检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

Perfect Partitions

数学进展 1985年第3期 287-288页

作者：王萼芳

A partition of n is said to be perfect when it contains just one partition of everynumber up to n.For any number n,the n-partition(1,1,…,1)is always perfectand for any odd number n=2κ+1,the n-partition(1,2,…,2)is always perfecttoo.These two kinds of perfect partitions are called trivial perfect partitions.Forarbitrary n,a non-trivial perfect n-partition does not always exist. In this paper

关键词： partition Perfect perfect trivial formulas 侧石 integer

ARTIFICIAL INTELLIGENCE IDENTIFICATION OF MOLECULAR STRUCTURES OF ORGANIC COMPOUNDS (SGSSP PROGRAM)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1983年第9期28卷 1286-1287页

作者：胡鑫尧王心枢 Department of Chemistry and Chemical Engineering Qinghua University Beijing Department of Chemistry and Chemical Engineering

The strueture generator and substructure search computer program (SGSSp) has been used in identification of molecular struclures. It can generate all structures of isomers (cyclic and acylic) from empirical formulas.T... 详细信息

关键词： isomers empirical generator formulas bonds analogous statements thousand FORTRAN ought

THE INDICES OF CONVERGENCE FOR IRREDUCIBLE AND NEARLY REDUCIBLE BOOLEAN MATRICES

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1990年第13期35卷 1138-1139页

作者：邵嘉裕 Department of Applied Mathematics Tongji University Shanghai 200092 PRC

The index of convergence k（A）of a square Boolean matrix A is defined to be the least nonnegative integer k such that Ak= Ak1 for some k1>k; and the index of convergence k（D） of a digraph D is just the index of con... 详细信息

关键词： integer nonnegative Schwarz Boolean connected formulas letter length indices

ON CHROMATIC POLYNOMIALS OF TWO CLASSES OF GRAPHS

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1987年第16期32卷 1147-1148页

作者：刘儒英 Qinghai Normal University Xining

Up to the present, there are few classes of graphs of which chromatic polynomials can be computed with formulas. For most graphs, computing their chromatic

关键词： chromatic CLASSES spanning formulas complement letter 二土刃刀石飞 length

SXNGULAR INTEGRALS IN SEVERAL COMPLEX VARIABLES(Ⅰ)——THE HENKIN INTEGRALS ON STRICTLY PSEUDOCONVEX DOMAINS

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1982年第11期27卷 1157-1158页

作者：龚昇史济怀 University of Science and Technology of China Hefei Institute of Applied Mathematics Academia Sinica Beijing

In several complex variables, the Henkin-Ramirez kernels and the Stein-Kerzman kernels of strictly pseudoconvex domains are very important. It is noticed that solutions of problems may be represented explicitly by the... 详细信息

关键词： noticed explicitly strictly kernel deleted 石口 formulas

STUDIES ON BIS (ALKENYLCYCLOPENTADIENYL) METAL DERIVATIVES OF TITANIUM, ZIRCONIUM AND HAFNIUM

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1983年第7期28卷 1003-1004页

作者：陈寿山魏荣宝王积涛 Institute of Elemento-Organic Chemistry Nankai University Tianjin Institute of Elemento-Organic Chemistry

A series of new organometallic compounds have been synthesized by sodium alkenylcyclopentadienide reacting with metal chlorides in THF, the compounds with the general formula （η5RC5H4）2MCl2, where M=Ti, Zr, Hf; R=a... 详细信息

关键词： allyl reacting readily bonds bromide fairly titanium iodide hardly formulas

The Degree of Unsolvability of Models

在线全文

学校读者我要写书评

暂无评论

数学进展 1985年第2期 190-191页

作者：岳其静 Beijing Normal University

The purpose of this paper is to describe the complexity of models by theirdegrees of unsolvability,J.Richter defined the degree of a structure to be deg ()=sup{deg(),deg(R_i),i=1,…,n},Where is a model for afinite language L={R_i,i=1,…,n}and the universe of is a subset of ω. Shepointed out that, according to her definition, there can be models which areisomorphic but their degrees are different.Also,her discussions are restricted tofinite languages and models whose universes are subsets of ω.

关键词： restricted universe Richter discussions subset briefly arbitrary valent infinite formulas

Hand Rearing Common Zebra (Equus quagga)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Animal Husbandry and Feed Science 2014年第1期6卷 4-5页

作者： Liu He Wu Zhaozheng Zhang Jinguo Wang Zezhong Wang Yue Beijing Zoo

This paper documented a successful hand rearing process of a 43-day-old zebra which was raised for 174 d and weaned at 217 days of age. The hand-rearing condition was recorded from nursing techniques, medical care and... 详细信息

关键词： Common zebra Hand rearing formulas

A NEW MULTIFUNCTIONAL APPARATUS FOR MEASURING THERMOPHYSICAL PROPERTIES BASED ON QUASI-STEADY TECHNIQUE

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1982年第1期27卷 127-128页

作者：陈则韶葛新石 Universisy of Science and Technology of China

In this letter the design and construction of a new multifunctional apparatus for measuring thcrmophysical properties based on quasi-steady technique is reported. With this apparatus thermophysieal properties such as ... 详细信息

关键词： letter apparatus latent quasi determ 三一 formulas