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AN^2 APPLICATION IN THE METRODS OF POPULATION geography

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Journal of Geographical Sciences 1995年第1期5卷 87-90页

作者： zhang shulin(Dept. of geography, chongqing teachers college, chongqing 630047,People’s Republic of china)

This paper tries to present another theoretical view in the study of population geography by applying the principle of artificial neural *** is our view that the approach to population geography study is of two kinds ... 详细信息

关键词： Aritifical Neural Network (AN^2) connectionism population geography research approach analysis by synthesis

BGP reflection functors in root categories

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Science china Mathematics 2005年第8期48卷 1033-1045页

作者： XIAO Jie, zhang Guanglian1’2 & ZHU Bin department of Mathematical Sciences, Tsinghua University, Beijing 100084, china department of Mathematics, Yancheng teachers college, Yancheng 224002, china department of Mathematical Sciences Tsinghua University Beijing China department of Mathematics Yancheng Teachers College Yancheng China

We define the BGP-reflection functors in the derived categories and the root categories. By Ringel's Hall algebra approach, the BGP-reflection functor is applicable to obtain the classical Weyl group action on the Lie... 详细信息

关键词： m-cycle complexes, derived categories, BGP-reflections, Kac-Moody algebras.

ON THE ORDERING OF A CLASS OF HEXAGONAL CHAINS WITH RESPECT TO MERRIFIELD-SIMMONS INDEX

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Systems Science and Mathematical Sciences 2000年第2期13卷 219-224页

作者： zhang Lianzhu (department of Mathematics, zhangzhou teachers college, zhangzhou, Fujian 363000, china) department of Mathematics Zhangzhou Teachers College Zhangzhou Fujian 363000 China

In this paper, we give the ordering of single-corner hexagonal chains with respect to Merrifield-Simmons index. At the same time, the hexagonal chain with the second largest Merrifield-Simmons index is also determined.

关键词： Hexagonal system hexagonal chain single-corner chain linear chain independent set Merrifield-Simmons index.

The Green formula and heredity of algebras

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Science china Mathematics 2005年第5期48卷 610-617页

作者： zhang Guanglian & WANG Shuai department of Mathematical Sciences, Tsinghua University, Beijing 100084, china Yancheng teachers college, Yancheng 224002, china department of Mathematics, Johns Hopkins University, Baltimore, MD21218, U.S.A. department of Mathematical Sciences Tsinghua University Beijing China Yancheng teachers college Yancheng China department of Mathematics Johns Hopkins University Baltimore USA

Let A be a finite dimensional algebra over a field k with q elements. It is shown that the Green formula is true in mod-A if and only if A is a hereditary algebra.

关键词： Green formula idempotent ideal hereditary algebra.

应用题结构分析训练对提高小学生解题能力的实验研究

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心理学报 1999年第1期31卷 53-59页

作者：姚飞张大均重庆建筑高等专科学校重庆400030 西南师范大学重庆400715

实验以小学四年级学生为被试，采用完全随机化等组设计。实验组采用应用题结构分析训练教学模式，控制组在同等时间内，采用常规教学模式作相同的习题练习。实验结果表明：（１）应用题结构分析训练可显著提高小学生解应用题的能力，中... 详细信息

实验以小学四年级学生为被试，采用完全随机化等组设计。实验组采用应用题结构分析训练教学模式，控制组在同等时间内，采用常规教学模式作相同的习题练习。实验结果表明：（１）应用题结构分析训练可显著提高小学生解应用题的能力，中等生受益最大；（２）该模式训练效果与学生的智力水平呈中等程度正相关；（３）学生对该训练模式持肯定态度，反应积极。

关键词：应用题解剖能力能力测验教学心理学小学生

Modulation on the collective response behavior by the system size in two-dimensional coupled cell systems

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Science china(Physics,Mechanics & Astronomy) 2006年第3期49卷 304-312页

作者： zhang Jiqian1, SHEN Chuansheng1,2 & CUI Zhifeng1 1. college of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, china 2. department of Educational Technology, Anqing teachers college, Anqing 246011, china college of Physics and Electronic Information Anhui Normal University Wuhu China department of Educational Technology Anqing Teachers College Anqing China

By the intracellular calcium ionic minimal model proposed by Berridge, we investigated the collective response of two-dimensional (N×N) coupled cell systems to the external stimulation using numerical simulation methods. With a coupled intensity fixed and an appropriate coupled cell number chosen, the kinetic system size resonance was discovered. At the same time, it was found that the system size responding to the external stimulation for different coupled intensities transferred too, especially when the coupled intensity increased, the range of the corresponding system size extended. These phe- nomena illustrate that the coupled cell number and the coupled intensity can play con- structive roles in noisy coupled systems, by which the biology system would probably improve its capability to respond to the external stimulation.

关键词： cell coupling,collective response,system size resonance

THE　REACTION　OF　p－NITROPHENYLSULFONYLACETONITRILE　WITH　α，β－UNSATURATED　ESTERS　AND　NITRILES

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Chinese Chemical Letters 1996年第4期7卷 305-308页

作者： Guo Ren YUE and Zheng zhang(department of Chemistry, zhangye teachers’ college.zhangye,734000department of Chemistry, Nanjing University, Nanjing, 210093) department of Chemistry Zhangye Teachers' College Zhangye 734000 department of Chemistry Nanjing University Nanjing 210093

Michael addition and an unexpected tandem addition-rearrangement reaction occurred when p-nitrophenylsulfonylacetonitrile(1)reacted with α-β-unsaturated estcrs and nitriles (2a-f).Different products can be obtained ... 详细信息

关键词：用成 ESTERS NITRILES OF REACTION THE UNSATURATED WITH AND

Cysteinyl leukotriene receptor 1 partially mediates brain cryoinjury in mice

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Acta Pharmacologica Sinica 2007年第7期28卷 945-952页

作者： Qian DING~2,San-hua FANG~2,Yu ZHOU~2,Li-hui zhang~3,Wei-ping zhang~2,Zhong CHEN~2,Er-qing WEI~(2,4)~2 department of Pharmacology,School of Medicine,Zhejiang University,Hangzhou 310058,china ~3 department of Pharmacology,Schoolof Medicine,Hangzhou teachers college,Hangzhou 310012,china department of Pharmacology School of Medicine Zhejiang University Hangzhou China department of Pharmacology School of Medicine Hangzhou Teachers College Hangzhou China

Aim:To determine whether the cysteinyl leukotriene receptor 1（CysLT1receptor）modulates brain cryoinjury and whether the CysLT1receptor antagonist pranlukastexerts a time-dependent protective effect on cryoinjury in ***:Braincryoinjury was induced by applying a liquid nitrogen-cooled metal probe to thesurface of the skull for 30 *** lesion,neuron density,and endogenous IgGexudation were observed 24 h after *** and the expressionof the CysLT1receptor were detected by RT-PCR and immunoblotting,and thelocalization of the receptor protein by double ***:ThemRNA and protein expressions of the CysLT1receptor were upregulated in thebrain 6-24 h after cryoinjury,and the CysLT1receptor protein was primarily local-ized in the neurons,not in the astrocytes or ***-injury treatments withmulti-doses and a single dose of pranlukast （0.1 mg/kg） attenuated cryoinjury;postinjury single dose （0.1 mg/kg） at 30 min （not 1 h） after cryoinjury was ***:The CysLT1receptor modulates cryoinjury in mice at leastpartly,and postinjury treatment with its antagonist pranlukast exerts the protec-tive effect with a therapeutic window of 30 min.

关键词： cysteinyl leukotriene receptor antagonist pranlukast cryoinjury neuroprotection

Changes of dipole moment in intramolecular proton transfer process of perylenequinone

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Chinese Science Bulletin 1998年第16期43卷 1380-1384页

作者： zhang Hongyu department of Biology, Provincial Key Laboratory of Animal Resistance Biology, Shandong teachers University, Jinan 250014, china department of Biology Provincial Key Laboratory of Animal Resistance Biology Shandong Teachers University Jinan China

Semiempirical quantum chemistry method AM1 was employed to calculate dipole moment of perylenequinone (PQ) in intramolecular proton transfer (IPT) process. It was found that there existed a maximum of dipole moment in all IPT process except PQ anion (PQ) which possessed a minimum. Moreover, almost all states of PQ except ground state had high changes in dipole moment. All of these laid foundations to clarify solvent effects in IPT of PQ.

关键词： perylenequinone intramolecular proton transfer dipole moment AM1 method.