An asynchronous FIR filter, based on a Single Bit-Plane architecture with a data-dependent, dynamic-logic implementation, is presented. Its energy consumption and sample computation delay are shown to correlate approximately linearly with the total number of ones in its coeflcient-set. The proposed architecture has the property that coefficients in a SignMagnitude representation can be handled ...

We consider a size-structured model for cell division and address the question of determining the division (birth) rate from the measured stable size distribution of the population. We formulate such question as an inverse problem for an integro-differential equation posed on the half line. We develop firstly a regular dependency theory for the solution in terms of the coefficients and, secondl...

In this paper, the correlation between cepstrum coefficients and fundamental frequencies (F0) is quantitatively analyzed. One of our previous studies pointed out that cepstrum coefficients of vowel sounds are varied because of F0 changes and that the variation can be modeled by the multivariate regression analysis. After this previous study, the current work is focused upon the analysis of the ...

Clouds are the largest modulators of the solar radiative flux reaching the Earth’s surface. The amount and type of cloud cover prevailing at a given time and location largely determines the amount and type of solar radiation received at the Earth’s surface. This cloud radiative forcing is different for the different solar spectral bands. In this work, we analysed the influence of cloud radiativ...

The paper presents a method for integrating two different types of data analysis: symbolic inductive learning and statistical methods. The method concerns the problem of discovering rules characterizing the dependence between a group of dependent attributes and a group of independent groups, e.g., decision attributes and measurable attributes. The method proceeds along two paths. One paths gene...

BACKGROUND The Pfeffer Functional Activities Questionnaire (PFAQ) is a validated instrument used in Chile to diagnose dependency in older people. AIM To suggest a shorter and easier version of the PFAQ, with appropriate levels of sensitivity and specificity, which may be applied to the general older population. MATERIAL AND METHODS Three Chilean surveys applied to older people were used, na...

We review three alternative approaches to modelling survey noncontact and refusal: multinomial, sequential and sample selection (bivariate probit) models. We then propose a multilevel extension of the sample selection model to allow for both interviewer effects and dependency between noncontact and refusal rates at the household and interviewer level. All methods are applied and compared in an ...

Diffusion processes in ultra-thin liquid films observed by video microscopy reveal a complex behavior. In contrast to homogeneous diffusion, dynamic and static heterogeneities are induced by layer transitions and compartments with differing diffusion coefficients, respectively. The objective of this research is the detection and distinction of such heterogeneities as well as an analysis of the ...

It is proved in this note that all Hurwitz polynomials of ordernot less than n form two simply connected Bore1 cones in the polynomialparameter space. Based on this result, edge theoremsfor Hurwitz sta-bility of general polyhedrons of polynomials and boundary theorems forHurwitz stability of compact sets of polynomials are obtained. Both casesof families of polynomials w...

Calcium is a critically important second messenger in the nervous system. It enters through voltage-gated Ca2+ channels and regulates release of synaptic transmitter. This mechanism monitored by calcium diffusion, buffering influx into cytoplasm. The study dynamics interesting because concentration shows highly complex spatial-temporal behavior. There are many controls on cytoplasmic concentrat...