Developing Probabilistic Well Construction Estimates Using Regression Analysis

Jablonowski, Christopher J.; MacEachern, Douglas P.

doi:10.1260/0144-5987.27.6.439

Cited by 9 publications

(1 citation statement)

References 9 publications

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“…MacEachern (2009), o método de estimativa adequado é aquele que busca o balanço entre o nível de detalhe e o esforço de engenharia com o propósito da estimativa e o decisão para a qual a peça será utilizada.…”

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Cooperativas abertas e cooperativas modernas: Análise de dois conceitos para o cooperativismo contemporâneo

Lora¹

2020

Tópicos Em Administração – Volume 29

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Cooperativas abertas e cooperativas modernas: Análise de dois conceitos para o cooperativismo contemporâneo

Lora¹

2020

Tópicos Em Administração – Volume 29

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A conceptual cost estimation model for the pre-design stage of road projects using multiple regression analysis

Atapattu,

Domingo,

Sutrisna

2024

JFMPC

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Purpose The current estimation practice in construction projects greatly needs upgrading, as there has been no improvement in the cost overrun issue over the past 70 years. The purpose of this research was to develop a new multiple regression analysis (MRA)-based model to forecast the final cost of road projects at the pre-design stage using data from 43 projects in New Zealand (NZ). Design/methodology/approach The research used the case study of 43 completed road projects in NZ. Document analysis was conducted to collect data, and statistical tests were used for model development and analysis. Findings Eight models were developed, and all models achieved the required F statistics and met the regression assumptions. The models’ mean absolute percentage error (MAPE) was between 21.25% and 22.77%. The model with the lowest MAPE comprised the road length and width, number of bridges, pavement area, cut and fill area, preliminary cost and cost indices change. Research limitations/implications The model is based on road projects in NZ. However, it was designed to be able to adapt to other contexts. The findings suggest that the model can be used to improve traditional conceptual estimating methods. Past project data is often stored by the project team but rarely used for analysing and forecasting purposes. This research emphasises that past data can be effectively used to predict the project cost at the pre-design stage with limited information. Originality/value No research was conducted to adopt cost modelling techniques into the conceptual estimation practice in the NZ construction industry.

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Identification of Leading Safety Indicators in Onshore Oil Drilling

Jablonowski¹

2012

Energy Exploration & Exploitation

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Abstract"Leading safety indicators" are variables that are known to correlate with lagging indicators such as accidents. When a leading indicator suggests that the risk of a safety incident is increasing, the safety manager can intervene and mitigate the risk. This paper presents the results of a recently completed study of leading indicators using a data set from an onshore oil and gas drilling operation. This research leverages the results of two previous studies on the same data set to identify leading indicators and to provide guidance regarding intervention. This case study is intended to demonstrate how a quantitative approach can provide specific guidance to safety managers regarding safety policy and decision-making.

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Developing Probabilistic Well Construction Estimates Using Regression Analysis

Cited by 9 publications

References 9 publications

Cooperativas abertas e cooperativas modernas: Análise de dois conceitos para o cooperativismo contemporâneo

Cooperativas abertas e cooperativas modernas: Análise de dois conceitos para o cooperativismo contemporâneo

A conceptual cost estimation model for the pre-design stage of road projects using multiple regression analysis

Identification of Leading Safety Indicators in Onshore Oil Drilling

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