Machine Vision Analysis of Characteristics and Image Information Base Construction for Hybrid Rice Seed

Incompletely closed glumes, germination on panicle and disease are three important factors causing poor seed quality of hybrid rice. To determine how many and which categories should be classified to meet the demand for seed in rice production, the effects of various degrees of incompletely closed glumes, germination on panicle and disease on germination percentage at the harvest and after storage for six months were studied by standard germination percentage test. Six categories of seeds with germ (germinated seeds), severe disease, incompletely closed glumes, spot disease, fine fissure and normal seeds were inspected and then treated separately. Images of the five hybrid rice seed (Jinyou 402, Shanyou 10, Zhongyou 27, Jiayou 99 and Ⅱ you 3207) were acquired with a self-developed machine vision system. Each image could be processed to get the feature values of seed region such as length, width, ratio of length to width, area, solidity and hue. Then all the images of normal seeds were calculated to draw the feature value ranges of each hybrid rice variety. Finally, an image information base that stores typical images and related feature values of each variety was established. This image information base can help us to identify the classification limit of characteristics, and provide the reference of the threshold selection. The management of large numbers of pictures and the addition of new varieties have been supported. The research laid a foundation for extracting image features of hybrid rice seed, which is a key approach to future quality inspection with machine vision.

Design for the simulation of space based information network

Ongoing research is described that is focused upon modelling the space base information network and simulating its behaviours： simulation of spaced based communications and networking project. Its objective is to demonstrate the feasibility of producing a tool that can provide a performance evaluation of various eonstellation access techniques and routing policies. The architecture and design of the simulation system are explored. The algorithm of data routing and instrument scheduling in this project is described. Besides these, the key methodologies of simulating the inter-satellite link features in the data transmissions are also discussed. The performance of both instrument scheduling algorithm and routing schemes is evaluated and analyzed through extensive simulations under a typical scenario.

A STUDY OF SOIL CONSERVATION MONITORING INFORMATION SYSTEM BASED ON REMOTELY SENSED DATA FOR A CATCHMENT ON THE LOESS PLATEAU

The Soil Conservation Monitorins Information System (SCMIS) presented in this paper is oriented to soil erosion control, resources exploitation, utilization, planning and management for a small watershed (about 10 sq. km.) on the Loess Plateau. It sums up Remote sensing (RS), Geographical Information System (GIS) and Expert System (ES) and consists of a integrated system. As a basic level information system of Loess Plateau, its perfection and psreading will bring about a great advance in resources exploitation and management of Loess Plateau.

AUTOMATIC SEGMENTATION OF VIDEO OBJECT PLANES IN MPEG-4 BASED ON SPATIO-TEMPORAL INFORMATION

Segmentation of semantic Video Object Planes (VOP's) from video sequence is a key to the standard MPEG-4 with content-based video coding. In this paper, the approach of automatic Segmentation of VOP's Based on Spatio-Temporal Information (SBSTI) is proposed.The proceeding results demonstrate the good performance of the algorithm.

An improved ISR-WV rumor propagation model based on multichannels with time delay and pulse vaccination

The rapid development of the Internet has broadened the channels of dissemination of information,it has also led to the rapid and widespread propagation of rumors,which can have a serious negative impact socially.In this paper,an improved ISR-WV rumor propagation model integrating multichannels is proposed by considering the system’s time delay,and the influence of different channels of propagation on the dynamic process is further analyzed.Moreover,the basic reproduction number R0,rumor-free equilibrium,and rumor-prevailing equilibrium,as well as their stability,are deduced.Then,an optimal control problem with pulse vaccination is designed.Finally,the validity of the model and theoretical results is verified by numerical simulations and a practical application.The results show that the rumor propagation threshold R0 is more sensitive to the rate of the propagation of the information base channel.The shorter the thinking timeτ_(1)required for the ignorant to react after obtaining the information,the larger the final scale of propagation.Under this condition,the time delayτ_(2)spent by a spreader in producing a video is negatively related to the final scale of the propagation;conversely,a longerτ_(1)implies that the person tends to more cognizant,which can suppress the spread of rumors.Under this condition,τ_(2)has little effect on the final scale of propagation.In addition,the results also prove that timely implementation of the pulse vaccination control strategy of popular science education can effectively control the propagation of rumors and reduce their negative impact.

The Quantitative Law of Network Information Growth

Based on the assumptions of ＂information transfer＂ and ＂information creation＂, this paper educes the multiplied growth mechanism of network information： that the gross quantity of network information （Im） is about n times as much as the quantity of real network information （Ir）. According to this theoretical model, we give a uniform explanation to all kinds of information growth models in existence, and put forward some proposals, such as ＂forbidding information transfer＂ and ＂building up the central information base＂, to control the repeated information flooding on the network and facilitate the full use of network information.

中医药领域信息化平台建设进展

[目的]回顾30年来中医药领域信息化研究及其应用情况,对研究热点和规律进行总结,为中医药领域信息化平台建设与高质量应用提供参考。[方法]检索中国知网(CNKI)和万方医学数据库(Wan Fang Medical Database),全面获取基于中医药领域信息化平台(数据库、平台、系统)建设与应用转化的研究文献,通过文献计量学和Cite-Space图谱软件对其研究特征及研究热点进行汇总和分析。[结果]共纳入文献683篇,其中基于“中医药系统、数据库、平台”构建研究274项;基于“系统、数据库、平台”的应用研究409项。研究涉及748个单位,参与研究发文量较靠前的单位为山东中医药大学、北京中医药大学和中国中医科学院广安门医院等。研究覆盖242部学术期刊,发文量呈上升趋势且热点延续性强。研究热点方面,文献发表主要来源于统计分析等应用型研究,如:大数据、中医传承辅助系统、古今医案云平台、冠心病、区块链等。[结论]近30年国内中医药领域的信息化平台建设相关研究数量明显提升、研究力度明显增大,对于研究主题的多样性和跨学科、跨团队合作的协同性仍需重点关注,以期中医药领域信息化平台建设与应用的高质量、快速发展。

以学生发展为中心的混合式教学模式改革——以信息科技与信息化课程为例

为进一步提高课程建设质量,满足新时代对人才的新需求,基于信息科技与信息化通识教育核心课程,坚持以学生发展为中心,以OBE理念为指导,立足通识,从大科学、大技术观视角,系统地对课程目标、教学设计、教学实施和课程考核进行线上线下混合式教学设计与教学实践。经过两轮实践表明,该教学模式提高了学生的课程学习热情和参与度,提升了学生的综合能力和素养,达到了预期目标。

生姜产业链物联网信息感知系统研究

为实现生姜产业链的深度信息化,构建了生姜产业链物联网信息感知系统。系统充分利用物联网透彻感知理念和方法,设计了生姜产业链种植、仓储、加工、冷链物流及销售等信息感知终端,实现了生姜产业链信息的无缝覆盖和自动采集。为便于产业链信息的现场查询与提交,开发了生姜产业链通用信息采集仪,采用J2EE架构构建了产业链信息管理平台,实现了产业链感知信息的有效管理。长期运行结果表明,感知系统信息采集全面准确,系统运行稳定可靠。

推进中国农业信息化发展的思路探讨

通过对国内外农业信息化发展现状的分析,以及对国外农业信息化发展令人瞩目的成就和国内农业信息技术研究与推广应用状况的概述,提出了中国农业信息化存在的主要问题是农业信息体系建设尚属起步阶段、农业信息资源开发利用不成熟、农业信息服务机制不健全。根据中国农业目前实际情况分析,指出了中国农业经济发展模式的最佳选择是信息化,农业信息化是中国农业发展的未来方向,强调实现中国农业信息化的迫切性和重要性以及并探讨了实现中国农业信息化的发展战略、技术路线。

中小型(公共)图书馆面向社会信息化的发展对策

随着信息时代的到来,中小型图书馆在信息化中面临挑战。本文分析了中小型图书馆的面临的现状,以及在信息化建设中面临的困境,并提出了中小型图书馆在信息化中发展的对策。

以构建综合教学资源共享平台创新育人环境

本文分析了网络资源建设和构建网络教学平台的重要性、迫切性,提出了构建网络教学综合资源共享平台的一种思路,并以创建一个中心实验室的综合资源平台为例,对以技术实现思想的问题进行了讨论,论述了综合资源共享平台既是为学生自主学习、研究性学习提供一种新环境,同时也将是保证优秀的网络教学资源在时间、内容、空间上实现真正开放的重要支撑的问题。

东北老工业基地信息化水平分析

在振兴东北老工业基地的过程中,信息化技术的应用将发挥重要的作用。目前,东北老工业基地的信息化水平具有信息化指数高、发展速度慢,与信息化高水平地区差距大的特点。为此,应抓紧在经济和社会发展的重要领域和关键环节率先应用信息技术,积极运用信息技术改造和提升传统产业,调整和改造东北等工业基地的落后局面,加快企业信息化的步伐。

物联网在现代农业试验基地中的应用探讨

基于信息化与物联网的概念、发展过程、应用现状,探讨了物联网在现代农业试验基地建设中的重要性,分析了当前试验基地物联网建设过程中面临的突出问题,对农业试验基地开展农业信息化建设提出了相应的对策,旨在提高现代农业试验基地物联网的建设水平,进一步推动我国农业信息化的进程。

基于医疗知识库的辅助诊疗系统

针对电子医疗信息日益增加而对其的组织利用率低的问题,提出了基于医疗知识库的辅助诊疗系统。首先,通过对医疗知识库中的疾病信息进行分词操作,建立倒排索引表;然后,计算输入的症状信息与相关疾病的相似度并进行排序,以作出诊断;其次,根据用户的反馈信息采用动态确定原有信息与反馈信息权重比的反馈查询方法进行优化诊断;最后,利用贝叶斯分类算法根据病例信息对进一步的检查方式作出推荐。实验结果表明,在所规定的统计策略下,初步诊断时系统的召回率达到95%,准确率达到85%,在优化诊断之后准确率达到95%。该系统以工具的形式给医疗工作者以提示,帮助提高医疗水平和质量。

东北老工业基地的调整改造必须走新型工业化道路

改革开放以来,东北老工业基地经济保持了良好的发展势头。但由于一系列原因,东北老工业基地经济始终未能摆脱传统的粗放型经济增长方式,产业结构升级缓慢,地区经济出现衰退,调整和改造的任务迫在眉睫。从产业结构优化、升级的角度来看,东北老工业基地的调整改造必须走"新型工业化道路"。

作业成本法产生与发展的宏观经济环境

在阐述现代制造业模式的基础上 ,分析了作业成本法对现代企业管理产生的巨大影响 ,同时 ,分析了作业成本法与国民经济信息化的辩证关系 ,并进一步探讨了作业成本法与价格、财政、产业调整的相互关系。研究结果认为 ,作业成本法不仅仅是企业会计中间接费用的一种分摊方法 ,它对宏观经济管理也将产生直接影响 ,同时 。

信息化战争条件下国民经济动员信息化建设

信息化战争对国民经济动员和动员信息化建设均提出了更新更高的要求。文章论述了信息化战争条件下国民经济动员呈现的新特点,分析了动员信息化建设的现状,提出了加强动员信息化建设的建议和措施。

医学院校信息化人才培养模式探讨

卫生体制改革与发展迫切需要加快卫生信息化建设，而医疗卫生信息化建设需要大量的既懂信息技术又具有一定医学知识和医院管理知识的复合型人才。医学院校计算机专业人才如何培养，如何定位，才能适应卫生信息化需求，是一个大的复杂的系统工程，本文对此作了初浅的探讨。

论制造业基地的信息化发展

制造业基地是一种具有一定特征的经济区域。它可以分为不同的层次,它的发展也有不同的阶段。在新科技革命和信息化的背景下,制造业基地的发展也走上信息化道路。无论是从全球的制造业强国竞争来看,还是从国内各世界级制造业基地发展目标的情况来看,信息化都成为它们增强自身竞争力,取得世界产业分工有利位置的重要手段。