| 31. |
- Holmgren, Johan, et al.
(författare)
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Modelling modal choice effects of regulation on low-sulphur marine fuels in Northern Europe
- 2014
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Ingår i: Transportation Research Part D: Transport and Environment. - : Elsevier BV. - 1361-9209 .- 1879-2340. ; 28, s. 62-73
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Tidskriftsartikel (refereegranskat)abstract
- The implementation of MARPOL Annex VI in the North and Baltic Sea Sulphur Emission Control Area (SECA) has raised economic concerns among shippers and shipowners, as well as spurred policymakers to appeal to various interests, such as citizen health, export industry competitiveness, and consumer prices. To justify their cases, policymakers and stakeholders have commissioned various agencies to monitor the implementation’s effects upon sustainability, especially regarding a potential modal shift from sea to road transport. This article thus reviews some of these commissioned studies in order to analyse the effects of the implementation and the possibility of modal shift. It also provides an agent-based simulation study of route choice for comparatively high-value cargo from Lithuania in the east to the United Kingdom in the west. Ultimately, the results of our TAPAS study do not provide concrete evidence supporting a modal shift from sea to road transport and indeed, they indicate that a shift is unlikely to occur.
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| 32. |
- Holt, Nina E., et al.
(författare)
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Empirical evaluations on the cost-effectiveness of state-based testing: An industrial case study
- 2014
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Ingår i: Information and Software Technology. - : Elsevier BV. - 0950-5849 .- 1873-6025. ; 56:8, s. 890-910
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Tidskriftsartikel (refereegranskat)abstract
- Context: Test models describe the expected behavior of the software under test and provide the basis for test case and oracle generation. When test models are expressed as UML state machines, this is typically referred to as state-based testing (SBT). Despite the importance of being systematic while testing, all testing activities are limited by resource constraints. Thus, reducing the cost of testing while ensuring sufficient fault detection is a common goal in software development. No rigorous industrial case studies of SBT have yet been published. Objective: In this paper, we evaluate the cost-effectiveness of SBT on actual control software by studying the combined influence of four testing aspects: coverage criterion, test oracle, test model and unspecified behavior (sneak paths). Method: An industrial case study was used to investigate the cost-effectiveness of SBT. To enable the evaluation of SBT techniques, a model-based testing tool was configured and used to automatically generate test suites. The test suites were evaluated using 26 real faults collected in a field study. Results: Results show that the more detailed and rigorous the test model and oracle, the higher the fault-detection ability of SBT. A less precise oracle achieved 67% fault detection, but the overall cost reduction of 13% was not enough to make the loss an acceptable trade-off. Removing details from the test model significantly reduced the cost by 85%. Interestingly, only a 24–37% reduction in fault detection was observed. Testing for sneak paths killed the remaining eleven mutants that could not be killed by the conformance test strategies. Conclusions: Each of the studied testing aspects influences cost-effectiveness and must be carefully considered in context when selecting strategies. Regardless of these choices, sneak-path testing is a neces- sary step in SBT since sneak paths are common while also undetectable by conformance testing.
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| 33. |
- Johansson, Maria Eiman, et al.
(författare)
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Nurses' clinical reasoning concerning management of peripheral venous cannulae
- 2009
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Ingår i: Journal of Clinical Nursing. - : Blackwell. - 0962-1067 .- 1365-2702. ; 18:23, s. 3366-3375
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to describe nurses´clinical reasoning regarding peripheral venous cannulae management by focusing on the clinical information and circumstances considered during the decision-making process. On every shift nurses make several decisions, among others concerning the management of peripheral venous cannuae. Thrombophlebitis is a common complication associated with its use, although more severe complications can arise. There are clinical practice guidelines within the area, but they are not always adhered to. Previous studies have examined decisions related to the management of peripheral venous cannulae, but did not include observations in a naturalistic setting. A qualitative study combining observations and interviews was designed. Methods: Participant observation facilitated open interviews about the clinical reasoning behind decision-making in observed situations, as well as semi-structured interviews regarding clinical reasoning about the general management of peripheral venouscannulae. transcribed interview texts were analysed with content analysis. Three main categories describe clinical information and circumstances: the individual patient situation, the nurse´s work situation and experience of peripheral venous cannulae management. The overall theme of the interview texts was that the clinical reasoning was a balancing act between minimising patient discomfort and preventing complications from the peripheral venous cannulae. Conclusion: At all times the patients´well-being was considered, but the ways the nurses approached this differed depending on how they considered clinical information in the individual patient situation, circumstances in their own work situation and their experience of peripheral venous cannulae management. Relevance toclinical practice: Knowledge of the clinical information and circumstances considered in naturalistic settings, is valuable when implementing and adjusting clinical practice guidelines to local settings. This knowledge is also useful in nursing education as student nurses´and nurses´ability tobalance between preventing complications and avoiding discomfort is important for enhancing patient care.
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| 34. |
- Johansson, Maria Eiman, et al.
(författare)
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Registered Nurses´Adherence to Clinical Guidelines Regarding Peripheral Venous Catheters : A Structured Observational Study
- 2008
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Ingår i: Worldviews on Evidence-Based Nursing. - : Blackwell. - 1545-102X .- 1741-6787. ; 5:3, s. 148-159
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Tidskriftsartikel (refereegranskat)abstract
- peripheral catheterization is a common procedure, which affects numerous patients in health care today. having peripheral venous catheters in situ might lead to complications such as thrombophlebitis and sepsis, and clinical guidelines have been developed to assist nurses in their decisionmaking. Several reasons are given for clinicians not always adhering to clinical guidelines, although such adherence might lead to fewer complications. This papaer aims to describe registered nurses´adherence to national and local guidelines on peripheral venous catheters by focusing on time in situ, site, size, and documentation at the dressing. An additional aim is to describe the thrombophlebitis frequency associated with peripheral venous catheters in situ. Structured observational study of patients with peripheral venous catheters in situ, conducted from December 2004 to June 2005. data of 343 peripheral venous catheters were analyzed. Nurses partly adhered to national and local guidelines concerning size and site. Guideline adherence concerning documentation at the dressing was low. The results showed that non-adherence pertaining to time in situ varied between 5% and 26.3%. Differences between adherence to national or local guidelines were shown for size, site, and documentation at the dressing. Mild thrombophlebitis (Grades 1 and 2) was observed in 7.0%. Nurses partly adhered to clinical guidelines. Differences in guideline adherence were observed for wards with local or national guigelines, as well as for wards with different specialities. In accordance with clinical guidelines, the nurses seemed to replace or remove peripheral venous catheters before any severe complications arose. Adherence to clinical guidelines has an impact for preventing patient complications and thus it is essential that nurses are aware of their existence. Feedback and discussions of guideline adherence or of complication rates might influence nurses´clinical decision-making.
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| 35. |
- Karlsson, Charlie, 1945-, et al.
(författare)
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Innovative transformations of global city regions in the post-urban world
- 2020
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Ingår i: Urban empires: Cities as global rulers in the new urban world. Glaeser, E., Kourtit, K., Nijkamp, P. (red.). - New York City : Taylor & Francis. - 9780429892363 - 9781138601703 ; , s. 257-274, s. 257-274
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 36. |
- Kashfi, Pariya, 1980, et al.
(författare)
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A conceptual ux-aware model of requirements
- 2016
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Ingår i: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). - Cham : Springer International Publishing. - 1611-3349 .- 0302-9743. - 9783319449012 ; 9856, s. 234-245, s. 234-245
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Konferensbidrag (refereegranskat)abstract
- User eXperience (UX) is becoming increasingly important for success of software products. Yet, many companies still face various challenges in their work with UX. Part of these challenges relate to inadequate knowledge and awareness of UX and that current UX models are commonly not practical nor well integrated into existing Software Engineering (SE) models and concepts. Therefore, we present a conceptual UX-aware model of requirements for software development practitioners. This layered model shows the interrelation between UX and functional and quality requirements. The model is developed based on current models of UX and software quality characteristics. Through the model we highlight the main differences between various requirement types in particular essentially subjective and accidentally subjective quality requirements. We also present the result of an initial validation of the model through interviews with 12 practitioners and researchers. Our results show that the model can raise practitioners’ knowledge and awareness of UX in particular in relation to requirement and testing activities. It can also facilitate UX-related communication among stakeholders with different backgrounds.
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| 37. |
- Kjellberg, A., et al.
(författare)
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Randomised, controlled, open label, multicentre clinical trial to explore safety and efficacy of hyperbaric oxygen for preventing ICU admission, morbidity and mortality in adult patients with COVID-19
- 2021
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 11:7
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Tidskriftsartikel (refereegranskat)abstract
- Introduction COVID-19 may cause severe pneumonitis and trigger a massive inflammatory response that requires ventilatory support. The intensive care unit (ICU)-mortality has been reported to be as high as 62%. Dexamethasone is the only of all anti-inflammatory drugs that have been tested to date that has shown a positive effect on mortality. We aim to explore if treatment with hyperbaric oxygen (HBO) is safe and effective for patients with severe COVID-19. Our hypothesis is that HBO can prevent ICU admission, morbidity and mortality by attenuating the inflammatory response. The primary objective is to evaluate if HBO reduces the number of ICU admissions compared with best practice treatment for COVID-19, main secondary objectives are to evaluate if HBO reduces the load on ICU resources, morbidity and mortality and to evaluate if HBO mitigates the inflammatory reaction in COVID-19. Methods and analysis A randomised, controlled, phase II, open label, multicentre trial. 200 subjects with severe COVID-19 and at least two risk factors for mortality will be included. Baseline clinical data and blood samples will be collected before randomisation and repeated daily for 7 days, at days 14 and 30. Subjects will be randomised with a computer-based system to HBO, maximum five times during the first 7 days plus best practice treatment or only best practice treatment. The primary endpoint, ICU admission, is defined by criteria for selection for ICU. We will evaluate if HBO mitigates the inflammatory reaction in COVID-19 using molecular analyses. All parameters are recorded in an electronic case report form. An independent Data Safety Monitoring Board will review the safety parameters. Ethics and dissemination The trial is approved by The National Institutional Review Board in Sweden (2020-01705) and the Swedish Medical Product Agency (5.1-2020-36673). Positive, negative and any inconclusive results will be published in peer-reviewed scientific journals with open access.
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| 38. |
- Kuzniarz, Ludwik, et al.
(författare)
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Generating Domain Models from Ontologies.
- 2002
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Ingår i: International Conference on Object-Oriented Information Systems, LNCS, Springer. - Montpellier, France : SPRINGER-VERLAG BERLIN.
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Konferensbidrag (refereegranskat)abstract
- The paper presents and elaborates on the idea of automatic acquisition of knowledge about domain structure from ontologies into an object-oriented software development process. The information required to be included in the domain model produced during the development process is identified. The existence of the knowledge in ontologies is investigated. Requirements for ontology description languages are formulated followed by brief evaluation of existing languages against these requirements. A schema for domain knowledge acquisition is outlined. A realization of the schema is sketched in the paper while the implementation details can be found in the technical report.
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| 39. |
- Lenberg, Per, 1976, et al.
(författare)
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An initial analysis of differences in software engineers’ attitudes towards organizational change
- 2016
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Ingår i: Proceedings - 9th International Workshop on Cooperative and Human Aspects of Software Engineering, CHASE 2016. - New York, NY, USA : ACM Press. - 9781450341554 ; , s. 1-7
-
Konferensbidrag (refereegranskat)abstract
- The ability to manage change is important in software engineering organizations, where rapid progress in technologies and constantly evolving methodologies create a turbulent environment. Research has identified employees’ attitudes towards organizational change as a key factor in the change process. Nonetheless, few studies exist that explore such attitudes in a software engineering context. The nature of change efforts is such that they often do not equally affect the various roles in the organization, which indicates that the roles may hold different attitudes. This study aimed to verify the existence of these presumed differences in attitudes towards organizational change between roles in a software engineering organization and to identify factors that contribute to these differences. The result of a survey (N=51) confirmed that there were significant differences, and that the software developers had a more positive attitude towards change and had deeper knowledge about the intended outcome compared to the line managers. The result of in-depth interviews (N=11) revealed that the software engineers evaluate the planned change in relation to the norms, values and standards of their peer group, meaning that an employee will have a positive attitude towards a change if its result is likely to make, or has made, it easier for him/her to uphold the peer group’s norms and values.
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| 40. |
- Lenberg, Per, 1976, et al.
(författare)
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An initial analysis of software engineers’ attitudes towards organizational change
- 2017
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Ingår i: Empirical Software Engineering. - : Springer Science and Business Media LLC. - 1382-3256 .- 1573-7616. ; 22, s. 2179-2205
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Tidskriftsartikel (refereegranskat)abstract
- © 2016, The Author(s). Employees’ attitudes towards organizational change are a critical determinant in the change process. Researchers have therefore tried to determine what underlying concepts that affect them. These extensive efforts have resulted in the identification of several antecedents. However, no studies have been conducted in a software engineering context and the research has provided little information on the relative impact and importance of the identified concepts. In this study, we have combined results from previous social science research with results from software engineering research, and thereby identified three underlying concepts with an expected significant impact on software engineers’ attitudes towards organizational change, i.e. their knowledge about the intended change outcome, their understanding of the need for change, and their feelings of participation in the change process. The result of two separate multiple regression analysis, where we used industrial questionnaire data (N=56), showed that the attitude concept openness to change is predicted by all three concepts, while the attitude concept readiness for change is predicted by need for change and participation. Our research provides an empirical baseline to an important area of software engineering and the result can be a starting-point for future organizational change research. In addition, the proposed model prescribes practical directions for software engineering organizations to adopt in improving employees’ responses to change and, thus, increase the probability of a successful change.
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