基于生成对抗网络的超分辨网络在提升图像感知质量等方面获得了重大突破,解决了SR图像中的边缘平滑问题,但依然存在纹理细节缺失、噪点和伪影等问题。在此提出一种含有学习层的自适应激活层MetaAconc与残差网络重构结合,得到一种新的残...基于生成对抗网络的超分辨网络在提升图像感知质量等方面获得了重大突破,解决了SR图像中的边缘平滑问题,但依然存在纹理细节缺失、噪点和伪影等问题。在此提出一种含有学习层的自适应激活层MetaAconc与残差网络重构结合,得到一种新的残差块ResMA。此外感受野块已经在目标检测等方面取得了不错的效果,为了增强特征细节,提出了增强感受野密集残差块(enhanced residual of receptive field dense block,ERRFDB)。将ResMA和ERRFDB进行网络结构重组,提出了一种全新的超分辨率生成器模型(SRRMA-RFB)。在SRGAN网络基础上,将生成器替换为SRRMA-RFB的网络模型称为SRGAN-ARF,为验证其重建图像的视觉效果和评价指标都有所提高,将其与SRGAN和ESRGAN算法进行对比。实验证明,所提算法在提高网络性能并且控制计算量的同时,使重建图像拥有更好的感知质量和纹理细节并且在减轻噪声方面具有一定的优势。展开更多
a Si TFT 是有源矩液晶显示器件的关键元件，为了得到最佳的特性，除了改进用于制造a Si TFT的材料外，a Si TFT的几何结构达到最佳化是非常重要的。显然，a-Si TFT激活层的厚度效应应当被考虑。在本文中，在两个方面研究了a-Si TFT激...a Si TFT 是有源矩液晶显示器件的关键元件，为了得到最佳的特性，除了改进用于制造a Si TFT的材料外，a Si TFT的几何结构达到最佳化是非常重要的。显然，a-Si TFT激活层的厚度效应应当被考虑。在本文中，在两个方面研究了a-Si TFT激活层的厚度效应，即弱场情况和常带宽状态或是费米能级移动密度减小方向的情况。详尽的讨论表明a-Si TFT的关态电流，开态电流以阈值电压等特性不仅与材料特性相关，而且与a-Si TFT结构设计紧密相关。展开更多
Isothermal and isochronal annealing was conducted to study the thermal stability of the nanocrystalline in the surface layer of Mg alloy AZ91D induced by high-energy shot peening(HESP) .Field emission scanning electro...Isothermal and isochronal annealing was conducted to study the thermal stability of the nanocrystalline in the surface layer of Mg alloy AZ91D induced by high-energy shot peening(HESP) .Field emission scanning electron microscope(FESEM) and X-ray diffractometer were used to characterize the microstructure.Results showed that nanocrystalline produced by HESP on the surface layer of the magnesium alloy AZ91D was 60-70 nm on average.The nanocrystalline could remain stable at about 100℃,and grew up slowly between 100℃ and 200℃.When the annealing temperature reached 300℃,the growth rate of the nanocrystalline increased significantly.The kinetic coefficient n of the nanocrystalline growth was calculated to be 2-3 and the grain growth activation energy Q=39.7 kJ/mol,far less than the self-diffusion activation energy of magnesium atoms in the coarse polycrystalline material.展开更多
The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above min...The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above mined-out area, the fault acti- vation effect was divided into the following three periods： the initial activation, the excessive activation and the ultimate activation. Corresponding activation criterion was also deduced by the mechanics theory. Results of engineering example and numerical analysis show that the activation criterion can reflect the activation laws of fault caused by coal mining.展开更多
Fusion technologies and materials researches made progress in the major three aspects in 2006, specially implemented the ITER agreement tasks of first wall （FW） plate fabrication qualification and shield bulk therma...Fusion technologies and materials researches made progress in the major three aspects in 2006, specially implemented the ITER agreement tasks of first wall （FW） plate fabrication qualification and shield bulk thermal-hydraulic analysis and design, studied on low activation fusion structure materials and High Z plasma facing materials, experimentally investigated on liquid metal blanket magneto-hydrodynamics effects and so on.展开更多
To investigate the influence of expansion pretreatment for materials on carbon structure, activated carbons （ACs） were prepared from corncob with/without expansion pretreatment by KOH activation, the structure prope...To investigate the influence of expansion pretreatment for materials on carbon structure, activated carbons （ACs） were prepared from corncob with/without expansion pretreatment by KOH activation, the structure properties of which were determined based on N2 adsorption isotherm at 77 K. The results show that the expansion pretreatment for corncobs is beneficial to the preparation of ACs with high surface area. The specific surface area of the AC derived from corncob with expansion pretreatment （AC-1） is 32.5% larger than that without expansion pretreatment （AC-2）. Furthermore, to probe the potential application of corncob-based ACs in electric double-layer capacitor （EDLC）, the prepared ACs were used as electrode materials to assemble EDLC, and its electrochemical performance was investi- gated. The results indicate that the specific capacitance of AC-I is 276 F/g at 50 mA/g, which increases by 27% com- pared with that of AC-2 （217 F/g）. As electrode materials, AC-1 presents a better electrochemical performance than AC-2, including a higher voltage maintenance ratio and a lower leakage current.展开更多
文摘基于生成对抗网络的超分辨网络在提升图像感知质量等方面获得了重大突破,解决了SR图像中的边缘平滑问题,但依然存在纹理细节缺失、噪点和伪影等问题。在此提出一种含有学习层的自适应激活层MetaAconc与残差网络重构结合,得到一种新的残差块ResMA。此外感受野块已经在目标检测等方面取得了不错的效果,为了增强特征细节,提出了增强感受野密集残差块(enhanced residual of receptive field dense block,ERRFDB)。将ResMA和ERRFDB进行网络结构重组,提出了一种全新的超分辨率生成器模型(SRRMA-RFB)。在SRGAN网络基础上,将生成器替换为SRRMA-RFB的网络模型称为SRGAN-ARF,为验证其重建图像的视觉效果和评价指标都有所提高,将其与SRGAN和ESRGAN算法进行对比。实验证明,所提算法在提高网络性能并且控制计算量的同时,使重建图像拥有更好的感知质量和纹理细节并且在减轻噪声方面具有一定的优势。
文摘a Si TFT 是有源矩液晶显示器件的关键元件，为了得到最佳的特性，除了改进用于制造a Si TFT的材料外，a Si TFT的几何结构达到最佳化是非常重要的。显然，a-Si TFT激活层的厚度效应应当被考虑。在本文中，在两个方面研究了a-Si TFT激活层的厚度效应，即弱场情况和常带宽状态或是费米能级移动密度减小方向的情况。详尽的讨论表明a-Si TFT的关态电流，开态电流以阈值电压等特性不仅与材料特性相关，而且与a-Si TFT结构设计紧密相关。
文摘Isothermal and isochronal annealing was conducted to study the thermal stability of the nanocrystalline in the surface layer of Mg alloy AZ91D induced by high-energy shot peening(HESP) .Field emission scanning electron microscope(FESEM) and X-ray diffractometer were used to characterize the microstructure.Results showed that nanocrystalline produced by HESP on the surface layer of the magnesium alloy AZ91D was 60-70 nm on average.The nanocrystalline could remain stable at about 100℃,and grew up slowly between 100℃ and 200℃.When the annealing temperature reached 300℃,the growth rate of the nanocrystalline increased significantly.The kinetic coefficient n of the nanocrystalline growth was calculated to be 2-3 and the grain growth activation energy Q=39.7 kJ/mol,far less than the self-diffusion activation energy of magnesium atoms in the coarse polycrystalline material.
基金Supported by the National Natural Science Foundation of China （51104063, 51074071） the Scientific Research Fund of Hunan Provincial Education Department （10C0665）+1 种基金 the Open Foundation of Htman Key Laboratory of Safe Mining Techniques of Coal Mines （200904） the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Htman Province
文摘The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above mined-out area, the fault acti- vation effect was divided into the following three periods： the initial activation, the excessive activation and the ultimate activation. Corresponding activation criterion was also deduced by the mechanics theory. Results of engineering example and numerical analysis show that the activation criterion can reflect the activation laws of fault caused by coal mining.
文摘Fusion technologies and materials researches made progress in the major three aspects in 2006, specially implemented the ITER agreement tasks of first wall （FW） plate fabrication qualification and shield bulk thermal-hydraulic analysis and design, studied on low activation fusion structure materials and High Z plasma facing materials, experimentally investigated on liquid metal blanket magneto-hydrodynamics effects and so on.
基金National Natural Science Foundation of China (No. 50902102 and No. 51172160)
文摘To investigate the influence of expansion pretreatment for materials on carbon structure, activated carbons （ACs） were prepared from corncob with/without expansion pretreatment by KOH activation, the structure properties of which were determined based on N2 adsorption isotherm at 77 K. The results show that the expansion pretreatment for corncobs is beneficial to the preparation of ACs with high surface area. The specific surface area of the AC derived from corncob with expansion pretreatment （AC-1） is 32.5% larger than that without expansion pretreatment （AC-2）. Furthermore, to probe the potential application of corncob-based ACs in electric double-layer capacitor （EDLC）, the prepared ACs were used as electrode materials to assemble EDLC, and its electrochemical performance was investi- gated. The results indicate that the specific capacitance of AC-I is 276 F/g at 50 mA/g, which increases by 27% com- pared with that of AC-2 （217 F/g）. As electrode materials, AC-1 presents a better electrochemical performance than AC-2, including a higher voltage maintenance ratio and a lower leakage current.
