• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권6호
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• pp.2463-2482
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• 2016

Cloud services are often provisioned to their customers using user-friendly web browsers with flexible and rich plug-in environments. Delay is one of the fundamental performance metrics of these web-based services. Commonly-used network measurement tools usually only measure network delay and it may be difficult to infer the web-delay performance using only network layer measurement approaches. In this paper, we propose to evaluate the application layer delay in a browser-based network measurement platform using engineered scripts. We conducted a delay measurement study using instrumented scripts in the proposed browser-based measurement platform. Our investigation included a comparison study of three browser-scripting delay measurement methods, including Java applet, JSP and Flash ActionScript. We developed a browser-based delay measurement testbed over the Internet so that different delay measurement tools could be evaluated in the same real network environment including typical Internet paths and the Baidu cloud. We also decomposed the components of the end-to-end delay process of the above measurements to reveal the difference and relationship between the network-layer delay and the application-layer delay. Our measurement results characterize the stochastic properties of the application-layer delay over real Internet paths, and how these properties vary from the underlying network layer delay. This browser-scripting measurement approach can be easily deployed on different cloud service platforms to inspect their application-layer delay performance between end clients and the cloud platforms. Our measurement results may provide insights into designing new cloud services with enhanced quality-of-experience perceived by cloud users.

• 컴퓨터교육학회논문지
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• 제5권4호
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• pp.91-98
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• 2002

7차 교육과정이후 ICT는 실업계 고교의 수업에서 교육효과 제고를 위한 중요한 도구로 등장하였다. 이러한 맥락에서 본 연구는 공업계 고등학교 학생들의 수업 만족도 및 참여도를 높일 수 있는 방법을 모색하고자 전자과 실습교육을 위한 웹 컨텐츠를 설계, 개발, 수업에 적용하여 어떤 요인들이 학습자의 만족에 영향을 미치는지를 확인해 보고자 하였다. 그 결과, 학습자의 학습 만족도에는 웹 컨텐츠의 용이성, 유용성, 재미 등의 요소가 직접적인 영향을 미침을 확인할 수 있었고, 그 이외의 웹 컨텐츠의 디자인, 이미지, 질, 학습자의 태도, 자기 효능감 등의 요 인들이 간접적인 영향을 미침을 확인할 수 있었다. 본 연구 결과는 실업계 고교 수업에서 사용하고자 하는 웹 컨텐츠 설계에 유용한 지침을 제공해 줄 수 있을 것으로 판단된다.

• ETRI Journal
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• 제31권3호
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• pp.304-314
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• 2009

Component-based software reuse has been generally regarded as a promising approach to improving software productivity and quality within software development. However, progress in component-based software reuse has been slower than expected. Much of the software reuse literature points to the lack of software components that can maximize users' benefits as the most important source of the slow progress. Considering that the underlying processes behind component-based software reuse are strikingly similar to commercial software marketing, this paper attempts to identify the aspects of software components that consumers value and to establish relationships between the identified aspects and consumer behavior in the software component market. More specifically, this paper focuses on the perceived subjective features of software components. This study was conducted in a web-based artificial market environment called "SofTrade."

• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 1999년도 제16회 동계학술발표회 논문집
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• pp.348-371
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• 1999

The tremendous growth of the Internet, particularly World Wide Web, has bought significant changes in the economics of marketing channels and has led to a redefinition of industry value chain. While electronic commerce has become as an important issue with the growth of the Internet, there are insufficient empirical research efforts concerning its status in Korea. The study findings suggest that contextual problems need to be solved before electronic commerce provides real benefits for consumers and businesses. The suggestions and strategies are provided at both a firm level and a consumer level. The objective of this research investigates TQM's the key quality factors and Customer's Using Satisfaction of Internet shopping mall in Korea. In addition, we tried U find out what factors discourage consumers from using electronic purchasing methods, as well as how perceived quality factors and customer satisfaction when consumers are exposed to the purchase process on the Internet shopping mall business.

• 무역상무연구
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• 제41권
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• pp.205-234
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• 2009

The trade portal site is one of the innovative skills which makes it possible for trade companies to manage international trade activities more efficiently by using the newest information technology. Especially, trade portal site can be considerable help to small and medium-sized enterprises which have much difficulties in finding overseas buyers due to the lack of international marketing capabilities. This study attempts to present a comprehensive model about the determinants of e-Trust in domestic trade portal site and to suggest practical strategies for e-Trade. Therefore, a theoretical framework was presented by the literature review, and a empirical study was carried out through a questionnaire survey to those who have had experiences of visiting trade portal site. The empirical analysis had the following results. First, it reveals that reputation, web-site quality, transaction efficiency of the trade portal site have influence upon e-Trust dimension. On the other hand, perceived risk did not have significant relationship with e-Trust. Second, e-Trust had significant impact on willingness to depend on the trade portal site. And also, e-Trust had positive influence on performance of using which is measured by sales increase, information sharing, and synergy effect.

• 품질경영학회지
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• 제29권2호
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• pp.54-75
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• 2001

The tremendous growth of the Internet, particularly World Wide Web, has resulted in significant changes in commerce environments. Internet has brought significant changes in the economics of marketing channels and has led to a redefinition of industry value chain. Electronic Commerce(EC) has become so important that countries and firms unprepared for this new trend would lose competitive advantages in the coming century of Digital Economy. Despite its importance, current EC markets in Korea are immature and there still exist several barriers to EC development thus excluding business to consumer EC markets. As interest in quality management and its effect on competitive performance has grown, there has been a corresponding proliferation of research. However, the majority of the research on quality management has not evolved in a comprehensive and rigorous fashion, particularly with regard to reliability and validity issues. The purpose of this paper investigates on Vitalization of the Activities of on-line shopping mall under of TQM system in Korea. That would make it possible to remove elements of insecurity and doubt currently felt by many users of on-line shopping mall(internet detail or cyber mall) business. In addition, we tried to find out what factors discourage consumers from using electronic purchasing methods, as well as how perceived quality factors and customer satisfaction when consumers are exposed to the purchase process on the on-line shopping mall business.

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.93-103
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• 2022

The main purpose of this study was to gauge the patient satisfaction index and subsequently discuss the Importance-Performance (IP) matrix analysis of the inpatient services in the context of the private hospital setting. The Malaysian Customer Satisfaction Index Model was employed as the theoretical framework for the above purposes. This study involving 242 patients in Malaysian's private healthcare sector used a Web-based survey as the main method of data collection. Partial least square structural equation modeling (PLS-SEM) was utilized for data analysis. Using Fornell et al. (1996)'s formula, the resulting patient satisfaction index was slightly lower than the "very satisfied" category, the target level required for positioning as one of the world's premier medical tourism players. The IP matrix showed that medical quality is the main competitive advantage of the private hospitals that can propel their growth in the global healthcare marketplace. The results also indicate that outcome quality, patient rights, and privacy, and service quality are the three quality domains that need to be prioritized for further improvement. On the other hand, the servicescape quality domain needs to be strategized as the unique selling proposition as the performance of the private hospitals in this regard is already extremely good.

• 한국항만경제학회지
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• 제27권3호
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• pp.91-112
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• 2011

전자상거래 시장의 급격한 성장과 유통채널 및 소비형태의 변화에 힘입어 국내 택배시장은 지속적으로 성장해왔다. 이러한 택배시장의 급속한 성장과 변화에 택배기업들은 물류 정보기술에 대한 중요성을 인식하고 있다. 따라서 본 연구는 택배기업의 물류정보기술과 정보시스템 품질이 택배 이용자에게 어떻게 인식되고 있으며 택배서비스 이용성과 만족에 어떠한 영향을 미치는지 연구하였다. 이를 위해 기존 문헌의 조사를 기초로 하여 물류정보시스템 품질과 이용자만족에 대하여 타당하고 신뢰할만한 측정 도구를 개발하였고, 설문을 통해 실증연구 하였다. 연구결과 6개의 물류정보시스템 품질 요인이 도출되었고, 도출된 품질 요인들 중 경제성 요인을 제외한 SMS정보성, 물품추적 웹사이트 정보성, 안정성, 신속성과 정확성이 택배서비스의 이용자만족에 긍정적인 영향을 미치는 것으로 검증되었다. 이러한 결과의 이론적 및 실무적 시사점도 논의하였다.

• Journal of Computing Science and Engineering
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• 제7권3호
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• pp.168-176
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• 2013

Long-term evolution (LTE) is emerging as a major candidate for 4G cellular networks to satisfy the increasing demands for mobile broadband services, particularly multimedia delivery. Multiple-input multiple-output (MIMO) technology combined with orthogonal frequency division multiple access and more efficient modulation/coding schemes (MCS) are key physical layer technologies in LTE networks. However, in order to fully utilize the benefits of the advances in physical layer technologies, the MIMO configuration and MCS need to be dynamically adjusted to derive the promised gains of 4G at the application level. This paper provides a performance evaluation of video traffic with variations in the physical layer transmission parameters to suit the varying channel conditions. A quantitative analysis is provided using the perceived video quality as a video quality measure (evaluated using no-reference blocking and blurring metrics), as well as transmission delay. Experiments are performed to measure the performance with changes in modulation and code rates in poor and good channel conditions. We discuss how an adaptive scheme can optimize the performance over a varying channel.

• 지역사회간호학회지
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• 제28권4호
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• pp.513-523
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• 2017

Purpose: We evaluated the psychometric properties of a questionnaire on the acceptance of the quality improvement information system (QIIS) among long-term care workers (mostly nurses). Methods: The questionnaire composes of 21 preliminary questions with 5 domains based on the Technology Acceptance Model and related literature reviews. We developed a prototype web-based comprehensive resident assessment system, and collected data from 126 subjects at 75 long-term care facilities and hospitals, who used the system and responded to the questionnaire. A priori factor structure was developed using an exploratory factor analysis and validated by a confirmatory factor analysis; its reliability was also evaluated. Results: A total of 16 items were yielded, and 5 factors were extracted from the explanatory factor analysis: Usage Intention, Perceived Usefulness, Perceived Ease of Use, Social Influence, and Innovative Characteristics. The five-factor structure model had a good fit (Tucker-Lewis index [TLI]=.976; comparative fit index [CFI]=.969; standardized root mean squared residual [SRMR]=.052; root mean square error of approximation [RMSEA]=.048), and the items were internally consistent(Cronbach's ${\alpha}=.91$). Conclusion: The questionnaire was valid and reliable to measure the technology acceptance of QIIS among long-term care workers, using the prototype.