Analysis on Chinese/English Code-Switching in Computer-Mediated Communication Based on Meme Theory

Nowadays,computer-mediated communication(CMC) becomes one of the most convenient ways for people to connect with each other in which Chinese/English code-switching has been frequently used and widely spread.The article will memeticly interpret this language phenomenon based on the authentic examples collected from various kinds of CMC,and point out that the Chinese/English code-switching in CMC is a kind of strong memeplex which includes many different strong memes,resulting in the popularity of Chinese/English code-switching in CMC.     

次强Hermiter矩阵及其性质

在次Hermiter矩阵定义的基础上给出了次强Hermiter矩阵的概念,利用次Hermiter矩阵的研究方法及性质,推出了次强Hermiter矩阵的一些性质．     

一个新的两点梯度法

构造一个新的解无约束优化问题的两点梯度法,类似共轭梯度法,在构造搜索方向时,充分利用上次迭代点的信息·采用强Powell-Wolf搜索准则产生步长,在较弱条件下,算法总体收敛,并且至少线性收敛·数值实验表明,在计算量和结果精度方面明显优于最速下降法·     

“九五““十五“期间江苏省成人高等教育数据分析与思考

对“九五”以来江苏省成人高等教育毕业生注册数据的统计与分析结果表明,十年间江苏省成人高等教育总体规模呈上升趋势,其中本科生所占比例持续上升,专科生比例下降;毕业生均龄亦呈上升态势;普通高校成教毕业生数量增长较快,本科成教增速尤为突出。“十五”期间成教没有出现低龄化现象,年龄段分布呈均衡化趋势。在江苏建设“教育强省”进程中,成人高等教育必须加强,特别要重视加快独立设置成人高等学校的发展。     

学生管理工作的"知"与"行"

本文就学生管理工作的具体反差展开论述,提出了在学生管理工作中不仅要知道其重要性,更应该在实际工作中落实到行动中,做到"知"与"行"统一.     

广义线性模型极大似然估计弱相合性的数值模拟

广义线性模型是经典线性模型的自然推广,它是一类应用广泛的统计模型.选择Probit模型,利用matlab编程,通过数值模拟的方法验证了广义线性模型的极大似然估计的弱相合性.     

极小强连通有向图顶点指数为4的顶点性质

通过证明得到了极小强连通有向图顶点指数为4的顶点性质：（1）过顶点指数为4的顶点必有长为3的圈;（2）顶点指数为4的顶点的出度不小于2;（3）长为3的圈上至少有一个顶点的指数不为4。     

The Teacher Behavior Inventory: validation of teacher behavior in an interactive lecture environment

Students’ rating of teacher behaviors provides valuable information on teaching improvement and instructional quality. Unfortunately, there is a lack of new validated instruments for measuring teacher behaviors. The Teacher Behaviors Inventory is an old inventory that was initially developed to measure teaching behaviors as regards lecture-based instructions, which is effected through the use of low-inference items. The aim of this study was to assess its continued suitability in the present educational setting by examining its construct validity and internal consistency through the lens of one lecturer’s teaching behaviors, as rated by 527 students after six interactive lectures. The variables evaluated, as mentioned above, were achieved after an items removal process, which resulted in a 32-item version. Apart from being valid and reliable, this condensed version allows for immediate assessment of teaching behaviors after an instruction session as the rating procedure is now more straightforward and less time-consuming, and also enables a reduction in rating errors. Therefore, the 32-item format serves as a practical diagnostic feedback tool in the present educational arena, permitting a longitudinal teaching behavior assessment to enhance teachers’ professional development.     

有限个幺半群的强半格的平移壳

设半群A是有限个幺半群{Ae}的强半格,所有幺元e的集合为I（A）．为I（A）定义一种序关系,使I（A）成为带偏序关系的半群．利用这个偏序半群构造出一个新的半群B,然后证明B和A的平移壳同构,从而揭示了A的平移壳的结构．     

Superconductivity in chromium nitrides Pr3Cr10-xN11 with strong electron correlations

Exploration of superconductivity in Cr-based compounds has attracted considerable interest because only a few Cr-based superconductors (CrAs, A₂Cr₃As₃ and ACr₃As₃ (A = K, Rb, Cs, Na)) have been discovered so far and they show an unconventional pairing mechanism. We report the discovery of bulk superconductivity at 5.25 K in chromium nitride in Pr₃Cr_10-xN₁₁ with a cubic lattice structure. A relatively large upper critical field of H_c2(0) ∼ 12.6 T is determined, which is larger than the estimated Pauli-paramagnetic pair-breaking magnetic field. The material has a large electronic specific-heat coefficient of 170 mJ K⁻² mol⁻¹—about 10 times larger than that estimated by the electronic structure calculation, which suggests that correlations between 3d electrons are very strong in Pr₃Cr_10-xN₁₁, and thus quantum fluctuations might be involved. Electronic structure calculations show that the density of states at the Fermi energy are contributed predominantly by Cr 3d electrons, implying that the superconductivity results mainly from the condensation of Cr 3d electrons. Pr₃Cr_10-xN₁₁ represents a rare example of possible unconventional superconductivity emerging in a 3D system with strong electron correlations. Nevertheless, clarification of the specific pairing symmetry needs more investigation.