bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Harnack-Type Inequality for a Prescribed-Curvature Equation on a Domain with Boundary
Authors: Gluck Mathew R. , Guo Ying , Zhang Lei 
Published: March 2016

Abstract
In this paper the method of moving spheres is used to derive a Harnack-type inequality for positive solutions of

where n ≥ 4, ℝ+
n is the upper half of Euclidean space and B1
+ is the upper half unit ball. Under suitable assumptions on K(x) and c(x), we show that there is a positive constant C such that for all positive solutions u, a Harnack-type inequality holds. As a consequence of this inequality we obtain the following energy estimate

.
Qualitative Properties of Anisotropic Elliptic Schrödinger Equations
Authors: Afrouzi Ghasem A. , Mirzapour M. , Rdulescu Vicenţiu D. 
Published: March 2016

AbstractWe consider a class of nonlinear stationary Schrödinger-type equations and we are concerned with sufficient properties that guarantee the existence of multiple solutions in a suitable Sobolev space with variable exponents. We first establish that in the case of small perturbations, the problem admits at least two weak solutions. Next, in the case of convexconcave nonlinearities, we obtain conditions for the existence of infinitely many solutions with high (resp., small) energies. The arguments combine variational techniques with a careful analysis of the energy levels.
Nonuniform Hyperbolicity and Admissibility
Authors: Barreira Luis , Valls Claudia , Dragičevič Davor 
Published: March 2016

Abstract
For a nonautonomous dynamics defined by a sequence of linear operators, we consider the notion of an exponential dichotomy with respect to a sequence of norms and we characterize it completely in terms of the admissibility in pairs of spaces (ℓp, ℓq), with p and q not necessarily equal. This includes the notion of a nonuniform exponential dichotomy as a very special case. Moreover, we consider a general noninvertible dynamics and a strong nonuniform exponential behavior. The latter is the typical situation from the point of view of smooth ergodic theory.
A Correction and an Extension of Stampacchia’s Work on the Geometric BVP
Authors: Vidossich Giovanni 
Published: March 2016

Abstract
G. Stampacchia introduced the geometric boundary value problem for ODEs in his doctoral thesis and published four papers related to it. Here we point out that the proof of his last theorem on the subject is incorrect and we provide a substitute for it as well as a generalizations of some of his earlier results.
Variational Methods on Finite Dimensional Banach Spaces and Discrete Problems
Authors: Bonanno Gabriele , Candito Pasquale , D’Aguí Giuseppina 
Published: March 2016

Abstract
In this paper, existence and multiplicity results for a class of second-order difference equations are established. In particular, the existence of at least one positive solution without requiring any asymptotic condition at infinity on the nonlinear term is presented and the existence of two positive solutions under a superlinear growth at infinity of the nonlinear term is pointed out. The approach is based on variational methods and, in particular, on a local minimum theorem and its variants. It is worth noticing that, in this paper, some classical results of variational methods are opportunely rewritten by exploiting fully the finite dimensional framework in order to obtain novel results for discrete problems.
An Elliptic Equation Involving Exponential Critical Growth in ℝ2
Authors: Albuquerque Francisco S. B. , Medeiros Everaldo S. 
Published: March 2016

Abstract
We study the following class of nonhomogeneous Schrödinger equations
−Δu + V(|x|)u = Q(|x|) f(u) + h(x) in ℝ2,
where V and Q are unbounded or decaying radial potentials, the nonlinearity f (s) has exponential critical growth and the nonhomogeneous term h belongs to the dual of an appropriate functional space. By combining minimax methods and a version of the Trudinger-Moser inequality, we establish the existence and multiplicity of weak solutions for this class of equations.
Resonant-Superlinear Elliptic Problems Using Variational Methods
Authors: Silva Edcarlos Domingos da , Ribeiro Bruno 
Published: March 2016

Abstract
In this work we establish existence and multiplicity of solutions for resonant-superlinear elliptic problems using appropriate variational methods. The nonlinearity is resonant at −∞ and superlinear at +∞ and the resonance phenomena occurs precisely in the first eigenvalue of the corresponding linear problem. Our main theorems are stated without the well known Ambrosetti-Rabinowitz condition.
Positive and Nodal Solutions of Nonlinear Schrödinger Equations in a Saturable Medium
Authors: Maia Liliane A. , Ruviaro Ricardo 
Published: March 2016

Abstract
We consider the nonlinear Schrödinger equation −Δu + V(x)u = f (x, u), x ∈ ℝN, where V is invariant under an orthogonal involution and converges to a positive constant as |x| → +∞ and the nonlinearity f is asymptotically linear at infinity. Existence of a positive solution, as well as some results on the existence of a class of sign-changing solutions is presented. The new idea is to use the projection on the Pohozaev manifold associated with the problem at infinity in order to show that a min-max energy level is in the appropriate range for compactness.
Dynamics of a Class of Advective-diffusive Equations in Ecology
Authors: Aleja D. , López-Gómez J. 
Published: March 2016

Abstract
In this paper we characterize the dynamics of a generalized version of the model of Belgacem and Cosner [5] within the range of values of the parameters where the trivial steady state is unstable and the problem cannot admit a positive steady state. In such regimes, the dynamics is governed by the metasolutions.
On Von Kármán Equations and the Buckling of a Thin Circular Elastic Plate
Authors: Janczewska Joanna , Zgorzelska Anita 
Published: March 2016

Abstract
We shall be concerned with the buckling of a thin circular elastic plate simply supported along a boundary, subjected to a radial compressive load uniformly distributed along its boundary. One of the main engineering concerns is to reduce deformations of plate structures. It is well known that von Kármán equations provide an established model that describes nonlinear deformations of elastic plates. Our approach to study plate deformations is based on bifurcation theory. We will find critical values of the compressive load parameter by reducing von Kármán equations to an operator equation in Hölder spaces with a nonlinear Fredholm map of index zero. We will prove a sufficient condition for bifurcation by the use of a gradient version of the Crandall-Rabinowitz theorem due to A.Yu. Borisovich and basic notions of representation theory. Moreover, applying the key function method by Yu.I. Sapronov we will investigate the shape of bifurcation branches.
Ground States for Nonlinear Schrödinger Equations with a Sign-changing Potential Well
Authors: Wang Zhi-Qiang , Xia Jiankang 
Published: March 2016

Abstract
In this paper, we consider the ground state solutions for a class of nonlinear Schrödinger equations

where 2 < p < 2*. We investigate the case λ > inf σ (−Δ + V), i.e., an indefinite problem.
We characterize the ground states as minimizers of the variational functional on a modified Nehari manifold.
Semilinear Elliptic Equation with Biharmonic Operator and Multiple Critical Nonlinearities
Authors: Bhakta Mousomi 
Published: March 2016

Abstract
We study the existence and non-existence of nontrivial weak solution of

,
where N ≥ 5, and . Using Pohozaev type of identity, we prove the non-existence result when 1 < q < 2**. On the other hand when the equation has multiple critical nonlinearities i.e. q = 2** and −(N − 2)2 ≤ μ < μ1, we establish the existence of nontrivial solution, using the Mountain-Pass theorem by Ambrosetti and Rabinowitz.
Liouvillian First Integrals for Generalized Riccati Polynomial Differential Systems
Authors: Llibre Jaume , Valls Claudia 
Published: March 2016

Abstract
We study the existence and non-existence of Liouvillian first integrals for the generalized Riccati polynomial differential systems of the form xʹ = y, yʹ = a(x)y2 +b(x)y+c(x), where a(x), b(x) and c(x) are polynomials.
Zur Schärfung des Bibliotheksprofils durch Vermittlung von Informationskompetenz an Lehrende: Ein Praxisbericht
Authors: Wollschläger-Tigges Martin , Simpson Anna Lea 
Published: March 2016

Zusammenfassung:
Lehrende der FH Bielefeld identifizieren die Bibliothek der Hochschule z. T. in einem klassischen Verständnis mit Büchern und Einführungsveranstaltungen. Damit zeigen sie ein ungenaues Bild von den vielfältigen Dienstleistungen und Services der Bibliothek. Um dieses ungenaue Verständnis zu verbessern, sollen die Dienstleistungen und Services der Hochschulbibliothek besser kommuniziert werden. Ein hierzu entwickelter Workshop zum Erwerb von bzw. zur Weiterentwicklung der persönlichen Informationskompetenz (IK) für Lehrende soll zu einer Schärfung des Bibliotheksprofils führen. Die Anknüpfungspunkte und v. a. die Entwicklung, Umsetzung und Weiterentwicklung dieses Ansatzes zeichnet dieser Praxisbericht nach. Es zeigt sich, dass das Konzept inhaltlich und auch methodisch auf Interesse stößt; sich aber Entwicklungspotentiale v. a. in einer Sequenzierung einzelner IK-Inhalte, einer dezentralen Veranstaltungsform sowie in einer direkten Initiierung von Workshops durch die Bibliothek ergeben. Mit dem vorgestellten Ansatz sind Bibliotheken in der Lage, ihr Image bei einer spezifischen Zielgruppe zu korrigieren, indem über sachliche Inhalte sowohl ein Nutzen für Lehrende als auch für die Bibliothek geschaffen wird.
Uniaxial Properties versus Temperature, Creep and Impact Energy of an Austenitic Steel
Authors: Brnic Josip , Turkalj Goran , Krscanski Sanjin , Vukelic Goran , Canadija Marko 
Published: March 2016

Abstract
In this paper, uniaxial material properties, creep resistance and impact energy of the austenitic heat-resistant steel (1.4841) are experimentally determined and analysed. Engineering stress–strain diagrams and uniaxial short-time creep curves are examined with computer-controlled testing machine. Impact energy has been determined and fracture toughness assessed. Investigated data are shown in the form of curves related to ultimate tensile strength, yield strength, modulus of elasticity and creep resistance. All of these experimentally obtained results are analysed and may be used in the design process of the structure where considered material is intended to be applied. Based on these results, considered material may be classified as material of high tensile strength (688 MPa/293 K; 326 MPa/923 K) and high yield strength (498 MPa/293 K; 283 MPa/923 K) as well as satisfactory creep resistance (temperature/stress

→

$ \to $

strain (%) at 1,200 min: 823 K/167 MPa

→

$ \to $

0.25 %; 923 K/85 MPa

→

$ \to $

0.2 %).
Simulation of the Selective Hydrogenation of C3-Cut in the Liquid Phase
Authors: Mary Gaetan , Esmaeili Amin , Chaouki Jamal 
Published: March 2016

Abstract
In this work, the selective hydrogenation of C3-cut in the liquid phase has been investigated. A realistic model has been developed to simulate the selective transformation of methylacetylene (MA) and propadiene (PD) into propylene in an industrial-scale reactor. The reaction rates have been determined for the gas phase hydrogenation process and adapted for the liquid phase by considering several changes including the catalyst activity and the concentration of reactive components. In the last part of this work, a three-phase hydrodynamic model was developed and the kinetic and hydrodynamic models were then combined in order to achieve the global reactor model. In addition, the results obtained from the model were compared to those from an industrial reactor. It was found that there is a good agreement between the simulation predictions and the output of the real industrial reactor.
Examining the usefulness to learners of processes taught in L2 English listening courses
Authors: Yeldham Michael 
Published: March 2016

AbstractScholars have recommended various listening processes to help develop second language listeners’ abilities, processes that have been largely included in current listening course materials. However, there has been little research examining the usefulness of these various processes for the listeners, and therefore knowledge is lacking into which of these processes may be worth foregrounding in such courses and why. This study provides initial insights into these areas. Lower-intermediate level learners are taught in two listening courses, and then provide accounts of which strategies and skills benefitted them the most (and also the least, in some instances), and also reasons why. Learners’ views are supported by their accompanying growth in listening proficiency, and where possible, in the relevant strategy or skill they are evaluating. The study also provides information regarding the possible sequencing of some processes in a listening course.
Glucose absorption in the intestine of albino rats
Authors: Oluwasogo Olalubi A. , Victor Owoyele B. , Tayo Ayinla M. , Kehinde Akintunde J. 
Published: March 2016

Abstract

Background: The ability to absorb substances from the external environment is one of the features that make animals different from inanimate objects. In mammalian species, this quality is mainly the role of the small intestine. The process of absorption mainly takes place in the small intestine. This study was carried out to investigate the rate of glucose absorption in the intestine of albino rats and the effect of calcium and ouabain on the rate of glucose absorption.

Methods: Albino rats weighing between 200 and 250 g were used for this experiment. Guts were isolated and cut to segments. Test solution was injected into each of the isolated segments, which were then assayed for glucose.

Results: The result revealed that the rate of glucose absorption in the intestine of albino rats were found to be 3.02×10−1 g/min at the mucosa-to-serosa surface and 3.00×10−1 g/min at the serosa-to-mucosa surface, indicating that glucose was absorbed at both surfaces and that the rate of glucose absorption was higher in the mucosa-to-serosa direction than in the opposite direction. The rate of intestinal glucose absorption at different regions of the intestine and the effect of varying concentrations of calcium on the rate of glucose absorption revealed that glucose absorption was highest at the duodenum and lowest at the ileum.

Conclusions: Ouabain blocked the rate of absorption of glucose in the intestine of albino rats.
Identification of a dominant vocabulary in ELF interactions
Authors: Gilner Leah 
Published: March 2016

Abstract
This paper reports on several studies whose common theme is the elicitation of the lexical preferences of speakers of English in localized and globalized settings. Findings from analyses of various corpora show that there exists a relatively small set of preferred words that speakers of English rely on regardless of where the interaction takes place, with whom they are interacting, and what the purpose of the interaction is. Results also show that these lexical preferences are consistently prevalent to the extent that it is possible to advance the hypothesis that a relatively stable dominant vocabulary dynamically emerges out of ELF speaker interactions in order to serve certain communicative functions.
A case of mature teratoma with a falsely high serum estradiol value measured with an immunoassay
Authors: Hosokawa Mayumi , Shibata Hironori , Ishii Tomohiro , Fujino Akihiro , Kuroda Tatsuo , Kosaki Kenjiro , Kameyama Kaori , Hasegawa Tomonobu 
Published: March 2016

AbstractImmunoassays (IAs) are widely used to measure concentration of serum estradiol (E2) despite some limitations including cross-reactivity. Liquid chromatography-tandem mass spectrometory (LC-MS/MS) for E2 measurement has a theoretically greater specificity and sensitivity than IAs. We report a case with unexpected discrepancy in E2 values measured by IA and LC-MS/MS.A 7-year-old girl was referred because of an ovarian tumor. Physical examinations revealed prepubertal statuses. Serum E2 with ECLIA was 69 pg/mL. GnRH stimulation test revealed a prepubertal response. On imaging studies, the diagnosis was mature teratoma of the right ovary. After tumor enucleation, the diagnosis was pathologically confirmed. E2 with ECLIA decreased to 11 pg/mL. Preoperative E2 with LC-MS/MS was 1.15 pg/mL.We conclude the preoperative E2 with ECLIA was falsely high. We speculate the antibody used in ECLIA had cross-reactivity to endogenous compounds. LC-MS/MS should be considered when high serum E2 measured with IA is inconsistent with physical and/or endocrinological data.
Solving Problems Associated with the Brain Drain: Fair Contracts, Legitimate States, and Appropriate Policy Measures
Authors: Brock Gillian 
Published: March 2016

Abstract
Several commentators focus substantial criticism on my proposals that require skilled citizens in poor developing states to assist those countries for short periods or with additional taxation measures. In particular, they are skeptical about any so-called fair contracts between governments and students that can defensibly bind students to perform service and pay taxes. They worry that the conditions and terms of these contracts cannot make for morally binding agreements. In Section 1 I review some key points from my overall argument strategy, indicating why the mechanism of fair contracts is a good focal point within the context of the debate. In Section 2 I consider and respond to several of the criticisms that aim to undermine the idea that students can enter into fair contracts that cover compulsory service and taxation programs. In Section 3, I consider prospects and pitfalls concerning extending some core lines of argument, mainly in response to Lea Ypi’s creative ideas.
Originating souls and original sin: An Initial Exploration of Dualism, Anthropology, and Sins Transmission
Authors: Farris Joshua 
Published: March 2016

SummaryThe doctrine of Original Sin is a subject of perennial theological fascination. Comparatively little attention has been paid, however, to the doctrine of original sin and discussions about the origin of the soul. In this article, I argue that of the various models of the soul’s origin on offer, it is something akin to what I call emergent-creationism that naturally provides the most explanatory metaphysical resources for making sense of the transmission of original sin.
Comparisons of Two Non-probabilistic Structural Reliability Analysis Methods for Aero-engine Turbine Disk
Authors: Liu Zheng , Yu Le , Li Yan-Feng , Mi Jinhua , Huang Hong-Zhong 
Published: March 2016

AbstractTurbine disk is a key component of aero-engine and the failure of turbine disk will lead to disastrous consequences, making the structural reliability analysis for the turbine disk as an urgent issue. Taking the turbine disk as the case study, this paper will compare two non-probabilistic structural reliability analysis methods of imprecise structural reliability analysis and interval structural reliability analysis aiming at providing a more profound understanding about the theoretical system of imprecise probability theory. Moreover, according to the comparisons, this paper will predict the prospects or the works should to be done for the widely application of imprecise probability theory.
PERBEDAAN STATUS KERENTANAN NYAMUK AEDES AEGYPTI TERHADAP MALATHION DI KABUPATEN BANTUL YOGYAKARTA
Authors: Sofiana Liena , Rahman Muhammad Surya 
Published: March 2016

<p><strong>Abstrak</strong></p><p>Demam berdarah dengue di Kabupaten Bantul selama 5 tahun terakhir menunjukkan wilayah Kecamatan Sewon termasuk dalam wilayah endemis dan Kecamatan Dlingo merupakan Kecamatan dan desa yang memiliki angka kejadian yang paling rendah, bahkan di Desa Dlingo pernah tidak mengalami kejadian Demam berdarah dengue. Penggunaan malathion sebagai salah satu upaya pencegahan yang berlangsung lama di Desa Panggungharjo dimungkinkan dapat terjadi resistensi, sehingga tujuan penelitian ini adalah untuk mengetahui status resistensi malathion di Desa Panggungharjo dan Dlingo. Penelitian pada tahun 2014 merupakan penelitian deskriptif dengan uji laboratorium. Objek penelitian dalam penelitian ini adalah nyamuk Aedes aegypti hasil rearing yang diperoleh di Desa Panggungharjo dan Dlingo Bantul yang kemudian diuji secara suseptibiltas. Hasil penelitian menunjukkan bahwa nyamuk Aedes aegypti yang berasal dari Desa Panggungharjo telah resistan dan nyamuk Aedes aegypti yang berasal dari Desa Dlingo tidak resisten melainkan masih dalam kategori sedang. Ada perbedaan tingkat resistensi malathion antara Desa Panggungharjo dan Dlingo Bantul Yogyakarta.</p><p>Kata Kunci : Aedes aegypti; Malation; Kerentanan; Resistensi.</p><p> </p><p><strong><em>Abstract</em></strong></p><p><em>Dengue hemorrhagic fever in the district Bantul during the last 5 years shows Sewon district area is also included in the endemic areas and Dlingo is a village that has the lowest incidence. Even at some time in Dlingo there was an occurrence of dengue hemorrhagic fever. Prolonged use of malathion as one prevention in the Panggungharjo district may can occur in resistance with this dengue. Purpose of this study was to determine the status of malathion resistance in the Panggungharjo and Dlingo. The research in 2014 was descriptive with laboratory test. Research object is the Aedes aegypti rearing results obtained from the Panggungharjo and Dlingo Bantul and then tested in susceptibility. The results of this study are Aedes aegypti from the Panggungharjo was resistant with and Aedes aegypti from Dlingo is not resistant but still in the tolerant category. There have different levels of resistance between Panggungharjo and Dlingo Bantul Yogyakarta.</em></p><p><em>Keywords : Aedes aegypti; Malathion; Susceptibility; Resistance.</em></p>