• The Journal of the Korea Contents Association
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• v.21 no.3
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• pp.590-601
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• 2021

The current study explored how robot's persuasive intent and its' physical distance affect consumers' evaluaton on the robot and the product that the robot advertises. This study administered a 2 (level of pursasion intent: low vs. high) × 2 (physical distance: normal vs. close) between-subjects factorial design experiment. The findings revealed that consumers evaluated the robot' expertise and trustworthiness more negatively and reported lower intentions to buy the produce when they perceived robot's persasive intent saliently high. Consumers were also found to show more negative attitude toward the robot and lower intentions to buy the produce when the robot approached to their personal space more closely. The theoretical and practical implications about human-robot interaction in marketing context were discussed.

• The Journal of the Korea Contents Association
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• v.22 no.4
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• pp.70-82
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• 2022

At the current stage of a semi-autonomous vehicle, there are situations in which the vehicle has to request take-over control to the driver quickly. However, current self-driving cars use only simple messages and warning sounds to notify drivers when handing over control, so they do not adequately convey considerations of individual characteristics or explanations of various emergent situations. This study investigated how visual and auditory information and the efficacy of drivers in self-driving cars can improve efficient take-over requests between the car and the driver. We found that there were significant differences in driver's cognitive load, reliability, safety, usability, and usefulness according to the combination of three visual and auditory information provided in the experiment of the take-over request situation. The results of this study are expected to help design self-driving vehicles that can communicate more safely and efficiently with drivers in urgent control transition situations.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.254-257
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• 2011

IP기반 무선 센서네트워크 기술은 센서노드를 인터넷망과 연동하여 다양한 정보를 수집/관리할 수 있음에도 불구하고 주로 제한된 환경에 설치되기 때문에 노드의 오작동이나 성능 개선이 필요한 경우 인위적인 소프트웨어 업데이트 및 업데이트된 노드의 상태를 파악하고 관리할 필요성이 있다. 소프트웨어 업데이트를 위해 필요한 코드 전파 기법은 매우 중요한 기술 중 하나로서, 본 논문에서는 6LoWPAN 프로토콜에서 제공하는 단편 패킷 전송 기법에 네트워크 코딩 기법을 적용한 새로운 업데이트 코드 전파 기법을 제안한다. 제안된 기법은 기존 단편 패킷 전송방식과 비교하여 패킷 전송의 횟수가 감소되었을 뿐만 아니라, 업데이트 코드 전파를 위한 신뢰성 보장, 전체 네트워크에서 전송에 따른 오버헤드 감소 효과를 보인다. 따라서 본 논문에서 제안한 6LoWPAN 프로토콜상에서 코드업데이트 전파 기법을 적용할 경우 속도, 에너지, 네트워크 혼잡도 측면에서 효율적인 업데이트를 수행할 수 있다. 뿐만 아니라 네트워크 코딩의 overhearing 문제점인 원본 데이터의 분실이나 데이터 미 수신시 발생하는 디코딩문제를 미리 정의된 메시지를 이용, 방지함으로써 신뢰성 있는 데이터 전송이 가능하다.

• Knowledge Management Research
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• v.23 no.4
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• pp.295-314
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• 2022

Effectiveness of corporate promotion using SNS will be meaningful from theoretical and practical perspectives. This study attempts to explore the implications of running corporate ambassador programs composed of university students, different from previous studies focused mainly on celebrity influencers. To this end, the research model was generated and the hypotheses were tested by the responses of 287 subjects who received promotional messages from university student ambassadors of a public corporation. Research findings confirmed that ambassador characteristics (intimacy, expertise) had a significant influence on corporate promotion by mediating SNS information characteristics (information provision, information playfulness, and information reliability). Furthermore, it is found that MZ generation perceived the higher intimacy, the higher information playfulness, while the older generation perceived the higher expertise, the higher information reliability. In order to generalize these research findings, further research considering more diverse demographic characteristics is necessary.

• Asia Marketing Journal
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• v.9 no.2
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• pp.1-21
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• 2007

This research investigates the role of causal inferences about the endorser's motivation - specifically, dispositional versus situational attributions - and their impact on persuasion of noncelebrity testimonial advertisements. Based on the correspondent inference theory and the relevant literature, it is posited that consumers will generate predictable patterns of attributional responses to testimonial messages, which in turn will influence ad and brand evaluations. An experiment with 335 consumer panelists, after a pilot experiment with the college student sample, has been conducted. Results suggest the greater impact of dispositional attributions than situational attributions on persuasion of noncelebrity testimonial messages and general evocations of situational attributions regardless of the levels of endorser credibility and dispositional attributions. On the basis of the findings from this study, theoretical and practical implications are discussed, as are directions for future research.

• Korean Journal of Culture and Social Issue
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• v.30 no.1
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• pp.81-100
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• 2024

This study validated and investigated the psychological properties of the Korean version of Everyday Ageism Scale to measure subtle ageism in day-to day lives. A total of 498 adults aged 60 and above participated in this study, which involved measuring the everyday ageism scale, experiences of elderly discrimination, self-perception of aging scale, depression (SCL-90R), and satisfaction with life scale. The sample was randomly divided into two groups.Tthe first group(n=198) used for exploratory factor analysis and reliability analysis, and the second group(n=300) was used for confirmatory factor analysis and validity testing. As a result, if was confirmed that K-EAS consist of 10 items and 3 dimensions (i.e., exposure to ageist messages, ageism in interpersonal interactions, and internalized ageism), consistent with the original scale. K-EAS demonstrated good internal consistency, convergent validity, discriminant validity, and incremental validity. In specific, ageism in interpersonal interactions and internalized ageism were correlated with experiences of elderly discrimination, negative self-perceptions of aging, and depression. However, ageism in interpersonal interactions and internalized ageism were negatively correlated with positive self-perceptions of aging and satisfaction with life. Also, the K-EAS provided additional explanation of depression even when excluding the effect of experiences of elderly discrimination. The result confirme that K-EAS is reliable and valid. The implication and limitations of this study, as well as suggestions for the use of K-EAS and future research, were discussed.

• Journal of Digital Contents Society
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• v.9 no.1
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• pp.125-130
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• 2008

User web service is increasing by development of internet technology. Quantity of encrypted data that transmitted through the network are increasing by development of encipherment technology. We have many problems; it is caused by technical development and service increase of user requests. It is like that, we have reliability of contents and illegality copy problem of internet contents in web application system. It is contents protection skills in web that encipherment technology, authentication and digital signature. We need message encoding and secret key for solve vulnerability of encipherment in web application system. In this paper, we propose a distributed secure system that can data confidentiality and user authentication. It prevent performance degradation from bottle neck in encipherment server, and improve service quality.

• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.562-567
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• 2007

분산 환경에서 신분 확인을 위한 생체인증기기가 이용되는 경우 그 기기가 생체인증 표준인 BioAPI를 준용하여 제대로 구현된 것인가에 대한 적합성 시험이 필요하게 된다. 이러한 적합성 시험은 분산 환경의 사용자 및 서비스 제공자에게 표준 규격을 준용한 제품이라는 신뢰성을 주게 된다. 기존에 제공되는 있는 BioAPI(Biometric Application Programming Interface) v2.0 기반의 BSP(Biometric Service Provider)는 오프라인 상에서 BioAPI기반의 제품의 준용 여부만을 평가하기 때문에 분산 환경에서 여러 사람이 동시에 준용 여부를 평가 받기 힘들며 이에 따른 동시 서비스 제공도 불가능하다. 본 논문에서는 BioAPI v2.0 기반의 제품들이 분산 환경에서 제공되는 9개 모델의 표준화된 환경으로 구분하고, 원활한 적합성 시험을 위하여 XML기반의 Test Assertion을 설계하여 생체인증 API 표준 적합성을 시험하였다. XML Test Assertion을 이용한 생체인증 적합성 시험을 위한 메시지 플로우를 밝혀 그 타당성을 입증하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.5
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• pp.1163-1172
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• 2015

In this paper, an MQTT based protocol is designed and implemented for control, management and monitoring of HVAC in a cloud platform in real time. The MQTT protocol is a two-way messaging protocol, and has the generality, flexibility, light weighted, quickness with reliability and security. In the implemented system, performance and reliability of the communication protocol is considered for data acquisition and control between the CCU and the cloud server. Control and monitoring for the cloud server is performed in real time in conjunction with CCU and the MQTT server.

• Journal of the Korea Society of Computer and Information
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• v.4 no.2
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• pp.70-79
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• 1999

In mobile database system, transactions processing schemes address in ones using a static coordinator and coordinator migration. This apply coordinator migration mechanism which perform the transaction in new database server when posed to be the transaction service handoff. That apply static coordinator mechanism which perform the transaction in database server to begin the transaction when posed to be the transaction service handoff. In this paper, a scheme-independent simulation model has been developed in order to support comparative performance studies of mobile transaction processing schemes. And this paper describes the model in detail and presents simulation results which were obtained for what it believe to be the performance evaluation of the mobile transaction processing schemes. Finally, the mobile transaction processing schemes will improve system performance by minimizing the transmission of message for processing the transactions in mobile database system.