bluuebunny/crossref_metadata_2025 huggingface dataset:
Behcet’s disease (Silk Road disease): a rare inflammatory disease
Authors: Babu Leya P , George Shaji , V Babu Johnson , Robin Nimmy , Jose Joicy
Published: January 2022

Background: Behcet’s disease (Silk Road disease), a rare immune-mediated multisystem inflammatory disorder described by intermittent oralaphthae and genital ulcer, backsliding uveitis, mucocutaneous, articular, gastrointestinal, neurological and vascular manifestations, with no cure.It is brought about by changes in the: a) arteries that flexibly blood to the body tissues b) veins that return the blood to the lungs, the rear of the eyes retina, brain, joints, skin and bowels.

Case Presentation: A 55-year-old male patient was sensed with c/o joint agony in lower appendages, oral ulcer and scrotal ulcer. On physical assessment the patient was cognizant and oriented with B/L lower leg joint emanation. All lab examination including RA factor was within normal limits, with diminished Serum Vitamin D. HLA B51, ANA were checked and oral mucosal biopsy was done. The most punctual sign exhibited was oral disintegration, various shallow ulcer and scarcely any dissolved knobs in the scrotum. At that point the patient gave joint pain and numbness on right leg. On neurological assessment, a strange motor nerve conduction saw with right tibial neuropathy. At first, doubt with syphilis and tarsal tunnel disorder and following 7-8 days of affirmation, analyzed as Behcet's illness dependent on dermatological, rheumatologic and neurological signs. Treatment given was symptomatic and supportive with pain relievers, corticosteroid, antibiotics, IV fluids, PPI, vitamin supplement, laxative and local anaesthetic.

Discussion:Without adequate data it's difficult to examine, in light of anomaly and standardized treatment are questionable at present. New information with respect to its immunopathogenesis, genetics will significantly help in the advancement of research center tests, diagnostic criteria and particularly in the decision of the best treatment
Fatty acid composition of drinking cow's milk trade networks of Kyiv
Authors: DANCHUK Vyacheslav , MIDYK Svitlana , USHKALOV Valerii , IAKUBCHAK Olga , HRYSHCHUK Ihor , DAVYDOVSKA Liliana
Published: January 2022

Introduction. There are several important aspects requiring a control of fatty acid composition in drinking milk distributed across the retail stores: milk is one of the main consumer products; fatty acids are the main energy substrates, involved in the synthesis of cellular structural components, whereas their interaction might impact the intensity of body growth and development; the fatty acid composition of milk varies depending on the diet and the animal's specific physiological state; in case of udder diseases, a change milk composition may occur; prevention of product counterfeiting distributed across  the retail stores.

Material and methods. The present research examined milk samples from five dairy producers that distribute their products across the retailing chains in Kyiv. Milk samples were collected to determine the fatty acid composition. Milk fat was extracted following the Folch method. The milk fatty acid content assessment was carried out by gas chromatography.

Results. 20 fatty acids were identified in the tested milk samples. A higher level of saturated fatty acids was recorded in milk from "Ferma" and "Selyanskoye for kids" dairy producers. The highest content of unsaturated fatty acids was registered in products of “Ukrainskoe” and “Molokia” dairy trademarks.

Conclusions. The fatty acid composition of the drinking cow’s milk distributed across trading networks in Kiev was found to be heterogeneous, by differing in the content of both long-chain saturated fatty acids and unsaturated fatty acids.
Cyclic dynamic patterns of Russian macroeconomic indicators found by spectral analysis
Authors: Vinogradova Olga , Krupkina Anna , Pierpoint Kseniya , Kokosinskii Denis
Published: January 2022

The paper proposes a contemporary interdisciplinary method to identify consistent patterns within cyclical dynamics of GDP and its macroeconomics determinants in the Russian Federation. This method may contribute to better recognition of the stages of economic cycle and of potential early predicators to recessions and crises. We first identify the trend component of Russian GDP and then apply the spectral data analysis to its cyclical component which reveals its multi-frequency, and non-linear vibrations. These vibrations are then further investigated by transforming time series data on GDP and its determinants into a frequency spectrum series via Fourier transform techniques. Wavelength scanning of selected macroeconomic indicators shows the basic economic cycle of real GDP with duration time of approx. 3.13 years. Other procyclical indicators nevertheless discover asynchronous behavior towards GDP due to the relative autonomy of the sectors standing behind these indicators. Their autonomy lies behind differences in reaction forces (shifts) and periods (lags) to both internal and external shocks. We estimate differentials between the dynamics of GDP and its determinants by evaluating phase deviations of their pairwise harmonic components, mutual pairwise phase shifts, and by comparison of their pairwise cross-spectrum. The one of output is the quantification of time lags between GDP and key macroeconomic indicators of individual economic sectors. This result reveals the complexity of GDP dynamics that sends an aliased rather than a unit signal to economic agents. Our decomposition of this signal into signals from key economic sectors and quantification of phase discrepancies between sectoral signals may contribute to findings in early crisis predicators. We also estimate the depth and velocity of shocks penetrations into both economy as a whole and its particular sectors.
The concept of sustainable mobility: theory and practice
Authors: Komarov Vladimir , Akimova Varvara
Published: January 2022

The article analyzes the theoretical foundations of the concept of sustainable mobility within the framework of its three key components. It shows that the problem of transport sustainability is holistic and interdisciplinary and is considered within environmental, urbanistic and transport approaches that complement each other and offer conceptually close solutions for modern urban development. The article discusses the main directions of sustainable mobility, laid down in strategic planning documents of foreign countries. The paper also provides examples of the implementation of the principles of sustainable mobility in the strategies of socio-economic development of Russia’s cities and regions developed by the authors. Population surveys conducted by the authors in Russian cities as part of the development of these strategic planning documents show that about 95% of the population prefer sustainable transport policy tools that have proven themselves useful in many cities around the world. The analysis concludes with the recommendations for Russia's transition to the «sustainable transport» paradigm.
The higher education and the sphere of labor in digital economy: a new mechanism of interaction
Authors: Voshchikova Natalia
Published: January 2022

This article explores the concept of macroeconomic stability originated from the theory of general economic equilibrium (GEE) by L. Walras. Modern macroeconomic models that do not contradict the GEE, a implement the principles of consistency of micro- and macroeconomic analysis, the interrelation of markets, and the effectiveness of market mechanism. Economic fluctuations generated by shocks are in dialectical unity with the state of equilibrium. The aim of macroeconomic policy is to maintain equilibrium (macroeconomic stability) through inflation targeting and effective public debt management. Within the framework of this policy a number of goals are met including the control over inflationary expectations, strengthening confidence in the central bank, and overcoming inflation. However, low inflation rates can produce liquidity traps, thus causing a need to adjust monetary policy and develop its new instruments. At the same time, the global crises of the 21st century, the Great Recession of 2008 and the COVID-19 pandemic, prompts to re-evaluate the contradictions between the theoretical concept of equilibrium and the real state of the economy, as well as measures needed to stabilize it during a recession. The policy of overcoming the crisis in 2020 includes large-scale discretionary fiscal and monetary stimulus according to Keynesian recipes, in the absence of which the loss of jobs, closure of enterprises, and lack of financial stability are inevitable. The gap between theory and reality, as it happened during the Great Depression almost a hundred years ago, once again raises the questions of further development of macroeconomics. The article may be of interest to teachers and students interested in the prospects for the development of scientific knowledge in this area.
Key stakeholders of the urban planning design market and their preferences when choosing a design company
Authors: Amiantov Sergey , Buzulukova Ekaterina
Published: January 2022

The article examines the interests and concerns of various groups of stakeholders in the urban planning design market influencing the choice of a contractor. The selected market is characterized by a significant decision magnitude, usually involves many groups of stakeholders, and often determines the long-term development of cities. The aim of the article is to identify the interests of key stakeholders in urban planning design market, factors that are significant for the selected groups of stakeholders when choosing a contractor, and to provide recommendations for promotional strategy for the considered groups of customers. The theoretical review identifies more than 150 factors that influence the choice of a contractor on b2b market, they are further divided according to the underlying principles of choosing a partner from decision-maker’s viewpoint. Based on the interviews conducted, we determine the main groups of stakeholders who influence or are influenced by the urban planning design decisions. The field study revealed significant differences in preferences among various groups of stakeholders of project organizations: developers, authorities, other project bureaus, real estate owners, management companies. The preferences also differ based on the size of the company. As a result, we have developed recommendations for dealing with different groups of stakeholders based on the identified preferences, decision-makers, as well as possible directions of a company’s differentiation. The structure of the article consists of the theoretical overview of previously conducted research of factors influencing the contractor choice in the industrial markets and finding ways to harmonize the interests of different stakeholders, after that the field research has been done of experts and decision-makers of choosing a proper partner in the planning design market. Finally, the authors offer recommendations that can focus the marketing strategy of project design companies in the urban planning industry. The article would be of interest not only for companies in the urban planning design market but also for all companies in the industrial market that face the contradictory interests of various groups of stakeholders.
Evaluación del potencial funcional de una bebida a base de guanábana con extractos sábila (Aloe vera) y moringa (Moringa oleífera)
Authors: Cambisaca Poveda Carmen Cecilia , Martínez Valenzuela Gustavo Elías , Cantillo Holguín Génesis Nathaly
Published: January 2022

Los alimentos funcionales se refieren a aquellos alimentos procesados, los cuales contienen ingredientes que desempeñan una función específica en los procesos fisiológicos del organismo más allá de la nutrición. El objetivo de este trabajo fue determinar la capacidad funcional de una bebida a base de guanábana, sábila y moringa. Se emplearon dos factores de estudio: mezclas de materias primas y tiempos de infusión de la moringa. La acidez fue 0,4 % y pH 5,5 en cada uno de los tratamientos; los STD variaron de 2,98 (T3) a 3,18 °Brix (T1). Las formulaciones de mayor contenido de polifenoles fueron T3 (37 %) y T4 (44 %); en vitamina C ambas formulaciones tuvieron 33.32 mg/ml. El tratamiento de mayor aceptación sensorial fue T4 (sábila 10%; guanábana 20% e infusión de moringa 70% a 70 °C por 20 min). Los resultados del análisis microbiológico permitieron estimar el tiempo de vida en 30 días.
Neurodidáctica y estilos de aprendizaje en las aulas: orientaciones para docentes
Authors: Sotelo-Martín José-Alberto
Published: January 2022

El presente artículo busca mostrar el cambio que acontece en las aulas a partir de la personalización en educación. La metodología utilizada fue documental, con un procedimiento de revisión bibliográfica en bases de datos relevantes y actualizadas, bajo los principios de simplicidad, relevancia, orden y saturación de la información, y tomó como objetivo orientar al docente sobre algunos de los factores de la neurociencia, junto con la unificación de la información básica sobre los modelos más actuales de estilos de aprendizaje. De la revisión se concluye que la neurodidáctica se condensa, en parte, en los modelos de aprendizaje, e influye en la práctica cotidiana en las aulas, generando una personalización didáctica más provechosa.
Comunidades de aprendizaje y actuaciones educativas de éxito en contextos interculturales
Authors: Campoverde-Vega Diana Piedad
Published: January 2022

Este artículo tiene como motivación principal la preocupación humanística por contribuir en la construcción de una educación intercultural e inclusiva para el Ecuador. Concretamente, el objetivo planteado es una propuesta de innovación educativa basada en la transformación de los centros educativos ecuatorianos en comunidades de aprendizaje a partir de la implementación de actuaciones educativas de éxito (AEE). Está sustentado en una investigación documental y una hermenéutica crítica de los planteamientos alrededor del tema. Los resultados se muestran en la construcción de los fundamentos conceptuales de las estrategias que comprenden las AEE, tales como: interacciones dialógicas, grupos interactivos, tertulias dialógicas y, por supuesto, las comunidades de aprendizaje (CDA). Como resultado de todo este proceso, se procede en la última parte del texto, a la presentación de la propuesta, que, aunque se deja sin ejecución por los momentos, está previsto que contribuya a la transformación socioeducativa del contexto institucional, tomado como referencia empírica.
Evaluación de la percepción de los estudiantes de educación básica sobre la Universidad Nacional de Frontera
Authors: Cabrera Torres Antero Alexander , Ríos-Campos Carlos , Ticona Carrizales Lucio , Camacho Delgado Freddy Manuel , Reyes Alva Rocío del Pilar , Maza Riojas Juan Alberto
Published: January 2022

El presente trabajo tuvo como objetivo principal determinar la percepción de los estudiantes de educación básica regular de las instituciones educativas públicas y privadas del norte del Perú sobre la Universidad Nacional de Frontera; para ello se trabajó con el total de la población muestra que aparece matriculada en el año académico 2019, siendo un total de 579 estudiantes. El estudio fue de tipo exploratorio descriptivo; el diseño de investigación utilizado es no experimental y transversal (en el tiempo). Para la medición de la variable percepción estudiantil se utilizó como instrumento de medición un cuestionario conformado por 10 ítems que permitió medir la variable. Para el análisis de datos se empleó el análisis descriptivo; se determinó que la evaluación de percepción de los estudiantes de educación básica regular de las diferentes instituciones educativas del norte del Perú, con respecto a la Universidad Nacional de Frontera, es buena con 68.2%. En este sentido, la universidad debe aplicar su diagnóstico organizacional, con miras a consolidarse como institución educativa de referencia en el norte del Perú.
Clima organizacional en una institución escolar del Perú
Authors: Chuquihuanca Yacsahuanca Nelson , Fernández Mantilla Mirtha Mercedes , Lecca Reyes Luis Nelson , Estrada Gaibor Silvia Verónica , Morales Naranjo Adriana del Consuelo , Herrera Oblea Milton Fredy , Campoverde Nieves Gerardo Ronald
Published: January 2022

El clima organizacional en una institución es la base esencial para el buen desempeño de un colaborador, ya que las buenas relaciones interpersonales incidirán para generar un ambiente cálido y de mutuo acuerdo. El presente estudio tuvo como objetivo determinar la relación del clima organizacional en el desempeño académico de los docentes. La metodología se centra en el enfoque cuantitativo, diseño descriptivo correlacional. La muestra estuvo constituida por 100 docentes de la I.E. José María Raygada Gallo, Querecotillo - Perú. Para la recolección de datos se aplicó una encuesta. Entre los resultados encontrados se halló que existe una relación moderada, con un 0,520, con grado de significancia de ƿ = 0,520. Se concluye que un adecuado clima organizacional generará colaboradores eficaces y, en consecuencia, un adecuado desempeño de los docentes.
Spontaneous Magnetic Fluctuations and Collisionless Regulation of Turbulence in the Earth’s Magnetotail
Authors: Espinoza C. M. , Moya P. S. , Stepanova M. , Valdivia J. A. , Navarro R. E.
Published: January 2022

Among the fundamental and most challenging problems of laboratory, space, and astrophysical plasma physics is to understand the relaxation processes of nearly collisionless plasmas toward quasi-stationary states and the resultant states of electromagnetic plasma turbulence. Recently, it has been argued that solar wind plasma β and temperature anisotropy observations may be regulated by kinetic instabilities such as the ion cyclotron, mirror, electron cyclotron, and firehose instabilities; and it has been argued that magnetic fluctuation observations are consistent with the predictions of the fluctuation–dissipation theorem, even far below the kinetic instability thresholds. Here, using in situ magnetic field and plasma measurements by the THEMIS satellite mission, we show that such regulation seems to occur also in the Earth’s magnetotail plasma sheet at the ion and electron scales. Regardless of the clear differences between the solar wind and the magnetotail environments, our results indicate that spontaneous fluctuations and their collisionless regulation are fundamental features of space and astrophysical plasmas, thereby suggesting the processes is universal.
Proposals for improvement of Annex I of Directive 92/43/EEC: Central Italy
Authors: Casavecchia Simona , Allegrezza Marina , Angiolini Claudia , Biondi Edoardo , Bonini Federica , Del Vico Eva , Fanfarillo Emanuele , Foggi Bruno , Gigante Daniela , Gianguzzi Lorenzo , Lasen Cesare , Maccherini Simona , Mariotti Mauro , Pesaresi Simone , Pirone Gianfranco , Poldini Livio , Selvi Federico , Venanzoni Roberto , Viciani Daniele , Vidali Marisa , Ciaschetti Giampiero
Published: January 2022

The main purpose of the 92/43/EEC Habitats Directive is to contribute to the conservation of biodiversity, understood as habitat types and species of the flora and fauna of the European Union. To achieve this goal, natural and semi-natural biodiversity as a whole must be recognized and included in its annexes. As for the conservation of biotopes, named habitat types, Italy is unfortunately lacking as it the Annex I does not include important ecosystems that are typical of its territory, rare for biogeographical reasons or threatened. Therefore, the opportunity to identify a first list of significant habitats for central Italy is discussed here. For each of the new proposed types (new habitats or new subtypes) a sheet has been prepared to highlight their salient characteristics. The new proposals concern seven habitat types and one subtype: sedge and reeds formations (Freshwater large sedge and reed beds), willow shrublands (Shrubby willow formations of river banks and fens), Apennine garrigues (Apennine hilly and montane garrigues), a new subtype of Annex I Habitat 6130 (Communities of herbaceous and dwarf shrub-suffrutescent plants of Italian ultramafic substrates), ancient olive groves ("Centuries-old olive groves" with evergreen Quercus spp. and arborescent matorral), secondary meadows (Italian submontane and montane pastured meadows dominated by Cynosurus cristatus), badlands (Pioneer halophilous and sub-halophilous communities of “calanchi” and “biancane” badlands) and hop-hornbeam woods (Italian-Balkan hop-hornbeam woods).
Non-recours au diagnostic et aux soins dans le cas de la maladie d’Alzheimer
Authors: Warin Philippe , Gucher Catherine , Alvarez Stéphane
Published: January 2022

La prévalence de la maladie d’Alzheimer et ses conséquences psychologiques et sociales questionnent l’accès au bilan préventif, au diagnostic, voire aux traitements médicamenteux, aux soins de support spécialisés et aux aides à la vie quotidienne qui peuvent être proposés aux personnes. Dans le cadre d’un appel à projet de la fondation Plan Alzheimer, nous avons cherché à comprendre les motifs du recours aléatoire et peu généralisé à cette « offre de soins », dans le cas d’une maladie qui affecte autant les personnes malades que leur entourage. L’enquête qualitative auprès d’un panel de 38 personnes présentant des signes évocateurs d’une maladie neurodégénérative a permis d’analyser la manière dont ces personnes s’emparent ou se détournent de l’offre qui leur est dédiée. Elle met en évidence l’importance des trajectoires de vie et le poids des interactions familiales et professionnelles, complétant ainsi l’analyse générale du phénomène de non-recours. Son principal résultat est de souligner l’importance de la « non-adhésion » comme principale explication de la non-demande intentionnelle.
Les centres sociaux favorables aux recours des retraités : le cas de l’Île-de-France
Authors: Blanchet Mickaël
Published: January 2022

Depuis une douzaine d’années, la Cnav Île-de-France et l’Union francilienne des centres sociaux et socioculturels sont associées autour de plusieurs enjeux. L’examen géographique, lors du 1 er semestre 2018, d’un de ces enjeux – l’information et l’orientation des retraités – représentait une double opportunité : celle d’appréhender les freins au recours des retraités aux droits et aux services ainsi que les leviers en sa faveur, et celle de repositionner les centres sociaux dans les systèmes d’acteurs gérontologiques territorialisés. Outre des modalités de recours des retraités aux centres sociaux hétérogènes, les recherches montrent que le (non-) recours en tant qu’enjeu politique comme la place des centres sociaux dans l’action gérontologique restent peu formalisés. Cette absence de formalisation s’explique par une inadéquation, en termes de définition, de reconnaissance organisationnelle et de moyens, entre les savoir-faire des centres sociaux et les normes biomédicales des politiques de la vieillesse.
Necessary and sufficient conditions on weighted multilinear fractional integral inequality
Authors: Zhou Yongliang , Deng Yangkendi , Wu Di , Yan Dunyan
Published: January 2022

We consider certain kinds of weighted multi-linear fractional integral inequalities which can be regarded as extensions of the Hardy-Littlewood-Sobolev inequality. For a particular case, we characterize the sufficient and necessary conditions which ensure that the corresponding inequality holds. For the general case, we give some sufficient conditions and necessary conditions, respectively.
Self-similar blow-up patterns for a reaction-diffusion equation with weighted reaction in general dimension
Authors: Iagar Razvan Gabriel , Muñoz Ana Isabel , Sánchez Ariel
Published: January 2022

We classify the finite time blow-up profiles for the following reaction-diffusion equation with unbounded weight:

   \begin{document}$ \partial_tu = \Delta u^m+|x|^{\sigma}u^p, $\end{document}

posed in any space dimension \begin{document}$ x\in \mathbb{R}^N $\end{document}, \begin{document}$ t\geq0 $\end{document} and with exponents \begin{document}$ m>1 $\end{document}, \begin{document}$ p\in(0, 1) $\end{document} and \begin{document}$ \sigma>2(1-p)/(m-1) $\end{document}. We prove that blow-up profiles in backward self-similar form exist for the indicated range of parameters, showing thus that the unbounded weight has a strong influence on the dynamics of the equation, merging with the nonlinear reaction in order to produce finite time blow-up. We also prove that all the blow-up profiles are compactly supported and might present two different types of interface behavior and three different possible good behaviors near the origin, with direct influence on the blow-up behavior of the solutions. We classify all these profiles with respect to these different local behaviors depending on the magnitude of \begin{document}$ \sigma $\end{document}. This paper generalizes in dimension \begin{document}$ N>1 $\end{document} previous results by the authors in dimension \begin{document}$ N = 1 $\end{document} and also includes some finer classification of the profiles for \begin{document}$ \sigma $\end{document} large that is new even in dimension \begin{document}$ N = 1 $\end{document}.
Inertial manifolds for parabolic differential equations: The fully nonautonomous case
Authors: Huy Nguyen Thieu , Xuan Pham Truong , Ha Vu Thi Ngoc , Ha Vu Thi Thuy
Published: January 2022

We study the existence of an inertial manifold for the solutions to fully non-autonomous parabolic differential equation of the form

   \begin{document}$ \dfrac{du}{dt} + A(t)u(t) = f(t,u),\, t> s. $\end{document}

We prove the existence of such an inertial manifold in the case that the family of linear partial differential operators \begin{document}$ (A(t))_{t\in { \mathbb {R}}} $\end{document} generates an evolution family \begin{document}$ (U(t,s))_{t\ge s} $\end{document} satisfying certain dichotomy estimates, and the nonlinear forcing term \begin{document}$ f(t,x) $\end{document} satisfies the Lipschitz condition such that certain dichotomy gap condition holds.
Higher P-symmetric Ekeland-Hofer capacities
Authors: Shi Kun , Lu Guangcun
Published: January 2022

This paper is devoted to the construction of analogues of higher Ekeland-Hofer symplectic capacities for \begin{document}$ P $\end{document}-symmetric subsets in the standard symplectic space \begin{document}$ (\mathbb{R}^{2n},\omega_0) $\end{document}, which is motivated by Long and Dong's study about \begin{document}$ P $\end{document}-symmetric closed characteristics on \begin{document}$ P $\end{document}-symmetric convex bodies. We study the relationship between these capacities and other capacities, and give some computation examples. Moreover, we also define higher real symmetric Ekeland-Hofer capacities as a complement of Jin and the second named author's recent study of the real symmetric analogue about the first Ekeland-Hofer capacity.
Existence of solutions for a class of quasilinear Schrödinger equation with a Kirchhoff-type
Authors: Hu Die , Tang Xianhua , Zhang Qi
Published: January 2022

In this paper, we discuss the generalized quasilinear Schrödinger equation with Kirchhoff-type:

   \begin{document}$\left (1\!+\!b\int_{\mathbb{R}^{3}}g^{2}(u)|\nabla u|^{2} dx \right) \left[-\mathrm{div} \left(g^{2}(u)\nabla u\right)\!+\!g(u)g'(u)|\nabla u|^{2}\right] \!+\!V(x)u\! = \!f( u),(\rm P)$ \end{document}

where \begin{document}$ b>0 $\end{document} is a parameter, \begin{document}$ g\in \mathbb{C}^{1}(\mathbb{R},\mathbb{R}^{+}) $\end{document}, \begin{document}$ V\in \mathbb{C}^{1}(\mathbb{R}^3,\mathbb{R}) $\end{document} and \begin{document}$ f\in \mathbb{C}(\mathbb{R},\mathbb{R}) $\end{document}. Under some "Berestycki-Lions type assumptions" on the nonlinearity \begin{document}$ f $\end{document} which are almost necessary, we prove that problem \begin{document}$ (\rm P) $\end{document} has a nontrivial solution \begin{document}$ \bar{u}\in H^{1}(\mathbb{R}^{3}) $\end{document} such that \begin{document}$ \bar{v} = G(\bar{u}) $\end{document} is a ground state solution of the following problem

   \begin{document}$-\left(1+b\int_{\mathbb{R}^{3}} |\nabla v|^{2} dx \right) \triangle v+V(x)\frac{G^{-1}(v)}{g(G^{-1}(v))} = \frac{f(G^{-1}(v))}{g(G^{-1}(v))},(\rm \bar{P})$ \end{document}

where \begin{document}$ G(t): = \int_{0}^{t} g(s) ds $\end{document}. We also give a minimax characterization for the ground state solution \begin{document}$ \bar{v} $\end{document}.
Asymptotic analysis for the electric field concentration with geometry of the core-shell structure
Authors: Zhao Zhiwen
Published: January 2022

In the perfect conductivity problem arising from composites, the electric field may become arbitrarily large as \begin{document}$ \varepsilon $\end{document}, the distance between the inclusions and the matrix boundary, tends to zero. In this paper, by making clear the singular role of the blow-up factor \begin{document}$ Q[\varphi] $\end{document} introduced in [27] for some special boundary data of even function type with \begin{document}$ k $\end{document}-order growth, we prove the optimality of the blow-up rate in the presence of \begin{document}$ m $\end{document}-convex inclusions close to touching the matrix boundary in all dimensions. Finally, we give closer analysis in terms of the singular behavior of the concentrated field for eccentric and concentric core-shell geometries with circular and spherical boundaries from the practical application angle.
The lifetime analysis of the Weibull model based on Generalized Type-I progressive hybrid censoring schemes
Authors: Nagy M. ,   Department of Statistics and Operation Research, Faculty of Science, King Saud University, KSA, Alrasheedi Adel Fahad
Published: January 2022

In this study, we estimate the unknown parameters, reliability, and hazard functions using a generalized Type-I progressive hybrid censoring sample from a Weibull distribution. Maximum likelihood (ML) and Bayesian estimates are calculated using a choice of prior distributions and loss functions, including squared error, general entropy, and LINEX. Unobserved failure point and interval Bayesian predictions, as well as a future progressive censored sample, are also developed. Finally, we run some simulation tests for the Bayesian approach and numerical example on real data sets using the MCMC algorithm.
EVALUATION OF PV POWERED SWITCHABLE GLAZING TECHNOLOGIES IN TERMS OF THEIR SUITABILITY FOR OFFICE WINDOWS IN MODERATE CLIMATES
Authors: Marchwiński Janusz
Published: January 2022

In the search for façade solutions that meet requirements for energy efficiency and office space use comfort, it seems promising to apply a combination of photovoltaic (PV) technology with switchable glazing. It is believed that the merging of these two technologies might benefit the cooperation between regulated solar protection and energy efficiency. This article provides a design outlook on the use of PV-EC, PV-SPD, and PV-LCD technologies in terms of their utility for office buildings in moderate climates. This study concerns thermal, optical-visual, energetic, and technical issues, and a comparative method was applied. Based on current scientific research, the results of the analysis were juxtaposed with the requirements of the office working environment: natural lighting, thermal protection, glare protection, privacy control, energy efficiency, and technical reliability. The juxtaposition of these aspects revealed the advantages and disadvantages of a given solution from an architectural point of view. PV-EC technology in a side-by-side system was found to be the most appropriate solution and the results may be applied to make preliminary design decisions.
L’atelier de Vicus Gemellae : motifs, styles décoratifs et guillochis
Authors: Nasr Mongi
Published: January 2022

Il est actuellement admis que Sidi Aïch est de loin le plus important des ateliers de céramique dits « continentaux », tant au niveau de la production et sa diversification qu’au niveau de l’aire de diffusion de ses produits. Nos investigations sur cet atelier, entamées il y a déjà trois décennies, ont abouti, entre autres, à l’édification de typologies et de catalogues propres aux différentes productions, notamment la vaisselle de table, la céramique culinaire, les lampes et la décoration (motifs, styles décoratifs et guillochis). Cette dernière, sujet de la présente communication, quoiqu’elle imite celle des productions « classiques », s’en démarque par un certain nombre de traits distinctifs comme la taille des motifs et leur disposition et l’originalité de quelques styles décoratifs. Ces caractéristiques esthétiques et techniques rendent les produits de cet atelier aisément reconnaissables. Chronologiquement, cette décoration se répand durant la phase de l’apogée de la production située au cours des ive et ve siècles.
Auteur et autorité, tradition et révélation : études de cas des magies gréco-égyptienne et chrétienne copte
Authors: Dosoo Korshi
Published: January 2022

La créativité des pratiques rituelles des traditions magiques gréco-égyptienne et chrétienne se présente de façon constante et paradoxale comme étant fondée sur une connaissance ancienne et éternelle, transmise de la sphère divine au domaine humain, soit de façon temporelle par une série de « figures de mémoire », soit au travers d’une distance ontologique, par révélation divine directe. Cette étude explore les tensions et les contradictions de ces deux sources de « tradition » à travers deux études de cas, la « liturgie mithriaque » et la « Prière de Marie à Bartos » : ces deux textes rituels se présentent comme l’héritage d’un passé ancien, implicitement plus divin, et promettent aussi un accès direct au divin dans le présent.
La réécriture des rituels d’invocation des esprits dans les traditions latines attribuées à Salomon (xiie-xve siècle)
Authors: Véronèse Julien
Published: January 2022

Les traditions latines de magie rituelle attribuées à Salomon, loin d’avoir une forme stable, sont l’objet de réécritures permanentes au fil des copies de manuscrits. À l’aide de deux exemples mieux documentés que les autres, celui de l’Ars notoria d’une part, celui de l’Almandal d’autre part, nous pouvons suivre les principales dynamiques à l’œuvre, qu’il s’agisse d’accroître le nombre de signes considérés comme performatifs, de simplifier une tradition jugée trop complexe, ou encore de christianiser des arts unanimement condamnés par les autorités ecclésiastiques. Tradition, innovation et autorité se rencontrent ainsi à différents niveaux.
Proof that Einstein’s field equations are invalid: Exposition of the unimodular defect
Authors: Crothers Stephen J.
Published: January 2022

Albert Einstein first presented his gravitational field equations in unimodular coordinates. In these coordinates, the field equations can be written explicitly in terms of the Einstein pseudotensor for the energy-momentum of the gravitational field. Since this pseudotensor produces,
by contraction, a first-order intrinsic differential invariant, it violates the laws of pure mathematics. This is sufficient to prove that Einstein’s unimodular field equations are invalid. Since the unimodular form must hold in the general theory of relativity, it follows that the latter
is also physically and mathematically unsound, lacking a proper mathematical foundation.
Inconsistency of time-symmetry model
Authors: Šorli Amrit S. , Čelan Štefan
Published: January 2022

Can physical objects be in time-symmetry? Physical objects can only exist in a medium that has physical attributes, which means this medium is a type of energy. Is time energy? This article will show that time is not energy, and there is no possibility that physical objects could be
in time-symmetry. Physical objects can only be in symmetry in the time-invariant space, in which they exist. In this perspective, time measured with clocks is the result of the observer’s measurement in the time-invariant space. The time-symmetry model is flawed.
Strong/nuclear force in the dynamic medium of reference (DMR) theory. Nuclear deflection of light, nuclear time delay of light, and proposed experiment
Authors: Pignard Olivier
Published: January 2022

The theory of the dynamic medium of reference has already been presented in several articles [Pignard, Phys. Essays 32, 422 (2019); 33, 395 (2020); 34, 61 (2021); 34, 279 (2021)], and in particular in Pignard, Phys. Essays 32, 422 (2019). The article
[Pignard, Phys. Essays 34, 279 (2021)] gives an explanation and mathematical developments of the gravitational acceleration from atomic nuclei of a massive body. General relativity considers a massive body, like the Earth or the Sun, globally, macroscopically, simply as an object of
mass M (which curves space‐time). However, when one goes into details, this mass M is made up of atoms which are themselves mainly made up of nuclei of nucleons (if we neglect the mass of electrons in comparison of that of the nucleus). Thus, it is mainly the nuclei of a massive
body that create the force of gravity! The dynamic medium of reference theory determines the gravitational acceleration microscopically by taking into account all the atomic nuclei that make up a massive body [Pignard, Phys. Essays 32, 422 (2019)]. This creates a strong link
between gravity and the nuclear domain. This article goes further with the description of a model of the atomic nucleus. This makes it possible to establish that the strong force or nuclear force, which ensures the cohesion of the nucleus, is due to the strong acceleration of the flux
of the medium which is a vector average of the flux of gravitons. This gives an expression of the nuclear force similar to the force of gravity but with a constant K ≈ 1031 m s−2, much higher than the gravitational constant G. This article shows that
the functioning, the mechanism of the nucleus, makes it possible to explain the nuclear force and also to find the gravitational acceleration. From there, it is deduced that the photons are deflected by the strong acceleration due to an atom nucleus. They are also slowed down by an atom nucleus
which creates a delay in their travel time which we call the nuclear time delay of light. Finally, an experiment is proposed to verify the phenomenon of nuclear deflection of light and the nuclear time delay of light.
The expression E = h × f is misleading because it implies the distribution of a photon quantum over 299 792 458 m, while the expression E = (h × c)/λ
enables us to explain the particle-wave duality
Authors: Ziefle Reiner Georg
Published: January 2022

The two equations E = h × f and E = (h × c)/λ for the quantum of energy of electromagnetic radiation provide the same result but describe electromagnetic radiation very differently. E = (h
× c)/λ describes the quantum of energy of electromagnetic radiation to be located already in one wavelength and therefore like a particle. E = h × f describes the quantum of energy distributed over 299 792 458 m
and therefore like a wave. To obtain h × f for the quantum of energy, we have to refer the quantum of energy to 299 792 458 m. Only then we obtain from E = (h × c)/(299 792 458
m), as the distance of 299 792 458 m of the velocity c is cancelling out now, E = h × 1/s = h × Hz, which is the precondition to obtain the correct value for the quantum of energy
by multiplying Planck’s constant h by the frequency f. This already indicates the necessity of today's physics to have to speak of a particle-wave duality. It turns out that electromagnetic radiation consists of the first wavelength that carries the quantum of energy and
behaves like a particle, which today is called “photon,” and a few following wavelengths that do not carry a further quantum of energy and behave like a wave, which today is called “electromagnetic wave.” By this knowledge, the particle-wave duality vanishes, and we
obtain one single physical phenomenon, which I call “photon-wave.” The strange behavior of quantum objects at a single slit, at double-slits, and at beam splitters can now be understood in a causal way. “God does not play dice!” Einstein was right.
Analysis on the Road Traffic Congestion in Colombo Metropolitan Area
Authors: Dammulla R. , Mudunkotuwa R.
Published: January 2022

The main focus of this study is aimed at understanding the factors causing traffic congestion in Colombo Metropolitan Area. Therefore, the study was carried out to address major research questions as, what factors affecting the current vehicle traffic flow, followed by what are the impacts of traffic congestion and what is the opportunity cost of time and fuel wastage cost of congestion. The main objective of the research was to identify the factors affecting the current vehicle traffic flow in Colombo, while the specific objectives of the research are to identify the impacts of traffic congestion, to estimate the opportunity cost of time and fuel wastage cost and to identify whether the commuters are satisfied with the strategies implemented by the government to mitigate traffic congestion. Accordingly, from the survey conducted for the commuters, the researcher identified factors such as “Growth of population and vehicles”, “Unforeseen circumstances”, “Events and incidents” has an individual effect on the current vehicle traffic flow. In addition to that the researcher identified the main impacts of traffic congestion as “Time”, “Fuel”, “Earnings” and “Productivity”. And also the esearcher identified that majority of the commuters are satisfied with the Bus Priority Lane and Park and Ride, while majority of the commuters neither satisfied nor dissatisfied with the Ferry Service as a strategy implemented to mitigate traffic congestion.
Commuters Perception Towards The Bus Base Park and Ride Implementation in Colombo City Limit
Authors: Perera M. K. S. , Waidyasekara V. , Dissanayake S.
Published: January 2022

This study was conducted to identify the commuter‟s perception towards the bus base Park and Ride implementation in Colombo city limit. This study analyses the factors that commuters would consider when selecting park and ride system for their travel purpose. For the researcher to achieve the aforementioned objectives, the conceptual framework was structured based on secondary data which congregated by existing publications and articles. The research questionnaire was developed in order to gather primary data through google forms. Simple random sampling technique was used to distribute the questionnaire among the commuters who use seven corridors to enter Colombo city limit. Three hundred fifty-two responses were taken into consideration and analysis was done by taking them into one data base. The reliability of the collected data was analysed using Cronbach‟s alpha. The KMO test statistic for sample adequacy. Moreover, factor analysis was created based on the Principal Component Analysis by extracting 3 factors from the 22 Variables, the total amount of variance accounted, redistributed over the three extracted factors, renamed using Component Score Coefficient Matrix. Kruskal-Wallis Test was conducted for hypothesis testing and binary logistics analysis was conducted to identify the association of factors and for create a model. As per the Kruskal-Wallis test, author has found that most of the demographic variables were impacted to the commuter‟s perception toward the bus base PnR system. Mean values of the 22 variables were concluded that bus frequency, travel time and safety and security of PnR system were mostly influenced for selection of PnR system. Out of the extracted factors, service attribute and travel influences were having positive association toward the commuters ‟perception on PnR choice while comfortability factor was insignificant. As per the research findings, the overall commuters” perception on PnR can be concluded as strong positive perception.
Flood Early Warning and Prediction System for Tributary Streams
Authors: Panapitiya P. K. D. C. R. , Dhammearatchi D. , Perera R.
Published: January 2022

Flood Early Warning system development is relatively new and costly area for developing countries, though it has captured attention of the respective parties since such Early Warning System can avoid loss of lives and reduce property damages from floods. Rather than standalone early warning system, warning system with the ability to forecast or predict flood events is more useful for the relevant stake holders where it can be used to plan and act fast. Geological areas around tributary streams are more likely to flood without considerable warnings from the nature as it highly depends on the main river behavior. This system uses Internet of Things (IoT) devices for data capture and transfer. River Water level, Rain status and the Water flow rate (discharge rate) is measured using Sensors. An Artificial Neural Network (ANN) is trained with collected data and integrated with live data feed in order to predict the water level. By doing so forecasting flood events according to the current readings. Notifications are sent via pre-defined notification channels. Due to the higher number of data types considered, ANN predicts water level with considerable accuracy. This collective approach of using ANN and IoT devices has made the forecasting easier and more reliable while using more variables made the predictions more accurate. In addition, these collected data can be used in the future for disaster recovery and mitigation planning since they are kept in cloud environment where public can access.
Impact of Recruitment and Selection on Performance of Primary School Teachers in ABC International School
Authors: Kurukulaarachchi V. K. N.
Published: January 2022

Enhancement of Private Education in Sri Lanka is becoming acceptable and provides more opportunities for students and teachers. Primary Education has been always the foundation of the individuals’ life. Therefore, in order to provide effective learning teaching process recruitment and selection of teachers is an integral part of a school since this leads to performance of teachers. Objective of the study is to examine the impact of the recruitment, selection process on performance of Primary School Teachers. It is mainly a quantitative study and complemented with the qualitative data. Population of the study was primary school teachers in headquarters and sample of the study size is hundred primary school teachers. Questionnaire, interviews documentary analysis were used as data collection instruments. Responses given by the teachers to see the level of performance indicated that highest level of performance positioned as averaged (47 per cent). Some Recruitment methods in ABC schools are newspaper advertisement, internal advertisement, internet advertisement, recruitment agencies, head hunting, transfer and promotion and transfer and retrenchment. School uses combination of recruitment methods to attract most suitable and qualified candidates rather than rely on one method. The study revealed that teachers impression about recruitment practices in the school and 61.5% have mentioned recruitment practice is effective, 14.6% have believed it was non-effective, 9.4 and 14.6% have responded the practice was poor and bias respectively. Further there was no statistically significant relationship between level of performance and recruitment methods. The study concluded that teachers’ performances were in averaged category and the recruitment and selection have association with performance of primary school teachers. However, the impact of recruitment and selection on performance of primary school teachers is low.