This paper considers a stylized model of network formation in which relations among agents are subject to frictions, as described in Bala and Goyal [A non cooperative model of network formation, Econometrica 68 (2000) 1181–1231]. We analyze the process of network formation in a dynamic framework where selfinterested individuals can form or delete links and, occasionally, make mistakes. Then, us...

We believe this case to be an example of renal damage caused by the inhalation of toluene in glue. Renal failure has been recorded after the abuse of other solvents such as carbon tetrachloride2 and trichloroethylene.3 O'Brien et a14 reported a case of hepatorenal damage after inhalation of toluene from a liquid cleaner, but similar damage from the toluene in glue has not been recorded. Since t...

Social sanctions may be a strong deterrent of crime. This paper presents a formal model that relates crime and social sanction to social interaction density. We empirically test the theoretical predictions using a provincial level panel dataset on different crimes in Italy between 1996 and 2003. We exploit detailed demographic and geo-morphological information to develop exogenous measures of s...

Several large series of cases of infective endocarditis have mentioned the paucity of pulmonic valve involvement. 1-3 A recent study by Hubbell et a14 found no cases of pulmonic valve endocarditis in a group of 79 drug addicts with 97 separate episodes of infective endocarditis. It is possible that the paucity of such reports may be due in part to the difficulty of assessing the pulmonic valve....

Perry and Reny (2016) show that the Euclidean length of a citation list satisfies five axioms including "depth relevance". We explore "breadth relevance", which favors consistent achievers over one-hit wonders. A convex combination of depth and breadth relevant citation metrics does not satisfy the independence axiom, but violations are rare. We estimate the parameters of this metric using two ...

A14-year-old female presented to the emergency department (ED) for the evaluation of difficulty swallowing. She experienced no headache, visual changes, respiratory abnormalities, unusual ingestions, hematemesis, or bilious vomiting. The rest of her review of symptoms was negative except for dizziness upon standing. Her medical history was significant for seeking medical care at another facilit...

The proton NMR spectrum of yeast tRNAVal 1 has been studied using nuclear Overhauser effect (NOE), including comparison of NOE patterns between purine C8 deuterated and nondeuterated samples. Studies of the downfield region enable us to reliably assign many resonances in the acceptor and D stems. Prominent among these reliable assignments is that of the unusual base pair U psi, which is made he...

Background Resveratrolis a natural polyphenol found in peanuts and grapes. Resveratrolpossesses antioxidative properties which have shown to reduce the oxidative damage from reactive oxygen species (ROS). Resveratrol also has the ability to attenuate inflammation via inhibiting TNF-a, IL-1b, IL-6, and blocking NF-kB activation. Resveratrol supplementation may have the potential to mitigate the ...

Individuals in many social networks imperfectly monitor other individuals’ network relationships. This paper shows that, in a model of a communication network, imperfect monitoring leads to the existence of many inefficient equilibria. Reasonable restrictions on actions or on beliefs about others’ actions can, however, eliminate many of these inefficient equilibria even with imperfect monitorin...

This note is a supplement to our previous papers: Mod. Phys. Lett. A14 (1999) 2427 (math-ph/9911010); Int. J. Mod. Phys. A15 (2000) 2329 (math-ph/9912014). The thermodynamic Bethe ansatz (TBA) equation for an integrable spin chain related to the Lie superalgebra osp(1|2) is analyzed. The central charge determined by low temperature asymptotics of the specific heat can be expressed by the Rogers...