rice cultivated areas and yield information is indispensable for sustainable management and economic policy making for this strategic food crop. introduction of high spectral and special resolution satellite data has enabled production of such information in a timely and accurate manner. knowledge of the spectral reflectance of various land covers is a prerequisite for their identification and ...

Laser phase-induced intensity noise limits the dynamic range of all kinds of recirculating structures under short coherence illumination. The shape of the power spectrum of this noise, while it is always periodic, depends on the device type. Recirculating delay lines and the reflecting Fabry-Perot interferometer (F-P) exhibit minimum noise at integer multiples of 1/(round-trip time), whereas th...

Suppose that c is an operator on a Hilbert Space H such that the von Neumann algebra N generated by c is finite. Let τ be a faithful normal tracial state on N and set b1 = (c+ c )/2 and b2 = (c− c)/2i. Also write B for the spectral scale of {b1, b2} relative to τ . In previous work by the present authors, some joint with Nik Weaver, B has been shown to contain considerable spectral information ...

The rapid progress of semiconductor technologies enables the integration of huge amount of transistors on the same chip but creates new problems for digital and analog designers. The very high speed of operation allows millimeterwave CMOS circuits but various limits challenge the analog designer that must find new solutions. Key limits are the intrinsic gain of MOS transistors, the gate leakage...

We report the spectroscopic detection of mid-infrared emission from the transiting exoplanet HD 209458b. Using archive data taken with the Spitzer IRS instrument, we have determined the spectrum of HD 209458b between 7.46 and 15.25 m. We have used two independent methods to determine the planet spectrum, one differential in wavelength and one absolute, and find the results are in good agreement...

We define the complete numerical radius norm for homomorphisms from any operator algebra into B(H), and show that this norm can be computed explicitly in terms of the completely bounded norm. This is used to show that if K is a complete Cspectral set for an operator T , then it is a complete M -numerical radius set, where M = 12 (C + C −1). In particular, in view of Crouzeix’s theorem, there is...

A Bayesian method of estimating the power spectra of stationary random processes is proposed. Initially we estimate the true spectra via the log pe-riodogram but due to the inadequacies of the periodogram when the true spectrum has a high dynamic range and/or is rapidly varying for such problems we use the multitaper spectrum estimates which have known error distributions. Piecewise polynomials...

We present a new broadband technique for the measurement of diffuse light transport through opaque scattering media. Using the spectral correlations introduced by a scattering medium onto a white-light supercontinuum spectrum, the diffusion constant of light is determined over a wide spectral range in the visible and near infrared. Independent broadband measurements of both the transport mean f...