• 한국컴퓨터정보학회논문지
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• 제23권11호
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• pp.59-66
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• 2018

Data Distribution Service(DDS) provides the communications service programmers need to distribute time-critical data between embedded and/or enterprise devices or nodes. In this paper, I propose efficient methods for transmitting and receiving messages of various characteristics in real-time using DDS middleware. For high-frequency characteristic data, I describe several DDS packet types and various default and extended DDS QoS policies. In particular, the batching method is probably the best solution when considering several performance aspects. For large-capacity characteristic data. I will show a method using extended DDS QoS policies, a segmentation and reassembly method, and transmitting and receiving a large-capacity data with low priority method considering network conditions. Finally, I simulate and compare the result of performance for each methods. This results will help determine efficient methods for transmitting and receiving messages of various characteristics using DDS middleware.

• 유통과학연구
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• 제13권8호
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• pp.91-96
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• 2015

Purpose - This study reviews the delivery of child welfare service quality and examines how the dimensions of the variables of customer satisfaction impact the results from a service distribution perspective. This study differs from existing research since it proposes that a recognized level of child welfare service quality is necessary to achieve customer satisfaction from the perspective of service distribution. Research design, data, and methodology - This study explores child welfare service quality factors that affect customer satisfaction. The study examines and analyzes demographic variables, service quality dimensions, and the causal relationships between child welfare service quality and customer satisfaction. Data from 300 child welfare cases were collected from organizations in Korea in the areas of Busan and Gyeongsangnamdo. The methods of analysis are as follow. First, using descriptive analysis frequency, the percentages were evaluated to assess the demographic variables. Second, Cronbach's α was used to test reliability and to evaluate the internal consistency of the measuring of items. Third, multiple regression analysis was conducted to find out how much the independent variable can affect customer satisfaction. Results - Five factors of child welfare service quality were identified in three categories: process quality (assurance, empathy), results quality (reliability, caring), and physical environment quality (tangibles). There were significant differences among the effects of the child welfare service quality factors on customer satisfaction. A multiple regression analysis was done with process quality (assurance, empathy), results quality (reliability, caring) and physical environment quality (tangibles) to test the hypothesis: assurance (t=2.434, p<0.05), empathy (t=3.677, p<0.001), reliability (t=3.271, p<0.05), caring (t=4.380, p<0.000), and tangibles (t=3.654, p<0.01) had a positive influence on child welfare service quality from a service distribution perspective. Therefore, hypotheses 1, 2, 3, 4, and 5 were supported. In addition, multiple regression analysis on the effects of the variables showed that caring (β=0.273), empathy (β=0.246), tangibles (β=0.265), reliability (β=0.152), and assurance (β=0.131) all had a positive and strong influence on child welfare service quality from a service distribution perspective. Therefore, all child welfare service quality categories (process, results and physical environment quality) were positively statistically significant. Conclusion - In this study, the main findings can be summarized as follows. First, the quality of service of child welfare consists of three dimensions of quality: process quality, results quality, and physical environment quality. The results of the multiple regression analysis also showed that caring and reliability were confirmed as more meaningful variables by the increasing loading factors. Second, the family members involved in child welfare proposed caring as the most important variable among the dimensions of service quality. Third, the results of the hypothesis testing using regression showed that all child welfare service quality factors had a positive impact on customer satisfaction. The results of the study could provide useful information to help increase the effectiveness of delivery strategies for child welfare service quality from a service distribution perspective.

• 유통과학연구
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• 제11권5호
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• pp.5-15
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• 2013

Purpose - The purpose of this study is to investigate the impact of the service quality of a university-based convenience store on consumer satisfaction, service value, and customer loyalty. Research design, data, and methodology - The questionnaire was developed by using the modified and supplementary questions based on the KD-SQS model. We used the SPSS/PC 18.0 and AMOS 18.0 statistical packages to analyze the results. For validating the research hypothesis and the structural relationship of the research model, path analysis was used. Results - The overall results of this study are as follows. We found that benefits, promotion, and convenience had a significant impact on two variables: customer satisfaction and service value. Conclusions - The basic benefits, promotions, and convenient facilities in the university-based convenience store have already received favorable reviews. Therefore, for improving customer satisfaction, it is important to improve the reliability of service, quality of human interaction, and customer service.

• 유통과학연구
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• 제19권12호
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• pp.57-69
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• 2021

Purpose: This study aims to measure whether the business performance of Padang restaurants in North Jakarta is primarily affected by service distribution strategy and other factors, specifically the local-based organizational culture and entrepreneurial orientation. Research design, data and methodology: This quantitative research has used Structural Model-Partial Least Square (PLS-SEM) with SMART PLS 3.0 as the analytical tool. The study's sample focus is the owner or person in charge of the Padang restaurant business in North Jakarta. Data has been collected using a questionnaire instrument with a Likert scale scale ('1-strongly disagree' to '5-strongly agree'). A total of 86 samples with a random technique were obtained from three areas in North Jakarta: Kelapa Gading, Pademangan, and Penjaringan. Results: Interestingly, this research finds that service distribution strategy does not affect business performance, either directly or indirectly. Business performance in this study is affected by entrepreneurial orientation. In additional results, the local organizational culture significantly affects the entrepreneurial orientation, but does not affect the business performance in terms of management process. Conclusions: This study provides practical implications for restaurant businesses regarding the use of local cultural concepts to consider strategies for survival in today's challenging times while continuing operations during limitations.

• 유통과학연구
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• 제19권5호
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• pp.35-48
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• 2021

Purpose: This research aims to analyze the influence of relational penetration capability on salesperson performance and the influence of customer orientation, customer knowledge accessibility, and salesperson-customer relationship quality on the relational penetration capability of the insurance service industry in Central Java. Research design, data, and methodology: This explanatory research involved 211 respondents. Path analysis was used to analyze the primary data obtained. Results: The customer orientation positively influences relational penetration capability and customer knowledge accessibility which can improve salesperson performance. The salesperson-customer relationship quality shows a positive impact on the salesperson's relational penetration capability, salesperson performance, and relational penetration capability which will lead to an improved salesperson-customer relationship. Higher knowledge levels of customer necessity have important implications for a salesperson's capability of finding potential customers and of fulfilling customers' requirements through careful analysis of necessity. Conclusions: The salespeople should be capable of building and maintaining a good relationship with their customers as an indication that salespeople of Insurance Service Company Distribution in Central Java have good performance.

• 한국정보통신학회논문지
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• 제25권5호
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• pp.701-708
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• 2021

본 논문에서는 보안 기능이 추가된 DDS(Data Distribution Service)의 디스커버리 및 메시지 전송 성능에 대해 분석한다. DDS는 분산 환경에서 실시간 통신을 위한 발간-구독 방식의 통신 프로토콜을 제공한다. 발간-구독 방식은 성능, 확장성 그리고 가용성 측면에서 강점을 가지며 국방, 교통, 의료 등 다양한 분야에서 사용되고 있다. 최근 급증하는 보안 위협에 대비하기 위해 많은 통신 표준에서 보안 기능을 추가 및 재정의 하였으며, DDS 또한 보안 기능이 추가된 표준이 발표되었다. 하지만 보안 DDS의 기능 사용을 위해 증가한 오버헤드가 기존 시스템에 미칠 영향성에 대한 연구는 이루어 지지 않았다. 실험 결과는 기존 DDS와 보안 DDS의 디스커버리 및 메시지 전송 성능을 비교하여 보여준다.

• 유통과학연구
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• 제22권5호
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• pp.27-37
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• 2024

Purpose: Evaluating hotel performance is crucial in the tourism industry, and expanding knowledge through value-centric innovation in distribution is approached from the service-dominant logic perspective. This study aims to explore and enhance understanding of efforts to improve hotel performance by introducing a new concept of significant value-centric innovation in distribution. A novel proposition is presented, synthesizing diverse marketing innovations through the lens of service-dominant logic to foster originality. Research Design, Data, and Methodology: Data from 166 respondents across various levels of hotel structural positions in Indonesia were analyzed using SEM-PLS. The relationship between market orientation and hotel performance was explored using the SEM-PLS technique. Results: The findings indicate that market orientation contributes to enhancing hotel performance. Additionally, value-centric innovation in distribution is crucial in addressing inconsistencies observed in previous studies and indicators related to variables significantly affecting hotel performance. Moreover, value-centric innovation in distribution directly improves performance indicators. Conclusions: The practical implication of this research is leveraging market orientation to enhance hotel performance. Hotel owners are encouraged to effectively implement value-centric innovation in distribution by fostering collaboratively generated shared value creation.

• 유통과학연구
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• 제12권7호
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• pp.53-61
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• 2014

Purpose - This study focuses on "large-scale marts," which is a typical discount-based retail channel (hereinafter, DRC), and provides practical managerial implications by applying the KD-SQS service quality factor based on customers' experiential perspective by developing and applying existing service measures. Research design, data, and methodology - The research subjects include adults who have experienced "large-scale marts." The research involved SPSS 20.0 and AMOS 19.0 packages; path analysis is used to analyze structural relationships. Results - First, physical aspects, human interaction, and additional convenience aspects of service quality have statistically significant influence on service value. Second, physical aspects, human interaction, and policy have statistically influence on store loyalty. Third, service value influences store loyalty. Fourth, service guarantee adjusts the relationship between service quality, service value, and store loyalty in terms of human interaction and policy. Conclusion - Among service quality measures, improving service value through personal service needs to be prioritized, while we need to develop different methods for the service guarantee system to effectively influence service value and store loyalty.

• 유통과학연구
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• 제12권11호
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• pp.25-34
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• 2014

Purpose - Considering that the governments' official statistics on the optimum scale of the domestic service industry will be crucial in future, this study's results will be used as an important benchmark to develop and verify the parameters in the government's official statistics. Research design, data, and methodology - To identify the appropriate scale of Korea's service industry and its adequacy, I have determined them through estimation using a regression method involving panel data analysis on the panel data of 30 OECD countries. Results - The regression coefficient provided indications of being non-linear. This means that a U-shaped curve relationship exists-that is, the level of the economic growth leverage decreases along with the service industry's growth up to the level of 70.9% in terms of the Korean service industry's adequacy; it increases along with the service industry's growth at a level higher than 70.9%. Conclusions - While the current proportion of the size of the service industry among all industries in Korea stands at 50.7%, its proper proportion estimated by a regression analysis was 70.9%.

• 정보보호학회논문지
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• 제13권2호
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• pp.107-114
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• 2003

본 논문에서는 DIAMETER AAA(Authentication, Authorization and Accounting) 하부 구조를 가지고 Mobile IP 액세스 기법을 사용하는 cdma2000 패킷 데이터 서비스에서 W(mobile node)와 AAAH(home AAA server)간의 상호 인증과 Mobile IP 개체들간에 안전한 세션키 분배를 위한 방법을 제안한다. 제안된 프로토콜은 DIAMETER AAA 하부 구조를 가정하며 c의 비효율성을 개선하고, 인증과 키 분배 프로토콜의 안전성 요구 사항들을 모두 만족한다. 또한 1xEV-DO에 대한 패킷 데이터 세션 하이재킹 공격을 방지하기 위해 제안된 기법에 의해 분배된 키를 1xEV-DO 무선 인터페이스 패킷 데이터 보안을 위한 키 생성에 적용한다.