| 1. |
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| 2. |
- Moberg, Christina, et al.
(författare)
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De unga gör helt rätt när de stämmer staten
- 2022
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Ingår i: Aftonbladet. - 1103-9000.
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- 1 620 forskare och lärare i forskarvärlden: Vi ställer oss bakom Auroras klimatkrav
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| 3. |
- Berggren Newton, Benny
(författare)
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Business Basics : A Grounded Theory for Managing Ethical Behavior in Sales Organizations
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: Managing co-workers’ ethical behavior in sales organizations is a complex social process. To start, sales organizations incorporate several actors to manage, often simultaneously, all with their own agendas. Ethics as a topic is convoluted because it encompasses context-based scenarios which may not have clear-cut right and wrong answers. The management process is an ongoing task managers deal with on daily basis, where mismanagement can lead to severe consequences. The majority of existing research on this area tends to focus on single factors in the management process, not the whole process. While there are some research studies that presents models or integrated frameworks describing the management process, they are few in number.Aim: The aim of this study is to derive empirical concepts and thereby try to develop a theory to facilitate an understanding of the process of managing co-workers’ ethical behavior, where the purpose is to ultimately build an integrated framework. More specifically, this study aims to describe the involved actors’ main concerns and the process by which these are continuously resolved.Methodology: In order to achieve the aim, a method with an inductive approach was necessary. The orthodox Grounded Theory methodology was chosen as research approach since it can generate conceptualizations in an integrated framework which help explain the occurring social processes. Working from this approach means that the researcher develops a new theory that is grounded in empirical data, where the researcher inductively describes the social process. The empirical data was mainly derived from interviews with actors within the field. The data was collected, coded and conceptualized in an overlapping procedure until an empirically derived theory emerged After the emergence of the theory, the empirical data was validated with existing academic literature.Findings: The core category in this study is Business Basics and concerns the desire to continuously conduct business where the management of ethical behavior is a fundamental basis to achieve this. Five distinct categories, all related to the core category were revealed: Bureaucratization, Relationship Investing, Educationing, Monetary Managing and Intuiting. These categories are expressed in social and dynamic processes. They represent different activities, tools, influences and practices that managers can adopt in order to reach their main concern.Contribution: As a contribution, this dissertation provides an integrated framework based on the actors own subjective experiences, describing the dynamic and social processes of managing co-workers ethical behavior in sales organizations.
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| 4. |
- de Zwarte, Sonja M. C., et al.
(författare)
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Intelligence, educational attainment, and brain structure in those at familial high-risk for schizophrenia or bipolar disorder
- 2022
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Ingår i: Human Brain Mapping. - : John Wiley & Sons. - 1065-9471 .- 1097-0193. ; 43:1, s. 414-430
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Tidskriftsartikel (refereegranskat)abstract
- First-degree relatives of patients diagnosed with schizophrenia (SZ-FDRs) show similar patterns of brain abnormalities and cognitive alterations to patients, albeit with smaller effect sizes. First-degree relatives of patients diagnosed with bipolar disorder (BD-FDRs) show divergent patterns; on average, intracranial volume is larger compared to controls, and findings on cognitive alterations in BD-FDRs are inconsistent. Here, we performed a meta-analysis of global and regional brain measures (cortical and subcortical), current IQ, and educational attainment in 5,795 individuals (1,103 SZ-FDRs, 867 BD-FDRs, 2,190 controls, 942 schizophrenia patients, 693 bipolar patients) from 36 schizophrenia and/or bipolar disorder family cohorts, with standardized methods. Compared to controls, SZ-FDRs showed a pattern of widespread thinner cortex, while BD-FDRs had widespread larger cortical surface area. IQ was lower in SZ-FDRs (d = -0.42, p = 3 × 10-5 ), with weak evidence of IQ reductions among BD-FDRs (d = -0.23, p = .045). Both relative groups had similar educational attainment compared to controls. When adjusting for IQ or educational attainment, the group-effects on brain measures changed, albeit modestly. Changes were in the expected direction, with less pronounced brain abnormalities in SZ-FDRs and more pronounced effects in BD-FDRs. To conclude, SZ-FDRs and BD-FDRs show a differential pattern of structural brain abnormalities. In contrast, both had lower IQ scores and similar school achievements compared to controls. Given that brain differences between SZ-FDRs and BD-FDRs remain after adjusting for IQ or educational attainment, we suggest that differential brain developmental processes underlying predisposition for schizophrenia or bipolar disorder are likely independent of general cognitive impairment.
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| 5. |
- Fjelde, Hanne, 1978-, et al.
(författare)
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Introducing the Ethnic One-Sided Violence Dataset
- 2021
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Ingår i: Conflict Management and Peace Science. - : SAGE Publications. - 0738-8942 .- 1549-9219. ; 38:1, s. 109-126
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Tidskriftsartikel (refereegranskat)abstract
- This article introduces the Ethnic One-Sided Violence dataset (EOSV) that provides information on the ethnic identity of civilian victims of direct and deliberate killings by state and non-state actors from 1989 to 2013. The EOSV dataset disaggregates the civilian victims in the one-sided violence dataset from the Uppsala Conflict Data Program by identifying which ethnic group they belong to, using the list of politically relevant ethnic groups from the Ethnic Power Relations data. By providing information on the ethnic targets of violence, EOSV enables researchers to explore new questions about the logic and dynamics of violence against civilians.
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| 6. |
- Greczynski, Grzegorz, et al.
(författare)
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X-ray photoelectron spectroscopy of thin films
- 2023
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Ingår i: NATURE REVIEWS METHODS PRIMERS. - : SPRINGERNATURE. - 2662-8449. ; 3:1
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Tidskriftsartikel (refereegranskat)abstract
- X-ray photoelectron spectroscopy (XPS) is a popular analytical technique in materials science as it can assess the surface chemistry of a broad range of samples. This Primer concerns best practice in XPS analysis, aimed at both entry-level and advanced users, with a focus on thin film samples synthesized under vacuum conditions. The high surface to volume ratio of thin films means that factors such as substrate choice and air exposure time are important for the final result. Essential concepts are introduced, such as binding energy, photoelectric effect, spectral referencing and chemical shift, as well as practical aspects including surface sensitivity, probing depth, energy resolution, sample handling and sputter etching. Correct procedures for experimental planning, instrument set-up, sample preparation, data acquisition, results analysis and presentation are reviewed in connection with physical principles and common applications. Typical problems, including charging, spectral overlap, sputter damage and binding energy referencing, are discussed along with possible solutions or workarounds. Finally, a workflow is presented for arriving at high-quality results. X-ray photoelectron spectroscopy (XPS) can be used to investigate chemical bonding and elemental composition. This Primer discusses how XPS can be used to characterize thin films, including key considerations for sample preparation, experimental set-up and data analysis.
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| 7. |
- Hultman, Erik, et al.
(författare)
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A robotized 6-DOF dry test rig for wave power
- 2023
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Ingår i: Sustainable Energy Technologies and Assessments. - : Elsevier. - 2213-1388 .- 2213-1396. ; 59
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Tidskriftsartikel (refereegranskat)abstract
- Wave power has the potential to contribute significantly to sustainability by reducing our global dependence on fossil fuels. Due to harsh conditions and high costs associated with offshore testing, lab experiments are favourable for resource-efficient validation and optimization in developing Wave Energy Converter (WEC) technologies. The limited scale and availability of existing wave tanks, and the limited flexibility of existing dry test rigs does however put significant restraints on such experiments. In this paper we introduce an alternative novel robotized dry test rig concept for wave power, evaluate its performance and discuss its potential. A full-scale robotized dry test rig demonstrator is constructed and used for experiments with a WEC prototype device. High motion flexibility and accuracy is thereby validated, also for repeating recorded wave and buoy motions. Compared to other dry test rigs, no special components were used and the motion trajectories were defined in full 6-Degrees-Of-Freedom. Two real-time hydrodynamic motion response methods are also demonstrated in the test rig, enabling emulation of actual offshore operation as well as development of advanced WEC control strategies. With a larger industrial robot manipulator, the introduced test rig concept could achieve realistic scaled force and power experiments with most point absorber WECs.
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| 8. |
- Hultman, Erik
(författare)
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Introducing robotized stator cable winding to rotating electric machines
- 2022
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Ingår i: Machines. - : MDPI AG. - 2075-1702. ; 10:8
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Tidskriftsartikel (refereegranskat)abstract
- Following environmental concerns and the rapid digitalization of our society, we are currently experiencing an extensive electrification and industrial revolution. High numbers of electric machines thus need to be assembled for varying applications, including vehicle propulsion and renewable energy conversion. Cable winding is an alternative stator winding technology for electric machines that has been utilized for such applications, so far in smaller series or in prototype machines. The presented work introduces the first concept for automated stator cable winding of rotating electric machines. This concept could enable higher production volumes of cable wound machines and a unique flexibility in handling different machines, in line with Industry 4.0. Robotized stator cable winding is evaluated here for five very different rotating machine designs, through simulations and analytical extrapolation of previous experimental winding results. Potential cycle time and assembly cost savings are indicated compared to manual and lower volume conventional automation, while it is not possible to compete in the present form with existing very high-volume conventional winding automation for smaller machines. Future experimental work is pointed out on handling larger winding cables and special machine designs, and on increased robustness and optimization.
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| 9. |
- Hultman, Erik, et al.
(författare)
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Learnings from the rapid online transition of a real-world project task-based engineering course
- 2022
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Ingår i: 2022 IEEE Frontiers in Education Conference (FIE). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781665462457 - 9781665462440
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Konferensbidrag (refereegranskat)abstract
- This Innovative Practice Full Paper presents the results and learnings from a rapid and forced transition to online teaching of a campus-based and practical lab exercise intense course in robot engineering. Founded in previous pedagogical development work, we continued with activating and varied teaching methods connected through integrated project tasks. The online transition is evaluated from student course evaluations, examination results and the teachers’ experiences from ten campus course occasions and four online course occasions during ten years. The paper focuses specifically on the combination of an innovative online lecturing format and fully virtual robot lab exercises. Our aim is to present learnings of interest for the engineering education community. The results highlight a successful and appreciated online course transition, with possibly improved student learning. In particular the prerecorded video lectures were praised, the virtual labs was similarly appreciated as campus labs and it was demonstrated that online robot programming can be performed virtually, while practical lab exercises and study visits were still missed.
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| 10. |
- Ovaskainen, Otso, et al.
(författare)
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Global Spore Sampling Project: A global, standardized dataset of airborne fungal DNA
- 2024
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Ingår i: Scientific Data. - 2052-4463. ; 11
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Tidskriftsartikel (refereegranskat)abstract
- Novel methods for sampling and characterizing biodiversity hold great promise for re-evaluating patterns of life across the planet. The sampling of airborne spores with a cyclone sampler, and the sequencing of their DNA, have been suggested as an efficient and well-calibrated tool for surveying fungal diversity across various environments. Here we present data originating from the Global Spore Sampling Project, comprising 2,768 samples collected during two years at 47 outdoor locations across the world. Each sample represents fungal DNA extracted from 24 m3 of air. We applied a conservative bioinformatics pipeline that filtered out sequences that did not show strong evidence of representing a fungal species. The pipeline yielded 27,954 species-level operational taxonomic units (OTUs). Each OTU is accompanied by a probabilistic taxonomic classification, validated through comparison with expert evaluations. To examine the potential of the data for ecological analyses, we partitioned the variation in species distributions into spatial and seasonal components, showing a strong effect of the annual mean temperature on community composition.
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| 11. |
- Salar, Dana, et al.
(författare)
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Demonstrating real-time hydrodynamic motion response in force control for regular waves in a robotized dry test rig with a point-absorber WEC
- 2023
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Konferensbidrag (refereegranskat)abstract
- A 6-Degrees-Of-Freedom robotized dry test rig has been developed at Uppsala University to test point absorbing WECs (Wave Energy Converters). Using a six joint industrial robot as a buoy movement emulator, the robot's outermost point (joint 6) is connected to the wire from the generator concept WEC PTO (Power Take-Off). The robot's movement in joint 6 thus corresponds to the buoy movement on the sea surface. The test rig can be used for various point absorbing WEC PTO units. In this project, the test rig has been used with a WEC-PTO prototype. The point absorbing WEC-LRTC concept is being developed at Uppsala University. The generator concept is made up of two identical rotating generators. A wire is used as a connection between the generator concept at the seabed and a buoy on the sea surface. The goal of this article is to demonstrate and evaluate how the test rig interacts with the LRTC-WEC PTO in regular waves. In the presented experiments, a hydrodynamic model with force control method has been used. The results show a clear difference in the use of the hydrodynamic model with different sizes of the buoy. The test rig with the force control model can be used easily to test different theoretical buoys and different load settings for WEC PTOs. Effective experiments can be performed with real PTO forces instead of simplified simulations. Future work is to experiment with the position control method and also experiments with irregular waves.
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| 12. |
- Salar, Dana, 1985-, et al.
(författare)
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Low-RPM torque converter (LRTC) with Integrated direct shaft flywheel
- 2023
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Ingår i: International Marine Energy Journal. - 2631-5548. ; 6:1, s. 1-10
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Tidskriftsartikel (refereegranskat)abstract
- The low-RPM Torque Converter (LRTC) is a rotating generator concept for use on the seabed with the driving force from sea waves motion on the sea surface. This concept is built up of two identical generators connected opposite each other via a spring drum with a built-in ball bearing clutch. The drum is connected to a buoy on the sea surface via a wire, the wire is rolled around the spring drum. With sea waves, the buoy moves either upwards or downwards and pulls the wire upwards or downwards. This movement causes the generators to spin.This article presents an upgrade of the LRTC generator concept and upgraded measurement system, both hardware and software.A flywheel system of the thin-disc type has been designed for direct connection to the generator's rotor shaft and an electronic measuring system has also been developed for more accurate measurements and minor disturbances.More detailed tests have been performed both for the purpose of comparing the systems and to explore the performance of the generator concept in more detail.Three different experiments have been done in this article. The first two experiments were performed to investigate the performance of the flywheel and to see the performance of the LRTC system with and without flywheel.The third experiment investigated the optimization of the flywheel mass by increasing the mass of the flywheel with the addition of more thin discs.All movements are simulated with a six-joint industrial robot. Several sinusoidal types of wave motions have been simulated with different time periods and also several real wave climate motions (data taken from fields) have been simulated with the robot. The experiments show that the addition of the flywheel in the LRTC system provides advantages in increasing both peak power, average output power and also softens the output power oscillation.
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| 13. |
- Savin, Andrej, et al.
(författare)
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Low-RPM Torque Converter (LRTC)
- 2021
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Ingår i: Energies. - : MDPI. - 1996-1073. ; 14:16
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Tidskriftsartikel (refereegranskat)abstract
- The concept concerned in this paper is based on energy conversion of the ocean waves via rotational generators. The objective of this research is to develop a new type of slow-motion converter. The LRTC device consists of a drum that is connected via wire to a floating buoy. The drum is connected to rotary generators. The generators are heavily braked when the direction of movement changes (up/down); this is because the generators have been charged the maximum load in order to obtain maximum output power. For upcoming improvement, the generators should have some power storage as flywheel. In the future experiments, the torque converter can even be tuned to rotate in resonance with the incoming waves, strongly increasing power absorption. Constant force springs are applied for this purpose. The focus of this project is, therefore, a new generation of wave power device for utility-scale energy conversion offering a cost of energy that can compete with established energy resources.
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