农业产业化与农村城镇化的互动互进

在促进农村经济发展，解决“三农”问题的各种方略中，农业产业化与农村城镇化是相互影响、相互作用的两个方面。农业产业化推动农村城镇化，农村城镇化反过来又服务农业产业化，农村城镇化与农业产业化的协调发展需要我们建立农业产业化利益分配机制，选择一条适合我国农村现状的产业化发展道路；强化城镇综合功能，建立科学合理的城镇体系；强化农民教育，培育适应农业产业化和农村城镇化化的人力资本等等。     

南京农村城镇化制度创新的设想

迄今为止已出台的农村城镇化政策的基本取向可以概括为“两个转变” ,即从以前的限制农村人口向城镇迁移转变为鼓励和提倡农村人口向小城镇迁移 ,促进农村城镇化 ;从传统的计划经济城镇建设模式转变为实行市场经济的原则和做法 ,因而是历史性的进步。已出台的农村城镇化政策反映着过去 2 0年间先进地区小城镇建设的基本经验 ,也反映着长期以来政府部门和学术界的研究成果。这些政策应当在南京农村城镇化的实践中充分用好、用足 ,也构成了本课题研究的基础。然而另一方面 ,我们在课题调查中也发现 ,农村城镇化的制度创新才刚刚开始 ,一些制约…     

农村城镇化建设展望

在当前社会建设的大背景下,对农村城镇化建设进行分析和展望具有重要意义。本文在分析了当前我国农村城镇化存在的农业生产落后、缺乏有效的规划等问题后,提出了对农村城镇化建设的展望,认为要编制合理城镇化发展规划、大力提高与发展城镇化建设的发展步伐,完善城镇管理体制的建设。     

苏北现行农地制度问题与改革创新之策

我国新型城镇化是相对于过去的土地城镇化而言的,其核心是农业人口有序向城镇转移.如果农业人口能够有序向城镇转移,农村人多地少的矛盾就可以解决,土地适度规模经营就能逐步变为现实,农业现代化方可实现.但在农民市民化的同时,又可能加剧城镇建设用地的短缺.所以,实施新型城镇化战略,农地制度改革是绕不开的话题.     

简论实现可持续发展的农村城镇化战略

本文从我国农村城镇化现状出发,在小城镇建设、城乡经济发展及农村城镇网络三个大的方面论述了我国农村可持续的城镇化战略。     

河南省城镇化水平合理比率浅析

河南省农村人口转移压力较大,城镇化目标应建立在实现农村充分就业、提高农村地区容纳人口数量的基础之上.应根据我国居民对粮食和食物需求的增长趋势,预测粮食和耕地需求量,以及农业所能承载的最大人口数量,计算农村剩余劳动力以及可以向城市转移的人口数,依此科学地确定全省城镇化水平的合理比率.     

城镇网络化:我国西部地区城镇化的新途径

城镇网络化,是以网络的方式联接和实现的新型城镇化的一种推进方式,强调通过各种网络的链接,使各个城市之间互相协作,形成产业分工和功能互补,在发展中相互扶持、相互依赖,实现区域经济的整合.我国西部地区网络化程度较低,很大程度上制约着城市与区域发展.针对西部地区城镇与区域发展的现实状况,探索了适合西部地域特色的城镇化新途径.结论为:依据走廊型和城市群城镇网络化发展模式,重点围绕侧"M"型战略支点网络骨架,加大力度建设"四大经济走廊、三大城市群"城镇网络体系,带动整个西部地区城镇群体的网络化发展,走出西部城镇化的新途径.     

从国外经验看我国农村城镇化的模式

加快农业、农村和农民的发展,缩小城乡差距,其根本有效的办法是加快农村城镇化进程.本文通过分析国外农村城镇化模式,结合我国的农村城镇化进程及发展模式,提出了进一步推动城镇化发展的措施.     

城镇化过程中的金融变革

中国城镇化趋势不可避免 "城镇化"一词是中国学者近年来创造的一个新词汇,1991年,辜胜阻在《非农化与城镇化研究》中使用并拓展了"城镇化"的概念,与城市化的概念一样,"城镇化"概念也是一片百家争鸣的景象,至今尚无统一的概念.笔者以为,所谓城镇化,就是指农村人口不断向城镇转移,第二、三产业不断向城镇聚集,从而使城镇数量增加,城镇规模扩大的一种历史过程. 城镇化作为一种社会历史现象,既是物质文明进步的体现,又是精神文明前进的动力.城镇化作为一种历史过程,不仅是一个城镇数量与规模扩大的过程,同时也是一种城镇结构和功能转变的过程.这一历史过程包括四个方面:第一,城镇化是农村人口和劳动力向城镇转移的过程;第二,城镇化是第二、三产业向城镇聚集发展的过程;第三,城镇化是地域性质和景观转化的过程;第四,城镇化包括城市文明、城市意识在内的城市生活方式的扩散和传播过程.     

龙岩市人口城镇化路径分析

城镇化水平是衡量一个地区经济和社会发展水平的重要指标.当前,龙岩市人口城镇化虽处于快速发展阶段,但依然存在着城镇化总体水平低,城镇化水平滞后于工业化水平; 城镇化地区差异大,城镇体系不协调;三大产业结构不合理,城镇化后续发展不足等问题.促进龙岩市人口城镇化必须大力发展二、三产业,提高城镇发展动力;强化城镇特色,增强城镇吸引力;发展现代农业,促进城乡协调发展;加快制度创新,鼓励外出人员回乡创业.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with