Search results for "cost"

Simplified analytical model for flexural response of external R.C. frames with smooth rebars

2018

In this paper an analytical model in a closed form able to reproduce the monotonic flexural response of external RC beam-column joints with smooth rebars is presented. The column is subjected to a constant vertical load and the beam to a monotonically increasing lateral force applied at the tip. The model is based on the flexural behavior of the beam and the column determined adopting a concentrated plasticity hinge model including slippage of the main reinforcing bars of the beam. A simplified bilinear moment-axial force domain is assumed to derive the ultimate moment associated with the design axial force. For the joint, a simple truss model is adopted to predict shear strength and panel …

An algorithm for the Rural Postman problem on a directed graph

1986

The Directed Rural Postman Problem (DRPP) is a general case of the Chinese Postman Problem where a subset of the set of arcs of a given directed graph is ‘required’ to be traversed at minimum cost. If this subset does not form a weakly connected graph but forms a number of disconnected components the problem is NP-Complete, and is also a generalization of the asymmetric Travelling Salesman Problem. In this paper we present a branch and bound algorithm for the exact solution of the DRPP based on bounds computed from Lagrangean Relaxation (with shortest spanning arborescence sub-problems) and on the fathoming of some of the tree nodes by the solution of minimum cost flow problems. Computation…

How Electoral Institutions Change the Influence of World Trade Integration on Trade Policies

2014

World integration levels influence opportunity costs of maintaining restrictive national trade policies. In an integrated world, restrictive trade policies are more costly than in a context of low overall levels of world market integration. We argue that policy makers can be expected to react to these varying incentives to liberalize the trade regimes of their countries, yet do so not in a uniform fashion across countries. Rather, the responsiveness to changes in levels of world trade integration is conditional upon the electoral system the country in question employs. This is due to the fact that opportunity cost considerations increase in importance with a) the degree to which policy make…

Qualité et efficience de l'école primaire française : éléments de comparaisons spatiales et temporelles

2008

08001 - 20 p.; Document de travail de l'IREDU 2008-01; L'objectif principal de ce texte est de présenter des éléments factuels sur les résultats de l'école primaire française. Notre réflexion portera sur deux dimensions complémentaires, à savoir la qualité et l'efficience, celles-ci seront examinées dans une double perspective comparative (temporelle et spatiale). Dans une première partie, nous mobiliserons les données des enquêtes internationales pour apprécier les résultats des élèves français et leur évolution dans le temps sur ces 15 dernières années. La seconde partie sera consacrée aux coûts de l'enseignement primaire et plusieurs aspects seront abordés. Dans un premier temps, l'évolu…

La specialità della Regione siciliana a dieci anni dalla riforma del Titolo V

2011

Representação visual de custos no processo produtivo: estudo de caso em uma indústria calçadista de Portugal

2015

Ao longo das últimas décadas, os sistemas convencionais de produção passaram por mudanças diante da intensificação da competitividade entre empresas. As ocorrências dessas mudanças impulsionaram o desenvolvimento de ferramentas de auxílio à tomada de decisão para sistemas produtivos, no entanto, a maioria destes instrumentos não permite a visualização dos custos envolvidos ao longo das operações industriais. O presente estudo realiza a integração do Waste Identification Diagrams (WID), atual ferramenta para visualização e análise de processos produtivos, em conjunto com Time-Driven Activity-Based Costing (TDABC), ferramenta de gestão estratégica de custos, e procura criar um modelo que visu…

Contests with size effects

2006

In this paper we analyze the structure of contest equilibria with a variable number of individuals. First we analyze a situation where the total prize depends on the number of agents and where every single agent faces opportunity costs of investing in the contest. Second we analyze a situation where the agents face a trade-off between productive and appropriative investments. Here, the number of agents may also influence the productivity of productive investments. It turns out that both types of contests may lead to opposing results concerning the optimal number of individuals depending on the strength of size effects. Whereas in the former case individual utility is u-shaped when the numbe…

Spatial Competition in Quality

2011

We develop a model of vertical innovation in which firms incur a market entry cost and position themselves in the quality space. Once established, firms compete monopolistically, selling to consumers with heterogeneous tastes for quality. We establish the general existence and conditional uniqueness of the pricing game in such vertically differentiated markets with a potentially large number of active firms. Turning to firms’ entry decisions, exogenously growing productivities induce firms to enter the market sequentially at the top end of the quality spectrum. We spell out the conditions under which the entry problem is replicated over time so that each new entrant improves incumbent quali…

Struggling for the New Role for Business Controller

2008

The recent discussion on changes in the controller's role has mainly focused on the national and organizational level culture aspects of that professional role. While earlier studies have demonstrated how the role changes have been stimulated by corporate culture, IT systems, new accounting technologies and interprofessional competition, we contend that such changes cannot be achieved without active individuals in organizations. Our study is informed by the concept of institutional entrepreneurship, concentrating on changes in institutions, such as professional roles, which are achieved by an active agency. Thus we concentrate on the individual level by tracing how the role of a single cont…

Competition Policy in the Italian Economy: Current Developments and Lines of Action

2016

Presentation to the Italian Parliament of the 2015 Annual Report of the Italian Competition Authority. Rome, 18 June 2015