清末民初(1897-1915)的农学报刊及对现代农业科技的传播

【目的】研究了清末民初(1897-1915)的农学报刊,探求了农学报刊与中国现代农业发展的关系。【方法】采用文献调研和对比分析等方法研究了农学报刊在中国创办、发展、传播的基本状况及其历史作用。【结果】农学报刊引入了现代西方农业理念,推动了中国现代农业发展,促进了社会进步。【结论】清末民初的农学报刊促进了现代传播业的发展,同时也深刻地影响了我国的农业现代化进程。     

贵阳花溪地区早三叠世碳、氧同位素特征及其古环境意义

对取自贵阳花溪地区改毛剖面上二叠统一下三叠统碳酸盐岩样品进行碳、氧同位素测定,利用所测数据建立相应的演化曲线.根据曲线变化情况,结合地质背景与岩性,着重探讨碳同位素变化的环境原因,并对研究区该时期古环境进行分析解释.研究表明,早三叠世初期,该地区海洋生态环境遭到严重破坏,但在Griesbachian早期有一次短暂恢复,而后又进入长期低迷的缺氧环境直到Smithian中期.     

高科技企业人才流失预警机制研究

以风险信息采集—风险预警指标库构建—风险评估—预警警报发布为逻辑思路阐述高科技企业人才流失风险预警模式。根据对人才流失风险的识别,从个体、组织、环境3个方面构建高科技企业人才流失风险预警指标体系,并利用层次分析法和熵权法对风险指标进行评估。最后,根据BP神经网络原理确定高科技企业人才流失风险预警模型,设计预警模型的构建步骤,进一步对风险等级及临界值进行设计和界定。     

Playful fostering of 6- to 8-year-old students’ inductive reasoning

This paper focuses on a training program in inductive reasoning for first-grade students and presents the direct results as well as the longitudinal effects of the evaluation study. The training is based on Klauer's theory of inductive reasoning and on his “Cognitive training for children” concept (Klauer, 1989a). The training program consists of 120 problems which can be solved through inductive reasoning. The tools for the training exercises were selected to correspond with the age of the targeted cohort. The experimental group in the study consisted of 90 students, whereas the control group was made up of 162. An inductive reasoning test was used in the pre- and posttest as well as in the follow-up study (one year later). The test comprised 33 figural, non-verbal items (Cronbach α = .86). On the posttest, the experimental group significantly outperformed the control group by more than one standard deviation. The experimental group scored significantly higher in each skill area targeted by the training. The most noticeable development was found in system formation. No gender differences were detected on the pre- or the posttest. The effect size of the training program was d = 1.12. In the follow-up study, the experimental group still significantly outperformed the control group; however, their respective levels of development had not changed in this one-year period. Thus, the training effect proved to be stable over time independent of individual students’ original level of inductive reasoning. This study provided evidence that inductive reasoning could be developed very effectively at this early age.     

Evaluating construct validity and internal consistency of early childhood individualized family service plans

This study presents evidence regarding the construct validity and internal consistency of the IFSP Rating Scale (McWilliam & Jung, 2001), which was designed to rate individualized family service plans (IFSPs) on 12 indicators of family centered practice. Here, the Rasch measurement model is employed to investigate the scale's functioning and fit for both person and item diagnostics of 120 IFSPs that were previously analyzed with a classical test theory approach. Analyses demonstrated scores on the IFSP Rating Scale fit the model well, though additional items could improve the scale's reliability. Implications for applying the Rasch model to improve special education research and practice are discussed.     

浅谈如何把握幼儿早期教育的“度”

我们知道,幼儿教育跟小学教育是两个不同的领域,它需要不同的教学理念、教学方法和教学手段,但在现实中,幼儿教育的“小学化”倾向正日益严重,不少幼儿园的教学手段尤其是私人幼儿园几乎跟小学一模一样。这种倾向,对于幼儿的健康成长是福还是祸？是喜还是忧,值得家长、幼儿园乃至全社会的深思。     

泰安市地质灾害预警预报系统研究

该文主要介绍了泰安市地质灾害气象风险预警与指挥系统。系统开发的主要目的是为了更好的与泰安市地质灾害防治工作相结合,通过对气象因素及地质灾害资料的分析和研究,基于地质灾害气象预警模型,采用先进的GIS技术能实现对地质灾害易发风险性区域预警,能直观地了解到各部分区域的地质灾害易发风险性,为各级政府防灾减灾提供科学的技术支撑。     

浅谈胶东半岛新石器时代早期文化

胶东半岛是指胶莱河以东的地区 ,是一个相对独立的地理单位 ,对于半岛地区新石器时代的早期文化存在着不同的认识 ,通过对白石村文化的文化特征及其与周围文化的联系等进行比较 ,白石村文化是胶东半岛新石器文化的源源。     

塔里木板块东北部柳园粗面玄武岩带：软流圈地幔减压熔融的产物

在塔里木东北部，甘肃省西部敦煌市柳园镇南侧，有一条近东西向展布的粗面玄武岩带，长度约150kin，宽度达10km，厚度为1900m。这条粗面石玄武岩带属下二叠统哲斯群，岩浆喷发方式以裂隙式溢流为主，枕状构造特别发育。在玄武岩层间夹有很薄的酸性凝灰岩和沉凝灰岩层，属典型的双峰式火山岩组合。按照岩石化学组成的TAS分类命名，主要岩石类型为玄武岩、夏威夷岩和橄榄粗安岩。主要造岩矿物为钠长石（Ab91～100）和普通辉石。普通辉石斑晶、钠长石斑晶和部分基质中的钠长石具有中空结构，并被层状硅酸盐微晶充填。这些岩石基本属碱性玄武岩系列和过渡型系列，大部分属演化的岩浆。演化程度较低的样品具有轻稀土元素亏损型配分曲线，微量元素地球化学具有MORB亲和性，εNd（t）-＋10．14～10．89。玄武质岩浆与陆壳物质之间有较轻的同化混染作用。普通辉石、铁钛氧化物的分离结晶作用是岩浆演化的主要机制。玄武质岩浆源区属于软流圈地幔．部分熔融发生于尖晶石稳定域．是软流圈地幔减压（上涌）熔融的产物。     

Help-seeking tendencies during early adolescence: An examination of motivational correlates and consequences for achievement

The present study examined the motivational correlates and achievement consequences of students’ help-seeking tendencies during sixth grade (N = 217). Students’ grades were collected from school records at the beginning and end of the school year. Midway through the year students reported on their academic self-efficacy and social demonstration goals; teachers reported on students’ help-seeking tendencies. First quarter grades and academic self-efficacy were positively related to adaptive help seeking and negatively related to avoidant help seeking. In addition, a social demonstration-approach goal was negatively related to adaptive help seeking. Help-seeking tendencies predicted 3rd quarter grades, controlling for 1st quarter grades.