bluuebunny/crossref_metadata_2025 huggingface dataset:
Tradición: una nueva razón para alimentar las palomas urbanas (Columba livia; Columbiformes: Columbidae), y cómo controlarlas de manera sostenible
Authors: Cabalceta Andrea , Barrientos Zaidett
Published: October 2019

Introducción: La Paloma de Castilla, Columba livia, es considerada una plaga en muchas ciudades del mundo. En las ciudades las personas las alimentan y las medidas de control han fallado, sin embargo, ellas también dan entretenimiento e ingresos económicos a las personas. Objetivo: Identificar las razones porque las personas alimentan a las aves, el tipo de comida que les dan y su percepción del problema. Métodos: Trabajamos en ocho parques urbanos de Costa Rica. Entre julio y setiembre del 2017 encuestamos 161 personas que alimentaban a las palomas y 90 que estaban en los parques urbanos, pero no las alimentaban. Resultados: Las personas alimentaban a las palomas con sobros de su comida o preferiblemente con semillas, si estaban a la venta en las cercanías. La razón por la que la gente decía que alimentaba a las palomas fue independiente de la edad, la escolaridad y el propósito de la visita al parque (chi cuadrado de contingencia, todos: p>0,01). Una de las razones para alimentarlas fue tradición; otras razones fueron diversión y empatía; los hombres lo hacían más por empatía que las mujeres. La mayor parte de las personas que alimentaban a las palomas consideran que no son una plaga que necesite ser controlada. Los que no las alimentaban consideraban que son una plaga que debe ser controlada. Casi todos consideraron el uso de anticonceptivos como una medida de control aceptable. Conclusiones: Una estrategia sostenible para el manejo de palomas urbanas debe incluir ventas controladas de alimento para aves y el uso de anticonceptivos, en vez de prohibir que se les alimento y que se promueva su exterminio; esta es la primera vez que se encuentra la tradición como una razón para alimentar a las palomas.
RELAÇÕES ON-LINE ENTRE SOCIEDADE CIVIL E PODER PÚBLICO: ANÁLISE DE INTERAÇÕES NA PÁGINA DO FACEBOOK DA SECRETARIA NACIONAL DE JUVENTUDE
Authors: LOZZI MARIANA , OLIVEIRA FREDERICO , RODRIGUES COSTA LUCAS , BARCELOS JANINNE , Schiessl Ingrid , SHINTAKU MILTON
Published: October 2019

O artigo parte da premissa que as políticas públicas de caráter afirmativo só se mostram efetivas na sua missão de erradicar desigualdades quando implicam no debate diversos grupos e setores da sociedade. Alinhada ao democrático da gestão pública, a Secretaria Nacional de Juventude (SNJ) tem investido nas redes sociais como um espaço adequado ao compartilhamento de informações de interesse público. O objetivo deste estudo é verificar as interações dos usuários nas postagens feitas na fanpage do Facebook da SNJ a partir da política pública Identidade Jovem (ID Jovem), identificada como o principal programa mantido pela Secretaria durante o período analisado. Empiricamente, utiliza-se de técnicas de avaliação dos dispositivos de interação disponibilizados pela rede social, tais quais: reações, comentários e compartilhamentos. A pesquisa se caracteriza como básica, exploratória e descritiva, com abordagem quanti-qualitativa. O universo descritivo que orientou a coleta de dados compreende postagens e comentários entre 01º de julho de 2017 e 30 de junho de 2018. Os resultados da análise dos indicadores apontam para a necessidade de investir em postagens que tenham como objetivo a divulgação dos serviços ofertados no âmbito do programa ID jovem, visto que, durante o período analisado, a tipologia serviço gerou mais engajamento do que as postagens de cunho institucional. Enquanto canal democrático de comunicação entre poder público e sociedade civil, a fanpage da SNJ no Facebook se beneficiaria de focar em um modelo de comunicação que diz mais respeito aos interesses do público do que à própria voz institucional.
Unusual Details of Everyday Life from the Notary Registry of Petrus, Called Perençanus, a Notary from Zadar (1365–1392)
Authors: Bartulović Anita
Published: October 2019

Most of the contracts from the unpublished notary registry of the notary Petrus from Zadar, known as Perençanus (1365–1392) provide only the most basic information about the contractors, the type of legal business and its subject matter, witnesses, officials, etc. because of their usual formulaic nature. In this paper, we shall deal with contracts that break this uniformity common to medieval notary records by presenting unusual and interesting details of people’s lives, largely found in the formulae contrahentes, res and causa. The content of these contracts is analyzed at two levels: within the context of studying the medieval mentality and within the linguistic context
Urban Elite and the Dubrovnik Area from the Late 13th Century to the Black Death
Authors: Benyovsky Latin Irena , Pešorda Vardić Zrinka , Ravančić Gordan , Haničar Buljan Ivana
Published: October 2019

This paper focuses on the spatial distribution of Dubrovnik’s urban elite, observed on the examples of the families of Matijaš de Mençe and Anđelo Ljutica, in the period from the late 13th to the mid-14th century and the time of Black Death. Using the methods of social topography and prosopography, the authors have studied the interrelation of the social and ownership statuses of these families, addressing the question of their social and spatial interconnections. In the early 14th century, both families belonged to the elite urban circles, but with a key difference: one of them was noble, and the other a family of commoners
Hydrothermal hydrolysis of sweet chestnut (Castanea sativa) tannins
Authors: Gagic Tanja , Knez Zeljko , Skerget Mojca
Published: October 2019

Sweet chestnut tannins were treated with subcritical water at temperatures from 120 to 300 ?C for reaction times of 15, 30 and 60 min. A great influence of temperature and reaction time on the product yield was noticed. Spectrophotometric methods were used to determine the total tannins, phenols and carbohydrates contents and antioxidant activity. Furthermore, vescalin, castalin, vescalagin, castalagin, 1-O-galloyl castalagin, gallic, ellagic and ferulic acids were analysed by HPLC. The results obtained from hydrothermal hydrolysis were compared to results from acid hydrolysis. Finally, the reaction parameters of the hydrothermal hydrolysis process were optimized aimed at obtaining a product with a high concentration of ellagic acid. The optimal conditions for obtaining the highest concentration of ellagic acid of 29.55 % were 250 ?C and 5 min. The concentration of ellagic acid in tannin extract obtained by acid hydrolysis was 8.19 %.
Determination and validation of Tetracycline residues in Poultry by High Performance Liquid Chromatography - Diode Array Detector Technique
Authors: Alrhia Lobaina M , Mohamad Issam , Mearouf Sameer
Published: October 2019

The aim of this research is separation and determination of trace Tetracycline residues in Poultry chest, thigh and liver using High Performance Liquid Chromatography - Diode Array Detector (HPLC-DAD), with a mobile phase mixture consisting of acetonitrile: methanol: oxalic acid (0.01M) (25:15:60) and chromatographic column C8. The study was done on 32 live poultry individuals. All individuals were injected in the chest by 1m of Tetracycline standard solutions, then slaughter for analysis throughout four successive days. The injection with 10×103 ppb of Tetracycline showed that the traces of Tetracycline residues (according to the Codex Alimentarius Commission) exceeded the value of the maximum residue limit (MRL = 200 ppb) in the thigh and chest meat at the 1st day and the 1st & 2nd days of slay respectively, and exceeded the value of (MRL = 600 ppb) in the liver at the 3rd and 4th days of slay. limit of detection was LOD = 0.451 ppb, limit of quantification LOQ = 1.502 ppb, and recovery percentages of Tetracycline at a concentration of 200.0 ppb for 20 sample Rec.% = (88.966 - 91.055%), (84.623 - 87.667%), (82.198 - 83.688%) for Poultry chest, thigh and liver respectively with a percentage relative standard deviations (RSD%) of < 1 %.
Hyperfactored of Reflection Arrangement A�(G_25 )
Authors: Haraj Raneen sabah , AL-Aleyawee Rabeaa
Published: October 2019

The purpose of this paper is to study the hyperfactored of the complex reflection arrangementA(G 25 ). Depending on the lattice of arrangement A(G 25 ), the basis of A(G 25 ) has been foundand then partitioned. Also, showed that A(G 25 ) is not hyperfactored and is not inductivelyfactored.
New Spectrophotometric Method for Estimation of Ceftazidime in pure and pharmaceutical dosage
Authors: Mohammed Nibras Sabah , M. Hassan Mohammed Jasim , Mahdi Amer Saleh
Published: October 2019

A new simple, rapid, inexpensive and nontoxic spectrophotometric method for thedetermination of Ceftazidime in the pure and local market formulation was proposed. Themethod is based on the coupling reaction between the diazotized drug and 4-tert-butylphenol(4-TBP) to produce a colored compound with a (λ max 500 nm). The optimal conditions for thefactors affecting the formation of this compound were studied. Beer's law was obeyed and alinear calibration curve was obtained over the range of (1–10 μg/mL) with a correlationcoefficient (r=0.9890), molar absorptivity (ε=6.62710 3 L/mol.cm), the limit of detection0.314 μg/mL, and the limit of quantification LOQ 1.047 μg/mL. the accuracy and precision ofthe method were checked and the method was applied successfully for the determination ofCeftazidime in commercial preparation and the values of recovery percent and RSD% rangedbetween (93.11 - 102.20%) and (0.48 - 9.54%) respectively.
Some properties of magSome Properties of Magic Squares of Distinct Squares and Cubesic squares
Authors: Ibrahim Amal Abdulrahman , Salman Shatha A.
Published: October 2019

Magic squares is n×n matrix with positive integer entries as well as the sum of rows, columnsand mains diagonal have the same magic constant, one of the most oldest magic square wasdiscovered in china. In this paper the history of magic square is displayed and some definitionof its kind is given the prove of two theorems about properties of magic square is introduced.
IbM TUNA NETRA SUDARNO DAN SUPARDIONO DI KARANGANYAR
Authors: Herawati Isnaini , Wahyuni Wahyuni
Published: October 2019

Today, a massage parlors have developed, including massage parlors by blind people. In Karanganyar, there are 9 massage parlors done by blind people under PERTUNI (Society for the Blind Indonesia), and the number was not included in the outposts or sub-districts in Karanganyar. There are two business units that will be a partner, namely Mr. Sudarno and Mr. Supardiono. This community service aims to increase the number of customers and to improve the quality of the Blind Massage services Sudarno and Supardiono. Activities that have been implemented are: the observation of the partners’ needs, fulfilling the needs of  partners, training on massage and aromatherapy, and improve promotional partner with signboards at strategic places. Partner 1 already has 3 pieces adequate massage booths, even one cubicle equipped with air conditioning. The first partners are still in need of help for marketing. Partner 2 requires repair his massage booths so as to provide convenience for customers.
PELATIHAN PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS WEB BAGI GURU SMP DAN SMA MUHAMMADIYAH KARTASURA
Authors: Supriyono Heru , Sujalwo Sujalwo , Sapoetra Adjie , Rahayu Endah Tri
Published: October 2019

A web-based learning media is a learning media developed and run using website technology so that able to display learning material in the form of text, figure or graph and video which is more attractive compared to printed learning material such as moduls or text books. The observation results showed that learning processes conducting in SMP Muhammadiyah 1 Kartasura and SMA Muhammadiyah 4Kartasura mainly are still using printed material. The objective of the community service is to introduce web –based learning media of volley ball and to improve skillof the teachers by conducting fundamental web development training. Firstly, a webbased volley ball learning media had been developed by using HTML5. The application has some useful features such as theoretical preview of volley ball and its technique including visualisation using graph, picture and video. Secondly, in the web development training session, a content management system (CMS) Wordpress was used as a paltform so that participants did not need to develop web from scratch. The post-tes quesionnaire results showed that all participants have knowledge and skill to use a web-based volley ball learning media and also they have acquired basic skill in web development.
PEMANFAATAN BAHAN ALAMI UNTUK PENGEMBANGAN PRODUK ECOPRINT DI DUKUH IV CERME, PANJATAN, KABUPATEN KULONPROGO
Authors: Saptutyningsih Endah , Wardani Dyah Titis Kusuma
Published: October 2019

The Community Partnership Program aimed to provide direct benefits to people's lives in the social and economic fields and to improve the quality of resources through the empowerment of the women of the PKK and Karang Taruna groups in Dukuh IV Cerme, Panjatan, Kulon Progo Regency by utilizing natural ingredients in around his residence. This activity was expected to solve the problems in the partner villages, namely the source of income for the community is only dominated by the agricultural sector, the natural potential of the village that has not been used properly, lack of skills in managing the potential of the village, the majority of the residents of Dukuh VI Cerme are housewives who have minimal income. The Community Partnership Program consists of two activities, namely the training in making ecoprints by utilizing natural materials in the neighborhood around Dukuh VI Cerme, Panjatan and making audio-visual videos on how to make ecoprints. The Partnership Program activity is expected to be carried out continuously so that it can be an additional livelihood for the local community because the selling value of the ecoprint product is still quite high on the market. Keywords: Ecoprint; Income; Natural Ingredient; Kulonprogo
Penetapan Kadar Pb Dalam Kangkung (Ipomoea reptans Poir) yang Direbus Dengan Cara Dimasukkan Dalam Air Biasa dan Air Panas Sebelum Perebusan
Authors: Kohar Indrajati , Hardjo Poppy Hartatie , Petrus Simon
Published: October 2019

Kangkung termasuk sayuran yang banyak digemari, yang mudah tumbuh ditempat berair ataupun di dekat sungai, dank arena itu banyak ditanam di dekat sungai dan disirami dengan air sungai tersebut. Jika sungai tercemar dengan logam berat, maka kemungkinan besar tanaman yang tumbuh disitu juga tercemar.

Suatu penelitian terhadap kangkung yang ditanam di media yang tercemar oleh Pb membuktikan bahwa kangkung tersebut juga mengandung Pb. Untuk mengetahui sejauh mana perebusan dapat mengurangi kandungan Pb dalam kangkung dilakukan penelitian dengan berbagai cara perebusan. Pada penelitian ini digunakan kangkung darat (Ipomoea reptans) sebagai sampel, dan ditanam secara hidroponik, serta disiram dengan larutan Multigrow Complete Plant Food (2000 mg/L) dan larutan Pb (2 mg/Ldua kali sehari. Kangkung di panen pada usia 6 minggu, kemudian daun dan batangnya direbus dengan dua cara. Perlakuan I: kangkung dimasukkan ke dalam air yang sudah mendidih, kemudian direbus, perlakuan II: kangkung dimasukkan ke dalam air biasa, kemudian direbus. Sebagai control digunakan kangkung yang tidak direbus. Untuk mengukur kandungan Pb digunakan alat Inductively Coupled Plasma Spectrometer (ICPS) Fison 3410+.       

Ternyata ada perbedaan yang bermakna pada kadar Pb dalam sampel yang dimasukkan ke dalam air dingin ssebelum perebusan (0,272 mg/100 g) dan dimasukkan ke dalam air mendidih sebelum perebusan (0,294 mg/100 g).
The effect of cassava (Manihot esculenta) leaf extract on COX-2 expression in the neutrophil cell culture exposed to the lipopolysaccharide of Escherichia coli (in-vitro study)
Authors: Meilawaty Zahara , Dharmayanti Agustin Wulan Suci , Prafitasari Dinar
Published: October 2019

Introduction: Neutrophils are cells which played an initial role in the inflammation area and can be induced by lipopolysaccharide (LPS). Activated neutrophils will secrete the COX-2 enzyme which is involved in arachidonic acid synthesis to produce inflammatory mediators. However, excessive inflammation can cause tissue destruction; thus, the body needs anti-inflammation agents. Cassava leaf contains biochemical component which has an anti-inflammation effect. This study was aimed to determine the expression of COX-2 in neutrophils administered with cassava leaf extract and the LPS of E. coli. Methods: This study was experimental laboratories (in vitro study) using human neutrophil cells culture. The samples of this study were divided into 4 groups, administered with 12.5% cassava leaf extract (T1); 25% cassava leaf extract (T2); control group which contained only neutrophils cells (C1); and control group contained neutrophils and LPS (C2). Human neutrophil cells culture was incubated in the 12.5% and 25% cassava leaf extract before exposed with the LPS of E. coli. COX-2 expression was observed with immunochemistry methods. Results: The COX-2 expression in the 12.5% cassava leaf extract group was significantly higher than the 25% cassava leaf extract group (p < 0.05). Conclusion: Cassava leaf extract can inhibit the COX-2 expression and can be used as an alternative anti-inflammation agent.Keywords: Anti-inflammation, cassava leaf extract, COX-2 expression, neutrophils.
Personas desaparecidas: conveniencia de fomentar la investigación científica en España
Authors: García-Barceló Néstor , Tourís López Rosa María , González Álvarez José Luis
Published: October 2019

El elevado número de denuncias por desaparición de personas que cada año se da a nivel mundial justifica la preocupación por el estudio de esta temática. El fenómeno de las desapariciones es complejo y multifacético, requiriendo de una respuesta adecuada por parte de las instituciones implicadas. Uno de los principales retos a nivel policial en materia de investigación de desapariciones, reside en el establecimiento de herramientas de valoración del riesgo de que la persona desaparecida resulte dañada o fallecida, y, que sean eficaces, fiables y de fácil manejo para los investigadores de las Fuerzas y Cuerpos de Seguridad. Se considera idóneo iniciar investigaciones científicas y actuaciones que aglutinen a especialistas y profesionales de procedencia multidisciplinar para la realización de estudios pormenorizados, que permitan la descripción del fenómeno y la identificación e factores de riesgo que favorezcan el desarrollo de herramientas y la mejora de los sistemas de evaluación existentes
Factores que influyen en la integración del Programa de Inclusión y Alfabetización Digital en la docencia en escuelas primarias
Authors: Beltrán-Sánchez Jesús Alfonso , García López Ramona Imelda , Ramírez-Montoya María Soledad , Tánori Quintana Jesús
Published: October 2019

La presente investigación pretende identificar los factores relacionados en la integración del Programa de Inclusión y Alfabetización Digital en las actividades del docente de educación primaria pública en México; para ello, se utilizó una metodología cuantitativa de alcance explicativo con una muestra de 203 docentes de un municipio del sur del estado de Sonora. Fueron medidos cuatro factores resultantes de la revisión teórica (escolares, personales, programáticos y contextuales), los resultados demuestran que las variables asociadas al factor personal del profesor son aquellas que logran explicar e impactar en mayor medida la integración del programa. Se concluye la presencia de una necesidad manifiesta en cuanto a la reformulación y desarrollo de programas de capacitación y concientización sobre el impacto de la tecnología y los beneficios que conlleva para el aprendizaje.
PERTUMBUHAN BIBIT AREN (Arenga pinnata Merr) PADA MEDIA TANAH ULTISOL DIPERSEMAIAN
Authors: Janting . , Muin Abdurrani , Burhanuddin .
Published: October 2019

Arenga pinnata Merr is a multipurpose trees species  that has long been known to produce industrial materials. Based on the utilization of Arenga pinnata Merr is not only limited to the food alone but also used as a raw material for industrial and land conservation. Arenga pinnata Merr has prospect good to be developed in the tree crop plantations. Arenga pinnata Merr cultivation activities require good quality seeds. Currently Arenga pinnata Merr still growing naturally in the forest. Exploitation by the farmers during this time in the form of Arenga pinnata Merr exploitation of the forest without cultivation. There are concerns Arenga pinnata Merr that grows in nature will be destroyed. The purpose of this research to study the effect of a doses of organic fertilizer and dolomite lime on the growth of Arenga pinnata Merr in the nursery. The study used an experimental method with a completely randomized design factorial models. The study consisted of two factors: factors of organic fertilizer and lime dolomite with five repetitions with a number of plant samples as many as 100 plants. The measured parameters include length midrib, stem diameter and stem height were analyzed using SAS IX. The research proves that organic fertilizer dose of 300 g and 35 g dolomite lime can increase the growth of palm in the nursery.   Keywords: Arenga pinnata Merr, fertilizer, lime, organic.
Collegiate Esports as Learning Ecologies: Investigating Collaboration, Reflection and Cognition During Competitions
Authors: Richard Gabriela T , McKinley Zachary A , Ashley Robert William
Published: October 2019

In this paper, we explore the ways in which a collegiate esports team’s play and performance underscore micro-level shifts in learning, domain mastery, and expertise through simultaneously collaborative and competitive gameplay. Specifically, with this aim, we evaluate how esports’ high-stakes team play and organizational activities provide evidence of processes and practices that are important for learning-relevant trajectories in and beyond higher education. Throughout the course of a threegame match in a major collegiate esports tournament, players demonstrated decision-making, reflection and dimensions of individual and collaborative learning. We also found support for improved meta-gaming knowledge – or distributed, communitycentered knowledge around the game – which underscored players’ domain learning and growth. Our findings highlightevidence of perceptual learning, as demonstrated through the players’ flexibility in adapting to increasingly complex challenges. We propose that these findings emphasize the importance of esports as meaningful and noteworthy learning ecologies which need to be more deeply examined in light of historic gender and racial barriers to educational and professional aspirations in gaming.
A pure meritocracy blind to identity: Exploring the Online Responses to All-Female Esports Teams in Reddit
Authors: Siutila Miia , Havaste Ellinoora
Published: October 2019

Despite recent growth and popularity, esports as a scene is struggling with a number of problems ranging from payment problems and cheating to questionable treatment based on various factors such as race and gender. In this paper we seek to uncover how perceptions of women in esports are guided by stereotypes of all-female teams and ‘female professional players’. Our data consists of 952 Reddit comments on two announcements of all-female teams in League of Legends and Counter-Strike: Global Offensive. The nature of esports was perceived as a working meritocracy where only player skill matters. Especially all-female teams were seen to be a threat to this order, since they were considered to lack dedication and have ulterior motives for playing the game. Ultimately, getting to visibly exist as a woman in the scene was a reward for compliance in the esports meritocracy: exhibiting skill, playing in mixed teams, and tolerating harassment.
Dificuldades e avanços na utilização de roteiros investigativos: a prática investigativa na prática
Authors: Olenka Laudileni
Published: October 2019

A prática de laboratório vem se estabelecendo nas atividades docentes, entretanto faz se necessário que seja trabalhada de forma mais investigativa, apresentando “situações problemas” com liberdade de investigação, favorecendo a reflexão dos alunos para a correta interpretação dos resultados. Para os graduandos de licenciatura em física, trabalhar com essa metodologia pode ser um desafio a ser superado na sua formação docente, pois também no ensino superior não estão familiarizado com metodologias num contexto mais investigativo. Neste trabalho, visando à formação de graduandos de licenciatura em física, discutimos possíveis recursos para trabalhar com roteiros investigativos nos experimentos de física e apontamos algumas dificuldades na utilização dessa metodologia.
Interpretação cartográfica associada a investigação matemática: possibilidade de fomentar a escrita e o ensino de conceitos matemáticos
Authors: Mariani Mateus , Quartieri Marli Teresinha
Published: October 2019

O presente trabalho tem como objetivo apresentar a resolução de duas questões vinculadas a uma dissertação de Mestrado Profissional, onde foram desenvolvidas catorze atividades voltadas ao estudo de Cartografia usando a Investigação Matemática. Tais atividades foram realizadas com alunos do 9º ano do Ensino Fundamental. A coleta dos dados ocorreu por meio de observações, diários de campo, relatório dos trabalhos e filmagem da fase de discussão. Os resultados apontam a Investigação Matemática como uma metodologia de ensino que pode despertar no estudante o interesse pela busca de respostas. A partir das estratégias elaboradas, foi perceptível o progresso dos alunos na construção de seu conhecimento matemático. Além disso, percebeu-se melhoria na capacidade de escrita dos discentes.
Conceptions of indigenous students in early training about Chemistry and its education
Authors: Leão Marcelo Franco , Izarias Nilma Silvania , Oliveira Eniz Conceição , Del Pino José Claudio
Published: October 2019

This text describes the conceptions that some indigenous students in early training from Mato Grosso hold about chemistry and chemistry education. The research investigated eleven students from ten different ethnicities from a specific course for indigenous people, named Graduation in Mathematical and Natural Sciences at UNEMAT, Barra do Bugre-MT campus. This survey, descriptive and exploratory, is of a qualitative approach and took place in the first semester of 2014 during the Chemistry Education course. The choice of images to illustrate the chemistry before the training activities and a questionnaire consisting of three open questions and completed at the end of the course were the instruments used to collect data. The interpretation of these reports occurred through the technique titled Content Analysis. The images chosen and their justifications revealed the limited conception that the students held before the subject. From the data gathered four categories emerged: previous conceptions about chemistry and its performance; aspects of the student‟s trajectory; definition of ideal classes and contributions of chemistry to life. The study revealed the conceptions these indigenous students and future teachers hold about chemistry and teaching this discipline.
¿Cómo son percibidos los docentes por el personal estudiantil en la carrera de Enfermería de la Universidad Técnica del Norte?
Authors: Rosales Rivadeneira Sara Maria , Valle Dávila María Fernanda , Espinel Jara Viviana Margarita , López Aguilar Eva Consuelo , Acosta Balseca Silvia Lorena , Morejón Jácome Gladys Edelmira
Published: October 2019

Introducción: en los procesos educativos se realizan análisis de debilidades y fortalezas e indagan las necesidades de desarrollar capacitaciones que favorezcan la educación universitaria. Objetivo: establecer las competencias docentes según la percepción de los estudiantes de la carrera de enfermería. Método: estudio no experimental, descriptivo, analítico y transversal, se aplicó una encuesta a los estudiantes del cuarto al sexto semestre de la Carrera de Enfermería, de la Universidad Técnica del Norte, los datos se presentan por gráficos y porcentajes. Resultados: la edad de los docentes fue 41 a 55 años, los estudiantes consideran una característica muy requerida el título de cuarto nivel, el 85% de  los estudiantes consideran relevante la puntualidad del docente, el 56%  establecieron que los docentes actualizan los conocimientos y manejan adecuadamente las tecnologías de información y comunicación (TICS), el 90% de los estudiantes indicaron como una característica muy requerida la socialización del silabo, el 56% consideran que existe planificación de cada clase teórica y el 57% de los estudiantes afirmaron la necesidad de la vinculación de la investigación con la asignatura. Conclusiones: Las características docentes en el área técnica pedagógica se reflejan altamente evaluada según opiniones manifestadas por los estudiantes de la carrera.
Colorante luminiscente superpurificado a base de fosfato de gadolinio dopado con europio en ácido carmínico para tinción histológica
Authors: Eslava Monroy C.Y. , Sánchez Gutiérrez G.G. , Promontor Gómez V.T. , Garrido Hernández A. , Chávez Güitrón L. E. , Flores-Alatorre Hernández L.
Published: October 2019

En los estudios histológicos es indispensable que las muestras exhiban una coloración para identificar sus componentes, por ello, es necesario el uso de tintes. En la actualidad, se emplean colorantes que generan residuos, son tóxicos y no son correctamente tratados para su deshecho. La respuesta a esta problemática, es la elaboración de nuevas sustancias, con una igual o mayor capacidad de tinción y afinidad a ciertos componentes de la célula. En este trabajo se presenta el desarrollo de un colorante elaborado a base de la dispersión mediante cavitación acústica, de fosfato de gadolinio dopado con europio (GdPO4:Eu3+), un nanocompuesto cerámico biocompatible y con propiedades fluorescentes que, al estar inmerso en ácido carmínico, un extracto de grana cochinilla (Dactylopius coccus costa) con alta capacidad tintorea y fijación de color, forman un tinte histológico capaz de generar mayor contraste en la muestra para el óptimo estudio de las subestructuras celulares. En los análisis de caracterización realizados (DRX, FT-IR y MEB) se muestran datos característicos del material sintetizado, corroborando sus propiedades estructurales y morfológicas, se reportan evidencias de microscopías ópticas realizadas en muestras de tejido bajo diferentes condiciones de teñido, que permiten comparar su acción tintórea, con el puro extracto y el tejido sin colorante; mostrando la afinidad que tiene y la eficacia para mantener el color por largos periodos de tiempo, demostrando que es posible la utilización de materiales biodegradables para la sustitución de sustancias tóxicas utilizadas en la actualidad en el área de la medicina y salud.
Modificación de las propiedades multiferroicas de BiFeO3 dopada con Y3+
Authors: Rosales González Omar , Bolarín-Miró Ana M , Cortés-Escobedo C.A. , Sánchez-De Jesús Félix
Published: October 2019

En el presente trabajo se realizó el dopaje con Y3+ para obtener Bi1-xYxFeO3 en un rango de 0≤x≤0.4 mol, con el objetivo de promover cambios en su estructura cristalina y evaluar sus efectos sobre sus propiedades magnéticas y dieléctricas. La síntesis de Bi1-xYxFeO3 se llevó a cabo mediante molienda de alta energía durante 5 h. Los polvos obtenidos fueron compactados uniaxialmente aplicando una presión de 900 MPa, posteriormente fueron tratados térmicamente hasta 700 °C durante 2 h. Para corroborar la formación de la fase BiFeO3 como matriz se realizó una caracterización mediante difracción de rayos X (DRX) r para todo el rango de muestras estudiadas. Determinándose la formación de Bi2Fe4O9 y Bi25FeO40 como fases secundarias para muestras con x≤0.3. Los ciclos de histéresis muestran un comportamiento antiferromagnético para la BiFeO3 pura. Para las muestras dopadas se observa un comportamiento ferromagnético atribuido a la formación de Y3Fe5O12. Las mediciones dieléctricas muestran una reducción en los valores de pérdidas dieléctricas con respecto a la muestra sin dopar.
A TV Escola e o Proinfo: trajetórias de políticas públicas de incentivo e gestão das TIC no Brasil
Authors: Machado Márcia Alves de Carvalho , Nobre Luciano Matos , Bezerra Ada Augusta Celestino
Published: October 2019

Resumo: Este artigo analisa a trajetória de duas importantes políticas públicas brasileiras voltadas para a adoção das TIC na educação: a TV Escola e o Programa Nacional de Tecnologia Educacional (Proinfo), que emergiram no contexto da década de 1990 sob novos paradigmas de gestão e ainda se encontram em execução nos dias atuais. Trata-se de estudo de revisão crítica, delineado como pesquisa qualitativa, na qual foram utilizados os procedimentos de levantamento bibliográfico e documental. Constatou-se que, ambas as políticas, geraram importantes ações estratégicas do Governo Federal voltadas para a adoção e o uso das TIC e que a ressignificação dada ao longo de suas trajetórias potencializa sua importância na educação, ao mesmo tempo em que reflete as mudanças ocorridas progressivamente na visão de mundo dos gestores que interferiram de modo significativo no processo educacional e em seus resultadosPalavras-chave:  Incentivo. Proinfo. Ressignificação. TIC. TV Escola.
Limites e contradições da profissionalização do docente para atuar na Educação a Distância
Authors: Rocha Paula Eliane Costa , Veado Patrícia Moraes , Versuti Andrea Cristina
Published: October 2019

Resumo: Este trabalho tem o objetivo discutir a modalidade educação a distância (ead) a partir de duas categorias de análise: as contradições e os limites da profissionalização docente, bem como compreender como as políticas educacionais tratam esta modalidade de ensino, e as medidas desempenhadas pela legislação para que a ead se efetive. Trata-se de um estudo qualitativo, pautado por pesquisa bibliográfica e documental. Com esta pesquisa foi possível constatar que o exercício da modalidade ead exige do professor atuante o atendimento uma série de novas competências e habilidades. Dentre as habilidades imprescindíveis identificadas estão aquelas relacionadas à: estética dos materiais didáticos, formulação e cumprimento de objetivos pedagógicos - aliados às condições da distância física, adequações do conteúdo aos formatos das novas mídias e aspectos relacionados às novas rotinas de trabalho e comunicação com os alunos. Este conjunto de habilidades e competências, provenientes do exercício da modalidade, tem trazido muitos desafios para a sua efetiva implantação com qualidade, principalmente no que se refere à profissionalização docente e sua formação continuada. Palavras-chave: Educação a distância. Profissionalização docente. Limites e contradições
Ferramentas de educação a distância utilizadas por profissionais de contabilidade visando a educação continuada
Authors: Witt Haddad Carraro Wendy Beatriz , Souza Michelle , Behr Ariel
Published: October 2019

Pesquisas na área de educação profissional realizadas nos últimos tempos têm mostrado que a área de Contabilidade vem passando por importantes mudanças, as quais exigem que os profissionais contábeis estejam mais estimulados a buscar aprimoramento e atualizações através do uso de novas ferramentas tecnológicas da Educação a Distância (EAD). Diante deste contexto este estudo tem por objetivo identificar as ferramentas da EAD que são utilizadas para ampliação de conhecimento dos profissionais que atuam em área contábil. Trata-se de um estudo de natureza aplicada, com abordagem qualitativa e objetivo exploratório. Em relação aos procedimentos metodológicos, tendo-se como base as entidades de classe contábil e outros órgãos, a pesquisa está dividida em duas fases: a primeira foi a identificação das ferramentas tecnológicas disponíveis nos sites de entidades da classe contábil e outros órgãos; e a segunda, a aplicação de um questionário online junto a profissionais que atuam na área.  Os resultados revelam que, apesar das entidades relacionadas à classe contábil oferecerem diversos recursos de apoio tecnológico para atualizar os profissionais, há baixa utilização dessas ferramentas. Conclui-se que os profissionais contábeis estão pouco utilizando as possibilidades de educação continuada que são ofertadas pelas organizações, entidades de classe contábil e outros órgãos.
O trabalho colaborativo apoiado pelas tecnologias: o exemplo da investigação qualitativa
Authors: Costa Elisabete Pinto da , Costa António Pedro
Published: October 2019

Se por um lado, a investigação coloca dificuldades e oportunidades que justificam a adoção de uma estratégia de trabalho colaborativo, por outro lado, existem novas tecnologias que oferecem ao investigador meios de explorarem processos de partilha e de colaboração, em tempo real, num mesmo projeto, independentemente da sua localização geográfica. Com este artigo pretende-se encetar uma reflexão acerca das potencialidades e os desafios que a abordagem colaborativa na investigação coloca ao investigador e sobre as possibilidades que as tecnologias têm vindo a oferecer para a operacionalização do processo colaborativo de investigação. Para cumprir este objetivo tomamos por referência os estudos de um grupo de investigadores portugueses, que se têm dedicado a desenvolver um software de dados qualitativos (o webQDA) disponível em ambiente colaborativo e distribuído. Apesar de promoverem o desenvolvimento de ferramentas promotoras do trabalho em grupo online, estes investigadores constatam uma reduzida relevância e prática da investigação colaborativa.
Bibliografia comentada
Authors: Leopoldo Mercado Luis Paulo
Published: October 2019

Acesse o pdf para ver o conteúdo.
A Influência da Temperatura na Fermentação da Cerveja Artesanal
Authors: Tavares Paulo Henrique Campos Prado , Miranda Carlos Alberto Silva de , Nicolau Bernardo , Gontijo Brenda , Shafee Marco Pordeus , Dourado Vitor Campos do Vale
Published: October 2019

A cerveja é uma bebida fermentada feita, geralmente, a partir de cereais maltados e possui como principais ingredientes água, malte, lúpulo e levedura, sendo essa última o foco da presente pesquisa. D
Pengembangan Model Sistem Pendukung Keputusan Dengan Kombinasi Metode Fuzzy Tahani Dan Topsis Dalam Penilaian Kinerja Instruktur
Authors: Safrizal Safrizal , Susianto Susianto
Published: October 2019

The instructor is the main academic implementer in the Institute for Aviation Education and Training (LPP). One of the factors that influence the success of LPP Aviation in improving student quality is the commitment and performance of instructors. One method used is to conduct an instructor performance appraisal process. The large number of Instructors in LPP Aviation is a separate issue in the assessment process, considering the process is based on subjectivity and has a great chance of making mistakes in the decision making, namely the selection of instructors who do not meet the desired standards and are not in accordance with the determination of instructor performance evaluation priorities. For this reason, a decision support system is needed in conducting the instructor's performance appraisal process. The Multi Attribute Decision Making (MADM) model has been widely used by decision makers to solve decision making problems with a variety of methods that can be used to find the best solution, but from these methods can still be developed with the aim of providing maximum decision results. In this research a decision support system model will be built with a combination of two methods, namely the Fuzzy Resistant method and TOPSIS which aims to manipulate the success data of instructors who are ambiguous by conducting a search for appropriate and accurate data for the criteria used in the assessment process LPP Aviation instructor performance by using Fuzzy-Resistant to get priority criteria in the form of rules, then ranking will be done by using TOPSIS in getting the quality of teaching conducted by LPP Aviation Instructors as the best instructor selection. The results of the flight instructor's performance evaluation with a combination of the Fuzzy Resistant method and TOPSIS, are based on 250 data tested samples, therefore, the accuracy value is 93%.
Rekomendasi Laptop Gaming High end untuk Gamer Professional dengan Elimination Et Choix Traduisant la Realite (ELECTRE)
Authors: Arisawati Ester , Rinawati Rinawati , Handayanna Frisma , Sihombing Erene Gernaria , Dewi Linda Sari
Published: October 2019

The purpose of this research is as a recommendation tool in determining high end gaming laptops for professional gamers by using a decision support system. The settlement method used in this study is Elimination Et Choix Traduisant la Realite (ELECTRE). The data collection techniques were carried out randomly by conducting observations, interviews and questionnaires to 250 respondents (gamers) and 10 computer shops in the district of Simalungun. In this study, using five alternatives, among others: Asus ROG G703 (A1), Razer Blade Pro (A2) MSI GT75VR Titan-083 (A3), Acer Predator Triton 700 (A4), Alienware 17 (A5) and five assessment criteria, among others: Price (C1), Processor Type (C2), RAM Capacity (C3), VGA Card Type (C4) and Hard Drive (C5). The results of the Elimination Et Choix Traduisant la Realite (ELECTRE) method recommend the Predator Triton 700 (A4) alternative as the first recommendation for the selection of high end gaming laptops for professional gamers.
Implementasi Algoritma Apriori Terhadap Data Penjualan Oli Mobil Berbasis Sistem Pencarian Aturan Asosiasi
Authors: Rulianto Jorza , Mustika Wida Prima
Published: October 2019

Data mining techniques are used to design effective sales or marketing strategies by utilizing sales transaction data that is already available in the company. The problem in the company is that there are many data transactions that occur unknown, causing an accumulation of data unknown sales most in each month & year, unknown brands of car oil are often sold or demanded by customers. So this association search uses a priori algorithm as a place to store data using pattern recognition techniques such as static and mathematical techniques from a set of relationships (associations) between items obtained, it is expected that can help developers in designing marketing strategies for goods in the company. Software testing results that have been made have found the most sold oil brand products if you buy Shell Hx7, it will buy Toyota Motor Oil with 50% support and 66.7% confidence. If you buy Toyota Motor Oil, you will buy Shell Hx 7 with 50% support and 85.7% confidence.
Analisis Laju Pembelajaran dalam Mengklasifikasi Data Wine Menggunakan Algoritma Backpropagation
Authors: Hardinata Jaya Tata , Okprana Harly , Windarto Agus Perdana , Saputra Widodo
Published: October 2019

Backpropagation is an artificial neural network that has the architecture in conducting training and determining the right parameters to produce the correct output of similar but not the same input. One of the parameters that influences the determination of bacpropagation architecture is the rate of learning, where if the value of the learning rate is too high then the network architecture becomes unstable otherwise if the value of the learning rate is too low the network architecture converges and takes a long time in training network architecture. This research data is secondary data sourced from UCI Data Mechine Learning. The best network architecture in this study is 13-10-3, with different learning rates ranging from 0.01, 0.03, 0.06, 0.01, 0.13, 0.16, 0.2, 0.23, 0.026, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.9. From the 21 different learning rate values in the 13-10-3 network architecture, it is found that the level of learning rate is very important to get the right and fast network architecture. This can be seen in experiments with a learning rate of 0.65 can produce a better level of accuracy compared to a learning rate smaller than 0.65.
Rancang Bangun Aplikasi Informasi Perkuliahan Berbasis Android
Authors: Salamah Irma , Lindawati Lindawati , Handayani Herlina Fitri
Published: October 2019

Nowaday, the development of smartphone technology is increasingly popular. Android as one of the operating systems of mobile devices, provides tools and API for Android developers to develop applications. At universities, smartphone use is popular among students. Through smartphones, the use of mobile and web applications is more effective and efficient with the ease of delivery and receipt of information. In this study, the author made a mobile application that contains academic informations that complements the class schedule, the final semester exam schedule, incidental schedules, academic calendar and the latest announcements with push notification as a reminder for students. With this application it is expected that students can access and obtain the latest information anywhere more easily.
O Bioma Pantanal como espaço de ensino e aprendizagem de Química no ensino fundamental
Authors: Morigi Eliane , Mello Irene Cristina de
Published: October 2019

Este artigo apresenta um estudo que investigou as possibilidades de ensino e aprendizagem de conceitos químicos para estudantes do ensino fundamental no contexto do Pantanal Mato-Grossense. Para tanto, buscamos caracterizar este Bioma como contexto de ensino e aprendizagem, e percorremos as falas das entrevistas da professora-sujeito da pesquisa, mediante a elaboração e desenvolvimento de uma proposta didático-pedagógica para o 9º ano do ensino fundamental, onde avaliou as etapas de ensino desenvolvidas e a aprendizagem de conceitos que o contexto do Pantanal Mato-Grossense proporcionou aos alunos. Como aporte teórico-metodológico, utilizamos uma pesquisa com abordagem qualitativa do tipo exploratória, com elementos de estudo de caso, apoiados fundamentalmente nas obras de Bogdan e Biklen (1994) e Yin (2015). Os resultados do estudo apontam que o Pantanal Mato-grossense possui características propícias para a abordagem dos conceitos de Química no ensino fundamental e apresenta evidência do potencial para trabalho interdisciplinar dos conteúdos de Química, Física e Biologia.Palavras-chave: Este artigo apresenta um estudo que investigou as possibilidades de ensino e aprendizagem de conceitos químicos para estudantes do ensino fundamental no contexto do Pantanal Mato-Grossense. Para tanto, buscamos caracterizar este Bioma como contexto de ensino e aprendizagem, e percorremos as falas das entrevistas da professora-sujeito da pesquisa, mediante a elaboração e desenvolvimento de uma proposta didático-pedagógica para o 9º ano do ensino fundamental, onde avaliou as etapas de ensino desenvolvidas e a aprendizagem de conceitos que o contexto do Pantanal Mato-Grossense proporcionou aos alunos. Como aporte teórico-metodológico, utilizamos uma pesquisa com abordagem qualitativa do tipo exploratória, com elementos de estudo de caso, apoiados fundamentalmente nas obras de Bogdan e Biklen (1994) e Yin (2015). Os resultados do estudo apontam que o Pantanal Mato-grossense possui características propícias para a abordagem dos conceitos de Química no ensino fundamental e apresenta evidência do potencial para trabalho interdisciplinar dos conteúdos de Química, Física e Biologia.