bluuebunny/crossref_metadata_2025 huggingface dataset:
Epicardially Placed Bioengineered Cardiomyocyte Xenograft in Immune-Competent Rat Model of Heart Failure
Authors: Chinyere Ikeotunye Royal , Bradley Pierce , Uhlorn Joshua , Eason Joshua , Mohran Saffie , Repetti Giuliana G. , Daugherty Sherry , Koevary Jen Watson , Goldman Steven , Lancaster Jordan J.
Published: July 2021

Background. Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are under preclinical investigation as a cell-based therapy for heart failure post-myocardial infarction. In a previous study, tissue-engineered cardiac grafts were found to improve hosts’ cardiac electrical and mechanical functions. However, the durability of effect, immune response, and in vitro properties of the tissue graft remained uncharacterized. This present study is aimed at confirming the graft therapeutic efficacy in an immune-competent chronic heart failure (CHF) model and providing evaluation of the in vitro properties of the tissue graft. Methods. hiPSC-CMs and human dermal fibroblasts were cultured into a synthetic bioabsorbable scaffold. The engineered grafts underwent epicardial implantation in infarcted immune-competent male Sprague-Dawley rats. Plasma samples were collected throughout the study to quantify antibody titers. At the study endpoint, all cohorts underwent echocardiographic, hemodynamic, electrophysiologic, and histopathologic assessments. Results. The epicardially placed tissue graft therapy improved (

p
<
0.05

) in vivo and ex vivo cardiac function compared to the untreated CHF cohort. Total IgM and IgG increased for both the untreated and graft-treated CHF cohorts. An immune response to the grafts was detected after seven days in graft-treated CHF rats only. In vitro, engineered grafts exhibited responsiveness to beta-adrenergic receptor agonism/antagonism and SERCA inhibition and elicited complex molecular profiles. Conclusions. This hiPSC-CM-derived cardiac graft improved systolic and diastolic cardiac function in immune-competent CHF rats. The improvements were detectable at seven weeks post-graft implantation despite an antibody response beginning at week one and peaking at week three. This suggests that non-integrating cell-based therapy delivered by a bioengineered tissue graft for ischemic cardiomyopathy is a viable treatment option.
Exploration on Robustness of Exponentially Global Stability of Recurrent Neural Networks with Neutral Terms and Generalized Piecewise Constant Arguments
Authors: Si Wenxiao , Xie Tao , Li Biwen
Published: July 2021

With a view to the interference of piecewise constant arguments (PCAs) and neutral terms (NTs) to the original system and the significant applications in the signal transmission process, we explore the robustness of the exponentially global stability (EGS) of recurrent neural network (RNN) with PCAs and NTs (NPRNN). The following challenges arise: what the range of PCAs and the scope of NTs can NPRNN tolerate to be exponentially stable. So we derive two important indicators: maximum interval length of PCAs and the scope of neutral term (NT) compression coefficient here for NPRNN to be exponentially stable. Additionally, we theoretically proved that if the interval length of PCAs and the bound of NT compression coefficient are all lower than the given results herein, the disturbed NPRNN will still remain global exponential stability. Finally, there are two numerical examples to verify the deduced results’ effectiveness here.
Leray–Schauder Fixed Point Theorems for Block Operator Matrix with an Application
Authors: Farid Mohamed Amine , Marhrani El Miloudi , Aamri Mohamed
Published: July 2021

In this paper, we establish some new variants of Leray–Schauder-type fixed point theorems for a

2
×
2

block operator matrix defined on nonempty, closed, and convex subsets

Ω

of Banach spaces. Note here that

Ω

need not be bounded. These results are formulated in terms of weak sequential continuity and the technique of De Blasi measure of weak noncompactness on countably subsets. We will also prove the existence of solutions for a coupled system of nonlinear equations with an example.
Design of circular inductive pad couple with magnetic flux density analysis for wireless power transfer in EV
Authors: Zaini Syasya Azra , Abu Hanifah Mohd Shahrin , Yusoff Siti Hajar , Nanda Nadia Nazieha , Badawi Ahmed Samir
Published: July 2021

As the population grows, people will consume more natural resources. This issue will lead to a low petrol supply for all land transportation, especially supplies for car consumption. Therefore, the electric vehicle (EV) has been introduced to overcome this issue. Currently, wired charging of EVs has been implemented in most of the developed country, including Malaysia. However, some drawbacks have been found from this technology. Therefore, wireless charging comes into the picture to solve this issue. Charging pad on the road and at the car are required for both wired and wireless charging. Various designs of charging pad are available. However, this paper will only focus on the circular design. There is many software that can be used to design the coil pad. Each software has a different procedure and steps to design the coil pad. In this paper, JMAG Designer software will be used to design the circular coil pad. Then, three coil pair were simulated using JMAG Designer to investigate the magnetic flux density between primary and secondary coil when varying the misalignment of 0 cm, 4 cm and 8 cm. From the simulation, there is no specific trend in the relationship between magnetic flux density and misalignment.
Temporal analysis of air pollutants in the most affected monsoon region
Authors: Kairan Omar , Zainudin Nur Nasehah , Mohd Hanafiah Nurul Hasya , Mohd Jafri Nur Emylia Arissa , Fatiha @Suhami Fukayhah , Mustapha Mohd Firdaus
Published: July 2021

Air pollution has become an issue at all rates in the world. In Malaysia, there is a system is known as air quality index (API) used to indicate the overall air quality in the country where the air pollutants include or the new ambient air quality standard are sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), ozone (O3) and particulate matter with size less than 10 (PM10). The concentration levels of the air pollutants were said to be affected by the monsoon changes. Therefore, this study is conducted to examine the existence of temporal variations of each air pollutant then identify the differences of each air pollutants concentration in temporal variations. This study uses secondary data where data that has been retrieved from the Department of Environment (DOE) where it is data of air pollution specifically for Kota Bharu, kelantan records. Hierarchical agglomerative cluster analysis was conducted to group monthly air quality. As a conclusion, the study can conclude that the five air pollutants grouped into several different monthly clusters mostly representing the two main monsoon seasons. Mostly air pollutant varied accordingly towards the monsoon season. During the southwestern monsoon, air pollutant concentration tends to higher compare to the northeastern monsoon with mostly due to meteorological factors.
NB-IoT and LTE-M towards massive MTC: Complete performance evaluation for 5G mMTC
Authors: El Hassan Adil Abou , El Mehdi Abdelmalek , Saber Mohammed
Published: July 2021

Since the emerging 5G wireless network is expected to significantly revolutionize thefield of communication, its standardization and design should regard the internet ofthings (IoT) among the main orientations. Also, emerging IoT applications introducenew requirements other than throughput to support massive machine-type commu-nication (mMTC) where small data packets are occasionally sent. Therefore, moreimportance is attached to coverage, latency, power consumption, and connection den-sity. For this purpose, the third generation partnership project (3GPP) has introducedtwo novel cellular IoT technologies supporting mMTC, known as NB-IoT and LTE-M. This paper aims to determine the system configuration and deployment required forNB-IoT and LTE-M technologies to fully meet the 5G mMTC requirements in termsof coverage, throughput, latency, battery life, and connection density. An overview ofthese technologies and their design principles is also described. A complete evalua-tion of NB-IoT and LTE-M performance against 5G mMTC requirements is presented,and it is shown that these requirements can be met but only under certain conditionsregarding system configuration and deployment. This is followed by a performancecomparative analysis, which is mainly conducted to determine the limits and suitableuse cases of each technology.
Bangla numerical sign language recognition using convolutional neural networks (CNNs)
Authors: Mehedi Shamrat F. M. Javed , Chakraborty Sovon , Billah Md. Masum , Kabir Moumita , Shadin Nazmus Shakib , Sanjana Silvia
Published: July 2021

The amount of deaf and mute individuals on the earth is rising at an alarmingrate. Bangladesh has about 2.6 million people who are unable to interact with the community using language. Hearing-impaired citizens in Bangladesh use Bangladeshi sign language (BSL) as a means of communication. In this article,we propose a new method for Bengali sign language recognition based on deep convolutional neural networks. Our framework employs convolutional neural networks (CNN) to learn from the images in our dataset and interpret hand signs from input images. Checking their collections of ten indications (we usedten sets of images with 31 distinct signs) for a total of 310 images. The proposed system takes snap shots from a video by using a webcam with applying a computer vision-based approach. After that, it compares those photos to a previously trained dataset generated with CNN and displays the Bengali numbers (০-৯). After estimating the model on our dataset, weobtained an overall accuracy of 99.8%. We want to streng then things as far aswe can to make silent contact with the majority of society as simple asprobable.
MATLAB modeling to evaluate the ratio of packed cell volume
Authors: Alwan Zena Ahmed , Yaseen Suhair Mohammed , Jameel Huda Farooq
Published: July 2021

There are many direct and indirect methods of measuring the volumetric ratioof red blood cells relative to sample size and total blood, but the manual carcinogenic method remains the most stable and least expensive method despite the possibility of human error.The ratio percent of the packed red blood cell volume to the total volume of the blood sample is known as the packed cell volume (PCV). Our efforts were directed at finding a precise and economic method for PCV determination. There by, we designed a simple device consisting of a digital camera that is connected to a computer which uses a specific MATLAB program to process the blood images. As a result,the image can be read and the PCV can be calculated using a special code system. This new measuring system provides the capabilities and advantagesto frequently comment on measured PCV with normal or abnormal, in comparison with normal values of PCV, which are stored in the computer. Our measurement method provides accurate results compared to the ruler results to alleviate the effort of clearing the hepatitis C virus from the blood (PCV). This system enables a swift and simple sample analysis and PCV identification.
An improved vigener algorithm based on circular-left-shift key and MSB binary for data security
Authors: Majeed Aso Ahmed , Qader Banaz Anwer
Published: July 2021

Cryptography is a significant study area at present since it can be vital to protect exceedingly sensitive and secret information from illegal fraud during network transmission. One of the basic cryptographic algorithms is the Vigenere cipher, which is a very easy encryption method to be used as an alternative to Caesar cipher for encrypting the text of the message. In this paper, we enhance the Vigenere algorithm and propose a new method by shifting the key in each message to prevent repeating the messages. Also, it converts the messages into binary form rather than an alphabet. Furthermore, it adds a few bits of random padding to each block of outputs to send a series of bits. The proposed algorithm is named “Circular-Left-Shift Key-based Vigener Algorithm using MSB Binary (CLS-V-MSB)”. Finally, this technique slightly raises the size of the ciphertext, but substantially increases the cipher's protection, achieves the security objectives (authentication, confidentiality, integrity, freshness, and non-repudiation), and avoids Kasiski and Friedman.
Performance of similarity explicit group iteration for solving 2D unsteady convection-diffusion equation
Authors: Mat Ali Nur Afza , Sulaiman Jumat , Saudi Azali , Mohamad Nor Syahida
Published: July 2021

In this paper, a similarity finite difference (SFD) solution is addressed for thetwo-dimensional (2D) parabolic partial differential equation (PDE), specifically on the unsteady convection-diffusion problem. Structuring the similarity transformation using wave variables, we reduce the parabolic PDE into elliptic PDE. The numerical solution of the corresponding similarity equation is obtained using a second-order central SFD discretization schemeto get the second-order SFD approximation equation. We propose a four-point similarity explicit group (4-point SEG) iterative methodasa numericalsolution of the large-scale and sparse linear systems derived from SFD discretization of 2D unsteady convection-diffusion equation (CDE). To showthe 4-point SEG iteration efficiency, two iterative methods, such as Jacobiand Gauss-Seidel (GS) iterations, are also considered. The numerical experiments are carried out using three different problems to illustrate our proposed iterative method's performance. Finally, the numerical results showed that our proposed iterative method is more efficient than the Jacobiand GS iterations in terms of iteration number and execution time.
Efficient multi-keyword similarity search over encrypted cloud documents
Authors: Abdulsada Ayad I. , Honi Dhafer G. , Al-Darraji Salah
Published: July 2021

Many organizations and individuals are attracted to outsource their data into remote cloud service providers. To ensure privacy, sensitive data should be encrypted be-fore being hosted. However, encryption disables the direct application of the essential data management operations like searching and indexing. Searchable encryption is acryptographic tool that gives users the ability to search the encrypted data while being encrypted. However, the existing schemes either serve a single exact search that loss the ability to handle the misspelled keywords or multi-keyword search that generate very long trapdoors. In this paper, we address the problem of designing a practical multi-keyword similarity scheme that provides short trapdoors and returns the correct results according to their similarity scores. To do so, each document is translated intoa compressed trapdoor. Trapdoors are generated using key based hash functions to en-sure their privacy. Only authorized users can issue valid trapdoors. Similarity scores of two textual documents are evaluated by computing the Hamming distance between their corresponding trapdoors. A robust security definition is provided together withits proof. Our experimental results illustrate that the proposed scheme improves thesearch efficiency compared to the existing schemes. Further more, it shows a high level of performance.
Dynamic response enhancement of BDFIG using vector control scheme based internal model c ontrol
Authors: Memon Ahsanullah , Mustafa Mohd Wazir , Baloch Shadi Khan , Khidrani Attaullah , Ahmed Touqeer
Published: July 2021

Doublefed induction generator(DFIG) has shown tremendous success inwind turbines due to its flexibility and ability to regulate the active andreactive power. However, the presence of brushes and slip rings affects itsreliability, stability, and power quality. Furthermore, itdoes not providepromising outcomes in case of faults even in presence of the crowbar circuit.In contrast, thebrushless doubly fed induction generator(BDFIG) is a morereliable option for wind turbines than its mentioned counterpart due to theabsence of the brushes and slip rings. This research work as such attempts toimprove the dynamic performance of thevector control(VC)oriented powerwinding (PW) stator flux-based BDFIG by optimally selecting theproportional-integral(PI) gains throughinternalmodel control(IMC)approach. The proposed control scheme is utilized to regulate the speed,torque, and reactive power of the considered BDFIG independently. Contraryto the previous literature where the “trial and error method” is generallyutilized, the current research work uses the IMC for selecting the mostsuitable PI parameters, thus reduces the complexity, time consumption, anduncertainty in optimal selection. The considered BDFIG based wind turbinewith the proposed control scheme provides a better BDFIG control designwith an enhanced dynamic response as compared to that of the same withDFIG under identical operating conditions and system configurations.
Provision of Additional Food as an Effort to Handling Stunting in Children in Siwalankerto District Surabaya
Authors: Hubaedah Annah , Andarwulan Setiana
Published: July 2021

Stunting (dwarf) is a condition where toddlers have a leght or height that is less than age. This condition is measured by size or size which is more than minus two median, standar deviation of the child growth standar of yhe WHO. Stunting todllers include chronic nutrition problems caused by and lack of nutritional intake in infants. The type of research use is pre–experimental with one group design pretest post test design where the design is no control group. The population of this study were children under 59 month. Technique sampling use probability with purposive sampling method. Weight measurement were carried out before and afterthe supplementary food intervention of food other than the supplementary food. he results showed that changes in weight status of children under five according to age indicated that there was a change in weight status of children, namely 2 children became malnourished and 13 others were still in the category of acute malnutrition. The results showed that there were differences in the Weight for Age (WAZ) index status before and after complementary foods.
Nociones sobre justicia social construidos por estudiantes de fisioterapia de la Corporación Universitaria Iberoamericana
Authors: Sánchez–Alfaro Luis Alberto
Published: July 2021

En Colombia la formación de profesionales de la salud demanda promoción de formación integral, pensamiento crítico y justicia social. Para ello la Corporación Universitaria Ibe-roamericana en la carrera de Fisioterapia ha incorporado asignaturas como Desarrollo humano, Salud Pública y Bioética, entre otras, aspirando a contribuir en la construcción de una sociedad justa, respetuosa de los derechos humanos y profesionales integrales con pensamiento crítico. El objetivo es analizar las nociones sobre justicia social que han cons-truido los estudiantes de fisioterapia de la Corporación Universitaria Iberoamericana y su relación con el proceso formativo. Se realizó un estudio cualitativo de tipo comprensivo con enfoque hermenéutico, desarrollado entre febrero y diciembre de 2019. Utilizó como herramientas de recolección de información técnicas etnográficas: diario de campo, entre-vista semiestructurada y grupos de discusión combinados con técnicas de la Investigación Basada en Arte (creación artística). Los participantes fueron estudiantes de segundo, quinto y noveno semestre de fisioterapia de la Corporación Universitaria Iberoamericana. Se rea-lizó análisis hermenéutico de tipo categorial a entrevistas y creaciones artísticas (imágenes, textos, representaciones de justicia social) de los grupos de discusión (116 estudiantes en 26 grupos de discusión). En los resultados como noción de justicia social basada en la equidad y en ethos civil, los estudiantes plantean un ideal cuya finalidad es: garantizar el reconocimiento y pleno respeto de los derechos humanos; satisfacer las necesidades fundamentales humanas para una mejor calidad de vida; eliminar barreras de acceso a servicios de salud y educación. Se concluye que la justicia social se basa en un ethos civile implica pensar el respeto real a los derechos humanos, garantizar la satisfacción de las necesidades fundamentales humanas, la promoción de la calidad de vida, el respeto por la diversidad cultural y de género, el cuidado del ambiente y de todos los seres vivos.
La corporalidad en el tratamiento teo terapeútico del uso de drogas
Authors: Tibana Rios Diana Carolina
Published: July 2021

El presente artículo, explora la experiencia subjetiva del cuerpo en jóvenes en tratamiento de uso y abuso de drogas en una fundación de tipo residencial cuyo fundamento es la Teo terapia. Se realiza una lectura crítica de los discursos, las formas de disciplinamiento corporal y la constitución de las subjetividades de los jóvenes en el marco de esta forma de tratamiento con el propósito de evidenciar que más allá de la espiritualidad se genera una forma particular de entender e intervenir sobre los cuerpos. Se trata de una investigación de corte cualitativo, de alcance descriptivo, por lo cual se realizaron grupos focales y cartografías corporales como técnicas de recolección de información, en las cuales participaron jóvenes internos entre los 17 y 24 años de edad. Como resultado se encuentran prácticas de resistencia que conllevan acciones y evocan experiencias que trazan zonas donde no logra operar el discurso Teo terapéutico. Aunque se observa la firmeza y potencia de este tipo de discursos, resulta interesante cómo los sujetos encarnados se deslindan, se resisten para constituir nuevas formas de subjetivación.
Sociodinámica de los conflictos juveniles en el espacio escolar
Authors: Nahuel di Napoli Pablo
Published: July 2021

En el presente artículo se aborda la conflictividad entre jóvenes en el espacio escolar, indagando sobre los motivos por los cuales surge, los sentidos que los estudiantes le otorgan y la dinámica que adquiere. A partir de una estrategia metodológica cualitativa, se analizan 60 entrevistas en profundidad y 5 grupos focales realizados con estudiantes de dos escuelas secundarias de gestión estatal de la provincia de Buenos Aires en Argentina. En primer lugar, se explicitan brevemente las referencias conceptuales en torno a la categoría de “conflicto” que sustenta teóricamente este escrito. En segundo lugar, se presenta el análisis de cuatro ejes conflictivos mencionados de modo frecuente por los jóvenes estudiantes, a saber: 1) por los barrios de residencia; 2) por “picas” en juegos deportivos; 3) por “hablar mal” de otro(a); 4) por “un(a) chico(a)”. Se concluye que la sociodinámica de los enfrentamientos se enmarcan en figuraciones sociales particulares en las cuales los estudiantes experimentan sentimientos de superioridad e inferioridad. Esta investigación busca aportar conocimientos para elaborar mecanismos pedagógicos de resolución de conflictos dentro de las escuelas.
Aproximaciones desde el trabajo social a la restitución de derechos de las víctimas de trata de personas
Authors: Botero Gaviria Sandra
Published: July 2021

La formación profesional transita de manera imperativa hacia reflexiones cada vez más profundas sobre problemáticas que de manera emergente se posicionan en la sociedad, las mismas que hoy buscan no solo intervenir y responder a las necesidades del quehacer profesional, sino también, avanzar en la compresión y explicación de las causalidades y complejidades que integran las diferentes realidades sociales y sus impactos; siendo una de ellas la trata de personas, como fenómeno en permanente crecimiento, que requiere que desde el actuar académico propio del trabajo social se generen nuevos modelos, paradigmas comprensivos y movilizadores desde estrategias investigativas, preventivas e interventivas, reconociéndose tanto los diferentes abordajes como los planteamientos en las respuestas institucionales y contextuales a las víctimas, como sujetos de derechos.
Aprendizajes en torno a la innovación basados en los saberes y prácticas en el contexto de la Red de Jardines Sociales y la Modalidad de Educación Inicial Propia de Colsubsidio
Authors: Bejarano Novoa Diana
Published: July 2021

En las unidades de atención y educación inicial de Colsubsidio -Caja Colombiana para el Subsidio Familiar- se implementan desde hace varios años, dos importantes programas: la Red de Jardines Sociales y la Modalidad Propia de Educación Inicial. Ambos funcionan a la manera de laboratorios pedagógicos que generan innovaciones en las prácticas y propuestas de atención integral para la primera infancia, basadas en la reflexión sobre lo construido. A partir de un proceso comprensivo de sistematización fue posible reconocer, destacar y explicitar las contribuciones que realizan las experiencias desarrolladas a la garantía del desarrollo integral de la primera infancia en los territorios de incidencia de los programas, así como a la movilización social y la construcción de la política pública en el ámbito local y nacional. El presente artículo busca visibilizar dichos aprendizajes, y destacar cómo, la reflexión, la construcción colectiva y el tejido de saberes y prácticas, es la base para la innovación pedagógica, y la generación de oportunidades de movilización y enriquecimiento de la educación inicial en el marco de la atención integral para la primera infancia.
Improntas de la ruralidad en la educación inicial
Authors: Olaya Olga Lucia
Published: July 2021

Este relato pedagógico hace una aproximación a la organización del trabajo desarrollado durante 2019 en la Unidad de Atención a la primera infancia Manitas creativas, de modalidad propia de educación inicial de Colsubsidio[1], en el Municipio de Chocontá, que opera en alianza con la Gobernación de Cundinamarca. Las estrategias pedagógicas que movilizan el juego e interacción material visual, sonoro y corporal, a partir de la creación de momentos de aprendizaje propuestos por la maestra y la auxiliar pedagógica, se organizan mediante el agenciamiento del proyecto de aula, “Si de bichos e insectos se trata”, como un hallazgo temático que emerge de la observación y escucha atenta de los niños y niñas. Gracias a este proyecto se logra identificar intereses que vinculen niños y niñas de 2 a 5 años en un aula multinivel, en línea con el reconocimiento de las singularidades del contexto rural en que se desarrollan. La consolidación de la propuesta se afianza desde la identidad de la maestra y auxiliar pedagógica de la Unidad, sus trayectorias de vida, y conexiones con la ruralidad. Este relato pedagógico se aproxima a la organización del trabajo desarrollado durante 2019 en la Unidad de Atención a la primera infancia Manitas creativas, de modalidad propia de educación inicial de Colsubsidio[1], en el Municipio de Chocontá, que opera en alianza con la Gobernación de Cundinamarca. Las estrategias pedagógicas que movilizan el juego e interacción con material visual, sonoro y corporal, a partir de la creación de momentos de aprendizaje propuestos por la maestra y la auxiliar pedagógica, se organizan mediante el agenciamiento del proyecto de aula “Si de bichos e insectos se trata”, como un hallazgo temático que emerge de la observación y escucha atenta de los niños y las niñas. Gracias a este proyecto se logra identificar intereses que vinculen niños y niñas de 2 a 5 años en un aula multinivel, en línea con el reconocimiento de las singularidades del contexto rural en que se desarrollan. La consolidación de la propuesta se afianza desde la identidad de la maestra y auxiliar pedagógica de la Unidad, sus trayectorias de vida y sus conexiones con la ruralidad. [1] El programa de modalidad propia de educación inicial implementado por Colsubsidio en Convenio con la Gobernación de Cundinamarca es una propuesta de atención que está abierta a la participación simultánea de hasta treinta niñas y niños de dos a cinco años, bajo un esquema de organización multinivel. Operativamente, funciona de lunes a viernes entre las 7 a.m. y la 1 p.m., en instalaciones destinadas por las Alcaldías Locales de cada municipio. El liderazgo de la atención es asumido por una maestra y una auxiliar pedagógica, que reciben acompañamiento permanente situado y virtual, de un equipo interdisciplinar que incluye distintos profesionales: psicosocial, salud y nutrición, pedagógico, especialista en desarrollo, administrativo y de gestión.
La educación inicial un espacio para el encuentro y la co - construcción de aprendizajes
Authors: Lovera Zuluaga Monica
Published: July 2021

Este relato pedagógico constituye una síntesis reflexiva del proceso de sistematización de la experiencia de la unidad de atención ‘Mis pequeñas huellas’, que hace parte de la modalidad propia de la Caja Colombiana de Subsidio Familiar Colsubsidio[1], ubicada en la vereda la Chacua del municipio de Sibaté, en alianza con la Gobernación de Cundinamarca. El relato enfatiza en tres aspectos: la transformación de la mirada de la educación inicial en la vereda la Chacua en Sibaté con la llegada de esta unidad en el 2015; el acontecer cotidiano de esta unidad desde el proyecto de aula ‘El baúl de las preguntas’, que ha posibilitado el diálogo genuino entre las preguntas e intereses de los niños y las niñas, y la propuesta de la maestra; los procesos reflexivos de las maestras como motor de la transformación y enriquecimiento de las acciones, que dotan de sentido y estructuran rutas diversas de promoción del desarrollo integral.
Interacciones cotidianas que configuran sentidos en la educación inicial
Authors: Lovera Zuluaga Monica
Published: July 2021

Luego de aproximarse a la cotidianidad del jardín social San Miguel, ubicado en el municipio de Zipaquirá-Cundinamarca, se presenta este relato pedagógico que recoge reflexiones en torno a la complejidad que encierra el acto educativo con los niños y las niñas en sus primeros años de vida y el lugar del saber, el hacer y el ser de las maestras de educación inicial. El escrito es el resultado del análisis de la información recopilada a través de observación participante, entrevistas cualitativas y diálogos sostenidos con la coordinadora, el equipo administrativo, la gestora comunitaria, las familias, maestras y la líder pedagógica, quien acompañó especialmente el proceso de sistematización desde la sensibilidad de la palabra y la solidaridad del conocimiento adquirido con la experiencia.
Formas en que los niños y niñas se representan emocionalmente la paz. Aportes para una educación constructora de paz
Authors: Segura Sierra Sandra , Tamayo Zuluaga Diana Maria , Fernanda Muñoz Maria , Tabares López Lorena , Atehortúa Palacio Yakelinne , Ocampo Flórez Esteban
Published: July 2021

En el presente artículo se busca presentar un análisis teórico acerca de dos temas fundamentales: educación emocional y educación para la paz. Para ello se presentan diversas investigaciones enfocadas en la construcción de paz desde el ambiente escolar, partiendo de la realidad de los niños y las niñas a los que el conflicto armado y otras formas de violencia han afectado, directa o indirectamente, su existencia. A partir de los resultados obtenidos por cada uno de los diferentes investigadores en la línea de educación emocional, educación para la paz, conflicto armado y violencia, se presentarán algunos aportes teórico-prácticos para hacer de la educación un elemento fundamental en la construcción de un mundo en paz.
O Quantive Easing influenciou no retorno do mercado financeiro brasileiro? Uma análise por estudo de eventos e testes lineares e não lineares
Authors: Almeida Helberte João França , Giovanini Adilson , Saath Kleverton Clovis de Oliveira
Published: July 2021

Diante da crise do Subprime, bancos centrais de diversos países utilizaram o Quantitative Easing (QE) para estimular a economia. Este trabalho utiliza dados diários, Fevereiro de 2007 a julho de 2015, de treze indicadores do mercado brasileiro e emprega a abordagem de estudo de eventos e diferentes testes lineares e não lineares para avaliar a influência do QE sobre os retornos desses indicadores. Os resultados encontrados indicam que, independente do teste realizado, há fortes evidências de que o QE influenciou o retorno dos ativos. Contudo, a primeira fase teve maior efeito sobre os retornos dos ativos do que as demais.
Transferências intergovernamentais: o papel do contexto institucional para a sustentabilidade das dívidas estaduais
Authors: Barbosa Leandro Mendes , Rocha Fabiana Fontes
Published: July 2021

O objetivo deste artigo é verificar se a sustentabilidade fiscal dos estados brasileiros durante o período de 2001 a 2015 é afetada pelo sistema de transferências intergovernamentais. Os resultados indicam que a dívida pública não é sustentável e que ausência de sustentabilidade independe da inclusão/exclusão das transferências. Os efeitos, contudo, são heterogêneos. Os estados das regiões Sul e Sudeste, geralmente pagadores líquidos de transferências, não atendem a condição de sustentabilidade quando o saldo primário usual é utilizado, passando a atendê-la quando é avaliado o saldo primário exclusive as transferências. Já os demais estados demonstram grande fragilidade fiscal, não atendendo a condição de sustentabilidade sob nenhuma circunstância. Eles não mostram desempenho fiscal  adequado nem mesmo quando são incluídas as transferências, apesar de serem beneficiários líquidos de recursos.
Efeito das operações de hedge e especulação sobre a volatilidade dos preços de commodities agrícolas nos EUA
Authors: Santos Valéria Faria dos , Maciel Leandro dos Santos , Ballini Rosangela
Published: July 2021

Este artigo investiga o impacto das ações de hedgers e especuladores sobre a volatilidade dos retornos de preços à vista de grãos nos Estados Unidos entre 2000 e 2015 incorporando variações dos contratos futuros em modelos da família GARCH. Para verificar a ação destes agentes ao longo do tempo, os modelos foram estimados de forma recursiva. Adicionalmente, ajustou-se um modelo BEKK-GARCH para verificar os efeitos intermercados. Os resultados mostraram que a atuação de hedgers e especuladores têm impacto moderado sobre os mercados estudados, tendo maior efeito após a crise de 2008 e em momentos de redução da correlação entre as commodities.
Padrões de modernização na agropecuária brasileira em 2006
Authors: Silva Rodrigo Peixoto da , Vian Carlos Eduardo de Freitas
Published: July 2021

Este trabalho estabeleceu 9 clusters de municípios brasileiros com base em 30 indicadores de modernização agropecuária e os classificou de acordo com suas condições produtivas. Os resultados indicam forte heterogeneidade no meio rural. Mais da metade dos estabelecimentos agropecuários se enquadra nos três clusters mais vulneráveis, com condições produtivas precárias. Eles se concentram nas regiões Norte e Nordeste e representam apenas 25% do PIB agropecuário. Por outro lado, os três clusters mais modernos representam 19% dos estabelecimentos, 12% da área utilizável e 22% do emprego rural, mas representam 32% do PIB agropecuário e se concentram nas regiões Sul e Sudeste.
The impact of postponing motherhood on women's income in Brazil
Authors: Andrade Juliana Lopes , Cunha Marina Silva da
Published: July 2021

This paper investigates the impact of the postponement of motherhood on women’s earnings and gender gap in Brazilian labor market, based on data from Brazilian National Health Survey of 2013. Using the Heckman (1979) approach, the results suggest that postponing motherhood has a positive impact of 1.55% on earnings each year of postponement. By comparing men and women, the results suggest that being a woman generates a wage penalty of approximately 22%, but the postponing of motherhood can eliminate that gender gap, especially for those who are white, yellow, and higher educated.
Rotatividade de treinadores e o desempenho das equipes de futebol no Brasil
Authors: Azevedo Caio Oliveira , Almeida Aléssio Tony Cavalcanti de , Ramalho Hilton Martins de Brito
Published: July 2021

Este trabalho analisa as consequências de mudanças de treinadores no transcorrer de uma competição. Foram usados dados de nove temporadas do futebol brasileiro, com indicadores de resultado dos times rodada-a-rodada e informações de casas de apostas. A partir das estimativas obtidas, foram percebidas melhoras em várias medidas de desempenho após a substituição de treinador, considerando o jogo seguinte à mudança. No entanto, esse efeito acaba sendo estatisticamente não significativo, quando analisado sobre uma maior quantidade de jogos após a mudança. Dessa forma, verifica-se que a mudança de treinador não se mostra uma estratégia efetiva de melhoria de desempenho.
Vulnerabilidade externa e os ciclos econômicos no Brasil pós-Plano Real
Authors: Tiryaki Gisele Ferreira , Teixeira Diego Nunes , Araújo Vinícius Ferreira de
Published: July 2021

Economias emergentes dependem de um fluxo contínuo de recursos externos e são suscetíveis a ataques especulativos contra sua moeda, em razão de choques externos ou de fundamentos macroeconômicos frágeis. Este artigo tem por objetivo avaliar o impacto da fragilidade externa nos ciclos econômicos do Brasil entre 1996 e 2019. O trabalho utiliza o modelo de fator dinâmico para derivar um indicador de vulnerabilidade externa e o método dos momentos generalizado para analisar a importância da vulnerabilidade externa para as flutuações econômicas. Os resultados mostram que uma crescente vulnerabilidade externa está associada à expansão da atividade econômica no Brasil.
Oral Anticoagulants in Atrial Fibrillation Patients With Recent Stroke Who Are Dependent on the Daily Help of Others
Authors: Meya Louisa , Polymeris Alexandros A. , Schaedelin Sabine , Schaub Fabian , Altersberger Valerian L. , Traenka Christopher , Thilemann Sebastian , Wagner Benjamin , Fladt Joachim , Hert Lisa , Yoshimura Sohei , Koga Masatoshi , Zietz Annaelle , Dittrich Tolga , Fisch Urs , Toyoda Kazunori , Seiffge David J. , Peters Nils , De Marchis Gian Marco , Gensicke Henrik , Bonati Leo H. , Lyrer Philippe A. , Engelter Stefan T.
Published: July 2021

Background and Purpose:

Data on the effectiveness and safety of direct oral anticoagulants (DOACs) versus vitamin K antagonists (VKAs) in patients with stroke attributable to atrial fibrillation (AF) who were dependent on the daily help of others at hospital discharge are scarce.

Methods:

Based on prospectively obtained data from the observational Novel-Oral-Anticoagulants-in-Ischemic-Stroke-Patients-longterm registry from Basel, Switzerland, we compared the occurrence of the primary outcome—the composite of recurrent ischemic stroke, major bleeding, and all-cause death—among consecutive patients with AF-stroke treated with either VKAs or DOACs between patients dependent (defined as modified Rankin Scale score, 3–5) and patients independent at discharge. We used simple, adjusted, and weighted Cox proportional hazards regression to account for potential confounders.

Results:

We analyzed 801 patients (median age 80 years, 46% female), of whom 391 (49%) were dependent at discharge and 680 (85%) received DOACs. Over a total follow-up of 1216 patient-years, DOAC- compared to VKA-treated patients had a lower hazard for the composite outcome (hazard ratio [HR], 0.58 [95% CI, 0.42–0.81]), as did independent compared to dependent patients (HR, 0.54 [95% CI, 0.40–0.71]). There was no evidence that the effect of anticoagulant type (DOAC versus VKA) on the hazard for the composite outcome differed between dependent (HR
dependent
, 0.68 [95% CI, 0.45–1.01]) and independent patients (HR
independent
, 0.44 [95% CI, 0.26–0.75]) in the simple model (
P
interaction
=0.212). Adjusted (HR
dependent
, 0.74 [95% CI, 0.49–1.11] and HR
independent
, 0.51 [95% CI, 0.30–0.87];
P
interaction
=0.284) and weighted models (HR
dependent
, 0.79 [95% CI, 0.48–1.31] and HR
independent
, 0.46 [95% CI, 0.26–0.81];
P
interaction
=0.163) yielded concordant results. Secondary analyses focusing on the individual components of the composite outcome were consistent to the primary analyses.

Conclusions:

The benefits of DOACs in patients with atrial fibrillation with a recent stroke were maintained among patients who were dependent on the help of others at discharge.

Registration:

URL:
https://www.clinicaltrials.gov
; Unique identifier: NCT03826927.
A Bayesian hurdle quantile regression model for citation analysis with mass points at lower values
Authors: Shahmandi Marzieh , Wilson Paul , Thelwall Mike
Published: July 2021

Quantile regression presents a complete picture of the effects on the location, scale, and shape of the dependent variable at all points, not just the mean. We focus on two challenges for citation count analysis by quantile regression: discontinuity and substantial mass points at lower counts. A Bayesian hurdle quantile regression model for count data with a substantial mass point at zero was proposed by King and Song (2019). It uses quantile regression for modeling the nonzero data and logistic regression for modeling the probability of zeros versus nonzeros. We show that substantial mass points for low citation counts will almost certainly also affect parameter estimation in the quantile regression part of the model, similar to a mass point at zero. We update the King and Song model by shifting the hurdle point past the main mass points. This model delivers more accurate quantile regression for moderately to highly cited articles, especially at quantiles corresponding to values just beyond the mass points, and enables estimates of the extent to which factors influence the chances that an article will be low cited. To illustrate the potential of this method, it is applied to simulated citation counts and data from Scopus.
Seleukid Coins from the Collection of the State Historical Museum
Authors: Smirnov Svyatoslav V. , Zakharov Eugenii V.
Published: July 2021

The present paper publishes the collection of Seleukid coins from the Numismatic Department of the State Historical Museum (Moscow). It contains 118 items of several Seleukid rulers ranging from Seleukos I to posthumous issues of Phillip I.
“A Man of Intrigue but of No Virtue”
Authors: Villani Stefano
Published: July 2021

This chapter reconstructs the life of Jean-Baptiste Stouppe (1623–1692), a Huguenot of Italian origin who in the 1650s moved to England and was employed by Oliver Cromwell in important diplomatic / espionage missions. Passing into the service of Louis XIV as a soldier, he published some pro-French propaganda works aimed at Protestants, including a famous description of Dutch religious life, published in 1673, notorious for its negative portrayal of Spinoza’s philosophy. While presenting himself as a defender of Protestant orthodoxy, Stouppe was in fact a libertine with magical-alchemical interests. An unscrupulous and ambiguous figure, his intellectual trajectory is clearly inserted in what has been defined as the crisis of the European conscience.
Written Proof Between Capitulations and Ottoman Kadi Courts in the Early Modern Period
Authors: van den Boogert Maurits H.
Published: July 2021

The introduction of legal reforms in the sixteenth century that gave the Hanafi school its central place in the Ottoman legal system coincided with the arrival of new trade partners from the West, first France and later England and the Dutch Republic. The Ottoman authorities’ own emphasis on the primacy of written proof and the marginalization of oral testimony was also reflected in the privileges granted to these new arrivals from the West. Although many European ambassadors and consuls distrusted “Turkish justice”, the Ottoman legal system’s stability and predictability contributed considerably to creating favourable conditions of trade.
Milieudefensie et al. v. Shell: A Tipping Point in Climate Change Litigation against Corporations?
Authors: Hösli Andreas
Published: July 2021

The District Court of The Hague’s decision in the matter of Milieudefensie et al. v. Shell, issued in May 2021, is an unprecedented ruling, holding a fossil-fuel company accountable for its alleged contribution to climate change. The decision provides ample opportunity to discuss climate change litigation against corporations, and the legal responsibility of such actors in the climate context more broadly.
Rethinking the Historical Development of Caribbean Performance Culture from an Afro-Iberian Perspective
Authors: Dewulf Jeroen
Published: July 2021

This article advocates for a new perspective on Caribbean performance traditions by adopting an Afro-Iberian perspective. It argues that we are able to acquire a better understanding of the historical development of some of the most enigmatic Caribbean performances, including Jankunu, by taking into consideration that many of those who built the foundations of Afro-Caribbean culture had already adopted cultural and religious elements rooted in Iberian traditions before their arrival in the Americas. A comparative analysis demonstrates a series of parallels between early witness accounts of Jankunu and Iberian calenda traditions. In order to explain this, the article points to Iberian dominance in the early-modern Atlantic and, in particular, Portuguese influences in Africa. It highlights the importance of confraternities and argues that it was in the context of African variants of these mutual-aid and burial societies that elements rooted in Iberian traditions entered Afro-Caribbean culture.
Another new species of the genus Phyllodesma (Phyllodesma) Hübner, [1820] 1816 from northern China (Lepidoptera: Lasiocampidae)
Authors: ZOLOTUHIN VADIM V. , BIDZILYA OLEKSIY V. , KOSTJUK IGOR YU.
Published: July 2021

Phyllodesma permana sp. nov. is described from wastelands of northern China (Ningxia Hui AR). A new species is compared with Phyllodesma sinina (Grum-Grshimailo, 1891), Phyllodesma jurii I. Kostjuk, 1992 and Phyllodesma mongolicum I. Kostjuk & Zolotuhin, 1994. Adults and male genitalia of two latter species are illustrated, and the differences among these taxa and Ph. permana sp. nov. are discussed. The holotype will be deposited in the Insect collection, College of Life Sciences, Nankai University (Tianjin, China). A list of the nowadays known from China Phyllodesma is given.
A new species of the deep-sea shrimp genus Spongicoloides (Decapoda: Spongicolidae) from the South China Sea
Authors: ZHAO YU , XU TING , YANG WEIDI , QIU JIAN-WEN
Published: July 2021

Spongicoloides zhoui sp. nov. (Crustacea: Decapoda: Spongicolidae), a species of deep-sea hexactinellid sponge-associated shrimp, is described based on specimens collected from the Zhenbei Seamount in the South China Sea. The new species is morphologically most similar to the Western Pacific congeneric species Spongicoloides iheyaensis Saito, Tsuchida & Yamamoto, 2006 in that the ischium of the third pereiopod is unarmed and the fixed finger of the third pereiopod is armed with small teeth on the distoventral margin. However, S. zhoui sp. nov. can be distinguished from S. iheyaensis in that its female antennal basicerite has three large spines on the distolateral margin. Molecular analyses based on nuclear histone H3, and mitochondrial cytochrome c oxidase subunit I (COI), 12S ribosomal RNA (rRNA), and 16S rRNA gene fragments confirmed the placement of S. zhoui sp. nov. within a clade of Spongicoloides/Spongiocaris species, and their sequence divergences were large enough to justify the recognition of this new species.
Hall Effects on Steady Magnetohydrodynamics Flow of Cu-Water Nanofluid Through Porous Medium
Authors: Siva Kumar Reddy B. , Rao K. V. S. N. , Bhuvana Vijaya R.
Published: July 2021

It is examined the unstable magneto hydro dynamic flows of an incompressible glutinous nano fluids over a saturated absorbent media. The fluid flow is prompted by a convection temperatured accessible diminishing surfaces as well as captivating Hall impacts into discriptions. The relevant
alterations abridge the systems of non-linearly partially differential equation to the syatem of ordinarily differential equation. The flow as well as temperature dissipation peculiarities were cogitated by making use of Homotopy-Analysis methodology. The momentum, temperature as well as Nusselts
numbers were assessed also arithmeticaly referred with several non dimensionalized boundaries. This corresponds to observed that greater nano particle volume segments shrinks a momentum field. In addition the temperature together with heat dissipation rate were exacerbated for higher quantities
of Biot number.