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We encourage you to perform a real-time search of NLEBeta
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1

Overview o floating point  

E-Print Network (OSTI)

condition codes and branches are same as for single-precision o absolute value and negation can Co-processor o Integer, BCD, and floating point representations o floating point have sign instructions) or even popped twice (FCOMPP) o tests set condition codes: - C0: less or unordered

Biagioni, Edoardo S.

2

Floating point only SIMD instruction set architecture including compare, select, Boolean, and alignment operations  

DOE Patents (OSTI)

Mechanisms for implementing a floating point only single instruction multiple data instruction set architecture are provided. A processor is provided that comprises an issue unit, an execution unit coupled to the issue unit, and a vector register file coupled to the execution unit. The execution unit has logic that implements a floating point (FP) only single instruction multiple data (SIMD) instruction set architecture (ISA). The floating point vector registers of the vector register file store both scalar and floating point values as vectors having a plurality of vector elements. The processor may be part of a data processing system.

Gschwind, Michael K. (Chappaqua, NY)

2011-03-01T23:59:59.000Z

3

Improving Floating Point Compression  

NLE Websites -- All DOE Office Websites (Extended Search)

Improving Improving Floating Point Compression through Binary Masks Leonardo A. Bautista Gomez Argonne National Laboratory Franck Cappello Argonne National Laboratory Abstract-Modern scientific technology such as particle accel- erators, telescopes and supercomputers are producing extremely large amounts of data. That scientific data needs to be processed using systems with high computational capabilities such as supercomputers. Given that the scientific data is increasing in size at an exponential rate, storing and accessing the data is becoming expensive in both, time and space. Most of this scientific data is stored using floating point representation. Scientific applications executed in supercomputers spend a large amount of CPU cycles reading and writing floating point values, making data compression techniques an interesting way to increase computing efficiency.

4

IEEE Standard unifies arithmetic model Floating points  

E-Print Network (OSTI)

calls this quantity eps, which is short for machine epsilon. eps = 2^(­52) What is the output? a = 4/3 b of eps. The approximate decimal value of eps is 2.2204 · 10-16 . Either eps/2or eps can be called is rounded to the nearest floating-point number is eps/2. The maximum relative spacing between numbers is eps

Beron-Vera, Francisco Javier

5

Evaluating Energy Efficiency of Floating Point Matrix Multiplication on FPGAs  

E-Print Network (OSTI)

Evaluating Energy Efficiency of Floating Point Matrix Multiplication on FPGAs Kiran Kumar Matam, prasanna}@usc.edu Abstract--Energy efficiency has emerged as one of the key performance metrics in scientific computing. In this work, we evaluate the energy efficiency of floating point matrix multipli

Prasanna, Viktor K.

6

A rapid-approximation floating-point mathematics package for the INTEL 8080 microprocessor  

E-Print Network (OSTI)

or floating-point format for maximum storage utilization. However, values output for human interpreta- tion should normally be in the Binary Coded Decimal (BCD), the Extended Binary Coded Decimal Interchange Code (EBCDIC), or the American Standard Code... be formatted in the BCD representation code. Second, externally stored numeric data must be in the logarithmic format. Additionally, operands must be con- verted to the floating-point format before all addition or subtraction operations. The mathematics...

Cariker, Earnest Allan

2012-06-07T23:59:59.000Z

7

Compositional analysis of floating-point linear numerical filters  

E-Print Network (OSTI)

Compositional analysis of floating-point linear numerical filters David Monniaux CNRS / Laboratoire filters are used in a variety of applications (sound treatment, control/command, etc.), implemented experience with the Astr´ee static analyzer [3] is that precise analysis of the numerical behavior

Monniaux, David

8

A Combined Decimal and Binary Floating-point Divider  

E-Print Network (OSTI)

to most recent decimal divider designs, which are based on the Binary Coded Decimal (BCD) encoding, our Integer Decimal (BID) encoding. DPD is a compressed form of the Binary Coded Decimal (BCD) encoding on the BCD encoding [3],[4],[5], using the DPD encoding for floating-point and the BCD encoding for fixed

Nannarelli, Alberto

9

Software Aspects of IEEE Floating-Point Computations for Numerical Applications in High Energy Physics  

ScienceCinema (OSTI)

Floating-point computations are at the heart of much of the computing done in high energy physics. The correctness, speed and accuracy of these computations are of paramount importance. The lack of any of these characteristics can mean the difference between new, exciting physics and an embarrassing correction. This talk will examine practical aspects of IEEE 754-2008 floating-point arithmetic as encountered in HEP applications. After describing the basic features of IEEE floating-point arithmetic, the presentation will cover: common hardware implementations (SSE, x87) techniques for improving the accuracy of summation, multiplication and data interchange compiler options for gcc and icc affecting floating-point operations hazards to be avoided About the speaker Jeffrey M Arnold is a Senior Software Engineer in the Intel Compiler and Languages group at Intel Corporation. He has been part of the Digital->Compaq->Intel compiler organization for nearly 20 years; part of that time, he worked on both low- and high-level math libraries. Prior to that, he was in the VMS Engineering organization at Digital Equipment Corporation. In the late 1980s, Jeff spent 2 years at CERN as part of the CERN/Digital Joint Project. In 2008, he returned to CERN to spent 10 weeks working with CERN/openlab. Since that time, he has returned to CERN multiple times to teach at openlab workshops and consult with various LHC experiments. Jeff received his Ph.D. in physics from Case Western Reserve University.

None

2011-10-06T23:59:59.000Z

10

A bit-serial floating point multiply/add architecture for signal processing applications  

E-Print Network (OSTI)

Add . . . . . . . . . . 5 I I I . DESIGN CONSIDERATIONS . . . . . ~, ~ ~ ~ ~ ~ 8 State of the Art e . 8 The Floating Point Format. . . . ~ . ~ ~ . 14 The Bit-Serial Architectures . . . . . . . 19 Pipelined Architecture for a Serial Data Path... Point Muit'Iplier Block Diagram 12 3. General Sequentiaf Multiplier Block Diagram . 13 4. Bit-Serfal Multiplier Block Diagram 15 5. IEEE 32-bit Floating Point Format. . . . . . 17 6. Reduced Floating Point Format 18 7. The Bit-Serial Architecture...

Williams, Bertrand Jeffery

2012-06-07T23:59:59.000Z

11

Experimental Wave Tank Test for Reference Model 3 Floating-Point...  

NLE Websites -- All DOE Office Websites (Extended Search)

Experimental Wave Tank Test for Reference Model 3 Floating- Point Absorber Wave Energy Converter Project Y.-H. Yu, M. Lawson, and Y. Li National Renewable Energy Laboratory M....

12

HIGHER RADIX FLOATING-POINT REPRESENTATIONS FOR FPGA-BASED ARITHMETIC  

E-Print Network (OSTI)

will provide an order of magnitude greater sustained floating-point throughput than conventional processors [1 materials including figures, tables, and charts are in place; and (3) the final manuscript is satisfactory

13

Generating and executing programs for a floating point single instruction multiple data instruction set architecture  

DOE Patents (OSTI)

Mechanisms for generating and executing programs for a floating point (FP) only single instruction multiple data (SIMD) instruction set architecture (ISA) are provided. A computer program product comprising a computer recordable medium having a computer readable program recorded thereon is provided. The computer readable program, when executed on a computing device, causes the computing device to receive one or more instructions and execute the one or more instructions using logic in an execution unit of the computing device. The logic implements a floating point (FP) only single instruction multiple data (SIMD) instruction set architecture (ISA), based on data stored in a vector register file of the computing device. The vector register file is configured to store both scalar and floating point values as vectors having a plurality of vector elements.

Gschwind, Michael K

2013-04-16T23:59:59.000Z

14

T-561: IBM and Oracle Java Binary Floating-Point Number Conversion Denial  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

61: IBM and Oracle Java Binary Floating-Point Number Conversion 61: IBM and Oracle Java Binary Floating-Point Number Conversion Denial of Service Vulnerability T-561: IBM and Oracle Java Binary Floating-Point Number Conversion Denial of Service Vulnerability February 21, 2011 - 7:00am Addthis PROBLEM: IBM and Oracle Java Binary Floating-Point Number Conversion Denial of Service Vulnerability. PLATFORM: The following Java products are affected: Java SE: Oracle JDK and JRE 6 Update 23 and prior for Windows, Solaris, and Linux Oracle JDK 5.0 Update 27 and prior for Solaris 9 Oracle SDK 1.4.2_29 and prior for Solaris 8 IBM JDK 6 Update SR9 and prior IBM JDK 5 Update SR12-FP3 and prior IBM JDK 1.4.2 Update SR13-FP8 and prior Java for Business: Oracle JDK and JRE 6 Update 23 and prior for Windows, Solaris, and Linux Oracle JDK and JRE 5.0 Update 27 and prior for Windows, Solaris, and Linux

15

A flexible floating-point wavelet transform and wavelet packet processor  

Science Journals Connector (OSTI)

The richness of wavelet transformation is known in many fields. There exist different classes of wavelet filters that can be used depending on the application. In this paper, we propose an IEEE 754 floating-point lifting-based wavelet processor that ...

Andre Guntoro; Manfred Glesner

2009-04-01T23:59:59.000Z

16

Solving Constraints on the Invisible Bits of the Intermediate Result for Floating-Point Verification  

E-Print Network (OSTI)

Solving Constraints on the Invisible Bits of the Intermediate Result for Floating as the invisible bits. We deal with corner cases that can only be defined via constraints on the intermediate on the invisible bits and the sticky bit, find two inputs for the operation that yield an intermediate result

California at Davis, University of

17

Topsides equipment, operating flexibility key floating LNG design  

SciTech Connect

Use of a large-scale floating liquefied natural gas (LNG) plant is an economical alternative to an onshore plant for producing from an offshore field. Mobil Technology Co., Dallas, has advanced a design for such a plant that is technically feasible, economical, safe, and reliable. Presented were descriptions of the general design basis, hull modeling and testing, topsides and storage layouts, and LNG offloading. But such a design also presents challenges for designing topsides equipment in an offshore environment and for including flexibility and safety. These are covered in this second article. Mobil`s floating LNG plant design calls for a square concrete barge with a moon-pool in the center. It is designed to produce 6 million tons/year of LNG with up to 55,000 b/d of condensate from 1 bcfd of raw feed gas.

Yost, K.; Lopez, R.; Mok, J. [Mobil E and P Technology Co., Dallas, TX (United States)

1998-03-09T23:59:59.000Z

18

Experimental Investigation of the Power Generation Performance of Floating-Point Absorber Wave Energy Systems: Preprint  

SciTech Connect

The extraction of energy from ocean waves has gained interest in recent years. The floating-point absorber (FPA) is one of the most promising devices among a wide variety of wave energy conversion technologies. Early theoretical studies mainly focused on understanding the hydrodynamics of the system and on predicting the maximum power that could be extracted by a heaving body. These studies evolve from the investigation of floating-body interactions in offshore engineering and naval architecture disciplines. To our best knowledge, no systematic study has been reported about the investigation of the power generation performance of an FPA with a close-to-commercial design. A series of experimental tests was conducted to investigate the power extraction performance of an FPA system.

Li, Y.; Yu, Y.; Epler, J.; Previsic, M.

2012-04-01T23:59:59.000Z

19

float.h  

E-Print Network (OSTI)

/* float.h Defines implementation specific macros for dealing with floating point. Copyright (c) Borland International 1987 All Rights Reserved. */ #if __STDC__...

20

RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

RANS Simulation of the Heave RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber Preprint Y. Yu and Y. Li To be presented at ISOPE 2011 Maui, Hawaii June 19-24, 2011 Conference Paper NREL/CP-5000-50980 March 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty,

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Effect analysis of Reliability, Availability, Maintainability and Safety (RAMS ) Parameters in design and operation of Dynamic Positioning (DP) systems in floating offshore structures.  

E-Print Network (OSTI)

?? The objective of this thesis is to identify, which hazards and failures in operation process will affect Reliability, Availability, Maintainability and Safety of floating (more)

Ebrahimi, Ali

2010-01-01T23:59:59.000Z

22

Preliminary Results of a RANS Simulation for a Floating Point Absorber Wave Energy System Under Extreme Wave Conditions  

NLE Websites -- All DOE Office Websites (Extended Search)

Preliminary Results of a RANS Preliminary Results of a RANS Simulation for a Floating Point Absorber Wave Energy System Under Extreme Wave Conditions Y. Yu and Y. Li Presented at the 30 th International Conference on Ocean, Offshore, and Arctic Engineering Rotterdam, The Netherlands June 19 - 24, 2011 Conference Paper NREL/CP-5000-50967 October 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

23

Floating Breakwaters  

Science Journals Connector (OSTI)

The engineering and subsequent construction of the Bombardon floating break-waters was an important episode in the historical development of floating break-water technology. These floating structures were el...

J. R. Headland

1995-01-01T23:59:59.000Z

24

Computing Three-Point Functions for Short Operators  

E-Print Network (OSTI)

We compute the three-point structure constants for short primary operators of N=4 super Yang-Mills theory to leading order in the inverse coupling by mapping the problem to a flat-space string theory calculation. We check the validity of our procedure by comparing to known results for three chiral primaries. We then compute the three-point functions for any combination of chiral and non-chiral primaries, with the non-chiral primaries all dual to string states at the first massive level. Along the way we find many cancellations that leave us with simple expressions, suggesting that integrability is playing an important role.

Till Bargheer; Joseph A. Minahan; Raul Pereira

2014-04-14T23:59:59.000Z

25

AN ARTICULATED LIMNOLOGICAL FLOAT  

Science Journals Connector (OSTI)

Sot. 1964). However, there re- main as primary problems the cost of fabri- cating a float and placing it and reduction of the motion imparted to the float and itr.

2000-01-08T23:59:59.000Z

26

MHK Technologies/Floating absorber | Open Energy Information  

Open Energy Info (EERE)

absorber absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Floating absorber.jpg Technology Profile Primary Organization Euro Wave Energy Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The main module consists of Two drive wheels on each side of the vertical running rod which always move in the opposite direction A unique connection of two camclutches which operate such that at all time the correct rotating direction in one of the drive wheels run the generator Generator and buoyancy elements Technology Dimensions Device Testing Date Submitted 27:29.6

27

MHK Technologies/IVEC Floating Wave Power Plant | Open Energy Information  

Open Energy Info (EERE)

IVEC Floating Wave Power Plant IVEC Floating Wave Power Plant < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage IVEC Floating Wave Power Plant.jpg Technology Profile Primary Organization Ivec Pty Ltd Technology Resource Click here Wave Technology Readiness Level Click here TRL 7 8 Open Water System Testing Demonstration and Operation Technology Description FWP design is based on an array of linked OWC s or chambers Similar to the cylinders of a combustion engine each FWP chamber has inlet low pressure flaps valves and outlet high pressure flaps valves As a wave passes through the FWP the water level and thus the air pressure within each chamber oscillates depending on its position within the wave cycle Mooring Configuration single point

28

MHK Technologies/Hybrid Float | Open Energy Information  

Open Energy Info (EERE)

Float Float < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Hybrid Float.jpg Technology Profile Primary Organization PerpetuWave Power Pty Ltd Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Elongated floats operate parallel to the wave fronts so that maximum energy extraction from the waves is possible by the large cross sectional area of the floats to be immersed in a wave front at once and thence moved upwards with the wave A further major feature of the Technology is the motion of the floats that due to the trailing arm type design move backwards as well as upwards so that the energy in the moving water and of any breaking waves on the floats is transferred to useable energy of the float by forcing the floats backwards as well as upwards This motion mimics the motion of an unattached float on the surface of the water as waves pass This is unique to our technology and combined with the large cross sectional area offered by the float design in the highest pulse loading possible This is repeated a number of times as a wave passes through with a resultant optimum energy extraction from the wave Below the vessel are fixed horizontal staliser plates that limit the r

29

MANGO Modal Analysis for Grid Operation: A Method for Damping Improvement through Operating Point Adjustment  

SciTech Connect

Small signal stability problems are one of the major threats to grid stability and reliability in the U.S. power grid. An undamped mode can cause large-amplitude oscillations and may result in system breakups and large-scale blackouts. There have been several incidents of system-wide oscillations. Of those incidents, the most notable is the August 10, 1996 western system breakup, a result of undamped system-wide oscillations. Significant efforts have been devoted to monitoring system oscillatory behaviors from measurements in the past 20 years. The deployment of phasor measurement units (PMU) provides high-precision, time-synchronized data needed for detecting oscillation modes. Measurement-based modal analysis, also known as ModeMeter, uses real-time phasor measurements to identify system oscillation modes and their damping. Low damping indicates potential system stability issues. Modal analysis has been demonstrated with phasor measurements to have the capability of estimating system modes from both oscillation signals and ambient data. With more and more phasor measurements available and ModeMeter techniques maturing, there is yet a need for methods to bring modal analysis from monitoring to actions. The methods should be able to associate low damping with grid operating conditions, so operators or automated operation schemes can respond when low damping is observed. The work presented in this report aims to develop such a method and establish a Modal Analysis for Grid Operation (MANGO) procedure to aid grid operation decision making to increase inter-area modal damping. The procedure can provide operation suggestions (such as increasing generation or decreasing load) for mitigating inter-area oscillations.

Huang, Zhenyu; Zhou, Ning; Tuffner, Francis K.; Chen, Yousu; Trudnowski, Daniel J.; Diao, Ruisheng; Fuller, Jason C.; Mittelstadt, William A.; Hauer, John F.; Dagle, Jeffery E.

2010-10-18T23:59:59.000Z

30

The floating water bridge The floating water bridge  

E-Print Network (OSTI)

The floating water bridge The floating water bridge Elmar C. Fuchs1 , Jakob Woisetschläger2 , Karl, a stable water connection forms spontaneously, giving the impression of a floating water bridge. A detailed this bridge. 1. Introduction Water undoubtedly is the most important chemical substance in the world. Many

Podgornik, Rudolf

31

Compound floating pivot micromechanisms  

DOE Patents (OSTI)

A new class of tilting micromechanical mechanisms have been developed. These new mechanisms use compound floating pivot structures to attain far greater tilt angles than are practical using other micromechanical techniques. The new mechanisms are also capable of bi-directional tilt about multiple axes.

Garcia, Ernest J. (Albuquerque, NM)

2001-04-24T23:59:59.000Z

32

ATP-c-S shifts the operating point of outer hair cell transduction towards scala tympani  

E-Print Network (OSTI)

ATP-c-S shifts the operating point of outer hair cell transduction towards scala tympani Richard P November 2004; accepted 16 February 2005 Available online 22 March 2005 Abstract ATP receptor agonists (DPOAE). Some of the effects on DPOAEs are consistent with the hypothesis that ATP affects mechano

Salt, Alec N.

33

Free Floating Atmospheric Pressure Ball Plasmas  

NLE Websites -- All DOE Office Websites (Extended Search)

Free-Floating Atmospheric Pressure Ball Plasmas Free-Floating Atmospheric Pressure Ball Plasmas G. A. Wurden, Z. Wang, C. Ticos Los Alamos National Laboratory L Al NM 87545 USA Los Alamos, NM 87545 USA C. J. v. Wurden Los Alamos High School L Al NM 87544 Los Alamos, NM 87544 Presented at the PPPL Colloquium Sept. 17, 2008 U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA LA-UR-08-06284 Outline of this talk *A discussion of ball lightning reports in nature *How can ball plasmas be made in the laboratory? *Detailed experiments on long lived free floating *Detailed experiments on long-lived free-floating atmospheric pressure ball plasmas C i f l b b ll l i h "b ll *Comparison of laboratory ball plasmas with "ball lightning" *Summary U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA

34

Hidden force floating ice  

E-Print Network (OSTI)

Because of the segmental specific-heat disparity of the hydrogen bond (O:H-O) and the Coulomb repulsion between oxygen ions, cooling elongates the O:H-O bond at freezing by stretching its containing angle and shortening the H-O bond with an association of larger O:H elongation, which makes ice less dense than water, allowing it to float.

Chang Q. Sun

2015-01-17T23:59:59.000Z

35

Motion of floating wind turbines.  

E-Print Network (OSTI)

?? Motion of floating wind turbines has been studied. A literature study on different concepts and what tools are available for simulating them is presented. (more)

Linde, Brge

2010-01-01T23:59:59.000Z

36

Tide operated power generating apparatus  

SciTech Connect

An improved tide operated power generating apparatus is disclosed in which a hollow float, rising and falling with the ocean tide, transmits energy to a power generator. The improvement comprises means for filling the float with water during the incoming tide to provide a substantial increase in the float dead weight during the outgoing tide. Means are further provided to then empty the float before the outgoing tide whereby the float becomes free to rise again on the next incoming tide.

Kertzman, H. Z.

1981-02-03T23:59:59.000Z

37

Floating solar pool heater  

SciTech Connect

A floating solar heater for swimming pools is disclosed which includes a top cover, a vertical outer side wall with inclined inner side wall segments connected thereto, an outside rim and a bottom wall. The inner side wall segments are octagonal, coated with light reflective material, and aid in reflecting the sun's rays to heat the space inside the walls formed by the cover which dead air space also provides for floatation of the heater. The bottom wall is heated by direct sun inpingement and by the air in contact with it and is formed of a material having high heat conductivity.

McCluskey, J.E.

1981-08-18T23:59:59.000Z

38

MHK Technologies/Float Wave Electric Power Station | Open Energy  

Open Energy Info (EERE)

Wave Electric Power Station Wave Electric Power Station < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Float Wave Electric Power Station.jpg Technology Profile Primary Organization Applied Technologies Company Ltd Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description The module of FWEPS is an oblong axisymmetrical capsule float which is located on the sea surface Inside the capsule there is a mechanical wave energy converter consisting of an oscillatory system and drive and an electric generator and energy accumulator Under the wave effect the capsule float and inner oscillatory system of the mechanical converter are in continuous oscillatory motion while the drive engaged with the system provides a continuous turn for the electric generator

39

Floating Silicon Method  

SciTech Connect

The Floating Silicon Method (FSM) project at Applied Materials (formerly Varian Semiconductor Equipment Associates), has been funded, in part, by the DOE under a Photovoltaic Supply Chain and Cross Cutting Technologies grant (number DE-EE0000595) for the past four years. The original intent of the project was to develop the FSM process from concept to a commercially viable tool. This new manufacturing equipment would support the photovoltaic industry in following ways: eliminate kerf losses and the consumable costs associated with wafer sawing, allow optimal photovoltaic efficiency by producing high-quality silicon sheets, reduce the cost of assembling photovoltaic modules by creating large-area silicon cells which are free of micro-cracks, and would be a drop-in replacement in existing high efficiency cell production process thereby allowing rapid fan-out into the industry.

Kellerman, Peter

2013-12-21T23:59:59.000Z

40

Theory of Operation  

E-Print Network (OSTI)

This ; implementation provides ~18k words of free space with ; the floating point interpreter, compared to ~16k words ; with the distributed version. In contrast, a...

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Electrically floating, near vertical incidence, skywave antenna  

DOE Patents (OSTI)

An Electrically Floating, Near Vertical Incidence, Skywave (NVIS) Antenna comprising an antenna element, a floating ground element, and a grounding element. At least part of said floating ground element is positioned between said antenna element and said grounding element. The antenna is separated from the floating ground element and the grounding element by one or more electrical insulators. The floating ground element is separated from said antenna and said grounding element by one or more electrical insulators.

Anderson, Allen A.; Kaser, Timothy G.; Tremblay, Paul A.; Mays, Belva L.

2014-07-08T23:59:59.000Z

42

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

for floating turbines [4]. ..15 Figure 3.1: Floating turbine degrees of freedom [the motion of a 5 MW floating turbine subjected to ocean

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

43

Flexible dynamics of floating wind turbines  

E-Print Network (OSTI)

This work presents Tower Flex, a structural dynamics model for a coupled analysis of offshore floating wind turbines consisting of a tower, a floating platform and a mooring system. In this multi-body, linear frequency-domain ...

Luypaert, Thomas (Thomas J.)

2012-01-01T23:59:59.000Z

44

Floating Robots Track Water Flow With Smartphones  

NLE Websites -- All DOE Office Websites (Extended Search)

Floating Robots Track Water Flow, Stream Data via Smartphones Floating Robots Track Water Flow, Stream Data via Smartphones May 9, 2012 | Tags: Carver Jon Bashor, Jbashor@lbl.gov,...

45

Morphisms of ANN and the Computation of Least Fixed Points of Semantic Operators  

E-Print Network (OSTI)

consequence operator TP can be computed by the colimit of a family of neural networks determined by P. 1 is the computation by ANN of the operators P , such as the immediate consequence operator TP , de- termined the structure of ANN, and one should expect iso- morphic ANN to compute the same function. (Alternatively, one

Seda, Anthony Karel

46

Providing full point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer  

DOE Patents (OSTI)

Methods, apparatus, and products are disclosed for providing full point-to-point communications among compute nodes of an operational group in a global combining network of a parallel computer, each compute node connected to each adjacent compute node in the global combining network through a link, that include: receiving a network packet in a compute node, the network packet specifying a destination compute node; selecting, in dependence upon the destination compute node, at least one of the links for the compute node along which to forward the network packet toward the destination compute node; and forwarding the network packet along the selected link to the adjacent compute node connected to the compute node through the selected link.

Archer, Charles J; Faraj, Ahmad A; Inglett, Todd A; Ratterman, Joseph D

2013-04-16T23:59:59.000Z

47

Fluidic lens of floating oil using round-pot chamber based on electrowetting  

Science Journals Connector (OSTI)

This study presents a liquid lens using electrowetting that employs an oil phase floating in between the conducting fluids. The lens shape has double-sided surfaces and operates with a...

Choi, Hyunhwan; Won, Yonghyub

2013-01-01T23:59:59.000Z

48

Floating oil production unit slated in small field off Gabon  

SciTech Connect

This paper reports on the first U.S. tanker converted to a floating production, storage, and offloading (FPSO) unit which takes up station in Gombe-Beta field off Gabon by Dec. 1. FPSO Ocean Producer will work under a 3 year, day rate contract let late in 1990 by Amoco-Gabon Bombe Marin co., a unit of Amoco Production Co. (OGJ, Dec. 24, 1990, p. 27). Gombe-Beta field is in the Atlantic Ocean about 70 miles south of Port Gentil, Gabon. Ocean Producer will be moored in 50 ft of water 3.7 miles off Gabon, with Bombe-Beta's unmanned production platform about 820 ft astern. The vessel will be held in position by a disconnectable, asymmetric, six point, spread mooring system, It is owned and operated by Oceaneering International Services Ltd. (OISL). Affiliate Oceaneering Production Systems (OPS) converted the 78,061 dwt oil tanker MT Baltimore Sea at a capital cost of $25 million at Gulf Copper Manufacturing Corp.'s Port Arthur, Tex., shipyard. Both companies are units of Oceaneering International Inc., Houston. OPS the Ocean Producer's use in Gombe-Beta field is the shallowest water FPSO application in the world. Amoco-Gabon chose an FPSO production system for Gombe-Beta because it expects the remote field to have a short economic life, and the oil requires extensive processing.

Not Available

1991-10-14T23:59:59.000Z

49

Life-cycle cost analysis of floating offshore wind farms  

Science Journals Connector (OSTI)

Abstract The purpose of this article is to put forward a methodology in order to evaluate the Cost Breakdown Structure (CBS) of a Floating Offshore Wind Farm (FOWF). In this paper CBS is evaluated linked to Life-Cycle Cost System (LCS) and taking into account each of the phases of the FOWF life cycle. In this sense, six phases will be defined: definition, design, manufacturing, installation, exploitation and dismantling. Each and every one of these costs can be subdivided into different sub-costs in order to obtain the key variables that run the life-cycle cost. In addition, three different floating platforms will be considered: semisubmersible, Tensioned Leg Platform (TLP) and spar. Several types of results will be analysed according to each type of floating platform considered: the percentage of the costs, the value of the cost of each phase of the life-cycle and the value of the total cost in each point of the coast. The results obtained allow us to become conscious of what the most important costs are and minimize them, which is one of the most important contributions nowadays. It will be useful to improve the competitiveness of floating wind farms in the future.

Castro-Santos Laura; Diaz-Casas Vicente

2014-01-01T23:59:59.000Z

50

Energy Solution for Floating LNG Production System.  

E-Print Network (OSTI)

?? This report considers different energy solutions for a floating LNG production vessel. The two alternatives analyzed are gas turbine and steam turbine. In addition (more)

Andersen, Magnus Nordahl

2012-01-01T23:59:59.000Z

51

Dynamic Response of Floating Wind Turbines.  

E-Print Network (OSTI)

?? In this thesis the extreme values of tension in the mooring lines on Hywind Demo is investigated. Hywind Demo is a floating wind turbine (more)

Neuenkirchen God, Sjur

2013-01-01T23:59:59.000Z

52

Microsoft PowerPoint - Entergy-Hydro-Operations_Smethers [Compatibility Mode]  

NLE Websites -- All DOE Office Websites (Extended Search)

Ouachita River System Ouachita River System LAKE OUACHITA CITY OF HOT SPRINGS LAKE CATHERINE Blakely Mountain Dam LAKE HAMITLON Carpenter Dam Remmel Dam 1 OUACHITA RIVER DeGray Lake & Dam Blakely Mtn. Dam/Lake Ouachita * Built in 1955 * forms Lake Ouachita * Owned & Operated by ACOE * 2 Units - 6600 CFS * 84 MW @178 ft. Head * AGC Capable Large volume of water * Large volume of water storage * Flood Control is a project purpose 2 project purpose Lake Hamilton / Lake Catherine * 6,897 acres surface * 198 miles shoreline * 1,642 acres surface * 56 miles shoreline * 198 miles shoreline * 70% shoreline developed * 50% of shoreline developed developed * 3,863 docks * 10 270 buildings * 399 docks * 1,391 buildings * 10,270 buildings within 500 ft. of shoreline , g within 500 ft. of shoreline 3 * Highly Developed * Highly Developed

53

Minimal regularity conditions for the end-point estimate of bilinear Caldern-Zygmund operators  

E-Print Network (OSTI)

(1.5) |??m(?)| #2; |?|?|?| for all |?| ? [n/2] + 1 and the weaker Hormander [14] condition (1.6) sup j?Z ?m(2j )??L2s(Rn) n/2, where ? is a smooth bump supported away from the origin and L2s is the usual Sobolev space, imply (1... be in the case of multipliers. If we again consider m as a Fourier multiplier in R2n, then (1.10) is just Hor- manders condition, and we have for the kernel of the corresponding linear operator in R2n for any y, z ? Rn ? |y?y?|+|z?z?|?c|x1?y|+|x2?z| |K(x1 ? y...

Perez, Carlos; Torres, Rodolfo H.

2014-01-09T23:59:59.000Z

54

Vertical pump with free floating check valve  

DOE Patents (OSTI)

A vertical pump with a bottom discharge having a free floating check valve isposed in the outlet plenum thereof. The free floating check valve comprises a spherical member with a hemispherical cage-like member attached thereto which is capable of allowing forward or reverse flow under appropriate conditions while preventing reverse flow under inappropriate conditions.

Lindsay, Malcolm (O'Hara Township, Allegheny County, PA)

1980-01-01T23:59:59.000Z

55

EA-1792: University of Maine's Deepwater Offshore Floating Wind...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine EA-1792: University of Maine's Deepwater Offshore Floating Wind...

56

Dirac point and transconductance of top-gated graphene field-effect transistors operating at elevated temperature  

SciTech Connect

Top-gated graphene field-effect transistors (GFETs) have been fabricated using bilayer epitaxial graphene grown on the Si-face of 4H-SiC substrates by thermal decomposition of silicon carbide in high vacuum. Graphene films were characterized by Raman spectroscopy, Atomic Force Microscopy, Scanning Tunnelling Microscopy, and Hall measurements to estimate graphene thickness, morphology, and charge transport properties. A 27?nm thick Al{sub 2}O{sub 3} gate dielectric was grown by atomic layer deposition with an e-beam evaporated Al seed layer. Electrical characterization of the GFETs has been performed at operating temperatures up to 100?C limited by deterioration of the gate dielectric performance at higher temperatures. Devices displayed stable operation with the gate oxide dielectric strength exceeding 4.5 MV/cm at 100?C. Significant shifting of the charge neutrality point and an increase of the peak transconductance were observed in the GFETs as the operating temperature was elevated from room temperature to 100?C.

Hopf, T.; Vassilevski, K. V., E-mail: k.vasilevskiy@ncl.ac.uk; Escobedo-Cousin, E.; King, P. J.; Wright, N. G.; O'Neill, A. G.; Horsfall, A. B.; Goss, J. P. [School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU (United Kingdom); Wells, G. H.; Hunt, M. R. C. [Department of Physics, Durham University, Durham DH1 3LE (United Kingdom)

2014-10-21T23:59:59.000Z

57

Parametric design of floating wind turbines  

E-Print Network (OSTI)

As the price of energy increases and wind turbine technology matures, it is evident that cost effective designs for floating wind turbines are needed. The next frontier for wind power is the ocean, yet development in near ...

Tracy, Christopher (Christopher Henry)

2007-01-01T23:59:59.000Z

58

Advanced controls for floating wind turbines  

E-Print Network (OSTI)

Floating Offshore Wind Turbines (FOWT) is a technology that stands to spearhead the rapid growth of the offshore wind energy sector and allow the exploration of vast high quality wind resources over coastal and offshore ...

Casanovas, Carlos (Casanovas Bermejo)

2014-01-01T23:59:59.000Z

59

The Green's function of a five-point discretization of a two-dimensional finite-gap Schrdinger operator: the case of four singular points of the spectral curve  

E-Print Network (OSTI)

Consider a five-point discretization of a two-dimensional finite-gap for a fixed energy Schr\\"{o}dinger operator. We construct the Green's function of the operator. In appears as the explicit formula in terms of the integral by the specific contour on the spectral curve of the differential which is constructed by the wave function and its double. The formula is parametrized by the point on the spectral curve and for almost every parameter value it gives the Green's function with known growth at infinity.

Vasilevskiy Boris

2014-02-12T23:59:59.000Z

60

Modifications in the Technical Specifications: Dual piston in series pump with servo-controlled variable stroke drive, floating pistons is with specs  

E-Print Network (OSTI)

Modifications in the Technical Specifications: Pump: Dual piston in series pump with servo-controlled variable stroke drive, floating pistons is with specs mentioned below are acceptable Set points 0.001 - 10

Bhalla, Upinder S.

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

A stochastic programming approach for optimal microgrid economic operation under uncertainty using 2m?+?1 point estimate method  

Science Journals Connector (OSTI)

By increasing concern over climate change and the security of energy supplies wind power and photovoltaic are emerging as important sources of electrical energy throughout the world. The wind speed at a given location is continuously varying. There are changes in the annual mean wind speed from year to year (annual) changes with season (seasonal) with passing weather systems (synoptic) on a daily basis (diurnal) and from second to second (turbulence). Common sense tells us that irradiation varies regionally with the changing seasons and hourly with the daily variation of the sun's evaluation. This paper proposes a new method for optimal management of MicroGrids under uncertain environments. In this study the 2m?+?1 point estimate method is used to model the uncertainty in the load demands the market prices and the electric power generation of the wind farms and the photovoltaic systems. The Weibull Beta and normal distributions are used to handle the uncertain input variables in this study. Moreover a Self-Adaptive Bee Swarm Optimization algorithm is presented to achieve an optimal-operational planning with regard to the cost minimization. In the proposed framework four different moving patterns are suggested in order to make an adaptive and robust optimization algorithm for different problems with different fitness landscape. In the devised method each bee self-adaptively chooses one of the proposed moving patterns according to a probability model to update its position. The proposed probability model is based on the ability of each strategy to generate more optimal solutions in the past generations. The efficiency of the method is validated on a typical microgrid.

2013-01-01T23:59:59.000Z

62

Floating Windfarms Corporation | Open Energy Information  

Open Energy Info (EERE)

Windfarms Corporation Windfarms Corporation Jump to: navigation, search Name Floating Windfarms Corporation Place Houston, Texas Zip 77060 Sector Wind energy Product Texas-based offshore wind power developer that uses floating and non-floating vertical axis wind turbines to generate power. Coordinates 29.76045°, -95.369784° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.76045,"lon":-95.369784,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

63

Effect of a floating electrode on an atmospheric-pressure non-thermal arc discharge  

Science Journals Connector (OSTI)

Characteristics of the atmospheric non-thermal ac arc air plasmas produced by a plasma generator with a floating electrode are investigated. The measurements show that with the help of the surface dielectric barrier discharges between the main electrodes and the floating electrode the ignition voltage of the non-thermal arc discharges can be reduced significantly and an arc discharge mode can be stabilized at high gas flow rates. The measuredtemperatures of the non-thermal arcs are at the level of 20003000 K under different operating conditions.

Zhi-Bin Wang; Guo-Xu Chen; Zhe Wang; Nan Ge; He-Ping Li; Cheng-Yu Bao

2011-01-01T23:59:59.000Z

64

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

1985. 23. Hau, E. Wind Turbines: Fundamentals, Technologies,for Floating Offshore Wind Turbines. Tech. no. NREL/CP-500-Full-scale Floating Wind Turbine." Statoil, 14 Oct. 2009.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

65

Sandia National Laboratories: Study Compares Floating-Platform...  

NLE Websites -- All DOE Office Websites (Extended Search)

ClimateECEnergyStudy Compares Floating-Platform Options for Offshore Vertical-Axis Wind Turbines Study Compares Floating-Platform Options for Offshore Vertical-Axis Wind Turbines...

66

The Thermodynamic and Cost Benefits of Floating Cooling Systems  

E-Print Network (OSTI)

. The application of a floating cooling concept to evaporative heat rejection systems can have significant impact on improving plant performance. The floating cooling concept refers to the optimization of yearly plant output and energy consumption by taking...

Svoboda, K. J.; Klooster, H. J.; Johnnie, D. H., Jr.

1983-01-01T23:59:59.000Z

67

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

5-MW Reference Wind Turbine for Offshore System Development.for Floating Offshore Wind Turbines. Tech. no. NREL/CP-500-a Spar-type Floating Offshore Wind Turbine. Thesis. TU Delft

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

68

Effects of second-order difference-frequency wave forces on a new floating platform for an offshore wind turbine  

Science Journals Connector (OSTI)

This paper presents a study on an innovative floating platform for an offshore wind turbine operating at water depth of 50-80?m. The main focus is on hydrodynamic modelling of the floating platform with emphasis on the computation of second-order difference-frequency wave forces and their effects on the global rigid-body motion response. The time-domain analysis is conducted by coupling the wave analysis software WADAM of Det Norske Veritas and the aerodynamic code FAST of the National Renewable Energy Laboratory USA to consider the interaction between the wind turbine and floating platform. The numerical model accounts for aerodynamics control system of the wind turbine hydrodynamics and the mooring dynamics of the platform. Case studies with irregular waves and dynamic wind load are performed. A comparison of the results of different case studies is made to assess the influence of second-order wave forces on the motions of the floating platform.

A. Jiawen Li; B. Yougang Tang; C. Ronald W. Yeung

2014-01-01T23:59:59.000Z

69

MHK Technologies/MORILD 2 Floating Tidal Power System | Open Energy  

Open Energy Info (EERE)

MORILD 2 Floating Tidal Power System MORILD 2 Floating Tidal Power System < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage MORILD 2 Floating Tidal Power System.jpg Technology Profile Primary Organization Hydra Tidal Energy Technology AS Project(s) where this technology is utilized *MHK Projects/Morild 2 Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description Hydra Tidal´s Morild II tidal power plant technology at-a-glance: - A unique and patented floating tidal power plant - Prototype has an installed effect of 1,5 MW - Turbine diameter of 23 meters - Each turbine is pitchable - 4 turbines with a total of 8 turbine blades - Unique wooden turbine blades - The MORILD II can be anchored at different depths, thus it can be positioned in spots with ideal tidal stream conditions - The plant carries a sea vessel verification, and is both towable and dockable - The floating installation enables maintenance in surface position, and on site - The MORILD II will be remotely operated, and has on-shore surveillance systems - Technology patented for all relevant territories The Morild power plant is a floating, moored construction based on the same principle as horizontal axis wind turbines. The plant has 4 two-blade underwater turbines and can utilize the energy potential in tidal and ocean currents. The 4 turbines transmit power via hydraulic transmission to 2 synchronous generators. Can be pitched 180 degrees to utilize energy in both directions. A cable from the transformer on the prototype to shore transfers energy.

70

Improving the performance of floating solar pool covers  

SciTech Connect

Experimental and analytical analyses are presented for the evaluation of heat transfer through floating solar swimming pool covers. Two improved floating solar swimming pool cover designs are proposed and investigated in this paper. The results conclusively show that both new cover designs should have significantly better performance than conventional floating solar swimming pool covers.

Cole, M.A.; Lowrey, P. (San Diego State Univ., CA (United States). Dept. of Mechanical Engineering)

1992-11-01T23:59:59.000Z

71

The Influence of Operating Modes, Room Temperature Set Point and Curtain Styles on Energy Consumption of Room Air Conditioner  

E-Print Network (OSTI)

A field investigation was carried out in an office building of Changsha city in winter and summer, the influence of different running modes, curtain styles and room temperature set point on energy consumption of room air conditioner (RAC...

Yu, J.; Yang, C.; Guo, R.; Wu, D.; Chen, H.

2006-01-01T23:59:59.000Z

72

Can Oil Float Completely Submerged in Water?  

E-Print Network (OSTI)

Droplet formation in a system of two or more immiscible fluids is a celebrated topic of research in the fluid mechanics community. In this work, we propose an innovative phenomenon where oil when injected drop-wise into a pool of water moves towards the air-water interface where it floats in a fully submerged condition. The configuration, however, is not stable and a slight perturbation to the system causes the droplet to burst and float in partially submerged condition. The droplet contour is analyzed using edge detection. Temporal variation of a characteristic length of the droplet is analyzed using MATLAB image processing. The constraint of small Bond Number established the assumption of lubrication regime in the thin gap. A brief theoretical formulation also showed the temporal variation of the gap thickness

Nath, Saurabh; Chatterjee, Souvick

2013-01-01T23:59:59.000Z

73

Operation of a low temperature absorption chiller at rating point and at reduced evaporator temperature. Final report  

SciTech Connect

The returned SAM 015 (fifteen ton Solar Absorption Machine) chiller was given a cursory visual inspection, some obvious problems were remedied, and then it was placed on a test stand to get a measure of dirty performance. It was then given a standard acid clean, the water side of the tubes was brushed clean, and then the machine was retested. The before and after cleaning data were compared to equivalent data taken before the machine was shipped. The second part of our work statement was to experimentally demonstrate the technical feasibility of operating the chiller at evaporator temperatures below O/sup 0/C (32/sup 0/F) and identify any operational problems.

Best, R.; Biermann, W.; Reimann, R.

1985-01-01T23:59:59.000Z

74

Argo at PMEL: Intro http://floats.pmel.noaa.gov  

E-Print Network (OSTI)

, CTD -Check pneumatics -Replace batteries: alkaline -> lithium, increases float longevity -Check deployed in December 2007 �APEX APF-8 air pump limitation software -Prevents excess p

75

Floating Solar Chimney Technology: A Solar Proposal for China  

Science Journals Connector (OSTI)

The Floating Solar Chimney (FSC) Technology Power Plants, are made... A large solar collector with a transparent roof that warms the air...

Christos Papageorgiou

2009-01-01T23:59:59.000Z

76

NREL: Wind Research - NREL Analyzes Floating Offshore Wind Technology...  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL Analyzes Floating Offshore Wind Technology for Statoil November 6, 2014 NREL engineers traveled to Oslo, Norway, to meet with Statoil representatives regarding NREL's analysis...

77

NREL: Technology Transfer - NREL Analyzes Floating Offshore Wind...  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL Analyzes Floating Offshore Wind Technology for Statoil November 6, 2014 NREL engineers traveled to Oslo, Norway, to meet with Statoil representatives regarding NREL's analysis...

78

Hydrodynamics-based floating wind turbine support platform optimization: A basis function approach  

Science Journals Connector (OSTI)

Abstract The floating wind turbine support structure design problem is complicated by conflicting technical objectives and innumerable platform geometry options. Previous support structure optimization studies have been limited in their ability to evaluate the full design space due to their adherence to certain assumptions about the physical platform configuration. The present work is an effort toward developing an alternative form of the support platform optimization problem one that abstracts details of the platform geometry and deals instead with hydrodynamic performance coefficients in order to provide a more complete and intuitive exploration of the design space. A basis function approach, which represents the design space by linearly combining the hydrodynamic performance coefficients of a diverse set of basis platform geometries, was taken as the most straightforward way of physically constraining the platform hydrodynamic performance. Candidate designs are evaluated in the frequency domain using linearized coefficients for the wind turbine, platform, and mooring system dynamics. The platform hydrodynamic coefficients are calculated according to linear hydrodynamic theory. The optimization objective is to minimize the nacelle acceleration under several operating conditions. Optimization results for a slack catenary mooring system indicate the benefits of combining submerged volume with a widely dispersed water plane area. Results for a tension leg mooring system are consistent with conventional TLP designs. The intent is to use these results as starting points for more traditional platform parameter optimization. Examination of the possible physical interpretations of linearly combining basis platform coefficients reveals that certain aspects of this approach may have poor physicality. This points to the need to expand this first attempt with more sophisticated ways of representing the constrained hydrodynamic performance variables.

Matthew Hall; Brad Buckham; Curran Crawford

2014-01-01T23:59:59.000Z

79

Wind/Wave Misalignment in the Loads Analysis of a Floating Offshore Wind Turbine: Preprint  

SciTech Connect

Wind resources far from the shore and in deeper seas have encouraged the offshore wind industry to look into floating platforms. The International Electrotechnical Commission (IEC) is developing a new technical specification for the design of floating offshore wind turbines that extends existing design standards for land-based and fixed-bottom offshore wind turbines. The work summarized in this paper supports the development of best practices and simulation requirements in the loads analysis of floating offshore wind turbines by examining the impact of wind/wave misalignment on the system loads under normal operation. Simulations of the OC3-Hywind floating offshore wind turbine system under a wide range of wind speeds, significant wave heights, peak-spectral periods and wind/wave misalignments have been carried out with the aero-servo-hydro-elastic tool FAST [4]. The extreme and fatigue loads have been calculated for all the simulations. The extreme and fatigue loading as a function of wind/wave misalignment have been represented as load roses and a directional binning sensitivity study has been carried out. This study focused on identifying the number and type of wind/wave misalignment simulations needed to accurately capture the extreme and fatigue loads of the system in all possible metocean conditions considered, and for a down-selected set identified as the generic US East Coast site. For this axisymmetric platform, perpendicular wind and waves play an important role in the support structure and including these cases in the design loads analysis can improve the estimation of extreme and fatigue loads. However, most structural locations see their highest extreme and fatigue loads with aligned wind and waves. These results are specific to the spar type platform, but it is expected that the results presented here will be similar to other floating platforms.

Barj, L.; Stewart, S.; Stewart, G.; Lackner, M.; Jonkman, J.; Robertson, A.

2014-02-01T23:59:59.000Z

80

FLOATING PRESSURE CONVERSION AND EQUIPMENT UPGRADES OF TWO 3.5KW, 20K, HELIUM REFRIGERATORS  

SciTech Connect

Two helium refrigerators, each rated for 3.5 KW at 20 K, are used at NASA's Johnson Space Center (JSC) in Building No. 32 to provide cryogenic-pumping within two large thermal-vacuum chambers. These refrigerators were originally commissioned in 1996. New changes to the controls of these refrigerators were recently completed. This paper describes some of the control issues that necessitated the controls change-over. It will describe the modifications and the new process control which allows the refrigerators to take advantage of the Ganni Cycle floating pressure control technology. The controls philosophy change-over to the floating pressure control technology was the first application on a helium gas refrigeration system. Previous implementations of the floating pressure technology have been on 4 K liquefaction and refrigeration systems, which have stored liquid helium volumes that have level indications used for varying the pressure levels (charge) in the system for capacity modulation. The upgrades have greatly improved the performance, stability, and efficiency of these two refrigerators. The upgrades have also given the operators more information and details about the operational status of the main components (compressors, expanders etc.) of the refrigerators at all operating conditions (i.e. at various loads in the vacuum chambers). The performance data of the two systems, pre and post upgrading are presented.

J. Homan, V. Ganni, A. Sidi-Yekhlef, J. Creel, R. Norton, R. Linza, G. Vargas, J. Lauterbach, J. Urbin, D. Howe

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Evaluation of an approximate method for incorporating floating docks in harbor wave prediction models  

E-Print Network (OSTI)

coastal domains. However, floating structures such as floating breakwaters and docks are often encountered in the modeling domain. This makes the problem locally 3- dimensional. Hence it is problematic to incorporate a floating structure into the 2-d model...

Tang, Zhaoxiang

2005-11-01T23:59:59.000Z

82

A SIMULATION MODEL FOR FLOATING-GATE MOS SYNAPSE TRANSISTORS  

E-Print Network (OSTI)

A SIMULATION MODEL FOR FLOATING-GATE MOS SYNAPSE TRANSISTORS Kambiz Rahimi, Chris Diorio, Cecilia, Seattle, Washington ABSTRACT We propose an empirical simulation model for p-channel floating-gate MOS and accurate simulation model for the synaptic devices, many of these circuits were designed using equation

Diorio, Chris

83

Design advanced for large-scale, economic, floating LNG plant  

SciTech Connect

A floating LNG plant design has been developed which is technically feasible, economical, safe, and reliable. This technology will allow monetization of small marginal fields and improve the economics of large fields. Mobil`s world-scale plant design has a capacity of 6 million tons/year of LNG and up to 55,000 b/d condensate produced from 1 bcfd of feed gas. The plant would be located on a large, secure, concrete barge with a central moonpool. LNG storage is provided for 250,000 cu m and condensate storage for 650,000 bbl. And both products are off-loaded from the barge. Model tests have verified the stability of the barge structure: barge motions are low enough to permit the plant to continue operation in a 100-year storm in the Pacific Rim. Moreover, the barge is spread-moored, eliminating the need for a turret and swivel. Because the design is generic, the plant can process a wide variety of feed gases and operate in different environments, should the plant be relocated. This capability potentially gives the plant investment a much longer project life because its use is not limited to the life of only one producing area.

Naklie, M.M. [Mobil Technology Co., Dallas, TX (United States)

1997-06-30T23:59:59.000Z

84

Float level switch for a nuclear power plant containment vessel  

DOE Patents (OSTI)

This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel.

Powell, James G. (Clifton Park, NY)

1993-01-01T23:59:59.000Z

85

Float level switch for a nuclear power plant containment vessel  

DOE Patents (OSTI)

This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel. 1 figures.

Powell, J.G.

1993-11-16T23:59:59.000Z

86

EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EA-1792: University of Maine's Deepwater Offshore Floating Wind EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine Summary This EA evaluates the environmental impacts of a proposal to support research on floating offshore wind turbine platforms. This project would support the mission, vision, and goals of DOE's Office of Energy Efficiency and Renewable Energy Wind and Water Power Program to improve performance, lower costs, and accelerate deployment of innovative wind power technologies. Development of offshore wind energy technologies would help the nation reduce its greenhouse gas emissions, diversify its energy supply, provide cost-competitive electricity to key coastal regions, and

87

An economic analysis of Floating Liquefied Natural Gas (FLNG)  

E-Print Network (OSTI)

This report includes a discussion of the potential production of stranded natural gas reserves through the implementation of Floating Liquefied Natural Gas (FLNG) in a world of growing energy demand followed by an analysis ...

Marmolejo, Phillip Christian

2014-01-01T23:59:59.000Z

88

Energy Savings from Floating Head Pressure in Ammonia Refrigeration Systems  

E-Print Network (OSTI)

This paper presents case studies of two moderately sized ammonia refrigeration systems retrofitted for floating head pressure control. It also presents a parametric analysis to assist in selecting appropriate pressures in an ammonia refrigeration...

Barrer, P. J.; Jones, S. M.

89

Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine  

E-Print Network (OSTI)

MUFOWT analysis tool is able to compute any type of floating platform with various kinds of horizontal axis wind turbines (HAWT). Individual control of each turbine is also available and the different structural properties of tower and blades can...

Bae, Yoon Hyeok

2013-04-23T23:59:59.000Z

90

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

September 2007. 5. "Hywind the Worlds First Full-scaleOffshore/Hywind/Pages/HywindPuttingWindPowerToTheTest. aspx4 Figure 1.3: Hywind concept floating wind turbine [

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

91

Floating type ocean wave power station equipped with hydroelectric unit  

Science Journals Connector (OSTI)

The authors have invented the unique ocean wave power station, which is composed of the floating ... wave pitch and the counter-rotating type wave power unit, its runners are submerged in the ... as requested, be...

Shun Okamoto; Toshiaki Kanemoto; Toshihiko Umekage

2013-10-01T23:59:59.000Z

92

Floating Refrigerant Loop Based on R-134a Refrigerant Cooling of High-Heat Flux Electronics  

SciTech Connect

The Oak Ridge National Laboratory (ORNL) Power Electronics and Electric Machinery Research Center (PEEMRC) have been developing technologies to address the thermal issues associated with hybrid vehicles. Removal of the heat generated from electrical losses in traction motors and their associated power electronics is essential for the reliable operation of motors and power electronics. As part of a larger thermal control project, which includes shrinking inverter size and direct cooling of electronics, ORNL has developed U.S. Patent No. 6,772,603 B2, ''Methods and Apparatus for Thermal Management of Vehicle Systems and Components'' [1], and patent pending, ''Floating Loop System for Cooling Integrated Motors and Inverters Using Hot Liquid Refrigerant'' [2]. The floating-loop system provides a large coefficient of performance (COP) for hybrid-drive component cooling. This loop (based on R-134a) is integrated with a vehicle's existing air-conditioning (AC) condenser, which dissipates waste heat to the ambient air. Because the temperature requirements for cooling of power electronics and electric machines are not as low as that required for passenger compartment air, this adjoining loop can operate on the high-pressure side of the existing AC system. This arrangement also allows the floating loop to run without the need for the compressor and only needs a small pump to move the liquid refrigerant. For the design to be viable, the loop must not adversely affect the existing system. The loop should also provide a high COP, a flat-temperature profile, and low-pressure drop. To date, the floating-loop test prototype has successfully removed 2 kW of heat load in a 9 kW automobile passenger AC system with and without the automotive AC system running. The COP for the tested floating-loop system ranges from 40-45, as compared to a typical AC system COP of about 2-4. The estimated required waste-heat load for future hybrid applications is 5.5 kW and the existing system could be easily scaleable for this larger load.

Lowe, K.T.

2005-10-07T23:59:59.000Z

93

MHK Technologies/Floating anchored OTEC plant | Open Energy Information  

Open Energy Info (EERE)

anchored OTEC plant anchored OTEC plant < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Floating anchored OTEC plant.jpg Technology Profile Primary Organization LAUSDEO Incorporated Technology Resource Click here OTEC Technology Type Click here OTEC - Closed Cycle Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Anchored floating OTEC plant Small volume above ocean surface so that device can avoid damage due to severe weather Water depth must exceed 600 meters Prefer to use power line to transmit electricity to shore facility Can use electrolysis to produce hydrogen and transport hydrogen to floating or shore facility Mooring Configuration The preferred mooring configuration is gravity base with three bottom weights The weights can be at depths up to 3000 meters

94

MHK Technologies/Floating wave Generator | Open Energy Information  

Open Energy Info (EERE)

Generator Generator < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Floating wave Generator.jpg Technology Profile Primary Organization Green Energy Corp Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The Floating Wave Powered Generator is an attenuator that uses three pontoons that pivot on rigid arms as the wave passes driving gears that turn a generator Technology Dimensions Device Testing Date Submitted 45:12.2 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Floating_wave_Generator&oldid=681577"

95

The Stiller-Smith Engine: Floating gear analysis  

SciTech Connect

The Stiller-Smith Engine employs a non-standard gear train and as such requires a closer examination of the design and sizing of the gears. To accomplish this the motion of the Stiller-Smith gear train is compared to more familiar arrangements. The results of a kinematic and dynamic analysis introduce the irregular forces that the gears are subjected to. The ''floating'' or ''trammel'' gear is examined more closely, first stochastically and then with finite element analysis. This pinpoints high stress concentrations on the gear and where they occur during the engine cycle. The configuration considered is an output shaft, negligible idler gear forces, and floating gear pins that are part of the connecting rods rather than the floating gear. Various loading techniques are discussed with possible ramifications of each.

Craven, R.; Smith, J.E.; Butler, S.

1987-01-01T23:59:59.000Z

96

Selection of deepwater floating oil platform based on grey correlation  

Science Journals Connector (OSTI)

Abstract To select a suitable floating oil platform for a given deepwater oilfield, a method based on grey-correlation theory was proposed and verified. By analyzing factors that may affect selection of deepwater platform, thirteen main factors were chosen. This article also summed up the statistics on 65 deepwater floating platforms (including tension leg platform, deep-draft column type platform, semi-submersible platform, and floating storage mining and unloading device) performing well in the world. With a deepwater oilfield to be developed as a sample, the application of the method was illustrated: Considering the factor series of the given oilfield to be developed as referent series, the relevance between referent series and factor series of each platform in statistics was calculated with grey-correlation analysis, and the optimal platform was identified as the one that had the highest relevance. Two examples proved the feasibility and reliability of the method.

Dongfeng MAO; Menglan DUAN; Xinzhong LI; Junwei SU; Yingying WANG

2013-01-01T23:59:59.000Z

97

Prediction and measurement of the rotordynamic response of an automotive turbocharger with floating ring bearings  

E-Print Network (OSTI)

of lubricant heating and bearing clearance changes due to bearing power consumption. The floating ring bearing analysis provides both floating ring speeds and bearing force coefficients for use in a linear rotordynamic model. The linear rotordynamic...

Kerth, Jason Michael

2012-06-07T23:59:59.000Z

98

Measurement of Turbulent Kinetic Energy Dissipation Rate with a Lagrangian Float  

Science Journals Connector (OSTI)

This study tests the ability of a neutrally buoyant float to estimate the dissipation rate of turbulent kinetic energy ? from its vertical acceleration spectrum using an inertial subrange method. A Lagrangian float was equipped with a SonTek ...

Ren-Chieh Lien; Eric A. D'Asaro

2006-07-01T23:59:59.000Z

99

Development of a floating piston expander control algorithm for a Collins-type cryocooler  

E-Print Network (OSTI)

The multi-stage Collins-type cryocooler uses a floating piston design for the working fluid expansion in each stage. The piston floats between a cold volume, where the working fluid is expanded, and a warm volume. The ...

Hogan, Jake (Jake R.)

2012-01-01T23:59:59.000Z

100

Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines  

E-Print Network (OSTI)

Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Jair was coupled to the floating wind turbine simulator FAST. The results of the comparison study indicate the need

Victoria, University of

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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101

Floated Catalyst CVD Generation of Single-Walled Carbon Nanotubes from Alcohol  

E-Print Network (OSTI)

Floated Catalyst CVD Generation of Single-Walled Carbon Nanotubes from Alcohol Shigeo Maruyama to other configuration, a floated catalyst type generation of SWNTs. Using ferrocene as a precursor of floated iron catalyst clusters, high-purity SWNTs were generated from alcohol. Mist of ferrocene ethanol

Maruyama, Shigeo

102

Conceptual Design of Floating Wind Turbines with Large-Amplitude Motion  

E-Print Network (OSTI)

of spar-type floating offshore wind turbines is investigated in detail. Three conceptual designs based for siting offshore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating importance. The first full-scale offshore floating wind turbine in the world, Hywind, has been installed

Sweetman, Bert

103

Intermediate-depth Circulation of the Indian and South Pacific Oceans Measured by Autonomous Floats  

E-Print Network (OSTI)

Intermediate-depth Circulation of the Indian and South Pacific Oceans Measured by Autonomous Floats of the World Ocean Circulation Experiment, 306 autonomous floats were deployed in the tropical and South autonomous floats that are not acoustically tracked, but rather surface at regular intervals to be located by

Davis, Russ

104

Extreme responses of a combined spar-type floating wind turbine and floating wave energy converter (STC) system with survival modes  

Science Journals Connector (OSTI)

Abstract Offshore wind is an important source of renewable energy and is steadier and stronger than onshore wind. Offshore areas not only have strong winds but also contain other potential renewable energy sources, such as ocean waves and tidal currents. Therefore, it is interesting to investigate the possibility to utilise these energy potentials simultaneously, particularly the combination of wind and ocean wave energy due to their natural correlation. For this reason, previous researchers have examined the use of a floating wind turbine (FWT) and a wave energy converter (WEC) on a single platform (Aubault et al., 2011; Peiffer et al., 2011; Soulard and Babarit, 2012). In this paper, a combined concept involving a spar-type FWT and an axi-symmetric two-body WEC is considered and denoted as STC. With respect to operational conditions, a previous study (Muliawan et al., 2013) indicates that the STC not only reduces the total capital cost but also increases the total power production compared to the use of segregated FWT and WEC concepts. As with other floating systems, the STC must be designed to ensure serviceability and survivability during its entire service life. One of the design criteria is the ultimate limit state (ULS), which ensures that the entire STC system will have adequate strength to withstand the load effects imposed by extreme environmental actions. Therefore, in the present study, coupled (wave- and wind-induced response mooring) analysis is performed using SIMO/TDHMILL in the time domain to investigate such responses of the STC system as mooring tension, spar-tower interface bending moment, end stop force, and contact force at the Spar-Torus interface under extreme conditions. Environmental conditions that pertain to the northern North Sea metocean data are selected and include operational, survival and 50-year conditions. Finally, the ULS level responses that are capital cost indicators for both FWT alone and for the STC system are estimated and compared.

Made Jaya Muliawan; Madjid Karimirad; Zhen Gao; Torgeir Moan

2013-01-01T23:59:59.000Z

105

MHK Technologies/Ocean Treader floating | Open Energy Information  

Open Energy Info (EERE)

Treader floating Treader floating < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Ocean Treader floating.jpg Technology Profile Primary Organization Green Ocean Energy Ltd Project(s) where this technology is utilized *MHK Projects/Development of Ocean Treader Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 4: Proof of Concept Technology Description The Ocean Treader is comprised of two sponsons at the fore and aft of the device and a spar buoy in the center. As a wave passes along the device, first the fore sponson lifts and falls, then the spar buoy, and then the aft sponson, respectively. The relative motion between these three floating bodies is harvested by hydraulic cylinders mounted between the tops of the arms and the spar buoy. The cylinders pressurize hydraulic fluid that spins hydraulic motors and an electric generator. The electricity is exported via a cable piggy-backed to the anchor cable. Ocean Treader is designed to passively weather-vane to face the wave direction; and in addition, the device has active onboard adjustment to allow for offset due to the effects of current.

106

Floating Offshore Wind Technology Generating Resources Advisory Committee  

E-Print Network (OSTI)

Floating Offshore Wind Technology Jeff King Generating Resources Advisory Committee May 28, 2014 1 resource Offshore technology Prototypes and projects Cost Proposed 7th Plan Treatment 2 #12;Why technology transfer from offshore oil & gas industry On-shore fabrication & assembly (assembled unit towed

107

Coupled dynamic analysis of floating offshore wind farms  

E-Print Network (OSTI)

it is economically feasible and technologically manageable. So far, most of the offshore wind farm research has been limited to fixed platforms in shallow-water areas. In the water depth deeper than 30m, however, floating-type wind farms tend to be more feasible...

Shim, Sangyun

2009-05-15T23:59:59.000Z

108

Induction arrows from offshore floating magnetometers using land reference data  

Science Journals Connector (OSTI)

......general location is the Murray Basin, in the vicinity of Mildura...seawater in the Great Australian Bight and Southern Ocean. In fact...open ocean, Great Australian Bight As a further trial of this technique...from land (such as the Murray Basin sites) to a magnetometer floating......

A. P. Hitchman; F. E. M. Lilley; P. R. Milligan

2000-02-01T23:59:59.000Z

109

MHK Technologies/Trondheim Point Absorber | Open Energy Information  

Open Energy Info (EERE)

Trondheim Point Absorber Trondheim Point Absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Trondheim Point Absorber.jpg Technology Profile Primary Organization Norwegian University of Science and Technology CONWEC AS Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The floating buoy can oscillate along a strut that at its lower end is connected to a universal joint on an anchor on the sea bed The water depth which depends on the tide is in the range of 4 to 7 m On the top of the hull the latching mechanism and one of the guiding roller units are visible As the bottom of the hull is open sea water is flowing into and out from an inner chamber where the water surface acts as the piston of an air pump

110

MHK Technologies/Floating Duck Type Device | Open Energy Information  

Open Energy Info (EERE)

Type Device Type Device < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Floating Duck Type Device.jpg Technology Profile Primary Organization Guangzhou Institute of Energy Conversion Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Guangzhou Institute of Energy Conversion GIEC of Chinese Academy of Sciences CAS plans to build an isolated power system with renewable energy on Dawanshan Island Guangdong Province before August 2012 with total installed capacity of 500kW including 300kW from wave energy device and 200kW from wind turbine The design of 100kW floating duck type device charging process and special transporting boat has been completed and the scale prototype is testing Technology Dimensions

111

Freely floating structures trapping time-harmonic water waves (revisited)  

E-Print Network (OSTI)

We study the coupled small-amplitude motion of the mechanical system consisting of infinitely deep water and a structure immersed in it. The former is bounded above by a free surface, whereas the latter is formed by an arbitrary finite number of surface-piercing bodies floating freely. The mathematical model of time-harmonic motion is a spectral problem in which the frequency of oscillations serves as the spectral parameter. It is proved that there exist axisymmetric structures consisting of $N \\geq 2$ bodies; every structure has the following properties: (i) a time-harmonic wave mode is trapped by it; (ii) some of its bodies (may be none) are motionless, whereas the rest of the bodies (may be none) are heaving at the same frequency as water. The construction of these structures is based on a generalization of the semi-inverse procedure applied earlier for obtaining trapping bodies that are motionless although float freely.

Nikolay Kuznetsov; Oleg Motygin

2014-10-22T23:59:59.000Z

112

EIS-0070: Mining, Construction and Operation for a Full-size Module at the Anvil Points Oil Shale Facility, Rifle, Garfield County, Colorado  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy prepared this environmental impact statement to assess the environmental and socioeconomic implications of its proposal to mine 11 million tons of oil shale from the Naval Oil Shale Reserves (NOSR) at Anvil Points, Colorado; to construct an experimental full-size shale retort module on a 365-acre lease tract having a 4700 bbl/day production capacity; and to consider extension, modification or new leasing of the facility.

113

Transient thermal behavior of stratospheric balloons at float conditions  

Science Journals Connector (OSTI)

The prediction of the thermal behavior of stratospheric balloons under varying environmental conditions is one of the key issues in the design and flight test of balloons. In this paper, a three-dimensional transient thermal model is developed to predict the thermal behavior of spherical stratospheric balloons. The diurnal variations of the skin and lifting gas temperatures at float conditions are discussed in detail. The further studies on the thermal behavior of stratospheric balloons are presented also.

Xin-Lin Xia; De-Fu Li; Chuang Sun; Li-Ming Ruan

2010-01-01T23:59:59.000Z

114

Definition: Point Absorber | Open Energy Information  

Open Energy Info (EERE)

Point Absorber Point Absorber Jump to: navigation, search Dictionary.png Point Absorber Wave energy capture device, with principal dimension relatively small compared to the wavelength, and is able to capture energy from a wave front greater than the physical dimension of the device. There are floating and submerged models.[1] Related Terms Wave power; PowerBouy References ↑ http://en.wikipedia.org/wiki/Wave_power Poi LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ntabsorber.jpg Example of a Point Absorber A submerged pressure differential wave energy capturing device, which can be considered a fully submerged point absorber. A pressure differential is induced within the device as the wave passes, driving a fluid pump to create mechanical energy. Retrieved from

115

Development of mid-scale and floating LNG facilities  

SciTech Connect

The development of large-scale base load LNG facilities has dominated the process industry for decades. However, in many areas of the world, base load facilities are not feasible due to inadequate reserves. Mid-scale facilities can be economically attractive in certain locations and, in fact, have several advantages which aid in their development. The PRICO II LNG liquefaction process offers a process configuration which fits well with these developments. The process has been used in a range of facility sizes from base load to peak shaving applications. In addition to onshore facilities, floating liquefaction facilities can be developed on barges or tankers to handle mid-scale to large scale LNG production. Concepts for several sizes and configurations of floating facilities have been developed using the PRICO II process integrated into a total production, liquefaction, and load-out system. This paper covers the PRICO process concept, application areas and facility configurations which are currently being developed for mid-scale and floating LNG facilities.

Price, B.C.; Mortko, R.A. [Black and Veatch Pritchard, Inc., Overland Park, KS (United States)

1998-12-31T23:59:59.000Z

116

Absolute Factorization of Bivariate Polynomials with Floating Point Coe cients Andr Galligo and Stephen M. Watt  

E-Print Network (OSTI)

and Stephen M. Watt University of Nice-Sophia Antipolis Given a polynomial px y of degree d and complex oating

Watt, Stephen M.

117

Multi-Day Float Plan Vessel: Cape Horn Klamath Kayaks Mussel Point Achilles Other __________________  

E-Print Network (OSTI)

in #12;BODEGA MARINE LAB BOATING EMERGENCY CONTACT LIST BML Main Office 707-875-2211 during business-762-6372 (cell) DAN - Diver Alert Network 919-684-9111 BODEGA MARINE LAB EMERGENCY RESPONSE TEAM 1. Steve Neil. Call USCG ­ VHF Channel 16 a. Same as above b. Request BML notification Ensure ALL persons are wearing

Schladow, S. Geoffrey

118

T-561: IBM and Oracle Java Binary Floating-Point Number Conversion...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

could enter a repetitive loop, becoming unresponsive. PatchesSoftware Downloads Patch Availability Table IBM has released fixes at the following links: PM32177 ; PM32175 ;...

119

Experimental Wave Tank Test for Reference Model 3 Floating-Point Absorber Wave Energy Converter Project  

SciTech Connect

The U.S. Department of Energy established a reference model project to benchmark a set of marine and hydrokinetic technologies including current (tidal, open-ocean, and river) turbines and wave energy converters. The objectives of the project were to first evaluate the status of these technologies and their readiness for commercial applications. Second, to evaluate the potential cost of energy and identify cost-reduction pathways and areas where additional research could be best applied to accelerate technology development to market readiness.

Yu, Y. H.; Lawson, M.; Li, Y.; Previsic, M.; Epler, J.; Lou, J.

2015-01-01T23:59:59.000Z

120

Decommissioning and Dismantling of the Floating Maintenance Base 'Lepse' - 13316  

SciTech Connect

The Lepse was built in Russia in 1934 and commissioned as a dry cargo ship. In 1961 she was re-equipped for use as a nuclear service ship (NSS), specifically a floating maintenance base (FMB), to support the operation of the civilian nuclear fleet (ice-breakers) of the USSR. In 1988 Lepse was taken out of service and in 1990 she was re-classified as a 'berth connected ship', located at a berth near the port of Murmansk under the ownership of Federal State Unitary Enterprise (FSUE) Atomflot. Lepse has special storage facilities for spent nuclear fuel assemblies (SFA) that have been used to store several hundred SFAs for nearly 40 years. High and intermediate-level liquid radioactive waste (LRW) is also present in the spent nuclear fuel assembly storage channels, in special tanks and also in the SFA cooling circuit. Many of the SFAs stored in Lepse are classified as damaged and cannot be removed using standard procedures. The removal of the SFA and LRW from the Lepse storage facilities is a hazardous task and requires specially designed tools, equipment and an infrastructure in which these can be deployed safely. Lepse is a significant environmental hazard in the North West of Russia. Storing spent nuclear fuel and high-level liquid radioactive waste on board Lepse in the current conditions is not acceptable with respect to Russian Federation health, safety and environmental standards and with international best practice. The approved concept design for the removal of the SFA and LRW and dismantling of Lepse requires that the ship be transported to Nerpa shipyard where specialist infrastructure will be constructed and equipment installed. One of the main complexities of the Project lies within the number of interested stakeholders involved in the Project. The Lepse project has been high focus on the international stage for many years with previous international efforts failing to make significant progress towards the objective of decommissioning Lepse. The Northern Dimension Environmental Partnership (NDEP) approved an internationally funded project to identify and prioritise nuclear and environmental hazards in NW Russia. Within this project the Lepse was recognised as being one of the highest nuclear hazards in NW Russia. Removal of SNF, SRW and LRW from Lepse requires innovative design and development of bespoke equipment. The main drivers of the NDEP Donors are first to safely transport Lepse in 2012 from her current berth close to the local population in Murmansk to the nominated dismantling shipyard, and secondly to raise Lepse from the water in 2013 onto the slip-way at the dismantling shipyard. A description is provided of the approach and progress towards preparing the Lepse for the removal of SFAs and other radioactive waste, to decontaminate and then dismantle the vessel under international donor funding. (authors)

Field, D.; Mizen, K. [Nuvia Limited (United Kingdom)] [Nuvia Limited (United Kingdom)

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

The Aerodynamics and Near Wake of an Offshore Floating Horizontal Axis Wind Turbine.  

E-Print Network (OSTI)

??Offshore floating wind turbines represent the future of wind energy. However, significant challenges must be overcome before these systems can be widely used. Because of (more)

Sebastian, Thomas

2012-01-01T23:59:59.000Z

122

Biofuels from a Floating Water Weed | U.S. DOE Office of Science...  

NLE Websites -- All DOE Office Websites (Extended Search)

Biofuels from a Floating Water Weed Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External...

123

Verification of New Floating Capabilities in FAST v8: Preprint  

SciTech Connect

In the latest release of NREL's wind turbine aero-hydro-servo-elastic simulation software, FAST v8, several new capabilities and major changes were introduced. FAST has been significantly altered to improve the simulator's modularity and to include new functionalities in the form of modules in the FAST v8 framework. This paper is focused on the improvements made for the modeling of floating offshore wind systems. The most significant change was to the hydrodynamic load calculation algorithms, which are embedded in the HydroDyn module. HydroDyn is now capable of applying strip-theory (via an extension of Morison's equation) at the member level for user-defined geometries. Users may now use a strip-theory-only approach for applying the hydrodynamic loads, as well as the previous potential-flow (radiation/diffraction) approach and a hybrid combination of both methods (radiation/diffraction and the drag component of Morison's equation). Second-order hydrodynamic implementations in both the wave kinematics used by the strip-theory solution and the wave-excitation loads in the potential-flow solution were also added to HydroDyn. The new floating capabilities were verified through a direct code-to-code comparison. We conducted a series of simulations of the International Energy Agency Wind Task 30 Offshore Code Comparison Collaboration Continuation (OC4) floating semisubmersible model and compared the wind turbine response predicted by FAST v8, the corresponding FAST v7 results, and results from other participants in the OC4 project. We found good agreement between FAST v7 and FAST v8 when using the linear radiation/diffraction modeling approach. The strip-theory-based approach inherently differs from the radiation/diffraction approach used in FAST v7 and we identified and characterized the differences. Enabling the second-order effects significantly improved the agreement between FAST v8 and the other OC4 participants.

Wendt, F.; Robertson, A.; Jonkman, J.; Hayman, G.

2015-01-01T23:59:59.000Z

124

Motion response of floating structures to regular waves  

Science Journals Connector (OSTI)

Linearized and non-linear methods for analysing motion response of floating structures to regular waves are discussed in this paper. The linearized method is based upon a traditional frequency domain approach, whereas the non-linear method is based upon the time integration method as proposed by Newmark. In addition, a new approximate method is proposed. This method, which employs a Newton-Raphson solution of the equations of motion, is an extension of the linearized method and is therefore valid for near linear systems. These methods are applied to a taut line moored structure; the Aker Tethered Production Platform and to a conventional semi-submersible, the Aker H3.

B.J. Natvig; J.W. Pendered

1980-01-01T23:59:59.000Z

125

Definition of the Semisubmersible Floating System for Phase II of OC4  

SciTech Connect

Phase II of the Offshore Code Comparison Collaboration Continuation (OC4) project involved modeling of a semisubmersible floating offshore wind system as shown below. This report documents the specifications of the floating system, which were needed by the OC4 participants for building aero-hydro-servo-elastic models.

Robertson, A.; Jonkman, J.; Masciola, M.; Song, H.; Goupee, A.; Coulling, A.; Luan, C.

2014-09-01T23:59:59.000Z

126

Floating hot-melt extruded tablets for gastroretentive controlled drug release system  

E-Print Network (OSTI)

a gastric floating dosage form using the puff ability at the die of a twin-screw extruder. Wei et al. [21Floating hot-melt extruded tablets for gastroretentive controlled drug release system Mamoru Fukuda bicarbonate on the physicochemical properties of controlled release hot- melt extruded (HME) tablets

Peppas, Nicholas A.

127

Simulation of large-amplitude motion of floating wind turbines using conservation of momentum  

E-Print Network (OSTI)

Environmental, aesthetic and political pressures continue to push for siting offshore wind turbines beyond sightSimulation of large-amplitude motion of floating wind turbines using conservation of momentum Lei equations of motion (EOMs) of a floating wind turbine system using the theorem of conservation of angular

Sweetman, Bert

128

Floating Offshore Wind Turbine Dynamics: Large-Angle Motions in Euler-Space  

E-Print Network (OSTI)

Floating Offshore Wind Turbine Dynamics: Large-Angle Motions in Euler-Space Bert Sweetman Texas A offshore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating structures wind turbines in deep water, where environmental forcing could subject the rotor to meaningful angular

Sweetman, Bert

129

Intermediate Zonal Jets in the Tropical Pacific Ocean Observed by Argo Floats* SOPHIE CRAVATTE  

E-Print Network (OSTI)

Intermediate Zonal Jets in the Tropical Pacific Ocean Observed by Argo Floats* SOPHIE CRAVATTE´veloppement, LEGOS, Toulouse, France WILLIAM S. KESSLER National Oceanic and Atmospheric Administration/Pacific Argo float data in the tropical Pacific Ocean during January 2003­August 2011 are analyzed to obtain

Boyer, Edmond

130

Definition of the Floating System for Phase IV of OC3  

SciTech Connect

Phase IV of the IEA Annex XXIII Offshore Code Comparison Collaboration (OC3) involves the modeling of an offshore floating wind turbine. This report documents the specifications of the floating system, which are needed by the OC3 participants for building aero-hydro-servo-elastic models.

Jonkman, J.

2010-05-01T23:59:59.000Z

131

MYSTERY OF POINT CHARGES  

E-Print Network (OSTI)

for more general potentials and dynamical systems are obtained in [9]. ..... with a suitable multiple of Q: this operation does not change common zeros of Q ...... Terao [16] on the number of critical points for the product of powers of real linear .... J.E.Goodman and J. O'Rourke eds.,Handbook of discrete and computational...

2006-06-12T23:59:59.000Z

132

Talking Points  

U.S. Energy Information Administration (EIA) Indexed Site

Talking Points Talking Points NATURAL GAS MARKET INTEGRITY: How EIA Helps Presentation by William F. Hederman Congressional Research Service at EIA 30 th Anniversary Conference April 8, 2008 Washington, DC INTRODUCTION 1. Price levels and volatility cause suspicions. 2. Actual integrity and perceived integrity are both important for markets. 3. EIA was created in response to a crisis of confidence in energy market information. CANDIDATE INTEGRITY CRITERIA 1. Transparency 2. Efficiency (gathering, reporting, monitoring data) v. equity 3. Stability/predictability v. dynamism/volatility 4. Clarity (understanding) "DRAFT" TEN COMMANDMENTS/SUGGESTIONS 1. First presented at World Energy Congress, Rome, Nov. 2007 panel on Energy Market Integrity.

133

A floating platform of concrete for offshore wind turbine  

Science Journals Connector (OSTI)

A floating platform concept is introduced in this paper for offshore wind turbine. A vertical cylinder on the top of an elliptical sphere forms the principal configuration of the platform. The analysis of the dynamic performance of an example platform with 5 MW wind turbine by means of the well-established linear theory for the dynamics of marine constructions in waves shows that the platform is able to secure the normal function of the wind turbine in waves up to rough sea state and has the required dynamic performance for survival in extreme waves by adopting a survival ballast condition. An important feature of this concept is that reinforced concrete can be used as cost-efficient construction material so that the service life several times longer than similar steel constructions can be obtained despite of the marine corrosive and erosive environment. Thus this kind of platform can become competitive in the economical sustainable and environment-friendly aspect.

Jianbo Hua

2011-01-01T23:59:59.000Z

134

Offshore Code Comparison Collaboration within IEA Wind Task 23: Phase IV Results Regarding Floating Wind Turbine Modeling; Preprint  

SciTech Connect

Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Task 23. In the latest phase of the project, participants used an assortment of codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating spar buoy in 320 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants' codes, thus improving the standard of offshore wind turbine modeling.

Jonkman, J.; Larsen, T.; Hansen, A.; Nygaard, T.; Maus, K.; Karimirad, M.; Gao, Z.; Moan, T.; Fylling, I.

2010-04-01T23:59:59.000Z

135

Offshore Code Comparison Collaboration, Continuation within IEA Wind Task 30: Phase II Results Regarding a Floating Semisubmersible Wind System: Preprint  

SciTech Connect

Offshore wind turbines are designed and analyzed using comprehensive simulation tools (or codes) that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, Continuation (OC4) project, which operates under the International Energy Agency (IEA) Wind Task 30. In the latest phase of the project, participants used an assortment of simulation codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating semisubmersible in 200 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants? codes, thus improving the standard of offshore wind turbine modeling.

Robertson, A.; Jonkman, J.; Vorpahl, F.; Popko, W.; Qvist, J.; Froyd, L.; Chen, X.; Azcona, J.; Uzungoglu, E.; Guedes Soares, C.; Luan, C.; Yutong, H.; Pengcheng, F.; Yde, A.; Larsen, T.; Nichols, J.; Buils, R.; Lei, L.; Anders Nygard, T.; et al.

2014-03-01T23:59:59.000Z

136

Design of a 6-DoF Robotic Platform for Wind Tunnel Tests of Floating Wind Turbines  

Science Journals Connector (OSTI)

Abstract Sophisticated computational aero-hydro-elastic tools are being developed for simulating the dynamics of Floating Offshore Wind Turbines (FOWTs). The reliabilty of such prediction tools for designers requires experimental validation. To this end, due to the lack of a large amount of full scale data available, scale tests represent a remarkable tool. Moreover, due to the combined aerodynamic and hydrodynamic contributions to the dynamics of FOWTs, experimental tests should take into account both. This paper presents the design process of a 6-Degrees-of-Freedom robot for simulating the dynamics of \\{FOWTs\\} in wind tunnel scale experiments, as a complementary approach with respect to ocean wind-wave basin scale tests. Extreme events were considered for the definition of the robot requirements and performance. A general overview on the possible design solutions is reported, then the machine architecture as well as the kinematic and dynamic analysis is discussed. Also a motion task related to a 5-MW Floating Offshore Wind Turbine nominal operating condition was considered and then the ability of the robot to reproduce such motions verified in terms of maximum displacements, forces and power, to be within the design boundaries.

I. Bayati; M. Belloli; D. Ferrari; F. Fossati; H. Giberti

2014-01-01T23:59:59.000Z

137

Risk assessment of loss of structural integrity of a floating production platform due to gross errors  

Science Journals Connector (OSTI)

During the last years The Norwegian Petroleum Directorate, as well as Statoil, has put increased focus on how gross errors related to structural integrity are influencing the safety of offshore installations. Also, the loss of the P36, a floating platform outside Brazil in 2001, emphasised the importance to control gross errors in large projects. On this basis, a work to assess the risk of loss of the structural integrity of the Kristin platform, during operation, due to failure from gross errors was initiated. The Kristin platform is a permanently moored ring-pontoon semi-submersible production unit planned to be placed in the south-west part of Haltenbanken area in the North Sea in 2005. The water depth at the site is approximately 315m. The objective of this work was to quantify the risk contribution from gross errors related to structural integrity and to pinpoint the most critical items that may govern the probability of gross error for the Kristin platform. Some of the main findings from this work are presented in this paper.

Inge Lotsberg; Odd Olufsen; Gunnar Solland; Jan Inge Dalane; Sverre Haver

2004-01-01T23:59:59.000Z

138

Gliders, floats, and robot sailboats: autonomous platforms for marine mammal research  

Science Journals Connector (OSTI)

Passive acoustic monitoring (PAM) now widely used for marine mammal research is typically conducted using hydrophone arrays towed behind ships providing real-time data from large areas over short time spans (days to weeks) or using fixed autonomous hydrophones providing non-real-time data from small areas over long time spans (months to years). In contrast mobile platforms can supply near-real-time data over spatiotemporal scales large in both space and time. These systems are deployed from a vessel communicate via satellite with shore stations for navigation and control updates and report in near-real time upon detecting marine mammal or other sounds of interest. Acoustically-equipped gliders are buoyancy-driven devices that are capable of traversing long distances (hundreds to thousands of kilometers) over weeks to months of autonomous operation. Autonomous floats such as QUEphones drift with currents or park on the seafloor rising to the surface upon detectingsounds of interest. Robot sailboats such as the Roboat use wind to propel themselves quickly over long distances. All platforms can store large datasets and carry additional sensors (e.g. temperature salinity chlorophyll pH O2) and are therefore well-suited for investigating oceanographic and ecological questions. Advantages and disadvantages of these platforms for various applications will be discussed.

David K. Mellinger; Holger Klinck; Neil M. Bogue; Jim Luby; Haru Matsumoto; Roland Stelzer

2012-01-01T23:59:59.000Z

139

Dynamic Analysis of Floating Wind Turbines During Pitch Actuator Fault, Grid Loss, and Shutdown  

Science Journals Connector (OSTI)

Abstract Coupled non-linear aero-hydro-servo-elastic simulations of three types of floating wind turbines (spar, semi- submersible, and tension leg platform) are carried out for several fault cases over a range of environmental conditions based on correlated wind and wave data from the North Sea. Three particular fault scenarios are considered: 1) blade seize, where the pitch actuator of one blade is blocked, 2) blade seize, recognized by the controller and followed by shutdown (grid disconnection and aerodynamic braking), and 3) grid loss followed by shutdown. The platform motions and structural loads caused by fault events are compared to loads encountered during normal operation and during selected extreme weather conditions. Although the global motions and mooring line loads tend to be largest during stormaconditions, selected platforms experience large pitch or yaw motions due to blade seize and shutdown. Imbalance loads due to blade seize can lead to particularly large loads on the blades and tower, andethe shutdown process can impose relatively large edgewise blade loads.

Erin E. Bachynski; Mahmoud Etemaddar; Marit I. Kvittem; Chenyu Luan; Torgeir Moan

2013-01-01T23:59:59.000Z

140

EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

92-S1: University of Maine's Deepwater Offshore Floating Wind 92-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine Harbor Test Site EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine Harbor Test Site SUMMARY This Supplemental EA in a evaluates the environmental impacts of the University of Maine proposal to use Congressionally directed federal funding, from DOE, to deploy, test and retrieve one 1/8-scale floating wind turbine (20kw) prototype in Castine Harbor, offshore of Castine, Maine. This test would be conducted prior to testing at the site 2 miles from Monhegan Island (evaluated under DOE EA-1792). PUBLIC COMMENT OPPORTUNITIES No public comment opportunities at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation: Preprint  

SciTech Connect

This paper presents the use of fully coupled aero-hydro-servo-elastic simulation tools to perform a loads analysis of a 5-MW offshore wind turbine supported by a barge with moorings, one of many promising floating platform concepts.

Jonkman, J. M.; Buhl, M. L., Jr.

2007-06-01T23:59:59.000Z

142

A Comparison of Platform Options for Deep-water Floating Offshore...  

NLE Websites -- All DOE Office Websites (Extended Search)

in the design space. The platform designs are based on two existing designs, the OC3 Hywind spar-buoy and Principal Power's WindFloat semi-submersible. These designs are scaled...

143

Floating offshore wind farms : demand planning & logistical challenges of electricity generation  

E-Print Network (OSTI)

Floating offshore wind farms are likely to become the next paradigm in electricity generation from wind energy mainly because of the near constant high wind speeds in an offshore environment as opposed to the erratic wind ...

Nnadili, Christopher Dozie, 1978-

2009-01-01T23:59:59.000Z

144

Multibody Dynamics Using Conservation of Momentum with Application to Compliant Offshore Floating Wind Turbines  

E-Print Network (OSTI)

Environmental, aesthetic and political pressures continue to push for siting off-shore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating structures is likely to be considered. Savings could potentially...

Wang, Lei

2012-10-19T23:59:59.000Z

145

A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines  

E-Print Network (OSTI)

Ocean energy is one of the most important sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear ...

Lee, Sungho, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

146

EA-1992: Funding for Principle Power, Inc., for the WindFloat...  

Energy Savers (EERE)

2: Funding for Principle Power, Inc., for the WindFloat Pacific Offshore Wind Demonstration Project, offshore of Coos Bay, Oregon EA-1992: Funding for Principle Power, Inc., for...

147

Experiment study on FLOATING JACKET: a new concept for deep water platform design  

E-Print Network (OSTI)

As more oil and gas are discovered in deeper water than ever before, the offshore industry has become increasingly interested in the design of advanced offshore production platforms. A new design concept called FLOATING JACKET (FJ) is studied...

Xu, Yufeng

2012-06-07T23:59:59.000Z

148

Project ID: 35011 Title: The Floating Net Pen Transportation System Pilot Project  

E-Print Network (OSTI)

Project ID: 35011 Title: The Floating Net Pen Transportation System Pilot Project Sponsor: Columbia. Principal goals are to assess survival and straying at adulthood. Net pens are proposed as a low cost

149

13.022 Surface Waves and their Interaction With Floating Bodies, Spring 2002  

E-Print Network (OSTI)

Introduces the physics and mathematical modeling of linear and nonlinear surface wave interactions with floating bodies, e.g., ships and offshore platforms. Surface wave theory, including linear and nonlinear effects in a ...

Sclavounos, Paul D.

150

Travels of a floating space tool. A spacecraft is in a circular orbit ...  

E-Print Network (OSTI)

Travels of a floating space tool. A spacecraft is in a circular orbit 6750 km from the Earth's center of mass (i.e, it is about 250 miles above the surface).

2008-01-22T23:59:59.000Z

151

Hydrodynamics and drive-train dynamics of a direct-drive floating wind turbine  

E-Print Network (OSTI)

Floating wind turbines (FWTs) are considered a new lease of opportunity for sustaining growth from offshore wind energy. In recent years, several new concepts have emerged, with only a few making it to demonstration or ...

Sethuraman, Latha

2014-06-30T23:59:59.000Z

152

A network of floating docks pro-posed by Assistant Professor of  

E-Print Network (OSTI)

A network of floating docks pro- posed by Assistant Professor of Architecture Richard Garber of three vertical turbines on the underside of each dock, generating up to 24 kilowatts of constant energy

Bieber, Michael

153

NREL Computer Models Integrate Wind Turbines with Floating Platforms (Fact Sheet)  

SciTech Connect

Far off the shores of energy-hungry coastal cities, powerful winds blow over the open ocean, where the water is too deep for today's seabed-mounted offshore wind turbines. For the United States to tap into these vast offshore wind energy resources, wind turbines must be mounted on floating platforms to be cost effective. Researchers at the National Renewable Energy Laboratory (NREL) are supporting that development with computer models that allow detailed analyses of such floating wind turbines.

Not Available

2011-07-01T23:59:59.000Z

154

Analytical solutions to estimate the floating free product thickness and efficiency of recovery operations  

E-Print Network (OSTI)

solutions to estimate the recovery of oil from an established oil lens by a two pump recovery system. The solutions will be obtained by applying the Laplace and Double integral transformations to averaged linear partial differential equations governing... MODEL DEVELOPMENT 2. 1 Physical Problem 2. 2 Assumptions 2. 3 Mathematical Formulations 2. 4 Derivation of Oil Phase Equation 2. 5 Derivation of Water Phase Equation 7 8 12 13 24 III UNCOUPLED SOLUTIONS 30 3. 1 Introduction 3. 2 Case 1...

Lingam, Rajasekhar

1992-01-01T23:59:59.000Z

155

Offshore floating vertical axis wind turbines, dynamics modelling state of the art. part I: Aerodynamics  

Science Journals Connector (OSTI)

Abstract The need to further exploit offshore wind resources has pushed offshore wind farms into deeper waters, requiring the use of floating support structures to be economically sustainable. The use of conventional wind turbines may not continue to be the optimal design for floating applications. Therefore it is important to assess other alternative concepts in this context. Vertical axis wind turbines (VAWTs) are one promising concept, and it is important to first understand the coupled and relatively complex dynamics of floating \\{VAWTs\\} to assess their technical feasibility. A comprehensive review detailing the areas of engineering expertise utilised in developing an understanding of the coupled dynamics of floating \\{VAWTs\\} has been developed through a series of articles. This first article details the aerodynamic modelling of VAWTs, providing a review of available models, discussing their applicability to floating \\{VAWTs\\} and current implementations by researchers in this field. A concise comparison between conventional horizontal axis wind turbines and \\{VAWTs\\} is also presented, outlining the advantages and disadvantages of these technologies for the floating wind industry. This article has been written both for researchers new to this research area, outlining underlying theory whilst providing a comprehensive review of the latest work, and for experts in this area, providing a comprehensive list of the relevant references where the details of modelling approaches may be found.

Michael Borg; Andrew Shires; Maurizio Collu

2014-01-01T23:59:59.000Z

156

Floating Power Plant A S FPP | Open Energy Information  

Open Energy Info (EERE)

Power Plant A S FPP Power Plant A S FPP Jump to: navigation, search Name Floating Power Plant A/S (FPP) Address Stenholtsvej 27 Place Fredensborg, Denmark Zip DK-3480 Sector Wind energy Product Fredensborg-based company commercialising developments in the wave and wind energy sectors. Poseidon is the company's core development being tested at the site of an existing Dong offshore wind plant. Phone number 45 3391 9120 Website http://www.poseidonorgan.com Coordinates 55.978295°, 12.402055° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":55.978295,"lon":12.402055,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

157

Hydroelastic response of a floating runway to cnoidal waves  

SciTech Connect

The hydroelastic response of mat-type Very Large Floating Structures (VLFSs) to severe sea conditions, such as tsunamis and hurricanes, must be assessed for safety and survivability. An efficient and robust nonlinear hydroelastic model is required to predict accurately the motion of and the dynamic loads on a VLFS due to such large waves. We develop a nonlinear theory to predict the hydroelastic response of a VLFS in the presence of cnoidal waves and compare the predictions with the linear theory that is also developed here. This hydroelastic problem is formulated by directly coupling the structure with the fluid, by use of the Level I Green-Naghdi theory for the fluid motion and the Kirchhoff thin plate theory for the runway. The coupled fluid structure system, together with the appropriate jump conditions are solved in two-dimensions by the finite-difference method. The numerical model is used to study the nonlinear response of a VLFS to storm waves which are modeled by use of the cnoidal-wave theory. Parametric studies show that the nonlinearity of the waves is very important in accurately predicting the dynamic bending moment and wave run-up on a VLFS in high seas.

Ertekin, R. C., E-mail: ertekin@hawaii.edu [Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States); Xia, Dingwu [Engineering Services, British Petroleum GoM, Houston, Texas 77079 (United States)] [Engineering Services, British Petroleum GoM, Houston, Texas 77079 (United States)

2014-02-15T23:59:59.000Z

158

Floating LNG plant will stress reliability and safety  

SciTech Connect

Mobil has developed a unique floating LNG plant design after extensive studies that set safety as the highest priority. The result is a production, storage and offloading platform designed to produce 6 million tons per year of LNG and up to 55,000 bpd of condensate from 1 Bcfd of feed gas. All production and off-loading equipment is supported by a square donut-shaped concrete hull, which is spread-moored. The hull contains storage tanks for 250,000 m{sup 3} of LNG, 6540,000 bbl of condensate and ballast water. Both LNG and condensate can be directly offloaded to shuttle tankers. Since the plant may be moved to produce from several different gas fields during its life, the plant and barge were designed to be generic. It can be used at any location in the Pacific Rim, with up to 15% CO{sub 2}, 100 ppm H{sub 2}S, 55 bbl/MMcf condensate and 650 ft water depth. It can be modified to handle other water depths, depending upon the environment. In addition, it is much more economical than an onshore grassroots LNG plant, with potential capital savings of 25% or more. The paper describes the machinery, meteorology and oceanography, and safety engineering.

Kinney, C.D.; Schulz, H.R.; Spring, W.

1997-07-01T23:59:59.000Z

159

New York Nuclear Profile - Indian Point  

U.S. Energy Information Administration (EIA) Indexed Site

Indian Point" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

160

Wisconsin Nuclear Profile - Point Beach Nuclear Plant  

U.S. Energy Information Administration (EIA) Indexed Site

Point Beach Nuclear Plant" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration...

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Synthesis of Numerical Methods for Modeling Wave Energy Converter-Point Absorbers: Preprint  

SciTech Connect

During the past few decades, wave energy has received significant attention among all ocean energy formats. Industry has proposed hundreds of prototypes such as an oscillating water column, a point absorber, an overtopping system, and a bottom-hinged system. In particular, many researchers have focused on modeling the floating-point absorber as the technology to extract wave energy. Several modeling methods have been used such as the analytical method, the boundary-integral equation method, the Navier-Stokes equations method, and the empirical method. However, no standardized method has been decided. To assist the development of wave energy conversion technologies, this report reviews the methods for modeling the floating-point absorber.

Li, Y.; Yu, Y. H.

2012-05-01T23:59:59.000Z

162

Manta Wings: Wave Energy Testing Floats to Puget Sound | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Manta Wings: Wave Energy Testing Floats to Puget Sound Manta Wings: Wave Energy Testing Floats to Puget Sound Manta Wings: Wave Energy Testing Floats to Puget Sound August 6, 2010 - 11:27am Addthis The 1:15 scale prototype being lowered into the wave flume at Oregon State University's O.H. Hinsdale Wave Research Laboratory | Photo courtesy of Columbia Power The 1:15 scale prototype being lowered into the wave flume at Oregon State University's O.H. Hinsdale Wave Research Laboratory | Photo courtesy of Columbia Power Lindsay Gsell Columbia Power Technologies plans to test an intermediate-scale version of its wave energy converter device in Puget Sound later this year. After the successful control tests, the company will move testing to open water in Puget Sound this fall. Columbia will test the intermediate 1:7

163

Photon-energy-dependent light effects in organic nano-floating-gate nonvolatile memories  

Science Journals Connector (OSTI)

Abstract A pentacene-based organic field-effect transistor nonvolatile memory, in which polystyrene covered Au nanoparticles act as the nano-floating-gate, is probed under different illumination conditions. The memory window can be greatly enlarged upon illumination depending on incident photon energy and intensity, and two light effects are proposed and discussed. The minority multiplication effect enhances the minority carrier tunneling into the nano-floating-gate, resulting in the remarkable positive VT shift. The excitation-induced injection effect is strongly photon energy dependent, and it is responsible for the significant negative VT shift. Appropriate illumination is favorable for reducing the programming/erasing voltage of organic nano-floating-gate nonvolatile memories.

Xu Gao; Chang-Hai Liu; Xiao-Jian She; Qin-Liang Li; Jie Liu; Sui-Dong Wang

2014-01-01T23:59:59.000Z

164

Check Point NGX R65 Security Administration  

Science Journals Connector (OSTI)

Check Point NGX R65 is the next major release of Check Point's flagship firewall software product, which has over 750,000 registered users. Check Point's NGX is the underlying security software platform for all of the company's enterprise firewall, VPN ... Keywords: Operating Systems, Security

Ralph Bonnell

2008-03-01T23:59:59.000Z

165

On the configuration of arrays of floating wave energy converters  

E-Print Network (OSTI)

In this thesis, certain issues relating to a number of wave energy absorbers operating in the same vicinity are investigated. Specifically, arrangements of the devices within such an array are sought, such that beneficial ...

Child, Benjamin Frederick Martin

2011-11-22T23:59:59.000Z

166

Subsea Kick Detection on Floating Vessels: A Parametric Study  

E-Print Network (OSTI)

Well control in drilling operations is priority to personnel safety. Detection of kicks, or the unscheduled entry of formation fluids into the wellbore, is vital to well control. It has been determined that return flow rate is the parameter most...

Collette, Eric Peter

2013-07-22T23:59:59.000Z

167

EA-1992: Funding for Principle Power, Inc., for the WindFloat Pacific Offshore Wind Demonstration Project, offshore of Coos Bay, Oregon  

Energy.gov (U.S. Department of Energy (DOE))

Funding for Principle Power, Inc., for the WindFloat Pacific Offshore Wind Demonstration Project, offshore of Coos Bay, Oregon

168

SETTLEMENT POINTS (Congo, Democra  

E-Print Network (OSTI)

SETTLEMENT POINTS ! ! ! ! ! ! ! ! ! ! ! ! ! ( ( ( ( ( ( ( ( ( ( ( ( ( ! ! ( (Congo, Democra Rwanda Republic of Tanzania Democratic Republic of Congo Settlement Points Administrative Units National

Columbia University

169

Home Channel News: Forest products giants float idea for 'e-commerce' -Brief Article FindArticles > Home Channel News > April 17, 2000 > Article > Print friendly  

E-Print Network (OSTI)

Home Channel News: Forest products giants float idea for 'e-commerce' - Brief Article FindArticles > Home Channel News > April 17, 2000 > Article > Print friendly Forest products giants float idea for 'e?tag=artBody;col1 (1 of 3) [11/13/2008 10:48:41 AM] #12;Home Channel News: Forest products giants float idea for 'e

170

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjrn Skaare*, Tor David Hanson*, Finn Gunnar Nielsen*, Rune Yttervik*, Anders Melchior Hansen**,  

E-Print Network (OSTI)

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjørn Skaare*, Tor David Hanson of floating wind turbines exposed to forces from wind, waves and current has been developed for Hydro Oil & Energy's floating wind turbine concept, HYWIND. Two existing, independent, computer program systems

171

Effects of Second-Order Hydrodynamic Forces on Floating Offshore Wind Turbines  

SciTech Connect

Relative to first-order, second-order wave-excitation loads are known to cause significant motions and additional loads in offshore oil and gas platforms. The design of floating offshore wind turbines was partially inherited from the offshore oil and gas industry. Floating offshore wind concepts have been studied with powerful aero-hydro-servo-elastic tools; however, most of the existing work on floating offshore wind turbines has neglected the contribution of second-order wave-excitation loads. As a result, this paper presents a computationally efficient methodology to consider these loads within FAST, a wind turbine computer-aided engineering tool developed by the National Renewable Energy Laboratory. The method implemented was verified against the commercial OrcaFlex tool, with good agreement, and low computational time. A reference floating offshore wind turbine was studied under several wind and wave load conditions, including the effects of second-order slow-drift and sum-frequency loads. Preliminary results revealed that these loads excite the turbine's natural frequencies, namely the surge and pitch natural frequencies.

Duarte, T.; Sarmento, A. J. N. A.; Jonkman, J.

2014-04-01T23:59:59.000Z

172

ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY ASSESSMENT THROUGH THEORY, SIMULATION AND DESIGN  

E-Print Network (OSTI)

A-1 ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY ASSESSMENT THROUGH THEORY, SIMULATION AND DESIGN Hundreds of wind turbines have been installed in the oceans surrounding Europe, and plans are in place for offshore developments in the US. Locating these wind turbines

Sweetman, Bert

173

Dynamic analysis of multiple-body floating platforms coupled with mooring lines and risers  

E-Print Network (OSTI)

A computer program, WINPOST-MULT, is developed for the dynamic analysis of a multiple-body floating system coupled with mooring lines and risers in the presence of waves, winds and currents. The coupled dynamics program for a single platform...

Kim, Young-Bok

2004-09-30T23:59:59.000Z

174

EIS-0035: Use of VLCCs and VLCCs as Floating Storage Facilities  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy prepared this environmental impact statement to assess the potential environmental and socioeconomic impacts associated with the proposed use of tankers as floating storage facilities. This statement is a draft supplement to the programmatic environmental impact statement for the Strategic Petroleum Reserve.

175

Technical University of Denmark Ris National Laboratory HAWC2 simulations of a floating  

E-Print Network (OSTI)

turbine for deep water Introduction The aeroelastic multi-body code for wind turbine response HAWC2 has-shore turbines the pitch motion is normally slow related to the tower motion causing a positive instantaneous gradient. For floating turbines the tower eigenfrequency is very low (

176

Effectiveness of Mechanical Aerationin Floating Aquatic Macrophyte-Based Wastewater Treatment Systems  

E-Print Network (OSTI)

Effectiveness of Mechanical Aerationin Floating Aquatic Macrophyte-Based Wastewater Treatment to evaluate its effect on wastewater treatment effi- ciency andplantgrowth. Light aeration (0.003 and0.021Lnr2 tanks. Heavy aeration (1.03 and 3.53 L nr2 min-1 ) raised wastewater dissolved oxygen(DO) concentrations

Florida, University of

177

The effects of second-order hydrodynamics on a semisubmersible floating offshore wind turbine  

Science Journals Connector (OSTI)

The objective of this paper is to assess the second-order hydrodynamic effects on a semisubmersible floating offshore wind turbine. Second-order hydrodynamics induce loads and motions at the sum- and difference-frequencies of the incident waves. These effects have often been ignored in offshore wind analysis, under the assumption that they are significantly smaller than first-order effects. The sum- and difference-frequency loads can, however, excite eigenfrequencies of a floating system, leading to large oscillations that strain the mooring system or vibrations that cause fatigue damage to the structure. Observations of supposed second-order responses in wave-tank tests performed by the DeepCwind consortium at the Maritime Research Institute Netherlands (MARIN) offshore basin suggest that these effects might be more important than originally expected. These observations inspired interest in investigating how second-order excitation affects floating offshore wind turbines and whether second-order hydrodynamics should be included in offshore wind simulation tools like FAST. In this work, the effects of second-order hydrodynamics on a floating semisubmersible offshore wind turbine are investigated. Because FAST is currently unable to account for second-order effects, a method to assess these effects was applied in which linearized properties of the floating wind system derived from FAST (including the 6x6 mass and stiffness matrices) are used by WAMIT to solve the first- and second-order hydrodynamics problems in the frequency domain. The method was applied to the Offshore Code Comparison Collaboration Continuation OC4-DeepCwind semisubmersible platform, supporting the National Renewable Energy Laboratory's 5-MW baseline wind turbine. In this paper, the loads and response of the system caused by the second-order hydrodynamics are analysed and compared to the first-order hydrodynamic loads and induced motions in the frequency domain. Further, the second-order loads and induced response data are compared to the loads and motions induced by aerodynamic loading as solved by FAST.

I Bayati; J Jonkman; A Robertson; A Platt

2014-01-01T23:59:59.000Z

178

Investigation of a FAST-OrcaFlex Coupling Module for Integrating Turbine and Mooring Dynamics of Offshore Floating Wind Turbines: Preprint  

SciTech Connect

To enable offshore floating wind turbine design, the following are required: accurate modeling of the wind turbine structural dynamics, aerodynamics, platform hydrodynamics, a mooring system, and control algorithms. Mooring and anchor design can appreciably affect the dynamic response of offshore wind platforms that are subject to environmental loads. From an engineering perspective, system behavior and line loads must be studied well to ensure the overall design is fit for the intended purpose. FAST (Fatigue, Aerodynamics, Structures and Turbulence) is a comprehensive simulation tool used for modeling land-based and offshore wind turbines. In the case of a floating turbine, continuous cable theory is used to emulate mooring line dynamics. Higher modeling fidelity can be gained through the use of finite element mooring theory. This can be achieved through the FASTlink coupling module, which couples FAST with OrcaFlex, a commercial simulation tool used for modeling mooring line dynamics. In this application, FAST is responsible for capturing the aerodynamic loads and flexure of the wind turbine and its tower, and OrcaFlex models the mooring line and hydrodynamic effects below the water surface. This paper investigates the accuracy and stability of the FAST/OrcaFlex coupling operation.

Masciola, M.; Robertson, A.; Jonkman, J.; Driscoll, F.

2011-10-01T23:59:59.000Z

179

An algorithm for the separation of two-row cuts 1  

E-Print Network (OSTI)

Sep 14, 2012 ... these operations involve computing a rational representation of the rays ri and the point f, which are usually only available in floating-point form.

2012-09-14T23:59:59.000Z

180

Material Point Methods  

NLE Websites -- All DOE Office Websites (Extended Search)

Material Point Methods and Multiphysics for Fracture and Multiphase Problems Joseph Teran, UCLA and Alice Koniges, LBL Contact: jteran@math.ucla.edu Material point methods (MPM)...

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Effect of contact angle on the orientation, stability, and assembly of dense floating cubes  

Science Journals Connector (OSTI)

In this paper, the effect of contact angle, density, and size on the orientation, stability, and assembly of floating cubes was investigated. All the cubes tested were more dense than water. Floatation occurred as a result of capillary stresses induced by deformation of the air-water interface. The advancing contact angle of the bare acrylic cubes was measured to be 85. The contact angle of the cubes was increased by painting the cubes with a commercially available superhydrophobic paint to reach an advancing contact angle of 150. Depending on their size, density, and contact angle, the cubes were observed to float in one of three primary orientations: edge up, vertex up, and face up. An experimental apparatus was built such that the sum of the gravitational force, buoyancy force, and capillary forces could be measured using a force transducer as a function of cube position as it was lowered through the air-water interface. Measurements showed that the maximum capillary forces were always experienced for the face up orientation. However, when floatation was possible in the vertex up orientation, it was found to be the most stable cube orientation because it had the lowest center of gravity. A series of theoretical predictions were performed for the cubes floating in each of the three primary orientations to calculate the net force on the cube. The theoretical predictions were found to match the experimental measurements well. A cube stability diagram of cube orientation as a function of cube contact angle and size was prepared from the predictions of theory and found to match the experimental observations quite well. The assembly of cubes floating face up and vertex up were also studied for assemblies of two, three, and many cubes. Cubes floating face up were found to assemble face-to-face and form regular square lattice patterns with no free interface between cubes. Cubes floating vertex up were found to assemble in a variety of different arrangements including edge-to-edge, vertex-to-vertex, face-to-face, and vertex-to-face with the most probably assembly being edge-to-edge. Large numbers of vertex up cubes were found to pack with a distribution of orientations and alignments.

Robert Daniello; Kashan Khan; Michael Donnell; Jonathan P. Rothstein

2014-02-26T23:59:59.000Z

182

Offshore Floating Wind Turbine-driven Deep Sea Water Pumping for Combined Electrical Power and District Cooling  

Science Journals Connector (OSTI)

A new concept utilising floating wind turbines to exploit the low temperatures of deep sea water for space cooling in buildings is presented. The approach is based on offshore hydraulic wind turbines pumping pressurised deep sea water to a centralised plant consisting of a hydro-electric power system coupled to a large-scale sea water-cooled air conditioning (AC) unit of an urban district cooling network. In order to investigate the potential advantages of this new concept over conventional technologies, a simplified model for performance simulation of a vapour compression AC unit was applied independently to three different systems, with the AC unit operating with (1) a constant flow of sea surface water, (2) a constant flow of sea water consisting of a mixture of surface sea water and deep sea water delivered by a single offshore hydraulic wind turbine and (3) an intermittent flow of deep sea water pumped by a single offshore hydraulic wind turbine. The analysis was based on one year of wind and ambient temperature data for the Central Mediterranean that is known for its deep waters, warm climate and relatively low wind speeds. The study confirmed that while the present concept is less efficient than conventional turbines utilising grid-connected electrical generators, a significant portion of the losses associated with the hydraulic transmission through the pipeline are offset by the extraction of cool deep sea water which reduces the electricity consumption of urban air-conditioning units.

T Sant; D Buhagiar; R N Farrugia

2014-01-01T23:59:59.000Z

183

Building Operator Certification  

E-Print Network (OSTI)

programmed settings review ? Verify damper settings ? Check static pressure sensor calibration ? Review occupant complaint records and remedies ? Review established temperature set points HVAC Controls Operational Review ESL-KT-13-12-49 CATEE 2013: Clean... Operator Certification Energy Efficiency through Operator Training BOC Has Two Levels Level I: Building Systems Maintenance ? Two or more years experience (5 yrs avg) ? Outcome: Basic understanding of electrical, HVAC and lighting systems...

Lilley, D.

2013-01-01T23:59:59.000Z

184

Tribal Points of Contacts | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Points of Contacts Points of Contacts Tribal Points of Contacts US DOE-Office of Environmental Management 1000 Independence Avenue, SW Washington, DC 20585 ph: (202) 586-5944 fax: (202) 586-5000 Richland Operations Office- Hanford Indian Nations Program P.O. Box 550- MSIN A7-75 Richland, WA 99352 ph: (509) 376-6332 fax: (509) 376-1563 West Valley Demonstration Project Tribal Government Liaison P.O. Box 191- 10282 Rock Springs Road West Valley, NY 14171 ph: (716) 942-4629 fax: (716) 942-2068 Albuquerque Operations Office Tribal Government Liaison P.O. Box 5400 Albuquerque, NM 87185 ph: (505) 845-5977 fax: (505) 845-4154 Tribal Points of Contact Richland Operations Office: Hanford Albuquerque Operations Office: Yakama Indian Nation Environmental Restoration/ Waste Management Program

185

Wastewater treatment in a compact intensified wetland system at the Badboot: a floating swimming pool in Belgium  

Science Journals Connector (OSTI)

The Badboot (Dutch for swimming pool boat) is a floating swimming pool located in the city center of Antwerp ... newly built ship that harbours an Olympic size swimming pool, sun decks, locker rooms with showers,...

D. Van Oirschot; S. Wallace; R. Van Deun

2014-11-01T23:59:59.000Z

186

Radiation consequences of seawater contamination during floating storage of reactor-compartment units from salvaged nuclear-powered submarines  

Science Journals Connector (OSTI)

The storage time before salvaging of decommissioned nuclear-powered submarines and the floating storage time of reactor units from salvaged submarines ... decades. During this time, radioactive contamination of seawater

A. Ya. Blekher; N. L. Kuchin; I. V. Sergeev

187

Experiences with object-oriented and equation based modeling of a floating support structure for wind turbines in modelica  

Science Journals Connector (OSTI)

A floating substructure for wind turbines is modeled using the object-oriented modeling language Modelica in a coupled simulation environment. The equation-based modeling facilitates the implementation for engineers due to declarative model descriptions ...

Matthias Brommundt; Michael Muskulus; Mareike Strach; Michael Strobel; Fabian Vorpahl

2012-12-01T23:59:59.000Z

188

ccsd-00000448(version1):26Jun2003 Swelling of phospholipid floating bilayers: the effect of chain length  

E-Print Network (OSTI)

: Fluctuations 61.12.Ha: Neutron reflectometry 68.15.+e: Liquid thin films I. INTRODUCTION The basic building.m.s. positions of the floating bilayer were determined by means of neutron specular reflectivity. Samples were

Paris-Sud XI, Université de

189

Computation of Wave Loads under Multidirectional Sea States for Floating Offshore Wind Turbines: Preprint  

SciTech Connect

This paper focuses on the analysis of a floating wind turbine under multidirectional wave loading. Special attention is given to the different methods used to synthesize the multidirectional sea state. This analysis includes the double-sum and single-sum methods, as well as an equal-energy discretization of the directional spectrum. These three methods are compared in detail, including the ergodicity of the solution obtained. From the analysis, the equal-energy method proved to be the most computationally efficient while still retaining the ergodicity of the solution. This method was chosen to be implemented in the numerical code FAST. Preliminary results on the influence of these wave loads on a floating wind turbine showed significant additional roll and sway motion of the platform.

Duarte, T.; Gueydon, S.; Jonkman, J.; Sarmento, A.

2014-03-01T23:59:59.000Z

190

Centrifugal float-sink testing of fine coal: An interlaboratory test program  

SciTech Connect

The Pittsburgh Energy Technology Center (PETC) recently completed an interlaboratory test program (ITP) involving eight laboratories that are currently performing washability analyses of coals finer than 500-microns top size using a centrifugal float-sink technique. With the current and future development of fine coal cleaning technology, there is a growing need to determine the washability of coals in extremely fine sizes, in some cases as fine as several microns by zero. However, much uncertainty exists about limitations relative to particle size and the viability of centrifugal float-sink procedures in achieving ``ideal`` specific gravity separations (i.e, the perfect separation of particles according to their density). The objective of this work was to develop an understanding regarding the variables affecting the procedure and initiate a process for obtaining a standard procedure. (VC)

Killmeyer, R.P.; Hucko, R.E. [USDOE Pittsburgh Energy Technology Center, PA (United States). Coal Preparation Div.; Jacobsen, P.S. [Burns and Roe Services Corp., Pittsburgh, PA (United States)

1991-10-01T23:59:59.000Z

191

Centrifugal float-sink testing of fine coal: An interlaboratory test program  

SciTech Connect

The Pittsburgh Energy Technology Center (PETC) recently completed an interlaboratory test program (ITP) involving eight laboratories that are currently performing washability analyses of coals finer than 500-microns top size using a centrifugal float-sink technique. With the current and future development of fine coal cleaning technology, there is a growing need to determine the washability of coals in extremely fine sizes, in some cases as fine as several microns by zero. However, much uncertainty exists about limitations relative to particle size and the viability of centrifugal float-sink procedures in achieving ideal'' specific gravity separations (i.e, the perfect separation of particles according to their density). The objective of this work was to develop an understanding regarding the variables affecting the procedure and initiate a process for obtaining a standard procedure. (VC)

Killmeyer, R.P.; Hucko, R.E. (USDOE Pittsburgh Energy Technology Center, PA (United States). Coal Preparation Div.); Jacobsen, P.S. (Burns and Roe Services Corp., Pittsburgh, PA (United States))

1991-10-01T23:59:59.000Z

192

Time-domain Simulation of Multibody Floating Systems based on State-space Modeling Technology  

E-Print Network (OSTI)

. Yusong Cao and Dr. Xiaobo Chen for their kind help and valuable comments on my dissertation topic. I deeply appreciate the help from my classmates and other group members, including Liqing Huang, Maopeng Fang, John Bandas, Zhiyong Su and Amitava Guha...-craft .......................................... 89 5.2 RAOs of the T-craft........................................................................ 90 5.3 Time-domain Responses of the Three-body Floating System ....... 95 VI CONCLUSIONS AND FUTURE WORK...

Yu, Xiaochuan

2012-10-19T23:59:59.000Z

193

Effects of Second-Order Hydrodynamics on a Semisubmersible Floating Offshore Wind Turbine: Preprint  

SciTech Connect

The objective of this paper is to assess the second-order hydrodynamic effects on a semisubmersible floating offshore wind turbine. Second-order hydrodynamics induce loads and motions at the sum- and difference-frequencies of the incident waves. These effects have often been ignored in offshore wind analysis, under the assumption that they are significantly smaller than first-order effects. The sum- and difference-frequency loads can, however, excite eigenfrequencies of the system, leading to large oscillations that strain the mooring system or vibrations that cause fatigue damage to the structure. Observations of supposed second-order responses in wave-tank tests performed by the DeepCwind consortium at the MARIN offshore basin suggest that these effects might be more important than originally expected. These observations inspired interest in investigating how second-order excitation affects floating offshore wind turbines and whether second-order hydrodynamics should be included in offshore wind simulation tools like FAST in the future. In this work, the effects of second-order hydrodynamics on a floating semisubmersible offshore wind turbine are investigated. Because FAST is currently unable to account for second-order effects, a method to assess these effects was applied in which linearized properties of the floating wind system derived from FAST (including the 6x6 mass and stiffness matrices) are used by WAMIT to solve the first- and second-order hydrodynamics problems in the frequency domain. The method has been applied to the OC4-DeepCwind semisubmersible platform, supporting the NREL 5-MW baseline wind turbine. The loads and response of the system due to the second-order hydrodynamics are analysed and compared to first-order hydrodynamic loads and induced motions in the frequency domain. Further, the second-order loads and induced response data are compared to the loads and motions induced by aerodynamic loading as solved by FAST.

Bayati, I.; Jonkman, J.; Robertson, A.; Platt, A.

2014-07-01T23:59:59.000Z

194

Operations Information  

NLE Websites -- All DOE Office Websites (Extended Search)

Standards BPA Operations Information (OPI) Transmission Services operates and plans for regional and national system needs. Transmission Services coordinates system operation and...

195

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

- Fargo, ND Introductions * Lloyd Linke - Operations Manager * Gary Hoffman - Attorney-Advisor * Linda Cady-Hoffman - Rates Manager * Steve Sanders - Operations and Transmission...

196

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

and via Web Introductions * Lloyd Linke - Operations Manager * Gary Hoffman - Attorney-Advisor * Linda Cady-Hoffman - Rates Manager * Steve Sanders - Operations and Transmission...

197

Offshore floating vertical axis wind turbines, dynamics modelling state of the art. Part III: Hydrodynamics and coupled modelling approaches  

Science Journals Connector (OSTI)

Abstract The need to further exploit offshore wind resources has pushed offshore wind farms into deeper waters, requiring the use of floating support structures to be economically sustainable. The use of conventional wind turbines may not continue to be the optimal design for floating applications. Therefore it is important to assess other alternative configurations in this context. Vertical axis wind turbines (VAWTs) are one promising configuration, and it is important to first understand the coupled and relatively complex dynamics of floating \\{VAWTs\\} to assess the technical feasibility. As part of this task, a series of articles have been developed to present a comprehensive literature review covering the various areas of engineering expertise required to understand the coupled dynamics involved in floating VAWTs. This third article focuses on approaches to develop an efficient coupled model of dynamics (considering aerodynamics, hydrodynamics, structural and mooring line dynamics, and control dynamics) for floating VAWTs, as well as suitable semi-analytical hydrodynamic models for this type of coupled dynamics models. Emphasis is also placed on utilising computationally efficient models and programming strategies. A comparison of the various forces acting on a floating VAWT with the three main floating support structure (spar, semi-submersible and tension-leg-platform) is also presented to highlight the relative dominant forces and hence importance of model accuracy representing these forces. Lastly a concise summary covering this series of articles is presented to give the reader an overview of this interdisciplinary research area. This article has been written both for researchers new to this research area, outlining underlying theory whilst providing a comprehensive review of the latest work, and for experts in this area, providing a comprehensive list of the relevant references where the details of modelling approaches may be found.

Michael Borg; Maurizio Collu

2014-01-01T23:59:59.000Z

198

Microsoft PowerPoint - Tsinghua Slideshow final for distribution...  

Energy Savers (EERE)

Documents & Publications Microsoft PowerPoint - Final translated version of Tsinghua Speech Idaho Operations AMWTP Fact Sheet Heating Ventilation and Air Conditioning Efficiency...

199

New York Nuclear Profile - Nine Mile Point Nuclear Station  

U.S. Energy Information Administration (EIA) Indexed Site

Nine Mile Point Nuclear Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

200

Computing the Nondominated Nash Points of a Normal Form Game ...  

E-Print Network (OSTI)

points and we conduct a comprehensive computational study in which we investigate the ...... Mathematical Methods of Operations Research, 52(1):6577.

2014-11-24T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Offshore floating vertical axis wind turbines, dynamics modelling state of the art. Part II: Mooring line and structural dynamics  

Science Journals Connector (OSTI)

Abstract The need to exploit enhanced wind resources far offshore as well as in deep waters requires the use of floating support structures to become economically viable. The conventional three-bladed horizontal axis wind turbine may not continue to be the optimal design for floating applications. Therefore it is important to assess alternative concepts in this context that may be more suitable. Vertical axis wind turbines (VAWTs) are a promising concept, and it is important to first understand the coupled and relatively complex dynamics of floating \\{VAWTs\\} to assess their technical feasibility. As part of this task, a series of articles have been developed to present a comprehensive literature review covering the various areas of engineering expertise required to understand the coupled dynamics involved in floating VAWTs. This second article focuses on the modelling of mooring systems and structural behaviour of floating VAWTs, discussing various mathematical models and their suitability within the context of developing a model of coupled dynamics. Emphasis is placed on computational aspects of model selection and development as computational efficiency is an important aspect during preliminary design stages. This paper has been written both for researchers new to this research area, outlining underlying theory whilst providing a comprehensive review of the latest work, and for experts in this area, providing a comprehensive list of the relevant references where the details of modelling approaches may be found.

Michael Borg; Maurizio Collu; Athanasios Kolios

2014-01-01T23:59:59.000Z

202

Comparison of Second-Order Loads on a Semisubmersible Floating Wind Turbine: Preprint  

SciTech Connect

As offshore wind projects move to deeper waters, floating platforms become the most feasible solution for supporting the turbines. The oil and gas industry has gained experience with floating platforms that can be applied to offshore wind projects. This paper focuses on the analysis of second-order wave loading on semisubmersible platforms. Semisubmersibles, which are being chosen for different floating offshore wind concepts, are particularly prone to slow-drift motions. The slack catenary moorings usually result in large natural periods for surge and sway motions (more than 100 s), which are in the range of the second-order difference-frequency excitation force. Modeling these complex structures requires coupled design codes. Codes have been developed that include turbine aerodynamics, hydrodynamic forces on the platform, restoring forces from the mooring lines, flexibility of the turbine, and the influence of the turbine control system. In this paper two different codes are employed: FAST, which was developed by the National Renewable Energy Laboratory, and aNySIM, which was developed by the Maritime Research Institute Netherlands. The hydrodynamic loads are based on potential-flow theory, up to the second order. Hydrodynamic coefficients for wave excitation, radiation, and hydrostatic forces are obtained with two different panel codes, WAMIT (developed by the Massachusetts Institute of Technology) and DIFFRAC (developed by MARIN). The semisubmersible platform, developed for the International Energy Agency Wind Task 30 Offshore Code Comparison Collaboration Continuation project is used as a reference platform. Irregular waves are used to compare the behavior of this platform under slow-drift excitation loads. The results from this paper highlight the effects of these loads on semisubmersible-type platforms, which represent a promising solution for the commercial development of the offshore deepwater wind resource.

Gueydon, S.; Duarte, T.; Jonkman, J.; Bayati, I.; Sarmento, A.

2014-03-01T23:59:59.000Z

203

Effect of Second-Order Hydrodynamics on a Floating Offshore Wind Turbine  

SciTech Connect

The design of offshore floating wind turbines uses design codes that can simulate the entire coupled system behavior. At the present, most codes include only first-order hydrodynamics, which induce forces and motions varying with the same frequency as the incident waves. Effects due to second- and higher-order hydrodynamics are often ignored in the offshore industry, because the forces induced typically are smaller than the first-order forces. In this report, first- and second-order hydrodynamic analysis used in the offshore oil and gas industry is applied to two different wind turbine concepts--a spar and a tension leg platform.

Roald, L.; Jonkman, J.; Robertson, A.

2014-05-01T23:59:59.000Z

204

Imbalance response of a rotor supported on a floating ring fluid film bearing  

E-Print Network (OSTI)

rig model. 5. 14 Rotordynamic damped natural frequency map for nominal clearance configuration (C, =114. 3 pm, C, =165. 1tim). 5. 15 Rotordynamic damped natural frequency map for n- clearance configuration (C, =114. 3 pm, C, =152. 4 lrm) 5. 16...). . . . . . . . . . 7. 16 Peak to peak vibration amplitude versus journal speed. Pressure Page 86 supply 41. 4 kPa (6 psig). nominal clearance configuration (C, =114. 3 lrm and C, =165. 1 lrm). Residual imbalance. Semi-floating bearing. . 88 7. 17 Contour plots...

Naranjo, Julio Enrique

2012-06-07T23:59:59.000Z

205

A rational expectations model of the U.K. under floating exchange rates  

Science Journals Connector (OSTI)

This paper constructs a model of an open economy with both trade and capital flows. Private sector wealth holders are assumed to be concerned with balance sheet ratios as in a portfolio choice theoretic model. Rational expectations in the strict Muth sense is introduced via the asset allocation decision by the private sector. International trade and capital flows are treated as in the monetary theory of the balance of payments. The model is constructed for the U.K. economy and simulation and forecasting exercises are conducted for the floating period.

Patrick Minford; Michael Brech; Kent Matthews

1980-01-01T23:59:59.000Z

206

Hull/mooring/riser coupled dynamic analysis of a floating platform in time domain  

E-Print Network (OSTI)

this program is about ten times faster than its sibling based on the same FEM theory given by D. L. Garrett in 19g2. The Present Case Study In order to examine the benefits of non-linear coupled dynamic analysis of floating offshore structures with flexible... dynamic analysis, a finite-element-method (FEM) program WINPOST was used (e. g. Kim, 1997; Ran and Kim, 1997). The mooring dynamics program was based on a global-coordinate- based FEM (Garrett, 1982), which is expected to be more efficient than...

Zheng, Weizhong

2000-01-01T23:59:59.000Z

207

New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet)  

SciTech Connect

Researchers at the National Renewable Energy Laboratory (NREL) developed a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology.

Not Available

2011-02-01T23:59:59.000Z

208

ARM - Point Reyes News  

NLE Websites -- All DOE Office Websites (Extended Search)

Experiment Planning MASRAD Proposal Abstract and Related Campaigns Outreach Posters Climate Research at Point Reyes National Seashore (horizontal) Climate Research at...

209

Contemporary Trends power point  

E-Print Network (OSTI)

Power point slides guiding presentation on closing the gap between political acceptability and administrative sustainability as a prerequisite for effective governance. Leadership challenges are described

Nalbandian, John

2013-02-01T23:59:59.000Z

210

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. Department of Energy U.S. Department of Energy Environmental Management Environmental Management Opportunities for Opportunities for Continuous Improvement & Continuous Improvement & Operational Excellence in Operational Excellence in DOE DOE ' ' s Transportation s Transportation Operations Operations Dennis Ashworth Dennis Ashworth Director, Environmental Management Director, Environmental Management Office of Transportation Office of Transportation Transportation Transportation External External Coordination Coordination Working Group, Working Group, March 2006 March 2006 U.S. Department of Energy, Environmental Management, Office of Transportation Dedicated to Protecting the Public and the Environment in all our Transportation Operations Department of Energy Department of Energy

211

Model Development and Loads Analysis of a Wind Turbine on a Floating Offshore Tension Leg Platform  

SciTech Connect

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. Models in this code are of greater fidelity than most of the models that have been used to analyze floating turbines in the past--which have neglected important hydrodynamic and mooring system effects. The report provides a description of the development process of a TLP model, which is a modified version of a Massachusetts Institute of Technology design derived from a parametric linear frequency-domain optimization process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the International Electrotechnical Commission offshore wind turbine design standard was performed with the verified TLP model. Response statistics, extreme event tables, fatigue lifetimes, and selected time histories of design-driving extreme events are analyzed and presented. Loads for the wind turbine on the TLP are compared to those of an equivalent land-based turbine in terms of load ratios. Major instabilities for the TLP are identified and described.

Matha, D.; Fischer, T.; Kuhn, M.; Jonkman, J.

2010-02-01T23:59:59.000Z

212

Development of a free vortex wake method code for offshore floating wind turbines  

Science Journals Connector (OSTI)

Offshore floating wind turbines (OFWTs) present unique aerodynamic analysis challenges. Motionderived velocity perturbations in the wake necessitate higherfidelity aerodynamic analysis methods than the ubiquitous momentum balance techniques currently in use. A more physicallysound approach is to model the wake generated by a wind turbine rotor as a freely convecting lattice, using the resultant inflow to estimate rotor loads, as it done with a free vortex wake method (FVM). The FVM code Wake Induced Dynamics Simulator (WInDS) was developed at the University of Massachusetts at Amherst to predict the aerodynamic loading and wake evolution of an OFWT to a higher degree of accuracy than is possible via momentum balance methods. A series of validation cases were conducted to provide some basis for applying \\{WInDS\\} to floating wind turbine cases, for which no aerodynamic experimental data is currently available. The results from these tests show that \\{WInDS\\} is able to accurately predict the aerodynamicallyderived loads and wake structures generated by various fixed and rotarywing cases, and may therefore be applied to more complex cases, like OFWTs, with a degree of confidence.

T. Sebastian; M.A. Lackner

2012-01-01T23:59:59.000Z

213

Point-Based Graphics  

Science Journals Connector (OSTI)

The polygon-mesh approach to 3D modeling was a huge advance, but today its limitations are clear. Longer render times for increasingly complex images effectively cap image complexity, or else stretch budgets and schedules to the breaking point. Point-based ... Keywords: Computer Graphics, Computers

Markus Gross; Hanspeter Pfister

2007-06-01T23:59:59.000Z

214

Point-contact spectroscopy  

Science Journals Connector (OSTI)

Micro-contacts between metals at low temperatures reveal non-linear structures in the current-voltage characteristics. These deviations from Ohm's law allow an energy-resolved spectroscopy of the interaction of the conduction electrons with elementary excitations (e.g. phonons) in a metal. To explain the method, the important parameters (electron mean free path versus contact dimension) in point-contact spectroscopy will be discussed together with examples of spectroscopic information obtained in various systems. Local temperature gradients in the contact region offer the possibility to study thermo-electric phenomena in small constrictions, such as thermal voltages in non-homogeneous contacts and quenching of the phonon-drag term in the thermo-power in homogeneous contacts. Besides these aspects of the point-contact technique, recent experiments will be shown with applications of point contacts other than just spectroscopy: magneto-resistance of a point contact, high-frequency rectification with a point contact as the non-linear element, electron focusing using a double point-contact set-up, electrical noise in constrictions and generation of phonons by means of point contacts.

A M Duif; A G M Jansen; P Wyder

1989-01-01T23:59:59.000Z

215

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

62015 Directorate Operations Manager Carol Scott Senior Technical Advisor Chris Patton Environment, Safety, and Health Directorate Director John Powell Gina O'Brien, Executive...

216

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

(reflectivity, radial velocity, and spectral width) are stored. The figure below shows a simulation of a spectra plot. Current operational software estimates the spectra moments...

217

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

waste, while designing, constructing, commissioning and operating the Waste Treatment Plant until the mission is complete. 6 Integrated Path to Mission Completion 7 Our Team...

218

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Kyle Spence, Business Manager Lisa Barr, Doug Rose, Legal Directorate Operations Gail Johnson, Manager Associate Laboratory Director Brent Park Angie Raby, Executive Secretary...

219

Aerodynamic Thrust Modelling in Wave Tank Tests of Offshore Floating Wind Turbines Using a Ducted Fan  

Science Journals Connector (OSTI)

Wave tank testing of scaled models is standard practice during the development of floating wind turbine platforms for the validation of the dynamics of conceptual designs. Reliable recreation of the dynamics of a full scale floating wind turbine by a scaled model in a basin requires the precise scaling of the masses and inertias and also the relevant forces and its frequencies acting on the system. The scaling of floating wind turbines based on the Froude number is customary for basin experiments. This method preserves the hydrodynamic similitude, but the resulting Reynolds number is much lower than in full scale. The aerodynamic loads on the rotor are therefore out of scale. Several approaches have been taken to deal with this issue, like using a tuned drag disk or redesigning the scaled rotor. This paper describes the implementation of an alternative method based on the use of a ducted fan located at the model tower top in the place of the rotor. The fan can introduce a variable force that represents the total wind thrust by the rotor. A system controls this force by varying the rpm, and a computer simulation of the full scale rotor provides the desired thrust to be introduced by the fan. This simulation considers the wind turbine control, gusts, turbulent wind, etc. The simulation is performed in synchronicity with the test and it is fed in real time by the displacements and velocities of the platform captured by the acquisition system. Thus, the simulation considers the displacements of the rotor within the wind field and the calculated thrust models the effect of the aerodynamic damping. The system is not able currently to match the effect of gyroscopic momentum. The method has been applied during a test campaign of a semisubmersible platform with full catenary mooring lines for a 6MW wind turbine in scale 1/40 at Ecole Centrale de Nantes. Several tests including pitch free decay under constant wind and combined wave and wind cases have been performed. Data from the experiments are compared with aero-servo-hydro-elastic computations with good agreement showing the validity of the method for the representation of the scaled aerodynamics. The new method for the aerodynamic thrust scaling in basin tests is very promising considering its performance, versatility and lower cost in comparison with other methods.

Jos Azcona; Faisal Bouchotrouch; Marta Gonzlez; Joseba Garcianda; Xabier Munduate; Felix Kelberlau; Tor A Nygaard

2014-01-01T23:59:59.000Z

220

Measurement of Vertical Kinetic Energy and Vertical Velocity Skewness in Oceanic Boundary Layers by Imperfectly Lagrangian Floats  

Science Journals Connector (OSTI)

The effects of upward buoyancy on the accuracy with which Lagrangian floats can measure the Eulerian mean variance ?ww?E and skewness SwE of vertical fluid velocity w in the wind-driven upper-ocean boundary layer is investigated using both ...

Ramsey R. Harcourt; Eric A. DAsaro

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

paper2  

E-Print Network (OSTI)

cision. The costs and accuracies are compared. The code includes lines to count the flops (number of floating point operations) for all the steps and subroutines.

2014-01-21T23:59:59.000Z

222

NEW EFFICIENT AND ROBUST HSS CHOLESKY FACTORIZATION ...  

E-Print Network (OSTI)

The overall factorization requires fewer floating point operations and has better data locality when compared to the recent HSS method in [SIAM J. Matrix Anal.

2012-04-23T23:59:59.000Z

223

Hyper-sparsity in the revised simplex method and how to exploit it  

E-Print Network (OSTI)

Oct 8, 2002 ... to be applied (unless there is an improbable amount of cancellation). Indeed the number of floating point operations required to perform these...

1910-40-10T23:59:59.000Z

224

Date 2014/05/06 By B. Lucier * final-tests.scm: Add dirichlet-tests ...  

E-Print Network (OSTI)

final-tests.scm: specialize all floating-point operations to be either fixnum or flonum * matlab-to-pufs-triangulation.scm: New file; define coordinates->vertices,

225

540.ps.gz  

E-Print Network (OSTI)

2 must operate correctly on the real numbers non-representable in the. floating point form. Instead of such real numbers, we use thin intervals bounded by...

226

Optimization Online - Block Structured Quadratic Programming for ...  

E-Print Network (OSTI)

Sep 11, 2009 ... We give a detailed account on the required number of floating point operations, depending on the process dimensions. Finally we demonstrate...

Christian Kirches

2009-09-11T23:59:59.000Z

227

Handling Nonnegative Constraints in Spectral Estimation  

E-Print Network (OSTI)

However, these methods require O(n^6) floating point operations per iteration, if a general-purpose implementation is used. We introduce a much more efficient...

Brien Alkire

228

Wave transmission and mooring-force characteristics of pipe-tire floating breakwaters  

SciTech Connect

The results are presented of a series of prototype scale tests of a floating breakwater that incorporates massive cylindrical members (steel or concrete pipes, telephone poles, etc.) in a matrix of scrap truck or automobile tires, referred to as the Pipe-Tire Breakwater (PT-Breakwater). Tests were conducted in the large wave tank at the US Army Coastal Engineering Research Center (CERC). Breakwater modules were preassembled at SUNY in Buffalo, New York, and then transported to CERC by truck, where final assembly on location was again performed by SUNY personnel. Wave-tank tests were conducted jointly by CERC and SUNY personnel. A series of wave-tank experiments and mooring system load-deflection tests were performed, and are described. Wave-transmission and mooring-load characteristics, based on 402 separate tests, were established and are reported. (LCL)

Harms, Volker W.; Westerink, Joannes J.

1980-10-01T23:59:59.000Z

229

Concept Design Verification of a Semi-submersible Floating Wind Turbine Using Coupled Simulations  

Science Journals Connector (OSTI)

Abstract A concept design has been made of a GustoMSC Tri-Floater semi-submersible equipped with the NREL 5MW reference wind turbine. To capture the interaction between wind loads on the pitch controlled rotor and motions of the floating structure, aero- hydro-servo-elastic simulations have been performed using Ansys AQWA coupled to PHATAS. Based on the simulation results, it is concluded that the Tri-Floater design meets the requirements regarding motions, accelerations and mooring loads. Furthermore, it is shown that uncoupled frequency domain analysis can be applied to assess the wave frequency component of the global motion response in early design stages, where computationally demanding coupled analyses are less practical.

Fons Huijs; Rogier de Bruijn; Feike Savenije

2014-01-01T23:59:59.000Z

230

Marine-current power generation by diffuser-augmented floating hydro-turbines  

Science Journals Connector (OSTI)

The oceans represent a huge energy reservoir consistent of stored solar and gravitational energy in several forms, causing ceaseless movements of an enormous volume of water. This energy is generally diffuse but, in many cases, significantly more concentrated than other forms of renewable energy already being successfully exploited on land. Among the ocean-energy resources, wave and marine-current energy emerge as the most promising options for massive ocean-energy generation in the immediate future. The main objective of this paper is to focus on trends that can lead to a feasible massive marine-current-power future scenario, and to introduce a technological solution which could help to reach that goal. We shall describe the main features of a floating marine-current-power system that introduces conceptual innovations in order to improve the technical and economical performance.

F.L. Ponta; P.M. Jacovkis

2008-01-01T23:59:59.000Z

231

OPERATIONS (OPS)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OPS) OPS) OBJECTIVE OPS.1 The formality and discipline of operations is adequate to conduct work safely and programs are in place to maintain this formality and discipline. (CR 13) Scope: The Conduct of Operations Program was evaluated during the recent KE Basin FTS ORR and was found to be adequately implemented. Based on this result and the subsequent program enhancements, the scope of the review is to be limited to the SWS operating and maintenance evolutions. Criteria * Programmatic elements of conduct of operations are in place for SWS operations. (DOE Order 5480.19) * The SWS operations personnel adequately demonstrate the principles of conduct of operations requirements during the shift performance period. (DOE Order 5480.19)

232

Strategic Focus Points  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Focus Points Focus Points June 2011 1. Establish the human capital and organizational foundation to create a high-performing organization. 2. Implement a cyber risk-management and incident response program that ensures effective security of Federal and M&O networks, provides appropriate flexibility, and meets legal requirements and OMB expectations. 3. Improve IT Services (EITS) into a best-in-class provider from both a technical and business perspective. 4. Implement and institutionalize a reformed, integrated information management governance process that respects the goal to treat M&Os distinctively different than true Federal entities. 5. Transition to 5-year planning and programming, using the NNSA Planning, Programming, Budgeting and Evaluation (PPBE) process as a starting point to include resource and requirements validation.

233

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cleanup Project _____________________ September 21, 2005 FRR Rail Shipment to Idaho Presentation to the DOE Transportation External coordination Working Group (TEC) Mark R. Arenaz DOE-ID Idaho Cleanup Project U.S. Department of Energy Idaho Operations Office 2 DOE - Idaho Operations Office FRR Rail Shipment * Overview of Shipment * Operational Aspects * Emergency Response Preparation * Institutional Program * Route Determination * Lessons Learned * Pictures Idaho Cleanup Project U.S. Department of Energy Idaho Operations Office 3 Overview of Shipment * First shipment of Foreign Research Reactor (FRR) Spent Nuclear Fuel (SNF) * Spent Fuel originated in So. Korea * Transport by dedicated ship to Naval Weapons Station - Concord (NWSCo) * Transport by dedicated rail from NWSCo to Idaho National Laboratory Site

234

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Aiken, SC Began operations in 1996 Converts waste to solid glass form suitable for long-term storage and disposal Click to edit Master title style Click to edit Master subtitle...

235

Operations | National Nuclear Security Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

| National Nuclear Security Administration | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Operations Home > About Us > Our Programs > Emergency Response > Responding to Emergencies > Operations Operations NNSA's Emergency Response Operations program acts as the headquarters command and control, functioning as the coordinating focal point for all

236

Operations | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

| National Nuclear Security Administration | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Operations Home > About Us > Our Programs > Emergency Response > Responding to Emergencies > Operations Operations NNSA's Emergency Response Operations program acts as the headquarters command and control, functioning as the coordinating focal point for all

237

Operation Diagnostics: Use of Visualization Techniques and Operation  

NLE Websites -- All DOE Office Websites (Extended Search)

Operation Diagnostics: Use of Visualization Techniques and Operation Operation Diagnostics: Use of Visualization Techniques and Operation Patterns to Verify and Optimize Dynamic Building and System Operation Speaker(s): Oliver Baumann Date: December 7, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Peng Xu Building automation systems (BAS) and building energy management systems (BEMS) have been used in modern edifices for the last 2 decades. These systems measure, process, and monitor a huge amount of data to operate the building and systems more or less properly. Often, the data is only used to signal failures or break-downs of systems or components. Further information of the data to analyze and diagnose the building operation is not used due to the lack of analysis methods and tools. Within the Operation Diagnostics, different visualization techniques are applied to

238

SPEAR Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Interface 1113 N. Kurita J. Langton Vacuum TSP's 1120 J. Corbett A. Terebilo MATLAB Applications - Basics 1121 F. Rafael Booster Kicker Upgrade, Operation Manual 1121...

239

operations center  

National Nuclear Security Administration (NNSA)

1%2A en Operations Center http:nnsa.energy.govaboutusourprogramsemergencyoperationscounterterrorismoperationscenter

...

240

TEPP Points of Contact | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Services » Waste Management » Packaging and Transportation » Services » Waste Management » Packaging and Transportation » Transportation Emergency Preparedness Program » TEPP Points of Contact TEPP Points of Contact TEPP is a national program managed at a headquarters level and implemented through the TEPP Central Operations Center managed by Technical Resources Group, Inc. For additional information on the TEPP, or to find out how you can obtain TEPP materials or schedule a class, contact either the HQ Program Manager or TEPP Central Operations. EM Contact EM Headquarters Program Manager Ella McNeil, Office of Transportation Ella.McNeil@em.doe.gov U.S. Department of Energy Washington, DC 20585 TEPP Central Operations admin@merrtt.com 208-528-8895 Waste Management Nuclear Materials & Waste Tank Waste and Waste Processing

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

February 2013 Point Sheets  

E-Print Network (OSTI)

February 2013 MPTs and Point Sheets National Conference of Bar Examiners 302 South Bedford Street)...............................................30 LIBRARY Excerpts from the Indian Child Welfare Act of 1978, 25 U.S.C. §§ 1901 et seq...................33 Department of the Interior, Bureau of Indian Affairs, Guidelines for State Courts; Indian Child Custody

Marsh, David

242

SETTLEMENT POINTS Congo, Democra  

E-Print Network (OSTI)

! ! ! ! ( ( ( ( ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ( ( ( ( ( (( ( ( ( ( ( ( ( ( (!( Botswana Congo, Democra Congo Namibia Zambia GRUMPv1 A t l a n t i c O c e a n ´ 0 250 500 Km Lambert. Available at:http://sedac.ciesin.columbia.edu/gpw/ Democratic Republic of Congo Settlement Points

Columbia University

243

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vehicle to Grid Vehicle to Grid Demonstration Project by Willett Kempton College of Earth, Ocean, and Environment Department of Electrical and Computer Engineering Center for Carbon-free Power Integration University of Delaware 2010 Smart Grid Peer Review Office of Electricity Delivery and Energy Reliability, DOE Purpose & Objectives * Create the Gri d I ntegrated V ehi cl e (GIV), then operate, permit, and test it * A nalyze vehicle use, our vehicles & large data base of 400 vehicles daily driving * A nalyze market for EVs and V2G * Develop softw are to dispatch pow er from vehicles -> Operate in real time! * Tw o-year aw ard, $750,000, close N ov '10 Activities (2-year) * Research: Driving patterns; economic value; self-learning trip predictions * Industrial: Facilitate EV retrofit operation

244

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Brent J. Heuser Brent J. Heuser Nuclear, Plasma, & Radiological Engineering University of Illinois at Urbana-Champaign US DOE NEUP ATF-IRP-UIUC Prime Engineered Zircaloy Cladding Modifications for Improved Accident Tolerance of LWR Fuel Participants UIUC AFT-IRP Philosophical Approach U.S. LWR assets are safe, well-maintained, and well-operated. Zr-based cladding performs well in LWRs under normal operational conditions. Extensive performance data base with respect to normal and transient conditions. Regulatory approval/industry acceptance for modified Zr-based cladding path of least resistance. Modifications of Zr-based cladding can lead to ATF without significant impact on performance under normal operational conditions. Two Solution Pathways to Mitigate Accelerated

245

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 1 1 1 Safety Culture in the U.S. Nuclear Regulatory Commission's Reactor Oversight Process Undine Shoop Chief, Health Physics and Human Performance Branch Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 2 Topics * Purpose of the Reactor Oversight Process (ROP) * ROP Framework * Safety Culture within the ROP * Safety Culture Assessments Reactor Oversight Process * The ROP is the NRC's program to inspect operating nuclear reactors, to assess overall performance, and to respond to declining performance * NRC resources are focused on those aspects of performance having the greatest impact on safe plant operation * Applies greater regulatory attention to facilities with

246

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

R. Gupta, M. Anerella, J. Cozzolino, R. Gupta, M. Anerella, J. Cozzolino, W. Sampson, Peter Wanderer, BNL, NY USA A Zeller, FRIB, MI, USA Superconducting Magnet Division HTS Quad for FRIB Ramesh Gupta , ..., BNL, Al Zeller, FRIB Slide No. 2 ASC2012 October 10, 2012 Outline * Motivation for HTS magnets in FRIB - HTS is now the baseline design for some critical magnets * First Generation Design - 30 K operation * Second Generation Design - 50 K operation and higher gradient * Summary and future outlook Superconducting Magnet Division HTS Quad for FRIB Ramesh Gupta , ..., BNL, Al Zeller, FRIB Slide No. 3 ASC2012 October 10, 2012 FRIB * Facility for Rare Isotope Beams (FRIB) will create rare isotopes

247

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

INDUSTRY DAY INDUSTRY DAY Emergency Operations Training Academy Support Services James (Jim) Cochran Headquarters Support Section Headquarters Acquisition Branch Business Services Division January 6, 2012 2 Agenda * 0900 - Arrival/Registration * 0915 - Opening Remarks - Jim Cochran, Contracting Officer * 0925 - Emergency Operations Training Academy's (EOTA) Overview - Paul Jenkins, Director, EOTA * 0950 - Review of EOTA Request for Proposals * 1030 -EOTA Server Facility * 1100 - Questions * 1130 - Closing Comments 3 Notice * Presentation is based upon current information and plan of action * Input may be considered * Request for Proposal is the only document that is to be relied upon in determining the Government's needs 4 Overview * Purpose of Industry Day

248

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Coupling Between Oceanic Upwelling and Cloud Coupling Between Oceanic Upwelling and Cloud Coupling Between Oceanic Upwelling and Cloud - - Aerosol Properties Aerosol Properties at the AMF Point Reyes Site at the AMF Point Reyes Site Maureen Dunn , Mike Jensen , Pavlos Kollias , Mark Miller , Peter Daum Mary Jane Bartholomew , David Turner , Elisabeth Andrews and Anne Jefferson Introduction Ground based observations from the MASRAD, Pt. Reyes AMF July 1-Sept 15, 2005 indicate a relationship between coastal marine stratus cloud properties, boundary layer cloud condensation nuclei and the upwelling of cool oceanic waters measured at an offshore NOAA buoy. Cloud Drizzle to CCN Atmosphere to Cloud Upwelling SST to Atmosphere Conclusion Coastal marine stratus clouds increase in thickness as the underlying sea surface

249

EAMidnightPointMahogany  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assessment Assessment Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon April 2013 Prepared By Bureau of Land Management - Prineville and Burns Districts DOI-BLM-OR-P040-2011-0021-EA DOE/EA-1925 Environmental Assessment Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon April 2013 Lead Agency United States Department of the Interior Bureau of Land Management Prineville District 3050 N.E. 3rd Street, Prineville, OR 97754 Tel: 541 416 6700 Burns District 28910 Hwy 20 West, Hines, OR 97738 Tel: 541 573 4400 Cooperating Agency United States Department of Energy Golden Field Office Golden, Colorado 80401 Tel: 720-356-1563 Fax: 720-356-1560 April 2013 Environmental Assessment Table of Contents 1

250

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commercialization of the SuperOPF Commercialization of the SuperOPF Framework: Phase III (Theme: Co- optimization Stochastic SuperOPF- renewables) Performers: PSERC: Hsiao-Dong Chiang - LEAD Cornell University: Ray Zimmerman Bigwood Systems, Inc.: Patrick Causgrove, Bin Wang Phase I: 1.(support industrial model) A commercial-grade core SuperOPF software supporting various industrial-grade power system models such as (i) CIM-compliance; and (ii) PSS/E data format 2. A multi-stage OPF solver with adaptive homotopy-based Interior Point Method for large- scale power systems (PJM: 14,000-bus data) Bigwood Systems Inc., 2013 3 Results: Efficiency and Robustness (Analytical Jacobian matrices) Loading Conditions One-Staged Interior Point Method Multi-Staged Scheme 1 Succeeded Succeeded

251

NREL Computer Models Integrate Wind Turbines with Floating Platforms (Fact Sheet), The Spectrum of Clean Energy Innovation, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Models Computer Models Integrate Wind Turbines with Floating Platforms Far off the shores of energy-hungry coastal cities, powerful winds blow over the open ocean, where the water is too deep for today's seabed-mounted offshore wind turbines. For the United States to tap into these vast offshore wind energy resources, wind turbines must be mounted on floating platforms to be cost effective. Researchers at the National Renewable Energy Laboratory (NREL) are supporting that development with computer models that allow detailed analyses of such floating wind turbines. Coupling wind turbines and floating platforms requires complex computer models. Land- based wind turbines are designed and analyzed using simulation tools, called computer-aided engineering (CAE) design tools, that are capable of predicting a design's dynamic response to

252

A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study.  

SciTech Connect

This analysis utilizes a 5 - MW VAWT topside design envelope created by Sandia National Laborator ies to compare floating platform options fo r each turbine in the design space. The platform designs are based on two existing designs, the OC3 Hywind spar - buoy and Principal Power's WindFloat semi - submersible. These designs are scaled using Froude - scaling relationships to determine an appropriately sized spar - buoy and semi - submersible design for each topside. Both the physical size of the required platform as well as mooring configurations are considered. Results are compared with a comparable 5 - MW HAWT in order to identify potential differences in the platform and mooring sizing between the VAWT and HAWT . The study shows that there is potential for cost savings due to reduced platform size requirements for the VAWT.

Bull, Diana L; Fowler, Matthew; Goupee, Andrew

2014-08-01T23:59:59.000Z

253

Final report on the design and development of a Rolling Float Meter for drilling-fluid outflow measurement  

SciTech Connect

Lost circulation, which is the loss of well drilling fluids to the formation while drilling, is a common problem encountered while drilling geothermal wells. The rapid detection of the loss of well drilling fluids is critical to the successful and cost-effective treatment of the wellbore to stop or minimize lost circulation. Sandia National Laboratories has developed an instrument to accurately measure the outflow rate of drilling fluids while drilling. This instrument, the Rolling Float Meter, has been under development at Sandia since 1991 and is now available for utilization by interested industry users. This report documents recent Rolling Float Meter design upgrades resulting from field testing and industry input, the effects of ongoing testing and evaluation both in the laboratory and in the field, and the final design package that is available to transfer this technology to industry users.

Staller, G.E.; Westmoreland, J.J.; Whitlow, G.L.; Wright, E.K.; Glowka, D.A.

1998-03-01T23:59:59.000Z

254

Design operators  

E-Print Network (OSTI)

Design operators is a thesis that investigates the nature and characteristics of the design process by examining the interaction of computation with architectural design. The effects of the introduction of these media in ...

Dritsas, Stylianos, 1978-

2004-01-01T23:59:59.000Z

255

Business Operations  

Office of Energy Efficiency and Renewable Energy (EERE)

The Office of Business Operations is the central organization for all Office of Energy Efficiency and Renewable Energy (EERE) business products, processes, and systems. The three main offices of...

256

Operating Costs  

Directives, Delegations, and Requirements

This chapter is focused on capital costs for conventional construction and environmental restoration and waste management projects and examines operating cost estimates to verify that all elements of the project have been considered and properly estimated.

1997-03-28T23:59:59.000Z

257

An investigation of the effects of wind-induced inclination on floating wind turbine dynamics: heave plate excursion  

Science Journals Connector (OSTI)

Abstract A current trend in offshore wind is the quest for exploitation of ever deeper water sites. At depths between 50m and 100m a promising substructure is the column-stabilised semi-submersible floating type. This solution is currently being tested at full scale at the WindFloat and Fukushima Forward demonstrator sites in Portugal and Japan respectively. The semi-sub design class frequently adopts passive motion control devices based on the water entrapment principle, such as heave plates, tanks, and skirts. Whilst effective for small inclinations, these can underperform when the structure is inclined under wind loading. This study examines the alteration of potential hydrodynamics due to wind-induced trim (geometric non-linearity) and its impact on the wind turbine?s wave response with focus on heave plate performance. Firstly it is shown by using the boundary element approach that wind trim affects wave loading in the ocean wave band between 5s and 15s, and introduces hydrodynamic coupling typical of non-symmetric hulls. These features are incorporated in frequency-domain dynamic response analysis to demonstrate that said effects bear a significant impact on the turbine?s motion in waves. Accounting of heave plate excursion improves the assessment of the seaworthiness of floating wind turbine concepts, potentially leading to new design constraints.

Raffaello Antonutti; Christophe Peyrard; Lars Johanning; Atilla Incecik; David Ingram

2014-01-01T23:59:59.000Z

258

The wind-wave tunnel test of a tension-leg platform type floating offshore wind turbine  

Science Journals Connector (OSTI)

In this work a tension-leg platform (TLP) type floating offshore wind turbine (FOWT) system was proposed which was based on the National Renewable Energy Laboratory 5?MW offshore wind turbinemodel. Taking the coupled effect of dynamic response of the top wind turbine support tower structure and lower mooring system into consideration the 1/60 scale model test for investigating the coupled wind-wave effect on performance of the floating wind turbine system was done in Harbin Institute of Technology's wind tunnel and wave flume joint laboratory. In addition numerical simulations corresponding to the scale model tests have been performed by advanced numerical tools. The results of model tests and numerical simulations have a good agreement so the availability of the numerical model has been verified. Furthermore to improve the performance of the TLP system one tentative strategy adding mooring lines to the TLP system was proposed and the model test results of the two TLP systems were compared with each other. As a result the motion responses of the floating platform and the force levels of tension legs were effectively reduced by the additional mooring chains. The new TLP FOWT system might play an active and instructive role in the development of future FOWT system.

Nianxin Ren; Yugang Li; Jinping Ou

2012-01-01T23:59:59.000Z

259

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

1 campaign statistics 1 campaign statistics and plans presented by R. Granetz Alcator C-Mod quarterly review 2011/05/05 C-Mod FY2011 operation * Budgeted for 15 research run weeks (60 run days) * 14.5 research run weeks have been completed to date * 1719 plasma discharges (I p > 0.1 MA and τ pulse > 0.1 s) > 90% plasma initiation success rate * 54 different miniproposals have received run time so far, with emphasis on: * pedestal studies (FY2011 joint facility research topic, J Hughes) * characterization and optimization of I-mode (E. Marmar) * lower hybrid density limit (G. Wallace) * rotation reversal (J. Rice) * 30 full or half run days led by grad students (i.e. session leaders) 2/5 C-Mod FY2011 operation, cont. * 10 PhD students obtained the bulk of their thesis data and/or completed their research

260

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

oilgas.nd.gov oilgas.nd.gov 600 East Boulevard Ave. - Dept 405 Bismarck, ND 58505-0840 (701)328-8020 Kevin C. Connors Carbon Capture and Storage Supervisor kcconnors@nd.gov NDIC - DMR Oil and Gas Division Interstate Oil and Gas Compact Commission Plains CO 2 Reduction Partnership Task Force on Carbon Geologic Storage Phase III Project Guidance for States and Provinces On Operational and Post-Operational Liability NDIC - DMR Oil and Gas Division NDIC - DMR Oil and Gas Division 1. It is the public interest to promote geologic storage of CO 2 in order to reduce anthropogenic emissions. 2. The States pore space should be regulated and managed as a resource under the resource management philosophy as opposed to a waste disposal regulatory framework.

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Studies with the Studies with the Duke University Helicopter Observation Platform (HOP) M Adam Bolch and Roni Avissar Department of Civil and Environmental Engineering Duke University October 16, 2008 Why a helicopter? 1. Various environmental observations require low altitude, very-high frequency of sampling, and/or slow speed of sampling (e.g., aerosols, which have a key impact on climate and health; fluxes - water, carbon, others) 2. Maneuverability (complex terrain, urban areas, quick turns for flight tracks) 3. Time at station (with a fuel truck on the ground, no need to commute to an airport) 4. Remote location (e.g., operation from a ship) Why a helicopter? Federal Aviation Regulation (FAR) § 91.119 Minimum safe altitudes: General. Except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes:

262

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Project Risk Project Risk Management Lessons Learned DOE Risk Management Workshop Harry E. Peters, II, PMP Federal Project Director, Level IV & Chris Murphy Navarro Research and Engineering November 5, 2009 2 Uranium Processing Facility (UPF) * Replaces and consolidates existing enriched uranium manufacturing and processing capabilities into a single modern facility * Improves reliability, security, safety, and operational efficiency * Results in $205 million in life cycle cost savings for Y-12 once operational and protected area can be reduced * Reduces worker internal radiological exposures by 90% * Reduces Y-12's security footprint by 90% 3 Uranium Processing Facility 3 UPF Site Layout Fire water tank & pump 4 UPF HEUMF B e ar C re ek R o a d Cooling Towers Gases Facility Process

263

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

project was authorized by the Flood Control Act approved 18 project was authorized by the Flood Control Act approved 18 August 1941 (Public No. 228, 77 th Congress, 1 st Session). Construction of the access road began in April 1946. Construction of Narrows Dam started in May 1947 and the structure was essentially completed by July 1950. Commercial operation began May 1950 on Units #1 and #2. Commercial operation began September 1969 on Unit #3. The Narrow Dam is located on the Little Missouri River, a tributary of the Ouachita River near Murfreesboro in Pike County, Arkansas. It is a multi-purpose project for flood and power generation. Maximum Pool 7,260 Acres Shoreline 134 Miles Type Concrete Gravity Crest Elevation 581 Feet,msl Spillway Type Concrete, Uncontrolled Spillway Crest Elevation 563 Feet,msl Number of Units

264

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Business Management Advisory Council (BMAC) Quality Supplier Working Group (QSWG) Master Approved Suppliers List (MASL) Project Tony Cannon - QSWG Co-Lead National Security Technologies (NSTec) LLC Contractor to the U. S. Department of Energy March 16, 2011 2 The Quality Supplier Working Group (QSWG) was established in September 2009, out of the Business Management Advisory Council (BMAC). The BMAC is a National Nuclear Security Administration (NNSA) council consisting of the NNSA Chief Operating Officer (COO), Chief Operating Officers or equivalent from each M&O contractors, NNSA Senior Procurement Executive, NNSA Program and Site Office representatives. Purpose - Is to ensure improved efficiencies and economies in the Nuclear Security Enterprise (NSE) throughout all business functions.

265

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assistance to ISO's and Grid Assistance to ISO's and Grid Operators For Loads Providing Ancillary Services To Enhance Grid Reliability Brendan Kirby - ORNL Chuck Goldman - LBNL Michael Kintner-Meyer - PNNL October 2006 Washington, D.C. OE Visualization and Controls Peer Review Programmatic Goal Load As a Resource : One of four program areas within the Office of Electricity's Transmission Reliability Program: - "This activity evaluates the capability of load to respond to price signals to improve grid reliability and market efficiency." This work includes the "Potential of load to provide ancillary services." Project demonstrates and promotes the use of responsive load to provide ancillary services; helps ISOs and grid operators understand the resource and how best to apply it.

266

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Administration FAA Air Traffic Organization Presented to: Department of Energy Presented by: Mark DeNicuolo, Manager, Performance & Analyses, FAA ATO Safety and Technical Training Date: September 20, 2012 Safety Management 2 * Approximately 50,000 flights per day * En Route centers handle 40.5 million aircraft per year * FAA/contract towers handle: - 51.2 million airport operations - 39 million instrument operations * 732 million passenger enplanements * Over 5,000 civil, public-use airports * Approximately 33,300 ATO employees - More than 15,000 air traffic controllers - More than 7,000 technicians and engineers * 21 ARTCCs, 513 ATCTs, 17 FSSs, 3 AFSSs National Airspace System (NAS) 3 Discipline Domains En Route Terminal FSS Support NDP Totals

267

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Conard Stair Conard Stair Enforcement Program Manager B&W Y-12 March 2012 Enforcement Coordination Working Group Spring 2012 Meeting Y-12 Approach to Enforcement Y-12 Enforcement Program Office (EPO) * Integrated program with a single point of contact for enforcement activities for radiological protection, worker safety and health, and classified information security * Proceduralized and automated process that provides consistent documentation of compliance determinations and reporting * Uses a decentralized approach with Line Management Price- Anderson Officers (LMPOs) assisted by a cadre of subject matter experts to perform screening determinations * Provides policy, direction, guidance, and independent oversight * Serves as chief technical advisor to senior leadership team on

268

Solar radiation effects on evaporative losses of floating roof storage tanks  

Science Journals Connector (OSTI)

There are 40 storage tanks in the Khark Island for storing crude oil. Considering the hot summers of the island, light hydrocarbons vaporise and vented to the atmosphere. This process causes environmental pollution and also affects the quality of the crude oil besides the economic detriment. Therefore, crude oil evaporation loss associated with the storage tank is an important issue which should be carefully investigated to identify the potential means of its reduction. The aim of the present work is to determine the evaporative losses from external floating storage tanks and to study the absorptivity effects of their exterior surface paint on the losses due to the solar irradiation. The API standards along with the thermal analysis of the tank have been employed to evaluate the tank temperature variations and the evaporative losses of a typical tank based on the actual ambient conditions of the Khark Island. The results show that the paints with low absorptivity can reduce the evaporative losses significantly. Furthermore, experimental data has been provided to validate the calculated tank temperature variations, and reasonable agreements have been found. [Received: April 10, 2010; Accepted: May 31, 2010

Mahmood Farzaneh-Gord; Amin Nabati; Hamid Niazmand

2011-01-01T23:59:59.000Z

269

Ultimate and accidental limit state design for mooring systems of floating offshore wind turbines  

Science Journals Connector (OSTI)

Abstract The paper deals with the catenary mooring system design for tri-floater floating offshore wind turbines. Both ultimate (ULS) and accidental (ALS) limit states are examined, under 50 and 1 year return period environmental loads. Both power production and parked wind turbine conditions are analysed; for the former the ULS is applied, for the latter both ULS and ALS are considered. The platform static demand is assessed in terms of turbine thrust, wind, current and wave steady drift forces. The dynamic offset is determined considering both wave and low-frequency motions. Mooring patterns with 6, 9 and 12 chain cable and steel wire rope lines are considered. Water depth incidence is examined in the range between 50 and 300m and the mooring system is dimensioned so that the relevant weight is determined. The Dutch tri-floater is assumed as reference structure and three candidate sites in the Southern Mediterranean Sea are considered. It is found that platform admissible offset and line pattern significantly influence the mooring system weight; obtained results show that 9 and 12 line configurations are the necessary choice and the mooring line weight is independent of water depth between 100 and 200m, while increases out of this range.

G. Benassai; A. Campanile; V. Piscopo; A. Scamardella

2014-01-01T23:59:59.000Z

270

EIS-0349: Cherry Point Co-generation Project  

Energy.gov (U.S. Department of Energy (DOE))

This EIS analyzes DOE's decision to support BP West Coast Products, LLC proposal to construct and operate a 720-megawatt, natural-gas-fired, combined-cycle cogeneration facility on land adjacent to its BP Cherry Point Refinery.

271

SharePoint 2010 Overview  

Science Journals Connector (OSTI)

Hello and welcome to SharePoint 2010. Microsoft SharePoint has journeyed a long way since the early days of 2001 and SharePoint Portal Server 2003. SharePoint administrators and developers jumped for joy in 20...

Robert Garrett

2011-01-01T23:59:59.000Z

272

BOREAS Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Study Area Operations/Thompson Airport (NSA-Ops) Study Area Operations/Thompson Airport (NSA-Ops) NSA Operations (NSA-Ops) The Keewatin Air Hanger: site of BOREAS Ops 1994 Dr. Piers Sellers working in Ops, 1994 BOREAS "Air Force" The NASA C-130 The University of Wyoming King Air The NASA Helicopter The NRC Twin Otter The NCAR Electra The Ontario Chieftain Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help |

273

SSA Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Area Operations (SSA-Ops) Area Operations (SSA-Ops) "BOREAS Ops" was located at the Snodrifters Lodge, in Candle Lake, Saskatchewan. Radiosonde balloon launch at Ops The NASA Helicopter lands at Ops A meeting at the Snodrifter's Lodge Release of a radiosonde at the SSA operations center in Candle Lake. Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help | User Services - Tel: +1 (865) 241-3952 or E-mail: uso@daac.ornl.gov

274

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Rule Rule Implementation: Class VI Permitting and GHG Reporting Mary Rose (Molly) Bayer U.S. Environmental Protection Agency Office of Ground Water and Drinking Water August 21, 2013 1 2 Evaluation of existing statutes and regulatory frameworks Class VI Rule Implementation Ten Years Class VI Rule Background Considerations for GS * Large Volumes * Buoyancy * Viscosity (Mobility) * Corrosivity UIC Program Elements * Site Characterization * Area of Review (AoR) * Well Construction * Well Operation * Site Monitoring * Post-Injection Site Care * Public Participation * Financial Responsibility * Site Closure 3 New well class established: Class VI * Finalized (2012-2013): - Site Characterization - Area of Review Evaluation and Corrective Action - Testing and Monitoring

275

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Dept of Homeland Security Dept of Homeland Security Office for Domestic Preparedness Training Marci Larson Branch Chief - Central Division 2 ODP Training Overview ODP Training Overview ODP provides comprehensive training and technical assistance to prevent, deter, respond to and recover from threats and incidents of terrorism. ODP provides funding through formula grants to institutionalize terrorism training at the state and local levels. 3 Training Program Training Program Comprehensive Training Curriculum 40+ courses delivered at no cost to federal, state, and local emergency responders Course design, development and delivery reflect current training needs at the state level 4 ODP Training Courses ODP Training Courses Levels of Training - Awareness - Performance (Operations and Technician)

276

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Model Based Optimal Sensor Network Design for Model Based Optimal Sensor Network Design for Condition Monitoring in an IGCC Plant GE -Global Research Niskayuna, NY March 16, 2011 Aditya Kumar DOE Program Manager: Susan Maley DOE Contract # DE-FE0005712 2 Optimal Sensor Placement for Condition Monitoring * Develop Systematic model based computational approach for OSP * Computer simulation demonstration on gasifier and RSC - key process units in gasification section with very harsh environment 3-5% 3 Introduction Combined Cycle * Firing temperature * Stresses IGCC * Gasifier T * Carbon Conv * Refractory wear Wind Turbine * Stresses * Aerodynamic Thrust Advanced controls - * Pushing the envelope of operation and performance "Lean" Sensor set- * Harsh environment,

277

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FAULT VISUALIZATION FAULT VISUALIZATION FAULT VISUALIZATION Integration of Substation IED Integration of Substation IED Information into EMS Functionality Information into EMS Functionality Washington DC, Washington DC, October 2006 October 2006 OE Visualization and Controls Peer Review Outline Outline Programmatic Goals Programmatic Goals Background Background Existing Approach Existing Approach New approach New approach Benefits Benefits Conclusions Conclusions 2 Programmatic Goals Programmatic Goals Electric T&D Programs: a) Expansion of Monitoring and Control capabilities using GPS, b) Deployment of time-synchronized measurements c) Development of improved fault location d) Improvement of operator tools for detecting physical disturbances OED&E, Transmission Reliability Program:

278

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy Department of Energy Department of Energy Environmental Management Environmental Management Transportation Transportation Update Update Dennis Ashworth Dennis Ashworth Director, EM Office of Transportation Director, EM Office of Transportation 2 2 Environmental Management Office of Transportation Protecting the Public and the Environment in all aspects of our Transportation Operations Transportation, Logistics and Waste Disposition are Transportation, Logistics and Waste Disposition are Key Contributors to the EM Project Key Contributors to the EM Project Ensuring disposition paths are identified for Ensuring disposition paths are identified for all EM waste and materials all EM waste and materials Providing and coordinating disposition Providing and coordinating disposition

279

Symmetry and Dirac points in graphene spectrum  

E-Print Network (OSTI)

Existence and stability of Dirac points in the dispersion relation of operators periodic with respect to the hexagonal lattice is investigated for different sets of additional symmetries. The following symmetries are considered: rotation by $2\\pi/3$ and inversion, rotation by $2\\pi/3$ and horizontal reflection, inversion or reflection with weakly broken rotation symmetry, and the case where no Dirac points arise: rotation by $2\\pi/3$ and vertical reflection. All proofs are based on symmetry considerations and are elementary in nature. In particular, existence of degeneracies in the spectrum is proved by a transplantation argument (which is deduced from the (co)representation of the relevant symmetry group). The conical shape of the dispersion relation is obtained from its invariance under rotation by $2\\pi/3$. Persistence of conical points when the rotation symmetry is weakly broken is proved using a geometric phase in one case and parity of the eigenfunctions in the other.

Gregory Berkolaiko; Andrew Comech

2014-12-28T23:59:59.000Z

280

Phase-shifting point diffraction interferometer  

DOE Patents (OSTI)

Disclosed is a point diffraction interferometer for evaluating the quality of a test optic. In operation, the point diffraction interferometer includes a source of radiation, the test optic, a beam divider, a reference wave pinhole located at an image plane downstream from the test optic, and a detector for detecting an interference pattern produced between a reference wave emitted by the pinhole and a test wave emitted from the test optic. The beam divider produces separate reference and test beams which focus at different laterally separated positions on the image plane. The reference wave pinhole is placed at a region of high intensity (e.g., the focal point) for the reference beam. This allows reference wave to be produced at a relatively high intensity. Also, the beam divider may include elements for phase shifting one or both of the reference and test beams. 8 figs.

Medecki, H.

1998-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Realities of Chiller Plant Operation: Utility Impacts on Owner Operating  

NLE Websites -- All DOE Office Websites (Extended Search)

Realities of Chiller Plant Operation: Utility Impacts on Owner Operating Realities of Chiller Plant Operation: Utility Impacts on Owner Operating Costs and Societal Environmental Issues Speaker(s): Don Aumann Date: March 21, 2000 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Satkartar K. Kinney Don Aumann, a Senior Consultant from BKi in Oakland, will present an overview of two projects he completed for the electric utility industry. The first, a case study evaluation of a hybrid chiller plant in Jefferson City, Missouri, demonstrates the importance of carefully evaluating the impact of utility rate structures on plant operating costs. The building owner, another engineering consultant, and the local utility representatives were confused by the rates and missed an opportunity to cut chiller-plant operating costs by about 20%, totaling $15,000 per year. In

282

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Customer Acceptance of Smart Grid Customer Acceptance of Smart Grid DOE Energy Advisory Committee Meeting June 6, 2013 Judith Schwartz, To the Point + INNOVATORS EARLY ADOPTERS EARLY MAJORITY LATE MAJORITY LATE ADOPTERS Indifferents Tech Enthusiasts Green Altruists Comfort Lovers Cost Conscious Doubters Green buildings Simple feedback interface Price incentives Seamless automation Who Are Our Customers? + Why Will They Care About SG? 1. Information, incentives, and automation to easily reduce or defer electricity use 2. Integrate clean generation and transportation 3. Reduce, pinpoint, and restore outages + Fly Under the Radar Active Engagement Slow Build Back end deployment first in sequence AMI rollout in process or pilots are imminent Practice incremental modernization efforts High % of "indifferent"

283

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

John Nangle, National Renewable Energy Laboratory (NREL) John Nangle, National Renewable Energy Laboratory (NREL) Tribal Leader Forum, Phoenix, AZ - May 30 - 31, 2013 State Incentives and Project Impacts Main Points - Market Context * State Renewable Portfolio Standards (RPS) - What are they? - How can they help your project? - Potential gap means more market demand for RE projects Starting a Renewable Energy Project * What renewable resources exist? * What sites with resources do you own? * To whom will you sell the electricity? * How will federal and state incentives or policies impact your project? * Access to transmission * Other policies - Interconnection standards - Environmental standards Renewable Portfolio Standard (RPS) * A requirement set by a state for utilities to generate x% of electricity from renewables by a specific date

284

Repelling Point Bosons  

SciTech Connect

There is a body of conventional wisdom that holds that a solvable quantum problem, by virtue of its solvability, is pathological and thus irrelevant. It has been difficult to refute this view owing to the paucity of theoretical constructs and experimental results. Recent experiments involving equivalent ions trapped in a spatial conformation of extreme anisotropic confinement (longitudinal extension tens, hundreds or even thousands of times transverse extension) have modified the view of relevancy, and it is now possible to consider systems previously thought pathological, in particular point Bosons that repel in one dimension. It has been difficult for the experimentalists to utilize existing theory, mainly due to long-standing theoretical misunderstanding of the relevance of the permutation group, in particular the non-commutativity of translations (periodicity) and transpositions (permutation). This misunderstanding is most easily rectified in the case of repelling Bosons.

McGuire, J. B. [Department of Physics, Florida Atlantic Univ., Boca Raton, FL (United States)

2011-12-01T23:59:59.000Z

285

Promoting a level playing field for energy options: electricity alternatives and the case of the Indian Point Energy Center  

Science Journals Connector (OSTI)

The Indian Point Energy Center, with two operational nuclear reactors ... the 2,000MW of power provided by Indian Point. This paper assesses the potential for electricity alternatives in the Indian Point service...

Marilyn A. Brown; Benjamin K. Sovacool

2008-02-01T23:59:59.000Z

286

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Kansas City, Missouri Kansas City, Missouri June 7-8, 2006 Southwestern Power Administration Drought Operations Guides * Non-Hydro Guide Curve * Inflow trends * Drought Indices * Storage Remaining * Long-term weather forecasts * Season of the year * Price of power * Daily & weekly loads * Other Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec End-of-Month 0 20 40 60 80 100 120 Energy-in-Storage, % Non-Hydro Guide Curve Flood Operations Hydro Hydro + Non-Hydro 17-Reservoir System Gain in Capacity with Increased Head 0 50 100 150 200 250 300 0 10 20 30 40 50 60 70 80 90 100 Energy-in-Storage, % C a p a c it y , M W Interconnected System Energy-In-Storage (EIS) 40 50 60 70 80 90 100 110 120 130 140 P e r c e n t f u ll E IS ( % ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

287

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U N C L A S S I F I E D ROUGH DRAFT FOR DISCUSSION PURPOSE ONLY) U N C L A S S I F I E D ROUGH DRAFT FOR DISCUSSION PURPOSE ONLY) Operated by the Los Alamos National Security, LLC for the DOE/NNSA (U N C L A S S I F I E D) Ultra-Deepwater Advisory Committee (UDAC) Risk Assessment Technical Support Dasari V. Rao, Division Leader, Decision Applications Division Chris Smith and Elena Melchert, DOE Program Oversight Risk Informed Decision Support for UDW Drilling U N C L A S S I F I E D U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA LA-UR-12-22457 * Over the past three decades there has been a steady decrease in 'major' kick frequency; more recently, frequency is about 1 in 10 wells. A majority of the kicks occur in the shallower regions where the primary hazard is the release of natural gas, some condensates

288

END POINTS MANAGEMENT End Points Management The Need for End Point Specifications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

MANAGEMENT MANAGEMENT End Points Management The Need for End Point Specifications The Need for a Method to Derive End Points Guiding Principles for Specifying End Points Tailored Approach Headquarters, Field Office, and Contractor Roles End Points Approvals Contractor Organization Functions for End Points Implementation Training and Walkdown Guidance for the Facility Engineers The Need for End Point Specifications The policy of the EM is that a formal project management approach be used for the planning, managing, and conducting of its projects. A fundamental premise of project management for facility deactivation is answering the question: How do you know when the project is complete? Just as the design specifications are essential to a

289

Substation Operation  

Science Journals Connector (OSTI)

... THIS book is intended to help the workman to understand the principles of substation operation. It is a good attempt at giving somewhat advanced technical knowledge in such ... ." We are told not to use water to put out a fire at a substation before the station has been made completely " dead." The reason given for this ...

1925-08-01T23:59:59.000Z

290

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Encourage greater use of ARM data by the Encourage greater use of ARM data by the modeling community * Create highly-polished datasets useful to modelers (e.g., Climate Modeling Best Estimate Product (CMBE) - http://www.arm.gov/data/showcase.stm) * Possible future availability of statistical summaries for all standard ARM products (plots and/or datasets) * Possible future 'on the fly' calculation of statistical quantities, integrated into ARM archive interface The Purpose The Purpose *Oak Ridge National Laboratory is operated by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725 The Atmospheric Radiation Measurement (ARM) Program has been compiling a collection of cloud and radiation observations over the past 10-14 years. This DOE-sponsored program provides climate modelers

291

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Tritium at Fermilab Tritium at Fermilab Fermilab Community Advisory Board September 23, 2010 Rob Plunkett, Fermilab 2 Got water? Robert Plunkett Fermilab has plenty Robert Plunkett 3 The Fermilab site has numerous ponds and is the origin of Indian Creek and Ferry Creek. Fermilab uses water to cool accelerators and other equipment. 4 Fermilab, before Nov. 2005 Tritium is produced as part of accelerator operations. It had never been detected in Fermilab surface water before Nov. 2005. Robert Plunkett 5 Nov. 2005: Tritium detected Our routine testing of surface water at Fermilab revealed low levels of tritium: 3-4 picocuries per milliliter Surface water limit: 2000 pCi/ml Drinking water limit: 20 pCi/ml Detection limit: 1 pCi/ml Robert Plunkett 6 Indian Creek in Dec. 2005 At the same time, we also detected

292

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2008 2008 1 Jim Eyer - Distributed Utility Associates, Inc. 17 Electric Utility-Related Electricity Storage Benefits, Featuring T&D Deferral DOE Peer Review September 2008 - Washington D.C. by Distributed Utility Associates, Inc. Jim Eyer, Senior Analyst jim@dua1.com This project is part of the Energy Storage Collaboration between the California Energy Commission (CEC) and the Energy Storage Systems Program of the U.S. Department of Energy (DOE/ESS) and managed by Sandia National Laboratories (SNL). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration, under contract DE-AC04-94AL85000. Funding: Congressional ear-mark. DOE Peer Review 2008

293

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recalibration Methodology for Transmitters and Recalibration Methodology for Transmitters and Instrumentation Pradeep Ramuhalli Pacific Northwest National Laboratory May 21-22, 2013 2 Project Overview  Goal: Develop and evaluate a standardized framework for next- generation online monitoring applicable to current and future nuclear systems  Participants: PNNL (Pradeep Ramuhalli, Jamie Coble, Guang Lin, Brett Braatz) AMS (Brent Shumaker)  Research directly supports primary goals of LWRS, SMR, ARC, NGNP, and MPACT  Supports secondary goals of AF and UNFD 3 Project Background  Measurement reliability key to safe, economic and secure operation of nuclear systems Interval-based recalibration used to assure reliability  Current practices have several drawbacks Time consuming and expensive

294

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Porting, Scaling, and Porting, Scaling, and Optimization Best Practices Jeff Larkin COMPILING December 09 Slide 2 Try every compiler available to you, there"s no "best" PGI, Cray, Pathscale, Intel, GCC are all available, but not necessarily on all machines Each compiler favors certain optimizations, which may benefit applications differently Test your answers carefully Order of operation may not be the same between compilers or even compiler versions You may have to decide whether speed or precision is more important to you Choosing a Compiler December 09 Slide 3 PGI -fast -Mipa=fast man pgf90; man pgcc; man pgCC Cray man crayftn; man craycc ; man crayCC Pathscale

295

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Alcator Alcator C-Mod quarterly review 26 July 2010 C-Mod FY2010 operation * Budgeted for 18 research run weeks (72 run days) * 5 weeks ARRA funded * 13 weeks base funded * 15.9 research run weeks have already been completed to date (through 23 July) * ~2350 plasma discharges * ~50 different miniproposals received run time, with major emphasis on: * boundary layer heat transport (joint facility milestone) * lower hybrid (new launcher) * characterization and optimization of I-mode * optimization of mode conversion flow drive C-Mod FY2010 run utilization to date (through 23 July) Topic/Group Run Days ----------- ------------ LH 2.34 H-mode Scenarios 3.50 MHD 2.03 Boundary 14.16

296

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Tribble-II Sub-Panel Tribble-II Sub-Panel Meeting Sam Aronson, Lab Director September 7, 2012 2 BNL Overall Strategy Vision  Premier multidisciplinary, basic S&T Laboratory * Advance energy and environment-related research to the benefit of the Nation * Advance fundamental research in nuclear and particle physics  Growing impact through development and commercialization of discoveries Strategy  Position BNL's two largest facilities National Synchrotron Light Source (NSLS → NSLS-II) and Relativistic Heavy Ion Collider (RHIC → RHIC-II → eRHIC) for continued leadership roles Funding  FY11 Lab operating costs $652M * ~85% of funding from SC * Growth strategy for non-SC funding going forward 3 BNL Overall Strategy: Capabilities &

297

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Presentation Presentation * CAES Aquifer Technology * Geological Framework of Iowa * Dallas Center Structure * Results of CAES Feasibility Simulation * ISEP CAES Development Plan How Does CAES Work? CAES Turbo-Machinery Operating Requirements Equipment Manufacturer Plant Size (MW) Min. Inlet Pressure (psi) Min. Flow Rate (lbs/MW/hr) Total Min. Flow Rate (lb/hr) Allison 15 200 9500 142,500 MAN Turbo 50 50 9500 475,000 Dresser Rand 134 830 9500 1,273,000 Alston 300 900 9500 2,850,000 Westinghouse (501D5) 350 750 9500 3,325,000 Westinghouse (501F) 450 750 9500 3,275,000 Earth Storage System Designs All based on the concept of multiple geologic and hydrologic barriers. DESIGN CRITERIA * Capacity: 5 to 10 BCF Total Vessel Volume * Integrity of Vessel: <4% of Volume over a year * Fluid Deliverability - 400#/sec = 464 MMscfd

298

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carbon-Enhanced VRLA Batteries Carbon-Enhanced VRLA Batteries David G. Enos, Tom Hund Sandia National Laboratories Albuquerque, NM Rod Shane East Penn Manufacturing Lyon Station, PA DOE Energy Storage Systems Research Program Annual Peer Review Funded by the Energy Storage Systems Program of the U.S. Department Of Energy (DOE/ESS) through Sandia National Laboratories (SNL) November 2 - 4, 2010 Washington, DC Sandia National Laboratories is a multiprogram laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. Introduction  The addition of certain forms of carbon to the negative plate in valve regulated lead acid

299

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fast Demand Response with Fast Demand Response with Residential and Light Commercial Loads Duncan Callaway, Mark Dyson, Joe Eto, Sila Kiliccote, Jason MacDonald CFY12 CERTS / DOE Internal Program Review Sept 20 2012 Basic question Can smaller loads (residential, light commercial) be profitably engaged in ancillary services? Water Heating 6% Space Heating 10% Ventilation 3% Cooking 1% Cooling 20% Refrigeration 13% Lighting 15% Other, non- thermal 24% Office Equipment 8% Annual electric energy consumption for residential and light commercial loads in the US (Source: EIA) Aggregating small loads: System operator perspective * Benefit: continuous and fast response - Enables higher performance for regulation or load following services * Benefit: Many small loads availability more certain than few larger loads

300

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

September 29 - 30, 2008 September 29 - 30, 2008 Marcelo Schupbach, Ph.D. Chief Technical Officer APEI, Inc. 535 Research Center Blvd. Fayetteville, AR 72701 Phone: (479)-443-5759 Email: mschupb@apei.net Website: www.apei.net High Power Density Silicon Carbide Power Electronic Converters Funded by the Energy Storage Systems Program of the U.S. Department Of Energy (DOE/ESS) through the Small Business Innovation Research (SBIR) program and managed by Sandia National Laboratories (SNL). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration, under contract DE-AC04-94AL85000 Energy Storage Systems Program 2 Overview * Broader Impact of SiC-based Power Converter

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Alcator C-Mod quarterly review Alcator C-Mod quarterly review 06 April 2010 C-Mod FY2010 operation * Budgeted for 18 research run weeks (72 run days) - 5 weeks ARRA funded - 13 weeks base funded * 14.7 research run weeks have already been completed to date * ~1650 plasma discharges * 43 different miniproposals received run time, with major emphasis on: - boundary layer heat transport in H-mode (joint facility milestone) - characterization and optimization of I-mode - optimization of mode conversion flow drive C-Mod FY2010 run utilization to date (in run days) Topic/Group Run Days ----------- ------------ H-mode Scenarios 3.50 MHD 2.03 Boundary 11.66 Transport 23.48 AT Scenarios 0.88

302

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bus Bus NaS Battery Energy Storage Project U.S. DOE Peer Review Seattle, WA October 8, 2009 Steve Eckroad Electric Power Research Institute Seckroad@epri.com (704) 595-2717 2 © 2009 Electric Power Research Institute, Inc. All rights reserved. Acknowledgements This project is part of the joint energy storage initiative between the New York State Energy Research and Development Agency (NYSERDA) and the Energy Storage Systems Program of the U.S. Department of Energy (DOE/ESS) and managed by Sandia National Laboratories (SNL). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC84-94AL85000. * US DOE and NYSERDA - Imre Gyuk and Joe Sayer

303

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

06 06 1 US Army Corps US Army Corps of Engineers of Engineers ® ® Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab Southwestern Southwestern Regional Hydropower Regional Hydropower Conference Conference 7 June 2006 7 June 2006 Update Update 6/27/2006 2 US Army Corps US Army Corps of Engineers of Engineers ® ® Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab 6/27/2006 3 US Army Corps US Army Corps of Engineers of Engineers ® ® Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab * Situation - One unit not operational with a cracked shaft. One unit near failure with a deteriorated stub shaft bearing and one unit near failure with a

304

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Utility-Scale Solar 2012 Utility-Scale Solar 2012 An Empirical Analysis of Project Cost, Performance, and Pricing Trends in the United States Mark Bolinger & Samantha Weaver Lawrence Berkeley National Laboratory September 2013 1 This research was supported by funding from the U.S. Department of Energy's SunShot Initiative. Presentation Outline * Recent market growth has resulted in a critical mass of project-level data ripe for analysis * Key findings from this inaugural edition  Installed Costs/Prices  Operating (O&M) Costs  Performance (Capacity Factors)  Power Purchase Agreement ("PPA") Prices 2 A few background notes about this first edition: * Certain data (e.g., O&M costs) were still rather limited for this first edition, but are

305

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

14, 2010 14, 2010 Corrector Designs for Superconducting Solenoid for e-lens Ramesh Gupta April 13, 2010 Ramesh Gupta, April 14, 2010 Design Considerations for e-lens correctors * Short correctors must create a dipole field of 0.02 T and long correctors 0.006+ T (both horizontal and vertical) * Should have low operating current to minimize heat load (more important for tests when RHIC cryo-system is not on) * Should have a minimum layers to minimize schedule and cost Ramesh Gupta, April 14, 2010 Goals - Desired and Possible * Last Week's Desired Goal: - One single layer coil to do the job for each of horizontal corrector and vertical correctors (one each for short length and long length correctors) * It will be shown that we can do that. * In fact, with the designs proposed here, we should be able to do even better.

306

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Nanostructured Electrode and Electrolyte Nanostructured Electrode and Electrolyte Development for Energy Storage Devices Presented by Karen Waldrip Sandia National Laboratories Albuquerque, NM Funded by the Energy Storage Systems Program of the U.S. Department Of Energy (DOE/ESS) and by the Small Business Innovation Research (SBIR) program, and managed by Sandia National Laboratories (SNL). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration, under contract DE-AC04-94AL85000. - SNL, GINER, and ADA - Electrochemical Storage Program Reviews - Capacitor Development Activities D. Ingersoll, F.M. Delnick, and K.E. Waldrip Sandia National Laboratories PO Box 5800 Albuquerque, NM 87185-0614

307

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TEC Rail Topic Group TEC Rail Topic Group Update Update Transportation External Coordination Meeting April 21-23, 2004 Steven Hamp Acting Director, National Transportation Program (EM) Rail Topic Group Charter: To Identify and Discuss Current Issues and Concerns Regarding Rail Transportation of Radioactive Materials by the Department of Energy. First Established in 1997 and Operated Until 1999 Re-formed Topic Group in 2002 Rail Topic Group Efforts: *Review Earlier Reports Completed by the Topic Group *Identify Rail Issues of Interest *Prepare Summary of the Rail Topic Group Report - "Transportation Safety WIPP-PIG Rail Comparison" *Circulate Annotated Bibliography of Rail Transport of Radioactive Material *Prepare Draft Issue Paper on Rail Route Selection Rail Topic Group Timeline Since Being Reactivated:

308

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

PUMP CANYON TEST SITE PUMP CANYON TEST SITE Prepared For: 2009 Regional Carbon Sequestration Partnerships Annual Review Meeting Prepared By: George J. Koperna, Jr. Advanced Resources International, Inc. Pittsburgh, November 16-19, 2009 1 1 2 RCSP SP111709 Presentation Outline * Introduction * Operations * Reservoir Characterization and Modeling * Monitoring, Verification and Accounting * Next Steps 3 RCSP SP111709 Objectives * Field-test the effectiveness of CO 2 sequestration in deep, unmineable coal seams via a small-scale geologic sequestration demonstration * Develop a better understanding of the efficacy of enhanced coalbed methane recovery processes via carbon dioxide injection (CO 2 -ECBM) into a pressure-depleted reservoir * Monitor plume migration to prevent any leakage 4 RCSP SP111709

309

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ingersoll, F.M. Delnick, and K.E. Waldrip Ingersoll, F.M. Delnick, and K.E. Waldrip Sandia National Laboratories PO Box 5800 Albuquerque, NM 87185-0614 High Voltage Electrochemical Capacitor presented at EESAT 2007 September 23-27, 2007 PEER Review San Francisco, CA Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. 2 Objective * New Start - 7/07 * Increasing the energy of the system * Energy = 1/2 CV 2 * Four general means to increasing energy - Increased surface area - most common approach * A - active area of electrode - high surface area materials (carbon - typically > 1000 m 2 /g) - nanomaterials (e.g. carbon multiwalled nanotube) - Employ Faradaic processes -

310

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NATIONAL CHAIRS MEETING NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 U.S. Department of Energy Practices Related to Public Input Presented by Greg Simonton Federal Coordinator Portsmouth SSAB EM SSAB NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 DOE Appreciation  The Department recognizes the members of the Site Specific Advisory Boards and Citizens Advisory Boards are volunteers and dedicate a lot of time to this work.  The Department also recognizes that members are asked to weigh in on complex and sometimes controversial issues that can have dramatic impacts on their communities.  The Department acknowledges that careful thought goes into recommendations and other input and that members bring a vital perspective to DOE operations.

311

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FACTS Control for Long- and Short- FACTS Control for Long- and Short- Term Energy Storage Mehdi Ferdowsi Missouri University of Science and Technology Funded by the Energy Storage Systems Program of the U.S. Department Of Energy (DOE/ESS) through Sandia National Laboratories (SNL). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration, under contract DE-AC04-94AL85000. Issues * Short- and Long-Term Energy Storage * Storage Integration * Cyber Security 33 v v Transmission Line Generation FACTS Wind Power Energy Storage Solar Power Energy Storage FACTS Device Distributed Decisions Power Electronics Communications Sensing and monitoring Inputs Power Electronics

312

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Area: Resource Adequacy Area: Resource Adequacy Reliability and Markets: Project 3A Long-term Planning and Investment for Transmission and Generation Tim Mount, Cornell University Fernando Alvarado, U. of Wisconsin 18 October 2006 Arlington, VA OE Visualization and Controls Peer Review Page 2 2 OUTLINE Maintaining Generation Adequacy Missing Money and Capacity Markets. Co-Optimization in Markets for Energy and Reserves. Testing the Forward Capacity Market in New England. Economic Cost of Congestion Increasing Transmission Congestion due to Voltage. Modeling the Financial Risk of Spatial Price Differences. New Responsibilities for FERC in EPAct05. Summary and Outreach to Stakeholders Publications Collaboration with System Operators Next steps Page 3 3 Source: "2005 NERC Long-Term Reliability Assessment", Fig. 4

313

St Andrews Recycling Points Recycling Points are situated locally to  

E-Print Network (OSTI)

St Andrews Recycling Points Recycling Points are situated locally to allow you to recycle the following materials: To find your nearest Recycling Point please visit www.fifedirect.org.uk/wasteaware or call the Recycling Helpline on 08451 55 00 22. R&A GOLF CLUB OLD COURSE HOTEL UNIVERSITY NORTH HAUGH

St Andrews, University of

314

NNSA Points of Contact | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Points of Contact | National Nuclear Security Administration Points of Contact | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration NNSA Points of Contact Home > About Us > Our Operations > Acquisition and Project Management > Major Contract Solicitations > Environmental Program Services Contract >

315

Operation Poorman  

SciTech Connect

The objectives of Operation Poorman were to design and build a portable seismic system and to set up and use this system in a cold-weather environment. The equipment design uses current technology to achieve a low-power, lightweight system that is configured into three modules. The system was deployed in Alaska during wintertime, and the results provide a basis for specifying a mission-ready seismic verification system.

Pruvost, N.; Tsitouras, J.

1981-03-18T23:59:59.000Z

316

Group Response System Turning Point  

E-Print Network (OSTI)

. · But more often I do use it within a slide show. Somewhat more difficult to manage. But some great uses-Add-in for Power Point. · Some "Clicking" practice. #12;Make A Slide-Add to this file. · Esc, click on TurningPoint add-in · Pick Insert Slide in Turning Point bar and insert a Turning Point slide after this slide

317

Superconductor-normal-superconductor with distributed Sharvin point contacts  

DOE Patents (OSTI)

A non-linear superconducting junction device comprising a layer of high transient temperature superconducting material which is superconducting at an operating temperature, a layer of metal in contact with the layer of high temperature superconducting material and which remains non-superconducting at the operating temperature, and a metal material which is superconducting at the operating temperature and which forms distributed Sharvin point contacts with the metal layer.

Holcomb, Matthew J. (San Mateo County, CA); Little, William A. (Santa Clara County, CA)

1994-01-01T23:59:59.000Z

318

High Performance Computing Facility Operational Assessment, FY 2010 Oak Ridge Leadership Computing Facility  

SciTech Connect

Oak Ridge National Laboratory's (ORNL's) Cray XT5 supercomputer, Jaguar, kicked off the era of petascale scientific computing in 2008 with applications that sustained more than a thousand trillion floating point calculations per second - or 1 petaflop. Jaguar continues to grow even more powerful as it helps researchers broaden the boundaries of knowledge in virtually every domain of computational science, including weather and climate, nuclear energy, geosciences, combustion, bioenergy, fusion, and materials science. Their insights promise to broaden our knowledge in areas that are vitally important to the Department of Energy (DOE) and the nation as a whole, particularly energy assurance and climate change. The science of the 21st century, however, will demand further revolutions in computing, supercomputers capable of a million trillion calculations a second - 1 exaflop - and beyond. These systems will allow investigators to continue attacking global challenges through modeling and simulation and to unravel longstanding scientific questions. Creating such systems will also require new approaches to daunting challenges. High-performance systems of the future will need to be codesigned for scientific and engineering applications with best-in-class communications networks and data-management infrastructures and teams of skilled researchers able to take full advantage of these new resources. The Oak Ridge Leadership Computing Facility (OLCF) provides the nation's most powerful open resource for capability computing, with a sustainable path that will maintain and extend national leadership for DOE's Office of Science (SC). The OLCF has engaged a world-class team to support petascale science and to take a dramatic step forward, fielding new capabilities for high-end science. This report highlights the successful delivery and operation of a petascale system and shows how the OLCF fosters application development teams, developing cutting-edge tools and resources for next-generation systems.

Bland, Arthur S Buddy [ORNL; Hack, James J [ORNL; Baker, Ann E [ORNL; Barker, Ashley D [ORNL; Boudwin, Kathlyn J. [ORNL; Kendall, Ricky A [ORNL; Messer, Bronson [ORNL; Rogers, James H [ORNL; Shipman, Galen M [ORNL; White, Julia C [ORNL

2010-08-01T23:59:59.000Z

319

Coupled fluid-structure interaction simulation of floating offshore wind turbines and waves: a large eddy simulation approach  

Science Journals Connector (OSTI)

We develop a computational framework for simulating the coupled interaction of complex floating structures with large-scale ocean waves and atmospheric turbulent winds. The near-field approach features a partitioned fluid-structure interaction model (FSI) combining the curvilinear immersed boundary (CURVIB) method of Borazjani and Sotiropoulos (J. Comput. Phys. 2008) and the two-phase flow level set formulation of Kang and Sotiropoulos (Adv. in Water Res. 2012) and is capable of solving complex free-surface flows interacting non-linearly with complex real life floating structures. The near-field solver is coupled with a large-scale wave and wind model based on the two-fluid approach of Yang and Shen (J. Comput. Phys. 2011) which integrates a viscous Navier-Stokes solver with undulatory boundaries for the motion of the air and an efficient potential-flow based wave solver. The large-scale turbulent wind is incorporated from the far-field solver to the near-field solver by feeding into the latter inlet boundary conditions. The wave field is incorporated to the near-field solver by using the pressure-forcing method of Guo and Shen (J. Comput. Phys. 2009) which has been appropriately adapted to the level set method. The algorithm for coupling the two codes has been validated for a variety of wave cases including a broadband spectrum showing excellent agreement when compared to theoretical results. Finally, the capabilities of the numerical framework are demonstrated by carrying out large eddy simulation (LES) of a floating wind turbine interacting with realistic ocean wind and wave conditions.

Antoni Calderer; Xin Guo; Lian Shen; Fotis Sotiropoulos

2014-01-01T23:59:59.000Z

320

Session 6: Systems operational performance  

E-Print Network (OSTI)

Three contributions were presented in this session: Tune and Orbit Feedbacks Performances: A User Perspective by Laurette Ponce , Beam Instrumentation Performance Overview by Mariusz Sapinski and LHC RF 2011 and beyond by Philippe Baudrenghien . This contribution recapitulates the outlooks given for 2012, the points to be followed up and the discussions originating in the Systems Operational Performance session.

Holzer, E B

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Model test and simulation of modified spar type floating offshore wind turbine with three catenary mooring lines  

Science Journals Connector (OSTI)

Korea is a peninsula which is surrounded by the Yellow Sea (shallow sea) the southern sea and the East Sea (deep sea). These circumstances always make us consider that a platform could have good motion performances in both shallow and deep seas. In this paper the typical spar type platform of the Offshore Code Comparison Collaboration Hywind Floating Offshore Wind Turbine (FOWT) has been modified and a new concept FOWT platform is suggested for both seas. Its motion performances are evaluated by both 1:80 scale model tests and full scale numerical simulations.

2014-01-01T23:59:59.000Z

322

PowerPoint Posters 1 PowerPointPowerPoint Creating PostersCreating Posters  

E-Print Network (OSTI)

PowerPoint Posters 1 PowerPointPowerPoint ­­ Creating PostersCreating Posters Course Description: This course is designed to assist the you in creating eye-catching effective posters for presentation of research findings at scientific conferences and exhibits. Participants will create a 4' x 6' poster from

Collins, Gary S.

323

NLO BFKL and anomalous dimensions of light-ray operators  

SciTech Connect

This presentation covers: Regge limit in the coordinate space; BFKL representation of 4-point correlation function in N = 4 SYM; light-ray operators; DGLAP representation of 4-point correlation function; and anomalous dimensions from DGAP vs BFKL representations.

Balitsky, Ian [JLAB, Old Dominion U.

2013-05-01T23:59:59.000Z

324

###Operating Principles published 411.pdf  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis of operating principles with S-system models Yun Lee 1 , Po-Wei Chen 1 , Eberhard O. Voit ⇑ The Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Drive, Suite 4103, Atlanta, GA 30332-0535, United States a r t i c l e i n f o Article history: Available online 4 March 2011 Keywords: Biochemical Systems Theory Design principle Heat stress Operating principle S-system Trehalose a b s t r a c t Operating principles address general questions regarding the response dynamics of biological systems as we observe or hypothesize them, in comparison to a priori equally valid alternatives. In analogy to design principles, the question arises: Why are some operating strategies encountered more frequently than others and in what sense might they be superior? It is at this point impossible to study operation prin- ciples in complete generality,

325

Rough Approximate Operators: Axiomatic Rough Set Theory  

Science Journals Connector (OSTI)

In rough set theory, the upper and lower approximations are ... are two abstract operators acting on the power set of U, the universe of discourse. ... The proof is an easy application of point set topology. Simi...

T. Y. Lin; Qing Liu

1994-01-01T23:59:59.000Z

326

Stochastic tipping points in climate dynamics  

Science Journals Connector (OSTI)

A crucial question recently raised in climate dynamics concerns abrupt climate transitions: Are they due to a tipping point (TP) being exceeded, or is fast noisy dynamics the cause of their excitation? In this respect, a case study based on a low-order ocean model is developed to show that in an excitable dynamical system perturbed by noise (a possible climate condition) the TPs may have limited physical meaning, with the coherence resonance mechanism being predominant. The analysis is based on an operational definition of stochastic TP, which accounts for the effect of noise and reconciles formally the TP and coherence resonance views.

Stefano Pierini

2012-02-08T23:59:59.000Z

327

Air gap assessment for floating structures in random seas Department of Civil Engineering  

E-Print Network (OSTI)

excitation. Attention is focused on a semi-submersible platform, for which both slow-drift motions (heave-order incident and diffracted wave effects are studied to determine the influence of the motions of a semi-submersible. In these studies, a single field point is studied ­ one at the geometric center of the semi-submersible. Next

Manuel, Lance

328

View  

E-Print Network (OSTI)

in the primal problem. As it can be seen by the number of floating point operations needed to generate the approximation to the set of efficient points, the strategy.

329

Local renormalizable gauge theories from nonlocal operators  

SciTech Connect

The possibility that nonlocal operators might be added to the Yang-Mills action is investigated. We point out that there exists a class of nonlocal operators which lead to renormalizable gauge theories. These operators turn out to be localizable by means of the introduction of auxiliary fields. The renormalizability is thus ensured by the symmetry content exhibited by the resulting local theory. The example of the nonlocal operator Tr{integral}A{sub {mu}}1/(D{sup 2}) A{sub {mu}} is analyzed in detail. A few remarks on the possible role that these operators might have for confining theories are outlined.

Capri, M.A.L. [UERJ, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-013 Maracana, Rio de Janeiro (Brazil)], E-mail: marcio@dft.if.uerj.br; Lemes, V.E.R. [UERJ, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-013 Maracana, Rio de Janeiro (Brazil)], E-mail: vitor@dft.if.uerj.br; Sobreiro, R.F. [CBPF, Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150, 22290-180 Urca, Rio de Janeiro (Brazil)], E-mail: sobreiro@cbpf.br; Sorella, S.P. [UERJ, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-013 Maracana, Rio de Janeiro (Brazil)], E-mail: sorella@uerj.br; Thibes, R. [UERJ, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-013 Maracana, Rio de Janeiro (Brazil)], E-mail: thibes@dft.if.uerj.br

2008-03-15T23:59:59.000Z

330

State of the Earth's Cryosphere at the Beginning of the 21st Century: Glaciers, Global Snow Cover, Floating Ice, and Permafrost and Periglacial  

E-Print Network (OSTI)

State of the Earth's Cryosphere at the Beginning of the 21st Century: Glaciers, Global Snow Cover, Floating Ice, and Permafrost and Periglacial Environments-- INTRODUCTION--CHANGES IN THE EARTH'S CRYOSPHERE of the more than 7.0 billion human beings on Earth today [in 2012], almost 2 billion more people added since

Fleskes, Joe

331

Magnet operating experience review for fusion applications  

SciTech Connect

This report presents a review of magnet operating experiences for normal-conducting and superconducting magnets from fusion, particle accelerator, medical technology, and magnetohydrodynamics research areas. Safety relevant magnet operating experiences are presented to provide feedback on field performance of existing designs and to point out the operational safety concerns. Quantitative estimates of magnet component failure rates and accident event frequencies are also presented, based on field experience and on performance of similar components in other industries.

Cadwallader, L.C.

1991-11-01T23:59:59.000Z

332

Points  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Project Selections Project Selections Announced October 26, 2009 Lead Research Organization (Partner Organizations) DOE Grant Amount Lead Organization Location Project Description 1366 Technologies Inc. (Massachusetts Institute of Technology - Lab for PV Research) $4,000,000 Lexington, MA Renewable Power (solar) "Direct Wafer" technology to form high efficiency "monocrystalline- equivalent" silicon wafers directly from molten silicon, with potential to halve the installed cost of solar photovoltaics. Agrivida, Inc. $4,565,800 Medford, MA Biomass Energy Cell wall-degrading enzymes grown within the plant itself that are activated after harvest, dramatically reducing the cost of cellulosic biofuels and chemicals Arizona State University (Fluidic Energy,

333

GE PowerPoint Template  

U.S. Energy Information Administration (EIA) Indexed Site

natural gas and diesel Rail and truck operators are evaluating the economics and will test technologies as they become available New network connections emerging 6 2013 EIA...

334

Variations in K{sup +}-Na{sup +} ion exchange depth in commercial and experimental float glass compositions  

SciTech Connect

The authors report the results of ion-exchange experiments conducted on 17 commercial soda-lime-silicate (SLS) float glass and 8 experimental SLS glass compositions. A significant variation in the depth of K{sup +} penetration with relatively small changes in composition was observed. The data were fit to a multiple regression model in which the major oxides are the independent variables and depth of K{sup +} is the dependent variable. The model indicates that increased depth of exchange (increased interdiffusion coefficient) correlates predominantly with increased K{sub 2}O and/or Na{sub 2}O content of the glass, with a decreased total alkaline earth content and with the ratio of CaO/MgO.

Sinton, C.W.; LaCourse, W.C.; O'Connell, M.J.

1999-12-01T23:59:59.000Z

335

Floating-zone growth and characterization of single crystals of cobalt orthosilicate, Co2SiO4  

Science Journals Connector (OSTI)

Good quality single crystals of high purity cobalt silicate, Co2SiO4, were successfully grown by the floating-zone method in air at atmospheric pressure along the three principle orientations. The grown crystals were 3060mm in length and 610mm in diameter. Well developed facets were found on all crystals grown. Impurity levels and the degree of a desired excess of silicon in grown crystals were determined by using the ICP-AES technique. In addition, the presence of a small amount of inclusions in the matrix of grown crystals due to a small excess of silica was confirmed by TEM. Dislocation densities were determined upon etching; the observed densities were on the order of 105106cm?2.

Q. Tang; R. Dieckmann

2011-01-01T23:59:59.000Z

336

Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

Calibration and Validation of a Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool Preprint J.R. Browning University of Colorado-Boulder J. Jonkman and A. Robertson National Renewable Energy Laboratory A.J. Goupee University of Maine Presented at the Science of Making Torque from Wind Oldenburg, Germany October 9-11, 2012 Conference Paper NREL/CP-5000-56138 November 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes.

337

A method to avoid negative damped low frequent tower vibrations for a floating, pitch controlled wind turbine  

Science Journals Connector (OSTI)

Wind turbines mounted on floating platforms is subjected to completely different and soft foundation properties, than seen for onshore wind turbines. This leads to much lower natural frequencies, related to the rigid body motion of the structure which again leads to an unfavorable coupling between tower motion and the pitch control of the turbine. The tower motion in combination with the aerodynamics and the pitch control will be poor or even negative damped which causes large transient loads if not accounted for. The reason for this low damping is shown to be caused by a too fast pitch regulation compared to the motion of the tower or in other words the lowest control-structure natural frequency must be lower than the lowest critical tower frequency. A control algorithm is presented including the tuning method (pole-placement) to ensure the desired control frequency which provides stable tower vibration modes.

T J Larsen; T D Hanson

2007-01-01T23:59:59.000Z

338

Oak Ridge Office SharePoint( MicrosoftSHarePointServer) PIA,...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

SharePoint( MicrosoftSHarePointServer) PIA, Information Resourses Management Division Oak Ridge Office SharePoint( MicrosoftSHarePointServer) PIA, Information Resourses Management...

339

Detecting determinism from point processes  

Science Journals Connector (OSTI)

The detection of a nonrandom structure from experimental data can be crucial for the classification, understanding, and interpretation of the generating process. We here introduce a rank-based nonlinear predictability score to detect determinism from point process data. Thanks to its modular nature, this approach can be adapted to whatever signature in the data one considers indicative of deterministic structure. After validating our approach using point process signals from deterministic and stochastic model dynamics, we show an application to neuronal spike trains recorded in the brain of an epilepsy patient. While we illustrate our approach in the context of temporal point processes, it can be readily applied to spatial point processes as well.

Ralph G. Andrzejak; Florian Mormann; Thomas Kreuz

2014-12-02T23:59:59.000Z

340

Congressional Affairs Points of Contact  

Energy.gov (U.S. Department of Energy (DOE))

Lists the Office of Congressional Affairs points of contacts. The Office of Congressional Affairs is available to assist congressional offices and committees regarding Department of Energy programs and activities.

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Formal Specification of Operating System Operations  

E-Print Network (OSTI)

Formal Specification of Operating System Operations Dan Zhou Department of Computer Science.black@nist.gov This paper describes the development of a formal specification for a secure operating system architecture operations. We also provide a uniform environment for system commands that change the security state

Black, Paul E.

342

Robot positioning based on point-to-point motion capability  

SciTech Connect

This paper presents an optimal search method for determining the base location of a robot manipulator so that the robot can have a designated point-to-point (PTP) motion capabilities. Based on the topological characterization of the manipulator workspace and the definitions of various p-connectivity, a computational method is developed for enumerating various PTP motion capabilities into quantitative cost functions. Then an unconstrained search by minimizing the cost function yields the task feasible location of the robot base. This methodology is useful for placement of mobile manipulators and robotic workcell layout design.

Park, Y. S.; Cho, H. S.; Koh, K. C.

2000-03-20T23:59:59.000Z

343

(sanitary) landfill operator  

Science Journals Connector (OSTI)

(sanitary) landfill operator, Mllkippenbetreiber m, Mlldeponiebetreiber, Kippenbetreiber, Deponiebetreiber

2014-08-01T23:59:59.000Z

344

AN AUTOZEROING FLOATING-GATE BANDPASS FILTER Paul Hasler, Bradley A. Minch, and Chris Diorio  

E-Print Network (OSTI)

is the thermal Figure 1: An autozeroing oating-gate ampli er AFGA that uses pFET hot-electron injection a bandpass oating-gate ampli er that uses tunneling and pFET hot-electron injection to set its DC operating the current through the pFET. Steady state occurs when the injection current is equal to the tunneling current

Diorio, Chris

345

Design, testing and use of a lockable flapper float valve for the Ocean Drilling Program  

E-Print Network (OSTI)

operations. It would then be required to have the capability of being locked open by some remote actuation technique so that logging could proceed unimpeded without requiring a bit release or pulling the drillstring to the surface. With the understanding... open. The pressure would then be increased further causing the ball to distort enough to squeeze or extrude through the landing surface and exit the pipe. The sudden decrease in back pressure when the ball releases signals the rig floor pump...

Huey, David Philip

2012-06-07T23:59:59.000Z

346

Operations Directorate (OPS Directorate)  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Directorate (OPS Directorate) Operations Directorate (OPS Directorate) Purpose A group chartered by the Associate Laboratory Director for the Advanced Photon Source that includes the responsible Division Directors and other appropriate APS operations personnel. The Operations Directorate collectively coordinates operating decisions that affect the facility as a whole and establishes both long- and short-term schedules, including scheduled maintenance and facility improvement periods. The Operations Directorate is the APS forum in which decisions regarding operations are discussed: These include, but are not limited to: Safety issues related to operations Operational Schedule Global operating parameters within the defined and approved operational and safety envelopes, such as energy, maximum circulating beam

347

Development of the temperature fields in an electric arc struck on a point electrode in a homogeneous gas stream  

Science Journals Connector (OSTI)

A study is made of the problem of a point electric source in a homogeneous gas stream and operating in the arc discharge regime. The development of an electric arc struck on a point cathode in a ... . The station...

A. B. Vatazhin

348

Hermitian Young operators  

SciTech Connect

Starting from conventional Young operators, we construct Hermitian operators which project orthogonally onto irreducible representations of the (special) unitary group.

Keppeler, Stefan, E-mail: stefan.keppeler@uni-tuebingen.de [Mathematisches Institut, Universitt Tbingen, Auf der Morgenstelle 10, 72076 Tbingen (Germany)] [Mathematisches Institut, Universitt Tbingen, Auf der Morgenstelle 10, 72076 Tbingen (Germany); Sjdahl, Malin, E-mail: malin.sjodahl@thep.lu.se [Department of Astronomy and Theoretical Physics, Lund University, Slvegatan 14A, 22362 Lund (Sweden)] [Department of Astronomy and Theoretical Physics, Lund University, Slvegatan 14A, 22362 Lund (Sweden)

2014-02-15T23:59:59.000Z

350

Bio-optical profiling floats as new observational tools for biogeochemical and ecosystem studies: Potential synergies with ocean color remote sensing  

SciTech Connect

Profiling floats now represent a mature technology. In parallel with their emergence, the field of miniature, low power bio-optical and biogeochemical sensors is rapidly evolving. Over recent years, the bio-geochemical and bio-optical community has begun to benefit from the increase in observational capacities by developing profiling floats that allow the measurement of key biooptical variables and subsequent products of biogeochemical and ecosystem relevance like Chlorophyll a (Chla), optical backscattering or attenuation coefficients which are proxies of Particulate Organic Carbon (POC), Colored Dissolved Organic Matter (CDOM). Thanks to recent algorithmic improvements, new bio-optical variables such as backscattering coefficient or absorption by CDOM, at present can also be extracted from space observations of ocean color. In the future, an intensification of in situ measurements by bio-optical profiling floats would permit the elaboration of unique 3D/4D bio-optical climatologies, linking surface (remotely detected) properties to their vertical distribution (measured by autonomous platforms), with which key questions in the role of the ocean in climate could be addressed. In this context, the objective of the IOCCG (International Ocean Color Coordinating Group) BIO-Argo working group is to elaborate recommendations in view of a future use of bio-optical profiling floats as part of a network that would include a global array that could be 'Argo-relevant', and specific arrays that would have more focused objectives or regional targets. The overall network, realizing true multi-scale sustained observations of global marine biogeochemistry and biooptics, should satisfy the requirements for validation of ocean color remote sensing as well as the needs of a wider community investigating the impact of global change on biogeochemical cycles and ecosystems. Regarding the global profiling float array, the recommendation is that Chla as well as POC should be the key variables to be systematically measured. A first target would be to implement 20% of the Argo floats with these measurements within a five-year term. The yearly additional cost is estimated to 1.5 M$, including additional management structure in each of the two Global Data Assembly Centers.

Claustre, H.; Bishop, J.; Boss, E.; Bernard, S.; Berthon, J.-F.; Coatanoan, C.; Johnson, K.; Lotiker, A.; Ulloa, O.; Perry, M.J.; D'Ortenzio, F.; D'andon, O.H.F.; Uitz, J.

2009-10-01T23:59:59.000Z

351

Microsoft PowerPoint - Proceedings Cover Sheets  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimum pressure and concentration of CO Optimum pressure and concentration of CO 2 in flue gases for CO 2 capture by antisublimation May 8-11, 2006 * Hilton Alexandria Mark Center * Alexandria, Virginia D. Clodic, M. Younes, Alain Bill Outline * Anti-sublimation CO 2 capture system * Flue gases CO 2 concentration sensitivity analysis * Flue gases pressure sensitivity analysis * High Pressure Flue Gases * Conclusions 2 Anti-sublimation CO 2 capture system * CO 2 capture system based on the CO 2 physical properties * CO 2 triple point is at -56.5 C, 520 kPa, below these temperature and pressure CO 2 is either in gas or solid phase. No liquid. * The CO 2 solid phase requires a defrosting process at a pressure higher then 520 kPa thus a swing process is necessary for continuous operation. 3 A B C D E A' CO 2 capture system on the T-s diagram

352

On the use of the double floating probe method to infer the difference between the electron and the heavy particles temperatures in an atmospheric pressure, vortex-stabilized nitrogen plasma jet  

SciTech Connect

Sweeping double probe measurements in an atmospheric pressure direct current vortex-stabilized plasma jet are reported (plasma conditions: 100 A discharge current, N{sub 2} gas flow rate of 25 Nl/min, thoriated tungsten rod-type cathode, copper anode with 5 mm inner diameter). The interpretation of the double probe characteristic was based on a generalization of the standard double floating probe formulae for non-uniform plasmas coupled to a non-equilibrium plasma composition model. Perturbations caused by the current to the probe together with collisional and thermal processes inside the probe perturbed region were taken into account. Radial values of the average electron and heavy particle temperatures as well as the electron density were obtained. The calculation of the temperature values did not require any specific assumption about a temperature relationship between different particle species. An electron temperature of 10?900 900 K, a heavy particle temperature of 9300 900 K, and an electron density of about 3.5 10{sup 22} m{sup ?3} were found at the jet centre at 3.5 mm downstream from the torch exit. Large deviations from kinetic equilibrium were found toward the outer border of the plasma jet. These results showed good agreement with those previously reported by the authors by using a single probe technique. The calculations have shown that this method is particularly useful for studying spraying-type plasma torches operated at power levels of about 15 kW.

Prevosto, L., E-mail: prevosto@waycom.com.ar; Mancinelli, B. R. [Grupo de Descargas Elctricas, Departamento Ingeniera Electromecnica, Facultad Regional Venado Tuerto (UTN), Laprida 651, 2600 Venado Tuerto, Santa Fe (Argentina)] [Grupo de Descargas Elctricas, Departamento Ingeniera Electromecnica, Facultad Regional Venado Tuerto (UTN), Laprida 651, 2600 Venado Tuerto, Santa Fe (Argentina); Kelly, H. [Grupo de Descargas Elctricas, Departamento Ingeniera Electromecnica, Facultad Regional Venado Tuerto (UTN), Laprida 651, 2600 Venado Tuerto, Santa Fe (Argentina) [Grupo de Descargas Elctricas, Departamento Ingeniera Electromecnica, Facultad Regional Venado Tuerto (UTN), Laprida 651, 2600 Venado Tuerto, Santa Fe (Argentina); Instituto de Fsica del Plasma (CONICET), Departamento de Fsica, Facultad de Ciencias Exactas y Naturales (UBA) Ciudad Universitaria Pab. I, 1428 Buenos Aires (Argentina)

2014-05-15T23:59:59.000Z

353

Point Source Discharges to Surface Waters (North Carolina) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) < Back Eligibility Commercial Industrial Construction Transportation Savings Category Buying & Making Electricity Program Info State North Carolina Program Type Siting and Permitting Provider Department of Environment and Natural Resources This rule requires permits for control of sources of water pollution by providing the requirements and procedures for application and issuance of state National Pollutant Discharge Elimination System (NPDES) permits for a discharge from an outlet, point source, or disposal system discharging to the surface waters of the state, and for the construction, entering a contract for construction, and operation of treatment works with such a

354

Floating axis wind turbines for offshore power generationa conceptual study  

Science Journals Connector (OSTI)

The cost of energy produced by offshore wind turbines is considered to be higher than land based ones because of the difficulties in construction, operation and maintenance on offshore sites. To solve the problem, we propose a concept of a wind turbine that is specially designed for an offshore environment. In the proposed concept, a floater of revolutionary shape supports the load of the wind turbine axis. The floater rotates with the turbine and the turbine axis tilts to balance the turbine thrust, buoyancy and gravity. The tilt angle is passively adjustable to wind force. The angle is 30 at rated power. The simplicity of the system leads to further cost reduction of offshore power generation.

Hiromichi Akimoto; Kenji Tanaka; Kiyoshi Uzawa

2011-01-01T23:59:59.000Z

355

Practical Approach to Water System Optimal Operation  

Science Journals Connector (OSTI)

Abstract Optimal pump scheduling is a major consideration when dealing with minimizing operational costs of a water distribution system. Pump operation must balance between three factors. Water balance constraints, including consumer demand and water tank volumes. Hydraulic constraints determining water pump operating point. Electrical tariff rate effecting energy cost. Optimization models may assume linear or discrete pump operation, depending on type and accuracy of the model in use. Linear operation assumes the pump may operate during part of the time step while discrete operation requires the pump to be either on or off during the entire time step. Linear optimization models commonly have short solution times, but cannot contain non-linear constraints such as hydraulic headloss. By such, linear model results may be difficult to implement in a real water system as the hydraulic behavior of the system may render the optimal solution impractical. Likewise, if the pump operation partially uses the time step the pump may be forced to come in and out of duty often causing mechanical ware and tare. Discrete operation provides smooth pump operation and may contain non-linear hydraulic constraint to calculate a more realistic working point for the pump. Discrete models have long solution times due the vast amount of pump operating combinations, which must be explored. Heuristic techniques may be used to shorten solution times but these do not assure global minimization of the solution. The goal of the research is to create a minimum cost optimal operation water distribution system model that utilizes the short solution time of a linear model but also includes non-linear hydraulic constraints effecting pump energy consumption and discrete pump operation. The motivation is to use the model for real-time pump scheduling and for water system design.

E. Price; A. Ostfeld

2014-01-01T23:59:59.000Z

356

Three-point correlators from string amplitudes: Mixing and Regge spins  

E-Print Network (OSTI)

This paper has two parts. We first compute the leading contribution to the strong-coupling mixing between the Konishi operator and a double-trace operator composed of chiral primaries by using flat-space vertex operators for the string-duals of the operators. We then compute the three-point functions for protected or unprotected scalar operators with higher spin operators on the leading Regge trajectory. Here we see that the nontrivial spatial structures required by conformal invariance arise naturally from the form of the polarization tensors in the vertex operators. We find agreement with recent results extracted from Mellin amplitudes for four-point functions, as well as with earlier supergravity calculations. We also obtain some new results for other combinations of operators.

Joseph A. Minahan; Raul Pereira

2014-10-17T23:59:59.000Z

357

BP Cherry Point Congeneration Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

REVISED 404 (B) (1) REVISED 404 (B) (1) ALTERNATIVES ANALYSIS BP Cherry Point Cogeneration Project Prepared for: BP West Coast Products, LLC Revised June 29, 2004 1501 Fourth Avenue, Suite 1400 Seattle, WA 98101-1616 (206) 438-2700 33749546.05070 i TABLE OF CONTENTS Page 1.0 I NT RODUCTI ON ................................................................................................................... 1 2.0 P URPOSE AND NEE D .......................................................................................................... 1 2.1 RELIABILITY .................................................................................................... 1 2.2 COST-EFFECTIVENESS ................................................................................... 3 2.3 SIZE OF FACILITY............................................................................................

358

Orientifold points in M theory  

Science Journals Connector (OSTI)

We identify the lift to M theory of the four types of orientifold points, and show that they involve a chiral fermion on an orbifold fixed circle. From this lift, we compute the number of normalizable ground states for the SO(N) and Sp(N) supersymmetric quantum mechanics with sixteen supercharges. The results agree with known results obtained by the mass deformation method. The mass of the orientifold is identified with the Casimir energy.

Amihay Hanany; Barak Kol; Arvind Rajaraman

1999-01-01T23:59:59.000Z

359

Floating Piston Expander Development for a Small?Scale Collins Type 10 K Cryocooler for Space Applications  

Science Journals Connector (OSTI)

Future spacecraft cooling and sensing systems will require advanced multi?stage cryocoolers capable of providing continuous cooling at multiple temperature levels ranging from 10 K to 95 K. Stirling and pulse?tube cryocoolers have achieved compactness and reliability by adopting mechanically simple cold head configurations at the expense of thermodynamic efficiency. Large?scale terrestrial cryogenic refrigerators achieve much higher efficiencies by employing complex designs but their high efficiency is not retained at the small scale required for spacecraft cryogenic cooling. AMTI in collaboration with MIT is developing a multi?stage 10 K cryocooler that applies modern microelectronic sophistication to achieve high efficiency in a reliable compact design. The cryocooler is based upon a novel modification of the Collins cycle a cycle commonly used in many high?efficiency terrestrial cryogenic machines. Innovations of the design include floating piston expanders and electro?magnetic smart valves which eliminate the need for mechanical linkages and reduce the input power size and weight of the cryocooler in an affordable modular design. This paper will present the design of the first generation prototype the results of development testing and the direction of future development efforts.

C. L. Hannon; J. Gerstmann; B. J. Krass; M. J. Traum; J. G. Brisson; J. L. Smith Jr.

2004-01-01T23:59:59.000Z

360

JLF Conduct of Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Jupiter Laser Facility (JLF) Conduct Of Operations The Conduct of Operations is a set of procedures and guidelines that are put in place to ensure operational safety and security...

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Heat Transfer Operators Associated with Quantum Operations  

E-Print Network (OSTI)

Any quantum operation applied on a physical system is performed as a unitary transformation on a larger extended system. If the extension used is a heat bath in thermal equilibrium, the concomitant change in the state of the bath necessarily implies a heat exchange with it. The dependence of the average heat transferred to the bath on the initial state of the system can then be found from the expectation value of a hermitian operator, which is named as the heat transfer operator (HTO). The purpose of this article is the investigation of the relation between the HTOs and the associated quantum operations. Since, any given quantum operation on a system can be realized by different baths and unitaries, many different HTOs are possible for each quantum operation. On the other hand, there are also strong restrictions on the HTOs which arise from the unitarity of the transformations. The most important of these is the Landauer erasure principle. This article is concerned with the question of finding a complete set of restrictions on the HTOs that are associated with a given quantum operation. An answer to this question has been found only for a subset of quantum operations. For erasure operations, these characterizations are equivalent to the generalized Landauer erasure principle. For the case of generic quantum operations however, it appears that the HTOs obey further restrictions which cannot be obtained from the entropic restrictions of the generalized Landauer erasure principle.

. Aksak; S. Turgut

2011-04-14T23:59:59.000Z

362

HQ Human Resources - Points of Contact | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HQ Human Resources - Points of Contact HQ Human Resources - Points of Contact HQ Human Resources - Points of Contact Name Division Phone Room # Email Address ARPA-E Burkley, Tania Executive Resources 202-586-7657 4E-084 Tania.Burkley@hq.doe.gov Powell, NiCole HR Operations 202-287-5252 4E-084 Nicole.Powell@hq.doe.gov Adams, Shelia HR Operations (Benefits,Retirement, OWCP) 202-586-3097 GM-169 Sheila.Adams@hq.doe.gov Peggy Robinson Labor and Employee Relations 202-586-2591 8E-092 Peggy.Robinson@hq.doe.gov ARRA Burkey Tania Executive Resources 202-586-7657 4E-084 Tania.Burkley@hq.doe.gov Coates, Ina HR Operations 202-586-6618 4E-084 Ina.Coates@hq.doe.gov Hawkins, Renee HR Operations (Benefits,Retirement, OWCP) 202-586-2163 GM-169 Renee.Hawkins@hq.doe.gov BPA Matthews-Williams, Kimberly Executive Resources 202-586-9844 4E-084 Kimberly.Matthews-Williams@hq.doe.gov

363

Field's Point Wastewater Treatment Facility (Narragansett Bay...  

Open Energy Info (EERE)

Field's Point Wastewater Treatment Facility (Narragansett Bay Commission) Jump to: navigation, search Name Field's Point Wastewater Treatment Facility (Narragansett Bay Commission)...

364

ChargePoint America | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

ChargePoint America ChargePoint America 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting...

365

Starting Points | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

(M&O) Contract Competition Starting Points Starting Points Kansas City Plant Related Web Pages Summary Kansas City Plant Home Page Kansas City Plant Contracts DOE Directives...

366

PIN detector arrays and integrated readout circuitry on high-resistivity float-zone silicon  

SciTech Connect

A new silicon PIN-diode-based pixel detector for ionizing particles integrating a two-dimensional array of detecting elements with readout circuitry has been developed and extensively tested. The signal charge is collected on a low-capacitance electrode avoiding loss of charge into the local readout circuitry within each pixel. The spatial resolution for a given circuitry size is optimized. The approach required back side patterning of the wafer, the only nonconventional part in the Stanford BiCMOS based manufacturing process. Thirteen masks on the front side of the wafer and three on the back yielded both CMOS readout circuitry and detecting elements. A gettering step helped obtain a high minority carrier lifetime (500 [mu]s). Test results obtained by infrared illumination, gamma rays, and high-energy particles, which have been described in detail elsewhere, will be summarized. They include a signal to single-channel-noise performance of about 150 to 1 for a minimum ionizing particle, which is an order of magnitude better than silicon strip detectors currently used, and a record-breaking spatial resolution in the direction of smallest pixel pitch (standard deviation of about 1.8 [mu]m). The authors describe the device and chip operation of the new detector in detail.

Snoeys, W.; Plummer, J. (Stanford Univ., CA (United States). Center for Integrated Systems); Parker, S.; Kenney, C. (Univ. of Hawaii, Honolulu, HI (United States). Dept. of Physics)

1994-06-01T23:59:59.000Z

367

Design and Analysis for a Floating Oscillating Surge Wave Energy Converter: Preprint  

SciTech Connect

This paper presents a recent study on the design and analysis of an oscillating surge wave energy converter. A successful wave energy conversion design requires the balance between the design performance and cost. The cost of energy is often used as the metric to judge the design of the wave energy conversion system. It is often determined based on the device power performance, the cost for manufacturing, deployment, operation and maintenance, as well as the effort to ensure the environmental compliance. The objective of this study is to demonstrate the importance of a cost driven design strategy and how it can affect a WEC design. Three oscillating surge wave energy converter (OSWEC) designs were used as the example. The power generation performance of the design was modeled using a time-domain numerical simulation tool, and the mass properties of the design were determined based on a simple structure analysis. The results of those power performance simulations, the structure analysis and a simple economic assessment were then used to determine the cost-efficiency of selected OSWEC designs. Finally, a discussion on the environmental barrier, integrated design strategy and the key areas that need further investigation is also presented.

Yu, Y. H.; Li, Y.; Hallett, K.; Hotimsky, C.

2014-03-01T23:59:59.000Z

368

Dynamic considerations in the design of floating nuclear power plants (FNPP)  

Science Journals Connector (OSTI)

Design criteria and their implementation in the FNPP when subjected to dynamic effects are discussed. The FNPP idea was proposed in the late 1960's because of site flexibility immediate abundance of water possible decoupling from seismic shock and because the concept lends itself to a high level of standardization. The FNPP when located offshore must be protected by a breakwater to which it is permanently fastened by a mooring system. The dynamic considerations affecting the design of the FNPP are due to natural phenomena accidents and man?made adverse conditions. Tornadoes hurricanes tsunami waves and ice loading are considered for both safe operation and safe shutdown of the plant. Earthquakes sub?marine slides and underwater currents are considered for the breakwater design as well as for their effect on the FNPP through the mooring system. The above conditions are investigated by model test and analysis of the seabed?fluid?structure interaction. Accident conditions such as ship collisions with the breakwater shipping accidents resulting in air blast and aircraft crash are examined by statistical and probability methods and by structural testing and analysis.

G. G. Amir; K. K. Kapur

1976-01-01T23:59:59.000Z

369

Mission Operations & Data Systems  

E-Print Network (OSTI)

Mission Operations & Data Systems The LASP Mission Operations & Data Systems (MO&DS) group staffs and instruments. Operational software acts like the health systems in a body, ensuring that temperature, energy. The software monitors the health of on-board systems; anything unusual is flagged and sent to mission operators

Mojzsis, Stephen J.

370

Complex saddle points in QCD at finite temperature and density  

E-Print Network (OSTI)

The sign problem in QCD at finite temperature and density leads naturally to the consideration of complex saddle points of the action or effective action. The global symmetry $\\mathcal{CK}$ of the finite-density action, where $\\mathcal{C}$ is charge conjugation and $\\mathcal{K}$ is complex conjugation, constrains the eigenvalues of the Polyakov loop operator $P$ at a saddle point in such a way that the action is real at a saddle point, and net color charge is zero. The values of $Tr_{F}P$ and $Tr_{F}P^{\\dagger}$ at the saddle point, are real but not identical, indicating the different free energy cost associated with inserting a heavy quark versus an antiquark into the system. At such complex saddle points, the mass matrix associated with Polyakov loops may have complex eigenvalues, reflecting oscillatory behavior in color-charge densities. We illustrate these properties with a simple model which includes the one-loop contribution of gluons and massless quarks moving in a constant Polyakov loop background. Confinement-deconfinement effects are modeled phenomenologically via an added potential term depending on the Polyakov loop eigenvalues. For sufficiently large $T$ and $\\mu$, the results obtained reduce to those of perturbation theory at the complex saddle point. These results may be experimentally relevant for the CBM experiment at FAIR.

Hiromichi Nishimura; Michael C. Ogilvie; Kamal Pangeni

2014-08-12T23:59:59.000Z

371

ARM - SGP Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Operations SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Operations Routine Operations SGP central facility offices. SGP central facility offices. The overwhelming majority of the measurements with the highest priority, on which the existing experimental designs are based, are regular routine observations, as specified in the ARM Program Plan, 1990 (U.S. Department of Energy 1990). Scientifically and logistically, routine operations also serve as the basis and background for all nonroutine operations, including

372

Schrdinger operators on armchair nanotubes. II  

E-Print Network (OSTI)

We consider the Schr\\"odinger operator with a periodic potential on quasi-1D models of armchair single-wall nanotubes. The spectrum of this operator consists of an absolutely continuous part (intervals separated by gaps) plus an infinite number of eigenvalues with infinite multiplicity. We describe the absolutely continuous spectrum of the Schr\\"odinger operator: 1) the multiplicity, 2) endpoints of the gaps, they are given by periodic or antiperiodic eigenvalues or resonances (branch points of the Lyapunov function), 3) resonance gaps, where the Lyapunov function is non-real. We determine the asymptotics of the gaps at high energy.

Andrey Badanin; Jochen Brning; Evgeny Korotyaev

2007-07-26T23:59:59.000Z

373

Microsoft PowerPoint - Town Bluff Vegetation impact.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

's. In 1989 the used for the Lake constructed in the 1950's. In 1989 the 's. In 1989 the used for the Lake constructed in the 1950's. In 1989 the dam was modified for the installation of Robert D. Willis dam was modified for the installation of Robert D. Willis Power Plant. The plant has two S Power Plant. The plant has two S - - Tube type turbines Tube type turbines which operate generators nominally rated at 4Mwh each. which operate generators nominally rated at 4Mwh each. Actual power production has rarely exceeded 3.6Mwh Actual power production has rarely exceeded 3.6Mwh Invasive species of Vegetation has increased to the Invasive species of Vegetation has increased to the point that an aquatic vegetation control program is being point that an aquatic vegetation control program is being managed by Town Bluff in coordination with TPWD and managed by Town Bluff in coordination with TPWD and

374

CEI PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Peer Review Peer Review November 2, 2010 2 Interoperability of Demand Response Resources Demonstration in NY * Background * Participants * Objective * Goals * Technologies * Challenges * Schedule 3 Background In New York City, backup generators are estimated to comprise ~1,300MW But only approximately 140 MW currently participate in demand response programs. 4 Project Objective Development of interoperability techniques to leverage customer owned distributed generation and demand response resources. 5 Project Participants * Con Edison * Innoventive Power * Verizon * Infotility 6 Project Goals * Develop enhanced interoperability * Integrate distributed resources in to distribution network operations * Aggregate demand response resources to supply market- based activities * Extend data gathering and visualization into 'customer domain'

375

BP Cherry Point Cogeneration Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Final Environmental Impact Statement Final Environmental Impact Statement DOE/EIS-0349 Lead Agencies: Energy Facility Site Evaluation Council Bonneville Power Administration Cooperating Agency: U.S. Army Corps of Engineers August 2004 EFSEC Washington State Energy Facility Site Evaluation Council July 12, 2004 Dear Reader: Enclosed for your reference is the abbreviated Final Environmental Impact Statement (FEIS) for the proposed BP Cherry Point Cogeneration Project. This document is designed to correct information and further explain what was provided in the Draft Environmental Impact Statement (DEIS). The proponent, BP West Coast Products, LLC, has requested to build a 720-megawatt gas-fired combined cycle cogeneration facility in Whatcom County, Washington, and interconnect this facility into the regional

376

1572 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 38, NO. 6, NOVEMBER/DECEMBER 2002 A Novel Neutral Point Potential Stabilization  

E-Print Network (OSTI)

, Noritaka Koga, and Tsuneo Kume, Member, IEEE Abstract--This paper proposes a new neutral point potential control technique for the neutral-point-clamped three-level inverter. Utilizing the phase current polarity point voltage under all operating conditions including the zero-power-factor condition. Detailed

Hava, Ahmet

377

Security Operations, Laboratory Protection Division, Brookhaven National  

NLE Websites -- All DOE Office Websites (Extended Search)

Security Operations Security Operations Homepage Brookhaven ID Badges, Passes, & Vehicle Stickers Hours of Operation Points of Contact Unclassified Foreign Visits and Assignments: FAQs BNL Site Access Main Gate Access Forms Security Operations L. Butera, Manager Brookhaven National Laboratory Bldg. 50 - P.O. Box 5000 Upton, NY 11973-5000 (631) 344-4691 E-mail: lbutera@bnl.gov Security Operations Mission Statement: To protect DOE special nuclear materials, classified matter, sensitive information, and certain sensitive property against theft, diversion, or destruction; to prevent the sabotage of programs that could result in significant scientific or financial impact; to prevent the malevolent release of hazardous materials including radiological, chemical, and infectious agents or other criminal acts that would endanger employees, the public, and the environment.

378

EIS-0002: Allocation of Petroleum Feedstock, Baltimore Gas & Electric Co., Sollers Point SNG Plant, Sollers Point, Baltimore County, MD  

Energy.gov (U.S. Department of Energy (DOE))

The Economic Regulatory Administration (ERA) developed this EIS to evaluate the social, economic and environmental impacts which may occur within the Baltimore Gas and Electric Company (BG&E) service area as a result of the ERA' s proposed decision to allocate up to 2,186,000 barrels per year of naphtha feedstock to BG&E to operate BG&E's existing synthetic natural gas facility located on Sollers Point in Baltimore County, Maryland.

379

A stable adaptive numerical scheme for hyperbolic conservation laws  

E-Print Network (OSTI)

The resulting programs were run on a VAX 11/780 with a floating point accelerator under the VMS 2.5 operating system and Pascal 1.2 compiler, and under the...

380

ON A CLASS OF LIMITED MEMORY PRECONDITIONERS FOR ...  

E-Print Network (OSTI)

[2]). Section 3 is mainly concerned with implementation details. An algorithm with complexity in O(k2n) in memory and in number of floating point operations, that.

2008-12-04T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

linear-elements-code.scm  

E-Print Network (OSTI)

(o Linear-finite-element-operator)) ;; initialize various fields that depend on the space ;; if coefficients is not defined, we set it to arrays of floating-point ;; zeros...

382

CONDUCT OF OPERATIONS (CO)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CONDUCT OF OPERATIONS (CO) CONDUCT OF OPERATIONS (CO) OBJECTIVE TA-55 SST Facility NNSA ORR Implementation Plan 1 1 CO.1 The formality and discipline of operations is adequate to conduct work safely and programs are inplace to maintain this formality and discipline. (Core Requirement 13) Criteria 1. Programmatic elements of conduct of operations are in place for TA-55 SST operations. 2. The TA-55 SST operations personnel adequately demonstrate the principles of conduct ofoperations requirements during the shift performance period. Approach Record Reviews: Review procedures and other facility documents to verify compliance with conduct of operations principles. Interviews: Interview a sampling of the TA-55 SST associated personnel to validate their understanding of the conduct of operations principles (e.g., procedure usage,

383

Transforming Commercial Building Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Transforming Commercial Building Operations Transforming Commercial Building Operations Transforming Commercial Building Operations Ron Underhill Pacific Northwest National Laboratory ronald.underhill@pnnl.gov (509)375-9765 April 4, 2013 2 | Building Technologies Office eere.energy.gov * Most buildings are not commissioned (Cx) before occupancy, including HVAC and lighting systems * Buildings often are poorly operated and maintained leading to significant energy waste of 5 to 20%, even when they have building automation systems (BASs)

384

Transforming Commercial Building Operations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transforming Commercial Building Operations Transforming Commercial Building Operations Transforming Commercial Building Operations Ron Underhill Pacific Northwest National Laboratory ronald.underhill@pnnl.gov (509)375-9765 April 4, 2013 2 | Building Technologies Office eere.energy.gov * Most buildings are not commissioned (Cx) before occupancy, including HVAC and lighting systems * Buildings often are poorly operated and maintained leading to significant energy waste of 5 to 20%, even when they have building automation systems (BASs)

385

Quantum Operations and Measurement  

E-Print Network (OSTI)

the Stinespring dilation form of E . 6 #12; II: operator­sum representation E(#) = Tr env # U(## # env )U

Seevinck, Michiel

386

Challenge # 3 ? Operational Issues  

Energy.gov (U.S. Department of Energy (DOE))

Fernando Preto presentation on May 9, 2012, at the Pyrolysis Oil Workshop on Challenge #3 Operational Issues.

387

A mathematical model for the performance of the compressed-film, floating-deck, flat-plate solar-energy collector  

E-Print Network (OSTI)

A MATHEMATICAL MODEL FOR THE PERFORMANCE OP THE COMFR. . 'SSED-FILM PLOATING-DECK, PLAT-PLATE SOLAR-ENERGY COLI CTOR A Thesis HO-KAI CHAN Submitted to the Graduate Co1lege of Texas A&M University in partial fulfillment of 0he requirement... for the degree of FiASTER OP SCIENCE August 197~ MaJor SubJect: Chemical Engineering A MATHEMATICAL MODEL FOR THE PERFORMANCE OF THE COMPRESSED-FILM, FLOATING-DECK~ PLAT-PLATE SOLAR-ENERGY COLLECTOR A Thesis by HO-KAI CHAN Approved as to style...

Chan, Ho-Kai

2012-06-07T23:59:59.000Z

388

Operations and maintenance philosophy  

SciTech Connect

This Operations and Maintenance (O&M) Philosophy document is intended to establish a future O&M vision, with an increased focus on minimizing worker exposure, ensuring uninterrupted retrieval operations, and minimizing operation life-cycle cost. It is intended that this document would incorporate O&M lessons learned into on-going and future project upgrades.

DUNCAN, G.P.

1999-10-28T23:59:59.000Z

389

Operating System Resource Management  

E-Print Network (OSTI)

Operating System Resource Management Date: Monday, September 27, 2010 Time: 2:00 ­ 3:00 pm Location allocation and de-allocation by an operating system of processor cores, memory pages, and various types constrained. This talk will propose a scheme for addressing the operating system resource management problem

390

BROUWER'S FIXED POINT THEOREM JASPER DEANTONIO  

E-Print Network (OSTI)

BROUWER'S FIXED POINT THEOREM JASPER DEANTONIO Abstract. In this paper we prove Brouwer's Fixed be used to make three sequences which all have p as their limit point. Date: July 27, 2009. 1 #12;2 JASPER

May, J. Peter

391

Team Total Points Beta Theta Pi 2271  

E-Print Network (OSTI)

Bubbles 40 Upset City 30 Team Success 30 #12;Team Total Points Sly Tye 16 Barringer 15 Fire Stinespring 15

Buehrer, R. Michael

392

Other Purdue Web points of Interest  

E-Print Network (OSTI)

Other Purdue Web points of interest. Purdue University Home Page --- Schedule of Classes Graduate School Agronomy Computer Science --- CS & E...

393

Level Set Implementations on Unstructured Point Cloud  

E-Print Network (OSTI)

Level Set Implementations on Unstructured Point Cloud by HO, Hon Pong A Thesis Submitted;Level Set Implementations on Unstructured Point Cloud by HO, Hon Pong This is to certify that I have implementations on unstructured point cloud 15 3.1 Level set initialization

Duncan, James S.

394

Point-based multiscale surface representation  

Science Journals Connector (OSTI)

In this article we present a new multiscale surface representation based on point samples. Given an unstructured point cloud as input, our method first computes a series of point-based surface approximations at successively higher levels of smoothness, ... Keywords: Surface representations, geometric modeling, morphing, scale space, shape modeling, spectral filtering

Mark Pauly; Leif P. Kobbelt; Markus Gross

2006-04-01T23:59:59.000Z

395

Range Monitoring with Photo-points  

E-Print Network (OSTI)

Photo-points provide a way for owners/managers to monitor rangeland health with a minimum of time and expense. This publication explains when, where and how often to photograph rangeland points, how to set up a photo point, and how to interpret...

McGinty, Allan; White, Larry D.

1998-08-31T23:59:59.000Z

396

Nesting points in the sphere Dan Archdeacon  

E-Print Network (OSTI)

Nesting points in the sphere Dan Archdeacon Dept. of Computer Science University of Vermont) Abstract Let G be a graph embedded in the sphere. A k-nest of a point x not in G is a collection C 1 nested if each point not on the graph has a k-nest. In this paper we

Archdeacon, Dan

397

[FLOATING RATE GUARANTEED OBLIGATIONS  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Section 4.01. "Demand Date" has the meaning set forth in Section 4.02. "DOE" has the meaning set forth in the introductory paragraph hereof. "Dollars" or "" means the lawful...

398

Critical point analysis of phase envelope diagram  

SciTech Connect

Phase diagram or phase envelope is a relation between temperature and pressure that shows the condition of equilibria between the different phases of chemical compounds, mixture of compounds, and solutions. Phase diagram is an important issue in chemical thermodynamics and hydrocarbon reservoir. It is very useful for process simulation, hydrocarbon reactor design, and petroleum engineering studies. It is constructed from the bubble line, dew line, and critical point. Bubble line and dew line are composed of bubble points and dew points, respectively. Bubble point is the first point at which the gas is formed when a liquid is heated. Meanwhile, dew point is the first point where the liquid is formed when the gas is cooled. Critical point is the point where all of the properties of gases and liquids are equal, such as temperature, pressure, amount of substance, and others. Critical point is very useful in fuel processing and dissolution of certain chemicals. Here in this paper, we will show the critical point analytically. Then, it will be compared with numerical calculations of Peng-Robinson equation by using Newton-Raphson method. As case studies, several hydrocarbon mixtures are simulated using by Matlab.

Soetikno, Darmadi; Siagian, Ucok W. R. [Department of Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia); Kusdiantara, Rudy, E-mail: rkusdiantara@s.itb.ac.id; Puspita, Dila, E-mail: rkusdiantara@s.itb.ac.id; Sidarto, Kuntjoro A., E-mail: rkusdiantara@s.itb.ac.id; Soewono, Edy; Gunawan, Agus Y. [Department of Mathematics, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132 (Indonesia)

2014-03-24T23:59:59.000Z

399

AMF Deployment, Point Reyes National Seashore, California  

NLE Websites -- All DOE Office Websites (Extended Search)

California California Point Reyes Deployment AMF Home Point Reyes Home Data Plots and Baseline Instruments Experiment Planning MASRAD Proposal Abstract and Related Campaigns Outreach Posters Climate Research at Point Reyes National Seashore (horizontal) Climate Research at Point Reyes National Seashore (vertical) News Campaign Images AMF Deployment, Point Reyes National Seashore, California Point Reyes National Seashore, on the California coast north of San Francisco. Shelters: 38° 5' 30.51" N, 122° 57' 19.90" W Instrument Field: 38° 5' 27.6" N, 122° 57' 25.80" W Altitude: 8 meters Point Reyes National Seashore, on the California coast north of San Francisco, was the location of the first deployment of the DOE's Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF). The ARM

400

Analysis of Crossover Points for MVLT Superclass  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of Crossover Points for MVLT Superclass of Crossover Points for MVLT Superclass 58761v1 Page 1 White Paper - Analysis of Cross-Over Points for Grain-Oriented Electrical Steel and Amorphous Ribbon for the MVLT Superclass Cross-over points for the Medium Voltage Liquid Filled distribution transformer super-class have been analyzed based on the Engineering Analysis provided by the Department of Energy. For the purpose of this white paper, a cross-over point is defined as where the low-cost curve fitted to the point cloud for all of the transformers with M-3 grain-oriented electrical steel core designs crosses the low-cost curve fitted to the point cloud for all of the transformers with amorphous (SA1) core designs. This analysis is based on the data from the DOE Engineering Analysis. It excludes uncorroborated data

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Microsoft PowerPoint - TemplatesrnlTechBriefp1.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

U.S. patent 6,808,148 U.S. patent 6,808,148  Canadian patent 2,526,020  enables mobile use of plasma screens  protects expensive equipment  prolongs equipment life Mounting system eliminates vibration and dampens shock Engineers at the Savannah River National Laboratory (SRNL) have invented a new mounting system for flat panel video technology. The plasma screen floating mount is a mounting system proven to eliminate vibration and dampen shock for mobile uses of plasma screens, thereby eliminating interference to the picture on the screen or damage to costly equipment. SRNL-L9100-2009-00190-1 techbriefs How it works The lightweight frame wraps around the periphery of the plasma display screen. The frame is designed to allow the display to "float" within a three-dimensional space.

402

Spectral Functions of Singular Operators  

E-Print Network (OSTI)

The asymptotic expansion of the heat-kernel for small values of its argument has been studied in many different cases and has been applied to 1-loop calculations in Quantum Field Theory. In this thesis we consider this asymptotic behavior for certain singular differential operators which can be related to quantum fields on manifolds with conical singularities. Our main result is that, due to the existence of this singularity and of infinitely many boundary conditions of physical relevance related to the admissible behavior of the fields on the singular point, the heat-kernel has an "unusual" asymptotic expansion. We describe examples where the heat-kernel admits an asymptotic expansion in powers of its argument whose exponents depend on "external" parameters. As far as we know, this kind of asymptotics had not been found and therefore its physical consequences are still unexplored.

Pablo Pisani

2014-10-28T23:59:59.000Z

403

Requirements for boom lift operations is to tether an adjustable 6' lanyard to 3ft while operating a boom lift  

NLE Websites -- All DOE Office Websites (Extended Search)

Fall Protection Requirements for Boom Lift Fall Protection Requirements for Boom Lift 2010 Requirements for boom lift operations is to tether an adjustable 6' lanyard to 3ft while operating a boom lift. While operating a JLG Aerial lift. LBNL best practices requirements for boom lift Operations is to tether an adjustable 6' lanyard to 3ft while operating a boom lift. January 14, 2009 OSHA Letter # 20070823-7896 - Whether a manufacturer stipulated minimum anchor point elevation of 18½ feet precludes the use of a shock absorbing lanyard in an aerial lift. (See attached Letter) An adjustable 6' lanyard to 3ft will keep the operator from protected from being ejected out of the lift. If a non-adjustable 6ft lanyard is used for fall restraint it is required that fall distance from the anchor point must be at a height not under

404

Schrdinger operators on armchair nanotubes. I  

E-Print Network (OSTI)

We consider the Schr\\"odinger operator with a periodic potential on quasi-1D models of armchair single-wall nanotubes. The spectrum of this operator consists of an absolutely continuous part (intervals separated by gaps) plus an infinite number of eigenvalues with infinite multiplicity. We describe all eigenfunctions with the same eigenvalue. We define a Lyapunov function, which is analytic on some Riemann surface. On each sheet, the Lyapunov function has the same properties as in the scalar case, but it has branch points, which we call resonances. In example we show the existence of real and complex resonances for some specific potentials.

Andrey Badanin; Jochen Brning; Evgeny Korotyaev; Igor Lobanov

2007-07-26T23:59:59.000Z

405

Operations Cost Allocation Project  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Consolidation Project Operations Consolidation Project Operations Consolidation Project (OCP) Cost Allocation Presentation - September 20, 2011 OCP Cost Allocation Customer Presentation List of Acronyms OCP Cost Allocation Spreadsheets OCP Cost Allocation Customer Presentation - Questions and Answers - September 19 - 20, 2011 Additional Questions and Answers Customer Comments/Questions and Answers: Arizona Municipal Power Users Association Arizona Power Authority Central Arizona Project Colorado River Commission Colorado River Energy Distributors Association City of Gilbert, AZ Irrigation and Electrical Districts Association of Arizona Town of Marana, AZ City of Mesa, AZ Town of Wickenburg, AZ Western's Final Decision Regarding the Long-Term Cost Allocation Methodology for Operations Staff Costs

406

Business Operations Contacts  

Office of Energy Efficiency and Renewable Energy (EERE)

If you have a question for the Office of Business Operations, you can use this contact information to reach the office you're interested in:

407

Semicausal operations are semilocalizable  

E-Print Network (OSTI)

We prove a conjecture by DiVincenzo, which in the terminology of Preskill et al. [quant-ph/0102043] states that ``semicausal operations are semilocalizable''. That is, we show that any operation on the combined system of Alice and Bob, which does not allow Bob to send messages to Alice, can be represented as an operation by Alice, transmitting a quantum particle to Bob, and a local operation by Bob. The proof is based on the uniqueness of the Stinespring representation for a completely positive map. We sketch some of the problems in transferring these concepts to the context of relativistic quantum field theory.

Eggeling, T; Werner, R F

2002-01-01T23:59:59.000Z

408

Fermilab | Tevatron | Tevatron Operation  

NLE Websites -- All DOE Office Websites (Extended Search)

Operation Fermilab's Accelerator Complex Fermilab's Accelerator Complex has 10 accelerators. The Tevatron, which shuts down on Sept. 30, is one of those accelerators. The...

409

Pipeline Operations Program (Louisiana)  

Energy.gov (U.S. Department of Energy (DOE))

The Pipeline Operations Program regulates the construction, acquisition, abandonment and interconnection of natural gas pipelines, as well as, the transportation and use of natural gas supplies.

410

Richland Operations Office  

NLE Websites -- All DOE Office Websites (Extended Search)

treatment and the data should be available by the end of next week. * Status Conduct of Operations There have been several small incidents recently where observations of work...

411

Challenge # 3 ? Operational Issues  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Potential for a renewable heating oil substitution Challenge 3 - Operational Issues What are the most significant barriers to overcome in each market segment? Fernando Preto The...

412

Extremal Three-point Correlators in Kerr/CFT  

E-Print Network (OSTI)

We compute three-point correlation functions in the near-extremal, near-horizon region of a Kerr black hole, and compare to the corresponding finite-temperature conformal field theory correlators. For simplicity, we focus on scalar fields dual to operators ${\\cal O}_h$ whose conformal dimensions obey $h_3=h_1+h_2$, which we name \\emph{extremal} in analogy with the classic $AdS_5 \\times S^5$ three-point function in the literature. For such extremal correlators we find perfect agreement with the conformal field theory side, provided that the coupling of the cubic interaction contains a vanishing prefactor $\\propto h_3-h_1-h_2$. In fact, the bulk three-point function integral for such extremal correlators diverges as $1/(h_3-h_1-h_2)$. This behavior is analogous to what was found in the context of extremal AdS/CFT three-point correlators. As in AdS/CFT our correlation function can nevertheless be computed via analytic continuation from the non-extremal case.

Melanie Becker; Sera Cremonini; Waldemar Schulgin

2010-04-07T23:59:59.000Z

413

Topological Invariants in Point Group Symmetric Photonic Topological Insulators  

E-Print Network (OSTI)

We proposed a group-theory method to calculate topological invariant in bi-isotropic photonic crystals invariant under crystallographic point group symmetries. Spin Chern number has been evaluated by the eigenvalues of rotation operators at high symmetry k-points after the pseudo-spin polarized fields are retrieved. Topological characters of photonic edge states and photonic band gaps can be well predicted by total spin Chern number. Nontrivial phase transition is found in large magnetoelectric coupling due to the jump of total spin Chern number. Light transport is also issued at the {\\epsilon}/{\\mu} mismatching boundary between air and the bi-isotropic photonic crystal. This finding presents the relationship between group symmetry and photonic topological systems, which enables the design of photonic nontrivial states in a rational manner.

Chen, Xiao-Dong; Chen, Wen-Jie; Wang, Jia-Rong; Dong, Jian-Wen

2014-01-01T23:59:59.000Z

414

Cloud point determination using a thickness shear mode resonator  

SciTech Connect

Crude oils and crude oil products contain substantial amounts of petroleum waxes, consisting of a distribution of high molecular weight hydrocarbons. These waxes or paraffins have limited solubility in oil and tend to precipitate out at a temperature determined by the concentration and constituents of the wax. Precipitation and deposition of wax results in narrowing of pipelines, making crude oil recovery difficult. A parameter of practical importance is the wax precipitation temperature, traditionally known as the cloudpoint, at which visible crystallization occurs. Deposition problems arise in oil field operations at or below this temperature. Several techniques can be used to determine the cloud point: (1) visual observation, (2) viscosity measurement, (3) differential thermal analysis, and (4) pulsed nuclear magnetic resonance. This report describes a method for determination of cloud point with the use of a thickness shear mode resonator.

Spates, J.J. [Ktech Corp., Albuquerque, NM (United States); Martin, S.J.; Mansure, A.J. [Sandia National Lab., Albuquerque, NM (United States); Germer, J.W. [Petrolite Corp., St. Louis, MO (United States)

1995-12-31T23:59:59.000Z

415

End Points Management | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Management Management End Points Management The policy of the EM is that a formal project management approach be used for the planning, managing, and conducting of its projects. Specifying and achieving end points is a systematic, engineering way of proceeding from an existing condition to a stated desired final set of conditions in which the facility is safe and can be economically monitored and maintained. An end point method is a way to translate broad mission statements to explicit goals that are readily understood by engineers and craft personnel who do the work. (It should be recognized that while end points as addressed here are for a final set of conditions for deactivation, they may represent an interim point for the overall EM cleanup goal.) End Points Management

416

Extend the Operating Life of Your Motor  

Energy.gov (U.S. Department of Energy (DOE))

Certain components of motors degrade with time and operating stress. Electrical insulation weakens over time with exposure to voltage unbalance, over and undervoltage, voltage disturbances, and temperature. Contact between moving surfaces causes wear. Wear is affected by dirt, moisture, and corrosive fumes and is greatly accelerated when lubricant is misapplied, becomes overheated or contaminated, or is not replaced at regular intervals. When any components are degraded beyond the point of economical repair or replacement, the motors economic life ends.

417

[0268] First Galley Proofs MULTIPLICITIES, BOUNDARY POINTS,  

E-Print Network (OSTI)

, multiplicity, extreme point, sharp point, boundary point. c Ð , Zagreb Paper OaM-0268 1 #12;2 W.S. CHEUNG NUMERICAL RANGES WAI-SHUN CHEUNG, XUHUA LIU AND TIN-YAU TAM (Communicated by C.-K. Li) Abstract, XUHUA LIU AND T.Y. TAM Given W(A), Embry [8] introduced M = M (A) := {x Cn : x Ax = x x}. In general

Tam, Tin-Yau

418

Prediction of Cloud Points of Biodiesel  

Science Journals Connector (OSTI)

Prediction of Cloud Points of Biodiesel ... Despite the lack of accurate data for the cloud points of biodiesel, the results obtained here allow for an adequate evaluation of the model proposed, showing that it can produce good predictions of the cloud points of mixtures of fatty acid esters. ... Because of its environmental benefits, resulting from a decrease in CO2 emissions, its origin from renewable resources, and the increase in crude oil costs, biodiesel is become increasingly attractive. ...

J. C. A. Lopes; L. Boros; M. A. Krhenbhl; A. J. A. Meirelles; J. L. Daridon; J. Pauly; I. M. Marrucho; J. A. P. Coutinho

2007-10-09T23:59:59.000Z

419

.JETEQUIPMENT &TOOLS OPERATOR'S MANUAL  

E-Print Network (OSTI)

.JETEQUIPMENT &TOOLS OPERATOR'S MANUAL JDP-14J/14M/17M/14JF/14 MF/17MF DRILL PRESS Stock No. .JET-6000 FAX[253] 939-8001 #12;OPERATINGINSTRUCTIONS Before operating the unit, please read this manual workpiece. 7. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for the best and safest performance

Kleinfeld, David

420

Building Green in Greensburg: Prairie Pointe Townhomes  

Office of Energy Efficiency and Renewable Energy (EERE)

This poster highlights energy efficiency, renewable energy, and sustainable features of the high-performing Prairie Pointe Townhomes in Greensburg, Kansas.

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Homework/Program #1 Solutions a) ( 1 point for each Hello*.java files (3 points), 1 point for each Hello*.class file (3 points)  

E-Print Network (OSTI)

Homework/Program #1 Solutions 1. a) ( 1 point for each Hello*.java files (3 points), 1 point for each Hello*.class file (3 points) -rw-r--r--. 1 cs11xyz cs11sxyz 718 Oct 2 21:47 Hello2.class -rw-r--r--. 1 cs11xyz cs11sxyz 938 Oct 2 21:22 Hello2.java -rw-r--r--. 1 cs11xyz cs11sxyz 427 Oct 2 21:47 Hello

Papadopoulos, Philip M.

422

Inexact and accelerated proximal point algorithms  

E-Print Network (OSTI)

Aug 10, 2011 ... Abstract: We present inexact accelerated proximal point algorithms for minimizing a proper lower semicon- tinuous and convex function.

Saverio Salzo

2011-08-10T23:59:59.000Z

423

Operability and Emissions from a Medium-Duty Fleet Operating...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Operability and Emissions from a Medium-Duty Fleet Operating with GTL Fuel and Catalyzed DPFs Operability and Emissions from a Medium-Duty Fleet Operating with GTL Fuel and...

424

Hanford Site air operating permit application  

SciTech Connect

The Clean Air Act Amendments of 1990, which amended the Federal Clean Air Act of 1977, required that the US Environmental Protection Agency develop a national Air Operating Permit Program, which in turn would require each state to develop an Air Operating Permit Program to identify all sources of ``regulated`` pollutants. Regulated pollutants include ``criteria`` pollutants (oxides of nitrogen, sulfur oxides, total suspended particulates, carbon monoxide, particulate matter greater than 10 micron, lead) plus 189 other ``Hazardous`` Air Pollutants. The Hanford Site, owned by the US Government and operated by the US Department of Energy, Richland Operations Office, is located in southcentral Washington State and covers 560 square miles of semi-arid shrub and grasslands located just north of the confluence of the Snake and Yakima Rivers with the Columbia River. This land, with restricted public access, provides a buffer for the smaller areas historically used for the production of nuclear materials, waste storage, and waste disposal. About 6 percent of the land area has been disturbed and is actively used. The Hanford Site Air Operating Permit Application consists of more than 1,100 sources and in excess of 300 emission points. Before January 1995, the maintenance and operations contractor and the environmental restoration contractor for the US Department of Energy completed an air emission inventory on the Hanford Site. The inventory has been entered into a database so that the sources and emission points can be tracked and updated information readily can be retrieved. The Hanford Site Air Operating Permit Application contains information current as of April 19, 1995.

NONE

1995-05-01T23:59:59.000Z

425

Electromagnetic nucleon form factors in instant and point form  

E-Print Network (OSTI)

We present a study of the electromagnetic structure of the nucleons with constituent quark models in the framework of relativistic quantum mechanics. In particular, we address the construction of spectator-model currents in the instant and point forms. Corresponding results for the elastic nucleon electromagnetic form factors as well as charge radii and magnetic moments are presented. We also compare results obtained by different realistic nucleon wave functions stemming from alternative constituent quark models. Finally, we discuss the theoretical uncertainties that reside in the construction of spectator-model transition operators.

T. Melde; K. Berger; L. Canton; W. Plessas; R. F. Wagenbrunn

2007-09-30T23:59:59.000Z

426

Improving Model-Based Gas Turbine Fault Diagnosis Using Multi-Operating Point Method  

Science Journals Connector (OSTI)

A comprehensive gas turbine fault diagnosis system has been designed using a full nonlinear simulator developed in Turbotec company for the V94.2 industrial gas turbine manufactured by Siemens AG. The methods used for detection and isolation of faulty ... Keywords: monitoring, fault diagnosis, extended Kalman filter, gas turbine, simulator

Amin Salar; Seyed Mehrdad Hosseini; Behnam Rezaei Zangmolk; Ali Khaki Sedigh

2010-11-01T23:59:59.000Z

427

Microsoft PowerPoint - ATF Users Meeting 2002 atf_operation.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

and carried out exploratory R&D: 1. TW CO 2 Amplifier starts to serve users. 2. Permanent magnets for small beam production. 3. New electron beam spectrometer. 4. New linac...

428

15/05/12 1:58 PMFloating sensor networks -Hack a Day Page 1 of 8http://hackaday.com/2012/05/15/floating-sensor-networks/  

E-Print Network (OSTI)

15/05/12 1:58 PMFloating sensor networks - Hack a Day Page 1 of 8http://hackaday.com/2012: robots hacks These cool looking little bots are part of a fleet of floating water sensors built! tall bots can steer with the help of their twin props Ads by Google Speed Sensor Electronics Hack

429

16/05/12 3:58 PMFloating robots use GPS-enabled smartphones to track water flow Page 1 of 5http://www.spacedaily.com/reports/Floating_robots_use_GPS_enabled_smartphones_to_track_water_flow_999.html  

E-Print Network (OSTI)

can shed light on processes that are influenced by how water moves, such as the spread of pollutants, the migration of salmon or how salt and fresh water . Buy Advertising Editorial Enquiries GPS Fleet Tracking See/reports/Floating_robots_use_GPS_enabled_smartphones_to_track_water_flow_999.html spread of pollutants

430

Form drag at Three Tree Point  

E-Print Network (OSTI)

form drag with bottom pressure sensors #12;Oscillatory dynamics tidal energy converted to internal waves, eddies and mixing no tidally averaged work done on system slack tide: background tilt flood & ebb Puget Sound, WA Point Three Tree Pressure sensors (PPODs) at Three Tree Point (TTP) PPODs #12;PPOD

Warner, Sally

431

The Control Point Policy Stanley B. Gershwin  

E-Print Network (OSTI)

://web.mit.edu/manuf-sys Massachusetts Institute of Technology Spring, 2012 The Control Point Policy 1/33 Copyright c 2012 Stanley B-time calculation. The purpose of real-time scheduling in a factory is to make decisions in response to random failures, change in demand, etc. The Control Point Policy 4/33 Copyright c 2012 Stanley B. Gershwin. All

Gershwin, Stanley B.

432

Multiple Point Schemes for Corank 1 Maps  

Science Journals Connector (OSTI)

......Multiple Point Schemes for Corank 1 Maps Washington Luiz Marar David Mond...MULTIPLE POINT SCHEMES FOR CORANK 1 MAPS WASHINGTON LUIZ MARAR AND DAVID...1). Finally, denote the map Cn "1+fc -> C*~m defined...g:(Cn -1+k ,0) *C\\gis G-invariant}. Then

Washington Luiz Marar; David Mond

1989-06-01T23:59:59.000Z

433

Analysis of the parallel distinguished point tradeoff  

Science Journals Connector (OSTI)

Cryptanalytic time memory tradeoff algorithms are tools for quickly inverting one-way functions and many consider the rainbow table method to be the most efficient tradeoff algorithm. However, it was recently announced, mostly based on experiments, that ... Keywords: distinguished point, parallel distinguished point, rainbow table, time memory tradeoff

Jin Hong; Ga Won Lee; Daegun Ma

2011-12-01T23:59:59.000Z

434

Point-to-curve ray tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

435

Point-to-curve Ray Tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

436

Innovative Resin Transfer and Disposition at Indian Point Unit 1  

SciTech Connect

A number of sites have both operating and shuttered nuclear facilities. Reducing dose to the caretakers can have beneficial effects for other site personnel who may work or pass near the shuttered facility. Furthermore, disposition of waste can have a positive effect on NRC required regular reporting of, and plans for the disposition of on-site wastes. Entergy's Indian Point Energy Center recently reduced the on-site curie load by working with RWE NUKEM and WMG, Inc. to innovatively free and ship nearly 1,000 cubic feet and nearly 600 curies of 30 year old resin and sludge from Unit 1. Old drawings, operations logs, were consulted and transfer lines were remotely checked. The tank selection sequence was primarily based on dose rates. System modifications to facilitate resin transfer were made on the lowest dose tanks first to gain current operating experience. Resin transfers were performed in accordance with the procedures developed, into waiting cask with appropriate waste containers. Decomposed resin of varying consistency could clog discharge lines and operational changes were made to mitigate against flow interruptions. Hydrogen buildup in the tanks was carefully addressed while solidified resin remains a challenge to be overcome. (authors)

Posivak, E.J.; Freitag, A.A.; Miller, R.J. [WMG, Inc., Peekskill, NY (United States)

2007-07-01T23:59:59.000Z

437

Interaction between Injection Points during Hydraulic Fracturing  

E-Print Network (OSTI)

We present a model of the hydraulic fracturing of heterogeneous poroelastic media. The formalism is an effective continuum model that captures the coupled dynamics of the fluid pressure and the fractured rock matrix and models both the tensile and shear failure of the rock. As an application of the formalism, we study the geomechanical stress interaction between two injection points during hydraulic fracturing (hydrofracking) and how this interaction influences the fracturing process. For injection points that are separated by less than a critical correlation length, we find that the fracturing process around each point is strongly correlated with the position of the neighboring point. The magnitude of the correlation length depends on the degree of heterogeneity of the rock and is on the order of 30-45 m for rocks with low permeabilities. In the strongly correlated regime, we predict a novel effective fracture-force that attracts the fractures toward the neighboring injection point.

Hals, Kjetil M D

2012-01-01T23:59:59.000Z

438

New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet), NREL Highlights, Research & Development, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

at the National Renewable Energy Laboratory at the National Renewable Energy Laboratory (NREL) develop a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology. Currently, most offshore wind turbines are installed in shallow water, less than 30 meters deep, on bottom-mounted substructures. But these substructures are not

439

Model Development and Loads Analysis of an Offshore Wind Turbine on a Tension Leg Platform with a Comparison to Other Floating Turbine Concepts: April 2009  

SciTech Connect

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. The report also provides a description of the development process of the TLP model. The model has been verified via comparisons to frequency-domain calculations. Important differences have been identified between the frequency-domain and time-domain simulations, and have generated implications for the conceptual design process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the IEC 61400-3 offshore wind turbine design standard was performed with the verified TLP model. This report compares the loads for the wind turbine on the TLP to those of an equivalent land-based turbine. Major instabilities for the TLP are identified and described.

Matha, D.

2010-02-01T23:59:59.000Z

440

Non-invasive in situ plasma monitoring of reactive gases using the floating harmonic method for inductively coupled plasma etching application  

SciTech Connect

The floating harmonic method was developed for in situ plasma diagnostics of allowing real time measurement of electron temperature (T{sub e}) and ion flux (J{sub ion}) without contamination of the probe from surface modification by reactive species. In this study, this novel non-invasive diagnostic system was studied to characterize inductively coupled plasma of reactive gases monitoring T{sub e} and J{sub ion} for investigating the optimum plasma etching conditions and controlling of the real-time plasma surface reaction in the range of 200-900 W source power, 10-100 W bias power, and 3-15 mTorr chamber pressure, respectively.

Lee, J. H.; Kim, M. J. [Department of Materials Science and Engineering, University of Texas at Dallas, Texas 75080 (United States); Yoon, Y. S. [Department of Electrical Engineering, University of Texas at Dallas, Texas 75080 (United States)

2013-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

An Integrated Approach to Building Operation  

NLE Websites -- All DOE Office Websites (Extended Search)

An Integrated Approach to Building Operation An Integrated Approach to Building Operation Speaker(s): David E. Claridge Date: April 16, 1999 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Richard Sextro Buildings systems have historically been over-sized to minimize contractor/designer call-backs. It is widely recognized that this over-sizing leads to excessive chiller and boiler cycling with an attendant reduction in efficiency. The same design approach routinely leads to reduced efficiencies throughout the building systems. The same mentality pervades the operation of building systems. This customarily increases utility costs by at least 20%. This presentation will present specific examples of the deleterious effects of the "more is better" approach by examining the impact of too much differential pressure across a control

442

Operations Research Analysts  

U.S. Energy Information Administration (EIA) Indexed Site

Operations Research Analysts Operations Research Analysts The U.S. Energy Information Administration (EIA) within the Department of Energy has forged a world-class information program that stresses quality, teamwork, and employee growth. In support of our program, we offer a variety of profes- sional positions, including the Operations Research Analyst, whose work is associated with the development and main- tenance of energy modeling systems. Responsibilities: Operations Research Analysts perform or participate in one or more of the following important functions: * Develop, design, perform, and document a broad range of analyses and studies involving current and projected energy pricing, production, supply, and distribution, and consumption * Using computer programming skills and knowledge of energy industries and markets, designs and develops math-

443

Field Operations Program  

NLE Websites -- All DOE Office Websites (Extended Search)

688 688 May 1999 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort D. V. O'Hara L. A. Slezak DOE/ID-10688 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort 1 D. V. O'Hara 2 L. A. Slezak 2 Published May 1999 Idaho National Engineering and Environmental Laboratory Automotive Systems and Technology Department Lockheed Martin Idaho Technologies Company Idaho Falls, Idaho 83415 Prepared for the U.S. Department of Energy Idaho Operations Office 1 INEEL/Lockheed Martin Idaho Technologies Co. 2 U.S. Department of Energy iii EXECUTIVE SUMMARY The Field Operations Program is an electric vehicle testing and evaluation program sponsored by U.S. Department of Energy and managed by the Idaho National Engineering and Environmental

444

Operational Area Monitoring Plan  

Office of Legacy Management (LM)

' ' SECTION 11.7B Operational Area Monitoring Plan for the Long -Term H yd rol og ical M o n i to ri ng - Program Off The Nevada Test Site S . C. Black Reynolds Electrical & Engineering, Co. and W. G. Phillips, G. G. Martin, D. J. Chaloud, C. A. Fontana, and 0. G. Easterly Environmental Monitoring Systems Laboratory U. S. Environmental Protection Agency October 23, 1991 FOREWORD This is one of a series of Operational Area Monitoring Plans that comprise the overall Environmental Monitoring Plan for the DOE Field Office, Nevada (DOEINV) nuclear and non- nuclear testing activities associated with the Nevada Test Site (NTS). These Operational Area Monitoring Plans are prepared by various DOE support contractors, NTS user organizations, and federal or state agencies supporting DOE NTS operations. These plans and the parent

445

Operations Research Analyst  

Energy.gov (U.S. Department of Energy (DOE))

A successful candidate in this position will serve as an Operations Research Analyst assigned to CEPE, in Washington, DC and is responsible for conducting independent cost and schedule estimates of...

446

Oak Ridge Operations.  

Office of Legacy Management (LM)

4s - 22 Department of Energy Oak Ridge Operations. SI9J>liB P.O. Box 2001 Oak Ridge. Tennessee 37831-8723 October 21, 1994 Mr. Charles A. Duritsa Regional Director...

447

Operating Oak Ridge's "Calutrons"  

NLE Websites -- All DOE Office Websites (Extended Search)

RIDGE'S CALUTRONS: In this oral history, Theodore Rockwell talks about the Y-12 plant at Oak Ridge where the calutrons were operated by young women, many just out of high school....

448

Oak Ridge Operations YTO  

Office of Legacy Management (LM)

ed States Government Department of Energy Oak Ridge Operations YTO r , , EM-93:Hartman I - CATEGORICAL EXCLUSION (CX) DETERMINATION - RMOVAL ACTION AT M E SPRINGDALE r SITE I -a...

449

Protection Program Operations  

Directives, Delegations, and Requirements

This Order establishes requirements for the management and operation of the Department of Energy (DOE) Federal Protective Forces (FPF), Contractor Protective Forces (CPF), and the Physical Security of property and personnel under the cognizance of DOE.

2014-10-14T23:59:59.000Z

450

Operations Security Program  

Directives, Delegations, and Requirements

To establish policies, responsibilities and authorities for implementing and sustaining the Department of Energy (DOE) Operations Security (OPSEC) Program. Cancels DOE O 5632.3B. Canceled by DOE O 471.2 of 9-28-1995.

1992-04-30T23:59:59.000Z

451

Operations and Maintenance  

Energy.gov (U.S. Department of Energy (DOE))

Lower operations and maintenance (O&M) costs are critical to reducing a solar system's lifecycle cost of ownership. O&M costs are influenced by up-front investments in design, engineering,...

452

Operating plan FY 1998  

SciTech Connect

This document is the first edition of Argonne`s new Operating Plan. The Operating Plan complements the strategic planning in the Laboratory`s Institutional Plan by focusing on activities that are being pursued in the immediate fiscal year, FY 1998. It reflects planning that has been done to date, and it will serve in the future as a resource and a benchmark for understanding the Laboratory`s performance. The heart of the Institutional Plan is the set of major research initiatives that the Laboratory is proposing to implement in future years. In contrast, this Operating Plan focuses on Argonne`s ongoing R&D programs, along with cost-saving measures and other improvements being implemented in Laboratory support operations.

NONE

1997-10-01T23:59:59.000Z

453

CH Packaging Operations Manual  

SciTech Connect

This procedure provides instructions for assembling the CH Packaging Drum payload assembly, Standard Waste Box (SWB) assembly, Abnormal Operations and ICV and OCV Preshipment Leakage Rate Tests on the packaging seals, using a nondestructive Helium (He) Leak Test.

Washington TRU Solutions LLC

2005-06-13T23:59:59.000Z

454

Cogeneration Operational Issues  

E-Print Network (OSTI)

important, however, are the operational Issues which impact the utility and the cogenerator. This paper addresses the utility perspective in regard to possible impact of cogeneration systems on utility service to other customer, safety and substation...

Williams, M.

455

Idaho Operations Office  

NLE Websites -- All DOE Office Websites (Extended Search)

adverse impacts 40 CFR 1508.27 (b)(l): The selected action establishes a capability to conduct outdoor linac operations at higher power and greater standoff distances. The SOX...

456

Crane Operation Training  

NLE Websites -- All DOE Office Websites (Extended Search)

remove power from the crane and inform the facility management or CAMD safety. Place a lockout tag on the remote control unit. All CAMD crane operations are conducted using the...

457

Plant Operations Executive Director  

E-Print Network (OSTI)

Campus North Campus Recycling Operations Materials Human Resources Payroll Misc Svs Special Projects Planning Spray Shop Glass Shop Upholstery Shop Plant IT Painting Services G. Weincouff Human Resources Business Services Estimating Shutdown Coordination Scheduling L. Rastique Human Resources 67398 M

Awtar, Shorya

458

Corporate Operating Experience Program  

Energy.gov (U.S. Department of Energy (DOE))

The DOE Corporate Operating Experience Program helps to prevent the recurrence of significant adverse events/trends by sharing performance information, lessons learned and good practices across the DOE complex.

459

Essays on Retail Operations  

E-Print Network (OSTI)

-fraction and all-or-none inspection. We further perform a case study to identify deficiencies of store operating practices given different risk preferences. Our findings provide practical guidelines for managers to design cost-efficient inspection policy...

Chuang, Hao-Chun

2013-03-12T23:59:59.000Z

460

Transmission and Storage Operations  

Energy Savers (EERE)

to see minimal to none in static or dynamic mode) - Rates are dependent on size, mechanical wear and operating pressures * PM * PdM 5 Methane Release Reduction Can the gas be...

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Development of Operation System  

Science Journals Connector (OSTI)

We are gradually developing a total hospital information system known as GUNMAS (Gunma University Network for Medical-Hospital- Information Archiving System). an operation system is also being developed as part o...

Seiji Kato M.D.; Yasuharu Kitani M.D.

1992-01-01T23:59:59.000Z

462

Pipeline operation and safety  

SciTech Connect

Safety is central to the prosperity of the pipeline industry and the need to maintain high standards of the safety at all times is of paramount importance. Therefore, a primary concern of pipeline operator is adequate supervision and the control of the operation of pipelines. Clearly defined codes of practice, standards and maintenance schedules are necessary if protection is to be afforded to the pipeline system employees, the public at large, and the environment.

Tadors, M.K. [Petroleum Pipelines Co., Cairo (Egypt)

1996-12-31T23:59:59.000Z

463

Potential alteration of fjordal circulation due to a large floating structureNumerical investigation with application to Hood Canal basin in Puget Sound  

SciTech Connect

Circulation in typical fjords is characterized by a shallow brackish layer at the surface over a deep long and narrow saltwater column. This surface layer is responsible for the outflow of water from the fjord, is easily disrupted by external forces, such as wind, and is influenced by freshwater inflow. In this paper, we postulate that the stability of fjordal circulation may also be vulnerable to impacts from anthropogenic alterations, such as floating structures, that could constrict the mixing and transport in the upper layers of the water column. The potential for alteration of circulation in Hood Canal, a silled-fjord located inside Puget Sound, Washington, has been examined. Using classical analytical treatments along the lines formulated by Hansen and Rattray [1965], Rattray [1967], Dyer [1973] and more recently, MacCready [2004], we develop a solution applicable to a range of estuary classifications varying from a partially mixed estuary regime to classical fjord conditions. Both estuary types exist in the Puget Sound system, and we compare our analytical solution with observed data. The analysis is based on an exponential variation of eddy viscosity with depth, and it has been extended further with modifications of the free surface boundary conditions to develop a solution representing the presence of a floating bridge at the estuary/fjord entrance. The model results show that tidally averaged mean circulation under the influence of such a constraint could reduce by as much as 30 to 50 percent. The overall water quality of fjords and narrow estuaries is dependent on net circulation and flushing. A potential decrease in residual flow or a corresponding increase in residence time of this magnitude merits further study.

Khangaonkar, Tarang; Wang, Taiping

2013-01-02T23:59:59.000Z

464

Gambit-C, a portable implementation of Scheme  

E-Print Network (OSTI)

9.2 IEEE floating point arithmetic. To better conform to IEEE floating point arithmetic the standard numeric tower is extended with these special inexact reals:.

465

Distinguished Mathematics Professors Named  

E-Print Network (OSTI)

Thus, a successful system needs to use floating-point arithmetic for testing whether answers ... transformed into the floating-point number nearest to .1, which is.

2005-06-02T23:59:59.000Z

466

Parallel solver for semidefinite programming problem having sparse ...  

E-Print Network (OSTI)

Since the computation cost for floating-point multiplications is generally greater ... is approximately proportional to the number of floating-point multiplications.

2010-09-14T23:59:59.000Z

467

4423.ps  

E-Print Network (OSTI)

tation in floating point arithmetic can cause numerical issues. This is a ... In addition, they provide a floating point implementation of their method in order.

2014-10-08T23:59:59.000Z

468

Code verification by static analysis: a mathematical programming ...  

E-Print Network (OSTI)

In the remaining case (floating-point non-affine arithmetic) we can only provide an ... with integer affine arithmetic, and approximate solutions for floating point...

2009-09-24T23:59:59.000Z

469

The Gambit Scheme manual.  

E-Print Network (OSTI)

9.2 IEEE floating point arithmetic. To better conform to IEEE floating point arithmetic the standard numeric tower is extended with these special inexact reals: +inf.

2008-01-22T23:59:59.000Z

470

Extremal Correlator of Three Vertex Operators for Circular Winding Strings in AdS5xS5  

E-Print Network (OSTI)

We study a three-point correlator of the three heavy vertex operators representing the circular winding string states which are point-like in AdS_5 and rotating with two spins and two winding numbers in S^5. We restrict ourselves to the case that two of the three vertex operators are located at the same point. We evaluate semiclassically the specific three-point correlator on a stationary splitting string trajectory which is mapped to the complex plane with three punctures. It becomes an extremal and 4d conformal invariant three-point correlator on the boundary. The marginality condition of the vertex operator is discussed.

Shijong Ryang

2011-09-15T23:59:59.000Z

471

Microsoft PowerPoint - Campbell-1.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

ARP Startup and Operations Summary ARP Startup and Operations Summary Seth Campbell ARP/MCU Process Engineer Washington Savannah River Co. May 20, 2009 Waste Management Technical Exchange LWO-LWE-2009-00132 2 ARP Startup and Operations Summary Agenda Mission Process Overview Equipment Testing Startup Processing Results Issues & Resolution Examples Enhancement Summary 3 ARP Startup and Operations Summary ARP Mission Process dissolved salt solution for disposal - Receive salt solution from SRS Tanks (≤ 1.1 Ci/gal) - Remove soluble Sr and Pu via Monosodium Titanate - Filter to remove sludge & MST solids Provide operational experience for SWPF - Equipment reliability - Process chemistry - Lessons learned 4 ARP Startup and Operations Summary Process Overview Receive waste from underground storage tank

472

Microsoft PowerPoint - Campbell-2.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

MCU Startup and Operations Summary MCU Startup and Operations Summary Seth Campbell ARP/MCU Process Engineer Washington Savannah River Co. May 20, 2009 Waste Management Technical Exchange LWO-LWE-2009-00131 2 MCU Startup and Operations Summary Agenda Mission Process Overview Test Results Startup Processing Results Issues & Resolution Examples Summary 3 MCU Startup and Operations Summary MCU Mission Process dissolved salt solution for disposal - Receive Pu/Sr depleted and clarified waste from ARP - Remove Cs-137 (DF ≥ 12) - Transfer to Tank 50H for Saltstone disposal Provide operational experience for SWPF - Equipment reliability - Process chemistry - Lessons learned 4 MCU Startup and Operations Summary MCU Design Basis Feed - ≤ 1.1 Ci/gal - CSS from 512-S (i.e. filtered) - 4 gpm nominal CSSX

473

Instanton calculus and loop operator in supersymmetric gauge theory  

Science Journals Connector (OSTI)

We compute the one-point function of the glueball loop operator in the maximally confining phase of supersymmetric gauge theory using instanton calculus. In the maximally confining phase the residual symmetry is the diagonal U(1) subgroup and the localization formula implies that the chiral correlation functions are the sum of the contributions from each fixed point labeled by the Young diagram. The summation can be performed exactly by operator formalism of free fermions, which is also featured in the equivariant Gromov-Witten theory of P1. By taking the Laplace transformation of the glueball loop operator, we find an exact agreement with the previous results for the generating function (resolvent) of the glueball one-point functions.

Hiroaki Kanno and Sanefumi Moriyama

2008-06-02T23:59:59.000Z

474

Microsoft PowerPoint - Rail_Massaro  

Office of Environmental Management (EM)

Bloomington, MN Safety Compliance Oversight Plan "SCOP" Tasks * Operational Integrity Train Crew, Train Dispatchers, etc. * Emergency Response Carrier Emergency Response Plans,...

475

Point380 LLC | Open Energy Information  

Open Energy Info (EERE)

Point380 LLC Point380 LLC Jump to: navigation, search Name Point380, LLC Place Boulder, Colorado Zip 80302 Sector Carbon Product Point380 provides carbon consulting and resource management solutions to a broad range of clients seeking energy related risk analysis and policy analysis. Coordinates 42.74962°, -109.714163° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.74962,"lon":-109.714163,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

476

Cedar Point Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Point Wind Farm Point Wind Farm Jump to: navigation, search Name Cedar Point Wind Farm Facility Cedar Point Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Enbridge Inc. Developer RES Americas Energy Purchaser Xcel Energy Location Elbert CO Coordinates 39.219417°, -104.537167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.219417,"lon":-104.537167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

477

End Points Specification Methods | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

End Points Specification Methods End Points Specification Methods End Points Specification Methods Two methods to develop end point specifications are presented. These have evolved from use in the field for deactivation projects. The hierarchical method is systematic, comprehensive, and completely defensible as to the basis for each specification. This method may appear complex to the uninitiated, but it is a straightforward application of a systematic engineering approach. It is labor intensive only during the final stage. This method is appropriate to the type of project involving a complex facility that contains process systems and a variety of contaminated areas or other hazards. The checklist method is an approach that is more appropriate to facilities which require less detailed planning, such as for industrial

478

Star Point Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Point Wind Farm Point Wind Farm Jump to: navigation, search Name Star Point Wind Farm Facility Star Point Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Iberdrola Renewables Developer Iberdrola Renewables Energy Purchaser Modesto Irrigation District Location Near Moro OR Coordinates 45.474734°, -120.704412° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.474734,"lon":-120.704412,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

479

large-point | netl.doe.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Dioxide Capture from Large Point Sources Project No.: FG02-04ER83925 SBIR Commercial hollow fiber membrane cartridge. Commercial hollow fiber membrane cartridge 6"(D) X...

480

Creating Your SharePoint Roadmap  

Science Journals Connector (OSTI)

In this chapter, I focus on the process for creating a vision and a roadmap that describes what a SharePoint service will evolve into over time. I discuss approaches to building a timeline view of enhancements...

Steve Goodyear

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "floating point operations" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Saturation Point Analysis of Moist Convective Overturning  

Science Journals Connector (OSTI)

A unified approach to the thermodynamics of cloudy air, cloud-clear air mixing processes, atmospheric thermodynamic equilibrium structure and instability is formulated, using a new concept: the Saturation Point. This permits the representation of ...

Alan K. Betts

1982-07-01T23:59:59.000Z

482

Operations Information for Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

Operations Information for Studies Operations Information for Studies This page contains historical information about hydropower operations. Reclamation UC Region 24-Month Studies FY2009 Load Information (pdf) SLIP total customer loads for Fiscal Year 2009 (Oct, 2008-Sept, 2009) FY2010 Load Information (pdf) SLIP total customer loads for Fiscal Year 2010 (Oct, 2009-Sept, 2010) FY2011 Load Information (pdf) SLIP total customer loads for Fiscal Year 2011 (Oct, 2010-Sept, 2011) FY2012 Load Information (pdf) SLIP total customer loads for Fiscal Year 2012 (Oct, 2011-Sept, 2012) FY2013 Load Information (pdf) SLIP total customer loads for Fiscal Year 2013 (Oct, 2012-Sept, 2013) CRSP Projected Power Releases From USBR (Excel) The most recent file of projected future power releases from CRSP Dams, median projection

483

Storage Ring Operation Modes  

NLE Websites -- All DOE Office Websites (Extended Search)

Longitudinal bunch profile and Up: APS Storage Ring Parameters Longitudinal bunch profile and Up: APS Storage Ring Parameters Previous: Source Parameter Table Storage Ring Operation Modes Standard Operating Mode, top-up Fill pattern: 102 mA in 24 singlets (single bunches) with a nominal current of 4.25 mA and a spacing of 153 nanoseconds between singlets. Lattice configuration: Low emittance lattice with effective emittance of 3.1 nm-rad and coupling of 1%. Bunch length (rms): 33.5 ps. Refill schedule: Continuous top-up with single injection pulses occurring at a minimum of two minute intervals, or a multiple of two minute intervals. Special Operating Mode - 324 bunches, non top-up Fill pattern: 102 mA in 324 uniformly spaced singlets with a nominal single bunch current of 0.31 mA and a spacing of 11.37 nanoseconds between singlets.

484

Safe Chain Saw Operation.  

E-Print Network (OSTI)

Z TA24S.7 8873 NO.1409 B-1409 SAFE CHAIN SAW OPERATION Gary S. Nelson* A chain saw is a portable power cutting machine. Used properly, it will trim or cut down trees, clear land or cut fireplace wood. Improperly used, a chain saw can... ground level , losing balance, shifting chain saw weight while cutting at or above waist level or ex periencing chain saw kickback. Often, loss of balance causes an operator to reach into the running saw blade as he grabs to steady himself. Other...

Nelson, Gary S.

1982-01-01T23:59:59.000Z

485

Updated July 2009 Operations Organization  

E-Print Network (OSTI)

All-Hands, Brown Bags, and COO Open-Door sessions Ongoing Conduct Operations Employee Climate SurveysOperations Strategic Plan Updated July 2009 #12;Operations Organization Chief Operating Officer deliver exceptional operational services in support of the scientific mission of Berkeley Lab. goals

Eisen, Michael

486

Kalina combined cycle performance and operability  

SciTech Connect

Gas turbine combined cycles using Rankine bottoming cycles have gained broad market acceptance. The favorable plant economics derive from their high efficiency, short construction cycles and excellent environmental performance. The responsive operating characteristics of combined cycles is another key advantage for customers. Duty cycles cover the spectrum from daily start stop (DSS) to base load. Performance and economics of combined cycles have progressed with advances in gas turbine technology as well as the introduction of increasingly efficient multi-pressure Rankine bottoming cycles. Further advances in gas turbine technology and Rankine bottoming cycle performance are becoming incrementally more difficult and costly to achieve. The availability of the Kalina cycle presents a clear path toward improved combined-cycle system performance and reduced cost of electricity. This paper presents detailed performance and operating characteristics of a STAG 207FA combined cycle employing the Kalina bottoming cycle. These characteristics are compared to a conventional three-pressure reheat Rankine bottoming cycle. The Kalina cycle is shown to have performance and operability advantages throughout the range of site conditions and operating regimes, such as base load, load following, DSS duty, wet and dry cooling tower applications and unattended operation. These advantages derive from a single-pressure once-through heat recovery system, above atmospheric working fluid pressure throughout the system, above atmospheric working fluid pressure throughout the system, very high thermal efficiency ({approximately}2.0 to 2.5 percentage points better than the best Rankine), and compatibility with sub-freezing ambient conditions.

Smith, R.W.; Ranasinghe, J.; Stats, D.; Dykas, S.

1996-12-31T23:59:59.000Z

487

Hoyte Phifer Facilities Operations  

E-Print Network (OSTI)

battery operated clocks in offices. #12;#12;·Last year, UNCG produced over 1973 tons of solid waste. · 1. , corner of Highland Ave. and Oakland ­ red brick building #12;#12; "All State agencies, universities, and community colleges that have State-owned vehicle fleets shall develop and implement plans to improve

Saidak, Filip

488

Concept of Operations: Essence  

SciTech Connect

This concept of operations is designed to give the reader a brief overview of the National Rural Electric Cooperative Associations Essence project and a description of the Essence device design. The data collected by the device, how the data are used, and how the data are protected are also discussed in this document.

Hutton, William J.

2014-04-01T23:59:59.000Z

489

Conduct of Operations  

Directives, Delegations, and Requirements

This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Cancels DOE O 5480.19. Admin Chg 2, dated 12-3-14, cancels Admin Chg 1.

2010-06-29T23:59:59.000Z

490

RUNWAY OPERATIONAL QUALITY ASSURANCE  

E-Print Network (OSTI)

RUNWAY OPERATIONAL QUALITY ASSURANCE MELANIE BAKER, DARIC MEGERSA & ALFONSO PANLILIO Sponsors: Dr Vortex Separation Rule, for a homogeneous fleet mix, is determined by the time between arriving aircraft Occupancy (SRO) rule, for a non- homogeneous fleet mix, MTC= 3600/ [ROT] [ROT]= = i (pi *ROTi) ROT (in sec

491

Emergency Operations Training Academy | National Nuclear Security...  

NLE Websites -- All DOE Office Websites (Extended Search)

Emergency Operations Training Academy Emergency Operations Training Academy Emergency Operations Training Academy The Office of Emergency Operations, NA-40-The Emergency Operations...

492

CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Conduct of Operations - Y-12 Enriched Uranium Operations Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility January 2005 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January, 2005 assessment of Conduct of Operations program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility More Documents & Publications CRAD, DOE Oversight - Y-12 Enriched Uranium Operations Oxide Conversion

493

Hybrid protocol of remote implementations of quantum operations  

E-Print Network (OSTI)

We propose a protocol of remote implementations of quantum operations by hybridizing bidirectional quantum state teleportation's (BQST) and Wang's one. The protocol is available for remote implemetations of quantum operations in the restricted sets specified in Sec. III. We also give the proof of the protocol and point out its optimization. As an extension, this hybrid protocol can be reduced to BQST and Wang protocols.

Ning Bo Zhao; An Min Wang

2007-08-04T23:59:59.000Z

494

PynPoint Code for Exoplanet Imaging  

E-Print Network (OSTI)

We announce the public release of PynPoint, a Python package that we have developed for analysing exoplanet data taken with the angular differential imaging observing technique. In particular, PynPoint is designed to model the point spread function of the central star and to subtract its flux contribution to reveal nearby faint companion planets. The current version of the package does this correction by using a principal component analysis method to build a basis set for modelling the point spread function of the observations. We demonstrate the performance of the package by reanalysing publicly available data on the exoplanet beta Pictoris b, which consists of close to 24,000 individual image frames. We show that PynPoint is able to analyse this typical data in roughly 1.5 minutes on a Mac Pro, when the number of images is reduced by co-adding in sets of 5. The main computational work parallelises well as a result of a reliance on SciPy and NumPy functions. For this calculation the peak memory load is 6Gb, ...

Amara, Adam; Akeret, Joel

2014-01-01T23:59:59.000Z

495

An X-point ergodic divertor  

SciTech Connect

A new ergodic divertor is proposed. It utilizes a system of external (n = 3) coils arranged to generate overlapping magnetic islands in the edge region of a diverted tokamak and connect the randomized field lines to the external (cold) divertor plate. The novel feature in the configuration is the placement of the external coils close to the X-point. A realistic design of the external coil set is studied by using the field line tracing method for a low aspect ratio (A {approx equal} 3) tokamak. Two types of effects are observed. First, by placing the coils close to the X-point, where the poloidal magnetic field is weak and the rational surfaces are closely packed only a moderate amount of current in the external coils is needed to ergodize the edge region. This ergodized edge enhances the edge transport in the X-point region and leads to the potential of edge profile control and the avoidance of edge localized modes (ELMs). Furthermore, the trajectories of the field lines close to the X-point are modified by the external coil set, causing the hit points on the external divertor plates to be randomized and spread out in the major radius direction. A time-dependent modulation of the currents in the external (n = 3) coils can potentially spread the heat flux more uniformly on the divertor plate avoiding high concentration of the heat flux. 10 refs., 9 figs.

Chu, M.S.; Jensen, T.H.; La Haye, R.J.; Taylor, T.S.; Evans, T.E.

1991-10-01T23:59:59.000Z

496

Performance and economic comparison between point-to-point HVDC transmission and hybrid back-to-back HVDC/AC transmissions  

SciTech Connect

Two alternative schemes to interconnect asynchronous or independent ac systems by a limited capacity link are presented. The first alternative is a conventional point-to-point HVDC transmission system; the second alternative comprises an ac line terminated by an HVDC back- to-back link. Technical and operational properties of both schemes are illustrated with emphasis on var regulation capability and control flexibility to improve the overall performance of the interconnected ac systems. Cost comparisons for the principal components of the two alternatives are made. A brief description of two existing HVDC installations is given to demonstrate the practical implementation of the considered schemes.

Hammad, A.E. (ABB, Asea Brown Boveri Ltd., Baden (CH)); Long, W.F. (Wisconsin Univ., Madison, WI (USA))

1990-04-01T23:59:59.000Z

497

From Unstructured 3D Point Clouds to Structured Knowledge -A Semantics Approach  

E-Print Network (OSTI)

Vermessung, Mainz, 1France 2Germany 1. Introduction Over the last few years, formal ontologies has been faster, more accurate and can scan objects at longer distances. Such technology presents a powerful tool interaction of the user. Typical operations consist to clean point clouds, to delete unnecessary areas

Paris-Sud XI, Université de

498

An Interior-Point Method for Long Term Scheduling of Large Scale Hydrothermal System  

E-Print Network (OSTI)

and achieves good results in small computational time. Keywords: Interior-point method, Long Term Scheduling hydro plants in the same cascade and the nonlinear nature of thermal costs and hydro generation problem where each hydro plant is individually represented with its own operational constraints. The most

Oliveira, Aurélio R. L.

499

Cable Measuring Engine Operation Procedures  

E-Print Network (OSTI)

MEASURING ENGINE OPERATION PROCEDURES LBNL-40565 SC-MAG-597MEASURING ENGINE OPERATION PROCEDURES INDEX IN T ROD U C TCALIBRATION PROCEDURE . .

Authors, Various

2011-01-01T23:59:59.000Z

500

Operations and Maintenance Program Structure  

Energy.gov (U.S. Department of Energy (DOE))

The Federal Energy Management Program recommends Federal operations and maintenance (O&M) programs comprise of five distinct functions: operations, maintenance, engineering, training, and...