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This paper presents a comprehensive set of effort and schedule estimating models for predicting Enterprise Resource Planning (ERP) implementations, available in the open literature. The first set of models uses product size to predict ERP software engineering effort as well as total integration effort. Product size is measured in terms of the number of(More)
  • Wilson Rosa
  • 2012 Joint Conference of the 22nd International…
  • 2012
Enterprise Resource Planning (ERP) projects are considered commercial-off-the-shelf (COTS) solutions where one substantial COTS product (e.g. Oracle, SAP) is tailored to provide automated business functions. This paper presents effort and schedule estimating models for predicting ERP implementation. The first two models use product size to predict software(More)
The effects of antihypertensive drugs on the performance of spontaneously hypertensive rats (SHR) in the elevated plus-maze were determined. Male SHR (3 months old) were submitted to long-term treatment (15 days) with alpha-methyldopa (alpha MD, 5 g/l, N = 10) and hydralazine (HYD, 100 mg/l, N = 10) given orally, diluted in water. After the drug treatment,(More)
<b>Context</b>: An effort estimation model with more than 20 parameters is not very useful at early conceptual phase if you don't have a logical approach for specifying the input values. <b>Goal</b>: This paper presents a simple approach for predicting software development effort. <b>Method</b>: The regression model uses product size and application types(More)
In the dynamic software field there are major challenges in adapting metrics and cost estimation methods to continuing changes. There is a need to assess emerging trends and re-interpret software size measures and estimation models for new processes. Future trends of software systems are overviewed with implications for software sizing and cost estimation(More)
General software cost parameters such as size, effort distribution, and productivity are necessarily imprecise due to variations by domain. To improve this situation, empirical software cost analysis using the primary US DoD cost database has been segmented by domain. This analysis supports a software cost estimation metrics manual for improvements in(More)
A method for determining cadmium and lead in urine and other biological samples by graphite-furnace atomic-absorption spectrometry is reported. Samples were analysed after wet or dry ashing and without extraction or matrix-modification techniques, in laminar-flow clean-room; negligible blank contributions were found. Matrix interference effects were(More)
João Willy Corrêa Rosa, Fabbryccio Akkazzha C. M. Cardoso, Keiiti Aki, Henrique S. Malvar, Fredy A. Villaorduña Artola and José Wilson Corrêa Rosa 1 Instituto de Geociências, Universidade de Brası́lia, 70910-900 Brası́lia, DF Brazil. E-mail: jwilly@unb.br 2 Departamento de Engenharia Elétrica, Universidade de Brası́lia, 70910-900 Brası́lia, DF Brazil 3(More)
This paper presents a set of effort and schedule estimating relationships for predicting software development projects using empirical data from 317 very recent US DoD programs. The first set predicts effort as a function of product size and application type. The second predicts the duration of software development as a function of product size and staffing(More)
It is currently accepted that young spontaneously hypertensive rats (SHR) have lower pressure levels than adult SHR in which the hypertension is well established, reaching the highest plateau at about 24 weeks, and that treatment with magnesium initiated during intrauterine life postpones the onset of cardiovascular alterations in SHR to about 90 days.(More)
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