• Journal of Korea Ship Safrty Technology Authority
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• s.33
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• pp.12-31
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• 2012

수치 계산으로 고속 활주선의 저항 성능을 평가하기 위해서는 활주 상태에서의 항주자세 예측이 무엇보다도 중요하다고 할 수 있다. 항주자세의 변화가 큰 고속 활주선의 경우에는 활주 자세에 따라 선저 바닥면에서 나타나는 압력 변화에 의한 동적 부양력 변화가 크므로 단순히 정지 중 흘수를 기준으로 계산되어진 유체력으로 항주자세를 예측하기 보다는 자세 변화에 따른 동적 부양력의 변화와 이에 의한 자세 변화를 반복 계산을 통해 수렴시키는 것이 요구되어진다. 본 연구에서는 선형화된 자유수면 조건의 포텐셜 수치 계산으로 유체 동압력인 부양력을 계산해내고 이를 유체 정역학적 힘으로 간주하여 부력과 선체중량과의 힘과 트림 모멘트 평형 관계를 만족시키는 방법으로 반복적인 계산을 통해 수렴된 활주 자세를 얻어내었다.

• Journal of the Korean Home Economics Association
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• v.48 no.4
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• pp.83-102
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• 2010

This paper investigates whether intra-household bargaining power affects couples' caregiving decisions during instances of competing parental demands for assistance. The primary focus is on examining how partners' bargaining power influences the relative allocation of time resources between parents and parents-in-law, assuming that children prefer to transfer caregiving resources toward their own parents over their parents-in-law. The findings in this study reject the bargaining theory that couple's parental care behavior results from a bargaining process between the husband and the wife. More specifically, the results did not clearly show that children prefer to transfer caregiving resources toward their own parents over their parents-in-law. Decision-making power, measured by final decision-making authority, also failed to affect the relative care transfers.

• Tunnel and Underground Space
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• v.13 no.4
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• pp.304-315
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• 2003

In this paper, the DDA method with a new hydro-mechanical algorithm is used to study the effect of rock discontinuities on uplift and seepage in concrete gravity dam foundations. This paper presents an alternative method of predicting uplift and seepage at the base of concrete gravity dams. A sensitivity analysis was carried out to study the importance of several parameters on dam stability such as the orientation, spacing, and location of discontinuities. The study shows that joint water flow and adverse geological conditions could result in unusual uplift at the base of concrete gravity dams, well in excess of what is predicted with the classical linear or hi-linear pressure assumption. It is shown that, in general, the DDA program with the hydro-mechanical algorithm can be used as a practical tool in the design of gravity dams built on fractured rock masses.

• Journal of Convergence for Information Technology
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• v.7 no.5
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• pp.25-30
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• 2017

This study was to investigate the supporting awareness and empathy with the dental hygiene student. The participants were 193 dental hygiene students in Gwang Ju city and analyzed by the frequency analyzed, t-test, ANOVA, pearson corelation coefficients and multiple regression analysis using IBM SPSS STATICS 20.0. Supporting awareness and empathy about the elderly had a significant positive correlation. Factors influencing empathy were interest of elderly problem and supporting awareness. It is necessary to the establishment of a subject and education program about elderly in dental hygiene students.

• Journal of Families and Better Life
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• v.13 no.3
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• pp.115-123
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• 1995

본 연구에서는 일차적인 부양자로서의 역할을 담당하고 있는 며느리들을 중심으로 시부모를 부양하면서 느끼는 스트레스를 완하시킬수 있는 자원에는 어떤 것들이 이는지를 살펴봄으로써 효과적인 시부모 부양방안을 규명하는데 그 목적이 있다. 767명의 며느리들을 대상으로 자료를 수집하여 회귀분석해 본 결과 자기통제력.부모부양태도와 같은 개인적요인, 부양의 호혜성.관계의 질과 같은 관계적 요인 및 비공식적 지원망의 성원들로부터의 지원과 같은 가족사회적 요인등이 부양스트레스 인지를 낮추는 것으로 나타나 이들요인들이 시부모를 부양하면서 부담 내지 스트레스를 느끼는 며느리들에게 주요한 부양자원이 된다고 할 수 있다. 이를 감안해 볼 때, 며느리의 부양 부담 및 스트레스를 낮출수 있는 다양한 자원에 초점을 둔 지역사회 단위의 교육 및 상담사업의 필요가 절실하다고 하겠다.

• Journal of Families and Better Life
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• v.12 no.2
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• pp.129-139
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• 1994

본 연구는 노부모의 실제적 부양역할을 담당하는 며느리가지각하는 부양스트레스를 최소화하는 방법을 찾기위하여 이에 영향을 미치는 결정변인을 탐색하였다 이를 위하여 K 직할시에 거주하고 있는 며느리 364명을 대상으로 설문조사를 하였다 그 결과 노모와 동거 하는 며느리가 지각하는 부양스트레스의 결정변인은 노모와 며느리 간의 애정적 유대 (-0.67) 노모의 의존도 (0.53) 며느리의 규범적 유대(-0.48) 로 나타났으며 이들변인의 설명 력은 41% 이었다 한편 노모와 별거하는 며느리가 지각하는부양스트레스의 결정변인은 노모 와 며느리 간의 애정적 유대(-0.68) 노모의 의존도(0.73)며느리의 규범적 유대(-0.39) 노모에 대한 며느리의 기능적 유대(0.15) 로 나타났고 이들 변인의 설명력은 41% 이었다.

• Journal of Families and Better Life
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• v.13 no.1
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• pp.47-57
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• 1995

본 연구는 노부모부양가족의 어려움과 요구에 적합한 프로그램을 개발하여 노부모를 부양하는 성인자녀를 실제적으로 도와주고 그들의 부양부담감을 감소시키고자 하는 데에 목적이 있다. 이러한 목적을 위해서 일차적으로 우리나라 노부모 부양가족의 요구가 고려된 실험적 노부모 부양가족 프로그램을 구상하였다. 구상된 프로그램으로 노부모가 한분이라도 생존해 계신 여덟명의 교육대상을 소규모 집단으로 모집하여 시범교육을 실시하였다. 실시과정에서 파악되는 문제점과 개선점을 검토하고 사전 검사후 사후 검사를 2회 실시하여 프로 그램의 효과를 검증평가하였다. 그 결과 본 프로그램의 참여가 프로그램의 목적과 관련된 부양에 필요한 지식정보와 자기결단 및 통제력 수준을 향상시키고, 부양자로 하여금 보다 긍정적인 노부모 부양태도나 인식을 가지게 한 것으로 나타나 프로그램의 효과성을 입증해 주었다.

• 재활복지
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• v.18 no.4
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• pp.95-117
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• 2014

This study aims to examine the effects of personal assistance services(physical activity support, homemaking activity support, social activity support) on caregiver burden and determine whether family resilience(family belief system, family cohesion, interaction) has a moderating effect between personal assistance services and caregiver burden, thereby presenting a reference data which can be used to seek a practical measure for handicapped welfare. This study was conducted on 200 primary caregivers with disabled family members of rank 1 or 2 in east, west, south, and north Gyeonggi-do using personal assistance services. Data was collected in 2013 from April 1 to May 15, and was analyzed using the SPSS 19.0 statistics program in which a moderated multiple regression analysis based on exploratory factor analysis, confirmatory factor analysis, and hierarchical regression analysis was performed. The primary conclusions of this study were as follows; First, the use of physical activity support was showed to have a positive effect in reducing family burden related to disabled care. Second, personal assistance services exhibit significant moderator effects related to family burden in family belief systems and family cohesion.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.81-82
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• 2006

Conveyor-type transporters have been widely used as a typical delivery system of semi-conductor, FPD and other IT-related products. However, as the IT-product is getting larger in size and higher in resolution, several problems are caused by mechanical contacts between the transporter and target object. In this context, recently, lots of efforts are being devoted for development of various contact-free handling systems to get rid of deffets and oil contaminations. The objectives of this paper are to characterize suspension mechanisms and to investigate air flow effects on air levitation transport system. For this purpose, a series of CFD analyses were carried out and the simulation data showed a good agreement with the corresponding experimental ones. It is anticipated that the promising result can be used as a basis for concept design of the transport system.

• Journal of computational fluids engineering
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• v.3 no.2
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• pp.52-64
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• 1998

Numerical simulations on the flowfield of lifting chamber for Wing-In-Ground vehicle were performed using Fluent/UNS 4.2 software. The trend of lifting force in lifting chamber and parametric study of geometric and fluid variables were primarily investigated. Selected parameters for investigation are inlet velocity, height between chamber and water level, depth of the skirt, location of inlet, variaton of height at bow and stern. Also, air capturing capabilities from downstream of the propeller were evaluated at the air inlet. The lifting force was increased linearly with the increased of inlet velocity and nonlinearly with the decrease of height force was increased with increased depth. It turned out to have very minor effect on lifting force to change the location of air inlet for lifting chamber, installed on top surface. Tilting the vehicle when it was lifted, the lifting forces, generated in each case, showed no appreciable changes.