Results 111 to 120 of about 8,473 (273)
Warped discrete fourier transform and it's application on image compression
, 2006 52 p.Digital Transforms in Digital Signal Processing play an important role in analysis and design of discrete-time signals and systems. The popular transforms in today's use are Discrete Fourier Transform (DFT), Discrete Cosine Transform (DCT), and ...
Hosahalli Siddaiah Manjunath.
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An analysis of pulsed ultrasonic transmit-receive systems for medical diagnostics
Archives of Acoustics, 2016 This paper presents a method for the calculation of the shape and size of pulses radiated and received by ultrasonic transmitting-receiving systems used in medical diagnostics.
Anna MARKIEWICZ
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Matrix-Vector Based Fast Fourier Transformations on SDR Architectures [PDF]
Advances in Radio Science, 2008 Today Discrete Fourier Transforms (DFTs) are applied in various radio standards based on OFDM (Orthogonal Frequency Division Multiplex). It is important to gain a fast computational speed for the DFT, which is usually achieved by using specialized Fast ...
Y. He +3 more
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Cobalt‐Free Single‐Crystal Cathodes for Next‐Generation Lithium‐Ion Batteries
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Cobalt‐free single‐crystal cathodes enhance lithium‐ion battery stability by mitigating fracture, degradation, and phase transitions. This review highlights Ni‐rich layered, Li‐Mn‐rich, spinel, and olivine frameworks, synthesis strategies enabling morphology and defect control, and structural tuning via doping and coatings, offering pathways toward ...
Srinivasan Alagar +5 more
wiley +1 more source
DISCRETE FOURIER TRANSFORM USING SUMMATION BY PARTS.
, 1987 An algorithm for evaluating the discrete Fourier transform (DFT) at particular output frequency is derived using a technique called summation by parts (SBP).
Parks, T. W., Boudreaux-Bartels, G. F.
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Dynamic Covalent Chemistry Enables Self‐Healing and Compatibilization in Polypropylene Composites
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A high‐performance polypropylene insulation material is created through dynamic covalent crosslinking. It achieves exceptional dielectric properties, autonomous self‐healing, and easy recycling, offering a sustainable solution for future HVDC transmission systems.
Hongzhe Zhang +3 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Enhanced hydrogen species migration enabled by FN/BZY catalyst mitigates intermediate accumulation and improves DA‐PCFC performance during ammonia decomposition. Ammonia, with its high hydrogen density and carbon‐free nature, serves as ideal fuel for direct ammonia protonic ceramic fuel cells (DA‐PCFCs).
Meijuan Fei +9 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Coordinated engineering of the anode, electrolyte, and interface underpins the rational design of next‐generation solid‐state metal‐sulfur batteries. Solid‐state metal‐sulfur batteries are emerging as a transformative energy storage platform with the potential to overcome the fundamental limitations of conventional flooded cells, particularly ...
Ziyu Feng +4 more
wiley +1 more source
, 2016 Informasi yang ditampilkan dalam citra digital lebih banyak dibandingkan dengan dengan data teks. Tetapi citra digital sangat rentan terhadap ancaman, salah satunya pencurian hak cipta.
Nova Sri Wahyuni
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Secure Transmission for TDCS Using 4-WFRFT and Noise Insertion
工程科学与技术, 2016 :In order to guarantee the physical layer security of the transform domain communication system (TDCS)， a security-enhanced scheme based on 4-Weighted-type Fractional Fourier Transform (4-WFRFT) and artificial noise insertion was proposed. Firstly, the 4-
WangShu
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