• Korean Journal of Psychosomatic Medicine
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• v.16 no.2
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• pp.112-119
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• 2008

Objectives : Premenstrual syndrome(PMS) is known to occur in more than 80% of reproductive women. Since PMS is closely related to changes in sex hormones, biological factors are suspected to be associated with the syndrome, but there have been no consistent reports regarding biological causes. In that sense, it is postulated that the occurrence of PMS is much dependent on the biological aspects, but that the severity or characteristics of the syndrome is more dependent on the psychological factors. Studies focusing on psychological factors are based on the theory that symptoms of PMS and previous psychologically traumatic events are closely related. If the theory is valid, it can be further postulated that symptom severity of PMS is associated with dissociative symptoms, since traumatic events are known to be related to dissociative symptoms. In this study, we tried to find out the association of PMS symptom severity with previous abuse history and dissociative symptoms. Methods : Subjects for the study were 377 nurses working in Seoul, Kyung-gi, and Kyung-book. 183 subjects who submitted valid data entered the study. The presence and the symptom severity of PMS were rated using Daily Records of Severity of Problems(DRSP) and Shortened Premenstrual Assessment Form(SPAF). Dissociative symptoms were evaluated with Dissociation Experience Scale Korean version(DES-K). Previous physical/verbal abuse, sexual abuse, and parental spouse abuse experience were rated with correspondent abuse scales. Results : Subjects were divided into 3 groups as No PMS group, mild to moderate PMS group, and severe PMS group according to SPAF total score. There was a statistically significant difference in DES-K total score among 3 groups($x^2=14.966$, df=2, p=0.001). Physical/verbal abuse scale($x^2=14.397$, df=2, p=0.001), sexual abuse scale($x^2=8.376$, df=2, p=0.015), and parental spouse abuse scale($x^2=9.322$, df=2, p=0.009) also revealed a significant difference among 3 groups. Symptom severity of PMS using SPAF total score showed a positive correlation both with degree of dissociative experience and previous abuse experience. There was a statistically significant difference in both dissociative experience and previous abuse experience among 3 groups. Conclusion : These results show that there can be a possible association among PMS symptoms, dissociative symptoms, and previous psychologically traumatic experience.

• Women's Health Nursing
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• v.7 no.2
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• pp.188-202
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• 2001

This study was designed to investigate the effect of one-to-one labor support on labor pain, labor stress response, childbirth experience and neonatal status for primipara by a quasi experiment (nonequivalent control group pretest-posttest design), from April 30, 1999 to February 20, 2000. The subjects of this experiment consisted of eighty two primipara with single gestation, full term, uncomplicated pregnancies. Forty one were in the experimental group and forty one in the control group. Their mean age was 25.95 years, their mean gestation period was 39.9 weeks. A caring package of one-to-one labor support had three components. Physical support consisted of massage, back pressure, touch. Emotional support was provided by a continuous nurse's presence, acceptance and encouragement. Informational support involved teaching breathing skills, relaxation skills and knowledge about the labor process. Data assessed labor pain, pulse rate and blood pressure to measure labor stress response. Also, in measuring the value of labor stress response, plasma epinephrine, plasma norepinephrine and serum cortisol were measured. In the 24 hours after birth, the data for the postpartum mother's childbirth experiences was collected. Umbilical cord arterial blood pH, one minute and five minute Apgar score were measured after birth. Data was analyzed by t-test, $x^2$-test, repeated measures ANOVA, ANCOVA with SAS Program. The results were as follows; 1. Labor pain was significantly low in the experimental group(P=.016). 2. No significant group effects were found, but significant time effects were found for plasma epinephrine, norepinephrine, serum cortisol, pulse rate and blood pressure. 3. The childbirth experience of the experimental group was significantly more positive than the control group (P = .005). 4. The umbilical cord arterial blood pH of the experimental group was significantly higher than the control group(P=.014). There was no significant difference between the two groups in neonatal one minute and five minute Apgar scores. In conclusion, these findings indicate that one-to-one labor support could be effective in decreasing labor pain, and increasing positive childbirth experiences, also increasing the neonatal umbilical cord arterial blood pH for primipara. So, one-to-one labor support could be applied as an effective nursing treatment for primipara.

• Journal of Korea Technology Innovation Society
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• v.21 no.1
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• pp.265-299
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• 2018

Patent litigation has been considered as a tool to protect and facilitate innovation. Ironically, yet, the misguided uses of patent litigation as a strategic tool for vigilance against competitors are acting as a hindrance for innovation. Previous studies show that the better the quality of a patent, the higher the chance of the patent being litigated. Therefore, it is particularly important for the innovating firms to take strategic precautions to minimize the risk of patent litigation. This study investigates the moderating role of firms' past alliance experiences on the relationship between patent quality and patent litigation from the perspective of a defendant. A unique dataset on patents, infringement lawsuits, and firm performances in the printed electronics industry confirms that firms' previous alliance experiences mitigate the impact of patent quality on infringement litigation. For instance, the results confirm that the presence of past alliance experience reduces the litigation rate by 33% for firms with median-quality patents. This paper makes two major contributions. First, it contributes to the literature on alliance experience by confirming its role as a reputation in mitigating future litigations. Second, this paper contributes to the literature on patent litigation by identifying a unique moderator, i.e., alliance experience, on the linkage between patent quality and litigation. An innovating firm is likely to become an alleged infringer under a false accusation. Therefore, this paper focuses on firms that partake in infringement lawsuits unwillingly. Despite the importance, to the best of our knowledge, this is the first study to investigate patent litigations from the perspective of defendants.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.76-86
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• 2013

This study examined users' acceptance process with the QR code as an interactive marketing communications tool. We collected total 200 survey data and 181 questionnaires among them were used for the analysis during for five days, from 9 to 13 in May 2011. The first research question of this study examined the relationship among subjective norms, perceived usefulness, perceived ease of use, attitudes, and intention to use through the structural equation modeling analysis. The result of the first research showed that subjective norms about the use of QR code affect intention to use via perceived usefulness, and also directly influence on it. The perceived usefulness has the biggest impact on the intention to use. The research question 2 was to look at the condition effect with the presence of experience. As the analysis result of the second research question, the relationships between subjective norms and perceived usefulness are not different whether or not groups experience QR code, and both groups appeared to have had significant impact. Whereas the relationship between subjective norms and intention to use showed a significant influence on the population that has the experience with the QR code. In order to encourage use of the QR code, therefore, we will need to highly impress on users subjective norms which are ambient pressure on the use of QR code and positively offer marketing strategy which gives users the opportunities to get experience with the QR code.

• The Journal of Korean Society for School & Community Health Education
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• v.1 no.2
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• pp.105-125
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• 2000

The purpose of this study was to examine the influence of school safety accident on teacher's normal educational activities and to seek some desirable ways to cope with it. The subjects in this study were 351 class teachers randomly selected from Seoul and Kyonggi Province and surveyed from April through July, 2000. The conclusions were as follows; 1. Actual Condition of School Safety Accident 1) Approximately many teachers investigated had had an experience to suffer safety accident. Safety accident occurred most during break or class, but there was a significant difference according to service area. 2) Safety accident took place most in playground, and the most common cause was student's own carelessness, and the most widely occurred accident type was an injury. But there was no significant difference caused by the general characteristics of the teachers. 2. Influence of Safety Accident On Teacher's Educational Activities. 1) The largest reason they offered safety education was to ensure student safety. The greatest number of them had an opinion they would consider changing or giving up a planned normal educational activity if they recognized any possibilities of safety accident. There was a significant difference in this point according to gender and career. 2) They worried about possible safety accident most during field study, but there was a significant difference according to gender or presence or absence of safety accident experience. 3) The general characteristics of teacher produced a significant difference to an experience of avoiding educational activity due to psychological withdrawal, but safety accident experience didn't make any difference. 3. Minimization of Teacher Damage or Loss from Safety Accident. 1) The dominant opinion about teacher's small mistake for any occurrence of safety accident was that the responsibility should be escaped to maintain teacher's authority. For severe mistake, however, there were two different opinions at the same percentage: one was being exempted and the other was taking civil liability. 2) Establishing teacher insurance was preferred as a way to minimize teacher's economic loss from safety accident, but there was a significant difference according to gender. 3) The dominant opinion about the payment of insurance premium for safety accident was that it should be paid from school operating expenses.

• The Korean Journal of Emergency Medical Services
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• v.13 no.1
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• pp.115-127
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• 2009

Purpose : This study is descriptive correlation research aimed to examine knowledge and performance ability of cardiopulmonary resuscitation of student attending the college and provide basic materials in developing cardiopulmonary resuscitation program. Methods : Data collection was conducted with the 1st, 2nd and 3rd grade college students sampled randomly by giving them questionnaire from Sep. 1 to 4, 2008. It used the research instrument used by Choi Hyang Ok(2006) and revised and complemented by the researcher and 200 data excluding questionnaire showing unfaithful responses were used for analysis. Data collected were verified with technical statistics using SPSS/PC(version 12.0), t-test, ANOVA, and Pearson's correlation coefficient. Results : The results of this study are as follows. 1. Subjects' knowledge score of cardiopulmonary resuscitation was average .40(out of 1) and their performance ability score was average 2.39. 2. In the knowledge of cardiopulmonary resuscitation according to subjects' general characteristics, score was higher between over thirty and below twenty in age and in male subjects by sex and there were statistically significant differences(t=3.069, p=.029). 3. In the knowledge of cardiopulmonary resuscitation related to subjects' cardiopulmonary resuscitation, there were statistically significant differences in such variables as 'have you ever heard about cardiopulmonary resuscitation' (t=3.685, p=.000), 'presence or absence of education of cardiopulmonary resuscitation'(t=3.764, p=.000) and 'experience of observing cardiopulmonary resuscitation'(t=4.747, p=.000). In the performance ability of cardiopulmonary resuscitation by subjects, there were also statistically significant differences in such variables as 'have you ever heard about cardiopulmonary resuscitation' (t=2.269, p=.024), 'presence or absence of education of cardiopulmonary resuscitation' (t=3.541, p=.000) and 'experience of observing cardiopulmonary resuscitation' (t=8.118, p=,000). 4. Relation between the knowledge and the performance ability of cardiopulmonary resuscitation showed positive correlations as the more knowledge, the higher performance ability(r=.570, p=.000). Conclusion : Consequently, it was found that the knowledge and the performance ability of cardiopulmonary resuscitation by subjects were below the average and their levels of knowledge and performance ability were varied. Therefore, if 1 : 1 education with theory and practice considering knowledge and performance ability of each student in performing cardiopulmonary resuscitation education with college students is conducted, more lives can be saved by applying cardiopulmonary resuscitation not to be embarrassed when they encounter cardiac arrest case and contribute to the increase of survival of cardiac arrest patients.

• Research in Community and Public Health Nursing
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• v.13 no.2
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• pp.343-353
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• 2002

Objectives: The aim of this study was to explore nursing students' attitudes towards sexually active elderly, and to compare their attitudes with those of non-nursing students. Methods: Study subjects consisted of 118 nursing students, and 134 non-nursing students, recruited from two universities. The data were collected from September to November 2001. Vignettes, which presented hypothetical situations of sexual activities of the elderly (65 years of age, 80 years of age/sexual activity mentioned. non-mentioned), were provided as a research method, as well as the use of a structured questionnaire. Vignettes showed the hypothetical situations by male elder's sexual activity and their age. Respondents were asked to address their thoughts in the questionnaire. Results: 1. Nursing students showed more favorable attitudes toward the elderly than non-nursing students, regardless of the presence of sexual activity of the elderly. 2. No significant difference was found in nursing students' attitudes toward the elderly aged 65 and 80 years, between those who were sexually active and those who were not. These results were the same in non-nursing students. 3. Nursing students showed more favorable attitudes toward the sexually active elders aged 65 years (5.6 1.43), than toward sexually active elders aged 80 years (4.89 1.55). This result was also the same in non-nursing students. 4. The variables significantly affecting attitudes toward the sexually active elderly in nursing students were familiarity with old persons (p=. 02), presence of living grandparents (p=. 05), and the experience of caring for old people (p=. 01). However, in non-nursing students, familiarity with old people was the only significant variable that affected their attitudes toward the sexually active elderly. 5. In nursing students, one variable to predict attitudes toward the sexually active elderly was the experience of caring for old people (p=. 03), accounting for 10% of the total variance. In non-nursing students, familiarity with old people was the only variable to attitudes toward the sexually active elderly (p=. 03), accounting for 3% of the variance for attitude. In both student groups, the variables that predicted attitudes toward the sexually active elderly included college major (p=. 03), school year (p=. 01), familiarity with old people (p=. 02), accounting for 12% of the variance for attitude by these variables. conclusion: Nursing students showed more favorable attitudes toward the sexual activity of elders 65 years of age or over, than non-nursing students. However, both the nursing and non-nursing students showed negative attitudes toward the elderly who were 80 years of age when compared with those 65 years of age. There should be a consideration in nursing education curriculums that university students may have negative attitudes towards sexual activity of the elderly over 80 years of age.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.573-583
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• 2016

This descriptive investigative study was conducted to evaluate middle school students in the city to understand their experience with tobacco use and the factors that affect the intention for tobacco use in the future, as well as to investigate the relevance between student attitudes towards tobacco use and their understanding of the toxicity of its use. A total of 1,044 middle school students located in C city were surveyed from October 13 to November 27, 2015. The results showed significant differences in age, grade, amount of allowance, absence/presence of friends of the opposite sex, and first experience with tobacco use. Moreover, intentions of tobacco use in the future showed significant differences in age, religion, allowance, rate of satisfaction of the school environment, absence/presence of friends of the opposite sex, and academic grade (p<0.05). Based on the above results, it is necessary to implement a consistent anti-smoking education in the home and school starting in elementary school to reduce the rate of tobacco use in middle school students.

• Journal of Korea Game Society
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• v.13 no.3
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• pp.5-18
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• 2013

This study analyzed the effect by comparing it with 2D game using playtest experimental treatment methodology to verify the video effect, materiality and fatigue effect of 3D video game. First, for the hypothesis to verify the difference of video experience of users for 3D and 2D games, visual clarity was rejected, but materiality, tangibility and presence hypotheses were all accepted. Second, it was shown that there was no difference in eye fatigue and physical fatigue in 3D and 2D games. It was different from results of existing research which claimed that fatigue occurred due to video distortion occurring in 3D video and fatigue inducing factors. Third, the results of measurement of changes in brain wave occurring in the course of playing 3D and 2D games showed that there was no difference in average amplitude of EEG alpha wave, but EEG beta wave occurred in higher amplitude. This study proved the cerebral physiological change and difference in the process of experience to use 3D video game by complementing the methodology in measurement in EEG brain wave in the traditional experimental method.

• Archives of Plastic Surgery
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• v.42 no.2
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• pp.186-193
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• 2015

Background Polyurethane coating of breast implants has been shown to reduce capsular contracture in short-term follow-up studies. This 30-year study is the longest examination of the use of polyurethane-coated implants and their correlation with capsular contracture. Methods This study evaluates the senior surgeon's (F.D.P.) experience with the use of polyurethane-coated implants in aesthetic breast augmentation in 382 patients over 30 years. Follow-up evaluations were conducted for six months after surgery. After the six-month follow-up period, 76 patients returned for reoperation. The gross findings, histology, and associated capsular contracture were noted at the time of explantation. Results No patient during the six-month follow-up period demonstrated capsular contracture. For those who underwent reoperation for capsular contracture, Baker II/III contractures were noted nine to 10 years after surgery and Baker IV contractures were noted 12 to 21 years after surgery. None of the explanted implants had macroscopic evidence of polyurethane, which was only found during the first five years after surgery. The microscopic presence of polyurethane was noted in all capsules up to 30 years after the original operation. Conclusions An inverse correlation was found between the amount of polyurethane coating on the implant and the occurrence of capsular contracture. Increasingly severe capsular contracture was associated with a decreased amount of polyurethane coating on the surface of the implants. No contracture occurred in patients whose implants showed incomplete biodegradation of polyurethane, as indicated by the visible presence of polyurethane coating. We recommend research to find a non-toxic, non-biodegradable synthetic material as an alternative to polyurethane.