skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Efficient, Distributed Collection and Analysis of Packet Delay Data for Secure Export

 [1];  [1]
  1. Pollere Inc, Montara, CA (United States)
Publication Date:
Research Org.:
Pollere Inc, Montara, CA (United States)
Sponsoring Org.:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Type / Phase:
Resource Type:
Technical Report
Country of Publication:
United States
42 ENGINEERING; 97 MATHEMATICS AND COMPUTING; Internet delay; passive network monitoring

Citation Formats

Nichols, Kathleen, and Luciani, Joan. Efficient, Distributed Collection and Analysis of Packet Delay Data for Secure Export. United States: N. p., 2016. Web.
Nichols, Kathleen, & Luciani, Joan. Efficient, Distributed Collection and Analysis of Packet Delay Data for Secure Export. United States.
Nichols, Kathleen, and Luciani, Joan. 2016. "Efficient, Distributed Collection and Analysis of Packet Delay Data for Secure Export". United States. doi:.
title = {Efficient, Distributed Collection and Analysis of Packet Delay Data for Secure Export},
author = {Nichols, Kathleen and Luciani, Joan},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 7

Technical Report:
This technical report may be protected. To request the document, click here.
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share:
  • Analysis of CZCS imagery confirms shipboard and aircraft observations of resuspension of near-bottom chlorophyll within surface water (1 to 10 m) by northwesterly wind events in the mid-Atlantic Bight. As much as 8 to 16 Chl l/sup -1/ are found during these wind events from March to May, with a seasonal increase of algal biomass until onset of stratificationn of the water column. Rapid sinking apparently occurs after cessation of the wind events such that the predominant surface chlorophyll pattern is approx.0.5 to 1.5 l/sup -1/ over the continental shelf during the spring bloom. Without enhanced primary productionmore » during a wind event, the annual photosynthetic input of carbon would be approx.270 g C m/sup -2/ yr/sup -1/. Perhaps half of the chlorophyll increase observed by satellite during a wind event represents in situ production of that 4 to 5 day time interval, with the remainder attributed to accumulation of algal biomass previously produced, sunk out, resuspended, and enroute to the shelf break during these offshore transport events. At least 16 to 40 g C m/sup -2/ yr/sup -1/ may be exported as ungrazed phytoplankton carbon from shelf waters to continental slope sediments. 32 refs., 37 figs., 3 tabs.« less
  • The need to collect large quantities of data from spatially separated instruments, such as in studies of turbulent mixing phenomena in vapor clouds resulting from simulated spills of LNG, has led to an examination of the strategies and techniques available for collecting data from spatially separate instruments. This study concentrates on the effects of using microcomputer based ''intelligent'' instruments on the design of data collection systems used in large scale environmental experiments. Conventional telemetry systems require extensive field testing and careful design to ensure successful operation with a large number of different high data rate instruments. Collecting and processing themore » data at each instrument can dramatically improve the performance of a telemetry system, but the problems of system design and testing remain. A central telemetry system is not needed if the data is stored locally at each instrument or cluster of instruments. The advantages of stand-alone instruments which store their own data include enhanced system reliability, greater flexibility of experiment design, and lower design and development cost. Many techniques are available for local data storage. CMOS RAM is preferred for capacities below 10k bytes of data; for larger quantities digital cassette tape drives are optimal. The selection of a suitable microcomputer for a given instrument requires a careful analysis of the software tasks and timing constraints required by the instrument. This potentially difficult design problem is mitigated by the designers control over the degree of coupling desired between the instrument and the microcomputer and the corresponding design complexity. 32 refs., 2 figs., 3 tabs.« less
  • The National Renewable Energy Laboratory (NREL) and the U.S. Department of Transportation (DOT) have launched the free, web-based Transportation Secure Data Center (TSDC). The TSDC ( preserves respondent anonymity while making vital transportation data available to a broad group of users through secure, online access. The TSDC database gives, metropolitan planning organizations, universities, national laboratories, air quality management districts, disaster planning agencies and auto manufacturers free-of-charge web-based access to valuable transportation data. The TSDC's two levels of access make composite data available with simple online registration, and allow researchers to use detailed spatial data after completing a straight forward applicationmore » process.« less
  • This fact sheet describes the Transportation Secure Data Center (TSDC) - an NREL-operated resource that provides secure access to detailed GPS travel data for valuable research purposes in a way that protects original participant privacy.