subsets of positive reach

Ngày tải lên: 18/12/2013, 21:45

... effect of positive feedback is positive, but the effect of negative feedback is nega- tive, as can be seen by the sign of the β value. 4 A tutoring system for linked lists A new ITS in the domain of ... following defi- nition of student activity has been adopted: student activity = # of turns − # of short turns session length Turns are the sequences of uninterrupted speech of the student. Short ... might be the educational value of positive feedback in ITSs? First of all, positive feedback may be an effective motivational technique (Lepper et al., 1997). Positive feedback can also have...

Ngày tải lên: 31/03/2014, 00:20

... Series: The Power of Positive Thinking 4 The Power of Positive Thinking You have probably had someone tell you to think positive when you were in a trying situation. That is because the power of positive ... not positive. That is why part of positive thinking involves positive body language. Positive Thinking's Biggest Threat You may believe, after reading this far, that negative thoughts are positive ... and you can change your life through the power of positive thinking. Self Improvement Buff Series: The Power of Positive Thinking 1 The Power of Positive Thinking Brought to You By FREE-EBOOKS-CANADA You...

Ngày tải lên: 07/04/2014, 01:14

... are in harmony with it. There is a rhythm of the stove, a rhythm of the typewriter, a rhythm of the office, a rhythm of an automobile, a rhythm of your job. So to avoid tiredness and to have ... expectancy of several active years before he reached the age of retirement. The businessman above referred to asked the professor to come to his office and announced to him that the board of trustees ... assembling of parts according to the law of God. When you love a machine and get to know it, you will be aware that it has a rhythm. It is one with the rhythm of the body, of the nerves, of the...

Ngày tải lên: 09/04/2014, 17:15

... things which took place in the lives of thousands of people when they applied the principles of dynamic change. Since publication of The Power of Positive Thinking, a book which teaches ... another job. This is exactly the kind of situation where positive think- ing can do its best. One day, Bill dug out an old copy of The Power of Positive Thinking, and read it through. ... people to men of positive strength. Although the life-changing power of positive thinking is available to all, some people experience difficulty in making it work. This is because of some strange ...

Ngày tải lên: 29/04/2014, 15:24

... the existence of organized religions and their churches cannot be taken as proof of the exis- tence of God, the existence of the mental health professions and their clinics is not proof of the existence of ... Aging and Professor of Psychology, Department of Psychology, University of Wisconsin, Madi- son PETER SALOVEY , Professor of Psychology and of Epidemiology and Public Health, De- partment of Psychology, ... De- partment of Psychology, State University of New York at Buffalo JAMES W . PENNEBAKER , Professor, Depart- ment of Psychology, University of Texas CHRISTOPHER PETERSON , Professor of Psy- chology...

Ngày tải lên: 11/06/2014, 10:23

... with the T-method utilizing the standard cut- off of 20% positive cells, as well as with the T/B Ratio- method; in the latter case, the cut-off of 3.0 identified in the test set was chosen. According ... cases marked as ZAP-70 positive, can theoreti- cally represent the result of a high expression level of ZAP-70 in the CLL component, but also of a low expres- sion level of ZAP-70 by residual ... reports by our groups [19,20] Flow cytometric analyses of CD38 and CD49d were done as previously described [18], using the cut-off point of 30% of positive cells for both markers [18,21-23]. Patients...

Ngày tải lên: 18/06/2014, 16:20

... structure of the set o f positive solutions of (1.1), (1.2), and obtain the existence of positive solutions of (1.1) and (1.2). More- over, we can also obtain the existence of negative solutions of ... isacharacteristicvalueofT if there exists v Î E, v ≠ 0, such that v = μTv,i.e.,μ -1 is a nonz ero eigenvalue of T. Let r(T) denote the set of real characte ristic values of T and Γ denote the closure of the set of ... definition of a positive solution and a negative solution of (1.1) and (1.2). Definition 1.1. A positive solution of problem (1.1) and (1.2) refers to a pair (r, u), where r ≠ 0, u is a solution of (1.1)...

Ngày tải lên: 20/06/2014, 20:20

... value problems of ordinary differential equations (BVPs for short) arise in a variety of different areas of applied mathematics and physics. For example, the vibrations of a guy wire of a uniform ... Lian 1 and Weigao Ge 2 1 School of Mathematics and Physics, China University of Geosciences, Beijing 100083, P.R. China 2 Department of Mathematics, Beijing Institute of Technology, Beijing 100081, ... and composed of N parts of different densities can be set up as a multi-point boundary value problem [3]. Many problems in the theory of elastic stability can be handled by the method of multi-point...

Ngày tải lên: 20/06/2014, 20:20

... Classification of solutions for an integral equation. Comm. Pure Appl. Math. 59, 330–343 (2006) Nonexistence of positive solutions of an integral system with weights Zhengce Zhang School of Mathematics ... Mitidieri, E: Positive solutions of semilinear elliptic systems. Comm. Partial Diff. Equ. 17, 923–940 (1992) [5] Peletier, LA, Van der Vorst, RCAM: Existence and nonexistence of positive solutions of non- linear ... some assumptions of p, q, α, and β. Furthermore, using Doubling Lemma indicated in [14], which is an extension of an idea of Hu [15], Chen and Li [16, Theorem 4.3] obtained the nonexistence of positive...

Ngày tải lên: 20/06/2014, 21:20

... symmetry of solutions of (1.1) on the hyperbola (1.3). For ξ = η = 0 and max{1, 2/(N − 2)} < p, q < ∞, Chen and Li [16, Theorem 4.3] obtained the nonexistence of positive solutions of (1.1) ... Mitidieri, E: Positive solutions of semilinear elliptic systems. Comm. Partial Diff. Equ. 17, 923–940 (1992) [5] Peletier, LA, Van der Vorst, RCAM: Existence and nonexistence of positive solutions of non- linear ... some assumptions of p, q, α, and β. Furthermore, using Doubling Lemma indicated in [14], which is an extension of an idea of Hu [15], Chen and Li [16, Theorem 4.3] obtained the nonexistence of positive...

Ngày tải lên: 20/06/2014, 21:20

... uniqueness of nonnegative solutions of quasilinear equations in R n . Adv Math. 118, 177–243 (1996). doi:10.1006/aima.1996.0021 11. Ma, R, An, Y: Uniqueness of positive solutions of a class of O.D.E. ... Kwong, MK: Uniqueness of positive solutions of Δu-u + u p =0inR n . Arch Ration Mech Anal. 105, 243–266 (1989) 3. Erbe, L, Tang, M: Uniqueness of positive radial solutions of Δ u+K(|x|)γ(u) = 0. ... appropriate value r, the same proof can be reapplied as often as necessary to give uniqueness of any con- tinuation of the solution whose values lie in (a, b ). The proof is complete. 3 Uniqueness Theorem...

Ngày tải lên: 20/06/2014, 22:20

... 2011:25 http://www.boundaryvalueproblems.com/content/2011/1/25 Page 2 of 9 In the sequel, we present a sufficient condition for the existence and uniqueness of posit ive solutions for Problem (2) (positive solution means x(t)>0fort Î (0,1)).The proof of this ... (0,1)).The proof of this condi tion is similar to the proof of Theorem 2.3 of [23]. We present this proof for completeness. Theorem 4. Under assumptions of Theorem 3 and suppose that f( t 0 ,0)≠ 0 for ... 2011:25 http://www.boundaryvalueproblems.com/content/2011/1/25 Page 8 of 9 RESEA R C H Open Access On existence and uniqueness of positive solutions to a class of fractional boundary value problems J Caballero * ,...

Ngày tải lên: 20/06/2014, 22:20

... People’s Republic of China Abstract By obtaining intervals of the parameter l, this article investigates the existence of a positive solution for a class of nonlinear boundary value problems of second-order differential ... case of main results of this study, let us make use of the following lemmas. Lemma 2.1 Assume that (H) holds, then x is a nonnegative solution of (1.1) i f and only if x is a fixed point of the ... Banach space with norm || · || and P ⊂E be a cone of E. The purpose of this article is to i nvestigate the existence of po sitive solutions of the fo llowing sec- ond-order integral boundary...

Ngày tải lên: 21/06/2014, 00:20

... 2011:25 http://www.boundaryvalueproblems.com/content/2011/1/25 Page 2 of 9 In the sequel, we present a sufficient condition for the existence and uniqueness of posit ive solutions for Problem (2) (positive solution means x(t)>0fort Î (0,1)).The proof of this ... (0,1)).The proof of this condi tion is similar to the proof of Theorem 2.3 of [23]. We present this proof for completeness. Theorem 4. Under assumptions of Theorem 3 and suppose that f( t 0 ,0)≠ 0 for ... 2011:25 http://www.boundaryvalueproblems.com/content/2011/1/25 Page 8 of 9 andtheyprovedtheexistenceofpositivesolutionsbymeansoftheKrasnosel’skii fixed-point theorem and Legget-Williams fixed-point...

Ngày tải lên: 21/06/2014, 00:20

... changes sign. The existence result of positive solutions is established by using the fixed point index theory of cone mapping. Keywords: periodic boundary value problem, positive solution, sign-changing Green’s ... Multiplicity of positive periodic solutions to supperlinear repulsive singular equations. J Differ Equ. 210, 282–320 (2005) 4. Torres, PJ: Existence of one-signed periodic solutions of some second-order ... Access Existence of positive solutions to periodic boundary value problems with sign-changing Green’s function Shengren Zhong 1 and Yukun An 2* * Correspondence: anykna@nuaa. edu.cn 2 Department of Mathematics, Nanjing...

Ngày tải lên: 21/06/2014, 01:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 05:20