{"title":"Indexing technical data in a materials database","authors":"F. Smith, L.C. Emerson","doi":"10.1109/DKSME.1989.107436","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107436","url":null,"abstract":"Much of the data used by design engineers lack precision, particularly materials property data which are measured in inexact physical experiments and engineering tests. The indexing of such data needs to suit the various types of proximity searches of interest to an engineer. It is shown that B/sup +/-tree performance is best when the data are stored as specific values. A new structure, the interval tree, is presented and shown to be useful when much of the stored data is expressed in the form of ranges.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122289789","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}
{"title":"A work-in-process tracking system for experimental manufacturing","authors":"E. Voorhees","doi":"10.1109/DKSME.1989.107461","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107461","url":null,"abstract":"A work-in-process (WIP) tracking system directs and monitors the flow of product in a factory. The author describes a WIP tracking system that supports the management of complex process plans, ensures that products receive their intended processing, and can be used to determine the actual processing received by finished products. The two major features of the tracker are the representation of process plans as ordered trees of parameterized subprocess plans, and the logging of process data at each process step. The tree representation encourages modular process plans, which makes the plans easier to create and document, and is flexible enough to allow specific items to follow nonstandard subplans or to change plans after processing has begun. The log makes it possible to reconstruct the entire processing sequence of an item and permits measurement values obtained earlier in an item's processing to be used as the value of a later step's parameter, creating a form of feed-forward process control.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131294675","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}
{"title":"An application of entity-relationship data modeling techniques to the automated manufacturing process","authors":"J. Moyne, L. McAfee, T. Teorey","doi":"10.1109/DKSME.1989.107463","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107463","url":null,"abstract":"An entity-relationship (E-R) model has been developed to generically represent aspects of process information flow in a hierarchical automated manufacturing facility. The facility is expected to be networked and to consist of a global controller, local controllers, etc. and IC processing equipment, organized in a hierarchical fashion. The development of the model is presented through a case study of an automated semiconductor manufacturing facility. In developing the model, subschemas are first developed for the various component modules in the facility. The modules are then incorporated using a form of E-R model clustering and integration techniques into a schema for the entire facility. The generic structural properties of the schema are clearly evident. The development and application of E-R constructs to model time sequencing and ordering aspects of process information flow in the facility are potential areas of future research.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132634990","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}
{"title":"Geometry-based similarity retrieval of rotational parts","authors":"R. Schneider, H. Kriegel, B. Seeger, Stephan Heep","doi":"10.1109/DKSME.1989.107455","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107455","url":null,"abstract":"In available retrieval and classification systems, parts are described using attributes comparable to those in traditional database systems. The authors suggest a system for retrieval of parts having geometric similarity which accesses a database system storing the geometric data provided by the CAD system. By maintaining, storing and manipulating the complete geometric information of objects, the approach leads to great flexibility and efficiency for similarity and other queries.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128108665","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}
{"title":"Dynamic scheduling in a steel plant using expert system","authors":"M. J. Shah, R. Damian","doi":"10.1109/DKSME.1989.107460","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107460","url":null,"abstract":"Summary form only given. An interactive expert system application is described for scheduling of resources in continuous manufacturing of a variety of products in a hierarchically distributed control system. The system allows the relaxation of certain rule constraints to attain a feasible schedule when none is available and the processing of an expedited/special order even when this results in violating one or more constraints. The information on a scheduled production run not meeting the specification is transmitted to the expert system application from lower-level systems in the hierarchy, which perform monitoring and control of the production equipment. The technique is illustrated with an application in steel production.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128415241","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}
{"title":"Systems design issues in manufacturing process control","authors":"K. Wong","doi":"10.1109/DKSME.1989.107441","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107441","url":null,"abstract":"A manufacturing plant process control system generally has hierarchical layers of control and involves many elements of technology. A discussion is presented of the requirements and design issues for manufacturing process control (MPC). Much of the discussion focuses on process-control technology as it relates to system design.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114929549","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}
{"title":"A system for creating and manipulating mechanical part models based on PDES","authors":"J. Fowler","doi":"10.1109/DKSME.1989.107453","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107453","url":null,"abstract":"The Automated Manufacturing Research Facility of the National Institute of Standards and Technology is moving towards the use of PDES-based definitions for mechanical parts. (PDEs is the emerging product data exchange specification standard). This effort is in conjunction with NIST's designation as the National PDES testbed. Currently, commercial CAD systems do not directly support the use of PDES-based models and are generally not capable of representing much of the information specified by PDES in an integrated fashion. The author is implementing a system to address these limitations of CAD systems, demonstrating the functionality required for PDES-based part modeling. The design issues, architecture, and functionality of the system are presented.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128011752","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}
{"title":"Integrated material resource planning/scheduling in a time-compressed world","authors":"G. Bennett, D. Ries","doi":"10.1109/DKSME.1989.107458","DOIUrl":"https://doi.org/10.1109/DKSME.1989.107458","url":null,"abstract":"Summary form only given. Advanced systems are based on a model of the factory that schedules (and continually reschedules) the use of material, machines and people resources to demands and orders placed on the factory. Rule-based systems are used to route orders to processes in the factory, to select material based on current inventory levels and processing alternative, and to select workstations and staff pools for the processes. The integrated materials resources planning is tied to actual factory capacities. This integration insures that the material is available when it can be needed and when it can be used. The advantage over other systems is that standard MRP2 approaches sometimes require raw material to be purchased too early based on standard lead-times; in other cases the standard MRP2 systems can result in later delivery of products.<<ETX>>","PeriodicalId":228213,"journal":{"name":"Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125843918","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}