发现于金华的浙江省卫矛科植物新记录

报道了最近在植物资源调查过程中发现的浙江地理分布新记录属永瓣藤属Monimopetalum Rehd.,新记录种永瓣藤（Monimopetalum chinense Rehd.）.     

离散记录时间的分布

使用组合数学与概率论的方法研究了离散和的纪录时间的分布,并得出两个纪录时间L(m)和L(m+1)的条件分布.     

Some characterization results based on the conditional expectation of a function of non-adjacent order statistic (record value)

In this paper, we attempt to characterize a distribution by means ofE[ψ(X _k +s:n)|X _k:n =z]g(z), under some mild conditions on ψ(·) andg(·). An explicit result is provided in the case ofs=1 and a uniqueness result is proved in the case ofs=2. For the general case, an expression is provided for the conditional expectation. Similar results are proved for the record values, both in the continuous as well as in the discrete case (weak records).     

On Statistical Inference Based on Record Values

We develop methodology for conducting inference based on record values and record times derived from a sequence of independent and identically distributed random variables. The advantage of using information about record times as well as record values is stressed. This point is a subtle one, since if the sampling distribution F is continuous then there is no information at all about F in the record times alone; the joint distribution of any number of them does not depend on F. However, the record times and record values jointly contain considerably more information about F than do the record values alone. Indeed, in the case of a distribution with regularly varying tails, the rate of convergence of the exponent of regular variation is two orders of magnitude faster if information about record times is included. Optimal estimators and convergence rates are derived under simple, specific models, and shown to be surprisingly robust against significant departures from those models. However, even under our special models the estimators have irregular properties, including an undefined information matrix. To some extent these difficulties may be alleviated by conditioning and by considering the relationship between maximum likelihood and maximum probability estimators.     

中国带鱼科鱼类一新纪录──棘背带鱼Assurger anzac(Alexander,1916)

首次报道了我国带鱼科鱼类一新纪录──棘背带鱼Ａｓｓｕｒｇｅｒａｎｚａｃ（Ａｌｅｘａｎｄｅｒ，１９１６）。标本１尾，系１９９６年１０月捕自舟山群岛海域。文中对该种鱼的形态特征作了较详细的描述。     

浙江水生植物分布5新记录种

报道了浙江的5种新记录水生植物,分别为阔叶慈姑（Sagittaria platyphylla（Engelm.）J.G.Sm.）、心叶刺果泽泻（Echinodorus cordifolius（Linn.）Griseb.）、伊乐藻（Elodea nuttallii（Planch.）H.St.John）、澳古茨藻（Najas oguraensis Miki）和两耳草（Paspalum conjugatum P.J.Berg.）.其中,伊乐藻属（Elodea Michaux）和刺果泽泻属（Echinodorus Rich.et Engelm.ex A.Gray）为浙江归化新记录属;阔叶慈姑、心叶刺果泽泻、伊乐藻和两耳草是归化新记录种,澳古茨藻为乡土植物新记录种.     

中国菊科植物拾零

报道了笔者在查阅、整理与鉴定浙江菊科Asteraceae植物过程中发现的一个分布于浙江的中国新记录种：舌叶天名精Carpesium glossophyllum,以作为中国种子植物区系资料的补充。与浙江产的烟管头草C. cernuum的区别在于该种植株矮小,分枝少;基生叶宿存;茎生叶披针形至狭披针形,宽0.6~1 cm,近全缘,几无柄;苞叶3~5枚,条状披针形,长10~12 mm,总苞较小,直径8~12 mm;总苞片先端钝,具齿蚀状锯齿。 此外,将先前误定为三脉叶兔儿风Ainsliaea trinervis的长圆叶兔儿风A. oblonga组合为A. kawakamii的变种A. kawakamii var. oblonga。     

非简谐阻尼振动与匀加速直线运动合成实验

分析了小球在斜槽内横向作非简谐阻尼振动同时又在其纵向作匀加速直线运动的轨迹的理论公式.让粘满碳粉的小球在铺有坐标纸的斜槽内运动,记录真实运动轨迹,从实验图像中可以看出振幅越来越小、波长越来越长,这与理论分析相符.     

基于距离的自适应Web数据库记录匹配方法

Web数据库环境的重复记录识别是Deep Web信息集成的重要步骤,具有查询依赖性、缺乏训练样本、在线处理要求等特征,导致现有的实体识别技术无法适用.在分析现有方法基础上,引入动态属性权重调整思想,提出基于距离的自适应记录匹配算法,在计算记录对的相似度时,加大匹配记录集合中相似度较大的属性的权重,并加大非匹配记录集合中相似度较小的属性的权重,迭代处理从而达到自适应动态调整各个属性权重的目标.该方法不需要训练样本,也不需要人工参与,实验结果表明其适用于Web数据库环境的重复记录识别处理.     

浙江新发现的一种国家二级重点保护野生植物——桫椤

报道了浙江桫椤科植物一新记录种--桫椤Alsophila spinulosa (Wall. ex Hook.)R. M. Tryon．列出了浙江桫椤科植物分种检索表．