有限区间上平稳 Poisson 过程增量及 Poisson 流的分布

在分析无限区间上强度为λ的Ｐｏｉｓｓｏｎ过程的基础上,提出了一类新的数学模型,即有限区间上的平稳Ｐｏｉｓｓｏｎ过程．得出了三个主要结论：有限区间上Ｐｏｉｓ－ｓｏｎ过程增量的分布,在有限区间上的Ｐｏｉｓｓｏｎ过程的增量是平稳的,有限区间上Ｐｏｉｓｓｏｎ流的分布密度．     

Weierstrass定理在线性代数中的一个应用

Ｗｅｉｅｒｓｔｒａｓｓ定理是数学分析中关于连续函数的一个重要性质,通过构造 某区间上用矩阵表示的连续实值函数,使它在该区间上满足Ｗｅｉｅｒｓｔｒａｓｓ定理的条件来证明矩阵的行列式大于零,同时得到了一些有用的结论。     

浅析Windows95的启动机制

详细介绍了Ｗｉｎｄｏｗｓ９５的启动机制,并对Ｗｉｎｄｏｗｓ９５的配置文件Ｍｓ－ｄｏｓ．ｓｙｓ作了全面的论述,最后给出了一般微机上Ｍｓｄｏｓ．ｓｙｓ设置．     

乘积Poisson流形的若干性质

围绕乘积Ｐｏｉｓｏｎ流形,证明了与之相关的５条性质：乘积Ｐｏｉｓｓｏｎ流形Ｍ１×Ｍ２上的Ｐｏｉｓｏｎ括号的整体表示、Ｐｏｉｓｏｎ结构ｗ的整体表示,Ｍ１×Ｍ２上的Ｈａｍｉｌｔｏｎ向量场Ｈｆ的自然分解、特征分布π（Ｍ１×Ｍ２）的直和分解及乘积辛流形上的Ｐｏｉｓｏｎ括号的一条性质,乘积Ｐｏｉｓｏｎ流形的局部分裂     

四川盆地晚侏罗世蜥脚类一新种

文章记述了在四川盆地上侏罗统上沙溪庙组采到的一批巨型蜥脚类恐龙化石新材料,建立了一新种——井研马门溪龙（Ｍａｍｅｎ－ｃｈｉｓａｕｒｕｓｊｉｎｇｙａｎｅｎｓｉｓｓｐ．ｎｏｖ．）。新种的发现进一步证明马门溪龙属（ＭａｍｅｎｃｈｉｓａｕｒｕｓＹｏｕｎｇ,１９５４）及马门溪龙科（ＭａｍｅｎｃｈｉｓａｕｒｉｄａｅＹｏｕｎｇｅｔＣｈａｏ,１９７２）的分类位置应归勺齿蜥龙超科（Ｂｏｔｈｒｏｓａｕｒｏ－ｐｏｄｏｉｄｅａＹｏｕｎｇ,１９５８）。     

集值映射上半弱连续性与上半拟*连续性

Ｍ．ｓｏｌｖｅｉｇ Ｅｓｐｅｌｉｅ 和Ｊａｍｅｓ Ｅ．Ｊｏｓｅｐｈ研究了单值映射的弱连续性,给出了相关的等价命题,本文将其结果推广到半弱连续集值映射上,将（２）中的某些结果的连续条件减弱为上半弱连续,并讨论了上半弱连续性与上半拟＊连续性之间的关系。     

试用Wierstrass定理证明闭区间连续函数的性质

应用Ｗｅｉｅｒｓｔｒａｓｓ定理证明闭区间上连续函数的四个性质。     

关于Poisson流形上的Casimir函数

本先叙述了与Ｐｏｉｓｓｏｎ流形和Ｃａｓｉｍｉｒ函数有关的概念和符号;再利用广义Ｐｏｉｓｓｏｎ括号的独特性质对Ｐｏｉｓｓｏｎ流形上的Ｃａｓｉｍｉｒ函数进行了讨论,得出了构造新Ｃａｓｉｍｉｒ函数以及与Ｃａｓｉｍｉｒ函数相关的广义Ｈａｍｉｌｔｏｎ向量场之间关系的几个命题。     

群机通信软件的实现技术

以直通式交换网络为基础,研究高速并行计算和实时仿真的通信软件。在直通网协议上直接构造消息通信原语,不用ＴＣＰ／ＩＰ协议;引入活跃消息（ａｃｔｉｖｅ ｍｅｓｓａｇｅ）,支持高层通讯机制,减少通讯量和通信开销;在硬件基础上提供广播机制;为减少中断开销和通信阻塞,引入可编程控制的ＰＯＬＬＩＮＧ机制。实现了ＨＰＭＰＳ（ｈｉｇｈ ｐｅｒｆｏｒｍａｎｃｅ ｍｅｓｓａｇｅ ｐａｓｓｉｎｇ ｓｙｓｔｅｍ）。所论述     

Finsler空间的子空间上的诱导Finsler联络

讨论了Ｆｉｎｓｌｅｒ空间的度量张量，得到其子空间的Ｆｉｎｓｌｅｒ丛中的诱导联络和子空间的切丛中的诱导非线性联络，从而得到Ｆｉｎｓｌｅｒ空间上的任意Ｆｉｎｓｌｅｒ联络在其子空间上的诱导Ｆｉｎｓｌｅｒ联络。     

Photoreceptive net in the mammalian retina. This mesh of cells may explain how some blind mice can still tell day from night

We have discovered an expansive photoreceptive 'net' in the mouse inner retina, visualized by using an antiserum against melanopsin, a likely photopigment. This immunoreactivity is evident in a subset of retinal ganglion cells that morphologically resemble those that project to the suprachiasmatic nucleus (SCN), the site of the primary circadian pacemaker. Our results indicate that this bilayered photoreceptive net is anatomically distinct from the rod and cone photoreceptors of the outer retina, and suggest that it may mediate non-visual photoreceptive tasks such as the regulation of circadian rhythms.     

棕色田鼠食性食量的研究

用人工室内饲养和野外实地观察的方法，对棕色田鼠的食性食量进行了初步研究．结果表明，棕色田鼠啃食多种农作物和大部分田间杂草，约有 １６ 个科近 ４０ 种．棕色田鼠日食量平均为 ３１８４ ｇ，对某种食物日食量存在着明显的季节变化．日食量与体重呈正相关，且同一年龄组（除幼体组外）的雌性鼠比雄性鼠平均日食指数高     

蜜蜂生物节律研究进展

 生物节律主要指有机体生命活动的内在节律性。蜜蜂生物节律受到其社会性的影响,从而参与许多复杂行为的调控。与果蝇相比,蜜蜂的生物节律与哺乳动物更相似。工蜂和蜂王的生物节律表现出高度的可塑性。例如,工蜂的昼夜节律受其劳动分工形式的调控,并通过与幼蜂的直接接触来调节,哺育蜂昼夜照料幼虫,在行为或时钟基因表达方面没有昼夜节律变化。从蜜蜂的社会性、蜜蜂生物节律产生的分子机制、神经基础、研究方法、可塑性、蜜蜂的睡眠等方面综述了蜜蜂生物节律的研究进展。     

CONSTANS mediates between the circadian clock and the control of flowering in Arabidopsis

Flowering is often triggered by exposing plants to appropriate day lengths. This response requires an endogenous timer called the circadian clock to measure the duration of the day or night. This timer also controls daily rhythms in gene expression and behavioural patterns such as leaf movements. Several Arabidopsis mutations affect both circadian processes and flowering time; but how the effect of these mutations on the circadian clock is related to their influence on flowering remains unknown. Here we show that expression of CONSTANS (CO), a gene that accelerates flowering in response to long days, is modulated by the circadian clock and day length. Expression of a CO target gene, called FLOWERING LOCUS T (FT), is restricted to a similar time of day as expression of CO. Three mutations that affect circadian rhythms and flowering time alter CO and FT expression in ways that are consistent with their effects on flowering. In addition, the late flowering phenotype of such mutants is corrected by overexpressing CO. Thus, CO acts between the circadian clock and the control of flowering, suggesting mechanisms by which day length regulates flowering time.     

An inducible promoter fused to the period gene in Drosophila conditionally rescues adult per-mutant arrhythmicity

The period (per) gene of Drosophila melanogaster is involved in the expression of circadian rhythms of locomotor activity in adult flies. Molecular studies of per (reviewed in ref. 2) have shown that the transcribed and translated products of this gene are present primarily at the embryonic, pupal and adult stages. Here we describe experiments with arrhythmic per mutants bearing an inducible form of this gene which indicate that strongly rhythmic adult behaviour can be obtained only if per expression is induced in the adult, independent of its history of expression earlier in development. Thus per-mutant locomotor-activity phenotypes seem not to result from abnormalities in the development of neural structures or in physiological processes that may be required at pre-adult stages for the expression of this circadian rhythm. Moreover, the action of per after light:dark cycle entrainment seems to be sufficient for activity rhythms to be exhibited in constant darkness; this suggests further that the per product is required only during the time that the rhythmic behaviour is being manifested. Our strategy used a heat-shock gene promotor fused to per coding sequences to obtain conditional gene expression. Heat-shock promoter-driven genes have previously been used to study the mode of action and tissue specificity of a variety of Drosophila genes; our experiments on circadian rhythms demonstrate the use of such gene constructions for the temporal manipulation of genes whose phenotypes, behavioural and otherwise, affect whole organisms.     

吉木萨尔县园林鼠类群落的研究

１９９５年８－１１月，在新疆吉木萨尔县林良种试验站，对园林鼠类群落结构进行了调查研究，在不同的生境选１５个样地，以铗夜法捕获的９５３只鼠作分类。经聚类分析，结果表明：该地鼠类群落由根田鼠。小家鼠，灰仓鼠，小林姬鼠，红尾沙鼠，草原兔尾鼠组成，可划分为根田鼠＋灰仓志群落和小家鼠＋灰仓鼠群落。     

Regulation of circadian behaviour and metabolism by synthetic REV-ERB agonists

Synchronizing rhythms of behaviour and metabolic processes is important for cardiovascular health and preventing metabolic diseases. The nuclear receptors REV-ERB-α and REV-ERB-β have an integral role in regulating the expression of core clock proteins driving rhythms in activity and metabolism. Here we describe the identification of potent synthetic REV-ERB agonists with in vivo activity. Administration of synthetic REV-ERB ligands alters circadian behaviour and the circadian pattern of core clock gene expression in the hypothalami of mice. The circadian pattern of expression of an array of metabolic genes in the liver, skeletal muscle and adipose tissue was also altered, resulting in increased energy expenditure. Treatment of diet-induced obese mice with a REV-ERB agonist decreased obesity by reducing fat mass and markedly improving dyslipidaemia and hyperglycaemia. These results indicate that synthetic REV-ERB ligands that pharmacologically target the circadian rhythm may be beneficial in the treatment of sleep disorders as well as metabolic diseases.