• Title/Summary/Keyword: behavioural

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Performance assessment of RC frame designed using force, displacement & energy based approach

  • Kumbhara, Onkar G.;Kumar, Ratnesh
    • Structural Engineering and Mechanics
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    • v.73 no.6
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    • pp.699-714
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    • 2020
  • Force based design (FBD) approach is prevalent in most of the national seismic design codes world over. Direct displacement based design (DDBD) and energy based design (EBD) approaches are relatively new methods of seismic design which claims to be more rational and predictive than the FBD. These three design approaches are conceptually distinct and imparts different strength, stiffness and ductility property to structural members for same plan configuration. In present study behavioural assessment of frame of six storey RC building designed using FBD, DDBD and EBD approaches has been performed. Lateral storey forces distribution, reinforcement design and results of nonlinear performance using static and dynamic methods have been compared. For the three approaches, considerable difference in lateral storey forces distribution and reinforcement design has been observed. Nonlinear pushover analysis and time history analysis results show that in FBD frame plastic deformation is concentrated in the lower storey, in EBD frame large plastic deformation is concentrated in the middle storeys though the inelastic hinges are well distributed over the height and, in DDBD frame plastic deformation is approximately uniform over the height. Overall the six storey frame designed using DDBD approach seems to be more rational than the other two methods.

The Influence of EWOM on Passengers' Behavioral Intentions (항공사에 대한 온라인 구전이 승객행동에 미치는 영향에 관한 연구)

  • Kim, Yong-Sook;Park, Jin-Woo
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.25 no.2
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    • pp.39-47
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    • 2017
  • The ultimate aim of this research is to analyze the effects of on-line word of mouth (WOM) regarding airlines on behavior intention of airline passengers through information accommodation, attitude and trust. For the purpose, we have carried out a questionnaire survey with passengers who have used airline social media and websites as target, and analyzed a total of 362 copies of the questionnaire using structural equation. As a result of analysis, on-line WOM turned out to have a significant effect on accommodation, and the accommodation turned out to have significant effects on attitude and trust. Also, attitude turned out to have a significant effect on trust, and the trust turned out to have a significant effect on behavior intention. This research has significance in that it can help establish a WOM marketing strategy of airlines through grasping the actual situation of on-line WOM of airlines and present a possibility of WOM marketing utilizing social media as an appropriate marketing for aviation industry. At the same time, it also has an academic significance in that it predicted actual behavior intention of passengers who have used on-line WOM on airlines.

Wind-Induced Motion of Tall Buildings: Designing for Occupant Comfort

  • Burton, M.D.;Kwok, K.C.S.;Abdelrazaq, A.
    • International Journal of High-Rise Buildings
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    • v.4 no.1
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    • pp.1-8
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    • 2015
  • A team of researchers and practitioners were recently assembled to prepare a monograph on "Wind-Induced Motion of Tall Buildings: Designing for Habitability". This monograph presents a state-of-the-art report of occupant response to wind-induced building motion and acceptability criteria for wind-excited tall buildings. It provides background information on a range of pertinent subjects, including: ${\bullet}$ Physiological, psychological and behavioural traits of occupant response to wind-induced building motion; ${\bullet}$ A summary of investigations and findings of human response to real and simulated building motions based on field studies and motion simulator experiments; ${\bullet}$ A review of serviceability criteria to assess the acceptability of wind-induced building motion adopted by international and country-based standards organizations; ${\bullet}$ General acceptance guidelines of occupant response to wind-induced building motion based on peak acceleration thresholds; and ${\bullet}$ Mitigation strategies to reduce wind-induced building motion through structural optimization, aerodynamic treatment and vibration dissipation/absorption. This monograph is to be published by the American Society of Civil Engineers (ASCE) and equips building owners and tall building design professionals with a better understanding of the complex nature of occupant response to and acceptability of wind-induced building motion. This paper is a brief summary of the works reported in the monograph.

A Study on the Symptom Severity and the Behavioural and Psychosocial Factors of the Patients with Temporomandibular Disorders (측두하아장애 환자의 증상심도와 행동 및 사회심리적 요인에 관한 연구)

  • Bo-Young Um;Sung-Chang Chung
    • Journal of Oral Medicine and Pain
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    • v.13 no.1
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    • pp.71-84
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    • 1988
  • The author examined 206 temporomandibular disorders patients, who visited department of Oral Diagnosis and Oral Medicine in Seoul National University Hospital during the period from May 1st 1987 to April 30th 1988, clinically and radiologically and with prepared questionnaire. By clinical and radiological examination, the patients were divided into 2 groups(the patients with temporomandibular joint internal derangement and myofacial pain dysfunction syndrome or with myofacial pain dysfunction syndrome: the patient with temporomandibular joint internal derangement only). The symptom severity index and contributing factors were examined with the questionnaire, and differences in 2 groups were studied. The conclusions are followings : 1. The symptom severity index presenting the severity of symptom was higher and the scope of symptom was wider in the patients with temporomandibular joint internal derangement and myofacial pain dysfunction syndrome or with myofacial pain dysfunction compared to the patients with temporomandibular joint internal derangement only. 2. Emotions, behaviors, cognitions, and social factors were more undesirable in the patients with temporomandibular joint internal derangement and myofacial pain dysfunction syndrome or with myofacial pain dysfunction syndrome than the patients with temporomandibular joint internal derangement only.

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Factors Associated with Health Promotion of Caregivers Based on a Socio-ecological Model (사회생태모형에 기초한 요양보호사 건강증진행위의 관련요인)

  • Kim, Young-Ae;Yoon, Hee-Sang
    • Journal of Korean Public Health Nursing
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    • v.25 no.1
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    • pp.61-72
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    • 2011
  • Purpose: To investigate the behavioural factors of the health promotion for caregivers based on a socio-ecological model. Methods: This study was a cross-sectional descriptive study using a self administered questionnaire. The survey was conducted in 219 people chosen through convenient sampling between September and December 2008. The collected information included general characteristics, individual, interpersonal, community, policy level. Results: For the statistical analysis, the t-test was used for the health promotion according to the general characteristics and to each level of the socio-ecological model, by assessing the high and low values and dividing them into mean points. The influence elicited by different health promotion factors was determined using the hierarchical multiple regression. At the individual level, the factors influencing health promotion in caregivers included perceived seriousness, perceived benefits, and self efficacy. Social support was important at interpersonal level, and the use of community resource was relevant for the community level. We found no statistically significant factors relating to the policy level. Conclusions: In conclusion, the socio-ecological models seems appropriate for explaining health promotion and its associated factors in caregivers. We suggest that, for caregivers, strategies should be developed for their social support and to offer information about how to use community resources in relation with factors relating to the individual level.

Physiological and Biochemical Modulations during Oviposition and Egg laying in the Silkworm, Bombyx mori (L.)

  • Singh, Tribhuwan;Saratchandra, Beera;Raj, H.S.Phani
    • International Journal of Industrial Entomology and Biomaterials
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    • v.6 no.2
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    • pp.115-123
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    • 2003
  • Oviposition and egg laying is an important physiological and behavioural event in the life cycle of the silkworm, Bombyx mori (L). Oviposition and egg laying is dependent on a number of intrinsic and extrinsic factors viz., neural, hormonal, environmental, physical, behavioral etc for the perpetuation of population. Although, the virgin female moths have fully developed embryos but active egg laying begins under the influence of mating which provides essential copulation stimulus for oviposition. After mating drastic biochemical changes occurred that incites egg laying under the influence of optimum environmental conditions. Weight of pupae as well as larval density has significant role on oviposition and egg laying behaviour in the silkworm wherein high pupal weight and inadequate rearing space affects not only the biology, morphology and physiology but also the oviposition and egg laying. Surface topography, plane of inclination, mating length, age of male moth, temperature and photoperiod etc has significant effect on reproductive physiology of silkworm. An attempt has been made in this review article to elucidate briefly the works carried out on mating behaviour, direct and indirect copulation stimulus, vitellogenesis, influence of environmental factors besides effect of weight of pupae and or pharate adult and larval density on oviposition and egg laying behavior in the silkworm, B. mori and its significance in silkworm seed production.

Flexural-torsional buckling tests of cold-formed steel compression members at elevated temperatures

  • Heva, Yasintha Bandula;Mahendran, Mahen
    • Steel and Composite Structures
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    • v.14 no.3
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    • pp.205-227
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    • 2013
  • Current design standards do not provide adequate guidelines for the fire design of cold-formed steel compression members subject to flexural-torsional buckling. Eurocode 3 Part 1.2 (2005) recommends the same fire design guidelines for both hot-rolled and cold-formed steel compression members subject to flexural-torsional buckling although considerable behavioural differences exist between cold-formed and hot-rolled steel members. Past research has recommended the use of ambient temperature cold-formed steel design rules for the fire design of cold-formed steel compression members provided appropriately reduced mechanical properties are used at elevated temperatures. To assess the accuracy of flexural-torsional buckling design rules in both ambient temperature cold-formed steel design and fire design standards, an experimental study of slender cold-formed steel compression members was undertaken at both ambient and elevated temperatures. This paper presents the details of this experimental study, its results, and their comparison with the predictions from the current design rules. It was found that the current ambient temperature design rules are conservative while the fire design rules are overly conservative. Suitable recommendations have been made in relation to the currently available design rules for flexural-torsional buckling including methods of improvement. Most importantly, this paper has addressed the lack of experimental results for slender cold-formed steel columns at elevated temperatures.

Medical Students' Perceptions and Intentions Regarding Patient Safety (의과대학 학생들의 환자안전에 대한 인식)

  • Lee, Hoo-Yeon;Lee, Sang-Gyu
    • Quality Improvement in Health Care
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    • v.24 no.1
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    • pp.23-29
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    • 2018
  • Background: The purpose of this study was to examine undergraduate medical students' perceptions and intentions regarding patient safety during clinical clerkships. Methods: Cross-sectional and self-administered questionnaire survey was conducted on 34 students from one medical school using a modified version of the Medical Student Safety Attitudes and Professionalism Survey (MSSAPS). We assessed $4^{rd}-year$ medical students' perceptions of the cultures ('safety', 'teamwork', and 'error disclosure'), 'behavioural intentions' concerning patient safety issues and 'overall patient safety'. The overall response rate was 66.4%. Results: Among safety domains, "teamwork culture" was rated highest. "Error disclosure culture" received the lowest ratings. Regarding the error disclosure domain, only 10% of respondents reported that they have received education or training on how to disclose medical error to patients. Independent of survey domains, when students were asked "Overall, do you think your hospital is safe based on your clinical rotation?", 61.8% reported that the hospital was safe. Conclusions: Assessing students' perceptions of safety culture can provide clerkship directors and educators with information that enhances the educational environment and promotes patient safety. Discussions of medical errors, patient safety, and how best to incorporate an analysis of these issues into the existing curriculum are needed.

Chronic Infections of the Urinary Tract and Bladder Cancer Risk: a Systematic Review

  • Anderson-Otunu, Oghenetejiri;Akhtar, Saeed
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.8
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    • pp.3805-3807
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    • 2016
  • Literature on the relationship between recurrent urinary tract infections and urinary bladder carcinoma risk has been inconsistent. Therefore, we carried out this systematic review of observational studies to ascertain if there is any association between chronic urinary tract infection and urinary bladder carcinoma. A total of 10 databases were searched using Boolean: CINAHL, PUBMED, Google Scholar, Medline, Science Direct, SCIRUS, Cochrane, UK PubMed central, NHS evidence and WHO-website. The search yielded an initial hit of 3,518 articles and after screening and critical appraisal, seven studies were included for this review. Four articles reported an association between chronic urinary tract infections and bladder cancer while three concluded a weak or no association at least in one gender. Main findings in this review were that most of the studies reported an association between chronic urinary tract infections and bladder cancer risk. However, inferences about the causal association between chronic urinary tract infections and bladder cancer risk should be drawn cautiously considering the methodological limitations of case-control studies included in this review. Therefore, more empirical evidence is needed to determine the causal nature of relationships between chronic urinary tract infections and bladder cancer risk.

The Effect of Sunk Cost and Anchoring Effect on Shipping Finance (매몰 비용과 엥카링 효과가 선박금융에 미치는 영향)

  • Kim, Wu-Seok;Lee, Ki-Hwan
    • Journal of Navigation and Port Research
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    • v.44 no.4
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    • pp.326-337
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    • 2020
  • Shipping companies have suffered additional losses because of irrational shipping finance decisions. This paper analyses the cases according to the behavioral finance theories. The theories of behavioral finance used in the analysis and research of this paper are the anchoring effect and sunk cost effect. The backgrounds and reasons for the decisions regarding ship financing are analysed based on the questionnaire responses and case studies. As a result of the analysis, it is found that the behavioral finance theories, anchoring effect, and sunk cost effect, have effects on the ship financing decisions, that errors related to behavioral finance can result in irrational decisions, and that shipping companies suffered additional losses because of the behavioral finance errors.