新媒体平台上的中医针灸传播效果:基于微信公众号的研究

中医针灸是我国传统医学中独具特色的疗法之一,历史悠久,文化内涵丰富。为响应互联网时代的蓬勃发展,中医针灸也当与时俱进,借势新媒体平台--微信公众号进行传播而发展。为此,基于微信公众号的研究调查,多方面阐述中医针灸在新媒体平台上的传播效果,望能让更多的人利用和发挥新媒体的传播优势,处理好新媒体的传播弊端。     

直接计算贝努利数的新公式

文中用初等数学方法得到直接计算贝努利数的一个新公式。     

Emergence of morphographical markers in written French: what children following a special education programme say about plurals

Research conducted with average apprentice writers demonstrated that the main difficulty they are facing in the acquisition of written French is the acquisition of the morphology of the writing system, hence studies with slow writers show that morphological traces are late to emerge and often fail to meet the grammatical demands of French. This exploratory research conducted with slow mono- and multilingual learners attempts to identify the qualitative aspects of the emergence of morphological traces, which in the written French system are most often mute. The linguistic concept of the plural was therefore chosen not simply to observe the appearance of plural grammatical markers in productions, but also in order to stimulate apprentice writers to give so-called ‘metagraphical explanations’ in other words, they were asked to explain verbally their own written productions. We observed the written productions and the metagraphical explanations of the participants irrespective of whether these were standard or non-standard written productions. The results show that the verbal explanations, rather than being related to the grammatical case of plural, for the participants frequently refer to their concrete knowledge of number. The fact that these slow learners possess general cognitive abilities which are substantially more developed than their linguistic abilities suggests that the processes used to acquire the linguistic notion of plural in French are based on structures established by analogy, taking their roots in a cognitive notion of number which seems common to all apprentice writers.     

Number line estimation from kindergarten to grade 2: A longitudinal study

A bulk of evidence supports the association of number line estimations using Arabic digits and dots with math learning. Surprisingly few studies have been conducted to explore the relationship between estimations using number words and mathematics. The present study expands previous findings by investigating estimations in three formats (Arabic digits, dots and number), adding language as predictor and by focusing at timed and untimed math learning. A sample of 132 children was followed from kindergarten till grade 2. Results reveal variability in estimation accuracy and errors declining with age and instruction in all children. In addition, our findings suggest that Arabic numerals have a more linear distribution than number words. Moreover, our findings suggest that language explains variation in kindergarten but not in evolution and, more in particular, untimed math achievement can be predicted by number line estimation. Implications for assessment, prediction of math learning and instruction are discussed.     

Acquisition of the cardinal word principle: The role of input

We investigated whether specific input helps 3-1/2-year-olds discover that the last word in a count represents its cardinal value (i.e., the cardinal word principle). In Study 1, we contrasted four training approaches. The only approach to yield significant improvement was to label a set's cardinality and then immediately count it. This training is consistent with previously hypothesized mechanisms based on juxtaposing a set's cardinal label with its count in close temporal contiguity (e.g., 0105 and 0175), as well as general theories of comparison and categorization (e.g., Gentner, 2005). In Study 2, we asked parents to read picture books to their preschool children and found that they rarely provide cardinal labels immediately followed by counting, even when asked to read a book about number.     

高管资源断裂带对企业跨界技术并购创新绩效的影响研究

文章以2007-2018年沪深A股上市公司的跨界技术并购事件为研究样本,采用所对应的2007-2020年的数据,检验了基于资源属性的团队内部分化对跨界技术并购创新绩效的影响效应。研究发现,高管资源断裂带能够促进跨界技术并购创新绩效的提升,并且资源子团队平衡性和数量等相对分布均能够促进资源断裂带对跨界技术并购创新绩效的正向影响。进一步发现,在规模相对较小、股权集中度相对较低、位于传统文化影响较大的地区的企业中,资源断裂带对跨界技术并购的影响作用更强,资源子团队平衡性与数量这两个结构属性的正向调节作用更强。     

Verification

At Vanderbilt University Library attempts to coordinate pre-order and pre-cataloging OCLC searching guidelines were only partially successful until the Verification Unit became part of the Monographic Services (i.e., cataloging) Department. With Verification's reporting to the head of cataloging and with the department head's more immediate awareness of verification procedures, closer coordination between verification and cataloging followed quickly. In two years, production in the LC Copy Catalog Unit increased 104%.     

“‘上古汉语数词定语都在名词中心语之前’说”质疑

石毓智的语法近作《语法化的动因与机制》中有"上古汉语没有量词,数词则都是直接位于动词和名词之前"、少数后置的数词定语"多用于列举几种事物的特殊情况"等语。说上古汉语的数词修饰语都在动词谓语之前,是无可厚非的;但说上古汉语的数词定语都在名词中心语之前、后置的数词定语因多为表"列举"的修辞现象而"特殊",则误解和否认了上古汉语的语法事实。这个误说的成因,或为没有深入调查上古汉语的语料,或为忽略了近年来的相关研究成果,或二者兼而有之。     

基于背包编号遗传算法的多约束背包问题求解

针对多约束背包问题的特点,设计了一种利用物品编号及背包编号的编码方法,并引入虚拟背包的概念,在符号编码的基础上可以避免二进制编码情况下还要尝试物品放入哪个背包更合适的问题,最后用三个实例建立两类遗传算法作仿真实验进行比对,仿真结果证明了新的编码方法的有效性,且采用再生算子的长模式遗传算法效果更好。     

“数形结合”的思想方法的应用总结与培养的体会

数形结合的思想方法是非常重要且应用广泛的数学思想之一。搞好数形结合思想的教学,关键是教学中结合各个知识模块的内容、结合学生的认知结构,循序渐进地渗透这一数学思想,从而提高学生的数学品质,全面提高学生的素养。