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排序方式: 共有501条查询结果,搜索用时 15 毫秒
1.
面对我国板块构造式区域经济发展格局中"中部塌陷"的现实,作为我国粮食主产区的中部地区应采取"倾斜""反哺""预警"三大对策来解决"三农"问题.倾斜对策是针对农村发展的,主要措施是权力向县级组织倾斜,资源向县城及农产品加工园区倾斜,政策向农村基础设施建设和农业产业化发展倾斜;反哺是针对农业发展的,措施是沿海工业发达地区反哺中部粮食主产区;预警是保护农民利益的,措施是实施农民利益预警调控.  相似文献   
2.
霍兰在复杂性系统科学方面提出复杂自适应系统(CAS)理论.他提出的涌现性理论对创新研究具有重要意义.对霍兰的科学思想渊源关系、遗传算法、CAS理论、涌现性方面的奠基性工作加以详细研究和评述,进而确立了霍兰在遗传算法、复杂性系统科学上的奠基性地位.  相似文献   
3.
集群化是战略性新兴产业发展的重要模式和主要路径.针对我国战略性新兴产业集群发展中面临的产业技术储备不足与市场培育相对滞后并存的问题,从产业集群、战略性新兴产业集群、产业集群协同发展等理论以及与生态学融合发展视角,综述了战略性新兴产业集群协同发展的相关理论基础,探寻现有理论研究的一般规律以及存在的“缺口”,并分析了下一步研究可以拓展的方向,即结合我国战略性新兴产业集群协同发展的特点,将生态位理论嫁接、融合到产业集群理论中,重点剖析战略性新兴产业集群发展中的“技术生态位—市场生态位”协同跃迁的作用机理,由此提出相关的机制、政策等.  相似文献   
4.
Introduction and spread of the parasite Myxobolus cerebralis, the causative agent of whirling disease, has contributed to the collapse of wild trout populations throughout the intermountain west. Of concern is the risk the disease may have on conservation and recovery of native cutthroat trout. We employed a Bayesian belief network to assess probability of whirling disease in Colorado River and Rio Grande cutthroat trout (Oncorhynchus clarkii pleuriticus and Oncorhynchus clarkii virginalis, respectively) within their current ranges in the southwest United States. Available habitat (as defined by gradient and elevation) for intermediate oligochaete worm host, Tubifex tubifex, exerted the greatest influence on the likelihood of infection, yet prevalence of stream barriers also affected the risk outcome. Management areas that had the highest likelihood of infected Colorado River cutthroat trout were in the eastern portion of their range, although the probability of infection was highest for populations in the southern, San Juan subbasin. Rio Grande cutthroat trout had a relatively low likelihood of infection, with populations in the southernmost Pecos management area predicted to be at greatest risk. The Bayesian risk assessment model predicted the likelihood of whirling disease infection from its principal transmission vector, fish movement, and suggested that barriers may be effective in reducing risk of exposure to native trout populations. Data gaps, especially with regard to location of spawning, highlighted the importance in developing monitoring plans that support future risk assessments and adaptive management for subspecies of cutthroat trout.  相似文献   
5.
近年来漯河大量承接产业转移,一些能源企业、电子信息技术企业、生物制药企业落户漯河。以这些企业为代表的新兴产业在漯河逐步兴起,因此,应从政策引导、规划设计、财政扶持和人才培养等政策层面鼓励和刺激新兴产业的崛起。  相似文献   
6.
This article examines how young Filipino men looking to work in international seafaring deploy servitude as a means of attaining education-to-work transition. It focuses on those applying to work for free as ‘utility men’ (gofer or flunkey) in Manila’s manning and crewing agencies that supply seafarers to ship operators around the world in exchange for the promise of boarding a ship. Based on participant observation and life history interviews, the article accounts for how they transform their servitude into diskarte – strategy by which they navigate the limited employment opportunities in the Philippines – by constructing their ‘utility manning’ as an informal and negotiated pathway to employment. The young Filipino men’s seeking and enduring servitude, geared towards gleaning better social possibilities, becomes a profoundly rational act of investing in and securing their future.  相似文献   
7.
Recent scholarly research has claimed that young people are predominantly concerned with their immediate ‘horizon of planning’, resulting in an outlook upon the future that is dominated by present-day concerns. By distinguishing between choices and plans, on the one hand, and hope and faith, on the other, this article analyses how young people relate to the future through their attitudes about responsibility and technology in order to complicate this narrative. The data are drawn from an interview project in which 28 young adults (aged 18–34) discuss both their own future and a general idea of the future of society. Two key findings are discussed. Firstly, respondents are found to place faith in the potential of technology to mitigate future predicaments, and secondly, respondents are found to ascribe mystical or magical qualities to technology. Drawing on these findings, this article suggests that the oft-cited attitude that technology will develop in time to meet the needs of the future does not simply signify a deferral of responsibility onto future generations. Instead, by drawing on scholarship on re-enchantment it is argued that for young adults technological development can represent a refuge of faith and hope for the future.  相似文献   
8.
The impact of an intervention on the self-determination and career planning engagement of young adults with mental health challenges was studied. Sixty-seven young adults, 20 to 30 years of age, with mental health diagnoses (e.g., depression, bipolar disorder) were randomly assigned to intervention and control groups. Statistically significant greater increases were made by the intervention group versus the control group for self-determination and career planning engagement, and self-determination at least partially mediated increases in career planning engagement. With career planning self-determination interventions, young adults with mental health challenges might be able to achieve better career and life outcomes than is typical for this population.  相似文献   
9.
The July 2012 publication of my study on the outcomes of young adults who report parental same-sex relationship behavior raised a variety of questions about the New Family Structures Study and my analyses and interpretations of it. This follow-up article seeks to address a variety of the more common criticisms that have been raised, to offer new commentary and analyses, and to pose questions for future analysts of the NFSS and other datasets that are poised to consider how household dynamics are associated with youth and young-adult outcomes. The new analyses I present here still reveal numerous differences between adult children who report maternal same-sex behavior (and residence with her partner) and those with still-married (heterosexual) biological parents. Far fewer differences appear between the former and several other groups, most notably never-married single mothers.  相似文献   
10.
战略性新兴产业发展需要大量的资金投入,过高的外部融资成本已经成为阻碍战略性新兴产业发展的重要因素.促进战略性新兴产业发展,已经成为一个亟待解决的问题.文章利用2011-2014年七大战略性新兴产业422家上市公司15个季度的面板数据,分别考察了中国银行业与股票市场发展对战略性新兴产业发展的影响.实证结果显示,七大战略性新兴产业的融资约束具有异质性,节能环保产业、高端装备制造业和生物医药产业融资约束较小,新材料、新一代信息技术、新能源汽车和新能源产业具有更大的融资约束.进一步研究发现,金融发展缓解了战略性新兴产业的融资约束,其中股票市场发展较银行发展更能缓解战略性新兴产业的融资约束.  相似文献   
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