• Journal of KIISE:Computing Practices and Letters
• /
• v.16 no.7
• /
• pp.775-787
• /
• 2010

Unlike general-purpose CPUs, the GPUs have been specialized as many-core streaming processors, and are frequently replacing the CPUs in an increasing range of computations thanks to their outstanding parallel computing capacity. In order to respond to such trend, NVIDIA has recently issued a new parallel computing architecture called CUDA(Compute Unified Device Architecture), offering a flexible GPU programming environment for GPGPU(General Purpose GPU) computing. In general, when programmers use the CUDA API, they should clearly understand many aspects of GPU's computing architecture to produce efficient parallel software. In this article, we explain several optimization techniques for CUDA programming that we have verified through a lot of experiment and trial and error, and review how those techniques affect the performance of code execution. In particular, we use a specific problem as an example to analyze several elements that affect performances, such as effective accesses to hierarchical memory system, processor occupancy, and latency hiding. In conclusion, we present several directions that may be utilized effectively in CUDA-based parallel programming.

• Journal of Cadastre & Land InformatiX
• /
• v.47 no.1
• /
• pp.225-236
• /
• 2017

In this study, collecting data in real retail-premium market and the influencing factors were extracted explored the formation of retail-premium. This should identify the level of retail-premium through an objective estimate of expenses, revenues, etc. A hierarchical regression analysis was conducted focusing on how the operating profit affected the formation of retail-premium. Store operators will have to be accompanied by the management of the operating profit to keep the initial payment and in order to receive a raise retail-premium. Through this process, It is possible to prevent the gap between retail-premium calculated through the appraisal and market practices. Ultimately, I believe and achieve the objective, transparent, the advancement of retail-premium market.

• The Journal of Information Systems
• /
• v.13 no.1
• /
• pp.77-95
• /
• 2004

According to the increase of organizational complexity and the change of rapid information technology environment, many firms have shifted their information technology(IT) strategy from developing information systems in-house to purchasing application software such as Enterprise Resource Planning(ERP) Systems. Marketing and Sales functions within a Korean automotive part company include developing new assembly products, determining pricing, taking customer's orders, and shipping assembly products to customers. Marketing and Sales Information System(MSIS) in ERP system plays an important role in next Production Planning process. MSIS also makes management reporting and decision making faster and more uniform throughout an organization. MSIS promotes thinking about corporate goals, as opposed to thinking only about the goals of a single department or functional area. This paper intends to design and implement a MSIS in ERP systems for Korean automotive part company using object-oriented methodology In order to accomplish the implementation of MSIS in ERP system, we employed UML as its standard modeling language. In this study, four diagramming techniques such as use case diagram, sequence diagram, class diagram, component diagram among eight modeling techniques are used for analyzing hierarchical business process. In traditional marketing and sales function, a company with an unintegrated information system can have marketing and sales data that is data redundant or inaccurate. MSIS integrated in ERP system can solve the sales forecast problem, which minimizes the total costs of production, inventory, and transportation under constraints of production capacity. Also, the use of UML methodology makes S/W programmers shorten the phase of analysis and design in the implementation of MSIS system, and increase the reuse of software and the interoperability with corporate internal Information system.

• Journal of Digital Convergence
• /
• v.16 no.3
• /
• pp.385-394
• /
• 2018

The purpose of this study was to examine the effects of hospital organizational culture, organizational silence and job complexity on turnover intention in nurses working in general hospitals. The subjects were 152 nurses working at general hospitals. Data were collected from April 19, 2017 to April 30, 2017, and statistical analysis was analyzed by hierarchical multiple regression analysis using the SPSS/WIN 22.0 program. As a result of the research, turnover intention showed a positive correlation with resignation and defensive silence, whereas there was negative correlation between consensual organizational culture, sacrifice, suitability and connection of job inclination. The factors affecting the turnover intention were the present work experience, defensive silence, sacrifice, and the explanatory power of turnover intention was 47%. Therefore, in order to lower the turnover intention, it will be necessary to provide various programs to change the communication pattern in the nursing organization, and to provide differentiated welfare system.

• Korea Journal of Hospital Management
• /
• v.18 no.3
• /
• pp.1-26
• /
• 2013

To improve the competitiveness of the hospital provides high quality medical services in a hospital coordinator role is emphasized. This study on customer orientation of the role ambiguity in order to identify the impact of degree of customer orientation were analyzed for demographic differences. Dependent variable, customer orientation affects role ambiguity as independent variables, and regression analysis were set. And the control variables are set to support situational factors, customer orientation on the role ambiguity and hierarchical regression analysis was performed. Obtained through empirical results are as follows: First, according to the demographic characteristics of the hospital coordinator customer orientation, the difference between gender and medical subjects are not shown. Age, education, work experience, job title, and the hospital on the pattern of customer orientation has shown a difference. Second, according to the hospital coordinator role ambiguity about its impact on customer orientation analysis can be a role implementation, job implementation, opinion communication in achieving customer orientation was negatively affected. Third, role ambiguity, and customer orientation factors for the moderating effects of organizational support for the role of customer orientation can role implementation, job implementation, opinion communication was a statistically significant. Fourth, the role ambiguity factors and customer orientation for the administrative support for the moderating effect of customer orientation and role implementation is significant, but job implementation, opinion communication were statistically significant. Fifth, the role ambiguity factors and customer support for customer orientation and customer orientation for the moderating effects of role performance and the opinion communication was not statistically significant. However, job implementation was statistically significant. The limitations of this study are as follows: First, role ambiguity, situational factors and support due to limitations of the variable factors that may affect the customer orientation of a number of factors were excluded. So many exogenous variables in the measurement process can affect. Second, the variables measured as problems of self-assessment by the variable measuring the respondent's bias may occur. Third, This study is difficult to generalize. In other words, several areas of the province conducted by the empirical results of the survey as a limit on the overall generalization can follow.

• Journal of the Korean Home Economics Association
• /
• v.51 no.2
• /
• pp.195-206
• /
• 2013

This study was conducted in order to investigate the variables that relate and affect the internalizing and externalizing problems of multicultural children. 159 multicultural children in the $3^{rd}{\sim}6^{th}$grade were selected from elementary schools in Gwangju and the Jeollanamdo area. The data was analyzed by using the frequency, Cronbach's ${\alpha}$, t-test, ANOVA, Pearson's correlation and hierarchical regression by SPSS 12.0 program. The results were as follows: first, the internalizing problems were different according to the socio-demographic variable: (gender, subjective economic level), multicultural characteristic variable: (mother's communication ability, likability of mother's nationality, etc.), parent-child relationship variable: (relationship with mother, relationship with father) and social support variable: (peer support, teacher support). Further, the externalizing problems were different according to the socio-demographic variable: (gender), multicultural characteristic variable: (mother's nationality, mother's communication ability, etc.), parent-child relationship variable: (relationship with mother, relationship with father) and social support variable: (peer support, teacher support). Second, the influential variables regarding the internalizing problems were children's stress from cultural adaptability and the likability of the mother's nationality of the multicultural characteristic variable group, peer support of the social support variable group and the subjective economic-level of the socio-demographic variable group. Moreover, the influential variable on the externalizing problems was children's stress from the cultural adaptability of the multicultural characteristic variable group. The most influential variable of such variables was children's stress from cultural adaptability of the multicultural characteristic variable group. The results of this study will provide information for the development of educational and therapeutic intervention program for multicultural children.

• Journal of Acupuncture Research
• /
• v.24 no.4
• /
• pp.13-23
• /
• 2007

Objectives : The aim of the present study was to assess the effects of Sa-am acupuncture (Damjeonggyeok) on autonomic nervous system in night nurses by heart rate variability. Methods : Five night nurses were divided into two groups. We checked their HRV once after sleeping for night and 5 times after working for night, 4 times after operation. We operate Sa-am acupuncture (Damjeonggyeok) and sham acupuncture twice by turns for group A and in reverse order for group B. We checked responses of HRV change after operations. Statistical analysis was performed by using the SPSS Win. Ver. 13.0 for analysis about correlation between data, and Baysian analysis using WinBUGS(Ver. 1.4) for comparison between Sa-am acupuncture (Damjeonggyeok) and sham acupuncture. Results : The median overall decrease for difference in responses of low-frequency power in normalized units (LF (NU)) was -16.56 (-28.88, -6.446), the median overall increase for difference in responses to high-frequency power in normalized units (HF (NU)) was 16.25 (8.104, 28.6) and for the median overall decrease for difference in responses to the ratio of low- to high-frequency power (LF/HF) was -1.846 (-3.922, -0.069), 95% credibility intervals being shown in brackets. VAS of stress was correlated with LF (NU) and HF (NU), LF/HF (p<0.0l). Conclusion : Sa-am acupuncture (Damjeonggyeok) might have sympatholytic and parasympathomimetic effects.

• Journal of Global Scholars of Marketing Science
• /
• v.16 no.1
• /
• pp.45-71
• /
• 2006

Questionnaire data of 287 patrons of Tesco's Homeplus, Carrefour, Ermart, and Wal-rnart in the northern Daegu, Korea, using a structural equation model, were analyzed to investigate the hierarchical effects of values on discount store re-patronage intention as a measure of store loyalty, mediated by customers' evaluations of store associations. It was revealed that while customers' social affiliation value has a positive effect on store atmosphere evaluation, customers' self-actualization value has a positive impact on both after-sale service and employee services. It was also revealed that three associations such as access to a store, interior design, and employee services in their descending order have strong positive influences on the formation of customers' re-patronage intention. Theoretical and managerial implications are discussed in the conclusion.

• Culinary science and hospitality research
• /
• v.22 no.8
• /
• pp.157-171
• /
• 2016

The purpose of this study was to investigate the effect of educational environment on job on the educational satisfaction and recommendation toward the educational service among the students who are major in cooking and confectionery bakery in Busan area. In addition, current student conducted to perform the moderating effect of part-time condition. In order to achieve the purpose of current study total 299 students of 2-year college students were employed and it was educational statistically analysed using SPSS 20.0 program. Three-step hierarchical regression analysis was employed to check whether the major part-time job experience had a moderating impact or not. The results showed that there was a positive correlation between the educational environment and educational satisfaction, and the adjustment effect was partially adopted in the educational environment. Eurthermore, the part-time condition has positive influence on the relationship between environmental element and educational1 satisfaction, so the moderating effect was verified. These results will be contributed to provide marketing strategy to improve the educational environment service for students as well as related foodservice industry.

• Journal of agricultural medicine and community health
• /
• v.45 no.1
• /
• pp.1-12
• /
• 2020

Purpose: The purpose of this study was to examine the mediating effects of depression on relationship between sense of loss and suicidal ideation among Rural Elders use Primary Health Care Post's Services. Methods: This study was conducted using a descriptive survey design. Participants were 345 rural elders use Primary Health Care Post's Services in Jeollanam-do. Data were collected from August 1 to 31, 2017 using self-report questionnaires. Data were analyzed using descriptive statistics, Pearson's correlation coefficient, hierarchical regression and Sobel test with SPSS 21.0. Results: There were significant positive correlations between sense of loss, depression and suicidal ideation. It was found that physical loss is very high and significantly different only subjective health status on suicidal ideation. Also, Depression partially mediated the relationship between sense of loss and suicidal ideation of Rural Elders. Addtionally, The results show that depression plays a key role in suicidal ideation of Rural Elders. Conclusions: Based on the present findings, nursing interventions should be developed to decrease depression, with additional consideration towards sense of loss, specially physical loss, in order to prevent suicidal ideation among Rural Elders use Primary Health Care Post's Services.