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  • 3401. Arkharov, A.M.
    et al.
    Grechko, A.G.
    Arkharov, I.A.
    Glavatskih, Sergei
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
    Sensors for liquid film thickness measurement1999In: Refrigeration into the third millennium: proceedings = Le froid à l'orée du 3e millénaire / Twentieth International Congress of Refrigeration, Sydney, Australia, 19 - 24 September 1999, International Institute of Refrigeration, 1999Conference paper (Refereed)
  • 3402.
    Arkhipov, Victor P.
    et al.
    Kazan National Research Technological University.
    Bogdanova, Svetlana A.
    Kazan National Research Technological University.
    Idiyatullin, Zhamil Sh.
    Kazan National Research Technological University.
    Lunev, Ivan V.
    Institute of Physics, Kazan (Volga Region) Federal University.
    Filippov, Andrei
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Dynamic and structural properties of oxyethylated isononylphenols2016In: Mendeleev communications (Print), ISSN 0959-9436, E-ISSN 1364-551X, Vol. 26, no 4, p. 355-357Article in journal (Refereed)
    Abstract [en]

    Diffusion coefficients, dielectric relaxation times and refraction coefficients were measured, and activation energies of translational and rotational mobilities were determined for a series of oxyethylated phenols (neonols AF9-n) p-C9H19C6H4-O(CH2CH2O)nH, n = 4, 6, 8, 9, 10, 12, at different temperatures. The results demonstrated the existence of contraction and transition phenomena that changed the structure of neonol molecules at n ∼ 9 from a zigzag to a meander form.

  • 3403.
    Arkhipov, Victor P.
    et al.
    Department of Physics, Kazan National Research Technological University, Kazan, Russia.
    Filippov, Andrei
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. Institute of Physics, Kazan Federal University, Kazan, Russia.
    The cloud point of aqueous solutions of ethoxylated monoalkylphenols in the individual state and in the presence of electrolytes2018In: Journal of Dispersion Science and Technology, ISSN 0193-2691, E-ISSN 1532-2351, Vol. 39, no 10, p. 1442-1446Article in journal (Refereed)
    Abstract [en]

    The cloud points tcp of aqueous solutions of ethoxylated monoalkylphenols, AF9-n (n = 8,9,10,12), were measured in the concentration (C) range of 0.25-40 wt.%. tcp increased as C decreased at C < 1 wt.%. At 1 < С < 10 wt.%, tcp changed insignificantly; Δtcp/tcp did not exceed 5%. Solutions transformed into the gel state at С > 10-20 wt.% and tcp sharply increased. The dependence of tcp on the length of the oxyethylene chains of ethoxylated nonylphenols at C = 1 wt.% can be described by the equation tcp = b·ln(n-n0), where n0 = 6. The cloud points of aqueous solutions (C = 1 wt.%) of the ethoxylated nonylphenols were measured at different concentrations of NaI, NaCl, NaF, Na2CO3, and Na2SO4 salts. For all of these solutions, tcp decreased in the presence of NaCl, NaF, Na2CO3, Na2SO4 and increased in the presence of NaI. To describe the dependence of tcp on the salt concentration, the equation was suggested, where and tcp are the cloud points of a neat aqueous solution of ethoxylated nonylphenols and of the solution in the presence of electrolytes, respectively.

  • 3404.
    Arkhipov, Victor P.
    et al.
    Kazan National Research Technological University.
    Idiyatullin, Zamil Sh.
    Kazan National Research Technological University.
    Gnezdilov, Oleg I.
    Institute of Physics, Kazan (Volga Region) Federal University.
    Petrova, Ekaterina V.
    Kazan National Research Technological University.
    Filippov, Andrei
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Antzutkin, Oleg
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Molecular self-diffusion and micellar structure in the aqueous solutions of AF9-10 ethoxylated isononylphenol near a cloud point2014In: Mendeleev communications (Print), ISSN 0959-9436, E-ISSN 1364-551X, Vol. 24, no 5, p. 266-268Article in journal (Refereed)
    Abstract [en]

    Sizes of micelles and compositions of aggregates in the aqueous solutions of the nonionic surfactant oxyethylated monoalkyl phenol (neonol AF9-10) were determined by NMR spectroscopy, NMR diffusometry and dynamic light scattering in a wide range of tem- peratures near the cloud point. The cloud point extraction of phenol from aqueous solutions by the surfactant AF9-10 was performed.

  • 3405.
    Arkhipov, Victor P.
    et al.
    Kazan National Research Technological University.
    Idiyatullin, Zhamil Sh
    Kazan National Research Technological University.
    Potapova, Elisaveta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Antzutkin, Oleg
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Filippov, Andrei
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
    Micelles and aggregates of oxyethylated isononylphenols and their extraction properties near cloud point2014In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 118, no 20, p. 5480-5487Article in journal (Refereed)
    Abstract [en]

    We used nuclear magnetic resonance (NMR) spectroscopy and dynamic light scattering (DLS) techniques to study the structural and dynamic properties of micellar solutions of nonionic surfactants of a homologous series of oxyethylated isononylphenols - C9H19C6H 4O(C2H4O)nH, where n = 6, 8, 9, 10, or 12 - in a wide range of temperatures, including cloud points. The radii of the micelles and aggregates, as well as their compositions at different concentrations of surfactant, were determined. Using aqueous phenol solutions as a model, we studied the process of cloud point extraction with oxyethylated isononylphenols

  • 3406.
    Arkhipov, Victor
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Potapova, Elisaveta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Antzutkin, Oleg
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Filippov, Andrei
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
    Micelle structure and molecular self-diffusion in isononylphenol ethoxylate–water systems2013In: Magnetic Resonance in Chemistry, ISSN 0749-1581, E-ISSN 1097-458X, Vol. 51, no 7, p. 424-430Article in journal (Refereed)
    Abstract [en]

    The structure and dynamic properties of micellar solutions of nonionic surfactants of a series of isononylphenol ethoxylates, C9H19C6H4O(C2H4O)nH (where n = 6,8,9,10, and 12), were studied by NMR diffusometry, dynamic light scattering, and viscosimetry. The sizes of the micelles were determined for different surfactants and at different surfactant concentrations. The numbers of water molecules bound by a micelle and by one oxyethylene group of the surfactant were estimated

  • 3407. Arkivuo, Teija
    et al.
    Lennertz, Dominique
    Premenopausala kvinnors upplevelser efter hysterektomioperation: en litteraturstudie2004Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3408. Arlehed, Petter
    et al.
    Eriksson, Fredrik
    Concept study of individual front suspension2007Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Volvo Buses AB operates on a global market selling products all over the world. To meet customer demands on different markets VBC (Volvo Bus Corporation) must have vehicles competitive in terms of cooping with different environmental demands, i.e. different road conditions. Their coaches, or tourist busses, are designed and built to be experienced as high quality and of course be comfortable to travel in, no matter the conditions. Comfort is a subjective experience for passengers, difficult to define and is often experienced as a verification of the quality. However, it originates from the dynamics of the bus which derives, among other things, from a vehicles suspension. In order to increase the comfort on their future coaches, Volvo wishes to use a new concept for their individual front suspensions. An individual suspension is standard on cars today but not on busses which often use rigid axles. An individual suspension provides superior comfort compared to rigid axles and is therefore the natural choice in coaches. Volvo is looking for a new concept regarding a new individual front suspension that is possible to use in their future coaches. The studied front suspension in this thesis is an suspension developed by Prevost Car Inc. Prevost Car Inc. is a north American company, own by VBC. The objectives are to build a model, representing Prevost’s IFS, using MSC ADAMS/car and be able to analyze the suspension with the strive to improve the comfort, primarily in longitudinal direction. It is the accelerations of the bus chassis, especially in longitudinal direction, that decides whether a bus is experienced as comfortable or not. Therefore, several physical comfort tests on a bus with the correct IFS are performed in order to collect data regarding the acceleration values. This data is used to tune the ADAMS model and to replicate the roads on which the tests are performed. Furthermore, this enables the simulation model to be verified compared to the real IFS. The goal in this thesis is to, relative original model settings, decrease acceleration values in the chassis. Results from a great number of simulations show on a significant improvement regarding the longitudinal comfort. Using a new developed setup, regarding component properties and design, the acceleration levels are proved to be decreased with up to 17 % relative original setup of the IFS.

  • 3409. Arlock, Boel
    Barnbadrum: detaljer och tekniska lösningar2002Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3410. Arlock, Boel
    Fästanordning till balk: konstruktion och FEM-analys2005Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 3411. Arm, Maria
    et al.
    Lindeberg, Johanna
    Rådin, Åsa
    Öhrström, Anna
    Backman, R
    Öhman, Marcus
    Boström, D
    Gasbildning i aska2006Report (Other academic)
  • 3412.
    Arm, Maria
    et al.
    Statens Geotekniska Institut.
    Vestin, Jenny
    Statens Geotekniska Institut.
    Lind, Bo
    Lagerkvist, Anders
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Nordmark, Desiree
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
    Hallgren, Per
    Skogsstyrelsen.
    Pulp mill fly ash for stabilization of low-volume unpaved forest roads: field performance2014In: Canadian journal of civil engineering (Print), ISSN 0315-1468, E-ISSN 1208-6029, Vol. 41, no 11, p. 955-963Article in journal (Refereed)
    Abstract [en]

    Increased temperatures and rainfalls will give more settlements and less bearing capacity in gravel roads, which will have implications for the forestry. Pulp mill fly ash without additives was used for stabilizing the road base of a low-volume gravel road. A two-year monitoring of the road was conducted, including measurements of achieved ash content, density, water infiltration capacity, and load bearing capacity. The results showed that the ash-stabilized sections performed better than conventionally upgraded sections and also achieved increased bearing capacity over time. Hydration of the fly ash increased the stiffness and decreased the permeability of the road base. The differences were more pronounced during spring thaw. Best performance was achieved in the section with thicker ash stabilized layer.

  • 3413.
    Armada, Sergio
    et al.
    Department of Corrosion and Tribology SINTEF, Materials and Chemistry, Trondheim.
    Prakash, Braham
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
    Special issue: Selected papers from the 15th Nordic Symposium on Tribology2013In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 227, no 8, p. 809-Article in journal (Other academic)
  • 3414.
    Arman, S.Y.
    et al.
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology.
    Omidvar, H.
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology.
    Tabaian, S.H.
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology.
    Sajjadnejad, M.
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology.
    Fouladvand, Shahpar
    Department of Mining and Metallurgical Engineering, Amirkabir University of Technology.
    Afshar, Sh.
    Department of Chemistry, Iran University of Science and Technology.
    Evaluation of nanostructured S-doped TiO2 thin films and their photoelectrochemical application as photoanode for corrosion protection of 304 stainless steel2014In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347Article in journal (Refereed)
    Abstract [en]

    Undoped and S-doped TiO2 thin films were prepared on titanium substrate through a sol–gel method. The photoelectrochemical behavior of S-doped TiO2 thin film (as photoanode) was studied. The effect of Sulfur doping on structural, optical and morphological properties of TiO2 was studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), FT-IR, UV–ViS and FE-SEM. Superiority of the S-doped TiO2 film was shown through taking advantage of linear sweep voltametry measurement, open-circuit potential of 304 stainless steel as well as potetiodynamic polarization technique. Results showed that S-doped TiO2 thin film is an efficient photoanode with long term stability (several hours).

  • 3415. Armfield, Elisabeth
    et al.
    Guo, Angelika
    Erfarenheter och attityder vid vård av papperslösa: En integrerad kunskapsöversikt2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3416. Armholt, Magnus
    Implementation of the ZigBee network layer and evaluation of route discovery initiation2006Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The ZigBee specification is a standard for low-power consuming wireless devices. The ZigBee protocol stack has a layered structure containing four distinct layers of which the two lowest layers are defined by the IEEE 802.15.4 standard. Building on this base the ZigBee standard defines a network layer and an application layer. Especially in science and education it is of use to implement each layer independent of the other layers. This makes it possible to compare different implementations and to use software from different manufactures. The network layer of the standard defines an on-demand routing protocol similar to the AODV routing protocol. Initiating route discovery in an on-demand protocol is important in order to keep routes up to date but it may not be done to often because of power consumption. This thesis describes the work of implementing a subset of the network layer in a strict layered approach and evaluates route discovery initiation. It is found that the hardware used in this work makes it not preferable to implement a strict layered network layer, because of timer issues. Having compromissed the strict layered approach, measurements performed in non-beaconing networks indicates a throughput of about 50Kbits/s. However, if no packet loss is tolerated the throughput is more like 40Kbits/s. In the evaluation of route discovery initiation it is found that the number of times route discovery is initiated can be slightly reduced by making use of the link quality indicator for the link between a parent and a router-capable child.

  • 3417. Armstad Johansen, Stian
    et al.
    Sellberg, Hans
    Får patienten den information de behöver om sövningen inför en operation?2008Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3418. Arndt, Madeleine
    Patienters upplevelse av oro inför operation2014Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3419.
    Arndt, Sonja
    et al.
    University of Waikato.
    Alerby, Eva
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Westman, Susanne
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Higher education in transformation: Spaces, places and world-wide rooms2016In: Annual PESA Conference, Coral Coast, Fiji, December 8-12 2016, 2016Conference paper (Refereed)
  • 3420.
    Arndt, Sonja
    et al.
    Te Kura Toi Tangata Faculty of Education, The University of Waikato, Hamilton.
    Alerby, Eva
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Westman, Susanne
    Luleå University of Technology, Department of Arts, Communication and Education, Education, Language, and Teaching.
    Places and Spaces for Embodiment: Developing an Aotearoa New Zealand/Sweden Partnership2017In: Realising Innovative Partnerships in Educational Research: Educational Partnerships and Collaborations / [ed] Rachel McNae, Bronwen Cowie, Rotterdam: Sense Publishers, 2017, p. 291-300Chapter in book (Refereed)
    Abstract [en]

    Put together three researcher/lecturers at a philosophy of education conference and what do you get? Our first meeting in Chiayi, Taiwan at the Philosophy of Education Society of Australasia (PESA) conference in 2012 is responsible for our Aotearoa New Zealand/Swedish partnership, which is now an internationally funded research project

  • 3421. Arnehed, Sebastian
    et al.
    Emilsson, Henrik
    Stadsförtätningens teorier och konsekvenser: Analys av kvaliteter och förtätningspotential för Luleå centrum2011Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Urban densification has for many years been the common norm for achieving the sustainable city. The current debate, appearing in the literature review is focused on how urban sprawl could be stopped and how cities instead will be planned with sustainability as the ground ideal. But what are the reasons for the belief that the dense city is the same as the ecologically, economically and socially sustainable city? The aim of this study is partially to clarify the current debate within the research area and to make an effort to apply the theories to the city centre peninsula of Luleå. The aim is to encourage the dialogue and the discussion about urban densification in Luleå.The literature review deals with a diversity of factors related to densification, such as travelling distance, energy consumption, noise pollution, social sustainability among others. The dense city presents a number of advantages based on the literature review, such as reduced consumption of energy per inhabitant and shorter travelling distance. These studies, previously mainly done on international larger cities, have also been proved to be true for smaller Scandinavian cities. A correlation that previously has been questioned. That the dense city is the same as a city without access to green space is described in several studies as a misunderstanding. In dense urban environments, high quality green spaces can compensate quantity. Several studies show that it is quality and not quantity that determines how people perceive the availability of good urban spaces. A majority of the literature also says that the social life within the city is strengthened with an increased density. There is however some disagreement that the planning has to take into consideration, including the risk of an increasing segregation when new development occurs at high value land.The literature review concludes that urban densification contributes to a sustainable development. Urban densification is also based on changes in the existing city structure, a structure that in many cases are complex and specific to the location. To create an awareness of the paths, nodes and public places within the city that are worth preserving or enhancing a sociotope map has been developed for the planning area. Sociotope mapping composes the basis for the discussion about urban densification and its impact on different urban spaces.In order to study the possibility for densification in the different parts within the planning area, a ‘densification rose’ has been made. The densification rose indicates the need, pressure, freedom and space for densification of an area. The result of the densification rose shows the different strengths, weaknesses and opportunities associated with densification, for the different areas. In Luleå it can be established that all different parts within the city centre peninsula, have their unique conditions, with both relatively high as well as low potential for densification.To further clarify the densification potential for the area, current exploitation rates has been calculated. The rates are then, together with the building typology, used in a model to calculate the average space of densification. The results show that space of densification for the city centre peninsula is between 5-14 % with a possible increase in the exploitation rate with between 3-10 %.In order to present a suggestion for urban densification for the city centre of Luleå, different types of densification methods has been described and how these could be applied to the city, both in plan and illustrations. Based on both the theoretical part and the analysis tools, we have made a suggestion for the development of both specific places and larger areas.

  • 3422.
    Arnehed, Sebastian
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Johansson, Charlotta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Cykling och gående vid större vägar: Resultat av enkät2012Report (Other academic)
    Abstract [sv]

    Denna rapport är en del i projektet ”Cykling och gående vid större vägar” och avser den enkät som genomförts för att studera resvanor, trygghet, säkerhet samt framkomlighet längs större vägar med fokus på gående och cyklister hos boende längs eller vid de aktuella platserna. Syftet med enkätundersökningen är att belysa hur fotgängare och cyklister upplever framkomligheten, säkerheten samt tryggheten längs de utvalda platserna i undersökningen. Syftet är även att om möjligt dra generella slutsatser om effekten av olika fysiska åtgärder som genomförts för att underlätta för gående och cyklister. Sammanlagt har tio vägsträckor och platser valts ut för enkätundersökningen. Platserna är lokaliserade från Luleå i norr till Ystad i söder. Urvalet har skett med åtanken att ge en representativ översikt över olika lösningar för att antingen färdas längs med eller korsa en större väg, till fots eller med cykel, med målet att ha en spridning över landet med olika klimat.Urvalet av respondenter har skett genom en geografisk avgränsning kopplad till de aktuella sträckorna och platserna. Till varje hushåll skickades två enkäter som två vuxna eller ungdomar i åldrarna 15 - 17 år ombads att fylla i. Enkäten skickades till 2535 hushåll och totalt svarade 1145 personer på enkäten ( svarsfrekvens 22,6 % per antaget antal respondenter, och 44,2 % per hushåll).Respondenterna utrycker generellt en oro för sin säkerhet och trygghet. De som är mest nöjda är de som bor vid och färdas längs en väg där separeringen sker med räcke, vilket var förväntat. De som är mest oroliga är de som bor vid en väg där separeringen sker genom målad kantlinje, vilket inte var förväntat. De är något mer oroliga än de som bor vid väg utan åtgärder för GC-trafik annat än bred vägren. I fortsatta arbete bör det därför undersökas hur fordonsflödet och hastigheterna påverkar respondenternas trygghet, dvs om det egentligen är de aspekterna man är orolig för och att åtgärderna inte har räckt till för att kompensera för hastigheterna. Det bör även undersökas om målningen inte efterlevs av fordonsförarna, samt hastighetsefterlevnad, vilket respondenternas svar indikerar.Vad gäller tillfällena när man korsar vägen är respondenterna som bor vid väg utan åtgärd förvånande nog mer trygg när de korsar vägen, än de som korsar vägen genom öppning i refug eller mitträcke. Även i detta fall bör fortsatta arbete därför undersöka hur fordonsflödet och hastigheterna påverkar respondenternas trygghet, dvs om det egentligen är de aspekterna man är orolig för och att åtgärderna inte har räckt till för att kompensera för hastigheterna. Det bör även undersökas hur fordonsförarna efterlever hastigheterna på platsen samt hur interaktionen mellan fordonsförare och oskyddade trafikanter går till på platserna.Det finns således anledning att fortsätta studera effekterna av de olika åtgärderna som har använts i vägmiljöer för att öka de oskyddade trafikanternas trygghet och rörlighet eftersom respondenterna tydligt uttrycker oro för trafikolycka, trots att olika åtgärder har använts för att öka tryggheten.

  • 3423.
    Arnehed, Sebastian
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Johansson, Charlotta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Öberg, Maria
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
    Underlag till trafikstrategi för Kiruna kommun: för hållbart resande, stadsomvandling och kallt klimat2013Report (Other academic)
    Abstract [sv]

    Aktuellt dokument är ett första steg i att formulera och ta fram en uppdragsbeskrivning gällande en trafikstrategi för Kiruna kommun. Dokumentet beskriver de huvudsakliga delarna för såväl processen med att utarbeta en trafikstrategi som det faktiska innehållet. Kiruna kommun har hittills inte varit delaktiga i denna del av processen, men är formellt ansvariga i ett fortsatt arbete.

  • 3424. Arneland, Rebecka
    et al.
    Steigert, Anna
    Jämställdhet i klassrummet: en undersökande tidsstudie i ämnena historia och religion2006Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3425. Arnerfors, Mathias
    Key account management in a business-to-business market2000Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In today's business world it becomes more and more important for selling organizations to have deeper relations with its customers and especially its key accounts. One tool in working with industrial relationships is Key Account Management. This concept is an approach for selling companies to build a portfolio of loyal key accounts by offering them a product/service package tailored to their individual needs. The purpose of this thesis was to investigate how an industrial company can utilize Key Account Management. In order to examine the purpose a multiple case study approach was used, by looking at different business areas within a Swedish industrial manufacturing company that is thinking of implementing Key Account Management. Based on these case studies, a key account can be described from the strategic importance of an account and the difficulty of managing the account, and that this description is individual for each business area. This research shows that training in Key Account Management is needed for those who are handling the key accounts, and that all other training is individual. This study also talks about what is important for a successful adoption of Key Account Management.

  • 3426. Arnerlöf, Linn
    Möjlighet till reducerad förlust av bly till skärsten vid sekundär blyproduktion2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 3427. Arnesson, Alexander
    et al.
    Christensson Persson, Hanna
    Upplevelser av träning hos personer med multipel skleros2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3428. Arnesson, Claes
    Opportunities for mobile solutions in the process industry: a case study at SSAB2004Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master’s thesis purpose is to find opportunities for mobile solutions within the process industry and describe the specific requirements on the equipment that arises in this type of industry. Another objective is to study business opportunities with respect to mobile solutions. The communication devices that are used at SSAB are cell phones, computers, short-range radios, intercoms and ordinary telephones. These different communication systems create confusion and inefficient communication. If a Push-to-Talk solution is used the number of different communication systems needed would be far less but the same services would still be provided. Furthermore, the maintenance personnel as well as SSAB’s documentation could benefit from a Smart Phone solution from which the enterprise resource planning system can be accessed. The work tasks as well as the rough environment at SSAB create a need for an all-in-one device that can withstand heavy abuse but nevertheless fit into the pocket of the working clothes. Business opportunities with these solutions arise from a more efficient communication due to a fewer number of systems as well as from a more appropriate system. Better documentation and more efficient repairs are also benefits which can occur from a Smart Phone solution.

  • 3429. Arnesson, Daniel
    et al.
    Leonardson, Joakim
    Fysisk klassrumsmiljö: en hermeneutisk bildstudie av hur gymnasieelever och lärare upplever samt önskar sig sin fysiska klassrumsmiljö2007Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3430. Arnesson, Fredrik
    et al.
    Hägg, Jennie
    Vänortssamarbete för kompetensutveckling: en fallstudie av vänortssamarbetet mellan Vännäs och Cameri2004Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 3431. Arnesson, Fredrik
    et al.
    Rydell, Andreas
    Earned Value Management: en metod för projektstyrning2006Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 3432. Arnesson, Malin
    et al.
    Garcia Toro, Marlene
    "Jag mår mycket bättre när jag dansar": En studie om hur danselever på gymnasieskolan upplever delaktighet, prestationskrav och betyg2014Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 3433. Arnfjell Hurtig, Barbro
    et al.
    Olsson, Anneli
    Rönngren, Jessica
    Musik och matematik: klassisk musik till matematiktester1999Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3434.
    Arngren, Elin
    et al.
    Luleå University of Technology, Department of Health Sciences.
    Holma, Mia
    Luleå University of Technology, Department of Health Sciences.
    Datortomografi vid diagnostisering av ockulta höftfrakturer som inte syns på konventionell röntgen: En litteraturöversikt2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: A hip fracture is occult when it is not visible on plain x-rays. About five percent of all cervical hip fractures are occult. To diagnose the occult hip fracture, the patient must undergo further examination with another modality. Computed tomography can be such a potential examination since it gives a clear picture of the patient’s anatomy. Delay to surgery increases the risk of mortality while the patient is hospitalized, and it is therefore important that the patient get the diagnosis as quickly as possible. Purpose: To create an overview of the knowledge situation regarding computed tomography in the diagnosis of occult hip fractures not detected by plain x-rays. Method: The study was conducted as a general literature review. Ten scientific articles of quantitative method were included. Results: Computed tomography did not detect all occult hip fractures and in many cases patients had to undergo further examination. The common meantime of the sensitivity based on four of the scientific articles was 83.3 % and the common specificity was 99.15 %. Of the remaining six articles computed tomography missed a total of 15 occult hip fractures in 595 patients. The meantime after the first examination with plain x-ray until the patient received a computed tomography differed between the patients and studies. The fastest meantime was 3 hours and 42 minutes. Conclusion: Computed tomography does not detect all occult hip fractures, and in many cases patients need to undergo further examination for the correct diagnosis.

  • 3435. Arnlund, Emil
    Design av cykelhjälm för studenter: med hänsyn till studenters krav och önskemål2001Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3436.
    Arnold, André
    et al.
    Eidgenossische Technische Hochschule Zurich.
    Laue, Jan
    Eidgenossische Technische Hochschule Zurich.
    Influence of unloaded walls on the stress distribution under a raft foundation2009In: Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering, 2009, Vol. 2, p. 1124-1127Conference paper (Refereed)
    Abstract [en]

    For the calculation of flexible rafts, the rising structure is often not taken into account on the design with the exception of the load transfer location. Mostly, a uniform stress distribution is assumed below a footing, even though this is only valid if the footing is totally flexible and is able to follow the movement of the soil at every point. The assumption of flexibility is dependent on load and stiffness of the footing while already both, the flexible raft made of concrete as well as the structure itself are influencing the stiffness of a raft. Local stiffening of the foundation, e.g. by locally increased thickness of the raft or flexural rigid connected walls, is not taken into account in the design approach. In this contribution centrifuge model tests are carried out for different raft systems to explore the development of the stress distribution under a flexible raft foundation. Focus is given to identify the influence of the stiffening effects of outside walls for structures mostly loaded via middle columns. © 2009 IOS Press.

  • 3437.
    Arnold, André
    et al.
    Institute for Geotechnical Engineering, ETH Zurich.
    Laue, Jan
    Institute for Geotechnical Engineering, ETH Zürich.
    Loading behaviour of flexible reaft foundations in ull scale tests and centrifuge models2013In: / [ed] Delage et al, 2013, p. 879-882Conference paper (Refereed)
  • 3438.
    Arnold, André
    et al.
    Institute for Geotechnical Engineering, ETH Zurich.
    Laue, Jan
    Institute for Geotechnical Engineering, ETH Zurich.
    Physical modelling and full scale measurements on soil-structure interaction of flexible raft foundations2010Conference paper (Refereed)
  • 3439.
    Arnold, André
    et al.
    Institute for Geotechnical Engineering, ETH Zurich.
    Laue, Jan
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Institute for Geotechnical Engineering, ETH Zurich.
    Espinosa, T.
    Institute for Geotechnical Engineering, ETH Zurich.
    Springman, Sarah M.
    Institute for Geotechnical Engineering, ETH Zurich.
    Centrifuge modelling of the behaviour of flexible raft foundations on clay and sand2010In: Physical Modelling in Geotechnics: Proceedings of the 7th International Conference on Physical Modelling in Geotechnics 2010, ICPMG 2010, 2010, Vol. 1, p. 679-684Conference paper (Refereed)
    Abstract [en]

    In recent decades, foundations used for housing constructions changed from strip foundations to flexible rafts including the whole ground floor. Strip foundations were usually calculated with the assumption of an even stress distribution, and this is often applied to modern flexible raft foundations. The result of these calculations does not represent reality and may often lead to inappropriate design and unexpected structural damage. Physical model tests have been carried out to study the stress distribution on different foundation types on a variety of soils, and under various loading scenarios. A better understanding of the stress distribution between foundation and soil is possible due to normal stress measurements at the interface. For working loads, a clear difference in stress transfer between foundation and clay and sand soils could be observed while a change in depth of soil or shallow inclined bedrock has less effect on the stress distribution at the interface. © 2010 Taylor & Francis Group, London.

  • 3440. Arnrud, Jon
    et al.
    Fjellner, Nina
    Användandet av det svenska friskvårdsbidraget och dess relation till välbefinnande hos de anställda på ett företag: En kvantitativ enkätstudie2011Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3441. Arnström, Jonas
    et al.
    Hällgren, Mattias
    Comparison of SAP R/3 and a non integrated manufacturing planning and control system: a study at SCA Hygiene Products, England2000Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Production planning is probably the least understood aspect of manufacturing planning and control. However, payoffs from a well-designed production planning system are large. The aim of production planning process is to produce only as much as required, but at the same time maintain the productivity levels of resources. The ability to account for variabilities in the production process plays a key role in effective production planning. Most companies use software packages to simplify the production planning process. These systems are called manufacturing planning and control systems (MPC systems). Enterprise Resource Planning (ERP) is a strategic tool, which equips the enterprise with necessary capabilities to integrate and synchronise isolated functions into streamlined business progresses. The purpose of this research is to compare SAP R/3 with MPC systems and then identify possible advantages. The identified advantages are the level of integration, real time processing and a very high number of functionalities.

  • 3442. Aronsson, Amanda
    Utveckling av studieplats anpassad för bibliotek2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3443. Aronsson, Andreas
    Design, modeling and drafting of composite structures2005Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In January 2005 Volvo Aero Corporation (VAC) is about to enter an extensive EU-project regarding jet engine structures made of composite material. In conjunction with this project a number of students have been involved in a pre-study. As a masters thesis in mechanical design at Luleå university of technology a study of how to design, model and define composite components has been conducted. The overall aim is to find an effective way to work with components made out of composite material. A working method has been developed, evaluated and tested. The working method is a result of cooperation with Henrik Karlsson whose thesis is called “Evaluation of FE-software for mechanical analysis of composites”. The method is presented in this thesis together with explanations of the different stages in the following chapters. Different methods of modeling the internal structure of the composite have been tested. Furthermore studies of how different CAD tools can speed up and make the modelling of the internal material structure less time consuming has been performed. Standards of how to define parts made out of composite material on engineering drawings is also presented. Standards are used to embody generally accepted 'best practice' in composite design within several industries. To be able to visualize the different stages in the working method, a model of a ring-strut-ring configuration have been used. During the work different design guidelines have been collected and are presented in this thesis.

  • 3444. Aronsson, Anna
    et al.
    Själin, Hanna
    Smärtminne och copingstrategier för smärta hos barn: litteraturstudie i ett sjukgymnastiskt perspektiv2005Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 3445. Aronsson, Elin
    et al.
    Zetterlund, Johan
    Arbetsgivarens primära förhandlingsskyldighet2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 3446. Aronsson, Ellenor
    et al.
    Rönnberg, Christian
    Immateriella tillgångar: vad svenska företag och revisorer anser om IAS 382007Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 3447. Aronsson, Ellenor
    et al.
    Wassermann, Åsa
    Innovation och kultur: faktorer i en kultur som påverkar innovation2008Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 3448.
    Aronsson, Gunnar
    Luleå tekniska universitet.
    A new finite element method for estimating the penetration of frost into ground1985In: Free boundary problems: theory and applications, Boston: Pitman , 1985, p. 318-329Chapter in book (Other academic)
  • 3449.
    Aronsson, Gunnar
    Luleå tekniska universitet.
    Construction of singular solutions to the p-harmonic equation and its limit equation for p=∞1986In: Manuscripta mathematica, ISSN 0025-2611, E-ISSN 1432-1785, Vol. 56, no 2, p. 135-158Article in journal (Refereed)
    Abstract [en]

    Here, all solutions of the form u=rkf(φ) to the p-harmonic equation, div(|∇u|p-2∇u)=0, (p>2) in the plane are determined. One main result is a representation formula for such solutions. Further, solutions with an isolated singularity at the origin are constructed (Theorem 1). Graphical illustrations are given at the end of the paper. Finally, all solutions u=rkf(φ) of the limit equation for p=∞, ux2uxx+2uxuyuxy+uy2uyy=2, are constructed, some of which have a "strong" singularity at the origin (Theorem 2).

  • 3450. Aronsson, Gunnar
    Linear control theory applied to a minimum-maximum problem1983In: Journal of Approximation Theory, ISSN 0021-9045, E-ISSN 1096-0430, Vol. 38, no 1, p. 90-100Article in journal (Refereed)
    Abstract [en]

    A linearisation technique and well-established linear control theory are used to derive relevant information concerning the extremal functions in a minimum-maximum problem

66676869707172 3401 - 3450 of 62955
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