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  • 251.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Tinnsten, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Classical style constructed roller skis and grip functionality2011In: Procedia Engineering: The Impact of Technology on Sports IV / [ed] Subic A., Fuss F.K., Alam F., Clifton P., Elsevier, 2011, p. 4-9Conference paper (Refereed)
    Abstract [en]

    Roller skis are used by cross-country skiers for snow-free training, with the aim of imitating skiing on snow. The roller skis on the market that are constructed for use in the classical style are equipped with a front and a back wheel, one of which has a ratchet to enable it to grip the surface when diagonal striding and kick double poling.

    A new type of roller ski was constructed with a function which makes it necessary to use the same kick technique as that used on snow, i.e. the ski has a camber that must be pushed down to obtain grip. Its stiffness can be adjusted based on factors that influence grip, i.e. the skier’s bodyweight and technical skiing skills.

    Thus, our aim was to make comparative measurements as regards grip between ratcheted roller skis and the roller ski with a camber and compare with previous published results for grip waxed skis during cross-country skiing on snow.  The measurements were carried out using specially developed equipment, with a bottom plate and an overlying rubber mat of the same type as used on many treadmills and a function for applying different loads and generating traction on the back of the roller ski.

  • 252.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
    Tinnsten, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
    Rolling resistance for treadmill roller skiing: Presented at International Congress on Science and Nordic Skiing 2006, June 18-20, 2006, Vuokatti, Finland2006Conference paper (Other academic)
  • 253.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Tinnsten, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Laaksonen, Marko S.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Skiing economy and efficiency in recreational and elite cross-country skiers2013In: Journal of Strength and Conditioning Research, ISSN 1064-8011, E-ISSN 1533-4287, Vol. 27, no 5, p. 1239-1252Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to investigate and compare skiing economy and gross efficiency in cross-country skiers of different performance levels, ages and genders; male recreational skiers and elite senior and junior cross-country skiers of both genders. The skiers performed tests involving roller skiing on a treadmill using the gear 3 and diagonal stride techniques. The elite crosscountry skiers were found to have better skiing economy and higher gross efficiency (5-18%) compared with the recreational skiers (p < 0.05) and the senior elite had better economy and higher efficiency (4-5%) than their junior counterparts (p < 0.05), whereas no differences could be found between the genders. Also, large ranges in economy and gross efficiency were found in all groups. It was concluded that, in addition to v̇O2peak, skiing economy and gross efficiency have a great influence on the differences in performance times between recreational and junior and senior elite cross-country skiers, as well as between individual skiers within the different categories. Thus, we recommend crosscountry skiers at all performance levels to test not only v̇O2peak, but also skiing economy and efficiency.

  • 254.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Jensen, Kurt
    Syddansk Universitet, Odense, Danmark.
    Rosdahl, Hans
    Swedish School of Sport and Health Sciences, GIH, Stockholm.
    Breathing resistance in automated metabolic systems is high in comparison with the Douglas Bag method and previous recommendations2018In: Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, ISSN 1754-3371, Vol. 232, no 2, p. 122-130Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to investigate the resistance (RES) to breathing in metabolic systems used for the distribution and measurement of pulmonary gas exchange. A mechanical lung simulator was used to standardize selected air flow rates ( , L/s). The delta pressure (∆p, Pa) between ambient air and the air inside the equipment was measured in the breathing valve’s mouthpiece adapter for four metabolic systems and four types of breathing valves. RES for the inspiratory and expiratory sides was calculated as RES = ∆p / , Pa/L/s. The results for RES showed significant (p < 0.05) between-group variance among the tested metabolic systems, as well as the breathing valves and between most of the completed . The lowest RES among the metabolic systems was found for a Douglas Bag system, with approximately half of the RES compared to the automated metabolic systems. The automated systems were found to have higher RES already at low  in comparison to previous recommendations. For the hardware components, the highest RES was found for the breathing valves while the lowest RES was found for the hoses. Conclusion: The results showed that RES in metabolic systems can be minimized through conscious choices of system design and hardware components. 

  • 255.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Jonsson, Patrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Drag Area, Frontal Area and Drag Coefficient in Cross-Country Skiing Techniques2018In: Proceedings, Volume 2, ISEA 2018 / [ed] Hugo Espinosa, David Rowlands, Jonathan Shepherd, David Thiel, MDPI, 2018, Vol. 2, article id 313Conference paper (Refereed)
    Abstract [en]

    The aim of this study was to investigate the air drag, frontal area and coefficient of drag of cross-country skiing classical and free style techniques. One highly skilled cross-country skier performed skiing-like classical and free style techniques on a force plate in a wind tunnel. The skier was also photographed from the front in order to analyze the projected frontal area, which was determined from digital images using Matlab. From the results of the air drag and the frontal area measurements, the drag coefficient was also calculated. The results can be used by researchers to calculate the theoretical effect of air drag on cross-country skiing performance.

  • 256.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Rännar, Lars-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Tinnsten, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    The multi functional roller ski2012Conference paper (Refereed)
  • 257.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Rännar, Lars-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    Tinnsten, Mats
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics.
    The multifunctional roller ski2013In: Science and Nordic Skiing II / [ed] Hakkarainen A, Linnamo V, Lindinger S, University of Salzburg, University of Jyväskylä , 2013, p. 253-261Chapter in book (Refereed)
  • 258.
    Ainegren, Mats
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Tuplin, Simon
    Loughborough University, Loughborough, UK.
    Carlsson, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Management and Mechanical Engineering.
    Render, Peter
    Loughborough University, Loughborough, UK.
    Design and development of a climatic wind tunnel for physiological sports experimentation2018In: Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, ISSN 1754-3371Article in journal (Refereed)
    Abstract [en]

    The aim of this project was to develop a wind tunnel that enables the study of human performance during various types ofsports and physical activities by examining the influence of aerodynamic drag, precipitation, frictional forces and gravitationalforces on uphill and downhill travel on a moving substrate. An overall design for a wind tunnel and working section containinga large treadmill was drafted, followed by computational fluid dynamics simulations of flow conditions to assess thedesign’s feasibility and select from different geometries prior to its construction. The flow conditions in the completed windtunnel were validated using different flows, speeds and treadmill inclinations. Pilot experiments were carried out using across-country skier to investigate the effect of aerodynamic drag on oxygen uptake during double poling and the maximalachieved speed when rolling on a declined treadmill. The purpose was to validate the usefulness of the tunnel. The resultsshowed that flow conditions are acceptable for experiments even in worst-case scenarios with maximal inclined and declinedtreadmill. Results also showed that aerodynamic drag has a significant impact on the skier’s energy expenditure.

  • 259.
    Akambih Tajam, Joseph
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Jonsson, Anders
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Fröling, Morgan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    SMALL SCALE IN-SITU BIOREMEDIATIONOF DIESEL CONTAMINATED SOIL –SCREENING LIFE CYCLE ASSESSMENT OF ENVIRONMENTAL PERFORMANCE2010In: ECO-TECH´10, 22-24 November 2010, Kalmar, Sweden: International Conference on Natural Sciences and Technologies for Waste and Wastewater Treatment, Remediation, Emissions Related to Climate, Environmentaland Economic Effects / [ed] FABIO KACZALA, SANDRINE ARZUR, IDA TJÄDER WILLIAM HOGLAND, 2010, p. 827-835Conference paper (Other academic)
    Abstract [en]

    Spillage of diesel oil and other petroleum products is a commonly creating need for siteremediation of contaminated soils. In Sweden the most common remediation action isexcavation of the contaminated soil and off site biological treatment by composting.However, a number of small sites spread out in rural areas end up low on priority lists, andwill not be attended to within foreseeable future if ever. For such areas a low cost, easy toapply remediation techniques would be of interest. Enhanced bioremediation of dieselcontaminants in soil by whey addition has been demonstrated in lab scale. Whey is a byproductfrom cheese production. A first pilot remediation trial on an actual site in Gäddede,County of Jämtland, was started the summer of 2010. Using this site as a case study ascreening life cycle assessment model has been set up. The goal of the study was toinvestigate the environmental performance of the whey method, to benchmark the wheymethod toward the excavation and composting practice and to identify environmental hotspots in the whey treatment life cycle. The study aims at establishing if further work shouldbe put into developing the method, or if the environmental performance is such that the wheymethod should be abandoned. It should be noted that even with a slightly worseenvironmental performance compared to other remediation alternatives whey treatment couldstill be of interest, since the small scale sites in rural areas we talk about here otherwise mostoften would not be attended to.Results from the screening life cycle assessment indicate a rather good environmentalperformance of the whey method, partly depending on impact category considered. For thewhey method, impacts from farming activities in the milk production chain allocated to thewhey give significant contributions. Transportation gives important impacts from both thewhey method and the excavation and off site composting, thus logistics should always beconsidered and optimized. The whey on-site treatment could be an interesting alternative forbioremediation especially at sites that would not otherwise be treated, due to small size orremote location.

  • 260.
    Akbar, Adnan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Influencing Factors on Quality of Experience (QoE) in Mobile Computing2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Applications that can change their behaviour based on the user’s contextual appearance are called context-aware applications. Applications developed for smart phones, which carry a multitude of different sensors, and actuators have gained a huge penetration within the market. Frequent usage of mobile applications such as home automation, friend finder, car accident notification and tracking etc; have seen an increased growth from the user’s perspective. However, for such applications, it is necessary to have knowledge of the performance and cost parameters, which directly affect the QoE of the application users.  This thesis investigates possible context aware behaviours in real time situations and measures the Quality of Experience (QoE) as well as identifying the Packet Delay Variation (PDV). The background and some state-of-the-art technologies are studied, and based on these studies, three scenarios are designed and implemented and based on their QoE, results and conclusions are presented, with the  results obtained  shown by means of   graphical representations of the QoE and PDV values. 

  • 261.
    Akdag, Berfin
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Bandeily, Soraya
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Att vårdas för MRSA-En litteraturöversikt av patienters upplevelser2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 262.
    Akindele, Hawawu
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Business, Economics and Law.
    Wahib, Khouloud
    Mid Sweden University, Faculty of Human Sciences, Department of Business, Economics and Law.
    The Speed of Internationalization among Born-Global SMEs: A Case Study of High Teck SMEs2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 263.
    Akner, Corina
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Industrial Design.
    Labyrinternet: Vilken plats tar internet i ditt liv?2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Internetifieringen i vårt samhälle går rasande fort och vi blir mer och mer uppkopplade.Detta projekt handlar om att upplysa betraktaren om mötet med internet och skapa enpersonlig relation till det fenomen som internet är. Genom ett synliggörande med aktiv interaktionligger projektet i gränslandet mellan kritisk design, interaction design och industridesign med fokuspå 'Design För Alla' frågor för alla.’Design För Alla’ är en innovationsmetod som innebär att frågeställningar ställs på sin spets ochatt man utgår från och testar sina idéer tillsammans med dem som ställer högst krav och harstörst behov. ’Design För Alla’ gör att man kan ifrågasätta gammal praxis och existeradereferensramar för standardlösningar och istället angripa en frågeställning utifrån nyaassociationsbanor och inspirationsingångar som gör researchen mer tillåtande och spännande.Ett av projektets viktigaste moment var en workshop med en grupp kognitivt nedsatta ungdomarfrån Höghammarskolan. Att blanda in personer med kognitiv funktionsnedsättning lägger fokuspå andra frågor än en “normalstörd” studiegrupp skulle ha gjort. Dessa ungdomar lever under en”disorienterad norm” där de med sin funktionsnedsättning lärt sig hitta vägar runt sinaproblem och ofta går problemlösning till mötes mer ”rakt på” och intuitivt. ’Design För Alla’ har berikatmin process genom att jag försökt anamma deras ”hands on” och lekfulla sätt för att förberedamig för workshopens laborativa moment kring färg, ljud, form, material, rörelse ochsemiotiska funktioner kring framför allt på och avstängning. Det har gjort att jag sökt efter merintuitiva och basala kroppsliga uttryck för interaktion och kommunikation med mitt internetkoncept.För hur lever och upplever vi något som är osynligt? Resultatet är Labyrinternet; ett homage tillinternet i form av en el&internet-station som också agerar plattform för debatten kring frågan”Vilken plats tar internet i vår vardag och i våra liv?”

  • 264.
    Akpalu, Wisdom
    et al.
    United Nations University - WIDER.
    Stage, Jesper
    Mid Sweden University, Faculty of Human Sciences, Department of Business, Economics and Law.
    Connectivity at a cost: The economic dynamics of connectivity restoration2014Conference paper (Refereed)
    Abstract [en]

    The ecological literature shows that there is a species-area relationship between habitat size and the equilibrium number of species that will thrive in a habitat. There is also a literature on habitat fragmentation showing that, if a larger habitat is broken up into smaller fragments, the long run equilibrium species number will decline in each of the remaining fragments according to the same relationship. Both in the United States and in Europe there is ongoing work on reversing habitat fragmentation in river systems, with fish ladders and other measures being introduced to restore connectivity in river systems that have previously been subdivided into smaller habitats by hydropower and other developments. However, even if connectivity is restored, the new and higher equilibrium species number will be reached only after extended periods of time. This means that measures to restore connectivity entail incurring one-time investment costs (and possibly continuous long run increases in maintenance costs as well) in order to gain habitat improvements that will generate increasing value over time upto the point where the new, better equilibrium is reached. In this paper, we set up a theoretical model to investigate what the conditions are for such an investment to be socially profitable, and link the model to empirical data from measures to restore river system connectivity which show how quickly this recovery tends to occur in practice. We find that even in cases where it would have been socially preferable not to build a hydropower installation in the first place, connectivity-restoring measures affecting the installation are not necessarily socially profitable. Under a wide range of plausible assumptions about discount rates, investment costs and productivity losses, decommissioning the hydropower plant once its economic lifespan is past is a better option, from the social planner’s perspective, than carrying out measures while the plant is still economically viable.

  • 265.
    Al Haddad, Zahra
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Turkia, Jessie
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    ”Att ha möjligheten till att tala sitt modersmål är grunden för att uppehålla sin identitet som finländare”.: En studie om språkets betydelse för äldre med finsk modersmål2013Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I takt med att Sveriges befolkning ökar så ökar även invånare med utländsk bakgrund. När dessa invånare blir äldre medför detta att språkets betydelse inom äldreomsorgen kommer i fokus, då många individer önskar vård på sitt modersmål. Äldre med finska som modersmål är den enskilt största minoritetsgruppen i Sverige och de har idag enligt lag rätt till äldreomsorg på finska. Uppsatsens syfte är att undersöka språkets betydelse för välbefinnandet hos äldre med finska som modersmål inom äldreomsorgen. Arbetet är en kvalitativ studie baserad på kvalitativa intervjuer med äldreboende i kommuner där de äldre har rätt till finsk äldreomsorg. Samtliga personer hade finska som modersmål. Resultatet visar att språket, i form av att kunna tala sitt modersmål, har betydelse inom äldreomsorgen för att minska oro, för att kunna uttrycka tankar och behov och för att känna trygghet och gemenskap på äldreboendet.

  • 266.
    Al Harbiti, Cherin
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Woldner, Liza
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Betydelsen av stöd bland individer med kronisk obstruktiv lungsjukdom2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 267. Al Khatib, I.
    et al.
    Maguire, G.Q.
    Ayani, R.
    Forsgren, Daniel
    Wireless LAN Access Point Modeling as a Queuing System2002In: Proceedings of The Communications and Computer Networks 2002 Conference (CCN 2002), MIT, Cambridge, USA, November 4-6, 2002, 2002, p. 463-468Conference paper (Other academic)
    Abstract [en]

    This paper presents a research study of wireless LAN access points for IEEE 802.11b, where we seek to model the access point as a queuing system. The model can be used to compare performance metrics of different wireless LAN access points and to investigate the QoS of specific applications in the presence of a wireless LAN access point. In this paper, we focus on two parameters: the delay introduced by a wireless LAN access point and the average service time required to serve a packet passing through an access point. A major result is an analytic solution for the average service time of a packet in relationship to payload.

  • 268. Al Khatib, I.
    et al.
    Maguire, G.Q.
    Ayani, R.
    Forsgren, Daniel
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Wireless LAN Access Points as Queuing Systems: Performance Analysis and Service Time2003In: Mobile Computing and Communications Review, ISSN 1559-1662, Vol. 7, no 1, p. 28-30Article in journal (Refereed)
    Abstract [en]

    Since the approval of the IEEE 802.11b by the IEEE in 1999, the demand for WLAN equipment and networks has been growing quickly. We present a queuing model of wireless LAN (WLAN) access points (APs) for IEEE 802.11b. We use experimentation to obtain the characteristic parameters of our analytic model. The model can be used to compare the performance of different WLAN APs as well as the QoS of different applications in the presence of an AP. We focus on the delay introduced by an AP. The major observations are that the delay to serve a packet going from the WLAN medium to the wired medium (on the uplink) is less than the delay to serve a packet, with identical payload, but travelling from the wired medium to the WLAN medium (on the downlink). A key result is an analytic solution showing that the average service time of a packet is a strictly increasing function of payload.

  • 269.
    Alajoutsijärvi, Kimmo
    et al.
    Univ Oulu, Sch Business, Dept Mkt, POB 4600, Oulu 90401, Finland .
    Klint, Mats B.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Sciences.
    Tikkanen, Henrikki
    Customer relationship strategies and the smoothing of Industry-Specific Business Cycles: The Case of the Global Fine Paper Industry2001In: Industrial Marketing Management, ISSN 0019-8501, Vol. 30, no 6, p. 487-497Article in journal (Refereed)
    Abstract [en]

    The purpose of this study is to argue for the importance of customer relationship strategies in smoothing industry-specific business cycles. We use the global fine paper industry as an example of an industry renowned for its drastic, seemingly uncontrollable business cycles. As in so many other global industries producing upstream, commodity products such as steel, copper, or sawn goods, dramatic price fluctuations are a reality for managers in both supplying and buying organizations in the fine pager industry. In this article, a representative case of one business cycle is described and analyzed to illustrate the empirical phenomenon in a real-life setting. We use some specific concepts and frameworks developed in industrial marketing research to further understanding of the underlying logic behind business relationships that enhances cyclicality in the industry. Furthermore. these concepts also give insights into the smoothing of industry-specific business cycles through the application of more explicit, cooperative customer relationship strategies. (C) 2001 Elsevier Science Inc. All rights reserved.

  • 270. Ala-Juusela, M.
    et al.
    Paiho, S.
    Tommerup, H.
    Svendsen, S.
    Mahapatra, Krushna
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Gustavsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Haavik, T.
    Aabrekk, S.
    Successful sustainable renovation business for single-family houses2010In: SB10, Sustainable Community, Espoo, Finland, September 22-24, 2010., 2010Conference paper (Refereed)
  • 271.
    Alam, Anzar
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Thim, Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lindgren, Johan
    Iggesund Paperboard AB, Iggesund, Sweden.
    Lidén, Joar
    SCA Ortviken AB, Sundsvall, Sweden.
    Online surface roughness characterization of paper and paperboard using a line of light triangulation technique2012In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 27, no 3, p. 662-670Article in journal (Refereed)
    Abstract [en]

    Within both the paper and paperboard industries, real time monitoring and measurement of surface roughness of a paper moving at high velocities is an important and challenging area of research. The uniform surface, for an entire production, can be effectively achieved by monitoring and controlling the paper surface roughness, in real time during the manufacturing steps. Presently the majority of paper industries rely on traditional laboratory profilometers. The obvious limitations of lab profilometers are that these are slow, do not measure the quality of entire reels but rather deal with only a few small pieces of samples taken from the end of the reels and it is difficult to make any possible correction in the productionlines without knowing the online roughness data. To eradicate the disadvantages associated with conventional measurements, an online prototype instrument has been developed that measures the surface roughness during the manufacturing steps, and is based on a line of lighttriangulation technique. The prototype technique will be of assistance in ensuring tight process control in order to maintain both a better and auniform quality throughout the entire production. It measures the whole reel, meter by meter, in traditional units of roughness and is also capable of characterizing the topography in a wide range of wavelength spectra. The article presents the online analyses results obtained from the developed prototype. The real time measurements, in a paperboard pilot mill, have successfully characterized and distinguished 16 different grades of newspaper and paperboard reels including reels which have the same family of quality grades and materials.

  • 272.
    Alam, Anzar
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Thim, Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lindgren, Johan
    Iggesund Paperboard AB, Iggesund, Sweden.
    Lidén, Joar
    SCA Ortviken AB, Sundsvall, Sweden.
    Online surface characterization of paper and paperboards in a wide-range of the spatial wavelength spectrum2012In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 258, no 20, p. 7928-7935Article in journal (Refereed)
    Abstract [en]

    In the paper industry, surface topography is the essence of both paper and paperboard, and accurate topographical measurements are equally essential in order to achieve a uniform smooth surface. The traditional laboratory methods measure only a few samples from the entire tambour and there are other obvious limitations to this approach. Online measurements may be of significant value to improve the surface quality throughout the production. Roughness is one of the topography components and the majority of techniques measure paper by means of a single predictor of average roughness, R a which is inadequate in providing a comprehensive characterization of the surface. Measurements, in a wide range ofwavelengths, can characterize topography components such as roughness, waviness, cockling, etc. Online measurements were taken for various grades of 8 paper reels, containing the wireside and topsides for newspaper, and uncoated and coated sides of paperboards. Their surfacecharacterization, in the spatial wavelength spectrum, from 0.1 to 10 mm was obtained. This article presents the online characterizationresults which have efficiently distinguished the surfaces of same family materials including the edge and the middle position reels of fine coatedpaperboard. Online measurements were taken, at Iggesund Paperboard Pilot Coater in Sweden, by using a recently developed OnlineTopography (OnTop) device which is based on the principle of light triangulation. © 2012 Elsevier B.V. All rights reserved.

  • 273.
    Alam, Mohammad Anzar
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Online optical method for real-time surface measurement using line-of-light triangulation2013Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Real time paper surface-web measurement is one of the challenging research fields. The traditional laboratory method has many limitations and is unable to measure the entire tambour during the manufacturing process. It has been necessary to develop an online technique that could measure the surface topography in real time. An optical technique was developed, based on laser triangulation, and is applied to develop a new prototype device, which characterizes high speed paper-web surfaces over a wide scale of spatial wavelengths spectrum and computes the surface roughness in real time. The used multi channel pulsed laser diode, source of illumination onto the paper-web, is of benefit due to its low coherence length and is capable to deliver a powerful burst of light beam over a 1 µs duration, which delivers energy of 100 µJ per pulse. The short exposure time avoids blurriness in the acquired images which could possible due to the high speed and vibrations on the paper-web.

    The laser beam is shaped into a narrow line-of-light using cylindrical lenses and is projected onto a paper-web surface, which covers a physical length of about 210 mm. The created line-of-light cross section full width at half maximum, FWHM Gaussian distribution, is 2-3 pixels on the image. The line-of-light is projected onto the paper-web perpendicular to the plane of the surface. The low angled, low specular, reduced coherence length, scattered reflected laser line is captured by the 3 CCD sensors, which are synchronized with the laser source. The low specular light ensures to avoid saturation of the imaging sensors if the surface is very smooth, and obliquely captures the z-directional fine feature of the surface.

    The scattered phenomenon of the reflected light is responsible for the surface irregularity measurements. The basic image processing algorithm is applied in order to remove noise and cropped the images widthwise so that only pixels above a preset threshold gray level can be processed, which enables efficient real time measurement. The image is transformed into a 1D array using the center of gravity, COG. The accuracy and precision of the COG depends on the line-of-light FWHM, which, in turn, is responsible for the accuracy, noise and the resolution of the developed technique. The image subpixel resolution achieved is 0.01 times a pixel and uuncertainty in the raw data is 0.43 µm while it is 0.05 µm in the rms roughness.

    The signal processing steps combining the B-Spline filter and the filter in the spatial frequency domain were employed in order to separate roughness, waviness, and form and position error in the raw profile. The prototype is designed to measure online surface roughness and to characterize surface in a spatial wavelength spectrum from 0.09 to 30 mm, which is extendable to any required spatial range in order to cover a wide scale surface feature such as micro roughness, macro roughness and waviness. It is proven that exploitation of a simple laser triangulation technique could lead to an improvement in the overall quality and efficiency in the paper and paperboard industries and it can also be of potential interest for the other surface characterization problems.

  • 274.
    Alam, Mohammad Anzar
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Online Surface Topography Characterization Technique for Paper and Paperboard using Line of Light Triangulation2012Licentiate thesis, comprehensive summary (Other academic)
  • 275.
    Alam, Mohammad Anzar
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Thim, Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Real time surface measurement technique in a wide range of wavelengths spectrum2014In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 14, no 1, p. 285-294Article in journal (Refereed)
    Abstract [en]

    Real time surface topography measurement in the paper and paperboard industries is a challenging research field. The existing online techniques measure only a small area of paper surface and estimate topographical irregularities in a narrow scale as a single predictor. Considering the limitations and complications in measuring the surface at high speed, a laser line triangulation technique is explored to measure surface topography in a wide scale. The developed technique is new for the paper and paperboard application that scans a line onto the paper-web surface up to 210 mm in length in the cross machine direction. The combination of a narrow laser linewidth imaging, a subpixel resolution, and the selection of a unique measurement location has made it possible to measure roughness and simultaneously characterize paper surface topography from 0.1 to 30 mm spatial wavelength. This spatial range covers wide scale surface properties such as roughness, cockling, and waviness. The technique clearly distinguishes and characterizes the surface of newspaper, and lightweight coated, coated, and uncoated paperboard in real time during the paper manufacturing process. The system temporal noise for the average roughness is estimated as 37 dB. The signal to noise ratio found is from 5.4 to 8.1 in the short spatial wavelength up to 1 mm, whereas it is more than 75 in the long spatial wavelength from 5 to 10 mm.

  • 276.
    Alam, Mohammad Anzar
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Thim, Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Westerlind, Christina
    Performance and Prototyping Laboratory, SCA AB, Research and Development Centre, Sundsvall 852 37, Sweden .
    Limitation of a line-of-light online paper surface measurement system2014In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 14, no 8, p. 2715-2724Article in journal (Refereed)
    Abstract [en]

    A new prototype device has been developed based on a laser triangulation principle to measure online surface topography in the paper and paperboard industries. It characterizes the surface in a wide spatial scale of topography from 0.09-10 mm. The prototype's technique projects a narrow line-of-light perpendicularly onto the moving paper-Web surface and scattered reflected light is collected at a low angle, low specular, and reduced coherent length onto the CCD sensors synchronized with the laser sources. The scattering phenomenon determines surface deviations in the z-direction. The full-width, at half-maximum of a laser line in cross section is sensitive in computation of the surface topography. The signal processing aspect of the image processing, for example, threshold and filtering algorithms are also sensitive in estimating the accurate surface features. Moreover, improper light illumination, intensity, reflection, occlusion, surface motion, and noise in the imaging sensor, and so forth, all contribute to deteriorate the measurements. Optical techniques measure the surface indirectly and, in general, an evaluation of the performance and the limitations of the technique are both essential and challenging. The paper describes the accuracy, uncertainty, and limitations of the developed technique in the raw profiles and in terms of the rms roughness. The achieved image subpixel resolution is 0.01 times a pixel. Statistically estimated uncertainty (2σ) in the laboratory environment was found 0.05 μm for a smooth sample, which provides a 95% confidence level in the rms roughness results. The depth of field of the prototype is ~2.4 mm.

  • 277.
    Alam, Mohammad Anzar
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Thim, Jan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Westerlind, Christina
    SCA R&D Centre, Sundsvall, Sweden.
    Lindgren, Johan
    Iggesund Paperboard AB, Iggesund, Sweden.
    Lidén, Joar
    SCA Ortviken AB, Sundsvall, Sweden.
    Investigation of the surface topographical differences between the Cross Direction and the Machine Direction for newspaper and paperboard2011In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 26, no 4, p. 468-475Article in journal (Refereed)
    Abstract [en]

    Paper and paperboard surface quality is constantly being improved by the industry. This improvement work deals with the essential fact that the surface topography must be measured, both in relation to offline and online measurements for the manufactured products. Most measurements relating to surface topography (especially online) are performed either in the machine direction (MD) or in the cross direction (CD). It has been the opinion of SCA Ortviken AB and Iggesund Paperboard AB that the surface topography amplitudes are almost always higher in the CD than in the MD, for their products which consist of newspaper and paperboard. This article aims to investigate the rela-tionship between the CD and the MD surface topography amplitudes for a wide range of spatial wavelength for both newspaper and paperboard. The tests and investiga-tions have been conducted using an FRT Microprof profilometer within the range 20 μm up to 8 mm, and the results confirm that the surface topography amplitudes are higher in the CD for most of the shorter spatial wavelength within this range. The results also show significant differences between measurements for different paper qualities, suggesting a requirement to investigate the relationship between the CD and the MD topography for all paper and paperboard qualities of interest for a paper or paperboard mill, before a decision is made in relation to a measurement method.

  • 278.
    Alamattila, Emma
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Larsson, Erika
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Kommunikation vid afasi - hinder och möjligheter: -En litteraturöversikt2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: I Sverige drabbas årligen cirka 12 000 personer av afasi. Afasi kan uttrycka sig i olika former såsom expressiv, impressiv och global afasi. De kommunikationssvårigheter som patienten lider av kan leda till känsla av meningslöshet och frustration. Syfte: Syftet med litteraturöversikten var att belysa förhållanden som påverkar kommunikationen med patienter med afasi ur vårdpersonalens perspektiv Metod: Litteraturöversikt baserad på tretton vetenskapliga artiklar med kvalitativ (n=8), kvantitativ (n=2) och mixad (n=3) metod. Resultat: Litteraturöversikten var uppdelad i två huvudkategorier där det första kategorin ”Omständigheter som underlättar kommunikationen” belyser omständigheter som bidrog till en framgångsrik kommunikation. Det andra kategorin ”Omständigheter som begränsar kommunikationen” belyser faktorer som begränsar möjligheterna att uppnå en lyckad kommunikation mellan vårdpersonal och patienter med afasi. Diskussion: Kommunikationens förutsättningar och hinder återfinns även hos patienter. Kommunikationen påverkar den vård som patienten får, att vårdpersonalen har möjligheterna att få till en fungerande kommunikation bl.a ge tid till patienten och skapa en lugn miljö. Slutsats: Det krävs att vårdpersonalen har god kunskap kring hur de på bästa möjliga sätt kan kommunicera med patienter med afasi. Framtida forskning bör fokuseras på att öka kunskapsnivån i fenomenet ytterligare genom att forska mera kring kommunikationsstrategier.

  • 279.
    Alan, Mustafa Burak
    Mid Sweden University, Faculty of Human Sciences, Department of Social Sciences.
    The Political Function of the Visegrad Group: A study of the political function and role of the Visegrad Group within European Integration from a regionalist perspective2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The Visegrad Group, consisting of Poland, Czech Republic, Hungary and Slovakia, is a subregional cooperation that is in the Central Europe. Its goal is to create a region where these countries can easily work together in the fields of common interests, above all the main objective of EU membership. Since 2004, all the four Visegrad countries have gained a full membership status of European Union and the question remains what political function, role and influence the Visegrad Group has in the larger context of European Integration after achieving this goal.The purpose of this study is to examine what political function, role and influence the Visegrad Group has in the larger context of European Integration. As a subregional cooperation, the V4 will be analyzed by studying its political function in two sectors, defence and environment, from a regionalist perspective.

  • 280.
    Alander, Margareta
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Westner, Kristina
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Familjehemmets biologiska barn: En kvalitativ studie från det biologiska brnets perspektiv av att växa upp i ett familjehem.2010Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Meningen med denna studie var att låta de biologiska barnen i familjehemmet komma till tals om hur de upplevde uppväxten i ett familjehem och hur uppväxtförhållanden har påverkat dem som vuxna. För att besvara studiens syfte har vi använt oss av tidigare forskning inom det valda ämnesområdet. Vi valde en halvstrukturerad intervjumetod med öppna underfrågor där intervjuguiden var vårt underlag för våra samtal. Respondenterna inledde med en liten berättelse av sin uppväxt. Därefter övergick intervjun till att vara strukturerad med en öppen rörlighet i både frågor och svar. Analysmetoden vi valde var tematisk där ämnes områden skrevs ner och underfrågor sorterades in under rätt ämnesområde, för att få struktur i arbetet och kunna sammanställa analysen. Undersökningen gjordes ur ett vuxenperspektiv och vi intervjuade två kvinnor och två män med olika familjehemsbakgrund. Männen var uppvuxna med ett familjehemssyskon och kvinnorna med flera familjehemssyskon samtidigt. I studien framkom att flickorna hade fått ta ett större ansvar om sig själv och hade haft förväntningar på sig att vara förstående i många situationer vilket inte pojkarna upplevde att det förväntats av dem. Flickorna hade känt sig i skymundan och känt av rivalitet till sina familjehemssyskon medan pojkarna tog den plats de behövde och hade alltid känt sig delaktig i familjen. Flickorna hade önskat mer tid och uppmärksamhet av sina föräldrar medan pojkarna upplevde att de fått den tid och uppmärksamhet de behövde av sina föräldrar.  Vi kom fram till att det inte går finna någon generell förklaring till hur uppväxten i ett familjehem upplevs, men att de biologiska barnen har det gemensamt att de hjälper familjen genom stöttning och kan många gånger känna oro för sina föräldrar. De problem och svårigheter som uppkommer i ett familjehem får de biologiska barnen många gånger ta del av, vilket kan vara en förklaring på en tidig intellektuell åldersutveckling. De biologiska barnens uppväxtförhållanden påverkar dem till att bli omsorgsgivande med en empatisk förmåga för andra människor i vuxen ålder.

  • 281. Alarco, J A
    et al.
    Brorsson, G
    Olin, Håkan
    Department of Physics, Chalmers University of Technology/University of Göteborg.
    Olsson, E
    Early stages of growth of YBa2Cu3O7− high Tc superconducting films on (001) Y-ZrO2 substrates1994In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 75, p. 3202-3204Article in journal (Refereed)
    Abstract [en]

    Theearly stages of growth of high quality YBa2Cu3O7− (YBCO) filmsgrown on (001) Y-ZrO2 (YSZ) substrates by pulsed laser depositionhave been studied using a combination of atomic force microscopyand transmission electron microscopy. A one unit cell thick YBCOlayer and relatively large CuO particles formed in the initialstages. Additional YBCO grew on top of the first layerin the form of one or a few unit cellhigh c-axis oriented islands about 30 nm in diameter. Therounded islands subsequently coalesced into faceted domains. Elongated Y2BaCuO5 particlesnucleated after the first layer of YBCO. A highly texturedBaZrO3 layer formed between the YSZ and the YBCO witha cube-on-cube dominant orientation relationship with respect to the YBCOfilm. Journal of Applied Physics is copyrighted by The American Institute of Physics.

  • 282.
    Alarcon, Jessica
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Gutic, Sanel
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Socialtjänstens arbete med ensamkommande flyktingbarn: -en kvalitativ studie om psykisk ohälsa bland ensamkommande flyktingbarn med syftet att främja integreringen2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Den stora flyktingvågen är ett aktuellt ämne som även väckt många debatter på internationell nivå. Under 2015 anlände cirka 36 00 ensamkommande barn till sverige. Dessa barn och ungdomar har ställts inför livsförändrande omständigheter. Syftet med denna studie har varit att ta reda på hur socialtjänsten arbetade med ensamkommande barns psykiska ohälsa som målsättningen för ett främjande av integrering i samhället. Datainsamlingen vi använde oss av var genom kvalitativa intervjuer där sju socialsekreterares arbetsmetoder samlats in, samt analyserats med hjälp av en intervjuanalys. Genom semistrukturerade intervjuer har materialet samlats in då för tolkning och analysering. De teorier som studien lutade sig tillbaka på och vad resultatet analyserades utifrån är Aaron Antonovskys KASAM:s känsla av sammanhang samt Abraham Maslows behovstrappa och Empowerment. Slutsatsen och resultatet av denna studie beskriver att socialsekreterare arbetar hela tiden med att uppnå ett så väl och gott arbete gentemot barn och ungdomar som möjligt, samt även att de behov varje barn och ungdom har tillfredsställs samt tillgodoses utifrån bästa och möjliga situation. Socialsekreterare möter dagligen problematik hos barn och ungdomar, problematik som orsakats av resan till ett land eller problematik som orsakats av händelser i ursprungslandet. Arbeten som gynnar barn och ungdomar med psykisk ohälsa resulterar i att hälsan blir bättre och integreringen i ett samhälle blir lyckad samt även att integrationen även den blir lyckad.

  • 283. Alastalo, Ari
    et al.
    Mattila, Tomi
    Leppäniemi, Jakkoo
    Suhonen, Mika
    Kololuomo, Terho
    Schaller, Andreas
    Andersson, Henrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Manuilskiy, Anatoliy
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Gao, Jinlan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Nilsson, Hans-Erik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Rusu, Alexandru
    Ayöz, Suat
    Stolichnov, Igor
    Siitonen, Simo
    Gulliksson, Mikael
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Siden, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lehnert, Tobias
    Adam, Jens
    Veith, Michael
    Merkulov, Alexey
    Damaschek, Yvonne
    Steiger, Jurgen
    Cederberg, Markus
    Konecny, Miroslav
    Printable WORM and FRAM memories and their applications2010In: Large area, organic & printed electronics (LOPE-C) 2010, 2010, p. 8-12Conference paper (Refereed)
  • 284.
    Alawi, Hussein
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Guyo, Hassan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    En värdeflödesanalys av ett reservdelslager i en fluktuerande marknad.: En fallstudie med avseende att implementera Lean.2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Företag inom stålindustrin tacklas nuförtiden med en fluktuerande och oförutsägbar marknad. Detta resulterar i försiktiga åtgärder och svårigheter med att planera och uppnå långsiktiga mål. Ovissheten leder till att beslut ibland baseras på felaktiga prognoser. I höjden av denna fluktuerande marknad behövs vanligtvis förstärkning i och med att efterfrågan ökar. Detta leder till att företag ställs inför svåra beslut, att anställa ytterligare personal och/eller utöka lagerhållning. Denna marknad kan så småningom vända och detta leder till varsel av personal samt kontraktion av depåer för att hålla en viss vinstnivå, som det tidigare har hänt. Ett av alternativen som återstår i dagsläget är effektivisering av orderhanteringsprocessen för att reducera ledtider och klara av ökande efterfrågan. Lean är en välkänd metod för att effektivera flöden i processer. Företagets reservdelslager arbetar inte med Lean i dagsläget. Syftet med denna fallstudie är att undersöka med värdeflödesanalys(VSM) och diskret händelse simulation vilka kritiska punkter och flaskhalsar som existerar i reservdelslagret och målet är att sedan eliminera de med Lean som arbetssätt. Första steget bestod av att kartlägga orderhanteringsprocessen med en processpromenad och sedan analysera de olika aktiviteterna. Detta möjliggjorde en identifiering av flaskhalsar och kritiska punkter. Resultatet presenterar ett nuläge av företaget med en cykeltid på 224 sekunder/artikel och en ledtid på 1549 sekunder/order. En order har även ett genomsnitt på 6 artiklar varav fem ligger på hyllor och en på lagerautomat. Flödet har illustrerats i ett spagettidiagram. I koppling med teorin har ett par förbättringsförslag föreslagits som exempelvis en omstrukturering av artiklar på hyllor utifrån pareto(ABC)-analys. Detta ska reducera ledtiden. Flaskhalsarna som har identifierats är osynkroniserade arbetsrutiner och ineffektiva lagerstrukturer. Därmed har ett antal effektivare framtida lägen med reducerade ledtider föreslagits. Slutsatsen är att Lean principer som ”Jidoka”(ständiga förbättringar) och Just in time(lägre ledtider i princip) kan implementeras med olika lösningar som VMI, IT och automatisering. Fortsatta studier kan utvärdera varje lösning med DES och även jämföra olika kostnader i förhållande till nytta.

  • 285.
    Albani, Giorgia
    et al.
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Perelli Cippo, Enrico
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Croci, Gabriele
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Muraro, Andrea
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Schooneveld, Erik
    STFC-ISIS Facility, RAL, Didcot, United Kingdom.
    Scherillo, Antonella
    STFC-ISIS Facility, RAL, Didcot, United Kingdom.
    Hall-Wilton, Richard J.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. European Spallation Source ERIC, Lund.
    Kanaki, Kalliopi
    European Spallation Source ERIC, Lund.
    Höglund, Carina
    European Spallation Source ERIC, Lund; Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Hultman, Lars
    Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Birch, Jens
    Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping.
    Claps, Gerardo
    INFN, Laboratori Nazionali di Frascati, Via Fermi 40, Frascati, Italy.
    Murtas, Fabrizio
    INFN, Laboratori Nazionali di Frascati, Via Fermi 40, Frascati, Italy.
    Rebai, Marica
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy.
    Tardocchi, Marco
    Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Gorini, Giuseppe
    Dipartimento di Fisica, Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; INFN Sezione di Milano-Bicocca, Piazza della Scienza 3, Milano, Italy; Istituto di Fisica Del Plasma (IFP-CNR), Via Cozzi 53, Milano, Italy.
    Evolution in boron-based GEM detectors for diffraction measurements: From planar to 3D converters2016In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 27, no 11, article id 115902Article in journal (Refereed)
    Abstract [en]

    The so-called '3He-crisis' has motivated the neutron detector community to undertake an intense R&amp;D programme in order to develop technologies alternative to standard 3He tubes and suitable for neutron detection systems in future spallation sources such as the European spallation source (ESS). Boron-based GEM (gas electron multiplier) detectors are a promising '3He-free' technology for thermal neutron detection in neutron scattering experiments. In this paper the evolution of boron-based GEM detectors from planar to 3D converters with an application in diffraction measurements is presented. The use of 3D converters coupled with GEMs allows for an optimization of the detector performances. Three different detectors were used for diffraction measurements on the INES instrument at the ISIS spallation source. The performances of the GEM-detectors are compared with those of conventional 3He tubes installed on the INES instrument. The conceptual detector with the 3D converter used in this paper reached a count rate per unit area of about 25% relative to the currently installed 3He tube. Its timing resolution is similar and the signal-to-background ratio (S/B) is 2 times lower.

  • 286.
    Albano, Emil
    et al.
    Mid Sweden University. Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Wassberg, Jerker
    Mid Sweden University. Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Psykiska reaktioner vid fysiskt trauma: en litteraturöversikt2010Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Fysiskt trauma är ett av de största hälsoproblemen i världen. Fysiska skador står för 16 % av den globala sjukdomsbördan. Med nya träningsprogram och arbetssätt har kvalitén på vården förbättrats men vanligen följer en psykisk reaktion på traumat som kan kvarstå under lång tid. Syfte: Syftet var att belysa vuxna personers psykiska hälsa efter ett fysiskt trauma. Metod: Uppsatsen är en litteraturöversikt som baseras på 13 vetenskapliga artiklar. En induktiv innehållsanalys utfördes på artiklarnas resultat. Resultat: Personer som är med om ett fysiskt trauma kan utveckla psykiska störningar relaterat till skadan, bl.a. PTSD (postraumatiskt stress syndrom), ångest, depression och sömnstörningar. Patienter berättar att de inte får hjälp med deras psykiska hälsa. Diskussion: De psykiska påfrestningarna vid trauma är stora. Det är viktigt för vårdpersonal att vara medveten om detta för att inte negligera ev. sjukdomsutveckling hos patienten. Slutsats: Patienters upplevelser av fysiskt trauma är något som behöver uppmärksammas inom vården. Det är viktigt att dessa patienter och anhöriga får möjlighet träffa personal som är utbildad inom krishantering.

  • 287.
    Albertsson, Linda
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    ”Det är bra att ha ett brett spektra när man tänker matematik så att alla får chansen att vara nyfikna och utforskande”: En intervjustudie om hur och i vilka situationer matematik synliggörs för förskolebarn2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med studien har varit att fördjupa förståelsen för hur förskollärare uttrycker att de synliggör matematik för förskolebarn. Fyra förskollärare har intervjuats och av deras utsagor framgår att förskolebarnen ges möjlighet att utveckla ett brett spektra inom matematik. De uttrycker att barn utvecklar förståelse för bland annat rum, form, läge och riktning, mängd, ordning, tid och förändring samt problemlösning i såväl spontana och planerade situationer. Av resultatet framgår även att förskollärarna upplever utmaningar med att realisera läroplansmålen i matematik. De faktorer som försvårar arbetet är förskollärares villkor, det pedagogiska ansvaret kontra ointresserade barn och okunskap/dåliga erfarenheter hos förskolepedagogerna. Liksom tidigare forskning visar även denna studie att dåliga erfarenheter av matematik kan hindra förskolepedagogernas lust och förmåga att synliggöra matematik för barnen då de förknippar matematik med traditionell skolundervisning. För förskollärarna i denna studie har kompetensutveckling bidragit till en vidare förståelse för matematik. Studien visar att kunskap om att matematik förekommer i förskolans alla sammanhang och med utgångspunkt i förskolebarnens intressen är av vikt för varje barn ska möta matematik i ett meningsfullt sammanhang.

  • 288.
    Albertsson, Lotten
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Karlsson, Ingela
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Konsekvenser av ungdomars sömnbrist: en systematisk litteraturstudie2012Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Many adolescents do not get the sleep they need to maintain good health. Young people's circadian rhythms do not always correspond with the rest of society, times and requirements. The aim of this study was to compile whether there is scientific evidence that sleep deprivation has consequences for adolescent people. Studies were selected from Pubmed, Cinahl and Psychinfo. After quality assessment eleven remained studies that were considered in three themes and six sub-themes. The results showed that adolescents who had lack of sleep had physical consequences such as increased daytime sleepiness and physical symtoms such as increased BMI, blood pressure, headaches and atopic dermatitis. Sleep shortage resulted in psychological consequences with symptoms of increased feelings of stress, nightmares, depression, anxiety and aggression. Social impacts due to lack of sleep impaired school performance, frequent use of stimulants and drugs, and the risk behavior increased. This indicates that district nurses have a major role in drawing attention to young people's sleep habits to prevent illness in primary and school health. A short sleep screening as part of the health survey would involve early detection of adolescents with sleep problems and reduce the risk for development of risk behaviors.

  • 289.
    Albihn, Amalia
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Husveterinären: Responsiv design med WordPress2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Målet med detta projekt har varit att ta fram en responsiv webbplats åt Husveterinären

    AB. Kraven på webbplatsen var bland annat att den skulle skapas i

    WordPress, möjliggöra för kunder att ta del av uppdateringar från veterinärens

    Facebook samt innehålla ett bokningssystem. Projektet genomfördes enligt metoden

    mobile first vilket innebär att man utgår ifrån en liten skärm när man designar

    för att sedan skala upp storleken. Media queries och en flexibel layout

    baserad på relativa enheter har använts för den responsiva designen. För att utvärdera

    webbplatsens användbarhet har användartester genomförts. Resultatet

    är en webbplats som kan användas i enheter med stora såväl som med små skärmar.

    Användartesterna visade på att det var lätt att navigera mellan webbsidorna

    samt att använda både bokningssystemet och kontaktformuläret oavsett skärmstorlek.

    Med WordPress är det dessutom möjligt för veterinären att själv underhålla

    sin webbplats utan att behöva ha kunskaper om att skriva kod.

  • 290.
    Albinsson Eriksson, Catherine
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Johansson, Linda
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Faktorer associerade med låg respektive hög sjukfrånvaro vid Försäkringskassans avdelning för aktivitetsstöd2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The background of our thesis is that the Department of Social Insurance (Försäkringskassan) should lower their absenteeism amongst staff. There is a risk of high absenteeism at several units at the Försäkringskassan and a risk of high costs causes by illness. The purpose of this study was to investigate the employees´ perception on the basis of high and low sick leave at the Försäkringskassan/ activity benefit. The research questions we asked ourselves were;

    • Why do certain units at the Nationellt försäkringscenter/department of Social Insurance have low absenteeism and other units’ high absenteeism?
    • How does leadership affect the employees’ absenteeism?
    • How much does the satisfaction of work environment affect the employees’ absenteeism?
    • How do employees at Nationellt försäkringscenter/activity benefit perceive their physical and psychosocial work environment?

    As a case study organization, the Department of Social Insurance/Nationellt försäkringsccenter/activity benefit has been selected. The results, based on a quantitative survey and a cross-sectional design, show that whether you are working at a unit with low or high absenteeism, many employees have ailments such as pain and stress. This is because the work- environment, requirements and leadership does affect employees’ health. A large number of the employees´ feel dissatisfaction when they go to work and there are many who despair because of the difficulties they face at the workplace. With supported management the employees´ had less insomnia, dissatisfaction and less musculoskeletal disorders.

  • 291.
    Albinsson, Katrin
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Sundin, Jeanette
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Familjens upplevelse att leva med barn som har diabetes.2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 292.
    Albonius, Malin
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology.
    Lannergård, Anna-Stina
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology.
    Should I stay or should I go En studie om arbetstagares avsikt att lämna sin anställning inom socialtjänsten2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 293.
    Albu-jaafer, Ali
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
    Undersökning om kringtjänster i en kombiterminal.2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The transport that uses multiple modes of transportation called Intermodal transport. Due of the advantages of intermodal transport offers, the market for intermodal transport has become increasingly important. The benefits can be both environmentally and economically. This terminal is the destination where intermodal transport takes place. The purpose of a terminal is to combine two different modes of transport. This can lower the total cost of transportation and reduce environmental pollution. To get a successful intermodal terminals there are a few factors that should be considered. One of these factors is the primary services and incidental services terminus offer.

     

    The purpose of this study is to examine the ancillary services that can be applied to an intermodal terminal in order to increase revenues and attractiveness of the facility. To answer the research questions I interviewed four different operators in intermodal terminals in Sweden. In addition there are also two interviews were carried out with the existing operator in Sundsvall intermodal terminal and the operator of the new intermodal terminal. The purpose of these two interviews was to see what the operators have the opportunity or plan and how it works in Sundsvall existing intermodal terminal in the present day. Literature studies that I used in this study have been covered by previous surveys, reports and books. The purpose of literary studies was to identify intermodal terminals and the new services that can be used on the terminal.

     

    The results of this study gave a very good picture of these ancillary services that can be applied in Sundsvall new intermodal terminal to increase the terminal's revenues and attractiveness. Examples of these services, repair factories of trailers and containers, refueling station in connection with the intermodal terminal, cross-docking, by scrolling with the electric locomotives. Besides these services, there are other factors that should be taken into consideration in order to increase revenues and attractiveness of intermodal terminal. These are the technologies that are used in intermodal terminal, IT support, security and location of the intermodal terminal.

  • 294.
    Aldevärn, Birgitta
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Riikonen, Anne
    Mid Sweden University, Faculty of Human Sciences, Department of Nursing Sciences.
    Distriktssköterskans och den äldre personens uppfattningar av hälsofrämjande arbete2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 295.
    Aldrin, Mattias
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology.
    Löfqvist, Alice
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology.
    Ledarskapets betydelse för medarbetarna. En studie om hur sociala föreställningar och ledarskap påverkar medarbetarengagemanget.2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 296.
    Aldén, Mikael
    Mid Sweden University, Faculty of Human Sciences, Department of Education.
    Studenters erfarenheter och upplevelser av informationskompetens i utbildningen2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Students at colleges and universities are to develop information literacy. The purpose of this study is to examine, based on experiences from both campus- as well as distance students, what kind of knowledge is important in order to search for, find and critically use information. The theoretical framework of the study constitutes of sociocultural theory, phenomenographic variation theory and philosophical hermeneutics. The empirical material starts with five semi-structured interviews with students. Following that, a qualitative analysis of content of four selected courses’ syllabus and study guidelines in relation to information literacy was carried out. The result of the study show that students have various degrees of experience of information literacy and also the contents of the chosen syllabus and study guides in relation to information literacy emanates from different perspectives. The knowledge which students develop in connection with the writing of essays and reports is the focus for students to pass their respective course. Therefore, the result of the study problemizes how the knowledge that the students have acquired can be used in their future professional life. This study is a part of an educational project in co-operation with the University Library and the Learning and Resource Centre at the Mid Sweden University regarding the students’ information literacy.

  • 297. Alebaki, Maria
    et al.
    Ioannides, Dimitri
    Mid Sweden University, Faculty of Human Sciences, Department of Tourism Studies and Geography.
    Threats and obstacles to resilience: Insights from Greece's wine tourism2017In: Tourism, Resilience and Sustainability: Adapting to Social, Political and Economic Change / [ed] Joseph M. Cheer and Alan A. Lew, Abingdon, Oxon, UK: Routledge, 2017, 1, p. 132-148Chapter in book (Refereed)
  • 298.
    Alecrim, Viviane
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Andres, Britta
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Zhang, Renyun
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Hummelgård, Magnus
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Blomquist, Nicklas
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Forsberg, Sven
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Engström, Ann-Christine
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Shimizu, Kenichi
    Umeå University.
    Andersson, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Olin, Håkan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Exfoliation of MoS2 for paper based applications2014Conference paper (Other academic)
  • 299.
    Alecrim, Viviane
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Andres, Britta
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Zhang, Renyun
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Hummelgård, Magnus
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Shimizu, Kenichi
    Umeå University.
    Forsberg, Sven
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Andersson, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Olin, Håkan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
    Exfoliated MoS2 for paper based supercapacitors and photodetectors2014In: Collection of Extent Abstracts, 2014, p. 437-438Conference paper (Other academic)
  • 300.
    Alecrim, Viviane
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Mattias, Andersson
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Flexographic ink film’s resistance to inkjet ink’s solvent flow in Hybrid Printing2011In: International Conference on Digital Printing Technologies: Technical Programs and Proceedings / [ed] IS&T, The Society for Imaging Science and Technology, 2011, p. 79-85Conference paper (Refereed)
    Abstract [en]

    Through Darcy’s permeability coefficient, K, one can evaluate the resistance of a flexographic ink film to the solvent penetration of an inkjet ink through a paper substrate. This resistance plays an important role for the print quality in hybrid printing applications where flexography and inkjet printing are combined. If this resistance is too high, K→0, the inkjet ink’s solvent would not penetrate into the substrate and ink smearing would occur resulting in poor printability.

    Paper substrates were printed in a flexographic laboratory printing press. The flexographic printing dot area was varied to evaluate the influence of the full tone and halftone areas on K. These print outs were employed as filters for pigmented inkjet water based inks in a filtration setup. The inks had different pigment’s mean particle size which allowed us to address the influence of this parameter on the filter cake build up and consequently, its impact on K. The dot area had indeed an impact in the ink’s solvent penetration as we observed that the higher the dot area, the lower the K value, meaning that the resistance for ink´s solvent flow was higher. The pigment’s mean particle size also showed influence on K, as we observed that the bigger the pigment particles, the higher the K.

     The substrates were selected after a screening based on inkjet ink absorption speed evaluated through a print rub off test and line width measurements of printed lines.

    We also printed the pre-printed flexography images using a KM 512 piezoelectric printing head and one of the inks used during filtration to evaluate the inkjet printing quality for this hybrid printing approach. We observed wider, less blurry and ragged lines with increased dot area. No ink smearing was observed for the print outs.

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