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Ukraina inför parlamentsvalet (I)
The Bridge - Season 3 : A Swedish Perspective
Hårda vetenskaper löser inte mjuka utmaningar
Validation of a Swedish version of the short UPPS-P impulsive behavior scale among young adults
he UPPS-P model of impulsivity proposes that impulsivity comprises five distinct facets—negative urgency, positive urgency, lack of premeditation, lack of perseverance, and sensation seeking. The UPPS-P Impulsive Behavior Scale has been used to measure these facets. The purpose of the current study was to develop and evaluate the psychometric properties of a Swedish version of the 20-item UPPS-P I
Solution to the Problems in Scattering of Electromagnetic Waves by Obstacles
Collaborative Networks : Leveraging Local Food and Agritourism for Regional Development
Collaborative networks are widely employed as mechanisms to develop innovative responses in challenging environments. This approach has relevance in the area of regional development particularly where food production and tourism are two significant sectors underpinning regions. These two industries have conventionally operated as single sectors independent of each other. However, an inability to r
Using Co-Design to Move The Discourse of Sustainable Tourism from Theory to Practice
The ample systems-orientated rhetoric of sustainable tourism has not triggered much practical change because it is directed at the wrong level and the relevance of the discourse eludes local agents in tourism systems. Practical movement towards sustainable tourism hinges on finding tools that can aid practical moves by local tourism enterprises and, as the local contexts vary, a flexible approach
Soil and Water Conservation in Thika-Chania catchment, Kenya
Regional differences in air velocity of microclimate inside clothing and bellows effect
Despite of a crucial role of microclimate inside clothing in thermal comfort, air velocity inside clothing has been hardly reported, ever since Lewis et al (1969) demonstrated that air velocity of the still air layer on the naked human body was 0.25 m/s using colour schlieren cinephotography. This study was aimed to investigate the air velocity of microenvironment inside clothing and the bellows e
Under-reporting bicycle accidents to police in the COST TU1101 international survey: Cross-country comparisons and associated factors
Police crash reports are often the main source for official data in many countries. However, with the exception of fatal crashes, crashes are often underreported in a biased manner. Consequently, the countermeasures adopted according to them may be inefficient. In the case of bicycle crashes, this bias is most acute and it probably varies across countries, with some of them being more prone to rep
Kunskap och lärande i socialt arbete: Om socialarbetare och viljan att veta
From Agricultural Benefits to Aviation Safety : Realizing the Potential of Continent-Wide Radar Networks
Migratory animals provide a multitude of services and disservices-with benefits or costs in the order of billions of dollars annually. Monitoring, quantifying, and forecasting migrations across continents could assist diverse stakeholders in utilizing migrant services, reducing disservices, or mitigating human-wildlife conflicts. Radars are powerful tools for such monitoring as they can assess dir
Editorial : Optimizing the delivery of multiple ecosystem goods and services in agricultural systems
Who governs? : Democracy and power in an American city
American political theorist Robert Dahl's 1961 work of political theory exhibits deep levels of creative thinking. When Dahl wrote, the American system of liberal democracy was generally considered to be shaped by a small group of powerful individuals who dominate because they are wealthy and influential. But by connecting the evidence in a new way in Who Governs? Dahl argued convincingly against
Structure Preserving H-infinity Optimal PI Control
A multi-variable PI (proportional integrating) controller is proved to be optimal for an important class of control problems where performance is specified in terms of frequency weighted H-infinity norms. The problem class includes networked systems with a subsystem in each node and control action along each edge. For such systems, the optimal PI controller is decentralized in the sense that contr
Decentralised Robust Inverter-based Control in Power Systems
This paper develops a novel framework for power system stability analysis, that allows for the decentralised design of inverter based controllers. The method requires that each individual inverter satisfies a standard H∞ design requirement. Critically each requirement depends only on the dynamics of the components and inverters at each individual bus, and the aggregate susceptance of the transmiss
Two-Degree-of-Freedom Control for Trajectory Tracking and Perturbation Recovery during Execution of Dynamical Movement Primitives
Modeling of robot motion as dynamical movement primitives (DMPs) has becomean important framework within robot learning and control. The ability of DMPs to adapt online with respect to the surroundings, e.g., to moving targets, has been used and developed by several researchers. In this work, a method for handling perturbations during execution of DMPs on robots was developed. Two-degree-of-freedo
Energy Optimal Excitation of Radio-Frequency Cavity
We show how to minimize the energy required to build up the electromagnetic field in radio-frequency cavities, which will allow power savings for pulsed particle accelerators. By formulating an optimal control problem for a first-order system we obtain a solution on state-feedback form. We numerically compare the optimal solution to previous approaches.
A Riccati-Based Interior Point Method for Efficient Model Predictive Control of SISO Systems
This paper presents an algorithm for Model Predictive Control of SISO systems. Based on a quadratic objective in addition to (hard) input constraints it features soft upper as well as lower constraints on the output and an input rate-of-change penalty term. It keeps the deterministic and stochastic model parts separate. The controller is designed based on the deterministic model, while the Kalman