• Health Policy and Management
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• v.31 no.4
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• pp.479-490
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• 2021

Background: Conflict in the medical world in 2020 led to the rejection of the national examination for doctors. This study explained the process until the end of the national test refusal situation triggered in 2020 through the signaling game theory. The government has succeeded in requiring medical students to take the national exam. Methods: To explain the rejection of the national examination, we first compose and show an example of two small non-signaling games where medical students know which type the government is of, then combine them to play a signaling game. Results: The behavior of the government and medical students was examined through the signaling game model. In the context of the coronavirus disease 2019 (COVID-19) pandemic, the government makes an ultimatum, whatever the type. And the medical students accept it. They judged that the government could not be expected to abolish the policy. If COVID-19 had not occurred, medical students would have been able to continue the confrontation. Conclusion: The government instilled in the other party the perception that the government would not bend its policies because it was the surly type and would not be afraid of a strong confrontation. Through the image created in this way, the government was forced to accept the ultimatum by medical students. Academically, this study is to deal with the policy-making process through the signaling game theory. In the area of health care policy, this study suggests that various situations such as the type of government or the spread of COVID-19 can become important in addition to the rationality of the policy itself.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.1
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• pp.58-73
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• 2021

Cloud Service Providers (CSPs) enable their users to access Cloud computing and storage services from anywhere in quick and flexible manners through the Internet. With the basis of 'pay-as-you-go' model, it makes the interactions between CSPs and the users play a vital role in shaping the Cloud computing market. A pool of virtualized and dynamically scalable Cloud services that delivered on demand to the users is associated with guaranteed performance and cost-provisioning. It needed a costing scheme for determining suitable charges in order to secure lease pricing of the Cloud services. However, it is hard to meet the satisfied prices for both CSPs and users due to their conflicting needs. Furthermore, there is lack of Service Level Agreements (SLAs) that allowing the users to take part into price negotiating process. The users may lose their interest to use Cloud services while reducing CSPs profit. Therefore, this paper proposes a generic costing scheme for Cloud services using General Equilibrium Theory (GET). GET helps to formulate the price function for various services' factors to match with various demands from the users. It is initially determined by identifying the market circumstances that a general equilibrium will be hold and reached. Specifically, there are two procedures of agreement made in response to (i) established equilibrium supply and demand, and (ii) service price formed and constructed in a price range. The SLAs in our costing scheme is integrated to satisfy both CSPs and users' needs while minimizing their conflicts. The price ranging strategy is deliberated to provide prices' options to the users with respect their budget limit. Meanwhile, the CSPs can adaptively charge based on users' preferences without losing their profit. The costing scheme is testable and analyzed in multi-tenant computing environments. The results from our simulation experiments demonstrate that the proposed costing scheme provides better users' satisfaction while fostering fairness pricing in the Cloud market.

• Structural Engineering and Mechanics
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• v.86 no.3
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• pp.291-309
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• 2023

This paper addresses the finite element modeling of functionally graded porous (FGP) beams for free vibration and buckling behaviour cases. The formulated finite element is based on simple and efficient higher order shear deformation theory. The key feature of this formulation is that it deals with Euler-Bernoulli beam theory with only three unknowns without requiring any shear correction factor. In fact, the presented two-noded beam element has three degrees of freedom per node, and the discrete model guarantees the interelement continuity by using both C⁰ and C¹ continuities for the displacement field and its first derivative shape functions, respectively. The weak form of the governing equations is obtained from the Hamilton principle of FGP beams to generate the elementary stiffness, geometric, and mass matrices. By deploying the isoparametric coordinate system, the derived elementary matrices are computed using the Gauss quadrature rule. To overcome the shear-locking phenomenon, the reduced integration technique is used for the shear strain energy. Furthermore, the effect of porosity distribution patterns on the free vibration and buckling behaviours of porous functionally graded beams in various parameters is investigated. The obtained results extend and improve those predicted previously by alternative existing theories, in which significant parameters such as material distribution, geometrical configuration, boundary conditions, and porosity distributions are considered and discussed in detailed numerical comparisons. Determining the impacts of these parameters on natural frequencies and critical buckling loads play an essential role in the manufacturing process of such materials and their related mechanical modeling in aerospace, nuclear, civil, and other structures.

• Structural Engineering and Mechanics
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• v.87 no.6
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• pp.529-540
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• 2023

A novel laminated-hybrid-composite-beam (LHCB) of glass-epoxy infused with flyash and graphene is constructed for this study. The conventional mixture-rule and constitutive-relationship are modified to incorporate filler and lamina orientation. Eringen's non-local-theory is used to include the filler effect. Hamilton's principle based on fifth-order-layer-wise-shear-deformation-theory is applied to formulate the equation of motion. The analogous shear-spring-models for LHCB with multiple-cracks are employed in finite-element-analysis (FEA). Modal-experimentations are conducted (B&K-analyser) and the findings are compared with theoretical and FEA results. In terms of dimensionless relative-natural-frequencies (RNF), the dynamic-response in cantilevered support is investigated for various relative-crack-severities (RCSs) and relative-crack-positions (RCPs). The increase of RCS increases local-flexibility in LHCB thus reductions in RNFs are observed. RCP is found to play an important role, cracks present near the end-support cause an abrupt drop in RNFs. Further, multiple cracks are observed to enhance the nonlinearity of LHCB strength. Introduction of the first to third crack in an intact LHCB results drop of RNFs by 8%, 10%, and 11.5% correspondingly. Also, it is demonstrated that the RNF varies because of the lamina-orientation, and filler addition. For 0° lamina-orientation the RNF is maximum. Similarly, it is studied that the addition of graphene reduces weight and increases the stiffness of LHCB in contrast to the addition of flyash. Additionally, the response of LHCB to moving mass is accessed by appropriately modifying the numerical programs, and it is noted that the successive introduction of the first to ninth crack results in an approximately 40% to 120% increase in the dynamic-amplitude-ratio.

• Asia Marketing Journal
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• v.17 no.1
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• pp.123-148
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• 2015

Built on regulatory focus theory, this article develops a research model proposing the relationship between management controls (outcome, activity and capability), sales employees' prevention and promotion focus and their behavioral responses (feedback seeking from different sources and relationship investment). The model also suggests that salesperson perceived organizational fit (P-O fit) contributes by influencing the situational self-regulatory mechanism based on regulatory fit theory. To analyze the data, a structural equation model procedure using LISREL 8.5 was employed. To access the potential common method bias, the MV" marker method was applied using a scale theoretically unrelated to at least one scale in the analysis as the MV marker. The results showed that the greater the salesperson's perceived activity control system, the greater the extent of employee prevention focus. The findings also showed that output control and capability control system are positively related to the promotion focus of salespeople. Salespeople's prevention focus relates negatively to the relational investment and positively to organization feedback seeking. The results indicate that salespeople who have promotion focus exhibit the predicted positive influence on their relationship investment. A significant contribution of this research framework is suggesting salesperson regulatory focus as a mediator and its' effects on different types of sales-related behaviors. The author suggests that the motivational orientations of salespeople play key roles in shaping feedback seeking behaviors from different sources; broadly, that employees with a promotion focus will be more sensitive to customers' feedback, and employees with a prevention focus will seek more feedback from the organization. Furthermore, salespeople with a promotion focus will invest more resources to build relationships with customers than salespeople with a prevention focus. This research also explains the moderating role of person-organization fit on the effect of salespeople's regulatory focus and behavioral responses based on regulatory fit theory

• Information Systems Review
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• v.19 no.1
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• pp.25-48
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• 2017

As the number of Internet users has increased, the uses of social networking sites (SNSs) and online games have become universal activities across gender and ages. The extensive distribution and the usage of the Internet are beneficial to our society, but its adverse effects, such as Internet addiction, which refers to uncontrollable excessive Internet use, are becoming prevalent. Relevant social costs are also becoming troublesome. SNS and gaming addictions have negative effects on one's life, causing significant social problems. To illustrate different facets of these addictions, Problem Behavior Theory is adopted in the study. How self-esteem and perceived family environment affect SNS addiction and gaming addiction is addressed. The main subjects are Korean university students in their 20s who use SNS and play online games. The relationship between SNS addiction and gaming addiction is also addressed.

• Steel and Composite Structures
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• v.52 no.3
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• pp.273-291
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• 2024

This paper presents a three-dimensional displacement-based formulation to investigate the free vibration of functionally graded nanoplates resting on a Winkler-Pasternak foundation based on the nonlocal elasticity theory. The material properties of the FG nanoplate are considered to vary continuously through the thickness of the nanoplate according to the power-law distribution model. A general three-dimensional displacement field is considered for the plate, which takes into account the out-of-plane strains of the plate as well as the in-plane strains. Unlike the shear deformation theories, in the present formulation, no predetermined form for the distribution of displacements and transverse strains is considered. The equations of motion for functionally graded nanoplate are derived based on Hamilton's principle. The solution is obtained for simply-supported nanoplate, and the predicted results for natural frequencies are compared with the predictions of shear deformation theories which are available in the literature. The predictions of the present theory are discussed in detail to investigate the effects of power-law index, length-to-thickness ratio, mode numbers and the elastic foundation on the dynamic behavior of the functionally graded nanoplate. The present study presents a three-dimensional solution that is able to determine more accurate results in predicting of the natural frequencies of flexural and thickness modes of nanoplates. The effects of parameters that play a key role in the analysis and mechanical design of functionally graded nanoplates are investigated.

• Journal of the Korean Institute of Landscape Architecture
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• v.45 no.2
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• pp.101-108
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• 2017

In Korea, playgrounds have been developed quantitatively and qualitatively. However, there is a lack of interest in the play needs of children with disabilities. With this in mind, this study is concerned about the planning and design process of the inclusive playground constructed in 2016 at Seoul Children's Grand Park. The case study covered the Kkumtle Kkumtle playground in Seoul Children's Grand Park and was completed in December 2015. This playground is the first case of an inclusive playground ever built in Korea. The concept of the inclusive playground established in this study is: (1) a playground where not only children with disabilities but both children with disabilities and children without disabilities can play together; (2) a playground for both children with disabilities accompanied by their families and children without disabilities accompanied by family members with disabilities; (3) a playground that ensures universal accessibility to the entire space including play facilities; and (4) a playground where the most essential functions of a playground-fun, curiosity, and adventure-are centered on various activities. In conclusion, we presented limitations and opinions for improvements to design and policy proposals for social expansion of inclusive playgrounds. There are three ways to overcome limitations in design. First, there is a need for an in-depth study of play characteristics by type of disabilities of children. Second, it is necessary to develop facilities suitable for the actual situation of Korea through various social experiments. Third, if the inclusive playground centered on facilities is presented in this study, then several types of integrated playgrounds should be implemented in the future.

• The Journal of the Convergence on Culture Technology
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• v.8 no.3
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• pp.297-304
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• 2022

The purpose of this study is to examine the characteristics and theatricality of everyday plays in Thornton Wilder's Our Town, and to re-examine this work that makes us recognize the importance of everyday life in the COVID-19 era. This work seeks to find a certain value in very trivial events with the subject matter of everyday life such as birth, love and marriage, and death. Grovers Corners, the background of this work, symbolizes the town and the universe where everyone lives today, and the action spans from 1901 to 1913, and this action shows universality in everyday life that takes place even today. Wilder won a second Pulitzer Prize for this work and is a leading figure in non-realist theater. Using an empty stage as the basic frame, this work shows theatricalism, a theory that acknowledges that the action on the stage is not true and shows that fact to the audience. In addition, he leads actors to act with mime instead of props, stimulating the audience's imagination and making them think of props that are not on stage as if they really exist. This work is an everyday play that makes people realize the importance of everyday life, and it has the effect of creating an opportunity for the audience to reflect on the play and life while keeping a distance.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.7 s.144
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• pp.909-917
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• 2005

Based on the theory that formation of Korean Men's Traditional Trousers is related to Mobius strip, this study researches correlation between distinctive construction of Korean Men's Traditional Trousers and historical background based on old documents and restoration. Distinctive construction of Korean Men's Traditional Trousers are as follows. First, Korean Men's Traditional Trousers is manufactured just like Principle of Mobius strip that the square is twisted once, considering its materials' conditions. Second, Korean Men's Traditional Trousers, manufactured larger, feature cubic effect and twisted formative beauty because its waist and ankle parts are tightened with bands. Third, Korean Men's Traditional Trousers, composed of big Sapok and small Sapok in oblique, are suitable for active play due to its high functionality.