REINGENIERIA-CASOS

BUSINESS RE.ENGINEERING PROCESS (BPR)
This paper presents a simulation study carried out to solve a problem of manufacturing process reengineering. The specific company in which the study took place is a medium size manufacturer of chest freezers, which required an in-depth analysis of its manufacturing operations in an attempt to increase its throughput and overall productivity. A simulation model of the current manufacturing system was developed to ascertain its limitations and problems. The relevant operational performance measures were analyzed in order to allow for the proposal of a set of changes to the actual manufacturing operations. In order to support the decision process concerned with the implementation of the suggested changes, these were included in the simulation model. The outcome of the simulation study was taken into account by the decision-makers and the recommendations are being implemented.
A case study in re-engineering to enforce architectural control flow and data sharing

Abstract
Without rigorous software development and maintenance, software tends to lose its original architectural structure and become difficult to understand and modify. ArchJava, a recently proposed programming language which embeds a component-and-connector architectural specification within Java implementation code, offers the promise of preventing the loss of architectural structure. AliasJava, which can be used in conjunction with ArchJava, is an annotation system that extends Java to express how data is confined within, passed among, or shared between components and objects in a software system.
We describe a case study in which we incrementally re-engineer an existing Java implementation to obtain an implementation which enforces the architectural control flow and data sharing. Building on results from similar case studies, we chose an application consisting of over 16,000 source lines of Java code and over 90 classes. We describe our process, the detailed steps involved (some of which can be automated), as well as some lessons learned and perceived limitations with the languages, techniques and tools we used.
REENGENERING IN AMERICA HOSPITALS:
The past decade has witnessed pronounced changes in the organization of United States hospitals, many the direct result of restructuring and re-engineering initiatives intended to decrease costs and increase productivity. Little is known about how these initiatives have affected clinical care and patient outcomes. Using data from a variety of sources, the authors describe initiatives that hospitals undertook during this period, discuss how nurse staffing changed relative to the case mix of patients receiving care, and examine changes in nursing practice environments from 1986 to 1998.







Abstract:
Business pocess re-engineering (BPR) is one of the latest approaches to improving organisational performance. It evolved in the US private sector, and has been introduced to Britain and the British public sector, offering radical improvement from radical redesign. This article considers the nature of BPR (and there is more than one variety) and the suitability of its application to the public sector in general and to hospitals in particular. The authors then evaluate the experience and impact of BPR in a London hospital trust. The article concludes by highlighting factors that help to explain the particular example of BPR and draws out some implications for its wider use in the public sector.

RESUMEN:
'Business process re-engineering' (BPR) es uno de los últimos métodos para mejorar el desempeño organizacional. Se desarrolló en el sector privado norteamericano, y ha sido introducido en Inglaterra y en el sector privado inglés, ofreciendo un mejoramiento sustancial respecto al rediseño radical. Este artículo considera la naturaleza del BPR (hay más de una variedad) y su conveniencia para el sector público en general y para los hospitales en particular. Los autores también evalúan el desarrollo e impacto del BPR en un hospital inglés. El artículo concluye haciendo énfasis en los factores que ayudan a explicar el ejemplo particular del BPR y propone algunas implicaciones de su posible uso en el sector público.