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  • 451.
    Amin, Shoaib
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Characterization and Linearization of Multi-channel RF Power Amplifiers2015Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The demands for high data rates and broadband wireless access requirethe development of wireless systems that can support wide and multi-bandsignals. To deploy these signals, new radio frequency (RF) front-ends are requiredwhich impose new challenges in terms of power consumption efficiencyand sources of distortion e.g., nonlinearity. These challenges are more pronouncedin power amplifiers (PAs) that degrade the overall performance ofthe RF transmitter.Since it is difficult to optimize the linearity and efficiency characteristicsof a PA simultaneously, a trade-off is needed. At high input power, a PAexhibits high efficiency at the expense of linearity. On the other hand, atlow input power, a PA is linear at the expense of the efficiency. To achievelinearity and efficiency at the same time, digital pre-distortion (DPD) is oftenused to compensate for the PA nonlinearity at high input power. In case ofmulti-channel PAs, input and output signals of different channels interactwith each other due to cross-talk. Therefore, these PAs exhibit differentnonlinear behavior than the single-input single-output (SISO) PAs. The DPDtechniques developed for SISO PAs do not result in adequate performancewhen used for multi-channel PAs. Hence, an accurate behavioral modeling isessential for the development of DPD for multi-channel RF PAs.In this thesis, we propose three novel behavioral models and DPD schemesfor nonlinear multiple-input multiple-output (MIMO) transmitters in presenceof cross-talk. A study of the source of cross-talk in MIMO transmittershave been investigated to derive simple and powerful modeling schemes.These models are extensions of a SISO generalized memory polynomial model.A comparative study with a previously published MIMO model is also presented.The effect of coherent and partially non-coherent signal generationon DPD performance is also highlighted. It is shown experimentally thatwith partially non-coherent signal generation, the performance of the DPDdegrades compared to coherent signal generation.In context of multi-channel RF transmitters, PA behavioral models andDPD schemes suffer from a large number of model parameters with the increasein nonlinear order and memory depth. This growth leads to highcomplexity model identification and implementation. We have designed aDPD scheme for MIMO PAs using a sparse estimation technique for reducingmodel complexity. This technique also increases the numerical stability whenlinear least square estimation model identification is used.A method to characterize the memory effects in a nonlinear concurrentdual-band PAs is also presented. Compared to the SISO PAs, concurrentdual-band PAs are not only affected by intermodulation distortions but alsoby cross-modulation distortions. The characterization of memory effects inconcurrent dual-band transmitter is performed by injecting a two-tone testsignal in each input channel of the transmitter. Asymmetric energy surfacesare introduced for the intermodulation and cross-modulation products, whichcan be used to identify the power and frequency regions where the memory effects are dominant.

  • 452.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. Dept of Signal Processing, KTH Royal Institute of Technology, Stockholm, Sweden.
    Händel, Peter
    Dept of Signal Processing, KTH Royal Institute of Technology, Stockholm, Sweden.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Characterization and modeling of RF amplifiers with multiple input signals2016Conference paper (Refereed)
    Abstract [en]

    A characterization technique for RF PAs excited with multiple signals is presented. The technique can be used for characterization of memory effects in IM/CM products. The extracted information can in return be of use for modifying behavioral models to better capture memory in IM/CM products.

  • 453.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. Department of Signal Processing, School of Electrical Engineering, KTH.
    Händel, Peter
    Department of Signal Processing, School of Electrical Engineering, KTH.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Digital Predistortion of Single and Concurrent Dual Band Radio Frequency GaN Amplifiers with Strong Nonlinear Memory Effects2017In: IEEE transactions on microwave theory and techniques, ISSN 0018-9480, E-ISSN 1557-9670, Vol. 65, no 7, p. 2453-2464, article id 7855827Article in journal (Refereed)
    Abstract [en]

    Electrical anomalies due to trapping effects in Gallium Nitride (GaN) power amplifiers (PAs)give rise to long-term or strong memory effects. We propose novel models based on infinite impulse response (IIR) fixed pole expansion techniques for the behavioural modeling and digital pre-distortion of single-input-single-output (SISO) and concurrent dual-bandGaN PAs. Experimental results show that the proposed models outperform the corresponding finite impulse response (FIR) models by up to 17 dB for the same number of model parameters. For the linearization of a SISO GaN PA the proposed models give adjacent channel power ratios (ACPRs) that are 7 to 17 dBlower than the FIR models. For the concurrent dual-band case, the proposed models give ACPRs that are 9to 14 dB lower than the FIR models.

  • 454.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. ACCESS Linnaeus Centre, Department of Signal Processing, KTH Royal Institute of Technology, Stockholm.
    Khan, Zain Ahmed
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. ACCESS Linnaeus Centre, Department of Signal Processing, KTH Royal Institute of Technology, Stockholm.
    Isaksson, Magnus
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Händel, Peter
    ACCESS Linnaeus Centre, Department of Signal Processing, KTH Royal Institute of Technology, Stockholm.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Concurrent dual-band power amplifier model modification using dual two-tone test2016In: 46th Europena Microwave Conference (EUMC) 2016, 2016, p. 186-189Conference paper (Refereed)
    Abstract [en]

    A dual two-tone technique for the characterization of memory effects in concurrent dual-band transmitters is revisited to modify a 2D-DPD model for the linearization of concurrent dual-band transmitters. By taking into account the individual nonlinear memory effects of the self- and cross-kernels, a new2D modified digital pre-distortion (2D-MDPD) model is proposed,which not only supersedes the linearization performance but also reduces the computational complexity compared to the 2DDPDmodel in terms of a number of floating point operations(FLOPs). Experimental results show an improvement of 1.7 dBin normalized mean square error (NMSE) and a 58% reduction in the number of FLOPs.

  • 455.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH.
    Landin, Per
    Chalmers University of Technology.
    Händel, Peter
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. ACCESS Linnaeus Centre, Signal Processing Lab, KTH Royal Institute of Technology.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Behavioral Modeling and Linearization of Crosstalk and Memory Effects in RF MIMO Transmitters2014In: IEEE transactions on microwave theory and techniques, ISSN 0018-9480, E-ISSN 1557-9670, Vol. 62, no 4, p. 810-823Article in journal (Refereed)
    Abstract [en]

    This paper proposes three novel models for behavioral modeling and digital pre-distortion (DPD) of nonlinear 2$,times,$ 2 multiple-input multiple-output (MIMO) transmitters in the presence of crosstalk. The proposed models are extensions of the single-input single-output generalized memory polynomial model. Three types of crosstalk effects were studied and characterized as linear, nonlinear, and nonlinear & linear crosstalk. A comparative study was performed with previously published models for the linearization of crosstalk in a nonlinear 2 $,times,$2 MIMO transmitter. The experiments indicate that, depending on the type of crosstalk, the selection of the correct model in the transmitter is necessary for behavioral modeling and sufficient DPD performance. The effects of coherent and partially noncoherent signal generation on the performance of DPD were also studied. For crosstalk levels of ${-}{hbox{30}}$ dB, the difference in the normalized mean square error and adjacent channel power ratio was found to be 3–4 dB between coherent and partially noncoherent signal generation.

  • 456.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH, Signalbehandling.
    Landin, Per N.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Händel, Peter
    KTH, Signalbehandling.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    2D Extended envelope memory polynomial model for concurrent dual-band RF transmitters2017In: International journal of microwave and wireless technologies, ISSN 1759-0795, E-ISSN 1759-0787, Vol. 9, no 8, p. 1619-1627Article in journal (Refereed)
    Abstract [en]

    The paper presents a 2D extended envelope memory polynomial (2D-EEMP) model for concurrent dual-band radio frequency (RF) power amplifiers (PAs). The model is derived based on the physical knowledge of a dual-band RF PA. The derived model contains cross-modulation terms not included in previously published models; these terms are found to be of importance for both behavioral modeling and digital pre-distortion (DPD). The performance of the derived model is evaluated both as the behavioral model and DPD, and the performance is compared with state-of-the-art2D-DPD and dual-band generalized memory polynomial (DB-GMP) models. Experimental result shows that the proposed model resulted in normalized mean square error (NMSE) of -51.7/-51.6dB and adjacent channel error power ratio (ACEPR) of -63.1/-63.4 dB, for channel 1/2, whereas the 2D-DPD resulted in the largest model error and DB-GMP resulted in model parameters that are 3 times more than those resulted with the proposed model with the same performance. As pre-distorter, the proposed model resulted in adjacent channel power ratio (ACPR) of -55.8/ -54.6 dB for channel 1/2 and is 7-10 dB lower than those resulted with the 2D-DPD model and2-4 dB lower compared to the DB-GMP model.

  • 457.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
    Mehmood, Imran
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
    DETECTION OF MULTIPLE TARGETS USING ULTRA-WIDEBAND RADAR2011Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
    Abstract [en]

    In recent years, ultra-wideband (UWB) radars are gaining popularity in the radar field mainly inindustrial and commercial areas. The UWB radar has the potential of dramatically improving thecontrol and surveillance of industrial processes in confined areas.The report provides an introduction to radar systems and detail working principle of M-sequenceUWB radar and methodology of how detection of targets is carried out. First two chapters of thereport describes the working of radar systems and M-sequence radar whereas in the later part ofthe report, different detection algorithms are discussed which has been implemented in thepresent radar simulations. In conventional radar the main detection algorithm is matched filteringwhere the transmitted signal is correlated with the received signal. Whereas UWB signal is nonsinusoidalthat is vulnerable to change in its shape during entire radar operation. This is thereason, the traditional signal processing methods like matched filtering or correlation process arenot advisable for UWB signals. Therefore, a different detection scheme known as Inter-periodcorrelation process (IPCP) has been studied.IPCP technique had been implemented and a comparison was made with the conventional targetdetection algorithm. On the basis of comparison made in this project, it has been observed thatthe conventional target detection methods are not effective in case of M-sequence UWB radar.The simulation results shows that by implementing IPCP method, performance close to 8-bitADC can be achievable with 1-bit comparator, also with IPCP implementation system resolutioncan be enhance effectively.Main focus was to analyze how close the system can detect two targets, therefore in all themeasurements i.e. practical and simulated measurements, only two targets were used.

  • 458.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics. KTH, Signalbehandling.
    Van Moer, Wendy
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Händel, Peter
    Department of Signal Processing, KTH Royal Institute of Technology, Stockholm, Sweden .
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Characterization of concurrent dual-band power amplifiers using a dual two-tone excitation signal2015In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 64, no 10, p. 2781-2791, article id 7104121Article in journal (Refereed)
    Abstract [en]

    A method to characterize the memory effects in a nonlinear concurrent dual-band transmitter is presented. It is an extension of the conventional two tone test for power amplifiers to concurrent dual band transmitters. The output signal of a concurrent dual-band transmitter is affected not only by intermodulation products but also by cross-modulation products. In one frequency band, the transmitter is excited by a two tone signal which frequency separation is swept. In the second band the transmitter is concurrently excited by an other two tone signal with slightly wider frequency separation. The frequency difference of the two signals is fixed during the frequency sweep. The two tone test is made at different power levels. The upper and lower third-order inter- and cross-modulation products are measured. The asymmetry between the upper and lower third-order inter- and cross-modulation products are measures of the transmitter's memory effects. The measurement results show that the memory effects are more dominant in the third-order intermodulation products than in the cross modulation products. An error analysis and system calibration was performed and measurement results for two different devices are presented.

  • 459.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Van Moer, Wendy
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Händel, Peter
    Department of Information Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Rebuttal to "On Dual-Band Amplifications Using Dual Two-Tones Clarifications and Discussions"2017In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 66, no 10, p. 2795-2797Article in journal (Refereed)
    Abstract [en]

    This rebuttal is to "€œOn dual-band amplifications using dual two-tone: Clarifications and discussion". In the following, we provide our reply.

  • 460.
    Amin, Shoaib
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Zenteno, Efrain
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Landin, Per
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Rönnow, Daniel
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Isaksson, Magnus
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences, Electronics.
    Händel, Peter
    ACCESS Linnaeus Centre, Signal Processing Lab, KTH Royal Institute of Technology.
    Noise Impact on the Identification of DigitalPredistorter Parameters in the Indirect LearningArchitecture2012In: 2012 Swedish Communication Technologies Workshop (Swe-CTW), IEEE conference proceedings, 2012, p. 36-39Conference paper (Refereed)
    Abstract [en]

    The indirect learning architecture (ILA) is the mostused methodology for the identification of Digital Pre-distorter(DPD) functions for nonlinear systems, particularly for highpower amplifiers. The ILA principle works in black box modelingrelying on the inversion of input and output signals of thenonlinear system, such that the inverse is estimated. This paperpresents the impact of disturbances, such as noise in the DPDidentification. Experiments were performed with a state-of-artDoherty power amplifier intended for base station operationin current telecommunication wireless networks. As expected,a degradation in the performance of the DPD (measured innormalized mean square error (NMSE)) is found in our experiments.However, adjacent channel power ratio (ACPR) canbe a misleading figure of merit showing improvement in theperformance for wrongly estimated DPD functions.

  • 461.
    Amin, Sohaib
    University of Gävle, Department of Business Administration and Economics.
    Gender inequality in the workplace: Banks from Sweden and Pakistan2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of the study is to investigate the glass ceiling and the gender wage gap and reasons behind gender inequality in the banking sector of Sweden and Pakistan.

  • 462.
    Amini Alikani, Amineh
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Nygren, Sofia
    Upplevelse, livskvalitet och stöd från sjuksköterskor: en litteraturstudie om fatigue hos personer med MS2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: was to increase understanding of the experience of fatigue in people with MS and fatigues impact on quality of life and how the nurse can support and help people with MS in their everyday life.

    Method: Literature review with a descriptive design. Articles (n=15) were retrieved from Medline via PubMed and Cinahl and manual reference lists, six qualitative, eight quantitative and one with a combination of both approaches.

    Findings: it was found that fatigue in people with MS was an invisible symptom, lead to limitations in their everyday life, increased other symptoms and lead to social changes. People suffering from fatigue had lower quality of life than the general population. The findings showed what kind of support people with MS wanted from nurses. People with MS found their own strategies to manage and relieve fatigue, often without help from nurses.

    Conclusion: Fatigue in people with MS was a troublesome symptom which affected their everyday life and lowered their quality of life. Since fatigue was an invisible symptom it should be approached by nurses. More research is needed about how fatigue in people with MS should be treated and how nurses can best support people with MS to manage and relieve fatigue in their everyday life.

  • 463.
    Aminzoui, Abla
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Management, Industrial Design and Mechanical Engineering.
    Vikten av kommunikation med inköpsavdelning: En studie ur medarbetarperpektiv i en fastighetsbolag2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purchasing function has become a strategic position for most companies. Activity in an organization cannot be performed without the presence of the information, which means that communication is important for being able to perform a task or activity. Communication related to the purchasing process has been investigated at Gavlegårdarna, a real estate company located in Gävle. In this work, Gavlegårdarna wanted to examine whether there is an opportunity to improve communication and investigate factors that lead to a lack of communication. The purpose of this study was to get a general image and increase understanding of factors that affect communication. The study is based on a case study, where one interview took place in the purchasing department and a questionnaire sent out to people who work daily with purchasing function.

  • 464.
    Amiot, André
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies, Business administration.
    Hallin Johansson, Fredrik
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies, Business administration.
    Corporate Social Responsibility, Corporate Governance and CEO compenastion incentives2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Society's awareness of the importance of environmental-, social- and economic issues has increased over the last decades. This increased interest has led to the development of the Corporate Social Responsibility concept (CSR) in which companies actively work simultaneously with environmental, social and economic issues that extend beyond what is legally required by these companies in order to achieve a more sustainable society. As the interest in CSR has increased, a debate whether CSR is value-creating or should be considered an agency cost has arisen. To approach this question previous researches have used the CEO compensation to examine if the engagement in CSR actually is an agency cost or a value creating activity and found that agency costs can be mitigated by tying incentives to performance. Based on these assumptions this study will examine the link between CSR and agency costs using the existence of a CSR related compensation incentives for CEOs related agency costs.

    This study is characterized to be positivistic and within the field of positive accounting research as it has deductive approach in which hypotheses are formulated that this study intends to test which are based on what fundamental economic theories and previous research have found that may affect agency costs. The empirical data are manually collected from companies’ on NasdaqOMX Stockholm 2016 annual reports followed by an analysis of the data using univariate t-test and multiple regressions in order to relate these findings to previous research. This study finds no direct evidence that CEO compensation incentives related to CSR affect agency costs which means that we have not closed the ongoing debate whether CSR engagement is creating shareholder value or should be considered an agency cost. Nonetheless, the results show indications that agency costs are higher for companies that use CEO compensation incentives related to CSR which indicates that CSR is not beneficial to shareholders but should instead be regarded as an agency cost at the expense of shareholders. The result also indicates that a positive accounting research is not particularly useful on a small stock market with reliable results because the findings can not be generalized in a broader perspective

  • 465.
    Amiot, André
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies, Business administration.
    Kroon, Filip
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies, Business administration.
    Beslutsfattare i SMEs hantering av kapitalstruktur med avseende på kontroll & självständighet: En kvalitativ studie2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Aim: Previous research highlights the factors of control and independence as important for SMEs' choice of capital structure. However, their is a lack of research including decision makers which creates deeper understanding how and why decision makers in SMEs are affected.

    Purpose: The purpose of this study is to illustrate how decision makers in SMEs handle the problem of capital structure with regard to control and independence factors.

    Method: The study is based in an actor’s view with influences from hermeneutics and social constructionism. The research approach is abductive based on the shifting between theoretical and empirical reflection. The empirical material has been gathered through semi-structured interviews. The theoretical framework is based on previous research with regards on a constructive approach. The approach is to seek out the respondents' perspective on society and not objective facts based on a narrative analysis.

    Contribution: This study illustrates that control and independence affect decision makers during the investment process and in their choice of funding. The study suggests that decision makers refer to maintain control and independence by making decisions themselves and thus controlling the investment. The result highlights that speed and agility affect decision makers choice of funding with regards to control and independence factors. The study also highlights that decision makers in SMEs do not assume any set of capital structure and therefore differ from previous research. 

  • 466.
    Amiot, Victor
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Torung, Rikard
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Oliksidig krympning i betong2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Concrete is one of the most commonly used building materials in foundation construction. Concrete is highly resistant to external stresses and hence makes it a very useful material in many different situations. However, there are problems that can arise with the use of concrete. One of the more common is cracking. There are several reasons why this might occur, for example, external impact, creep and moist-related movements. The concrete slab is one of the elements that often encounter this problem. Since concrete slabs are frequently used as foundation, it is of great interest to find solutions for this matter. In order to do that, the causes are needed to be specified more clearly. This study investigated experimentally how a concrete slab reacts when differences in humidity exposing the top and bottom after curing period, and if this may contribute to sufficient deformation to cause cracking. Six specimens were made and observed where three where exposed to a moisture content of 100% on the bottom. The remaining three samples have been placed in dry conditions in order to make a comparison possible. A relative humidity of 25% was measured in the surrounding air. The experiment showed clear differences in deformation between the two situations. The samples exposed to differential humidity exhibited sufficient stresses to cause cracking seen from the moment that occurred in the concrete. This shows that different prevailing humidity on the top and bottom of a slab can create sufficient stress to cause cracking.

  • 467.
    Amiri, Shahnaz
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy engineering. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Energisystem.
    Economic and Environmental Benefits of CHP-based District Heating Systems in Sweden2013Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Future energy systems and thus the climate are affected by many factors, such as energy resources, energy demand, energy policy and the choice of energy technologies. Energy systems of the future are facing three main challenges; the steady growth of global energy demand, the energy resource depletion, as well as the increasing emissions of carbon dioxide (CO2) and other greenhouse gases and their impact on climate change. To meet the mentioned challenges with sustainability in mind, actions that increase energy efficiency and choosing an energy-efficient energy system which is cost efficient will be essential. Combined heat and power (CHP) plants and district heating and cooling could contribute greatly to increased system efficiency by using energy otherwise wasted.

    The aim of this study is to increase the understanding of how CHP-based district heating and cooling systems using different primary energy sources can contribute to more cost-efficient energy systems, which reduce global CO2 emissions, and to highlight the impact of some important parameters and measures on Swedish municipal district heating systems. An important assumption in this study is the estimation of CO2 emissions from electricity production, which is based on marginal electricity perspectives. In the short term, the marginal electricity is assumed to come from coal-fired condensing power plants while in the long term it consists of electricity produced by natural gas-fired combined cycle condensing power plants. This means that the local electricity production will replace the marginal electricity production. The underlying assumption is an ideal fully deregulated European electricity market where trade barriers are removed and there are no restrictions on transfer capacity.

    The results show that electricity generation in CHP plants, particularly in higher efficiency combined steam and gas turbine heat and power plants using natural gas, can reduce the global environmental impact of energy usage to a great extent. The results confirm, through the scenarios presented in this study, that waste as a fuel in CHP-based district heating systems is fully utilised since it has the lowest operational costs. The results also show how implementation of a biogas-based CHP plant in a biogas system contributes to an efficient system, as well as lowering both CO2 emissions and system costs. The results show that replacing electricity-driven (e.g. compression) cooling by heat-driven cooling using district heating (e.g. absorption chillers) in a CHP system is a cost-effective and climate friendly technology as electricity consumption is reduced while at the same time the electricity generation will be increased. The results of the study also show that there is potential to expand district heating systems to areas with lower heat density, with both environmental and economic benefits for the district heating companies.

    The results reveal that the operation of a studied CHP-based district heating system with an imposed emission limit is very sensitive to the way CO2 emissions are accounted, i.e., local CO2 emissions or emissions from marginal electricity production. The results show how the electricity production increases in the marginal case compared with the local one in order to reduce global CO2 emissions. The results also revealed that not only electricity and fuel prices but also policy instruments are important factors in promoting CHP-based district heating and cooling systems. The use of electricity certificates has a large influence for the introduction of biogas-based cogeneration. Another conclusion from the modelling is that present Swedish policy instruments are strong incentives for cogeneration with similar impact as applying external costs.

  • 468.
    Amiri, Shahnaz
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy engineering. Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden.
    Henning, Dag
    Optensys Energianalys, Linköping, Sweden .
    Karlsson, Björn G.
    Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden .
    Simulation and introduction of a CHP plant in a Swedish biogas system2013In: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 49, p. 242-249Article in journal (Refereed)
    Abstract [en]

    The objectives of this study are to present a model for biogas production systems to help achieve a more cost-effective system, and to analyse the conditions for connecting combined heat and power (CHP) plants to the biogas system. The European electricity market is assumed to be fully deregulated. The relation between connection of CHP. increased electricity and heat production, electricity prices, and electricity certificate trading is investigated. A cost-minimising linear programming model (MODEST) is used. MODEST has been applied to many energy systems, but this is the first time the model has been used for biogas production. The new model, which is the main result of this work, can be used for operational optimisation and evaluating economic consequences of future changes in the biogas system. The results from the case study and sensitivity analysis show that the model is reliable and can be used for strategic planning. The results show that implementation of a biogas-based CHP plant result in an electricity power production of approximately 39 GW h annually. Reduced system costs provide a profitability of 46 MSEK/year if electricity and heat prices increase by 100% and electricity certificate prices increase by 50%. CO2 emission reductions up to 32,000 ton/year can be achieved if generated electricity displaces coal-fired condensing power.

  • 469.
    Amiri, Shahnaz
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy engineering.
    Moshfegh, Bahram
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy engineering.
    Possibilities and consequences of deregulation of the European electricity market for connection of heat sparse areas to district heating systems2010In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 87, no 7, p. 2401-2410Article in journal (Refereed)
    Abstract [en]

    The objective of the study is to analyse the conditions for connection of residential buildings in heat sparse areas to district heating systems in order to increase electricity production in municipal combined heat and power plants. The European electricity market has been assumed to be fully deregulated. The relation between connection of heat sparse areas, increased electricity and heat production as well as electricity prices, fuel prices and emissions rights is investigated. The results of the study show that there is potential to expand the district heating market to areas with lower heat concentrations in the cities of Gavle, Sandviken and Borlange in Sweden, with both economic and environmental benefits. The expansion provides a substantial heat demand of approximately 181 GWh/year, which results in an electricity power production of approximately 43 GWh/year. Since the detached and stand-alone houses in the studied heat sparse areas have been heated either by oil boiler or by direct electricity, connection to district heating also provides a substantial reduction in emissions of CO(2). The largest reductions in CO(2) emissions are found to be 211 ktonnes/year assuming coal-fired condensing power as marginal electricity production. Connection of heat sparse areas to district heating decrease the system costs and provide a profitability by approximately 22 million EURO/year for the studied municipalities if the price of electricity is at a European level, i.e. 110 EURO/MWh. Sensitivity analysis shows, among other things, that a strong relation exists between the price of electricity and the profitability of connecting heat sparse areas to district heating systems.

  • 470.
    Amiri, Shahnaz
    et al.
    University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för energi- och maskinteknik. Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden.
    Trygg, Louise
    Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden.
    Moshfegh, Bahram
    University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för energi- och maskinteknik. Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden.
    Assessment of the natural gas potential for heat and power generation in the County of Östergötland in Sweden2009In: Energy Policy, ISSN 0301-4215, E-ISSN 1873-6777, Vol. 37, no 2, p. 496-506Article in journal (Refereed)
    Abstract [en]

    The aim of this study is to investigate the potential use of natural gas for heat and power production for the municipality of Linkoping, Norrkoping and Finspang in the County of Ostergotland, Sweden. The results of the study revealed that these three municipalities with the present heating demand can convert 2030 GWh/year of the present fuel mixed to natural gas. The expansion of natural gas provides the possibility to increase the electricity generation with approximately 800 GWh annually in the County of Ostergotland. The global emissions of CO(2) reduce also by approximately 490 ktonne/year by assuming the coal condensing power plant as the marginal power plant. The total system cost decreases by 76 Mkr/year with the present electricity price which varies between 432 and 173 SEK/MWh and with 248 Mkr/year if the present electricity price increases to 37% which is approximately corresponding to European electricity prices. Sensitivity analysis is done with respect to the different factors such as price of electricity, natural gas, etc. The findings show that increased price of electricity and increased district heating demand increases the profitability to convert to natural gas using CHP plant. (C) 2008 Elsevier Ltd. All rights reserved.

  • 471.
    Amiri, Shahnaz
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system. Department of Management and Engineering, Division of Energy Systems, Linköping University, Linköping, Sweden.
    Weinberger, Gottfried
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system.
    Increased cogeneration of renewable electricity through energy cooperation in a Swedish district heating system - A case study2018In: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 116, p. 866-877Article in journal (Refereed)
    Abstract [en]

    The present study of the district heating (DH) system in the city of Kisa, Sweden, shows how, through energy cooperation with a nearby sawmill and paper mill, a local energy company contributes to energy-efficient DH and cost-effective utilization of a new biofuel combined heat and power (CHP) plant. Cases of stand-alone and integrated energy systems are optimized with the linear program MODEST. The European power market is assumed to be fully deregulated. The results show clear advantages for the energy company to cooperate with these industries to produce heat for DH and process steam for industry. The cooperating industries gain advantages from heat and/or biofuel by-product supply as well. The opening to use a biofuel CHP plant for combined heat supply results in cogenerated electricity of almost 29 GWh/a with an increased biofuel use of 13 GWh/a, zero fuel oil use and CO2 emission reductions of 25,800 tons CO2/a with coal-condensing power plant on the margin and biofuel as limited resource. The total system cost decreases by −2.18 MEUR/a through extended cooperation and renewable electricity sales. The sensitivity analysis shows that the profitability of investing in a biofuel CHP plant increases with higher electricity and electricity certificate prices.

  • 472.
    Amlén, Maria
    University of Gävle, Faculty of Education and Business Studies, Department of Culture Studies, Religious Studies and Educational Sciences.
    Kristendomens och kyrkans roll förr och nu i en liten mellansvensk by2012Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 473.
    Ammert, Niklas
    et al.
    Faculty of Arts and Humanities, Linnaeus University, Sweden.
    Edling, Silvia
    University of Gävle, Faculty of Education and Business Studies, Department of Educational sciences, Educational science.
    Löfstrom, Jan
    History and Social Studies Education, University of Helsinki, Finland.
    Sharp, Heather
    School of Education, University of Newcastle, Australia.
    Bridging historical consciousness and moral consciousness: promises and Challenges2017In: Historical Encounters: A journal of historical consciousness, historical cultures and history education, E-ISSN 2203-7543, Vol. 4, no 1, p. 1-13Article in journal (Refereed)
    Abstract [en]

    This special issue is the result of the workshop, Towards an integrated theory ofhistorical and moral consciousness, supported by Riksbankens Jubileumsfond (The SwedishFoundation for Humanities and Social Sciences) and Suomen kasvatuksen ja koulutuksen historianseura (The Finnish Society for the History of Education) and held at the University of Helsinki, in2015. History teaching and social studies education are increasingly expected to develop, amongother things, students’ historical consciousness. This goal is highly relevant for students’ ability todeal constructively with controversial issues of history which is an important civic competence inthe situation where in many societies’ political arguments concerning, for example, citizenshiprights, ethnic and cultural diversity, and democracy are only too often fuelled by simplistic narrativesof historical change and continuity. However, there is a blank spot in the existing research onhistorical consciousness in that intersections between historical and moral consciousness remainvery much unexplored. This special issue seeks to identify promising theoretical and conceptualpoints of convergence for future interdisciplinary studies of historical and moral consciousness.Contributors are from the fields of history, educational research, social psychology, and philosophy.

  • 474.
    Ammert, Niklas
    et al.
    Linnéuniversitet.
    Löfström, Jan
    Helsingfors universitet.
    Edling, Silvia
    University of Gävle.
    Sharp, Heather
    Newcastle University, Australia.
    Identifying aspects of temporal orientation in students’ moral reflections2019Conference paper (Refereed)
  • 475.
    Amra, Olfat
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Larsson, Malin
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Egenvårdens roll i förebyggandet av fotsår vid omvårdnaden av personer med diabetes mellitus typ 1 och typ 2: En litteraturstudie2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 476.
    Amselem, Yohanna
    University of Gävle. University of Gävle, Department of Mathematics, Natural and Computer Sciences.
    Hemträdgårdens Skafferi: inventering av ätbara, skötselextensiva växter för hemträdgården2010Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Hur vi lever och vad vi konsumerar får konsekvenser på miljön. Idag orsakar en stor del av livsmedelsproduktionen allvarliga miljöproblem. Att odla delar av sin mat i den egna trädgården bidrar till en ekologiskt hållbar livsstil, minskar den individuella miljöpåverkan och därmed det egna ekologiska fotavtrycket.  En allmän trend råder gentemot skötselextensiva trädgårdar, ofta anses det oförenligt med en nyttoträdgård. En utgångspunkt för detta arbete är att skötselextensiva odlingsmetoder kan vara av intresse för en växande målgrupp av miljömedvetna människor. Syftet med arbetet är att undersöka hur det går att förena skötselextensivitet med produktivitet i hemträdgården med tanke på växtval och komposition. Frågeställningar som besvaras är; vilka växter kan vara av intresse för den som vill odla skötselextensiva ätbara växter i sin hemträdgård? Hur kan dessa växter planteras så att trädgården blir skötselextensiv? Metoden som används är informationssökning i litteratur och internet.  I resultatets första del tas olika skötselextensiva kategorier av växter upp. Träd och buskar lyfts fram som dem mest skötselextensiva växtkategorierna. Även örtartade perenner innebär ett flertal fördelar när det gäller skötselextensivitet. Andra växtgrupper är perenna vattenväxter samt annueller och bienner som självsår sig. Odling av örtartade och vedartade ätliga perenner i form av polykulturer och skogsträdgårdar kan efter etableringsfasen innebära lite skötsel i förhållande till produktivitet. Därmed   anges polykulturer och skogsträdgårdar (en särskild form av polykultur) som exempel på skötselextensiv växtkomposition. Resultatets slutliga del består av en växtlista redovisad i tabeller och listar 233 ätbara växter som kan användas i skötselextensiva planteringar, inklusive träd, buskar, bambu, perenner, lökväxter,  vattenväxter samt annueller och bienner som självsår sig. Samtliga växter är härdiga i zon 3 och kallare. Dessa växter kan förslagsvis kombineras i polykulturer och skogsträdgårdar. Systemet som innebär att odla i skogsträdgårdar, det vill säga i flerskiktade planteringar av ätbara och användbara träd, buskar, perenner och marktäckare av skiftande höjd är ännu relativt obeprövad i zon 3  och kallare men har potential såväl för intresserade trädgårdsägare som för skolor och i annan pedagogisk och rekreativ verksamhet. Min förhoppning att  växtlistorna  underlättar för den som vill påbörja ett planteringsförsök, så väl i liten som i större skala.

  • 477.
    Amunarriz Ollokiegi, Endika
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Electric heated windows: thermal comfort and energy use aspects2013Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 478.
    Amundsen, Nicklas
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    The Possibilities and Limitations of Teaching Through Multi User Virtual Environments2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The use of computers has grown immensely in the last decades and the possibility to teach through them has grown as well. Various computer applications, games and forums have been created as tools of teaching and learning. This research project contains a summary of various works created within the E-learning area and their results. The virtual world Second Life is tested and some of the research in the literature review will be visited and examined. The research focuses on the feasibility to create scenarios for nursing students to practice patient care and handling, in addition to collaborative qualities that online virtual worlds offer. The conclusion taken from this research is that the possibilities far outweigh the limitations and that learning through virtual worlds should be further explored and developed.

  • 479.
    Amundsson, Ulrika
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Larsson, Sofi
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Psykisk ohälsa bland ungdomar i Sverige2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syfte: Att beskriva vilka faktorer som bidrar till psykisk ohälsa bland ungdomar i Sverige.

    Metod: Litteraturstudie med en deskriptiv design. Studien är baserad på 14 vetenskapliga artiklar sökt i databaserna "PubMed" och "Cinahl".

    Resultat: Det visade sig i resultatet att skilda föräldrar är en stor bidragande faktor till ungdomars psykiska ohälsa. Ungdomar som lever med skilda föräldrar har en större risk att drabbas av depression, ångest och att börja utöva negativa beteenden som rökning, dricka alkohol och tidig sexdebut. Andra faktorer som bidrar till psykisk ohälsa var fetma hos ungdomar och låg socioekonomisk status hos föräldrar.

    Slutsats: Resultatet i föreliggande studie visade att ungdomar som lever med skilda föräldrar är en stark bidragande faktor till ungdomars psykiska ohälsa. Även fetma hos ungdomarna och dålig socioekonomisk status hos föräldrar kan leda till psykisk ohälsa hos ungdomar. Författarna till föreliggande studie önskar att riktlinjer utvecklas så att sjuksköterskan och andra professioner inom vården lättare ska fånga upp de ungdomar som lider av psykisk ohälsa, genom att ha dessa faktorer i åtanke. Ytterligare forskning inom området bör utföras för att få en tydligare bild av hur familjeförhållanden påverkar den psykiska ohälsan hos ungdomar i Sverige.

  • 480.
    Anadol, Fadime
    et al.
    University of Gävle, Department of Business Administration and Economics.
    Frost/Nylén, Ingela
    University of Gävle, Department of Business Administration and Economics.
    Hållbarhetsredovisning ur ett institutionellt perspektiv2007Independent thesis Advanced level (degree of Magister), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Hållbar utveckling har i dagens samhälle blivit ett etablerat begrepp. Både politikerna och allmänheten arbetar aktivt för att uppnå hållbar utveckling i världen.

    I och med att samhällets intresse för en hållbar samhällsutveckling ökar har det lett till att företagen mer och mer börjat engagera sig för en hållbar verksamhetsutveckling där man försöker ta ett socialt ansvar. Intressenterna till företagen kräver att företagen redovisar mer relevant information när det gäller hållbar affärsutveckling. Denna typ av redovisning kallas för hållbarhetsredovisning.

    Hållbarhetsredovisning är av ett globalt intresse men vi har valt att avgränsa studien till att utifrån den institutionella teorin belysa vad som påverkar utvecklingen av hållbarhetsredovisningen i Sverige.

    Denna studie visar att de tre pelarna reglerande, kognitiva och normativa i den institutionella teorin gemensamt bidrar till utvecklingen av hållbarhetsredovisningen. Detta kan vi se genom att det har uppstått regelverk, riktlinjer som har påskyndat och påverkat våra värderingar, normer angående hållbarhet och hållbarhetsredovisningar.

    Det finns ett flertal riktlinjer, lagar, rekommendationer och förslag angående hållbarhetsredovisningar som olika organisationer har utvecklat. De riktlinjer som finns beträffande hållbarhetsredovisningar som har upprättats utav olika organisationer är bland annat GRI: s riktlinjer, DJSI, ISO 14001, EMAS och SA 8000.

    I Sveriges rikes lag finns det reglerat i miljöbalken vilka regler som gäller angående vår miljö. I FAR: s samlingsvolym finner man lagar och rekommendationer om hur hållbarhetsredovisningar ska utföras och granskas.

    I årsredovisningslagens sjätte kapitel framkommer det vilka upplysningar om hållbarhet som ett företag bör lämna i förvaltningsberättelsen.

    Hållbarhetsredovisningen är ett sätt för företag att legitimera sin verksamhet. Företagen kan på så sätt förbättra trovärdigheten genom att framföra detta i rapporter till intressenterna om hur de agerar i ekonomiska-, sociala- och miljömässigafrågor. En faktor som driver på denna utveckling är att intressenterna kräver information utöver den finansiella redovisningen.

  • 481.
    Anastasopoulou, Kyriaki
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Creation of a Low Energy Building with the help of Energy Simulation2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this Thesis Project, the creation of a Low Energy building was examined in order to investigate how complex was to select the suitable parameters and systems of the dwelling, aiming to achieve the lowest possible energy consumption in one year period. All the technologies implemented into the system intended to be as energy efficient and profitable as possible. Another objective of this study was also to present the potential of the system to produce a part of the consumed energy, through renewable energy sources, approaching by this way also the standards of a Zero Energy Building. Firstly, the floor plan of the 150 m2 detached house, was drawn in the designing program AutoCAD. In continuation, this 2D floor plan was imported into the simulation program as well as all the initial input data so as for the Base model of the building to be created For the analysis of the building, the Simulation Program IDA ICE 4.7 was used. Gradually, alternations and adjustments were made into the Base model. Different models were created planning to analyze their results and conclude to the proper solution. All the simulations run for one year time period in order to present the total energy usage, system’s losses and demands in each case. In addition, as for the current study, the location of the construction was Athens, all building’s characteristics were chosen to comply with the Greek Regulation for Low Energy Buildings. Finally, through the procedure followed after having accomplished a series of simulations, the final annually energy demands managed to be within the required limits.

  • 482.
    Anavberokhai, Isah
    University of Gävle, Department of Technology and Built Environment.
    Introducing GIS and Multi-criteria analysis in road path planning process in Nigeria: A case study of Lokoja, Kogi State2008Independent thesis Advanced level (degree of Magister), 15 points / 22,5 hpStudent thesis
    Abstract [en]

    In planning a suitable road network, planners put into consideration factors like gradients or slope of the area, available land-use and soil type, community or national landmarks and governmental interest. These different considerations and interest make the planning process complex and as such there might be confusion of interest in the decision making. The use of GIS and Multi-criteria analysis has helped planners to achieve desired and more accurate results and as such reducing the complex nature in the planning process allowing different stakeholders to reach a general conclusion.

    Multi-criteria analysis (MCA) prevents the imposition of limit on the form of criteria and gives opportunity to decision makers to enter their own judgments. This provides a better communication among the decision makers and the entire community and as such creating a more open choice for analysis and possible changes if necessary. The aim of this thesis is to introduce the possibility of using GIS and MCA in road path planning in Nigeria, using Lokoja, the capital of Kogi state as a case study.

    In actualizing the aim, satellite images of the area of study was obtained from the Landsat home page and analyzed to derive the land-use map. The land-use over the area of study was classified into five different classes using the unsupervised method of classification. A DEM over the area of study was downloaded from the website of the Consortium of Spatial information (CSI) and the DEM was used to derive the slope map over the area of study and the analytic hierarchy process (AHP) method was used in weighting the criterions according to preference.

    As the conclusion of the analysis, a road path between two points was obtained. The start point of the road was located on an approximate coordinate of 219002, 958986 meters and the destination point on an approximate coordinate of 320322, 878101 meters. The start and destination point were selected randomly without any pre-knowledge of the area. The thesis has succeeded in showing that it is possible to determine a road path between two points using Geographic information system (GIS) and Multi-criteria analysis in Nigeria.

  • 483.
    Anavberokhai, Isah
    University of Gävle, Department of Technology and Built Environment.
    Mapping land-use in north-western Nigeria (Case study of Dutse)2007Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    This project analyzes satellite images from 1976, 1985 and 2000 of Dutse, Jigawa state, in north-western Nigeria. The analyzed satellite images were used to determine land-use and vegetation changes that have occurred in the land-use from 1976 to 2000 will help recommend possible planning measures in order to protect the vegetation from further deterioration.

    Studying land-use change in north-western Nigeria is essential for analyzing various ecological and developmental consequences over time. The north-western region of Nigeria is of great environmental and economic importance having land cover rich in agricultural production and livestock grazing. The increase of population over time has affected the land-use and hence agricultural and livestock production.

    On completion of this project, the possible land use changes that have taken place in Dutse will be analyzed for future recommendation. The use of supervised classification and change detection of satellite images have produced an economic way to quantify different types of landuse and changes that has occurred over time.

    The percentage difference in land-use between 1976 and 2000 was 37%, which is considered to be high land-use change within the period of study. The result in this project is being used to propose planning strategies that could help in planning sustainable land-use and diversity in Dutse.

  • 484.
    Anavberokhai, Isah O.
    University of Gävle, Department of Technology and Built Environment.
    Environmental Aspects Review: A Case Study of Two Sawmills in Etsako-West, Edo State Nigeria2008Independent thesis Advanced level (degree of Magister), 10 points / 15 hpStudent thesis
    Abstract [en]

    The forests are essential for healthy environment. Trees which are part of the

    forest help to stabilize the forest soil, improve soil fertility, reduce the velocity of

    wind, protect watershed and reduce the amount of carbon released into the

    atmosphere. Many industries use trees as raw materials and in most cases impact

    the environment, but there are great differences in the impact they make. There is

    a need therefore to continually evaluate the operational activities of these

    industries to ensure that the environment is protected. The use of environmental

    management systems like ISO and EMAS standards has helped in the evaluation

    of organizations and industries.

    In this thesis, two sawmills Iretunde and Irepodun in Etsako-West local

    government area Edo state Nigeria were evaluated with the aim to determine their

    operational activities and how the environment is being affected by them. Subaims

    were to determine the most significant environmental aspects of the sawmill

    and their organizational structure. In actualizing the aim of this thesis, literature

    review, site investigation as well as oral interview of the staff and management of

    both sawmills were conducted. In the evaluation of the environmental aspects, the

    detailed method of environmental impact evaluation by Ammenberg (2004) was

    used were each environmental aspect that was weighted against nine identified

    criteria.

    The result obtained from the environmental aspect evaluation of both sawmills

    shows that the use of raw materials and emissions to air are the most significant

    environmental aspects. In conclusion, it was observed that the both sawmills are

    well structured and carry out their operational activities effectively. Neither of

    them has registered under any environmental management system but there is a

    need for them to do so in order to help check their operational activities in order to

    reduce their environmental impact.

  • 485.
    Andarea, Jackline
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Örnblom, Jeanette
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Föräldrars upplevelser av att leva med ett barn 0–13 år, med diabetes typ 1.: En litteraturstudie2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Today live about 450 000 people with diabetes in Sweden and it makes the disease one of the major diseases. Diabetes mellitus type 1 is a chronic autoimmune disease primarily affects young people. In Sweden live about 7000 children with the disease and fall ill every year approximately 700 children under 15 years. This makes the disease one of the most common chronic diseases in children in Sweden.

    Aims: The purpose of this study was to describe parents' experience of living with a child (0-13 years) with type 1 diabetes mellitus and to describe the data collection methods of the included articles.

    Methods: A descriptive literature study, which included 11 scientific articles, nine articles of qualitative approach, one quantitative and one mixed study. These were analyzed objectively by both authors. The searches took place in PubMed and Cinahl.

    Results: The results show that parents experienced stress and life adjustment when child get diabetes. They felt a sense of worry and they found it difficult to assign responsibility to someone else. Support and information perceived as flawed in different situations, but a healthcare team or a mentor perceived as positive. Data collection methods in the included articles were mostly interviews except one who applied the questionnaire.

    Conclusions: Parents experienced constant worry, lack of support and information. With the right support and information would reduce parents' anxiety and it could also strengthen the child's self-care ability.

  • 486.
    Ander, Bodil
    University of Gävle, Faculty of Education and Business Studies, Department of Educational sciences.
    Samarbetsförmåga, från lagidrott till arbetsplats: en intervjustudie2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Samarbete är något som alltid behövs när en grupp vill nå samma mål. Syftet med denna uppsats är att undersöka om individer som är aktiva inom lagidrott upplever att de utvecklar en samarbetsförmåga inom idrotten som de kan ha användning av i arbetslivet. Fem informanter som är aktiva inom lagidrott och har ett arbete som sin huvudsyssla har intervjuats. Resultatet visar att informanterna tyckte att lagidrott utvecklar samarbetsförmåga och att samarbetet fungerar på ett likartat sätt inom lagidrotten och på arbetsplatsen. Att lära känna varandra i en annan miljö var en viktig faktor för att förbättra samarbetet både inom lagidrotten och på arbetsplatsen. De ansåg också att ett bra samarbete generellt sett bestod av att kommunicera med varandra, ha en positiv attityd, vara ärlig och öppen.

  • 487.
    Andersas, Lisa
    et al.
    University of Gävle, Faculty of Health and Occupational Studies, Department of Social Work and Psychology.
    Engholm, Malin
    University of Gävle, Faculty of Health and Occupational Studies, Department of Social Work and Psychology.
    Hedersbrottslighetens ideala offer: En kvantitativ genomgång av polisens utredningar av brott med hederskaraktär2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    "The ideal victims of honour-related crime"

    The purpose of this study is to examine if characteristics of victim and perpetrator and circumstances involving the crime, which are described in the theory of "the ideal victim", have an influence on the outcome of police employee’s independent assessment on crimes of honour character. In order to examine this a quantitative method has been applied and a logistic regression has been made of data based on identified crimes whit honour as a motive. The results of the study have shown that eleven variables which has a connection to characteristics and circumstances involving the crime and the investigation, as gender, age and circumstances surrounding reporting the crime, have a significant influence on the outcome. The study’s main conclusion is that no clear connection can be drawn between the outcome of assessments on crimes with an honour motive and the perception of the ideal victim.

  • 488.
    Andersen, Caroline
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Eneqvist, Maria
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Lägesrapport för integrerad rapportering: En kartläggning av 14 stora svenska företag2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Aim: Sustainability reporting is considered to have problems with a disconnection of financial and non-financial strategies, which IR intends to solve. Previous studies show that IR has been implemented disproportionately, and that the reports referred to as integrated, demonstrated a low IR-level. A possible explanation is a poor understanding of the relatively new concept. Large differences in the IR-level makes it difficult to get a clear picture of the actual implementation of IR. The purpose of this study is to identify the IR-level of large Swedish companies who self-declared their reports as integrated, and to provide practical examples on the basis of the IR framework. Finally, legitimacy theory and greenwashing is used to explain the results.

    Method: The process of the study has been abductive, and a qualitative strategy has been adopted. The design of the study is cross-sectional. The empirical data were collected through qualitative content analysis of 14 Swedish companies’ annual reports, selected through a purposive sample. Subsequently, data was acquired and analyzed using a coding frame, based on the normative framework. The data have been presented in tables and in narratives.

    Result & Conclusions: The study has shown that the companies indicate an uneven IR level, where companies have been most successful in strategic focus and future orientation, while a lower level is achieved within materiality and connectivity of information. This may be due to inadequate diffusion of the IR framework and/or due to greenwashing. The mapping thus shows that most reports are mixed rather than integrated.

    Suggestions for future research: To capture whether the transformation function is part of the companies’ IR, a qualitative case study of individual companies is proposed. Furthermore, a longitudinal study to see how the companies IR-level changes over time would be interesting.

    Contribution of the thesis: The most important contribution of the study is that the mapping provides practical examples for companies to consider, as well as filling the knowledge gap existing regarding the implementation of IR in Swedish companies.

  • 489.
    Andersen, Cecilia
    et al.
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Lindquist, Emilia
    University of Gävle, Faculty of Education and Business Studies, Department of Business and Economic Studies.
    Styr lagen etiken?: En studie om etikens betydelse för kontroversiella företag2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Title: Does the law control the ethics? – A study about the meaning of ethics for controversial companies.

    Level: Bachelor thesis in Business economics.

    Authors: Cecilia Andersen and Emilia Lindquist.

    Supervisor: Agneta Sundström.

    Date: 2014-05.

    Aim: The aim of this thesis is to create an understanding of how controversial companies can utilize ethical marketing to enhance their legitimacy in relation to their stakeholders.

    Method: For the aim of this study, a qualitative research approach has been used. The empirical data was compiled through nine semi-structured interviews that were carried out at three different companies, all of which are active in the alcohol industry. Thereafter, the material was scrutinized using a meaning-analysis to more easily find similarities and discrepancies.

    Result and conclusion: The law plays a crucial part in the ethical work and determines how ethical the companies are. The respondents in this study are of the perception that by showing that they do follow the law, the legitimacy is automatically reinforced.

    Contribution: Provides an improved understanding of how companies can exploit ethical marketing to increase legitimacy. In this regard, ethical codes are something to endeavor, in terms of doing more that what is required by law.

    Future research: A suggestion for further research is to investigate which impact corporate marketing of alcohol has on consumers. A second proposal is to examine the actual ethics of marketing in small businesses operating in the alcohol industry.

  • 490.
    Andersen, Niklas
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
    Wind Turbine End of Life: Characterisation of Waste Material2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Wind power is growing fast all over the world, and in Sweden alone thousands of turbines has been installed the last few decades. Although the number of decommissioned turbines so far is very low, the rapid installation rate indicates that a similar rapid decommissioning rate is to be expected shortly. If the waste material from these turbines is not handled sustainably the whole concept of wind power as a clean energy alternative is challenged.

    This study aims to present an accurate estimate of the amounts of waste material that will be generated from wind turbines in Sweden during the coming decades, allowing the waste management industry to plan for this and by extension prevent unnecessary energy losses through imperfect waste treatment. It should also present helpful information on how problematic waste can be reduced or avoided.

    VindStat’s annual report, presenting installation date and other relevant data for most installed turbines in Sweden, has been used as the base for the calculations. Information on material composition in different types and sizes of wind turbines has been extracted from various life cycle assessments, and by using the available parameters in the data base each turbine has been assigned a specific amount of steel, iron, copper, aluminum, blade material and electronics. An average life time of 20 years has been assumed, based on prior research and comparison with empiric data, and the material of each turbine is therefore seen as generated waste 20 years after installation date.

    To calculate the amount of waste material from replacing faulty components, empiric data over replacement rates in further developed markets has been combined with a prognosis over future development of installed wind capacity in Sweden based on a method described by prior research. As no sufficient way to predict how the future second hand market for turbines and components has been found, three different possible scenarios have been investigated to see how this may affect waste amounts.

    The results show that annual waste will grow slowly at about 12 % increase per year until around 2026, and then the average increase is 41 % per year until 2034. By then, annual waste amounts are estimated to have reached 237 600 tonne steel and iron (16 % of currently recycled amounts), 2 300 tonne aluminium (4 %), 3 300 tonne copper (5 %), 343 tonne electronics (<1 %) and 28 100 tonne blade material. There is no industrial scale recycling method for commonly used blade materials, and a high strength steel developed by Sandvik is proposed as a fully recyclable material to consider for further research. A well-functioning second hand market is shown to possibly have a major impact on waste amounts, at least in postponing it until better recycling systems are in place.

  • 491.
    Andersen, Niklas
    et al.
    Energi Funktion Komfort Skandinavien AB, Nacka, Sweden.
    Eriksson, Ola
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental engineering.
    Hillman, Karl
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental engineering.
    Wallhagen, Marita
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental engineering.
    Wind turbines’ end-of-life: Quantification and characterisation of future waste materials on a national level2016In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 9, no 12, article id 999Article in journal (Refereed)
    Abstract [en]

    Globally, wind power is growing fast and in Sweden alone more than 3000 turbines have been installed since the mid-1990s. Although the number of decommissioned turbines so far is few, the high installation rate suggests that a similarly high decommissioning rate can be expected at some point in the future. If the waste material from these turbines is not handled sustainably the whole concept of wind power as a clean energy alternative is challenged. This study presents a generally applicable method and quantification based on statistics of the waste amounts from wind turbines in Sweden. The expected annual mean growth is 12% until 2026, followed by a mean increase of 41% until 2034. By then, annual waste amounts are estimated to 240,000 tonnes steel and iron (16% of currently recycled materials), 2300 tonnes aluminium (4%), 3300 tonnes copper (5%), 340 tonnes electronics (<1%) and 28,000 tonnes blade materials (barely recycled today). Three studied scenarios suggest that a well-functioning market for re-use may postpone the effects of these waste amounts until improved recycling systems are in place.

  • 492.
    Andersen, O.
    et al.
    Ericsson AB.
    Wisell, David
    Ericsson AB.
    Keskitalo, Niclas
    University of Gävle, Center for RF Measurement Technologies. University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för elektronik.
    Measurement of ACLR with high dynamic range2008In: IEEE MTT-S International Microwave Symposium Digest, Atlanta, GA, 2008, p. 273-277Conference paper (Other academic)
    Abstract [en]

    In this paper a method to overcome the insufficient dynamic range of RF measurement instruments, i.e. signal generators and spectrum analyzers, for distortion measurements on feedforward and other highly linear amplifiers, is discussed. A circuit board is designed, built and verified. Its performance is found to be superior to traditional methods using filters, both from a technical performance and flexibility standpoint as well as from an economic view. ACLR measurements for WCDMA signals can be done well below -70 dBc using the produced circuit board. © 2008 IEEE.

  • 493.
    Andersen, Olav
    et al.
    Ericsson.
    Björsell, Niclas
    University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för elektronik. University of Gävle, Center for RF Measurement Technologies.
    Keskitalo, Niclas
    University of Gävle, Center for RF Measurement Technologies. University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för elektronik.
    A Test-Bed Designed to Utilize Zhu’s General Sampling Theorem to Characterize Power Amplifiers2009In: Instrumentation and measurement technology conference 2009 I2MTC '09 IEEE, Singapore, 2009, p. 201-204Conference paper (Refereed)
    Abstract [en]

    Characterizing power amplifiers require test set-ups with performance superior to the power amplifiers. A commonly used method is to use an IQ-demodulator. However, problem arises due to imperfections in the demodulator such as IQ-imbalance; an alternative method is to use a direct down converter to intermediate frequency. The drawback then is the limited bandwidth. However, the required bandwidth of the ADC does not need to be exceptional. According to Zhu’s general sampling theorem is it enough to sample the output signal at the Nyquist rate of the input. However, even though the required sampling rate is reduced the demands on the analog bandwidth remains. Unfortunately, commercially available instruments such as vector signal analyzers can not be used for this purpose since their analog bandwidth is too small. In this paper a test-bed is designed to utilize the Zhu’s general sampling theorem. The RF front-end has frequency range of 500 MHz – 2.7 GHz and a bandwidth of 1 GHz. All performance data are verified with measurements.

  • 494.
    Andersen, Olav
    et al.
    Ericsson AB, Gävle Sweden.
    Wisell, David
    Ericsson AB, Gävle, Sweden.
    Keskitalo, Niclas
    Ericsson AB, Gävle, Sweden.
    Stenvard, Patrik
    Ericsson AB, Gävle, Sweden.
    Cost effective high performance modular instrumentation, signal generation and signal analysis for future mobile communication systems2007In: 2007 IEEE Autotestcon: proceedings. Vol. 1 AND 2, 2007, p. 660-668Conference paper (Refereed)
    Abstract [en]

    A decrease in life cycle cost is a key issue for testing of mobile communication systems. The rapid development and edge technology requires high performance instruments and state of the art measurement technology. It is desired to use virtual/synthetic instruments and put the measurement technology in software independent of hardware, i.e. software driven measurements. Increased flexibility and modularization, both in hardware and software, are requirements to support the cost decrease. The hardware basis is signal generation and signal analysis.

    In this paper state of the art signal generation and signal analysis capabilities are demonstrated in a modular and flexible architecture. A direct IF synthesis is used to generate 1 WideBand Code-Division Multiple Access (WCDMA) carrier with more than 72 dB Adjacent Carrier Leakage Ratio (ACLR) 2 carrier with more than 68 dBc ACLR over a total bandwidth of 100 MHz. The signal analysis capabilities, ACLR performance, for a WCDMA carrier is better than -70 dBc and for a continuous wave better than -85 dBc over a bandwidth of 42.5 MHz. The critical down converter in the set up doesn’t degrade the performance.

  • 495.
    Andersen, Olav
    et al.
    Ericsson Telecom AB, Gävle, Sweden.
    Wisell, David
    Ericsson Telecom AB, Stockholm, Sweden.
    Staenvard, Patrik
    Ericsson Telecom AB, Gävle, Sweden.
    Keskitalo, Niclas
    University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för elektronik. University of Gävle, Center for RF Measurement Technologies.
    Extending the Bandwidth and Dynamic Range of Old RF Instruments to Meet State-of-the-Art Performance, Using a Synthetic Instrument Approach2009In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 58, no 2, p. 248-254Article in journal (Refereed)
    Abstract [en]

    A decrease in life cycle cost is a key issue for testing mobile communication systems. The rapid development and edge technology requires high-performance instruments and state-of-the-art measurement technology. New investments are expensive, but even older generation instruments are capable of extending their bandwidth and dynamic range to meet even the latest Third-Generation Partnership Project (3GPP) cellular measurement requirements by the addition of external hardware using a synthetic instrument approach. The novelty of this paper is the high performance on the most crucial parameters, i.e., the dynamic range and bandwidth achieved by only replacing some parts of the legacy instrument. Moreover, the demonstrated direct IF synthesis has a high degree of novelty at wide modulation bandwidths. It is desired to use virtual/synthetic instruments and make the signal processing in the software independent of the hardware, i.e., software-defined measurements (SDMs). In this paper, a state-of-the-art experimental setup for signal generation and signal analysis is demonstrated. A direct IF synthesis is used to generate a wideband code-division multiple-access (WCDMA) carrier with more than 72-dB adjacent carrier leakage ratio (ACLR) up to 12 parallel carriers with more than 68-dBc ACLR over a total bandwidth of 100 MHz. The signal analysis capabilities (e.g., ACLR performance) for a WCDMA carrier is better than -70 dBc and for a continuous wave better than -85 dBc over a bandwidth of 42.5 MHz. The critical RF downconverter in the setup is carefully designed not to degrade the dynamic range performance.

  • 496.
    Andersin, Mira
    University of Gävle, Faculty of Education and Business Studies, Department of Humanities.
    Den manliga hjälten och de döda kvinnorna: En analys av I am legend ur ett genusmedvetet och feministiskt perspektiv2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med uppsatsen Den manliga hjälten och de döda kvinnorna är att från ett genusmedvetet och feministiskt perspektiv undersöka genusroller och patriarkala tankestrukturer i Richard Mathesons roman I am legend och de tre filmatiseringar som gjorts av denna. Jag ska se hur män och kvinnor skildras, omverken vidmakthåller de stereotypa könsroller som det västerländska samhället traditionellt bygger på, eller om de bryter av mot dessa normer. I uppsatsen använder jag mig av Pierre Bourdieus teori om den manliga dominansen, och även av Gilbert och Gubars resonemang om kvinnan i litteratur som ängel och monster. Om mannens roll är att vara hjälte, vilken roll får då kvinnan?

  • 497.
    Andersmats, Edvin
    et al.
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Tapper, Dennis
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
    Team Foundation Server 2010: En utvärdering av mätetal för projektkvalitet2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    På Trafikverkets centrala funktion IT används Team Foundation Server 2010 för projekthantering. Utifrån detta system det är det möjligt att få fram mätetal som visar information om olika projekt. I denna fallstudie undersöks, med hjälp av intervjuer, vilka av dessa mätetal som kan användas för att visa en relevant bild av kvaliteten på ett systemutvecklingsprojekt. En modell presenteras för hur olika mätetal skulle kunna vägas samman för att fungera som en siffra på ett projekts kvalitet/hälsa. Till sist utvärderas om mätetal från TFS är tillräckliga för att ge en bra bild av kvaliteten på ett systemutvecklings-projekt. Studien kommer fram till att en sammanvägning är möjlig, men kan vara omfattande. Den visar även att mätetal från TFS är tillräckliga för att ge en övergripande bild av ett projekts hälsa.

  • 498.
    Andersson, Adam
    University of Gävle, Faculty of Education and Business Studies, Department of Humanities.
    Ett sverigedemokratiskt språk: En innehållsanalys av Sverigedemokraternas partiprogram och partitidning2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 499.
    Andersson, Alexandra
    University of Gävle, Faculty of Health and Occupational Studies, Department of Health and Caring Sciences.
    Den stickrädda patienten2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Studies show that about 10% of the world population suffer from needle fear. Consequences for the person with this phobia who knows needle fear is anxiety and avoidance of medical procedures involving injections. This can lead to health problems for the individual and in the worst case lead to the person avoiding all healthcare. It is important that the nurse has knowledge of the factors that can lead to needle fear and what the nursing interventions that can alleviate the suffering of the patient.

    Aim: The purpose of this study was to highlight nurses nursing care measures required to preclude the fear of needles in children. The aim was also to describe the selection groups in the included articles.

    Method: A literature review in which the results of the 12 articles reviewed, analyzed and compiled. Searches were conducted in PubMed, CINAHL and PsycINFO.

    Main Results: The result showed that the environment's design is important as children get injections, and how well the child was prepared for needle insertion. The result showed that even small children have the opportunity to benefit from training on needle insertion procedures. Adjusting the time it takes for a baby and a toddler to adapt must be allowed to steer healthcare. Distraction was used as a method before the needle insertion but that the best were of distraction was not needed.

    Conclusions: The environment´s design is important as children get injections and nurse can reduce the feeling of a hospital or clinic by adapting the environment and provide for distracting toys. It is important that children know what would happen at the needle insertion procedure and even smaller children can benefit from education about needle injection procedures and understand the importance of them. The nurse can by adjusting the session time for the child's needs and validate the child's feelings reduce anxiety and fear of the needle fearing children.

  • 500.
    Andersson, Anna
    University of Gävle, Department of Caring Sciences and Sociology.
    BVC-sjuksköterskans arbete: att alltid utgå från barnets bästa2009Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of the study was to describe how child health care nurses (CHCN) experienced their work with regard to give support to parents, the content of the work as well as their thoughts concerning developing the support to parents. The study had a descriptive design where ten CHCN from different healthcarecentres in the central part of Sweden were interviewed. The collected material was transcribed and analyzed using qualitative content analysis. The result was presented under the theme to do what is the best for the child, categories and subcategories. In the category conditions and attitudes the CHCN described how they viewed the situation from the child´s point of view, created a confidence, were available, prepared and understanding. The CHCN addressed that the content of the parental support was to identify and make assessments, support parents and give advice, protect the child, cooperate and coordinate and give out information. Positive experiences the CHCN mentioned was to connect with the parents and children, to get positive feedback, the job situation and the feeling of meaningfulness. Difficult situations in their work was to meet children that were abused, parents who were hard to reach, insufficient attachment between mother and child, when reports needed to be made, illness or death, personal obstacles and lack of resources. Improvement areas identified by the CHCN were related to the nature of the parental support provided, resources as well as the level of personal education.

     

     

     

    Keywords: Child health care nurses, parental support, children, experiences

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