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- Al-Najjar, Basim, 1954-, et al.
(författare)
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Selecting the Most Efficient Maintenance Approach Using Fuzzy Multiple Criteria Decision Making
- 2003
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Ingår i: International Journal of Production Economics. - 0925-5273 .- 1873-7579. ; 84:1, s. 85-100
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Tidskriftsartikel (refereegranskat)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.
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- Albinsson, Gunilla, et al.
(författare)
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Maktutövning ur ett organisations- och genusperspektiv. En studie vid tre vårdavdelningar
- 2000
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)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.
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- Arvidsson, Stefan, 1968-
(författare)
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Ariska idoler : Den indoeuropeiska mytologin som ideologi och vetenskap
- 2000
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- By using ancient texts, medieval documents, philological observations, and archaeological artifacts, scholars have reconstructed a prehistorical world and religion. The people who upheld this culture have been named, inter alia, "Indo-Europeans", "Aryans", "Japhetites" and "Wiros". Yet, these people have not left any texts, no artifacts can with certainty be ascribed to them, nor do we know any individual "Indo-European" by name. Despite this, scholars have, with help from daring historical, linguistic and archaeological reconstructions, persistently tried to reach the ancient Indo-Europeans in hopes of finding the foundations for their own culture and religion. The main hypothesis of this thesis is that these pre-historical peoples have not occupied modern man because they were important as historical agents, but because they were, with the words of Claude Lévi-Strauss, "good to think". The interest in "the Indo-Europeans", "the Aryans" and their "Others" — which latter group has at times been described as Jews, Savages, Orientals, Aristocrats, priests, matriarchal farmers, martial pastoralists, French liberals, and/or German nationalists — was (and still is) motivated by a wish to construct alternatives to those identities given by tradition. The study of the Indo-Europeans, their culture and religion, has been a way to produce new concepts, new identities and thus an alternative future. Chapter 1 describes how the concept of an Indo-European entity evolved during the 18th and 19th centuries out of speculations on the identity of different people mentioned in the Bible, out of the discovery of similarities between Indic and European languages, and out of romantic ideas about race and Volk. Chapter 2 deals with the first paradigm in the Indo-European studies, the Nature-Mythological school, and its relationship to Christianity, anti-Semitism and liberal-bourgeois mentality. Chapter 3 discusses the "primitivization" of the "Indo-Europeans" that developt at the end of the 19th century due to nationalism and vitalistic philosophy. Chapter 4 analyses the relationship between the study of Indo-Germanic or Aryan religion in the Third Reich and Nazi ideology. Chapter 5 treats theories that were created as alternative to Nazi scholarship by fascist, Catholic scholars. That chapter also deals with the developments in the study of Indo-European religion and culture during the last half of the 20th century
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- Bengtsson, Peter, 1974-, et al.
(författare)
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Evaluation of hydrocarbon emissions from heart- and sapwood of Scots pine using a laboratory-scale wood drier
- 2004
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Ingår i: Holzforschung. - : Walter de Gruyter. - 1437-434X .- 0018-3830. ; 58:6, s. 660-665
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Tidskriftsartikel (refereegranskat)abstract
- The subject of study is the emission of Volatile Organic Compounds (VOC) during the drying of wood. Heartwood and sapwood from Scots pine were dried at different temperatures (50, 70 and 90°C) in a laboratory kiln. The sampling method, Solid Phase Microextraction was used to collect the different volatile organic compounds during the drying. The gas chromatograph and mass spectrometer was used to identify and quantify the organic matter. The total hydrocarbons were measured with a flame ionization detector. Primarily, different monoterpenes were released during the drying process. 3-carene and α-pinene were most common and were also analytically quantified. The diterpene, pimaral, was found in an estimated large amount in the later stage of the drying process but was not exactly quantified. Large differences in both release behaviour and total amount of released hydrocarbon between heart- and sapwood were obtained. Emissions of VOC from heartwood were of a magnitude approximately three times higher than that from sapwood.
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- Björklund, Fredrik, et al.
(författare)
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Emotion and social motivation in university students´ real life moral dilemmas
- 2002
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Studied the relationship between motivation and approaches to moral decision-making, and the emotions experienced in moral dilemmas. 44 students were interviewed about a dilemma they had faced. Intimacy was related to a preference for making decisions after having consulted others and to being open to their values and norms, whereas achievement was related to consequence-oriented reasoning and concrete construal of moral problems. When asked to relive their moral dilemma, participants scored lower than their baseline level on a mood questionnaire, females scoring lower than the males. Possible implications of emotion on cognitive processes involved in solving moral dilemmas are discussed.
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- Blixt Wojciechowski, Anita, et al.
(författare)
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Long-term survival and glial differentiation of the brain-derived precursor cell line RN33B after subretinal transplantation to adult normal rats
- 2002
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Ingår i: Stem Cells. - : Oxford University Press (OUP). - 1549-4918 .- 1066-5099. ; 20:2, s. 163-173
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Tidskriftsartikel (refereegranskat)abstract
- The potential use of in vitro-expanded precursor cells or cell lines in repair includes transplantation of such cells for cell replacement purposes and the activation of host cells to provide "self-repair." Recently, we have reported that cells from the brain-derived cell line RN33B (derived from the embryonic rat medullary raphe and immortalized through retroviral transduction of the temperature-sensitive mutant of the simian virus 40 ([SV40] large T-antigen) survive for at least 4 weeks, integrate, and differentiate after subretinal grafting to normal adult rats. Here, we demonstrate that grafts of these cells survive for at least 4 months after subretinal transplantation to adult, normal immunosuppressed rats. Implanted cells integrate into the retinal pigment epithelium and the inner retinal layers, and the anterior part of the optic nerve. In addition, the RN33B cells migrate within the retina, occupying the whole retina from one eccentricity to the other. A large fraction of the grafted cells differentiate into glial cells, as shown by double labeling of the reporter genes LacZ or green fluorescent protein, and several glial markers, including oligodendrocytes. However, the cells did not differentiate into retinal neurons, judging from their lack of expression of retinal neuronal phenotypic markers. A significant number of the implanted cells in the host retina were in a proliferative stage, judging from proliferative cell nuclear antigen and SV40 large T-antigen immunohistochemistry. To conclude, the cells survived, integrated, and migrated over long distances within the host. Therefore, our results may be advantageous for future design of therapeutic strategies, since such cells may have the potential of being a source of, for example, growth factor delivery in experimental models of retinal degeneration.
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| 10. |
- Blixt Wojciechowski, Anita, et al.
(författare)
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Migratory capacity of the cell line RN33B and the host glial cell response after subretinal transplantation to normal adult rats
- 2004
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Ingår i: Glia. - : John Wiley & Sons. - 0894-1491 .- 1098-1136. ; 47:1, s. 58-67
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Tidskriftsartikel (refereegranskat)abstract
- As previously reported, the brain-derived precursor cell line RN33B has a great capacity to migrate when transplanted to adult brain or retina. This cell line is immortalized with the SV40 large T-antigen and carries the reporter gene LacZ and the green fluorescent protein GFP. In the present study, the precursor cells were transplanted to the subretinal space of adult rats and investigated early after grafting. The purpose was to demonstrate the migration of the grafted cells from the subretinal space into the retina and the glial cell response of the host retina. Detachment caused by the transplantation method was persistent up to 4 days after transplantation, and then reattachment occurred. The grafted cells were shown to migrate in between the photoreceptor cells before entering into the plexiform layers. Molecules involved in migration of immature neuronal cells as the polysialylated neural cell adhesion molecule (PSA-NCAM) and the collapsing response-mediated protein 4 (TUC-4) was found in the plexiform layers of the host retina, but not in the grafted cells. The expression of the intermediate filaments GFAP, vimentin, and nestin was intensely upregulated immediately after transplantation. A less pronounced upregulation was observed on sham-operated animals. In summary, the RN33B cell line migrated promptly posttransplantation and settled preferably into the plexiform layers of the retina, the same layers where the migration cues PSA-NCAM and TUC-4 were established. In addition, both the transplantation method per se and the implanted cells caused an intense glial cell response by the host retina.
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