[김현승 시선] 눈물 외 8편

김현승 문예운동사 2016 문예운동 Vol.- No.129

Bioprinting of Tissue Scaffold with Hyaluronate-Based Self-healing Hydrogel

김현승,공민형,이근용 한국고분자학회 2023 한국고분자학회 학술대회 연구논문 초록집 Vol.48 No.1

좌심실 조영술에 의한 좌심실 기능검사에 관한 연구

김현승,차홍도 대한내과학회 1986 대한내과학회지 Vol.30 No.1

Left ventricular end-diastolic pressure(LVEDP), ejection fraction(EF) and circumferential fiber shortening(CFS) have been used for the assessment of left ventricular performance. Among 76 patients with heart disease. 15 patients had pure mitral stenoeis, 44 had mitral stenosis associated with other mild valvular disease, 7 had cardiomyopathy and 10 had coronary artery disease. Cardiac catheterization was performed and left ventriculography was done with right anterior oblique projection, and LVEDP, EF, CFS and segmental fiber shortening(SFS) were obtained. The results of the study were: 1) The LVEDP was normal in patients with pure mitral stenosia(7,7±0.74 mmHg) and in patients with mitral stenosis associated with mild valvular disease(8.5±0.52 mmHg), The LUEDP was significantly elevated in patients with cardiomyopathy(20.6±2,50 mmHg) and in patients with coronary artery disease(22.8±3.12 mmHg). 2) In patients with pure mitral stenosis and in patients with mitral stenosis associated with other mild valvulisease, the EF was normal, 57.9± 3.03% and 56.0±1.85%, respectively, while the EF was markedly reduced in patients with cardiomyopathy(27. 7±4. 33%) and in patients with coronary artery disease(34.1±5.28%). 3) The extent of CFS was normal in patients with pure mitral stenosis(33.5±3.06%) and was slightly reduced in patients with mitral stenosis associated with other mild valvular disease(29,4±1.34,). In cardiomyopathy and coronary artery disease, the extent of CFS decreased markedly 16.2±3.28% and 16.3±3.56%, respectively. 4) Estimation of the SFS 4y the percentage of shortening of each hemiaxis seemed to be a better method for evaluation of left ventricular contractility in patients with coronary artery disease. 5) Left ventricular end-diastolic pressure correlated well with ejection fraction and circumferential fiber shortening.

건설프로젝트의 작업유형별 3차원 작업공간 생성 및 간섭 최적화 방안

김현승,문현석,김창학,강인석,Kim, HyeonSeung,Moon, HyounSeok,Kim, ChangHak,Kang, LeenSeok 대한토목학회 2014 대한토목학회논문집 Vol.34 No.6

The increase of input resources, such as labor and equipment, in a construction project causes workspace interference between activities and it influences on the productivity and quality of construction activities. To solve this problem, many studies related to the workspace interference have been performed, however they verified the workspace concerning with only the geometric location of activities or generated the shape of workspace by a whole object concept not separated units of detailed operations. It is difficult for project manager to reasonably analyze the workspace conflict, because the size of workspace cannot reflect the characteristics of an activity and input time of a resource. This paper presents a methodology that can generate three-dimensional models in order to optimize the workspace shape and size by considering with the characteristics of each activity and input time of each resource. The suggested method can be used for the active BIM system that optimizes the workspace conflict without additional construction duration and for the searching algorithm of optimized moving path for construction equipment. 건설공사 프로젝트에서 인력 및 장비 등의 투입자원 증가는 공정간의 작업공간 간섭을 유발할 뿐만 아니라 프로젝트의 생산성과 품질에 영향을 미칠 수 있다. 이를 해결하기 위해 작업공간관련 연구가 수행되고 있으나, 단순히 공정들의 기하학적 위치만을 고려하여 작업공간을 검증하거나, 작업공간의 형상을 세부 작업별 분리된 형상이 아닌 일괄적 하나의 객체 형태로 생성하고 있다. 이러한 방식은 공정의 특성과 자원의 투입 시간에 따라 변화하는 작업공간의 크기를 반영하지 못하므로 합리적인 작업공간 충돌의 분석이 어렵게 된다. 이를 위해 본 연구에서는 공정과 자원의 특성에 적합한 작업공간의 형상과 크기를 생성할 수 있도록 작업공간의 3차원 모델 생성방법과 운용 시스템을 개발한다. 또한 이를 적용한 작업공간 간섭최적화 연계방안과 건설장비의 최적 이동경로 탐색 방법론을 개발하여 실무적 활용성을 검증한다.

과학의 창의성에 대한 철학적 접근 ― 창의성 연구와 과학적 발견의 관계를 중심으로 ―

김현승 한국과학철학회 2010 과학철학 Vol.13 No.2

Creativity has been regarded as one of the main research topics in the field of psychology, in a direct relation with human cognitive thoughts or abilities. Besides, the creativity research has been one of the main research sections in psychology. Creativity of science is no exception as well. However, science is conducted through particular activities called 'scientific discovery' differentiated from other studies. If a scientific discovery could be a topic of the creativity research, science would be able to obtain a position of creativity unlike other studies. This paper will examine three courses, such as 'The Process of Forming the Creativity Research Focusing on Psychology', 'Approaches and Limits of the Creativity Research on Science' and 'The Category of Scientific Discoveries and Discussions on Creativity of Science'. Thus, the writer is attempting to provide a basic foundation for the fact that creativity of science acquires an important meaning from the analysis of a scientific discovery. 창의성은 인간의 인지적 사고 또는 능력과 직접적인 관련을 맺으며, 사회문화적 요인에 의해 영향을 받아 발휘된다는 점에서 심리학의 연구주제로 여겨져 왔다. 과학의 창의성 역시 예외가 될 수 없다. 하지만 과학은 다른 학문들과 구별되는 과학적 발견이라는 특수한 활동을 통해 진행된다. 만일 과학적 발견이 창의성 연구의 주제가 될 수 있다면, 과학은 다른 학문들과 상이한 방식으로 창의성의 지위를 얻을 수 있다. 이 글은 ‘심리학 중심의 창의성 연구의 형성과정’, ‘과학에서 창의성 연구의 접근과 한계’, ‘과학적 발견의 범주와 과학의 창의성의 논의점’의 세 과정을 살펴 볼 것이다. 그래서 필자는 과학의 창의성이 과학적 발견에 대한 철학적 분석으로부터 의미를 가질 수 있다는 기초적인 토대를 제공하고자 한다.

양극산화에 의해 CP Ti와 Ti-10Ta-10Nb 합금 표면에 형성된 산화 피막의 형상 및 표면 특성

김현승,이광민,이도재,박상원,이경구,Kim, Hyun-Seung,Kee, Kwang-Min,Lee, Doh-Jae,Park, Sang-Won,Lee, Kyung-Ku 한국재료학회 2007 한국재료학회지 Vol.17 No.1

In the present study, we investigated the formation of self-organized nanostructure oxide layers on CP Ti and Ti-10Ta-10Nb alloy in an electrolyte of 1M phosphoric acid and 1.5 wt% Hydrofluoric acid. The morphology of oxide film on substrate was observed using scanning electron microscopy and transmission electron microscopy The surface roughness of titanium oxide film was analyzed by atomic force microscopy and the crystalline of specimen was investigated using X-ray diffractometer. The results of this study showed that well-aligned titanium oxide nanotubes are formed with diameter of approx. 100nm and length of approx. 500nm with CP Ti. However, it is clear that TiTaNb alloy highly irregular structure with various diameters. Transmission electron microscope investigations show that the specimens were confirmed as amorphous. Such titanium oxide nanotubes are expected a well-adhered bioacitive surface layer on titanium substrate for orthopedics and dental implants.

노인의 불확실성과 삶의 질과의 관계

김현승,조성현 대한통합의학회 2022 대한통합의학회지 Vol.10 No.4

Purpose : The purpose of this study was to investigate the differences between uncertainty of chronic diseases and quality of life with regard to elderly people. Methods : The participants of this study were 350 elderly people, aged over 65 years. The collected data were analyzed using the SPSS Window program and the general characteristics of the participants and sub-domains of quality of life were analyzed by several frequency analyses and descriptive statistics such as mean, standard deviation, skewness, and kurtosis. Further, the differences between the sub-domains of uncertainty and sub-domains of quality of life were analyzed through independent t-test and one-way ANOVA. In order to reach conclusive results, post-test was analyzed by the Scheffé test. In addition, Pearson's correlation analysis was performed to determine the correlation between the target categories. A significance level of α=.05 was used to verify statistical significance. Results : As a result of examining “uncertainty” with respect to general characteristics, such as older age, low educational background, and chronic diseases, it was observed that the more intense these factors became, the more the level of uncertainty increased. In addition, it was also noted that except “accompanying diseases” in social domain, the participants enjoyed a high level of quality of life. The correlation was noted between domains of complexity and sociality (p<.01), domains of inconsistency and sociality (p<.01), domains of complexity and living environment (p<.01), domains of inconsistency and living environment (p<.01), and total score of uncertainty and total quality of life (p<.01). Conclusion : In this study, differences were found between “uncertainty” and “quality of life” of elderly people; the correlation between the sub-domains based on general traits was found to be negative (-). This suggests that objective evidence can be presented for the prevention of diseases by using mental health programs for the elderly in future.

문학 : 영어로 읽는 한국시 14

김현승,고창수 한국불교사연구소 2009 문학/사학/철학 Vol.19 No.-

WDM-RoF기반 1.25 Gb/s의 63㎓대역과 기저대역의 데이터 동시 전송

김현승,원용욱,손용환,한상국 한국통신학회 2009 한국통신학회 기타 간행물 Vol.2009 No.12

문학 : 시(詩) ; 영어로 읽는 한국시 5

김현승,고창수(역) 한국불교사연구소 2007 문학/사학/철학 Vol.10 No.-