• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.26 no.8
• /
• pp.1545-1551
• /
• 2002

The optical storage device has recently experienced significant improvement, especially for the aspects of high capacity and fast transfer rate. However, it is necessary to study a new shape of air bearing surface for the rotary type actuator because the optical storage device has the lower access time than that of HDD (Hard Disk Drives). In this study, we proposed the air bearing shape by using SA (Simulated Annealing) algorithm which is very effective to achieve the global optimum instead of many local optimums. The objective of optimization is to minimize the deviation in flying height from a target value 100nm. In addition, the pitch and roll angle should be maintained within the operation limits.

• Journal of Korean Public Health Nursing
• /
• v.28 no.3
• /
• pp.432-444
• /
• 2014

Purpose: This descriptive study was conducted in order to investigate the research trends of past nursing studies related to disasters in Korea, and to identify the direction of future research. Methods: Fifty studies conducted from July 1995 to June 2014 were analyzed according to general characteristics, disaster phase, disaster type, and research theme based on the four areas and 10 domains of the ICN Framework of Disaster Nursing Competencies. Results: The majority of studies were designed using quantitative methods (29). In disaster type, 12 studies explored natural disasters, and 14 explored manmade disasters. Disaster responders were the subject of 31 studies. In relation to research topics, the majority of studies were in the area of preparedness competencies of the ICN Framework (26). The studies were concentrated in the domain of education and preparedness (24). Conclusion: The total number of studies on disasters had increased over the years, while the topics failed to deal with all domains of the ICN Framework. The results indicate that the future direction of nursing research on disasters is to be vitalized through the flexibility of research design, systematic approach based on global perspectives, research on emergency responders and vulnerable people, and research relating to community-based disaster nursing.

• Earthquakes and Structures
• /
• v.5 no.5
• /
• pp.553-570
• /
• 2013

Using of masonry infill as partitions, in flat slab frame buildings is a common practice in many parts of the world. The infill is, generally, not considered in the design and the buildings are designed as bare frames. More of fundamental information in the effect of masomary infill on the seismic performance of RC building frames is in great demand for structural engineers. Therefore the main aim of this research is to evaluate the seismic performance of such buildings without (bare frame) and with various systems of the masonary infill. For this purpose, thirteen three dimensional models are chosen and analyzed by SAP2000 program. In this study the stress strain relation model proposed by Crisafulli for the hysteric behaviour of masonary subjected to cyclic loading is used. The results show that the nonstructural masonary infill can impart significant increase global strength and stiffness of such building frames and can enhance the seismic behaviour of flat slab frame building to large extent depending on infill wall system. As a result great deal of insight has been obtained on seismic response of such flat slab buildings which enable the structural engineer to determine the optimum position of infill wall between the columns.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.14 no.5
• /
• pp.2022-2042
• /
• 2020

This research aims to contribute to the discipline of knowledge management (KM) in Higher Education (HE), and is conducted using the case of the study programme (SP) for Integrated Academic Studies (IAS) of Technics and Informatics (TI). A deduction-induction methodology is applied, using a Plan-Do-Check-Act (PDCA) approach to design a suitable KM concept for making improvements to the SP IAS TI on the standardisation platform. Based on the application of the International Classification of Standards (ICS), the research analyses the correlations and competences acquired during the courses within the accredited TI study programme of two-course studies. On the basis of the results of a comparative analysis of the developmental learning process and educational goals, it is shown that knowledge management in correlation with standardisation leads to the improvement of study programmes in the upcoming accreditation cycle on the standardisation platform. Frequent innovations within standardised thematic fields (daily, weekly, monthly, etc.) indicate the need for appropriate changes to the SP. The contribution to KM is through an original analysis of annual samples of more than 90,000 standardised sources in correlation with the TI study programme. Expert System (ES) modelling and the original results enable an analogous contribution to the future KM of other SPs.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• v.28 no.3
• /
• pp.174-182
• /
• 2017

Objectives: This study was conducted in order to develop a computerized test to measure the level of mathematic achievement and related cognitive functions in children and adolescents in South Korea. Methods: The computerized Comprehensive Learning Test-Mathematic (CLT-M) consists of the whole number computation test, enumeration of dot group test, number line estimation test, numeral comparing test (magnitude/distance), rapid automatized naming test, digit span test, and working memory test. To obtain the necessary data and to investigate the reliability and validity of this test, 399 children and adolescents from kindergarten to middle school were recruited. Results: The internal consistency reliability of the CLT-M was high (Cronbach's alpha=0.76). Four factors explained 66.4% of the cumulative variances. In addition, the data for all of the CLT-M subtests were obtained. Conclusion: The computerized CLT-M can be used as a reliable and valid tool to evaluate the level of mathematical achievement and associated cognitive functions in Korean children and adolescents. This test can also be helpful to detect mathematical learning disabilities, including specific learning disorder with impairment in mathematics, in Korea.

• KIEAE Journal
• /
• v.11 no.6
• /
• pp.127-132
• /
• 2011

Since the late 20th century, countries of the world have made every effort to solve environmental problems due to global warming. The Korean Government has also made various efforts on reducing energy and $CO_2$ emission under the motto of "Low-Carbon Green Growth". In order to achieve the goal to reduce energy in the construction field, severe design standards and regulations on saving energy in new buildings have been established. However, for maximizing the reduction of energy in buildings, it is time to focus on deteriorated buildings where applications of energy saving designs and techniques have been insufficient. Especially, there are little guidelines and researches on reducing energy through remodeling at deteriorated school buildings which were built over 20 years ago. This paper suggests the priority of factors to reduce energy on the remodeling process at deteriorated school buildings using the AHP(Analytic Hierarchy Process) method. For applying the AHP method, the survey of staffs in the Education Offices and board members in the Korea Institute of Ecological Architecture and Environment was conducted via e-mail. As a result, factors of insulation, daylighting, system control, and windows turned out important in the energy reducing remodeling process at deteriorated school buildings, while factors of artificial lighting, solar heating, ventilation, and system did relatively unimportant.

• Journal of Distribution Science
• /
• v.17 no.9
• /
• pp.47-56
• /
• 2019

Purpose - A work way of 'face to face' or a work way of 'unmanned' is very meaningful trend in contrast of robot as a worker. This paper explored some cases of unmanned terminal and kiosk which has been quickly adopted to fastfood industry in South Korea and researched whether any inconvenience or trouble exists in the level of 'the poor' and 'the aged' or not at the time of 'touching' screen in unmanned store. Research design, data, and methodology -The authors examined a few previous studies in keywords of AmazonGo, kiosk, digital divide, information gap, deregulation, and analyzed some cases of 'unmanned terminal' defines restrictively as all kinds of unmanned device, terminal and equipment including kiosk regardless of any place and type. Results - Promotion strategy of the unhandy and retailers needs to offer 'expansion of education and learning', readiness for the law aspect, reform of kiosk industry and priority of sufficient budge and politic assistance by government side. Conclusions - This paper presented some strategies of eliminating 'digital divide' both for a 'the poor', 'the aged', and for a retailer, so that the former may easily purchase goods on unmanned terminal, and the latter may easily sell the more goods at unmanned store.

• The Korean Journal of Rehabilitation Nursing
• /
• v.16 no.2
• /
• pp.133-140
• /
• 2013

Purpose: The purpose of this study is to examine adolescents' knowledge and attitudes towards dementia and to provide basic data for educating about knowledge of dementia and strengthening positive attitudes towards dementia. Methods: This study used a descriptive research design. The subjects were 502 middle and high school students. A questionnaire organized by 16 questions of knowledge and 10 questions of attitudes towards dementia was used. Results: The subjects' knowledge level of dementia was low, and average score was $8.89{\pm}2.95$. The questions with low rate of correct answer were "Dementia is caused by several dozens of diseases such as internal medicine, neurology, psychiatry, etc.", "In spite of the dementia, patients can enjoy their favorite things." The subjects' average score of attitudes towards dementia was $3.72{\pm}0.58$. Questions of negative attitudes were "I don't want to be closed to patients of dementia.", "I watch information or prevention about dementia in mass communications media." The relationship between dementia-related knowledge and attitudes showed positive correlation. Conclusion: The result means the mediation is necessary for improving dementia-related knowledge and strengthening positive attitudes in adolescents. The education programs should be proceeded to provide adolescents with correct information about dementia.

• Korean Journal of Acupuncture
• /
• v.31 no.4
• /
• pp.158-167
• /
• 2014

Objectives : The results from randomized controlled trials on traditional medicine have been negative or ambiguous. The appropriateness of the research methodology started to be questioned. However, the research methodology appropriate for studying traditional medicine has not been well-established. This study aims to explore the appropriate research methodologies for clinical studies on acupuncture. Methods : Clinical researches evaluating the efficacy and effectiveness of acupuncture for back pain were systematically searched and evaluated focusing on research methodology. The acupuncture treatment protocol is evaluated by 9 items which is individual treatment based on diagnosis, combining proximal and distal acupoints, exact location of acupoint, De Qi, adequate stimulation, duration of acupuncture, treatment sessions, treatment interval, and establishing relationship between patients and doctors. Results : Systematic review of acupuncture researches on low back pain suggested that observational studies and pragmatic trials rather than explanatory studies could incorporate these elements. Qualitative studies also could help understanding complex characteristics of acupuncture treatment which could not be evaluated by quantitative studies. Conclusions : In designing clinical researches on acupuncture, various study designs, especially observational study and pragmatic study, should be considered according to research objectives and subjects. The efforts to incorporate the core characteristics of acupuncture practiced in everyday clinical setting are also essential.

• Fourth Industrial Review
• /
• v.1 no.1
• /
• pp.11-22
• /
• 2021

Purpose- The purpose of this study is to give implications on how to decrease employee turnover intention of Korean information and communication industry employees using organization culture, job satisfaction and organizational commitment. To do that this study analyzes relationships among variables and analyses mediating effect of job satisfaction and organizational commitment. Research design, data, and methodology- To analyze relationships among organization culture, job satisfaction, organizational commitment and turnover intention of employees, this study used the 7th KRIVET's HCCP employee data especially employees working in the information and communication industry who has more than university degree education. The analysis is conducted by using SPSS 21 and frequency analysis correlation analysis, regression analysis and mediating effect are analyzed by using MACRO PROCESS procedure for SPSS. Result- According to the empirical results, organization culture of innovation, relation and rational directed significantly affect both job satisfaction and organizational commitment. And job satisfaction and organizational commitment significantly affect each other. Turnover intention is significantly affected by job satisfaction, organizational commitment, innovation directed and hierarchy directed. However, the influence of innovation and hierarchy showed conflicting results. Conclusion- Based on this study result, implications to manage the turnover intention of Korean employees in the information and communication industry are discussed. Especially, the effect of organization culture, job satisfaction and organizational commitment is discussed. And the mediating role of job satisfaction and organizational commitment is also analyzed. Result implicates that cautious approach is needed in managing organization culture to employee attitude of job and organization is needed