hig.sePublications
Change search
Refine search result
374375376377378379380 18801 - 18850 of 19246
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 18801.
    Zolotareva, Julia
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Gromova, Valentina
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Revisorns anmälningsplikt: Har anmälningsplikt påverkat klientrelationer?2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The purpose of this study is to create understanding for the law on notification and how the law on the notification has affected the relationship between the auditor and client. A further purpose is to investigate whether auditors inform their clients about the law on notification today.

    Method: The qualitative method has been implemented in this study in the form of interviews. Interviews took place in Gävleborg region with eight authorized auditors and three business managers.

    Conclusions: The current study have shown that the auditors do not inform their clients about the law on the notification even today. The law on the notification has not affected the relationship between auditor and client. According to the approached auditors, the relationship can deteriorate only with the clients that have an unserious attitude. The business managers also believe that the relationship with the auditor hasn’t been affected because of the law on the notification. The study has shown, however, that the law on the notification is being applied differently depending on the size of the company and type of relationship between the parties.

    The study's contribution: This thesis contribute to clarify if the law on the notification has affected the relationship between auditor and client. The study'sresults contribute to business research by creating understanding about the law on the notification's impact on the relationship, which states the resultthat the relationship has not changed. Furthermore, we notice in the study that the size of the company determines what kind of relationship existsbetween the parties, which in turn may affect the auditor's independence.

    Suggestions for further research: There are not many studies that discuss the law on the notification's impact on the relationship between auditor and client from both the auditors and client perspective. It would therefore be interesting to continue on this study, but with a quantitative method. This will make it possible to reach more respondents and to make the study results more generalizable.

  • 18802.
    Zou, Fan
    University of Gävle, Department of Technology and Built Environment.
    Energy Saving Curtain: ENERGY INVENTORY AND CONSERVATION POSSIBILITIES2008Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesis
    Abstract [en]

    This paper presents the energy saving curtains, in order to make the

    consumers be more aware of the energy efficiency of the energy saving

    curtains, the paper gave related analysis and conclusions.

    The work was performed by using the Parasol Program, developed by Lunds University, Sweden. The Program is used for quantifying the influence of window size, glass type, textile type, wall thermal insulation and sun shading on annual energy use and indoor thermal comfort. The results which are obtained from the calculations are applicable to similar climatic and environment conditions. Calculations were performed to investigate the potential for using sunshade devices to reduce annual energy demand for cooling and heating. Different materials and dimensions of the energy saving

    curtain are used as variables in the analysis. The results indicated that for the current climatic conditions and other related factors, the total reduction rate of the annual energy consumption of office used buildings in Stockholm is estimated generally 20% -30% lower comparing to those buildings without energy saving curtain system. That means at least 20% of energy cost can be saved by the energy saving curtain system.

  • 18803.
    Zou, Rucong
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Sun, Hong
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Building Extraction in 2D Imagery Using Hough Transform2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this paper is to find out whether Hough transform if it is helpful to building extraction or not. This paper is written with the intention to come up with a building extraction algorithm that captures building areas in images as accurately as possible and eliminates background interference information, allowing the extracted contour area to be slightly larger than the building area itself. The core algorithm in this paper is based on the linear feature of the building edge and it removes interference information from the background. Through the test with ZuBuD database in Matlab, we can detect images successfully.  So according to this study, the Hough transform works for extracting building in 2D images.

  • 18804.
    Zuber-Namér, Marilis
    University of Gävle, Faculty of Health and Occupational Studies.
    Platsrelaterat själv och autobiografiska minnnen hos svenskar boende i Schweiz2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 18805.
    Zumaeta, Eduardo
    University of Gävle, Department of Mathematics, Natural and Computer Sciences.
    Dokumentation för programförändring Carta2007Student paper second term, 10 points / 15 hpStudent thesis
    Abstract [sv]

    Carta är ett datasystem som är skapat av SMS Meer, Tyskland och som används av Rörverk 6 på Ovako i Hofors vid rörtillverknings processen. Systemet är placerat i ett Reducerverk, som man använder till processreglering, för processtyrning av Streckreducerverket, och som processadministration med en Central database för att sköta kommunikation mellan olika datasystem anknutna till Rörverk 6, och som planeringsverktyg för att få fram samtliga data för rörtillverknings processen.

  • 18806.
    ZUO, Tianchi
    et al.
    University of Gävle, Department of Technology and Built Environment.
    LI, Ying
    University of Gävle, Department of Technology and Built Environment.
     Environment-oriented Logistics System Design2009Independent thesis Advanced level (degree of Master (One Year)), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Environmental issues have been highly in focus for several years. With the development of EMS, many companies get environmental improvements through implementing EMS. Also, "green logistics" turns out to be a popular issue. But the combination of environment issues and logistics system is rarely found in the previous researches. Therefore, environment-oriented logistics system design becomes the topic described here.

    The purpose of the thesis is to see potential of integrating environment issues into logistic system by literature review and case study. With the help of our supervisors, two Swedish companies Sandvik SMT and FLB Logistik become case companies in the thesis. The analysis is based on literature review about logistics and environment, the information from both companies‟ websites as well as face-to-face interviews.

    In analysis part, how logistics systems and environmental issues interact with each other is illustrated firstly. A proposed model based on logistics system decision-making model is shown. SWOT analysis is used to explain the outcomes and challenges of implementing EMS in Sandvik SMT. At last, the conditions such as customer environmental requirement and the cost for using EMS are briefly described.

    Based on the research, further study should begin with the collection of quantitative data about environmental performance from manufacturing companies, suppliers, as well as retailers. More recommendations are given in the conclusion part.

  • 18807.
    Zutautas, Vaidutis
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management, Land management, GIS.
    Charcoal Kiln Detection from LiDAR-derived Digital Elevation Models Combining Morphometric Classification and Image Processing Techniques2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper describes a unique method for the semi-automatic detection of historic charcoal production sites in LiDAR-derived digital elevation models. Intensified iron production in the early 17th century has remarkably influenced ways of how the land in Sweden was managed. Today, the abundance of charcoal kilns embedded in the landscape survives as cultural heritage monuments that testify about the scale forest management for charcoal production has contributed to the uprising iron manufacturing industry. An arbitrary selected study area (54 km2) south west of Gävle city served as an ideal testing ground, which is known to consist of already registered as well as unsurveyed charcoal kiln sites. The proposed approach encompasses combined morphometric classification methods being subjected to analytical image processing, where an image that represents refined terrain morphology was segmented and further followed by Hough Circle transfer function applied in seeking to detect circular shapes that represent charcoal kilns. Sites that have been identified manually and using the proposed method were only verified within an additionally established smaller validation area (6 km2). The resulting outcome accuracy was measured by calculating harmonic mean of precision and recall (F1-Score). Along with indication of previously undiscovered site locations, the proposed method showed relatively high score in recognising already registered sites after post-processing filtering. In spite of required continual fine-tuning, the described method can considerably facilitate mapping and overall management of cultural resources.

  • 18808.
    Zäll, Mikael
    University of Gävle, Department of Mathematics, Natural and Computer Sciences.
    Ökade anpassningsmöjligheter med scriptspråk2006Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Att implementera scriptmotorer i Windows-applikationer öppnar upp många intressanta möjligheter, varav en av dessa är att göra kundanpassningar till ett system utan att kompilera om källkoden. Några problemställningar som skall utvärderas är hur det kan implementeras en scriptmotor till ett affärssystem och vad finns det för färdiga scriptmotorer och scriptspråk som kan användas, och hur det på ett lämpligt sätt kan skapas anropspunkter till script så som händelser, knappar och menypunkter. I denna uppsats ges ett förslag på en möjlighet att anpassa ett affärssystem under dess exekvering genom att integrera en scriptmotor till systemet. Denna teknik kommer att tillåta olika kunder att själva anpassa ett system efter deras egna behov, men dock inom ett visst ramverk. Syftet med detta är att öppna upp möjligheten att skapa egna anpassningar av systemet på ett snabbt och ekonomiskt tillvägagångssätt.

  • 18809.
    Ädel, Eva
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Löfmark, Anna
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Pålsson, Ylva
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Mårtensson, Gunilla
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Engström, Maria
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Lindberg, Magnus
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    The interaction of peers: promotive and hindering aspects for learning and well-being using peer-learning during clinical education2017In: Article in journal (Other academic)
  • 18810.
    Ädel, Johan
    University of Gävle, Department of Mathematics, Natural and Computer Sciences.
    Kopplingar till vardagsfenomen i fysikläromedel2008Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 18811.
    Ädling, Anna
    University of Gävle, Department of Technology and Built Environment.
    Timmerhusets historia och framtid: En studie av timmerhusets energianvändning2008Student paper second term, 10 points / 15 hpStudent thesis
    Abstract [en]

    In a time where our environmental awareness and our use of energy gets more and more attention, grows the demand requirements on all the materials that we use. An area where the focus on etc the energy consumption has increased is the construction industry. With EU´s directive 2002/91/EG the demand energy efficient requirements gets even higher. Even the timberhouse that has traditions for over a 1000 years has to make the demand requirements that we have in the 21-century. Boverket has on the basis of the directive

    established new demands that say that houses located in the northern climate zone gets to have a maximum energy consumption of 130 kWh/year and 110 kWh/year in the southern climate zone.

    Only the 8” timberhouse located in the southern climate zone made the demand requirements on 110 kWh/year.

    The report analyses five different energy saving alternatives;

    • Use of rougher timber

    • Externally addition isolation

    • Internally addition isolation

    • Internally addition isolation of the northern wall and only on thoose walls where the timberwall neverhteless is gonna be visible:

    - Bathroom

    - Kitchen

    • Doubble timberwall with isolation inbetween

  • 18812.
    Äijö, Annika
    University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences.
    Hälsosammare snabbmat – upplevda möjligheter och problem bland restauranger: En intervjuundersökning ur snabbmatsrestaurangers perspektiv2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Over the past 30 years the incidence of overweight and obesity has increased. Obesity is a risk factor for many diseases, for instance type 2 Diabetes, cardiovascular diseases, many types of cancer and musculoskeletal diseases. That ready available food today is so accessible can be a reason for the public health problems of overweight and obesity.

    Objective: The aim was to study what possibilities and barriers there are for fast-food restaurants to sell healthy food.

    Methods: Information was collected by seven telephone interviews and two respondents answered by e-mail. Nine persons that were in charge of the menu at different fast-food restaurant chains in Sweden participated in the study.

    Results: To have a large variety was considered to be a problem for selling healthy food, also because the sale of it was low in some of the fast-food chains. Some of the informants did not find any problems with selling healthy food and it was regarded as an opportunity to get more consumers.

    Conclusion: The demand for healthier food has increased, and the offer and sales of it has also escalated. Nevertheless traditional fast food is selling well and that is why most restaurants focus on that range of food rather than offering their costumers healthier options in their menu.

  • 18813.
    Älander, Eva
    University of Gävle, Faculty of Education and Business Studies, Department of Culture Studies, Religious Studies and Educational Sciences.
    De nationella proven i svenska - hur påverkar de undervisningen i årskurs 9?2011Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Älander, Eva (2011): De nationella proven i svenska – hur påverkar de undervisningen i årskurs 9? Examensarbete i didaktik. Lärarprogrammet. Akademin för utbildning och ekonomi. Högskolan i Gävle.

     

    Sammanfattning

    Detta är en studie om det nationella provet i svenska för årskurs 9. Arbetets syfte har varit att undersöka hur några lärare uppfattar att de nationella proven påverkar de prioriteringar som de gör runt ämnets innehåll. Med andra ord: hur de nationella proven påverkar undervisningen i svenska i årskurs 9. Leder proven till att den dagliga undervisningen fokuserar vissa mål på bekostnad av andra mål? Eller är det snarare så att provens existens hjälper till att ställa kursplanens innehåll i fokus på ett sätt som gynnar elevernas måluppfyllelse?

    Undersökningen genomfördes i form av semi-strukturerade intervjuer med fem stycken lärare som i dagsläget undervisar i svenska. Dessa lärare har varit involverade i genomförande och bedömning av nationella prov mellan två och femton gånger. Den intervjuguide som användes berörde två stycken teman; de nationella proven samt kursplanen i svenska och dess skrivningar om ämnets centrala innehåll i årskurs 7-9.

    Årligen genomför cirka 100 000 elever de tre delprov som ingår i det nationella provet i svenska för årskurs 9. Trots att proven inte mäter alla kursplanens mål är de mycket viktiga redskap för lärarnas bedömning och betygssättning. Lärarna i denna studie ser provresultaten som ett mått på (och garant för) sin egen bedömningsnivå, att de hamnat rätt i sin helhetsbedömning av elevens måluppfyllelse.

    Under en längre tid har det konstateras relativt stora avvikelser mellan elevernas provbetyg och deras samlade terminsbetyg. En sådan avvikelse behöver inte alltid vara ett problem, men den kan också visa på att lärares bedömning inte är likvärdig över landet. Problematiken blir extra tydlig när långa texter ska bedömas och bedömningsanvisningarna lämnar stort tolkningsutrymme till den enskilde läraren. Ett arbetssätt som rekommenderas för att råda bot på likvärdighetsproblematiken är sambedömning. Sambedömning problematiseras i denna studies resultat utifrån risken för att skolkulturer skapas samt de tendenser till skillnader i villkor som anas mellan lärare på kommunala respektive fristående skolor.

    Det blir tydligt i denna studies resultat att det nationella provet påverkar undervisningen i relativt stor utsträckning, inte minst genom de grundliga förberedelser som genomförs inför provet. Detta väcker frågor om var gränsen går mellan att ge eleverna så goda förutsättningar som möjligt och att förbereda dem så pass mycket att provresultatet inte säger något om elevens kunskaper utan snarare är en produkt utav en längre tids strategiska förberedelser?

    Nyckelord: bedömning, kursplan, lektionsinnehåll, måluppfyllelse, nationella prov, svenska, årskurs 9

    Keywords: assessment, course syllabi, goal attainment, lesson planning, national tests, Swedish, year 9

  • 18814.
    Älvebrink, Johan
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Konceptutveckling av artikelpaletter för effektivare rengöring av detaljer2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Atlas Copco in Tierp focus its production on hand-held tools, fixtured tools and assembly systems. Examples of tools that the company produces are wrenches, screwdrivers, grinders and drills. The production unit in Tierp is the largest production unit in the Industrial Technique business area. The company manufactures articles in many sizes and shapes. The articles are stored and transported in workshop palettes (load carriers). In order to ensure quality standards the articles are cleaned every so often in large industrial washing machines.The rinsing process is not efficient enough when cleaning the company's smaller articles. Palettes which articles are placed in contributes greatly to the lack of efficiency. To get the articles completely clean rinsing must sometimes be done twice.The goal was to develop a new palette concept that enable increased cleanliness after rinsing.Through trial and error method several alternative concepts have been developed and the best selected using Pugh matrix.The selected concept significantly increases the water flow and detail capacity compared to the original palette, but manufacturing costs are estimated to increase.Depending on the manufacturing method selected for making the new palettes, construction design can part. If the palettes are made through 3D-printing it may be advantageous to reduce the height (possibly remove the support pillars) and the mass of the palette to lessen manufacturing costs, while too complex design can increase the cost of machining.I recommended a prototype of the palette too be tested in production to reliably evaluate its properties and quality.

  • 18815.
    Ämting, Alveola
    University of Gävle, Faculty of Education and Business Studies, Department of Culture Studies, Religious Studies and Educational Sciences.
    "Det ska vara från ens egna känslor och inte från någon annans": Elevers uppfattningar om eget skapande2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med den här uppsatsen var att undersöka hur elever definierar ”eget skapande”, vilket är en term som används i läroplanen för de obligatoriska skolformerna och i kursplanen i bild. Jag har också undersökt om elever på högstadiet håller på med något eget skapande på fritiden och om de tycker att det finns tillräckligt med tid för eget skapande på bilden i skolan.Studien består dels av en enkätundersökning där 84 elever på högstadiet har svarat och dels av intervjuer med fyra av eleverna. Resultatet visar att dessa elever har olika uppfattning om vad som är eget skapande. En stor del av eleverna har använt sig av ordet ”själv” i sina definitioner, antingen i bemärkelsen att man arbetar själv under bildskapandet eller i den mening att man själv kommer på vad som ska skapas. En annan uppfattning som är vanlig bland eleverna är att eget skapande innebär att skapa fritt eller att få göra vad man vill.En stor del av eleverna tycker att det fattas tid till eget skapande på bilden i skolan, men nästan lika många elever tycker att det finns tillräckligt med tid. Många har också svarat att de inte vet.Något som undersökningen också visar är att nästan hälften av eleverna ägnar sig åt någon typ av eget skapande på fritiden. Deras svar visar att eget skapande kan innebära mer än vad som traditionellt behandlas i bildundervisningen. Eleverna inte bara ritar och målar utan fotograferar och redigerar, målar graffiti, skapar musik och webbdesign. De bygger snögubbar, LEGO och EPA. De pysslar och lagar trasiga saker. Allt detta kan enligt eleverna själva vara eget skapande.

  • 18816.
    Ängalid, Filip
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Utredning av behovsstyrd ventilation: En jämförelse mellan CAV och VAV2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport är ett examensarbete på C-nivå som görs i sammarbete med teknikkonsulten Ramböll. Det vanligaste sättet att ventilera en byggnad idag är med så kallad CAV-ventilation (Constant Air Volume). Denna metod bygger på att ett luftflöde bestäms för rummet och upprätthålls med konstant flöde. En annan metod är så kallad VAV (Variable Air Volume) som bygger på att flödet varierar efter behovet. Anledningen till varför man väljer VAV istället för CAV är att med CAV finns det ofta en stor risk att man överventilerar ett rum eller byggnad, just på grund av att flödet är konstant. Problemet med VAV är att det är en högre investeringskostnad än för CAV så metoden lämpar sig bara där energibesparingen är så stor så den täcker mellanskillnaden i pris. Denna utredning visar i vilka typer av rum som det kan löna sig att installera VAV istället för det traditionella CAV-systemet. För att undersöka detta sker simuleringar av fiktiva modeller i programmet IDA Indoor Climate & Energy (IDA). IDA är ett simuleringsverktyg som används till att simulera den termiska komforten i byggnader samt byggnadens energianvändning. De olika rumstyperna som simuleras är: klassrummet, kontoret och mötesrummet. De olika fallen är utformade så att de liknar så som de ser ut i verkligheten både till geometri och nyttjandegrad. Om något av fallen visade sig vara en bra kandidat för att förse med VAV fortsätter utredningen med att fastställa hur stort bör flödet vara för att energibesparingen ska bli så stor så att det täcker investeringskostnaden. Den ekonomiska kalkyleringen sker både med en livscykelkostnadsanalys och med en enklare återbetalningstidskalkyl. Resultatet för simuleringarna visade att den enda rumstypen i denna utredning som var lönsam var mötesrummet. Klassrummet och kontoret visade sig båda ge en förlust. Detta var eftersom nyttjandegraden för dessa rum var så pass hög så att ventilationen med VAV var igång nästan lika mycket som för CAV. För mötesrummet var nyttjandegraden betydligt lägre vilket innebar att energibesparingen blev så pass hög att den täckte den höga investeringskostnaden. För mötesrummet gjordes sedan en flödesanalys som visade att rummets luftflöde bör vara dimensionerat för mellan omkring 20 – 30 personer för att vara en lönsam investering. 

  • 18817.
    Ängskog, Per
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH - Royal Institute of Technology.
    Avsiktliga elektromagnetiska störningar: Det osynliga hotet2014In: Electronic Environment, no 1, p. 16-17Article in journal (Other (popular science, discussion, etc.))
  • 18818.
    Ängskog, Per
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH - Royal Institute of Technology.
    EMP-symposium 8-9 maj 2014 i Oslo2014In: Electronic Environment, no 2, p. 22-23Article in journal (Other (popular science, discussion, etc.))
  • 18819.
    Ängskog, Per
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
    Measurement and Analysis of Radio Wave Coverage in Industrial Environments2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Several studies have characterized the path loss properties in industrial environments. However most of them have focused on one frequency, and some two or maximum three frequencies, usually cellular telephone frequencies or the unlicensed ISM bands that are commonly used in various industries. Few, if any, have characterized a larger part of the useable frequency range.This thesis is taking that challenge and investigates the path loss characteristics over a large frequency range, 300 MHz – 3 GHz, in industrial environments.

    First a measurement system suitable for the harsh environments found in industries is designed and verified. The measurement system is designed as two asynchronous stand-alone units that can be positioned at an arbitrary position to measure the path loss characteristics in any environment without interfering with the normal activities at the location.

    After that a measurement campaign involving three different types of environments is carried out. The environment types are: first, one highly absorbing – a paper warehouse at a paper mill; second, one highly reflective – a furnace building filled with metal objects and constructions and third, a mine tunnel – located 1 km below the surface of earth which is neither highly reflective nor absorbing but exhibits somewhat wave-guide like characteristics.

    The environments are shown to have very different behavior when it comes to propagation characteristics. Observations in the first environment reveal an environment that almost cancels out certain frequency bands and only line-of-sight communication is possible, hence no improvement will be achieved if installing systems that take multipath propagation into account, like MIMO. In the second environment reflections are legion; there are so many reflecting surfaces at different angles so any polarization of the signal is almost completely eliminated. Large fading variations were observed.The third environment is the underground mine where signals propagate inside the tunnels like in waveguides. It is shown that there are regions in the spectrum where the path loss dips and that these dips at least partly can be modeled with a simple two-beam propagation model normally used for outdoor propagation over infinite fields.

    The overall conclusion is that industrial environments are more heterogeneous regarding propagation characteristics than commonly assumed when selecting communication solutions. And that the only way to really know if a radio system will work at a certain location is to measure and characterize the environment.

  • 18820.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. Electromagnetic Engineering Lab, KTH - Royal Institute of Technology, Stockholm, Sweden.
    Backstrom, M.
    Electromagnetic Engineering Lab, KTH - Royal Institute of Technology, Stockholm, Sweden; SAAB Aeronautics, SAAB AB, Linköping, Sweden.
    Vallhagen, B.
    SAAB Aeronautics, SAAB AB, Linköping, Sweden.
    Samuelsson, C.
    SAAB Aeronautics, SAAB AB, Linköping, Sweden.
    Shielding effectiveness of energy saving windows and HPM effects on coated window panes: Measurements conducted 2014-2016 - Results and lessons learned2016In: IEEE International Symposium on Electromagnetic Compatibility, 2016, p. 461-466, article id 7739288Conference paper (Refereed)
    Abstract [en]

    The past few decades have shown a veritable explosion of new versions of energy-saving windows and coated window panes. In the wake of this, problems with radio communications into and from within buildings has arisen. However, this unexpected attenuation of radio signals may also be used to shield a facility from incoming intentional electromagnetic interference (IEMI). With the intention to investigate the shielding effectiveness (SE) of modern windows and window panes a two-year measurement campaign was launched mid-2014. Another, little investigated area is what happens to coated glass when irradiated by a high-power microwave (HPM) source. Shielding effectiveness has been measured for different types of energy saving windows and coated window panes both in a semi-anechoic chamber and in a reverberation chamber over the frequency range 1-18 GHz. The effects of HPM irradiation were studied by comparing SE measured before and after the pulsed 28 kV/m L-band irradiation. The main conclusion is that with the right choice of window the shielding effectiveness of a building can reach up 40-50 dB. In this paper we summarize these measurements and lessons learned from the measurement campaign.

  • 18821.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electrical Engineering, Mathematics and Science, Electronics. Department of Electromagnetic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.
    Bäckström, Mats
    Department of Electromagnetic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.
    Samuelsson, Carl
    Saab Aeronautics, Linköping, Sweden.
    Kangashaka Vallhagen, Bengt
    Saab Aeronautics, Linköping, Sweden.
    Shielding Effectiveness and HPM Vulnerability of Energy-Saving Windows and Window Panes2019In: IEEE transactions on electromagnetic compatibility (Print), ISSN 0018-9375, E-ISSN 1558-187X, Vol. 61, no 3, p. 870-877Article in journal (Refereed)
    Abstract [en]

    In this paper, we report results from shielding effectiveness measurements on energy-saving windows and individual, coated window panes of different generations, as well as results from high-power microwave irradiation on single panes. Shielding effectiveness was measured with two complementary methods: first, with near isotropic irradiation in nested reverberation chambers, and the other with irradiation at normal incidence in a semianechoic chamber. The measurements show that the construction of the energy conserving windows has a clear impact on how well they attenuate radio frequency signals. The more modern the window or pane, the higher is the shielding effectiveness. The high-power irradiation on coated panes showed that depending on the type of coating, hotspots can build up causing the coating to crack and, hence, deteriorate the shielding effectiveness. These results may serve as guidance when reviewing high-altitude electromagnetic pulse (EMP), high-power microwave, or intentional electromagnetic interference protection of critical infrastructures, and provide assistance in the work with reduction of compromising emanations.

  • 18822.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH - Royal Institute of Technology, Stockholm, Sweden.
    Bäckström, Mats
    KTH - Royal Institute of Technology, Stockholm, Sweden.
    Samuelsson, Carl
    Saab Aeronautics - SAAB AB.
    Vallhagen, Bengt
    Saab Aeronautics - SAAB AB.
    Shielding Effectiveness Studies of Energy Saving Windows and Coated Window Panes - a Summary2016In: Proceedings of the European Electromagnetics Symposium (EUROEM) 2016, London: Institution of Engineering and Technology, 2016, article id 7.a.2Conference paper (Refereed)
    Abstract [en]

    In recent decades, window panes and windows have undergone a virtual revolution with respect to energy saving. Along with this revolution a strong reduction of radio transmission capability through windows has followed. It has been observed that radio communication (e.g. mobile telephony) in newly built or renovated buildings has become increasingly difficult to accomplish due to the higher attenuation in these energy-saving windows. On the upside though, the increased attenuation can help in the protection against intentional electromagnetic interference (IEMI) and compromising emanations from activities inside the building.

    In this paper we summarize shielding effectiveness (SE) measurements conducted on window panes and window modules during 2014 and 2015 and give some conclusions drawn regarding do’s and don’ts when installing windows.

  • 18823.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH, Elektroteknisk teori och konstruktion.
    Bäckström, Mats
    KTH, Elektroteknisk teori och konstruktion; SAAB Aeronautics, SAAB AB.
    Vallhagen, Bengt
    SAAB Aeronautics, SAAB AB.
    High Power Microwave Effects on Coated Window Panes2015In: Asia Electromagnetics Conference (ASIAEM) 2015, 2015Conference paper (Refereed)
    Abstract [en]

    Today window panes are usually coated with at least one metal or metal oxide layer to prevent heat energy of the light spectrum from propagating to the other side. This has given problems regarding radio propagation through windows, which might be utilized as a part of a buildings IEMI protection. This paper reports the results from measurements of the shielding effectiveness of a selection of modern window panes before and after irradiation with high power electromagnetic waves. The shielding effectiveness measurements are made in a nested reverberation chamber covering the range 1 – 18 GHz; both before and after high power irradiation at 1.3 GHz. The results show that the shielding effectiveness of window panes may be severely impaired due to thermal stress effects on the coatings during the irradiation, depending of the type of coating.

  • 18824.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH, Elektroteknisk teori och konstruktion.
    Bäckström, Mats
    KTH, Elektroteknisk teori och konstruktion; SAAB Aeronautics, SAAB AB.
    Vallhagen, Bengt
    SAAB Aeronautics, SAAB AB.
    Measurement of Radio Signal Propagation through Window Panes and Energy Saving Windows2015In: 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), IEEE conference proceedings, 2015, p. 74-79Conference paper (Refereed)
    Abstract [en]

    Glass windows have undergone an energy saving evolution over the past three, four decades, from single panes till today’s ultralow-emission windows. While the earliest energy saving windows were constructed as a sandwich of clear glass panes using the vacuum-flask principle, modern low-emission windows includes panes with coatings of metal and/or metal oxides. This coating has caused radio propagation problems for communication systems; something that may be utilized to protect a building from intentional electromagnetic interference (IEMI) attacks and to help protecting against information leakage. In this paper measurements of the shielding performance of different generations of windows and qualities of window panes are presented. The intention is to include the results in a guide-line for IEMI protection of critical infrastructures. Measurements are made using two complementary methods; in a nested reverberation chamber and in a semi-anechoic chamber, both over the range 1 – 18 GHz. The results show a clear generation dependency where the energy saving windows largely do not attenuate RF signals at all and low-emission windows offer shielding effectiveness values between 10 and 45 dB with potentially as much as around 60 dB in the upper half of the spectrum.

  • 18825.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH - Royal Institute of Tecknology.
    Bäckström, Mats
    KTH - Royal Institute of Technology; Saab Aeronautics - SAAB AB.
    Vallhagen, Bengt
    Saab Aeronautics - SAAB AB.
    Samuelsson, Carl
    Saab Aeronautics - SAAB AB.
    Skärmverkan och mikrovågseffekter på fönster och fönsterglas2016Conference paper (Refereed)
    Abstract [sv]

    Ett allt vanligare fenomen är att mobil telekommunikation inte fungerar i moderna/nybyggda hus. Detta kan härledas till de moderna energisparfönster som monteras in. Denna skärmverkan är inte bara ett problem utan kan också vändas till en fördel i de fall man vill skydda verksamhet från yttre elektromagnetiska störningar, till exempel avsiktlig elektromagnetisk störning (IEMI), samt i de fall då man vill undvika att röjande strålning (RÖS) från elektronisk utrustning läcker ut och kan avlyssnas.

    Här kommer vi presentera resultaten från mätningar av skärmverkan hos dels fönster av olika generation och dels enskilda fönsterglas med olika funktion som används för att bygga upp dessa fönster. Dessutom presenteras resultat från mätningar av hur skärmverkan påverkas vid bestrålning med högeffekts mikrovågsstrålning (HPM).

  • 18826.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH - Royal Institute of Technology.
    Bäckström, Mats
    KTH - Royal Institute of Technology.
    Vallhagen, Bengt
    Saab Aeronautics - SAAB AB.
    Samuelsson, Carl
    Saab Aeronautics - SAAB AB.
    Skärmverkan och mikrovågseffekter på fönster och fönsterglas2016In: Electronic Environment, Vol. -, no 3, p. 26-29Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Ett allt vanligare fenomen är att mobil telekommunikation inte fungerar i moderna/nybyggda hus. Detta kan härledas till de moderna energisparfönster som monteras in. Denna skärmverkan är inte bara ett problem utan kan också vändas till en fördel i de fall man vill skydda verksamhet från yttre elektromagnetiska störningar, till exempel avsiktlig elektromagnetisk störning (IEMI), samt i de fall då man vill undvika att röjande strålning (RÖS) från elektronisk utrustning läcker ut och kan avlyssnas.

    Här kommer vi presentera resultaten från mätningar av skärmverkan hos dels fönster av olika generation och dels enskilda fönsterglas med olika funktion som används för att bygga upp dessa fönster. Dessutom presenteras resultat från mätningar av hur skärmverkan påverkas vid bestrålning med högeffekts mikrovågsstrålning (HPM).

  • 18827.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Chilo, José
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    WLAN IEEE 802.11 i industriella miljöer: en riskabel strategi2013Conference paper (Refereed)
    Abstract [sv]

    WLAN är förmodligen den vanligaste trådlösa installationen inom våra industrier idag. Vad få inser är att den lösning de valt i första hand är avsedd för an vändning i kontorsmiljö med helt andra krav på säkerhet och robusthet.

  • 18828.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Chilo, José
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    WLAN IEEE 802.11 i industriella miljöer: En riskabel strategi2012In: Electronic Environment, Vol. 3, p. 24-26Article in journal (Other academic)
  • 18829.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Chilo, José
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Stenumgaard, Peter
    FOI.
    Limitations of WLAN IEEE 802.11 in Industrial Environments2012Conference paper (Refereed)
  • 18830.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Karlsson, Carl
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Ferrer Coll, Javier
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Chilo, José
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Stenumgaard, Peter
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Sources of Disturbances on Wireless Communication in Industrial and Factory Environments2010In: 2010 Asia-Pacific Symposium on Electromagnetic Compatibility, APEMC 2010, 2010, p. 281-284Conference paper (Refereed)
    Abstract [en]

    Electrical and mechanical machinery, highly reflective industrial facilities and co-existing communication systems are the major sources of disturbances in wireless industrial applications. Characterization of industrial environments is important for the development of standards, to assess current and future deployment of wireless technologies, and to provide systems integrators and end user with guidelines. In this paper some deductions from measurements carried out at three industrial environments using traditional electric field strength, amplitude probability distribution (APD) and multipath time dispersion measurements are presented. These measurements have given surprising and interesting results.

  • 18831.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electrical Engineering, Mathematics and Science, Electronics. Department of Electromagnetic Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.
    Näsman, Per
    Department of Real Estate and Construction Management, Building, and Real Estate Economics, Center for Safety Research, KTH Royal Institute of Technology, Stockholm, Sweden.
    Mattsson, Lars-Göran
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Resilience to intentional electromagnetic interference is required for connected autonomous vehicles2019In: IEEE transactions on electromagnetic compatibility (Print), ISSN 0018-9375, E-ISSN 1558-187X, Vol. 61, no 5, p. 1552-1559Article in journal (Refereed)
    Abstract [en]

    The connected autonomous vehicle (CAV) will never be completely autonomous; on the contrary, it will be heavily dependent on so-called vehicular ad hoc networks (VANETs) for its function. To deserve the trust of the general public, the vehicles as well as the intelligent transport system (ITS) infrastructure must be able to handle not only natural disturbances but also attacks of malicious nature. In this paper, we discuss the effects of antagonistic attacks using intentional electromagnetic interference (IEMI) and how the antagonistic nature of the threat renders probabilistic risk analysis inadequate for the defense of the vehicles and the infrastructure. Instead, we propose a shift toward resilience engineering and vulnerability analysis to manage antagonistic threats. Finally, we also give two examples of possible scenarios to illustrate the type of situations a CAV must be able to handle.

  • 18832.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH – Royal Institute of Technology, Stockholm, Sweden.
    Oakes, Ben
    KTH – Royal Institute of Technology, Stockholm, Sweden.
    Maintaining Functional Safety under an Intentional Electromagnetic Interference (IEMI) Attack2013Conference paper (Refereed)
    Abstract [en]

    The importance of protection against IEMI effects in civilian applications is growing rapidly as more and more societal infrastructure is equipped with electronic devices. This paper discusses methods to help maintaining functional safety in the event of an IEMI attack.

  • 18833.
    Ängskog, Per
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH, Elektroteknisk teori och konstruktion.
    Ödman, Torbjörn
    SAAB Electronic Defence Systems, SAAB AB.
    Bäckström, Mats
    KTH, Elektroteknisk teori och konstruktion; SAAB Aeronautics, SAAB AB.
    Vallhagen, Bengt
    SAAB Aeronautics, SAAB AB.
    Shielding Effectiveness Study of Two Fabrics with Microwave Properties Before and After High Power Irradiation2015In: Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications: ICEAA 2015, IEEE conference proceedings, 2015, p. 930-933Conference paper (Refereed)
    Abstract [en]

    Over the past decade several applications forfabrics with electromagnetic properties have emerged, most ofthem relating to garments, including jackets with built-inantennas and workwear with increased radar visibility. Besidethese have surfaced two protective applications, namely toprotect transports of confidential equipment from discoveryand identification; and to protect sensitive apparatus fromdamage by high power electromagnetic irradiation e.g. in fieldoperations. In this paper results are presented frommeasurement of shielding effectiveness before and after highpower radiation for two types of fabrics under considerationfor the latter applications. Shielding effectivenessmeasurements have been conducted between 1 and 18 GHzwhile the high power irradiation

  • 18834.
    Ärlemar, Simone
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Larsson, Marie
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Att belysa patienters erfarenheter av att vistas under tvång inom den psykiatrisk heldygnsvården: Litteraturstudie2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Psykisk ohälsa är ett stort problem i samhället som många är drabbade av. Det är en livssituation som kan leda till att man tappar kontrollen över sitt liv och få förödande konsekvenser. Om individen nekar till vård så ger lagen om psykiatrisk tvångsvård rätten till ett omhändertagande. Syfte: Syftet med denna litteraturstudie var att undersöka patienters erfarenheter av att ha varit inlagd på tvång inom den psykiatriska heldygnsvården, samt att beskriva urvalsgrupper inom de valda artiklarna. Metod: En deskriptiv litteraturstudie. Med hjälp av databasen Cinahl har 15 stycken kvalitativa vetenskapliga artiklar granskats objektivt och analyserats av författarna för att uppnå studiens syfte. Huvudresultat: Resultatet innehåller information om patienternas negativa och positiva erfarenheter som presenteras i följande kategorier: Hopp och återhämtning, relationer till vårdpersonal och stigmatisering, relationer till andra patienter, sjukdomsinsikt och information, isolering och livskvalitet, rutiner och regler, miljö.Slutsats: Att vara inlagd mot sin vilja kan upplevas på olika sätt. Sjuksköterskans arbete är viktigt för patientens tillfrisknande och hantering av vardagslivet. Information om kommande behandling samt ett gott bemötande och engagerad personal är betydelsefullt för att stärka patientens autonomi och livslust.

  • 18835.
    Åberg, Anna
    University of Gävle, Department of Mathematics, Natural and Computer Sciences.
    Företagspresentation på Internet2006Student paper second term, 10 points / 15 hpStudent thesis
    Abstract [sv]

    Hedvigs Trädgård i Gävle är en handelsträdgård som specialiserar sig på hälsa och trädgård.

    Hedvigs Trädgård har idag ingen webbsida som visar deras verksamhet. Genom att ha en företagspresentation på Internet lockar de fler kunder och folk över hela världen kan se vilka de är och vad de gör. Brist på tid och kunskap har stoppat dem från att skapa en egen webbsida tidigare.

    Examensarbetet går ut på att skapa en enkel men innehållsrik webbplats åt Hedvigs Trädgård med ett tillhörande administrationsgränssnitt för att lägga till meddelanden och nyheter samt att uppdatera information.

    Nyckelord: Webbsida, administrationsgränssnitt, webbdesign, webb-programmering, HTML, Cascading Style Sheets, JavaScript, PHP, MySQL

  • 18836.
    Åberg, Christer
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Österberg, Maya
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Den urbana parkens användning och potential för social interaktion: En studie av Stadsträdgården i Gävle2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Urban green-spaces are considered to be more important today than ever before. Parks arenot only beneficial for their positive effects on human health, but also for their social aspects. Parks are consequently considered to be the most suitable environment for encounters between people with different backgrounds and interests. Urban parks have developed from a place where the city-eliteexpressedtheir power to the public into a common place for all. Even though the parksareconsidered to be an open and welcoming place,users are considered to represent a homogenous group of people, which in turn, eliminates the potential of social interaction between different social groups.

    In this thesis a part of the urban park, Stadsträdgården, is investigated with the intention to study and map its use, its users and the existing supply. The methods used in this project are a questionnaire and observations. During the observations elements like counting, mapping, a qualitative experiment and an inventory of the park-attributes have been implemented. In the park, a broad composition of visitors consisting of varied age, gender and ethnicity, can be found. The focus area of this case study is divided into zones through the area of use and the users. In parks, time is an important dimension controlling whether different people will meet or not. Social interaction between strangers occurs in a small amount, and when it does, it depends on a third component, an event or a physical object that calls for a common interest. The parklacksnumerous qualities in the existing supply of the parkaccording to the users. However, it is uncertain towhat extent the public influencesthe planning of existing urban parks in Gävle, and thus if their considerations are ever involved in the planning process.

  • 18837.
    Åberg, Curt
    Högskolan i Gävle-Sandviken.
    En vädur i bäcken: om metoder att lyfta och framleda vatten1990Report (Other academic)
  • 18838.
    Åberg, Curt
    Högskolan i Gävle-Sandviken.
    Landformer i Gävleområdet: genomgång av litteratur i ett omdiskuterat ämne1984Report (Other academic)
  • 18839.
    Åberg, Curt
    Högskolan i Gävle-Sandviken.
    Naturgeografi i vardagsnatur1989Report (Other academic)
  • 18840.
    Åberg, Curt
    Högskolan i Gävle-Sandviken.
    Vädurpumpen i Sverige: utvecklingen 1977-19911991Report (Other academic)
  • 18841.
    Åberg, Ellinore
    et al.
    University of Gävle, Department of Education and Psychology.
    Öhrn, Linda
    University of Gävle, Department of Education and Psychology.
    Krögares förhållningssätt till berusningsdrickande2008Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Abstrakt

    Åberg, E. & Öhrn, L. (2008) Krögares förhållningssätt till berusningsdrickande. C-uppsats i pedagogik. Institution för pedagogik, didaktik och psykologi. Högskolan i Gävle.

    Det ligger ett stort bedömningsansvar hos krögare vid servering av alkohol; de behöver göra en bedömning för varje gäst vid försäljning av alkohol. Denna studies syfte är att titta på hur krögare ser på gästernas berusningsdrickande och hur krögare uppfattar kampanjen Varannan vatten. Denna studie är en kvalitativ studie där det gjorts intervjuer med fyra stycken krögare. Frågorna behandlar krögares uppfattning gällande berusningsdrickande, upplevelser av att hantera berusade gäster på krogen samt krögares kännedom om kampanjen Varannan vatten. Resultatet visar att respondenternas uppfattning är att många påverkansfaktorer spelar in gällande berusningsdrickandet såsom ålder, krogmiljö, sinnesstämning och utbud av nattklubbar och pubar. Att avvisa en överberusad gäst ser de inte som något problem. Resultatet visar även respondenternas vetskap om kampanjen Varannan vatten och att majoriteten använt sig av den på sin arbetsplats.

    Nyckelord: Alkohol, berusningsdrickande och Varannan vatten

    Keywords: Alcohol, intoxication drinking and every other water

  • 18842.
    Åberg, Hannes
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Riskpunkter för översvämning inom avrinningsområdet för Järvstabäcken vid extremregn: Modellering med MIKE FLOOD2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Gävle municipality's plans to exploit the city to the south are under the general plan for the areas Järvsta and Ersbo, these areas are dewatered to Järvsta stream. This thesis is an investigation of the Järvsta stream regarding flood risk areas within the basin with consideration to the planned development areas. Investigation of the catchment area has been carried out through field visits, literature studies and modeling with MIKE FLOOD.

    The problem with Järvsta stream is that it is already heavily loaded. With increased development areas for housing and commercial areas in Hemlingby and Järvsta expected Järvsta stream to be even more loaded in case of extreme rainfall. Ersbo industrial area is also expected to affect surface water flows, hence higher proportion paved surface in combination with the planned landfill for snow in the industrial area expect to impact the flow frequencies. The landfill for snow in Ersbo affects the flow frequencies during the melt period.

    Risk Points of flooding is found in low points and passages under E4, Södra Kungsvägen, Upplandsleden and Bomhusvägen. These points should delay stormwater to increase control over flows and reduce the risk of flooding and cost of restoration of the buildings and infrastructure. Risk points adjacent to the existing residential areas and planned residential areas should be prioritized for investigation.

  • 18843.
    Åberg, Jessica
    University of Gävle, Faculty of Education and Business Studies, Department of Humanities.
    Ett sätt att arbeta språkutvecklande: En studie av genrepedagogikens cirkelmodell2013Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 18844.
    Åberg, Jessica
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Educational sciences.
    Lindberg, Jenny
    University of Gävle, Faculty of Education and Business Studies, Department of Educational sciences.
    Babblarna som språkmaterial: En intervjustudie om att använda Babblarna som ett material för att stödja de yngsta barnens språkutveckling2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I denna studie redogörs för hur några förskolepedagoger arbetar med språkmaterialet Babblarna utifrån deras mål att främja barns språkliga utveckling. Babblarna är ett material som bygger på att användas i barngrupp och som då blir som social aktivitet. Studiens syfte är att undersöka hur förskolepedagogerna ifråga arbetar med Babblarna samt att granska hur de uppfattar att barnen utvecklas genom språkmaterialet. I materialet med Babblarna finns bl.a. som plastfigurer, böcker och spel.

     

    Undersökningen har genomförts med hjälp av intervjuer med åtta förskolepedagoger som arbetar inom förskolan och med de yngsta barnen. Det resultat vi fått fram och förskolepedagogernas intervjusvar har tolkats utifrån ett sociokulturellt perspektiv.

    Samtliga förskolepedagoger som deltog i studien uppfattar ett tydligt intresse hos barnen i arbetet med Babblarna. Materialet med Babblarna har dessutom utvecklats vidare av förskolepedagogerna. Genom olika aktiviteter kring Babblarna blir det ett verktyg för att främja barnens språkliga utveckling.

  • 18845.
    Åberg, Joakim
    University of Gävle, Faculty of Education and Business Studies, Department of Humanities.
    The process of Individuation in Willy Loman: A Jungian Archetypal Literary Analysis of the Protagonist in Arthur Miller’s Play Death of a Salesman Compared to the Classical Hero of Odysseus in Homer’s The Odyssey2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study is an archetypal literary analysis of Arthur Miller’s play Death of a Salesman and Homer’s The Odyssey. The analysis aims to demonstrate how Arthur Miller’s protagonist, Willy Loman, in Death of a Salesman demonstrates several stages of Carl Gustav Jung’s theory of the individuation process, similar to Odysseus in Homer’s The Odyssey. This is done by identifying set archetypes and stages of Jung’s individuation process, the persona, the shadow, the anima, and the self. After that, the stages are applied to both Miller’s play and Homer’s epic poem. The analysis shows that both protagonists demonstrate and complete Jung’s individuation process. Willy Loman completes a symbolic journey, whereas Odysseus completes a physical one.

  • 18846.
    Åberg, Lina
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Modig, Linda-Marie
    Anhörigas upplevelser att leva med en närstående med demenssjukdom och kommunikationen mellan dem: En litteraturstudie2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 18847.
    Åberg, Linda
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Social Work and Psychology.
    Knudsen Wahlbom, Alexandra
    University of Gävle, Faculty of Health and Occupational Studies, Department of Social Work and Psychology.
    Blir det till barnets bästa?: En kvalitativ och komparativ studie om diskussionen kring barnets bästa i Gävle tingsrätts domar i vårdnads-, boende- och umgängestvister2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The child's best interest is described by researchers as elusive. Despite this, the concept is statutory and should be essential to decisions regarding custody, residence and contact. The purpose of this study was to inquire Gävle district court's discussion of the child's best interest in custody, residence and contact judgments in 1992, 2002 and 2012, and to study whether the arguing changed over time. Text analysis was applied to analyze data which then was studied by perspectives of socialconstructionism and sociology of law. A prominent result was that the district court's discussion of the child’s best interest is usually made indirectly. However, direct references to the concept of the child’s best interest increased, mainly in the judgments from 2012. This result might derive from the reforms made in the Swedish Parental Code in 2006. Another important conclusion we have come to concern is that the child’s best interest seem to be inconstant.

  • 18848.
    Åberg, Simon
    University of Gävle, Faculty of Engineering and Sustainable Development.
    Konstruktion av lyftanordning för slanka känsliga rör2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Sandvik Materials Technology, SMT, Tube Mill 68 in Sandviken, manufactures steam generator tubes for the nuclear industry. These tubes are up to 30 meters long and have a diameter of about 20 mm. When lifted out of the tube rack, where they are temporarily stored, a scrupulous care is required. Not the slightest scratch may occur on the tubes and they shouldn’t experience any deformation. The lifting is currently made by hand which is not preferable for the operators from a working environment point of view. Therefore there is a need for a lifting device to replace this manual procedure. The tubes will bend during lifting, and one of the aims with this thesis was to find relations between bending, lifting force and material stress. By beam theory application, experiments and analysis made using the Finite Element Method, stress and reacting forces on the tubes have been mapped and identified.

    Within lifting heights up to 1000 mm, and the bending that comes of that, the stress in the tubes reaches a maximum of 157 MPa. That gives a safety factor of 1.8 against permanent deformation. Some relations between bending and stress have also been determined. For example, the relationship between lifting height and material stress is exponential, and the stress increases according to a square root function.

    Based on interviews with the operators and results from calculations - a conceptual lifting device has been developed. While lifting the tubes in one end and placing them on the rolls of the device, the device is moved in under the tubes, obtaining a wave effect that lifts the tubes to desired level. The result is an innovative solution that takes advantage of the tubes elasticity.

  • 18849.
    Åberg, Siri
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Hornegård, Sofia
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences, Caring science.
    Sjuksköterskors erfarenheter och upplevelser av att arbeta inom akutsjukvård: En beskrivande litteraturstudie2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background

    Emergency care is a versatile and complex setting which is performed at a high pace. Patients within the critical care units are often victims of trauma. Previous studies have shown that the sufferers of trauma are not only the injured person but also the people who witness the effects of these traumatic injuries. Nurses who work in the emergency care setting is faced with high demands and are expected to cope with all the aspects of their work.

     

    Aim

    The aim of this study was to describe nurses experience and perspective of working with emergency medical care and to describe the included articles test groups.

     

    Method

    This was a literature study with a descriptive design. The result was composed of twelve scientific reports. Of these were one of quantitative approach and one had a mixed method approach with both qualitative and quantitative design. Remaining articles had qualitative approaches.

     

    Main results

    Nurses who were stationed in the emergency care setting perceived their work as unpredictable and hectic. It was viewed as a rewarding but also challenging profession. The nurses felt that it required a lot of them and they also got emotionally affected by the traumatic injuries they encountered. To handle their work the nurses used different coping strategies.

     

    Conclusion

    By applying the right coping strategies, get support from others and access to different resources the workload which had a mental impact got easier to manage.

  • 18850.
    Ådén, Hannah
    University of Gävle, Faculty of Education and Business Studies, Department of Culture Studies, Religious Studies and Educational Sciences.
    I Guds namn?: En studie om begreppet "jihad" och dess betydelse i västvärlden idag2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Studiens huvudsakliga syfte var att undersöka och förklara begreppen ”jihad” och "heligt krig" och svara på ifall dessa begrepp kunde användas för att rättfärdiga terrorism, samt förklara den politiska islam, al-Qaida och det Muslimska Brödraskapets kopplingar till terrorism idag. Undersökningen gjordes med hjälp av kvantitativa metoder och framförallt genom litteraturstudier. Resultatet visade att det inte finns någon definitiv förklaring till begreppet jihad, utan det finns åtminstone två sätt att tolka det på, samt att våld genom jihad kan rättfärdigas genom att tolka och ta koranverser ur sin kontext. 

374375376377378379380 18801 - 18850 of 19246
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf