论网络传播技术与社会变革

随着互联网技术的发展,媒介融合成为新闻传播业的一个重要发展趋势。文章探讨了互联网技术的发展给新闻传播业和社会运作机制带来的深刻影响,梳理了数字化时代的新闻采编方式的变化和公共协商机制的变迁,深刻反思了技术决定论的思维模式,指出公信力才是众声喧哗生态下的生存逻辑,并对日益严重的数字鸿沟提出了质疑。     

莎士比亚十四行诗第116首的结构分析

对莎翁十四行诗第116首的解读历来各有侧重,但几乎都以3节1对句的莎翁诗体为解读框架.如果以诗句中主语变化及否定肯定语气变换为依据对诗节进行拆分重构,则作者的情感流动脉络及诗作所展现的画面都昭然可见.     

固态自旋在自旋热库与光场作用下的动力学演化

考虑一个简化的固态自旋和微腔耦合体系,在这个模型当中,假设固态自旋在强磁场下,与自旋热库之间的相互作用是依辛耦合。针对这个简化模型,获得了单个固态自旋状态演化的密度矩阵的解析表达式。     

M-learning网络学习平台在网络传播人才培养中的应用研究——以《新闻学概论》网络课程为例

从系统拓扑结构、系统功能结构模块及平台运行效果三个方面详细介绍了《新闻学概述》移动学习平台情况,并对平台的使用情况、满意程度及对提高成绩的作用方面做了相关调查,从而对学习平台进行了客观评价。     

The global significance of biodiversity science in China: an overview

Biodiversity science in China has seen rapid growth over recent decades, ranging from baseline biodiversity studies to understanding the processes behind evolution across dynamic regions such as the Qinghai-Tibetan Plateau. We review research, including species catalogues; biodiversity monitoring; the origins, distributions, maintenance and threats to biodiversity; biodiversity-related ecosystem function and services; and species and ecosystems’ responses to global change. Next, we identify priority topics and offer suggestions and priorities for future biodiversity research in China. These priorities include (i) the ecology and biogeography of the Qinghai-Tibetan Plateau and surrounding mountains, and that of subtropical and tropical forests across China; (ii) marine and inland aquatic biodiversity; and (iii) effective conservation and management to identify and maintain synergies between biodiversity and socio-economic development to fulfil China''s vision for becoming an ecological civilization. In addition, we propose three future strategies: (i) translate advanced biodiversity science into practice for biodiversity conservation; (ii) strengthen capacity building and application of advanced technologies, including high-throughput sequencing, genomics and remote sensing; and (iii) strengthen and expand international collaborations. Based on the recent rapid progress of biodiversity research, China is well positioned to become a global leader in biodiversity research in the near future.     

教育公平的文化制约

教育公平问题一直是社会关注的热点,但它只能是一种无限接近的过程,永远不可能完全实现。因为它受到多方面的制约,只要这些制约因素不消失,教育公平就是相对的。其中文化影响就是这样一个因素。本文主要从地域文化、阶层文化、民族文化和传统文化四个方面分析文化因素对教育公平的制约。     

科技期刊广告的经营策略

从4个方面阐述科技期刊的广告经营策略:做好期刊的定位;通过提高期刊质量,加强宣传,从而提高期刊的发行量;严格广告审查,提高广告的可信度;制定合理的价格规定、通过计算机辅助管理等,提高服务质量和工作效率.     

Co-La改性Ti基板阳极电催化降解废水甲基橙

采用Co-La二元氧化物为活性涂层自制Ti基涂层电极,通过电催化降解模拟废水中的甲基橙分别考察电解质质量浓度、初始溶液pH、电压等不同因素对废水中甲基橙去除率的影响,并分析其原因。     

Impulsive control for passivity and exponential synchronization of coupled neural networks with multiple weights

This paper investigates the passivity and synchronization problems for two classes of multiple weighted coupled neural networks (MWCNNs) with or without time delays. Firstly, by utilizing an impulsive control strategy and some inequality techniques, several passivity criteria for MWCNNs with diverse dimensions of output and input are established. Then, based on the Lyapunov functional, some sufficient conditions to ensure the synchronization of MWCNNs via impulsive control are derived. In addition, combined with the comparison principle and the impulsive delay differential inequality, the global exponential synchronization of MWCNNs with time-varying delays is considered under impulsive control. Finally, two numerical examples illustrate the effectiveness of the obtained results.     

Stochastic input-to-state stability of random impulsive nonlinear systems

In this paper, the stochastic input-to-state stability is investigated for random impulsive nonlinear systems, in which impulses happen at random moments. Employing Lyapunov-based approach, sufficient conditions for the stochastic input-to-state stability are established based on the connection between the properties of system and impulsive intervals. Two classes of impulsive systems are considered: (1) the systems with single jump map; (2) the systems with multiple jump maps. Finally, some examples are provided to illustrate the effectiveness of the proposed results.