bluuebunny/crossref_metadata_2025 huggingface dataset:
Trends in data mining research: A two-decade review using topic analysis
Authors: Zelenkov Yury , Anisichkina Ekaterina
Published: March 2021

This work analyses the intellectual structure of data mining as a scientific discipline. To do this, we use topic analysis (namely, latent Dirichlet allocation, DLA) applied to the proceedings of the International Conference on Data Mining (ICDM) for 2001–2019. Using this technique, we identified the nine most significant research flows. For each topic, we analyse the dynamics of its popularity (number of publications) and influence (number of citations). The central topic, which unites all other direction, is General Learning, which includes machine learning algorithms. About 20% of the research efforts were spent on the development of this direction for the entire time under review, however, its influence has declined most recently. The analysis also showed that attention to topics such as Pattern Mining (detecting associations) and Segmentation (object separation algorithms such as clustering) is decreasing. At the same time, the popularity of research related to Recommender Systems, Network Analysis, and Human Behaviour Analysis is growing, which is most likely due to the increasing availability of data and the practical value of these topics. The research direction related to practical Applications of data mining also shows a tendency to grow. The last two topics, Text Mining and Data Streams have attracted steady interest from researchers. The results presented here shed light on the structure and trends of data mining over the past twenty years and allow us to expand our understanding of this scientific discipline. We can argue that in the last five years a new research agenda has been formed, which is characterized by a shift in interest from algorithms to practical applications that affect all aspects of human activity.
Big data analysis of IoT-based supply chain management considering FMCG industries
Authors: Nozari Hamed , Fallah Mohammad , Kazemipoor Hamed , Najafi Seyed Esmaeil
Published: March 2021

Supply chain is one of the main pillars of manufacturing and industrial companies whose smartness can help business to be intelligent. To this end, the use of innovative technologies to make it smart is always a concern. The smart supply chain utilizes innovative tools to enhance quality, improve performance and facilitate the decision-making process. Internet of things (IoT) is one of the key components of the IT infrastructure for the development of smart supply chains that have high potential for creating sustainability in systems. Furthermore, IoT is one of the most important sources of big data generation. Big data and strategies for data analysis as a deep and powerful solution for optimizing decisions and increasing productivity are growing rapidly. For this reason, this paper attempts to examine informative supply chain development strategies by investigating the supply chain in FMCG industries as a special case and to provide a complete analytical framework for building a sustainable smart supply chain using IoT-based big data analytics. The proposed framework is based on the IoT implementation methodology, with emphasis on the use of input big data and expert reviews. Given the nature of the FMCG industry, this can lead to better production decisions.
ETIOLOGY OF BLOODY DIARRHEA IN CHILDREN AND PREVALENCE OF E. COLI O157:H7
Authors: Kareem Twana , Omer Sherko
Published: March 2021

Background 

Infectious diarrhea continues to be a health burden worldwide especially in children living in developing countries. The main etiologies of bloody diarrhea in developing regions are Entamoeba histolytica and bacteria such as Shigella and other bacteria.

Objectives 

To determine the causative agents of bloody diarrhea in children and the prevalence of Enterohemorrhagic Escherichia coli in children with bloody diarrhea.

Materials and Methods

A cross-sectional study conducted at Dr.Jamal Ahmad Rashid Teaching Pediatric Hospital in Sulaimani city from October 2018 to August 2019. We examined stool specimens from inpatient children with diarrhea using fresh mount. We further investigated the bloody stools by cultivation on several bacteriological media. Growth was identified and the causative agents were determined based on culture, Gram stain, biochemical tests, Serological test and VITEK® 2 system. Finally, we used multiplex PCR to identify EHEC O157:H7 and Shiga toxin genes.

Results

From 2589 fresh mount stool examination, 117 (4.5%) were identified as bloody diarrhea based on finding RBCs. Of the 117 cultivated stool specimens, bacteria were identified as the cause of bloody diarrhea in 73(62.4%), E. histolytica/ E. dispar in 36 (30.8 %), bacteria and E.histolytica/ E. dispar in 6 (5.1%), while in 2 (1.7%) specimen, the cause remain unidentified. The isolated bacteria were Shigella spp. (56, 69%), Slamonella spp. (11, 14%), Enteroinvasive Escherichia coli (6, 7%), Campylobacter spp. (3, 4%) and Enterohemorrhagic Escherichia coli (3, 4 %). Two EHEC showed shiga toxin type two gene.

Conclusion

Shigella spp. and E. histolytica were the most prevalent agents of bloody diarrhea in children aged 7 months to 12 years. Enterohemorrhagic Escherichia coli harboring shiga toxin type 2 gene was identified in bloody diarrhea but in fewer cases compared to other bacteria.
MOLECULAR DOCKING OF SELECTED CD22 INHIBITORS TARGETING HUMAN CD22 RECEPTOR ON B CELLS
Authors: Muhammad Hawzheen
Published: March 2021

Background 

The CD22 is a B cell restricted receptor with a critical role in the maintenance of B cell inhibition to maintain humoral immunity homeostasis. The inhibitory function of CD22 and its specific expression on B cells makes it an attractive target for B cell depletion in autoimmune diseases and B cell derived malignancies. 

Objectives 

Determine the potential affinity for binding of fifteen commercially available CD22 inhibitors targeting CD22 protein was investigated using iGemdock software.

Methods

In the present study, the binding affinities of fifteen commercially available CD22 inhibitors have been investigated on CD22 protein using iGemdock software.

Results

The results showed that CD22 inhibitor, Thapsigargin produced greater affinity for the CD22 protein with the first rank. It binds with the CD22 protein with lowest interaction energy (fitness value) of -75.465 kcal/mol. 

Conclusion

The interaction confirms that the studied inhibitors interacted with CD22 protein by building hydrogen bonds with active site residues in addition to the hydrophobic interactions. Further in vitro studies are required to confirm these results.
(G'/G,1/G)-expansion method for analytical solutions of Jimbo-Miwa equation
Authors: YOKUŞ Asıf , DURUR Hülya
Published: March 2021

The main goal of this study is obtaining analytical solutions for (3+1)-dimensional Jimbo-Miwa Equation which the second equation in the well-known KP hierarchy of integrable systems. For the (3+1DJM) equation, hyperbolic, trigonometric, complex trigonometric and rational traveling wave solutions have been constructed by applying the (G'/G,1/G)-expansion method. Then, real and imaginary graphics are presented by giving special values to the constants in the solutions obtained. These graphics are a special solution of the (3+1DJM) equation and represent a stationary wave of the equation. The (G'/G,1/G)-expansion method is an effective and powerful method for solving nonlinear evolution equations (NLEEs). Ready computer package program is used to obtain the solutions and graphics presented in this study.
Crossed modules bifibred over k-Algebras
Authors: GÜRMEN ALANSAL Özgün , EGE ARSLAN Ummahan
Published: March 2021

In this paper we examine on a pair of adjoint functors (ϕ^* ,ϕ_*)for a subcategory of the category of crossed modules over commutative algebras where ϕ_*: XMod/P → XMod/Q, induced, and ϕ^*:XMod/Q → XMod/P, pullback (co-induced), which enables us to move from crossed Q-modules to crossed P-modules by an algebra morphism ϕ : P → Q. We show that this adjoint functor pair (ϕ^*,ϕ_*) makes p∶ XMod → k-Alg into a bi- fibred category over k-Alg, the category of commutative algebras, where p is given by p(C,R,∂) = R. Also, we give some examples and results on induced crossed modules in the case when ϕ is an epimorphism or the inclusion of an ideal.
Improving sustainable supplier evaluation by an integrated MCDM method under pythagorean fuzzy environment
Authors: GÖÇER Fethullah
Published: March 2021

Sustainability plays a significant role in promoting competence and collaboration in supply chain management due to increased environmental awareness, tightened regulations, and government policies. The evaluation of sustainable suppliers and selecting the best one is indispensable for companies to promote sustainability. Due to multi-criteria nature of the supplier selection process, it has been considered as a multi-criteria decision making (MCDM) problem in many studies. In this study, a state-of-the-art MCDM method for sustainable supplier selection is developed by integrating AHP and TOPSIS techniques within the Pythagorean Fuzzy Sets (PFSs) linguistic setting. A Group Decision Making (GDM) environment is utilized due to superiority of group consensus over individual decisions. Finally, an apparel industry example is used to illustrate the effectiveness and feasibility of the proposed sustainable supplier selection method. A comparison with existing techniques and sensitivity analysis are done to verify and validate the given outcome.
Proposed nonparametric tests for the ordered alternative in a completely randomized and randomized block mixed design
Authors: GÜL Hasan Hüseyin , BAYRAK Hülya
Published: March 2021

Two nonparametric tests are proposed for the mixed design consisting of a randomized complete block and a completely randomized design to test for k nondecreasing treatment effects. The Hollander test and the Page test are used in randomized complete block design and completely randomized design, respectively. We compared the performance of the proposed tests against the Z_CombI, Z_CombII Page and Hollander tests. A Monte Carlo simulation study was conducted comparing the estimated powers of the tests 3, 4 and 5 treatments under various treatment effects and three different underlying distributions. In conclusion, the two proposed tests have higher powers than the Page, Hollander, Z_CombI and Z_CombII tests.
The effect of penicillin-induced epileptiform activity on proinflammatory cytokines levels in the rat brain
Authors: FİLİZ Ahmet Kemal , KARABULUT Sebahattin
Published: March 2021

Emerging evidence indicates a pathogenic role of protracted neuroinflammation in the various neurodegenerative diseases, including epilepsy. Neuroinflammation may contribute to neuronal hyperexcitability underlying seizure formation. The current research aims to examine the changes in the levels of proinflammatory cytokines such as interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in the penicillin epilepsy model. In the present study, 12 male Wistar albino rats were randomly divided into two groups as sham and penicillin epilepsy model. Seizures were induced with the intracortical (i.c.) single microinjection 500 IU of penicillin-G into neocortex. Rats were decapitated after observing the cortical epileptic activity and brains were removed by craniotomy. Proinflammatory cytokines (TNF-α and IL-1β) were measured by using ELISA methods in the cortical and hippocampal brain regions. Penicillin significantly up-regulated the expression of IL‑1β and TNF-α in the rat cortex, but did not affect the hippocampal cytokines levels. This study is indicative of the neuroinflammatory potential of cortical penicillin administration.
Hydrothermal synthesis and crystal structures of a novel Keggin-type polyoxometalate based on 1,10-phenanthroline
Authors: UÇAR Asuman , FINDIK Mükerrem , KOÇAK Nuriye , ÇOLAK Alper , ŞAHİN Onur
Published: March 2021

Herein a novel inorganic-organic hybrid Keggin-type heteropolymolybdate [Ni2Na(C12H8N2)4(BMo12O40)(H2O)2] (1) has been synthesized under hydrothermal conditions in aqueous solution. The cyrstal structure was fully characterized by powder X-ray diffraction (XRD), elemental analysis, Fourier-tranform infrared spectrum (FT-IR), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM) analysis. Single crystal X-ray structural analysis demonstrates that the complex consists of a Keggin anion [BMo12O40]5− polyanion, four 1,10-phenanthroline (C12H8N2) ligands, two Ni(II) ions, two Na(I) ions and two aqua ligands. The experimental powder X-ray diffraction (XRD) result of the crystal is consistent with the calculated data. The SEM image shows that the compound crystals have a cubic structure.
pantalla rosa
Authors: Stengel Pena Natalia
Published: March 2021

El texto presenta algunas manifestaciones contemporáneas del mercantilismo que dicen promover el feminismo y que han aparecido de forma mediática y en publicidad, ante todo. En un intento por nombrar este fenómeno, se propone el término de la pantalla rosa; este ha sido inspirado por el análisis de la posmodernidad que realizó Jean Baudrillard en La transparencia del mal (1991). Para ejemplificar el funcionamiento de la pantalla rosa se analizarán críticamente algunas campañas publicitarias promovidas en América Latina entre 2018 y 2019, las cuales buscaron posicionarse a favor de la igualdad entre mujeres y hombres, a saber: la famosa “Juntas imparables” de Nike, las playeras feministas ofrecidas por marcas de fast fashion como Inditex o H&M y, finalmente —para introducir el caso mexicano—, los carteles de Vicky Form con los que promovieron la campaña #PonteEnMisCalzones. Se trata de llevar a cabo un análisis visual a partir de las categorías propuestas desde los estudios críticos feministas, cuyo propósito es promover una discusión respecto al contenido presente en diversos productos de publicidad y su relación con el feminismo. Por este camino, se observa que las tres campañas cometen omisiones, carecen de perspectiva de género y son incoherentes en relación con la agenda feminista, insertándose así en lo que se ha dado en llamar capitalismo rosa.
"Sopa de Wuhan"
Authors: Carmona Sánchez Luis Alberto
Published: March 2021

Con la presente reseña se propone evidenciar los alcances teóricos y prácticos a los cuales, desde varias disciplinas de las Ciencias Sociales y Humanas, han arribado los autores antologizados en Sopa de Wuhan, compilado por Pablo Amadeo (2020). Para ello, se revisan sus fundamentos conceptuales y se sigue la línea argumentativa que allí presentan. De esta manera, el presente escrito se elabora a partir de algunos de los textos que en el mencionado libro se recopilan; es decir, solo sobre aquellos que tienden al análisis crítico sobre el sistema capitalista o advierten la posibilidad de ser optimistas frente a la mundial dificultad que se está configurando a raíz de la pandemia por el covid-19.
Inter-American Development Bank Ninth Annual Report 1968
Authors:   Inter-American Development Bank
Published: March 2021

The Ninth Annual Report contains a review of the Bank's operations in 1968.
Congestión urbana en América Latina y el Caribe: Características, costos y mitigación
Authors: Calatayud Agustina , Sánchez González Santiago , Bedoya Maya Felipe , Giraldez Zúñiga Francisca , Márquez José María
Published: March 2021

Este documento presenta el primer análisis exhaustivo para la región acerca las características y costos de la congestión urbana en América Latina y el Caribe, con resultados para las áreas metropolitanas de Bogotá (Colombia), Buenos Aires (Argentina), Ciudad de México (México), Lima (Perú), Montevideo (Uruguay), Río de Janeiro (Brasil), San Salvador (El Salvador), Santiago (Chile), Santo Domingo (República Dominicana) y Sao Paulo (Brasil). Utiliza big data y ciencia de datos para elucidar la dinámica de la congestión en cada ciudad y sus costos directos e indirectos para la sociedad. Con el fin de mitigar estos impactos, el documento reúne cinco grupos de medidas de política pública: (i) instrumentos de gestión de tráfico; (ii) políticas que restringen el uso del vehículo particular; (iii) políticas que promueven el uso del transporte público, el transporte activo y el transporte compartido; (iv) planificación integrada de la movilidad y el uso del suelo; y (v) políticas para la gestión de la logística urbana. Concluye con recomendaciones sobre las medidas más adecuadas y la secuenciación de las mismas para reducir la congestión en las grandes ciudades y las megaciudades de la región.
Ocular surface changes in Graves’ ophthalmopathy
Authors:   Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China, Sun Rou , Fan Xian-Qun ,   Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China
Published: March 2021

Many patients with Graves' ophthalmopathy (GO) suffer from dry eye syndrome (DES), and this is one of the most common reasons of eye discomfort in patients with GO. The prevalence of DES in patients with GO is significantly higher than normal subjects. The ocular surface changes involving changes in tears, cornea, conjunctiva and glands occur in GO patients. However, the mechanism of how DES occurs in GO still remains unclear. In this review, the ocular surface changes were illustrated and analyzed the reasons for high prevalence of DES in GO patients.
Escala de Estilo de Gestão para Produtores Rurais
Authors: Thiago Fernando , Kubo Edson Keyso de Miranda
Published: March 2021

A produção rural nacional tem respondido por grande parte do PIB brasileiro e é considerando um dos principais players de exportação de commodities. A gestão das propriedades rurais tem sido assunto de interesse dos produtores, visto que as questões tecnológicas têm sido atendidas. Para tanto, o objetivo desta pesquisa foi validar uma escala para avaliar o estilo de gestão dos produtores rurais brasileiros. Tratou-se estilo de gestão como a manifestação das características de se administrar a interação entre as pessoas e entre pessoas e a estrutura, de um ou coletivo de gestores de uma determinada organização. Foram considerados os fatores liderança, decisão, comunicação, controle, planejamento e motivação como seus componentes. Os dados foram obtidos por meio da técnica survey. Para validação semântica, as sentenças foram submetidas ao teste piloto de dez juízes experientes em gestão de organizações agropecuaristas, sendo oito modificadas. A validação empírica foi realizada com a aplicação do instrumento de avaliação a 101 gestores de propriedades rurais, posteriormente submetidas aos testes de análise fatorial confirmatória e análise fatorial exploratória unidimensional. A solução final para o instrumento ficou composta por 22 sentenças, distribuídas em seis dimensões. As limitações da pesquisa são pertinentes à amostragem por conveniência. O instrumento final é indicado para aplicação na gestão das organizações rurais, permitindo a realização de diagnóstico organizacional, como também pode ser utilizado para investigações científicas.
Big data como Elemento Crítico para Performance em Organizações Orientadas para o Mercado
Authors: Rech Eduardo , Casalinho Gilmar D'Agostini Oliveira , Da Silveira Rodrigo Heldt
Published: March 2021

A orientação para o mercado, que promove a aplicação de uma filosofia de atuação direcionada para o cliente, pode influenciar positivamente o desempenho das organizações. Nesse contexto, a quantidade e o fluxo de informação possui importância, considerando que é elemento fundamental para estabelecimento da inteligência de mercado que, por sua vez, é condição sine qua non para a orientação para ao mercado. Com o aumento da disponibilidade de dados desagregados e a evolução dos métodos para análise de tais informações, a capacidade de explorar grandes volume de dados (big data) torna-se relevante para suportar decisões de marketing. Diante disso, o presente artigo tem como objetivo estabelecer as bases teóricas para a determinação da relação entre as variáveis orientação para o mercado e desempenho organizacional moderada pela variável capacidade de uso de big data. Como resultado, é realizada a proposição de um framework que represente as relações entre as variáveis orientação para o mercado, desempenho organizacional e big data.
Sífilis congênita no estado de Pernambuco: uma análise de tendência e das respostas governamentais 2008-2017
Authors: Silva Laryssa Cristina Alves da , Paz Bruno Batista Pereira da , Duarte Matheus Santos , Souza Carlos Dornels Freire de , Quirino Túlio Romério Lopes , Machado Michael Ferreira
Published: March 2021

This article sought to describe the profile of congenital syphilis (CS) cases in Pernambuco and to evaluate government responses from 2008 to 2017. This is a cross-sectional study, with data obtained from the Department of Chronic Conditions and Sexually Transmitted Infections / MS. A trend analysis was conducted with the Joinpoint program and the following variables were adopted: maternal age group, maternal race / color, maternal education, moment of diagnosis of maternal syphilis, maternal treatment scheme, treatment of the mother’s partner and performance of prenatal. From 2008 to 2017, 9866 cases of congenital syphilis were registered in the state of Pernambuco, the numbers of cases showed an increasing trend over the time line. Out of the total, 75% (n = 7405) of women with a notified outcome of CS performed prenatal care. But only 36.9% (n = 3642) of cases of syphilis during pregnancy were diagnosed. As for the treatment performed, 57% (n = 6551) were done inappropriately. The data reflect the need for adjustments in prenatal care in Pernambuco, as well as the strengthening of actions aimed at controlling this indicator
Práticas, saberes e intervenção: prevenção e controle de mosquitos vetores entre escolares de Maceió/AL
Authors: Da Silva Karwhory Wallas Lins , Gomes Daniela Calumby De Souza , Da Silva Janaila Cristina Braz , Oliveira Jéssica Silva Alves , Da Silva Kézia Kewyne Lins , Silva Sâmea Keise de Oliveira , Rocha Thiago José Matos
Published: March 2021

Infectious and Parasitic Diseases are a global public health problem. In the State of Alagoas the presence of many rivers, streams, lakes and lagoons favor the proliferation of mosquitoes. In this work we sought to intervene in the maintenance of the health and environment of a school community contributing to the prevention and combat of vector mosquito breeding sites (Aedes sp., Lutzomya sp. Anopheles sp. and C. quinquefasciatus). The implementation of the extension project was approved by the research ethics committee of cesmac university center under no. 2,080,261. A questionnaire containing 26 specific questions about diseases and their vector mosquitoes was applied. Later, lectures were held on the diseases. We also offered a workshop for the construction of the mosquito net and showed a documentary from Fio Cruz. 42.66% of the students were male and 57.34 %were females, the age group ranged from 14 to 22 years. 97.90% of the garbage generated in their homes is taken to the landfill. Fortunately, 39.86% of participants believe that a clean house avoids mosquito foci and 98.60% know that eliminating standing water is important to fight mosquitoes. During intervention actions, students were interested in learning about the consequences of diseases and ways to prevent mosquito proliferation. The results show that students know the importance of avoiding mosquitoes and also know what to do to prevent the proliferation of vector mosquitoes. Therefore, they can be multipliers of good health and environmental practices.
Análise Exergoeconômica de um sistema de trigeração de energia operando com um Ciclo Rankine Orgânico
Authors: Figueredo Thiago De Souza , De Medeiros Neto João Luiz , Marques Adriano Da Silva , Dos Santos Carlos Antônio Cabral
Published: March 2021

This work presents the results of the energetic, exergetic and exergoeconomic evaluation of a trigeneration system which is composed of an Organic Rankine Cycle (ORC), a simple effect Absorption Refrigeration System (SRA) and a boiler. The proposed system is driven by the residual heat of an industrial process. A computational code was developed on the EES (Engineering Equation Solver) platform to solve the thermodynamic and exergoeconomic equation of each equipment. The SPECO method (Specific Exergy Costing) was used for the exergoeconomic evaluation. Results indicated which equipment needs optimization in order of priority. The results show that the greatest destruction of exergy occurs in the ORC steam generator (56% of the total), followed by the condenser that presented an exergy destruction of 33%. Conversely, the pump and expander performed better, with low exergy destruction values. The results of the exergoeconomic evaluation also indicate that the steam generator and condenser from ORC need to be optimized before any other equipment, as they obtained the lowest values of the exergoeconomic factor (fk) and the highest values of the specific relative cost (rk).
Desenvolvimento de recursos visuais para o aprendizado de alunos surdos: teoria atômica de Dalton
Authors: Lira Andrea De Lucena , Monteiro Regina De Fátima Freire Valentim , Conserva Katia Michaele , Paiva Marcos Vasconcelos , Campos José Lucas Da Costa
Published: March 2021

This work aims to present the production of teaching video materials with the translation in Libras carried out in a Scientific Initiation Project. We approach Dalton’s Atomic Theory, an integral part of the Atomic Theories content, contemplated by the Atomicity for the Deaf project carried out by the Federal Institute of Education, Science and Technology of Paraíba (IFPB), Campus João Pessoa, theoretically based on cultural studies on the deaf, considering visual experience and Libras as the main cultural artifacts of this community. The project was guided by the following methodological steps: research on the development of the aforementioned atomic theory, definition of the sequence of the concepts covered, script writing, image research for the elaboration of PowerPoint slides, content study and discussion of the translation into Libras, recording of the translation, audio recording, image processing, final editing and availability on the website. The final product consists of a set of video lessons in Libras, enabling linguistic accessibility to the deaf audience
revolución de QUEST Cambio de estrategia como sinónimo de éxito
Authors: Zuluaga Gómez Leidy Vanessa , Manfredi Luciana
Published: March 2021

Una estrategia de mercadeo llevada a cabo eficientemente por las empresas, es un importante componente que agrega valor a su ventaja competitiva.  Este estudio de caso analiza una empresa colombiana que ha desarrollado la estrategia de forma exitosa, permitiéndole posicionarse y conquistar nuevos segmentos del mercado en Colombia. Primero, se introduce una revisión de la literatura sobre posicionamiento de marca, fidelización del cliente y mercadeo experiencial. Luego, se desarrolla el estudio de caso basándose en entrevistas en profundidad a personas claves de la empresa. A partir de dichas entrevistas se obtuvo información acerca de cómo ha sido la planeación y la ejecución de la estrategia y sus resultados. Se concluye que el plan realizado por la empresa fue eficiente y exitoso puesto que le permitió cumplir con sus objetivos de posicionamiento de mercado.
Congreso Institucional de Investigaciones: un homenaje a los graduados distinguidos de la Escuela Colombiana de Medicina
Authors: Soriano W. Alejandra
Published: March 2021

Entre el 17 y el 19 de septiembre se celebró en la Universidad El Bosque la XXV versión del Congreso Institucional de Investigaciones. En esta oportunidad, el evento hizo un reconocimiento a egresados destacados de la Escuela Colombiana de Medicina. Durante los tres días del encuentro, los docentes y estudiantes compartieron los resultados de sus actividades de investigación en todas las áreas del conocimiento.
Nadando contracorriente: las ciencias de la complejidad como apuesta transdisciplinar
Authors: Contreras Vásquez Laura I. , García Ana Camila
Published: March 2021

Ana Camila García es una socióloga que lleva varios años nadando contracorriente, trabajando con una apuesta diferente a las corrientes más clásicas de las Ciencias sociales. Así como ella, varios investigadores de distintas ramas de las Ciencias sociales y naturales le apostaron a la investigación y a la construcción del conocimiento no lineal. Ese que explica lo complejo de la vida, lo que aún las Ciencias exactas no han podido explicar, los misterios de la creación. Con este enfoque de estudio, analizan diversos problemas de forma colaborativa, desde sus distintas aristas. Las ciencias de la complejidad están causando una revolución en la forma de aproximarse al conocimiento, y García ya hace parte de esta revolución.
La praxis del diseño industrial ¿Factor para el desarrollo económico colombiano?
Authors: Quintana Guerrero Boris , Alba Siboche Nicole Vanessa , Melo Argüello Juan Sebastián
Published: March 2021

Colombia es considerado un país con poca innovación, que basa su economía en la explotación de materia prima sin valor agregado, además, la industria nacional -manufacturera- no es estable, en esta predominan las MIPYME, a pesar de esto, no son exitosas, al igual que las exportaciones. Así, este artículo comprende el estado de la industria colombiana, y además las falencias de la misma relacionadas al papel del diseñador industrial, analizando la situación actual y los factores que ha llevado a esto, para entender cómo se ven involucradas, este artículo usa la metodología de investigación sistemática y observación directa, en este caso de lo macro a lo micro, entendiendo el contexto mundial, latinoamericano y nacional, en el caso colombiano se disgregó el comportamiento del diseñador y de esta manera se distinguen los entes que afectan el desarrollo de la profesión, entendiéndolos como estado, academia e industria.Por lo tanto, una de las causas por las cuales se desaprovechan los tratados de libre comercio tiene que ver con que las MIPYME no están preparadas para competir en el mercado internacional, lo que causa este fracaso, es la poca implementación de innovación. Esto ocurre principalmente porque ni los empresarios, ni los profesionales de diseño, tienen conocimiento de la importancia de intervenir de manera conjunta en este campo, por consiguiente, no existe una alianza estratégica conformada por el estado, la academia y la industria, que permita la participación exitosa del país en el mercado extranjero, sumada a la falta de cultura de diseño y los vacíos en preparación académica.
Horizontes de desarrollo
Authors: Jaimes Talero Santiago
Published: March 2021

En el siguiente artículo, se considera la solución a un problema que países como Colombia enfrentan regularmente: La falta de desarrollo y producción del país. Se miran distintas alternativas, abordadas desde una perspectiva científica y social para dar pie a lo que se podría denominar como “cambio”, redireccionando el pensamiento hacia un futuro de progreso en todas las áreas posibles
Comunicación en el aula
Authors: Gutiérrez Sastoque Diana Patricia
Published: March 2021

En este artículo se presentan sustentos teóricos en torno al tema relacionado con la comunicación en el aula; al realizar las revisiones teóricas, se hace necesario explicitar lo concerniente en primera instancia a la conceptualización de comunicación, entendida como una acción dinámica que ubica a los individuos. Además, se abordará la interacción comunicativa desde varios autores que permiten comprender el tema desde la diversidad de posturas teóricas. Luego se abordarán las perspectivas de la teoría de la comunicación describiendo sus postulados, y por último se abordará el tema de la comunicación en el aula, ahondando en los tipos de comunicación que existen en la educación.
Análisis hidrológico de la cuenca del rio calandaima y modelamiento hidráulico para el sistema de suministro de agua para la vereda san antonio en apulo cundinamarca
Authors: Forero Buitrago Gonzalo Alberto
Published: March 2021

El presente artículo, es el resultado del análisis de la cuenca del río Calandaima, ubicado en Cundinamarca, realizado con la finalidad de evaluar la viabilidad hidrológica del río Calandaima, para realizar una derivación adicional de 2 litros/segundo a una captación de agua ya existente de 8 litros/segundo. El presente informe, evalúa la captación total desde el río, teniendo en cuenta sus caudales, según los datos históricos de las estaciones meteorológicas existentes de la Corporación Autónoma Regional de Cundinamarca (CAR). La captación de agua del río, tiene como fin último, abastecer a 340 habitantes, que no tienen acceso al recurso. A dicho caudal derivado del río, se le realizará un tratamiento, para que cumpla con los parámetros fisicoquímicos establecidos por la norma al llegar al punto de abastecimiento final de la población a ser beneficiada, estudio que no se presenta en el presente artículo. Dentro del presente artículo, se utiliza software especializado, para realizar la evaluación de los datos de la cuenca, datos que se presentan de manera gráfica para hacer más fácil su análisis y presentar mejor los resultados obtenidos. Se estudian, por tanto, las variables hidrológicas para verificar la disponibilidad de agua en la cuenca, según su geomorfología. Además de esto, se realiza una modelación hidráulica con el software “Pipe Flow Expert”, donde se selecciona el sistema de bombeo y el diámetro de las tuberías, para alcanzar la altura y presión necesaria para llegar a los 2 tanques de suministro elevados, que se tienen contemplados para el abastecimiento de la población rural de San Antonio.
Domestic Heating: Can Hemp-Hurd Derived Pellet Be an Alternative?
Authors: Morselli Nicolò , Puglia Marco , Pedrazzi Simone , Tartarini Paolo , Allesina Giulio
Published: March 2021

Among the renewable sources, residual woody biomass from agricultural crops is becoming of great interest due to its lower environmental impact and one of the most growing agricultural sector, of the last decade, is the hemp industry which generates several kind of byproducts. In this paper, a blend of 50% of hemp-hurd and 50% of fir sawdust was pulverized and pelletized. The pellets were burned into a domestic pellet stove (9 kWth maximum nominal thermal power output) at different biomass flowrates. To compare results with a commercial-grade pellet, the tests were repeated by fueling the same stove with A2-grade pellets. Results shown that the pellet mixture 50/50 of fir sawdust and hemp-hurd is suitable for the commercial pellet stove used and that the slightly higher amount of ashes (2.7%), compared to pellet A2 (<1.2%), can be handled by the self-cleaning fire chamber. Comparable results were also obtained in regards with the stove global efficiency which ranged from 90.8-92.3% for the hemp pellets and 91-94% for the A2. A significant difference was noted in the biomass flowrate where, during the tests with hemp-hurd pellets a lower value was obtained (-20%) compared to A2. This resulted into lower power input in the stove and lower performances at the same nominal power output.
The Utility of Morphometric Parameters Extracted from SAR Radar Images in the Monitoring of the Dynamics of the Danube Island System, Giurgiu-Călăraşi Sector, Romania
Authors: Hachemi Kamel , Grecu Florina , Ioana-Toroimac Gabriela , Grigorie-Omrani Ştefania , Ozer André , Kuzucuoglu Catherine
Published: March 2021

The Danube islands system is continuously undergoing real degradations caused by natural and anthropogenic processes, thus causing a weakening of the biological potential and generating ecological and socio-economic imbalances. The lack of frequent data on the morphometric parameters of the islands in this region constitutes a major gap for monitoring, understanding and diagnosing the state of their evolution. The aim of this work is to show the importance of morphometric parameters extracted from SAR radar amplitude images in the monitoring of the dynamics of the Danube island system, along the Giurgiu-Călăraşi sector, at the frontier of Romania – Bulgaria. This study conducted by extraction of islands allowed us to detect and monitor the evolution of each island and sub-island, between 1995 and 2009, with great precision. The results obtained showed a displacement of the island system in the South-East direction with an average annual velocity of about 1 m/year and sediment accumulations with an average radius velocity estimated at 1.34 m/year during this period of 14 years. The increase of sediment accumulation during the studied period is due to river bank erosion and to the major floods produced in 2005 on the tributary rivers and especially those of 2006 on the Danube River.
Three-Hour-Ahead of Multiple Linear Regression (MLR) Models for Particulate Matter (PM10) Forecasting
Authors: Mansor Amalina Abu , Abdullah Samsuri , Dom Nazri Che , Napi Nur Nazmi Liyana Mohd , Ahmed Ali Najah , Ismail Marzuki , Zulkifli Mohammad Fakhratul Ridwan
Published: March 2021

The increase of air pollutants emission through anthropogenic activities and natural phenomena in the atmosphere can give an adverse impact on human health especially to some groups of people such as children, the elderly, and people that have cardiovascular problems. Multiple Linear Regression (MLR) model establishments for the particulate matter (PM10) forecasting can be useful, as it provides early warning information to the local authorities and the communities. We aim to develop MLR models for PM10 forecasting in Peninsular Malaysia, specifically in the southern part. In this study, the hourly data of PM10, meteorological factors, and gaseous pollutants from the year 2009-2011 had been used. As a result, the next first hour of the MLR prediction model, PM10,t+1 has been selected as the best-fitted model as compared to the second and third prediction hour models, PM10,t+2, and PM10,t+3, respectively. The PM10,t+1 model was explained 61.4% (R2=0.614) variance in the data which is higher compared to model PM10,t+2 and PM10,t+3 with 42.3% (R2=0.423) and 34.7% (R2=0.347), respectively. Thus, the validation of PM10, t+1 model also has a high accuracy value of R2 (55.1%) as compared to the other two models. We conclude that the development of MLR models is adequate for PM10 forecasting in the industrial area.
Increasing Shallot Production in Marginal Land Using Mulches and Coconut Husk Fertilizer
Authors: Lasmini Sri Anjar , Rosmini Rosmini , Lakani Irwan , Hayati Nur , Nasir Burhanuddin Haji
Published: March 2021

The study aimed to obtain the type of mulch and the doses of liquid organic fertilizer proper waste coconut husks in modifying microclimate around crops to obtain the maximum yield of shallot in the dryland. The research was used a factorial randomized complete block design consisting of two factors. The first factor consisting mulches, M1 = silver-black plastic mulch and M2 = straw mulch. The dose of liquid organic fertilizer from coconut husks was the second factor. It is consisting of S0 = without fertilizer, S1 = 500 L ha-1, S2 = 750 L ha-1 and S3 = 1000 L ha-1. The results showed that the application of a combination of mulch and liquid organic fertilizer coconut husk waste significantly affected plant height, number of leaves per plant, number of tillers, and the bulb yield. Straw mulch with coconut husks waste dose of 1000 L ha-1 resulted in plant height, number of leaves per plant, number of tillers and highest bulb yield compared with other treatments. The highest bulb yield was obtained with 9.63 t ha-1.
El Programa De Vuelta a Casa y sus repercusiones cotidianas: el acceso a un ingreso y los entrecruzamientos de los territorios existenciales en la vida comunitaria
Authors: Silva Jorge Luiz da , Lucena Marcela , Lyra Jorge , Mota Mirella de Lucena , Bessoni Enrique , Rego Claudjane Pereira do , Silva Juliana Keila Jeremias da
Published: March 2021

Este artículo analiza las repercusiones del Programa De Vuelta a Casa, un programa brasileño de transferencia de recursos para personas que reciben el alta de hospitalizaciones psiquiátricas. El objetivo fue relevar las repercusiones de este programa en sus beneficiarios, con relación a las implicancias de acceder a un ingreso para su vida cotidiana, y poner en evidencia algunos entrecruzamientos de sus contextos de vida con los territorios existenciales: sexualidad, género, envejecimiento y violencias urbanas. Entre 2017 y 2018, se realizó un estudio evaluativo, centrado en los itinerarios de vida de 20 personas. Como resultado, se observó que acceder a un ingreso es fundamental para la experiencia de vivir fuera del hospital, para el ejercicio del intercambio material y para incursionar en el ámbito comunitario. Se discute acerca de los desafíos de garantizar un apoyo asistido a los beneficiarios con base en la contractualidad y calificación de los procesos de rehabilitación psicosocial, articulados a los entrecruzamientos que marcan los modos de vivir.
THE INFLUENCE OF DIFFERENTIATED MATHEMATICAL TASKS ON STUDENTS' LOGICAL-COMBINATORIAL THINKING IN ELEMENTARY MATHEMATICS TEACHING
Authors: Rakic Dunja , Lazic Bojan , Maric Mia
Published: March 2021

The aim of this research was to examine the influence of differentiated tasks on the development of logical-combinatorial thinking abilities of the first grade of primary school students, using the experimental-research method. The research was conducted on the sample (N=60) chosen from the population of first-grade students of primary school "Nikola Tesla" in Novi Sad. Obtained research results showed the high influence of differentiated mathematical problems on students' logical-combinatorial thinking and functional knowledge in elementary mathematics education. The results' practical implication mirrors the possibility of their application in the domain of the improvement of students' cognitive abilities and functional knowledge from the very beginning of the educational journey.
Modeling of Inverse Kinematic Analysis of Open-Source Medical Assist Robot Arm by Python
Authors: GÜL Mehmet
Published: March 2021

Today, the epidemic diseases such as COVID-19 spreads very fast in the globalizing world and lethal effects on human health have had a noticeable effect on the health sector. For this situations, various disciplines have had different studies to minimize the effects of the epidemic. In such cases, it is a separate requirement that the use of the opportunities brought by technology. In this study, the kinematic analysis of the open-source robot arm was especially examined in terms of reducing the workload of individuals working in the healthcare sector. The open-source robot arm is articulated and has 5 degrees of freedom. The kinematic analysis is very important for determination of the working space of the robotic systems. The inverse kinematic analysis was done with Python programming language and the control module was developed to check the analysis. The control module shows the angle values depending on the joints of the robot arm. It is also shown the Px, Py, and Pz positions obtained depending on the position of the end effector in 3D space. On the other hand, Euler angle values are also specified, which are based on the position of the last position taken by the joints of the robot arm in the 3D space. In the study, the geometric approach method was used that is still popular in the inverse kinematic analysis. It is hoped that this study will inspire the development and use of professional and industrial kinds of the open-source robot arm.
Filler Type and Particle Distribution Effect on Compact Properties of Polymer Composites
Authors: POYRAZ Bayram , EREN Şevki , SUBAŞI Serkan
Published: March 2021

This study reports the effects of silica (S), quartz (Q), and basalt (B) fillers on the chemical, thermal, and mechanical properties of unsaturated polyester (PE) composites. In the study, fillers were selected as same class grain distribution and mixed with orthophtalic based PE resin to produce composites. The thermal characterization of the composites was determined with thermogravimetric and thermal conductivity. Chemical characterization was carried out with FT-IR. Compressive strength was investigated with Universal Testing Machine. SEM device was used to investigate the morphological alterations of the composites. Also, statistical analysis was carried out for thermal conductivity and mechanical results. At the end of the present study, some minor chemical alterations were seen in FT-IR after the interaction of the fillers and PE resin. Thermal stability decreased after adding fillers. The thermal conductivity and thermogravimetric analysis were not agreed with each other that higher thermal conductivity was seen in the PE-Q composites. The compressive strength of filler-based composites was higher than that of the neat PE composite whereas the higher compressive strength was obtained in the PE-Q. This study confirms the applicability of various fillers as a reinforcing agent in the polymer.
Newly Axial Silicon(IV) Phthalocyanine Photosensitizer: Design, Synthesis and Photochemical Properties
Authors: EKİNEKER Gülçin , YANIK Hülya
Published: March 2021

Used as photosensitizer in photodynamic therapy, phthalocyanines exhibit their long wavelength absorption and the ability to produce high singlet oxygen for tumor destruction with 650 to 800 nm fluorescence.Phthalocyanines with their long wavelength absorption and fluorescence from 650 to 800 nm exhibit their ability to produce high singlet oxygen for the destruction of tumors. In this study, new axial substituted silicon(IV) phthalocyanine (4) was synthesized. Unsubstituted dichlorosilicon phthalocyanine was synthesized from 1,3-diiminoisoindoline via cyclotetramerization. The axial substitution reaction was carried out using dichlorosilicon(IV) phthalocyanine and excess of 2-methoxyethanol. Structural characterization of this new axial-substituted silicon(IV) phthalocyanine by IR, mass, and UV-Vis spectroscopy were performed. Photochemical properties were investigated for cancer therapy. In this study, we found that axial substituted silicon(IV) phthalocyanine (4) may be promising PDT agent.
The Impact of European Green Deal on Turkey's Iron and Steel Industry: Decomposition Analysis of Energy-Related Sectoral Emissions
Authors: BEKTAŞ Abdulkadir
Published: March 2021

The European Union has put forward a vision under the EU Green Deal’s name to take the lead in its priorities, fulfill the Agreement’s criteria, and subsequently accept the first EU climate law on March 5, 2020. The law framework aims to impose tax obligations on consumption goods imported by the EU from abroad, especially on energy-intensive sectors, by applying the carbon border adjustment mechanism. Our main goal is to determine what kind of measures can be taken to ensure that the iron and steel industry is least affected by the EU border carbon regulation. We are an absolute exporter, are least affected by the EU carbon border adjustment. For this reason, the change in energy-related greenhouse gas emissions from the iron and steel industry from 1998 to 2018 was analyzed using the LMDI model to investigate the potential effects of carbon border adjustment in the iron and steel industry. The analyzes were made with five significant factors that determine the change of emissions. These factors are; changes in economic activity, activity mix, energy intensity, energy mix, and emission factors. Analysis has suggested that the economic activity effect has raised CO2 emissions. This method indicates that the energy intensity’s impact could be the first key determinant of GHG emissions. Turkey should attempt to implement low-carbon development policies and reduce energy-related emissions in the iron & steel sector are the least impacted by the EU’s carbon border adjustment.