Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)最新文献_第8页

Resource allocation model for a fast-tracked project 快速跟踪项目的资源分配模型

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792562

Y. Bissiri, S. Dunbar

{"title":"Resource allocation model for a fast-tracked project","authors":"Y. Bissiri, S. Dunbar","doi":"10.1109/IPMM.1999.792562","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792562","url":null,"abstract":"The concept of fast-tracking a project, although generally economically beneficial, is a risky undertaking. The risks vary from being unable to complete the project in the expected time to higher costs due to excessive compression of the activity duration. The paper describes the variables involved in fast-tracking a project and then demonstrates that risks can be reduced if proper resources are carefully allocated to the project. Reducing the duration of an activity (\"crashing\") within a project usually requires additional investment and/or resources. These resources can be found within the project's pool of funds such as using overtime for manpower or they are brought into the project as additional items. The success of the fast-tracking approach depends on minimizing the cost of these additional resources. A simulation model is described that allocates resources to project activities in a way so as to minimize the additional cost of resources. The fact that the start time of an activity depends on the completion time of its predecessors makes it a probabilistic problem with respect to completion time.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130463652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Breeding policies in evolutionary approximation of optimal subspace 最优子空间的进化逼近育种策略

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792491

H.M. Huang, P.L. Leung

{"title":"Breeding policies in evolutionary approximation of optimal subspace","authors":"H.M. Huang, P.L. Leung","doi":"10.1109/IPMM.1999.792491","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792491","url":null,"abstract":"In very high dimension variable space (e.g. 30 or more), huge computations evenly hinder investigators to conduct any direct meaningful analysis. A traditional trick is firstly to conduct single variable analysis, then combine several top most single-fittest variables to approximate the optimal subspace. In this investigation, an evolutionary method for optimal subspace approximation is proposed. The breeding policies of this evolutionary approximation, its scalability and generalization have been intensively investigated. The studied object is a 30-D variable space which contains 6000 artificial individuals. In this data, except for 3 variables containing two donut-type data distributions, each with 3000 individuals, the remaining 27 variables only contain quasi-random data with the same value range as the donut data distributions. The donut distribution consist of two toroidal distributions (classes) which are interlocked like links in a chain. The cross-section of each distribution is a Gaussian function distributed with standard deviation delta. Even the Donut problem which possesses a variety of pathological traits can invalidate many non-complex analyses for classification. The goal of this investigation was to find the 3 donut variables within the optimal subspace of 30-D variable space in which most quasi-random variables emerge as noise variables. In order to reach this goal, various breeding policies were implemented and compared. Although no perfect solution for the approximation was found, various breeding policies and their impact on decreasing the error were studied. These were found to be relatively usable for reference and might be improved when used in a practical application.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133143182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Artificial intelligence approach to the modeling of rolling loads in technology design for cold rolling processes 冷轧工艺设计中轧制载荷建模的人工智能方法

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792536

Jan Kusiak, J. Lenard, K. Dudek

引用次数: 2

An iterative approach to determine composition and heat treatment from the mechanical yield strength of an aluminum-lithium alloy 从铝锂合金的机械屈服强度确定成分和热处理的迭代方法

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792545

J.W. Fragomeni

{"title":"An iterative approach to determine composition and heat treatment from the mechanical yield strength of an aluminum-lithium alloy","authors":"J.W. Fragomeni","doi":"10.1109/IPMM.1999.792545","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792545","url":null,"abstract":"The development of a model to predict an alloy's microstructure and processing variables from specific mechanical properties or desired mechanical properties was the general emphasis of this investigation. The processing variables included the alloy's overall heat treatment, which involves the aging practice (time and temperature) and the solution heat treatment practice, and also the manufacturing processing of the alloy which involved direct extrusion processing. The particular mechanical property of interest for the aluminum-lithium demonstration alloy was the mechanical tensile strength. The microstructure was used as the basis for determining both the composition and the heat treatment processing requirements for obtaining the desired mechanical property. Specifically, a materials design model was designed to determine microstructural parameters from mechanical properties as the basis for prediction and/or specification of the heat treatment processing parameters. An iterative approach was taken to improve the initial determination of thermal processing and composition. The overall approach will design a precipitation hardened alloy heat treatment and composition to satisfy the design tensile strength and microstructure requirements of a given materials design and manufacturing program.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125142648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A combined morphological and color based approach to characterize flotation froth bubbles 一种结合形态和颜色的方法来表征浮选泡沫气泡

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792524

G. Bonifazi, S. Serranti, F. Volpe, R. Zuco

{"title":"A combined morphological and color based approach to characterize flotation froth bubbles","authors":"G. Bonifazi, S. Serranti, F. Volpe, R. Zuco","doi":"10.1109/IPMM.1999.792524","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792524","url":null,"abstract":"Flotation process monitoring and control are complex targets due to the highly non-linear behavior of the process and the large number of variables involved. Control is generally achieved by adopting a human based approach. By observing the surface of flotation cells, experienced plant operators suggest, on the basis of their experience, control actions such as changing the cell level set points and/or modifying reagent doses. The main goal of the paper is to demonstrate that with a combined approach based on evaluation of the morphological and morphometrical features of froth bubbles and their color characteristics, it is possible to perform a froth structure analysis. Froth structure modeling permits us to derive useful information about the flotation process behaviour. The structure analysis carried out by means of digital imaging procedures based on color, texture and morphometry enables definition of froth classes that define mineral concentration using estimation models set up from an analysis of froth images. The paper shows that by adopting such an approach, it is possible to identify different froth classes and utilize the results inside estimation models.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130658097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Data driven knowledge extraction of materials properties 数据驱动的材料属性知识提取

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792507

J. Kandola, S. Gunn, I. Sinclair, Philippa A. Reed

引用次数: 3

Towards a better understanding of fuzzy sets applied to environmental science 为了更好地理解模糊集在环境科学中的应用

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792533

M. Ghomshei, J. Meech

{"title":"Towards a better understanding of fuzzy sets applied to environmental science","authors":"M. Ghomshei, J. Meech","doi":"10.1109/IPMM.1999.792533","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792533","url":null,"abstract":"The fuzzy set of a concept is defined by the distribution function of the degree of belief in a certain qualitative parameter, over a range of variation in a quantitative or less-qualitative parameter. The concept may be expressed with different scaling parameters and each parameter on its own, is not necessarily unique. Thus the form of a fuzzy set depends on the choice of scale. In the environmental field, regulators, health authorities, epidemiologists, politicians, environmentalists, engineers and the general public often have different definitions for a concept such as contamination. The only term which is more or less unequivocally understood by all interested groups is the final \"risk\". Proper definition and scaling of fuzzy sets can provide a common language through which experts from different disciplines can communicate through the entire process of risk assessment. The uncertainty of the input information is propagated in a fuzzy approach and yet the system output will remain fuzzy which can then be translated into either quantitative risk values or qualitative linguistic terms.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"70 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127991206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Models, algorithms and decision support systems for letter mail logistics 信件物流的模型、算法和决策支持系统

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792467

H. Sebastian

引用次数: 0

Unit operations on single levitated particles 对单个悬浮粒子的单元操作

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792586

M. Pappalardo, A. Pellegrino, M. d’Amore, P. Giordano, P. Russo

引用次数: 0

A methodology to diagnose the target cost in a manufacturing process 一种诊断制造过程中目标成本的方法

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-01 DOI: 10.1109/IPMM.1999.792559

A. Arioti, C. Fantozzi, M. Granchi, E. Vettori

引用次数: 1