Accurate and timely predictions of airline pushbacks can potentially lead to improved performance of
NASA Technical Reports Server (NTRS)
... Timely and accurate communications with the workforce is considered a critical element in creating positive employee morale. ...
DTIC Science & Technology
Timely and accurate operational intelligence is critical to all Air Force combat operations. The key to timely receipt of accurate intelligence ir properly stated, validated, and prioritized requirements. Air Force operators and commanders need a better u...
National Technical Information Service (NTIS)
Several improvements have been incorporated into the XAIR overset-mesh flow solver which substantially improve the capability of the code to perform time-accurate solutions. These improvements include implementing an upwind flux formulation combined with ...
calibration) will be somewhat less accurate for the following 2-week period, most likely having a small negative bias that improves with each additional ...
NASA Website
... independent, accurate, and timely cost analyses to make the acquisition of NSS ... of the Air Force Space and Missile Systems Center (SMC), Lt Gen ...
An improved solution adaption capability has been implemented in the OVERFLOW overset grid CFD code.
using time-resolved laser-induced fluorescence in the UV and VUV on an atomic beam of boron. The accurate lifetimes provide a base for improved ...
A spirometric measurement device includes an arrangement for computation of a dynamic BTPS correction factor, varying in time according to variation of temperature of a flow sensor. The temperature of the flow sensor is accurately established by positioni...
The objective of this study is to establish accurate repair time standards for transit vehicles in Florida public transit systems. This project develops standards in order to minimize the time required to perform tasks, continually improve reliability of ...
and to the improvement of the quality of healthcare. An ideal EMR would provide complete, accurate, and timely data be dramatically improved. In order to achieve these promised functions of EMR, one necessary condition (EMR) have the potential to make a highly significant contribution to the advancement of medicine
E-print Network
Emphasis surrounding Navy financial management has been in the area of system improvements. Improvement efforts focus on the need to report more accurate and timely financial data. The approach is the development of standard Navy financial management syst...
This research is concerned with improving an existing algorithm to accurately forecast thunderstorm starting times for Cape Canaveral, Florida. This was accomplished by investigating different linear regression techniques than those used in the existing a...
A better understanding of sorption and desorption processes could improve estimates of time and cost required for remedial activities, exposure times and health risk, and bioavailability. Conventional rate-limited sorption models do not accurately define ...
The early history of atomic time and frequency standards is reviewed. The most accurate and stable present standards are described. Prospective future improvements are discussed, particularly those with laser cooling and with trapped ions and atoms.
The improved work control system at the Idaho Chemical Processing Plant minimizes review and approval time, maximizes field work time, and maintains full compliance with applicable requirements. The core team method gives ownership and accountability to knowledgeable individuals, and the teams use sophisticated scheduling techniques to ...
DOE Information Bridge
The primary scientific goal of this proposal is to test for technical capabilities to measure the time of quasar disappearance/reappearance during occultation by Moon with a precision of about 100 microsec of time. These occultations of different quasars can be observed by different VLBI sites. An accurate determination of the moment ...
NASA Astrophysics Data System (ADS)
An emerging use of GPS is to provide accurate navigation information for satellites in orbit. The GPS satellites are designed to provide service to terrestrial users, so the antenna array points directly towards the Earth and uses a narrow primary beamwid...
Emission inventories are the foundation of cost-effective air quality management strategies. The emission inventory must be complete, accurate, timely, transparent, and affordable. The general approach is to identify the largest uncertainties that can impact model outputs and a...
EPA Science Inventory
Military commanders require timely and accurate understanding of the situation in their respective area of responsibility as well as a prediction of the likely intentions and capabilities of supposed or potential adversaries. To achieve this, intelligence...
This Forum guide is designed for use by school, district, and state staff to improve the effectiveness of efforts to collect and use disciplinary incident data, including reporting accurate and timely incident data to the federal government. It provides r...
The semi-implicit method for the MHD equations is extended to grid-point models and for implementation with a more accurate time advance scheme. (ERA citation 12:008732)
While the most accurate method for analysis of sugars in biomass is based on gas chromatography of trimethylsilane or alditol acetate derivitives of sugars, the derivation method is time consuming and laborious. In comparison, sample preparation for sugar analysis using liquid chromatography is a si...
Technology Transfer Automated Retrieval System (TEKTRAN)
An accurate determination of damage fluence accumulated by reactor pressure vessels (RPV) as a function of time is essential in order to evaluate the vessel integrity for both pressurized thermal shock (PTS) transients and end-of-life considerations. The ...
This paper is aimed at identifying and emphasizing the critical factors that contribute to a successful AI breeding season. Accurate and efficient heat detection is the first step toward achieving AI pregnancies. Electronic estrous detection is not necessary if producers will spend more time observi...
Access to timely and accurate sudden oak death (SOD) location data is critical for SOD monitoring, management and research. Several websites (hereafter called the OakMapper sites) associated with sudden ... ...
NBII National Biological Information Infrastructure
NIST has a more than 50-year history of developing ever more accurate atomic frequency standards. For most of that time, the technology was based on thermal atomic beams of cesium atoms, and the accuracy improvement was approximately a factor of 10 every ...
This study sought to determine whether magnetic resonance imaging (MRI) could improve the ability to accurately diagnose the full extent of a patient's disease, including possible cancers in the opposite (or contralateral) breast at the time of the initial diagnosis.
Cancer.gov
Sorption and desorption of hydrophobic organic compounds (HOCs) into soil particles occurs at Air Force contamination sites. Long-term desorption extends clean up time, costing billions. Accurately modeling desorption will reduce costs and improve clean u...
accurate, real-time information to support manufacturing, distribution, stock control and service tracking technologies in the development of improved product support services. The Cambridge Auto-ID LabIntelligent automation for the manufacturing supply chain Distributed Information and Automation
As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined accurately. For non-spectrally corrected data several complete seasonal cycles (typically 3-5 years) are required to obtain ...
This paper presents a hybrid distributed data mining (DDM) model for optimization of response time. The model combines a mobile agent approach with client server strategies to reduce the overall response time. The hybrid model proposes and develops accurate a priori estimates of the computation and communication components of response ...
PubMed
To improve the current status of home multilayer optical coating design with low speed and poor efficiency when a large layer number occurs, the accurate calculation and fast realization of merit function�s gradient and Hesse matrix is pointed out. Based on the matrix method to calculate the spectral properties of multilayer optical coating, an analytic ...
The goal of the Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) is to use a Time Projection Chamber (TPC) to improve the precision of the measurements of the major actinides cross sections. To make these high precision cross section measurements, the start time of each fission event needs to be determined from the TPC ...
The present invention relates to a probe for determining the orientation of electron beams being profiled. To accurately time the location of an electron beam, the probe is designed to accept electrons from only a narrowly defined area. The signal produced from the probe is then used as a timing or triggering fiducial for an operably ...
DOEpatents
... Accession Number : ADA401116. Title : The Most Likely Nemesis to Timely, Accurate Electronic Information. Corporate Author ...
We estimate how accurate the phase relaxation time of quantum many-body systems can be determined from data on forward peaking of evaporating protons from a compound nucleus. The angular range and accuracy of the data needed for a reliable determination of the phase relaxation time are evaluated. The general method is applied to ...
Energy Citations Database
... Unsteady or time-accurate CFD modeling Competent smart munitions that can more accurately hit a ... cubic k-& model, depending on grid fineness. ...
In the present study, a Compton camera, including detailed timing characteristics of the component detectors and related data acquisition (DAQ) electronics, was modeled very accurately with Geant4. The results are very convincing�the inclusion of the timing characteristics in the simulation reduced the imaging sensitivity discrepancy ...
An accurate calculation of the first passage time probability density (FPTPD) is essential for computing the likelihood of solutions of the stochastic leaky integrate-and-fire model. The previously proposed numerical calculation of the FPTPD based on the integral equation method discretizes the probability current of the voltage crossing the threshold. ...
The Medicare program initiated prospective payment for inpatient hospital services in 1983. Although the payment system has achieved many of its goals, changes in the health care market and the public nature of the program will continue to present both challenges and opportunities for improvement. Looking forward, policymakers must consider how to balance paying ...
Efficient and accurate measurement of natural gas is discussed. Advanced electronic technology makes accurate and timely measurement feasible. However, the key to the success of custody-transfer systems is integrating field measurement and office procedures. Electronic measurement also allows for automated on-line billing, more ...
For real time measurements of small displacements and deformations, dependence of the Young's fringes' visibility on an applied voltage to a BSO-PROM device, which is used as a recording device of the specklegram in the speckle photography, has been investigated. It is experimentally shown that the Young's fringes' visibility is improved by changing the ...
The continuous-time quantum Monte Carlo method based on the strong coupling expansion is an efficient and flexible tool for the solution of multiorbital Anderson impurity models. However it is known that it is difficult to accurately compute the intermediate and high-frequency behavior of measured quantities. This leads to large errors, in particular for ...
A modified regional self-interaction correction (mRSIC) method is proposed for obtaining accurate core-excitation energies in time-dependent density functional theory (TDDFT) calculations. The mRSIC method is an improvement of the RSIC method (Tsuneda et al. J Comput Chem 2003, 24, 1592). It takes into account the energy contributions ...
The space-time version of the epidemic type aftershock sequence (ETAS) model is based on the empirical laws for aftershocks, and constructed with a certain space-time function for earthquake clustering. For more accurate seismic prediction, we modify it to deal with not only anisotropic clustering but also regionally distinct ...
To improve exploration prospect evaluation and production reservoir delineation, marine vertical seismic profiling was developed as an added tool to measure seismic wave reflections and propagation parameters in the vicinity of boreholes at seismic frequencies. This new VSP tool can be used to determine: accurate time-to-depth ...
We report some improvements to the gradient ascent pulse engineering (GRAPE) algorithm for optimal control of spin ensembles and other quantum systems. These include more accurate gradients, convergence acceleration using the Broyden-Fletcher-Goldfarb-Shanno (BFGS) quasi-Newton algorithm as well as faster control derivative calculation algorithms. In all ...
Methods are resented by which the dispatch of an electric system can be improved. These methods require accurate and timely data from generating stations. They also require dispatch methods that operates with the generating units' actual input-output characteristics rather than with input-output curves that are required to be ...
Key steps that led to Kennestone Hospital's success in improving patient flow in the cath lab included: Developing an urgency classification system for patients. Creating a more accurate scheduling system to increase throughput and efficiency. Establishing a project team. Developing a time line. Recognizing ongoing challenges ...
An approach to the construction of high-order accurate implicit predictor-corrector schemes is proposed. The accuracy is improved by choosing a special time integration step for computing numerical fluxes through cell interfaces by using an unconditionally stable implicit scheme. For smooth solutions of advection equations with ...
... 577 CALIBRATING GPS WITH TWSTFT FOR ACCURATE TIME TRANSFER ... 83% of UTC time links are obtained via GPS observations. ...
... FLAWS ACCURATELY WITH ULTRASONICS, IT IS NECESSARY TO HAVE SUFFICIENT RESOLUTION IN EITHER THE TIME OR FREQUENCY ...
The rate of outdoor air (OA) supply affects building energy consumption, occupant health, and work performance; however, minimum ventilation rates are often poorly controlled. Real-time measurements of OA flow rates into HVAC systems would enable improved flow control. This article demonstrates that at least some of the available technologies for ...
The major deficiencies which the industry set out to correct immediately occur in the following areas: operator training and qualification; improved plant status and control capability; independent evaluation of operations; emergency response; management structure support to safe reactor operation; adequate and timely technical support; and ...
There is an urgent need to provide accurate air quality information and forecasts to the general public and environmental health decision-makers. This paper develops a hierarchical space-time model for daily 8-hour maximum ozone concentration (O3) data covering much of the easter...
Coccidioidomycosis is an infection caused by Coccidioides immitis or C. posadasii. We developed a TaqMan real-time PCR assay that rapidly and accurately differentiates the species. This assay can be used as a tool to improve disease surveillance, increase understanding of the natural history of the infection, and assist in clinical ...
improvements with KLM. 5.5 Load Distribution In this section, we show the main benefit of our KLM scheme 191 Time Variance KLM KLM Avg Figure 8. Load Distribution in Shared Data-Center Scenario Hosting Zipf-end nodes was distributed for a period of time in the data-center. As seen in Figure 8, the variance of load
Make accurate measurements of length, volume, weight, elapsed time, rates, and temperature by using appropriate devices.
NSDL National Science Digital Library
A diamond mixed tunneling and avalanche transit-time diode is designed in this letter. Schottky contact is used in this kind of diode to reduce the contact resistance. Electrical characteristics of n-type diamond Schottky contact have been accurately investigated. Total output power of such transit-time diode is evaluated using an ...
The complex dependence of the reactivity-time function {rho}(t) for the HERBE safety rods during reactor shutdown is determined by combining both previously obtained reactivity worth data {rho}(z) and measurements of safety rod trajectory z(t). The integral reactivity-time function of the safety rods {rho}(T), including the rods interference reactivity ...
Simulations are notorious for being among the most expensive of all computational tasks. In many engineering, military and scientific computer installations processing time is devoted almost exclusively to simulation. The execution of one simulation can take many hours of computer time. When the simulation model is probablistic or if sensitivity analysis ...
In this paper, a new method for the accurate measurement of safety rod drop times is proposed. It is based on a fast electromagnetic transducer and an analog-to-digital converter (ADC) conected to a computer system. Evaluation of recorded data is conducted by a developed computer code. The first measurements performed at the HERBE fast-thermal RB reactor ...
PMU devices are expected to grow in number from a few to several hundreds in the next five years. Some relays are already global positioning system-capable and could provide the same type of data as any PMU. This introduces a new paradigm of very fast accurate synchrophasor measurements from across the grid in real-time that augment and parallel existing ...
We propose a method which uses centroid molecular dynamics (CMD) [J. Cao and G. A. Voth, J. Chem. Phys. 100, 5106 (1994)] real-time data in conjunction with the imaginary-time data generated using path integral Monte Carlo simulations in a numerical analytic continuation scheme based on the maximum entropy approach. We show that significant ...
The SNO+ liquid scintillator experiment is under construction in the SNOLAB facility in Canada. The success of this experiment relies upon accurate characterization of the liquid scintillator, linear alkylbenzene (LAB). In this paper, scintillation decay times for alpha and electron excitations in LAB with 2 g/L PPO are presented for both oxygenated and ...
Novice and skilled golfers took a series of golf putts with a standard putter (Exp. 1) or a distorted "funny putter" (consisting of an s-shaped and arbitrarily weighted putter shaft; Exp. 2) under instructions to either (a) take as much time as needed to be accurate or to (b) putt as fast as possible while still being accurate. ...
ERIC Educational Resources Information Center
Two continuing and important objectives of computational chemists and chemical engineers are first, to predict accurately the feasibility and extent of chemical reactions, and second, to predict accurately the rate of approach to chemical equilibrium for these reactions. The focus of our research presently is on the first of these objectives. Our specific ...
The saturation development equation is solved analytically to give a solution that is more general than the existing analytical solution. This analytical solution provides accurate predictions of the saturation ratio and allows the use of relatively large time steps for the simulation of condensation processes. A statistical method that is nonanalytical in ...
Apparatus and method for improving the resolution of non-pressure driven capillary chromatographic systems, and particularly for capillary electrochromatography (CEC) systems. By reducing the cross-sectional area of a packed capillary column by means of a second open capillary contiguous with the outlet end of a packed capillary column, where the packed capillary column has a ...
A technique has been developed to obtain selected source parameters for a release of toxic material into the atmosphere by inversion of a set of sensor observations. The technique utilizes the Marquardt inversion method coupled to a Gaussian puff atmospheric dispersion model. The major objective of this report is to perform a set of sensitivity calculations to explore the robustness of the source ...
Page 1. Time-Accurate Simulations of Synthetic Jet-Based Flow ... September 2004 Time-Accurate Simulations of Synthetic Jet-Based Flow ...
...accurate relevant, timely, or complete, he may submit such a request...Corporation, 1129�20th Street, NW., Washington, DC...accurate, relevant, timely or complete; and (5) It shall...accurate, relevant, timely, or complete and notify the individual...
Code of Federal Regulations, 2011
The objectives of the study are to: provide a current, comprehensive, and accurate data base of railroad economic activity and energy consumption; describe planned and postulated expansion and the time frame of future developments; identify research and development needs related to improvements in energy utilization; and provide data ...
The Exposure Time Calculator (ETC) is a web-based application that assists users in calculating the exposure time needed for their HST observations, or the Signal-to-Noice Ratio (SNR) they can attain with a given HST observing time. These quantities are key for the preparation of proposals and observations during Phase I and Phase II ...
Stochastic simulation methods are important in modeling chemical reactions, and biological and physical stochastic processes describable as continuous-time discrete-state Markov chains with a finite number of reactant species and reactions. The current algorithm of choice, tau-leaping, achieves fast and accurate stochastic simulation by taking large ...
An MPI library's implementation of broadcast communication can significantly affect the performance of applications built with that library. In order to choose between similar implementations or to evaluate available libraries, accurate measurements of broadcast performance are required. As we demonstrate, existing methods for measuring broadcast performance are ...
With the increasing complexity of design and the shrinking of technology nodes, optical proximity correction has become an integral part of IC fabrication. Pattern fidelity is the baseline for any accurate OPC model. Calibrated process models are used to make iterative pattern adjustments over a fragmented design to align simulated images and the target layout. More and more ...
Accurate automated cell fate analysis of immunostained human stem cells from 2- and 3-dimensional (2D-3D) images would improve efficiency in the field of stem cell research. Development of an accurate and precise tool that reduces variability and the time needed for human stem cell fate analysis will ...
EnergyPlus is a new generation building performance simulation program offering many new modeling capabilities and more accurate performance calculations integrating building components in sub-hourly time steps. However, EnergyPlus runs much slower than the current generation simulation programs. This has become a major barrier to its widespread adoption ...
Quantitative analysis of liquid chromatography (LC)- mass spectrometry (MS) and tandem mass spectrometry (MS/MS) data is essential to many proteomics studies. We have developed MASIC to accurately measure peptide abundances and LC elution times in low-resolution LC-MS/MS analyses. This software program uses an efficient processing algorithm to quickly ...
Accurate forecasting of future climate requires an improved understanding of the global carbon cycle
... ADA497428. Title : Timing-Accurate Storage Emulation: Evaluating Hypothetical Storage Components in Real Computer Systems. ...
... predict the time-accurate unsteady aerodynamics of a ... means to provide the control authority to ... and extraction of the aerodynamic coefficients from ...
... Title : Time-Accurate Computations of Free-Flight Aerodynamics of a Spinning Projectile With and Without Flow Control. ...
... Accession Number : ADP023738. Title : Time-Accurate Calculations of Free-Flight Aerodynamics of Maneuvering Projectiles. ...
... Time Accurate Euler Calculations of Vortical Flow over a Delta Wing in Rolling Motion ... [11] for a rolling delta wing at high incidence), the last ...
... ADA375813. Title : Time Accurate CFD Analysis of Ship Air Wake with Coupled V-22 Flow. Descriptive Note : Professional paper. ...
Allison, M., 1997: Accurate analytic representations of solar time and seasons on Mars with applications to the Pathfinder/Surveyor missions. Geophys. Res. ...
A Fully Implicit Time Accurate Method for Hypersonic Combustion: Application to ... Logistics and Technical Information Division Last Updated: 5/31/2011.
Reactive transport is a highly non-linear problem requiring the most efficient algorithms to rapidly reach an accurate solution. The non-linearities are increased and the resolution is even more demanding and CPU-intensive when considering feedback of dissolution or precipitation reactions on hydrodynamic flow and transport, commonly referred to as the variable porosity case. ...
The variational nodal transport method is generalized for the treatment of heterogeneous nodes while maintaining nodal balances. Adapting variational methods to heterogeneous nodes requires the ability to integrate over a node with discontinuous cross sections. Integrals are evaluated using composite Gaussian quadrature rules, which permit accurate integration while yielding ...
One of the greatest uncertainties in modeling the ionospheric densities and temperatures lies in the neutral winds that affect the vertical ion drift. Wind measurements are difficult to make, and current wind models are not adequate. An alternative is to deduce an equivalent meridional neutral wind from measurements of the height of the F{sub 2} peak electron density. This method has been ...
An accurate approach for reconstructing a time-dependent two-dimensional signal from non-synchronized time series recorded at points located on a grid is discussed. The method, denoted as correlation sampling, improves the standard conditional sampling approach commonly employed in the study of turbulence in ...
We present a fast, simple and highly accurate method for measuring Phagocyte Chemiluminescence by using a standard liquid scintillation counter with a simple modification. The method allows the measurement of multiple samples automatically, with standardized mixing and measurement times, at a constant temperature. This is achieved with a minimum of ...
Research of the shortest path problem in time-dependent networks has important practical value. An improved pheromone update strategy suitable for time-dependent networks was proposed. Under this strategy, the residual pheromone of each road can accurately reflect the change of weighted value of each road. An ...
The collection of accurate and complete coded data is critical to healthcare delivery, research, public reporting, reimbursement, and policy-making. The integrity of coded data and the ability to turn it into functional information requires all users to consistently apply the same official coding rules, conventions, guidelines, and definitions (the basis of coding standards). ...
The demand for continuous glucose monitoring systems is greater than ever. The microelectromechanical systems (MEMS) approach has the advantage of being relatively easy to upscale to a commercial level; the preferred MEMS technique would be to run several detectors at once and, through the improved statistics, get a both more accurate and more reliable ...
PubMed Central
The acceptance and development of Milankovich astronomical paleoclimate theory resulted largely from accurate measurements of various geological indicators of the climate of the past, starting with the celebrated work of (Hays, Imbrie, and Shackleton, 1976), but also from the improvement of the computed past evolution of the orbital and rotational motion ...
To provide accurate and timely weather forecasts, the National Weather Service (NWS) uses systems, technologies, and manual processes to collect, process, and disseminate weather data to its nationwide network of field offices and centers. After completin...
Low back pain is a common malady, affecting up to 80% of adults at some time. Our diagnostic capabilities have been markedly improved with the introduction and evolution of magnetic resonance imaging. MRI is an accurate modality in the diagnosis of disc herniation, as well as recurrent disc herniation, degenerative disc disease, and ...
is the most important aspect of our business and everyone's bonus is linked to our Customer Satisfaction Index to the information required for accurate, efficient enquiry resolution. The Customer Satisfaction Index, on which. A key measure within the Customer Satisfaction Index is the length of time a customer is kept on hold
and to plan for the introduction of new aircraft13 surface movement guidance and control systems. A fast of multiple sensors by the ASDE-x system results30 in highly accurate and reliable coverage of aircrafts increased [3], and that small improvements matter: `saving an average of 5 seconds on every46 aircraft
Right-of-Way (ROW) acquisition for highways and other transportation improvements can be very expensive, time-consuming, and socially sensitive. Accurate ROW cost estimation, efficient acquisition practices, and appropriate federal and/or state laws can b...
Use of computer systems for on-site and postjob analysis of cementing operations has proved effective for improving quality control and increasing the probability of successful primary cementing. This paper outlines the steps needed to measure surface parameters accurately and model changing downhole conditions during foam cementing. The equations used to ...
and to improve water use efficiency in irrigated agricul- ture. Good irrigation management requires an accurate for irrigation planning and design, irrigation manage- ment, basic irrigation scheduling and real-time irrigation are interested in the determination of crop water requirement and hence irrigation manage- ment, crop ...
The accurate determination of the Mars pole vector derived from Pathfinder and Viking Lander radio data, together with the VSOP87 representation of planetary orbits, have been applied to a new evaluation of the right ascension of the 'fictitious mean sun'...
Medication calculation needs to be completed accurately for proper patient treatment. In this section you will need to review and improve your medication math. Understanding math: Math and Culture Refresher: Take the amount of fluid in the bottle and times that by the dose ordered. Then divide this number by the amount of drug in the ...
The Joint Milli-Arcsecond Pathfinder Survey (J-MAPS) mission is a star mapping microsat mission proposed for launch in the 2011 timeframe. The primary objectives of J-MAPS are to generate star catalogs that are 15 times more accurate at current epoch (200...
A pellet-stream concept for interstellar propulsion is described. Small pellets are accelerated in the solar system and accurately guided to an interstellar probe where they are intercepted and transfer momentum. This propulsion system appears to offer orders-of-magnitude improvements in terms of engineering simplicity and power requirements over any other ...
This paper describes a stable, flexible, fully implicit, finite-difference simulator in heterogeneous, two-porosity reservoirs. The simulator is accurate enough to match analytical solutions to single phase problems. It is shown that the model produces essentially the same answers as the common single-porosity model of a highly heterogeneous system, but with a substantial ...
and photometry for the known components of this lens. The optical separation between the A and B quasar images. Introduction Now that an accurate time delay between the two images of the gravitationally lensed quasar Q0957 the parameters until the quasar image positions are reproduced (e.g. Falco, Goren� stein, & Shapiro 1991
There is an urgent need to provide accurate air quality information and forecasts to the general public. A hierarchical space-time model is used to forecast next day spatial patterns of daily maximum 8-hr ozone concentrations. The model combines ozone monitoring data and gridded...
A mixing machine is designed comprising a set of mixing drums arranged to move in a closed circuit from a charging point to a discharging point and back again. The machine can be used to mix materials in accurately weighed batches and to deliver the mixed materials to a pelleting press operated on a specific pressing time cycle. (D.L.C.)
A fault finder for locating faults along a high voltage electrical transmission line. Real time monitoring of background noise and improved filtering of input signals is used to identify the occurrence of a fault. A fault is detected at both a master and remote unit spaced along the line. A master clock synchronizes operation of a similar clock at the ...
An improved technique for the generation of escape and transmission probabilities in cylindrical geometry was applied to the existing resonance cross section processing code ROLAIDS. The algorithm of Hwang and Toppel, (ANL-FRA-TM-118) (with modifications) was employed. The probabilities generated were found to be as accurate as those given by the method ...
As former director of communications for the Woods Hole Oceanographic Institution, and a writer and editor who has worked in the science and engineering fields for more than 20 years, I applaud Susan Joy Hassol's summary of what scientists need to know to communicate with the public accurately and clearly about climate change in this time of rising demand ...
Leadership, culture of safety, robust process improvement are key elements of creating high reliability, experts say. High level of safety must be maintained over a long period of time over all of the facility's services. New methods of calculation are required to accurately measure the level of reliability that has been achieved. ...
It no longer takes days to check out and calibrate the multitude of digital data-gathering instruments at the Nevada Test Site. The EE Department's Field Test Division has installed a new computer-controlled calibration system that does the job much faster, more accurately, and with automatic documentation of results. A description of this system is given. ...
The astrometric accuracy of Gaia is placed in perspective by showing its expected performances in relation with the slow and unsteady historical progress, specifically in two areas: (i) the realisation of the reference frame, (ii) the measurement of trigonometric parallaxes. It appears clearly that both Hipparcos and Gaia are truly epoch-making steps in this age-old quest for ...
Existing forecasting models of auto vehicle miles of travel (VMT) are reviewed, and presents evidence that such models incorrectly omit time cost and spatial form variables is presented. The omission of these variables biases parameter estimates in existing VMT models. More accurate parameter estimates are made, and suggestions are made for ...
Building Ontario's Wait Time Information System (WTIS) was one of the largest and most complex technology projects Cancer Care Ontario (CCO) had ever taken on. Increasing public concern about wait times and the lack of adequate tools to provide a clear or accurate picture of provincial wait times had led to a sense ...
We propose to develop a dynamic algorithm that intelligently analyzes existing solar weather data and constructs an increasingly more accurate equation/algorithm for predicting solar weather accurately in real time. This dynamic algorithm analyzes a wealth of data derived from scientific research and provides increasingly ...
Establishing the correspondences of brain anatomy with function is important for understanding neuroimaging data. Regional delineations on morphological surfaces define anatomical landmarks and help to visualize and interpret both functional data and morphological measures mapped onto the cortical surface. We present an efficient algorithm that accurately delineates the ...
Engine test cell design is an important consideration for most engine manufacturers; proper test cell design can contribute to improved test cell efficiency, lower operating costs and more accurate engine test data. Optimum test cell designs are not, however, easily achieved and must address several, often contradictory, objectives: minimum test and setup ...
Accurate clinical documentation is necessary for healthcare organizations to achieve quality improvement and accurate payment. Physician buy-in is essential to a successful clinical documentation improvement program. The program should not focus on revenue enhancement or a particular tool, but should encourage ...
Isocratic retention data should make a suitable foundation for an accurate, cross-instrument LC retention prediction system. Our previous work suggested that in order to accurately calculate (or "project") gradient retention times on a wide range of HPLC systems using a single set of isocratic retention data, the precise shape of both ...
A two-stage counting procedure is recommended for some routine monitoring operations in which many weak radioactive samples are inspected although an accurate quantitative measurement is required on only the more active samples. In the proposed method all samples are first inspected by a rapid sorting test which rejects the weaker samples. The remainder, which may ...
The spectroscopic ellipsometry of lamellar gratings made of lossless dielectric materials is studied numerically by using the rigorous coupled-wave method with the use of Li's Fourier factorization rules [J. Opt. Soc. Am. A 13, 1870 (1996)], which are known to improve the convergence on the analyses of metallic gratings. Numerical results show that the calculation method also ...
Three relatively new positioning technologies are being used within the oil industry to cut costs and improve profitability. These technologies are the Navstar satellite global positioning system (GPS), digital orthomaps (DOMs), and geographic information systems (GISs). With these tools, oil company professionals are more accurately positioning their data ...
The touchstone to evaluate accurately the aggressiveness and invasiveness of prostate cancer is something of a holy grail in the facet of urologic oncology. Gene expression and sequencing studies have improved our interpretations of the genetic determinants of the disease but are unsuccessful in the establishment of any unified classification to ...
From the brick plant to the advanced ceramic manufacturer, classical thermal analysis equipment such as DTA, TGA, and dilatometers is invaluable for R and D and quality control. An overview of these instruments and some examples of how they are used to improve product quality are discussed. These time-tested instruments have been providing quick, ...
The modeling of MOS device response to a low dose rate irradiation has been performed. The existing conversion model based on the linear dependence between positive oxide charge annealing and interface trap buildup accurately predicts the long time response of MOSFETs with relatively thick oxides but overestimates the threshold voltage shift for radiation ...
Positron emission tomography (PET) is a molecular imaging technique which provides important functional information about the human body. However, thoracic PET images are often substantially degraded by respiratory motion, which adversely impacts on subsequent diagnosis. In this paper, a motion correction and attenuation correction method is proposed to correct for motion in respiratory gated PET ...
An improved liquid feed system for the Berglund-Liu vibrating orifice monodisperse aerosol generator (VOMAG) is described. The feed system employs a positive-displacement pump and pulse dampener to provide an accurate solution feed rate to the VOMAG. Advantages over the syringe pump feed system are reduced orifice clogging, elimination of leaks, and large ...
... submissions. These validation checks are intended to ensure that submissions are processed and routed accurately and in a timely fashion. ...
Center for Drug Evaluation (CDER)
An accurate and simple technique for measuring rms phase noise as a function of integration time for
