bluuebunny/crossref_metadata_2025 huggingface dataset:
A Hyers-Ulam stability analysis for classes of Bessel equations
Authors: Castro L.P. , Simões A.M.
Published: February 2022

Mathematical modeling helps us to better understand different natural
phenomena. Modeling is most of the times based on the consideration of
appropriate equations (or systems of equations). Here, differential equations
are well-known to be very useful instruments when building mathematical
models - specially because that the use of derivatives offers several
interpretations associated with real life laws. Differential equations are
classified based on several characteristics and, in this way, allow different
possibilities of building models. In this paper we will be concentrated in
analysing certain stability properties of classes of Bessel differential
equations. In fact, the main aim of this work is to seek adequate conditions
to derive different kinds of stabilities for the Bessel equation and for the
modified Bessel equation by considering a perturbation of the trivial
solution. In this way, sufficient conditions are obtained in order to
guarantee Hyers-Ulam-Rassias, ?-semi-Hyers-Ulam and Hyers-Ulam stabilities
for those equations.
Unbounded order-norm continuous and unbounded norm continuous operator
Authors: Azar Kazem , Matin Mina , Alavizadeh Razi
Published: February 2022

A continuous operator T between two normed vector lattices E and F is called
unbounded order-norm continuous whenever x? uo? 0 implies ||Tx?|| ? 0, for
each norm bounded net (x?)? ? E. Let E and F be two Banach lattices. A
continuous operator T : E ? F is called unbounded norm continuous, if for
each norm bounded net (x?)? ? E, x? un? 0 implies Tx? un? 0. In this
manuscript, we study some properties of these classes of operators and
investigate their relationships with the other classes of operators.
Inequalities related to Schatten norm
Authors: Gao Fugen , Li Meng , Tian Mengyu
Published: February 2022

In this paper, we investigate the known operator inequalities for the
p-Schatten norm and obtain some refinements of these inequalities when
parameters taking values in different regions. Let A1,...,An, B1,...,
Bn ? Bp(H) such that ?ni,j=1Ai*Bj=0. Then p ? 2, p ? ? and ? ? 2,
21/p-?/4n3/p-?/4-1/2(?ni=1 ||Ai||4/?p + ?ni=1 ||Bi||4/?p )?/4 ?
n2/p-1/2||?ni=1 |Ai|2 + ?ni=1 |Bi|2||1/2 p/2 ? n2/p-2/?(?ni,j=1 ||Ai ?
Bj||?p)1/?. For 0 < p ? 2, p ? ? > 0 and 0 < ? ? 2, the inequalities are
reversed. Moreover, we get some applications of our results.
Equi-statistical convergence of a sequence of distribution functions via deferred Nörlund summability mean and associated approximation theorems
Authors: Jena Bidu
Published: February 2022

In this paper, the notion of statistical point-wise convergence,
equi-statistical convergence and statistical uniform convergence of a
sequence of distribution functions via the deferred N?rlund summability
mean has been introduced, and accordingly an inclusion relation between
these interesting notions is established. Moreover, as an application point
of view, a new Korovkin-type approximation theorem is proved via the
deferred N?rlund equi-statistical convergence for the sequence of
distribution functions. Also, some illustrative examples are considered to
justify that the proposed theorem is a nontrivial extension of some well
established Korovkin-type approximation theorems for sequence of real-valued
functions. Finally, a number of interesting cases are highlighted in support
of the definitions and outcomes.
Approximation properties of bivariate Szász Durrmeyer operators via Dunkl analogue
Authors: Rao Nadeem , Heshamuddin Md , Shadab Mohd , Srivastava Anshul
Published: February 2022

In the present article, we construct a new sequence of bivariate
Sz?sz-Durrmeyer operators based on Dunkl analogue. We investigate the order
of approximation with the aid of modulus of continuity in terms of well
known Peetre?s K-functional, weighted approximation results, Voronovskaja
type theorems and Lipschitz maximal functions. Further, we also discuss here
the approximation properties of the operators in B?gel-spaces by use of
mixed-modulus of continuity.
On generalized random environment INAR models of higher order: Estimation of random environment states
Authors: Pirkovic Bogdan , Laketa Petra , Nastic Aleksandar
Published: February 2022

The behavior of a generalized random environment integer-valued
autoregressive model of higher order with geometric marginal distribution
and negative binomial thinning operator is dictated by a realization {zn}?,n=1 of an auxiliary Markov chain called random environment process. Element
zn represents a state of the environment in moment n ? N and determines all
parameters of the model in that moment. In order to apply the model, one
first needs to estimate {zn}?,n=1, which was so far done by K-means data
clustering. We argue that this approach ignores some information and
performs poorly in certain situations. We propose a new method for
estimating {zn}?,n=1, which includes the data transformation preceding the
clustering, in order to reduce the information loss. To confirm its
efficiency, we compare this new approach with the usual one when applied on
the simulated and the real-life data, and notice all the benefits obtained
from our method.
Applications of the Horadam polynomials involving λ-pseudo-starlike bi-univalent functions associated with a certain convolution operator
Authors: Srivastava H.M. , Wanas A.K.
Published: February 2022

In this article, we introduce and study a new family P?(?,?,k,?,?,?,r)
of normalized analytic and ?-pseudo-starlike bi-univalent functions by using
the Horadam polynomials, which is associated with a certain convolution
operator defined in the open unit disk U. We establish the bounds for |a2|
and |a3|, where a2, a3 are the initial Taylor-Maclaurin coefficients.
Furthermore, we obtain the Fekete-Szeg? inequality for functions in the
class P? (?,?,k,?,?,?,r), which we have introduced here. We indicate
several special cases and consequences for our results. Finally, we comment
on the recent usages, especially in Geometric Function Theory of Complex
Analysis, of the basic (or q-) calculus and also of its trivial and
inconsequentional (p,q)-variation involving an obviously redundant
parameter p.
On the disjoint sums of M-fuzzifying convex spaces
Authors: Dong Yan , Shi Fu-Gui
Published: February 2022

In this paper, we first extend the concept of the arity in crisp convex
spaces to the case of fuzzification and give some related properties. From
the view of arity and hull operator, we study the relations between the
disjoint sum of M-fuzzifying convex spaces and its factor spaces. We also
examine the additivity of the degree of separability (S0,S1,S2,S3,S4).
Finally, we show that every factor space is M-fuzzifying JHC iff the
corresponding disjoint sum space is JHC.
Multiple nonnegative solutions for a class IVPs for second order ODEs
Authors: Georgiev Svetlin , Majdoub Mohamed , Mebarki Karima
Published: February 2022

We study a class of initial value problems for second order ODEs. The
interesting points of our results are that the nonlinearity depends on the
solution and its derivative and may change sign. Moreover, it satisfies
general polynomial growth conditions. A new topological approach is applied
to prove the existence of at least two nonnegative classical solutions. The
arguments are based upon a recent theoretical result.
Degenerate Sumudu transform and its properties
Authors: Duran Ugur
Published: February 2022

Kim-Kim (Russ. J. Math. Phys. 2017, 24, 241-248) defined the degenerate
Laplace transform and investigated some of their certain properties.
Motivated by this study, in this paper, we introduce the degenerate Sumudu
transform and establish some properties and relations. We derive degenerate
Sumudu transforms of power functions, degenerate sine, degenerate cosine,
degenerate hyperbolic sine, degenerate hyperbolic cosine, degenerate
exponential function, and function derivatives. We also acquire a
relationship between degenerate Sumudu transform and degenerate gamma
function. Moreover, we investigate a scale preserving theorem for the
degenerate Sumudu transform. Furthermore, we show that the degenerate Sumudu
transform is the theoretical dual transform to the degenerate Laplace
transform.
Composition results of Stepanov (μ,ν)-pseudo almost automorphic functions
Authors: Rebey Amor , Eljeri Mosbah
Published: February 2022

In this work, we give sufficient conditions ensuring that the space SpPAA(R,X,
?,?) of (?,?)-pseudo almost automorphic functions in Stepanov?s sense is
invariant by translation and we provide new composition theorems of (?,?)-pseudo almost automorphic functions in the sense of Stepanov.
The Kontorovich-Lebedev-Clifford transform
Authors: Prasad Akhilesh , Mandal U.K.
Published: February 2022

The Kontorovich-Lebedev-Clifford transform (KLC-transform) as well as its
inversion are defined. The useful preliminary results like translation and
convolution operators are introduced and their estimates are obtained.
Continuity of translation and convolution operators on function spaces F?
and G? are discussed. Further, pseudo-differential operator (p.d.o.)
associated with the KLC-transform is defined and studied its properties on
some function spaces.
Alternative criteria for boundedness of one class of integral operators in Lebesgue spaces
Authors: Kalybay Aigerim
Published: February 2022

The paper discusses weighted Hardy type inequalities for a certain class of
Volterra type integral operators with kernels. Criteria for the validity of
the presented inequalities are found, which are different from the criteria
obtained earlier.
Effect of anti-predator behaviour in a prey-predator system with strong Allee effect in prey population
Authors: Saha Sangeeta , Samanta G.P.
Published: February 2022

In this work a predator-prey model is proposed where prey species shows
anti-predator behaviour to save themselves from predator?s attack. Moreover,
a strong Allee effect has been introduced in the prey population to make the
model more realistic to the environment. Both generalist and specialist
predators have been taken to observe the system dynamics minutely. The
predator population decreases with increasing value of ?rate coefficient of
anti-predator behaviour? when generalist predator is considered but in
presence of the specialist predator, the predator population first increases
up to a threshold value and then decreases. It means a very small rate of
anti-predation does not affect the predator?s growth very much but if prey
attacks the predator at a larger rate, then the predator population
decreases. Also, the existence of one dimensional and two-dimensional
bifurcations have been observed by making different parameters as bifurcating
parameters around the steady states.
Symmetries in Yetter-Drinfel’d-Long categories
Authors: Yan Dongdong , Wang Shuanhong
Published: February 2022

Let H be a Hopf algebra and LR(H) the category of Yetter-Drinfel?d-Long
bimodules over H. We first give sufficient and necessary conditions for LR(H)
to be symmetry and pseudosymmetry, respectively. We then introduce the
definition of the u-condition in LR(H) and discuss the relation between the
u-condition and the symmetry of LR(H). Finally, we show that LR(H) over a
triangular (cotriangular, resp.) Hopf algebra contains a rich symmetric
subcategory.
On tripled fixed point theorems via measure of noncompactness with applications to a system of fractional integral equations
Authors: Parvaneh Vahid , Banaei Shahram , Roshan Jamal , Mursaleen M.
Published: February 2022

In this paper, an extension of Darbo?s fixed point theorem via the concept
of operators A(f;.) and ?-?-contractions in a Banach space has been
presented. We illustrate that some conditions of control functions ? and ?
can be omitted where they applied previously in [Mohammadi et al.,
Mathematics, 2020, 8(4), 492]. As an application, we study the existence of
solutions for a system of fractional integral equations. Finally, to support
the effectiveness of our results, we present an example.
On the rank of semigroup of transformations with restricted partial range
Authors: Jin Jiulin
Published: February 2022

Let T(X) be the full transformation semigroup on a nonempty set X. For ? ? Z
? Y ? X, let T(X,Y,Z) = {? ? T(X):Y? ? Z}. It is not difficult to see that
it is a generalized form of three well-known semigroups. This paper obtains
an isomorphism theorem of T(X,Y,Z). In addition, when X is finite and Z ? Y
? X, the rank of the semigroup T(X,Y,Z) is calculated.
New estimates for the numerical radius
Authors: Moradi Hamid , Sababheh Mohammad
Published: February 2022

In this article, we present new inequalities for the numerical radius of the
sum of two Hilbert space operators. These new inequalities will enable us to
obtain many generalizations and refinements of some well known inequalities,
including multiplicative behavior of the numerical radius and norm bounds.
Among many other applications, it is shown that if T is
accretive-dissipative, then 1/?2 ||T|| ? ?(T), where ?(?) and ||?||denote the
numerical radius and the usual operator norm, respectively. This inequality
provides a considerable refinement of the well known inequality 1/2 ||T|| ? ?(T).
ARE AFRICAN AMERICAN ATHLETES AND CELEBRITIES OBLIGATED NOT TO USE THE N-WORD?
Authors: Spurgin Earl
Published: February 2022

In 2014, the leadership of the National Football League instructed the league’s game officials to penalize players who use the n-word on the field. The league’s action sparked another installment of the long-running public debate over whether African Americans should use the n-word. The parties to the debate often adopt contrasting positions on whether African American athletes and celebrities are obligated morally not to use the term. This paper examines the most significant arguments, revealed by the public debate, in favor of such an obligation. By demonstrating that all of those arguments fail, I conclude that unless there is a sound argument for the obligation that I have overlooked, African American athletes and celebrities have no obligation that prohibits them from using the n-word.
WHAT CAN’T MONEY BUY?
Authors: Taylor James Stacey
Published: February 2022

It is usual in debates over the appropriate limits of markets to note that there are some goods—such as Nobel Prizes, academic grades, military medals, friendship, and love—that cannot be bought and sold. But while it is common to hold that the nature of certain goods precludes their monetary transfer, there has been no systematic account of why this is so. This paper will remedy this omission by identifying the properties that preclude the possibility of the monetary alienability of the goods that possess them. And while this will identify some goods that money cannot buy, many other goods that are believed to be beyond the reach of the market will turn out to be monetarily alienable—including all of those mentioned above.
TWO-DIMENSIONAL CONCEPTIONS OF POLITICAL LIBERTY
Authors: Ballingrud Gordon
Published: February 2022

The objective of this paper is to combine two orthogonal conceptions of political liberty into one heuristic. The liberal and republican conceptions of liberty are the dominant explanations of political liberty: the former consisting in the absence of restraint, and the latter in the absence of domination. I argue that neither of these conceptions is adequate on its own. Using either in isolation leads to gaps, occasions in which we might wish to describe a person as unfree without the resources from either conception allowing us to do so. Therefore, I provide a heuristic that allows combining both conceptions into one conceptual plane. I hope also to describe the underlying dimension on which I place both the liberal and republican conceptions, invoking Nussbaum’s and Sen’s conceptions of capabilities.
REPENTANCE AND CONSCIENTIOUS VIOLENT EXTREMISTS
Authors: Tudor Steven
Published: February 2022

This article examines what repentance might mean on the part of conscientious violent extremists, who commit very serious violent crimes, intending their acts to advance a political or ideological cause and firmly believing their acts to be morally permitted or required. The article looks at remorse, repudiation of one’s conduct, repudiating aspects of the self, and resolving to make amends. The article presents a modest conception of what should be accepted as repentance in such contexts. Repentance can come in degrees, and it should usually be enough that the extremist is genuinely remorseful and repudiates their violent actions against innocent people, even if it would be better in many cases if they also abandoned extremist thinking and dropped their commitment to their ultimate cause.
HOW CAN SANCTUARY POLICIES BE JUSTIFIED?
Authors: Wilcox Shelley
Published: February 2022

Over the past decade, the increased involvement of local police in facilitating the deportation of undocumented migrants has played a central role in creating a record-breaking volume of deportations from the United States. In response to this so-called deportation crisis, nearly six hundred localities have enacted sanctuary policies that limit their cooperation with federal authorities on immigration matters. This paper explores three moral justifications for sanctuary policies: the public safety, civil disobedience, and collective resistance arguments. Specifically, it addresses two questions: Which justifications are available for which types of sanctuary policies? What must these justifications accomplish in order to be successful? I argue that although common public safety considerations can justify some sanctuary policies, others are best understood as a form of legitimate collective resistance.
PUNISHMENT AND THE VALUE OF DESERVED SUFFERING
Authors: McKenna Michael
Published: February 2022

An assumption central to some forms of retributivism is that it is noninstrumentally good that a culpable wrongdoer suffers in receiving a deserved punishment. A justification for this can be built from a conversational theory of moral responsibility, and in particular deserved blame. On such a theory, deserved blame is fitting as a response to a wrongdoer insofar as it is conversationally meaningful as a reply to a wrong done. Punishment, it might be argued, has this feature too. The conversational aim in both deserved blame and punishment is for the guilty to grasp the meaning conveyed by those who blame or punish and then respond meaningfully by, for example, apologizing or expressing remorse. Ideally, a culpable agent would experience a form and degree of guilt suitable for a wrong done. So, a conversational theory of punishment can then be justified in terms of providing conditions conducive for a culpable wrongdoer to respond to punishment by manifesting an appropriately pained response of guilt.
THE SAFETY OF USING GENETICALLY ENGINEERED ORGANISMS: EMPIRICAL EVIDENCE AND VALUE JUDGMENTS
Authors: Lacey Hugh
Published: February 2022

Are claims made about the safety of using genetically engineered organisms (GEOs) well enough supported by available empirical data to justify the many uses of GEOs and the priority increasingly being given to developing and expanding GEO-oriented agriculture? I will explore the ways in which empirical results and value judgments are entangled when making appraisals of these claims. I will discuss specifically how value judgments play roles in defining what counts as sufficient empirical evidence to support them, in identifying what kinds of risks need to be investigated empirically in order to obtain that evidence, and in deciding what forms of agriculture constitute the appropriate points of comparison when considering the risks of using GEOs.
Control and Optimization of Pre-Transmission Parallel Hybrid Vehicle with Fuzzy Logic Method and Comparison with Conventional Rule Based Control Strategy
Authors: KOCAKULAK Tolga , SOLMAZ Hamit , ŞAHİN Fatih
Published: February 2022

In this study, a model of a pre-transmission parallel hybrid vehicle was created in MATLAB/Simulink environment. A torque control strategy has been developed for the hybrid vehicle on the created model. The hybrid vehicle's torque control is provided by fuzzy logic and conventional rule-based control strategies. The control strategies of the hybrid vehicle have been developed based on four input parameters: accelerator and brake pedal position, battery state of charge and the operating mode of the electric motor. The regenerative braking system of the pre-transmission parallel hybrid vehicle has been provided with a fuzzy logic control strategy in both vehicle structures. In the fuzzy logic torque split controller, a control algorithm has been created in which the safety, performance and fuel consumption values of the vehicle meet at the optimum point. Under different driving cycle conditions, the effects of control strategies on engine operating points have been examined and average fuel consumption values have been obtained. In the control of the parallel hybrid vehicle with fuzzy logic method, it has been obtained that it provides 12.87%, 6.62%, 2.27% and 6.23% fuel savings under FTP-75, NEDC, EUDC and ECE-15 driving cycle conditions, respectively. It has been observed that the vehicle cannot provide sufficient performance in US06 driving cycle conditions with the use of conventional rule-based control strategy.
Práctica docente y ciudadanía en educación superior
Authors: Jasso Velazquez David , Villagrán Rueda Sonia , Rodríguez Ortiz Mónica
Published: February 2022

El objetivo del presente estudio es determinar el grado de ciudadanía en los estudiantes de educación superior de la Unidad Académica de Psicología de la Universidad Autónoma de Zacatecas (UAZ), incluyendo la responsabilidad democrática, el respeto a las diferencias humanas y la convivencia y paz. El método fue cuantitativo de alcance correlacional y diseño transversal. Se aplicó un instrumento de elaboración propia denominado “Cuestionario de práctica docente y ciudadanía” a 106 estudiantes de la UAZ. Entre los resultados se encontró que existe una cohesión de fuerte a moderada entre las variables de los ejes Práctica Docente y Ciudadanía, ya que se observó una correlación por encima de 0.234, con una significancia menor a 0.05. Esto indica que si el docente se forma de manera crítica, realiza valoraciones de los procesos de enseñanza y aprendizaje a través del diálogo, interactúa con otros docentes y construye y vive valores en su contexto educativo y social estará influyendo en la formación de un habitus ciudadano con su estudiantado, repercutiendo positivamente en la sociedad. Aquí se muestra que la docencia se encuentra totalmente vinculada a la conformación de prácticas de ciudadanía, lo que explica la relación contundente entre un docente preparado —que investiga, planifica y cuenta con una personalidad íntegra— y acciones de liderazgo de estudiantes capaces de solucionar y afrontar problemas y participar democráticamente.
Editorial - Thematic Number 2021 - Documentational Approach to Didactics
Authors: Barbosa Camargo Igliori Sonia , Almouloud Saddo Ag , Manrique Ana Lucia
Published: February 2022

Editorial - Thematic Number 2021 - Documentational Approach to Didactics
Orquestração Instrumental de uma situação Matemática de aplicações das Integrais Duplas
Authors: Feitosa Francisco Eteval , Rodrigues Roberta dos Santos
Published: February 2022

Este artigo tem por objetivo descrever e analisar uma orquestração instrumental que visou aplicar a integral dupla na determinação do centro de massa de uma lâmina de densidade variável e da carga elétrica em uma região dada. O estudo, de natureza qualitativa, envolveu alunos de licenciatura em matemática e de engenharia de uma universidade pública do Amazonas, e os dados foram coletados por observação das atividades em sala de aula e registrados por meio de gravação em vídeo e de um questionário em formulário eletrônico. O quadro teórico é composto da Teoria da Orquestração Instrumental de Luc Trouche e da Teoria das Situações Didáticas, de Guy Brousseau. Os resultados mostram, dentre outras coisas, que as etapas de ação, formulação, validação e institucionalização quando usadas no modo de execução da orquestração instrumental são importantes elementos das situações didáticas e que através delas, os processos de ensino e aprendizagem contribuem para a construção do conhecimento.
Da “Re(s)source Conference” de Lyon à Pandemia Covid-19: impactos e contribuições à teoria da Abordagem Documental do Didático
Authors: Igliori Sonia Barbosa Camargo
Published: February 2022

Neste artigo realizamos um sobrevoo em dois eventos que, de formas diferentes, impactaram e contribuíram com os estudos relativos à interlocução dos professores com recursos para o ensino, um meio de desenvolvimento da prática profissional. Esses eventos são “Re(s)source Conference” ocorrido em maio de 2018 na ENS de Lyon na França com o objetivo de refletir sobre a teoria Abordagem Documental do Didático, e o outro evento que se iniciou dois anos após de modo inesperado e sem organização, a Pandemia do Covid-19, cujos impactos continuam por todo o mundo, interferindo nas ações humanas. A “Conference” contou com a participação de pesquisadores de todos os continentes, e a Pandemia também não deixou ninguém de fora, atingindo o mundo todo de forma avassaladora e destruidora. O objetivo do artigo é refletir sobre a os efeitos desses eventos na educação de um modo geral e na educação matemática de um modo particular. É hora de repensar nossas relações sociais, incluindo aí a educacional.  Nessa perspectiva, é interessante o chamamento da UNESCO de que deveríamos tornar a matemática “humanizada”. Focando na ADD e seus constructos, é importante tirar lições do que a Pandemia nos indicou, buscar a renovação do sistema de recursos profissionais dos professores, em particular de matemática, com o apoio institucional, valorizar o trabalho coletivo e cooperativo e o uso abalizado de tecnologias, em favor de uma matemática para todos. Para o desenvolvimento do artigo, coletamos dados no site e anais da conferência, e em artigos recentes sobre os impactos da pandemia. Como resultado, evidenciamos as diferentes concepções sobre recursos, documentos, instrumentos, entre outros, e o que se inferiu sobre a interlocução professor/recursos e impactos da pandemia na educação, atingindo o objetivo proposto de iluminar as contribuições extraídos desses eventos para o avanço da ADD.
Study Tentang Pemberdayaan atau Penggunaan Alat Musik Sederhana Pada Kegiatan Bernyanyi di TK Wesley Kota Kaban Jahe
Authors: Lubis May Sari , Hidayati Isa , Kaban Siska Priskilla
Published: February 2022

Penelitian bertujuan untuk melihat dan menggambarkan efektivitas guru dalam mengembangkan kecerdasan musik anak usia dini melalui kegiatan bernyanyi dengan menggunakan alat musik oleh guru maupun peserta didik pada PAUD yang berada di Kecamatan Kaban Jahe Kabupaten Karo yakni TK Wesley Kota Kaban Jahe. Jenis penelitian yang digunakan adalah penelitian kualitatif deskriptif. Metode yang digunakan dalam penelitian ini adalah metode observasi, wawacara, dan studi dokumen. Penelitian ini dilaksanakan pada bulan oktober 2021 dalam satu kali kegiatan dengan subjek penelitian guru dan siswa-siswi TK Wesley Kota Kaban Jahe. Berdasarkan data yang diperoleh, guru di TK Wesley Kota Kaban Jahe belum sepenuhnya dapat mengembangkan dengan baik kecerdasan musik anak usia dini dengan pemanfaatan alat musik saat kegiatan bernyanyi. Hasil penelitian ini diharapkan dapat dijadikan bahan kajian para guru dalam menerapkan penggunaan alat musik dalam kegiatan bernyanyi serta menjadi acuan bagi pendidik anak usia dini dalam dalam menyiapkan program peningkatan kompetensi pendidik anak usia dini di bidang pengembangan kecerdasan musik anak usia dini.
Pengaruh Kegiatan Lari ZigZag Melewati Balok Kayu Terhadap Kemampuan Motorik Kasar Anak di TK Aisyiyah Busthanul Athfal 01 Medan T.A 2020/2021
Authors: Cempaka Sandra Azzahra , Simanjuntak Jasper
Published: February 2022

Penelitian Kuantitatif (Eksperimen) ini bertujuan untuk mengetahui pengaruh dari kegiatan berlari zigzag melewati balok kayu terhadap kemampuan motorik kasar anak. Sampel penelitian ini berjumlah 20 orang anak Teknik analisis data yang dilakukan pada penelitian ini adalah statistik deskriptif dan statistik nonparametrik melalui uji wilcoxon. Pengumpulan data menggunakan teknik observasi (checklist). Kegiatan lari zigzag ini dikatakan berhasil jika Ho diterima yang berarti terdapat perbedaan signifikan setelah melakukan kegiatan lari zigzag. Hasil Penelitian in membuktikan bahwa lari zigzag berpengaruh terhadap kemampuan motorik kasar anak kelompok B di TK ABA 01 Medan. Hal ini dibuktikan dengan jumlah skor anak bertambah 10,50 dilihat dari tabel analisis signed rank test. Hasil penelitian ini berpengaruh terhadap motorik kasar anak juga dapat dilihat dari pengujian hipotesis yaitu Ho diterima karena Whitung ≥ Wtabel, yang dijabarkan sebagai berikut Whitung = -46 ≥ Wttabel = 52.
Mental boundaries in teachers’ reflections on interculturalism in music lessons
Authors: Bubinger Anne
Published: February 2022

The German-speaking discourse on intercultural music education has gained increasing prominence since the 1970s and in particular more recently as a result of asylum and ref - ugee policies. While existing empirical studies focus primarily on the migration education perspective (see Wurm 2006, Schmidt 2015, Honnens 2017), often with respect to the role of Turkish youth, the perspectives of teachers on intercultural music instruction have received only limited attention. With the aim of contributing towards understanding teachers’ views, eight semi-structured interviews were conducted with music teachers in Germany concerning the association between interculturality and music teaching. Interview data was analyzed using a Grounded Theory approach (see Strauss & Corbin 1990), methodologically extended by situation analysis according to Clarke (see Clarke 2005). In the data analysis, the core category ‘Grenzen im Geist’ (mental boundaries) emerged from the coding process. Subse- quently, these mental boundaries, as well as intended strategies for overcoming and reducing them, were derived from teachers’ reflections on intercultural music teaching. In this paper, theoretical connections will be made between the following aspects: the migration-related discourse of intercultural music education, power-critical perspectives on boundaries, and selected excerpts of my qualitatively collected data material.
Teachers’ beliefs at German music schools a “messy construct” in a grounded theory study
Authors: Park Yeo-Jin
Published: February 2022

Teachers at music schools in Germany are confronted with very complex demands in their profession, ranging from artistic experience in various genres to pedagogical skills in the context of both broad-based and top-level promotion, as well as different age groups. It is not uncommon for certain tensions to arise when teachers try to meet all these requirements at the same time. Under such conditions, how do they define quality of instrumental and vocal tuition? As this is a matter of a still relatively young field of empirical research in Germany, such a basic and relevant research question has not yet been addressed. It is explored in my doctoral research project 2, which is an empirical study based on interviews with teachers at music schools in Germany3. The concept of teachers’ beliefs forms the theoretical framework and the data collected is analysed using Grounded Theory methodology. On the way towards developing a theory, it becomes apparent that educational quality from the teachers’ point of view is much more difficult to identify than expected. Therefore, it seems necessary to broaden the research question. This paper illustrates the processuality of my research with a focus on the methodological approach.
Tinjauan Pustaka : Aktivitas Antioksidan In Vitro dari Kulit Buah Manggis (Garcinia mangostana L.)
Authors: Azzahra Nabila Putri , Indradi Raden Bayu
Published: February 2022

AbstrakAntioksidan sebagai suatu zat yang pada konsentrasi rendah dapat menghambat proses stres oksidatif dari suatu subsrat yang dapat menetralkan efek reactive oxygen species (ROS) sehingga dapat mencegah berbagai penyakit. Jumlah antioksidan pada keadaan fisiologis normal seringkali tidak mencukupi untuk dapat menangkal radikal bebas, maka dari itu dibutuhkan tambahan asupan antioksidan. Salah satu sumber antioksidan alami dapat diperoleh dari kulit buah manggis (Garcinia mangostana L.). Telah banyak penelitian yang menunjukan aktivitas antioksidan dari kulit buah manggis menggunakan berbagai metode, sehingga tujuan dari review ini adalah untuk merangkum informasi dari penelitian-penelitian terkait yang telah dipublikasikan. Metode yang digunakan dalam penulisan artikel ini yaitu studi tinjauan pustaka (literauture review) dengan mencari kata kunci seperti antioksidan, Garcinia mangostana, metode in vitro dan lain-lain pada sumber basis data yaitu Pubmed, Google Scholar, dan Science Direct. Dari hasil tinjauan pustaka tersebut diperoleh berbagai senyawa bioaktif kulit buah manggis yang dievaluasi melalui berbagai metode pengujian in vitro serta beberapa faktor yang berpengaruh terhadap aktivitas antioksidan kulit buah manggis.
Comunicación y religión: la comunicación a la luz del Tratado de historia de las religiones de Mircea Eliade
Authors:   Escuela Profesional de Ciencias de la Comunicación, Universidad de San Martín de Porres, Perú, Sarapura Sarapura Mercedes Milagro
Published: February 2022

Todos los quehaceres humanos tienen sentido en la medida en que están ligados a una realidad trascendente (Eliade, 2001), y a ello no es ajena la comunicación que, además de ser una de las características ontológicas del hombre, resulta la única vía que permite la experiencia religiosa entendida como una interacción con lo sagrado; y así como ocurría con el hombre primitivo, en la actualidad el principal drama del hombre posmoderno se sitúa, precisamente, en la ruptura con su dimensión religiosa. La contrastación analítica entre religión y comunicación a partir de los estudios de Mircea Eliade deja en claro cómo confluyen de manera admirable la comunicación y la religión, con la misma intensidad de dos olas que se abrazan en el horizonte de la existencia. El hombre es un ser religioso irrevocable en la medida en que tiene sed de comunicación, en cuyo ámbito sabe que encontrará su propia realización.
La educación del siglo XXI: un proceso de formación integral de la persona humana
Authors:   Facultad de Ciencias de la Comunicación, Turismo y Psicología, Universidad de San Martín de Porres, Perú, Montenegro Carrasco Wilfredo
Published: February 2022

La educación del hombre es un tema que no deja de ser cuestionado. A pesar de los esfuerzos y de las diversas innovaciones en la materia, la crisis educativa de la «sociedad líquida» es cada vez más profunda y al mismo tiempo más relativa (Bauman, 2004). El hombre y sus actitudes, hoy fuertemente controvertidas por sus manifestaciones de violencia, irracionalidad, corrupción y rechazo de los valores, revelan la cruda realidad educativa. Frente a la situación descrita, la presente investigación se propone analizar las raíces de esta problemática y a la vez proponer reflexiones y alternativas innovadoras que ayuden a superar dicha crisis. Los resultados encontrados son reveladores y esperanzadores. Varios de los planteamientos de este trabajo ya están contemplados en la legislación y en la teoría educativa desde hace varias décadas; sin embargo, han quedado en el olvido por efectos del individualismo, la anomia, el escepticismo y el nihilismo propios de la sociedad posmoderna. El aporte factible y necesario es la educación sistémica de la persona que, superando los diversos reduccionismos, se centre en el «desarrollo humano integral» (Benedicto XVI, 2009); dejando en claro, asimismo, los roles de la familia, del Estado, de la escuela, de los medios de comunicación social, de la sociedad y del mismo educando frente al desafío de la educación actual.
Caracterización del turismo patrimonial
Authors:   Escuela Profesional de Turismo y Hotelería, Universidad de San Martín de Porres, Perú, Alberca-Sialer Fabrizio
Published: February 2022

En el presente artículo teórico se exponen dos perspectivas sobre cómo entender el turismo patrimonial. Su caracterización, siguiendo la línea que lo define como un turismo en el que visitados y visitantes comparten el patrimonio cultural del destino, es el tema que se discute. La actividad turística a nivel global vive el peor momento de su historia, motivo por el cual es necesario explorar alternativas que permitan una reactivación viable y sostenible. El turismo patrimonial en consecuencia, y por sus características, podría ser un medio para fomentar el turismo interno, que se reactivará con mayor dinamismo que el internacional.
Practical Potential of Grain Impurities in the Processing of Sunflower Oil Raw Materials in the Oil and Fat Industry
Authors: Mykhailov Yevhen , Zadosna Natalia , Ihnatiev Yevhen , Kutsenko Anastasiia , Hutsol Taras , Grotkiewicz Katarzyna , Firman Yuriy , Horetska Iryna
Published: February 2022

The analysis of statistical data showed that a large amount of plant waste is generated annually in oil and fat production plants, which must be processed and reused. The paper analyzes the problems of reusing sunflower oil production waste, which is characterized by a relatively high energy value: 1 ton of plant waste is equivalent to 0.625 tons of conventional fuel. According to the mathematical estimation, the actual total amount of impurities is 7.29%, in which major impurities constitute 25.7%. Studies have shown a high probability of oil – containing impurities – 37.25%. Therefore, it is recommended to process such impurities into fuel briquettes and technical oil to increase the profitability of sunflower oil production. For example, at the annual load of technological equipment of the Melitopol Oil Extraction Plant, in 250 days, at a daily processing capacity of 550 t˙day-1, an annual profit of 560,000 EUR is obtainable from the sunflower grain impurities processed into fuel and technical oil.
Zastosowanie leptyny rekombinowanej w leczeniu różnych typów lipodystrofii Treatment options with recombinant leptin in various types of lipodystrophy.
Authors: Hołysz Hanna , Totoń Ewa
Published: February 2022

Abstrakt

Lipodystrofie to grupa chorób objawiających się zanikiem i/lub nieprawidłowym rozmieszczeniem tkanki tłuszczowej w organizmie człowieka. W związku z tym, że tkanka tłuszczowa jest narządem hormonalnie czynnym, jej niedobór doprowadza do powstania wielu zaburzeń metabolicznych i hormonalnych, wynikających w dużej mierze ze zmniejszonego wytwarzania leptyny, jednego z ważniejszych hormonów wydzielanych przez tkankę tłuszczową. Leptyna jest cytokiną, która po połączeniu z receptorem leptynowym uczestniczy przede wszystkim w regulacji ośrodka głodu, ale także wywołuje angiogenezę i stymuluje układ odpornościowy, przez stymulację wysp beta trzustki reguluje glikemię, działa protekcyjnie na układ kostny, wpływa na płodność, cykl menstruacyjny i ciążę, hamuje syntezę triglicerydów w wątrobie i tkance tłuszczowej oraz stymuluje lipolizę. W związku z tym uważa się, że to właśnie niedobór leptyny jest odpowiedzialny za zaburzenia metaboliczne powstałe w przebiegu lipodystrofii. Badania kliniczne wskazują na możliwość wykorzystania rekombinowanej leptyny – metreleptyny w celu uzupełnienia niedoboru hormonu. U pacjentów z różnymi typami lipodystrofii po zastosowaniu metreleptyny zaobserwowano normalizację poziomu glukozy, triglicerydów i cholesterolu frakcji HDL. Ponadto pacjenci sygnalizowali zmniejszenie apetytu i spadek BMI przy jednoczesnym braku istotnych działań niepożądanych leku. W związku z tym dopuszczono wykorzystanie metreleptyny w Stanach Zjednoczonych i Europie do leczenia chorych z niektórymi typami lipodystrofii. Natomiast zastosowanie leku w innych schorzeniach objawiających się zaburzeniami metabolicznymi jest w fazie badań klinicznych.
Fruit Quality Indicators of Apple (Malus domestica Borkh.) Cultivars Bred in Ukraine
Authors: Shevchuk Liudmyla , Grynyk Igor , Levchuk Liudmyla , Babenko Svitlana , Podpriatov Hryhorii , Kondratenko Petro
Published: February 2022

As a result of the evaluation of the physical and biochemical quality indicators of the fruit of thirteen apple cultivars of Ukrainian breeding, it was found that the fruits of ‘Teremok’, ‘Skifs’ke Zoloto’, ‘Amulet’, ‘Perlyna Kyieva’, ‘Harant’, ‘Edera’, ‘Radohost’, ‘Todes’ and ‘Askol’da’ are characterized by high stability of market traits based on the maximum diameter of the equatorial dimension, which varies depending on the cultivar, from 70 mm to 78 mm. The firmness of the fruit flesh of the evaluated cultivars in the harvest maturity was over 7.0 kg·cm−2 but in ‘Solomiya’ and ‘Dmiana’ this indicator was 11.1 kg·cm−2. The fruits of ‘Harant’ and ‘Todes’ were distinguished by a high dry matter content (over 18%). The highest content of soluble solids (14.5%) was accumulated in the fruits of ‘Dmiana’, and the maximum amount of sugars (11.6%) in the fruit of the ‘Ornament’. The fruits of ‘Teremok’, ‘Skifs’ke Zoloto’, ‘Amulet’, ‘Edera’, ‘Perlyna Kyieva’, ‘Kateryna’ and ‘Dmiana’ were characterized by excellent taste quality based on the values of the sugar-acid index (20–25). In the fruits of ‘Kateryna’, ‘Dmiana’ and ‘Solomiya’, a stable pectin content (over 1%) was found. The fruits of ‘Harant’ accumulated a high content of ascorbic acid (11.5 mg·100 g−1 of fresh weight), while ‘Kateryna’, ‘Radohost’, ‘Solomiya’ and ‘Askol’da’ contained over 240 mg·100 g−1 of fresh weight of polyphenols. According to the complex of the quality indices, the fruits of ‘Teremok’, ‘Skifs’ke Zoloto’, ‘Perlyna Kyieva’, ‘Askol’da’ and ‘Dmiana’ were distinguished by high commercial value and excellent consumption properties. The fruits of ‘Kateryna’, ‘Ornament’, ‘Dmiana’ and ‘Solomiya’ were characterized by stable carbohydrate content, while ‘Harant’ and ‘Askol’da’ by a stable high content of ascorbic acid and polyphenols, respectively.
Field trial of antibody response to inactivated bacterial vaccine in young Holstein calves: influence of animal health status
Authors: Mori Kazusa , Otomaru Konosuke , Kato Toshihide , Yokota Osamu , Ohtsuka Hiromichi
Published: February 2022

Introduction

Bovine respiratory disease (BRD) is one of the primary causes of death in young calves. Vaccination against infection by the common bacteria causing BRD is possible; however, the physical condition of the young calves that enables antibody production when stimulated by early immunisation remains to be elucidated.

Material and Methods

Healthy young female Holstein calves on a commercial dairy farm were fed a colostrum replacer and administered primary and booster immunisations with an inactivated vaccine against the bacterial pneumonia agents Histophilus somni, Pasteurella multocida and Mannheimia haemolytica. At each immunisation, the body weight and height at the withers were measured and the body mass index (BMI) was calculated. Blood was sampled immediately before immunisation and 3 weeks following the booster. The calves were divided into positive and negative groups based on the antibody titre at the final blood sampling. Maternal antibody titres at the primary immunisation and BMI, nutritional status and oxidative stress at both immunisations were compared between the two groups.

Results

Antibody titre at the primary and BMI at both immunisations were significantly higher in the positive than in the negative group (P < 0.05). Additionally, serum gamma globulin was significantly higher in the positive group (P < 0.05), indicating a strong correlation between maternal antibody and serum gamma globulin levels.

Conclusion

Elevated maternal antibody titre and higher BMI are positive factors for successful early immunisation, for which suitable colostrum may also be fundamental in young calves administered inactivated vaccines.
Development of a real-time TaqMan PCR assay for the detection of porcine circovirus 4
Authors: Chen Wanting , Jiang Dike , Xiao Lu , Zhang Pengfei , Luo Yan , Yang Zexiao , Yao Xueping , Wang Yin , Wu Xulong
Published: February 2022

Introduction

Porcine circovirus 4 (PCV4) was first discovered in 2019 in a herd of pigs with porcine respiratory disease, dermatitis and nephropathy syndrome in Hunan Province, China. It has subsequently been detected in other provinces and in South Korea. In consideration of the potential of the virus to cause an epidemic, rapid, sensitive, and specific detection of PCV4 is needed, as is the facilitation of further epidemiological research through elucidation of the whole genome of PCV4. This study had those two aims.

Material and Methods

Fifty-five blood samples, two pig tissue samples, nine saliva swabs and one semen sample which all originated from Sichuan province pig farms were analysed. The virus’ genome of 1,770 bp was synthesised artificially based on a Chinese reference strain and primers and probes for the ORF2 gene were designed. Then, the amplified target fragment was cloned into the pMD19-T vector and a series of diluted recombinant plasmids were used to generate a standard curve. An optimised real-time TaqMan PCR method was established.

Results

The results of this study showed that the established method is specific for PCV4 but not for other viruses, and has amplification efficiency of 99.6%, a regression squared value (R2) of 1.000 and a detection limit of 2.2×10 DNA copies. This method was shown to be analytically specific and sensitive with a low intra- and inter-assay coefficient of variation (<1.67 %). Of a total of 67 clinical samples tested using the established method, three were shown to be positive (4%).

Conclusion

This study confirms the existence of PCV4 in Sichuan and provides a promising alternative tool for rapid detection of PCV4.
First Results on the Removal of Emerging Micropollutants from Municipal Centrate by Microalgae
Authors: Mezzanotte Valeria , Marazzi Francesca , Ficara Elena , Mantovani Marco , Valsecchi Sara , Cappelli Francesca
Published: February 2022

The results of a first campaign of sampling and analyses of emerging micropollutants in the influent (municipal centrate) and effluent of a pilot MBP raceway are reported. The algal population was chiefly made of Chlorella spp. and the pilot worked satisfactorily for the removal of nitrogen. 14 emerging micropollutants were analysed. Average removal efficiencies exceeding 80 % were observed for diclofenac, lamotrigine, ketoprofene, clarithromycin. For such compounds the variability of removal efficiency was also reduced, with respect to the other tested molecules, and was particularly low for diclofenac and lamotrigine. Removal efficiencies over 50 % were measured for azithromycin, metoprolol and irbesartan but with strong variability. Lower removal efficiencies were observed for amisulpride and 5-methylbenzotriazole, while for the remaining compounds the concentrations in the effluent were higher than in the influent.
On the Distribution of αp Modulo One in Quadratic Number Fields
Authors: Baier Stephan , Mazumder Dwaipayan , Technau Marc
Published: February 2022

We investigate the distribution of αp modulo one in quadratic number fields 𝕂 with class number one, where p is restricted to prime elements in the ring of integers of 𝕂. Here we improve the relevant exponent 1/4 obtained by the first- and third-named authors for imaginary quadratic number fields [On the distribution of αp modulo one in imaginary quadratic number fields with class number one, J. Théor. Nombres Bordx. 32 (2020), no. 3, 719–760]) and by the first- and second-named authors for real quadratic number fields [Diophantine approximation with prime restriction in real quadratic number fields, Math. Z. (2021)] to 7/22. This generalizes a result of Harman [Diophantine approximation with Gaussian primes, Q. J. Math. 70 (2019), no. 4, 1505–1519] who obtained the same exponent 7/22 for ℚ (i) by extending his method which gave this exponent for ℚ [On the distribution of αp modulo one. II, Proc. London Math. Soc. 72, (1996), no. 3, 241–260]. Our proof is based on an extension of Harman’s sieve method to arbitrary number fields. Moreover, we need an asymptotic evaluation of certain smooth sums over prime ideals appearing in the above-mentioned work by the first- and second-named authors, for which we use analytic properties of Hecke L-functions with Größencharacters.