基于移动通信的木材检尺码单信息处理系统

为解决因网络无法延伸到达林区作业现场和无法实时获取木材检尺数据问题,应用GSM手机短信技术构建适合于南方集体林区特点的县级森林采伐运输管理网络系统.着重分析手机短信检尺码单信息处理系统的组成、短信平台的特点与选择、信息编码的格式与计算方法,论述了系统软件设计方法、长短信处理技术、码单数据的短信格式和系统运行模式.系统经福建省将乐县应用,显著提高了森林采伐运输管理水平和工作效率,有广阔的推广前景.     

基于GPRS,SMS和卫星通讯的水情遥测系统通讯方案设计

在分析目前水情遥测系统通讯方式局限性的基础上,介绍了通用分组交换业务(GPRS)、短消息业务(SMS)和卫星通讯等通信方式的特点,设计了一套基于GPRS,SMS和卫星通讯的水情遥测系统通讯方案,并详细介绍了该方案在系统中的实现方法。     

入侵杂草小飞蓬和钻形紫菀种子风传扩散生物学特性研究

种子的风传扩散是菊科入侵杂草的主要扩散方式之一,植物自身的传播特性和外在环境因子决定了种子扩散格局。从种子释放高度、沉降速度、脱落行为等内在因子出发,研究了两种在我国广泛分布的典型菊科入侵种小飞蓬和钻形紫菀自身的传播特性与风传扩散特征的关系。结果表明,小飞蓬和钻形紫菀的沉降速度均较小,分别为41.4cm·s-1和30.7cm·s-1,在空中停留时间长,且种子的脱落方式为非随机脱落,脱落概率大致与风速的平方成正比;种子的释放高度在种群内部存在很大的差异,显著影响种子的扩散距离。相比而言,小飞蓬种子的沉降速度大、释放高度高、远距离扩散(>100m)的概率大,扩散距离更远。研究表明了植物自身的传播特性对种子风传扩散的重要性,也为其他菊科入侵杂草种子风传扩散的研究提供了科学依据。     

GSM技术在棉田水分监测中的应用

利用GSM无线通讯技术实时地采集棉田水分数据,然后将水分监测数据发送到集中监控中心,由上位机决策支持系统进行相应的数据处理,决策结果以GSM短消息方式发送到用户手机上,实现了水分信息的动态管理。     

基于嵌入式农业信息采集系统关键技术的研究

针对当前精准农业中实用型数据采集系统匮乏的问题,提出了一种基于嵌入式Linux系统,并结合GPS技术、GSM短消息服务(SMS)实现农业数据采集系统的基本结构和软硬件设计,重点分析了uClinux的移植、嵌入式系统、GPS模块和GSM模块的通信等关键技术,解决了农业信息采集问题,从而更好地为精准农业生产服务.     

基于GSM/SMS的省级金盾网络的可靠性设计与实现

分析了GSM/SMS传递信息的优点,研究了应用GSMModemME1203A模块进行了移动模块软件和硬件的设计与实现。针对当前监测系统故障时,检测信息不可返回、难于分离故障点的问题,提供了构建备份网络提高监测系统可靠性的解决方案。     

A COLOR IMAGE TERMINAL WITH SUBMARINE ACOUSTIC IMAGING

A color image terminal which can be used for submarine acoustic imaging system is introduced in this paper. Imaging signals, data rate above 375 KB/S, can be in real time processed in this system. It can give an insert processing of the imaging signals produced in both Modes C and B. The coordinate can be transformed quickly and in real time when Mode Bworks The luminace information can be turned into false color information by a color coder. All kinds of imaging parameters are displayed on the screen at the same time. The raster scan system is used for the image terminal. The capacity of the image memory is 512k Bit. The characters, parameters and synchronous control signals are given by a microcomputer TP-805.     

Breeding beans for resistance to terminal drought in the Lowland tropics

In the lowland regions of Latin America, a large proportion of beans are sown at the beginning of a dry season where a guaranteed terminal (end-of-season) drought will reduce yields. This study was undertaken to identify lines within two black bean recombinant inbred line (RIL) populations with resistance to terminal drought. The two RIL populations were developed from crosses between a drought resistant line, B98311 from Michigan, with TLP 19 and VAX 5, two lines from CIAT with improved disease resistance and adaptation to growing conditions in Latin America. The RIL populations were evaluated in experiments conducted in Zamorano, Honduras and Veracruz, Mexico under drought stress and well-watered (non-stress) treatments. Yields were reduced in each experiment by drought and the fungal pathogen, Macrophomina phaseolina. Drought stress, disease pressure and low yields contributed to high coefficients of variation (CV), which made it difficult to select superior lines. Selection was based on rank of geometric mean (GM) yield calculated from the yield in the stress and non-stress treatments. One RIL, L88-63 ranked first in GM yield at both locations. Subsequent testing in Honduras and Michigan confirmed the high yield potential and broad adaptation of L88-63. Breeding beans for drought resistance in lowland tropical environments should also include breeding for resistance to M. phaseolina. This revised version was published online in July 2006 with corrections to the Cover Date.     

Research on Multifunctional Information-interactive Terminal Based on uClinux

Based on the analysis of tendency of ICT (information interactive terminal), this paper presents a new embedded terminal which is multifunctional and understandable-MIIT (multifunctional information-interactive terminal based on uClinux) for the disadvantage of ICT, and expatiates the structure and illustration of hardware and software system of MIIT. The paper establishes the application system of MIIT containing the three parts: the collection of data on serial port, the given application program and keyboard, and it also ensures the realization of application system of MIIT and makes MIIT applied in new applications field.     

5种模型估算杜洛克猪的剩余采食量及与饲料效率等指标的相关分析

使用SPSS软件统计分析2017—2019年在农业农村部种猪质量监督检验测试中心(广州)集中测定的359头杜洛克种猪生长性能测定成绩,通过5种模型估算杜洛克猪剩余采食量(RFI)与饲料效率、背膘厚、眼肌面积、日增重等生长指标的相关性,根据RFI高低分组进行了相关分析。发现5种模型估算的RFI均与饲料效率有极显著相关(P<0.01),都可用来估测杜洛克种猪饲料效率;5种模型的RFI与背膘厚、眼肌面积的关系表现出两种相反的趋势:a、b、d、e模型中,低RFI组背膘更厚;c模型中,低RFI组背膘更薄,所以可能低RFI组瘦肉率更低。同时c、d、e模型低RFI组表现出与生长速度更慢(P<0.05)、c、d模型低RFI组表现出日增重更低的趋势(P<0.05)。其呈现的规律提示可能低RFI杜洛克猪虽然饲料效率较好,但生长会更慢、瘦肉率会更低。所以选择RFI模型估算杜洛克种猪瘦肉率、生长速度相关指标时,需要考虑更多生产实际需求。