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The procurement process can be defined as all the activities required in getting a product or a service from the supplier to a final destination. It encompasses the purchasing function, storing, transportation and manages the relations between suppliers and internal customers. It is a cyclical process involving the following activities: analysis, planning, implementation, and measurement. The perf

This report focuses on the use of egress models to assess the optimal strategy in the case of total evacuation in high-rise buildings. A model case study made of two identical twin towers linked with two sky-bridges at different heights has been simulated. The towers are 50 floor high-rise buildings including both vertical and horizontal egress components, namely stairs, occupant evacuation elevat

One major concern with adaptive designs, such as the sample size adjustable designs, has been the fear of inflating the type I error rate. In (Stat Med 23:1023-1038, 2004) it is however proven that when observations follow a normal distribution and the interim result show promise, meaning that the conditional power exceeds 50%, type I error rate is protected. This bound and the distributional assu

Popular Abstract in Swedish Inom forskningsområdet biogeokemi studerar man hur naturens olika grundämnen, såsom kol, kväve, fosfor och kisel ändrar form och transporteras genom landskapet för att via bäckar och vattendrag till slut nå havet. Tillsammans beskriver dessa olika processer, som sker på olika tidsskalor, från sekunder till flera miljoner år, ett grundämnes kretslopp (eller biogeokemiskaSilicon is the next most abundant element in the Earth’s crust and its biogeochemical cycle is linked with that of carbon. Further, silicon is a beneficial nutrient for plants in terrestrial ecosystems and a key nutrient for diatoms in aquatic ecosystems. During the last decade the important role of terrestrial vegetation in controlling Si fluxes downstream aquatic environments, via incorporation

Yersinios och shigellos är två bakterieburna och livsmedelsrelaterade sjukdomar som medför betydande kostnader i termer av direkta kostnader (kostnader för vård, medicin, rehabilitering etc.), indirekta kostnader (produktionsbortfall till följd av sjukfrånvaro) och immateriella kostnader (obehag, illamående och dylika immateriella aspekter som kan kopplas till sjukdomen). Det är väsentligt att upp

It is easy when studying the literature on the current development toward closer more integrated business to business relationships to get the impression that a close integrated relationship is desired for all circumstances. Instead, this thesis shows that the nature of business relationship is very strongly correlated to product supplied. The focus of this thesis has been a case study between a s

First Published in 1991. This is Volume 13 in a series of Transportation Studies. It contains 2 parts of the proceedings of a Conference held at Stockholmsmassan, Alvsjo, Sweden, 21-24 May 1989, organized by the Swedish Board of Transport in co-operation with the Department of Traffic Planning and Engineering, Lund Institute of Technology.

It is important for utilities to plan for Distributed Energy Resources (DER) uptake by representing and modelling their characteristics using appropriate assumptions, methods and tools. Large-scale DER deployment impacts power flows and power system performance in various complex ways as well as potentially contributing to ancillary services. In this paper, we explore state of the art planning met