农业产业化地域模式形成中集聚-扩散机制分析——以烟台市栖霞蛇窝泊果品批发市场为例

在评述农业产业化及其地域模式研究现状的基础上，以烟台市栖霞蛇窝泊果品专业产业化经营模式为例，分析论证了集聚-扩散机制在农业产业化地域模式形成中的作用及其对农业产业化经营实践的有益启示。     

对农业科技在南京农业产业化中的作用的再认识

农业是一个受自然资源和市场双重制约的弱质产业，南京农业产业化要想在激烈的市场竞争中取得成功，在土地等资源日趋紧张情况下提高劳动生产率，实现农业增效、农民增收，愈来愈取决于产业的科技含量和技术创新的程度。推进农业产业化经营，必须发挥南京的农业科技优势和相关的城市优势，提高农产品的市场竞争力，为农业产业化提供全方位的科技服务，用科技武装产业化的实施者，当好农业产业化宏观管理者的科技参谋，努力解决科技和农业产业化相结合上存在的有关问题等等。１　南京农业科技优势概述１－１　人才优势　南京有与农业和食品业…     

浅谈农业产业化在农村经济发展中的作用

农业产业化是我国农业走向现代化的必由之路。要解决"三农"问题,比较有效的方法是发展特色经济,加速农业产业化经营。其实质是为了拉长农业的产业链条,发展农产品精深加工,把企业经营引入农业领域,解决市场经济条件下农民面临的"小生产、大市场"的矛盾,以及种粮效益低下的状况,充分利用资金、技术、人才和市场的结合,激活本区域内的劳动力及土地等资源,使农业增效,农民增收。     

舒城县农产品精深加工产业科技发展的思考

<正>舒城县农产品精深加工产业科技发展要以推进农业供给侧结构改革为主线,以发展现代农业为抓手,把绿色优质农产品供给放在突出位置,狠抓农产品标准化生产,提高农产品综合生产能力,延伸产业链条,提高农产品附加值,提升科技含量,实现农民增收,走出一条"产业集聚、产出高效、产品安全、品牌高档"的科技发展之路。一、舒城县农产品精深加工产业科技发展现状近年来,舒城高度重视农产品精深加工产业发展,大力培育龙头企业,制定了一系列优惠扶持政策,如《舒城     

提高农业产业化经营中的科技含量是农业发展的希望

近年来，全国各地农业产业化经营发展较快，各种农产品蜂拥上市。但是随着农产品的不断丰富和受东南亚经济危机的冲击而导致市场的萎缩，我国的农产品市场已由卖方市场转向买方市场，粗放型、传统型的农产品逐渐滞销，这对于刚起步的农业产业化经营是个严峻的挑战，要使各地的农业产业化经营健康发展，出路何在？根据国内外农业产业化经营的经验教训和我们几年来的实践，注重提高农业产业化经营中的科技含量是我们的必然选择。一、农业产业化经营中提高科技含量的必然性和重要性农业产业化经营中的科技含量就是产业化过程各环节中诸如科学化…     

大连市农业产业化发展研究

农业产业化既具有全球普遍性，又具有区域特殊性，各地都可根据本地资源优势、区位优势发展本地区的农业产业化经营。以农业产业化的基本理论为指导，在深入调查研究的基础上，系统地论述了大连市发展农业产业化所具备的优势条件、发展现状及存在问题。通过调查研究、比较分析，结合地域优势、产品优势和经济优势提出了发展农业产业化的思路与对策，可为各级政府、相关部门、企业和农户发展农业产业化提供理论依据及借鉴参考。     

以科技为先导加快农业产业化进程

农业产业化是适应市场经济要求,推动农业新一轮创业的重要途径．是社会主义市场经济条件下农业集约化规模化的生产经营。它加快了传统农业向现代农业、市场农业转化,解放和发展生产力,解决了农民分散经营与社会大市场的矛盾．农村劳动力素质低、技术水平低与建设现代农业．促进农业科技进步的矛盾。实践证明,在农业产业化进程中,只有把科技进步贯穿于其全过程,通过技术的变迁．提高农业产业化的科技含量,才能加快农业产业化的步伐。     

振兴东北老工业基地必须加快发展现代化农业

长期以来，东北地区偏重型的工业结构、初级型的农业结构，以及工农、城乡之间的“双二元”结构，造成了工农业关联度的降低和互动机制的缺失。东北地区具有丰厚的农业资源和农产品规模优势，但长期得不到工业联动和支持，依托农产品原料的轻加工业落后，传统农业的规模优势弱化，致使农业产业化与社会化的进程缓慢，     

加快现代农业示范园区建设步伐

各地要根据苏州市现代农业发展的总体定位，按照每个市（区）都要建成1－2个具有一定规模的现代农业示范园区的总体要求，以基础设施投入为起点，生态建设为基础，高新科技为平台，招商引资为突破口，引进推广一批农业高新技术，吸引集聚一批产业化经营主体，培育壮大一批特色产业群，通过科学规划，合理开发，使园区逐步成为苏州市农业新品种的引繁中心，名特优农产品的生产基地，农业科技推广示范的窗口，三资开发的主战场，农业休闲观光的新胜地。     

推进优势农产品区域布局规划的措施建议

临沧地区农产品的品种、品质结构不尽合理。市场竞争力低。产业化经营水平低，农民增收难的矛盾仍然十分突出。推进优势农产品的区域化布局。促进结构调整升级。提高农业产业化经营水平，显得十分必要和迫切。     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the