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  • Jansson, Daniel
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Blomstrand, Rasmus
    Mälardalen University, School of Innovation, Design and Engineering.
    REAL-TIME PREDICTION OF SHIMS DIMENSIONS IN POWER TRANSFER UNITS USING MACHINE LEARNING2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • Lilit, Vahanyan
    Mälardalen University, School of Health, Care and Social Welfare.
    Studenters upplevelse av stress: En intervjustudie2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Den tillgängliga forskningen visar att förekomsten av stress och stressrelaterad ohälsa ökar bland högskolestudenter och påverkar deras studieprestation negativt. Syftet med denna studie var att öka förståelse för studierelaterad stress genom att lyssna på och analysera studenters subjektiva upplevelser och tankar kring studierelaterad stress samt hur de beskriver att de påverkas av och hanterar denna stress. En kvalitativ forskningsmetod valdes i form av semistrukturerad intervju för att besvara frågeställningar. Åtta studenters intervjuer transkriberades och analyserades därefter med tematisk analys.  Resultaten visade på att stress både kunde ses som positiv och negativ. Studenterna beskrev både fysiska, sociala och emotionella konsekvenser. Studien visade på att studenterna hade ett ansvar för att hantera sin stress och möjligheter att förhålla sig och utveckla sin studieteknik men att de också uttryckte en önskan om stöd från högskola. Studien hoppas väcka större intresse för ämnet och utvecklandet av möjligheter för studenter att kunna reducera stress.

  • Stenebrant, Alexander
    et al.
    Mälardalen University, School of Business, Society and Engineering, Industrial Economics and Organisation.
    Al-Mosawi, Nor
    Mälardalen University, School of Business, Society and Engineering, Industrial Economics and Organisation.
    OPTIMIZATION OF NOZZLE SETTINGS FOR A FIGHTER AIRCRAFT2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Most fighters use the convergent-divergent nozzle configuration to accelerate into the supersonic realm. This nozzle configuration greatly increases the thrust potential of the aircraft compared to the simpler convergent nozzle. The nozzle design is not only crucial for thrust, but also for the drag since the afterbody drag can be as high as 15% of the total. Engine manufacturers optimize the engine and the nozzle configurations for the uninstalled conditions, but these may not be optimal when the engine is installed in the aircraft. The purpose of this study is to develop a methodology to optimize axisymmetric nozzle settings in order to maximize the net thrust. This was accomplished by combining both simulations of thrust and drag. The thrust model was created in an engine performance tool, called EVA, with the installed engine performance of a low bypass turbofan jet engine at maximum afterburner power setting. The drag model was created with CFD, where the mesh was built in ICEM Mesh and the simulations were run with the CFD solver M-Edge. Five Mach numbers in the range from 0.6 to 1.6 were simulated at an altitude of 12 km. The results showed that the afterbody drag generally decreased when increasing jet pressure ratio at both subsonic and supersonic velocities. At subsonic conditions, increasing nozzle area ratio for underexpanded nozzles would decrease the drag. Increasing nozzle area ratio for fully expanded or overexpanded nozzles would instead increase the drag to an intermediate point from where it would decrease. At supersonic condition, increasing nozzle area ratio would generally cause reduction in drag for all cases. The optimization showed that a net thrust increase of 0.02% to 0.09% could be gained for subsonic conditions while the supersonic optimization had negligible gain in thrust.

  • Lidar, Karl
    Mälardalen University, School of Innovation, Design and Engineering.
    Improving antibiotics handling through the use of lean methods2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    With the use methods originating from lean philosophy, the thesis focuses on improving health care in the specific process of mixing antibiotics. Value stream maps will be used for describing the current state of mixing antibiotics at an infection department. When viewing mixing processes from a lean perspective, all processes did not give value for the customer, in this case the patient. Through the use of different lean methods, improvements on the current state has been made. These improvements will establish the future state, a description of improved processes. 

    Conclusions drawn is that the problem can be divided into two categories, flow of information and movements. A machine were designed as a solution to the problems found in the current state. Both the flow of information and movements can then to some extent be automated, creating more value for the patient. 

  • Pathi, Sai Krishna
    et al.
    Örebro University, Sweden.
    Kristoffersson, Annica
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Kiselev, Andrey
    Örebro University, Sweden.
    Loutfi, Amy
    Örebro University, Sweden.
    F-Formations for Social Interaction in Simulation Using Virtual Agents and Mobile Robotic Telepresence Systems2019In: Multimodal Technologies and Interaction, ISSN 2414-4088, Vol. 3, no 4, article id 69Article in journal (Refereed)
    Abstract [en]

    F-formations are a set of possible patterns in which groups of people tend to spatially organize themselves while engaging in social interactions. In this paper, we study the behavior of teleoperators of mobile robotic telepresence systems to determine whether they adhere to spatial formations when navigating to groups. This work uses a simulated environment in which teleoperators are requested to navigate to different groups of virtual agents. The simulated environment represents a conference lobby scenario where multiple groups of Virtual Agents with varying group sizes are placed in different spatial formations. The task requires teleoperators to navigate a robot to join each group using an egocentric-perspective camera. In a second phase, teleoperators are allowed to evaluate their own performance by reviewing how they navigated the robot from an exocentric perspective. The two important outcomes from this study are, firstly, teleoperators inherently respect F-formations even when operating a mobile robotic telepresence system. Secondly, teleoperators prefer additional support in order to correctly navigate the robot into a preferred position that adheres to F-formations.

  • Rasoal, Dara
    Mälardalen University, School of Health, Care and Social Welfare, Health and Welfare.
    Concept Clarification of Moral Case Deliberation2018In: Open Journal of Nursing, ISSN 2162-5336, E-ISSN 2162-5344, Vol. 8, p. 390-403Article in journal (Refereed)
    Abstract [en]

    Background: Health care professionals have encountered ethically difficult situations for decades in their clinical practice. Various clinical ethics support has been established in order to deal with these issues. Moral case deliberation is a new developed approach that deliberates over ethically difficult cases in clinical practice. However, there is lack of knowledge that describes the characteristics of the moral case deliberation and how this differs to related clinical ethics support where a concept analysis may clarify the differences. Aim: To analyse the concept of moral case deliberation and related concepts. Methods: Integrative literature review. Rodger’s evolutionary view of concept analysis has been used for clarification of the concept. Using specific keywords in the databases, searching for peer-reviewed academic paper published in English between 1995-2017 in the CINAHL, MEDLINE, Psych Info, Academic Search Elite and AMED. Results: Moral case deliberation (MCD) was defined as an approach with four specific characteristics: 1) Perspective sharing via dialogue, 2) training moral awareness, 3) moral emotional deliberation, and 4) moral support and joint learning. The presence of a facilitator who is trained in a specific method for the MCD reflection seemed to be important when stimulating the discussion from a patient perspective. Conclusions: Clarify the concept of moral case deliberation can be useful for healthcare professionals when choosing a facilitate-base reflection. Through a mutual dialogue and perspective sharing can MCD train staff members in moral awareness, create a space for emotions to be expressed and finally work as an platform for joint learning.

  • Juura, Jonaz
    Mälardalen University, School of Business, Society and Engineering.
    Analys av antagnings- och genomströmningsmått för utbild­ningsprogram: Förslag till och exempel på tillämpning av en registerbaserad uppföljningsmetod2019Report (Other academic)
    Abstract [sv]

    Utifrån krav på breddad rekrytering av studenter till utbildningar vid landets lärosäten kan goda skäl finnas att följa upp genomströmningen inom olika ut­bild­­nings­program. Därtill har fakultetsnämnden vid Mälardalens högskola beslutat om en modell för upp­följning av lärosätets utbildningar utifrån den kvali­tets­policy som tidigare har fastställts. I denna policy betonas att det sys­te­matiska kvalitets­arbetet ska årligen genom­föras nära verksamheten samt ska utgå från det dagliga kvalitets­arbetet som bedrivs vid hög­skolan. Modellen för hur uppföljningen ska genomföras beskrivs i sju punkter, varav den fjärde punkten avser analyser av utbild­ningsprogram. Föreliggande studie kan ses som ett komplement till denna punkt, då studien berör vissa moment som ingår i pro­gramanalysen: söktryck samt genom­strömning och prestationsgrad.

    Till skillnad från den årliga analysen enligt ovan nämnda modell har denna studie en mätperiod som sträcker sig över flera års studentkohorter, för att där­igenom illustrera och analysera utvecklingen över tid. För detta har ingen före­slagen arbetsmodell funnits till hands, varför syftet för studien har varit att både utveckla ett utkast till metod för registerbaserad uppföljning av olika utbild­ningsprogram samt att med den föreslagna metoden genomföra en uppföljning av ett utvalt utbildnings­program inom Akademin för samhälle, ekonomi och teknik – Högskoleingenjörsprogrammet i byggnadsteknik om 180 hp. Rap­porten redo­gör således både för en utförd uppföljning av nämnda utbild­nings­program och för en beskrivning av metoden.

    Uppföljningen baseras på data hämtade från antagningssystemet NyA och studie­doku­menta­tionssystemet Ladok. Inför analysen har dessa data legat till grund för framtagning av jämförbara antagningsmått för det nämnda ut­bild­nings­programet – antagningsgrad, sammansättning av studentkohorter utifrån urvals­grupper samt meritmedelvärden – samt följande mått för genom­ström­ningen: kvarvaro­grad, prestationsgrad och examensgrad. De sex student­ko­horter som omfattas av analysens mätperiod påbörjade programmet under perio­den 2010−2015.

    Studiens resultat pekar i korthet och i huvudsak på att antag­nings­graden för pro­grammet har minskat betydligt under mätperioden, samtidigt som merit­medelvärdena har ökat – i synnerhet för den ca tredjedelen av studenterna som antagits via resultat vid högskoleprov. Vidare framkommer att såväl kvar­varo­graden som presta­tionsgraden har ökat över tid, samt att under senare hälften av mät­perioden så har studenterna i genomsnitt erhållit sina poäng snabbare än de föregående student­kohorterna. Den ökade kvarvarograden samvarierade i huvudsak med a) minskad antagningsgrad, b) ökad andel studenter från urvals­grupperna betyg utan kom­pletteringar från gymnasieskolans gamla respektive nya betygssystem samt med c) ökade merit­medelvärden. Detta medan den ökade prestationsgraden i huvudsak samvarierade endast med a) minskad an­tag­nings­grad och b) ökade meritmedelvärden. Således ser studentkohorternas samman­sättning utifrån urvalsgrupper ut att ha haft större inverkan på kvar­varograden än på prestationsgraden. Prestationsgradens ökning var dessutom större än kvarvarogradens, vilket kan indikera en ökad poängeffektiviteten i genom­ström­ningen under mätperioden. Dock framstod examens­graden som något pro­ble­matisk, då den varierade tämligen stort under mätperioden och varken följde utvecklingsmönstret för merit­medel­värdena, kvarvaro- eller pre­sta­­tions­graden, och inte heller förändringar i studentkohorternas sammansättning utifrån urvals­grupper.

    I jämförelser med studier utförda av Universitetskanslerämbetet samt Uni­versitets- och hög­skole­rådet framkommer att antagningsgraden för det gran­skade programmet var betydligt lägre än på generell nationell nivå, men också att den sjönk mer under mätperioden. Vidare framkommer inte endast att kvar­varo­graden gott och väl var i paritet med andra högskoleingenjörsprogram i landet, dessutom stod den sig mycket väl i en jämförelse med andra högskole­ingenjörsprogram inom lärosätet. Ökad prestationsgrad var också gemen­sam med utvecklingen på nationell nivå. Dock var ökningen större för det granskade pro­grammet på grund av låg prestationsgrad vid mätperiodens inledning. Vid dess slut hade nivån för prestationsgraden närmat sig de andra yrkesexamens- och gene­rella programmens prestationsgrader. Examensgradens varierande ut­vecklings­trend framstod dock fortfarande som problematisk, och nivåerna var i genom­snitt betydligt lägre än för högskoleingenjörsprogram på nationell nivå. Vidare kan de ökade meritmedelvärdena – i synnerhet gällande resultat från hög­skole­prov – också eventuellt framstå som pro­blematiska om effektivitets- och ekonomi­perspektivet för läro­sätets del ställs mot kravet på breddad rekrytering, vilket inte har analyserats här men som bör ingå i framtida eller kompletterande uppföljningar/utvärderingar.

    I rapportens senare del diskuteras metodologiska aspekter på studien – i synner­het skillnader i mätmetoder jämfört med UKÄ:s årsrapporter – samt reflek­tioner inför fram­tida uppföljningsstudier. Rapporten avslutas med en genom­gång av de väsentligaste metodologiska handgreppen som har gällt för in­hämtning och analys av data.

  • IBRAHIM, MOHAMED ABBDIRAHMAN
    Mälardalen University, School of Business, Society and Engineering.
    The fast-growing trade between China and African Countries2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    According to the IMF, China is today the second world economic power with respect to nominal GDP, an increase from 6th place in the year 2000. Though its GDP surpassed that of the US in 2015 with respect to PPP. On the other side, China is the largest manufacturer and exporter of goods and the second-largest importer of goods worldwide. Since becoming a member of the WTO, China became the largest trading country in the world and has an important role in international trade. It has trade agreements with some countries and continents like Australia, Pakistan and Africa.

    This thesis looks deeply into China’s economic relations and trade with African countries after 2000. It focuses on China’s interest in African resource-rich countries, while China’s industrialization is increasing rapidly. It also discusses how both China and African countries benefit from this trade.

    As China’s exports are increasing, this thesis will highlight how China’s low-cost goods are affecting the often-poor African consumers.

  • Norén, Ebba
    et al.
    Mälardalen University, School of Education, Culture and Communication.
    Saarela, Anette
    Mälardalen University, School of Education, Culture and Communication.
    Högläsning ur fem lärares perspektiv: Vad lärarna anser om högläsning samt hur högläsning tillämpas.2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med studien är att undersöka hur fem lärare i årskurs 1 arbetar med högläsning. Vi har använt oss av en kvalitativ forskningsmetod med semistrukturerade intervjufrågor. Resultatet visar att lärarna i vår studie inte använder sig av högläsning som inlärningsmetod, utan mer för att skapa ett lugn. De fem lärarnas val av högläsningstexter är främst av det skönlitterära slaget. Vår slutsats är att högläsning som didaktiskt redskap och inlärningsmetod inte används i sin fulla potential.

  • Hagberg Kindlund, Sofia
    Mälardalen University, School of Education, Culture and Communication.
    Ett nytt ord för det vi gör dagligen: Pedagoger på några fritidshem talar om undervisning och hur de genomför den2019Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Studiens syfte var att undersöka hur undervisning, som den förklaras i kapitel 4 i Lgr 11, beskrivs av några pedagoger vid några fritidshem. Studien gjordes med sociokulturell ansats och kvalitativ metod i form av fokusgruppsintervjuer. De empiriska resultaten analyserades med delar av Wengers teori om praktikgemenskaper och indikerade att en delad repertoar kring begreppet undervisning saknades och att det ömsesidiga engagemanget ibland var bristfälligt. Pedagogerna tycktes trygga i att genomföra sitt uppdrag, men uttryckte att de fått minimal fortbildning kring Lgr 11. Stor vikt lades vid värdegrunden och relationer. Brist på planeringstid, personalbrist, icke ändamålsenliga lokaler och stora barngrupper sågs som hindrande för arbetet. Resultatet överensstämmer i stort med aktuell forskning i ämnet. I resultatdiskussionen diskuterades att fortbildning kring Lgr 11 och ett mer aktivt läroplansarbete skulle kunna vara gynnsamt för undervisningen i fritidshemmet. Ett intressant ämne för fortsatt forskning vore pedagogers syn på balansgången mellan omsorg, utveckling och lärande. 

  • Alsallakh, Nour
    Mälardalen University, School of Business, Society and Engineering.
    En kvalitativ undersökning om massmedians framställning av ungdomar i socialt utsatta områden: "Jag tycker inte om att folk ser ner på oss"2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Loquist, Rebecka
    et al.
    Mälardalen University, School of Health, Care and Social Welfare.
    Hällqvist, Nicole
    Mälardalen University, School of Health, Care and Social Welfare.
    Att förlora en del av sig själv: En systematisk litteraturstudie2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • Niklasson, Erik Viking
    Mälardalen University, School of Innovation, Design and Engineering.
    Fieldbus Communication: Industry Requirements and Future Projection2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Fieldbuses are defined as a family of communication media specified for industrial applications. They usually interconnect embedded systems. Embedded systems exist everywhere in the modern world, they are included in simple personal technology as well as the most advanced spaceships. They aid in producing a specific task, often with the purpose to generate a greater system functionality. These kinds of implementations put high demands on the communication media. For a medium to be applicable for use in embedded systems, it has to reach certain requirements. Systems in industry practice react on real-time events or depend on consistent timing. All kinds are time sensitive in their way. Failing to complete a task could lead to irritation in slow monitoring tasks, or catastrophic events in failing nuclear reactors. Fieldbuses are optimized for this usage. This thesis aims to research fieldbus theory and connect it to industry practice. Through interviews, requirements put on industry are explored and utilization of specific types of fieldbuses assessed. Based on the interviews, guidelines are put forward into what fieldbus techniques are relevant to study in preparation for future work in the field. A discussion is held, analysing trends in, and synergy between, state of the art and the state of practice. A strong momentum is identified. The traditional communication media Ethernet, not originally intended for time-sensitive industry appliances, are expanding throughout the field, both in research and, maybe most interestingly, in practice. It is mainly motivated through qualities of somewhat lesser technical significance. A plethora of methods have emerged trying to optimize Ethernet for real-time purposes, each one resulting in some drawbacks, which are in turn addressed. In the end of this paper, the large-scale trend of Real-Time Ethernet is questioned and discussed.

  • Govardhan Rao, Sirisha Bai
    Mälardalen University, School of Innovation, Design and Engineering.
    A Comparative Analysis of Argumentation Languages in the Context of Safety Case Development2019Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The safety case creation has become an explicit requirement in most of the safety-critical domains to ensure the safety of a system or an application. In the process of developing a safety case, the foremost requirement is choosing an efficient argumentation language which fulfills all the functionalities needed to develop a safety case.

     

    In general, there are text-based argumentation notations and graphics-based argumentation notations to represent a safety case. In this paper we are comparing and analyzing the graphics-based argumentation notations like Goal Structuring Notation (GSN), Claims Arguments and Evidence (CAE), Structured Assurance Case Metamodel (SACM, the standardized modelling language to describe the safety case), NOR-STA Services (software platform which support graphics-based notations), Resolute (which is both language and tool that supports graphics-based notations) and Dynamic Safety Cases (special type of safety case which supports graphics-based notations such as GSN).

     

    In this thesis, we compared the argumentation notations with respect to different aspects in the context of safety case development. We present our findings like the types of stakeholders gaining benefits from different types of notations, the list of domains where these types of notations are applicable. We also presented the major advantages and disadvantages of using different argumentation notations considering certain features like understandability, standardization, consistency, maintenance, traceability, and assessment in the context of safety case development.

     

  • Nyussupov, Adlet
    Mälardalen University, School of Innovation, Design and Engineering.
    Using Autonomous Agents for Software Testing Based on JADE2019Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The thesis work describes the development of a multiagent testing application (MTA) based on an agent approach for solving challenges in regression testing domain, such as: reducing the complexity of testing, optimizing the time consumption, increasing the efficiency and implementing the automation of this approach for regression testing. All these challenges related to effectiveness and cost, can be represented as measures of achieved code coverage and number of test cases created. A multiagent approach is proposed in this thesis since it allows the implementation of the autonomous behaviour and optimizes the data processing in a heterogeneous environment. In addition, the agent-based approach provides flexible design methods for building multitask applications and conducting parallel task execution. However, all of these advantages of using an agent-based approach need to be investigated in the regression testing domain for realistic scenarios. Therefore, a hypothesis was formulated in order to investigate the efficiency of the MTA approach using an experiment as the main research method for obtaining results. The thesis includes a comparison analysis between the MTA and well-known test case generation tools (i.e. EvoSuite and JUnitTools) for identifying the differences in terms of efficiency and code coverage achieved. The comparison results showed advantages of the MTA within regression testing context due to optimal level of code coverage and test cases. The outcome of the thesis work moves toward solving the aforementioned problems in regression testing domain and shows some advantages of using the multagent approach within regression testing context.

  • Abed Jaser, Zaid
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Al-Braichi, Osamah Haitham Sabhan
    Mälardalen University, School of Innovation, Design and Engineering.
    Measuring Test Coverage in Embedded Software Development Branches2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Most of the hardware products today, especially those that people interact with, are controlled by software. There are many devices with inbuilt software which many people do not bother to notice. Software may be critical in terms of strict quality requirements due to failures which enable risks of endangering the production and more importantly the lives of people. The testing team of Westermo Network Technologies AB faced a challenge with not being able to identify the coverage of tested cases in software. Identifying the coverage of total executed test cases enables the possibility of knowing the potential future quality of a software. By reaching such a stage a software will likely not suffer from failures due to higher quality, therefore the lives of people and the production at stake will not get harmed. The essential problem is that test cases are both tested and skipped, which makes it more difficult for the company to identify what has been actually tested and skipped. The purpose of this thesis is to identify and calculate the coverage of test cases, the process was mainly to understand the essence in the identification of executed test cases. The ethical aspect of putting people's lives at stake is what inspired us to investigate software failures. Software is typically tested before a release, therefore our investigation was to research testing process of software. When investigating test result over many days and test systems we developed a coverage calculator system which helps Westermo to decide and determine the release of tested software, either the software test result is acceptable for a release or not.

  • Matović, Aleksandar
    Mälardalen University, School of Innovation, Design and Engineering.
    CASE STUDIES ON MODELING SECURITY IMPLICATIONS ON SAFETY2019Independent thesis Advanced level (degree of Master (One Year)), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Security is widely recognized as an important property that is tightly interdependentwith safety in safety-critical systems. The goal of this thesis is to conduct case studies on the implications that security attacks may have on the safety of these systems.In these case studies, we formally model the design of a robot arm system, verify itssecurity against some potential attack scenarios, propose mitigation techniques andanalyze their effectiveness. In order to achieve a thorough knowledge about the current formal verification approaches and select a proper modeling language/tool, weconducted an extensive literature review. We performed this review following a wellknown approach proposed by Barbara Kitchenham. The procedure and outcomes ofthis review are detailed in this thesis. Based on the literature review, we chose TRebeca, (a timed extension of Rebeca), as the formal language to model the robot armsystem, attack scenarios and mitigation techniques. Rebeca is an actor-based modeling language with a Java-like syntax that is effectively used to model concurrent anddistributed systems. This language is supported by a full-featured IDE called Afra,which facilitates the development of (T)Rebeca models and verification of correctnessproperties (such as safety and security) on them. Among several functions providedby a robot arm system, we chose two important functions i.e., Stand Still Supervisionand Control Error Supervision, which we believe would be interesting for attackerstrying to get control over robot movements. In particular, attackers may maliciouslymanipulate the parameter values of these functions, which may lead to safety issues.In order to find suitable attack scenarios on these functions, we studied the mostimportant security protocols used in safety-critical industrial control systems. Weobserved that these systems are vulnerable to several attacks, and man-in-the-middleattack is among the most successful attacks on these systems. Based on this study,we devised two attack scenarios for each function and modeled them with TRebeca.To mitigate these attacks, we proposed a redundancy technique, whose effectivenesswas also assured by Afra.

  • Nodemar, Victor
    et al.
    Mälardalen University, School of Health, Care and Social Welfare.
    Betances Feliz, Tayron
    Mälardalen University, School of Health, Care and Social Welfare.
    EKONOMI – ETT SJÄTTE SINNE I SOCIALT ARBETE: En kvantitativ studie om socionomstudenters ekonomiska kunskaper2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie har varit att undersöka socionomstudenters financial literacy, genusaspekten av financial literacy och socionomstudenters attityder till ekonomi inom socialt arbete och samhället. Studien är uppbyggd på en kvantitativ undersökning i form av en enkät i vilken 126 socionomstudenter har deltagit, 113 kvinnor och 13 män. Respondenternas svar analyserades med bivariat statistisk analys. Avseende socionomstudenters financial literacy framkommer det i resultatet att endast fyra av 12 frågor besvarades korrekt av hälften eller fler respondenter. I resultatet framkommer även att män tenderar att ha högre financial literacy än kvinnor. Dock tenderar kvinnor att ha högre kunskaper om huslån och informationsinsamling gällande produkter. Slutligen visade studien inte något samband mellan de undersökta variablerna (genus, ålder, etnicitet, arbete, föräldrars utbildning, sparande, inställning till ekonomi i socialt arbete) och socionomstudenters financial literacy. Slutsatserna i den aktuella studien är att socionomstudenters financial literacy är bristfällig och att det finns ett samband mellan genus och individens financial literacy.

  • Stjärnsäter, Marianne
    Mälardalen University, School of Health, Care and Social Welfare.
    Socialarbetares arbetsmiljö och hur den påverkar deras arbete med barn.2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Research suggests that working conditions for social workers have deteriorated over time, with regard to workload, stress and client contact. This study is a quantitative survey with 162 social workers. The study aims to investigate how social workers experience their working environment and their sense of stress in the profession and how they relate to the amount of time given for meetings with children.

    Results show that the social workers are stressed and experience the workload too heavy. Contradictory to previous research this study reveals that social workers are as positive as negative to changes that have taken place within the organization. More time for client contact is desired by 98% of the respondents. The study finds a connection between lack of time to meet clients and stress. There is also a correlation between stress and wrongly made decisions. The biggest factor contributing to incorrect decisions is lack of background information of the child. The study show that 17% of the social workers have experienced abuse of power within the organization frequently or daily. The study concludes that those who suffer most from the changes that have taken place within the organization are those that the social workers strive to help; children.

  • Tsai Aronsson, Ching-Pei
    et al.
    Mälardalen University, School of Health, Care and Social Welfare.
    NADIROV MAKSUTOVA, SAIDA
    Mälardalen University, School of Health, Care and Social Welfare.
    LIVET PÅ ETT VÅRD- OCH OMSORGSBOENDE FÖR ÄLDRE2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: In Sweden, a fifth of the population is aged over 65. Increasing lifespan leads to both physical and mental impairments. To deal with the effects of early development of partially age-related disabilities, the municipality can offer home care service in the elderly's private home. When home care service is not long sufficient for the elderly person to continue staying in their own home, the elderly can apply to be moved to nursing home. There, they can receive 24-hour care to maintain a good quality of life. Aim: To describe the experiences of elderly living in a nursing home. Method: Systematic qualitative literature study with descriptive synthesis. Result: Three main theme were identified:  everyday is governed by the institutes routines, importance of social interactions, and existential reflections. Seven subthemes immerged: to be more dependent, security with the practical help, need for social interaction, need for trust in a health care meeting, the fear of a deteriorating health condition, that death is near, acceptance for life as it is. Conclusion: Treatment and understanding from care staff during the caring situation consider to be important for elderly in order to enable abilities to adapt their new situation.

  • Kaisso, Nour
    Mälardalen University, School of Education, Culture and Communication.
    Modeling the Dynamics of Opinion Change: when Individuals may have Different Overt and Covert Opinions2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis aims to present and explore a mathematical model of attitude change within society. Building on the foundations set up by Lave and March [2] and Eriksson and Strimling [1] we propose a model which includes the possibility of having an overt as well as covert opinion by any individual on a given issue. We lay out the verbal and mathematical specifications for our model, interpret them in the framework of discrete-time dynamical systems and simulate the behavior using Matlab programming. Finally, we propose three conjectures based on the results of our simulations and proceed to subject two of them to further analytical treatment.

  • Wennberg, Karin
    et al.
    Mälardalen University, School of Education, Culture and Communication.
    Larsson, Anna
    Mälardalen University, School of Education, Culture and Communication.
    En känsla av delaktighet: - Om rätten att få styra sitt val till gymnasiesärskolan.2019Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Ett av de kanske viktigaste valen elev i grundsärskolan får göra, är valet till gymnasiesärskolan. Det är ett val som kan leda till elevens framtida yrke. Finns det ingen elevdelaktighet på skolan, utan alla beslut tas av människor runt omkring eleven, kan det leda till att felaktiga val görs av eleven. Syftet med vår studie är att undersöka hur olika yrkesgrupper inom grundsärskolan beskriver att de arbetar för att främja elevernas   delaktighet vid valet till gymnasiesärskolan. Vi har utgått från en kvalitativ ansats i vår studie. Vi intervjuade tre olika yrkesgrupper på två olika grundsärskolor; en lärare, en elevassistent och en studie- och yrkesvägledare. Resultatet visar att alla våra olika yrkesgrupper är viktiga för eleven och att ett samarbete mellan yrkesgrupperna främjar arbetet med att göra eleven delaktig. Genom att stötta, arbeta förebyggande och genom vägledning visar alla våra yrkesgrupper eleven mot rätt väg för att göra rätt val. Vårt resultat visar också på en tydlig medvetenhet hos samtliga yrkesgrupper att valet till gymnasieskolan blir meningsfullt för eleven.