THE CONTROL OF HYDATID DISEASE IN TASMANIA

SUMMARY: The program for reduction of human incidence of hydatid disease in Tasmania is described. The program has been in progress since 1965. It is based on intensive education, directed particularly at owners of infested dogs.
Results up to 30th June, 1978, are presented. Prevalence in dogs has been reduced from 12.66% to 0.22%. Prevalence in young sheep has fallen from about 15% to 0.05%, and in aged sheep from over 50% to 3.4%. The incidence in man has fallen, although the extent of the fall is difficult to quantify because of the small number of human cases. It is suggested that new infestations of man may have ceased by about 1970.
The implications of the Tasmanian program for other Australian states are briefly discussed.     

THE TOXICITY AND EFFICIENCY OF ARECOLINE HYDROBROMIDE IN THE TASMANIAN HYDATID CONTROL PROGRAM

SUMMARY Results on the efficiency and toxicity of arecoline hydrobromide during the first 11 years of the hydatid limitation program in Tasmania are presented. A satisfactory mucous purge was obtained from about 80% of dogs when arecoline was used at 3.25 mg/kg and from about 75% when the dose rate was reduced to 1.62 mg/kg of body weight. Arecoline is considered to have a low efficiency in detecting tapeworm infection in individual dogs, but is valuable as a diagnostic aid in groups of dogs. Toxicity was seen as acute cardiac collapse in about 5 dogs per 1000 dosed. Deaths followed in 1 dog in about 9,500.     

基于WebGIS的《中国草业开发与生态建设专家系统》的开发

参照软件工程的思想详细论述了基于WebGIS的《中国草业开发与生态建设专家系统》开发的过程、设计实现的技术途径,并对其经验和不足进行总结,以期为3S技术及计算机网络技术具体应用于草业与生态建设的研究提供参考.     

基于MapGIS和植被数量指标的啮齿动物群落模拟专家系统的设计与实现

选择鼠害频发的阿拉善荒漠区分布面积较大的红砂十泡泡刺生境、红砂十杂类草生境和白刺生境,以夹日法记录三种生境中啮齿动物种群相对数量,利用啮齿动物种群相对数量与荒漠区灌木和草本植物之间的依存关系建立专家模拟系统,分析三种生境的主要害鼠子午沙鼠、三趾跳鼠和小毛足鼠种群相对数量与植物群落因子间的动态关系,并以MapGIS为地理...     

青海省食用菌产业发展对策

通过对青海食用菌生产现状及存在的问题分析,提出了发展食用菌生产的具体措施。     

关于建立农业生态环境综合评价专家系统的构想

农业生态环境评价是对农业进行综合布局的一项十分重要的原则依据。然而,对农业生态环境作出评价又是非常复杂且艰难的工作。所以,建立农业生态环境评价的专家系统是很必要的。本文表明了作者建立农业生态环境评价专家系统的构想,并且展示了作者们设计出的专家系统的基本结构及其功能。     

网络版蚕病诊断与防治专家系统设计

为普及家蚕病害的基础知识,辅助提高蚕病诊断的准确率和蚕病防治技术水平,采用微软成熟的IIS+ASP+ACCESS技术建立了基于Internet的包含19种主要家蚕病害在内的诊断与防治专家系统(http:∥211.90.162.131:8099/)。该系统包括蚕病基本知识、识别与诊断知识、发病规律与防治知识、辅助诊断系统以及咨询与影像系统。计算机模糊判断法是辅助诊断系统的核心模块,该模块通过将专家经验转化为可供计算的模式概率值,建立数据库,即可从已知的病征(事实、证据)出发,采用模糊产生式诊断规则给出模糊断言的最大值作为诊断结果,并自动提出相应的防治措施。     

OF THE LOWER FORELIMB OF THE HORSE

This study uses computed tomography and computer aided design software (I-DEAS(tm)) for the development of a three-dimensional electronic solids model of the lower limb of the horse. Data from two millimeter transverse contiguous slices of the distal forelimb of a yearling horse were acquired from a computed tomographic scanner and then transferred to a computer system via magnetic tape. Outline of the bony tissue for each scan slice was first obtained with a feature extraction algorithm. A solids model for each skeletal segment of the specimen was then reconstructed with I-DEAS(tm) and subsequently displayed with various graphics options. The reconstructed electronic solids model would be useful for the study of 3D joint mechanics and finite element analysis of the bony structures, as well as for diagnostic purposes providing CT images could be obtained antemortem.     

红三叶栽培管理专家系统构建

本文介绍了红三叶(Trifolium pratense L.)栽培管理专家系统的设计思路与结构体系.该系统以地理信息系统(GIS)和数据库管理系统为开发平台,建立了以草地资源环境综合信息、红三叶试验观测数据等为基础的数据库,并构建相关模型,实现在我国南方山区,红三叶品种选择、播种、灌溉、施肥、刈割利用等栽培技术的决策;同时对不同管理措施下红三叶生长情景进行预测,并提供相应的目标管理决策建议.该系统有红三叶基本信息、草地资源环境综合信息数据与模型、红三叶栽培技术决策、红三叶生长情景预测与目标管理决策4个模块.通过系统运行,可实现红三叶栽培管理信息的查询、栽培技术的智能决策,以及红三叶生产情景预测和目标管理的科学决策,为用户提供咨询服务.