• 재활복지
• /
• 제20권1호
• /
• pp.87-111
• /
• 2016

본 연구는 마약중독에서 탈출하여 회복의 길을 걷고 있는 회복자 5명에 대한 질적 사례연구이다. 마약 중독자들의 회복과 그 내용에 대한 이해는 사회적 실천적 효용성이 있음에도 불구하고 개인들의 지극히 사적이고 민감한 주제를 다루기 때문에 질적연구 방법이 적합하다. 연구자들은 질적연구 방법 중 질적 사례연구방법으로 접근하였으며, 심층면담을 수행하여 자료를 구성하였다. 자료는 Creswell(2007)이 제안한 사례 내 사례 간 주제분석 방법으로 분석하였다. 사례 내 분석에서는 연구참여자들의 개별적인 사례를 기술하고 그들의 경험과 중독, 탈중독 과정의 주요 문제점들을 파악하였다. 사례 간 분석에서는 사례 내 분석을 토대로 마약중독 회복경험 전체에서 나타나는 유사한 주제들을 결집하여 공통주제로 전환하였다. 5명의 개별사례에서 마약중독 회복과 관련하여 총 19개의 주제를 도출했고, 이를 공통성 차원에서 결집한 결과, 첫째, 현실감각의 회복, 둘째, 자기실존 양식 떠안기, 셋째, 사회적 관계 속에서 자기 재구성, 넷째, 자기애의 4가지 공통주제를 발굴했다. 연구결과와 논의에 근거하여 마약중독자의 회복과 재활에 기여할 수 있는 실천차원에서의 제언을 하였다.

• Fibers and Polymers
• /
• 제1권1호
• /
• pp.37-44
• /
• 2000

A finite element method is employed fer a flow analysis of the melt spinning process of a non-circular fiber, a PET(polyethylene terephthalate) filament. The flow field is divided into two regions of die channel and spin-line. A two dimensional analysis is used for the flow within the die channel and a three dimensional analysis fur the flow along the spin-line. The Newtonian fluid is assumed for the PET melt and material properties are considered to be constant except for the viscosity. Effects of gravitation, air drag force, and surface tension are neglected. Although the spin-line length is 4.5 m only five millimeters from the spinneret are evaluated as the domain of the analysis. Isothermal and non-isothermal cases are studied fer the flow within the die channel. The relationship between the mass flow rate and the pressure gradient is presented for the two cases. Three dimensional flow along the spin-line is obtained by assuming isothermal conditions. It is shown that changes in velocity and cross-sectional shape occur mostly in the region of 1mm from the die exit.

• Wind and Structures
• /
• 제24권2호
• /
• pp.95-118
• /
• 2017

The present study revealed comparison the pressure distribution on the surfaces of regular cross plan shaped building with angular cross plan shaped building which is being transformed from basic cross plan shaped building through the variation of internal angles between limbs by $15^{\circ}$ for various wind incidence angle from $0^{\circ}$ to $180^{\circ}$ at an interval of $30^{\circ}$. In order to maintain the area same the limbs sizes are slightly increased accordingly. Numerical analysis has been carried out to generate similar nature of flow condition as per IS: 875 (Part -III):1987 (a mean wind velocity of 10 m/s) by using computational fluid dynamics (CFD) with help of ANSYS CFX ($k-{\varepsilon}$ model). The variation of mean pressure coefficients, pressure distribution over the surface, flow pattern and force coefficient are evaluated for each cases and represented graphically to understand extent of nonconformities due to such angular modifications in plan. Finally regular cross shaped building results are compared with wind tunnel results obtained from similar '+' shaped building study with similar flow condition. Reduction in along wind force coefficients for angular crossed shaped building, observed for various skew angles leads to develop lesser along wind force on building compared to regular crossed shaped building and square plan shaped building. Interference effect within the internal faces are observed in particular faces of building for both cases, considerably. Significant deviation is noticed in wind induced responses for angular cross building compared to regular cross shaped building for different direction wind flow.

• Journal of Advanced Marine Engineering and Technology
• /
• 제29권1호
• /
• pp.25-33
• /
• 2005

When a circular tube with uniform heat generation within the wall was placed in a cross flow, heat flows by conduction in the circumferential direction due to the asymmetric nature of the fluid flow around the perimeter of the circular tube The circumferential heat flow affects the wall temperature distribution to such an extent that. in some cases, significantly different results may be obtained for geometrically similar surfaces. In the present investigation, the effect of circumferential wall heat conduction is investigated for forced convection around circular tube in cross flow of air and water Two-dimensional temperature distribution $T_w(r,{\theta})$ is calculated through the numerical analysis. The difference between one-dimensional and two-dimensional solutions is demonstrated on the graph of local heat transfer coefficients. It is observed that the effect of working fluid is very remarkable.

• Computers and Concrete
• /
• 제4권2호
• /
• pp.157-166
• /
• 2007

The paper considers a theoretical model to study sulfate ion diffusion in saturated porous media - cement based mineral composites, accounting for simultaneous effects, such as filling micro-capillaries (pores) with ions and chemical products and liquid push out of them. Pore volume change and its effect on the distribution of ion concentration within the specimen are investigated. Relations for the distribution of the capillary relative radius and volume within the composite under consideration are found. The numerical algorithm used is further completed to consider capillary size change and the effects accompanying sulfate ion diffusion. Ion distribution within the cross section and volume of specimens fabricated from mineral composites is numerically studied, accounting for the change of material capillary size and volume. Characteristic cases of 2D and 3D diffusion are analyzed. The results found can be used to both assess the sulfate corrosion in saturated systems and predict changes occurring in the pore structure of the composite as a result of sulfate ion diffusion.

• 한국해양공학회지
• /
• 제15권3호
• /
• pp.1-8
• /
• 2001

With uniform heat generation within the wall of the cylinder placed in a cross flow, heat flows by conduction in the circumferential direction due to the asymmetric nature of the fluid flow around the perimeter of the cylinder. The circumferential heat flow affects the wall temperature distribution to such an extent that in some cases significantly different results may be obtained for geometrically similar surfaces. In the present investigation, the effects of circumferential wall heat conduction on local convective heat transfer is investigated for the case of forced convection around horizontal cylinder in cross flow of air. Two-dimensional temperature distribution $T_w$/(${\gamma}$,${\theta}$) is presented through the numerical analysis. The one-dimensional and two-dimensional solutions are in good agreement with experimental results of local heat transfer coefficients.

• 한국안전학회지
• /
• 제38권3호
• /
• pp.102-109
• /
• 2023

Following the accident at Fukushima, the true impact of multi-unit accidents came to light. Accordingly, research related to multi-unit accident effect analysis, risk evaluation, and accident prevention/prevention technology has been conducted. Specific examples are mobile/fixed equipment such as multi-barrier accident coping strategy (MACST) and diverse and flexible coping strategies (FLEX), which have been introduced and installed in multi-units for preventing and mitigating multi-unit accidents. These strategies are useful for enhancing the safety of nuclear power plants (NPPs); however, a more efficient strategy is required in terms of the costs of physical and human resources. To effectively and efficiently mitigate an increase in multi-unit accidents, it is necessary to not only to utilize mobile/fixed equipment but to also use crosstie options with resources that already exist at NPPs. Therefore, we analyzed the current international and domestic status of crosstie systems technology and propose a method to evaluate feasibility alongside risk based on a multi-unit probabilistic safety assessment (PSA). To analyze the international and domestic status of crosstie systems technology, actual cases and related research were studied, and a list of potential crosstie safety resources was derived. Additionally, a case study was performed on crosstie cases of two systems within the assumed six units on-site under a multi-unit accident, and a multi-unit PSA-based risk evaluation method is proposed.

• 여성건강간호학회지
• /
• 제23권3호
• /
• pp.155-165
• /
• 2017

Purpose: The aim of this study was to understand the hand-on breast massage techniques used by well-known experts in breastfeeding clinics. Methods: A qualitative multiple-case design was applied that involved a feasibility test. Four experts sampling qualitative data collected by observing participants and in individual interviews were analyzed by content analysis, linking data to the propositions, and cross-case pattern matching. This study explored differences within and between cases, and the possibilities of replicating findings across cases. Thirty-nine postpartum women participated voluntarily in the feasibility test, which investigated the usability of four massage techniques. Results: The four techniques showed considerable similarities in terms of the application of stimulation to the breast base and increased flexibility of the wired flexible body, which was the core mechanism underlying the techniques. The breast management strategies were consistent with existing practice guidelines with the exception of using cold cabbage to control engorgement pain. There was insufficient scientific evidence for supporting the massage techniques used by the experts. All of the techniques showed 100% education completeness, but application rates were higher for self-control-oriented techniques. Conclusion: The massage techniques applied by experts in breastfeeding were based on hypotheses and self-control techniques are feasible to apply in practice.

• 사회복지연구
• /
• 제41권2호
• /
• pp.5-33
• /
• 2010

이 연구의 목적은 개방입양을 시도한 가족들이 개방입양을 진행하는 과정에서 경험한 다양한 이슈들을 파악하고 분석하고자 하는 것이다. 이러한 목적을 달성하기 위해, 연구자들은 개방입양을 시도한 입양가족들을 대상으로 심층면접 등 다양한 방법으로 자료를 수집하였으며 질적 사례연구 접근을 통해 분석하였다. 최종 7사례를 통해 수집한 자료들을 가지고 사례 내 분석과 사례 간 분석을 실시하였다. 사례 내 분석에서는 각 사례들을 전반적으로 검토한 뒤 이야기 형식으로 요약하였고, 각 사례에서 나타난 주요한 개방입양의 이슈들을 사례 순으로 비교하면서 기술하였다. 사례 간 분석에서는 사례 내 분석에서 나타난 이슈들을 염두에 두고 전체 사례들을 재검토하여 8개의 주제로 통합하였다. 8개의 주제를 제시해 보면, '결정적 만남', '분명한 선 긋기', '불안한 평행선 걷기', '그 엄마', '누가 진짜 부모인가?', '절대로 해서는 안되는 말', '숨은 주역들', '관계의 중심 또는 방관자' 등이었다. 이러한 연구결과를 근거로, 입양분야에서 개방입양과 관련된 정책과 실천 지침들을 제언하였으며, 연구의 한계를 극복하고 더 풍부한 정보를 확보하기 위해 필요한 후속연구들에 대해서도 제언하였다.

• 간호행정학회지
• /
• 제6권1호
• /
• pp.83-96
• /
• 2000

With the increased use of computers in medical fields, we can consider introducing computer mediated communication into the area of patient care such as medical or health counseling and education. But little was known about what problems can be counseled, what is the main direction of counseling, and what difficulties are met during the computer mediated counseling. So I conducted this study. This is a fundamental study concerning the health counseling by the inter-net. In this study, medical counseling using a method of questioning -answering through a computer mediated communication system was carried out from June 1998 to May 1999. I analyzed the contents of questions and answers by the ICPC classification. The ICPC classification emerged as a standard for information categorization in Primary Health Care within a few years. One of the most prominent features of this classification is the inclusion of the complaints of the patients (symptoms & complaints) and the social problems (Chapter Z). Thus, and for the first time, the demand of patients may be assessed such as it is expressed in the reality. The ICPC list is now an international standard whose validity is not questioned any more. It is translated in more than twenty different languages. The data collected were analyzed by descriptive statistical method, c2 test by cross tabulations. Followings are the results of this study. 1. The 3,054 users composed of 64% of males and 36% of females. The highest number of users was showed in the age group of $25{\sim}29$ (39.4%). 2. During the one-year period, the average number of counseling per user was 2.5 cases and per day was 21.1 cases. 3. In classifying symptoms and complaints by 17 chapter, digestive(17.6%), general and unspecified (12.7%), skin(12.7%) and musculoskeletal system (9.6%) were most common questions. 4. The distribution of diagnosis by 17 chapter, general and unspecified (21.4%), digestive (15.3%), skin (11.9%) and mus- culoskeletal system (8.9%) were most common answers. 5. Many users wanted to know symptoms and complaints(3,609 cases), treatment principles (2,928 cases), prognosis and preventive methods for health problems which were previously diagnosed (284 cases).