bluuebunny/crossref_metadata_2025 huggingface dataset:
A fábula da princesa herege que veio de longe
Authors: Benedetti Marina
Published: May 2018

The fairy tale of the heretic princess coming from far away. Again on Guglielma
Abstract: Divided into two parts (biography and hagiography) the article shows the multiple tendencies to create “the fairy tale of the heretic princess coming from far away”. The author takes into consideration different kinds of sources relating to a women called Guglielma, who died in Milan in 1281-1282 known by the proceedings of an inquisitorial trial hold in 1300. Although we know very little about her, in the most recent tendencies, information are just put together to create one Guglielma, a sort of patchwork of different Guglielmas, such as the famous case of “Guglielma of Bohemia, Milan and Brunate” or the pretended relation between Guglielma and Agnes of Prague, extremely fascinating, but not supported by historical documents.
Borgonha e Trastâmara: o conceito de legitimidade monárquica em atualização frente às tradicionais pretensões da nobreza extraterritorial ibérica (1369-1373)
Authors: Fernandes Fátima Regina
Published: May 2018

Analisaremos a sociedade política do reino português na época de D. Fernando I (1367-83), último rei da dinastia portuguesa de Borgonha. Seu reinado marcaria a entrada da Península Ibérica na Guerra dos Cem Anos (1337-1453). Um contexto de partidarizações instáveis em relação aos dois reinos em guerra, francês e inglês, cujos respectivos aliados formariam os blocos anglo-luso e franco-trastamarista. No campo espiritual os partidarismos gerariam dois fenômenos em sequência, primeiro o Exílio de Avignon (1305-1377) seguido do Cisma do Ocidente (1378-1422) que promovem a fratura da Cristandade latina entre os oponentes no conflito. Neste contexto os reis com legitimidade de sangue perdiam campo sobre seus concorrentes, os usurpadores ou sucessores ilegítimos. A sociedade política mais tradicional, por sua vez, faria eco às pretensões dos legitimistas enquanto tivessem interesses e projetos comuns. A práxis política e militar mostraria neste contexto a dialética própria dos períodos de transição e demandaria uma atualização dos conceitos de legitimidade, fidelidade e traição. As elaborações jurídico-legislativas da Escola de Bolonha se difundiriam na medida das necessidades do contexto e promoveriam uma sistematização de conceitos e práticas de governação pautadas no Direito Comum. A abordagem que propomos a partir da linha da Nova História Política concebe estes dados contextuais para além de sua dimensão factual analisando os ecos de uma transformação mais profunda de conceitos que sustentam em bases atualizadas a legitimidade de sucessão monárquica
Nas horas de Deus, amém! Ritual e simbologia das folias de reis no município de Januária-MG
Authors: Correia Iara Toscano
Published: May 2018

O artigo traça um panorama sobre as manifestações religiosas ligadas ao ritual das folias de reis presentes no município de Januária-MG. As folias de reis enquanto expressão da religiosidade popular são festividades que se expressam a partir de autos natalinos encenando o nascimento e a anunciação do menino Jesus. Em Januária a diversidade dos grupos (comunidades, famílias, bairros) envolvidos nessa tradição denota a força das folias de reis na região. O estudo partiu da observação de três grupos de folias distintos. Por meio de entrevistas, análise de textos bíblicos e teóricos, foi possível a caracterização do ritual e a construção de um quadro comparativo destas práticas no contexto da região Norte de Minas Gerais.
D. João II: rei justo e misericordioso
Authors: Do Nascimento Denise Da Silva Menezes
Published: May 2018

Garcia de Resende, buscou eternizar as ações e os valores de D. João II que deveriam servir de paradigma para uma parcela importante da sociedade portuguesa de quatrocentos. O cronista objetivava deixar para a posteridade os fatos e atitudes que deveriam servir de modelo para os monarcas vindouros. Se hoje desviamos nosso olhar da mera narração de grandes feitos, uma nova perspectiva se lança ao nos debruçarmos sobre as linhas dos cronistas medievais. Nesse sentido, a partir da análise da rede de intrigas narrada por Resende podemos nos voltar para as estratégias de poder que permitiram a D. João II consolidar a imagem de rei justo e misericordioso.
A diplomacia e a história do reino (Portugal, século XV)
Authors: Lima Douglas Mota Xavier de
Published: May 2018

Tendo em vista a importância da dinastia de Avis na construção e na reestruturação da história do reino de Portugal, o presente estudo propõe discutir como a diplomacia e, especialmente, as cerimônias da diplomacia, atuaram na promoção da história do reino durante o século XV. Para tal, concentra-se a reflexão no Diário de viagem do embaixador Nicolau Lanckman de Valckenstein, sobre o casamento de D. Leonor, na narrativa Viaje a España, sobre a viagem de Jorge de Ehingen aos reinos ibéricos, e na Oratio Oboedientiae ao papa, em 1485, de Vasco Fernandes de Lucena. Procura-se demonstrar que através da diplomacia se apresentava ao estrangeiro a história do reino de Portugal associada à providência divina e à luta contra o infiel, marcas da memória quatrocentista promovida pela dinastia de Avis.
A edição do Regiment de la cosa pública (1499): uma recuperação do passado da cidade de Valência
Authors: Vianna Luciano José
Published: May 2018

A composição de tratados relacionados ao governo foi um fenômeno constante durante o Medievo, principalmente a partir do século XII, em um contexto de ressurgimento das cidades medievais como centro de cultura e poder. Neste artigo analisamos o Regiment de la cosa pública, de Francesc Eiximenis (1330-1409), contido na edição 10 do Arxiu de la Corona d’Aragó (ACA), o qual apresenta um tratado sobre o modo de governar, elaborado originalmente em 1383 e recuperado posteriormente através da impressão em 1499 na cidade de Valência. Nossa proposta é compreender este objeto como pertencente a um determinado contexto histórico e como produto do comportamento político do seu momento de impressão. O que buscamos neste artigo é o que denominamos significado histórico, ou seja, o motivo pelo qual este objeto historiográfico foi composto em determinado contexto.
AS RELÍQUIAS CRISTÃS E A APROPRIAÇÃO SIMBÓLICA DO TERRITÓRIO
Authors: Nascimento Renata Cristina De Sousa
Published: May 2018

A questão das fronteiras e/ou delimitação de limites territoriais se constituíram, desde sempre, em campos de tensão. No contexto ibérico medieval as vivências e os processos de deslocamento espaço- temporais estiveram envolvidos nas dinâmicas expressas nos confrontos entre cristãos e muçulmanos, e também entre os próprios reinos cristãos. A historiografia tem se debruçado há tempos sobre estas temáticas, sofrendo um processo de constante reelaboração. Para a compreensão desta experiência múltipla, de definição e redefinição fronteiriça, entre reinos e cidades, deve-se levar também em consideração a busca pela sacralização do território. Para que este processo se efetivasse foi necessária à introdução de signos identitários que fortalecessem a memória das populações, inserindo-as no ambiente em que viviam. Neste texto temos a pretensão de discutir o papel exercido pelas relíquias cristãs enquanto fatores de referência, tendo função eficiente também na ocupação do espaço geográfico. Para tanto elencamos a importância do Santo Lenho de Marmelar, relíquia simbólica, que contribuiu para fomentar o prestígio da região do Alentejo, em um contexto complexo, de ocupação de fronteiras.
Desmame precoce em crianças atendidas na Estratégia Saúde da Família
Authors: Santos Priscila Veras , Martins Maria do Carmo de Carvalho e , Tapety Fabricio Ibiapina , Paiva Adriana de Azevedo , Fonseca Fernandina Maria Neiva Santos , Brito Ana Karolinne da Silva
Published: May 2018

O objetivo deste estudo foi avaliar a prevalência de desmame precoce e fatores associados em crianças atendidas na Estratégia Saúde da Família. Trata-se depesquisa quantitativa, descritiva e exploratória realizada com 241 crianças atendidas pela equipe de saúde. Para coleta dos dados foram usados um formulário e um questionário. Nas análises, para variáveis em que foram encontradas associações estatisticamente significativas foi realizado teste de regressão logística binária. A prevalência de desmame precoce foi de 58,51%. Maiores proporções de desmame precoce ocorreram em crianças com idade entre um e três meses. Pertencer a classe econômica B/C e ter recebido orientação sobre amamentação no pré-natal apresentaram-se significativamente associados com o desmame precoce. A prevalência do desmame precoce foi elevada, e considerada semelhante à prevalência nacional e descrita para o estado do Piauí. Houve associação entre o desmame precoce, classe econômica B/C e ter recebido orientação sobre amamentação no pré-natal.
Etnografía dentro y fuera de los estudios migratorios: una revisión pertinente
Authors: Alzate Laura Calle , Villamar María del Carmen Villarreal
Published: May 2018

Este artículo pretende dar cuenta de los usos, retos yoportunidades brindadas por la etnografía en los estudiosmigratorios y otros campos de investigación. Con este fin,ofreceremos, en primer lugar, un breve resumen sobre lahistoria del trabajo de campo etnográfico y una descripcióny análisis de la etnografía en cuanto método, texto y enfoque.A seguir, nos detendremos en el análisis de la etnografía enlos estudios migratorios, partiendo de las etnografías clásicashasta el desarrollo de las etnografías multisituadas. Finalmente, daremos cuenta de la diversidad de campos de aplicación de la etnografía y de sus raíces interdisciplinares y multitécnicas. A su vez, en consonancia con los cambios propiciados por la globalización y la difusión de las nuevas Tecnologías de la Información y Comunicación (TICs) abordaremos también las potencialidades y límites de la etnografía de la cibercultura o etnografía digital.
Valores políticos dos agentes pedagógicos dos projetos de educação para a democracia do Congresso Nacional
Authors: Barros Antonio Teixeira de , Cosson Rildo
Published: May 2018

O artigo analisa a percepção e o discurso dos agentespedagógicos que atuam nos programas de educação para ademocracia do Congresso Nacional. O estudo foi realizadopor meio de websurvey, com questões abertas e fechadas nomês de maio de 2017. As principais conclusões demonstramque os educadores são críticos em relação ao atual estágioda democracia e ao combate à corrupção. Há elevada adesãoa valores políticos como igualdade de direitos, tolerânciapolítica, respeito à diferença e à diversidade cultural e sexual,novas configurações familiares, participação política e social,entre outros. O estudo apresenta dados que são relevantes para a compreensão do modo de pensar de um segmento que atua diretamente nos projetos de educação para a democracia nas duas casas legislativas, considerando que os estudos sobre o tema têm privilegiado os efeitos de tais iniciativas, sem levar em conta a perspectiva dos educadores.
A Case Study on Pathao: Technology Based Solution to Dhaka’s Traffic Congestion Problem
Authors: Wali Ullah G M , Islam Ashraful
Published: May 2018

This case details the founding of Bangladeshi logistics and ride-sharing company Pathao, solving the traffic congestion and transportation issues of the eighth most populated city of the world, Dhaka. Founded by entrepreneurs Hussain M. Elius, Fahim Saleh and Adnan Shifat in 2015, Pathao broadly operates under two primary areas—delivery and logistics service; and, motorcycle taxi service. It has established broad operations spread throughout the country and was able to differentiate themselves from competitors using an innovative idea to tackle the traffic problem in the city and by leveraging technology to streamline its operations. The case gives an overview of logistics and transport scenario in Bangladesh through the lens of the start-up. It depicts the challenges related to starting a new company; identifying, creating and interacting with the market; securing intellectual property rights, and developing a business model in a developing country.
The Effects of Human Capital on the Total Quality Management: High Technology Sectors
Authors: Brahim Houneida Ben , Hadoussa Slim
Published: May 2018

The firms should place quality at the top of its strategic priority if they want to survey and attain competitive advantage. Among the most effective quality techniques that have been verified by several organizations from several sectors and countries, there is the Total Quality Management (TQM) technique. Besides, literature indicates that human capital is considered as the substantial source of growth and organizational sustainability of companies. In this sense, this study seeks to investigate the effect of human capital on the achievement of TQM. A questionnaire survey was developed and distributed to a sample of 146 employees working in companies installed in Tabuk region in Saudi Arabia. SPSS software program was used for statistical data analysis. Results showtwo critical success factors of TQM which are the cooperative and supportive leadership, and the employees' job satisfaction.
Applying Values-Engaged Approach to Evaluate the Impact of Self-Regulated Strategy Development Writing Program
Authors: Lin Su-Ching , Wu Ming-Sui , Tsai Lin-Ye
Published: May 2018

This case study aimed to apply the values-engaged approach to evaluate the impact of the Self-Regulated Strategy Development writing program (SRSDP) on the Grade 5 students, including the application of writing self-regulated strategy, writing motivation, and writing performance. The participants consisted of 26 Grade 5 students from the same class. The SRSDP had been implemented for 12 weeks. During the research period, based on the core perspective of values-engaged approach to evaluation, the researchers, particularly concerned with the experience and perception of those least well-served students. The data were collected through quantitative and qualitative approaches, composing of the Scales of Writing Self-Regulated Strategy, Writing Motivation, and Writing Performance, students’ worksheets, feedback sheets, and group focused interview. Quantitative Data analyses included descriptive analysis and dependent sample t-test. Qualitative data analyses consisted of organizing data, coding data, and analyzing and interpreting data. The study found that SRSDP provided remarkable positive influences on lower-level and middle-level students’ writing performance and their application of the application of writing self-regulated strategy. SRSDP also brought wonderful writing and learning experiences to the lower-level students. Based on the findings, the conclusion and discussion were also made in the study.
Local triple derivations from C$^*$-algebras into their iterated duals
Authors: Niazi Mohsen , Miri Mohammad Reza
Published: May 2018

We show that every local triple derivation from a C$^*$-algebra into any of its iterated duals is a triple derivation. This result partially solves a problem posed by M. Burgos \emph{et al.} in [Bull. London Math. Soc. 46 (4), 709-724 (2014)].
Nevanlinna's five-value theorem for derivatives of algebroid functions on annuli
Authors: Rathod Ashok M
Published: May 2018

In this paper, we first obtain the famous Xiong Inequality for algebroid functions on annuli and also generalise Nevanlinna's five-value theorem for derivatives of algebroid functions by considering weaker assumptions of sharing five values and small functions to partially sharing $k(\geq 5)$ values and small functions on annuli. As a particular cases of our results, we deduce several results.
Global analysis of stochastic SIR model with variable diffusion rates
Authors: M. Pitchaimani , S.P. Rajasekar
Published: May 2018

In this article, a stochastic SIR epidemic model with treatment rate in a population of varying size is proposed and investigated. For the stochastic version, we briefly discuss the existence of global unique solutions and using the Lyapunov function, the disease free equilibrium solution is globally asymptotic stabe if $\mathcal{R}_0\leq1$ and the endemic equilibrium solution is obtained when $\mathcal{R}_0>1$. The main attention is paid to the $p$th-moment exponentially stable on the system, proved under suitable assumptions on the white noise perturbations and the optimal control for the deterministic model. Finally numerical simulations are done to show our theoretical results and to demonstrate the complicated dynamics of the model.
Protrusive and retractive structures formed during cell migration
Authors: Kuzan Aleksandra , Michel Olga
Published: May 2018

Cell migration is essential to many physiological processes; however, it is also a cause of cancer metastasis formation and other pathological phenomena. Due to structural and functional variety of cells, a variety of structures formed by the cell membrane, which are designed to initiate or maintain cell movement, are observed. The work describes 12 such structures: lamellipodium, lamellum, filopodium, microspikes, blebs, lobopodium, invadopodium, podosomes, dorsal and peripheral ruffles, pseudopodium and uropodium. We described a characteristics of the structure, mechanism of its formation and occurrence. The key structural protein of almost all of these structures is actin, its polymerization pushes the cell membrane in the direction of movement. Formation of a specific protrusion depends on the actin binding proteins which regulate the process of G actin association to the filaments. For example, Arp2/3 determines
the formation of branched filaments, which results in the formation of wide, flat lamellipodium,
and fascin enables the formation of long bundles, which results in filopodia formation.
On the other hand, there is also an actin-independent way of movement, called amoeboid, in
which myosin plays a central role and on the cell surface appear vesicular structures called
blebs. Some structures are associated with proteolytic activity, particularly invadopodia and
podosomes, through which the cells can degrade extracellular matrix and penetrate deeper
into the tissues. These structures not only allow the extension of the cell body to enable migration,
but they can also be involved in the environment perception, serve as mechanosensors
and interact with other cells. The control of the formation of protrusive structures is of great
importance in oncology, immunology and cardiovascular medicine.
Neurobiological fundamentals of posttrumatic stress disorder – a possible role of circadian rhythms deregulations
Authors: Gałązka Małgorzata , Soszyński Dariusz , Dmitruk Katarzyna
Published: May 2018

Posttraumatic stress disorder is a complex anxiety disorder induced by a stress factor. It is believed that this fear conditioning impairment may be crucial to PTSD development. Stress induced electrophysiological and neurohormonal changes within the hippocampus, amygdala, prefrontal cortex or locus coeruleus may impair other regional functions of the central nervous system like suprachiasmatic nuclei functions. Furthermore, the activation of llocus coeruleus or its impact on the activity of superchiasmatic nuclei may influence the circadian
rhythm. The influence of stress factor on the hypothalamus – pituitary – adrenal gland axis
(HPA) activity is well documented. Also PTSD accompanied changes of the HPA axis are well
known. Unfortunately, due to methodological problems, the evaluation of stress induced HPA
axis circadian rhythm changes is limited. Another physiological parameter, characterised by
circadian rhythm is body temperature. Stress factor exposure induced a strong decrease in
the daily rhythm amplitude during day/night cycles in the animal model of PTSD. Described
disturbances to the rhythm was suprachiasmatic nuclei activity independent.
Parenting and materialism in children
Authors: Poraj-Weder Magdalena
Published: May 2018

The aim of the present study was to investigate the relation between child-rearing styles of the mother and father, and their children's materialism. 346 subjects, aged 20-35, took part in the study. To measure the variables, the following scales were used: My Childhood Memories, designed by Arrindell et al. (2001); the Material Values Scale designed by Richins (2004); the Priorities in Life Scale (2001); and the Motives for Making Money Scale, designed by Srivastav, Locke and Bartol (2001). The study has shown that the formation of a materialistic orientation is facilitated by negative parenting attitudes: rejection in the case of the mother and excessive protection in the case of the father. Positive attitudes have a two-directional impact. The father's positive attitude hinders the development of the materialistic orientation, while a similar attitude on the part of the mother may foster it.
The impact of nozzle configuration
on the heat transfer coefficient
Authors: Krupanek K. , Staszczyk A. , Sawicki J. , Byczkowska P.
Published: May 2018

Purpose: The purpose of this paper is to elaborate guidelines regarding geometric
configurations of a nozzle manifold that have an impact on the effectiveness of the
quenching process and occurrence of quenching distortions.
Design/methodology/approach: Within the framework of this study there an optimisation
of nozzle manifold geometry was carried out with the help of numerical simulations created
using Ansys CFX software. In the first stage, a simplification of the nozzle-sample system
reduced to a two-dimensional simulation was employed to determine the most optimal
location of the coolant stream. In the second stage, several arrangements of nozzle
manifolds were tested in a three-dimensional simulation. The parameters that were taken
into account included the rate of sample cooling, the uniformity of cooling with a sample
volume and heat coefficient takeover read from its surface.
Findings: The different active/inactive nozzle arrangements within the manifold and the
impact of the specific arrangements on the uniformity of heat transfer from the sample
surface were compared.
Research limitations/implications: The simulations carried out within the framework of
this study are one of the elaboration stages of a new flow heat treatment technology.
Practical implications: The application of an efficient cooling chamber in flow treatment makes it
possible to limit quenching distortions to a minimum. An optimal adjustment of cooling parameters
and cooling nozzle configuration to the shape of the element in order to make the cooling uniform
translate directly into a reduction in distortions. Avoiding the necessity to reduce distortions after
quenching means there is a significant reduction in detail production costs (grinding).
Originality/value: The concept of single-piece flow in the heat treatment for the mass
industry is developing rapidly and constitutes a fully automated element of a manufacturing
line, adjusted for the purposes of being included in the production process automatic
control system. It also makes it possible to conduct comprehensive and integration quality
supervision and management at the level of an individual element, which is not possible in
the case of batch heat treatment, which is a gap in the production process.
Study the precision of fixed partial
dentures of Co-Cr alloys cast over
3D printed prototypes
Authors: Dikova Ts. , Dzhendov Dzh. , Katreva Iv. , Tonchev Ts.
Published: May 2018

Purpose: of this paper is to investigate the accuracy of Co-Cr dental bridges, manufactured
using 3D printed cast patterns.
Design/methodology/approach: Four-unit dental bridges are fabricated from the
alloys i-Alloy and Biosil-f by lost-wax process. The polymeric cast patterns are 3D printed
with different layer’s thickness (13 μm, 35 μm and 50 μm). Two 3D printers are used:
stereolithographic “Rapidshape D30” and ink-jet “Solidscape 66+”. The geometrical and
fitting accuracy as well as the surface roughness are investigated.
Findings: It is established that Co-Cr bridges, casted from 3D printed patterns with 50 μm
layer thickness, characterize with the largest dimensions – 3.30%-9.14% larger than those
of the base model. Decreasing the layer thickness leads to dimensional reduction. The
dimensions of the bridges, casted on patterns with 13 μm layer thickness, are 0.17%-2.86%
smaller compared to the primary model. The average roughness deviation Ra of the surface
of Co-Cr bridges, manufactured using 3D printed patterns, is 3-4 times higher in comparison
to the bridge-base model. The greater the layer thickness of the patterns, the higher Ra of
the bridges. The silicone replica test shows 0.1-0.2 mm irregular gap between the bridge
retainers and abutments of the cast patterns and Co-Cr bridges.
Research limitations/implications: Highly precise prosthetic constructions, casted
from 3D printed patterns, can be produced only if the specific features of the 3D printed
objects are taken in consideration.
Practical implications: Present research has shown that the lower the thickness of the
printed layer of cast patterns, the higher the dimensional accuracy and the lower the surface
roughness.
Originality/value: The findings in this study will help specialist in dental clinics and laboratories
to choose the right equipment and optimal technological regimes for production of cast patterns
with high accuracy and low surface roughness for casting of precise dental constructions.
The Misconstruction of the Deductions for Business and Personal Casualty Losses
Authors: Kahn Jeffrey H.
Published: May 2018

Losses suffered on an individual’s personally used property generally are not deductible. Even after the changes made by the 2017 Tax Cuts and Jobs Act, in two circumstances an exception to this rule applies when “such losses arise from fire, storm, shipwreck, or other casualty, or from theft.” The principal issue that arises is determining the meaning of the term “other casualty.” Taking what they deemed to be the common elements in the three explicitly identified casualties, the courts and the Internal Revenue Service determined that an event will qualify as an “other casualty” only if it is “sudden,” “unusual,” and “unexpected.”This current definition of “other casualty” does not support the appropriate purpose of that provision. Applying this incorrect standard leads to unfair results in that the courts and the Service disallow deductions for some losses that should be deductible. Instead, courts and theService should look to the purpose of allowing a casualty and theft loss deduction. The key issues are whether a loss of property as a result of an outside force constitutes a personal consumption and whether the event causing the loss is one that is part of the ordinary vicissitudes of life. If not, allowing a deduction complies with the congressional purposes for allowing one in the two circumstances in which the deduction is currently allowed.
Um Pesquisador em Computação em Busca de um Modo de FazerPensar Pesquisas em Informática na Educação
Authors: Pimentel Mariano
Published: May 2018

In this paper, following an autobiographical research methodology, I tell my academic history in the pursuit of conducting and guiding rigorous researches on computers in education. I illustrate my narrative by citing my publication history in the SBIE (Brazilian Symposium on Computers in Education), the WIE (Workshop on Informatics in School) and in the RBIE (Revista Brasileira de Informática na Educação). I also present the reasons that led me to adopt the epistemological approach Design Science Research in the development of artefacts in scientific researches, as well as the Everyday Life’s School Studies as an alternative to positivism in the conduction of empirical studies. By telling my academic history, and by showing the importance of discussing the epistemological presuppositions of our research work, I aim at contributing to an increase in the quality of the researches developed by the community of Brazilian scholars that focus on computers in education.
Adaptabilidade de Objetos de Aprendizagem usando Calibragem e Sequenciamento Adaptativo de Exercícios
Authors: Silva Rômulo César , Direne Alexandre Ibrahim , Marczal Diego , Borille Ana Carla , Guimarães Paulo Ricardo Bittencourt , Cabral Angelo Da Silva , Camargo Bruno Filla
Published: May 2018

The work approaches theoretical and implementation issues of a framework for creating and executing Learning Objects (LOs) where problem-solving tasks are ordered according to the matching of two parameters, both calculated automatically: (1) student skill level and (2) problem solution difficulty. They are formally defined as algebraic expressions. The definition of skill level is achieved through a rating-based measure that resembles the ones of game mastery scales, while the solution difficulty is based on mistakes and successes of learners to deal with the problem. An empirical study based on existing students data demonstrated the suitability of the formulas. Besides, the motivational aspects of learning are considered in depth. In this sense, it is important to propose activities according to the student’s level of expertise, which is achieved through presenting students with exercises that are compatible with the difficulty degree of their cognitive skills. Also, the results of an experiment conducted with four highschool classes using the framework for the domain of logarithmic properties are presented.
Recomendação de Conteúdo em um Ambiente Colaborativo de Aprendizagem Baseada em Projetos
Authors: Acosta Otávio Costa , Reategui Eliseo Berni , Behar Patrícia Alejandra
Published: May 2018

The present work aims to investigate how a Project-based Learning (PBL) activity, supported by a technological environment developed for this purpose, can contribute to the development of projects by means of content recommendation resources and collaboration tools among peers. For this reason, an active learning approach is used, PBL, defined as a student-centered learning method that emphasizes activities for project development. For the application of the proposed method an educational activity was structured consisting in the development of a project based on students' investigations related to a topic proposed by the teacher. The development of this project starts and ends in the classroom, but the intermediate stages can occur in other places. For the execution of the activity, a tool was developed for fostering collaboration between students. For the execution of the activity, a tool was developed for fostering collaboration between students. This allows a higher interaction between participants and the possibility of students to collaborate on each other's projects. During the development of their projects, the tool suggests additional materials related to the subject at hand, as a way to assist students in their research processes. For the evaluation of the proposed work, a quali-quantitative case study was structured, with data collected through computer logs, the analysis of the students' projects, questionnaires and interviews. Results from the experiments performed showed that the educational activity proposed by this work has contributed significantly to the development of projects and for a higher interaction among students.
Efectos de un programa de actividad física en la calidad del sueño de escolares con TDAH
Authors: López Sánchez G. F. , López Sánchez L. , Díaz Suárez A.
Published: May 2018

Este artículo se centra en estudiar los efectos de un programa de actividad física sobre la calidad del sueño de un grupo de escolares con Trastorno de Déficit de Atención con Hiperactividad (TDAH). Han participado 12 escolares (12 niños), entre los 7 y los 12 años de edad. La calidad del sueño se ha medido mediante el Índice de Calidad del Sueño de Pittsburg. El procedimiento ha sido: pre-test, intervención y pos-test. La intervención ha consistido en 2 días a la semana de actividad física, 60 minutos al día, durante 12 semanas.  Se ha producido una mejora de la calidad del sueño en un 16.6 % de los escolares. Tras la intervención algunos escolares han mantenido su nivel de calidad del sueño y otros lo han aumentado.
Procedimientos de exploración y valores de referencia del rango de movimiento de la abducción de la cadera en deportistas. ¿Una herramienta en la prevención de lesiones?
Authors: Cejudo A. , Sainz de Baranda P. , Santonja F. , Ayala F.
Published: May 2018

El rango de movimiento limitado de la abducción de la cadera por una menor extensibilidad o cortedad de los aductores predispone a ciertas lesiones deportivas. Las pruebas angulares de la Abducciónde la Caderacon Pierna Recta (ABPR) y la Abducción de la Cadera en Flexión (ABF) deben incluirse en cualquier evaluación deportiva músculo-esquelética. La utilización de ambas pruebas exploratorias permitirá evaluar específicamente la extensibilidad aductora. Para la medición del rango será necesario el uso de un goniómetro de rama larga y de un inclinómetro con varilla telescópica. De manera general, se han encontrado elevados valores de fiabilidad relativa y absoluta en el test ABPR. Por el contrario, no se han encontrado estudios que analicen la fiabilidad del test ABF.
Estudio relacional de la práctica deportiva en escolares según el género
Authors: Chacón Cuberos R. , Arufe Giráldez V. , Cachón Zagalaz J. , Zagalaz Sánchez Mª L. , Castro García D.
Published: May 2018

Dado que la actividad física ha tomado protagonismo como medio para evitar estilos de vida sedentarios, resulta imprescindible conocer cuáles son los deportes practicados por los escolares fuera del horario escolar. Este estudio de carácter descriptivo y de corte transversal, realizado sobre 818 escolares, tiene como objetivo principal establecer hábitos de práctica deportiva en función del género, el cual ha actuado como factor modulador a lo largo de la historia. Los resultados determinaron que los escolares de género femenino practicaban principalmente deportes individuales y a modo de hobby, mientras que los varones lo hacían de forma colectica y federada. Asimismo, el nivel de práctica deportiva determinó que ellos practicaban más deportes que ellas, haciéndolo más días semanales y en sesiones de mayor duración. Como conclusión, se demuestran diferencias en el deporte practicado según el género, así como la necesidad de igualar esta práctica evitando estereotipos y estilos de vida sedentarios.  
Parasitos gastrointestinais em Puma concolor, Puma yagouaroundi e Leopardus pardalis (Carnivora: Felidae) na Floresta Nacional de Três Barras, SC, Brasil
Authors: Wrublewski Derlise Maria , Kusma Suellen Cristine , Teixeira Valéria Natascha
Published: May 2018

Parasitos ocorrem praticamente em todos os níveis tróficos e sua transmissão geralmente pode depender da presença de hospedeiros intermediários, paratênicos e definitivos dentro de um ecossistema. Entretanto, altas densidades de parasitos nos indivíduos podem expandir os danos em populações e ocasionar endemias. O presente estudo analisou a fauna parasitária a partir de exames coproparasitológicos de Puma concolor, Puma yagouaroundi e Leopardus pardalis, de material coletado em trilhas da Floresta Nacional de Três Barras, Santa Catarina, Brasil. Foram realizadas 10 coletas entre os meses de agosto de 2013 a fevereiro de 2014, e as espécies de felídeos foram identificadas através da análise do padrão microestrutural dos pêlos-guarda nas amostras fecais. Os exames coproparasitológicos foram realizados em 45 amostras pelos métodos de Willis e Hoffmann. Todas as amostras fecais estavam positivas para parasitos, demonstrando a presença de protozoários, nematódeos, trematódeos, cestódeos e ácaros. Foram identificadas 22 formas parasitárias em amostras de L. pardalis, sete em P. concolor e oito em P. yagouaroundi. Alguns parasitos identificados são comumente observados em felídeos, outros são provenientes da fauna parasitária das presas ingeridas, além de ovos de parasitos comuns em animais domésticos, demonstrando a presença da ação antrópica na área de estudo, o que pode ser considerado um agravante à situação de risco desses felídeos ameaçados de extinção.
Perfil do consumidor de carnes do Alto Pantanal sul-mato-grossense
Authors: Nascimento Júlia Dias , De Oliveira Dalton Mendes , Freitas Rocha Talita De Oliveira , Rohod Rosileide Vilalba , Piazzon Cleiton José , Escobar Loraine Saldanha
Published: May 2018

O objetivo deste trabalho foi avaliar o perfil dos consumidores do Alto Pantanal sul-mato-grossense, comparando o consumo e o local de aquisição das carnes de bovinos, aves, suínos, caprinos/ovinos e pescado. O estudo foi realizado no município de Aquidauana, localizado no Alto Pantanal sul-mato-grossense, com dados coletados entre agosto e novembro de 2015, por meio de questionário nos locais de comércio, com a participação de 501 consumidores. A carne menos consumida pelos entrevistados foi o pescado (31%) e a mais consumida, a carne bovina (84%). O principal fator citado para o consumo da carne bovina foi o sabor (60%). Para a carne de frango, o principal fator que influencia positivamente o consumo foi o custo (37%), sendo este fator também citado para o pescado, porém influenciando negativamente o consumo (16%). Observou-se que 38% dos entrevistados possuem preferência pelo mesmo estabelecimento para a aquisição de carne, e que a aparência da peça é o principal atributo para a sua aquisição (34%). Sobre a existência de selos de certificação de carne, 54% dos entrevistados declararam conhecer sua existência. Com relação aos cortes comerciais, a picanha bovina (Biceps femoris) foi o corte com a maior distância entre os valores de preferência e de consumo, sendo preferido por 12,8% dos consumidores, mas adquirido por somente 1,8%. Em contrapartida, para os cortes de frango o preferido foi o de maior consumo. Os consumidores do Alto Pantanal sul-mato-grossense apresentam como preferência de consumo a carne bovina. A facilidade de crédito nos estabelecimentos de comércio de carne é um fator relevante para a fidelização dos consumidores nesses estabelecimentos. A praticidade, a disponibilidade, o custo e o sabor da carne são fatores que influenciam a escolha por uma determinada espécie animal. Os consumidores possuem conhecimento sobre a existência de selos de certificação de carne, porém não os exigem para a compra. O consumidor de carne bovina escolhe o corte em função do custo prioritariamente à preferência, comportamento não observado para as outras espécies animais.
Effects of air temperature and humidity on average daily gain in feedlot cattle of different genotypes
Authors: Yazgan K. , Cedden F. , Daştanbek C.
Published: May 2018

Abstract. The purpose of this study was to observe Holstein, Brown Swiss, Simmental and cross breed Anatolian Black genotypes fattened in feedlot regarding their ability to tolerate temperature and humidity and to compare Temperature Humidity Index types under climatic conditions of Şanlıurfa province in Turkey. Data obtained from a commercial farm composed of 70 594 test day records of 11 117 cattle (6 513 Holstein, 3 546 Brown Swiss, 838 Simmental and 220 Anatolian Black Crosses). Meteorological data were provided from nearest weather station located 9.04 km away from feedlot area. THI values were calculated by using daily maximum, minimum and average air temperature and, humidity values according to three different combinations for each animal. Analysis were based on such a model that includes effects of year, sex, age, season, days on feed, beginning stage of fattening and several types of THI. Results showed that, Simmental and Anatolian Black genotypes were slightly more tolerant to heat stress compared to Holstein and Brown Swiss. In addition, Anatolian Black genotype was more sensitive to cold stress when compared to other genotypes. Different breakpoint values for stress and comfort zone intervals were obtained when different combinations of temperature and humidity variable (maximum or minimum) were used in THI formula.
Investigation of the premelanosome protein (PMEL or SILV) gene and identification of polymorphism excluding it as the determinant of the dilute locus in domestic rabbits (Oryctolagus cuniculus)
Authors: Fontanesi L. , Scotti E. , Colombo M. , Allain D. , Deretz S. , Dall’olio S. , Russo V. , Oulmouden A.
Published: May 2018

Abstract. After the rediscovery of the Mendel’s laws, the domesticated European rabbit (Orycolagus cuniculus) has been the objective of pioneering studies on coat colour genetics. However, despite the early role of this species in defining genetic mechanisms determining this phenotypic trait, only recently a few loci have been characterized at the molecular level analysing also in rabbits genes already shown to affect coat colour in mice. We herein investigated the rabbit premelanosome protein (PMEL) gene, also known as melanocyte protein Pmel 17 (PMEL17) or silver (SILV), as mutations in the homologous gene in mice and other species produce phenotypic effects similar to what is observed in the dilute coat colour in rabbit. The rabbit dilute locus is determined by a recessive coat colour mutation that dilutes the black to blue (grey) interacting with the basic colours influenced by the agouti and extension loci. To investigate this candidate gene, we isolated and sequenced cDNAs as well as portions of intronic and exonic regions of the PMEL gene in several rabbits with different coat colours and identified single nucleotide polymorphisms, including several missense mutations. One polymorphism, positioned in intron 7, was genotyped in a family in which there was segregation of the dilute coat colour. The results excluded PMEL as the causative gene for the dilute locus in rabbits, shortening the list of candidate genes that should be analysed to identify the mutation determining this phenotypic trait.
Superovulation in cows synchronized with two different progesterone+oestradiol protocols
Authors: Bülbül B. , Kırbaş M. , Dursun Ş. , Köse M.
Published: May 2018

Abstract. A total of 26 Brown Swiss cows were used to compare the synchronization and superovulatory response of follicle stimulating hormone treated cows that were synchronized with progesterone+oestradiol valerate or benzoate. Control cows (n = 8) were superstimulated with follicle stimulating hormone using twice daily injections with decreasing doses from day 10–13 after determined reference oestrus. Cows in treatment groups were received either ear implant (n = 9) containing norgestomet+oestradiol valerate or progesterone releasing intravaginal device (n = 9) containing progesterone+oestradiol benzoate, at random stage of the oestrus cycle, for 9 days. Seven days after the implant and progesterone releasing intravaginal device insertion, follicle stimulating hormone was injected as described in the control group. There was no significant difference between the groups for superovulation responses. In conclusion, both protocols synchronized the oestrus cycle in follicle stimulating hormone treated cows and, any of the protocols evaluated in this study can be used as a pretreatment for superstimulation started on the seventh day of the implant or progesterone releasing intravaginal device insertion in Brown Swiss cows.
Status of selenium and correlation with blood GSH-Px in goats and their kids in organic breeding fed with different levels of organic selenium
Authors: Antunović Z. , Klapec T. , Ćavar S. , Šperanda M. , Pavić V. , Novoselec J. , Klir Ž.
Published: May 2018

Abstract. The aim of this research was to determine how the supplement of organic selenium in the diet at different concentrations reflects on the content of blood Se and GSH-Px activity and their correlation in goats and their kids in organic breeding. The study included 24 Alpine goat breeds during lactation and their kids. Goats were divided into three groups depending on dietary treatments. Goats were fed with the cereals mixture 1 kg/per day in control group (C). Organic selenium supplied as selenised yeast in the first experimental group (E-I) 0.015 % and in the second experimental group (E-II) 0.030 % in cereals mixture. The addition of organic selenium significantly (P<0.01) increased blood Se of goats and kids in E-I and E-II groups in relation to C group and higher (P<0.05) in E-II in comparison with the E-I group. Concentrations of Se followed by GSH-Px activity, and were higher in the EI and E-II groups in comparison with C group. In the blood of suckling kids has determined higher (P<0.01) GSH-Px activity in E-I and E-II groups in relation to C group. It was also determined higher GSH-Px in the blood of kids E-II group compared to the EI group. Significant correlations was found between Se levels and GSH-Px activity in goats and kids, but were significant only in the goats of E-II group. The results obtained concentration of Se and GSH-Px in the blood goats and kids showed the validity of adding prganic selenium into food in organic breeding.
Effect of different fat supplements on the antioxidant capacity of cow’s milk
Authors: Puppel K. , Nałęcz-Tarwacka T. , Kuczyńska B. , Gołębiewski M. , Kordyasz M.
Published: May 2018

Abstract. This study examined the effect of different fat supplements on the antioxidants of cow’s milk. Thirty five Polish Holstein Friesian cows at 180±20 day of lactation and averaging 17.71±2.26 kg/d of milk were divided into five equal groups. There were five treatments groups: 300 g/d of fish oil, 500 g/d of Opal linseed, 500 g/d of Szafir linseed, 150 g/d of fish oil + 250 g/d of Opal linseed, 150 g/d of fish oil + 250 g/d Szafir linseed. Milk samples were collected five times during the 21 day of supplementation period: at the 1st, 14th and 21th day of the experimental period, and also at the 14th and 21st day after the supplement withdrawal. Diet supplementation with the Szafir linseed improved the chemical composition and milk yield at the 21st day of experiment. The highest level of malondialdehyde was recorded in fish oil, Opal linseed, fish oil + Opal linseed, and fish oil + Szafir linseed groups, and the lowest in the Szafir linseed group. After the 21st day of supplementation the concentration of α-retinol was significantly increased in all groups by 23 to 183 %. The highest level of α-tocopherol was found in fish oil + Opal linseed group at the 21st day of supplementation. Total antioxidative status increased in all experimental groups; however, the highest peak was recorded in fish oil + Szafir linseed and Szafir linseed group. The experiment confirmed that manipulation in cows’ diet may improve antioxidative capacity of milk.
Genetic parameters, genetic trends and inbreeding depression of growth and carcass traits in Pannon terminal line rabbits
Authors: Nagy I. , Gyovai P. , Radnai I. , Nagyné Kiszlinger H. , Farkas J. , Szendrő Z.
Published: May 2018

Abstract. Genetic parameters, inbreeding depression and genetic trends were estimated for average daily gain between the ages of 5-10 weeks and thigh muscle volume (measured in vivo with computerized tomography) in a group of 22 098 Pannon terminal line rabbits born between 2006 and 2011 and reared in 3 396 litters. The data sets were analysed with bi-variate animal models taking pedigree completeness (complete generation equivalent) into account. By 2011, all rabbits were inbred and the average inbreeding coefficient and complete generation equivalent of the population were 7.69 % and 11.89 %, respectively. Estimated heritability was moderate both for average daily gain (0.23±0.02) and thigh muscle volume (0.25±0.03). Litter effects were low for both traits (0.16±0.00 and 0.09±0.01 respectively). The genetic correlation coefficient estimate between average daily gain and thigh muscle volume was also low (0.02±0.08). Significant inbreeding depression (per 10 % inbreeding) was only detected for average daily gain (0.57 g/d). The estimated annual selection response was substantial both for average daily gain and thigh muscle volume (1.49 g/d and 5.84 cm3, respectively), proving the efficiency of the breeding programme.