application of differential equations in electrical engineering

... nicepresentation of methods as well as results in the area In recent years, there has been an increasing interest in extending certain classical results to differential equations in Banach spaces In this ... abstract functional differential equations with infinitedelay, there are three kinds of definitions of stabilities In Sections 3 and 4, we provesome equivalence of these definitions of stabilities ... the case of almost periodic solutions of (linear and nonlinear)equations in Banach spaces To this end, in the first chapter we present introduc-tions to the theory of semigroups of linear operators

Ngày tải lên: 29/10/2015, 12:32

... position of 54,5m on line DMAT1 using Polyfit interpolation Results using Trendline determines inflection point at the depth of 5,38m with resistivity value of 563Ωm Results using Polyfit interpolation ... of 54,5m on line DMAT2 using Trendline [2] Fig 6 The resistivity curve at the position of 54,5m on line DMAT2 using Polyfit interpolation Results using Trendline determines inflection point ... position 54,5m of on line DMAT3 using Polyfit interpolation. Results using Trendline determines inflection point at the depth of 8,54m with resistivity value of 495Ωm Results using Polyfit interpolation

Ngày tải lên: 14/12/2017, 20:33

... variation-of-constants formula in the theory of linear ordinary differential equations So, we often call the representation formula obtained here the variation-of-constants formula in the phase space Such ... is finite dimensional, the representation formula for functional differential equations has been established by Hale [5] in the case of finite delay and by Murakami [16] in the case of infinite ... November 22, 2000 For linear functional differential equations with infinite delay in a Banach space, a variation-of-constants formula is established in the phase space As an application one applies

Ngày tải lên: 17/12/2017, 16:49

... Moving Bed Biofilm Reactor (MBBR) solves the remaining problems in the reactors using fixed biofilms such as reducing the volume of structure, reducing energy costs, and significantly increasing ... a strategy of many countries including Vietnam Currently, the living standard in our country is being improved gradually, awareness of health protection is increasing, especially in big cities ... An overview of biofilm and the works using this technology, evaluating the advantages and disadvantages of each type of biofilm, each type of work for which to propose moving bed biofilm carriers

Ngày tải lên: 09/01/2020, 15:21

... Moving Bed Biofilm Reactor (MBBR) solves the remaining problems in the reactors using fixed biofilms such as reducing the volume of structure, reducing energy costs, and significantly increasing ... a strategy of many countries including Vietnam Currently, the living standard in our country is being improved gradually, awareness of health protection is increasing, especially in big cities ... An overview of biofilm and the works using this technology, evaluating the advantages and disadvantages of each type of biofilm, each type of work for which to propose moving bed biofilm carriers

Ngày tải lên: 15/01/2020, 10:42

... problem of high common voltage in the neutral An indirect sensing of zero crossing of phase back EMF by detecting conducting state of free-wheeling diodes in the unexcited phase was presented in [11] ... time, leaving the third winding floating The back EMF voltage in the floating winding can be measured to establish a switching sequence for commutation of power devices in the three-phase inverter ... the Faculty of the Virginia Polytechnic Institute and the State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Electrical Engineering Approved

Ngày tải lên: 06/08/2022, 16:52

... JOURNEY: WHY WRITE A CHILDREN’S BOOKWOMEN, A MINORITY IN ENGINEERING As a woman in engineering, I have seen firsthand the lack of women in the engineeringsciences at the university level But what ... A: P RINCESS C ATIE G OES TO C OLLEGE 20 Trang 7WRITING EDUCATIONAL PICTURE BOOKS TO INSPIRE YOUNG WOMENPROBLEM DEFINITION Women are a minority in engineering As a woman in the engineering program ... but the combination of writing andillustrating infuses the story with life Upon viewing the illustrations in Princess CatiesGoes to College, my meaning will become quite clear A copy of my book

Ngày tải lên: 19/10/2022, 00:57

... bachelor’s degree in electrical engineering by offering the entire electrical engineering curriculum, including electronic laboratory courses, online and asynchronously - thus realizing Sloan Foundation’s ... been involved in the Online Bachelor of Science in Electrical Engineering Program since its inception. He developed the electronics laboratory I and II to offer hands-on experiences to online ... Associate Professor at the Department of Electrical and Computer Engineering in Stony Brook University She received her B.S., M.S and Ph D in Electrical Engineering from the University of Rochester

Ngày tải lên: 30/10/2022, 18:10

... 2COMPLEX QUANTITIES AND THEIR USE IN ELECTRICAL ENGINEERING BY CHA8 PROTEUS 8TEINMKTZ I.—INTRODUCTION In the following, I shall outline a method of calculating alter-nate current phenomena, ... matter of elementary algebra—while problems like the discussion of circuits containing distributed capacity, which before involved the integration of differential equations containing two independent ... herefrom, that: 11 In polar coordinates, the sine-wave is represented in in-tensity and phase by a vector o c, and in combining or dis-solving sine-wa/aes, they are to be combined or dissolved

Ngày tải lên: 04/06/2014, 12:33

... ging heat transfer of nanofluids. Among the phase-chan- ging heat transfer, the application of nanofluids in heat pipes gains increasing popularity [8-25]. The involved heat pipes include the grooved ... evaporating HTC of functiona- lized nanofluid increases maximally by 17% at the oper- ating temperature of 40°C. In addition, the MHF of functionalized nanofluid is quite close to that of water, ... enhancement using Al2O3/water nanofluid in a two-phase... behaviour using nanofluid, in: Proceedings of heat powered cycles international conference (HPC) Heat Powered Cycles International

Ngày tải lên: 21/06/2014, 01:20

... solutions on different kinds of deterministic differential equations have been considerably investigated in lots of publications [5-15] because of its signifi-cance and applications in physics, mechanics, ... Our main result is established by using fractional powers of linear operators and Banach contraction principle The obtained result can be seen as a contribution to this emer-ging field since it ... studied in [23] We first use a sharper definition (Definition 2.1) of square-mean almost auto-morphic process than the Definition 2.5 in [23] We then present some additional properties of square-mean

Ngày tải lên: 21/06/2014, 03:20

... examples are given to illustrate our results 1 Introduction Owing to the memory behavior cf., e.g., 1, 2 of materials, many practical problems in engineering related to viscoelasticity or thermoviscoelasticity ... the following Volterra equation: ut  Aut  t 0 at − sAusds, t ≥ 0, u0  x 1.1 in a Banach space X, with A being the infinitesimal generator of a C0-semigroup Tt defined on X, ... ∩ iR is countable. Proof Since the first coordinate of2.5 is the unique solution of 1.1, it is easy to see that the strong stability and asymptotic almost periodicity of1.1 follows from

Ngày tải lên: 21/06/2014, 05:20

... denominators in both equations are equal This allows us to use some of the techniques developed in8 to completely obtain the solutions and give a nice description of the dynamics of the system In ... be to give a description of the dynamics of the system in terms of the eigenvalues of the associated matrixA given in 2.2 We begin with the following result concerning 2-periodic solutions ... the equilibrium point β2 1− α2/β2, β1 attracts every complete solution not starting on a point of the line x  0, c the solutions starting on a point x0, y0 of the line x  0 are prime

Ngày tải lên: 21/06/2014, 05:20

... Andrzej Szulkin We discuss on the generalized Ulam-Hyers stability for functional equations in a single variable, including the nonlinear functional equations, the linear functional equations, ... existence of a mapping c : G → Y such that the following hold. i c is a fixed point of J, that is, The mapping c is the unique fixed point of J in the set This says that c is the unique mapping verifying ... and we obtain the exis-tence of a mapping c : G → Y such that the following hold. i c is a fixed point of J, that is, c x  Fx, c The mapping c is the unique fixed point of J in the set

Ngày tải lên: 22/06/2014, 06:20

... uK0, then inequality (2.3) implies The following definition, which is a modified version of one introduced in [3], vides a kind of the strict inequality inX. pro-Definition 2.5 Let H be a linear ... the interior of the abovementioned cone in L ∞[0, 1] is empty The proofs of the results of this paper rely upon properties of a certain nonlinear tional associated with the wedgeK and a certain ... (2.29) is nonlinear 3 Mutual comparability of solutions of ( 1.1 ) The aim of this section is to establish certain conditions under which each two solutions of (1.1) lying in a certain linear manifold

Ngày tải lên: 22/06/2014, 18:20

... solvability of (1.2) inl∞spaces of sequences defined onN In the present paper, we will characterize the exponential dichotomy of (1.1) by the solvability of (1.2) in l p spaces (1≤ p < ∞) of sequences ... n belonging to a relevant sequence space (1.3) In the infinite-dimensional case, in order to characterize the exponential dichotomy of (1.1) defined onN, beside the surjectiveness of the operatorT, ... spaceX, we investigate the characterization of exponential dichotomy of the difference equations vn+1 = A n v n We characterize the exponential dichotomy of difference equations in terms of the exis-tence

Ngày tải lên: 22/06/2014, 22:20

... differential equations and the initial or boundary conditions may con-tain discontinuous nonlinearities; (5) problems on unbounded intervals; (6) finite and infinite systems of initial and boundary value ... that all well-ordered and inversely well-ordered chains of U have supremums and infimums in P. Proof (a) In both cases (A) and (B), the mapping x → x+is continuous inE and  x+ ≤  x for eachx ... definition (2.1) ofP. IfW is an inversely well-ordered chain in U, then − W is a well-ordered chain in − U. The above proof ensures thatv =sup(−W) exists in C(J, E) and belongs to P Thus, infW

Ngày tải lên: 23/06/2014, 00:20

... as 6 becomes very small. It tends to diminish with increasing real values of 6. That is, the arms of an equivalent T are always smaller than those of the corresponding nominal T of a continuous-current line, and tend to become smaller ... the equivalent T degrades into the nominal T for = ; but as the line angle increases, the equivalent T diverges from the nominal T, the equivalent T arms diminishing relatively in resistance, and the equivalent T leak increasing relatively in conductance, in the case of a continuous-current system. Equivalent II. As indicated in Fig. 15, the following values must be assigned to ... author desires to acknowledge his indebtedness to the writings of Heaviside, Kelvin, J. A. Fleming, C. P. Steinmetz, and many others, A necessarily imperfect bibliography of the subject, in order of date, is offered in an Appendix. He is also indebted to...

Ngày tải lên: 04/06/2014, 12:30

... solu- tions of a delay differential equation, while in the second example, we will obtain the bound of the solutions of an integral equation. For the sake of proving the global existence of solutions of ... Zheng and Feng: Some new nonlinear integral inequalities and their applications in the qualitative analysis of differential equations. Journal of Inequalities and Applications 2011 2011:20. Submit ... 2011:20 http://www.journalofinequalitiesandapplications.com/content/2011/1/20 Page 14 of 15 RESEARC H Open Access Some new nonlinear integral inequalities and their applications in the qualitative analysis of differential...

Ngày tải lên: 21/06/2014, 01:20

... organizational learning: Representing and maintaining knowledge in an experience base”, in Proc. Tenth Int. Conf. on Software Engineering and Knowledge Engineering, SEKE’98, 1998. 44. T. Dingsøyr, “A ... management in software engineering projects”, in Proc. Int. Conf. on Software Engineering and Knowledge Engineering, SEKE99, 1999, pp. 2027. 65. P. Brăossler, Knowledge management at a software ... methods according to the subject of study; in software engineering it can be either a process to produce software or a software product. In an article on research methods in software engineering [30]...

Ngày tải lên: 16/01/2014, 16:33