| 1. |
- al-Emrani, Mohammad, 1967, et al.
(författare)
-
Fatigue improvement of welded bridge details in stainless steel using high-frequency mechanical impact treatment
- 2018
-
Ingår i: Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018. - : CRC PRESS-TAYLOR & FRANCIS GROUP. ; , s. 446-451, s. 446-451
-
Konferensbidrag (refereegranskat)abstract
- This paper reports the results from fatigue testing on welded non-load-carrying transverse attachments made of C-Mn (S460) and stainless (LDX2101) steels. The tests are done on 40 mm thick specimens in as-welded and HFMI-treated specimens. Measurements on weld toe radius and weld residual stresses are also reported. The results show that the improvement of fatigue strength that can be achieved by HFMItreatment on welded LDX2101 steel is similar to what is obtained for equivalent C-Mn steels. Also in the aswelded condition do these two types of steel show similar fatigue strength. HFMI-treatment gives more than 5 steps increase in fatigue strength for both steels, which is higher than what specified, for example by the recommendations of the International Institute of Welding.
|
|
| 2. |
|
|
| 3. |
- al-Karawi, Hassan, 1993, et al.
(författare)
-
Mean Stress Effect in High-Frequency Mechanical Impact (HFMI)-Treated Steel Road Bridges
- 2022
-
Ingår i: Buildings. - : MDPI AG. - 2075-5309. ; 12:5
-
Tidskriftsartikel (refereegranskat)abstract
- High-frequency mechanical impact (HFMI) is a post-weld treatment method which substantially enhances the fatigue strength of steel weldments. As such, the method enables a more efficient design of bridges, where fatigue is often the governing limit state. Road bridges are typically trafficked by a large variety of lorries which generate load cycles with varying mean stresses and stress ranges. Unlike conventional welded details, the fatigue strength of HFMI-treated welds is known to be dependent on mean stress in addition to the stress range. The possibility of considering the mean stress effect via Eurocode’s fatigue load models (FLM3 and FLM4) was investigated in this paper. Moreover, a design method to take the mean stress effect into account was proposed by the authors in previous work. However, the proposed design method was calibrated using limited traffic measurements in Sweden, and as such, may not be representative of the Swedish or European traffic. In this paper, larger data pools consisting of more than 873,000 and 446,000 lorries from Sweden and the Netherlands, respectively, were used to examine the validity of the previous calibration in both countries. The comparison revealed no significant difference between the data pools with regards to the mean stress effect. Additionally, the previous calibration provided the most conservative mean stress effect and was considered adequately representative for both countries. The proposed design method was further validated using four composite case study bridges. It was also found that the mean stress effect was mainly influenced by the self-weight, while variation in the mean stress due to traffic had a minor influence on the total mean stress effect. Furthermore, it was found that the mean stress effect could not be accurately or conservatively predicted using FLM3 or FLM4.
|
|
| 4. |
- al-Karawi, Hassan, 1993, et al.
(författare)
-
Mean stress effect in high-frequency mechanical impact (HFMI)-treated welded steel railway bridges
- 2024
-
Ingår i: Steel Construction. - 1867-0520 .- 1867-0539. ; 17:2, s. 81-92
-
Tidskriftsartikel (refereegranskat)abstract
- The need for new railway bridges is driven by the growing volume of transportation demands for both passenger and freight traffic on railway networks. In the design of these bridges, the fatigue limit state is a criterion that usually limits the allowable applied load level and thus also the utilization of the high strength of the steel material. Therefore, improving the fatigue performance of welded details by high-frequency mechanical impact (HFMI) treatment leads to a more efficient design. However, the fatigue performance of HFMI-treated welds is known to be affected by the mean stress and this needs to be considered in the design of treated welded details in steel bridges. This is rather straightforward if the bridge is subjected to cycles from one type of train but becomes cumbersome when several different sets of trains (e. g. axle loads, axle distances) cross the bridge. In this article, a factor to take the mean stress effect (including self-weight and traffic load variations) into account is derived from traffic data measured in Sweden. Moreover, the mean stress effect is also predicted using the different fatigue load models in the Eurocode. These models either consist of one-load patterns such as LM71, SW/0, and SW/2 or are composed of different trains with different combinations. It was found that the mean stress effect is underestimated by the first group of models. On the other hand, the mean stress predicted by the light traffic mix is found to be close to that calculated using real traffic data, while other mixes (standard and heavy) underestimate the mean stress effect. Therefore, a correction factor to account for the mean stress effects in real traffic is derived (called here λHFMI). This factor can be used to correct the design stress range for fatigue verification of HFMI-treated welded details in railway bridges.
|
|
| 5. |
- Dewi, Fatwa Sari Tetra, et al.
(författare)
-
An increase in risk factors for cardiovascular disease in Yogyakarta, Indonesia : a comparison of two cross-sectional surveys
- 2015
-
Ingår i: Southeast Asian Journal of Tropical Medicine and Public Health. - : Southeast Asian Ministers of Education Organization. - 0125-1562. ; 46:4, s. 775-785
-
Tidskriftsartikel (refereegranskat)abstract
- This paper aims to describe changes in risk factors for cardiovascular disease (CVD) over a five year period in urban Indonesia. In 2004 (n=3,205) and 2009 (n=2,467) we conducted cross-sectional surveys of residents in Yogjakarta City, Indonesia evaluating risk factors for CVD. Smoking habits, fruit and vegetable intake, physical activity, blood pressure, weight, and height were recorded. The results of these 2 surveys conducted 5 years apart were then compared. The risk for having a CVD event was also calculated. Behavioral CVD risk factors were more common among men. The predicted risk of having a CVD event increased from 8.4% to 11.3% among men between 2004 and 2009. Effective measures need to be taken to change these behaviors among men in Yogyakarta, Indonesia.
|
|
| 6. |
- Dewi, Fatwa S. T., et al.
(författare)
-
Designing and collecting data for a longitudinal study : the Sleman Health and Demographic Surveillance System (HDSS)
- 2018
-
Ingår i: Scandinavian Journal of Public Health. - : Sage Publications. - 1403-4948 .- 1651-1905. ; 46:7, s. 704-710
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: This paper describes the methodological considerations of developing an urban Health and Demographic Surveillance System (HDSS), in the Sleman District of Yogyakarta, Indonesia.METHODS: 1) The Sleman District was selected because it is mostly an urban area. 2) The minimum sample size was calculated to measure infant mortality as the key variable and resulted in a sample of 4942 households. A two-stage cluster sampling procedure with probability proportionate to size was applied; first, 216 Censuses Blocks (CBs) were selected, and second, 25 households in each CB were selected. 3) A baseline survey was started in 2015, and collected data on demographic and economic characteristics and verbal autopsy (VA); the 2nd cycle collected updated demographic data, VA, type of morbidity (communicable and non-communicable diseases, disability and injury) and health access. 4) The data were collected at a home visit through a Computer-Assisted Personal Interview (CAPI) on a tablet device, and the data were transferred to the server through the Internet. 5) The quality control consisted of spot-checks of 5% of interviews to control for adherence to the protocol, re-checks to ensure the validity of the interview, and computer-based data cleaning. 6) A utilization system was designed for policy-makers (government) and researchers.RESULTS: In total, 5147 households participated in the baseline assessment in 2015, and 4996 households participated in the second cycle in 2016 (97.0% response rate).CONCLUSIONS: Development of an urban HDSS is possible and is beneficial in providing data complementary to the existing demographic and health information system at local, national and global levels.
|
|
| 7. |
- Dewi, Fatwa Sari Tetra, et al.
(författare)
-
Mobilising a disadvantaged community for a cardiovascular intervention : designing PRORIVA in Yogyakarta, Indonesia
- 2010
-
Ingår i: Global Health Action. - : CoAction Publishing. - 1654-9716 .- 1654-9880. ; 3, s. 4661-
-
Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: Cardiovascular disease (CVD) is a burden for developing countries, yet few CVD intervention studies have been conducted in developing countries such as Indonesia. This paper outlines the process of designing a community intervention programme to reduce CVD risk factors, and discusses experiences with regard to design issues for a small-scale intervention.DESIGN PROCESS: THE DESIGN PROCESS FOR THE PRESENT COMMUNITY INTERVENTION CONSISTED OF SIX STAGES: (1) a baseline risk factor survey, (2) design of a small-scale intervention by using both baseline survey and qualitative data, (3) implementation of the small-scale intervention, (4) evaluation of the small-scale intervention and design of a broader CVD intervention in the Yogyakarta municipality, (5) implementation of the broader intervention and (6) evaluation of the broader CVD intervention. According to the baseline survey, 60% of the men were smokers, more than 30% of the population had insufficient fruit and vegetable intake and more than 30% of the population were physically inactive, this is why a small-scale population intervention approach was chosen, guided both by the findings in the quantitative and the qualitative study.EXPERIENCES: A quasi-experimental study was designed with a control group and pre- and post-testing. In the small-scale intervention, two sub-districts were selected and randomly assigned as intervention and control areas. Within them, six intervention settings (two sub-villages, two schools and two workplaces) and three control settings (a sub-village, a school and a workplace) were selected. Health promotion activities targeting the whole community were implemented in the intervention area. During the evaluation, more activities were performed in the low socioeconomic status sub-village and at the civil workplace.
|
|
| 8. |
- Hakimi, Mohammad, et al.
(författare)
-
Is self-rated health an independent index for mortality among older people in Indonesia?
- 2012
-
Ingår i: PloS one. - San Francisco : Public Library of Science (PLoS). - 1932-6203. ; 7:4
-
Tidskriftsartikel (refereegranskat)abstract
- Empirical studies on the association between self-rated health (SRH) and subsequent mortality are generally lacking in low- and middle-income countries. The evidence on whether socio-economic status and education modify this association is inconsistent. This study aims to fill these gaps using longitudinal data from a Health and Demographic Surveillance System (HDSS) site in Indonesia.In 2010, we assessed the mortality status of 11,753 men and women aged 50+ who lived in Purworejo HDSS and participated in the INDEPTH WHO SAGE baseline in 2007. Information on self-rated health, socio-demographic indicators, disability and chronic disease were collected through face-to-face interview at baseline. We used Cox-proportional hazards regression for mortality and included all variables measured at baseline, including interaction terms between SRH and both education and socio-economic status (SES).During an average of 36 months follow-up, 11% of men and 9.5% of women died, resulting in death rates of 3.1 and 2.6 per 1,000 person-months, respectively. The age-adjusted Hazard Ratio (HR) for mortality was 17% higher in men than women (HR=1.17; 95% CI=1.04-1.31). After adjustment for covariates, the hazard ratios for mortality in men and women reporting bad health were 3.0 (95% CI=2.0-4.4) and 4.9 (95% CI=3.2-7.4), respectively. Education and SES did not modify this association for either sex.This study supports the predictive power of bad self-rated health for subsequent mortality in rural Indonesian men and women 50 years old and over. In these analyses, education and household socio-economic status do not modify the relationship between SRH and mortality. This means that older people who rate their own health poorly should be an important target group for health service interventions.
|
|
| 9. |
- Haksari, Ekawaty L., et al.
(författare)
-
Reference curves of birth weight, length, and head circumference for gestational ages in Yogyakarta, Indonesia
- 2016
-
Ingår i: BMC Pediatrics. - : Springer Science and Business Media LLC. - 1471-2431. ; 16
-
Tidskriftsartikel (refereegranskat)abstract
- Background: The birth weight reference curve to estimate the newborns at risk in need of assessment and monitoring has been established. The previous reference curves from Indonesia, approximately 8 years ago, were based on the data collected from teaching hospitals only with limited gestational ages. The aims of the study were to update the reference curves for birth weight, supine length and head circumference for Indonesia, and to compare birth weight curves of boys and girls, first child and later children, and the ones in the previous studies. Methods: Data were extracted from the Maternal-Perinatal database between 1998-2007. Only live singletons with recorded gestational ages of 26 to 42 weeks and the exact time of admission to the neonatal facilities delivered or referred within 24 h of age to Sardjito Hospital, five district hospitals and five health centers in Yogyakarta Special Territory were included. Newborns with severely ill conditions, congenital anomaly and chromosomal abnormality were excluded. Smoothening of the curves was accomplished using a third-order polynomial equation. Results: Our study included 54,599 singleton live births. Growth curves were constructed for boys (53.3%) and girls (46.7%) for birth weight, supine length, and head circumference. At term, mean birth weight for each gestational age of boys was significantly higher than that of girls. While mean birth weight for each gestational age of first-born-children, on the other hand was significantly lower than that of later-born-children. The mean birth weight was lower than that of Lubchenco's study. Compared with the previous Indonesian study by Alisyahbana, no differences were observed for the aterm infants, but lower mean birth weight was observed in preterm infants. Conclusions: Updated neonatal reference curves for birth weight, supine length and head circumference are important to classify high risk newborns in specific area and to identify newborns requiring attention.
|
|
| 10. |
- Hayati, Elli N, et al.
(författare)
-
Behind the silence of harmony : risk factors for physical and sexual violence among women in rural Indonesia.
- 2011
-
Ingår i: BMC Women's Health. - : Springer Science and Business Media LLC. - 1472-6874. ; 11, s. 52-
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Indonesia has the fourth largest population in the world. Few studies have identified the risk factors of Indonesian women for domestic violence. Such research will be useful for the development of prevention programs aiming at reducing domestic violence. Our study examines associations between physical and sexual violence among rural Javanese Indonesian women and sociodemographic factors, husband's psychosocial and behavioral characteristics and attitudes toward violence and gender roles.METHODS: A cohort of pregnant women within the Demographic Surveillance Site (DSS) in Purworejo district, Central Java, Indonesia, was enrolled in a longitudinal study between 1996 and 1998. In the following year (1999), a cross-sectional domestic violence household survey was conducted with 765 consenting women from that cohort. Female field workers, trained using the WHO Multi-Country study instrument on domestic violence, conducted interviews. Crude and adjusted odds ratios at 95% CI were applied for analysis.RESULTS: Lifetime exposure to sexual and physical violence was 22% and 11%. Sexual violence was associated with husbands' demographic characteristics (less than 35 years and educated less than 9 years) and women's economic independence. Exposure to physical violence among a small group of women (2-6%) was strongly associated with husbands' personal characteristics; being unfaithful, using alcohol, fighting with other men and having witnessed domestic violence as a child. The attitudes and norms expressed by the women confirm that unequal gender relationships are more common among women living in the highlands and being married to poorly educated men. Slightly more than half of the women (59%) considered it justifiable to refuse coercive sex. This attitude was also more common among financially independent women (71%), who also had a higher risk of exposure to sexual violence.CONCLUSIONS: Women who did not support the right of women to refuse sex were more likely to experience physical violence, while those who justified hitting for some reasons were more likely to experience sexual violence. Our study suggests that Javanese women live in a high degree of gender-based subordination within marriage relationships, maintained and reinforced through physical and sexual violence. Our findings indicate that women's risk of physical and sexual violence is related to traditional gender norms.
|
|
| 11. |
- Hayati, Elli Nur, 1966-
(författare)
-
Domestic violence against women in rural Indonesia : searching for multilevel prevention
- 2013
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Domestic violence has been recognized globally as one of the most important Public Health concerns with severe negative health consequences for the exposed women. Through UN bodies several international milestones have successfully pushed attention towards worldwide improvements in the life situations of women. Since the ratification of the Convention on Elimination of All Forms of Discrimination against Women (CEDAW) in 1984, significant positive changes towards equality between men and women in Indonesia have been initiated, one being the enactment of the Domestic Violence Act in 2004. However, there is still a need to improve the knowledge about what preventive measures that are feasible and work in different settings. This thesis aims to contribute to a better understanding of appropriate prevention strategies against domestic violence in rural Indonesia by exploring: i) risk factors for domestic violence; ii) women’s ways of coping with exposure to violence; iii) men’s views on masculinity and violence within marriage; and iv) challenges faced by local service agency in managing services for women survivors of domestic violence.Methods: Data from a cross sectional population based study was used to analyze risk factors for physical and sexual abuse among a cohort of pregnant women in Purworejo district. Further, a qualitative phenomenological interview study was conducted to reveal the dynamics of coping among women survivors of domestic violence in the same district. A Grounded Theory study based on focus group discussions with men formed the basis for a situational analysis of the linkage between masculinity and the use of violence within marriage. Finally, a qualitative case study was performed to explore the management practices of a local service agency in the district, to understand the challenges faced in their efforts to address domestic violence.Results: Sexual violence was associated with husbands’ demographic characteristics (age and low educated) and women’s economic independence. Exposure to physical violence among women was strongly associated with husbands’ personal characteristics. The attitudes and norms expressed by women confirmed unequal gender relationships. Experiencing violence led women to using an elastic band coping strategy, moving between actively opposing the violence and surrendering or tolerating the situation. The national gender equality policies were shown to have played a crucial role in transforming gender power relations among men and women (the gender order) in the Indonesian society. Three different positions of masculinity were identified, the traditionalist, the egalitarian, and the progressive, with different beliefs about men’s role within marriage and with various levels of accepting the use of violence. Long term structural preventive efforts and individual interventions targeted to the conflicting couples were preferred over reporting the abuser to the authorities. The major challenges faced by the local service agency were the low priority given by the authorities, mirrored also in low involvement in the daily service by the assigned volunteers. The local agency also stammered in translating the current law and policies into a society that held on to traditional and religious norms regulating the relationships between men and women.Conclusion: Overall, this thesis illustrates that sociocultural traditions and religious teaching still viscously influence people’s attitudes and beliefs about the use of violence within relationships. Domestic violence has not been accepted as a criminal act but is still to a large extent seen as a private family affair. Culturally sensitive programs aimed to bridging the gap between the current laws and policies and the socio-cultural traditions need to be further developed to protect women from domestic violence and increase gender equity in the Indonesian setting.
|
|
| 12. |
- Hayati, Elli Nur, et al.
(författare)
-
'Elastic band strategy' : women's lived experiences of coping with domestic violence in rural Indonesia
- 2013
-
Ingår i: Global Health Action. - : Informa UK Limited. - 1654-9716 .- 1654-9880. ; 6, s. 1-12
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Experiencing domestic violence is considered a chronic and stressful life event. A theoretical framework of coping strategies can be used to understand how women deal with domestic violence. Traditional values strongly influenced by religious teachings that interpret men as the leaders of women play an important role in the lives of Javanese women, where women are obliged to obey their husbands. Little is known about how sociocultural and psychosocial contexts influence the ways in which women cope with domestic violence. Objective: Our study aimed to deepen our understanding of how rural Javanese women cope with domestic violence. Our objective was to explore how the sociocultural context influences coping dynamics of women survivors of domestic violence in rural Purworejo. Design: A phenomenological approach was used to transform lived experiences into textual expressions of the coping dynamics of women survivors of domestic violence. Results: Experiencing chronic violence ruined the women's personal lives because of the associated physical, mental, psychosocial, and financial impairments. These chronic stressors led women to access external and internal resources to form coping strategies. Both external and internal factors prompted conflicting impulses to seek support, that is, to escape versus remain in the relationship. This strong tension led to a coping strategy that implied a long-term process of moving between actively opposing the violence and surrendering or tolerating the situation, resembling an elastic band that stretches in and out. Conclusions: Women survivors in Purworejo face a lack of institutional support and tend to have traditional beliefs that hamper their potential to stop the abuse. Although the women in this study were educated and economically independent, they still had difficulty mobilizing internal and external support to end the abuse, partly due to internalized gender norms.
|
|
| 13. |
- Kowal, Paul, et al.
(författare)
-
Ageing and adult health status in eight lower-income countries : the INDEPTH WHO-SAGE collaboration
- 2010
-
Ingår i: Global Health Action. - : CoAction Publishing. - 1654-9716 .- 1654-9880. ; 3:Supplement 2, s. 11-22
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Globally, ageing impacts all countries, with a majority of older persons residing in lower- and middle-income countries now and into the future. An understanding of the health and well-being of these ageing populations is important for policy and planning; however, research on ageing and adult health that informs policy predominantly comes from higher-income countries. A collaboration between the WHO Study on global AGEing and adult health (SAGE) and International Network for the Demographic Evaluation of Populations and Their Health in developing countries (INDEPTH), with support from the US National Institute on Aging (NIA) and the Swedish Council for Working Life and Social Research (FAS), has resulted in valuable health, disability and well-being information through a first wave of data collection in 2006-2007 from field sites in South Africa, Tanzania, Kenya, Ghana, Viet Nam, Bangladesh, Indonesia and India.Objective: To provide an overview of the demographic and health characteristics of participating countries, describe the research collaboration and introduce the first dataset and outputs. Methods: Data from two SAGE survey modules implemented in eight Health and Demographic Surveillance Systems (HDSS) were merged with core HDSS data to produce a summary dataset for the site-specific and cross-site analyses described in this supplement. Each participating HDSS site used standardised training materials and survey instruments. Face-to-face interviews were conducted. Ethical clearance was obtained from WHO and the local ethical authority for each participating HDSS site.Results: People aged 50 years and over in the eight participating countries represent over 15% of the current global older population, and is projected to reach 23% by 2030. The Asian HDSS sites have a larger proportion of burden of disease from non-communicable diseases and injuries relative to their African counterparts. A pooled sample of over 46,000 persons aged 50 and over from these eight HDSS sites was produced. The SAGE modules resulted in self-reported health, health status, functioning (from the WHO Disability Assessment Scale (WHODAS-II)) and well-being (from the WHO Quality of Life instrument (WHOQoL) variables). The HDSS databases contributed age, sex, marital status, education, socio-economic status and household size variables.Conclusion: The INDEPTH WHO-SAGE collaboration demonstrates the value and future possibilities for this type of research in informing policy and planning for a number of countries. This INDEPTH WHO- SAGE dataset will be placed in the public domain together with this open-access supplement and will be available through the GHA website (www.globalhealthaction.net) and other repositories. An improved dataset is being developed containing supplementary HDSS variables and vignette-adjusted health variables. This living collaboration is now preparing for a next wave of data collection.
|
|
| 14. |
- Lind, Lars, et al.
(författare)
-
Heterogeneous contributions of change in population distribution of body mass index to change in obesity and underweight NCD Risk Factor Collaboration (NCD-RisC)
- 2021
-
Ingår i: eLife. - : eLife Sciences Publications Ltd. - 2050-084X. ; 10
-
Tidskriftsartikel (refereegranskat)abstract
- From 1985 to 2016, the prevalence of underweight decreased, and that of obesity and severe obesity increased, in most regions, with significant variation in the magnitude of these changes across regions. We investigated how much change in mean body mass index (BMI) explains changes in the prevalence of underweight, obesity, and severe obesity in different regions using data from 2896 population-based studies with 187 million participants. Changes in the prevalence of underweight and total obesity, and to a lesser extent severe obesity, are largely driven by shifts in the distribution of BMI, with smaller contributions from changes in the shape of the distribution. In East and Southeast Asia and sub-Saharan Africa, the underweight tail of the BMI distribution was left behind as the distribution shifted. There is a need for policies that address all forms of malnutrition by making healthy foods accessible and affordable, while restricting unhealthy foods through fiscal and regulatory restrictions.
|
|
| 15. |
- Minh, Hoang Van, et al.
(författare)
-
Smoking epidemics and socio-economic predictors of regular use and cessation : Findings from WHO STEPS risk factor surveys in Vietnam and Indonesia
- 2006
-
Ingår i: Internet Journal of Epidemiology. - 1540-2614. ; 3:1
-
Tidskriftsartikel (refereegranskat)abstract
- A population-based surveys were carried out in two demographic surveillance sites (DSSs) in Vietnam and Indonesia using the WHO STEPS approach to surveillance of non-communicable disease risk factors in order to characterize smoking epidemics in rural communities of Vietnam and Indonesia by identifying associations between socio-economic status and changes in smoking status among adult populations. The paper reveals that the prevalence of smoking among people aged 25-54 years was higher in Indonesia than in Vietnam. Indonesian men started smoking regularly earlier and ceased less than Vietnamese men. While low income was found to be a significant predictor of becoming regular smokers in Vietnam, old birth cohort and low education significantly increased the probability of being a regular smoker in Indonesia. Economic status was also found to be a significant predictor of smoking cessation in Vietnam while education and occupation played an important role in Indonesia
|
|
| 16. |
- Mishra, A, et al.
(författare)
-
Diminishing benefits of urban living for children and adolescents' growth and development
- 2023
-
Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 615:7954, s. 874-883
-
Tidskriftsartikel (refereegranskat)abstract
- Optimal growth and development in childhood and adolescence is crucial for lifelong health and well-being1–6. Here we used data from 2,325 population-based studies, with measurements of height and weight from 71 million participants, to report the height and body-mass index (BMI) of children and adolescents aged 5–19 years on the basis of rural and urban place of residence in 200 countries and territories from 1990 to 2020. In 1990, children and adolescents residing in cities were taller than their rural counterparts in all but a few high-income countries. By 2020, the urban height advantage became smaller in most countries, and in many high-income western countries it reversed into a small urban-based disadvantage. The exception was for boys in most countries in sub-Saharan Africa and in some countries in Oceania, south Asia and the region of central Asia, Middle East and north Africa. In these countries, successive cohorts of boys from rural places either did not gain height or possibly became shorter, and hence fell further behind their urban peers. The difference between the age-standardized mean BMI of children in urban and rural areas was <1.1 kg m–2 in the vast majority of countries. Within this small range, BMI increased slightly more in cities than in rural areas, except in south Asia, sub-Saharan Africa and some countries in central and eastern Europe. Our results show that in much of the world, the growth and developmental advantages of living in cities have diminished in the twenty-first century, whereas in much of sub-Saharan Africa they have amplified.
|
|
| 17. |
- Ng, Nawi, 1974-
(författare)
-
Chronic disease risk factors in a transitional country : the case of rural Indonesia
- 2006
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: The epidemic of chronic diseases is largely neglected. Although a threatening burden of chronic diseases is emerging, developing public health efforts for their prevention and control is not yet a priority for trans-national and national health policy makers. Understanding the population burden of risk factors which predict chronic diseases is an important step in reducing the impact of the diseases themselves. Objective: This thesis responds to the increasing burden of chronic diseases worldwide, and aims to illustrate the gap in chronic disease risk factor research in developing countries. The thesis describes and analyses the distribution of chronic disease risk factors in a rural setting in Indonesia. It also describes how smoking, one of the most common risk factors, is viewed by rural Javanese boys. Ultimately, therefore, this thesis aims to contribute to policy and programme recommendations for community interventions in a rural setting in Indonesia Methods: The studies were conducted in Purworejo District, where a Demographic Surveillance System (DSS) has been running since 1994. The Purworejo DSS is part of the INDEPTH network (International Network of field sites for continuous Demographic Evaluation of Populations and Their Health in developing countries). Two representative cross-sectional studies (in 2001 and 2005) were conducted to assess the chronic disease risk factors (including smoking, elevated blood pressure, and overweight and obesity). The first cross-sectional study was followed up in 2002 and 2004. In each study, a total of 3 250 participants (approximately 250 individuals in each sex and age group among 15–74 year olds stratified into 10-year intervals) were randomly selected from the surveillance database from each enumeration area in the surveillance area. Instruments were adopted from the WHO STEPS survey and adapted to local setting. Since many Indonesians start to smoke at an earlier age, a qualitative study using a focus group discussion approach was conducted among school boys aged 13-17 years old to describe and explore beliefs, norms, and values about smoking in a rural setting in Java. Result: Both the rural and urban populations in Purworejo face an unequal distribution of risk factors for chronic diseases. The burden among the most well-off group in the rural area has already reached a level similar to that found in the urban area. Most of the risk factors increased in all age, sex and socioeconomic groups during the period of 2001 to 2005. However, women and the poorest group experienced the greatest increase in risk factor prevalence. The qualitative study showed that cultural resistance against women smoking in Indonesia remains strong. Smoking is being viewed as a culturally internalised habit that signifies transition into maturity and adulthood for boys. Smoking is utilised as a means for socialisation and signifies better socioeconomic status. The use of tobacco in the construction of masculinity underlines the importance of gender specific interventions. National tobacco control policy should emphasise a smoking free society as the norm, especially among boys and men, and regulations regarding the banning of smoking should be enforced at all levels and areas of the community. Within the demographic surveillance setting, it is possible to assess the population and health dynamics. Utilisation of a standardised methodology across sites in INDEPTH will produce comparable population-based data in developing countries. Such comparisons are important in global health. A comparison of smoking transition patterns between a Vietnamese DSS and an Indonesian DSS shows that Indonesian men started smoking regularly earlier and ceased less than Vietnamese men. Compared with Vietnam, which has already signed and ratified the Framework Convention on Tobacco Control, tobacco control activities in Indonesia are still deficient. Conclusion: The thesis concludes that the rural population is not spared from the emerging burden of chronic disease risk factors. The patterning of risks across different socioeconomic groups provides a macro picture of the vicious cycle between poverty and chronic diseases. Understanding of risk factors in a local context through a qualitative study provides insight into cultural aspects relating to risk factor adoption, and will allow the fostering and tailoring of culturally appropriate interventions. Combining data from demographic surveillance sites with the WHO STEP approach to chronic disease risk factor Surveillance addresses basic epidemiological questions on chronic diseases. The use of such data is a powerful advocacy tool in public health decision-making for chronic disease prevention in developing countries. With substantial existing evidence on the effectiveness of chronic disease prevention and intervention programmes, it is vital that Indonesia to starts planning intervention programmes to control the impending chronic disease epidemic, and most importantly, to translate all this evidence into public health action. Keywords: chronic disease, risk factor, demographic surveillance system, smoking, elevated blood pressure, overweight and obesity, population-based intervention
|
|
| 18. |
- Ng, Nawi, et al.
(författare)
-
Health and quality of life among older rural people in Purworejo District, Indonesia
- 2010
-
Ingår i: Global Health Action. - : CoAction Publishing. - 1654-9716 .- 1654-9880. ; 3:Supplement 2, s. 78-87
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction: Increasing life expectancy and longevity for people in many highly populated low- and middleincome countries has led to an increase in the number of older people. The population aged 60 years and over in Indonesia is projected to increase from 8.4% in 2005 to 25% in 2050. Understanding the determinants of healthy ageing is essential in targeting health-promotion programmes for older people in Indonesia. Objective: To describe patterns of socio-economic and demographic factors associated with health status, and to identify any spatial clustering of poor health among older people in Indonesia. Methods: In 2007, the WHO Study on global AGEing and adult health (SAGE) was conducted among 14,958 people aged 50 years and over in Purworejo District, Central Java, Indonesia. Three outcome measures were used in this analysis: self-reported quality of life (QoL), self-reported functioning and disability, and overall health score calculated from self-reported health over eight health domains. The factors associated with each health outcome were identified using multivariable logistic regression. Purely spatial analysis using Poisson regression was conducted to identify clusters of households with poor health outcomes. Results: Women, older age groups, people not in any marital relationship and low educational and socioeconomic levels were associated with poor health outcomes, regardless of the health indices used. Older people with low educational and socio-economic status (SES) had 3.4 times higher odds of being in the worst QoL quintile (OR=3.35; 95% CI=2.73-4.11) as compared to people with high education and high SES. This disadvantaged group also had higher odds of being in the worst functioning and most disabled quintile (OR=1.67; 95% CI=1.35-2.06) and the lowest overall health score quintile (OR=1.66; 95% CI=1.36-2.03). Poor health and QoL are not randomly distributed among the population over 50 years old in Purworejo District, Indonesia. Spatial analysis showed that clusters of households with at least one member being in the worst quintiles of QoL, functioning and health score intersected in the central part of Purworejo District, which is a semi-urban area with more developed economic activities compared with other areas in the district. Conclusion: Being female, old, unmarried and having low educational and socio-economic levels were significantly associated with poor self-reported QoL, health status and disability among older people in Purworejo District. This study showed the existence of geographical pockets of vulnerable older people in Purworejo District, and emphasized the need to take immediate action to address issues of older people’s health and QoL.
|
|
| 19. |
- Ng, Nawi, et al.
(författare)
-
Health inequalities among older men and women in Africa and Asia : evidence from eight Health and Demographic Surveillance System sites in the INDEPTH WHO-SAGE Study
- 2010
-
Ingår i: Global Health Action. - : CoAction Publishing. - 1654-9716 .- 1654-9880. ; 3:Supplement 2, s. 96-107
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Declining rates of fertility and mortality are driving demographic transition in all regions of the world, leading to global population ageing and consequently changing patterns of global morbidity and mortality. Understanding sex-related health differences, recognising groups at risk of poor health and identifying determinants of poor health are therefore very important for both improving health trajectories and planning for the health needs of ageing populations.Objectives: To determine the extent to which demographic and socio-economic factors impact upon measures of health in older populations in Africa and Asia; to examine sex differences in health and further explain how these differences can be attributed to demographic and socio-economic determinants.Methods: A total of 46,269 individuals aged 50 years and over in eight Health and Demographic Surveillance System (HDSS) sites within the INDEPTH Network were studied during 2006-2007 using an abbreviated version of the WHO Study on global AGEing and adult health (SAGE) Wave I instrument The survey data were then linked to longitudinal HDSS background information. A health score was calculated based on self-reported health derived from eight health domains. Multivariable regression and post-regression decomposition provide ways of measuring and explaining the health score gap between men and women.Results: Older men have better self-reported health than older women. Differences in household socioeconomic levels, age, education levels, marital status and living arrangements explained from about 82% and 71% of the gaps in health score observed between men and women in South Africa and Kenya, respectively, to almost nothing in Bangladesh. Different health domains contributed differently to the overall health scores for men and women in each country.Conclusion: This study confirmed the existence of sex differences in self-reported health in low- and middleincome countries even after adjustments for differences in demographic and socio-economic factors. A decomposition analysis suggested that sex differences in health differed across the HDSS sites, with the greatest level of inequality found in Bangladesh. The analysis showed considerable variation in how differences in socio-demographic and economic characteristics explained the gaps in self-reported health observed between older men and women in African and Asian settings. The overall health score was a robust indicator of health, with two domains, pain and sleep/energy, contributing consistently across the HDSS sites. Further studies are warranted to understand other significant individual and contextual determinants to which these sex differences in health can be attributed. This will lay a foundation for a more evidence-based approach to resource allocation, and to developing health promotion programmes for older men and women in these settings.
|
|
| 20. |
- Ng, Nawi, et al.
(författare)
-
Prevalence of physical inactivity in nine rural INDEPTH health and demographic surveillance systems in five Asian countries
- 2009
-
Ingår i: Global Health Action. - : Informa UK Limited. - 1654-9716 .- 1654-9880. ; 2:1, s. 44-53
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Physical inactivity leads to higher morbidity and mortality from chronic non-communicable diseases (NCDs) such as stroke and heart disease. In high income countries, studies have measured the population level of physical activity, but comparable data are lacking from most low and middle-income countries.OBJECTIVE: To assess the level of physical inactivity and its associated factors in selected rural sites in five Asian countries. METHODS: The multi-site cross-sectional study was conducted in nine rural Health and Demographic Surveillance System (HDSS) sites within the INDEPTH Network in Bangladesh, India, Indonesia, Thailand, and Vietnam. Using the methodology from the WHO STEPwise approach to Surveillance (STEPS), about 2,000 men and women aged 25-64 years were selected randomly from each HDSS sampling frame. Physical activity at work and during leisure time, and on travel to and from places, was measured using the Global Physical Activity Questionnaire version 2 (GPAQ2). The total activity was calculated as the sum of the time spent in each domain of activities in metabolic equivalent-minutes per week, and was used to determine the level of physical activity. Multivariable logistic regression was used to assess demographic factors associated with a low level of physical activity.RESULTS: The prevalence of physical inactivity ranged from 13% in Chililab HDSS in Vietnam to 58% in Filabavi HDSS in Vietnam. The majority of men were physically active, except in the two sites in Vietnam. Most of the respondents walked or cycled for at least 10 minutes to get from place to place, with some exceptions in the HDSSs in Indonesia and Thailand. The majority of respondents, both men and women, were inactive during their leisure time. Women, older age, and high level of education were significantly associated with physical inactivity.CONCLUSION: This study showed that over 1/4 men and 1/3 women in Asian HDSSs within the INDEPTH Network are physically inactive. The wide fluctuations between the two HDSS in Vietnam offer an opportunity to explore further urbanisation and environmental impacts on physical activity. Considering the importance of physical activity in improving health and preventing chronic NCDs, efforts need to be made to promote physical activity particularly among women, older people, and high education groups in these settings.
|
|
| 21. |
|
|
| 22. |
|
|
| 23. |
- Pujilestari, Cahya Utamie, 1982-
(författare)
-
Abdominal obesity among older population in Indonesia : socioeconomic and gender inequality, pattern and impacts on disability and death
- 2018
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Population ageing has contributed to the rise of chronic non-communicable diseases (NCDs). Concurrently, obesity prevalence is increasing in all age groups and has become a serious public health problem. Obesity is the main risk factors of the major chronic NCDs such as type 2 diabetes and has been linked to disability and mortality. Studies of socioeconomic inequalities in obesity among older people in Indonesia are scarce. Understanding socioeconomic inequalities are essential to develop appropriate health programme to improve the population health. This thesis describes the pattern of socioeconomic and gender inequality in abdominal obesity and analyses its impact on disability and all-cause mortality among older people in Indonesia.Methods: This thesis is based on four studies conducted in Purworejo Health and Demographic Surveillance System (HDSS) site in Purworejo district, Central Java, Indonesia. This thesis uses both quantitative and qualitative methods. The qualitative study (sub-study 1) was based on 12 Focus Group Discussions (FGDs) with 68 participants from different age groups, sex, and living area. Content analysis was used to describe the community perceptions on diabetes and its risk factors. The quantitative studies (sub-study 2 to 4) utilized longitudinal panel data from the 1st (n = 11,753 individuals) and 2nd wave (n = 14,235 individuals) of the WHO-INDEPTH Study on global AGEing and adult health (SAGE) conducted among all individuals aged 50 years and older in 2007 and 2010. Sub-study 2 used concentration index and decomposition analysis to analyse the pattern of socioeconomic and gender inequality in abdominal obesity. Sub-study 3 used linear regression to examine the association between abdominal obesity and disability. Sub-study 4 used Cox regression analysis with restricted cubic splines to examine the impact of abdominal obesity on all-cause mortality.Results: The FGDs reveals that the community holds unrealistic optimism in perceiving diabetes its risk factors. The community stated that chronic NCD such as diabetes is caused by modern lifestyles and mostly attacks those who are considered as the wealthy (sub-study 1). Socioeconomic inequality in abdominal obesity exists in Purworejo HDSS. Abdominal obesity was more prevalent among the affluent men and women, with a lesser inequality gaps between rich and poor among women. The main contributing factors to inequalities in abdominal obesity were occupation, wealth index, and education (sub-study 2). In three-year period, the mean waist circumference decreased significantly among the poor. An increase in waist circumference was significantly associated with disability, and the poor people were more disabled compared to the rich (sub-study 3). A U-shaped association was observed between waist circumference and all-cause mortality, particularly among women. This indicated an increased risk of mortality in the lower and upper end of the waist circumference distribution. The poor with low waist circumference had a higher risk of mortality than the rich (sub-study 4).Conclusion: Abdominal obesity was disproportionately more prevalent among older Indonesian women. Though the wealthy people have higher burden of abdominal obesity, the poor people experiences more disability and higher risk of death. Misperception on chronic NCDs and its risk factors exist among the Indonesian population. Abdominal obesity prevention strategies are needed to prevent chronic NCDs, disabilities, and mortality among Indonesian older population. The prevention strategies should be culturally sensitive and address all socioeconomic levels. Special attention should be given to disadvantaged women as the most vulnerable group.
|
|
| 24. |
- Pujilestari, Cahya Utamie, et al.
(författare)
-
"It is not possible for me to have diabetes" : Community Perceptions on Diabetes and Its Risk Factors in Rural Purworejo District, Central Java, Indonesia
- 2014
-
Ingår i: Global Journal of Health Science. - : Canadian Center of Science and Education. - 1916-9736 .- 1916-9744. ; 6:5, s. 35738-
-
Tidskriftsartikel (refereegranskat)abstract
- Accumulating evidence suggests that negative perceptions towards diabetes can limit the management and prevention of the disease. The negative perceptions towards diabetes are prevalent in many different settings, especially among rural communities. Few qualitative studies have been performed to understand how the community views diabetes and its associated risk factors. This study aimed to explore general community perceptions of diabetes and its risk factors in rural Indonesia. A total of 68 participants were recruited to 12 focus group discussions (FGDs) comprised of different age groups and sexes. The FGDs were conducted in six villages in rural Purworejo District, Central Java, Indonesia, from 2011 to 2012. All FGDs were recorded and transcribed. Qualitative content analysis was performed to describe and analyse how the rural community perceived diabetes and its risk factors. Diabetes was perceived as a visible and scary sugar disease, and the affected individuals themselves were blamed for getting the disease. Recognised as 'sugar' or 'sweet-pee' disease with terrifying effects, diabetes was believed to be a disease with no cure. The participants seemed to have an unrealistic optimism with regards to the diabetes risk factors. They believed that diabetes would not affect them, only others, and that having family members with diabetes was necessary for one to develop diabetes. Our findings demonstrate that rural communities have negative perceptions about diabetes and at the same time individuals have unrealistic optimism about their own risk factors. Understanding how such communities perceive diabetes and its risk factors is important for planning prevention strategies. Health messages need to be tailored to health-related behaviours and the local culture's concepts of diseases and risk factors.
|
|
| 25. |
- Pujilestari, Cahya Utamie, et al.
(författare)
-
Socioeconomic inequality in abdominal obesity among older people in Purworejo District, Central Java, Indonesia : a decomposition analysis approach
- 2017
-
Ingår i: International Journal for Equity in Health. - : Springer Science and Business Media LLC. - 1475-9276. ; 16:1
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Obesity has become a global health challenge as its prevalence has increased globally in recent decades. Studies in high-income countries have shown that obesity is more prevalent among the poor. In contrast, obesity is more prevalent among the rich in low- and middle-income countries, hence requiring different focal points to design public health policies in the latter contexts. We examined socioeconomic inequalities in abdominal obesity in Purworejo District, Central Java, Indonesia and identified factors contributing to the inequalities.METHODS: We utilised data from the WHO-INDEPTH Study on global AGEing and adult health (WHO-INDEPTH SAGE) conducted in the Purworejo Health and Demographic Surveillance System (HDSS) in Purworejo District, Indonesia in 2010. The study included 14,235 individuals aged 50 years and older. Inequalities in abdominal obesity across wealth groups were assessed separately for men and women using concentration indexes. Decomposition analysis was conducted to assess the determinants of socioeconomic inequalities in abdominal obesity.RESULTS: Abdominal obesity was five-fold more prevalent among women than in men (30% vs. 6.1%; p < 0.001). The concentration index (CI) analysis showed that socioeconomic inequalities in abdominal obesity were less prominent among women (CI = 0.26, SE = 0.02, p < 0.001) compared to men (CI = 0.49, SE = 0.04, p < 0.001). Decomposition analysis showed that physical labour was the major determinant of socioeconomic inequalities in abdominal obesity among men, explaining 47% of the inequalities, followed by poor socioeconomic status (31%), ≤ 6 years of education (15%) and current smoking (11%). The three major determinants of socioeconomic inequalities in abdominal obesity among women were poor socio-economic status (48%), physical labour (17%) and no formal education (16%).CONCLUSION: Abdominal obesity was more prevalent among older women in a rural Indonesian setting. Socioeconomic inequality in abdominal obesity exists and concentrates more among the rich population in both sexes. The inequality gap is less prominent among women, indicating a trend towards obesity being more common in poor women. Policies to address social determinants of health need to be developed to address the socioeconomic inequality gaps in obesity, with particular focus on addressing the existing burden of obesity among the better-off population group, while preventing the imminent burden of obesity among the worst-off group, particularly among women.
|
|
| 26. |
|
|
| 27. |
- Sabri, Muhammad Haziq Mohammad, et al.
(författare)
-
Very High Frequency and Microwave Radiation Associated with Initial Breakdown Process in CG Lightning Flashes from Tropical Storms
- 2021
-
Ingår i: 2021 35TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) AND XVI INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (SIPDA). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781665423465
-
Konferensbidrag (refereegranskat)abstract
- We present the observation of VHF and microwave radiation pulses associated with initial breakdown process of five negative cloud-to-ground (-CG) flashes from two tropical storms. The -CG flashes were detected within and beyond reversal distances with the locations of the first return stroke were less than 10 km. Out of five flashes, only one detected with initial electric field change (IEC) process. Both VHF and microwave pulses were detected before the first classic IB pulse and the first microwave pulses were found to lead the first VHF pulses ranging between 0.03 and 23.9 mu s.
|
|
| 28. |
- Santosa, Ailiana, et al.
(författare)
-
Cross-sectional survey of sexual dysfunction and quality of life among older people in Indonesia
- 2011
-
Ingår i: Journal of Sexual Medicine. - : Elsevier. - 1743-6095 .- 1743-6109. ; 8:6, s. 1594-1602
-
Tidskriftsartikel (refereegranskat)abstract
- Introduction. The burden of sexual dysfunction among older people in many low- and middle-income countries is not well known. Understanding sexual dysfunction among older people and its impact on quality of life is essential in the design of appropriate health promotion programs.Aims. To assess levels of sexual function and their association with quality of life while controlling for different sociodemographic determinants and chronic diseases among men and women over 50 years of age in rural Indonesia.Methods. A cross-sectional study was conducted in the Purworejo District, Central Java, Indonesia in 2007. The study involved 14,958 men and women over 50 years old. The association between sexual dysfunction and quality of life after controlling for potential confounders (e.g., sociodemographic determinants and self-reported chronic diseases) was analyzed by multivariable logistic regression.Main Outcome Measures. Self-reported quality of life.Results. Older men more commonly reported sexual activity, and sexual problems were more common among older women. The majority of older men and women reported their quality of life as good. Lack of sexual activity, dissatisfaction in sexual life, and presence of sexual problems were associated with poor self-reported quality of life in older men after adjustment for age, marital status, education, and history of chronic diseases. A presence of sexual problems was the only factor associated with poor self-reported quality of life in women. Being in a marital relationship might buffer the effect of sexual problems on quality of life in men and women.Conclusion. Sexual dysfunction is associated with poor quality of life among older people in a rural Javanese setting. Therefore, promotion of sexual health should be an integral part of physical and mental health campaigns in older populations.
|
|
| 29. |
- Schröders, Julia, et al.
(författare)
-
How is Indonesia coping with its epidemic of chronic noncommunicable diseases? : A systematic review with meta-analysis
- 2017
-
Ingår i: PLOS ONE. - : Public Library Science. - 1932-6203. ; 12:6
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Chronic noncommunicable diseases (NCDs) have emerged as a huge global health problem in low- and middle-income countries. The magnitude of the rise of NCDs is particularly visible in Southeast Asia where limited resources have been used to address this rising epidemic, as in the case of Indonesia. Robust evidence to measure growing NCD-related burdens at national and local levels and to aid national discussion on social determinants of health and intra-country inequalities is needed. The aim of this review is (i) to illustrate the burden of risk factors, morbidity, disability, and mortality related to NCDs; (ii) to identify existing policy and community interventions, including disease prevention and management strategies; and (iii) to investigate how and why an inequitable distribution of this burden can be explained in terms of the social determinants of health.METHODS: Our review followed the PRISMA guidelines for identifying, screening, and checking the eligibility and quality of relevant literature. We systematically searched electronic databases and gray literature for English- and Indonesian-language studies published between Jan 1, 2000 and October 1, 2015. We synthesized included studies in the form of a narrative synthesis and where possible meta-analyzed their data.RESULTS: On the basis of deductive qualitative content analysis, 130 included citations were grouped into seven topic areas: risk factors; morbidity; disability; mortality; disease management; interventions and prevention; and social determinants of health. A quantitative synthesis meta-analyzed a subset of studies related to the risk factors smoking, obesity, and hypertension.CONCLUSIONS: Our findings echo the urgent need to expand routine risk factor surveillance and outcome monitoring and to integrate these into one national health information system. There is a stringent necessity to reorient and enhance health system responses to offer effective, realistic, and affordable ways to prevent and control NCDs through cost-effective interventions and a more structured approach to the delivery of high-quality primary care and equitable prevention and treatment strategies. Research on social determinants of health and policy-relevant research need to be expanded and strengthened to the extent that a reduction of the total NCD burden and inequalities therein should be treated as related and mutually reinforcing priorities.
|
|
| 30. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
Assessment of in-service stresses in steel bridges for high-frequency mechanical impact applications
- 2021
-
Ingår i: Engineering Structures. - : Elsevier BV. - 1873-7323 .- 0141-0296. ; 241
-
Tidskriftsartikel (refereegranskat)abstract
- The application of high-frequency mechanical impact (HFMI) treatment to improve the fatigue performance of composite steel and concrete road bridges was studied through a state-of-the-art review in conjunction with simulations of variable amplitude in-service stresses in four case-study bridges in Sweden. Empirical stress range spectra with associated mean stresses were characterised for HFMI-treated bridges. It was shown that the fatigue-critical locations in HFMI-treated bridges remain unchanged compared with conventional bridges and that compressive overloads pose no detrimental effect that requires additional attention in the fatigue assessment. Calculations also showed a considerably better fatigue performance if HFMI treatment is performed on-site, after the application of self-weight stresses.
|
|
| 31. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
Experimental study of transverse attachment joints with 40 and 60 mm thick main plates, improved by high-frequency mechanical impact treatment (HFMI)
- 2018
-
Ingår i: Engineering structures. - : ELSEVIER SCI LTD. - 0141-0296 .- 1873-7323. ; 155, s. 251-266
-
Tidskriftsartikel (refereegranskat)abstract
- In recent years, high-frequency mechanical impact (HFMI) treatment has grown in popularity due to its efficiency in improving the fatigue strength of welded joints. The fatigue performance of HFMI-treated welded steel joints has, however, not been thoroughly studied for plate thicknesses above 30 mm. In this study, 40 and 60 mm thick main plates with non-load-carrying transverse attachments have been fatigue tested under constant amplitude four-point bending, both in as-welded and HFMI-treated condition to investigate the fatigue performance for large plate thicknesses, typical for weldments in bridges. Axial fatigue strengths were estimated by a modification of the experimental results with fracture mechanics calculations. The main conclusions are that HFMI treatment can result in significant fatigue strength improvement even for large main plate thicknesses and that the difference in fatigue strength between bending and axial loading is negligible for the specimen geometries used in this study.
|
|
| 32. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
Fatigue life improvement of welded bridge details using high frequency mechanical impact (HFMI) treatment
- 2015
-
Ingår i: Heinisuo, M & Mäkinen, J (eds) 2015, The 13th Nordic Steel Construction Conference (NSCC.2015). Tampere University of Technology, Tampere.. ; , s. 201-202
-
Konferensbidrag (refereegranskat)abstract
- Post weld treatment (PWT) techniques are used as measures to enhance the fatigue performance of steel and aluminum structures. These techniques have proven beneficial in various applications such as submarine hulls, offshore wind platforms and cranes. High Fre-quency Mechanical Impact (HFMI) treatment enhance the fatigue life of weldments by reduc-ing the notch stresses, hardening the metal surface and inducing compressive surface residual stresses. This paper gives a short presentation of the HFMI technology and examples of their application in steel bridges. A feasibility assessment and a parametric study on the potential of material saving with PWT on steel bridges is also presented.
|
|
| 33. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
High-cycle variable amplitude fatigue experiments and design framework for bridge welds with high-frequency mechanical impact treatment
- 2022
-
Ingår i: Steel Construction. - : Wiley. - 1867-0520 .- 1867-0539. ; 15
-
Tidskriftsartikel (refereegranskat)abstract
- Fatigue enhancement by way of high-frequency mechanical impact (HFMI) treatment can enable effective design and construction of steel bridges. However, bridges may experience high and varying mean stresses, the effects of which are not covered today by any design recommendation or in the literature on HFMI-treated joints. In this study, fatigue experiments were conducted with realistic in-service bridge loading, which revealed the same high fatigue performance as for constant amplitude loading. The effect of mean stress in spectrum loading was quantified and a method to account for it in an equivalent manner is proposed. A design framework has been developed for design and engineering purposes.
|
|
| 34. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
Post weld treatment - Implementation on bridges with special focus on HFMI
- 2014
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Post weld treatment is a measure of fatigue enhancement of steel and aluminum structures and is today a common procedure in many industries due to the substantial improvements that is gained by it. In the bridge industry, steel and composite bridges have lost competitiveness in recent years due to high requirements on the fatigue design, resulting in more use of material. Although, experiences regarding post weld treatment have not come as far in this industry, studies indicate that large savings with more than 20% material reduction can be achieved for a bridge. This combined with the fact that higher material grades increase fatigue performance after treatment, yields considerable economic advantages and positive effects on the bridges life cycle costs, not to forget the environmental benefits. Herein, examples of nine new and old bridges that have been subjected to post weld treatment are presented, together with international studies regarding fatigue improvement assessment and procedure and quality control recommendations. Furthermore, studies of modeling this technology by finite elements are presented to show the extent of knowledge that exists within this filed, including residual stress simulations, simulations of the post weld treatment and fatigue simulations by different methods. This is of importance for making parameter studies and gain more experience prior to bridge application.
|
|
| 35. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
Size effect on the fatigue of High Frequency Mechanical Impact treated welds
- 2016
-
Ingår i: 19th IABSE Congress Stockholm. - 9783857481444 ; , s. 284-291
-
Konferensbidrag (refereegranskat)abstract
- Fatigue strength improvement of welds by High Frequency Mechanical Impact (HFMI) treatment may enable resource efficient structural design. In civil engineering structures like bridges, plate thicknesses up to 40-50 mm are common. The majority of fatigue test data available on the enhancement of welded details using HFMI treatment are however obtained from relatively thin plates. In this study, an overview of existing fatigue test data with HFMI treatment is presented and evaluated with regard to size effect. A thickness and attachment length dependency of fatigue strength of transverse attachment details was observed and an attachment length dependency for longitudinal attachment details. Based on the gathered data, a fatigue strength-to-thickness relation could not be observed for butt welds and longitudinal attachments.
|
|
| 36. |
- Shams Hakimi, Poja, 1988, et al.
(författare)
-
The thickness effect of welded details improved by high-frequency mechanical impact treatment
- 2017
-
Ingår i: International Journal of Fatigue. - : Elsevier BV. - 0142-1123. ; 99, s. 111-124
-
Tidskriftsartikel (refereegranskat)abstract
- High-frequency mechanical impact (HFMI) treatment can enable resource-efficient structural design byimproving the fatigue strength of welded joints. While the thickness effect with reference to the fatigueof welded details is well known and covered in design codes, this effect has not been investigated systematicallywhen the welds are improved by HFMI. In this study, experimental data of 582 small-scale fatiguetests on welded details with HFMI treatment has been collected from the literature and evaluated withrespect to the thickness effect. In order to separate the effects of yield strength and thickness on the fatiguestrength, a new approach was developed to adjust the data to a reference yield strength of 355 MPaprior to thickness evaluation. The test data covered transverse butt welds, details with non-load-carryingtransverse attachments and details with non-load-carrying longitudinal attachments. The thicknesseffect of details with transverse attachments corresponds well with the IIW recommendation ofn = 0.2, whereas transverse butt welds have a much weaker thickness effect. Details with longitudinalattachments show a ‘‘reverse” thickness effect.
|
|
| 37. |
- Taddei, C, et al.
(författare)
-
Repositioning of the global epicentre of non-optimal cholesterol
- 2020
-
Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 582:7810, s. 73-
-
Tidskriftsartikel (refereegranskat)abstract
- High blood cholesterol is typically considered a feature of wealthy western countries1,2. However, dietary and behavioural determinants of blood cholesterol are changing rapidly throughout the world3 and countries are using lipid-lowering medications at varying rates. These changes can have distinct effects on the levels of high-density lipoprotein (HDL) cholesterol and non-HDL cholesterol, which have different effects on human health4,5. However, the trends of HDL and non-HDL cholesterol levels over time have not been previously reported in a global analysis. Here we pooled 1,127 population-based studies that measured blood lipids in 102.6 million individuals aged 18 years and older to estimate trends from 1980 to 2018 in mean total, non-HDL and HDL cholesterol levels for 200 countries. Globally, there was little change in total or non-HDL cholesterol from 1980 to 2018. This was a net effect of increases in low- and middle-income countries, especially in east and southeast Asia, and decreases in high-income western countries, especially those in northwestern Europe, and in central and eastern Europe. As a result, countries with the highest level of non-HDL cholesterol—which is a marker of cardiovascular risk—changed from those in western Europe such as Belgium, Finland, Greenland, Iceland, Norway, Sweden, Switzerland and Malta in 1980 to those in Asia and the Pacific, such as Tokelau, Malaysia, The Philippines and Thailand. In 2017, high non-HDL cholesterol was responsible for an estimated 3.9 million (95% credible interval 3.7 million–4.2 million) worldwide deaths, half of which occurred in east, southeast and south Asia. The global repositioning of lipid-related risk, with non-optimal cholesterol shifting from a distinct feature of high-income countries in northwestern Europe, north America and Australasia to one that affects countries in east and southeast Asia and Oceania should motivate the use of population-based policies and personal interventions to improve nutrition and enhance access to treatment throughout the world.
|
|
| 38. |
- Vaezghasemi, Masoud, et al.
(författare)
-
Concerned and conscious, but defenceless - the intersection of gender and generation in child malnutrition in Indonesia : a qualitative grounded theory study
- 2020
-
Ingår i: Global Health Action. - : Taylor & Francis. - 1654-9716 .- 1654-9880. ; 13:1
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Several studies in Indonesia have shown the protective effect of women-headed households on the double burden of malnutrition (coexistence of undernutrition and overnutrition in a household). Many other studies have presented a positive impact on children’s health and conditions when women are educated, have higher social capital and have control of income and its intra-household allocation. However, how women’s status affects the nutritional status of a household and, in particular, of children still remains understudied.Objective: In this study, our aim was to explore the role of gender relations and contextual factors for overnutrition and undernutrition among children within a household.Method: We conducted a qualitative study in two provinces of Indonesia: Central Java (urban and rural) and Jakarta (central and suburban) among 123 community members (59 men and 64 women). We utilised principles of constructivist grounded theory in conducting this study, and focus group discussions were chosen as a tool to collect data.Results: Three categories were constructed, capturing the significance of: (i) the man is dominant within the family (gendered power relations), (ii) the environment that makes the unhealthy choice the easy choice (the emerging obesogenic environment) and (iii) parents’ being concerned but unable to control their children’s eating habits (intersection of gender and generational relations) in child malnutrition.Conclusion: Community health and nutrition programmes should help both women and men within the context of households to acknowledge and respect women’s status. More importantly, these programmes should involve men when it comes to children’s nutritional habits and consider them as an important factor in the realisation of gender equality and empowerment. Furthermore, it is increasingly important to recognise the implication of the availability and accessibility of junk food among children.
|
|
| 39. |
- Vaezghasemi, Masoud, et al.
(författare)
-
The effect of gender and social capital on the dual burden of malnutrition : a multilevel study in indonesia
- 2014
-
Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 9:8, s. e103849-
-
Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The paradoxical phenomenon of the coexistence of overweight and underweight individuals in the same household, referred to as the "dual burden of malnutrition", is a growing nutrition dilemma in low- and middle-income countries (LMICs).AIMS: The objectives of this study were (i) to examine the extent of the dual burden of malnutrition across different provinces in Indonesia and (ii) to determine how gender, community social capital, place of residency and other socio-economic factors affect the prevalence of the dual burden of malnutrition.METHODS: The current study utilized data from the fourth wave of the Indonesian Family Life Survey (IFLS) conducted between November 2007 and April 2008. The dataset contains information from 12,048 households and 45,306 individuals of all ages. This study focused on households with individuals over two years old. To account for the multilevel nature of the data, a multilevel multiple logistic regression was conducted.RESULTS: Approximately one-fifth of all households in Indonesia exhibited the dual burden of malnutrition, which was more prevalent among male-headed households, households with a high Socio-economic status (SES), and households in urban areas. Minimal variation in the dual burden of malnutrition was explained by the community level differences (<4%). Living in households with a higher SES resulted in higher odds of the dual burden of malnutrition but not among female-headed households and communities with the highest social capital.CONCLUSION: To improve household health and reduce the inequality across different SES groups, this study emphasizes the inclusion of women's empowerment and community social capital into intervention programs addressing the dual burden of malnutrition.
|
|
| 40. |
|
|
| 41. |
|
|
