[김현승 시선] 눈물 외 8편

김현승 문예운동사 2016 문예운동 Vol.- No.129

Effects of Social Support and Self-Efficacy on the Quality of Life of Elderly People

김현승,조성현 물리치료재활과학회 2022 Physical therapy rehabilitation science Vol.11 No.3

Objective: This study investigated how social support and self-efficacy affect the quality of life of elderly people with chronic diseases. Design: The study consisted of descriptive survey research. Methods: A questionnaire covering social support, self-efficacy, and quality of life was distributed to 320 elderly people with chronic diseases. Pearson’s correlation analysis was performed to examine the correlation between the respondents’ social support (family support, friend support, medical support), self-efficacy (confidence, self-regulation efficacy, preference for task difficulty), and quality of life. Multiple regression analysis was also performed to identify the factors affecting the respondents’ quality of life. Results: “Friend support" and “quality of life” (r=-636, p<0.001), had a negative correlation, “confidence” and “quality of life” (r=0.827, p<0.001), “self-regulating efficacy” and “quality of life” (r=0.736, p<0.001), and “preference for task difficulty” and “quality of life” (r=0.295, p<0.001)—had positive correlations. Friend support (β=-0.164, p<0.001), confidence (β=0.592, p<0.001), and self-regulation efficacy (β=0.160, p<0.001) were found to affect quality of life. The independent variables showed the following degrees of influence, in order: confidence, friend support, and self-regulation efficacy. Their explanatory power was 73.3% (F=146.844, p<0.001). Conclusions: The quality of life of elderly people with chronic diseases can be improved by formulating health-promotion programs that foster a sense of community.

TCS 및 WIM 자료를 활용한 고속도로 물동량 지표 개발에 관한 연구

김현승,오정화,박동주 한국ITS학회 2016 한국ITS학회 학술대회 Vol.2016 No.10

Combining Chemical and Physical Cross-linking of Self-healing Hydrogel for 3D Bioprinting

김현승,문창욱,이근용 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2

Three-dimensional (3D) bioprinting technique has attracted much attention to construct functional tissues and organs. Hydrogels have been widely used as bioink due to their structural similarity to the natural extracellular matrix. Herein, dual cross-linkable hydrogel systems were designed and used as bioink for extrusion-based 3D printing. Hyaluronate was partially oxidized to react with glycol chitosan to form self-healing hydrogels in the presence of adipic acid dihydrazide (chemical cross-linking). Hyaluronate-alginate hybrid polymer was also synthesized and added to physically cross-link the self-healing gels in the presence of calcium ions after the printing process. Various characteristics of dual cross-linked self-healing gels, including viscoelastic properties, stability, chondrogenic differentiation were investigated in vitro.

주시방향과 각도 변화와 수평사위도의 관계

김현승,김혜연,김유경,김지원,김동현,윤민화 대한시과학회 2017 대한시과학회지 학술대회 Vol.2017 No.06

목적: 원거리와 근거리에서 얼굴을 고정시키는 고정 장치와 각도기를 이용하여 주시방향과 주시각도에 따라 사위도의 변화 여부의 상관성을 조사하였다. 방법: 20~30대 남여 30명을 대상으로 머리 고정 장치를 이용, 원거리와 근거리에서 마독스 로드와 시표를 이용해 정면을 바라볼 때의 사위량과 왼쪽과 오른쪽으로 각각 20°와 40° 방향을 바라볼 때 사위량이 변화를 3회 반복 측정하였다. 결과: 정면을 바라볼 때의 사위량에 비해 좌․우로 20°와 40°로 각이 증가할수록 사위량이 감소하는 결과를 보였으며 또한 주시방향이 왼쪽과 오른쪽일 때 각각 다르게 나타났다. 사위검사 시 주시 방향과 각도에 따라 안경과 콘택트렌즈의 처방 값이 달라질 수 있음을 고 려하여야 한다는 결과가 도출되었다. 결론: 양안시 평가에 있어 기본이 되는 사위 검사는 얼굴을 포롭터에 수평이 되도록 하지 않으면 프리즘 효과 때문에 비점수차가 발생하여 부정확한 값이 얻어질 수 있다. 사위 검사 시 수평 주시방향과 주시각도에 따라 정면에서 측면으로 갈수록 값이 감소하였으며, 왼쪽과 오른쪽으로 돌릴 때도 감소량이 다르게 나타났는데 이유는 해부학적으로 코 쪽의 시야가 상대적으로 좁고, 외안근의 작용 방향의 제한성에 기인한다고 생각된다. 따라서 사위 검사 시 바른 자세로 검사를 실시해야 하고, 검사자도 이를 숙지하여 사위 변화 값을 최소화해야 한다.

사회 인구학적 변인에 따른 여성의 웰빙 인식과 미용관리 성향

김현승,조성현 대한통합의학회 2019 대한통합의학회지 Vol.7 No.3

목적: 본 연구의 목적은 여성을 대상으로 한 웰빙 인식과 미용관리 성향에 대해 알아보고자 한다. 방법: 320명의 여성을 대상으로 설문 조사를 실시하였으며, 사회-인구학적 변수에 따라서 웰빙 인식과 미용 관리 경형에 대해서 T-test와 ANOVA를 실시하였다. 미용관리 성향에 미치는 요인을 분석하고자 다중회귀분석을 실시하였다. 결과 : 연구대상자들의 웰빙 인식을 분석한 결과, 전체적으로 웰빙을 정신중심으로 인식하는 경향이 상대적으로 높았고 물질적 측면으로 인식하는 것은 낮게 나타났다. 그러므로 대상자들은 웰빙을 정신적인 것을 지향하는 것이라고 인식하고 있었다. 미용관리 성향에 영향을 미치는 요인을 분석한 결과 외모 지향적 가치를 중시하는 인식이 가장 큰 영향을 미쳤고 정신 지향적 가치를 중요시 할수록 미용관리 성향이 높은 것으로 나타났다. 결론: 정신 지향적 웰빙 인식에 기초한 미용관리 성향에 관한 연구가 이루어진다면 자신의 몸과 마음을 가꾸기 위해 사치스럽고 고풍스러운 미용관리가 웰빙이라는 인식을 제어할 수 있다. Purpose : The purpose of this study was to analyze perceptions of well-being and characteristics of beauty care tendencies among women, in order to provide basic data for the establishment of a well-being and beauty management direction. Methods : The domains examined for perceptions of well-being included spirit-oriented, material-oriented, self-oriented, and appearance-oriented values. The domains examined for beauty care tendencies consisted of appearance interest, social factors, and beauty care behavior. A survey of 320 women was conducted. In the analysis of the data, t-test and analysis of variance were used to examine the relationship between perceptions of well-being and beauty care tendencies based on sociodemographic variables. A multiple regression analysis was used to analyze the factors affecting beauty care tendencies. Results : The analysis of the perceptions of well-being among the participants indicated that they tended to be more aware of the mental aspects of well-being and seldom recognized well-being as having material aspects. Therefore, they recognized the concept of well-being as something mentally oriented. The analysis of the factors affecting beauty care tendencies indicated that the participants were most greatly influenced by spirit-oriented values, and the more appearance-oriented values were emphasized, the more focus there was on beauty care. Conclusion : This study found that well-being is a luxury, and traditional beauty care involving care of the mind and body can be effectively utilized if the beauty care is based on the recognition of mentally oriented well-being.

Hyaluronate-Based Multifunctional Hydrogels for 3-D Bioprinting

김현승,이근용 한국고분자학회 2022 한국고분자학회 학술대회 연구논문 초록집 Vol.47 No.1

Characterization of differential gene expression of broiler chicken to thermal stress in discrete developmental stages

김현승,김지민,김재민,최양호 한국통합생물학회 2022 Animal cells and systems Vol.26 No.2

Prolonged exposure to high temperatures is linked to a range of physiological responses in broiler chickens including reduced disease resistance, low growth rate, and high mortality rate. In this study, we investigated the effect of heat stress on gene expression levels in 4-week-old and 6- week-old chickens each exposed to environments conditioned at thermoneutral (21 °C) and high (32 °C) temperatures. The analysis of differentially expressed genes (DEGs) using microarray revealed that genes underlying reactive oxygen species (ROS) production, cell nutrient intake, glucose metabolism, and circadian rhythm were differentially regulated in association with heat stress. We also found that the deviation in expression levels across the transcriptome in response to heat stress was significantly stronger (P< 2.2×10−16) in 6-week-olds compared to younger chickens. We finally observed a significant trend (r = 0.78, P< 2.2×10−16) that genes with a higher estimate of expression in the microarray were more likely to have a higher expression level in RNA-sequencing. Together, our findings provide comprehensive insights into the physiology involved in stress responses at varying developmental stages, which may facilitate chicken breeding to maximize their productivity under adverse conditions.

압력 생체되먹임 장치를 이용한 호흡재교육 운동이 뇌졸중 환자의 들숨기능에 미치는 영향

김현승,이동우,조성현 한국재활복지공학회 2019 재활복지공학회논문지 Vol.13 No.3

The purpose of this study is to confirm the validity of respiratory retraining exercise using pressure biofeedback units among patients with stroke as an effective intervention for improving inspiratory function. 30 patients with stroke were recruited as subjects. Among them, 15 patients were randomly assigned to an experimental group performing lumbar stabilization exercise and respiratory retraining exercise, and other 15 patients were randomly assigned to a control group conducting only lumbar stabilization exercise. Exercise was implemented three times a week for six weeks. The experimental group performed stabilization exercise for half an hour and respiratory retraining exercise for 20 minutes. For tests, a preliminary test before training, a test three weeks after training, and a test six weeks after training were carried out. For results from this study, the interaction between three durations including a preliminary test (0 week), a test three weeks after training, and a test six weeks after training and groups was statistically significant in strength index and peak inspiratory flow (p<.05). A test for main effects according to the duration of experiment indicated a significant difference in comparing strength index, peak inspiratory flow and inspiratory volume in each group (p<.05). The above results showed that the joint implementation of respiratory retraining exercise and lumbar stabilization exercise had more positive effects in inspiratory function than performing ordinary lumbar stabilization exercise. 본 연구의 목적은 뇌졸중 환자를 대상으로 압력 생체되먹임 장치를 이용한 호흡재교육 운동이 들숨기능에 미치는 영향을 알아보고 중재 방법으로 타당한지 알아보고자 진행되었다. 연구대상자는 뇌졸중 환자 총 30명을 대상으로, 허리 안정화 운동 및 호흡재교육 운동한 실험군 15명과 허리 안정화 운동만을 시행한 대조군 15명을 무작위로 배정하였다. 훈련은 6주 동안 주 3회 실시하였으며, 실험군은 허리 안정화 운동 30분, 호흡재교육 운동 20분을 실시하였다. 검사는 훈련 전 사전검사, 훈련 3주 후 검사, 훈련 6주 후 검사를 시행하였으며, 각 그룹 내 중재 기간에 따른 비교와 그룹 간 비교를 통해 종속변수에 미치는 효과를 알아보고자 하였다. 본 연구의 결과는 사전검사(0주), 3주 후 검사, 6주 후 검사에 대한 세 기간과 집단의 상호작용은 들숨압력과 최대들숨유속에서 통계학적으로 유의한 차이가 있었다(p<.05). 각 군의 들숨압력, 최대들숨유속, 들숨량에서 실험 기간에 따른 주 효과 검정에서는 유의한 차이가 있었다(p<.05). 이러한 결과를 미루어 볼 때 호흡재교육 운동과 허리 안정화 운동의 병행이 일반적인 허리 안정화 운동만 수행하는 것보다 들숨에 긍정적인 효과를 보인 것으로 알 수 있었다.

M&S 기법을 통한 피아식별 레이다 성능예측 및 분석

김현승,박명훈,전우중,홍성민,Kim, Hyunseung,Park, Myunghoon,Jeon, Woojoong,Hong, Sungmin 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.2

In actual battlefield environment, IFF radar plays an important role in distinguishing friend or foe targets and assigning unique identification code to management. Performance of IFF radar is greatly affected by radio environment including atmosphere and terrain, target maneuvering and operation mode. In this paper, M&S tool is consisted of interrogator(IFF radar) and answering machine(target) for radar performance analysis. The wave propagation model using APM(Advanced Propagation Model) and radar actuator system were modeled by considering beam waveform of individual operation beam mode. Using this tool, IFF radar performance was analyzed through two experimental results. As a result, it is expected that performance of IFF radar can be predicted in the operational environment by considering target maneuvering and operation beam mode.