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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
181

The knowledge base of machine learning, across data analytics teams in a matrix organization. : An exploratory case study on machine learning

Johansson, Josefin January 2017 (has links)
Machine learning is a field within the broader concept of artificial intelligence and addresses the questions of how to build systems which learn from experience. The field is one of the oldest disciplines in computer science but has had many recent advancements due to the large amounts of data being generated. Today, machine learning together with artificial intelligence is seen as the two most rapidly growing fields within computer science. The purpose of this thesis is to explore and identify the current knowledge base of machine learning across data analytics teams, within the matrix organization Wise Inc.. This study has been performed using an exploratory case study method, based on the embedded units within the matrix organization. In this research, the units represent thirteen different cross-functional teams existing within the Wise Inc. organization. All thirteen teams are data analytics teams and performing a variety of different analytics depending on the team’s individual purpose. The analysis of embedded units has been performed within the units, but also across units. Using data collected through a qualitative questionnaire and interview, the knowledge base of machine learning could be explored and identified. Analysing the collected data, it was showed that the knowledge base across the data analytics teams in Wise Inc. is currently relatively low. Two key teams have been identified to have a very high level of knowledge. The knowledge base was examined based on participants theoretical and practical knowledge when it comes to machine learning. The aspect of machine learning usage and experience was included in the analysis and appeared to show a weak positive correlation to the overall knowledge. However, the statistical significance could not be determined. The empirical study also indicates that across teams, the level of knowledge is slightly higher than the level of experience. As a positive result, most participants appear to have a good theoretical understanding of machine learning in relation to artificial intelligence, which normally is one of the most common miss-interpretations. Even though the overall knowledge base is low, there are a few key people which stand out with a high knowledge base amongst teams. Observing the team as a whole the knowledge base is medium, but when looking at the individuals within the team there are a few key members with high expertise. These people are not working within the two teams identified with a high machine learning knowledge base but are part of other analytics teams. These people are important to identify as they can contribute with great value to the Wise Inc. organization.
182

Distributed vehicle testing : dynamic simulation for automotive winter testing

Nybacka, Mikael January 2007 (has links)
Today, rather than provide parts similar to their competitors and rely on one or two automakers, successful automotive component suppliers focus heavily on innovation and collaboration with several manufacturers in a global market. In this thesis, an as-is scenario for automotive winter testing is presented. A plausible to-be scenario framed by a Functional Product Innovation (FPI) vision is discussed. This vision places an emphasis on additional knowledge and information in early design phases, such as the importance of understanding the actual use of the product and the environment where it is going to be used since these aspects need to be designed into the final product. Life cycle perspective and close cross- company collaboration in the design and development of products constitutes a basis for realizing FPI. A simulation-driven approach during the early phases to support product development decisions, by the same token, try out those solutions in numerous of what-if business scenarios, is also included in the vision. A concept enabling distributed vehicle testing is suggested with an emphasis on vehicle dynamics simulation and visualization. The main benefit of this concept is that different disciplines involved in the product development process can use the system to enhance the concurrency between activities. Control system engineers and mechanical engineers can view ongoing tests in real-time and change designs, and efficiently re- simulate and influence ongoing tests in a distributed manner. The use of dynamic simulation software during the test in real-time will give more information of the vehicle's behavior and feed the visualization application with the data needed to render the moving vehicle in a 3D environment. By using visualization aids, engineers can simultaneously see the behavior of the vehicle and regular data presented in graphs or tables, and thus perceive more information from the test. A Java based visualization application presents the test results in a rich 3D environment, thus enabling non-experts to understand the dynamic behavior of complex vehicle systems. This application will contribute to an enhanced validation of the vehicle and the ability to collaborate in a distributed real-time virtual environment. By supporting test procedures with real-time simulations and in particular 3D visualization, how the tests are conducted radically changes. The approach supports decision-making to become a more concurrent activity, as well as facilitating and enabling distributed collaborative work. Furthermore, the approach increases the opportunity to extract rich information of the vehicle and its systems, which provides a good basis for well-informed decisions. / <p>Godkänd; 2007; 20070531 (evan)</p>
183

Product design preferences in the USA, South Korea and Germany

Johansson, Maria January 2007 (has links)
Small and medium-sized enterprises (SMEs) are essential for the economy in many countries, given that the majority of companies often are SMEs. The use of modern information and communication technologies provides opportunities for SMEs to act on a global market. When an SME exports products or services to a foreign country, it should acquire knowledge of both customer and cultural preferences to avoid business failures. The main purpose of the studies presented in this thesis was to investigate what the product design preferences are like in three example countries, the USA, South Korea and Germany in order to illustrate possible design preference differences among cultures. Furthermore, the studies examine how an SME can use this information for increasing export sales. Field studies were conducted in the target countries to gather information concerning design preferences and to study the information gathering process. The selected methods, questionnaires, interviews and observations used for gathering information were assumed to be well known and easily accessible for most SMEs. The presented results show both similarities and differences. Americans found "good value for the price" to be the most important factor when buying a product, while Germans preferred "long life". Koreans found aesthetic factors more important than both Americans and Germans. Furthermore, most visual characteristics were found to be similar in the three target countries, but a colourful example was found to be one of the least preferred characters by Americans and Germans, while Koreans found it considerably more preferable. In addition, approaches to gathering information about customers in a foreign culture are presented as well as design concept suggestions for two example products based on results from the field studies. / <p>Godkänd; 2007; 20070413 (ysko)</p>
184

Design preferences concerning example products in the USA, South Korea and Germany

Haarakoski, Milla January 2007 (has links)
Companies are currently being encountered with increasing competition in the international markets, since products are exported more easily to a variety of countries. In order to succeed in export countries, product preferences should correspond to customer needs, since similarities and differences are found concerning product attribute preferences. However, small and medium-sized enterprises (SMEs) might not have the resources to conduct vast studies to discover what the preferences are. In order to present the SMEs with information and possible explanations of what the various preferences are, a group of respondents´ product design preferences were investigated in three example countries, the USA, South Korea and Germany. The purpose is to demonstrate how SMEs can benefit from using quantitative and qualitative methods to develop products to better suit the intended target market, by providing knowledge of applicable methods and approaches when culture-related product design preferences are studied. Furthermore, the study provides knowledge of product design preferences in the three target countries with regard to example products, with supportive material concerning general design preferences. Based on the results, it is possible to draw conclusions about what product attribute categories should be emphasized when exporting to the example countries. The studied Americans rated economic attributes, especially good value for money, significantly more important than the other target countries concerning the example products. Then again, the Koreans and Germans emphasized usability, especially safe to use, higher than the Americans for specific products. Overall, the aesthetic attributes were not considered important, although the Koreans preferred a trendy and exclusive look significantly more than the Americans. To demonstrate how the acquired knowledge can be implemented in practice, a design concept with examples of function, design, materials, colours and other visual attributes is presented. The results are presented in four papers based on the acquired material. / <p>Godkänd; 2007; 20070413 (ysko)</p>
185

The driver and the instrument panel

Tretten, Phillip January 2008 (has links)
The trend today is to produce automobiles that have exciting systems which enhance the users' driving experiences, however, the distraction potential of these systems has not fully been considered. Since there can be large differences in the driver's level of distraction caused by visual overload due to individual and cultural characteristics. Therefore, three different markets were chosen due to their distinct vehicle and driving traditions and laws; China, Sweden and United States of America (US). The aim of this thesis, from an instrumentation design point of view, is to gain a better understanding of what information, and where information should be presented, in instrument panels to achieve low levels of distraction and, hence, decrease cognitive load, increase safety and functionality. Studies undertaken in this thesis sought a user based solution. The questionnaire results showed that safety attributes were ranked before, quality, practicality, and attractiveness in automobiles. The number one concern for the Chinese market was safety features presented to them from HDD in the instrument panel, the Swedish market preferred the traditional features and placements, the US preferred safety features and those assisting in safe driving to be placed in the HUD. A high-fidelity driving simulator was used to study respondents of varied age and driving experience, of which drove through both rural and city traffic with speed limits ranging from 50 to 70 km/hour while responding to information presented in HUD, HDD, IF, and CS positions. All groups rated the HUD as a very good placement for information retrieval while driving, followed by HDD, IF, and CS respectively. The overall preferred placement was HUD as it also was the preferred position of serious failures and vehicle operation. The results from both studies showed that people wanted logical groupings of driver information placed in the vehicle so to reduce the risk of distraction. / <p>Godkänd; 2008; 20081203 (phitre)</p> / OPTIVe - Optimised system integration for safe interaction in vehicles
186

A Distributed Ledger for Gamification of Pro-Bono Time

Atterlönn, Viktor January 2018 (has links)
No description available.
187

Assessing Reusability in Automated Acceptance Tests

Irshad, Mohsin January 2018 (has links)
Context: Automated acceptance tests have become a core practice of agile software development (e.g. Extreme Programming). These tests are closely tied to requirements specifications and these tests provide a mechanism for continuous validation of software requirements. Software reuse has evolved with the introduction of each new reusable artefact (e.g., reuse of code, reuse of frameworks, tools etc.). In this study, we have investigated the reusability of automated acceptance tests keeping in view their close association with textual requirements. Objective: As automated acceptance tests are closely related to software requirements, we have used existing research in software engineering to identify reusability related characteristics of software requirements and used these characteristics for automated acceptance tests.This study attempts to address the following aspects: (i) what important reuse characteristics should be considered when measuring reusability of automated acceptance tests? (ii) how reusability can be measured in automated acceptance tests?, and (iii) how cost avoided through reuse of automated acceptance tests can be calculated? Method: We have used a combination of research methods to answer different aspects of our study. We started by identifying reusability related characteristics of software requirements, with help of systematic literature review. Later, we tried to identify the reusability related characteristics of defect reports and the process is documented using an experience report. After identifying the characteristics from the previous two studies, we used these characteristics on two case-studies conducted on Behaviour driven development test cases (i.e., acceptance tests of textual nature). We proposed two approaches that can identify the reuse potential of automated acceptance tests and evaluated these approaches in the industry. Later, to calculate the cost avoided through reuse, we proposed and evaluated a method that is applicable to any reusable artifact. Results: The results from the systematic literature review shows that text-based requirements reuse approaches are most commonly used in the industry. Structuring these text-based requirements and identifying the reusable requirements by matching are the two commonly used methods for enabling requirements to reuse. The results from the second study, industrial experience report, indicates that defect reports can be formulated in template and defect triage meeting can be used to identify important test-cases related to defect reports. The results from these two studies, text-based requirements reuse approaches and template based defect reports, were included when identifying approaches to measure reuse potential of BDD test-cases. The two proposed approaches, Normalised Compression Distance (NCD) and Similarity Ratio, for measuring reuse potential were evaluated in the industry. The evaluation indicated that Similarity ratio approach performed better than the NCD approach, however, the results from both approaches were comparable with the results gathered with the help of expert analysis. The cost related aspects of reusable acceptance tests were addressed and evaluated using a method that calculates the cost-avoidance through reuse. The industrial evaluation of the method and guidelines show that the method is an artifact independent method.  Conclusions: The evidence from this study shows that the automated acceptance tests are reusable, similar to text-based software requirements and their reuse potential can be calculated as well. The industrial evaluation of the three studies (i.e. approaches to measure reuse potential, calculation of cost avoidance and defect reports in triage meetings) shows that the overall results are applicable to the industry. However, further work is required to evaluate the reuse potential of automated acceptance tests in different contexts.
188

Förutsättningar för lyckade projekt i komplexa miljöer : En studie om projektkomplexitets inverkan på kvalitetsarbete / Conditions for successful projects in complex environments

Borg, Emma January 2018 (has links)
Studies show that the success of a construction project depends onits initial design work. Thus, it’s interesting to investigate howensuring design work quality is done. Since the mid 70’s SKB has worked on how the final repository of spent long-lived nuclearfuel should be built to satisfy the requirement of total repository from the people and environment for a period of 100,000 years. The project is large and consists of many subprojects; where one of them is carried out by WSP. The quality work in this project has been evaluated to see how the ensuring of reaching required quality and expectations. This type of project can be assumed to be complex both to control and execute, in terms of structural complexity, technical complexity and uncertain complexity. By characterizing the project due to its surroundings, content and organizational behaviour and to them apply the dimensions of complexity the aim of the study is to identify how the complexity has effect the quality work. To understand this, semi structured interviews with the project organization has been done. The result of the study shows that especially the structural complexity, mainly by the number of collaborated departments, affects the quality work. Also uncertain complexity affects the quality work, due to unclear contract between client and supplier. To receive better quality work in the future the coordination between different departments needs to be better. This involves for example establish project specific methods and routines, for all in the project to use. To be able to deliver successful projects one presumption is that client and supplier agreed on what is to be delivered. If the project scope isn’t clear agreedupon, a satisfied client can never be reached.
189

EXPLORING COMPUTERIZED TROUBLE TICKETING SYSTEM AND ITS BENEFITS IN VODAFONE GHANA

Akama-kisseh, Jerome January 2016 (has links)
Today more than ever, Computerized Trouble Ticketing System is becoming a booming information technology system that makes the difference between staying in business in a competitive global telecommunication arena. This quantitative exploratory survey utilised conveniently selected research subjects to explore computerized trouble ticketing system and its inherent benefits in Vodafone Ghana Plc. Cross section of vital data set collected with the aid of structured questionnaires haven been analyzed using descriptive statistics model. The study revealed that, effective and efficient usage of computerized trouble ticketing systems benefit the company in terms of its customer satisfaction, competitive advantage and business intelligence in competitive telecom arena. Nevertheless, the smooth realization of these inherent benefits are constantly challenged by complexity in managing volumes of data generated, intense era of competition, high cost of trouble ticketing system, as well as, rapid technological obsolesce in computerized trouble ticketing applications in telecommunication market. The study recommended for the quick and effective adoption of differentiation strategy, cost leadership strategy and customer relationship management, which are customer-centric measures that can build sustainable long-term customer relationship that can create value for the company, as well as, for the customers. / <p></p><p></p><p>This was Via Adobe Connect</p><p>The room was be opened from 09:30 CET (Central European time and thus local time in Sweden), and the presentations began at 10:00.</p><p></p><p> </p>
190

Process Modularization : A new approach for designing processes

Ridzén, Måns January 2017 (has links)
Modular product design has proven helpful in dealing withvariance, while maintaining efficiency and quality. It allowscompanies to combine strategies that are otherwise difficult tocombine, by decoupling product systems to allow paralleldevelopment and manufacturing. Applying modular design to businessprocesses could help organizations in dealing with an increasingdemand of flexibility, while maintaining or increasing efficiency.Since research on process modularity is scarce and that there areno methods for modularizing processes, this study has adapted amethod for product modularization (Modular Function Deployment®)to be used for business processes.A major issue in doing so has been to find the right framework fordescribing business processes. Their abstract nature makes itharder (then with a physical product) to envision possibledivisions into modules. Structures and properties of businessprocesses, which traditional process models cannot reveal, havebeen exposed by the unconventional use of the ARA-model (Håkansson&amp; Snehota, 1989) as a tool for depicting business processes. Thathas brought the conclusion that activities and resources,belonging to a business process, are codependent and part of abigger network of activities, resources and actors. Building onthese ideas, the Modular Function Deployment® method has beenadapted for business processes. A case process is used throughoutthe paper to show as an example and evidence of the findings. Evenif not yet implemented within the organization, the proposedmodularization of the process show great promise in improving theperformance of the process, as well as further embodying thecompany strategy within its architecture.

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