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基于高效通道注意力机制的龙格库塔去雨网络 被引量:2
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作者 袁祎铭 韩婷婷 +1 位作者 丁佳骏 齐炳森 《计算机应用》 CSCD 北大核心 2022年第S01期305-309,共5页
单图去雨问题是图像处理的一个重要研究方向。为了解决现有方法对雨痕特征提取不够充分的问题,提出一种基于注意力机制的龙格库塔(RK)模块的去雨网络。该模块采用RK模块提高提取图像特征的能力并采用高效通道注意力(ECA)机制加强对雨痕... 单图去雨问题是图像处理的一个重要研究方向。为了解决现有方法对雨痕特征提取不够充分的问题,提出一种基于注意力机制的龙格库塔(RK)模块的去雨网络。该模块采用RK模块提高提取图像特征的能力并采用高效通道注意力(ECA)机制加强对雨痕局部表征的关注。通过堆叠多个基于ECA机制的RK模块,可以构建深度去雨模型,较好地特提取雨痕特征;同时采用全局回传机制,利用雨痕的高阶特征以更新其低阶特征,提高雨痕表征的提取质量,逐步提升重建背景图的质量。基于公开数据集Rain100L、Rain100H和RainHeavy的测试结果表明,所提算法能够较好地重构雨天背景图。采用峰值信噪比(PNSR)和结构相似度(SSIM)两个常用指标评估重建背景图像结果,并与去雨算法Semi-Supervised transfer learning for Image rain Removal(SSIR)、Progressive Recurrent Network(PReNet)、Bilateral Recurrent Network(BRN)进行比较,结果显示所提算法的性能最优。 展开更多
关键词 单图去雨 深度学习 龙格库塔模块 高效通道注意力 回传机制
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基于影片解码卡的数字电影信息回传体系 被引量:1
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作者 黄昭婷 刘翼光 +1 位作者 徐宏 高强 《现代电影技术》 2009年第1期18-22,26,共6页
本文提出了基于影片解码卡(智能卡)的数字电影信息回传体系,并着重从影片解码卡COS优化和回传安全机制设计两个方面对信息回传体系进行了阐述。影片解码卡COS优化技术为影片解码卡完整记录回传信息提供了足够的用户空间。回传安全机制... 本文提出了基于影片解码卡(智能卡)的数字电影信息回传体系,并着重从影片解码卡COS优化和回传安全机制设计两个方面对信息回传体系进行了阐述。影片解码卡COS优化技术为影片解码卡完整记录回传信息提供了足够的用户空间。回传安全机制可以抗重放、假冒服务器、伪造传输数据和篡改传输数据等攻击,消除了信息回传出错、回传信息被篡改、伪造、窃取等安全隐患。测试结果和实际运行情况表明,本文提出的数字电影信息回传体系的安全性能符合实际使用的要求。 展开更多
关键词 数字电影信息回传 影片解码卡(智能卡) 回传安全机制
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Structural Vector Autoregressive Analysis of Monetary Policy in Thailand
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作者 Popkarn Arwatchanakarn 《Sociology Study》 2017年第3期133-145,共13页
This paper highlights the importance of monetary policy transmission mechanism in Thailand since the 1997 financial crisis and then undertakes an empirical investigation of Thailand monetary policy. This study makes e... This paper highlights the importance of monetary policy transmission mechanism in Thailand since the 1997 financial crisis and then undertakes an empirical investigation of Thailand monetary policy. This study makes effort to address both two aspects of monetary transmission mechanism, namely channels of monetary policy and the effect of monetary policy shocks on key macroeconomic variables. To address these issues, the paper specifies structural vector autoregressive (SVAR) models and estimates them using quarterly data from 1997q3 to 2014q4. The identification schemes used in this paper follow Kim and Roubini and Raghavan, Silvapulle, and Athanasopoulos with some modifications. The overall result is that the identifying restrictions used in the SVAR seem to appropriately identify a monetary policy shock even though the exchange rate puzzle is found. The results show that interest rate and monetary aggregate have played the dominant channels of monetary transmission mechanism in Thailand, while an exchange rate channel is decreasingly significant. In addition, Thailand economy is somewhat exposed to the foreign sector especially for the world price of oil and the U.S. monetary policy. The results also reveal the linkage and influence of U.S. monetary policy on Thailand monetary policy. The empirical findings are then used to provide Bank of Thailand (BOT) with insight into identifying the important monetary policy transmission channels. It would help the BOT to implement an effective monetary policy for achieving price stability through the appropriate monetary channels. 展开更多
关键词 Monetary policy monetary transmission mechanism SVAR model Thailand
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Transmission Mechanisms of Monetary Policy in Saudi Arabia: Evidence From SVAR Analysis
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作者 Sayyed Mahdi Ziaei 《Journal of Modern Accounting and Auditing》 2012年第7期990-1012,共23页
In this research, the authors evaluate different channels of the monetary policy transmission mechanisms in Saudi Arabia over the last 15 years with a baseline of structural vector autoregressive (SVAR) models. Cont... In this research, the authors evaluate different channels of the monetary policy transmission mechanisms in Saudi Arabia over the last 15 years with a baseline of structural vector autoregressive (SVAR) models. Contemporaneous coefficient in the structural model indicates that while Saudi Arabia pegs its currency to US dollar, monetary policy instrument reacts positively to unexpected changes in the monetary aggregate. In addition to the traditional interest rate channel, the authors have also found the effects of credit channel. Moreover, variance decomposition results show that past shocks of credit, nominal effective exchange rate (NEER), federal funds rate (FFR) and treasury bill (TB) are found to be important for credit growth in shorter and longer horizons. The exchange rate channel has been less significant in comparison to other channels. 展开更多
关键词 monetary policy TRANSMISSION MECHANISM
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