基于旋转块的BM3D图像去噪改进算法

针对经典BM3D去噪算法中存在的相似块匹配误差较大及对图像细节保护不足的问题,提出了一种基于旋转块的BM3D图像去噪改进算法.新算法首先对参考块进行不同角度的旋转获取旋转块,通过旋转块进行相似块匹配过程;然后使用低秩正则化来代替传统算法中的硬阈值滤波;最后,对结合旋转块匹配与低秩正则化的BM3D算法进行自适应调整,从而...     

基于记忆和预测机制的自适应矢量量化及其在图像压缩编码中的应用

本文提出了一种用于图像压缩的低比特率自适应矢量量化技术，该方法有以下三个特色：１）引入了有效的记忆预测机制，使量化器和编码器有很好的自适应性。２）采用二次寻址方法对矢量的地址进行编码，大大提高了编码效率；３）算法运算复杂度低，便于ＶＬＳＩ实现。     

Evolution of intelligent control in adaptive systems

The evolution of adaptive control systems is considered from the viewpoint of the use of informatics and artificial intelligence (AI) tools. Some general principles of intellectronics (AI tools) are discussed taking into consideration adaptive control systems with non-linear dynamics operating under conditions of uncertainty. The principles are illustrated by an analytical review of adaptive-intelligent robot control and logical-probabilistic decision rules as applied to expert systems of adaptive control. Example of the use of intellectronics in adaptive systems are given.     

楼盘命名的顺应论阐释

Verschueren的顺应论给楼盘命名提供解释。语境关系顺应要求：第一,楼盘命名因时而动,并在名称中凸显其地理位置,实现时空因素的物质世界顺应;第二,楼名体现客户优越地位,实现社交世界顺应;第三,考虑购房者的心理状态,做到心理世界顺应。语言结构顺应要求：音节上,顺应语言结构要求,多采用“2＋2”音步;修辞上,使用一定的修辞手段。     

Case-Based Reasoning adaptation of numerical representations of human organs by interpolation

Case-Based Reasoning (CBR) and interpolation tools can provide solutions to unknown problems by adapting solutions from other problems already solved. We propose a generic approach using an interpolation tool during the CBR-adaptation phase. The application EquiVox, which attempts to design three dimensional representations of human organs according to external measurements, was modelled. It follows the CBR-cycle with its adaptation tool based on Artificial Neural Networks and its performances are evaluated and discussed. The results show that this adaptation tool meets the requirements of radiation protection experts who use such prototypes and also what the limits are of such tools in CBR-adaptation. When adaptations are guided by experience grained through trial and error by experts, interpolation tools become well-suited methods for automatically and quickly providing adaptation strategies and knowledge through training phases.     

Synthesis and perception of breathy,normal, and Lombard speech in the presence of noise

This papers studies the synthesis of speech over a wide vocal effort continuum and its perception in the presence of noise. Three types of speech are recorded and studied along the continuum: breathy, normal, and Lombard speech. Corresponding synthetic voices are created by training and adapting the statistical parametric speech synthesis system GlottHMM. Natural and synthetic speech along the continuum is assessed in listening tests that evaluate the intelligibility, quality, and suitability of speech in three different realistic multichannel noise conditions: silence, moderate street noise, and extreme street noise. The evaluation results show that the synthesized voices with varying vocal effort are rated similarly to their natural counterparts both in terms of intelligibility and suitability.     

广州市南沙区农业区域 海平面上升应对策略

It envinces that sea level rise aggravates low-lying terrain inundation, storm surges, beach erosion, and other ecological damages. The developed agricultural system in the Pearl River Delta is at a high risk to floods; and, in light of the tactical significance of the Guangdong-Hong Kong-Macao Greater Bay Area and its high vulnerability to sea level rise and storm surges, it urgently requires to study their impacts on the agricultural areas in this region. Taking Nansha District, Guangzhou City, Guangdong Province, China as the study area, this study builds a vulnerability evaluation model of agricultural areas with the Source-Pathway-Receptor-Consequence framework using an indicator system upon exposure, sensibility, and adaptation, and quantitatively predicts the inundation risk level, financial loss, and vulnerability patterns of varied scenarios of sea level rise superimposed with storm surges with the ArcGIS. The main findings include 1) the stimulated proportion of inundated areas in minimum-risk and maximum-risk scenarios is 73.38% and 87.96% respectively, and the estimated financial loss in both scenarios is RMB 3,897.3855 million and 7,140.4979 million, respectively; 2) the central Nansha will suffer from a higher inundation risk, and the northern and southern agriculatural parts within the study area have a higher vulnerability to flood disasters. Resilience strategies—through defense, adaptation, or relocation—for each vulnerable zone are then proposed accordingly.     

Adaptation of Acidithiobacillus ferrooxidans to high grade sphalerite concentrate

In this study different strategies were employed for adapting Acidithiobacillus ferrooxidans cells to both Zn²⁺ ions and high grade sphalerite concentrate. The serial subculturing was found to be a very efficient strategy for adapting A. ferrooxidans cells to higher Zn²⁺ concentrations, as well as high grade sphalerite concentrate, provided that a suitable protocol was employed. Adaptation of A. ferrooxidans cells to 30 g/L Zn²⁺ significantly enhanced the rate of bioleaching of Zn²⁺ from high grade sphalerite concentrate. Preadaptation to Zn²⁺ ion also shortened the time required to adapt the cells to the concentrate. A. ferrooxidans PTCC 1642, exhibited a higher rate of Zn²⁺ bioleaching from high grade sphalerite concentrate compared to A. ferrooxidans DSMZ 583; however, due to the adaptation protocol employed the difference in performance of the two strains was not very great. Based on the results obtained in this study suggestions were given for the mechanisms during the adaptation of A. ferrooxidans cells to high grade sphalerite concentrate.     

基于构件的软件开发的方法与实践

随着软件工业的成熟以及对软件生产要求的不断提高,基于构件的软件开发作为一种新的软件开发方法被提了出来.该方法的开展通过集成已存在的构件进行,可以分为构件的评选、构件适配、构件组装、系统演化四个阶段.使用基于构件的软件开发能减少软件开发费用、提高软件开发速度等,但同时也可能带来一定的风险,因此,开发者在开发时应该遵循一定的原则,这些原则是在用该方法开发软件时总结出来的.