计算一类连续运算的有效并行算法

提出了计算一类连续运算的一种更有效的并行算法，当Ｎ足够大时，其加速Ｓｐ≈ｐ／２，效率Ｅｐ≈１／２。在此基础上建立了求解一阶线性递归方程组的一种新算法，其加速Ｓｐ≈２ｐ／５，效率Ｅｐ≈２／５，其中ｐ为所需的处理机数。     

一个包含Smarandache原函数与一类自然数乘积之和的方程

设p为素数,n为任意正整数,我们定义Smarandache原函数Sp（n）为最小的正整数k,使得pn｜k!,即Sp（n）=m in{k：k∈N,pn｜k!}。利用初等数论方法研究了方程Sp（1×2）＋Sp（2×3）＋…Sp（n（n＋1））=Sp（n（n＋1）（n＋2）/3）的可解性,并给出了这个方程的所有正整数解。     

p53对STK11的转录调控研究

PJ综合征(Peutz-Jeghers syndrome)是一种常染色体显性遗传疾病.其致病基因所编码的蛋白质为一种丝氨酸/苏氨酸蛋白激酶(STK11).STK11可以激活AMPK,p53等多条信号通路.文中在克隆了STK11的基本启动子区域基础上,用生物信息学分析预测该区域内可能存在p53结合位点和Sp1结合位点.EMSA结果证实了信息学分析的预测.Sp1结合位点核心碱基定点突变后,其PGL3重组突变体质粒萤光素酶活性下降1.9倍;p53结合位点核心碱基的定点突变后,PGL3重组突变体质粒萤光素酶活性下降14.6倍,均有统计学意义.利用内源表达STK11的L02细胞株,瞬时转染pcDNA3.1-myc-his-B(-)-p53,经Real-time PCR和Western blotting检测发现,p53过表达可以上调STK11的表达,因此p53对STK11的表达有正反馈调节放大作用.     

p次幂原数函数Sp（n）和它的均值性质

设p为素数,n为任意的正整数,我们定义p的原数函数为最小的正整数m,使得pn｜m!即就是SP（n）=min{m∶pn｜m!},其中p为素数.本文研究了这一类Smarandache数论函数p次幂原数函数Sp（n）的均值性质,并给出关于｜Sp（k（n＋1））-Sp（kn）｜和｜Sp（k（n＋1））-Sp（kn）｜2的渐近公式.     

p次幂原数函数Sp(n)和它的均值性质

设p为素数,n为任意的正整数,我们定义p的原数函数为最小的正整数m,使得pn|m!即就是SP(n)=min{m∶pn|m!},其中p为素数.本文研究了这一类Smarandache数论函数p次幂原数函数Sp(n)的均值性质,并给出关于|Sp(k(n+1))-Sp(kn)|和|Sp(k(n+1))-Sp(kn)|2的渐近公式.     

带参数的对偶Hardy—Hilbert型不等式的改进

利用加强不等式对Hardy-Hilbert型不等式做了改进,建立了一些新的形如∞∑(n=1) ∞∑(m=1)(anbn/max{m,n})<{∞∑(n=1)[pq-θq/n(1/p)apn}1/p{{∞∑(n-=1)[pq-θp/n(1-q)]bqn}1/q(1-R)k的不等式,其中 R=[Sp(α,γ)-Sq(βγ)]2≠0.     

氧化剂和金属离子对刚果红光化学反应的影响

在紫外光作用下,采用静态方法研究了氧化剂和金属离子对刚果红光化学反应的影响.结果表明,氧化剂对刚果红光化学反应的影响较大,其加速降解顺序为KIO4>K2S2O8>KBrO3>H2O2,加速脱色顺序为KIO4>K2S2O8≈KBrO3>H2O2;金属离子对刚果红光化学反应的影响较小,Fe2 /Cu2 /Al3 /Y3 /La3 易与刚果红生成配合物,Mn2 /Zn2 能够稍微加速刚果红光化学脱色且作用相似;HO·是导致刚果红发生光化学脱色的一个重要因素.     

Sp1调控FoxM1在卵巢癌中的表达

探讨Sp1调控转录因子FoxM1在卵巢癌中的表达。免疫组织化学染色验证FoxM1在卵巢癌组织中高表达,Spearman'rho秩相关分析Sp1与FoxM1在卵巢癌组织中的表达相关性;双荧光素酶报告系统检测Sp1对FoxM1的调控作用;Real-time quantitative RT-PCR和蛋白免疫印迹技术验证Sp1对FoxM1的调控作用。FoxM1在大于60%的卵巢癌组织中呈阳性表达(阳性率33/42≈79%),并且与Sp1的表达显著相关(r=0.809,P0.01);Sp1可以结合并激活Foxm1启动子(P0.05);上调Sp1表达可以激活FoxM1在卵巢癌中的表达(P0.05),而干扰Sp1后可以下调FoxM1的表达(P0.05)。Sp1参与调控增殖相关转录因子FoxM1在卵巢癌中的表达。     

e~+e~-湮灭枚举标度破坏的原因—强子喷注与强子—强子碰撞高横动量疑难的铨释

Feynman变量x_F=2p/s~(1/2)不适合强子动量分布。当用重整化半群标度变量x=p/

,p_⊥/并注意强子喷注的动量与横动量的平均值约为中心区的两倍,便得到与实验符合的标度律。高能强子-强子碰撞产生中心区,碎裂区与高p_⊥喷注;σ_T≈σ_T~CR,σ_T~F/σ_T≈10~(-2),σ_T~J/σ_T≈10~(-4),三者的合成分布与高p_⊥的CCOR与CCRS数据符合(s~(1/2)=53Gev)。量子场的长度维度(Dimensiongrad)与反常维度组成的短距离参数α(g_R)足以描述实验数据,微扰论的顶角表现发散度的总和的贡献与反常维度同一数量级。     

单扫描示波极谱法测定酒石酸中的马来酸

建立了极谱测定酒石酸中马来酸含量的方法。在4.8×10-2mol/LH3PO4-KH2PO4(pH1.12)缓冲溶液中,马来酸极谱还原波的峰电位Ep为-0.77V(vs.SCE),其二阶导数峰峰电流i″p与马来酸浓度在3.0×10-7～4.0×10-4mol/L范围内呈线性关系(r=0.9974,n=8)。10次测量1.6×10-5mol/L马来酸还原波二阶导数峰峰电流,相对标准偏差RSD为2.1%。1000(w/w)倍酒石酸不干扰测定。通过对四种合成样品中马来酸的测定和回收率试验考察该方法,结果令人满意。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with