• Title/Summary/Keyword: multi-dimensional evaluation

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Evaluation of the effect of smart façade systems in reducing dynamic response of structures subjected to seismic loads

  • Samali, Bijan;Abtahi, Pouya
    • Earthquakes and Structures
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    • v.11 no.6
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    • pp.983-1000
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    • 2016
  • To date the engineering community has seen facade systems as non-structural elements with high aesthetic value and a barrier between the outdoor and indoor environments. The role of facades in energy use in a building has also been recognized and the industry is also witnessing the emergence of many energy efficient facade systems. This paper will focus on using exterior skin of the double skin facade system as a dissipative movable element during earthquake excitation. The main aim of this study is to investigate the potential of the facade system to act as a damper system to reduce earthquake-induced vibration of the primary structure. Unlike traditional mass dampers, which are usually placed at the top level of structures, the movable/smart double skin facade systems are distributed throughout the entire height of building structures. The outer skin is moveable and can act as a multi tuned mass dampers (MTMDs) that move and dissipate energy during strong earthquake motions. In this paper, using a three dimensional 10-storey building structure as the example, it is shown that with optimal choice of materials for stiffness and damping of brackets connecting the two skins, a substantial portion of earthquake induced vibration energy can be dissipated which leads to avoiding expensive ductile seismic designs. It is shown that the engineering demand parameters (EDPs) for a low-rise building structures subjected to moderate to severe earthquakes can be substantially reduced by introduction of a smart designed double skin system.

Evaluation of Quality of Life of Breast Cancer Patient Next-of-kin in Turkey

  • Ogce, Filiz;Ozkan, Sevgi;Okcin, Figen;Yaren, Arzu;Demiray, Gokcen
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.5
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    • pp.2771-2776
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    • 2013
  • Introduction: Quality of life (QoL) issues are of importance in relatives of women with breast cancer (BC)as caregivers in neglecting their own needs due to care of a patient and also as women regarding the potential risk of themselves developing BC. The objectives in the present study were to compare the QoL of female relatives of women in treatment for breast cancer. To date, no study had examined multi-dimensional QoL in accompanying people as compared them into two groups of female relatives whose first degree and second degree. Methods: QoL of female relatives was assessed using the Quality of Life-Family Version (QOL-FV) scale. Relationships between socio-demographic characteristics and QoL scores were analyzed using the Mann-Whitney U, Kruskal Wallis and Crosstabs tests. Results: The mean age of the female relatives was 37.6 years, and nearly 48% had a university education. It was found that first degree relatives had worse QoL in all domains except physical wellbeing than second degree relatives. Conclusion: This study showed that being female relatives of BC, especially first-degree, affect QoL negatively. Health care providers are of an important role in the stage of information related to genetic influence of BC.

A Study of Consumer Evaluations and Preferences for Men's Fashion Style Image (남성복 스타일 이미지에 대한 평가와 선호에 관한 연구)

  • Oh, Hee-Sun
    • Fashion & Textile Research Journal
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    • v.4 no.1
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    • pp.47-55
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    • 2002
  • This paper is to study pertinent consumer evaluations and preferences of fashion depending upon human sensibility. Focus is placed on quantifying consumer's sensibility through the sensibility analysis of men's fashion. The subject are 227 male and female university students of who take the course of "Modern Life and Fashion" and "Understanding of Colors" in the OCU Cyber University. Data has been collected by survey method and subsequently analyzed and interpreted. To measure consumer's consuming sensibility, G-Sensibility tool developed by 'Fuji Central Institute' has been employed. The results of the analysis of ANOVA and MANOVA show significant differences among the following 5 styles: Active style G2, Open-minded style of G-3, Mania style of G4, Sensitive and emotional style of G5. According to ${\chi}^2$ test, the results show that the distinction of sex and their interests in fashion are significant different. The evaluation of men's fashion, according to Multi-dimensional test, shows a variety of differences according gender and G sensibility styles. These varied distinctions are illustrated statistical in Picture 1, Picture 2, Picture 3, Picture 4, Picture 8, and picture 10. Based art the results, a follow-up study to develop the case study and the apply it's results are recommended to produce products placed in the market.

Window Creativity of a Fashion Store -Its Effects on Consumer Emotions and Behavioral Intentions

  • Choi, Ara;Jang, Ju Yeun;Choo, Ho Jung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.44 no.1
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    • pp.13-32
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    • 2020
  • This study investigates the multi-dimensional structure of fashion store window creativity and examines its effects on consumer responses. Through an expert evaluation survey, this study proposes that fashion store window creativity involves originality, relevance, and artistry. Two experiments are conducted to test the proposed hypotheses. Consumers' emotional responses to the level of window creativity are collected using psychophysiological and self-report methods. Fashion store window creativity has positive effects on psychophysiological affective responses. When the three dimensions of creativity are specified as explanatory factors of emotional responses, relevance and artistry show positive effects on arousal and pleasure, whereas originality has a negative effect on pleasure. Its effect on attitudes is mediated by arousal and pleasure; in addition, the effect on entering intentions is mediated by arousal. Attitudes toward window display also have a positive effect on entering intentions. This study extends existing research on creativity in marketing into the context of visual merchandising in fashion store windows. Findings provide meaningful implications in that the effects of fashion store window creativity on emotions affect consumer attitudes and behavioral intention. By adopting multiple approaches in the empirical phase of this study, the findings are built on strong reliability and validity.

Prediction of Consumer Propensity to Purchase Using Geo-Lifestyle Clustering and Spatiotemporal Data Cube in GIS-Postal Marketing System (GIS-우편 마케팅 시스템에서 Geo-Lifestyle 군집화 및 시공간 데이터 큐브를 이용한 구매.소비 성향 예측)

  • Lee, Heon-Gyu;Choi, Yong-Hoon;Jung, Hoon;Park, Jong-Heung
    • Journal of Korea Spatial Information System Society
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    • v.11 no.4
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    • pp.74-84
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    • 2009
  • GIS based new postal marketing method is presented in this paper with spatiotemporal mining to cope with domestic mail volume decline and to strengthening competitiveness of postal business. Market segmentation technique for socialogy of population and spatiotemporal prediction of consumer propensity to purchase through spatiotemporal multi-dimensional analysis are suggested to provide meaningful and accurate marketing information with customers. Internal postal acceptance & external statistical data of local districts in the Seoul Metropolis are used for the evaluation of geo-lifestyle clustering and spatiotemporal cube mining. Successfully optimal 14 maketing clusters and spatiotemporal patterns are extracted for the prediction of consumer propensity to purchase.

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Analysis of Vibration-powered Piezoelectric Energy Harvesters by Using Equivalent Circuit Models (등가 회로 모델을 이용한 압전 진동 에너지 수확 장치의 해석)

  • Kim, Jae-Eun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.4
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    • pp.397-404
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    • 2010
  • The use of equivalent circuit models of piezoelectric energy harvesters is inevitable when power circuitry including rectifying and smoothing circuit elements is connected to them for evaluating DC electrical outputs. This is because it is difficult to incorporate the electro-mechanical coupling resulting from the additional circuitry into the conventional finite element analysis. Motivated by this observation, we propose a method to accurately extract the equivalent circuit parameters by using commercially available FEM software such as ANSYS which provides three-dimensional AC piezoelectric analysis. Then the equivalent circuit can be analyzed by circuit simulators such as $SimPowerSystems^{TM}$ of MATLAB. While the previous works have estimated the circuit parameters by experimental measurements or by analytical solutions developed only for limited geometries and boundary conditions, the proposed method has no such limitation because piezoelectric energy harvesters of any shapes and boundary conditions can be treated in FEM software. For the verification of the proposed method, multi-modal AC electrical power output by using a corresponding equivalent circuit is compared with that by ANSYS. The proposed method is then shown to be very useful in the subsequent evaluation of DC electrical output which is obtained by attaching a bridge diode and a storage capacitor to a piezoelectric energy harvester.

Characteristic analysis on train-induced vibration responses of rigid-frame RC viaducts

  • Sun, Liangming;He, Xingwen;Hayashikawa, Toshiro;Xie, Weiping
    • Structural Engineering and Mechanics
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    • v.55 no.5
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    • pp.1015-1035
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    • 2015
  • A three-dimensional (3D) numerical analysis for the train-bridge interaction (TBI) system is actively developed in this study in order to investigate the vibration characteristics of rigid-frame reinforced concrete (RC) viaducts in both vertical and lateral directions respectively induced by running high-speed trains. An analytical model of the TBI system is established, in which the high-speed train is described by multi-DOFs vibration system and the rigid-frame RC viaduct is modeled with 3D beam elements. The simulated track irregularities are taken as system excitations. The numerical analytical algorithm is established based on the coupled vibration equations of the TBI system and verified through the detailed comparative study between the computation and testing. The vibration responses of the viaducts such as accelerations, displacements, reaction forces of pier bottoms as well as their amplitudes with train speeds are calculated in detail for both vertical and lateral directions, respectively. The frequency characteristics are further clarified through Fourier spectral analysis and 1/3 octave band spectral analysis. This study is intended to provide not only a simulation approach and evaluation tool for the train-induced vibrations upon the rigid-frame RC viaducts, but also instructive information on the vibration mitigation of the high-speed railway.

The Changes in a Public Management Paradigm and the Implications for Public Enterprises: A Perspective of NPM, NPG, and NPS (공공관리 패러다임의 변화와 공기업에 미치는 시사점: NPM, NPG 그리고 NPS를 중심으로)

  • Woo, Yoonseuk
    • Land and Housing Review
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    • v.12 no.3
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    • pp.1-10
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    • 2021
  • A public management paradigm matters for public enterprises as it has a direct impact on their business management and the performance evaluation on public institutions by the Ministry of Strategy and Finance. This research reviews key theories about public management that has attracted attention since the 1980s: New Public Management (NPM), New Public Governance (NPG), and New Public Service (NPS). These paradigms represent their unique features in terms of efficiency, networks, and public service, and have their own merits and shortcomings. This research asserts that more integrated and multi-dimensional approaches to the public management theories are needed to effectively cope with rapidly changing environments for public enterprises.

Integral effect test for steam line break with coupling reactor coolant system and containment using ATLAS-CUBE facility

  • Bae, Byoung-Uhn;Lee, Jae Bong;Park, Yu-Sun;Kim, Jongrok;Kang, Kyoung-Ho
    • Nuclear Engineering and Technology
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    • v.53 no.8
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    • pp.2477-2487
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    • 2021
  • To improve safety analysis technology for a nuclear reactor containment considering an interaction between a reactor coolant system (RCS) and containment, this study aims at an experimental investigation on the integrated simulation of the RCS and containment, with an integral effect test facility, ATLAS-CUBE. For a realistic simulation of a pressure and temperature (P/T) transient, the containment simulation vessel was designed to preserve a volumetric scale equivalently to the RCS volume scale of ATLAS. Three test cases for a steam line break (SLB) transient were conducted with variation of the initial condition of the passive heat sink or the steam flow direction. The test results indicated a stratified behavior of the steam-gas mixture in the containment following a high-temperature steam injection in prior to the spray injection. The test case with a reduced heat transfer on the passive heat sink showed a faster increase of the P/T inside the containment. The effect of the steam flow direction was also investigated with respect to a multi-dimensional distribution of the local heat transfer on the passive heat sink. The integral effect test data obtained in this study will contribute to validating the evaluation methodology for mass and energy (M/E) and P/T transient of the containment.

3D Mesh Model Exterior Salient Part Segmentation Using Prominent Feature Points and Marching Plane

  • Hong, Yiyu;Kim, Jongweon
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.3
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    • pp.1418-1433
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    • 2019
  • In computer graphics, 3D mesh segmentation is a challenging research field. This paper presents a 3D mesh model segmentation algorithm that focuses on removing exterior salient parts from the original 3D mesh model based on prominent feature points and marching plane. To begin with, the proposed approach uses multi-dimensional scaling to extract prominent feature points that reside on the tips of each exterior salient part of a given mesh. Subsequently, a set of planes intersect the 3D mesh; one is the marching plane, which start marching from prominent feature points. Through the marching process, local cross sections between marching plane and 3D mesh are extracted, subsequently, its corresponding area are calculated to represent local volumes of the 3D mesh model. As the boundary region of an exterior salient part generally lies on the location at which the local volume suddenly changes greatly, we can simply cut this location with the marching plane to separate this part from the mesh. We evaluated our algorithm on the Princeton Segmentation Benchmark, and the evaluation results show that our algorithm works well for some categories.