bluuebunny/crossref_metadata_2025 huggingface dataset:
Tutoria e Tutor em Educação a Distância: Retratos do Presente versus Visões para o Futuro
Authors: Do Nascimento Lauriza Quina Barreto , Leal Maria João , Spilker Maria João , Morgado Lina
Published: October 2015

Este trabalho apresenta um estudo de caso em fase preliminar. Parte-se da hipótese de que a tutoria em Educação a Distância e e-Learning, no Ensino Superior, é baseada em modelos pedagógicos e organizacionais e leva a práticas diferenciadas, as quais exigem habilidades e competências específicas do e-Tutor (Tutor em cursos on-line). Apresenta-se a abordagem temática e pedagógica de um curso destinado a professores, tutores e formadores. Para recolha de dados sobre o grau de satisfação com o curso e a percepção dos formandos sobre o sucesso da aprendizagem, foi aplicado um questionário e realizada uma análise dos mapas conceituais digitais criados pelos participantes do curso. A pesquisa tem como objetivo contribuir para o debate sobre modelos e práticas atuais e futuras de tutoria em educação a distância e para a melhoria das futuras edições do curso. Os resultados indicam que o curso (objetivos, metodologia e currículo) corresponde, em grande parte, às expectativas dos participantes e exigências acadêmicas. Conclui-se que é importante aprofundar o conhecimento na área de modelos de tutoria e práticas, bem como, o papel e as funções a desempenhar pelos professores, atores que enfrentam desafios colocados pelas tecnologias emergentes e pedagogias contemporâneas.Palavras-chave: Modelos de tutoria; Educação a distância; e-Learning; Universidades abertas.?Tutoring and Tutor in Distance Education: Portraits of the Present versus Visions for the FutureAbstract This paper presents a case study in its preliminary stage. It relies on the hypothesis that tutoring at a Distance and e-Learning, in higher education, is based on pedagogical and organizational models and leads to several different practices, requiring specific skills from the Tutor. A course is presented which is aimed at teachers, tutors and trainers . The research used a questionnaire to collect data about the level of satisfaction with the course and the perception of students about the learning success, as well as an analysis digital conceptual maps created by the participants. The research aims to contribute to the debate on current and future models and practices in distance education tutoring and to the improvement of future editions of the course. The results indicate that the course (objectives, methodology and curriculum) largely meets the expectations of the participants and academic requirements. It is important to deepen the knowledge in the field of tutoring models and practices, as well as the role and functions to perform by tutors--actors who face challenges set by emerging technologies and pedagogies.Keywords: Tutoring models; Distance education; e-Learning; Open universities.
A Política da Participação Colaborativa com o Uso das Tecnologias Móveis em EAD
Authors: Bastos Josie do Amaral
Published: October 2015

A ascensão do uso dos dispositivos móveis como tablets, smarthphones, netbooks e celulares vem gerando uma transformação na forma de comunicação entre os sujeitos, inseridos neste cenário colaborativo e de aumento da troca de arquivos. O presente artigo é fruto de um projeto de pesquisa que vem se desenvolvendo no Núcleo de Educação a Distância da UFMA (NEAD) por professores, pesquisadores do Núcleo de TV da Assessoria de Comunicação da UFMA e alunos do Departamento de Comunicação da mesma Instituição. O intuito é mostrar a experiência realizada no Núcleo de Produção e Tecnologia Educacional (NPTE) do Instituto Federal de Educação, Ciência e Tecnologia Sul-rio-grandense (IFSUL) para contribuir com uma reflexão sobre o uso adequado do tamanho, das cores e dos contrastes de legendas em materiais audiovisuais direcionados à educação e realizados por alunos e professores do EAD.Palavras-chave: Comunicação, Tecnologias móveis, Educação a distância. The Policy of Collaborative Participation with the Use of Mobile Technologies in Distance EducationAbstract The rise in the use of mobile devices such as tablets, smartphones, netbooks, and mobile phones has generated a transformation of communication between subjects entered into this collaborative scenario and increases the exchange of files. This article is the result of a research project that has been developed at the Center for Distance Education UFMA (NEAD) by teachers, researchers of the Center's TV Communication Advisory UFMA, and students of the Department of Communication at the same institution. The aim is to show the experiment conducted at the Center for Educational Technology and Production (NPTE) of the Federal Institute of Education, Science, and Technology of Rio Grande do Sul (IFSUL) and to contribute to a reflection on the proper use of the size and color contrasts of subtitles in audiovisual materials in education and performed by students and teachers of EAD.Keywords: Communication, Mobile technologies, Distance education.
Projeto E-book Cederj: Proposta, Metodologia de Execução E Análise Inicial de Resultados
Authors: Perdigão Luciana Tavares , Mantilla Samira Pirola Santos , Salvador Daniel Fábio
Published: October 2015

O Projeto E-book Cederj foi desenvolvido na Fundação Cecierj e consiste num sistema dinâmico que transforma os cadernos didáticos impressos em livros digitais que podem ser enriquecidos de recursos multimídia e atividades na plataforma Moodle sugeridos pelos professores dos cursos de graduação. O objetivo da pesquisa foi apresentar e analisar o processo de criação do E-book, bem como o volume de recursos multimídia utilizados na fase piloto do Projeto para os diversos cursos de graduação a distância do Consórcio Cederj. As categorias de recursos multimídia utilizadas no Projeto foram: animação, atividade, arquivo, áudio, fórum, imagem, site, texto e vídeo. Observa-se que houve um aumento de 65% de recursos adicionados do mês de setembro até o mês de novembro. Os recursos mais utilizados nos E-books foram a animação (37%), seguida pelo site (22%) e pelo vídeo (19%). O Projeto tem encontrado forte adesão dos coordenadores de disciplina do Consórcio Cederj bem como expande possibilidades para integração didática de diferentes mídias e plataformas sempre mantendo a autonomia do professor. Palavras-chave: E-Book; Multimídia; Livros didáticos; Animações.E-book Cederj Project: Proposal, Implementation Methodology and Initial Analysis of ResultsAbstractThe E-book Cederj Project was developed by a team of experts from the Department of Digital Media at Cecierj Foundation and consists of a dynamic system that transforms the didactic books into digital books and can be improved with multimedia features and Moodle activities which are suggested by teachers from each degree course. The research objective was to present the process of e-book creation and analyze the amount available multimedia resources in E-books for undergraduate courses e-learning at the Cederj Consortium. The types of multimedia resources are: animation, file, activity, audio, forum, picture, website, text, and video. We note that there was an 65% increase of features added in the month of September to November. The resources most commonly used in E-books were animation with 37%, followed by site (22%) and video (19%). The project has support from the Cederj discipline coordinators, and it is expanding opportunities for didactic integration of different media and platforms, while maintaining the autonomy of the teacher.Keywords: E-Book; Multimedia; Didactics books; Animations.
Mudança de Cultura no Uso de Tecnologias Educacionais: Estudo de Caso no Modelo Semipresencial do Cederj
Authors: Salvador Daniel Fábio , Rolando Luiz Gustavo Ribeiro , E Almeida Clarisse de Mendonça , De Mello Judith Almeida
Published: October 2015

O presente trabalho se propõe a descrever o processo de implementação de uma nova cultura de uso do ambiente virtual de aprendizagem, iniciado em 2012, junto aos cursos de graduação do Consórcio Cederj, ofertados no modelo semipresencial, e, posteriormente, sua difusão pelas diversas disciplinas. Com o objetivo principal de se aprimorar os processos de ensino-aprendizagem a distância, foram instituídas, além da implementação de uma nova plataforma, ações de capacitação destinadas aos diversos atores envolvidos no processo e iniciativas de apoio ao atendimento ao aluno e ao professor no que se refere à edição e ao uso de salas de aula virtuais. Dados coletados e apresentados ao longo do presente trabalho trazem reflexões relevantes acerca da utilização da plataforma de cursos on-line, em larga escala, baseada em uma abordagem construtivista e de acordo com os princípios atuais do design instrucional contextualizado e de estímulo à autoria do professor.Palavras-chave: Educação a distância; Web 2.0; Sistema de gestão da aprendizagem.Culture Change in the Use of Educational Technology: a Case Study in Cederj Blended ModelAbstractThis paper aims to describe the implementation process of a new culture on using a virtual learning environment, which started in 2012, in undergraduate courses offered by Consórcio Cederj in a blended learning model, and, later, to discuss the propagation of this culture for all courses. With the objective of improving the distance teaching and learning process, a new learning platform was implemented. In addition training programs were instituted for the actors involved in the process and support initiatives to student and teacher in order to help them editing and using the virtual classrooms. Collected and presented data present in this work brings relevant ideas about the use of learning platform to offer online courses, in a large-scale, based on a constructivist approach and according to current principles of contextualized instructional design and of stimulus to the professors authorship.Key words: Distance education; Web 2.0; Learning management system.
Vzdělávání ekonomů s evropskou dimenzí
Authors: Durčáková Jaroslava
Published: October 2015

N/A
Modelování měnových kurzů
Authors: Kubálek Jiří
Published: October 2015

N/A
Mezinárodní řízení lidských zdrojů: faktory konvergence a divergence
Authors: Branine Mohamed , Dvořáková Zuzana
Published: October 2015

N/A
Ekonometrická analýza produkčních funkcí
Authors: Hušek Roman
Published: October 2015

N/A
Nositel nobelovy ceny za ekonomii za rok 1999
Authors: Jonáš Jiří
Published: October 2015

N/A
O nových přístupech ve statistice
Authors: Hronová Stanislava , Jarošová Eva
Published: October 2015

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Česká společnost ekonomická: chování spotřeby a přímé zahraniční investice (informace z 11. a 13. semináře). Praha, květen a září 1999.
Authors: Čihák Martin
Published: October 2015

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Ekonomie pro všechny a
Authors: Žák Milan
Published: October 2015

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Zpráva o činnosti České společnosti ekonomické od 18. listopadu 1997 do 30. listopadu 1999
Authors: Kysilka Pavel
Published: October 2015

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Modelování cenových očekávání a analýza jejich vlivu na trh
Authors: Hron Jiří
Published: October 2015

N/A
Komplexní pohled na hospodářskou politiku Japonska
Authors: Žák Milan
Published: October 2015

N/A
Postavenie Japonska v globalizačných procesoch vo svetovom hospodárstve
Authors: Baláž Peter
Published: October 2015

N/A
Co, kolik, kdy, kam a jak investovat
Authors: Ducheček František
Published: October 2015

N/A
Povinná studijní pomůcka pro podnikatele, ekonomy a manažery
Authors: Dědina Jiří
Published: October 2015

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Moderní přístupy a metody v řízení výroby
Authors: Jelínek Jiří
Published: October 2015

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Česká ekonomika v roce 2000: obrat v tempu růstu
Authors: Janáček Kamil , Čihák Martin , Frýdmanová Marie , Holub Tomáš , Zamrazilová Eva
Published: October 2015

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Prognóza vývoje české ekonomiky v letech 2000 a 2001
Authors: Křovák Jiří , Filáček Jan
Published: October 2015

N/A
Švédský kapitalismus s lidskou tváří
Authors: Kőrner Pavel
Published: October 2015

N/A
Národní hospodářství očima systému národního účetnictví
Authors: Spěváček Vojtěch
Published: October 2015

N/A
Nová učebnice hospodářské politiky
Authors: Soukup Petr
Published: October 2015

N/A
Nové směry řízení a organizování českých firem
Authors: Pichanič Mikuláš
Published: October 2015

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Zobecněný princip chování firmy v tržní ekonomice
Authors: Hlaváček Jiří
Published: October 2015

N/A
O jednom z možných scénářů reformy penzijního systému v České republice
Authors: Kubalčík Jan , Zbořil Radek
Published: October 2015

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Cílování inflace: teorie a praxe
Authors: Kvasnička Michal
Published: October 2015

N/A
Ekonomie: proč učit, co učit, jak učit
Authors: Helísek Mojmír , Breňová Lubomíra
Published: October 2015

N/A
Zdařilá publikace ze slovenské nabídky
Authors: Mandel Martin
Published: October 2015

N/A
Studium chování lidí v pracovních kolektivech
Authors: Dědina Jiří
Published: October 2015

N/A
Nejucelenější práce o marketingu
Authors: Boučková Jana
Published: October 2015

N/A
Chiméra autonomní měnové politiky v malé otevřené ekonomice
Authors: Janáčková Stanislava
Published: October 2015

N/A
Harmonizace obchodní politiky České republiky s obchodní politikou zemí Evropské unie
Authors: Vavrejnová Marie
Published: October 2015

N/A
John Maynard Keynes: válečné reparace a transferový problém
Authors: Pavelka Tomáš
Published: October 2015

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Příspěvěk k interkulturnímu porozumění
Authors: Dvořáková Zuzana
Published: October 2015

N/A
Uživatelské bleskové odhady krátkodobých změn hrubého domácího produktu České republiky
Authors: Jílek Jaroslav , Vojta Miloš
Published: October 2015

N/A
Vliv německé historické školy na české ekonomické myšlení
Authors: Loužek Marek
Published: October 2015

N/A
Agrární struktura v České republice - současný stav a předpoklady dalšího vývoje
Authors: Divila Emil
Published: October 2015

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O jednom z možných scénářů reformy penzijního systému v České republice (polemika)
Authors: Bezděk Vladimír
Published: October 2015

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Politická ekonomie Davida Ricarda II
Authors: Holman Robert
Published: October 2015

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Organizační a institucionální aspekty transformace ekonomiky ČR
Authors: Lašek Josef
Published: October 2015

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Ceny průmyslových výrobců a vývoj inflace v ČR
Authors: Holub Tomáš
Published: October 2015

N/A
Ekonomická teorie regulace a konkurence v energetických sítích
Authors: Dušek Libor
Published: October 2015

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Ekonomický růst v procesu transformace České republiky s ohledem na mezinárodní aspekty
Authors: Holub Alois
Published: October 2015

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Sociální transfery v období transformace a jejich účinky
Authors: Sirovátka Tomáš
Published: October 2015

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Konvergence a klíčové ekonomické proměnné: případ Slovinska
Authors: Strašek Sebastian
Published: October 2015

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N. D. Kondratěv - zakladatel moderních koncepcí dlouhých vln
Authors: Sirůček Pavel
Published: October 2015

N/A
Analýza a simulace variant hospodářské politiky
Authors: Hušek Roman
Published: October 2015

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Hospodářská politika a ekonomický růst
Authors: Rusek Antonín
Published: October 2015

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Modelování vyjednávacího procesu s více hodnotícími kritérii
Authors: Fiala Petr
Published: October 2015

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Modely reakce prodeje na reklamu
Authors: Mariel Petr
Published: October 2015

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N/A
Authors: Sláma Jiří
Published: October 2015

N/A
Trh práce v Japonsku
Authors: Janečková Michaela , Berger Roland
Published: October 2015

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Reklama v situaci dynamického duopolu
Authors: Paz Espinosa María , Mariel Petr
Published: October 2015

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Reakce rezidentů a nerezidentů na rozšíření fluktuačního pásma pro kurz české koruny
Authors: Jílek Josef , Jílková Jiřina
Published: October 2015

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Modelování poptávky českých domácností po finančních aktivech v období kuponové privatizace
Authors: Allen Chris , Šmídková Kateřina
Published: October 2015

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Bohatství národů Adama Smithe
Authors: Holman Robert
Published: October 2015

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Bohatství národů Adama Smithe II.
Authors: Holman Robert
Published: October 2015

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Inflace a mechanismus měnových kurzů
Authors: Kočenda Evžen
Published: October 2015

N/A
Evropská unie a transformační výzvy druhé poloviny 90. let
Authors: Jakš Jaroslav
Published: October 2015

N/A
Dynamický agregátní model
Authors: Stojanovič Dragiša
Published: October 2015

N/A
Segmentační tendence a procesy na trhu práce v České republice
Authors: Sirovátka Tomáš
Published: October 2015

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Standardní makroekonomické modely a jejich aplikace na podmínky české ekonomiky v letech 1993-1996
Authors: Komárek Luboš
Published: October 2015

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Finanční aspekty čtyř regionálních krizí 90. let
Authors: Fárek Jiří , Foltýn Jaroslav
Published: October 2015

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Dílčí integrace: přehled a výsledky časových řad v těžebním sektoru
Authors: Mainardi Stefano
Published: October 2015

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Moderní učebnice teorií růstu
Authors: Šaroch Stanislav
Published: October 2015

N/A
N/A
Authors: Izák Vratislav
Published: October 2015

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Oceňování kvality životního prostředí - porovnání stanovených a odhalených preferencí
Authors: Švejdarová Hana , Mišovič Ján
Published: October 2015

N/A
Privatizace ve střední a východní Evropě
Authors: Lízal Lubomír
Published: October 2015

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Klasická poptávka po penězích ve standardním modelu nabídky a poptávky
Authors: Mach Petr
Published: October 2015

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Liberalizace obchodu environmentálními službami v rámci všeobecné dohody o obchodu službami
Authors: Tošovská Eva
Published: October 2015

N/A
Možnosti měnové regulace z pohledu postkeynesovské ekonomie
Authors: Svoboda Miroslav
Published: October 2015

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Debata o socialistické kalkulaci a její vliv na vývoj rakouské školy
Authors: ŘÍKOVSKÝ Milan
Published: October 2015

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Prvních sto třicet let vysokoškolské výuky ekonomie v českých zemích
Authors: Krameš Jaroslav
Published: October 2015

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Český trh práce ve druhé polovině 90. let
Authors: Sirovátka Tomáš , Žižlavský Martin
Published: October 2015

N/A
Vytěsňovací efekt v konstituční politice
Authors: Chmelík Petr
Published: October 2015

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Vývoj českých podniků v období transformace: stručný přehled
Authors: Kočenda Evžen , Lízal Lubomír
Published: October 2015

N/A
Jsou obavy z apreciace Koruny opodstatněné?
Authors: Turek Otakar
Published: October 2015

N/A
Komparativní systémy, destruktivní obchod a spravedlivé rozdělování ve světě
Authors: Vanek Jaroslav
Published: October 2015

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Vývoj peněžního multiplikátoru v podmínkách pevného měnového kurzu a rozšířeného fluktuačního pásma
Authors: Horská Helena
Published: October 2015

N/A
Optimum výrobce při stále rostoucích výnosech z rozsahu
Authors: Hlaváček Jiří , Hlaváček Michal
Published: October 2015

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Problém účinnosti měnové politiky v lucasově teorii phillipsovy křivky
Authors: Brůna Karel
Published: October 2015

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Rozšiřování eurozóny: některá rizika pro dohánějící země
Authors: Janáčková Stanislava
Published: October 2015

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Světová 'únava z pomoci' a ekonomika České republiky
Authors: Fárek Jiří , Foltýn Jaroslav
Published: October 2015

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Rozvojové země v éře ekonomické globalizace
Authors: Fárek Jiří , Foltýn Jaroslav
Published: October 2015

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Ohodnotenie výkonnosti verejnej správy: Teoretické východiská a skúsenosti z experimentu v Slovenskej republike
Authors: Nemec Juraj , Medveď Jozef , Šumpíková Markéta
Published: October 2015

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Dlouhodobá nezaměstnanost: další riziko české ekonomiky?
Authors: Frýdmanová Marie , Zamrazilová Eva
Published: October 2015

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Technologická náročnost a zahraniční investice v konkurenční výhodě České republiky
Authors: Kadeřábková Anna
Published: October 2015

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Představuje lidský kapitál konkurenční výhodu ČR?
Authors: Matoušková Zdeňka
Published: October 2015

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Postavení a úloha člověka jako úkol managementu
Authors: Řezník Jiří
Published: October 2015

N/A
Povinné minimální rezervy z vkladů v cizí měně
Authors: Jílek Josef , Jílková Jiřina
Published: October 2015

N/A
Kredibilita a reputace měnové politiky
Authors: Levine Paul
Published: October 2015

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Místní rozvoj
Authors: Macháček Jaroslav
Published: October 2015

N/A
Povinné minimální rezervy (likvidita, měnová politika a dopad na státní rozpočet)
Authors: Revenda Zbyněk
Published: October 2015

N/A
Makroekonomické dopady kapitálové přiměřenosti bank
Authors: Jílek Josef , Jílková Jiřina
Published: October 2015

N/A
Vlastnická dimenze společenské odpovědnosti
Authors: Klusoň Václav
Published: October 2015

N/A
František Ladislav Rieger - zakladatel české ekonomické literatury
Authors: Krameš Jaroslav
Published: October 2015

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Privatizace ve zdravotním průmyslu USA
Authors: Macháček Tomáš
Published: October 2015

N/A
Dezinflace a měnová politika
Authors: Izák Vratislav
Published: October 2015

N/A
Nová střednědobá strategie pro oblast průmyslu a obchodu ČR
Authors: Soukup Petr
Published: October 2015

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Использование двух различных ставок дисконтирования доходов и расходов для стратегической оценки эффективности проекта
Authors: Володин Сергей Владленович
Published: October 2015

Стратегический аспект управления при реализации долгосрочных проектов заключается в учете изменения стоимости денежных средств, динамики рыночной ситуации и взаимосвязи технического уровня с величиной инвестиций и коммерческим эффектом в результате реализации проекта. Эти аспекты демонстрируются на модельном примере оценки инвестиционной эффективности, основанной на результатах сетевого планирования и технико-экономического обоснования проекта высокотехнологичного изделия.
Содействие развитию предпринимательства на местном уровне
Authors: Ксенофонтов Виталий Иванович , Болганова Ирина Владимировна , Климовских Надежда Валерьевна
Published: October 2015

В данной статье рассматриваются организационно-правовые формы реализации предпринимательской деятельности, механизмы воздействия на хозяйствующие субъекты со стороны органов местного самоуправления.
Понятие трудовой адаптации осужденных: системный анализ
Authors: Ибрагимов Олег Александрович
Published: October 2015

Статья посвящена системному анализу содержания понятия трудовой адаптации и специфике его применения в уголовно-исполнительной системе. Автором разработана факторная иерархическая структура системы трудовой адаптации осужденных; раскрывается значение каждого фактора в жизненном цикле системы.
Методические положения оценки влияния финансового потенциала нефтяных компаний на формирование финансового потенциала государства
Authors: Канкиа Алик Георгиевич
Published: October 2015

В статье методом анализа и синтеза осуществлена оценка взаимодействия нефтяных компаний и финансового потенциала РФ по структурным элементам национальной финансовой системы как методической основы оценки взаимообусловленности. С использованием логико-структурного анализа выявлена ресурсная ориентированность экономики России и субституциональность фактора влияния уровня цен на нефть на финансовый потенциал государства. Аргументированы положительные и отрицательные последствия зависимости потенциала государственных финансов от финансового потенциала нефтяных компаний. На основе оценки современного состояния взаимовлияния предприятий нефтегазового сектора на формирование финансового потенциала России обозначено и аргументировано прямое и косвенное его воздействие, что формирует индуцированный эффект взаимовлияния в результате увеличения или уменьшения финансового потенциала государства с учетом потенциалов его структурообразующих компонентов. С целью оценки взаимодействия финансового потенциала нефтяных компаний и государства предложен в качестве методической основы оценки взаимовлияния механизм взаимодействия системы прямо пропорциональных положительных и отрицательных связей структурных элементов финансовых потенциалов предприятия и государства.Такой подход формирует платформу для усовершенствования методологических подходов к оценке взаимодействия финансовых потенциалов субъектов хозяйствования и государства, областью применения которого может стать сфера корпоративного менеджмента и механизм фискальной политики государства.
Морально-этические аспекты манипулирования финансовой информацией
Authors: Богданова Татьяна Александровна
Published: October 2015

В работе анализируются потенциальные возможности манипулирования финансовой информацией при подготовке финансовой и управленческой отчетности, раскрываются особенности применения профессиональных стандартов бухгалтерского учета и бухгалтерской (финансовой) отчетности - МСФО (IFRS) 8 «Операционные сегменты» и SFAS 131 «Раскрытие информации о сегментах бизнеса и связанной информации», а также противоречия, возникающих при их использовании.
Ценовая стратегия банка, основанная на непрерывном отображении частной информации физических лиц в процентной ставке по кредиту
Authors: Романюк Кирилл Андреевич
Published: October 2015

Предложена ценовая стратегия банка на основе дифференциации процентной ставки по кредиту в соответствии с ожидаемыми потерями по ссудам для стимулирования физических лиц предоставлять частную информацию. Показано, что точность, с которой оценивается кредитоспособность потенциальных заёмщиков, влияет на возможности банка отображать частную информацию клиентов в процентной ставке. Получено, что применение непрерывной шкалы оценки кредитоспособности позволяет полностью отразить частную информацию в процентной ставке по кредиту.
Spatiotemporal variation in the relationship between landscape simplification and insecticide use
Authors: Larsen Ashley E. , Gaines Steven D. , Deschênes Olivier
Published: October 2015

Agrochemicals have numerous negative impacts on human health, ecosystem services, and ecological communities. Thus, their efficient use is an economic and ecological priority. Simplified landscapes may enhance insecticide use by reducing natural enemies and increasing connectivity of crops, but empirical tests of this theory are inconclusive. We explored the relationship between landscape simplification and insecticide use using longitudinal data from USDA Census of Agriculture spanning six censuses and 25 years (1987, 1992, 1997, 2002, 2007, 2012) for nearly 3000 counties across the continental United States. The effect of landscape simplification was highly variable spatially and temporally. Landscape simplification was consistently correlated with increased insecticide use in some regions, but not in others. Our results indicate that the landscape‐simplification–insecticide‐use relationship is dynamic, and that national land use policy would benefit from actions that adequately reflect the spatial differences in the importance of landscape complexity to insecticide use.
Comparative Analysis of Calcium‐Binding Myeloid‐Related Protein‐8/14 in Saliva and Serum of Patients With Periodontitis and Healthy Individuals
Authors: Haririan Hady , Andrukhov Oleh , Pablik Eleonore , Neuhofer Michaela , Moritz Andreas , Rausch‐Fan Xiaohui
Published: October 2015

Background: This study aims to investigate calcium‐binding myeloid‐related protein (MRP)‐8/14 in the saliva and serum of individuals with periodontitis and periodontally healthy individuals for the assessment of its role in the pathogenesis and clinical diagnosis of periodontitis.

Methods: This cross‐sectional study includes 56 patients with periodontitis and 44 periodontally healthy individuals. Saliva and serum were collected for the detection of MRP‐8/14 and calcium levels. Periodontopathic bacteria were determined by polymerase chain reaction in saliva. Correlations between salivary and serum MRP‐8/14 levels and clinical parameters, bacteria, and calcium were analyzed with Pearson correlation in a multiple regression model. MRP‐8/14 levels were documented with receiver operating characteristic (ROC) curves.

Results: Compared with healthy individuals, MRP‐8/14 levels were significantly higher in both the saliva and serum of patients with periodontitis, but calcium was increased only in saliva. A high diagnostic potential of salivary MRP‐8/14 was detected for periodontitis (ROC = 0.86). Salivary MRP‐8/14 levels correlated significantly with the presence of the periodontopathogen Treponema denticola, as well as with the clinical parameters of periodontitis.

Conclusion: MRP‐8/14 in saliva might be a potential diagnostic parameter for periodontal disease.
The Association Between Periodontal Inflammation and Labor Triggers (Elevated Cytokine Levels) in Preterm Birth: A Cross‐Sectional Study
Authors: Perunovic Neda Dj. , Rakic Mia M. , Nikolic Ljubinka I. , Jankovic Sasa M. , Aleksic Zoran M. , Plecas Darko V. , Madianos Phoebus N. , Cakic Sasa S.
Published: October 2015

Background: Periodontitis is considered to be a risk factor for preterm birth. Mechanisms have been proposed for this pathologic relation, but the exact pathologic pattern remains unclear. Therefore, the objective of the present study is to evaluate levels of four major labor triggers, prostaglandin E2 (PGE2), interleukin (IL)‐1β, IL‐6, and tumor necrosis factor (TNF)‐α, in gingival crevicular fluid (GCF) and serum samples between women with preterm birth (PTB) and full‐term birth (FTB) and correlate them with periodontal parameters.

Methods: PGE2, IL‐1β, IL‐6, and TNF‐α levels were estimated using enzyme‐linked immunosorbent assays in GCF and serum samples collected 24 to 48 hours after labor from 120 women (60 FTB, 60 PTB).

Results: Women with PTB exhibited significantly more periodontitis, worse periodontal parameters, and increased GCF levels of IL‐6 and PGE2 compared with the FTB group; there were no significant differences in serum levels of measured markers. GCF levels of IL‐1β, IL‐6, and PGE2 and serum levels of TNF‐α and PGE2 were significantly higher in women with periodontitis compared with periodontally healthy women. Serum levels of PGE2 were positively correlated with probing depth (PD) and clinical attachment level (CAL) as well as with GCF levels of TNF‐α in women with PTB.

Conclusions: Women with PTB demonstrated worse periodontal parameters and significantly increased GCF levels of IL‐6 and PGE2 compared with those with FTB. Based on significant correlations among serum PGE2 and PD, CAL, and GCF TNF‐α in PTB, periodontitis may cause an overall increase of labor triggers and hence contribute to preterm labor onset.
The Effect of Suturing Protocols on Coronally Advanced Flap Root‐Coverage Outcomes: A Meta‐Analysis
Authors: Tatakis Dimitris N. , Chambrone Leandro
Published: October 2015

Background: The purpose of this systematic review and meta‐analysis was to investigate whether suturing protocols (suture removal timing and/or type of suture material) influence root coverage outcomes in recession defects treated with a coronally advanced flap (CAF) procedure.

Methods: Databases (MEDLINE, EMBASE) were searched for randomized clinical trials (RCTs) that assessed single‐tooth, Miller Class I/II recession defects, surgically treated by CAF. Mixed‐effects linear regression analysis evaluated differences on complete root coverage (CRC) between RCTs with early (<10 days postoperatively) and late (≥10 days) suture removal, as well as between RCTs using absorbable and non‐absorbable sutures removed ≥10 days postoperatively.

Results: Seventeen RCTs were eligible for inclusion. Overall, data from 325 single gingival recession defects revealed a statistically significant superior proportion of sites exhibiting CRC when sutures were removed ≥10 days postoperatively compared to those in which sutures were removed <10 days (P = 0.03). Conversely, there were no significant differences in CRC outcomes between absorbable and non‐absorbable sutures when they were removed ≥10 days after surgery (P = 1.00). The majority of included RCTs (59%) reported use of non‐absorbable suture materials.

Conclusions: Within the limitations of the available data, it can be concluded that early suture removal (<10 days) can negatively influence root‐coverage outcomes in single‐tooth defects treated by a CAF procedure. There is a strong need for studies designed specifically to investigate suturing protocols in root‐coverage procedures.
“Aging Out” of Dependent Coverage and the Effects on US Labor Market and Health Insurance Choices
Authors: Dahlen Heather M.
Published: October 2015

Objectives. I examined how labor market and health insurance outcomes were affected by the loss of dependent coverage eligibility under the Patient Protection and Affordable Care Act (ACA).

Methods. I used National Health Interview Survey (NHIS) data and regression discontinuity models to measure the percentage-point change in labor market and health insurance outcomes at age 26 years. My sample was restricted to unmarried individuals aged 24 to 28 years and to a period of time before the ACA’s individual mandate (2011–2013). I ran models separately for men and women to determine if there were differences based on gender.

Results. Aging out of this provision increased employment among men, employer-sponsored health insurance offers for women, and reports that health insurance coverage was worse than it was 1 year previously (overall and for young women). Uninsured rates did not increase at age 26 years, but there was an increase in the purchase of non–group health coverage, indicating interest in remaining insured after age 26 years.

Conclusions. Many young adults will turn to state and federal health insurance marketplaces for information about health coverage. Because young adults (aged 18–29 years) regularly use social media sites, these sites could be used to advertise insurance to individuals reaching their 26th birthdays.
Continuing Need for Sexually Transmitted Disease Clinics After the Affordable Care Act
Authors: Hoover Karen W. , Parsell Bradley W. , Leichliter Jami S. , Habel Melissa A. , Tao Guoyu , Pearson William S. , Gift Thomas L.
Published: October 2015

Objectives. We assessed the characteristics of sexually transmitted disease (STD) clinic patients, their reasons for seeking health services in STD clinics, and their access to health care in other venues.

Methods. In 2013, we surveyed persons who used publicly funded STD clinics in 21 US cities with the highest STD morbidity.

Results. Of the 4364 STD clinic patients we surveyed, 58.5% were younger than 30 years, 72.5% were non-White, and 49.9% were uninsured. They visited the clinic for STD symptoms (18.9%), STD screening (33.8%), and HIV testing (13.6%). Patients chose STD clinics because of walk-in, same-day appointments (49.5%), low cost (23.9%), and expert care (8.3%). Among STD clinic patients, 60.4% had access to another type of venue for sick care, and 58.5% had access to another type of venue for preventive care. Most insured patients (51.6%) were willing to use insurance to pay for care at the STD clinic.

Conclusions. Despite access to other health care settings, patients chose STD clinics for sexual health care because of convenient, low-cost, and expert care.

Policy Implication. STD clinics play an important role in STD prevention by offering walk-in care to uninsured patients.
Eco-Efficient Method for the Dissolution Enhancement of Heavy Crude Oil Using Ionic Liquids
Authors: Sakthivel Sivabalan , Velusamy Sugirtha , Gardas Ramesh L. , Sangwai Jitendra S.
Published: October 2015

The upstream petroleum industry faces operational and technical challenges due to the production of crude oil containing waxes, asphaltenes and aromatic compounds and also due to the formation of gas hydrates resulting in their deposition in the surface and production equipments and in offshore pipelines affecting the safer operations, in turn resulting in huge production losses, and threatening the environment. It is also estimated that, all over the globe there are more than double the times of reserves of heavy and extra-heavy crude oil than the lighter one. As the world's demand for light crude oil continues to increase tremendously, the supplies of these easily extractable crude oil continues to decrease although efforts have already been made to extract the heavy and extra-heavy oil that was previously considered uneconomical to produce and process. The main aim of this investigation is to finding greener-environmentally friendly methods for oil and gas industries, such as the use of aromatic and aliphatic based ionic liquids for the efficient dissolution of tank-bottom sludge, heavy crude oil and pipeline wax deposition. Ionic liquids, therefore, have a tremendous scope in the application of oil recovery by assisting in recovering valuable crude oil from the oily sludge which is otherwise lost due to dumping and burning. Moreover, the ionic liquids used could be recovered and can be recycled and reused several times. The enhancement in the solubility of heavy crude oil in solvent and ionic liquids mixture is investigated using UV-Visible, FT-IR and 13C-NMR spectroscopic techniques. It is observed that, the dissolution of heavy crude oil is more in the solution with ionic liquid than with the solvent alone. Solubility of heavy crude oil in the presence of studied ionic liquids and in the studied solvents increases about 65 %, when compared with the solutions of heavy crude oil in solvents without ionic liquids. The application of this method could also helps in the highly essential enhanced oil recovery industry.
Utilization of an Innovative Tool to Improve Hole Cleaning Efficiency in Extended Reach Wells in Saudi Arabia
Authors: Okot Mike , Campos Marlio , Muñoz German , Alalsayednassir Alawi G. , Weber Matt , Muneer Zahid
Published: October 2015

Saudi Aramco operates one of the largest offshore oilfield developments in the world. This field is made up of 41 kilometers of causeway, 3 kilometers of bridges, 27 drilling islands, 13 offshore platforms, and 16 onshore drill sites. The magnitude of the field has pushed cutting edge technology and processes to the forefront of the industry. This new development has driven achievements in multilateral and extended reach directional wells. One challenge the operator faces is to maintain proper hole cleaning in extended 8½ in. tangent sections at a 85-87° inclinations, which are drilled in excess of 10,000 ft.

Historically, drilling very long tangent sections required the use of several tandem sweep pills, wiper trips, and reaming/back reaming to maintain hole quality and efficiently remove cuttings bed from the wellbore. The negative effects of poor hole cleaning can lead to tight intervals, increased torque and drag, and eventually stuck pipe.

In an effort to drill efficiently, utilization of a new technology to increase the cutting removal was trial tested on well A1 from an onshore location of the field. The ERD well, A1, was drilled to a total depth of 30,480 ft MD (8,650 ft TVD) into a stratigraphic environment composed of limestone, shale, and siltstone. The objective of the trial test for the tool was to improve the drilling efficiency. To obtain the best possible hole cleaning, a simulation was performed by placing the tools every three stands along the tangent section in the 8½ in. hole section.

The goal of the trial test was to achieve the following: Enhance hole cleaning by removal of cuttings bed.Reduce the frequency/number of tandem sweep pills.Reduce the frequency/number of wiper trips.Reduce torque and drag and compare it with the offset wells.Reduce drilling cost.

A service company installed a cuttings flow-meter system at the shakers, which was used to evaluate the hole cleaning efficiency and performance of the hole cleaning tools. This paper will demonstrate the systematic methodology, which Saudi Aramco and the service company used to approach the utilization of the hole cleaning tools to achieve a clean hole in well A1.
Injection Water Compatibility Study and Scale Prediction Analysis for a Low-Permeability Carbonate Reservoir Development Optimization
Authors: Osode P. I. , Bataweel M. A. , Alkhaldi M. H.
Published: October 2015

Injection water-induced formation damage evaluation is considered critical in a low-permeability (2 md) oil reservoir development because of the potential bridging of narrow pore throats by in-situ scale precipitates. This problem can be mitigated with processed low-salinity water, albeit at significantly high capital expenditure associated with water processing facility that could erode the economic margin of the project. Laboratory fluid compatibility tests and software simulation were therefore conducted to appraise the risk of inorganic scale deposition during water injection in an undeveloped carbonate reservoir with high-salinity formation brine (TDS ~205 g/L).

The laboratory experiments were initially carried out with both synthetic and actual field samples including formation water extracted from pressurized downhole fluid tester. Coreflood and fluid-fluid compatibility tests were carried out at estimated bottom-hole temperature of 150 °F and pressure of 1,000 psi. Comprehensive mixed-brine simulation software was also used to determine the inorganic scaling tendency expected with the use of seawater, produced water and diluted produced water for the planned injectors.

The study identified an inherently high calcium sulfate risk associated with the planned seawater injection in the new reservoir while the highest combined inorganic scale precipitation was observed at approximately 1:1 ratio for the formation brine-seawater mixture.

This paper discusses the laboratory fluid compatibility experiments and scale prediction analysis for different injection water utilization while providing an insight into the potential impact of scale risks associated with seawater injection in an onshore development reservoir with high divalent-salt content formation brine.
A New Technique to Increase the Performance of Organic Acids to Stimulate Carbonate Reservoirs at High Acid Concentrations
Authors: Mohamed R. Saber , Rabie Ahmed I. , Nasr-El-Din Hisham A.
Published: October 2015

Organic acids have been used to stimulate HP/HT oil and gas wells. However, these acids cannot be used above certain concentrations, which depend on the type of acid used. For example, 9 wt% is the upper limit for formic acid concentration, whereas acetic and citric acids can be used only up to 13 and 1 wt%, respectively. Using these acids above these limits causes a formation damage results from the precipitation of the acids' calcium salts.

A new technique was developed and experimentally proven to increase the concentration of organic acids that can be used in the oilfield without precipitation of the reaction products. This involves the addition of an environmentally friendly acid (gluconic acid) chelant to the selected organic acid under investigation. In a recently published paper (SPE-173751), the authors showed a significant improvement in the solubility of calcium lactate when lactic acid was mixed with gluconic acid to stimulated calcite rocks. The current work investigates the generalization of this idea for other organic acids such as: acetic, formic, citric, glycolic, and boric acids, with an objective to examine the effectiveness of the new acids to stimulate carbonate formation at 150-250°F and determine the optimum injection requirements.

Coreflood results showed that mixing gluconic acid with acetic acid increased the solubility of the resulted calcium salt and allowed using acetic acid at 15 wt% without the risk of precipitating calcium acetate. When mixed with formic acid, a minimum of acid pore volume was observed at a gluconic: formic acids molar ratio of 1:7. This allowed the use of formic acid at 12.5 wt% without any observation of calcium formate precipitation. Gluconic-citric and gluconic-boric acid mixtures required as high as 4 PV to breakthrough, indicating that the enhancement of product solubility depends on the type of the acid mixed with gluconic acid. Finally, a gluconic-glycolic acid mixture with a molar ratio of 1:1 showed the least acid pore volume required to breakthrough (2.35 PV) with similar results to what was previously reported for gluconic-lactic acid mixtures.
Digital core analysis of Lower Ahmadi to Upper Wara formations
Authors: Golab A.. , Deakin L.. , Ravlo V.. , Mattisson C.. , Carnerup A.. , Young B.. , Idowu N.. , Al-Jeri S. A. , Al-Rushaid M. A.
Published: October 2015

A study was designed to confirm the formation properties obtained from available conventional RCA data and inferred from corrected wireline log data using digital rock analysis (digital RCA and SCAL analysis) on cores from the Greater Burgan field. This study was performed for Kuwait Oil Company, Fields Development Group (S&EK) by FEI Digital Rock Services in 2014.

As part of this study, 27 feet of whole core, from the Lower Ahmadi (AHL2) to Upper Wara (WU1) formations, were imaged by X-ray computed tomography (CT) imaging, including 1 foot of partially preserved core. 14 plugs were extracted from these cores and imaged in 3D by a high resolution helical micro-CT. Analysis revealed stark differences in mineralogy, grain size and sorting and the presence of severe fracturing in some plugs due to the fragility and friability of the rock.

Sub-plugs were extracted from 10 of the 14 plugs (including one sub-plug from the partially preserved section) and imaged in 3D by helical micro-CT. 7 of the sub-plugs proved suitable for digital RCA and SCAL analysis. The 3D images were used to calculate digital RCA properties (porosity, permeability, grain density, grain size distribution and formation factor) and pore network models were built to perform digital SCAL simulations and predict multiphase transport properties such as Pc, kr and resistivity index for primary drainage and imbibition.

In addition, the in situ mineralogy of each plug was analysed using 2D SEM-EDS automated, quantified mineral mapping. The mineral maps, combined with BSEM images, contain rich textural information and were registered into perfect geometric alignment with the 3D micro-CT images.

A tight rock workflow was used to identify sub-resolution porosity in 3 of the plugs. Experimental MICP curves showed that substantial portions of the pore throats were below the image resolution, caused by large amounts of pore-filling materials. Hence, pore scale information could not be directly extracted from some images. Consequently, process based modelling was carried out on two plugs to generate pore-networks. A quasi-static pore-network model was used to simulate oil/water displacements and predict multiphase transport properties. Detailed imaging of oil-in-place and porosity was performed on a partially preserved plug to create a map of remaining oil which revealed that oil was retained in most porous grains and strongly retained in clay-rich zones.

The digital core analysis results are in agreement with available log and core data. The Lower Ahmadi (AHL2) section is good quality in terms of porosity, permeability and flow properties, whereas the Upper Wara (WU1) section is of poorer quality.
An Innovative Cup Seal Isolation Openhole Packer that can React to Wellbore Variations
Authors: Adan Iain , Robertson Bruce , Kamal Ramy , El-Tonsy Mohamed
Published: October 2015

A novel openhole packer system was developed and successfully field deployed following an extensive development and testing program. A gap within the industry was identified by two operators who determined that assured zonal isolation was a key requirement for future field developments. A design study was undertaken to determine possible sealing solutions. The intial concepts were adaptations of cased-hole technology that were confirmed to be inappropriate. A cup seal element system actuated by an innovative deployment system capable of handling variances in hole size and hole irregularities without excessively stressing the near well bore region was found to offer a robust sealing solution. A qualification program was developed and the packer has been field deployed successfully in a number of geographic locations.