• International journal of advanced smart convergence
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• 제8권4호
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• pp.169-178
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• 2019

Due to the characteristics of an ad hoc network without a control center, self-organization, and flexible topology, the trust evaluation of the nodes in the network is extremely difficult. Based on the analysis of ad hoc networks and the blockchain technology, a blockchain-based node-level trust evaluation model is proposed. The concepts of the node trust degree of the HASH list on the blockchain and the perfect reward and punishment mechanism are adopted to construct the node trust evaluation model of the ad hoc network. According to the needs of different applications the network security level can be dynamically adjusted through changes in the trust threshold. The simulation experiments demonstrate that ad-hoc on-demand distance vector(AODV) Routing protocol based on this model of multicast-AODV(MAODV) routing protocol shows a significant improvement in security compared with the traditional AODV and on-demand multipath distance vector(AOMDV) routing protocols.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제28권1호
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• pp.4-13
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• 2017

The seeds of addiction are typically sown years prior to the onset of addictive substance use or engagement in addictive behaviors, due to the priming of the reward pathway (RewP) by alterations in the mechanism of stress-signaling from the hypothalamic-pituitary-adrenal axis (HPA) and related pathways. Excessive stress from a single-event and/or cumulative life experiences during childhood, such as those documented in the Adverse Childhood Experiences Study, is translated into neurobiological toxicity that alters the set-point of the HPA axis and limbic system homeostasis [suggested new term: regulation pathway (RegP)]. The resultant alteration of the RegP not only increases the risk for psychiatric and physical illness, but also that for early onset and chronic addictions by dysregulating the RewP. This paper reviews the interface of these symbiotic pathways that result in the phenotypic pathology of emotional dysregulation, cognitive impairment, and compulsive behaviors, as well as morbidity and shorter life expectancy when dysregulated by chronic stress.

• Child Studies in Asia-Pacific Contexts
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• 제2권2호
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• pp.123-132
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• 2012

The current study examined 3- and 4-year-olds' affective decision-making in a variety of cultural contexts by comparing European Canadian children to Chinese Canadian, Hong Kong Chinese, and mainland Chinese children (N = 245). All children were tested with a delay of gratification task in which children chose between an immediate reward of lower value and a delayed reward of higher value. Results showed that Chinese Canadian and Hong Kong Chinese children chose more delayed rewards than European Canadian children, with mainland Chinese children showing a trend toward more delayed rewards. Across cultures, 4-year-olds chose more delayed rewards than 3-year-olds; and among 4-year-olds, girls made more such choices than boys. The findings are consistent with previous findings that exposure to Chinese culture is associated with better cool executive function, but they also highlight the importance of examining development across diverse cultural contexts.

• Journal of Technology Innovation
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• 제6권1호
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• pp.215-249
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• 1998

This study empirically examines the relationship between the career orientations of R&D professionals and their demographic characteristics (age, tenure, and education level), affiliated organizations (public and private organizations), reward systems. It further explores the contingent effects of the career orientation fit between leader and members on their performance. The results reveal that : 1) five different career orientations (technical, manager, project, technical transfer, and entrepreneur) are empirically distinguished, 2) technical orientation of R&D professionals is higher in public in private sectors, 3) technical, project, and manager orientation are positively associated with the education level, while technical transfer and entrepreneur orientation are negatively associated with the education level, 4) manager and technical transfer orientation is positively related with age and tenure, 5) the career orientation fit between leader and member is closely related with job satisfaction and organization commitment, and partially related with technical performance, 6) R&D professionals with different types of career orientation exhibit different preference to various rewards. Based on these findings, this study suggests several practical implications for the design of career ladder, mentoring, and reward systems of R&D professionals.

• Fashion & Textile Research Journal
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• 제13권2호
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• pp.242-252
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• 2011

The purpose of the study was to investigate customer loyalty programs of diverse types of retailers. As offline retailers, department store and discount store retailers were examined, and as nonstore retailers, online store and TV home shopping retailers were investigated. Types of customer loyalty programs were analyzed based on Dowling and Uncles'(1997) loyalty program framework which included two schemes, types of reward(direct versus indirect rewards) and timing of reward(immediate versus delayed rewards). The study found that different types of retailers utilized different types of loyalty programs: Department store used all the type of rewards, discount store focused on direct/immediate rewards, online store retailers used direct/delayed rewards and/or direct/immediate rewards, and TV home shopping retailers focused on direct/delayed rewards. The study provided diverse managerial and academic implications.

• Journal of the Korean Society of Clothing and Textiles
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• 제34권1호
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• pp.102-111
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• 2010

This study examines how CEO leadership influences employee trust, job satisfaction, and commitment in fashion companies. A survey was conducted from June 17 to July 15 in 2009. The data were collected from fashion company employees in the Seoul metro area and 360 respondents were used in the data analysis. The statistical analysis methods were frequency analysis, factor analysis, reliability analysis, and multiple regression analysis. The results of this study are the transactional leadership of CEOs in fashion companies classified by contingent reward leadership and management through exceptional leadership. The transformational leadership of CEOs in fashion companies is classified by charismatic leadership and individualized consideration leadership. Second, CEO's contingent reward leadership, charismatic leadership, and individualized consideration leadership influence employee trust in the CEO. Third, the employee trust in the CEO has an effect on job satisfaction and commitment in fashion companies.

• The Journal of Information Technology
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• 제6권3호
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• pp.97-113
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• 2003

The efficient conduct of the win-win strategic alignment in leisure industry is the one of the best way to cope with current situation. The purposes of this study are to identify the change of theme park consumers' visit intention when theme park joins with the membership program(reduced price) & Reward program of Network marketing system. From this study, it was found as follows : First, Membership progeam(reduced price) affects the change of consumer's preference to theme park.($before\;12.6\%,\;arter\;49.1\%$) Second, Network Marketing(reduced price + win-win rewards program) affects the change of consumer's preference to theme park.($before\;12.6\%,\;arter\;77\%$)

• The Journal of Korea Robotics Society
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• 제15권4호
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• pp.398-403
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• 2020

Robot's throwing control is difficult to accurately calculate because of air resistance and rotational inertia, etc. This complexity can be solved by using machine learning. Reinforcement learning using reward function puts limit on adapting to new environment for robots. Therefore, this paper applied deep reinforcement learning using neural network without reward function. Throwing is evaluated as a success or failure. AI network learns by taking the target position and control policy as input and yielding the evaluation as output. Then, the task is carried out by predicting the success probability according to the target location and control policy and searching the policy with the highest probability. Repeating this task can result in performance improvements as data accumulates. And this model can even predict tasks that were not previously attempted which means it is an universally applicable learning model for any new environment. According to the data results from 520 experiments, this learning model guarantees 75% success rate.

• Knowledge Management Research
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• 제12권2호
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• pp.1-16
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• 2011

This study examined the influence of the antecedents of knowledge transfer from both the knowledge source's and recipient's perspectives using a social network survey. Prior research usually focused on either perspective of the knowledge source or recipient, thus could not include both. Analyzing the responses from 335 R&D employees of the five firms, the study showed that all antecedents of knowledge transfer - reward, reciprocity, subjective norm, and perceived behavioral control - are influential on knowledge transfer from the knowledge source's perspective. However, from the knowledge recipient's perspective, perceived behavioral control was influential on the quality of knowledge transfer and subjective norm was on the number of knowledge recipients. Expected reward and reciprocity did not show significant influence. This study proved that the necessity of considering both the knowledge source's and the recipient's perspectives when measuring knowledge transfer and the importance of intrinsic motivations, such as subjective norm and perceived behavioral control.

• Proceedings of the Korea Contents Association Conference
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• 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
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• pp.197-200
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• 2007

Dynamic power management reduces the power consumption of the system by switching system components into different power states, which have different power consumption levels. The main function of a power management is to decide when to perform state transitions. In this paper, a power management model based on stochastic processes is introduced. This model is developed using SRN (Stochastic Reward Nets), which has facilities to represent system queue and various modeling functions.