We model a two-level supply chain where Nash bargaining occurs upstream and firms compete in logit setting downstream, either via Bertrand price or an auction. The parameters can be calibrated with discrete set of data on prices, margins, market shares, facilitating use by antitrust practitioners. perform numerical simulations to identify cases modelling the full vertical structure is important...

Political Ecology (PE) has been retrospectively created from a history of wide ranging work of different disciplines, cultural settings and epistemological foundations. Its conceptualization was and remains expansive, eclectic and inclusive which has brought both innovative thinking and charges of incoherence. A review of these paradoxical views on the quality of knowledge and its effectiveness...

In emerging economies, political institutions (i.e., government and its agencies), act as a major force in defining and mobilizing resources. IT entrepreneurial firms endeavor to obtain resources from political institutions, named as political institutional resources (PIRs), to overcome insurmountable handicap of resource deficiency. However, how PIRs matter remains unclear. Acknowledging this ...

Mining Political Blogs With Network Based Topic Models by Jiawei Liang Department of Statistical Science and Department of Economics Duke University

Resident participation in the political action committee (PAC) is important for professional advocacy and for ensuring access to quality musculoskeletal care. The following questions were asked: Would faculty contribution-matching increase donation rates and amounts among orthopedic surgery residents at a single institution? What barriers do residents self-identify that prevent or delay PAC par...

I start with two rough models of political theory (or philosophy: the dis tinction is not important here) with respect to the relation of morality to political practice. One is an enactment model. The model is that political theory formulates principles, concepts, ideals, and values; and politics (so far as it does what the theory wants) seeks to express these in political action, through persu...

How does the demand for lobbying reflected by government policy activity influence the use of lobbying strategies and tactics? The authors examine this question by assessing how the complexity of the policy space affects the political action committee (PAC) system. They hypothesize that the complexity of the policy space indirectly affects the size and activity of the PAC system through its dir...

OBESITY AND CHRONIC DISEASE Body mass index (BMI), which is based on height and weight relationships, is the most frequently used predictor for classifications of overweight (BMI = 25.0 to 29.9) and obesity (BMI = 30 or higher). Using BMI, a recent report by the National Health and Nutrition Examination Survey (NHANES IV) indicated that about 66% of the population is overweight, with more than ...

High-throughput technologies have led to large collections of different types of biological data that provide unprecedented opportunities to unravel molecular heterogeneity of biological processes. Nevertheless, how to jointly explore data from multiple sources into a holistic, biologically meaningful interpretation remains challenging. In this work, we propose a scalable and tuning-free prepro...

Solid substrate cultures of moulds behave in quite a difTerent way to conventional submerged cultures. Catabolic repression often observed in submerged fermentation can easily be overcome by using solid state fermentation. A. niger strains can be grown by SSF technique with the following advantages: enzyme titres and productivity are usually higher; there is a tendency to early enzyme excretion...