项目驱动法在高职模具设计课程教学中应用思考

为适应现代化的教学发展趋势,教师必须掌握多样化的教学模式。文章就项目驱动法在高职模具设计课程教学中的应用进行探讨,高职模具设计课程教学应当坚持工学结合,以项目为导向的人才培养模式,培养出具备较强技术性的应用人才。     

行动导向教学法在PLC教学中的初探

行动导向教学法不是指某一具体的教学方法,而是由一系列教学方法和技术组成的。在PLC教学中运用了任务驱动教学的教学方法,充分调动了学生的积极性,激发了学生的学习兴趣,培养学生自主探究、分析问题、解决问题的能力,将理论知识运用于实践的能力以及合作能力。     

本科课程《数控机床实训》教学改革与实践

在数控实训教学中,教师要利用现有的教学设备,按照生产模式,在数控加工实训中开展行动导向与任务驱动的教学模式,让学生在实践操作中对工艺设计、加工步骤及现代数控技术有更深刻的了解。本文对本科课程《数控机床实训》教学改革与实践展开了探讨,提出了实践教学环节改革的思路。希望能对学生提高学习兴趣,培养创新精神,提高学生工程实践素质有所帮助。     

基于德国行动导向的高职实训课程“六步法”教学设计研究

基于德国职业教育行动导向的课程教学作为当前引领世界的职业教育理念,通过以行动导向为引导,提高学生的关键能力和综合素质,是实现由知识传授向技能传授的重要教学改革。行动导向"六步法"的课程教学设计更好地实现了"教学过程与生产过程"对接,有利于学生的专业能力和社会方法能力的培养,提高了专业人才培养的质量。     

行动导向教学法在“机械设计基础”课程中的应用

行动导向教学法强调对学习者实践能力的激发,以使其获得更强的学习行动能力。本文阐述了行动导向教学法的内涵,以高职"机械设计基础"课程为例,从创设行动导向情境,激发学生参与兴趣;关注行动流程设计,引导学生发挥长项;进行学习效果评估,优化导向教学方案三方面分析了行动导向教学法的具体应用,并提出了行动导向教学法有效推行的举措,仅供参考。     

价值引领融入高职机电类专业课程的策略研究

全面推进课程思政建设,不仅应该牢牢把握课程建设“主战场”与课堂教学“主渠道”,而且要寓价值观引导于知识传授和能力培养之中,并在专业课程教学中充分挖掘民族文化、先进技术、工匠精神的教学价值。课题组针对高职学生的职业需求和情感认知规律,创建了融入价值引领元素的多元化、递进式、全程性的课程体系,通过行动导向教学法塑造学生的专注度和责任感,并采用线上线下混合教学模式、任务驱动法等策略,培养具备爱国情怀、文化自信、高尚品格的德技并修的一线准工匠。     

基于行动导向理念的《车身电控技术》信息化课堂探索

通过论述当前高职院校汽车专业课堂存在的问题及解决思路,介绍了行动导向教学理念,以《车身电控技术》中的"汽车电动车窗故障的检修"任务为例,按照行动导向教学理念中的"六步教学法"进行了信息化课堂的探索,并进行了教学效果分析。     

模具设计与制造专业项目化实训教学的设计与实践

项目化实训教学是一种以实践为导向,将理论与实际相结合的教学模式,具有实践性、发展性和开放性特征。在模具设计与制造专业实训中引入项目化教学理念,并把握好教学设计、实施、评价等关键环节的要点,有利于全面提升学生的专业技能水平,提高学生的综合素质和项目实践能力,保证专业实训效果。     

“引导文法”在教学评价中的应用分析与实例

针对职业能力的培养,在“以行动为导向”的教学理念下,将“引导文”职业教学法运用到教学评价环节,通过引导文的设计,将学习情境中的素质目标、知识目标与技能目标细化成学生完成行动任务的指南,并通过“引导文”指引,使学生在资讯—决策—计划—实施—检查—评价等教学环节中不断强化教学目标,为教法改革探索途径。     

任务驱动法在数控车床一体化教学中的应用

本文主要针对任务驱动法在数控车床一体化教学中的应用进行分析,提出了相应的思考,以期为有关的研究人士带来借鉴与参考,提高数控车床一体化教学水平,提升学生的实践技能水平。     

Overland water and salt flows in a set of rice paddies

Cultivation of paddy rice in semiarid areas of the world faces problems related to water scarcity. This paper aims at characterizing water use in a set of paddies located in the central Ebro basin of Spain using experimentation and computer simulation. A commercial field with six interconnected paddies, with a total area of 5.31 ha, was instrumented to measure discharge and water quality at the inflow and at the runoff outlet. The soil was classified as a Typic Calcixerept, and was characterized by a mild salinity (2.5 dS m⁻¹) and an infiltration rate of 5.8 mm day⁻¹. The evolution of flow depth at all paddies was recorded. Data from the 2002 rice-growing season was elaborated using a mass balance approach to estimate the infiltration rate and the evolution of discharge between paddies. Seasonal crop evapotranspiration, estimated with the surface renewal method, was 731 mm (5.1 mm day⁻¹), very similar to that of other summer cereals grown in the area, like corn. The irrigation input was 1874 mm, deep percolation was 830 mm and surface runoff was 372 mm. Irrigation efficiency was estimated as 41%. The quality of surface runoff water was slightly degraded due to evapoconcentration and to the contact with the soil. During the period 2001–2003, the electrical conductivity of surface runoff water was 54% higher than that of irrigation water. However, the runoff water was suitable for irrigation. A mechanistic mass balance model of inter-paddy water flow permitted to conclude that improvements in irrigation efficiency cannot be easily obtained in the experimental conditions. Since deep percolation losses more than double surface runoff losses, a reduction in irrigation discharge would not have much room for efficiency improvement. Simulations also showed that rice irrigation performance was not negatively affected by the fluctuating inflow hydrograph. These hydrographs are typical of turnouts located at the tail end of tertiary irrigation ditches. In fact, these are the sites where rice has been historically cultivated in the study area, since local soils are often saline-sodic and can only grow paddy rice taking advantage of the low salinity of the irrigation water. The low infiltration rate characteristic of these saline-sodic soils (an experimental value of 3.2 mm day⁻¹ was obtained) combined with a reduced irrigation discharge resulted in a simulated irrigation efficiency of 60%. Paddy rice irrigation efficiency can attain reasonable values in the local saline-sodic soils, where the infiltration rate is clearly smaller than the average daily rice evapotranspiration.     

瓦房店市水果生产标准化发展研究

瓦房店市是我国重要的水果生产基地,在国内水果生产领域占有重要地位。随着水果市场化的不断深入,如何满足和适应国内外市场需求成为瓦房店市水果生产的关键问题。从瓦房店市水果生产实际出发,阐述了实施水果生产标准化的必要性,提出了发展水果生产标准化的具体措施。     

金谷子耐旱TG118引种试种及推广应用

对引进的谷子新品种金谷子耐旱TG118进行品种比较试验和多点试种。结果表明：该品种抗旱、耐瘠、适应性强,稳产、高产、抗病抗风抗倒伏强,品质优良,粮草兼用,种植简单,省工易管;一般产量在6000kg/hm2以上,比当地主栽品种增产20%以上。最高产量达9450kg/hm2,适于在辽西北地区推广应用。     

对《种子法》存在问题的探讨

《种子法》是我国种植业第一部法律。自实施以来,为依法加强种子管理提供了有力的法律支撑,促进我国种子产业发生翻天覆地的变化。但随着依法管理工作的深入和种子产业的快速发展,《种子法》及配套规章的一些问题逐步显现出来。对《种子法》及配套规章存在的问题进行深入分析,对需要进一步补充的章节以及需要调整的内容进行深入探讨,以求更加完善和明确。     

Review of the Egyptian experience in implementing land drainage projects

About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered.     

和谐社会理论建设的几点哲学思考

在新世纪,面对机遇和挑战,党的十六大把“社会更加和谐”作为全面建设更高水平的小康社会的一个重要目标。中国人素有社会和谐的理想;西方人自古也向往社会和谐;借鉴东西方两种和谐社会思想的经验、教训,构建社会主义和谐社会理论。     

A European irrigation map for spatially distributed agricultural modelling

We present a pan-European irrigation map based on regional European statistics, a European land use map and a global irrigation map. The map provides spatial information on the distribution of irrigated areas per crop type which allows determining irrigated areas at the level of spatial modelling units. The map is a requirement for a European scale assessment of the impacts of irrigated agriculture on water resources based on spatially distributed modelling of crop growth and water balance. The irrigation map was compiled in a two step procedure. First, irrigated areas were distributed to potentially irrigated crops at a regional level (European statistical regions NUTS3), combining Farm Structure Survey (FSS) data on irrigated area, crop-specific irrigated area for crops whenever available, and total crop area. Second, crop-specific irrigated area was distributed within each statistical region based on the crop distribution given in our land use map. A global map of irrigated areas with a 5′ resolution was used to further constrain the distribution within each NUTS3 based on the density of irrigated areas. The constrained distribution of irrigated areas as taken from statistics to a high resolution dataset enables us to estimate irrigated areas for various spatial entities, including administrative, natural and artificial units, providing a reasonable input scenario for large-scale distributed modelling applications. The dataset bridges a gap between global datasets and detailed regional data on the distribution of irrigated areas and provides information for various assessments and modelling applications.     

粉质仪和拉伸仪在面粉生产中的应用

在介绍粉质仪和拉伸仪结构和原理的基础上,探讨了粉质曲线中吸水率、形成时间、稳定时间、弱化度和评价值等指标与面粉品质的关系,以及如何根据拉伸曲线中面团最大拉伸阻力、延伸度和拉伸曲线面积等指标来评价面团品质,并结合生产实际,概述了粉质仪和拉伸仪在面粉生产中的作用。     

农村信息化服务的现状及建设措施

分析当前我国农村信息化服务的现状,提出加强农村信息化服务的新举措。     

车辆ABS控制算法的研究及探讨

对现代汽车的ABS控制算法作了一些简单的介绍,同时指出了它们的一些缺陷,相应地提出了几种对ABS的其它控制方法并加以探讨,其中着重论述了ABS门限值控制算法中参考车速的确定方法和基于附着系数的控制算法。