N. I. Popivanov: search on Z-Library

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1

On the solvability of a Neumann boundary value problem for the differential equation

P Palamides, P Kelevedjiev, N Popivanov

Journal:

Boundary Value Problems

Year:

2012

Language:

english

File:

PDF, 172 KB

english, 2012

2

Laparoscopic versus open approach for adhesive small bowel obstruction, a systematic review and meta-analysis of short term outcomes

Krielen, Pepijn, Di Saverio, Salomone, ten Broek, Richard, Renzi, Claudio, Zago, Mauro, Popivanov, Georgi, Ruscelli, Paolo, Marzaioli, Rinaldo, Chiarugi, Massimo, Cirocchi, Roberto

Journal:

Journal of Trauma and Acute Care Surgery

Year:

2020

File:

PDF, 696 KB

2020

3

A historical review of surgery for peritonitis secondary to acute colonic diverticulitis: from Lockhart-Mummery to evidence-based medicine

Cirocchi, Roberto, Afshar, Sorena, Di Saverio, Salomone, Popivanov, Georgi, De Sol, Angelo, Gubbiotti, Francesca, Tugnoli, Gregorio, Sartelli, Massimo, Catena, Fausto, Cavaliere, David, Taboła, Renata

Journal:

World Journal of Emergency Surgery

Year:

2017

Language:

english

File:

PDF, 836 KB

english, 2017

4

Gevrey hypoellipticity and solvability on the multidimensional torus of some classes of linear partial differential operators

Angela A. Albanese, Petar Popivanov

Journal:

Annali dell'Universita di Ferrara

Year:

2006

Language:

english

File:

PDF, 241 KB

english, 2006

5

Nonlinear Dynamics Estimation of EEG Signals Accompanying Self-Paced Goal-Directed Movements

Juliana Dushanova, David Popivanov

Journal:

Nonlinear Dynamics, Psychology, and Life Sciences

Year:

2001

Language:

english

File:

PDF, 139 KB

english, 2001

6

Tracking EEG signal dynamics during mental tasks. A combined linear/nonlinear approach

Popivanov, D., Mineva, A., Duhanova, J.

Journal:

IEEE Engineering in Medicine and Biology Magazine

Year:

1998

Language:

english

File:

PDF, 1.23 MB

english, 1998

7

A general framework for some economic problems with uncertainty and exogenous barriers

Agliardi, R., Popivanov, P., Slavova, A.

Journal:

Economic Modelling

Year:

2012

Language:

english

File:

PDF, 206 KB

english, 2012

8

Second-order initial value problems with singularities

Kelevedjiev, Petio, Popivanov, Nedyu

Journal:

Boundary Value Problems

Year:

2014

Language:

english

File:

PDF, 1.24 MB

english, 2014

9

Open abdomen and VAC(R) in severe diffuse peritonitis

Mutafchiyski, V. M., Popivanov, G. I., Kjossev, K. T., Chipeva, S.

Journal:

Journal of the Royal Army Medical Corps

Year:

2015

Language:

english

File:

PDF, 1.25 MB

english, 2015

10

A case of splenic rupture after non-penetrating injury from а plastic bullet

Mutafchiyski, Ventsislav, Popivanov, Georgi, Kjossev, Kirien

Journal:

Year:

2016

Language:

english

File:

PDF, 134 KB

english, 2016

11

Prescribing Gevrey singularities for solutions of pseudodifferential operators

Ama Albanese, Angela, Popivanov, Petar, Zanghirati, Luisa

Journal:

Journal of Mathematics of Kyoto University

Year:

2009

Language:

english

File:

PDF, 232 KB

english, 2009

12

Singularities of the Solutions of Non-Correct Mixed Problems for Second Order Strictly Hyperbolic Operators

Todor V. Gramchev, Peter R. Popivanov

Journal:

Mathematische Nachrichten

Year:

1985

Language:

english

File:

PDF, 433 KB

english, 1985

13

On the Solvability of Equations with Prescribed Gauss Curvature Changing its Sign

P. Popivanov, N. Kutev

Journal:

Mathematische Nachrichten

Year:

1988

Language:

english

File:

PDF, 320 KB

english, 1988

14

Viscosity solutions to the degenerate oblique derivative problem for fully nonlinear elliptic equations

P. Popivanov, N. Kutev

Journal:

Mathematische Nachrichten

Year:

2005

Language:

english

File:

PDF, 266 KB

english, 2005

15

The Darboux Problems in R3 for a Class of Degenerating Hyperbolic Equations

N.I. Popivanov, M. Schneider

Journal:

Journal of Mathematical Analysis and Applications

Year:

1993

File:

PDF, 1.06 MB

1993

16

Method for single-trial readiness potential identification, based on singular spectrum analysis

Antoaneta Mineva, David Popivanov

Journal:

Journal of Neuroscience Methods

Year:

1996

Language:

english

File:

PDF, 963 KB

english, 1996

17

Boundary value problem with a tangential oblique derivative for second order quasilinear elliptic operators

P.R. Popivanov, D.K. Palagachev

Journal:

Nonlinear Analysis: Theory, Methods & Applications

Year:

1993

Language:

english

File:

PDF, 474 KB

english, 1993

18

On a singular boundary value problem for the differential equation using barrier strips

P.S. Kelevedjiev, D. O’Regan, N.I. Popivanov

Journal:

Nonlinear Analysis: Theory, Methods & Applications

Year:

2006

Language:

english

File:

PDF, 246 KB

english, 2006

19

Compact travelling waves and peakon type solutions of several equations of mathematical physics and their Cellular Neural Network realization

P. Popivanov, A. Slavova, P. Zecca

Journal:

Nonlinear Analysis: Real World Applications

Year:

2009

Language:

english

File:

PDF, 952 KB

english, 2009

20

On the global solvability in Gevrey classes on the n-dimensional torus

A.A. Albanese, P. Popivanov

Journal:

Journal of Mathematical Analysis and Applications

Year:

2004

Language:

english

File:

PDF, 249 KB

english, 2004

21

Asymptotic expansions of singular solutions for -D Protter problems

Nedyu Popivanov, Todor Popov, Rudolf Scherer

Journal:

Journal of Mathematical Analysis and Applications

Year:

2007

Language:

english

File:

PDF, 627 KB

english, 2007

22

Nonhypoellipticity and comparison principle for partial differential equations of Black–Scholes type

R. Agliardi, P. Popivanov, A. Slavova

Journal:

Nonlinear Analysis: Real World Applications

Year:

2011

Language:

english

File:

PDF, 242 KB

english, 2011

23

Effect of independent component analysis on multifractality of EEG during visual-motor task

D. Popivanov, S. Jivkova, V. Stomonyakov, G. Nicolova

Journal:

Signal Processing

Year:

2005

Language:

english

File:

PDF, 563 KB

english, 2005

24

Nonlinear prediction as a tool for tracking the dynamics of single-trial readiness potentials

Juliana Dushanova, David Popivanov

Journal:

Journal of Neuroscience Methods

Year:

1996

Language:

english

File:

PDF, 486 KB

english, 1996

25

Viscosity solutions to the degenerate oblique derivative problem for fully nonlinear elliptic equations

Petar Popivanov, Nickolai Kutev

Journal:

Comptes Rendus Mathematique

Year:

2002

Language:

french

File:

PDF, 63 KB

french, 2002

26

Organ antigens in the spermatozoa of man

R. P. Popivanov, V. Kh. Vylchanov

Journal:

Bulletin of Experimental Biology and Medicine

Year:

1965

Language:

english

File:

PDF, 297 KB

english, 1965

27

The data showing antigenic relationship between salmonella typhi and human leucocytes

V. Kh. Vilchanov, P. Popivanov

Journal:

Bulletin of Experimental Biology and Medicine

Year:

1962

Language:

english

File:

PDF, 213 KB

english, 1962

28

Heterogeneic antigens ofEscherichia colisimilar to antigens of human spermatozoa

R. P. Popivanov, N. N. Zhukov-Verezhnikov, I. D. Bulanov, I. I. Podoplelov, V. A. Mishchenko, L. S. Nakov, S. M. Zhivkov, K. I. Kirov, N. M. Svishcheva

Journal:

Bulletin of Experimental Biology and Medicine

Year:

1981

Language:

english

File:

PDF, 480 KB

english, 1981

29

A link between small divisors and smoothness of the solutions of a class of partial, differential operators

P. R. Popivanov

Journal:

Annals of Global Analysis and Geometry

Year:

1983

Language:

english

File:

PDF, 497 KB

english, 1983

30

Local solvability of some classes of linear differential operators with multiple characteristics

P. R. Popivanov

Journal:

Annali dell'Universita di Ferrara

Year:

1999

Language:

english

File:

PDF, 415 KB

english, 1999

31

On a nonsolvable partial differential operator

P. R. Popivanov

Journal:

Annali dell'Universita di Ferrara

Year:

2003

Language:

english

File:

PDF, 423 KB

english, 2003

32

A degenerate Neumann problem for quasilinear elliptic integro-differential operators

D.K. Palagachev, P.R. Popivanov, K. Taira

Journal:

Mathematische Zeitschrift

Year:

1999

Language:

english

File:

PDF, 131 KB

english, 1999

33

Periodic Solutions of the Burgers-Hopf Equation with Small Parameter and its Cellular Neural Network Model

Petar Popivanov, Angela Slavova, Pietro Zecca

Journal:

Mediterranean Journal of Mathematics

Year:

2008

Language:

english

File:

PDF, 769 KB

english, 2008

34

Existence results for second order boundary value problems using the barrier strip technique

P. S. Kelevedjiev, D. O’Regan, N. Popivanov, R. P. Agarwal

Journal:

Aequationes Mathematicae

Year:

2010

Language:

english

File:

PDF, 171 KB

english, 2010

35

Prevalence of Low Forearm Bone Density in a Bulgarian Female Referral Population

M. Boyanov, P. Popivanov

Journal:

Osteoporosis International

Year:

2002

Language:

english

File:

PDF, 116 KB

english, 2002

36

Multifractality of decomposed EEG during imaginary and real visual-motor tracking

D. Popivanov, V. Stomonyakov, Z. Minchev, S. Jivkova, P. Dojnov, S. Jivkov, E. Christova, S. Kosev

Journal:

Biological Cybernetics

Year:

2006

Language:

english

File:

PDF, 290 KB

english, 2006

37

Bone mineral density changes in women with systemic lupus erythematosus

M. Boyanov, R. Robeva, P. Popivanov

Journal:

Clinical Rheumatology

Year:

2003

Language:

english

File:

PDF, 268 KB

english, 2003

38

Global analytic and Gevrey solvability of sublaplacians under Diophantine conditions

A. A. Albanese, P. Popivanov

Journal:

Annali di Matematica Pura ed Applicata (1923 -)

Year:

2006

Language:

english

File:

PDF, 317 KB

english, 2006

39

On the solvability of a singular boundary-value problem for the equationf(t, x, x′,x″) = 0

M. K. Grammatikopoulos, P. S. Kelevedjiev, N. I. Popivanov

Journal:

Journal of Mathematical Sciences

Year:

2008

Language:

english

File:

PDF, 180 KB

english, 2008

40

Femoral neck bone mineral density and 10-year absolute fracture risk in a national representative sample of Bulgarian women aged 50

Anna-Maria Borissova, Rasho Rashkov, Mihail Boyanov, Alexander Shinkov, Plamen Popivanov, Natalya Temelkova, Jordan Vlahov, Masha Gavrailova

Journal:

Archives of Osteoporosis

Year:

2011

Language:

english

File:

PDF, 215 KB

english, 2011

41

Removable singularities of a class of fully nonlinear partial differential equations

Journal:

Nonlinear Analysis: Theory, Methods & Applications

Year:

1992

Language:

english

File:

PDF, 506 KB

english, 1992

42

Fokl and BsmI polymorphisms of the vitamin D receptor gene and bone mineral density in a random Bulgarian population sample

Jivka Ivanova, Polet Doukova, Mihail Boyanov, Plamen Popivanov

Journal:

Endocrine (Springer)

Year:

2006

Language:

english

File:

PDF, 222 KB

english, 2006

43

Critical Gevrey index for hypoellipticity of parabolic operators and Newton polygones

Todor Gramchev, Petar Popivanov, Massafumi Yoshino

Journal:

Annali di Matematica Pura ed Applicata (1923 -)

Year:

1996

Language:

english

File:

PDF, 1.42 MB

english, 1996

44

Statistical procedures for interference EMG power spectra estimation

D. Popivanov, A. Todorov

Journal:

Medical and Biological Engineering and Computing

Year:

1986

Language:

english

File:

PDF, 2.20 MB

english, 1986

45

Time series analysis of brain potentials preceding voluntary movements

Journal:

Medical and Biological Engineering and Computing

Year:

1992

Language:

english

File:

PDF, 1.53 MB

english, 1992

46

Local solvability of semilinear partial differential equations

T. Gramchev, P. Popivanov

Journal:

Annali dell'Universita di Ferrara

Year:

1989

Language:

english

File:

PDF, 243 KB

english, 1989

47

Common Dynamic Properties of Biosignals During Cognition: Self-Similarity and Chaotic Dynamics of Both Response Times and EEG During Movement Imagery

David Popivanov, Armina Janyan, Elena Andonova, Maxim Stamenov

Journal:

Nonlinear Dynamics, Psychology, and Life Sciences

Year:

2003

Language:

english

File:

PDF, 97 KB

english, 2003

48

On the uniqueness of generalized and quasi-regular solutions to equations of mixed type in ℝ3

T. D. Hristov, N. I. Popivanov, M. Schneider

Journal:

Siberian Advances in Mathematics

Year:

2011

Language:

english

File:

PDF, 577 KB

english, 2011

49

Estimation of homogeneity of a set of evoked potentials with respect to its dispersion

D Popivanov, I Krekule

Journal:

Electroencephalography and Clinical Neurophysiology

Year:

1983

Language:

english

File:

PDF, 160 KB

english, 1983

50

EMG edges computer detection for synchronization of brain potentials

Journal:

Electroencephalography and Clinical Neurophysiology

Year:

1985

Language:

english

File:

PDF, 82 KB

english, 1985

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