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  • 1101.
    Balachandramurthi, Arun Ramanathan
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Moverare, Johan
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Linköping University, Department of Management and Engineering, Linköping, Sweden.
    Dixit, Nikhil
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Deng, Dunyong
    Linköping University, Department of Management and Engineering, Linköping, Sweden.
    Pederson, Robert
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Microstructural influence on fatigue crack propagation during high cycle fatigue testing of additively manufactured Alloy 7182019In: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 149, p. 82-94Article in journal (Refereed)
    Abstract [en]

    A study of the microstructure of additively manufactured Alloy 718 was performed in order to better understand the parameters that have an influence on the fatigue properties of the material. The specimens were manufactured using two powder bed fusion techniques – Electron Beam Melting (EBM) and Selective Laser Melting (SLM). Four point bending fatigue tests were performed at room temperature with a stress ratio of R = 0.1 and 20 Hz frequency, on material that was either in hot isostatically pressed (HIP) and solution treated and aged (STA) condition or in STA condition without a prior HIP treatment. The grains in the SLM material in the HIP + STA condition have grown considerably both in the hatch and the contour regions; EBM material, in contrast, shows grain growth only in the contour region. Fractographic analysis of the specimens in HIP + STA condition showed a faceted appearance while the specimens in STA condition showed a more planar crack appearance. The crack propagation occurred in a transgranular mode and it was found that precipitatessuch as NbC, TiN or δ-phase, when present, did not affect the crack path. The areas with larger grains corresponded to the faceted appearance of the fracture surface. This could be attributed to the plastic zone ahead of the crack tip being confined within one grain, in case of the larger grains, which promotes single shear crack growth mode

  • 1102.
    Balachandramurthi, Arun Ramanathan
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Moverare, Johan
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Linköping University, Department of Management and Engineering, Linköping, Sweden.
    Dixit, Nikhil
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Pederson, Robert
    University West, Department of Engineering Science, Division of Welding Technology.
    Influence of defects and as-built surface roughness on fatigue properties of additively manufactured Alloy 7182018In: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 735, p. 463-474Article in journal (Refereed)
    Abstract [en]

    Electron beam melting (EBM) and Selective Laser Melting (SLM) are powder bed based additive manufacturing (AM) processes. These, relatively new, processes offer advantages such as near net shaping, manufacturing complex geometries with a design space that was previously not accessible with conventional manufacturing processes, part consolidation to reduce number of assemblies, shorter time to market etc. The aerospace and gas turbine industries have shown interest in the EBM and the SLM processes to enable topology-optimized designs, parts with lattice structures and part consolidation. However, to realize such advantages, factors affecting the mechanical properties must be well understood – especially the fatigue properties. In the context of fatigue performance, apart from the effect of different phases in the material, the effect of defects in terms of both the amount and distribution and the effect of “rough” as-built surface must be studied in detail. Fatigue properties of Alloy 718, a Ni-Fe based superalloy widely used in the aerospace engines is investigated in this study. Four point bending fatigue tests have been performed at 20 Hz in room temperature at different stress ranges to compare the performance of the EBM and the SLM material to the wrought material. The experiment aims to assess the differences in fatigue properties between the two powder bed AM processes as well as assess the effect of two post-treatment methods namely – machining and hot isostatic pressing (HIP). Fractography and metallography have been performed to explain the observed properties. Both HIPing and machining improve the fatigue performance; however, a large scatter is observed for machined specimens. Fatigue properties of SLM material approach that of wrought material while in EBM material defects severely affect the fatigue life. © 2018 Elsevier B.V.

  • 1103.
    Balachandramurthi, Arun Ramanathan
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Olsson, Jonas
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Snis, Anders
    Arcam EBM, SE-431 37, M€olndal, Sweden.
    Moverare, Johan
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Department of Management and Engineering, Link€oping University, SE-581 83, Sweden.
    Pederson, Robert
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Microstructure tailoring in Electron Beam Powder Bed Fusion Additive Manufacturing and its potential consequences2019In: Results in Materials, ISSN 2590-048X, Vol. 1Article in journal (Refereed)
    Abstract [en]

    Electron Beam Powder Bed Fusion process for Alloy 718 was investigated, in the sense of microstructural evolution with varying process conditions. The existence of a geometric relationship between the melt front and the processing parameters was observed. By understanding and capitalizing on this relationship, it was possible to obtain columnar, equiaxed or bimodal microstructure.

  • 1104.
    Balachandramurthi Ramanathan, Arun
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Moverare, Johan
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Linköping University, Department of Management and Engineering, SE 581 83 Linköping, Sweden.
    Mahade, Satyapal
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Pederson, Robert
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Additive Manufacturing of Alloy 718 via Electron Beam Melting: Effect of Post-Treatment on the Microstructure and the Mechanical Properties.2018In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 12, no 1, article id E68Article in journal (Refereed)
    Abstract [en]

    Alloy 718 finds application in gas turbine engine components, such as turbine disks, compressor blades and so forth, due to its excellent mechanical and corrosion properties at elevated temperatures. Electron beam melting (EBM) is a recent addition to the list of additive manufacturing processes and has shown the capability to produce components with unique microstructural features. In this work, Alloy 718 specimens were manufactured using the EBM process with a single batch of virgin plasma atomized powder. One set of as-built specimens was subjected to solution treatment and ageing (STA); another set of as-built specimens was subjected to hot isostatic pressing (HIP), followed by STA (and referred to as HIP+STA). Microstructural analysis of as-built specimens, STA specimens and HIP+STA specimens was carried out using optical microscopy and scanning electron microscopy. Typical columnar microstructure, which is a characteristic of the EBM manufactured alloy, was observed. Hardness evaluation of the as-built, STA and HIP+STA specimens showed that the post-treatments led to an increase in hardness in the range of ~50 HV1. Tensile properties of the three material conditions (as-built, STA and HIP+STA) were evaluated. Post-treatments lead to an increase in the yield strength (YS) and the ultimate tensile strength (UTS). HIP+STA led to improved elongation compared to STA due to the closure of defects but YS and UTS were comparable for the two post-treatment conditions. Fractographic analysis of the tensile tested specimens showed that the closure of shrinkage porosity and the partial healing of lack of fusion (LoF) defects were responsible for improved properties. Fatigue properties were evaluated in both STA and HIP+STA conditions. In addition, three surface conditions were also investigated, namely the 'raw' as-built surface, the machined surface with the contour region and the machined surface without the contour region. Machining off the contour region completely together with HIP+STA led to significant improvement in fatigue performance.

  • 1105.
    Balaj, Adenis
    et al.
    University West, Department of Economics and IT, Divison of Informatics.
    Berg, Ronnie
    University West, Department of Economics and IT, Divison of Informatics.
    Konsekvenser vid införandet av automatiserade processer: Utifrån ett verksamhetsperspektiv2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this study, we investigated the consequences of implementing automated processes from an employee perspective. The study has been limited to Trollhättan Stad and their employees. We have investigated two different processes, which are "Grävningstillstånd" and "Avvikelser". Local activities aim today to conduct e-government, which includes automated processes. Automated processes can result in better work efficiency, but it may also require more technical expertise and skill of the staff. People can be an obstacle in the process, and it may mean that the process will take longer to be carried out. The study was conducted using a qualitative method where data collection occurred through interviews and document study. Six interviewees that all were employees in Trollhättan Stad in various administrations have been interviewed in this study. These interviews have been conducted in a semi-structured way. Search theory has been used through various search engines and databases. Interviewee's real names have been replaced with names of their roles in Trollhättan Stad, thus reducing the risk of information linked to a specific person. The theory chapter describes the first general information on e-government and collected information of the consequences of automated processes. We have determined that automated processes leads to better work efficiency, enables more control of tasks and that more cases are submitted. Automated processes can lead to increased costs, with the purchase of various services and goods at maintaining the system. Although in other areas of the organization it leads to cost savings. In some cases, the new systems require some education of the employees.

  • 1106. Balakrishnan, A.
    et al.
    Martin, C. L.
    Saha, B. P.
    Joshi, S.
    Modelling of compaction and green strength of aggregated ceramic powders2011In: Journal of the American Ceramic Society, Vol. 94, no 4, p. 1046-1052Article in journal (Refereed)
    Abstract [en]

    The behavior of aggregated ceramic powders is investigated using discrete element simulations. Aggregation (particles bonded by fused necks, resulting from calcination) is a common phenomenon observed during ceramic powder processing. In the present study, a small volume element of aggregated powder made of 40 spherical aggregates is modelled. Each aggregate comprises ∼500 spherical crystallites of 100 nm size. Mechanical interactions between crystallites are modelled to take into account strong bonds that form during calcination (with the possibility of breakage to model crushability), and adhesive contacts that form between submicrometer particles due to surface energy effects. The impact of having strongly bonded crystallites (high degree of calcination) or of having strongly adhesive particles (to mimic the use of a binder) is also investigated. Close die compaction and unloading from different compaction densities are carried out. It is observed that the final densification of the powder depends on the selection of process parameters like bond strength and work of adhesion between particles. This study also demonstrates a proportional relationship between the number of broken bonds in the green compacts and its strength. © 2010 The American Ceramic Society.

  • 1107. Balakrishnan, A.
    et al.
    Pizette, P.
    Martin, C. L.
    Joshi, S. V.
    Saha, B. P.
    Effect of particle size in aggregated and agglomerated ceramic powders2010In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 58, no 3, p. 802-812Article in journal (Refereed)
    Abstract [en]

    This work describes the compaction of agglomerated and aggregated ceramic powders with special emphasis on the role of primary particle size. Discrete element simulations are used to model weakly bonded agglomerates as well as strongly bonded aggregates. Crushing tests are carried out to obtain the characteristic strength of single agglomerate and aggregate. Microstructure evolution and stress-strain curves indicate that aggregates undergo a brittle to plastic-like transition as particle size decreases below 50 nm. It is shown that agglomerates made of nanoparticles exhibit much greater strength than those made of micron-sized particles, with an approximately inverse linear relationship with primary particle size. Simulation of the uniaxial compaction of a representative volume element of powder demonstrates that adhesive effects are responsible for the difficulty to compact nanopowders and for the heterogeneity of microstructure prior to sintering. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  • 1108.
    Balalia, Alina
    et al.
    Academy of Economic Studies in Bucharest.
    Rauhut, Daniel
    Kungliga Tekniska Högskolan.
    Assessing TerritorialImpact Assessment: the Case of Services of General Interest2012Conference paper (Other academic)
  • 1109.
    Balder, Christina
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    IT relaterad stress och personlighet: hur ser relationen mellan femfaktormodellen och IT relaterad stress ut?2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    We humans live in an increasingly digitized world and this affects both our private and working lives. Regardless of occupation, modern technology has resulted in a digitized work life. Even if the change that has happened within the latest years has resulted in what many would regard as positive aspects such as flexibility, availability and mobility, it is not a work situation that suits everyone.

    This study intended to investigate the associations between IT related stress in the working life and personality, based on the five-factor model (FFM). Previous research has established that out of the five personality traits that constitutes FFM, it is neuroticism and conscientiousness that has strong association with different forms of stress and stress-related phenomena.

    Data was collected from 170 participants using an online survey. The survey that the participants answered to consisted partly of a scale developed with the purpose of capturing IT related stress in work life and partly of a mini scale for FFM (IPIP30).

    The results showed, that the individuals least affected by IT related stress, or potential factors that affect how an individual copes with IT related stress, are individuals with high levels of conscientiousness.

  • 1110.
    Balder, Christina
    et al.
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Björkman, Therese
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Dark Triad: De mörka personlighetsdragen och upplevd stress2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In our time, stress is a factor that greatly influences our lives. Previous research has examined individual differences in relation to stress mainly through Costa and McCrae's (1985) five factor model (FFM). New research indicates that the current construct of Dark Triad consisting of narcissism, psychopathy and Machiavellianism needs further research. Research regarding the dark personality traits in relation to stress is limited. The purpose of the present study was to investigate possible correlations between the dark personality traits vulnerable narcissism and grandiose narcissism and psychopathy and Machiavellianism as well as the possible correlations between these dark personality traits and perceived stress. The number of participants was 346. The participants answered a questionnaire using different scales for each of the dark personality traits as well as one for perceived stress. PSS-10 for perceived stress, HSNS for vulnerable narcissism and NPI-13 for grandiose narcissism, EPA-SSF for psychopathy and MACH-IV for Machiavellianism. The results from the analyses show a significantly strong, positive correlation between vulnerable narcissism and perceived stress, as well as a negative correlation between grandiose narcissism and perceived stress. One conclusion of this study is that we suggest that narcissism should be treated as two separate personality traits in future research related to stress. The results also showed that we cannot draw any conclusions regarding differences between psychopathy and Machiavellianism in relation to perceived stress.Based on the results, we also suggest that primary and secondary psychopathy should be used in future research to investigate possible correlations between perceived stress.

  • 1111.
    Baldock, Karina
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Anhörigas upplevelser av bemötande inom psykiatrisk vård: Den utfrysta anhöriggruppen2018Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Making people feel safe and secure in health care is one of the most importanttasks of nursing. A good response is not only important to patients but also to their relatives. Previously, for most of last century, relatives were not welcome to the psychiatric health care. But research show they are in need of information and support from the health care. It istherefore important that nursing staff learn what kind of response the relatives require.

    Aim: To investigate how relatives experience the response from nursing staff within thepsychiatric care.

    Method: Qualitative interviews with eight respondents, where the answers were transcribedand analysed to learn how they had experienced the response from nursing staff. In theanalysis the text was condensed and abstracted into subcategories and categories.

    Result: The analysis resulted in twelve subcategories and three categories; Feeling valued andmaking a difference, Feeling left out and not wanted, Response improvement suggestions.

    Conclusion: This study shows that relatives still to a large extent are left out fromparticipation in psychiatric care, although society has placed the main responsibility on themto support their next of kin. The result shows that relatives require more information andparticipation to be able to support their next of kin. Getting a good response from nursing caremeans for them to be seen, listened to and getting information and support. They don´t wantto be left out any more.

  • 1112.
    Balic, Adnan
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Chefers syn på motivation och hur de skapar motivation bland medarbetare i en teknisk verksamhet2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Motivation is a complex area and at the same time an important factor to create and maintain in workplaces. The purpose of this study is to investigate the managers' views on motivation and how they create motivation in a technical business. This essay examines how managers motivate their employees based on internal and external motivation aspects, and how they go about maintaining motivation in the workplace. This was done by using a qualitative method where interviews were conducted with four managers; three men and one woman. After the interviews were done, the material was analyzed by using a thematic analysis method. This analysis identified a number of concepts that the participants perceived to be important regarding external and internal motivation. The themes that emerged were job security, communications and development. These three themes were the basis of the motivational work, which the informants described as having different meanings for inner and outer motivation. The three themes in the results were according to the informants' important factors that need to be considered in motivational work. To have good communication with employees, and that the employees should feel safe at work, is a basis for how motivation occurs. Development was also an important theme since employees need to feel that they can develop in the workplace. This allows employees to strive after being more efficient, hence willing to learn new things.

  • 1113.
    Balina, Kranthi Kumar
    University West, Department of Engineering Science.
    Spring back behaviour of hole expansion with various punch movement and positions.2011Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A methodology for making a spring back behaviour of hole expansion in gas tank. Work is initiated for SAAb automobile and the geometry of model is created by using the software’s called Unigraphics and hyper mesh and secondly the simulation of the model is done in Ls-dyna to know the spring back behaviour of hole with various depth and positions of the punch. The yield strength of the element and stress, strain distribution and different radius of the blank are used to reduce the cracks at the lower edge of the blank. Steel material is used and the thickness of the material (0.229mm). The simulation of the work includes loading of punch and its displacement. This study demonstrates the efficiency of the model to simulate the hole expansion and better understanding of the expansion of radius and spring back angle.

  • 1114.
    Bancks, Ann-Sofie
    et al.
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Ivarsson, Karin
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Förutsättningar som behövs för att implementera personcentrerad vård inom Kommunal Hemsjukvård: En kvalitativ intervjustudie2017Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background According to the Swedish Association of Local Authorities and Regions should all healthcare professionals within the regions, municipalities and county councils work for an introduction of person-centered care, which will aim to promote good and equitable health care and to enhance patients and users as co-creators in their own care process.

    Aim The aim of this study was to describe the district nurses' perception of person-centered care and the conditions required to implement person-centered care in home care.

    Method A qualitative study was conducted using eleven face-to face interviews.

    Results The analysis showed that the district nurses perceive person-centered care was to have the person at the center when it comes to planning and implementation of health care. To achieve this goal the nurses declared the need for certain conditions. These are reported to be team work, support from the organization and patient involvement in their care.

    Conclusion All nurses in the study were positive to a person-centered care approach and basically they were aware of the meaning of the term. The district nurses who had recently undergone specialized training focusing on district nursing had a more scientifically based definition of what person-centered mean In relation to those with older training. The former appeared more likely to work on a basies of a person-centred approach and were more positive to develop such approach in health care.

  • 1115.
    Bandgren, Ann-Charlotte
    et al.
    University West, Department of Informatics and Mathematics.
    Ramadani, Suzana
    University West, Department of Informatics and Mathematics.
    Stressar e-post?2003Independent thesis Advanced level (professional degree)Student thesis
  • 1116.
    Bandgren, Lena
    et al.
    University West, Department of Technology, Mathematics and Computer Science.
    Eriksson, Maria
    University West, Department of Technology, Mathematics and Computer Science.
    Johansson, Annica
    University West, Department of Technology, Mathematics and Computer Science.
    Symbolbaserad interaktion i vården: ett komplement till VIPS2004Independent thesis Advanced level (professional degree)Student thesis
  • 1117.
    Bandic, Mia
    et al.
    University West, Department of Health Sciences, Section for health promotion and care sciences.
    Baban, Vian
    University West, Department of Health Sciences, Section for health promotion and care sciences.
    Attityder gentemot sexualförbrytare inom kriminalvården2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Professionals' attitude towards sex offenders is a field that requires more research. Former studies, made in other countries, have shown that the public and often even professionals have negative attitudes towards this type of offenders. In Sweden there is no previous study that investigates professionals' attitudes towards sex offenders. The aims of the present study were to describe the general perception of attitudes towards sex offenders among prison personnel in Sweden, and to investigate if these attitudes affect their professional work. Respondents in this study participated through a web based inquiry. The participants were professionals working closely with sex offenders. The results show that personnel with good knowledge about sex crimes are motivated in their work with sex offenders. Furthermore, the results also show that personnel are optimistic to treating individuals who have been convicted of sex offending. They also consider that attitudes, among the personnel, affect the treatment of the offenders and in that way it can also affect the nursing of them. Because of the low number of participants in this study, caused by a relatively great external dropout, one should be cautious in interpreting the results and not generalize the results to represent prison wards in Sweden.

  • 1118.
    Bandyopadhyay, Robi
    University West, Department of Technology.
    Modelling of the flame spraying process2003Report (Other (popular science, discussion, etc.))
  • 1119. Bandyopadhyay, S.
    et al.
    Gokhale, H.
    Sundar, J. K. S.
    Sundararajan, G.
    Joshi, S. V.
    A statistical approach to determine process parameter impact in Nd: YAG laser drilling of IN718 and Ti-6Al-4V sheets2005In: Optics and Lasers in Engineering, Vol. 43, no 2, p. 163-182Article in journal (Refereed)
    Abstract [en]

    The numerous unique advantages afforded by pulsed Nd:YAG laser systems have led to their increasing utility for producing high aspect ratio holes in a wide range of materials. Notwithstanding the growing industrial acceptance of the technique, the increasingly tighter geometrical tolerances and more stringent hole quality requirements of modern industrial components demand that "defects" such as taper, recast, spatter etc., in laser-drilled holes are minimized. Process parameters like pulse energy, pulse repetition rate, pulse duration, focal position, nozzle standoff, type of gas and gas pressure of the assist gas are known to significantly influence hole quality during laser drilling. The present study reports the use of Taguchi design of experiments technique to study the effects of the above process variables on the quality of the drilled holes and ascertain optimum processing conditions. Minimum taper in the drilled hole was considered as the desired target response. The entire study was conducted in three phases:(a) screening experiments, to identify process variables that critically influence taper in laser drilled holes, (b) Optimization experiments, to ascertain the set of parameters that would yield minimum taper and (c) validation trials, to assess the validity of the experimental procedures and results. Results indicate that laser drilling with focal position on the surface of the material being drilled and employing low level values of pulse duration and pulse energy represents the ideal conditions to achieve minimum taper in laser-drilled holes. Thorough assessment of results also reveals that the laser-drilling process, optimized considering taper in the drilled hole as the target response, leads to very significant improvements in respect of other hole quality attributes of interest such as spatter and recast as well. © 2004 Elsevier Ltd. All rights reserved.

  • 1120. Bandyopadhyay, S.
    et al.
    Sarin Sundar, J. K.
    Sundararajan, G.
    Joshi, S. V.
    Geometrical features and metallurgical characteristics of Nd: YAG laser drilled holes in thick IN718 and Ti-6Al-4V sheets2002In: Journal of Materials Processing Technology, Vol. 127, no 1, p. 83-95Article in journal (Refereed)
    Abstract [en]

    Laser drilling is increasingly becoming the method of choice for precision drilling of a variety of components, particularly in the aircraft industry. Notwithstanding the current level of acceptance of laser drilling in the aerospace industry, a number of defects such as spatter, recast and taper are associated with laser drilled holes and elimination of these defects is the subject of intense research. The present paper deals with Nd:YAG laser drilling of 4 and 8mm thick sections of IN718 and Ti-6Al-4V materials. The influence of type of material and its thickness, as well as parametric impact of key process variables like pulse frequency and pulse energy, have been determined. In the course of this study, relevant geometrical features of the drilled holes, like hole diameter and taper angle, have been comprehensively investigated. In addition, all metallurgical characteristics of interest, viz extent and nature of spatter, recast and heat-affected zone, have been evaluated. Effort has also been made to obtain some insights into the evolution of a through-thickness hole during laser percussion drilling of thick sections by careful experimentation involving monitoring the progression of the drilled hole with increasing number of laser pulses. Issues pertaining to variation of taper with depth of hole, change in crater depth with progressive drilling and specific energy consumption are also discussed. © 2002 Elsevier Science B.V. All rights reserved.

  • 1121. Banerjee, D.
    et al.
    Joshi, Shrikant V.
    Accuracy, Reliability and Reproducibility of Various Mechanical Test Techniques: Preface1996In: Transactions of the Indian Institute of Metals, ISSN 0019-493X, Vol. 49, no 5, p. R1-R2Article in journal (Other academic)
  • 1122.
    Bara, Enisa
    et al.
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Masalcha, Nadine
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Kommunikationens roll i arbetet med huvudräkningsstrategier: en granskning av ett läromedel i årskurs 1 – 32018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: TIMSS (Trends in International Mathematics and Science Study) är en studie som mäter elevers kunskaper i matematik och NO. Enligt TIMSS rapport (Skolverket, 2012) är matematikundervisningen i svenska skolor till störst del läroboksstyrd och matematikläroboken styr undervisningen i större utsträckning än i andra EU/OECD länder. Det innebär att det som avgör vad elever lär sig är vad läroboken har att erbjuda. TIMSS rapport visar också att svenska elevers resultat i matematik sjunker i jämförelse med andra länder. År 1991 avskaffades förhandsgranskningen av läromedel och idag ligger det på organisationen och/eller läraren att välja läromedel som leder till att elever utvecklar de förmågor som svarar mot kursplanen i matematik. I elevers utveckling av matematiska förmågor spelar kommunikationen en betydande roll (Ahlberg, 1995; Säljö, 2015). Syfte: Syftet med vår studie är att undersöka vilka uppgiftstyper elever får arbeta med genom samtalsbilderna som finns i elevböckerna Favorit matematik 1-3 samt vilka huvudräkningsstrategier elever i årskurs 1-3 ges möjlighet att utveckla i samma läromedel. Syftet är även att undersöka hur och i vilken utsträckning som uppgifterna och samtalsbilderna uppmanar eller inbjuder elever att kommunicera matematik verbalt. Slutligen vill vi undersöka om det finns någon progression mellan årskurserna 1-3 vad gäller huvudräkningsstrategier och uppgiftstyper. Metod: I studien har olika analysinstrument använts. Vi har valt att göra en innehållsanalys med en kvalitativ och kvantitativ del. Det innebär att även vårt analysinstrument utgörs av en kvalitativ del och en kvantitativ del. Den kvalitativa analysen handlar om att identifiera analysenheter och variabler och den kvantitativa delen avser hur frekvent varje variabel är. Resultat: Resultatet visar att elever får tillfälle att möta och pröva olika uppgiftstyper och huvudräkningsstrategier i arbetet med samtalsbilderna och de tillhörande frågorna i Favorit Matematik 1-3. Elever får dock inte möjlighet att utveckla sina matematiska förmågor i lika stor utsträckning via kommunikationen som rekommenderas i lärarhandledningen. Vad gäller progressionen för uppgiftstyp och strategi, finns det ingen jämn tillväxt eller minskning utan det ökar och minskar ojämnt.

  • 1123.
    Baradaran, Soheila
    et al.
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Fahlgren Persson, Ida
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Mindfulness hos äldre i relation till openness, ålder och kön2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Mindfulness is a phenomenon that has been studied over the past three to four decades. With the rapidly growing number of elderly people in today's society, we are faced with new challenges in order to find new ways to meet this target group and their needs so that they can feel a high quality of life even in this phase of life. Mindfulness can be a method for increasing the quality of life of the elderly suffering from both mental and physical disorders.

    In the present study, mindfulness has been studied and whether age and gender can predict the degree of mindfulness. The questions asked were: Are women more mindful than men? To what extent can openness, age and gender explain the degree of mindfulness of the respondents? Quantitative methods were used with a survey as the measuring instrument. The population examined was women and men over 65, of whom 164 were women and 68 were men.

    The result showed that there is no connection between mindfulness and age, or mindfulness and openness as well as no connection between mindfulness and gender. The result that emerged from the study is not in line with what previous research has found.

  • 1124.
    Barake, Manal
    et al.
    University West, Department of Social and Behavioural Studies.
    Hognert, Jenny-Anne
    University West, Department of Social and Behavioural Studies.
    Ny i klassen: en studie av hur elever med annat modersmål än svenska samspelar med lärare och andra elever2006Independent thesis Advanced level (professional degree)Student thesis
    Abstract [sv]

    Bakgrund: Vår studie utgår från det sociokulturella perspektivet vilket säger att barn lär sig handlingsmönster, begreppssystem, språk och värderingar i samspel med andra. Samspelet med omvärlden spelar stor roll för individens utveckling och inlärning. I ett sociokulturellt perspektiv sker lärandet genom interaktion och socialt samspel. Inbyggt i oss finns en social drift och därför är vi utrustade med en språk- och kommunikationsförmåga. Vi behöver kommunicera med varandra för att göra oss förstådda liksom för att förstå andra. Syfte: Syftet med vår studie är att belysa hur nya elever med ett annat modersmål än svenska som kommer nya från förberedelseklass till ordinarie klass, samspelar med lärare och andra elever i teoretiska respektive praktiska ämnen, samt vad samspelet har för innehåll och med vilka samspelet sker. Metod: Vi har gjort en kvalitativ undersökning i form av en fallstudie där vi använt oss av observation. Vi har observerat tre nya elever med ett annat modersmål än svenska i två olika klasser. Under observationens gång har vi använt oss av ett kategorischema. Resultat: Genom vår analys har vi funnit ett mönster i de teoretiska kontra de praktiska ämnena. Detta mönster visar att samspelet mellan elev-lärare och elev-elev är mer öppet och naturligt i de praktiska ämnena än i de teoretiska ämnena. Det öppna klimatet under de praktiska lektionerna inbjuder till ett naturligt samspel eleverna och elev-lärare emellan, vilket handlar mycket om allmänna ting och händelser. Klimatet, som ofta är lärarövervakat och lugnt och tyst under de teoretiska lektionerna påverkar samspelet, som då utformas i första hand från det aktuella ämnet och med bänkkamraterna

  • 1125. Barbosa da Silva, António
    et al.
    Berggren, IngelaUniversity West, Department of Nursing, Health and Culture, Division of Nursing.Nunstedt, HåkanUniversity West, Department of Nursing, Health and Culture, Division of Nursing.
    Omvårdnadshandledning: ur etiskt och tvärdisciplinärt pers2009Collection (editor) (Other academic)
  • 1126.
    Bardhi, Butrint
    et al.
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Ranji, Alireza
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Regeringskrisen 2018: En fallstudie om Sverigedemokraterna och de etablerade riksdagspartiernas politiska strategier2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sedan valnatten den 9 september 2018 har ingen regeringskonstellation kunnat tillträda i Sverige. En jämn mandatfördelning mellan de traditionella blocken har resulterat i ett komplext parlamentariskt läge som utlöst en regeringskris.

    Ett riksdagsparti som tillhör ingetdera av de traditionella blocken är Sverigedemokraterna. Partiet är Sveriges yngsta riksdagsparti och utmanar de etablerade partierna (övriga riksdagspartier) med sin politiska sakfråga. För att få utökad politiskt inflytande ställer Sverigedemokraterna krav på att deras politiska sakfråga ska vinna gehör i den politiska arenan.

    Studien visar att de etablerade riksdagspartierna och Sverigedemokraterna möts i en strategisk maktkamp i regeringskrisen 2018. De etablerade partierna bemöter Sverigedemokraterna antingen genom att anta utmaningen i deras sakfråga och närma sig en snarlik politik, eller genom att inta en motsatt position till Sverigedemokraternas politiska sakfråga.

    Studien utgick ifrån ett fall med två kontexter. Kontexterna utgår ifrån en statsministeromröstning samt Sverigedemokraternas besked inför en budgetreservation.

  • 1127.
    Bardhi, Razije
    et al.
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Björling, Sonja
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Distriktsköterskors och diabetessköterskors erfarenheter av att möta patienter med diabetes som riskerar att få fotsår2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background:  Diabetes is one of the most common chronic diseases in the world and according to studies, the disease has a rapid development, especially type 2 diabetes that may be similar to an epidemic. Foot complications are among the most risky and costly late complications of diabetes mellitus. Neuropathy is the commonest complication and affects about half of all with diabetes. An important part of the preventive work of diabetes-related foot ulcers to provide both patient and family with knowledge, information and self-care education. Aim:  The aim of this study was to describe district nurse's and diabetic nurse's experience of meeting patients with diabetes who are at risk of foot ulcers Method:  The study had a qualitative approach. The study was based on individual interviews, with nine participants. Data analysis was then done using qualitative content analysis. Results:   The study resulted in four categories: conditions for a good start of a long-term relationship, different care depending on where the patient lives, the nurse as a mediator of knowledge and difficulties in preventive work. Conclusion:  This study shows that a large part of the preventive work is about self-care. It also appears that it is a challenge for nurses when patients do not want to take care of the advice and information they receive.

  • 1128.
    Bari, Mahdi
    University West, Department of Engineering Science, Division of Mechanical Engineering and Natural Sciences.
    A finite element study of shell and solid element performance in crash-box simulations2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis comprehends a series of nonlinear numerical studies with the finite element software's LS-Dyna and Impetus AFEA. The main focus lies on a comparative crash analysis of an aluminium beam profile which the company Sapa technology has used during their crash analysis.

    The aluminium profile has the characteristic of having different thickness over span ratios within the profile. This characteristic provided the opportunity to conduct a performance investigation of shell and solid elements with finite element analysis.

    Numerical comparisons were made between shell and solid elements where measurable parameters such as internal energy, simulation times, buckling patterns and material failures were compared to physical tests conducted prior to this thesis by Sapa technology.

    The performance investigation of shell and solid elements was initiated by creating models of the aluminium profile for general visualization and to facilitate the meshing of surfaces. The meshing procedure was considered to be an important factor of the analysis. The mesh quality and element orientations were carefully monitored in order to achieve acceptable results when the models were compared to physical tests.

    Preliminary simulations were further conducted in order to obtain a clear understanding of software parameters when performing crash simulations in LS-Dyna and Impetus AFEA. The investigated parameters were element formulations and material models. A general parameter understanding facilitated in the selection of parameters for actual simulations, where material failure and damage models were used.

    In conclusion, LS-Dyna was observed to provide a bigger internal energy absorption during the crushing of the beam with longer simulation times for solid elements when compared to shell elements. Impetus AFEA did on the other hand provide results close to physical test data with acceptable simulation times when compared to physical tests.

    The result difference obtained from the FE-software's in relation to physical crash experiments were considered to be varied but did indicate that shell elements were efficient enough for the specific profile during simulations with LS-Dyna. Impetus AFEA proved that the same time to be numerically efficient for energy approximations with solid elements refined with the third polynomial.

  • 1129.
    Baric, Velibor
    et al.
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Mugisha, Arthur
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Elkvalitetsmätningar vid Högskolan Väst och kartläggning av hur elkvalitetsutredningar hanteras vid elnätbolag2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today voltage quality is important in society, and with the constant continuing development of new modern technological products also makes people more demanding market and its products. This report describes the regulatory requirements on power quality and describe how a power quality works in practice. A clear written guidance on electrical connectivity have been performed in order to get clear instructions on how to connect today's instruments. Measurement has been conducted at University West for 24 hours using the school's equipment and with the help of an experienced supervisor. Furthermore, the report will include what affects the power quality and the consequences that may occur when there is poor power quality in the electricity grid. A distinction has been made on three network companies in Sweden of different size. The three network companies are Vattenfall AB, Göteborg Energi Nät AB and Trollhättan Energi AB. The survey has been done through interviews with officers and electrical engineers. The reason for this limitation is performed to find out if there are any established routines on how network companies handle customer complaints and unsatisfied customers. In addition, the report will describe the differences and similarities how these tree network company handled customer complaints. After interview with electricity suppliers can be concluded that there are few costumer complaints/cases per year from customer to the electricity supplier given how many customers it has. The result for measurement on voltage fluctuations, harmonics and flicker shows accordance with standards accepted values and it can be stated that University West has strong network.

  • 1130. Barick, P.
    et al.
    Prasad Saha, B.
    Mitra, R.
    Joshi, Shrikant V.
    Effect of concentration and molecular weight of polyethylenimine on zeta potential, isoelectric point of nanocrystalline silicon carbide in aqueous and ethanol medium2015In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 41, no 3, p. 4289-4293Article in journal (Refereed)
    Abstract [en]

    The effect of dispersant concentration and its molecular weight on zeta potential of nanocrystalline silicon carbide in an aqueous medium was investigated. An increase in the concentration of the dispersant, such as polyethylenimine (PEI), in slurry prepared from nanosized silicon carbide, was found to augment the iso-electric point and zeta potential. However, the zeta potential was observed to decline as the pH of the slurry shifts towards the basic region. This aforementioned behavior is attributed to the enhanced mutual repulsion between the polymer chains of the dispersant adsorbed on the surfaces of SiC particles and those approaching the surfaces. The higher ionization potential of polymers in the acidic region compared to the basic region increases the adsorption. The relationship between zeta potential and pH is however, noted to remain virtually unchanged with molecular weight of PEI. Further, it is observed that zeta potential of SiC decreases with the increase in solid content of the slurry. Rheology study reveals that the ethanol based slurry has a lower viscosity than the water based slurry, making ethanol the preferred dispersing medium for colloidal processing of nanometric SiC powder. © 2014 Elsevier Ltd and Techna Group S.r.l.

  • 1131.
    Barick, Prasenjit
    et al.
    International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad, 500005 Telangana, India.
    Chakravarty, Dibyendu
    International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad, 500005 Telangana, India.
    Saha, Bhaskar Prasad
    International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad, 500005 Telangana, India.
    Nitra, Rahul
    Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302 West Bengal, India.
    Joshi, Shrikant
    University West, Department of Engineering Science, Research Enviroment Production Technology West. International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad, 500005 Telangana, India.
    Effect of pressure and temperature on densification, microstructure and mechanical properties of spark plasma sintered silicon carbide processed with β-silicon carbide nanopowder and sintering additives2016In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 42, no 3, p. 3836-3848Article in journal (Refereed)
    Abstract [en]

    The effects of applied pressure and temperature during spark plasma sintering (SPS) of additive-containing nanocrystalline silicon carbide on its densification, microstructure, and mechanical properties have been investigated. Both relative density and grain size are found to increase with temperature. Furthermore, with increase in pressure at constant temperature, the relative density improves significantly, whereas the grain size decreases. Reasonably high relative density (~96%) is achieved on carrying out SPS at 1300 °C under applied pressure of 75 MPa for 5 min, with a maximum of ~97.7% at 1500 °C under 50 MPa for 5 min. TEM studies have shown the presence of an amorphous phase at grain boundaries and triple points, which confirms the formation of liquid phase during sintering and its significant contribution to densification of SiC at relatively lower temperatures (≤1400 °C). The relative density decreases on raising the SPS temperature beyond 1500 °C, probably due to pores caused by vaporization of the liquid phase. Whereas β-SiC is observed in the microstructures for SPS carried out at temperatures ≤1500 °C, α-SiC evolves and its volume fraction increases with further increase in SPS temperatures. Both hardness and Young׳s modulus increase with increase in relative density, whereas indentation fracture toughness appears to be higher in case of two-phase microstructure containing α and β-SiC.

  • 1132.
    Barick, Prasenjit
    et al.
    International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad-500005, Telangana, India.
    Saha, Bhaskar Prasad
    International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad-500005, Telangana, India.
    Joshi, Shrikant
    University West, Department of Engineering Science, Research Enviroment Production Technology West. International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur Post, Hyderabad-500005, Telangana, India.
    Mitra, Rahul
    Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
    Spray-freeze-dried nanosized silicon carbide containing granules: Properties, compaction behaviour and sintering2016In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 36, no 16, p. 3863-3877Article in journal (Refereed)
    Abstract [en]

    Spherical granules comprising silicon carbide nanoparticles have been produced with the help of sprayfreeze-drying (SFD) technique. The effect of solid loading of slurries on rheological properties, flowability and morphology of the resulting SFD granules has been studied. Further, a systematic study has been performed to investigate the effect of applied pressures and granule density on the relative densities and microstructures of the green compacts. A marginal increase in viscosity is noted as the solid content of slurries increases from 5 to 15 vol% with significant increase in viscosity being observed in case of 18 vol% slurry. The granules prepared from SiC slurries are spherical in shape with their mean size, density, gravimetric flow rate, and yield strength increasing with the increase in solid content. The mechanical properties of sintered SiC produced from SFD granules are found relatively superior to that made from commercially available spray-dried (SD) granules.

  • 1133.
    Barimani, Mia
    et al.
    Department of Women's and Children's Health, Division of Reproductive Health, Karolinska Institutet, Re tsius väg 13 A, SE:17177 Stockholm, Sweden.
    Forslund Frykedal, Karin
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages. Department of Behavioural Sciences and Learning, Linköping University, Sweden.
    Rosander, M.
    Department of Behavioural Sciences and Learning, Linköping University, Sweden.
    Berlin, A,
    Division of Nursing, Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institutet, Stockholm, Sweden.
    Childbirth and parenting preparation in antenatal classes2018In: Midwifery, ISSN 0266-6138, E-ISSN 1532-3099, Vol. 57, p. 1-7Article in journal (Refereed)
    Abstract [en]

    Objectives: to describe topics (1) presented by midwives' during antenatal classes and the amount of time spent on these topics and (2) raised and discussed by first-time parents and the amount of time spent on these topics. Design: qualitative; data were gathered using video or tape recordings and analysed using a three-pronged content analysis approach, i.e., conventional, summative, and directed analyses. Setting and participants: 3 antenatal courses in 2 antenatal units in a large Swedish city; 3 midwives; and 34 course participants. Findings: class content focused on childbirth preparation (67% of the entire antenatal course) and on parenting preparation (33%). Childbirth preparation facilitated parents' understanding of the childbirth process, birthing milieu, the partner's role, what could go wrong during delivery, and pain relief advantages and disadvantages. Parenting preparation enabled parents to (i) plan for those first moments with the newborn; (ii) care for/physically handle the infant; (iii) manage breastfeeding; (iv) manage the period at home immediately after childbirth; and (v) maintain their relationship. During the classes, parents expressed concerns about what could happened to newborns. Parents' questions to midwives and discussion topics among parents were evenly distributed between childbirth preparation (52%) and parenting preparation (48%). Key conclusions: childbirth preparation and pain relief consumed 67% of course time. Parents particularly reflected on child issues, relationship, sex, and anxiety. Female and male participants actively listened to the midwives, appeared receptive to complex issues, and needed more time to ask questions. Parents appreciated the classes yet needed to more information for managing various post-childbirth situations. Implications for practice: while midwifery services vary among hospitals, regions, and countries, midwives might equalise content focus, offer classes in the second trimester, provide more time for parents to talk to each other, allow time in the course plan for parents to bring up new topics, and investigate: (i) ways in which antenatal course development and planning can improve; (ii) measures for evaluating courses; (iii) facilitator training; and (iv) parent satisfaction surveys.

  • 1134.
    Barimani, Mia
    et al.
    Karolinska institutet.
    Wikström, Anna
    Karolinska institutet.
    Rosander, Michael
    Linköpings organisation.
    Forslund Frykedal, Karin
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Berlin, Anita
    Karolinska institutet.
    Facilitating and inhibiting factors in transition to parenthood: ways in which health professionals can support parents2017In: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 31, p. 537-546Article in journal (Refereed)
    Abstract [en]

    Background: The transition to parenthood is an overwhelming life event. From a theoretical perspective, tran- sition to parenthood is a developmental transition that contains certain phases and patterns.

    Aim: This study aim was twofold (i) discover, describe and comprehend transitional conditions that parents per- ceive as facilitating and inhibiting during transition to parenthood and to (ii) use that knowledge to develop recommendations for professional interventions that sup- port and facilitate transition to parenthood.

    Design: Meleis transition theory framed the study’s deduc- tive qualitative approach – from planning to analysis. Methods: In a secondary analysis, data were analysed (as per Meleis transition theory) from two studies that implemented interviews with 60 parents in Sweden between 2013 and 2014. Interview questions dealt with parents’ experiences of the transition to parenthood – in relation to experiences with parent-education groups, professional support and continuity after childbirth. Ethical issues: A university research ethics board has approved the research.

    Results: These factors facilitated transition to parenthood: perceiving parenthood as a normal part of life; enjoying the child’s growth; being prepared and having knowledge; experiencing social support; receiving professional support, receiving information about resources within the health care; participating in well-functioning parent-education groups; and hearing professionals comment on gender dif- ferences as being complementary. These factors inhibited transition to parenthood: having unrealistic expectations; feeling stress and loss of control; experiencing breastfeed- ing demands and lack of sleep; facing a judgmental attitude about breastfeeding; being unprepared for reality; lacking information about reality; lacking professional support and information; lacking healthcare resources; participating in parent-education groups that did not function optimally; and hearing professionals accentuate gender differences in a problematic way.

    Conclusion: Transition theory is appropriate for helping professionals understand and identify practices that might support parents during transition to parenthood. The study led to certain recommendations that are important for professionals to consider. 

  • 1135.
    Barkman, Henrik
    et al.
    University West, School of Business, Economics and IT, Division of Business Administration.
    Forsler, Elin
    University West, School of Business, Economics and IT, Division of Business Administration.
    Motives for voluntary sustainability reporting: A study of SMEs in Sweden and the U.K.2019Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The climate is rapidly changing due to an increasing amount of emitted carbon dioxide which will lead to problems for future generations to meet their needs in terms of resources. More and more organizations have started acknowledging that their activities affect the environment surrounding the organization. Multinational organizations are forced by law to present a sustainability report to declare their contribution to a more sustainable development. Small and medium-sized organizations (SMEs) do not need topublish a sustainability report by law, but an increasing number of SMEs publish a sustainability report voluntarily. Therefore, it is of interest to gain knowledge about what motives SMEs have to present a voluntary sustainability report. The purpose of this study was to gain knowledge about motives for voluntary sustainability reporting by SMEs in Sweden and the U.K. To gain knowledge about the subject, a quantitative approach was used. In order to limit the scope of this study, SMEs in Sweden and the U.K. was targeted to answer a web-based survey. The survey was based on the theoretical framework, which consisted of the triple bottom line, the legitimacy theory and the stakeholder theory. Based on the theoretical framework, four hypotheses were formulated. Hypothesis 1 was that organizations have more motives for presenting information about environmental sustainability. Hypothesis 2 was about motives for voluntary sustainability reporting and legitimacy. Hypothesis 3b was that organizations prioritize certain stakeholders' demands. Hypotheses 1, 2 and 3b were all confirmed by descriptive statistics and one sample t-tests. Hypothesis 3a was about motives for voluntary sustainability reporting and satisfying their stakeholders' demands. Hypothesis 3a could not be confirmed or rejected due to scattered results in the descriptive statistics and the one-sample t-test. Two major conclusions could be drawn from the conducted survey. The first conclusion was that organizations have more motives to sustainability report about the environment rather than about the social or economic aspects of sustainability. The second conclusion was that both gaining legitimacy and satisfying certain stakeholders' demands are motives for sustainability reporting for SMEs.

  • 1136.
    Barkman, Linnéa
    et al.
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Holmquist, Jacob
    University West, Department of Social and Behavioural Studies, Division for Educational Science and Languages.
    Läroplansanalys: Önskvärda lärarkompetenser2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Bakgrunden till uppsatsen uppkom då vi i klassen ofta diskuterade vilka kompetenser som lärare bör ha. Efter genomgång av litteratur och tidigare forskning kring vilka kompetenser som framhävs som positiva hos lärare ansåg vi att en analys av läroplanen i förhållande till den tidigare forskningen vore intressant. Vi kom fram till att en undersökning av vad som ses som positiva kompetenser för en lärare, utöver kunskaper inom de specifika ämnesområdena, känns relevant och aktuellt för oss som kommande grundskollärare. Medan kunskap inom detta insamlades ställde vi oss frågan; Hur väl överensstämmer egentligen den tidigare forskningen med vad som framkommer genom en analys av läroplanen? Frågan blev för oss intressant då läroplanen utgör grunden för vad undervisningen ska innehålla och inte minst hur undervisningen ska bedrivas. Därför ansåg vi att det är av intresse att analysera dess innehåll och undersöka hur önskvärda lärarkompetenser framkommer i läroplanens formuleringar för att tydliggöra uppdraget.

    Syfte: Syftet med uppsatsen är att genom en kvalitativ textanalys av Läroplan för grundskolan, förskoleklassen och fritidshemmet 2011 granska förekomsten av lärarkompetenser. Metod: I studien har en kvalitativ textanalys av läroplanens kapitel 1 och 2 genomförts.

    Resultat: Utifrån den kvalitativa textanalys som genomförts framkommer det två övergripande kompetenser och dessa kompetenser kan kopplas samman med bland annat kunskaper, färdigheter, egenskaper och attityder.

  • 1137.
    Barrvik, Erik
    et al.
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Hagman, Alma
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Undersökning av orsaker till komponenthaverier i uppsamlingsnätet till vindkraftparkerna Vettåsen och Mårtensklack2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis is to investigate why the cable terminations and power transformers in Wallenstam’s wind power plants, at Vettåsen and Mårkensklack, have broken down six times since December 2011, which was when they were first put into service.

    Power readings have been taken but there are no records for the times of the failures, which make it difficult to specify the failure source. However, from the readings that have been taken, there is nothing to indicate a cause for the failures. The transients are small and the proportions of harmonics are low. Since the instruments used to take the readings will only record up to 50th harmonics, a possible cause of failure could be high harmonics. Thunder storms, and cutovers in the power grid can probably be dismissed as sources of failure as well as manufacturing and installation faults.

    One proposal to remedy cable termination failures is to use geometric terminations which have been developed for grids with harmonics. Also, to reduce transients in the systems, surge arresters could be installed at the Vettåsen and Mårtensklack stations to ensure that the power quality can be monitored. The power readings need to be continued to specify the failure source

  • 1138.
    Bartha, Fredrika
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Balans mellan arbete och fritid – en möjlighet eller omöjlighet i dagens flexibla arbetsliv?: En kvalitativ studie om första linjens chefer och deras upplevelse av balans2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The balance between work and leisure is a controversial topic in today's working life. The imbalance between work and the rest of life is related to poorer well-being, wherein stress-related consequences can be included. Also, from an organizational perspective, imbalance causes negative consequences, in the form of lower productivity, reduced commitment and increased costs. Today, organizations are providing their employees various flexible solutions so they can increase autonomy in working life. This flexibility seems to reduce the conflict between work and leisure. However, research indicates that the workload can increase, especially if the flexibility is combined with objectives and result-driven tasks. The purpose of the study was to examine how first-line managers perceive the balance between work and leisure, and the conditions that are crucial to achieving balance. The study was conducted at a government agency in a county of Västra Götaland. The study is of qualitative character, and is based on semi-structured interviews with four managers of first line. Despite flexible working conditions there were additional factors that were experienced as critical for the individual's ability to maintain balance. One of the findings from the study was the importance of support from managers and colleagues when it comes to being able to define work. Without this support, it seems like the flexible work conditions are losing its effectiveness when it comes to achieving a balance between work and leisure. Therefore focus should be on actively communicating the organizational reasoning about health, wellbeing and workload. Additionally, this requires the establishment of guidelines that employees can relate to, be able to define work and to counter the factors that are contrary to established guidelines.

  • 1139.
    Basaran, Hülya
    University West, Department of Social and Behavioural Studies.
    "Ett herrans liv": en diskursanalytisk studie om skolavslutning i kyrkan2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Det finns skilda uppfattningar om var skolan skall ha skolavlutning inför sommarlovet. Kyrkan som plats för skolavslutning skapar debatt när anhängare och motståndare vill definiera vad skolavslutning i kyrkan är, bör vara och/eller kan innebära. Olika uppfattningar och tolkningar av skolans styrdokument har mynnat ut i att skolavslutning i kyrkan har diskuterats flitigt i media.  Bakgrunden, eller det så kallade forskningsproblemet uppstår just i oenigheten över skolavslutning i kyrkan. Åsiktsströmningar om skolavslutning i kyrkan öppnar upp för att undersöka vilka diskurser som finns i media. Syfte: Syftet med den här studien är att undersöka hur skolavslutning i kyrkan konstrueras och vilka diskurser som framträder i artiklar i dagstidningar. Metod: Studien innefattar analys av texter i utvald nyhetsmedia. Kritisk diskursanalys som specifik teori med ansats av socialkonstruktion. Resultat: Resultatet visar att det finns meningsskillnader i frågan där ställningstagandet producerar föreställningar och kategoriseringar av motståndarna. Skolavslutning i kyrkan konstrueras som ett problem som grundar sig i att samhället har blivit mångkulturellt. Sympatisörer till kyrklig skolavslutning konstruerar den som svensk, naturlig, fin och som en tradition och de personer som tillskrivs vilja ha skolavslutning i kyrkan konstrueras homogena, passiva och laglydiga. Skolavslutning i kyrkan framställs som hotad av ”byråkrater” och människor med annan religion. Byråkraterna konstrueras vara odemokratiska när de inte följer majoritetens vilja – att ha skolavslutning i kyrkan.  Byråkrater tillskrivs därtill driva ett projekt som stegvis kommer att urarva svenskheten. Skolavslutningen i kyrkan konstrueras vara hotad. Motståndare menar att skolavslutning exkluderar elever och att kyrkan som plats under tillställningen strider mot lagar. Mot -diskurserna är inte lika synliga som diskurserna som är för skolavslutning i kyrkan. Skolan beskrivs som ”en skola för alla” som inte skall indoktrinera någon religion eller bryta mot lagar. De rådande diskurserna påvisar den kamp som pågår att definiera vad skolavslutning i kyrkan är. Resultatet påvisar vilka som har tolkningsföreträde och hur personer inom diskurserna tillskrivs olika egenskaper och tillhöra andra grupper.

  • 1140.
    Basaran, Hüsnücan
    et al.
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    El Labaki, Jonathan
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Byggprojektledning: att strukturera upp projektledares tillvägagångssätt2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The bachelor's thesis of 15 credits was carried out in Vara municipality after the property manager stated a need. The task was to standardize the project managers' approach in terms of management and structure, and to improve the possibility of new recruitments and takeovers of existing projects. With the help of interviews, it was identified that the project managers worked in different ways without tools to support structuring and managing their projects.

    In order to be able to answer how the problem image could be sorted out, the writers designed a content for a manual that the project managers could use. By following the contents of the manual, the project managers are expected to be able to more easily manage and structure their projects. As a result of a standardized work method, new recruitments and takeover of projects are also expected to be simplified.

    The introductory chapter of the bachelor's thesis describes how the background to the work looked, as well as the purpose, goal and delimitation.

    The second chapter describes the writers' method for designing the work that followed a scientific starting point.

    The third chapter consists of the writers' theory sections that were needed to create an understanding of how the actual construction process and the project management process could look. This chapter was used as a knowledge base to be able to make decisions about the contents of the manual.

    With the help of interviews and meetings at the municipality, a current situation analysis was formed, which is presented in chapter four. The current situation analysis was used as a basis for designing the contents of the manual.

    In the fifth chapter, the contents of the manual are described using a presented result as well as discussion and analysis of why the content was necessary for the project managers to follow.

    Finally, in the sixth chapter, a conclusion is drawn about how the purpose of the degree project should be fulfilled and a future recommendation for continued work in the subject area.

  • 1141.
    Basinska, Beata A.
    et al.
    Gdansk University of Technology, Faculty of Management and Economics, Poland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Psychology and organization studies. University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Be fearless : Positive affect as a mediator between venturesomeness and self-efficacy in future entrepreneurs and managers: Être intrépide : affect positif agissant comme médiateur entre l’audace et la connaissance de ses propres capacités chez les futurs entrepreneurs et managers2018In: Revue Européenne de Psychologie Appliquée / European Review of Applied Psychology, ISSN 1162-9088, Vol. 68, no 4-5, p. 171-180Article in journal (Refereed)
    Abstract [en]

    Introduction and objectives. – Self-efficacy, personality and different affect states in entrepreneurs and managers are important factors for effectiveness and well-being. The aim of the study was to examine in young adults during entrepreneurship-related education, the relationships between venturesomeness and self-efficacy, and the mediating effects of positive affect and positive emotions (joviality, self-assurance, attentiveness) on these relationships.

    Method. – One hundred and fifty-three participants (mean age 22 years) completed questionnaires that assessed venturesomeness, general self-efficacy, positive affect (measured as a state), and positive emotions. Bootstrapping analyses with simple and multiple mediators were conducted, controlled for gender, to estimate the indirect effects of positive affect and positive emotions on venturesomeness and general self-efficacy.

    Results. – Venturesomeness was significantly correlated with self-efficacy. Positive affect (model 1), joviality and self-assurance, but not attentiveness (model 2), were complete mediators in the relationship between venturesomeness and self-efficacy.

    Conclusion. – The present study provides new evidence that heightened venturesomeness is related to higher levels of positive affect, self-assurance and joviality. Venturesomeness, therefore, may strengthen self-efficacy in young people during entrepreneurship-related education, and positive emotions may lead to an aware use of resources, including self-efficacy. These results may stimulate young people to be braveand to try new experiences.

  • 1142.
    Basinska, Beata A.
    et al.
    Gdansk University of Technology, Faculty of Management and Economics, Poland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Pozytywny afekt a relacja między śmiałością, impulsywnością i własną skutecznością [Positive affectivity and the relationship between venturesomeness, impulsiveness and self-efficacy]2012In: Zdrowie w cyklu zycia czlowieka [Health across the life span] / [ed] Oginska-Bulik, Nina & Miniszewska, Joanna, Lodz: Wydawnictwo Uniwersytetu Lodzkiego, 2012, 1., p. 109-125Chapter in book (Refereed)
    Abstract [en]

    Background: Recent research has demonstrated a relationship between personality, affectivity and performance. The purpose of this study was to examine the mediating effect of basic and general positive affectivity on personality traits (venturesomeness and impulsiveness) and self-efficacy. Methods: The correlational design was used. 175 students filled in the Impulsiveness – Venturesomeness - Empathy Inventory (Eysenck et al., 1985), PANAS (Watson, Clark, 1994 - basic and general positive affectivity) and General Self-Efficacy (GESE by Schwarzer et al., 2008). Findings: Impulsiveness did not matter to the strength of self-efficacy, and was independent of positive affectivity. The results obtained indicated a significant mediating effect of basic positive affectivity, self-assurance and joviality, on the link between venturesomeness and general self-efficacy, and a direct impact of general positive affectivity on self-efficacy.

  • 1143.
    Basinska, Beata A.
    et al.
    Gdansk University of Technology, Faculty of Management and Economics, Poland.
    Wiciak, Izabela
    Police Academy, Szczytno, Poland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Burnout among a group of policemen: the role of fatigue and emotions in the work context2012In: Book of Proceedings: Proceedings of the 10th European Academy of Occupational Health Psychology Conference / [ed] Jain, Aditya, Hollis, David, Andreou, Nicholas, Wehrle, Flavia, Nottingham: I-WHO, International House, Jubilee Campus , 2012, p. 125-126Conference paper (Refereed)
    Abstract [en]

    Background: Policework is a profession with a high risk of operational and organizational stress at work. The aim of this research was to investigate the effect of job-related affectivity and fatigue on burnout; specifically we aimed to study the relation between acute fatigue and burnout and the indirect role of emotion during work.

    We adopted the concept of burnout with two components: exhaustion and disengagement (Halbesleben & Demerouti, 2005). In this concept, exhaustion is related to the energetic aspect, and disengagement is connected to the motivational aspect. We hypothesized that acute fatigue is a precursor to burnout. According to Van Katwyk et al. (2000), psychological well-being is synonymous with work-related affectivity, and emotions are classified into four categories: high and low-arousal of pleasant emotions and high and low-arousal of unpleasant emotions. According to the theory of stress by Selye (1978), eustress and distress are assumed to be a high arousal of emotion.

    Methods: Acute fatigue was measured by the index in accordance with the Japan Society for Occupational Health. In order to investigate exhaustion and disengagement the Oldenburg Burnout Inventory was used (Halbesleben & Demerouti, 2005). Job-related affective well-being was used to assess emotions within the work context (Van Katwyk et al., 2000). Hierarchical regressions analyses were performed.

    Group: 187 policemen (28 women) filled in the questionnaires. Half of them worked in the prevention department and one-third were on duty in the criminal division. Their average work experience was 14.7 years (range 5 - 28).

    Results: Fatigue had a direct impact on exhaustion and disengagement. This first effect was 3 times stronger than the second. In the next step the emotions were entered into these separate models. We observed that a low arousal of unpleasant emotions had an indirect relation with fatigue and exhaustion. Additionally, a high arousal of positive and negative emotions (eustress and distress) mediated between fatigue and disengagement. These effects of partial mediation were large (f2 = .34 and f2 = .32 respectively).

    Conclusion: Our results indicate that a high arousal of emotions can lead to a deterioration of motivation of work, but a low arousal of negative emotions reduce energetic ability to work among policemen.

     

     

  • 1144.
    Basinska, Beata A.
    et al.
    Gdansk University of Technology, Faculty of Management and Economics, Poland.
    Wiciak, Izabela
    Police Acad Szczytno, Dept Adm, SzczytnoPoland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Fatigue and burnout in police officers: the mediating role of emotions2014In: Policing: an international Journal of Police Strategies and Managment, ISSN 1363-951X, E-ISSN 1758-695X, Vol. 37, no 3, p. 665-680Article in journal (Refereed)
    Abstract [en]

    Purpose – The policing profession is associated with psychosocial hazard. Fatigue and burnout often affect police officers, and may impair the functioning of the organization and public safety. The relationship between fatigue and burnout may be modified by job-related emotions. While negative emotions have been extensively studied, the role of positive emotions at work is relatively less known. Additionally, there is insufficient knowledge about the role of the intensity of emotions. The purpose of this paper is to examine the role of job-related emotions in the relationship between fatigue and burnout in police officers.

    Design/methodology/approach – In all, 169 police officers (26 women) completed a test battery that assessed acute fatigue, burnout (Oldenburg Burnout Inventory: exhaustion and disengagement), and emotions (Job-related Affective Well-being Scale).

    Findings – Acute fatigue was associated more strongly with exhaustion than with disengagement. Low-arousal negative emotions partially mediated the relationship between fatigue and exhaustion. High-arousal positive and negative emotions were partial mediators between fatigue and disengagement experienced by police officers.

    Research limitations/implications – The results show that high-arousal emotions were associated with changes in work motivation, while low-arousal negative emotions reduced energetic ability to work.

    Originality/value – This paper enhances understanding of burnout among police officers and the mediating role of emotions. The patterns of the relationships between fatigue, burnout and emotions are discussed in the context of the conservation of resources theory and the tripartite model of anxiety and depression.

  • 1145.
    Basinska, Beata A.
    et al.
    Gdansk University of Technology, Faculty of Management and Economics, Poland.
    Wiciak, Izabela
    Police Academy in Szczytno, Poland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.
    Fatigue, vigor and dedication: the role of job-related emotions2013In: Imagine the future world: How do we want to work tomorrow? / [ed] Hertel, Guido & Holling, Heinz, 2013, p. 11-11Conference paper (Refereed)
    Abstract [en]

    Purpose. The aim of the study was to examine the role of job-related positive and negative emotions between acute fatigue at work and engagement. We tested two components of engagement: vigor (energetic aspect) and dedication (motivational aspect). We hypothesized that negative emotions mediate in energy depletion process and positive emotions mediate in broadening of energetic and motivational resources.

    Design/Methodology. Fatigue was measured by an index in accordance with the Japan Society for Occupational Health. The Utrecht Work Engagement Scale – short version (UWES) was used to evaluate vigor and dedication (Schaufeli, Bakker, & Salanova, 2006). Job-related affective well-being (JAWS) was used to assess positive and negative emotions (Van Katwyk et al., 2000). The study group consisted of 174 police officers (the average tenure of 10 years, range 1–23).

    Results. Baron and Kenny approach and the Sobel test supported our hypotheses. Fatigue was more negative related to vigor than dedication. We observed that positive and negative emotions fully mediated between fatigue and vigor (large effect size f2 = .36). Additionally, positive emotions fully mediated between fatigue and dedication (medium effect size f2 = .16). We confirmed these results by the Sobel test.

    Limitations. The correlational design was applied.

    Research/Practical Implications. Our results indicate that in police officers positive emotions may lead to broadening of energetic and motivational resources.

  • 1146.
    Basińska, Beata A.
    et al.
    Gdansk University of Technology, Poland.
    Dåderman, Anna Maria
    University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology.
    Work Values of Police Officers and their Relationship with Job Burnout and Work Engagement2019In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 10, article id 442Article in journal (Refereed)
    Abstract [en]

    Values represent people’s highest priorities and are cognitive representations of basic motivations. Work values determine what is important for employees in their work and what they want to achieve in their work. Past research shows that levels of both aspects of job-related well-being, job burnout and work engagement, are related to work values. The policing profession is associated with high engagement and a risk of burnout. There is a gap in the literature regarding the hierarchy of work values in police officers, how work values are associated with job burnout and work engagement in this group, and whether work values in police officers are sensitive to different levels of job burnout and work engagement. Therefore, the aim of our study was to examine the relationships between work values and job burnout and work engagement, in a group of experienced police officers. We investigated: (a) the hierarchy of work values based on Super’s theory of career development, (b) relationships between work values and burnout and work engagement, and (c) differences between the work values in four groups (burned-out, strained, engaged, and relaxed). A group of 234 Polish police officers completed the Work Values Inventory (WVI) modeled upon Super’s theory, the Oldenburg Burnout Inventory and the Utrecht Work Engagement Scale. The results show that police officers gave the highest priority to extrinsic work values. Job burnout was negatively correlated with the cognitive intrinsic work values (Creativity, Challenge, and Variety), while work engagement was positively correlated with the largest group of intrinsic work values (Creativity, Challenge, Variety, Altruism, and Achievement), as well as with the extrinsic work values (Prestige and Co-workers). The police officers showed significant differences, between levels of job burnout and work engagement, for intrinsic work values such as Variety, Challenge, and Creativity (large effects), and for Altruism and Prestige (moderate effects). The findings are discussed within the context of the Conservation of Resources theory, which explains how people invest and protect their personal resources, and how this is connected with preferred work values. We conclude that intrinsic work values are sensitive to different levels of burnout and engagement.

  • 1147.
    Bassem Yehia, Khaled
    et al.
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Abdowod,, Vahab
    University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
    Analys av indikatorerna AIT, AIF, SAIDI och SAIFI i lokalnätet2019Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Swedish Energy Markets Inspectorate (EI) is a regulatory authority for electricity, district heating and natural gas, where one of their tasks is to control the company's power distribution quality. A good electrical delivery reliability is determined on the basis of EI:s regulations and general advice in the publication EIFS 2013:1.

    Every year, the power distribution companies reports data to EI of the disturbances they have had in their networks, which is used to measure and analyse the electrical delivery reliability in the Swedish electricity grid. EI uses established indicators that describe the electrical delivery reliability of the distribution networks in Sweden. The indicators used today are named SAIDI and SAIFI, which are customer-weighted indices that describe the average interruption duration and the average interruption frequency for a specific network.

    In the beginning of 2019, EI will consider introducing two indicators to replace the current SAIDI and SAIFI indices, the indicators are being defined as AIT and AIF. According to EI, these indicators will be better than SAIDI and SAIFI as they take into consideration the customer's expected power consumption during the power outage.

    The purpose of this report is to investigate how the new indicators AIT and AIF affects the delivery reliability indicators in GENAB:s network, where these indicators are exercised on different types of networks and then compared. How the network can be made more efficient in the future by means of automation in the network is investigated based on the results on the indicators.

    From the results and investigations, it can be concluded that the transition to AIT and AIF will result in an increase of the indicator´s interruption time and the number of interruptions for customers per year in GENAB:s network.

  • 1148. Basu, A.
    et al.
    Chakraborty, J.
    Shariff, S. M.
    Padmanabham, G.
    Joshi, S. V.
    Sundararajan, G.
    Dutta Majumdar, J.
    Manna, I.
    Laser surface hardening of austempered (bainitic) ball bearing steel2007In: Scripta Materialia, Vol. 56, no 10, p. 887-890Article in journal (Refereed)
    Abstract [en]

    This study concerns laser surface hardening (LSH) of austempered SAE 52100 steel to enhance hardness and wear resistance. Following LSH with selected laser parameters, surface microstructure and mechanical properties were evaluated by optical/scanning electron microscopy, X-ray diffraction, hardness measurement and wear studies, and thermal profile modeling. The results suggest that LSH could develop residual compressive stress and high hardness and wear resistance in this steel without affecting the bainitic core. © 2007 Acta Materialia Inc.

  • 1149.
    Battabyal, Manjusha
    et al.
    Chalmers University of Technology.
    Klement, Uta
    Chalmers University of Technology.
    Norell, Mats
    Chalmers University of Technology.
    Goutier, Simon
    University of Limoges.
    Markocsan, Nicolaie
    University West, Department of Engineering Science, Division of Production Engineering.
    Comparison of microstructure in Ni-Al single splats and millimeter sized droplets2011In: Surface Modification Technologies XXV : Proceedings of the Twenty Fith International Conference on Surface Modification Technologies - SMT25: Trolhättan June 20-22, 2011, 2011, p. 3-12Conference paper (Refereed)
  • 1150.
    Batungwanayo, Guillaume
    University West, Department of Engineering Science, Division of Automation Systems.
    Weld bead tracking by use of an infra-red vision system2014Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A survey of robotized seam-tracking techniques was conducted in preparation for a project consisting of using an infrared camera on a robot for on one side collect continuous weld images for NDT inspection and on the other one track the weld joint. The tracking system can be used to discover the position of the weld bead without previous information. The robust system is outlined, along with its merits and disadvantages.

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