103 research outputs found
A comparison of methods for discrete L_1 curve-fitting
No full textWe study discrete L_1, curve-fitting of n points in k dimensional space. Execution times for the algorithms of Barrodaie-Roberts (BR), Bartels-Conn-Sinclair (BCS), and Bloomfieid-Steiger (BS) - three of the best LAD curve-fitting procedures - are compared over a variety of deterministic and random curve-fitting problems. Analysis of the results allows us to make surprisingly precise statements about the computational complexity of these algorithms. In particular, BR is in a different complexity ciass than BCS and BS as the number of points,n, increases. All algorithms are linear in'the dimension, k, andBS is less complex than BCS.Technical report DCS-TR-9
Analysis of the conform process: a specific form of aluminium extrusion.
No full textSince the Conform process was patented 30 years ago, there have only been approximately 200 machines sold worldwide. Given that Conform competes economically with conventional extrusion and is also reported to be a more energy
efficient process, it is surprising that the use of Conform is not more widespread in today's increasingly environmentally conscious and high-production focussed world. One explanation for this is likely to be due to the fact that there is still limited knowledge of the thermo-mechanical behaviour of the workpiece during extrusion.
Furthermore, for the aluminium industry, there are still issues remaining regarding the production of flash and the quality of the extrudate in terms of mechanical properties. This study provides the reader with the findings of the research and experimental work undertaken by the author, his co-workers and fellow specialists, in the field of aluminium extrusion including Conform. The experimental work includes both laboratory experiments performed with a direct extrusion press and an experimental machine set up to replicate the Conform process. The experimental work is also simulated using finite element modelling techniques. The results from these analyses are then validated by comparing industrial and experimental data. The finite element analyses are enhanced by using parallel processing technology and user sub-routines. The author proposes new models to allow for the study of the different sub-processes in Conform. These include the coining of the feedstock, formation of the upset zone, extrusion of the flash, the filling-up of the expansion chamber / feeder plate and the extrusion of the extrudate. The author also investigates methods which predict microstructure and surface cracks in the extrudate. The author suggests innovative techniques to improve the efficiency of finite element analysis in metal forming. Finally the author recommends procedures for the study of structural integrity and the optimisation of the tooling used in Conform
Transportation plan : Union County
No full text122 pp. Bookmarks supplied by UO. Maps, charts, figures, tables, appendices. Published April, 1979. Scanned by UO from item HT393 .072 U525 1979, April, 2009.The Union County Transportation Plan is a Comprehensive Plan
Element prepared to be a guide in transportation planning
and to improve the decision-making involving transportation.
It is also hoped that this document will aid in economic and
general planning for the County. [From the document]"The preparation of this report was financed in part
through an Oregon State Land Conservation and
Development Commission Planning Assistance Grant.
Comprehensive plan : City of Malin
No full text34 pp. Includes maps. Published April, 1980. Received from ODOT January 2, 2007.The Malin Comprehensive Plan.... will serve as a useful guide for both private and public investments and improvements in the years to come.... provide[s] for growth of various types, i.e., residential, commercial and industrial in a variety of locations, recognizing access and service needs and limitations, and the compatibility of such uses with existing surrounding area development. [From the Plan]"This document was prepared in part through a State Land Conservation and Development Commission Planning Assistant Grant.
Comprehensive plan : City of Chiloquin
No full text36 pp. Includes map. Adopted May 12, 1980. Received from ODOT January 2, 2007.This Comprehensive Plan isa public document prepared by the City, assisted by the Planning Commission and community residents. It provides long-range guidelines for decision-making with regard to land-use suitablility, development proposal evaluation, public utility, facility and street improvement planning and other considerations related to community growth. [From the Plan]"This document was prepared in part through a State Land Conservation and Development Commission Planning Assistant Grant.
Comprehensive plan draft III : City of Merrill
No full text140 pp. Bookmarks supplied by UO.Includes maps and figures. Published February 1980. Received from ODOT January 2, 2007.This Comprehensive Plan is a public document prepared by the City, assisted by the Planning Commission and community residents. It provides log-range guidelines for decision-making with regard to land use suitability, development proposal evaluation, public utility, facility and street improvement planning and other considerations related to community growth. [From the Plan
City of La Grande : Ordinance No. 3038
No full text229 pp. Bookmarks supplied by UO. Comprehensive map in separate file in this item. Adopted 1983. Last amemded October 5, 2005. Captured May 16, 2006.The three basic purposes of this Plan are (1) to encourage desirable growth, (2) to
accommodate anticipated development, and (3) to make provisions for those uses which may be
needed by a community, but which may have such undesirable characteristics as noise, smoke, or
odor.
The Plan can be used to encourage desirable growth in that it identifies those uses which are
wanted, and provides areas for their development. Anticipated development, as projected in the
Plan, can be accommodated by constructing those road and utility improvements which will be
needed in order for that development to be realized. The Plan has also attempted to provide for
the location of those uses which may have undesirable characteristics, but are needed in the
community. [From the Plan
Comprehensive plan of 1984 : City of Long Creek
No full text45 pp. Bookmarks supplied by UO. Maps, tables. Published October, 1980; revised July, 1984 and revisions adopted June 5, 1985. Scanned by UO from item HT168 .L58 L58 1985, May, 2009.The overall purpose of the Plan is to attempt to describe a pathway into
the future. [From the Plan]"This Report was financed in part through Planning Assistance
Grants from the State Department of Land Conservation and
Development.
Land use plan : Union County, Oregon
No full text127 pp. Bookmarks supplied by UO. Maps, tables, figures, appendices. Published April, 1979. Scanned by UO March, 2009.This Land Use Plan is a public document
prepared by governing bodies assisted by advisory committees,
planning commissions and community residents. It provides
long-range guidelines for decision-making with regard to
land use suitability, development proposal evaluation,
public utility, facility and street improvement planning and
other considerations related to community growth. [From the Plan]"The preparation of this report was financed In part through an Oregon State
Land Conservation and Development Commission planning assistance grant, In
part by the Blue Mountain Intergovernmental Council, and in part by the U.S.
Department of Housing and Urban Development under the Urban Planning
Assistance Program authorized by Section 701 of the Housing Act of 1954 as
amended.
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