bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of the Ratio between Pigment and Bleaching Gel on the Fracture Resistance and Dentin Microhardness of endodontically treated Teeth
Authors: Bandeca Matheus Coelho , Kuga Milton C , Jordão-Basso Keren CF , Tonetto Mateus R , Galloza Marina OG , Costa Samuel O , Tirintan Fabio C , Keine Kátia C
Published: November 2017

Introduction

The aim of this study was to evaluate the effects of bleaching gel using 35% hydrogen peroxide (HP), associated with red carmine pigment (RC), in the 3:1 or 1:1 ratio, on fracture resistance and dentin microhardness of endodontically treated teeth.

Materials and methods

A total of 40 lower incisors were endodontically treated and divided into four groups (n = 10), according to the bleaching protocol: G1 (HP3), 35% HP + RC (3:1); G2 (HP1), 35% HP + RC (1:1); G3 (positive), 38% HP; and G4 (negative), unbleached. Four dental bleaching sessions were performed. The dental crowns were restored after the last session and submitted to the fracture resistance test. Totally, 60 specimens from the endodontically treated lower incisor crowns were prepared to evaluate the effects on dentin microhardness. The analysis was measured (in Knoop) prior to and after the last dental bleaching session using similar bleaching protocols.

Results

G2 presented the lowest fracture resistance (p < 0.05). The other groups were similar to each other (p > 0.05). No difference was observed in the reduction of dentin microhardness among the groups (p > 0.05).

Conclusion

A 1:1 ratio (bleaching gel:pigment) caused a significant fracture resistance reduction in relation to the other protocols. No effect on the dentin microhardness reduction was observed.

Clinical significance

The pigment addition to the bleaching agent accelerates the bleaching chemical reaction. However, no studies have evaluated the ideal proportion to optimize tooth bleaching.

How to cite this article

Galloza MOG, Jordão-Basso KCF, Bandeca MC, Costa SO, Borges AH, Tonetto MR, Tirintan FC, Keine KC, Kuga MC. Effects of the Ratio between Pigment and Bleaching Gel on the Fracture Resistance and Dentin Microhardness of endodontically treated Teeth. J Contemp Dent Pract 2017;18(11):1051-1055.
Impact of Root Dentin Thickness on the in vitro Compressive Strength of Teeth treated with Recent Post and Core Systems
Authors: Mogla Sahil , Bhagat Amit , Mittal Litik , Kaur Tawanpreet , Dheeraj Munish , Marwah Gursimran
Published: November 2017

Introduction

Endodontically treated teeth dry with time, and its dentin undergoes changes making the teeth brittle and friable. The main function of a post is to strengthen or reinforce a weakened root. However, doing a post and core frequently requires the removal of sound tooth tissue. Recent materials introduced in the market for post and cores have been promising.

Aim

The aim of this study is to evaluate the fracture resistance of endodontically treated extracted permanent teeth with variable remaining root dentin thickness after post space preparation.

Materials and methods

A total of 270 freshly extracted permanent maxillary central incisors with fully formed apices were selected, decoronated at cementoenamel junction, and divided into three main groups according to remaining root dentin thickness, determined using a Vernier caliper into 0.5, 1, and 1.50 mm after post space preparation. Each group was further divided into three subgroups (subgroup a: Custom-made cobalt–chromium alloy post and core; subgroup b: Prefabricated glass fiber post and composite core; and subgroup c: EverStick fiber post). Each specimen was subjected to compressive load using universal testing machine. The force required to fracture was recorded and data were analyzed using analysis of variance (ANOVA) test.

Results

Analysis of variance revealed that compressive strength of the tooth is significantly affected by the increase in the remaining dentin thickness after post space preparation (p < 0.05). Furthermore, teeth with custom fabricated posts showed a significantly higher compressive strength (p < 0.05) than prefabricated glass fiber post and EverStick fiber post groups except the group with minimum remaining dentin thickness.

Conclusion

The presentin vitrostudy revealed that compressive strength of the post and core systems is directly related to the amount of healthy remaining dentin thickness. Hence, efforts to maximize the preservation of natural dentin should be taken during post space preparation.

How to cite this article

Bhagat A, Mittal L, Mogla S, Kaur T, Dheeraj M, Marwah G. Impact of Root Dentin Thickness on thein vitroCompressive Strength of Teeth treated with Recent Post and Core Systems. J Contemp Dent Pract 2017;18(11):1065-1070.
Potential Predictor of Tobacco Cessation among Factory Workers: A Baseline Data of Worksite Tobacco Cessation Programs in the Central Part of India
Authors: Gaikwad Rahul , Bhowate Rahul , Bajad Payal , Gondivkar Shailesh
Published: November 2017

Aim

Our study aimed to evaluate the prevalence of tobacco use among factory workers and identify the predicting factors for quitting tobacco use.

Materials and methods

In this cross-sectional study, a total of 640 factory workers were included and divided into the quitter group and who had never quit the tobacco habit in the past. Data were collected by standardized and validated questionnaire pro forma, which comprised the demographic profile, smoking history, and Fagerström scale to check the nicotine dependence. Data were analyzed using descriptive analysis and Chi-squares test, whereas logistic regression was used to predict the factor for quitting the tobacco habit. All tests were applied using Statistical Package for the Social Sciences (SPSS) version 17.0.

Results

The mean age among the quitters was comparatively low than the never-quit group. Out of 640 participants, the majority of quitters and those who never quit were found to consume smokeless tobacco (232 [93.5]; 288 [73.5]). As per logistic regression analysis, gender of participants, age of starting tobacco use, and frequency of tobacco use can be considered as good predictors to quit smoking/chewing tobacco.

Conclusion

The present study found that participants in the quitter group were less dependent on tobacco, and these participants were more likely to quit smoking if behavioral support was provided at the early days of the quitting attempt.

Clinical significance

This study's result provides valuable insight into the current tobacco usage and potential predicting factors for quitting tobacco use among factory workers in India. These data can help in developing a policy for the implementation of tobacco cessation programs at the worksite.

How to cite this article

Gaikwad R, Bhowate R, Bajad P, Gadbail AR, Gondivkar S, Sarode SC, Sarode GS, Patil S. Potential Predictor of Tobacco Cessation among Factory Workers: A Baseline Data of Worksite Tobacco Cessation Programs in the Central Part of India. J Contemp Dent Pract 2017;18(11):1071-1077.
Effect of Periodontal Therapy on Crevicular Fluid Interleukin-18 Level in Periodontal Health and Disease in Central Maharashtra (India) Population
Authors: Mahajani Monica J , Jadhao Varsha A , Wankhade Pooja S , Samson Emmanuel , Acharya Vishwas D , Tekale Pawankumar D
Published: November 2017

Aim

The incidence and progression of the periodontal disease depend on periodontal microflora and the multifaceted response of the host, and these interactions are mediated by cytokines and chemokines. Interleukin-18 (IL-18) is a proinflammatory cytokine of the IL-1 superfamily. The aim of the present study was the assessment of the periodontal therapy in IL-18 level in periodontal disease and health.

Materials and methods

Based on clinical attachment loss (CAL), probing pocket depth (PPD), gingival index (GI), and plaque index (PI) patients were divided into three groups: Group I with healthy patients, group II with chronic periodontitis, and group III with posttreatment patients having periodontitis.

Results

Mean PI, PPD, CAL, and gingival crevicular fluid (GCF) volume were significantly higher in groups II and III compared with group I. However, there were no significant differences between GI in groups I, II, and III. The total amount of IL-18 in GCF was significantly higher in group II when compared with groups I and III (p < 0.05).

Conclusion

The present study confirmed that the IL-18 level in GCF was lower in healthy patients, higher in periodontally involved patients, and reduced at baseline, 3 and 6 weeks after nonsurgical periodontal therapy.

Clinical significance

The IL-18 might be hypothetically beneficial in distinguishing health from disease and monitoring periodontal disease activity.

How to cite this article

Mahajani MJ, Jadhao VA, Wankhade PS, Samson E, Acharya VD, Tekale PD. Effect of Periodontal Therapy on Crevicular Fluid Interleukin-18 Level in Periodontal Health and Disease in Central Maharashtra (India) Population. J Contemp Dent Pract 2017;18(11):1085-1089.
Raindrop Fall Velocities from an Optical Array Probe and 2D-video Disdrometer
Authors: Bringi Viswanathan , Thurai Merhala , Baumgardner Darrel
Published: November 2017

Abstract. We report on fall speed measurements of rain drops in light-to-heavy rain events from two climatically different regimes (Greeley, Colorado, and Huntsville, Alabama) using the high resolution (50 microns) Meteorological Particle Spectrometer (MPS) and a 3rd generation (170 microns resolution) 2D-video disdrometer (2DVD). To mitigate wind-effects, especially for the small drops, both instruments were installed within a 2/3-scale Double Fence Intercomparison Reference (DFIR) enclosure. Two cases involved light-to-moderate wind speeds/gusts while the third case was a tornadic supercell that passed over the site with high wind speeds/gusts. As a proxy for turbulent intensity, maximum wind speeds from 10-m height at the instrumented site recorded every 3 s were differenced with the 5-min average wind speeds and then squared. The fall speed versus size from 0.1–2 mm were derived from the MPS data and the 2DVD was used for sizes > 0.7 mm. Consistency of fall speeds from the two instruments in the overlap region (0.7–2 mm) gave confidence in the data quality and processing methodologies. Our results indicate that under light-to-moderate wind gusts, the mean fall speeds agree well with fits to the terminal velocity measured in the laboratory by Gunn and Kinzer from 100 microns up to precipitation sizes. In the supercell case the very strong gusts and inferred high turbulence intensity caused a significant broadening of the fall speed distributions with the mean fall speeds about 25–30 % less than the terminal velocity of Gunn-Kinzer, i.e. sub-terminal fall speeds.
Advection and dispersion of bedload tracers
Authors: Lajeunesse Eric , Devauchelle Olivier , James François
Published: November 2017

Abstract. We use the erosion-deposition model introduced by Charru et al. (2004) to simulate numerically the evolution of a plume of bedload tracers entrained by a steady flow. In this model, the propagation of the plume results from the stochastic exchange of particles between the bed and the bedload layer. We find a transition between two asymptotic regimes. At early time, the tracers, initially at rest, are progressively set into motion by the flow. During this entrainment regime, the plume, strongly skewed in the direction of propagation, continuously accelerates while spreading non-linearly. With time, the skewness of the plume eventually reaches a maximum value before decreasing. This marks the transition to an advection-diffusion regime in which the plume becomes increasingly symmetrical, spreads linearly, and advances at constant velocity. We derive analytically the expressions of the position, the variance and the skewness of the plume, and investigate their asymptotic regimes. Our model assumes steady state. In the field, however, bedload transport is intermittent. We show that the asymptotic regimes become insensitive to this intermittency when expressed in terms of the distance traveled by the plume. If this finding applies to the field, it might provide an estimate for the average bedload transport rate.
The Challenges of Linking Pay and Promotion: Repeated Reforms of the European Commission Staff Appraisal Process
Authors: Ban Carolyn
Published: November 2017

In response to the 1999 crisis caused by the mass resignation of the European Commission, the Commission introduced a series of administrative reforms based in large part on New Public Management models.  A centerpiece of those reforms was a new staff appraisal process linking numeric ratings with promotions, which was designed explicitly to change the management culture of the Commission.  Of all parts of the reform, this was by far the most controversial.  This paper traces the long arc of reform, as the original reform was replaced with a second version that was even more rigid and complex, leading to a third reform, in 2012, which returned the Commission in large part to the status quo ante, abandoning numeric ratings and the formal link to promotions.  I analyze the reasons for the reforms and the problems and unintended consequences of each.  In conclusion, I link this saga of repeated reforms to the broader literature on the effectiveness of attempts to change organizational culture through formal structural reforms.
Chinese Christianity: The Study of Indigenous Theology in Twentieth-Century China
Authors: Ng Dennis Tak Wing
Published: November 2017

Scholars have been discovering the rich and diverse cultures in Asia and their possible contribution to the study of world Christianity today. The present article is an attempt to explore Chinese Christianity by studying two indigenous theologians in early and mid-twentieth-century China, Francis Wei and T. C. Chao. Attention is given to expounding their theologies on cultural and religious diversity and their understanding of indigenous Christianity in an Asian context. Special references are made to what they said in mid-twentieth-century China that may be traced back to the Jerusalem Conference of 1928. It is found that the work and theology of Wei and Chao are still of great relevance to our recent discussions on world Christianity, especially with regard to the interpretation of Christianity through Chinese culture, illustrating a typical example of using ethnic cultures almost a century ago.
Cotyledonoid dissecting leiomyoma with intravascular growth pattern and intra-tumoural endometrial glands and stroma: A case report
Authors: Merchant Khurshid , Chern Bernard , Chew Sung Hock
Published: November 2017

Cotyledonoid dissecting leiomyoma (CDL) is a rare variant of leiomyoma which shows a dissecting growth pattern of smooth muscle cells within the myometrium, with or without extra-uterine extension, and a macroscopic appearance resembling placenta. We present a unique case of CDL with both intravascular growth and presence of endometrial glands and stroma within the tumour. A 35-year-old female patient presented with menorrhagia. Ultrasound examination revealed a bulky anteverted uterus with a prolapsed submucosal leiomyoma and an intramural leiomyoma. In the interest of preserving fertility, she underwent myomectomy together with laparoscopic resections of the uterine wall deposit and myometrial tissue. The tumour was soft and pink, with a resemblance to placental tissue, and histology demonstrated nodules of neoplastic smooth muscle cells with areas of oedema and myxoid change dissecting into the surrounding myometrial tissue, which is consistent with the features of CDL. Also seen were non-neoplastic endometrial glands cuffed by stroma located within the smooth muscle tumour as well as in the non-neoplastic myometrium. There were foci of intravascular luminal growth confirmed by positive CD31 immunohistochemical staining of the endothelial cells lining the vascular lumina. The present case demonstrates that CDLs may have a unique histological appearance resembling adenomyoma and an intravascular growth pattern. It is important for pathologists, gynaecologists and radiologists to recognize such smooth muscle tumour variants and hence prevent misdiagnosis of malignancy and overtreatment.
The Translator’s Subjectivity in The Golden Cangue from the Perspective of Feminism
Authors: Wu Chunrong , Tan Fei
Published: November 2017

The feminist translation theory holds that translators who bear social, cultural, and gender features are bound to putsome special brands into their works in the process of translation. The Golden Cangue, one feminism novel, isself-translated by Eileen Chang, a famous Chinese writer, and released overseas. The paper starts with a briefintroduction to some relevant theories about feminism translation and the subjectivity of translators; next, a profoundstudy on the English version of The Golden Cangue is carried out through the analysis of the strategies used in somesentences reflecting the subjectivity of translators; finally, the paper provides some introspections and weaknessabout the subjectivity of translators.
English Syllabus Change on the Basis of School Based Curriculum Development within the Context of a Western Mexican University
Authors: Peralta Castro Fernando Manuel
Published: November 2017

This study aims to investigate the process of improving the English language syllabus within the context of aWestern University in Mexico. It was an Action Research investigation which involved the participation of a groupof teachers, who played a predominant role during the research, evaluating the original syllabus, producingdescriptions resulting in a detailed characterization of it. They also designed a new syllabus, and finally theyevaluated the process of improving it. Findings of the study demonstrate that language teachers engaged in a processof analysis and reflection are led to make decisions and changes based on local needs. Findings also demonstrate that,even when teachers showed the greatest willingness to participate in the study they also faced serious challenges.
The Influence of Social Support on the Prosocial Behavior of College Students: The Mediating Effect based on Interpersonal Trust
Authors: Guo Yuan
Published: November 2017

A sample of 720 college students from 10 different universities at the Guangzhou Higher Education Mega Center are investigated using the Social Support Scale, the Prosocial Behavior Scale, and the Interpersonal Trust Scale. Data are analyzed using SPSS20.0 and Amos7.0. Results show that the subjective support and support utilization of college students directly influences prosocial behavior, and indirectly affects prosocial behavior through the influence of emotional trust and quality trust. Additionally, interpersonal trust plays an intermediary role in the influence of social support on pro-social behavior.
Morphological Derivations: Learning Difficulties Encountered by Public Secondary School Students in Amman/Jordan
Authors: Naseeb Maha Zouhair , Ibrahim Majid Abdulatif
Published: November 2017

This study aims at investigating the difficulties encountered by public school students in Amman/ Jordan. The study raises the following questions: What are the obstacles that students may encounter in relation to the derivations? What are the causes of such obstacles? To achieve the aims of the study, the researchers manipulate two methods: A quantitative approach in which students of public secondary schools are tested and pre-tested in order to fulfil the reliability and validity of the results and a qualitative approach using interviews with teachers at the same secondary schools and one supervisor in Amman Third Educational Directorate (AL-Qwesmeh). The main results the study reaches can be summed up as follows: students are so poor not only in derivations and derivational suffixes but also in other linguistic topics. In other words, the problem of committing mistakes in derivational suffixes can obviously be regarded as being accumulative problem resulting from other problems which students are encountering in relation to, for example, parts of speech, word order or sentence patterns. Derivations and derivational suffixes should be taught in early stages such as the 8th grade or 9th grade rather than in the last ones like 11th grade or 12th grade.
Optimal Control of Evolution Macro-Hybrid Mixed Variational Inclusions
Authors: Alduncin Gonzalo
Published: November 2017

Optimal control problems governed by primal and dual evolution macro-hybrid mixed variational state inclusions, in reflexive Banach spaces, are studied. This is a spatially localized macro-hybrid variational version of our mixed optimal control theory published in Appl. Math. Optim. 68, 2013, 445-473, where the solvability analysis of the state systems is given in terms of duality principles, and the mixed optimality analysis is performed via a perturbation conjugate duality method. Applications to nonlinear constrained problems from mechanics exemplify the theory.
A Sociological Study on Arthur Miller’s Death of a Salesman and All My Sons, Based on Georgy Lukacs’s Theories
Authors: Shahri Fatemeh Pakdaman
Published: November 2017

Society and its human relations have always had a mutual connection with arts and culture; thus, the majority of artistic creations have always reflected images of society in the very heart of them. Sociological Studies of art, as an independent field does have a long history, however with the rise of modern social fields of study in the 19th and 20th century, there has been a significant growth in sociological studies.Georgy Lukacs as a pioneer theorist in the sociology of arts and literature has led a series of studies in the field of modern drama. This study has attempted to analyze Arthur Miller’s two significant plays, Death of a Salesman and All My Sons, based on Lukacs’s theories, along with discovering the methods, which Miller has depicted to process and interweave social concepts and phenomena within his works. This being done, a potential map has been drawn as a clear sample for dramatists of the modern era of playwriting on how to relate to social and cultural issues, not only in a descriptive method but in an analytical, critical way.
Adaptief beleid en beleidsevaluaties
Authors: Hermans Leon
Published: November 2017

Adaptief beleid en beleidsevaluaties

Er is de laatste tijd veel aandacht voor het omgaan met onzekerheid en dynamiek in beleid. Zo is er recent de roep om leren door doen, door een overheid die samen met de samenleving het experiment aan durft te gaan. Zo’n benadering van beleid als gezamenlijk experiment is veelbelovend, maar vergt ook passende methoden voor beleidsevaluaties. Adaptief beleid speelt hierop in. De laatste jaren is een belangrijke stap gezet in de ontwikkeling van methoden waarmee adaptief beleid ontwikkeld kan worden. Voor de evaluatie en de rol van evaluaties heeft dit belangrijke implicaties. In dit artikel wordt hierop verder ingegaan, op basis van ervaringen met adaptief beleid en beleidsevaluatie binnen het Nederlandse Deltaprogramma.
Exploring comparative curricular research in geography education
Authors: Bagoly-Simó Péter
Published: November 2017

Geography curricula is one of the least researched fields in geography education. This paper offers a brief description of the curricular architecture, aims, content, philosophies, epistemologies, and main factors influencing school geographies in Germany and Romania to prepare the development of analytical tools for future comparative studies. The conclusions of this study show that despite the uniqueness of every national or regional setting, there is a considerable number of similarities in how geography is conceived as a school subject, which can be the starting point to facilitate comparison.
Ciężar dowodu – zagadnienie z pogranicza prawa
cywilnego materialnego i procesowego
Authors: Andrych-Brzezińska Izabela
Published: November 2017

The burden of proof has two interrelated aspects: material and formal aspect. Material aspect of the burden of proof allows to decide every civil trial – even that where the evaluation of the evidence left some doubts in the judge’s mind. The formal aspect of the burden of proof indicates the direction of the trial, especially when it comes to taking evidence. It is the party, not the judge, who bears the burden of producing evidence. It is also the party who has to persuade the trier of the fact of the truth of the alleged facts. But it is the institution of the burden of proof that allows the judge to decide every case. For that reason regulations governing the burden of proof are present in all proceedings. What is not commonly agreed is the answer to the question: does the issue of burden of proof belong to substantive law or is it a matter of litigation. The presented article tries to closer the arguments of both sides.
Языковое судебное толкование
Authors: Minnikies Eliasz , Pirmajew Eugeniusz
Published: November 2017

The article shows the importance of the language of judicial interpretation as one of the types of legal interpretation. The basic features of the language of judicial interpretation prompted the author’s definition.
Wpływ idei naukowych Eugeniusza Waśkowskiego na współczesną
polską doktrynę prawa postępowania cywilnego
Authors: Rylski Piotr
Published: November 2017

This article aims at presenting of influence the legal concepts of Prof. Eugeniusz Waśkowski on Polish modern civil procedure’s doctrine. It focuses three main areas: the importance of the very first Polish handbooks and systems written by Waśkowski, some articles of this author concerning crucial procedural issues and finally the variety of interests of Waskowski in his research in legal studies.
Взгляды профессора Е. В. Васьковского на систему
российского гражданского права и современность
Authors: Szerstobitow Andriej
Published: November 2017

The article is devoted to the views of Professor E. V. Vaskovsky on the system of Russian civil law of the late XIX beginning of XX centuries. Giving a presentation on the civil law system E. V. Vaskovsky, first of all, emphasizes the feasibility of isolation in a special section of the general part. The most important parts of civil law system, he believes property law, law of obligations, family law and inheritance law, constitute a special part of civil law. Author composed of sections, which are section of the special part of civil law, including the rights materialized, embodies the bearer. Summing up the views of E. V. Vaskovsky on the system of civil law, it should be noted that along with the traditional inclusion of family law, the novella is extremely large character that took place in the end of XIX century in the field of legal regulation of intellectual creativity, and found in it reflected.
Further, the article presents a generalized analysis of the current system of the Russian civil law. The concept of the civil law system, all also based on the division into the general and special part. Now, however, in the civil law system is allocated a number of subbrunches. Selecting subbrunches of the modern civil law associates with the isolation of each of them with their own general part. Currently, the structure of the special part of civil law includes the following subbrunches: corporate law; property law; inheritance law; law of obligations; the law of “intellectual property”; commercial law. Historical experience has shown that the “materialized rights” that E. V. Vaskovsky also singled out in the structure of the special part of civil law did not subbrunch of the modern Russian civil law, as the rapid development of the stock exchange trade resulted in the so-called “dematerialization” of securities, which is the main instrument of the stock market. Currently, the data set of rules should be considered as one of the most important institutions of commercial law as a subbrunch of modern civil law.
Gamificando a sala de aula: desafios e possibilidades em uma disciplina experimental de Pensamento Computacional no ensino fundamental
Authors: Gomes Tancicleide , Tedesco Patricia
Published: November 2017

O uso de elementos de jogos na educação, quando bem planejado, torna o fracasso interessante e mantém os participantes engajados e otimistas. De acordo com a literatura, essas características são relevantes em experiências introdutórias de programação. O presente estudo relata uma experiência em andamento que investiga o uso da gamificação em uma disciplina de pensamento computacional no ensino fundamental. Os resultados iniciais encontrados mostram que a abordagem desenvolvida, apesar de ser considerada divertida não se mostra suficientemente engajadora para os alunos mais velhos.
SwAspie: proposta de um Software para as fases pré-silábica e silábica da alfabetização de crianças com Transtorno do Espectro Autista
Authors: Barbosa Cinthyan R. , Coelho Neto João , Vasconcelos Guilherme
Published: November 2017

O presente trabalho irá relatar os passos do desenvolvimento de software para alfabetização nas fases pré-silábica e silábica, denominado de SwAspie, para crianças com Transtorno do Espectro Autista. Este trabalho faz um breve encaminhando de aporte teórico e o procedimento escolhido para o desenvolvimento do software proposto. Desse modo, será apresentado o conteúdo de alfabetização desenvolvido, bem como as propostas futuras, que servirão de apoio aos professores, pais e demais profissionais na alfabetização de alunos com este transtorno do neurodesenvolvimento.
RoPE - Brinquedo de Programar e Plataforma de Aprender
Authors: Raabe André Luís Alice , Santana André Luiz Maciel , Martins Rodrigo Ramos , Souza Felipe Teixeira , Rosário Tatiane , Silva Raphael
Published: November 2017

O artigo descreve a concepção, aprimoramento e resultados de uso do RoPE - Robô Programável Educacional em escolas de Educação Infantil. O RoPE foi construído para possibilitar crianças de 4 a 8 anos a terem os primeiros contatos com conceitos matemáticos e algorítmicos, mas sua utilização pelos professores tem ultrapassado a intenção inicial tornando-se uma plataforma de aprender, na qual professores e crianças constroem projetos na forma de micromundos para explorar o brinquedo de forma integrada ao planejamento pedagógico do professor.
Desenvolvimento de um Ambiente de Robótica Educacional para o Ensino de Programação com Hardware Livre
Authors: Cerci Rafael , Ferreira Julio C. S. , Monte-Alto Helio
Published: November 2017

O uso de tecnologias, tais como a robótica educacional em sala de aula, torna o processo de ensino e aprendizagem mais lúdico, contribuindo para despertar um maior interesse nos estudantes. A ferramenta abordada neste trabalho é um robô que desenha em uma lousa, de fácil manipulação em sala de aula e de baixo custo para a sua construção, por ser baseado em hardware e software livres. Pretende-se, a partir desse protótipo, desenvolver um ambiente integrado de software e hardware como uma versão de um ambiente de programação Logo, no qual os alunos fornecerão comandos similares aos de uma linguagem de programação Logo para que o robô desenhe utilizando conceitos matemáticos, contribuindo para com o desenvolvimento do pensamento computacional e matemático dos alunos. Este trabalho apresenta a montagem do hardware e os testes preliminares que já foram realizados, assim como a arquitetura de software da aplicação projetada e os próximos passos.
Sistema Web Para Apoio ao Ensino da Pronúncia do Idioma Inglês Americano
Authors: Pereira José F. , Franco Matheus E. , Santos Caroline
Published: November 2017

O ensino da língua inglesa é grande relevância, sendo que a utilização das tecnologias da informação e comunicação neste processo é importante. Assim, este artigo descreve a implementação e avaliação de um sistema web para apoio ao processo de ensino aprendizagem da pronúncia a língua inglesa. Os resultados indicam que o sistema web desenvolvido é promissor tendo em vista a avaliação positiva por parte de estudantes e professores da área.
Análise do Laboratório Remoto de Robótica Educacional (LERO) como Ferramenta de Ensino e Aprendizagem de Introdução à Programação
Authors: Flores Crijina , Santos Railane , Araújo Stenio
Published: November 2017

Este trabalho resulta do estudo de viabilidade de inserção do Laboratório Remoto de Robótica Educacional (LERO) como forma de complementar o ensino e aprendizagem de lógica de programação. A pesquisa da qual ele parte foi realizada em duas etapas: na primeira etapa, a turma foi dividida em grupos e realizou uma atividade utilizando o LERO; na segunda etapa, quatro alunos realizaram a mesma atividade e avaliaram a plataforma de modo individual. Os dados obtidos através de questionários e entrevistas foram apresentados de maneira descritiva e quantitativa. Constatou-se que o LERO, apesar de apresentar algumas limitações, pode atuar como ferramenta complementar no ensino de Programação de Computadores.
Uma ação de formação orientada pela/para estudo da aprendizagem ubíqua
Authors: Plaça Jaqueline Santos Vargas , Camilotti Dirce Cristiane , Scherer Suely
Published: November 2017

Neste artigo apresenta-se uma investigação que teve por objetivo analisar a compreensão de formadores de um NTE sobre a aprendizagem ubíqua, em uma ação de formação, em que se buscou a sua caracterização e possibilidades na educação formal. É uma pesquisa qualitativa em que foi realizada a análise exploratória das ações dos participantes, produções de textos e socialização realizada. As análises evidenciaram que alguns participantes identificaram, durante a ação inicial, características da aprendizagem ubíqua, outros depois da interação com colegas e a mediação das pesquisadoras. Nas propostas de ações práticas, ainda aparecem poucos elementos da aprendizagem ubíqua em contextos de educação híbrida.
Utilizando Scratch e Arduino como recursos para o ensino da Matemática
Authors: Sales Selma Bessa , Silva Ronald Brasil , Sobreira Elaine Silva Rocha , Nascimento Marcos Dionisio Ribeiro do
Published: November 2017

O presente artigo objetiva relatar a experiência de uso do Arduino programado com Scratch para o desenvolvimento de conteúdos de matemática. Foi desenvolvido com alunos da Educação Básica, com faixa etária entre 11 e 16 anos, em uma escola da rede pública municipal de Fortaleza. A problemática central envolveu a seguinte questão: A programação com Scratch e o uso de plataformas de prototipagem física podem potencializar o interesse dos alunos pelas aulas de geometria? Diante dessa questão, propomos uma sequência didática na qual os alunos criaram e programaram cubos de LED nas aulas de matemática, desenvolvendo aprendizagens relacionadas ao Pensamento Computacional e a geometria. Observamos que os alunos foram capazes de interagir e aprender matemática com êxito, em um ambiente de aprendizagem motivador, utilizando a linguagem de programação.
Usando Smartphones, QR Code e Game of Thrones para Gamificar o Ensino e Aprendizagem de Termometria
Authors: Silva Denis , Dias Raquel , Flippert Vania , Boscarioli Clodis
Published: November 2017

Este artigo objetiva apresentar a experiência da aplicação de uma atividade pedagógica (dinâmica de jogo) elaborada com o intuito de fixar os conteúdos da Física, especialmente os de termometria, trabalhados em sala de aula com alunos do segundo ano do Ensino Médio de uma escola pública, por intermédio do uso da tecnologia QR Code, de elementos da gamificação, do incentivo à aprendizagem móvel usando os celulares dos alunos e de seus interesses pela série Game of Thrones. Constatou-se que atividade como essa motiva e fomenta a cooperação entre os estudantes, auxilia na superação da falta de estrutura tecnológica na escola e possibilita novos olhares sobre o ensino-aprendizagem por meio de dispositivos móveis.
Pensamento computacional na formação de professores: experiências e desafios encontrados no ensino da computação em escolas públicas
Authors: Silva Vladimir , Silva Klebson , França Rozelma
Published: November 2017

O ensino de computação, como ciência, nas escolas públicas do Brasil ainda não é uma realidade, apesar de haver iniciativas sobre o tema. Inúmeros fatores contribuem para isso, como a falta de políticas públicas para a integração da computação no currículo escolar, o investimento em tecnologias educacionais e a da formação docente para uso desses recursos. Neste contexto, a disciplina Estágio Curricular V do curso de Licenciatura em Computação da Universidade Federal Rural de Pernambuco oportunizou a vivência de um projeto de formação de professores de escolas públicas em pensamento computacional (PC), buscando difundir a computação como uma ciência interdisciplinar. Como resultados deste projeto, pode-se mencionar que antes da formação os professores não possuíam conhecimento sobre o tema PC, contudo, ampliaram sua percepção sobre o tema, sob olhares interdisciplinares e manifestaram pretensão de aplicar os conhecimentos construídos em suas salas de aula.
Emotional Impact on the User Experience in the Virtual Learning Environment
Authors: Nogueira Tiago , S. Neto Raimundo N. de A.
Published: November 2017

Este artigo analisou o Impacto Emocional da Experiência dos Usuários (UX) durante as interações realizadas em Ambientes Virtuais de Aprendizagens. Para tal, aplicou-se o método Affect Grid que classifica oito tipos de emoções sentidas pelos usuários. O trabalho contou com uma amostra de 12 alunos do curso de Licenciatura em Computação da Universidade Estadual de Goiás. Foram analisadas e classificadas sessenta respostas durante as interações das tarefas executadas no Ambiente Virtual de Aprendizagem, observando o Impacto Emocional de cada tarefa. Os resultados sugeriram que, através da aplicação de métodos UX é possível extrair as emoções sentidas pelos usuários durante as interações em Ambientes Virtuais de Aprendizagem, contribuindo significativamente para a qualidade na Usabilidade nestes ambientes.
Diminuindo a distância entre o envelhecer e a tecnologia móvel: uma proposta de curso
Authors: Hayashi Elaine , Baranauskas M. Cecília
Published: November 2017

Este artigo apresenta e discute o processo de criação do conteúdo programático de um curso de extensão que foi oferecido dentro do Programa [nome omitido para Blind Review]. O programa tem como público alvo pessoas da meia idade e terceira idade e oferece programação variada com diversos cursos, workshops e palestras. Com o objetivo de aproximar essas pessoas das formas de comunicação atuais, o curso "Letramento em Tecnologias Móveis"; buscou fornecer recursos para que os participantes pudessem explorar e aprender por si próprios como usar a sempre mutante tecnologia contemporânea. Avaliação de respostas afetivas mostram resultados positivos em relação a prazer, empolgação e domínio/conforto, sugerindo a efetividade da proposta de conteúdo e metodologia deste curso, desenhado especificamente para as atividades, habilidades e necessidades específicas deste grupo de pessoas.
Economic implications in inflammatory bowel disease: results from a retrospective analysis in an Italian Centre
Authors: Variola Angela , Massella Arianna , Geccherle Andrea , Bocus Paolo , Tessari Roberto , Zuppini Teresa , Ravasio Roberto
Published: November 2017

BACKGROUND: Inflammatory bowel disease (IBD) represents a group of chronic conditions characterized by elevated costs. Over the last years, also a considerable healthcare burden associated with IBD has emerged, due to an increasing use of biological drugs and hospitalization costs. Despite the creation of local or regional databases, data regarding healthcare expenditure are lacking in Italy.AIM: To evaluate the treatment cost (biological drugs and hospitalizations) for patients with ulcerative colitis (UC) or Crohn’s disease (CD) treated with biological drugs.METHODS: Disease severity was evaluated by clinical scores (partial Mayo score and Harvey Bradshaw Index). We analyzed retrospectively patients treated with biologics referred to our IBD Unit between May 2015-April 2016 who underwent at least six months of follow-up (last visit October 2016). We calculated a mean cost per month of treatment for each patient. We also investigated the presence of any correlation between the monthly cost of treatment and demographic or clinical variables.RESULTS: We enrolled 142 patients (52 UC, mean age 44.3 years, male 40.4%; 90 CD, mean age 38.8 years, male 56.7%). About half of CD patients (48.9%) underwent previous intestinal surgery. The disease severity was higher in UC group vs CD group. In UC group infliximab was the most prescribed biologic (51.9%), followed by golimumab (26.9%) and adalimumab (21.2%). While CD patients were treated with adalimumab in 54.4% and infliximab in 45.6%. The mean monthly cost of treatment was € 1,235.41 ± 358.38 for UC and € 1,148.92 ± 337.36 for CD (p = 0.16). In both groups expenditure due to biologics amounts for more than 80%. We found a correlation between costs and disease activity (UC: p < 0.01; CD: p < 0.01).CONCLUSION: The main cost is due to biological drugs, but patients enrolled were the most severe in comparison to the whole IBD population under conventional therapy. As no cost differences were found between biologic drugs and the way of administration (intravenous or subcutaneous), the therapeutic choice should be driven by clinical reasons and not only economic ones.
Neuropathological and transcriptomic characteristics of the aged brain
Authors: Miller Jeremy A , Guillozet-Bongaarts Angela , Gibbons Laura E , Postupna Nadia , Renz Anne , Beller Allison E , Sunkin Susan M , Ng Lydia , Rose Shannon E , Smith Kimberly A , Szafer Aaron , Barber Chris , Bertagnolli Darren , Bickley Kristopher , Brouner Krissy , Caldejon Shiella , Chapin Mike , Chua Mindy L , Coleman Natalie M , Cudaback Eiron , Cuhaciyan Christine , Dalley Rachel A , Dee Nick , Desta Tsega , Dolbeare Tim A , Dotson Nadezhda I , Fisher Michael , Gaudreault Nathalie , Gee Garrett , Gilbert Terri L , Goldy Jeff , Griffin Fiona , Habel Caroline , Haradon Zeb , Hejazinia Nika , Hellstern Leanne L , Horvath Steve , Howard Kim , Howard Robert , Johal Justin , Jorstad Nikolas L , Josephsen Samuel R , Kuan Chihchau L , Lai Florence , Lee Eric , Lee Felix , Lemon Tracy , Li Xianwu , Marshall Desiree A , Melchor Jose , Mukherjee Shubhabrata , Nyhus Julie , Pendergraft Julie , Potekhina Lydia , Rha Elizabeth Y , Rice Samantha , Rosen David , Sapru Abharika , Schantz Aimee , Shen Elaine , Sherfield Emily , Shi Shu , Sodt Andy J , Thatra Nivretta , Tieu Michael , Wilson Angela M , Montine Thomas J , Larson Eric B , Bernard Amy , Crane Paul K , Ellenbogen Richard G , Keene C Dirk , Lein Ed
Published: November 2017

As more people live longer, age-related neurodegenerative diseases are an increasingly important societal health issue. Treatments targeting specific pathologies such as amyloid beta in Alzheimer’s disease (AD) have not led to effective treatments, and there is increasing evidence of a disconnect between traditional pathology and cognitive abilities with advancing age, indicative of individual variation in resilience to pathology. Here, we generated a comprehensive neuropathological, molecular, and transcriptomic characterization of hippocampus and two regions cortex in 107 aged donors (median = 90) from the Adult Changes in Thought (ACT) study as a freely-available resource (http://aging.brain-map.org/). We confirm established associations between AD pathology and dementia, albeit with increased, presumably aging-related variability, and identify sets of co-expressed genes correlated with pathological tau and inflammation markers. Finally, we demonstrate a relationship between dementia and RNA quality, and find common gene signatures, highlighting the importance of properly controlling for RNA quality when studying dementia.
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora
Authors: Castro-Longoria R , Grijalva-Chon JM
Published: November 2017

Monthly (May 1987 to July 1988) samples were taken in triplicate of surface water at eight stations in the coastal lagoon La Cruz, Sonora, in order to determine the concentrations of nitrates, nitrites, phosphates and seston. In addition, surface salinity and temperature work measured at these stations. The temperature showed a marked seasonal trend with values between 32ºC (September) and 16ºC (January). The monthly salinity fluctuated between values of 3.5 and 40‰ The mean monthly concentration of phosphates had values of 0.21 to 3.6 µM. The nitrates had values of 0.42 to 3.8 PM, whereas the nitrites had concentrations from undetectable values to 0.38 µM. The total, inorganic and organic seston had minimum values of 10.2, 7.0 and 3.0 g/m3 and maximum values of 62.0, 35.2 and 6.9 g/n3, respectively. Temporally, the maxima and minima of the variables only partially coincided. The spatial distribution of the concentrations of each variable showed homogeneity on several occasions and, during the months when this did not occur, there was no defined pattern. The strong tidal exchange could be responsible for the high variability of the system.
Annual variation of phytoplankton productivity in Estero de Punta Banda, B.C.
Authors: Muñoz-Anderson MA , Millán-Núñez R
Published: November 2017

Eleven time series were carried out at one station in Estero de Punta Banda, from June 1987 to May 1988. The samples were taken during the day at spring and neap tides and the following variables were analysed: temperature, salinity, concentration of phosphates, nitrates, silicates and chlorophyll a. Two primary productivity experiments were conducted with the carbon-fourteen method for each sampling. The maximum temperature, 22.16ºC, occurred in summer and the minimum, 16.33ºC, in winter. Both the amplitude of variation and the chlorophyll a concentration were higher in summer. The average of the concentration of nitrates and phosphates of each sampling was very similar throughout the year, except in January due to a storm that caused mixing and homogenization in the water column of the bay, causing the concentration to increase during the flow of the tidal current in the Estero. Primary productivity was higher during the summer months, reaching values of up to 68.32 mgC/ms/h, and lower in autumn and winter with values of 3.57 mgC/m3/h. High assimilation ratio values are reported during neap tides.
Mechanisms of nuclear pore complex assembly – two different ways of building one molecular machine
Authors: Otsuka Shotaro , Ellenberg Jan
Published: November 2017

The nuclear pore complex (NPC) mediates all macromolecular transport across the nuclear envelope. In higher eukaryotes that have an open mitosis, NPCs assemble at two points in the cell cycle: during nuclear assembly in late mitosis and during nuclear growth in interphase. How the NPC, the largest nonpolymeric protein complex in eukaryotic cells, self‐assembles inside cells remained unclear. Recent studies have started to uncover the assembly process, and evidence has been accumulating that postmitotic and interphase NPC assembly use fundamentally different mechanisms; the duration, structural intermediates, and regulation by molecular players are different and different types of membrane deformation are involved. In this Review, we summarize the current understanding of these two modes of NPC assembly and discuss the structural and regulatory steps that might drive the assembly processes. We furthermore integrate understanding of NPC assembly with the mechanisms for rapid nuclear growth in embryos and, finally, speculate on the evolutionary origin of the NPC implied by the presence of two distinct assembly mechanisms.
Mechanisms of radial glia progenitor cell lineage progression
Authors: Beattie Robert , Hippenmeyer Simon
Published: November 2017

The mammalian cerebral cortex is responsible for higher cognitive functions such as perception, consciousness, and acquiring and processing information. The neocortex is organized into six distinct laminae, each composed of a rich diversity of cell types which assemble into highly complex cortical circuits. Radial glia progenitors (RGPs) are responsible for producing all neocortical neurons and certain glia lineages. Here, we discuss recent discoveries emerging from clonal lineage analysis at the single RGP cell level that provide us with an inaugural quantitative framework of RGP lineage progression. We further discuss the importance of the relative contribution of intrinsic gene functions and non‐cell‐autonomous or community effects in regulating RGP proliferation behavior and lineage progression.