（n,1,1）共轭边值问题多个正解的存在性

考虑方程ｕ（ｎ）＋ｆ（ｔ,ｕ）＝０在边值条件ｕ（ｋ）（０）＝０,０≤ｋ≤ｎ－２,ｕ（１）＝０下多个正解的存在性．假定ｆ在一端（零点或无穷远点）超线性增长,而在另一端次线性增长,则上述问题至少有两个正解     

奇异非线性n阶常微分方程边值问题

利用打靶法讨论奇异非线性ｎ阶常微分方程边值问题ｕ（ｎ）（ｔ）＋ｆ（ｔ,ｕ）＝０,ｔ∈（０,１）,ｕ（ｋ）（０）＝０,０≤ｋ≤ｎ－２,ｕ′（１）＝ｃ正解的存在唯一性,其中ｃ是非负实数,函数ｆ（ｔ,ｕ）在（０,１）×（０,∞）上非负连续,并且关于ｕ单调不增     

一类半线性椭圆型方程的边值问题

讨论了如下的半线性椭圆型偏微分方程的边值问题Δｕ＋ｆ（｜（ｘ，｜，ｕ）＝０，ｘ∈Ω，ｕ（ｘ）＝０，ｘ∈δΩ的径向解，其中ｎ≥２，Ω是Ｒ＾ｎ空间的单位开球。用Ｓｃｈａｕｄｅｒ不动点定理，在新的奇异性条件下，得到（１）－（２）解的存在性。     

一类非线性发展方程的第二边值问题

研究具第二边界条件ｕｎ＝ｂ（ｕ）的非线性抛物方程ｕｔ＝（ａ（｜ｕ｜）ｕ）＋ｆ（ｕ）的整体解,使用上、下解方法,在关于ａ,ｂ与ｆ的适当假定下,得到了上述第二边值问题正解的整体存在及在有限时间ｂｌｏｗ－ｕｐ的条件。     

一类拟线性方程的奇异边值问题

本文利用上、下解技巧讨论了奇异方程（｜ｕ′｜ｐ－２ｕ′）′＋ｆ（ｔ，ｕ）＝０满足非线性边值条件ｈ（ｕ（ｏ），ｕ′（ｏ）＝０ｕ（１）＝０的正解存在性     

关于乘积空间上的Marcinkiewicz积分

该文给出了如下定义乘积空间Ｒｎ×Ｒｍ上一类带粗糙核的Ｍａｒｃｉｎｋｉｅｗｉｃｚ积分算子μΩ，ｂ（ｆ）的Ｌ２（Ｒｎ×Ｒｍ）有界性：μΩ，ｂ（ｆ）（ｘ，ｙ）＝（∫∞０∫∞０｜Ｆｂ，ｔ，ｓ（ｘ，ｙ）｜２ｄｔｄｓｔ３ｓ３）１／２，这里，Ｆｂ，ｔ，ｓ（ｘ，ｙ）＝｜ｘ－ｕ｜≤ｔ｜ｙ－ｖ｜≤ｓΩ（ｘ－ｕ，ｙ－ｖ）ｂ（｜ｘ－ｕ｜，｜ｙ－ｖ｜）｜ｘ－ｕ｜ｎ－１｜ｙ－ｖ｜ｍ－１ｆ（ｕ，ｖ）ｄｕｄｖ，且Ω为原子Ｈａｒｄｙ空间Ｈ１ａ（Ｓｎ－１×Ｓｍ－１）中的函数，ｂ为空间ｌ∞（Ｌｑ（Ｒ＋×Ｒ＋）中的径向函数     

一类反应扩散方程的整体解及其熄灭行为

用半群方法研究一类反应扩散方程ｕ１－△ｕ＋ｆ（ｕ）εｕ／εｘｉ＋ｇ（ｕ）＝０的初边值问题，在ｎ≤３，ｆ（ｓ），ｇ（ｓ）∈Ｃ＾２，ｇ（ｓ）ｓ≥０的条件下，得到整体经典解的存在唯一性，给出这种解在有限时间内熄灭的一个充分条件。     

一类拟线性椭圆方程第三类边值问题正解的存在性

本文得到了边值问题ｄｉｖ（Ｄｕ｜ｐ－２Ｄｕ）＋ａ（‖ｘ‖）ｕ－ｑ＝０在ＢＲＮｕｎ＋λｕ＝－α在Ｂ｛对称正解的存在性．这里Ｂ是一个球域．     

半线性椭圆方程Δu—a（x）u＋b（x）u^p=0 Dirichlet问题的奇异解

证明了半线性椭圆方程Δｕ－ａ（ｘ）ｕ＋ｂ（ｘ）ｕ＾ｐ＝０的Ｄｉｒｉｃｈｌｅｔ问题，当１〉ｐ〉（ｎ＋２）／（ｎ－２），ｎ≥３，且ａ（│ｘ│），ｂ（│ｘ│）满足适当条件时有无穷多奇异正解。     

分担两个小函数的亚纯函数

设ｆ和ｇ是非常数亚纯函数,ｎ为非负整数,ａ,ｂ,ｃ,ｄ是ｆ和ｇ的小函数,其中ａ≠ｃ＾（ｎ）,ｂ≠ｄ＾（ｎ）。如果ｆ＾（ｎ）＝ａ＝ｇ＾（ｎ）＝ｂ及δ（ｄ,ｇ）＋２（∞,ｆ）〉ｎ＋５,δ（ｃ,ｆ）＋δ（ｄ,ｇ）＋２（∞,ｇ）＋（ｎ＋２）（∞,ｆ）〉ｎ＋５,则ｆ＾（ｎ）－Ｃ＾（ｎ）／ａ－ｃ＾（ｎ）＝ｇ＾（ｎ）－ｄ＾（ｎ）／ｂ－ｄ＾（ｎ）呀（ｆ＾（ｎ）－ｃ＾（ｎ）（ｇ＾（ｎ）－ｄ＾（ｎ）＝（ａ－ｃ＾（ｎ）     

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