• 한국산학기술학회논문지
• /
• 제15권10호
• /
• pp.6142-6149
• /
• 2014

본 연구는 심리적 안녕감, 정서표현성, 교우관계가 중학생의 성별에 따라 차이가 있는지와 함께 이들 변인들 간의 관계를 알아보고자 한 것이다. 본 연구의 대상은 경기도에 소재한 중학교에 다니고 있는 2학년 학생 391명으로, 수집된 자료를 t 검증과 Pearson의 상관분석 및 단계적 중다회귀분석을 활용하여 분석하였다. 분석결과, 중학생의 심리적 안녕감과 정서표현성 및 교우관계에서 유의한 성차가 나타났는데 모든 변인에서 여학생이 남학생에 비해 유의하게 높은 것으로 나타났다. 심리적 안녕감과 정서표현성 및 교우관계는 서로 상관이 있었으며, 교우관계에 영향을 미치는 변인은 심리적 안녕감과 정서표현성의 하위 요인인 긍정적 정서표현과 부정적 정서표현이었다. 본 연구결과는 중학생의 교우관계를 증진시킬 수 있는 방안을 모색하는데 시사점을 제공한다.

• 임상간호연구
• /
• 제26권1호
• /
• pp.86-96
• /
• 2020

Purpose: The purpose of study was to provide basic data for developing interventions that could help middle-aged adults prepare for dignified death in the future by examining their attitudes toward death and advance directives (AD), and knowledge of AD. Methods: Data were collected through a survey of 211 middle-aged adults from January 28 to February 28, 2019, in a city located in Gangwon Province. To analyze the data, descriptive statistics, t-test, one-way ANOVA, Scheffé test, Pearson's correlation coefficient and stepwise linear regression were utilized using SPSS/WINdows 21.0. Results: The average score of the participants' attitudes toward death and AD, and knowledge of AD was 91.82±10.89, 15.53±4.27, 46.00±9.45, respectively. There were positive correlations between attitudes toward dignified death and attitudes toward AD, and knowledge of AD. Factors that influence attitudes toward AD were shown in the order of attitudes toward dignified death, knowledge of AD, and intentions to write AD (Adjusted R²=.24). Conclusion: For the dignified death in the future, it is necessary to provide middle-aged adults with an opportunity to think about the need of AD. In addition, extensive education and promotion of AD are required to correct the misunderstanding of AD.

• Bulletin of the Korean Chemical Society
• /
• 제17권9호
• /
• pp.802-807
• /
• 1996

Second-order rate constants have been measured spectrophotometrically for the reactions of aryl benzoates (X-C6H4CO2C6H4-Y) with EtO-, Z-C6H4O- and Z-C6H4C(Me)=NO- in absolute ethanol at 25.0 ℃. All the reactions have been performed in the presence of excess 18-crown-6 ether in order to eliminate the catalytic effect shown by alkali metal ion. A good Hammett correlation has been obtained with a large ρ- value (-1.96) when σ- (Z) constant was used for the reaction of p-nitrophenyl benzoate (PNPB) with Z-C6H4O-. Surprisingly, the one for the reaction of PNPB with Z-C6H4C(Me)=NO- gives a small but definitely positive ρ- value (＋0.09). However, for reactions of C6H5CO2C6H4-Y with EtO-, correlation of log k with σ- (Y) constant gives very poor Hammett correlation. A significantly improved linearity has been obtained when σ0 (Y) constant was used, indicating that the leaving group departure is little advanced at the TS of the RDS. For reactions of X-C6H4CO2C6H4-4-NO2 with EtO-, C6H5O- and C6H5C(Me)=NO-, correlations of log k with σ (X) constants for all the three nucleophile systems give good linearity with large positive ρ values, e.g. 2.95, 2.81 and 3.06 for EtO-, C6H5O- and C6H5C(Me)=NO-, respectively. The large ρ values clearly suggest that the present reaction proceeds via a stepwise mechanism in which the formation of the addition intermediate is the RDS.

• 한국의류학회지
• /
• 제43권1호
• /
• pp.125-137
• /
• 2019

This study determined the impact of 'Fashion Augmented Reality (FAR)' acceptance factors based on the model of acceptance and use of technology (UTAUT) on consumer attitudes, intention to use technology, and fashion product purchase intention. A survey asked participants to have an AR experience using a FAR app to understand FAR in advance. Data were analyzed factor analysis and stepwise regression using SPSS. The results are as follows. First, the factor analysis classified the acceptance variables of FAR technology into 'social relations', 'shopping effectiveness', and 'easy to use FAR'. Second, among the three factors of FAR acceptance, 'shopping effectiveness' is statistically more influential on positive attitudes towards FAR. However, 'easy to use' factor was more influential on 'the intention to use technology' as well as 'purchase intention'. Third, 'social relations' were identified as an important factor affecting 'consumer attitudes', 'intention to use technology' and 'purchase intention' which are not well covered in fashion technology research. In addition, 'the intention to use technology' was found to be influential on 'purchase intention' and indicated the importance of easiness of FAR to enhance purchase intention.

• Bulletin of the Korean Chemical Society
• /
• 제11권4호
• /
• pp.276-281
• /
• 1990

The equivalent conductance of univalent cation (potassium, silver, thallium and ammonium) perchlorates in methanol containing 18-membered crown ethers, 18-crown-6 (18C6) and 1,10-dithia-18-crown-6 (DT18C6) were measured at different temperatures. The equivalent conductances of ammonium perchlorate were increased by increasing content of DT18C6 exceptionally, due to more favorable solvations than complexations. From the equivalent conductance changes, the formation constants for 1:1 compmlexes have been determined, and the values of enthalpy and entropy changes have been calculated. The complexations of 18C6 and DT18C6 with the univalent cations under investigation are all exothermic and the ${\Delta}$S values are all negative and no considerable differences around 50 J/ (k mol). The selectivity order of 18C6 is $K^+ > Tl^+ > Ag^+ > NH_4^+$, while that of DT18C6 is $Ag^+ > Tl^+ > NH_4^+ > K^+$. By sulfur substitutions in 18C6 result in significant decrease in stability, but the stability of $Ag^+$-DT18C6 complex are $10^4$ times larger than those of $K^+$. This increase of stabilities for $Ag^+$-DT18C6 complex are primary due to the result of favorable exothermic heat of reaction between the polarizable soft cation and soft sulfur centers. In NMR experiment, the stepwise additions of cation perchlorates into crown ether solutions induced two major spectral changes. First, the resonance all shift down field and the cation induced shifts were linear up to 1:1 cation/crown ratio, above which no further changes were observed. On the basis of these results, it could be concluded that 1:1 complex is formed. Second, the magnitudes of cation induced shifts were different each other in same ligand. By addition of silver ion to the solution of DT18C6, the largest shift of proton peak near the sulfur atom was observed. These effects are also arisen from the results of covalent bonding between "soft-soft" interactions.

• 농촌의학ㆍ지역보건
• /
• 제46권2호
• /
• pp.89-97
• /
• 2021

대상자의 인구사회학적 특성에 따른 성공적 노화의 차이는 나이에 따라서 차이가 있었고, 대상자의 성공적 노화는 기억과 정적관계가 있고, 심리사회적 스트레스와 부적관계가 있었다. 심리사회적 스트레스와 기억 간에 부적 관계가 있었다. 성공적 노화에 영향을 주는 요인은 심리사회적 스트레스로 나타났다. 따라서 본 연구의 결과는 지역사회 노인의 심리사회적 스트레스가 성공적 노화를 예측하는 중요한 변인임을 입증했다는 점에서 의미가 있다. 따라서 노인의 성공적 노화를 위한 스트레스 개입 프로그램의 경험적 근거자료가 될 수 있다.

• 임상간호연구
• /
• 제28권1호
• /
• pp.34-44
• /
• 2022

Purpose: The purpose of this study was to examine the level of Person-centered Critical Care Nursing (PCCN) and the factors influencing PCCN for nurses in Intensive Care Units (ICU). Methods: This study was designed by cross-sectional descriptive correlational study. The participants included 147 ICU nurses in two general hospitals in Seoul, Korea. Demographic characteristics, PCCN, communication skills, professionalism, and work environment were measured. The collected data were analyzed using descriptive statistical analysis, independent t-test, One-way ANOVA, Pearson's correlation coefficient, and stepwise multiple linear regression with the SPSS/Win 25.0 program. Results: The average age of the participants was 29.6±4.7 years and the mean work experience in the ICU was 4.67±3.52 years. The level of PCCN was 3.70±0.41, which was moderate to high, and it significantly showed a positive correlation with therapeutic communication skills (r=.66, p<.001), global interpersonal communication competence (r=.42, p<.001), professionalism (r=.38, p<.001), and work environment (r=.16, p=.048). The factors influencing PCCN were identified as therapeutic communication skill and global interpersonal communication competence (Adj R²=.45, p<.001). Conclusion: The findings of this study were confirmed that the strategies to promote PCCN are necessary to enhance therapeutic communication skill and global interpersonal communication competence. In addition, they may be particularly meaningful in providing basic data for nursing education and future intervention development research to promote PCCN for the ICU nurses. For improving PCCN for healthcare providers in ICU, further studies should be conducted to develop education and intervention programs.

• 대한불안의학회지
• /
• 제18권1호
• /
• pp.17-25
• /
• 2022

Objective : The aim of this study was to investigate the prevalence of anxiety symptoms and its association with psychological factors in patients with hypertension. Methods : The Participants included 124 patients with hypertension. Anxiety symptoms were evaluated by the Hospital Anxiety and Depression Scale. Socio-demographics, perceived stress, state-trait anger, life satisfaction, and ego resiliency were assessed. Stepwise multiple regression analyses were carried out to examine the impact of perceived stress, state-trait anger, and life satisfaction on anxiety symptoms. In addition, moderated regression analysis was performed to explore the moderating effect of ego resiliency between perceived stress and anxiety symptoms. Results : A total of 17 subjects (13.7%) were identified as having anxiety symptoms. Higher perceived stress and state-trait anger, and lower life satisfaction were found to be significant correlates of anxiety symptoms. In the final model, higher levels of perceived stress (β=0.378, p<0.001) and trait anger (β=0.320, p<0.001) were related to higher levels of anxiety symptoms, while a higher level of life satisfaction (β=-0.166, p=0.025) was associated with a lower level of anxiety symptoms. Further, ego resiliency buffered the negative effect of perceived stress on anxiety symptoms. Conclusion : This study demonstrated the prevalence of anxiety symptoms and associated psychological factors among patients with hypertension. Our findings suggest that improving life satisfaction and ego-resiliency as well as controlling stress and anger may be important in the management of anxiety symptoms in patients with hypertension.

• 한국융합학회논문지
• /
• 제13권2호
• /
• pp.281-291
• /
• 2022

본 연구는 간호대학생의 유방자가검진 수행에 미치는 영향 요인을 통계적으로 분석한 서술적 조사연구이다. 자료수집 기간은 2021년 4월 12일부터 4월 26일이었고, 간호대학생 240명을 편의 추출 후 구조화된 설문지를 이용하여 조사하였다. 수집된 자료는 SPSS/WIN 25.0 프로그램을 통해 Pearson's correlation coeffcients, 단계적 다중회귀분석을 이용하여 분석하였다. 본 연구결과, 유방자가검진 수행에 미치는 영향 요인은 유방자가검진 여부와 식행동이었고, 설명력은 14.2%이었다(F=19.53, 𝜌<.001). 간호대학생의 유방자가검진의 지속적인 수행을 도울 수 있는 교육과 프로그램이 요구되며, 간호대학생 스스로 올바른 식행동에 관심을 가지고 실천할 수 있도록 식생활을 평가하고, 유방암을 예방하기 위한 프로그램의 개발 및 효과에 대한 연구가 필요하다.

• 한국환경과학회지
• /
• 제32권2호
• /
• pp.121-130
• /
• 2023

This study was conducted to investigate changes in seed vigor based on temperature of dry heat and duration treatment of watermelon seeds and examine the effect on percent of emergence and seedling vigor. When the upper limit temperature of dry heat treatment was raised to 80℃, the percent of the germination decreased. Moreover, T₅₀ was delayed as the upper limit temperature of dry heat treatment increased. The higher the upper limit temperature of dry heat treatment and the longer the treatment period, the higher the percentage of abnormal seedlings. The optimum upper limit temperature for dry heat treatment was 72℃, and the treatment period was five days. Seed vigor was better maintained at 30℃, 45℃, and 52℃, followed by stepwise exposure to high temperatures of 72℃, the upper limit of dry heat treatment, rather than dry heat treatment at a high temperature of 72℃ for 5 days from the initial stage of treatment. When the fungicide was added during the dry heat treatment process, the germination percentage decreased and the percent of the abnormal seedling percentage increased. However, the addition of 10 mg/kg fungicide did not significantly reduce seed vigor.