• International Journal of Air-Conditioning and Refrigeration
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• v.11 no.2
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• pp.91-103
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• 2003

The objective of this study is to analyze and evaluate the impact of the stack effect in high-rise buildings for solving the various problems resulting from it. For the evaluation of the impacts on the stack effect, computer program simulations based on the network model were performed for a typical high-rise office building. The results of the simulations show that the impact caused by the stack effect is mainly dependent on building envelope air-tightness and internal air flow resistance. Therefore the problems due to the stack effect may be solved to some extent by installing vestibules around entrance doors and doors serving elevators, and by zoning the elevators.

• Bulletin of the Korean Chemical Society
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• v.35 no.4
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• pp.1057-1060
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• 2014

In our previous articles, an approach has been proposed for the evaluation of the uncertainty of overall result from multiple measurements. In the approach, uncertainty sources were classified into two groups: the first including those giving same 'systematic' effect on each individual measurement and the second including the others giving 'random' effect on each individual measurement and causing a variation among individual measurement results. The arithmetic mean of the replicated measurements is usually assigned as the value for the overall result. Uncertainty of the overall result is determined by separately evaluating and combining an overall uncertainty from sources of the 'systematic' effect and another overall uncertainty from sources of the 'random' effect. This conceptual approach has been widely adopted in chemical metrology society. In this study, further logical proof with more detailed mathematical expressions is provided on the approach.

• 한국벤처창업학회:학술대회논문집
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• 2007.04a
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• pp.79-99
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• 2007

This paper evaluates the economic effect of the IT SoC Industrial Foundation Composition Project. The evaluation was done in three steps. The first step was to estimate the contribution effect of the fabless small and medium venture business' sales. The step includes interview with all the CEOs of the firms under the support of the Enterprise Incubation System, The second step was to apply input-output analysis and then estimate the production inducement effect. The last step was to compare the results of estimation with the costs of the project. We have concluded this project had achieved 6.3 times greater economic effect compared to the budget. The reason for the large economic effect is that the project provided various infrastructures to the small and medium venture businesses.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.117-127
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• 2019

This study was done to analyze the relationship among the characteristic elements for a evaluation factor(design, function, quality, price, conveniency, personnel factor), the evaluation factor satisfaction, repurchase intention and recommend intention that the China cellular phone users perceived by group. The survey was divided into "design, function, quality, price, conveniency, personnel factor, repurchase intention and recommend intention". As a study result, every characteristic elements for a evaluation factor excepting price had an effect on independent variables such as design, function, quality, conveniency, personnel factor satisfaction. And all evaluation factors had an effect on repurchase and recommend intention. In conclusion, in order to increase the repurchase and recommend intention in China cellular phone market it would be necessary to improve the characteristic elements satisfaction for design, function and personnel factor. And after the design, function and personnel factor satisfaction were improved, we could improve the repurchase and recommend intention.

• Journal of Oral Medicine and Pain
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• v.41 no.2
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• pp.61-71
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• 2016

Purpose: This study was designed to evaluate the comparison between the subjective and the objective evaluation of pain control effect in masticatory muscle pain depending on time and dose change. Methods: The patients were recruited to this study and diagnosed according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Experimental group were divided into three groups; saline injection group (n=10), morphine 1.5 mg injection group (n=10), and morphine 3.0 mg injection group (n=10). Evaluation list was the subjective pain evaluation (visual analogue scale, McGill pain questionnaire) and the objective pain evaluation (pressure pain threshold [PPT], pressure pain tolerance [PTO]). The subjective and the objective pain evaluation were performed at the times of just before injection, 10 minutes, 30 minutes, 1 hour, 24 hours, and 48 hours after injection. Then, data were statistically analyzed. Results: The results were as follows: 1) There is no statistically significant difference between the results of the subjective and the objective pain evaluation with regard to the short-term (within 1 hour) analgesic effect of morphine sulfate. 2) However, after 1 hour of injection, while the subjective pain evaluation score still decreased, the objective pain evaluation didn't show significant changes in PPT and PTO (1 hour, p<0.05; 24 hours, p<0.01; 48 hours, p<0.001). 3) In comparison to changes in the dose, the McGill pain questionnaire was the most statistically effective method among the subjective pain evaluations (1.5 mg, p<0.05; 3 mg, p<0.01). Conclusions: Therefore, it was revealed that the subjective pain evaluation was more effective to evaluate long-term pain control, and that the McGill pain questionnaire could be an effective way to evaluate pain control depending on dose changes. It requires further investigations with time and dose extension.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.05a
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• pp.511-514
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• 2007

This study aims to derive the effect of road traffic noise perception by the visual and aural information through a laboratory experiment. To verify the result more precisely, ME(Magnitude Estimation) and SD(Semantic Differential Method) evaluation on the effect of visual and aural effect were carried out by 43 university students. As the result, up to 10% of psychological reduction effect was shown under the 65dB(A). As the noise level, it was analyzed that the vision affected about 7dB(A) and sound affected 5dB(A). However, if these two are given simultaneously, mainly sound affects to reduce the annoyance of noise and the vision next. Compared with the urban central circumstances, this effect(2dB(A) under 65dB(A) noise) was shown smaller than field test.

• Journal of Electrical Engineering and Technology
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• v.3 no.3
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• pp.346-353
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• 2008

This paper defines the concept of “protectability” for the performance evaluation of distance relay considering its sensitivity and selectivity. The paper starts from the probabilistic modeling of the errors, and based on this model, a detailed explanation of protectability calculation for each zone of the distance relay is presented. An effect of the Weighting Rate and the Measurement Deviation on the protectability evaluation is also given. By considering this effect, the optimization of relay setting can be realized. The proposed method is applied to a typical model system to show its effectiveness

• Proceedings of the Korean Reliability Society Conference
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• 2001.06a
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• pp.239-244
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• 2001

Today, Ultrasonic is used as an important non-destructive test tool of semiconductor reliability evaluation and failure analysis. The semiconductor packaging trend goes to develop thin package, this trend makes difficult to inspect to defect in semiconductor package. One of the important problem in all semiconductor is moisture absorption in the atmosphere. This moisture causes crack or delamination to package when the semiconductor package is soldered on PCB. Reliability evaluation of semiconductor's object is investigating the effect of this moisture. For that reason, this study is investigating the effect of this moisture and reliability evaluation of semiconductor after preconditioning test and scanning acoustic microscope.

• Journal of the Korean Institute of Educational Facilities
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• v.21 no.2
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• pp.33-39
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• 2014

In the case of low-rise buildings in seismic performance evaluation, lateral force resistance of the pillars affects the seismic performance of the building. Evaluation of the seismic performance of the column is determined by the holding performance is evaluated by comparing the shear strength and bending strength it was destroyed bylow intensity. In case of the school building, in order to install the large windows for ventilation and lighting of the partition walls are located between the pillars. The case of the pillars of these, shear failure occurs in the event of an earthquake is often, in the seismic performance evaluation, partition wall and the wall of the shim is evaluated ignoring, pillar of the general pillars If you have to calculate the results of the seismic performance distorted that are destroyed by bending behavior can be evaluated as often. Results of the study, when assessed by distinguishing the effective length of the column, it was found that when a seismic load is applied, it is possible to accurately predict the failure mode, reliable results of seismic performance evaluation of the school building.

• Journal of the East Asian Society of Dietary Life
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• v.25 no.2
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• pp.363-371
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• 2015

This study investigated the effect and interrelationship of evaluation system in employee's job satisfaction at deluxe hotel kitchen in the Seoul area. The questionnaires developed for this study were distributed to 400 chefs during June to August, 2012. A total of 364 questionnaires were used for analysis (91.0%) and the statistical analysis was completed using PASW (SPSS) 18. The status of operating menu evaluation and menu development was analyzed by dividing the questionnaires into three categories: 'menu idea', 'menu evaluator' and 'menu evaluation system'. The 'menu idea' category showed the highest concern for 'Is the selected idea differentiated from competitors' menu?' (3.10 Likert scale), the 'menu evaluator' category showed the highest concern for 'Do the evaluator's individual factors affect menu evaluation?' ($3.88{\pm}0.96$), and the 'menu evaluation system' showed the highest concern for 'Is the menu commercialized by the menu evaluation system?' (3.32 Likert scale). Overall job satisfaction was studied into three categories: 'human field', 'material field' and 'evaluation field'. Overall satisfaction about one's job was 3.24 Likert scale. For satisfaction in each category, satisfaction for 'human field' was the highest with 3.30 Likert scale compared to 'material field' and 'evaluation field' with 2.76 Likert scale and 3.27 Likert scale, respectively. In conclusion, establishment of a unified evaluation system to improve employee's job satisfaction related to menu development is needed.