期刊文献+
共找到2,982篇文章
< 1 2 150 >
每页显示 20 50 100
Comprehensive Evaluation on Drought Tolerance of Widely-used Rice Varieties with Subordinate Function Method 被引量:1
1
作者 刘三雄 黎用朝 +5 位作者 吴俊 闵军 常硕其 刘利成 卢向阳 邓启云 《Agricultural Science & Technology》 CAS 2015年第8期1643-1647,共5页
Using drought-tolerant cultivar IAPAR 9 (upland rice from Brazil) and drought-sensitive varieties IR64 as the controls, the drought tolerances of total 26 rice varieties widely used in production were evaluated with... Using drought-tolerant cultivar IAPAR 9 (upland rice from Brazil) and drought-sensitive varieties IR64 as the controls, the drought tolerances of total 26 rice varieties widely used in production were evaluated with subordinate function method based on morphological, physiological and yield traits. The results showed that the trait values of grain yield per plant (GYP), effective panicles per plant (EPP), seed-setting rate (SSR), panicle length (PL), leaf relative water content (RWC) and chlorophyll content (SPAD) in all tested varieties decreased significantly under the conditions of drought stress. The subordinate function values of these traits of all tested rice varieties were thus calculated varieties. Based on the aver- age subordinate function values of all these traits, total 7 (i.e. Y Liangyou 1) and 3 (i.e. Liangyou Peijiu) rice varieties were identified as drought-tolerant and drought- sensitive varieties, respectively. 展开更多
关键词 RICE Drought tolerance subordinate function
下载PDF
关于Subordinator的指数与维数
2
作者 冯敬海 《高校应用数学学报(A辑)》 CSCD 北大核心 1998年第4期427-432,共6页
设X(t)是Rd(d为正整数)中的Levy过程,本文首先对前人所定义的X(t)的各种指数给出了另外一种刻划,事实上它们可以用极限的形式表达.这种刻划使得这些指数的几何意义非常明确.且适合于构造各种各样的例子.若X(t... 设X(t)是Rd(d为正整数)中的Levy过程,本文首先对前人所定义的X(t)的各种指数给出了另外一种刻划,事实上它们可以用极限的形式表达.这种刻划使得这些指数的几何意义非常明确.且适合于构造各种各样的例子.若X(t)是一个Subordinator,本文证明了X(t)的象集的填充维数就是X(t)的上指数β,并且举例说明存在Subordinator,它的象集的Hausdorf维数为0而填充维数为1. 展开更多
关键词 HAUSDORFF维数 填充维数 LEVY过程 subordinATOR
下载PDF
ON CERTAIN CLASS OF ANALYTIC FUNCTIONS DEFINED BY DIFFERENTIAL SUBORDINATION 被引量:6
3
作者 刘名生 《Acta Mathematica Scientia》 SCIE CSCD 2002年第3期388-392,共5页
In this paper, the new subclass B-n(lambda,alpha,A,B) of analytic functions is introduced. Its subordination relations, inclusion relations, the inequality properties and convering theorem are discussed. The results o... In this paper, the new subclass B-n(lambda,alpha,A,B) of analytic functions is introduced. Its subordination relations, inclusion relations, the inequality properties and convering theorem are discussed. The results obtained in this paper are sharp, which generalize the related works of some authors and some other new results are obtained. 展开更多
关键词 Bazilevic function subordinATION BOUND
下载PDF
Coefficient Estimates for a Class of m-fold Symmetric Bi-univalent Function Defined by Subordination 被引量:1
4
作者 Guo Dong Tang Huo +2 位作者 Ao En Xiong Liang-peng Ji You-qing 《Communications in Mathematical Research》 CSCD 2019年第1期57-64,共8页
In this paper, we investigate the coefficient estimates of a class of m-fold bi-univalent function de?ned by subordination. The results presented in this paper improve or generalize the recent works of other authors.
关键词 analytic FUNCTION UNIVALENT FUNCTION COEFFICIENT estimate m-fold SYMMETRIC bi-univalent FUNCTION subordinATION
下载PDF
THIRD-ORDER DIFFERENTIAL SUBORDINATION RESULTS FOR ANALYTIC FUNCTIONS INVOLVING THE GENERALIZED BESSEL FUNCTIONS 被引量:4
5
作者 汤获 Erhan DENIZ 《Acta Mathematica Scientia》 SCIE CSCD 2014年第6期1707-1719,共13页
In the present paper, we derive some third-order differential subordination results for analytic functions in the open unit disk, using the operator Bcκf by means of normalized form of the generalized Bessel function... In the present paper, we derive some third-order differential subordination results for analytic functions in the open unit disk, using the operator Bcκf by means of normalized form of the generalized Bessel functions of the first kind, which is defined as z(Bκ+1^c f(z))′= κBκ^c f(z)-(κ- 1)Bκ+1^c f(z),where b, c, p ∈ C and κ = p +(b + 1)/2 ∈ C / Z0^-(Z0^-= {0,-1,-2, … }). The results are obtained by considering suitable classes of admissible functions. Various known or new special cases of our main results are also pointed out. 展开更多
关键词 differential subordination univalent functions Hadamard product admissible functions generalized Bessel functions
下载PDF
HITTING PROBABILITIES OF WEIGHTED POISSON PROCESSES WITH DIFFERENT INTENSITIES AND THEIR SUBORDINATIONS 被引量:1
6
作者 Heng ZUO Zhaohui SHEN Guanglin RANG 《Acta Mathematica Scientia》 SCIE CSCD 2021年第1期67-84,共18页
In this article,we study the hitting probabilities of weighted Poisson processes and their subordinated versions with different intensities.Furthermore,we simulate and analyze the asymptotic properties of the hitting ... In this article,we study the hitting probabilities of weighted Poisson processes and their subordinated versions with different intensities.Furthermore,we simulate and analyze the asymptotic properties of the hitting probabilities in different weights and give an example in the case of subordination. 展开更多
关键词 weighted Poisson processes hitting probabilities subordinATION
下载PDF
TRANSFORMS, DIFFERENTIAL SUBORDINATIONS AND A_p-WEIGHTED INEQUALITIES FOR BANACH-SPACE-VALUED REGULAR MARTINGALES 被引量:1
7
作者 刘培德 侯友良 《Acta Mathematica Scientia》 SCIE CSCD 1993年第2期180-187,共8页
In this paper we proved the A(p)-weighted inequalities for martingale transforms and differential subordinations of Banach-space-valued regular maringales. We discussed the relations between the weighted inequalities,... In this paper we proved the A(p)-weighted inequalities for martingale transforms and differential subordinations of Banach-space-valued regular maringales. We discussed the relations between the weighted inequalities, A(p)-weight functions and the Banach spaces which has the UMD property or are isomorphic to Hilbert space. 展开更多
关键词 DIFFERENTIAL subordinATIONS AND A_p-WEIGHTED INEQUALITIES FOR BANACH-SPACE-VALUED REGULAR MARTINGALES TRANSFORMS
下载PDF
CERTAIN FAMILY OF INTEGRAL OPERATORS PRESERVING SUBORDINATION AND SUPERORDINATION
8
作者 Mohamed K.AOUF Teodor BULBOACA Tamer M.SEOUDY 《Acta Mathematica Scientia》 SCIE CSCD 2014年第4期1166-1178,共13页
We obtain subordination, superordination and sandwich-preserving new theorems for certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorem for t... We obtain subordination, superordination and sandwich-preserving new theorems for certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorem for these integral operators is also derived, and the results generalize some recently ones. 展开更多
关键词 analytic function convex function differential subordination and supcrordination: subordination chain integral operator
下载PDF
SUBORDINATION PROPERTIES OF MULTIVALENT FUNCTIONS INVOLVING AN EXTENDED FRACTIONAL DIFFERINTEGRAL OPERATOR
9
作者 Mohamed K.AOUF Teodor BULBOACA Rabha M.EL-ASHWASH 《Acta Mathematica Scientia》 SCIE CSCD 2014年第2期367-379,共13页
The object of this article is to investigate inclusion, radius, and other various properties of subclasses of multivalent analytic functions, which are defined by using an extended version of the Owa-Srivastava fracti... The object of this article is to investigate inclusion, radius, and other various properties of subclasses of multivalent analytic functions, which are defined by using an extended version of the Owa-Srivastava fractional differintegral operator Ω(λ,p). 展开更多
关键词 Analytic functions p-valent functions meromorphic functions differintegraloperator differential subordination
下载PDF
Principal-subordinate hierarchical multi-objective programming model of initial water rights allocation 被引量:5
10
作者 Dan WU Feng-ping WU Yan-ping CHEN 《Water Science and Engineering》 EI CAS 2009年第2期105-116,共12页
The principal-subordinate hierarchical multi-objective programming model of initial water rights allocation was developed based on the principle of coordinated and sustainable development of different regions and wate... The principal-subordinate hierarchical multi-objective programming model of initial water rights allocation was developed based on the principle of coordinated and sustainable development of different regions and water sectors within a basin. With the precondition of strictly controlling maximum emissions rights, initial water rights were allocated between the first and the second levels of the hierarchy in order to promote fair and coordinated development across different regions of the basin and coordinated and efficient water use across different water sectors, realize the maximum comprehensive benefits to the basin, promote the unity of quantity and quality of initial water rights allocation, and eliminate water conflict across different regions and water sectors. According to interactive decision-making theory, a principal-subordinate hierarchical interactive iterative algorithm based on the satisfaction degree was developed and used to solve the initial water rights allocation model. A case study verified the validity of the model. 展开更多
关键词 initial water rights allocation principal-subordinate hierarchy multi-objective programming model satisfaction degree
下载PDF
DIFFERENTIAL SUBORDINATIONS AND α-CONVEX FUNCTIONS
11
作者 Jacek DZIOK Ravinder Krishna RAINA Janusz SOKóL 《Acta Mathematica Scientia》 SCIE CSCD 2013年第3期609-620,共12页
This article presents some new results on the class SLMα of functions that are analytic in the open unit disc U = {z : |z|〈 1} satisfying the conditions that f(0) =0, f'(0)= 1, and α(1+zf''(z)/f'(... This article presents some new results on the class SLMα of functions that are analytic in the open unit disc U = {z : |z|〈 1} satisfying the conditions that f(0) =0, f'(0)= 1, and α(1+zf''(z)/f'(z)+(1-α)zf'(z)/f(z)∈p(U)for all z ∈ U, where αis a real number and p(z)=1+r^2z^2/1-Tz-T^2z^2(z∈ U). The number T = (1 -√5)/2 is such that T^2 = 1 + T. The class SFLMa introduced by J. Dziok, R.K. Raina, and J. Sokot [3, Appl. Math. Comput. 218 (2011), 996-1002] is closely related to the classes of starlike and convex functions. The article deals with several ideas and techniques used in geometric function theory and differential subordinations theory. 展开更多
关键词 Univalent functions starlike functions subordinATION Fibonacci numbers trisectrix of Maclaurin conchoid of de Sluze
下载PDF
On the Increments of Stable Subordinators
12
作者 Abdelkader Bahram Bader Almohaimeed 《Applied Mathematics》 2017年第5期663-670,共8页
Let be a stable subordinator defined on a probability space and let at for t>0?be a non-negative valued function. In this paper, it is shown that under varying conditions on at, there exists a function such that wh... Let be a stable subordinator defined on a probability space and let at for t>0?be a non-negative valued function. In this paper, it is shown that under varying conditions on at, there exists a function such that where , , and . 展开更多
关键词 INCREMENTS STABLE subordinators ITERATED LOGARITHM LAWS
下载PDF
Subordination Results for p-Valent Meromorphic Functions Associated with a Linear Operator
13
作者 A.O.Mostafa M.K.Aouf 《Analysis in Theory and Applications》 2014年第4期369-376,共8页
In this paper, by making use of the Hadamard products, we obtain some subordination results for certain family of meromorphic functions defined by using a new linear operator.
关键词 Meromorphic functions subordinATION Hadamard product linear operator.
下载PDF
The Fractal Structures of the Sample Path of a General Subordinator and the Random Re-orderings of the Cantor Set
14
作者 Hu Xiaoyu Institute of Applied Mathematics, Chinese Academy of Science, Beijing 100080,China Department of Mathematics, Central China Normal University, Wuhan 430070, China 《Wuhan University Journal of Natural Sciences》 CAS 1997年第1期27-31,共5页
In this paper we have found a general subordinator, X, whose range up to time 1, X([0,1)), has similar structure as random re orderings of the Cantor set K(ω).X([0,1)) and K(ω) have the same exact Hausdorff measure... In this paper we have found a general subordinator, X, whose range up to time 1, X([0,1)), has similar structure as random re orderings of the Cantor set K(ω).X([0,1)) and K(ω) have the same exact Hausdorff measure function and the integal test of packing measure. 展开更多
关键词 Hausdorff measure packing measure subordinATOR random re ordering of the Cantor set
下载PDF
Assessment of Stress on Serum Estradiol and Cortisol Levels in Female Subordinate Naked Mole Rats Following Isolation from Natal Colony
15
作者 Amos Onyansi Makori Albert Wafula Nyongesa +1 位作者 Hesbon Odongo Rael Jepkogei Masai 《Journal of Biosciences and Medicines》 2020年第3期9-17,共9页
This study investigated the effects of isolation of subordinate naked mole rats from natal colonies on their reproductive success. Naked mole rat is one of the known mammals that exhibit eusociality. It has been noted... This study investigated the effects of isolation of subordinate naked mole rats from natal colonies on their reproductive success. Naked mole rat is one of the known mammals that exhibit eusociality. It has been noted that naked mole rats have their reproduction restricted to one queen and less than three males;the rest of the animals within the colony remain sterile. The study aimed at establishing whether the reproductive suppression in subordinate naked mole rats is the outcome of social stress exerted by breeding female in the colony or other unknown environmental factors within the colony set-up. Experimental period was 20 weeks and it involved two stages, acclimatization and isolation. Before acclimation, 2 female subordinate naked mole rats were sacrificed. Blood samples were collected and appropriately preserved for later analysis. On the 2nd, 4th and 6th weeks of acclimatization, 2 female mole rats were sacrificed at each stage and blood samples were harvested for analysis. On week 7, eighteen subordinate females were isolated and randomly assigned into two groups of 9 animals each in two separate cages for 14 weeks. One week 8, 2 subordinate females from each group were randomly selected, sacrificed and blood samples collected for analysis. The same procedure was repeated on week 12 and 20 of study. Hormonal analysis was done using ELISA technique. The Statistical analysis done using student t-test at 95% confidence level and significance level was set at P < 0.05. Results showed increase in cortisol levels only in singly isolated females which were the greatest on week 8 (from 35.5 ng/ml to 123.4 ng/ml). Mean estradiol in singly isolated females was 18 ± 2.52 pg/ml while females paired with males had 19.0 ± 3.0 pg/ml hence no significant difference (paired t = -1.73, P = 0.23). Conclusively, the observed reproductive suppression among subordinate naked mole rats in natal colonies is probably due to presence of queen or other reproductive aspects that may not be directly related to stress. 展开更多
关键词 ISOLATION subordinATE Naked MOLE Rat Reproductive Success Stress ESTRADIOL
下载PDF
On a Subordination Result of a Subclass of Analytic Functions
16
作者 Risikat Ayodeji Bello 《Advances in Pure Mathematics》 2017年第11期641-646,共6页
In this paper, we investigate a subordination property and the coefficient inequality for the class M(1, b), The lower bound is also provided for the real part of functions belonging to the class M(1, b).
关键词 Analytic FUNCTION UNIVALENT FUNCTION HADAMARD Product subordinATION
下载PDF
THE SUBORDINATION PRINCIPLE AND ITS APPLICATION TO THE GENERALIZED ROPER-SUFFRIDGE EXTENSION OPERATOR
17
作者 Jianfei WANG Xiaofei ZHANG 《Acta Mathematica Scientia》 SCIE CSCD 2022年第2期611-622,共12页
This note is devoted to applying the principle of subordination in order to explore the Roper-Suffridge extension operator and the Pfaltzgraff-Suffridge extension operator with special analytic properties.First,we pro... This note is devoted to applying the principle of subordination in order to explore the Roper-Suffridge extension operator and the Pfaltzgraff-Suffridge extension operator with special analytic properties.First,we prove that both the Roper-Suffridge extension operator and the Pfaltzgraff-Suffridge extension operator preserve subordination.As applications,we obtain that if β∈[0,1],γ∈[0,1/r]and β+γ≤1,then the Roper-Suffridge extension operator Φ_(β+γ)(f)(z)=(f(z_(1)),(f(z_(1))/z_(1))^(β)(f’(z_(1)))^(γ)w),z∈Ω_(p,r) preserves an almost starlike mapping of complex order λ on Ω_(p,r)={z=(z_(1),w)∈C×X:|z_(1)|^(p)+‖w‖_(X)^(r)<1},where 1≤p≤2,r≥1 and X is a complex Banach space.Second,by applying the principle of subordination,we will prove that the Pfaltzgraff-Suffridge extension operator preserves an almost starlike mapping of complex order λ.Finally,we will obtain the lower bound of distortion theorems associated with the Roper-Suffridge extension operator.This subordination principle seems to be a new idea for dealing with the Loewner chain associated with the Roper-Suffridge extension operator,and enables us to generalize many known results from p=2 to 1≤p≤2. 展开更多
关键词 Biholomorphic mappings starlike mappings subordinATION Loewner chain
下载PDF
A Corpus-based Approach to English Subordinate Clause Identification
18
作者 张晶 Zhao +4 位作者 Tiejun Li Sheng Yao Jianmin 《High Technology Letters》 EI CAS 2001年第1期10-12,共3页
The complex sentence structure of English is a bottleneck to our practical machine translation system. The simplification of English subordinate clauses will greatly relieves the burden of parsing and other grammatica... The complex sentence structure of English is a bottleneck to our practical machine translation system. The simplification of English subordinate clauses will greatly relieves the burden of parsing and other grammatical or semantic analysis of a complex sentence, thus improves the output quality of the MT system. But there have not any satisfactory research achievements reported in this field up to now as we know. In this paper, author’s work on a corpus-based approach to English subordinate clause identification is reported. The approach integrates rule-based and statistical methods to get the left and right boundaries of the subordinate clauses. The Penn Treebank corpus is used as the training standard. The precision and recall ratios of subordinate clause identification are tested on both closed and open corpora. A result of 92.9% precision and 91.26% recall is obtained for the closed test and the open test result is 80.34% precision and 83.93% recall. This algorithm has been integrated into our machine translation system. The method can also be applied to processing of any other language. 展开更多
关键词 subordinate clauses CORPUS Knowledge acquisition
下载PDF
Woman's Subordination in Politics in West Sumatera
19
作者 Zulvia Trinova Rezki Amelia +1 位作者 Gusmirawati Rosdialena 《Journalism and Mass Communication》 2017年第7期412-426,共15页
Indonesia government has placed politically the chance for women to participate in political field because the women representation is still low if it is compared with men locally and nationally. Meanwhile, the involv... Indonesia government has placed politically the chance for women to participate in political field because the women representation is still low if it is compared with men locally and nationally. Meanwhile, the involvement of women in politics becomes one of indicators to determine Gender Empowerment Measurement (GEM). West Sumatra which is well-known as Bundo Kanduang provides important position for women in making decision, either in custom, nagari, communal society. The aim of the study is to describe women participation in politics. It is also to identify some factors which influence the women representation in legislative level. Qualitative research was used in this study where the data taken from interview, documentation, and observation. 24 candidate of legislative in 2014 were involved in this study. The finding of the study showed that there was only 7.38% women got the position in legislative. The women participation is lower than 2009. The other finding described some factors that influenced the women involvement in parliament. It was caused by: (1) there is a stereotype of society that politics is for men only; (2) the process of selection in politic still subordinate women; (3) lack of publication support in parliament; (4) there is no organization, group and networking which not commit to support women in parliament; (5) there is no good support from family to involved in polities. It is suggested that the government should improve the women representation in legislative. 展开更多
关键词 women subordination POLITICS PARLIAMENT
下载PDF
Order of Precedence Between Local Laws of Cities with Subordinate Districts and Regulations of Provincial Governments Clarifying Premises for Discussion Based on the Characteristics of Laws
20
作者 Zheng Tai'an Lin Min Zhang Congrong 《Contemporary Social Sciences》 2018年第2期106-117,共12页
The lack of descriptions regarding the order of precedence between the local laws of cities with subordinate districts and the regulations of provincial governments in Legislation Law of the People's Republic of C... The lack of descriptions regarding the order of precedence between the local laws of cities with subordinate districts and the regulations of provincial governments in Legislation Law of the People's Republic of China(Legislation Law) has led to two divergent views. One holds that "the local laws of cities with subordinate districts should take precedence over the regulations of provincial governments," while the other supports the exact opposite. This is a value judgment issue in legislation. To reach a solution, we need to clarify the premises based on the characteristics of the laws in question so that a basic common ground can be established for discussion. The first premise for traditional legislation is that a law should be based on experience as well as logic; the second is that the experience of authority subjects, plus the three aspects of logic should outweigh the experience of social subjects, plus the three aspects of logic. With respect to postmodern legislation, the first premise is that experience should override logic, and the second is that the experience of the authority subject should take precedence over that of social subject, with no requirements for logical consistency. Since Legislation Law fal s into the category of postmodern legislation, according to the premises, the argument that the local laws of cities with subordinate districts should take precedence enjoys wider acceptance, but the view is logically challenged in terms of conceptual consistency, system consistency and principle consistency. More studies must be conducted to facilitate the discussion. 展开更多
关键词 cities with subordinate districts local laws regulations of provincial governments order of precedence premises postmodern legislation
下载PDF
上一页 1 2 150 下一页 到第
使用帮助 返回顶部