• Title/Summary/Keyword: Side members

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Structural Equation Modeling on Health-Related Quality of Life in Adults with Epilepsy (성인 뇌전증 환자의 건강관련 삶의 질 구조모형)

  • Ko, Jeong Ok;Lee, Myung Ha
    • Journal of Korean Academy of Nursing
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    • v.47 no.5
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    • pp.624-637
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    • 2017
  • Purpose: This study aimed to identify variables influencing the health-related quality of life (HRQoL) of adults with epilepsy in order to establish a structural model and design an intervention strategy to improve patients' HRQoL. Methods: The selected subjects were 212 patients with epilepsy aged between 18 and 70 years who were currently receiving treatment from hospital, general hospital, and clinic. They were surveyed using a structured questionnaire. Results: The goodness of fit measures of the final hypothetical model were as follows: ${\chi}^2/df=2.51$, GFI=.91, AGFI=.90, CFI=.96, SRMR=.04, NFI=.93, and RMSEA=.08. The major variables influencing the HRQoL of adults with epilepsy were epilepsy self-efficacy, depression, social support, and side effects of anti-epileptic drugs (AEDs), which were significant in the mentioned order, whereas the duration of AEDs use and perceived stigma did not show any effects. Six variables accounted for 75.6% of HRQoL. Variables having a direct and total effect on the HRQoL of adults with epilepsy were the side effects of AEDs, social support, epilepsy self-efficacy, and depression, and those with an indirect effect were the side effects of AEDs and social support. Conclusion: It is necessary to accurately identify the side effects of AEDs in adults with epilepsy and accurately observe the physical changes caused by depression. In addition, it is imperative to establish an active and effective nursing intervention program to strengthen the self-efficacy of the patients and to improve their quality of life through social support provided by family members and medical professionals.

Study on the progressive collapse resistance of CP-FBSP connections in L-CFST frame structure

  • Xiong, Qingqing;Wu, Wenbo;Zhang, Wang;Chen, Zhihua;Liu, Hongbo;Su, Tiancheng
    • Steel and Composite Structures
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    • v.44 no.3
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    • pp.437-450
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    • 2022
  • When the vertical load-bearing members in high-rise structures fail locally, the beam-column joints play an important role in the redistribution of the internal forces. In this paper, a static laboratory test of three full-scale flush flange beam-reinforced connections with side and cover plates (CP-FBSP connection) with double half-span steel beams and single L-shaped columns composed of concrete-filled steel tubes (L-CFST columns) was conducted. The influence of the side plate width and cover plate thickness on the progressive collapse resistance of the substructure was thoroughly analyzed. The failure mode, vertical force-displacement curves, strain variation, reaction force of the pin support and development of internal force in the section with the assumed plastic hinge were discussed. Then, through the verified finite element model, the corresponding analyses of the thickness and length of the side plates, the connecting length between the steel beam flange and cover plate, and the vertical-force eccentricity were carried out. The results show that the failure of all the specimens occurred through the cracking of the beam flange or the cover plate, and the beam chord rotations measured by the test were all greater than 0.085 rad. Increasing the length, thickness and width of the side plates slightly reduced the progressive collapse resistance of the substructures. The vertical-force eccentricity along the beam length reduced the progressive collapse resistance of the substructure. An increase in the connecting length between the beam flange and cover plate can significantly improve the progressive collapse resistance of substructures.

DYNAMIC MODELING AND ANALYSIS OF VEHICLE SMART STRUCTURES FOR FRONTAL COLLISION IMPROVEMENT

  • Elemarakbi, A.M.;Zu, J.W.
    • International Journal of Automotive Technology
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    • v.5 no.4
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    • pp.247-255
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    • 2004
  • The majority of real world frontal collisions involves partial overlap (offset) collision, in which only one of the two longitudinal members is used for energy absorption. This leads to dangerous intrusions of the passenger compartment. Excessive intrusion is usually generated on the impacted side causing higher contact injury risk on the occupants compared with full frontal collision. The ideal structure needs to have extendable length when the front-end structure is not capable to absorb crash energy without violating deceleration pulse requirements. A smart structure has been proposed to meet this ideal requirement. The proposed front-end structure consists of two hydraulic cylinders integrated with the front-end longitudinal members of standard vehicles. The work carried out in this paper includes developing and analyzing mathematical models of two different cases representing vehicle-to-vehicle and vehicle-to-barrier in full and offset collisions. By numerical crash simulations, this idea has been evaluated and optimized. It is proven form numerical simulations that the smart structures bring significantly lower intrusions and decelerations. In addition, it is shown that the mathematical models are valid, flexible, and can be used in an effective way to give a quick insight of real life crashes.

Yield penetration in seismically loaded anchorages: effects on member deformation capacity

  • Tastani, S.P.;Pantazopoulou, S.J.
    • Earthquakes and Structures
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    • v.5 no.5
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    • pp.527-552
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    • 2013
  • Development of flexural yielding and large rotation ductilities in the plastic hinge zones of frame members is synonymous with the spread of bar reinforcement yielding into the supporting anchorage. Yield penetration where it occurs, destroys interfacial bond between bar and concrete and reduces the strain development capacity of the reinforcement. This affects the plastic rotation capacity of the member by increasing the contribution of bar pullout. A side effect is increased strains in the compression zone within the plastic hinge region, which may be critical in displacement-based detailing procedures that are linked to concrete strains (e.g. in structural walls). To quantify the effects of yield penetration from first principles, closed form solutions of the field equations of bond over the anchorage are derived, considering bond plastification, cover debonding after bar yielding and spread of inelasticity in the anchorage. Strain development capacity is shown to be a totally different entity from stress development capacity and, in the framework of performance based design, bar slip and the length of debonding are calculated as functions of the bar strain at the loaded-end, to be used in calculations of pullout rotation at monolithic member connections. Analytical results are explored parametrically to lead to design charts for practical use of the paper's findings but also to identify the implications of the phenomena studied on the detailing requirements in the plastic hinge regions of flexural members including post-earthquake retrofits.

Plate Type New Distributor Development for Hydraulic Motors and Pumps (유압모터 및 펌프용 판 형태의 새로운 분배기 개발)

  • Jin, Seong-Mu;Kim, Hyeong-Ui
    • 한국기계연구소 소보
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    • s.18
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    • pp.75-85
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    • 1988
  • The distributor for hydraulic pumps or motors, particularly radial piston motors, include rotary member which has equally both surface shape for dynamic balance and two fixed members, located in both side of rotary member, which have equal surface shape for dynamic balance and circular ring which use to retain predetermined clearance between two fixed members. Rotary member must have valve part for flow-distribution and can have hydrostatic bearing for excellently dynamic balance. At least two annular steps located on said pressure plate which use in compensation of bolt expansion.

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Experimental and numerical study on innovative seismic T-Resisting Frame (TRF)

  • Ashtari, Payam;Sedigh, Helia Barzegar;Hamedi, Farzaneh
    • Structural Engineering and Mechanics
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    • v.60 no.2
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    • pp.251-269
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    • 2016
  • In common structural systems, there are some limitations to provide adequate lateral stiffness, high ductility, and architectural openings simultaneously. Consequently, the concept of T-Resisting Frame (TRF) has been introduced to improve the performance of structures. In this study, Configuration of TRF is a Vertical I-shaped Plate Girder (V.P.G) which is placed in the middle of the span and connected to side columns by two Horizontal Plate Girders (H.P.Gs) at each story level. System performance is improved by utilizing rigid connections in link beams (H.P.Gs). Plastic deformation leads to tension field action in H.P.Gs and causes energy dissipation in TRF; therefore, V.P.G. High plastic deformation in web of TRF's members affects the ductility of system. Moreover, in order to prevent shear buckling in web of TRF's members and improve overall performance of the system, appropriate criteria for placement of web stiffeners are presented in this study. In addition, an experimental study is conducted by applying cyclic loading and using finite element models. As a result, hysteresis curves indicate adequate lateral stiffness, stable hysteretic behavior, and high ductility factor of 6.73.

A Study on the Effect of the Stop-hole on the Fatigue Crack Growth Rates in Tensile Members (인장부재(引張部材)에 뚫은 Stop-hole 이 피로균열성장율(疲勞龜裂成長率)에 미치는 영향(影響)에 관한 연구(研究))

  • Chang, Dong Il;Jung, Kyoung Sup
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.7 no.4
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    • pp.115-124
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    • 1987
  • Stop-hole method is one of the conventional methods for the temporary repair or reinforcement of the member in the case that the structural steel member has a fatigue crack. In this study, the stop-hole method. have been estimated quantitatively in terms of survival life time of the side edge cracked specimen. For this purpose, fatigue tests have been performed on the test specimens and the fatigue crack growth rates of the structural steel (SS41) members have been measured under load of constant amplitude. The results of this experiment show that it is desirable to use the stop-hole method before the crack reaches the region of elasto-plastic behaviour.

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A study on the RSS-Based dissemination model to support the personalization of academic information (학회정보 개인화 지원을 위한 RSS기반 유통 모델 연구)

  • Kwon, Lee-Nam;Kim, Jae-Soo
    • Proceedings of the Korea Contents Association Conference
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    • 2004.11a
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    • pp.545-553
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    • 2004
  • A researcher, who is a member of an academic society, is required to write a report on his or her research and present it at an academic workshop in order to have the contents of the research recognized by others. In order to do that, the researcher frequently has to look up the web pages of each workshop for information such as the submission deadline, paper information, announcements and news. On the other hand, the academic society mostly relies on e-mail or bulletin board to send information about itself to its members to inform its members about its latest news or developments. A system where the researcher can gain all the information required through just a single click and the academic society can provide its members with the necessary information through a simple step is required for the ease of both side. We will take a look at the domestic status of researches being done on such systems where the RSS standard has been applied and suggest a RSS-based dissemination model where the concept of personalization has been applied to satisfy the needs of the individual user.

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Breaking Bad News: Patient Preferences and the Role of Family Members when Delivering a Cancer Diagnosis

  • Rao, Abha;Sunil, Bhuvana;Ekstrand, Maria;Heylen, Elsa;Raju, Girish;Shet, Arun
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.4
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    • pp.1779-1784
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    • 2016
  • Background: Western physicians tend to favour complete disclosure of a cancer diagnosis to the patient, while non-Western physicians tend to limit disclosure and include families in the process; the latter approach is prevalent in clinical oncology practice in India. Few studies, however, have examined patient preferences with respect to disclosure or the role of family members in the process. Materials and Methods: Structured interviews were conducted with patients (N=127) in the medical oncology clinic of a tertiary referral hospital in Bangalore, India. Results: Patients ranged in age from 18-88 (M=52) and were mostly male (59%). Most patients (72%) wanted disclosure of the diagnosis cancer, a preference significantly associated with higher education and English proficiency. A majority wanted their families to be involved in the process. Patients who had wanted and not wanted disclosure differed with respect to their preferences regarding the particulars of disclosure (timing, approach, individuals involved, role of family members). Almost all patients wanted more information concerning their condition, about immediate medical issues such as treatments or side effects, rather than long-term or non-medical issues. Conclusions: While most cancer patients wanted disclosure of their disease, a smaller group wished that their cancer diagnosis had not been disclosed to them. Regardless of this difference in desire for disclosure, both groups sought similar specific information regarding their cancer and largely favoured involvement of close family in decision making. Additional studies evaluating the influence of factors such as disease stage or family relationships could help guide physicians when breaking bad news.

A Study on the Development of Working Uniform for Volunteer Fire Brigade Members (의용소방대의 근무복 개발에 관한 연구)

  • Seok, Hye-Jung;Kim, In-Sook;Chung, Gi-Soo;Bae, Ju-Hyeong;Kwon, Myoung-Sook;Yang, Min-Jae
    • Journal of the Korean Home Economics Association
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    • v.44 no.7 s.221
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    • pp.63-72
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    • 2006
  • The purpose of this study was to survey the wearing practices and problems in the working uniform for volunteer fire brigade members and then to develop its design with a improved movement adaptability, physical suitability, ease for equipment accommodation, functionality, convenience and fit. Based on the questionnaire, we have made a testing uniform for volunteer fire brigade members first. Through a subjective analysis for functionality and apparence, we suggested a final design. The final design includes the following elements: 1. It was a two-piece style composed of a jumper and trousers with the upper garments pulled out. Raglan sleeves were used to increase arm's movement scope. Pleats and velcro tapes were attached along the base hem of sleeves to prevent heat transmission. 2. Various types of pockets were attached to secure enough space for keeping things. 3. In trousers, spare space was given at the buttock area with rubber string inserted only at selected part of side lines, and knee pads were attached to prevent wearing out.