• Title/Summary/Keyword: Structural Aspects

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Comparison between two geometrical nonlinear methods for truss analyses

  • Greco, M.;Menin, R.C.G.;Ferreira, I.P.;Barros, F.B.
    • Structural Engineering and Mechanics
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    • v.41 no.6
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    • pp.735-750
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    • 2012
  • This paper presents a comparison between two different procedures to deal with the geometric nonlinear analysis of space trusses, considering its structural stability aspects. The first nonlinear formulation, called positional, uses nodal positions rather than nodal displacements to describe the finite elements kinematics. The strains are computed directly from the proposed position concept, using a Cartesian coordinate system fixed in space. The second formulation, called corotational, is based on the explicit separation between rigid body motion and deformed motion. The numerical examples demonstrate the performances and the convergence of the responses for both analyzed formulations. Two numerical examples were compared, including a lattice beam with postcritical behavior. Despite the two completely different approaches to deal with the geometrical nonlinear problem, the results present good agreement.

Structural Deterioration of Educational Buildings in Reinforced Concrete Structure : Area Seoul (철근콘크리트조 교육시설물의 열화성상에 관한 조사 연구 - 서울지역 초.중등교를 중심으로 -)

  • Kwon, Ki-Hyuk
    • Journal of the Korean Institute of Educational Facilities
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    • v.4 no.3
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    • pp.5-14
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    • 1997
  • The purpose of this study is to present basic data in order to improve the efficiency and the objectivity of diagnosing educational structures built with the reinforced concrete. For achieving the purpose, this paper, firstly, researches damage aspects of 22 public educational of facilities in Seoul, and summarizes the results of that research. Through the analysis and the evaluation of damage aspects, this paper shows the conclusions as follows; (1) Main damage to reduce structural capacities of building is the differential settlement. (2) Though the steel corrosion is occurred by several factors, the main cause is the faulty construction. (3) To prevent the damage development, a proper repair strategy is very important.

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Prosodic aspects of ambiguous sentences in Korean produced by Chinese speakers (한국어 중의성 문장에 대한 중국인학습자들의 발화양상)

  • Yune, Youngsook
    • Phonetics and Speech Sciences
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    • v.9 no.2
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    • pp.61-68
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    • 2017
  • The aim of this study is to investigate the prosodic aspects of ambiguous sentences in Korean produced by Chinese Korean Learners (L1: Chinese, L2: Korean). In Korean, sentence ambiguity can be caused by homonym or syntactically ambiguous structure. In spoken language however all ambiguity can be resolved by different prosodic features according to the meaning that they transmit. In this study we examined whether Chinese Korean Leaners also distinguish, in production, ambiguous sentences on the basis of prosodic characteristics. For this study 4 Korean natives speakers and 10 advanced Chinese Korean learners participated in the production test. The material analysed constituted 10 Korean sentences in which 6 sentences are lexically ambiguous and 4 sentences contain structural ambiguity. The results show that Korean native speakers produced ambiguous sentences by different prosodic structure depending on their semantic and syntactic structure. Chinese speakers also show distinct prosodic structure for different ambiguous sentences in most cases. But in the phonetic realization, the internal pitch range was greater for Korean native speakers than Chinese learners.

Analysis and Comparison of Community Structural Attributes by Topographic Positions and Aspects in the Natural Deciduous Forest (천연활엽수림의 지형적 위치와 사면방위에 따른 군집 구조적 속성 분석 및 비교)

  • Yang, Hee-Moon;Kim, Ji-Hong
    • Journal of Forest and Environmental Science
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    • v.18 no.1
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    • pp.73-86
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    • 2001
  • Taking account of the structural variation on species composition according to the different topographic positions and aspects, the forest community attributes such as species composition, species diversity index, and similarity coefficient were comparatively analyzed for the three topographic positions and the four aspects in the natural deciduous forest of Mt. Gari area. The results are as follows 1. The most dominant species in the overstory were Quercus mongolica in the mid-slope, the ridge, and all aspects areas, however, the stands of the topographic positions were less similar than the stands of the aspects in species composition, because of the appearance of the specific domonant species such as Juglans mandshurica in the valley area and Pinus densiflora in the ridge area. 2. Among the three topographic positions, the mid-slope area had greatest species diversity index in overstory, but the index of the valley had greater value than those of mid-slope and ridge in mid-story and understory. The north-east area among the aspects had greatest the index in all canopy layers. However, The stands of the aspects showed more smaller variation than the stands of the topographic positions. 3. The ridge area showed greatest similarity coefficient value with the mid-slope area, but showed least similarity coefficient value with the valley. However, similarity coefficient among the topographic positions had much smaller value than similarity coefficient among the aspects.

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A Comparative Study on the Theory of Tectonics between Gottfried Semper and Karl B$\ddot{o}$tticher (고트프리트 젬퍼(Gottfried Semper)와 칼 뵈티허 (Karl B$\ddot{o}$tticher)의 텍토닉 개념 비교)

  • Jung, In-Ha
    • Journal of architectural history
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    • v.7 no.4 s.17
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    • pp.77-91
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    • 1998
  • The theory of tectonic appeared in the midst of 19th century as German architects adopted new materials and structural technology, invented by creative engineers, into architectural design. This does not merely mean a technical problem but concern the redefinition of architecture in term of an aesthetic, cultural, and ontological identity. Furthermore it alluded to a desire on the part of architectural theorists to actualize artistic and spiritual goals out of new constructional necessities. Because of their complex discourse that assumed the possibility of communication between philosophical and technical aspects, between ideal and real concerns, tectonics becomes until now the most important issue in architecture. The concept of tectonic was intensively investigated by Gottfried Semper's and Karl B$\ddot{o}$tticher architectural writings. They contributed to clarify the principle aspects of tectonic within architectural, philosophical, and anthropological discourses of 19th century. Gottfried Semper stressed an understanding of how architecture took on physical form in earliest human culture. He placed great importance on the artistic expression of materials. But unlike Semper who argued the cladding of the structural frame by decorative wall system, Karl Botticher required maximum visibility of structural frame. This represents the different positions between Gottfried Semper and Karl Botticher

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Evaluation of BTIP's Performance After the Implementation of PPK-BLU Policy in Indonesia

  • YUWANTARI, Vera;SUMARTONO, S.;SALEH, Choirul;SANTOSO, Bambang
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.10
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    • pp.491-499
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    • 2020
  • The implementation of PPK-BLU in Indonesia was not followed by a comprehensive change in aspects of organization, human resources, and finance. Based on this background, this study aims to provide a comprehensive evaluation of the BTIP after the implementation of the PPK-BLU policy in the implementation of telecommunications services and information to the public in Indonesia. This research used integration of the McKinsey 7S method, Analytical Hierarchy Process, and Likert scale. The integration of these methods can provide a detailed quantitative analysis. Based on the overall evaluation results of carrying out the PPK BLU, BTIP has a performance value of 81.195%, which puts it within the Good category. The McKinsey 7S elements used as a whole have the following values: one aspect is categorized as Very Good, namely, the strategy aspect with a value of 91.025%; two aspects are categorized as Good (structural aspects with a value of 86.857%, and skill aspects with a value of 81.432%); three aspects are categorized as Adequate (style aspect with a value of 76.441%, staff aspect with a value of 78.605%, and share value aspect with a value of 76.331%); one aspect is categorized as Bad, that is the system aspect with a value of 67.503%.

A Study on Small Size Plans of Vertical Extension Remodeling for Aged Apartment (노후 공동주택 리모델링 수직증축분 소형 평면 계획에 대한 연구)

  • Choi, Jaepil;Choi, Junho;Kim, Youngsun
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.8
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    • pp.3-11
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    • 2018
  • This study suggested practical considerations in case of planning Small-Sized Household Units of the Vertical Extension of Aged Apartment along with selecting particular Age-Apartment Complex to plan Small-Sized Household Units. Four parts of consideration; (1) Architectural planning aspects, (2) Resident aspects, (3) Structural aspects, and (4) Facility aspects were thoroughly examined to apply in the remodeling construction period. Proposals for Small-Sized Household Units, in this study, covered two different combinations. One was the combination of six equal units, the other was the combination of eleven different types of household units which reflected resident aspects in plan organizations. Plan organization proposal could be chosen and applied to Vertical Extended units by Local Government, Remodeling Association, or Constructor based on their potential residents' aspect, such as family size, life style, age, amount to income and etc. to fulfill their satisfaction. Furthermore, this study had great significance of the adequately reflecting demand on Small-Sized Household Units in Vertical Extension of Aged Apartment.

Development of Home Visiting Nursing Standards Base on a Long-Term Care Insurance for the Elderly Program (노인장기요양보험제도에 의한 방문간호 표준개발)

  • Kim, Myung-Hee
    • Journal of Korean Public Health Nursing
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    • v.24 no.2
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    • pp.285-301
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    • 2010
  • Purpose: The study was aimed at qualitatively enhancing and promoting a home visiting nursing program established in Korea on July 1, 2008, as part of the Long-Term Care Insurance for the Elderly program. Methods: Structural, procedural and consequential aspects of home visiting nursing care wereclassified on the horizontal axis by applying the standard notions for the evaluation of medical care (Donabedian, 1998). At the same time, the home visiting nursing care service support system and the service provision system weredivided on the vertical axis with reference to the accreditation standards for home visiting nursing care organizations suggested by the Joint Commission on the Accreditation of Healthcare Organizations (JCAHO, 2008). The data were collected from June 4, 2008 to October 27, 2008, and were analyzed using SPSS ver. 15.0. Results: Twenty-two (proposed) standards, centered on the standard elements under the conceptual framework of the study, were developed, and comprised structural aspects (n=10), procedural aspects (n=6) and consequential aspects (n=6). Those criteria and indicators underwent two content validity surveys among groups of home visiting nursing care research and training experts. The research produced 22 proposed standards, 50 proposed criteria and 166 proposed indicators. Conclusion: The home visiting nursing care standards developed pursuant to the Long-Term Care Insurance for the Elderly Act and the applicability of these standards need to be verified by home visiting nurses. These proposed standards should prove useful in developing an assessment tool to encourage the qualitative enhancement of visiting nursing care in Korea.

Structural optimization in practice: Potential applications of genetic algorithms

  • Krishnamoorthy, C.S.
    • Structural Engineering and Mechanics
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    • v.11 no.2
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    • pp.151-170
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    • 2001
  • With increasing competition, the engineering industry is in need of optimization of designs that would lead to minimum cost or weight. Recent developments in Genetic Algorithms (GAs) makes it possible to model and obtain optimal solutions in structural design that can be put to use in industry. The main objective of this paper is to illustrate typical applications of GAs to practical design of structural systems such as steel trusses, towers, bridges, reinforced concrete frames, bridge decks, shells and layout planning of buildings. Hence, instead of details of GA process, which can be found in the reported literature, attention is focussed on the description of the various applications and the practical aspects that are considered in Genetic Modeling. The paper highlights scope and future directions for wider applications of GA based methodologies for optimal design in practice.