bluuebunny/crossref_metadata_2025_split huggingface dataset:
Da Comunicação Tele (J.Moreno) à informação de Campo Semântico (A. Menghetti): diferentes olhares para a mesma informação em consultoria
Authors: Spanhol Carmen Ivanete D`Agostini 
Published: February 2019

No presente trabalho tem-se por objetivo articular o conceito desenvolvido pela Teoria Psicodramática sobre a comunicação Tele (MORENO, 1974;1987) e ampliar o conhecimento para leitura e compreensão das informações através do Campo Semântico (MENEGHETTI, 1993; 2010; 2015) proposto pela Ontopsicologia. Trata-se de uma pesquisa que se dispõe a fazer um estudo teórico e apresentar uma clarificação para o tema da comunicação/ informação em consultoria. O ponto de partida é a abordagem de Moreno (1974;1987) sobre comunicação Tele e se completa na leitura das informações de campo semântico apresentado por Meneghetti (1993; 2010; 2015). O texto propõe a compreensão, ilustrada à luz de fragmentos de um Case. Apresenta nas considerações finais, pontos relevantes do contraponto entre os autores e abre a possibilidade ao profissional, de chegar ao conhecimento das causas, através do conhecimento de Campo Semântico.
Ambiente Virtual de ensino-aprendizagem em dispositivos móveis para o curso de comércio exterior
Authors: Simon Hamlet Xavier 
Published: February 2019

As tecnologias digitais de informação e comunicação revolucionam, a cada instante, as relações e interações entre os docentes, discentes e, especialmente, os recursos utilizados para os processos educativos. Isto não ocorre somente nos ambientes tradicionais de ensino, mas também na forma mais ubíqua de se trabalhar com o ensino-aprendizagem em rede. Destaca-se o desenvolvimento e a operacionalização de módulos educacionais em rede através da plataforma Moodle - software livre e mediador-chave de instituições de ensino superior, os quais permitem potencializar o conhecimento discente a partir da prática, da interação e da produção colaborativa. Utilizamos a pesquisa-ação educacional em cinco ciclos espiralados, acoplada à customização de tecnologias, como a inclusão de recursos educacionais específicos acessados através de dispositivos móveis. Os resultados configuram-se com o aprimoramento da prática docente e inovando-se no planejamento de disciplinas com conteúdo prático para o curso de comércio exterior. A evolução passa pela mudança na prática pedagógica, evoluindo-se do conteúdo transmitido de forma bancária, para a lógica da resolução de problemas.
Uç alma ve Üre Uygulamalarının Safari Sunset ve Gold Strike Protea Çeşitlerinin Fenolojik, Morfolojik ve Çiçek Verimi Özelliklerine Etkileri
Authors: ÇALIŞKAN Oğuzhan 
Published: February 2019

Amaç: Bu çalışma, ülkemiz kesme çiçek sektörü için yeni bir tür olan protealarda yürütülmüştür. Çalışmada, Gold Strike ve Safari Sunset protea çeşitlerinde uç alma ve yapraktan üre uygulamalarının bazı fenolojik, morfolojik ve verim özelliklerine etkileri incelenmiştir.Materyal ve Metot: Çalışmada Safari Sunset ve Gold Strike çeşitlerinde uç alma ve yapraktan üre uygulamaları üç yinelemeli ve her yinelemede beş bitki olacak şekilde toplam 15’şer bitkide yürütülmüştür. Uç alma uygulamalarında sürgün uzunluğu 15 cm (UA1), 20 cm (UA2) ve 25 cm (UA3) olduğunda 3’er cm’lik bir uç alma yapılmıştır. Yapraktan üre uygulamalarında %0.5 (Ü1) ve %1.0 (Ü2) dozları kullanılmıştır. Bu uygulamaların protea çeşitlerinin hasat tarihleri, çiçek sapı uzunluğu (cm) ve kalınlığı (mm), yaprak boyutlarına (eni, boyu ve alanı) ve verim özelliklerine olan etkileri incelenmiştir.Bulgular: Kırıkhan/Hatay ekolojisinde hasat tarihi Gold Strike çeşidinde 8 Aralık’ta gerçekleşirken, hasat tarihi Safari Sunset çeşidinde 22 Aralık’ta gerçekleşmiştir. Çiçek sapı uzunluğunun Safari Sunset çeşidinde (83.60 cm) Gold Strike çeşidinden (68.43 cm) daha fazla olduğu saptanmıştır. Uç alma uygulamalarının çiçek sapı uzunluğunu azalttığı, ancak üre uygulamalarının çiçek sapı uzunluğunu arttırdığı tespit edilmiştir. Pazarlanabilir verim ve dekara verim üzerine çeşit, uç alma ve üre uygulamalarının istatistiksel olarak önemli etkisi tespit edilmiştir. Gold Strike çeşidinde pazarlanabilir verim ve dekara verim değerleri (23.61 adet sürgün/bitki ve 51.648 adet sürgün/ da) Safari Sunset çeşidine göre (21.68 adet sürgün/bitki ve 48.171 adet sürgün/da) daha yüksek bulunmuştur. Uç alma uygulamalarının dekara verimi kontrole göre yaklaşık %30 oranında arttırdığı saptanmıştır. En yüksek pazarlanabilir verim ve dekara verim UA3xÜ2 uygulamasından (sırasıyla, 28.24 adet sürgün/bitki ve 62.753 adet sürgün/da) elde edilmiştir.Sonuç: Gold Strike ve Safari Sunset çeşitlerinde uç alma ve üre kombinasyonlarının verim üzerine olumlu etkileri olduğu tespit edilmiştir.
Expression of Four Cytokine/Chemokine Genes in Peripheral Blood Mononuclear Cells infected with Dengue Virus
Authors: Sri Masyeni Dewa Ayu Putri , Hadi Usman , Kuntaman Kuntaman , Yohan Benediktus , Margyaningsih Nur Ita , Sasmono R Tedjo 
Published: February 2019

Overproduction of numerous pro-inflammatory cytokines, during dengue virus (DENV) infection, has been related to plasma leakage in the vascular endothelium and studied elsewhere with conflicting results. The current study objective is to evaluate the expression of four cytokine/chemokine genes following DENV-2 infection within peripheral blood mononuclear cells (PBMC) isolated from a healthy donor. Venous blood was drawn, and PBMCs were isolated using Ficoll density gradient centrifugation. Cells were maintained in culture medium and infected with Indonesian isolate of DENV-2. Cells were harvested and followed by total RNA extraction and reverse-transcription into cDNA using oligo d(T) primers and Reverse Transcriptase enzyme system. The SYBR Green-based quantitative qRT-PCR was used to calculate the relative expression of IL-6, IL-8, IP-10 and MIP-1β- encoding genes during infection time points, compared to uninfected cell controls. The observation of the cytokine was on the 6 and 18 hours post-infection. The different expression profiles of cytokines/chemokines were observed. The up-regulation of gene expression was observed for IL-8 and IP-10. In contrast, the down-regulatory of IL-6 and MIP-1β genes expression was documented during the infection period. The cytokine IL-8 and IP-10 are potent chemoattractants in the recruitment of neutrophil, basophil, and lymphocytes in response to an infection. The highlight of this study is on the up-regulation of IL-8 and IP-10 genes expression which may confirm the roles of these chemokines in the pathogenesis of dengue infection.
ANALISIS KESESUAIAN GAYA BELAJAR MENURUT MBTI (MYERS-BRIGGS TYPE INDICATOR) TERHADAP PENGUASAAN KONSEP KIMIA LOWER ORDER THINKING (LOT) DAN HIGHER ORDER THINKING (HOT)
Authors: Kurniawati Dwi , Ridwan Achmad , Sihombing Sondang N. 
Published: February 2019

Penelitian ini bertujuan untuk menganalisis gaya belajar yang terdapat pada siswa terhadap penguasaan konsep kimia. Penelitian ini dilakukan pada semester genap tahun ajaran 2012/2013 di SMA Negeri 2 Tangerang. Penelitian ini merupakan penelitian deskriptif untuk menemukan kesesuaian antara gaya belajar siswa dengan penguasaan konsep kimia. Metode yang digunakan dalam penelitian ini adalah deskriptif analisis kuantitatif non-parametrik. Data yang dihasilkan dari tahap uji kelayakan instrumen dan tahap pengambilan data penelitian terhadap siswa sehingga diperoleh gaya belajar yang dimiliki subjek penelitian. Kemudian siswa dengan gaya belajar yang konsisten diuji penguasaan konsep kimianya melalui instrumen konsep kimia berdasarkan CCI (Chemical Concept Inventory). Hasil penelitian menunjukkan bahwa terdapat 13 gaya belajar berdasarkan pemetaan gaya belajar MBTI. Hasil pengujian terhadap skor tes konsep kimia menunjukkan bahwa terdapat kesesuaian antara gaya belajar terhadap penguasaan konsep kimia LOT dan HOT. Setiap gaya belajar tidak terdapat perbedaan yang signifikan terhadap penguasaan konsep kimia.
Kata kunci: Gaya Belajar, MBTI, LOT and HOT konsep kimia
Pengembangan Media Pembelajaran Berbasis Chemo-Edutainment Melalui Model Instructional Games Pada Materi Konfigurasi Elektron
Authors: Bahriah Evi Sapinatul , Feronika Tonih , Suharto Hari 
Published: February 2019

Penelitian ini bertujuan untuk menghasilkan media pembelajaran berbasis chemo-edutainment model instructional games pada materi konfigurasi elektron serta mengetahui respon guru dan siswa terhadap media yang dikembangkan. Metode penelitian yang digunakan adalah deskriptif kualitatif melalui tiga tahap, yaitu tahap pra-produksi, produksi, dan pasca-produksi. Data yang diperoleh dianalisis secara deskriptif. Pada tahap pra-produksi dihasilkan perancangan media pembelajaran berbasis chemo-edutainment yang telah diintegrasikan dengan model dari instructional games. Pada tahap produksi dihasilkan media pembelajaran yang telah divalidasi oleh 4 orang dosen. Tahap pasca-produksi media pembelajaran diujicobakan kepada 3 orang guru kimia dan 35 siswa kelas X di salah satu SMA di Tangerang. Produk di respon berdasarkan aspek kualitas isi, kualitas teknis dan kemasan bahan ajar. Hasil penelitian menunjukan bahwa media pembelajaran yang dikembangkan memiliki nilai edukatif dan bersifat menghibur serta menyenangkan bagi penggunanya. Hasil uji coba terbatas mendapatkan skor respon guru sebesar 84,09% termasuk dalam kategori sangat baik. Hasil respon siswa mendapatkan total skor sebesar 82,88% dengan kriteria sangat baik.
Kata Kunci: Media Pembelajaran, Chemo-Edutainment, Instructional Games, Konfigurasi Elektron
Dynamic Stress Analysis of Critical and Cyclic Loads for Production Casing in Horizontal Shale Wells
Authors: Mitchell Robert F. , Zwarich Nola R. , Hunt Hai L. , McSpadden Albert R. , Trevisan Ruggero , Goodman Malcolm A. 
Published: February 2019

Abstract
Recent development of a new dynamic model for tubular stress analysis is now extended to the design challenges and failure modes characteristic of long production casing strings in extended horizontal shale wells. In particular, the issue of cyclic loading due to repeated sequences of multi-stage fracturing has not been addressed until now. The new model provides the ideal means of analysis of cyclic thermal loads as well as critical impact of compression due to initial running friction.
The new dynamic model of tubular stress solves the one-dimensional momentum equation over a time step sequence initiated from the original running of the string into the wellbore. Friction is modeled in a fully history dependent manner, with damping provided naturally by the wellbore fluid viscosity. Local pipe velocity as well as magnitude and orientation of sliding friction is solved at each node with friction aggregated at the connection upset and joint mid-point.
Unconventional shale wells pose critical design challenges especially in regard to the long production casing strings run in extended horizontal or lateral sections. Compressive frictional loads accumulated during running are trapped in the string by cement, packers and the wellhead. Thus the initial load state must fully account for the initial frictional state in order to be realistic and conservative. Hydraulic fracturing at high flow rates and significant pump pressures, including the possibility of screen-out, represents a critical design load on the casing which can also significantly alter the orientation and magnitude of tubular/wellbore frictional contact. The particular phenomenon of repeated fracturing treatements in a multi-stage stimulation compounds the design challenge. Cycles of cold stimulation followed by renewed hot production can lead to unexpected migration of axial loads and localization of critical stresses.
The cyclic nature of loading due to repeated sequences of multi-stage re-fractures and renewed production has not received industry attention due to the unavailability of appropriate models. Lack of adequate models has perhaps resulted in the problem being overlooked. A dynamic model is ideally suited to the analysis of cyclic loads because of its inherent ability to account for a full history of friction loads. The dynamics of loading and unloading are also critical to this new ability to address the design problem. Previous static-based stress models have been unable to provide a comprehensive basis of design.
Determining Wellbore Stability Parameters Using a New LWD High Resolution Ultrasonic Imaging Tool
Authors: Ciuperca Constantin-Laurian , Di Tommaso Davide , Dawber Mike , Tidswell Jonathan 
Published: February 2019

Abstract
A new LWD ultrasonic imager for use in both water- and oil-based muds uses acoustic impedance contrast and ultrasonic amplitude measurements to obtain high-resolution structural, stratigraphic and borehole geometry information. Following extensive testing in the Middle East and the US, this paper presents results from the first European deployment of the new 4.75-in. high-resolution ultrasonic imaging tool.
An ultrasonic transducer, which operates at high frequency, scans the borehole at a high sampling rate to provide detailed measurements of amplitude and traveltime. A borehole caliper measurement is made, based on the time of arrival of the first reflection from the borehole wall. A second measurement detects formation features and tectonic stress indicators from the change in signal amplitude. The amplitude of the reflected wave is a function of the acoustic impedance of the medium. Resulting impedance maps have sufficient resolution to detect sinusoidal, non-sinusoidal and discontinuous features on the borehole wall.
Breakouts, drilling-induced fractures, and tensile zones were used for stress direction determination. Breakout identification was obtained both from amplitude images and oriented potato plot cross sections derived from traveltime measurements.
The orientation of natural fractures is parallel at the maximum stress direction, indicated by drilling-induced fractures and tensile zones. The World Stress Map confirms the maximum stress direction determination.
It was also possible to detect certain key-seat zones and investigate borehole conditions to prevent issues during the subsequent casing job.
The new LWD ultrasonic imaging technique represents an important alternative to density and water-based mud resistivity imaging, which has several limitations. Unlike the resistive imaging LWD tool that is very sensitive to standoff, the higher tolerance of the ultrasonic imaging tool enables the amplitude and traveltime ultrasonic images to contain fewer unwanted artifacts.
Calculating a Tortuosity Index Metric Using Machine Learning Techniques
Authors: Noshi C. I. , Schubert J. J. 
Published: February 2019

Abstract
Extremely tortuous wells pose many wellbore quality repercussions and poorly affects several well drilling and production-based operations. To date, many indices have been developed for accurate tortuosity identification, but few have had the capability to efficiently mirror and quantify micro-tortuosity in real-time. This study applies a previously-proposed novel algorithm studied by some researchers to quantify well trajectory tortuosity using simple and readily available survey data. The process is followed and validated using twenty wells located in the Permian Basin.
Python code was written to identify proper inflection points at the mid-point of the curve turns and using inclination and azimuth indices, a 3D overall TI index was generated for each well. The technique is inspired from the discipline of ophthalmology, specifically a method to determine tortuosity from retinal blood vessels.
The approach successfully produced a tortuosity metric with three different risk categories characterizing three ranges of the index. The indices generated were matched against operator reports of drilling incidents and NPT. The methodology matched highly tortuous wells with greater downhole tool failures rates ranking it in the high-risk zone.
Simulated Drilling Testing of an Active Wellbore Sealing System on a Full-Scale Test Rig
Authors: Johnson Austin , Nichols Jess , Ameen Kareem , Fraczek Justin 
Published: February 2019

Abstract

Objectives and Scope
An active wellbore sealing system has undergone simulated drilling tests in a full-scale, purpose-built test rig facility. The active wellbore sealing system contains wellbore pressure during all drilling operations with an active, direct-hydraulic control system to actuate the dual non-rotating seal sleeve elements. The test rig facility enables simulated drilling testing including the use of drilling mud, simultaneous drillpipe stripping and rotation, production topside equipment, and application of wellbore pressure.
The active wellbore sealing system test program operates the equipment under realistic field conditions and enables control parameter optimization. Test procedures have been developed based on historical well data with careful consideration given to the application of test results. Analysis of the test data is provided and discussed.

Methods, Procedures, Processes
This paper shares test results from the active wellbore sealing system test program. An overview of the system and test environment will be shared. Test procedures and technical considerations will be discussed. Data and analysis from the test program will be shared.

Results, Observations, Conclusions
The active wellbore sealing system offers distinct operational advantages over passive systems in deepwater. An active control system enables extended seal life and active seal integrity management. Rigorous simulated drilling tests provide a technical basis for comparison to real wells. Seal element condition monitoring allows the rig to replace the seal assembly only as required, saving rig time.

Novel and Additive Information
The active wellbore sealing system is operated with the chamber pressure between the seal elements higher than the wellbore pressure, forming three mechanisms to ensure wellbore pressure is contained. Further, testing demonstrates that minimal human input is required to operate the system.
An Active Return Flowline Sensor for Onshore Drilling Rigs
Authors: Lambie Patrick M , Sampaio Jorge H 
Published: February 2019

Abstract
This paper presents the concept, construction, and test of a small scale volumetric flow rate sensor using the simple principle of mass conservation with the purpose of accurately measure the flow return in onshore drilling operations. The results demonstrate that the solution is accurate, extremely sensitive to flow variations, and capable of identifying and measuring flow variations caused by influx or loss of fluids in the wellbore.
The solution uses the principle of mass conservation and is limited to low compressibility fluids which corresponds to the larger portion of onshore operations in US and abroad. Under this assumption, the principle of mass conservation is replaced by volume conservation, which allows the appropriate measure of the return flow rate. The principle is realized using off-the-shelf equipment. The solution is installed as a bypass of the regular flowline on conventional drilling rigs and does not require the use of special equipment like rotating head and expensive Coriolis systems.
The small-scale sensor system constructed and tested is capable of handling up to 40 gpm with a footprint of about 4 ft2. Considering the scale to handle typical flow rates up to 1,000 gpm the size of the equipment in real scale is roughly in the linear ratio of three, which corresponds to a footprint of 36 ft2 (3’x12’), compatible with the available area between the rig structure and the mud pits. Several tests indicate that the system can sense changes in flow rate in the range of ±1% of the maximum nominal flow rate in few seconds after a flow perturbation/variation occurs and obtain accurate readings of the actual flow rate in less than 30 s (5 s to identify, 10 s to measure, 15 s to stabilize). This means that the time to identify influx of gases or loss of fluid is reduced substantially compared to traditional differential methods used in onshore rigs, and are comparable to solutions using Coriolis methods, at a fraction of the cost. The system can also provide a real-time measurement of the return fluid density. The use of this system in onshore rigs brings to these scenarios the same level of safety as the case of offshore operations using Coriolis systems.
This new measuring system uses sound principles and is implemented using off-the-shelf equipment, although for higher efficiency and optimized reliability the use of a design-for-fit equipment is advisable. The invaluable benefit is to bring the same level of safety as the case of more expensive systems usually affordable only in offshore scenarios. By reducing substantially the influx volume of kicks or the volume of fluid lost before appropriate actions are taken makes this system economically and environmentally attractive.
Cementing an Irregular Annulus Geometry: Full-Scale Experiments and 3D Simulations
Authors: Skadsem Hans Joakim , Kragset Steinar , Sørbø Jostein 
Published: February 2019

Abstract
Primary cementing involves displacing the drilling fluid from the annulus outside the casing and replacing it by cement slurry. Incomplete displacement can compromise zonal isolation, impacting both productivity and abandoning costs of the well. Washouts and similar irregularities are often generated during drilling, but their effect on displacement and cementing is poorly understood. We report results from full-scale cementing experiments and numerical simulations for an eccentric annulus geometry with a washout.
Inclined annulus test assemblies were constructed by placing 7-in tubing inside 9 5/8-in casing and letting the inner tubing rest on the low side of the casing, supported by the tubing collars. The geometric irregularity is in the form of a 16-in casing segment welded onto the assemblies to represent a local washout. The assemblies were cemented by displacing a water-based spacer by denser, more viscous conventional cement slurry. Numerical simulations of cement placement have been performed using an open-source computational fluid dynamics platform.
The quality of the hardened cement was investigated by leakage testing followed by visual inspection of the annulus after cutting the assemblies open at designated positions. Leakage paths are visible along the interface between cement and the outer wall along the upper side of the annulus. There is no obvious contamination of the cement after the washout due to mixing with the water-based spacer. Numerical simulations are in good qualitative agreement with experimental observations, including correctly predicting the presence of residual spacer fluid inside the washout.
The experiments were performed at modest flow rates so the density difference between the fluids will largely compensate for downward casing eccentricity in the regular part of the assemblies. Buoyancy becomes even more pronounced inside the washout due to lower axial fluid velocity, resulting in strong downward slumping of the dense fluid and a fully three-dimensional displacement flow.