bluuebunny/crossref_metadata_2025_split huggingface dataset:
An integrated Power Solution for Enabling Large-Scale Subsea Processing
Authors: Rasch Bjørn 
Published: April 2015

Abstract
There is a growing demand within the oil and gas industry for an integrated subsea power system in order to achieve the highest availability of power supply and power distribution subsea. For that reason, since 2010, a subsea power grid system is being developed by Siemens. The purpose of this system is to power subsea consumers like pumps and compressors in deep and ultra-deep waters and for long step-outs.
The subsea power supply and distribution system, including all its components, is designed and qualified to work at a water depth of 3000 meters, and up to more than 200 kilometers step-out distance. It will offer an integrated, reliable and cost-efficient subsea power solution for multiple consumers on the seabed.
The development and qualification program is currently in its last stages. Testing of the individual components (subsea transformer, switchgear, variable-speed drive and communication/control system) will be followed by a complete system test. Overall, the development and qualification program is expected to be completed in 2016, at which time the system will be ready for a full-scale subsea pilot project.
The power system must have standardized, flexible and configurable interfaces to have an optimal fit with the processing system. The integrity of the power system is governed by a dedicated power control and monitoring system which enables transparent and standardized communication with all the power modules. The Subsea Power Grid solution offers an infrastructure with standardized interfaces both on the topside / onshore power generation and to the subsea consumers – both for the power line and for the power control and communication line. This ensures flexible arrangements with the subsea field's overall processing system without challenging the integrity of the power distribution.
The paper focuses on how a subsea power distribution system can be integrated in any subsea pumping or compression systems without sacrificing the integrity of modules in the subsea power grid solution.
Gulfstar - VIM and Mooring Chain Fatigue
Authors: Park Young-Chan (Y.C.) , Antony Arun , Moideen Hisham , Jamnongpipatkul Arada 
Published: April 2015

Abstract
Spars have been scrutinized for years for their response to large current velocities in the form of the so-called, "Vortex Induced Motions." While some field data on such motions have been collected, the availability of this data is limited, so inquiries and computations about this phenomenon are largely based on the results of tow tank-based model testing.
The Gulfstar FPS, with its relatively small Classic Spar hull (85 ft diameter, 524 ft draft) is no exception to VIM. In fact, its "Classic" (full cylinder) hull is more affected in this regard than either the Truss Spar hull form or the multi-column floaters, Semis and TLPs.
This paper describes the Gulfstar hull's journey through tow tank testing, flume tank testing and computational fluid dynamics (CFD) computations. This journey uncovered concerns about the fatigue life of the chain. Several design changes were implemented during the design phase to mitigate the fatigue concerns. These concerns, mitigation strategies, differences in the testing programs and CFD results plus notable lessons learned are described and commented upon in this paper.
The paper concludes with analysis results of the platform's responses to loop current events in the second half of 2014 and how the actual motions compare with predicted motions.
Gulfstar - Naval Architecture From Design to Hull Installation
Authors: Antony Arun , Park Young-Chan(Y.C.) , Zou Jun , Jamnongpipatkul Arada 
Published: April 2015

Abstract
Williams Field Services (WFS) use of the classic Spar hull form for the deepwater field development projects is the first classic Spar hull since ExxonMobil installed the Diana/Hoover Spar in 2000. Since that time, 14 Truss Spars and one Cell Spar have been installed. Learnings from those Spars along with increases in the metocean condition since 2000, significant increases in topside payload during detailed design, support of the five initial SCRs on a porch at the keel plus the decision to fabricate the hull in a US graving dock provided new challenges for the Naval Architects from design through to hull installation.
The paper discusses the key drivers, constraints and criteria that had to be reconciled into a floating system with acceptable global motions, acceptable horizontal trim and robust characteristics for changes in topside payload and CGs. Examples of these sometimes conflicting design requirements include: the increased hull freeboard which was driven by the new metocean condition which then led to a higher topside VCG, a 30% increase in the topside's maximum operating payload between the end of FEED and midway into final design yet the depth and length of the graving dock dictated that these changes had to be accommodated without increasing either the diameter or draft of the hull. This paper presents the challenging results of the model tests and their impacts on the design of the mooring system as well as the very close tolerances in trim and stability for the tow out of the graving dock and then to site.
Guidance for Civil Engineers Working in Marine Renewable Energy Areas – Keynote Address
Authors: Stewart William P. , Hudon Thomas J. 
Published: April 2015

Abstract
This paper provides an overview of the evolution of a guide document for civil engineers produced by the American Society of Civil Engineers (ASCE) Coasts, Oceans, Ports, and Rivers Institute (COPRI) Marine Renewable Energy (MRE) Committee over the last five years. The document will provide guidance to MRE designers and analysts, providing confidence as to reliability and insurability. All papers in the MRE session address specific civil engineering aspects of MRE projects. The papers cover multiple engineering disciplines required for relatively new MRE technologies that are arriving into the well-established and documented ocean environment. Some papers naturally touch on the electrical and mechanical issues involved with specific MRE device technology. The guide document that has evolved includes chapters developed by experienced engineers, generally working in sub-committees, including sections addressing: Environmental Loads,Geotechnics,Government Issues,Moorings,In-Stream Hydrokinetics (ocean, riverine, and tidal currents)Ocean Thermal Energy Conversion,Risk and Reliability,Submarine Cables, andWave Energy Converters.
In most areas the guide points towards existing well-established codes including API, ISO and Classification Societies, as well as newer evolving international codes such as those being developed by the International Electrotechnical Commission (IEC). Several MRE committee members also sit on the IEC Technical Committee (TC) 114 US Technical Advisory Group (TAG) and improve liaison between IEC and ASCE COPRI. In some areas, particularly geotechnics, the guide provides information not found in existing codes. Engineers who read the guide will gain a basic knowledge of a wide range of MRE devices, as well as an understanding of how to deal with the civil engineering aspects of their design and analysis. This information is difficult to find in a technical and comprehensive form elsewhere. This paper presents an insight as to what will be in the ASCE COPRI MRE guide.
Fabrication and Installation of the Williams Gulfstar 1 FPS (GS1) Classic Spar Hull
Authors: Cizek Mark , Godfrey Dan , Wright Larry 
Published: April 2015

Abstract
The majority of Spar hulls have been fabricated overseas on skid ways and transported stateside for quayside offloading using submersible Heavy Lift Vessels. For the Williams Gulfstar 1 FPS (GS1) Floating Production System (FPS) we elected to construct the hull in a graving dock and tow it directly to the installation site. This paper will describe the unique fabrication and installation techniques that were used to build a classic Spar hull within a graving dock, rather than using the traditional skid way and overseas-transport approach. It will also describe the GS1 hull installation campaign including tow to site, upending, and hull and mooring installation.
The overall fabrication approach for the GS1 hull was a stateside program utilizing Gulf of Mexico fabricators. The fabrication portion of the paper will focus on the construction methodology for the hull, including the lessons learned incorporated into the design before the start of construction, as well as those realized during construction that were implemented at site to improve both cost and schedule. The major challenges addressed will include modular fabrication, dimensional control, and sequencing and lifting the modular blocks into the graving dock using one of the world’s largest onshore cranes.
The GS1 installation planning and execution experience will be described with focus on a record-breaking installation program with specific identification of the considerable benefits realized by using a temporary work deck for pull-in of all mooring lines and risers. This paper highlights lessons learned, both good and bad, through the unique fabrication and installation approaches used to safely fabricate and install GS1. These lessons learned are applicable to engineers and planners for the fabrication and installation of a Spar-based FPS.
Developments in Deepwater Installation Systems
Authors: McPherson Gregor 
Published: April 2015

With more processing equipment and functions traditionally based topside being deployed subsea to deeper waters, so the industry is pushing the limits of installation engineering technologies. Lowering heavy subsea processing equipment to water depths in excess of 1,500m is challenging the industry to reassess long held assumptions on the performance of steel wire and synthetic fibre ropes, together with winch technologies.
In this paper, Caley Ocean Systems draws on its experience of both deepwater installation systems (high loads, waters depths up to 2,000m) and oceanographic winch systems (small loads, water depths in excess of 10,000m) to propose a holistic approach that considers the characteristics of the rope and winch as a whole rather than as separate elements.
Aligning Diverse Portfolio and Execution for Capital Efficiency
Authors: Martijn Dekker , Paul McNutt , Greg Roder , Stuart Wheaton , Sandeep Khurana 
Published: April 2015

AbstractToday oil and gas companies are continuously facing choices encompassing a wide range of opportunities, from unconventional to ultra-deepwater, known basins with deeper and different plays to new frontiers and untested plays in the international arena. A quick look at the market underscores the diversity of deals across the conventional and unconventional sectors, across the globe and across public and private companies. Business is further complicated with large gas resources in areas with limited local gas markets and in frontier or remote locations.Aligning a diverse portfolio with an organization's execution capabilities and capacity is an imperative to achieve capital efficiency and meet shareholder expectations. It stems from a challenge of constructing a portfolio that provides both cash flow and long term growth. There should also be a direct connection of the organization's strategy and its investment proposition; i.e. should companies mitigate risk by diversification across countries, or asset types, or play types, or alternatively, be a focused "pure-play" organization leaving the investment diversification to the investors themselves. Either way, it demands a versatile organization to create and maintain the value, and it requires innovative techniques to find a competitive edge.This manuscript is intended to provide basic background and to set the stage for a panel discussion scheduled for 9.30am- Noon, Wednesday, May 6, 2015 at the conference. After identifying the main industry trends and discussing the basics of capital efficiency, the manuscript investigates key elements of a portfolio that enables the company's pursued strategies with the focus on exploration and development initiatives. Four (4) main plays, namely, deepwater and ultra-deepwater, unconventional, oil sands and gas (that includes liquefied natural gas, coal seam gas, etc.) plays are examined as a premise for the panel discussion area. The panel will discuss how companies are handling these challenges of diversity with financial and organizational strengths while carefully selecting technology to be competitive.
Explicit Form of Cassels’p-adic Embedding Theorem for Number Fields
Authors: Dubickas Arturas , Sha Min , Shparlinski Igor 
Published: April 2015

AbstractIn this paper, we give a general explicit form of Cassels’p-adic embedding theorem for number fields. We also give its reûned form in the case of cyclotomic fields. As a byproduct, given an irreducible polynomialfover ℤ, we give a general unconditional upper bound for the smallest prime numberpsuch thatfhas a simple root modulop.
Generating Some Symmetric Semi-classical Orthogonal Polynomials
Authors: Zaatra Mohamed 
Published: April 2015

AbstractWe show that ifvis a regular semi-classical form (linear functional), then the symmetric formudefined by the relationx2σu= -λv, where (σƒ)(x) = f (x2) and the odd moments ofuare 0, is also regular and semi-classical form for every complex λ except for a discrete set of numbers depending onv. We give explicitly the three-term recurrence relation and the structure relation coefficients of the orthogonal polynomials sequence associated withuand the class of the formuknowing that ofv. We conclude with an illustrative example.
Craig, Todd. ""'Jackin’ for Beats'": DJing for Citation Critique." Radical Teacher [Online], 97 (2013): 20-29. Web. 19 Feb. 2014
Authors: Teacher Radical 
Published: April 2015

Radical Teacher wishes to apologize to Todd Craig for misprinting the title of his article in RT 97 (Hip Hop and Critical Pedagogy). Instead of “’Jackin’ for Beats’”: DJing for Citation Critique, the title should have been “Jackin’ for Beats”: DJing for Citation Critique.
The “Transatlantic” and Late Nineteenth-Century American Women's Humor
Authors: Stetz Margaret D. 
Published: April 2015

ABSTRACT:
For many years, scholars wrongly characterized nineteenth-century American humor as having been an exclusively masculine preserve. When feminist historians corrected this error, they also introduced a new one, defining women's humor writing in too narrow a fashion—that is, as limited to the vernacular mode. Some late nineteenth-century American women's comic poetry and autobiographical fiction, however, also embraced a sophisticated voice that derived from and responded to British models. These works—by figures such as Ella Wheeler Wilcox, Frances Hodgson Burnett, Helen Gray Cone, and Carolyn Wells—positioned themselves as part of a transatlantic tradition of literary wit. Reviving and reconsidering these overlooked and unjustly neglected texts today will allow us to remap the landscape of American humor studies.
Hospital resource utilization associated with pediatric gastrostomy devices
Authors: Richards Morgan K , McAteer Jarod P , Kotagal Meera , Shaw Dennis W , Wahbeh Ghassan T , Melzer Lilah , Goldin Adam B 
Published: April 2015

Objective: Pediatric gastrostomy devices (GD) are associated with frequent planned and unplanned ongoing care. The objective was to examine the association between planned or unplanned repeat intervention and 1) the type of tube at initial placement and 2) the method of initial device placement: operative, endoscopic or image-guided.Methods: We performed a retrospective review from January 1, 2010 – December 31, 2011 of consecutive patients that received a GD or gastrojejunostomy device (GJ) at a freestanding pediatric hospital. We estimated the risk of hospital utilization in terms of repeat interventions or device-related emergency department visits for initial GJ versus GD placement and based on method of initial device placement.Results: Over the two year period, 275 (92.0%) GDs and 24 (8.0%) GJs were placed. One hundred forty-five (48.5%) were placed surgically, 113 (37.8%) endoscopically, and 41 (13.7%) with an image-guided technique. Repeat utilization occurred in 60.9% of patients. Multivariate Poisson regression estimated that GJs compared to GDs were 2.05 (95% CI: 1.01 - 4.16) times as likely to have repeat hospital utilization. Multivariate Cox regression estimated that endoscopic and image-guided placements were associated with higher rates of hospital utilization than surgical placement (HR 2.56; 95% CI: 1.73 - 3.79 and 2.07; 95% CI: 1.20 - 3.58, respectively).Conclusions: Resource utilization after GD/GJ placement is not equal relative to the method of initial placement. Process standardization requires further investigation to reduce this health care burden.
Temptations of theory, strategies of evidence: P. M. S. Blackett and the earth's magnetism, 1947–52
Authors: NYE MARY JO 
Published: July 2002

In the late spring of 1947, the experimental physicist P. M. S. Blackett succumbed to the temptations of theory. At this time, Blackett (1897–1974) was fifty years old. He was a veteran of the Cavendish tradition in particle physics and he was on his way to an unshared award of the 1948 Nobel Prize for his experimental researches in nuclear physics and cosmic-ray physics. His photographs of cloud-chamber tracks of alpha particles, protons, electrons and positrons were well known to practitioners of particle physics, even as they now grace the pages of physics textbooks.Blackett's turn toward theory in 1947 involved some risk for a well-established experimental physicist. The 3 May 1947 issue of Nature carried an announcement of his forthcoming lecture at the Royal Society:Professor P. M. S. Blackett, Langworthy Professor of Physics in the University of Manchester, will deliver a lecture on ‘The Magnetic Field of Massive Rotating Bodies’ at a meeting of the Royal Society on May 15, at 4:30 p.m.Blackett circulated a preliminary draft of his paper among colleagues in several different fields, including the geophysicist Sydney Chapman and the astrophysicist Harry Plaskett.
Palaeomagnetism of the Borrowdale and Eycott volcanic
groups, English Lake District: primary and secondary
magnetization during a single late Ordovician polarity chron
Authors: PIPER J. D. A. , STEPHEN J. C. , BRANNEY M. J. 
Published: July 2002

Late Ordovician volcanic rocks of the English Lake District
typically have a magnetic remanence
dominated by a single characteristic component. Previous investigations have
interpreted this remanence
as both of primary (pre-folding) and secondary origin. Palaeomagnetic
field tests have been
conducted on (a) andesite blocks from an autobrecciated lava top, (b)
andesite blocks in mass-flow breccias,
and (c) fault-blocks tilted during Ordovician caldera collapse to establish
the time of remanence acquisition.
All three tests show that the lavas retain a magnetization acquired during
initial cooling: magnetizations of
the breccias are coherent within clasts and random between clasts, whilst
magnetizations of the tilted fault
blocks converge with better that 95% confidence when corrected for the
effects of caldera collapse. In contrast,
the volcaniclastic sedimentary and pyroclastic rocks possess an
Ordovician secondary remanence
acquired after strata had been tilted by volcano-tectonic subsidence.
A distributed sample of 65 andesite and
basalt sheets through the Borrowdale Volcanic Group has a mean
remanence direction D/I=341.9/−48.9°
(α95=4.0°) yielding a positive fold test and a
palaeomagnetic pole at 12.7°E, 4.3°S (dp/dm=3.5/5.3°). A
progressive steepening of the palaeofield direction is recorded during
emplacement of the Borrowdale
Volcanic Group (∼I=−39° to I=−51°) which
continued into the interval of volcanotectonic overprinting
(I=−62°); the equivalent motion of Eastern Avalonia is
∼20° into higher southerly latitudes.Both the Eycott and Borrowdale volcanic groups exhibit uniform
normal polarity throughout. Correlation
with the geomagnetic time scale for the Ordovician restores the broad
correlation between the two groups by
constraining their emplacement and partial overprinting to a single
long normal polarity chron occupying
the Nemagraptus gracilis and earlier part of the Diplograptus
multidens biozones (late Llandeilo and early
Caradoc). All the volcanism, therefore, occurred within a period of no
more than ∼5 Ma. The palaeomagnetic
evidence confirms that the Borrowdale Volcanic Group was affected by both
syn-volcanic deformation
(caldera collapse) and regional compressive deformation prior to
deposition of the (late
Ordovician–Silurian) Windermere Supergroup. The succession of
primary and secondary Ordovician
palaeomagnetic poles from the Lake District inlier defines an anticlockwise
apparent polar wander (APW)
loop with the apex correlating with ‘soft’ closure of the
Iapetus Ocean and late Ordovician deformation. The
APW paths from Avalonia and Baltica converge at this point as subduction
ceased and the arc subsided beneath the sea after mid-Caradoc times.
REVISIONISM AND THE ANCIENT HISTORICISM
Authors: BALDWIN GEOFF 
Published: July 2002

Absolute monarchy and the Stuart constitution. By

Glenn Burgess. New Haven, Conn.: Yale

University Press, 1996. Pp. ix+229. £25.00.Henry Parker and the English civil war. By Michael

Mendle. Cambridge: Cambridge

University Press, 1995. Pp. xix+204. £35.00.Classical humanism and English political thought,

1550–1640. By Markku Peltonen.

Cambridge: Cambridge University Press, 1996. Pp. xii+356. £35.00.Republicanism, liberty, and commercial society, 1649–1776.

Ed. David Wootton. Stanford, Ca.:

Stanford University Press, 1995. Pp. ix+497. £40.00.
CHURCHILL WITHOUT THE RHETORIC
Authors: Stewart Graham 
Published: July 2002

Winston Churchill: studies in statesmanship. Edited by R. A. C. Parker. London and
Washington: Brassey's, 1995. Pp. xxi+259. ISBN 1-857-53151-5. £30.Winston Churchill's last campaign: Britain and the Cold War, 1951–1985.
By John W. Young. Oxford: Clarendon Press, 1996. ISBN 0-198-20367-5. £45.Churchill peacetime ministry, 1951–1955. By Henry Pelling. Basingstoke and London:
Macmillan, 1997. Pp. ix+216. ISBN 0-333-67709-9. £16.Churchill as peacemaker. Edited by James W. Muller. Cambridge: Woodrow Wilson
Center and Cambridge University Press, 1997. Pp. xii+344. ISBN 0-521-58314-4. £35.Churchill and secret service. By David Stafford. London: John Murray, 1997.
Pp. xiii+386. ISBN 0-719-55407-1. £25.Churchill and Hitler, in victory and defeat. By John Strawson.
London: Constable, 1997. Pp. xxxi+540. ISBN 0-094-75840-9. £20.Over the course of the last decade, historians have set themselves the task of rescuing
Churchill from the restrictive embalmment of hero worship. This has been no easy task.
His 1930s campaign for rearmament and opposition to appeasement, his ‘finest hour’
in 1940, and his 1946 ‘Iron Curtain’ speech at Fulton, Missouri, secured for him on
both sides of the Atlantic an almost unparalleled relevance in the rhetoric of the
following forty years' Cold War. To Western politicians of this period, his career offered
pertinent ‘lessons’ – particularly the need to appear resolute in the face or threat of
aggression. To this was added the fact that his magnificent command of English made
him a rich quarry of quasi-prophetic quotes for an endless succession of political
speeches and journalistic articles.