• 가정과삶의질연구
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• 제33권4호
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• pp.67-82
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• 2015

The study examined whether informal and formal social participations may mediate the association between widowhood and depressive symptoms, and whether gender may moderate the mediated associations. The data consisted of men and women 65+ who participated in the $3^{rd}$ wave of the Koran Longitudinal Study of Aging (KLoSA ; N = 4,146). Findings suggest that first, widowed older adults experienced significantly higer levels of depressive symptoms compared to their married counterparts. At the same time, the widowed individuals also reported more frequent contacts with family, friends, and neighbors (informal social participation), which contributed to narrowing the depression gap between widowed and married. Second, gender moderated the mediated association such that the mediating effect of informal social participation was significant only for older widowed women. Further, no mediating effect was found of formal social participation (participation in social, leisure, religious groups) for widowed and married regardless of gender. Previous studies indicated that social participation may be an important mediating factor that attenuates the effect of widowhood on depressive symptoms. Building on existing research, the present study highlighted theoretical rationales for potential gender differences in the way social participation may mediate the widowhood-depression linkage and evaluated statistically whether gender may moderate the mediated association.

• Human Ecology Research
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• 제53권5호
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• pp.503-517
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• 2015

This study examined the relationships among children's perspectives on achievement-oriented parenting style, ego-resilience, school adjustment, and academic achievement. In order to analyze the associations, the study conducted a secondary analysis of the data found in the Korean Children and Youth Panel Survey (KCYPS) 2010-2011, which was a non-randomized controlled study designed with a longitudinal follow-up. We analyzed 1,212 students who were in the fourth and fifth grade at elementary school with Structural Equation Modeling (SEM). The results were as follows. First, higher achievement-oriented parenting style was associated with higher ego-resilience that contributed to higher academic achievement and higher school adjustment. Second, higher achievement-oriented parenting style was directly related to lower academic achievement and lower school adjustment. The findings support that children's ego-resilience is an important factor to improve school adjustment and academic achievement. In addition, the achievement-oriented parenting style is not helpful for their children's school outcomes (such as academic achievement and adjustment) even though parenting style improved their children's ego-resilience. Ego-resilience that is developed by achievement-oriented parenting style is likely to enhance children's school adjustment and academic achievement. The study presents policy and practice implications, limitations and areas for further research.

• 말소리와 음성과학
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• 제7권2호
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• pp.63-73
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• 2015

This study investigated longitudinally early vocalization and phonological developments of typically developing children. Ten typically developing children participated in the study from 9 months to 18 months of age. Spontaneous utterance samples were collected at 9, 12, 15, 18 months of age and phonetically transcribed and analyzed. Utterance samples were classified into 5 levels using Stark Assessment of Early Vocal Development-Revised(SAEVD-R). The data analysis focused on 4 and 5 levels of vocalizations classified by SAEVD-R and word productions. The percentage of each vocalization level, vocalization length, syllable structures, and consonant inventory were obtained. The results showed that the percentages of level 4 and 5 vocalizations and word significantly increased with age and the production of syllable structures containing consonants significantly increased around 12 and 15 months of age. On average, the children produced 4 types of syllable structure and 5.4 consonants at 9 months and they produced 5 types of syllable structure and 9.8 consonants at 18 months. The phonological development patterns in this study were consistent with those analyzed from children's meaningful utterances in previous studies. The results support the perspective on the continuity between babbling and early speech. This study has clinical implications in early identification and speech-language intervention for young children with speech delays or at risk.

• 대한간호학회지
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• 제49권6호
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• pp.713-723
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• 2019

Purpose: The purpose of this study was to identify the impact of cigarette smoking and alcohol consumption on the incidence of colon cancer in adults with metabolic syndrome. Methods: This study employed a longitudinal study design and utilized secondary data drawn from the Korean Genome and Epidemiology Study (KoGES). The data of a sample of 2,327 adults with metabolic syndrome tracked every two years from 2001 to 2014 were used in this study. Statistical data analyses of the frequency, number of cases per 100,000 person-years, log-rank test, Kaplan-Meier curve, and Cox's proportional hazards regression were performed using IBM SPSS statistics version 24. Results: During the observation period, the number of colon cancer cases was 46, and the total person-years were 252,444. The incidence of colon cancer was higher in current, over 10 pack-year smokers when compared to non-smokers (hazard ratio=3.38, 95% confidence interval=1.09~8.42). Conclusion: Excessive and long-term smoking should be avoided to prevent colon cancer, especially in adults with metabolic syndrome, since it might exacerbate the risk factors of colon cancer. Particularly, health professionals need to provide individualized smoking cessation interventions to those at high risk of colon cancer.

• 한국결정학회:학술대회논문집
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• 한국결정학회 2002년도 정기총회 및 추계학술연구발표회
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• pp.3-3
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• 2002

Many studies on crystal growth mechanisms of the hen egg-white lysozyme protein crystals have mainly performed by optical microscopy and atomic force microscopy (AFM). As results, two types of growth mechanisms, which are a two-dimensional nucleation mechanism and a spiral growth mechanism, were identified. However, there was no direct evidence of grown-in screw dislocations at the spiral sites. We first observed the screw dislocations in tetragonal lysozyme crystals using synchrotron X-ray topography. In addition, to confirm the characteristics of dislocations, we have observed some elastic constants in lysozyme crystals in terms of the sound velocity measurement by pulse echo methods. Tetragonal hen egg-white lysozyme crystals were grown by the concentration gradient method. The crystals were grown in test tubes, with an inner diameter of 8 ㎜ and 80 ㎜ in length, held vertically. The test tubes were kept at 23C for 2 weeks. The maximum size of crystals were 3×3×4 ㎟. The high quality crystals were examined by Laue topography with a water filter using synchrotron radiation. Figure is a X-ray topograph. Several straight screw dislocations were observed. We also determined Burgers vector to be a [110] direction. The measurement of sound velocity was performed by the digital signal processing method. the crystals were placed in stainless steel vessel, which was filled with lysozyme solution used for crystal growth. We observed the longitudinal sound velocity along the [110] direction in the tetragonal is obtained to be 1817 ㎧. Therefore, Young modulus and shear modulus were evaluated to be 2.70 Gpa and 1.02 Gpa, respectively, if we assumed Poisson ratio is 0.33. These results will be discussed at the meeting.

• 대한기계학회논문집A
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• 제27권1호
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• pp.34-41
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• 2003

Finite element analysis of end-to-end artery/PTFE anastomosis recently have been researched. But, these studies were carried out without the compensation for the error of finite element analysis and assumed the artery and PTFE as the simple cylindrical shape in spite of being the fatty tissue which covers the heart. Therefore, we performed the convergency study with respect to increasing the element numbers and considered the fatty tissue as the elastic foundation in the finite element analysis. The results are as fallow ： 1. An anastomosis with the thinner thickness and larger diameter PTFE than artery could reduce the compliance disagreement. 2. A fatty tissue was affected to reduce the compliance mismatch in the vicinity of anastomosis of different material. Therefore a hypercompliant zone become narrorw and a compliance discrepancy decrease between the artery and the PTFE about 70%. And radial displacement with respect to longitudinal direction of an artery and the PTFE anastomosis was similar to a sectional compliance.

• Journal of Acupuncture Research
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• 제18권6호
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• pp.84-92
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• 2001

Objectives : We defined that the ruptured disc is extruded trans ligamentous through the posterior longitudinal ligament or sequestrated. The authors have experienced 12 cases of ruptured disc that underwent the conservative treatment. We studied the effect and possibility of the conservative treatment for the ruptured disc. Methods : The patients with ruptured disc have underwent the conservative treatment. After the treatment, we compare pre-treatment with post treatment in the view of state of patients' ambulation and physical conditions. Results : In this study, 12 cases of ruptured disc have underwent the conservative oriental treatment. After the treatment, 75% of the cases were improved above good state Conclusion : The ruptured disc has been operated universally. Except the emergency state, the conservative treatment is helpful to improve the symptoms of the patients with ruptured disc.

• 한국농촌간호학회지
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• 제6권1호
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• pp.5-14
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• 2011

Purpose: The primary goal of this study was to develop a case management with exercise program for community dwelling elders who live alone, and examine the effects of the program. Method: The design of this research was a one group pre-post test study. The participations were 85 elders diagnosed with hypertension and diabetes mellitus and who lived alone as residents of D city. The case management with exercise program included exercise and counseling as the intervention and was provided for 12 weeks. Data were collected before and after the intervention which lasted from September 3 to November 26, 2009. Collected data were analyzed using descriptive statistics, and paired t-test. Results: There were significant differences in blood pressure (t=-5.24, p<.001, t=-1.94, p= .040), fasting blood sugar (t=-4.41, p<.001), ADL (t=-5.43, p=.022) and cognitive function (t=7.41, p=.008) between pre- and post intervention. Conclusion: These results indicate that the case management program is an important intervention for health promotion for community-dwelling elders, and exercise improves functional status of older persons with diseases. Therefore, now is the time to develop new supportive community-based programs for elders who live alone. However, it is also necessary to do further longitudinal studies to confirm the results of this study.

• 한국병원경영학회지
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• 제20권1호
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• pp.39-52
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• 2015

This study provides empirical evidence for the role of IT professional's expertise in hospital IT service encounters. It is posited here that IT professional's technological expertise and business expertise are associated with relationship quality(trust, satisfaction, commitment). Partial least square analyses are conducted, using data collected from 216 hospital workers. The results confirm that technological expertise strongly impacts on commitment and business expertise maintain a strong impact on satisfaction and trust. This study uses a cross-sectional survey as a research method. Longitudinal study seems necessary to further explore how expertise perception is actually formed between IT professionals and users in hospital service environments. The analysis also reveals that it takes time to grow relationship quality. Implications are discussed, and further studies are suggested.

• 가정과삶의질연구
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• 제33권5호
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• pp.25-35
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• 2015

The purpose of this study was to investigate how work-family spillover differed by employment status of married women and to identify factors related to the differences. This study drew a sample of 332 self-employers, 181 unpaid family workers, and 1,053 wage workers from the 2014 Korean Longitudinal Survey of Women and Families. It was found that negative work-family spillover did not differ by employment status of married women. However, positive work-family spillover was found the lowest in family workers. The regression analysis showed that the difference remained after controlling socio-demographic characteristics, average working hours, and the number of days off per week. The factors related to negative spillover were age, the presence of young children, working hours, and the number of days off. Findings from this study suggest that family workers are most disadvantaged in terms of work-family spillover. Yet there is no policy developed for them. Family policy needs to take them into account in planning and implementing services.