| 11. |
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| 12. |
- Andersson, Kristin, 1976, et al.
(författare)
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Synthesis of Restart States for Manufacturing Cell Controllers
- 2009
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Ingår i: 2nd IFAC Workshop on Dependable Control of Discrete Systems, DCDS’09, Bari, Italy.
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Konferensbidrag (refereegranskat)abstract
- In earlier work we presented a method for restart of manufacturing systems. After correction of an error, the system resumes normal production by returning to a certain restart state in the control function, and from there reexecuting parts of the work schedule. The current paper concerns automatically finding (synthesizing) the restart states. The control function is modeled by finite automata, and properties of the restart states are defined. The synthesis process finds all possible restart states, guaranteeing that the execution restrictions are fulfilled during a restart, and that the production goals can be maintained. The error and the corrective actions preceding the restart need not be modeled; neither is it necessary to know the exact physical states of the machines at the time of the error. The number of restart states is finally minimized to reduce the need for extensions to the control program.
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| 13. |
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| 14. |
- Andersson, M. L. E., et al.
(författare)
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Diurnal variation in serum levels of cartilage oligomeric matrix protein in patients with knee osteoarthritis or rheumatoid arthritis
- 2006
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Ingår i: Annals of the Rheumatic Diseases. - : BMJ. - 0003-4967 .- 1468-2060. ; 65:11, s. 1490-1494
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To monitor changes in serum concentrations of cartilage oligomeric matrix protein (COMP) during a 24-h period to determine any diurnal variation, and to estimate the half life of COMP in the circulation in patients with symptomatic knee osteoarthritis and in those with rheumatoid arthritis. Methods: Serum samples were drawn every 4 h (7 samples/patient over 24 h) in 10 patients with knee osteoarthritis and 14 patients with rheumatoid arthritis. Osteoarthritis was defined radiographically and clinically (American College of Rheumatology (ACR) criteria) and rheumatoid arthritis according to the 1987 ACR criteria. Serum COMP was measured by sandwich ELISA. A statistical model for the diurnal variation in the COMP levels was developed using the computer program NONMEM. Results: No considerable changes in COMP levels were observed during the day between 08:00 and 21:00 in either group. A significant decrease in serum COMP was apparent during bed rest at night, reaching the lowest levels between 04:00 and 05:00 (p < 0.03 or better v all other time points) in patients with osteoarthritis and in those with rheumatoid arthritis. From the rate of decreasing serum COMP levels, a putative half life of COMP in the circulation was estimated to be 7.4 h. Conclusion: During normal daytime activities, serum COMP levels are constant. The decrease during the night indicates a rapid elimination of COMP once it has reached the circulation. The stable COMP levels during the day suggest that it is not necessary to further standardise the time of serum sampling in clinical practice.
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| 15. |
- Andersson, Therése, 1974-
(författare)
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Beauty Box : Filmstjärnor och skönhetskultur i det tidiga 1900-talets Sverige
- 2006
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The object of this dissertation is the relationship between film, fashion and beauty concerning different understandings of femininity, with reference to the establishment of the star system and the making of celebrity culture, and how these were expressed through magazines and commercial ads in early 20th century Sweden. The period of time framing the discussion, from fin-de-siècle and onwards with specific focus on the 1920s and 1930s, corresponds to the course of publication of the Swedish magazine Filmjournalen. Star studies and reception studies make up the theoretical framework, offering an understanding of the popular press both as a source of knowledge for and as an intermediary of fashion and style, creating a wider network of texts and images and providing a context for how films were presented for Swedish, mainly female, audiences. Spectatorship is therefore considered from the viewpoint of address, in line with Miriam Hansen’s angle, analysing how a network of texts and images, exceeding the particular film, constitutes the positions of spectators. Film stars are understood as embodying different ideas; represented, negotiated, and incorporated in already existing lines of thoughts, drawing attention to questions of media presentation, and to the ideas appearing behind the beauty ideals and the aesthetics. The discussion on stars is narrowed down to concern three particular themes - consumerism, emancipation and physiognomy - when presupposing femininity as defined by appearance; considering cosmetics and fashion as providing practical, next-to-the-skin tools in this making, while film and journalism are working on a social, discursive level. Judith Butler’s account of performance and Teresa de Lauretis’ understanding of technologies of the self are significant for this study, as well as Richard Dyer’s approach, considering film stars as articulating the business of being an individual when representing familiar ways of feeling and thinking.
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| 16. |
- Eriksson, Therese, et al.
(författare)
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Magnetic short-range order in the new ternary phase Mn8Pd15Si7
- 2005
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Ingår i: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 403:1-2, s. 19-28
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Tidskriftsartikel (refereegranskat)abstract
- A new compound, Mn8Pd15Si7, is reported to crystallize in a face centered cubic unit cell of dimension a = 12.0141(2) Å, space group, and can thus be classified as a G-phase. The crystal structure was studied by single crystal X-ray diffraction, X-ray and neutron powder diffraction and electron diffraction. A filled Mg6Cu16Si7 type structure was found, corresponding to the Sc11Ir4 type structure. The magnetic properties were investigated by magnetization measurements and Reverse Monte Carlo modeling of low temperature magnetic short-range order (SRO). Dominating near neighbor antiferromagnetic correlations were found between the Mn atoms and geometric frustration in combination with random magnetic interactions via metal sites with partial Mn occupancy were suggested to hinder formation of long-range magnetic order.
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| 17. |
- Falkman, Petter, 1972, et al.
(författare)
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Specification of Production Systems Using PPN and Sequential Operation Charts
- 2007
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Ingår i: 3rd IEEE International Conference on Automation Science and Engineering, IEEE CASE 2007; Scottsdale, AZ; United States; 22 September 2007 through 25 September 2007. - 1424411548 ; , s. 20-25
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Konferensbidrag (refereegranskat)abstract
- In this paper specification of discrete event systems, more specifically flexible production systems, is performed using two high level specification languages. The first language, called process algebra Petri net (PPN), is a mathematically well defined language that combines Petri nets and process algebra in order to achieve compact and concise specifications of complex systems. The second language, sequential operation charts (SOC), is a language specifically developed to meet expectations from industry concerning both programming style and information handling. SOC is based on the PPN language, but presents constructs that enable the language to be used not only for specifying process descriptions but also product and preparation related information. This makes it possible to use the SOC language all the way from the concept phase until final production. This paper has three aims. The first is to show the advantages of the PPN language compared to ordinary Petri nets. The second aim is to show how the SOC language is defined with respect to the PPN, language and the third aim finally is to show how SOCs can be used for the specification of a real industry case.
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| 18. |
- Forslund, Ola, et al.
(författare)
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Cutaneous human papillomaviruses found in sun-exposed skin: Beta-papillomavirus species 2 predominates in squamous cell carcinoma
- 2007
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Ingår i: Journal of Infectious Diseases. - : Oxford University Press (OUP). - 1537-6613 .- 0022-1899. ; 196, s. 876-83
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Tidskriftsartikel (refereegranskat)abstract
- Background. A spectrum of cutaneous human papillomaviruses (HPVs) is detectable in nonmelanoma skin cancers, as well as in healthy skin, but the significance that the presence of these types of HPV DNA has for the pathogenesis of skin cancer remains unclear. Methods. We studied 349 nonimmunosuppressed patients with skin lesions (82 with squamous cell carcinomas, 126 with basal cell carcinomas, 49 with actinic keratoses, and 92 with benign lesions). After superficial skin had been removed by tape, paired biopsy samples-from the lesion and from healthy skin from the same patient-were tested for HPV DNA. Risk factors for HPV DNA were analyzed in multivariate models. Results. Overall, 12% of healthy skin samples were positive for HPV DNA, compared with 26% of benign lesions, 22% of actinic keratoses, 18% of basal cell carcinomas, and 26% of squamous cell carcinomas. HPV DNA was associated with sites extensively exposed to the sun, both for the lesions (odds ratio [OR], 4.45 [95% confidence interval {CI}, 2.44-8.111) and for the healthy skin samples (OR, 3.65 [95% CI 1.79-7.44]). HPV types of Beta-papillomavirus species 2 predominate in squamous cell carcinomas (OR, 4.40 [95% CI, 1.92-10.06]), whereas HPV types of Beta-papillomavirus species 1 are primarily found in benign lesions (OR, 3.47 [95% CI, 1.72-6.99]). Conclusions. Cutaneous HPV types are primarily detected at sites extensively exposed to the sun. HPV types of Beta-papillomavirus species 2, but not of species 1, are associated with squamous cell carcinoma.
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| 19. |
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| 20. |
- Hazard, Kristina, et al.
(författare)
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Cutaneous Human Papillomaviruses Persist on Healthy Skin.
- 2007
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Ingår i: Journal of Investigative Dermatology. - : Elsevier BV. - 1523-1747 .- 0022-202X. ; 127:1, s. 116-119
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Tidskriftsartikel (refereegranskat)abstract
- Cutaneous human papillomaviruses (HPVs) are frequently found in healthy skin and have also been implicated in non-melanoma skin cancer. For genital HPV types, a persistent infection with one of the high-risk types is a prerequisite for the development of cervical cancer. However, there is only limited data on whether infections with cutaneous HPV types persist over time. Serial forehead swab samples collected from 63 volunteers (42 healthy individuals and 31 renal transplant recipients (RTs)), sampled 6.3 years (range: 5.0-7.0 years) apart, were analyzed for HPV using general primer PCR, cloning, and sequencing. Among the healthy individuals, the prevalences of HPV were 69% (29/42) at enrolment and 71% (30/42) at follow-up. Among the individuals positive at baseline, 48% (14/29) had a persistent infection. Among the RTRs, 71% (15/21) were positive for HPV at enrolment and 90% (19/21) at follow-up. A persistent infection was detected in 33% (5/15). In total, HPV was detected in 44 of the samples collected at baseline and the same virus was found at follow-up in 43% (19/44). Persistence was not significantly associated with age, sex, immunosuppressive treatment, history of warts, or genus of HPV. We conclude that cutaneous HPV infections commonly persist over several years on healthy skin.
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