多媒体教学手段对数学教学的影响

多媒体作为一种现代化的教学工具,在现阶段的教学中得到了广泛的运用。本文通过具体事例从不同方面反映了多媒体给数学教学带来的变化,进一步阐述了网络教学的重要性。     

Basic skill requirements for selected Army occupational training courses

This study investigated the basic cognitive skills soldiers must possess before entering the Army, skills that are needed for successful completion of entry-level training. Judgments of 126 instructors from 25 military occupational specialties were obtained on 129 candidate skills, which resulted in the identification of 55 basic skills. Factor analysis of these 55 skill items resulted in 11 interpretable factors. Mean scores on the factors were compared across factors and across Army training schools. The results of the study suggest that, for all occupational specialties studied, skills related to the learning process are as crucial as traditional academic skills for successful training course completion. These results have important implications for training for the Army as well as for industry.     

公共图书馆服务变革机制研究--英国启示

论文从对英国公共图书馆服务现象的观察入手，探索现象背后的社会、法律等影响因素以及图书馆服务变革的趋势，以此为参照探讨中国公共图书馆服务的机制和变化，并进一步建构新的中国公共图书馆服务体系。     

The histone H3K27 demethylase REF6/JMJ12 promotes thermomorphogenesis in ArabidopsisOA

Dynamic trimethylation of histone H3 at Lys27(H3 K27 me3) affects gene expression and controls plant development and environmental responses.In Arabidopsis thaliana,RELATIVE OF EARLY FLOWERING 6(REF6)/JUMONJI DOMAIN-CONTAINING PROTEIN 12 demethylates H3 K27 me3 by recognizing a specific DNA motif.However,little is known about how REF6 activates target gene expression after recognition,especially in environmental responses.In response to warm ambient temperature, plants undergo thermomorphogenesi...     

砖混住宅楼顶层内纵墙斜裂缝原因分析及处理

目前,砖混结构房屋沿内墙或外墙经常出现斜向或水平裂缝,特别是住宅,一旦出现裂缝,给户主造成心理 上的负担,本文对砖混结构住宅楼顶层内纵墙墙体斜裂缝产生的原因进行分析,并提出处理办法。     

乌兰察布地区胡萝卜优化施肥方案初步研究

本试验通过正交旋转回归设计在乌兰察布地区选取氮、磷、钾和有机肥为参试变量,以胡萝卜产量为目标函数,建立了胡萝卜产量与参试因子间的数学模型,得出了各变量与产量的主次关系及各因素对产量的效应。最后,通过模拟寻优获得了本试验地条件下胡萝卜产量高于6000kg/667m2的施肥方案：N（8.06-8.72kg/667m2）、P2O5（3.89-4.26kg/667m2）、K2O（19.10-20.45kg/667m2）、有机肥（6346-6907kg/667m2）。     

现代流行花语的审美特性及其利用

文章从花语的含蓄性、丰富性、情感性、象征性等方面阐述了现代花语的审美构成与审美特性，并分析了现代流行花语提炼与升华的空间。     

Simple groups with orders 2^a3^b5^cp^d, 2^a3^b7^cp^d and 2^a3^b5^c7^d

This work deals with the power exponent r1 and r2 respectively of the maximal and second-maximal prime factors ofthe order of simple K4-group, and the classification for simple {5,7}′-K4-group G (i.e. ｜G｜ can not be divided by 5 nor by 7 or ｜π(G)｜ = 4 ), simple 5′ -K4-group G (i.e. ｜G｜ can not divided by 5 and ｜π(G)｜ =4) and simple 7′-Ea-group G (i.e. ｜G｜ can notdivided by 7 and ｜π(G)｜ =4). It is derived that r1 =1, 2 and 4, and r2 is not greater than 4. All the simple K4-groups with order 2^a3^b5^cp^d, 2^a3^b7^cp^d and 2^a3^b5^c7^d are obtained.     

英国职业教育体系建设及对我国职业学校发展的启示——以四川交通职业技术学院为例

通过深入考察了解,英国完善的职业教育管理体系,成熟的职业证书制度及与学业证书互通的架构,以及基于质量和学生个体差异的职业教育投入机制,对我国高等职业教育实施集团化办学、调动和整合社会资源、建设终身学习体系,建立科学的投入机制具有积极的借鉴作用。