• International Journal of Computer Science & Network Security
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• v.21 no.7
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• pp.133-149
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• 2021

The purpose of this study is to explore the role of information systems in the implementation of knowledge management, at King Abdul-Aziz University (KAU) in Jeddah, by highlighting the importance of information systems and their implementation of the knowledge processes. The researcher used the case-study method to explore the importance of information systems in supporting the implementation of knowledge management at the university. Moreover, the study has used the questionnaire as a tool for collecting information and obtaining feedbacks from the administrators at the university, and a random sample was chosen to identify the study community. The study resulted that there is a statistical indication of the importance and degree of the use of electronic systems in the university by the administrators. The study sample members believe that the university is keen to provide information systems, where systems analyze data and convert them into knowledge information that benefits the senior management at the university. Members of the study sample emphasize the importance of electronic information systems at the university, which in turn saves time and effort in extracting information, reports, statistics and providing them easily to senior management. The study also concluded with some recommendations, such as emphasizing the importance of knowledge management as one of its top priorities, spreading the knowledge culture, instilling a vision of knowledge among individuals, and emphasizing the importance of information systems.

• Journal of Korean Ophthalmic Optics Society
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• v.12 no.3
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• pp.35-38
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• 2007

This study surveyed on eye size, face types and glasses wears of normal 100 young peoples from 20 to 30 years old. The analysis of data resulted in as follows: 1. The vertical eye size were in case of below 2.4 mm (2%), 2.5-2.9 mm (40%), 3.0-3.5 mm (57%), and in case of high 3.6 mm (1%). 2. The horzontal eye size were in case of below 1.1 mm (52%), 1.2-1.4 mm (28%), 1.5-1.7 mm (18%), and in case of high 1.8 mm (2%). 3. As a whole, the face types were oval type (29%), round type (24%), square type (18%), and triangle type (2%). 4. As the male, the face types were oval type (32%), round type (10%), square type (26%), and triangle type (32%). 5. As the female, the face types were oval type (18%), round type (40%), square type (12%), and triangle type (30%). 6. As a whole, the FPD size were in case of larger than PD (49%), in case of suitable (25%), in case of smaller than PD (49%). 7. As the male, the FPD size were in case of larger than PD (28%), in case of suitable (36%), and in case of smaller than PD (32%). 8. As the female, the FPD size were in case of larger than PD (44%), in case of suitable (26%), and in case of smaller than PD (30%).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.4
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• pp.1520-1527
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• 2010

The purpose of this study was to confirm the effect by case management and durability of the effect, which targeted on the 115(51 men and 64 women) people who had undergone diabetes case management through the National Health Insurance Corporation from May 1. 2007 to June 30. 2007. In order to evaluate the effect of case management and durability, the study was examined just before the case management, right after case management, after 6 months and after 12 months through classifying case management 1(Group I) and case management 2(Group II). As a result, the participants' blood glucose level in the diabetes case management improved just after the case management compare to just before one. but it had a tendency to increase once more after 6 months and 12 months case management. In addition, it was confirmed to maintain the effect by the case management in Group II compare to Group I.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.5
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• pp.1912-1920
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• 2010

The purpose of this study was to confirm the effect by case management program and durability of the effect, which targeted on the 250(101 men and 149 women) people who had undergone hypertensive patients case management program through the National Health Insurance Corporation from May 1. 2007 to June 30. 2007. In order to evaluate the effect of case management and durability, the study was examined just before the case management, right after case management, after 6 months and after 12 months through classifying case management 1(Group I) and case management 2(Group II). As a result, the participants' blood pressure level in the hypertensive patients case management improved just after the case management compare to just before one. but it had a tendency to increase once more after 6 months and 12 months case management. In addition, it was confirmed to maintain the effect by the case management in Group II compare to Group I.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.8
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• pp.4815-4820
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• 2014

As semiconductor chips are on a small scale, large content and high integratation, it is essential to develop the device of pick and place at the system of the semiconductor test handler to ensure its high precision and durability. In this study, inspection equipment frame model of a semiconductor test handler picker was investigated by vibration analysis with the property of the natural frequency and harmonic response. As 3 kinds of analysis case models, the device of pick and place was located at the left side (Case 1), the center (Case 2) and the right side (Case 3) of the upper guideline. The range of natural frequencies until the 6th order on this frame model ranges from 80Hz to 500Hz. As the analysis of the harmonic response when the frame is resonant, Case 2 showed the maximum equivalent stress of 52.802 MPa more than Cases 1 or 3. Case 2 was the most intensive among the three cases. Using the analysis result of this study, the design of the frame model, which can be applied to the safe working environment of the system is believed to be possible.

• Journal of the Korean Institute of Gas
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• v.24 no.4
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• pp.62-72
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• 2020

This study presents a methodology of history matching to evaluate the productivity of shale gas reservoir with high reliability and predict future production rate in the Horn-River basin, Canada. Sensitivity analysis was performed to analyze the effect of physical properties of shale gas reservoir on productivity. Based on the results, reservoir properties were classified into 4 cases and history matching were performed considering the classified 4 cases as objective function. The blind test was conducted using additional field production data for 3 years after the history matching period. The error of gas production rate in Case 1(all reservoir parameters), Case 2(influenced parameters for productivity), Case 3(controllable parameters), and Case 4(uncontrollable parameters) were 7.67%, 7.13%, 17.54%, and 10.04%, respectively. This means that it seems to be effective to consider all reservoir parameters in early period for 4 years but Case 2 which considered influenced parameters for productivity shows the highest reliability in predicting future production. The estimated ultimate recovery (EUR) of production well predicted using the Case 2 model was estimated to be 17.24 Bcf by December 2030 and the recovery factor compared to original gas in place (OGIP) was 32.2%.

• Journal of Preventive Medicine and Public Health
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• v.42 no.6
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• pp.343-348
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• 2009

The final decision of study design in molecular and genetic epidemiology is usually a compromise between the research study aims and a number of logistical and ethical barriers that may limit the feasibility of the study or the interpretation of results. Although biomarker measurements may improve exposure or disease assessments, it is necessary to address the possibility that biomarker measurement inserts additional sources of misclassification and confounding that may lead to inconsistencies across the research literature. Studies targeting multi-causal diseases and investigating gene-environment interactions must not only meet the needs of a traditional epidemiologic study but also the needs of the biomarker investigation. This paper is intended to highlight the major issues that need to be considered when developing an epidemiologic study utilizing biomarkers. These issues covers from molecular and genetic epidemiology (MGE) study designs including cross-sectional, cohort, case-control, clinical trials, nested case-control, and case-only studies to matching the study design to the MGE research goals. This review summarizes logistical barriers and the most common epidemiological study designs most relevant to MGE and describes the strengths and limitations of each approach in the context of common MGE research aims to meet specific MEG objectives.

• Human Ecology Research
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• v.62 no.1
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• pp.137-149
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• 2024

This study aims to understand the experiences of highly educated married immigrant women from China, who hold a master's degree or higher, when selecting an elementary school for their children and to explore the significance of that experience. This study included eight participants, all of whom were married immigrant women who had resided in Korea for a minimum of five years. Data was collected through in-depth interviews, which were conducted over approximately one year, from June 2022 to August 2023. The study was approached as a case study. As a result of this study, the similarities between the cases were "choices based on charactercentered education and cultural convergence", "choices for the child's future and career", and "choices influenced by the primary caregiver's use of bilingualism". The differences observed in the cases appeared in "choices based on the balance between global education ideals and economic realities", "choices based on specialized curriculum content", and "choices based on connections to higher-level schools". This study is important, as it underscores the need to conduct various research initiatives on multinational immigrant women and their children. These findings suggest that the study can contribute to the development of multicultural policies that are grounded in the actual experiences and critical awareness of married Chinese immigrant women, who constitute a substantial part of Korean society.

• Journal of Korean Public Health Nursing
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• v.34 no.1
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• pp.112-124
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• 2020

Purpose: This study aimed to explore the perception of medical aid beneficiaries on their experiences of receiving case management. Methods: Data were collected through in-depth interviews with sixteen medical aid beneficiaries who had been receiving medical aid case management from at least one year ago. The data were analyzed using the NVivo software program for its qualitative content analysis. Results: Three categories emerged from the data: "not perceived but come into my territory", "realized the necessity of changes and begin to take care of my own health", and "satisfied passively with some of my changes." With respect to these categories, eight sub-categories were ultimately identified. Conclusion: It would be effective if both medical aid beneficiaries and case managers can set the case management goals and management plans together at the beginning of case management. It is also needed to develop a comprehensive case management model tailored to the characteristics and needs of the beneficiaries.

• Tribology and Lubricants
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• v.32 no.1
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• pp.18-23
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• 2016

The effective case depth for case-hardened rolling bearing has been discussed. For this purpose, rolling contact fatigue tests for ball bearings built with inner race of various hardness values were conducted until L₁₀ calculating rating life using a bearing life test machine under radial loading. Then, the distribution of residual stress below the inner raceway, which depended on the hardness value, was measured by X-ray diffraction. As a result, the linear relationship was established between the hardness value of the inner race and the theoretical shear stress evaluated at the depth where the residual stress disappeared below the inner raceway. Based on the relationship, it could be found that the factor of safety in bearing manufacturer’s rules for the effective case depth of case hardened rolling bearings was set higher. However, it could be also found that the hardness values at the depth where the maximum shearing stress acted below the raceway surface in a tapered roller bearing hardened by the carburizing process, were not sufficient for preventing plastic deformation under the basic dynamic load rating. Consequently, further efforts were still required to reduce or to disperse the contact load on the material design of a rolling bearing in order to prolong its life.