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  • 51.
    Acka, Germain Kofi
    et al.
    Blekinge Institute of Technology, School of Management.
    Ntsiful, Samuel
    Blekinge Institute of Technology, School of Management.
    Odorh, Obinna
    Blekinge Institute of Technology, School of Management.
    CUSTOMERS’ ADOPTION BEHAVIOUR IN INTERNET BANKING: A COMPARATIVE ANALYSIS OF GHANA AND SWEDEN2010Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Internet banking has now become a global phenomenon. It is the fastest growing service that banks can offer in order to gain and retain new customers. However, the issue of adoption behaviour or pattern by final consumers seems to be a pivotal issue in the successful implementation of Internet banking which has benefited people from jurisdiction to jurisdiction and from country to country. In some countries, Internet banking has proven to be very reliable, effective and efficient whilst in some others, they are found to be extremely dormant due to adoption behaviour. This study therefore tried to investigate if there are differences in Internet banking adoption behaviour between Ghana and Sweden. One bank each from Ghana and Sweden was selected for this study. The study employed the theory of the Extended Technology Acceptance Model by Davis and Venkatesh (2000). This model looks at the individual Perceived Usefulness, Perceived Ease of Use and Psychological Attachment of adoption. These three parameters of the theory lead to Behavioural Intention which has a positive correlation with actual usage. The study was based on both qualitative and quantitative approaches and questionnaires were administered to some selected Internet banking customers of the two banks using purposive sampling technique. In the same vein, one banking staff each from the two banks knowledgeable in the Internet banking system of their banks was interviewed. The study concludes that there is only a marginal or subtle difference in the adoption behaviour in Internet banking between Ghana and Sweden and that the low patronage of Internet banking in Ghana as compared to that of Sweden is due to reasons other than customers’ adoption behaviour.

  • 52.
    Ackah, John
    et al.
    Blekinge Institute of Technology, School of Management.
    Vuvor, Sylvester
    Blekinge Institute of Technology, School of Management.
    The Challenges faced by Small & Medium Enterprises (SMEs) in Obtaining Credit in Ghana.2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This study, The Challenges faced by Small and Medium Enterprises in Obtaining Credit in Ghana, was undertaken to highlight the issues facing SMEs in Ghana in their quest to accessing bank credit (loans) from financial institutions (banks & non– banks) to undertake various activities; be it general business operations or carrying out expansion project all in the name of fulfilling the objectives as being job creators and helping to reduce poverty. In tackling this topic, the quantitative approach was adopted. Questionnaires were circulated to 80 SMEs in the Accra and Tema metropolis selected through a technique of convenience sampling. Based on the responses received through these questionnaires, the following major findings came to the fore. There are institutions such as bank and non-bank financial institutions that are willing to provide funds to SMEs but Ghanaian SMEs are not able to meet the requirements of these financial institutions. Chief among these requirements is the issue of collateral, which most SMEs cannot provide. Aside this is the other issue of small equity base of these SMEs among others. Secondly, those who are able to access this credit are also faced with high interest rates and short repayment periods making it very difficult to embark on any developmental or expansion projects. Another interesting revelation with regards to the high rate of defaults in repayment of loans contracted, relates to the tight Cash flow situations of these SMEs that is mostly due to difficulties in the management of the account receivables of the respective SMEs surveyed. The study concludes with some recommendations to help free up capital or credit to the SME sector. Among the recommendations are encouraging financial institutions (banks & non-banks) to establish factoring services, enforcement of the credit reporting act and finally provision of tax incentives for banks that lend to SMEs to encourage others to do same.

  • 53.
    Aco, Dekan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Tillverkningsekonomisk utvärdering av återvinning och återanvändning av blyfri mässing2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis is part of a larger project (Evochip), conducted at Lund University, faculty of engineering, Industrial Production Department (iProd). The project is in collaboration with AB Markaryds metallarmatur and Mistra innovation. In this work, a dynamic cost model has been developed to calculate the manufacturing costs of components made from recycled chips of lead-free brass from the manufacturing processes of AB Markaryds metallarmatur (MMA).

    In the current situation, all rejected details and waste materials are sent to the material supplier in southern Europe for recycling. The transport takes place by trucks and the recycling process is based on an energy-intensive melting step. Development projects are currently underway to reuse the chips without melting at sight at MMA´s facilities, but the cost per detail has been unknown for the company. With the help of this thesis, the manufacturing price will be presented. The manufacturing process is divided into a total of 11 different processing stations. To estimate the costs, Jan-Eric Ståhl's dynamic cost model is used. Necessary data and information have been collected using interviews with the employees of the company and through the company's own documentation regarding the production lines. In order to reduce the error margin in the results, suitable Monte Carlo simulations have been performed.

    The work is also based on a sustainability perspective. In addition to eliminating transportations by trucks and energy-intensive melting processes for the products, the work also promotes the use and reuse of lead-free brass by pressing metal chips to form new bars. All this in order to avoid leaded brass components due to the negative health effects caused by the lead.

    The component investigated in this work is a radiator valve called EVO 10. The valve is found in the company's lead-free standard range. The cost model in this project is dynamic to the extent that it could be applied in the future to other lead-free brass components at MMA.

    A comparison of two different concepts is presented in the results section. Concept one represents the current manufacturing system, and concept two, the future compacting technology. Since many of the processing steps are the same for both systems, a comparison was made between the productions of the pellet through the two different concepts. The results show that pellets made according to today's manufacturing system cost 12.75 SEK / detail, and pellets manufactured according to concept two costs 9.61 SEK / detail.

    As concept two is dependent on chips from today's manufacturing system, MMA cannot completely switch to compacting chips to new pellets. More work must be done to find a balanced model between the two different manufacturing systems for the best possible results.The results from the Monte Carlo-simulations shows that the manufacturing cost with the chosen parameters and variables is 12.96 SEK/detail.

  • 54.
    Acosta, Kerly
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Sangari, Arash
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Webster, Jessica
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Energy Strategies towards Sustainability: a comparative analysis of community energy plans from Sweden and Canada2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This thesis examines community energy planning in Sweden and Canada with the aim of revealing strategies that move communities towards energy sustainability. Unsustainable energy activities are identified as major threats on both local and global levels. The challenges for energy systems are discussed and a possible scenario of a future community with sustainable energy production and consumption is presented. The literature review examines community energy planning guidebooks and key theoretical and methodological concepts including ingenuity, soft energy paths and backcasting from socio-ecological principles of sustainability. Following an analysis of energy supply and demand in a broad systems context, and a review of policies and programs supporting or hindering community energy planning, energy plans from eleven Swedish and eleven Canadian communities are evaluated. Characteristics of progressive energy planning as uncovered in the literature review form a framework for evaluating the visions, strategies and actions described in the plans. Sweden is recognized as an early player in community energy planning. Although Swedish energy plans do not contain all of the identified progressive strategies, national leadership and funding have played a role in Sweden’s successes. More recent Canadian plans are found to be highly progressive, suggesting that Canadian communities who follow their plans can too be successful in transforming their energy systems towards sustainability.

  • 55.
    Acquah-Hagan, Douglas
    et al.
    Blekinge Institute of Technology, School of Management.
    Aggrey-Bosu, Spencer
    Blekinge Institute of Technology, School of Management.
    The impact of the Audit Commission on the management control systems of local authorities: The case of London Borough of Lambeth2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This case study uses qualitative and quantitative analyses to examine the impact of the annual audits undertaken by the Audit Commission (hereafter the AC) at London Borough of Lambeth (LBL) on its management control system (MCS). The analysis reviews the audits undertaken between the years 2000 and 2010 and analyses the management reaction to these results to identify the impact on MCS. The objective of the research was achieved by developing research questions which served as a research framework. The study focused primarily on three research questions: (1) have the audit scores of the AC influenced MCSs at LBL?; (2) how has the audit scores of the annual audits completed by the AC influenced the MCS of LBL?; and (3) why has the audit scores of the annual audits completed by the AC influenced MCS at LBL?. The theoretical framework used in this study focused on three bodies of literature: the work of the Audit Commission, auditing and audits scores, and MCSs. The thesis used content analysis to analyse LBL’s submissions; audit results and recommendations; and improvement plans. Data for the analysis were collected via documentation, archival records, interviews, and direct and participant observation. As a local government authority, LBL receives most of its annual finance from central government to deliver services to local residents and businesses. As a result the central government, through the AC, audits them every year to ensure that they are effective and efficient with their resources. Between the years 2000 and 2004, LBL audit scores were one star out of possible four stars and this represented considerable risk to its continuous survival. It is worth noting that a council with more than three consecutive score of one star is classified as a failing organisation and that council is taken into ‘special measures’ – a situation where the central government takes administrative control of the council. The trend of audit scores at LBL had indicated the council needed to improve in the areas of: • Financial planning and monitoring; • Service performance improvement in areas such as cultural services; • Performance management processes; and • Use of resources and internal capabilities. After the audit recommendation of 2004, the council developed an improvement plan. This led to the implementation of the new financial control systems, performance management procedure and personnel control system. LBL’s performance measurement imitates the balanced scorecard approach developed by Kaplan and Norton (1992). The reactions at LBL are congruent with the findings of Asel (2009) which demonstrated that organisations with high perceived uncertainty are more likely to change their MCS. The research objectives limited the study scope which has opened opportunities for future research in local authorities such as: MCS as a package; the influence of other stakeholder; trade union contribution to MCS; and organisational leadership at local authorities. It is also worth noting that the Department of Communities and Local Government (DCLG) is in a consultation process with an intention to outsource the work of the AC with effect from 2012/13 audits (www.audit-commission.gov.uk).

  • 56.
    Acs, Zoltan J.
    et al.
    London School of Economics and Political Science, GBR.
    Braunerhjelm, Pontus
    Swedish Entrepreneurship Forum, SWE.
    Karlsson, Charlie
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Philippe Aghion: recipient of the 2016 Global Award for Entrepreneurship Research2017In: Small Business Economics, ISSN 0921-898X, E-ISSN 1573-0913, Vol. 48, no 1, p. 1-8Article in journal (Refereed)
    Abstract [en]

    Professor Philippe Aghion is the 2016 recipient of the Global Award for Entrepreneurship Research, consisting of 100,000 Euros and a statuette designed by the internationally renowned Swedish sculptor Carl Milles. He is one of the most influential researchers worldwide in economics in the last couple of decades. His research has advanced our understanding of the relationship between firm-level innovation, entry and exit on the one hand, and productivity and growth on the other. Aghion has thus accomplished to bridge theoretical macroeconomic growth models with a more complete and consistent microeconomic setting. He is one of the founding fathers of the pioneering and original contribution referred to as Schumpeterian growth theory. Philippe Aghion has not only contributed with more sophisticated theoretical models, but also provided empirical evidence regarding the importance of entrepreneurial endeavours for societal prosperity, thereby initiating a more nuanced policy discussion concerning the interdependencies between entrepreneurship, competition, wealth and growth.

  • 57.
    Ada, Ketchie
    et al.
    Blekinge Institute of Technology, School of Engineering.
    Meret, Nehe
    Blekinge Institute of Technology, School of Engineering.
    Hila, Shapira
    Blekinge Institute of Technology, School of Engineering.
    For the Creative Problem-Solver: An Integrated Process of Design Thinking and Strategic Sustainable Development2013Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Since the dawn of humanity design has influenced human life. Today, facing the depletion of the socio-ecological system, increasing complex problems threaten humanity’s existence. Design has been a contributor to creating such problems, yet with appropriate tools can become a source for solutions. Design Thinking (DT) was identified as a possible approach that could contribute to Strategic Sustainable Development (SSD). The purpose of this thesis is to examine potential contributors and hindrances of the DT process with regards to SSD, and create a prototype for an integrated process that could help achieve more strategic and sustainable outcomes. With the use of the Framework for Strategic Sustainable Development (FSSD) as a lens to examine the above, along with interviews, Action Research and expert feedback, an integrated process was created. Results of the interviews and FSSD analysis helped shape two prototypes that were examined through the mentioned methods. It was indicated by participants of the Action Research and by experts that the prototype could help reach a strategic and sustainable outcome, and further refinement should be pursued. The final prototype is presented as part of the discussion, suggesting additional tools and actions that if included could create a possible Sustainable DT (SDT) process.

  • 58.
    ADADE, PORTIA
    et al.
    Blekinge Institute of Technology, School of Management.
    MIREKU., MICHEAL A.
    Blekinge Institute of Technology, School of Management.
    THE RELATIONSHIP BETWEEN LEADERSHIP STYLE AND EMPLOYEES' COMMITMENT: A STUDY OF GHANA OIL PALM DEVELOPMENT COMPANY LIMITED.2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    ABSTRACT In today’s world, there is a lot of focus on the importance of leadership behavior and style to the operations of organizations and at the same time, organizations are struggling to attract and retain talented employees. Even though there are many factors that contribute to employee’s decision to either stay in an organization or not, the main aim of this thesis is to investigate the relationship between leadership style and skilled employees’ commitment. This research identified the leadership styles in Ghana Oil Palm Development Company Limited (G. O.P. D. C. Ltd) through ratings using the adapted Multifactor Leadership Questionnaire, which was formulated from Bass and Avolio (1997), the Full Range Leadership Development Theory and rated the employees’ commitment using an adaptation of Meyer and Allen’s (1997) Three-Component Model of employee commitment. This was enhanced by using semi structured interview to explore the problem further. Eight leaders were rated high for transformational leadership behaviors, six transactional and one leader for laissez-faire. Their employee groups were identified with affective, normative and continuance commitments respectively. Other factors identified as contributing to the skilled employee’s decision to leave or remain in the organization included the stages of their working lives, perceived employment options and their sense of devotion to their organization and family commitments. Overall, findings from this study suggest that leadership behaviors do play important roles in determining commitment within an organization. However, the high turnover rate of skilled employees at GOPDC cannot be attributed only to the style of leadership in the organization. In conclusion, it can be said that leadership behaviours result in different levels of commitment among skilled employees. However, other factors also impact on the decision of skilled employees to either remain or leave an organization.

  • 59.
    Adamala, Szymon
    et al.
    Blekinge Institute of Technology, School of Management.
    Cidrin, Linus
    Blekinge Institute of Technology, School of Management.
    Key Success Factors in Business Intelligence2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Business Intelligence can bring critical capabilities to an organization, but the implementation of such capabilities is often plagued with problems and issues. Why is it that certain projects fail, while others succeed? The theoretical problem and the aim of this thesis is to identify the factors that are present in successful Business Intelligence projects and organize them into a framework of critical success factors. A survey was conducted during the spring of 2011 to collect primary data on Business Intelligence projects. It was directed to a number of different professionals operating in the Business Intelligence field in large enterprises, primarily located in Poland and primarily vendors, but given the similarity of Business Intelligence initiatives across countries and increasing globalization of large enterprises, the conclusions from this thesis may well have relevance and be applicable for projects conducted in other countries. Findings confirm that Business Intelligence projects are wrestling with both technological and nontechnological problems, but the non-technological problems are found to be harder to solve as well as more time consuming than their technological counterparts. The thesis also shows that critical success factors for Business Intelligence projects are different from success factors for IS projects in general and Business Intelligences projects have critical success factors that are unique to the subject matter. Major differences can be predominately found in the non-technological factors, such as the presence of a specific business need to be addressed by the project and a clear vision to guide the project. Results show that successful projects have specific factors present more frequently than nonsuccessful. Such factors with great differences are the type of project funding, business value provided by each iteration of the project and the alignment of the project to a strategic vision for Business Intelligence. Furthermore, the thesis provides a framework of critical success factors that, according to the results of the study, explains 61% of variability of success of projects. Given these findings, managers responsible for introducing Business Intelligence capabilities should focus on a number of non-technological factors to increase the likelihood of project success. Areas which should be given special attention are: making sure that the Business Intelligence solution is built with end users in mind, that the Business Intelligence solution is closely tied to company‟s strategic vision and that the project is properly scoped and prioritized to concentrate on best opportunities first. Keywords: Critical Success Factors, Business Intelligence, Enterprise Data Warehouse Projects, Success Factors Framework, Risk Management

  • 60.
    Adamov, Alexander
    et al.
    Kharkiv Natl Univ Radio Elect, NioGuard Secur Lab, Kharkov, Kharkiv Oblast, Ukraine..
    Carlsson, Anders
    Blekinge Institute of Technology, Faculty of Computing, Department of Communication Systems.
    A Sandboxing Method to Protect Cloud Cyberspace2015In: PROCEEDINGS OF 2015 IEEE EAST-WEST DESIGN & TEST SYMPOSIUM (EWDTS), IEEE Communications Society, 2015Conference paper (Refereed)
    Abstract [en]

    This paper addresses the problem of protecting cloud environments against targeted attacks, which have become a popular mean of gaining access to organization's confidential information and resources of cloud providers. Only in 2015 eleven targeted attacks have been discovered by Kaspersky Lab. One of them - Duqu2 - successfully attacked the Lab itself. In this context, security researchers show rising concern about protecting corporate networks and cloud infrastructure used by large organizations against such type of attacks. This article describes a possibility to apply a sandboxing method within a cloud environment to enforce security perimeter of the cloud.

  • 61.
    Adamov, Alexander
    et al.
    Harkivskij Nacionalnij Universitet Radioelectroniki, UKR.
    Carlsson, Anders
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Cloud incident response model2016In: Proceedings of 2016 IEEE East-West Design and Test Symposium, EWDTS 2016, Institute of Electrical and Electronics Engineers (IEEE), 2016Conference paper (Refereed)
    Abstract [en]

    This paper addresses the problem of incident response in clouds. A conventional incident response model is formulated to be used as a basement for the cloud incident response model. Minimization of incident handling time is considered as a key criterion of the proposed cloud incident response model that can be done at the expense of embedding infrastructure redundancy into the cloud infrastructure represented by Network and Security Controllers and introducing Security Domain for threat analysis and cloud forensics. These architectural changes are discussed and applied within the cloud incident response model. © 2016 IEEE.

  • 62.
    Adamov, Alexander
    et al.
    Kharkiv National University of Radioelectronics, UKR.
    Carlsson, Anders
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    The state of ransomware: Trends and mitigation techniques2017In: Proceedings of 2017 IEEE East-West Design and Test Symposium, EWDTS 2017, Institute of Electrical and Electronics Engineers Inc. , 2017, article id 8110056Conference paper (Refereed)
    Abstract [en]

    This paper contains an analysis of the payload of the popular ransomware for Windows, Android, Linux, and MacOSX platforms. Namely, VaultCrypt (CrypVault), TeslaCrypt, NanoLocker, Trojan-Ransom.Linux.Cryptor, Android Simplelocker, OSX/KeRanger-A, WannaCry, Petya, NotPetya, Cerber, Spora, Serpent ransomware were put under the microscope. A set of characteristics was proposed to be used for the analysis. The purpose of the analysis is generalization of the collected data that describes behavior and design trends of modern ransomware. The objective is to suggest ransomware threat mitigation techniques based on the obtained information. The novelty of the paper is the analysis methodology based on the chosen set of 13 key characteristics that helps to determine similarities and differences thorough the list of ransomware put under analysis. Most of the ransomware samples presented were manually analyzed by the authors eliminating contradictions in descriptions of ransomware behavior published by different malware research laboratories through verification of the payload of the latest versions of ransomware. © 2017 IEEE.

  • 63. Adams, Liz
    et al.
    Börstler, Jürgen
    What It's Like to Participate in an ITiCSE Working Group2011In: ACM SIGCSE Bulletin, Vol. 43, no 1Article in journal (Other academic)
  • 64. Adams, R.
    et al.
    Fincher, S.
    Pears, A.
    Börstler, Jürgen
    Umeå universitet, Institutionen för datavetenskap.
    Bousted, J.
    Dalenius, P.
    Eken, G.
    Heyer, T.
    Jacobsson, A.
    Lindberg, V.
    Molin, B.
    Moström, J.-E.
    Umeå universitet, Institutionen för datavetenskap.
    Wiggberg, M.
    What is the Word for Engineering in Swedish: Swedish Students' Conceptions of their Discipline2007Report (Other academic)
  • 65. Adams, R
    et al.
    Lindberg, Vanja
    What is the word for engineering in Swedish: students conception of their discipline2007Other (Other academic)
    Abstract [en]

    Engineering education in Sweden as in the rest of the world is experiencing a decline in student interest. There are concerns about the ways in which students think about engineering education, why they join an academic programme in engineering, and why they persist in their studies. In this context the aims of the Nationellt ämnesdidaktiskt Centrum för Teknikutbildning i Studenternas Sammanhang project (CeTUSS) is to investigate the student experience and to identify and support a continuing network of interested researchers, as well as in building capacity for disciplinary pedagogic investigation. The Stepping Stones project brings together these interests in a multi-researcher, multi-institutional study that investigates how students and academic staff perceive engineering in Sweden and in Swedish education. The first results of that project are reported here. As this study is situated uniquely in Swedish education, it allows for exploration of a Swedish perspective on conceptions of engineering. The Stepping Stones project was based on a model of research capacity-building previously instantiated in the USA and Australia (Fincher & Tenenberg, 2006).

  • 66.
    Adamsson, Anniqe
    Blekinge Institute of Technology, Faculty of Health Sciences, Department of Health.
    Det förebyggande arbetet mot vårdrelaterade infektioner2015Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Vårdrelaterade infektioner är en stor kostnad för sjukvården och samhället. Det är dock patienterna som drabbas värst. Frågan har uppmärksammats länge och endast små förändring har skett i arbetet mot vårdrelaterade infektioner. Det finns bra underlag för att kunna utföra ett gott arbete kring att minska smitta och smittspridning ändå förblir antalet drabbade oförändrat. Sjuksköterskans roll är att ge god och säker vård med hög kvalitet. Med den kompetens som sjuksköterskan besitter kan denne arbeta mot att vårdrelaterade infektioner fortsätter att öka tillsammans med övrig vårdpersonal.

    Syfte: Syftet med studien var att belysa aspekter som sjuksköterskan i sluten somatisk vård upplever påverkar arbetet i att förebygga vårdrelaterade infektioner.

    Metod: En kvalitativ litteraturstudie baserad på vetenskapliga artiklar med kvalitativ ansats. Analysen gjordes utifrån Granheim och Lundmans tolkning av Kippendorffs innehållsanalys.

    Resultat: I analysen framkom tre kategorier: kunskapsaspekter, beteendemässiga aspekter och miljörelaterade aspekter. Resultatet visade på en rad olika aspekter som sjuksköterskor upplevde påverkade deras arbete i att förebygga vårdrelaterade infektioner. Under analysen framkom att sjuksköterskorna upplevde att det fanns brister i kunskapen om hur det förebyggande arbetet skulle följas. Arbetsmiljön var så pass stressfylld att det var svårt att leva upp till riktlinjerna och samt att de upplevde sig kontrollerade.

    Slutsats: Då vårdrelaterade infektioner idag i sjukvården inte minskar och eftersom det berör alla inom sjukvården, inte minst sjuksköterskan, behövs det ett krafttag kring denna situation. Patienterna utsätts för onödiga risker. Det behövs fördjupad kunskap i var den felaktiga länken är eftersom det förebyggande arbetet inte fungerar. Riktlinjer och lagar finns att tillgå dock är det andra aspekter som påverkar.

  • 67.
    Adapa, Nagaswaroopa
    et al.
    Blekinge Institute of Technology, School of Engineering.
    Bollu, Sravya
    Blekinge Institute of Technology, School of Engineering.
    Performance analysis of different adapative algorithms based on acoustic echo cancellation2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In modern telecommunication systems like hands-free and teleconferencing systems, the problem arise during conversation is the creation of an acoustic echo. This problem degrades the quality of the information signal. All speech processing equipments like noise cancelling headphones and hearing aids should be able to filter different kinds of interfering signals and produce a clear sound to the listener. Currently, echo cancellation is a most interesting and challenging task in any communication system. Echo is the delayed and degraded version of original signal which travels back to its source after several reflections. Eliminating this effect without affecting the original quality of the speech is a challenge of research in present days. Echo cancellation in voice communication is a process of removing the echo to improve the clarity and quality of the voice signals. In our thesis we mainly focused on the acoustic echo cancellation in a closed room using adaptive filters. The Acoustic echo cancellation with adaptive filtering technique will more accurately enhance the speech quality in hands free communication systems. The main aim of using adaptive algorithms for echo cancellation is to achieve higher ERLE at higher rate of convergence with low complexity. The adaptive algorithms NLMS, APA and RLS are implemented using MATLAB. These algorithms are tested with the simulation of echo occurring environment by using constant room dimensions , microphone and source positions. The performance of the NLMS, APA and RLS are evaluated in terms ERLE and misalignment. The results show that RLS algorithm achieve good performance with more computational complexity comparing with the NLMS and APA algorithms. The NLMS algorithm has very low computational complexity comparing to RLS and APA algorithms. The results are taken for both input signal as speech signal and noise separately and plotted in the results section.

  • 68.
    Adapa, Sasank Sai Sujan
    Blekinge Institute of Technology, Faculty of Computing, Department of Communication Systems.
    APPLYING LEAN PRINCIPLES FOR PERFORMANCE ORIENTED SERVICE DESIGN OF VIRTUAL NETWORK FUNCTIONS FOR NFV INFRASTRUCTURE: Concepts of Lean2016Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Context. Network Function Virtualization was recently proposed by European Telecommunications Standards Institute (ETSI) to improve the network service flexibility by virtualization of network services and applications that run on hardware. To virtualize network functions, the software is decoupled from underlying physical hardware. NFV aims to transform industries by reducing capital investments on hardware by using commercial-of-the-shelf (COTS) hardware. NFV makes rapid innovative growth in telecom services through software based service deployment.

    Objectives. This thesis work aims to investigate how business organizations function and the roles in defining a service relationship model. The work also aims to define a service relationship model and to validate it via proof of concept using network function virtualization as a service. For this thesis, we finally apply lean principles for the defined service relationship model to reduce waste and investigate how lean benefits the model to be proven as performance service oriented.

    Methods. The essence of this work is to make a business organization lean by investigating its actions and applying lean principles. To elaborate, this thesis work involves in a research of papers from IEEE, TMF, IETF and Ericsson. It results in modelling of a PoC by following requirement analysis methodology and by applying lean principles to eliminate unnecessary processes which doesn’t add any value.

    Results. The results of the work include a full-fledged service relationship model that include three service levels with roles that can fit in to requirement specifications of NFV infrastructure. The results also show the service levels functionalities and their relationships between the roles. It has also been observed that the services that are needed to be standardized are defined with syntax for ways to describe network functions. It is observed that lean principles benefit the service relationship model from reducing waste factors and hereby providing a PoC which is performance service oriented.

    Conclusions. We conclude that roles defined are fit for the service relationship model designed. Moreover, we conclude that the model can hence contain the flow of service by standardizing the subservices and reducing waste interpreted with lean principles and there is a need for further use case proof of the model in full scale industry trials. It also concludes the ways to describe network functions syntax which follows lean principles that are essential to have them for the sub-services standardization. However, PoC defined can be an assurance to the NFV infrastructure.

  • 69.
    Adawi, Nadja
    et al.
    Blekinge Institute of Technology, School of Health Science.
    Lagerlöf-Ljung, Jesper
    Blekinge Institute of Technology, School of Health Science.
    Kvinnors upplevelser av sjukvårdpersonalens stöd vid bröstcancer: En litteraturstudie2013Student thesis
    Abstract [sv]

    Bakgrund: Bröstcancer är den vanligaste cancerformen bland kvinnor och varje år får cirka 7000 kvinnor diagnosen. En bröstcancerdiagnos kan innebära ett stort hot med starka känslor av oro och ångest samt medföra stora psykiska och fysiska förändringar i livet. För att kunna hantera dessa förändringar behöver kvinnorna stort stöd från sjukvårdspersonalen. Syfte: Syftet med studien var att belysa kvinnors upplevelse av sjukvårdspersonalens stöd vid bröstcancer. Metod: Litteraturstudie med kvalitativ ansats som baserats på åtta vetenskapliga artiklar. Resultat: Efter genomförd analys identifierades två kategorier och sex underkategorier. Kategorierna som framkom var relationellt stöd med underkatergorierna finnas till hands, känsla av ensamhet och känsla av brister i bemötandet från sjukvårdspersonalen samt informativt stöd med underkategorierna saknar information, information lindrar och information som orsakar lidande. Slutsats: Sjukvårdspersonalen utgör en viktig del i arbetet med att stödja kvinnor vid bröstcancer. Genom ökad insikt och förståelse för kvinnors upplevelser av sjukvårdspersonalens stöd kan kvinnors behov tillgodoses på ett bättre sätt. Individanpassat stöd baserat på kvinnors upplevelser kan vara nyckeln till att skapa en bättre vård, där kvinnors personliga behov av stöd tillfredsställs.

  • 70.
    Addu, Raj Kiran
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Communication Systems.
    Potuvardanam, Vinod Kumar
    Blekinge Institute of Technology, Faculty of Computing, Department of Communication Systems.
    Effect of Codec Performance on Video QoE for videos encoded with Xvid, H.264 and WebM/VP82014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In recent years, there has been a significant growth in multimedia services such as mobile video streaming, Video-on-Demand and video conferencing. This has led to the development of various video coding techniques, aiming to deliver high quality video while using available bandwidth efficiently. This upsurge in the usage of video applications has also resulted in making endusers more quality-conscious. In order to meet the users’ expectations, the Quality of Experience (QoE) studies has gained utmost importance from both researchers and service providers. This thesis aims to compare the performance of H.264/AVC, Xvid and WebM/VP8 video codecs in wired and wireless networks. The codec performance is evaluated for different packet loss and delay variation values. The evaluation of codec performance is done using both subjective and objective assessment methods. In subjective assessment method, the evaluation of video codec performance is done using ITU-T recommended Absolute Category Rating (ACR) method. Using this method the perceptual video quality ratings are taken from the users, which are then averaged to obtain Mean Opinion Score. These obtained scores are used to analyze the performance of encoded videos with respect to users’ perception. In addition to subjective assessment method, the quality of encoded video is also measured using objective assessment method. The objective metric SSIM (Structural Similarity) is used to evaluate the performance of encoded videos. Based on the results, it was found that for lower packet loss and delay variation values H.264 showed better results when compared to Xvid and WebM/VP8 whereas, WebM/VP8 outperformed Xvid and H.264 for higher packet loss and delay variation values. On the whole, H.264 and WebM/VP8 performed better than Xvid. It was also found that all three video codecs performed better in wired network when compared to the wireless network.

  • 71.
    Adebomi, OYEKANLU Emmanuel
    et al.
    Blekinge Institute of Technology, School of Computing.
    Mwela, JOHN Samson
    Blekinge Institute of Technology, School of Computing.
    Impact of Packet Losses on the Quality of Video Streaming2010Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In this thesis, the impact of packet losses on the quality of received videos sent across a network that exhibit normal network perturbations such as jitters, delays, packet drops etc has been examined. Dynamic behavior of a normal network has been simulated using Linux and the Network Emulator (NetEm). Peoples’ perceptions on the quality of the received video were used in rating the qualities of several videos with differing speeds. In accordance with ITU’s guideline of using Mean Opinion Scores (MOS), the effects of packet drops were analyzed. Excel and Matlab were used as tools in analyzing the peoples’ opinions which indicates the impacts that different loss rates has on the transmitted videos. Statistical methods used for evaluation of data are mean and variance. We conclude that people have convergence of opinions when losses become extremely high on videos with highly variable scene changes

  • 72.
    Adediran, Oluseun A.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Analytical and Experimental Vibration Analysis of Glass Fibre Reinforced Polymer Composite Beam2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The aim of this work is to investigate analytical and experimental vibration of composite beam. The composite beam is used as composite footbridge model prototype which is assumed. For the dynamic test, hammer excitation is used to excite the beam at fixed locations. The modal parameters are extracted from the time response using a time domain analysis, i.e. the stochastic subspace identification technique. Finite element models for different boundary conditions are constructed using the commercial finite element software package ANSYS for natural frequencies of the beam to support and verify the dynamic measurements. The result obtained from analytical solution, dynamic tests and the FEM are presented and analysed.

  • 73.
    ADEDIRAN, OLUWATOYIN
    et al.
    Blekinge Institute of Technology, School of Management.
    ADEDIRAN, OLUSEUN
    Blekinge Institute of Technology, School of Management.
    TOTAL QUALITY MANAGEMENT: A Test of the Effect of TQM on Performance and Stakeholder Satisfaction2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Title: Total Quality Management: A Test of the Effect of TQM on the Performance and Stakeholder Satisfaction Authors: Adediran Oluwatoyin & Adediran Oluseun Supervisor: Anders Hederstierna Department: School of Management, Blekinge Institute of Technology Course: Master’s thesis in business administration, 15 credits (ECTS). Background and Problem Discussion: The performance of TQM Airlines and Non TQM airlines is measured comparing statistically three major performance indicator Customer satisfaction, Employee satisfaction and Operational effectiveness. To establish a link between TQM and performance and showing the need for the adoption of total quality culture in the local airline sector of the Nigeria aviation industry. Purpose: The purpose of this thesis is to highlight the benefit of TQM implementation in the Nigerian Airline industry by examining the basic principles of TQM in the airlines. The impact of TQM implementation of the three performance indicator will be assessed. Method: Quantitative and qualitative method. Primary data is collected from the airline companies by questionnaires and interview. Secondary data is gotten from articles, journals and online resources. Theory: The theory section looks at different concepts of quality as defined and viewed by various authors. Also the benefits and hindrances of TQM implementation were reviewed. Analysis: We have used a T-test hypothesis to measure the difference in means of TQM airline and Non-TQM airlines using the three performance indicator. Conclusion: The research findings confirmed the benefits that ensue from the implementation of TQM. It showed that TQM is a strategic tool industry can employ in the quest to remain competitive. It was also discovered that for the TQM to be properly implemented, everybody in the organization must be involved from the management to the employees and even the customers.

  • 74.
    Adegboye, Adesola
    et al.
    Blekinge Institute of Technology, School of Management.
    Romlin, Lena
    Blekinge Institute of Technology, School of Management.
    Heavy vehicle B2B marketing and impact of culture: a comparison case study of Volvo and Scania in Thailand2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Many Automobile companies from the developed countries are moving to Asia as the market potential in these countries is dimishing and cost of production is cheaper. Although there is a larger market potential in Asian countries, each automible company needs to attract potential customers with the ultimate goal of retaining them. A case study based on interviews was carried out at Volvo and Scania subsidiaries in Thailand to investigate the role culture play in business-to-business marketing when companies move to a country with a different culture. As the way of work in Thailand and Sweden is different, culture impact is researched in the area of relational marketing, sales forecast and market survey, market segmentation and business marketing communication with focus on the B2B marketing. Finally we perform analysis to identify what is necessary for the companies to adopt in regards to cultural with the aim of retaining and gaining market share. The analysis is based on empirical data collected during interview with employees of the two companies.

  • 75.
    Adeleke, Adesina
    Blekinge Institute of Technology, School of Management.
    How External Forces are influencing the Ebusiness strategy of MTN-Nigeria2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The Internet and e-business has had enormous impact on many companies in Nigeria and there has been much research on how e-business influences the environment, but little can be found on how the environment of a developing country like Nigeria influences e-business. In e-business, technology tells the business what can be done in smarter ways. Technology not only can make business more efficient but also can make business more effective in targeting and reaching markets, however technology cannot enhance business in isolation as there are other vital factors that equally impact business. This thesis presents an adapted version of the PESTEL (Political, Economic, Socio cultural, Technology, Environment, and Legal) framework so called e-business PESTEL framework, as a method for structural analysis of macro environment forces in the future. In addition to this PESTEL framework, the Porter’s five forces model was employed to analyse the industrial forces that also influence MTNN e-business strategy. The main goal of this research is to give an overview of industry and macro-environment forces influencing the e-business strategy MTN-Nigeria and the impact of future developments. The research methodology was explorative and descriptive. A further method for future analysis of the macro-environments influences and a suggestion on how to incorporate it in this research work is given. The e-business strategy of MTNN consists of four areas: E-procurement, E-collaboration (CRM), Supply chain management and E-commerce. The influences found on macro-environments level are political and sociocultural forces and in the industry levels are bargaining power of customers and suppliers of its products and services .The most recommendations are that MTN-Nigeria should add e-business PESTEL framework described in this thesis to its e-business strategy check. Furthermore MTNN should include environment analysis more extensively in their e-business strategy approach as the factors in this research work shape the environment in which it carries out its business.

  • 76.
    Adelsberg, Emma
    et al.
    Blekinge Institute of Technology, School of Health Science.
    Skarström, Therese
    Blekinge Institute of Technology, School of Health Science.
    Patienters upplevelser av mötet med akutsjukvården2009Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Upplevelsen av mötet med akutsjukvården kan vara komplicerad på grund av att det ofta handlar om snabba korta möten där patienterna kan befinna sig i en kris. För att mötet med patienterna ska bli så bra som möjligt är det viktigt att vårdpersonalen har kunskap om hur patienterna upplever mötet med akutsjukvården. Syftet med studien var att få en djupare förståelse för patienters upplevelse av mötet med akutsjukvården. En litteratur studie med kvalitativ ansats gjordes. Studien resulterade i två stycken kategorier positiva och negativa upplevelser. Kommunikation var den främsta förutsättningen för att mötet med akutsjukvården skulle upplevas som positivt av patienterna. När patienterna kände sig delaktiga i samtalen bildades ett samarbete mellan båda parter vilket gjorde att patienterna kände sig bekräftade och kände trygghet.

  • 77.
    Adema, David
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Blenkhorn, Sara
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Houseman, Sarah
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Scaling-up Impact: Knowledge-based Organizations Working Toward Sustainability2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Human society faces serious environmental and social threats as a result of systemic unsustainable actions and values. This is a time of cultural self-evaluation and profound change. This study examines how 13 social and environmental change-based organizations, through network partnerships and a robust organizational knowledge-base, are responding to these challenges. A systems perspective was used as a guide to promote a holistic understanding of the actors within the system, their perceptions of success, strategies, actions and tools used to guide them toward sustainability. The results indicate that organizations seeking to scale-up their impact toward sustainability might benefit from the following success factors: 1. Collaboration with diverse partners to contribute to more effective interventions in complex systems, 2. Integrating comprehensive definitions of sustainability with organizational vision to facilitate success, 3. The application of leverage points and transparent prioritization processes to asure congruence between organizational purpose and actions, 4. Practices of dialogue and deep listening build rewarding partnerships and, 5. Metrics that support partnerships and gauge progress toward sustainability. In conclusion network partnerships have the potential to generate widespread sustained change and can be supported by complex systems science and a Framework for Strategic Sustainable Development.

  • 78.
    Ademovski, S. Erovic
    et al.
    Kristianstad Univ, Sect Hlth & Soc, S-29188 Kristianstad, Sweden..
    Lingstrom, P.
    Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Cariol, Gothenburg, Sweden..
    Renvert, Stefan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    The effect of different mouth rinse products on intra-oral halitosis2016In: International Journal of Dental Hygiene, ISSN 1601-5029, E-ISSN 1601-5037, Vol. 14, no 2, p. 117-123Article in journal (Refereed)
    Abstract [en]

    Aim: To evaluate the effect of different mouth rinses 12 h after rinsing on genuine intra-oral halitosis. Materials and Methods: Twenty-four adults with halitosis were included in a double-blind, crossover, randomized clinical trial. Halitosis was evaluated 12 h after rinsing with placebo and five mouth rinse products containing zinc acetate and chlorhexidine diacetate; zinc lactate, chlorhexidine and cetylpyridinium chloride; zinc acetate and chlorhexidine diacetate with reduced amounts of mint and menthol; zinc chloride and essential oil; and chlorine dioxide using the organoleptic method and a gas chromatograph. Test periods were separated by 1 week. Results: Hydrogen sulphide (H2S), methyl mercaptan (MM) and the organoleptic scores (OLS) were significantly reduced 12 h following rinsing with all substances compared to placebo (P < 0.05). H2S was more effectively reduced after rinsing with zinc acetate and chlorhexidine diacetate and zinc acetate and chlorhexidine diacetate with reduced amounts of mint and menthol compared to rinsing with zinc chloride and essential oil (P < 0.05), and significantly lower values of MM were obtained after rinsing with zinc acetate and chlorhexidine diacetate compared to zinc lactate, chlorhexidine and cetylpyridinium chloride (P < 0.05). The percentage effectively treated individuals (H2S (<112 ppb), MM (<26 ppb) and OLS score <2) varied from 58% percentage (zinc acetate and chlorhexidine diacetate) to 26% (zinc chloride and essential oil). Conclusion: All treatments resulted in reduction in halitosis 12 h after rinsing compared to placebo. H2S and MM were most effectively reduced by zinc acetate and chlorhexidine diacetate.

  • 79. Ademovski, Seida Erovic
    et al.
    Lingström, Peter
    Winkel, Edwin
    Tangerman, Albert
    Persson, Rutger
    Renvert, Stefan
    Blekinge Institute of Technology, School of Health Science.
    Comparison of different treatment modalities for oral halitosis2012In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850, Vol. 70, no 3, p. 224-233Article in journal (Refereed)
    Abstract [en]

    Objectives. To assess the effects on intra-oral halitosis by a mouth rinse containing zinc acetate (0.3%) and chlorhexidine diacetate (0.025%) with and without adjunct tongue scraping. Materials and methods. Twenty-one subjects without a diagnosis of periodontitis were randomized in a cross-over clinical trial. Organoleptic scores (OLS) were assessed to define intra-oral halitosis by total volatile sulfur compound (T-VSC) measurements and by gas chromatography. Results. Twenty-one subjects with a mean age of 45.7 years (SD: +/- 13.3, range: 21-66). The OLS were significantly lower following active rinse combined with tongue scraping (p < 0.001) at all time points. Immediately after, at 30 min, and at day 14, the T-VSC values were lower in the active rinse sequence than in the negative rinse sequence (p < 0.001, p < 0.001 and p < 0.05, respectively). At 30 min and at day 14, the hydrogen sulfide (H2S) and methyl mercaptan (MM) values were lower in the active rinse sequence compared to the inactive rinse sequence (p < 0.001). The inactive rinse sequence with tongue scraping reduced T-VSC at 30 min (p < 0.001) but not at 14 days. Similar reductions in T-VSC, H2S and MM were found in the active rinse sequence with or without tongue scraping. Conclusion. The use of a tongue scraper did not provide additional benefits to the active mouth rinse, but reduced OLS and tongue coating index.

  • 80.
    Ademovski, Seida Erovic
    et al.
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden..
    Martensson, Carina
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden..
    Persson, G. Rutger
    Kristianstad Univ, Sch Hlth & Soc, S-29188 Kristianstad, Sweden.;Univ Washington, Sch Dent, Dept Periodont, Seattle, WA 98195 USA..
    Renvert, Stefan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    The effect of periodontal therapy on intra-oral halitosis: a case series2016In: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 43, no 5, p. 445-452Article in journal (Refereed)
    Abstract [en]

    Aim: The aim of this study was to evaluate the effects of non-surgical periodontal therapy on intra-oral halitosis 3months after therapy. Material and methods: Sixty-eight adults with intra-oral halitosis were included in a case series. Intra-oral halitosis was evaluated at baseline, and at 3months after treatment using the organoleptic scores (OLS), Halimeter (R), and a gas chromatograph. Results: Significant reductions for OLS (p<0.01), total sum of volatile sulphur compounds (T-VSC) (p<0.01) and methyl mercaptan (MM) (p<0.05) values were found after treatment. Hydrogen sulphide (H2S) levels were not significantly reduced. The numbers of probing pockets 4mm, 5mm and 6mm were significantly reduced as a result of therapy (p<0.001). Bleeding on probing (BOP) and plaque indices were also significantly reduced (p<0.001). For the 34 individuals with successful periodontal treatment (BOP<20% and a 50% reduction of total pocket depth) reductions in OLS (p<0.01) and T-VSC scores (p<0.01) were found. Eleven individuals were considered effectively treated for intra-oral halitosis presenting with a T-VSC value <160ppb, a H2S value <112ppb and a MM value <26ppb. Conclusion: Non-surgical periodontal therapy resulted in reduction of OLS, MM and T-VSC values 3months after therapy. Few individuals were considered as effectively treated for intra-oral halitosis.

  • 81. Ademovski, Seida
    et al.
    Persson, Gösta Rutger
    Winkel, Edwin
    Tangerman, Albert
    Lingström, Peter
    Renvert, Stefan
    Blekinge Institute of Technology, School of Health Science.
    The short-term treatment effects on the microbiota at the dorsum of the tongue in intra-oral halitosis patients-a randomized clinical trial2013In: Clinical Oral Investigations, ISSN 1432-6981, E-ISSN 1436-3771, Vol. 17, no 2, p. 463-473Article in journal (Refereed)
    Abstract [en]

    This study aims to assess the effects of rinsing with zinc- and chlorhexidine-containing mouth rinse with or without adjunct tongue scraping on volatile sulfur compounds (VSCs) in breath air, and the microbiota at the dorsum of the tongue. Material and methods: A randomized single-masked controlled clinical trial with a cross-over study design over 14 days including 21 subjects was performed. Bacterial samples from the dorsum of the tongue were assayed by checkerboard DNA-DNA hybridization. Results: No halitosis (identified by VSC assessments) at day 14 was identified in 12/21 subjects with active rinse alone, in 10/21with adjunct use of tongue scraper, in 1/21 for negative control rinse alone, and in 3/21 in the control and tongue scraping sequence. At day 14, significantly lower counts were identified only in the active rinse sequence (p < 0.001) for 15/78 species including, Fusobacterium sp., Porphyromonas gingivalis, Pseudomonas aeruginosa, Staphylococcus aureus, and Tannerella forsythia. A decrease in bacteria from baseline to day 14 was found in successfully treated subjects for 9/74 species including: P. gingivalis, Prevotella melaninogenica, S. aureus, and Treponema denticola. Baseline VSC scores were correlated with several bacterial species. The use of a tongue scraper combined with active rinse did not change the levels of VSC compared to rinsing alone. Conclusions: VSC scores were not associated with bacterial counts in samples taken from the dorsum of the tongue. The active rinse alone containing zinc and chlorhexidine had effects on intra-oral halitosis and reduced bacterial counts of species associated with malodor. Tongue scraping provided no beneficial effects on the microbiota studied. Clinical relevance: Periodontally healthy subjects with intra-oral halitosis benefit from daily rinsing with zinc- and chlorhexidine-containing mouth rinse.

  • 82.
    Aderounmu, Adejoke
    et al.
    Blekinge Institute of Technology.
    Doski, Helan
    Blekinge Institute of Technology.
    Anhörigas upplevelse av att leva med en familjemedlem som har diagnosen schizofreni2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 83.
    Adesina, Owolabi Abiona
    Blekinge Institute of Technology, School of Engineering.
    Statistical Modelling and the Fokker-Planck Equation2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    A stochastic process or sometimes called random process is the counterpart to a deterministic process in theory. A stochastic process is a random field, whose domain is a region of space, in other words, a random function whose arguments are drawn from a range of continuously changing values. In this case, Instead of dealing only with one possible 'reality' of how the process might evolve under time (as is the case, for example, for solutions of an ordinary differential equation), in a stochastic or random process there is some indeterminacy in its future evolution described by probability distributions. This means that even if the initial condition (or starting point) is known, there are many possibilities the process might go to, but some paths are more probable and others less. However, in discrete time, a stochastic process amounts to a sequence of random variables known as a time series. Over the past decades, the problems of synergetic are concerned with the study of macroscopic quantitative changes of systems belonging to various disciplines such as natural science, physical science and electrical engineering. When such transition from one state to another take place, fluctuations i.e. (random process) may play an important role. Fluctuations in its sense are very common in a large number of fields and nearly every system is subjected to complicated external or internal influences that are often termed noise or fluctuations. Fokker-Planck equation has turned out to provide a powerful tool with which the effects of fluctuation or noise close to transition points can be adequately be treated. For this reason, in this thesis work analytical and numerical methods of solving Fokker-Planck equation, its derivation and some of its applications will be carefully treated. Emphasis will be on both for one variable and N- dimensional cases.

  • 84.
    Adeyinka, Oluwaseyi
    Blekinge Institute of Technology, School of Engineering, Department of Interaction and System Design.
    Service Oriented Architecture & Web Services: Guidelines for Migrating from Legacy Systems and Financial Consideration2008Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The purpose of this study is to present guidelines that can be followed when introducing Service-oriented architecture through the use of Web services. This guideline will be especially useful for organizations migrating from their existing legacy systems where the need also arises to consider the financial implications of such an investment whether it is worthwhile or not. The proposed implementation guide aims at increasing the chances of IT departments in organizations to ensure a successful integration of SOA into their system and secure strong financial commitment from the executive management. Service oriented architecture technology is a new concept, a new way of looking at a system which has emerged in the IT world and can be implemented by several methods of which Web services is one platform. Since it is a developing technology, organizations need to be cautious on how to implement this technology to obtain maximum benefits. Though a well-designed, service-oriented environment can simplify and streamline many aspects of information technology and business, achieving this state is not an easy task. Traditionally, management finds it very difficult to justify the considerable cost of modernization, let alone shouldering the risk without achieving some benefits in terms of business value. The study identifies some common best practices of implementing SOA and the use of Web services, steps to successfully migrate from legacy systems to componentized or service enabled systems. The study also identified how to present financial return on investment and business benefits to the management in order to secure the necessary funds. This master thesis is based on academic literature study, professional research journals and publications, interview with business organizations currently working on service oriented architecture. I present guidelines that can be of assistance to migrate from legacy systems to service-oriented architecture based on the analysis from comparing information sources mentioned above.

  • 85.
    Adhagen, Gustav
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Platser för avskildhet: Att få vara ifred i offentliga rum2014Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Detta arbete undersöker utifrån ett teoretiskt perspektiv offentliga rum och vilka funktioner dessa platser anses fylla. Det övergripande syftet har varit att studera hur aspekterna mötesplats och avskildhet behandlas i samband med begreppet offentliga rum. Detta genom att först identifiera flertalet relevanta nyckelord utifrån uppsatsens teoretiska utgångspunkter. Nyckelorden har sedan applicerats på ett empiriskt material, i detta fall Västerås Översiktsplan, för att undersöka vad som framställs som betydelsefullt i och med användningen av offentliga rum. Det som framkommit genom innehållsanalysen är att offentliga rum anses fylla framförallt en viktig funktion i staden. Funktionen som mötesplats. Där människor med olika bakgrund både spontant och planerat ska kunna mötas och umgås. Möten som inte visar sig problematiseras utan enbart ses som något positivt. Undersökningen visar vidare att begreppet avskildhet inte alls lyfts. Liknande begrepp så som rekreation, avkoppling, vila, lugn och ro framhålls dock som viktiga aktiviteter som offentliga rum ska skapa förutsättningar för. Emellertid påvisas att dessa aktiviteter kan komma att hamna i konflikt med andra funktioner, så som mötesplatser, skjutbanor och motorsportanläggningar. Det framkommer slutligen att funktionen av offentliga rum anses bygga på föreställningen om att dessa rum ska utgå från en social grund och att de ska utsätta individer för varandra. Avskildhet och att få vara ifred visar sig istället vara en aktivitet som får utövas i det egna hemmet.

  • 86.
    ADHIKARLA, VAMSI KIRAN
    Blekinge Institute of Technology, School of Engineering.
    3D VIDEO FORMAT CONVERSION2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    The main aim of this thesis work is to find/implement various methods that convert Conventional Stereoscopic 3D Video (CSV) to Multiview video (MVV). The work investigates different methods that can produce multiple views given a stereoscopic pair from a frame of a particular video sequence and continues with the process of selecting the best among investigated methods that has optimum quality and speed. In contrast to the existing algorithms, this work disregards the physical depth but instead focus on pixel value correspondence. The intermediate view generation in this work is not considered as a geometrical problem, but a morphing problem. Different morphing algorithms (mesh, field and thin plate spline morphing techniques) are considered for conversion. Performance of each morphing algorithm is in turn compared using different correspondence matching techniqes. The investigated methods aim to produce arbitrary number of novel synthesized camera views from a sparse view set. Mesh morphing algorithm is found to be a better candidate in terms of signal to noise ratio, but requires accurate correspondences at edges of an object in a particular scene and also needs more execution time to generate more number of views. A new approach to field morphing has been introduced in this thesis work, which performs better in terms of execution time and also found to produce intermediate views with reasonable signal to noise ratio. This approach is observed to bring good trade off between speed and accuracy. This conversion has an advantage it can be used as a decompression mechanism that can produce multiple views required for an Autostereoscopic 3D display from a stereoscopic left and right pair. This approach also brings the benefit of backward compatibility as present standards for CSV may be used to provide multiview 3D video to high fidelity Autostereoscopic 3D displays of the future. This work has applications in free view point television, video conferencing systems etc.,

  • 87.
    Adidamu, Naga Shruti
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Bheemisetty, Shanmukha Sai
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Assessment of Ixia BreakingPoint Virtual Edition: Evolved Packet Gateway2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 88.
    Adinyra, Noamesi
    et al.
    Blekinge Institute of Technology, School of Management.
    Gligui, Elliot
    Blekinge Institute of Technology, School of Management.
    Green Marketing Potential as Assessed from Consumer's Purchasing Behaviors: The Case of Ghana2011Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Green Marketing has become an important strategy in businesses since the international rise of environmental awareness among countries. With greater awareness rising among the public, especially with reference to the global warming and climate change phenomenon, people have become cautious with regards to their purchases, specifically towards the nature of purchased products. As green marketing continues therefore to evolve not only into a strategy but into a platform across the world, Ghana is still at the onset of a green marketing phenomenon. To therefore assess the direction of this phenomenon, the study is aimed at determining the green marketing potential in Ghana as assessed through the perspective of consumers. Environmental Awareness and Consumer Behavior was used in order to assess the presence of a green potential in Ghana. As environmental awareness is able to serve a clear purpose for green consumerism, consumer behavior is able to show the applicative potential of green consumerism. Through online surveys and questionnaires, results of the study were able to reveal a strong green potential existing in Ghana, both with positive indicators within environmental awareness and consumer behavior. Further, results have also noted specific products that have the greatest potential within Ghana‘s green market; green food and body care products showed the highest potential for a prospective green business as reflected in bivariate fit analysis.

  • 89.
    Adnan, Md Asif
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Shehata, Ahmed
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Stress Analysis Validation for Gear Design2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Gear stress analysis and understanding the effect of misalignment and microgeometry is important for gear designers and for those who work in gear maintenance. The misalignment can lead to the higher stress acting in one side of the gear tooth and the micro-geometry modification can improve the stress distribution in the gear teeth. In this research, a helical gear pair was modeled using three different software and tools; LDP, KISSsoft and Abaqus. Three different cases were modeled to study the effect of misalignment and microgeometry. Finally, the results from different tools were presented and discussed. It was observed that the tooth contact analysis software resulted in significantly higher stresses than the FE software. The results have been discussed to understand the differences in the cases obtained from the used tools. The results showed how bad is the effect of the misalignment on the gear mesh and the stress distribution and how the microgeometry modifications are used to compensate that effect.

  • 90.
    Adolfsen, Linus
    Blekinge Institute of Technology, School of Engineering.
    Parameterstyrd tillverkning av rör för marina fartyg2012Student thesis
    Abstract [sv]

    Innehållet i denna rapport är ett resultat av ett moment i utbildningen till Utvecklingsingenjör i Maskinteknik. Arbetet har skett genom ett samarbete mellan Linus Adolfsen, Kockums AB och Blekinge Tekniska Högskola. Rapporten behandlar i stort två moment, ett praktiskt och ett teoretiskt. Den första delen, den praktiska, gick ut på att finna en metod för att överbrygga steget från modell till verklighet på ett effektivt sätt. Detta resulterade i en egenutvecklad programvara som kan läsa in utdatafilen från Tribon (CAD programvara) och översätta detta till en programfil för Herber CNC 90 bockningsmaskin. Den andra delen är teoretisk och är en analys av verksamheten utifrån perspektivet att medge förtillverkning. Resultatet blev en analys av den berörda verksamheten med förslag på hur man ska åtgärda de problem och hinder som finns idag. Det gav även stort upphov till förslag på vidare studier.

  • 91.
    Adolfsson, Elin
    Blekinge Institute of Technology, School of Computing.
    Sociala medier för att hantera kundkontakter2012Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [sv]

    KONTEXT. I takt med att Internets framväxt och fler och fler människor ansluter sig till sociala medieplattformar som Facebook, uppkommer nya sätt att interagera och kommunicera mellan varandra. Samtidigt ökar antalet organisationer och företag, som i sin tur måste hitta nya vägar för att deras marknadsföring ska sticka ut och bli uppfattad. För att nå ut till målgruppen med budskap, måste organisationen vara där målgruppen är. Därför har Facebook blivit en ny del av företags marknadsföringsredskap. Denna studie är fokuserad på Malmö stadsbiblioteks användning av Facebook som ett kommunikationsverktyg i hanteringen av kundkontakter. MÅL. Syftet med denna magisteruppsats är att undersöka Malmö stadsbiblioteks användning av Facebook, med ett huvudsakligt fokus på undperception och kundens upplevelse av kommunikationen, för att utreda hur Malmö stadsbibliotek bör använda Facebook i marknadsföringssyfte. METOD. Denna studie är baserad på en empirisk undersökning innehållandes en innehållsanalys av Malmö stadsbiblioteks Facebooksida, och också en onlineenkät gjord på de som ”gillar” och följer Facebooksidan. RESULTAT. Resultatet av den empiriska studien visar att Malmö stadsbibliotek står inför en bred målgrupp där segmentering är nödvändigt för att skapa och sprida rätt budskap till den primära målgruppen. Malmö stadsbibliotek publicerar statusuppdateringar relativt jämnt fördelat på månadens dagar och det är möjligt att peka ut olika kategorier av uppdateringar med olika målgruppsresponser och upplevelser från följarna. Resultatet av studien presenteras som diagram och tabeller med beskrivningar för att förbättra illustrationen och därför öka förståelsen. SLUTSATS. Slutsatsen av denna magisteruppsats är att de flesta respondenterna är positiva inför Malmö stadsbiblioteks användning av Facebook. Baserat på diverse befintliga teorier är marknadsföring på sociala nätverk ett bra sätt att interagera, kommunicera och få feedback från kunder för att kunna bygga goda relationer med kunderna. Detta är någonting som är väldigt viktigt i nuläget när antalet företag och reklambruset är så högt som det är. Det finns ingen enkel väg till framgång, med enbart en korrekt väg. Det är beroende av varje specifik organisation och deras specifika primärmålgrupp.

  • 92.
    Adolfsson, Emma
    et al.
    Blekinge Institute of Technology, School of Health Science.
    Cornelius, Jenny
    Blekinge Institute of Technology, School of Health Science.
    Sjuksköterskans reaktioner och bearbetning av traumatiska händelser uppkomna i arbetet2010Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Sjuksköterskornas arbetsvardag bestod av att ofta möta lidande och död hos sina patienter. De behövde i sitt arbete strategier för att hantera sina psykiska och känslomässiga reaktioner. Syftet med arbetet var att undersöka sjuksköterskans reaktioner och bearbetningsmetoder av traumatiska händelser uppkomna i arbetet. Metoden var litteraturstudie. Artiklarna analyserades enligt Evidence Based Nursing (EBN) gjord av Flemming (1998). Resultatet visade att sjuksköterskor reagerade på olika sätt och använde sig av varierande bearbetningsmetoder. Slutsatsen blev att bearbetningsmetoder efterfrågades och var väldigt viktigt för att undvika konsekvenser för sin hälsa.

  • 93.
    Adolfsson, Erik
    Blekinge Institute of Technology, School of Planning and Media Design.
    Vindkraften och landskapet: en fallstudie av vindkraftsplaneringen i Motala kommun2010Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [sv]

    Detta examensarbete vill beskriva de nya förutsättningar för att behandla vindkraftsetablering i tematiska tillägg till översiktsplaner, som uppstått i och med att prövningen av vindkraftsverk 2009 till stor del förts över från plan- och bygglagen till miljöbalken. Examensarbetet omfattar också ett förslag till tema-tiskt tillägg till Motala kommuns översiktsplan. Där prövas en analys av hur estetiska och landskapsrelaterade bedömningar kan göras. Fokus har lagts vid hur bedömningar kommer att hanteras när vindkraftverk som bygglovbefrias enbart genomgår en tillståndsprövning. Reflektioner och slutsatser bygger på egna tankar från utarbetandet av det tematiska tillägget och erfarenheter av efterföljande arbete inom Motala kommun med att omvandla planförslaget till en kommunal produkt Dessutom har intervjuer gjorts med representanter från kommunens stadsbyggnadsenhet, bygglovenhet och från länsstyrelsen. Utifrån redovisade förutsättningar och analys av hur vindkraftens omgivningspåverkan kan komma att bedömas har riktlinjer har utarbetats. Dessa är utformade så att de ska underlätta prövningar enligt plan- och bygglagen och miljöbalken. I examensarbetet redovisas ett förslag till tematiskt tillägg till översiktsplanen. Detta inleds med övergripande information om planprocessen och en beskrivning av prövningsprocesser av vindkraft. Vindkraftens omgivningspåverkan beskrivs generellt ur flera aspekter men med tyngdpunkt på konsekvenser för landskaps-bilden och hur denna påverkan kan bedömas. Både positiva och försvårande förutsättningar för vindkraft i kommunen redovisas i förslaget till tematiskt tillägg till översiktsplanen. Vissa områden är förenade med starka bevarandevärden och redovisas som olämpliga för vindkraft. Detta gäller främst områden med stora natur-, kultur- och friluftsintressen.

  • 94.
    Adolfsson, Henrik
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Telecommunication Systems.
    Svensson, Peter
    Blekinge Institute of Technology, School of Engineering, Department of Telecommunication Systems.
    Design and implementation of the MMS portal2006Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    MMS-enabled terminals on the market today are very complicated to use. It takes several steps to create a multi-slide MMS-message with images and text. This discourages users from using it. To increase usage of MMS, several companies provide web-based or stand-alone programs that allow users to create and send MMS-messages from a regular computer. However these editors have many limitations and are not user-friendly. This thesis describes the design and implementation of a user-friendly web-based MMS-portal where users can create, edit and send MMS-messages. The portal is integrated into Densitet’s system for development of mobile services. Conclusions that can be draw from this work are that problems with MMS interoperability have mostly the poor standardization to blame. Different terminals support different types of images and sound formats, and to make the MMS-portal user-friendly, format conversions of uploaded content had to be implemented. Also the MMS-portal only supports basic MMS-functionality. If the MMS-specification includes more audio and image formats and if the MMS-terminals are upgraded to handle these formats, sending MMS-messages will be easier and mobile messaging will continue to grow.

  • 95.
    Adolfsson, Jonny
    et al.
    Blekinge Institute of Technology, School of Management.
    Ehnbom, Lars
    Blekinge Institute of Technology, School of Management.
    Martinsson, Pär-Ola
    Blekinge Institute of Technology, School of Management.
    Mål- och resultatstyrning i offentlig verksamhet: En fallstudie av äldreförvaltningen inom Karlskrona kommun2004Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    Purpose: To compile a description of how output and result control works practically according to budget responsible persons on managing level in the public sector. Then study if output control and result control in the public sector could be classified as output control and result control according to general typologies of management control made by different authors. We shall at the same time both find answers on if the output and result control is a well functioning management control method and if the possibility to measure goals that has been set up must be there to be able to run output and result control in the public sector. Method: Deep interviews with budget responsible persons in the elderly administration in the community of Karlskrona. We have then interpreted the interviewed persons opinions to the meaning of output control and result control in the elderly administration. Results: Our study has come to the conclusion that the elderly administration that claims to be using output control and result control is in fact operating with “frame control with cost responsibility” according to the typologies that we have studied. We have although in the same time received an answer that their method of control works in a good way and that this mostly depends on the measurements in form of “abstract judgments” of the activity.

  • 96. Adolfsson, Stefan
    On Automatic Detection of Burn-through Using a Parametric Model1995Report (Other academic)
  • 97. Adolfsson, Stefan
    Quality Monitoring in Pulsed GMA Welding Using Modern Signal Processing Methods1995Licentiate thesis, comprehensive summary (Other academic)
  • 98. Adolfsson, Stefan
    Quility Monitoring in Robotised Short Circuiting GMA Welding1997Report (Other academic)
    Abstract [en]

    This paper addresses the problem of automatic monitoring the weld quality produced by robotised short arc welding. A simple statistical change detection algorithm for the weld quality, recursive Sequential Probability Ratio Test (SPRT), is used. The algorithm may equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the variance of the amplitude of the weld voltage. The performance of the algorithm is evaluated using experimental data. The results obtained from the algorithm indicate that it is possible to detect changes in the weld quality automatically and on-line.

  • 99. Adolfsson, Stefan
    et al.
    Bahrami, Ali
    Bolmsjö, Gunnar
    Claesson, Ingvar
    Automatic quality monitoring in robotised GMA welding using a repeated sequential probability ratio test method1997In: International Journal for the Joining of Materials, ISSN 0905-6866, Vol. 9, no 1, p. 2-8Article in journal (Refereed)
  • 100. Adolfsson, Stefan
    et al.
    Bahrami, Ali
    Claesson, Ingvar
    A Sequential Probability Ratio Test Method for Quality Monitoring in Robotised GMA Welding1997Conference paper (Refereed)
    Abstract [en]

    This paper deals with the problem of automatic monitoring the weld quality when welding with Gas Metal Arc (GMA) in short circuiting mode. Experiments with two different types of T-joints are performed in order to provoke optimal and non-optimal welding conditions. During the experiments, voltage and current are measured from the welding process. A simple statistical change detection algorithm for the weld quality, the repeated Sequential Probability Ratio Test (SPRT), is used. The algorithm can equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the fluctuations of amplitude in the weld voltage. It is shown that the fluctuations of the weld voltage amplitude decreases when the welding process is not operating under optimal condition. The results obtained from the experiments indicate that it is possible to detect changes in the weld quality automatically and on-line.

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