We consider the Windows Scheduling (WS) problem, which is a restricted version of Unit-Fractions Bin Packing, and it also called Inventory Replenishment in context Supply Chain. In brief, WS problem to schedule use communication channels clients. Each client c i characterized by an active cycle window w . During period time that any given active, there must be at least one transmission from sch...

Global System for Mobile Communications (GSM) supports full-rate and half-rate calls. In this paper, we propose analytical and simulation models to study the performance of four channel assignment schemes for GSM half-rate and full-rate traac. Our study indicates that among the four schemes, the repacking scheme has the best performance for mixing half-rate and full-rate traac. We also observe ...

We report the results of a computational study of repacking in the FCC Incentive Auctions. Our interest lies in the structure and constraints of the solution space of feasible repackings. Our analyses are “mechanism-free”, in the sense that they identify constraints that must hold regardless of the reverse auction mechanism chosen or the prices offered for broadcaster clearing. We examine topic...

The rapid growth of wireless technology has led to increasing demand for spectrum. In the past, spectrum is statically allocated. As a result, many wireless applications cannot use idle spectrum even though it is left unused by the owner for a long period of time. The low utilization of already scarce spectrum resource requires us to dynamically reallocate the idle spectrum to achieve better sp...

This paper investigates the consequences of Chapter 7 liquidation and Chapter 11 reorganization on the reallocation and subsequent utilization of assets in bankruptcy. We identify 129,000 bankrupt establishments and construct a novel dataset that tracks the occupancy and utilization of real estate assets over time. Asset reallocation is widespread, as nearly 80% of real estate is not occupied b...

Œis is a very interesting and provocative paper on an important topic. Growth in advanced economies of the world have seŠled into a tepid pace of 1%-2% a year associated with a decline in total factor and labor productivity over the past decade. It is imperative to understand the sources of low productivity growth and to evaluate what policies can rejuvenate growth. Œe potential growth rate of ...

Scott Schuh and Robert Triest have written a useful and interesting paper, collecting existing evidence on job flows and providing us with a few brand new facts to chew on. I wish to touch on some of the many good things in the paper, but it comes with the discussant’s job description that I must focus on the parts of the paper that I view as more problematic. Few economists would deny that an ...

Heterogeneity is ubiquitous in firm-level and sectoral data. Equilibrium models, however, typically assume a representative firm, as in Andrew B. Abel and Olivier J. Blanchard (1983). The representative firm paradigm leaves no role for the distribution of capital. We model capital reallocation in a general equilibrium model with two sectors. Capital adjustment costs capture illiquidity in our m...

This paper considers a technological change that can be utilized only by production units adapting to the new technology. A simple firm dynamics model is used to show such an innovation enhances reallocation, whereas a technological advance that is available to all production units does not. This implication is used in structural vector autoregressions to study the driving force behind cyclical...

Title of Dissertation: HETEROGENEITY AND INPUT REALLOCATION Eugénio Pinto, Doctor of Philosophy, 2006 Dissertation Directed by: Professor John Haltiwanger, Department of Economics Professor John Shea, Department of Economics In this dissertation, we analyze some patterns of aggregate job reallocation that are significantly determined by the coexistence of heterogeneous businesses in any industr...