内蒙古包头地区候鸟迁徒状况的研究

包头地区具有大面积的黄灌水系，山地、草属、生态环境复杂，故为众多候鸟繁殖和旅居的适宜地区。对研究中国西部候鸟迁徒具有重要价值。从１９９０年至１９９７年对候鸟迁徒状况的初步观察研究。     

"二战"中日军在滇西的战略演变

1942年初至1945年初，日军占领滇西地区。云南成为了抗日的前沿阵地，同时也成为滇缅战场的重要组成部分。日军占领滇西可分为三个时期：初期的攻占时期；中期的占领时期；后期的防守时期。在这3个时期里，日军根据南方战略的变化，在滇西的战略也发生了一系列的演变。     

野生动物迁徒活动将消失

9月，当大雪开始掩埋大台顿公园的时候，叉角羚沿着古老的路线开始迁徙。它们下山后，要向南奔波300多英里，到达宽阔的树木稀少的平坦山地上，在这里生存变得容易些，因为风把草地上的雪吹走了。     

辽宁黑嘴鸥调查报告

1996年3月－1998年3月,采用直接观察法对珍稀水禽黑嘴鸥（Larus saundersi）的繁殖习性、迁徒及数量和分布情况下行了详细调查和研究,并在原记载的基础上发现了又一新的嘴欧繁殖地,使黑嘴鸥在辽宁省的种数量达4390只。     

候鸟迁徙与禽流感(Avian Influenza,AI)传播

2003年以来，亚洲许多国家接连爆发了高致病性禽流感，对家禽养殖业已造成了巨大损失．通过分析禽流感和禽流感疫情暴发的季节性和区域性特点与鸟类迁徒特点的关系．我们认为鸟类迁徒在禽流感的传播中起重要作用．     

人事档案也要"防假、打假"

人事档案受经济时代的影响,出现了一些“假”内容的材料,为了维护人事档案的真实性。必须防“假”、打“假”,如何“防”?怎样“打”?针对这个问题,笔者谈几点建议和方法,供同仁商讨、研究。     

滇西土司在滇西抗战中的影响及其贡献

滇西抗战是发生在多民族聚居的云南边疆的一场反法西斯战争,在这场战争中,滇西土司同仇敌忾,一致抗日,谱写了一曲民族团结的爱国主义诗篇。在这场战争中,滇西各民族关系发生了一些明显变化,对滇西抗战产生了深刻的影响,构成了云南抗日战争史和民族关系学史的重要内容。     

迁徙鸟类表型可塑性研究进展

鸟类长距离迁徒过程中器官表型可塑性的反应特征是可重复、快速和可逆的，这种个体内器官大小表型改变被特称为“表型弹性”，器官的表型弹性改变已成为长距离迁徙鸟类研究的一个重要课题，成为生理生态学新的研究焦点。     

滇西土司在滇西抗战中的影响及其贡献

滇西抗战是发生在多民族聚居的云南边疆的一场反法西斯战争,在这场战争中,滇西土司同仇敌忾,一致抗日,谱写了一曲民族团结的爱国主义诗篇。在这场战争中,滇西各民族关系发生了一些明显变化,对滇西抗战产生了深刻的影响,构成了云南抗日战争史和民族关系学史的重要内容。     

地方性是师专学报的学术优势——《大理师专学报》办刊的几点经验

大理师专高等专科学校位于云南大理白族州点苍山斜阳峰下,这里风光秀丽,古文化发达,历史悠久。大理地区有着悠久的历史,远在汉武帝时代,就在这里设制建郡,在唐朝中期和宋代的四百多年时间里,是古南诏国、大理国的都城,它既臣属于唐宋王朝,又是有一定独立性的地方政权,成为当时云南全境和现与四川、贵州接壤的少部份地区的政治、军事、经济、文化中心,元初蒙古军西征后,大理国灭亡,大理地区已归入了祖国的版图。“汉习楼船,唐标铁柱、宋挥玉斧、元跨革囊。”指出了大理地区这段漫长时间的历史兴亡沿革。到了清代末期,滇西又爆发了以回民杜文秀为首的各族人民大起义,在大理建立了政权,同时爆发了以彝民李文学为首的各族人民起义,它们和太平天国起义相呼应,震撼着腐朽没落的大清政权。在抗日战争中,大理和滇西人民进行了反抗日本帝国主义的反侵略战争,配合全国的抗日战争,前扑后继,在最艰难的岁月里,把日本侵略军狙击在怒江以西,最后驱逐出国境,直到日本帝国主义投降。在中国共产党的领导下,解放前这里开展了连续不断的反对国民党反动派的地下斗争,和国民党反动派进行了英勇的搏斗。涌现了周     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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