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A B S T R A C TSocial networking sites (SNS) have become a significant component of people's daily lives and have revolutionized the ways that business is conducted, from product development and marketing to operation and human resource management. However, there have been few systematic studies that ask why people use such systems. To try to determine why, we proposed a model based on uses and gratifications theory. Hypotheses were tested using PLS on data collected from 148 SNS users. We found that user utilitarian (rational and goal-oriented) gratifications of immediate access and coordination, hedonic (pleasure-oriented) gratifications of affection and leisure, and website social presence were positive predictors of SNS usage. While prior research focused on the hedonic use of SNS, we explored the predictive value of utilitarian factors in SNS. Based on these findings, we suggest a need to focus on the SNS functionalities to provide users with both utilitarian and hedonic gratifications, and suggest incorporating appropriate website features to help users evoke a sense of human contact in the SNS context.

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Purpose – The purpose of this paper is to develop and test an empirically grounded comprehensive framework of e-quality that is the composite of the relationship between e-satisfaction and e-loyalty. This study’s objectives were: first, to develop a comprehensive measurement scale of perceived quality from an operations perspective, based on the classic Engel-Kollat-Blackwell (EKB) decision-making process; second, to develop a framework that integrates dimensions of quality and measures perceptions of e-quality during the customer’s decision-making process; and third, to examine the predictive capability of quality attributes in relation to service operations that rely on customer satisfaction and customer loyalty. Design/methodology/approach – Following review of the related literature, focus group protocols were developed and interviews conducted. Based on the focus group input, surveys were developed and administered. Survey data from 717 online customers allowed testing the research hypotheses, and structural equation modeling allowed validation of the research framework. Findings – The study determined that “e-channel quality”, “e-service quality” (including “web site quality” and “transaction quality”), and “product quality” positively influence customer e-satisfaction within an online operation. These constructs, in turn, influence customer e-loyalty in the e-commerce domain. The findings contribute valuable theoretical and managerial implications that can improve e-service operations. Originality/value – The paper fills a relevant gap in the e-commerce and services operations literature by empirically developing and validating a new and robust quality measurement scale based on the EKB consumer decision-making process. The study also makes an important research contribution by providing empirical evidence that quality is pivotal in gaining customer loyalty and a competitive e-commerce edge.

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This paper presents an effective scheme for detecting incipient faults in post-fault systems (PFSs) subject to adaptive fault-tolerant control (AFTC). Through a survey of existing techniques, it is shown that the adaptivity of the AFTC counteracts the effect of an incipient fault in the PFS. This makes some of the conventional fault-detection strategies, such as Beard-Jones detection filters and adaptive observers, ineffective in this situation. It is shown that the unknown input observer (UIO) is an effective tool; hence, the UIO is designed to decouple the incipient fault from the AFTC such that the fault-detection residual is sensitive only to the incipient fault. Extensive simulation study is presented using an aircraft example to test three fault-detection approaches; it is demonstrated that the UIO is the most effective tool in detecting the incipient fault in a PFS subject to AFTC.

The purpose of this paper is to examine the influence of individualistic cultures (such as the American culture) and collectivistic cultures (such as the Chinese culture) on the interrelationship among service quality, food quality, perceived value, customer satisfaction, and behavioral intentions in the fast-food industry. First, the authors provide empirical evidence of the robust relationships among the constructs across diverse cultures. Second, they investigate how moderator variables such as customer age, gender, and national culture affect customer behavioral intentions. Moreover, they examine how national culture, as a moderator, affects the magnitude of the relationships among these constructs. Using survey data collected from the United States and China, results indicate that national culture does have a moderating effect on the relationships and there are differences in the behavioral intentions of American and Chinese customers. More specifically, in the United States, service quality and food quality have a stronger influence on customer satisfaction than in China. Also, the effect of perceived value on customer satisfaction and the effect of customer satisfaction on customers' behavioral intentions are stronger in China than in the United States. Overall, the findings provide rare crosscultural insights and thus serve as building blocks for strategies in the global fast-food domain. Key words: culture differences, fast-food industry, service quality, structural equation modeling A2. You feel safe conducting financial transactions with the employees. A3. Its employees are consistently friendly and courteous. A4. Its employees are knowledgeable about your food and beverage questions.