Optimization of energy usage in wireless sensor networks (WSN) has been an active research field for the last decades and various approaches have been explored. In fact, A well designed energy consumption model is the foundation for developing and evaluating a power management scheme in network of energy constrained devices such as: WSN. We are interested in developing optimal centralized power...

Many production systems have split and merge operations to increase production capacity and variety, improve product quality, and implement product control and scheduling policies. In this paper, we present analytical methods to model and analyse Bernoulli split and merge production systems with circulate, priority and percentage split/merge policies. The recursive procedures for performance an...

This paper develops methods to solve for optimal discretionary policies and optimal commitment policies in rational expectations models. These algorithms, which allow the optimization constraints to be conveniently expressed in second-order structural form, are more general than existing methods and are simple to apply. We use several New Keynesian business cycle models to illustrate their appl...

Despite increasingly more comprehensive policies for forest management, the lastforty years in Mexico has witnessed a continuing pattern of mismanagement. While somehave pointed a finger at underlying factors such as population growth and poverty,focusing on these factors tend to “blame the victim.” Political elements such as acentralized government, a dominant political party, ...

It is often claimed that upgrading workers' skills could help meet the challenges of technological and structural change, as well as population ageing. Policies to enhance skills could thus be an important part of the OECD Jobs Strategy. Still, little is known about the labour market impact of adult learning. Do policies that enhance workers' skills help improve the overall employment situation...

A central methodological divide in economics is between “structural” and “reducedform” approaches. This article reviews a recent literature in public economics that combines the advantages of reduced-form strategies – transparent and credible identi…cation –with an important advantage of structural models – the ability to make precise statements about welfare. This recent literature has develop...

BACKGROUND Sichuan is a province in China with an extensive history of earthquakes. Recent earthquakes, including the Lushan earthquake in 2013, have resulted in thousands of people losing their homes and their families. However, there is a research gap on the efficiency of government support policies. Therefore, this study develops a new perspective to study the health of earthquake survivors,...

abstract in this paper we test two versions of convergence hypothesis namely deterministic or conditional convergence and stochastic or catching up hypothesis using carrion-i-silvestre et al. (2005) stationary test. the results show latin and south american countries (lsa) catching up process toward the usa failed in 1980s and somewhat in 1990s. but in 2000s most of them could lie in convergenc...

We consider the problem of maximizing capacity in a queueing network with flexible servers, where the classes and servers are subject to failure. We assume that the interarrival and service times are independent and identically distributed, that routing is probabilistic, and that the failure state of the system can be described by a Markov process that is independent of the other system dynamic...