• Journal of the Korean BIBLIA Society for library and Information Science
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• v.30 no.4
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• pp.157-173
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• 2019

Due to the fact that cognitive authority influences an individual's thoughts so that a given information is perceived as appropriate, people evaluate information based on their cognitive authority. The purpose of the present study is to examine the perception of the cognitive authority of online information sources used by college students to carry out their academic tasks, and to determine whether such perceptions affect the quality assessment of information sources, such as webpages, e-journals, and Wikipedia,. Specifically, we measured how cognitive authority, which were formed by the author, the surface, and the content of an information source influenced its accuracy, usefulness, completeness, and expertise. For this purpose, online surveys were conducted with college students, and 172 valid responses were obtained. Findings indicated that all the characteristics that formed the cognitive authority of an information source had significant impacts on its accuracy, usefulness, completeness, and expertise. The study suggests academic implications that confirm the associations between cognitive authority and credibility of information in the context of online information sources. Furthermore, the study provides practical implications that system developers or operators of information sources need to consider diverse factors that affect their cognitive authority to promote users' trust on the information that they deliver.

• Journal of Satellite, Information and Communications
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• v.4 no.2
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• pp.5-11
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• 2009

In this paper, we propose our design of adaptive resource allocation in the cognitive radio network assisted by satellite to improve the performance of Cognitive Radio user. Most of today’s telecommunication network operates in a fixed, licensed frequency band using a specific spectrum access network. However, the spectrum is not always used all the time, all the band. It causes the inefficiency in the spectrum usage. Thus, cognitive radio network is proposed to solve these spectrum inefficiency problems. The cognitive radio users (secondary users) are coexistent with primary users (PUs) who are licensed. That cognitive radio network is considered as lower priority comparing with primary user. So, the operation of the cognitive radio network is limited to interference constraints. Especially, when the number of secondary users increases, CCI among SUs will increase as well as interference to PU. That motivates our objective to improve the performance even if cognitive radio users increase. To solve this problem, we suggest an adaptive resource allocation scheme to improve the performance of cognitive radio network assisted by satellite. Through this algorithm, we can improve the cognitive radio network performance. And the simulation results confirm the effectiveness of our proposed algorithm.

• Journal of the KSME
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• v.50 no.10
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• pp.37-42
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• 2010

이 글에서는 자동차의 품질향상이 자동차 시장에 미치는 파급효과와 최근 도요타 품질문제에서 나타난 신뢰성의 하락 영향을 분석하고 예측할 수 없는 미래의 자동차 시장에서 우리나라 자동차산업 발전에 기여할 수 있는 신뢰성의 역할이 무엇인지에 대해 생각해보고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.532-534
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• 2001

영세한 국내 소프트웨어 개발 업체들의 인지도 향상과 소프트웨어 산업의 자발적인 품질 개선 노력 유도를 위해 소프트웨어 품질 인증 사업이 2001년 1월부로 가동되었다. 소프트웨어 품질 인증을 위해서는 소프트웨어 품질을 시험.평가하기 위한 여러 기술들이 필요하다. 본 논문에서는 다양한 소프트웨어 품질 시험.평가 기술들 중 시험.평가 방법 측면에서 현재까지 연구되어 적용되고 있는 현황을 중심으로 기술하고자 한다.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.293-303
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• 2018

This paper aimed to research the brand personality, brand equity, and brand value of Taobao and Jindong (JD) as well as the difference between the two brands. Chinese consumers receive the questionnaire survey in groups. A total of 321 questionnaires were distributed, of which, 162 for Taobao and 159 for JD. The findings, first, determine the brand personalities of Taobao(sincerity, sophistication, competence and excitement) and JD(competence, sophistication, and excitement). Second, find the influential relationship between brand personality and brand equity. For Taobao, the sincerity of personality has a positive impact on brand loyalty, image and perceived quality. The competence impact on brand loyalty, awareness, and image. The sophistication impact on brand image and perceived quality. Competence and sophistication of the JD personality impact on the brand equity. Excitement of JD impact on the perceived quality. Third, the brand loyalty and perceived quality of Taobao have a positive influence on the brand value; and brand loyalty, image, and perceived quality of JD have a positive influence on the brand value. In the future research, the findings of the research provide a theory basis for the brand management, and can take more consideration into the relations among other variables in the context of online shopping environment.

• Journal of Advanced Navigation Technology
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• v.17 no.4
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• pp.435-441
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• 2013

This paper proposes a neural net based-predictive connection admission control (CAC) scheme for multiclass users in wireless cognitive radio networks. We classifies cognitive users(cu) into real and non real time services, and then permit only real time services to reserve the demanded resource for spectrum handoff in guard channel for provisioning the desired QoS. Neural net is employed to predict primary user's arrival on time and demanded channels. Resource scheduling scheme is based on $C_IA$(cognitive user I complete access) shown in this paper. For keeping primary users from interference, the CAC is performed on only cognitive user not primary user. Simulation results show that our schemes can guarantee the desired QoS by cognitive real time services.

• International Commerce and Information Review
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• v.17 no.2
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• pp.253-284
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• 2015

More manufacturing companies tend to outsource their logistics functions to logistics service providers to ensure their own competitiveness than before. This paper investigates the differences between customer perceptions and expectations on three key logistics outsourcing decisions. For testing logistics service qualities, a research model which employs a SERVQUAL model was developed and a survey targeting manufacturing companies has been conducted. The average difference of logistics service level between customer perceptions and expectations was derived as 8% from a result of gap analyses. The findings here reveal the level of service quality of Korean logistics service providers as well as suggest core capabilities for them in order for gaining a competitive edge on the competitors and improving their performances.

• Journal of Digital Convergence
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• v.11 no.5
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• pp.385-394
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• 2013

Recently, as the healthcare market is globalized, the importance of the information on the Internet has been recognized. In this study, the analysis by research model with hypothesis that benefit sought factors of health tourism have a positive effect on behavioral intention of destination selection through tourism brand equity by internet information was carried out. As a result of analysis, benefit sought factors like as health and beauty did not have a positive effect on brand cognition and perceived quality but benefit sought factors like as service and nature had a positive effect on brand cognition and perceived quality. However, benefit sought like as experience did not have a positive effect on brand cognition and perceived quality. And brand equity like as brand cognition and perceived quality had a positive effect on behavioral intention. Thus, according to the results of these hypotheses, policies that foster health tourism in Jeju region will be followed based on product development that considering the importance of the existing service and cognition.

• Korean Journal of Cognitive Science
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• v.10 no.3
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• pp.77-83
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• 1999

With a surge of interest in OCR in 1990s a large number of handwriting or h handprinting databases have been built one after another around the world. One problem that researches encounter today is that all the databases differ in various ways including the script qualities. This paper proposes a method for measuring handwriting qualities that can be used for comparison of databases and objective test for character recognizers. The key idea i involved is classifying character samples into a number of groups each characterizing a set of qualities. In order to evaluate the proposed method we carried out experiments on KU-1 database. The result we achieve is meaningful and the method is helpful for the target tasks.

• Culinary science and hospitality research
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• v.15 no.3
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• pp.356-372
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• 2009

The purpose of this study is to study academic tendency in the researches on the service quality of Korean restaurants by analyzing the studies related to the service quality of Korean restaurants. As a result of this study, the studies related to the service quality of Korean restaurants, included in 7 academic journals selected, are totally 26 articles. Among them, there are 14 researches targeting medium-large size Korean restaurants with more than 100 seats. In the methodological aspect, the scales, which were used most frequently in measuring the service quality of Korean restaurants, were indicated to be SERVQUAL in Parasuraman et al.(1988), DINESERV in Stevens et al.(1995) and Brady & Cronin(2001)'s scale. Also, as a result of examining the tendency of researches related to the service quality in Korean restaurants in the contextual aspect, the interaction quality between employees and customers out of customers' perceived service quality was surveyed to have greater influence upon customers' behavioral reaction than the physical quality or technical quality. Consequently, in order to conduct an institutional research through examining the service quality in Korean restaurants, understanding the customers' perceived service quality needs to be implemented preferentially with a systematically verified scale. Moreover, such researches on the service quality of Korean restaurants appear to focus on specific subjects. Thus, in order to escape from this tendency, it is necessary to explore creative research subjects and design diversely and scientifically analytical methods.