多导块方法得到的非线性系统的LD－suitability

Ｓｕｉｔａｂｉｌｉｔｙ是指由隐式龙格库塔法解得的非线性方程组存在唯一解．研究了对于多导块方法的ＬＤ－ｓｕｉｔａｂｉｌｉｔｙ，以前的研究结果成为了特例．     

各种速率矢量和激励线性预测（VSELP）编码器的实现

研究并改进了矢量和激励线性预测，语音编码器，介绍了８ｋｂｉｔ／ｓＶＳＥＬＰ编码方案的实现及在此基础上利用矢量量化ＬＰＣ参数，减少激励码本数和子块分裂等方法；改进的６．４ｋｂｉｔ／ｓ，４．８ｋｂｉｔ／ｓ及２．４ｋｂｉｔ／ｓ ＶＳＥＬＰ的方案和结果。     

无穷级数新的积分判别法

利用有界变差函数的性质,建立了比Cauchy积分判别法更广泛的新的积分判别法;利用实分析中的Lebesgue逐项积分定理,推广了文献[7]中一个数项级数收敛性判别法.     

含参变量的变上限函数的导数公式

给出含参变量的变上限函数的导数公式,指出了该公式在求解常微分方程和偏微分方程等众多领域的广泛运用.     

许辉散文集《又见炊烟》精神还乡内涵解读

许辉的乡土散文集《又见炊烟》将个人记忆作为创作线索,用现代文明的视角去观照乡土,以执着守望者的姿态完成了这次有意味的还乡之旅。在散文集中,他坚持维系着质朴素然的乡土故情、用大爱情怀包裹着纯粹美好的童趣,带着理性的思维探索着心灵归宿,而这些相较于这个纷扰浮躁的社会显得那么的弥足珍贵,同时这份恒久的醇香也浸染着无数人的灵魂。     

Molybdenum isotopic composition as a tracer for low-medium temperature hydrothermal ore-forming systems: A case study on the Dajiangping pyrite deposit,western Guangdong Province,China

Little is known about the range or controls on the molybdenum isotopic composition of low-medium temperature hydrothermal ore-forming systems. We present molybdenum isotope data from 12 hydrothermal syndepositional silicalite and carbonaceous slate samples from the Dajiangping pyrite deposit in western Guangdong Province, South China. The δ ^97/95 Mo values from Orebody III range from −0.02‰ to 0.29‰, with an average of 0.18‰. In contrast, the composition values from Orebody IV display a larger variation from −0.70‰ to 0.62‰. However, the five samples from the main ore bed all show strong negative values. This indicates that the significant variation in molybdenum isotopic composition supports different hydrothermal ore-forming metallogenesis and a metallogenic environment between the two orebodies. Orebody III is likely to have been deposited from submarine exhalative hydrothermal fluids under a relatively strong reducing environment and Orebody IV may have also been influenced by hydrothermal superimposition in a more oxidized disequilibrium condition. In addition, the δ ^97/95 Mo values of Orebody IV are clearly negative, together with the values increasing stratigraphically upward in the ore beds, suggesting that the metallogenic environment of Orebody IV is different from the open oceanic systems. There might be dynamic fractionation in this restricted environment. Therefore, the molybdenum isotope can be used as an effective tracer for the ore-forming fluid and metallogenic environment.     

Genome sequence and analysis of the tuber crop potato

Potato (Solanum tuberosum L.) is the world's most important non-grain food crop and is central to global food security. It is clonally propagated, highly heterozygous, autotetraploid, and suffers acute inbreeding depression. Here we use a homozygous doubled-monoploid potato clone to sequence and assemble 86% of the 844-megabase genome. We predict 39,031 protein-coding genes and present evidence for at least two genome duplication events indicative of a palaeopolyploid origin. As the first genome sequence of an asterid, the potato genome reveals 2,642 genes specific to this large angiosperm clade. We also sequenced a heterozygous diploid clone and show that gene presence/absence variants and other potentially deleterious mutations occur frequently and are a likely cause of inbreeding depression. Gene family expansion, tissue-specific expression and recruitment of genes to new pathways contributed to the evolution of tuber development. The potato genome sequence provides a platform for genetic improvement of this vital crop.     

The Effectiveness of Structural Monetary Policy and Macro-Prudential Policies — Based on the DSGE Model That Includes Bank Heterogeneous Credit

Journal of Systems Science and Complexity - Structural monetary policy and macro-prudential policies are important parts of the policy system of the People’s Bank of China. By constructing a...     

基于改进相关邻域模型的SAR图像RCS重构

提出了一种基于改进相关邻域模型的SAR图像RCS重构滤波器,特别对高分辨率的SAR图像具有很好的去斑效果。本算法虽然是一种RCS重构算法,但是通过采用非线性积累的方法,可明确地把图像划分为阴影、背景和目标区,直接达到SAR图像目标检测的结果。本算法在平滑图像的同时,克服了多视平滑降低图像分辨率的固有缺陷,并且能较好地保持图像的边缘信息,能极大地提高后续SAR图像解释的效率。     

Bell state preparation based on switching between quantum system models

For the preparation of any target Bell state under continuous quantum measurement, this paper proposes a method which achieves the control objective by switching between two different models or by switching between two control channels under one model. Proper control Hamiltonians are selected for the two system models, a switching strategy between the two models is designed, and the stability of the whole switching system is proved in theory. For a given target Bell state, the effectiveness of the proposed switching control strategy between different models is illustrated through simulation experiments.