共查询到20条相似文献，搜索用时 15 毫秒
1.
福建民营企业正进入二次创业的高峰期,而在此之前一些实力雄厚的企业已纷纷开始抢摊上市。本文从福建民营企业自身特点出发,着重分析其在二次创业过程中所面临的问题尤其是融资难题,通过分析其成因,以探求融资战略与制度变革的有效结合点,从而引导福建民营企业顺利解决其"融资瓶颈"。 相似文献
2.
同声传译作为一种交际活动，具有很强的学术性和专业性。本文就同声传译一些实用的策略和技巧分别从视点转换角度，长句的处理以及源语言作者的态度的处理方面进行了探讨，并讨论了临场紧急情况的处理策略。同时介绍了同声传译工作临场应注意的准备事项策略，笔记策略和制作词汇表策略作为基本实践策略尤为重要。在同声传译中，最关键的问题是把发言人讲话的意思清晰地、准确无误地传达给听众，帮助对方的交流得以实现。 相似文献
3.
我国农业机械化现状及发展趋势 总被引：8，自引：0，他引：8
农业机械是现代农业的基础装备，对提高农业劳动生产率、增加农产品供给、保证农业稳步发展起了到至关重要的作用。为此，论述了中国农业机械化的现状、取得的成就和存在的不足，分析了我国农业机械化发展的策略，探讨了今后中国现代农业装备的发展趋势，以期为我国农业机械行业的发展提供一定的参考。 相似文献
4.
本文所涉及的“智能农业”是指基于大系统控制理念的农业大系统智能控制体系,这与以往的基于电脑农业和农业专家系统的“农业智能化”有本质的区别。本文所探讨的“智能农业”是从复杂大系统角度把农业系统看成一个可控的闭环大系统,然后在农业领域综合应用人工智能、自动控制、运筹学,以及引入先进的检测技术和网络技术等来整体提高农业系统的智能化,并达到优化产出。本文对智能农业的论述是围绕复杂大系统的控制问题而展开的,进一步完善对于智能农业的阐述;同时,针对人工智能和自动控制应用、大系统分析建模和系统控制指标解析等进行了讨论,提出了若干研究方向和需要重视的问题。 相似文献
5.
6.
7.
以杭州市萧山区为例,运用公共管理理论分析了萧山区农机安全生产现状与管理问题,认为萧山区农机安全生产形势依然严峻,存在农机安全管理效果有待提高等问题。从农机安全管理角度来讲,其主要原因在于农机安全管理宏观把握不够准确,绩效考核不够到位,信息管理不够健全。同时,提出了农机安全管理的思路与对策。 相似文献
8.
9.
10.
11.
12.
我国的第一个商业性的网络广告出现在1997年3月。十多年来,网络广告以其独特的优势迅速发展成为一种重要的广告形式。我国目前的网络广告正在经历快速发展的阶段,但由于存在一些问题,制约了其发展,本文对我国网络广告的现状进行分析,提出现阶段存在的问题,并提出促进网络广告发展的建议。 相似文献
13.
人们的生活水平在不断提高,对食品提出了更高的要求,关注食品安全的程度在不断加深。但是,农产品安全管理过程中还存在一定的问题,如管理体系不够健全等。主要阐述了农产品质量安全管理体系中存在的问题,以及质量管理体系的标准化内容,对提升农产品的安全起到一定的促进作用。 相似文献
14.
双流传动履带车辆转向机构的研究现状及发展趋势 总被引：1，自引：0，他引：1
转向机构是履带车辆的重要组成部分,转向性能是整车性能的重要评价指标,其性能的优劣直接影响着车辆的转向机动性和生产效率.因此,对性能优良的双流传动转向机构的研究一直是车辆工程领域科研工作者亟待解决的课题.为此,详细介绍了各种双流传动转向机构的优缺点,分析了新型双流传动转向机构的工作原理和国内外研究现状,提出双流传动履带车辆转向机构的发展趋势. 相似文献
15.
Crop tolerance to land submergence is an important criterion for designing a surface drainage system for agricultural lands. This paper collates the available data from various places in India related to the studies on the submergence tolerance of crops. The paper hypothesizes that a piecewise linear model could be used to describe crop response to land submergence. According to this hypothesis, there would be no yield decline for a few initial days of submergence. If submergence continues beyond this period then there would be linear decline in yield. The unknown parameters in the model are: optimum yield, threshold time and the slope which represents the per cent yield reduction per day of additional submergence beyond the threshold.Data in respect of wheat, pigeon peas, cowpeas, pearlmillet, maize and groundnuts indicate that the model describes the data well, although in many cases the threshold is 0.0. The yield reduction varies from 5.3 to 23.2% for each day of submergence beyond the threshold. It appears that to allow for more than 1–2 days of submergence will result in more than 10% reducation in yield of dryfoot crops. For the maize crop, the seedling stage is the most sensitive stage followed by the silking stage. The grain formation stage is the least sensitive, although even at this stage the threshold is 0.0 and yield reduction is 9.3% for each day of submergence beyond the threshold. The data for 9 test crops from Texas and Venezuela were well described by the model. It is concluded that the piecewise linear model is a useful tool for describing submergence tolerance of crops and for working out surface drainage requirements for a given level of yield reduction. Frequency analysis of the daily rainfall data from some selected locations indicates that there is every likelihood of submergence at most of the stations. It is suggested that there is an urgent need for developing wet farming techniques analogous to dry farming techniques. 相似文献
16.
构建高等学校合理的师资队伍群体 总被引：3，自引：0，他引：3
在高等学校教师队伍建设中,既要重视和研究每一个人的素质,又要重视和探索师资队伍的结构。因为有了合理的群体结构,才能充分发挥育人的最佳效益。目前,对教师的群体结构缺乏研究,对教师队伍的结构建设尚未引起各高等学校的高度重视,有些学校结构不够合理,育人的质量与效益不高。为此,就高等学校师资队伍的结构及其建设从理论与实践的结合方面做了论述。 相似文献
17.
《Agricultural Water Management》1998,36(3):213-231
Fallowing remains a feature of dryland cereal agriculture in some low rainfall areas of central and northern Spain. To complement the limited number of measurements of water stored during the fallow, we developed a physically based simulation model to estimate the effects of variations in rainfall, soil characteristics and surface conditions on water storage in the profile. Mean annual rainfall in the locations investigated varied from ca. 300–500 mm and the mean amount of water stored during the last year of a bare fallow ranged from 1–48 mm, depending on soil and climate. The standard deviations of these amounts, each based on 25 simulations, varied from 11–39 mm. Rainfall in the last 3 months of the fallow was the principal cause of this year to year variation in storage. Surface stoniness and crop residues decreased evaporation from the soil and increased storage: there was very little drainage. These findings are consistent with measured water storage in soils in this part of Spain, and other areas of the world with similar climates and agricultural practices. Based on barley yield/rainfall regressions for data from a dry area in the Ebro valley, we estimated that the annual yields from a crop–fallow system would be 15% greater than those from annual cropping. For fallowing to be economic, yields per crop would need to be about twice those obtained with annual cropping. There may be yield benefits from fallowing apart from those resulting from extra water storage in the soil. Unless such benefits can be demonstrated, fallowing would appear to be uneconomical in this area of Spain. 相似文献
18.
19.
The impacts of climate change on livestock and livestock systems in developing countries: A review of what we know and what we need to know 总被引：4，自引：0，他引：4
Despite the importance of livestock to poor people and the magnitude of the changes that are likely to befall livestock systems, the intersection of climate change and livestock in developing countries is a relatively neglected research area. Little is known about the interactions of climate and increasing climate variability with other drivers of change in livestock systems and in broader development trends. In many places in the tropics and subtropics, livestock systems are changing rapidly, and the spatial heterogeneity of household response to change may be very large. While opportunities may exist for some households to take advantage of more conducive rangeland and cropping conditions, for example, the changes projected will pose serious problems for many other households. We briefly review the literature on climate change impacts on livestock and livestock systems in developing countries, and identify some key knowledge and data gaps. We also list some of the broad researchable issues associated with how smallholders and pastoralists might respond to climate change. The agendas of research and development organisations may need adjustment if the needs of vulnerable livestock keepers in the coming decades are to be met effectively. 相似文献