نتایج جستجو برای: ترکیبات پیچیده فلزی cma
تعداد نتایج: 46344 فیلتر نتایج به سال:
This study used an online concept mapping activity (CMA) featuring peer learning to enhance learning achievement in concept application. Ninety-seven graduate students participated in this study. The students who participated in the online CMA could later apply the concepts with significantly higher performance and greater fidelity than those who did not. Findings of this study advance CMA for ...
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...
هدف از این پژوهش تولید کامپوزیت آلومیناید آهن– کاربید تیتانیوم به روش سنتز احتراقی با استفاده از پودرهای فروتیتانیوم، گرافیت وآلومینیوم بوده است. ضمن مشخصه یابی محصولات تولیدی و اثر عوامل اجرایی بر آن، مسیر انجام واکنش سنتز احتراقی به دو روش کوئنچ جبهه احتراق و آنالیز حرارتی انجام گرفت. مشخصه یابی پودر کامپوزیت توسط آنالیز پراش پرتو ایکس (xrd) و میکروسکوپ الکترونی روبشی (sem) انجام شد. نتایج بر...
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...
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