نتایج جستجو برای: cma
تعداد نتایج: 2518 فیلتر نتایج به سال:
Psychomotor disturbances are a classic feature of major depressive disorders. These can manifest as lack of facial expressions and decreased speech production, reduced body posture and mobility, and slowed voluntary movement. The neural correlates of psychomotor disturbances in depression are poorly understood but it has been suggested that outputs from the cingulate motor area (CMA) to striata...
Firstly, chitin was modified via ring-opening reaction with maleic anhydride in lithium chloride/ N,N-dimethylacetamide. Then, both chitin and chitin modified with maleic anhydride (CMA) were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) method, ultraviolet-visible (UV-Vis) spectroscopy, and scanning electron microscopy (SEM). Thermogravimetric analysi...
This paper presents an efficient meta-heuristic algorithm based on electromagnetism-like method, which has been successfully implemented in multiuser detection problems. The contribution revisits blind multiuser detection for multicarrier code division multiple access systems using a novel combined adaptive step-size constant modulus algorithm (CMA) and electromagnetism-like method scheme. To w...
In this paper, we propose an efficient approximated rank one update for covariance matrix adaptation evolution strategy (CMA-ES). It makes use of two evolution paths as simple as that of CMA-ES, while avoiding the computational matrix decomposition. We analyze the algorithms’ properties and behaviors. We experimentally study the proposed algorithm’s performances. It generally outperforms or per...
This paper considers a cooperative multiple access (CMA) scheme where two full-duplex sources simultaneously send their own messages to common destination. As part of cooperation, each the also receives and relays message from other source. develops algorithms for computing optimal power allocation achieve maximal network throughput subject residual self-interference (RSI) at non-ideal sources....
During the last decade, an adaptive antenna has considerable received the interest for mobile communication systems. This is because it can increase the system capacity by reducing interference. To achieve the interference reduction, an adaptive algorithm is necessary. There are a number of the adaptive algorithms proposed to improve the signal-to-interference plus noise ratio (SINR) in such th...
Multimedia authoring involves specifying the temporal characteristics of the media. In this paper collaborative multimedia authoring (CMA) is advocated and its usage scenarios are described. A system model is presented to address CMA from various levels. The major issues regarding consistency maintenance and temporal characteristics of CMA are identified. An approach using operational transform...
By using a generalized cost function, a modified constant modulus algorithm (CMA) that allows polarization demultiplexing and equalization of polarization-switched QPSK is found. An implementation that allows easy switching between the conventional and the modified CMA is described. Using numerical simulations, the suggested algorithm is shown to have similar performance for polarization-switch...
BACKGROUND Multiple lines of evidence indicate a strong genetic contribution to autism spectrum disorders (ASDs). Current guidelines for clinical genetic testing recommend a G-banded karyotype to detect chromosomal abnormalities and fragile X DNA testing, but guidelines for chromosomal microarray analysis have not been established. PATIENTS AND METHODS A cohort of 933 patients received clinic...
This paper addresses computer-mediated advertising (CMA) as a source of brand image. It is proposed that CMA contributes to brand image by facilitating unique consumer-brand relationships. The 'quality' of these relationships largely depend on how advertisers leverage interactivity and computer intelligence during interaction. An analogy is drawn between CMA and service encounters and a framewo...
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