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Decomposing the Afternoon Effect: An Empirical Investigation of Sequential Train Ticket Auctions

The afternoon effect, i.e., that prices in a sequence of auctions with identical items are decreasing with the order in which the auctions are terminated, is a frequently observed phenomenon in empirical auction studies. Using an unsurpassed amount of data from sequential online train ticket auctions, we investigate two hitherto unexplored dimensions inherent in sequential auctions, namely, the ti

Three Pion Interferometry in the NA44 Experiment

This thesis presents a three-particle correlation analysis with pions originating from Sulphur-Lead and Lead-Lead collisions at 200 and 158 GeV/c per nucleon respectively, taken by the CERN heavy-ion experiment NA44. The genuine three-body correlation is suppressed in both colliding systems which indicates that the particle production source is partly coherent. The two-dimensional three-particle c

Introduction

Recent choir related research has different points of departure. One point of departure involves theory and methodology developed in cultural and social sciences. Another includes historical musicology. With choir as an overarching umbrella concept, the network Choir in Focus provides the scope for cooperation across national and disciplinary borders. This includes cooperation between the traditio

Future stratospheric ozone depletion will affect a subarctic dwarf shrub ecosystem

Popular Abstract in Swedish Det stratosfäriska ozonlagret håller på att förtunnas och detta kommer att leda till att mer skadlig ultraviolett-B (UV-B) strålning når ner till biosfären. För att undersöka hur detta påverkar ett subarktiskt hedekosystem har vi bestrålat ett sådant med extra UV-B strålning motsvarande 15 % ozonförtunning. Studierna har utförts på en dvärgbuskhed vid Abisko NaturvetensThe stratospheric ozone depletion and the concomitant increase in ultraviolet-B (UV-B, 280-320 nm) radiation is of global concern due to the effects of UV-B on living organisms. To investigate the effects of increased levels of UV-B, a field irradiation system was established at a subarctic dwarf shrub heath in Northern Sweden (68 °N). An ozone depletion of 15 % under clear sky conditions was simu

Direction of Arrival Estimation of Unknown Number of Wideband Signals in Unattended Ground Sensor Networks

Unattended Ground Sensor Networks (UGSN) are becoming increasingly popular for surveillance and situational awareness applications. Acoustic sensors can be used in UGSN to detect and to classify targets, and these sensors are cost efficient, easy to deploy, and above all, non-jammable since they are passive. An array of acoustic sensors can detect multiple sound sources and determine the direction

Religion och coping - om religionens roll i hanterande av kriser

Kapitlet introducerar copingteorin och hur en sådan kan hjälpa oss att förstå religionens roll vid kriser. Religionens mångdimensionalitet diskuteras och centrala begrepp inom copingteorin presenteras (signifikans, primär, sekundär och tertiär bedömning). Antaganden om copingprocessen och hur denna sammanstrålar med religion introduceras liksom olika strategier för att behålla signifikans