The recent literature on the duration of trade has predominantly analyzed the determinants of trade flow durations using Cox proportional hazards models. The purpose of this paper is to show why it is inappropriate to analyze the duration of trade with continuous-time models such as the Cox model, and to propose alternative discrete-time models which are more suitable for estimation. Briefly, the

There is an increasing demand on the safety and reliability of the civil structures that make up our cities and infrastructure. The field of structural health monitoring aims to provide continuous non-destructive evaluation of such structures. Large concrete structures, such as nuclear power plants, provide a challenge when implementing such systems, if minor damage is to be detected. For methods

This article addresses the role of formal institutions and informal networks on corporate governance practices. The existing corporate governance literature has mostly examined the formal institutions, such as the effect of legal systems. Our contribution is to consider the effect of informal “small world” characteristics of ownership and board networks. We use the case of Scandinavia (Denmark, No

In Sweden, there are roughly half a million single family houses that use electric heating for both domestic hot water production and space heating. Since electricity is the most expensive energy source in Sweden, it is interesting to install a high solar fraction solar thermal system to reduce the energy use in these houses. One of the most significant bottlenecks for deployment of solar heating

Denna rapport tar sin omedelbara upprinnelse i frågan om det nedlagda mentalsjukhuset i Kristinehamn borde bli byggnadsminne eller ej. Inför den konferens som frågan gav upphov till och som handlade om hur och varför psykiatrins anstaltsbundna historiska miljöer kunde betraktas som kulturarv skrev FD Mikael Eivergård och jag en rapport under titeln Sinnessjukhus som kulturarv (Eivergård &

Otillräckliga insatser, låg status, svag styrning och litet inflytande från branscherna gör att lärlingsutbildningarna inte lyfter trots politiska initiativ. Arbetsgivarna bör ta större del i utformningen och genomförandet av utbildningarna.

IgE is a minor component of the humoral immune response but one that is of extensive medical importance as it is a major mediator of type 1 hypersensitivity or allergy. Allergy affects up to 30% of the population in the industrialized countries, consequently affecting the quality of life of millions of people. In this study we sought to investigate the IgE repertoire and its evolution as it occurs

Analysis of pressure transients in long, single pipelines for water transport has a potential of providing information on hydraulic features such as air/gas pockets,leaks. Thus the transient measured in a pipeline for sewage water had an oscillation period compatible with the location of a local high point of the pipe profile. The effect of leaks on transients was studied by means of computer mo

BACKGROUND: Circulating prostate cells can be detected with a reverse transcription-PCR (RT-PCR) assay for prostate-specific antigen (PSA) mRNA. We have developed a new quantitative RT-PCR method for measuring PSA mRNA. METHODS: The method uses a PSA-like internal standard (IS) mRNA that is added into the sample at the beginning of the RNA extraction and coamplified by RT-PCR with the PSA in the s