bluuebunny/crossref_metadata_2025_split huggingface dataset:
Acompanhamento do Desempenho das Atribuições de Tutores a Distância: Método e Ferramenta
Authors: Cavalcante Carlos Henrique Leitão , De Sousa Verônica Lima Pimentel , De Sousa Paulo Benicio Melo 
Published: October 2015

Entre os diversos papéis dos atores da Educação a Distância, destaca-se o papel desempenhado pelo tutor a distância, responsável por realizar o acompanhamento acadêmico, por reforçar o conteúdo e tirar dúvidas dos alunos na disciplina. Dessa forma, é de grande importância para a qualidade do ensino a distância o monitoramento, o controle e o acompanhamento de suas atribuições. Esse trabalho de supervisão da tutoria é necessário, pois visa corrigir problemas inerentes ao papel dos tutores, evitando prejuízos ao processo de ensino e aprendizagem nos cursos a distância. O estudo apresentado foi aplicado em 81 tutorias de um curso do programa UAB em uma Instituição de Ensino Superior (IES). Nesse sentido, esta pesquisa possibilitou a classificação das atribuições de um tutor a distância, a delimitação de quais atribuições seriam monitoradas e um processo de definição de premissas e métricas de desempenho para cada uma dessas atribuições. Esse processo serviu de base para a criação de um mecanismo computacional, denominado MDTMoodle, que proporcionou a visualização do desempenho dos tutores a distância através de semáforos.Palavras-chaves: Educação a distância; Tutoria a distância; Acompanhamento de tutoria. Monitoring the Efficiency on Distance Tutors Roles: a Method and a Tool Abstract Among the various roles of the actors in Distance Learning, it is worth highlighting the role played by the tutor, who is responsible for performing academic monitoring, enhancing content, and taking questions from students on the subject matter. Therefore, monitoring, control, and accompaniment of tutors are very important for the quality of distance education. These will correct the problems, avoiding losses in the teaching and learning process. This work has been applied on 81 tutored online courses of a Higher Education Institution. In this context, the research has enabled a classification of the tutor's assignments, the boundaries of which ones would be monitored, and the definition of assumptions and performance metrics for each of the assignments. This process formed the basis for the creation of a computational tool, called MDTMoodle, which provided the visualization of distance tutors' performances, using the concepts of traffic lights.Keywords: Distance learning; Distance tutoring; Tutor monitoring.
A Docência On-line: Um Caso no Ensino de Teclado na Licenciatura em Música a Distância da UnB
Authors: Costa Hermes Siqueira Bandeira , Marins Paulo Roberto Affonso 
Published: October 2015

Esta pesquisa teve por objetivo investigar como ocorre o ensino de teclado a distância, no âmbito do curso de licenciatura em Música a distância da Universidade de Brasília (UnB), assim como a utilização das tecnologias digitais nessa modalidade de ensino. A metodologia adotada foi o estudo de caso e os dados foram obtidos a partir de entrevistas semiestruturadas com os professores responsáveis pela criação das disciplinas de teclado do referido curso. Verificou-se que o ensino de teclado a distância ocorre prioritariamente de modo assíncrono entre professor e aluno por meio de materiais pedagógicos, produzidos previamente e veiculados por meio da combinação de diversas mídias digitais. O emprego das tecnologias digitais no ensino a distância é massivo e sua utilização, por vezes, é aleatória. Apesar de a interação entre professor e aluno ocorrer majoritariamente assincronamente, em detrimento das formas síncronas de comunicação, o aprendizado do teclado é viável para a finalidade a que se dispõe: ter o instrumento de teclas para ensinar e fazer música.Palavras-chave: Educação a distância; Educação musical a distância; Docência on-line; Tecnologias digitais. The Online Teaching: A Case in Teaching of Keyboard in Distance Music Degree of UnBAbstract This research aimed to investigate how teaching keyboard at distance occurs in Music distance education program at University of Brasília (UnB), as well as the use of digital technologies in this modality of teaching. The methodology adopted was the case study and data was obtained from semi-structured interviews with the teachers responsible for the elaboration of keyboard courses from the refered program. It was found that the teaching of keyboard at distance occurs primarily asynchronously between teacher and students and through the learning materials produced in advance and broadcasted through a combination of various digital media. The use of digital technologies is massive and its use sometimes is random. Although the interaction between teacher and student occurs mostly asynchronously to the detriment of synchronous forms of communication, learning keyboard is viable for the proposed goal: have keyboard instrument as a tool to teach and to make music.Keywords: Distance education; Music distance education; On-line teaching; Digital technologies.
Adjunctive Local Delivery of Aloe Vera Gel in Patients With Type 2 Diabetes and Chronic Periodontitis: A Randomized, Controlled Clinical Trial
Authors: Pradeep A.R. , Garg Vibhuti , Raju Arjun , Singh Priyanka 
Published: October 2015

Background: Herbal agents such as Aloe vera (AV) have been used in medical and dental therapy for thousands of years. AV has anti‐inflammatory, antioxidant, antimicrobial, hypoglycemic, healing‐promoting, and immune‐boosting properties. This study aims to investigate the clinical effectiveness of locally delivered AV gel used as an adjunct to scaling and root planing (SRP) in the treatment of patients with type 2 diabetes mellitus (T2DM) and chronic periodontitis (CP).Methods: Sixty patients with probing depth (PD) ≥5 mm and clinical attachment level (CAL) ≥3 mm were randomly divided into two groups. All patients underwent SRP. Placebo gel was locally delivered to group 1 and AV gel to group 2. Full‐mouth plaque index (PI), modified sulcus bleeding index (mSBI), PD, and CAL were recorded at baseline and 3 and 6 months.Results: Patients in group 2 showed significantly greater mean reductions in PI, mSBI, and PD and mean gain in CAL compared with those in group 1 from baseline to 3 months. Gain in CAL was significantly greater in group 2 at all time intervals versus group 1.Conclusion: Adjunctive use of locally delivered AV gel, in comparison to locally delivered placebo gel, is associated with greater reduction in PI, mSBI, and PD as well as more gain in CAL in patients with T2DM and CP.
Antibacterial Activity of Curcumin Against Periodontopathic Bacteria
Authors: Izui Shusuke , Sekine Shinichi , Maeda Kazuhiko , Kuboniwa Masae , Takada Akihiko , Amano Atsuo , Nagata Hideki 
Published: October 2015

Background: Curcumin is a polyphenol extracted from root of turmeric and known to possess multifunctional properties, including antibacterial activity. Although previous studies have investigated the effects of curcumin on microorganisms, available knowledge on the effects of curcumin on periodontopathic bacteria is still limited. In this study, the antibacterial effect of curcumin on periodontopathic bacteria is investigated, particularly Porphyromonas gingivalis.Methods: Representative periodontopathic bacteria were cultured in media with and without various curcumin concentrations, and the optical density at 600 nm was measured for 60 hours. The inhibitory effect of curcumin on P. gingivalis Arg‐ and Lys‐specific proteinase (RGP and KGP, respectively) activities were assessed using spectrofluorophotometric assay. Analysis of biofilm formation by P. gingivalis with or without Streptococcus gordonii was conducted using confocal laser‐scanning microscopy (CLSM).Results: Curcumin inhibited the growth of P. gingivalis, Prevotella intermedia, Fusobacterium nucleatum, and Treponema denticola in a dose‐dependent manner. Bacterial growth was suppressed almost completely at very low concentrations of curcumin. Conversely, 100 μg/mL curcumin did not suppress the growth of Aggregatibacter actinomycetemcomitans. It also demonstrated inhibitory effects against RGP and KGP activities in a dose‐dependent manner. CLSM revealed that curcumin suppressed P. gingivalis homotypic and P. gingivalis–S. gordonii heterotypic biofilm formation in a dose‐dependent manner. A concentration of 20 μg/mL curcumin inhibited these P. gingivalis biofilm formations by >80%.Conclusion: Curcumin possesses antibacterial activity against periodontopathic bacteria and may be a potent agent for preventing periodontal diseases.
Is Cognitive Status Related to Oral Hygiene Level and Appropriate for Determining Need for Oral Hygiene Assistance?
Authors: Steinmassl Patricia‐Anca , Steinmassl Otto , Kraus Gabriela , Dumfahrt Herbert , Grunert Ingrid 
Published: October 2015

Background: With declining general health, the maintenance of oral health becomes increasingly difficult. Unfortunately, health care resources are limited. An assessment tool for detecting a patient’s need for oral health care assistance would promote its adequate distribution. The aim of this study is to evaluate if the Shulman clock‐drawing test score is a suitable assessment tool for determining the need for oral hygiene assistance.Methods: Data collected from recent dental checkups of 126 inhabitants of five Austrian residential care facilities were analyzed. The Shulman clock‐drawing test score was used as a measure for cognitive abilities and related to tooth and denture hygiene indices, which were assessed using the approximal space plaque index (API) and the denture plaque index (DPI).Results: Shulman score values were distributed almost evenly in the study population. The mean API was 83.6% (SD 20.2%) for the maxilla and 94.9% (SD 15.6%) for the mandible. The mean DPI was 43.9% (SD 31.4%). Cognitive impairment was not statistically related to the dental or denture hygiene index.Conclusions: A high Shulman clock‐drawing test score indicates the need for oral hygiene assistance, but it is not suitable as a single tool to assess this need. Patients with other disabilities might equally qualify for assistance. Dentures, however, can be cleaned quickly and efficiently independently of patient compliance; therefore, cleaning the patients’ dentures should be part of nursing personnel’s daily care routine for every patient.
Meeting the Tobacco Cessation Coverage Requirement of the Patient Protection and Affordable Care Act: State Smoking Cessation Quitlines and Cost Sharing
Authors: Lemaire Robin H. , Bailey Linda , Leischow Scott J. 
Published: October 2015

Objectives. We explored whether various key stakeholders considered cost sharing with state telephone-based tobacco cessation quitlines, because including tobacco cessation services as part of the required essential health benefits is a new requirement of the Patient Protection and Affordable Care Act (ACA). Methods. We analyzed qualitative data collected from interviews conducted in April and May of 2014 with representatives of state health departments, quitline service providers, health plans, and insurance brokers in 4 US states. Results. State health departments varied in the strategies they considered the role their state quitline would play in meeting the ACA requirements. Health plans and insurance brokers referred to state quitlines because they were perceived as effective and free, but in 3 of the 4 states, the private stakeholder groups did not consider cost sharing. Conclusions. If state health departments are going to initiate cost-sharing agreements with private insurance providers, then they will need to engage a broad array of stakeholders and will need to overcome the perception that state quitline services are free.
Racial and Ethnic Disparities in Services and the Patient Protection and Affordable Care Act
Authors: Abdus Salam , Mistry Kamila B. , Selden Thomas M. 
Published: October 2015

Objectives. We examined prereform patterns in insurance coverage, access to care, and preventive services use by race/ethnicity in adults targeted by the coverage expansions of the Patient Protection and Affordable Care Act (ACA). Methods. We used pre-ACA household data from the Medical Expenditure Panel Survey to identify groups targeted by the coverage provisions of the Act (Medicaid expansions and subsidized Marketplace coverage). We examined racial/ethnic differences in coverage, access to care, and preventive service use, across and within ACA relevant subgroups from 2005 to 2010. The study took place at the Agency for Healthcare Research and Quality in Rockville, Maryland. Results. Minorities were disproportionately represented among those targeted by the coverage provisions of the ACA. Targeted groups had lower rates of coverage, access to care, and preventive services use, and racial/ethnic disparities were, in some cases, widest within these targeted groups. Conclusions. Our findings highlighted the opportunity of the ACA to not only to improve coverage, access, and use for all racial/ethnic groups, but also to narrow racial/ethnic disparities in these outcomes. Our results might have particular importance for states that are deciding whether to implement the ACA Medicaid expansions.
Review of Capillary Number in Chemical Enhanced Oil Recovery
Authors: Guo Hu , Dou Ma , Hanqing Wang , Wang Fuyong , Yuanyuan Gu , Yu Zhaoyan , Yansheng Wang , Li Yiqiang 
Published: October 2015

AbstractAfter decades of development, great progress has been made in capillary number theory and it has important but often incorrect application in EOR. Investigation into progress on capillary number theory and some misuse of capillary number theory helps to make better use of it. Latest progress concerning with capillary number theory and its application in chemical EOR is reviewed by studying the experiments data and checking its model hypothesis. Classic Capillary Desaturation Curves (CDC) are summarized and new CDC is introduced. Typical classical CDC showed larger capillary number lead to lower residual oil saturation and when capillary number increased to a certain critical value(first critical value), the residual oil saturation could drop to a minimum value even zero. CDC shapes were different in water-wet and oil-wet media. Recovery can be improved by increasing flooding rate, though invalid and impractical, displacement phase viscosity or/and reducing oil/water interfacial tension, which are actually adopted by chemical flooding. Guided by this theory and also first critical capillary number value requirement, it lead to the pursuit of low interfacial tension to largest extent and the requirement of ultra-low interfacial tension (10-3mN/m) in surfactant screening. However, experiments data showed that residual oil saturation was not always decreasing as capillary number increased. After capillary number increased to a certain value (second critical value), the residual oil saturation may increase or decrease as capillary number increase. What was more, the final residual oil saturation was quite more than zero and this CDC was regarded as the new CDC. Experiments in heavy oil laboratory tests showed that smaller injection rate lead to higher recovery which seemed contrary to capillary theory.
Focused Engineering Initiative Produces New 16-in Roller Cone TCI Design to Solve Carbonate Drilling Challenges in Northern Kuwait
Authors: Al-Enezi Dakhil , Sounderrajan Mahesh , Boukhamseen Ali , Al-Safran Sarah , Hassan Said , Nair Prakash , Ghoneim Osama , Bits Smith 
Published: October 2015

AbstractInterbedded formations with vastly different compressive strengths and blind drilling are two distinct challenges the operator must solve constructing a 16″ hole section in Northern Kuwait. These issues can lead to cutting structure damage to roller cone bits resulting in low performance and downhole tool failure. In addition the operator strives to achieve fast ROP by applying high weight-on-bit (WOB) through the hard Dammam to Mutriba carbonate sections which can also cause damage to the tungsten carbide insert (TCI) bit's cutting structure.To manage the challenges, the operator's drilling team working in conjunction with the bit supplier launched a performance improvement initiative. The carbonate application was analyzed using finite element analysis (FEA) based dynamic simulation program to fully understand how to stabilize the bit in different downhole conditions and improve hydraulic efficiency. Based on the computer analysis and field run data, a new stable bit was designed.The new bit includes a specialized cutting structure configuration, improved hydraulics and optimized insert carbide grades to mitigate impact damage. A patented double sealed bearing was also utilized to improve durability and seal reliabilityThe new roller cone bit design was run with an optimized drilling plan setting a record rate of penetration (ROP) in its first test run. The new bit design has enabled the operator to drill a challenging carbonate section of 4775 ft from Shoe to total depth (TD) with a record penetration rates (ROP) of 65.8 ft/hr achieving 7.7 % increase in ROP over the best performance in the same field. The authors will discuss the application challenges, analysis and resulting performance improvement.
Latest Developments using Fiber Optic Based Well Surveillance such as Distributed Acoustic Sensing (DAS) for Downhole Production and Injection Profiling
Authors: Horst Juun van , Panhuis Peter in , Al-Bulushi Nabil , Deitrick Greg , Mustafina Daria , Hemink Gijs , Groen Lex , Potters Hans , Mjeni Rifaat , Awan Kamran , Rajhi Salma , Bakker Goos 
Published: October 2015

Abstract
In the past decade, Fiber-Optic (FO) based sensing has opened up opportunities for in-well reservoir surveillance in the oil and gas industry. Distributed Temperature Sensing (DTS) has been used in applications such as steam front monitoring in thermal EOR and injection conformance monitoring in waterflood projects using (improved) warmback analysis and FO based pressure gauges are deployed commonly. In recent years1 significant progress has also been made to mature other, new FO based surveillance methods such as the application of Distributed Strain Sensing (DSS) for monitoring reservoir compaction and well deformation, multidrop Distributed Pressure Sensing (DPS) for fluid level determination, and Distributed Acoustic Sensing (DAS) for geophysical and production/injection profiling. For the latter application, numerous field surveys were conducted to develop the evaluation algorithms or workflows which convert the DAS noise recordings into flow rates from individual zones. The applicability of a new graphical user-interface has been expanded to include smart producers and injectors that allows the user to visualize (in real time), QC and evaluate the DAS data. Also, the evaluation methods for the use of DTS for warmback analysis have been significantly improved.
There are still improvements to be made in enabling Distributed Sensing infrastructure, such as handling and evaluation of very large data volumes, seamless FO data transfer, the robustness & cost of the FO system installation in subsea installations, and the overall integration of FO surveillance into traditional workflows. It will take some time before all these issues are addressed but we believe that FO based applications will play a key role in future well and reservoir surveillance.
In this paper we present a recent example of single-phase flow profiling using DAS. The example is from a long horizontal, smart polymer injector operated by Petroleum Development Oman (PDO).
Characterization of Heavy Oil in Clastic Reservoir - A Case Study
Authors: Kumar Sanjeev , Al-Hamad Hamad , Al-Bous Faisal , Al-Mutairi Fayez , Sanyal Arunava , Safar Ahmad 
Published: October 2015

AbstractA number of heavy oil or tar accumulations have been reported in several Middle East reservoirs. Heavy oil is often overlooked as a resource because of the expense and technical challenges associated with producing it.But more than 6 trillion barrels of oil in place attributed to the heaviest hydrocarbon. Most of the conventional onshore hydrocarbon reservoirs have been depleted, and time of easy hydrocarbon is over; so, it is prudent to look into the unconventional reservoirs like heavy oil. An accurate evaluation and characterization is obviously crucial to its efficient exploitation. The evaluation and characterization of heavy oil depends on its identification, quantification, analysis of representative fluid sample and reservoir properties.The methods proposed in the literature might be successful in identifying heavy oil reservoirs but are less reliable for quantifying the amount of heavy oil, and are insensitive to oil viscosity, the key property that controls the producibility of heavy oil. Heavy oil characterization is incomplete without the sampling of fluid in the reservoir environment. It is often desirable to acquire the sample with wireline formation tester tool and integrate the in-situ fluid properties with NMR logs.In this study we successfully integrate, conventional logs, NMR logs, in-situ fluid sample, PVT data and conventional core data for identification and quantification of heavy oil present in the pore space. This integrated study overcomes the limitations of individual techniques. Our case study shows that the porosity deficit between conventional total porosity and NMR porosity gives the identification of heavy oil present in the pore space, this difference between two porosities represents the extra viscous component of fluid that are not observable by the NMR tool. The amount of porosity deficit is the amount of extra heavy oil / tar in the pore space and this gives the quantification of the same.Conventional and NMR derived reservoir properties are required to be integrated with conventional core porosity, permeability, water saturation and viscosity derived from PVT sample in order to characterize Heavy Oil in Clastic Reservoirs.