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Optimal recall length in survey design

Self-reported data collected Via Surveys are a key input into a wide range of research conducted by economists. It is well known that Such data are subject to measurement error that arises when respondents are asked to recall past utilisation. Survey designers Must determine the length of the recall period and face a trade-off as increasing the recall period provides more information, but increase

Environmental monitoring using optical techniques

An overview of optical techniques for environmental monitoring is presented. Range-resolved measurements of atmospheric pollutants can be performed using the differential absorption lidar technique. Fluorescence lidar allows assessment of vegetation status and also the conditions of the facades of historical buildings. Diode lasers provide particularly realistic schemes for atmospheric gas analysi

Photoneutron yields from tungsten in the energy range of the giant dipole resonance

Photoneutron production on the nuclei of high-Z components of medical accelerator heads can lead to a significant secondary dose during a course of bremsstrahlung radiotherapy, However, a quantitative evaluation of secondary neutron dose requires improved data on the photoreaction yields. These have been measured as a function of photon energy, neutron energy and neutron angle for W-nat, using tag

Diabetes mellitus and risk of prostate cancer - A focus on shared risk factors and survivor bias

Prostate cancer (PCa) is a heterogenous disease including very aggressive lethal tumors to incidentally discovered clinically insignificant tumors. Age, ethnicity, and family history are the only established risk factors. Type 2 diabetes mellitus (T2D) has been found to associate with increased overall cancer risk but with lower risk of specifically PCa. T2D is initially associated with increased

Nya gemensamma nordiska referensintervall inom klinisk kemi. Bättre bas för klinisk bedömning och samarbete

A project engaging the five Nordic countries has presented common reference intervals for the most frequently used biochemical and haematological analytes. The results are based on samples from up to 3000 healthy adult reference persons and are statistically calculated to include 95 % of the reference population’s values. Reference samples were analyzed together with commutable control materials t

Hur påverkar ökad efterfrågan av närproducerade varor Sveriges import?

As consumer interest in locally produced food increases, farmers and other producers wants to marketing their products as locally produced. A range of different certifications for environmentally friendly food have appeared. More costumers want to buy their food directly from the farmer at the same time as a more and more globalized world advocates free trade and removal of barriers to trade. By u

Analys av rullande bärighetsmätningar. Teknisk undersökning av relationer mellan vägens styvhet, materiallager och mätvärden

Bärighetsmätningar är avgörande för att bedöma vägars kapacitet att hantera ökande trafikbelastningar. Enligt Trafikverket förväntas en ökning av personbilar med 27%, bussar med 17% och godstransporter med 46% fram till år 2040. Denna prognostiserade tillväxt leder till ökat vägslitage vilket i sin tur kräver mer omfattande underhåll och komplexare åtgärder i högtrafikerade områden. Traditionellt

Coordination of water policies for quality and quantity : experiences from Nordic and Baltic countries

The European Union (EU) Water Framework Directive is of paramount importance for water management. According to the legal text, coordination with other directives like the Floods Directive is imperative and motivated by potential synergy effects. In this paper, the degree to which such coordination is achieved is evaluated for five Nordic and Baltic countries. The evaluation is based on legal docu