• 한국안전학회지
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• 제23권4호
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• pp.67-71
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• 2008

Formwork is a temporary structure that supports its weight and that of fresh concrete as well as construction live loads. Slab formwork consists of sheathing, stringer, hanger and shore. In construction site, pipe supports are usually used as shores which are consisted of the slab formwork. In this study, compressive strength of 80 pipe supports was measured by knife edge test and plate test. Buckling load of pipe supports was analyzed by structural analysis program(MlDAS). Theoretical buckling load with/without initial deformation was got by theoretical analysis. According to these results, buckling load which was analyzed by structural analysis program(MlDAS) was larger than compressive strength of knife edge test and plate test. Theoretical buckling load without initial deformation was larger than compressive strength of knife edge test and plate test. But Theoretical buckling load with initial deformation was lower than compressive strength of knife edge test and plate test. Initial deformation equation for test method according to the pipe support length was suggested. Therefore, the present study results will be used to design the slab formwork safely.

• 한국사회복지학
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• 제64권2호
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• pp.159-183
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• 2012

본 연구는 결혼이주여성의 사회적 연결망이 어떤 구조적 특성을 지니며, 이런 특성에 따라 사회적 연결망이 제공하는 사회적 지지의 유형이 다르게 나타나는지를 분석하고자 하였다. 또한 결혼이주여성을 사회적 지지를 받는 대상으로서 뿐만 아니라, 지지를 제공하는 주체로서 인식하고 도움을 받는 연결망과 주는 연결망이 차이를 보이는지를 살펴보았다. 본 연구는 눈덩이표집방식을 통해 표집한 결혼 이주여성 53명의 자아중심적 연결망 분석을 수행하였다. 분석결과 결혼이주여성은 사회적 연결망을 통해 사회적 지지를 주고받았으며, 연결망내에 중복되지 않는 다양한 연계를 갖는 경우 사회적 지지를 더 많이 받았다. 본 연구는 결혼이주여성의 사회적 연결망의 구조적 특성과 사회적 지지 유형간의 관계에 대한 분석기반을 마련하였다는데 의의가 있다.

• 동아시아경상학회지
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• 제5권2호
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• pp.1-11
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• 2017

This study attempts to verify effects of CEO' supports, compensation and educational training and those of individual annual salaries and company's sales on promotion of knowledge management expected to contribute to enhancing construction industry's competitiveness, from the perspective of person-organization fit. For the analysis, a total of 368 effective questionnaires were used to conduct independent sample t-test, regression analysis and hierarchical moderated regression analysis. The findings show that individual annual salaries have a positive relationship with company's performance and company's sales also have positive relationships with both knowledge management activities and company performance, and CEO's supports, compensation and educational training are important factors that can improve knowledge management activities. In addition, the principle that the rich get richer and the poor get poorer is also operated in construction industry, as in other industries. Therefore, members in a company should conduct optimal strategies to enhance the knowledge management activities through selection and concentration, while governmental agencies require the establishment of IT system for it and supports for related cost and consulting of it.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.880-884
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• 2002

According to the development of computer technology, especially in 3D graphics and visualization, the interest for 3D GIS has been increasing. Several commercial GIS softwares are ready to provide 3D function in their traditional 2D GIS. However, most of these systems are focused on visualization of 3D objects and supports few analysis functions. Therefore in this paper, we design not only a spatial operation processor which can support spatial analysis functions as well as 3D visualization, but also implement a prototype to operate them. In order to support interoperability between the existing models, the proposed spatial operation processor supports the 3D spatial operations based on 3D geometry object model which is designed to extend 2D geometry model of OGIS consortium, and supports index based on R$^*$-Tree. The proposed spatial operation processor can be applied in 3D GIS to support 3D analysis functions.

• Wind and Structures
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• 제32권5호
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• pp.405-421
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• 2021

To gain insight into the wind-induced safety concerns associated with attached tower cranes during the construction of super-tall buildings, a 606 m level frame-core tube super-tall building is selected to investigate the wind-induced vibration response and fragility of an outer-attached tower crane at all stages of construction. The wind velocity time history samples are artificially generated and used to perform dynamic response analyses of the crane to observe the effects of wind velocity and wind direction under its working and non-working resting state. The adverse effects of the relative displacement response at different connection supports are also identified. The wind-resistant fragility curves of the crane are obtained by introducing the concept of incremental dynamic analysis. The results from the investigation indicate that a large relative displacement between the supports can substantially amplify the response of the crane at high levels. Such an effect becomes more serious when the lifting arm is perpendicular to the plane of the connection supports. The flexibility of super-tall buildings should be considered in the design of outer-attached tower cranes, especially for anchorage systems. Fragility analysis can be used to specify the maximum appropriate height of the tower crane for each performance level.

• 지역사회간호학회지
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• 제30권2호
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• pp.234-242
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• 2019

Purpose: This study tries to comprehend older adults' perspectives of community supports and health services in a South Korean city and identify important sociodemographic and health characteristics that affect their perspectives. Methods: 166 older adults were involved in this cross-sectional study. Questions on background characteristics and community supports and health services criteria (categorized as service accessibility, offer of services, voluntary support, or emergency care planning) based upon the WHO's Age-Friendly Cities Guide were used. The data were analyzed using paired and independent t-tests, one-way ANOVA, and hierarchical multiple regression analyses. Results: emergency care planning was rated as the most important by the participants (mean age=76.24 years, 22.9% male), while its current level of performance was lowly appraised (p<.001). The rated importance for each category differed based on individual characteristics. Depression (p=.016), older age (p=.012), and restricted network type (p=.039) were significantly related to ascribing a higher degree of importance to community services. Conclusion: Community initiatives are warranted to optimize emergency care for older adults. This planning must be based on the unique characteristics of older adults in coordination with supportive resources. In addition, comprehensive assessments are warranted before implementing action plans to ensure that the multi-dimensional problems of older adults are incorporated.

• 한국사회복지학
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• 제57권3호
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• pp.337-361
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• 2005

본 논문은 OECD 주요 선진국의 출산율 및 가족복지정책의 변화와 특성을 검토해 보고, 가족복지 유형별 출산율을 비교 분석해 본 후, 한국의 가족복지정책 마련에 도움이 될 수 있는 시사점을 탐색해 보았다. OECD 주요 선진국의 출산율은 1970년대에 인구대체수준 이하로 떨어졌으며, 그 이후에도 완만하게 출산율이 감소했으나, 1990년대에는 출산율이 낮아지는 국가들과 높아지는 국가들로 나누어진다. 이러한 출산율 변화 차이는 1970년대 이후 각국이 채택 추진한 가족복지정책과 상당한 관계를 갖고 있음을 암시해 주고 있다. 주요 선진국들은 1970년대 이후 출산율 감소에 관심을 갖고 인구관련 문제를 종합적으로 다루기 위해 범정부차원의 인구관련기관을 설립했으며, 가족복지 지원수준을 높여왔다. 그러나 각국의 가족복지 지원수준과 지원형태(노동중심 또는 양육중심)는 해당국가의 정치적 이념, 문화 역사적 배경, 경제환경 등에 따라 다르게 발전되어 왔다. OECD 주요 국가들의 가족복지정책을 유사한 특성을 가진 국가군으로 유형화하여 유형별 출산율을 비교해 본 결과, 가족복지 지원수준이 높을수록, 양육중심에 비해 노동중심 지원수준 비중이 높을수록 출산율이 높은 것으로 나타났다. 또한 유형별 출산율 변화를 비교해 본 결과에서도 가족복지 지원수준이 높을수록, 양육중심에 비해 노동중심 지원수준 비중이 높을수록 출산율이 증가하거나 출산율 감소가 완화되는 것으로 나타났다. 주요 선진국의 출산율과 가족복지정책 분석을 통해 얻을 수 있는 시사점으로는, 첫째 출산율 및 인구관련 문제를 체계적으로 연구하여 종합적인 대안을 제공해 줄 수 있는 범정부차원의 인구관련기관을 설립할 필요가 있으며, 둘째 가족수당 신설, 출산휴가와 육아휴직의 기간 연장 및 육아휴직급여의 상향조정, 공보육시설 확대 등 가족지원체계를 확대해야 하고, 셋째 양육중심(가족수당 등) 지원수준 보다 노동중심(아동보육시설, 출산휴가 등) 지원수준에 비중을 많이 둘 필요가 있고, 넷째 사회구성원, 특히 청년층에게 자녀를 기르는 것이 어렵지 않으며 행복을 가져다준다는 희망을 갖도록 하는 사회환경을 조성할 필요가 있다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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• pp.315-318
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• 1996

In this paper a new positioning method for cylindrical work pieces on rotating supports is studied. A work piece on a rotating axis is positioned by an impact drive mechanism (IDM) whose driving parameters are steadily updated by observing the object movement. The application of this actuator and the use of a multi-functional PC board for all necessary input and output operations such as e.g. data acquisition or wave form generation allow an alignment with a precision of less than 1.mu.m in a relatively short time and at low cost compared to conventional methods.

• 대한화학회지
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• 제55권5호
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• pp.812-818
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• 2011

[ $V_{0.9}Sb_{0.1}O_x$ ]systems, bulk and deposited on different supports (five types of ${\gamma}$-aluminas, ${\alpha}$-alumina, silica-alumina, silica gel, magnesium oxide), have been tested in the oxidative dehydrogenation (ODH) of iso-butane. This statement is derived from the data obtained by a set of characterisation techniques(specific surface area measurements, X-ray diffraction, X-ray photoelectron spectroscopy, laser Raman spectroscopy, in situ differential scanning calorimetry and in situ diffuse reflectance-absorption infrared Fourier transform spectroscopy).

• 터널과지하공간
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• 제3권1호
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• pp.40-49
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• 1993

In this study, the indirect estimation method of the support load which is based upon the integrated measuring technique suggested by Kovari was applied to the calculation of support load in the mine roadway. Four test supports were installed in the area where they had to be replaed. Two of those were GI-130 rigid supports and the others were U-26 yieldable supports. The vibrating wire strain gages which were attached inpairs on the steel arch support were used to provide an accurate measurement. Bending moments and normal forces obtained from strain gage pairs were used to calculate the support load. This method was also verified by laboratory bending tests. The results obtained from the back-calculction method showed relatively good agreement with the measured convergence for each crossection.