襄阳区水稻测土配方施肥“3414”试验初报

通过“3414”试验,确定了襄阳区水稻主推品种华两优1206,在有机质含量为2．11％,碱解氮为79．97mg／kg,有效磷为13．34mg／kg,速效钾为74．20mg／kg,pH为7．1的淹育型水稻土田块上种植,氮、磷、钾肥的施肥量分别为N13．3kg／666．7m2、P2O5 4．0kg／666．7m2,K205．9kg／666．7m2时,水稻可获得最高产量,分别为450．9kg／666．7m2,445．6kg／666．7m2、443．9kg/666．7m2;氮、磷、钾肥的施肥量分别为N9．6kg／666．7m2,P2052．7kg/666．7m2、K204．1kg/666．7m2时,水稻可获得经济最佳产量,分别为446．7kg/666．7m2．443．7kg／666．7m2,441．6kg/666．7m2。     

为什么去掉最高分和最低分

电视台举办歌手大奖赛,一位歌手唱完后,6个评委亮出的分数,由低到高依次为：9．00、9．50、9．55、9．60、9．75、9．90。按评分规则,去掉最高分和最低分,将其余4个得分的平均数作为歌手的得分,即（9．50＋9．55＋9．60＋9．75）／4=9．60（分）。     

代值验证法解数学选择题

数学选择题的特点：1．立意新颖、构思精巧．迷惑性强,内容相关相近,真伪难分．2．技巧性高、灵活性大、概念性强,题材含蓄多变.3．知识面广、切入点多、综合性强,内容跨度较大．4．答案唯一     

大学生就业力影响因素问卷的编制

目的：构建大学生就业力影响因素模型并以此为基础编制问卷．检验其信效度．方法：通过人物访谈、开放式问卷等方法形成初步问卷．使用SPSS130和AMOS7．0软件对其进行探索性因素分析和验证性因素分析．结果：探索性因素表明．大学生就业力影响因素由个人基本情况、就业基本素质、兴趣习惯、个人特长、家庭状况、外语能力、实践能力、就业技能训练、就业期望、就业适应性、就业主动性、学习能力、学校因素13个因素构成;验证性因素分析表明：x2／df=2．335．RMK=0．086,GFI=O．764,RMSEA=0．058,CFI=0．822．IFI=0．823．问卷的内部一致性系数为0．938．各维度内部一致性系数为0．7～0．9．结论：大学生就业力影响因素问卷具有较好的信度与效度．     

中西部经济数据“优于”东部说明产业转移正在加速进行

据国家发改委统计,上半年,西部、东北、中部地区社会消费品零售总额增长均快于东部地区,上述四个地区社会消费品零售总额分别增长21．65％、21．39％、22．47％和21．10％。上半年,西部、东北、中部和东部地区投资高速增长,分别达到28．62％、36．36％、35．11％和22．08％。东部地区占全国的比重46．44％,同比下降2．04个百分点;西部、东北和中部地区分别提高0．2、0．59和1．25个百分点。另外,西部、东北、中部和东部四个地区设备工器具购置投资增长均快于建筑安装工程投资增长。从工业经济增速看,上半年,西部、东北、中部和东部四个地区工业生产增加值分别增长19．74％、19．06％、21．41％和15．73％。中部地区增速创造今年以来新高,而东部地区创造近几年的新低。     

基于GIS的太白山植被与环境梯度关系分析

在GIS支持下,应用GIS空间分析功能,选取了年均温、年降水量、海拔、坡度和坡向5个环境影响因子,将各环境因子分别与太白山植被类型图叠加,并对不同植被分布与环境因子的关系进行统计分析。结果表明,灌丛草甸、太白红杉、巴山冷杉、桦林、栎林最适年均温度范围分别为-1．14℃-2．60℃、0．01℃-4．34℃、1．49℃-5．23℃、2．62℃-7．23℃、4．74℃-8．85℃最适年降水量范围为719．1-754．5mm、717．9-754．6mm、731．1-768．3mm、705．6—755．3mm、680．9—740．1mm;最适海拔范围为2659—3572m、2607—3454m、3334—3164m、1997—2840m、1412—2196in;在坡度上,各种植被大多较均匀地分布在斜坡、陡坡、险坡上;在坡向上,各植被类型主要分布在半阳坡和阳坡上。     

FAAS法测定凯里商陆不同部位的微量元素

采用火焰原子吸收光谱法测定凯里产商陆根、茎和叶中锌、铁、锰和铜的含量,为其开发和利用提供参考．结果表明,zn、Fe、Mn在商陆根中分别为60．64,528．17,105．63mg／kg;在商陆茎中分别为52．91,92．10,88．18mg／kg;在商陆叶中分别为133．10,726．37,589．47mg／kg．Cu未检出．Zn、Fe、Mn主要在商陆的叶中富集．     

卤素与人体健康

卤素包括氟、氯、溴、碘、砹五种元素,其中砹是放射性元素． 本文只讨论前四种元素．1．氟氟是人体必需的微量元素之一．它是形成强硬的骨骼和预防龋齿所必需的元素．正常人骨骼中含氟0．01％～0．03％,牙釉中含氟0．01％～0．02％．     

我院高血压病社区干预效果评价

目的探讨高血压病社区综合干预的可行性和有效性。方法通过对我院92名高血压病患者进行健康教育、生活方式干预和根据高血压病防治指南制定的个体化药物干预,随访16个月,观察其生活方式的改变、血压下降程度和并发症的发生。结果干预前我院高血压病人戒烟限酒、低盐饮食、规律运动和控制体重人数比率分别为21．7%、28．3％、34．7％和32．60,干预后分别为86．9％、89．1％、85．9％和71．7％（P〈0．01）。干预前我院高血压病患者对高血压知晓率、治疗率和控制率分别为60．8％、43．4％、28．3％,干预后分别为97．8％、80．4％、84．8%（P〈0．05）;干预前收缩压为（158．73±10．06）mmHg,舒张压为（103．40±7．21）mmHg;干预后收缩压为（128．40±9．36）mmHg,舒张压为（87．64±5．73）mmHg（P〈0．05）。结论社区高血压综合干预能有效提高高血压患者的知识知晓率、治疗率和控制率,能有效降低血压和减少并发症的发生。     

第一讲 数与式——1.1有理数

第1课时 有理数的概念 一、数轴、相反数、绝对值的基本概念 二、有理数大小的比较和运算1．利刚数轴．2．正数大于0,负数小于0,正数大于负数．3．两个负数比较大小．绝对值大的反而小     

秦岭锐齿栎种群比较研究

锐齿栎是秦岭中低海拔区域的主要树种之一,对秦岭佛坪、长青和太白山北坡三个区域分布的锐齿栎的组成和结构特征进行分析,结果表明：（1）在佛坪自然保护区,锐齿栎分布范围最大,个体数量多,种群结构表现为增长型;落叶阔叶林将是该区域将来的主要组成类型,锐齿栎和化香树等阔叶树种将成为该区域将来的主要组成成分.（2）在长青自然保护区,锐齿栎分布范围大,个体数量多,种群结构表现为增长型;针阔混交林将是该区域将来的重要组成类型,锐齿栎、铁橡树和华山松等将成为在群落中具有明显优势的树种成分.（3）在太白山北坡,锐齿栎种群分布范围很小,个体数量和幼龄个体较少,种群结构趋于衰退,该地区的锐齿栎林很可能在将来被其他类型所取代.     

秦岭中段红腹锦鸡冬季的生态观察

报道了秦岭中段佛坪县红腹锦鸡栖息地植被类型、冬季种群密度、性比、日活动规律和食物种类．     

道光《城口厅志》的三种印本

《城口厅志》应只有一种版本,即刘绍文主持的道光24年刻本。所见三种印本中,四川本印刷时间更早,书版的毁损程度较轻。城口本、重庆本印刷时间约晚50年,书版的毁损程度较重,但印刷质量较好,内容更完整,并增补有少量光绪年间的材料。城口本中的补正出自近人,讹误较多。     

The Relationships among Verbal Skills of Primary School Students with Specific Learning Disabilities and a Typically Developing Comparison Group

The relationships among verbal skills of primary school students with learning disabilities and a typically developing comparison group were studied and compared with written tasks carried out in Estonian classrooms. Word defining, categorising/justifying, guessing, and memorising tasks were used. The participants were 251 students in Grades 2–4; of these, 163 were described as achieving normally and were in regular education classrooms, and 88 were diagnosed as having specific learning disabilities and attended special schools or classes for students with specific learning disabilities. Except for performance on the memorising tasks by grade, all the scores were better in upper grades. Children with learning disabilities performed less well than the children in the typically developing comparison group on all the tests. Associations between the results of various tests were stronger in the typically developing comparison group than in the group of children with learning disabilities.     

晏阳初与裴斯泰洛齐乡村教育思想之比较

“定县模式”与“新庄模式”是中外教育史上乡村教育的两面旗帜,晏阳初和裴斯泰洛齐就是乡村教育运动中伟大的旗手。他们的乡村教育思想折射出根植于现实的教育家的理想诉求,迎合了那个时代的民族改造浪潮,反映出复兴民族的时代精神。尽管他们所处的国度与环境不同,但他们的教育实验过程和理论的形成过程有较多的相似之处。他们都具有基督的博爱精神;受到西方教育思想的深刻影响;肩负着教育改造社会的使命感和责任感;他们的乡村教育理论根植于各自社会的文化传统、国家教育的现实以及乡村教育改革的需要。他们的教育实验扎根于农村;实验服务的对象是穷人;其目的是解决农民的劣根性;教育内容强化训练、重实用、重生活;教育手段上科学化、简单化,成功地创造了两种乡村教育模式。     

华支睾吸虫生态室生物材料在教学中的应用

在完善的水循环人工生态系统养殖华支睾吸虫的第一、第二中间宿主淡水螺类和鱼类,并进行人工感染实验,为教学提供生物材料。解剖动物收集华支睾吸虫卵,放入培养皿和养殖缸内感染第一中间宿主纹沼螺、长角涵螺;取阳性螺逸尾蚴感染第二中间宿主鱼类;采用鱼肉压片法观察寄生在鱼肉中的活囊蚴;采用人工消化法分离鱼体内的活囊蚴感染实验动物;解剖动物模型。学生观察到了华支睾吸虫生活史发育过程中的各时期活虫体,并获得生态室内鱼类的感染数据。在完善的水循环生态环境条件下,感染华支睾吸虫的第一、二中间宿主生长繁殖良好,其体内的尾蚴和囊蚴为实验教学提供了丰富的生物材料。     

The Effect of Worked Examples When Learning to Write Essays in English Literature

Worked examples, commonly used in technical domains, are rarely used in language areas such as English literature. In 3 experiments, Korean university students for whom English was a foreign language received worked examples intended to facilitate problem solving in the ill-structured domain of English literature. During the learning phase, half of the students were presented conventional essay questions that they were asked to answer. The other half of the students were presented the same questions along with model answers that they were asked to study, followed by similar questions that they had to answer themselves. All students then were asked to answer retention, near and far transfer tests. Relatively more knowledgeable students were assigned to Experiment 1 than to Experiment 2, who, in turn, were more knowledgeable than were the students in Experiment 3. Results indicated that the effectiveness of worked examples increased with decreasing student knowledge.     

Strategies in Home and School Collaboration among Early Education Teachers

In this study, the strategies teachers use in home and school collaboration were surveyed. The subjects were early education teachers in Helsinki, Finland. Questionnaires were used for the data collection. Factor analysis resulted in the extraction of six strategy types. Strategies representing parents as the recipients of information were most frequently used. Strategies representing two‐way communication were also quite often in evidence. The most rarely used strategies included parents as decision makers, volunteers, or resources in the elaboration of learning. Teachers who had children who were approximately the same age as their pupils were more active in using strategies involving teachers as supporters of parenting and parents as a resource for the elaboration of learning. The strategies found and the implications of the Finnish data are discussed.     

Developmental factors influencing exceptional status at age six years

A multivariate analysis of exceptional states in 384 children aged 6 years is presented. Predictors were six items of information in the domain of child development, four items were in the domain of social factors, and three items were maternal traits. Criteria were six of nine exceptional states on which there were enough cases for multivariate analysis. The AID-4 interaction regression method was the technique of analysis applied to data gathered by prospective longitudinal study. No consistent sets of predictors were found for the criteria. However, Coddington's Life Changes scores were frequently observed as prime sources of variance. Social class scores were also important influences on criteria of exceptionality.     

乌塌菜Vc含量动态变化的初步研究

研究了乌塌菜不同品种、不同生育期、不同叶片、叶柄与叶片的Vc含量.结果表明:乌塌菜不同品种间叶片的Vc含量存在显著差异,但叶柄间的Vc含量差异不大;莲座期叶片的Vc含量均显著高于幼苗期叶片的Vc含量,莲座叶的Vc含量均明显高于心叶的Vc含量,叶片的Vc含量均显著高于叶柄的Vc含量.