We study methods for constructing confidence intervals, and confidence bands, for estimators of receiver operating characteristics. Particular emphasis is placed on the way in which smoothing should be implemented, when estimating either the characteristic itself or its variance. We show that substantial undersmoothing is necessary if coverage properties are not to be impaired. A theoretical an...

This paper presents the design of an image-reject continuous-time (CT) quadrature bandpass (QBP) ∆Σ modulator using a tailored signal-transfer-function (STF) design. The quadrature delta-sigma noise shaping with polyphase filter implementations and strategic IF placement effectively improve image rejection internally. The Fifth-order CT QBP ∆Σ modulator planned for WiMAX and Bluetooth standards...

Real-world performance of the ATSC DTV standard has been the subject of great interest and debate. In this paper, we report on a detailed study of reception at 34 sites in the Dallas-Ft. Worth region during September, 2000. We report on statistics such as field strength, service availability, system performance, building attenuation, site margin, and sensitivity to antenna placement. These test...

Massively parallel multicomputers require a high-performance interconnection network. The physical channels which connect nodes in the network are the components that most commonly impose restrictions on the amount of data which can be communicated between nodes of the network. Several di erent schemes for maximizing the bandwidth of physical interconnection channels are examined. Conventional ...

Orthogonal frequency division multiplexing (OFDM) is, with substantial progress in digital signal processing, becoming an important part of the telecommunications arena. The most appealing feature of OFDM is the simplicity of the receiver design due to the efficiency with which OFDM can cope with the effects of frequency-selective multipath channels. Multicarrier systems such as OFDM are, howev...

An experimental and theoretical energy and exergy analysis was conducted for a cylindrical cavity receiver employed in a parabolic dish collector. Based on simultaneous energy and exergy analysis, the receiver average wall temperature and overall heat transfer coefficient were determined. A simplified Nusselt number for Heat Transfer Fluid (HTF) through the receiver as a function of Reynolds an...

The idea of using measurements such as biomarkers, clinical data, or molecular biology assays for classification and prediction is popular in modern medicine. The scientific evaluation of such measures includes assessing the accuracy with which they predict the outcome of interest. Receiver operating characteristic curves are commonly used for evaluating the accuracy of diagnostic tests. They c...

adequate coverage is one of the main problems for distributed wireless sensor networks and the effectiveness of that highly depends on the sensor deployment scheme. given a finite number of sensors, optimizing the sensor deployment will provide sufficient sensor coverage and save power of sensors for movement to target location to adequate coverage. in this paper, we apply fuzzy logic system to...