• Journal of the Korean Society of Costume
• /
• v.33
• /
• pp.201-215
• /
• 1997

The purpose of this study was to investigate the actual state and problems of outlet stores. And examine store attributes shopping orientations information sources according to demographic characteristics for outlet store patronage group. The questionnaires were administered to 400 women living in Taegu. The data were analyzed by using Frequency Percentage Factor Analysis MANOVA. The results of the study were as follows; 1) Outlet stores in Taegu area were run as the type of agency and dealt in most brands of their own companies, There were plenty of as-sortment and merchandise. The discount rate was 50-60% Stores' locations were scattered which made shopping environment incon-venient. 2) The store attributes were composed of five factors such as fashion & products diver-sity service store reputation convenience and price. Shopping orientation were com-posed of six factors such as self-confidence for shopping brand oriented store loyalty & near-store oriented economical self-assumed shopping and difficulty of choice. Information sources were composed of four factors such as print media & display personal information advertising and store visit. 3) There were significant differences be-tween patronage group and non-patronage group in store reputation service fashion & products diversity. Patronage group is more satisfied with these three factors. There were significant differences between patronage group and non-patronage group in brand oriented and economical Non-patronage group was more brand oriented and patronage group was more economical. There were significant difference between patronage group and non-patronage group in print dedia & display factos. Non-patronage group made more use of print media& display than patronage group as information sources. There were significant differences between patronage group non-patrpnage group in age marital status and levle of education.

• Proceedings of the KIPE Conference
• /
• 2003.11a
• /
• pp.271-274
• /
• 2003

In this paper, compare and analyze existent MPPT algorithms. Existent algorithms have defects which don't generate it in a partial shade or low insolation. Therefore, to supplement it, we design improved IncCond algorithm consisted of a Aux. switch and capacitor with Generation Control circuit which can always obtain maximum generation power at the factor which is reduced generational efficiency by partial shade. Generation Control circuit is method which can always get maximum output power as it regularly controls each voltage of serial connected solar cell. Accordingly, it can improve efficiency and confidence of utility interaction inverter. Construction of system use a low price PIC16F87X. We analyze special character according to system operation through simulation and prove the validity through experiments.

• Journal of Korean society of Dental Hygiene
• /
• v.20 no.5
• /
• pp.603-610
• /
• 2020

Objectives: This study was aimed at investigating the oral hygiene device use by cardiovascular disease patients and assessing related factors. Methods: We used data of 1,630 cardiovascular disease patients (including hypertension, stroke, and myocardial infarction) from the 7th Korean National Health and Nutrition Examination Survey (2016-2018). The χ² test and logistic regression analysis were performed to analyze the oral hygiene device use by the subjects and assess related factors. All statistical analyses were performed with the IBM SPSS Statistics, version 20.0. Results: The oral hygiene device use and related factors were significantly higher in patients with an educational level of middle school or below high school, with a score of 1.85 (95% confidence interval [CI] = 1.35-2.53), or college, with a score of 1.93 (95% CI = 1.19-3.14), compared to those with an educational level below primary school. Further, the oral hygiene device use and related factors were significantly higher in patients who answered 'yes', with a score of 1.96 (95% CI = 1.42-2.73), compared to those who answered 'no' to the question on oral examination. Conclusions: More patients with cardiovascular disease did not use oral hygiene devices than those who did. It is necessary to expand the approach of preventive treatment to increase the utilization rate of oral hygiene devices.

• The Journal of Korean Physical Therapy
• /
• v.14 no.4
• /
• pp.385-397
• /
• 2002

Objectives: This study was to investigate the experience and a Point prevalence rate and factors related with Low Back Pain (LBP) in instructors of drive institute. Methods: Questionnaires were completed by 174 instructors who worked at 13 drive institutes in 4 small cities from June 2002. The information was used to estimate odds ratio (OR) and 95$\%$ confidence intervals (CI) for factors relation to LBP. A retrospective study design was used. Results: The experience rate for LBP was 57.2$\%$, 43.4$\%$ in one year interval prevalence, 42.2$\%$ in 6 months interval prevalence, and 35.8$\%$ in a point prevalence rate. Factor significantly associated with LBP experience by logistic regression was labour hour (p=0.0034), subjects who worked for long hours a day were higher than those who did not (OR=3.8, 95$\%$ CI 1.4-5.6). Conclusions: In conclusion, labour hour was significantly associated with LBP experience.

• The Journal of Korean Physical Therapy
• /
• v.12 no.3
• /
• pp.331-338
• /
• 2000

Objectives: The objective of this study was to investigate the experience and point prevalence rate and factors related with Low Back Pain (LBP) in bin drivers. Methods: Questionnaires were completed by 200 drivers at 2 bus companies in Andong city in October.2000. The information was used to estimate odds ratio (OR) and $99\%$ confidence intervals (CI) for factors relation to LBP. A cross-section study design was used. Results: The experience rate for LBP was $53.5\%$, point prevalence rate was $31.5\%$. Variables significantly associated with LBP experience were employ duration and stress related occupation. The higher subjects had experienced stress. the higher experience for LBP was (OR=2.9, $95\%$ Cl 1.2-7.2). The longer subjects had employ duration in bus company, the higher experience far LBP was (OR=1.3, $95\%$ Cl 1.2-7.2). Significant factors relation to a week point prevalence far LBP were obesity and employ duration. LBP increased as weight increased (OR=4.1, Cl 1.6-10.7). The longer subjects has employ duration at bus company, the higher LBP is (OR=1.4. $95\%$ Cl 1.6-2.9). Conclusions: Results from this study indicated that a statistically significant factor relation to LBP was stress related occupation. employ duration, and obesity.

• Journal of the Korean Society of Tobacco Science
• /
• v.22 no.1
• /
• pp.91-98
• /
• 2000

This study was carried out to evaluate the uncertainty in the analysis of menthol content from the mentholated cigarette. Menthol in the sample cigarette was extracted with methanol containing an anethole as an internal standard, and then analyzed by gas chromatography. As the sources of uncertainty associated with the analysis of menthol, were the following points tested, such as the weighing of sample, the preparation of extracting solution, the pipetting of extracting solution into the sample, the preparation of standard solution, the precision of GC injections for standard & sample solution, the GC response factor of standard solution, the reproducibility of menthol analysis, and the determination of water content in tobacco, etc. For calculating the uncertainties, type A of uncertainty was evaluated by the statistical analysis of a series of observation, and type B by the information based on supplier's catalogue and/or certificated of calibration. Sources of uncertainty were subsequently included and mathematically combined with the uncertainty arising from the assessment of accuracy to provide the overall uncertainty. It was shown that the main source of uncertainty came from the errors in the reproducibility of menthol and water determination, the purity of menthol reference material in the preparation of standard solution, and the precision of GC injections for sample solution. The errors in sample weighing and volume measurement contributed relatively little to the overall uncertainty. The expanded uncertainty in the mentholated cigarettes, Korean and American brand, at 0.95 level of statistical confidence was $\pm$0.06 and $\pm$0.07 mg/g for a menthol content of 1.89 and 2.32 mg/g, respectively.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.11 no.9
• /
• pp.4438-4460
• /
• 2017

The Kernelized Correlation Filters (KCF) tracker has caused the extensive concern in recent years because of the high efficiency. Numerous improvements have been made successively. However, due to the abrupt motion between the consecutive image frames, these methods cannot track object well. To cope with the problem, we propose an extended KCF tracker based on swarm intelligence method. Unlike existing KCF-based trackers, we firstly introduce a swarm-based sampling method to KCF tracker and design a unified framework to track smooth or abrupt motion simultaneously. Secondly, we propose a global motion estimation method, where the exploration factor is constructed to search the whole state space so as to adapt abrupt motion. Finally, we give an adaptive threshold in light of confidence map, which ensures the accuracy of the motion estimation strategy. Extensive experimental results in both quantitative and qualitative measures demonstrate the effectiveness of our proposed method in tracking abrupt motion.

• Journal for History of Mathematics
• /
• v.24 no.3
• /
• pp.145-163
• /
• 2011

This study sets the cut points of affective achievement scores based on the criteria referenced assessment. The modified Angoff method is applied to the standardized mathematics affect inventory which had validity and reliability. The cut points are set for 6 factors i.e. learning directivity, self control, anxiety, interest, cognizing value and confidence. As the results, among percentages of factor that middle school 2nd grade students in Korea achieved, the proportion of cognizing value is the highest. And there are no difference of the proportions as for gender, differentiated instruction, and region.

• Journal of the Korean institute of surface engineering
• /
• v.49 no.5
• /
• pp.447-453
• /
• 2016

In this study, we intended to extend the life of electropolishing solution through the reduction of electric resistance by improving the electrolysis efficiency. The optimum conditions were obtained by half round bus bar and Taguchi method. As the main control factors in the electropolishing process, current density, polishing time, electrolyte temperature and flow rate were selected. The electrolyte temperature was the most significant to the electrolysis efficiency. The optimum conditions for the life extension of electropolishing solution were as follows: current density, $45A/dm^2$; polishing time, 6 min; electrolyte temperature, $70^{\circ}C$; flow rate, 11 L/min. As a results of ANOVA of SN ratios, it was found that the electrolyte temperature was significant factor at the 90% confidence level.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.30 no.1 s.149
• /
• pp.71-82
• /
• 2006

The purpose of this study was to investigate the effect of lifestyle on shopping orientation and internet purchase behavior of Korean adolescents. Specifically, the study categorized the adolescents by their lifestyles and investigated the differences among the groups in regard to shopping orientation, clothing purchase behavior through Internet, and demographics. The subjects for the study were 319 middle and high school students. The data were analyzed by factor analysis, cluster analysis, ANOVA, Duncan test, and $X^2$ test. The results showed that there were three lifestyle groups: Internet/fashion interest group, study oriented group, and family oriented/self-confidence group. The shopping orientations had 6 factors, and Internet purchase behavior included 5 dimensions of clothing purchase types through Internet, apparel selection criteria, and Internet purchase experiences. The groups were significantly different in regard to their shopping orientations, clothing purchase behavior through Internet, and demographics. For example, Internet/fashion interest group ($47\%$) tended to shop impulsively online. When purchasing clothing products online, the group considered the external factors, such as advertisements and fashion more important.