Rhodom icrobium vannielii, Lipopolysaccharide, Medium-Dependent Growth Forms, Cell Types The compositions of lipopolysaccharides from the photoheterotrophic budding R hodom i­ crobium vannielii strains DSM 162, Rm5, E3 and 2/1 are reported. Common constituents of these lipopolysaccharides are glucose, mannose, glucosamine, glucuronic and galacturonic acids, 2-keto-3-deoxyoctonate (KDO) and the ...

People often act as if they care about others’ welfare as well as their own (i.e. have “social preferences”). One plausible assumption is that people have preferences for social implications of their actions, determined by exogenous “conventions”, in addition to the material consequences of actions. I construct games with conventions using the psychological games framework developed in Geanakop...

Many workers hear about or obtain their jobs through friends and relatives. The aim of this paper is twofold. First, we relate both individual and aggregate labor market outcomes to the network structure of personal contacts. Second, we study strategic network formation. To this purpose, we develop a model specifying at the individual level both the decision to form contacts with other agents, ...

We study a model of network formation where the bene…ts from connections exhibit decreasing returns and decay with network distance. We show that the unique equilibrium network is a periphery-sponsored star, where one player, the center, maintains no links and earns a high payo¤, while all other players maintain a single link to the center and earn lower payo¤s. Both the star architecture and p...

We analyze the formation of networks among individuals. In particular, we examine the existence of networks that are stable against changes in links by any coalition of individuals. We show that to investigate the existence of such strongly stable networks one can restrict focus on a component-wise egalitarian allocation of value. We show that when such strongly stable networks exist they coinc...

Lodged within the Internet’s increasingly commercialized webs there exists a thriving subculture that has developed an economy all its own. Specifically, a modern gift economy, a consistent and internally rational structure of actively anti-economic behavior that presents an interesting juxtaposition to our contemporary notions of economy. Based on an extended ethnography, this subculture is an...

We examine the publications of authors affiliated with an economics research institution in Canada in (i) the Top-10 journals in economics according to journals’ impact factors, and (ii) the Canadian Journal of Economics. We consider all publications in the even years from 1980 to 2000. Canadian economists contributed about 5% of publications in the Top-10 journals and about 55% of publications...

Network formation among individuals constitutes an important part of many OR processes, but relatively little is known about how individuals make their linking decisions in networks. This article provides an investigation of heuristic effects in individual linking decisions for network formation in an incentivized lab-experimental setting. Our mixed logit analysis demonstrates that the inherent...

INTRODUCTION Dopamine (DA) is a neuromodulator (see: NEUROMODULATION IN INVERTEBRATE NERVOUS SYSTEMS and SYNAPTIC CURRENTS, NEUROMODULATION AND KINETIC MODELS) that originates from small groups of neurons in the mesencephalon (the ventral tegmental area (A10), the substantia nigra (A9) and A8) and in the diencephalon (area A13, A14 and A15). Dopaminergic projections are in general very diffuse ...