KSCE Journal of Civil and Environmental Engineering Research
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v.36
no.1
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pp.169-180
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2016
The spaces of port and urban in a Port City have different space characteristics substantially, but those are required to be developed interdependently. Degradation and loss of the sense of place in the existing spaces caused by decline of natural function have an adverse effect on the revival of local economy as well as make worse image of the entire city. In some developed countries, therefore, many researches on the port spaces lagging behind the times due to changes of the characteristics and function of port spaces have been conducted continuously for a long time. This study aims at seeking a device how the domestic hinterland could be utilized as efficient spaces having the characteristics of outskirts space and port city interface through the application of characteristics of the interface space of port city, capable of playing a role as buffer zone between the port space and the city space.
Purpose: The purpose of this study was to investigate the degree of the gender role identity and quality of life of women applying hormone replacement therapy with hysterectomy and to identify the relation among these variables. Methods: The subjects were 121 outpatients applying hormone replacement therapy with hysterectomy at a university hospital in Busan province. The data were collected using self-reported questionnaire and medical record, from September to October 2008. Results: There were statistically significant differences in the degree of quality of life according to the age, educational level, occupation, family economic status, Body Mass Index (BMI), menopause state, duration to restarting intercourse from hysterectomy, discomfort from intercourse, satisfaction from intercourse and duration, sources, and formulation of hormone replacement therapy (HRT). The femininity identity group occupied the largest proportion (31.4%), and then the masculinity identity group (28.1%), the undifferentiated identity group (26.4%), and finally the androgyny identity group (14.1%). There was a positive correlation between femininity and quality of life (r=.276, p=.002). Conclusion: These results indicate that HRT helps the women's sense of loss caused by hysterectomy to be reduced, the postmenopausal symptom after hysterectomy to be relieved and the quality of life to be improved.
The purpose of this study was to examine the impact of the daily stress and social support of elderly people on their psychological wellbeing in an effort to provide some information on the promotion of the psychological wellbeing of the elderly. The major findings of the study were as follows: The psychological wellbeing of the elderly people was under the statistically significant negative influence of their family relations, health problems and sense of loss among the subfactors of daily stress. As for the subfactors of social support, emotional support and support from friends had a significant positive impact on that. The findings of the study suggest that in order to boost the psychological wellbeing of the elderly, they should be helped to cope with various stress that they face in daily routine life, and a variety of programs should be developed to bolster their psychological stability. In addition, the kind of community programs in which they can participate with their friends should be prepared, and how to provide them with better emotional support should carefully be studied.
Polymeric meterials that are used for noise and vibration damper in wood/polymer/wood sandwich composites, must have a high loss factor(tan ${\delta}$), and at the same time the storage modulus(E) of $5{\times}10^7$ to $10^9$ dyne/$cm^2$ must withstand over a wide temperature and frequency ranges. In this study, the series of epoxy resinlpolyacrylate interpenetrating polymer networks(IPNs) were synthesized by simultaneous polymerization. Their dynamic tensile properties were measured at 110Hz using Rheovibron instrument. Composite damping factor(tan ${\delta}_c$) and dynamic bending modulus($E_c,\;E_^{\prime\prime}c$) of wood/polymer/wood sandwich composites were measured at 110Hz using a Rheovibron in bending mode of vibration. These dynamic tensile studies indicated that cured epoxy resin/polyacrylates IPNs were semicompatible in the sense that both the shifting of T($E^{\prime\prime}_{max}$) or T(tan ${\delta}_{max}$) and the broadening of glass transition temperature range were observed. Especially, the cured Epikote871/P(n-BMA) IPNs of composition 70/30 to 50/50 showed a relatively high tan a and appropriate E' value over a wide temperature range; consequently the tan a e curves of wood/IPNs/wood sandwich composites was broadened over a wide temperature range.
Woo Seok Jin;Pranabesh Sahu;Gyuri Kim;Seongrok Jeong;Cheon Young Jeon;Tae Gyu Lee;Sang Ho Lee;Jeong Seok Oh
Elastomers and Composites
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v.58
no.1
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pp.32-43
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2023
The worldwide use of polyurethane foam products generates large amounts of waste, which in turn has detrimental effects on the surroundings. Hence, finding an economical and environmentally friendly way to dispose of or recycle foam waste is an utmost priority for researchers to overcome this problem. In that sense, the glycolysis of waste flexible polyurethane foam (WFPF) from automotive seat cushions using different industrial-grade glycols and potassium hydroxide as a catalyst to produce recovered polyol was investigated. The effect of different molecular weight polyols, catalyst concentration, and material ratio (PU foam: Glycols) on the reaction conversion and viscosity of the recovered polyols was determined. The obtained recovered polyols are obtained as single or split-phase reaction products. Besides, the foaming characteristics and physical properties such as cell morphology, thermal stability, and compressive stress-strain nature of the regenerated flexible foams based on the recovered polyols were discussed. It was observed that the regenerated flexible foams displayed good seating comfort properties as a function of hardness, sag factor, and hysteresis loss compared to the reference virgin foam. With the growing demand for a sustainable and circular economy, a global valorization of glycolysis products from polyurethane scraps can be realized by transforming them into profitable substances.
Journal of Family Resource Management and Policy Review
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v.22
no.4
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pp.17-32
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2018
The purpose of this study was to explore the effects of family life stress and family values on marital stability among middle-aged couples. The subjects included a total of 302 men and women aged 45-64 who had been married for more than 20 years and were living in Seoul. The collected data were statistically analyzed with the SPSS 21.0 Package. First, Cronbach's alpha was calculated to measure the reliability of the scale that assessed the variables of the research model. Then, mean and standard deviation were calculated to determine the degrees of family life stress, family values, and marital stability among the subjects. Finally, a hierarchical multiple regression analysis was performed to identify factors that affected the subjects' marital stability. The results revealed that the level of family life stress in middle-aged married men and women was slightly higher than the mean value. Of all the sub-scales of family life stress, the subjects were found to experience the most stress from factors related to financial pressure, followed by family relationships, a sense of loss within a family, and work-family compatibility. Therefore, financial problems were one of the critical stressors for middle-aged married couples. Also, for this demographic, the levels of family values and marital stability were higher than the medians. The factors affecting marital stability in middle-aged couples were identified to be family relationship stress, financial stress, subjective economic status, family values, stress related to work-familycompatibility,religion,andage.Thedegreeofmaritalstabilitywashigherinmiddle-agedcouplesa stheirstresslevelsfromfamilyrelationshipsandfinancialproblemswerelower.Moreover,thehigherthes ubjectiveeconomicstatusandthemoretraditionalthefamilyvalues,thehigherthedegreeofmaritalstabili ty.Finally,marriedcoupleswhowerereligioushadalowerlevelofstressfromwork-family compatibility, and the younger the couples, the higher the degree of marital stability.
Journal of Physiology & Pathology in Korean Medicine
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v.34
no.5
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pp.215-221
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2020
Adulterated herbal medicine is intentionally added with undeclared improper or inferior ingredients which should not be in herbal medicine. The contamination with potentially hazardous substances such as heavy metal, pesticides, fungus, and microorganism sometimes can be regarded as one of adulteration in a broad sense. The problem of adulteration is that adulterated herbal medicine shows poor quality and/or can cause adverse events. Therefore, it is important to control adulteration issues for quality assurance and qualitative improvement of herbal medicines. This study aims to summarize and make a reference how to control adulterated herbal medicine. In this process, this study is to investigate studies about adulterated herbal medicine via searching Korean and foreign electronic databases such as PubMed, NDSL and OASIS. Finally eighteen papers were included to this study and analyzed according to the type of study, the category and efficacy of adulterants, the type of analysis methodologies and possible adverse events of adulterants. Phosphodiesterase type 5 (PDE-5) inhibitors for male sexual enhancement and anorexic, laxative, diuretic agents for weight loss and treating obesity has been used frequently as adulterants. The range of adverse event caused by adulterated herbal medicine were very wide from mild symptoms such as diarrhea, constipation, dizziness and blurred vision to very severe symptoms such as heart failure, hypoglycemia and renal impairment. This study showed the recent trend on the research of adulterated herbal medicine and this will be the ground to develop more detailed systems to control adulterated herbal medicine.
Recently, because credit card crime using a personal credit information is increasing, professionalizing, and spreading the area, the loss occurring from credit card crime is enormous and is difficult to arrest and punish the criminals. At past, crime from forging and counterfeiting the credit card was originated by minority criminals, but at present, the types and appearance of credit card crime is very different to contrasting past crime. The numbers of people using credit card in the middle of 1990's was increasing and barometer of living conditions was evaluated by the number having credit card, therefore this bad phenomenon occurring from credit card crime was affected by abnormal consumption patterns. There is no need emphasizing the importance of personal credit card in this credit society. so, because credit card crime using personal credit card information has a bad effect, and brings the economic loss and harms to individuals, credit card company, and members joining credit card. Credit card crime using personal credit card information means the conduct using another people's credit card information(card number, expiring duration, secret number) that detected by unlawful means. And crime using dishonest means from another people's credit information is called a crime profiting money-making and a crime lending an illegal advance by making false documents. A findings on countermeasures of this study are as follows: Firstly, Diverting user's mind, improving the art of printing, and legitimating password from payment gateway was suggested. Secondly, Complementing input of password, disseminating the system of key-board protection, and promoting legitimations of immediate notification duty was suggested. Thirdly, Certificating the electronic certificates as a personal certificates, assuring the recognition by sense organ of organism, and lessening the ratio of crime occurrence, and restricting the ratio of the credit card crime was suggested.
This study examined the effects of demographic variables and psychological mechanisms (self-efficacy, need for closure, and fashion innovativeness) on each of the four types of impulsive buying, including suggestion impulsive buying, stimulus impulsive buying, pure impulsive buying, and reminder impulsive buying. In addition, the study analyzed the impact these four types had on evaluations after impulsive buying (i.e., diversion in mood, regret for buying decision and a sense of financial loss, and dissatisfaction of products). Data was collected by a marketing research company from five hundreds consumers in seven different cities of South Korea who experienced impulsive buying in the off-line apparel stores within the past three months. The results of regression analyses indicated that self-efficacy and gender significantly affected suggestion impulsive buying. That is, the higher consumers' self-efficacy, the greater their suggestion impulsive buying was. In addition, women had higher Suggestion Impulsive Buying than men did. However, in case of Stimulus Impulsive Buying, gender was the only significant antecedent. That is, women had higher stimulus impulsive buying than men did. In terms of pure impulsive buying, fashion innovativeness was a significant predictor, and for the reminder impulsive buying level, fashion innovativeness and need for closure were significant predictors. Finally, pure and suggestion impulsive buying were correlated with positive consumer evaluations, while both stimulus and reminder impulsive buyings were correlated with negative consumer evaluations. Implications and future studies were discussed.
Journal of Korean Society for Atmospheric Environment
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v.17
no.E4
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pp.163-168
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2001
Estimating the emission rate of VOCs from a gasoline industry at national level can be a challenging take even though the estimation is mean-based. However, using the procedures in the US EPA AP-42 guidelines, it is possible to approximate the mean industry emission rate once enough data are available. However, this estimate can be misled in the sense that there exist many stochastic factors in the EPA\\`s estimation procedures and also throughout the marketing channels of gasoline industry. Addressing the stochasticity problem in EPA\\`s procedure is hard to tackle because the detailed data needed to execute the estimation are not usually available even from refiners. Instead, this research tries to stay focused on the second type of stochasticity issue, raised from the mean0based metrological and marketing practice data collected from the 4 major refiners. To do so emission raters from each marketing channels (8 marketing points by 3 transportation types and by storage facilities of 4 refiners) are estimated monthly, following AP-42 procedures and using Tank 4.0. Once these estimates are acquired, the distribution of VOC emission rate for each marketing channel of all 4 refiners is estimated through simulation method using @Risk. The mean-based emission rates are weighted by company quantities to estimate the emission rate from the whole gasoline industry. Simple economic implication is provided, based on the result. This study found that, on the mean-bases, about 0.66% of gasoline marketed are evaporated into air. Considering the stochasticity in the estimation, about 90% of simulation results fell into the range of 0.65 to 0.68%. For 90% chance, the estimated economic loss is $54.65 million to $57.17 million, not counting the cost caused by air quality degradation and associated health impact.
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