O-200kPa气动控制信号检测系统的设计

为检测气动执行器常用控制信号0-200kPa气压,设计了基于MSP430单片机和压阻式压力传感器MPX2200的气压检测系统．阐述了检测系统的软硬件设计,给出了MPX2200恒流源电路和放大倍数可调的两级放大电路,介绍了软件设计中的标度变换、分段插值和中值滤波方法．该系统在电路设计上选用仪用放大器、单片机自带AD转换器,所用元器件少、功耗低、精度高,可广泛应用于智能化、低功耗化的气动执行机构及其元器件的设计中．     

植物多倍体的形成及应用研究综述

介绍了植物多倍体的含义及其在高等植物中的分布,综述了植物多倍体的类型、形成途径、诱导方法及其应用等方面的研究进展,展望了植物多倍体今后研究的发展趋势。     

三电压法测量硅钢片比铁损的误差分析

通过分析信号源稳定度、样品制备工艺、采样误差等因素对硅钢片比铁损测量精度的影响,编制了Matlab下的数据处理程序和相应的GUI用户界面。在该界面下针对上述几种条件下的测量结果进行数据处理,得到了最佳测量条件,简化了传统三电压法测量中复杂计算问题,使测量周期大大缩短。     

中职学校植保课程实践性教学的几个重要环节

加强实践性教学,提高学生的综合能力,以便适应毕业后从事本专业技术工作,是中职学校的首要任务.这是一个系统工程,经过多年来的教学实践,认为从课堂教学到生产实习,环环相扣的训练方法是行之有效的.     

储油罐的变位识别系统

利用积分法给出储油罐在变位时通过油位探针测定的油位高度来计算油罐内实际油量体积的公式,根据在油罐中加入或放出确定体积的油量,算出储油罐的纵向倾斜角度和横向倾斜角度,从而对储油罐的油位计量管理系统罐容表进行标定,可有效减小油位计量管理系统的绝对误差.     

广西水稻种业知识产权保护现状及发展对策

通过农业植物新品种、专利、地理标志等三方面分析广西水稻种业知识产权保护现状,发现广西水稻种业知识产权存在创造数量与质量不高、管理不够重视、运用效果不明显、保护效果待加强等问题。提出从六方面加强广西水稻种业知识产权保护,以促进广西水稻产业进一步发展:进行立体保护,全方位保护水稻种业知识产权;实行全程管理,提高知识产权保护与运用水平;提升专利质量,培育高价值核心专利;营造良好的知识产权保护与服务环境;加强农村知识产权教育,助力乡村振兴;以及加强种业"走出去"过程中的知识产权保护等。     

A network-based concept extraction for managing customer requests in a social media care context

Web 2.0 changed everyday life in many aspects, including the whole system that orbits around the purchase of products and services. This revolution necessarily involved also companies, because customers became increasingly demanding. The diffusion of social media platforms pushed customers to prefer this channel for quickly obtaining information and feedback about what they want to buy, as well as for asking help after the selling. In this framework, many organisations adopted a new way of providing assistance known as social customer care. A direct link to companies allows customers to obtain real-time solutions. In this paper, we introduce a new strategy for automatically managing the information listed in the requests that customers send to the social media accounts of companies. Our proposal relies on the use of network techniques for extracting high-level structures from texts, highlighting the different concepts expressed into the customers’ written requests. The texts can be then organised on the basis of this new emerging information. An application to the requests sent to the AppleSupport service on Twitter shows the effectiveness of the strategy.     

基于句子相似度的文档复制检测算法研究

提出一种基于句子相似度的文档复制检测技术，在抓住文档的全局特征的同时又兼顾文档的结构信息，克服以往检测算法两者不可兼顾的缺陷，提高检测精度。最后，给出该算法与其他算法检测结果的比较情况。实验证明，该算法是可行的。     

浅谈绿色植保服务与IPM技术应用

本文分析了农产品质量安全问题,主要是农药残留问题,从而提出绿色植保服务即推广生物综合治理(IPM)技术.     

A Comparison of Text-Based Methods for Detecting Duplication in Scanned Document Databases

This paper presents an experimental evaluation of several text-based methods for detecting duplication in scanned document databases using uncorrected OCR output. This task is made challenging both by the wide range of degradations printed documents can suffer, and by conflicting interpretations of what it means to be a duplicate. We report results for four sets of experiments exploring various aspects of the problem space. While the techniques studied are generally robust in the face of most types of OCR errors, there are nonetheless important differences which we identify and discuss in detail.