bluuebunny/crossref_metadata_2025 huggingface dataset:
Probing Dark Low-mass Halos and Primordial Black Holes with Frequency-dependent Gravitational Lensing Dispersions of Gravitational Waves
Authors: Oguri Masamune , Takahashi Ryuichi
Published: September 2020

We explore the possibility of using amplitude and phase fluctuations of gravitational waves due to gravitational lensing as a probe of the small-scale matter power spectrum. The direct measurement of the small-scale matter power spectrum is made possible by making use of the frequency dependence of such gravitational lensing dispersions originating from the wave optics nature of the propagation of gravitational waves. We first study the small-scale behavior of the matter power spectrum in detail taking the so-called halo model approach, including the effects of baryons and subhalos. We find that the matter power spectrum at the wavenumber k ∼ 106
hMpc−1 is mainly determined by the abundance of dark low-mass halos with mass

and is relatively insensitive to baryonic effects. The matter power spectrum at this wavenumber is probed by gravitational lensing dispersions of gravitational waves at frequencies of f ∼ 0.1–1 Hz with predicted signals of

. We also find that primordial black holes (PBHs) with M
PBH ≳ 0.1 M
⊙ can significantly enhance the matter power spectrum at k ≳ 105
hMpc−1 due to both the enhanced halo formation and the shot noise from PBHs. We find that gravitational lensing dispersions at f ∼ 10–100 Hz are particularly sensitive to PBHs and can be enhanced by more than an order of magnitude depending on the mass and abundance of PBHs.
« Comment osez-vous ? »
Authors: Thunberg Greta
Published: September 2020

À l’initiative des grèves pour le climat qui ont mobilisé lycéens et collégiens à travers le monde dès l’été 2018, Greta Thunberg est apparue comme un fer de lance de la révolte de la jeunesse contre l’inaction des puissants auxquels elle a pu s’adresser du haut de leurs tribunes. Son discours à l’ONU restera comme un étendard de la lutte en cours pour la justice climatique .
Les luttes écosociales des indigènes en Amérique latine
Authors: Löwy Michael
Published: September 2020

En s’opposant à l’agro-négoce et aux multinationales extractivistes, les communautés indigènes sont à la pointe du combat en défense de la forêt naturelle, des rivières et de l’environnement en général. La culture, le mode de vie, le langage des peuples indigènes d’Amérique latine ont passablement marqué le discours et les revendications des mouvements sociaux et écologistes, des Forums sociaux et des réseaux altermondialistes. Si, dans les pays à forte population indigène, les gouvernements se proclamant de gauche ont assumé, dans une certaine mesure, la vision cosmoécologique indigène, force est de constater qu’ils ont continué de suivre un modèle de développement extractiviste.
Laisser le pétrole sous terre
Authors: Le Quang Matthieu
Published: September 2020

Laisser le pétrole sous terre. Cette revendication de nombreuses organisations écologistes dans le monde pour lutter contre les émissions de gaz à effet de serre a été reprise par le gouvernement équatorien en mai 2007 pour en faire une des politiques publiques les plus innovantes contre le réchauffement climatique. Cette politique était complexe à mettre en œuvre, d’autant plus dans un pays dont l’économie dépend de l’exploitation et de l’exportation du pétrole, mais aussi à cause du mode de financement qui la livrait à la bonne volonté des autres États, principalement du Nord.
Luttes autochtones au Canada
Authors: Bonhomme Marc
Published: September 2020

Une flambée de barrages a éclaté au Canada au début de 2020 pour contrer la construction d’un gazoduc traversant des terres autochtones en Colombie britannique. Elle a ravivé des luttes de vieille date de communautés qui auraient pu être rejointes, dans leur combat, par tous ceux et celles qui se mobilisèrent massivement quelques mois plus tôt pour la défense du climat. Mais cette quasi-coïncidence des mobilisations ne s’est guère traduite par leur conjonction, alors que d’évidence l’objet de récrimination récurrent des premières nations, l’exploitation de combustibles fossiles, fait figure de principal responsable du réchauffement climatique.
Lettre aux Gilets jaunes
Authors: Rozenholc Anita , Dessendier Emmanuel
Published: September 2020

Repartant de l’analyse faite dans notre précédent numéro du mouvement des Gilets jaunes 1 , Anita Rozenholc y ajoute une clé de lecture « spinoziste ». L’autrice fait le pari que celle-ci, en ancrant la réflexion dans le vécu des Gilets jaunes, est de nature à emmener le plus grand nombre sur les voies de l’écologie politique, celles que dessinent Murray Bookchin, André Gorz, Félix Guattari ou encore Ivan Illich.
Vers une confédération internationale de communes
Authors: Romero Floréal , Gerber Vincent
Published: September 2020

Face à une société capitaliste qui court à sa perte en sapant le monde du vivant, l’éclosion d’une pensée économique et politique autre s’avère plus que jamais nécessaire. À travers le communalisme, l’écologiste et anarchiste Murray Bookchin augure d’une société organisée en démocratie directe par des assemblées populaires communales. Mais derrière le localisme affiché, c’est bien une réactualisation du modèle politique confédéral à grande échelle dont il est question .
Partir des besoins à partir d’André Gorz
Authors: Gianinazzi Willy
Published: September 2020

Le livre de Razmig Keucheyan sur les « besoins artificiels » et sur la façon de s’en passer mérite plus qu’une recension : il invite à la discussion et a toute sa place dans cette rubrique dédiée aux études « gorziennes ». En partant des travaux d’André Gorz et d’Ágnes Heller qui ont pour socle les prémisses théoriques de Karl Marx, il fournit un cadre détaillé des formes d’aliénation, mais aussi des nouveaux besoins et revendications que suscite la croissance, c’est-à-dire la mainmise du capitalisme sur la consommation .
Le deuil des corps disparus dans la communauté afro-colombienne au Nord Chocó
Authors: Castillo Grandas Angela Maria
Published: September 2020

Ce travail de recherche qualitative exploratoire, réalisé dans le cadre du diplôme universitaire « Médecines et Soins transculturels » de l’Université de Bordeaux, a pour objectif d’investiguer la façon dont les communautés afro-colombiennes du Chocó réalisent des rituels de mort lorsqu’il n’y a pas de corps. Nous avons mené des entretiens semi-structurés avec cinq femmes afro-colombiennes. Les thèmes suivants ressortent particulièrement des entretiens : la situation au Chocó après l’accord de paix avec les FARC ; les massacres, la disparition et les croyances sur la mort ; la bonne mort où comment faire son deuil sans avoir vu le corps ; la transformation du sens des rites mortuaires en raison de la guerre. Nous constatons que la guerre modifie le travail de deuil et l’essence de la personne.
La transition énergétique de la Chine est-elle soutenable ? Une analyse centrée sur l’absorption du surplus de travail
Authors: Berthaud Pierre , Fontana Yann
Published: September 2020

La transition énergétique chinoise s'opère depuis 2010 sur un fond de transition économique. La relation entre ces deux processus est appréhendée ici par un cadre d’analyse de changement structurel à la Lewis. Le mode de développement mis en œuvre par la Chine jusqu’à la fin des années 2000 a certes été très impactant pour l’environnement, mais il a aussi mis en place des conditions favorables à une transition énergétique ambitieuse, en résorbant le surplus de travail agricole. Cette absorption constitue une condition nécessaire quoique non suffisante à la réussite du processus de transition.
Urbanisme et transition énergétique à Hong Kong
Authors: Douay Nicolas
Published: September 2020

Cet article interroge l’émergence de la transition énergétique comme nouveau référentiel des politiques urbaines hongkongaises dans le cadre de politiques qui visent un urbanisme intelligent, durable et résilient. À partir du cas du projet urbain de Kowloon East, qui est présenté comme un laboratoire de ces innovations, il s’agit d’observer l’impact de ces dernières sur le contenu des aménagements mais aussi sur les acteurs et leurs rapports de pouvoir dans la fabrication de la ville.
Les écoliers sur les sites d’orpaillage au Mali : une des niches de la déperdition scolaire
Authors: Soïba Traore Idrissa , Lauwerier Thibaut
Published: September 2020

L’école au Mali traverse aujourd’hui une série de crises aux contours complexes et variés. Parmi ces crises, la vulnérabilité des jeunes sur les sites d’orpaillage apparaît comme une question cruciale. Nous avons souhaité dans cet article creuser la problématique du lien entre la présence des écoliers sur ces sites et la déperdition scolaire à travers une recherche menée dans la commune de Kéniéba, située à l’ouest du pays, où les enfants, bien que scolarisés, abandonnent l’école pour les activités aurifères. Nous avons voulu, en particulier, comprendre quels sont les facteurs qui président au maintien des écoliers sur les sites d’orpaillage plutôt qu’au suivi d’une scolarité régulière.
L’amitié contre le social : amour du prochain et amitié politique chez Hannah Arendt
Authors: Thoumire Édouard
Published: September 2020

On examine la tension que la pensée de Hannah Arendt a laissé entrevoir entre les rapports sociaux modernes et ceux, politiques, qui lient les acteurs lorsqu’ils bouleversent collectivement le sens et l’organisation de leur monde commun. Plus précisément, en mettant en perspective la thèse sur le Concept d’amour chez Augustin avec quelques-unes de ses réflexions sur l’amitié, on cherche à interpréter la politique d’Hannah Arendt comme une politique de l’amitié qui doit à chaque fois émerger à partir de et contre le monde inégalitaire et désertique du social.
Pharmaceutical supply chain transformation through application of the Lean principle: A literature review
Authors: Argiyantari Berty , Simatupang Togar M , Hasan Basri Mursyid
Published: September 2020

Purpose: This study aims to review the previous literature on the topic contained in the title in order to identify gaps in the existing research relating to lean supply chain-related issues within the pharmaceutical industry since limited attention has been devoted to this sector.  Design/methodology/approach: This study presents a systematic literature review that proposes an analysis and classification of the previous literature as falling within one of four categories, namely; the supply chain area, research approach, research objective, and lean supply chain elements.Findings: The results of this study indicate that most attention was focused on manufacturing, while upstream suppliers, downstream activities and the entire supply chain process have received comparatively scant consideration. Similarly, the issues of information technology management, supplier management, customer relations, and logistics management as well as practitioner involvement represent inadequately developed topics. Future research should address these omissions, in addition to the integration of quality compliance and digital innovation as they relate to pharma 4.0.Practical implications: This article serves as a guide to acquiring sufficient knowledge of the pharmaceutical supply chain prior to implementing lean supply chain management. Moreover, it is anticipated that the research it contains will contribute to eradicating the knowledge gap by expanding the existing limited body of literature on the adoption of lean approach in the PSC.Originality/value: This study is one of a limited number of literature analyses potentially helpful in developing a roadmap of lean principle application to the pharmaceutical supply chain
Análisis constructivo de la cúpula de madera del desaparecido Palacio de los Cárdenas en Torrijos (S. XV)
Authors: Nuere Matauco Enrique , Candelas-Gutierrez Ángel , De Mingo García Javier
Published: September 2020

En el Museo Arqueológico Nacional se halla una de las cuatro techumbres de lazo que existieron en el desaparecido y expoliado Palacio de los Cárdenas en Torrijos (Toledo, s. XV), de las cuales era la única en forma de media naranja. La excepcionalidad de las cúpulas en la carpintería de armar española hace de cada una de ellas un ejemplar único. Saber trazarlas permitía alcanzar el más alto grado del gremio. Sin embargo, en los tratados no llega a completarse una correcta definición de los procedimientos para su trazado, construcción e integración de laceria. Tras el análisis in situ de esta armadura desarrollamos tanto su descripción formal como su configuración constructiva; desvelamos cual es su estructura resistente y avanzamos en los procedimientos que se pudieron seguir tanto para la introducción del lazo en la dificil geometria esférica, como para llevar a cabo su fabricación y montaje.
La gestión documental en los modelos de gobernanza TIC: presencia y visibilidad de la normativa internacional en el modelo de referencia COBIT
Authors: Eito-Brun Ricardo , Calleja Aliaga Coral
Published: September 2020

La gobernanza y gestión de servicios y sistemas de información disponen de una serie de normas que reúnen las mejores prácticas desarrolladas por instituciones y empresas. Esta experiencia se presenta en la forma de marcos de referencia que definen objetivos, indicadores y procesos, y que se pueden usar como guía para definir los procesos internos y comparar la actuación de las organizaciones con las buenas prácticas de la industria. Entre ellos destacan el modelo COBIT desarrollado por ISACA (Information Systems Audit and Control Association) y la norma internacional ISO/IEC 38500, dedicados a la gobernanza TIC.

En este artículo se analiza la presencia de las prácticas de gestión documental en el marco del modelo COBIT y la visibilidad de las normas específicas de gestión de documentos ISO 15489 e ISO 30300 en el mismo.
A Proposed Framework of Campus-Oriented Online Text Messaging System
Authors: Syaifudin Yan Watequlis , Yunhasnawa Yoppy , Pramitarini Yushintia , Setiawan Awan , Rohadi Erfan , Saputra Pramana Yoga
Published: September 2020

Nowadays, the rapid advancement of mobile software development has triggered to emerge of more online text messaging applications. In the environment of higher education institutions, it is also widely utilized to support the communication process between campus members. This research proposed a system of campus-specific online text messaging that is expected to improve academic activities. As a case study, the system was implemented using React Native framework and Push Notification Service for use in State Polytechnic of Malang, Indonesia. The system consists of three main subsystems that work together, including Client Application, Server Application, and Push Notification Manager. To evaluate the proposed system, we conducted a survey. The result of the user satisfaction test shows that most users consisting of lecturers, staff, and students felt more helped in the communication process in the campus environment.
Developing an Android-Based Mobile Application for Civic Education Learning
Authors: Murdiono Mukhamad , Suyato Suyato , Rahmawati Elly Nur , Aziz Muhammad Abdul
Published: September 2020

The study has developed an android-based mobile application that can assist in the teaching-learning process of civic education in senior high schools. As a research-and-development activity, it employed the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). Based on validation by material experts, the developed application was very feasible to use (89.04%), and the media experts concurred with this assessment (90.78%). During the large-group trials, the application scored between 3.96 and 4.68, meaning that it provides an excellent media or platform with high feasibility for the teaching-learning process of civic education in senior high schools.
Assistive Mobile Application for Visually Impaired People
Authors: Nayak Sriraksha , C B Chandrakala
Published: September 2020

According to the World Health Organization estimation, globally the number of people with some visual impairment is estimated to be 285 million, of whom 39 million are blind.  The inability to use features such as sending and reading of email, schedule management, pathfinding or outdoor navigation, and reading SMS is a disadvantage for blind people in many professional and educational situations. Speech or text analysis can help improve support for visually-impaired people. Users can speak a command to perform a task. The spoken command will be interpreted by the Speech Recognition Engine (SRE) and can be converted into text or perform suitable actions. In this paper, an application that allows schedule management, emailing, and SMS reading completely based on voice command is proposed, implemented, and validated. The System hopes to provide blind people to simply speak the desired functionality and be guided thereby the system’s audio instructions. The proposed and designed app is implemented to support three languages which are English, Hindi, and Kannada.
Corporate Social Responsibility in Organizations
Authors: Agüera María de la Soledad Zapata
Published: September 2020

The European Commission 2011 defines social responsibility as the responsibility of companies for their impacts on society, so it is a complex concept that the authors will define, not only theoretically to give content to this activity but also practical to get to understand the advantages that can be used to use corporate social responsibility, not only at the image level but also at the economic level. Organizations can carry out different types of actions with social responsibility; stations with some advantages can even become a competitive advantage. But not all are advantages for companies when CRS policies are made; there are also disadvantages that must be known by marketing managers. In this chapter they will be developed. Finally, the conclusions of all the above will be presented.
CSR and Stakeholders' Engagement
Authors: Tobaruela Delgado Ignacio
Published: September 2020

Companies implement corporate social responsibility (CSR) practices along their supply chains to fulfil stakeholder requirements. Failures and no-compliances also emerge, caused by supply chain members. This chapter aims to analyse CSR from relational perspective, exploring supplier engagement to compliance with CSR framework and the relationship firm/stakeholder. On the basis of general research question of how to enhance CSR practices in vertical relationships, the main aim of this chapter is to identify the corporate practices that better support compliance with CSR standards or CSR codes of conduct. Relational perspective emphasizes relationships, which become the nucleus of the studies that consider relationships between the corporation and society as first and most important issue. Consequently, relational perspective contributes towards understanding of compliance of stakeholders in CSR implementation. The chapter introduces an exploratory study about practices, attitudes of stakeholders, and knowledge sharing in a collaborative environment of relational capital.
Environmentally Proactive Strategies and Absorptive Capacity
Authors: González-Zubieta Cristian , Amores-Salvadó Javier
Published: September 2020

The objective of this chapter is to deepen into the association between corporate governance and the adoption of environmentally proactive strategies. The theoretical approach used is the knowledge-based view. This chapter explains how the environmentally proactive strategies could be enhanced by the director interlocks, who help the company to acquire environmental knowledge. The concept of the environmental absorptive capacity is used to inquire how the knowledge from the director interlocks is utilized to improve the company's environmental responsiveness. The results of the analysis conducted indicates that the main contribution of the director interlocks is to help companies to acquire resources and environmental knowledge, useful to deploy environmentally proactive strategies. This study is of particular importance for firms, establishing environmentally proactive strategies. The study invites investors, CEOs, and managers to consider the director interlocks to renew the environmental capacities and comply the most stringent requirement of stakeholders.
Micro-Foundations of Corporate Sustainability
Authors: Balarezo Remy , Corcuera Paul
Published: September 2020

This chapter introduces readers to the micro-foundation framework in corporate sustainability. Traditionally, strategic management and corporate sustainability research have explained why firms become more sustainable from a macro-level perspective. In recent years, new research has focused on the micro-level mechanism at the individual or group level. This research stream is known as the micro-foundations movement and tries to highlight individual characteristics, knowledge, background, etc. when firms decide to become more sustainable. Through the literature review, the authors tried to identify the studies published in top journals about the micro-foundation framework. Therefore, the aim of this chapter is to give a primary introduction and an overview of the micro-foundations framework in corporate sustainability and identify what mechanisms have been found at the micro-level that explain why firms become more sustainable.
Formation of Microstructure during Sub-Zero Treatments of Chromium and Chromium-Vanadium Ledeburitic Steels
Authors: Jurči Peter
Published: September 2020

Despite the fact that the sub-zero treatment has widely been employed in various industrial branches more than 100 years, metallurgical principles of microstructural alterations was discovered only over past several years. Many experimental works have been done in order to describe what happens in the microstructures of various steels when they are subjected to the treatment within a temperature range 4 - 273 K and for different durations of this treatment. The obtained results infer that the changes in microstructure and thus in mechanical properties depend not only on the treatment regime used, but they are closely related to the steel chemistry. The current paper summarizes the findings obtained by sub-zero treatments of two different ledeburitic tool steels (AISI D2 and Vanadis 6). The changes in retained austenite characteristics, alterations in martensitic structures, variations in carbide characteristics and modifications in precipitation behaviour are demonstrated and discussed.
On the Question of the Application of Basalt Microfiber for Reinforcement of Thermal Insulation AAC
Authors: Lapovska Svitlana Davydivna , Demchenko Tetyana Mykolaivna , Kovalchuk Oleksandr Yuriyovich , Chornovol Victoriya Oleksandrivna
Published: September 2020

The article describes the first exploratory studies on the reinforcement of heat-insulating autoclaved aerated concrete with a basalt microfiber. The aim of the work is to obtain autoclaved aerated concrete of reduced density with improved tensile and bending characteristics. The first results obtained using basalt microfiber for reinforcing cellular concrete with a density of 150 kg/m3 are analyzed.
Research of Conditions of Removal of Fire Protection from Building Construction
Authors: Tsapko Yuriy , Tsapko Oleksii , Bondarenko Olga P.
Published: September 2020

Fireproof coatings at the time of operation of the building structure is a separate and complex task, covering both the stages of the process protection from moisture, and subsequent fire protection formed during the swelling of the coating. They have been proven to create a layer of material on the surface that prevents moisture from penetrating the wood when the destruction of the coating begins. This makes it possible to determine the effect of flame retardants and the properties of the protective compositions on the process of slowing down the rate of water absorption. The process of moisture transfer by flame retardant coating in the presence of a polymeric shell is simulated, the diffusion and mass transfer dependences are obtained, and the diffusion coefficient is determined, which is 7.08·10-12 m2/s, which allow to obtain a change in the dynamics of moisture upon washing out of the flame retardant. The results of determining the weight loss of the coating sample during exposure to water indicate the ambiguous effect of the nature of the leaching agent. In particular, this implies the availability of data sufficient for qualitatively conducting the process of inhibition of moisture diffusion and detection on its basis of the moment from which the fall of the coating efficiency begins. Features of slowing down the process of moving the moisture to the material that is treated with flame retardant, are in several aspects. Namely, the use of water-insoluble flame retardants and other components, as well as polymer binder, which are characterized by the formation of polymer shell on the surface of the wood.
Role of Activation in Formation of Polymer Composite Properties
Authors: Kazmirchuk Nataliia , Korobko Oksana , Semenova Svetlana , Rozhniuk Olena
Published: September 2020

The possibility of increasing crack resistance, strength and elastic modulus of polymer-containing compositions due to the directed organization of their structure by internal, external and complex activation is investigated. Filled polymer compositions are presented as open complex dynamic systems. This made it possible to use rational fillers and special matrix-transformer of external electromagnetic influences as factors for controlling the processes of their structure formation and hardening to obtain materials with the required properties.
Modeling the Optimal Composition of Structural Epoxy Composites Filled with Dispersed Metal Waste
Authors: Lebedev Vladimir , Tykhomyrova Tetyana , Shestopalov Oleksii , Troshin Olexiy , Melnik Tamara
Published: September 2020

Processes of modeling the optimal composition of structural epoxy composites filled with dispersed metal waste are investigated in the article. The influence character of dispersed metal wastes introduction on the operational and strength properties of cold-cured structural epoxy composites is shown. A model for predicting the operational and strength properties of structural epoxy composites depending on dispersed solid phase of metal waste content and a highly active accelerator in them is designed.
Assessment of Hydroabrasive Wear Resistance of Construction Materials with Functional Coatings, which are Formed by Resource-Saving and Environmentally Friendly Technologies
Authors: Tarelnyk Viacheslav , Konoplianchenko Ievgen , Haponova Oksana , Sarzhanov Bogdan
Published: September 2020

The work presented in this paper is devoted to the formation of thick-layer wear-resistant coatings by technologies based on electrospark alloying, an example of essential components hardening for the heavy-duty processing equipment operating under hydroabrasive wear conditions. The aim of the paper is to improve the manufacturing and repairing technologies for the helical surfaces of the screws made of 65Г, 30X13 and 40X steels and corrosion-resistant stainless steel 12X18H10T. The above aim has been achieved owing to applying the new environmentally friendly technologies for the formation of the surface layers, and also due to the choice of the surface layers that are most resistant against hydroabrasive wear, which choice being provided for by conducting the comparative tests on the samples made of the above said steel grades and strengthened in various ways. The analysis results of the hydroabrasive wear resistance of the samples made of steel and provided with protective coatings is presented.
Frost Resistance of Decorative Composites of Different Composition
Authors: Dovgan Alexandra D. , Vyrovoy Valeriy M. , Dovgan Petr M. , Silchenko Serhii V.
Published: September 2020

The article considers issues relating to the decorative concrete stability to frost impact. The study of the influence of prescription factors on the frost resistance value of composite compositions, manufactured of high-mobility mixtures, was carried out according to a symmetrical 5-factor plan with 27 experiments. Depending on the nature of the effect on the decorative composite, the variable raw materials are grouped into two groups of factors - modifications of cement-sand system, parameters of dispersed reinforcement. Kinetic curves, correlation, experimental-statistical model were constructed based on the results of the field experiments. The results of the research demonstrated – the use of zeolite instead of part of cement, glass fibres and fillers of optimal granulometric composition in combination with a plasticiser contributes to reducing integral porosity and provides the preservation of composite strength, and accordingly, resistance to climate impacts, saving the decorative properties during the operation of the decorative composite.
Modeling and Optimization of Technology and Physics-Mechanical Properties of Composite Materials
Authors: Trofimova Larysa
Published: September 2020

To this day, there is a large volume collected of the results of experimental studies on structure changes in various dispersions serving as base for production of most construction materials. The analysis of collected information revealed that there is an entire category of stick-slip phenomena, the case history of which is represented by N-and S-type inflections on rheological, kinetic and other curves. We should emphasis that the view of such non-trivial charts is alike with geometry of standard curves of standard conditions. And this alikeness predetermines the possibility of applying topological models of «fold» and «ruffle» types for studying various abnormal effects. We must also note that besides N- and S-types there is a range of other characteristics («flags») pointing to applicability of the methods of catastrophe theory to studying certain processes initiating the apparition of interruptions in system development. Recognition of above-mentioned particularities allows determining the fact and type of catastrophe, the standardised structure of which facilitates finding strict patterns and thus defines directions of optimisation of various situations of research and practical nature. This work shows that pieces of evidence and consistent patters are reliably interpreted within the framework of the proposed concept.
Development of Methods for Determining the Term of Effective Exploitation of Thermal Insulation Materials for 100 Years
Authors: Farenyuk Gennadiy , Oleksiienko Olena
Published: September 2020

The aim of the researches is to identify indicators of longevity of the mineral wool products in the course of their use as an insulation layer of building envelope of construction projects with the working life up to 100 years. The objectives of the research consisted in evaluating changes of the operational characteristics of material – thermal conductivity, air permeability, compression strength at 10% linear deformation, specimen appearance and geometric parameters under cyclic climate effects that simulate environment effect on the state of the thermal insulating materials of building envelopes in the course of operation of construction projects.
Study and Comparison of Characteristics of Models of Hollow-Core Slabs, Reinforced Concrete and Steel-Fiber Concrete
Authors: Surianinov Mykola , Neutov Stepan , Korneeva Irina , Sydorchuk Maryna
Published: September 2020

Two models of hollow core slabs were tested: reinforced concrete and steel fiber concrete. When designing slab models, the proportions of full-sized structures were preserved for the further possibility of correct data comparison. As a result of testing models of hollow core slabs, it was found that the bearing capacity of a slab with combined reinforcement is 24% higher than that of reinforced concrete, the deflection is 36% less, and the crack resistance is 18% higher. The use of steel fiber made it possible to avoid the brittle fracture of a steel fiber reinforced concrete slab, which was observed in the model of a conventional reinforced concrete slab.
Dynamic Roles for IL-2–STAT5 Signaling in Effector and Regulatory CD4+ T Cell Populations
Authors: Jones Devin M. , Read Kaitlin A. , Oestreich Kenneth J.
Published: September 2020

CD4+ Th cells are responsible for orchestrating diverse, pathogen-specific immune responses through their differentiation into a number of subsets, including TH1, TH2, TH9, T follicular helper, T follicular regulatory, and regulatory T cells. The differentiation of each subset is guided by distinct regulatory requirements, including those derived from extracellular cytokine signals. IL-2 has emerged as a critical immunomodulatory cytokine that both positively and negatively affects the differentiation of individual Th cell subsets. IL-2 signals are propagated, in part, via activation of STAT5, which functions as a key regulator of CD4+ T cell gene programs. In this review, we discuss current understanding of the mechanisms that allow IL-2–STAT5 signaling to exert divergent effects across CD4+ T cell subsets and highlight specific roles for this pathway in the regulation of individual Th cell differentiation programs.
Cerebral Cavernous Malformation in a Patient with Pontine Hemorrhage: A Case Study
Authors: Palkopoulou Myrto , Bakola Eleni , Foliadi Marina , Stefanidis Petros , Acquaviva P. Teresa
Published: September 2020

The cerebral cavernous malformations are benign vascular hamartomas, with thin and dilated vascular walls and therefore constantly susceptible to hemorrhage. Clinically, they present with recurrent headaches, acute intracranial hemorrhage and focal neurological deficits. They are considered as angiographically occult vascular malformations and the imaging technique of choice for their diagnosis is magnetic resonance tomography. We present the case of a female patient with acute-onset symptomatology, congruent with a lesion in the basal pons. Her medical history included an intracranial hemorrhage due to a cavernoma, which was surgically removed. The magnetic resonance imaging of the brain revealed two new cavernomas, which were not identified in the imaging conducted in the past. In literature, the cases of de novo appearance of cavernomas are considered highly rare, especially in patients with no consistent family history or medical history of radiation therapy. Resultantly, they should be considered as dynamic lesions, regarding their number, size and behavior.
Defining transposition
Authors: Roderick Max E. , Maria Nikita , Crucean Adrian , Stickley John , Barron David J. , Anderson Robert H.
Published: September 2020

Understanding transposition is important for all who hope to effectively treat patients with the condition. The variants of the condition are frequently debated in the literature. We describe an unusual variant of transposition, in which despite the arterial roots being supported by morphologically inappropriate ventricles, the roots themselves were normally related, with the intrapericardial arterial trunks spiraling as they extended into the mediastinum. The specimen was identified following the re-categorization of our archive, and we subsequently conducted a detailed analysis of the underlying morphology. Using the principles of sequential segmental analysis, we compared the morphology with standard examples previously described. We show how it was the recognition of such hearts that promoted that concept that the combination of connections across the atrioventricular and ventriculo-arterial junctions was the essence of transposition. In the most common variant, the arrangements are concordant at the atrioventricular junctions, but discordant at the ventriculo-arterial junctions. We suggest that the overall arrangement of discordant ventriculo-arterial connections is best described simply as “transposition.” When the discordant ventriculo-arterial connections are combined with similarly discordant connections at the atrioventricular junctions, the transposition is congenitally corrected. We point out that the use of “d” and “l” as prefixes does not distinguish between transposition and its congenitally corrected variant. For those using segmental notations, the correct description for the rare variant found in the setting of a posteriorly located aortic root with the usual atrial arrangement is transposition (S, D, NR).
Prevention and Treatment of “Epidemic Toxin, Pathogenic Dampness, and Lung Deficiency” after COVID-19 Recovery Based on the Theory of “Preventive Treatment of Diseases” in Traditional Chinese Medicine
Authors: Ai Jing , Wu Linguangjin , Wang Ting , Deng Wanli , Zhang Xiaotian
Published: September 2020

Due to the sequelae and recurrence in patients with COVID-19 after recovery. This article, based on the theory of “preventive treatment of diseases” in traditional Chinese medicine, which believes that the three pathogenic factors of epidemic toxin, dampness, and lung deficiency are the fundamental causes of the recurrence of COVID-19. The treatment strategies are to remove pathogenic factors, strengthen qi, nourish yin, clear heat, moisten dryness, and at the same time, reinforce the lung, spleen and kidney, and soothe the liver. Through a variety of treatments such as oral administration, external treatment, and skin absorption, it provides a new idea and method for the management of the recurrence of COVID-19.
Telepediatric assistance in Iran: Specialist and subspecialty challenges
Authors: Masoud Mirmoeini Seyed , Marashi Shooshtari Seyed Sina , Battineni Gopi , Amenta Francesco , Khosrow Tayebati Seyed
Published: September 2020

INTRODUCTION: Having justice for easy access to health services may probably be a standard feature and indisputable right of all health policies. The health policy of Iran enunciates this right. Unfortunately, as may happen in many countries, the execution of this policy depends on different factors. Among these parameters should be quoted as the suitable distribution of professionals, hospitals, and medical facilities. On the other hand, in Iran, there are many other problems linked to accessing areas with natural hindrances.OBJECTIVE: In this study, we analyzed the primary studies that report specialty and subspecialty challenges that had been faced by Iran to improve pediatric assistance.METHODS: Conduction of literature search in PubMed and CINAHL libraries was done, especially studies from 2010 to 2019. A Boolean operated ‘MeSH’ term was used for search. Newcastle–Ottawa Scale (NOS) scoring was adopted to assess the quality of each study.RESULTS: A total of 118 studies were displayed, and among them, 102 were excluded due to duplication and study relevance. Study selection was madebased on its content were classified into two groups (1) shortage and unsuitable distribution of specialist and sub-specialist physicians in Iran, and (2) studies that explain the status of degradation in different areas of Iran. Outcomes demonstrated that Iran is generally suffering the shortage and unsuitable distribution of specialists and sub-specialists. This lack is particularly crucial in deprived and far-away areas from the cities.CONCLUSION: The present study analyzed in detail the current data regarding pediatric health services (specialist and subspecialty) and health-specific facilities distribution in the country.
Effects of surfactants on the remediation of petroleum contaminated soil and surface hydrophobicity of petroleum hydrocarbon degrading flora
Authors: Liu Jianbo , Xu Liming , Zhu Feifei , Jia Shouhao
Published: September 2020

It has been proven that surfactants used in the remediation of petroleum hydrocarbon contaminated soil have great application potential. In this study, the effects of five surfactants (SDBS, Tween80, Tween60, rhamnolipid and TRS-1) on leaching of petroleum hydrocarbons from soil were investigated through orthogonal experiments, and petroleum hydrocarbon components were analyzed by GC/MS. The effects of surfactants on the degradation of petroleum hydrocarbon were analyzed by the changes of microbial growth curve and surface hydrophobicity. The results showed that surfactant type, temperature and surfactant concentration had significant effects on the removal rate of petroleum hydrocarbon. Tween80, rhamnolipid and TRS-1 have good bio-friendliness and a high removal rate of petroleum hydrocarbons (up to 65%), suitable for the restoration of the soil used in the experiment And Surfactants exhibited a higher removal rate for small molecules and petroleum hydrocarbons with odd carbon atoms. Surfactants have a certain modification effect on the surface of relatively hydrophilic bacteria under the initial conditions, making their surface properties develop in the direction of enhanced hydrophobicity, and the hydrophobicity has increased from less than 20% to about 40%.
Factors influencing choice of career: A comparative study among medical, dental and pharmacy students in a private university in Malaysia
Authors: Rajiah Kingston , Maharajan Mari Kannan , Ingle Pravinkumar	Vishwanath , Thiruchelvam Lavinyaa , Gunasagaram Raynugah , Kanagaraj Kirthana , Krishnamurthi Tamilarasi
Published: September 2020

Background: Students choose their careers based on many factors, which vary for every country. Recent advancements in healthcare systems have made pharmacy one of the most pursued professions.
Aim: To study the factors that influence students in Malaysia to choose pharmacy as their career.
Methods: A cross-sectional study was conducted among first-year medicine, dentistry and pharmacy students in a private university in Malaysia. One-way analysis of variance followed by Tukey’s post-hoc test was used to determine the factors that influenced students’ career choices.
Results: There were significant differences among medicine, dentistry and pharmacy students in the mean scores for the dimensions ‘economic status’, ‘personal background’, and ‘work-life balance’ which influenced their career choice.
Conclusions: Economic status, personal background and work-life balance were the factors that significantly influenced students to choose pharmacy compared with students’ choice of dentistry and medicine.
Covid-19: Does Housing Protect the Elderly in Latin America? Argentina and Colombia Compared with Spain
Authors: Módenes Juan A. , Marcos Mariana , García Diva Marcela
Published: September 2020

Protecting the elderly population in the new Covid -19 paradigm cannot only be entrusted to confinement at home, especially in Latin America. The household structure, housing characteristics and employment activity of co-residents condition the exposure of elderly people to contagion at home. In order to measure the exposure, this number of Perspectives Demogràfiques suggests calculating an indicator that estimates multidimensional residential risk and allows comparison between populations. More than half of the elderly people of Colombia and 35% in Argentina are overexposed to Covid-19 at home. Demonstrating that the residential risk is very high in Latin America but also significant in Spain, this study shows that minimizing it must be a priority objective in protecting the elderly. This residential risk indicator for COVID-19 can be used to identify the more exposed areas or subpopulations within countries and guide future policy action with regard to pandemics.
Cinco siglos de desigualdad y transformación socioeconómica en el área de Barcelona, 1451 – 1880
Authors: Pujadas-Mora Joana Maria , Brea-martínez Gabriel
Published: September 2020

La distribución desigual de la riqueza es un tema que preocupa crecientemente a las sociedades contemporáneas pero que tiene fuertes raíces en el pasado. Diversos autores han trazado los orígenes de esta desigualdad reconstruyendo series históricas, recopilando y armonizando datos de fuentes y registros con una cobertura territorial y temporal desigual (Milanovic et al. (2011), Alfani (2015) Piketty (2014 y 2020)). Pocos lugares en el mundo disponen de series estadísticas que permitan reconstruir los patrones de desigualdad socioeconómica en base a una única fuente documental. Barcelona y su hinterland son uno de estos lugares. La Barcelona Historical Marriage Database, creada en el marco del proyecto Advanced Grant Five Centuries of Marriages dirigido por la Prof. Anna Cabré, ha posibilitado analizar para un periodo de cinco siglos la distribución de la riqueza a partir de las tasas impuestas a los matrimonios celebrados en su Diócesis desde 1451 a 1880. En este número de Perspectives Demogràfiques examinamos la evolución de la desigualdad desde el Antiguo Régimen hasta la consolidación de la industrialización, la concentración de la riqueza y la composición y sustitución de las élites económicas del área de Barcelona.
Bible Study of Mission and Discipleship in the Great Commission and Its Implications for Today's Christian Life
Authors: Arifianto Yonatan Alex , Triposa Reni , Lembongan Paulus Karaeng
Published: September 2020

Abstract Christianity in the spiritual growth and quantity of the church cannot be separated from believers who carry out the mandate of the Great Commission. But in the accompanying journey of God there is not much that can be done by believers in mission and discipleship. So with that focus and purpose of this research is to answer the research question of how the Bible study of mission and discipleship in the Great Commission and its implications for Christian life today. While the problem that occurs in this research work is how Discipleship and mission are not properly understood in the current era so that many prioritize mission but override discipleship or vice versa. But the benefits of this research are: first, the importance of mission in the Great Commission, then the importance of discipleship for believers and continuity and the last implies mission and discipleship as life priorities. To describe the biblical study of mission and discipleship in the Great Commission and its implications for contemporary Christian life, researchers used library research methods with quantitative descriptive approaches.
Percepción estudiantil sobre la funcionalidad familiar en el rendimiento académico
Authors: Ríos Guzmán Rony
Published: September 2020

El rendimiento académico hace referencia al nivel de aprendizaje que puede alcanzar un estudiante, el cual se refleja generalmente en un punteo asignado por la institución formadora y está influido por múltiples factores: personales, institucionales y socio-ambientales. Dentro de ellos, el entorno familiar puede influir en forma positiva o negativa en el rendimiento, dependiendo del apoyo que sus miembros brindan al estudiante. Con el objetivo de explorar la percepción que tienen los estudiantes de la funcionalidad familiar en el rendimiento académico, se realizó este trabajo con un enfoque mixto con la técnica de grupos focales y la aplicación del instrumento Apgar familiar en 56 primocursantes de primer año de la Facultad de Ciencias Médicas de la Universidad de San Carlos de Guatemala.Los resultados obtenidos muestran que el 57.1% de los estudiantes tienen algún grado de disfuncionalidad familiar predominando la disfunción leve y que el 66.1% de los estudiantes reprobaron, utilizando como indicador de rendimiento académico el promedio ponderado de las notas del segundo examen parcial de los 8 cursos asignados. Se concluye que los estudiantes perciben que el entorno familiar si influye en su rendimiento académico ya que reciben apoyo económico y emocional por parte de sus familiares y aunque la mayoría presentó algún grado de disfuncionalidad familiar y la mayoría reprobó el segundo parcial, la funcionalidad familiar se relaciona con el rendimiento académico, ya que mientras más alta fue la disfuncionalidad familiar hubo mayor número de estudiantes reprobados.