查询词典 N.z.

The pupose of the research is to develops public key encryption and digital signature shemes based on matrix canonical decomposition problem, or matrix diagonalization problem over Z/n, the ring of integers with modulo-n addition and multiplication in particular, where n is an RSA modulus.

本课题研究基于矩阵经典分解问题，特别是Z/n上矩阵对角化问题的公钥密码与数字签名算法，其中n是一个RSA模数。新算法采用由一个矩阵多项式构成的多维单向陷门函数，其单向性由矩阵对角分解问题(即通过相似变换将矩阵化为对角型的问题)的复杂性来保障，对该函数求逆的陷门由矩阵的特征值或特征向量提供。

Let F=LF be a s-closed local formation such that every minimal non-F-groups is solvable. It is proved that 1 If every cyclic subgroup of of order 4 and every minimal subgroup of G are contained in, then G is a F-group. 2 If there exists a normal subgroup N of G such that G/N∈F and every cyclic subgroup of N of order 4 is weakly c-normal in G and every element of N of prime order is contained in Z(superscript f subscript ∞), then G is a F-group.

设F=LF是一个子群闭的局部群系，满足每个极小非F-群是可解群，证明了：1如果G的任意极小子群和任意4阶循环子群都含于Z中，那么G是F-群；2如果存在G的正规子群，使得G/N∈F，且N的任一4阶循环子群在G中弱c-正规，N的任一素数阶元含于Z中，那么G是F-群。

For k≥1, an isometry φ between codes over Zsubscript P(superscript k+1 and codes over Z(subscript P^2) is introduced and used to give a generalization of the Gray map φ: Z(superscript n subscript 4)→F(superscript 2n subscript 2). Furthermore, by means of this isometry, the concept of negacyclic codes is extended to codes over the ring Zsubscript P(superscript k+1. A characterization of these codes in terms of their images under φ is given. It is also shown that the generalized Gray map image of the 1-P(superscript k-cyclic code is a distance-invariant quasi-cyclic code.

文章引入了Z下标 P(上标 k+1码和Z(下标 P^2)码之间的等距同构φ(k≥1)；利用φ把Gray映射φ：Z(上标 n 下标 4)→F(上标 2n 下标 2)推广为φ：；而且利用φ，负循环码概念被推广到Z下标 P(上标 k+1码，得到了1-P(上标 k-循环码；依据等距同构φ，给出了这些码的表示；也证明了1-P(上标 k-循环码在推广的Gray映射下的像是距离不变的准循环码。

In the point reactor model, the probability function(n, t0, t) of a source neutron at time t0 leading to n neutrons at time t is dealt with. The non-linear partial differential equation for the probability generating function G(z; t0, t) is derived. By solving the equation, we have obtained an approximate analytic solution for a slightly prompt supercritical sys tem.

在点堆模型基础上，考虑了在t0时刻系统引入一个源中子，在t时刻产生n个中子的概率(n， t0， t)推导了概率生成函数G(z； t0， t)所满足的偏微分方程，并得到了近似解。

Results show that, by using thionyl chloride and N,N-dimethyl formamide as chlorinating reagent and dichloromethane as solvent and taking -15℃ as reaction temperature, Z-iomer crystals with pale white color and stable to temperature can be obtained with an overall yield of 70%.

以2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酸为原料，经盐酸化、氯代等反应合成了Z-2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酰氯盐酸盐；氯代时以用亚硫酰氯和N，N-二甲基甲酰胺的混合物代替五氯化磷作氯化剂，并考察了温度和溶剂对氯代产物中Z-异构体和E-异构体收率的影响。

N has set up this Z group in February 1994, the first enterprise group in the industry in Wenzhou area.

早在1994年2月，N组建温州地区同行业第一家企业集团——Z集团；1997年7月，组建ZT集团第一家股份制企业——Z股份有限公司；1999年7月，全国工商联公布会员企业调查结果，Z集团综合实力名列全国百强民营企业的第8名；去年，Z的工业产值为42亿，利税5.05亿，出口2800万美元。

Directed under plate tectonics theories, author applied the relationship between orogenyy belt and basin, analyzation of proto-type basin restoration of Paleo-structures etc to systematically draw the Paleo-structural maps and Paleo-sedimental photographical maps on Z, O, S, D, C, P, T, J, K, E, N〓j, N1〓k, N〓k etc in Tarim basin.

以板块构造理论为指导，运用造山带与盆地、原型盆地分析、古构造分析等分析方法，系统编制了Z、O、S、D、C、P、T、J、K、E、N〓j、N〓K，N〓K等盆地及周缘古构造岩相图，全面系统地研究和恢复了塔里木大型叠合复合盆地构造演化历史，并将塔里木盆地构造演化史划分为7个构造演化阶段。

The invention is characterized in that phthalide of general formula, wherein n and X have the meaning cited in the description, is reacted with nitrogen heterocycles of general formula: H-Z, wherein Z has the meaning cited in the description, or with nitrogen heterocycle metal salts of general formula in the presence of an aprotic polar diluent and optionally in the presence of a basic auxiliary reaction agent.

本发明涉及制备通式的2－杂环基甲基苯甲酸衍生物的新的方法，其中n、X和Z具有说明书中给出的意义，该方法提供高收率和高纯度，其特征是，通式的2－苯并呋喃酮，其中n和x具有说明书中给出的含义，与通式的氮杂环：H－Z，其中Z具有说明书中给出的意义，或与通式的氮杂环的金属盐在质子惰性极性稀释剂中并任选在碱性反应助剂存在下反应。

The screening method of seven alleles (Z-6,Z-4,Z -2,Z,Z+2,Z+4 and Z+6) in then dinucleotide tandem repeat sequence was st udied. These alleles constitute a microsatellite DNA marker upstream of the tran scription initiation site on the aldose reductase gene.

湖南医科大学学报000103 摘要：研究了醛糖还原酶基因转录起始点上游-2.1kb处的微卫星DNA标记--n二核苷酸串联重复序列7种等位基因(Z+6，Z+4，Z+2，Z，Z-2，Z-4和Z-6)的筛选方法。

The screening method of seven alleles (Z-6,Z-4,Z -2,Z,Z+2,Z+4 and Z+6) in then dinucleotide tandem repeat sequence was st udied. These alleles constitute a microsatellite DNA marker upstream of the tran scription initiation site on the aldose reductase gene.

研究了醛糖还原酶基因转录起始点上游-2.1kb处的微卫星DNA标记--n二核苷酸串联重复序列7种等位基因(Z+6，Z+4，Z+2，Z，Z-2，Z-4和Z-6)的筛选方法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。