Real-Time Indicators of Vehicle Kilometers of Travel and Congestion: One Year of Experience

2000 ◽  
Vol 1719 (1) ◽  
pp. 209-214
Author(s):  
Ho-Ling Hwang ◽  
David L. Greene ◽  
Shih-Miao Chin ◽  
Angela A. Gibson
Keyword(s):  
Missing Data ◽  
National Laboratory ◽  
Experimental System ◽  
Automated System ◽  
The Internet ◽  
Seasonal Patterns ◽  
Traffic Data ◽  
Oak Ridge ◽  
Direct Measurements ◽  
One Year

Automated traffic data posted on the Internet by four cities have been continuously downloaded, processed, and archived for more than 1 year by an automated system developed by Oak Ridge National Laboratory and funded by the U.S. Bureau of Transportation Statistics. Although the experimental system is far from national in scale and scope, it has shown that automated collection and processing of local traffic data via the Internet for national purposes is feasible and practical. Strong seasonal patterns make it too early to estimate statistical models of traffic growth, but comparisons of the same months in 1998 and 1999 indicate changes ranging from 1 percent to 3 percent for the monitored systems. Direct measurements of delay on the monitored systems are lower than published estimates for previous years. Although some progress in the input of missing data has been made, missing data are still a major problem, and better methods are needed.

Teaching Microscopy and Microscope Theory Based on Remote Instrument Access and Instrument Automation

2000 ◽  
Vol 6 (S2) ◽  
pp. 1162-1163
Author(s):  
E. Voelkl ◽  
L.F. Allard ◽  
D. Tarnoff ◽  
D.B. Williams ◽  
L.A. Fama
Keyword(s):  
Digital Imaging ◽  
National Laboratory ◽  
Ccd Camera ◽  
The Internet ◽  
Oak Ridge ◽  
Lehigh University ◽  
High Temperature Materials ◽  
Electron Microscopes ◽  
Primary Instrument ◽  
The Way

The intense use of computers to operate electron microscopes as well as the ability to control microscopes remotely over the Internet, is increasingly changing the way electron microscopes are being used and how microscopy is being taught. Practically all of the top-of-the-line electron microscopes offered by the microscope vendors today are fully computer controllable, and provide for digital imaging. The combination of both features with the ever increasing speed of computers has created a situation that has and will continue to change the way electron microscopists work.Lehigh University together with Oak Ridge National Laboratory have collaborated since 1996 to make the instrumentation in the High Temperature Materials Laboratory at ORNL available for teaching purposes. The primary instrument being used is the Hitachi HF-2000 field emission TEM, which is controlled by Gatan's DigitalMicrograph™ (DM) software and uses a Ik by Ik CCD camera for digital imaging.

Plug-in scripts for EFTEM automation

1996 ◽  
Vol 54 ◽  
pp. 546-547
Author(s):  
N. D. Evans ◽  
M. K. Kundmann
Keyword(s):  
Electron Microscopy ◽  
National Laboratory ◽  
Oak Ridge ◽  
Multiple User ◽  
Transmission Electron ◽  
Short Period ◽  
User Facility ◽  
Instrument Control ◽  
And Control ◽  
Research Equipment

Post-column energy-filtered transmission electron microscopy (EFTEM) is inherently challenging as it requires the researcher to setup, align, and control both the microscope and the energy-filter. The software behind an EFTEM system is therefore critical to efficient, day-to-day application of this technique. This is particularly the case in a multiple-user environment such as at the Shared Research Equipment (SHaRE) User Facility at Oak Ridge National Laboratory. Here, visiting researchers, who may oe unfamiliar with the details of EFTEM, need to accomplish as much as possible in a relatively short period of time.We describe here our work in extending the base software of a commercially available EFTEM system in order to automate and streamline particular EFTEM tasks. The EFTEM system used is a Philips CM30 fitted with a Gatan Imaging Filter (GIF). The base software supplied with this system consists primarily of two Macintosh programs and a collection of add-ons (plug-ins) which provide instrument control, imaging, and data analysis facilities needed to perform EFTEM.

Treatment of wastewater by constructed wetland in small settlements

2000 ◽  
Vol 41 (1) ◽  
pp. 69-72 ◽  
Author(s):  
S.Ç. Ayaz ◽  
I. Akca
Keyword(s):  
Environmental Pollution ◽  
Constructed Wetland ◽  
Pilot Plant ◽  
Low Cost ◽  
Experimental System ◽  
Suspended Solid ◽  
Loading Conditions ◽  
Treatment Performance ◽  
Per Capita ◽  
One Year

The constructed wetland is a low-cost technology to control environmental pollution. The system is especially suitable for small settlements. An innovative constructed wetland technology is described in this paper. A pilot plant was used to assess the performance of the system. The experimental system consists of two serial connected tanks that settled up with fillers and Cyperus as treatment media. Wastewater is recycled periodically upward and downward between the two tanks. The treatment performance was monitored in different loading conditions in a one-year period. The average COD removal efficiency of 90% was observed at 122 g COD/m2.day average loading conditions. Other average removal values in the same conditions are as follows: suspended solid 95%, TKN 77%, total nitrogen 61%, PO4-P 39%. The land requirement for this system will be 0.82 m2 per capita when applying as full-scale system.

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