| 11. |
- Carlborg, Per
(författare)
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Extending the Service Innovation Concept : Realization and Productivity
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The purpose of this study is to contribute to a better understanding of service innovation by exploring realization as a part of service innovation. Service innovation can be described as something that creates value for customers through new service offerings or service processes while realization refers to the actual use or deployment of the service.My research approach is based on a multiple case study, that focuses on three international firms with origins in Sweden. Empirical material has been gathered through interviews and focus groups. A literature review that tracks the evolution of service innovation further contributes to the exploration of the service innovation concept.Innovation has traditionally been connected to new technology and new products. However the present study has found that service innovation has evolved into a multifaceted concept. Specifically, service innovation is not restricted to the development of new products and services in the shape of new offerings, it also becomes relevant to consider the actual usage of the service offerings. In order to fully understand the process of service innovation, it is important to include the usage of a service offering in the service innovation concept. This realization occurs when the service offering is introduced and used in the customer’s processes, and typically involves both the customer and the provider.This research illustrates how realization requires resources from both the provider and the customer. In general, the realization part of the service innovation process requires more participation from the customer than the development of new offerings. However, this can vary depending on the customer’s competence, intention to interact and level of commitment. Considering an active or recipient customer role and also whether the service offering is directed at the products or the customer processes, this study shows how these different service offerings will have different impacts on service innovation realization, for example, in terms of different resources being required.The extended view of the service innovation concept, includes realization, and is therefore not limited to developing new offerings. This view implies that new areas of innovation that do not necessary need to include new technology, but contribute in other ways to customer value creation must be propelled into focus. Productivity improvements in customer processes are becoming important since they help create customer value (reduced costs, improved quality, reduced down-time etc.). Empirical evidence shows how service offerings that emphasize improvements in customer processes have become more important. This thesis discusses how this view of productivity can result in important benefits for customers, as consideration is given to both customer satisfaction and the use of customer resources. In this respect, productivity becomes a part of the extended service innovation concept.Extending the service innovation concept by adding realization implies an increased emphasis on deployment, and implicitly on customer value creation. Thus, service innovation becomes critical for gaining long-term sustainable competitive advantages through service.
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| 12. |
- Hammar, Karl, 1982-
(författare)
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Towards an Ontology Design Pattern Quality Model
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The use of semantic technologies and Semantic Web ontologies in particular have enabled many recent developments in information integration, search engines, and reasoning over formalised knowledge. Ontology Design Patterns have been proposed to be useful in simplifying the development of Semantic Web ontologies by codifying and reusing modelling best practices.This thesis investigates the quality of Ontology Design Patterns. The main contribution of the thesis is a theoretically grounded and partially empirically evaluated quality model for such patterns including a set of quality characteristics, indicators, measurement methods and recommendations. The quality model is based on established theory on information system quality, conceptual model quality, and ontology evaluation. It has been tested in a case study setting and in two experiments.The main findings of this thesis are that the quality of Ontology Design Patterns can be identified, formalised and measured, and furthermore, that these qualities interact in such a way that ontology engineers using patterns need to make tradeoffs regarding which qualities they wish to prioritise. The developed model may aid them in making these choices.This work has been supported by Jönköing University.
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| 13. |
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| 14. |
- Holsmark, Rickard, 1970-
(författare)
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Deadlock Free Routing in Mesh Networks on Chip with Regions
- 2009
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- There is a seemingly endless miniaturization of electronic components, which has enabled designers to build sophisticated computing structureson silicon chips. Consequently, electronic systems are continuously improving with new and more advanced functionalities. Design complexity ofthese Systems on Chip (SoC) is reduced by the use of pre-designed cores. However, several problems related to the interconnection of coresremain. Network on Chip (NoC) is a new SoC design paradigm, which targets the interconnect problems using classical network concepts. Still,SoC cores show large variance in size and functionality, whereas several NoC benefits relate to regularity and homogeneity. This thesis studies some network aspects which are characteristic to NoC systems. One is the issue of area wastage in NoC due to cores of varioussizes. We elaborate on using oversized regions in regular mesh NoC and identify several new design possibilities. Adverse effects of regions oncommunication are outlined and evaluated by simulation. Deadlock freedom is an important region issue, since it affects both the usability and performance of routing algorithms. The concept of faultyblocks, used in deadlock free fault-tolerant routing algorithms has similarities with rectangular regions. We have improved and adopted one suchalgorithm to provide deadlock free routing in NoC with regions. This work also offers a methodology for designing topology agnostic, deadlockfree, highly adaptive application specific routing algorithms. The methodology exploits information about communication among tasks of anapplication. This is used in the analysis of deadlock freedom, such that fewer deadlock preventing routing restrictions are required. A comparative study of the two proposed routing algorithms shows that the application specific algorithm gives significantly higher performance.But, the fault-tolerant algorithm may be preferred for systems requiring support for general communication. Several extensions to our work areproposed, for example in areas such as core mapping and efficient routing algorithms. The region concept can be extended for supporting reuse ofa pre-designed NoC as a component in a larger hierarchical NoC.
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| 15. |
- Khademhosseinieh, Banafsheh, 1981-
(författare)
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Towards an Approach for Efficiency Evaluation of Enterprise Modeling Methods
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Nowadays, there is a belief that organizations should keep improving different aspects of theirenterprise to remain competitive in their business segment. For this purpose, it is required to understand the current state of the enterprise, analyze and evaluate it to be able to figure out suitable change measures. To perform such a process in a systematic and structured way, receiving support from powerful tools is inevitable. Enterprise Modeling is a field that can support improvement processes by developing models to show different aspects of an enterprise. An Enterprise Modeling Method is an important support for the Enterprise Modeling. A method is comprised of different conceptual parts: Perspective, Framework,Method Component (which itself contains Procedure, Notation and Concepts), and Cooperation Principles. In an ideal modeling process, both the process and the results are of high quality. One dimension of quality which is in focus in this thesis is efficiency. The issue of efficiency evaluation in Enterprise Modeling still seems to be a rather unexploited research area.The thesis investigates three aspects of Enterprise Modeling Methods: what is the meaning of efficiency in this context, how can efficiency be evaluated and in what phases of a modeling process could efficiency be evaluated. The contribution of the thesis is an approach for evaluation of efficiency in Enterprise Modeling Methods based also on several case studies. The evaluation approach is constituted by efficiency criteria that should be met by (different parts of) a method. While a subset of these criteria always need to be fulfilled in a congruent way, fulfillment of the rest of the criteria depends on the application case. To help the user in initial evaluation of a method, a structure of driving questions is presented.
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| 16. |
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| 17. |
- Pielaszkiewicz, Jolanta Maria, 1985-
(författare)
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On the asymptotic spectral distribution of random matrices : closed form solutions using free independence
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The spectral distribution function of random matrices is an information-carrying object widely studied within Random matrix theory. In this thesis we combine the results of the theory together with the idea of free independence introduced by Voiculescu (1985).Important theoretical part of the thesis consists of the introduction to Free probability theory, which justifies use of asymptotic freeness with respect to particular matrices as well as the use of Stieltjes and R-transform. Both transforms are presented together with their properties.The aim of thesis is to point out characterizations of those classes of the matrices, which have closed form expressions for the asymptotic spectral distribution function. We consider all matrices which can be decomposed to the sum of asymptotically free independent summands.In particular, explicit calculations are performed in order to illustrate the use of asymptotic free independence to obtain the asymptotic spectral distribution for a matrix Q and generalize Marcenko and Pastur (1967) theorem. The matrix Q is defined as where Xi is p × n matrix following a matrix normal distribution, Xi ~ Np,n(0, \sigma^2I, I).Finally, theorems pointing out classes of matrices Q which lead to closed formula for the asymptotic spectral distribution will be presented. Particularly, results for matrices with inverse Stieltjes transform, with respect to the composition, given by a ratio of polynomials of 1st and 2nd degree, are given.
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| 18. |
- Stenlund, Jörgen, 1959-
(författare)
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Travelling through time : Students’ interpretation of evolutionary time in dynamic visualizations
- 2019
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Evolutionary knowledge is important to understand and address contemporary challenges such as loss of biodiversity, climate change and antibiotic resistance. An important aspect that is considered to be a threshold concept in teaching and learning about evolution is the time it involves. The history of evolution comprises several scales of magnitude, some of which are far from direct human experience and therefore difficult to understand. One way of addressing this issue is to use dynamic visualizations that represent time, for example, to facilitate teaching and learning about evolution.This thesis investigates how students’ comprehension of evolution and evolutionary time can be facilitated by visualizations in educational settings. Two different dynamic visualizations were investigated. In paper I different temporal versions of a spatio-temporal animation depicting hominin evolution were explored. The temporal information was expressed as one or several timelines along which an animated cursor moved, indicating the rate of time. Two variables, the number of timelines with different scales, and the mode of the default animated time rate (either constant throughout the animation or decreasing as the animation progressed), were combined to give four different time representations. The temporal aspects investigated were undergraduate students' ability to find events at specific times, comprehend order, comprehend concurrent events, comprehend the length of time intervals, and their ability to compare the lengths of time intervals.In paper II, perceptions and comprehension of temporal aspects in an interactive, multi-touch tabletop application, DeepTree, were investigated. This application depicts the tree of life. The focus was on the interactive aspects, especially how the zooming feature was perceived, but also on any misinterpretations associated with the interaction. The same temporal aspects listed for paper I were also implicitly investigated.The findings indicate that handling the problem of large differences in scale by altering the rate of time in the visualization can facilitate perception of certain temporal aspects while, at the same time, can hinder a correct comprehension of other temporal aspects. Findings concerning DeepTree indicate that the level of interactions varies among users, and that the zooming feature is perceived in two ways, either as a movement in time or as a movement in the metaphorical tree. Several misinterpretations were observed, for example the assumption that the zooming time in the tree corresponds to real time, that there is an implicit coherent timeline along the y-axis of the tree, and that more nodes along a branch corresponds to a longer time.The research reported in this thesis supports the claim that careful choice, and informed use of visualizations matters, and that different visualizations are best suited for different educational purposes
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| 19. |
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| 20. |
- Svedjemo, Gustaf, 1958-
(författare)
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Ontology as Conceptual Schema when Modelling Historical Maps for Database Storage
- 2007
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Sweden has an enormous treasure in its vast number of large-scale historical maps from a period of 400 years made for different purposes, that we call map series. The maps are also very time and regional dependent with respect to their concepts. A large scanning project by Lantmäteriverket will make most of these maps available as raster images. In many disciplines in the humanities and social sciences, like history, human geography and archaeology, historical maps are of great importance as a source of information. They are used frequently in different studies for a variety of problems. A full and systematic analyse of this material from a database perspective has so far not been conducted. During the last decade or two, it has been more and more common to use data from historical maps in GIS-analysis. In this thesis a novel approach to model these maps is tested. The method is based on the modelling of each map series as its own ontology, thus focusing on the unique concepts of each map series. The scope of this work is a map series covering the province of Gotland produced during the period 1693-1705. These maps have extensive text descriptions concerned with different aspects of the mapped features. Via a code marking system they are attached to the maps. In this thesis a semantic analysis and an ontology over all the concepts found in the maps and text descriptions are presented. In our project we model the maps as close to the original structure as possible with a very data oriented view. Furthermore; we demonstrate how this ontology can be used as a conceptual schema for a logical E/R database schema. The Ontology is described in terms of the Protégé meta-model and the E/R schema in UML. The mapping between the two is a set of elementary rules, which are easy for a human to comprehend, but hard to automate. The E/R schema is implemented in a demonstration system. Examples of some different applications which are feasibly to perform by the system are presented. These examples go beyond the traditional use of historical maps in GIS today
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