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| 2. |
- Borg, Markus, et al.
(författare)
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SZZ unleashed: an open implementation of the SZZ algorithm : featuring example usage in a study of just-in-time bug prediction for the Jenkins project
- 2019
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Konferensbidrag (refereegranskat)abstract
- Machine learning applications in software engineering often rely on detailed information about bugs. While issue trackers often contain information about when bugs were fixed, details about when they were introduced to the system are often absent. As a remedy, researchers often rely on the SZZ algorithm as a heuristic approach to identify bug-introducing software changes. Unfortunately, as reported in a recent systematic literature review, few researchers have made their SZZ implementations publicly available. Consequently, there is a risk that research effort is wasted as new projects based on SZZ output need to initially reimplement the approach. Furthermore, there is a risk that newly developed (closed source) SZZ implementations have not been properly tested, thus conducting research based on their output might introduce threats to validity. We present SZZ Unleashed, an open implementation of the SZZ algorithm for git repositories. This paper describes our implementation along with a usage example for the Jenkins project, and conclude with an illustrative study on just-in-time bug prediction. We hope to continue evolving SZZ Unleashed on GitHub, and warmly invite the community to contribute.
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| 3. |
- Burke, Adam, et al.
(författare)
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InAs Nanowire Transistors with Multiple, Independent Wrap-Gate Segments.
- 2015
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Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6992 .- 1530-6984. ; 15:5, s. 2836-2843
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Tidskriftsartikel (refereegranskat)abstract
- We report a method for making horizontal wrap-gate nanowire transistors with up to four independently controllable wrap-gated segments. While the step up to two independent wrap-gates requires a major change in fabrication methodology, a key advantage to this new approach, and the horizontal orientation more generally, is that achieving more than two wrap-gate segments then requires no extra fabrication steps. This is in contrast to the vertical orientation, where a significant subset of the fabrication steps needs to be repeated for each additional gate. We show that cross-talk between adjacent wrap-gate segments is negligible despite separations less than 200 nm. We also demonstrate the ability to make multiple wrap-gate transistors on a single nanowire using the exact same process. The excellent scalability potential of horizontal wrap-gate nanowire transistors makes them highly favorable for the development of advanced nanowire devices and possible integration with vertical wrap-gate nanowire transistors in 3D nanowire network architectures.
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| 4. |
- Eising, Stefanie, et al.
(författare)
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Type 1 diabetes risk analysis on dried blood spot samples from population-based newborns: design and feasibility of an unselected case-control study
- 2007
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Ingår i: Paediatric and Perinatal Epidemiology. - : Wiley. - 0269-5022 .- 1365-3016. ; 21:6, s. 507-517
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Tidskriftsartikel (refereegranskat)abstract
- Development of type 1 diabetes mellitus (T1D) may be triggered pre- or perinatally by multiple factors. Identifying new predisposing T1D markers or combinations of markers in a large, well-characterised case-control collection may be important for future T1D prevention. The present work describes the design and feasibility of a large and unselected case-control study, which will define and evaluate prediction criteria for T1D at the time of birth. Danish registries (Biological Specimen Bank for Neonatal Screening, and the National Discharge Registry) made it possible to identify and collect dried blood spots (DBS) from newborns who later developed T1D (cases) born 1981-2002. DBS samples from 2086 cases and two matching control subjects per case were analysed for genetic and immune factors that are associated with T1D: (a) candidate genes (HLA, INS and CTLA4), (b) cytokines and inflammatory markers, (c) islet auto-antibodies (GAD65A, IA-2A). The objective of the study was to define reliable prediction tools for T1D using samples available at the time of birth. In a unique approach, the study linked a large unselected and population-based sample resource to well-ascertained clinical databases and advanced technology. It combined genetic, immunological and demographic data to develop prediction algorithms. It also provided a resource for future studies in which new genetic markers can be included as they are identified.
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| 5. |
- Forsberg-Nilsson, Karin, et al.
(författare)
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Oligodendrocyte precursor hypercellularity and abnormal retina development in mice overexpressing PDGF-B in myelinating tracts
- 2003
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Ingår i: Glia. - : Wiley. - 0894-1491 .- 1098-1136. ; 41:3, s. 276-89
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Tidskriftsartikel (refereegranskat)abstract
- Platelet-derived growth factor (PDGF) influences the generation of neurons and glia during embryogenesis and in early postnatal life. In an attempt to determine the consequences of an overexpression of PDGF-B during the first weeks of life, we targeted transgenic expression of a human PDGF-B cDNA to myelinating tracts using the promoter region of the myelin basic protein (MBP) gene. Transgenic mRNA and protein were expressed in the brain and the expression profile of the human PDGF-B during early postnatal development closely paralleled that of the endogenous mouse MBP gene. The gross morphological appearance of transgenic brains was normal but at the cellular level several phenotypic alterations could be identified. In white matter tracts such as the corpus callosum and cerebellar medulla, there was a marked hypercellularity. The number of oligodendrocyte precursors was increased and astrocytes were more abundant. In adult mice carrying the MBP-PDGF-B transgene, however, myelination appeared normal and the amount of oligodendrocytes was similar to that of control littermates. In addition to the phenotypic alterations in the brain, investigation of eye structure revealed a striking disorganization of retinal architecture. The retina was folded with cells collected in papillar or follicular-like structures. Retinal whole mount preparations after India ink perfusion revealed capillary disorganization with large-caliber vessels supporting only a few fine branches. Our observations strengthen the notion that PDGF is an important effector molecule in postnatal CNS development.
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| 6. |
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| 7. |
- Hansson, Jonas, et al.
(författare)
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Next generation relay autotuners—analysis and implementation
- 2021
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Ingår i: Proceedings of the 5th IEEE Conference on Control Technologies and Applications (CCTA) 2021. ; , s. 1075-1982
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Konferensbidrag (refereegranskat)abstract
- In order to produce models for automatic controller tuning, this paper proposes a method that combines a short experiment with a novel scheme for approximating processes using low-order time-delayed models. The method produces models aimed to tune PI and PID controllers, but they could also be used for other model-dependent controllers like MPC. The proposed method has been evaluated in simulations on benchmark processes. It has also been implemented in an industrial controller and tested experimentally on a water-tank process. It is shown that our method is successful in estimating models for a variety of processes such as lag-dominated, delay-dominated, balanced, and integrating processes. We also demonstrate that the experiment time is both shorter and more predictable than currently used autotuners.
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| 8. |
- Holmqvist, Kristian, 1976, et al.
(författare)
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Challenges in Steering Wheel Rim to Thorax Impacts Using Finite Element Hybrid III and Human Body Models for Heavy Vehicle Frontal Crash Applications
- 2010
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Ingår i: International IRCOBI Conference on the Biomechanics of Impact. ; , s. 293-296
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Konferensbidrag (refereegranskat)abstract
- A risk of severe injuries from steering wheel rim to thorax contacts has been identified in heavy vehicle frontal collisions. The objective of this study was to investigate the effects in changing the steering wheel rim tilt angle on the thorax of the Hybrid III and a human body model THUMS with respect to chest deflection and steering wheel rim contact interaction. It was found that the Hybrid III chest is more sensitive to changes in steering wheel tilt angle than the THUMS.
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| 9. |
- Holmqvist, Kristian, 1976, et al.
(författare)
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EVALUATION OF HYBRID III THORACIC INJURY CRITERIA IN IMPACTS WITH A SIMULATED TRUCK STEERING WHEEL – SUGGESTIONS FOR MODIFICATIONS IN INSTRUMENTATION AND REFERENCE VALUES
- 2009
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Ingår i: International IRCOBI Conference on the Biomechanics of Impact. ; , s. 201-204
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Konferensbidrag (refereegranskat)abstract
- Unbelted drivers of heavy commercial vehicles are likely to suffer chest injuries from steering wheel rim contact in frontal impacts. The aim of the present study was to investigate to what extent the current regulatory dummy, the Hybrid III, is capable of assessing the chest deflection in this load case. A Finite Element model of the dummy and its default sensors were evaluated together with chest injury criteria. The THUMS was used as a reference representing the human body. Suggestions on instrumentation and correction factors for injury criteria are proposed for use with the Hybrid III.
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| 10. |
- Holmqvist, Kristian, 1976, et al.
(författare)
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Heavy vehicle frontal sled crash test analysis chest deflection response in the Hybrid III dummy
- 2013
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Ingår i: International Journal of Crashworthiness. - : Informa UK Limited. - 1358-8265 .- 1754-2111. ; 18:2, s. 126-138
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to analyse the Hybrid III dummy chest loading in heavy vehicle frontal crashes. In total, eight truck front-to-trailer-type sled tests were performed. The Hybrid III, in driver position, was equipped with the chest deflection sensor system RibEye and its standard potentiometer sensor was compared with the RibEye deflection data. The chest impact point was established by using Fuji film impression, as well as from video data. Chest-to-steering wheel rim contact occurred in all tests. Differences in chest loading were found between the Hybrid III dummy reference test and the load case identified in this study, predominantly impact velocity, direction, distribution and location of loading. The steering wheel rim contact is the major contributor to chest deflection. The chest deformation consists of anterior/posterior compression and upward deflection of the sternal plate. The Hybrid III standard chest deflection sensor is not reliable in this load case due to the modes of sternal displacement and the single-point measurement location. Combining the RibEye system with global dummy kinematic data and accurate contact detection is required to fully assess chest deflection. New biomechanical data are needed to adapt the injury risk assessment to the identified load case.
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