蕴含K5-P2可图序列的刻划

对于给定的图H,称π是蕴含H可图的,如果π有一个实现包含H作为子图.K k,C k,Pk分别表示k阶完全图,圈长为k的圈和路长为k的路.K 5-P2表示从5阶完全图中删去长为2的路.Luo Rong[14]考虑了蕴含C k可图序列的刻划问题,并刻划了当k=3,4,5时,蕴含C k的可图序列.此外,Luo等人[15]刻划了蕴含K 4的可图序列,Eschen和Niu[16]刻划了蕴含K 4-e的可图序列,Yin Jianhua等人[23]刻划了当r=2,s=3和r=2,s=4时,蕴含K r,s的可图序列,其中K r,s是r×s完全二部图.Hu Lili等人[3-5]刻划了蕴含K 5-C4,K 5-Z4,K 5-E3的可图序列,徐正华等人[18]刻划了蕴含K1,4 e的可图序列,王艳[17]刻划了蕴含K 1,4 P2的可图序列,刘明静[13]等人刻划了蕴含K 5-Z5的可图序列.本文刻划了当n≥5时,蕴含K 5-P2的可图序列.     

蕴含K5-Z5可图序列的刻划

对于给定的图H,称π是蕴含H可图的,如果π有一个实现包含H作为子图.K k,C k,Pk分别表示k阶完全图,圈长为k的圈和路长为k的路.Z 5是由一个公共顶点的C3和P2组成的图,K 5-Z5表示从5阶完全图中删去Z 5的5条边.Luo Rong[13]考虑了蕴含C k可图序列的刻划问题,并刻划了当k=3,4,5时,蕴含C k的可图序列.此外,Luo等人[14]刻划了蕴含K 4的可图序列.Eschen和Niu[15]刻划了蕴含K 4-e的可图序列.Yin Jianhua等人[20]刻划了当r=2,s=3和r=2,s=4时,蕴含K r,s的可图序列,其中K r,s是r×s完全二部图.Hu Lili等人[3-5]刻划了蕴含K 5-C4,K 5-Z4,K 5-E3的可图序列,徐正华等人[16]刻划了K1,4 e的可图序列.本文刻划了当n≥5时,蕴含K 5-Z5的可图序列.     

蕴含K5-K2可图序列的刻划

对于给定的图H,称π是蕴含H可图的,如果π有一个实现包含日作为子图.Kk,Ck,Pk分别表示k阶完全图,圈长为k的圈和路长为k的路.K5-P2表示从5阶完全图中删去长为2的路.LuoRong[14]考虑了蕴Ck可图序列的刻划问题,并刻划了当k=3,4,5时,蕴含Ck的可图序列.此外,Luo等人[15]刻划了蕴含K4的可图序列,Eschen和Niu[16]刻划了蕴含K4-e的可图序列,Yin Jianhua等人[23]刻划了当r=2,S=3和r=2,S=4时,蕴含Kr,s的可图序列,其中Kr,s是r×s完全二部图.Hu Lili等人[3-5]刻划了蕴含K5-K4,K5-Z4,K5-E3的可图序列,徐正华等人[18]刻划了蕴含K1,4+e的可图序列,王艳[17]刻划了蕴含K1,4+P2的可图序列,刘明静[13]等人刻划了蕴含K5-Z5的可图序列.本文刻划了当n≥5时,蕴含K5-P2的可图序列.     

蕴含(K_4-e)+K_3可图序列的刻划

对于给定的图H,称π是蕴含H可图的,如果π有一个实现包含H作为子图.K k,C k,Pk分别表示k阶完全图,圈长为k的圈和路长为k的路.本文刻划了当n≥6时,蕴含(K 4-e)+K3的可图序列,其中,(K 4-e)+K3如下图所示.     

关于蕴含K_(1~r,s)可图序列的一个充分条件

设K_(1~r,s)为k_1×k_2×…×k_(r+1)的完全(r+1)部图,其中k1=k2=…=kr=1,kr+1=s.将YIN提出的蕴含K12,s、K13,s可图序列的一个充分条件推广到一般情况,给出了s≥r≥2,n≥s+r条件下,n项可图序列π=(d1,d2,…,dn)蕴含K1r,s可图的一个充分条件.     

蕴含K5-Z4可图序列的刻划

对于给定的图,称是蕴含可图的,如果有一个实现包含作为子图.Kk,Ck,Pk分别表示K阶完全图,圈长为k的圈和路长为k的路.Z4表示K-4-P2.K5-Z4表示从5阶完全图中删去的4条边.本文刻划了当n≥5时,蕴含K5-Z4的可图序列.     

蕴含K_(1,5)+P_2可图序列的刻画

对于给定的图H,如果度序列π有一个实现包含H作为子图,则称π是蕴含H可图的.考虑了下述经典Tur偄n型极值问题的变形:确定最小的偶整数σ(H,n),使得每个满足σ(π)≥σ(H,n)的n项可图序列π=(d1,d2,…,dn)是蕴含H可图的,其中σ(π)=∑di from i=1 to n.并在此基础上刻画了蕴含K1,5+P2可图序列,确定了当n≥7时,σ(K1,5+P2,n)的值.关键词:图;度序列;蕴含K+P可图序列     

蕴含Kr+1-K1,t可图序列的极值问题

序列S称为蕴含K_m-H可图序列如果S有一个实现包含K_m-H作为子图,本文给出了序列π∈GS_n是蕴含 K_(r 1)- K_(1,t)可图序列的充分条件.     

蕴含K1,4+2e的可图序列

给出整数序列π(d1,d2,…,dn)蕴含K1,4 2e可图的1个充分条件和1个充要条件,其中K1,4 2e是向完全二部图K1,4添加2条边后构成的简单图.     

关于蕴含Ramsey数r_(pot)(K_n-ke,K_t-qe)问题

对于一个非增的非负整数序列π=(d_1,d_2,,…,d_n),如果π是某个n阶简单图G的度序列,则称π是可图序列,并称G是π的一个实现.给定一个图G,可图序列π称为是蕴含G可图的,如果π有一个实现包含G作为子图.对于2个简单图G_1和G_2,存在一个最小的正整数k,使得对于任何k项可图序列π,都满足π是蕴含G_1可图的或者π的补序列π是蕴含G_2可图的,正整数k记为r_(pot)(G_1,G_2),称为是G_1和G_2的蕴含Ramsey数.Busch等[3]给出了r_(pot)(G,K_t)的一个下界,并确定了当n≥t≥3时,r_(pot)(K_n,K_t)的值.笔者进一步给出了r_(pot)(G,K_t-qe)的一个下界,并确定了当n≥t≥4时,r_(pot)(Kn,K_t-e)之值,其中K_t-qe表示从t阶完全图K_t中去掉q条独立边后所得到的图.     

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-