bluuebunny/crossref_metadata_2025 huggingface dataset:
Spectra of the operator of the first difference in Sα, sα0 $s_\alpha ^0 $ , sα(c) $s_\alpha ^{(c)} $ and lp (α) (1 ≤ p < ∞) and application to matrix transformations
Authors: Farés Ali , de Malafosse Bruno
Published: May 2017

In this paper we deal with the spectrum of the operator of the first difference ∆ considered as an operator from
Rate of approximation for integrated Szasz-Mirakyan operators
Authors: Dubey Deepak Kumar , Jain V. K.
Published: May 2017

Recently Jain et al. [
Subharmonic and multiple periodic solutions for Hamiltonian systems with local partial sublinear nonlinearity
Authors: Timoumi Mohsen
Published: May 2017

The existence of subharmonic and multiple periodic solutions as well as the minimality of periods are obtained for the nonautonomous Hamiltonian systems
Semisimple and semilocal pseudo BL-algebras
Authors: Walendziak Andrzej , Wojciechowska Magdalena
Published: May 2017

The concepts of semisimple and semilocal pseudo BL-algebras are investigated. Many facts corresponding with them are considerated. Moreover, we give a negative answer to the question from [Di Nola, Georgescu and Iorgulescu (Multiplae Valued Logic 8: 715-750, 2002), Problem 1.33].
Characterization of asymptotical expansions of copulas by the use of homogeneous functions
Authors: Iwaniec Ewa
Published: May 2017

The definition, terminology and possible forms of homogeneous expansion of copulas are given. The methodology that provides homogeneous expansions with a proof of their existence is presented. Numerous examples illustrating the usage of the main theorem for valuation of the expansions are indicated.
Topologies and smooth maps on initial and final objects in the category of Frölicher spaces
Authors: Batubenge A. , Tshilombo H.
Published: May 2017

In this paper, we show that when the Frölicher smooth structure is induced on a subset or a quotient set, there are three natural topologies underlying the resulting object. We study these topologies and compare them in each case. It is known that the topology generated by strucure functions is the weakest one in which all functions and curves on the space are continuous. We show that on a subspace, it is rather the trace topology which has this property, while the three topologies are coincident on the quotient space. We construct a base for the Frölicher topology and using either a base or a subbase in the sense of A. Frölicher [
Free exponential families as kernel families
Authors: Bryc Włodzimierz
Published: May 2017

Free exponential families have been previously introduced as a special case of the
Generalizations of two-index two-variable Hermite matrix polynomials
Authors: Metwally M. S. , Mohamed M. T. , Shehata A.
Published: May 2017

In this paper, we introduce a new generalization of the Hermite matrix polynomials expansions of some relevant matrix functions appearing in the solution of differential systems. An explicit representation and an expansion of the matrix exponential in a series of these matrix polynomials is obtained. Properties of Hermite matrix polynomials such as the recurrence formula permit an efficient computations of matrix functions are established. A new expansions of the matrix exponential for a wide class of matrices in terms of Hermite matrix polynomials is proposed.
Certain class of p-valent functions associated with the wright generalized hypergeometric function
Authors: Aouf M. K. , Shamandy A. , Mostafa A. O. , Madian S. M.
Published: May 2017

Using the Wright’s generalized hypergeometric function, we introduce a new class
Properties of certain classes of analytic functions defined by Srivastava–Attiya operator
Authors: Khairnar S. M. , More Meena
Published: May 2017

In this paper we introduce the class
Singularities of pedal curves produced by singular dual curve germs in Sn
Authors: Nishimura Takashi
Published: May 2017

For an
The geometric genus, the casson invariant conjecture and splice type singularities
Authors: Okuma Tomohiro
Published: May 2017

This is a survey of some results on splice-quotient singularities which are a natural and broad generalization of quasihomogeneous surface singularities with rational homology sphere links. From its topology (i.e., the link or the resolution graph), we can write down the “leading terms” of equations of a splice-quotient singularity, and compute the geometric genus. Applying the formula for the geometric genus, we can verify the Casson invariant conjecture for splice-quotient singularities.
Strong convergence of averaged iteration for asymptotitcally non-expansive non-self mappings
Authors: Bano Nikhat , Mir Nazir Ahmad
Published: May 2017

Let
R-supercontinuous functions
Authors: Kohli J. K. , Singh D. , Aggarwal J.
Published: May 2017

A new strong variant of continuity called ‘
Nd-hypersubstitutions of many-sorted algebras
Authors: Denecke K. , Lekkoksung S.
Published: May 2017

A non-deterministic hypersubstitution maps any operation symbol of type
The set of points of discontinuity of ℐ-approximately continuous functions
Authors: Wilczyński Władysław
Published: May 2017

The paper presents the characterization of the set of points of discontinuity (with respect to the natural topology on the real line) of an
A two points Taylor’s formula for the generalised Riemann integral
Authors: Dragomir S. S. , Thompson H. B.
Published: May 2017

A two points Taylor’s formula for the generalised Riemann integral and various bounds for the remainder are established. Moreover, particular instances of interest are given.
Imprimitivity theorem for groupoid representations
Authors: Pysiak Leszek
Published: May 2017

We define and investigate the concept of the groupoid representation induced by a representation of the isotropy subgroupoid. Groupoids in question are locally compact transitive topological groupoids. We formulate and prove the imprimitivity theorem for such representations which is a generalization of the classical Mackey’s theorem known from the theory of group representations.
Semi-invariant submanifolds of Lorentzian Sasakian manifolds
Authors: Alegre Pablo
Published: May 2017

In this paper we introduce the notion of semi-invariant submanifolds of a Lorentzian almost contact manifold. We study their principal characteristics and the particular cases in which the manifold is a Lorentzian Sasakian manifold or a Lorentzian Sasakian space form.
Upper and lower almost cl-supercontinuous multifunctions
Authors: Kohli J. K. , Arya C. P.
Published: May 2017

The notion of almost cl-supercontinuity (≡ almost clopen continuity) of functions (Acta Math. Hungar. 107 (2005), 193–206; Applied Gen. Topology 10 (1) (2009), 1–12) is extended to the realm of multifunctions. Basic properties of upper (lower) almost cl-supercontinuous multifunctions are studied and their place in the hierarchy of strong variants of continuity of multifunctions is discussed. Examples are included to reflect upon the distinctiveness of upper (lower) almost cl-supercontinuity of multifunctions from that of other strong variants of continuity of multifunctions which already exist in the literature.
Upper bounds on the sizes of finitely generated algebras
Authors: Berman Joel
Published: May 2017

We present an upper bound for the cardinality of any n-generated algebra in a locally finite variety 𝒱 of algebras. This upper bound depends only on some fundamental numerical invariants of the n-generated subdirectly irreducible algebras in 𝒱. A theorem characterizing those varieties that contain algebras whose cardinalities achieve the upper bound is proved. Several explicit methods for computing the exact values of these invariants are described. The final section contains detailed concrete examples illustrating applications of the characterization theorem and of the various methods for computing the upper bound.
Maximal and minimal C-monoids
Authors: Vargas Edith Mireya
Published: May 2017

In this paper a restricted version of the Galois connection between polymorphisms and invariants, called Pol − CInv, is studied, where the invariant relations are restricted to so-called clausal relations. The lattice of all clones arising from this Galois connection, so-called C-clones, is investigated up to equality of their unary parts, denominated C-monoids. All atoms and co-atoms in the lattice of all C-monoids are characterized.
The uncountable cofinality of the automorphism group of the countable universal distributive lattice
Authors: Droste M. , Truss J. K.
Published: May 2017

We show that the automorphism group of the countable universal distributive lattice has strong uncountable cofinality, and we adapt the method to deduce the strong uncountable cofinality of the automorphism group of the countable universal generalized boolean algebra.
Embedding modes into semimodules, Part I
Authors: Pilitowska Agata , Romanowska Anna B.
Published: May 2017

By recent results of M. Stronkowski, it is known that not all modes embed as subreducts into semimodules over commutative unital semirings. Related to this problem is the problem of constructing a (commutative unital) semiring defining the variety of semimodules whose idempotent subreducts lie in a given variety of modes. We provide a general construction of such semirings, along with basic examples and some general properties. The second part of the paper will deal with applications of the general construction to some selected varieties of modes, and will provide a description of semirings determining varieties of semimodules having algebras from these varieties as idempotent subreducts.
Distributivity versus associativity in the homology theory of algebraic structures
Authors: Przytycki Józef H.
Published: May 2017

While homology theory of associative structures, such as groups and rings, has been extensively studied in the past beginning with the work of Hopf, Eilenberg, and Hochschild, homology of non-associative distributive structures, such as quandles, were neglected until recently. Distributive structures have been studied for a long time. In 1880, C.S. Peirce emphasized the importance of (right) self-distributivity in algebraic structures. However, homology for these universal algebras was introduced only sixteen years ago by Fenn, Rourke, and Sanderson. We develop this theory in the historical context and propose a general framework to study homology of distributive structures. We illustrate the theory by computing some examples of 1-term and 2-term homology, and then discussing 4-term homology for Boolean algebras. We outline potential relations to Khovanov homology, via the Yang-Baxter operator.
Theory and application of the generalized difference operator of the nth kind (Part I)
Authors: Susai Manuel M. Maria , Xavier G. Britto Antony , Chandrasekar V. , Pugalarasu R.
Published: May 2017

In this paper, the authors extend the theory of the generalized difference operator Δℓ to the generalized difference operator of the nth kind denoted by Δ
L
, where L = {ℓ1, ℓ2, . . . , ℓ
n
} of positive reals ℓ1, ℓ2, . . . , ℓ
n
and obtain some intresting results on the relation between the generalized polynomial factorial of the first kind, nth kind and algebraic polynomials. Also formulae for the sum of general partial sums of products of several powers of consecutive terms of an arithmetic progression in number theory are derived.
B-closed spaces
Authors: Sarsak Mohammad S.
Published: May 2017

We introduce and study B-closed spaces. This class of spaces is a subclass of both S-closed spaces and p-closed spaces.
A generalization of Bernstein-Doetsch Theorem
Authors: Mureńko Anna
Published: May 2017

Let V be an open convex subset of a nontrivial real normed space X. In the paper we give a partial generalization of Bernstein-Doetsch Theorem. We prove that if there exist a base ℬ of X and a point x ∈ V such that a midconvex function f : X → ℝ is locally bounded above on b-ray at x for each b ∈ ℬ, then f is convex. Moreover, we show that under the above assumption, f is also continuous in case X = ℝ
N
, but not in general.
On subordination for higher-order derivatives of multivalent functions associated with the generalized Srivastava-Attiya operator
Authors: Elrifai E. A. , Darwish H. E. , Ahmed A. R.
Published: May 2017

In this paper, we study and use differential subordination methods to obtain several interesting subordination results and best dominants for higher-order derivatives of multivalent functions defined with Srivastava-Attiya operator.
Deformed Fock spaces, Hecke operators and monotone Fock space of Muraki
Authors: Bożejko Marek
Published: May 2017

The main purpose of this paper is to extend our previous construction of T-Fock spaces from a given Yang–Baxter operator satisfying the inequalities −1 ≤ T ≤ 1 to the constructions of T-symmetric Fock spaces related to the class of Yang–Baxter–Hecke operators meeting a weaker condition that T ≥ −1. The new representation of the monotone Fock space of N. Muraki will be given. The main idea of this paper is the new class of generalized Gaussian random variables acting on suitable T-symmetric Fock spaces. Relations with the row and column operator space will be also given.
Orlicz-space Hardy and Landau–Kolmogorov inequalities for Gaussian measures
Authors: Oleszkiewicz Krzysztof , Pietruska-Pałuba Katarzyna
Published: May 2017

We prove Orlicz-space versions of Hardy and Landau–Kolmogorov inequalities for Gaussian measures on ℝ
n
.
Coincidence and common fixed point theorems for hybrid contractions in symmetric spaces
Authors: Vijaywar Yogesh Kumar , Bawa N. P. S. , Shrivastava Praveen Kumar
Published: May 2017

Using compatibility of type (N) and (E-A) property of hybrid pair of mappings we obtain some new coincidence and common fixed point theorems under strict contractive conditions in symmetric (semi-metric) space.
Idempotent tree languages
Authors: Denecke K. , Sarasit N. , Wismath S. L.
Published: May 2017

A tree language of a fixed type τ is any set of terms of type τ. We consider here a binary operation +
n
on the set Wτ
(Xn
) of all n-ary terms of type τ, which results in semigroup (Wτ
(Xn
), +
n
). We characterize languages which are idempotent with respect to this binary operation, and look at varieties of tree languages containing idempotent languages. We also compare properties of semigroup homomorphisms from (𝒫(Wτ
(Xn
));+
n
) to (𝒫(Wτ
(Xm
));+
m
) with properties of homomorphisms between the corresponding absolutely free algebras ℱ
τ
(Xn
) and ℱ
τ
(Xm
).
On Cesàro sequence space defined by a modulus function
Authors: Bala Indu
Published: May 2017

The object of this paper is to introduce the sequence space ces(f, p) using a modulus function f. Various algebraic and topological properties of this space, and certain inclusion relations have been discussed which generalize several known results of Shiue [10], Sanhan and Suantai [9], and Leibowitz [2].
Non linear differential polynomials sharing fixed points with finite weights
Authors: Banerjee Abhijit , Sahoo Pulak
Published: May 2017

We employ the notion of weighted sharing to investigate the uniqueness of meromorphic functions when two nonlinear differential polynomials share fixed points. The results of the paper improve and generalize the recent results due to Xu–Lu–Yi [10].
Strict contractive conditions and common fixed point theorems with application
Authors: Pant Vyomesh
Published: May 2017

The aim of the present paper is to obtain common fixed point theorems under a strict contractive condition by assuming minimal commutativity conditions. Our theorems extend the results due to Pant and Pant [4]. In the setting of our results, we also provide pair of mappings which ensures the existence of a common fixed point; however, both the mappings are discontinuous at the common fixed point. We, thus, provide one more answer to the problem of Rhoades [10]. In the last section, we apply our results to solve an eigenvalue problem.
On some properties of generalized open sets in generalized topological spaces
Authors: Sarsak Mohammad S.
Published: May 2017

In [8], Császár introduced some generalized open sets in generalized topological spaces, namely, μ-semi-open, μ-preopen, μ-β-open, and μ-α-open. The primary purpose of this paper is to study some new properties and characterizations of these concepts as we also introduce and study a new generalized open set in generalized topological spaces, namely, μ-b-open. We also investigate some relationships between these concepts.
Fixed point iterations of three asymptotically pseudocontractive mappings
Authors: Rafiq Arif
Published: May 2017

In this paper, we establish the strong convergence for a modified three-step iterative scheme with errors associated with three mappings in real Banach spaces. Moreover, our technique of proofs is of independent interest. Remark at the end simplifies many known results.
Product of weighted Hankel and weighted Toeplitz operators
Authors: Datt Gopal , Porwal Deepak Kumar
Published: May 2017

In this paper, we discuss some properties of the weighted Hankel operator

H

ψ
β

$H_\psi ^\beta $

and describe the conditions on which the weighted Hankel operator

H

ψ
β

$H_\psi ^\beta $

and weighted Toeplitz operator

T

ϕ
β

$T_\phi ^\beta $

, with ϕ, ψ ∈ L
∞(β) on the space H
2(β), β = {βn
}
n∈Ƶ
being a sequence of positive numbers with β
0 = 1, commute. It is also proved that if a non-zero weighted Hankel operator

H

ψ
β

$H_\psi ^\beta $

commutes with

T

ϕ
β

$T_\phi ^\beta $

, which is not a multiple of the identity, then

H

ψ
β

=
μ

T

ϕ
β

$H_\psi ^\beta = \mu T_\phi ^\beta $

, for some μ ∈ ℂ.
On [γ, γ′]-preopen sets
Authors: Carpintero C. , Rajesh N. , Rosas E.
Published: May 2017

In this paper, we introduce and study the concept of [γ, γ′]-preopen sets in topological space.
Mean-value theorems and some symmetric means
Authors: Matkowski Janusz
Published: May 2017

Some variants of the Lagrange and Cauchy mean-value theorems lead to the conclusion that means, in general, are not symmetric. They are symmetric iff they coincide (respectively) with the Lagrange and Cauchy means. Under some regularity assumptions, we determine the form of all the relevant symmetric means.
The alpha-version of the Stewart’s theorem
Authors: Gelişgen Özcan , Kaya Rüstem
Published: May 2017

G. Chen [
Some new generalizations of Maroni inequality on time scales
Authors: Yin Li , Zhao Changjian
Published: May 2017

The aim of present paper is to establish some new integral inequalities on time scales involving several functions and their derivatives which in the special cases yield the well known Maroni inequality and some of its generalizations.
On some properties of summability methods with variable order
Authors: Tetunashvili Shakro
Published: May 2017

Methods of summability with variable order are considered.
A connection of series convergence with series summability is established.
A non-strengthening in a certain sense of some results is proved.
Zur Nachhaltigkeit Neuer Medien im Fremdsprachenunterricht
Authors: Schütze Ulf
Published: May 2017

In diesem Artikel wird der Frage nachgegangen, inwieweit Neue Medien sinnvoll und über einen längeren Zeitraum im Fremdsprachenunterricht eingesetzt werden können. Dabei wird Nachhaltigkeit als Faktor eingeführt - ein Konzept, das ursprünglich im Zusammenhang mit dem Umweltschutz entwickelt wurde, inzwischen aber in vielen Bereichen des Lebens Anwendung findet. Zunächst wird der Begriff der Nachhaltigkeit im Zusammenhang mit dem Einsatz Neuer Medien im Fremdsprachenunterricht im Zusammenhang vorhandener Studien diskutiert. Anschließend werden anhand des Unterrichtsbeispiels ›Der Konjunktiv‹ mehrere Möglichkeiten aufgezeigt, Neue Medien im Sprachunterricht einzusetzen. Diese Beispiele werden auf den Faktor der Nachhaltigkeit hin analysiert. Schließlich werden zwei Beispiele vorgestellt, in denen mit Hilfe von Neuen Medien ›Der Konjunktiv‹ im Fremdsprachenunterricht im Sinne der Nachhaltigkeit vermittelt werden kann.
Ich trinke gerne *die Tee: Der Nullartikel aus der Perspektive französischsprachiger Deutschlerner unter besonderer Berücksichtigung generischer Ausdrücke
Authors: Stollhans Sascha
Published: May 2017

Ausgehend von Überlegungen zu Kontrastivität und Transfer in DaF und einem kurzen Vergleich des deutschen und französischen Artikelsystems, werden in diesem Beitrag bestimmte generische Ausdrücke untersucht, bei denen im Deutschen häufig der Nullartikel und im Französischen der definite Artikel präferiert wird. Daraus abgeleitete Hypothesen bzgl. möglicherweise transferanfälliger Phänomene für frankophone Deutschlerner sowie Anregungen zur Vermittlung dieser Strukturen im Rahmen einer formfokussierten Steuerung bilden den Schluss dieses Beitrags.
Mit Scaffolding zur Fachsprache Film im DaF-Unterricht
Authors: Hahn Natalia , Schöler Marianne
Published: May 2017

Der Filmeinsatz im DaF-Unterricht hat eine lange Tradition. Jedoch werfen der Erwerb und die Vermittlung der Fachsprache Film, die für die Beschäftigung mit Filmen unentbehrlich ist, immer noch viele Fragen auf. Dieser Artikel bietet einen Einblick in die Vermittlung fachsprachlicher Kompetenzen zum Thema Film und Filmanalyse auf der Basis des Modells »Scaffolding«. Ausgehend von der alltagssprachlichen Kompetenz, Filme beschreiben und analysieren zu können, lernen die DaF-Schülerinnen und Schüler der Sekundarstufe die fachsprachlichen Beschreibungsmittel für das vielgestaltige Medium Film kennen und anwenden. Dargestellt werden dabei vier Bereiche des »Scaffolding«: die Bedarfsanalyse, die Lernstandsanalyse, die Unterrichtsplanung und die Unterrichtsinteraktion. Das Modell geht über das einzelne fachsprachliche Thema Film und über die ausgewählte Zielgruppe hinaus und lässt sich leicht übertragen sowohl auf andere Zielgruppen als auch auf die Vermittlung weiterer Fachsprachen im DaF-Unterricht.
Unpersönliches Schreiben in der Wissenschaft. Kompetenzunterschiede im interkulturellen Vergleich
Authors: Hennig Mathilde , Niemann Robert
Published: May 2017

Der vorliegende zweite Teil eines zweiteiligen Aufsatzes beschäftigt sich mit wissenschaftlicher Schreibkompetenz vor dem Hintergrund eines interkulturellen Vergleichs. Aus theoretischer Sicht wird versucht, die Konsequenzen der Domänenspezifik sowie des sozialen Charakters des wissenschaftlichen Schreibens für den Erwerb von Kompetenzen im Umgang mit der eigenen Person aufzuzeigen. Hierfür werden aus praktischer Sicht, anknüpfend an die Überlegungen aus dem ersten Teil, Ergebnisse einer kleinen Untersuchung zu Unterschieden zwischen Experten und Novizen sowie zwischen L1- und L2-Studenten im Gebrauch von einschlägigen Deagentivierungsmitteln vorgestellt und diskutiert.
Dekonstruktive Literaturdidaktik am Beispiel der deutschen Abteilung der Universität Athen. Zur Diskussion um eine praxisbezogene Theoriebildung
Authors: Blioumi Aglaia
Published: May 2017

Im vorliegenden Beitrag wird gezeigt, wie im Unterricht poststrukturalistische und hermeneutische Vorgehensweisen miteinander verknüpft werden, um anhand des Romans Reisende auf einem Bein von Herta Müller Studenten der Universität Athen mit literaturdidaktischen Analyseverfahren vertraut zu machen. Ziel ist es, einen Spannungsbogen zwischen Fachdidaktik, DaF und Auslandsgermanistik herzustellen mit dem Ziel, angehende Deutschlehrer für den Literaturunterricht in DaF vorzubereiten. Die These ist dabei, dass handlungs- und produktionsorientierte Verfahren ein gemeinsamer Knotenpunkt zwischen Fachdidaktik und DaF sind und ihre Anwendung im Rahmen der Auslandsgermanistik durchaus ausführbar ist.
DaF-Kompetenzzentren: Chancen und Perspektiven der Deutschlehrerausbildung in Südamerika. Ein Bestands- und Entwicklungsbericht
Authors: Roche Jörg , Suñer Ferran
Published: May 2017

Anhand der Region südliches Lateinamerika stellt der Beitrag die Bedarfe, die Situationen und die Entwicklungspotenziale von Lehrerausbildungs- und Weiterbildungsprogrammen exemplarisch in einem strategisch an Bedeutung zunehmenden Teil der Welt dar, der traditionell von deutschsprachiger Migration geprägt war, von dieser jedoch für die Rekrutierung von deutschsprachigen Lehrkräften nur noch unzureichend profitieren kann. Der vorliegende Beitrag stellt die fachlichen Hauptziele sowie die geplanten Instrumente der Kooperationen vor und beschreibt den Mehrwert und die strategische Bedeutung der Kooperationen für die beteiligten Partner vor dem Hintergrund ihrer politischen, curricularen, finanziellen und personellen Möglichkeiten.
Komunikado: Interkulturelle Kooperationsprojekte im Lehramts- und im DaF-Studium an der Philipps-Universität Marburg
Authors: Schmidt-Bernhardt Angela , Storozenko Victoria
Published: May 2017

In unserem Beitrag erläutern wir ein Beispiel interkulturellen Lernens in der Hochschullehre. Wir beziehen uns auf ein Kooperationsprojekt, das über mehrere Semester - WiSe 12/13, SoSe 13, WiSe 13/14 c - mit DaF- und Lehramtsstudierenden der Philipps-Universität Marburg und Lehrenden sowie Studierenden ausländischer Universitäten stattfand. Insbesondere widmen wir uns der Kooperation mit der größten staatlichen Hochschule Costa Ricas »Universidad de Costa Rica (UCR)«; darüber hinaus stellen wir weitere internationale Projekte beispielhaft vor. Ziel des Kooperationsprojekts ist die Förderung der interkulturellen Kompetenz, der Kooperationsfähigkeit, der sozialen und der Selbstkompetenz. Wir erläutern in unserem Beitrag die Entstehung der Kooperationen, Form und Inhalte der Zusammenarbeit unserer Studierenden, gehen auf unsere Arbeitsweise (kooperatives Lernen und Blended Learning) ein, skizzieren Problemlösungen im Arbeitsverlauf und stellen ausgewählte Ergebnisse der Projektarbeit der Studierenden vor. Den Abschluss bildet eine kurze Reflexion.
Englischer Wortschatz als Grundlage für den Erwerb des deutschen Wortschatzes
Authors: Chen Ying-Hui
Published: May 2017

Deutsch ist eine typische Tertiärsprache in Taiwan. Jeder taiwanische Deutschlerner hat vor Deutsch bereits Englisch gelernt. Dies ist zwar allen Deutschlehrkräften bekannt, jedoch fehlt in der Sprachlehrpraxis die konkrete Vorstellung darüber, welchen englischen Wortschatz die taiwanischen Deutsch-Anfänger im Englischuntericht bereits erworben haben. Dies führt zu einem minimalen Einsatz des vorhandenen Englischwissens im Deutschunterricht. Um den englischen Wortschatz taiwanischer Deutschlerner zu ermitteln, wurden in dieser Studie empirische Daten über englische Vokabeln gesammelt. 72 absolute Anfänger des Deutschen aus drei taiwanischen Universitäten füllten einen Fragebogen aus und nahmen an einem Vokabeltest teil, in dem sie die Bedeutung deutscher Wörter und im Deutschen vorkommender Fremdwörter auf Grundlage ihrer Englischkenntnisse erschließen sollten. Die hierfür zugrunde liegenden englischen Vokabeln stammten hauptsächlich aus den vom Erziehungsministerium Taiwans festgelegten 2000 Wörtern für das Fach Englisch in Grund- und Mittelschulen. Insgesamt wurden 514 Wörter ausgewählt, von denen die Studierenden durchschnittlich 261,56 Wörter richtig erkannten. Die Ergebnisse dieser Untersuchung sollen Deutschlehrenden und -lernenden eine konkrete Vorstellung über die Möglichkeiten des Transfers vermitteln. Außerdem erhalten Lehrwerkentwickler ein konkretes Bild darüber, inwieweit die Behandlung von Anglizismen in Lehrwerken für taiwanische Deutschlerner hilfreich sein könnte.
»Einer Frage nachgehen«, »Daten analysieren« und »Ergebnisse zusammenfassen«. Vorüberlegungen zu einem Online-Wörterbuch zum allgemein-wissenschaftlichen Wortschatz des Deutschen
Authors: Sieradz Magdalena
Published: May 2017

Im vorliegenden Beitrag wird die Konzeption eines elektronischen Wörterbuchs zum lexikalischen Bestand der deutschen Wissenschaftssprache erarbeitet, welches sowohl auf semasiologischer als auch auf onomasiologischer Organisation des Datenbestandes basieren und die Spezifik der wissenschaftssprachlichen Lexik erfassen soll. Als Quelle für die Erarbeitung erster Vorschläge wurde eine Frequenzliste von allgemein-wissenschaftlichen Lexemen herangezogen, die auf Grundlage eines Korpus mit akademischen Texten aus verschiedenen Fachrichtungen erstellt wurde. Der Schwerpunkt des Online- Wörterbuchs soll auf der Beschreibung von Bedeutungen und Verwendungsweisen der ermittelten Stichwörter liegen und den DaF-Lernenden eine Hilfestellung sowohl beim Rezipieren als auch beim Verfassen akademischer Texte bieten. Es wird der Versuch unternommen, einen Vorschlag für die Konzeption eines korpusbasierten elektronischen Wörterbuchs zu erarbeiten, welches DaF-Lernenden ein Repertoire von in den wissenschaftlichen Texten aus verschiedenen Disziplinen häufig vorkommenden Wörtern sowie üblichen Strukturen und Wendungen zur Verfügung stellen würde.
Kulturelles Gedächtnis und kulturelles Lernen im DaF-Unterricht. Einsatz des Brandenburger Tors im Deutschunterricht in Burkina Faso
Authors: Bationo Jean Claude
Published: May 2017

Das Lehren und Lernen von Fremdsprachen im Zeitalter der Globalisierung erfordert in immer stärkerem Maße auch kulturelle Kompetenzen. Dennoch ist das kulturelle Lernen defizitär im burkinischen Deutschunterricht. Obwohl das Regionallehrwerk IHR und WIR plus zwar über zahlreiche kulturelle Inhalte über Deutschland verfügt, kann sich das kulturelle Lernen nicht nur durch digitale Medien und Lehrmaterialien verwirklichen. Erinnerungsorte sind weitere kulturelle Aspekte, deren Didaktisierung im DaF-Unterricht den Lernenden hilft, die deutsche Kultur kennenzulernen.
»Um uns zu […] verwirren«: Eine empirische Untersuchung zum kulturbezogenen Lernen
Authors: Agiba Sara
Published: May 2017

Der Beitrag widmet sich der Fragestellung, inwieweit Irritationsmomente im Rahmen kulturbezogener Lernprozesse bei Lernenden des Deutschen als Fremd- bzw. Zweitsprache in der Auseinandersetzung mit einem Diskurs (im weiteren Sinne) stattfinden. Dafür wurden zunächst konträre Materialien zu den kategorialen Mustern »Mann- Frau« konzipiert, die dann im Rahmen eines zweitägigen Workshops mit ägyptischen DaF-Lernern in Kairo eingesetzt wurden. Im Zentrum der Untersuchung standen die Rekonstruktions- und Sinnzuschreibungsprozesse der Lernenden zum Deutungsmuster »Frau-Mann«, wobei die kulturbezogenen Lernprozesse der Teilnehmenden bei der Auseinandersetzung mit den Materialien mittels Audio- und Videoaufnahmegeräten aufgezeichnet wurden. Die erhobenen Daten wurden anschließend einer zweischrittigen explorativ-interpretativen Analyse unterzogen. Diese Arbeit soll einen Beitrag zur Konkretisierung und Präzisierung des Begriffs kulturbezogenen Lernens leisten und somit die empirisch fundierte Theoriebildung im Bereich Kulturstudien des Faches Deutsch als Fremdsprache vorantreiben.
Zwischen Text- und Adressatenorientierung. Kriterien für die Exemplumwahl in der interkulturellen Literaturvermittlung
Authors: Schuster Liudmyla
Published: May 2017

Der vorliegende Beitrag widmet sich der Auswahl literarischer Texte für die interkulturelle Vermittlungspraxis. Bei der Herausarbeitung der den Auswahlkriterien zugrunde liegenden vermittlungsrelevanten Aspekte auf verschiedenen textuellen Ebenen wird das Ziel verfolgt, sowohl die besondere hermeneutische Position des fremdkulturellen Lesers als auch den ästhetischen Wert des Textes gleichermaßen zu berücksichtigen. Im Anschluss an die theoretischen Überlegungen wird mithilfe der erarbeiteten Kriterien die Analyse der Kurzgeschichte »Streuselschnecke« von J. Franck hinsichtlich derer Potential zur Initiierung des kulturellen Austausches im Rahmen eines Lesergesprächs durchgeführt.
Isolated elliptic curves and the MOV attack
Authors: Scholl Travis
Published: May 2017

We present a variation on the CM method that produces elliptic curves over prime fields with nearly prime order that do not admit many efficiently computable isogenies. Assuming the Bateman–Horn conjecture, we prove that elliptic curves produced this way almost always have a large embedding degree, and thus are resistant to the MOV attack on the ECDLP.
Influence of particle size of isotactic polypropylene (iPP) on barrier property against agglomeration of homogenized microcrystalline cellulose (HMCC) in iPP/HMCC composites
Authors: Xu Ning , Ding Enyong , Xue Feng
Published: May 2017

Isotactic polypropylene (iPP) powders were treated by a colloid mill for different times to obtain a series of particle sizes ranging from 682 μm to 89 μm. The relative crystallinity degree index (Xc, %) calculated by X-ray diffraction, and the initial degradation temperature measured by thermogravimetry, were all reduced after the milling process, which revealed that the structure of iPP molecular chains was destroyed during the powerful shearing and friction action. Furthermore, the increasing melt flow rate (MFR) index indicated that the molecular weight of iPP had reduced during the mechanical treatment. Scanning electron micrographs showed the inevitable agglomeration of homogenized microcrystalline cellulose (HMCC) fibers after being dried directly without iPP powders. However, the addition of achieved superfine iPP powders presented a good barrier property against the agglomeration phenomenon and consequent improvement in mechanical performance of the iPP/HMCC composites.
Monolithic substrate support catalyst design considerations for steam methane reforming operation
Authors: Baharudin Luqmanulhakim , Watson Matthew James
Published: May 2017

This paper reviews the research undertaken to study the design criteria that address the monolithic support structure requirements in steam reforming operation for the effective mass transfer of process gases to the active sites and effective conductive heat transfer through tube wall to the active catalytic areas, as well as low pressure drop operation. Design considerations include selection of substrate materials that possess good mechanical strength to withstand the severe reaction conditions and prevent catalyst crushing that would lead to carbon formation and catalyst deactivation, and excessive heating of the tube that results in hot spots which is fatal to tube lifetime. The support’s mechanical properties are listed for the purpose of providing guidelines on verifying the structure durability. The practical aspect of packaging and stacking the monolith structures in the reformer tube for ease of loading and discharge is discussed to understand its readiness in industrial application.
Skeletal muscle metabolism during prolonged exercise in Pompe disease
Authors: Preisler Nicolai , Laforêt Pascal , Madsen Karen Lindhardt , Husu Edith , Vissing Christoffer Rasmus , Hedermann Gitte , Galbo Henrik , Lindberg Christopher , Vissing John
Published: May 2017

Objective

Pompe disease (glycogenosis type II) is caused by lysosomal alpha-glucosidase deficiency, which leads to a block in intra-lysosomal glycogen breakdown. In spite of enzyme replacement therapy, Pompe disease continues to be a progressive metabolic myopathy. Considering the health benefits of exercise, it is important in Pompe disease to acquire more information about muscle substrate use during exercise.

Methods

Seven adults with Pompe disease were matched to a healthy control group (1:1). We determined (1) peak oxidative capacity (VO2peak) and (2) carbohydrate and fatty acid metabolism during submaximal exercise (33 W) for 1 h, using cycle-ergometer exercise, indirect calorimetry and stable isotopes.

Results

In the patients, VO2peak was less than half of average control values; mean difference −1659 mL/min (CI: −2450 to −867, P = 0.001). However, the respiratory exchange ratio increased to >1.0 and lactate levels rose 5-fold in the patients, indicating significant glycolytic flux. In line with this, during submaximal exercise, the rates of oxidation (ROX) of carbohydrates and palmitate were similar between patients and controls (mean difference 0.226 g/min (CI: 0.611 to −0.078, P = 0.318) and mean difference 0.016 µmol/kg/min (CI: 1.287 to −1.255, P = 0.710), respectively).

Conclusion

Reflecting muscle weakness and wasting, Pompe disease is associated with markedly reduced maximal exercise capacity. However, glycogenolysis is not impaired in exercise. Unlike in other metabolic myopathies, skeletal muscle substrate use during exercise is normal in Pompe disease rendering exercise less complicated for e.g. medical or recreational purposes.
The phenotype of SDHB germline mutation carriers: a nationwide study
Authors: Niemeijer Nicolasine D , Rijken Johannes A , Eijkelenkamp Karin , van der Horst-Schrivers Anouk N A , Kerstens Michiel N , Tops Carli M J , van Berkel Anouk , Timmers Henri J L M , Kunst Henricus P M , Leemans C René , Bisschop Peter H , Dreijerink Koen M A , van Dooren Marieke F , Bayley Jean-Pierre , Pereira Alberto M , Jansen Jeroen C , Hes Frederik J , Hensen Erik F , Corssmit Eleonora P M
Published: May 2017

Objective

Succinate dehydrogenase B subunit (SDHB) gene germline mutations predispose to pheochromocytomas, sympathetic paragangliomas, head and neck paragangliomas and non-paraganglionic tumors (e.g. renal cell carcinoma, gastrointestinal stromal tumor and pituitary neoplasia). The aim of this study was to determine phenotypical characteristics of a large Dutch cohort of SDHB germline mutation carriers and assess differences in clinical phenotypes related to specific SDHB mutations.

Design

Retrospective descriptive study.

Methods

Retrospective descriptive study in seven academic centers.

Results

We included 194 SDHB mutation carriers consisting 65 (33.5%) index patients and 129 (66.5%) relatives. Mean age was 44.8 ± 16.0 years. Median duration of follow-up was 2.6 years (range: 0–36). Sixty persons (30.9%) carried the exon 3 deletion and 46 (23.7%) the c.423 + 1G > A mutation. Fifty-four mutation carriers (27.8%) had one or multiple head and neck paragangliomas, 4 (2.1%) had a pheochromocytoma and 26 (13.4%) had one or more sympathetic paragangliomas. Fifteen patients (7.7%) developed metastatic paraganglioma and 17 (8.8%) developed non-paraganglionic tumors. At study close, there were 111 (57.2%) unaffected mutation carriers. Statistical analyses showed no significant differences in the number and location of head and neck paragangliomas, sympathetic paragangliomas or pheochromocytomas, nor in the occurrence of metastatic disease or other tumors between carriers of the two founder SDHB mutations (exon 3 deletion vs c.423 + 1G > A).

Conclusions

In this nationwide study of disease-affected and unaffected SDHB mutation carriers, we observed a lower rate of metastatic disease and a relatively high number of head and neck paragangliomas compared with previously reported referral-based cohorts.
Frecuencia de Neoplasias en Caninos en Quito, Ecuador
Authors: Vinueza R.L. , Cabrera F. , Donoso L. , Pérez J. , Díaz R.
Published: May 2017

En Quito, Ecuador, no se dispone de información estadística sobre la prevalencia de neoplasias ni su riesgo asociado a edad, sexo y raza de los caninos. En el presente estudio, a partir de 13 573 historias clínicas recabadas entre 2011 y 2014 se identificaron los animales que fueron diagnosticados mediante citología e histopatología como positivos a algún tipo de neoplasia. La prevalencia de tumoraciones en la población fue de 4.94%, siendo más frecuente en tejidos blandos (39.3%), piel y anexos (24.4%) y en hembras, en la glándula mamaria (14.3%). El riesgo relativo de desarrollar tumores fue cuatro veces mayor en animales de seis o más años de edad; asimismo, los machos son dos veces más predisponentes que las hembras a presentar tumoraciones en piel y anexos. Los animales de razas puras y mayores de cuatro años tendrían hasta 70% mayor probabilidad de desarrollar tumores que animales mestizos de edad similar.
A táplálásterápia hatékonyságának vizsgálata gyulladásos bélbetegségben szenvedők gondozása során
Authors: Molnár Andrea , Csontos Ágnes Anna , Dakó Sarolta , Hencz Rita , Anton Dániel Áron , Pálfi Erzsébet , Miheller Pál
Published: May 2017

Abstract:

Introduction: Inflammatory bowel diseases can cause malnutrition (due to inflammatory cytokine production, catabolic states after surgery, restricted diet), which is difficult to treat by nutritional therapy. Aim: Investigating the efficacy of nutrition therapy. Method: Combined malnutrition risk screening (questionnaires and body composition analysis), at the beginning of the research and after a 1 year period. Results: 205 patients were screened, 82 were malnourished. A total of 44 received nutritional intervention for 1 year, for 45% dietary management was satisfactory, 50% needed oral nutritional supplements and 5% received home parenteral nutrition. These interventions reduced the number of patients considered by both measuring methods in high risk from 31 to 21, increased the body weight and fat-free mass in 8 and 9 cases significantly (i.e., with more than 10%), and improved the indices as well (ΔBMI: +1.3 kg/m2, p = 0.035 s., ΔFFMI: +0.5 kg/m2, p = 0.296 n.s.). The main limitations of our research are the relatively low number of cases and the mono-centric involvement. Conclusions: We recommend combined malnutrition risk screening for all patients with inflammatory bowel disease due to the high risk of malnutrition, and follow-up of the malnourished patients to monitor the efficacy of their nutrition therapy. Orv Hetil. 2017; 158(19): 731–739.
Gyermekkori traumatizáció, disszociáció és szándékos fizikai önsértő viselkedés borderline személyiségzavarban
Authors: Merza Katalin , Harmatta János , Papp Gábor , Kuritárné Szabó Ildikó
Published: May 2017

Abstract:

Introduction: Childhood traumatization plays a significant role in the etiology of borderline personality disorder. Studies found a significant association between childhood traumatization, dissociation, and nonsuicidal self-injurious behavior. Aim: The aim of our study was to assess dissociation and nonsuicidal self-injury among borderline inpatients and to reveal the association between childhood traumatization, dissociation, and self-injurious behavior. Method: The sample consisted of 80 borderline inpatients and 73 depressed control patients. Childhood traumatization, dissociation and self-injurious behavior were assessed by questionnaires. Results: Borderline patients reported severe and multiplex childhood traumatization. Cumulative trauma score and sexual abuse were the strongest predictors of dissociation. Furthermore, we have found that cumulative trauma score and dissociation were highly predictive of self-injurious behavior. Conclusion: Our results suggest that self-injurious behavior and dissociation in borderline patients can be regarded as indicators of childhood traumatization. Orv Hetil. 2017; 158(19): 740–747.
The Evolving Treatment Landscape of Advanced Renal Cell Carcinoma in Patients Progressing after VEGF Inhibition
Authors: Barata Pedro C. , Ornstein Moshe C. , Garcia Jorge A.
Published: May 2017

Despite significant changes in the therapeutic landscape of renal cell carcinoma, the majority of patients with metastatic disease eventually progress after first-line treatment with vascular endothelial growth factor receptors (VEGFR) tyrosine kinase inhibitor (TKI) therapy. Understanding existing data on subsequent therapies is crucial to define an optimal treatment sequence following first-line failure. This review examines the data supporting currently approved agents in this setting and provides a framework for decision-making regarding treatment sequencing beyond first-line therapy with VEGFR TKIs.
Social Media use within medical education: A systematic review to develop a pilot questionnaire on how social media can be best used at BSMS
Authors: Whyte William , Hennessy Catherine
Published: May 2017

This article was migrated. The article was marked as recommended. Background: Since the early 2000s social media has become a major part of our daily lives, and over the past decade it has found its way into the medical profession. Despite its ubiquity, only 5 systematic reviews exist on the subject of social medial use within medical education. The reviews conclude that there are positive correlations linked to social media use however the studies are restricted by the same limitations: a lack of quantitative data and the fact that social media research fast becomes outdated. This review will therefore examine the latest studies in order to identify which questions remain to be answered and what areas need further development in order for social media to become a credible resource within medical education. The information gained from this process will be amalgamated to create a valid questionnaire which will produce quantitative data. Methods: A systematic review of Pubmed, Cochrane, PsychINFO, ERIC & Scopus was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The search was from 1st January 2014 to the 12th January 2017 and included keywords linked with social media and medical education. 27 papers were identified: 12 qualitative and 15 quantitative. From this data a questionnaire was drafted and put to a focus group in order for it to be validated. Results: Six major themes were identified and analysed: community & interactivity, communication & feedback, learning theories, social media vs traditional didactic lectures, role of faculty and professionalism. Quantitative data was limited but highlighted the efficiency of social media use especially when Facebook and Twitter were used. After the analysis a validated questionnaire was produced. Conclusion: Social media can be a useful tool within the medical curriculum if implemented correctly. The final questionnaire can be used to generate quantitative data on the following questions: which platforms are most effective and for what purposes? How beneficial is social media to teaching? and What do students understand the benefits/disadvantages of academic social media platforms to be?
Reliability and construct validity of the Online Cognition Scale in the Portuguese (Brazil) version (OCS-BR)
Authors: Silva Hugo Rafael de Souza e , Areco Kelsy Catherina Nema , Bandiera-Paiva Paulo , Galvão Pauliana Valéria Machado , Garcia Analia Nusya de Medeiros , Silveira Dartiu Xavier da
Published: May 2017

ABSTRACT Objective To evaluate construct validity and reliability of the Portuguese (Brazil) version of Online Cognition Scale (OCS-BR). Methods Portuguese (Brazil) versions of Online Cognition Scale (OCS), of Internet Addiction Test (IAT) and socio demographic questionnaire was applied to a sample (n = 359) of health university students. Construct validity evidence was verified through the factorial and convergent validity by Confirmatory Factor Analysis (CFA) and internal consistency and stability analysis through Cronbach’s alpha and intraclass correlation coefficient (ICC) respectively. Discriminative power of items were analyzed using item-total correlation and point biserial correlation. Results OCS-BR presented satisfactory evidence of construct validity. The instrument showed Cronbach’s alpha of 0.91 and ICC of 0.91. Conclusion Portuguese (Brazil) version of OCS shows items consistently gatherd to measure the Problematic Internet Use (PIU) construct, it is considered s stable instrument in time and with sufficient evidence of construct validity.