, and the regression line had a relatively gradual slope (0.218). NC-plot, i.e., $GC_3$ vs effective number of codons (ENC), showed that most of the tyrosinase genes were below the expected curve. The codon adaptation index (CAI) values of the platyhelminth tyrosinases had a narrow distribution between 0.685/0.714 and 0.797/0.837, and were negatively correlated with their ENC. Taken together, these results suggested that CUB in the tyrosinase genes seemed to be basically governed by selection pressures rather than mutational bias, although the latter factor provided an additional force in shaping CUB of the C. sinensis and Opisthorchis viverrini genes. It was also apparent that the equilibrium point between selection pressure and mutational bias is much more inclined to selection pressure in highly expressed C. sinensis genes, than in poorly expressed genes.

• 한국정보시스템학회지:정보시스템연구
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• 제24권3호
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• pp.95-114
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• 2015

Purpose: This study was tried to investigate a structural relationship among key impacting factors and usage in SNS of government institutions. It was designed to research the processing property of SNS, the emotional property of SNS, and the service property of SNS for the SNS usage. Based on the research framework from the relationships among intrinsic SNS characteristics, social psychological characteristics, and the attitude of government institutions' SNS, the empirical research model and the hypotheses were established. Design/methodology/approach: Data for empirical study were collected from 453 of total distributed 500 by the structured questionnaire survey with SNS users of government institutions. The analysis was performed from effective 432 data, and the sample was mainly consisted of men, the thirty-old, and salesmen. Findings: The results showed that the emotional and service properties in intrinsic characteristics of SNS have a significantly positive effect to the value perception and the security variable in social psychological characteristics has a significant positive effects to the trust. Finally, the value perception has positive effects on both trust and use intention of government institutions' SNS. Meaning of these results is that intrinsic SNS characteristics, social psychological characteristics, and the attitude of government institutions' SNS have a significant effect on SNS usage.

• 한국유통학회지:유통연구
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• 제2권2호
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• pp.107-134
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• 1997

The purpose of this study was to identify perception level of QR and the usage level of QR technologes and to examine the relationships between the firm characteristics and the usage level of QR technologes and QR adoption in domestic fashon industry. Using the usage levels of QR technologes and QR adoption as the dependent variables, the selected firm characteristics, as independent variables, were firm size, perception level of QR benefits, and product characteristics. The findings from the empirical analysis of this study can be summarized as follows : Firm size and perception level of QR benefits were significantly associated with the usage level of QR technologies and adoption. Product characteristics were partly associated with QR adoption. The four elements were partly associated with QR adoption. Most of the QR adopters were using the QR technologies, and will tend to have four elements. From the results of this study, the researcher expects the information from this study to contributes to the body of knowlege about the identification, adoption and utilization of component technologies for QR management systems and draws several counterproposal as follows : The advancement of domestic fashion industry is possible through the systematic adoption of QR by the collaboration of the government & the industry. Most nonadopter had financial problems as a constraint to QR adoption. Financial supports are needed from trade associations and government. The fashion industry may promote the type of smart QR. The type of smart QR means usage level of QR technologies which reflect the firm characteristics and the actual industry state in domestic fashion industry. The fashion industry may establish information technology network (i. e., EDI, POS, EOS) between relative industry such as fiber, apparel manufacturers, retailers. The related industry should make a partnership.

• 디지털산업정보학회논문지
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• 제6권4호
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• pp.279-295
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• 2010

Technology development has reshaped not only the business environment but also financial service. The purpose of this study is to investigate the factors affecting customer's attitude and usage of Internet banking. Based on prior studies, this study identifies usefulness, ease of use, innovativeness, social influence, quality, cost as affecting factors of customer's attitude and usage of Internet banking. This study intends to do a comparison analysis the relationship between customer's attitude and usage of Internet banking by classifying Internet banking service into inquiry, transfer, and other service. Result shows that usefulness, quality, and cost are significantly related to the customer's attitude toward Internet banking service, but ease of use, innovativeness, and social influence are not. Even though customer's attitude was found to be significantly related to the use of Internet banking, the degree of it was different by service types inquiry, transfer, and other service in a row. It implicates that usage of Internet banking still centered on inquiry service.

• 디지털산업정보학회논문지
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• 제12권4호
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• pp.145-161
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• 2016

The purpose of this study is to investigate influences of usage motivation of SNS and interpersonal relationship orientation on Mobile Social Network Service(MSNS) addition proneness. For this purpose, questionnaires including MSNS addition Proneness scale, usage motivation of SNS scale and interpersonal relationship orientation scale were administered to 250 college students in Seoul. Regression analysis revealed that usage motivation of SNS showed influences of interpersonal relationship orientation. The Usage motivation of SNS showed influences of MSNS addiction proneness, interpersonal relationship orientation showed partial influence MSNS addiction proneness. The result of this study implicated that level of MSNS addiction tendencies needs to be considered for counseling with used of SNS motives. This study findings would contribute in development of preventive interventions for SNS addiction and improvement program for interpersonal competence in college students. Futhermore, exploration of various ways to satisfy motivation of interpersonal relation would be helpful to reduce SNS addiction tendencies. Finally, based on the result, implications of finding, limitation and suggestions for future research were discussed.

• 대한안전경영과학회지
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• 제18권2호
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• pp.37-46
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• 2016

Due to increased demand for remodeling and repair in construction market in recent year, the usage of horse scaffold is increasing in the indoor finish works. Injuries related horse scaffold are mainly caused by poor installation or of careless handling of scaffold. Approximately 300 workers are injuried at construction site every year, it is accounting for about 1.5% of the total construction sector and has increased on a year-to-year trends. But the main contents between national standards and speccifications related to the manufacture and usage of horse scaffolds are mutually inconsistent, In particular, the rules on occupational safety and health standards are the basis for the prevention of industrial injuries, there is no explicit application being made to the horse scaffold commonly used on construction sites. The purpose of this study was to analye the manufacture and usage situations in order to reduce construction injuries that occur at the horse scaffolds. It will be utilized the results of the analysis as the basis data for unifying the major domestic standards and specifications associated with the manufacture and usage of horse scaffold.

• 한국자동차공학회논문집
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• 제17권3호
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• pp.127-141
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• 2009

While the ever-increasing complexity of automotive software systems can be effectively managed through the adoption of a reliable real-time operating system (RTOS), it may incur additional resource usage to a resultant system. Due to the mass production nature of the automotive industry, reducing physical resources used by automotive software is of the utmost importance for cost reduction. OSEK OS is an automotive real-time kernel standard specifically defined to address this issue. Thus, it is very important to develop and exploit kernel mechanisms such that they can achieve minimal resource usage in the OSEK OS implementation. In this paper, we analyze the task subsystem, resource subsystem, application mode and conformance classes of OSEK OS as well as the OSEK Implementation Language (OIL). Based on our analysis, we in turn devise and implement kernel mechanisms to minimize the dynamic memory usage of the OSEK OS implementation. Finally, we show that our mechanisms effectively reduce the memory usage of OSEK OS and applications.

• 디지털융복합연구
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• 제14권2호
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• pp.389-396
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• 2016

본 연구는 IPTV 가입여부, DMB 시청여부, 지상파 방송 콘텐츠 제공여부, 모바일 동영상 서비스의 6가지 속성별 만족도(콘텐츠 다양성, 화질, 재생품질, 부가서비스, 이용편리성, 데이터소모량)가 모바일 동영상 서비스 사용 다양성과 사용정도에 각각 어떤 영향을 미치는지를 살펴보았다. 분석 결과 IPTV 가입여부, DMB 시청여부, 지상파 방송 콘텐츠 제공여부는 모바일 동영상 서비스 사용다양성에 유의미한 영향을 미치는 것으로 나타났다. 또한 지상파 방송 콘텐츠 제공여부, 재생품질 만족도는 모바일 동영상 서비스 사용정도에 유의미한 영향을 미치는 것으로 나타났다. 그러므로 모바일 동영상 서비스에서 지상파 방송 콘텐츠 제공여부가 핵심요소임을 확인하였다. 이러한 결과를 바탕으로 시사점과 한계점을 제시하였다.

• 한국컴퓨터정보학회논문지
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• 제16권7호
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• pp.165-172
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• 2011

본 연구는 향후 국내에서 WiBro 서비스를 활성화시키기 위한 방안을 모색하는데 목적을 두고 있다. 이러한 연구목적을 달성하기 위하여, 본 연구에서는 국내의 무선인터넷 사용자들을 대상으로 설문조사를 실시함으로써, 무선인터넷 이용 특성(이용수준, 이용장소, 선호요금체계)과 WiBro 서비스 활성화를 위한 요인(기술인프라, 정부정책, 콘텐츠, 단말기, 서비스 사업자)에 대한 인식도 등을 파악하였다. 또한, 설문응답자의 무선인터넷 이용 특성에 따라 WiBro 서비스 활성화를 위한 요인에 대한 인식도가 차이가 있는가를 분석함으로써, 향후 관련 실증연구들에서 활용될 수 있는 연구명제를 제시하였다.

• 한국정보시스템학회지:정보시스템연구
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• 제25권1호
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• pp.201-223
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• 2016

Purpose As social network games (SNG) enjoy rapid growth in the market and become a major sector of the gaming industry, it is of great interest to examine the how users continuously use SNG. In SNG, the users' social interaction is the most prominent advantage of the social network, as well as the entertainment afforded by the game. This study explores the relationship between altruism, which is considered the most prominent characteristic of SNS, and the continuance usage intention, as well as the moderating role of social capital. Based on social capital theory and organizational citizenship behavior, this research model considers social bonding and bridging that are divided by social capital. Design/methodology/approach An AMOS analysis based on survey data from 223 SNG users indicated that SNG with greater altruism enhance social capital (social bonding, social bridging), which is related to the user's satisfaction and the continuance intention of SNG. Findings Social bonding is positively related to the user's satisfaction with SNG. In other words, social bridging positively affects the continuous usage intention of SNG. These findings help managers in developing and implementing altruistic relationships and social capital for continuous usage of SNG.