| 1. |
- Abay, Zelalem
(författare)
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The signalling role of voluntary ESG assurance
- 2022
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Ingår i: International Journal of Managerial and Financial Accounting. - : Inderscience Publishers. - 1753-6715 .- 1753-6723. ; :3, s. 265-294
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study is to examine the role of independent third-party environment, social, and governance (ESG) assurance in signalling higher ESG performance. While testing the hypothesis, a liner regression is applied using data from Thomson Reuters ESG scores and global reporting initiative database from a sample of 645 unique European firms over the period of 2012-2017. Firms with third-party assurance are found to have a significantly higher ESG performance than firms with no assurance. This study offers new evidence on the signalling value of an independent third party ESG assurance in differentiating ESG performances and confirms the incentive that high performing firms could use to separate from their counterparts with poor performance in a separating equilibrium. Copyright © 2022 Inderscience Enterprises Ltd.
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| 2. |
- Abbaspour, S., et al.
(författare)
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Real-Time and Offline Evaluation of Myoelectric Pattern Recognition for the Decoding of Hand Movements
- 2021
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Ingår i: Sensors. - : MDPI AG. - 1424-8220. ; 21:16
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Tidskriftsartikel (refereegranskat)abstract
- Pattern recognition algorithms have been widely used to map surface electromyographic signals to target movements as a source for prosthetic control. However, most investigations have been conducted offline by performing the analysis on pre-recorded datasets. While real-time data analysis (i.e., classification when new data becomes available, with limits on latency under 200-300 milliseconds) plays an important role in the control of prosthetics, less knowledge has been gained with respect to real-time performance. Recent literature has underscored the differences between offline classification accuracy, the most common performance metric, and the usability of upper limb prostheses. Therefore, a comparative offline and real-time performance analysis between common algorithms had yet to be performed. In this study, we investigated the offline and real-time performance of nine different classification algorithms, decoding ten individual hand and wrist movements. Surface myoelectric signals were recorded from fifteen able-bodied subjects while performing the ten movements. The offline decoding demonstrated that linear discriminant analysis (LDA) and maximum likelihood estimation (MLE) significantly (p < 0.05) outperformed other classifiers, with an average classification accuracy of above 97%. On the other hand, the real-time investigation revealed that, in addition to the LDA and MLE, multilayer perceptron also outperformed the other algorithms and achieved a classification accuracy and completion rate of above 68% and 69%, respectively.
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| 3. |
- Afzal, Wasif, et al.
(författare)
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An experiment on the effectiveness and efficiency of exploratory testing
- 2015
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Ingår i: Empirical Software Engineering. - : Springer. - 1382-3256 .- 1573-7616. ; 20:3, s. 844-878
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Tidskriftsartikel (refereegranskat)abstract
- The exploratory testing (ET) approach is commonly applied in industry, but lacks scientific research. The scientific community needs quantitative results on the performance of ET taken from realistic experimental settings. The objective of this paper is to quantify the effectiveness and efficiency of ET vs. testing with documented test cases (test case based testing, TCT). We performed four controlled experiments where a total of 24 practitioners and 46 students performed manual functional testing using ET and TCT. We measured the number of identified defects in the 90-minute testing sessions, the detection difficulty, severity and types of the detected defects, and the number of false defect reports. The results show that ET found a significantly greater number of defects. ET also found significantly more defects of varying levels of difficulty, types and severity levels. However, the two testing approaches did not differ significantly in terms of the number of false defect reports submitted. We conclude that ET was more efficient than TCT in our experiment. ET was also more effective than TCT when detection difficulty, type of defects and severity levels are considered. The two approaches are comparable when it comes to the number of false defect reports submitted.
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| 4. |
- Afzal, Wasif, et al.
(författare)
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On using grey literature and google scholar in systematic literature reviews in software engineering
- 2020
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Ingår i: IEEE Access. - United States. - 2169-3536. ; 8, s. 36226-36243
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Tidskriftsartikel (refereegranskat)abstract
- © 2013 IEEE. Context: The inclusion of grey literature (GL) is important to remove publication bias while gathering available evidence regarding a certain topic. The number of systematic literature reviews (SLRs) in Software Engineering (SE) is increasing but we do not know about the extent of GL usage in these SLRs. Moreover, Google Scholar is rapidly becoming a search engine of choice for many researchers but the extent to which it can find the primary studies is not known. Objective: This tertiary study is an attempt to i) measure the usage of GL in SLRs in SE. Furthermore this study proposes strategies for categorizing GL and a quality checklist to use for GL in future SLRs; ii) explore if it is feasible to use only Google Scholar for finding scholarly articles for academic research. Method: We have conducted a systematic mapping study to measure the extent of GL usage in SE SLRs as well as to measure the feasibility of finding primary studies using Google Scholar. Results and conclusions: a) Grey Literature: 76.09% SLRs (105 out of 138) in SE have included one or more GL studies as primary studies. Among total primary studies across all SLRs (6307), 582 are classified as GL, making the frequency of GL citing as 9.23%. The intensity of GL use indicate that each SLR contains 5 primary studies on average (total intensity of GL use being 5.54). The ranking of GL tells us that conference papers are the most used form 43.3% followed by technical reports 28.52%. Universities, research institutes, labs and scientific societies together make up 67.7% of GL used, indicating that these are useful sources for searching GL. We additionally propose strategies for categorizing GL and criteria for evaluating GL quality, which can become a basis for more detailed guidelines for including GL in future SLRs. b) Google Scholar Results: The results show that Google Scholar was able to retrieve 96% of primary studies of these SLRs. Most of the primary studies that were not found using Google Scholar were from grey sources.
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| 5. |
- Afzal, Wasif, et al.
(författare)
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Software Test Process Improvement Approaches: A Systematic Literature Review and an Industrial Case Study
- 2016
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Ingår i: Journal of Systems and Software. - : Elsevier BV. - 0164-1212. ; 111, s. 1-33
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Tidskriftsartikel (refereegranskat)abstract
- Software Test Process Improvement (STPI) approaches are frameworks that guide software development organizations to improve their software testing process. We have identified existing STPI approaches and their characteristics (such as completeness of development, availability of information and assessment instruments, and domain limitations of the approaches) using a systematic literature review (SLR). Furthermore, two selected approaches (TPI Next and TMMi) are evaluated with respect to their content and assessment results in industry. As a result of this study, we have identified 18 STPI approaches and their characteristics. A detailed comparison of the content of TPI Next and TMMi is done. We found that many of the STPI approaches do not provide sufficient information or the approaches do not include assessment instruments. This makes it difficult to apply many approaches in industry. Greater similarities were found between TPI Next and TMMi and fewer differences. We conclude that numerous STPI approaches are available but not all are generally applicable for industry. One major difference between available approaches is their model representation. Even though the applied approaches generally show strong similarities, differences in the assessment results arise due to their different model representations.
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| 6. |
- Akay, Alpaslan, 1975, et al.
(författare)
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Offshoring and well-being of workers
- 2022
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Ingår i: Journal of Economic Behavior and Organization. - : Elsevier BV. - 0167-2681 .- 1879-1751. ; 200, s. 388-407
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Tidskriftsartikel (refereegranskat)abstract
- Using long panels of industry-specific offshoring information and subjectively reported well-being datasets mainly from Germany, which is also supported by datasets from the UK and Australia, this paper aims to investigate the relationship between offshoring and workers' subjective well-being in the source country. We employ panel data fixed-effects models with time-variant personality measures and industry-specific measures to alleviate the bias stemming from the non-random sorting of individuals in industries. Our findings suggest that offshoring negatively relates to workers' subjective well-being. The result is unexceptionally consistent across Germany, the UK, and Australia, and the effect is larger in business services and among high-skilled workers. We extensively discuss how contextual "fear-factors" prevailing in the source countries interact with the angst generated by the negative framing of offshoring. To single out such angst, we first show that objective and subjective job security concerns, job characteristics, and labor market conditions only marginally relate to the well-being effect of offshoring. Then, we investigate how the effect of offshoring on well-being is amplified by a larger set of contextual factors pertaining to temporary economic shocks, negative narratives about offshoring during electoral cycles, partisan political preferences, and high immigration rates. Finally, we show that a recent skill upgrade significantly diminishes the negative effect of offshoring on well-being.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )
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| 7. |
- Almquist, Martin, et al.
(författare)
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Order-preserving interpolation for summation-by-parts operators at nonconforming grid interfaces
- 2019
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Ingår i: SIAM Journal of Scientific Computing. - : Society for Industrial and Applied Mathematics Publications. - 1064-8275 .- 1095-7197. ; 41:2, s. A1201-A1227
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Tidskriftsartikel (refereegranskat)abstract
- We study nonconforming grid interfaces for summation-by-parts finite difference methods applied to partial differential equations with second derivatives in space. To maintain energy stability, previous efforts have been forced to accept a reduction of the global convergence rate by one order, due to large truncation errors at the nonconforming interface. We avoid the order reduction by generalizing the interface treatment and introducing order-preserving interpolation operators. We prove that, given two diagonal-norm summation-by-parts schemes, order-preserving interpolation operators with the necessary properties are guaranteed to exist, regardless of the grid-point distributions along the interface. The new methods retain the stability and global accuracy properties of the underlying schemes for conforming interfaces.
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| 8. |
- Andersson, Henrik, 1968-, et al.
(författare)
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Acute coronary syndrome in relation to the occurrence of associated symptoms : A quantitative study in prehospital emergency care.
- 2017
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Ingår i: International Emergency Nursing. - : Elsevier BV. - 1755-599X .- 1878-013X. ; 33, s. 43-47
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: Acute chest pain is a common symptom among prehospital emergency care patients. Therefore, it is crucial that ambulance nurses (ANs) have the ability to identify symptoms and assess patients suffering from acute coronary syndrome (ACS). The aim of this study is to explore the occurrence of dyspnoea and nausea and/or vomiting in the prehospital phase of a suspected ACS and the associations with patients' outcome.METHODS: This study has a quantitative design based on data from hospital records and from a previous interventional study (randomised controlled trial) including five Emergency Medical Service (EMS) systems in western Sweden in the years 2008-2010.RESULTS: In all, 1836 patients were included in the interventional study. Dyspnoea was reported in 38% and nausea and/or vomiting in 26% of patients. The risk of death within one year increased with the presence of dyspnoea. The presence of nausea and/or vomiting increased the likelihood of a final diagnosis of acute myocardial infarction (AMI).CONCLUSION: This study shows that dyspnoea, nausea and/or vomiting increase the risk of death and serious diagnosis among ACS patients. This means that dyspnoea, nausea and/or vomiting should influence the ANs' assessment and that special education in cardiovascular nursing is required.
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| 9. |
- Andersson Hagiwara, Magnus, et al.
(författare)
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Adverse events in prehospital emergency care: A trigger tool study
- 2019
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Ingår i: BMC Emergency Medicine. - : Springer Science and Business Media LLC. - 1471-227X. ; 19:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Prehospital emergency care has developed rapidly during the past decades. The care is given in a complex context which makes prehospital care a potential high-risk activity when it comes to patient safety. Patient safety in the prehospital setting has been only sparsely investigated. The aims of the present study were 1) To investigate the incidence of adverse events (AEs) in prehospital care and 2) To investigate the factors contributing to AEs in prehospital care. Methods: We used a retrospective study design where 30 randomly selected prehospital medical records were screened for AEs each month in three prehospital organizations in Sweden during a period of one year. A total of 1080 prehospital medical records were included. The record review was based on the use of 11 screening criteria. Results: The reviewers identified 46 AEs in 46 of 1080 (4.3%) prehospital medical records. Of the 46 AEs, 43 were classified as potential for harm (AE1) (4.0, 95% CI = 2.9-5.4) and three as harm identified (AE2) (0.3, 95% CI = 0.1-0.9). However, among patients with a life-threatening condition (priority 1), the risk of AE was higher (16.5%). The most common factors contributing to AEs were deviations from standard of care and missing, incomplete, or unclear documentation. The most common cause of AEs was the result of action(s) or inaction(s) by the emergency medical service (EMS) crew. Conclusions: There were 4.3 AEs per 100 ambulance missions in Swedish prehospital care. The majority of AEs originated from deviations from standard of care and incomplete documentation. There was an increase in the risk of AE among patients who the EMS team assessed as having a life-threatening condition. Most AEs were possible to avoid. © 2019 The Author(s).
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| 10. |
- Appelo, D., et al.
(författare)
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An energy-based discontinuous Galerkin method for coupled elasto-acoustic wave equations in second-order form
- 2019
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Ingår i: International Journal for Numerical Methods in Engineering. - : Wiley. - 0029-5981 .- 1097-0207. ; 119:7, s. 618-638
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Tidskriftsartikel (refereegranskat)abstract
- We consider wave propagation in a coupled fluid-solid region separated by a static but possibly curved interface. The wave propagation is modeled by the acoustic wave equation in terms of a velocity potential in the fluid, and the elastic wave equation for the displacement in the solid. At the fluid solid interface, we impose suitable interface conditions to couple the two equations. We use a recently developed energy-based discontinuous Galerkin method to discretize the governing equations in space. Both energy conserving and upwind numerical fluxes are derived to impose the interface conditions. The highlights of the developed scheme include provable energy stability and high order accuracy. We present numerical experiments to illustrate the accuracy property and robustness of the developed scheme.
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