bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study on Importance of Quality Function Deployment in Hospital Sector
Authors: M Krishna das , M Vinoth Kumar , VR Pramod
Published: September 2021

To sustain a healthy society, hospitals play a vital role and are considered a significant player in maintaining the happiness of the people in every nation. In this paper, an attempt has been made to highlight the importance of Quality Function Deployment (QFD) in the health care industry. QFD is a technique adopted and implemented in various industries. The primary purpose is to translate customer voice into technical language. The components of the House of Quality matrix are briefed, which can be easily understood and follow. The practicality of each component has to be studied. The implementation approach is suggested, and the outcome can be visualized as continuous improvement in customer satisfaction. The decision-makers get a clear awareness about their strengths, weaknesses, opportunities and threats (SWOT). A clear understanding of the technical correlations help the top-level managers to implement QFD in a smooth manner
Dynamic Mechanical Analysis of Hybrid Composites of Discarded Fishnet and Glass Fibre Reinforcement with Polyester Matrix
Authors: F Michael Raj , S Sahaya Elsi , M S Emina , S Freeda , A Amala Midun Minther Singh , R S Jayaram
Published: September 2021

Polyester based composites were fabricated and characterized for their tensile, morphological and dynamic mechanical properties such as storage and loss moduli as a function of temperature. The morphological attributes were characterized by scanning electron microscopy (SEM) and COSLAB microscope. The morphological investigations have revealed a uniformly distributed polyester matrix of the composites. Dynamic mechanical analysis (DMA) revealed an enhancement in the energy dissipation ability of the composite 4GF and an average storage modulus of the composite 3GF/1FN relative to the soft polyester phase. The tensile modulus and tensile strength increased up to 0.5 %, accompanied by while the strain at break remained largely unaffected. Fractured surface morphology indicates that the failure mode of the composites undergoes a switch-over from matrix-controlled shear deformation to the filler-controlled loading of the composites for specific applications. Hence, the utilization of discarded fishnet incorporated composites mitigates the problem of waste disposal.
A Study on the Joining Technology of Copper-Aluminium Composite Heat-Dissipating Components
Authors: Bian Yanfei , SHI Jian-zhou  , XIE Ming-jun  , CAI Meng
Published: September 2021

Copper-aluminium composite heat dissipation components have both the high thermal conductivity of copper and the low density of aluminium. Copper and aluminium are dissimilar materials as they have significant differences in physical and chemical properties, and hence it is not easy to weld them together. In this paper, the joining of copper to aluminium is studied by using the ultrasonic brazing technique. The results show that the copper and aluminium can be connected by ultrasonic brazing, and it is found that the bonding of the copper side interface is the weak link of the entire joint, but the joint strength can still reach 95MPa.
Objective measurement of sleep by smartphone application: comparison with actigraphy and relation to self-reported sleep
Authors: Maynard Taylor , Appleman Erica , Cronin-Golomb Alice , Neargarder Sandy
Published: September 2021

Aim: Smartphone technology is increasingly used by the public to assess sleep. Specific features of some sleep-tracking applications are comparable to actigraphy in objectively monitoring sleep. The clinical utility of smartphone apps should be investigated further to increase access to convenient means of monitoring sleep.
Methods: Smartphone and subjective sleep measures were administered to 29 community-dwelling healthy adults [aged 20-67, Mean (M) = 26.8; 18 women, 11 men], and actigraphy to 19 of them. Total sleep time (TST) and sleep efficiency were measured with actigraphy and the Sleep Time app (Azumio Inc.). Sleep diaries captured subjective TST and sleep efficiency, and the Epworth Sleepiness Scale and Pittsburgh Sleep Quality Index provided self-report data. An exit questionnaire was administered to examine app feasibility and likelihood of future use.
Results: The app significantly overestimated TST when compared to actigraphy. There was no significant difference in sleep efficiency between methodologies. There was also no significant difference between TST recorded through the app and through sleep diaries. Participants’ self-reported ease of use of the smartphone app positively correlated with likelihood of future use.
Conclusions: Based on the current findings, future research is needed to investigate the utility and feasibility of multiple smartphone applications in monitoring sleep in healthy and clinical populations.
ENERGY SAVING IN ORGANIZATION OF HEATING IN THE PRODUCTION OF BROILERS
Authors: Агафонова Ирина Владимировна
Published: September 2021

Статья посвящена значению энергосбережения в системах отопления на птицефабриках. Автором выполнено сравнение эффективности энергоснабжения бройлерного производства при применении различных систем отопления. В статье приведен сравнительный расчет генераторов тепла на газе и инфракрасных излучателей для птицефабрики, находящейся в городе Йошкар Ола.

The article is devoted to the importance of energy saving in heating systems at poultry farms. The author compares the efficiency of energy supply of broiler production when using different heating systems. The article provides a comparative calculation of gas heat generators and infrared emitters for a poultry farm located in the city of Yoshkar Ola.
CORPORATE TRAINING AS AN ELEMENT OF THE PERSONNEL MANAGEMENT SYSTEMPRINCIPLES OF MANAGING INNOVATIVE ACTIVITIES IN EDUCATION
Authors: Булавко Ольга Александровна
Published: September 2021

Рассматривается сущность, виды корпоративного обучения, значимость в системе управления персоналом предприятия.

The essence, types of corporate training, the significance in the personnel management system of the enterprise are considered.
ORGANIZATION OF PROSECUTOR'S SUPERVISION OVER THE IMPLEMENTATION OF LAWS DURING THE REGISTRATION, CONSIDERATION AND RESOLUTION OF REPORTS ON CRIMES OF EXTREMIST DIRECTIONS
Authors: Шинкарук Владимир Маркович , Фантров Павел Петрович , Соловьева Наталья Алексеевна
Published: September 2021

В статье описаны основные особенности организации прокурорского надзора за исполнением законов при приеме, регистрации и разрешении сообщений о преступлениях экстремистской направленности. Дается характеристика полномочий прокурора в контексте исполнения им законодательства о противодействии экстремизму.

The article describes the main features of the organization of prosecutorial supervision over the execution of laws when receiving, registering and resolving reports on extremist crimes. The authors describe the powers of the prosecutor in the context of his execution of the legislation on countering extremism.
BASIC DETERMINANTS CONDITIONING THE PERFORMANCE YOUTH PUBLIC CALLS FOR EXTREMIST ACTIVITIES
Authors: Фантров Павел Петрович , Шинкарук Владимир Маркович
Published: September 2021

В статье описаны основные причины, побуждающие молодежь к публичным призывам к осуществлению экстремистской деятельности. Авторы статьи выделяют следующие из них: социально-экономические, политические, идеологические и религиозные. В целях обеспечения общественной безопасности необходимо нивелирование экстремистских настроений в молодежной среде.

The article describes the reasons prompting young people to make public calls to carry out extremist activities. The authors of the article highlight the following of them: socio-economic, political, ideological and religious. In order to ensure public safety, it is necessary to level out extremist sentiments in the youth environment.
THE STUDY OF THE FACTORS DETERMINING THE OPERATIONAL EFFICIENCY OF THE SOCIO-ECONOMIC SYSTEM
Authors: Богомолова Елена Владимировна
Published: September 2021

Современные предпринимательские структуры представляют собой открытые социально-экономические системы. Деятельность такой системы определяется рядом характеристик, одной из которых является операционная эффективность. Улучшая уровень операционной эффективности социально-экономическая системы может достигнуть конкурентных преимуществ на рынке.

Modern entrepreneurial structures are open socio-economic systems. The activity of such a system is determined by a number of characteristics, one of which is operational efficiency. By improving the level of operational efficiency, the socio-economic system can achieve a competitive advantage in the market.
PRINCIPLES OF MANAGING INNOVATIVE ACTIVITIES IN EDUCATION
Authors: Туктарова Лилия Равильевна
Published: September 2021

Рассматриваются вопросы и положения инновационной деятельности в образовании, приведены основные критерии инноваций в образовании.

The issues and provisions of innovation in education are considered, the main criteria for innovation in education are given.
Verstehen verstehen. Eine Pilotstudie zur Überprüfung der Eye-Mind-Hypothese bei multimedialen Lernprozessen von Funktionen
Authors: Ohrndorf Martin
Published: September 2021

Erklärvideos spielen mittlerweile auch in schulischen Kontexten eine bedeutsame Rolle. Welche Lern- und Verstehensprozesse beim Schauen von Erklärvideos relevant sind, ist bislang jedoch noch nicht erforscht. Die vorliegende Arbeit liefert einen ersten Schritt in Richtung der Erfassbarkeit kognitiver Verstehensprozesse mittels der Untersuchung von Blickbewegungen durch die Methode des Eye-Trackings. Das Medium Erklärvideo wird zunächst in die unterrichtspsychologische Forschung eingeordnet, indem seine Rolle für schulische Lehr-Lern-Prozesse anhand von Angebots-Nutzungs-Modellen untersucht wird. Diese Einordnung schafft eine analytische Trennung zwischen dem Erklärvideo als Angebot und der Nutzung dieses Mediums durch Schüler*innen, so dass diese beiden Perspektiven empirisch untersuchbar werden. Im nächsten Schritt wird beispielhaft ein Erklärvideo aus dem Bereich Funktionen als Lernangebot untersucht. Dies geschieht auf Grundlage eines Katalogs von Qualitätskriterien zur Untersuchung von lernunterstützenden Erklärvideos, welcher unter Berücksichtigung der Cognitive Theory of Multimedia Learning und fachdidaktischen Qualitätskriterien entwickelt und begründet wird. Nachfolgend wird die Erfassbarkeit kognitiver Verstehensprozesse beim funktionalen Denken anhand einer Fallstudie zur Nutzung des Erklärvideos durchgeführt. Hierzu werden Blickbewegungen und Äußerungen des nachträglichen lauten Denkens analysiert, u.a. anhand einer Ausdifferenzierung der Anderson-Krathwohl-Taxonomie für funktionales Denken. Die vorliegende Arbeit gibt einen Einblick in die aktuelle kognitionspsychologische Forschung bezüglich Erklärvideos zum funktionalen Lernen und weist nach, dass kognitive Erinnerns- und Verstehensprozesse u.a. mittels Eye-Tracking an verschiedenen Stellen sichtbar gemacht werden können.
Effect of reaction parameters on WOx nanostructures by the solvothermal process
Authors: Olivas Sarabia Amelia , Cardoza-Contreras Marlene N , Cota Leal Marcos Alan , Sepúlveda Guzmán Selene
Published: September 2021

In this work, nanowires and nanorods of WOx have been synthesized by the solvothermal method. The effect of reaction time and acetic acid as solvent were studied. X-ray diffraction (XRD) patterns showed the monoclinic WO2.72, WO2.79, and orthorhombic WO3 crystalline structures. Scanning Electron Microscopy (SEM) and High-Resolution Transmission Electronic Microscopy (HRTEM) images presented nanostructures such as nanowires and nanorods at different sizes. Band gap energies were supplied by Ultra Violet visible (UV-vis) absorption spectra. The Photoluminescence (PL) spectra exhibited three emission peaks in the blue zone at 440, 460, and 484 nm. X-ray Photoelectron Spectroscopy (XPS) was used to calculate W6+, W5+, and W4+ oxidation states. The results showed that increasing the reaction time from 10 h to 24 h affected the crystalline structure from monoclinic to orthorhombic. Moreover, with the addition of acetic acid as solvent, the crystal structure is not affected but stabilizes the monoclinic phase in the course of time.
Detection of Covid-19 Based on Chest Medical Imaging and Artificial Intelligent Techniques: A Review
Authors: Aref Nawres , Kareem Hussain
Published: September 2021

Novel Coronavirus (Covid-2019), which first appeared in December 2019 in the Chinese city of Wuhan. It is spreading rapidly in most parts of the world and becoming a global epidemic. It is devastating, affecting public health, daily life, and the global economy. According to the statistics of the World Health Organization on August 11, the number of cases of coronavirus (Covid-2019) reached nearly 17 million, and the number of infections globally distributed among most European countries and most countries of the Asian continent, and the number of deaths from the Coronavirus reached 700 thousand people around the world. . It is necessary to detect positive cases as soon as possible in order to prevent the spread of this epidemic and quickly treat infected patients. In this paper, the current literature on the methods used to detect Covid is presented. In these studies, the research that used different techniques of artificial intelligence to detect COVID-19 was reviewed as the coevolutionary neural network (ResNet50, ResNet101, ResNet152, InceptionV3, and Inception-ResNetV2) were proposed for the identification of patients infected with coronavirus pneumonia using chest X-ray radiographs By using 5-fold cross validation, three separate binary classifications of four grades (COVID-19, normal (healthy), viral pneumonia and bacterial pneumonia) were introduced. It has been shown that the pre-trained ResNet50 model offers the highest classification performance (96.1 percent accuracy for Dataset-1, 99.5 percent accuracy for Dataset-2, and 99.7 percent accuracy for Dataset-2) based on the performance results obtained.
Chemical etymology and beyond: a relevant book review
Authors: HASİB Abdul
Published: September 2021

A review on the book discussing the etymology and the context of chemical names has been carried out. The aims, organization, chapter outlines and the readership of the book along with some other facets have been briefed. The specialty and the efficacy of the book in a teaching-learning perspective have been projected with reference to the cited literatures.
Fen bilgisi ve Sınıf öğretmenliği öğrencilerinin ısı ve sıcaklık konularındaki kimya bilgilerini günlük hayattaki olaylarla ilişkilendirebilme düzeyleri
Authors: BÜYÜKEKŞİ Cem , YAVUZ Soner
Published: September 2021

Fen bilgisi ve Sınıf öğretmenliği öğrencilerinin ısı ve sıcaklık konularındaki kimya bilgilerini günlük hayattaki olaylarla ilişkilendirebilme düzeylerini incelemek amacıyla Zonguldak Bülent Ecevit Üniversitesi Ereğli Eğitim Fakültesi 4. sınıfta öğrenim gören 13 Fen bilgisi öğretmenliği ve 40 Sınıf öğretmenliği öğrencisi ile betimsel bir araştırma yürütülmüştür. Öğrencilere ısı, sıcaklık, kaynama ve hal değişimi kavramları ile ilgili açık uçlu 6 soru yöneltilmiştir. Günlük hayatta sıklıkla karşılaşabileceğimiz örnek olaylar sunulmuştur ve bu olayların nedenlerinin açıklanması istenmiştir. Araştırma sonuçları Fen bilgisi ve Sınıf öğretmenliği öğrencilerinin kimya bilgilerini günlük hayattaki olaylarla ilişkilendirebilme düzeylerinin birbirlerine yakın olduğu ve yeterli düzeyde olmadığı gözlenmiştir.
Kimya Öğretmenlerinin; Covid-19 Sürecinde Uzaktan Eğitim Uygulamaları Hakkında Görüşleri
Authors: ZAN Nuray
Published: September 2021

Bu çalışma, Covid-19 pandemi sürecinde uzaktan eğitimde yaşanan, çevrimiçi platformdaki teknik sorunlar, kimya öğretmenlerinin veya öğrencilerin neden olduğu ve öğretmenler tarafından tespit edilen sorunları belirlemek amacıyla yapılmıştır.. Başka bir deyişle, kimya ve kimya teknolojileri alanında kadrolu öğretmen olarak devlet okullarında Milli Eğitim Bakanlığı'nda görev yapan öğretmenler, uzaktan eğitimde ders müfredatı, öğretmen-öğrenci etkileşimi veya teknolojik sıkıntılar gibi farklı sorunlar yaşamışlardır. Bu çalışmada bu sorunlar değerlendirilmiştir. Bu doğrultuda çalışmanın uzaktan eğitimde kimya dersinde yaşanan sorunların belirlenmesi, çözüm önerilerinin geliştirilmesi ve uzaktan eğitim altyapısının geliştirilmesine yardımcı olacak öneriler sunulması açısından literatüre katkı sağlaması beklenmektedir. Bu noktada çalışmanın sonuçlarının gelecek dönemlerde devam edeceği öngörülen uzaktan öğretim yöntemlerinin planlanmasında yol gösterici niteliğe sahip olduğu düşünülmektedir. Söz konusu araştırma Türkiye’nin tüm illerinde çalışan kimya öğretmenlerini temsil etme yeteneği gözönüne alınarak planlanmış çalışmaya 286 kimya öğretmeni katılmıştır.
Çalışmada kullanılan veri toplama aracı; demografik bilgilerin toplandığı giriş kısım haricinde üç ana bölümden oluşmaktadır. Birinci bölümde sorulan sorular uzaktan eğitim sistemi, öğrenci ile iletişim ve teknoloji kullanımı ile ilgilidir. İkinci bölümde; 9, 10, 11 ve 12. sınıf kimya dersi öğretim programlarının uzaktan eğitim sürecinde üniteler temelinde uygulanabilirliğini araştırmaya yönelik sorular sorulmuştur. Üçüncü bölümde, öğretmenlere uzaktan öğretim sürecinin öğretmenin gelişimine etkisi ve ders temelinde öğretmenlerin MEB’den beklentilerini belirleyen iki soru yöneltilmiştir. Çalışmada kimya ve kimya teknolojisi öğretmenlerinin uzaktan eğitim sistemi ile ilgili mevcut durumlarının belirlenmesi amacı ile yöntem olarak betimsel analiz ve içerik analizi kullanılmıştır.
ESCRITA ACADÊMICA: O ARTIGO CIENTÍFICO E SUA ORGANIZAÇÃO PASSO A PASSO
Authors: Hartmann Cassio , César Dias Lopes Gabriel , Da Silva Ferreira Vieira Fábio , V Samuel Bensson
Published: September 2021

O presente artigo, tem como objetivo mostrar o passo a passo para elaboração de projetos de pesquisa, tipos de pesquisa e  relatórios de pesquisa. Trata-se de uma pesquisa qualitativa aquela que identifica fatores relevantes de um objeto de maneira a analisar o teor de documentos ou realidades, nesse sentido foi possível fazer um levantamento e expor nessas laudas as diversas maneiras de pesquisa partindo da premissa do senso comum e concluindo que o pesquisador precisa conhecer e seguir um caminho metodológico, uma linha de raciocínio lógico e o caminho que se pretende percorrer para alcançar os referidos objetivos. Notando, ao final do processo a importância de ressaltar claramente os materiais, métodos e técnicas empregados no decorrer da elaboração de projetos e relatórios científicos.
Isochronicity of bi-centers for symmetric quartic differential systems
Authors: Fernandes Wilker , Valério Viviane Pardini , Tempesta Patricia
Published: September 2021

In this paper we investigate the simultaneous existence of isochronous centers for a family of quartic polynomial differential systems under four different types of symmetry. Firstly, we find the normal forms for the system under each type of symmetry. Next, the conditions for the existence of isochronous bi-centers are presented. Finally, we study the global phase portraits of the systems possessing isochronous bi-centers. The study shows the existence of seven non topological equivalent global phase portraits, where three of them are exclusive for quartic systems under such conditions.
Blow-up prevention by quadratic degradation in a higher-dimensional chemotaxis-growth model with indirect attractant production
Authors: Xie Jianing
Published: September 2021

This paper deals with a boundary-value problem in three-dimensional smoothly bounded domains for a coupled chemotaxis-growth system generalizing the prototype

   \begin{document}$\begin{align} \left\{\begin{array}{ll} u_t = \Delta u-\nabla\cdot(u\nabla v)+\mu u(1-u),\quad x\in \Omega, t>0,\\ { }{ v_t = \Delta v- v +w},\quad x\in \Omega, t>0,\\ { }{\tau w_t+\delta w = u},\quad x\in \Omega, t>0\\ \end{array}\right. \end{align} (*)$ \end{document}

in a smoothly bounded domain \begin{document}$ \Omega\subset\mathbb{R}^N(N\geq1) $\end{document} under zero-flux boundary conditions, which describe the spread and aggregative behavior of the Mountain Pine Beetle in forest habitat, where the parameters \begin{document}$ \mu $\end{document} as well as \begin{document}$ \delta $\end{document} and \begin{document}$ \tau $\end{document} are positive. Based on an new energy-type argument combined with maximal Sobolev regularity theory, it is proved that global classical solutions exist whenever

   \begin{document}$ \mu>\left\{ \begin{array}{ll} {0, \; \; \; {\rm{if}}\; \; N\leq4},\\ {\frac{(N-4)_{+}}{N-2}\max\{1,\lambda_{0}\},\; \; \; {\rm{if}}\; \; N\geq5}\\ \end{array} \right. $\end{document}

and the initial data \begin{document}$ (u_0,v_0,w_0) $\end{document} are sufficiently regular. Here \begin{document}$ \lambda_0 $\end{document} is a positive constant which is corresponding to the maximal Sobolev regularity. This extends some recent results by several authors.
Chaotic switching in driven-dissipative Bose-Hubbard dimers: When a flip bifurcation meets a T-point in $ \mathbb{R}^4 $
Authors: Giraldo Andrus , Broderick Neil G. R. , Krauskopf Bernd
Published: September 2021

The Bose-Hubbard dimer model is a celebrated fundamental quantum mechanical model that accounts for the dynamics of bosons at two interacting sites. It has been realized experimentally by two coupled, driven and lossy photonic crystal nanocavities, which are optical devices that operate with only a few hundred photons due to their extremely small size. Our work focuses on characterizing the different dynamics that arise in the semiclassical approximation of such driven-dissipative photonic Bose-Hubbard dimers. Mathematically, this system is a four-dimensional autonomous vector field that describes two specific coupled oscillators, where both the amplitude and the phase are important. We perform a bifurcation analysis of this system to identify regions of different behavior as the pump power \begin{document}$ f $\end{document} and the detuning \begin{document}$ \delta $\end{document} of the driving signal are varied, for the case of fixed positive coupling. The bifurcation diagram in the \begin{document}$ (f, \delta) $\end{document}-plane is organized by two points of codimension-two bifurcations——a \begin{document}$ \mathbb{Z}_2 $\end{document}-equivariant homoclinic flip bifurcation and a Bykov T-point——and provides a roadmap for the observable dynamics, including different types of chaotic behavior. To illustrate the overall structure and different accumulation processes of bifurcation curves and associated regions, our bifurcation analysis is complemented by the computation of kneading invariants and of maximum Lyapunov exponents in the \begin{document}$ (f, \delta) $\end{document}-plane. The bifurcation diagram displays a menagerie of dynamical behavior and offers insights into the theory of global bifurcations in a four-dimensional phase space, including novel bifurcation phenomena such as degenerate singular heteroclinic cycles.
On solvability of some $ p $-Laplacian boundary value problems with Caputo fractional derivative
Authors: Li Xiaoping ,   School of Mathematics and Imformation Science, Xiangnan University, Chenzhou, 423000, Hunan, China, Chen Dexin ,   Department of Civil and Environmental Engineering, University of Alberta, Edmonton, T6G 2W2, Alberta, Canada
Published: September 2021

The solvability of some $ p $-Laplace boundary value problems with Caputo fractional derivative are discussed. By using the fixed-point theory and analysis techniques, some existence results of one or three non-negative solutions are obtained. Two examples showed that the conditions used in this paper are somewhat easy to check.
Pullback random attractors of stochastic strongly damped wave equations with variable delays on unbounded domains
Authors: Yang Li ,   School of Mathematics, Shandong University, Jinan, Shandong 250100, China
Published: September 2021

In this paper, we consider the asymptotic behavior of solutions to stochastic strongly damped wave equations with variable delays on unbounded domains, which is driven by both additive noise and deterministic non-autonomous forcing. We first establish a continuous cocycle for the equations. Then we prove asymptotic compactness of the cocycle by tail-estimates and a decomposition technique of solutions. Finally, we obtain the existence of a tempered pullback random attractor.
Classification of nonnegative solutions to fractional Schrödinger-Hatree-Maxwell type system
Authors: Liu Yaqiong ,   School of Mathematics and Computer Science, Jiangxi Science and Technology Normal University, Nanchang 330038, China, Li Yunting , Liao Qiuping , Yi Yunhui
Published: September 2021

In this paper, we are concerned with the fractional Schrödinger-Hatree-Maxwell type system. We derive the forms of the nonnegative solution and classify nonlinearities by appling a variant (for nonlocal nonlinearity) of the direct moving spheres method for fractional Laplacians. The main ingredients are the variants (for nonlocal nonlinearity) of the maximum principles, i.e., narrow region principle (Theorem 2.3).
Modelling chaotic dynamical attractor with fractal-fractional differential operators
Authors: Jain Sonal ,   Department of Mathematical Sciences, UAE University, P.O. Box 15551, Al-Ain, UAE, El-Khatib Youssef
Published: September 2021

Differential operators based on convolution have been recognized as powerful mathematical operators able to depict and capture chaotic behaviors, especially those that are not able to be depicted using classical differential and integral operators. While these differential operators have being applied with great success in many fields of science, especially in the case of dynamical system, we have to confess that they were not able depict some chaotic behaviors, especially those with additionally similar patterns. To solve this issue new class of differential and integral operators were proposed and applied in few problems. In this paper, we aim to depict chaotic behavior using the newly defined differential and integral operators with fractional order and fractal dimension. Additionally we introduced a new chaotic operators with strange attractors. Several simulations have been conducted and illustrations of the results are provided to show the efficiency of the models.
Pringsheim and statistical convergence for double sequences on $ L- $fuzzy normed space
Authors: Yapalı Reha ,   Department of Mathematics, Muş Alparslan University, Muş, Turkey, Gürdal Utku ,   Department of Mathematics, Burdur Mehmet Âkif Ersoy University, Burdur, Turkey
Published: September 2021

In this paper, we study the concept of statistical convergence for double sequences on $ L- $fuzzy normed spaces. Then we give a useful characterization on the statistical convergence of double sequences with respect to their convergence in the classical sense and we illustrate that our method of convergence is weaker than the usual convergence for double sequences on $ L- $fuzzy normed spaces.
On the neighbor-distinguishing in generalized Petersen graphs
Authors: Naqvi Shabbar ,   Department of Basic Sciences, Balochistan University of Engineering and Technology Khuzdar, 89100, Pakistan, Salman Muhammad , Ehtisham Muhammad , Fazil Muhammad , Rehman Masood Ur ,   Department of Mathematics, The Islamia University of Bahawalpur, 63100, Pakistan,   Department of Mathematics and Statistics, Institute of Southern Punjab Multan, 60800, Pakistan,   Department of Basic Sciences and Humanities, Bahauddin Zakariya University Multan, 60800, Pakistan,   Department of Mathematics, University College of Zhob, BUITEMS, Zhob 85200, Pakistan
Published: September 2021

In a connected graph $ G $, two adjacent vertices are said to be neighbors of each other. A vertex $ v $ adjacently distinguishes a pair $ (x, y) $ of two neighbors in $ G $ if the number of edges in $ v $-$ x $ geodesic and the number of edges in $ v $-$ y $ geodesic differ by one. A set $ S $ of vertices of $ G $ is a neighbor-distinguishing set for $ G $ if every two neighbors in $ G $ are adjacently distinguished by some element of $ S $. In this paper, we consider two families of generalized Petersen graphs and distinguish every two neighbors in these graphs by investigating their minimum neighbor-distinguishing sets, which are of coordinately two.
Oscillation of arbitrary-order derivatives of solutions to the higher order non-homogeneous linear differential equations taking small functions in the unit disc
Authors: Gong Pan ,   School of Mathematics and Computer Science, Shangrao Normal University, Shangrao Jiangxi 334001, China, Xu Hong Yan
Published: September 2021

In this article, we study the relationship between solutions and their arbitrary-order derivatives of the higher order non-homogeneous linear differential equation

   \begin{document}$ \begin{equation*} f^{(k)}+A_{k-1}(z)f^{(k-1)}+\cdots+A_{1}(z)f'+A_{0}(z)f = F(z) \end{equation*} $\end{document}

in the unit disc $ \bigtriangleup $ with analytic or meromorphic coefficients of finite $ [p, q] $-order. We obtain some oscillation theorems for $ f^{(j)}(z)-\varphi(z) $, where $ f $ is a solution and $ \varphi(z) $ is a small function.
A fractal hypernetwork model with good controllability
Authors: Ma Xiujuan ,   School of Computer, Qinghai Normal University, Xining, 810008, China, Ma Fuxiang , Yin Jun ,   The State Key Laboratory of Tibetan Information Processing and Application, Xining, 810008, China
Published: September 2021

Fractal is a common feature of many deterministic complex networks. The complex networks with fractal features have interesting structure and good performance. The network based on hypergraph is named hypernetwork. In this paper, we construct a hypernetwork model with fractal properties, and obtain its topological properties. Moreover, according to the exact controllability theory, we obtain the node controllability and the hyperedge controllability of the fractal hypernetwork. The simulation results show that the measure of hyperedge controllability is smaller than that of node in the fractal hypernetwork. In addition, We compare the controllability of three types of hypernetwork, which are easier to control by their hyperedges. It is shown the fractal hypernetwork constructed in this paper has the best controllability. Because of the good controllability of our fractal hypernetwork model, it is suitable for the topology structure of many real systems.
Localizando trabajadores del conocimiento en grandes regiones urbanas: un análisis integrado de las trayectorias personales y los factores de atracción y retención en Madrid
Authors: Moreno David , Sánchez-Moral Simón , Díez-Pisonero Roberto
Published: September 2021

La atracción y retención de los trabajadores del conocimiento son considerados vectores fundamentales para el desarrollo urbano. Esto explica el interés por comprender las fuerzas que guían la localización de estos trabajadores y las bases del atractivo de las principales ciudades. Esta investigación parte del esquema interpretativo de estudios previos a nivel europeo y busca analizar las trayectorias y los motivos de los trabajadores del conocimiento para localizarse en la región de Madrid, a partir de la realización de una encuesta online ad hoc. Los resultados confirman la importancia para los recién llegados de los factores hard, relacionados con las oportunidades de empleo, por encima de factores soft, relacionados con la disponibilidad de urban amenities y los estilos de vida, que parecen influir en la retención de algunos individuos, especialmente de aquellos que más tiempo llevan en la región. A ello contribuyen también factores network, como las redes familiares y profesionales. Todo ello tiene implicaciones para las políticas urbanas.
Operation of Microgrid and Control Strategies
Authors: Veeraganti Suma Deepthi , Nittala Ramchandra
Published: September 2021

Microgrids are the most innovative area in the electric power industry today. A microgrid can operate in grid-connected or islanded mode. In islanded mode, microgrids can provide electricity to the rural areas with lower cost and minimum power losses. Several methods have been proposed in the literature for the successful operation of a microgrid. This chapter presents an overview of the major challenges and their possible solutions for planning, operation, and control of islanded operation of a microgrid. Microgrids are the most innovative area in the electric power industry today. Moreover, microgrids provide local voltage and frequency regulation support and improve reliability and power capacity of the grid. The most popular among the control strategies based on droop characteristics, in addition a central controller is described within a hierarchical control scheme to optimize the operation of the microgrid during interconnected operation. Microgrid control methods, including PQ control, droop control, voltage/frequency control, and current control methods are formulated.
Operation and Control of Microgrid
Authors: M. Maheswari , S. Gunasekharan
Published: September 2021

The demand for electricity is increasing day by day due to technological advancements. According to the demand, the size of the grid is also increasing rapidly in the past decade. However, the traditional centralized power grid has many drawbacks such as high operating cost, customer satisfaction, less reliability, and security. Distribution generation has less pollution, high energy efficiency, and flexible installation than traditional generation. It also improves the performance of the grid in peak load and reliability of supply. The concept of micro-grid has been raised due to the advent of new technologies and development of the power electronics and modern control theory. Micro-grid is the significant part of the distribution network in the future of smart grid, which has advanced and flexible operation and control pattern, and integrates distributed clean energy.
Artifical Intelligence and CRM
Authors: Dixit Shailja
Published: September 2021

Disruptive technologies such as IoT, big data analytics, blockchain, and AI have changed the ways businesses operate, with AI holding immense marketing transformation potential. AI is influencing marketing strategies, business models, sales processes, customer service options, and customer behaviors. AI-CRM's improving ability to predict customer lifetime value will generate an inevitable rise in implementing adapted treatment of customers, leading to greater customer prioritization and service discrimination in markets. CSPs are working through the challenging process of digital transformation, driven by the need to compete with fast-moving OTT and consumer tech players. CSPs need to move quickly and can advance digital transformation with solutions that leverage AI which can drive value across the business from network optimization and data analytics through to customer care and marketing engagement. The chapter tries to identify how AI is impacting the CRM in the telecom industry and leveraging the benefits of this technology for better customer management and growth.
AI and Customer Experience in the Fashion Industry
Authors: Kaur Jasmandeep , Singh Surabhi , Singh Ramanjeet
Published: September 2021

This chapter portrays artificial intelligence with the improvement of customer experience on online and offline fashion purchases. The presence of AI in the retail business is turning into a vital part of the customer experience. AI attempts to disclose approaches to interpret with the end goal for organizations to make a genuine use out of them, either online or offline. Thus, with this research, the authors additionally give knowledge on how this experience of AI could be improved in later fashion purchases and how it will undoubtedly be part of the everyday customer experience.
A Systematic Literature Review on 30 Years of Empirical Research on Information Systems Business Value
Authors: Ahad ZareRavasan  , Krčál Michal
Published: September 2021

Information Systems Business Value (ISBV) has been a key research topic for the IS research community. While the vast majority of ISBV research demonstrates the positive relationship between IS and firm performance, the fundamental question of the causal relationships between IS and business value remains partly unexplained. Moreover, researchers do not share a unified understanding of ISBV concepts. Therefore, this research intends to synthesize the past 30 years of empirical ISBV research, identify the gaps and shortcomings, conceptualize the ISBV concepts, and propose possibilities for further research that will widen the current narrowly shared ISBV bottom line. We aim to synthesize (1) different operationalization of concepts in existing ISBV research; (2) IS determinants, consequences, and the relations among the variables; (3) the role of contextual factors; and (4) the adopted theoretical views.
Biostratigraphy of Baghamshah Formation based on calcareous nannofossils in the Southwest Tabas, Iran
Authors: Bordbar Azadeh , Hadavi Fatemeh , Ghaderi Abbas , Notghi Moghaddam Marziyeh
Published: September 2021

The Tabas Block is part of the Central Iran microcontinent, located between the Lut Block in the East and the Yazd Block in the West. The Baghamshah Formation is the second lithostratigraphic unit from the sedimentary cycle of the Magu Group and the Baghamshah Subgroup in the Jurassic of Tabas Block. This formation is conformably underlaid with the grey pisoidal limestones of the Parvadeh Formation and overlaid with the Pectinid limestones of the Kamar-e-Mehdi Formation (Esfandiar Subgroup). In this research, the biostratigraphy of the Baghamshah Formation in the Rizu and Kamar-e-Mehdi sections, based on calcareous nannofossils, is examined. The thickness of the Baghamshah Formation in the Rizu section is 270 m (mostly including marl and green shales with intercalation of limestones and calcareous sandstones), and in the Kamar-e- Mehdi section is 236 m (composed of gypsiferous marly shales, marl, marly shales and alternation of marl-shale with limestones and calcareous sandstones). According to the taxonomic studies in the Rizu section, 52 species belong to 24 genera, and in the Kamar-e-Mehdi section, 45 species belong to 23 genera of calcareous nannofossils. Based on index calcareous nannofossils, the CC1, CC2, CC3, and CC4 biozones established by Sissinghh in both sections were determined. It is mentioned that CC5 biozone only occur in Kamar-e-Mehdi section. According to the identified biozones, the suggested age of the Baghamshah Formation is early Berriasian–early Hauterivian in the Rizu section, and early Berriasian–late Hauterivian in the Kamar-e-Mehdi section. Keywords: biostratigraphy, Baghamshah, calcareous nannofossils,Tabas, Iran.
Upper Pleistocene–Holocene in the continental slope of the Cará Basin: an integrated analysis based on planktic foraminifera, sedimentological and geochemical aspects
Authors: Noucoucouk Agathe Arrissa , Melo Robbyson Mendes , Freire George Satander Sá , Menor Eldemar de Albuquerque
Published: September 2021

This research addresses paleoclimatic variations using sedimentological, geochemical, and planktic foraminifera. The study was carried out in a survey core (ANP 1011) collected on the continental slope of the Icaraí Sub-basin (Ceará Basin), on the coast of the Municipality of Itapipoca, CE, Brazil. Particle size analysis, CaCO3 content, Ti/Ca and Fe/Ca ratios, and the analysis of foraminifera associations for biostratigraphic purposes were performed. Based on the relative abundance of planktic foraminifera, with indicators of warm and cold water throughout the studied cores, two biozones (Y: Upper Pleistocene and Z: Holocene), and two subzones (Z2 and Z1) were recognized. The data of sedimentological markers obtained confirmed the occurrence of more wet phases in northeastern Brazil during the early stages of the Holocene. The Ti/Ca and Fe/Ca ratios, as well as the geochemical and micropaleontological proxies, indicated a farther north displacement of the Intertropical Convergence Zone (ITCZ) in the Pleistocene–Holocene transition. This may have caused greater precipitation in the Northeastern region of Brazil, effectuating the entry of a high volume of terrestrial sediments directly into the ocean basin. Keywords: Quaternary biostratigraphy, marine sedimentation, ITCZ mobility, paleoclimate.
Gastropods from the Solimões Formation (upper Miocene), Acre Basin, Brazil
Authors: Sousa Felipe Nascimento , Marques Rodrigo Cesar , Ribeiro Victor Rodrigues , Gaia Geovane Augusto , Guilherme Edson , Maciente Andréa , Souza-Filho Jonas Pereira de , Hsiou Annie Schmaltz , Ghilardi Renato Pirani
Published: September 2021

A taxonomic review of Miocene gastropods from the Solimões Formation, Acre Basin, Brazil, from specimens collected at Cachoeira do Bandeira, Oriente, and an outcrop named Spot 04, is here presented. Three ampullariid species (Pomacea maculata, P.planorbula, Pomacea sp.), one thiarid species (Aylacostoma sp.), and one cochliopid species (Sioliella sp.) are identified for these deposits. These gastropod are known to occur in freshwaters environments, thus consolidating the hypothesis of a non-influence of brackish water on the upper Miocene deposits of the Acre Basin. The previous identification of P. maculata and Aylacostoma sp. is changed here considering biometrical analyses and shell morphological descriptions. The first report of Sioliella in this basin increases the gastropod fauna known for these strata and expands the range of this genus. Keywords: Pomacea, Aylacostoma, Sioliella, Ampullariidae, Thiaridae, Cochliopidae.
Mesosaur taxonomy reappraisal: are Stereosternum and Brazilosaurus valid taxa?
Authors: Piñeiro Graciela , Ferigolo Jorge , Mones Alvaro , Núñez Demarco Pablo
Published: September 2021

Mesosaurs are basal amniotes that lived at the beginning of the Permian or close to the Permo–Carboniferous boundary. Despite the several hundred specimens that have been found, including complete skeletons of adult and juvenile individuals, mesosaur taxonomy has been subjected to a high controversy over time. Currently, three monotypic genera, Mesosaurus tenuidens Gervais, Stereosternum tumidum Cope, and Brazilosaurus sanpauloensis Shikama & Ozaki are recognized, but identification of new specimens using the available diagnostic characters are arbitrary and influenced by high subjectivity. We performed anatomical and morphometric analyses to look for statistical support to these previously suggested basic diagnostic characters through an exhaustive anatomical revision of these characters and also of some new attributes discovered during the course of our study. We found a notable influence of taphonomic features in most of the diagnostic characters used to differentiate the three monotypic genera, including strong bias derived from the preservation of individuals in different ontogenetic stages, whose size and degree of ossification could have been controlled by particular environmental conditions that resulted in subtle polymorphisms of these and other few characters. Other features may even represent sexual dimorphism. After the detailed revision of the type specimens of the three currently accepted mesosaur taxa, for which we include here good-quality photographs, and considering the lack of statistical support for the most applied putative diagnostic features such as the different ratio found when comparing skull and cervical region lengths and the low or higher intensity of pachyosteosclerosis observed in dorsal ribs, which can be controlled by taphonomic and ecological conditions, we recognize Mesosaurus as the only mesosaurid taxon in the Paraná and Karoo basins, probably including dwarf individuals. Therefore, S.tumidum and B. sanpauloensis are suggested here as nomina dubia taking into account that the autapomorphies that supported these taxa cannot be confirmed to be absent in Mesosaurus. Keywords: Mesosaurus, morphometrics, taxonomy, ?Early Permian, Gondwana.
New Cingulata (Mammalia, Xenarthra) from the Upper Lumbrera Formation (Bartonian, middle Eocene), Salta Province, Argentina
Authors: Herrera Claudia , Esteban Graciela , Garcia-Lopez Daniel Alfredo , Deraco Virginia , Babot Judith , del Papa Cecilia , Bertelli Sara , Giannini Norberto
Published: September 2021

We describe isolated remains of a Paleogene cingulate from El Simbolar locality, Upper Lumbrera Formation (Bartonian), southern Salta Province, northwestern Argentina. The material consists of numerous fixed, movable, and caudal sheath osteoderms. The specimen has large-sized osteoderms, with a lageniform main figure, as in Utaetus buccatus, U. laxus, U. argos, ?U. deustus, Punatherium catamarcensis, and the basal euphractin Archaeutatus. The combination of morphological characters, in addition to its large size, allows us to recognize a new species of “Utaetini” for the Paleogene of northwestern Argentina. This new species of ?Utaetus represents the oldest record of Euphractinae in this region, and strengthens the endemic condition of its Paleogene faunas. Keywords: Cingulata, osteoderms, El Simbolar, Paleogene, Salta, Argentina.
Palinologia de turfas do alto curso do Arroio Cará, Coxilha Rica, Santa Catarina, Brasil
Authors: Perin Edenir Bagio , Primam Gisele Leite de Lima , Oliveira Marcelo Accioly Teixeira de
Published: September 2021

Palynology of peaty sediments from the high course of Cará Brook Creek, Coxilha Rica, Santa Catarina, Brazil. This paper presents the results of the palynological study of a sedimentary core collected in a bog in the upper part valley of Cará Brook Creek, in the cultural territory of Coxilha Rica, located in the Campos Gerais Plateau in Santa Catarina, Southern Brazil. The base of the core was dated in 6.900 14C years BP (7,845–7,690 cal years BP). The identification of the palynomorphs and the cluster analysis made possible to define two distinct palynological phases, despite the predominance of grassland vegetation throughout the whole core. From 34 cm, the frequency of bryophytes decreases, accompanied by the increase of the diversity of all vegetal taxa. Throughout the core, the most frequent families are Poaceae, Cyperaceae Apiaceae. The results indicate that the landscape of the upper course of the Brook Creek was characterized by grasslands from 6,900 14C years BP under a regional and humid climate, with a temperature increase in the historical period. Keywords: Middle Holocene, palynomorphs, grasslands, Araucaria forest, Highland.
Динамическое образование массы Планка и темной энергии в аффинной гравитации
Authors: Kharuk Ivan Vyacheslavovich
Published: September 2021

Представлена новая модель аффинной гравитации, в рамках которой реализуется безмасштабный сценарий. В этой модели масса Планка и постоянная Хаббла возникают динамически, вследствие спонтанного нарушения масштабной инвариантности. Это естественным образом приводит к инфляции, тем самым вводится новый инфляционный механизм. Более того, направление времени и невырожденная метрика также возникают динамически, что позволяет рассматривать обычную общую теорию относительности как эффективную теорию. Показано, что введенная модель феноменологически непротиворечива как с точки зрения прямых проверок теории гравитации, так и с точки зрения космологической эволюции.