关于条件Logistic分布的两个猜测的证明

如果多维随机向量 Ｘ ＝ （ Ｘ１ ， Ｘ２ ， …， Ｘｎ） 满足条件分布是中心ｌｏｇｉｓｔｉｃ 分布，或条件分布和一维边际分布皆是ｌｏｇｉｓｔｉｃ 分布， 则在较弱的条件下证明了 Ｘ１ ， Ｘ２ ，…， Ｘｎ 相互独立     

关于一类BCI-代数及其伴随半群的性质

研究了一类特殊ＢＣＩ－代数Ｘ＝Ｐ（Ｘ）∨ＳＰ（Ｘ）及其伴随半群,讨论了它的一些性质,得出Ｍ（Ｘ）＝Ｍ（Ｐ（Ｘ））∨Ｍ（ＳＰ（Ｘ））．证明了Ｓ是Ｍ（Ｘ）的真理想的充要条件是Ｓ为Ｍ（ＳＰ（Ｘ））的真理想;Ｍ（Ｘ）是剩余半群的充要条件为Ｍ（Ｐ（Ｘ））是剩余半群．当Ｍ（Ｘ）是剩余半群时,每一个ＢＣＩ－代数Ｘ＝Ｐ（Ｘ）∨ＳＰ（Ｘ）均可嵌入到一个ＢＣＩ－代数Ｘ＊＝Ｐ（Ｘ＊）∨ＳＰ（Ｘ＊）中,且Ｘ是Ｘ＊的子代数     

农业自然灾害系统灰色分析方法的探讨

对灰色关联方法在农业自然灾害系统分析中的应用进行了探讨。认为，农业自然灾害对干农业生产的影响完全有别于生产资料投入的作用。当系统特征行为序列（Ｘｏ）为增长序列，相关因素序列（Ｘｉ）亦为增长序列时，不能就此判定Ｘｏ与Ｘｏ为正相关关系而直接进行建模。当促进因素的作用大于抑制因素的作用时，即使灾害的危害有所增加，农业生产仍可表现为一个增长序列。提出判定关联性的命题应为：设系统特征行为序列为Ｘｏ，相关因素序列为Ｘｉ，则，１°当影响因素的性质一致时（如均为促进或抑制），设Ｘｏ为增长序列，若Ｘ１为增长序列，则Ｘ１与Ｘｏ呈正相关关系；若Ｘ１为衰减序列，则Ｘｉ与Ｘｏ呈负相关关系。２°当系统主行为受性质不一致的因索（包含促进和抑制因素）影响时，若Ｘｉ的增长促使Ｘｏ增长或衰减趋势减弱，Ｘｉ的衰减使Ｘｏ衰减或增长趋势减弱，则Ｘｉ与Ｘｏ呈正相关关系；若Ｘｉ增长促使Ｘｉ衰减或增长趋势减弱、Ｘｉ衰减使Ｘｏ增长或衰减趋势减弱，则Ｘｉ与Ｘｏ为负相关关系。     

可遮空间的逆极限

设Ｘ是逆系统｛Ｘα，π＾αβ，Λ｝的极限，│Λ│＝λ，假设每个投射πα，Ｘ→Ｘα是开且到上的Ｘ是λ－超仿紧的，如果每个Ｘα是可遮的，则Ｘ是超仿紧的，进一步还得到遗传可遮的类似结果。     

独立集上最小最大比值和最小极差比值问题的算法

定义在集Ｅ的子集Ｘ上的两个实函数的比值的极大、极小值分别记为Ｍ（Ｘ）和ｍ（Ｘ），极差△（Ｘ）＝Ｍ（Ｘ）－ｍ（Ｘ）。本文给出在秩为ｒ的独立系统（Ｅ，Ｉ）（ＩＰ（Ｅ））中求ｍａｘ｛ｍ（Ｘ）｜Ｘ∈Ｉ｜，｜Ｘ｜＝ｒ｝和ｍｉｎ｛△（Ｘ）｜Ｘ∈Ｉ｜，｜Ｘ｜＝ｒ｝的有效算法及其证明。     

BCI－代数p－半单部分的若干性质

给出了ＢＣＩ－代数Ｘ的ｐ－半单部分ＳＰ（Ｘ）作成理想的几个充要条件．即ＳＰ（Ｘ）是Ｘ的理想当且仅当如下条件之一成立：ａ∈ＳＰ（Ｘ），右乘映射ａｒ是单射；ａ∈ＳＰ（Ｘ），ａｒ在Ｐ（Ｘ）上的限制是单射；Ｘ是Ｐ（Ｘ）与ＳＰ（Ｘ）的直积     

Banach空间一些凸性等价的条件

证明了若Ｘ是自反的强光滑空间，则Ｘ是（ＨＲ）当且仅当Ｘ是局部的一致凸的；若Ｂａｎａｃｈ空间Ｘ具有（）性质，则Ｘ是强凸的当且仅当Ｘ是局部的一致凸的     

广义Gottlieb集的提升

映射ｐ：Ｅθ→Ｘ是由θ：Ｘ→Ｂ诱导出的主纤维化，ｇ：Ａ→Ｘ是一个ｖ－循环的映射，这里ｖ：Ｘ→Ｘ是一映射，若映射ｖ：Ｅ→Ｅθ和映射ｐ：Ｅ→Ｘ满足ｐｖｖｐ．给出在一般条件下ｇ：Ａ→Ｘ存在ｖ－循环的提升的充要条件     

两类矩阵方程的张量积解法

利用矩阵的张量积方法,给出线性矩阵方程ＡＸ－ＸＢ＝Ｃ及Ｘ－ＡＸＢ＝Ｃ的解．     

完备Brouwerian格上Fuzzy关系方程极小解存在的一个充分条件

在完备Ｂｒｏｕｗｅｒｉａｎ 格上证明如果方程∨ｉ∈Ｊ（ ａｉ ∧ｘｉ） ＝ ｂ 的解集Ｘ２ 非空且ｂ 有不可约完全并既分解，则Ｘ∈Ｘ２ ，至少存在Ｘ２ 的一个极小元Ｘ＊ 满足Ｘ＊ ≤Ｘ．     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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-