大城市周边地带城市化水平评价指标体系

目的 对大城市周边地带进行理论界定，并建立其城市化水平评价指标体系。方法 在对大城市周边地带理论界定的基础上，根据指标体系设计的原则，运用因子分析法以及SPSS软件对指标进行筛选并得出其指标层次结构，最后运用层次分析法求出了各指标的综合权重。结果 建立了大城市周边地带城市化水平评价指标体系。结论 该指标评价体系能够更全面地反映一个地区的城市化水平。     

农业产业化与农村剩余劳动力的转移和开发

提出农村剩余劳动力的转移必须与农业的发展相联系,必须与农村剩余劳动力的开发相联系,并以成都平原双流县农业产业化实践为例,指出农业产业化是农村剩余劳动力转移与开发及农业发展的较佳途径。     

The salinity during larval development affects the dispersion in adults of the tree-climbing crab Aratus pisonii

Adults of the tree-climbing crab Aratus pisonii occur in estuarine regions with a range of salinity of 0–35. However, the larvae cannot complete the development in a wide range of salinities. A study about the effect of salinity on the larval development was conducted in order to infer about adult dispersion and occurrence in a wide range of salinity. Two experiments were conducted: (1) from zoae I to megalopae stage and (2) from megalopa to juvenile stage. Larvae from eight females from Paranaguá Bay, Paraná, Brazil were obtained. After eclosion, for the first experiment, 100 zoea larvae from five females were acclimated, individualized and transferred to small aquariums with five distinct salinity treatments (S0, S5, S15, S25 and S35). For the second experiment, 50 megalopae from three females were individualized in aquariums in the same salinity treatments. Both experiments were conducted in incubator BOD with a constant temperature of 25°C and photoperiod of 12 hours (light/dark). Larvae were fed daily with eggs and naupli newly hatched of Artemia sp. The salinity affected the survival rate during the development in both experiments. Higher survival from zoea I to megalopa stage occurred in salinities 25 and 35 PSU, while from megalopa to juvenile stage in salinities 15 and 25 PSU. In both experiments the larvae did not tolerate low salinities as adults, with total mortality in S0 and S5. Our results suggest that the species have a larval export strategy of zoae larvae to oceanic regions (higher salinities) and megalopae needed to return to estuarine areas with intermediate salinities to complete the development. The occurrence of adults in estuarine areas with low (< 5 PSU) or high (> 25 PSU) salinities most likely occur after the metamorphosis to the juvenile stage by terrestrial dispersion or at the stage of megalopa (marine dispersion) during favourable weather events.     

山东省城乡差距现状评价及成因分析

采用横向比较与纵向比较相结合的方法,客观评价了山东省城乡差距的发展现状,并且分别从理论和实证角度分析了山东省城乡差距的成因,在此基础上提出缩小山东省城乡差距的政策建议．     

洛阳烟区烤烟化学成分特点分析

对在2002-2005年间洛阳地区的70个烤烟样品进行了常规化学成分分析,结果表明:烤烟总氮、钾、氯、淀粉含量基本适宜,还原糖、烟碱、糖/碱、氮/碱、钾/氯等变异范围较大,部分样品烟叶烟碱、还原糖含量偏高;各化学成分间相互比例基本协调,少数烟叶化学成分比例不够协调甚至失衡.     

平顶山市贫困地区教育资源有效配置及提高效益的研究

本文通过平顶山市贫困地区教育资源配置现状调查及原因分析,提出了完善贫困地区教育资源投资体系,合理配置教育资源,提高教育资源利用效益的措施和途径。为改变贫困地区教育落后的面貌提供了可行的方法。     

城市群综合竞争力动力机制研究

经济全球化与区域经济一体化必然要求重视和加强城市群经济的发展．本文在界定城市群综合竞争力概念的基础上,阐述了城市群综合竞争力的动力机制,将城市群的综合竞争力驱动因素归纳为集聚竞争力、个体城市竞争力、产业竞争力、区位竞争力和制度竞争力．通过对我国现有城市群的分析,指出我国城市群竞争力较弱的原因主要在于群内城市分工协作不明、产业同构化严重和一体化程度不高等,因此提高区域一体化程度是未来提升城市群综合竞争力的关键,为此要采取相应的战略和对策．     

临沂市农业产业化的现状和可持续发展对策

农业产业化经营是农村改革以来的一个带有全局性和战略性意义的重大突破,是农业经营体制、组织形式和运行机制的重大创新,是加快欠发达地区农业经济结构调整、增加农民收入的重要举措．论述了临沂市农业产业化的现状,存在的问题以及可持续发展对策．     

矿区铁路自营和代管问题的探讨

简要阐述了矿区铁路自营与代管的概念，着重对矿区铁路自营和代管的条件及交接问题进行了探讨。     

解放思想、与时俱进是少数民族地区加快发展的关键

少数民族地区为加快其发展，就必须坚持解放思想，与时俱进，努力在以下五个方面取得突破：在调整和完善所有制结构上，在解放和发展生产力上，在发挥地区优势上，在实施“引进来”、“走出去”的战略上，在人才资源开发和管理上。