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  • 1.
    Aakko, Noora
    et al.
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Öngörür, Gazal
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Kraften av beröring: Beröring som komplementär metod för att minska stress på arbetsplatsen2014Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Arbetsmarknadens förändringar i form av högre arbetstakt, tillfälliga anställningar och krav på flexibla arbetsvillkor, gör att allt fler upplever stress i arbetslivet. Långvarig stress medför stora hälsorisker för individen. Eftersom många av dagens sjukskrivningar beror på stressrelaterade sjukdomar, såsom depression och utmattning är det viktigt att studera metoder för stresshantering på arbetsplatsen. Beröring i form av massage kan minska stress hos individer samt fungerar som ett komplement i behandlingen för stressrelaterade sjukdomar. Ett fältexperiment med 28 tjänstemän utfördes för att undersöka om en kortvarig massage på arbetstid kunde inverka positivt på den arbetsrelaterade stressen jämfört med en avslappningsövning och vanlig rast. Studien visade signifikant minskning av stressnivån efter massageinterventionen. Resultatet ger en antydan om att upplevelsen av stress går att reducera med hjälp av fysisk beröring. Stickprovets storlek samt förväntnings- effektens inverkan på resultatet diskuteras.

  • 2.
    Aarons, Gregory
    et al.
    Univ Calif San Diego, La Jolla, CA 92093 USA.;Child & Adolescent Serv Res Ctr, San Diego, CA USA..
    Green, Amy
    Univ Calif San Diego, La Jolla, CA 92093 USA..
    Moullin, Joanna
    Univ Calif San Diego, La Jolla, CA 92093 USA.;Univ Technol Sydney, Sydney, NSW, Australia..
    Ehrhart, Mark
    San Diego State Univ, San Diego, CA 92182 USA.;Univ Cent Florida, Orlando, FL 32816 USA..
    Ducarroz, Simon
    Ctr Reg Prevent Canc, Ctr Hygee, St Priest En Jarez, France..
    Sevdalis, Nick
    Kings Coll London, London, England..
    Hasson, Henna
    Karolinska Inst, Stockholm, Sweden.;Stockholm Cty Council, Ctr Epidemiol & Community Med, Stockholm, Sweden..
    von Thiele Schwarz, Ulrica
    Mälardalens högskola, Akademin för hälsa, vård och välfärd, Hälsa och välfärd. Karolinska Inst, Stockholm, Sweden.
    James, Sigrid
    Univ Kassel, Kassel, Germany..
    Willging, Cathleen
    Pacific Inst Res & Evaluat, Behav Hlth Res Ctr Southwest, Albuquerque, NM USA..
    Fostering international collaborations in implementation science2018Inngår i: Implementation Science, ISSN 1748-5908, E-ISSN 1748-5908, Vol. 13Artikkel i tidsskrift (Annet vitenskapelig)
  • 3.
    Aarts, Marcel
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Using Kinect to interact with presentation software2013Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [en]

    Imagination Studios is a company specialized in motion capturing and animation. Part of their daily business is working at trade shows where they have a booth to keep close contact with existing customers and also to find new ones. However, usually only two to three people will be working at the booth, and frequently, these people will be in meetings with potential customers. During a time like this, nobody is free to attend to other people checking out the booth. This can result in a potential loss of a new customer. This project seeks a way to alleviate that problem.The idea behind this project was to create an application that trade show visitors can interact with in a playful and innovative way while also giving them a feel of what Imagination Studios is all about while looking for information about the company. To do this it was decided to let users interact with the system by using a Microsoft Kinect. The Kinect allows for easy implementation of a user interface based on motion capturing while also being very cost effective. A new user interface was to be designed as well, without copying already existing solutions and without simply expanding a traditional UI with new elements. To achieve this several design sketches were made, and the most interesting ones were then turned into storyboards. These were then used to decide on the final design, which was then elaborated on by use of video sketches and a collage in Adobe Photoshop.Several tools were used during the actual implementation. For the actual visualization and graphical design, the Unreal Engine 3 in combination with UDK was decided upon. To connect Kinect and Unreal Engine 3, a third party addon called NIUI which makes use of the open source SDK OpenNI was used. For ease of debugging and programming in Unrealscript, the programming language used by the Unreal Engine 3, an addon for Microsoft Visual Studio 2010 called nFringe (Pixel Mine, Inc., 2010) was used.

  • 4.
    Aasen, Linn
    et al.
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Thunberg, Maria
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    En utvärdering av arbetspsykologiska testet Shapes med test-retestmetod2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Många rekryteringsmetoder som används i dag, som CV och referenstagning, har enligt studier låg validitet, däremot visar många studier att personlighet är stabilt över tid och därför är en mer valid prediktor för att kunna predicera arbetsprestation. Studiens syfte var att undersöka Shapes, ett internetbaserat personlighetstest, och dess arton kompetensdimensioner med test-retest utifrån tre frågeställningar. En datainsamling med 91 deltagare (29 män och 62 kvinnor) gjordes vid två tillfällen med tre veckors mellanrum. Deltagarna delades upp i kön- och åldersgrupper för att se skillnad över tid inom grupperna. Medelvärdesskillnader och korrelationer över tid jämfördes där resultatet visade att det fanns positiva samband mellan båda testtillfällena på samtliga dimensioner. Sju av de arton dimensionerna hade skillnader på medelvärde från testtillfälle ett och testtillfälle två. Detta skulle kunna bero på att Shapes inte är tillräckligt tillförlitligt för att mäta dessa dimensioner eller att dessa dimensioner inte är stabila över tid.  

  • 5.
    Abas, N.
    et al.
    University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan.
    Kalair, A. R.
    COMSATS University Islamabad, Islamabad, Pakistan.
    Seyedmahmoudian, M.
    Swinburne University, Australia.
    Naqvi, M.
    Karlstad University.
    Campana, Pietro Elia
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Khan, N.
    COMSATS University Islamabad, Islamabad, Pakistan.
    Dynamic simulation of solar water heating system using supercritical CO2 as mediating fluid under sub-zero temperature conditions2019Inngår i: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 161, artikkel-id 114152Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    CO2 is becoming increasingly important as a mediating fluid, and simulation studies are indispensable for corresponding developments. In this study, a simulation-based performance investigation of a solar water heating system using CO2 as a mediating fluid under sub-zero temperature condition is performed using the TRNSYS® software. The maximum performance is achieved at a solar savings fraction of 0.83 during July. The as lowest solar savingss fraction of 0.41 is obtained during December. The annual heat production of the proposed system under Fargo climate is estimated to be about 2545 kWh. An evacuated glass tube solar collector is designed, fabricated and tested for various climate conditions. Moreover, a detailed comparison of the system's performance at sub/supercritical and supercritical pressures shows that the annual heat transfer efficiency of the modeled system is 10% higher at supercritical pressure than at sub/supercritical pressures. This result can be attributd to the strong convection flow of CO2 caused by density inhomogeneities, especially in the near critical region. This condition resuls in high heat transfer rates.

  • 6.
    Abbas, M.
    et al.
    University Pretoria, South Africa.
    De La Sen, M.
    University of the Basque Country, Spain.
    Nazir, Talat
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, Utbildningsvetenskap och Matematik.
    Common Fixed Points of Generalized Rational Type Cocyclic Mappings in Multiplicative Metric Spaces2015Inngår i: Discrete dynamics in nature and society, ISSN 1026-0226, E-ISSN 1607-887X, Vol. 2015, artikkel-id 532725Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of this paper is to present fixed point result of mappings satisfying a generalized rational contractive condition in the setup of multiplicative metric spaces. As an application, we obtain a common fixed point of a pair of weakly compatible mappings. Some common fixed point results of pair of rational contractive types mappings involved in cocyclic representation of a nonempty subset of a multiplicative metric space are also obtained. Some examples are presented to support the results proved herein. Our results generalize and extend various results in the existing literature.

  • 7.
    Abbas, M.
    et al.
    Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
    Nazir, Talat
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, Utbildningsvetenskap och Matematik.
    Popović, B.
    University of Kragujevac, Serbia.
    Radenović, S.
    University of Belgrade, Belgrade.
    On Weakly Commuting Set-Valued Mappings on a Domain of Sets Endowed with Directed Graph2017Inngår i: Results in Mathematics, ISSN 1422-6383, Vol. 71, nr 3-4, s. 1277-1295Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of this paper is to present coincidence and common fixed point results of set-valued mappings satisfying certain generalized graphic F-contractive conditions on a family of sets endowed with a graph. It is worth mentioning that these results are obtained without appealing to any form of continuity of mappings involved herein. Some examples are presented to support the results proved in this paper. Our results unify, generalize and extend various comparable results in the existing literature. © 2016, Springer International Publishing.

  • 8.
    Abbas, Muhammad
    et al.
    Research Institutes of Sweden Västerås, Sweden.
    Inayat, Irum
    National University of Computer & Emerging Sciences Islamabad, Pakistan.
    Jan, Naila
    National University of Computer & Emerging Sciences Islamabad, Pakistan.
    Saadatmand, Mehrdad
    Research Institutes of Sweden Västerås, Sweden.
    Enoiu, Eduard Paul
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Daniel, Sundmark
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    MBRP: Model-based Requirements Prioritization Using PageRank Algorithm2019Inngår i: Asia-Pacific Software Engineering Conference APSEC 2019, Putrajaya, Malaysia, 2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Requirements prioritization plays an important role in driving project success during software development. Literature reveals that existing requirements prioritization approaches ignore vital factors such as interdependency between requirements. Existing requirements prioritization approaches are also generally time-consuming and involve substantial manual effort. Besides, these approaches show substantial limitations in terms of the number of requirements under consideration. There is some evidence suggesting that models could have a useful role in the analysis of requirements interdependency and their visualization, contributing towards the improvement of the overall requirements prioritization process. However, to date, just a handful of studies are focused on model-based strategies for requirements prioritization, considering only conflict-free functional requirements. This paper uses a meta-model-based approach to help the requirements analyst to model the requirements, stakeholders, and inter-dependencies between requirements. The model instance is then processed by our modified PageRank algorithm to prioritize the given requirements. An experiment was conducted, comparing our modified PageRank algorithm’s efficiency and accuracy with five existing requirements prioritization methods. Besides, we also compared our results with a baseline prioritized list of 104 requirements prepared by 28 graduate students. Our results show that our modified PageRank algorithm was able to prioritize the requirements more effectively and efficiently than the other prioritization methods.

  • 9.
    Abbas, Mujahid
    et al.
    Ton Duc Thang Univ, Ho Chi Minh City, Vietnam..
    Nazir, Talat
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, Utbildningsvetenskap och Matematik.
    Lampert, Tatjana Aleksic
    Fac Sci, Dept Math, Radoja Domanovica 12, Kragujevac 34000, Serbia.
    Radenovic, Stojan
    State Univ Novi Pazar, Serbia..
    Common fixed points of set-valued F-contraction mappings on domain of sets endowed with directed graph2017Inngår i: Computational and Applied Mathemathics, ISSN 0101-8205, Vol. 36, nr 4, s. 1607-1622Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of this paper is to present common fixed point results of set-valued graphic F-contraction mappings on a family of sets endowed with a graph. Some examples are presented to support the results proved herein. Our results unify, generalize and extend various results in the existing literature.

  • 10.
    Abbas, Nermin
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Jansson, Emelie
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Mir Haghi Nejad, Masoumeh
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Kreditbedömning gentemot småföretag:  hur hanterar två lokala banker sin kreditgivning?2011Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    This essay aims to analyze based on the theory SEB and Nordea´s credit assessment process against small enterprises.

  • 11.
    Abbas, Rami
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Issa, Simon
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Landenberg, Kevin
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Utdelning i fåmansbolag: Reformers påverkan på beteende och agerande2018Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Datum:                    2018-01-15

    Nivå:                        Kandidatuppsats Företagsekonomi, 15 hp

    Akademi:                Akademin för Ekonomi, Samhälle och Teknik, Mälardalens Högskola

    Författare:              Rami Abbas             Simon Issa                          Kevin Landenberg              92/03/26                                 92/02/02                                       94/08/11       

    Titel:                        Utdelning i fåmansbolag

    Nyckelord:                         Utdelning, kvalificerade aktier, slopade förslaget 2017, skattebeteende

    Forskningsfrågor: Vilka eventuella förändringar i beteenden har det slopade förslaget             genererat vid beslutfattande hos fåmansbolag?

     Vilken påverkan har skattereformer på skattebeteende?

    Syfte:                       Syftet med undersökningen är att skapa förståelse över om, hur och varför fåmansbolagen har agerat utefter det slopade förslaget för förändringen på 3:12- reglerna. Utöver detta är syftet också att skapa en förståelse för vilken påverkan skattereformer har på skattebeteende.

    Metod:                     Regleringar kring fåmansbolagsutdelningsmöjligheter har samlats in och analyserats. Teoretisk datainsamling om reformers påverkan på skattebeteende har insamlats. Utöver detta har det genomförts intervjuer med ägare för fåmansbolag samt auktoriserade revisorer.

    Slutsats:        Förslaget till förändringar som slopades sommaren 2017 hade ingen nämnvärd påverkan på majoriteten av delägarna i fåmansbolagen. Detta på grund av för komplicerade regleringar. I särskilda fall, när reformer är för komplicerade kräver det för berörda parter en inlärningstid för att ta in ny kunskap och därför inte har varken tid eller kunskap att agera efter reformens krav.

  • 12.
    Abbasi, Mohsin Manshad
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Identification of both Similar and Diverse Rare Cases in Post-Operative Pain Management2011Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This thesis is about identification of rare and similar cases in post operative pain. This thesis works with real data consisting of about 3793 cases collected from various hospitals all around the World. It also implements four clustering techniques to study their results and choose the best one among them for the identification of rare cases

  • 13.
    Abbasi, Rezgar
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Grupparbetens pedagogiska och socialpedagogiska betydelse: En kvalitativ studie om socionomstudenters erfarenheter och upplevelser av grupparbete.2019Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this study is to investigate group-oriented pedagogy and its effects, based on the subjective experiences of social students, i.e. to study the pedagogical and special educational significance of the group work. This has been done through a qualitative approach where the selection was turned towards a targeted group, and then semi-structured interviews were conducted. The result shows that group-oriented pedagogy was perceived positively, instructively and educating in large part among the respondents despite some conflicts and different views. Furthermore, characteristics such as acceptance, responsiveness, adaptation and openness are highlighted and emphasized as something that is bred or refined by working in groups. Other aspects that emerged from the results were prerequisites for a functional group work, where the respondents listed some criteria such as willingness to cooperate, group size and constellation as important conditions for a well- functioning group work. In summary, the study's content highlights that there are great opportunities for development within group work, but that it is also important to continuously develop and keep an eye on the group processes.

  • 14.
    Abbaspour Asadollah, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Bugs and Debugging of Concurrent and Multicore Software2016Licentiatavhandling, med artikler (Annet vitenskapelig)
  • 15.
    Abbaspour Asadollah, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Concurrency Bugs: Characterization, Debugging and Runtime Verification2018Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Concurrent software has been increasingly adopted in recent years, mainly due to the introduction of multicore platforms. However, concurrency bugs are still difficult to test and debug due to their complex interactions involving multiple threads (or tasks). Typically, real world concurrent software has huge state spaces. Thus, testing techniques and handling of concurrency bugs need to focus on exposing the bugs in this large space. However, existing solutions typically do not provide debugging information to developers (and testers) for understanding the bugs.

    Our work focuses on improving concurrent software reliability via three contributions: 1) An investigation of concurrent software challenges with the aim to help developers (and testers) to better understand concurrency bugs. We propose a classification of concurrency bugs and discuss observable properties of each type of bug. In addition, we identify a number of gaps in the body of knowledge on concurrent software bugs and their debugging. 2) Exploring concurrency related bugs in real-world software with respect to the reproducibility of bugs, severity of their consequence and effort required to fix them. Our findings here is that concurrency bugs are different from other bugs in terms of their fixing time and severity, while they are similar in terms of reproducibility. 3) A model for monitoring concurrency bugs and the implementation and evaluation of a related runtime verification tool to detect the bugs. In general, runtime verification techniques are used to (a) dynamically verify that the observed behaviour matches specified properties and (b) explicitly recognize understandable behaviors in the considered software. Our implemented tool is used to detect concurrency bugs in embedded software and is in its current form tailored for the FreeRTOS operating system. It helps developers and testers to automatically identify concurrency bugs and subsequently helps to reduce their finding and fixing time.

  • 16.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Daniel, Sundmark
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Eldh, S.
    Ericsson AB, Kista, Sweden.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    A Runtime Verification Tool for Detecting Concurrency Bugs in FreeRTOS Embedded Software2018Inngår i: Proceedings - 17th International Symposium on Parallel and Distributed Computing, ISPDC 2018, Institute of Electrical and Electronics Engineers Inc. , 2018, s. 172-179, artikkel-id 8452035Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This article presents a runtime verification tool for embedded software executing under the open source real-time operating system FreeRTOS. The tool detects and diagnoses concurrency bugs such as deadlock, starvation, and suspension based-locking. The tool finds concurrency bugs at runtime without debugging and tracing the source code. The tool uses the Tracealyzer tool for logging relevant events. Analysing the logs, our tool can detect the concurrency bugs by applying algorithms for diagnosing each concurrency bug type individually. In this paper, we present the implementation of the tool, as well as its functional architecture, together with illustration of its use. The tool can be used during program testing to gain interesting information about embedded software executions. We present initial results of running the tool on some classical bug examples running on an AVR 32-bit board SAM4S. 

  • 17.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Daniel, Sundmark
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Eldh, S.
    Ericsson AB, Stockholm, Sweden.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Concurrency bugs in open source software: a case study2017Inngår i: Journal of Internet Services and Applications, ISSN 1867-4828, Vol. 8, nr 1, artikkel-id 4Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Concurrent programming puts demands on software debugging and testing, as concurrent software may exhibit problems not present in sequential software, e.g., deadlocks and race conditions. In aiming to increase efficiency and effectiveness of debugging and bug-fixing for concurrent software, a deep understanding of concurrency bugs, their frequency and fixing-times would be helpful. Similarly, to design effective tools and techniques for testing and debugging concurrent software, understanding the differences between non-concurrency and concurrency bugs in real-word software would be useful. This paper presents an empirical study focusing on understanding the differences and similarities between concurrency bugs and other bugs, as well as the differences among various concurrency bug types in terms of their severity and their fixing time, and reproducibility. Our basis is a comprehensive analysis of bug reports covering several generations of five open source software projects. The analysis involves a total of 11860 bug reports from the last decade, including 351 reports related to concurrency bugs. We found that concurrency bugs are different from other bugs in terms of their fixing time and severity while they are similar in terms of reproducibility. Our findings shed light on concurrency bugs and could thereby influence future design and development of concurrent software, their debugging and testing, as well as related tools.

  • 18.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Daniel, Sundmark
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Runtime Verification for Detecting Suspension Bugs in Multicore and Parallel Software2017Inngår i: Proceedings - 10th IEEE International Conference on Software Testing, Verification and Validation Workshops, ICSTW 2017, 2017, s. 77-80Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Multicore hardware development increases the popularity of parallel and multicore software, while testing and debugging the software become more difficult, frustrating and costly. Among all types of software bugs, concurrency bugs are both important and troublesome. This type of bugs is increasingly becoming an issue, particularly due to the growing prevalence of multicore hardware. Suspension-based-locking bug is one type of concurrency bugs. This position paper proposes a model based on runtime verification and reflection technique in the context of multicore and parallel software to monitor and detect suspension-based-locking bugs. The model is not only able to detect faults, but also diagnose and even repair them. The model is composed of four layers: Logging, Monitoring, Suspension Bug Diagnosis and Mitigation. The logging layer will observe the events and save them into a file system. The monitoring layer will detect the presents of bugs in the software. The suspension bug diagnosis will identify Suspension bugs by comparing the captured data with the suspension bug properties. Finally, the mitigation layer will reconfigure the software to mitigate the suspension bugs. A functional architecture of a runtime verification tool is also proposed in this paper. This architecture is based on the proposed model and is comprised of different modules. 

  • 19.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system. 7809198067.
    Enoiu, Eduard Paul
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Causevic, Adnan
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Daniel, Sundmark
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik.
    A Runtime Verification based Concurrency Bug Detector for FreeRTOS Embedded SoftwareInngår i: Artikkel i tidsskrift (Annet vitenskapelig)
  • 20.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Sundmark, Daniel
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Eldh, Sigrid
    Ericsson AB, Kista, Sweden.
    Towards Classification of Concurrency Bugs Based on Observable Properties2015Inngår i: Proceedings - 1st International Workshop on Complex Faults and Failures in Large Software Systems, COUFLESS 2015, 2015, s. 41-47Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In software engineering, classification is a way to find an organized structure of knowledge about objects. Classification serves to investigate the relationship between the items to be classified, and can be used to identify the current gaps in the field. In many cases users are able to order and relate objects by fitting them in a category. This paper presents initial work on a taxonomy for classification of errors (bugs) related to concurrent execution of application level software threads. By classifying concurrency bugs based on their corresponding observable properties, this research aims to examine and structure the state of the art in this field, as well as to provide practitioner support for testing and debugging of concurrent software. We also show how the proposed classification, and the different classes of bugs, relates to the state of the art in the field by providing a mapping of the classification to a number of recently published papers in the software engineering field.

  • 21.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Inam, Rafia
    Ericsson AB, Kista, Sweden.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    A Survey on Testing for Cyber Physical System2015Inngår i: Testing Software and Systems: 27th IFIP WG 6.1 International Conference, ICTSS 2015, Sharjah and Dubai, United Arab Emirates, November 23-25, 2015, Proceedings, 2015, s. 194-207Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Cyber Physical Systems (CPS) bridge the cyber-world of computing and communications with the physical world and require development of secure and reliable software. It asserts a big challenge not only on testing and verifying the correctness of all physical and cyber components of such big systems, but also on integration of these components. This paper develops a categorization of multiple levels of testing required to test CPS and makes a comparison of these levels with the levels of software testing based on the V-model. It presents a detailed state-of-the-art survey on the testing approaches performed on the CPS. Further, it provides challenges in CPS testing.

  • 22.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Saadatmand, Mehrdad
    SICS Swedish ICT, Västerås, Sweden.
    Eldh, Sigrid
    Ericsson AB, Kista, Sweden.
    Sundmark, Daniel
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    A Model for Systematic Monitoring and Debugging of Starvation Bugs in Multicore Software2016Inngår i: 2016 ASE Workshop on Specification, Comprehension, Testing and Debugging of Concurrent Programs SCTDCP2016, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    With the development of multicore hardware, concurrent, parallel and multicore software are becoming increasingly popular. Software companies are spending a huge amount of time and resources to nd and debug the bugs. Among all types of software bugs, concurrency bugs are also important and troublesome. This type of bugs is increasingly becoming an issue particularly due to the growing prevalence of multicore hardware. In this position paper, we propose a model for monitoring and debugging Starvation bugs as a type of concurrency bugs in multicore software. The model is composed into three phases: monitoring, detecting and debugging. The monitoring phase can support detecting phase by storing collected data from the system execution. The detecting phase can support debugging phase by comparing the stored data with starvation bug's properties, and the debugging phase can help in reproducing and removing the Starvation bug from multicore software. Our intention is that our model is the basis for developing tool(s) to enable solving Starvation bugs in software for multicore platforms.

  • 23.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Sundmark, Daniel
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Eldh, Sigrid
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system. Ericsson AB, Kista, Sweden .
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Afza, Wasif
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    10 Years of research on debugging concurrent and multicore software: a systematic mapping study2017Inngår i: Software quality journal, ISSN 0963-9314, E-ISSN 1573-1367, Vol. 25, nr 1, s. 49-82Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Debugging – the process of identifying, localizing and fixing bugs – is a key activity in software development. Due to issues such as non-determinism and difficulties of reproducing failures, debugging concurrent software is significantly more challenging than debugging sequential software. A number of methods, models and tools for debugging concurrent and multicore software have been proposed, but the body of work partially lacks a common terminology and a more recent view of the problems to solve. This suggests the need for a classification, and an up-to-date comprehensive overview of the area. 

    This paper presents the results of a systematic mapping study in the field of debugging of concurrent and multicore software in the last decade (2005– 2014). The study is guided by two objectives: (1) to summarize the recent publication trends and (2) to clarify current research gaps in the field.

    Through a multi-stage selection process, we identified 145 relevant papers. Based on these, we summarize the publication trend in the field by showing distribution of publications with respect to year , publication venues , representation of academia and industry , and active research institutes . We also identify research gaps in the field based on attributes such as types of concurrency bugs, types of debugging processes , types of research  and research contributions.

    The main observations from the study are that during the years 2005–2014: (1) there is no focal conference or venue to publish papers in this area, hence a large variety of conferences and journal venues (90) are used to publish relevant papers in this area; (2) in terms of publication contribution, academia was more active in this area than industry; (3) most publications in the field address the data race bug; (4) bug identification is the most common stage of debugging addressed by articles in the period; (5) there are six types of research approaches found, with solution proposals being the most common one; and (6) the published papers essentially focus on four different types of contributions, with ”methods” being the type most common one.

    We can further conclude that there is still quite a number of aspects that are not sufficiently covered in the field, most notably including (1) exploring correction  and fixing bugs  in terms of debugging process; (2) order violation, suspension  and starvation  in terms of concurrency bugs; (3) validation and evaluation research  in the matter of research type; (4) metric  in terms of research contribution. It is clear that the concurrent, parallel and multicore software community needs broader studies in debugging.This systematic mapping study can help direct such efforts.

  • 24.
    Abbaspour Asadollah, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Sundmark, Daniel
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Eldh, Sigrid
    Ericsson AB, Kista, Sweden.
    Hansson, Hans
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Paul Enoiu, Eduard
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    A Study on Concurrency Bugs in an Open Source Software2016Inngår i: IFIP Advances in Information and Communication Technology, vol. 472, 2016, Vol. 472, s. 16-31Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Concurrent programming puts demands on software debugging and testing, as concurrent software may exhibit problems not present in sequential software, e.g., deadlocks and race conditions. In aiming to increase efficiency and effectiveness of debugging and bug-fixing for concurrent software, a deep understanding of concurrency bugs, their frequency and fixingtimes would be helpful. Similarly, to design effective tools and techniques for testing and debugging concurrent software understanding the differences between non-concurrency and concurrency bugs in real-word software would be useful.

  • 25.
    Abbaspour, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Electromyogram Signal Enhancement and Upper-Limb Myoelectric Pattern Recognition2019Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Losing a limb causes difficulties in our daily life. To regain the ability to live an independent life, artificial limbs have been developed. Hand prostheses belong to a group of artificial limbs that can be controlled by the user through the activity of the remnant muscles above the amputation. Electromyogram (EMG) is one of the sources that can be used for control methods for hand prostheses. Surface EMGs are powerful, non-invasive tools that provide information about neuromuscular activity of the subjected muscle, which has been essential to its use as a source of control for prosthetic limbs. However, the complexity of this signal introduces a big challenge to its applications. EMG pattern recognition to decode different limb movements is an important advancement regarding the control of powered prostheses. It has the potential to enable the control of powered prostheses using the generated EMG by muscular contractions as an input. However, its use has yet to be transitioned into wide clinical use. Different algorithms have been developed in state of the art to decode different movements; however, the challenge still lies in different stages of a successful hand gesture recognition and improvements in these areas could potentially increase the functionality of powered prostheses. This thesis firstly focuses on improving the EMG signal’s quality by proposing novel and advanced filtering techniques. Four efficient approaches (adaptive neuro-fuzzy inference system-wavelet, artificial neural network-wavelet, adaptive subtraction and automated independent component analysis-wavelet) are proposed to improve the filtering process of surface EMG signals and effectively eliminate ECG interferences. Then, the offline performance of different EMG-based recognition algorithms for classifying different hand movements are evaluated with the aim of obtaining new myoelectric control configurations that improves the recognition stage. Afterwards, to gain proper insight on the implementation of myoelectric pattern recognition, a wide range of myoelectric pattern recognition algorithms are investigated in real time. The experimental result on 15 healthy volunteers suggests that linear discriminant analysis (LDA) and maximum likelihood estimation (MLE) outperform other classifiers. The real-time investigation illustrates that in addition to the LDA and MLE, multilayer perceptron also outperforms the other algorithms when compared using classification accuracy and completion rate.

  • 26.
    Abbaspour, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Evaluation of surface EMG-based recognition algorithms for decoding hand movementsManuskript (preprint) (Annet vitenskapelig)
  • 27.
    Abbaspour, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Proposing Combined Approaches to Remove ECG Artifacts from Surface EMG Signals2015Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Electromyography (EMG) is a tool routinely used for a variety of applications in a very large breadth of disciplines. However, this signal is inevitably contaminated by various artifacts originated from different sources. Electrical activity of heart muscles, electrocardiogram (ECG), is one of sources which affects the EMG signals due to the proximity of the collection sites to the heart and makes its analysis non-reliable. Different methods have been proposed to remove ECG artifacts from surface EMG signals; however, in spite of numerous attempts to eliminate or reduce this artifact, the problem of accurate and effective de-noising of EMG still remains a challenge. In this study common methods such as high pass filter (HPF), gating method, spike clipping, hybrid technique, template subtraction, independent component analysis (ICA), wavelet transform, wavelet-ICA, artificial neural network (ANN), and adaptive noise canceller (ANC) and adaptive neuro-fuzzy inference system (ANFIS) are used to remove ECG artifacts from surface EMG signals and their accuracy and effectiveness is investigated. HPF, gating method and spike clipping are fast; however they remove useful information from EMG signals. Hybrid technique and ANC are time consuming. Template subtraction requires predetermined QRS pattern. Using wavelet transform some artifacts remain in the original signal and part of the desired signal is removed. ICA requires multi-channel signals. Wavelet-ICA approach does not require multi-channel signals; however, it is user-dependent. ANN and ANFIS have good performance, but it is possible to improve their results by combining them with other techniques. For some applications of EMG signals such as rehabilitation, motion control and motion prediction, the quality of EMG signals is very important. Furthermore, the artifact removal methods need to be online and automatic. Hence, efficient methods such as ANN-wavelet, adaptive subtraction and automated wavelet-ICA are proposed to effectively eliminate ECG artifacts from surface EMG signals. To compare the results of the investigated methods and the proposed methods in this study, clean EMG signals from biceps and deltoid muscles and ECG artifacts from pectoralis major muscle are recorded from five healthy subjects to create 10 channels of contaminated EMG signals by adding the recorded ECG artifacts to the clean EMG signals. The artifact removal methods are also applied to the 10 channels of real contaminated EMG signals from pectoralis major muscle of the left side. Evaluation criteria such as signal to noise ratio, relative error, correlation coefficient, elapsed time and power spectrum density are used to evaluate the performance of the proposed methods. It is found that the performance of the proposed ANN-wavelet method is superior to the other methods with a signal to noise ratio, relative error and correlation coefficient of 15.53, 0.01 and 0.98 respectively.

  • 28.
    Abbaspour, Sara
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Surface EMG signal processing: Removing ECG interferences and classifying hand movements2017Inngår i: Medicinteknikdagarna 2017 MTD 2017, Västerås, Sweden, 2017Konferansepaper (Fagfellevurdert)
  • 29.
    Abbaspour, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Chiew, Thiam Kian
    University of Malaya, Kuala Lumpur, Malaysia .
    Web Service Response Time Monitoring: Architecture and Validation2011Inngår i: Communications in Computer and Information Science Volume 164 CCIS, 2011, 2011, s. 276-282Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Web services are used in many Web applications in order to save time and cost during software development process. To peruse Web service response time, a suitable tool is needed to automate the measurement of the response time. However, not many suitable tools are available for automatic measurement of response time. This research is carried out in the context of quality of Web services in order to measure and visualize Web service response time. The method proposed in this research for accomplishing this goal is based on creating a proxy for connecting to the required Web service, and then calculating the Web services response time via the proxy. A software tool is designed based on the proposed method in order to guide the implementation that is still in progress. The tool can be validated through empirical validation using three test cases for three different Web service access situations.

  • 30.
    Abbaspour, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Fallah, Ali
    Amirkabir University of Technology, Tehran, Iran.
    Lindén, Maria
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Gholamhosseini, Hamid
    Auckland University of Technology, Auckland, New Zealand.
    A Novel Approach for Removing ECG Interferences from Surface EMG signals Using a Combined ANFIS and Wavelet2016Inngår i: Journal of Electromyography & Kinesiology, ISSN 1050-6411, E-ISSN 1873-5711, Vol. 26, s. 52-59Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In recent years, the removal of electrocardiogram (ECG) interferences from electromyogram (EMG) signals has been given large consideration. Where the quality of EMG signal is of interest, it is important to remove ECG interferences from EMG signals. In this paper, an efficient method based on a combination of adaptive neuro-fuzzy inference system (ANFIS) and wavelet transform is proposed to effectively eliminate ECG interferences from surface EMG signals. The proposed approach is compared with other common methods such as high-pass filter, artificial neural network, adaptive noise canceller, wavelet transform, subtraction method and ANFIS. It is found that the performance of the proposed ANFIS-wavelet method is superior to the other methods with the signal to noise ratio and relative error of 14.97 dB and 0.02 respectively and a significantly higher correlation coefficient (p < 0.05).

  • 31.
    Abbaspour, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Gholamhosseini, H.
    School of Engineering, Auckland University of TechnologyAuckland, New Zealand .
    Lindén, Maria
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Evaluation of wavelet based methods in removing motion artifact from ECG signal2015Inngår i: IFMBE Proceedings, 2015, s. 1-4Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Accurate recording and precise analysis of the electrocardiogram (ECG) signals are crucial in the pathophysiological study and clinical treatment. These recordings are often corrupted by different artifacts. The aim of this study is to propose two different methods, wavelet transform based on nonlinear thresholding and a combination method using wavelet and independent component analysis (ICA), to remove motion artifact from ECG signals. To evaluate the performance of the proposed methods, the developed techniques are applied to the real and simulated ECG data. The results of this evaluation are presented using quantitative and qualitative criteria. The results show that the proposed methods are able to reduce motion artifacts in ECG signals. Signal to noise ratio (SNR) of the wavelet technique is equal to 13.85. The wavelet-ICA method performed better with SNR of 14.23.

  • 32.
    Abbaspour, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Lindén, Maria
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Electromyography signal analysis: Electrocardiogram artifact removal and classifying hand movements2018Inngår i: World Congress on Medical Physics and Biomedical Engineering IUPESM, 2018Konferansepaper (Fagfellevurdert)
  • 33.
    Abbaspour, Sara
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Lindén, Maria
    Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.
    Gholamhosseini, Hamid
    Auckland University of Technology, New Zealand.
    ECG Artifact Removal from Surface EMG Signal Using an Automated Method Based on Wavelet-ICA2015Inngår i: Studies in Health Technology and Informatics, Volume 211, 2015, s. 91-97Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This study aims at proposing an efficient method for automated electrocardiography (ECG) artifact removal from surface electromyography (EMG) signals recorded from upper trunk muscles. Wavelet transform is applied to the simulated data set of corrupted surface EMG signals to create multidimensional signal. Afterward, independent component analysis (ICA) is used to separate ECG artifact components from the original EMG signal. Components that correspond to the ECG artifact are then identified by an automated detection algorithm and are subsequently removed using a conventional high pass filter. Finally, the results of the proposed method are compared with wavelet transform, ICA, adaptive filter and empirical mode decomposition-ICA methods. The automated artifact removal method proposed in this study successfully removes the ECG artifacts from EMG signals with a signal to noise ratio value of 9.38 while keeping the distortion of original EMG to a minimum.

  • 34.
    Abd Elkhalek, Ahmed
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Critical Factors for Effective Information Systems Risks Management2011Independent thesis Advanced level (degree of Master (One Year)), 40 poäng / 60 hpOppgave
  • 35.
    Abdallah, Abdallah Said
    et al.
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Ikonomidis, Pavlos Vaso
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    ungdomar i socialt utsatta områden: En studie om hur ungdomar upplever deras bostadsområde och framtidsmöjligheter2017Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Syftet med denna studie var att undersöka hur ungdomar upplever att bo i ett socialt utsatt område, hur de uppfattar mediabilden samt vilka begränsningar och möjligheter som bostadsområdet innebär för deras framtid.

    För att få svar på våra frågeställningar har vi använt oss utav kvalitativa semistrukturerade intervjuer med sex ungdomar i den socialt utsatta Stockholmsförorten Tensta. Teorier som vi har använt oss utav i bearbetning av datainsamling är erkännandeteori samt av teorin om Stigma.

    Resultatet från intervjuerna visar att ungdomarna trivs bra i området trots den negativt uppfattade mediabilden om Tensta. Deras egna uppfattning av området skiljde sig från den uppfattade mediabilden. Samtidigt upplevde ungdomarna att deras egna framtidsmål inte begränsas av området man bor i, utan styrs av individers egna vilja att lyckas.

  • 36.
    Abdallah, Caroline
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Hur påverkar logistikplaneringen byggarbetsplatsen?: En enkätundersökning om logistikkostnader i produktion2013Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [en]

    Logistics planning for a construction site is usually limited by traffic flow to and from the workplace. The geographical location of the construction site is determined by roads around the workplace and opportunities for well-functioning logistics. Inventory of material is often impossible because of the frequently small workspaces. As a result, a concern relating material handling remains . Even before the establishment of a construction site, it is required in the construction industry to eliminate errors that might arise in the planning stage. The aim of this study was to contribute with better understanding of the relationship between well-planned logistics and reduced costs at the Swedish construction company Peab. To clarify this a survey was submitted at two construction sites and a sample of calculations were performed on reduced / additional costs at examples of "good" and "bad" planning of logistics, to show how to reduce costs.

    Higher requirements are placed on construction firms and demand such as shorter project times and lower costs and this is supposed to lead to a high profitability. To increase the profitability it is required that the construction industry is planning the amount of resources, manpower, material and time in the absolutely best way. Logistics is a part of the construction industry which may help reduce costs and provide greater profitability, if it is seen as a saving and not just a cost. There should, in other words, be a greater emphasis on planning of the logistics already at early stages of projects.

    There is a great amount of work on purchase of materials in the company Peab in the current situation, but if the company also put equal work on logistics, the planning could be optimized even before the project starts. Through good planning Peab will not only save on cost of purchase, but may also contribute to a better handling of material. Better handling of material also contributes to reduced costs for the project. Material is not only bound capital but can also disappear in waste, thievery or even destroyed. This is also appreciated by both professional workers and employees in the workplace. The opportunities for improvement and efficiency of logistics at Peab are great. By selecting a logistics manager at each construction project and also having a specialist in charge of the region that serves as support for the projects, Peab can save on logistics. The purpose of this report is to look at changing the view of logistics today on construction sites. The result of the calculation examples and survey shows where the largest cost items located in the various projects and how to achieve lower costs through better planning. This in turn helps the company increase profitability in the long term.

    Keyword: Logistic, Planning, Lean, Profability

  • 37.
    Abdallah, Mounawara
    et al.
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    Johansson, Sara
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    Att skapa goda relationer i förskolan: Förskolepersonalens syn på relationsskapande till barn i förskolan.2017Independent thesis Basic level (professional degree), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Goda relationer påverkar barns utveckling och lärande. Personalen i förskolan ska skapa relationer som är personliga till varje enskilt barn oavsett deras olika förutsättningar och behov så att de får möjlighet att utvecklas och lära sig. Studiens syfte är att medvetandegöra och öka kunskapen om vilka olika uppfattningar förskolepersonal har om relationsskapande till barnen i förskolan. I en kvalitativ studie med semistrukturerade intervjuer som har sin utgångspunkt i fallbeskrivningar har vi undersökt detta. Resultatet visar att förskolepersonal uttrycker att respekten för individen samt bekräftelsen av barnets känslor är en viktig del i det relationsfrämjande arbetet. Relationens kvalitet ses av de intervjuade förskollärarna och barnskötarna som ett resultat av positiva händelser som gynnar såväl barn som personal. Vår slutsats är att förskolepersonalens relationskompetens har betydelsen för hur relationen till det enskilda barnet blir.

  • 38.
    Abdalsalam Noman, Riam
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Alqaisy, Ahmad
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Design av hörnväggfixtur2017Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
  • 39.
    Abdelkarim, Sofia
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Hasan Hawre, Hazhwan
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Kartläggning av ergonomin i en produktionscell: Med utformningsförslag för en ergonomisk arbetsplats2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    ABSTRACT

    Purpose: The aim of the work is to map the ergonomics in a production cell and propose and compare the solutions to identified problems. In order to identify the problem and come up with some solutions, these questions have been answered.• What factors lead to operations that are harmful to the body?• How can a production cell be designed to be more ergonomic for employees?• What are the advantages / disadvantages of ergonomics in a production company?

     

    Method: To perform the study and achieve the purpose of the work, the authors used a case study company where observations were made in parallel with a literature review mainly on ergonomics variety of analysis and quality. The case study company has been used as the basis for the case study where ergonomics are mapped by means of observations, interviews and data that were analyzed by means of literature study done in parallel.

    Study results: The study resulted in a survey of ergonomics in a production cell at the case study company and 5 different suggestions for improvement. The production cell on the case study company is a red cell today, which means that the production cell is in a non-accepted position and in need for urgent changes in ergonomics. Factors leading to bad ergonomics and a non-accepted position as Volvo's requirements have been identified. Many heavy lifting and many torque is what has the highest negative impact on the working environment and ergonomics. Lack of adequate lifting tools have led to those not used in the production cell today. This leads to repetitive work and encumbrance at the case study company. Further, also the working height of the paths contributed to an increased workload as operators are in an unnatural posture. All of these factors are the basis of the 5 suggestions for improvement as the study also resulted in. New custom lifting tools, job rotation, reverse the order of the court, new packaging and pallet to the gears and the robot turn. All these proposed solutions lead to reduced stress and improved ergonomics in the production cell as manual lifting and twists are reduced. The solutions also leads to the production cell shifting from a non-accepted position with demands of urgent change to a yellow production cell that requires an action plan for the future.

     

    Implications: The aim of this study was to map the ergonomics in a production cell. With the study in hand, a conclusion is drawn that the aim has been achieved when all three of the questions have been addressed. Factors leading to poor ergonomics are identified. As well the advantages and disadvantages of investing in ergonomics identified and how production cells should be formed. With this information in mind, a number of proposed solutions have been developed.

     

    Recommendations: Further studies on the subject are recommended to increase knowledge and interest. It may be appropriate to carry out more case studies at more industries to strengthen the study’s results and generalizability. Furthermore, studies are recommended where the entire work environment is studied and not only physical ergonomics. By studying the whole working environment and the many factors that interact it can lead to a greater force being created for higher efficiency and quality in production.

     

    Keywords: Ergonomics, Ergonomics, Work, Volvo CE, Load, Lifting Tools, Body Injury, Advantages, Improvements, Quality

  • 40.
    Abdi, Abdollah
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Invandring och integration i det svenska samhället: En studie av flyktingars upplevelse av integration i Sverige2011Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Uppsatsen avhandlar begreppet integration utifrån flyktingars uppfattning, samtidigt lyfter jag fram deras upplevelse av integration i Sverige. Forskningen visar att utlänningar i Sverige har sämre levnadsvillkor jämfört med svenskar, blir diskriminerade och utsorterade på arbetsmarknaden på grund av sin etniska bakgrund. Jag har intervjuat fem flyktingar från två olika länder i Mellanöstern i mellersta Sverige för att skapa förståelse för problemområdet.

     Jag har valt att använda olika vetenskapliga synpunkter kring begreppen integration, segregation och diskriminering som utgångspunkt för nämnda problemområde. Eftersom Syftet med min forskning är att få en djupare förståelse av respondenternas förståelse och upplevelse av integration i det svenska samhället, har jag använt mig av en kvalitativ metod med ett hermeneutiskt angreppssätt. Det innebär att deltagarnas ord och berättelser spelar den största roll i uppsatsens tolkningar.  I resultatet framkommer att integration handlar om lika rättigheter och möjligheter, jämlikhet, respekt samt acceptans bland olika sociala grupper i samhället. Samtidigt har jag kommit fram till att flyktingar upplever diskriminering, utanförskap samt känner att de befinner sig i en process av ovilliganpassning i samhället.

  • 41.
    Abdi, Akam
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Chen, Wei
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Intern kontroll: Används visselblåsning som mekanism i den interna kontrollenmot oegentligheter av ekonomisk brottslighet inom kreditinstituten?2015Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Syftet med denna studie är att undersöka bankernas syn på internkontroll och vidare undersöka vilka mekanismer som används föratt effektivisera den interna kontrollen. Studien riktar sig på attundersöka huruvida visselblåsning används som en av demmekanismerna för att stärka förmågan med att upptäcka ochförhindra oegentligheter av ekonomisk art.

    Studien använder en induktiv metod för att leda insamlingen avdatamaterial. Vidare använder studien en kvalitativ metod baseradpå intervjuer med fyra olika banker där datamaterialet analyserasmed datamaterialet i kapitel två.

    Studien visar att det finns en positiv syn på den interna kontrollenoch visselblåsning som mekanism för att skapa en framgångsrikverksamhet. Fastän visselblåsning anses ha en kompliceradfunktion, används den fortfarande för att upptäcka och förhindraoegentligheter, såsom ekonomiska brott. Förutom visselblåsning,använder bankerna mer mekanismer för att stärka och effektiviseraden interna kontrollen. Att uppmana medarbetarna att följa lagaroch principer, utbilda medarbetarna inom olika områden samt attskapa olika arbetarsätt inom verksamheten, att genomföra interntillsyn och ständiga granskningar är en del av de mekanismer somanvänds.

  • 42.
    Abdi, Akam
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Chen, Wei
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Tystnads- och anmälningsplikten: Revisorns hantering av konflikter för ett oberoende ställning och vid misstanke om brott2014Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this thesis is to create a deeper and also a better understanding about how each of the professional secrecy and obligation to report are perceived from auditors and further investigate how the potential conflicts based on independence and “can be suspect” are handled by the auditors. The purpose has been achieved through interviews with four different accounting firms.

    The interviews were conducted with Grant Thornton, BDO Mälardalen AB, PwC and KPMG to answer the research questions. Subsequently, a hermeneutic approach was used to since the interpretation of the interviews was considered as important to obtain knowledge of the respondent’s perception about the topic. In the analyze chapter have dataset from the reference framework and empirical part been used to implement the analyze of the thesis.

    The study shows that the professional secrecy is important for creating a good relationship with clients and is not considered as a rule that create conflicts for auditors. The obligation to report, however, is creating conflicts because of the lack of knowledge in assessment of economic crimes. The auditors therefore decide to investigate a situation that “can be suspect” beyond what is intended. To not become dependent on the clients, there are rules and profession practices that are used and also examples like not having friends or family members as clients.

  • 43.
    Abdi, Akam
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Chen, Wei
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Tystnads- och anmälningsplikten: Revisorns hantering av konflikter för ett oberoende ställning och vid misstanke om brott2014Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this thesis is to create a deeper and also a better understanding about how each of the professional secrecy and obligation to report are perceived from auditors and further investigate how the potential conflicts based on independence and “can be suspect” are handled by the auditors. The purpose has been achieved through interviews with four different accounting firms.

    The interviews were conducted with Grant Thornton, BDO Mälardalen AB, PwC and KPMG to answer the research questions. Subsequently, a hermeneutic approach was used to since the interpretation of the interviews was considered as important to obtain knowledge of the respondent’s perception about the topic. In the analyze chapter have dataset from the reference framework and empirical part been used to implement the analyze of the thesis.

    The study shows that the professional secrecy is important for creating a good relationship with clients and is not considered as a rule that create conflicts for auditors. The obligation to report, however, is creating conflicts because of the lack of knowledge in assessment of economic crimes. The auditors therefore decide to investigate a situation that “can be suspect” beyond what is intended. To not become dependent on the clients, there are rules and profession practices that are used and also examples like not having friends or family members as clients.

  • 44.
    Abdi, Aram
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Förekomsten av socialt stöd och sociala relationer i arbetslivet: En kvalitativ studie om betydelsen av socialt stöd och social relation mellan chefer och anställda2018Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this study was to examine the social relationship and social support at the daily work. Furthermore, this study aimed to create an understanding of the importance of social relations and support between employees and supervisors within an organization. For this purpose, 10 interviews were conducted with employees and supervisors from one municipality and two authorities.

    The study showed that strong working relationship and social support within a workplace and between supervisors and employees can create the prerequisite for a higher efficiency and better health among employees. Furthermore, the study showed that a good relationship and support between supervisors and employees can increase the motivation and feeling of a strong entity among employees. The result of the study also indicated the importance of a strong structure build buy a good dialogue and support between supervisors and employees within an organization.

  • 45.
    Abdi, Diana
    Mälardalens högskola, Akademin för hälsa, vård och välfärd.
    Kvinnors upplevelser av att leva med urininkontinens: En litteraturstudie2019Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Background: Urinary incontinence can affect all people and is described as a difficulty in controlling the urine, which in turn can lead to involuntary urinary leakage. There are several reasons behind urinary incontinence, for instance due to weakness in the connective tissue and muscles of the pelvic floor. Women who suffer from urinary incontinence have thought of it as normal and temporary, although it is a permanent condition. Urinary leakage can also give the feeling of discomfort, which may evolve into anxiety and distress about how to handle the leakage. The fear of getting urine leakage publicly can also lead to social isolation. Aim: The aim is to investigate women's experiences of living with urinary incontinence. Method: A qualitative literature study of eleven scientific articles was conducted. Result: The analysis is presented with three themes; Emotional imbalance, Powerlessness and Attitude, as well as six additional subthemes; Feelings of shame, Feelings of fear, A lost bodily control, Limitations in everyday life, Feelings of taboo and Accepting existence.

    The main conclusion: Urinary incontinence is a taboo coated subject and may be due to several reasons, including that women feel embarrassed to speak about it publicly, which in turn may mean a lack of awareness within the health care but also among the affected women. Furthermore, when women sought treatment and found different strategies to reduce leakage, the symptoms decreased.

  • 46.
    Abdi, Sade
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Rathmaya, Noureddine
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Managing employees and promoting internal communication during change: A case study of change management at MTR Tunnelbanan AB2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
  • 47.
    Abdisalam Ahmed, Hinda
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Teimouri, Meriem
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Svensk invandrar- och integrationspolitik och dess förändring: Fallet Vallby i Västerås2015Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
  • 48.
    Abdlwafa, Lezan
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Balci, Anita
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Safari, Awat
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Bokföringsbrott: Ett resultat av oaktsamhet i bokföring?2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Datum: 29 maj, 2013

    Nivå: Kandidatuppsats i företagsekonomi, 15 hp

    Institution: Akademin för ekonomi, samhälle och teknik, ESTMälardalens Högskola

    Författare: Lezan Abdlwafa, Anita Balci & Awat Safari

    Titel: Bokföringsbrott – Ett resultat av oaktsamhet i bokföring?

    Handledare: Ulla Pettersson

    Nyckelord: Bokföringsbrott, oaktsamhet, bokföringsskyldighet, god redovisningssed, Ekobrottsmyndigheten, Skatteverket, konkursförvaltare

    Frågeställning: På vilket sätt leder näringsidkarens oaktsamhet i bokföring till bokföringsbrott? Vilka faktorer bidrar till detta?

    Syfte: Att undersöka hur näringsidkarens oaktsamhet i bokföringen kan vara en av orsakerna till bokföringsbrott.

    Metod: För att uppnå syftet så använde vi oss av en kvalitativ metod för att få en djupare förståelse av ämnet. Vi inhämtade vårt material till referensramen från litteratur samt lagar såsom bokföringslagen, årsredovisningslagen och brottsbalken. Material till empirin var hämtad från tre intervjuer med personer som besitter relevant kunskap, en skattebrottsutredare, en konkursförvaltare och en åklagare.

    Slutsats: Det vi har kommit fram till i vår uppsats är att oaktsamhet i bokföring är en orsak till bokföringsbrott, främst i mindre företag som inte har resurser till att upprätta bokföring på ett sätt som ger en rättvisande bild av företagets ekonomiska ställning.

  • 49.
    Abdu, Hayat
    et al.
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    Lindqvist, Martina
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    ”Fröken! kan du hjälpa mig att ta ner den där leksaken?”: Förskolepersonals beskrivning på om de utformar förskolans inomhusmiljö samt barns materialtillgång utifrån barns förutsättningar och behov2018Independent thesis Basic level (professional degree), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Förskolans verksamhet är barns arena där alla barn har rätt att på ett jämlikt sätt främjas i deras utveckling och lärande. Studiens syfte är att undersöka om och hur förskolepersonal utformar förskolans inomhusmiljö samt barns materialtillgång utifrån alla barns förutsättningar och behov. Studien är baserad på en kvantitativ enkätundersökning med kvalitativa inslag som riktar sig till förskolepersonal, där vi utgått från 40 respondenters svar. I relation till det sociokulturella perspektivet har resultatet analyserats utifrån förskolepersonals perspektiv. I resultatet framgick det att miljön är betydande för barns utveckling och lärande samt att jämlikhet i relation till förskolans inomhusmiljö och materialtillgång är en komplex fråga. Slutsatsen är att om förskolepersonal ska kunna utforma inomhusmiljön samt barns materialtillgång utifrån alla barns förutsättningar och behov behöver de finna metoder och strategier som passar den aktuella barngruppen.

  • 50.
    Abdul Hakim, Abdul Ali
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Energieffektivisering av ett flerbostadshus från miljonprogrammet: En fallstudie av Kungsfågelgatan 12 i Västerås2010Independent thesis Advanced level (degree of Master (One Year)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Examensarbetet behandlar energieffektiviseringsåtgärder för ett flerbostadshus byggt under

    miljonprogrammet. Miljonprogrammet innebar kortfattat att man inom tioårsperioden 1965 till

    1975 byggde ca en miljon nya bostäder i Sverige. Anledningen till detta var dels bostadsbristen

    och dels låg standard på de befintliga bostäderna.

    Flerbostadshus från just miljonprogrammet valdes i detta examensarbete eftersom det är idag ett

    mycket aktuellt ämne med tanke på att dessa hus är allmän kända för hög energiförbrukning.

    Studier visar att möjligheten för energibesparing är stor inom bostadssektorn, detta gäller i hög

    grad för hus från miljonprogrammet.

    Miljonprogramshusen har nu stått i 35-45 år, och 40 år var deras uppskattade livstid då de

    byggdes. Dessa hus står nu därför inför omfattande renoveringar och det är därför viktig att göra

    rätt energibesparande åtgärder i samband med dessa renoveringar.

    Uppgiften till detta examensarbete blev i första hand att ta fram byggnadens energitekniska

    status idag och att sedan komma med några praktiska och tillämpbara förslag på åtgärder för

    minskad energianvändning.

    Energieffektiviseringsåtgärder som undersöktes var inre och yttre tilläggsisolering med 100 mm

    isolering, fönsterbyte, fönsterrenovering, tätning runt fönster och dörrar, inglasning av balkonger

    och värmeåtervinning med frånluftsvärmepump.

    Den relativa luftfuktigheten och temperaturen i väggkonstruktionen beräknades för den

    befintliga väggen samt med inre och yttre tilläggsisolering. Resultatet av fuktberäkningen visade

    tydligt att den yttre tilläggsisoleringen på både väggkonstruktioner – lättbetong och

    sandwichelement – är det bästa alternativen ur fuktsynpunkten.

    Alla undersökta energieffektiviseringsåtgärder tillsammans visade sig enligt beräkningarna

    minska byggnadens energianvändning från ca 167 kWh/m

    2 och år i dagläget till ca 90 kWh/m2

    och år efter att åtgärderna utförs. Detta avser energianvändning med definitionen i Boverkets

    Byggregler, alltså all köpt energi exklusive hushållsel.

    Slutsatsen efter beräkningarna visar att installering av frånluftsvärmepump är den bästa och

    effektivaste åtgärden för att spara energi. Med de här antagandena som gjorts så kommer 64500

    kWh/ år fjärrvärme att ersättas av 43000 kWh ”gratisvärme” och 21500 kWh el.

    Beräkningar visar att en yttre tilläggisolering samt fönsterbyte är näst mest effektivaste

    energibesparingsåtgärden. Det visade sig att yttre tilläggsisolering även är den säkraste åtgärden

    ur fuktsynpunkt.

    Tätning runt fönster och dörrar samt inglasning balkonger hade hjälpt något men inte i samma

    utsträckning som de övriga åtgärderna. Inglasning av balkonger är en dyr åtgärd och ger endast

    en mindre energibesparing.

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