نتایج جستجو برای: distribution system ds
تعداد نتایج: 2742667 فیلتر نتایج به سال:
An approach to prognosis of behavior of an unknown dynamical system (DS) from weakly nonstationary chaotic time series (TS) containing significant measurement noise is proposed. The approach is based on construction of a global time-dependent parametrized model of discrete evolution operator capable of reproducing nonstationary dynamics of reconstructed DS. A universal model in the form of arti...
Objective: This research is compromised emotional maturity in boys’ adolescents with Down syndrome (12-18) years that study in formal and exceptional schools. Materials & Methods: At first 15 boy’s students with DS that study in formal school matched with 15 students in Exceptional school (IQ, , age, family education and socioeconomic state were same) . Then EMS (Emotional Maturity Scale) wa...
A class of unified multicarrier DS-CDMA (MC DS-CDMA) schemes is defined and its performance is considered over multipath Nakagamim fading channels. The spacing between two adjacent subcarriers of the unified MC DS-CDMA scheme is a variable, allowing us to gain insight into the effects of the spacing on the bit error rate (BER) performance of MC DS-CDMA systems. This unified MC DS-CDMA scheme in...
The Drinfeld-Sokolov (DS) system was first introduced by Drinfeld and Sokolov and it is a system of nonlinear partial differential equations owner of the Lax pairs of a special form [1]. The physical motivation of this system was explained in detail by Ref.[2]. Generalized form of the DS system has been studied by different authors using the various methods [3, 4, 5, 6, 7, 8, 9, 10]. In order t...
We investigate a recent suggestion that the spatial distribution of earthquake hypocenters makes a fractal set with a structure and fractal dimensionality close to those of the backbone of critical percolation clusters, by analyzing four different sets of data for the hypocenter distributions and calculating the dynamical properties of the geometrical distribution such as the spectral dimension...
In this paper, the impact of timing jitter in direct sequence ultra wideband (DS-UWB) system is investigated over multipath fading channel. Also, a novel hybrid direct sequence multiband UWB (DS-MBUWB) system is proposed to mitigate the impact of timing jitter. We analyze and compare the system performance for conventional DS-UWB and hybrid DS-MB-UWB with Rake receiver in the presence of timing...
BACKGROUND Children with Down syndrome (DS) have an increased risk for acute lymphoblastic leukemia (ALL). Although previous studies have shown that DS-ALL differs clinically and genetically from non-DS-ALL, much remains to be elucidated as regards genetic and prognostic factors in DS-ALL. METHODS To address clinical and genetic differences between DS-ALL and non-DS-ALL and to identify progno...
length N um be r of r ec or ds Abstract length distributionlength distribution Figure 5.8 Abstract length distribution in APS collection
To determine the epidemiology and outcome of children with Down syndrome (DS) diagnosed with acute leukaemia in the Nordic countries, data registered in the Nordic Society of Paediatric Haematology and Oncology (NOPHO) population-based leukaemia registry were analysed. Of 3494 children with acute leukaemia diagnosed between July 1984 and December 2001, 136 patients (3.9%) with DS were identifie...
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