应收账款的控制与管理

对赊销业务所发生的应收账款进行日常管理是个很重要的问题,对应收账款事项的日常管理内容进行了简要阐述。     

Expected sample moments of concomitants of selected order statistics

In this paper, the task of determining expected values of sample moments, where the sample members have been selected based on noisy information, is considered. This task is a recurring problem in the theory of evolution strategies. Exact expressions for expected values of sums of products of concomitants of selected order statistics are derived. Then, using Edgeworth and Cornish-Fisher approximations, explicit results that depend on coefficients that can be determined numerically are obtained. While the results are exact only for normal populations, it is shown experimentally that including skewness and kurtosis in the calculations can yield greatly improved results for other distributions.     

治理通货膨胀的宏观调控分析模型

本文以我国通货膨胀的形成机制为依据,分析通货膨胀与宏观调控手段之间的关系,用此关系建成计量经济模型和辨识出模型的参数,并做了解释和检验.     

独立董事连锁对内部控制的影响机理: 基于声誉效应与学习效应的实证研究

本文首次从独立董事连锁的声誉效应和学习效应视角,运用匹配(1:1 Pairing)+双重差分(DID)法研究独立董事连锁对企业内部控制质量的影响机理。研究发现:在声誉效应视角,独立董事连锁能显著提高企业的内部控制质量,且兼任公司家数较多的连锁独立董事对内部控制质量的提高作用更明显;在学习效应视角,独立董事连锁能显著提高其董事会出席率,且该种效应主要出现在高学历的连锁独立董事身上。此外,本研究首次发现了独立董事连锁对企业内部控制质量的传导机制,即通过提高连锁独立董事的董事会出席率进而提升了企业的内部控制质量。本文的结果表明,我国监管部门和上市公司应当重视独立董事连锁的作用,这对公司治理与内部控制相关政策的制定具有重要的启发意义。     

关联理论视角下的隐喻翻译研究——以《抗击新冠肺炎疫情的中国行动》英译为例

借助Pragglejaz团队的“隐喻识别程序”对《抗击新冠肺炎疫情的中国行动》白皮书中的隐喻进行分类描述,从认知关联视角切入对各类隐喻翻译进行案例分析。为实现白皮书类外宣文本国际传播的最佳社会效益,最大语境效果、共同的语境假设以及交际传播的目的是译者在实现隐喻跨语际转换时的重要考量准则。     

数字技术对文化产业内容生产的挑战及其应对策略

数字技术当前深度参与文化产业的内容生产,对创作群体、生产活动、传播形式和消费语境等多方面皆产生重大影响,形成了全新的数字文化产业生态。然而,有些数字文化产品过于强调技术而忽视文化的特殊性,导致出现内容生产粗糙随意、价值判断标准矮化、意识形态风险增加等问题,不能稳定地输出品位高、社会效益佳的文化产品,未来发展面临挑战。对此,数字文化产业的内容生产需要打破“注意力经济”的单一模式、改良人工智能算法的激励与推荐机制、探索文化生产评价标准的自我更新,从而推动新时代数字文化产业的高质量发展。     

知识缺失还是知识自负？知识水平对公众食品安全信心的影响研究

通过对中国10个城市成年受访者的调查,发现公众对当前食品安全问题的感知风险水平较高,反映其对食品安全形势较担忧,且对政府食品安全管理部门存在信任危机。不过公众的感知控制力较高,普遍认为自己有保障自身食品安全的能力,因此在日常的食品消费中仍然有较高的信心。研究证实中国公众在食品安全的知识层面存在着知识自负现象,公众自我评估的主观知识水平显著高于实际拥有的客观知识水平,且真正对公众食品安全信心产生影响的是公众的主观知识水平。这说明传统缺失模型所倡导的以科普、辟谣为主要形式的致力于教育公众、提升公众客观知识水平的行动能够取得的效果可能非常有限;而公众的主观知识水平和感知控制力的提升能有效提振公众的食品安全信心。     

Basic aspects of evolution strategies

Evolution strategies (ESs) are a special class of probabilistic, direct, global optimization methods. They are similar to genetic algorithms but work in continuous spaces and have the additional capability of self-adapting their major strategy parameters. This paper presents the most important features of ESs, namely their self-adaptation, as well as their robustness and potential for parallelization which they share with other evolutionary algorithms.Besides the early (1 + 1)-ES and its underlying theoretical results, the modern ( + )-ES and (, )-ES are presented with special emphasis on the self-adaptation of strategy parameters, a mechanism which enables the algorithm to evolve not only the object variables but also the characteristics of the probability distributions of normally distributed mutations. The self-adaptation property of the algorithm is also illustrated by an experimental example.The robustness of ESs is demonstrated for noisy fitness evaluations and by its application to discrete optimization problems, namely the travelling salesman problem (TSP).Finally, the paper concludes by summarizing existing work and general possibilities regarding the parallelization of evolution strategies and evolutionary algorithms in general.     

What's wrong with sociology? Its public image

In response to editor Stephen Cole's question—"What's wrong with sociology?"—the answer is nothing that cannot be overcome by clearer communications and better public relations. The problem is that the field is not held in high esteem by college administrators, legislators, and the public. Many see us as rebels of the 1960s, political liberals, and impractical thinkers with a penchant for jargon. Even our research is derided by some as a waste of money. The solution consists of strategies for overcoming our poor public image. Seven strategies for doing so are discussed: (1) Write clearly. (2) Write for a mass audience. (3) Seek board positions. (4) Strengthen our identity. (5) Teach sociology in high school. (6) Develop academic partnerships. (7) Emphasize outcomes: increase in tolerance and research skills.     

利用数控增益放大器提高A/D转换器的分辨率

文章介绍利用数控增益放大器LH0086大幅度提高A／D转换器分辨率的方法,可将8位A／D转换器的分辨率提高到接近16位A／D的水平,适用于高速数据系采集系统,给出了相应的硬件原理图和软件框图。