bluuebunny/crossref_metadata_2025_split huggingface dataset:
A DIALOGICIDADE E OS LETRAMENTOS ACADÊMICOS
Authors: BUTTURI JUNIOR ATILIO 
Published: April 2018

O presente trabalho parte das discussões sobre as esferas sócio-discursivas e sobre os letramentos acadêmicos e tem como objetivo apresentar uma discussão que relacione o princípio dialógico bakhtiniano e as práticas de letramento no Ensino Superior. Inicialmente, conceitua-se "dialogismo" como mecanismo enunciativo geral da linguagem. Logo em seguida, descreve-se a esfera acadêmica como esfera institucional e produzida segundo gêneros secundários que tendem à estabilização e oferecem modos de autoria, de composição textual e que carregam "refrações" ideológicas específicas. Finalmente, traça-se a necessidade de se pensar o papel da dialogia nas práticas de leitura e escrita, visto que muitas vezes, no Ensino Superior, a autoria, as identidades e a apropriação dos encunciados são interditados, ora pela dificuldade de apropriação da cultura escrita por parte dos alunos/acadêmicos, ora pelas características da esfera sócio-discursiva, marcada pelos efeitos de objetividade e de apagamento dos sujeitos. Conclui-se, a partir dos debates, que é preciso forjar modelos de ensino e aprendizagem que levem em conta que a esfera acadêmica é espaço de produção de identidades e de circulação de poder, sendo necessário aderir à postura de "agente de letramento" para a construção de letramentos "polifônicos".
Reflexões sobre o desafio das novas tecnologias na escola básica
Authors: Silva Sandro Luis da 
Published: April 2018

O tema educação e novas tecnologias tem despertado cada vez mais o olhar dos estudiosos. Neste artigo, propomos uma reflexão sobre o uso das novas tecnologias no processo de ensino-aprendizagem de língua portuguesa, considerando a formação docente e a prática pedagógica do professor em sala de aula. Para atingir esse objetivo, trazemos isso, algumas considerações sobre um estudo qualitativo (ainda em desenvolvimento) com professores da escola pública de uma cidade da grande São Paulo. Para as reflexões aqui apresentadas, pautamo-nos em Pinheiro (2007), Marcuschi (2004), Harvey (1992) e Goergen (2005), Moran (2012), Silva (2012) e Freitas (2009) em relação às novas tecnologias. Quanto à leitura, buscamos apoio em Marcuschi (2005 e 2012) e em Lajolo (1993). Constatou-se que ainda há certa resistência dos professores em inserir novas estratégias de ensino valendo-se dos recursos oferecidos pelas novas tecnologias por falta de uma formação adequada, seja inicial, seja continuada, embora elas já comecem a fazer parte do cotidiano escolar.
A VARIAÇÃO DAS CONSTRUÇÕES DE CLIVAGEM NO ESPANHOL ATUAL
Authors: Pinto Carlos Felipe da Conceição 
Published: April 2018

RESUMO: Este trabalho faz uma apresentação da variação das construções de clivagem no espanhol atual a partir da análise de dados coletados em corpus de quatro variedades (Argentina, Cuba, Espanha e México). Dentre as quatro variedades estudadas, foi constatado que o espanhol cubano é a variedade que apresenta mais tipos de construções de clivagem e o espanhol europeu é a variedade que apresenta menos tipos. Na segunda parte do trabalho, é feita uma análise formal para as construções de clivagem estudadas e, por fim, é proposta uma análise formal para a variação da clivagem no espanhol com base na variação dos traços formais do núcleo Cº. PALAVRAS-CHAVE: Língua Espanhola; Variação em sintaxe; Focalização; Clivagem.
ORALIDADE POÉTICA E ENSINO DE LITERATURA: DIFICULDADES CONCEITUAIS, METODOLÓGICAS E PRÁTICAS QUE ENVOLVEM AS POÉTICAS ORAIS
Authors: Helena Braz Helena 
Published: April 2018

Resumo: Neste estudo, realizamos reflexões acerca das poéticas orais e sua performance no espaço formal de educação e cultura. Objetivamos descrever, analisar e fundamentar os procedimentos teóricos e práticos aplicados ao trabalho com a poesia oral, e ainda, verificar algumas de suas contribuições na formação leitora do indivíduo. Nesse intuito, levantamos inicialmente a problemática conceitual e prática dos pesquisadores e profissionais que trabalham com a oralidade. Recorremos às concepções teóricas de estudiosos como: Zumthor (2007), Ferreira (2010), Fares (2010), Feitosa (2008), Todorov (2009) dentre outros. Apresentamos também os resultados de uma pesquisa realizada em 2011, com um grupo de professores de Uberlândia - MG, atuantes na área de Língua Portuguesa, sobre o ensino de Literatura na rede pública. Por meio desta pesquisa e dos estudos realizados pudemos constatar que esse ensino ocorre, muitas vezes, de forma ineficiente. Apesar dessa constatação, concluímos que metodologias voltadas para a oralidade poética e sua performance, quando utilizadas de forma sistemática e adequada, contribuem significativamente no processo de formação de leitura do aluno. Portanto, as poéticas orais em performance poderiam ser mais valorizadas, e de fato utilizadas no contexto escolar. Palavras-chave: oralidade poética; ensino; literatura; metodologia; dificuldades.
Fantasia e ciência na Amazônia: O mundo perdido, de Arthur Conan Doyle
Authors: Da Silva Roberto José 
Published: April 2018

FANTASIA E CIÊNCIA NA AMAZÔNIA: O MUNDO PERDIDO, DE ARTHUR CONAN DOYLE Resumo Em 1912 Arthur Conan Doyle publicou O mundo perdido, ingressando na ficção científica, a partir das pesquisas científicas realizadas pelos naturalistas, biólogos e zoólogos europeus que estiveram na Amazônia no século XIX. Nessa nova produção introduziu o Professor Challenger que se tornou personagem ícone de uma série de romances de ficção científicas que viriam a ser publicados a partir dessa obra. Maple White foi o nome dado à terra encontrada num platô na bacia Amazônica, onde habitavam seres pré-históricos e Arthur Conan Doyle recorreu como pressuposto para expor e discutir teorias científicas vigentes naquele momento como, por exemplo, a origem das espécies, de Charles Darwin. Desse modo, o objetivo desse trabalho é fazer um exame de O mundo Perdido à luz das descobertas científicas daquele momento, assim como estudar as relações entre ciência e ficção, tendo a Amazônia com cenário desse romance. Palavras-chave: Arthur Conan Doyle; ficção científica; Amazônia; literatura fantástica. FANTAZY AND SCIENCE IN THE AMAZON: THE LOST WORLD, BY ARTHUR CONAN DOYLE Keywords In 1912 Arthur Conan Doyle published The Lost World, joining in the science fiction, from the scientific research conducted by Europeans naturalists, biologists and zoologists who went to Amazon in the nineteenth century. In this new novel Arthur Conan Doyle introduced Professor Challenger who became icon character of a series of scientific fiction novels that will be published from this work. Maple White was the name given to the land found on a plateau in the Amazon basin, where lived prehistoric beings and Arthur Conan Doyle appealed for granted to expose and discuss current scientific theories at that time, for example, the Origin of Species by Charles Darwin. Thus, the aim of this study is to make an examination of The Lost World under the light of scientific findings that moment, and to study the relationship between science and fiction, been Amazon as scenary of this novel. Keywords: Arthur Conan Doyle; science fiction; Amazon; fantasy literature.
PERMAINAN POLYDRON DALAM PROSES PEMBELAJARAN MATEMATIKA DI SEKOLAH DASAR
Authors: Yuliati Siti Rohmi , Siregar Rosinar , Sari Rina Permata 
Published: April 2018

The purpose of this research is to increase the learning process of Mathematic on second grade by using Polydron Game. The result shows the signs of: (1) Students’s Behaviour Change on Mathematic learning process, (2) Students’s Result of the learning process was not familiar with the game method for the learning, (3) Teachers’s creativity implementation using Polydron game method has been appropriate and on satisfying level. Based on the results, it can be concluded that students are excited with Polydron game as geometry learning method, but the conventional method must be kept so that the students’ learning result will be better.
Abstrak
Tujuan dari penelitian ini adalah untuk meningkatkan proses belajar Matematika pada kelas II dengan menggunakan permainan Polydron. Hasil penelitian menunjukkan hal sebagai berikut: (1) Perubahan Perilaku Siswa pada proses pembelajaran Matematika,(2) Hasil proses belajar menunjukkan bahwa dalam pembelajaran siswa tidak akrab dengan metode game, (3) kreativitas Guru menggunakan metode Polydron permainan telah sesuai dan memuaskan. Berdasarkan hasil tersebut, dapat disimpulkan bahwa siswa sangat antusias dengan permainan Polydron pada metode pembelajaran geometri. Tetapi metode konvensional tetap harus dijaga sehingga hasil belajar siswa akan menjadi lebih baik.
Use of Drones for Oilfield Equipment Inventory
Authors: Freed T. , Medizade M. M. , Duong A. 
Published: April 2018

Abstract
Oilfield tubulars (typically metallic pipes) and other types of oilfield equipment are typically stored in outdoor areas and may be scattered around the field. Managing these types of inventory is challenging and costly, as it requires significant labor resources. Therefore, inventory inaccuracy is common, and data-driven decisions may not be possible in a timely manner.
We propose the use of radio frequency identification (RFID) for tracking oilfield tubulars and similar, outdoor-stored, equipment. Our proposed application utilizes passive ultra-high frequency (UHF) RFID technology that enables capturing unique serial identification numbers that are attached to inventory items from a distance of several meters.
Passive UHF RFID tags require no batteries to operate. Typical tag cost is low. Each tag is placed on an inventory item and corresponds to a database entry containing specific information about this item. The tag communicates its serial number using power provided by an RFID reader radio transmission. The RFID reader is securely mounted to the underside of a UAV flown over the field. Captured RFID tags are either stored locally and retrieved once the UAV lands, or are wirelessly transmitted to a constantly updating inventory database. In addition to tag ID, the captured data typically includes time and date stamp, as well as location data.
This research project included the design and manufacturing of an enclosure to house a RFID reader system which includes a host computer, embedded reader, antenna, power source, and necessary components for user interface. Specialized mounts were designed and manufactured to attach the enclosure and antenna to the UAV. The project incorporated the development of "middleware", specialized software installed on the host computer to communicate with the reader. The reader handles low-level communication with the antenna. To reduce network traffic, event management and data filtering are efficiently performed.
The results of several UAV flights in experimental areas are presented and discussed. Various brands of passive RFID tags for oilfield applications were tested. Particular attention was given to population density of the items, stacking configuration, vertical altitude distance between reader and tags, and time to collect inventory data for a given area of surveillance. As RFID applications are increasing in the oil, gas, solar, and other sectors of the energy production industries, UAVs can effectively be used to get important operational and inventory data. UAV use is particularly appealing in inaccessible and remote locations.
Principle Component Analysis Methods for Covariance Localization in the Ensemble Kalman Filter History Matching
Authors: Jiang Junzhe , Gorell Sheldon 
Published: April 2018

Abstract
History matching is a widely used reservoir simulation workflow. Its goal is to create models which reasonably match historical field injection and production data so future predictions can be made. Many methods have been developed in the past to try to solve this problem. One set of methods that have been those that involve ensemble data assimilation. An example is the Ensemble Kalman Filter (EnKF), which has been widely implemented. A key issue with ensemble methods is that Under sampling can severely degrade the reliability of the estimation. In this paper we introduce a new method to improve the result quality in ensemble data assimilation methods.
Investigation of Modified Water Chemistry for Improved Oil Recovery: Application of DLVO Theory and Surface Complexation Model
Authors: Sanaei Alireza , Tavassoli Shayan , Sepehrnoori Kamy 
Published: April 2018

Abstract
It is widely accepted that oil recovery during waterflooding can be improved by modifying the composition of the injected brine. A typical approach is diluting the formation water to a specific lower salinity. However, recent experimental studies report the adverse effect of formation water dilution on oil recovery for specific oil/brine/rock systems. The adverse effect depends on the interactions within the system and is more pronounced in carbonates. In this study, we investigated the effect of water composition on the performance of low salinity water injection by considering the complex interplay interaction of oil, brine, and rock system.
We used a coupled in-house compositional simulator and geochemical (IPhreeqc) framework for this study. Using this simulator we were able to capture true physics of the modified salinity waterflooding process. First, employing PHREEQC, we developed a surface complexation model for oil and rock surfaces to calculate the zeta-potential at these two surfaces. Second, we considered a water film between oil and rock and used DLVO theory to calculate the attractive/repulsive forces between oil and rock surfaces. Furthermore, we used the augmented Young-Laplace equation to calculate the resulting contact angle of the system. Then, we defined an interpolating parameter as a function of the calculated contact angle to predict wettability alteration. Finally, the geochemistry model was implemented in UTCOMP-IPhreeqc to investigate the effect of modified salinity water injection on wettability alteration and enhanced oil recovery. In order to validate our approach, the results of our simulations were compared with a recently published coreflood experiment.
Our results show that in carbonates, the charge of the oil/brine and rock/brine surfaces is a determining factor for the success of modified salinity waterflooding. Our contact angle calculations using DLVO theory and the augmented Young-Laplace equation accurately estimated the dynamic trend of contact angle during low salinity flood. Moreover, our zeta potential calculations based on surface complexation model reproduced the experimental data of oil/brine and brine/calcite zeta potential measurements. Modeling wettability alteration as a function of contact angle was sufficient to predict the low salinity effect in carbonates. Similar approach can be used to model low salinity effect in sandstones. We believe this is the first study that a comprehensive compositional reactive transport simulator is used to assess modified salinity waterflooding as a function of contact angle, employing DLVO theory and surface complexation model.
Improving Diversion Efficiency in Re-Fracturing by Using Engineered Solid Particulate Diverters
Authors: Huang J. , Safari R. , Fragachán F. E. , Smith C. 
Published: April 2018

Abstract
Currently, solid particulate diverters are frequently used for fluid stimulations, including fracturing, refracturing and acidizing. To ensure the success of a diversion operation, the most common strategy is to increase the amount of solid particles used in each stage to achieve diversion; however, this could lead to the excessive job costs, longer clean-up times and even, in extreme cases wellbore blockage. The success of these diversion treatments is truly dictated by the mechanical characteristics and wellbore displacement of the pumped solid diverters. A full understanding of the underlying mechanism of jamming and plugging can aid in the design and pumping of the particulate diverters efficiently. In this study, an integrated analysis is performed prior to a planned re-frac treatment to assess and improve the diverter application design.
Using the experimental data, an integrated analysis was conducted to quantify the influence of solid particle design on the jamming and plugging process and hence the diversion efficiency. Both a CFDDEM model and a 3D fracture simulator were used to model particle transport and the diversion process prior to a re-fracturing operation. The overall conductive reservoir volume and associated production was predicted to compare and contrast the fluid diversion efficiency between different design plans, as engineered vs. non-engineered solid particulate diverters.
From our analysis, engineered solid particulate diverters can seal the openings and build-up enough pressure to redirect fracturing fluid, as suggested from both the experiments and the numerical simulations. Non-engineered solid particles could fail in blocking the opening or cannot build sufficient pressure required for effective diversion. In this case study, by using the fit-for-purpose particle design, including size, ratio and concentration, the engineered solid particle diverter can effectively plug the active perforations and redistribute the fracturing fluid into non-active perforations to create additional fractures to boost production.
According to our case study, the particle design can be engineered properly to enhance the diversion efficiency and also optimize the usage of diverters. The presented design workflow and analysis will better enable us to design and customize solid particles for efficient fluid diversion.
Proppant Shape Effect on Dynamic Conductivity of a Fracture Filled with Proppant
Authors: Mollanouri-Shamsi M. M. , Aminzadeh F. , Jessen K. 
Published: April 2018

Abstract
Many studies showed that the particle shape has a significant effect on mechanical properties of sands. We are investigating the effect of proppant angularity on the dynamic conductivity of a fracture filled with proppant by simulating the irregularly shaped proppant. Our previous publication showed the important effect of grain size distribution. We showed numerically with the combination of Discrete Element Method (DEM) and Lattice Boltzmann Method (LBM) that well--graded proppant--pack can keep the fracture open for longer time. Following the previous study, we are focusing on the proppant shape effect on the conductivity of a well-graded proppant--pack. By applying sphere clumping method in DEM, we generated the semi-real shape of sand. Four groups of grains with different angularities, including high angular, medium angular, rounded grains, and spherical particles are generated randomly and packed uniformly. By applying the real condition of fracture on each proppant--pack numerically with DEM, we simulated the physics behind the fracture closing and monitored the width of the proppant--pack/fracture dynamically. Simultaneously, we calculated permeability of each proppant--pack by LBM to be able to evaluate the dynamic conductivity of each proppant--pack. Our results showed the effect of angularity on the stability of the proppant--pack. Angular proppant could keep the fracture open for the much longer time in comparison with spherical or rounded proppant grains. Furthermore, it showed that angularity can affect the permeability of the proppant--pack and well graded angular proppant--pack has lower permeability and spherical proppant-pack has the higher permeability. We reached this conclusion that there is a level in angularity of proppant that we have the most efficient pack of proppant for higher conductivity. The proposed workflow provides an effective approach for analyzing production dynamics related to variable proppant conductivity and provides a path for optimizing the proppant size distribution and shape based on expected variations in the stress field.
Design and Development of Data-Driven Screening Tools for Enhanced Oil Recovery Processes
Authors: Yalgin G. , Zarepakzad N. , Artun E. , Durgut I. , Kok M. V. 
Published: April 2018

Abstract
Computationally efficient screening and forecasting tools can offer faster decision-making and value- creation opportunities for enhanced oil recovery (EOR) operations without requiring a high-fidelity reservoir model. In this paper, we present a data-driven modeling approach utilizing numerical models and neural networks (ANN) to screen EOR methods in a rapid way. Numerical modeling is employed to generate the data for the training of the neural-network based data-driven model. It is aimed to develop comprehensive and globally applicable screening tools that can be used to identify reservoirs where the EOR method would be applicable through estimation of performance indicators, such as utilization efficiency. Important process variables related to the EOR method are identified and grouped, while also defining their limits and statistical distributions. A large number of scenarios are generated and run using the numerical model that represents the EOR method under consideration. A simple yet representative performance indicator is defined and calculated for each scenario, which takes into account both additional income due to incremental oil recovery and the cost of the injected agent. Considering annual volumes in the calculation and evaluating the time-dependency of the performance indicator allow to incorporate time-value of the money. Finally, the knowledge base is used to train a neural network that can capture the signatures within the dataset through an iterative training process. This methodology is explained by highlighting important components of the workflow as well as best practices of each step. Results of two example applications are summarized: 1) Cyclic steam injection, 2) Polymer flooding. The results indicated that presented methodology can be successfully followed for different EOR methods. In both cases, the data-driven screening model was able to predict the efficiency indicator within acceptable accuracy levels and identified the degree of success of each method under different reservoir and operational conditions. Comparison of sensitivities between numerical and data-driven models showed that the data-driven model captured the physics of both problems as reflected by the numerical model. Predicting the indicator at 2-year intervals allowed to estimate the feasibility as a function of time.
Effect of Well Configuration and Flow Rate on Geomechanical Stability of a Fault during Recovery of Fault-Banked Oil
Authors: Asaithambi Renuhaa , Jha Birendra 
Published: April 2018

Abstract
Recovery of bypassed oil banked against non-conductive faults in heavily-faulted and stress-sensitive reservoirs such as the Wilmington and Kern River fields of California can raise concerns of fault destabilization. Here, we investigate the effects of well configuration and well flow rate on the changes in stress and mechanical stability of a fault during recovery of fault-banked oil. We use a computational framework of coupled flow, geomechanics and Coulomb failure to quantify the evolution of fault stresses for different configurations and flow rates of two wells located across the fault. In the case of two producers across the fault, we find that the fault stability is determined by the difference in flow rates of the two producers. A smaller difference in well rates result into a smaller difference in pressure across the fault, which leads to a smaller rate of destabilization. In case of an injector-producer pair placed across the fault, a smaller difference in the flow rates results into a larger destabilization of the fault. We conclude that the inevitability of producing or injecting close to a fault requires detailed geomechanical studies to evaluate the effects of existing and planned well locations and well rates on fault stability. Using our coupled simulation framework, we show that both well configuration and rates play important roles in determining the stability of a fault. Results from this study can be incorporated into geomechanical hazard analysis of fault-banked oil operations around California.