Chinese︱Feedback︱Save this page

Login︱Register

• Elaborating Academic Views 　　　　 • Exchanging Innovative Ideas
• Protecting Intellectual Properties 　　• Fast Sharing Science Papers

Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China

Home > Papers > Mathematics

There are 1488 papers published in subject: since this site started.

Results per page:

1488 Total, 149 Pages | << First < Previous 139 140 141 142 143 144 145 Next > Last >>

Select Subject

All (8831)

Agronomy (158)

Animal Husbandry,... (64)

Aquatic Science (16)

Astronomy (36)

Aviation (22)

Basic Medicine (184)

Biology (504)

Chemical Engineering (103)

Chemistry (635)

Civil and Archite... (105)

Clinical Medicine (236)

Computer Science ... (924)

Dynamic and Elect... (121)

Earth Science (119)

Economics (67)

Education (31)

Electrics, Commun... (927)

Energy Science an... (67)

Engineering and T... (15)

Environmental Sci... (140)

Food Science and ... (63)

Forestry (36)

Hydraulic Enginee... (40)

Mechanics (240)

Metallurgical Eng... (32)

Mine Engineering ... (38)

Nuclear Science a... (21)

Pharmacy (98)

Physics (920)

Preventive Medici... (37)

Psychology (20)

Security Science ... (17)

Sports Science (6)

Surveying and Map... (15)

Textile Science a... (16)

Traditional Chine... (56)

Transportation En... (57)

Second-level Subject

Algebra(146)
Applied Mathematics(88)
Applied Statistical Mathe...(23)
Combinatorial Mathematics(39)
Computational Mathematics(156)
Discrete Mathematics(1)
Dynamical System(65)
Function(82)
Functional Analysis(81)
Fuzzy Mathematics(10)
Geometry(63)
History of Mathematics(2)
Non-standard Analysis(2)
Number Theory(49)
Operational Research(148)
Ordinary Differential Equ...(85)
Other Subjects of Mathema...(4)
Partial Differential Equa...(173)
Probability Theory(123)
Topology(16)

Rank

Results per page:

1488 Total, 149 Pages | << First < Previous 139 140 141 142 143 144 145 Next > Last >>

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.


	1. Presentations for finite complex reflection
	Shi Jian Yi
	Mathematics 25 February 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:We survey our achievements on the classification of congruence classes of presentations for the finite complex reflection groups. The classification is described in terms of certain graphs for the imprimitive groups, and is based on the computer programmes for the primitive groups.
	TO cite this article:Shi Jian Yi. Presentations for finite complex reflection[OL].[25 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1595


	2. An Efficient Algorithm for Computing Minimal Polynomials of Polynomial Matrices
	Bo Yu,Yanyan Xu
	Mathematics 16 February 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:In this paper, an efficient algorithm for computing the minimal polynomial of a polynomial matrix is presented. It determines the coefficient polynomials term by term from lower to higher degree. By using a random vector and randomly shifting, it requires no condition on the input matrix. Comparison with other algorithms in both theoretical complexity analysis and computational tests are given to show its effectiveness.
	TO cite this article: Bo Yu,Yanyan Xu. An Efficient Algorithm for Computing Minimal Polynomials of Polynomial Matrices[OL].[16 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1554

Saved Papers

Saved Papers


	3. Controllability of Semilinear Evolution Inclusions with Nonlocal Conditions
	Wang Weizhong,Fan Hongxia
	Mathematics 05 February 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:In this paper, the controllability of semilinear evolution inclusions with nonlocal conditions in Banach spaces is investigated when the multivalued map has nonconvex values. The approach used here is a fixed point theorem due to Covitz and Nadler for contraction multivalued maps.
	TO cite this article:Wang Weizhong,Fan Hongxia. Controllability of Semilinear Evolution Inclusions with Nonlocal Conditions[OL].[ 5 February 2005] http://en.paper.edu.cn/en_releasepaper/content/1540


	4. Homological properties of modules characterized by matrix
	Xiaoxiang Zhang,Jianlong Chen
	Mathematics 26 January 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let R be a ring and A an $\beta\times\alpha$ matrix over R, where $\alpha$ and $\beta$ are two card numbers. We investigate some homological properties of modules over R by matrices. Thus, $(\alpha, \beta)$-injective (resp., $(\alpha, \beta)$-flat) modules and $(\alpha, \beta)$-coherent rings are introduced and investigated. Some known results on generalized injective (resp., projective, flat) modules as well as ($\pi$-)coherent rings are extended.
	TO cite this article:Xiaoxiang Zhang,Jianlong Chen. Homological properties of modules characterized by matrix[OL].[26 January 2005] http://en.paper.edu.cn/en_releasepaper/content/1503


	5. Infinite Periodic Solutions to a Class of Second-Order Nonlinear Neutral Delay Equations
	Yuan-Tong Xu,Xiao-Bao,Shu,Wu,hongwu
	Mathematics 10 January 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:By means of variational structure and $Z_2$ group index theory, we obtain multiple periodic solutions to a class of second-Order neutral differential equations $$ x
	TO cite this article:Yuan-Tong Xu,Xiao-Bao,Shu,Wu,hongwu. Infinite Periodic Solutions to a Class of Second-Order Nonlinear Neutral Delay Equations[OL].[10 January 2005] http://en.paper.edu.cn/en_releasepaper/content/1448


	6. Endpoint Estimates for Maximal Commutators in non-homogeneous spaces
	Guoen Hu,Yan Meng,Dachun Yang
	Mathematics 17 December 2004
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Certain weak type endpoint estimates are established for the maximal commutators generated by Calderón-Zygmund operators and OscexpLr(μ) functions for r ≥ 1 under the condition that the underlying measure only satisfies some growth condition, where the kernels of Calderón-Zgymund operators only satisfy the standard size condition and some Hörmander type smooth condition, and OscexpLr(μ) are the spaces of Orlicz type satisfying that OscexpLr(μ)= RBMO(μ) if r=1 and OscexpLr(μ) ?RBMO(μ) if r > 1. Moreover, the same weak type endpoint estimates for the maximal operators associated with the Hardy-Littlewood maximal function and OscexpLr(μ) functions with for r≥ 1are also presented.
	TO cite this article:Guoen Hu,Yan Meng,Dachun Yang. Endpoint Estimates for Maximal Commutators in non-homogeneous spaces[OL].[17 December 2004] http://en.paper.edu.cn/en_releasepaper/content/1365


	7. Directive Electromagnetic Scattering by an Infinite Conducting Cylinder Coated with Left-handed Material
	Sun Jun,Jiang Tian,Sun Wei,Yijun Feng
	Mathematics 15 December 2004
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:In this paper, electromagnetic scattering by an infinite conducting cylinder coated with left-handed material (LHM) for an incident wave of a line source is derived rigorously by using a boundary value mode-matching approach. The numerical calculations demonstrate the improved directivity of the electromagnetic scattering by such a cylindrical structure, due to the negative refraction phenomenon of the LHM. The far-field radiation pattern and its frequency dependence exhibit the possible application of the LHM in directive antenna technique.
	TO cite this article:Sun Jun,Jiang Tian,Sun Wei, et al. Directive Electromagnetic Scattering by an Infinite Conducting Cylinder Coated with Left-handed Material[OL].[15 December 2004] http://en.paper.edu.cn/en_releasepaper/content/1357


	8. On J-flat modules
	Xiaoxiang Zhang,Fei Ye
	Mathematics 25 November 2004
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let R be an associative ring with identity and J(R) the Jacobson radical of R. A left R-module M is called J-flat in case the canonical map µ from the tensor product of J(R) and M to M is a monomorphism. We give some characterizations for J-flat modules. As an application, we prove that R is semiprimitive if and only if every left R-module is J-flat.
	TO cite this article:Xiaoxiang Zhang,Fei Ye. On J-flat modules[OL].[25 November 2004] http://en.paper.edu.cn/en_releasepaper/content/1297


	9. Study of Hybrid Combustion System Based on Gasoline Direct Injection
	Wang Zhi,Wang Jianxin,Shuai Shijin
	Mathematics 24 November 2004
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract: gasoline direct injection combustion system based on two-stage injection strategy was developed by authors and presented in this paper. The combustion system can realize three combustion modes as follows: Homogeneous Charge Spark Ignition (HCSI) mode to achieve high power output density; Stratified Charge Spark Ignition (SCSI) to get optimum fuel economy; Homogeneous Charge Compression Ignition (HCCI) to obtain ultra-low emissions. The engine could be operated in HCCI combustion mode in a range of load from 1 to 5 bar IMEP and operated in SI combustion mode up to load of 8 bar IMEP. The spark ignition and electronically controlled two-stage gasoline injection system are adopted to control the mixture formation, ignition timing and combustion rate. In HCCI mode, the stratified mixture formed by two-stage injection plays a significant role in controlling HCCI and its combustion, which also proves that spark ignition can be utilized as an assistant control approach. Two control approac
	TO cite this article:Wang Zhi,Wang Jianxin,Shuai Shijin . Study of Hybrid Combustion System Based on Gasoline Direct Injection[OL].[24 November 2004] http://en.paper.edu.cn/en_releasepaper/content/1291


	10. Synthesis of (R)-2-trimethylsilyl-2-hydroxyl-ethylcyanide catalyzed with (R)-oxynitrilase from loquat seed meal
	Huang Shunrong ,Liu Senlin ,Zong Minhua ,Xu Ruo
	Mathematics 22 November 2004
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The synthesis of optically active (R)-2-trimethylsilyl-2-hydroxyl-ethylcyanide by asymmetric transcyanation of acetyltrimethylsilane with acetone cyanohydrin in a biphasic system was achieved using (R)-oxynitrilase from loquat seed meal. Diisopropyl ether was the most suitable organic phase among the organic solvents examined. The optimal concentration of acetyltrimethylsilane, concentration of crude enzyme, volume ratio of the aqueous to the organic phase, temperature and the buffer pH value were 14 mM, 61.4 U/ml, 13% (v/v), 30 ℃ and 4.0, respectively. The substrate conversion and the product enantiomeric excess were 95% and 98% under the optimized conditions. Acetyltrimethylsilane was a better substrate of the enzyme than its carbon counterpart.
	TO cite this article:Huang Shunrong ,Liu Senlin ,Zong Minhua , et al. Synthesis of (R)-2-trimethylsilyl-2-hydroxyl-ethylcyanide catalyzed with (R)-oxynitrilase from loquat seed meal[OL].[22 November 2004] http://en.paper.edu.cn/en_releasepaper/content/1269

	Check out RSS, or use RSS reader to subscribe this item