| 1. |
- Andersson, Carin, et al.
(författare)
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Experimental studies of cutting force variation in face milling
- 2011
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Ingår i: International Journal of Machine Tools & Manufacture. - : Elsevier BV. - 0890-6955. ; 51:1, s. 67-76
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this paper is to present a developed cutting force model for multi-toothed cutting processes, including a complete set of parameters influencing the cutting force variation that has been shown to occur in face milling, and to analyse to what extent these parameters influence the total cutting force variation for a selected tool geometry. The scope is to model and analyse the cutting forces for each individual tooth on the tool, to be able to draw conclusions about how the cutting action for an individual tooth is affected by its neighbours. A previously developed cutting force model for multi-toothed cutting processes is supplemented with three new parameters; eccentricity of the spindle, continuous cutting edge deterioration and load inflicted tool deflection influencing the cutting force variation. A previously developed milling force sensor is used to experimentally analyse the cutting force variation, and to give input to the cutting force simulation performed with the developed cutting force model. The experimental results from the case studied in this paper show that there are mainly three factors influencing the cutting force variation for a tool with new inserts. Radial and axial cutting edge position causes approximately 50% of the force variation for the case studied in this paper. Approximately 40% arises from eccentricity and the remaining 10% is the result of spindle deflection during machining. The experimental results presented in this paper show a new type of cutting force diagrams where the force variation for each individual tooth when two cutting edges are engaged in the workpiece at the same time. The wear studies performed shows a redistribution of the individual main cutting forces dependent on the wear propagation for each tooth.
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| 2. |
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| 3. |
- Andersson Lundell, Anna-Carin, 1976, et al.
(författare)
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Development of gut-homing receptors on circulating B cells during infancy.
- 2011
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Ingår i: Clinical immunology. - : Elsevier BV. - 1521-7035 .- 1521-6616. ; 138:1, s. 97-106
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Tidskriftsartikel (refereegranskat)abstract
- B cell gut-homing is mainly mediated by α4β7, CCR9 and CCR10. We here studied the expression of these receptors on B cells from cord blood and from peripheral blood at 1, 4, 18 and 36months of age in a prospective cohort of Swedish infants. The proportion of all B cells expressing α4β7 as well as the fraction of CCR10+ B cells expressing α4β7 was highest in early infancy. Nearly all naïve B cells in all age groups expressed α4β7, whereas the expression on class-switched B cells decreased with age. Moreover, the proportion of both IgA+ and IgG+ B cells expressing α4β7, CCR9 and CCR10 were higher during the first months when compared to adults. In conclusion, the high fraction of circulating IgA+ and IgG+ B cells expressing CCR9 and CCR10 in the first months of life indicates activation of naïve B cells in the gut, coinciding with bacterial colonization.
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| 4. |
- Danielsson, Christian, et al.
(författare)
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Exploration of human, rat, and rabbit embryonic cardiomyocytes suggests K-channel block as a common teratogenic mechanism
- 2013
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Ingår i: Cardiovascular Research. - : Oxford University Press (OUP): Policy B. - 0008-6363 .- 1755-3245. ; 97:1, s. 23-32
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Tidskriftsartikel (refereegranskat)abstract
- Several drugs blocking the rapidly activating potassium (K-r) channel cause malformations (including cardiac defects) and embryonic death in animal teratology studies. In humans, these drugs have an established risk for acquired long-QT syndrome and arrhythmia. Recently, associations between cardiac defects and spontaneous abortions have been reported for drugs widely used in pregnancy (e.g. antidepressants), with long-QT syndrome risk. To investigate whether a common embryonic adverse-effect mechanism exists in the human, rat, and rabbit embryos, we made a comparative study of embryonic cardiomyocytes from all three species. less thanbrgreater than less thanbrgreater thanPatch-clamp and quantitative-mRNA measurements of K-r and slowly activating K (K-s) channels were performed on human, rat, and rabbit primary cardiomyocytes and cardiac samples from different embryo-foetal stages. The K-r channel was present when the heart started to beat in all species, but was, in contrast to human and rabbit, lost in rats in late organogenesis. The specific K-r-channel blocker E-4031 prolonged the action potential in a species- and development-dependent fashion, consistent with the observed K-r-channel expression pattern and reported sensitive periods of developmental toxicity. E-4031 also increased the QT interval and induced 2:1 atrio-ventricular block in multi-electrode array electrographic recordings of rat embryos. The K-s channel was expressed in human and rat throughout the embryo-foetal period but not in rabbit. less thanbrgreater than less thanbrgreater thanThis first comparison of mRNA expression, potassium currents, and action-potential characteristics, with and without a specific K-r-channel blocker in human, rat, and rabbit embryos provides evidence of K-r-channel inhibition as a common mechanism for embryonic malformations and death.
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| 5. |
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| 6. |
- Almström, Peter, 1972, et al.
(författare)
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Achieving Sustainable Production through Increased Utilization of Production Resources
- 2011
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Ingår i: Proceedings of the 4th Swedish Production Symposium, SPS11, Lund, May 3-5, 2011. ; , s. 398-406
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Konferensbidrag (refereegranskat)abstract
- There seems to be a quite divergent view on sustainable production, mainly based on the perspective applied. From a global perspective, every kind of material consumption and growth is basically unwanted and should be minimized. This reflects in economic sustainability parameters that point towards producing as little as possible and socialparameters pointing at eliminating abuse of human rights etc. On the other hand, international summits on sustainability have stated that it is a human right to have a certain standard of living, which implies increase in production but with less resource consumption. This global perspective is however not very helpful when focusing on more local level, for example Swedish manufacturing industry. To achieve a long-term jobsecurity the manufacturing companies need to be long-term prosperous. Further, to be able to maintain profitability levels, manufacturing companies need to continuouslyincrease productivity. Utilization deals with using production equipment in a cost efficient way and this article will highlight how utilization affects different aspects of sustainable production, the link between utilization and productivity, as well as practical considerations when improving utilization in manufacturing industry.
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| 7. |
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| 8. |
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| 9. |
- Andersson, Carin, et al.
(författare)
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A chemometrical approach to study interactions between ethynylestradiol and an AhR-agonist in stickleback (Gasterosteus aculeatus)
- 2010
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Ingår i: Journal of Chemometrics. - : Wiley. - 0886-9383 .- 1099-128X. ; 24:11-12, s. 768-778
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Tidskriftsartikel (refereegranskat)abstract
- Quantifiable responses in fish, such as induction of certain proteins, can be used as indicators of chemical contamination of waterways. In order to evaluate differences in ethoxyresorufin-O-deethylase (EROD) induction capacity of the gill and the liver and effects on organs and biomarker proteins, e.g. gill and liver EROD, hepatosomatic index (HSI), nephrosomatic index (NSI), gonadosomatic index (GSI), spiggin, vitellogenin and sperm motility were analysed in male three-spined sticklebacks (Gasterosteus aculeatus) exposed for 21 days to β-naphthoflavone (βNF) alone (Exp 1) or in combination with 17α-ethynylestradiol (EE2) (Exp 2). The sperm motility variables were studied using computer-assisted sperm analysis (CASA). Exp 1: Gill EROD activity was significantly induced in fish exposed to ≥1.2 µg/l and hepatic EROD activity in fish exposed to ≥6 µg/l. No significant effect of ßNF on the production of spiggin or vitellogenin or on sperm variables was found. Exp 2: A significant additative effect of EE2 + βNF was shown for gill EROD. A significant antagonistic effect of the two compounds was found on NSI where an increased EE2 concentration led to an increase in NSI while an increased concentration of βNF led to a decreased NSI. Interestingly, the results showed that exposure to intermediate concentrations of EE2 and ßNF led to a significant increase in the sperm variables. In the aquatic environment mixtures of numerous chemicals with oestrogenic activity are present, so if the capacity to induce gill EROD activity is a general property of oestrogen-acting chemicals, our findings are important.
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| 10. |
- Andersson, Carin, et al.
(författare)
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Combining Overall equipment Efficiency (OEE) and productivity measures as drivers for production improvements
- 2011
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Ingår i: ; , s. 20-29
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Konferensbidrag (refereegranskat)abstract
- To compete on a globalized market companies need to constantly improve the performance in their manufacturing systems. Production performance measures can be used for different purposes, by practitioners they are commonly used for follow-up and reporting purposes. Two of the most commonly used performance measures are Overall Equipment Efficiency (OEE) and productivity. Between these two productivity exhibits the far most variety in definition. Even if OEE and productivity are strongly affected by improvement work, they are seldom used to drive the improvement efforts. The purpose of this paper is to present definitions of productivity suitable as improvement drivers, and to discuss the need for a combined set of performance measures to drive productivity improvements. Finally some experiences from industrial improvement work are viewed.
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| 11. |
- Andersson, Carin.E, 1965-, et al.
(författare)
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A Master Program in Project Management : Experiences from combining hard and soft skills
- 2011
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Ingår i: Nordic Academy of Management (NFF) 2011 Conference.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Project management skills are needed in a growing number of areas, all with specific requirements regarding technical and social competencies. Still, the majority of project management training is focusing on technical tools and techniques, emphasized in standards suggested by global professional project management associations. Uncertainties and unique social settings require a managerial approach different from the linear, rational and analytical view of the world provided by international standards such as the PMBOK Guide. A new approach to project management education is needed that deals with the complexity of today’s project environments. This paper describes a one year master program in project management at the KarlstadUniversity in Sweden. The program is general and focuses on issues regardless of business area or project type, and mix both technical and social skills. The program was initiated in 2002 and more than 200 students have until today been part of the program. In addition to the mandatory courses in the program, several students have, on voluntary basis, passed the IPMA D-level certification. The paper also presents the results from two different types of evaluations showing that the majority of the students have great use of their education in their current employment.Keywords: project management education; project management knowledge; soft skills; hard skills; pedagogic
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| 12. |
- Andersson, Carin E., 1965-, et al.
(författare)
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A Master Program in Project Management : Experiences from combining hard and soft skills
- 2011
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Ingår i: Nordic Academy of Management conference 2011.
-
Konferensbidrag (refereegranskat)abstract
- Project management skills are needed in a growing number of areas, all with specific requirements regarding technical and social competencies. Still, the majority of project management training is focusing on technical tools and techniques, emphasized in standards suggested by global professional project management associations. Uncertainties and unique social settings require a managerial approach different from the linear, rational and analytical view of the world provided by international standards such as the PMBOK Guide. A new approach to project management education is needed that deals with the complexity of today’s project environments. This paper describes a one year master program in project management at theKarlstadUniversityinSweden. The program is general and focuses on issues regardless of business area or project type, and mix both technical and social skills. The program was initiated in 2002 and more than 200 students have until today been part of the program. In addition to the mandatory courses in the program, several students have, on voluntary basis, passed the IPMA D-level certification. The paper also presents the results from two different types of evaluations showing that the majority of the students have great use of their education in their current employment.
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| 13. |
- Andersson, Carin.E, 1965-
(författare)
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The Project Manager at Work
- 2012
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Ingår i: Makt, Myter och Motstridigheter. - : Karlstads universitet. ; , s. 1-15
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- In the literature there is a common belief that project management is a general theory that is mainlyabout techniques and/or tools used for planning, budgeting, and control. This view has lately beenquestioned due to the fact that it does not give a complete picture of what a project manager actuallydoes in their daily work. By including other skills, such as, skills for communication, team building,and leadership, a more complete picture of the project management role may be provided. Projectmanagement research needs more empirical data from project managers about what their role as projectmanager actually means. The purpose of this study is to investigate what it means to work as a projectmanager in small and medium sized organizations. Empirical data is planned to be gathered (in thecounty of Värmland, Sweden) from May through October 2012, using semi-structured interviews andparticipant observations of project managers working in a multi-project management environment.Three overlapping analyzes techniques will be used to analyze the gathered data: thematic analysis,grounded theory, and narrative analysis. By using these techniques, hopefully this article will expand theknowledge and the understanding what a project manager actually does in their daily work.
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| 14. |
- Andersson, Carin, et al.
(författare)
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Grinding or shaving - economic decision support in the production of gears
- 2014
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Ingår i: ; , s. 1-8
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Konferensbidrag (refereegranskat)abstract
- This paper describes a case study at an automotive company with the purpose ov developing an economically based decision support tool, for strategic decision about wheather to chose grinding or shaving as a finishing method in gear manufacturing. In the study different cost models are compared regarding input parameters in alignment with the required input data required to make a decision. With the performance driven cost model used during the analysis, shaving was shown to be the most cost efficient finishing method.
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| 15. |
- Andersson, Carin, et al.
(författare)
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Impact of humic substances on EROD activity in gill and liver of three-spined sticklebacks (Gasterosteus aculeatus)
- 2010
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Ingår i: Chemosphere. - : Elsevier BV. - 0045-6535 .- 1879-1298. ; 81:2, s. 156-160
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Tidskriftsartikel (refereegranskat)abstract
- Humic substances (HS) are ubiquitous in the environment and have been found to influence physiological functions of aquatic organisms. In the present study, three-spined sticklebacks (Gasterosteus aculeatus) were exposed to HS of different origins to evaluate effects on the 7-ethoxyresorufin O-deethylase (EROD) activity catalyzed by cytochrome P4501A (CYP1A) in the liver and the gill. To that end, three-spined sticklebacks were exposed for 48 h to different concentrations of synthetic humic acid (AHA), Nordic reservoir natural organic matter (N.R.-NOM) and water from six lakes with different concentrations of HS. EROD activity was significantly induced (3-6-fold) in the gills of fish exposed to water from all lakes except the lake with the lowest concentration of HS. All tested concentrations of AHA and N.R.-NOM significantly induced gill EROD activity and the induction was dose-dependent. AHA, but neither N.R.-NOM nor lake water, induced EROD activity in the liver. In addition, fish were exposed to the potent CYP1A inducers benzo(a)pyrene (BaP) and PCB126 in combination with AHA. Presence of AHA had no significant effect on EROD induction by BaP or PCB126. The components in HS responsible for EROD induction remain to be identified. Our finding that HS of both natural and synthetic origin induce EROD activity in the gill is of significance for the interpretation of biomonitoring data on EROD activity as well as for the choice of suitable reference waters.
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| 16. |
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| 17. |
- Andersson, Carin, et al.
(författare)
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Managing Production Performance with Overall Equipment Efficiency (OEE) - Implementation Issues and Common Pitfalls
- 2011
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Ingår i: Proceedings of the 44th Conference on Manufacturing Systems (CIRP). - Wisconsin, US.
-
Konferensbidrag (refereegranskat)abstract
- In the current global competitive environment it is of immense importance for manufacturing companies tokeep track of, and improve the production performance of their production systems. One of the most widelyused performance measures is OEE, a powerful tool for production development if used correctly. Based ona theoretical analysis and a case study within a manufacturing company in the automotive industrychallenges associated with the implementation of OEE are identified and analyzed. Furthermore, the paperpresents conclusions of how to utilize the OEE measure for efficient management of improvement inproduction performance.
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| 18. |
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| 19. |
- Andersson, Carin, et al.
(författare)
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Manufacturing costs as a decisionsupport in production developoment and relocation issues - a case study at a supplier to the automotive industry
- 2014
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Ingår i: ; , s. 1-10
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Konferensbidrag (refereegranskat)abstract
- This paper will present a case study at a Swedish subcontractor, were a performance driven manufacturing cost model is used to analyse different production development scenarios in relation to sourcing. The result shows that production performance in terms of downtime, speed rate and quality losses will have a significant impact on manufacturing costs. The cost model was used to obtain cost scenarios for different offshoring alternatives serving as a decision support for the company management. Based on these scenarios they decided not to offshore production, instead they realized the potential of developing the Swedish site according to the proposed scenario.
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| 20. |
- Andersson, Carin, et al.
(författare)
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Modeling of maintenance costs
- 2011
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Konferensbidrag (refereegranskat)abstract
- Abstract in Undetermined Increased global competition demands for increased manufacturing costs awareness. Maintenance activities and strategies have been studied extensively, but few studies discuss maintenance costs. This paper presents a model for calculating performance-driven manufacturing costs (in currency/piece), including parameters for determining the maintenance costs in relation to the total manufacturing costs. This study focus on developing an existing manufacturing part cost model involving parameters driving maintenance costs. A proposal of the allocation of different maintenance activities to different costs parameters is discussed together with the utilization of the model in an industrial case study.
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| 21. |
- Andersson, Carin
(författare)
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Övervakning av grundvatten i Jönköpings län 2005-2008
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- SammanfattningGrundvattnet har stor betydelse för naturen eftersom det försörjer sjöar, vattendrag, våtmarkeroch källor med vatten. Det förser också många av länets invånare med dricksvatten.Det är därför nödvändigt att grundvattnet är av god kvalitet och att negativ miljöpåverkanmotverkas. För att följa eventuella förändringar i grundvattnets kvalitet har Länsstyrelsen iJönköpings län genomfört en undersökning i 25 vattentäkter och fem källor. Konduktivitet,pH, ammonium, nitrat, sulfat och klorid samt metaller analyserades i vattentäkterna ochkällorna. Dessutom analyserades råvatten för bekämpningsmedel och klorerade lösningsmedelvid några grundvattentäkter. För att kunna bedöma tillstånd och påverkan har Sverigesgeologiska undersöknings föreskrifter om statusklassificering och miljökvalitetsnormerför grundvatten och Naturvårdsverkets Bedömningsgrunder för grundvatten använts. Idenna rapport redovisas resultat från provtagningar i de 25 grundvattentäkterna 2005-2008.För att utläsa trender har även äldre resultat använts som underlag.Enligt naturvårdsverkets bedömningsgrunder anses alkaliniteten vara måttlig - mycket lågvid 70 % av vattentäkterna vilket kan innebära att alkaliniteten är otillräcklig för att i framtidenge en stabil och acceptabel pH-nivå i områden med hög syradeposition. Nitrathaltenvisar en måttlig till stark påverkan i 76 % av vattentäkterna. Klorid-halterna bedöms somlåga eller mycket låga i samtliga vattentäkter och källor.Sammanfattningen i tabell 2 visar medelvärden för de undersökta parametrarna i källornaoch vattentäkterna bedömda efter SGUs föreskrifter. Ingen koncentration översteg riktvärdetför grundvatten vare sig i källorna eller i vattentäkterna. Ammonium-, klorid- och sulfathalternaöversteg referensvärdet i ett fåtal av täkterna och ammoniumhalten översteg referensvärdeti två av källorna. Kvävehalten är i tabell 1 och 2 utryckt som nitrat, NO3, föratt kunna jämföra med värdena i SGUs föreskrifter. Nitrathalten överskrider utgångspunktför att vända trend vid fyra vattentäkter. Sju vattentäkter och en källa har kvävehalter överreferensvärdet. Metallhalterna i vattentäkterna och källorna var generellt sett låga. 2,6-diklorbensamid (BAM) var det enda bekämpningsmedel som detekterades vid fem av vattentäkterna.Baserat på resultaten i denna rapport har fem vattentäkter otillfredsställandestatus (på grund av BAM), tre vattentäkter är ”at risk” (överstiger värdet för utgångspunktför att vända trend, tabell 5) övriga har god status enligt vattendirektivet. Den tydligastetrenden som kunde påvisas var att nitrat- och sulfathalterna i vattentäkterna minskar (tabell 1).Tabell 1.Trendbedömning av konduktivitet (Kond), pH, Alkalinitet (Alk), ammonium (NH4N),nitrat, klorid och sulfat i vattentäkterna (VT).KondmS/mpH Alkmg/lNH4Nmg/lNitratmg/lKloridmg/lSulfatmg/lAntal VT där trend kan bedömmas 8 18 17 7 12 13 12Antal VT där ingen trend kan påvisas 6 12 13 7 5 10 6Antal VT där en ökande trend kan påvisas 0 3 3 0 1 0 0Antal VT där en minskade trend kan påvisas 2 3 1 0 6 3 6ÖVERVAKNING AV GRUNDVATTEN I JÖNKÖPINGS LÄN 2005-20085Tabell 2.Medelvärden 2005-2008 för konduktivitet (kond), pH, alkalinitet (alk), ammonium (NH4), nitrat, klorid, sulfat, försurningsbelastning (förs.), arsenik (AS), kadmium (CD),kobolt (CO), krom (CR), kvicksilver (HG), nickel (NI), bly (PB) och zink (ZN). Gult = halten överstiger referensvärdet, orange = värdet överstiger utgångspunkt för att vändatrend, rött = värdet överstiger riktvärdet för grundvatten. x = ej analyserat / halterna överstiger ej detektionsgränserna.*Baseras endast på en mätning. **Vid provtagningarnai Malmbäck (2 st 2008) uppmättes en hög koncentration av bly (15.4 μg/l ) och en låg koncentration (0.07 μg/lVattentäkt KondmS/mpH Alkmg/lNH4mg/lNitratmg/lKloridmg/lSulfatmg/lFörs. ASμg/lCDμg/lCOμg/lCUg/lHGμg/lNIμg/lPBμg/lZNμg/lBAMμg/lStatus vattentäktAnneberg 22.9 6.95 63.3 0.005 9 16.00 15.00 3.3 0.15 0.011 0.03 4.5 0.001 0.8 0.1 10.3 0.33 OtillfredställandeBaskarp X 6.78 X 0.050 0.3 5.30 6.50 X 0.15 0.003 0.004 0.7 0.001 0.1 0.1 6.1 x GodBor 8.1 6.3 22.0 0.035 2.2 7.8 7.20 1.2 0.11 0.040 1.13 7.7 0.026 4.8 0.3 24.4 x GodBottnaryd 8.3 6.20 23.5 0.010 2.0 5.60 8.10 1.2 0.08 0.002 0.01 0.9 0.001 0.3 0.1 5.1 x GodBroaryd 24.5 7.93 89.0 0.005 24.8 9.48 8.38 4.8 0.04 0.034 0.03 3.9 0.001 1.0 0.1 4.1 x RiskBäckshult 14.8 6.64 23.3 0.005 0.3 6.80 6.10 1.1 0.04 0.010 0.05 3.7 0.018 0.4 0.3 2.6 x GodFurusjö X 6.35 X 0.010 3.3 6.00 7.60 X 0.16 0.036 0.03 7.6 0.001 0.2 0.4 10.3 x GodGrimstorp 6.1 6.30 13.3 0.005 2.2 5.20 6.90 0.7 0.03 0.008 0.05 42.7 0.001 1.8 0.2 4.1 x GodHjältevad 6.7 6.50 20.0 0.005 0.3 4.57 7.37 1.1 0.09 0.008 0.04 5.9 0.002 0.2 0.1 4.8 x GodHolsby 16.0 6.40 46.0 0.050 15 7.55 9.70 2.5 0.03 0.007 0.06 8.0 0.002 0.2 0.1 3.1 x GodHorda X 5.69 5.4 0.005 7.5 7.2 11,00 0.2 0.04 0.044 1.41 5.0 0.026 2.9 0.2 11.5 x GodJularp 35.3 7.68 165.0 0.005 7 19.00 24.00 9.3 0.31 0.008 0.02 3.4 0.001 0.3 0.3 5.5 x GodKorsberga 10.0 6.55 28.5 0.038 2.3 6.90 8.90 1.5 0.11 0.010 0.08 4.1 0.001 0.2 0.2 24.4 x GodLandsbro 24.5 6.65 61.5 0.038 22 15.50 22.00 3.3 0.08 0.007 0.04 1.6 0.001 0.8 0.1 3.8 x RiskLanna X 5.83 5.4 0.005 0.2 6.8 8.5 0.3 0.04 0.027 0.04 3.9 0.026 0.7 0.2 14.2 x GodLekeryd 19.8 6.60 60.6 0.010 5.3 15.50 13.00 3.0 0.18 0.002 0.01 2.5 0.001 1.3 0.2 3.2 x GodLjusseveka X 7.40 X 0.071 X 13.50 21.00 X 0.41 0.015 0.92 0.1 0.001 2.8 0.03 3.6 0.11 OtillfredställandeMalmbäck 8.0 6.67 30.0 0.005 1.0 5.70 9.60 1.9 0.04 0.023 0.03 5.1 0.002 1.8 7.7** 32.8 0.45 OtillfredställandeN.Unnaryd 15.3 6.05 27.5 0.010 30.5 6.10 11.00 1.5 0.52 0.011 0.01 2.7 0.001 0.7 0.1 5.2 x RiskSkede 20.0 6.55 51.0 0.050 16.5 15.50 9.00 2.7 0.11 0.018 0.14 7.9 0.003 1.2 0.7 9.6 x GodStarhult 19.9 6.70 36.1 0.005 2.7 X X 1.9 0.09 0.003 0.02 1.4 0.002 0.4 0.8 5.3 x GodSunnerby 14.9 6.27 21.2 0.005 10 X X 1.1 0.11 0.039 0.14 9.1 0.002 0.5 1.2 21.2 x GodSvenarum X 6.10 12.0 0.005 4.8 6.90 8.70 0.6 0.06 0.018 0.02 2.9 0.026 1.4 0.1 8.6 0.37 OtillfredställandeViebäck X X X X X X X X 0.11 0.008 0.19 15.7 0.002 1.07 0.4 6.3 x GodVireda 60.1* 7.70 207.5 0.008 23 22.00* 75.00* 10.8 0.20 0.049 0.02 3.5 0.001 0.7 0.1 2.4 0.76 OtillfredställandeGlörje källa 23.66 7.7 127 0.064 0.79 7.37 6.70 6.7 1.14 0.001 0.10 0.1 0.001 0.1 0.01 1.2 x GodGränseryd 14.95 7.3 56.6 0.006 3.1 6.65 10.5 3.0 0.11 0.007 0.01 0.2 0.002 0.1 0.01 1.6 x GodSkogshyltan 4.8 6.1 5.33 0.066 0.95 5.21 6.82 0.3 0.03 0.001 0.01 0.1 0.001 0.1 0.04 1.1 x GodSunneränga 17.35 7.4 65 0.023 4.8 7.3 13.35 3.5 0.23 0.005 0.01 0.3 0.002 0.1 0.005 1.4 x GodTaberg 2 33.5 8.35 115.3 0.022 2.6 7.5 19.35 6.1 0.04 0.002 0.20 0.8 0.001 1.9 0.09 0.7 x GodÖVERVAKNING AV GRUNDVATTEN I JÖNKÖPINGS LÄN 2005-20086
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| 22. |
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| 23. |
- Andersson, Lena, 1965-, et al.
(författare)
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Associations between general self efficacy, barriers to care and self-reported mental illness—a population-based study
- 2010
-
Ingår i: European Journal of Public Health. - Oxford : Oxford University Press. - 1101-1262 .- 1464-360X. ; 20:Suppl. 1, s. 69-69
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundMental illness is an increasing health problem globally. However, many individuals do not seek health care although evidence-based care is available. Research has shown that self efficacy is associated with various health outcomes and it is of importance to investigate if it also is associated mental illness. Early detection promotes recovery and decreases suicide risk.AimThe aim of this study is to investigate whether low levels of self efficacy is associated with a higher degree of mental illness and whether level of self-efficacy influence health seeking behaviour.MethodsThis is a cross-sectional study based on data from the Health Assets study, with data collected in 2008 in West Sweden. The study population is a randomly selected population sample of 4027 individuals, aged 18–65 years. Data collection was done by a postal questionnaire and the response rate was 50.4%. Bi-and multivariate analyses were employed to investigate associations and results were stratified on sex, age, civil status, education and social support.ResultsA total number of 1361 (36%) out of 3811 individuals answered ‘Yes’ on the question ‘Have you ever felt so mentally ill that you had (felt a need) to seek care’. A total of 33% of the women answering yes were found in the lowest quartile of the general self efficacy scale, 20% in the highest quartile. Corresponding figures for men were 30 and 23% respectively. The most common reason stated for not seeking health care was a belief that the mental health problem would disappear by itself. Others reasons mentioned were beliefs that health care would not help, they did not know were to go or they felt ashamed for showing others they suffered from mental illness.ConclusionMental illness is a serious health problem and access to care needs to be improved. Health promotion should also include individual traits/characteristics such as self efficacy and health-seeking behaviour.
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| 24. |
- Andersson, Lena, 1965, et al.
(författare)
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General Self-efficacy and Its Relationship to Self-reported Mental Illness and Barriers to Care: A General Population Study
- 2014
-
Ingår i: Community mental health journal. - : Springer Science and Business Media LLC. - 0010-3853 .- 1573-2789. ; 50:6, s. 721-728
-
Tidskriftsartikel (refereegranskat)abstract
- Given the prevalence of mental illness worldwide, it is important to better understand the dynamics of mental health help-seeking behavior to improve access to care. The aim of this study was to investigate if general self-efficacy (GSE) was associated with self-reported mental illness and help-seeking behavior and barriers to care in a randomized population. This study utilized a mailed questionnaire completed by 3,981 persons aged 19-64 years who resided in Western Sweden. GSE was measured and logistic regression models calculated, controlling for various sociodemographic variables. Results showed that 25 % of men and 43 % of women reported a lifetime prevalence of mental illness that they felt could have benefitted from treatment. Of those, 37 % of the men and 27 % of the women reported barriers to care. Men and women with low GSE were more likely to suffer from mental illness compared with persons high in GSE, but GSE did not enhance help-seeking behavior or perceived barriers to care. The most prevalent barriers to care for both sexes were beliefs that the illness will pass by itself, doubt whether treatment works, lack of knowledge of where to go and feelings of shame. Overall, GSE scores did not differ among those who experienced various barriers to care with the exception of two barriers only among women.
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| 25. |
- Dahlberg, Lena, 1970-, et al.
(författare)
-
Predictors of loneliness among older women and men in Sweden : A national longitudinal study
- 2014
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: To examine the extent to which older women and men (70+) report feelings of loneliness with a focus on: a) changes in reported loneliness as people age, and b) which factors predict loneliness.Methods: Data from the 2004 and 2011 waves of SWEOLD, a longitudinal national survey study, was used. The prediction of loneliness in 2011 by data collected in 2004 was examined in three logistic regression models for the total sample (n=587), for women and for men.Results: Older people moved in and out of frequent loneliness over time, but there was a general increase in loneliness as they aged. Recent widowhood and depression increment were associated with loneliness in both women and men. Loneliness, widowhood, depression and mobility problems measured in 2004 predicted loneliness uniquely in women in 2011; whereas low level of education and social contact reduction predicted loneliness uniquely in men.Discussion: Loneliness is not always a stable condition, demonstrating the importance of longitudinal research. Gender differences in incidence and predictors make it important to look at women and men separately both when researching loneliness and when targeting interventions to prevent or reduce loneliness in older people.
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| 26. |
- Hensing, Gunnel, 1956-, et al.
(författare)
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The impact of health problems in sickness absence might be underestimated in Sweden
- 2010
-
Ingår i: European Journal of Public Health. - Oxford : Oxford University Press. - 1101-1262 .- 1464-360X. ; 20:Suppl. 1, s. 228-228
-
Tidskriftsartikel (refereegranskat)abstract
- Changes in the welfare systems including the sickness insurance scheme are ongoing in several countries, and better knowledge on the extent of health problems in sickness absence seems needed. The overall aim of this cross sectional study was to assess and compare self-rated health, common symptoms and mental well-being in two samples of incident sick-leave cases with the general population. The study was performed in Sweden, 2008, and three samples of individuals aged 19–64 years were selected. The final study populations consisted of 3310 consecutive new employer reported sick-leave cases, 498 consecutive new self-reported sick-leave cases and 4027 individuals from a random general population sample. A mailed questionnaire was distributed. Validated questions and instruments on health and demographic data was analysed in bivariate and multivariate analyses. Poor self-rated health, high levels of symptoms and low mental well-being was reported by a significantly higher proportion in the two sick-leave samples compared with the general population. In logistic regressions with the generalpopulation as reference we adjusted for age, income, occupational class and current sick-leave. The fully adjusted OR for poor self-rated health, high levels of symptoms and low mental well-being respectively were 1.54 (95% confidence intervals 1.24–1.91), 1.95 (1.54–2.48) and 1.41 (1.11–1.79) among the employer reported male sick-leave cases and 1.94 (1.34–2.82), 1.76 (1.14–2.70) and 2.11 (1.40–3.17) among self reported male sick-leave cases. Corresponding figures for women were 1.80 (1.56–2.08), 1.42 (1.22–1.66) and 1.21 (1.03–1.43) and 2.10 (1.60–2.75), 1.97 (1.1–2.57) and 1.78 (1.35–2.36). Differences in health problems between the groups remained significant in the fully adjusted model. We conclude that sick-listed individuals have a higher burden of illness also after control for current sick leave than the general population. Consequence analyses of more rigorous legislation and increased demands need to take this into account.
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| 27. |
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| 28. |
- Jönsson, Mathias, et al.
(författare)
-
Dynamic Manufacturing Costs - Describing the Dynamic Behavior of Downtimes from a Cost Perspective
- 2011
-
Konferensbidrag (refereegranskat)abstract
- Downtimes in a manufacturing cell, line or individual machines are characterized by a stochastic behavior that their frequency and their duration display. A method is presented here for analyzing this dynamic behavior from a cost perspective. An important element of the method is statistical analysis of downtimes, including empirical distribution functions pertaining to downtimes of specific types. For demonstrating this, use is made here of genuine downtime data obtained from the Swedish company Alfa Laval.
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| 29. |
- Jönsson, Mathias, et al.
(författare)
-
Relations between Volume Flexibility and Part Cost in Assembly Lines
- 2011
-
Ingår i: Robotics and Computer-Integrated Manufacturing. - : Elsevier BV. - 0736-5845. ; 27, s. 669-673
-
Konferensbidrag (refereegranskat)abstract
- This paper presents a strategy for achieving volume flexibility in assembly lines, so that varying production demands can be met. The strategy involves providing assembly lines inherent cycle-time flexibility, through creating the possibility for operators to handle multiple work stations. A basic part-cost model serves as a basis for analyzing the cost effects of different staffing alternatives, its taking account of different performance parameters and numbers of operators. Use of the part-cost model is illustrated by analyzing two specific cases differing in the number of operators assigned to the assembly line, the operators being partly permanent and partly temporary workers. It is shown how the costs are affected by the production performance of the work force in question, temporary operators being expected to display a somewhat lower level of performance than permanent workers.
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| 30. |
- Karlsson, Anna-Carin, et al.
(författare)
-
Genotype at the PMEL17 locus affects social and explorative behaviour in chickens
- 2010
-
Ingår i: British Poultry Science. - : Informa UK Limited. - 0007-1668 .- 1466-1799. ; 51:2, s. 170-177
-
Tidskriftsartikel (refereegranskat)abstract
- 1. We studied behaviour and brain gene expression in homozygous PMEL17 genotypes, using chickens originating from an advanced White Leghorn x red junglefowl intercross. The behavioural studies consisted of three social and one explorative behaviour test. There were significant differences between the genotypes in both social and explorative behaviour. 2. Gene expression studies showed no PMEL17 expression in brain, so the genotype differences must depend on extra-neural gene expression or expression during embryonic development. However, linkage or spurious family effects (genetic drift) can not be excluded. 3. The study strongly suggests a correlated effect between plumage colour and behaviour, and we conclude that PMEL17 may have a pleiotropic effect on social and explorative behaviour in chickens.
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| 31. |
- Kjellström, Sofia, et al.
(författare)
-
Högskoleutbildning för hållbar utveckling : En kartläggning vid Jönköpings högskola
- 2014
-
Rapport (refereegranskat)abstract
- Högre utbildning i Sverige ska enligt Högskolelagens paragraf 5 främja hållbar utveckling (Svensk högskolelag 1992:1434). Hållbar utveckling har definierats som en ”utveckling som tillfredsställer dagens behov utan att kompromissa med kommande generationers möjligheter att tillfredsställa sina behov” (United Nations, 1987). Hållbar utveckling innebär ansvarstagande för kommande generationer och utsträcker sig globalt. När ekologiska gränser överskrids kan människors möjligheter till goda liv undermineras.Våren 2013 fick författarna till denna rapport pedagogiska medel för att kartlägga undervisning om och för hållbar utveckling vid Högskolan i Jönköping. Syftet var att undersöka omfattningen av hållbar utveckling i undervisningen på strategisk nivå, programnivå, kursplanenivå och undervisningsnivå. Ett ytterligare syfte var att utifrån en analys av resultatet föreslå åtgärder som kan stärka högskolan i arbetet med utbildning för hållbar utveckling. Kartläggningen började med ett liknande upplägg på samtliga fackhögskolor men fick också anpassas till förutsättningarna på varje skola.Resultatet av kartläggningen visar skillnader mellan de olika fackhögskolorna i hur hållbarhetsfrågor inkluderas i undervisningen. Allt från att ingen kursplan innehållande hållbar utveckling identifierats till att undervisningen måste inkludera ett visst antal högskolepoäng. Kartläggningen visar också att tolkningarna av hållbar utveckling och undervisning för/om hållbar utveckling varierar mellan enskilda lärare.På Hälsohögskolan är området osynligt i kursplaner och inkluderandet av hållbar utveckling i undervisningen bygger på enskilda lärares engagemang. På Högskolan för lärande och kommunikation skiljer det sig mellan olika program där inslaget av hållbar utveckling varierar från att behandlas ingående till att inte synas explicit. Internationella handelshögskolan har prioriterat arbete med etiska och sociala frågor i utbildning och ekologisk hållbarhet är mindre framträdande. Det finns dock kurser som inkluderar ekologiska, sociala och ekonomiska dimensioner. Jönköpings tekniska högskola har en genomarbetad strategi för hur hållbar utveckling skall finnas med i utbildningarna. Varje utbildning skall integrera minst sex högskolepoäng.Sammantaget konstateras fortsatta förbättringsmöjligheter för Högskolan i Jönköping på strategisk nivå, programnivå, kursplanenivå och undervisningsnivå. Skillnader mellan bolagen, programmen och kurserna kan utnyttjas som en tillgång i förbättringsarbetet. En framgångsfaktor verkar vara att som JTH ha med hållbar utveckling i strategidokument med tydliga mål på omfattning samt att kursplaner innehåller moment som förklarar hur hållbar utveckling avhandlas. Vi rekommenderar också att tydliga mål sätts upp på varje fackhögskola och att lärare ges tid och resurser att ta del av de verktygslådor för hållbar utveckling som finns (en lista på sådana finns i rapporten). Ytterligare förslag på hur implementering kan stimuleras ges också, så som skapande av nätverk, införlivande av ämnet i högskolepedagogiska kurser samt högskolegemensamma temadagar för studenter.
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| 32. |
- Linnersjö, Anette, et al.
(författare)
-
Low mortality and myocardial infarction incidence among flying personnel during working career and beyond
- 2011
-
Ingår i: Scandinavian Journal of Work, Environment and Health. - : Scandinavian Journal of Work, Environment and Health. - 0355-3140 .- 1795-990X. ; 37:3, s. 219-226
-
Tidskriftsartikel (refereegranskat)abstract
- Objective The aim of this study was to evaluate mortality and acute myocardial infarction (AM!) incidence among commercial and military flying personnel in Sweden. Methods Flying personnel, employed at the Swedish part of Scandinavian Airlines and/or the Swedish Armed Forces at some point between 1957-1994, were included. The cohort was followed regarding mortality and AMI incidence using national registers of hospital discharges and deaths. The observed mortality and AMI incidence was compared with the expected rate in the general Swedish population through standardized mortality ratios (SMR) and standardized incidence ratios (SIR) taking age, gender, and calendar year into account. Results Swedish flying personnel, except male cabin crew, had a lower-than-expected all-cause mortality (SMR ranging from 0.57 among female cabin crew to 0.79 among navigators and mechanics; male cabin crew 0.89) and cardiovascular mortality (SMR from 0.31 among female cabin crew to 0.79 among navigators and mechanics). We observed an elevated mortality in aircraft accidents (SMR ranging from 23.87 among commercial pilots to 165.68 among military pilots). Male cabin attendants had a higher-than-expected mortality for alcohol-related death causes and acquired immunodeficiency syndrome (AIDS). AMI incidence was reduced in all groups and across the lifespan (SIR between 0.13 among female cabin crew and 0.61 among navigators and mechanics). Conclusions Swedish flying personnel have a low all-cause mortality. This is mostly due to a reduced cardiovascular mortality reflecting a low AMI incidence during the working life as well as after retirement.
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| 33. |
- Myrelid, Andreas, 1982-
(författare)
-
Essays on manufacturing-related management accounting
- 2013
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In general companies continuously have to improve their operations to be able to survive in the global competition. They have to be better in utilizing their resources today compared to what they were yesterday. The production systems have changed during the 20th century and factories today do not look like they did hundred years ago. Focus has moved from mass production towards flexibility. The changes in production philosophy have not been followed by a corresponding change in different supporting functions. Research shows that many companies still use accounting methods that have not been developed since the 1930s.The purpose of this licentiate thesis is to provide perspectives on some aspects concerning the relationship between manufacturing operations management and management accounting. This will increase the knowledge and understanding of how management accounting information supports manufacturing decision making.This thesis reports findings from four studies designed to investigate the informational relationship between management accounting and operations management in companies. Results from this research shows that there are many factors to consider when choosing and designing an appropriate management accounting system. Contextual factors include market, manufacturing strategy, technology, and organization. This thesis also reports on the difficulties of making theoretically sound methods work in practice.This thesis contributes with some explanatory aspects on the practical problem and investigates some potential ways forward concerning manufacturing-related management accounting.
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| 34. |
- Rabe, Hardis, et al.
(författare)
-
Higher proportions of circulating FOXP3+ and CTLA-4+ regulatory T cells are associated with lower fractions of memory CD4+ T cells in infants.
- 2011
-
Ingår i: Journal of leukocyte biology. - : Oxford University Press (OUP). - 1938-3673 .- 0741-5400. ; 90:6, s. 1133-40
-
Tidskriftsartikel (refereegranskat)abstract
- In adults, a majority of FOXP3(+) T(regs) expresses CTLA-4, and this costimulatory molecule is essential to control the expansion of other T cells. However, it remains to be investigated whether FOXP3(+) and/or CTLA-4(+) T(regs) are associated with the expression of memory markers and homing receptors on CD4(+) T cells. Thus, in a prospective newborn-infant cohort study, we examined the proportions of FOXP3(+) and CTLA-4(+) T(regs) within the CD4(+)CD25(+) T cell population and the fractions of CD4(+) T cells that expressed CD45RA, CD45RO, HLA-DR, α(4)β(7), CD62L, and CCR4 at several time-points during the first 3 years of life using flow cytometry. With the use of multivariate factor analysis, we found that a high proportion of FOXP3(+) or CTLA-4(+) T(regs) during the first 18 months of life was associated positively with the fraction of T cells that expressed a naïve phenotype (CD45RA and α(4)β(7)) and inversely related to the fraction of T cells that expressed a memory phenotype (CD45RO and CCR4) later in childhood. In conclusion, FOXP3(+) or CTLA-4(+) T(regs) may modulate CD4(+) T cell activation and homing receptor expression in children.
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| 35. |
- Rabe, Hardis, et al.
(författare)
-
Staphylococcus aureus convert neonatal conventional CD4(+) T cells into FOXP3(+) CD25(+) CD127(low) T cells via the PD-1/PD-L1 axis
- 2014
-
Ingår i: Immunology. - : Wiley. - 0019-2805 .- 1365-2567. ; 141:3, s. 467-481
-
Tidskriftsartikel (refereegranskat)abstract
- The gut microbiota provides an important stimulus for the induction of regulatory T (Treg) cells in mice, whether this applies to newborn children is unknown. In Swedish children, Staphylococcus aureus has become a common early colonizer of the gut. Here, we sought to study the effects of bacterial stimulation on neonatal CD4(+) T cells for the induction of CD25(+)CD127(low) Treg cells in vitro. The proportion of circulating CD25(+)CD127(low) Treg cells and their expression of FOXP3, Helios and CTLA-4 was examined in newborns and adults. To evaluate if commensal gut bacteria could induce Treg cells, CellTrace violet-stained non-Treg cells from cord or peripheral blood from adults were co-cultured with autologous CD25(+)CD127(low) Treg cells and remaining mononuclear cells and stimulated with S.aureus. Newborns had a significantly lower proportion of CD25(+)CD127(low) Treg cells than adults, but these cells were Helios(+) and CTLA-4(+) to a higher extent than in adults. FOXP3(+)CD25(+)CD127(low) T cells were induced mainly in neonatal CellTrace-stained non-Treg cells after stimulation with S.aureus. In cell cultures from adults, S.aureus induced CD25(+)CD127(low) T cells only if sorted naive CD45RA(+) non-Treg cells were used, but these cells expressed less FOXP3 than those induced from newborns. Sorted neonatal CD25(+)CD127(low) T cells from S.aureus-stimulated cultures were still suppressive. Finally, blocking PD-L1 during stimulation reduced the induction of FOXP3(+)CD25(+)CD127(low) T cells. These results suggest that newborns have a higher proportion of circulating thymically derived Helios(+) Treg cells than adults and that S.aureus possess an ability to convert neonatal conventional CD4(+) T cells into FOXP3(+)CD25(+) CD127(low) Treg cells via the PD-1/PD-L1 axis.
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| 36. |
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| 37. |
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| 38. |
- Ståhl, Jan-Eric, et al.
(författare)
-
Dynamic manufacturing costs — Describing the dynamic behavior of downtimes from a cost perspective
- 2012
-
Ingår i: CIRP Journal of Manufacturing Science and Technology. - 1755-5817. ; 5:4, s. 284-295
-
Tidskriftsartikel (refereegranskat)abstract
- Downtimes in a manufacturing cell, a production line or an individual machine are characterized by a complex statistical behavior that their frequency and duration display. The work reported here concerns likenesses and differences between various statistical distributions that apply to functional times (TBF) and downtimes (DT) in connection with different discrete manufacturing processes. The TBF and DT are viewed as varying over the whole production time for the batch. A method is presented for analyzing the dynamic behavior involved in terms of costs. An important element in this method is the statistical analysis of downtimes, making use of both empirical and theoretical distribution functions that apply to functioning times and downtimes of specific types. For demonstrating how the method is employed, use is made of real data obtained from the Swedish company Alfa Laval.
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| 39. |
- Svahn, Mattias, et al.
(författare)
-
Gear Tooth Surface Roughness of Helical Gears Manufactured by a Form Milling Cutter
- 2014
-
Ingår i: [Host publication title missing]. - 9781782421955 ; 1, s. 96-106
-
Konferensbidrag (refereegranskat)abstract
- Manufacturing involute gears using form grinding or form milling wheels are beneficial to hobs in some special cases, such as small scale production and, the obvious, manufacture of internal gears. To manufacture involute gears correctly the form wheel must be purpose designed, and in this paper the geometry of the form wheel is determined through inverse calculation. A mathematical model is presented where it is possible to determine the machined gear tooth surface in three-dimensions manufactured by this tool, taking the finite number of cutting edges into account. The model is validated by comparing calculated results with observed results of a gear manufactured by an indexable insert milling cutter.
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| 40. |
- Svahn, Mattias, et al.
(författare)
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The Influence of Tool Tolerances on the Gear Quality of a Gear Manufactured by an Indexable Insert Hob
- 2013
-
Ingår i: VDI-Berichte 2199.1-2. - 0083-5560. ; , s. 353-365
-
Konferensbidrag (refereegranskat)abstract
- Advances in gear hobbing are driven to give higher cutting speeds, longer tool life and higher feed rates. Recently, a new type of hob with carbide inserts has been introduced with benefits in all these conditions compared to regrindable high speed steel hobs. However, with this kind of hob, new challenges occur due to positional errors of the cutting edges when mounted on the tool. These errors introduce manufacturing errors on the gear teeth which have to be controlled. In this paper, the tooth quality of a gear manufactured by hobs with different quality classes is analysed using a simulation model in combination with Monte-Carlo methods. A statistical analysis of a commercial hob provides input to the Monte-Carlo model, where the axial and the radial deviations of these inserts are considered. Simulations are performed with different hob quality classes according to DIN 3968. The results from simulation are compared with experimental results of this actual hob at a gear manufacturer.
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| 41. |
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| 42. |
- Svahn, Mattias, et al.
(författare)
-
Tooth Deviations of an Involute Helical Gear Manufactured in a Simulated Hobbing Process with Introduced Errors
- 2012
-
Konferensbidrag (refereegranskat)abstract
- External involute helical gears are usually manufactured through hobbing, commonly with a subsequent grinding or skiving operation. One way towards the industrial pursuit of more competitive and sustainable manufacturing is to reduce the number of processes, while retaining functionality and quality. In the hobbing of gears, the manufacturing errors are most often connected to the tool and/or the fixture. These errors need to be kept within tight tolerances to achieve sufficient quality of a finished hobbed gear. It would therefore be of great interest to be able to predetermine the quality of a finished hobbed gear, based on tolerances of the manufacturing process. Thereby the motivation is to analyze the impact of these errors, on the tooth surface of a hobbed gear. In this paper the manufacturing process is simulated, using an analytical geometric mathematical model, to determine the geometry of the hobbed gear tooth flank in three dimensions. Various errors, linked to the manufacturing process, are introduced in the software implementation of the mathematical model. An experimental study was performed, with errors of same type and magnitude, to validate the simulation results. The simulation model allows determining the geometry and the quality of the gear tooth, prior to manufacturing, at any section over both profile and helix.
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| 43. |
- Windmark, Christina, et al.
(författare)
-
A Business Case Tool as Decision Support in Early Production Location Project Stages
- 2014
-
Ingår i: Proceedings of the 6th Swedish Production Symposium. - 9789198097412
-
Konferensbidrag (refereegranskat)abstract
- Globalisation makes companies enter the global market both in sale and production. Previous studies have shown that one of the main reasons for relocation and outsourcing is cost saving. There are also studies showing that companies today may benefit from a decision support model based on costs. This paper provides a business case tool to be used in the scoping phase where different location alternatives are to be roughly analysed for further investigation. The tool is to be used together with strategic analyses and more extensive risk analyses to make a solid information platform for decisions.
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| 44. |
- Windmark, Christina, et al.
(författare)
-
A cost model for determining an optimal automation level in discrete batch manufacturing
- 2012
-
Ingår i: 45th CIRP Conference on Manufacturing Systems 2012. - : Elsevier BV. - 2212-8271. - 9781627485128 ; 3, s. 73-78
-
Konferensbidrag (refereegranskat)abstract
- An economic model for determining the optimal automation level for discrete batch manufacturing is presented. The model describes how the costs of parts varies between manufacturing systems of different types at differing automation levels, the part costs often being highly dependent upon the automation level selected. The optimal automation level in a given case can be determined using a relative help variable, one expressing the ratio of the equipment costs to the sum of the salary and the equipment costs per hour. A case study is used for exemplifying use of the model, indicating what broad application it can have.
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| 45. |
- Windmark, Christina, et al.
(författare)
-
A production performance analysis regarding downtime and downtime pattern
- 2012
-
Konferensbidrag (refereegranskat)abstract
- In order to compete on the international market, companies today need to optimize their production continually. One way to achieve this is to minimize the frequency and length of downtime in the production. The downtimes in a particular manufacturing line were classified on the basis of what generated them; a production performance analysis was carried out, and then a cost model was applied to the results. After an initial study of all the products involved, five products were selected for more detailed analyses. Manufacturing costs were found to differ between products and also between batches of the same product. There appeared to be considerable potential for improvements
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| 46. |
- Windmark, Christina, et al.
(författare)
-
Business case as a decision support when relocating manufacturing
- 2012
-
Konferensbidrag (refereegranskat)abstract
- Companies are relocating in order to save cost and for strategic reason. In order to reveal in what extent company today use business case studies when making relocation decisions, an interview study was conducted. Throughout the interview study the following paper establish what cost different companies are taking in consideration when relocate and if those are calculated or estimated. The research started with the hypothesis that many relocation decisions are based on a limited set of parameters and that a fraction of these consists of cost parameters. The outcome will later on be used when developing an industrial decision support for relocation, making it applicable for the manufacturing industry of today. The interview results will show that different companies are taking different cost in consideration; only a few ones are consistent, making the future decision support quite extensive.
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| 47. |
- Windmark, Christina, et al.
(författare)
-
Costs of inbound logistics – Towards a decision support model for production system design
- 2013
-
Ingår i: Advances in Sustainable and Competitive Manufacturing Systems.. - Heidelberg : Springer International Publishing. ; , s. 1049-1061
-
Konferensbidrag (refereegranskat)abstract
- Global competition forces companies to constantly increase the efficiency in their production systems. One important factor affecting the production performance is the inbound materials handling system. When designing or relocating a manufacturing system, the cost of the material handling system is one of many things to take into consideration. In connection with on-going research a comprehensive decision support for production location, both work procedures and model and tools for strategic and economic analyses are developed. A case study was conducted, at a supplier to the heavy vehicle industry, in order to develop cost models for inbound logistics. The results were two cost models of different accuracy giving the cost per part, where the comprehensive model is taking the process and equipment into consideration. In addition, the study also revealed the proportion between inbound logistics costs and assembly costs at the company studied. The result in this article is part of the development of making models for calculating the total production part cost.
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| 48. |
- Windmark, Christina, et al.
(författare)
-
Manufacturing costs and Degree of Occupancy Based on the Principle of Characteristic Parts
- 2012
-
Konferensbidrag (refereegranskat)abstract
- In making capacity estimates and cost calculations in the manufacturing industry, many products and production systems are often involved, making the data in their totality difficult to grasp. Introducing the concept of the characteristic part, which is a fabricated part seen as representative of all parts produced in terms of demand, setup time, cycle time, average batch size and total number of batches involved, makes the calculations required much more manageable and much less time-consuming. The article takes up how the characteristic part is defined and how it can be used in calculating production capacity, system utilization and manufacturing costs.
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| 49. |
- Winroth, Mats, 1956, et al.
(författare)
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Indicators of sustainable production - A survey among Swedish manufacturing industry
- 2014
-
Ingår i: Proceedings of the 1st EurOMA Sustainable OM & SCM Forum. - : International Annual EurOMA Conference.
-
Konferensbidrag (refereegranskat)abstract
- Sustainable development has become more and more in focus over a number of years. Sustainability is however quite large issue, involving environmental, economical, and social aspects, and the question is how it may apply to production within the factory walls. This paper describes the outcome from testing 52 suggested Key Performance Indicators (KPIs) in a survey to Swedish manufacturing industry. The answering rate was 10 %, resulting in 65 answers from randomly selected responding companies. All KPIs were more or less used, but 27 KPIs indicated statistical significance, constituting 6 environmental, 13 economic, and 8 social indicators.
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|
| 50. |
|
|
