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  • 51.
    Olofsson, Simon
    et al.
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Olsson, Emrik
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Analyzing OpenMP Parallelization Capabilities and Finding Thread Handling Optimums2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    As physical limitations limit the clock frequencies available for a single thread, processor vendors increasingly build multi-core systems with support for dividing processes across multiple threads for increased overall processing power. To examine parallelization capabilities, a fast fourier transform algorithm is used to benchmark parallel execution and compare brute-forced optimum with results from various search algorithms and scenarios across three different testbed systems. These algorithms use OpenMP instructions to directly specify number of threads available for program execution. For smaller problem sizes the tests heavily favour fewer threads, whereas the larger problems favour the native 'maximum' thread count. Several algorithms were used to compare ways of searching for the optimum thread values at runtime. We showed that running at maximum threads is not always the most optimum choice as there is a clear relationship between the problem size and the optimal thread-count in the experimental setup across all three machines. The methods used also made it possible to identify a way to dynamically adjust the thread-count during runtime of the benchmark, however it is not certain all applications would be suitable for this type of dynamic thread assignment

  • 52.
    Olsson, Emrik
    et al.
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Boberg, Filip
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Prestanda i en konsumentrouter: Jämförelse mellan Netgear firmware och DD-WRT2017Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    The most common way today to connect to the Internet is through a consumer router. A consumer router is adapted for the user to perform settings in the router. A routers function and the ability to display a graphical user interface depends on a software that is called firmware. This firmware varies based on the router manufacturer. There are also third-party firmwares to implement in a consumer router to extend its features, design and performance.  This report provides a background to various techniques that are used by wireless networks, LANs and WANs. The report also deals with performance comparisons between Netgear's firmware and Dresden Wireless router (DD-WRT) [7]. Questions raised in the report are whether there is any difference in performance in terms of throughput, goodput, signal strength or start-up times between them. Measured performance linked to the test types mentioned is presented and the results are analyzed and conclusions are drawn from the results and the analysis.  From the performance tests made it was found that Netgear´s firmware performs better regarding to WAN and WLAN speeds while DD-WRT is faster at booting the firmware.

  • 53.
    Pasic, Anel
    et al.
    University West, Department of Economics and IT, Divison of Informatics.
    Cetinkaya, Talat
    University West, Department of Economics and IT, Divison of Informatics.
    Integration mellan system: En undersökning av olika framgångsfaktorer2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper exposes the problems and challenges organizations face when integrating aged systems, web based systems and web services. The paper focuses on how people with different titles in an organization experience systems integration and the factors that contribute to project failure or success. The research methodology used in this is Grounded Theory and the resulting theory of this paper has taken form through the coding of transcribed interviews, which have gone through a constant comparing to other theories in the area of interest, mostly articles about success factors in system integration. The resulting outcome is a success model aimed to describe the underlying indicators to achieve project success.

    The success model consists of three factors that contribute to success in integration projects. The factors are: globalization, governance and balance. Integration projects are very complex in nature, more so than normal projects as there are more stakeholders involved and more interests to take into consideration. Due to the complex nature of integration projects, the need for a holistic view arises. It's crucial for an integration project that stakeholders take the interests and needs of other projects taking place simultaneously into consideration. The governance aspect of systems integration deals with the planning of strategies, communication and cooperation with other stakeholders involved within the integration project. It's crucial for integration projects to shift focus from individual goals and individual interest to mutual goals and interests. The third and final factor contributing to success in integration projects is balance. The balance between technical issues and organizational issues is crucial for the success of projects. It's very common that organizations focus on technical issues and neglect the organizational issues.

  • 54.
    Pettersson, Sebastian
    et al.
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Reneland, Tobias
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    PearlDiary2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    PearlDiary is a mobile application developed for an external client with the goal of digitaliz-ing the process of documenting and logging information when dealing with a severe disease. This report will focus on cancer and specifically children with cancer. Documenting and handling the information given by hospitals can be overwhelming to the patient, or the parents of the patient, and therefore PearlDiary was developed to explore the possibilities of documenting the process in a more modern way. In this thesis report a comparison be-tween the methods used today and the application developed in the project is made, as well as an evaluation of the developed application. PearlDiary was developed as a web applica-tion in HTML5, which is able to run on most modern mobile platforms. The comparison is done by testing the application with the help of a closed test group consisting of users previously experienced with the methods used today. The result shows that the test group was overall positive to use PearlDiary as a substitute or as a complement to the methods they're already using and that PearlDiary was easy to use as a method of documenting their treatment

  • 55.
    Ragnarsson, Sebastian
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Undersökning av hur en SSD påverkas av hög belastning2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    A big part of the public and companies have a high demand to be able to store information with high speeds. Thanks to this, SSDs are becoming more common. This thesis is about putting high loads on an SSD and seeing how the performance changes. The collection of data is done during a 14-day period with intervals of 12 hours between each data collection. The results show a marginal and barely noticeable difference in performance after the 14 days despite that the reported health status has decreased drastically.

  • 56.
    Rytterlund, Håkan
    et al.
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Bornstrand, Daniel
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    Engelbrektsson, Linus
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    HTML5 istället för mobila applikationer: – en utvärdering2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this report is to evaluate the advantages and disadvantages related to a portation of a native mobile application to a web application. Thus a prototype was built based on the Android application Virtual Tycoon, a product by the company Mindark, with the purpose to imitate the native app to the highest degree possible. This prototype was used as a base of evaluations for this project. The main advantage of creating a web application is that it can be made cross-platform. This causes the product to have a broader user base as well as reduces the development costs. With today's means of web development nearly all aspects of a native app can be imitated in terms of graphics and performance. A portation of this kind is not without compromise. When creating a web application the developer cannot interact with the operating system of the device or use its native functions. Security-wise the web application will be vulnerable to more types of attacks, and the code integrity will be impaired since all code executed in the web browser is visible to the user. By the accomplishment of this project, the conclusion drawn is that web applications is a worthy substitute to native mobile applications

  • 57.
    Stenberg, Andreas
    et al.
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    Larsson, Oskar Bjärne
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    OSPFv2 och OSPFv3 mot Address Families i en jämförelsestudie av SPF-beräkningstid och konvergeringstid2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [en]

    When implementing OSPF in a network that uses both IPv4 and IPv6 addresses there are two ways. One either use OSPFv2 for IPv4 and OSPFv3 for IPV6 at the same time but each with their own separate process or one could use OSPFv3 Address Families for both IPv4 and IPv6 under one process.This university diploma thesis looks at which of the two ways of implementing OSPF that has the quickest SPF-calculation and which one that has the lowest convergence time.The routers used in the tests were of model Cisco 2901 with IOS version 15.4. The results show that OSPFv3 Address Families performs SPF-calculation better than OSPFv2 and OSPFv3 when faced with 1250 or more networks. Even though Address Families has a quicker SPF-calculation it has a higher convergence time than OSPFv2 and OSPFv3.

  • 58.
    Swaroop Rodda, Theja
    University West, Department of Engineering Science, Division of Computer, Electrical and Surveying Engineering.
    The reasons for outsourcing IT projects to India and their Effectiveness2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In today's' global economy, the outsourcing rate is increasing at rapid phase especially in larger organizations. Whenever there is outsourcing, the inherent risk factors are also associated with it and the project manager plays a greater role in reducing such risk.

    Therefore, the current study aims to explore the relationship between the project manager's efficiency in terms of their hard and soft skills with the successful completion of the IT outsourced projects in Indian companies. The study adopted explorative, qualitative study design, where the project managers working in IT outsourcing companies were selected as the target population and the semi structured interview method was used to collect the data. Based on the interview scripts themes were identified which explores their skills, effectiveness and the importance of the project managers to overcome the challenges and issues involved in IT Outsourcing. The findings showed that quality of the product, timely delivery and technological support were identified as the critical factors of IT outsourcing. Majority of the respondents stated that the project manager skills (Hard and soft Skill) were important for the success of the project.

  • 59.
    Vaern, Johan
    University West, Department of Engineering Science, Division of Computer and Electrical Engineering.
    En jämförelse av hybridapplikationer utvecklade i Intel XDK2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Today, when accessing information and services on the Internet on desktop computers it has become the norm to use web browsers. In mobile devices the situation is different, where the users prefer dedicated applications. The market for mobile devices is fragmented with many different operating systems and manufacturers. Because of this fragmentation each application needs to be developed in different versions Lately, methods have been introduced for developing applications with a shared code base; this technology makes it possible to run an application on any type of operating system. This type of application is often called a hybrid application, and uses web technologies such as HTML5, JavaScript and CSS3. To be able to access the native features of the device it is necessary to use API libraries.

    Intel XDK was introduced in 2013 and is a development environment for hybrid applications, it gives developers several opportunities to choose from different runtime environments, API-libraries and frameworks for design of user interfaces. With the help of benchmark tests this report compares the performance of the different options available.

    The report also presents recommendations on which options to use for development of applications targeting the Android OS using Intel XDK 

  • 60.
    Widengård, Simon
    et al.
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Cogelja, Tony
    University West, Department of Engineering Science, Division of Mathematics, Computer and Surveying Engineering.
    Live migrering av en virtuell brandvägg under last2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Virtualisation is becoming more and more popular to use. VMware is a service that offers virtualisation of hardware. This means that it's possible to virtualize multiple machines on one server, this to save on cost, space and ease of management. Tests are made by sending Iperf data through a client to an Iperf server. Between these two virtual machines lies a software firewall that's using pfSense. Meanwhile the Iperf client is sending data to the server, a vMotion migration is executed to another ESXi. This investigation is about seeing how vMotion can handle a software firewall, that handles traffic at the same time it's about to migrate the virtual machine to another ESXI.

    The results showed that when utilizing the 1000 Mbit/s link to the max, the transfer speed of the Iperf client is lowered to make room for vMotion traffic. You can see depending on the bandwidth that it is affecting the migration times. The migration is going through but the time it takes is longer.

12 51 - 60 of 60
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  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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  • html
  • text
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