As a first step towards understanding the evolution of small groups in firms, this paper develops and tests a simple decision-theoretic model of research-unit evolution in which, as managers resolve their uncertainty over time, they shut down under-performing units and remove under-performing unit heads. The selection process generates several testable hypotheses about how unit and head charact...

Y. Balcer and S. A. Lippman (1984, J. Econ. Theory 34, 292 318) develop a model to analyze the ``buy or wait'' problem under technological change. They show that this dynamic problem has a threshold solution: if the difference between the best available technology and that currently held exceeds a certain threshold, then buy. They also claim that the threshold is increasing in the ``discovery p...

We develop a two-sided matching model to analyze collaboration between heterogeneous academics and firms. We predict a positive assortative matching in terms of both scientific ability and affinity for type of research, but negative assortative in terms of ability on one side and affinity in the other. In addition, the most able and most applied academics and the most able and most basic firms ...

I examine the e¤ect of age-distribution of the society on economic growth through technological progress. I build a multisector economy model that involves population pyramid. I characterize the steady-state of the model for low and high population growth rate. Higher population growth rate yields faster TFP and output growth in the long-run. I analyze dynamic behavior of the economy. I calibra...

This paper examines the determinants of R&D cooperation focusing on the relationship between firms R&D cooperation and knowledge spillovers on a sample of Italian innovative firms drawn from the Italian Fourth Community Innovation Survey. I explore this relationships taking into account different types of R&D cooperations and the endogeneity problems which arise from the likely mutual dependenc...

Abstract Introduction Following the initial COVID-19 surge in United Kingdom, there was a national incentive for elective vascular surgery to be restricted clean sites order reduce perioperative cross infection and subsequent mortality. We assessed risk of dying from perioperatively acquired during peak London outbreak. Materials Methods 43 consecutive patients who had (n = 48) procedures March...

This paper analyzes the implications of advertising for firm dynamics and economic growth through its interaction with R&D. We develop a model endogenous heterogeneity that incorporates decisions calibrate it to match several empirical regularities across size. Our provides microfoundations empirically observed negative relationship between both R&D intensity In calibrated model, about ...

Applying the Foster, Haltiwanger, and Krizan (2001) decomposition to plant-level manufacturing data from Chile Korea, we find that entry exit of plants account for a larger fraction aggregate productivity growth during periods fast GDP growth. To analyze this relationship, develop model firm based on Hopenhayn (1992). When introduce reforms reduce costs or barriers technology adoption into cali...

the main objective of this paper is to evaluate the effect of r&d on profitability of high -tech industries with new evidence from the iranian industries carrying four- digit codes. the structure- conduct- performance (scp) paradigm, which is relatively well known in industrial economics and in organization management, provides the theoretical construct that guides our empirical model formu...