《徐州师范大学学报》载文和引证文献作者的空间分布特征

通过对中国知网2007-2011年《徐州师范大学学报（哲学社会科学版）》和《徐州师范大学学报（自然科学版）》的载文和引证文献数据的分析,研究其载文和引证文献作者空间分布特征及其地缘因素．结果表明：在空间因素与非空间因素的共同作用下,学报载文和引证文献作者空间分布具有明显的非均衡性,主要表现为：1）本地高度聚集性分布;2）异速非对称距离衰减,在辐向剖线上表现为先急后缓的空间扩散特征,而在环向节点关联上表现为不对称性．     

《中国图书馆学报》论文作者的Lotka分布统计分析

从《中国图书馆学报》的论文作者数入手,依据Lotka定律,通过估算参数n值,计算常数c及进行K-S检验,对《中国图书馆学报》2007—2011年5年间的论文作者与论文数量之间的关系进行统计分析,以期揭示《中国图书馆学报》论文作者的分布规律。     

高校学报不应对来稿的作者身份设限

近年来一些高校学报对来稿作者的身份设置了限制条件,拒收出自"小单位"、"低职称"作者的论文。对此予以关注和批判,认为这样做有违"双百方针"和学术期刊编辑的职业道德,是与高校学报的发展方向不相符的一种渎职行为。     

图书馆工作必须遵循“以人为本”原则

分析了图书馆工作遵循"以人为本"原则的必要性,从服务读者、依靠馆员、维护作者权益3个方面,阐述了如何做好图书馆工作、发展图书馆事业的问题。     

First-principles investigation of structural and electronic properties of oxygen adsorbing phosphorene

Two-dimensional (2D) phosphorene has been extensively studied for potential electronic and optoelectronic applications.It is easily oxidized by adsorbing oxygen in the air,exhibiting changed materials stability and properties.Yet the impact of oxygen concentrations on stability and electronic properties of oxygen adsorbing phosphorene has never been systematically investigated.In this article,the oxygen adsorbing phosphorene at different oxygen concentrations are studied via first-principles crystal structure searches.We considered stoichiometries of P_8O,P_(16)O_(3)) P_4O and P_8O_(3,)with both single-side and dual-side adsorption for selected case P_4O.The energetically stable structure of each stoichiometry is identified.It has been found that the band gaps show rather wide range change,strongly depending on the oxygen concentration.Interestingly,at the higher oxygen concentration the relatively low band gaps and small carrier effective masses emerge,comparable with the pristine black phosphorus.This may be associated with the appearance of bridged P-O-P bonds as oxygen concentration increasing.The electronic properties are discussed in relation to structural features and chemical bonding.     

《鸡公山木本植物图鉴》增补(Ⅰ)

对《鸡公山木本植物图鉴》进行了增补.报道了10新记录种、7新记录变种、5新记录品种和2新变种.10新记录种是:鸡公松、百里柳、银芽柳、红皮柳、奇叶玉兰、鸡公玉兰、舞纲玉兰、罗田玉兰、朱砂玉兰、伊丽莎白玉兰;7新记录变种是:短叶黄山松、扭叶黄山松、无毛厚朴、毛玉兰、淡紫玉兰、狭被望春玉兰、黑紫玉兰;5新记录品种是:垂枝柳杉、曲叶日本柳杉、钩苞日本柳杉、小裂齿日本柳杉、垂枝日本柳杉;2新变种是:垂枝水杉、长梗水杉.对每个分类单位的形态特征要点和分布进行了记载.     

奥思实用技巧

优选创作平台、精心制作课件是课件开发必备的手段.现今CAI课件的开发平台种类繁多,方正奥思是现今常用CAI课件开发平台之一.结合笔者多年的课件开发实践,谈谈对奥思平台的认识,并给出一些近期应用中的实用技巧及总结.     

论刘勰的作者"才略"批评观

刘勰《文心雕龙·才略》是一篇历代作者通论,是刘勰的作者批评观最集中体现的文学批评篇章。刘勰的作者批评抓住“才略”来确定其批评思路、指导思想、标准和原则,从而确定作者批评以“气”论文、以“才性”论文、以个性论文的指向;同时又拓展“才略”批评的视域,将“才略”放置在社会、历史、时代环境中辨析作者与社会的关系,从而使“才略”作者批评具有方法论、批评学的意义。     

论元小说叙事中"作者出面"的不成立

元小说理论中,有“作者出面”的说法。从叙事学的观点来看,这种说法是不成立的。元小说叙事中的叙事者决不是作者本人,而是作为情节中的人物出现的名为“作者”的叙事者。出面的是叙事者,而不是作者。     

Phase selection during solidification of undercooled Ni70.2Si29.8 eutectic alloy

High undercooling (about 392 K) was achieved in the bulk eutectic Ni_70.2Si_29.8 alloy melt through glass fluxing combined with cyclic superheating. It is found that the metastable phases Ni₃Si₂ and NiSi are obtained through slow post-solidification when undercooling exceeds 240 K. The metastable phases are confirmed by using the method of X-ray diffraction and differential scanning calorimetry (DSC). Based on the principle of the free energy minimum and the transient nucleation theory, the phase selection of melt is investigated with regard to the metastable phases formation in the bulk undercooled eutectic Ni_70.2Si_29.8 melts. The formation of metastable phases from undercooled Ni_70.2Si_29.8 melts is ascribed to competitive nucleation with the undercooling, i.e. high undercooling facilitates the preferential nucleation of metastable phases.