The demodulation of phase encoded high frequency carrier signals is a problem encountered in many applications and areas of research. Numerous electronic methods for demodulation of the carrier, including digital counting techniques and quadrature mixing demodulation have become standard.l Alternatively, the waveforms can be digitized and the phase extracted computationally.Q As the carrier fre...

This paper focuses on the problem of clustering data from a hidden or a deep web data source. A key characteristics of deep web data sources is that data can only be accessed through the limited query interface they support. Because the underlying data set cannot be accessed directly, data mining must be performed based on sampling of the datasets. The samples, in turn, can only be obtained by ...

In PLL designs, a wide loop bandwidth is often desired as it offers fast settling time, reduces on-chip loop filter area and sensitivity of the VCO to pulling. The reference spur is a major issue when the bandwidth is increased, because ripples on the VCO control line undergo less filtering by the loop filter. This paper proposes design techniques based on sub-sampling phase detection to reduce...

The generalized Replica Exchange Method (gREM) is extended into the isobaric-isothermal ensemble, and applied to simulate a vapor-liquid phase transition in Lennard-Jones fluids. Merging an optimally designed generalized ensemble sampling with replica exchange, gREM is particularly well suited for the effective simulation of first-order phase transitions characterized by "backbending" in the st...

we develop a two phase sampling procedure to determine the sample size necessary to estimatethe population mean of a normally distributed random variable and show that the resulting estimator has preassigned variance and is unbiased under a regular condition. we present a necessary and sufficient condition under which the final sample mean is an unbiased estimator for the population mean.

The two main and contradicting criteria guiding sampling design are accuracy of estimators and sampling costs. In stratified random sampling, the sample size must be allocated to strata in order to optimize both objectives. In this note we address, following a biobjective methodology, this allocation problem. A two-phase method is proposed to describe the set of Pareto-optimal solutions of this...

We present a powerful replica exchange method, particularly suited to first-order phase transitions associated with the backbending in the statistical temperature, by merging an optimally designed generalized ensemble sampling with replica exchanges. The key ingredients of our method are parametrized effective sampling weights, smoothly joining ordered and disordered phases with a succession of...

We propose an efficient sampling based outlier detection method for large high-dimensional data. Our method consists of two phases. In the first phase, we combine a “sampling” strategy with a simple randomized partitioning technique to generate a candidate set of outliers. This phase requires one full data scan and the running time has linear complexity with respect to the size and dimensionali...

BACKGROUND In recent years, X-ray phase-contrast imaging techniques have been extensively studied to visualize weakly absorbing objects. One of the most popular methods for phase-contrast imaging is in-line phase-contrast imaging (ILPCI). Combined with computed tomography (CT), phase-contrast CT can produce 3D volumetric images of samples. To date, the most common reconstruction method for phas...