• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.814-825
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• 2009

This paper is to analyze the relative weight and the priority order of the selection factors for IPTV. To obtain the goal this paper, firstly, the selecting factors for IPTV were identified and conceptualized on reviewing previous literatures. And this paper proposed the hierarchy model using the factor analysis on IPTV users. and utilized AHP in analysis method. Secondly, AHP model constructed 4 higher factors, and 15 lower factors. The higher factors were 'Quality Acceptance', 'Social Effect', 'Using Motive' and 'Individual Psychology'. Results of this study show that relative weights among factors IPTV selection were founded as 'Quality Acceptance(33.0%)', 'Utilization Motive(31.8%)', 'Individual Psychology(21.3%)' and 'Social Influence(13.9%)'. Economic efficiency takes the top rank in sub-criteria included 15 factors and than convenience, amount of information, discrimination, self-efficacy, innovation, relative advantage in order listed. For the generalization of the research results, further researchs are needed to investigate intended use of IPTV on other method of analysis.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2003.10a
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• pp.297-302
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• 2003

This study was carried out to check the contingency planning methods under the analysis of oil spill potential and make a guide line to apply the results to the port of Busan. The expected spilled oil drift patterns are considered with the most probable scenarios under the base of the oil spill potential. The results obtained from this study are as follows: (1) Analysis method of oil spill potent was proposed and the applicability was proved by the application example to the port of Busan to make the contingency plan. (2) Responsible oil spill contingency planning methods / flow are suggested considered environmental factors and the oil spill potential. (3) The coastal waters of Busan was consist of rocky flat, man-made solid shore and beach shore. Marine traffic have high density of oil tanker and cargo ship. Also, oil tanker ship are examined in the small ships to be less than 3000t to supply oil to the ship moored / anchored as well as the large amount of oil tank / basin are located along the coast of Busan port. These systems are introduced to make in put data to the analysis of oil spill potential. (4) According to the analysis of historical records of oil spill accident in Busan, the frequency of accidents by cargo ship rank highest and 45% of accidents is caused by carelessness. about 65% of total accidents shows a small spill accident of less than $10k{\ell}$.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.3
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• pp.1819-1823
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• 2013

Objective: Microarray data were analyzed to explore key genes and their functions in progression of colorectal cancer (CRC). Methods: Two microarray data sets were downloaded from Gene Expression Omnibus (GEO) database and differentially expressed genes (DEGs) were identified using corresponding packages of R. Functional enrichment analysis was performed with DAVID tools to uncover their biological functions. Results: 631 and 590 DEGs were obtained from the two data sets, respectively. A total of 32 common DEGs were then screened out with the rank product method. The significantly enriched GO terms included inflammatory response, response to wounding and response to drugs. Two interleukin-related domains were revealed in the domain analysis. KEGG pathway enrichment analysis showed that the PPAR signaling pathway and the renin-angiotensin system were enriched in the DEGs. Conclusions: Our study to systemically characterize gene expression changes in CRC with microarray technology revealed changes in a range of key genes, pathways and function modules. Their utility in diagnosis and treatment now require exploration.

• Journal of the Korean Dietetic Association
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• v.1 no.1
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• pp.79-88
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• 1995

The purposes of this study were to : a) investigate actual time spent and expected labor time spent on management activities, and b) develop standardized indices of dietetic staffing needs in employee foodservice. A job analysis questionnaires were developed and mailed to 65 dietitians who were members of The Korean Dietetic Association Practice Group, members with management responsibilities in employee foodservices. Completed questionnaires were received from 32 dietitians for a response rate of 49%. The questionnaire contained two parts with a total of 99 statements. Statistical data analysis was completed using the SAS programs for descriptive analysis, wilcoxon signed ranks test, wilcoxon rank sum test, and pearson correlation. The results of this study can be summarized as follows. 1. The actual time spent on management activities by dietitians in employee foodservice was 69.80 hours and expected labor time spent was 61.81 hours. And they were significantly different (p<0.05). 2. ILO allowance rate( 11%) was applied: The standardized working hours per week of dietitians working in employee foodservice with manufacturing and industrial plants, and office building were 79.61 and 64.25 respectively ; Staffing need indices were 1.81 and 1.46 respectively on the base of 44 working hours. 3. The average standardized working hours per week was 68.61 hours and staffing need indices was 1.56

• Journal of the Korean Dietetic Association
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• v.1 no.1
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• pp.66-78
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• 1995

The purposes of this study were to a) analyze the dietitian's job as a foodservice manager in employee foodservice, b) examine the performance and importance levels of management activities, c) determine factors affecting performance and importance levels of management activities. A job analysis questionnaires were developed and mailed to 65 dietitians who were members of The Korean Dietetic Association Practice Group, members with management responsibilities in employee foodservices. Completed questionnaires were received from 32 dietitians for a response rate of 49%. The questionnaire contained two parts with a total of 99 statements. Statistical data analysis was completed using the SAS programs for descriptive analysis, Wilcoxon signed ranks test, Wilcoxon rank sum test, and pearson correlation. The results of this study can be summarized as follows. 1. The average score of performance and importance levels on management activities were 3.11, 3.99 respectively. And they were significantly different(p<0.001). 2. The performance level was significantly correlated to working hours per week(r= .6598, p<.01), number of meals(r=.3934, p<.05) and foodcost(r=.5208, p<.05). 3. The importance level on management activities was significantly correlated to working hours per week(r=.6214, p<.05), number of meals(r= .4161, p<.05) and foodcost (r =.6920, p<.01).

• The Korean Journal of Applied Statistics
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• v.17 no.2
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• pp.205-218
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• 2004

Conjoint analysis is employed to decompose the consumer's preference judgements into the importance of attributes, and to predict the degree of preference for each profile of the products, services, or ideas. It has been widely used in industrial marketing, particularly in the areas of product positioning and new product development. This paper is mainly concerned with the conjoint analysis based on the Chebyshev estimation since the efficiency of the least squares estimator is lower than that of the Chebyshev estimator when the preferences are measured as the rank-order. A case study is performed on the preference for cellular phones. And it is shown that conjoint analysis based on the Chebyshev estimation is superior, in terms of the predictive validity, to one which is based on the least squares estimation.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.1
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• pp.95-100
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• 2016

Background: Survival time of lymphoma patients can be estimated with the help of microarray technology. In this study, with the use of iterative Bayesian Model Averaging (BMA) method, survival time of Mantle Cell Lymphoma patients (MCL) was estimated and in reference to the findings, patients were divided into two high-risk and low-risk groups. Materials and Methods: In this study, gene expression data of MCL patients were used in order to select a subset of genes for survival analysis with microarray data, using the iterative BMA method. To evaluate the performance of the method, patients were divided into high-risk and low-risk based on their scores. Performance prediction was investigated using the log-rank test. The bioconductor package "iterativeBMAsurv" was applied with R statistical software for classification and survival analysis. Results: In this study, 25 genes associated with survival for MCL patients were identified across 132 selected models. The maximum likelihood estimate coefficients of the selected genes and the posterior probabilities of the selected models were obtained from training data. Using this method, patients could be separated into high-risk and low-risk groups with high significance (p<0.001). Conclusions: The iterative BMA algorithm has high precision and ability for survival analysis. This method is capable of identifying a few predictive variables associated with survival, among many variables in a set of microarray data. Therefore, it can be used as a low-cost diagnostic tool in clinical research.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.10
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• pp.471-479
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• 2020

In this paper, we analyze features of radical innovative businesses using their patents. Although patents have been used to evaluate outcomes of businesses from the 1980s, it is challenging to use patents for radical innovations. We examined the possibility of taking advantage of patents for an indicator that represents a radical innovation in pharmaceutical industry. To this end, we collected FDA approval data from the U.S. Food and Drug Administration and patent data of 18 pharmaceutical companies. For analysis, we utilized the network centrality analysis and Wilcoxon signed ranked test, which is a non-parametric statistical hypothesis test used to compare two related samples. We observed that a radical innovative company typically cooperates with other research groups, such as universities and companies, and acts as a hub for connectivity in pharmaceuticals. Also, we found that there are differences in centrality between radical firms and non-radical firms. Thus, we expect that the results of this study will help in developing strategies for research and development of pharmaceutical companies and identifying factors affecting radical innovation in the future.

• Korean Journal of Plant Resources
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• v.15 no.1
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• pp.26-35
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• 2002

Abeliophyllum distichum Nakai (O1eaceae) is a monotype of Korea and is distinguished from related genus Forsythia Vahl by the morphological characters such as fruit shape, flower color and etc. Even though several intraspecific taxa were reported according to the color of flowers and shape of fruits, there have been many controversals on the taxonomic indentity and status of rank on those taxa. In the present study, we performed the RAPD analysis to delimit the infraspecific taxa of Abeliophyllum distichum and to investigate the genetic polymorphism and relationships among 12 populations. 212 scorable RAPD markers with 70 common markers were found from the PCR reactions with 16 random oligoprimers and were analyzed by Nei's genetic distance. From 0.108 to 0.321 of genetic variations were showed among the taxa. Some regional groups instead of same taxa were clustered from the phonogram of UPGMA analysis. Also, we could not find distinct lineage among intraspecific taxa. The result from RAPD analysis supported that the infraspecific taxa of Abeliophyllum distichum might be the individual variations and treated as the same taxa. RAPD analysis was very useful to confirm the high gene pool with diverse genetic polymorphism among Abeliophyllum distichum populations.

• 재활복지
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• v.18 no.4
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• pp.95-117
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• 2014

This study aims to examine the effects of personal assistance services(physical activity support, homemaking activity support, social activity support) on caregiver burden and determine whether family resilience(family belief system, family cohesion, interaction) has a moderating effect between personal assistance services and caregiver burden, thereby presenting a reference data which can be used to seek a practical measure for handicapped welfare. This study was conducted on 200 primary caregivers with disabled family members of rank 1 or 2 in east, west, south, and north Gyeonggi-do using personal assistance services. Data was collected in 2013 from April 1 to May 15, and was analyzed using the SPSS 19.0 statistics program in which a moderated multiple regression analysis based on exploratory factor analysis, confirmatory factor analysis, and hierarchical regression analysis was performed. The primary conclusions of this study were as follows; First, the use of physical activity support was showed to have a positive effect in reducing family burden related to disabled care. Second, personal assistance services exhibit significant moderator effects related to family burden in family belief systems and family cohesion.