| 41. |
- Al-Najjar, Basim, 1954-, et al.
(author)
-
Selecting the Most Efficient Maintenance Approach Using Fuzzy Multiple Criteria Decision Making
- 2003
-
In: International Journal of Production Economics. - 0925-5273 .- 1873-7579. ; 84:1, s. 85-100
-
Journal article (peer-reviewed)abstract
- We assess the most popular maintenance approaches, i.e. strategies, policies, or philosophies, using a fuzzy multiple criteria decision making (MCDM) evaluation methodology. We illustrate with two examples how the suggested evaluation methodology identifies the most informative approach. Using the fuzzy MCDM, it would be possible to select in advance, the most informative (efficient) maintenance approach. Consequently, this leads to less planned replacements, and failures would be reduced to approximately zero and higher utilization of component life can be achieved. Thus, the maintenance department could contribute more to the business objectives throughout participating effectively in adding value to the production activities.
|
|
| 42. |
|
|
| 43. |
- Albertazzi, S, et al.
(author)
-
The technical feasibility of biomass gasification for hydrogen production
- 2005
-
In: Catalysis Today. - : Elsevier BV. - 0920-5861 .- 1873-4308. ; 106:1-4, s. 297-300
-
Journal article (peer-reviewed)abstract
- Biomass gasification for energy or hydrogen production is a field in continuous evolution, due to the fact that biomass is a renewable and CO2 neutral source. The ability to produce biomass-derived vehicle fuel on a large scale will help to reduce greenhouse gas and pollution, increase the security of European energy supplies, and enhance the use of renewable energy. The Varnamo, Biomass Gassification Centre in Sweden is a unique plant and an important site for the development of innovative technologies for biomass transformation. At the moment, the Varnamo plant is the heart of the CHRISGAS European project, that aims to convert the produced gas for further upgrading to liquid fuels as dimethyl ether (DME), methanol or Fischer-Tropsch (F-T) derived diesel. The present work is an attempt to highlight the conditions for the reforming unit and the problems related to working with streams having high contents of sulphur and alkali metals.
|
|
| 44. |
- Albin, Björn, et al.
(author)
-
Comparison of Stroke Mortality in Finnish-Born Migrants Living in Sweden 1970-1999 and in Swedish-Born Individuals
- 2014
-
In: Journal of Immigrant and Minority Health. - : Springer Science and Business Media LLC. - 1557-1912 .- 1557-1920. ; 16:1, s. 18-23
-
Journal article (peer-reviewed)abstract
- A limited number of studies have been found on stroke mortality in migrants showing higher mortality for some groups. Influence of time of residence has been studied by one research group. An earlier study showed a significantly higher number of deaths in Diseases of the circulatory system in Finnish migrants compared with native Swedes. To test the hypothesis of a higher mortality in and a decrease in mortality over time in stroke among Finnish migrants in Sweden. The study was based on National Population data, the study population included 321,407 Swedish and 307,174 foreign born persons living in Sweden 1987-1999. Mean age was lower at time for death for Finnish migrants than native Swedes, men 5.1 years difference and women 2.3 years. The difference decreased over time. The risk of death by stroke was higher for migrants with short time of residence than with long time (<= 10 years, OR 1.61-1.36 vs >= 11 year, OR 1.18). Migrants with short time of residence died 9.8-5.3 years earlier than native Swedes. The hypothesis was confirmed and an indication of adjustment to life in the new country was found. International studies show similar results for other migrant groups but further studies are needed to verify if the same pattern can be found in other migrants groups in Sweden and to generalise the findings.
|
|
| 45. |
- Albin, Björn, 1951-, et al.
(author)
-
Lower prevalence of hip fractures in foreign-born individuals than in Swedish-born individuals during the period 1987-1999
- 2010
-
In: BMC Musculoskeletal Disorders. - London, UK : BioMed Central (BMC). - 1471-2474. ; 11, s. 203-
-
Journal article (peer-reviewed)abstract
- Cultural background and environmental factors such as UV-radiation and lifestyle during childhood and adolescence may influence the risk of a hip fracture event later in life. Differences in prevalence might occur between the indigenous population and those who have migrated to a country.METHODS: The study was based on national population data. The study population consisted of 321,407 Swedish-born and 307,174 foreign-born persons living in Sweden during the period 1987-1999.RESULTS: Foreign-born persons had reduced risk of hip fracture, with odds ratios (ORs) of 0.47-0.77 for men and 0.42-0.88 for women respectively. Foreign-born women had the hip fracture event at a higher age on average, but a longer time spent in Sweden was associated with a small but significant increase in risk.CONCLUSIONS: There was a reduced risk of hip fracture in all foreign-born individuals, and that the hip fracture event generally happened at a higher age in foreign-born women. Migration must therefore be considered in relation to the prevalence and risk of hip fracture. Migration can therefore have a positive effect on one aspect of the health of a population, and can influence and lower the total cost of healthcare due to reduced risk and prevalence of hip fracture.
|
|
| 46. |
- Albin, Björn
(author)
-
Morbidity and mortality among foreign-born Swedes
- 2006
-
Doctoral thesis (other academic/artistic)abstract
- Aims: The general aim of this thesis was to describe and compare the group of foreign-born persons living in Sweden and native Swedes with regard to health development over time, thus studying the influence of migration on health. Methods: All four studies are based on data from Statistics Sweden (SCB) and the National Board of Health and Welfare, Centre for Epidemiology covering the period 1970?1999. The database used included all foreign-born persons aged 16 years and upwards who were registered as living in Sweden in 1970. For each foreign-born person a Swedish matched control was chosen. The control was matched and was similar in age, sex, occupation, type of employment and county of residence in 1970. In total 906,564 people were included, 50 percent foreign-born persons. Information from the National Board of Health and Welfare, Centre for Epidemiology on date of death and death diagnosis was added to the database. Exclusion criteria were if no information was available or if a person had emigrated or migrated back (?re-migrated?). Persons were then also excluded if the information from the control subject was missing due to migration. The database used for analysis finally consisted of 723,948 persons, 361,974 foreign-born and 361,974 Swedish controls. All statistical analyses were carried out using the SPSS (Statistical Package for Social Sciences) program, version 11.5, and both descriptive and analytic statistic methods were used. Results: The results of the four studies show that foreign-born persons living in Sweden 1970?1999 have higher mortality, lower mean age at time of death and a different pattern of causes of death. The studies also found a tendency to less utilization of health care and that county of residence influences mortality among foreign-born persons. The most important finding was that migration has an influence on health. Conclusion: To explain the differences found in health among foreign-born persons, several different factors have to be taken into account. Health is influenced by economic situation, housing, working conditions, unemployment, social network and background before migration. Social and physical environment or inequalities in resources and utilization of health care are important. Migration is shown to have a negative influence on health and is an important factor to consider when studying mortality and health in a population.
|
|
| 47. |
- Albin, Björn, 1951-, et al.
(author)
-
Residential mobility among foreign-born persons living in Sweden is associated with lower morbidity
- 2010
-
In: Clinical Epidemiology. - Macclesfield, UK : Dove Medical Press Ltd.. - 1179-1349 .- 1179-1349. ; 9:2, s. 187-194
-
Journal article (peer-reviewed)abstract
- Aim: to analyze the pattern of mortality in deceased foreign-born persons living in Sweden during the years 1970-1999 in relation to distance mobility.MEthods: Data from Statistics Sweden and the National Board of Health and Welfare was used, and the study population consisted of 281,412 foreign-born persons aged 16 years and over who were registered as living in Sweden in 1970.Results: Distance mobility did not have a negative effect on health. Total mortality was lower (OR 0.71; 95% CI 0.69-0.73) in foreign-born persons in Sweden who had changed their county of residence during the period 1970-1990. Higher death rates were observed, after adjustment for age, in three ICD diagnosis groups "Injury and poisoning", "External causes of injury and poisoning", and "Diseases of the digestive system" among persons who had changed county of residence.
|
|
| 48. |
- Albin, Björn, et al.
(author)
-
Utilization of In-Hospital Care among Foreign-Born Compared to Native Swedes 1987-1999
- 2012
-
In: Nursing Research and Practice. - : Hindawi Publishing Corporation. - 2090-1429 .- 2090-1437. ; 2012
-
Journal article (peer-reviewed)abstract
- In previous longitudinal studies of mortality and morbidity among foreign-born and native-born Swedes, increased mortality and dissimilarities in mortality pattern were found. The aim of this study is to describe, compare, and analyse the utilization of in-hospital care among deceased foreign- and Swedish-born persons during the years 1987–1999 with focus on four diagnostic categories. The study population consisted of 361,974 foreign-born persons aged 16 years and upward who were registered as living in Sweden in 1970, together with 361,974 matched Swedish controls for each person. Data from Statistics Sweden (SCB) and the National Board of Health and Welfare Centre for Epidemiology, covering the period 1970–1999, was used. Persons were selected if they were admitted to hospital during 1987–1999 and the cause of death was in one of four ICD groups. The results indicate a tendency towards less health care utilization among migrants, especially men, as regards Symptoms, signs, and ill-defined conditions and Injury and poisoning. Further studies are needed to explore the possible explanations and the pattern of other diseases to see whether migrants, and especially migrant men, are a risk group with less utilization of health care.
|
|
| 49. |
- Albinsson, Gunilla, et al.
(author)
-
Maktutövning ur ett organisations- och genusperspektiv. En studie vid tre vårdavdelningar
- 2000
-
Doctoral thesis (other academic/artistic)abstract
- The primary aim of the present thesis is to increase understandig of the relationship between organisational structure, gender and power. Understanding of this relationship requires a closeness to the individual being studied as well to the content and consequences of that individuals´actions. The empirical object of study is a group of professional women at a somatic clinic. The problem investigated is based on a theoretical perspective on organisations; feminist theories and power theories. Our starting point was that these women should be seen as subjects who actively shape their own daily living situation, experience and actions. We thus felt it appropriate to choose a qualitative method. Data was collected by means of observation and qualitative interviews. The results show that the first foundation of gender-related domination at the clinic was hierarchial and bureaucratic and was characterised by a clear power symmetry and division of labour. The second foundation of gender-related domination resulted in the organisational structure of the clinic allowing a few men at the top of the hierarchy to exercise power over the women in the middle and lower levels. An important conclusion is that the women studied were clearly at a disadvantage in a hierarchial organisation. The difference in influence between men and women in the study was further reinforced by the fact that the various professional categories belonged to different sub-cultures. The unisexual sub-cultures when combined with the doctor´s normative sub-culture further increased the opportunities for the men studied to dominate the women, thereby reinforcing the impression that the organisation was based om male norms and the logic of segregation. Male domination can also be understood from an individual perspective. The men studied adopted different strategies as a means of accentuating their position in relation to the women. The study comprised a few women who used specific domination tactics. They possessed knowledge of the different power techniques open to them, and they used these in their relations with men. Knowledge of the two foundations mentioned stimulates the desire to initiate changes. One element of significance in such changes is the re-forming of structural conditions. It is important to bring about changes at individual level. Men and women´s consciousness of, and knowledge about, gender-related domination must be the focus of attention.
|
|
| 50. |
- Ale Ebrahim Dehkordi, Molood, et al.
(author)
-
Long-term dynamics of institutions : Using ABM as a complementary tool to support theory development in historical studies
- 2021
-
In: JASSS. - : Journal of Artificial Societies and Social Simulation. - 1460-7425. ; 24:4
-
Journal article (peer-reviewed)abstract
- Historical data are valuable resources for providing insights into social patterns in the past. However, these data often inform us at the macro-level of analysis but not about the role of individuals’ behaviours in the emergence of long-term patterns. Therefore, it is difficult to infer ‘how’ and ‘why’ certain patterns emerged in the past. Historians use various methods to draw hypotheses about the underlying reasons for emerging patterns and trends, but since the patterns are the results of hundreds if not thousands of years of human behaviour, these hypotheses can never be tested in reality. Our proposition is that simulation models and specifically, agent-based models (ABMs) can be used as complementary tools in historical studies to support hypothesis building. The approach that we propose and test in this paper is to design and configure models in such a way as to generate historical patterns, consequently aiming to find individual-level explanations for the emerging pattern. In this work, we use an existing, empirically validated, agent-based model of common pool resource management to test hypotheses formulated based on a historical dataset. We first investigate whether the model can replicate various patterns observed in the dataset, and second, whether it can contribute to a better understanding of the underlying mechanism that led to the observed empirical trends. We showcase how ABM can be used as a complementary tool to support theory development in historical studies. Finally, we provide some guidelines for using ABM as a tool to test historical hypotheses.
|
|
