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The viability of a renewable electricity system depends on a relatively small share of hydropower storage resources to regulate climate variations and the spatially uneven distribution of renewable energy. By spatio-temporal coordination of hydropower production over larger regions, the energy storage demand will be reduced and contribute to a “virtual” energy storage gain that in Europe was found
Today, acquisition, creation and utilisation of knowledge are the key factors explaining economic development. Firms must constantly employ new knowledge and combine different types of knowledge in their activities to maintain competitiveness. This thesis examines the knowledge economy from two perspectives. The first focuses on the role of geographical proximity for interactive knowledge creation
Den statliga LSS-utredningen tycks inte ta hänsyn till FN:s konvention om rättigheter för personer med funktionsnedsättning, skriver forskarna Anna Bruce och Anna Nilsson.
The design of the stator insulation system for a traction machine used in electric vehicles is a challenge due to the tight requirements set on compact size, high dynamic stresses and a lack of automotive specific insulation standards. A poorly designed stator insulation can lead to safety issues and stator faults. Approximately, 20-30% of faults in traction machines are stator faults. In order to
Grain-128AEAD is a stream cipher supporting authenticated encryptionwith associated data, and it is currently in round 2 of the NIST lightweight cryptostandardization process. In this paper we present and benchmark software implementations of the cipher, targeting constrained processors. The processors chosen arethe 8-bit (AVR) and 16-bit (MSP) processors used in the FELICS-AEAD framework.Both hig
Nickel-based superalloys are typical materials used in components of aeroengines and gas turbine machinery. The strength properties of these alloys at high temperatures are crucial not only to the performance (e.g., power generation efficiency, energy consumption, and greenhouse gas emissions) of aeroengines and industrial gas turbines, but also to machinability during component manufacturing. Thi
This paper analyses and compares a set of case studies on ecosystem services (ES) mapping and assessment with the purpose of formulating lessons learned and recommendations. Fourteen case studies were selected during the EU Horizon 2020 “Coordination and Support Action” ESMERALDA to represent different policy- and decision-making processes throughout the European Union, across a wide range of them
After demonstration of a 23% power conversion efficiency, a high operational stability is the next most important scientific and technological challenge in perovskite solar cells (PSCs). A potential failure mechanism is tied to a bias-induced ion migration, which causes current–voltage hysteresis and a decay in the device performance over time. Herein, alkali salts are shown to mitigate hysteresis
News satire plays with the political in ways that transgress journalistic as well as social and moral boundaries. But the ways in which audiences in different contexts engage with news satire are under-researched, despite the implications of the genre’s role for contemporary citizenship. This article asks how Swedish young adult audiences construct and negotiate news satire’s inherent transgressio
This paper analyzes the determinants of the labor-capital split in national incomefor 20 countries since the late 1800s. Our main identification strategy focuseson unique historical quasi-experimental events: i) the introduction of universalsuffrage, ii) close election wins of left-wing governments, iii) decolonization, iv)unionization shocks, and v) wars. We also run instr
Plasma gamma-glutamyltransferase (GGT) was suggested to reflect the level of systemic oxidative stress. Oxidative stress induces changes in arterial structure and function and contributes to the development of hypertension. Therefore, GGT may be associated with arterial remodeling and blood pressure (BP) increment, even in absence of disease. To test this hypothesis, we evaluated, in 825 healthy s
In recent years, it has been recognized that the seismic wave equation solved with a finite-difference method in time causes a predictable and removable error through the use of so-called time-dispersion transforms. These transforms were thought not to apply to visco-elastic media. However, in this paper we demonstrate that the time-dispersion transforms remain applicable when the visco-elastic wa
Signal apparition is a recent signal processing advance that has numerous applications in seismic data acquisition and processing. In this paper we review the basic principles of signal apparition and discuss applications related to simultaneous source acquisition. We discuss the generalization of the technique to large number of sources and the application in a full 3D configuration enabling larg
Introduction: Movement quality, represented in unrestricted movements, flow and pleasure, is often lacking in people with autism. One aspect is the non-verbal expression of the present emotional and psychological state of an individual. Purpose: To describe the meaning of movement quality in autism, as experienced by specialized physiotherapists. Method: Ten physiotherapists were interviewed. The
In the early 1960s, the first issues of the Scandinavian Roll of Arms were published. The initiative was taken in the Scanian branch of Societas Heraldica Scandinavica, but the roll was published independently. In this article, the development of the Scandinavian Roll of arms is described and discussed, with a certain focus on the different views on how a Nordic roll of arms was to be organised an
