bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Aerobic Exercises on the Ocular Parameters and the Psychic State of Glaucoma Patients
Authors: Lipkova Janka , Gregor T. , Kyselovicova O. , Skodova M. 
Published: February 2017

Abstract
Aim of the study was to assess the role of the physical activity in therapy of glaucoma — to find out the effect of aerobic exercise on visual field, intraocular pressure and the psychical state.
The study group consisted of fifteen glaucoma patients — women, mean age 49 years. Eight of them were enrolled in an aerobic exercise program of duration of 3 months. Seven patients — women, matched in age without any organized physical activity serve as control.
The Octopus glaucoma program was used for quantification of the visual field defects. Intraocular pressure was measured by using Goldmann’s and Schiotz’s tonometer.
EPI (Eysenck Personality Inventory) and STAI (State and Trait Anxiety inventory) were used in evaluating the psychical state.
The values of IOP before and after single exercise session were in normal range.
There were no significant differences between the input and output values of the parameters of visual field.
Intraocular pressure in course of the exercise program period was stable, in normal ranges in experimental and in control group as well.
The values of examined persons were in the center of the scale stability-lability and extraversion-introversion.
The values of anxiety (as a trait) were in norm, and they did not changed in course the period. The anxiety (as a state) significantly decreased (p<0, 05) in experimental group.
The glaucoma ocular parameters were kept in normal range during the exercise program period. The exercise did not cause the worsening of the ocular parameters after the single (individual) session. A positive effect of exercise program on the anxiety was ascertained.
Dissociation, Chaos and Transcendent Function
Authors: Bob Petr 
Published: February 2017

Abstract
Psychological findings described in original Janet’s formulation of dissociation, Jung’s complex theory, Putnam’s theory of discrete behavioral states and nonlinear dynamic principles of brain and cognitive processes suggest interesting principles for understanding dissociative processes on levels of competitive neural assemblies and their mental representations. In this context, Jung’s term transcendent function that enables integration of dissociated states might be related to nonlinear chaotic processes that could represent its neurophysiological correlate. In these self-organizing systems “linear causality” is replaced by “circular causality” that represents a concept useful for describing multilevel interactions on the level of neurons as well as on the level of consciousness related to archetypal intentional action and images in the mind during process of formatting complexes from the pre-existing archetypes as ordering factors of chaotic fluctuations. From the point of Jungian theory these selforganizing psychophysiological processes may be understood as a source of mental images of psychological wholeness mainly as images of circles and symmetric arrangements that could underly brain functions as well as rules of the human psyche that are connected to experienced union of psychological opposites that integrate dissociated states.
The Production of Consciousness Out of States of Consciousness
Authors: Murphy Todd 
Published: February 2017

Abstract
It has been found that there are five million magnetite crystals per gram in the human brain. Interestingly, the meninges, has twenty times that number. These ‘biomagnetite’ crystals demonstrate two interesting features. The first is that their shapes do not occur in nature, suggesting that they were formed in the tissue, rather than being absorbed from outside. The other is that these crystals appear to be oriented so as to maximize their magnetic moment, which tends to give groups of these crystals the capacity to act as a system. We hypothesize that the entire set of modalities, cognitive and sensory, may be heuristically compared to a sound mixing board. In this metaphor, all the various modalities are represented as vertical rheostats with enhanced functioning increasing towards the top, and suppressed function increasing towards the bottom. Further, the act of becoming conscious of phenomena in any given modality involves the adjustment of that modality’s ‘rheostat’.
Identifying memory impairment and early dementia in primary care
Authors: Grober Ellen , Wakefield Dorothy , Ehrlich Amy R. , Mabie Peter , Lipton Richard B. 
Published: February 2017

AbstractIntroductionThis study examined the operating characteristics of two‐stage case finding to identify memory impairment and very mild dementia.MethodsPrimary care patients underwent two‐stage testing and a subsequent diagnostic assessment to assess outcomes. Patients who screen positive for subjective cognitive decline on the Informant Questionnaire on Cognitive Decline in the Elderly undergo memory testing with the Free and Cued Selective Reminding Test with Immediate Recall. Outcomes were determined without access to these data. A split‐half design with discovery and confirmatory samples was used.ResultsOne hundred seventeen of 563 (21%) patients had dementia and 68 (12%) had memory impairment but not dementia. Operating characteristics were similar in the discovery and confirmatory samples. In the pooled sample, combined, patients with memory impairment or dementia were identified with good sensitivity (72%) and high specificity (90%). Differences in ethnicity, educational level, or age (≤75, >75) did not affect classification accuracy.DiscussionTwo‐stage screening facilitates the efficient identification of older adults with memory impairment or dementia.
Mortality and risk of dementia in normal‐pressure hydrocephalus: A population study
Authors: Jaraj Daniel , Wikkelsø Carsten , Rabiei Katrin , Marlow Thomas , Jensen Christer , Östling Svante , Skoog Ingmar 
Published: February 2017

AbstractIntroductionWe examined mortality, dementia, and progression of hydrocephalic symptoms among untreated individuals with idiopathic normal‐pressure hydrocephalus (iNPH) in a population‐based sample.MethodsA total of 1235 persons were examined between 1986 and 2012. Shunted individuals were excluded. We examined 53 persons with hydrocephalic ventricular enlargement (probable iNPH: n = 24, asymptomatic or possible iNPH: n = 29). Comparisons were made with individuals without hydrocephalic ventricular enlargement.ResultsThe 5‐year mortality was 87.5% among those with probable iNPH. The hazard ratio (HR) for death was 3.8 (95% confidence interval [CI]: 2.5–6.0) for probable iNPH. Those with possible iNPH and asymptomatic hydrocephalic ventricular enlargement had increased risk of developing dementia, HR 2.8 (95% CI: 1.5–5.2). Only two individuals with hydrocephalic ventricular enlargement remained asymptomatic.DiscussionIn the present sample, persons with clinical and imaging signs of iNPH had excess mortality and an increased risk of dementia. The data also suggest that radiological signs of iNPH might be more important than previously supposed.
Bounded approximants to monotone operators on Banach spaces
Authors: Fitzpatrick S. , Phelps R.R. 
Published: February 2017

It is shown that for any maximal monotone set-valued operator

T

on a real Banach space

E

, there is a sequence

\{T_n\}

of bounded maximal monotone operators which have nonempty values at each point and which converge to

T

in a reasonable sense. Better convergence properties are shown to hold when

T

is in a new proper subclass of maximal monotone operators (the “locally” maximal monotone operators), a subclass which coincides with the entire class in reflexive spaces. The approximation method is patterned on the one which results when the (maximal monotone) subdifferential

∂f

of a proper lower semicontinuous convex function

f

is approximated by a sequence of bounded subdifferentials

\{∂f_n\}

, where each

f_n

is the (continuous and convex) inf-convolution of

f

with the function

n ‖ · ‖

. The main advantage of this approximation scheme over the classical Moreau–Yosida approximation method is that it exists in non-reflexive Banach spaces.

Résumé

On montre que, pour chaque opérateur maximal monotone

T

sur un espace de Banach

E

, il existe une suite

\{T_n\}

d’opérateurs maximaux monotones bornés et non vides en chaque point, tel que

T_n → T

dans un sens raisonnable. De meilleures propriétés de convergence sont obtenues quand

T

est « localement maximal monotone », une sous-classe nouvelle de celle des opérateurs maximaux monotones et qui coïncide avec celle-ci dans les espaces réflexifs. La méthode d’approximation procède selon l’exemple de l’approximation d’une sous-différentielle

∂f

(où

f

est propre, convexe, et semi-continue inférieur) au moyen d’une suite

\{∂f_n\}

de sous-différentielles, où chaque

f_n

est la inf-convolution (continue et convexe) de

f

avec la fonction

n ‖ · ‖

. L’avantage principal de cette méthode sur la méthode classique de Moreau–Yosida est de rester applicable dans les espaces de Banach non réflexifs.
Generalized characteristics uniqueness and regularity of solutions in a hyperbolic system of conservation laws
Authors: Dafermos C.M. , Geng X. 
Published: February 2017

Using the method of generalized characteristics, the authors investigate uniqueness and regularity of solutions of the Cauchy problem for a special system of hyperbolic conservation laws, with coinciding shock and rarefaction wave curves, arising in the theory of isotachophoresis.

Résumé
En utilisant la méthode des caractéristiques généralisées, on montre l’unicité et la régularité des solutions du problème de Cauchy pour un système hyperbolique de lois de conservation provenant de la théorie de l’électrophorèse.
Lp regularity of velocity averages
Authors: Diperna R.J. , Lions P.L. , Meyer Y. 
Published: February 2017

In this article, we present some general regularity results for “velocity averages”
i. e.
averages in

ν

of functions

f(x, v)

for which

(v.∇_x f)

has some given regularity. We are able to cover general regularity classes for both

f

and

(v.∇_x f)

and we thus extend various known results. Our methods of proof rely on Littlewood–Paley type decompositions, interpolation arguments and a spectral decomposition adapted to the “velocity direction”.

Résumé

Nous présentons dans cet article des résultats généraux de régularité de moyennes en vitesse (c’est-à-dire de moyennes en

ν

) de fonctions

f(x, v)

pour lesquelles

(v.∇_x f)

a une certaine régularité. Nos résultats permettent des classes de régularité générales pour

f

et

(v.∇_x f)

, généralisant ainsi plusieurs résultats antérieurs. Notre méthode de preuve repose sur les décompositions de type Littlewood–Paley, des arguments d’interpolation et une décomposition spectrale adaptée à la « direction des vitesses ».
On the modified Enskog equation for elastic and inelastic collisions. Models with spin
Authors: Perthame Benoît , Esteban Maria J. 
Published: February 2017

Under appropriate assumptions on the collision kernel we prove the existence of global solutions of the Enskog equation with elastic or inelastic collisions. We consider also this equation with spin, that is, the case when the angular velocities of the colliding particles are taken into account. In this case we also prove global existence results.

Résumé
Nous démontrons que sous des hypothèses appropriées sur le noyau de collision il existe une solution globale de l’équation d’Enskog avec collisions élastiques ou inélastiques. Nous considérons aussi le modèle avec spin, où la vitesse angulaire des particules n’est pas négligée dans la description des collisions. Dans ce cas nous prouvons aussi des résultats d’existence de solutions globales en temps.
On the static and dynamic study of oscillations for some nonlinear hyperbolic systems of conservation laws
Authors: Rascle Michel 
Published: February 2017

We first show that no oscillation can
appear
in a 2 × 2 hyperbolic system whose two eigenvalues are linearly degenerate. For such a system, oscillations can only propagate. The method uses both compensated compactness ideas and the characteristics of the system, which is partly formal. We then make some heuristic remarks on the extension to the 3 × 3 gas dynamics system, and we link this question to the “separation of the wave cone and the constitutive manifold” (Ron DiPerna).

Résumé

On montre d’abord qu’aucune oscillation ne peut
apparaître
dans un système 2 × 2 dont les deux valeurs propres sont linéairement dégénérées. pour un tel système, les oscillations peuvent seulement se propager. La méthode utilise à la fois des idées de compacité par compensation et les caractéristiques du système, ce qui est partiellement formel. On fait ensuite quelques remarques heuristiques sur le système 3 × 3 de la dynamique des gaz, et on relie cette question à la « séparation du cône d’ondes et de la variété constitutive » (Ron DiPerna).
Oscillations non linéaires des systèmes hyperboliques: méthodes et résultats qualitatifs
Authors: Serre Denis 
Published: February 2017

One studies the Cauchy problem for hyperbolic systems of first order conservation laws

∂_tu + ∂_xf(u) = 0

, with an oscillating sequence of initial data. The oscillations have an

O(1)

amplitude; one may think to

u^{\mathrm{\varepsilon }}(x,0) = a(x;\frac{x}{\mathrm{\varepsilon }})

, where

a(x,.)

is periodic.

It turns out that one part of the initial oscillations are killed because of genuine non-linearity. But the most of the physically relevant systems are endowed with at least one linearly degenerate characteristic field, which allows oscillations of a part of the field

u

.

Our goal is to describe these oscillations and their propagation. There are several steps:
Of particular interest is the computation of the group speeds, which are nothing but the characteristic values of the relaxed system. Formulas are given, especially for the full gas dynamics, which are all but trivial.

The description of oscillations has been asked by Ronald DiPerna in 1985, who introduced the similar concept of “measure-valued solutions”. An equivalent problem is to determine whether the set of solutions is closed or not in the weak-star topology of

L^∞

. Thus this work is an attempt to understand well-posedness (or illposedness, the both occur depending on the system) in

L^∞

, one of the two classes where a ferv existence results are known.

This study has also implications for numerical analysis. It suggests multi-scale methods which would give accurate values of speed when mild oscillations occur.
The paper is organized into three parts. Section II-V are devoted to a rigourous analysis with applications. Sections VI-VIII concerns speculative (but efficient) ideas; this heuristic procedure gives the first description of the oscillations in gas dynamics and elastic string. The end of the article is concerned with a conjecture I made in 1983 about the compensated compactness method.

Résumé
On considère les oscillations de grande amplitude des systèmes hyperboliques de lois de conservation. Les champs vraiment non linéaires en tuent une partie tandis que les champs linéairement dégénérés en laissent une autre part se propager selon des vitesses de groupe obéissant à des formules compliquées. Cet article rassemble des résultats rigoureux via la compacité par compensation et des calculs heuristiques.
Maximum principles and a priori estimates for a class of problems from nonlinear elasticity
Authors: Bauman Patricia , Owen Nicholas C. , Phillips Daniel 
Published: February 2017

We consider smooth solutions,

\mathscr U

, to the nonlinear elliptic system associated with a two dimensional elastic material which has energy functional

\mathscr W(\mathscr U)=\int_\Omega \Big( \frac{|D\mathscr U|^2}2 + H(\operatorname{det} D\mathscr U)\Big) dX

The function

H(d)

is nonnegative, convex and unbounded in a neighborhood of zero. Two maximum principles are proved for

D\mathscr U

and we show that if

Ω'\Subset Ω

then

\Vert D\mathscr U \Vert_{C^\alpha(\Omega')}

and

\Vert D\mathscr U^{-1} \Vert_{L^\infty(\Omega')}

are bounded
a priori
in terms of

\Vert D\mathscr U \Vert_{L^p(\Omega')}

and

\mathscr W(\mathscr U)

for some

p = p(H)

.

Résumé

On considère une solution régulière

\mathscr U

du système elliptique non linéaire associé à la fonctionnelle d’énergie

\mathscr W(\mathscr U)=\int_\Omega \Big( \frac{|D\mathscr U|^2}2 + H(\operatorname{det} D\mathscr U)\Big) dX

en dimension 2, la fonction

H

étant positive, convexe, et

H(t) → + ∞

quand

t → 0_+

. On démontre deux principes du maximum et une estimation de

D\mathscr U

à l’intérieur de

Ω

.
On the existence of solutions to a problem in multidimensional segmentation
Authors: Congedo G. , Tamanini I. 
Published: February 2017

We prove the existence of a minimizer for a multidimensional variational problem related to the Mumford-Shah approach to computer vision.

Résumé

On démontre l’existence d’un minimum pour un problème variationnel en dimension

n

, voisin de celui que Mumford et Shah ont postulé à la base de la vision artificielle.
Exposant critique de Sobolev et régularité des solutions d’équations elliptiques
Authors: Benmohamed A. , Robbiano L. 
Published: February 2017

We study the regularity of solutions to elliptic problems. The coefficients of the term of order one [resp. zero] are in

L^n

[resp.

L^{n/2}

]. This allows us to deduce the regularity of solutions to some non linear elliptic problems with Sobolev critical exponent.

Résumé

Nous étudions la régularité des solutions de problèmes elliptiques avec des termes d’ordre un [resp. zéro] à coefficients dans

L^n(\mathbb R^n

) [resp.

L^{n/2}(\mathbb R^n

)]. Cela permet de déduire la régularité des solutions de certains problèmes elliptiques non linéaires avec exposant critique de Sobolev.
Sur une équation quasilinéaire d’ordre 2 non elliptique
Authors: Aubert G. 
Published: February 2017

We prove, for small data, the existence of a regular solution for the quasilinear problem:

−\mathrm{div}\left(\mathrm{D}g\left(\mathrm{D}u\right)\right) + \mathrm{F}\left(x,u\right) = 0,\:u \in \mathrm{W}_{0}^{1,p}\left(\mathrm{\Omega }\right).

We do not assume any condition of ellipticity on

g

; only we suppose that

g

is the difference of two stricly convex functions.

Résumé
On prouve l’existence, pour des données petites, d’une solution régulière pour le problème quasilinéaire :

−\mathrm{div}\left(\mathrm{D}g\left(\mathrm{D}u\right)\right) + \mathrm{F}\left(x,u\right) = 0,\:u \in \mathrm{W}_{0}^{1,p}\left(\mathrm{\Omega }\right).

On ne fait aucune hypothèse d’ellipticité sur

g

; nous supposons simplement que

g

est la différence de deux fonctions strictement convexes.
On a superlinear elliptic equation
Authors: Wang Zhi Qiang 
Published: February 2017

In this note we establish multiple solutions for a semilinear elliptic equation with superlinear nonlinearility without assuming any symmetry.

Résumé
Dans cet article, nous montrons l’existence de plusieurs solutions pour une équation semi-linéaire elliptique avec une condition de non-linéarité superlinéaire, sans hypothèse de symmétric
On the existence of multiple geodesics in static space-times
Authors: Fortunato D. , Giannoni F. , Benci V. 
Published: February 2017

In this paper we study the problem of the existence of geodesies in static space-times which are a particular case of Lorentz manifolds. We prove multiplicity results about geodesies joining two given events and about periodic trajectories having a prescribed period.

Résumé
Dans ce papier on étudie le problème de l’existence de géodésiques dans les espaces-temps statiques qui représentent un cas particulier de variétés de Lorentz. On démontre ici des résultats de multiplicité pour les géodésiques qui relient deux events fixés et pour les trajectoires périodiques ayant une période fixée.
Propriétés des matrices « bien localisées » près de leur diagonale et quelques applications
Authors: Jaffard S. 
Published: February 2017

In the following paper, two classes of infinite matrices are studied (matrices with exponentially or polynomially decreasing coefficients away from the diagonal). Properties of symbolic calculus type are shown: Inversibility on

l^2

implies that the inverse has the same decay property. It is also shown that inversion is a “local” transformation of the matrix: A change in the coefficients is not felt far away from the area changed. Two applications concerning the properties of orthonormal bases of wavelets are given.

Résumé

Nous étudions dans cet article deux classes de matrices infinies (matrices dont les coefficients sont à décroissance exponentielle ou polynomiale en s’éloignant de la diagonale). Nous montrons qu’elles possèdent des propriétés du type « calcul symbolique » : L’inversibilité sur

l^2

implique que les coefficients de la matrice inverse ont la même propriété de décroissance. De plus, l’inversion est une opération « locale » : Une perturbation des coefficients de A n’est pas ressentie sur son inverse loin de la zone de perturbation. Nous fournissons deux exemples d’applications concernant les propriétés des bases orthonormées d’ondelettes.
Periodic solutions for N-body type problems
Authors: Coti Zelati Vittorio 
Published: February 2017

In this paper we prove the existence of a

T

-periodic solution (for any given

T

) for a class of Hamiltonian systems which includes the

N

-body one. We also prove that the solution we find is not a simultaneous collision one.

Résumé

Dans l’article on démontre l’existence d’une solution

T

-périodique (pour chaque

T > 0

) pour un ensemble de systèmes hamiltoniens comprenant celui des

N

-corps. On démontre aussi que la solution ainsi trouvée n’est pas une solution de collision totale.
An eigenvalue problem for the complex Monge–Ampère operator in pseudoconvex domains
Authors: Kutev N.D. , Ramadanov I.P. 
Published: February 2017

A problem of existence and unicity of eigenvalues and corresponding eigenfunctions concerning the complex Monge–Ampère operator

\operatorname{det}\left(\mathrm{∂}^{2}u/ \mathrm{∂}z_{j}\mathrm{∂}\bar z_{k}\right)

and right-hand side of the forme

F(z, u)

is studied in a bounded strictly pseudoconvex domain of

\mathbb C^n

.

Résumé

Un problème d’existence et d’unicité de valeurs propres et de fonctions correspondantes concernant l’opérateur de Monge–Ampère complexe

\operatorname{det}\left(\mathrm{∂}^{2}u/ \mathrm{∂}z_{j}\mathrm{∂}\bar z_{k}\right)

à second membre de la forme

F(z, u)

est étudié dans un domaine borné strictement pseudoconvexe de

\mathbb C^n

.
An approach of deterministic control problems with unbounded data
Authors: Barles G. 
Published: February 2017

We prove that the value function of a deterministic unbounded control problem is a viscosity solution and the maximum viscosity subsolution of a family of Bellman Equations; in particular, the one given by the hamiltonian, generally discontinuous, associated formally to the problem by analogy with the bounded case. In some cases, we show that this equation is equivalent to a first-order Hamilton–Jacobi Equation with gradient constraints for which we give several existence and uniqueness results. Finally, we indicate other applications of these results to first-order H. J. Equations, to some cheap control problems and to uniqueness results in the nonconvex Calculus of Variations.

Résumé
Nous prouvons que la fonction valeur d’un problème de contrôle déterministe non borné est une solution de viscosité et la soussolution de viscosité maximale d’une famille d’équations de Bellman; en particulier, celle donnée par l’hamiltonien, généralement discontinu, associé formellement au problème par analogie avec le cas borné. Dans certains cas, nous montrons que cette équation est équivalente à une équation de Hamilton–Jacobi du premier ordre avec contraintes sur le gradient pour laquelle nous donnons des résultats d’existence et d’unicité variés. Enfin, nous indiquons d’autres applications de ces résultats à des équations de H. J. du premier ordre, à certains problèmes de contrôle impulsionnel ainsi qu’à des résultats d’unicité dans des problèmes non convexes du Calcul des Variations.