Geon Woo Kim, Deok Gyu Lee, Jong Wook Han, Seung Hyun Lee and Sang Wook Kim
The purpose of this paper is to identify security technologies that are essential in making home network systems secure and to describe specialized security mechanisms for the…
Abstract
Purpose
The purpose of this paper is to identify security technologies that are essential in making home network systems secure and to describe specialized security mechanisms for the home network and the relationships among them.
Design/methodology/approach
The research model is designed to support three functions: authentication, authorization, and security policy. Authentication is tested in several methodologies such as id/pw, certificate, or bio; authorization is tested using RBAC methodologies; and security policy is specified using newly‐designed script language, such as xHDL.
Findings
The findings for “authentication” suggest that home network users can access services conveniently and securely. In addition, the findings for “security policy” suggest that security policy for home network requires specialized rather than general specification.
Practical implications
The paper identifies three security functions essential for home network: authentication that supports most existing authentication mechanisms, so as to maximize user accessibility; authorization that is middleware‐independent and beyond the physical transport layer; and security policy optimized for the home network environment.
Originality/value
The paper focuses on an implementation‐based security model for the home network. Though interest and research in home network security are increasing, only limited authentication applications have been adopted in real deployment up to now. This paper introduces an integrated security model and emphasizes safety and convenience so as to promote reliability in home network services.
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Charles W. Mueller and Sang-Wook Kim
The paradox of the contented female worker refers to the fact that women are generally disadvantaged (fewer material rewards) in the workplace relative to men, but are just as…
Abstract
The paradox of the contented female worker refers to the fact that women are generally disadvantaged (fewer material rewards) in the workplace relative to men, but are just as satisfied with their jobs as men. We review various arguments offered to explain the paradox with special attention given to justice-based explanations. Data collected from 30 countries as part of the 2005 ISSP are examined and show that the paradox is essentially a universal, worldwide phenomenon.
Byoung‐Jun Park, Jeoung‐Nae Choi, Wook‐Dong Kim and Sung‐Kwun Oh
The purpose of this paper is to consider the concept of Fuzzy Radial Basis Function Neural Networks with Information Granulation (IG‐FRBFNN) and their optimization realized by…
Abstract
Purpose
The purpose of this paper is to consider the concept of Fuzzy Radial Basis Function Neural Networks with Information Granulation (IG‐FRBFNN) and their optimization realized by means of the Multiobjective Particle Swarm Optimization (MOPSO).
Design/methodology/approach
In fuzzy modeling, complexity, interpretability (or simplicity) as well as accuracy of the obtained model are essential design criteria. Since the performance of the IG‐RBFNN model is directly affected by some parameters, such as the fuzzification coefficient used in the FCM, the number of rules and the orders of the polynomials in the consequent parts of the rules, the authors carry out both structural as well as parametric optimization of the network. A multi‐objective Particle Swarm Optimization using Crowding Distance (MOPSO‐CD) as well as O/WLS learning‐based optimization are exploited to carry out the structural and parametric optimization of the model, respectively, while the optimization is of multiobjective character as it is aimed at the simultaneous minimization of complexity and maximization of accuracy.
Findings
The performance of the proposed model is illustrated with the aid of three examples. The proposed optimization method leads to an accurate and highly interpretable fuzzy model.
Originality/value
A MOPSO‐CD as well as O/WLS learning‐based optimization are exploited, respectively, to carry out the structural and parametric optimization of the model. As a result, the proposed methodology is interesting for designing an accurate and highly interpretable fuzzy model.
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The purpose of this paper is to report an International Symposium on Occupation, Education, and Inequality in Japan and Korea. Discusses earn of the papers of the seven speakers.
Abstract
Purpose
The purpose of this paper is to report an International Symposium on Occupation, Education, and Inequality in Japan and Korea. Discusses earn of the papers of the seven speakers.
Design/methodology/approach
The SRC and the CSSI cosponsored the symposium.
Findings
The papers presented various aspects of Korean society in terms of occupation, education and inequality.
Originality/value
Some of the papers revealed subtle interactions between economic factors and traditional and cultural factors in Korea.
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Karen A. Hegtvedt and Jody Clay-Warner
To do “justice” to the theorizing and empirical work on the topic of justice would be a formidable, if not impossible, task. The study of justice spans centuries (see, for…
Abstract
To do “justice” to the theorizing and empirical work on the topic of justice would be a formidable, if not impossible, task. The study of justice spans centuries (see, for example, Solomon & Murphy, 1990) and disciplines – psychology, sociology, political science, philosophy (Cohen, 1986; Scherer, 1992). Some previously published edited volumes on justice circumscribe the content as applicable, for example, to organizations (Greenberg & Colquitt, 2005), to the affectional bond (Lerner & Mikula, 1994), or with regard to the role of emotions (De Cremer, 2007). Other volumes fall loosely under titles to the effect of “justice in social behavior” (e.g., Bierhoff, Cohen, & Greenberg, 1986; Montada & Lerner, 1996) or “research and applications” (e.g., Törnblom & Vermunt, 2007). These volumes offer a variety of theoretical and empirical analyses of justice issues, largely from the point of view of scholars trained in psychology. Indeed, in the social psychological realm, focus is often on individual perceptions of and reactions to various forms of injustice.
Minh Tuan Nguyen, Abdelraheem M. Aly and Sang-Wook Lee
This paper aims to conduct numerical simulations of unsteady natural/mixed convection in a cavity with fixed and moving rigid bodies and different boundary conditions using the…
Abstract
Purpose
This paper aims to conduct numerical simulations of unsteady natural/mixed convection in a cavity with fixed and moving rigid bodies and different boundary conditions using the incompressible smoothed particle hydrodynamics (ISPH) method.
Design/methodology/approach
In the ISPH method, the pressure evaluation is stabilized by including both of divergence of velocity and density invariance in solving pressure Poisson equation. The authors prevented the particles anisotropic distributions by using the shifting technique.
Findings
The proposed ISPH method exhibited good performance in natural/mixed convection in a cavity with fixed, moving and free-falling rigid body. In natural convection, the authors investigated the effects of an inner sloshing baffle as well as fixed and moving circular cylinders on the heat transfer and fluid flow. The heated baffle has higher effects on the heat transfer rate compared to a cooled baffle. In the mixed convection, a free-falling circular cylinder over a free surface cavity and heat transfer in the presence of a circular cylinder in a lid-driven cavity are simulated. Fixed or moving rigid body in a cavity results in considerable effects on the heat transfer rate and fluid flow.
Originality/value
The authors conducted numerical simulations of unsteady natural/mixed convection in a cavity with fixed and moving rigid bodies and different boundary conditions using the ISPH method.
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The purpose of this paper is to examine how corruption has changed over time in South Korea and to explore how the corruption control and prevention efforts of the Korean…
Abstract
Purpose
The purpose of this paper is to examine how corruption has changed over time in South Korea and to explore how the corruption control and prevention efforts of the Korean government have been successful and failed.
Design/methodology/approach
This paper draws on institutional theory to formulate a qualitative analysis to assess the effectiveness of anti-corruption policies and measures, and to identify the strengths and weaknesses of anti-corruption reform efforts in South Korea.
Findings
This paper argues that while the Korean government has been quite successful in building anti-corruption institutions to control low-level petty corruption, it has failed to institutionalize anti-corruption institutions to curb high-level grand corruption.
Originality/value
While many studies have attempted to identify the successful factors of fighting corruption, this paper draws a theoretical distinction between institution-building vs institutionalization to examine the success and failure of corruption control and prevention efforts in South Korea.
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Banu Poobalan, Jeong Hyun Moon, Sang-Cheol Kim, Sung-Jae Joo, Wook Bahng, In Ho Kang, Nam-Kyun Kim and Kuan Yew Cheong
The high density of defects mainly attributed to the presence of silicon oxycarbides, residual C clusters, Si- and C-dangling bonds at or near the SiO2/SiC interface degrades the…
Abstract
Purpose
The high density of defects mainly attributed to the presence of silicon oxycarbides, residual C clusters, Si- and C-dangling bonds at or near the SiO2/SiC interface degrades the performance of metal-oxide-semiconductor (MOS) devices. In the effort of further improving the quality and enhancement of the SiC oxides thickness, post-oxidation annealed by a combination of nitric acid (HNO3) and water (H2O) vapor technique on thermally grown wet-oxides is introduced in this work. The paper aims to discuss these issues.
Design/methodology/approach
A new technique of post-oxidation annealing (POA) on wet-oxidized n-type 4H-SiC in a combination of HNO3 and H2O vapor at various heating temperatures (70°C, 90°C and 110°C) of HNO3 solution has been introduced in this work.
Findings
It has been revealed that the samples annealed in HNO3 + H2O vapour ambient by various heating temperatures of HNO3 solution; particularly at 110°C is able to produce oxide with lower interface-state density and higher breakdown voltage as compared to wet-oxidized sample annealed in N2 ambient. The substrate properties upon oxide removal show surface roughness reduces as the heating temperature of HNO3 solution increases, which is mainly attributed due to the significant reduction of carbon content at the SiC/SiO2 interface by C=N passivation and CO or CO2 out-diffusion.
Originality/value
Despite being as a strong oxidizing agent, vaporized HNO3 can also be utilized as nitridation and hydrogen passivation agent in high temperature thermal oxidation ambient and these advantages were demonstrated in 4H-SiC.
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Sang Wook Chung, Young Sung Seo and Won Young Yun
The paper aims to present acceptance sampling plans based on failure‐censored step‐stress accelerated life tests for items having Weibull lives.
Abstract
Purpose
The paper aims to present acceptance sampling plans based on failure‐censored step‐stress accelerated life tests for items having Weibull lives.
Design/methodology/approach
The model parameters are estimated by the method of maximum likelihood. Based on asymptotic distribution theory, the sample size and the acceptability constant are determined satisfying the producer's and consumer's risks. The step‐stress accelerated life test is optimized to have a minimum sample size by minimizing the asymptotic variance of test statistic. Two modes of step‐stress accelerated life test are considered, and a comparison between them is made. The proposed sampling plans are compared with the sampling plans based on constant stress accelerated life tests.
Findings
Asymptotic variance is a dominating factor in determining the sample size required for a sampling plan to determine the acceptability of a lot. The sample size is minimized by optimally designing a step‐stress accelerated life test so that the asymptotic variance is minimized.
Originality/value
The sampling plans presented in this paper are particularly useful when items to be tested are so reliable and are useful to reliability engineers and life test planners.