• Journal of Korea Technology Innovation Society
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• v.3 no.3
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• pp.85-101
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• 2000

The purpose of this study is to test whether prices of personal computers reflect their varying degrees of non-marketable characteristics including after-sales service. This purpose is carried out using the hedonic price model. In this paper, we estimated 74 functional forms of hedonic price model using the quadratic Box-Cox transformation function and selected one based on the three criteria: expected signs, the statistical significance of estimated coefficients, and goodness of fit in terms of root-mean-square-percentage-error. In this study, we found hat as the after-sales service level increases the price of the personal computer increases. This result is consistent with the hypothesis that the less after-sales service offered with a personal computer, the less consumers are willing to pay for the personal computer, when all else remain constant. This finding shows that since the market works indirectly to influence pricing, the need to rely on consumer protection legislation to guarantee after-sales service is lessened. This study also found that after-sales service supported by each personal computer producer is not a free service, thus produces have a profit incentive for providing after-sales service.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.43
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• pp.75-97
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• 2009

Article 35 of the CISG defines standards for determining whether goods delivered by the seller conform to the contract in terms of type, quantity, quality, and packaging. When we apply these article 35(1), (2) of the CISG to the business connection, we will face several issues in the business connection. Fist, we will face the interpretation of contracts. When we interpret the contract, we must remember the article 8 of the CISG. Statements made by and other conduct of a party are to be interpreted according to the intent of parties. Therefore parties of contract must describe their intent correctly. Second, we must make out a contract in written about the promised contents. And it is needed to insert a merger clause in order to prevent part of contract from disagreeing with each other. Third, there are several interpretation of fitness for the purpose for which the goods would ordinarily be used. So it is important to describe the quality standard to be applied. If it does not describe the standard, it is helpful to apply the reasonable quality test. Fourth, there may be some doubt regarding the question of whose standard-that of the seller's or that of the buyer's state-is relevant in order to determine which characteristics the goods must have in order to be fit for their ordinary purpose. Ultimately, the question of the relevant standard is a matter of the interpretation of the contract.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.371-378
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• 2009

A lot of learning systems are applying and verify evaluating the item difficulty to increase learner's learning effect. But most of this methods ware calculated the item difficulty when it analyze the learning result before or after learning. So, it is hard to support learning contents with changing item difficulty during learning to learner. In this research, we proposed the method that system can support learning contents to next learning to fit leaner's level immediately as apply to calculate item difficulty during the proceed learning. Through this method, learner could supported learning contents by calculated difficulty through pre-test and it caused this method was helped learner to increase learning effect.

• Women's Health Nursing
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• v.22 no.4
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• pp.210-220
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• 2016

Purpose: The purpose of this study was to construct and test a structural equation modeling on the reproductive health behavior of single women with sexual experiences. This study employed Ajzen's Theory of Planned Behavior (TPB). Methods: The data were collected after receipt of consent from 250 single women with sexual experiences, and analyzed using SPSS 18.0 and AMOS 18.0. Results: Model fit indices for the hypothetical model were suitable for the recommended level: $x^2=362.407$, RMR=0.065, RMSEA=0.070, GFI=0.867. TLI=0.927, CFI=0.938, IFI=0.939, and $x^2/dF=2.237$. Intention showed direct effect with the biggest effect being on reproductive health behavior. Attitude, subjective norm and perceived behavioral control were found to have a direct effect on intention. Among them, perceived behavioral control revealed the largest influence. Conclusion: This study suggests that the TPB is a suitable model in explaining the reproductive health behavior of single women with sexual experience. Strategic plans for educational and intervention programs should be aimed to encourage single women to engage in reproductive health behavior.

• Korean Journal of Human Ecology
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• v.24 no.1
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• pp.111-122
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• 2015

The purpose of this study was to identify the shoes satisfaction and selection criteria according to women's BMI. Data was collected from 323 women in their 20-40's. Factor analysis, one-way ANOVA, Chi-square test, and multi regression analysis were done. Women were segmented into the under weight group, the regular weight group, and the over weight group according to their BMI. The factors of shoes selection criteria were fit and practicality, appearance, fashion and brand, materials and sewing, comfort and economy, and size. Generally most women were satisfied with the styles of shoes but dissatisfied with materials and size. The underweight group's foot was shorter and narrower, shoes was shorter and heel height was higher but the over weight group was opposite. The under weight group were satisfied with higher heel and comfort and practical shoes. The regular weight group were satisfied with higher heel and comfort and economy shoes but the over weight group was dissatisfied with higher heel and comfort and economy shoes.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.1
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• pp.259-268
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• 2020

The purpose of this study is to examine the predictive effects of intuition, business analytic, networking capabilities on innovation performance. The data was collected using a cross-sectional quantitative survey. A total of 292 useable responses were collected from Thai Processed Food Exporters (TPFE). The findings also indicated that the hypothesized relationships between the independent and dependent variables fit the empirical data. Specifically, it is revealed that strategic intuition, business analytic capabilities, network-based capabilities and dynamic capabilities had a direct effect on dynamic strategy. They also had statistically significant direct and indirect effects on dynamic performance. Based on the results of the correlation test, the researchers developed a dynamic capability model for the development of the dynamic performance of the operators, which included concepts, principles, methods, tools and guidelines. Furthermore, the impacts of intuition, business analytic, networking capabilities on dynamic strategy are also examined in this study. It makes a considerable contribution to the existing literature on dynamic strategy of TPFE, particularly in regards to explaining the performance.

• Transactions of Materials Processing
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• v.29 no.2
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• pp.76-88
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• 2020

The need for advanced high strength steel (AHSS) forming technology is increasing as interest in light weight and safe automobiles increases. Multipoint dieless forming (MDF) is a novel sheet metal forming technology that can create any desired longitudinal and transverse curvature in sheet metal. However, since the springback phenomenon becomes larger with high strength metal such as AHSS, predicting the required MDF to produce the exact desired curvature in two directions is more difficult. In this study, a prediction model using artificial neural network (ANN) was developed to predict the springback that occurs during AHSS forming through MDF. In order to verify the validity of model, a fit test was performed and the results were compared with the conventional regression model. The data required for training was obtained through simulation, then further random sample data was created to verify the prediction performance. The predicted results were compared with the simulation results. As a result of this comparison, it was found that the prediction of our ANN based model was more accurate than regression analysis. If a sufficient amount of data is used in training, the ANN model can play a major role in reducing the forming cost of high-strength steels.

• Journal of Welding and Joining
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• v.33 no.6
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• pp.13-20
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• 2015

Many automotive companies are endeavoring to improve the quality of resistance spot welding by updating body-in-white (BIW) production line with adaptive control spot welding system to compensate the process disturbances such as gap, electrode wear, oxidized surfaces, poor fit up and adhesive etc. Most of the commercial adaptive weld controllers require proper "Initial Welding Schedule" or "Reference weld" to achieve compensation in welding parameters during real time welding. In this study, the compensation of a commercial adaptive weld controller had been observed and analyzed thoroughly for various process disturbances to find optimal initial welding schedule. It was observed that 90 percent of the expulsion current in constant current control as reference welding schedule conferred the maximum button diameter in adaptive control welding. Finally, effects of each disturbance in combined field disturbances system with adaptive control had also been confirmed with the design of experiment (DOE) by minitab(R)16 for combined disturbances situation and suitability of optimum initial weld current had also established with real body part validation test.

• Journal of Korean Academy of Nursing
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• v.42 no.5
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• pp.699-708
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• 2012

Purpose: This study was designed to test structural equation modeling of the quality of life of pre-dialysis patients, in order to provide guidelines for the development of interventions and strategies to improve the quality of life of patients with Chronic Kidney Disease (CKD). Methods: Participants were patients who visited the nephrology outpatient department of a tertiary hospital located in Seoul. Data on demographic factors, social support, nutritional status, physical factors and biobehavioral factors and quality of life were collected between March 4 and March 31, 2011. Results: In the final analysis 208 patients were included. Of the patients 42% were in a malnourished state. Anxious or depressed patients accounted for 62.0%, 72.6%, respectively. Model fit indices for the hypothetical model were in good agreement with the recommended levels (GFI=.94 and CFI=.99). Quality of life in pre-dialysis patients with CKD was significantly affected by demographic factors, social support, nutritional status, physical factors and biobehavioral factors. Biobehavioral factors had the strongest and most direct influence on quality of life of patients with CKD. Conclusion: In order to improve the quality of life in pre-dialysis patients with CKD, comprehensive interventions are necessary to assess and manage biobehavioral factors, physical factors and nutritional status.

• Journal of Korean Academy of Nursing
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• v.47 no.1
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• pp.60-70
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• 2017

Purpose: This study was conducted to construct and test a structural equation model of health-related quality of life (HRQoL) among hospitalized patients with pulmonary tuberculosis (PTB). Methods: Participants were 256 patients with PTB who were 20 years or older and admitted in two national tuberculosis hospitals. The patients participated in pulmonary function testing and responded to structured questionaries. Results: The goodness-of-fit statistics of the final hypothetical model were as follows: ${\chi}^2/df=2.19$, RMSEA=.07, SRMR=.05, GFI=.95, NFI=.95, CFI=.96, TLI=.92, and PCFI=.52. Symptoms and general health perception had significant direct effects, and subjective economic status, social support and stigma had significant indirect effect on HRQoL of hospitalized patients with PTB. These variables explained 64% of variance in the prediction model. Conclusion: Findings suggest that strategies and intervention for physical symptoms and depressive symptoms are crucial to improve the quality of life in hospitalized patients with PTB. The development of various social support programs is also recommended.