Understanding and Controlling Software Costs

Economic Optimization of the Reflux Ratio of Two Components Stage Distillation Columns

Distillation columns are complex processes for modeling and controlling. These columns are significant parts of most chemical industries for separation of components. Control of this process is essential for achieving certain purity for products with a minimum cost. However, nonlinearities, multivariable interaction, non-stationary behavior and severity of disturbances inside the column made th...

Controlling the costs of the Iranian health system: letter to the editor

The relation between insurance funds of medical service insurance and heart inpatients costs in Karaj hospitals (Iran)

  Nowadays in Iran the majority of health and medical budget is spent on uncontagious diseases, especially in the field of heart disease diagnosis. This research aimed at surveying the relation between insurance funds of medical service and heart inpatients costs in the second half of the year 1388. The research is through applied method and its methodology is descriptive analysis in which nine...

Using Proformas and Object Oriented Techniques to Model Software System Architectures

EXTENDED ABSTRACT Unless an operational system has been developed and maintained under strict connguration control it is likely that the cost of software maintenance will be very high. This high cost can be largely attributed to the costs incurred in identifying and understanding the parts of a system potentially aaected by proposed maintenance changes. In large legacy systems the process of id...

A Value-Chain Analysis or Sortware Productivity Components

The value chain, developed by Porter and his associates at the Harvard Business School [Porter, .1980; Porter, 1985], is a useful method of understanding and controlling the costs involved in a wide variety of organizational enterprises. It identifies a canonical set of cost sources or value activities, represent"ing the basic activities an organization can choose from to create added value for...