白颊长臂猿

白颊长臂猿属灵长目长臂猿科长臂猿属，为国家一级重点保护动物，世界自然保护联盟（IUCN）级别为濒危。白颊长臂猿是躯体更加纤细而四肢显得更长的一种长臂猿。雄性黑色，唯两颊各具一大型白斑，顶部的簇状冠毛显得更尖长而明显。雌性暗褐色冠斑呈多角形。躯体大部污黄色，胸腹的黑褐色稀少。     

矩阵空间中向量的坐标及过渡矩阵的求法

利用行初等变换的方法，给出了数域K上一切n阶矩阵所成的向量空间M。中矩阵向量关于基的坐标及求由一个基到另一个基的过渡矩阵的新方法．     

规则几何图形的识别分析与算法实现

对规则几何图形进行了分析，并对识别的算法和实现进行了分析与研究．在此基础上提出了利用图形的面积和周长的比值范围来识别出图形的形状。最后利用VC＋＋给出该算法的实现过程，利用此程序能识别出计算机中的规则几何图形。     

我记住了这个教训

小学四年级的一天,我放学后来到爸爸单位的收发室。我拿了当天的报纸,报纸旁一沓书信跳入我的眼帘,我随意翻看着信封。“呀!这不是长臂猿邮票吗？”眼前的这张长臂猿灵巧地攀在树干上的邮票,使我兴奋得眼睁得又大又圆,要知道我迷上集邮已经一年多了,这张邮票可是我找了许久的呀,有了它,     

基于八邻域算法的多区域面积测量方法的应用

计算图像中多区域的面积,可通过对连通域进行分析的八邻域算法来实现．分析了八邻域算法的基本原理、步骤和编程时的注意事项,并对此算法进行了验证．使用该方法不受因像中区域多少和形状的限制．     

基态MgAl分子势能函数的研究

本文采用密度泛函理论中的B3LYP方法,以cc-pVDZ为基函数,对MgAl分子的基态势能进行计算,根据计算值拟合出了MgAl分子的势能函数的各参数,并根据拟合出的参数值计算出了力常数和光谱数据．     

基于小波变换和径向基神经网络的签名识别

主要研究利用小波变换和径向基神经网络进行签名图像的分类识别.它包括不同签名图像和相似签名图像的分类识别.所提出的方法包括小波域的图像特征提取和利用径向基神经网络的模式分类.采用小波的多分辨分析方法对签名图像进行时频分析特别有效.熵和能量相关特征的概念用于小波域.径向基神经网络具有快速的收敛速度和分类能力.实验仿真证实了利用小波变换和径向基神经网络进行签名图像分类识别的有效性,且成功识别率100%.     

我追求比家更大的世界

有人说：家是一棵树，父母是树干，儿女是树叶，枝繁叶茂了，家便充满了生机。     

求阴影部分面积的思想方法

阴影部分的图形一般都是不规则图形，因此，要求它的面积，首先通过图形分析，把阴影部分的面积分解为规则图形（如圆、扇形、弓形、三角形、矩形、菱形、正方形等）面积的和或差，然后利用规则图形的面积公式进行计算，即把不规则图形的面积计算转化为规则图形的面积计算．这就是求影阴部分面积的思想方法．下面举例说明，供参考‘例1如图1，已知AB是半圆0的直径，C是半圆周上的点．如果zCAB—30”，BC—6，那么留中阴影（弓形）部分的面积为（1996年成都市中考题）分析图中阴影部分的面积可以看成是半圆面积与凸ABC的面积的基．因此…     

《贱猴卡卡的故事》创作后记 人类更需要自我救赎

云南有座衷牢山．衰牢山长近千公里,区境面积503．6平方公里,森林覆盖率达85％,上世纪八十年代被划为国家级自然保护区．是国家重要的保护水源林,生活着绿孔雀、灰叶猴、长臂猿、黑熊、棕熊、华南虎等各种野生动物,有植物王国和动物王国的美誉。     

On the move: What causes animals to disperse?

The phenomenon of dispersal has been defined in many different ways, of which one of the oldest definitions was the one given by Lidicker in 1975 [1]. He defined dispersal as“…any movement of individual organisms or their propagules in which they leave their home area, sometimes establishing a new home area. This does not include short-term exploratory movements, or changes in the boundaries of a home range, such that the new range includes at least part of the former. Dispersal thus produces homeless travelers (vagrants) who are in search of a new home.” Dispersal has been at the forefront of research involving animal behaviour and ecology for a very long time.     

Exploring the Secret Garden: the growing importance of ICT in the home

The use of ICT (information and communication technology) in homes is growing faster than its use in schools and colleges—and there are already more systems in homes than in educational settings. This article argues that we should attempt to enter the area which most research on ICT in education tends to ignore: the secret garden of the learner at home. It is based partly on two pilot case-studies of secondary schools and a small sample of their students. Given the paucity of research in this area the article poses more questions than it answers. What are the implications of ICT use at home for teachers in schools? Do home systems interfere with school education or can they be used to enhance it? How should teachers respond to, and assess, work done using home ICT? Is the home situation widening the gap between one set of pupils (the "haves" of ICT) and another? Suggestions for school policies and action research for the future are put forward.     

“We’re not just sat at home in our pyjamas!”: a thematic analysis of the social lives of home educated adolescents in the UK

A common perception of home education is that despite potential beneficial educational outcomes, children who are home educated lack social experiences and therefore show poor social development. However, previous research in this area suggests that home educated children demonstrate a range of age-appropriate social skills. This research has mainly focused on children younger than 12; thus, we have much less of an understanding of the social impacts of home education on adolescents. Furthermore, previous research has often used social skills questionnaires and has not explored the experiences of home educating families from their own perspectives. The current study addresses these gaps in the literature by interviewing three home educated adolescents and their mothers about their social experiences and development with the research question of ‘how do home educated adolescents and their parents experience and understand socialisation?’. In one-to-one interviews, young people (aged 11–14) were asked about their experiences and perceptions of their social lives. In a separate interview, mothers were asked about how they facilitated these social experiences and their perceptions of the impact this had on their child’s development. Data from the interviews was thematically analysed. Results suggested that adolescents participated in a range of social experiences that promoted their social skills, happiness and confidence. Participants felt that this created a positive social environment and sense of community, and encouraged the adolescents to interact with a diverse range of people. However, further research is needed to explore whether this finding is generalisable to the broader community of home educated adolescents.

     

Dual language development of Latino children: Effect of instructional program type and the home and school language environment

Latino dual language children typically enter school with a wide range of proficiencies in Spanish and English, many with low proficiency in both languages, yet do make gains in one or both languages during their first school years. Dual language development is associated with how language is used at home and school, as well as the type of instructional program children receive at school. The present study investigates how changes in both Spanish and English proficiencies of Latino, second-generation immigrant children (n = 163) from kindergarten to second grade relate to instructional program type as well as language use at home and school. A series of MANCOVAs demonstrated significant dual language gains in children who were in bilingual classrooms and schools where Spanish was used among the teachers, students, and staff. Furthermore, only in classrooms where both Spanish and English were used did children reach age-appropriate levels of academic proficiency in both languages. Home language use was also significantly associated with dual language gains as was maternal Spanish vocabulary knowledge before controlling for maternal education. Educational implications and potential benefits associated with bilingualism are discussed.     

福建崇武潮间带滨螺科的生态研究

研究福建崇武岩相潮间带三种滨螺的生态;粒结节滨螺（Nodilittorina ex-igua)、塔结节滨螺（N.pyramidalis)、粗糙滨螺（Littorina scabra）。粒结节滨螺为优势种,三种滨螺的分布均达于中潮区的下限,具有明显的垂直分局。随季节变化,栖息密度也出现变化。     

安徽省鹞落坪自然保护区不同居群鱼腥草叶面积与叶绿素相关性研究

目的:探索安徽省鹞落坪自然保护区不同居群鱼腥草叶面积、叶绿素含量及相关性,为鱼腥草生态栽培、科学管理、良种选育提供了科学依据。方法:扫描仪测定法、丙酮法和生物统计学方法。结果:不同居群鱼腥草叶面积、叶绿素含量具极显著性差异。叶面积与总叶绿素(Chl)、叶绿素a(Chl a)和叶绿素b(Chlb)含量均呈二项式相关,叶面积与Chl a/Chlb呈负线性相关;光照强度与鱼腥草Chl,Chl a,Chl b含量和Chl a/Chlb之间均呈负线性相关,叶面积与光照强度呈多项式相关。而Chl a/Chlb与Chl,Chl a,Chl b含量呈负线性相关,Chl与Chl a,Chl b含量之间均呈极显著正线性相关。结论:不同居群鱼腥草叶面积与叶绿素含量之间存在适应性变化,鱼腥草具有较好的耐荫特性。H1居群鱼腥草叶绿素含量、叶面积最大,Chl a/Chlb最小,H1居群的生境最适合鱼腥草药材生产。     

乐山市绿心公园三叶虫萤生境分析与夜间活动规律

文章对乐山市绿心公园内三叶虫萤成虫的生境和夜间活动规律进行了调研。研究结果表明,三叶虫萤栖息在停耕农田以禾本科植物为主,密度约110株/m2,栖息在草地以艾草为主,密度约为100株/m2,周边屏障植被种类主要有慈竹等。植被平均高度为44.2cm,土壤面上都有一层厚度约为11cm的枯草。三叶虫萤的种群密度约为4.8-8.1只/m2,在一定范围内,栖息地面积越大,三叶虫萤的密度越大。三叶虫萤在平坦区域几乎为均匀分布,在狭沟或不平坦的栖息地则分布不均匀。三叶虫萤在19：30左右周边光照度约为10.4 Lux时开始零星闪光,在20：00-21：30周边光照度约为0.1 Lux时发光达到高峰。雄性成虫夜晚活动旺盛,一次飞行距离0.5-8.0m,飞行高度0.3-2.6m;雌性成虫夜晚活动不活跃。成虫活跃期间平均温度为18℃,空气湿度为94%。栖息地土壤类型为壤土,湿度为38.47%。     

Teachers' ratings of functional communication in students with cochlear implants

The study examined factors associated with teachers' ratings of functional communication skills of students with cochlear implants. Deaf students living in and around a metropolitan area were surveyed to locate 51 with cochlear implants. Teachers rated each student's functional use of the implant, given three defined ratings. Additional information regarding sex, communication option, placement, home language, rural or nonrural address, etiology, and presence or absence of an additional disability was gathered. Chi-square analyses of the data were performed. The data indicated that students with a known etiology and a rural address, and who used sign language at home or school, were less likely than others to use the implant as a primary channel for receptive communication. The authors suggest that the teacher's role in implant use warrants more attention. Speech-language pathologists, otologists, audiologists, and parents of deaf children should consider all factors related to successful implant use before advocating or choosing this financially, emotionally, and therapeutically challenging option.     

Using quality improvement to promote implementation and increase well child visits in home visiting

A key goal of home visiting is to connect children with medical homes through anticipatory guidance regarding recommended well child care (WCC). Substantial barriers to WCC among low socioeconomic families can limit achievement of this outcome. Quality improvement strategies have been widely adopted in healthcare but only recently implemented in home visiting to achieve program outcomes. The objective of this initiative was to increase the percentage of infants enrolled in home visiting who completed at least 3 recommended WCC visits in the first 6 months of life within a large, multi-model program comprised of 11 sites. A series of 33 quality improvement cycles were conducted at 3 sites involving 18 home visitors and 139 families with infants in the target age range. These were deployed sequentially, and changes within and across sites were monitored using trend charts over time. Adopted strategies were then implemented program-wide. Initiatives focused on staff training in WCC recommendations, data collection processes, monthly family tracking reports, and enhanced communication with primary care offices. Data were shared in iterative sessions to identify methods for improving adherence. Wide baseline variability across sites was observed, with the percentage of infants with recommended care ranging from 35% to 83%. Over the project timeline, the percentage of infants receiving at least 3 WCC visits in the first 6 months increased from 58% to 86%. Quality improvement within home visiting can be used to improve WCC adherence and provides an example of maximizing implementation of home visiting interventions.     

广州南沙十九涌三种植物生境的大型底栖动物群落

于2007和2008年选择广州南沙十九涌海桑、芦苇和海雀椑三种植物生境,对大型底栖动物四个季度定量调查研究.结果显示：芦苇区计有大型底栖动物16种,密度2 236 ind.m-2,生物量6.61 g.m-2;海雀椑区计有大型底栖动物22种,密度1 298 ind.m-2,生物量7.71 g.m-2;海桑区计有大型底栖动物11种,密度429 ind.m-2,生物量3.73 g.m-2.结果表明：海雀椑区大型底栖动物种类多样性最高,海桑区最低,与海雀椑区及芦苇区差异较大.海雀椑生境四个季度的大型底栖动物密度优势种较明显不同,冬季为小头虫和沼蚓,春季为中华蜾赢蜚,夏季为莫顿长尾虾,秋季为疣吻沙蚕.三种植物生境间大型底栖动物群落结构、物种数、密度显著差异的原因与不同季节的气候变化及植物高度有关.