mdh.sePublications
Change search
Refine search result
1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Bergström, Emelie
    et al.
    Mälardalen University, School of Business, Society and Engineering.
    Bird, Johanna
    Mälardalen University, School of Business, Society and Engineering.
    "ÄTA BÖR MAN, ANNARS DÖR MAN": En studie om möjligheten till implementering av lakto-ovo-vegetarisk och ekologisk kost i Eskilstuna kommuns förskola2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to describe the possibility of implementing a lacto-ovo-vegetarian and organic diet in Eskilstuna municipality’s public preschool. Furthermore the purpose was to identify and describe the most important components involved in the implementation and their influence in the process.  The methods used were a survey based on a literature study. This study includes general information about meat production and consumption and also the use of pesticides in farming. It also brings up the environmental and health effects caused by the previously mentioned areas. The effects caused by meat production and consumption are, among others, greenhouse gas emissions and increased risk of some forms of cancer. The effects of pesticides are not fully stated but present studies indicate that the effects, especially regarding the environment, are negative. The study then narrows and describes the situation and organization in Eskilstuna municipality and finally describes the possible implementation process. The conclusion of the study was that an implementation is possible and a needed step towards a reduction of negative environmental and health impact. Learned habits that are created in an early age can act as a base for present and future challenges. Children will become the consumers of the future. An organic and lacto-ovo-vegetarian diet reduces the amount of antropogenic distributed compounds and greenhouse gases to the environment and can function as an instrument towards the achievement of the Swedish Environmental Objectives. Goals that are set by Eskilstuna municipality can also be favored by an implementation of the suggested diet in the public preschool.

  • 2.
    Granberg, Markus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Joakim, Svartström
    Mälardalen University, School of Innovation, Design and Engineering.
    Tillämpning av utvärdering inom operativt förbättringsarbete2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In the fall of 2014 a literature review and a scientific study of the topic; "... in the extent to which companies in the industry applies the evaluation of continuous improvement” was conducted at Mälardalen University. These studies are the foundation of this thesis.

    A strategic improvement is often divided into smaller steps of improvements at each hierarchical level from the top down through the organization. But if there is no response system that can confirm the results of these improvements back through the organization it is very hard to see if the improvements really are improvements or just changes and a waste of resources. To make it possible for a companies to know if they have achieved their desired future state of such improvements it is required that an evaluation of the operational improvement outcomes is carried out, which can be reflected back through the hierarchy.

    Through an interview study, involving five companies, the thesis aims to examine to what extent well-established companies in Sweden apply evaluation within their operational improvement processes. The thesis also aims to examine what value-added effect that these evaluations have in such companies. The conclusions of the thesis are tied to the analysis of the research literature in the field of improvement evaluation, together with the analysis of the interview study.

    The interview study was decided to be carried out in an overt way but also confidential. A department manager and an operator from each company participated in the interview study which was formed on the basis of the literature review but also on the basis of pre-determined methods of analysis. The interview study was semi-structured in order to allow flexibility in the interview dialogues and to get a better overall understanding of the respondent’s viewpoints. Both a quantitative and a qualitative approach were used in the analysis in order to enable multiple angles.

    To answer the question, to what extent well-established companies in Sweden apply the evaluation within their operational improvement processes, a conclusion is made that the companies did not apply evaluation in any regular or standardized manner. Since the companies apply evaluation in their operational improvement processes in such limited manner there was according to all the respondents no value-added effect of evaluation for the investigated companies. Even though there were no value-added effect the importance of evaluation within the operational improvement processes were clearly expressed by all respondents and the scientific literature analyzed in the thesis.

  • 3.
    Hartman, Steven
    et al.
    Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. Stefansson Arctic Inst Iceland, Humanities Environm Circumpolar Observ, Akureyri, Iceland.
    Degeorges, Patrick
    Ecole Normale Super Lyon, Anthropocene Curriculum, Lyon, France.;Michel Serres Inst, Complex Syst Inst 20, Lyon, France.;INRIA, Datasphere Team, Paris, France.;French Portal Environm Humanities, Salzburg, Austria.;French Minist Environm, Paris, France..
    "DON'T PANIC": Fear and Acceptance in the Anthropocene2019In: Interdisciplinary Studies in Literature and Environment: ISLE, ISSN 1076-0962, E-ISSN 1759-1090, Vol. 26, no 2, p. 456-472Article in journal (Refereed)
  • 4. Jin, H.
    et al.
    Lin, G.
    Han, W.
    Yan, Jinyue
    Mälardalen University, School of Sustainable Development of Society and Technology.
    A Novel Coal-Based Polygeneration System of Power and Liquid Fuel with CO2 Capture2007Conference paper (Refereed)
  • 5.
    Li, H.
    et al.
    Royal Institute of Technology, Stockholm, Sweden.
    Yan, Jinyue
    Mälardalen University, School of Sustainable Development of Society and Technology. Royal Institute of Technology, Stockholm, Sweden.
    Impact of Impurities in CO2-fluids on CO2 Transport Process2006In: Proceedings of GT2006, AMSE Turbo Expo 2006:Power for Land,Sea and Air, 2006, p. 367-375Conference paper (Refereed)
    Abstract [en]

    There are four possible transportation means that could be used to deliver CO2: motor carriers, railway carriers, water carriers, and pipeline. The impurities in CO2-fluids have significant impacts on the thermodynamic properties that will further affect the design, operation and cost of CO2transport. This paper focuses on how impurities in CO 2-fluids affect thermodynamic properties, and how the changes of properties affect CO2transport process. Vapor-liquid equilibrium (VLB), critical point and densities are essential thermodynamic properties for designing a CO2 transportprocess. Studies on these properties will be carried out for CO2-mixtures based on the combinations of the common impurities such as SO2, H2S, CH4, Ar, O2 and N2. Moreover with a real case of pipeline for CO2 transport, the impact of impurities on transport process will be demonstrated in more details.

  • 6.
    Li, Y.
    et al.
    Tsinghua University, Beijing, China.
    Jin, Y.
    Tsinghua University, Beijing, China.
    Borrion, A.
    University College London, London, United Kingdom.
    Li, Hailong
    Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
    Li, J.
    Tsinghua University, Beijing, China.
    Effects of organic composition on the anaerobic biodegradability of food waste2017In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 243, p. 836-845Article in journal (Refereed)
    Abstract [en]

    This work investigated the influence of carbohydrates, proteins and lipids on the anaerobic digestion of food waste (FW) and the relationship between the parameters characterising digestion. Increasing the concentrations of proteins and lipids, and decreasing carbohydrate content in FW, led to high buffering capacity, reduction of proteins (52.7–65.0%) and lipids (57.4–88.2%), and methane production (385–627 mLCH4/g volatile solid), while achieving a short retention time. There were no significant correlations between the reduction of organics, hydrolysis rate constant (0.25–0.66 d−1) and composition of organics. Principal Component Analysis revealed that lipid, C, and N contents as well as the C/N ratio were the principal components for digestion. In addition, methane yield, the final concentrations of total ammonia nitrogen and free ammonia nitrogen, final pH values, and the reduction of proteins and lipids could be predicted by a second-order polynomial model, in terms of the protein and lipid weight fraction. 

  • 7.
    Lodestad, Jessica
    Mälardalen University, School of Business, Society and Engineering.
    Inkludering av hållbar utveckling i undervisningen på en gymnasieskola2013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 8.
    Nehrenheim, Emma
    Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
    Energy and Natural Resources: Introductory Article2013In: Reference Module in Earth Systems and Environmental Sciences / [ed] Scott Elias, Elsevier, 2013Chapter in book (Refereed)
    Abstract [en]

    Renewable energy is distinguished from fossil energy, or non-renewables, by the time it takes to form. Renewable energy uses energy from the sun, winds, waves and other direct energies or forces. Also bio-fuels are considered as renewable, even though there is no balance between the production and e.g. incineration of the material. Compared to fossil fuels, formed from the degradation of prehistoric organic material, biomass formed in modern times at least releases no ancient carbon (as CO2) to the atmosphere. The renewable energy sector is rapidly becoming more feasible due to the increased threat to our planet of global warming caused by burning of fossil fuels.

  • 9.
    Norouzilame, Farhad
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Coordination of international manufacturing networks2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Due to globalisation, many companies have established or acquired production plants worldwide in order to capture the market opportunities that lay beyond their national borders. This has resulted in the emergence of international manufacturing networks (IMNs), which consist of multiple, interdependent production plants with different characteristics within a single organisation.

    Coordination of such networks consisting of multiple plants in different countries is not a simple management task. That is why some companies struggle with it, and turn their global production into a function that hinders their agility and performance; while others turn it into a formidable advantage. Coordination of an IMN requires a company to link and integrate its plants to support its strategic business objectives. A proficient coordination of activities, across multiple plants of an international manufacturing company, leads to competitive advantages.

    Despite its significance, the coordination aspect of IMN management has not been studied sufficiently. Operations leaders in today’s complex manufacturing world require a common language, tailored tools and frameworks for the management of their network. The research area of international manufacturing lacks empirical evidence of how industrial companies are (or could be) coordinated. Therefore, the overall aim of this research is to develop knowledge that improves the coordination of an IMN.

    The data in this study were acquired from case studies carried out on the IMNs of four global manufacturing companies where the majority of data was gathered from a global contract manufacturer headquartered in Sweden. The findings reveal a set of challenges, which influence the coordination of an IMN as one of the main aspects of its management.

    In order to improve IMN coordination, a framework has been developed from the results of the studies performed in this research project, as well as the results of previous research related to IMN management. It is composed of two distinctive parts: (1) preparatory steps, and (2) executional mechanisms.

    The first part of the framework discusses, and provides an insight into, the strategic relevance of coordination, the establishment of an autonomy balance among plants in an IMN, and mapping an IMN. The second part of the framework contains three mechanisms for conducting coordination in an IMN.

  • 10.
    Raza, Mohsin
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Developing Process Design Methodology for Investment Cast Thin-Walled Structures2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Components for engineering systems, such as gas turbines and jet engines operating at high temperature are usually produced in superalloys. The investment casting process is most widely used for manufacturing these components due to the ability of the process to produce parts with complex geometries to close dimensional tolerances. Other processing routes are less advantageous due to high mechanical strength and hardness of these alloys, which make formability and machining difficult even at high temperature. The global requirements for lower fuel consumption and emissions are increasing the demands to lower the weight of cast components in jet engines. The ability to produce components with lower wall thickness will not only help to reduce the cost of production and resource usage but also help to improve the efficiency of engineering systems resulting in lower fuel consumption and reduced emissions of environmentally hazardous gases. However, casting of thin walled components is challenging due to premature solidification in thin sections and long feeding distances often resulting in incomplete filling, cold shuts and shrinkage porosity.

    The castability of thin-sections is dependent upon selection of appropriate values of casting parameters to achieve favorable conditions for the mould filling and solidification. In foundry environment, fluctuation in these targeted values of casting parameters is common due to semi-automated nature of process. The effects of casting parameters on mould filling and defect formation have been widely reported in the literature, however effect of fluctuations in targeted values of casting parameters resulting from typical variation in the foundry is not well documented. Moreover, the origin of process variation and how to manage them in foundries, especially in relation to thin-walled casting has not been well documented. 

    In this work, the common variations in critical process parameters, originating from foundry practices and equipment are identified. The effect of variations and resulting fluctuation in targeted values of casting parameters on castability of thin-walled castings is evaluated. The casting process is simulated by defining boundary conditions which replicate the foundry conditions and properties of foundry materials in a commercial casting simulation software. The effect of fluctuation of casting parameters on castability of thin-walled castings is established by casting trials as well as simulations and the validity of simulation is evaluated. A methodology to design a casting process is established by proposing methods to minimize the process variation as well as using Design of Experiments (DoE) based simulation work to achieve reliability and repeatability in the process.

    It is concluded that the mould temperature, casting temperature and pouring rate are common casting parameters affected by the variation originating from equipment and the casting practices. The variation in these parameters strongly effects the castability of thin-walled sections. The significance of these variations is validated by simulation and it is concluded that the validity of simulation is not only strongly dependent upon the foundry specific material data but also depends upon setting up valid boundary conditions according to the equipment and practices used. It is also concluded that by introducing material data and accurate boundary conditions, simulation can be used as tool to facilitate process development in foundries. A systematic implementation of simulations based on DoE and optimization resulted in significant reduction in process development time.

    The result of this work has been further developed into a process design methodology for investment casting foundries working with casting of thin-walled castings for high temperature applications. The term process design in this work is defined as design and evaluation of gating system as well as identifying optimized values of casting parameters to cast components in foundry.

     

  • 11.
    Sarajlic, Hanna
    Mälardalen University, School of Education, Culture and Communication.
    Är roboten den nya assistenten i skolundervisningen?: En studie som fokuserar på roboten i årskurs F-3 och hur den har blivit allt mer omdiskuterad i grundskolan.2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Skolverket har under år 2017 uppdaterat läroplanen där de har lyft fram ämnet teknik allt mer i undervisningen, och eleverna introduceras allt mer till teknik i grundskolan F-3. Den här studien kommer att fokusera på roboten och vad den innebär som framtidens hjälpmedel i undervisningen. I Sverige har en grundskola F-6 fått möjligheten till att pröva en robot som lärare där resultatet blev blandade reaktioner. Den här typen av robot har förmågan att samverka med människan, genom att den har programmerats till ett önskat beteende. Den har även armar och ben, samt har ett robot utseende. Studien kommer att lyfta fram tidigare forskning som har utförts gällande roboten i grundskolan och undervisningen, vilket tyder på blandade tankar kring roboten. Dessutom kommer utvalda teorier från Ellen Key och Lev Vygotskij att tas fram, eftersom de har en betydande roll för den här uppsatsen. Syftet med den här studien är att få mer kunskap om vad som kan vara betydelsen med en robot i grundskolan med perspektiv från grundskolelärare F-3, och utifrån de förutsättningar som de lärare kan ha. Uppsatsen kommer att lyfta fram intervjuer med fyra grundskolelärare F-3, som uttrycker sina åsikter kring hur de ser på roboten som ett verktyg i klassrummet. Den här studien kan bidra till ett intresse kring roboten och dess deltagande i undervsiningen. Dessutom kan den vara vägledande för alla lärare som arbetar i skolan och med elever i olika årskurser, eftersom roboten kan bli allt större i skolan. Studien kan dessutom agera som en introduktion om roboten och ge en inblick på robotens framsteg i skolvärlden, samt hur den kan bidra med olika företeelser. 

  • 12.
    Vahlström, Camilla
    Mälardalen University, School of Business, Society and Engineering.
    Att arbeta tematiskt, ämnesintegrerat-fördel eller nackdel-sett ur ett lärarperspektiv2013Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf