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81.
数字林业建设强调信息的数字化和资源的共享。根据数字林业建设的基本思想,分析数字林业的体系结构,提出了工作流在数字林业体系结构中的应用及优势。 相似文献
82.
顺德农业数字电视频道系统,包括农业政务、科技、市场信息的文本、图片、流媒体视频信息点播,通过手机与电视双向互动的农业供求即时通。该系统具有信息到户、操作便利、随时查看、随意选择、更新迅速、双向互动的先进性,易于在沿海发达地区的农村基层推广普及。从根本上解决农业信息服务的“最后一公里”问题。文章还介绍了目前基层农村的农业信息服务现状、缺陷,也介绍了推广新系统将带来的社会和经济效益。 相似文献
83.
A new surgical approach to the infected fetlock joint is described in two cattle suffering from septic tenosynovitis of the lateral digital flexor tendon sheaths of the right lateral hind-digits with concurrent septic serofibrinous arthritis of the adjoining fetlock joints, caused by penetrating wounds. In both patients, the infected sheaths were opened and the superficial and deep digital flexor tendons were removed. Intraoperatively, a small entry through the fetlock joint capsule was detected, directly distal to the lateral proximal sesamoid bone. The tract was surgically enlarged and a second approach into the plantar fetlock joint pouch was created proximally by making a 3 cm long and 0.5 cm wide incision between the two lateral suspensory ligament branches. This allowed easy access to the plantar joint pouch, removal of fibrin clots and an effective joint lavage using 5L of sterile saline solution. The incisions of the fetlock joint capsules remained unsutured and were drained using soft polyurethane foam to preclude premature closure. The tendon sheath wounds remained unsutured. In both patients, the digital flexor tendon sheath and the fetlock joint were lavaged daily for the following three days. The infection was eliminated in both cattle and both fully recovered without residual lameness. 相似文献
84.
随着我国数字农业研究与建设的深化,数字草地的研究与建设也迫在眉睫.开展我国数字草地建设不仅是数字农业发展的需要,而且也是草业科技创新之急需.为此,主要从六个方面讨论了我国数字草地建设(1)建设的必要性;(2)发展数字草地的可能性;(3)建设的指导思想、基本原则和目标;(4)数字草地建设体系结构;(5)数字草地建设的内容;(6)数字草地建设的保障措施. 相似文献
85.
Drought damage in the park forests of the city of Helsinki 总被引:1,自引:0,他引:1
Markus Holopainen Olli Leino Hannu Kmri Mervi Talvitie 《Urban Forestry & Urban Greening》2006,4(2):75-83
During spring and summer 2003 severe drought-caused damage was observed in the park forests of the city of Helsinki; especially in barren site pine and spruce stands. The objectives of this study were to map and document the extent of the damage through the use of existing geographical information, digital aerial photography and field surveys and to examine the feasibility of assessing drought damage by visual interpretation of digital aerial photography. Our aim was also to assess the reasons for drought damage in Helsinki city park forests using geographic information system (GIS) analyses of existing interpretative and geographical data, i.e. digital aerial photographs, rainfall statistics and the compartmentwise GIS database of the park forest site and soil types.The total amount of area falling into serious damage classes represented approximately 25 ha (the total forested area in Helsinki is about 3700 ha). A majority of these areas were located on rocky sites having low stem volumes. The total proportion of damaged stock volume was estimated as 17 300 m3, which is 3.3% of the total stock volume in the study area. An accuracy assessment showed that visual interpretation of digital aerial photos is an excellent tool for assessing drought damage. The mean estimation error was 0.7 classes, and errors comprising 2 classes were found in all test grids. The overall correct percentage of photointerpretation was 46%, and estimation was unbiased (kappa 0.264). The forest site and soil type together with the tree species on site showed the greatest correlation with drought damage. The drier and more barren the site, the more likely that damage will occur. Roadside forests were in better condition than areas located further off the roads. Hills clearly impacted the condition of the trees through soil type and flow. 相似文献
86.
"沟域经济"是从北京市门头沟区提出的一个新农村建设的新思路,对解决北京市的山区农村建设发展有巨大的推进作用。其中的"数字沟域"建设在中有重大作用。从"数字沟域"的提出、数字沟域建设的几个方面等做出了对"数字沟域"建设的一些研究分析。 相似文献
87.
云计算与移动数字图书馆 总被引:1,自引:0,他引:1
刘杨 《农业图书情报学刊》2012,24(4):56-59
移动数字图书馆作为图书馆在信息技术变革中推出的新服务模式,无疑会受到云计算技术的影响。通过分析云计算的特征和应用形式,提出移动数字图书馆应用云计算的三种模式,即基础设施即服务(IAAS)、软件即服务(SAAS)和平台即服务(PAAS)。 相似文献
88.
苏明强 《农业图书情报学刊》2012,24(7):40-43
数字资源的建设与发展已经成为科教兴国、科技创新,提高核心竞争力的基本保障,更是中国数字信息服务系统赖以生存的根本。通过大量数据全面系统地阐述了中国数字资源现阶段的发展状况。 相似文献
89.
为避免人为评审带来的误差,运用图像处理技术中的图像分割、标记、HSI颜色模型对茶叶品质分级进行探讨。结果表明,该技术成功地对茶叶图像进行分割,并通过运用HSI颜色模型中H、S颜色分量的直方图,可以成功区分茶叶的等级。 相似文献