• Proceedings of the Safety Management and Science Conference
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• 2006.11a
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• pp.373-383
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• 2006

Logistics is one of the most important factors to manage a stream of materials in economic environment. Establishing effective logistics system needs to consider some constraints which are fluctuation of materials volume, a long distance between makers and consumers, one way logistics and small quantity batch production. It is estimated that Unit Load System should be a powerful method to cope with those problems. It helps to realize the key issues which are Standardization and Logistics Pool System The Material Unification of Logistics System is able to participate in all kinds of industries including manufacturing, distribution and logistics. This system has some merits which are a long distance transportation cost down, product recovery, and treatment in the unbalance of demand and supply caused by unstable materials volume. Four strategies of Material Logistics Model are Packing Rationalization, Logistics Pool System, JIT System application and establishing effective infrastructure. The Material Unification Of Logistics System based on Unit Load System achieves efficiency of logistics and largely decreases moving cost.

• International Commerce and Information Review
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• v.1 no.1
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• pp.227-251
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• 1999

The realization of the Internet and Electronic Commerce through the progress development of the information & communication has changed the transition of the financial settlement system all of the world. And Electronic Commerce has becoming the most important tools to decide the value from the real money, existing bills, coins to the Electronic Money. Electronic Money is very useful materials with Electronic Wallet at cyber times in the future. So that reason, I studied Electronic Money's present situation & after development direction in Korea. And the purpose of this paper is to introduce Electronic Money's modem definition and to analysis the common use situation, operation at home and abroad at Electronic Commerce times. In add to investigated advanced countries Electronic Money utilization and drawed out current events point. So I suggest to this like point, in honour of Electronic Money's common use in Korea. First to establish universality. Second, to make various terminals and the powerful networking structure. Third, to establish stability. Fourth, renovating the system goes side by side. Futhermore, to develop Electronic Money's, it is necessary to make skilled labour and to learn foreign advanced technology.

• The Journal of Information Systems
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• v.7 no.1
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• pp.181-208
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• 1998

In many literatures of model management, various schemes for representing model base schema have proposed. Ultimately, the goal is to arrive at a set of mutually supportive and synergistic methodologies and tools for the modeling problem domain and model base design. This paper focus on how best to structure and represent conceptual model of problem domain and schema of model base. Semantic concepts and modeling constructs are valuable conceptual tools for understanding the structural relationships and constraints involved in an model management environment. To this end, we reviewed the model management literature, and analyzed the constructs of modeling tools of data model management graph-based approach. Although they have good tools but most of them are not enough for the representation of structural relationships and constraints. So we wanted more powerful tools which can represent diverse constructs in a decision support modeling and model base schema design. For the design of a model base, we developed object modeling framework which uses Object Modeling Techniques (OMT). In Object Modeling Framework, model base schema are classified into conceptual schema, logical schema, and physical schema. The conceptual schema represents the user's view of problem domain, and the logical schema represents a model formatted by a particular modeling language. The schema design, this paper proposes an extension of Object Model to overcome some of the limitations exhibited by the OMT. The proposed tool, Extended Object Model(EOM) have diverse constructs for the representation of decision support problem domain and conceptual model base schema.

• JSTS:Journal of Semiconductor Technology and Science
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• v.14 no.4
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• pp.391-406
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• 2014

The performance of General-Purpose computation on Graphics Processing Units (GPGPU) is heavily dependent on the memory access behavior. This sensitivity is due to a combination of the underlying Massively Parallel Processing (MPP) execution model present on GPUs and the lack of architectural support to handle irregular memory access patterns. Application performance can be significantly improved by applying memory-access-pattern-aware optimizations that can exploit knowledge of the characteristics of each access pattern. In this paper, we present an algorithmic methodology to semi-automatically find the best mapping of memory accesses present in serial loop nest to underlying data-parallel architectures based on a comprehensive static memory access pattern analysis. To that end we present a simple, yet powerful, mathematical model that captures all memory access pattern information present in serial data-parallel loop nests. We then show how this model is used in practice to select the most appropriate memory space for data and to search for an appropriate thread mapping and work group size from a large design space. To evaluate the effectiveness of our methodology, we report on execution speedup using selected benchmark kernels that cover a wide range of memory access patterns commonly found in GPGPU workloads. Our experimental results are reported using the industry standard heterogeneous programming language, OpenCL, targeting the NVIDIA GT200 architecture.

• JSTS:Journal of Semiconductor Technology and Science
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• v.13 no.1
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• pp.8-14
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• 2013

A low density parity check (LDPC) decoder provides a most powerful error control capability for mobile communication devices and storage systems, due to its performance being close to Shannon's limit. In this paper, we introduce an efficient overlapped LDPC decoding algorithm using a upper dual-diagonal parity check matrix structure. By means of this algorithm, the LDPC decoder can concurrently execute parts of the check node update and variable node update in the sum-product algorithm. In this way, we can reduce the number of clock cycles per iteration as well as reduce the total latency. The proposed decoding structure offers a very simple control and is very flexible in terms of the variable bit length and variable code rate. The experiment results show that the proposed decoder can complete the decoding of codewords within 70% of the number of clock cycles required for a conventional non-overlapped decoder. The proposed design also reduces the power consumption by 33% when compared to the non-overlapped design.

• The Journal of Society for e-Business Studies
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• v.15 no.4
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• pp.197-218
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• 2010

Korean Government has invested a lot of efforts on digital contents industry. It believes that the digital contents industry enables Korea to regain the reputation of the most powerful IT country. Among its various efforts to promote the digital contents industry, a Digital Contents Identifier System, called UCI(Universal Contents Identifier), has been developed and deployed. UCI has provided a critical infrastructure for digital contents production and distribution. Thanks to Korean Government's efforts, users (companies and individuals) have currently registered 3.8 million digital contents through 25 RA organizations. Although the number of registered contents has been increased rapidly, many organizations hesitate to adopt the UCI system due to the lack of visible and short-term returns from the UCI system. Thus, this research tries to explore factors which affect UCI user satisfaction. This research finds that user's awareness, information quality, and service quality are the critical influencing factors toward UCI user satisfaction. In addition, this research finds that the critical influencing factors in public organizations are different from the critical influencing factors in private organizations. These findings hopefully provide useful guidelines for disseminating the UCI system widely.

• Research in Community and Public Health Nursing
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• v.23 no.4
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• pp.366-375
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• 2012

Purpose: The purpose of this study was to identify predictors of drinking problems in Korean international students in the United States. Methods: The subjects involved this study were 190 Korean international students in the United States. Data were measured using a drinking problems questionnaire, an acculturative stress scale for international student, and the CES-D. The collected data were analyzed using the SPSS/WIN 17.0 program to calculate mean, standard deviation, ANOVA, Sheff$\acute{e}$ test and pearson's correlation coefficient. and stepwise multiple regression. Results: 1) The mean score of the degree of perceived acculturative stress was $2.15{\pm}0.63$, of depression was $17.67{\pm}9.85$, and of drinking problems was $15.03{\pm}15.52.2$) There were significant correlations between acculturative stress and drinking problems (r=.506, p<.001), between depression and drinking problems (r=.6726, p<.001), and between acculturative stress and depression (r=.453, p<.001). 3) In stepwise multiple regression analysis the most powerful predictor of drinking problems were acculturative stress (${\beta}$=.243, p<.001), and depression (${\beta}$=.562, p<.001). Conclusion: Based on the results, practical implications for reducing the acculturative stress and improving the psychological well-being of Korean students were discussed.

• Research in Community and Public Health Nursing
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• v.24 no.4
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• pp.480-487
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• 2013

Purpose: The purpose of this study was to investigate the relationship among family functioning, empathy and aggression by high school students. Methods: This was a descriptive study. The survey participants were 467 high school students from M city. Data were collected from November 29 to December 7, 2012 and self-report questionnaires including a Family Adaptability Cohesion Evaluation Scale, Interpersonal Reactivity Indexes, and an Aggression Questionnaire. The collected data were analyzed by descriptive statistics, independent-samples t-test, ANOVA, stepwise multiple regression. Results: The majority of the subjects were 2nd graders (42.0%) and female (57.2%). 59.7% of the subjects had religion, 84.8% were living together with parents. The mean ages of their fathers and mothers were $49.90{\pm}0.20$ and $46.85{\pm}0.19$ respectively. Aggression was found to have a statistically negative correlation with family functioning and empathy. Stepwise multiple regression analysis revealed that the most powerful predictor of aggression was empathic concern. Empathic concern, family cohesiveness, perspective taking, personal distress and gender accounted for 16.7% of the variances. Conclusion: It is necessary to provide aggressiveness reduction programs for high school students that consider their family functioning and empathy.

• Journal of Korean Public Health Nursing
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• v.19 no.2
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• pp.339-348
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• 2005

Purpose: This study was conducted to understand the degree of Internet addiction, Internet expectation and self-efficacy and we also wanted to elucidate the factors influencing this addiction among the high school students in Korea. Method: A total of 348 high school students in the Gyeoung-gi, Daegu and Gyeoung-buk area were surveyed in this study. Data collection was conducted through the use of questionnaires. Results: Internet addiction among high school students in Korea was relatively low. In the overall ratio distribution, however, the students who were classified as either addicted or at risk of addiction accounted were a high percentage of the subjects, 31%. A positive or negative relationship was found between internet addiction and the research variables. Multiple regression analysis revealed that the most powerful predictor of Internet addiction was Internet expectations. Conclusion: Using the above results, it would be necessary to develop an Internet addiction prevention program for adolescents. There should be a qualitative study in the future for an in-depth understanding of internet addiction of adolescents.

• The Korean Journal of Emergency Medical Services
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• v.11 no.2
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• pp.5-17
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• 2007

Purpose: The purpose of this study was to supply basic data for a health promoting program and to elevate the level of it by examining whether EMT-P Students' health promoting behaviors were related to health percetion, health concept, health status, self-esteem, perceived benefits of action, perceived barriers of action, perceived self-efficacy, activity-related affect, social support, preference, prior related behavior, and a plan for action. Method: Subjects were 116 EMT-P Students in K city. Data collection method was a structured questionnaire. Data was analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation analysis, and stepwise multiple regression. Result: The most powerful predictor was prjor related behavior(28.8%). Altogether prjor related behavior, health status, perceived barriers of action, a plan for action were proven to account for 44.6% of health promoting behaviors of EMT-P Students. Conclusion: It suggested that prjor related behavior, health status, perceived barriers of action, a plan for action should be considered when developing a EMT-P Students' health promoting program.