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Sustainable mobility and transportation systems are important to, among other things, reduce greenhouse gas emissions. However, the conditions for sustainable mobility differ between different geographies, in particular between urban and rural areas. Therefore, this qualitative case study examines the planning for sustainable mobility in the countryside of Västra Götaland to develop an understandi
Additive manufacturing by laser-based powder bed fusion is a promising technique for bulk metallic glass production. But, reheating by deposition of subsequent layers may cause local crystallisation of the alloy. To investigate the crystalline phase evolution during laser scanning of a Zr-based metallic glass-forming alloy, a simulation strategy based on the finite element method and the classical
Biofuels are considered to be an environmental friendly alternative to fossil fuels as they have the potential to reduce the global emissions of greenhouse gases. Studies have showed that an increased use of ethanol could alter the atmospheric chemical composition and enhance urban ozone concentrations resulting in higher human mortality rates. In recent years furanic compounds have been considere
Numerical simulations have been conducted to investigate the effects of pin-fin arrangement and jet Reynolds number on heat transfer enhancement and flow characteristics of a concave confined jet impingement cooled surface conjugated with pin-fins. The results without a pin-fin are used as a baseline. Vortices and different sections of streamlines in the channel are employed to understand the flow
High performance powder-based Ni-based superalloys exhibit exceptional in-service properties at elevated temperature, however this leads to reduced machinability and the potential for significant machining induced damage. Field assisted sintering technology (FAST) is capable of consolidating powder rapidly and efficiently, allowing for precise control of the microstructure via the dissolution of s
This study compares the performance of different models used to assess the local wind near-surface conditions at an agricultural site in Scania, southern Sweden. The methods are: (a) the WASP model (Wind Analysis and Application Program), (b) separate linear regressions of the two wind vector components, (c) a regression model based on vector correlation, and (d) linear regression of scalar wind.
Protected areas serve the purposes of protecting nature and providing possibilities for outdoor recreation. In an area with natural assets, protected or not, different interests are interacting. The aim of this study was to investigate whether nature conservation could enhance environmental benefits as well as provide economic and social benefits to a region. Another aim was to investigate the de
This case-study explores the changing norms guiding news production in the People's Republic of China. Through a content analysis of bird flu coverage in three best-selling Guangzhou newspapers (the Guangzhou Daily, the Yangcheng Evening News and the Southern Metropolis Daily), the news coverage of the bird flu is compared to the Party news genre, previously dominant in China in which news is
This essay mainly examines the Police's crime prevention work in the city of Uddevalla. Through interviews and a document study, successes and setbacks in crime prevention work and collaboration between different actors are explored. Crime prevention is constantly evaluated, studied and examined, both internally and externally, but it appears that it is difficult to arrive at a clear answer ab
In countries such as the United States and the United Kingdom, the Covid-19 pandemic has caused the highest level of inflation since several decades. Explanations are sought after and disruptions of supply chains have been labeled the cause by many politicians. However, the empirical literature regarding the topic is limited. Hence, in order to extend the literature, this paper aims to investigate
An efficient routing using a virtual backbone (VB) network is one of the most significant improvements in the wireless sensor network (WSN). One promising method for selecting this subset of network nodes is by finding the minimum connected dominating set (MCDS), where the searching space for finding a route is restricted to nodes in this MCDS. Thus, finding MCDS in a WSN provides a flexible low-c
Heat transfer on the endwall upstream of the junction of the stator vane/rotor blade with the hub becomes very high due to the vortices generated as a result of an adverse pressure gradient. Control of this high heat transfer is very vital for safe operation of gas turbines. In the present experimental study, a pair of vortex generators is employed to reduce the high heat transfer on the endwall c
This paper considers the problem of recovering either a low rank matrix or a sparse vector from observations of linear combinations of the vector or matrix elements. Recent methods replace the non-convex regularization with ℓ1 or nuclear norm relaxations. It is well known that this approach recovers near optimal solutions if a so called restricted isometry property (RIP) holds. On the other hand i
The article examines the extent of and factors behind Civil Society Organizations’ (CSOs’) use of social media to influence politics compared with nondigital political strategies, that is, using the traditional media and demonstrations. Taking stock of previous research on information and communication technologies, social media, and political influence, the relevance of four sets of factors is te
Swedish municipalities have traditionally had significant powers and played a major role in implementing national energy strategies. This paper describes the factors influencing development of municipal climate and energy plans in five Swedish municipalities and assesses the relevance and importance of these factors from theoretical and practical perspectives. The questions raised in the paper are
Time synchronisation is crucial for distributed systems, and particularly for Wireless Sensor Networks (WSNs), where each node is executing concurrent operations to achieve a real-time objective. However, synchronisation is quite difficult to achieve in WSNs, due to the unpredictable deployment conditions and to physical effects like thermal stress, that cause drifts in the local node clocks. As a
A third of Sweden’s two million single-family houses were built in the period 1961-1980, and many of them are in need of renovation. Energy use in these houses is high, and they are fairly homogeneous in technical terms. A previous study of four reference houses showed that final energy use could be reduced in theory by approximately 65-75 % after renovation, by implementing conventional passive h
Late Sandbian to early Katian δ13Ccarb chemostratigraphy has in Norway been described in only two previous reports that dealt with two geographically rather widely separated areas, namely the Oslo-Asker district and the Nes-Hamar district. No data have been available from the Ordovician outcrop areas between these districts that could help clarify the partly unclear regional stratigraphic relation
In this article, the success of a risk communication programme conducted in two municipalities in Sweden is evaluated. The communication efforts were initiated in order to comply with the Seveso II Directive, passed as a national law in July 1999. Data from two different questionnaires are used. Between the distribution of the two questionnaires, an information campaign took place in the communiti
