Latest Economic model Stories
By Wagner, Breanne COLORADO SPRINGS, CoIo. - Satellite signals beamed down to military warplanes, unmanned aircraft ground stations or vehicles are affected by a range of disruptive phenomena - enemy jammers, atmospheric white noise or weather. These disturbances make it difficult to predict if a signal will be clearly received. To compensate for these unpredictable scenarios, engineers are relying on simulations to predict how satellite links will perform, says Steve Williams, business...
By Akbulut, Asli Yagmur Looney, Clayton Arlen; Motwani, Jaideep ABSTRACT The sharp decline in the number of students pursuing information systems (IS) degrees is a source of great concern not only for academic institutions offering IS degrees, but also for companies in need of hiring qualified professionals. In response, university educators are searching for mechanisms to generate larger pools of IS graduates. This study focuses on one such mechanism, instrumental assistance, to promote...
By Frankforter, Steven A Davis, James H; Vollrath, David A; Hill, Vanessa This study tests the model of Davis, Schoorman, and Donaldson (1997) that proposed determinants of a company's governance structure. In particular, we focus on the agency theory aspects of the model and its ability to predict the presence of an opportunist- orientation CEO at publicly listed U.S. companies. Using survey based data obtained from CEOs and directors of 100 companies in a match-pair design, we identified...
By Street, Christopher T; Cameron, Ann-Frances In order to thrive, small businesses are often advised to develop relationships with external organizations that have the potential to assist business development, survival, and growth. A focus on the external relationships of the small business underlines the vital importance of external resources in moving a small business toward increased success and profitability. Covering the period from 1990 to 2002, this paper reviews the small business...
By McBeth, Mark K; Shanahan, Elizabeth A; Arnell, Ruth J; Hathaway, Paul L Narrative policy analysis and policy change theory rarely intersect in the literature. This research proposes an integration of these approaches through an empirical analysis of the narrative political strategies of two interest groups involved in policy debate and change over an eight-year period in the Greater Yellowstone Area. Three research questions are explored: (i) Is it possible to reconcile these seemingly...
First of all, we provide an introduction to general Stochastic Programming,which is a framework for modelling optimization problems that involve uncertainty.For this purpouse, we describe main concepts, modelling issues, solution methods and some applications in finance and economics.This thesis presents an algorithmic approach for solving multistage stochastic mixed 0-1 models. The problem is modelled as a splitting variable representation of the Deterministic Equivalent Model for the...
Long-distance dispersal (LDD) of wind-borne organisms is central to quantifying risk for transgenic escape and gene flow, control of pests and invasions, persistence in fragmented landscapes and species co-existence; yet LDD remains notoriously difficult to define, measure and model. This difficulty has shaped the current paradigm that the frequency and spatial extent of LDD events are almost impossible to predict. In the September issue of The American Naturalist, G. G. Katul (Duke...
A new study published in the journal Global Ecology and Biogeography represents the first real test of the performance of models used to forecast how species will change their geographic ranges in response to the Earth's changing climate Despite the weight of scientific evidence that the Earth is warming and that this is already affecting wildlife, many people - and a few scientists - still refuse to believe it is actually happening. These climate change skeptics usually justify their...
