• IE interfaces
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• v.24 no.1
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• pp.1-7
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• 2011

The purpose of this research was to develop an integrated interface for the usability test of systems or products in the design process. It is capable of automatically creating GOMS models which can predict human task performances. It can generate GOMS models to be interacted with the prototype interfaces. It can also effectively manage various design information and various usability test results to be implemented into the new product and/or system design. Thus we can perform usability test for products or system prototypes more effectively and also reduce time and effort required for this test. For usability tests, we established an integrated interface based on GOMS model by the LabVIEW program. We constructed the system that the linkage to GOMS model is available. Using this integrated interface, the menu structure of mobile phone can be constructed easily. User can design a depth and a breath that he want. The size of button and the label of the button is changable. The path to the goal can be defined by the user. Using a designed menu structure, the experiment could be performed. The results of GOMS model and the actual time are presented. Besides, values of operators of GOMS model can be defined as the value that user wants. Using the integrated interface that we developed, the optimal menu structure deducted. The menu structure that user wants can be established easily. The optimal layout and button size can be decided by comparison of numerous menu structures. User can choose the method of usability test among GOMS model and empirical data. Using this integrated interface, the time and costs can be saved and the optimal menu structure can be found easily.

• English Language & Literature Teaching
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• v.18 no.1
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• pp.133-151
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• 2012

This study investigates Korean university students' perception of TOEIC courses taught by Korean and native English teachers and test results in an effort to identify better methodologies to teach TOEIC. To find out the student's perceptions of TOEIC classes, a survey was conducted. The one hundred sixty students who attended the TOEIC courses participated in a questionnaire survey at the end of the semester. Based on a survey of students' assumptions toward TOEIC classes and teachers, this paper discusses the skills students feel important to improve their TOEIC scores and what their actual scores show. The research questions were: 1) what are some of the benefits of having a Korean or native English teacher for TOEIC courses? 2) what are some of the drawbacks of having a Korean or native English teacher for TOEIC courses? The results indicated that Korean and native English teachers have an equal chance to become successful teachers, but the methods used by the two groups are not the same in the context of teaching TOEIC courses; in the short term, direct test preparation, dictation and repetition by Korean or native teachers might be good methods for TOEIC courses, however, in the long term, conversation and discussion performed by native teachers may affect scores in a positive way.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.1491-1495
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• 2004

For the evaluation of the mobile robot performance in complex environments, the experimental approach in an actual physical environment has been commonly taken. In the physical experimental approach, however, it is quite difficult to define the proper environment for the evaluation due to the lack of commonly agreed characteristics of the test environment. Particularly the number of combinations of types and physical parameters of the obstacles that the mobile robot is expected to deal with is practically unlimited. In an effort to simplify and improve the effectiveness of the evaluation process, we propose an evaluation method using decomposed environmental elements, where we evaluated the performance of the robot for a small group of simple and decomposed obstacle components, for examples projection and slope, instead of a large group of complicated random obstacles. The paper describes a set of simple obstacle models and performance parameters that we have chosen for the effective evaluation process. As an alternative to the physical experimental evaluation approach, in this paper, we used a virtual evaluation environment where the robot and the physical test environment has been modeled using a commercial multi-body dynamics analysis packaged called RecurDyn.

• Journal of Korean Academy of Nursing Administration
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• v.13 no.1
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• pp.32-39
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• 2007

Purpose: This study is conducted to compare and analyse the health status and job satisfaction of nurses. Method: The subjects were a group of 90 nurses on fixed day nurse and the other group of 100nurses on night nurse. The collected data were analysed by using the SPSS WIN(10.0) program for descriptive statistics, t-test, ${\chi}^2-test$, ANOVA, and Pearson correlation coefficient. Result: There was a significant difference according to years in services. In nurses on day shift, there was a inverse correlation between the health status and job satisfaction. And in nurses on day shift, job satisfaction levels differed significantly depending on personality, satisfaction to pay, and current health status. In nurses on night shift, nurses' job satisfaction levels differed significantly depending satisfaction to pay. Conclusion: It was confirmed that health of nurses is greatly affected by shift work. so, it is very important to maintain and promote their health status in nurses on night shift. We must find out the factors that greatly affect health of nurses, and continuously make an effort to improve the working environment.

• The Journal of Fisheries Business Administration
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• v.46 no.2
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• pp.31-41
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• 2015

This study aimed to analyze the relationship between sea surface temperature as a climatic element and catch amount of offshore and coastal fisheries in Korea using annual time series data from 1970 to 2013. It also tried to predict the future changes in catch amount of fisheries by climate change. Time series data on variables were estimated to be non-stationary from unit root tests, but one long-term equilibrium relation between variables was found from a cointegration test. The result of Granger causality test indicated that the sea surface temperature would cause directly changes in catch amount of offshore and coastal fisheries. The result of regression analysis on sea surface temperature and catch amount showed that the sea surface temperature would have negative impacts on the catch amount of offshore and coastal fisheries. Therefore, if the sea surface temperature would increase, all other things including the current level of fishing effort being equal, the catch amount of offshore and coastal fisheries was predicted to decrease.

• Culinary science and hospitality research
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• v.8 no.3
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• pp.187-211
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• 2002

The purpose of this study was to examine the personality change of rooks that would possibly result from kitchen environment. It's basically meant to determine the relationship of environment to personality, by investigating how cooks felt about their own personality before and after working as a cook and conducting a self-diagnostic personality test based on theories on kitchen environment and personality. The subjects in this study were the cooks who served af top-rated hotels in Seoul, and the survey was carried out from April 8 through 12, 2002. The collected data were encoded and analyzed with SPSS 10.0 program. To identify the characteristics of the subjects, frequency analysis was implemented, and reliability analysis, T-test and ANOVA were employee. To verify the reliability of the questionnaire items, Cronbach's Alpha that represented internal consistency was calculated, and factor analysis was fulfilled to minimize related variables about cuisine environment and eliminate irrelevant ones. The findings of this study were as below: Out of total 27 cuisine environment variables, 22 ones boiled down to six factors. Factor 1 was conflicts, and factor 2 was job performance. Factor 3 was work, and factor 4 was environment. Factor 5 was facilities, and factor 6 was social. To make better cuisine environment each and every part of kitchen environment that affects cook personality should be improved, and further, what causes employee turnover should be eliminated. In the future, there is a need for broader research effort that could cover more extensive region and a wider variety of subjects other than cooks at the top-rated hotels.

• Transactions of the Korean Society of Automotive Engineers
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• v.22 no.6
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• pp.113-119
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• 2014

For the robust design of Motor Driven Power Steering (MDPS) systems, it is important to consider energy efficiency from every aspect such as system configuration and current flow, etc. If design optimization is not considered, it has many problems on a vehicle. For example, when evaluating steering test, particularly the Catch-up test which turning the steering wheel left or right quickly, steering effort should be increased rapidly. Also a vehicle might have poor fuel efficiency. In this study, it is calculated energy consumption for each component of the steering system and analyzed factors of energy consumption. As a result, this paper redefines a method to estimate steering input torque using characteristics of vehicle electric components and then conducts an analysis of contribution for the Catch-up.

• Journal of the Korean Society for Railway
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• v.8 no.4
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• pp.354-360
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• 2005

The railway track and the substructures constructed in the field test section of Kyongbu High Speed Line are the structures for HSL, for the first time designed and constructed by domestic technical group. It is very important to verify the local design criteria and specifications for these structures and also to assure the recordings for vibration or deflection produced on the essential parts of the structures. The study to verify the high-speed railway track performance and to ensure the run in safety on the track in curved section during the KTX run. Finally, the conclusion are drawn as follows. The measuring values of the deflection effort of the rail and displacement for verifying the track performance in the field test section of Kyoungbu HSL satisfy the criteria of the foreign countries (Japan and Germany). The measured value for the wheel load and the presumed value show the consistent tendency. The wheel loads of the exterior and interior of the rails at the speed superior to 300km/h are measured same. Finally, the comparison between the theoretical value presented during the verification of the derailment to evaluate the safety of the train run at the time of the detailed design of the track and the measured value in the field shows that the correct design of track structure was applied.

• The Journal of Korean Society for School & Community Health Education
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• v.13 no.2
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• pp.119-146
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• 2012

Objectives: The purposes of this study were to investigate the life satisfaction, obesity, depression, self esteem, body image of adolescents by their demographic characteristics, to analyze factors impacting on life satisfaction, and to provide basic data to intervention programs for bright and healthy development. Methods: The data in this study came from the Korea Youth Survey Data collected through questionnaires from 10,156 students. To investigate the causal relationship between each variable presented in the research model, descriptive statistics, t-test, ANOVA, Scheffe's test, correlation analysis, hierarchical regression analysis were carried out by using SPSS Ver. 18.0. Results: The most impacting factor on adolescents' life satisfaction were the self-esteem and depression, followed by the economic level, regular exercise, and regular eating. In conclusion, the strongest factors that influenced adolescents' life satisfaction were self-esteem and depression. Also we found that regular eating, regular exercise, and adequate sleep were the important causes of raising adolescents' life satisfaction. Conclusions: In order to enhance the adolescents' life satisfaction, we should make an effort to increase self-esteem, to prevent obesity, and to reduce depression through regular exercise and eating, adequate sleep. Therefore, it is important to recognize the importance of regular exercise and eating through health education. In addition, it is needed desperately to develop sleeping education program and to efforts to ensure sleeping right of adolescents.

• Korea Journal of Hospital Management
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• v.17 no.4
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• pp.71-86
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• 2012

The study was a descriptive research to investigate the effect of job satisfaction and self-leadership of members of small and middle-sized hospital on organizational commitment. Collection of data was conducted throughout members of small and middle-sized hospitals with explanation of purpose from 2011, Oct, 1st to 10th. Collected data was analyzed by T-test, ANOVA, Scheffe test and hierarchical regression analysis with utilizing SPSS Win 16.0. As a result of the expected effect, a degree of effect on organizational commitment has explanation 65.1%(F=183.804) on job satisfaction and self leadership. Also, it was job satisfaction that was found to be more effective, where explanation for it was ${\beta}$=.755 and self-leadership ${\beta}$=.264. With considering these facts, both factors are effective for organizational commitment. Therefore, to improve organizational commitment, it pays systemized strategies and ever more proactive efforts. To strengthen the self leadership, it needs changes in cultural aspects of hospitals to enlarge accessibility to information and opportunities for education and to expand freedom in their responsibility. Great effort on changing in cultural aspects of hospital would, based on effective interrelationship with members, improve efficacies of organization and efficiency of management.