Introduction
What is QRS II?
Version 7
Quick Response System II runs the four-step planning process – trip generation, trip distribution, mode split, traffic/transit assignment – for highway and transit forecasting. Networks and data are entered and edited graphically using the powerful General Network Editor.
The Windows environment, with its buttons, menus and dialog boxes, permits fast setup of simulations, retrieval of results and data transfer to many other Windows applications, such as spreadsheets, wordprocessors and graphic packages. An advanced version of GNE also is available.
QRS II is a state-of-the-art planning package, which can replace UTPS, Planpac, and other similarly outdated planning packages. It can provide traditional region-wide forecasting, as well as site impact analysis and corridor analysis.
Among its advanced capabilities, QRS II performs equilibrium traffic assignment and stochastic multipath transit trip assignment. Dynamic and/or multiclass equilibrium traffic assignment is also available for highway networks. It explicitly considers the effects of traffic-controlled intersections – signals and signs – following the 2000 Highway Capacity Manual. Traffic congestion is fully reflected in forecasts of patterns of travel, as well as the presence of conflicting and opposing traffic. Default parameters are supplied, but can be easily modified, either in dialog boxes or in text files. Although QRS II is not specifically a sketch-planning tool, it does support the highly popular sketch-planning procedures found in NCHRP Report #187 and #365. QRS II provides an extensive range of methods for refining forecasts from traffic counts.
The latest release, Version 7, provides editions with up to 6000 zones with 4 gravity-model trip purposes plus user-definable trip purposes. Networks can have up to 100,000 highway links and 216,000 transit links. An extensive on-line Help topics list and a 300-page manual are included. Utility software is provided to assist conversion to QRS II from other travel forecasting packages and GISs.
The 32-bit Windows (95 to XP) edition of QRS II offers exceptional speed of calculation and true multitasking with other Windows applications.
What is the Advanced GNE?
Version 7
Alan talks about GNE 6.
General Network Editor for Windows, version 7, is a powerful graphics and data management system. It provides all the functions necessary for fast, easy data entry and network editing. Network editing capabilities include on-screen link and node plotting, deletion and restoration, transformations, search functions, node move, link split and splice, true scrolling, network append, zoom magnification, polygons, link shape, node and link initialization and layers.
All popular PC hardware is supported: graphics cards at all resolutions; pointing devices; and digitizers. Overlapping and movable windows allow simultaneous and mulitple views of the data and the network.
The Advanced GNE expands data management control and graphics potential. It includes Extract and Update for exchange of data between GNE and other software packages – such as spreadsheets and database managers – and to permit manipulation and transfer of data between different GNE networks. Customized BASIC-like programs can be created within GNE and incorporated using the Calculate feature, including air pollutant emissions calculations and VMT estimates. Polygons have user-definable styles, and their characteristics, such as area, perimeter, and center of gravity, can be utilized in Calculate, Extract, and worksheets.
The Advanced GNE for Windows will plot to any pen plotter or printer compatible with Windows (all popular brands), as well as to the Clipboard. Clipboard plot images can be saved and transported to other graphics programs, desktop publishers and word processors. Labels, variable link widths, variable node sizes, and variable element colors can be shown on screen and plots. GNE also displays a variety of background graphics in such formats as JPEG and EMF. GNE can read TIGER 2000 files and "shape" files from GISs.
An extensive on-screen help is supplemented by a comprehensive 150-page reference manual, which has been expanded to include sample programs and examples.
Who is AJH Associates?AJH Associates consists entirely of Shirley and Alan Horowitz. AJH Associates was formed in June 1987, shortly after the FHWA decided that QRS II represented unfair competition to privately developed travel forecasting models, and suspended its own distribution of QRS II. Alan, who has a full-time faculty appointment in the Civil Engineering Department at the
University of of Wisconsin -- Milwaukee
, is the author of QRS II and GNE. Shirley handles all publishing and business duties.
AJH Associates is located in the village of Whitefish Bay, Wisconsin -- a charming suburban community on Lake Michigan, a few miles north and east of Milwaukee.
Shirley holds a BA and an MA in English literature from UCLA. From 1973 to 1982 she held editorial positions in various publishing houses, ultimately rising to Publisher of Creative Homeowner Press. Shirley has edited nearly 200 books and has co-authored several others. Her books gathered 30 major book club selections. Many of her books are still in print. Between 1982 and 1987, Shirley devoted her time exclusively to raising a family. Since the inception of AJH Associates in 1987, she has juggled family reponsibilities with customer assistance, fulfillment, manual preparation, and marketing.
Alan has a PhD in Urban Planning and both a BS and an MS in Engineering from UCLA. He is currently a Professor of Civil Engineering at UWM. He joined UWM's faculty in 1979, after spending 4 years at General Motors Research Laboratories. He has authored over fifty published articles, and has directed numerous research projects about transportation for government agencies.
However, our smiling AJH Frog means nothing whatsoever, except to suggest the personal and friendly nature of AJH Associates. Some users have offered that he represents the bug-eating, cheerful quality of service that we (Alan and Shirley) try to maintain.
TOTAL：
http://my.execpc.com/~ajh
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本帖最后由 yanyan 于 2007-9-14 13:57 编辑 ]
