谈中日文中字序的逆转现象

中日文中存在着许多字序逆转的现象。要准确的理解和翻译 ,就必须对其进行深入的研究 ,掌握其内在规律。中日文中存在的字序逆转现象不是随意产生的 ,经历了历史的变迁。中日文中字序的逆转现象是两国文化长期交流的结果。     

Curved Chaotic Map Time Series Models and Their Stochastic Reversals

This paper considers two types of chaotic map time series models, including the well-known tent, logistic and binary-shift maps as special cases; these are called curved tent and curved binary families. Deterministic behaviour is investigated by invariant distributions, Lyapunov exponents, and by serial dependency. Stochastic time reversal of the families is shown to produce models which have a broader range of stochastic and chaotic properties than their deterministic counterparts. The marginal distributions may have concentrations and restricted supports and are shown to be a non-standard class of invariant distribution. Dependenc y is generally weaker with the reversed stochastic models. The work gives a broad statistical account of deterministic and stochastically reversed map models, such as are emerging in random number generation, communica tion systems and cryptography     

从解释世界到改变世界--马克思对黑格尔哲学的"颠倒"

马克思哲学是对传统哲学特别是黑格尔哲学的“颠倒”,主要体现在:对思想把握世界方式的颠倒、对“从天国降到人间”的颠倒、对理论和实践关系的颠倒。这些颠倒从根本上说是从解释世界的逻辑到改变世界的逻辑,这也正是马克思哲学所实现的哲学变革。     

我国人口老龄化的城乡差异及影响因素分析

人口的乡—城转移导致了老龄化城乡倒置现象,人口的单向跨区域流动也造成了我国大范围的地区年龄结构失衡,对我国的经济社会可持续发展造成威胁。基于2010—2019年大陆31个省市的面板数据,以人口老龄化系数为被解释变量,分别构建固定效应和随机效应模型,从人口、经济、社会三个方面研究我国城镇、农村人口老龄化和城乡倒置现象的影响因素以及三类因素在东、中、西部地区的不同表现。结果显示,人口因素是老龄化城乡差异的直接原因,经济因素是根本原因,教育、医疗、社会保障等社会因素在城乡、区域之间影响不一。为此,政府应当增强生育支持力度以提高生育率,推动城乡一体化发展,推动农村地区的养老服务建设,并鼓励区域的联动合作,以缓解老龄化集聚地区的人口压力。     

英汉情态助动词语法及语义表达方式的对比

情态助动词是表达情态的重要手段,英语和汉语情态助动词有不同的语法和语义表达形式。根据Huddleston和Palmer关于情态助动词的理论框架,英语和汉语情态助动词被同时纳入否定、倒装、替代和强调四个语法特征进行对比,发现汉语在倒装方面与英语有很大差异,但是在其他三个特点上,均与英语具有共性。然后又将它们纳入意愿、可能和必须三个语义范畴,结合相应的语料对比、分析,发现它们的意义表达形式在三个语义范畴中表现有共性和个性。     

应用同伦正则化算法反演二维溶质运移模型中的弥散系数

利用同伦正则化算法探讨了二维对流弥散方程的依赖空间变量的弥散系数反演问题.讨论了初始迭代值、数值微分步长、以及收敛精度对算法实现的影响.数值模拟表明,同伦正则化算法对于此类参数反演问题是一种有效的方法.     

复杂岩性地区岩性识别与储层预测

中国陆相地层岩性成分较为复杂,岩性波阻抗值常呈多极分布。水动能强度的急剧变化、高频率的水进水退等沉积背景造成了薄互层广泛发育的特点。储层间干涉现象普遍存在,直接影响到地震岩性解释的精度。针对复杂岩性地区岩性–波阻抗关系复杂的特点,系统分析了造成传统地震储层预测方法解释误差的原因。根据复杂岩性的地球物理响应特点,选取对区分复杂岩性敏感的测井参数。同时,将90° 相位化地震数据作为测井参数反演的相对波阻抗约束数据体。研究结果表明,该方法对复杂岩性进行了有效的区分,达到了精细描述复杂岩性地区储层空间发育及平面展布特点的目的。     

Serial unblocked designs balanced for correlation between neighbours,II

The theory in Part I contained an error that was inferred from the output of a program, written in SAS by Eric P. Smith and David D. Morris. The program produces random BUS designs in accordance with the algorithm of Part I. The theory is here corrected by using a combinatorial argument that involves elementary number theory. The algorithm needs no change but its interpretation is now adjusted.     

Probabilistic Inversion in Priority Setting of Emerging Zoonoses

This article presents methodology of applying probabilistic inversion in combination with expert judgment in priority setting problem. Experts rank scenarios according to severity. A linear multi‐criteria analysis model underlying the expert preferences is posited. Using probabilistic inversion, a distribution over attribute weights is found that optimally reproduces the expert rankings. This model is validated in three ways. First, consistency of expert rankings is checked, second, a complete model fitted using all expert data is found to adequately reproduce observed expert rankings, and third, the model is fitted to subsets of the expert data and used to predict rankings in out‐of‐sample expert data.     

城市大气中污染物扩散的施密特数研究

借助反问题方法对风洞实验工况选取不同施密特数进行数值模拟试验,分析比较了不同施密特数时街道峡谷内各个观测点的数值模拟数据和风洞实验数据.研究结果表明,城市街道内大气污染物扩散的施密特数为0.7～0.8.