Index System Incubation Performance of Science and Technology Enterprise Incubator

The business incubator comes from the management model that provides environment,service for science and technology small enterprises to accelerates their growth.Incubation performance is a main evaluation criterion to choose incubator for venture investment enterprises.The paper constructs incubation performance evaluation system of science and technology business incubator,and establishes a method model to calculate weigh based on Analytical Hierarchy Process(AHP).The conclusion is that the AHP is applied well to the structure the incubation performance index system of science and technology enterprise Incubator index system based on an example.     

新型负压渗灌技术对农田土壤水分精准控制应用

针对节水微灌技术发展,研发出一种新型的负压渗灌系统。新系统将常规的环形管输水改造为直路单向输水,通过控制计量水箱结构和调压器实现了植物对水分连续自动获取,改变了传统的间歇灌溉理念,提高了灌溉精准和自动化程度,同时显著提高了水分利用效率,实现了作物自身需水情况与土壤水分平衡精准供水,促进了水分高效精准利用。负压自动补给灌溉具备节水、节能和保护农业生态环境、保护土地等农业自然资源等优点,从而实现土壤水分的精确和持续控制,使省工、省力、规模化、高效率和高科技的现代农业技术成为现实,彻底颠覆了传统滴灌方式的灌水理念,由人为机械供水改为由土壤水势实时平衡自动、实时、科学调控灌水量,具有广泛的开发前景。     

应用STM32系统设计基于物联网的农业小气候观测传感器

为实现分布式测量的农业小气候观测系统设计,需要设计一种体积小、成本相对较低的观测传感器。设计中应用STM32系统,采用现代电子设计技术及智能化的软硬件开发,实现传感器的设计制造。结果表明,应用STM32系统进行主控单元硬件设计,及STM32系统自带的标准库函数开发固化软件,不仅功能上能够满足要求,而且设计及生产成本均较低。设计完成的一体式传感器不仅能够更好地满足农业小气候观测需求,而且较集中控制方式的农业小气候观测系统有安装维护上的优势,其体积小,而且“全无线”设计,不会影响农事活动。基于物联网的智能化传感器设计为实现分布式测量打下了基础。     

Nonlinearity of Electronic Throttle and Its Control

This paper introduces the development of the electronic throttle control system (ETCS) , the structure and the principle of the system are also involved. After analyzing the nonlinearity problem existing in the mechanical structure of the system, a mathematical model of the ETCS is built up. Then three controllers (PID controller, Fuzzy controller, sliding mode controller) were designed and simulated in the matlab simulink. The result indicates that the PID controller has an overshoot,but the Fuzzy controller and the sliding mode controller can settle the nonlinearity problem better.     

Temperature Control System of the Polish Liquid on Cool Machining Optics Components

In order to improve productiveness, the liquid temperature should be maken arrive predetermine value as short time as impossible, and controlling accuracy should be ensured at the same time. For the purpose, an optimum scheme of dynamic heating in all process is presented. The power of electronic stove is chosen according began and end temperature,volume of the heated object, for which the paper established the optimum control model of dynamic heating. Based on the model, the system has been manufactured. The experimental results show that the system is better in fast temperature rising,small over adjusting and high precision.     

基于ZigBee的工厂化水产养殖溶解氧在线监控系统设计的研究

为了采用分散控制方式对工厂化水产养殖溶解氧进行监控,提出了基于ZigBee的溶解氧在线监控系统。系统采用集散控制模式,分为终端节点、路由节点和网关节点以及监控中心4个层次。终端节点采集养殖池中溶氧量,然后通过路由节点汇聚到网关节点,并根据溶氧量对与之连接的增氧机进行控制。网关节点将所有终端节点数据传输给监控中心,并接收监控中心的控制指令,进而通过各终端节点控制增氧机。同时,监控中心对数据进行存储、统计和分析,并产生控制指令。ZigBee节点采用CC2430作为核心芯片,使用ZigBee2006协议栈实现无线网络节点之间的通信。结果表明：该系统稳定性较好,部署灵活、容易扩展,满足了工厂化水产养殖的要求。实现了对溶解氧的在线实时监测及对增氧机的有效控制,降低了养殖成本。     

悬挂式小型液压植树挖穴机关键部件的设计计算

为了满足植树的需要,研制了自动化程度较高的液压微型挖穴机,该机可由8.82~13.23kW的拖拉机悬挂,液压机构控制升降,主要由机架、液压系统、发动机、升降臂、挖穴钻头等部件组成,具有结构简单、机动灵活、自动化程度高、安全可靠、经济实惠等特点。基于机械设计理论,设计了挖穴机的钻头、液压系统等关键部件,研究了微型液压植树挖穴机关键部件的设计。     

Research on Cooperative Design Network Security Based on IP-VPN

As the important method and instrument of agile manufacture,the technology of distributed collaborative design and manufacturing has become the hotspot of manufacturing. The basic concept and key technologies of IP_VPN are introduced in this paper,and a collaborative design network model based on IP_VPN is presented. Distributed collaborative design is a multi_user,multitask involved system, which is consisted of lots of collaborative processs,so the network security is the key of distributed collaborative design. We research on the security of collaborative design network based on IP_VPN, hence get a conclusion:we can construct an economical?practical and secure collaborative design network system by the application of data encryption,user authentication and access control based on the role,etc.     

Adaptive Inverse Control for Feed Water and Superheated Steam Temperature of Supercritical Pressure Boiler

An adaptive inverse control method for feed water and superheated steam temperature of supercritical pressure boiler is investigated. Through the analysis of the boiler system ,s dynamic characteristics, the input vector structure of inverse dynamics model of feed water and superheated steam temperature is constructed. The adaptive inverse control system is realized through on-line identification of inverse dynamic model with recursive least squares support vector machine. In the control process, the demand for feed water and spray water flow to the outlet steam temperature and micro-superheated steam temperature is considered to realize the integrated control of feed water and superheated steam temperature. Simulation results show that this control system has good control performance and adaptability and can void the repeated oscillation phenomena of control variables which appear in present two section control system.     

A power distributed computing system model based on services-oriented architecture

Process communication based power distributed computing model satisfies the demand on real time monitoring and analysis for the economical operation of power grid based on power distributed computation methods, but there are some problems on complexity in common basic functions development and lack of system extendibility. An extendable services-oriented power distributed computation system model is designed and implemented. Software design patterns are applied to design low coupling and extendable system framework. Windows Communication Foundation (WCF) technology is used to implement the services-oriented distributed data communication functions. Windows Workflow Foundation (WWF) technology is used to design the business logic of power distributed computation visually. Data integration functions are implemented by combining the ADO.NET technology. The services-oriented system architecture enhances the integration ability and extendibility. The use of WCF and WWF technology reduces the complexity of the system development.     

Design and Realization of Reusable Electronic Business Based System

This paper brings forward a design and realization of electronic business based system.This system provides a set of application integrated service platform and user portal for the development,running and management of electronic business,based on the standard J2EE.This system also provides a strong,healthy and extendable technical frame for the business application in network environment,which would help the enterprise to realize business process optimization more easily and provides the technical frame for various application integration.     

黑龙江省旅游业的市场绩效分析

为了研究黑龙江省市场绩效问题,通过学习和研读大量相关文献,归纳总结DEA模型在各行业市场绩效方面的运用。在此基础上,首先,采用SCP理论针对黑龙江省旅游业的市场结构、市场行为和市场绩效做了现状的分析;其次,通过运用DEA数学包络方法,把整个黑龙江省旅行社作为决策单元,把旅行社的固定资产、从业人数、企业数作为投入指标,营业收入、营业税金及附加作为产出指标,模型分析输出结果。再次,通过对输出结果中的综合技术指标、纯技术效率指标、规模效率指标这3类指标的分析,得出黑龙江省旅游业的市场绩效不高的结论。最后,针对黑龙江省旅游业的市场绩效不高、企业的行为不规范、旅游业的发展还不够完善等问题,为黑龙江省旅游业的发展提出几点建议。     

AN EXPERT TYPE CONTROLLER FOR INDUSTRIAL PROCESS

In this paper an expert system concept in AI is introduced to the industrial process control. Specific structures and features of expert control system are discussed. An expert controller directly applicable to industrial process is designed. The simulation of control system indicates that the expert controller has strong information precssing capability and versatile control strategies with desirable control performance. Thus, expert control approach is an effective means towards the realization of intelligent Control.     

粮仓智能通风控制系统

综合了当今先进的仓储管理技术、电子技术、计算机网络技术、人工智能,通讯技术及防腐防雷技术为一体,设计一套粮仓智能通风控制系统,以实现在外部条件适宜的情况下对粮仓进行通风,达到除热、调湿等目的,进而有效控制粮仓的储粮环境,从而达到安全储粮的目的.     

Development a Coil Compactor used in High Temperature

材料和方法 1.1试验材料 　　荔枝果实采自武鸣县府城镇大同村陶蓬德果场，品种为新丰黑叶，果实成熟度为 9成半；龙眼果实采自武鸣县城东镇大同村蒙桂辅果场，品种为石硖、储良，果实成熟度分别为 8成半和 8成。 1.2采前处理 　　荔枝采收前即 2000年 6月 15日和 6月 28日分别     

多个数值预报产品对山西3次强降水过程预报性能的对比分析

为更好地释用数值模式的预报产品,采用客观分析和ETS评分方法,运用T639-thin模式、ECMWF-thin模式、Japan_thin模式及NECP模式对2014年7月发生在山西的3次降水过程的预报性能进行了效果检验和对比分析。分析结果表明：4家模式对欧亚大陆中高纬环流形式以及地面系统的调整和演变均有较强的预报能力;4家数值模式预报产品基本能把握雨带的走向,但对强降水过程中降水强度的模拟与实况相比偏差较大,而且对强降水中心的预报稳定性也较差;对于ETS评分,NECP模式的评分在3次过程中均较高,并且不同数值模式的24 h时效预报效果要优于其他预报时效。总体来看,对于环流形式的演变,EC模式模拟效果是最好的,其次是NECP模式,T639模式和日本模式次之;对于降水量级以及落区的预报,NECP模式预报较准确,具有较高的参考价值,其次是EC模式,而T639模式和日本模式预报的稳定性较差。     

Design of Automobile-inertia-brake-testing-system Based on Electrical-inertia

The traditional Automobile-inertia -brake-testing-system adopts the Mechanical Inertia pan to imitate automobile the Moving Inertia. This kind of system volume is bigger than new one, more difficult in inertia adjusting, and lower in automation degree. Aiming at the problems, this paper puts forward the innovative design of Automobile-inertia-brake-testing-system based on electrical inertia. The mathematic model of the Mechanical Inertia is analyzed. To use the algorithm to control motor, the authors make the output inertia generated by the controlled motor can imitate the Mechanical Inertia, then apply electrical inertia to replace Mechanical Inertia .The simulation result shows that the design idea is correct and feasible, stronger in system rubustness, lower in cost, more accurate in control quality, and higher in automation level.     

1990~2015年四川省茶叶生产空间演变格局及特征研究

为加快四川省茶产业区域化布局、专业化生产,推动茶产业发展,以1990—2015 年茶叶生产数据为基础,采用重心模型和ESDA方法,对四川省茶叶生产重心演变轨迹和空间格局进行分析。结果表明：（1）茶叶生产发展迅速,已经形成了川南、川西、川东北3 个主要产区。（2）四川省茶园面积重心迁移较小,重心整体向西南方向迁移。（3）四川茶园全局Moran’s I 指数在0.35~0.457,具有显著的正向空间自相关,呈现出高度的空间集聚特征。（4）在局部上,H-H象限单元主要是地处乌蒙山区、邛崃山区、秦巴山区的最适宜区,L-L 象限单元大多属于川西北高原、川中丘陵区的不适宜区或低适宜区。2000 年以后,川东北产区集聚趋势的显著性降低,川南产区、川西产区始终保持着显著的聚集趋势。四川茶叶生产格局是以自然资源禀赋为主导的作物生理适宜性格局,在后期的发展过程中,产业规模、龙头企业、区域品牌、替代产业、扶持政策等因素成为四川茶叶生产空间演化的主要塑造力量。     

Study on Single-chip Computer Control Systems in Miniature Water Works

In order to enhance automation and to design low price and performance reliable control systems for the miniature water works, the single-chip computer control system was adopted to control the work. The single chip computer control system in the miniature water works, the principle of the hardware and a part of software block diagram were discussed in this paper. Finally, the data acquisition and control network were introduced.