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151.
日益激烈的国际竞争,归根到底是人才的竞争。测绘地理信息作为战略性新兴产业在国防安全、基础测绘、应急保障中的作用日益提升,大量的毕业生作为新的血液为测绘事业增添了新的活力。如何做好新职工入职培训,是搭建人才培养梯队,优化人才成长环境,是快速成才的关键。本文通过系统分析新职工入职培训现状,提出了面向用人单位-培训人员-新职工的三层入职培训模型,以健康成长、快速成才为目的,构建了多层次入职培训模型,优化了人才培养模式,应对地理信息应用对人才需求的挑战。 相似文献
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Hydraulic thresholds for erosion of fourteen upland mineral and organic soils were determined in a hydraulic flume. These soils are from areas to be afforested in the United Kingdom. Some of the group are erosion resistant but others are susceptible to erosion once denuded of vegetation; for example, by preafforestation ploughing. These threshold data were required to calibrate a hydraulic model for effective design of preafforestation drainage networks on a variety of soils. However, simple field measures of soil properties indicative of erosion potential would be of value to the forestry industry for management purposes. Consequently, hydraulic threshold data were related by linear regression methods to basic soil properties, including organic content, grain size, bulk density, compression strength and penetration resistance. The investigation concluded that four peat soils are not eroded by clear water velocities up to 5·7 m s−1, although a mineral bedload might induce erosion at lesser current speeds. Penetration resistance is a good field indicator of the degree of humification of the peat soils. Although selected physical parameters contribute resistance to water erosion, an increased organic content is pre-eminent in reducing erosion susceptibility in both organic and mineral soils. Although compressive strength was not indicative of soil erodibility, field measurements of penetration resistance on a variety of soils could be related to hydraulic thresholds of erosion; albeit through the construction of discriminant functions interpolated by eye. Consequently, organic content (laboratory) or penetration resistance (field) might form the basis of classifying upland soils in terms of erodibility. Mineral soils differ widely in terms of their erodibility, so that subject to further consideration, the use of ploughing for forestry cultivation might be appropriate in wider circumstances than presently recommended by the Forests and Water Guidelines. Ploughing should be acceptable on deep peat providing the underlying mineral soil is not exposed in the bottom of the furrow, and furrows are not led from mineral soils on to deep peat. © 1997 John Wiley & Sons, Ltd. 相似文献
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方斑东风螺养殖方式的初步研究 总被引:17,自引:0,他引:17
2003年5~11月,水温24.5~32℃,pH8.1~8.3,盐度21.2~32.0时,在湛江市东海岛分别利用室内水泥池、对虾高位池、自然海区砂滩以及水泥沉箱进行了方斑东风螺(Babylonia areolate Larnarck)人工养殖方式的研究。试验结果表明,方斑东风螺养殖的合适密度为:室内水泥池300~400个/m^2高位池和天然海区砂滩100~200个/m^2,水泥沉箱0.63m^3 200~250个/箱;方斑东风螺最佳饵料为蟹类,其次为虾类,然后是鱼类。经过3个月的人工养殖,生长最快的方斑东风螺由平均壳高0.7cm长至4.8cm。 相似文献
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This paper examines the status of traditional agriculture in two areas of Azilal province in the Atlas Mountains, seeking to identify what is needed to counter any breakdown in livelihood strategies and improve the quality of life enjoyed by the farmers. Irrigated terrace agriculture is an important part of livelihood strategies in the areas studied and has the potential to be more productive and sustainable. In some areas it is reported to be endangered by socioeconomic changes and highland land degradation caused by excessive shifting cultivation, sheep and goat grazing, and charcoal production. Field visits made during summer 1998 to establish the condition of irrigated terrace and runoff agriculture and the factors affecting it showed that in at least one of the villages supportive social capital has ensured that challenges are being met and beneficial innovations are being made. Considerable variation in success was evident from community to community, with some farmers maintaining adequate lifestyles and innovating, while in other communities prospects are less promising. The effects of structural adjustment have clearly been felt and may also have triggered some of the highland degradation and difficulties, which clearly threaten some irrigated terrace agriculture and other livelihood practices. 相似文献
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“项目导向”的测绘高技能人才培养途径探讨 总被引:2,自引:0,他引:2
通过校企合作,以区域典型测绘工程项目为导向,将测绘工程项目引入人才培养方案中,深化“项目导向”的人才培养模式改革,构建以项目工作任务为载体的课程体系,改革教学内容、教学方法和教学手段,探索测绘高技能人才培养途径。 相似文献