bluuebunny/crossref_metadata_2025_split huggingface dataset:
Best Laboratory Procedures Beyond API Recommendations for Improving Deepwater Liner Cementing
Authors: Gannam M. G. , Rossi L. , Gregatti A. , Khalfallah I. , Azwar C. , Aslan J. , Sledz M. , Campos G. 
Published: March 2016

Abstract
Production liner cementing operations are critical due to the small cement slurry volume, the requirement to achieve good mud removal in narrow annuli and, in most cases, the need to pull the running tool out of cement at the end of the operation. The risk is increased when the operations are conducted in deepwater environment, because there is increased complexity in predicting the actual bottomhole circulating temperature due to the long water layer acting as a heat exchanger for the wellbore fluids.
In deepwater environment the cement slurry suffers different heating and cooling stages, such as being heated up when batch mixed, cooled down when passing through the riser-seawater section and heated up again when sent downhole. To avoid any problem after retrieving the running tool and landing string, a synergy between the operator and service company brought an improvement to laboratory testing procedures. Non-API laboratory tests for cementing liners were developed in Brazil using temperature simulators reproducing the planned operations and performing sensitivity analysis for additives concentration, fresh water content variation, slurry density variations, contamination effects and bottomhole circulating temperature changes.
These practices allow the operator to evaluate cement slurry behavior under a number of conditions that could otherwise cause major job failure or even loss of a well. This document describes in detail the procedures that significantly decrease the risks associated with liner cement jobs and the high costs related to failures in deepwater operations. Since the implementation of these measures, the operator has not experienced any liner cement job failure related to cement slurry design.
Marginal Gas Field Development through Innovative Sand Control Completion Concept
Authors: Zamberi M. , Sallehud-Din M. Mohd , Shaffee S. , Kamaruddin N. Nik , Jadid M. B. , Johar Z. 
Published: March 2016

AbstractPETRONAS is developing a marginal gas field (K Field) in Indonesia. The target reservoir is classified as unconsolidated in nature based on geological studies and core samples obtained from the field. The planned wells in the field comprises of long inclined well with requirement of downhole sand control. Gravel packing in long inclined well is operationally difficult and costly, rendering development of this marginal gas field uneconomical.Alternatively, Open Hole Stand Alone Sand Screen (OHSAS) completion was proposed and is supported by the sieve analysis. However, sand screen in gas well is susceptible to erosion due to expected high gas flow velocity in annular section. An innovative sand control completion was proposed with the main objective to segmentize the flow into multiple compartments in order to reduce annular flow velocity, which will potentially lead to reduced erosion on sand screen. This concept has been successfully piloted in a horizontal gas well with maximum production of ~20MMscfd.In order to apply the concept in an inclined well, CFD modelling is conducted to assess the gas velocity distribution of the concept in a long inclined open hole as it is expected that there will be variations in the pressure and inflow distributions between horizontal and inclined wells. The pressure and velocity profiles obtained from CFD in base pipe and annular section for vertical well is compared to those of inclined wells (14, 45, 76 degrees). Results from CFD modelling indicates that the effects of well inclination has a negligible effect on base pipe and annular velocity distribution for different segmentizer placement distance.Apart from CFD analysis, parametric sensitivity study on flow rate and sand loading were conducted using an in-house proprietary methodology to optimize the number of segmentizer along the six development wells. Study indicates that flow segmentizers are capable to reduce the annular velocity below the critical limit for erosion for the 6 proposed development wells which results in reduced potential erosion risks on the sand screen. Subsequently, based on the recommendation from the study, OHSAS completion with flow segmentizers was successfully installed in 6 wells in K field in 2014. This has provided strong indication that OHSAS with flow segmentizers is a technically viable well completion option which has significant economic benefit for potential application in developing marginal gas field. K Field has achieved first gas on September 2015 with 6 wells currently online with sand production limit of below 0.5 lb/MMscf.
Optimising Data Processing for Subsea System Surveillance Through Subsea Condition Monitoring
Authors: Chze Leong Pei , Liam Cheah Wil 
Published: March 2016

Abstract
Vast amounts of data are generated from a typical subsea control system, which provides visibility of the current subsea system condition to the operators. However, the extent of visibility is often limited by ineffective data processing and analysis. This paper will illustrate how data processing can be optimized through the implementation of subsea condition monitoring system, and subsequently reduce operational expenses (OPEX).
Similar to the subsea control system, all data is instantaneously received by the subsea condition monitoring system to provide operator with live data updates, which also allows historical trending for easy analyzing. Raw data can easily be displayed; however will only be valuable when translated to an actionable data. The condition monitoring system processes and analyzes each data points and translates them to a measurable condition index, which defines the subsea asset's integrity and determines how severely it impacts production and system availability. Data is presented in a dedicated user interface according to equipment and issue related information, which allows onshore operator and product experts a better focus and control during troubleshooting, root cause analysis or daily surveillance. With the capability of remote surveillance and utilization of existing instrumentation and equipment, the condition monitoring system can be conveniently implemented on both new and mature fields.
The condition monitoring system's data processing methodology will be illustrated and compared with the typical subsea control system. A field operational example will be shared to demonstrate how the processed data provides an early warning whilst the equipment is still operating. Having a constant knowledge of the equipment's condition from the continuous real-time update allows early proactive maintenance planning, hence reducing system downtime and maximizing intervention efficiency.
By extending the subsea control system with a separate condition monitoring system, operator will have a full control and in-depth knowledge about the subsea production system. Proactively recognizing and understanding equipment condition based on performance trends will help avoid costly unplanned repairs.
Comparative Analysis of Well Efficiencies Achievable between Mooring and Dynamic Positioning for Deepwater Station Keeping
Authors: Ajimoko O.O. (Tayo) 
Published: March 2016

Abstract
Semisubmersible rigs have capacity for drilling in water depth ranging from shallow (&gt;400 ft.) to ultra-deep water (&gt;10,000ft). Station keeping and rig positioning over the well centre during drilling, completion and testing operation is achieved either by anchoring the rig in position via an 8 point or 12 point mooring system or by dynamic positioning (DP).
Semisubmersible rig development has progressed since the age of the 4th generation semis which is considered as the hinge or fulcrum generation consisting of a mix of old generation midwater rigs and new generation deep water rigs to the present. The rig evolution has progressed from the 4th generation rigs with water depth capability ranging from 1,500 ft. to 7,000 ft. and station keeping capabilities consisting of a mix of dynamic positioning and mooring to the most recent 7th generation semisubs which are mainly dynamically positioned. A comparative analysis of mooring and dynamic positioning will be performed in this paper.
A holistic and thematic approach will be adopted in this analysis and current operating and design guidelines as well as documented performances and limitations of vessels employing both type of station keeping methods will be reviewed. Important consideration will be given to rig-move efficiency, spudding-in, deck load requirements and motion characteristics. All the factors present significant operational opportunity to increase profitability or totally whittle it down especially in a deep water project. The potential value and efficiency of each factor will be evaluated
The station keeping drivers and degree of accuracy is driven by the type of project under consideration, either exploration, development or intervention project. This paper presents a comparative analysis of the risks, achievable efficiencies, operational limits and environmental constraints involved when employing a moored and DP rig for station keeping relative to the well objectives. Specifically, positional accuracy, ease of station keeping, ease of evacuation, riser design requirements and limitations and operational limits are some of the other key issues that will be addressed. A performance and commercial comparison of a dynamically positioned and moored semisubmersible rig on a 5 well exploration program will be used to highlight the value of each station keeping approaches
The Etnogenez Project: Ideology and Science Fiction in Putin's Russia
Authors: Bassin Mark , Kotkina Irina 
Published: March 2016

ABSTRACT
This essay examines the Etnogenez series of science fiction and fantasy novels. Launched in 2009 by the media producer, “political technologist,” and Kremlin insider Konstantin Rykov, Etnogenez has enjoyed truly phenomenal success, developing into one of the most ambitious publishing projects of the post-Soviet period. At present it numbers more than fifty works, which circulate in millions of copies and additionally are broadly disseminated on the Internet and as e-books, audiobooks, and podcasts. There are Etnogenez fan clubs, computer games, and dozens of Internet discussion groups. Although the novels in the series differ widely in their plots and subjects, and are written in a variety of different science fiction genres, all of them are loosely inspired by the work of the historian and geographer Lev Nikolaevich Gumilev, in particular his theories of ethnogenesis (from which the project takes its name), passionarnost', and Eurasianism. The essay explores the powerful resonances between the Etnogenez project, the Gumilevian legacy, and the leading political and social narratives of Putin's Russia.
Optimization of Pyrogallol Autoxidation Conditions and Its Application in Evaluation of Superoxide Anion Radical Scavenging Capacity for Four Antioxidants
Authors: Zhang Qing-An , Wang Xi , Song Yun , Fan Xue-Hui , García Martín Juan Francisco 
Published: March 2016

Abstract
In this study, some factors influencing pyrogallol autoxidation, including EDTA, temperature, and solvent, were systematically investigated to improve its feasibility in the evaluation of antioxidants for the first time. Subsequently, the improved pyrogallol autoxidation conditions were used to assess the superoxide anion scavenging activity (SASA) of four commonly used antioxidants, namely, ascorbic acid, rutin, catechin, and gallic acid, by both the reaction rate method and the terminated method. The results indicate that pyrogallol autoxidation could be successfully used to determine the antioxidant capacity of ascorbic acid and rutin, which correspondingly suggests the feasibility of its use to measure the superoxide anion radical scavenging activity of polysaccharides and flavonols, because these compounds have a similar basic structural unit as ascorbic acid and rutin, respectively. Unexpectedly, however, pyrogallol autoxidation cannot be used to evaluate the SASA of catechin and gallic acid, although their good antioxidant capacity was confirmed by the 1,1-diphenyl-2-picrylhydrazyl assay. Together, these results suggest the importance of noting the conditions used for pyrogallol autoxidation when assessing the SASA of targeted compounds.
Human Posture Recognition Based on Images Captured by the Kinect Sensor
Authors: Wang Wen-June , Chang Jun-Wei , Haung Shih-Fu , Wang Rong-Jyue 
Published: March 2016

In this paper we combine several image processing techniques with the depth images captured by a Kinect sensor to successfully recognize the five distinct human postures of sitting, standing, stooping, kneeling, and lying. The proposed recognition procedure first uses background subtraction on the depth image to extract a silhouette contour of a human. Then, a horizontal projection of the silhouette contour is employed to ascertain whether or not the human is kneeling. If the figure is not kneeling, the star skeleton technique is applied to the silhouette contour to obtain its feature points. We can then use the feature points together with the centre of gravity to calculate the feature vectors and depth values of the body. Next, we input the feature vectors and the depth values into a pre-trained LVQ (learning vector quantization) neural network; the outputs of this will determine the postures of sitting (or standing), stooping, and lying. Lastly, if an output indicates sitting or standing, one further, similar feature identification technique is needed to confirm this output. Based on the results of many experiments, using the proposed method, the rate of successful recognition is higher than 97% in the test data, even though the subjects of the experiments may not have been facing the Kinect sensor and may have had different statures. The proposed method can be called a “hybrid recognition method”, as many techniques are combined in order to achieve a very high recognition rate paired with a very short processing time.
Kommunikation og udvikling
Authors: Paludan Kristian 
Published: March 2016

Hvilken rolle spiller kommunikation for udvikling? Holdningerne til dette
spørgsmål har ændret sig de sidste tyve år. Kristian Paludan beskriver
den udvikling, der er sket i forholdet mellem de private hjælpeorganisa-
tioner i Nord og bistandsmodtagerne i Syd, specielt hvad angår kommu-
nikation. Hvor kommunikation før blev opfattet som et værktøj og man
lagde størst vægt på hardware, opfattes kommunikation som en del af
udvikling, som en proces, hvor deltagerne opnår selvværd og bevidst-
hed. De alternative videoproducenter spiller en vigtig rolle f.eks. i Latin-
amerika og der er sket en tilnærmelse mellem dem og udviklingsorga-
nisationerne de sidste år. Begge parter står i et dilemma overfor TV -
de vil gerne kommunikere til et massepublikum, man oplever, at deres
budskaber forvrænges af TV. Til slut i artiklen giver Paludan nogle bud
på det fremtidige samarbejde mellem Syd og Nord på kommunikations-
området. Artiklen er det oplæg Paludan holdt på Folkekirkens Nød-
hjælps Konference om TV og Video og Latinamerika, november 1992.
Sociologi og målgruppe. Nogle erfaringer med at operationalisere Bourdieu
Authors: Dahl Henrik 
Published: March 2016

Den franske sociolog Pierre Bourdieu har været em af mediefor-
skernes største guruer siden midten af 1980´erne. Hans centrale
begreber "habitus", "kapital", "smag" og "praksis" er belvet brugt
og misbrugt af forskere og studerende, der havde brug for en ram-
me, der kunne forklare sammenhængen mellem klasse, socialisia-
tion og menneskers mangfoldige adfærd på det mediekulturelle om-
råde. Bourdieus appel har bl. a. bestået i, at han konsekvent har
bestræbt sig på ikke at falde i nogen af de traditionelle sociologiske
grøfter: subjektivisme/objektivisme, determinisme/voluntarisme, osv.
Samtidig er der inden for den kommercielle medieforskning opstået
en voksende skepsis over for de klassiske demografiske faktorers
forklaringskraft i forhold til f.eks. markedsføring. I stedet har man
udviklet analysemodeller, der i første omgang udelukkende katego-
riserer mennesker ud fra deres livsværdier (f.eks. den såkaldte
RISC-model). Sociologen Henrik Dahl har i en årrække været fas-
cineret af de slående ligheder mellem Bourdieus teorier og RISC-
analysen. I denne artikel fremlægger han for første gang sit arbejde
med at sammentænke disse tilgange teoretisk og empirisk. Efter en
præsentation af RISC-analysen gennemprøves den i forhold til Bour-
dieus nøglebegreber. Desuden sætter artiklen med rammende ka-
rakteristikker nutidigt dansk kød og blod på den Bourdieuske kultur-
analyse, hvis anvendelse i en dansk sammenhæng hidtil har været
begrænset af dens oprindelse i 1960´ernes Frankrig.
Dokumentarfilmen som frit kunstnerisk udtryk?
Authors: Jacobsen Ulla 
Published: March 2016

Dokumentarfilmen eksisterer i spændingsfeltet mellem kunst, industri og
politik. Modsat fiktionsfilmen har den aldrig været økonomisk rentabel,
hvad der har gjort den afhængig af eksterne financieringskilder. I denne
artikel belyser Ulla Jacobsen dokumentarfilmens historie i et økonomisk
perspektiv og behandler de finansielle faktorers konsekvenser for indhold,
tendens og æstetik. Hvor dokumentarfilmen i mellemkrigstiden var af-
hængig af stat og private sponsorer, der satte deres præg på indhold og
politisk tendens, er den i efterkrigstiden blevet afhængig af public service
TV og offentlige fonde. Dette har medført en spaltning i hhv. journalistiske
og auteur-prægede dokumentarfilm i Vesteuropa; denne oversigt bygger
på rapporten "The Eurepean Documentary Sector", som forfatteren sam-
men med Gitte Hansen har skrevet for EU´s Documentary-program.
Kropssprog i medieret form
Authors: Grodal Torben Kragh 
Published: March 2016

Med referencer til og eksempler hentet fra såvel Kurosavas film, talk-
shows, sæbeoperaer og endda Anja Andersens raserianfald på TV-
skærmen, kommer Torben Grodal i denne artikel med en illustrativ
introduktion til, hvordan ikke-sproglig kommunikation fungerer, her-
under hvilke interaktionelle karakteristika denne kommunikationsform
besidder. Forfatteren præsenterer nogle grundbegreber inden for den
ikke-sproglige kommunikation og analyserer, hvordan forskellige aspek-
ter af vor medfødte kropssprog overføres og udtrykkes i audiovisuelle
medier. Slutteligt argumenterer Grodal for nødvendigheden af at give
analyserne af den ikke-sproglige kommunikation en central plads i ana-
lyser af den audiovisuelle kommunikation.
Massekommunikation og parasocial interaktion: Et indlæg om intimitet på afstand
Authors: Horton Donald , Wohl R. Richard 
Published: March 2016

Denne artikel af Donald Horton og Richard Wohl blev først offentliggjort
i 1956 i det amerikanske tidsskrift Journal of Psychiatry: Den var en af
de tidligste undersøgelser af, hvordan medierne of mediernes personlig-
heder/ optrædende skaber illusionen om et personligt forhold mellem
optrædende og seer. Forfatterne kalder dette en parasocial relation ",
fordi det er baseret på en underforstået overenskomst mellem den op-
trædende og seeren om, at de vil lade som om forholdet ikke bliver for-
midlet - at begge parter vil lade som om dette er et personligt møde,
ansigt til ansigt. Mange fjernsyns- og radioprogrammer benytter den
"parasociale" teknik, hvor journalisten-analytikeren-kommentatoren
taler direkte til 3n, indvier 3n i følelser, vitser og personlige referencer.
Fører radio disc jockeyen en samtale med dig når du kører bil? Tænk
på hvor mange af disse stedfortrædende personlige relationer vi har til
de optrædende i medierne. Artiklen er oversat af Gunhild Wernblad.
Internettets historie
Authors: Christensen Jens 
Published: March 2016

Internettet er langt fra nogen ny opfindelse, - det frembærer sin egen
særlige historie. I denne artikel gennemgår Jens Christensen Internet-
tets udvikling fra pionertiden i 1960´erne og 70´erne, over forskernet-
værk i 80´erne, frem til det globale samfundsnet i 90´erne. Under den-
ne gennemgang gives også beskrivelser af de centrale teknologiske
nyskabelser, der ligger bag computermedieret kommunikation. Afslut-
ningsvis leveres et overslag over Internettets aktuelle størrelse samt
en oversigt over brugere, udbydere og anvendelsesmuligheder.
Barndom i forandring, medier i forandring. Nye dagsordner inden for forskning i børns mediekultur
Authors: Buckingham David 
Published: March 2016

David Buckingham analyserer i artiklen de forandringer, der i de seneste
årtier har karakteristisk såvel barndomsbegrebet som børns forhold til
medierne. På baggrund af beskrivelser af forskningsnæssige, kulturelle
og sociologiske udviklingstræk på begge områder, analyserer han hvor-
ledes udviklingen på de to områder i hovedtrækkene er indbyrdes for-
bundne. Denne analyse bidrager til Buckinghams mere overordnede pro-
jekt, nemlig at problematisere traditionelle måder at gribe forskning i børns
mediebrug an på. Han taler på baggrund af analysen for en kobling mellem
forskelli ge analysemetoder således at f.eks. receptionsanalyse kobles
med tekstanalyse og institutionsanalyse, og endvidere at denne mangefa-
cetterede tilgang til feltet perspektiveres ved såvel at se på børn og barn-
dom i et sociologisk perspektiv som i lyset af barndommens historie.
Særtræk i den 7. og 9. kunstart
Authors: Groensteen Theirry 
Published: March 2016

Tegneserien betragtes i mange sammenhænge som et æstetisk opkog af
den fortællende film. Dette er et dogme, som stadig hersker, på trods af at
de tidlige filminstruktører var milevidt fra de samtidige tegneseriekunstneres
narrative virtuositet. I “Særtræk i den 7ende og 9ende kunstart” argumente-
rer Thierry Groensteen for, at tegneserier og film nok i nogle henseender
betjener sig af samme betydningsregistre, men tillige er karakteriseret ved
særtræk i teknologi, produktion og udtryksmateriale.
Modtagerforskning og kulturstudier. Om kvantitativ og kvalitative tilgange i dansk medieforskning
Authors: Bang Jørgen 
Published: March 2016

Dansk medieforskning går i mange henseender sine egne veje. Det gør sig
også gældende i receptionsforskningen. Hvor forholdet mellem kvantitative
og kvalitative metoder står på dagsordenen i den internationale debat om
modtager forskningen, fokuseres der i den danske diskussion på forholdet
mellem den æstetiske analyse af teksten og empiriske studier af modtager-
nes forståelser og oplevelser. Gennem personsammenfald glider de to
diskussioner imidlertid ind i hinanden.

I denne artikel forsøger Jørgen Bang at rede trådene ud fra hinanden for
derefter at vurdere, hvilke muligheder der ligger for en dialog mellem de
forskellige forskningstraditioner.

På den ene side argumenterer han for nødvendigheden i at forlade den
traditionelle humanistiske kulturopfattelse, hvor der opereres med et ab-
solut skel mellem kunst og kulturindustri, til fordel for en antropologiske
kulturopfattelse, der fokuserer på mediernes funktion i forskellige
befolkningsgruppers livssammenhæng. På den anden side ønsker han at
fastholde den humanistiskeforståelse af, at medieteksten iscenesætter
intersubjektive forestillinger blandt de seere/lyttere/læsere, som lader sig
"fange ind" af den. På hvilke sociale, psykologiske og tekstuelle betingelser
selve tilegnelser sker, mener han imidlertidig fortsat er et uafklaret spørgs-
mål, som kun en empirisk orienteret modtagerforskning kan finde svar på.