• The Journal of Korean Obstetrics and Gynecology
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• v.20 no.3
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• pp.129-136
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• 2007

Purpose: We intended to observe the usefulness of far-infrared radiation functional under inner-wear for dysmenorrhea. Methods: We introduced far-infrared radiation functional under inner-wear to women in childbearing-age by internet portal site. Then, we preliminarily examined dysmenorrhea severity by VAS(visual analogue scale) questionnaire to women interested in far-infrared radiation functional under inner-wear. We selected women scored 5 and above of 10 measurement VAS score. Finally, 121 women were the subject of study and used far-infrared radiation functional under inner-wear for one menstrual cycle. Before and after use of far-infrared radiation functional under inner-wear, we conducted a questionnaire survey of dysmenorrhea severity by VAS. After that, we compared VAS score before and after use. Also, we studied correlation between frequency of far-infrared radiation functional under inner-wear use and ${\Delta}VAS$(VAS score before use minus VAS score after use). For statistics, we used Paired samples test and Spearman's rho correlations, SPSS 13.0 for windows. Results: Before and after use of far-infrared radiation functional under inner-wear, VAS score means were different. Frequency of far-infrared radiation functional under inner-wear use was correlated to ${\Delta}VAS$. Statistically they showed significant result (p<0.05>. Conclusion: The results showed that dysmenorrhea severity by VAS decreased after far-infrared radiation functional under inner-wear use. As frequency of use increased, ${\Delta}VAS$ increased. So we can consider far-infrared radiation functional under inner-wear effects dysmenorrhea severity.

• The Journal of Korean Medicine
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• v.35 no.3
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• pp.22-31
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• 2014

Objectives: The aim of this study was to identify the complementary and substitute relationships between the use of Korean medicine (KM) and that of Western medicine (WM) in the treatment of musculoskeletal disease. Methods: We analyzed the 2009 Korea Health Panel dataset. General characteristics and the medical utilization of respondents were analyzed descriptively. Logistic regression, negative binominal regression, and Tobit regression analysis were used to identify the relationships between the use of KM and the use, visit frequency, and expenses of WM, respectively. Results: In the treatment of musculoskeletal disease, KM use and non-herbal treatments with Korean medicine significantly reduced WM use. Herb medication use significantly increased WM visit frequency. There were no significant relationships between KM use and WM expenses. Conclusions: There are substitute relationships between WM use and KM use, especially non-herbal treatments in KM. Therefore we need to develop the clinical protocols of KM and WM treatments in the treatment of musculoskeletal disease for proper distribution medical resources.

• Journal of Korean Library and Information Science Society
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• v.39 no.1
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• pp.33-50
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• 2008

The purpose of this study is to provide for efficient health information service which doctors may use for their better medical practice and scientific research. 177 doctors were surveyed from December 3 to December 21th in 2007. This study mentioned activities of information need and use that were evaluated by information gathering methods used, information source, frequency of use, and degree of satisfaction toward library services. Doctors showed that they need information mainly to know the recent research results in their interesting subject field and to treat a patient. Doctors trended to obtain information through internet search because easy access and easy use, accuracy and up to dateness of information use. Doctors trended to seek information mainly through library, but they showed relatively low frequency of library use because they do not know how to use it.

• The Journal of Information Technology
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• v.4 no.4
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• pp.73-87
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• 2001

This research is to study the frequency of internet use in domestic trading companies and to analyze how to appear the effect of internet use in accordance with the frequency of internet use. To subdivide the analysis, the effect of internet use is classified into the curtailment effect of transaction & Time. Prior to examining the effect of internet use, I survey the concepts, trends, and prospect of cyber trade in electronic commerce through the research of documents. Before the positive analysis, I synthetically evaluated the characteristics of existing researches regarding electronic commerce and internet trade.

• Journal of Korean Home Economics Education Association
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• v.12 no.3
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• pp.105-114
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• 2000

The purpose of this study was to investigate the effects of instructional multi-media in Home Economics Education perceived by teachers. The data for this research were attained from 139 middle & high school teachers of Home Economics. The data were analyzed by frequency of distribution, mean, stand deviation. t-test and analysis of variance, scheffe test with SPSSWin 7.5 program. The results of this study are as follows: The effects of instructional multi-media were composed of four dimensions in this study; need, frequency of use, pros and cons. 1. From these four dimensions, the need has the highest and the frequency of use has the lowest score. 2. The effects of instructional multi-media are significantly related to personal & environmental characteristics. 1)Need of the instructional multi-media effects is significantly different according to age, experience of computer education and possession of a computer at home. Low and high age groups are higher in the need of the instructional multi-media effects score than middle group age and the more experience of computer education and possession of a computer at home are higher in that score. 2) Frequency of use is significantly different according to LAN system in school. The higher score of frequency of use is in a LAN system’s school. 3) Pros of the instructional multi-media effects is significantly different according to the level of education, experience of computer education and the type of school. Undergraduate high school teachers and the lower o experience of computer education are higher in the pros of the instructional multi-media effects score. 4) Cons of the instructional multi-media effects is significantly different according to the level of education. Graduate teachers are higher in the cons of the instructional multi-media effects score.

• Journal of Distribution Science
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• v.13 no.8
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• pp.81-90
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• 2015

Purpose - To vitalize a market or develop a new one, companies frequently release new products into the market, often by shortening the time to market, called the release period. This research aims to investigate the purchase intention behavior of consumers in terms of buying new products at the time of product release based on the release speed. Research Design, Data, and Methodology - The research reviews the influence of relative advantage, complexity, and compatibility among innovative attributes of new products, as proposed by Rogers. Moreover, it examines the moderating effect of the innovative new product attributes in terms of speed of obsolescence of old products and how that influences consumer purchase behavior. Additionally, this study tests the research hypotheses using empirical analysis. Results - The analysis demonstrated that the relative predominance (H1) and suitability (H3) of new products had a statistically significant positive influence on new product purchase intention. However, the complexity (H2) of new products had a statistically significant positive influence on new product purchase intention in contrast to its predicted sign (-). The results of the moderating effect of the old product use period were as follows. H4-1 was not supported since the difference between the path coefficients of the group with the low level old product use period and the group with the high level, represented by the relationship of relative predominance and new product purchase intention, was not statistically significant. H5-1 was also not supported since the difference between the path coefficients of the group with the low level of old product use period and the group with the high level, represented by the relationship of complexity and new product purchase intention, was not statistically significant. However, H4-2 was supported since the difference between the path coefficients of the group with the low level of old product use frequency and the group with the high level, represented by the relationship of relative advantage and new product purchase intention was statistically significant. H5-2 was not supported since the difference between the path coefficients of the group with the low level of old product use frequency and the group with the high level, represented by the relationship of complexity and new product purchase intention, was not statistically significant. H6-2 was also not supported since the difference between the path coefficients of the group with the low level of old product use frequency and the group with the high level, represented by the relationship of compatibility and new product purchase intention, was not statistically significant. Conclusion - According to the results, only H4-2 among the hypotheses on the moderating effect of the old product use period and use frequency was statistically significant. Future research should focus on carrying out a detailed review of the hypothesis on the moderating effect of the old product usage period and frequency, find the cause, and connect this to potential new research.

• Journal of The Korea Institute of Healthcare Architecture
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• v.28 no.4
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• pp.41-50
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• 2022

Purpose: This study aims to suggest an analysis model finding the relationship between building scale characteristics of Public-use facilities and infectious disease outbreaks around senior leisure welfare facilities and the features and their scopes where quarantine resources are to be concentrated. Methods: Reviewing previous studies found the user characteristics of senior leisure welfare facilities and scale characteristics of urban architectures. The data preprocessing was performed after collecting building data and infectious disease outbreak data in the analysis area. This study derived data for attributes of building size and frequency of infectious disease outbreaks in Public-use facilities around senior leisure welfare facilities. A computing algorithm was implemented to analyze the correlation between the building size characteristics and the infectious disease outbreak frequency as per the change of the spatial scope. Results: The results of this study are as follows: First, the suggested model was to analyze the correlation between the infection frequency and the number of senior leisure welfare facilities, the number of Public-use facilities, building area, total floor area, site area, height, building-to-land ratio, and floor area ratio varied as per the change of spatial scope. Second, correlation results varied between the infection frequency and the number of senior leisure welfare facilities, the number of Public-use facilities, building area, total floor area, site area, height, building-to-land ratio, and floor area ratio. Third, a negative correlation appeared in the analysis between the number of senior leisure welfare facilities and infection frequency. And positive correlations appeared noticeably in the study between the number of Public-use facilities, building area, total floor area, height, building-to-land ratio, and floor area ratio. Implications: This study can be used as primary data on the utilization of limited quarantine resources by analyzing the relationship between the Public-use facilities around the senior leisure welfare facilities and the spread of infectious diseases. In addition, it suggests that infectious disease prevention measures are necessary considering the spatial scope of the analysis area and the size of buildings.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.352-359
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• 2020

This study utilizes raw data from the first-ever Korea National Health and Nutrition Examination Survey (KNHANES) conducted in 2017 and its purpose is to identify factors that influences Daily toothbrushing frequency and use of oral health care products for adolescents aged 13 to 18 years in conjunction with their mothers. Factors affecting Daily toothbrushing frequency of adolescents are: Whether the mother smokes or not, and Daily toothbrushing frequency for the mother. The more the mother younger and smoked and brushed her teeth, the higher the number of sessions increased for the adolescent child. The higher the mothers' level of education and use of oral care products were the greater the adolescent child's use of oral care products became. As a result, the study determined that the oral health of adolescents and of their mothers are closely related. A program to educate adolescents and mothers to promote the oral health of adolescents should be developed, and continuously and systematically implemented at home and school.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.33 no.5
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• pp.188-192
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• 1984

A method of frequency multipling of square waveforms is described and an integrable frequency multiplier which is fully compatible with IC technology, and made use of only bipolar transistors and resistors is proposed. The circuit is composed of only integrable time delay circuits and exclusive OR gates. Hence the circuit shows some useful characteristics.

• 제어로봇시스템학회:학술대회논문집
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• 1988.10b
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• pp.943-946
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• 1988

A simple method is proposed for determining the frequency response function G(j.omega.) of a system using a pair of characteristic M-sequences (maximum length linear feed back shift register sequence). When a characteristic M-sequence is sampled with q$_{1}$ and q$_{2}$ both of which are coprime with N, where N is the period of the M-sequence, the obtained pair of sequences have conjugate complex frequency spectrum. Making use of this fact, two charcteristic M-sequences having conjugate complex frequency spectrum are applied to a system to be measured. Since the magnitude of spectrium of M-sequence is known, the gain of G(j.omega.) is directly obtained from the Fourier transform of the system output. The phase of G(j.omega.) is obtained simply by taking the average of the two phases of output spectrum.