منابع مشابه
Use of bioindicators and passive sampling devices to evaluate ambient ozone concentrations in north central Pennsylvania.
Ambient concentrations of tropospheric ozone and ozone-induced injury to black cherry (Prunus serotina) and common milkweed (Asclepias syriaca) were determined in north central Pennsylvania from 29 May to 5 September 2000 and from 28 May to 18 September 2001. Ogawa passive ozone samplers were utilized within openings at 15 forested sites of which six were co-located with TECO model 49 continuou...
متن کاملEstimates of ozone AOT40 from passive sampling in forest sites in South-Western Europe.
Weekly-fortnightly ozone (O3) concentrations measured by passive sampling at 81 forest monitoring plots in France, Italy, Spain and Switzerland over the period 2000-2002 were used to estimate the cumulative exposure index AOT40. The estimation method is based on a deterministic model which describes the O3 daily profile as a function of relative altitude (the difference between the altitude of ...
متن کاملSampling for Passive Internet Measurement: A Review
Sampling has become an integral part of passive network measurement. This role is driven by the need to control the consumption of resources in the measurement infrastructure under increasing traffic rates and the demand for detailed measurements from applications and service providers. Classical sampling methods play an important role in the current practice of Internet measurement. The aims o...
متن کاملStochastic Optimization of Distributed Sampling System Placement for Passive Measurement
Flow-level traffic measurement is important for network traffic accounting, traffic engineering, and network security. However, flow-level measurement in high speed networks poses great challenges due to the requirements of high packet processing speed and large memory size (high time/space complexity). To reduce these demanding requirements, sampling is usually used and samplers are deployed i...
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ژورنال
عنوان ژورنال: Journal of the Air & Waste Management Association
سال: 1990
ISSN: 1047-3289
DOI: 10.1080/10473289.1990.10466694