|r(xi + ex)− r(xi)| ≤M2 ‖ex‖ , |fx(xi + ex)− fx(xi)| ≤M3 ‖ex‖ for some positive number M1,M2, and M3. ri (xi), E(si|xi), fx(xi) are p-th order differentiable and the p-th order derivatives are bounded. Corresponding Author: Arthur Lewbel, Department of Economics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA, 02467, USA. (617)-552-3678, [email protected], https://www2.bc.edu/∼lewbel/. ...

Objectives. To better understand the consequences of whole or partial reliance on test scores as a screening mechanism for college or university admissions or for job placement or promotion. Methods. We introduce a simple hurdles/threshold model to study one particular mechanism that has been recently proposed to generate a ‘‘compromise’’ between race-normed or gender-normed standards for accep...

We study an overlapping generations model of human capital accumulation with threshold effects using regional data for West Germany. Our basic goal is to shed light on what makes German regions grow. The paper finds that the relative income distribution appears to be stratifying into a trimodal distribution. Thus, application of the threshold model to a real world case, here West Germany, shows...

This paper examines the hypothesis that both stock returns and volatility are asymmetrical functions of past information from the US market. By employing a double-threshold GARCH model to investigate six major index-return series, we find strong evidence supporting the asymmetrical hypothesis of stock returns. Specifically, negative news from the US market will cause a larger decline in a natio...

In the context of the two-stage threshold model of decision making, with the agent’s choices determined by the interaction of three “structural variables,” we study the restrictions on behavior that arise when one or more variables are exogenously known. Our results supply necessary and sufficient conditions for consistency with the model for all possible states of partial knowledge, and for bo...

we introduce a model for prediction the behavior of electrodes which modified withcarbon nanotubes in a polymer medium. these kinds of polymer composites aredeveloped in recent years, and experimental data for its percolation threshold isavailable. we construct a model based on percolation theory and fractal dimensionsand using experimental percolation threshold for calculating the moments of c...

In social movements, the decision of individuals to participate depends both on their own preferences as well as the behavior of others. Three examples of this type of interaction are the Arab Spring protests, Kickstarter campaigns, and internet memes. One way of modeling this is Granovetter’s threshold model of collective action, in which each agent needs to see a “threshold” level of particip...

We consider the problem of updating beliefs for binary random variables, when probability assessments are elicited for them based on information of varying quality. We propose the threshold model, a Bayesian updating procedure where only measures of location and correlation have to be speciied before any updating is possible. The main aspect of this model is the use of Jeerey's conditionalizati...

Control of the longitudinal profile of ablated structures during laser processing is a key technological requirement. We report here on the direct machining of trenches in silicon with circular profiles using femtosecond accelerating beams. We describe the ablation process based on an intensity threshold model, and show how the depth of the trenches can be predicted in the framework of a causti...