The Experts below are selected from a list of 127944 Experts worldwide ranked by ideXlab platform
Mario Paolone - One of the best experts on this subject based on the ideXlab platform.
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On the Properties of the Power Systems Nodal Admittance Matrix
IEEE Transactions on Power Systems, 2018Co-Authors: Andreas Martin Kettner, Mario PaoloneAbstract:This letter provides conditions determining the rank of the nodal admittance matrix, and arbitrary block partitions of it, for connected AC power Networks with complex admittances. Furthermore, some implications of these properties concerning Kron reduction and Hybrid Network parameters are outlined.
Steven Nutt - One of the best experts on this subject based on the ideXlab platform.
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Hybrid Network structure and mechanical properties of rodlike silicate cyanate ester nanocomposites
Macromolecules, 2008Co-Authors: Yongzheng Pan, Yuliang Yang, Wei Chen, Steven NuttAbstract:Silicate nanorods (attapulgite, ATT) were organically modified and homogeneously dispersed in a cyanate ester (CE) resin. ATT dispersions and Networks were characterized by rheological and microscopic measurements. Amine groups grafted onto the particle surface catalyzed the cyclotrimerization of the CE monomers and enabled the CE monomers to enter the inter-rod spacing of loose aggregates easily, resulting in homogenization of the particle size distribution in the nanocomposites. The addition of nanorods decreased the density of organic Networks and increased intracyclizations. Covalent bonding at the interface was confirmed by Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMA), which establishes a basis for enhancing/optimizing mechanical properties of CE resins. Nanocomposite modulus, strength, and toughness increased 40, 42, and 55%, respectively, relative to the neat resin, although high nanorod loadings (e.g., 8 wt %) showed negligible benefit. The interplay between...
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Hybrid Network structure and mechanical properties of rodlike silicate cyanate ester nanocomposites
Macromolecules, 2008Co-Authors: Yongzheng Pan, Yuliang Yang, Wei Chen, Steven NuttAbstract:Silicate nanorods (attapulgite, ATT) were organically modified and homogeneously dispersed in a cyanate ester (CE) resin. ATT dispersions and Networks were characterized by rheological and microscopic measurements. Amine groups grafted onto the particle surface catalyzed the cyclotrimerization of the CE monomers and enabled the CE monomers to enter the inter-rod spacing of loose aggregates easily, resulting in homogenization of the particle size distribution in the nanocomposites. The addition of nanorods decreased the density of organic Networks and increased intracyclizations. Covalent bonding at the interface was confirmed by Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMA), which establishes a basis for enhancing/ optimizing mechanical properties of CE resins. Nanocomposite modulus, strength, and toughness increased 40, 42, and 55%, respectively, relative to the neat resin, although high nanorod loadings (e.g., 8 wt %) showed negligible benefit. The interplay between nanorod and resin Networks governed the mechanical properties of the nanocomposites. The curing reaction decreased the size of particle aggregates and thus reduced the percolation threshold of particle Networks. Particle Networks induced the formation of more linear or branching polymer molecular structures, resulting in weaker particle-matrix interactions. These factors reduced the stress transfer efficiency and crack propagation resistance, impairing the extent of reinforcing at high particle loadings.
Andreas Martin Kettner - One of the best experts on this subject based on the ideXlab platform.
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On the Properties of the Power Systems Nodal Admittance Matrix
IEEE Transactions on Power Systems, 2018Co-Authors: Andreas Martin Kettner, Mario PaoloneAbstract:This letter provides conditions determining the rank of the nodal admittance matrix, and arbitrary block partitions of it, for connected AC power Networks with complex admittances. Furthermore, some implications of these properties concerning Kron reduction and Hybrid Network parameters are outlined.
Noorhaniza Wahid - One of the best experts on this subject based on the ideXlab platform.
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a Hybrid Network intrusion detection system using simplified swarm optimization sso
Applied Soft Computing, 2012Co-Authors: Yuk Ying Chung, Noorhaniza WahidAbstract:The Network intrusion detection techniques are important to prevent our systems and Networks from malicious behaviors. However, traditional Network intrusion prevention such as firewalls, user authentication and data encryption have failed to completely protect Networks and systems from the increasing and sophisticated attacks and malwares. In this paper, we propose a new Hybrid intrusion detection system by using intelligent dynamic swarm based rough set (IDS-RS) for feature selection and simplified swarm optimization for intrusion data classification. IDS-RS is proposed to select the most relevant features that can represent the pattern of the Network traffic. In order to improve the performance of SSO classifier, a new weighted local search (WLS) strategy incorporated in SSO is proposed. The purpose of this new local search strategy is to discover the better solution from the neighborhood of the current solution produced by SSO. The performance of the proposed Hybrid system on KDDCup 99 dataset has been evaluated by comparing it with the standard particle swarm optimization (PSO) and two other most popular benchmark classifiers. The testing results showed that the proposed Hybrid system can achieve higher classification accuracy than others with 93.3% and it can be one of the competitive classifier for the intrusion detection system.
Yongzheng Pan - One of the best experts on this subject based on the ideXlab platform.
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Hybrid Network structure and mechanical properties of rodlike silicate cyanate ester nanocomposites
Macromolecules, 2008Co-Authors: Yongzheng Pan, Yuliang Yang, Wei Chen, Steven NuttAbstract:Silicate nanorods (attapulgite, ATT) were organically modified and homogeneously dispersed in a cyanate ester (CE) resin. ATT dispersions and Networks were characterized by rheological and microscopic measurements. Amine groups grafted onto the particle surface catalyzed the cyclotrimerization of the CE monomers and enabled the CE monomers to enter the inter-rod spacing of loose aggregates easily, resulting in homogenization of the particle size distribution in the nanocomposites. The addition of nanorods decreased the density of organic Networks and increased intracyclizations. Covalent bonding at the interface was confirmed by Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMA), which establishes a basis for enhancing/optimizing mechanical properties of CE resins. Nanocomposite modulus, strength, and toughness increased 40, 42, and 55%, respectively, relative to the neat resin, although high nanorod loadings (e.g., 8 wt %) showed negligible benefit. The interplay between...
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Hybrid Network structure and mechanical properties of rodlike silicate cyanate ester nanocomposites
Macromolecules, 2008Co-Authors: Yongzheng Pan, Yuliang Yang, Wei Chen, Steven NuttAbstract:Silicate nanorods (attapulgite, ATT) were organically modified and homogeneously dispersed in a cyanate ester (CE) resin. ATT dispersions and Networks were characterized by rheological and microscopic measurements. Amine groups grafted onto the particle surface catalyzed the cyclotrimerization of the CE monomers and enabled the CE monomers to enter the inter-rod spacing of loose aggregates easily, resulting in homogenization of the particle size distribution in the nanocomposites. The addition of nanorods decreased the density of organic Networks and increased intracyclizations. Covalent bonding at the interface was confirmed by Fourier transform infrared (FTIR) spectroscopy and dynamic mechanical analysis (DMA), which establishes a basis for enhancing/ optimizing mechanical properties of CE resins. Nanocomposite modulus, strength, and toughness increased 40, 42, and 55%, respectively, relative to the neat resin, although high nanorod loadings (e.g., 8 wt %) showed negligible benefit. The interplay between nanorod and resin Networks governed the mechanical properties of the nanocomposites. The curing reaction decreased the size of particle aggregates and thus reduced the percolation threshold of particle Networks. Particle Networks induced the formation of more linear or branching polymer molecular structures, resulting in weaker particle-matrix interactions. These factors reduced the stress transfer efficiency and crack propagation resistance, impairing the extent of reinforcing at high particle loadings.
