نتایج جستجو برای: o18

تعداد نتایج: 370  

2002
W. Erno Kuiper Clemens Lutz Aad van Tilburg Erno Kuiper

This paper considers vertical price relationships between wholesalers and retailers on five local maize markets in Benin. We show that if the common factor and the long-run disequilibrium error are not explicitly taken into account in testing the channel model, one can easily be wrong about how restrictions on the error-correction structure must be interpreted in terms of economic power in the ...

2007
Brian E. Whitacre B. E. Whitacre

This paper examines the shifting influence of household characteristics and telecommunications infrastructure on the residential broadband adoption decision for Oklahoma residents between 2003 and 2006. In particular, the spread of wired telecommunications infrastructure (namely cable Internet and Digital Subscriber Lines (DSL)) is examined, along with the effect that this diffusion has had on ...

1998
JOSHUA S. GANS

This paper is an empirical investigation of the determinants of city growth in Australia from 1981 to 1991. Our basic goal is to explain the population and labour force growth of a cross section of cities in the time period using variables representing the initial characteristics of cities. While we find that city growth is negatively correlated with initial size, government sector employment a...

2009
Michael Fritsch Alexandra Schroeter Marcus Dejardin Stephan Heblich

Empirical analyses suggest that the employment creating effect of start-ups is highest in regions with a low level of new business formation and that an increase in the regional start-up rate beyond a certain level may lead to negative employment effect. In explaining these results, we assume that the average quality of regional start-ups decreases with the number of start-ups, while the costs ...

Journal: :Games and Economic Behavior 2010
Robert M. Anderson Glenn Ellison Drew Fudenberg

Consider a model of location choice by two sorts of agents, called “buyers”and “sellers:”In the first period agents simultaneously choose between two identical possible locations; following this, the agents at each location play some sort of game with the other agents there. Buyers prefer locations with fewer other buyers and more sellers, and sellers have the reverse preferences. We study the ...

2014
Fatma Dalgakiran Luci A. Witcomb Alex J. McCarthy George M. H. Birchenough Peter W. Taylor

Investigation of the interactions between animal host and bacterial pathogen is only meaningful if the infection model employed replicates the principal features of the natural infection. This protocol describes procedures for the establishment and evaluation of systemic infection due to neuropathogenic Escherichia coli K1 in the neonatal rat. Colonization of the gastrointestinal tract leads to...

Journal: :Journal of clinical microbiology 1994
W Nimmich

A set of three bacteriophages (phi K5, phi K20, and phi K95) was used to discriminate between Escherichia coli K5 and K95 strains isolated from patients with urinary tract infections. All the strains tested were detected primarily by phi K5 and thought to carry the capsular antigen K5. Ten O2, 33 O6, and 32 O18 strains proved to be sensitive to the three phages. Eleven of 44 O75:H- strains, all...

2009
Roberta Piergiovanni Martin Carree Enrico Santarelli

The present study explores the impact exerted by a series of factors and processes including creativity, IPR activities, new business formation and the provision of amenities on economic growth for 103 Italian provinces (NUTS 3) over the period between 2001 and 2006. Provincial growth rates are measured alternatively by value added growth and employment growth. Findings show a positive effect o...

1998
Mariassunta Giannetti

This paper o"ers an explanation for the coexistence of convergence across countries and the lack thereof at the regional level in the European Union. The model shows that, even if it accelerates growth and brings convergence across countries, the intensi5cation of international knowledge spillovers due to more cross-country interaction may exacerbate within-country regional disparities, if regi...

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