• Restorative Dentistry and Endodontics
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• 제42권4호
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• pp.301-308
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• 2017

Objectives: It was aimed to compare the cyclic fatigue resistances of ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG) and the effects of sterilization by autoclave on the cyclic fatigue life of nickel-titanium (NiTi) instruments. Materials and Methods: Eighty PTU, 80 PTN, and 80 PTG were included to the present study. Files were tested in a simulated canal. Each brand of the NiTi files were divided into 4 subgroups: group 1, as received condition; group 2, pre-sterilized instruments exposed to 10 times sterilization by autoclave; group 3, instruments tested were sterilized after being exposed to 25%, 50%, and 75% of the mean cycles to failure, then cycled fatigue test was performed; group 4, instruments exposed to the same experiment with group 3 without sterilization. The number of cycles to failure (NCF) was calculated. The data was statistically analyzed by using one-way analysis of variance and post hoc Tukey tests. Results: PTG showed significantly higher NCF than PTU and PTN in group 1 (p < 0.05). Sterilization significantly increased the NCF of PTN and PTG (p < 0.05) in group 2. PTN in group 3 had significantly higher cyclic fatigue resistance than PTN group 4 (p < 0.05). Also, significantly higher NCF was observed for PTG in group 2 than in groups 3 and 4 (p < 0.05). Conclusions: PTG instrument made of new gold alloy was more resistant to fatigue failure than PTN and PTU. Autoclaving increased the cyclic fatigue resistances of PTN and PTG.

• 대한한방부인과학회지
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• 제21권1호
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• pp.242-256
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• 2008

Purpose: The purpose of this study is to find out the relation of oriental medicine examination(Inbody, HRV, PTG) and FSH, LH. Methods: We have carried out clinical trials who volunteered for Sasang constitutional medicine and Oriental OB & GY, Oriental Medical hospital of Dong-Eui University from November 2005 to January 2006. Women of Volunteers were 129 persons. Because 7 persons didn't exam oriental examination so we analyzed the results statistically for 122 persons. Results: 1. Inbody & FSH, LH In the relation of FSH correlation with results of Waist-Hip Ratio, Visceral Fat Area was increased(+direction), in the relation of LH correlation with results of Edema, Visceral Fat Area was increased (+direction). 2.The fluents of HRV & FSH, LH In the relation of FSH, LH correlation with results of SDNN, RMS, TP, VLF, LF, HF was decreased (-direction). 3.The fluents of PTG & FSH, LH In the relation of FSH, LH correlation with results of the fluents of PTG was decreased (-direction), with results of b_a was increased (+direction), with results of d_a was decreased (-direction). Conclusion: From this study, Inbody and HRV and PTG are corelation with FSH, LH.

• 대한간호학회지
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• 제46권3호
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• pp.454-462
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• 2016

Purpose: Posttraumatic growth (PTG) is defined as 'positive psychological change experienced as a result of a struggle with highly challenging life circumstances'. The purpose of this study was to identify the level of PTG and its correlates in Korean patients with breast cancer. Methods: A sample of 120 participants was recruited from outpatients, who had successfully completed primary treatment of breast cancer at a university hospital., Data were collected from June to December, 2014 using Posttraumatic Growth Inventory, Illness Intrusiveness Rating Scale, Cancer Coping Questionnaire, Revised Life Orientation Test and The Multidimensional Scale of Perceived Social Support. Results: Total score for the PTG was $79.18{\pm}17.54$ in patients surviving breast cancer. Bivariate analyses indicated that PTG was positively associated with having a religion, perceived social support, greater optimism, cancer coping, and illness intrusiveness. Results of the regression analysis showed that cancer coping (${\beta}=.29$, p=.001), optimism (${\beta}=0.28$, p=.001) and illness intrusiveness (${\beta}=0.17$, p=.037) were statistically significant in patients' PTG. Conclusion: The research findings show that the variables of cancer coping, optimism and illness intrusiveness significantly explain PTG and these psychological variables can be used to provide improvement in PTG for patients with breast cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제13권9호
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• pp.4311-4314
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• 2012

Posttraumatic growth (PTG) is the experience of positive change that occurs as a result of the struggle with highly challenging life crises. The need to understand PTG in relation to actual changes in an individual's life has recently been raised. Little is known about the role of social support in the experience of positive outcomes. The purpose of this study is to investigate the role of perceived social support in enhancing PTG in cancer patients. This study involved 105 cancer patients. The data were collected using a questionnaire that determined the socio-demographic features, posttraumatic growth inventory (PTGI) and perceived social support. Participants reported relatively high levels of PTG and social support. Total perceived social support, support from family, and friends were significantly positive associated with the development of PTG among cancer patients. Accordingly, the social surroundings of the patient should be informed about the importance of social support and how it helps the patient; they should be made aware of necessity of social support.

• 한국의사학회지
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• 제34권1호
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• pp.59-74
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• 2021

Li Gao left a great mark in the history of Chinese medicine by founding Piwei (脾胃) theory. When explaining Li Gao's medical ideology, researchers explain that his medical ideology was created by curing hunger during wartime and treating diseases of people who suffered from battle field trauma. However, Li Gao also suffered from battlefield trauma for his experience of the Mongol siege of Kaifeng (開封城) from 1232 to 1233. It is the hypothesis of this study that Li Gao himself would have suffered posttraumatic stress disorder (PTSD), and this study reexamines the process more closely from the viewpoint of PTSD and posttraumatic growth (PTG). The conclusion of this study is that his achievement in medical history is a result of his PTG. Li Gao's narrative of Piwei (脾胃) theory contains elements that seek revenge against the Mongol soldiers, and Li Gao achieved extraordinary PTG by overcoming the trauma of the siege of Kaifeng step by step.

• 사회복지연구
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• 제39호
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• pp.29-56
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• 2008

본 연구는 남한에 장기 거주하는 북한 이탈 주민의 외상 경험 이후 심리적 성장 요인을 이해하기 위해서 실시되었다. 이를 위해서 남한 거주기간이 평균 7년 이상되는 탈북 주민 105명을 대상으로 외상 경험 이후 심리적 성장, 인구사회학적 요인, 개인 및 사회적 요인, 정신건강 요인, 북한 및 탈북과정의 외상과 남한 사회 스트레스를 측정하여 관련 변인들의 영향력을 분석하였다. 그 결과 북한에서의 학력과 제3국에서의 거주기간에 따라 PTG에 유의한 차이가 있었다. 탈북일, 우울, 문화적응스트레스, 미래에 대한 희망, 남한출신으로부터의 사회적지지, 인식된 만족은 PTG 와 유의한 상관이 있었다. PTG 예측요인으로 탈북일, 제3국체류기간, 문화적응스트레스 그리고 남한출신으로부터의 사회적지지로 나타났다. 이러한 연구결과를 바탕으로 정신건강 및 사회정책적 개입의 필요성을 논의하였다.

• 한국구조물진단유지관리공학회 논문집
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• 제25권6호
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• pp.199-208
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• 2021

3D 프린팅 콘크리트의 출력성능 및 부재 강도는 물시멘트비(Water cement ratio, W/C)와 레이어의 프린팅 시간 간격(Printing Time Gap, PTG)에 의하여 큰 영향을 받을 수 있다. 이 연구에서는 W/C와 PTG를 변수로 하여 제작된 프린팅실험체와 몰드 실험체의 표면수분량과 전단부착강도와의 관계를 측정·고찰하였으며, 그 결과, 레이어표면수분량이 전단부착강도에 큰 영향을 주는 것으로 나타났다. 따라서, 3D 프린팅 출력 시 요구되는 레이어 계면 전단부착성능을 확보하기 위해서는 PTG에 따라 적절한 레이어표면수분량이 유지될 수 있도록 유의해야 하며, 레이어표면수분량에 영향을 줄 수 있는 여러 가지 프린팅 환경인자들 대한 후속 연구도 필요할 것으로 판단된다.

• 중환자간호학회지
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• 제15권2호
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• pp.50-63
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• 2022

Purpose : This study aimed to identify intensive care units (ICU) nurses' experience of traumatic events, deliberate rumination, self-disclosure, social support, and post-traumatic growth (PTG), and to explore relationships among the variables. Methods : Participants were 157 nurses who have provided direct patient care for six months or more in ICUs at a university hospital. Collected data were analyzed using descriptive statistics, independent t-tests, one-way ANOVAs, Pearson correlations, and multiple linear regressions using the SPSS/WIN version 23.0. Results : The PTG was found to be significantly associated with deliberate rumination (r=0.36, p<.001), self-disclosure (r=0.39, p<.001), and social support (r=0.54, p<.001). Factors that affect PTG significantly were found in the order of social support (𝛽=0.40, p<.001), self-disclosure (𝛽=0.25, p<.001), and deliberate rumination (𝛽=0.24, p<.001). The final regression model explained 40.1% of the variance of PTG (F=26.33, p<.001). Conclusion : The influencing factors identified in this study on PTG, including social support, self-disclosure, and deliberate rumination should be included in programs to promote PTG for ICU nurses who may experience traumatic events repeatedly.

• 한국심리학회지ㆍ일반
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• 제36권2호
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• pp.241-270
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• 2017

본 연구는 성인 1,000명을 대상으로 트라우마 이전(pretrauma)의 성격적 특성인 성격 5요인, 외상 후 인지, 반추, PTSD 증상, 외상 후 성장간의 구조적 관계를 살펴보자 하였다. 이를 위해 본 연구에서는 성격 5요인이 외상 후 인지와 침습적 반추를 거쳐 의도적 반추에 영향을 주는 경로가 포함된 가설적 연구모형과 침습적 반추에서 의도적 반추로 가는 경로가 제외된 경쟁모형을 각각 설정하였다. 연구결과 첫째, 외향성, 우호성, 성실성은 외상 후 성장과 PTSD 증상 간에 외상 후 인지 및 반추의 매개효과가 유의하지 않았다. 둘째, 개방성은 PTSD 증상 및 외상 후 성장으로 가는 경로에서 침습적 반추와 의도적 반추가 순차적으로 매개하는 것으로 밝혀졌다. 셋째, 신경증적 경향성은 PTSD 증상 및 외상 후 성장으로 가는 경로에서 외상 후 인지, 사건관련 반추가 순차적으로 매개하는 것으로 밝혀졌다. 본 연구결과는 외상 후 성장모델의 인지과정을 지지하는 것으로 나타났다. 본 연구의 결과에 근거하여 의의와 한계점에 대하여 논의하였다.

• 한국항공운항학회지
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• 제29권3호
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• pp.1-14
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• 2021

This study examined the mediating role of cognitive emotion regulation in the relationship between calling and posttraumatic growth (PTG) and the moderating role of transformational leadership among Air Force pilots. A total of 215 ROK Air Force pilots participated in this study twice with an interval of 4 weeks. The results of this study were as follows. First, calling, transformational leadership, adaptive emotion regulation, and PTG showed statistically significant correlations. Second, a mediating model showed that the relationship between calling and PTG was mediated by adaptive emotion regulation. Third, the moderation effect of transformational leadership in the relationship calling on adaptive emotion regulation was found. Finally, transformational leadership also moderated the mediating effect of calling on PTG through adaptive emotion regulation was identified. Implications, limitations, and future research suggestions were discussed.