Filtyp
This study investigates the relationship between changes in the frequency of dwell time delays and passenger flow characteristics and the frequency of railway service during the COVID-19 pandemic. To do so we make use of automatic passenger count data from commuter trains in Southern Sweden. Our findings show that the frequency of dwell time delays decreased under COVID-19 conditions compared to t
Pallet racks used in industry are often exposed to large loads, and in some casesresistance to failure is reduced by damage or inadequate handling. The present study was undertaken with the aim of investigating a number of different parameters of importance for the load-carrying capacity of pallet racks. Mainly numerical studies, using the finite element method, are performed, but some experimenta
Thin YBa2Cu3Ox films were grown on SrTiO3 or LaAlO3 single crystals by dc-magnetron reactive sputtering in argon/oxygen gas mixtures. Deposition temperatures ranged from 540 °C to 780 °C. After deposition and subsequent cool down, films grown above 680 °C are superconducting below 86–88 K. All films are oriented with the [001] direction parallel to the [001] substrate normal. The best films have c
Interior automotive plastic components are often manufactured by injection moulding since this technique enables cost-efficient manufacturing, large design freedom, and easy integration of functions. However, to obtain a high-quality impression, it is important to produce components with uniformity in texture, colour, and gloss. Unfortunately, this is rather difficult since a large number of mater
Interest in learning in mature adulthood has become increasingly important as attention has been focused on what is seen to be an impending crisis in the near future, i.e., shortage of labour due to the ever-growing number of elderly and decreasing nativity rates. In some circles "alarmist demographics" have overshadowed an arguably more important concern, that of providing for aging individuals'
Popular Abstract in Swedish Inom området datorgrafik undersöker man hur virtuella scener kan omvandlas till verklighetstrogna bilder. För interaktiva miljöer, som exempelvis datorspel, måste en ny bild vara genererad och klar att visas på skärmen mellan 30-60 gånger i sekunden för att upplevelsen ska kännas responsiv och för att rörelser ska flyta på ett naturligt sätt. För att datorn ska hinna meThe field of computer graphics refers to the use of computers to generate realistic-looking images from virtual scenes. Graphics processing units use an algorithm known as rasterization to compute images of scenes viewed from a virtual camera. The commonly used pinhole camera model does not account for the imperfections that stem from the physical limitations in real-world cameras. This includes,
A number of policy instruments are used in order to provide consumers healthy products produced in a proper way as regards environmental impacts. The policy instruments are mainly directed to enterprises and companies producing products. Such actors are often addressed in terms of laws or regulations and represents different actors in a production chain. Policy instruments and the way they are use
Objective To determine the relative risks of prostate cancer incidence, metastasis, and mortality associated with screening by serum prostate specific antigen (PSA) levels at age 60. Design Population based cohort study. Setting General male population of Sweden taking part in a screening trial in Gothenburg or participating in a cardiovascular study, the Malmo Preventive Project. Participants The
AIM: This study aimed to evaluate the concomitant occurrence and possible association of breath-holding spells (BHS) and transient erythroblastopenia of childhood (TEC).METHODS: This population-based cohort study, carried out in Southern Sweden from 2004-2014, included patients with BHS and, or, anaemia, including TEC. The subjects were evaluated for the presence of all three conditions and the di
The glycocalyx is a carbohydrate-rich layer that lines the luminal side of the vascular endothelium. Its soluble components exist in a dynamic equilibrium with the bloodstream and play an important role in maintaining endothelial layer integrity. However, the glycocalyx can be easily damaged and is extremely vulnerable to insults from a variety of sources, including inflammation, trauma, haemorrha
In this paper, we propose the first key-recovery side-channel attack on Classic McEliece, a KEM finalist in the NIST Post-quantum Cryptography Standardization Project. Our novel idea is to design an attack algorithm where we submit special ciphertexts to the decryption oracle that correspond to cases of single errors. Decoding of such ciphertexts involves only a single entry in a large secret perm
Ground-based, high-resolution spectrographs are providing us with an unprecedented view of the dynamics and chemistry of the atmospheres of planets outside the Solar System. While there are a large number of stable and precise high-resolution spectrographs on modest-size telescopes, it is the spectrographs at observatories with apertures larger than 3.5 m that dominate the atmospheric follow-up of
The race to publish results during the outbreak of the new coronavirus (SARS-CoV-2) has highlighted the relevance of sharing data and research results more quickly and openly than the current scientific communication system, as well as the role of social media in this context. This paper aims to analyze the impact of open access on the production and dissemination of knowledge about COVID-19 in tr
IntroductionRecreational hunting in Sweden can be depicted as being embedded in two different but overlapping cultural and socio-economic contexts. One is the traditional non-commercial and stewardship-oriented form hunting, in Swedish called ‘allmoge’ hunting. It is characterised by a democratic hunting tradition where the local hunting team is ascribed a main role in wildlife management. These tThe paper is based on a study of hunting tourism enterprising in Sweden. The study examines how hunting tourism businesses in Sweden navigate in a complex social, economic and moral environment. The aim of the present paper is to identify how tensions between a market- oriented value sphere and a value sphere based on friendship- and community reciprocity are played out in hunting tourism entrepre
Objective. This study proposes a novel technique for atrial fibrillatory waves (f-waves) extraction and investigates the performance of the proposed method comparing with different f-wave extraction methods. Approach. We propose a novel technique combining a periodic component analysis (PiCA) and echo state network (ESN) for f-waves extraction, denoted PiCA-ESN. PiCA-ESN benefits from the advantag
BACKGROUND: A growing literature finds that adult mental health worsens during economic downturns. Current insights on the relationship between macroeconomic fluctuations and psychotropic medication are based on self-reported information or aggregate measures on prescriptions. This study assesses the relationship between local macroeconomic conditions and individual use of psychotropic medication
In laser spectroscopy, high photon flux can perturb the sample away from thermal equilibrium, altering its spectroscopic properties. Here, we describe an optical beam scanning apparatus that minimizes repetitive sample excitation while providing shot-to-shot sample exchange for samples such as cryostats, films, and air-tight cuvettes. In this apparatus, the beam crossing point is moved within the
The two perspectives of autonomous driving and new active safety in vehicles are complementary, and both hold promise to reduce the number of accidents and associated severe or fatal injuries. They both coincide in the recent interest in finding alternatives to traditional yaw-control systems that can utilize the full potential of the vehicle. By considering the control problem as that of lane-kee
Frailty refers to the lack of resilience and a reduction in a person’s ability to recover following a health problem, and it is increasingly becoming a challenging aspect of ageing populations.Many older adults are exposed to polypharmacy; i.e., they continue to be on medications without timely re-evaluation. Medication reviews have proven successful in managing polypharmacy in the general populat
