对基本实现农业机械化评价体系的探讨——以江苏省苏州市为例

阐述基本实现农业机械化应坚持的基本思想;明确了基本实现农业机械化的内涵、标志和评价指标体系建立的基本原则;初步构建了评价体系的基本框架。     

低分子量骨胶原肽酶解制备工艺优化和特性分析

酶解工艺参数不仅会影响畜禽骨蛋白的酶解效率,而且会改变骨胶原肽产物的肽分子量分布、氨基酸组成和微结构性能,从而影响其高值高效化利用。以制备均一性低分子量骨胶原肽为目的,以牛骨粉为研究对象,以水解度为主要评价指标,考察碱性蛋白酶、中性蛋白酶、复合蛋白酶和风味蛋白酶对牛骨粉的酶解效果,探究双酶分步酶解工艺、脂肪酶预处理的单独与组合应用对酶解效果的提升作用,选定最优的低分子量骨胶原肽制备工艺;结合酶解过程中各项指标的变化、产物表征分析和Person相关系数法分析不同复合酶解工艺对产物特性的影响及作用机制。研究发现：经脂肪酶预处理-碱性蛋白酶-复合蛋白酶酶解工艺制备的骨胶原肽产物具有最佳的理化性质,优化的工艺参数为：底物质量浓度为0.09 g/mL、初始pH值7.5的牛骨粉溶液加入碱性脂肪酶（加酶量0.08%）在40℃下反应4 h,再加入碱性蛋白酶（加酶量0.36 U/g）在60℃下反应5 h后,最后加入复合蛋白酶（加酶量0.36 U/g）在55℃下反应5 h,此时,水解度可达16.12%,总游离氨基酸含量可达171.571 mg/g,其M_w、M_w/...     

机电一体化“双元制”专业《简单机电系统安装与调试》教学过程探究

"双元制"是我国学习德国职业教育的一种模式,机电一体化"双元制"专业可以为制造业提供大量的优秀人才,因此要从具体课程入手,做好人才培养工作。《简单机电系统安装与调试》这门课程是机电一体化"双元制"专业在第5学期开设的一门重要课程,对其人才培养有重要影响。本文将从教学大纲要求、教学模式、教学项目的选择以及教学实施过程等4个方面阐述该课程的详细教学过程,其中笔者采用了新的"四步"教学法教学模式。实践表明:与传统教学模式相比,学生动手能力、分析问题以及解决问题能力明显提高。     

面向中小企业的PDM需求分析

众所周知,中小企业的核心竞争力是产品的研究和开发能力,这是企业可长期持续生存发展的根本能力。为此,结合中小企业的管理特点,分析了中小企业在信息化过程中存在的问题;说明了应用PDM技术是提高中小企业核心竞争能力的必要途径;阐述了中小企业对PDM系统的应用需求和性能要求;指出目前中小企业已具备了实施PDM技术的条件。     

An Improved Method of the Transient Waveform Analysis in Power Systems

The angular frequency and decaying constant of each copmonect for the transient waveform in power systems were obtained by using the discrete Fourier transform; the amplitude and phase angle were calculated in the linear curve fitting method. And all of the parameters obtained above were treated in an unified optimization by using the curve fitting optimization of the least square method of general nonlinear funcrion so as to get the results of waveform analysis. Two examples are included.     

Study on Regulation Scheme to evolution of Luxikou Waterway of Yangtze River

Luxikou River is one of shallow waterway in middle reach of Yangtze River.The navigational channal changes with the fluvial process of river. In the meanwhile,the shoals exist at the entrance of Zhigang and Zhonggang branch. It's difficult to maintain the waterway. The depth of waterway is kept upon 3.2 meters,and the carrying capacity of tank barge must be decreaed to pass through.For the demands of constructing the main channel of Yangtze River,the measements for stabilizing and improving must be carried out as soon as possible.     

Model About Aggregation and Spreading Effect Brought by the Lightrail

Many cities are planning to build up the lightrail in order to solve their traffic jam.We try to find a function to describe the going-out cost and analyse the character of this function.The conclusion can be reached that lighrail can make aggregation and spreading effect on the economic activity in the district along the lightrail transit line because the change of cost brought by the lightrail traffic system lead to redistribution of the product region. Synthetically considering factors which can impact this aggregation and spreading, via applying the method of AHP, we set up an evaluation system which can be used to measure the economic effect brought by the lighrail.     

Development of Assembly-Type RC Structure and Building Industrialization

Based on the analysis of the status of building construction in China, the development of Assembled Structure System (ASS) can solve not only the problems in construction, but also is the key for realization of building industrialization. On the basis of technique innovations, a study on the structural performance, construction method and precast production of ASS should be carried out to inherit the old one and overcome its demerits. The process reengineering should be done in the construction enterprise to promote the development of building industrialization.     

Enterprise Information Engineering Model and Its Integrated Support Environment

By analyzing the process of enterprise information engineering construction and intra relationship among information system requirement, business process modeling, application system constructing and project management, one of 4 meta model composed of requirement engineering, process engineering, application system engineering and support engineering is proposed for enterprise information engineering. The developments and applications of the business processes and its application systems are integrated into the same development space and application space. Basing on this, a prototype system composed of requirement modeling environment, business process modeling environment, application system modeling environment, and support engineering environment has been designed and built, which is used for supporting enterprise information engineering constructing. It is valued for the enterprise information engineering construction in our country.     

Customer Service Satisfaction Evaluation System and Method Viewed From Supply Chain Management

Based on experience in customer service evaluation,through the analysis of many factors affecting customer satisfaction calculation estimate, customer service evaluation rules as well as customer-oriented and supply chain partner-oriented methods are developed and discussed from the view of supply chain, besides, we construct two sets of customer satisfaction evaluation systems, in which we perform non-dimensional analysis on evaluation system to form single factor evaluation matrix after using improved AHP to determine each factor item's weighting ,utilizing fuzzy decision theory to construct evaluation model for integrated estimate. This evaluation method is scientific, round and objective with more stability and convienience in practical use.