• Korean Journal of Veterinary Research
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• v.46 no.2
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• pp.159-164
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• 2006

A stochastic simulation model incorporated with Reed-Frost approach was derived for evaluating diagnostic performance of a test used for a screening program of an infectious disease. The Reed-Frost model was used to characterize the within-herd spread of the disease using a hypothetical example. Specifically, simulation model was aimed to estimate the number infected animals in an infected herd, in which imperfect serologic tests are performed on samples taken from herds and to illustrate better interpreting survey results at herd-level when uncertainty inevitably exists. From a risk analysis point of view, model output could be appropriate in developing economic impact assessment models requiring probabilistic estimates of herd-level performance in susceptible populations. The authors emphasize the importance of knowing the herd-level diagnostic performance, especially in performing emergency surveys in which immediate control measures should be taken following the survey. In this context this model could be used in evaluating efficacy of a survey program and monitoring infection status in the area concerned.

• Journal of Information Processing Systems
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• v.8 no.2
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• pp.279-300
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• 2012

Uncertainty and dynamism surrounding pervasive systems require new and sophisticated approaches to defining, detecting, and handling complex exceptions. This is because the possible erroneous conditions in pervasive systems are more complicated than conditions found in traditional applications. We devised a novel exception description and detection mechanism based on "situation"- a novel extension of context, which allows programmers to devise their own handling routines targeting sophisticated exceptions. This paper introduces the syntax of a language support that empowers the expressiveness of exceptions and their handlers, and suggests an implementation algorithm with a straw man analysis of overhead.

• International journal of advanced smart convergence
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• v.7 no.1
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• pp.15-23
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• 2018

Spectrum allocation is a key operation in cognitive radio networks (CRNs), where secondary users (SUs) are usually selfish - to achieve itself utility maximization. In view of this context, much prior lit literature proposed spectrum allocation base on non-cooperative game models. However, the most of them proposed non-cooperative game models based on complete information of CRNs. In practical, primary users (PUs) in a dynamic wireless environment with noise uncertainty, shadowing, and fading is difficult to attain a complete information about them. In this paper, we propose a non-cooperative game joint hidden markov model scheme for spectrum allocation in CRNs. Firstly, we propose a new hidden markov model for SUs to predict the sensing results of competitors. Then, we introduce the proposed hidden markov model into the non-cooperative game. That is, it predicts the sensing results of competitors before the non-cooperative game. The simulation results show that the proposed scheme improves the energy efficiency of networks and utilization of SUs.

• Nuclear Engineering and Technology
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• v.53 no.11
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• pp.3675-3684
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• 2021

Human reliability analysis (HRA) is a proactive approach to model and evaluate human systematic errors, and has been extensively applied in various complicated systems. Dependence assessment among human errors plays a key role in the HRA, which relies heavily on the knowledge and experience of experts in real-world cases. Moreover, there are ofthen different types of uncertainty when experts use linguistic labels to evaluate the dependencies between human failure events. In this context, this paper aims to develop a new method based on linguistic hesitant fuzzy sets and the technique for human error rate prediction (THERP) technique to manage the dependence in HRA. This method handles the linguistic assessments given by experts according to the linguistic hesitant fuzzy sets, determines the weights of influential factors by an extended best-worst method, and confirms the degree of dependence between successive actions based on the THERP method. Finally, the effectiveness and practicality of the presented linguistic hesitant fuzzy THERP method are demonstrated through an empirical healthcare dependence analysis.

• Acta Via Serica
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• v.5 no.2
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• pp.1-24
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• 2020

Afghanistan has experienced more than four decades of severe disruption, ever since the communist coup of April 1978 plunged the country into a state of disorder that was then severely aggravated by the Soviet invasion of Afghanistan in December 1979. Despite the high hopes that accompanied the overthrow of the Taliban regime in 2001, Afghanistan's path in the first two decades of the 21st century has proved to be anything but smooth, and this article highlights a confluence of challenges - political, diplomatic, and societal - that Afghanistan presently faces, challenges that in large measure account for the profound uncertainty that clouds its future. The article is divided into four sections. The first provides some context for the discussion of these three challenges. The remaining sections investigate the particular challenges - intra-elite rivalries, a fragile and defective peace process, and the underreported but grave threat to life and limb in Afghanistan resulting from the COVID-19 pandemic - in more detail. Together, these challenges highlight the dangers of wishful thinking about harsh realities.

• Asia Marketing Journal
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• v.18 no.1
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• pp.75-97
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• 2016

Globalization and the emergence of new markets has placed increased emphasis on cross-cultural sales and marketing research. Despite considerable advances in the personal selling literature, little is known about the cross-cultural transferability of key constructs. Given the degree to which well-accepted relational sales behaviors such as ASB and customer oriented selling reflect Western values such as individualism and low uncertainty avoidance, the relative efficacy of such practices in alternative cultural context is less clear. Using a Korean sample, our results confirm the beneficial direct effects of these relational selling practices upon performance. However, we also find strong workgroup interdependence diminishes the effects of ASB and that performance fully mediates the relationship between both sales behaviors and job satisfaction. In contrast to prior results, we find female salespeople and those newer to their position demonstrate stronger ASB.

• Asia pacific journal of information systems
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• v.34 no.1
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• pp.191-208
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• 2024

This paper proposes the presence and importance of cultural differences to address user engagement in worldwide social media platforms. Based on Hofstede's cultural dimensions, this paper addresses their new meanings in the context of user engagement in social media. Our propositions address two research questions: (1) how do cultural dimensions, displayed on social media platforms, differ across national cultures?; (2) what different preferences the social media platforms have in terms of which cultural dimensions promote or suppress user engagement? User engagement in social media platforms is explained by the cultural differences in terms of the four cultural dimensions: individualism vs. collectivism, uncertainty avoidance, power distance, and masculinity vs. femininity. Implications are also discussed for research and practice.

• Science of Emotion and Sensibility
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• v.19 no.4
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• pp.41-54
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• 2016

Recently, in the arena of online shopping, the gap between offline channel and online channel tends to be narrowed significantly. Though previous studies also represent this trend, it still remains ambiguous how much offline trust has a significant influence on user's online shopping behaviors. Furthermore, those research issues such as how individual neuroticism, uncertainty, and transaction cost plays an important role in explaining user's online shopping satisfaction and continuance intention. In this sense, this study aims to organize a new research model including offline trust, uncertainty, transaction cost, satisfaction, and continuance intention. Especially, we are interested in investigating how much moderating effects the individual neuroticism possesses for the paths among the rest of constructs. By using 406 valid questionnaires, we found empirically that transaction cost affects user's online shopping continuance intention, but it has no influence on satisfaction. The individual neuroticism has full moderating effects on the paths on the rest of constructs included in the proposed research model.

• International Commerce and Information Review
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• v.19 no.3
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• pp.153-174
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• 2017

The cultural values of the traditional way and the current cultural values of young people are very different, and the rejection of cross-cultural contact is greatly reduced because Korean young people easily accommodate other cultures of the US, Europe or Asia. At present, the cultural values of the traditional way and the current cultural values of young people are very different, and the youthfulness of Korean young people easily accepts other cultures of the US, Europe or Asia, so the resistance to cross - cultural contact is greatly reduced. The purpose of this study is to find out how the younger Korean youths are forming the change of the foreign culture and how the negotiation will proceed according to the formation of these cultures. The results of the analysis show that Korean young people have collectivism cultural rights and that they are consistent with the previous research that there is tendency to avoid uncertainty. On the other hand, there is a tendency of opposition as a result of the empirical analysis that the Koreans have a strong orientation, a high power interval, and strong masculinity. Also, as a result of analyzing the changes in Korean culture that belongs to the high background culture, Korean young people tend to be centered in the past and decision makers tend to decide by the chief executive. On the other hand, Korean young people were denied all the verifiable cultural attributes that cultural properties and communication that maintain openness to share space exposures and office space are non - verbal, tacit communication and time observation are very long and uncertain.

• Safety and Health at Work
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• v.11 no.2
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• pp.127-135
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• 2020

A safe work environment is crucial in high-risk industries, such as construction refurbishment. Safety incidents caused by uncertainty and unexpected events in construction refurbishment systems are difficult to control using conventional safety management techniques. Resilience engineering (RE) is proposed as an alternative to traditional safety management approaches. It presents a successful safety management methodology designed to deal with uncertainty in high-risk work environments. Despite the fact that RE resides in the safety domain, there is no common set of RE indicators to measure and assess resilient in the work environment. The main aim of this research is to explore RE indicators that have been identified as important in developing and assessing the resilient work environment in high-risk industries, particularly in construction refurbishment. Indicators have been attained through a systematic literature review of research and scholarly articles published between the years 2004 and 2019. The literature review explored RE indicators in various industries. Descriptive analysis and co-occurrence-based network visualization were used for data analysis. The findings revealed 28 RE indicators in 11 different high-risk industries. The results show that the four commonly used indicators were: top-management commitment, awareness, learning, and flexibility, all of which have a strong relationship with RE. The findings of this study are useful for stakeholders when making decisions concerning the most important RE indicators in the context of their research or practice as this would avoid the ambiguity and disparity in the identification of RE indicators.