晶格振动和晶粒尺度对磁记录膜矫顽力的竞争影响研究)

对晶格自旋相互作用的交换积分进行了晶格振动的修正,依此修正,导出了振动对磁记录膜矫顽力的影响关系;分析了磁晶量子尺度效应对磁记录膜矫顽力的影响机制;讨论了振动效应和量子尺度效应相互影响,共同竞争的物理内涵.结果显示:①振动的存在将减小薄膜的矫顽力;②磁晶微粒的量子尺度效应将使薄膜的矫顽力增加;③振动效应和量子尺度效应相互影响,共同竞争,为薄膜提供矫顽力;④要提高薄膜完备系的矫顽力,可将磁记录膜制成纳米级薄膜.     

Regressions for sums of squares of spacings

Starting with a new formula for the regression of sum of squares of spacings (SSS) with respect to the maximum we present a characterization of a family of beta type mixtures in terms of the constancy of regression of normalized SSS of order statistics. Related characterization for records describes a family of minima of independent Weibull distributions.     

Generalized Inv-Log-Gamma-G processes

Abstract

Gamma processes belong to subordinators for which very small jumps occurs infinitely many times in any finite time interval but their sums are finite. Here we consider their novel and important modifications with a nice application potential. A generalization of fractional kth lower record value process defined in Bieniek and Szynal, called Inverse-Log-Gamma-G process is investigated. Explicit relation with the Gamma process is presented and conditional, posterior and finite dimensional distributions are derived. The results are obtained by appropriate transformations of known stochastic processes. In contrast with the regression this allows us to describe the finite dimensional distributions of the processes of interest and in this way to make their full characterization.     

Records with confirmation

In the present paper, the concept of records with confirmation is proposed. This new concept implies that such records cannot be contaminated with sample outliers. On determining records with confirmation, we discuss their distributional and limit properties. A test based on records with confirmation is provided in our work. We also present simulation techniques for generating record values with confirmation.     

发现于普陀山的植物区系新资料

报道了发现于浙江普陀山的5种新记录植物,分别是海岸卫矛Euonymus tanakae Maxim.（中国大陆新记录）、毛果甘薯Ipomoea cordatotriloba Dennst.（中国归化新记录）、滨海鸡屎藤Paederia scandens（Lour.）Merr.var.maritima（Koidz.）Hara（中国大陆新记录）;夏威夷紫菀Aster sandwicensis（A.Gray）Hieron.（中国大陆归化新记录）和硬雀麦Bromus rigidus Roth（浙江归化新记录）.     

发现于温州的浙江植物区系新资料

报道了发现于温州的2个浙江植物分布新记录属和4个新记录种,2个新记录属分别是吻兰属(Collabium Bl.)和刺蕊草属(Pogostemon Desf.),4个新记录种分别是台湾吻兰(Collabium formosanum Hayata)、翘距虾脊兰(Calanthe aristulifera Rchb. f.)、水珍珠菜(Pogostemon auricularius (Linn.) Kassk.)和疏花车前(Plantago asiatica Linn. subsp. erosa (Wall.) Z Y LI).凭证标本保存于温州大学标本馆(WZU).     

“物质的分离与提纯”新授课教学实录与反思

针对《化学1》中"物质的分离与提纯",阐述了基于学科观念的教学设计思想、教学过程实录以及教学反思。教学形式上求新,模仿央视2套"是真的吗"节目的环节开展讨论;教学内容上求实,联系"物质的分离与提纯"在生活、生产等方面的实际应用;教学方法上求变,从原理的迁移、装置的改进和仪器的选择等角度引导学生学习,通过提出有思考价值的问题以及开展实验探究活动,引导学生主体参与和理解,以求引领学生从"知识为本"转向"观念建构",促进学生的认识发展、思维发展和个性发展。     

浙江种子植物新资料(Ⅳ)

继续报道最近发现的一些浙江地理分布新记录,是对浙江种子植物区系资料的补充.新记录共有9种1亚种,它们是：红豆杉科(Taxaceae)的巴山榧树(Torreya fargesii );胡椒科(Piperaceae)的竹叶胡椒(Piper bambusifolium );马兜铃科(Aristolochiaceae)的肾叶细辛(Asarum renicordatum );牻牛儿苗科(Geraniaceae)的突节老鹳草(Geranium krameri );葡萄科(Vitaceae)的小果葡萄(Vitis balansana );唇形科(Labiatae)的岐伞香茶菜(Isodon macrophyllus)和山地假糙苏(Parapholomis foliata subsp. montigena );玄参科(Scrophulariaceae)的华中婆婆纳(Veronica henryi);菊科(Compositae)的紫菀(Aster tataricus );兰科(Orchidaceae)的叠鞘兰(Chamaegastrodia shikokiana ). 其中叠鞘兰属为华东新记录属.