• Structural Engineering and Mechanics
• /
• v.15 no.1
• /
• pp.115-134
• /
• 2003

The Ting Kau Bridge in Hong Kong is a cable-stayed bridge comprising two main spans and two side spans. The bridge deck is supported by three towers, an end pier and an abutment. Each of the three towers consists of a single reinforced concrete mast which reduces its section in steps, and it is strengthened by transverse cables and struts in the transverse vertical plane. The bridge deck is supported by four inclined planes of cables emanating from anchorages at the tower tops. In view of the threat from typhoons, the dynamic behaviour of long-span cable-supported bridges in the region is always an important consideration in their design. This paper is devoted to the ambient vibration measurements of the bridge for evaluation of dynamic characteristics including the natural frequencies and mode shapes. It also describes the modelling of the bridge. A few finite element models are developed and calibrated to match with the field data and the results of subsequent structural health monitoring of the bridge.

• The Korean Journal of Rehabilitation Nursing
• /
• v.7 no.1
• /
• pp.58-67
• /
• 2004

Behavioral symptoms are frequent and problematic components of dementia. The aim of this study was to detect behavioral problem of the 25 item of dementia problem behaviour(DPB)assesment scale for demented older adults. Seventy-three patients with dementia staying in the day care center, group home, dementia hospital, nursing home were recruited data on problematic behavior obtained through interviews with their caregiver during 2 months from March to May 2004. Results shows that problematic behaviors common occurring in 95% of subjects. The most frequently exhibited problematic behaviors were repetitive movement(1.05), repetitive questions(1.03), restlessness(1.0). indifference(0.97). shouting/screaming(0.92). Problematic Behaviors of the demented older adults were closely associated to the distress for caregiver. Most distressful ones for caregivers were repetitive questions(1.46), repetitive movement(1.42), shouting/screaming (1.42), indifference(1.41). restlessness(1.41). Problematic Behaviors of the demented older adults were divided into six subdivisions, among those restless behavior was positively correlated with aggressive behavior, nervous symptom and psychotic symptom. and then nervous symptom was interrelated to psychotic symptom(P<0.01). This study has limitation that field study data were derived from various primary caregivers.

• Nuclear Engineering and Technology
• /
• v.47 no.7
• /
• pp.827-837
• /
• 2015

Following a severe accident in a nuclear power plant, iodine is a major contributor to the potential health risks for the public. Because the amount of iodine released largely depends on its volatility, iodine's behavior in containment has been extensively studied in international programs such as International Source Term Programme-Experimental Program on Iodine Chemistry under Radiation (EPICUR), Organization for Economic Co-operation and Development (OECD)-Behaviour of Iodine Project, and OECD-Source Term Evaluation and Mitigation. Korea Institute of Nuclear Safety (KINS) has joined these programs and is developing a simplified, stand-alone iodine chemistry model, RAIM (Radio-Active Iodine chemistry Model), based on the IMOD methodology and other previous studies. This model deals with chemical reactions associated with the formation and destruction of iodine species and surface reactions in the containment atmosphere and the sump in a simple manner. RAIM was applied to a simulation of four EPICUR tests and one Radioiodine Test Facility test, which were carried out in aqueous or gaseous phases. After analysis, the results show a trend of underestimation of organic and molecular iodine for the gas-phase experiments, the opposite of that for the aqueous-phase ones, whereas the total amount of volatile iodine species agrees well between the experiment and the analysis result.

• Journal of agricultural medicine and community health
• /
• v.33 no.3
• /
• pp.279-291
• /
• 2008

= ABSTRACT =Objectives : We evaluated the effect of the aircraft noise on the behavior and affect status of the local elementary school students. Methods : The daytime noise levels of the exposed and control areas were compared and the self answered questionnaires from 272 students and their parents of the exposed area and 91 of the control area were collected. The questionnaires are regarding the noise sensitivity and the psychosocial status of the students, noise sensitivity of the parents and the parents' behavioral evaluation for their children. Results : The mean noise level of the exposed area (67.6 dB(A)) showed higher level than the control area (57.1 dB(A), 58.2 dB(A), 60.2 dB(A)) and it was statistically significant. The mean score for noise sensitivity and the mean score for brief mental exam. in the exposed students were lower than the mean scores in the control group but they were not statistically significant (p=0.056 & 0.165). The mean score for behavioral evaluation of students by their parents in the exposed area(15.5) was higher than the mean score in the control group(13.2) and it was statistically significant(p=0.043). The mean score for noise sensitivity in the exposed parent(27.5) was higher than the mean score in the control group(24.1) and it was statistically significant(p=0.045). Conclusions : This study revealed that the noise sensitivity of the parents affected the behavioral evaluation of the students than noise-exposure itself. The further study is needed to evaluate relationship between aircraft noise and it's effect on children's health.

• Proceedings of the KAIS Fall Conference
• /
• 2009.12a
• /
• pp.326-330
• /
• 2009

본 연구는 일반 성인남성과 직업군인의 건강형태 및 의료이용에 대해서 2005년도 국민건강 영양조사의 자료를 질병관리본부로부터 획득하여 분석하였고 그 결과를 보면 전체조사 대상자는 8,384명으로 21세~55세의 일반성인남성과 직업군인만을 선정하였으며, 직업군인은 76명, 일반 성인 남자는 8,308명이었다. 보건의식 행태 분포에서 보면 현재 흡연상태는 일반인에 비해 직업군인이 높고, 주관적 체격인식은 일반인의 경우 비만 또는 매우 비만이라 인지하는 비율이 직업군인에 비하여 높게 나타났지만, 실제로 지난 1년간 체중조절 여부는 일반인이 오히려 직업군인에 비해 높게 나타났다. 또한 직업군인의 보건의식 행태는 평균 연령(p<0.05)에서 통계적으로 유의한 차이가 있는 것으로 나타났다. 월간 침상와병일수는 직업군인이 상대적으로 높았으나 월간 결석, 결근일수는 오히려 낮게 나타났다. 더불어 월간 결석, 결근일수(p<0.05)는 통계적으로 유의한 차이를 나타났다. 연간 입원이용율은 일반인이 높았으며, 평균 재원일수, 건당 평균 입원기간은 일반인에 비해 직업군인이 길었다. 2주간 외래 이용율은 일반인이 17.2%, 직업군인이 21.6%로 직업 군인의 외래이용이 많았고, 평균 외래이용 횟수에서도 일반인이 1.92, 직업군인이 2.44로 직업군인이 많았다. 이용한 보건의료기관의 종류에서는 일반인은 의원급이, 직업군인은 병원급의 외래이용이 많았고 2주간 약국 이용율은 직업군인이 16.2%로 일반인 22.0% 에 비하여 낮았다. 연간 사고 및 중독 발생자율은 직업군인이 9.5로 일반인 7.9에 비하여 높게 나타 났으며, 사고 및 중독 발생횟수에서는 일반인이 직업군인에 비하여 높았다. 의도성별 분포(p<0.05), 주치료기관(p<0.05)은 통계적으로 유의한 차이가 나타났다. 본 연구를 통해 일반적 특성, 보건의식행태, 건강수준의 분석 및 일반적 특성을 보정한 상태에서 일반 성인남성과 직업군인의 보건의식 행태와 의료이용 분포를 비교 분석한 것으로 향후 직업군인의 건강 증진을 위한 효과적인 교육과 정책수립에 필요한 기초자료가 될 수 있을 것으로 기대해 본다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.1
• /
• pp.493-505
• /
• 2017

This study examined the relationships between health behavior, premenstrual coping, premenstrual syndrome symptoms, and subjective happiness of female college students. The data were collected through self-report questionnaires between March 7 and April 20, 2016. Participants were comprised of a convenience sample of 122 female college students. Stepwise multiple regression analysis revealed subjective health status (${\beta}=.23$, p<.011), premenstrual syndrome symptoms (${\beta}=-.22$, p<.012), and average length of menstrual period (${\beta}=-.17$, p<.044) to be significant predictors of subjective happiness in female college students. These variables accounted for 14.0% of subjective happiness scores. It is meaningful that premenstrual syndrome symptoms and average length of menstrual period affected the subjective happiness in female college students. Therefore, to facilitate subjective happiness in female college students, efficient management and intervention regarding premenstrual syndrome symptoms and general health are required.

• The Korean Society of Law and Medicine
• /
• v.12 no.2
• /
• pp.265-291
• /
• 2011

Changes in a drug's availability from prescription only to over-the-counter (OTC) status is of concern to physicians from both public health and individual patient perspectives. Government has generally been supportive of changes in medications from prescription(Rx) to over-the-counter (OTC) status in Korea, however, recognizing that there are both benefits and risks to any health care intervention, health care professionals are conservative in implementing changes to either the process or structure of health care. Changes in status of a drug from Rx to OTC can represent a change in both structure and process. Cost and convenience seem to be major factors in determining whether, given the choice, patients purchase a medicine over the counter or obtain it on prescription. With current arrangements, exemption from prescription charges provides an incentive to continue to obtain products on NHS prescription even when they are available over the counter. There is therefore no simple relation between the availability of over the counter medicines and the level of prescribing of deregulated products. The appropriate use of over the counter medicines-particularly those that have only recently been deregulated-places a burden of care on community pharmacists and calls for closer working relationships with general practitioners. In particular, systems for referral and for recording details of both prescribed and over the counter medicines need to be developed, and a direct route needs to be established for community pharmacists to report adverse drug reactions to over the counter products. Reclassification of prescription medicines-by making them available through pharmacies without a prescription-provides the opportunity for consumers to purchase a wider range of medicinal products without making a demand on NHS resources. There is, however, no simple relation between availability of over the counter medicines and demand for NHS prescriptions. In the late 1980s the UK government fuelled the over the counter market by making it easier to reclassify certain medicines from prescription only status to allow over the counter sale in pharmacies. To explore the influence of deregulation of medicines on NHS prescribing, this article presents analyses of consumer behaviour in using medicines and prescribers' attitudes to over the counter medication and collates findings from research. Policy makers should be aware that patients' expectations in relation to OTC medicines may be in conflict with evidence-based practice.

• The Korean Journal of Food & Health Convergence
• /
• v.5 no.1
• /
• pp.1-11
• /
• 2019

Smoking has become one of the public health harzard affecting the world. In the UK, smoking is responsible for around one in five deaths. The illnesses caused by smoking extend beyond the well-reported links with cancer, heart disease and respiratory illnesses. Hence the research to determine the awareness of the predisposing factor to smoking among adults in sokoto metropolis. A cross-sectional form of descriptive survey research design was used for this study. This is because descriptive studies are used when the characteristics of a population are either unknown or partially known (Hennekens & Buring, 2007), and it was used by Ganley and Rosario (2013) in a related research this justified the use of similar design in a study of similar nature.Two hundred and seventy returned questionnaire was collected, analyzed using descriptive statistic of frequency count, normative percentage and grand mean; as well as inferential statistics of chi-square (${\chi}^2$). The level of significant was fixed at 0.05. Appropriate degrees of freedom were worked out. There was statistical significant influence or relationship with marital status on the predisposing factors of smoking chi-square of 19716.516 greater than the critical value 43.77297at df 30 p<0.05. There were statistical significance chi-square =27468.348 which is greater than the critical value 43.77297 at df= 30. These show that there is a relationship on gender awareness of predisposing factors to smoking rejecting the null hypotheses. The respondents across different lever/year higher institution shows that the awareness of predisposing factors of smoking there were a statistical significance difference chi-square =7168.429 (df=88) greater than critical value 102.342 rejecting the null hypotheses. There is consistent evidence that links exposure to depictions of smoking in movies and initiation of smoking in young people. Over the years television shows and films have effectively built up associations between smoking and glamour, sex and risk-taking. Social learning theory describes how we learn by example from others. We are strongly influenced by our parents, and other people we look up to, such as peers, actors and pop stars. This can lead us to emulate their behaviour and try smoking.

• Asian Pacific Journal of Cancer Prevention
• /
• v.14 no.4
• /
• pp.2643-2647
• /
• 2013

Background: Despite anti-smoking campaigns, smoking prevalence among Thai males aged 30 or older is high, at around 50%. The purpose of this study was to determine the relationship between smoking and mortality in a rural Thai community. Materials and Methods: Subjects enrolled into the Khon Kaen cohort study between 1990 and 2001 were followed up for their vital status until $16^{th}$ March 2012. The death resource was from the Bureau of Policy and Strategy, Ministry of Interior, Thailand. A Cox proportional hazards model was used to analyse the association between smoking and death, controlling for age, education level and alcohol drinking, and confidence intervals were calculated using the floating risk method. Results: The study recruited 5,962 male subjects, of whom 1,396 died during a median 13.5 years of follow-up. Current smokers were more likely to die than never smokers after controlling for age, education level and alcohol drinking (HR, 95%CI: 1.41, 1.32-1.51), and the excess mortality was greatest for lung cancer (HR, 95%CI: 3.51, 2.65-4.66). However, there was no increased risk with increasing dose of tobacco, and no difference in risk between smokers of yamuan (hand-rolled cigarettes) and manufactured tobacco. Conclusion: Mortality from cancer, particularly lung cancer, and from all causes combined is dependent on smoking status among men in rural Thailand, but the relative risks are lower than have been reported from studies in high income countries, where the tobacco epidemic is more established.

• Smart Structures and Systems
• /
• v.13 no.4
• /
• pp.587-614
• /
• 2014

In recent years the interest in online monitoring of lightweight structures with ultrasonic guided waves is steadily growing. Especially the aircraft industry is a driving force in the development of structural health monitoring (SHM) systems. In order to optimally design SHM systems powerful and efficient numerical simulation tools to predict the behaviour of ultrasonic elastic waves in thin-walled structures are required. It has been shown that in real industrial applications, such as airplane wings or fuselages, conventional linear and quadratic pure displacement finite elements commonly used to model ultrasonic elastic waves quickly reach their limits. The required mesh density, to obtain good quality solutions, results in enormous computational costs when solving the wave propagation problem in the time domain. To resolve this problem different possibilities are available. Analytical methods and higher order finite element method approaches (HO-FEM), like p-FEM, spectral elements, spectral analysis and isogeometric analysis, are among them. Although analytical approaches offer fast and accurate results, they are limited to rather simple geometries. On the other hand, the application of higher order finite element schemes is a computationally demanding task. The drawbacks of both methods can be circumvented if regions of complex geometry are modelled using a HO-FEM approach while the response of the remaining structure is computed utilizing an analytical approach. The objective of the paper is to present an efficient method to couple different HO-FEM schemes with an analytical description of an undisturbed region. Using this hybrid formulation the numerical effort can be drastically reduced. The functionality of the proposed scheme is demonstrated by studying the propagation of ultrasonic guided waves in plates, excited by a piezoelectric patch actuator. The actuator is modelled utilizing higher order coupled field finite elements, whereas the homogenous, isotropic plate is described analytically. The results of this "semi-analytical" approach highlight the opportunities to reduce the numerical effort if closed-form solutions are partially available.