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cost estimation Method of Missile Equipment Based on Fuzzy Approach Degree

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Cost Estimation Method of Missile Equipment Based on Fuzzy A...

Limitations of cost estimation Using Building Information Modeling in Poland

2010 2nd International Conference on Intellectual Technology in Industrial Practice (ITIP2010)

作者： Guiming Chen 504 Staff Room The Second Artillery Engineering College Xi’an China Xi Chen 504 Staff Room The Second Artillery Engineering College Xi’an China Qing Dai 901 Staff Room The Second Artillery Engineering College Xi’an China

The correct estimation of cost provides basis for setting a reasonable price on missile equipment. In this paper, a theory of fuzzy mathematics is used. The qualitative information and quantitative information are considered during the course of the price auditing. The basic procedure in missile equipment cost estimation based on fuzzy approach degree is analyzed. The example shows that the model is objective and reliable, and its wide use makes great sense.（Abstract）

关键词： fuzzy approach degree missile equipment cost estimation

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Journal of Civil Engineering and Architecture 2013年第5期7卷 545-554页

作者： Krzysztof Zima Agnieszka Legniak Department of Building Technology and Organization Faculty of Civil Engineering Cracow University of Technology Warszawska24 31-155 Poland

BIM （building information modeling） is a technological innovation, not only during the design process, but also during the planning and preparation stages of a construction project, as it also supports making investment decisions. An innovation which is comparable, if only slightly less significant, was the transition from using 2D systems to the 3D structural model design. The article outlines the advantages of using BIM in the preparatory stages of a construction project. It also presents benefits which relate to the employment of the BIM system in cost estimation process. The article describes the Zuzia BIM system which uses the BIM model, as this system has just been created in Poland for the purpose of construction cost estimation. The preparation of the bill of quantities is automated in this system and this has been achieved on the basis of data directly obtained from virtual models of buildings, which were carried out thanks to the collaboration of various design sectors. The article authors, using their own experience, present difficulties which can be encountered by cost estimators in Poland when calculating the value of a building with the help of the BIM concept. The article shows the design errors that prevent or hinder takeoff automatic calculation based on BIM model. Design errors shown in the article are for example reinforcement bars have been defined by a designer as elements hollow in the middle or as one element for the whole building, one type of elements assigned as few different or incorrect defining of elements in relation to the type of works.

关键词： BIM cost estimation 3D virtual model.

Product Assembly cost estimation Based on Artificial Neural Networks

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International Journal of Plant Engineering and Management 2001年第4期6卷 179-185页

作者： HE Shan, XIONG Guang leng, ZENG Qin liang, FAN Wen hui The National CIMS/ERC, Tsinghua University, Beijing 100084, P.R.China YUE Yu hua, ZHANG Chun heng, BAO Jian wen Qiqihaer Railway Rolling Stocks Co. Ltd., Qiqihaer, Heilongjiang 161002, P.R.C The National CIMS/ERC Tsinghua University Qiqihaer Railway Rolling Stocks Co. Ltd.

This paper proposes a method for assembly cost estimation in actual manufacture during the design phase using artificial neural networks(ANN). It can support the designers in cost effectiveness, then help to control the total cost. The method was used in the assembly cost estimation of the crucial parts of some railway stock products. As a comparison, we use the linear regression (LR) model in the same field. The result shows that ANN model performs better than the LR model in assembly cost estimation.

关键词： cost estimation assembly cost artificial neural network product design.

A Modified cost estimation Formulae for Calculating Manufacturing cost of Injection Part/Mold

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International Journal of Plant Engineering and Management 2002年第1期7卷 15-20页

作者： WANG Hui, ZHOU Xiong hui, RUAN Xue yu National Die & Mold CAD Research Center, Shanghai Jiaotong University, Shanghai 200030, P.R.China National Die & Mold CAD Research Center Shanghai Jiaotong University Shanghai 200030 P.R.China

In modern society, a plastic part has its own important position. To the managers and decision makers in the field of plastic component, how to decide the manufacturing cost of the injection part or injection mold as quickly as possible is most valuable. cost estimation formulae (CEF) are the most common method to evaluate the cost of injection part/mold, which is similar to our ordinary thinking. In this paper, a CEF method used by Dr. Weiyi Hu in Massachusetts University is first discussed. To the problems existed in the formulae, we propose an improved algorithm. This algorithm can be used to estimate the manufacturing cost of injection part/mold accurately in the early design stage.

关键词： injection part/mold cost estimation CEF algorithm

Application of Case-Based Reasoning in cost estimation of drilling wells

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Application of Case-Based Reasoning in cost estimation of dr...

Research on the cost Control and estimation of Engineering Management

2012 International Conference on Industrial and Intelligent Information(ICIII 2012)

作者： Hossein Shams Mianaei Seyed Hossein Iranmanesh Hamid Akbari Industrial Engineering Department College of EngineeringUniversity of TehranTehranIran Petropars CompanySouth Pars Phase 12Assistant Professor of IIESTehranIran

costs estimation of drilling for new wells is one of the main concerns of active companies in this *** some of features of drilling can not be expressed quantitatively and there are many qualitative features in data of the available *** a method should be applied to use these data to estimate the desired and ideal output of project *** case based reasoning （CBR） method covers the qualitative data with regard to its *** CBR method which is created based on the viewpoint of using presented solutions for previous solved problems in order to solve new similar problem save time and therefore speed of drilling is increased which it is very important,as regards available estimation methods spend the much time to estimate output which is cost of drilling wells in this case *** results show that obtained estimation accuracy is high.

关键词： Case Based Reasoning (CBR) cost estimation

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Research on the Cost Control and Estimation of Engineering M...

Extreme Weather Loss and Damage estimation Using a Hybrid Simulation Technique

2010 2nd IEEE International Conference on Advanced Management Science（IEEE ICAMS 2010）

作者： Xiang Gu Construction Management & Real Estate School Chongqing University Chongqing China

The paper analyzes the basic principle of the engineering management cost control,introduces the content and method of the engineering management cost control from project bidding stage,construction preparation stage,construction stage,completion and acceptance stage,and points out that the engineering management cost control level is the key of the project benefit evaluation,and is the important way of improving engineering management level and decreasing project operation risk.

关键词： Engineering Management cost Control cost estimation

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International Journal of Disaster Risk Science 2022年第4期13卷 592-601页

作者： Charles Doktycz Mark Abkowitz Hiba Baroud School of Civil and Environmental Engineering Vanderbilt UniversityNashvilleTN 37235USA

History has shown that occurrences of extreme weather are becoming more frequent and with greater impact,regardless of one's geographical *** a risk analysis setting,what will happen,how likely it is to happen,and what are the consequences,are motivating questions searching for *** help address these considerations,this study introduced and applied a hybrid simulation model developed for the purpose of improving understanding of the costs of extreme weather events in the form of loss and damage,based on empirical data in the contiguous United *** results are encouraging,showing on average a mean cost estimate within 5%of the historical *** creates opportunities to improve the accuracy in estimating the expected costs of such events for a specific event type and geographic *** turn,by having a more credible price point in determining the cost-effectiveness of various infrastructure adaptation strategies,it can help in making the business case for resilience investment.

关键词： Climate change cost estimation Extreme weather Loss and damage Loss normalization Monte Carlo simulation

A Framework for Visualization of BIM Model Based on 5D costing and estimation Using Revit

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A Framework for Visualization of BIM Model Based on 5D Costi...

作者： Salman Nazeer 西安理工大学

学位级别：硕士

The BIM approach is transforming the construction industry,resulting in the desired digitalization and automation over a project’s whole life *** is made up of three components:technologies,policies,and ***,they serve as a shared knowledge resource for information,allowing for its management,the construction of a reliable source of data for decision-making,and the ability for all stakeholders to interact throughout the project,beginning with the first ***,BIM encompasses how data is managed in terms of generation,use,reuse,and incorporation into digital models with the goal of improving and developing the design,construction,and operation of one or more *** the many applications for the BIM approach,there is cost management support,which links cost data to the 3D *** method is referred to as the 5D *** cost management is the process of planning,estimating,budgeting,financing,funding,managing,and controlling expenses in order to complete a project within the client’s or sponsor’s agreed and intended *** any building project,cost estimating is one of the most important preliminary steps.A high initial cost estimate can make it difficult for the client to move forward with the *** excessively low cost estimate,on the other hand,could result in financial difficulties during the next *** most common method for estimating preliminary costs is the floor area ***,it is only a guess and should not be taken as the final *** quality and quantity of data accessible at the early stages of a project are typically limited or undefined,leading to a number of *** utilisation of historical data may be able to fill in the gaps created by a lack of *** detailed cost estimation,on the other hand,is a time-consuming and labour-intensive *** research presents a BIM-based cost calculation for the project’s various stages built on historical cost data delivered

关键词： BIM Model Revit Software cost estimation Pakistani construction company Project life cycle

A Hybrid Approach for Performance and Energy-Based cost Prediction in Clouds

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Computers, Materials & Continua 2021年第9期68卷 3531-3562页

作者： Mohammad Aldossary Department of Computer Science College of Arts and SciencePrince Sattam Bin Abdulaziz UniversityAl-KharjSaudi Arabia

With the striking rise in penetration of Cloud Computing,energy consumption is considered as one of the key cost factors that need to be managed within cloud providers’***,recent approaches and strategies based on reactive and proactive methods have been developed for managing cloud computing resources,where the energy consumption and the operational costs are ***,to make better cost decisions in these strategies,the performance and energy awareness should be supported at both Physical Machine(PM)and Virtual Machine(VM)***,in this paper,a novel hybrid approach is proposed,which jointly considered the prediction of performance variation,energy consumption and cost of heterogeneous *** approach aims to integrate auto-scaling with live migration as well as maintain the expected level of service performance,in which the power consumption and resource usage are utilized for estimating the VMs’total ***,the service performance variation is handled by detecting the underloaded and overloaded PMs;thereby,the decision(s)is made in a cost-effective *** testbed evaluation demonstrates that the proposed approach not only predicts the VMs workload and consumption of power but also estimates the overall cost of live migration and auto-scaling during service operation,with a high prediction accuracy on the basis of historical workload patterns.

关键词： Cloud computing energy efficiency auto-scaling live migration workload prediction energy prediction cost estimation