bluuebunny/crossref_metadata_2025 huggingface dataset:
O ESTÁGIO SUPERVISIONADO NA FORMAÇÃO DO PROFESSOR QUE ENSINA MATEMÁTICA: REFLEXÕES, DESAFIOS E PERSPECTIVAS
Authors: Pozzobon Marta Cristina Cezar , Soares Gabriel de Oliveira
Published: June 2021

O estágio curricular supervisionado compreende uma importante etapa na formação inicial de professores que ensinam Matemática. Com isso, o artigo propõe-se a problematizar e refletir a temática do estágio supervisionado e os desafios da iniciação à docência. As discussões estruturam-se em três eixos: o estágio nos documentos oficiais; relações entre estágios e os programas de iniciação à docência e residência pedagógica e o estágio em tempos de pandemia. Considera-se que muitos são os desafios e (im)possibilidades diante dos estágios curriculares em cursos de formação de professores para ensinar Matemática: a discussão e a resistência em relação às políticas que submetem à formação de professores a agendas neoliberais e conservadoras; a constituição de espaços de coformação entre escola e universidade; a inclusão dos sujeitos excluídos antes da pandemia dos processos formativos; a promoção de políticas e de ações de apoio e valorização dos docentes de escolas e universidades
A AUTORIA DOCENTE NOS PROCESSOS DE ELABORAÇÃO CURRICULAR DE MATEMÁTICA
Authors: Valle Júlio César
Published: June 2021

O propósito deste texto consiste em, partindo das pesquisas sobre currículos e sobre currículos de matemática, identificar perspectivas para a pesquisa capazes de promover e de potencializar a autoria docente nos processos de elaboração curricular. Para isso, tomamos o referencial da Sociologia das Ausências e das Emergências tanto para compreender a natureza da ausência da autoria docente nesses processos como também para endereçar possibilidades no campo das emergências. A proposta de desinvisibilizar os currículos pensadospraticados de matemática, em especial aqueles de caráter emancipatório emerge, nesse contexto, como alternativa teórico-metodológica para a fundamentação de perspectivas para a pesquisa sobre a prática de quem ensina matemática. Assumi-la corresponde, como argumentamos no texto, à tentativa de promover e de potencializar a autoria docente nos processos de elaboração curricular.
El síndrome de burnout y sus consecuencias en la salud mental de los docentes
Authors: García Rodríguez Reynier , Sánchez Parrales Ligia Vanessa , Dueñas Segovia Francisco , Meza Macías Alejandro
Published: June 2021

La educación es un proceso que demanda docentes preparados, capacitados, poseedores de valores, pero también con una adecuada salud mental. Estos aspectos son medulares en la formación de los niños, niñas y jóvenes. El Instituto Superior Tecnológico, propuso un proyecto de investigación cuyo tema es: Alternativas de desafíos contra el síndrome Burnout. La propuesta pretende mejorar la salud mental y emocional dirigida a los docentes de Portoviejo- Manabí, con un alcance de dos años, que culmina en el 2022. La propuesta es innovadora, pertinente, actual y contextualizada, que responde a las necesidades de la provincia y del cantón. El objetivo del estudio fue proponer un sistema de acciones encaminado a la prevención del síndrome de burnout en los docentes de unidades educativas fiscales del cantón Portoviejo.  Se aplicó una metodología inherente a un estudio descriptivo, prospectivo y transversal en 200 docentes de instituciones fiscales, donde los docentes se encontraron sensiblemente afectados, los principales síntomas identificados fueron, agotamiento físico y mental, falta de motivación absoluta, sensibilidad a la crítica, pérdida de energía, descenso en la productividad laboral y estrés. En la teoría hubo divergencia de las opiniones, considerándose el síndrome de burnout como una patología mental crónica y/o aguda, la investigación permitió valorarla como aguda, en tanto se intervenga en pos de la salud mental. Se concluye que la encuesta arrojó información dirigida a una propuesta operativa de sistema de acciones encaminado a la prevención del síndrome de burnout en los docentes de unidades educativas fiscales del cantón Portoviejo.
Experiencia en la terapia de pacientes pediátricos con Leucemia Linfoblástica Aguda en SOLCA de Manabí
Authors: Villaprado Meza Cecilia Lissete , Cedeño Mera Richard Geovanny
Published: June 2021

Las leucemias se distinguen por infiltración de células neoplásicas del sistema hematopoyético en la médula ósea, sangre y otros tejidos. El objetivo del estudio fue describir la experiencia del Hospital Oncológico “Dr. Julio Villacreses Colmont”). de SOLCA al aplicar la guía de tratamiento del grupo SEHOP- PETHEMA 2013 fundamentada con los últimos avances diagnósticos y terapéuticos desarrollados por el grupo alemán Berlín Frankfurt Muenster (BFM) en pacientes pediátricos con Leucemia Linfoblástica Aguda. Se realizó un estudio de diseño longitudinal con 94 pacientes pediátricos entre 1 y 18 años con diagnóstico de leucemia linfoblástica aguda que recibieron tratamiento con la guía de la Sociedad Española de Hematología y Oncología Pediátrica. Los resultados destacan que de los 94 niños, 54% pertenecían al género masculino, el rango predominante fue de 2 a 6 años, el inmunofenotipo más frecuente (90%) fue LLA-B COMÚN, en el  estudio citogenético 79% presento una Diploidia, y 94% no presentó reordenamientos moleculares, la evaluación de la respuesta a los corticoides en el día +8 fue buena en el 94% de los niños, en el día +15  68% alcanzaron la remisión completa (RC < 0,01%) .Se estadificaron 1 paciente en riesgo estándar, 75 en riesgo intermedio y 18 en riesgo alto. Se concluye que la guía SEHOP se puede cumplir eficientemente, sin embargo se deben realizar estudios corporativos a nivel país que permitan identificar nuestras falencias y crear estrategias para optimizar el soporte integral del inmunocomprometido y obtener terapias de salvataje en niños refractarios y recaídos.
COMPARATIVE ANALYSIS OF THE OPTIMAL PLAN OF RESOURCE MANAGEMENT
Authors: KOCHETKOV Oleksii , AFANASOVA Julia
Published: June 2021

The prerequisites of optimal plan for resource management of an agricultural enterprise to get the maximum profit with ensuring acceptable dynamics of resource potential are analyzed in the article.
It is established that the maximum level of economic return is possible in special condition with corresponding alternation of resource-restoring and intensive mode. Moreover, the intensive mode is inefficient in special economic conditions due the aftereffect of this mode critically reduces the resource potential of an agricultural enterprise.
It is proved that the optimal plan of the proposed mechanism resource management has common features with an intensive resource using mode than with a resource-restoring one. It indicates about the economic orientation of optimal resource management. The resource-restoring practice is a necessary tool for ensuring a sustainable level of resource potential.
Based on the results of a comparative analysis with alternative scenarios for the development of resource management practices, the effectiveness of the optimal plan is proved. Effective management of production conditions that form the resource potential of agricultural enterprises creates competitive advantages in the form of additional economic benefits. This is a necessary prerequisite for the reproduction of resources of an agricultural enterprise as the basis of sustainable development of agricultural enterprises.
It is proposed to use the principles of dynamic programming in the resource management of agricultural enterprises. Dynamic programming is defined as an effective alternative to adaptive mechanisms for improving the management of the resource potential of agricultural enterprises. The main advantage is the implementation of the goal-setting function of the management system in the system of strategic planning of enterprise development.
Persiapan Masa Pensiun Melalui Produk Dana Pensiun Lembaga Keuangan (DPLK)
Authors: Nukman Agustam Mohamad Ibrahim
Published: June 2021

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Economic Value and Public Perceptions of Whale Shark Tourism in Nosy Be, Madagascar
Authors: Ziegler Jackie A. , Diamant Stella , Pierce Simon J. , Bennett Rhett , Kiszka Jeremy J.
Published: June 2021

Nosy Be in northwestern Madagascar is home to a globally important whale shark (Rhincodon typus) aggregation and a growing whale shark tourism industry. However, whale sharks are not protected in Malagasy waters and are threatened by fisheries bycatch, collisions with vessels, and disturbance from tourism. We used tourist questionnaires (n= 488) to assess the economic value of, and tourist perceptions of, whale shark tourism in Nosy Be from September to December 2019. We also surveyed whale shark tour operators (n= 12) in December 2018 to understand their perceptions of tourism management needs in the region. Results suggest the Nosy Be whale shark tourism industry was worth US$1.5 million for the 3-month 2019 whale shark season. "Dedicated" whale shark divers (i.e., those who came specifically to Nosy Be to swim with whale sharks) spent 55% more money overall and six times the amount individually compared to "casual" whale shark divers. Both tourists and operators supported the protection of whale sharks, with the majority (88.9%) of tourists agreeing that they would choose a tourism destination at which whale sharks are protected. However, tour operators did note significant management issues (e.g., overcrowding, lack of regulations/training), recommending the need to better regulate whale shark tourism and interactions. This study emphasizes the economic rationale for protecting whale sharks in Madagascar to safeguard the emerging marine tourism industry and ensure it is being sustainably managed.
IMPACT OF THE SYSTEM OF CIVIL LAW CONTRACTS ON THE RECOGNITION OF LABOR RELATIONS BASED ON CIVIL LAW CONTRACTS
Authors: Sonin O. E. , Еlkina A. S.
Published: June 2021

The article is devoted to the study of the problem of the influence of the system of civil contracts arising from the provisions of the current Civil Code of the Russian Federation on the solution of the issue of the possibility of recognizing labor relations based on civil contracts.
It means that Art. 19.1 of the Labor Code of the Russian Federation, the possibility of recognizing a relationship as labor is determined by the circumstances established in it, including the listing of the parties to the civil contract and its subject. In such conditions, it seems necessary to resolve the issue of giving preference to substantive requirements (signs of labor relations enshrined in Article 15 of the Labor Code of the Russian Federation) or formal requirements established by the provisions of Part 1 of Art. 19.1 of the Labor Code of the Russian Federation.
The conclusion is substantiated that the influence of the system of civil law contracts and the related terminology of the Civil Code, which determines the parties and the subject of such contracts, on the decision of the possibility of recognizing relations as labor should not be taken into account when applying the current edition of Art. 19.1 of the Labor Code of the Russian Federation, and this article itself needs to be changed.
THE CONSTITUTION AS AN OBJECT OF LEGAL PROTECTION: THE HISTORICAL AND THEORETICAL ASPECT
Authors: Trifonov S. G.
Published: June 2021

Ideas about the need for special means of protecting the Constitution arise and develop simultaneously with the appearance of the first written constitutions. The study of the protection of the Constitution reveals the legal tools that can be used to prevent attacks on constitutional principles and values.
The article analyzes the meaning of the term Constitution in historical retrospect, highlights the organic connection between the terms Constitution and constitutionalism, and pays attention to the thoughts of scientists and educators about the Constitution and its legal protection. It also describes the techniques used to protect the first constitutions.
Ideas for a certain protection or defense of the Constitution arose immediately with the appearance of the first constitutions. They were implemented gradually, either finding their expression in the constitutional text itself or following the development of judicial practice. Such means gradually became the institution of repeal of acts, the formation of the constitutional-legal Institute of the guarantor and guardian of the Constitution, the Institute of constitutional control, the procedure for changing the Constitution, and others.
INTERPRETATION PROBLEM CRITERION OF CONFERENCE, LIMITING THE SCOPE OF THE MECHANISM ACQUISITION
Authors: Ablyatipova N. A. , Rogozhin N. V.
Published: June 2021

Based on the analysis of the current civil law, judicial practice and scientific literature, this article explores some of the problems of interpreting good faith as the requisite for acquiring ownership by prescription. The authors draw attention to the limited situations to which the rule on acquisitive prescription may apply, due to the existing official regulatory clarification of the good faith criterion. The work examines the latest practice of the judicial board for civil cases of the Supreme Court of the Russian Federation, which formed a position on the interpretation of good faith, which seems to contradict the legitimate understanding of this condition. In this regard, some situations of life are examined, namely, the seizure of property by moving into an empty abandoned house, as well as the situation when the cohabitant (actual spouse) becomes an independent owner of the property of the owner. Using these examples, the authors show how the problems of interpreting the criterion of “good conscience” as part of acquisitive prescription investigated in the article affect the formation of ambiguous, and in some cases, illegal judicial practice.
QUALIDADE MICROBIOLÓGICA DE LEITE DE TANQUE DE REBANHOS LEITEIROS DO ESTADO DE ALAGOAS, BRASIL
Authors: Alves Elizabeth Simões do Amaral , Dos Santos Micheline Thais , Peixoto Aila Fabiane , Nunes Kleber Barros , Da Silva João Manoel , Da Silva Paula Cibelly Vilela , Dos Santos Tania Marta Carvalho , De Medeiros Elizabeth Sampaio
Published: June 2021

O objetivo desse estudo foi avaliar a qualidade microbiológica de amostras de leite cru resfriado e pasteurizado provenientes de três regiões do estado de Alagoas (Litoral, Agreste e Sertão). De cada fazenda foi coletado 3 tipos de amostras de leite: amostras dos quartos mamários, amostras do leite de tanque e amostras do leite UHT (Ultra Hight Temperature). Os rebanhos eram constituídos de animais de diferentes raças, idades e estágios de lactação. Foram realizados ensaios para contagem de micro-organismos mesófilos, psicrotróficos, coliformes totais e termotolerantes e Staphylococcus spp.. Nenhuma das amostras de leite UHT apresentou presença de nenhum dos micro-organismos em estudo, evidenciando que para esse tipo de leite, as amostras estão totalmente dentro dos padrões estabelecidos pela legislação vigente quanto à qualidade microbiológica. As amostras de leite resfriado apresentaram mesófilos (>3 Log₁₀ UFC/ml), psicrotróficos ( 1100 Log₁₀ NMP/ml) e termotolerantes (3 a >1100 Log₁₀ UFC/ml), além da alta frequência de Staphylococcus spp. (2,8 a >3 Log₁₀ UFC/ml). A presença desses micro-organismos pode estar associada às más práticas de manejo de ordenha, bem como higiene do ambiente e deficiências na refrigeraçao, o que pode ocasionar deterioração do produto e contaminação dos animais e consumidores finais.
EXISTENCE OF SOLUTION FOR A VOLTERRA TYPE INTEGRAL EQUATION USING DARBO-TYPE F-CONTRACTION
Authors: Akutsah F. , Mebawondu A. A. , Narain O. K.
Published: June 2021

In this paper, we provide some generalizations of the Darbo's fixed point theorem and further develop the notion of $F$-contraction introduced by Wardowski in (\cite{wad}, D. Wardowski, \emph{Fixed points of a new type of contractive mappings in complete metric spaces,} Fixed Point Theory and Appl., 94, (2012)). To achieve this, we introduce the notion of Darbo-type $F$-contraction, cyclic $(\alpha,\beta)$-admissible operator and we also establish some fixed point and common fixed point results for this class of mappings in the framework of Banach spaces. In addition, we apply our fixed point results to establish the existence of solution to a Volterra type integral equation.
Caso de estudio sobre el nuevo tipo de consumidor cinematográfico: el fenómeno binge-watching
Authors: Matei Antonio
Published: June 2021

La brusca irrupción de Internet en el mercado audiovisual ha transformado completamente las tendencias y hábitos de consumo cinematográfico. Dentro de este nuevo ecosistema audiovisual, la mayor parte del consumo se realiza de manera online, y es en las generaciones más jóvenes, objeto del presente estudio, en quienes este hábito se da de una manera más evidente. El deseo de poder consumir el contenido audiovisual dónde, cuándo y cómo se quiera, ha venido marcando la evolución de este sector en las últimas dos décadas. Con la aparición de las grandes distribuidoras de video bajo demanda, se ha facilitado el consumo compulsivo de series y películas, fenómeno conocido como binge-watching.
Resocialisation of Experienced Employees: Challenges in a Context of Change
Authors: Arras-Djabi Mélia , Lacaze Delphine
Published: June 2021

Management research in the field of organisational socialisation has largely focused on the incorporation of new recruits into stable organisations. This research study looks instead at the resocialisation of employees facing planned changes in their role expectations. Conducted with the assistance of a leading European railway company that had undergone a transformation process, the study is a qualitative piece of research mobilising 35 cases of employee resocialisation. The main findings are threefold: they reveal four typical forms of resocialisation (conviction, resourcefulness, resignation and transgression) spanning the continuum from success to failure; indicators of successful and failed resocialisation need to be revisited; cognitions or emotions (adherence) and behaviours (role orientation) are clearly aligned with conviction and transgression, as are those socialisation dimensions that can serve as either resources or barriers. Conversely, resourcefulness and resignation reveal ambivalent forms of resocialisation. Finally, experienced employees tend to face three kinds of resocialisation resources and barriers (relational networks, biographical continuities or discontinuities and organisational roles), each of which is specific in nature. Lessons can be drawn from these discoveries with regard to the resocialisation of experienced employees.
National Identity and Organizational Identity in Algeria: Interactions and Influences
Authors: Baba Sofiane , Hemissi Omar , Hafsi Taïeb
Published: June 2021

This article examines how national identity influences organizational identity. The interactions and influences between these two identity levels have been underexplored in the identity literature. However, given the national and geographical anchoring of businesses, national identity plausibly influences both their behavior and their organizational identity. This article presents a qualitative case study of the organizational identity of four family-run Algerian businesses, leaders in their respective industries. It theorizes a process model explaining the influence of national identity on organizational identity through three identity mechanisms: protection, justification, and adaptation. The findings suggest that organizational identity can be a social affirmation response whereby businesses demarcate their role in a challenging institutional context. This work opens new research avenues in this field by highlighting the interactions and influences that characterize these two dimensions of identity in a country actively engaged in the identity formation process, which exemplifies a dynamic and complex institutional context.
Transformation of the concept of state security
Authors: Hordiienko Serhii
Published: June 2021

The paper considers the genesis of the theory of the concept of state security in Ukraine, its legal dimension, the definition of a set of state bodies, each of which has its own competence.

Based on the fact that the most acceptable definition of the state is its definition as an organization of political power, it is noted that the security of the state as a system of political power in Ukraine depends on its political, economic, scientific and scientific-technological components.

The author notes that the term «state security» is defined as a qualitatively defined by law state of functioning of the state as a political institution of power, which is achieved by predicting, preventing, detecting and minimizing the negative impact of existing and likely threats to the main features of the state, sovereignty, monetary and tax systems) and allows the state to effectively implement its social purpose to ensure the further development of the individual (citizen), society and the state.

Thus, the hypothesis that the security of the state as an apparatus of power and management is provided by a large number of its bodies, each of which has its own competence, finds its preliminary confirmation.

In the future, the author substantiates this in more detail on the example of other theoretical developments and existing legislation.

Key words: national security, components of national security, threats to national security of Ukraine, qualitative state of state security, rules of definitions, state security and state security, security of state-political, constitutionally legitimized political system of state, security of state formation and constructive policy, political sovereignty, territorial integrity of Ukraine and inviolability of its borders, security of institutions of state power, security of national-state interests in the sphere of economy.
Components of security of Ukrainian statehood by sphere of its existence
Authors: Hordiienko Serhii
Published: June 2021

The paper identifies the components of Ukraine’s security in the spheres of its life: politics, economics, the military, etc.

In the modern world, the driving force of the economy is qualitatively new knowledge, so the structure of the economy as innovative can be reduced to the following formula: general economy = economics of science + scientific and technological economics + economics of material production.

Economics, in our opinion, can be schematically represented as follows: economics of science (information => information resources => innovation => qualitatively new knowledge => intellectual resources), scientific and technological economics and economics of material production.

That is, the security of the state depends primarily on its political component to ensure the economic security of society.

Political security is a qualitative state of the political system of society, which should be determined by law. Economic security — reliable protection of national and state interests in the economy from real and potential internal and external threats, and in the first place — direct and indirect economic losses.

The security of the state as a system of political power in Ukraine depends on its political, economic, scientific and scientific-technological components, which are the foundation of Ukraine’s innovation policy.

Key words: politics, political science, national security and mechanisms of its provision, political security, national security and mechanisms of its provision, indicators of political security, threats to political security, internal political security of the state, challenges to internal political security, external political security of the state, political economy, political economy, science and information, the concept of economic security, the competence of state bodies in ensuring state security.
The main stages of development of the institute of administrative responsibility for illicit trafficking in narcotic drugs and psychotropic substances
Authors: Prystinska Kateryna
Published: June 2021

The article considers the main stages of development of administrative liability for illicit drug trafficking. There are three stages: 1) pre-revolutionary; 2) soviet; 3) the times of independent Ukraine, which differed in approaches to administrative responsibility in this area.

It is shown that the process of drug use began in the archaic period, by conducting magical, religious rites, ritual and healing ceremonies in order to achieve mental reactions and trance. During the stay of Ukrainian lands in the Russian Empire, they were subject to the rules of imperial law, which provided for fines, confiscation of materials and devices used in such offenses.

The provisions of the Administrative Code of the USSR of 1927, the Code of the Ukrainian VTS on administrative violations of 1984 and the current Code of Administrative Offenses, which reflect the rules of administrative liability for violations in this area.

It is shown that during the period of independent Ukraine, administrative and legal activities in the field of combating drug trafficking were conducted in the following areas: licensing activities; the order of transportation of drugs; regulation of their circulation; creation of a public authority whose task was to control the circulation of drugs and legal regulation of their use.

Key words: administrative responsibility, drugs, rites, traditions, treatment, rehabilitation, volumes of narcotic substances.
Leadership Style and Organizational Communication Patterns: a Qualitative Descriptive Study
Authors: Kusumah Alum , Fikri Khusnul
Published: June 2021

This study aims to examine the leadership style and organizational communication pattern in the Converting Department, PT. IPP. The leadership elements described are at the general manager and manager levels. The research method used is descriptive and qualitative methods. The data used are primary and secondary data collected through observation supported by interviews, library research, and document analysis. Data and information obtained from the employee of Converting Department, PT. IPP, with as many as 22 informants consisting of the employee from each level of position. Leadership style at the Converting Department, PT. IPP, is centered on characteristics of existing leaders with the most dominant leadership style is exploitive-authoritative because it is attached to the top leader. The existing leadership style is not quite ideal to face challenges in the future. For internal organizational communication, patterns occur either downward communication, upward, horizontal and cross-channel.
A THz Metamaterial Absorber with Multiple Polarization - Insensitive, Sensitive, and Tunable
Authors: Mohanty Ayesha , Acharya Om Prakash , Appasani Bhargav , Sooksood Kriangkrai , Mohapatra Sushanta Kumar
Published: June 2021

Terahertz (THz) absorbers are gaining interest in many applications. In this paper, we present the design and simulation of a multiband metamaterial absorber (MMA) with combined polarization properties and prominent absorption at 2.2 THz and 3.9 THz. The MMA comprises two square split-ring resonators and one square ring resonator placed on top of a polyimide dielectric spacer, offering multiband absorption characteristics with maximum absorptivity of 93.18% and 96.09%, respectively. The most protruding feature of this design is that it displays multiple polarization characteristics, including insensitivity, sensitivity, and tunability, even though the structure is similar to those of conventional absorbers. Firstly, the distinctly visible absorption spectra at 1.8 THz, gradually diminishes with an increase in polarization angle and then completely vanishes for TM polarization. Secondly, the prominent band at 2.2 THz is insensitive to changes in polarization of the incident wave, whereas, at 3.9 THz, the absorption band displays polarization tunability characteristics. Due to the multiple characteristics displayed by the structure, this MMA can be simultaneously used for several applications in the terahertz frequency regime such as imaging, terahertz spectroscopy, sensing, and stealth technology.
Acute and Chronic Periocular Massage for Ocular Blood Flow and Vision: a Randomized Controlled Trial
Authors: Hayashi, PhD Naoyuki , Du, MSc Lanfei
Published: June 2021

Introduction: The ocular blood flow (OBF) is responsible for supplying nutrition to the retina, which plays a fundamental role in visual function. Massage is expected to improve the blood flow and, consequently, vascular function. The aim of this study was to determine the shortterm and long-term effects of periocular massage on OBF and visual acuity.

Methods: The OBF and visual acuity were measured in 40 healthy adults aged 20–30 years before and after massage, and also in control subjects. Three massage methods were used: applying periocular acupressure (“Chinese eye exercise”: CE), using a facial massage roller (MR), and using an automated eye massager (AM). The OBF and visual acuity were first measured before and after applying each type of massage for 5 min. Eye massage was then applied for 5 min once daily over a 60-day period, while the control group received no massage. The same measurements were then performed again.

Results: Performing short-term periocular massage showed significant interactions in time and massage effects on visual acuity in CE and AM groups, and on OBF in AM group, while 60-day massage period exerted no significant effects. No significant relationship was found between OBF and visual acuity changes.

Conclusions: These results suggest that short-term periocular massage with Chinese eye exercise and automated eye massager can improve OBF and visual acuity, although no causal relationship was supported.
Giant Metrewave Radio Telescope Detection of Hi 21 cm Emission from Star-forming Galaxies at z ≈ 1.3
Authors: Chowdhury Aditya , Kanekar Nissim , Das Barnali , Dwarakanath K. S. , Sethi Shiv
Published: June 2021

We report a ≈400 hr Giant Metrewave Radio Telescope (GMRT) search for Hi 21 cm emission from star-forming galaxies at z = 1.18–1.39 in seven fields of the DEEP2 Galaxy Survey. Including data from an earlier 60 hr GMRT observing run, we co-added the Hi 21 cm emission signals from 2841 blue star-forming galaxies that lie within the FWHM of the GMRT primary beam. This yielded a 5.0σ detection of the average Hi 21 cm signal from the 2841 galaxies at an average redshift 〈z〉 ≈ 1.3, only the second detection of Hi 21 cm emission at z ≥ 1. We obtain an average Hi mass of 〈M
HI
〉 = (3.09 ± 0.61) × 1010 M⊙ and an Hi-to-stellar mass ratio of 2.6 ± 0.5, both significantly higher than values in galaxies with similar stellar masses in the local universe. We also stacked the 1.4 GHz continuum emission of the galaxies to obtain a median star formation rate (SFR) of 14.5 ± 1.1 M⊙yr−1. This implies an average Hi depletion timescale of ≈2 Gyr for blue star-forming galaxies at z ≈ 1.3, a factor of ≈3.5 lower than that of similar local galaxies. Our results suggest that the Hi content of galaxies toward the end of the epoch of peak cosmic SFR density is insufficient to sustain their high SFR for more than ≈2 Gyr. Insufficient gas accretion to replenish the Hi could then explain the observed decline in the cosmic SFR density at z < 1.
Dwarf Satellites of High-z Lyman Break Galaxies: A Free Lunch for JWST
Authors: Gelli Viola , Salvadori Stefania , Ferrara Andrea , Pallottini Andrea , Carniani Stefano
Published: June 2021

We show that the James Webb Space Telescope (JWST) will be able to detect dwarf satellites of high-z Lyman break galaxies (LBGs). To this end, we use cosmological simulations following the evolution of a typical M
⋆ ≃ 1010
M
⊙ LBG up to z ≃ 6, and analyze the observational properties of its five satellite dwarf galaxies (107
M
⊙ < M
⋆ < 109
M
⊙). Modeling their stellar emission and dust attenuation, we reconstruct their rest-frame ultraviolet-optical spectra for 6 < z < 6.5. JWST/NIRCam synthetic images show that the satellites can be spatially resolved from their host, and their emission is detectable by planned deep surveys. Moreover, we build synthetic spectral energy distributions and color–magnitude diagrams for the satellites. We conclude that the color F200W–F356W is a powerful diagnostic tool for understanding their physical properties once they have been identified. For example, F200W–F356W ≲ −0.25 can be used to identify star-bursting (SFR ∼ 5 M
⊙ yr−1), low-mass (M
⋆ ≲ 5 × 108
M
⊙) systems, with ∼80% of their stars being young and metal poor

].
Binary Black Hole Mergers from Young Massive and Open Clusters: Comparison to GWTC-2 Gravitational Wave Data
Authors: Fragione Giacomo , Banerjee Sambaran
Published: June 2021

Several astrophysical scenarios have been proposed to explain the origin of the population of binary black hole (BBH) mergers detected in gravitational waves by the LIGO/Virgo Collaboration. Among them, BBH mergers assembled dynamically in young massive and open clusters have been shown to produce merger rate densities consistent with LIGO/Virgo estimated rates. We use the results of a suite of direct, high-precision N-body evolutionary models of young massive and open clusters and build the population of BBH mergers, by accounting for both a cosmologically motivated model for the formation of young massive and open clusters and the detection probability of LIGO/Virgo. We show that our models produce dynamically paired BBH mergers that are well consistent with the observed masses, mass ratios, effective spin parameters, and final spins of the second Gravitational Wave Transient Catalog (GWTC-2).
One Is the Loneliest Number: Multiplicity in Cool Dwarfs
Authors: Cifuentes Carlos , Caballero José A. , Agustí Sergio
Published: June 2021

Stars in multiple systems offer a unique opportunity to learn about stellar formation and evolution. As they settle down into stable configurations, multiple systems occur in a variety of hierarchies and a wide range of separations between the components. We examine 11 known and 11 newly discovered multiple systems including at least one M dwarf with the latest astrometric data from Gaia Early Data Release 3 (EDR3). We find that the individual components of systems at very wide separations are often multiple systems themselves.
An Ensemble Model for Financial Statement Fraud Detection
Authors: Khedr Ahmed M. , El Bannany Magdi , Kanakkayil Sakeena
Published: June 2021

Fraudulent financial statements are deliberate furnishing and/or reporting incorrect statistics, and this has become a major economic and social concern as the global market is witnessing an upsurge in financial accounting fraud, costing businesses billions of dollars a year. Identifying companies that manipulate financial statements remains a challenge for auditors, as fraud strategies have become increasingly sophisticated over the years. We evaluate machine learning techniques for financial statement fraud detection, particularly a powerful ensemble technique, the XGBoost algorithm, that help to identify fraud on a set of sample companies drawn from the MENA region. The issue of the class imbalance in the dataset is addressed by applying the SMOTE algorithm. We found that XGBoost algorithm outperformed other algorithms in this study: Logistic Regression (LR), Decision Tree (DT), Vector Machine Support (SVM), Adaboost, and RandomForest. The XGBoost algorithm is then optimised to obtain the optimum performance.
A review of the spider-attacking Polysphincta dizardi species-group (Hymenoptera, Ichneumonidae, Pimplinae), with descriptions of seven new species from South America
Authors: Pádua Diego G. , Sääksjärvi Ilari E. , Spasojevic Tamara , Kaunisto Kari M. , Monteiro Ricardo F. , Oliveira Marcio L.
Published: June 2021

The NeotropicalPolysphincta dizardispecies-group is revised. We describe seven new species from South America:P. bonitasp. nov.,P. cosnipatasp. nov.,P. incasp. nov.,P. macroepomiasp. nov.,P. organensissp. nov.,P. pichinchasp. nov., andP. teresasp. nov.In addition, we provide a diagnosis and an identification key to all species of the group.
La participation des patients à la création de valeur via les technologies de santé. Le cas des patients atteints de cancer
Authors: Yatim Fatima
Published: June 2021

La croissance des maladies chroniques oblige à moderniser les prises en charge. L’adoption de stratégies d’organisation favorisant la participation des patients via les outils de la santé numérique figure parmi les solutions les plus prometteuses. Et cet enjeu est encore plus prégnant dans le cas de l’oncologie où la prise en charge des patients a connu des évolutions majeures notamment en raison du développement des thérapies orales. Le présent article analyse la co-création de valeur dans ce contexte précis en mobilisant les résultats d’une étude de cas approfondie menée dans un centre d’oncologie.
Higher Order Aberrations Comparison in Fellow Eyes Following IntraLase LASIK With WaveLight Allegretto and CustomCornea LADARVision4000 Systems
Authors: Tran Dan B , Shah Viraj
Published: June 2021

ABSTRACT

PURPOSE: To compare the differences in objective and subjective visual outcomes with wavefront-optimized versus wavefront-guided excimer laser ablations using two different excimer laser platforms.

METHODS: In this prospective, randomized, matched, contralateral eye study, one eye was treated with the Alcon CustomCornea system, and the fellow eye was treated with the WaveLight Allegretto Wavefront-Optimized system. The IntraLase FS30 femtosecond laser was used to create all flaps. Treatments were randomized to the dominant eye, and optical treatment zones were matched to 6.5 mm. Patients were observed for 3 months after surgery. Initial data analysis was available for the first 28 eyes of 14 patients.

RESULTS: The only statistically significant differences between the groups were seen in the amount of higher order aberrations-the 14 eyes in the WaveLight group had a mean preoperative root-mean-square (RMS) error of 0.37 µm compared to 0.36 µm for 14 eyes in the Alcon group. Of the 8 patients who had 3-month follow-up, 8 eyes in the WaveLight group had a mean RMS error of 0.58 µm at 3 months, compared to 0.41 µm in the 8 eyes in the Alcon group.

CONCLUSIONS: Early results from this study have shown that both laser platforms produce accurate refractive outcomes; however, the Alcon CustomCornea LADARVision4000 system induces statistically significantly fewer higher order aberrations than the WaveLight Allegretto system. [J Refract Surg. 2006;22:S961-S964.]
Hydrogeological Characteristics of the Area of Intermittent Karst Lakes of Pivka
Authors: Petrič Metka , Kogovšek Janja
Published: June 2021

Poseben hidrološki pojav zahodnega dela kraškega masiva Javornikov so presihajoča Pivška jezera. Za celotno območje je značilna tesna povezava podzemnih in površinskih voda. V kraškem vodonosniku se vode pretakajo večinoma podzemno, ob močnejših in dolgotrajnejših padavinah pa se nivo podzemne vode dvigne in voda se na številnih mestih preliva na površje. Tako postanejo aktivni občasni kraški izviri ob reki Pivki, z vodo pa se napolnijo tudi kraške depresije in nastane večje število presihajočih kraških jezer. Nekatera se pojavljajo dokaj pogosto in imajo vodo tudi do pol leta, večinoma pa so bolj redka ali so zalita samo izjemoma v času močnejših poplav. V članku so predstavljene hidrogeološke značilnosti območja, ki se odražajo v režimu pretakanja kraške vode in načinih njenega pojavljanja na površju. A special hydrological feature of the western part of the Javorniki karst massif is the intermittent karst lakes of Pivka. For the whole area a close connection between underground and surface water is characteristic. In the karst aquifer water flows mostly underground, but after more intensive or long-lasting precipitation the water table rises and water emerges on the surface at different locations. Intermittent karst springs along the Pivka river are activated. Also karst depressions are filled with water and several intermittent karst lakes can be formed. Some of them appear very often and contain water for up to six months, but mostly they are very rare and filled up only exceptionally in the time of big floods. In the article the hydrogeological characteristics of the area are presented, which are reflected in the flow regime of karst water and in the forms of its appearance on the surface.
Lithostratigraphic Characteristics of the Intermittent Pivka Lakes Region and Matijeva Jama Cave Estavelle
Authors: Knez Martin , Slabe Tadej
Published: June 2021

V prispevku opisujeva tipične značilnosti kamnin, ki jih zasledimo na področju presihajočih Pivških jezer. V zgornje krednih apnencih sta se oblikovali dve značilni kraški jami: Matijeva jama, ki se danes kaže kot estavela in Trnska jama s številnimi znaki pogostega in izdatnega nihanja gladine podzemeljske vode. Predstavljava nekatere nove izsledke raziskav.This article describes the typical characteristics of rock found in the area of the intermittent Pivka lakes. Two characteristic karstic caves formed in Upper Cretaceous limestone: Matijeva jama, which appears as an estavelle today, and Trnska jama, vvith several old and recent signs of frequent and plentiful fluctuation in groundwater level. Several new research results are presented.
La maqṣūra retráctil y el minbar móvil de la mezquita Kutubiyya de Marrakech
Authors: Almagro Antonio
Published: June 2021

La mezquita Kutubiyya de Marrakech construida por el califa almohade cAbd al-Mu’min entre 1158 y 1163, contó con un sistema móvil para el cierre del recinto de su maqṣūra, ya descrito por las crónicas de la época. Las excavaciones realizadas en 1947 pusieron de manifiesto la infraestructura de este sistema. En el presente artículo se estudia cómo pudo ser el funcionamiento de este artificio en base a las descripciones documentales y a los restos materiales conservados.
Assédio moral na escola: insulto e desejo de reparação moral em uma instituição escolar do Distrito Federal brasileiro
Authors: Tiba Thaisa Marilia Coelho
Published: June 2021

Este artigo apresenta os desdobramentos de uma etnografia do assédio moral entre um grupo de professores da educação básica do Distrito Federal brasileiro. Partindo das vivências dos interlocutores de uma pesquisa realizada em 2013, considerei que as palavras e gestos que assediam estão inseridos em um jogo de linguagem específico, o do assédio moral. Por meio da retomada da análise das narrativas de uma das interlocutoras, a professora Rosa, constatei que tais ações constituem um insulto moral sistemático, cuja influência sentida por ela gera a dor e o sentimento de ressentimento, que enseja o desejo da reparação moral. Além disso, a história de Rosa demonstra que as ações de assédio moral observadas entre alguns professores da capital administrativa do país se encontram inseridas na gramática da política local e constituem uma ferramenta utilizada nas disputas políticas por espaços e poderes institucionais.
Sobre antropologia e saúde, engajamento político e ética em pesquisa: uma conversa com Daniela Knauth
Authors: Knauth Daniela Riva , Franch Mónica , Neves Ednalva Maciel
Published: June 2021

Em tempos de pandemia, a aproximação entre antropologia e saúde é imprescindível, seja pelas inquietações epistemológicas, conceituais e metodológicas proporcionadas por essa aproximação, seja pelo aporte para a saúde da abordagem e conhecimentos antropológicos. É sobre a vivência dessa aproximação que Daniela Knauth versa nesta conversa, tendo como fio condutor sua trajetória de pesquisadora e as contribuições de antropólogos de diferentes instituições brasileiras. Trata-se da história recente da antropologia da saúde envolvendo temas, implicações e ética em pesquisa convergindo para a consolidação da saúde como campo de investigação antropológica no Brasil.
Les malentendus liés à la réduction des risques en prison
Authors: Dos Santos Marie , Michel Laurent , Jauffret-Roustide Marie
Published: June 2021

Cet article s’inscrit dans le cadre d’une recherche collective sur les malentendus liés à la mise en place d’outils de réduction des risques infectieux en prison. À partir d’une présentation du programme PRI2DE et des différentes étapes de l’enquête ethnographique menée au sein de la maison d’arrêt des Baumettes à Marseille, il examine la place accordée à la réduction des risques (RdR) en prison. Introduire des outils de RdR dans une prison suppose que soit reconnue l’existence de pratiques illicites (usages de drogues et sexualité) en son sein. Fondamentalement, la RdR se situe au croisement des missions, paradoxales, portées par l’institution carcérale : la mission de contrôle et la mission de réhabilitation.
Rendre les cancers évitables. Recherches sur le travail cancérogène et ses conséquences
Authors: Hunsmann Moritz , Thébaud-Mony Annie , Équipe du GISCOP
Published: June 2021

Avec près de 400 000 nouveaux cas par an, la France est en pleine épidémie de cancer. Or, malgré la nature fortement inégalitaire de cette épidémie, le rôle du travail dans la survenue des cancers demeure peu ou pas pris en compte. Dans le cadre de l’enquête de cohorte du GISCOP 84 auprès de patients atteints de cancer hématologique pris en charge au centre hospitalier d’Avignon, chaque cancer est considéré comme un « événement-sentinelle » donnant accès aux expositions professionnelles aux cancérogènes subies par les patients, mais aussi aux freins et leviers d’action pour la reconnaissance en maladie professionnelle et la prévention. L’article présente cette démarche de recherche pour l’action et le type de connaissances qu’elle permet de produire, tout en analysant les résistances institutionnelles auxquelles elle se heurte. En effet, si la crise sanitaire majeure qu’est l’épidémie de cancers appelle des réponses fortes, la prévention des cancers professionnels est en prise directe avec les rapports sociaux de production – et donc politiquement sensible.
Aging Population
Authors: Nair Sree Lekshmi Sreekumaran , Rao Bismah , Haque Adnan ul
Published: June 2021

In the wake of the pandemic, many lessons have been learnt, and different challenges have been incurred, leading to the creation of not only stress but also limiting the activities of old-age people. One of the most vulnerable sections of the society is the ‘aging population'. This theoretical chapter discusses the concerns and complexities affecting the aging population in the present pandemic (COVID-19) and how the concerns and complexities impact social and economic activities. The chapter also explores the stress variable. The chapter uses the current scenario and secondary sources to explore the research phenomenon in-depth. Recommendations to the policymakers are given at the end.
Change Management
Authors: Geada Nuno
Published: June 2021

Information is the driving force of organizations because it is in information systems that the decisions are made. The need to have adequate infrastructure for collection, storage, processing, and distribution in an organization means that an appreciable part of the organization's effort in terms of human and financial resources is channeled in this direction. This chapter aims at the development and consequent application of change management, for optimization of information and process management based on the Lean methodology in information systems. The analysis and implementation of infrastructure for information management is based on eliminating waste and activities without added value, thus imparting continuous improvement, in order to achieve the goals/objectives proposed towards excellence and success and optimization processes and services. In order to achieve the objective of this project, a survey and analysis of the requirements of the IT processes to be able to construct and implement change management are done.