Nonuniform field runoff can reduce the effectiveness of filter strips that are a uniform size along a field margin. Effectiveness can be improved by placing more filter strip where the runoff load is greater and less where the load is smaller. A modeling analysis was conducted of the relationship between pollutant trapping efficiency and the ratio of filter strip area to upslope contributing ar...

In this paper, we investigate one of the possibilities to adapt an unbiased moving average (MA) filter cfinite impulse response [FIRIjZter) to the slope of time error function. The linear regression coefficient is used as a statistical estimator of sample slope. We evaluate the error of the slope estimate and present two options for the adapting coefficient determination. To examine them, we ge...

A new method for determining the instants of significant excitation in speech signals is proposed. Here, significant excitation refers primarily to the instant of glottal closure within a pitch period in voiced speech. The method is based on the global phase characteristics of minimum phase signals. The average slope of the unwrapped phase of the short-time Fourier transform of linear predictio...

Two new noise-reduction algorithms, namely, the adaptive symmetric mean filter (ASMF) and the hybrid filter, are presented in this paper. The idea of the ASMF is to find the largest symmetric region on a slope facet by incorporation of the gradient similarity criterion and the symmetry constraint into region growing. The gradient similarity criterion allows more pixels to be included for a stat...

An elliptical region of the plane supports a positive-valued function whose Radon transform depends only on the slope of the integrating line. Any two parallel lines that intersect the ellipse generate equal line integrals of the function. We prove that this peculiar property is unique to the ellipse; no other convex, compact region of the plane supports a nonzero-valued function whose Radon tr...

⎯ This paper presents the tunable technique of the analog filter at high frequency fp = 1 MHz by used the Fractional-order ( ) n α + step, where n is an original of integerorder on circuit and α is an approximation order step 0 1 α < < , An approximation order is designed from the Fractance circuits, and also presents the approximation function of the Fractional-order Laplacian sα design on the...

 This paper presents the tunable technique of the analog filter at high frequency fp = 1 MHz by used the Fractional-order   n   step, where n is an original of integerorder on circuit and  is an approximation order step 0 1    , An approximation order is designed from the Fractance circuits, and also presents the approximation function of the Fractional-order Laplacian s  design on th...

This paper presents a new ultra-wideband (UWB) bandpass filter (BPF) with sharp roll-off and dual-notched bands. The filter consists of a triangle ring multi-mode resonator (MMR) with the stub-loaded resonator (SLR) for controlling the two transmission zeros at 2.8 / 11 GHz, the embedded open-circuited stub and the asymmetric tight coupled input/output (I/O) lines for introducing the dual notch...