浅谈课外作业要“适应”学生的有效发展

作业是课堂教学的一部分,是学生巩固所学,深化所学认知,进而提升能力的有效途径之一。通过数学作业的布置与安排,能够完善教学过程,反馈教师教学效果。但是作业的布置需要遵循一定的原则,特别是当前小学教学在新一轮课程改革的推动下正面临着新的要求,一定要针对性强、适度、高效,形成对于教学的辅助。在生本理念下要尊重学生个体差异,使之能从质、量两方面适应不同程度学生的需要。

浅析不同类型商业银行绿色金融发展质效与路径研究

在当今全球经济发展的背景下,绿色金融作为一种新兴的金融模式正逐渐成为商业银行转型升级的路径,不同类型的商业银行在推动绿色金融发展过程中展现出独特的能力,从大型国际银行到地方性银行,每种类型银行在参与绿色金融市场的方式和效果上存在差异,这会影响市场的质量,也决定绿色金融发展的效能。本文首先研究了绿色金融是新时代商业银行转型发展的重要方向,然后分析了商业银行类型分析,最后探讨了不同类型商业银行绿色金融发展路径。

基于水权初始配置的区域协同发展效度评价

基于流域各区域及其用水部门或行业的水权初始配置方案,从社会、经济以及生态环境角度,构建区域协同发展效度评价指标体系,建立灰关联投影寻踪综合评价模型,综合度量评价流域各区域之间的协同有序发展效度,通过各区域内部产业结构之间的横向比较,剖析区域之间的协同有序发展态势,诊断流域各区域及其用水行业的水权初始配置方案的合理性。结合案例分析进一步验证模型的有效性。

基于《流浪地球》的视效行业发展前景研究

随着《流浪地球》的火爆上映,观众对我国视效制作水准和视效行业的认识发生了巨大的改变,影片不但以超过46亿的票房居中国内地总票房第三的位置,其恢弘壮丽而又真实细腻的视效更是震撼了无数观众,中国视效行业未来的发展也随之成为了备受瞩目的话题.本文通过统计分析网络公开资源的方法研究目前国内视效行业发展状况及面临的人才短缺、软件受限和核心视效技术掌握不足等问题,在深入分析的基础上提出了关于视效人才培养以及丰富中国内涵的相关措施,并对5G时代视效行业的快速发展做出展望.

零售业发展质效的评价——基于企业微观层面的样本

文章以我国280家零售业上市公司的微观层面数据为样本,通过因子分析法和核密度图,实证分析评价了我国零售业的发展质效。研究表明,我国零售业的发展质效经历了一个适度改善的过程,且其发展质效存在一定的质效趋同态势;分维度来看,我国零售企业的社会性质效明显弱于收益性质效,其发展质效的维度不平衡性较大;从企业性质来看,零售业国有企业的发展质效明显弱于非国有企业。

金融发展对城乡收入差距的影响——基于中部六省2000-2011年面板数据的实证分析

为了研究金融发展对城乡收入差距的影响,论文采用了以城乡居民人口比重加权的基尼系数,以金融发展规模、金融发展效率作为衡量金融发展的指标,选取了合理的控制变量,基于中部六省2000-2011年的面板数据,借鉴并扩展了Clark,Xu和Zou的模型进行回归分析。实证结果表明,城乡收入差距与金融发展规模、金融发展效率存在协整关系;金融发展规模显著缩小了城乡收入差距,金融发展效率显著扩大了城乡收入差距,且前者的影响弱于后者,金融发展总体上对城乡收入差距的扩大具有显著的正向影响。第一、第二产业、城镇化都显著缩小了城乡收入差距,人力资本和农林水事务支出的影响不显著。城乡收入差距自身具有较强的、显著的、滞后效应。最后本文给出了相应的政策建议。

混合功能发展与需求侧供能——高密度亚洲城市中心区再发展的节能契机

在节能减排的前提下推进城市化进程是我国当前面临的重大课题。该文尝试从土地利用与用能类型之间的相关性入手,以近年来快速发展的以高效利用余热为特色的需求侧供能模式(CCHP或DES)为技术条件,从能效出发发掘高密度亚洲城市中心区的节能契机,最终架构基础设施服务范围最大化、城市活动消耗资源最小化、居民活动类型多样化的新型"混合功能发展"理论模式——EEOD。

发展城市群 共建大金华

按城市群是县域经济向区域经济提升发展的主要途径,是区域经济一体化的空间形态,是资源节约型、环境友好型社会建设的主要载体。"发展城市群、共建大金华"既是统筹区域发展的战略部署。

Research Progress on Plant Source Herbicide Adjuvants

As the important components of pesticide adjuvants, vegetable oil and its derivative adjuvants will be the focus of future development of herbicide adjuvants due to their superiority in good affinity with plants, strong biological degradability, few risk of damage, environrnental safety and ability to improve the weed control efficient. The research progress and application status of the plant source herbicide adjuvants were summarized, as well as the weeding enhancement mechanism and the effects on the environment and non-target organisms, and the existing problems and development trends were reviewed.

“本科生学习与发展调查”的理论基础、问卷框架及信效度——基于华中科技大学的实践

华中科技大学院校发展研究中心基于阿斯汀的"I-E-O模型"及汀托"学生成功的院校行动模型",主持开发了"本科生学习与发展调查"。该调查以阿斯汀的"I-E-O模型"为主体框架,将该模型中的"环境"指标细化为汀托"学生成功的院校行动模型"的四个要素——学业期望值、学校支持度、考核与反馈、学生投入度。通过内部一致性信度系数、探索性因子分析及相关分析,对问卷的信度、结构效度及效标关联效度进行了初步检验。检验表明,"本科生学习与发展调查"问卷具有良好的信效度,是我国院校研究国际化和本土化实践的积极探索。

Yield Increasing and Quality Improving Effects of Smash-ridging Method("4453" Effects) and Its Potential in Benefiting the Nation and the People

Yuan Longping proposed that smash-ridging technology could be extend-ed widely nationwide. ln the research, smash-ridging technology reconstruct cultiva-tion layers with loose soils in agricultural fields, creating ＂4453＂ effects, as fol ows： ＂Four increases＂ include to increase loosen soil quantity in cultivation layers, soil nutri-ents use, ＂water pool＂ in soils, and ＂oxygen pool＂ in soils. Four reductions are to reduce soil erosion, carbon emission, salt content and heavy metal in soils. Five resistances refer to improve crop resistance capacity in terms of drought, high tem-perature, lower temperature, disease and lodging. Three improvements indicate to enhance photosynthetic efficiency over 10%, yield in 10%-30% and quality over 5%. lt is researched that without additional chemical fertilizer, yield could increase by 10% by labor force, animal, tractor or smash-ridging machine. What’s more, by smash-ridging cultivation, the depth can be 20 times or higher compared with tractor cultivation, with looser soils. lt is estimated that if smash-ridging cultivation is applied once in agricultural lands in China, present soil layers can be twice as deep as present. Specifical y, the thickness of loose soil-layers could be extended from 10-18 cm at present to 25-35 cm, and natural rainfal would increase by 40 bil ion cm3. After vitalization of soil nutrients, chemical fertilizer would decrease by 7 bil ion kg, and the increased c rops would feed more than 300 mil ion population as per yield at 7 50 kg/hm2.

Production Performance and Development Strategies of Double-cropping Rice in Hunan Province

ln the research, an empirical analysis was performed on production per-formance and influential factors of rice in Changsha County and Liling City. The re-sults showed that production scale has been closely linked to age and education level of farmers. The larger scale, the higher comprehensive performance, but rele-vant efficiency tends to be lower. Sowing area and yield per unit area are major in-fluential factors of production performance of double-cropping rice, but the rest influ-ential factors are different upon production scale. Final y, developmental strategies are proposed for development of double-cropping rice.

INTEGRATION OF HUMAN FACTORS ENGINEERING AND QUALITY MANAGEMENT

Human factors engineering and quality management are different research branches in the field of industrial engineering.A basis for interaction based on the concepts and techniques of human factors engineering and quality management with some practical examples of cooperative effect is defined in this paper.The specific challenges about the quality management in manufacturing and service are presented to demonstrate that the human factors analysis of quality problems leads to new tends for integrated development.

A Summary of Ratoon Rice Production Technology in Southwest Ecotope of China

This paper focus on the ratoon rice, which with the features of south Chi-na paddy cultivation technology. First, the development of the technology research on ratoon rice in southwest ecotope of China was briefly reviewed. Second, the key technical measures of the ratoon rice production were described in detail. At last, the application effect of the ratoon rice production technology was described accu-rately, which based on the production practice in recent years. The purpose of this article is promoting the research and extension of the ratoon rice technology more widely in world’s main rice-producing areas, especial y in the suitable area where the light and heat resources are rich.

Goals and Key Technology of Fertilizer-pesticide "Double Reduction" and Synergism for Greenhouse Strawberry

In order to develop green good, reduce the use of chemical fertilizer and pesticide, realize ＂double reduction＂ and synergism, improve safety and quality of products, protect the ecological environment and promote the healthy and steady development of strawberry industry, the goals and key technology of fertilizer-pesticide ＂double reduction＂ and synergism for greenhouse strawberry are summed up in this paper targeting at the current situation of strawberry production and combined with the new technology achievements at home and abroad. The key technology includes six items： healthy seedling cultivating technique, soil improvement and continuous cropping obstacle treatment technique, agricultural ecological prevention tech- nique, physicochemical trap of pest control technique, biological control technique and low residual risk chemical control technique.

Discussion on Green Development of Fenlong for Yield Increase, Quality Enhancing, Water Retaining and Multiple Use of Natural Resources

Fenlong green ecological agriculture technology （Fenlong technology）, a new smash ridging farming method developed by Guangxi Academy of Agdcultural Sciences, has been elected as the recommended cultivation technique by the Ministry of Agriculture of China. It replaces the traditional plowshare with spiral drill, and its tilth depth is twice deeper than that by tractor tilthing. It also extends soil nutrient, moisture, oxygen and microorganism, the so-called ＂Four pools＂. Soil nutrient, oxygen, microorganism, light and rainfall use ratio is increased by 10%-100%, creating a platform for natural increase of more than 10% of crop yield. Its application to over 20 kinds of crops in 21 provinces has proved that the yield increases 10-30% with quality enhancing 5% and double water retaining capacity but no more input. When the application area of Fenlong could reach 67 million hm2, the amount of fertilizer can be reduced by 40-50 billion kg, saving 120-150 billion Yuan. In this paper, we put forward the strategy of ＂4＋1＂ （arable, saline-alkali soil, grasslands, Sponge City ＋ rivers） green development in China, and deepened the Fenlong cultivated tilled layer from 16.5 cm to 35 cm for 67 million hm2 arable land, ridged 13.3 million hm2 of saline-alkali soil for 35 cm, and also 35 cm for 67 million hm2 degraded steppe, which could have the following 3 effects： first, the 147 million hm2 of land with Fenlong cultivation could increase loosing soil to 315.491 billion m3, in＊ creasing by 159.26% for 120 million hm2 of arable land with the average tilled layer of 16.5 cm, which has loosing soil of only 198.1 billion m3, that is, the space of the land increases 1.6 times. Second, every hectare of plowland could store up to 450 m3/hm2 of natural rainfall, and the unused 60 m3 of saline-alkali soil and grasslands could store water of 102 billion m3, showing an increase of over 88.89% for the current plowland storage of 54 billion m3 at now, that is, double the natural rainfall storage capacity. Third, the two multiple increase of natural resources application can bring trillions of resource activation, environmental cleaning, food security, citizens, health, economic, ecological and social benefits, and makes the Chinese nation move forward in green development. Its application in ＂big scientific research＂ and ＂One Belt And One Road＂ will contribute Chinese strength to the world.

完善普惠金融信贷发展质效的策略研究

2015年颁布的《推进普惠金融发展规划(2016-2020年)》已经运行两年多了,其后国家层面出台了一系列导向和指引以及各类政策。根据规划的定位,传统金融机构在普惠金融发展中起主导作用,在其为普惠金融重点服务对象提供的全品种一揽子的金融服务中,信贷业务又因"融资难、融资贵"问题而再度被聚焦。本文以传统综合性商业银行的小微业务为调研对象,在客户分类和业务分层的基础上,探讨通过定性、定量因素的组合,借力新兴数字技术、传统授信技术,提升普惠金融信贷发展质效的可行性。

Evaluation of soil arching effect due to partially mobilized shear stress in piled and geosynthetic-reinforced embankment

In piled and geosynthetic-reinforced(PGR) embankment, the arching behavior determines the overburden load on piles and subsoils. Placement of geosynthetic is effective in reducing the relative displacement between pile and subsoil. When the mobilized shear stress is less than the shear strength, partially developed arching will occur. Consequently, existing analytical methods, adopting the ultimate shear strength failure criterion, need to be improved. This study developed a simplified 2 D analytical method, which is based on the developing arching effect, to evaluate the load redistribution of the PGR embankment. Then, the influences of embankment height and internal friction angle, subsoil depth, ratio of pile cap width to pile clear spacing(RPC) and geosynthetic tensile stiffness on the critical height ratio, stress concentration ratio, soil arching ratio, geosynthetic tension and axial strain were investigated. This study suggests that a RPC of 1:1.0 and a one-way of single-layer geosynthetic tensile stiffness of 2000 kN/m should be considered as the sensitivity thresholds for the PGR embankment.

Prediction of Thermophoretic Deposition Efficiency of Particles in a Laminar Gas Flow along a Concentric Annulus： A Comparison of Developing and Fully Developed Flows

Thermophoresis is an important mechanism of micro-particle transport due to temperature gradients in the surrounding medium.It has numerous applications,especially in the field of aerosol technology.This study has numerically investigated the thermophoretic deposition efficiency of particles in a laminar gas flow in a concentric annulus using the critical trajectory method.The governing equations are the momentum and energy equations for the gas and the particle equations of motion.The effects of the annulus size,particle diameter,the ratio of inner to outer radius of tube and wall temperature on the deposition efficiency were studied for both developing and fully-developed flows.Simulation results suggest that thermophoretic deposition increases by increasing thermal gradient,deposition distance,and the ratio of inner to outer radius,but decreases with increasing particle size.It has been found that by taking into account the effect of developing flow at the entrance region,higher deposition efficiency was obtained,than fully developed flow.

New generations of dihydropyridines for treatment of hypertension

Since the calcium channel blocker （CCB） has become one of the most prescribed agents for antihypertensive monotherapy in the world, this brief review will focus on the recent research and development of the dihydropyridine （DHP） CCB, addressing pharmacological mecha- nisms for the clinical efficacy of the third and fourth generations of the DHP CCBs, especially on their possible central mechanisms underlying lowering blood pressure.