| 41. |
- Bengtsson, PerOlof, et al.
(författare)
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Analyzing Software Architectures for Modifiability
- 2000
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The software architecture plays an important role in achieving a modifiable system, but few methods for modifiability analysis exist. In this paper, we propose an analysis method for software architecture modifiability that has successfully been applied in several cases. The method consists of five main steps, i.e. goal selection, software architecture description, scenario elicitation, scenario evaluation and interpretation.
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| 42. |
- Bengtsson, PerOlof
(författare)
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Architecture-Level Modifiability Analysis
- 2002
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Cost, quality and lead-time are three main concerns in software engineering projects. The quality of developed software has traditionally been evaluated on completed systems. Evaluating the product quality at completion introduces a great risk of wasting effort on software products with inadequate system qualities. It is the objective of this thesis to define and study methods for assessment, evaluation and prediction of software systems’ modifiability characteristics based on their architecture designs. Since software architecture design is made early in the development, architecture evaluation helps detect inadequate designs and thus reduces the risk of implementing systems of insufficient quality. We present a method for architecture-level analysis of modifiability (ALMA) that analyses the modifiability potential of a software system based on its software architecture design. The method is scenario-based and either compares architecture candidates, assesses the risk associated with modifications of the architecture, or predicts the effort needed to implement anticipated modifications. The modification prediction results in three values; a prediction of the modification effort and the predicted best- and worst-case effort for the same system and change scenario profile. In this way the prediction method provides a frame-of-reference that supports the architect in the decision whether the modifiability is acceptable or not. The method is based on the experiences and results from one controlled experiment and seven case-studies, where five case studies are part of this thesis. The experiment investigates different ways to organize the scenario elicitation and finds that a group of individually prepared persons produce better profiles than individuals or unprepared groups.
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| 43. |
- Bengtsson, PerOlof
(författare)
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First Swedish Conference on Software Engineering Research and Practise
- 2001
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Konferensbidrag (refereegranskat)abstract
- Sweden is considered as a leading nation in modern IT business. The growth of software development business provides an opportunity to strengthen the software engineering research in Sweden even further. This conference is intended as a starting point for a national network on software engineering and provides opportunity to discuss the current situation in software engineering research. Besides that the conference present a forum for Ph. D. students to meet and exchange ideas.
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| 44. |
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| 45. |
- Bengtsson, PerOlof
(författare)
-
SERP'01
- 2001
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Konferensbidrag (refereegranskat)abstract
- These proceedings comprise of eight peer-reviewed articles ranging from software engineering fields such as process improvement to component based development and software architecture.
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| 46. |
- Bennet, Louise, et al.
(författare)
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Clinical Outcome of Erythema Migrans after Treatment with Phenoxymethyl Penicillin
- 2003
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Ingår i: Scandinavian Journal of Infectious Diseases. - : Taylor & Francis. - 0036-5548 .- 1651-1980. ; 35:2, s. 129-131
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Tidskriftsartikel (refereegranskat)abstract
- In a 5 y retrospective follow-up study in southern Sweden of 708 adult individuals with erythema migrans as the single manifestation of Lyme borreliosis, the clinical outcome and the antibiotic treatment were studied. 80%, were treated with phenoxymethyl penicillin, 15% with doxycycline and 5% with other antibiotics. Phenoxymethyl penicillin and doxycycline were extremely effective: 98 and 94% of the individuals reported complete recovery without complications. Few individuals reported the development of new symptoms following treatment and none developed any late manifestation of Lyme borreliosis during the observation period. Thus, in the area studied the treatment of the early localized manifestation of Lyme borreliosis (erythema migrans) with antibiotics was extremely successful. The current Swedish recommendation to use phenoxymethyl penicillin, when no sign of disseminated infection or coinfection with other tick-borne pathogens is present, seems excellent.
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| 47. |
- Bennet, Louise, et al.
(författare)
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Reinfection with Lyme borreliosis : A retrospective follow-up study in southern Sweden
- 2002
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Ingår i: Scandinavian Journal of Infectious Diseases. - OSLO : TAYLOR & FRANCIS AS. - 0036-5548 .- 1651-1980. ; , s. 183-186
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Tidskriftsartikel (refereegranskat)abstract
- In a 5-y retrospective follow-up study in southern Sweden that initially included > 1000 individuals with previously diagnosed erythema migrans, factors that influenced the risk of reinfection with Lyme borreliosis were elucidated. The total frequency of reinfection was 4% and the number of tick bites influenced the risk of reinfection: those bitten > 10 times during the observation period had a 4-8-fold increased risk compared with those bitten < 5 times. Women manifested to a greater extent than men although both genders were bitten equally by ticks, thus indicating that women may be more susceptible to reinfection. All reinfected women were > 44 y old. The county of Kalmar including Oland was found to be highly endemic for reinfection with Lyme borreliosis. Thus the number of tick bites, gender, age and study area influenced the risk of reinfection.
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| 48. |
- Berander, Patrik, et al.
(författare)
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Differences in Views between Development Roles in Software Process Improvement : A Quantitative Comparison
- 2004
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Konferensbidrag (refereegranskat)abstract
- This paper presents a quantitative study that evaluates how different roles in a software development organization view different issues in software process improvement. The study is conducted in a large Swedish telecommunication organization with the traditional roles of software development. The respondents of the study got five different questions related to process improvement. The result was that the different roles disagreed in three of the questions while they agreed in two of the questions. The disagreement was related to issues about importance of improvement, urgency of problems, and threat against successful process management, while the questions where the roles agreed focused on communication of the processes (documentation and teaching). It is concluded that it is important to be aware and take into account the different needs of different roles and that looking into other areas (e.g. marketing) could be beneficial when conducting process improvements.
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| 49. |
- Berander, Patrik, et al.
(författare)
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Identification of Key Factors in Software Process Management : A Case Study
- 2003
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Konferensbidrag (refereegranskat)abstract
- When conducting process related work within an organization, it is important to be aware of which factors that are most important to consider. This paper presents an empirical study that was performed in order to find the key success factors in process management. One factor, namely synchronization of processes, was considered as much more important within the studied organization than within the studied literature. This shows that more research might be needed in this area. The study further shows that it is important to relate process improvement work to the properties of the affected organization and that the key factors identified are highly interrelated.
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| 50. |
- Berander, Patrik
(författare)
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Prioritization of Stakeholder Needs in Software Engineering : Understanding and Evaluation
- 2004
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In everyday life, humans confront situations where different decisions have to be made. Such decisions can be non-trivial even though they often are relatively simple, such as which bus to take or which flavor of a soft drink to buy. When facing decisions of more complex nature, and when more is at stake, they tend to get much harder. It is often possible to deal with such decisions by prioritizing different alternatives to find the most suitable one. In software engineering, decision-makers are often confronted with situations where complex decisions have to be made, and where the concept of prioritization can be utilized. Traditionally in software engineering, discussions about prioritization have focused on the software product. However, when defining or improving software processes, complex decisions also have to be made. In fact, software products and software processes have many characteristics in common which invite thoughts about using prioritization when developing and evolving software processes as well. The results presented in this thesis indicate that it is possible to share results and knowledge regarding prioritization between the two areas. In this thesis, the area of prioritization of software products is investigated in detail and a number of studies where prioritizations are performed in both process and product settings are presented. It is shown that it is possible to use prioritization techniques commonly used in product development also when prioritizing improvement issues in a software company. It is also shown that priorities between stakeholders of a software process sometimes differ, just as they do when developing software products. The thesis also presents an experiment where different prioritization techniques are evaluated with regard to ease of use, time consumption, and accuracy. Finally, an investigation of the suitability of students as subjects when evaluating prioritization techniques is presented.
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