Cost and size reductions in implementing personal wireless communication transceivers through advances in CMOS RF integrated circuits

Allen, Stuart M.; Bezzam, Ignatius; Richmond, G.

doi:10.1109/icpwc.1997.655494

Cited by 4 publications

(6 citation statements)

References 5 publications

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“…The pollen counts were recorded and found to be slightly higher than in the previous two pollen seasons (Allen, 1975), confirming the adequacy of the pollen challenge. Pollen spores were first detected sporadically in mid-May in small concentrations, but consistent counts were not obtained until the first week in June which was therefore regarded as the start of the pollen season.…”

Section: Resultssupporting

confidence: 57%

Comparison of a glutaraldehyde‐modified pollen–tyrosine adsorbate with an alum‐precipitated pollen vaccine in the treatment of hay fever

Symington

O'Neill

Kerr

1977

Clin Experimental Allergy

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Summary Nineteen patients with hay fever symptoms received nine weekly injections of a pyridine‐extracted alum‐precipitated grass pollen vaccine (Alavac P). The results were compared with a group of twenty patients who received a three injection series of a glutaraldehyde‐modified pollen–tyrosine vaccine (Pollinex). In both groups 65% had a subjective improvement in their symptoms and no significant difference in symptom scores was obtained throughout the pollen season. In the Pollinex group a lower incidence of systemic side effects was recorded.

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Section: Resultssupporting

confidence: 57%

Comparison of a glutaraldehyde‐modified pollen–tyrosine adsorbate with an alum‐precipitated pollen vaccine in the treatment of hay fever

Symington

O'Neill

Kerr

1977

Clin Experimental Allergy

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“…For PM 2.5 , mobile DustTrak measurements (mean of 49 µg/m 3 ) were quite high compared to expected background levels, but much of this discrepancy is likely a function of instrumentation. Focusing on the fixed-site TEOM measurements, the mean PM 2.5 concentration across all sampling days (19 µg/m 3 ) did exceed both the U.S. Environmental Protection Agency's proposed annual standard and the mean concentration from a sampling location approximately 1 mile from Dudley Square (15 mg/m 3 for both) (28). If PM 2.5 concentrations were similar for other times of the year, this might imply that the local sources in Dudley Square could contribute incremental concentrations that would lead to violations of the proposed PM 2.5 annual standard.…”

Section: Discussionmentioning

confidence: 86%

“…PAH concentrations were continuously measured at this fixed site for the entire sampling period. In addition, given a lack of fixed-site PM 2.5 data due to instrument limitations, we used data gathered by other researchers using a TEOM situated in Dudley Square (28).…”

Section: Methodsmentioning

confidence: 99%

“…For mobile measurements of PM 2.5 , the mean concentration was 49 µg/m 3 (SD = 65). Although we did not collect comparable fixed-site PM 2.5 data due to instrument limitations, we used TEOM data gathered by other researchers in Dudley Square to provide a concentration estimate (28). For the dates and times of our mobile monitoring, the mean PM 2.5 concentration measured by TEOM was 15 µg/m 3 To demonstrate temporal trends in the data without confounding by location, we focus on PAH concentrations measured at the fixed monitoring site.…”

Section: Summary Of Findingsmentioning

confidence: 99%

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Fine Particulate Matter and Polycyclic Aromatic Hydrocarbon Concentration Patterns in Roxbury, Massachusetts: A Community-Based GIS Analysis

Levy¹,

Houseman²,

Spengler³

et al. 2001

Environmental Health Perspectives

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ArticlesGiven an elevated prevalence of respiratory disease and density of pollution sources, residents of Roxbury, Massachusetts, have been interested in better understanding their exposures to air pollution. To determine whether local transportation sources contribute significantly to exposures, we conducted a community-based pilot investigation to measure concentrations of fine particulate matter (particulate matter < 2.5 µm; PM 2.5 ) and particle-bound polycyclic aromatic hydrocarbons (PAHs) in Roxbury in the summer of 1999. Community members carried portable monitors on the streets in a 1-mile radius around a large bus terminal to create a geographic information system (GIS) map of concentrations and gathered data on site characteristics that could predict ambient concentrations. Both PM 2.5 and PAH concentrations were greater during morning rush hours and on weekdays. In linear mixed-effects regressions controlling for temporal autocorrelation, PAH concentrations were significantly higher with closer proximity to the bus terminal (p < 0.05), and both pollutants were elevated, but not statistically significantly so, on bus routes. Regressions on a subset of measurements for which detailed site characteristics were gathered showed higher concentrations of both pollutants on roads reported to have heavy bus traffic. Although a more comprehensive monitoring protocol would be needed to develop robust predictive functions for air pollution, our study demonstrates that pollution patterns in an urban area can be characterized with limited monitoring equipment and that university-community partnerships can yield relevant exposure information. Key words: community-based research, fine particulate matter, geographic information system, personal exposure, polycyclic aromatic hydrocarbons, transportation. Environ Health Perspect 109:341-347 (2001). [Online 8 March 2001] http://ehpnet1.niehs.nih.gov/docs/2001/109p341-347levy/abstract.html

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“…Here we concentrate instead on the randomized sampling strategy originally proposed by Allen [23] and later studied by Babak [24], Messenger et al [25], and Harry et al [26]. In its simplest incarnation (pure random sampling), the idea is to draw a set of points that are (pseudo-)randomly distributed across H .…”

Section: Introductionmentioning

confidence: 99%

Cover art: Issues in the metric-guided and metric-less placement of random and stochastic template banks

Manca

Vallisneri

2010

Phys. Rev. D

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The efficient placement of signal templates in source-parameter space is a crucial requisite for exhaustive matched-filtering searches of modeled gravitational-wave sources, as well as other searches based on more general detection statistics. Unfortunately, the current placement algorithms based on regular parameter-space meshes are difficult to generalize beyond simple signal models with few parameters. Various authors have suggested that a general, flexible, yet efficient alternative can be found in randomized placement strategies such as random placement and stochastic placement, which enhances random placement by selectively rejecting templates that are too close to others. In this article we explore several theoretical and practical issues in randomized placement: the size and performance of the resulting template banks; the very general, purely geometric effects of parameter-space boundaries; the use of quasirandom (self-avoiding) number sequences; most important, the implementation of these algorithms in curved signal manifolds with and without the use of a Riemannian signal metric, which may be difficult to obtain. Specifically, we show how the metric can be replaced with a discrete triangulation-based representation of local geometry. We argue that the broad class of randomized placement algorithms offers a promising answer to many search problems, but that the specific choice of a scheme and its implementation details will still need to be fine-tuned separately for each problem.

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Cost and size reductions in implementing personal wireless communication transceivers through advances in CMOS RF integrated circuits

Cited by 4 publications

References 5 publications

Comparison of a glutaraldehyde‐modified pollen–tyrosine adsorbate with an alum‐precipitated pollen vaccine in the treatment of hay fever

Comparison of a glutaraldehyde‐modified pollen–tyrosine adsorbate with an alum‐precipitated pollen vaccine in the treatment of hay fever

Fine Particulate Matter and Polycyclic Aromatic Hydrocarbon Concentration Patterns in Roxbury, Massachusetts: A Community-Based GIS Analysis

Cover art: Issues in the metric-guided and metric-less placement of random and stochastic template banks

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