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1
VARIATIONS IN THE AXISYMMETRIC TRANSPORT OF MAGNETIC ELEMENTS ON ...

This small error introduced annual variations in the apparent cross-equatorial meridional flow. Here, we account for those positional errors in mapping the ...

NASA Website

2
Sample positioning effects in x-ray spectrometry

Instrument error due to variation in sample position in a crystal x-ray spectrometer can easily exceed the total instrumental error. Lack of reproducibility in sample position in the x-ray optics is the single largest source of system error. The factors that account for ...

Energy Citations Database

3
Robust positioning using relaxed constraint-propagation Vincent Drevelle and Philippe Bonnifait

is proposed. Using asynchronous unreliable absolute positions and reliable proprioceptive measurements by intervals taking errors into account. Integrity is assumed on proprioceptive measurements error bounds, and attitude information is unavailable at slow speeds. Proprioception is used to get relative motion

E-print Network

4
Error Analysis and Methods for Estimating Errors in Position ...
1971-05-01

... Accession Number : AD0782672. Title : Error Analysis and Methods for Estimating Errors in Position, Velocity, and Acceleration Data. ...

DTIC Science & Technology

5
Error Predictions in Accounting Populations.
1986-09-01

... Title : Error Predictions in Accounting Populations. ... simulation was performed by repetitive sampling from an accounting population with various ...

DTIC Science & Technology

6
An Analysis of High Ionosphere Positive Ion Ram Probes.
1967-01-01

An analysis of ion collection to a rocket borne ion probe is presented. The analysis is performed for both the planar and spherical geometry probes taking into account the presence of the ion sheath which surrounds the probe. From the above, the error int...

National Technical Information Service (NTIS)

7
Potential Reduction of Position Estimation Error for the RMS ...
1982-10-01

... POSITION FINDING, ERRORS, GUIDED MISSILE TRACKING SYSTEMS, GUIDED MISSILE RANGES, TARGET POSITION INDICATORS. ...

DTIC Science & Technology

8
Rapid mapping of volumetric machine errors using distance measurements
1998-04-01

This paper describes a relatively inexpensive, fast, and easy to execute approach to maping the volumetric errors of a machine tool, coordinate measuring machine, or robot. An error map is used to characterize a machine or to improve its accuracy by compensating for the systematic errors. The method consists of three steps: (1) models ...

DOE Information Bridge

9
How is somatosensory information used to adapt to changes in the mechanical environment?
2007-01-01

Recent studies examining adaptation to unexpected changes in the mechanical environment highlight the use of position error in the adaptation process. However, force information is also available. In this chapter, we examine adaptation processes in three separate studies where the mechanical environment was changed intermittently. We compare the expected ...

PubMed

10
Specifying the Worst Case � Orthogonal Modeling of Hardware Errors

, as, for example, electro-magnetic fields. Thus, hardware errors are common and have to be accounted charts [10, 25] or stream-based formalisms [4, 9]. While direct application of these formalisms can, for the goal of testing the Figure 1: Sketch of the Guarded Drill in waiting Position Figure 2: Sketch

E-print Network

11
Adaptive radiation therapy for compensation of errors in patient setup and treatment delivery
2004-12-01

In this paper, an adaptive radiation therapy algorithm is derived and evaluated using numerical simulations. Patient setup errors are considered and an off-line adaptive method to compensate for the effect of these is provided. The method consists of two parts, one for correction of patient position to account for the systematic ...

Energy Citations Database

12
Quantum Positioning System
2004-12-01

... function user position. The function that describes the errors in position has a complex spatial dependence. In the case ...

DTIC Science & Technology

13
Error compensation algorithm for patient positioning robotics system
2009-03-01

Surgeons in various medical areas (orthopedic surgery, neurosurgery, dentistry etc.) are using motor-driven drilling tools to make perforations in hard tissues (bone, enamel, dentine, cementum etc.) When the penetration requires very precise angles and accurate alignment with respect to different targets, precision cannot be obtained by using visual estimation and hand-held tools. Robots have been ...

NASA Astrophysics Data System (ADS)

14
Error awareness revisited: accumulation of multimodal evidence from central and autonomic nervous systems.
2011-01-26

The differences between erroneous actions that are consciously perceived as errors and those that go unnoticed have recently become an issue in the field of performance monitoring. In EEG studies, error awareness has been suggested to influence the error positivity (Pe) of the response-locked event-related brain ...

PubMed

15
Better or worse than expected? Aging, learning, and the ERN.
2007-09-07

This study examined age differences in error processing and reinforcement learning. We were interested in whether the electrophysiological correlates of error processing, the error-related negativity (ERN) and the feedback-related negativity (FRN), reflect learning-related changes in younger and older adults. To do so, we applied a ...

PubMed

16
Improving occupancy estimation when two types of observational error occur: non-detection and species misidentification.
2011-07-01

Efforts to draw inferences about species occurrence frequently account for false negatives, the common situation when individuals of a species are not detected even when a site is occupied. However, recent studies suggest the need to also deal with false positives, which occur when species are misidentified so that a species is recorded as detected when a ...

PubMed

17
THE ERROR IN ESTIMATING MISSILE POSITION AND ...
1963-12-01

... Accession Number : AD0426081. Title : THE ERROR IN ESTIMATING MISSILE POSITION AND VELOCITY AT CUTOFF FROM SMOOTHED DATA,. ...

DTIC Science & Technology

18
RANDOM ERROR IN ESTIMATING SUBMARINE POSITION ...
1963-09-25

... Title : RANDOM ERROR IN ESTIMATING SUBMARINE POSITION BY USING ONLY SOUNDINGS FROM THREE FIXED HYDROPHONES,. ...

DTIC Science & Technology

19
An Error Sensitivity Model for Doppler Positioning Using ...
1989-08-01

... Accession Number : ADA216724. Title : An Error Sensitivity Model for Doppler Positioning Using Transit Satellites. Corporate ...

DTIC Science & Technology

20
An Error Analysis of Range-Azimuth Positioning.
1983-09-01

... Accession Number : ADA136775. Title : An Error Analysis of Range- Azimuth Positioning. Descriptive Note : Master's thesis,. ...

DTIC Science & Technology

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21
Relative finger position influences whether you can localize tactile stimuli
2010-11-16

To investigate whether the relative positions of the fingers influence tactile localization, participants were asked to localize tactile stimuli applied to their fingertips. We measured the location and rate of errors for three finger configurations: fingers stretched out and together so that they are touching each other, fingers stretched out and spread ...

PubMed Central

22
40 CFR 96.156 - Account error.
2009-07-01

... 2009-07-01 false Account error. 96.156 Section 96.156 Protection of Environment ENVIRONMENTAL PROTECTION...Plans CAIR NOX Allowance Tracking System § 96.156 Account error. The Administrator may, at...

Code of Federal Regulations, 2010

23
Twisting tongues and memories: Explorations of the relationship between language production and verbal working memory
2009-04-01

Many accounts of working memory posit specialized storage mechanisms for the maintenance of serial order. We explore an alternative, that maintenance is achieved through temporary activation in the language production architecture. Four experiments examined the extent to which the phonological similarity effect can be explained as a sublexical speech ...

PubMed Central

24
Twisting Tongues and Memories: Explorations of the Relationship between Language Production and Verbal Working Memory
2009-04-01

Many accounts of working memory posit specialized storage mechanisms for the maintenance of serial order. We explore an alternative, that maintenance is achieved through temporary activation in the language production architecture. Four experiments examined the extent to which the phonological similarity effect can be explained as a sublexical speech ...

ERIC Educational Resources Information Center

25
Monte Carlo simulations of the impact of troposphere, clock and measurement errors on the repeatability of VLBI positions
2011-01-01

Within the International VLBI Service for Geodesy and Astrometry (IVS) Monte Carlo simulations have been carried out to design the next generation VLBI system ("VLBI2010"). Simulated VLBI observables were generated taking into account the three most important stochastic error sources in VLBI, i.e. wet troposphere delay, station clock, and measurement ...

NASA Astrophysics Data System (ADS)

26
Navigation performance of an aided redundant strapdown IMP in normal and failure modes
1979-02-01

The performance of a redundant strapdown inertial navigation system in normal, failure, and reconfiguration modes is analyzed. The linearized error analysis of the system is performed via a sensitivity matrix which relates the attitude, position, and velocity errors to the system error sources. The recursive ...

NASA Astrophysics Data System (ADS)

27
Aerosol impact and correction on temperature profile retrieval from MODIS
2008-07-01

Aerosols over desert areas can impact the temperature profile retrieval using infrared remote sensing techniques. Retrievals from Moderate Resolution Imaging Spectroradiometer (MODIS) Infrared (IR) radiances over the Gobi region in China show that atmospheric temperatures above the top of the boundary layer can be retrieved with a root mean square error (rmse) better than 2 K. ...

NASA Astrophysics Data System (ADS)

28
Mount errors model for the Kyiv SLR station
2002-01-01

Instrumental mount errors are dealt in the paper for the satellite laser ranging. Modelling was made for the mount of the telescope of the Kyiv SLR station (station number 1824) located at the campus of the Main Astronomical Observatory. A method has been proposed for evaluation of errors model using observation of bright stars. The theory is described of ...

NASA Astrophysics Data System (ADS)

29
Considering imperfections using 3D imaging system in angle obtaining, angle signal distance computing and multivariate distance graphing.
1995-08-01

Fields such as medicine, biomechanics or ergonomics need to measure the positions and the rotational movements of body segments. The aim of this article is to underscore the problem of imperfection on angle measurement using a three-dimensional television system. First, the error on a single angle value is assessed through the classical Taylor's formula ...

PubMed

30
Shortcuts to Quantifier Interpretation in Children and Adults
2005-12-01

Errors involving universal quantification are common in contexts depicting sets of individuals in partial, one-to-one correspondence. In this article, we explore whether quantifier-spreading errors are more common with distributive quantifiers each and every than with all. In Experiments 1 and 2, 96 children (5- to 9-year-olds) viewed pairs of pictures and ...

ERIC Educational Resources Information Center

31
Is comprehension necessary for error detection? A conflict-based account of monitoring in speech production.
2011-06-07

Despite the existence of speech errors, verbal communication is successful because speakers can detect (and correct) their errors. The standard theory of speech-error detection, the perceptual-loop account, posits that the comprehension system monitors production output for ...

PubMed

32
Is Comprehension Necessary for Error Detection? A Conflict-Based Account of Monitoring in Speech Production
2011-08-01

Despite the existence of speech errors, verbal communication is successful because speakers can detect (and correct) their errors. The standard theory of speech-error detection, the perceptual-loop account, posits that the comprehension system monitors production output for ...

ERIC Educational Resources Information Center

33
The Joint Position-Amplitude Formulation for Hurricane State Estimation
2008-12-01

Classical formulations of data assimilation, whether sequential, ensemble-based or variational, are amplitude adjustment methods. Such approaches can perform poorly when forecast locations of weather systems are displaced from their observations. Compensating position errors by adjusting amplitudes can produce unacceptably 'distorted' states, adversely ...

NASA Astrophysics Data System (ADS)

34
A new method of incorporating systematic uncertainties in intensity-modulated radiotherapy optimization
2005-08-15

Uncertainties in tumor position during intensity-modulated radiotherapy (IMRT) plan optimization are usually accounted for by adding margins to a clinical target volume (CTV), or additionally, to organs at risk (OAR). The former approach usually favors target coverage over OAR protection, whereas the latter does not account for ...

Energy Citations Database

35
En Route Operational Errors: Transfer of Position ...
2008-07-01

Page 1. En Route Operational Errors: Transfer of Position Responsibility as a Function of Time on Position Larry Bailey Julia Pounds ...

DTIC Science & Technology

36
Comparing Different Accounts of Inversion Errors in Children's Non-Subject Wh-Questions: "What Experimental Data Can Tell Us?"
2006-08-01

This study investigated different accounts of children's acquisition of non-subject wh-questions. Questions using each of 4 wh-words ("what," "who," "how" and "why"), and 3 auxiliaries (BE, DO and CAN) in 3sg and 3pl form were elicited from 28 children aged 3;6-4;6. Rates of non-inversion error ("Who she is hitting?") were found not to differ by wh-word, ...

ERIC Educational Resources Information Center

37
Accuracy and quality assessment of 454 GS-FLX Titanium pyrosequencing
2011-05-19

BackgroundThe rapid evolution of 454 GS-FLX sequencing technology has not been accompanied by a reassessment of the quality and accuracy of the sequences obtained. Current strategies for decision-making and error-correction are based on an initial analysis by Huse et al. in 2007, for the older GS20 system based on experimental sequences. We analyze here the quality of 454 ...

PubMed Central

38
Improving Swift-XRT positions of GRBs
2008-05-22

Since GRBs fade rapidly, it is important to publish accurate, precise positions at early times. For Swift-detected bursts, the best promptly available position is most commonly the X-ray Telescope (XRT) position. We present two processes, developed by the Swift team at Leicester, which are now routinely used to improve the precision ...

Energy Citations Database

39
Electric field meter with a dipole antenna in an elliptically polarized electric field
1994-07-01

A model of an electric field meter with a dipole antenna is analyzed. The model takes into account the fact that the meter incorporates other elements with a conducting surface in addition to the dipole antenna, viz.: a matching device, a signal cable, and a voltmeter. Alternative forms of the measurement equation are obtained, which differ in the error ...

Energy Citations Database

40
High Accuracy Airborne Differential GPS Positioning Using a Multi-Receiver Configuration
1994-01-01

Precise airborne DGPS positioning using a multi-receiver configuration is investigated with the emphasis on the centimetre level accuracy over large operational areas. The critical errors from the atmosphere, orbit, Selective Availability and multipath are reviewed and analyzed. The effects of these errors on the ...

E-print Network

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41
Evaluation Of Statistical Models For Forecast Errors From The HBV-Model
2009-04-01

Three statistical models for the forecast errors for inflow to the Langvatn reservoir in Northern Norway have been constructed and tested according to how well the distribution and median values of the forecasts errors fit to the observations. For the first model observed and forecasted inflows were transformed by the Box-Cox transformation before a first ...

NASA Astrophysics Data System (ADS)

42
System Performance, Error Rates, and Training Time for ...
1980-05-01

... Corresponding to each radar training sector, there is a manual controller position, a ghost position, and three pilot positions. ...

DTIC Science & Technology

43
Dependence of fluence errors in dynamic IMRT on leaf-positional errors varying with time and leaf number

Dependence of fluence errors in dynamic IMRT on leaf-positional errors varying with time and leaf leaf positions multiple times per second and corrects them if they deviate from ideal positions by a value greater than TOL. The magnitude of leaf-positional ...

E-print Network

44
A SNP discovery method to assess variant allele probability from next-generation resequencing data
2010-02-01

Accurate identification of genetic variants from next-generation sequencing (NGS) data is essential for immediate large-scale genomic endeavors such as the 1000 Genomes Project, and is crucial for further genetic analysis based on the discoveries. The key challenge in single nucleotide polymorphism (SNP) discovery is to distinguish true individual variants (occurring at a low frequency) from ...

PubMed Central

45
and
2007-01-01

This paper examines the impact of accounting information events (i.e., earnings announcements and analysts � earnings forecasts) on the profitability of a pairs trading strategy proposed by Gatev et al. (2006). Using a portfolio of U.S. stock pairs between 1981 and 2006, we find that pairs trades are frequently triggered around accounting information ...

E-print Network

46
Error Analysis of Hydrographic Positioning and the Application of Least Squares.
1980-01-01

Repeatable accuracy of hydrographic positioning was examined in terms of the two-dimensional normal distribution function which results in an elliptical error figure. The error ellipse was discussed, and two methods for conversion of elliptical errors to ...

National Technical Information Service (NTIS)

47
Position error correcting method and apparatus for industrial robot
1987-06-02

A method is described of correcting a position error of an industrial robot. The method comprises: operating the industrial robot according to position command values, thereby moving a measurement point provided on the industrial robot to a first position; measuring the position values of the ...

Energy Citations Database

48
Biological inspiration used for robots motion synthesis.
2009-08-07

This work presents a biologically inspired method of gait generation. Bipedal gait pattern (for hip and knee joints) was taken into account giving the reference trajectories in a learning task. The four coupled oscillators were taught to generate the outputs similar to those in a human gait. After applying the correction functions the obtained generation method was validated ...

PubMed

49
Supply Inventory Management: Accountability and Control of ...
2002-12-06

... The comparison of inventory records with the physical inventories showed count errors. By applying statistical weighting ...

DTIC Science & Technology

50
Evaluation of A System For Tracking Patients At Forward ...
1994-12-01

... TRACKING, PROTOTYPES, ERRORS, MILITARY MEDICINE, MANUAL OPERATION, MEDICAL PERSONNEL, EVACUATION, ACCOUNTABILITY. ...

DTIC Science & Technology

51
Statement of Need (SON) Positive Verification of Minuteman ...
1988-05-10

... coding. Whatever the error source, once it occurs, the system cannot identify the error until another coding is attempted. ...

DTIC Science & Technology

52
RESEARCH MEMORANDUM - NASA

errors of the measuring instruments,recording instruments,position- error calibrations,and time lag. The methods and instrumentsemployed ...

NASA Website

53
Passive Trilateration Positioning Procedure Error Analysis.
1981-08-01

... The network consists of an aircraft, DME ground based units and an independent ground based tracker. The primary error ...

DTIC Science & Technology

54
MODIS Website

The error in the retrieved atmospheric boundary layer temperature is positively correlated with aerosol optical depth (AOD) and estimated errors of skin ...

NASA Website

55
GCN 583

Negative errors are Poisson only; positive errors are standard deviation of two or more measures. The astrometry in this file is based on linear plate ...

NASA Website

56
Error Statistics for Astrogeodetic Positions for an RGSS Test ...
1981-07-01

... classical' surveys. In its research, ETL requires a more accurate adjustment of errors obtained from conventional methods. The ...

DTIC Science & Technology

57
Error Propagation in Two-Photo Intersection.
1972-02-01

... Descriptors : (*PHOTOGRAPHY, ERRORS), PANORAMIC CAMERAS, PHOTOGRAPHIC IMAGES, POSITION FINDING, MATHEMATICAL MODELS ...

DTIC Science & Technology

58
A Comparative Study of Fire Control Target State Estimators.
1978-11-01

... KALMAN FILTERING, ERROR ANALYSIS, ERRORS, STATISTICAL PROCESSES, TARGET POSITION INDICATORS, INERTIAL MEASUREMENT ...

DTIC Science & Technology

59
DIOPHANTINE GEOMETRY OVER GROUPS V: QUANTIFIER ELIMINATION Z. Sela1;2 posted October 9, 2001 This paper is the fifth in a

(sys) #6;30 (extrap)) - i(249 #6; 15 (stat) #6;20 (sys) #6;30 (extrap)) MeV. Systematic errors arise roughly position (MeV) Eqns. (10)-(12) 542 #6; 7 #6; 15 #6; 30 (extrap) - i(249 #6; 15 #6; 20 #6; 30 (extrap)) Eqn. (13) 570 error (30 (extrap) MeV) accounts for the errors in the extrapolation ...

E-print Network

60
Spatial Statistics of Instrument-Limited Angular Measurement ...
1972-10-02

... affect the error in measuring the relative position of target ... angular instrument errors ... and phase errors across the aperture are small, angle measure- ...

DTIC Science & Technology

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61
Communication Strategies for Correcting Errors - Research ...

... error" by the National Transportation Safety Board (NTSB) and was found to ... that supported a positive crew climate, such as strong hints and suggestions . ... the strategies most effective for mitigating errors in the cockpit, ...

NASA Website

62
Sample Positioning Effects in X-Ray Spectrometry.
1977-01-01

Instrument error due to variation in sample position in a crystal x-ray spectrometer can easily exceed the total instrumental error. Lack of reproducibility in sample position in the x-ray optics is the single largest source of system error. The factors t...

National Technical Information Service (NTIS)

63
Computer Error Analysis of Tropospheric Effects for the NAVSTAR Global Positioning System.
1975-01-01

A model for tropospheric delay of a radio signal from a satellite, is used to perform a three-dimensional tropospheric error analysis for the NAVSTAR Global Positioning System (GPS). A program to evaluate the error as a function of satellite positions and...

National Technical Information Service (NTIS)

64
Effects of false positives
1973-01-01

One of the problems of making safeguards decisions based on material balance accounting or shipper-receiver differences is that there is always an unavoidable possibility that chance errors of measurement alone will lead to positive conclusions. This problems becomes particularly acute when system designs or inspection ...

Energy Citations Database

65
THE TRI-FRAME MODEL
2007-12-14

The tri-frame model gives mathematical expression to the transcription and translation processes, and considers all three reading frames. RNA polymerases transcribe DNA in single nucleotide increments, but ribosomes translate mRNA in pairings of three (triplets or codons). The set of triplets in the mRNA, starting with the initiation codon (usually AUG) defines the open reading frame (ORF). Since ...

PubMed Central

66
Improved Ionospheric Correction for DGPS by taking into account the Horizontal Gradient Effect over the Equatorial Region
2010-01-01

Improved Ionospheric Correction for DGPS by taking into account the Horizontal Gradient Effect over the Equatorial Region K Nagarajoo Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Johor Darul Takzim Email: karthi@uthm.edu.my DGPS is a system where the range error at a reference station will be eliminated from the range measurement at the user, which ...

NASA Astrophysics Data System (ADS)

67
Perceived touch location is coded using a gaze signal.
2011-05-11

The location of a touch to the skin, first coded in body coordinates, may be transformed into retinotopic coordinates to facilitate visual-tactile integration. In order for the touch location to be transformed into a retinotopic reference frame, the location of the eyes and head must be taken into account. Previous studies have found eye position-related ...

PubMed

68
The impact of measurement errors in the identification of regulatory networks
2009-12-13

BackgroundThere are several studies in the literature depicting measurement error in gene expression data and also, several others about regulatory network models. However, only a little fraction describes a combination of measurement error in mathematical regulatory networks and shows how to identify these networks under different rates of ...

PubMed Central

69
Interferometric correction system for a numerically controlled machine
1978-01-01

An interferometric correction system for a numerically controlled machine is provided to improve the positioning accuracy of a machine tool, for example, for a high-precision numerically controlled machine. A laser interferometer feedback system is used to monitor the positioning of the machine tool which is being moved by command pulses to a ...

DOE Information Bridge

70
UNIVERSITY OF MINNESOTA Enterprise Financial System: Implementation

Brief Description of Inquiry Accounts Payable: Inquiries Accounts Payable, Vouchers, Add/Update, Regular Entry Voucher information Accounts Payable, Vouchers, Maintain, Voucher Build Error Detail Correct voucher batch errors or delete vouchers with errors ...

E-print Network

71
Net Weight Issue LLNL DOE-STD-3013 Containers
2008-01-16

The following position paper will describe DOE-STD-3013 container sets No.L000072 and No.L000076, and how they are compliant with DOE-STD-3013-2004. All masses of accountable nuclear materials are measured on LLNL certified balances maintained under an MC&A Program approved by DOE/NNSA LSO. All accountability balances are ...

DOE Information Bridge

72
A GPS/GNSS dense network used to monitor ionospheric positioning error
2010-12-01

GPS/GNSS networks are, for the last few years, quickly expanding their density all over the surface of the globe. The present idea is to use this density in order to assess the effect of ionospheric disturbances on relative positioning but also to monitor their propagation patterns. Local variability in the ionospheric electron density can dramaticaly affect the reliability of ...

NASA Astrophysics Data System (ADS)

73
Illumination stability for high-repetition-rate laser facilities in direct-drive inertial confinement fusion
2011-05-01

The illumination uniformity of a spherical target is of fundamental importance in direct-drive inertial confinement fusion. The laser intensity asymmetry is studied here using numerical calculations, taking into account target positioning errors and laser system shot-to-shot fluctuations. The optimisation of a laser beam configuration ...

NASA Astrophysics Data System (ADS)

74
A Synthetic Test of Precision in GPS/Acoustic Measurements of Seafloor Positioning
2004-12-01

In this decade, much efforts have been made in detecting seafloor movement using GPS/Acoustic ranging method. GPS/Acoustic measurement consists of two parts, one is the positioning of a transducer at sea surface using K-GPS and the other is measuring travel-time or slant-range between the transducer and transponders put on ocean bottom using acoustic ranging. Currently ...

NASA Astrophysics Data System (ADS)

75
SLIDE-POSITION ERRORS DEGRADE MACHINED OPTICAL ...
1976-04-01

... Title : SLIDE-POSITION ERRORS DEGRADE MACHINED OPTICAL COMPONENT QUALITY, IN: NBS-SP-435, P75-89. ...

DTIC Science & Technology

76
Position Errors of the Service Airspeed Installations of 10 ...
1949-06-01

... Descriptive Note : Technical note. ... of the static-pressure or "position" errors of the ... of the installations was calibrated under steady flight conditions by ...

DTIC Science & Technology

77
JPL Robotics: Image Gallery - JPL Robotics - NASA

EPEC: End-Effector Position Error Compensation - EPEC provides vision-based correction of. EPEC: End-Effector Position Error Compensation ...

NASA Website

78
Comparison Study and Sensitivity Analysis of Flight Test Techniques for Air Data Position Error Correction in Small Aircraft
2011-01-01

Comparison Study and Sensitivity Analysis of Flight Test Techniques for Air Data Position Error Correction in Small Aircraft

NASA Astrophysics Data System (ADS)

79
Calibration of Relative Position Errors of the Range Capable ...
1975-01-01

... Title : Calibration of Relative Position Errors of the Range Capable Data Link and Loran-C. Descriptive Note : Technical rept. ...

DTIC Science & Technology

80
Boom Probe Position Error Corrections for Sea King Mk 50 ...
1981-07-01

... Abstract : Position error has been determined for a nose-boom mounted pitot static probe installed on a Sea King Mk. 50 helicopter. ...

DTIC Science & Technology

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81
Ensemble codes involving hippocampal neurons are at risk during delayed?performance?tests
1996-11-26

Multielectrode recording techniques were used to record ensemble activity from 10 to 16 simultaneously active CA1 and CA3 neurons in the rat hippocampus during performance of a spatial delayed-nonmatch-to-sample task. Extracted sources of variance were used to assess the nature of two different types of errors that accounted for 30% of total trials. ...

PubMed Central

82
Multiple-point statistical room correction for audio reproduction: minimum mean squared error correction filtering.
2009-04-01

This paper treats the problem of correction of loudspeaker and room responses using a single source. The objective is to obtain a linear correction filter, which is robust with respect to listener movement within a predefined region-of-interest. The correction filter is based on estimated impulse responses, obtained at several positions, and a linear minimum mean squared ...

PubMed

83
Derivation of three closed loop kinematic velocity models using normalized quaternion feedback for an autonomous redundant manipulator with application to inverse kinematics
1993-04-01

The report discusses the orientation tracking control problem for a kinematically redundant, autonomous manipulator moving in a three dimensional workspace. The orientation error is derived using the normalized quaternion error method of Ickes, the Luh, Walker, and Paul error method, and a method suggested here utilizing the Rodrigues ...

Energy Citations Database

84
Retail Inventory Management When Records are Inaccurate
2005-01-01

Inventory record inaccuracy is a significant problem for retailers using automated inventory management systems. While investments in preventative and corrective measures can be effective remedies, gains can also be achieved through inventory management tools that account for record errors. In this paper, we consider intelligent inventory management tools ...

E-print Network

85
Optimization of sample absorbance for quantitative analysis in the presence of pathlength error in the IR and NIR regions
1985-05-01

Optical absorbance levels for quantiative analysis in the presence of photometric error have been described in the past. In newer instrumentation, such as FT-IR and NIRA spectrometers, the photometric error is no longer limiting. In these instruments, pathlength error due to cell or sampling irreproducibility is often a major concern. ...

Energy Citations Database

86
Computer analysis of world chess champions
2006-01-01

Abstract. Who is the best chess player of all time? Chess players are often interested in this question that has never been answered authoritatively, because it requires comparison between chess players of different eras who never met across the board. In this paper, we attempt such a comparison based on the evaluation with a chess playing program of games played by the world chess champions in ...

E-print Network

87
Spatio-temporal Dynamics of Error Processing Dysfunctions in Major Depressive Disorder
2008-02-01

ContextDepression is characterized by executive dysfunctions and abnormal reactions to errors; however, little is known about the brain mechanisms that underlie these deficits.ObjectiveTo examine whether abnormal reactions to errors in patients with major depressive disorder (MDD) are associated with exaggerated paralimbic activation and/or a failure to ...

PubMed Central

88
POSITION INDICATING CIRCUITRY FOR 40 MM TRACKING ...
1961-08-01

... (Author). Descriptors : *CIRCUITS, *TARGET POSITION INDICATORS, *TRACKING, DETERMINATION, ERRORS, GUN MOUNTS, TARGETS. ...

DTIC Science & Technology

89
Multi-Robot Position Tracking
2003-12-11

... Finally, a comparison of the robot navigation error to that of the proposed camera system is presented. Descriptors : *ROBOTS, *POSITION FINDING ...

DTIC Science & Technology

90
Level 1 Georectification and Registration Algorithm Theoretical Basis

ICC are used to account for errors in the navigation data during ...... wrong decision as error of the 1st kind. It means we may detect a point with random ...

NASA Website

91
Object-oriented and traditional precipitation verification of the 2004--2005 SPC/NSSL spring programs
2008-01-01

Operational models have tended to be designed to produce smoothly varying quantitative precipitation forecast (QPF). The implementation of higher resolution mesoscale meteorological models has created a need to improve the techniques used to verify these model forecasts, because traditional verification metrics such as the equitable threat score and critical success index (ETS and CSI) penalize ...

NASA Astrophysics Data System (ADS)

92
Global Positioning System (GPS) Error Source Prediction.
2000-01-01

With the initiation of the navigation accuracy prediction algorithm used to estimate the amount of GPS solution (location and time) error for receivers, the capability to accurately predict solution errors due to the major GPS error sources is growing. Al...

National Technical Information Service (NTIS)

93
Application of Statistical Smoothing Techniques to Inertial Navigation.
1968-01-01

All inertial navigation systems are excited by random error inputs such as gyro drift rates, accelerometer errors etc. These errors make the position and velocity errors of the inertial navigator grow unbounded with time if no external measurements are ma...

National Technical Information Service (NTIS)

94
A Generic Inertial Navigation System Model for Computer ...
1990-09-01

... 13 Page 4. WSRL-TM-30/90 6.3 Initial misalignment error 13 6.3.1 Position error 13 ... 24 4. Initial velocity error 25 5. Initial misalignment error 26 ...

DTIC Science & Technology

95
Position Error Propagation in the Simplex Strapdown Navigation System.
1976-01-01

The results of an analysis of the effects of deterministic error sources on position error in the simplex strapdown navigation system were documented. Improving the long term accuracy of the system was addressed in two phases: understanding and controllin...

National Technical Information Service (NTIS)

96
Sensitivity of Mars surface navigation to timing errors
2003-01-01

This study will show that the surface asset positioning process is robust and relatively insensitive

NASA Technical Reports Server (NTRS)

97
Inertial Survey Adjustment,
1981-06-05

... (Author). Descriptors : *ERROR ANALYSIS, *LEAST SQUARES METHOD, *GEODETIC SURVEYS, *AREA COVERAGE, ALGORITHMS, POSITION ...

DTIC Science & Technology

98
FAM blur

A hysteresis affect was noted on some occasions with redundant moves. .... Investigate hysteresis error. Since position is determined by the frictionless ...

NASA Website

99
Accurate Optical Reference Catalogs
2006-08-01

... Descriptors : *CATALOGS, *POSITION(LOCATION), *RADIO SOURCES( ASTRONOMY), *MOTION, *STARS, ERRORS, TELESCOPES ...

DTIC Science & Technology

100
AN ANALYSIS OF PANORAMIC PHOTOGRAMMETRY USING ...
1962-12-01

... AERIAL), (*MAPPING, ERRORS), (*PANORAMIC, POSITION FINDING ... EXPOSURE(PHYSIOLOGY), IMAGES, MATHEMATICAL, COMPUTERS ...

DTIC Science & Technology

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