• Journal of the Computational Structural Engineering Institute of Korea
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• v.20 no.5
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• pp.533-541
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• 2007

The Zienkiewicz-Zhu(Z/Z) error estimate is slightly modified for the hierarchical p-refinement, and is then applied to L-shaped plates subjected to bending to demonstrate its effectiveness. An adaptive procedure in finite element analysis is presented by p-refinement of meshes in conjunction with a posteriori error estimator that is based on the superconvergent patch recovery(SPR) technique. The modified Z/Z error estimate p-refinement is different from the conventional approach because the high order shape functions based on integrals of Legendre polynomials are used to interpolate displacements within an element, on the other hand, the same order of basis function based on Pascal's triangle tree is also used to interpolate recovered stresses. The least-square method is used to fit a polynomial to the stresses computed at the sampling points. The strategy of finding a nearly optimal distribution of polynomial degrees on a fixed finite element mesh is discussed such that a particular element has to be refined automatically to obtain an acceptable level of accuracy by increasing p-levels non-uniformly or selectively. It is noted that the error decreases rapidly with an increase in the number of degrees of freedom and the sequences of p-distributions obtained by the proposed error indicator closely follow the optimal trajectory.

• Journal of Preventive Medicine and Public Health
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• v.37 no.2
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• pp.166-173
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• 2004

Objectives : Cervical cancer is the second most frequent cancer among women in Busan. The Pap smear test could have a significant effect on detecting cervical cancer, and enhancing their rate of use is an important strategy for reducing the incidence and mortality of cervical cancer. This study aimed to evaluate the factors associated with the past use of the Pap smear test in Korean women. Methods : A population-based survey was carried out in Busan between November 1999 and March 2000. 1,673 participants were randomly selected from 2,684 women in Busan, using a 2-stage cluster sampling method, and interviewed in their homes. Their socio-demographic characteristics, smoking, drinking, familial cancer history, Pap smear screening history, reproductive and menstrual factors, sexual habits and use of contraceptive methods data were collected by a trained interviewer using a questionnaire. The use of the screening test was defined by a self-report from the participants on how many times they had had a Pap smear test in their lifetime, and when they had received their latest examination. Results : Of the 1,673 respondents (62.3% response rate), 57.6% had had a Pap smear test during her life (mean number, 2.3). Among the health examination participants(1,064), 961(90.3%) reported having sexual experience and 70.9% of these had had a Pap smear test. In a multiple logistic regression analysis, statistically significant relationships were observed for age groups and the Pap smear test rate (odds ratio, OR for 35-44 years=2.45; OR for 45-54 years=3.41; OR for 55 years=2.60; reference, under 34 years). The married or cohabiting women were more likely to have used the Pap smear test than those separated or widowed (OR=1.73). Among the reproductive behavioral measures, the number of births (OR for 3 births=4.22; OR for 2 births=3.95; OR for 1 births=3.38; reference, 0 births) and husband's extra-marital affairs (OR=1.50) were associated with the rates of use of Pap smear tests. Conclusion : It appears that the most important contributing factors to cervical cancer screening were age, marital status and number of births. A positive association was also observed for the husband's extra-marital affairs. This study enabled us to systematically assess the relationship between Pap smear rates and risk factors for cervical cancer. It is hoped that this study will make a significant contribution to the accumulating scientific evidence on the identification of factors associated with cervical cancer screening in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.171-179
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• 2020

This study was conducted to investigate the mediating effect of resilience in the relationship between satisfaction with clinical placement and role transition among nursing students. A descriptive survey with convenience sampling was conducted among senior year nursing students from two nursing colleges in C province. Data were collected using a self-administrated questionnaire, and a total of 135 samples were analyzed with the IBM SPSS 21.0 program using multiple regression by Baron's and Kenny's method. As a result, resilience was found to have a partial mediating effect on the relationship between satisfaction with clinical placement and role transition. The statistical significance of the mediating effect was verified using bootstrapping, and these variables explained 66% of role transition among nursing students. These results imply that promoting nursing students' resilience can be a valuable strategy to support successful role transition for nursing students.

• The Journal of the Korea Contents Association
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• v.17 no.4
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• pp.179-199
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• 2017

This research was conducted in a phenomenological method to explore what the meaning for marriage migrant women to have college experience is. In other words, It is to find out what the motivation for them to enroll the college is and what the experience of studying in college implies. Also, figuring out how the expectation for life after the college experience is built up structurally is the purpose of the research. To ensure the qualitative warranty of the research, the participants are selected by "Sampling and Data Collection Strategy" suggested by Miles & Huberman (1994); and those selected participants are six marriage migrant women in urban-rural area with 10~18 years of residence period. The information for this research had been collected by in-depth and additional interviews along with observation towards these six participants. The result is the following. First, the motivation for them to enroll the college is; to realize of one's dream, to have confident parental model, to pursuit stabilized domestic economy, to have a professional occupation, and to make it as a mean of searching one's career path. Second, the experience of studying in college implies; enhancing communication ability, establishing self-image in the family and its relationship, having confident in raising children, enhancing healthy living of family, enhancing human relations, and lifelong learning person through set of learning. Third, the structure of how it build the future life is; having independent life pursuing stable living economically, living as a confident Korean by pursuing the value of learning and having a life of human being.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.501-512
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• 2018

The aims of this study were to investigate the effects of verbal violence experienced during clinical practice, emotional responses, academic stress coping, and depression on professional self-concepts of nursing students. Data were collected through a self-reported structured questionnaire form given to nursing students in grades 3-4 using convenient sampling methods from October 25 to November 1, 2017. As a result, 41.9% of the subjects experienced verbal violence during clinical practice. The frequency of experiences for verbal violence was '1 time' at 16.9%, '2 times' at 15.5%, and '3 times' at 4.7%. The verbal violence attackers were patients (42.9%), nurses (37.7%), and protector (15.5%). Emotional response was positively correlated with depression and frequency of verbal violence. Academic stress coping had a negative correlation with depression and a positive correlation with professional self-concept. Depression was negatively correlated with professional self-concept. Multiple regression analysis showed that academic stress coping and depression were statistically significant variables in the professional self-concept, and these variables had a 28% explanatory power. Therefore, in order to improve the professional self-concept of nursing students, it is necessary to develop a strategy to raise the level of academic stress coping and to reduce depression.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.304-314
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• 2020

This cross-sectional descriptive study investigated the influence of romantic relationships' characteristics, self-esteem and sexual autonomy on limerence in dating relationships among female college students who had or were currently engaged in a dating relationship. The data was collected through self-reported structured questionnaires from 167 female Korean college students using convenient sampling methods from November 25, 2012 to December 20, 2012. The data was analyzed using t-tests, one-way analyses of variance, Scheffe's test, Pearson's correlation coefficients, and multiple linear regression analysis with the IBM SPSS 23.0 program. The results showed that a significant difference was found in limerence according to the frequency of experiencing romantic breakup (F=4.16, p=.003), and limerence in dating relationships was negatively correlated with self-esteem (r=-.31, p<.001) and sexual autonomy (r=-.21, p=.006). Self-esteem and the frequency of romantic breakups explained 20% of limerence in dating relationships among the participants (F=8.03, p<.001). Therefore, as a strategy to solve the problems related to limerence during the period of dating, cognitive and educational interventions are needed to strengthen the self-esteem and sexual autonomy of college students who have had a high number of separations. In addition, early screening of college students with risk factors for limerence and providing problem-solving based counseling will help improve their psychological health.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.8
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• pp.485-494
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• 2020

Club activities play an important role for college students in adapting to their college life. This study was therefore undertaken to investigate the effects of club activities on the communication skills and self-leadership of nursing students. Convenience sampling method was applied for 147 students enrolled in the nursing department of university in D city, of which 119 subjects participated in club activities. Data was collected from October 15 to November 30, 2019, and analyzed by applying 𝑥² test, t-test, and hierarchical multiple regression analysis, using the IBM SPSS/WIN 22.0 program. Results: Communication skill and self-leadership were above the middle level. Depending on the club activities, significant differences were obtained for grade (𝑥²=8.07, p=0.045), major satisfaction (𝑥²=8.26, p=0.010), and communication skill and behavior-focused strategies (t=4.48, p=0.036). Factors affecting communication skill were behavior-focused strategies, constructive thought pattern strategies, and activeness amongst club activities. Therefore, the numerous club activity experiences of subjects helped improve the communication skill which, in turn, helps improve self-leadership. Our study indicates the necessity to seek an educational strategy that encourages active club activities of nursing students, for improving the core competencies of professional nurses, encompassing communication skills and self-leadership.

• Journal of Distribution Science
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• v.15 no.7
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• pp.61-71
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• 2017

Purpose - This study empirically analyzed the effect of the customer orientation in Insurance Salespersons on the perceived referral risk and referral intention. In the empirical study, we try to provide suggestions for reducing the perceived referral risk of customer oriented selling activities and improving the referral intentions according to customers' tendencies. Research design, data, and methodology - Data collection was conducted through the convenience sampling method for customers who had insurance coverage for about two months from March to May 2015. A total of 700 copies were distributed and 670 copies (95.7% recovery) were collected. Finally, 661 copies were used for final analysis. With the IBM PASW 22.0 statistical program. The interaction effect for the hypothesis test was generated by multiplying the average centralized independent variable and the control variable, and the average centralization variable was used to minimize the multi-collinearity problem of the interaction effect between the independent variable and the control variables. Results - Hypothesis 1 was adopted because the effect of customer-oriented selling activities on perceived referral risk were significantly negative. The effect of customer orientation on perceived referral risk is affected by innovative tendency, risk-taking tendency, and interpersonal tendency Interaction effect was observed. Therefore, Hypothesis 2-2, Hypothesis 2-3, Hypothesis 2-4 were adopted. The effect of customer-oriented selling activities on referral intention was significantly positive, and Hypothesis 3 was adopted. The effect of customer orientation was influenced by the interaction effect of innovative tendency. Therefore, only Hypothesis 4-2 was adopted. Finally, the effect of perceived referral risk on referral intention was significantly negative and hypothesis 5 was adopted. Conclusions - This study suggests that it is important for the salespeople to grasp the customers' propensity in consideration of the perceived referral risk and referral intention according to the moderating effect of customer orientation. In this study, we showed that customer-oriented selling activities positively influence referral intention by inducing perceived referral risk in customers with stronger risk-taking tendencies. It is thought that it will be an important basic data in designing a customer's selling strategy or conducting selling activities.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.18
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• pp.8553-8557
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• 2016

Background: Accurate dose assessment and correct identification of irradiated from non-irradiated people are goals of biological dosimetry in radiation accidents. Objectives: Changes in the FDXR and the RAD51 gene expression (GE) levels were here analyzed in response to total body exposure (TBE) to a 6 MV x-ray beam in rats. We determined the accuracy for absolute quantification of GE to predict the dose at 24 hours. Materials and Methods: For this in vivo experimental study, using simple randomized sampling, peripheral blood samples were collected from a total of 20 Wistar rats at 24 hours following exposure of total body to 6 MV X-ray beam energy with doses (0.2, 0.5, 2 and 4 Gy) for TBE in Linac Varian 2100C/D (Varian, USA) in Golestan Hospital, in Ahvaz, Iran. Also, 9 rats was irradiated with a 6MV X-ray beam at doses of 1, 2, 3 Gy in 6MV energy as a validation group. A sham group was also included. After RNA extraction and DNA synthesis, GE changes were measured by the QRT-PCR technique and an absolute quantification strategy by taqman methodology in peripheral blood from rats. ROC analysis was used to distinguish irradiated from non-irradiated samples (qualitative dose assessment) at a dose of 2 Gy. Results: The best fits for mean of responses were polynomial equations with a R2 of 0.98 and 0.90 (for FDXR and RAD51 dose response curves, respectively). Dose response of the FDXR gene produced a better mean dose estimation of irradiated "validation" samples compared to the RAD51 gene at doses of 1, 2 and 3 Gy. FDXR gene expression separated the irradiated rats from controls with a sensitivity, specificity and accuracy of 87.5%, 83.5% and 81.3%, respectively, 24 hours after dose of 2 Gy. These values were significantly (p<0.05) higher than the 75%, 75% and 75%, respectively, obtained using gene expression of RAD51 analysis at a dose of 2 Gy. Conclusions: Collectively, these data suggest that absolute quantification by gel purified quantitative RT-PCR can be used to measure the mRNA copies for GE biodosimetry studies at comparable accuracy to similar methods. In the case of TBE with 6MV energy, FDXR gene expression analysis is more precise than that with RAD51 for quantitative and qualitative dose assessment.

• Journal of Digital Convergence
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• v.16 no.4
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• pp.95-105
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• 2018

This study empirically test the roles of network closure and structural hole on radical innovation in technological knowledge exchange network in Gumi cluster. In doing so, we build 2,550 firm network, transforming association*firm(2-mode) to firm*firm(1-mode) network data. In addition, in order to investigate firms' attributes, we conduct survey for 101 firms in Gumi cluster using random sampling, and finally collect 86 firm samples. For analysis, we use ridge regression since network density and efficiency, indices of network closure and structural hole respectively, has a high level of multicollinearity. The findings show that structural hole has a significant and positive impact on radical innovation, but network closure has a significant and negative impact on radical innovation. This study contributes to present an empirical evidence of debate on network closure and structural hole based on past conceptual discussions and literature review and further goes a long way towards strategy formulation to establish social capital in accomplishing radical innovation. Further research is required that pays closer attention to features of technological knowledge, innovation types and interaction between network closure and structural hole, directing efforts to structural characteristics of various networks.