bluuebunny/crossref_metadata_2025 huggingface dataset:
COMUNICAÇÃO INTEGRADA EM UMA UNIVERSIDADE PÚBLICA: um modelo para análise situacional na perspectiva da teoria da comunicação integrada e da análise de redes sociais
Authors: Holanda Ana Emília Galvão , Brandão Pâmela de Medeiros
Published: August 2019

Esse artigo apresenta um modelo para análise situacional da comunicação integrada em uma Universidade pública fundamentado na perspectiva da Teoria da Comunicação Organizacional Integrada e da Análise de Redes Sociais. O modelo proposto comporta conceitos, finalidades e procedimentos para o aprimoramento dos processos da comunicação organizacional deste tipo de organização pública. Trata-se de um estudo teórico, desenvolvido por meio de uma pesquisa bibliográfica que considera as especificidades da comunicação pública, tomando como parâmetro de referência um composto da comunicação organizacional integrada em uma Universidade pública, formado por três dimensões: Comunicação Institucional, Comunicação Interna e Comunicação Relacional, o qual é adaptado do composto desenvolvido por Kunsch (2003).
 
PALAVRAS-CHAVES: Comunicação Organizacional Integrada; Comunicação Pública; Análise de Redes Sociais.
 
 
ABSTRACT
This article presents a model for situational analysis of integrated communication in a public university based on the perspective of the Theory of Integrated Organizational Communication and Analysis of Social Networks. The proposed model includes concepts, purposes and procedures for the improvement of organizational communication processes of this type of public organization. This is a theoretical study, developed through a bibliographical research that considers the specificities of public communication, taking as reference benchmark a composite of organizational communication integrated in a public university, formed by three dimensions: Institutional Communication, Internal Communication and Relational Communication, which is adapted from the compound developed by Kunsch (2003).
 
KEYWORDS: Integrated Organizational Communication; Public Communication; Analysis of Social Networks.
 
 
RESUMEN
Este artículo presenta un modelo para análisis situacional de la comunicación integrada en una Universidad pública fundamentada en la perspectiva de la Teoría de la Comunicación Organizacional Integrada y del Análisis de Redes Sociales. El modelo propuesto comporta conceptos, finalidades y procedimientos para el perfeccionamiento de los procesos de la comunicación organizacional de este tipo de organización pública. Se trata de un estudio teórico, desarrollado por medio de una investigación bibliográfica que considera las especificidades de la comunicación pública, tomando como parámetro de referencia un compuesto de la comunicación organizacional integrada en una Universidad pública, formado por tres dimensiones: Comunicación Institucional, Comunicación Interna y Comunicación Relacional, el cual es adaptado del compuesto desarrollado por Kunsch (2003).
 
PALABRAS CLAVES: Comunicación Organizacional Integrada; Comunicación pública; Análisis de Redes Sociales.
RESIDÊNCIA ARTÍSTICA: Cartografias inventivas e o Devir-Planta
Authors: Leite Amanda Mauricio Pereira
Published: August 2019

Apresento resultados da Residência Artística: Cartografias inventivas e o devir-planta, como um desdobramento da pesquisa de Pós-Doutorado realizada no Departamento de Educação, Conhecimento, Linguagem e Arte na Universidade Estadual de Campinas (UNICAMP), sob supervisão de Wenceslao M. de Oliveira Júnior. Vimos na residência artística possibilidades de alterar sentidos e pensamentos. Uma oportunidade de também fomentar criações e projetos que encurtem a nossa distância geográfica e nos aproximem do fazer artístico a partir da obra fotográfica de Marli Wunder.
 
PALAVRAS-CHAVE: Fotografia. Residência Artística. Cartografia. Devir-planta. Marli Wunder.
 
 
ABSTRACT
Here I present results of the Artistic Residence: Inventive Cartographies and the becoming-plant, as an unfolding of the postdoctoral research carried out in the Department of Education, Knowledge, Language and Art at the State University of Campinas (UNICAMP) under the supervision of Wenceslao M. of Oliveira Júnior. We see in the artistic residence possibilities of changing senses and thoughts. An opportunity to also foster creations and projects that shorten our geographic distance and bring us closer to artistic making from the photographic work of Marli Wunder.
 
KEYWORDS: Photography. Artistic residence. Cartography. Devir-plant. Marli Wunder.
 
 
RESUMEN
En el presente trabajo se analizan los resultados obtenidos en el análisis de los resultados obtenidos en el análisis de los resultados obtenidos en el estudio. de Oliveira Júnior. Vemos en la residencia artística posibilidades de cambiar sentidos y pensamientos. Una oportunidad de también fomentar creaciones y proyectos que acortan nuestra distancia geográfica y nos acerquen al hacer artístico a partir de la obra fotográfica de Marli Wunder.
 
PALABRAS CLAVE: Fotografía. Residencia Artística. Cartografía. Convertirse en plantas. Marli Wunder.
AVALIAÇÃO QUADRIENAL DA CAPES: SENTENÇA OU AUXÍLIO
Authors: Adrian Alessandra Bonfim Bacelar de Abreu , Porto Junior Francisco Gilson Rebouças
Published: August 2019

A região Norte do país sempre esteve em desvantagens quando o assunto é formação superior, os dados da CAPES revelam que o número de doutores e mestres ainda não são suficientes para suprir as demandas principalmente em se falando na oferta de novos programas de pós-graduação, onde são feitos verdadeiros malabarismos, juntando áreas afins para conseguir formar quadro de docentes. E se é difícil para os cursos de exatas, saúde, como será para humanas, mais especificamente, comunicação. Esse artigo mostra um panorama atual dos programas existentes na região norte do país, tendo como referência principal a Avaliação Quadrienal realizada junto as IES e registradas via Plataforma Sucupira e onde os últimos dados divulgados são do ano de 2017.
 
PALAVRAS-CHAVE: Formação; Comunicação, PPGCom; Avaliação Quadrienal; Região Norte.
 
 
ABSTRACT
The Northern region of the country has always been at a disadvantage when it comes to higher education, CAPES data show that the number of doctors and masters is still insufficient to meet the demands, mainly in terms of offering new ones graduate programs, where they are made real juggling, joining related areas to achieve a teaching staff. And if it is difficult for courses of exact, health, as will be for human, more specifically, communication. This article shows a current panorama of the existing programs in the northern region of the country, having as main reference the Quadrennial Evaluation carried out with the HEIs and registered via the Platform Sucupira and where the latest data released are from the year 2017.
 
KEYWORDS: Formation; Communication, PPGCom; Quadrennial Evaluation; North region.
 
 
RESUMEN
La región Norte del país siempre estuvo en desventajas cuando el asunto es formación superior, los datos de la CAPES revelan que el número de doctores y maestros aún no son suficientes para suplir las demandas principalmente en hablar de la oferta de nuevos programas de postgrado, donde se hacen verdaderos malabarismos, juntando áreas afines para conseguir formar cuadro de docentes. Y si es difícil para los cursos de exacta, salud, como será para las personas, más específicamente, comunicación. Este artículo muestra un panorama actual de los programas existentes en la región norte del país, teniendo como referencia principal la Evaluación Quadrienal realizada junto a las IES y registradas vía Plataforma Sucupira y donde los últimos datos divulgados son del año 2017.
 
PALABRAS CLAVE: Formación; Comunicación, PPGCom; Evaluación cuatrienal; Región del norte.
Atypical Dermatophytosis in 12 North American Porcupines (Erethizon dorsatum) from the Northeastern United States 2010-2017
Authors: Needle David , Gibson Robert , Hollingshead Nicholas , Sidor Inga , Marra Nicholas , Rothenheber Derek , Thachil Anil , Stanhope Bryce , Stevens Brian , Ellis Julie , Spanswick Shelley , Murray Maureen , Goodman Laura
Published: August 2019

Twelve wild North American Porcupines (Erethizon dorsatum) were diagnosed with dermatopathies while being cared for at two wildlife rehabilitation clinics. Biopsy and necropsy were performed on 7 and 5 animals respectively. Atypical dermatophytosis was diagnosed in all cases. Lesions consisted of diffuse severe epidermal hyperkeratosis and mild hyperplasia, with mild lymphoplasmacytic dermatitis, and no folliculitis. Dermatophytes were noted histologically as hyphae and spores in hair shafts, and follicular and epidermal keratin. Trichophyton sp. was grown in 5/6 animals where culture was performed, with molecular diagnosis of Arthroderma benhamiae / Trichophyton mentagrophytes in these 5 cases. Metagenomic analysis of formalin-fixed paraffin-embedded tissue samples from 3 cases identified fungi from 17 orders in phyla Basidiomycota and Ascomycota. Alteration of therapy from ketaconazole, which was unsuccessful in 4 of 5 early cases, to terbinafine or nitraconazole lead to resolution of disease and recovery to release in four subsequent animals. In all, 6 animals were euthanized or died due to dermatopathy, no cases resolved spontaneously, and 6 cases resolved with therapy. The work we present demonstrates an atypical lesion and anatomical distribution due to dermatophytosis in a series of free-ranging wild porcupines and successful development of novel techniques for extraction and sequencing nucleic acids from fungus in archival formalin-fixed paraffin-embedded animal tissue.
Feeding Artemia nauplii enriched with the probiotic bacterium Bacillus subtilis improved growth performance, survival and digestive enzyme activity of Clarias batrachus (Linnaeus, 1758) larvae
Authors: Kamble S.P. , Sahu A.K. , Mohanty S. , Sahoo S.K. , Murmu K. , Prakash Chandra , Chadha N.K.
Published: August 2019

Clarias batrachus (Linnaeus, 1758) larvae were subjected to different modes of probiotic (Bacillus subtilis) administration such as:  T1: feeding Artemia nauplii enriched with B. subtilis; T2: feeding enriched Artemianauplii + addition of B. subtilis in water  and T3: addition of B. subtilis in water alone, for a period of 14 days. A control group (T0) with no probiotic administration was also maintained. On termination of the experiment, probiotic supplemented through enriched Artemia nauplii along with addition in  water (T2) yielded significantly (p<0.05) higher length,  weight, weight gain, specific growth rate and survival compared to control (T0) and T3 groups. All these parameters did not differ significantly (p>0.05) between T1 and T2. Similar trend was observed in the case of total gut bacterial count and digestive enzyme activity. The highest (p<0.05) digestive enzyme activity of protease, lipase and amylase   were recorded in T2, while no significant (p>0.05) difference was observed between T2 and T1. The present study reiterated the advantage of B. subtilis, and its administration through enriched Artemia nauplii which could be a promising supplementation mode during C. batrachus larval rearing.
Cymothoa indica Schioedte and Meinert, 1884 (Crustacea: Isopoda: Cymothoidae) infestation in cage-cultured Asian seabass Lates calcarifer (Bloch, 1790) from the south-west coast of India
Authors: Sukumaran K. , Kailasam M. , Jithendran K.P.
Published: August 2019

Infestation of the isopod parasite Cymothoa indica  in Asian seabass Lates calcarifer (Bloch, 1790) fingerlings stocked in low volume cages is reported here. Hatchery produced seabass fry, reared to fingerling size (average size, 7±1 g and 63±12 mm) were used for stocking cages in Ashtamudi Lake, Kerala, south-west India. Instances of mortality were first observed on the 25th day of culture (DOC). By the 35th DOC, cumulative mortality of 84.6% was recorded. Intensity of parasitic infestation was found to be one parasite per fish. Parasites were observed to be latched to the tongue of the host fish. Reddening of buccal cavity, dark pigmentation, tongue degeneration/replacement were observed in the affected fish. On the 35th DOC, surviving fish in the cages were examined and the prevalence of C. indica was 53.08% in the remaining live fish. Though experimental infestation of Asian seabass by C. indica has been reported previously under laboratory conditions, this forms the first  report on infestation of C. indica in cage-cultured Asian seabass.
Antibiotic resistance pattern and its correlation to the presence of tdh gene and CRISPR-Cas system in Vibrio parahaemolyticus strains isolated from seafood
Authors: Baliga Pallavi , Shekar Malathi , Ahamed Shaik Thahur , Venugopal M. N.
Published: August 2019

Vibrio parahaemolyticus is a pathogen native to the aquatic environment. In this study, 46 environmental V. parahaemolyticus isolates were subjected to a correlational analysis to find the association between their antimicrobial susceptibility pattern, prevalence of CRISPR-Cas system and thermostable direct hemolysin (tdh) gene. Antibiotic resistance profiling against eleven antibiotics revealed the isolates to be multidrug resistant. Isolates exhibited highest resistance to vancomycin (97.8%) followed by ampicillin (91.3%), cefotaxime (69.6%), ceftazidime/clavulanic acid (54.4%), ceftazidime (45.7%) and gentamicin (39.1%). CRISPR loci and tdh gene were detected in 47.83 and 58.7% of strains respectively. No significant correlation was observed between antibiotic resistance to presence of CRISPR, except in the case of gentamicin wherein, a negative correlation was seen (r=-0.272, p<0.10). Similarly, tdh did not correlate to antibiotic resistance. Seventeen strains in this study harboured the CRISPR loci as well as tdh gene, the association of which was found to be statistically significant.
Decarbonizing Anthropogenic Activity: The Oil and Gas Industry is a Major Component of the Solution
Authors: Hastings Astley , Smith Pete
Published: August 2019

The major challenge facing society in the 21st century is to improve the quality of life for all citizens in an egalitarian way, by providing sufficient food, shelter, energy and other resources for a healthy meaningful life, whilst at the same time decarbonizing anthropogenic activity to provide a safe global climate. This means limiting the temperature rise to below 2°C. Currently, spreading wealth and health across the globe is dependent on growing the GDP of all countries. This is driven by the use of energy, which until recently has mostly derived from fossil fuel, though a number of countries have shown a decoupling of GDP growth and greenhouse gas emissions from the energy sector through rapid increases in low carbon energy generation. Nevertheless, as low carbon energy technologies are implemented over the coming decades, fossil fuels will continue to have a vital role in providing energy to drive the global economy. Considering the current level of energy consumption and projected implementation rates of low carbon energy production, a considerable quantity of fossil fuels will still be used, and to avoid emissions of GHG, carbon capture and storage (CCS) on an industrial scale will be required. In addition, the IPCC estimate that large scale GHG removal from the atmosphere is required using technologies such as Bioenergy CCS to achieve climate safety. In this paper we estimate the amount of carbon dioxide that will have to be captured and stored, the storage volume and infrastructure required if we are to achieve both the energy consumption and GHG emission goals. By reference to the UK we conclude that the oil and gas production industry alone has the geological and engineering expertise and global reach to find the geological storage structures and build the facilities, pipelines and wells required. Here we consider why and how oil and gas companies will need to morph into hydrocarbon production and carbon dioxide storage enterprises, and thus be economically sustainable businesses in the long term, by diversifying in and developing this new industry.
An Increasing Focus on the UK Oil & Gas Industry's Emissions Management
Authors: Thorne Robert , Mittal Raaghav
Published: August 2019

As a result of the 2016 Paris agreement, the challenge of climate change and the imperative of moving to a low carbon economy has intensified. This challenge has been added to the traditional objectives of affordable and secure energy sources. These three criteria are the basis for the Energy Transition. Increasingly, investors, consumers and policy makers are looking to energy businesses to reflect all these criteria as the basis of their company culture and objectives.

This paper looks to explore opportunities for the UK oil and gas industry to further align itself with the drivers set out above and continue to promote investment into a sector that is key to delivering the Energy Transition:

Improved communication of carbon reduction and mitigation efforts at both a national and global level Increased collaborative efforts aimed at reducing emissions resulting from exploration and production offshore The potential for UKCS oil & gas companies’ involvement in carbon mitigation and storage

Over recent years, the offshore UKCS oil and gas sector has focused on improving cost efficiency in its offshore operations. This implies a commitment to continuously improve environmental performance despite the challenges of doing so in a maturing oil and gas basin, where maximising economic recovery from fields requires greater effort. Notwithstanding these challenges, the overall long-term trends in environmental performance are improving as a result of efforts by the industry.

Moving forwards, the benefits of effective emissions management will continue to intensify, beyond the regulatory requirements of environmental protection, as a result of two key drivers:

To maintain investor and public confidence – reducing both the carbon footprint of operations and carbon intensity of products used by consumers, will help position companies for a lower carbon economy. The business case - EU ETS Phase IV is modelled to cost the sector £2.2 billion from 2021 to 2030 as the cost of allowances is projected to increase combined with the reduction in free allowances. Therefore, reducing emissions at installations will continue to be imperative for improved environment performance as well as the continued economic viability of the installation.

The sector must therefore continue to adapt to these ongoing fundamental changes that are taking place in energy supply more widely. As with any industry, businesses need to respond to shifting economic and societal demands and the consequent changes in energy needs. Hence, the effective management of emissions must proliferate through both operations (exploration, production and transportation of hydrocarbons), and use of the products delivered.
Depositional Behaviour of Highly Macro-Crystalline Waxy Crude Oil Blended with Polymer Inhibitors in a Pipe with a 45-Degree Bend
Authors: Makwashi Nura , Barros Delcia Soraia , Sarkodie Kwame , Zhao Donglin , Diaz Pedro A.
Published: August 2019

Production, transportation and storage of highly waxy crude oil is very challenging. This is because they are usually characterised by high content of macro-crystalline waxes, predominantly consisting of n-alkanes (C18 to C36) that which could cause costly deposition within the wellbore and production equipment. The accumulation of deposited wax can decrease oil production rates, cause equipment breakdown, and clog the transport and storage facilities. Currently, different polymeric inhibitors have been utilised in the oil and gas field to mitigate and prevent wax deposition. However, as of today, there is no distinctive wax inhibitor that could work effectively for all oil fields. One of the objectives of this work is to study the efficacy of a blended commercial wax inhibitor - pour point depressant on wax deposition mitigation in a flow rig designed with 0 and 45-degree bends in the pipeline.

Standard laboratory techniques using high-temperature gas chromatography (HTGC), rheometer rig, polarized microscope and elution chromatography were employed to obtain n-paraffin distribution, oil viscosity, WAT, pour point and SARA fractions. Series of experimentation were carried out with and without the inhibitor in a straight pipe test section. The severity of wax deposition in the pipeline built-in with a 45-degree bend is compared with a straight pipe. The blended inhibitor was tested at concentrations of 500, 1000, and 1500-ppm, under laminar and turbulent conditions. The crude oil sample was found to be naturally waxy with wax content of 19.75wt%, n-paraffin distributions ranges from C15-C74, WAT and pour point of 30°C and 25°C respectively. The severity of wax deposition in the test section is 43% higher in 45-degree bend compared to straight pipe. However, the severity of the deposition was reduced to 12.3% at extremely low temperature and flow rate. Nonetheless, better inhibition performance was achieved at 25 and 30°C. The wax thickness was reduced from δwax ≈ 0.36mm at 5 l/min to δwax ≈ 0.132mm at 7 l/min at constant coolant temperature (25°C) and 1500-ppm, whereas, no wax deposition was observed at 11 l/min. Mechanisms such as molecular diffusion due to frictional pressure losses, shear dispersion and gravity settling due to momentum change and hydrostatic, alongside with thermal difference are the main drivers for wax deposition in both straight and bend pipe. Whereas, the interaction mechanisms such as the nucleation, alongside with adsorption, co-crystallization, and solubilisation between the new blended inhibitor and the wax crystals provide an improved inhibition performance in the system even at extreme cases.
Solutions for Seal Gas Leakages Recovery in Methane Compression: Integration into Processing Lines or Gas Valorization Systems
Authors: Conforti Filippo , Scarbolo Luca , Cipriani Sergio , Falsini Matteo
Published: August 2019

Recovery and valorization of wasted gas associated to methane processing (i.e. leakages from rotating equipment and flared gas) has usually been avoided due to the inherently limited amount of gas of these streams. Moreover, the technical complexities are further enhanced when applied to aging infrastructures and old compression unit designs, making the solution complex and less cost-effective.

However, emission control regulation is progressively limiting the atmospheric release of gases from the hydrocarbon production and processing. These requirements have triggered the development of new technical solutions to limit even small gas streams typically neglected in the past. Typical examples of small leakages tolerated in gas processing are associated with the Dry Gas Seals (DGS) primary vents. The limited amount of gas released did not justify a recovery system, leaving flaring as the only viable option.

In this paper, the technical solutions for compressor DGS primary vent recovery are presented, with further discussion on the integration into the gas process. Financial sustainability of the solutions is also presented, with the analysis of two selected cases. The presented solutions are designed to reflect the positive impact of wasted gas reduction, contributing to reaching environmental sustainability targets in oil and gas.
Integrating First Principles-Based Approaches into the Routine Design Practice for Offshore Consequence Analysis and Operational Troubleshooting Assessments
Authors: Plikas Tom , Shah Umesh , Ghorbani Hamid , Sharpe Iain , Massey Kent
Published: August 2019

Significant advancements in physics-based model development, software workflow practices, multi-core processing and cost-effective cloud computing has enabled the adoption of high fidelity, three-dimensional (3D) modeling such as computational fluid dynamics (CFD), finite element analysis (FEA), and other first principles-based analyses into normal engineering design practices. Historically, integration of these tools into the standard engineering workflow was challenging due to the excessively long turnaround times to deliver any results.

Three Case Studies are subsequently presented where 3D modeling analysis was used early and seamlessly in the engineering design process to solve problems related to consequence analysis and equipment operational performance:

Case 1) Risk assessment of pilot flame extinguishment due to inert gas discharge from the flare of an FPSO,

Case 2) Jet dispersion analysis from HP/LP flare to assess hydrocarbon and H2S concentrations at critical locations on the platform, including results comparison between CFD results and a conventional dispersion tool – Flaresim, and,

Case 3) Solving a fatigue induced cracking problem on the cooling water circuit of a heat exchanger using an integrated workflow consisting of CFD modelling of the cooling water, stress analysis using FEA, and structural integrity assessment per ASME BPVC VIII Division 2.

The modelling results from these case studies were generated in timeframes similar to those using conventional engineering calculation methods, and thus allowed for prompt integration into the engineering design process without impacting project schedules and delivery. Moreover, the costs to perform these modelling analyses were not substantially greater than the costs associated with conventional calculation methods, thereby providing high value to the engineering projects.
Developing Nanocomposite Gels from Biopolymers for Leakage Control in Oil and Gas Wells
Authors: Yudhowijoyo Azis , Rafati Roozbeh , Sharifi Haddad Amin , Pokrajac Dubravka , Manzari Mehrdad
Published: August 2019

Crosslinked polymer gels have been widely used to overcome water and gas coning problem in the petroleum industry. Recently, nanoparticles are identified to have a potential of reinforcing the polymer gel systems by improving physical bonding and heat transfer properties in the gel structure. In this study, silicon dioxide and aluminium oxide nanoparticles were introduced to xanthan gum polymers that were crosslinked by chromium (III) acetate, to create polymeric nanocomposite gels with higher shear strengths. The gelation time and gel strength have been selected as main parameters to evaluate the effect of nanoparticle types and concentrations on the nanocomposite gels performance. The gelation time is measured until the onset of gelation or the moment when apparent viscosity starts to increase at 60°C. The gel strength is represented by the storage modulus (G’) after 24 hours of gelation at 60°C. Both parameters were measured by a rheometer, through constant shear rate and oscillatory tests respectively.

The addition of 1000 and 10000 ppm of silicon dioxide (SiO2) nanoparticles into a solution of 6000 ppm xanthan gum polymers that are crosslinked with 50000 ppm chromium (III) acetate caused insignificant changes in gelation time. Similar result was also reported when 1000 and 10000 ppm of aluminium oxide (Al2O3) nanoparticles was introduced into the polymer system. This suggests that when SiO2 and Al2O3 nanoparticles are introduced to xanthan/chromium (III) Acetate system for field application, no additives would be required to prolong or shorten gelation time to counter the nanoparticles addition. To analyse the gel strengths, the results from the oscillatory test were averaged throughout the frequency range, and it was shown that the addition of SiO2 nanoparticles decreases the average storage modulus from 75.1 Pa without nanoparticles, to 72.3 Pa at the nanoparticles concentration of 1000 ppm. However, the average storage modulus increased to 83.0 Pa and 94.7 Pa at higher nanoparticles SiO2 concentrations of 5000 ppm and 10000 ppm. The same trend was observed for the nanocomposite gels that were produced by Al2O3 nanoparticles. Similarly, the storage modulus decreased initially to 70.8 Pa at the concentration of 1000 ppm, then it increased to 89.9 Pa and 109.4 Pa at nanoparticles concentrations of 5000 pm and 10000 ppm, respectively. Hence, the nanoparticle-enhanced biopolymer gels showed insignificant changes of gelation time, and at the same time, they demonstrated up to 45% improvements in the gel strength properties when the nanoparticles concentration is higher than 5000 ppm.

In conclusion, the nanocomposite gels demonstrated reinforced bonding properties and showed higher gel strengths that can make them good candidates for leakage prevention from gas wells and blocking of water encroachments from aquifers into the wells.
A Fractal Approach to the Modelling and Simulation of Heterogeneous and Anisotropic Reservoirs
Authors: Glover Paul W. , Lorinczi Piroska , Al-Zainaldin Saud , Al-Ramadhan Hassan , Sinan Saddam , Daniel George
Published: August 2019

New reservoirs are increasingly more heterogeneous and more anisotropic. Unfortunately, conventional reservoir modelling has a resolution of only about 50 m, which means it cannot be used to model heterogeneous and anisotropic reservoirs effectively when such reservoirs exhibit significant inter-well variability at scales less than 50 m. This paper describes a new fractal approach to the modelling and simulation of heterogeneous and anisotropic reservoirs. This approach includes data at all scales such that it can represent the heterogeneity of the reservoir correctly at each scale.

Three-dimensional Advanced Fractal Reservoir Models (AFRMs) can be generated easily with the appropriate code. This paper will show: (i) how 3D AFRMs can be generated and normalised to represent key petrophysical parameters, (ii) how these models can be used to calculate permeability, synthetic poro-perm cross-plots, water saturation maps and relative permeability curves, (iii) the effect of altering controlled heterogeneity and anisotropy of generic models on fluid production parameters, and (iv) how AFRMs which have been conditioned to represent real reservoirs provide a much better simulated production parameters than the current best technology.

Results of generic modelling and simulation with AFRMs show how total hydrocarbon production, hydrocarbon production rate, water cut and the time to water breakthrough all depend strongly both on heterogeneity and anisotropy. The results also show that in heterogeneous reservoirs, the best production data is obtained from placing both injectors and producers in the most permeable areas of the reservoir – a result which is at variance with common practice. Modelling with different degrees and directions of anisotropy shows how critical hydrocarbon production data depends on the direction of the anisotropy, and how that changes over the lifetime of the reservoir.

We have developed a method of fractal interpolation to condition AFRMs to real reservoirs across a wide scale range. Comparison of the hydrocarbon production characteristics of such an approach to a conventional krigging shows a remarkable improvement in the modelling of hydrocarbon production when AFRMs are used; with AFRMs in moderate and high heterogeneity reservoirs returning values always within 5% of the reference case, while the conventional approach often resulted in systematic underestimations of production rate by over 70%.
Pressure Safety Valve RBI - Using Half a Billion Hours of Data
Authors: Morgan John
Published: August 2019

This paper explains how half a billion hours of service data for pressure safety valves (PSVs) can be analysed and presented to allow optimisation of maintenance intervals and manage the inspection of PSVs. The large amount of data creates challenges, but also opportunities for an enhanced methodology expandable to other equipment types.

A methodology has been developed that uniquely combines qualitative and quantitative analysis. The latter ensures that the risk from PSV failure is determined and below set criteria. The drawback with this criterion alone would be that it is based on average data from a large set of PSVs and the average may not be applicable everywhere especially if failures are not random, but have an underlying, potentially unknown, cause. Therefore, each PSV is also qualitatively assessed. To bridge the gap between individual PSVs and "large sets", groups of PSVs are also identified in the methodology and data for them is collated and used within the whole group; the careful analysis required to define the groups, which must have similar properties, or performance, is described. This multi-layered assessment gains the most information possible from the data. The key part of the process is also to present this data for review and analysis, and this is achieved through a digital, cloud-based interactive dashboard.

The analysis has shown that maintenance intervals can be reduced significantly, but simultaneously risk reduced by concentrating effort on the worst-performing PSVs. Not least, a dashboard presentation of the risk-based inspection (RBI) showing the calculated inspection interval, changes to the intervals and failures allows a clear picture to be developed of PSV performance. Maintenance planning also becomes easier and information required for deferral assessments is available in seconds rather than hours. The analysis shows where poorer performance can occur, this is often applicable across different assets. The way in which the approach can be expanded to other equipment types will be described.

The novel approach in the assessment is the multi-layered combination of qualitative and quantitative analysis and the presentation of a large amount of data through the cloud to be used by maintenance teams, technical authorities and operators. It also shows the benefits of collecting half a billion service hours of data and that this need not be an onerous task.
Remote Sensing for Leak Detection and Quantification
Authors: Amin Laith
Published: August 2019

Offshore oil and gas installations are (by their nature) located in remote locations that are both difficult and costly to access. While such challenges exist, the operate & maintain requirements associated with such assets are consistent and must be addressed, requiring operators to identify the most efficient form of service to reduce staffing levels, risk and cost.

Offshore hydrocarbon production assets commonly incorporate equipment and processes that can lead to significant (fugitive) gas emissions. The consequences are both economic and social (environmental) in nature, requiring operators to perform emissions surveys with the objective of leak identification and remediation within the shortest possible timeframe. The frequency of this activity is naturally limited and must be balanced with the staffing and operating needs of the broader facility, which in-turn can lead to sub-optimal leak detection to fix timing and reliability.

Addressing the three key challenges of access productivity, detection reliability and results quantification, Worley has developed a remote sensing platform that incorporates the use of productive remote access equipment such as unmanned aerial vehicles (UAV) and in-situ monitoring, with machine based emissions detection and algorithmic quantification to provide a solution that allows the operator to increase survey frequency, obtain more reliable results at lower cost, and perform the work in a manner consistent with safe and low-risk operations.

In both testing and field deployments, the results have provided for significant reductions in both false positive and negatives and have produced datasets that allow for accurate indications of greenhouse gas reduction via comparison of volumetric emissions before and after leak repair activity has taken place.

The technology is largely mathematical, utilizing coded routines for machine learning to perform gas detection under (initially) supervised modeling conditions, and algorithmic gas dispersion models for further emission quantification. The performance of the survey is typically carried out through the integration of existing, proven manufactured sensing equipment across several types of UAV or in-situ monitors which collect field data for transmission to a cloud-based portal which further processes the results.

The approach has been shown effective in accessing hard or costly to reach areas, improving survey productivities, while the data processing and quantification allows the operator to benefit from improved measurability and prioritize leak repair accordingly.
Effect of ambient temperature on incidence of tuberculosis and effect modification by meteorological factors in Jinan, China during 2012-2015: A time-series analysis
Authors: Ye Runze , Cui Liangliang , Zhou Jingwen , Wang Meihua , Jia Chongqi , Ruan Shiman
Published: August 2019

Objective For assessing the nonlinearity and delayed effect of temperature on incidence of tuberculosis and effect modification by meteorology factors, daily data on meteorological factors, air pollutants and incidence were obtained in Jinan, China, from 2012 to 2015.Methods A distributed lag non-linear model (DLNM) combined with quasi-Poisson regression model was employed to assess the associations. We further built a series of weather-stratified models to assess the effect modification by meteorological factors.Results The correlation between tuberculosis cases and daily average temperature (Tmean) was negatively nonlinear with a delayed effect. At the current day (lag 0), the increase of Tmean decreased the risk of tuberculosis incidence; over lag 0-70 days, the decrease of low Tmean and the increase of the high Tmean both indicated the increased risk of TB. The cold temperature showed an immediate effect at the current day, with a harvesting effect in the following days. The effect modifications by relative humidity, wind speed and sunshine duration were observed. Conclusion The cold effect accelerates the onset of potentially infected people in the short term. It is necessary to consider effect modification by meteorological factors in assessing temperature effects on incidence of tuberculosis. Which might shed light on the strategy of tuberculosis prevention and control.
Geochemistry of phosphorus and the behavior of apatite during crustal anatexis: Insights from melt inclusions and nanogranitoids
Authors: Yakymchuk Chris , Acosta-Vigil Antonio
Published: August 2019

The solubility of apatite in anatectic melt plays an important role in controlling the trace-element compositions and isotopic signatures of granites. The compositions of glassy melt inclusions and nanogranitoids in migmatites and granulites are compared with the results of experimental studies of apatite solubility to evaluate the factors that influence apatite behavior during prograde suprasolidus metamorphism and investigate the mechanisms of anatexis in the continental crust. The concentration of phosphorus in glassy melt inclusions and rehomogenized nanogranitoids suggests a strong control of melt aluminosity on apatite solubility in peraluminous granites, which is consistent with existing experimental studies. However, measured concentrations of phosphorus in melt inclusions and nanogranitoids are generally inconsistent with the concentrations expected from apatite solubility expressions based on experimental studies. Using currently available nanogranitoids and glassy melt inclusion compositions, we identify two main groups of inclusions: those trapped at lower temperature and showing the highest measured phosphorus concentrations, and melt inclusions trapped at the highest temperatures having the lowest phosphorus concentrations. The strong inconsistency between measured and experimentally predicted P concentrations in higher temperature samples may relate to apatite exhaustion during the production of large amounts of peraluminous melt at high temperatures. The inconsistency between measured and predicted phosphorus concentrations for the lower-temperature inclusions, however, cannot be explained by problems with the electron microprobe analyses of rehomogenized nanogranitoids and glassy melt inclusions, sequestration of phosphorus in major minerals and/or monazite, shielding or exhaustion of apatite during high-temperature metamorphism, and apatite–melt disequilibrium. The unsuitability of the currently available solubility equations is probably the main cause for the discrepancy between the measured concentrations of phosphorus in nanogranites and those predicted from current apatite solubility expressions. Syn-entrapment processes such as the generation of diffusive boundary layers at the mineral-melt interface may also be responsible for concentrations of P in nanogranitoids and glassy melt inclusions that are higher than those predicted in apatite-saturated melt.
Experimental quantification of the Fe-valence state at amosite-asbestos boundaries using acSTEM dual-electron energy-loss spectroscopy
Authors: Vigliaturo Ruggero , Pollastri Simone , Gieré Reto , Gualtieri Alessandro F. , Dražić Goran
Published: August 2019

Determination of the oxidation state and coordination geometry of iron in Fe-bearing minerals expands our knowledge obtained by standard mineralogical characterization. It provides information that is crucial in assessing the potential of minerals to interact with their surrounding environment and to generate reactive oxygen species, which can disrupt the normal function of living organisms. Aberration-corrected scanning transmission electron microscopy dual-electron energy-loss spectroscopy (acSTEM Dual-EELS) has only rarely been applied in environmental and medical mineralogy, but it can yield data that are essential for the description of near-surface and surface mechanisms involved in many environmental and health-related processes. In this study, we have applied the energy loss near-edge structure (ELNES) and L2,3 white-line intensity-ratio methods using both the universal curve and progressively larger integrating windows to verify their effectiveness in satisfactorily describing the valence state of iron at amosite grain boundaries, and, at the same time, to estimate thickness in the same region of interest. The average valence state obtained from acSTEM Dual-EELS and from a simplified geometrical model were in good agreement, and within the range defined by the bulk and the measured surface-valence states. In the specific case presented here, the use of the universal curve was most suitable in defining the valence state of iron at amosite grain boundaries. The study of ELNES revealed an excellent correspondence with the valence state determined by the L2,3 white-line intensity-ratio method through the use of the universal curve, and it seems that the spectra carry some information regarding the coordination geometry of Fe. The combination of visual examination, reconstruction of the grain boundaries through a simple geometrical model, and Dual-EELS investigation is a powerful tool for characterizing the grain boundaries of hazardous minerals and foreseeing their potential activity in an organism, with the possibility to describe toxic mechanisms in a stepwise fashion.
Exploring the benefits of corporate accelerators: investigating the SAP Industry 4.0 Startup Program
Authors: Gutmann Tobias , Kanbach Dominik , Seltman Scott
Published: August 2019

Corporate accelerators are on the rise and established companies from a diverse set of industries and regions have set up such startup support programs to predominantly pursue strategic goals. The purpose of this study is to shed light on the benefits of corporate accelerators from a corporate perspective and that of the participating startups. In order to do so, this in-depth single-site case study investigates the SAP Industry 4.0 Startup Program building upon an inductive research design with explorative nature. The authors qualitatively examine a newly established corporate accelerator program of one of the world’s largest enterprise software companies and provide valuable insights for both practitioners and scholars engaged in corporate accelerators. The benefits for startups participating in corporate accelerator programs can be linked to operational go-to-market acceleration in regards to product development, sales acceleration, as well as skill and knowledge development. Moreover, the startups receive benefits linked to strategic business development acceleration in the areas of strategy and business model improvements, pitching, financing, and strategic partner development. At the same time, corporate accelerators overall aim to increase the competitiveness of established companies running such programs by developing a product ecosystem and the brand, infusing startup culture into the organization and developing customer relationships.
Post-silicon verification of high-speed interconnections in Elbrus-8CB microprocessor
Authors: Ometov A. E. , Vinogradov A. A. , Vorobiev A. S.
Published: August 2019

The article describes the experiments carried out during the post-silicone verification of Elbrus-8CB microprocessor – one of the important stages of the verification process, which mostly determines the possibility of creating high-performance computing systems consisting of several microprocessors of this series. The interprocessor communication channels of the Elbrus-8CB microprocessor were investigated and some hypotheses were put forward about the reasons for their low operating speed. Experiments conducted to validate these hypotheses are made with intermediate conclusions based on their results. The built-in testing mechanism of CEI-6G and PCIe 2.0 physical levels was described alongside with its operating modes and testing algorithm. Several studies were carried out to ensure the correctness of the testing mechanism. This led to modifications of the initial testing method. The final conclusions about the reasons for the incorrect operation of interprocessor communications were made, and recommendations were given to improve the high-speed communications signals attenuation parameters and the level of their interference immunity. The relevance of this study for the production of modern high-performance computing systems can be traced not only in the growing interest of designers to this problem, but also in tightening of the requirements of the physical layers manufacturers.
The approach to design of dynamically reconfigurable arbitration units in embedded systems
Authors: Suvorova E. A.
Published: August 2019

Today we are seeing an intensive development of dynamically reconfigurable components in the FPGA-based embedded systems. Nevertheless, by their parameters, FPGA-based projects are essentially inferior to those that are on ASIC and the same design rules. This significantly limits applications of the FPGA-based reconfigurable systems. The paper presents relevance of dynamic reconfiguration for arbitration units in embedded systems. There is a review of existing design techniques for ASIC-based dynamically reconfigurable components. They have been also evaluated by applicability for the arbitration unit development (complex function modules for systems-on-chip and networks-on-chip). The authors have proposed the approach to the development of dynamically reconfigurable arbitration units in embedded systems. The approach makes it possible to consider specific requirements to these units.
Development of project-oriented spatial data infrastructure using cloud technologies
Authors: Yamashkin S. A. , Yamashkin A. A. , Fedosin S. A.
Published: August 2019

The article includes the issues of design, development and introduction of project-oriented spatial data infrastructures (SDIs) that build the information space to solve pressing challenges in economy, ecology, social services, in the field of preparation of pre-investment, urban planning, pre-project, project documentation, and natural disaster forecasting.

It also provides an overview of a historical development of spatial data infrastructures in Russia and in the world. Based on an analysis of a historical landscape within the challenging area, authors have identified the following system components of SDIs: users and professionals, data, technologies, standards, regulatory frameworks, and institutional procedures. There is a proposed platform solution architecture to build SDI, summarized in a form of a structure-component scheme. It rests upon the hypothesis that in order to optimize spatial data storage and application-related processes, the project-oriented SDI needs to include loosely bound and closely bound subsystems for spatial data storage (cloud or local storages), analysis and synthesis modules, as well as modules for visualization and distribution of spatial data (as geoportal systems).