bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reaching for the Gold Standard: Metaphors and Good University Teachers
Authors: Jin Lixian , Cortazzi Martin 
Published: February 2021

Abstract
This article considers “good” teachers in the context of current developments in universities in China to reach a “gold standard” of considerably higher and more challenging levels of teaching and learning. We outline this context and consider concepts of good teachers in classical Chinese traditions and more recent Western thinking as a possible dialogue within and between cultures of learning. Using cognitive and cultural linguistic perspectives, we analyze metaphorical concepts of “gold” in “the gold standard” as related to teachers. We report our applied metaphor research which analyzes Chinese students’ expectations, values and beliefs about good university language teachers; this presents a rich picture beyond developing knowledge, skills and understanding to include strong social and moral characteristics. Other aspects which recognize the complexity of “good” teachers show a student appreciation of teachers’ tireless effort, devotion and selfless sacrifice: these aspects are absent in many discussions of good teachers. The participant-centered picture from elicited metaphor analysis is part of students’ “cultures of learning,” but this should be developed culturally for the gold standard through further teacher development and student engagement. In line with interaction in cultures of learning, we indicate some classroom ways to extend students’ thinking through scaffolding teacher-student interaction based on textbook activities.
Researching Classroom-Based Assessment for Formative Purposes
Authors: Gu Peter Yongqi , Yu Guoxing 
Published: February 2021

Abstract
This article aims to help teacher-researchers engage in empirical research on classroom-based assessment for formative purposes. We will first introduce the key features of classroom-based formative assessment (CBFA), and analyze the research questions asked in round-one projects funded by the Fund for Assessment Research (FAR) in Foreign Language Education in China. Next, we will illustrate how some research questions can be answered by analyzing a video-taped lesson from a round-one FAR project. We conclude by calling for more teacher-led research and argue that research on CBFA by teachers will not only produce valid interpretations and applicable findings, but also constitute a viable model for teacher professional development.
Why Isnice andAdj So Much More Frequent than Adjand nice?—From the Perspective of Humans’ Social and Limited-Processing-Capacity Attributes
Authors: Peng Jinfang 
Published: February 2021

AbstractThis paper investigates the phenomenon of imbalance between the frequencies of thenice andAdj and Adjand nicepatterns from the perspective of humans’ social and limited-processing-capacity attributes. Humans’ social attribute requires that language users stay informative with minimal effort in communication, resulting in the from-the-least-to-the-most-informative information organization in discourse. Their limited-processing-capacity attribute requires that they resort to the production biases of “easy first” and “plan reuse” in order to achieve communicative efficiency in real-time production. The analysis of the occurrences of thenice andAdj pattern and native speakers’ judgment of the degree of informativeness ofnicein these occurrences suggest thatniceis largely delexicalized. Such delexicalization makesnice andAdj consistent with the information organization and allows language users to stay informative with the use of the pattern, thus in line with the social attribute, but not Adjand nice. In the meantime,niceis not only highly frequent but also conceptually salient when it comes to the positive property (Panther & Thornburg, 2009), makingnice andAdj easier to produce and more likely to be reused than Adjand nice, thus in line with the limited-processing-capacity attribute. The analysis of the unbalanced frequency of the two patterns suggests that human attributes should be considered when studying language form, and this should offer insights into English learning.
Approximate Discontinuous Trajectory Hotspots
Authors: Rudi Ali Gholami 
Published: February 2021

Abstract
A hotspot is an axis-aligned square of fixed side length s, where the amount of time a moving entity spends within it is maximised. An exact hotspot of a polygonal trajectory with n edges can be found with time complexity O(n
2). We define a c-approximate hotspot as an axis-aligned square of side length cs, in which the presence duration of the entity is no less than that of an exact hotspot. In this paper we present an algorithm to find a (1 + ϵ)-approximate hotspot of a polygonal trajectory with time complexity

O

(

n
ϕ

ϵ

log

n
ϕ

ϵ

)

O\left( {{{n\phi } \over \varepsilon }\log {{n\phi } \over \varepsilon }} \right)

, where ϕ is the ratio of average trajectory edge length to s.
Process Emulation System for High-Power Piezoelectric Ultrasonic Actuators
Authors: Ille Igor , Mojrzisch Sebastian , Twiefel Jens 
Published: February 2021

Abstract
Ultrasonic actuators are used for a wide field of applications. The vibration energy can be used to realize many processes like ultrasonic welding or bonding. Furthermore there are many processes which run more efficient and faster combined with ultrasonic vibration like ultrasonic-assisted turning or drilling. Piezoelectric transducers are the main part of those applications. Most of the applications have a time-variant load behavior and need an amplitude feedback control to guarantee a stable process. To ensure correct function tests of the feedback control systems have to be done. In this case the processes have to be executed in association with a high number of cycles. To emulate the behavior of the environment the automotive and aerospace industries use hardware in the loop systems since a long time but there is no such a method for ultrasonic systems. This paper presents a method to realize high dynamic load emulation for different ultrasonic applications. Using a piezoelectric transformer it is possible to reproduce load curves by active damping on the secondary side of the transformer using a current proportional digital feedback circuit. A theoretical and experimental study of hardware in the loop system for ultrasonic applications is given by this paper. The present system allows testing a wide field of feedback control algorithms with high flexibility and a high number of cycles by utilization of low-cost components. This proceeding decreases design periods in association with feedback control.
Temperature-Dependent Properties of a 1–3 Connectivity Piezoelectric Ceramic–Polymer Composite
Authors: Gu Xinyun , Yang Ying , Chen Ji , Wang Yiping 
Published: February 2021

Abstract
In this work, the 1–3 connectivity piezoelectric ceramic–polymer composites have been fabricated by a viscous-polymer processing, where 0.90Pb(Zr0.52Ti0.48)O3–0.05Pb(Mn1/3Sb2/3)O3–0.05Pb(Zn1/3Nb2/3)O3 (PZT–PMS–PZN) fibers with 0.5 volume fraction were aligned in epoxy matrix. The sintered PZT fibers, with average diameter of 300 μm and aspect ratio (height/diameter) higher than 3, all showed a pure perovskite phase structure and highly dense morphology. The dielectric, piezoelectric, ferroelectric properties and the vibration modes of the 1–3 composites were measured and demonstrated in comparison with that of the monolithic piezoelectric ceramics. The results confirmed that the 1–3 composites possessed a low acoustic impedance (Z) of 13 MRayl and a high thickness coupling coefficient (k
t) of 0.59, in addition, only single thickness vibration mode with the resonance frequency over 1.5 MHz was observed. With temperature elevation, the properties including dielectric constant εr
, k
t, the ratio of k
t to k
p (k
t/k
p) and the acoustic impedance (Z) increase, while the planar electromechanical coupling coefficient (k
p) show opposite temperature dependence. Under test temperature of 100°C, the 1–3 composites still present excellent temperature stability with increased k
t/k
p ratio up to 3.6. The researches on temperature-dependent properties of the 1–3 composites are critical for improving its applications in various environments.
Co-firing of PZT–PMS–PZN/Ag Multilayer Actuator Prepared by Tape-Casting Method
Authors: Fan Kang-Kang , Wang Yi-Ping , Yang Ying 
Published: February 2021

Abstract
Multilayer ceramic actuator composed of piezoelectrically active 0.90Pb(Zr0.48Ti0.52)O3–0.05Pb(Mn1/3Sb2/3)O3–0.05Pb(Zn1/3Nb2/3)O3 (PZT–PMS–PZN) layers and electrically conducting silver metal layers were fabricated. Low-temperature sinterable PZT–PMS–PZN ceramics were used as the piezoelectric layers, and silver paste was used as the conductive inner-electrode layers. PZT–PMS–PZN powder, adding 1% CuO as a sintering agent, was prepared by a conventional solid-state reaction process. The green sheet was fabricated by tape-casting method. Silver inner-electrode was printed on the green-tape sheets and the sheets were stacked, warm-pressed, and sintered at 900°C for 4 h after burning out the organic additions. The sintered multilayer ceramics actuator shows distinct layers with few defects in the interfaces. The thicknesses of the piezoelectric and conducting layers are about 40 and 6 μm, respectively. The multilayer PZT–PMS–PZN actuator, composed of 60 active piezoelectric layers, presents a longitudinal displacement of about 2.7 μm at an applied voltage of 80 V, approximately 0.1% of the total thickness of itself.
Love, Guilt, Death and Art in Ibsen’s When We Dead Awaken
Authors: Knápek Pavel 
Published: February 2021

Abstract
This article presents an original interpretation of Henrik Ibsen’s work When We Dead Awaken by advancing a hypothesis which explains Rubek and Irene’s path into death as an act of atonement. The analysis encompasses reflections on the meaning of terms such as love, life, art and guilt in the context of the work. The article emphasises the importance of children’s education, which proves itself to be the only effective way to contribute to mankind’s refinement – something very important in the main character’s view. In its last part the article seeks causes of the altered behaviour of the main characters immediately before their deaths (especially their feeling of attraction to death).
Design and numerical study of turbines operating with MDM as
working fluid
Authors: Klonowicz Piotr , Surwiło Jan , Witanowski Łukasz , Suchocki Tomasz K. , Kozanecki Zbigniew , Lampart Piotr 
Published: February 2021

Abstract
Design processes and numerical simulations
have been presented for a few cases of turbines designated
to work in ORC systems. The chosen working fluid isMDM.
The considered design configurations include single stage
centripetal reaction and centrifugal impulse turbines as
well as multistage axial turbines. The power outputs vary
from about 75 kW to 1 MW. The flow in single stage turbines
is supersonic and requires special design of blades.
The internal efficiencies of these configurations exceed
80% which is considered high for these type of machines.
The efficiency of axial turbines exceed 90%. Possible turbine
optimization directions have been also outlined in the
work.
Numerical investigation of a GTM-140 turbojet
engine
Authors: Suchocki Tomasz , Lampart Piotr , Klonowicz Piotr 
Published: February 2021

Abstract
The paper presents three-dimensional numerical
simulations of combustion in the GTM-140 miniature
turbine engine. The main aim of the work is to understand
the processes occurring in the combustion chamber. The
coupling of chemical kinetics, thermochemistry, transport
of mass, energy and momentum, and fluid mechanics is a
challenge for the engineers. The knowledge of these issues
is essential to achieve a high performance product. The k-
ϵ (RANS) Turbulence Model and Non-Premixed Model for
the combustion was used. The particles of fluid droplets
were described by the Discrete Phase Model.
Predicative possession across Western Iranian languages
Authors: Mohammadirad Masoud 
Published: February 2021

AbstractThis paper offers a first systematic investigation of predicative possessive constructions across Western Iranian languages. The notion of possession is conceived as a prototypical domain. It is shown that investigated languages are classified into two major areally distributed groups with respect to predicative possessive constructions: (i) “be”-verb languages, (ii) “have”-verb languages. “Have”-possessives, which originated from “action schema”, are argued to have superseded the archaic “be”-possessives, which trigger a non-canonical marking of the possessor argument. However, “have”-verb languages have preserved relics of the older “be”-possessive in some neighbouring domains to possession. In addition, two languages exhibit possession split and are in transition from “be”-possession to “have”-possession: these languages demonstrate the effect of alienability/inalienability in such a split.
Nasality in Dagbani prosody
Authors: Hudu Fusheini , Nindow Mohammed Osman 
Published: February 2021

Abstract
This paper presents a detailed analysis of nasality in Dagbani, a Gur language of Ghana, and the role it plays in Dagbani prosody. It demonstrates that the nasal is at the centre of defining the range of what is possible in Dagbani prosodic patterns. Nasals provide the basis for determining the full range of syllable types and the tone bearing unit of Dagbani; nasals are the only coda consonants that licence vowel lengthening; and nasals provide the only cases of phonological non-vocalic geminates. The overall effects of the influence of nasality is the emergence of complex prosodic structures. Contrary to the crosslinguistically acclaimed marked position of the coda, the CVN syllable is the default, unmarked syllable in Dagbani.
Spanish [auto +V+ se] constructions
Authors: Orqueda Verónica , Arriagada Silvana , Toro Francisca 
Published: February 2021

AbstractIn this paper we analyse Spanish verbal constructions that accept both the cliticseand the prefixauto-in order to determine whether these formations are or are not more agentive than the corresponding non-prefixed constructions (autocriticarse vs. criticarse). The proposal arises from the discussion about the different semantic values observed in formations withauto-and explores the distinctive features of such formations in contrast to those withoutauto-. We carried out a twofold analysis: first, we applied a set of tests of agentivity and control to a sample of 130 verbs withauto-extracted from the Modern Spanish Reference Corpus (CREA) and compared the sample with its non-prefixed pronominal pairs (i.e. verbs with cliticse). Second, we carried out a series of surveys using similar tests with Spanish speakers to guarantee the acceptability of the corpus interpretations. We argue that prefixed constructions show a higher degree of agentivity and control by external arguments, which results in the impossibility of bidirectionally replacing these constructions with those that only have the cliticse.
Datives with psych nouns and adjectives in Basque
Authors: Fernández Beatriz , Zúñiga Fernando , Berro Ane 
Published: February 2021

AbstractThis paper explores the formal expression of two Basque dative argument types in combination with psych nouns and adjectives, in intransitive and transitive clauses: (i) those that express the experiencer, and (ii) those that express the stimulus of the psychological state denoted by the psych noun and adjective. In the intransitive structure involving a dative experiencer (DatExpIS), the stimulus is in the absolutive case, and the intransitive copulaizan‘be’ shows both dative and absolutive agreement. This construction basically corresponds to those built upon thepiaceretype of psychological verbs typified in (Belletti, Adriana & Luigi Rizzi. 1988. Psych-verbs andθ-theory.Natural Language and Linguistic Theory6. 291–352) three-way classification of Italian psych verbs. In the intransitive structure involving a dative stimulus (DatStimIS), the experiencer is marked by absolutive case, and the same intransitive copula shows both absolutive and dative agreement (with the latter corresponding to the dative stimulus and not to the experiencer). We show that the behavior of the dative argument in the two constructions is just the opposite of each other regarding a number of morphosyntactic tests, including agreement, constituency, hierarchy and selection. Additionally, we explore two parallel transitive constructions that involve either a dative experiencer and an ergative stimulus (DatExpTS) or a dative stimulus and an ergative experiencer (DatStimTS), which employ the transitive copula *edun‘have’. Considering these configurations, we propose an extended and more fine-grained typology of psych predicates.
Contact Problems for Two Anisotropic Half-Planes with Slits
Authors: Zazashvili SH. 
Published: February 2021

Abstract
The problem of a stressed state in a nonhomogeneous infinite plane consisting of two different anisotropic half-planes and having slits of the finite number on the interface line is investigated. It is assumed that a difference between the displacement and stress vector values is given on interface line segments; on the edges of slits we have the following data: boundary values of the stress vector (problem of stress) or displacement vector values on the one side of slits, and stress vector values on the other side (mixed problem). Solutions are constructed in quadratures.
Two-Weighted Estimates for Some Integral Transforms in the Lebesgue Spaces with Mixed Norm and Imbedding Theorems
Authors: Kokilashvili V. 
Published: February 2021

Abstract
Two-weighted inequalities are proved for anisotropic potentials. These estimates are used to obtain the refinements of the well-known imbedding theorems in the scale of weighted Lebesgue spaces.
Complexity of the Decidability of the Unquantified Set Theory with A Rank Operator
Authors: Tetruashvili M. 
Published: February 2021

Abstract
The unquantified set theory MLSR containing the symbols ∪, \, =, ∈, R (R(x) is interpreted as a rank of x) is considered. It is proved that there exists an algorithm which for any formula Q of the MLSR theory decides whether Q is true or not using the space c|Q|3 (|Q| is the length of Q).
On a Generalization of the Keldysh Theorem
Authors: Jaiani G. 
Published: February 2021

Abstract
The Keldysh theorem for an elliptic equation with characteristic parabolic degeneration is generalized for the case of an elliptic equation of the second-order canonical form with order and type degeneration. The criteria under which the Dirichlet or Keldysh problems are correct are given in a one-sided neighborhood of the degeneration segment, enabling one to write the criteria in a single form. Moreover, some cases are pointed out in which it is even nessesary to give a criterion in the neighborhood because it is impossible to establish it on the segment of degeneracy of the equation.
Global Dimensions of Subidealizer Rings
Authors: Koker John 
Published: February 2021

Abstract
Recently, there have been many results which show that the global dimension of certain rings can be computed using a proper subclass of the cyclic modules, e.g., the simple modules. In this paper we view calculating global dimensions in this fashion as a property of a ring and show that this is a property which transfers to the ring's idealizer and subidealizer ring.
On the Mode-Change Problem for Random Measures
Authors: Hahubia Ts. , Mnatsakanov R. 
Published: February 2021

Abstract
The classical change-point problem in modern terms, i.e., the mode-change problem, is stated for sufficiently general set-indexed random processes, namely for random measures. A method is shown for solving this problem both in the general form and for the intensity of compound Poisson random measures. The results obtained are novel for the change-point problem, too.
Non-Baire Unions in Category Bases
Authors: Hejduk J. 
Published: February 2021

Abstract
We consider a partition of a space X consisting of a meager subset of X and obtain a sufficient condition for the existence of a subfamily of this partition which gives a non-Baire subset of X. The condition is formulated in terms of the theory of J. Morgan [Point Set Theory, Marcel Dekker, 1990].
Upper Estimate of the Interval of Existence of Solutions of a Nonlinear Timoshenko Equation
Authors: Bainov Drumi , Minchev Emil 
Published: February 2021

Abstract
Solutions to the initial-boundary value problem for a nonlinear Timoshenko equation are considered. Conditions on the initial data and nonlinear term are given so that solutions to the problem under consideration do not exist for all t > 0. An upper estimate of the t-interval of the existence of solutions is obtained. An estimate of the growth rate of the solutions is given.
On the Riemann–Hilbert Problem in the Domain with a Nonsmooth Boundary
Authors: Kokilashvili V. , Paatashvili V. 
Published: February 2021

Abstract
The following Riemann–Hilbert problem is solved: find an analytical function Φ from the Smirnov class Ep
(D), whose angular boundary values satisfy the condition
Re[(a(t) + ib(t))Φ+ (t)] = ƒ(t).
The boundary Γ of the domain D is assumed to be a piecewise smooth curve whose nonintersecting Lyapunov arcs form, with respect to D, the inner angles with values νkπ, 0 < νk
≤ 2.
Non-Abelian Cohomology of Groups
Authors: Inassaridze H. 
Published: February 2021

Abstract
Following Guin's approach to non-abelian cohomology [Guin, Pure Appl. Algebra 50: 109–137, 1988] and, using the notion of a crossed bimodule, a second pointed set of cohomology is defined with coefficients in a crossed module, and Guin's six-term exact cohomology sequence is extended to a nine-term exact sequence of cohomology up to dimension 2.
Asymptotic Solutions for Mixed-Type Equations with A Small Deviation
Authors: Hou Zhanyuan , Cassell J. S. 
Published: February 2021

Abstract
An asymptotic matrix solution is formulated for a class of mixed-type linear vector equations with a single variable deviation which is small at infinity. This matrix solution describes the asymptotic behavior of all exponentially bounded solutions. A sufficient condition is obtained for there to be no other solutions.
Spectral and Boundedness Radii in Locally Convex Algebras
Authors: El Kinani A. , Oubbi L. , Oudadess M. 
Published: February 2021

Abstract
Connections between the spectral radius and the radius of boundedness are studied. Different characterizations of algebras (Q-property, strong saquentiality) are given in terms of these radii. Examples and applications are also provided.
On Some Contact Problems for Bodies with Elastic Inclusions
Authors: Shavlakadze N. 
Published: February 2021

Abstract
The paper deals with the contact problems of the theory of elasticity. The problems are reduced to Prandtl-type integral differential equations with a coefficient at the singular operator which has higher-order zeros at the ends of the integration interval. In some concrete cases the solution is constructed efficiently. Asymptotic representations are obtained.
On the Buchstaber Subring in MSp∗
Authors: Bakuradze M. 
Published: February 2021

Abstract
A formula is given to calculate the last n number of symplectic characteristic classes of the tensor product of the vector Spin(3)- and Sp(n)-bundles through its first 2n number of characteristic classes and through characteristic classes of Sp(n)-bundle. An application of this formula is given in symplectic cobordisms and in rings of symplectic cobordisms of generalized quaternion groups.
Regularity in Morrey Spaces of Strong Solutions to Nondivergence Elliptic Equations with VMO Coefficients
Authors: Fan Dashan , Lu Shanzhen , Yang Dachun 
Published: February 2021

Abstract
In this paper, by means of the theories of singular integrals and linear commutators, the authors establish the regularity in Morrey spaces of strong solutions to nondivergence elliptic equations with VMO coefficients.