Science.gov

Sample records for polynomial-based probe-specific correction

  1. Complex Chebyshev-polynomial-based unified model (CCPBUM) neural networks

    NASA Astrophysics Data System (ADS)

    Jeng, Jin-Tsong; Lee, Tsu-Tian

    1998-03-01

    In this paper, we propose complex Chebyshev Polynomial Based unified model neural network for the approximation of complex- valued function. Based on this approximate transformable technique, we have derived the relationship between the single-layered neural network and multi-layered perceptron neural network. It is shown that the complex Chebyshev Polynomial Based unified model neural network can be represented as a functional link network that are based on Chebyshev polynomial. We also derived a new learning algorithm for the proposed network. It turns out that the complex Chebyshev Polynomial Based unified model neural network not only has the same capability of universal approximator, but also has faster learning speed than conventional complex feedforward/recurrent neural network.

  2. DNA probe specific for Legionella pneumophila.

    PubMed Central

    Grimont, P A; Grimont, F; Desplaces, N; Tchen, P

    1985-01-01

    A procedure for preparing a DNA probe to be used in the specific detection of Legionella pneumophila by dot or colony hybridization has been devised. When total DNA from L. pneumophila was used as a radioactive probe, cross-hybridization occurred with DNA from many other species belonging to various families (including Legionellaceae, Enterobacteriaceae, Pseudomonadaceae, and Vibrionaceae). Cross-hybridizing restriction fragments in L. pneumophila ATCC 33152 DNA were identified on Southern blots. When unlabeled DNA from strain ATCC 33152 was cleaved by endonuclease BamHI, the DNA fragments cross-hybridizing with the labeled DNA from all of the other species and genera tested (or with Escherichia coli 16 + 23 S RNA) had a size of 21.4 and 16.2 kilobase pairs (major bands) and 28.0, 12.8, and 10.1 kilobase pairs (minor bands). BamHI restriction fragments of L. pneumophila DNA deprived of the cross-hybridizing fragments were pooled and used as a probe for the detection of L. pneumophila. This probe proved to be specific for L. pneumophila in colony and dot hybridization. It can potentially be used for the detection of L. pneumophila in clinical and water samples. The procedure described can be readily applied to the preparation of probes specific for phylogenetically isolated bacterial species other than L. pneumophila. Images PMID:3980693

  3. Fast complex memory polynomial-based adaptive digital predistorter

    NASA Astrophysics Data System (ADS)

    Singh Sappal, Amandeep; Singh Patterh, Manjeet; Sharma, Sanjay

    2011-07-01

    Today's 3G wireless systems require both high linearity and high power amplifier (PA) efficiency. The high peak-to-average ratios of the digital modulation schemes used in 3G wireless systems require that the RF PA maintain high linearity over a large range while maintaining this high efficiency; these two requirements are often at odds with each other with many of the traditional amplifier architectures. In this article, a fast and easy-to-implement adaptive digital predistorter has been presented for Wideband Code Division Multiplexed signals using complex memory polynomial work function. The proposed algorithm has been implemented to test a Motorola LDMOSFET PA. The proposed technique also takes care of the memory effects of the PA, which have been ignored in many proposed techniques in the literature. The results show that the new complex memory polynomial-based adaptive digital predistorter has better linearisation performance than conventional predistortion techniques.

  4. Discrimination Power of Polynomial-Based Descriptors for Graphs by Using Functional Matrices.

    PubMed

    Dehmer, Matthias; Emmert-Streib, Frank; Shi, Yongtang; Stefu, Monica; Tripathi, Shailesh

    2015-01-01

    In this paper, we study the discrimination power of graph measures that are based on graph-theoretical matrices. The paper generalizes the work of [M. Dehmer, M. Moosbrugger. Y. Shi, Encoding structural information uniquely with polynomial-based descriptors by employing the Randić matrix, Applied Mathematics and Computation, 268(2015), 164-168]. We demonstrate that by using the new functional matrix approach, exhaustively generated graphs can be discriminated more uniquely than shown in the mentioned previous work.

  5. Efficient polynomials based method for a temporal stability investigation in a swirling flow stability problem

    NASA Astrophysics Data System (ADS)

    Dragomirescu, Florica Ioana

    2012-11-01

    The main motivation for a temporal stability investigation of initially localized perturbations in a swirling flow stability problem consists in pointing out the critical frequencies at which instability can sets in, an important key in predicting and understanding the flow particularities. The linearized disturbance equations define a second order ordinary differential equation with non-constant coefficients which we solve in order to determine the critical frequency in different physical parameters spaces. A non-classical polynomials based spectral method is proposed for the numerical treatment of the resulting generalized eigenvalue problem governing the stability of the flow. Numerical investigation are performed in the inviscid case for a moderate level of swirl and dominant temporal instability modes are retrieved for each Fourier component pair. The obtained values of the growth rate associated with the most amplified wavenumber are compared with existing inviscid temporal instability evaluations and good agreements are found.

  6. Trade off between variable and fixed size normalization in orthogonal polynomials based iris recognition system.

    PubMed

    Krishnamoorthi, R; Anna Poorani, G

    2016-01-01

    Iris normalization is an important stage in any iris biometric, as it has a propensity to trim down the consequences of iris distortion. To indemnify the variation in size of the iris owing to the action of stretching or enlarging the pupil in iris acquisition process and camera to eyeball distance, two normalization schemes has been proposed in this work. In the first method, the iris region of interest is normalized by converting the iris into the variable size rectangular model in order to avoid the under samples near the limbus border. In the second method, the iris region of interest is normalized by converting the iris region into a fixed size rectangular model in order to avoid the dimensional discrepancies between the eye images. The performance of the proposed normalization methods is evaluated with orthogonal polynomials based iris recognition in terms of FAR, FRR, GAR, CRR and EER.

  7. Correction

    NASA Astrophysics Data System (ADS)

    1995-04-01

    Seismic images of the Brooks Range, Arctic Alaska, reveal crustal-scale duplexing: Correction Geology, v. 23, p. 65 68 (January 1995) The correct Figure 4A, for the loose insert, is given here. See Figure 4A below. Corrected inserts will be available to those requesting copies of the article from the senior author, Gary S. Fuis, U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025. Figure 4A. P-wave velocity model of Brooks Range region (thin gray contours) with migrated wide-angle reflections (heavy red lines) and migreated vertical-incidence reflections (short black lines) superimposed. Velocity contour interval is 0.25 km/s; 4,5, and 6 km/s contours are labeled. Estimated error in velocities is one contour interval. Symbols on faults shown at top are as in Figure 2 caption.

  8. Corrections.

    PubMed

    2015-07-01

    Lai Y-S, Biedermann P, Ekpo UF, et al. Spatial distribution of schistosomiasis and treatment needs in sub-Saharan Africa: a systematic review and geostatistical analysis. Lancet Infect Dis 2015; published online May 22. http://dx.doi.org/10.1016/S1473-3099(15)00066-3—Figure 1 of this Article should have contained a box stating ‘100 references added’ with an arrow pointing inwards, rather than a box stating ‘199 records excluded’, and an asterisk should have been added after ‘1473 records extracted into GNTD’. Additionally, the positioning of the ‘§ and ‘†’ footnotes has been corrected in table 1. These corrections have been made to the online version as of June 4, 2015.

  9. Correction.

    PubMed

    2016-02-01

    In the article by Guessous et al (Guessous I, Pruijm M, Ponte B, Ackermann D, Ehret G, Ansermot N, Vuistiner P, Staessen J, Gu Y, Paccaud F, Mohaupt M, Vogt B, Pechère-Bertschi A, Martin PY, Burnier M, Eap CB, Bochud M. Associations of ambulatory blood pressure with urinary caffeine and caffeine metabolite excretions. Hypertension. 2015;65:691–696. doi: 10.1161/HYPERTENSIONAHA.114.04512), which published online ahead of print December 8, 2014, and appeared in the March 2015 issue of the journal, a correction was needed.One of the author surnames was misspelled. Antoinette Pechère-Berstchi has been corrected to read Antoinette Pechère-Bertschi.The authors apologize for this error.

  10. Polynomial-based approximate solutions to the Boussinesq equation near a well

    NASA Astrophysics Data System (ADS)

    Telyakovskiy, Aleksey S.; Kurita, Satoko; Allen, Myron B.

    2016-10-01

    This paper presents a method for constructing polynomial-based approximate solutions to the Boussinesq equation with cylindrical symmetry. This equation models water injection at a single well in an unconfined aquifer; as a sample problem we examine recharge of an initially empty aquifer. For certain injection regimes it is possible to introduce similarity variables, reducing the original problem to a boundary-value problem for an ordinary differential equation. The approximate solutions introduced here incorporate both a singular part to model the behavior near the well and a polynomial part to model the behavior in the far field. Although the nonlinearity of the problem prevents decoupling of the singular and polynomial parts, the paper presents an approach for calculating the solution based on its spatial moments. This approach yields closed-form expressions for the position of the wetting front and for the form of the phreatic surface. Comparison with a highly accurate numerical solution verifies the accuracy of the newly derived approximate solutions.

  11. Correction

    NASA Astrophysics Data System (ADS)

    1998-12-01

    Alleged mosasaur bite marks on Late Cretaceous ammonites are limpet (patellogastropod) home scars Geology, v. 26, p. 947 950 (October 1998) This article had the following printing errors: p. 947, Abstract, line 11, “sepia” should be “septa” p. 947, 1st paragraph under Introduction, line 2, “creep” should be “deep” p. 948, column 1, 2nd paragraph, line 7, “creep” should be “deep” p. 949, column 1, 1st paragraph, line 1, “creep” should be “deep” p. 949, column 1, 1st paragraph, line 5, “19774” should be “1977)” p. 949, column 1, 4th paragraph, line 7, “in particular” should be “In particular” CORRECTION Mammalian community response to the latest Paleocene thermal maximum: An isotaphonomic study in the northern Bighorn Basin, Wyoming Geology, v. 26, p. 1011 1014 (November 1998) An error appeared in the References Cited. The correct reference appears below: Fricke, H. C., Clyde, W. C., O'Neil, J. R., and Gingerich, P. D., 1998, Evidence for rapid climate change in North America during the latest Paleocene thermal maximum: Oxygen isotope compositions of biogenic phosphate from the Bighorn Basin (Wyoming): Earth and Planetary Science Letters, v. 160, p. 193 208.

  12. Chebyshev-polynomial-based (CPB) unified model neural network for the worst-case identification of nonlinear systems H∞ problem

    NASA Astrophysics Data System (ADS)

    Jeng, Jin-Tsong; Lee, Tsu-Tian

    1998-03-01

    In this paper, we propose a neural network model with a faster learning speed and a good approximate capability in the function approximation for solving worst-case identification of nonlinear systems H(infinity ) problems. Specifically, via the approximate transformable technique, we develop a Chebyshev Polynomials Based unified model neural network for solving the worst-case identification of nonlinear systems H(infinity ) problems. Based on this approximate transformable technique, the relationship between the single-layered neural network and multi-layered perceptron neural network is derived. It is shown that the Chebyshev Polynomials Based unified model neural network can be represented as a functional link network that is based on Chebyshev polynomials. We also derive a new learning algorithm such that the infinity norm of the transfer function from the input to the output is under a prescribed level. It turns out that the Chebyshev Polynomials Based unified model neural network not only has the same capability of universal approximator, but also has a faster learning speed than multi-layered perceptron or the recurrent neural network in the deterministic worst-case identification of nonlinear systems H(infinity ) problems.

  13. Assessing probe-specific dye and slide biases in two-color microarray data.

    PubMed

    Lu, Ruixiao; Lee, Geun-Cheol; Shultz, Michael; Dardick, Chris; Jung, Kihong; Phetsom, Jirapa; Jia, Yi; Rice, Robert H; Goldberg, Zelanna; Schnable, Patrick S; Ronald, Pamela; Rocke, David M

    2008-07-19

    A primary reason for using two-color microarrays is that the use of two samples labeled with different dyes on the same slide, that bind to probes on the same spot, is supposed to adjust for many factors that introduce noise and errors into the analysis. Most users assume that any differences between the dyes can be adjusted out by standard methods of normalization, so that measures such as log ratios on the same slide are reliable measures of comparative expression. However, even after the normalization, there are still probe specific dye and slide variation among the data. We define a method to quantify the amount of the dye-by-probe and slide-by-probe interaction. This serves as a diagnostic, both visual and numeric, of the existence of probe-specific dye bias. We show how this improved the performance of two-color array analysis for arrays for genomic analysis of biological samples ranging from rice to human tissue. We develop a procedure for quantifying the extent of probe-specific dye and slide bias in two-color microarrays. The primary output is a graphical diagnostic of the extent of the bias which called ECDF (Empirical Cumulative Distribution Function), though numerical results are also obtained. We show that the dye and slide biases were high for human and rice genomic arrays in two gene expression facilities, even after the standard intensity-based normalization, and describe how this diagnostic allowed the problems causing the probe-specific bias to be addressed, and resulted in important improvements in performance. The R package LMGene which contains the method described in this paper has been available to download from Bioconductor.

  14. Assessing probe-specific dye and slide biases in two-color microarray data

    PubMed Central

    Lu, Ruixiao; Lee, Geun-Cheol; Shultz, Michael; Dardick, Chris; Jung, Kihong; Phetsom, Jirapa; Jia, Yi; Rice, Robert H; Goldberg, Zelanna; Schnable, Patrick S; Ronald, Pamela; Rocke, David M

    2008-01-01

    Background A primary reason for using two-color microarrays is that the use of two samples labeled with different dyes on the same slide, that bind to probes on the same spot, is supposed to adjust for many factors that introduce noise and errors into the analysis. Most users assume that any differences between the dyes can be adjusted out by standard methods of normalization, so that measures such as log ratios on the same slide are reliable measures of comparative expression. However, even after the normalization, there are still probe specific dye and slide variation among the data. We define a method to quantify the amount of the dye-by-probe and slide-by-probe interaction. This serves as a diagnostic, both visual and numeric, of the existence of probe-specific dye bias. We show how this improved the performance of two-color array analysis for arrays for genomic analysis of biological samples ranging from rice to human tissue. Results We develop a procedure for quantifying the extent of probe-specific dye and slide bias in two-color microarrays. The primary output is a graphical diagnostic of the extent of the bias which called ECDF (Empirical Cumulative Distribution Function), though numerical results are also obtained. Conclusion We show that the dye and slide biases were high for human and rice genomic arrays in two gene expression facilities, even after the standard intensity-based normalization, and describe how this diagnostic allowed the problems causing the probe-specific bias to be addressed, and resulted in important improvements in performance. The R package LMGene which contains the method described in this paper has been available to download from Bioconductor. PMID:18638416

  15. Accelerated solution of non-linear flow problems using Chebyshev iteration polynomial based RK recursions

    SciTech Connect

    Lorber, A.A.; Carey, G.F.; Bova, S.W.; Harle, C.H.

    1996-12-31

    The connection between the solution of linear systems of equations by iterative methods and explicit time stepping techniques is used to accelerate to steady state the solution of ODE systems arising from discretized PDEs which may involve either physical or artificial transient terms. Specifically, a class of Runge-Kutta (RK) time integration schemes with extended stability domains has been used to develop recursion formulas which lead to accelerated iterative performance. The coefficients for the RK schemes are chosen based on the theory of Chebyshev iteration polynomials in conjunction with a local linear stability analysis. We refer to these schemes as Chebyshev Parameterized Runge Kutta (CPRK) methods. CPRK methods of one to four stages are derived as functions of the parameters which describe an ellipse {Epsilon} which the stability domain of the methods is known to contain. Of particular interest are two-stage, first-order CPRK and four-stage, first-order methods. It is found that the former method can be identified with any two-stage RK method through the correct choice of parameters. The latter method is found to have a wide range of stability domains, with a maximum extension of 32 along the real axis. Recursion performance results are presented below for a model linear convection-diffusion problem as well as non-linear fluid flow problems discretized by both finite-difference and finite-element methods.

  16. Application of the Polynomial-Based Least Squares and Total Least Squares Models for the Attenuated Total Reflection Fourier Transform Infrared Spectra of Binary Mixtures of Hydroxyl Compounds.

    PubMed

    Shan, Peng; Peng, Silong; Zhao, Yuhui; Tang, Liang

    2016-03-01

    An analysis of binary mixtures of hydroxyl compound by Attenuated Total Reflection Fourier transform infrared spectroscopy (ATR FT-IR) and classical least squares (CLS) yield large model error due to the presence of unmodeled components such as H-bonded components. To accommodate these spectral variations, polynomial-based least squares (LSP) and polynomial-based total least squares (TLSP) are proposed to capture the nonlinear absorbance-concentration relationship. LSP is based on assuming that only absorbance noise exists; while TLSP takes both absorbance noise and concentration noise into consideration. In addition, based on different solving strategy, two optimization algorithms (limited-memory Broyden-Fletcher-Goldfarb-Shanno (LBFGS) algorithm and Levenberg-Marquardt (LM) algorithm) are combined with TLSP and then two different TLSP versions (termed as TLSP-LBFGS and TLSP-LM) are formed. The optimum order of each nonlinear model is determined by cross-validation. Comparison and analyses of the four models are made from two aspects: absorbance prediction and concentration prediction. The results for water-ethanol solution and ethanol-ethyl lactate solution show that LSP, TLSP-LBFGS, and TLSP-LM can, for both absorbance prediction and concentration prediction, obtain smaller root mean square error of prediction than CLS. Additionally, they can also greatly enhance the accuracy of estimated pure component spectra. However, from the view of concentration prediction, the Wilcoxon signed rank test shows that there is no statistically significant difference between each nonlinear model and CLS.

  17. Application of a nanoflare probe specific to a latency associated transcript for isolation of KHV latently infected cells

    PubMed Central

    Reed, Aimee N.; Putman, Timothy; Sullivan, Christopher; Jin, Ling

    2015-01-01

    One of the unique features of herpesvirus infection is latent infection following an initial exposure, which is characterized by viral genome persistence in a small fraction of cells within the latently infected tissue. Investigation of the mechanisms of herpesvirus latency has been very challenging in tissues with only a small fraction of cells that are latently infected. Cyprinid herpesvirus 3, also known as koi herpesvirus (KHV), is an important and deadly pathogen of koi and common carp, Cyprinus carpio. Acute infection can cause up to 100% mortality in exposed fish, and fish that survive the infection become latently infected. KHV becomes latent in a small percentage of B lymphocytes and can reactivate under stressful conditions. During latency, KHV ORF6 transcript is expressed in the latently infected B lymphocytes. In order to study KHV latent infection in cells that are only latently infected, a nanoflare probe specific to ORF6 RNA was used to separate KHV latently infected cells from total peripheral white blood cells (WBC). Using the ORF6 nanoflare probe, less than 1% of peripheral WBC was isolated from KHV latently infected koi. When this enriched population of WBC was examined by real-time PCR specific for KHV, it was estimated that about 1 to 2 copies of viral genome persists in the sorted cells. In addition, KHV ORF6 transcript was shown to be the major transcript expressed during latency by RNA-seq analysis. This study demonstrated that an RNA nanoflare probe could be used to enrich latently infected cells, which can subsequently be used to investigate the molecular mechanisms of KHV latency. PMID:26087404

  18. Political Correctness--Correct?

    ERIC Educational Resources Information Center

    Boase, Paul H.

    1993-01-01

    Examines the phenomenon of political correctness, its roots and objectives, and its successes and failures in coping with the conflicts and clashes of multicultural campuses. Argues that speech codes indicate failure in academia's primary mission to civilize and educate through talk, discussion, thought,166 and persuasion. (SR)

  19. a New Control Points Based Geometric Correction Algorithm for Airborne Push Broom Scanner Images Without On-Board Data

    NASA Astrophysics Data System (ADS)

    Strakhov, P.; Badasen, E.; Shurygin, B.; Kondranin, T.

    2016-06-01

    Push broom scanners, such as video spectrometers (also called hyperspectral sensors), are widely used in the present. Usage of scanned images requires accurate geometric correction, which becomes complicated when imaging platform is airborne. This work contains detailed description of a new algorithm developed for processing of such images. The algorithm requires only user provided control points and is able to correct distortions caused by yaw, flight speed and height changes. It was tested on two series of airborne images and yielded RMS error values on the order of 7 meters (3-6 source image pixels) as compared to 13 meters for polynomial-based correction.

  20. Molecular cytogenetic analysis of Inv Dup(15) chromosomes, using probes specific for the Pradar-Willi/Angelman syndrome region: Clinical implications

    SciTech Connect

    Leana-Cox, J. ); Jenkins, L. ); Palmer, C.G.; Plattner, R. ); Sheppard, L. ); Flejter, W.L. ); Zackowski, J. ); Tsien, F. ); Schwartz, S. )

    1994-05-01

    Twenty-seven cases of inverted duplications of chromosome 15 (inv dup[15]) were investigated by FISH with two DNA probes specific for the Prader-Willi syndrome/Angelman syndrome (PWS/AS) region on proximal 15q. Sixteen of the marker chromosomes displayed two copies of each probe, while in the remaining 11 markers no hybridization was observed. A significant association was found between the presence of this region and an abnormal phenotype (P<.01). This is the largest study to date of inv dup(15) chromosomes, that uses molecular cytogenetic methods and is the first to report a significant association between the presence of a specific chromosomal region in such markers and an abnormal phenotype. 30 refs., 1 fig., 4 tabs.

  1. Corrective work.

    ERIC Educational Resources Information Center

    Hill, Leslie A.

    1978-01-01

    Discusses some general principles for planning corrective instruction and exercises in English as a second language, and follows with examples from the areas of phonemics, phonology, lexicon, idioms, morphology, and syntax. (IFS/WGA)

  2. Jitter Correction

    NASA Technical Reports Server (NTRS)

    Waegell, Mordecai J.; Palacios, David M.

    2011-01-01

    Jitter_Correct.m is a MATLAB function that automatically measures and corrects inter-frame jitter in an image sequence to a user-specified precision. In addition, the algorithm dynamically adjusts the image sample size to increase the accuracy of the measurement. The Jitter_Correct.m function takes an image sequence with unknown frame-to-frame jitter and computes the translations of each frame (column and row, in pixels) relative to a chosen reference frame with sub-pixel accuracy. The translations are measured using a Cross Correlation Fourier transformation method in which the relative phase of the two transformed images is fit to a plane. The measured translations are then used to correct the inter-frame jitter of the image sequence. The function also dynamically expands the image sample size over which the cross-correlation is measured to increase the accuracy of the measurement. This increases the robustness of the measurement to variable magnitudes of inter-frame jitter

  3. A CORRECTION.

    PubMed

    Johnson, D

    1940-03-22

    IN a recently published volume on "The Origin of Submarine Canyons" the writer inadvertently credited to A. C. Veatch an excerpt from a submarine chart actually contoured by P. A. Smith, of the U. S. Coast and Geodetic Survey. The chart in question is Chart IVB of Special Paper No. 7 of the Geological Society of America entitled "Atlantic Submarine Valleys of the United States and the Congo Submarine Valley, by A. C. Veatch and P. A. Smith," and the excerpt appears as Plate III of the volume fist cited above. In view of the heavy labor involved in contouring the charts accompanying the paper by Veatch and Smith and the beauty of the finished product, it would be unfair to Mr. Smith to permit the error to go uncorrected. Excerpts from two other charts are correctly ascribed to Dr. Veatch.

  4. 77 FR 72199 - Technical Corrections; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-05

    ... COMMISSION 10 CFR Part 171 RIN 3150-AJ16 Technical Corrections; Correction AGENCY: Nuclear Regulatory... corrections, including updating the street address for the Region I office, correcting authority citations and... rule. DATES: The correction is effective on December 5, 2012. FOR FURTHER INFORMATION CONTACT:...

  5. 78 FR 75449 - Miscellaneous Corrections; Corrections

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ..., 50, 52, and 70 RIN 3150-AJ23 Miscellaneous Corrections; Corrections AGENCY: Nuclear Regulatory... final rule in the Federal Register on June 7, 2013, to make miscellaneous corrections to its regulations... miscellaneous corrections to its regulations in chapter I of Title 10 of the Code of Federal Regulations (10...

  6. 77 FR 2435 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ...- Free Treatment Under the Generalized System of Preferences and for Other Purposes Correction In... following correction: On page 407, the date following the proclamation number should read ``December...

  7. 78 FR 2193 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-10

    ... United States-Panama Trade Promotion Agreement and for Other Purposes Correction In Presidential document... correction: On page 66507, the proclamation identification heading on line one should read...

  8. Correction of spatial distortion in MR imaging: a prerequisite for accurate stereotaxy.

    PubMed

    Schad, L; Lott, S; Schmitt, F; Sturm, V; Lorenz, W J

    1987-01-01

    With magnetic resonance (MR) imaging, accurate spatial information--critical for effective stereotaxy--demands a homogeneous static field and linear gradients. Inhomogeneities and nonlinearities induced by eddy currents during the pulse sequences distort the images and produce spurious displacements of the stereotactic coordinates in both the x-y plane and the z axis. These errors in position can be assessed by means of two phantoms placed within the stereotactic guidance system--a "two-dimensional phantom" displaying "pincushion" distortion in the image (i.e., x, y) plane, and the "three-dimensional phantom" displaying displacement, warp, and tilt of the image plane itself. The pincushion distortion can be "corrected" (reducing displacements from 5 to 1-2 mm) by calculations based on modeling the distortion as a fourth order two-dimensional polynomial. Based on these corrected images, errors in the z coordinate and tilt of image planes may be corrected by adjustment of the gradient shimming currents. Such correction not only implements stereotaxy under MR guidance but also provides for the accurate transfer of anatomic/pathologic information between MR and CT images.

  9. TPX correction coil studies

    SciTech Connect

    Hanson, J.D.

    1994-11-03

    Error correction coils are planned for the TPX (Tokamak Plasma Experiment) in order to avoid error field induced locked modes and disruption. The FT (Fix Tokamak) code is used to evaluate the ability of these correction coils to remove islands caused by symmetry breaking magnetic field errors. The proposed correction coils are capable of correcting a variety of error fields.

  10. 75 FR 18747 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-13

    ... Day: A National Day of Celebration of Greek and American Democracy, 2010 Correction In Presidential... correction: On page 15601, the first line of the heading should read ``Proclamation 8485 of March 24,...

  11. 77 FR 45469 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-01

    ... Respect to the Former Liberian Regime of Charles Taylor Correction In Presidential document 2012-17703 beginning on page 42415 in the issue of Wednesday, July 18, 2012, make the following correction: On...

  12. 78 FR 7255 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-01

    ... Unobligated Funds Under the American Recovery and Reinvestment Act of 2009 Correction In Presidential document... correction: On page 70883, the document identification heading on line one should read ``Notice of...

  13. 75 FR 68413 - Correction

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    2010-11-08

    ... Correction In Presidential document 2010-27676 beginning on page 67019 in the issue of Monday, November 1, 2010, make the following correction: On page 67019, the Presidential Determination number should...

  14. 75 FR 1013 - Correction

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    2010-01-08

    ... Correction In Presidential document E9-31418 beginning on page 707 in the issue of Tuesday, January 5, 2010, make the following correction: On page 731, the date line below the President's signature should...

  15. 75 FR 68409 - Correction

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    2010-11-08

    ... Migration Needs Resulting From Flooding In Pakistan Correction In Presidential document 2010-27673 beginning on page 67015 in the issue of Monday, November 1, 2010, make the following correction: On page...

  16. 78 FR 73377 - Correction

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    2013-12-06

    ...--Continuation of U.S. Drug Interdiction Assistance to the Government of Colombia Correction In Presidential... correction: On page 51647, the heading of the document was omitted and should read ``Continuation of...

  17. 77 FR 60037 - Correction

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    2012-10-02

    ... Commit, Threaten To Commit, or Support Terrorism Correction In Presidential document 2012-22710 beginning on page 56519 in the issue of Wednesday, September 12, 2012, make the following correction: On...

  18. 75 FR 68407 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-08

    ... Migration Needs Resulting from Violence in Kyrgyzstan Correction In Presidential document 2010-27672 beginning on page 67013 in the issue of Monday, November 1, 2010, make the following correction: On...

  19. Research in Correctional Rehabilitation.

    ERIC Educational Resources Information Center

    Rehabilitation Services Administration (DHEW), Washington, DC.

    Forty-three leaders in corrections and rehabilitation participated in the seminar planned to provide an indication of the status of research in correctional rehabilitation. Papers include: (1) "Program Trends in Correctional Rehabilitation" by John P. Conrad, (2) "Federal Offenders Rahabilitation Program" by Percy B. Bell and Merlyn Mathews, (3)…

  20. Teaching Politically Correct Language

    ERIC Educational Resources Information Center

    Tsehelska, Maryna

    2006-01-01

    This article argues that teaching politically correct language to English learners provides them with important information and opportunities to be exposed to cultural issues. The author offers a brief review of how political correctness became an issue and how being politically correct influences the use of language. The article then presents…

  1. Correcting bias in the rational polynomial coefficients of satellite imagery using thin-plate smoothing splines

    NASA Astrophysics Data System (ADS)

    Shen, Xiang; Liu, Bin; Li, Qing-Quan

    2017-03-01

    The Rational Function Model (RFM) has proven to be a viable alternative to the rigorous sensor models used for geo-processing of high-resolution satellite imagery. Because of various errors in the satellite ephemeris and instrument calibration, the Rational Polynomial Coefficients (RPCs) supplied by image vendors are often not sufficiently accurate, and there is therefore a clear need to correct the systematic biases in order to meet the requirements of high-precision topographic mapping. In this paper, we propose a new RPC bias-correction method using the thin-plate spline modeling technique. Benefiting from its excellent performance and high flexibility in data fitting, the thin-plate spline model has the potential to remove complex distortions in vendor-provided RPCs, such as the errors caused by short-period orbital perturbations. The performance of the new method was evaluated by using Ziyuan-3 satellite images and was compared against the recently developed least-squares collocation approach, as well as the classical affine-transformation and quadratic-polynomial based methods. The results show that the accuracies of the thin-plate spline and the least-squares collocation approaches were better than the other two methods, which indicates that strong non-rigid deformations exist in the test data because they cannot be adequately modeled by simple polynomial-based methods. The performance of the thin-plate spline method was close to that of the least-squares collocation approach when only a few Ground Control Points (GCPs) were used, and it improved more rapidly with an increase in the number of redundant observations. In the test scenario using 21 GCPs (some of them located at the four corners of the scene), the correction residuals of the thin-plate spline method were about 36%, 37%, and 19% smaller than those of the affine transformation method, the quadratic polynomial method, and the least-squares collocation algorithm, respectively, which demonstrates

  2. Corrective Primary Impression Technique

    PubMed Central

    Fernandes, Aquaviva; Dua, Neha; Herekar, Manisha

    2010-01-01

    The article describes a simple, quick and corrective technique for making the preliminary impression. It records the extensions better as compared to the impressions made using only impression compound. This technique is accurate and gives properly extended custom tray. Any deficiencies seen in the compound primary impression are corrected using this technique hence, this technique is called as a “corrective primary impression technique”. PMID:20502648

  3. Request for Correction 10003

    EPA Pesticide Factsheets

    Letter from Jeff Rush requesting rescinding and correction online and printed information regarding alleged greenhouse gas emissions reductions resulting from beneficial use of coal combustion waste products.

  4. 78 FR 55169 - Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-10

    ... Commodities and Services From Any Agency of the United States Government to the Syrian Opposition Coalition (SOC) and the Syrian Opposition's Supreme Military Council (SMC) Correction In Presidential...

  5. Laser correcting mirror

    DOEpatents

    Sawicki, Richard H.

    1994-01-01

    An improved laser correction mirror (10) for correcting aberrations in a laser beam wavefront having a rectangular mirror body (12) with a plurality of legs (14, 16, 18, 20, 22, 24, 26, 28) arranged into opposing pairs (34, 36, 38, 40) along the long sides (30, 32) of the mirror body (12). Vector force pairs (49, 50, 52, 54) are applied by adjustment mechanisms (42, 44, 46, 48) between members of the opposing pairs (34, 36, 38, 40) for bending a reflective surface 13 of the mirror body 12 into a shape defining a function which can be used to correct for comatic aberrations.

  6. New Polynomial-Based Molecular Descriptors with Low Degeneracy

    PubMed Central

    Dehmer, Matthias; Mueller, Laurin A. J.; Graber, Armin

    2010-01-01

    In this paper, we introduce a novel graph polynomial called the ‘information polynomial’ of a graph. This graph polynomial can be derived by using a probability distribution of the vertex set. By using the zeros of the obtained polynomial, we additionally define some novel spectral descriptors. Compared with those based on computing the ordinary characteristic polynomial of a graph, we perform a numerical study using real chemical databases. We obtain that the novel descriptors do have a high discrimination power. PMID:20689599

  7. Enhanced Access Polynomial Based Self-healing Key Distribution

    NASA Astrophysics Data System (ADS)

    Dutta, Ratna; Mukhopadhyay, Sourav; Dowling, Tom

    A fundamental concern of any secure group communication system is that of key management. Wireless environments create new key management problems and requirements to solve these problems. One such core requirement in these emerging networks is that of self-healing. In systems where users can be offline and miss updates self healing allows a user to recover lost keys and get back into the secure communication without putting extra burden on the group manager. Clearly self healing must be only available to authorized users and this creates more challenges in that we must ensure unauthorized or revoked users cannot, themselves or by means of collusion, avail of self healing. To this end we enhance the one-way key chain based self-healing key distribution of Dutta et al. by introducing a collusion resistance property between the revoked users and the newly joined users. Our scheme is based on the concept of access polynomials. These can be loosely thought of as white lists of authorized users as opposed to the more widely used revocation polynomials or black lists of revoked users. We also allow each user a pre-arranged life cycle distributed by the group manager. Our scheme provides better efficiency in terms of storage, and the communication and computation costs do not increase as the number of sessions grows as compared to most current schemes. We analyze our scheme in an appropriate security model and prove that the proposed scheme is computationally secure and not only achieving forward and backward secrecy, but also resisting collusion between the new joined users and the revoked users. Unlike most existing schemes the new scheme allows temporary revocation. Also unlike existing schemes, our construction does not collapse if the number of revoked users crosses a threshold value. This feature increases resilience against revocation based denial of service (DOS) attacks and thus improves availability of communication channel.

  8. Correcting Hubble Vision.

    ERIC Educational Resources Information Center

    Shaw, John M.; Sheahen, Thomas P.

    1994-01-01

    Describes the theory behind the workings of the Hubble Space Telescope, the spherical aberration in the primary mirror that caused a reduction in image quality, and the corrective device that compensated for the error. (JRH)

  9. Corrected Age for Preemies

    MedlinePlus

    ... Breastfeeding Crying & Colic Diapers & Clothing Feeding & Nutrition Preemie Sleep Teething & Tooth Care Toddler Preschool Gradeschool Teen Young Adult Healthy Children > Ages & Stages > Baby > Preemie > Corrected Age For Preemies Ages & Stages ...

  10. Correcting Hubble Vision.

    ERIC Educational Resources Information Center

    Shaw, John M.; Sheahen, Thomas P.

    1994-01-01

    Describes the theory behind the workings of the Hubble Space Telescope, the spherical aberration in the primary mirror that caused a reduction in image quality, and the corrective device that compensated for the error. (JRH)

  11. Quantum Error Correction

    NASA Astrophysics Data System (ADS)

    Lidar, Daniel A.; Brun, Todd A.

    2013-09-01

    Prologue; Preface; Part I. Background: 1. Introduction to decoherence and noise in open quantum systems Daniel Lidar and Todd Brun; 2. Introduction to quantum error correction Dave Bacon; 3. Introduction to decoherence-free subspaces and noiseless subsystems Daniel Lidar; 4. Introduction to quantum dynamical decoupling Lorenza Viola; 5. Introduction to quantum fault tolerance Panos Aliferis; Part II. Generalized Approaches to Quantum Error Correction: 6. Operator quantum error correction David Kribs and David Poulin; 7. Entanglement-assisted quantum error-correcting codes Todd Brun and Min-Hsiu Hsieh; 8. Continuous-time quantum error correction Ognyan Oreshkov; Part III. Advanced Quantum Codes: 9. Quantum convolutional codes Mark Wilde; 10. Non-additive quantum codes Markus Grassl and Martin Rötteler; 11. Iterative quantum coding systems David Poulin; 12. Algebraic quantum coding theory Andreas Klappenecker; 13. Optimization-based quantum error correction Andrew Fletcher; Part IV. Advanced Dynamical Decoupling: 14. High order dynamical decoupling Zhen-Yu Wang and Ren-Bao Liu; 15. Combinatorial approaches to dynamical decoupling Martin Rötteler and Pawel Wocjan; Part V. Alternative Quantum Computation Approaches: 16. Holonomic quantum computation Paolo Zanardi; 17. Fault tolerance for holonomic quantum computation Ognyan Oreshkov, Todd Brun and Daniel Lidar; 18. Fault tolerant measurement-based quantum computing Debbie Leung; Part VI. Topological Methods: 19. Topological codes Héctor Bombín; 20. Fault tolerant topological cluster state quantum computing Austin Fowler and Kovid Goyal; Part VII. Applications and Implementations: 21. Experimental quantum error correction Dave Bacon; 22. Experimental dynamical decoupling Lorenza Viola; 23. Architectures Jacob Taylor; 24. Error correction in quantum communication Mark Wilde; Part VIII. Critical Evaluation of Fault Tolerance: 25. Hamiltonian methods in QEC and fault tolerance Eduardo Novais, Eduardo Mucciolo and

  12. Adaptable DC offset correction

    NASA Technical Reports Server (NTRS)

    Golusky, John M. (Inventor); Muldoon, Kelly P. (Inventor)

    2009-01-01

    Methods and systems for adaptable DC offset correction are provided. An exemplary adaptable DC offset correction system evaluates an incoming baseband signal to determine an appropriate DC offset removal scheme; removes a DC offset from the incoming baseband signal based on the appropriate DC offset scheme in response to the evaluated incoming baseband signal; and outputs a reduced DC baseband signal in response to the DC offset removed from the incoming baseband signal.

  13. Geological Corrections in Gravimetry

    NASA Astrophysics Data System (ADS)

    Mikuška, J.; Marušiak, I.

    2015-12-01

    Applying corrections for the known geology to gravity data can be traced back into the first quarter of the 20th century. Later on, mostly in areas with sedimentary cover, at local and regional scales, the correction known as gravity stripping has been in use since the mid 1960s, provided that there was enough geological information. Stripping at regional to global scales became possible after releasing the CRUST 2.0 and later CRUST 1.0 models in the years 2000 and 2013, respectively. Especially the later model provides quite a new view on the relevant geometries and on the topographic and crustal densities as well as on the crust/mantle density contrast. Thus, the isostatic corrections, which have been often used in the past, can now be replaced by procedures working with an independent information interpreted primarily from seismic studies. We have developed software for performing geological corrections in space domain, based on a-priori geometry and density grids which can be of either rectangular or spherical/ellipsoidal types with cells of the shapes of rectangles, tesseroids or triangles. It enables us to calculate the required gravitational effects not only in the form of surface maps or profiles but, for instance, also along vertical lines, which can shed some additional light on the nature of the geological correction. The software can work at a variety of scales and considers the input information to an optional distance from the calculation point up to the antipodes. Our main objective is to treat geological correction as an alternative to accounting for the topography with varying densities since the bottoms of the topographic masses, namely the geoid or ellipsoid, generally do not represent geological boundaries. As well we would like to call attention to the possible distortions of the corrected gravity anomalies. This work was supported by the Slovak Research and Development Agency under the contract APVV-0827-12.

  14. Peteye detection and correction

    NASA Astrophysics Data System (ADS)

    Yen, Jonathan; Luo, Huitao; Tretter, Daniel

    2007-01-01

    Redeyes are caused by the camera flash light reflecting off the retina. Peteyes refer to similar artifacts in the eyes of other mammals caused by camera flash. In this paper we present a peteye removal algorithm for detecting and correcting peteye artifacts in digital images. Peteye removal for animals is significantly more difficult than redeye removal for humans, because peteyes can be any of a variety of colors, and human face detection cannot be used to localize the animal eyes. In many animals, including dogs and cats, the retina has a special reflective layer that can cause a variety of peteye colors, depending on the animal's breed, age, or fur color, etc. This makes the peteye correction more challenging. We have developed a semi-automatic algorithm for peteye removal that can detect peteyes based on the cursor position provided by the user and correct them by neutralizing the colors with glare reduction and glint retention.

  15. Phaeochromocytoma [corrected] crisis.

    PubMed

    Whitelaw, B C; Prague, J K; Mustafa, O G; Schulte, K-M; Hopkins, P A; Gilbert, J A; McGregor, A M; Aylwin, S J B

    2014-01-01

    Phaeochromocytoma [corrected] crisis is an endocrine emergency associated with significant mortality. There is little published guidance on the management of phaeochromocytoma [corrected] crisis. This clinical practice update summarizes the relevant published literature, including a detailed review of cases published in the past 5 years, and a proposed classification system. We review the recommended management of phaeochromocytoma [corrected] crisis including the use of alpha-blockade, which is strongly associated with survival of a crisis. Mechanical circulatory supportive therapy (including intra-aortic balloon pump or extra-corporeal membrane oxygenation) is strongly recommended for patients with sustained hypotension. Surgical intervention should be deferred until medical stabilization is achieved. © 2013 John Wiley & Sons Ltd.

  16. Correction coil cable

    DOEpatents

    Wang, S.T.

    1994-11-01

    A wire cable assembly adapted for the winding of electrical coils is taught. A primary intended use is for use in particle tube assemblies for the Superconducting Super Collider. The correction coil cables have wires collected in wire array with a center rib sandwiched therebetween to form a core assembly. The core assembly is surrounded by an assembly housing having an inner spiral wrap and a counter wound outer spiral wrap. An alternate embodiment of the invention is rolled into a keystoned shape to improve radial alignment of the correction coil cable on a particle tube in a particle tube assembly. 7 figs.

  17. Target mass corrections revisited

    SciTech Connect

    Steffens, F.M.; Melnitchouk, W.

    2006-05-15

    We propose a new implementation of target mass corrections to nucleon structure functions which, unlike existing treatments, has the correct kinematic threshold behavior at finite Q{sup 2} in the x{yields}1 limit. We illustrate the differences between the new approach and existing prescriptions by considering specific examples for the F{sub 2} and F{sub L} structure functions, and discuss the broader implications of our results, which call into question the notion of universal parton distribution at finite Q{sup 2}.

  18. Target Mass Corrections Revisited

    SciTech Connect

    W. Melnitchouk; F. Steffens

    2006-03-07

    We propose a new implementation of target mass corrections to nucleon structure functions which, unlike existing treatments, has the correct kinematic threshold behavior at finite Q{sup 2} in the x {yields} 1 limit. We illustrate the differences between the new approach and existing prescriptions by considering specific examples for the F{sub 2} and F{sub L} structure functions, and discuss the broader implications of our results, which call into question the notion of universal parton distribution at finite Q{sup 2}.

  19. Corrective midfoot osteotomies.

    PubMed

    Stapleton, John J; DiDomenico, Lawrence A; Zgonis, Thomas

    2008-10-01

    Corrective midfoot osteotomies involve complete separation of the forefoot and hindfoot through the level of the midfoot, followed by uni-, bi-, or triplanar realignment and arthrodesis. This technique can be performed through various approaches; however, in the high-risk patient, percutaneous and minimum incision techniques are necessary to limit the potential of developing soft tissue injury. These master level techniques require extensive surgical experience and detailed knowledge of lower extremity biomechanics. The authors discuss preoperative clinical and radiographic evaluation, specific operative techniques used, and postoperative management for the high-risk patient undergoing corrective midfoot osteotomy.

  20. Refraction corrections for surveying

    NASA Technical Reports Server (NTRS)

    Lear, W. M.

    1979-01-01

    Optical measurements of range and elevation angle are distorted by the earth's atmosphere. High precision refraction correction equations are presented which are ideally suited for surveying because their inputs are optically measured range and optically measured elevation angle. The outputs are true straight line range and true geometric elevation angle. The 'short distances' used in surveying allow the calculations of true range and true elevation angle to be quickly made using a programmable pocket calculator. Topics covered include the spherical form of Snell's Law; ray path equations; and integrating the equations. Short-, medium-, and long-range refraction corrections are presented in tables.

  1. Correction of ocular dystopia.

    PubMed

    Janecka, I P

    1996-04-01

    The purpose of this study was to examine results with elective surgical correction of enophthalmos. The study was a retrospective assessment in a university-based referral practice. A consecutive sample of 10 patients who developed ocular dystopia following orbital trauma was examined. The main outcome measures were a subjective evaluation by patients and objective measurements of patients' eye position. The intervention was three-dimensional orbital reconstruction with titanium plates. It is concluded that satisfactory correction of enophthalmos and ocular dystopia can be achieved with elective surgery using titanium plates. In addition, intraoperative measurements of eye position in three planes increases the precision of surgery.

  2. Correction to ATel 10782

    NASA Astrophysics Data System (ADS)

    Zhang, Jujia

    2017-09-01

    I report a correction to the spectroscopic classification of the optical transients announced in ATEL #10782. In the main text of the telegram, the date of observation should be UT 2017 Sep. 25.6, which was written as UT 2017 Sep. 26.6 in the original report. I apologize for any confusion caused by this typo error.

  3. Errors and Their Corrections

    ERIC Educational Resources Information Center

    Joosten, Albert Max

    2016-01-01

    "Our primary concern is not that the child learns to do something without mistakes. Our real concern is that the child does what he needs, with interest." The reaction of so many adults to the mistakes of children is to correct, immediately and directly, says Joosten. To truly aid the child in development, we must learn to control our…

  4. New Directions in Corrections.

    ERIC Educational Resources Information Center

    McKee, John M.

    A picture of the American prison situation in the past and in its present changing form is presented. The object of the correctional community is becoming more and more that of successfully reintegrating the ex-offender into the social community from which he has been separated. It is predicted that within the next five years: (1) Every state will…

  5. Correction to ATel 10681

    NASA Astrophysics Data System (ADS)

    Wang, Xiaofeng

    2017-08-01

    We report a correction to the spectroscopic classification of two optical transients announced in ATel #10681. In the main text of the telegram, SN 2017giq and MASTER OT J033744.97+723159.0 should be classified as type Ic and type IIb supernovae, respectively, which were reversed in the original report. We apologize for any confusion caused by this typo error.

  6. Rethinking Correctional Staff Development.

    ERIC Educational Resources Information Center

    Williams, David C.

    There have been enduring conflicts in correctional institutions between personnel charged with rehabilitative duties and those who oversee authority. It is only within the past few years that realistic communication between these groups has been tolerated. The same period of time has been characterized by the infusion of training and staff…

  7. Refraction corrections for surveying

    NASA Technical Reports Server (NTRS)

    Lear, W. M.

    1980-01-01

    Optical measurements of range and elevation angles are distorted by refraction of Earth's atmosphere. Theoretical discussion of effect, along with equations for determining exact range and elevation corrections, is presented in report. Potentially useful in optical site surveying and related applications, analysis is easily programmed on pocket calculator. Input to equation is measured range and measured elevation; output is true range and true elevation.

  8. Spelling Words Correctly.

    ERIC Educational Resources Information Center

    Ediger, Marlow

    Traditional methods of teaching spelling emphasized that pupils might write each new spelling word correctly and repeatedly from a weekly list in the spelling textbook. Some weaknesses in this approach are that rote learning is being stressed without emphasizing application of what has been learned, and that there is nothing which relates the…

  9. Thermodynamically Correct Bioavailability Estimations

    DTIC Science & Technology

    1992-04-30

    6448 I 1. SWPPUMENTA* NOTIS lIa. OISTUAMJTiOAVAILAIILTY STATIMENT 121 OT REbT ostwosCo z I Approved for public release; distribution unlimited... research is to develop thermodynamically correct bioavailability estimations using chromatographic stationary phases as a model of the "interphase

  10. Refraction corrections for surveying

    NASA Technical Reports Server (NTRS)

    Lear, W. M.

    1980-01-01

    Optical measurements of range and elevation angles are distorted by refraction of Earth's atmosphere. Theoretical discussion of effect, along with equations for determining exact range and elevation corrections, is presented in report. Potentially useful in optical site surveying and related applications, analysis is easily programmed on pocket calculator. Input to equation is measured range and measured elevation; output is true range and true elevation.

  11. Holographic Phase Correction.

    DTIC Science & Technology

    1987-06-01

    aberrated wavefront. With this in mind , the following example was considered. 3.2 REPLAY EFFICIENCY - AN EXAMPLE This example represents the phase...practical points to bear in mind when considering the phase correction - in particular, the flatness of the hologram input and output surfaces, and the...DOCUMENT CONTROL SHEET Overall securty clasification of sheet UNCLASSIFIED

  12. Issues in Correctional Training and Casework. Correctional Monograph.

    ERIC Educational Resources Information Center

    Wolford, Bruce I., Ed.; Lawrenz, Pam, Ed.

    The eight papers contained in this monograph were drawn from two national meetings on correctional training and casework. Titles and authors are: "The Challenge of Professionalism in Correctional Training" (Michael J. Gilbert); "A New Perspective in Correctional Training" (Jack Lewis); "Reasonable Expectations in Correctional Officer Training:…

  13. Correction coil cable

    DOEpatents

    Wang, Sou-Tien

    1994-11-01

    A wire cable assembly (10, 310) adapted for the winding of electrical coils is taught. A primary intended use is for use in particle tube assemblies (532) for the superconducting super collider. The correction coil cables (10, 310) have wires (14, 314) collected in wire arrays (12, 312) with a center rib (16, 316) sandwiched therebetween to form a core assembly (18, 318 ). The core assembly (18, 318) is surrounded by an assembly housing (20, 320) having an inner spiral wrap (22, 322) and a counter wound outer spiral wrap (24, 324). An alternate embodiment (410) of the invention is rolled into a keystoned shape to improve radial alignment of the correction coil cable (410) on a particle tube (733) in a particle tube assembly (732).

  14. CTI Correction Code

    NASA Astrophysics Data System (ADS)

    Massey, Richard; Stoughton, Chris; Leauthaud, Alexie; Rhodes, Jason; Koekemoer, Anton; Ellis, Richard; Shaghoulian, Edgar

    2013-07-01

    Charge Transfer Inefficiency (CTI) due to radiation damage above the Earth's atmosphere creates spurious trailing in images from Charge-Coupled Device (CCD) imaging detectors. Radiation damage also creates unrelated warm pixels, which can be used to measure CTI. This code provides pixel-based correction for CTI and has proven effective in Hubble Space Telescope Advanced Camera for Surveys raw images, successfully reducing the CTI trails by a factor of ~30 everywhere in the CCD and at all flux levels. The core is written in java for speed, and a front-end user interface is provided in IDL. The code operates on raw data by returning individual electrons to pixels from which they were unintentionally dragged during readout. Correction takes about 25 minutes per ACS exposure, but is trivially parallelisable to multiple processors.

  15. Voltage correction power flow

    SciTech Connect

    Rajicic, D.; Ackovski, R.; Taleski, R. . Dept. of Electrical Engineering)

    1994-04-01

    A method for power flow solution of weakly meshed distribution and transmission networks is presented. It is based on oriented ordering of network elements. That allows an efficient construction of the loop impedance matrix and rational organization of the processes such as: power summation (backward sweep), current summation (backward sweep) and node voltage calculation (forward sweep). The first step of the algorithm is calculation of node voltages on the radial part of the network. The second step is calculation of the breakpoint currents. Then, the procedure continues with the first step, which is preceded by voltage correction. It is illustrated that using voltage correction approach, the iterative process of weakly meshed network voltage calculation is faster and more reliable.

  16. Error-correction coding

    NASA Technical Reports Server (NTRS)

    Hinds, Erold W. (Principal Investigator)

    1996-01-01

    This report describes the progress made towards the completion of a specific task on error-correcting coding. The proposed research consisted of investigating the use of modulation block codes as the inner code of a concatenated coding system in order to improve the overall space link communications performance. The study proposed to identify and analyze candidate codes that will complement the performance of the overall coding system which uses the interleaved RS (255,223) code as the outer code.

  17. Correcting Duporcq's theorem☆

    PubMed Central

    Nawratil, Georg

    2014-01-01

    In 1898, Ernest Duporcq stated a famous theorem about rigid-body motions with spherical trajectories, without giving a rigorous proof. Today, this theorem is again of interest, as it is strongly connected with the topic of self-motions of planar Stewart–Gough platforms. We discuss Duporcq's theorem from this point of view and demonstrate that it is not correct. Moreover, we also present a revised version of this theorem. PMID:25540467

  18. Experimental repetitive quantum error correction.

    PubMed

    Schindler, Philipp; Barreiro, Julio T; Monz, Thomas; Nebendahl, Volckmar; Nigg, Daniel; Chwalla, Michael; Hennrich, Markus; Blatt, Rainer

    2011-05-27

    The computational potential of a quantum processor can only be unleashed if errors during a quantum computation can be controlled and corrected for. Quantum error correction works if imperfections of quantum gate operations and measurements are below a certain threshold and corrections can be applied repeatedly. We implement multiple quantum error correction cycles for phase-flip errors on qubits encoded with trapped ions. Errors are corrected by a quantum-feedback algorithm using high-fidelity gate operations and a reset technique for the auxiliary qubits. Up to three consecutive correction cycles are realized, and the behavior of the algorithm for different noise environments is analyzed.

  19. Biasing errors and corrections

    NASA Technical Reports Server (NTRS)

    Meyers, James F.

    1991-01-01

    The dependence of laser velocimeter measurement rate on flow velocity is discussed. Investigations outlining that any dependence is purely statistical, and is nonstationary both spatially and temporally, are described. Main conclusions drawn are that the times between successive particle arrivals should be routinely measured and the calculation of the velocity data rate correlation coefficient should be performed to determine if a dependency exists. If none is found, accept the data ensemble as an independent sample of the flow. If a dependency is found, the data should be modified to obtain an independent sample. Universal correcting procedures should never be applied because their underlying assumptions are not valid.

  20. [Correctional health care].

    PubMed

    Fix, Michel

    2013-01-01

    Court decisions taking away someone's freedom by requiring them to serve a jail sentence should not deny them access to the same health care available to free citizens in full compliance with patient confidentiality. Health institutions, responsible for administering somatic care, offer a comprehensive response to the medical needs of those under justice control, both in jails and conventional care units. For a physician, working in the correctional setting implies accepting its constraints, and violence, and protecting and enforcing fundamental rights, as well as rights to dignity, confidential care and freedom to accept or refuse a treatment.

  1. [Correction of paralytic lagophthalmos].

    PubMed

    Iskusnykh, N S; Grusha, Y O

    2015-01-01

    Current options for correction of paralytic lagophthalmos are either temporary (external eyelid weight placement, hyaluronic acid gel or botulinum toxin A injection) or permanent (various procedures for narrowing of the palpebral fissure, upper eyelid weights or spring implantation). Neuroplastic surgery (cross-facial nerve grafting, nerve anastomoses) and muscle transposition surgery is not effective enough. The majority of elderly and medically compromised patients should not be considered for such complicated and long procedures. Upper eyelid weight implantation thus appears the most reliable and simple treatment.

  2. Using Online Annotations to Support Error Correction and Corrective Feedback

    ERIC Educational Resources Information Center

    Yeh, Shiou-Wen; Lo, Jia-Jiunn

    2009-01-01

    Giving feedback on second language (L2) writing is a challenging task. This research proposed an interactive environment for error correction and corrective feedback. First, we developed an online corrective feedback and error analysis system called "Online Annotator for EFL Writing". The system consisted of five facilities: Document Maker,…

  3. Mental Health in Corrections: An Overview for Correctional Staff.

    ERIC Educational Resources Information Center

    Sowers, Wesley; Thompson, Kenneth; Mullins, Stephen

    This volume is designed to provide corrections practitioners with basic staff training on the needs of those with mental illness and impairments in our correctional systems. Chapter titles are: (1) "Mental Illness in the Correctional Setting"; (2) "Substance Use Disorders"; (3) "Problems with Mood"; (4) "Problems…

  4. Using Online Annotations to Support Error Correction and Corrective Feedback

    ERIC Educational Resources Information Center

    Yeh, Shiou-Wen; Lo, Jia-Jiunn

    2009-01-01

    Giving feedback on second language (L2) writing is a challenging task. This research proposed an interactive environment for error correction and corrective feedback. First, we developed an online corrective feedback and error analysis system called "Online Annotator for EFL Writing". The system consisted of five facilities: Document Maker,…

  5. Mental Health in Corrections: An Overview for Correctional Staff.

    ERIC Educational Resources Information Center

    Sowers, Wesley; Thompson, Kenneth; Mullins, Stephen

    This volume is designed to provide corrections practitioners with basic staff training on the needs of those with mental illness and impairments in our correctional systems. Chapter titles are: (1) "Mental Illness in the Correctional Setting"; (2) "Substance Use Disorders"; (3) "Problems with Mood"; (4) "Problems…

  6. Smooth eigenvalue correction

    NASA Astrophysics Data System (ADS)

    Hendrikse, Anne; Veldhuis, Raymond; Spreeuwers, Luuk

    2013-12-01

    Second-order statistics play an important role in data modeling. Nowadays, there is a tendency toward measuring more signals with higher resolution (e.g., high-resolution video), causing a rapid increase of dimensionality of the measured samples, while the number of samples remains more or less the same. As a result the eigenvalue estimates are significantly biased as described by the Marčenko Pastur equation for the limit of both the number of samples and their dimensionality going to infinity. By introducing a smoothness factor, we show that the Marčenko Pastur equation can be used in practical situations where both the number of samples and their dimensionality remain finite. Based on this result we derive methods, one already known and one new to our knowledge, to estimate the sample eigenvalues when the population eigenvalues are known. However, usually the sample eigenvalues are known and the population eigenvalues are required. We therefore applied one of the these methods in a feedback loop, resulting in an eigenvalue bias correction method. We compare this eigenvalue correction method with the state-of-the-art methods and show that our method outperforms other methods particularly in real-life situations often encountered in biometrics: underdetermined configurations, high-dimensional configurations, and configurations where the eigenvalues are exponentially distributed.

  7. Worldwide radiosonde temperature corrections

    SciTech Connect

    Luers, J.; Eskridge, R.

    1997-11-01

    Detailed heat transfer analyses have been performed on ten of the world`s most commonly used radiosondes from 1960 to present. These radiosondes are the USA VIZ and Space Data, the Vaisala RS-80, RS-185/21, and RS12/15, the Japanese RS2-80, Russian MARS, RKZ, and A22, and the Chinese GZZ. The temperature error of each radiosonde has been calculated as a function of altitude and the sonde and environmental parameters that influence its magnitude. Computer models have been developed that allow the correction of temperature data from each sonde as a function of these parameters. Recommendations are made concerning the use of data from each of the radiosondes for climate studies. For some radiosondes, nighttime data requires no corrections. Other radiosondes require that day and daytime data is not feasible because parameters of significance, such as balloon rise rate, are not retrievable. The results from this study provide essential information for anyone attempting to perform climate studies using radiosonde data. 6 refs., 1 tab.

  8. Turbulence compressibility corrections

    NASA Technical Reports Server (NTRS)

    Coakley, T. J.; Horstman, C. C.; Marvin, J. G.; Viegas, J. R.; Bardina, J. E.; Huang, P. G.; Kussoy, M. I.

    1994-01-01

    The basic objective of this research was to identify, develop and recommend turbulence models which could be incorporated into CFD codes used in the design of the National AeroSpace Plane vehicles. To accomplish this goal, a combined effort consisting of experimental and theoretical phases was undertaken. The experimental phase consisted of a literature survey to collect and assess a database of well documented experimental flows, with emphasis on high speed or hypersonic flows, which could be used to validate turbulence models. Since it was anticipated that this database would be incomplete and would need supplementing, additional experiments in the NASA Ames 3.5-Foot Hypersonic Wind Tunnel (HWT) were also undertaken. The theoretical phase consisted of identifying promising turbulence models through applications to simple flows, and then investigating more promising models in applications to complex flows. The complex flows were selected from the database developed in the first phase of the study. For these flows it was anticipated that model performance would not be entirely satisfactory, so that model improvements or corrections would be required. The primary goals of the investigation were essentially achieved. A large database of flows was collected and assessed, a number of additional hypersonic experiments were conducted in the Ames HWT, and two turbulence models (kappa-epsilon and kappa-omega models with corrections) were determined which gave superior performance for most of the flows studied and are now recommended for NASP applications.

  9. Complications of auricular correction

    PubMed Central

    Staindl, Otto; Siedek, Vanessa

    2008-01-01

    The risk of complications of auricular correction is underestimated. There is around a 5% risk of early complications (haematoma, infection, fistulae caused by stitches and granulomae, allergic reactions, pressure ulcers, feelings of pain and asymmetry in side comparison) and a 20% risk of late complications (recurrences, telehone ear, excessive edge formation, auricle fitting too closely, narrowing of the auditory canal, keloids and complete collapse of the ear). Deformities are evaluated less critically by patients than by the surgeons, providing they do not concern how the ear is positioned. The causes of complications and deformities are, in the vast majority of cases, incorrect diagnosis and wrong choice of operating procedure. The choice of operating procedure must be adapted to suit the individual ear morphology. Bandaging technique and inspections and, if necessary, early revision are of great importance for the occurence and progress of early complications, in addition to operation techniques. In cases of late complications such as keloids and auricles that are too closely fitting, unfixed full-thickness skin flaps have proved to be the most successful. Large deformities can often only be corrected to a limited degree of satisfaction. PMID:22073079

  10. Contact Lenses for Vision Correction

    MedlinePlus

    ... Ophthalmologist Patient Stories Español Eye Health / Glasses & Contacts Contact Lenses Sections Contact Lenses for Vision Correction Contact ... to Know About Contact Lenses Colored Contact Lenses Contact Lenses for Vision Correction Leer en Español: Lentes ...

  11. Yearbook of Correctional Education 1989.

    ERIC Educational Resources Information Center

    Duguid, Stephen, Ed.

    This yearbook contains conference papers, commissioned papers, reprints of earlier works, and research-in-progress. They offer a retrospective view as well as address the mission and perspective of correctional education, its international dimension, correctional education in action, and current research. Papers include "Correctional Education and…

  12. 75 FR 16516 - Dates Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-01

    ... From the Federal Register Online via the Government Publishing Office ] NATIONAL ARCHIVES AND RECORDS ADMINISTRATION Office of the Federal Register Dates Correction Correction In the Notices section beginning on page 15401 in the issue of March 29th, 2010, make the following correction: On pages...

  13. Political Correctness and Cultural Studies.

    ERIC Educational Resources Information Center

    Carey, James W.

    1992-01-01

    Discusses political correctness and cultural studies, dealing with cultural studies and the left, the conservative assault on cultural studies, and political correctness in the university. Describes some of the underlying changes in the university, largely unaddressed in the political correctness debate, that provide the deep structure to the…

  14. Radiation camera motion correction system

    DOEpatents

    Hoffer, P.B.

    1973-12-18

    The device determines the ratio of the intensity of radiation received by a radiation camera from two separate portions of the object. A correction signal is developed to maintain this ratio at a substantially constant value and this correction signal is combined with the camera signal to correct for object motion. (Official Gazette)

  15. Spectroscopic imaging with prospective motion correction and retrospective phase correction.

    PubMed

    Lange, Thomas; Maclaren, Julian; Buechert, Martin; Zaitsev, Maxim

    2012-06-01

    Motion-induced artifacts are much harder to recognize in magnetic resonance spectroscopic imaging than in imaging experiments and can therefore lead to erroneous interpretation. A method for prospective motion correction based on an optical tracking system has recently been proposed and has already been successfully applied to single voxel spectroscopy. In this work, the utility of prospective motion correction in combination with retrospective phase correction is evaluated for spectroscopic imaging in the human brain. Retrospective phase correction, based on the interleaved reference scan method, is used to correct for motion-induced frequency shifts and ensure correct phasing of the spectra across the whole spectroscopic imaging slice. It is demonstrated that the presented correction methodology can reduce motion-induced degradation of spectroscopic imaging data. Copyright © 2011 Wiley-Liss, Inc.

  16. EDITORIAL: Politically correct physics?

    NASA Astrophysics Data System (ADS)

    Pople Deputy Editor, Stephen

    1997-03-01

    If you were a caring, thinking, liberally minded person in the 1960s, you marched against the bomb, against the Vietnam war, and for civil rights. By the 1980s, your voice was raised about the destruction of the rainforests and the threat to our whole planetary environment. At the same time, you opposed discrimination against any group because of race, sex or sexual orientation. You reasoned that people who spoke or acted in a discriminatory manner should be discriminated against. In other words, you became politically correct. Despite its oft-quoted excesses, the political correctness movement sprang from well-founded concerns about injustices in our society. So, on balance, I am all for it. Or, at least, I was until it started to invade science. Biologists were the first to feel the impact. No longer could they refer to 'higher' and 'lower' orders, or 'primitive' forms of life. To the list of undesirable 'isms' - sexism, racism, ageism - had been added a new one: speciesism. Chemists remained immune to the PC invasion, but what else could you expect from a group of people so steeped in tradition that their principal unit, the mole, requires the use of the thoroughly unreconstructed gram? Now it is the turn of the physicists. This time, the offenders are not those who talk disparagingly about other people or animals, but those who refer to 'forms of energy' and 'heat'. Political correctness has evolved into physical correctness. I was always rather fond of the various forms of energy: potential, kinetic, chemical, electrical, sound and so on. My students might merge heat and internal energy into a single, fuzzy concept loosely associated with moving molecules. They might be a little confused at a whole new crop of energies - hydroelectric, solar, wind, geothermal and tidal - but they could tell me what devices turned chemical energy into electrical energy, even if they couldn't quite appreciate that turning tidal energy into geothermal energy wasn't part of the

  17. Updating and correction.

    PubMed

    1994-09-09

    The current editions of two books edited by William T. Golden, Science Advice to the President and Science and Technology Advice to the President, Congress, and Judiciary, published this year by AAAS Press, are now being distributed by Transaction Publishers, New Brunswick, NJ 08903, at the prices $22.95 and $27.95 (paper), respectively, and are no longer available from AAAS. A related work, Golden's 1991 compilation Worldwide Science and Technology Advice to the Highest Levels of Government, originally published by Pergamon Press, is also being distributed by Transaction Publishers, at $25.95. For more information about the books see Science 1 July, p. 127. In the review of K. S. Thorne's Black Holes and Time Warps (13 May, p. 999-1000), the captions and illustrations on p. 1000 were mismatched. The correct order of the captions is (i) "A heavy rock..."; (ii) "Cosmic radio waves..."; and (iii) "The trajectories in space...."

  18. Endoscopic orientation correction.

    PubMed

    Höller, Kurt; Penne, Jochen; Schneider, Armin; Jahn, Jasper; Guttiérrez Boronat, Javier; Wittenberg, Thomas; Feussner, Hubertus; Hornegger, Joachim

    2009-01-01

    An open problem in endoscopic surgery (especially with flexible endoscopes) is the absence of a stable horizon in endoscopic images. With our "Endorientation" approach image rotation correction, even in non-rigid endoscopic surgery (particularly NOTES), can be realized with a tiny MEMS tri-axial inertial sensor placed on the tip of an endoscope. It measures the impact of gravity on each of the three orthogonal accelerometer axes. After an initial calibration and filtering of these three values the rotation angle is estimated directly. Achievable repetition rate is above the usual endoscopic video frame rate of 30 Hz; accuracy is about one degree. The image rotation is performed in real-time by digitally rotating the analog endoscopic video signal. Improvements and benefits have been evaluated in animal studies: Coordination of different instruments and estimation of tissue behavior regarding gravity related deformation and movement was rated to be much more intuitive with a stable horizon on endoscopic images.

  19. Temperature Corrected Bootstrap Algorithm

    NASA Technical Reports Server (NTRS)

    Comiso, Joey C.; Zwally, H. Jay

    1997-01-01

    A temperature corrected Bootstrap Algorithm has been developed using Nimbus-7 Scanning Multichannel Microwave Radiometer data in preparation to the upcoming AMSR instrument aboard ADEOS and EOS-PM. The procedure first calculates the effective surface emissivity using emissivities of ice and water at 6 GHz and a mixing formulation that utilizes ice concentrations derived using the current Bootstrap algorithm but using brightness temperatures from 6 GHz and 37 GHz channels. These effective emissivities are then used to calculate surface ice which in turn are used to convert the 18 GHz and 37 GHz brightness temperatures to emissivities. Ice concentrations are then derived using the same technique as with the Bootstrap algorithm but using emissivities instead of brightness temperatures. The results show significant improvement in the area where ice temperature is expected to vary considerably such as near the continental areas in the Antarctic, where the ice temperature is colder than average, and in marginal ice zones.

  20. Anomaly corrected heterotic horizons

    NASA Astrophysics Data System (ADS)

    Fontanella, A.; Gutowski, J. B.; Papadopoulos, G.

    2016-10-01

    We consider supersymmetric near-horizon geometries in heterotic supergravity up to two loop order in sigma model perturbation theory. We identify the conditions for the horizons to admit enhancement of supersymmetry. We show that solutions which undergo supersymmetry enhancement exhibit an {s}{l}(2,{R}) symmetry, and we describe the geometry of their horizon sections. We also prove a modified Lichnerowicz type theorem, incorporating α' corrections, which relates Killing spinors to zero modes of near-horizon Dirac operators. Furthermore, we demonstrate that there are no AdS2 solutions in heterotic supergravity up to second order in α' for which the fields are smooth and the internal space is smooth and compact without boundary. We investigate a class of nearly supersymmetric horizons, for which the gravitino Killing spinor equation is satisfied on the spatial cross sections but not the dilatino one, and present a description of their geometry.

  1. Temperature Corrected Bootstrap Algorithm

    NASA Technical Reports Server (NTRS)

    Comiso, Joey C.; Zwally, H. Jay

    1997-01-01

    A temperature corrected Bootstrap Algorithm has been developed using Nimbus-7 Scanning Multichannel Microwave Radiometer data in preparation to the upcoming AMSR instrument aboard ADEOS and EOS-PM. The procedure first calculates the effective surface emissivity using emissivities of ice and water at 6 GHz and a mixing formulation that utilizes ice concentrations derived using the current Bootstrap algorithm but using brightness temperatures from 6 GHz and 37 GHz channels. These effective emissivities are then used to calculate surface ice which in turn are used to convert the 18 GHz and 37 GHz brightness temperatures to emissivities. Ice concentrations are then derived using the same technique as with the Bootstrap algorithm but using emissivities instead of brightness temperatures. The results show significant improvement in the area where ice temperature is expected to vary considerably such as near the continental areas in the Antarctic, where the ice temperature is colder than average, and in marginal ice zones.

  2. Rethinking political correctness.

    PubMed

    Ely, Robin J; Meyerson, Debra E; Davidson, Martin N

    2006-09-01

    Legal and cultural changes over the past 40 years ushered unprecedented numbers of women and people of color into companies' professional ranks. Laws now protect these traditionally underrepresented groups from blatant forms of discrimination in hiring and promotion. Meanwhile, political correctness has reset the standards for civility and respect in people's day-to-day interactions. Despite this obvious progress, the authors' research has shown that political correctness is a double-edged sword. While it has helped many employees feel unlimited by their race, gender, or religion,the PC rule book can hinder people's ability to develop effective relationships across race, gender, and religious lines. Companies need to equip workers with skills--not rules--for building these relationships. The authors offer the following five principles for healthy resolution of the tensions that commonly arise over difference: Pause to short-circuit the emotion and reflect; connect with others, affirming the importance of relationships; question yourself to identify blind spots and discover what makes you defensive; get genuine support that helps you gain a broader perspective; and shift your mind-set from one that says, "You need to change," to one that asks, "What can I change?" When people treat their cultural differences--and related conflicts and tensions--as opportunities to gain a more accurate view of themselves, one another, and the situation, trust builds and relationships become stronger. Leaders should put aside the PC rule book and instead model and encourage risk taking in the service of building the organization's relational capacity. The benefits will reverberate through every dimension of the company's work.

  3. Deconvolution with Correct Sampling

    NASA Astrophysics Data System (ADS)

    Magain, P.; Courbin, F.; Sohy, S.

    1998-02-01

    A new method for improving the resolution of astronomical images is presented. It is based on the principle that sampled data cannot be fully deconvolved without violating the sampling theorem. Thus, the sampled image should be deconvolved not by the total point-spread function but by a narrower function chosen so that the resolution of the deconvolved image is compatible with the adopted sampling. Our deconvolution method gives results that are, in at least some cases, superior to those of other commonly used techniques: in particular, it does not produce ringing around point sources superposed on a smooth background. Moreover, it allows researchers to perform accurate astrometry and photometry of crowded fields. These improvements are a consequence of both the correct treatment of sampling and the recognition that the most probable astronomical image is not a flat one. The method is also well adapted to the optimal combination of different images of the same object, as can be obtained, e.g., from infrared observations or via adaptive optics techniques.

  4. Thermodynamics of Error Correction

    NASA Astrophysics Data System (ADS)

    Sartori, Pablo; Pigolotti, Simone

    2015-10-01

    Information processing at the molecular scale is limited by thermal fluctuations. This can cause undesired consequences in copying information since thermal noise can lead to errors that can compromise the functionality of the copy. For example, a high error rate during DNA duplication can lead to cell death. Given the importance of accurate copying at the molecular scale, it is fundamental to understand its thermodynamic features. In this paper, we derive a universal expression for the copy error as a function of entropy production and work dissipated by the system during wrong incorporations. Its derivation is based on the second law of thermodynamics; hence, its validity is independent of the details of the molecular machinery, be it any polymerase or artificial copying device. Using this expression, we find that information can be copied in three different regimes. In two of them, work is dissipated to either increase or decrease the error. In the third regime, the protocol extracts work while correcting errors, reminiscent of a Maxwell demon. As a case study, we apply our framework to study a copy protocol assisted by kinetic proofreading, and show that it can operate in any of these three regimes. We finally show that, for any effective proofreading scheme, error reduction is limited by the chemical driving of the proofreading reaction.

  5. Gravitational correction to vacuum polarization

    NASA Astrophysics Data System (ADS)

    Jentschura, U. D.

    2015-02-01

    We consider the gravitational correction to (electronic) vacuum polarization in the presence of a gravitational background field. The Dirac propagators for the virtual fermions are modified to include the leading gravitational correction (potential term) which corresponds to a coordinate-dependent fermion mass. The mass term is assumed to be uniform over a length scale commensurate with the virtual electron-positron pair. The on-mass shell renormalization condition ensures that the gravitational correction vanishes on the mass shell of the photon, i.e., the speed of light is unaffected by the quantum field theoretical loop correction, in full agreement with the equivalence principle. Nontrivial corrections are obtained for off-shell, virtual photons. We compare our findings to other works on generalized Lorentz transformations and combined quantum-electrodynamic gravitational corrections to the speed of light which have recently appeared in the literature.

  6. Processor register error correction management

    DOEpatents

    Bose, Pradip; Cher, Chen-Yong; Gupta, Meeta S.

    2016-12-27

    Processor register protection management is disclosed. In embodiments, a method of processor register protection management can include determining a sensitive logical register for executable code generated by a compiler, generating an error-correction table identifying the sensitive logical register, and storing the error-correction table in a memory accessible by a processor. The processor can be configured to generate a duplicate register of the sensitive logical register identified by the error-correction table.

  7. In Situ Mosaic Brightness Correction

    NASA Technical Reports Server (NTRS)

    Deen, Robert G.; Lorre, Jean J.

    2012-01-01

    In situ missions typically have pointable, mast-mounted cameras, which are capable of taking panoramic mosaics comprised of many individual frames. These frames are mosaicked together. While the mosaic software applies radiometric correction to the images, in many cases brightness/contrast seams still exist between frames. This is largely due to errors in the radiometric correction, and the absence of correction for photometric effects in the mosaic processing chain. The software analyzes the overlaps between adjacent frames in the mosaic and determines correction factors for each image in an attempt to reduce or eliminate these brightness seams.

  8. New orbit correction method uniting global and local orbit corrections

    NASA Astrophysics Data System (ADS)

    Nakamura, N.; Takaki, H.; Sakai, H.; Satoh, M.; Harada, K.; Kamiya, Y.

    2006-01-01

    A new orbit correction method, called the eigenvector method with constraints (EVC), is proposed and formulated to unite global and local orbit corrections for ring accelerators, especially synchrotron radiation(SR) sources. The EVC can exactly correct the beam positions at arbitrarily selected ring positions such as light source points, simultaneously reducing closed orbit distortion (COD) around the whole ring. Computer simulations clearly demonstrate these features of the EVC for both cases of the Super-SOR light source and the Advanced Light Source (ALS) that have typical structures of high-brilliance SR sources. In addition, the effects of errors in beam position monitor (BPM) reading and steering magnet setting on the orbit correction are analytically expressed and also compared with the computer simulations. Simulation results show that the EVC is very effective and useful for orbit correction and beam position stabilization in SR sources.

  9. Feature Referenced Error Correction Apparatus.

    DTIC Science & Technology

    A feature referenced error correction apparatus utilizing the multiple images of the interstage level image format to compensate for positional...images and by the generation of an error correction signal in response to the sub-frame registration errors. (Author)

  10. Diamagnetic Corrections and Pascal's Constants

    ERIC Educational Resources Information Center

    Bain, Gordon A.; Berry, John F.

    2008-01-01

    Measured magnetic susceptibilities of paramagnetic substances must typically be corrected for their underlying diamagnetism. This correction is often accomplished by using tabulated values for the diamagnetism of atoms, ions, or whole molecules. These tabulated values can be problematic since many sources contain incomplete and conflicting data.…

  11. Diamagnetic Corrections and Pascal's Constants

    ERIC Educational Resources Information Center

    Bain, Gordon A.; Berry, John F.

    2008-01-01

    Measured magnetic susceptibilities of paramagnetic substances must typically be corrected for their underlying diamagnetism. This correction is often accomplished by using tabulated values for the diamagnetism of atoms, ions, or whole molecules. These tabulated values can be problematic since many sources contain incomplete and conflicting data.…

  12. Corrections Education Evaluation System Model.

    ERIC Educational Resources Information Center

    Nelson, Orville; And Others

    The purpose of this project was to develop an evaluation system for the competency-based vocational program developed by Wisconsin's Division of Corrections, Department of Public Instruction (DPI), and the Vocational, Technical, and Adult Education System (VTAE). Site visits were conducted at five correctional institutions in March and April of…

  13. Unsupervised exposure correction for video

    NASA Astrophysics Data System (ADS)

    Petrova, X.; Sedunov, S.; Ignatov, A.

    2009-02-01

    The paper describes an "off-the-shelf" algorithmic solution for unsupervised exposure correction for video. An important feature of the algorithm is accurate processing not only for natural video sequences, but also for edited, rendered or combined content, including content with letter-boxes or pillar-boxes captured from TV broadcasts. The algorithm allows to change degree of exposure correction smoothly for continuous video scenes and to change it promptly on cuts. Solution includes scene change detection, letter-box detection, pillar-box detection, exposure correction adaptation, exposure correction and color correction. Exposure correction adaptation is based on histogram analysis and soft logics inference. Decision rules are based on relative number of entries in the low tones, mid tones and highlights, maximum entries in the low tones and mid tones, number of non-empty histogram entries and width of the middle range of the histogram. All decision rules have physical meaning, which allows to tune parameters easily for display devices of different classes. Exposure correction consists of computation of local average using edge-preserving filtering, applying local tone mapping and post-processing. At the final stage color correction aiming to reduce color distortions is applied.

  14. 75 FR 70951 - Notice, Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-19

    ... From the Federal Register Online via the Government Publishing Office NATIONAL COUNCIL ON DISABILITY (NCD) Sunshine Act Meetings Notice, Correction Type: Quarterly Meeting. Summary: NCD published a...., Suite 850, Washington, DC 20004; 202-272-2004 (voice), 202-272-2074 TTY; 202-272-2022 Fax. Correction...

  15. Error Correction, Revision, and Learning

    ERIC Educational Resources Information Center

    Truscott, John; Hsu, Angela Yi-ping

    2008-01-01

    Previous research has shown that corrective feedback on an assignment helps learners reduce their errors on that assignment during the revision process. Does this finding constitute evidence that learning resulted from the feedback? Differing answers play an important role in the ongoing debate over the effectiveness of error correction,…

  16. Correcting Slightly Less Simple Movements

    ERIC Educational Resources Information Center

    Aivar, M. P.; Brenner, E.; Smeets, J. B. J.

    2005-01-01

    Many studies have analysed how goal directed movements are corrected in response to changes in the properties of the target. However, only simple movements to single targets have been used in those studies, so little is known about movement corrections under more complex situations. Evidence from studies that ask for movements to several targets…

  17. Barometric and Earth Tide Correction

    SciTech Connect

    Toll, Nathaniel J.

    2005-11-10

    BETCO corrects for barometric and earth tide effects in long-term water level records. A regression deconvolution method is used ot solve a series of linear equations to determine an impulse response function for the well pressure head. Using the response function, a pressure head correction is calculated and applied.

  18. Error Correction: Report on a Study

    ERIC Educational Resources Information Center

    Dabaghi, Azizollah

    2006-01-01

    This article reports on a study which investigated the effects of correction of learners' grammatical errors on acquisition. Specifically, it compared the effects of timing of correction (immediate versus delayed correction) and manner of correction (explicit versus implicit correction). It also investigated the relative effects of correction of…

  19. A density dependent dispersion correction.

    PubMed

    Steinmann, Stephan N; Corminboeuf, Clémence

    2011-01-01

    Density functional approximations fail to provide an accurate treatment of weak interactions. More recent, but not readily available functionals can lead to significant improvements. A simple alternative to correct for the missing weak interactions is to add, a posteriori, an atom pair-wise dispersion correction. We here present a density dependent dispersion correction, dDXDM, which dramatically improves the performance of popular functionals (e.g., PBE-dDXDM or B3LYP-dDXDM) for a set of 145 systems featuring both inter- and intramolecular interactions. Whereas the highly parameterized M06-2X functional, the long-range corrected LC-BLYP and the fully non-local van der Waals density functional rPW86-W09 also lead to improved results as compared to standard DFT methods, the enhanced performance of dDXDM remains the most impressive.

  20. 2012 Technical Corrections Fact Sheet

    EPA Pesticide Factsheets

    Final Rule: 2012 Technical Corrections, Clarifying and Other Amendments to theGreenhouse Gas Reporting Rule, and Confidentiality Determinations for Certain DataElements of the Fluorinated Gas Source Category

  1. Correction of the crooked nose.

    PubMed

    Potter, Jason K

    2012-02-01

    Correction of the deviated nose is one of the most difficult tasks in rhinoplasty surgery and should be approached in a systematic manner to ensure a satisfied patient and surgeon. Correction of the deviated nose is unique in that the patient's complaints frequently include aesthetic and functional characteristics. Equal importance should be given to the preoperative, intraoperative, and postoperative aspects of the patient's treatment to ensure a favorable outcome.

  2. On Navigation Sensor Error Correction

    NASA Astrophysics Data System (ADS)

    Larin, V. B.

    2016-01-01

    The navigation problem for the simplest wheeled robotic vehicle is solved by just measuring kinematical parameters, doing without accelerometers and angular-rate sensors. It is supposed that the steerable-wheel angle sensor has a bias that must be corrected. The navigation parameters are corrected using the GPS. The approach proposed regards the wheeled robot as a system with nonholonomic constraints. The performance of such a navigation system is demonstrated by way of an example

  3. Quantum error correction for beginners.

    PubMed

    Devitt, Simon J; Munro, William J; Nemoto, Kae

    2013-07-01

    Quantum error correction (QEC) and fault-tolerant quantum computation represent one of the most vital theoretical aspects of quantum information processing. It was well known from the early developments of this exciting field that the fragility of coherent quantum systems would be a catastrophic obstacle to the development of large-scale quantum computers. The introduction of quantum error correction in 1995 showed that active techniques could be employed to mitigate this fatal problem. However, quantum error correction and fault-tolerant computation is now a much larger field and many new codes, techniques, and methodologies have been developed to implement error correction for large-scale quantum algorithms. In response, we have attempted to summarize the basic aspects of quantum error correction and fault-tolerance, not as a detailed guide, but rather as a basic introduction. The development in this area has been so pronounced that many in the field of quantum information, specifically researchers who are new to quantum information or people focused on the many other important issues in quantum computation, have found it difficult to keep up with the general formalisms and methodologies employed in this area. Rather than introducing these concepts from a rigorous mathematical and computer science framework, we instead examine error correction and fault-tolerance largely through detailed examples, which are more relevant to experimentalists today and in the near future.

  4. Robust distortion correction of endoscope

    NASA Astrophysics Data System (ADS)

    Li, Wenjing; Nie, Sixiang; Soto-Thompson, Marcelo; Chen, Chao-I.; A-Rahim, Yousif I.

    2008-03-01

    Endoscopic images suffer from a fundamental spatial distortion due to the wide angle design of the endoscope lens. This barrel-type distortion is an obstacle for subsequent Computer Aided Diagnosis (CAD) algorithms and should be corrected. Various methods and research models for the barrel-type distortion correction have been proposed and studied. For industrial applications, a stable, robust method with high accuracy is required to calibrate the different types of endoscopes in an easy of use way. The correction area shall be large enough to cover all the regions that the physicians need to see. In this paper, we present our endoscope distortion correction procedure which includes data acquisition, distortion center estimation, distortion coefficients calculation, and look-up table (LUT) generation. We investigate different polynomial models used for modeling the distortion and propose a new one which provides correction results with better visual quality. The method has been verified with four types of colonoscopes. The correction procedure is currently being applied on human subject data and the coefficients are being utilized in a subsequent 3D reconstruction project of colon.

  5. 75 FR 9100 - Proxy Disclosure Enhancements; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-01

    ... COMMISSION 17 CFR Part 249 RIN 3235-AK28 Proxy Disclosure Enhancements; Correction AGENCY: Securities and Exchange Commission. ACTION: Final rule; correction. SUMMARY: We are making technical corrections to..., we are making three corrections to Form 8-K. We are correcting Form 8-K to add an instruction,...

  6. Correction

    NASA Astrophysics Data System (ADS)

    2014-08-01

    In the About AGU article "AGU Union Fellows elected for 2014," published in the 29 July 2014 issue of Eos (95(30), 272, doi:10.1022/ 2014EO300008), a joint research group affiliation was inadvertently omitted for one Fellow. Antje Boetius is with the Alfred Wegener Institute, Bremerhaven, Germany, and the Max Planck Institute for Marine Microbiology, Bremen, Germany.

  7. Correction

    NASA Astrophysics Data System (ADS)

    1999-11-01

    Synsedimentary deformation in the Jurassic of southeastern Utah—A case of impact shaking? COMMENT Geology, v. 27, p. 661 (July 1999) The sentence on p. 661, first column, second paragraph, line one, should read: The 1600 m of Pennsylvania Paradox Formation is 75 90% salt in Arches National Park. The sentence on p. 661, second column, third paragraph, line seven, should read: This high-pressured ydrothermal solution created the clastic dikes, chert nodules from reprecipitated siliceous cement that have been called “siliceous impactites” (Kriens et al., 1997), and much of the present structure at Upheaval Dome by further faulting.

  8. Correction

    NASA Astrophysics Data System (ADS)

    2016-09-01

    The feature article “Neutrons for new drugs” (August pp26-29) stated that neutron crystallography was used to determine the structures of “wellknown complex biological molecules such as lysine, insulin and trypsin”.

  9. Correction.

    PubMed

    1992-12-11

    Last month, the U.S. Postal Service (USPS) prompted a 13 November Random Sample naming a group of scientists whose faces were appearing, USPS said, on stamps belonging to its Black Heritage Series. Among them: chemist Percy Lavon Julian; George Washington Carver; physician Charles R. Drew; astronomer and mathematician Benjamin Banneker; and inventor Jan Matzeliger. Science readers knew better. Two of the quintet appeared years ago: a stamp bearing Carver's picture was issued in 1948, and Drew appeared in the Great Americans Series in 1981.

  10. Correction.

    PubMed

    2015-03-01

    In the January 2015 issue of Cyberpsychology, Behavior, and Social Networking (vol. 18, no. 1, pp. 3–7), the article "Individual Differences in Cyber Security Behaviors: An Examination of Who Is Sharing Passwords." by Prof. Monica Whitty et al., has an error in wording in the abstract. The sentence in question was originally printed as: Contrary to our hypotheses, we found older people and individuals who score high on self-monitoring were more likely to share passwords. It should read: Contrary to our hypotheses, we found younger people and individuals who score high on self-monitoring were more likely to share passwords. The authors wish to apologize for the error.

  11. Corrections

    NASA Astrophysics Data System (ADS)

    2004-05-01

    1. The first photograph on p12 of News in Physics Educaton January 2004 is of Prof. Paul Black and not Prof. Jonathan Osborne, as stated. 2. The review of Flowlog on p209 of the March 2004 issue wrongly gives the maximum sampling rate of the analogue inputs as 25 kHz (40 ms) instead of 25 kHz (40 µs) and the digital inputs as 100 kHz (10 ms) instead of 100 kHz (10 µs). 3. The letter entitled 'A trial of two energies' by Eric McIldowie on pp212-4 of the March 2004 issue was edited to fit the space available. We regret that a few small errors were made in doing this. Rather than detail these, the interested reader can access the whole of the original letter as a Word file from the link below.

  12. Correction

    NASA Astrophysics Data System (ADS)

    2014-09-01

    An error was made in the spelling of the name of Noah Petro, who was quoted in the news article "The summer of supermoons," published in the 19 August 2014 issue of Eos (95(33), 297, doi:10.1002/2014EO330005). Eos regrets the error.

  13. Correction

    NASA Astrophysics Data System (ADS)

    2014-09-01

    An error was made in the spelling of the name of Mark Abbott, who was quoted in the news article "Earth observation plan looks toward balancing U.S. federal priorities," published in the 19 August 2014 issue of Eos (95(33), 295-296, doi:10.1002/2014EO330003). Eos regrets the error.

  14. Correction.

    PubMed

    1991-09-25

    In Temperature taking - getting it right' (Nursing Standard December 12 1990), the author erroneously referred to TcmpaDOT thermometers as using liquid crystal indicators. They in fact function through a colour change, using a mix of two organic chemicals.

  15. Correction

    NASA Astrophysics Data System (ADS)

    2013-03-01

    In the 5 March 2013 issue of Eos, the Forum, "Consider nominating a woman for an AGU award" (Eos, 94(10), 99, doi:10.1002/2013EO100003), incorrectly stated that of the three female AGU medalists in 2012, two became new Fellows at that time. This was based on incorrect information in AGU's records. In fact, one of the three female 2012 medalists became a new Fellow at that time; the other two had been elected Fellows earlier.

  16. Graviton corrections to Maxwell's equations

    NASA Astrophysics Data System (ADS)

    Leonard, Katie E.; Woodard, R. P.

    2012-05-01

    We use dimensional regularization to compute the one loop quantum gravitational contribution to the vacuum polarization on flat space background. Adding the appropriate Bogoliubov-Parsiuk-Hepp-Zimmermann counterterm gives a fully renormalized result which we employ to quantum correct Maxwell’s equations. These equations are solved to show that dynamical photons are unchanged, provided the free state wave functional is appropriately corrected. The response to the instantaneous appearance of a point dipole reveals a perturbative version of the long-conjectured, “smearing of the light cone”. There is no change in the far radiation field produced by an alternating dipole. However, the correction to the static electric field of a point charge shows strengthening at short distances, in contrast to expectations based on the renormalization group. We check for gauge dependence by working out the vacuum polarization in a general 3-parameter family of covariant gauges.

  17. Classical corrections in string cosmology

    NASA Astrophysics Data System (ADS)

    Brustein, Ram; Madden, Richard

    1999-07-01

    An important element in a model of non-singular string cosmology is a phase in which classical corrections saturate the growth of curvature in a deSitter-like phase with a linearly growing dilaton (an `algebraic fixed point'). As the form of the classical corrections is not well known, here we look for evidence, based on a suggested symmetry of the action, scale factor duality and on conformal field theory considerations, that they can produce this saturation. It has previously been observed that imposing scale factor duality on the O(alpha') corrections is not compatible with fixed point behavior. Here we present arguments that these problems persist to all orders in alpha'. We also present evidence for the form of a solution to the equations of motion using conformal perturbation theory, examine its implications for the form of the effective action and find novel fixed point structure.

  18. Universality of quantum gravity corrections.

    PubMed

    Das, Saurya; Vagenas, Elias C

    2008-11-28

    We show that the existence of a minimum measurable length and the related generalized uncertainty principle (GUP), predicted by theories of quantum gravity, influence all quantum Hamiltonians. Thus, they predict quantum gravity corrections to various quantum phenomena. We compute such corrections to the Lamb shift, the Landau levels, and the tunneling current in a scanning tunneling microscope. We show that these corrections can be interpreted in two ways: (a) either that they are exceedingly small, beyond the reach of current experiments, or (b) that they predict upper bounds on the quantum gravity parameter in the GUP, compatible with experiments at the electroweak scale. Thus, more accurate measurements in the future should either be able to test these predictions, or further tighten the above bounds and predict an intermediate length scale between the electroweak and the Planck scale.

  19. Error Field Correction in ITER

    SciTech Connect

    Park, Jong-kyu; Boozer, Allen H.; Menard, Jonathan E.; Schaffer, Michael J.

    2008-05-22

    A new method for correcting magnetic field errors in the ITER tokamak is developed using the Ideal Perturbed Equilibrium Code (IPEC). The dominant external magnetic field for driving islands is shown to be localized to the outboard midplane for three ITER equilibria that represent the projected range of operational scenarios. The coupling matrices between the poloidal harmonics of the external magnetic perturbations and the resonant fields on the rational surfaces that drive islands are combined for different equilibria and used to determine an ordered list of the dominant errors in the external magnetic field. It is found that efficient and robust error field correction is possible with a fixed setting of the correction currents relative to the currents in the main coils across the range of ITER operating scenarios that was considered.

  20. String-Corrected Black Holes

    SciTech Connect

    Hubeny, V.

    2005-01-12

    We investigate the geometry of four dimensional black hole solutions in the presence of stringy higher curvature corrections to the low energy effective action. For certain supersymmetric two charge black holes these corrections drastically alter the causal structure of the solution, converting seemingly pathological null singularities into timelike singularities hidden behind a finite area horizon. We establish, analytically and numerically, that the string-corrected two-charge black hole metric has the same Penrose diagram as the extremal four-charge black hole. The higher derivative terms lead to another dramatic effect--the gravitational force exerted by a black hole on an inertial observer is no longer purely attractive. The magnitude of this effect is related to the size of the compactification manifold.

  1. String-Corrected Black Holes

    SciTech Connect

    Hubeny, Veronika; Maloney, Alexander; Rangamani, Mukund

    2005-02-07

    We investigate the geometry of four dimensional black hole solutions in the presence of stringy higher curvature corrections to the low energy effective action. For certain supersymmetric two charge black holes these corrections drastically alter the causal structure of the solution, converting seemingly pathological null singularities into timelike singularities hidden behind a finite area horizon. We establish, analytically and numerically, that the string-corrected two-charge black hole metric has the same Penrose diagram as the extremal four-charge black hole. The higher derivative terms lead to another dramatic effect -- the gravitational force exerted by a black hole on an inertial observer is no longer purely attractive! The magnitude of this effect is related to the size of the compactification manifold.

  2. 77 FR 60039 - Availability of Records; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-02

    ... Part 1631 Availability of Records; Correction AGENCY: Federal Retirement Thrift Investment Board. ACTION: Direct final rule; correction. SUMMARY: The Federal Retirement Thrift Investment Board (Agency... corrections to FRTIB regulations stemming from the direct final rule published in the February 27,...

  3. When correction turns positive: processing corrective prosody in Dutch.

    PubMed

    Dimitrova, Diana V; Stowe, Laurie A; Hoeks, John C J

    2015-01-01

    Current research on spoken language does not provide a consistent picture as to whether prosody, the melody and rhythm of speech, conveys a specific meaning. Perception studies show that English listeners assign meaning to prosodic patterns, and, for instance, associate some accents with contrast, whereas Dutch listeners behave more controversially. In two ERP studies we tested how Dutch listeners process words carrying two types of accents, which either provided new information (new information accents) or corrected information (corrective accents), both in single sentences (experiment 1) and after corrective and new information questions (experiment 2). In both experiments corrective accents elicited a sustained positivity as compared to new information accents, which started earlier in context than in single sentences. The positivity was not modulated by the nature of the preceding question, suggesting that the underlying neural mechanism likely reflects the construction of an interpretation to the accented word, either by identifying an alternative in context or by inferring it when no context is present. Our experimental results provide strong evidence for inferential processes related to prosodic contours in Dutch.

  4. When Correction Turns Positive: Processing Corrective Prosody in Dutch

    PubMed Central

    Dimitrova, Diana V.; Stowe, Laurie A.; Hoeks, John C. J.

    2015-01-01

    Current research on spoken language does not provide a consistent picture as to whether prosody, the melody and rhythm of speech, conveys a specific meaning. Perception studies show that English listeners assign meaning to prosodic patterns, and, for instance, associate some accents with contrast, whereas Dutch listeners behave more controversially. In two ERP studies we tested how Dutch listeners process words carrying two types of accents, which either provided new information (new information accents) or corrected information (corrective accents), both in single sentences (experiment 1) and after corrective and new information questions (experiment 2). In both experiments corrective accents elicited a sustained positivity as compared to new information accents, which started earlier in context than in single sentences. The positivity was not modulated by the nature of the preceding question, suggesting that the underlying neural mechanism likely reflects the construction of an interpretation to the accented word, either by identifying an alternative in context or by inferring it when no context is present. Our experimental results provide strong evidence for inferential processes related to prosodic contours in Dutch. PMID:25973607

  5. Corrections in Montana: A Consultation on Corrections in Montana.

    ERIC Educational Resources Information Center

    Montana State Advisory Committee to the U.S. Commission on Civil Rights, Helena.

    The findings and recommendations of a two-day conference on the civil and human rights of inmates of Montana's correctional institutions are contained in this report. The views of private citizens and experts from local, state, and federal organizations are presented in edited form under seven subject headings: existing prison reform legislation,…

  6. Automated Confocal Microscope Bias Correction

    NASA Astrophysics Data System (ADS)

    Dorval, Thierry; Genovesio, Auguste

    2006-10-01

    Illumination artifacts systematically occur in 2D cross-section confocal microscopy imaging . These bias can strongly corrupt an higher level image processing such as a segmentation, a fluorescence evaluation or even a pattern extraction/recognition. This paper presents a new fully automated bias correction methodology based on large image database preprocessing. This method is very appropriate to the High Content Screening (HCS), method dedicated to drugs discovery. Our method assumes that the amount of pictures available is large enough to allow a reliable statistical computation of an average bias image. A relevant segmentation evaluation protocol and experimental results validate our correction algorithm by outperforming object extraction on non corrupted images.

  7. DARHT Radiographic Grid Scale Correction

    SciTech Connect

    Warthen, Barry J.

    2015-02-13

    Recently it became apparent that the radiographic grid which has been used to calibrate the dimensional scale of DARHT radiographs was not centered at the location where the objects have been centered. This offset produced an error of 0.188% in the dimensional scaling of the radiographic images processed using the assumption that the grid and objects had the same center. This paper will show the derivation of the scaling correction, explain how new radiographs are being processed to account for the difference in location, and provide the details of how to correct radiographic image processed with the erroneous scale factor.

  8. Quantum memories and error correction

    NASA Astrophysics Data System (ADS)

    Wootton, James R.

    2012-11-01

    Quantum states are inherently fragile, making their storage a major concern for many practical applications and experimental tests of quantum mechanics. The field of quantum memories is concerned with how this storage may be achieved, covering everything from the physical systems best suited to the task to the abstract methods that may be used to increase performance. This review concerns itself with the latter, giving an overview of error correction and self-correction, and how they may be used to achieve fault-tolerant quantum computation. The planar code is presented as a concrete example, both as a quantum memory and as a framework for quantum computation.

  9. Quantum error correction of observables

    SciTech Connect

    Beny, Cedric; Kempf, Achim; Kribs, David W.

    2007-10-15

    A formalism for quantum error correction based on operator algebras was introduced by us earlier [Phys. Rev. Lett. 98, 10052 (2007)] via consideration of the Heisenberg picture for quantum dynamics. The resulting theory allows for the correction of hybrid quantum-classical information and does not require an encoded state to be entirely in one of the corresponding subspaces or subsystems. Here, we provide detailed proofs for our earlier results, derive more results, and elucidate key points with expanded discussions. We also present several examples and indicate how the theory can be extended to operator spaces and general positive operator-valued measures.

  10. Self-correcting Multigrid Solver

    SciTech Connect

    Jerome L.V. Lewandowski

    2004-06-29

    A new multigrid algorithm based on the method of self-correction for the solution of elliptic problems is described. The method exploits information contained in the residual to dynamically modify the source term (right-hand side) of the elliptic problem. It is shown that the self-correcting solver is more efficient at damping the short wavelength modes of the algebraic error than its standard equivalent. When used in conjunction with a multigrid method, the resulting solver displays an improved convergence rate with no additional computational work.

  11. [Anatomy correction of penile epispadias].

    PubMed

    Li, Yang-Qun; Pan, Huan-Li; Tang, Yong; Chen, Wen; Zhao, Mu-Xin; Yang, Zhe; Liu, Xiao-Ji; Hu, Chun-Mei; Liu, Yuan-Yuan; Ma, Ning; Xie, Miao

    2011-11-01

    To investigate the pathological characters and anatomic correction of penile epispadias. The urethra was formed by local urethra plate mucosa flaps. The contracture on dorsum of penis was released by cutting off the superficial suspensory ligament to reposition the penile and urethral sponge. From Jun. 2004 to Dec. 2010, 26 cases with penile epispadias were treated. 18 cases were followed up for 6 months to 5 years. 10 cases were treated successfully with good cosmetic and functional results. Urinary incontinence happened in 8 cases, which healed after tightening operation. The anatomic correction of penile epispadias can recover the normal anatomic structure, resulting good cosmetic and functional results.

  12. Updating quasar bolometric luminosity corrections - III. [O iii] bolometric corrections

    NASA Astrophysics Data System (ADS)

    Pennell, Alison; Runnoe, Jessie C.; Brotherton, M. S.

    2017-06-01

    We present quasar bolometric corrections using the [O III] λ 5007 narrow emission line luminosity based on the detailed spectral energy distributions of 53 bright quasars at low to moderate redshift (0.0345 < z < 1.0002). We adopted two functional forms to calculate Liso, the bolometric luminosity determined under the assumption of isotropy: {L_{iso}}=A {L_{[O III]}} for comparison with the literature and {log(L_{iso})}=B+C log(L_{[O III]}), which better characterizes the data. We also explored whether 'Eigenvector 1 (EV1)', which describes the range of quasar spectral properties and quantifies their diversity, introduces scatter into the L_{[O III]}-Liso relationship. We found that the {[O III]} bolometric correction can be significantly improved by adding a term including the equivalent width ratio R_{Fe II} ≡ EW_{{Fe II}}/EW_{Hβ }, which is an EV1 indicator. Inclusion of R_{Fe II} in predicting Liso is significant at nearly the 3σ level and reduces the scatter and systematic offset of the luminosity residuals. Typically, {[O III]} bolometric corrections are adopted for Type 2 sources where the quasar continuum is not observed and in these cases, R_{Fe II} cannot be measured. We searched for an alternative measure of EV1 that could be measured in the optical spectra of Type 2 sources but were unable to identify one. Thus, the main contribution of this work is to present an improved {[O III]} bolometric correction based on measured bolometric luminosities and highlight the EV1 dependence of the correction in Type 1 sources.

  13. 77 FR 61229 - Availability of Records; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-09

    ... Part 1631 Availability of Records; Correction AGENCY: Federal Retirement Thrift Investment Board... INFORMATION: This document contains corrections to FRTIB regulations stemming from the direct final...

  14. "Free Speech" and "Political Correctness"

    ERIC Educational Resources Information Center

    Scott, Peter

    2016-01-01

    "Free speech" and "political correctness" are best seen not as opposing principles, but as part of a spectrum. Rather than attempting to establish some absolute principles, this essay identifies four trends that impact on this debate: (1) there are, and always have been, legitimate debates about the--absolute--beneficence of…

  15. Multichannel error correction code decoder

    NASA Technical Reports Server (NTRS)

    Wagner, Paul K.; Ivancic, William D.

    1993-01-01

    A brief overview of a processing satellite for a mesh very-small-aperture (VSAT) communications network is provided. The multichannel error correction code (ECC) decoder system, the uplink signal generation and link simulation equipment, and the time-shared decoder are described. The testing is discussed. Applications of the time-shared decoder are recommended.

  16. Literacy in Corrections: What's Happening?

    ERIC Educational Resources Information Center

    Manitoba Dept. of Education and Training, Winnipeg. Literacy Office.

    In the past several years, almost all provincial and federal correctional institutions in Canada have established literacy programming. Current programming is organized in three potential combinations: peer tutoring, tutoring by community volunteers, and paid staff. Each strand has advantages and disadvantages. The Manitoba Literacy Office (MLO)…

  17. Community-Based Correctional Education

    ERIC Educational Resources Information Center

    Office of Vocational and Adult Education, US Department of Education, 2011

    2011-01-01

    Although it is known that many persons under community supervision need and eventually want correctional education programs, little is known about the providers and characteristics of these educational programs. This report provides an overview of initiatives at the national and state levels supporting new approaches to community supervision and…

  18. ADMINISTRATIVE GUIDE IN SPEECH CORRECTION.

    ERIC Educational Resources Information Center

    HEALEY, WILLIAM C.

    WRITTEN PRIMARILY FOR SCHOOL SUPERINTENDENTS, PRINCIPALS, SPEECH CLINICIANS, AND SUPERVISORS, THIS GUIDE OUTLINES THE MECHANICS OF ORGANIZING AND CONDUCTING SPEECH CORRECTION ACTIVITIES IN THE PUBLIC SCHOOLS. IT INCLUDES THE REQUIREMENTS FOR CERTIFICATION OF A SPEECH CLINICIAN IN MISSOURI AND DESCRIBES ESSENTIAL STEPS FOR THE DEVELOPMENT OF A…

  19. Speech Correction in the Schools.

    ERIC Educational Resources Information Center

    Eisenson, Jon; Ogilvie, Mardel

    An introduction to the problems and therapeutic needs of school age children whose speech requires remedial attention, the text is intended for both the classroom teacher and the speech correctionist. General considerations include classification and incidence of speech defects, speech correction services, the teacher as a speaker, the mechanism…

  20. The Politics of Political Correctness.

    ERIC Educational Resources Information Center

    Minsky, Leonard

    1992-01-01

    This article reacts to President Bush's entry into the dispute over "political correctness" on college campuses. The paper summarizes discussions of students, faculty, and others in the Washington, D.C. area which concluded that this seeming defense of free speech is actually an attack on affirmative action and multiculturalism stemming…

  1. Corrective Physical Education. Revised Edition.

    ERIC Educational Resources Information Center

    Wilmington Public Schools, DE.

    This guide, prepared to assist students who have postural and other remedial defects, is divided into four sections. Section one outlines the organization and administration of a remedial physical education program and gives information concerning the administration of alignment tests and corrections. Section two discusses anteroposterior…

  2. A Bibliography for Correctional Education.

    ERIC Educational Resources Information Center

    Semberger, Franklin M.; And Others

    Recently, academic and vocational educators, as well as most of those charged with custody, have begun to help rehabilitate prison inmates through such preparation as the development of trade skills, high school completion, and literacy training. There exist correctional institutions which provide excellent programs in many skills needed by the…

  3. Special Language and Political Correctness.

    ERIC Educational Resources Information Center

    Corbett, Jenny

    1994-01-01

    This article looks at the way in which the language used in relation to special education needs has changed and evolved since the 1960s, based on articles published in the British special education literature. Vocabulary, images, and attitudes are discussed in the context of political correctness and its impact on behavior. (DB)

  4. The Politics of Political Correctness.

    ERIC Educational Resources Information Center

    Minsky, Leonard

    1992-01-01

    This article reacts to President Bush's entry into the dispute over "political correctness" on college campuses. The paper summarizes discussions of students, faculty, and others in the Washington, D.C. area which concluded that this seeming defense of free speech is actually an attack on affirmative action and multiculturalism stemming…

  5. Political Correctness and American Academe.

    ERIC Educational Resources Information Center

    Drucker, Peter F.

    1994-01-01

    Argues that today's political correctness atmosphere is a throwback to attempts made by the Nazis and Stalinists to force society into conformity. Academia, it is claimed, is being forced to conform to gain control of the institution of higher education. It is predicted that this effort will fail. (GR)

  6. Teaching Politically without Political Correctness.

    ERIC Educational Resources Information Center

    Graff, Gerald

    2000-01-01

    Discusses how to bring political issues into the classroom, highlighting the influence of local context and noting conservative and liberal criticisms of political correctness. Suggests the need for a different idea of how to teach politically from the advocacy pedagogy advanced by recent critical educators, explaining that bringing students into…

  7. Written Corrective Feedback: Practitioners' Perspectives

    ERIC Educational Resources Information Center

    Evans, Norman W.; Hartshorn, K. James; Tuioti, Emily Allen

    2010-01-01

    Considerable attention has been given to written corrective feedback (WCF) in second language writing (L2) over the past several decades. One of the central questions has focused on the appropriateness of its use in L2 writing. In these academic discussions, scholars frequently describe how WCF is utilized in the classroom. However, many of these…

  8. "Free Speech" and "Political Correctness"

    ERIC Educational Resources Information Center

    Scott, Peter

    2016-01-01

    "Free speech" and "political correctness" are best seen not as opposing principles, but as part of a spectrum. Rather than attempting to establish some absolute principles, this essay identifies four trends that impact on this debate: (1) there are, and always have been, legitimate debates about the--absolute--beneficence of…

  9. Political Correctness and American Academe.

    ERIC Educational Resources Information Center

    Drucker, Peter F.

    1994-01-01

    Argues that today's political correctness atmosphere is a throwback to attempts made by the Nazis and Stalinists to force society into conformity. Academia, it is claimed, is being forced to conform to gain control of the institution of higher education. It is predicted that this effort will fail. (GR)

  10. Spectral relationships for atmospheric correction. II. Improving NASA's standard and MUMM near infra-red modeling schemes.

    PubMed

    Goyens, C; Jamet, C; Ruddick, K G

    2013-09-09

    Spectral relationships, reflecting the spectral dependence of water-leaving reflectance, ρw(λ), can be easily implemented in current AC algorithms with the aim to improve ρw(λ) retrievals where the algorithms fail. The present study evaluates the potential of spectral relationships to improve the MUMM [Ruddick et al., 2006, Limnol. Oceanogr. 51, 1167-1179] and standard NASA [Bailey et al., 2010, Opt. Express 18, 7521-7527] near infra-red (NIR) modeling schemes included in the AC algorithm to account for non-zero ρw(λNIR), based on in situ coastal ρw(λ) and simulated Rayleigh corrected reflectance data. Two modified NIR-modeling schemes are investigated: (1) the standard NASA NIR-modeling scheme is forced with bounding relationships in the red spectral domain and with a NIR polynomial relationship and, (2) the constant NIR ρw(λ) ratio used in the MUMM NIR-modeling scheme is replaced by a NIR polynomial spectral relationship. Results suggest that the standard NASA NIR-modeling scheme performs better for all turbidity ranges and in particular in the blue spectral domain (percentage bias decreased by approximately 50%) when it is forced with the red and NIR spectral relationships. However, with these new constraints, more reflectance spectra are flagged due to non-physical Chlorophyll-a concentration estimations. The new polynomial-based MUMM NIR-modeling scheme yielded lower ρw(λ) retrieval errors and particularly in extremely turbid waters. However, including the polynomial NIR relationship significantly increased the sensitivity of the algorithm to errors on the selected aerosol model from nearby clear water pixels.

  11. Internal Correction Of Errors In A DRAM

    NASA Technical Reports Server (NTRS)

    Zoutendyk, John A.; Watson, R. Kevin; Schwartz, Harvey R.; Nevill, Leland R.; Hasnain, Zille

    1989-01-01

    Error-correcting Hamming code built into circuit. A 256 K dynamic random-access memory (DRAM) circuit incorporates Hamming error-correcting code in its layout. Feature provides faster detection and correction of errors at less cost in amount of equipment, operating time, and software. On-chip error-correcting feature also makes new DRAM less susceptible to single-event upsets.

  12. 76 FR 15212 - Operations Specifications; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-21

    ... Federal Aviation Administration 14 CFR Part 129 RIN 2120-AJ45 Operations Specifications; Correction AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; correction. SUMMARY: The FAA is correcting... document. DATES: The final rule and this correction will become effective on April 11, 2011. FOR...

  13. 76 FR 30254 - Taxpayer Assistance Orders; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-25

    ... 9519] RIN 1545-BF33 Taxpayer Assistance Orders; Correction AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Correction to final regulations. SUMMARY: This document contains a correction to final...) relating to taxpayer assistance orders. DATES: This correction is effective May 25, 2011 and...

  14. 24 CFR 1720.515 - Corrections.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Corrections. 1720.515 Section 1720... Proceedings Hearings § 1720.515 Corrections. Corrections of the official transcript ordered by the administrative law judge shall be included in the record. Corrections shall not be ordered by the...

  15. 5 CFR 1601.34 - Error correction.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 3 2011-01-01 2011-01-01 false Error correction. 1601.34 Section 1601.34... Contribution Allocations and Interfund Transfer Requests § 1601.34 Error correction. Errors in processing... in the wrong investment fund, will be corrected in accordance with the error correction...

  16. 24 CFR 1720.515 - Corrections.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 5 2011-04-01 2011-04-01 false Corrections. 1720.515 Section 1720... Proceedings Hearings § 1720.515 Corrections. Corrections of the official transcript ordered by the administrative law judge shall be included in the record. Corrections shall not be ordered by the...

  17. 5 CFR 1601.34 - Error correction.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Error correction. 1601.34 Section 1601.34... Contribution Allocations and Interfund Transfer Requests § 1601.34 Error correction. Errors in processing... in the wrong investment fund, will be corrected in accordance with the error correction...

  18. Correctional Staff Training Institutes. Final Report.

    ERIC Educational Resources Information Center

    Southern Illinois Univ., East St. Louis, Center for the Study of Crime, Delinquency and Corrections.

    Three national institutes for correctional staff trainers incorporated new techniques in an attempt to upgrade corrections programs through improved staff development. There were 78 trainer and 200 middle management staff and correctional officers involved in the program, representing more than 100 correctional institutions in the United States.…

  19. 7 CFR 800.165 - Corrected certificates.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... this process shall be corrected according to this section. (b) Who may correct. Only official personnel.... According to this section and the instructions, corrected certificates shall show (i) the terms “Corrected... that has been superseded by another certificate or on the basis of a subsequent analysis for...

  20. MR image intensity inhomogeneity correction

    NASA Astrophysics Data System (ADS)

    (Vişan Pungǎ, Mirela; Moldovanu, Simona; Moraru, Luminita

    2015-01-01

    MR technology is one of the best and most reliable ways of studying the brain. Its main drawback is the so-called intensity inhomogeneity or bias field which impairs the visual inspection and the medical proceedings for diagnosis and strongly affects the quantitative image analysis. Noise is yet another artifact in medical images. In order to accurately and effectively restore the original signal, reference is hereof made to filtering, bias correction and quantitative analysis of correction. In this report, two denoising algorithms are used; (i) Basis rotation fields of experts (BRFoE) and (ii) Anisotropic Diffusion (when Gaussian noise, the Perona-Malik and Tukey's biweight functions and the standard deviation of the noise of the input image are considered).

  1. Radiometric correction of LANDSAT data

    NASA Technical Reports Server (NTRS)

    Dejesusparada, N.; Kumar, R. (Principal Investigator); Cavalcanti, L. A.

    1977-01-01

    The author has identified the following significant results. The six independent sensors of the multispectral band scanner are supposed to be identical; however, in actual practice, they may have different gain settings and offset factors, which result in the effect known as stripping (black lines at regular intervals) of the imagery. A simple two parameter method to correct the gain settings and offset factors of each of the sensors with respect to one sensor, taken as reference, was developed. This method assumes: (1) the response of a detector varies linearly with the radiance of radiation received, and (2) the means, as well as the standard deviations, of a reasonably large number of pixels, in a given wavelength band, are equal for each of the detectors for the radiometrically corrected data.

  2. Historical aspects of aberration correction.

    PubMed

    Rose, Harald H

    2009-06-01

    A brief history of the development of direct aberration correction in electron microscopy is outlined starting from the famous Scherzer theorem established in 1936. Aberration correction is the long story of many seemingly fruitless efforts to improve the resolution of electron microscopes by compensating for the unavoidable resolution-limiting aberrations of round electron lenses over a period of 50 years. The successful breakthrough, in 1997, can be considered as a quantum step in electron microscopy because it provides genuine atomic resolution approaching the size of the radius of the hydrogen atom. The additional realization of monochromators, aberration-free imaging energy filters and spectrometers has been leading to a new generation of analytical electron microscopes providing elemental and electronic information about the object on an atomic scale.

  3. Corrected body surface potential mapping.

    PubMed

    Krenzke, Gerhard; Kindt, Carsten; Hetzer, Roland

    2007-02-01

    In the method for body surface potential mapping described here, the influence of thorax shape on measured ECG values is corrected. The distances of the ECG electrodes from the electrical heart midpoint are determined using a special device for ECG recording. These distances are used to correct the ECG values as if they had been measured on the surface of a sphere with a radius of 10 cm with its midpoint localized at the electrical heart midpoint. The equipotential lines of the electrical heart field are represented on the virtual surface of such a sphere. It is demonstrated that the character of a dipole field is better represented if the influence of the thorax shape is reduced. The site of the virtual reference electrode is also important for the dipole character of the representation of the electrical heart field.

  4. Entropic corrections to Friedmann equations

    SciTech Connect

    Sheykhi, Ahmad

    2010-05-15

    Recently, Verlinde discussed that gravity can be understood as an entropic force caused by changes in the information associated with the positions of material bodies. In Verlinde's argument, the area law of the black hole entropy plays a crucial role. However, the entropy-area relation can be modified from the inclusion of quantum effects, motivated from the loop quantum gravity. In this note, by employing this modified entropy-area relation, we derive corrections to Newton's law of gravitation as well as modified Friedmann equations by adopting the viewpoint that gravity can be emerged as an entropic force. Our study further supports the universality of the log correction and provides a strong consistency check on Verlinde's model.

  5. Surgical correction of "rhinoplastic look".

    PubMed

    Sciuto, S; Bianco, N

    2013-06-01

    A pointed, narrow and exaggeratedly upturned nasal tip and concave dorsal profile can give the nose an unnatural and artificial appearance that is the unmistakable hallmark of plastic surgery. As a result of changes in social attitudes, noses that have evidently been operated on are no longer acceptable and requests are made for correction. While a more natural dorsal profile can be obtained with camouflage grafts of autologous cartilage or alloplastic material (EPTFE), autologous grafts alone are used to reconstruct the tip. The most complex correction regards an obtuse nasolabial angle, for which the extension graft technique is used. Particular care must be taken during preoperative planning, where the aid of computer simulation and agreement with the patient are essential.

  6. Interaction and self-correction

    PubMed Central

    Satne, Glenda L.

    2014-01-01

    In this paper, I address the question of how to account for the normative dimension involved in conceptual competence in a naturalistic framework. First, I present what I call the naturalist challenge (NC), referring to both the phylogenetic and ontogenetic dimensions of conceptual possession and acquisition. I then criticize two models that have been dominant in thinking about conceptual competence, the interpretationist and the causalist models. Both fail to meet NC, by failing to account for the abilities involved in conceptual self-correction. I then offer an alternative account of self-correction that I develop with the help of the interactionist theory of mutual understanding arising from recent developments in phenomenology and developmental psychology. PMID:25101044

  7. Trajectory correction propulsion for TOPS

    NASA Technical Reports Server (NTRS)

    Long, H. R.; Bjorklund, R. A.

    1972-01-01

    A blowdown-pressurized hydrazine propulsion system was selected to provide trajectory correction impulse for outer planet flyby spacecraft as the result of cost/mass/reliability tradeoff analyses. Present hydrazine component and system technology and component designs were evaluated for application to the Thermoelectric Outer Planet Spacecraft (TOPS); while general hydrazine technology was adequate, component design changes were deemed necessary for TOPS-type missions. A prototype hydrazine propulsion system was fabricated and fired nine times for a total of 1600 s to demonstrate the operation and performance of the TOPS propulsion configuration. A flight-weight trajectory correction propulsion subsystem (TCPS) was designed for the TOPS based on actual and estimated advanced components.

  8. Holographic superconductors with Weyl corrections

    NASA Astrophysics Data System (ADS)

    Momeni, Davood; Raza, Muhammad; Myrzakulov, Ratbay

    2016-10-01

    A quick review on the analytical aspects of holographic superconductors (HSCs) with Weyl corrections has been presented. Mainly, we focus on matching method and variational approaches. Different types of such HSC have been investigated — s-wave, p-wave and Stúckelberg ones. We also review the fundamental construction of a p-wave type, in which the non-Abelian gauge field is coupled to the Weyl tensor. The results are compared from numerics to analytical results.

  9. [Correction of hyperlipidemia with Allicor].

    PubMed

    Andrianova, I V; Demidova, O M; Medvedeva, L A; Latyshev, O A

    2004-01-01

    The hypocholesterolemic action of long-acting garlic powder tablets Allicor was investigated in a double-blind placebo-controlled study in men with mild hypercholesterolemia. Group 1 received allicor in a daily dose 600 mg, group 2 received placebo. The results show that allicor lowers total cholesterol, LDLP cholesterol, raises HDLP cholesterol and therefore can be recommended for correction of lipid content in patients with moderate hyperlipidemia.

  10. Molecfit: Telluric absorption correction tool

    NASA Astrophysics Data System (ADS)

    Smette, A.; Kausch, W.; Sana, H.; Noll, S.; Horst, H.; Kimeswenger, S.; Barden, M.; Szyszka, C.; Jones, A. M.; Gallene, A.; Vinther, J.; Ballester, P.; Kerber, F.

    2015-01-01

    Molecfit corrects astronomical observations for atmospheric absorption features based on fitting synthetic transmission spectra to the astronomical data, which saves a significant amount of valuable telescope time and increases the instrumental efficiency. Molecfit can also estimate molecular abundances, especially the water vapor content of the Earth’s atmosphere. The tool can be run from a command-line or more conveniently through a GUI.

  11. Correctness criteria for process migration

    NASA Technical Reports Server (NTRS)

    Lu, Chin; Liu, J. W. S.

    1987-01-01

    Two correctness criteria, the state consistency criterion and the property consistency criterion for process migration are discussed. The state machine approach is used to model the interactions between a user process and its environment. These criteria are defined in terms of the model. The idea of environment view was introduced to distinguish what a user process observes about its environment from what its environment state really is and argue that a consistent view of the environment must be maintained for every migrating process.

  12. Lightweight Specifications for Parallel Correctness

    DTIC Science & Technology

    2012-12-05

    this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204... George Necula Professor David Wessel Fall 2012 1 Abstract Lightweight Specifications for Parallel Correctness by Jacob Samuels Burnim Doctor of Philosophy...enthusiasm and endless flow of ideas, and for his keen research sense. I would also like to thank George Necula for chairing my qualifying exam committee and

  13. Dark energy from gravitational corrections

    NASA Astrophysics Data System (ADS)

    Abe, Yugo; Horikoshi, Masaatsu; Kawamura, Yoshiharu

    2017-03-01

    We study physics concerning the cosmological constant problem in the framework of effective field theory and suggest that a dominant part of dark energy can originate from gravitational corrections of vacuum energy, under the assumption that the classical gravitational fields do not couple to a large portion of the vacuum energy effectively, in spite of the coupling between graviton and matters at a microscopic level. Our speculation is excellent with terascale supersymmetry.

  14. The Mathematical Structure of Error Correction Models.

    DTIC Science & Technology

    1985-05-01

    The error correction model for a vector valued time series has been proposed and applied in the economic literature with the papers by Sargan (1964...the notion of cointegratedness of a vector process and showed the relation between cointegration and error correction models. This paper defines a...general error correction model, that encompasses the usual error correction model as well as the integral correction model by allowing a finite number of

  15. Statistical correction on LIFPA measurement

    NASA Astrophysics Data System (ADS)

    Zhao, Wei; Yang, Fang; Wang, Guiren

    2014-11-01

    Laser Induced Fluorescence Photobleaching Anemometer (LIFPA) has been applied for velocity fluctuation measurement in micro electrokinetic turbulence in microfluidics. However, due to the intrinsic drawback of LIFPA, i.e. single-point and 1D measurement, LIFPA cannot distinguish velocity components on each directions and should rely on Taylor's Hypothesis to get spatial series of velocity. Hence, the measurement will have error compared to the actual flow field. Here, the statistical errors of LIFPA measurement, due to 3D flows and Taylor's Hypothesis, are theoretically estimated. We derived the correction formulas based on the work of Ewing and George (2000) and estimated the correction factor of LIFPA in the direction parallel to laser beam. The influences of directional correction factors on both LIFPA and single-wire Hot-Wire Anemometer (HWA) measurements are also investigated and compared. Later, first derivation variance (FDV) of velocity fluctuation by both Taylor's Hypothesis and Local Taylor's Hypothesis (Pinton and Labbe 1994) are compared in microfluidics. It is found the error due to Taylor's Hypothesis is negligible. And the 3D flow influence on the FDV of velocity fluctuations in LIFPA is smaller than in HWA measurement. The work was supported by NSF under Grant No. CAREER CBET-0954977, MRI CBET-1040227, and NSF EPSCoR Award, EPS-1317771 respectively.

  16. Quantum Corrections to Entropic Gravity

    NASA Astrophysics Data System (ADS)

    Chen, Pisin; Wang, Chiao-Hsuan

    2013-01-01

    The entropic gravity scenario recently proposed by Erik Verlinde reproduced Newton's law of purely classical gravity yet the key assumptions of this approach all have quantum mechanical origins. As is typical for emergent phenomena in physics, the underlying, more fundamental physics often reveals itself as corrections to the leading classical behavior. So one naturally wonders: where is ℏ hiding in entropic gravity? To address this question, we first revisit the idea of holographic screen as well as entropy and its variation law in order to obtain a self-consistent approach to the problem. Next we argue that since the concept of minimal length has been invoked in the Bekenstein entropic derivation, the generalized uncertainty principle (GUP), which is a direct consequence of the minimal length, should be taken into consideration in the entropic interpretation of gravity. Indeed based on GUP it has been demonstrated that the black hole Bekenstein entropy area law must be modified not only in the strong but also in the weak gravity regime where in the weak gravity limit the GUP modified entropy exhibits a logarithmic correction. When applying it to the entropic interpretation, we demonstrate that the resulting gravity force law does include sub-leading order correction terms that depend on ℏ. Such deviation from the classical Newton's law may serve as a probe to the validity of entropic gravity.

  17. Quantum Corrections to Entropic Gravity

    NASA Astrophysics Data System (ADS)

    Chen, Pisin; Wang, Chiao-Hsuan

    2013-12-01

    The entropic gravity scenario recently proposed by Erik Verlinde reproduced Newton's law of purely classical gravity yet the key assumptions of this approach all have quantum mechanical origins. As is typical for emergent phenomena in physics, the underlying, more fundamental physics often reveals itself as corrections to the leading classical behavior. So one naturally wonders: where is ħ hiding in entropic gravity? To address this question, we first revisit the idea of holographic screen as well as entropy and its variation law in order to obtain a self-consistent approach to the problem. Next we argue that as the concept of minimal length has been invoked in the Bekenstein entropic derivation, the generalized uncertainty principle (GUP), which is a direct consequence of the minimal length, should be taken into consideration in the entropic interpretation of gravity. Indeed based on GUP it has been demonstrated that the black hole Bekenstein entropy area law must be modified not only in the strong but also in the weak gravity regime where in the weak gravity limit the GUP modified entropy exhibits a logarithmic correction. When applying it to the entropic interpretation, we demonstrate that the resulting gravity force law does include sub-leading order correction terms that depend on ħ. Such deviation from the classical Newton's law may serve as a probe to the validity of entropic gravity.

  18. Corrective osteotomies in spine surgery.

    PubMed

    Gill, J Brian; Levin, Andrew; Burd, Tim; Longley, Michael

    2008-11-01

    Spinal deformities can result in increasing thoracic kyphosis or loss of lumbar lordosis, leading to imbalance in the sagittal plane. Such deformities can be functionally and psychologically debilitating. The Smith-Petersen osteotomy can achieve approximately 10 degrees of correction in the sagittal plane at each spinal level at which it is performed. This osteotomy is beneficial for patients who have a degenerative imbalance in the sagittal plane. The pedicle subtraction osteotomy can achieve approximately 30 degrees to 40 degrees of correction in the sagittal plane at each spinal level at which it is performed. It is the preferred osteotomy for patients with ankylosing spondylitis who have an imbalance of the spine in the sagittal plane. The cervical extension osteotomy is performed in the cervical spine, at the cervicothoracic junction, in patients who have a cervical flexion deformity that impedes their ability to look straight ahead while walking or who have difficulty swallowing. The vertebral column resection is used when the imbalance is severe enough that the other osteotomies cannot correct the deformity, especially in patients who have a combined sagittal and coronal spinal imbalance. Neurologic problems, whether transient or permanent, are the most commonly encountered complications following these procedures. Recent results have shown a high patient satisfaction rate and good functional outcomes after spinal osteotomies done to treat a variety of disorders.

  19. Homogeneous coordinates in motion correction.

    PubMed

    Zahneisen, Benjamin; Ernst, Thomas

    2016-01-01

    Prospective motion correction for MRI and other imaging modalities are commonly based on the assumption of affine motion, i.e., rotations, shearing, scaling and translations. In addition it often involves transformations between different reference frames, especially for applications with an external tracking device. The goal of this work is to develop a computational framework for motion correction based on homogeneous transforms. The homogeneous representation of affine transformations uses 4 × 4 transformation matrices applied to four-dimensional augmented vectors. It is demonstrated how homogenous transforms can be used to describe the motion of slice objects during an MRI scan. Furthermore, we extend the concept of homogeneous transforms to gradient and k-space vectors, and show that the fourth dimension of an augmented k-space vector encodes the complex phase of the corresponding signal sample due to translations. The validity of describing motion tracking in real space and k-space using homogeneous transformations only is demonstrated on phantom experiments. Homogeneous transformations allows for a conceptually simple, consistent and computationally efficient theoretical framework for motion correction applications. © 2015 Wiley Periodicals, Inc.

  20. Correction of postburn equinus deformity.

    PubMed

    Hur, Gi-Yeun; Rhee, Byung-Jun; Ko, Jang-Hyu; Seo, Dong-Kook; Choi, Jai-Koo; Jang, Young-Chul; Lee, Jong-Wook

    2013-03-01

    Equinus deformity is characterized by an abnormal tiptoe gait and does not allow normal walking, hence needing correction. Congenital causes of equinus deformity include neurological diseases such as cerebral palsy and poliomyelitis. Acquired causes include injuries such as extensive trauma. We have corrected equinus deformity from extensive lower leg burns by a single operation through excisional release of the scar, Achilles lengthening, and radial forearm free flap. Fifteen patients with postburn equinus deformity who were treated between January 2000 and March 2012 were retrospectively studied. We investigated their age, sex, cause and severity of burn injury, equinus degree, ankle range of motion and the changes in the activity, extent of Achilles lengthening, flap size, complication, and the recurrence in these patients. The average degree of equinus deformity before the operation was 45 degrees. With an average Achilles lengthening of 4.6 cm, all patients achieved neutral position. The patients who had poor activity due to tiptoe gait before the operation showed good to fair levels of walking ability postoperatively. During an average follow-up period of 3 years and 9 months, no patients had a recurrence. Equinus deformity causes significant restrictions to walking and the reconstruction is a challenging problem. Although prevention is more important during the initial stages of treatment, we have successfully corrected patients with existing equinus deformity by scar release, Z-tenoplasty of Achilles, and radial forearm free flap.

  1. Adaptive correction of ensemble forecasts

    NASA Astrophysics Data System (ADS)

    Pelosi, Anna; Battista Chirico, Giovanni; Van den Bergh, Joris; Vannitsem, Stephane

    2017-04-01

    Forecasts from numerical weather prediction (NWP) models often suffer from both systematic and non-systematic errors. These are present in both deterministic and ensemble forecasts, and originate from various sources such as model error and subgrid variability. Statistical post-processing techniques can partly remove such errors, which is particularly important when NWP outputs concerning surface weather variables are employed for site specific applications. Many different post-processing techniques have been developed. For deterministic forecasts, adaptive methods such as the Kalman filter are often used, which sequentially post-process the forecasts by continuously updating the correction parameters as new ground observations become available. These methods are especially valuable when long training data sets do not exist. For ensemble forecasts, well-known techniques are ensemble model output statistics (EMOS), and so-called "member-by-member" approaches (MBM). Here, we introduce a new adaptive post-processing technique for ensemble predictions. The proposed method is a sequential Kalman filtering technique that fully exploits the information content of the ensemble. One correction equation is retrieved and applied to all members, however the parameters of the regression equations are retrieved by exploiting the second order statistics of the forecast ensemble. We compare our new method with two other techniques: a simple method that makes use of a running bias correction of the ensemble mean, and an MBM post-processing approach that rescales the ensemble mean and spread, based on minimization of the Continuous Ranked Probability Score (CRPS). We perform a verification study for the region of Campania in southern Italy. We use two years (2014-2015) of daily meteorological observations of 2-meter temperature and 10-meter wind speed from 18 ground-based automatic weather stations distributed across the region, comparing them with the corresponding COSMO

  2. Bias correction with Data Assimilation

    NASA Astrophysics Data System (ADS)

    Canter, Martin; Barth, Alexander

    2015-04-01

    With this work, we aim at developping a new method of bias correction using data assimilation. This method is based on the stochastic forcing of a model to correct bias. First, through a preliminary run, we estimate the bias of the model and its possible sources. Then, we establish a forcing term which is directly added inside the model's equations. We create an ensemble of runs and consider the forcing term as a control variable during the assimilation of observations. We then use this analysed forcing term to correct the bias of the model. Since the forcing is added inside the model, it acts as a source term, unlike external forcings such as wind. This procedure has been developed and successfully tested with a twin experiment on a Lorenz 95 model. Indeed, we were able to estimate and recover an artificial bias that had been added into the model. This bias had a spatial structure and was constant through time. The mean and behaviour of the corrected model corresponded to those the reference model. It is currently being applied and tested on the sea ice ocean NEMO LIM model, which is used in the PredAntar project. NEMO LIM is a global and low resolution (2 degrees) coupled model (hydrodynamic model and sea ice model) with long time steps allowing simulations over several decades. Due to its low resolution, the model is subject to bias in area where strong currents are present. We aim at correcting this bias by using perturbed current fields from higher resolution models and randomly generated perturbations. The random perturbations need to be constrained in order to respect the physical properties of the ocean, and not create unwanted phenomena. To construct those random perturbations, we first create a random field with the Diva tool (Data-Interpolating Variational Analysis). Using a cost function, this tool penalizes abrupt variations in the field, while using a custom correlation length. It also decouples disconnected areas based on topography. Then, we filter

  3. Plans for Jet Energy Corrections at CMS

    NASA Astrophysics Data System (ADS)

    Mishra, Kalanand

    2009-05-01

    We present a plan for Jet Energy Corrections at CMS. Jet corrections at CMS will come initially from simulation tuned on test beam data, directly from collision data when available, and ultimately from a simulation tuned on collision data. The corrections will be factorized into a fixed sequence of sub-corrections associated with different detector and physics effects. The following three factors are minimum requirements for most analysis: offset corrections for pile-up and noise; correction for the response of the calorimeter as a function of jet pseudorapidity relative to the barrel; correction for the absolute response as a function of transverse momentum in the barrel. The required correction gives a jet Lorentz vector equivalent to the sum of particles in the jet cone emanating from a QCD hard collision. We discuss the status of these corrections, the planned data-driven techniques for their derivation, and their anticipated evolution with the stages of the CMS experiment.

  4. Radiosondes Corrected for Inaccuracy in RH Measurements

    DOE Data Explorer

    Miloshevich, Larry

    2008-01-15

    Corrections for inaccuracy in Vaisala radiosonde RH measurements have been applied to ARM SGP radiosonde soundings. The magnitude of the corrections can vary considerably between soundings. The radiosonde measurement accuracy, and therefore the correction magnitude, is a function of atmospheric conditions, mainly T, RH, and dRH/dt (humidity gradient). The corrections are also very sensitive to the RH sensor type, and there are 3 Vaisala sensor types represented in this dataset (RS80-H, RS90, and RS92). Depending on the sensor type and the radiosonde production date, one or more of the following three corrections were applied to the RH data: Temperature-Dependence correction (TD), Contamination-Dry Bias correction (C), Time Lag correction (TL). The estimated absolute accuracy of NIGHTTIME corrected and uncorrected Vaisala RH measurements, as determined by comparison to simultaneous reference-quality measurements from Holger Voemel's (CU/CIRES) cryogenic frostpoint hygrometer (CFH), is given by Miloshevich et al. (2006).

  5. 26 CFR 53.4961-1 - Abatement of second tier taxes for correction within correction period.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    .... For definitions of the terms second tier tax, taxable event, correct, and correction period, see § 53... correction period. If any taxable event is corrected during the correction period for the event, then any second tier tax imposed with respect to the event shall not be assessed. If the tax has been assessed, it...

  6. Surgical correction of pectus excavatum.

    PubMed

    Holcomb, G W

    1977-06-01

    It has been observed that some patients who had correction of funnel chest deformity by methods which failed to provide fixed elevation of the involved sternal segment developed progressive sagging in later years in spite of looking good at the operating table. This has led to the adoption of a new technique of double sternal support. This procedure has resulted in 35 of 37 children (94%) being classified as excellent or satisfactory. This double support was initially established in 1959 by overlapping the upper transsected sternum while maintaining elevation of the lower end with a soft tissue sling of perichondrium and intercostal muscle. Beginning in 1961, a rigid bridge of rib or stainless steel bar was substituted at the lower end of the sternum. This has provided better support and the current preference of using the steel bar has been validated in this group of patients. The few disappointments were related to removal of the bar earlier than desired, failure to excise all the protruding sternal cartilage stumps or rib graft tips and inability to cover the lateral sternal edges with pectoral muscles. If possible, the steel bar should not be removed before 12 mo. When these pitfalls were avoided, the results were almost uniformly excellent. The wisdom of excising all depressed cartilaginous segments, as advocated by Ravitch in 1949, has been substantiated. A submammary transverse incision has provided an excellent cosmetic appearance. The morbidity has been low and the mortality zero. In spite of the absence of objective evidence of cardiopulmonary dysfunction, there seems to be an almost uniform improvement in appearance and in patient activity following successful correction of the funnel chest. The latter may be as much a psychological response as a physiologic one. The low morbidity, satisfactory long term results, and general improvement in the patient's body image and outlook on life indicate the need to offer correction of the severe pectus excavatum

  7. Misalignment corrections in optical interconnects

    NASA Astrophysics Data System (ADS)

    Song, Deqiang

    Optical interconnects are considered a promising solution for long distance and high bitrate data transmissions, outperforming electrical interconnects in terms of loss and dispersion. Due to the bandwidth and distance advantage of optical interconnects, longer links have been implemented with optics. Recent studies show that optical interconnects have clear advantages even at very short distances---intra system interconnects. The biggest challenge for such optical interconnects is the alignment tolerance. Many free space optical components require very precise assembly and installation, and therefore the overall cost could be increased. This thesis studied the misalignment tolerance and possible alignment correction solutions for optical interconnects at backplane or board level. First the alignment tolerance for free space couplers was simulated and the result indicated the most critical alignments occur between the VCSEL, waveguide and microlens arrays. An in-situ microlens array fabrication method was designed and experimentally demonstrated, with no observable misalignment with the waveguide array. At the receiver side, conical lens arrays were proposed to replace simple microlens arrays for a larger angular alignment tolerance. Multilayer simulation models in CodeV were built to optimized the refractive index and shape profiles of the conical lens arrays. Conical lenses fabricated with micro injection molding machine and fiber etching were characterized. Active component VCSOA was used to correct misalignment in optical connectors between the board and backplane. The alignment correction capability were characterized for both DC and AC (1GHz) optical signal. The speed and bandwidth of the VCSOA was measured and compared with a same structure VCSEL. Based on the optical inverter being studied in our lab, an all-optical flip-flop was demonstrated using a pair of VCSOAs. This memory cell with random access ability can store one bit optical signal with set or

  8. Quantum error correction for metrology.

    PubMed

    Kessler, E M; Lovchinsky, I; Sushkov, A O; Lukin, M D

    2014-04-18

    We propose and analyze a new approach based on quantum error correction (QEC) to improve quantum metrology in the presence of noise. We identify the conditions under which QEC allows one to improve the signal-to-noise ratio in quantum-limited measurements, and we demonstrate that it enables, in certain situations, Heisenberg-limited sensitivity. We discuss specific applications to nanoscale sensing using nitrogen-vacancy centers in diamond in which QEC can significantly improve the measurement sensitivity and bandwidth under realistic experimental conditions.

  9. Wall interference assessment and corrections

    NASA Technical Reports Server (NTRS)

    Newman, P. A.; Kemp, W. B., Jr.; Garriz, J. A.

    1989-01-01

    Wind tunnel wall interference assessment and correction (WIAC) concepts, applications, and typical results are discussed in terms of several nonlinear transonic codes and one panel method code developed for and being implemented at NASA-Langley. Contrasts between 2-D and 3-D transonic testing factors which affect WIAC procedures are illustrated using airfoil data from the 0.3 m Transonic Cryogenic Tunnel and Pathfinder 1 data from the National Transonic Facility. Initial results from the 3-D WIAC codes are encouraging; research on and implementation of WIAC concepts continue.

  10. Ilizarov principles of deformity correction.

    PubMed

    Spiegelberg, B; Parratt, T; Dheerendra, S K; Khan, W S; Jennings, R; Marsh, D R

    2010-03-01

    Ilizarov frames provide a versatile fixation system for the management of bony deformities, fractures and their complications. The frames give stability, soft tissue preservation, adjustability and functionality allowing bone to realise its full osteogenic potential. It is important that we have a clear and concise understanding of the Ilizarov principles of deformity correction to best make use of this fixation system. In this review article, the history of Ilizarov frame, the basic sciences behind it, the mechanical principles governing its use and the clinical use of the fixation system are discussed.

  11. Correction of Distributed Optical Aberrations

    SciTech Connect

    Baker, K; Olivier, S; Carrano, C; Phillion, D

    2006-02-12

    The objective of this project was to demonstrate the use of multiple distributed deformable mirrors (DMs) to improve the performance of optical systems with distributed aberrations. This concept is expected to provide dramatic improvement in the optical performance of systems in applications where the aberrations are distributed along the optical path or within the instrument itself. Our approach used multiple actuated DMs distributed to match the aberration distribution. The project developed the algorithms necessary to determine the required corrections and simulate the performance of these multiple DM systems.

  12. Ilizarov principles of deformity correction

    PubMed Central

    Spiegelberg, B; Parratt, T; Dheerendra, SK; Khan, WS; Jennings, R; Marsh, DR

    2010-01-01

    Ilizarov frames provide a versatile fixation system for the management of bony deformities, fractures and their complications. The frames give stability, soft tissue preservation, adjustability and functionality allowing bone to realise its full osteogenic potential. It is important that we have a clear and concise understanding of the Ilizarov principles of deformity correction to best make use of this fixation system. In this review article, the history of Ilizarov frame, the basic sciences behind it, the mechanical principles governing its use and the clinical use of the fixation system are discussed. PMID:20353638

  13. Aberration correction of unstable resonators

    NASA Technical Reports Server (NTRS)

    Lang, Robert J. (Inventor)

    1994-01-01

    Construction of aspheric reflectors for unstable resonator lasers to provide an arbitrary laser mode inside the resonator to correct aberrations of an output beam by the construction of the shape of an end reflector opposite the output reflector of the resonator cavity, such as aberrations resulting from refraction of a beam exiting the solid of the resonator having an index of refraction greater than 1 or to produce an aberration in the output beam that will precisely compensate for the aberration of an optical train into which the resonator beam is coupled.

  14. Self-Correction and the Monitor: Percent of Errors Corrected of Those Attempted vs. Percent Corrected of All Errors Made.

    ERIC Educational Resources Information Center

    Krashen, Stephen D.

    1994-01-01

    Green and Hecht's (1992, 1993) data are consistent with the Monitor hypothesis, and their findings match Krashen's (1982) report: self-correction (SC) has only a modest overall effect. Their subjects' high accuracy of attempted corrections could be the result of subjects' limiting SC to easily correctable items. (Contains 10 references.) (Author)

  15. 76 FR 17485 - Meeting Notice Correction-Federal Interagency Committee on Emergency Medical Services; Correction...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-29

    ... Emergency Medical Services; Correction to Meeting Notice To Clarify Time Zone AGENCY: National Highway... Service (FICEMS) Teleconference Meeting. ACTION: Meeting Notice Correction--Federal Interagency Committee on Emergency Medical Services; Correction to Meeting Notice to clarify time zone. SUMMARY: NHTSA...

  16. CORRECTIVE ACTION PLAN FOR CORRECTIVE ACTION UNIT 543: LIQUID DISPOSAL UNITS, NEVADA TEST SITE, NEVADA

    SciTech Connect

    2006-09-01

    The purpose of this Corrective Action Plan is to provide the detailed scope of work required to implement the recommended corrective actions as specified in the approved Corrective Action Decision Document.

  17. Aberration correction past and present.

    PubMed

    Hawkes, P W

    2009-09-28

    Electron lenses are extremely poor: if glass lenses were as bad, we should see as well with the naked eye as with a microscope! The demonstration by Otto Scherzer in 1936 that skillful lens design could never eliminate the spherical and chromatic aberrations of rotationally symmetric electron lenses was therefore most unwelcome and the other great electron optician of those years, Walter Glaser, never ceased striving to find a loophole in Scherzer's proof. In the wartime and early post-war years, the first proposals for correcting C(s) were made and in 1947, in a second milestone paper, Scherzer listed these and other ways of correcting lenses; soon after, Dennis Gabor invented holography for the same purpose. These approaches will be briefly summarized and the work that led to the successful implementation of quadupole-octopole and sextupole correctors in the 1990 s will be analysed. In conclusion, the elegant role of image algebra in describing image formation and processing and, above all, in developing new methods will be mentioned.

  18. Corrective Action Sites around the Nation

    EPA Pesticide Factsheets

    Provide info to the public/community orgs, local officials & consultants on nearby corrective action cleanups, the status of the cleanup and future plans. Links to the Natl Corrective Action, Cleanups in My Community & Cleaning Up Our Land, Water & Air

  19. 78 FR 6108 - Sunshine Act Meeting; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-29

    ... From the Federal Register Online via the Government Publishing Office FEDERAL RETIREMENT THRIFT INVESTMENT BOARD Sunshine Act Meeting; Correction AGENCY: Federal Retirement Thrift Investment Board. ACTION: Sunshine Act meeting; correction. SUMMARY: The Federal Retirement Thrift Investment Board published a...

  20. 75 FR 17167 - Sunshine Act Meetings; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-05

    ... From the Federal Register Online via the Government Publishing Office ] NATIONAL COUNCIL ON DISABILITY Sunshine Act Meetings; Correction AGENCY: National Council on Disability. ACTION: Notice; correction. Type: Quarterly meeting. SUMMARY: NCD published a Sunshine Act Meeting Notice in the Federal...

  1. 75 FR 41530 - Petitions for Modification; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-16

    ... Safety and Health Administration Petitions for Modification; Correction AGENCY: Mine Safety and Health Administration, Labor. ACTION: Notice; correction. SUMMARY: The Mine Safety and Health Administration (MSHA... existing safety standards. The document contains an ] under II. Petitions for Modification,...

  2. 76 FR 8699 - Locomotive Safety Standards; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Railroad Administration 49 CFR Parts 229 and 238 RIN 2130-AC16 Locomotive Safety Standards; Correction AGENCY: Federal Railroad Administration (FRA), DOT. ACTION: Proposed rule; correction....

  3. 78 FR 5744 - Practice and Procedure; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-28

    ... From the Federal Register Online via the Government Publishing Office FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 1 Practice and Procedure; Correction AGENCY: Federal Communications Commission. ACTION: Correcting amendments. SUMMARY: The Federal Communications Commission published in the Federal Register...

  4. 78 FR 4766 - Authority Citation Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-23

    ... From the Federal Register Online via the Government Publishing Office SECURITIES AND EXCHANGE COMMISSION 17 CFR Part 200 Authority Citation Correction AGENCY: Securities and Exchange Commission. ACTION... subject to this correction included inaccurate amendatory instructions that resulted in the publication...

  5. Chromatic Correction for the RHIC Lattice

    SciTech Connect

    Lee, S. Y.

    1986-03-31

    We study the chromatic correction for the RHIC lattice. The scheme requires three families of sextupoles in the inner arc and outer arc respectively. It works very well to correct the tune and betatron amplitude modulations.

  6. 9 CFR 417.3 - Corrective actions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... ANALYSIS AND CRITICAL CONTROL POINT (HACCP) SYSTEMS § 417.3 Corrective actions. (a) The written HACCP plan shall identify the corrective action to be followed in response to a deviation from a critical...

  7. Working toward Literacy in Correctional Education ESL

    ERIC Educational Resources Information Center

    Gardner, Susanne

    2014-01-01

    Correctional Education English as a Second Language (ESL) literacy programs vary from state to state, region to region. Some states enroll their correctional ESL students in adult basic education (ABE) classes; other states have separate classes and programs. At the Maryland Correctional Institution in Jessup, the ESL class is a self-contained…

  8. Systems Research in Career Education in Corrections.

    ERIC Educational Resources Information Center

    Ryan, T. Antoinette

    Adult career education holds a great potential for redirecting and correcting offenders and for continuing development of staff in corrections. A systems approach to adult career education in the corrections setting can make this potential become a reality. This paper describes the implementation of systems research in this area. The process of…

  9. 26 CFR 53.4958-7 - Correction.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 17 2011-04-01 2011-04-01 false Correction. 53.4958-7 Section 53.4958-7... TAXES (CONTINUED) FOUNDATION AND SIMILAR EXCISE TAXES Second Tier Excise Taxes § 53.4958-7 Correction... this section describes the acceptable forms of correction. Paragraph (c) of this section defines...

  10. 76 FR 59908 - Chlorantraniliprole; Pesticide Tolerances; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-28

    ... AGENCY 40 CFR Part 180 Chlorantraniliprole; Pesticide Tolerances; Correction AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule; correction amendment. SUMMARY: EPA issued a final rule in the... this correction issued as a final rule? Section 553 of the Administrative Procedure Act (APA), 5...

  11. 78 FR 76193 - Special Notice; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-16

    ... AFFAIRS Special Notice; Correction AGENCY: National Cemetery Administration, Department of Veterans Affairs. ACTION: Notice; correction. SUMMARY: The Department of Veterans Affairs (VA) published a... 20420, at (202) 632-7492. Correction In FR Doc. 2900-0567, published on November 18, 2013, at 7,...

  12. 77 FR 74024 - Sunshine Act Meetings; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-12

    ... From the Federal Register Online via the Government Publishing Office INTER-AMERICAN FOUNDATION BOARD MEETING Sunshine Act Meetings; Correction AGENCY: Inter-American Foundation. ACTION: Correction. SUMMARY: This action corrects the order of the MATTERS TO BE CONSIDERED and the PORTIONS TO BE OPEN TO...

  13. 78 FR 11735 - Semiannual Regulatory Agenda; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-19

    ... February 19, 2013 Part II Small Business Administration Semiannual Regulatory Agenda; Correction #0;#0... ADMINISTRATION 13 CFR Ch. I Semiannual Regulatory Agenda; Correction AGENCY: U.S. Small Business Administration (SBA). ACTION: Semiannual Regulatory Agenda; correction. SUMMARY: This document contains a...

  14. 77 FR 22480 - Conduit Financing Arrangements; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-16

    ... Internal Revenue Service 26 CFR Part 1 RIN 1545-BH77 Conduit Financing Arrangements; Correction AGENCY... correction to final regulations (TD 9562) that were published in the Federal Register on Friday, December 9... arrangement. DATES: This correction is effective on April 16, 2012 and is applicable on December 9, 2011....

  15. 75 FR 43090 - Federal Acquisition Regulation; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ... Federal Acquisition Regulation; Correction AGENCY: Department of Defense (DoD), General Services... issuing a correction to FAR Case 2010-008, Recovery Act Subcontract Reporting Procedures (Item III), which.... Please cite FAC 2005-43; Correction. SUPPLEMENTARY INFORMATION: Background DoD, GSA and NASA published...

  16. 75 FR 2510 - Procurement List; Corrections

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-15

    ... PEOPLE WHO ARE BLIND OR SEVERELY DISABLED Procurement List; Corrections AGENCY: Committee for Purchase From People Who Are Blind or Severely Disabled. ACTION: A correction is made to the Federal Register... February 11, 2010. Action: A correction is made to the Federal Register published by the Committee...

  17. Correction magnet power supplies for APS machine

    SciTech Connect

    Kang, Y.G.

    1991-04-01

    A number of correction magnets are required for the advanced photon source (APS) machine to correct the beam. There are five kinds of correction magnets for the storage ring, two for the injector synchrotron, and two for the positron accumulator ring (PAR). Table I shoes a summary of the correction magnet power supplies for the APS machine. For the storage ring, the displacement of the quadrupole magnets due to the low frequency vibration below 25 Hz has the most significant effect on the stability of the positron closed orbit. The primary external source of the low frequency vibration is the ground motion of approximately 20 {mu}m amplitude, with frequency components concentrated below 10 Hz. These low frequency vibrations can be corrected by using the correction magnets, whose field strengths are controlled individually through the feedback loop comprising the beam position monitoring system. The correction field require could be either positive or negative. Thus for all the correction magnets, bipolar power supplies (BPSs) are required to produce both polarities of correction fields. Three different types of BPS are used for all the correction magnets. Type I BPSs cover all the correction magnets for the storage ring, except for the trim dipoles. The maximum output current of the Type I BPS is 140 Adc. A Type II BPS powers a trim dipole, and its maximum output current is 60 Adc. The injector synchrotron and PAR correction magnets are powered form Type III BPSs, whose maximum output current is 25 Adc.

  18. 21 CFR 120.10 - Corrective actions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... CONSUMPTION HAZARD ANALYSIS AND CRITICAL CONTROL POINT (HACCP) SYSTEMS General Provisions § 120.10 Corrective actions. Whenever a deviation from a critical limit occurs, a processor shall take corrective action by... a deviation from a critical limit. A corrective action plan that is appropriate for a...

  19. 78 FR 59798 - Small Business Subcontracting: Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-30

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION 13 CFR Part 125 RIN 3245-AG22 Small Business Subcontracting: Correction AGENCY: U.S. Small Business Administration. ACTION: Correcting amendments. SUMMARY: This document contains corrections to the...

  20. Magnetic correction of RHIC triplets

    SciTech Connect

    Wei, J.; Gupta, R.; Peggs, S.

    1993-01-01

    Triplets of large bore quadrupoles will be antisymmetrically placed on either side of all six intersection points of the Relativistic Heavy Ion collider (RHIC). In RHIC collision optics, the tiplets at the two experimental detectors are intended to enable the collision beta function to be reduced to the design goal of [beta][sup *] = 1.0 meter in both planes, in order to minimize the spot size and maximize the luminosity. This requires running with [beta][sub max] [approx] 1400 meters in the triplet, where the beams will have their largest size, both absolutely and as a fraction of the available aperture. Hence, the ultimate performance of RHIC rests on achieving the highest possible magnetic field quality in the triplets. This paper discusses the correction of magnetic errors expected in the quadrupole bodies and ends, using both these limped correctors and also quadrupole body tuning shims.

  1. Magnetic correction of RHIC triplets

    SciTech Connect

    Wei, J.; Gupta, R.; Peggs, S.

    1993-06-01

    Triplets of large bore quadrupoles will be antisymmetrically placed on either side of all six intersection points of the Relativistic Heavy Ion collider (RHIC). In RHIC collision optics, the tiplets at the two experimental detectors are intended to enable the collision beta function to be reduced to the design goal of {beta}{sup *} = 1.0 meter in both planes, in order to minimize the spot size and maximize the luminosity. This requires running with {beta}{sub max} {approx} 1400 meters in the triplet, where the beams will have their largest size, both absolutely and as a fraction of the available aperture. Hence, the ultimate performance of RHIC rests on achieving the highest possible magnetic field quality in the triplets. This paper discusses the correction of magnetic errors expected in the quadrupole bodies and ends, using both these limped correctors and also quadrupole body tuning shims.

  2. Quantum Error Correction for Metrology

    NASA Astrophysics Data System (ADS)

    Sushkov, Alex; Kessler, Eric; Lovchinsky, Igor; Lukin, Mikhail

    2014-05-01

    The question of the best achievable sensitivity in a quantum measurement is of great experimental relevance, and has seen a lot of attention in recent years. Recent studies [e.g., Nat. Phys. 7, 406 (2011), Nat. Comms. 3, 1063 (2012)] suggest that in most generic scenarios any potential quantum gain (e.g. through the use of entangled states) vanishes in the presence of environmental noise. To overcome these limitations, we propose and analyze a new approach to improve quantum metrology based on quantum error correction (QEC). We identify the conditions under which QEC allows one to improve the signal-to-noise ratio in quantum-limited measurements, and we demonstrate that it enables, in certain situations, Heisenberg-limited sensitivity. We discuss specific applications to nanoscale sensing using nitrogen-vacancy centers in diamond in which QEC can significantly improve the measurement sensitivity and bandwidth under realistic experimental conditions.

  3. [Selenium correction of male subfertility].

    PubMed

    Nikolaev, A A; Lutskiĭ, D L; Lozhkina, L V; Bochanovskiĭ, V A; Goncharova, L A

    1999-01-01

    To study the effect of selenium in subfertile men, three groups of men were studied. Group 1--31 subfertile men living in healthy environment, group 2--25 subfertile men exposed for a long time to low doses of gas containing hydrogen sulfide, group 3--control 43 fertile men. Men of groups 1 and 2 received 3 courses of selenium (3.5 microg/kg/day for 30 days). Before the treatment and after each course ejaculate fertility was assessed by spermogram, enzyme activity of alpha-amylase (EC 3.2.1.1) and lactate dehydrogenase (EC 1.1.1.27), concentrations of prostatic acid phosphatase, sperm-specific inhibitor tripsin and prostate-specific antigen. Selenium proved effective, the response being higher in group 2 than in group 1. The causes of this difference are discussed. It is thought possible to use selenium for correction of some subfertility forms in men.

  4. A quantum correction to chaos

    NASA Astrophysics Data System (ADS)

    Fitzpatrick, A. Liam; Kaplan, Jared

    2016-05-01

    We use results on Virasoro conformal blocks to study chaotic dynamics in CFT2 at large central charge c. The Lyapunov exponent λ L , which is a diagnostic for the early onset of chaos, receives 1 /c corrections that may be interpreted as {λ}_L=2π /β(1+12/c) . However, out of time order correlators receive other equally important 1 /c suppressed contributions that do not have such a simple interpretation. We revisit the proof of a bound on λ L that emerges at large c, focusing on CFT2 and explaining why our results do not conflict with the analysis leading to the bound. We also comment on relationships between chaos, scattering, causality, and bulk locality.

  5. Thermoelectric Corrections to Quantum Measurement

    NASA Astrophysics Data System (ADS)

    Bergfield, Justin; Ratner, Mark; Stafford, Charles; di Ventra, Massimiliano

    The voltage and temperature measured by a floating probe of a nonequilibrium quantum system is shown to exhibit nontrivial thermoelectric corrections at finite temperature. Using a realistic model of a scanning thermal microscope to calculate the voltage and temperature distributions, we predict quantum temperature variations along graphene nanoribbons subject to a thermal bias which are not simply related to the local density of states. Experimentally, the wavelength of the oscillations can be tuned over several orders of magnitude by gating/doping, bringing quantum temperature oscillations within reach of the spatial resolution of existing measurement techniques. We also find that the Peltier cooling/heating which causes the temperature oscillations can lead to significant errors in voltage measurements for a wide range of system.

  6. Salvage penile curvature correction surgery.

    PubMed

    Hsieh, Cheng-Hsing; Chen, Heng-Shuen; Lee, Wen-Yuan; Chen, Kuo-Liang; Chang, Chao-Hsiang; Hsu, Geng-Long

    2010-01-01

    It is commonly believed that coarser suture materials should be used to provide sufficient tenacity in surgery for penile curvature correction. We report our 15-year experience of fine sutures in a second operation in 31 patients who underwent prior curvature correction elsewhere with coarser sutures, resulting in recurrent penile curvature. Suture materials used in prior surgeries in these patients were either 2-0 or 3-0 nylon sutures. In this series, all 31 patients underwent a modified Nesbit procedure at the level of the collagen bundles using finer sutures. Prior to July 1998, 10 men underwent salvage surgery using 4-0 polyglactin sutures. Thereafter, we adapted 6-0 nylon sutures for another 21 patients. We categorized the patients into the polyglactin (n = 10) and nylon (n = 21) groups respectively. Overall, 29 patients were available for follow-up while using the abridged 5-item version of the International Index of Erectile Function (IIEF-5) scoring system, with 21 patients in the nylon group. We have found cavernosography a practical and reliable method to objectively assess penile morphology in these patients. The penile morphology both subjectively and objectively was excellent in all patients, except for 1 in each group. Erectile function restoration showed a trend of satisfaction in the polyglactin group and based on IIEF-5 was significantly improved in the nylon group (14.2 ± 3.6 vs 21.9 ± 2.1, n = 20, P < .001). These results suggest that in penile tunical surgery, fine sutures such as 6-0 nylon may result in better penile morphology and functional outcomes.

  7. Pulse compressor with aberration correction

    SciTech Connect

    Mankos, Marian

    2015-11-30

    In this SBIR project, Electron Optica, Inc. (EOI) is developing an electron mirror-based pulse compressor attachment to new and retrofitted dynamic transmission electron microscopes (DTEMs) and ultrafast electron diffraction (UED) cameras for improving the temporal resolution of these instruments from the characteristic range of a few picoseconds to a few nanoseconds and beyond, into the sub-100 femtosecond range. The improvement will enable electron microscopes and diffraction cameras to better resolve the dynamics of reactions in the areas of solid state physics, chemistry, and biology. EOI’s pulse compressor technology utilizes the combination of electron mirror optics and a magnetic beam separator to compress the electron pulse. The design exploits the symmetry inherent in reversing the electron trajectory in the mirror in order to compress the temporally broadened beam. This system also simultaneously corrects the chromatic and spherical aberration of the objective lens for improved spatial resolution. This correction will be found valuable as the source size is reduced with laser-triggered point source emitters. With such emitters, it might be possible to significantly reduce the illuminated area and carry out ultrafast diffraction experiments from small regions of the sample, e.g. from individual grains or nanoparticles. During phase I, EOI drafted a set of candidate pulse compressor architectures and evaluated the trade-offs between temporal resolution and electron bunch size to achieve the optimum design for two particular applications with market potential: increasing the temporal and spatial resolution of UEDs, and increasing the temporal and spatial resolution of DTEMs. Specialized software packages that have been developed by MEBS, Ltd. were used to calculate the electron optical properties of the key pulse compressor components: namely, the magnetic prism, the electron mirror, and the electron lenses. In the final step, these results were folded

  8. Rulison Site corrective action report

    SciTech Connect

    1996-09-01

    Project Rulison was a joint US Atomic Energy Commission (AEC) and Austral Oil Company (Austral) experiment, conducted under the AEC`s Plowshare Program, to evaluate the feasibility of using a nuclear device to stimulate natural gas production in low-permeability gas-producing geologic formations. The experiment was conducted on September 10, 1969, and consisted of detonating a 40-kiloton nuclear device at a depth of 2,568 m below ground surface (BGS). This Corrective Action Report describes the cleanup of petroleum hydrocarbon- and heavy-metal-contaminated sediments from an old drilling effluent pond and characterization of the mud pits used during drilling of the R-EX well at the Rulison Site. The Rulison Site is located approximately 65 kilometers (40 miles) northeast of Grand Junction, Colorado. The effluent pond was used for the storage of drilling mud during drilling of the emplacement hole for the 1969 gas stimulation test conducted by the AEC. This report also describes the activities performed to determine whether contamination is present in mud pits used during the drilling of well R-EX, the gas production well drilled at the site to evaluate the effectiveness of the detonation in stimulating gas production. The investigation activities described in this report were conducted during the autumn of 1995, concurrent with the cleanup of the drilling effluent pond. This report describes the activities performed during the soil investigation and provides the analytical results for the samples collected during that investigation.

  9. Are we counting mitoses correctly?

    PubMed

    Yigit, Nuri; Gunal, Armagan; Kucukodaci, Zafer; Karslioglu, Yildirim; Onguru, Onder; Ozcan, Ayhan

    2013-12-01

    The number of mitotic figures in a predefined area is essential in pathologic evaluation for most tumors. This information sometimes provides clues in differentiating neoplastic lesions from nonneoplastic ones and sometimes in defining and grading of the tumors as well as prognosticating expected lifetime of the patient. As a generally accepted concept, scanning a certain number of consecutive nonoverlapping areas that are rich in viable tumor cells is required. Invasion fronts or the periphery of the tumors is preferred for counting mitosis. The target area to be counted for mitotic activity for various tumors is standardized as the number of mitosis in an established number of high-power fields. However, suggested mitotic counts, which constitute the basis of these studies, were obtained via the old microscopes, which usually had narrower visual fields than the state-of-the-art microscopes. Because the visual fields of the present microscopes provide larger areas compared with the older ones, corrections in mitosis counting are needed to make them compatible with the criteria, which had been put forward in the original reference studies.

  10. Percentage of nonoverlapping corrected data.

    PubMed

    Manolov, Rumen; Solanas, Antonio

    2009-11-01

    In the present study, we proposed a modification in one of the most frequently applied effect-size procedures in single-case data analysis: the percentage of nonoverlapping data. In contrast with other techniques, the calculus and interpretation of this procedure are straightforward and can be easily complemented by visual inspection of the graphed data. Although the percentage of nonoverlapping data has been found to perform reasonably well in N = 1 data, the magnitude of effect estimates that it yields can be distorted by trend and autocorrelation. Therefore, the data-correction procedure focuses on removing the baseline trend from data prior to estimating the change produced in the behavior as a result of intervention. A simulation study was carried out in order to compare the original and the modified procedures in several experimental conditions. The results suggest that the new proposal is unaffected by trend and autocorrelation and that it can be used in case of unstable baselines and sequentially related measurements.

  11. Phase and birefringence aberration correction

    DOEpatents

    Bowers, Mark; Hankla, Allen

    1996-01-01

    A Brillouin enhanced four wave mixing phase conjugate mirror corrects phase aberrations of a coherent electromagnetic beam and birefringence induced upon that beam. The stimulated Brillouin scattering (SBS) phase conjugation technique is augmented to include Brillouin enhanced four wave mixing (BEFWM). A seed beam is generated by a main oscillator which arrives at the phase conjugate cell before the signal beams in order to initiate the Brillouin effect. The signal beam which is being amplified through the amplifier chain is split into two perpendicularly polarized beams. One of the two beams is chosen to be the same polarization as some component of the seed beam, the other orthogonal to the first. The polarization of the orthogonal beam is then rotated 90.degree. such that it is parallel to the other signal beam. The three beams are then focused into cell containing a medium capable of Brillouin excitation. The two signal beams are focused such that they cross the seed beam path before their respective beam waists in order to achieve BEFWM or the two signal beams are focused to a point or points contained within the focused cone angle of the seed beam to achieve seeded SBS, and thus negate the effects of all birefringent and material aberrations in the system.

  12. Phase and birefringence aberration correction

    DOEpatents

    Bowers, M.; Hankla, A.

    1996-07-09

    A Brillouin enhanced four wave mixing phase conjugate mirror corrects phase aberrations of a coherent electromagnetic beam and birefringence induced upon that beam. The stimulated Brillouin scattering (SBS) phase conjugation technique is augmented to include Brillouin enhanced four wave mixing (BEFWM). A seed beam is generated by a main oscillator which arrives at the phase conjugate cell before the signal beams in order to initiate the Brillouin effect. The signal beam which is being amplified through the amplifier chain is split into two perpendicularly polarized beams. One of the two beams is chosen to be the same polarization as some component of the seed beam, the other orthogonal to the first. The polarization of the orthogonal beam is then rotated 90{degree} such that it is parallel to the other signal beam. The three beams are then focused into cell containing a medium capable of Brillouin excitation. The two signal beams are focused such that they cross the seed beam path before their respective beam waists in order to achieve BEFWM or the two signal beams are focused to a point or points contained within the focused cone angle of the seed beam to achieve seeded SBS, and thus negate the effects of all birefringent and material aberrations in the system. 5 figs.

  13. Preferred color correction for digital LCD TVs

    NASA Astrophysics Data System (ADS)

    Kim, Kyoung Tae; Kim, Choon-Woo; Ahn, Ji-Young; Kang, Dong-Woo; Shin, Hyun-Ho

    2009-01-01

    Instead of colorimetirc color reproduction, preferred color correction is applied for digital TVs to improve subjective image quality. First step of the preferred color correction is to survey the preferred color coordinates of memory colors. This can be achieved by the off-line human visual tests. Next step is to extract pixels of memory colors representing skin, grass and sky. For the detected pixels, colors are shifted towards the desired coordinates identified in advance. This correction process may result in undesirable contours on the boundaries between the corrected and un-corrected areas. For digital TV applications, the process of extraction and correction should be applied in every frame of the moving images. This paper presents a preferred color correction method in LCH color space. Values of chroma and hue are corrected independently. Undesirable contours on the boundaries of correction are minimized. The proposed method change the coordinates of memory color pixels towards the target color coordinates. Amount of correction is determined based on the averaged coordinate of the extracted pixels. The proposed method maintains the relative color difference within memory color areas. Performance of the proposed method is evaluated using the paired comparison. Results of experiments indicate that the proposed method can reproduce perceptually pleasing images to viewers.

  14. Corrective Action Decision Document for Corrective Action Unit 340: Pesticide Release sites, Nevada Test Site, Nevada

    SciTech Connect

    DOE /NV

    1998-12-08

    This Corrective Action Decision Document has been prepared for Corrective Action Unit 340, the NTS Pesticide Release Sites, in accordance with the Federal Facility Agreement and Consent Order of 1996 (FFACO, 1996). Corrective Action Unit 340 is located at the Nevada Test Site, Nevada, and is comprised of the following Corrective Action Sites: 23-21-01, Area 23 Quonset Hut 800 Pesticide Release Ditch; 23-18-03, Area 23 Skid Huts Pesticide Storage; and 15-18-02, Area 15 Quonset Hut 15-11 Pesticide Storage. The purpose of this Corrective Action Decision Document is to identify and provide a rationale for the selection of a recommended corrective action alternative for each Corrective Action Site. The scope of this Corrective Action Decision Document consists of the following tasks: Develop corrective action objectives; Identify corrective action alternative screening criteria; Develop corrective action alternatives; Perform detailed and comparative evaluations of the corrective action alternatives in relation to the corrective action objectives and screening criteria; and Recommend and justify a preferred corrective action alternative for each Corrective Action Site.

  15. Motion correction in MRI of the brain

    NASA Astrophysics Data System (ADS)

    Godenschweger, F.; Kägebein, U.; Stucht, D.; Yarach, U.; Sciarra, A.; Yakupov, R.; Lüsebrink, F.; Schulze, P.; Speck, O.

    2016-03-01

    Subject motion in MRI is a relevant problem in the daily clinical routine as well as in scientific studies. Since the beginning of clinical use of MRI, many research groups have developed methods to suppress or correct motion artefacts. This review focuses on rigid body motion correction of head and brain MRI and its application in diagnosis and research. It explains the sources and types of motion and related artefacts, classifies and describes existing techniques for motion detection, compensation and correction and lists established and experimental approaches. Retrospective motion correction modifies the MR image data during the reconstruction, while prospective motion correction performs an adaptive update of the data acquisition. Differences, benefits and drawbacks of different motion correction methods are discussed.

  16. Proof-Carrying Code with Correct Compilers

    NASA Technical Reports Server (NTRS)

    Appel, Andrew W.

    2009-01-01

    In the late 1990s, proof-carrying code was able to produce machine-checkable safety proofs for machine-language programs even though (1) it was impractical to prove correctness properties of source programs and (2) it was impractical to prove correctness of compilers. But now it is practical to prove some correctness properties of source programs, and it is practical to prove correctness of optimizing compilers. We can produce more expressive proof-carrying code, that can guarantee correctness properties for machine code and not just safety. We will construct program logics for source languages, prove them sound w.r.t. the operational semantics of the input language for a proved-correct compiler, and then use these logics as a basis for proving the soundness of static analyses.

  17. Motion correction in MRI of the brain.

    PubMed

    Godenschweger, F; Kägebein, U; Stucht, D; Yarach, U; Sciarra, A; Yakupov, R; Lüsebrink, F; Schulze, P; Speck, O

    2016-03-07

    Subject motion in MRI is a relevant problem in the daily clinical routine as well as in scientific studies. Since the beginning of clinical use of MRI, many research groups have developed methods to suppress or correct motion artefacts. This review focuses on rigid body motion correction of head and brain MRI and its application in diagnosis and research. It explains the sources and types of motion and related artefacts, classifies and describes existing techniques for motion detection, compensation and correction and lists established and experimental approaches. Retrospective motion correction modifies the MR image data during the reconstruction, while prospective motion correction performs an adaptive update of the data acquisition. Differences, benefits and drawbacks of different motion correction methods are discussed.

  18. Motion correction in MRI of the brain

    PubMed Central

    Godenschweger, F; Kägebein, U; Stucht, D; Yarach, U; Sciarra, A; Yakupov, R; Lüsebrink, F; Schulze, P; Speck, O

    2016-01-01

    Subject motion in MRI is a relevant problem in the daily clinical routine as well as in scientific studies. Since the beginning of clinical use of MRI, many research groups have developed methods to suppress or correct motion artefacts. This review focuses on rigid body motion correction of head and brain MRI and its application in diagnosis and research. It explains the sources and types of motion and related artefacts, classifies and describes existing techniques for motion detection, compensation and correction and lists established and experimental approaches. Retrospective motion correction modifies the MR image data during the reconstruction, while prospective motion correction performs an adaptive update of the data acquisition. Differences, benefits and drawbacks of different motion correction methods are discussed. PMID:26864183

  19. Weather-Corrected Performance Ratio

    SciTech Connect

    Dierauf, T.; Growitz, A.; Kurtz, S.; Cruz, J. L. B.; Riley, E.; Hansen, C.

    2013-04-01

    Photovoltaic (PV) system performance depends on both the quality of the system and the weather. One simple way to communicate the system performance is to use the performance ratio (PR): the ratio of the electricity generated to the electricity that would have been generated if the plant consistently converted sunlight to electricity at the level expected from the DC nameplate rating. The annual system yield for flat-plate PV systems is estimated by the product of the annual insolation in the plane of the array, the nameplate rating of the system, and the PR, which provides an attractive way to estimate expected annual system yield. Unfortunately, the PR is, again, a function of both the PV system efficiency and the weather. If the PR is measured during the winter or during the summer, substantially different values may be obtained, making this metric insufficient to use as the basis for a performance guarantee when precise confidence intervals are required. This technical report defines a way to modify the PR calculation to neutralize biases that may be introduced by variations in the weather, while still reporting a PR that reflects the annual PR at that site given the project design and the project weather file. This resulting weather-corrected PR gives more consistent results throughout the year, enabling its use as a metric for performance guarantees while still retaining the familiarity this metric brings to the industry and the value of its use in predicting actual annual system yield. A testing protocol is also presented to illustrate the use of this new metric with the intent of providing a reference starting point for contractual content.

  20. Optimized entanglement-assisted quantum error correction

    SciTech Connect

    Taghavi, Soraya; Brun, Todd A.; Lidar, Daniel A.

    2010-10-15

    Using convex optimization, we propose entanglement-assisted quantum error-correction procedures that are optimized for given noise channels. We demonstrate through numerical examples that such an optimized error-correction method achieves higher channel fidelities than existing methods. This improved performance, which leads to perfect error correction for a larger class of error channels, is interpreted in at least some cases by quantum teleportation, but for general channels this interpretation does not hold.

  1. Empirical deadtime corrections at synchrotron sources.

    SciTech Connect

    Walko, D. A.; Arms, D. A.; Landahl, E. C.; X-Ray Science Division

    2008-01-01

    An experimental comparison of models for performing dead-time corrections of photon-counting detectors at synchrotron sources is presented. The performance of several detectors in the three operating modes of the Advanced Photon Source is systematically compared, with particular emphasis on asymmetric fill patterns. Several simple and well known correction formulas are evaluated. The results demonstrate the critical importance of detector speed and synchrotron fill pattern in selecting the proper dead-time correction.

  2. Empirical deadtime corrections for synchrotron sources.

    SciTech Connect

    Walko, D. A.; Arms, D. A.; Landahl, E. C.; X-Ray Science Division

    2008-01-01

    An experimental comparison of models for performing dead-time corrections of photon-counting detectors at synchrotron sources is presented. The performance of several detectors in the three operating modes of the Advanced Photon Source is systematically compared, with particular emphasis on asymmetric fill patterns. Several simple and well known correction formulas are evaluated. The results demonstrate the critical importance of detector speed and synchrotron fill pattern in selecting the proper dead-time correction.

  3. Corrected Entropy of BTZ Black Holes

    NASA Astrophysics Data System (ADS)

    Farahani, Hoda; Sadeghi, Jafar; Saadat, Hassan

    2012-12-01

    In this paper, corrected entropy of a class of BTZ black holes, include charge and rotation, studied. We obtain corrected Bekenstein-Hawking entropy and find that effect of charge viewed at order A -2, and effect of rotation viewed at order A -6, therefore Q and J don't have contribution in corrected entropy lower than the second order. We also write the first law of black hole thermodynamics for the case of charged rotating BTZ black hole.

  4. Corrective Optics For Camera On Telescope

    NASA Technical Reports Server (NTRS)

    Macenka, Steven A.; Meinel, Aden B.

    1994-01-01

    Assembly of tilted, aspherical circularly symmetric mirrors used as corrective optical subsystem for camera mounted on telescope exhibiting both large spherical wave-front error and inherent off-axis astigmatism. Subsystem provides unobscured camera aperture and diffraction-limited camera performance, despite large telescope aberrations. Generic configuration applied in other optical systems in which aberations deliberately introduced into telescopes and corrected in associated cameras. Concept of corrective optical subsystem provides designer with additional degrees of freedom used to optimize optical system.

  5. Class action litigation in correctional psychiatry.

    PubMed

    Metzner, Jeffrey L

    2002-01-01

    Class action litigation has been instrumental in jail and prison reform during the past two decades. Correctional mental health systems have significantly benefited from such litigation. Forensic psychiatrists have been crucial in the litigation process and the subsequent evolution of correctional mental health care systems. This article summarizes information concerning basic demographics of correctional populations and costs of correctional health care and provides a brief history of such litigation. The role of psychiatric experts, with particular reference to standards of care, is described. Specifically discussed are issues relevant to suicide prevention, the prevalence of mentally ill inmates in supermax prisons, and discharge planning.

  6. SPELLING CORRECTION IN THE PUBMED SEARCH ENGINE.

    PubMed

    Wilbur, W John; Kim, Won; Xie, Natalie

    2006-11-01

    It is known that users of internet search engines often enter queries with misspellings in one or more search terms. Several web search engines make suggestions for correcting misspelled words, but the methods used are proprietary and unpublished to our knowledge. Here we describe the methodology we have developed to perform spelling correction for the PubMed search engine. Our approach is based on the noisy channel model for spelling correction and makes use of statistics harvested from user logs to estimate the probabilities of different types of edits that lead to misspellings. The unique problems encountered in correcting search engine queries are discussed and our solutions are outlined.

  7. Underground storage tank corrective action technologies

    NASA Astrophysics Data System (ADS)

    Cochran, R.

    1987-01-01

    The document contains information on corrective action technologies for releases from underground storage tanks (UST). It probes general background information on UST construction techniques, leak detection methods, and failure mechanisms. It also addresses transport pathways of released substances, techniques for evaluating the extent of a release, factors influencing risk to human health and the environment, techniques for selecting initial corrective-action response technologies, and detailed technical profiles of corrective action technologies. Emphasis is on corrective actions associated with releases from gasoline and petroleum USTs.

  8. Quantum error correction via robust probe modes

    SciTech Connect

    Yamaguchi, Fumiko; Nemoto, Kae; Munro, William J.

    2006-06-15

    We propose a scheme for quantum error correction using robust continuous variable probe modes, rather than fragile ancilla qubits, to detect errors without destroying data qubits. The use of such probe modes reduces the required number of expensive qubits in error correction and allows efficient encoding, error detection, and error correction. Moreover, the elimination of the need for direct qubit interactions significantly simplifies the construction of quantum circuits. We will illustrate how the approach implements three existing quantum error correcting codes: the three-qubit bit-flip (phase-flip) code, the Shor code, and an erasure code.

  9. SPELLING CORRECTION IN THE PUBMED SEARCH ENGINE

    PubMed Central

    Wilbur, W. John; Kim, Won; Xie, Natalie

    2007-01-01

    It is known that users of internet search engines often enter queries with misspellings in one or more search terms. Several web search engines make suggestions for correcting misspelled words, but the methods used are proprietary and unpublished to our knowledge. Here we describe the methodology we have developed to perform spelling correction for the PubMed search engine. Our approach is based on the noisy channel model for spelling correction and makes use of statistics harvested from user logs to estimate the probabilities of different types of edits that lead to misspellings. The unique problems encountered in correcting search engine queries are discussed and our solutions are outlined. PMID:18080004

  10. Correction of subtle refractive error in aviators.

    PubMed

    Rabin, J

    1996-02-01

    Optimal visual acuity is a requirement for piloting aircraft in military and civilian settings. While acuity can be corrected with glasses, spectacle wear can limit or even prohibit use of certain devices such as night vision goggles, helmet mounted displays, and/or chemical protective masks. Although current Army policy is directed toward selection of pilots who do not require spectacle correction for acceptable vision, refractive error can become manifest over time, making optical correction necessary. In such cases, contact lenses have been used quite successfully. Another approach is to neglect small amounts of refractive error, provided that vision is at least 20/20 without correction. This report describes visual findings in an aviator who was fitted with a contact lens to correct moderate astigmatism in one eye, while the other eye, with lesser refractive error, was left uncorrected. Advanced methods of testing visual resolution, including high and low contrast visual acuity and small letter contrast sensitivity, were used to compare vision achieved with full spectacle correction to that attained with the habitual, contact lens correction. Although the patient was pleased with his habitual correction, vision was significantly better with full spectacle correction, particularly on the small letter contrast test. Implications of these findings are considered.

  11. Bayesian long branch attraction bias and corrections.

    PubMed

    Susko, Edward

    2015-03-01

    Previous work on the star-tree paradox has shown that Bayesian methods suffer from a long branch attraction bias. That work is extended to settings involving more taxa and partially resolved trees. The long branch attraction bias is confirmed to arise more broadly and an additional source of bias is found. A by-product of the analysis is methods that correct for biases toward particular topologies. The corrections can be easily calculated using existing Bayesian software. Posterior support for a set of two or more trees can thus be supplemented with corrected versions to cross-check or replace results. Simulations show the corrections to be highly effective.

  12. Color correction strategies in optical design

    NASA Astrophysics Data System (ADS)

    Pfisterer, Richard N.; Vorndran, Shelby D.

    2014-12-01

    An overview of color correction strategies is presented. Starting with basic first-order aberration theory, we identify known color corrected solutions for doublets and triplets. Reviewing the modern approaches of Robb-Mercado, Rayces-Aguilar, and C. de Albuquerque et al, we find that they confirm the existence of glass combinations for doublets and triplets that yield color corrected solutions that we already know exist. Finally we explore the use of the y, ӯ diagram in conjunction with aberration theory to identify the solution space of glasses capable of leading to color corrected solutions in arbitrary optical systems.

  13. POLYNOMIAL-BASED DISAGGREGATION OF HOURLY RAINFALL FOR CONTINUOUS HYDROLOGIC SIMULATION

    EPA Science Inventory

    Hydrologic modeling of urban watersheds for designs and analyses of stormwater conveyance facilities can be performed in either an event-based or continuous fashion. Continuous simulation requires, among other things, the use of a time series of rainfall amounts. However, for urb...

  14. POLYNOMIAL-BASED DISAGGREGATION OF HOURLY RAINFALL FOR CONTINUOUS HYDROLOGIC SIMULATION

    EPA Science Inventory

    Hydrologic modeling of urban watersheds for designs and analyses of stormwater conveyance facilities can be performed in either an event-based or continuous fashion. Continuous simulation requires, among other things, the use of a time series of rainfall amounts. However, for urb...

  15. Auto-focused panoramic dental tomosynthesis imaging with exponential polynomial based sharpness indicators

    NASA Astrophysics Data System (ADS)

    Lee, Taewon; Lee, Yeon Ju; Cho, Seungryong

    2017-02-01

    In this paper, we develop an improved auto-focusing capability of a panoramic dental tomosynthesis imager. We propose an auto-focusing algorithm with an efficient sharpness indicator based on exponential polynomials which provides better quantitation of steep gradients than the conventional one based on algebraic polynomials. With its accurate estimation of the sharpness of the reconstructed slices, the proposed method resulted in a better performance of automatically extracting in-focus slices in the dental panoramic tomosynthesis.

  16. ART and SIRT correction factors in geotomography

    NASA Astrophysics Data System (ADS)

    Balanis, C. A.; Hill, H. W.; Freeland, K. A.

    1983-04-01

    The ART and SIRT image reconstruction techniques are introduced and a correction factor which provides high resolution images is presented. The techniques were tested using synthetic measurements. In order to examine the manner in which each reconstruction progresses, the Euclidean distance for the reconstructions were plotted, versus iteration number. Results indicate that ART produces better reconstructed profiles than the SIRT (using identical correction factors).

  17. 76 FR 3837 - Nuclear Decommissioning Funds; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-21

    ... Internal Revenue Service 26 CFR Part 1 RIN 1545-BF08 Nuclear Decommissioning Funds; Correction AGENCY... decommissioning nuclear power plants. DATES: This correction is effective on January 21, 2011, and is applicable... interest in a nuclear power plant. * * * * * (e) * * * (3) * * * Example 2. * * * Pursuant to paragraph...

  18. Management by Objectives: A Corrections Perspective.

    ERIC Educational Resources Information Center

    McConkie, Mark L.

    The handbook was designed as a guide to help correctional personnel obtain better results in their work by applying the principles of Management by Objectives (MBO). It describes methods of development and processes of implementation of MBO in the correctional setting. The first chapter defines management by objectives and illustrates that it can…

  19. Closed orbit correction in the SSC

    SciTech Connect

    Bourianoff, G.; Cole, B.; Ferede, H.; Pilat, F.

    1991-05-01

    A global correction scheme proposed for use in the SSC is described. Various features of the SSC lattice that impact the ability to correct the orbit are discussed. Typical results for the residual RMS closed orbit in the arc is calculated to be 0.65mm with peak values of 3mm. 3 refs., 1 fig., 2 tabs.

  20. Description of new vacuum chamber correction concept

    SciTech Connect

    Danby, G.T.; Jackson, J.W.

    1989-01-01

    For rapid cycled accelerators eddy currents induced in vacuum chambers (VC) are typically the dominant source of systematic and random field aberrations. Complex thin wall VC are expensive and delicate where bakeout is required, as in the AGS Booster under construction. Thick wall VC are rugged and economical but produce large eddy currents. A ''Self-Correction'' concept has been developed and tested which corrects automatically by transformer action, even for variable /dot B/ cycles. Coils attached to the outside of the VC cancel eddy current aberrations over the entire ''good field'' aperture. The (inexpensive) correction coils follow the local contour of the VC, so large transverse VC movements are tolerated; both the aberrations and their corrections have the same displaced coordinates. Experimental results are presented for Booster correction coil designs demonstrating both self-correction and excitation by a separate power supply. Analytic results applicable to the Booster and other fast cycling accelerators are discussed. The eddy current field aberrations induced in a pre-production full size vacuum chamber inserted in an AGS Booster dipole have been successfully eliminated by the ''self correction'' coils attached to its surface. The voltage induced in a two-turns per pole ''back leg'' winding is sufficient to supply the necessary current through the correction winding. A nichrome wire attached in series provides adjustable resistance for current control. 2 refs., 7 figs.

  1. Electroweak Corrections at the LHC with MCFM

    SciTech Connect

    Campbell, John M.; Wackeroth, Doreen; Zhou, Jia

    2015-07-10

    Electroweak (EW) corrections at the LHC can be enhanced at high energies due to soft/collinear radiation of W and Z bosons, being dominated by Sudakov-like corrections in the form of $\\alpha_W^l\\log^n(Q^2/M_W^2)$ $(n \\le 2l, \\alpha_W = \\alpha/(4\\pi\\sin\\theta_W^2))$ when the energy scale $Q$ enters the TeV regime. Thus, the inclusion of EW corrections in LHC predictions is important for the search of possible signals of new physics in tails of kinematic distributions. EW corrections should also be taken into account in virtue of their comparable size ($\\mathcal{O}(\\alpha)$) to that of higher order QCD corrections ($\\mathcal{O}(\\alpha_s^2)$). We calculated the next-to-leading-order (NLO) weak corrections to the neutral-current (NC) Drell-Yan process, top-quark pair production and di-jet producion, and implemented them in the Monte-Carlo program MCFM. This enables a combined study with the corresponding NLO QCD corrections. We provide both the full NLO weak corrections and their weak Sudakov approximation valid at high energies. The latter is often used for a fast evaluation of weak effects, and having the exact result available as well allows to quantify the validity of the Sudakov approximation.

  2. 76 FR 32866 - Cable Landing Licenses; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-07

    ... COMMISSION 47 CFR Part 1 Cable Landing Licenses; Correction AGENCY: Federal Communications Commission. ACTION... streamlined processing of cable landing license applications. Need for Correction As published, the final... 2. Section 1.767 is amended by revising paragraph (j) to read as follows: Sec. 1.767 Cable landing...

  3. Corrective Action Planning for Environmental Compliance Deficiencies

    SciTech Connect

    Sigmon, C. F.; Ashburn, S. A.; Jolley, R. L.; Smith, A. A.; Mercer, A. E.; Oeulette, B.; Renz, K.; Scott, S.

    1995-01-01

    Effective corrective action planning is one of the cornerstones of an effective environmental management program. Alternatively, ineffective planning can highlight an installation`s unwillingness or inability to effectively address environmental compliance deficiencies. The following paper discusses several guidelines to consider in corrective action planning to ensure that plans benefit rather than harm an installation`s overall environmental management program.

  4. Teacher Cognition in Corrective Feedback in Japan

    ERIC Educational Resources Information Center

    Mori, Reiko

    2011-01-01

    Based on qualitative data, the current study explored how the knowledge and beliefs of two EFL professionals shaped their corrective feedback practices. The two teachers teaching in Japan had in common two main agendas that they kept in mind as they provided or opted not to provide corrective feedback. They aimed to teach the language and to…

  5. 40 CFR 68.195 - Required corrections.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 15 2011-07-01 2011-07-01 false Required corrections. 68.195 Section 68.195 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CHEMICAL ACCIDENT PREVENTION PROVISIONS Risk Management Plan § 68.195 Required corrections. The owner or...

  6. 40 CFR 68.195 - Required corrections.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Required corrections. 68.195 Section 68.195 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CHEMICAL ACCIDENT PREVENTION PROVISIONS Risk Management Plan § 68.195 Required corrections. The owner or...

  7. 77 FR 54573 - Agency Information Collection; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-05

    ... Doc No: 2012-21802] DEPARTMENT OF ENERGY Agency Information Collection; Correction AGENCY: U.S... information request to the OMB for the Foreign Travel Management System (FTMS). This document corrects an error in that notice. FOR FURTHER INFORMATION CONTACT: Requests for additional information or copies of...

  8. 16 CFR 1209.37 - Corrective actions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... SAFETY STANDARD FOR CELLULOSE INSULATION Certification § 1209.37 Corrective actions. (a) Test failure... insulation product itself. Corrective action may consist of equipment adjustment, equipment repair, equipment... change in the product specification and a new cellulose insulation product (see § 1209.34(b)), the...

  9. The Organization of Delayed Second Language Correction

    ERIC Educational Resources Information Center

    Rolin-Ianziti, Jeanne

    2010-01-01

    The present study uses a conversation analytic framework to examine the organization of a type of classroom talk: the delayed correction sequence. Such talk occurs when teacher and students interactively correct errors after the students have completed a communicative activity. This study investigates naturally occurring instances of correction…

  10. Boomwhackers and End-Pipe Corrections

    ERIC Educational Resources Information Center

    Ruiz, Michael J.

    2014-01-01

    End-pipe corrections seldom come to mind as a suitable topic for an introductory physics lab. Yet, the end-pipe correction formula can be verified in an engaging and inexpensive lab that requires only two supplies: plastic-tube toys called boomwhackers and a meter-stick. This article describes a lab activity in which students model data from…

  11. Error-correcting codes in computer arithmetic.

    NASA Technical Reports Server (NTRS)

    Massey, J. L.; Garcia, O. N.

    1972-01-01

    Summary of the most important results so far obtained in the theory of coding for the correction and detection of errors in computer arithmetic. Attempts to satisfy the stringent reliability demands upon the arithmetic unit are considered, and special attention is given to attempts to incorporate redundancy into the numbers themselves which are being processed so that erroneous results can be detected and corrected.

  12. 40 CFR 1065.672 - Drift correction.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Drift correction. 1065.672 Section 1065.672 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES Calculations and Data Requirements § 1065.672 Drift correction. (a) Scope...

  13. Effective Use of Correctives in Mastery Learning

    ERIC Educational Resources Information Center

    DeWeese, Sean V.; Randolph, Justus J.

    2011-01-01

    Mastery learning is a formative assessment strategy that involves the use of specific interventions, called correctives, to address the specific comprehension needs of the learner. Effective correctives are crucial for the effectiveness of mastery learning, so it is important that teachers make good decisions about what activities and strategies…

  14. 40 CFR 35.3170 - Corrective action.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 1 2013-07-01 2013-07-01 false Corrective action. 35.3170 Section 35.3170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER FEDERAL ASSISTANCE STATE AND LOCAL ASSISTANCE State Water Pollution Control Revolving Funds § 35.3170 Corrective action. (a...

  15. 40 CFR 35.3170 - Corrective action.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 1 2011-07-01 2011-07-01 false Corrective action. 35.3170 Section 35.3170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER FEDERAL ASSISTANCE STATE AND LOCAL ASSISTANCE State Water Pollution Control Revolving Funds § 35.3170 Corrective action. (a...

  16. 40 CFR 35.3170 - Corrective action.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 1 2012-07-01 2012-07-01 false Corrective action. 35.3170 Section 35.3170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER FEDERAL ASSISTANCE STATE AND LOCAL ASSISTANCE State Water Pollution Control Revolving Funds § 35.3170 Corrective action. (a...

  17. 40 CFR 35.3170 - Corrective action.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Corrective action. 35.3170 Section 35.3170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER FEDERAL ASSISTANCE STATE AND LOCAL ASSISTANCE State Water Pollution Control Revolving Funds § 35.3170 Corrective action. (a...

  18. 40 CFR 35.3170 - Corrective action.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 1 2014-07-01 2014-07-01 false Corrective action. 35.3170 Section 35.3170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER FEDERAL ASSISTANCE STATE AND LOCAL ASSISTANCE State Water Pollution Control Revolving Funds § 35.3170 Corrective action. (a...

  19. Integrated Image Reconstruction and Gradient Nonlinearity Correction

    PubMed Central

    Tao, Shengzhen; Trzasko, Joshua D.; Shu, Yunhong; Huston, John; Bernstein, Matt A.

    2014-01-01

    Purpose To describe a model-based reconstruction strategy for routine magnetic resonance imaging (MRI) that accounts for gradient nonlinearity (GNL) during rather than after transformation to the image domain, and demonstrate that this approach reduces the spatial resolution loss that occurs during strictly image-domain GNL-correction. Methods After reviewing conventional GNL-correction methods, we propose a generic signal model for GNL-affected MRI acquisitions, discuss how it incorporates into contemporary image reconstruction platforms, and describe efficient non-uniform fast Fourier transform (NUFFT)-based computational routines for these. The impact of GNL-correction on spatial resolution by the conventional and proposed approaches is investigated on phantom data acquired at varying offsets from gradient isocenter, as well as on fully-sampled and (retrospectively) undersampled in vivo acquisitions. Results Phantom results demonstrate that resolution loss that occurs during GNL-correction is significantly less for the proposed strategy than for the standard approach at distances >10 cm from isocenter with a 35 cm FOV gradient coil. The in vivo results suggest that the proposed strategy better preserves fine anatomical detail than retrospective GNL-correction while offering comparable geometric correction. Conclusion Accounting for GNL during image reconstruction allows geometric distortion to be corrected with less spatial resolution loss than is typically observed with the conventional image domain correction strategy. PMID:25298258

  20. 77 FR 23159 - Locomotive Safety Standards; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF TRANSPORTATION Federal Railroad Administration 49 CFR Parts 229 and 238 RIN 2130-AC16 Locomotive Safety Standards; Correction AGENCY: Federal Railroad Administration (FRA), DOT. ACTION: Final rule; correction. SUMMARY:...

  1. 77 FR 19095 - Privacy Act; Implementation; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-30

    ... of the Secretary 32 CFR Part 322 Privacy Act; Implementation; Correction AGENCY: Office of the Secretary, DoD. ACTION: Direct final rule with request for comments; correction. SUMMARY: On March 16, 2012... paragraphs (l)(2) through (l)(5) in Sec. 322.7 should have read paragraphs (l)(1) through (l)(4)....

  2. 76 FR 48874 - Notice of Meetings; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HEALTH AND HUMAN SERVICES Substance Abuse and Mental Health Services Administration Notice of Meetings; Correction... contained an incorrect date. FOR FURTHER INFORMATION CONTACT: Cynthia A. Graham, 240-276-1692. Correction...

  3. A Hybrid Approach for Correcting Grammatical Errors

    ERIC Educational Resources Information Center

    Lee, Kiyoung; Kwon, Oh-Woog; Kim, Young-Kil; Lee, Yunkeun

    2015-01-01

    This paper presents a hybrid approach for correcting grammatical errors in the sentences uttered by Korean learners of English. The error correction system plays an important role in GenieTutor, which is a dialogue-based English learning system designed to teach English to Korean students. During the talk with GenieTutor, grammatical error…

  4. 76 FR 53080 - Air Cargo Screening; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-25

    ...-6, 1549-1] RIN 1652-AA64 Air Cargo Screening; Correction AGENCY: Transportation Security... Administration (TSA) is correcting the Air Cargo Screening final rule published in the Federal Register on August 18, 2011. The final rule amended two provisions of the Air Cargo Screening interim final rule...

  5. 75 FR 81456 - Hybrid Retirement Plans; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-28

    ... Internal Revenue Service 26 CFR Part 1 RIN 1545-BG36 Hybrid Retirement Plans; Correction AGENCY: Internal... plans. DATES: This correcting amendment is effective on December 28, 2010, and is applicable on October... Reduction in rate of benefit accrual under a defined benefit plan. * * * * * (b) * * * (1) * * *...

  6. Subjects and Objects in Modern Corrections.

    ERIC Educational Resources Information Center

    Duguid, Stephen

    2000-01-01

    Argues that the medical model and the current cognitive model in corrections are based on a subject-object relationship between keepers and prisoners. Suggests approaches to correctional rehabilitation that facilitate transformations in prisoners' lives by relating to them as subjects rather than as objects. (JOW)

  7. Correcting Poor Posture without Awareness or Willpower

    ERIC Educational Resources Information Center

    Wernik, Uri

    2012-01-01

    In this article, a new technique for correcting poor posture is presented. Rather than intentionally increasing awareness or mobilizing willpower to correct posture, this approach offers a game using randomly drawn cards with easy daily assignments. A case using the technique is presented to emphasize the subjective experience of living with poor…

  8. Optical advantages of astigmatic aberration corrected heliostats

    NASA Astrophysics Data System (ADS)

    van Rooyen, De Wet; Schöttl, Peter; Bern, Gregor; Heimsath, Anna; Nitz, Peter

    2016-05-01

    Astigmatic aberration corrected heliostats adapt their shape in dependence of the incidence angle of the sun on the heliostat. Simulations show that this optical correction leads to a higher concentration ratio at the target and thus in a decrease in required receiver aperture in particular for smaller heliostat fields.

  9. Boomwhackers and End-Pipe Corrections

    ERIC Educational Resources Information Center

    Ruiz, Michael J.

    2014-01-01

    End-pipe corrections seldom come to mind as a suitable topic for an introductory physics lab. Yet, the end-pipe correction formula can be verified in an engaging and inexpensive lab that requires only two supplies: plastic-tube toys called boomwhackers and a meter-stick. This article describes a lab activity in which students model data from…

  10. [The political correctness and the medical thinking].

    PubMed

    Krízek, G O

    2008-01-01

    The "Political correctness" is a rather new--about 25 years old--and poorly defined phenomenon. It is being used in an attempt to improve and to "euphemize" the present language and the terminology in various areas. The author tries to show the impact of Political correctness upon the medical diagnostic skills and its possible disadvantages.

  11. Detector signal correction method and system

    DOEpatents

    Carangelo, Robert M.; Duran, Andrew J.; Kudman, Irwin

    1995-07-11

    Corrective factors are applied so as to remove anomalous features from the signal generated by a photoconductive detector, and to thereby render the output signal highly linear with respect to the energy of incident, time-varying radiation. The corrective factors may be applied through the use of either digital electronic data processing means or analog circuitry, or through a combination of those effects.

  12. 78 FR 3325 - Partners Distributive Share; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-16

    ... partnerships and their partners. DATES: This correction is effective on January 16, 2013 and is applicable on... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE TREASURY Internal Revenue Service 26 CFR Part 1 RIN 1545-BJ37 Partners Distributive Share; Correction...

  13. The Organization of Correctional Education Services

    ERIC Educational Resources Information Center

    Gehring, Thom

    2007-01-01

    There have been five major types of correctional education organizations over the centuries: Sabbath school, traditional or decentralized, bureau, correctional school district (CSD), and integral education. The middle three are modern organizational patterns that can be implemented throughout a system: Decentralized, bureau, and CSD. The…

  14. Media Coverage of the "Political Correctness" Debate.

    ERIC Educational Resources Information Center

    Whitney, D. Charles; Wartella, Ellen

    1992-01-01

    Points out that (1) there is no reason to believe that media coverage of the "political correctness" issue is firmly anchored in social reality; (2) the news media's approach reflects and reinforces a longer-term shift in the ways journalists cover the university; and (3) if coverage of political correctness has been misinformed and…

  15. Beyond Political Correctness: Toward the Inclusive University.

    ERIC Educational Resources Information Center

    Richer, Stephen, Ed.; Weir, Lorna, Ed.

    This collection of 12 essays examines the history of the discourse over political correctness (PC) in Canadian academia, focusing on the neoconservative backlash to affirmative action, inclusive policies, and feminist and anti-racist teaching in the classroom. It includes: (1) "Introduction: Political Correctness and the Inclusive…

  16. 78 FR 1143 - Explosive Siting Requirements; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-08

    ... Federal Aviation Administration 14 CFR Part 420 RIN 2120-AJ73 Explosive Siting Requirements; Correction... regulations to the requirements for siting explosives under a license to operate a launch site. The rule... liquids and explosives. The FAA inadvertently did not correctly identify the Department of...

  17. Yearbook of Correctional Education, 1998-1999.

    ERIC Educational Resources Information Center

    Karcz, Stan A., Ed.; Wilderson, Frank B., Jr., Ed.

    This document contains five monographs on correctional education in the United States and internationally. "Towards a Renaissance of Prison Education: International Preconference Symposium" (Carolyn Eggleston, Alice Tracy) reports on a joint symposium of the Correctional Education Association and the European Prison Education Association…

  18. On corrections to the Nambu action

    NASA Technical Reports Server (NTRS)

    Silveira, Vanda; Maia, M. D.

    1994-01-01

    We analyze the thickness-corrections to the Nambu walls, focussing on recent discussions on the subject. The presence of corrections depending on the Gaussian curvature and its implications are reviewed. We also highlight the consistency of the calculations, its limitations and the connection between alternative derivations.

  19. Fuel cell flooding detection and correction

    DOEpatents

    DiPierno Bosco, Andrew; Fronk, Matthew Howard

    2000-08-15

    Method and apparatus for monitoring an H.sub.2 -O.sub.2 PEM fuel cells to detect and correct flooding. The pressure drop across a given H.sub.2 or O.sub.2 flow field is monitored and compared to predetermined thresholds of unacceptability. If the pressure drop exists a threshold of unacceptability corrective measures are automatically initiated.

  20. Correcting Poor Posture without Awareness or Willpower

    ERIC Educational Resources Information Center

    Wernik, Uri

    2012-01-01

    In this article, a new technique for correcting poor posture is presented. Rather than intentionally increasing awareness or mobilizing willpower to correct posture, this approach offers a game using randomly drawn cards with easy daily assignments. A case using the technique is presented to emphasize the subjective experience of living with poor…

  1. 42 CFR 460.194 - Corrective action.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Corrective action. 460.194 Section 460.194 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...) Federal/State Monitoring § 460.194 Corrective action. (a) A PACE organization must take action to...

  2. 19 CFR 145.25 - Entry correct.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... director believes the duty originally assessed was correct, he shall send the addressee a notice in writing... 19 Customs Duties 2 2010-04-01 2010-04-01 false Entry correct. 145.25 Section 145.25 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE...

  3. Marshaling Citizen Power to Modernize Corrections.

    ERIC Educational Resources Information Center

    Chamber of Commerce of the United States, Washington, DC.

    The pamphlet is the most recent in a series of National Chamber of Commerce publications designed to stimulate business and other citizen action to improve corrections as one of the three components of the criminal justice system. The Chamber observes that correctional reform is taking place at various governmental levels but that these efforts…

  4. The Public Looks at Crime and Corrections.

    ERIC Educational Resources Information Center

    Harris (Louis) and Associates, Inc., New York, NY.

    Nearly 1,000 adults and 200 teenagers in a representative sample of 100 geographical locations were interviewed regarding: (1) general attitudes toward corrections, (2) feelings about contacts with convicted offenders on their return to the community, and (3) opinions about corrections as a career. Some findings were: (1) Whites and Negroes agreed…

  5. An alternative method for correcting fluorescence quenching

    NASA Astrophysics Data System (ADS)

    Biermann, L.; Guinet, C.; Bester, M.; Brierley, A.; Boehme, L.

    2015-01-01

    Under high light intensity, phytoplankton protect their photosystems from bleaching through non-photochemical quenching processes. The consequence of this is suppression of fluorescence emission, which must be corrected when measuring in situ yield with fluorometers. We present data from the Southern Ocean, collected over five austral summers by 19 southern elephant seals tagged with fluorometers. Conventionally, fluorescence data collected during the day (quenched) were corrected using the limit of the mixed layer, assuming that phytoplankton are uniformly mixed from the surface to this depth. However, distinct deep fluorescence maxima were measured in approximately 30% of the night (unquenched) data. To account for the evidence that chlorophyll is not uniformly mixed in the upper layer, we propose correcting from the limit of the euphotic zone, defined as the depth at which photosynthetically available radiation is ~ 1% of the surface value. Mixed layer depth exceeded euphotic depth over 80% of the time. Under these conditions, quenching was corrected from the depth of the remotely derived euphotic zone Zeu, and compared with fluorescence corrected from the depth of the density-derived mixed layer. Deep fluorescence maxima were evident in only 10% of the day data when correcting from mixed layer depth. This was doubled to 21% when correcting from Zeu, more closely matching the unquenched (night) data. Furthermore, correcting from Zeu served to conserve non-uniform chlorophyll features found between the 1% light level and mixed layer depth.

  6. Optical implementation of a unitarily correctable code

    NASA Astrophysics Data System (ADS)

    Schreiter, K. M.; Pasieka, A.; Kaltenbaek, R.; Resch, K. J.; Kribs, D. W.

    2009-08-01

    Noise poses a challenge for any real-world implementation in quantum information science. The theory of quantum error correction deals with this problem via methods to encode and recover quantum information in a way that is resilient against that noise. Unitarily correctable codes are an error correction technique wherein a single unitary recovery operation is applied without the need for an ancilla Hilbert space. Here, we present an optical implementation of a nontrivial unitarily correctable code for a noisy quantum channel with no decoherence-free subspaces or noiseless subsystems. We show that recovery of our initial states is achieved with high fidelity (≥0.97) , quantitatively proving the efficacy of this unitarily correctable code.

  7. VLBI2010 Imaging and Structure Corrections

    NASA Technical Reports Server (NTRS)

    Collioud, Arnaud; Charlot, Patrick

    2010-01-01

    Simulations show that the next generation VLBI system is generally well suited for imaging extragalactic radio sources. In addition to revealing the morphology of the sources, simulated VLBI2010 images may also be used to generate structure correction maps, which characterize the impact of source structure on the VLBI measurements. By comparing structure corrections for a set of simulated images based on Monte-Carlo generated visibilities with theoretical structure corrections derived from the model, we assess the accuracy of VLBI2010 structure corrections. In the most favorable case (32-station network, source at declination +40 deg.), statistics demonstrate that the structure corrections obtained from simulated images are statistically close to the theoretical model ones, which seems very promising for the VLBI2010 system.

  8. 49 CFR 10.41 - Requests for correction of records.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 1 2011-10-01 2011-10-01 false Requests for correction of records. 10.41 Section... PERTAINING TO INDIVIDUALS Correction of Records § 10.41 Requests for correction of records. Any person who... correction and the reasons the record should be so corrected. Requests for correction of records shall...

  9. 49 CFR 10.41 - Requests for correction of records.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Requests for correction of records. 10.41 Section... PERTAINING TO INDIVIDUALS Correction of Records § 10.41 Requests for correction of records. Any person who... correction and the reasons the record should be so corrected. Requests for correction of records shall...

  10. Corrective Action Plan for Corrective Action Unit 424: Area 3 Landfill Complex, Tonopah Test Range, Nevada

    SciTech Connect

    Bechtel Nevada

    1998-08-31

    This corrective action plan provides the closure implementation methods for the Area 3 Landfill Complex, Corrective Action Unit (CAU) 424, located at the Tonopah Test Range. The Area 3 Landfill Complex consists of 8 landfill sites, each designated as a separate corrective action site.

  11. 26 CFR 53.4961-1 - Abatement of second tier taxes for correction within correction period.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 17 2011-04-01 2011-04-01 false Abatement of second tier taxes for correction within correction period. 53.4961-1 Section 53.4961-1 Internal Revenue INTERNAL REVENUE SERVICE... TAXES Second Tier Excise Taxes § 53.4961-1 Abatement of second tier taxes for correction...

  12. Corrections Officer Physical Abilities Report. Standards and Training for Corrections Program.

    ERIC Educational Resources Information Center

    California State Board of Corrections, Sacramento.

    A study examined the physical ability requirements for entry-level corrections officers in the California. The study, which was undertaken at the request of the California Board of Corrections, had the following objectives: statewide job analysis of the requirements of three entry-level positions in county agencies--corrections officer, probation…

  13. Sextupole correction coils for SSC model dipoles

    SciTech Connect

    Rechen, J.B.; Gilbert, W.S.; Hassenzahl, W.V.

    1985-05-01

    Local correction of the sextupole error field is proposed for the dipoles of the SSC. This requirement is imposed on the design by the high field quality required both during injection at low fields and during colliding beam operation at high fields. Error fields in the main dipole windings due to superconductor magnetization and conductor misplacements and unwanted sextupole and decapole magnetic field terms. To correct the sextupole error field we have constructed sextupole coils made of a single layer of superconducting wire and have mounted them with high precision on the stainless steel bore tube. These correction coils have been operated with 1 meter long SSC model dipoles in both the self-powered and externally-powered modes. The sextupole field in the bore has been reduced by as much as a factor of 50. The level of correction depends strongly on the angular alignment of the correction coil with respect to the sextupole error field it is to correct. Results of tests, performance of the correction coils and alignment requirements for the system are presented.

  14. Nonperturbative QCD corrections to electroweak observables

    SciTech Connect

    Dru B Renner, Xu Feng, Karl Jansen, Marcus Petschlies

    2011-12-01

    Nonperturbative QCD corrections are important to many low-energy electroweak observables, for example the muon magnetic moment. However, hadronic corrections also play a significant role at much higher energies due to their impact on the running of standard model parameters, such as the electromagnetic coupling. Currently, these hadronic contributions are accounted for by a combination of experimental measurements and phenomenological modeling but ideally should be calculated from first principles. Recent developments indicate that many of the most important hadronic corrections may be feasibly calculated using lattice QCD methods. To illustrate this, we will examine the lattice computation of the leading-order QCD corrections to the muon magnetic moment, paying particular attention to a recently developed method but also reviewing the results from other calculations. We will then continue with several examples that demonstrate the potential impact of the new approach: the leading-order corrections to the electron and tau magnetic moments, the running of the electromagnetic coupling, and a class of the next-to-leading-order corrections for the muon magnetic moment. Along the way, we will mention applications to the Adler function, the determination of the strong coupling constant and QCD corrections to muonic-hydrogen.

  15. Karyometry: correction algorithm for differences in staining.

    PubMed

    Bartels, Peter H; Bartels, Hubert G; Alberts, David S

    2009-04-01

    To describe an algorithm that allows the correction of differences in staining of histopathologic sections while preserving chromatin texture. In order to preserve the texture of the nuclear chromatin in the corrected digital imagery, it is necessary to correct the images pixel for pixel. This is accomplished by mapping each pixel's value onto the cumulative frequency distribution of the data set to which the image belongs, to transfer to the cumulative frequency distribution of the data set serving as standard and to project the intersection down onto the pixel optical density scale for the corrected value. Feature values in the corrected imagery, for the majority of features used in karyometry, are between < 1% and a few percent of the feature values in standard imagery. For some higher-order statistical features involving multiple pixels, sensitivity to a shift in the cumulative frequency distribution may exist, and a secondary small correction by a factor may be required. The correction algorithm allows the elimination of the effects of small staining differences on karyometric analysis.

  16. Aperture correction for a sphere interferometer

    NASA Astrophysics Data System (ADS)

    Arnold Nicolaus, R.; Bönsch, Gerhard

    2009-12-01

    Considerations have been made to derive a correction for the diameter measurements of a sphere by means of a special sphere interferometer. This correction is caused by the finite diameter of the light source acting as the entrance 'pinhole' aperture in the light collimating system. The finite diameter has the effect that the wave which is incident on the sphere is a superposition of spherical waves which are slightly inclined with respect to each other. The resulting correction is essential for high accuracy dimensional measurements of silicon spheres to determine the Avogadro constant—a new determination of which is a contribution to a new definition of the kilogram.

  17. Perimeter security for Minnesota correctional facilities

    SciTech Connect

    Crist, D.; Spencer, D.D.

    1996-12-31

    For the past few years, the Minnesota Department of Corrections, assisted by Sandia National Laboratories, has developed a set of standards for perimeter security at medium, close, and maximum custody correctional facilities in the state. During this process, the threat to perimeter security was examined and concepts about correctional perimeter security were developed. This presentation and paper will review the outcomes of this effort, some of the lessons learned, and the concepts developed during this process and in the course of working with architects, engineers and construction firms as the state upgraded perimeter security at some facilities and planned new construction at other facilities.

  18. Generalized holonomy in String-corrected Spacetimes

    NASA Astrophysics Data System (ADS)

    Stelle, K. S.

    2006-03-01

    The quartic-curvature corrections derived from string theory have a specific impact on the geometry of target-space manifolds of special holonomy. In the cases of Calabi-Yau manifolds, D = 7 manifolds of G2 holonomy and D = 8 manifolds of Spin7 holonomy, string theory α' corrections conspire to preserve the unbroken supersymmetry of these backgrounds despite the fact that the α' corrections cause the Riemannian holonomy to lose its special character. We show how this supersymmetry preservation is expressed in the language of generalized holonomy for the Killing spinor operator.

  19. Ionospheric propagation correction modeling for satellite altimeters

    NASA Technical Reports Server (NTRS)

    Nesterczuk, G.

    1981-01-01

    The theoretical basis and avaliable accuracy verifications were reviewed and compared for ionospheric correction procedures based on a global ionsopheric model driven by solar flux, and a technique in which measured electron content (using Faraday rotation measurements) for one path is mapped into corrections for a hemisphere. For these two techniques, RMS errors for correcting satellite altimeters data (at 14 GHz) are estimated to be 12 cm and 3 cm, respectively. On the basis of global accuracy and reliability after implementation, the solar flux model is recommended.

  20. Dead-time Corrected Disdrometer Data

    DOE Data Explorer

    Bartholomew, Mary Jane

    2008-03-05

    Original and dead-time corrected disdrometer results for observations made at SGP and TWP. The correction is based on the technique discussed in Sheppard and Joe, 1994. In addition, these files contain calculated radar reflectivity factor, mean Doppler velocity and attenuation for every measurement for both the original and dead-time corrected data at the following wavelengths: 0.316, 0.856, 3.2, 5, and 10cm (W,K,X,C,S bands). Pavlos Kollias provided the code to do these calculations.

  1. Corrections: Perspectives on Research, Policy and Impact

    DTIC Science & Technology

    1975-02-01

    m^^mm* ■fn.m*tr"<ii..<ji>.>T.u Ri^yiBj M pw.mi, y CORRECTIONS IMPACT AD-A013 172 PERSPECTIVES ON RESEARCH , POLICY AND James W. Newton...Unclassified lh cifOul’ N/A 1 HtRORT TlTlf Corrections: Perspectives on Research , Policy , and Impact 4 Dt »C »IP 1 I vt...stand today? This year’s theme—"Corrections: Perspectives on Research , Policy , and Impact"—suggests that we consider some determinants of research

  2. Boomwhackers and End-Pipe Corrections

    NASA Astrophysics Data System (ADS)

    Ruiz, Michael J.

    2014-02-01

    End-pipe corrections seldom come to mind as a suitable topic for an introductory physics lab. Yet, the end-pipe correction formula can be verified in an engaging and inexpensive lab that requires only two supplies: plastic-tube toys called boomwhackers and a meterstick. This article describes a lab activity in which students model data from plastic tubes to arrive at the end-correction formula for an open pipe. Students also learn the basic mathematics behind the musical scale, and come to appreciate the importance of end-pipe physics in the engineering design of toy musical tubes.

  3. Molecfit: A Package for Telluric Absorption Correction

    NASA Astrophysics Data System (ADS)

    Kausch, W.; Noll, S.; Smette, A.; Kimeswenger, S.; Horst, H.; Sana, H.; Jones, A. M.; Barden, M.; Szyszka, C.; Vinther, J.

    2014-05-01

    Correcting for the sky signature usually requires supplementary data which are very expensive in terms of telescope time. In addition, the scheduling flexibility is restricted as these data have to be taken usually directly before/after the science observations due to the high variability of the telluric absorption which depends on the state and the chemical composition of the atmosphere at the time of observations. Therefore, a tool for sky correction, which does not require this supplementary calibration data, saves a significant amount of valuable telescope time and increases its efficiency. We developed a software package aimed at performing telluric feature corrections on the basis of synthetic absorption spectra.

  4. Diffractively corrected counter-rotating Risley prisms.

    PubMed

    Nie, Xin; Yang, Hongfang; Xue, Changxi

    2015-12-10

    Using the vector refraction equation and the vector diffraction equation, we obtain the expressions of the direction cosines of the refractive rays for the two wedge prisms, and the direction cosines of the diffractive rays for two wedge grisms, in which diffractive gratings were etched into the prism faces to correct the chromatic aberrations. A mathematical model between the two vector equations is proposed to compare the difference angle chromatic aberrations when the Risley prisms/grisms are rotating at different angles. We conclude that the use of diffractively corrected prisms offers a new method to correct chromatic aberrations in Risley prisms.

  5. Hologram production and representation for corrected image

    NASA Astrophysics Data System (ADS)

    Jiao, Gui Chao; Zhang, Rui; Su, Xue Mei

    2015-12-01

    In this paper, a CCD sensor device is used to record the distorted homemade grid images which are taken by a wide angle camera. The distorted images are corrected by using methods of position calibration and correction of gray with vc++ 6.0 and opencv software. Holography graphes for the corrected pictures are produced. The clearly reproduced images are obtained where Fresnel algorithm is used in graph processing by reducing the object and reference light from Fresnel diffraction to delete zero-order part of the reproduced images. The investigation is useful in optical information processing and image encryption transmission.

  6. Quadratic electroweak corrections for polarized Moller scattering

    SciTech Connect

    A. Aleksejevs, S. Barkanova, Y. Kolomensky, E. Kuraev, V. Zykunov

    2012-01-01

    The paper discusses the two-loop (NNLO) electroweak radiative corrections to the parity violating electron-electron scattering asymmetry induced by squaring one-loop diagrams. The calculations are relevant for the ultra-precise 11 GeV MOLLER experiment planned at Jefferson Laboratory and experiments at high-energy future electron colliders. The imaginary parts of the amplitudes are taken into consideration consistently in both the infrared-finite and divergent terms. The size of the obtained partial correction is significant, which indicates a need for a complete study of the two-loop electroweak radiative corrections in order to meet the precision goals of future experiments.

  7. [Conceptual basics of paralytic lagophthalmos correction].

    PubMed

    Grusha, Ia O

    2013-01-01

    The article discusses complications of paralytic lagophthalmos, such as exposure keratopathy, keratitis, corneal lysis, as well as other exposure-related problems and abnormalities of eyelid position. Thorough analysis of surgical methods of eyelids malposition correction, besides conservative protective measures for the cornea, has been performed. The primary treatment goal in facial nerve paralysis is the prevention of severe corneal complications. The most effective methods of static correction of paralytic lagophthalmos, once of narrowing of palpebral fissure by means of circular suture, and different techniques of ectropion correction are discussed. Application results on an upper eyelid implant are presented. Indications for suture and permanent tarsorrhaphy in patients with facial paralysis are also observed.

  8. Relativistic corrections to a generalized sum rule

    NASA Astrophysics Data System (ADS)

    Sinky, H.; Leung, P. T.

    2006-09-01

    Relativistic corrections to a previously established generalized sum rule are obtained using the Foldy-Wouthysen transformation. This sum rule derived previously by Wang [Phys. Rev. A 60, 262 (1999)] for a nonrelativistic system contains both the well-known Thomas-Reiche-Kuhn and Bethe sum rules, for which relativistic corrections have been obtained in the literature. Our results for the generalized formula will be applied to recover several results obtained previously in the literature, as well as to another sum rule whose relativistic corrections will be obtained.

  9. Topologically correct reconstruction of tortuous contour forests

    PubMed Central

    Edwards, John; Bajaj, Chandrajit

    2011-01-01

    Motivated by the need for correct and robust 3D models of neuronal processes, we present a method for reconstruction of spatially realistic and topologically correct models from planar cross sections of multiple objects. Previous work in 3D reconstruction from serial contours has focused on reconstructing one object at a time, potentially producing inter-object intersections between slices. We have developed a robust algorithm that removes these intersections using a geometric approach. Our method not only removes intersections but can guarantee a given minimum separation distance between objects. This paper describes the algorithm for geometric adjustment, proves correctness, and presents several results of our high-fidelity modeling. PMID:22003256

  10. Threshold corrections in heterotic flux compactifications

    NASA Astrophysics Data System (ADS)

    Angelantonj, Carlo; Israël, Dan; Sarkis, Matthieu

    2017-08-01

    We compute the one-loop threshold corrections to the gauge and gravitational couplings for a large class of N=2 non-Kähler heterotic compactifications with three-form flux, consisting in principal two-torus bundles over K3 surfaces. We obtain the results as sums of BPS-states contributions, depending on the topological data of the bundle. We analyse also the worldsheet non-perturbative corrections coming from instantons wrapping the torus fiber, that are mapped under S-duality to D-instanton corrections in type I flux compactifications.

  11. Radiative corrections to the polarizability of helium.

    PubMed

    Łach, Grzegorz; Jeziorski, Bogumił; Szalewicz, Krzysztof

    2004-06-11

    The complete alpha(3) QED correction to the helium atom polarizability is computed assuming an infinite nuclear mass and found to be equal to 0.000030666(3) a.u., with the contribution from the electric-field dependence of the Bethe logarithm amounting to 0.000000193(2) a.u. After including the alpha(2) and alpha(3) corrections for the nuclear recoil and the leading part of the alpha(4) QED correction, we find that the molar polarizability of 4He is 0.51725419(9)(4) cm(3)/mol. The first of the two error bounds is dominated by the uncertainty of alpha(4) and higher-order QED corrections and the second reflects the uncertainty of the Avogadro constant.

  12. Radiative Corrections to the Polarizability of Helium

    NASA Astrophysics Data System (ADS)

    Łach, Grzegorz; Jeziorski, Bogumił; Szalewicz, Krzysztof

    2004-06-01

    The complete α3 QED correction to the helium atom polarizability is computed assuming an infinite nuclear mass and found to be equal to 0.000 030 666(3)a.u., with the contribution from the electric-field dependence of the Bethe logarithm amounting to 0.000 000 193(2)a.u. After including the α2 and α3 corrections for the nuclear recoil and the leading part of the α4 QED correction, we find that the molar polarizability of 4He is 0.517 254 19(9)(4) cm3/mol. The first of the two error bounds is dominated by the uncertainty of α4 and higher-order QED corrections and the second reflects the uncertainty of the Avogadro constant.

  13. Foliated Quantum Error-Correcting Codes.

    PubMed

    Bolt, A; Duclos-Cianci, G; Poulin, D; Stace, T M

    2016-08-12

    We show how to construct a large class of quantum error-correcting codes, known as Calderbank-Steane-Shor codes, from highly entangled cluster states. This becomes a primitive in a protocol that foliates a series of such cluster states into a much larger cluster state, implementing foliated quantum error correction. We exemplify this construction with several familiar quantum error-correction codes and propose a generic method for decoding foliated codes. We numerically evaluate the error-correction performance of a family of finite-rate Calderbank-Steane-Shor codes known as turbo codes, finding that they perform well over moderate depth foliations. Foliated codes have applications for quantum repeaters and fault-tolerant measurement-based quantum computation.

  14. Increasing sensing resolution with error correction.

    PubMed

    Arrad, G; Vinkler, Y; Aharonov, D; Retzker, A

    2014-04-18

    The signal to noise ratio of quantum sensing protocols scales with the square root of the coherence time. Thus, increasing this time is a key goal in the field. By utilizing quantum error correction, we present a novel way of prolonging such coherence times beyond the fundamental limits of current techniques. We develop an implementable sensing protocol that incorporates error correction, and discuss the characteristics of these protocols in different noise and measurement scenarios. We examine the use of entangled versue untangled states, and error correction's reach of the Heisenberg limit. The effects of error correction on coherence times are calculated and we show that measurement precision can be enhanced for both one-directional and general noise.

  15. Experimental demonstration of topological error correction.

    PubMed

    Yao, Xing-Can; Wang, Tian-Xiong; Chen, Hao-Ze; Gao, Wei-Bo; Fowler, Austin G; Raussendorf, Robert; Chen, Zeng-Bing; Liu, Nai-Le; Lu, Chao-Yang; Deng, You-Jin; Chen, Yu-Ao; Pan, Jian-Wei

    2012-02-22

    Scalable quantum computing can be achieved only if quantum bits are manipulated in a fault-tolerant fashion. Topological error correction--a method that combines topological quantum computation with quantum error correction--has the highest known tolerable error rate for a local architecture. The technique makes use of cluster states with topological properties and requires only nearest-neighbour interactions. Here we report the experimental demonstration of topological error correction with an eight-photon cluster state. We show that a correlation can be protected against a single error on any quantum bit. Also, when all quantum bits are simultaneously subjected to errors with equal probability, the effective error rate can be significantly reduced. Our work demonstrates the viability of topological error correction for fault-tolerant quantum information processing.

  16. 78 FR 63100 - Unified Registration System; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-23

    ... System; Correction AGENCY: Federal Motor Carrier Safety Administration (FMCSA), DOT. ACTION: Final rule... Registration System. This document makes four minor revisions to the URS final rule to be consistent with the...

  17. Assessing the Security Vulnerabilities of Correctional Facilities

    SciTech Connect

    Morrison, G.S.; Spencer, D.S.

    1998-10-27

    The National Institute of Justice has tasked their Satellite Facility at Sandia National Laboratories and their Southeast Regional Technology Center in Charleston, South Carolina to devise new procedures and tools for helping correctional facilities to assess their security vulnerabilities. Thus, a team is visiting selected correctional facilities and performing vulnerability assessments. A vulnerability assessment helps to identi~ the easiest paths for inmate escape, for introduction of contraband such as drugs or weapons, for unexpected intrusion fi-om outside of the facility, and for the perpetration of violent acts on other inmates and correctional employees, In addition, the vulnerability assessment helps to quantify the security risks for the facility. From these initial assessments will come better procedures for performing vulnerability assessments in general at other correctional facilities, as well as the development of tools to assist with the performance of such vulnerability assessments.

  18. Quantum corrections to inflaton and curvaton dynamics

    SciTech Connect

    Markkanen, Tommi; Tranberg, Anders E-mail: anders.tranberg@nbi.dk

    2012-11-01

    We compute the fully renormalized one-loop effective action for two interacting and self-interacting scalar fields in FRW space-time. We then derive and solve the quantum corrected equations of motion both for fields that dominate the energy density (such as an inflaton) and fields that do not (such as a subdominant curvaton). In particular, we introduce quantum corrected Friedmann equations that determine the evolution of the scale factor. We find that in general, gravitational corrections are negligible for the field dynamics. For the curvaton-type fields this leaves only the effect of the flat-space Coleman-Weinberg-type effective potential, and we find that these can be significant. For the inflaton case, both the corrections to the potential and the Friedmann equations can lead to behaviour very different from the classical evolution. Even to the point that inflation, although present at tree level, can be absent at one-loop order.

  19. 76 FR 76899 - Federal Acquisition Regulation; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-09

    ...; Correction; FAR Case 2011-014; Docket 2011-0014; Sequence 1] RIN 9000-AM11 Federal Acquisition Regulation...-014, Successor Entities to the Netherlands Antilles, in the Federal Register of Wednesday, November 2...

  20. Akterations/corrections to the BRASS Program

    NASA Technical Reports Server (NTRS)

    Brand, S. N.

    1985-01-01

    Corrections applied to statistical programs contained in two subroutines of the Bed Rest Analysis Software System (BRASS) are summarized. Two subroutines independently calculate significant values within the BRASS program.

  1. Topological Correction of Multicomponent Systems Polyhedration

    NASA Astrophysics Data System (ADS)

    Lutsyk, V. I.; Vorob'eva, V. P.

    2016-04-01

    An algorithm (Topological Correction of Lists of Simplexes of Different Dimensions) for polyhedration of quaternary reciprocal systems is presented. It can control all polyhedration stages, accelerates the search of internal diagonals and takes into account their possible competition.

  2. Quantum error correction via less noisy qubits.

    PubMed

    Fujiwara, Yuichiro

    2013-04-26

    Known quantum error correction schemes are typically able to take advantage of only a limited class of classical error-correcting codes. Entanglement-assisted quantum error correction is a partial solution which made it possible to exploit any classical linear codes over the binary or quaternary finite field. However, the known entanglement-assisted scheme requires noiseless qubits that help correct quantum errors on noisy qubits, which can be too severe an assumption. We prove that a more relaxed and realistic assumption is sufficient by presenting encoding and decoding operations assisted by qubits on which quantum errors of one particular kind may occur. As in entanglement assistance, our scheme can import any binary or quaternary linear codes. If the auxiliary qubits are noiseless, our codes become entanglement-assisted codes, and saturate the quantum Singleton bound when the underlying classical codes are maximum distance separable.

  3. 16 CFR 1209.37 - Corrective actions.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... SAFETY STANDARD FOR CELLULOSE INSULATION Certification § 1209.37 Corrective actions. (a) Test failure... change in the product specification and a new cellulose insulation product (see § 1209.34(b)),...

  4. 16 CFR 1209.37 - Corrective actions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... SAFETY STANDARD FOR CELLULOSE INSULATION Certification § 1209.37 Corrective actions. (a) Test failure... change in the product specification and a new cellulose insulation product (see § 1209.34(b)),...

  5. 16 CFR 1209.37 - Corrective actions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... SAFETY STANDARD FOR CELLULOSE INSULATION Certification § 1209.37 Corrective actions. (a) Test failure... change in the product specification and a new cellulose insulation product (see § 1209.34(b)),...

  6. Refractive surgery for the correction of myopia.

    PubMed

    Swinger, C A

    1981-01-01

    Interest in the surgical correction of myopia is increasing. At the present time, two procedures are clinically employed: radial keratotomy and myopic keratomileusis. The two techniques are described, and a detailed clinical comparison is presented.

  7. 77 FR 22804 - Sunshine Act Meeting; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-17

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION Sunshine Act Meeting; Correction AGENCY HOLDING THE MEETING: United States International Trade Commission. Federal Register CITATION OF PREVIOUS ANNOUNCEMENT: 77 FR 22344. ORIGINALLY PUBLISHED TIME...

  8. Revisiting instanton corrections to the Konishi multiplet

    NASA Astrophysics Data System (ADS)

    Alday, Luis F.; Korchemsky, Gregory P.

    2016-12-01

    We revisit the calculation of instanton effects in correlation functions in N=4 SYM involving the Konishi operator and operators of twist two. Previous studies revealed that the scaling dimensions and the OPE coefficients of these operators do not receive instanton corrections in the semiclassical approximation. We go beyond this approximation and demonstrate that, while operators belonging to the same N=4 supermultiplet ought to have the same conformal data, the evaluation of quantum instanton corrections for one operator can be mapped into a semiclassical computation for another operator in the same supermultiplet. This observation allows us to compute explicitly the leading instanton correction to the scaling dimension of operators in the Konishi supermultiplet as well as to their structure constants in the OPE of two half-BPS scalar operators. We then use these results, together with crossing symmetry, to determine instanton corrections to scaling dimensions of twist-four operators with large spin.

  9. Quantum Corrections to the 'Atomistic' MOSFET Simulations

    NASA Technical Reports Server (NTRS)

    Asenov, Asen; Slavcheva, G.; Kaya, S.; Balasubramaniam, R.

    2000-01-01

    We have introduced in a simple and efficient manner quantum mechanical corrections in our 3D 'atomistic' MOSFET simulator using the density gradient formalism. We have studied in comparison with classical simulations the effect of the quantum mechanical corrections on the simulation of random dopant induced threshold voltage fluctuations, the effect of the single charge trapping on interface states and the effect of the oxide thickness fluctuations in decanano MOSFETs with ultrathin gate oxides. The introduction of quantum corrections enhances the threshold voltage fluctuations but does not affect significantly the amplitude of the random telegraph noise associated with single carrier trapping. The importance of the quantum corrections for proper simulation of oxide thickness fluctuation effects has also been demonstrated.

  10. Foliated Quantum Error-Correcting Codes

    NASA Astrophysics Data System (ADS)

    Bolt, A.; Duclos-Cianci, G.; Poulin, D.; Stace, T. M.

    2016-08-01

    We show how to construct a large class of quantum error-correcting codes, known as Calderbank-Steane-Shor codes, from highly entangled cluster states. This becomes a primitive in a protocol that foliates a series of such cluster states into a much larger cluster state, implementing foliated quantum error correction. We exemplify this construction with several familiar quantum error-correction codes and propose a generic method for decoding foliated codes. We numerically evaluate the error-correction performance of a family of finite-rate Calderbank-Steane-Shor codes known as turbo codes, finding that they perform well over moderate depth foliations. Foliated codes have applications for quantum repeaters and fault-tolerant measurement-based quantum computation.

  11. 78 FR 76193 - Special Notice; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-16

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF VETERANS AFFAIRS [OMB Control No. 2900-NEW (Foot (Including Flatfeet (pes planus)) Conditions Disability Benefits Questionnaire)] Special Notice; Correction AGENCY: Veterans Benefits Administration, Department of Veterans...

  12. 9 CFR 416.15 - Corrective Actions.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ....15 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... have failed to prevent direct contamination or adulteration of product(s). (b) Corrective actions... sanitary conditions, and prevent the recurrence of direct contamination or adulteration of...

  13. 9 CFR 416.15 - Corrective Actions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ....15 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... have failed to prevent direct contamination or adulteration of product(s). (b) Corrective actions... sanitary conditions, and prevent the recurrence of direct contamination or adulteration of...

  14. 9 CFR 416.15 - Corrective Actions.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ....15 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... have failed to prevent direct contamination or adulteration of product(s). (b) Corrective actions... sanitary conditions, and prevent the recurrence of direct contamination or adulteration of...

  15. 9 CFR 416.15 - Corrective Actions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ....15 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... have failed to prevent direct contamination or adulteration of product(s). (b) Corrective actions... sanitary conditions, and prevent the recurrence of direct contamination or adulteration of...

  16. 9 CFR 416.15 - Corrective Actions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ....15 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... have failed to prevent direct contamination or adulteration of product(s). (b) Corrective actions... sanitary conditions, and prevent the recurrence of direct contamination or adulteration of...

  17. Technique for correction of lop ear.

    PubMed

    Elsahy, N I

    1990-04-01

    Various techniques of correction of lop ear have been described. Minor lop ear deformity can easily be corrected with simple excision of the overhanging auricular cartilage. Moderate and severe lop ear deformities, on the other hand, are more difficult to correct because there is actual reduction in size of the upper third of the ear in addition to the overhanging auricular cartilage. The purpose of this paper was to present a new technique used to correct the moderate lop ear deformity. In addition to excising the overhanging cartilage, I rotate a cartilage flap from the anthelix upward where the missing superior crus was supposed to be. This flap increases the vertical height of the ear and creates a new superior crus. I applied this technique on three cases of moderate lop ear deformities with good results.

  18. 77 FR 34218 - Clothing Allowance; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-11

    ... construed to impose a restriction that VA did not intend. This document corrects that error. DATES: This... explained in the final-rule notice, however, VA did not intend to impose such a requirement, but intended...

  19. Response to Request for Correction 12002

    EPA Pesticide Factsheets

    Response to Artisan EHS Consulting's Request for Correction 12002 regarding notification requirements for hazardous substances, notifying that the error in question was a typographical error and has been fixed.

  20. Teaching in the Age of "Political Correctness."

    ERIC Educational Resources Information Center

    Giroux, Henry A.

    1995-01-01

    Analyzes the political correctness and anti-PC viewpoints and presents elements of a critical perspective that challenges and poses alternatives. Considers the distinction between political education and politicized education. (SK)

  1. 40 CFR 68.195 - Required corrections.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) CHEMICAL ACCIDENT PREVENTION PROVISIONS Risk Management Plan § 68.195 Required corrections. The owner or... information—Beginning June 21, 2004, within one month of any change in the emergency contact...

  2. Automated zone correction in bitmapped document images

    NASA Astrophysics Data System (ADS)

    Hauser, Susan E.; Le, Daniel X.; Thoma, George R.

    1999-12-01

    The optical character recognition system (OCR) selected by the National Library of Medicine (NLM) as part of its system for automating the production of MEDLINER records frequently segments the scanned page images into zones which are inappropriate for NLM's application. Software has been created in-house to correct the zones using character coordinate and character attribute information provided as part of the OCR output data. The software correctly delineates over 97% of the zones of interest tested to date.

  3. A hybrid numerical method for orbit correction

    SciTech Connect

    White, G.; Himel, T.; Shoaee, H.

    1997-09-01

    The authors describe a simple hybrid numerical method for beam orbit correction in particle accelerators. The method overcomes both degeneracy in the linear system being solved and respects boundaries on the solution. It uses the Singular Value Decomposition (SVD) to find and remove the null-space in the system, followed by a bounded Linear Least Squares analysis of the remaining recast problem. It was developed for correcting orbit and dispersion in the B-factory rings.

  4. Nonfreeze epikeratophakia for the correction of myopia.

    PubMed

    Krumeich, J H; Swinger, C A

    1987-03-15

    We developed a procedure for preparing epikeratophakia tissue lenses for the correction of myopia from unfrozen tissue using a newly developed artificial anterior chamber and the BKS-1000 (Barraquer-Krumeich-Swinger) refractive set. The results of 23 clinical cases involving tissue that was not frozen or lyophilized demonstrate a correlation coefficient of 0.90 in terms of accuracy of correction and good visual acuity results.

  5. Pharmacological correction of misfolding of ABC proteins☆

    PubMed Central

    Rudashevskaya, Elena L.; Stockner, Thomas; Trauner, Michael; Freissmuth, Michael; Chiba, Peter

    2014-01-01

    The endoplasmic reticulum (ER) quality control system distinguishes between correctly and incorrectly folded proteins to prevent processing of aberrantly folded conformations along the secretory pathway. Non-synonymous mutations can lead to misfolding of ABC proteins and associated disease phenotypes. Specific phenotypes may at least partially be corrected by small molecules, so-called pharmacological chaperones. Screening for folding correctors is expected to open an avenue for treatment of diseases such as cystic fibrosis and intrahepatic cholestasis. PMID:25027379

  6. Automatic Error Correction of Java Programs

    NASA Astrophysics Data System (ADS)

    Kern, Christian; Esparza, Javier

    We present a technique for automatically detecting and correcting software bugs. The programmer is required to define a catalog of hotspots, syntactic constructs she considered to be error prone (e.g. i < N), together with suitable alternatives (e.g. i < (N + 1) and i < (N - 1)). Given a faulty program, search techniques are then applied to find a combination of alternatives yielding a correct program. The technique is implemented on top of the Java Pathfinder Framework.

  7. Detector signal correction method and system

    DOEpatents

    Carangelo, R.M.; Duran, A.J.; Kudman, I.

    1995-07-11

    Corrective factors are applied so as to remove anomalous features from the signal generated by a photoconductive detector, and to thereby render the output signal highly linear with respect to the energy of incident, time-varying radiation. The corrective factors may be applied through the use of either digital electronic data processing means or analog circuitry, or through a combination of those effects. 5 figs.

  8. Quantum corrections for a cosmological string solution

    SciTech Connect

    Behrndt, K.

    1994-08-01

    The author investigates quantum corrections for a cosmological solution of the string effective action. Starting point is a classical solution containing an antisymmetric tensor field, a dilaton and a modulus field which has singularities in the scalar fields. As a first step he quantizes the scalar fields near the singularity with the result that the singularities disappear and that in general non-perturbative quantum corrections form a potential in the scalar fields.

  9. Can Dopplergrams be corrected for straylight?

    NASA Astrophysics Data System (ADS)

    Moretti, P. F.

    2000-10-01

    Straylight effects in solar intensity images have been framed in a well-established mathematical formulation (Chae et al., 1998a, b). Many procedures can be applied to recover the point spread function (PSF) and correct the atmospheric and instrumental distortions. Concerning velocity data, some procedures to make corrections for straylight have been addressed. Many experiments infer the velocity as the mean displacement of a spectral line and build a Dopplergram as a nonlinear combination of the intensity images sampled at different wavelengths. Unfortunately, often only the final products are available and it is not possible to apply an appropriate correction to the individual intensity images. A standard procedure to correct for the straylight has been applied to a time-series of velocity data and the results have been controlled in the single Dopplergram (that seems to be good) and in a power spectrum at the atmospheric frequencies (where any correction should reduce the power). These frequencies are characteristic of the observing site and typically in the range of the g modes: this means that no long run from a network would decrease their contribution to the noise. The results show that the correction procedures, based on the intensity and velocity gradients, are not reliable if controlled in the power spectrum. This conclusion has led to a change of the acquisition procedure at the Kanzelhöhe Solar Observatory, where now the individual intensity images that build the Dopplergram are stored.

  10. Drift correction of electronic tongue responses

    NASA Astrophysics Data System (ADS)

    Holmin, Susanne; Krantz-Rülcker, Christina; Lundström, Ingemar; Winquist, Fredrik

    2001-08-01

    In this article, drift correction algorithms were used in order to remove linear drift in multivariate spaces of two data sets obtained by an electronic tongue based on voltammetry. The electronic tongue consisted of various metal electrodes (Au, Ir, Pt, Rh) combined with pattern recognition tools, such as principal component analysis. The first data set contained different types of liquid, from well defined to more complex solutions. The second data set contained different black and green teas. Component correction (CC) was compared to a simple additive correction. In CC, the drift direction of measured reference solutions in a multivariate space was subtracted from other types of solution. In additive correction, responses from reference samples were subtracted from other samples. CC showed similar or better performance in reducing drift compared to additive correction for the two data sets. The additive correction method was dependent on the fact that the differences in between samples of a reference solution were similar to the changes in between samples of other liquids, which was not the case with CC.

  11. MULTIPLE SEGMENTAL OSTEOTOMIES TO THE KYPHOSIS CORRECTION

    PubMed Central

    da Silva Herrero, Carlos Fernando Pereira; Porto, Maximiliano Aguiar; Barbosa, Marcello Henrique Nogueira; Defino, Helton Luiz Aparecido

    2015-01-01

    Objective: To evaluate the results of the surgical treatment of the spinal Kyphosis using the Ponte's technique (multiple posterior osteotomies). Methods: Ten patients (8 with Scheuermann's kyphosis and 2 with kyphosis after laminectomy) submitted to surgical correction of kyphotic deformity greater than 70° were retrospectively assessed. The age at the surgical time ranged from 12 to 20 years old (mean age16.8 years ± 2.89). The radiographic parameters evaluated were the kyphosis, the lordosis and the scoliosis – whenever present. The presence of proximal and distal junctional kyphosis, loss of correction, and complications as implants loosening and breakage were also assessed. The radiographic parameters were evaluated at the preoperative, early postoperative and late postoperative time. Results: The patients were followed through a period that ranged from 24 to 144 months (65.8 ±39.92). The mean value of the kyphosis was 78.8° ± 7.59° (Cobb) before surgery and 47.5° ± 12.54° at late follow up, with mean correction of 33.9° ± 9.53° and lost correction of 2.2°. Conclusion: The surgical treatment of the thoracic kyphosis using multiples posterior osteotomies presented a good correction of the deformity and minimal lost of correction during follow up. PMID:27077062

  12. Optimal feedback correction in string quartet synchronization

    PubMed Central

    Wing, Alan M.; Endo, Satoshi; Bradbury, Adrian; Vorberg, Dirk

    2014-01-01

    Control of relative timing is critical in ensemble music performance. We hypothesize that players respond to and correct asynchronies in tone onsets that arise from fluctuations in their individual tempos. We propose a first-order linear phase correction model and demonstrate that optimal performance that minimizes asynchrony variance predicts a specific value for the correction gain. In two separate case studies, two internationally recognized string quartets repeatedly performed a short excerpt from the fourth movement of Haydn's quartet Op. 74 no. 1, with intentional, but unrehearsed, expressive variations in timing. Time series analysis of successive tone onset asynchronies was used to estimate correction gains for all pairs of players. On average, both quartets exhibited near-optimal gain. However, individual gains revealed contrasting patterns of adjustment between some pairs of players. In one quartet, the first violinist exhibited less adjustment to the others compared with their adjustment to her. In the second quartet, the levels of correction by the first violinist matched those exhibited by the others. These correction patterns may be seen as reflecting contrasting strategies of first-violin-led autocracy versus democracy. The time series approach we propose affords a sensitive method for investigating subtle contrasts in music ensemble synchronization. PMID:24478285

  13. Optimal feedback correction in string quartet synchronization.

    PubMed

    Wing, Alan M; Endo, Satoshi; Bradbury, Adrian; Vorberg, Dirk

    2014-04-06

    Control of relative timing is critical in ensemble music performance. We hypothesize that players respond to and correct asynchronies in tone onsets that arise from fluctuations in their individual tempos. We propose a first-order linear phase correction model and demonstrate that optimal performance that minimizes asynchrony variance predicts a specific value for the correction gain. In two separate case studies, two internationally recognized string quartets repeatedly performed a short excerpt from the fourth movement of Haydn's quartet Op. 74 no. 1, with intentional, but unrehearsed, expressive variations in timing. Time series analysis of successive tone onset asynchronies was used to estimate correction gains for all pairs of players. On average, both quartets exhibited near-optimal gain. However, individual gains revealed contrasting patterns of adjustment between some pairs of players. In one quartet, the first violinist exhibited less adjustment to the others compared with their adjustment to her. In the second quartet, the levels of correction by the first violinist matched those exhibited by the others. These correction patterns may be seen as reflecting contrasting strategies of first-violin-led autocracy versus democracy. The time series approach we propose affords a sensitive method for investigating subtle contrasts in music ensemble synchronization.

  14. Vertical orbital dystopia--surgical correction.

    PubMed

    Edgerton, M T; Jane, J A

    1981-02-01

    The surgical correction of vertical malpositions of the human eye has been made relatively safe and reliable by recent surgical techniques. The authors define this condition as vertical orbital dystopia and review the etiology of this deformity in 38 recent consecutive cases that were surgically treated at the Craniofacial Anomalies Center of The University of Virginia. Some new and useful tests are described that are of value to the plastic surgeon in analysis of the facial deformity and in planning the appropriate surgical procedure to correct the vertical dystopia of one or both eyes. Several cases are illustrated that describe the principal surgical methods of moving the eye up or down without loss of vision. The vertical eye shifts in this series have been in the range of 2 to 3 mm to over 22 mm. No loss of vision was produced by these corrections. The most common difficulties and complications of orbital dystopia corrections are described. The implications of this type of surgery in terms of visual physiology are suggested. The authors conclude that surgical correction of vertical orbital dystopias is possible, safe, and rewarding to the patients. However, they advise that the correction is best performed in young children and by a specially trained team of plastic surgeons, neurosurgeons, and ophthalmologists.

  15. A full-chip DSA correction framework

    NASA Astrophysics Data System (ADS)

    Wang, Wei-Long; Latypov, Azat; Zou, Yi; Coskun, Tamer

    2014-03-01

    The graphoepitaxy DSA process relies on lithographically created confinement wells to perform directed self-assembly in the thin film of the block copolymer. These self-assembled patterns are then etch transferred into the substrate. The conventional DUV immersion or EUV lithography is still required to print these confinement wells, and the lithographic patterning residual errors propagate to the final patterns created by DSA process. DSA proximity correction (PC), in addition to OPC, is essential to obtain accurate confinement well shapes that resolve the final DSA patterns precisely. In this study, we proposed a novel correction flow that integrates our co-optimization algorithms, rigorous 2-D DSA simulation engine, and OPC tool. This flow enables us to optimize our process and integration as well as provides a guidance to design optimization. We also showed that novel RET techniques such as DSA-Aware assist feature generation can be used to improve the process window. The feasibility of our DSA correction framework on large layout with promising correction accuracy has been demonstrated. A robust and efficient correction algorithm is also determined by rigorous verification studies. We also explored how the knowledge of DSA natural pitches and lithography printing constraints provide a good guidance to establish DSA-Friendly designs. Finally application of our DSA full-chip computational correction framework to several real designs of contact-like holes is discussed. We also summarize the challenges associated with computational DSA technology.

  16. Proximity correction for electron beam lithography

    NASA Astrophysics Data System (ADS)

    Marrian, Christie R.; Chang, Steven; Peckerar, Martin C.

    1996-09-01

    As the critical dimensions required in mask making and direct write by electron beam lithography become ever smaller, correction for proximity effects becomes increasingly important. Furthermore, the problem is beset by the fact that only a positive energy dose can be applied with an electron beam. We discuss techniques such as chopping and dose shifting, which have been proposed to meet the positivity requirement. An alternative approach is to treat proximity correction as an optimization problem. Two such methods, local area dose correction and optimization using a regularizer proportional to the informational entropy of the solution, are compared. A notable feature of the regularized proximity correction is the ability to correct for forward scattering by the generation of a 'firewall' set back from the edge of a feature. As the forward scattering width increases, the firewall is set back farther from the feature edge. The regularized optimization algorithm is computationally time consuming using conventional techniques. However, the algorithm lends itself to a microelectronics integrated circuit coprocessor implementation, which could perform the optimization faster than even the fastest work stations. Scaling the circuit to larger number of pixels is best approached with a hybrid serial/parallel digital architecture that would correct for proximity effects over 108 pixels in about 1 h. This time can be reduced by simply adding additional coprocessors.

  17. Proximity correction for e-beam lithography

    NASA Astrophysics Data System (ADS)

    Marrian, Christie R.; Chang, Steven; Peckerar, Martin C.

    1995-12-01

    As the critical dimensions required for masks and e-beam direct write become ever smaller, the correction of proximity effects becomes more necessary. Furthermore, the problem is beset by the fact that only a positive energy dose can be applied with the e-beam. We discuss here approaches such as chopping and dose shifting which have been proposed to meet the positivity requirement. An alternative approach is to treat proximity correction as an optimization problem. Two such methods, local area dose correction and optimization using a regularizer proportional to the informational entropy of the solution, are compared. A notable feature of the regularized proximity correction is the ability to correct for forward scattering by the generation of a 'firewall' set back from the edge of a feature. As the forward scattering width increases, the firewall is set back further from the feature edge. The regularized optimization algorithm is computationally time consuming using conventional techniques. However, the algorithm lends itself to a microelectronics integrated circuit coprocessor implementation which could perform the optimization much faster than even the fastest work stations. Scaling the circuit to larger number of pixels is best approached with a hybrid serial/parallel digital architecture which would correct for proximity effects over 108 pixels about one hour. This time can be reduced by simply adding additional coprocessors.

  18. Corrective Action Decision Document for Corrective Action Unit 342: Area 23 Mercury Fire Training Pit, Nevada Test Site, Nevada

    SciTech Connect

    DOE /NV

    1999-05-26

    This Corrective Action Decision Document has been prepared for the Nevada Test Site's Area 23 Mercury Fire Training Pit (Corrective Action Unit 342) in accordance with the Federal Facility Agreement and Consent Order (FFACO, 1996). Corrective Action Unit 342 is comprised of Corrective Action Site 23-56-01. The purpose of this Corrective Action Decision Document is to identify and provide a rationale for the selection of a recommended corrective action alternative for Corrective Action Unit 342. The scope of this document consists of the following: Develop corrective action objectives; Identify corrective action alternative screening criteria; Develop corrective action alternatives; Perform detailed and comparative evaluations of corrective action alternatives in relation to corrective action objectives and screening criteria; and Recommend and justify a preferred corrective action alternative for the Corrective Action Unit.

  19. Atmospheric Correction for Satellite Ocean Color Radiometry

    NASA Technical Reports Server (NTRS)

    Mobley, Curtis D.; Werdell, Jeremy; Franz, Bryan; Ahmad, Ziauddin; Bailey, Sean

    2016-01-01

    This tutorial is an introduction to atmospheric correction in general and also documentation of the atmospheric correction algorithms currently implemented by the NASA Ocean Biology Processing Group (OBPG) for processing ocean color data from satellite-borne sensors such as MODIS and VIIRS. The intended audience is graduate students or others who are encountering this topic for the first time. The tutorial is in two parts. Part I discusses the generic atmospheric correction problem. The magnitude and nature of the problem are first illustrated with numerical results generated by a coupled ocean-atmosphere radiative transfer model. That code allow the various contributions (Rayleigh and aerosol path radiance, surface reflectance, water-leaving radiance, etc.) to the topof- the-atmosphere (TOA) radiance to be separated out. Particular attention is then paid to the definition, calculation, and interpretation of the so-called "exact normalized water-leaving radiance" and its equivalent reflectance. Part I ends with chapters on the calculation of direct and diffuse atmospheric transmittances, and on how vicarious calibration is performed. Part II then describes one by one the particular algorithms currently used by the OBPG to effect the various steps of the atmospheric correction process, viz. the corrections for absorption and scattering by gases and aerosols, Sun and sky reflectance by the sea surface and whitecaps, and finally corrections for sensor out-of-band response and polarization effects. One goal of the tutorial-guided by teaching needs- is to distill the results of dozens of papers published over several decades of research in atmospheric correction for ocean color remote sensing.

  20. 49 CFR 325.73 - Microphone distance correction factors. 1

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 5 2011-10-01 2011-10-01 false Microphone distance correction factors. 1 325.73... MOTOR CARRIER NOISE EMISSION STANDARDS Correction Factors § 325.73 Microphone distance correction... account both the distance correction factors contained in § 325.73 and the ground surface correction...

  1. 49 CFR 325.73 - Microphone distance correction factors. 1

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Microphone distance correction factors. 1 325.73... MOTOR CARRIER NOISE EMISSION STANDARDS Correction Factors § 325.73 Microphone distance correction... account both the distance correction factors contained in § 325.73 and the ground surface correction...

  2. 48 CFR 1846.672-4 - Correction instructions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 6 2011-10-01 2011-10-01 false Correction instructions... Correction instructions. When, because of errors of omissions, it is necessary to correct the MIRR after... corrections shall be made as follows: (a) Circle the error and place the corrected information in the...

  3. 49 CFR 325.75 - Ground surface correction factors. 1

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 5 2012-10-01 2012-10-01 false Ground surface correction factors. 1 325.75... MOTOR CARRIER NOISE EMISSION STANDARDS Correction Factors § 325.75 Ground surface correction factors. 1... account both the distance correction factors contained in § 325.73 and the ground surface correction...

  4. 49 CFR 325.75 - Ground surface correction factors. 1

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 5 2014-10-01 2014-10-01 false Ground surface correction factors. 1 325.75... MOTOR CARRIER NOISE EMISSION STANDARDS Correction Factors § 325.75 Ground surface correction factors. 1... account both the distance correction factors contained in § 325.73 and the ground surface correction...

  5. CORRECTIVE ACTION PLAN FOR CORRECTIVE ACTION UNIT 528: POLYCHLORINATED BIPHENYLS CONTAMINATION NEVADA TEST SITE, NEVADA

    SciTech Connect

    BECHTEL NEVADA

    2005-06-01

    Corrective Action Unit (CAU) 528: Polychlorinated Biphenyls Contamination is listed in Appendix III of the Federal Facility Agreement and Consent Order (FFACO, 1996) and is located in Area 25 of the Nevada Test Site. CAU 528 was created to address polychlorinated biphenyl (PCB) contamination identified during the CAU 262 corrective action investigation. CAU 528 consists of one Corrective Action Site (CAS): CAS 25-27-03, Polychlorinated Biphenyls Surface Contamination.

  6. Correction of B 0-induced geometric distortion variations in prospective motion correction for 7T MRI.

    PubMed

    Yarach, Uten; Luengviriya, Chaiya; Stucht, Daniel; Godenschweger, Frank; Schulze, Peter; Speck, Oliver

    2016-06-01

    Prospective motion correction can effectively fix the imaging volume of interest. For large motion, this can lead to relative motion of coil sensitivities, distortions associated with imaging gradients and B 0 field variations. This work accounts for the B 0 field change due to subject movement, and proposes a method for correcting tissue magnetic susceptibility-related distortion in prospective motion correction. The B 0 field shifts at the different head orientations were characterized. A volunteer performed large motion with prospective motion correction enabled. The acquired data were divided into multiple groups according to the object positions. The correction of B 0-related distortion was applied to each group of data individually via augmented sensitivity encoding with additionally integrated gradient nonlinearity correction. The relative motion of the gradients, B 0 field and coil sensitivities in prospective motion correction results in residual spatial distortion, blurring, and coil artifacts. These errors can be mitigated by the proposed method. Moreover, iterative conjugate gradient optimization with regularization provided superior results with smaller RMSE in comparison to standard conjugate gradient. The combined correction of B 0-related distortion and gradient nonlinearity leads to a reduction of residual motion artifacts in prospective motion correction data.

  7. Prostate Diffusion Imaging with Distortion Correction

    PubMed Central

    Rakow-Penner, Rebecca A.; White, Nathan S.; Margolis, Daniel J. A.; Parsons, J. Kellogg; Schenker-Ahmed, Natalie; Kuperman, Joshua M.; Bartsch, Hauke; Choi, Hyung W.; Bradley, William G.; Shabaik, Ahmed; Huang, Jiaoti; Liss, Michael A.; Marks, Leonard; Kane, Christopher J.; Reiter, Robert E.; Raman, Steven S.; Karow, David S.; Dale, Anders M.

    2015-01-01

    Purpose Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and Methods 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b = 800 s/mm2). The restriction spectrum protocol parameters included b-values of 0, 800, 1500, and 4000 s/mm2 in 30 directions for each nonzero b-value. To correct for distortion, forward and reverse trajectories were collected at b = 0 s/mm2. Distortion maps were generated to reflect the offset of the collected data versus the corrected data. Whole-mount histology, was available for correlation. Results: Across the 27 patients evaluated (excluding one patient due to data collection error), the average root mean square distortion distance of the prostate was 3.1 mm (standard deviation, 2.2 mm; and maximum distortion, 12 mm). Conclusion Improved localization of prostate cancer by MRI will allow better surgical planning, targeted biopsies and image-guided treatment therapies. Distortion distances of up to 12 mm due to standard diffusion imaging may grossly misdirect treatment decisions. Distortion correction for diffusion imaging in the prostate improves tumor localization. PMID:26220859

  8. Probabilistic error correction for RNA sequencing.

    PubMed

    Le, Hai-Son; Schulz, Marcel H; McCauley, Brenna M; Hinman, Veronica F; Bar-Joseph, Ziv

    2013-05-01

    Sequencing of RNAs (RNA-Seq) has revolutionized the field of transcriptomics, but the reads obtained often contain errors. Read error correction can have a large impact on our ability to accurately assemble transcripts. This is especially true for de novo transcriptome analysis, where a reference genome is not available. Current read error correction methods, developed for DNA sequence data, cannot handle the overlapping effects of non-uniform abundance, polymorphisms and alternative splicing. Here we present SEquencing Error CorrEction in Rna-seq data (SEECER), a hidden Markov Model (HMM)-based method, which is the first to successfully address these problems. SEECER efficiently learns hundreds of thousands of HMMs and uses these to correct sequencing errors. Using human RNA-Seq data, we show that SEECER greatly improves on previous methods in terms of quality of read alignment to the genome and assembly accuracy. To illustrate the usefulness of SEECER for de novo transcriptome studies, we generated new RNA-Seq data to study the development of the sea cucumber Parastichopus parvimensis. Our corrected assembled transcripts shed new light on two important stages in sea cucumber development. Comparison of the assembled transcripts to known transcripts in other species has also revealed novel transcripts that are unique to sea cucumber, some of which we have experimentally validated. Supporting website: http://sb.cs.cmu.edu/seecer/.

  9. Target Uncertainty Mediates Sensorimotor Error Correction.

    PubMed

    Acerbi, Luigi; Vijayakumar, Sethu; Wolpert, Daniel M

    2017-01-01

    Human movements are prone to errors that arise from inaccuracies in both our perceptual processing and execution of motor commands. We can reduce such errors by both improving our estimates of the state of the world and through online error correction of the ongoing action. Two prominent frameworks that explain how humans solve these problems are Bayesian estimation and stochastic optimal feedback control. Here we examine the interaction between estimation and control by asking if uncertainty in estimates affects how subjects correct for errors that may arise during the movement. Unbeknownst to participants, we randomly shifted the visual feedback of their finger position as they reached to indicate the center of mass of an object. Even though participants were given ample time to compensate for this perturbation, they only fully corrected for the induced error on trials with low uncertainty about center of mass, with correction only partial in trials involving more uncertainty. The analysis of subjects' scores revealed that participants corrected for errors just enough to avoid significant decrease in their overall scores, in agreement with the minimal intervention principle of optimal feedback control. We explain this behavior with a term in the loss function that accounts for the additional effort of adjusting one's response. By suggesting that subjects' decision uncertainty, as reflected in their posterior distribution, is a major factor in determining how their sensorimotor system responds to error, our findings support theoretical models in which the decision making and control processes are fully integrated.

  10. Probabilistic error correction for RNA sequencing

    PubMed Central

    Le, Hai-Son; Schulz, Marcel H.; McCauley, Brenna M.; Hinman, Veronica F.; Bar-Joseph, Ziv

    2013-01-01

    Sequencing of RNAs (RNA-Seq) has revolutionized the field of transcriptomics, but the reads obtained often contain errors. Read error correction can have a large impact on our ability to accurately assemble transcripts. This is especially true for de novo transcriptome analysis, where a reference genome is not available. Current read error correction methods, developed for DNA sequence data, cannot handle the overlapping effects of non-uniform abundance, polymorphisms and alternative splicing. Here we present SEquencing Error CorrEction in Rna-seq data (SEECER), a hidden Markov Model (HMM)–based method, which is the first to successfully address these problems. SEECER efficiently learns hundreds of thousands of HMMs and uses these to correct sequencing errors. Using human RNA-Seq data, we show that SEECER greatly improves on previous methods in terms of quality of read alignment to the genome and assembly accuracy. To illustrate the usefulness of SEECER for de novo transcriptome studies, we generated new RNA-Seq data to study the development of the sea cucumber Parastichopus parvimensis. Our corrected assembled transcripts shed new light on two important stages in sea cucumber development. Comparison of the assembled transcripts to known transcripts in other species has also revealed novel transcripts that are unique to sea cucumber, some of which we have experimentally validated. Supporting website: http://sb.cs.cmu.edu/seecer/. PMID:23558750

  11. Halftone independent methods for color drift correction

    NASA Astrophysics Data System (ADS)

    Monga, Vishal; Wang, Shen-ge; Bala, Raja

    2007-01-01

    Color printer calibration is the process of deriving correction functions for device CMYK signals, so that the device can be maintained with a fixed known characteristic color response. Since the colorimetric response of the printer can be a strong function of the halftone, the calibration process must be repeated for every halftone supported by the printer. The effort involved in the calibration process thus increases linearly with the number of halftoning methods. In the past few years, it has become common for high-end digital color printers to be equipped with a large number of halftones thus making the calibration process onerous . We propose a halftone independent method for correcting color (CMY/CMYK) printer drift. Our corrections are derived by measuring a small number of halftone independent fundamental binary patterns based on the 2×2 binary printer model by Wang et. al. Hence, the required measurements do not increase as more halftoning methods are added. The key novelty in our work is in identifying an invariant halftone correction factor (HCF) that exploits the knowledge of the relationship between the true printer response and the 2×2 predicted response for a given halftoning scheme. We evaluate our scheme both quantitatively and qualitatively against the printer color correction transform derived with the printer in its "default state". Results indicate that the proposed method is very successful in calibrating a printer across a wide variety of halftones.

  12. Challenges in bias correcting climate change simulations

    NASA Astrophysics Data System (ADS)

    Maraun, Douglas; Shepherd, Ted; Zappa, Giuseppe; Gutierrez, Jose; Widmann, Martin; Hagemann, Stefan; Richter, Ingo; Soares, Pedro; Mearns, Linda

    2016-04-01

    Biases in climate model simulations - if these are directly used as input for impact models - will introduce further biases in subsequent impact simulations. In response to this issue, so-called bias correction methods have been developed to post-process climate model output. These methods are now widely used and a crucial component in the generation of high resolution climate change projections. Bias correction is conceptually similar to model output statistics, which has been successfully used for several decades in numerical weather prediction. Yet in climate science, some authors outrightly dismiss any form of bias correction. Starting from this seeming contradiction, we highlight differences between the two contexts and infer consequences and limitations for the applicability of bias correction to climate change projections. We first show that cross validation approaches successfully used to evaluate weather forecasts are fundamentally insufficient to evaluate climate change bias correction. We further demonstrate that different types of model mismatches with observations require different solutions, and some may not sensibly be mitigated. In particular we consider the influence of large-scale circulation biases, biases in the persistence of weather regimes, and regional biases caused by an insufficient representation of the flow-topography interaction. We conclude with a list of recommendations and suggestions for future research to reduce, to post-process, and to cope with climate model biases.

  13. Partial Volume Correction in Quantitative Amyloid Imaging

    PubMed Central

    Su, Yi; Blazey, Tyler M.; Snyder, Abraham Z.; Raichle, Marcus E.; Marcus, Daniel S.; Ances, Beau M.; Bateman, Randall J.; Cairns, Nigel J.; Aldea, Patricia; Cash, Lisa; Christensen, Jon J.; Friedrichsen, Karl; Hornbeck, Russ C.; Farrar, Angela M.; Owen, Christopher J.; Mayeux, Richard; Brickman, Adam M.; Klunk, William; Price, Julie C.; Thompson, Paul M.; Ghetti, Bernardino; Saykin, Andrew J.; Sperling, Reisa A.; Johnson, Keith A.; Schofield, Peter R.; Buckles, Virginia; Morris, John C.; Benzinger, Tammie. LS.

    2014-01-01

    Amyloid imaging is a valuable tool for research and diagnosis in dementing disorders. As positron emission tomography (PET) scanners have limited spatial resolution, measured signals are distorted by partial volume effects. Various techniques have been proposed for correcting partial volume effects, but there is no consensus as to whether these techniques are necessary in amyloid imaging, and, if so, how they should be implemented. We evaluated a two-component partial volume correction technique and a regional spread function technique using both simulated and human Pittsburgh compound B (PiB) PET imaging data. Both correction techniques compensated for partial volume effects and yielded improved detection of subtle changes in PiB retention. However, the regional spread function technique was more accurate in application to simulated data. Because PiB retention estimates depend on the correction technique, standardization is necessary to compare results across groups. Partial volume correction has sometimes been avoided because it increases the sensitivity to inaccuracy in image registration and segmentation. However, our results indicate that appropriate PVC may enhance our ability to detect changes in amyloid deposition. PMID:25485714

  14. The New Sunspot Number: Assembling All Corrections

    NASA Astrophysics Data System (ADS)

    Clette, Frédéric; Lefèvre, Laure

    2016-11-01

    Based on various diagnostics and corrections established in the framework of several Sunspot Number Workshops and described by Clette et al. ( Space Sci. Rev. 186, 35, 2014), we now assembled all separately derived corrections to produce a new standard version of the reference sunspot-number time series. We explain here the three main corrections and the criteria used to choose a final optimal version of each correction factor or function, given the available information and published analyses. We then discuss the differences between the new corrected series and the original sunspot number, including the disappearance of any significant rising secular trend in the solar-cycle amplitudes after this recalibration. We also introduce the new version management scheme now implemented at the World Data Center Sunspot Index and Long-term Solar Observations (WDC-SILSO), which reflects a major conceptual transition: beyond the rescaled numbers, this first revision of the sunspot number also transforms the former static data archive into a living observational series open to future improvements.

  15. Corrected sidereal anisotropy for underground muons

    NASA Astrophysics Data System (ADS)

    Swinson, D. B.; Nagashima, K.

    1985-09-01

    Data from underground muon telescopes in New Mexico and Bolivia are analyzed in sidereal time and antisidereal time to study anisotropies in the rigidity range 20 GV to a few 100s of GV. Using both vertical and north- and south-pointing telescopes in both hemispheres, a latitude range of 70 deg N-50 deg S is covered. The distribution of cosmic rays in the inner heliosphere gives rise to a diurnal variation in antisidereal time, and also produces a spurious contribution to the anisotropy in sidereal time. It is shown that the antisidereal variation is of the P2 super 1 type, having opposite phase in the Northern and Southern Hemispheres, and maximum amplitude at mid latitudes. The antisidereal data are used to correct the sidereal data, using the Nagashima (1985) method; the resulting corrected sidereal vectors for Northern Hemisphere telescopes have their sidereal maxima close to 3 h sidereal time, in reasonable agreement with sidereal data at higher energies from small air showers. The Nagashima correction also appears to eliminate effects due to the reversal of the sun's polar magnetic field, which show up in the uncorrected sidereal data, and which also remain in corrected data using an alternative correction.

  16. Upgrading telescopes by active pupil wavefront correction

    NASA Technical Reports Server (NTRS)

    Stacy, J. E.; Meinel, A. B.; Meinel, J. P.

    1986-01-01

    Exit pupil correction of the Large Deployable Reflector's (a proposed IR to sub-mm space telescope) segmented primary can be done by reimaging it onto a like segmented surface at the exit pupil. This allows the primary to be more flexible, the adaptive element to be smaller, and the supporting structure to be cheaper than if all correction were performed at a stiffly supported primary. Piston, tilt, and decenter errors of an annulus of the primary and the equations for the required corrections are considered. To verify these, the perturbations with spline functions in the lens design program are simulated. Strehl ratios used to measure image quality show that a piston error of 1 mm is fully corrected over a 5 arcmin field for an f/10 system with a 0.7 n.a. primary at 30 micrometers. Limits of correction are also shown for tilt and decenter errors of segments. Tolerances are given for tilt and decenter errors of the remaining optics also.

  17. Target Uncertainty Mediates Sensorimotor Error Correction

    PubMed Central

    Vijayakumar, Sethu; Wolpert, Daniel M.

    2017-01-01

    Human movements are prone to errors that arise from inaccuracies in both our perceptual processing and execution of motor commands. We can reduce such errors by both improving our estimates of the state of the world and through online error correction of the ongoing action. Two prominent frameworks that explain how humans solve these problems are Bayesian estimation and stochastic optimal feedback control. Here we examine the interaction between estimation and control by asking if uncertainty in estimates affects how subjects correct for errors that may arise during the movement. Unbeknownst to participants, we randomly shifted the visual feedback of their finger position as they reached to indicate the center of mass of an object. Even though participants were given ample time to compensate for this perturbation, they only fully corrected for the induced error on trials with low uncertainty about center of mass, with correction only partial in trials involving more uncertainty. The analysis of subjects’ scores revealed that participants corrected for errors just enough to avoid significant decrease in their overall scores, in agreement with the minimal intervention principle of optimal feedback control. We explain this behavior with a term in the loss function that accounts for the additional effort of adjusting one’s response. By suggesting that subjects’ decision uncertainty, as reflected in their posterior distribution, is a major factor in determining how their sensorimotor system responds to error, our findings support theoretical models in which the decision making and control processes are fully integrated. PMID:28129323

  18. Optical Correction of Aphakia in Children

    PubMed Central

    Baradaran-Rafii, Alireza; Shirzadeh, Ebrahim; Eslani, Medi; Akbari, Mitra

    2014-01-01

    There are several reasons for which the correction of aphakia differs between children and adults. First, a child's eye is still growing during the first few years of life and during early childhood, the refractive elements of the eye undergo radical changes. Second, the immature visual system in young children puts them at risk of developing amblyopia if visual input is defocused or unequal between the two eyes. Third, the incidence of many complications, in which certain risks are acceptable in adults, is unacceptable in children. The optical correction of aphakia in children has changed dramatically however, accurate optical rehabilitation and postoperative supervision in pediatric cases is more difficult than adults. Treatment and optical rehabilitation in pediatric aphakic patients remains a challenge for ophthalmologists. The aim of this review is to cover issues regarding optical correction of pediatric aphakia in children; kinds of optical correction , indications, timing of intraocular lens (IOL) implantation, types of IOLs, site of implantation, IOL power calculations and selection, complications of IOL implantation in pediatric patients and finally to determine the preferred choice of optical correction. However treatment of pediatric aphakia is one step on the long road to visual rehabilitation, not the end of the journey. PMID:24982736

  19. A Review of Target Mass Corrections

    SciTech Connect

    I. Schienbein; V. Radescu; G. Zeller; M. E. Christy; C. E. Keppel; K. S. McFarland; W. Melnitchouk; F. I. Olness; M. H. Reno; F. Steffens; J.-Y. Yu

    2007-09-06

    With recent advances in the precision of inclusive lepton-nuclear scattering experiments, it has become apparent that comparable improvements are needed in the accuracy of the theoretical analysis tools. In particular, when extracting parton distribution functions in the large-x region, it is crucial to correct the data for effects associated with the nonzero mass of the target. We present here a comprehensive review of these target mass corrections (TMC) to structure functions data, summarizing the relevant formulas for TMCs in electromagnetic and weak processes. We include a full analysis of both hadronic and partonic masses, and trace how these effects appear in the operator product expansion and the factorized parton model formalism, as well as their limitations when applied to data in the x -> 1 limit. We evaluate the numerical effects of TMCs on various structure functions, and compare fits to data with and without these corrections.

  20. RSA and its Correctness through Modular Arithmetic

    NASA Astrophysics Data System (ADS)

    Meelu, Punita; Malik, Sitender

    2010-11-01

    To ensure the security to the applications of business, the business sectors use Public Key Cryptographic Systems (PKCS). An RSA system generally belongs to the category of PKCS for both encryption and authentication. This paper describes an introduction to RSA through encryption and decryption schemes, mathematical background which includes theorems to combine modular equations and correctness of RSA. In short, this paper explains some of the maths concepts that RSA is based on, and then provides a complete proof that RSA works correctly. We can proof the correctness of RSA through combined process of encryption and decryption based on the Chinese Remainder Theorem (CRT) and Euler theorem. However, there is no mathematical proof that RSA is secure, everyone takes that on trust!.

  1. RCRA corrective action -- A practical guide

    SciTech Connect

    Abbasi, R.A.

    1995-10-01

    Under the 1984 Hazardous and Solid Waste Amendments to the Resource Conservation and Recovery Act, the Environmental Protection Agency requires treatment, storage and disposal facilities to investigate and remediate sites on which a release from solid waste management units has occurred. SWMUs include landfills, surface impoundments, waste piles, land treatment facilities, injection wells and container storage areas. HSWA requires corrective action for RCRA-permitted facilities and those with an interim status designation. Corrective actions can be implemented with relative ease at smaller facilities with a few SWMUs. However, larger facilities can be a regulatory nightmare, requiring a more comprehensive approach to corrective action. In such cases, facility managers must be more creative in analyzing the implementation process and ensuring that consistency among SWMUs is not jeopardized.

  2. Generic atmospheric correction models for radar measurements

    NASA Astrophysics Data System (ADS)

    Li, Zhenhong; Yu, Chen; Crippa, Paola; Penna, Nigel

    2017-04-01

    Atmospheric effects (especially the part due to tropospheric water vapour) represent one of the major error sources of repeat-pass Interferometric Synthetic Aperture Radar (InSAR), and limit the accuracy of InSAR derived surface displacements. The spatio-temporal variations of atmospheric water vapour make it a challenge to measure small-amplitude surface displacements with InSAR. In previous studies, several InSAR atmospheric correction models have been successfully demonstrated: (1) Ground-based correction models such as those using Global Navigation Satellite System (GNSS) and/or surface meteorological observations, (2) Space-based correction models including those involving NASA Moderate Resolution Imaging Spectroradiometer (MODIS) and/or ESA Medium Resolution Imaging Spectrometer (MERIS), and (3) Numerical Weather Model (NWM) based corrections including those using the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim and/or Weather Research and Forecasting (WRF) models. Each model has its own inherited limitations. For example, ground-based correction models are limited by the availability (and distribution) of ground observations, whilst MODIS/MERIS correction models are sensitive to the presence of clouds and there is often a time difference between space-based water vapour and radar observations. Similar to space-based correction models, NWM correction models might be impacted by the time difference between NWM and radar observations. Taking into account the inherent advantages and limitations of GNSS, MODIS and ECMWF water vapour products, we aim to develop a global and near-real-time mode InSAR atmospheric correction model. Tropospheric delays can be routinely retrieved from ground-based GNSS arrays in all-weather conditions and also in real-time. We develop an Iterative Tropospheric Decomposition (ITD) interpolation model that decouples the GNSS-estimated total tropospheric delays into (i) a stratified component highly correlated

  3. moco: Fast Motion Correction for Calcium Imaging.

    PubMed

    Dubbs, Alexander; Guevara, James; Yuste, Rafael

    2016-01-01

    Motion correction is the first step in a pipeline of algorithms to analyze calcium imaging videos and extract biologically relevant information, for example the network structure of the neurons therein. Fast motion correction is especially critical for closed-loop activity triggered stimulation experiments, where accurate detection and targeting of specific cells in necessary. We introduce a novel motion-correction algorithm which uses a Fourier-transform approach, and a combination of judicious downsampling and the accelerated computation of many L 2 norms using dynamic programming and two-dimensional, fft-accelerated convolutions, to enhance its efficiency. Its accuracy is comparable to that of established community-used algorithms, and it is more stable to large translational motions. It is programmed in Java and is compatible with ImageJ.

  4. Quantum steganography and quantum error-correction

    NASA Astrophysics Data System (ADS)

    Shaw, Bilal A.

    Quantum error-correcting codes have been the cornerstone of research in quantum information science (QIS) for more than a decade. Without their conception, quantum computers would be a footnote in the history of science. When researchers embraced the idea that we live in a world where the effects of a noisy environment cannot completely be stripped away from the operations of a quantum computer, the natural way forward was to think about importing classical coding theory into the quantum arena to give birth to quantum error-correcting codes which could help in mitigating the debilitating effects of decoherence on quantum data. We first talk about the six-qubit quantum error-correcting code and show its connections to entanglement-assisted error-correcting coding theory and then to subsystem codes. This code bridges the gap between the five-qubit (perfect) and Steane codes. We discuss two methods to encode one qubit into six physical qubits. Each of the two examples corrects an arbitrary single-qubit error. The first example is a degenerate six-qubit quantum error-correcting code. We explicitly provide the stabilizer generators, encoding circuits, codewords, logical Pauli operators, and logical CNOT operator for this code. We also show how to convert this code into a non-trivial subsystem code that saturates the subsystem Singleton bound. We then prove that a six-qubit code without entanglement assistance cannot simultaneously possess a Calderbank-Shor-Steane (CSS) stabilizer and correct an arbitrary single-qubit error. A corollary of this result is that the Steane seven-qubit code is the smallest single-error correcting CSS code. Our second example is the construction of a non-degenerate six-qubit CSS entanglement-assisted code. This code uses one bit of entanglement (an ebit) shared between the sender (Alice) and the receiver (Bob) and corrects an arbitrary single-qubit error. The code we obtain is globally equivalent to the Steane seven-qubit code and thus

  5. Kernel method for corrections to scaling.

    PubMed

    Harada, Kenji

    2015-07-01

    Scaling analysis, in which one infers scaling exponents and a scaling function in a scaling law from given data, is a powerful tool for determining universal properties of critical phenomena in many fields of science. However, there are corrections to scaling in many cases, and then the inference problem becomes ill-posed by an uncontrollable irrelevant scaling variable. We propose a new kernel method based on Gaussian process regression to fix this problem generally. We test the performance of the new kernel method for some example cases. In all cases, when the precision of the example data increases, inference results of the new kernel method correctly converge. Because there is no limitation in the new kernel method for the scaling function even with corrections to scaling, unlike in the conventional method, the new kernel method can be widely applied to real data in critical phenomena.

  6. Mobile image based color correction using deblurring

    NASA Astrophysics Data System (ADS)

    Wang, Yu; Xu, Chang; Boushey, Carol; Zhu, Fengqing; Delp, Edward J.

    2015-03-01

    Dietary intake, the process of determining what someone eats during the course of a day, provides valuable insights for mounting intervention programs for prevention of many chronic diseases such as obesity and cancer. The goals of the Technology Assisted Dietary Assessment (TADA) System, developed at Purdue University, is to automatically identify and quantify foods and beverages consumed by utilizing food images acquired with a mobile device. Color correction serves as a critical step to ensure accurate food identification and volume estimation. We make use of a specifically designed color checkerboard (i.e. a fiducial marker) to calibrate the imaging system so that the variations of food appearance under different lighting conditions can be determined. In this paper, we propose an image quality enhancement technique by combining image de-blurring and color correction. The contribution consists of introducing an automatic camera shake removal method using a saliency map and improving the polynomial color correction model using the LMS color space.

  7. [Aggression and mobbing among correctional officers].

    PubMed

    Merecz-Kot, Dorota; Cebrzyńska, Joanna

    2008-01-01

    The paper addresses the issue of violence among correctional officers. The aim of the study was to assess the frequency of exposure to violence in this professional group. The study comprised the sample of 222 correctional officers who voluntary and anonymously fulfilled the MDM questionnaire. The MDM Questionnaire allows for assessing exposure to aggression and mobbing at work. Preliminary assessment of exposure to single aggressive acts and mobbing shows a quite alarming tendency--around one third of subjects under the study experienced repetitive aggressive acts from coworkers and/or superiors. The problem of organizational aggression in correctional institutions should be recognized in details to develop effective preventive measures against violent behaviors occurring at work.

  8. Quantum corrected Schwarzschild thin-shell wormhole

    NASA Astrophysics Data System (ADS)

    Jusufi, Kimet

    2016-11-01

    Recently, Ali and Khalil (Nucl Phys B, 909, 173-185, 2016), based on Bohmian quantum mechanics, derived a quantum corrected version of the Schwarzschild metric. In this paper, we construct a quantum corrected Schwarzschild thin-shell wormhole (QSTSW) and investigate the stability of this wormhole. First we compute the surface stress at the wormhole throat by applying the Darmois-Israel formalism to the modified Schwarzschild metric and show that exotic matter is required at the throat to keep the wormhole stable. We then study the stability analysis of the wormhole by considering phantom-energy for the exotic matter, generalized Chaplygin gas (GCG), and the linearized stability analysis. It is argued that quantum corrections can affect the stability domain of the wormhole.

  9. RCRA corrective action program guide (Interim)

    SciTech Connect

    Not Available

    1993-05-01

    The US Department of Energy (DOE) is responsible for compliance with an increasingly complex spectrum of environmental regulations. One of the most complex programs is the corrective action program proposed by the US Environmental Protection Agency (EPA) under the authority of the Resource Conservation and Recovery Act (RCRA) as amended by the Hazardous and Solid Waste Amendments (HSWA). The proposed regulations were published on July 27, 1990. The proposed Subpart S rule creates a comprehensive program for investigating and remediating releases of hazardous wastes and hazardous waste constituents from solid waste management units (SWMUs) at facilities permitted to treat, store, or dispose of hazardous wastes. This proposed rule directly impacts many DOE facilities which conduct such activities. This guidance document explains the entire RCRA Corrective Action process as outlined by the proposed Subpart S rule, and provides guidance intended to assist those persons responsible for implementing RCRA Corrective Action at DOE facilities.

  10. moco: Fast Motion Correction for Calcium Imaging

    PubMed Central

    Dubbs, Alexander; Guevara, James; Yuste, Rafael

    2016-01-01

    Motion correction is the first step in a pipeline of algorithms to analyze calcium imaging videos and extract biologically relevant information, for example the network structure of the neurons therein. Fast motion correction is especially critical for closed-loop activity triggered stimulation experiments, where accurate detection and targeting of specific cells in necessary. We introduce a novel motion-correction algorithm which uses a Fourier-transform approach, and a combination of judicious downsampling and the accelerated computation of many L2 norms using dynamic programming and two-dimensional, fft-accelerated convolutions, to enhance its efficiency. Its accuracy is comparable to that of established community-used algorithms, and it is more stable to large translational motions. It is programmed in Java and is compatible with ImageJ. PMID:26909035

  11. A new trajectory correction technique for linacs

    SciTech Connect

    Raubenheimer, T.O.; Ruth, R.D.

    1990-06-01

    In this paper, we describe a new trajectory correction technique for high energy linear accelerators. Current correction techniques force the beam trajectory to follow misalignments of the Beam Position Monitors. Since the particle bunch has a finite energy spread and particles with different energies are deflected differently, this causes chromatic'' dilution of the transverse beam emittance. The algorithm, which we describe in this paper, reduces the chromatic error by minimizing the energy dependence of the trajectory. To test the method we compare the effectiveness of our algorithm with a standard correction technique in simulations on a design linac for a Next Linear Collider. The simulations indicate that chromatic dilution would be debilitating in a future linear collider because of the very small beam sizes required to achieve the necessary luminosity. Thus, we feel that this technique will prove essential for future linear colliders. 3 refs., 6 figs., 2 tabs.

  12. Corrected sidereal anisotropy for underground moons

    NASA Technical Reports Server (NTRS)

    Swinson, D. B.; Nagashima, K.

    1985-01-01

    Data from underground muon telescopes in New Mexico and Bolivia are analyzed in sidereal time and anti-sidereal time in the rigidity range 20 GV to a few 100's of GV. Using both vertical and north- and south- pointing telescopes in both hemispheres, a latitude range of 70 N to 50 S is covered. It is shown that there is an anti-sidereal variation of the P 1 over 2 type, having opposite phase in the Northern and Southern Hemispheres, and maximum amplitude at mid latitudes. The anti-sidereal data are used to correct the sidereal data, using the Nagashima method (Nagashima, 1984); the resulting corrected sidereal vectors for northern hemisphere telescopes have their sidereal maxima close to 3h sidereal time, in reasonable agreement with sidereal data at higher energies from small air showers. The Nagashima correction also eliminates effects due to the reversal of the Sun's polar magnetic field which show up in the uncorrected sidereal data.

  13. Corrected sidereal anisotropy for underground moons

    NASA Astrophysics Data System (ADS)

    Swinson, D. B.; Nagashima, K.

    1985-08-01

    Data from underground muon telescopes in New Mexico and Bolivia are analyzed in sidereal time and anti-sidereal time in the rigidity range 20 GV to a few 100's of GV. Using both vertical and north- and south- pointing telescopes in both hemispheres, a latitude range of 70 N to 50 S is covered. It is shown that there is an anti-sidereal variation of the P 1 over 2 type, having opposite phase in the Northern and Southern Hemispheres, and maximum amplitude at mid latitudes. The anti-sidereal data are used to correct the sidereal data, using the Nagashima method (Nagashima, 1984); the resulting corrected sidereal vectors for northern hemisphere telescopes have their sidereal maxima close to 3h sidereal time, in reasonable agreement with sidereal data at higher energies from small air showers. The Nagashima correction also eliminates effects due to the reversal of the Sun's polar magnetic field which show up in the uncorrected sidereal data.

  14. Mobile Image Based Color Correction Using Deblurring

    PubMed Central

    Wang, Yu; Xu, Chang; Boushey, Carol; Zhu, Fengqing; Delp, Edward J.

    2016-01-01

    Dietary intake, the process of determining what someone eats during the course of a day, provides valuable insights for mounting intervention programs for prevention of many chronic diseases such as obesity and cancer. The goals of the Technology Assisted Dietary Assessment (TADA) System, developed at Purdue University, is to automatically identify and quantify foods and beverages consumed by utilizing food images acquired with a mobile device. Color correction serves as a critical step to ensure accurate food identification and volume estimation. We make use of a specifically designed color checkerboard (i.e. a fiducial marker) to calibrate the imaging system so that the variations of food appearance under different lighting conditions can be determined. In this paper, we propose an image quality enhancement technique by combining image de-blurring and color correction. The contribution consists of introducing an automatic camera shake removal method using a saliency map and improving the polynomial color correction model using the LMS color space. PMID:28572697

  15. Landsat TM memory effect characterization and correction

    USGS Publications Warehouse

    Helder, D.; Boncyk, W.; Morfitt, R.

    1997-01-01

    Before radiometric calibration of Landsat Thematic Mapper (TM) data can be done accurately, it is necessary to minimize the effects of artifacts present in the data that originate in the instrument's signal processing path. These artifacts have been observed in downlinked image data since shortly after launch of Landsat 4 and 5. However, no comprehensive work has been done to characterize all the artifacts and develop methods for their correction. In this paper, the most problematic artifact is discussed: memory effect (ME). Characterization of this artifact is presented, including the parameters necessary for its correction. In addition, a correction algorithm is described that removes the artifact from TM imagery. It will be shown that this artifact causes significant radiometry errors, but the effect can be removed in a straightforward manner.

  16. Surgical correction of astigmatism during cataract surgery.

    PubMed

    Buckhurst, Phillip J; Wolffsohn, James S; Davies, Leon N; Naroo, Shehzad A

    2010-11-01

    High levels of corneal astigmatism are prevalent in a significant proportion of the population. During cataract surgery pre-existing astigmatism can be corrected using single or paired incisions on the steep axis of the cornea, using relaxing incisions or with the use of a toric intraocular lens. This review provides an overview of the conventional methods of astigmatic correction during cataract surgery and in particular, discusses the various types of toric lenses presently available and the techniques used in determining the correct axis for the placement of such lenses. Furthermore, the potential causes of rotation in toric lenses are identified, along with techniques for assessing and quantifying the amount of rotation and subsequent management options for addressing post-operative rotation.

  17. Respiration correction by clustering in ultrasound images

    NASA Astrophysics Data System (ADS)

    Wu, Kaizhi; Chen, Xi; Ding, Mingyue; Sang, Nong

    2016-03-01

    Respiratory motion is a challenging factor for image acquisition, image-guided procedures and perfusion quantification using contrast-enhanced ultrasound in the abdominal and thoracic region. In order to reduce the influence of respiratory motion, respiratory correction methods were investigated. In this paper we propose a novel, cluster-based respiratory correction method. In the proposed method, we assign the image frames of the corresponding respiratory phase using spectral clustering firstly. And then, we achieve the images correction automatically by finding a cluster in which points are close to each other. Unlike the traditional gating method, we don't need to estimate the breathing cycle accurate. It is because images are similar at the corresponding respiratory phase, and they are close in high-dimensional space. The proposed method is tested on simulation image sequence and real ultrasound image sequence. The experimental results show the effectiveness of our proposed method in quantitative and qualitative.

  18. Using Evolutionary Computation on GPS Position Correction

    PubMed Central

    2014-01-01

    More and more devices are equipped with global positioning system (GPS). However, those handheld devices with consumer-grade GPS receivers usually have low accuracy in positioning. A position correction algorithm is therefore useful in this case. In this paper, we proposed an evolutionary computation based technique to generate a correction function by two GPS receivers and a known reference location. Locating one GPS receiver on the known location and combining its longitude and latitude information and exact poisoning information, the proposed technique is capable of evolving a correction function by such. The proposed technique can be implemented and executed on handheld devices without hardware reconfiguration. Experiments are conducted to demonstrate performance of the proposed technique. Positioning error could be significantly reduced from the order of 10 m to the order of 1 m. PMID:24578657

  19. Ellipsoidal corrections for geoid undulation computations

    NASA Technical Reports Server (NTRS)

    Rapp, R. H.

    1981-01-01

    The computation of accurate geoid undulations is usually done combining potential coefficient information and terrestrial gravity data in a cap surrounding the computation point. In doing this a spherical approximation is made that can cause the errors that were investigated. The equations dealing with ellipsoidal corrections developed by Lelgemann and by Moritz were used to develop a computational procedure considering the ellipsoid as a reference surface. Terms in the resulting expression for the geoid undulation are identified as ellipsoidal correction terms. These equations were developed for the case where the Stokes function is used, and for the case where the modified Stokes function is used. For a cap of 20 deg the correction can reach -33 cm.

  20. Influence of refractive correction on ocular dominance

    NASA Astrophysics Data System (ADS)

    Nakayama, Nanami; Kawamorita, Takushi; Uozato, Hiroshi

    2010-07-01

    We investigated the effects of refractive correction and refractive defocus on the assessment of sensory ocular dominance. In 25 healthy subjects (4 males and 21 females) aged between 20 and 31 years, a quantitative measurement of sensory ocular dominance was performed with refractive correction and the addition of a positive lens on the dominant eye. Sensory ocular dominance was measured with a chart using binocular rivalry targets. The reversal point changed after the addition of a +1.00 D lens on the dominant eye in all subjects. However, sighting ocular dominance and stereopsis did not change after the addition of a positive lens on the dominant eye ( P > 0:05, Wilcoxon test). These results suggest that refractive correction affects sensory ocular dominance, indicating the possible development of a new type of occlusion for amblyopia in the future.

  1. Higher derivative corrections in holographic QCD

    SciTech Connect

    Basu, Anirban

    2007-12-15

    We consider the effect of the R{sup 4} term in type IIA string theory on the supergravity background dual to N{sub c} D4-branes compactified on a circle with supersymmetry breaking boundary conditions. We study the dynamics of D8-branes in this perturbed geometry in the probe approximation. This leads to an analysis of higher derivative corrections in holographic QCD beyond the supergravity approximation. We make a rough estimate of the corrections to the masses of some of the lightest (axial) vector mesons. The corrections are suppressed by a factor of (g{sub YM}{sup 2}N{sub c}){sup -3} compared to their supergravity values. We find that the masses of these mesons increase from their supergravity values.

  2. Housekeeping category corrective action unit work plan

    SciTech Connect

    1996-08-01

    The purpose of this Corrective Action Unit (CAU) Work Plan is to provide a strategy to be used by the US Department of Energy Nevada Operations Office (DOE/NV), the US Department of Defense (DoD) Defense Special Weapons Agency (DSWA) (formerly the Defense Nuclear Agency), and contractor personnel for conducting corrective actions at the Nevada Test Site (NTS) and Nevada off-site locations including the Tonopah Test Range (TTR), the Project Shoal Area, and the Central Nevada Test Area. This Work Plan applies to housekeeping category CAUs already listed in the Federal Facility Agreement and Consent Order (FFACO) Appendices (FFACO, 1996) as well as newly identified Corrective Action Sites (CASs) that will follow the housekeeping process.

  3. TB in Correctional Facilities Is a Public Health Concern

    MedlinePlus

    ... file Error processing SSI file TB in Correctional Facilities is a Public Health Concern Recommend on Facebook ... Figure 1 (larger view). TB Control in Correctional Facilities Diagnosing and treating TB in correctional facilities reduces ...

  4. Towards self-correcting quantum memories

    NASA Astrophysics Data System (ADS)

    Michnicki, Kamil

    This thesis presents a model of self-correcting quantum memories where quantum states are encoded using topological stabilizer codes and error correction is done using local measurements and local dynamics. Quantum noise poses a practical barrier to developing quantum memories. This thesis explores two types of models for suppressing noise. One model suppresses thermalizing noise energetically by engineering a Hamiltonian with a high energy barrier between code states. Thermalizing dynamics are modeled phenomenologically as a Markovian quantum master equation with only local generators. The second model suppresses stochastic noise with a cellular automaton that performs error correction using syndrome measurements and a local update rule. Several ways of visualizing and thinking about stabilizer codes are presented in order to design ones that have a high energy barrier: the non-local Ising model, the quasi-particle graph and the theory of welded stabilizer codes. I develop the theory of welded stabilizer codes and use it to construct a code with the highest known energy barrier in 3-d for spin Hamiltonians: the welded solid code. Although the welded solid code is not fully self correcting, it has some self correcting properties. It has an increased memory lifetime for an increased system size up to a temperature dependent maximum. One strategy for increasing the energy barrier is by mediating an interaction with an external system. I prove a no-go theorem for a class of Hamiltonians where the interaction terms are local, of bounded strength and commute with the stabilizer group. Under these conditions the energy barrier can only be increased by a multiplicative constant. I develop cellular automaton to do error correction on a state encoded using the toric code. The numerical evidence indicates that while there is no threshold, the model can extend the memory lifetime significantly. While of less theoretical importance, this could be practical for real

  5. BTPS correction for ceramic flow sensor.

    PubMed

    Hankinson, J L; Viola, J O; Petsonk, E L; Ebeling, T R

    1994-05-01

    Several commercially available spirometers use unheated ceramic elements as flow sensors to determine flow and calculate volume of air. The usual method of correcting the resulting flow and volume values to body temperature pressure saturated (BTPS) is to apply a constant factor approximately equal to 30 percent of the full BTPS correction factor. To evaluate the usual BTPS correction factor technique, we tested several sensors with a mechanical pump using both room air and air heated to 37 degrees C and saturated with water vapor. The volume signals used to test the sensors were volume ramps (constant flow) and the first four American Thoracic Society (ATS) standard waveforms. The percent difference in FEV1 obtained using room vs heated-humidified air (proportional to the magnitude of the BTPS correction factor needed) ranged from 0.3 percent to 6.2 percent and varied with the number of maneuvers previously performed, the time interval between maneuvers, the volume of the current and previous maneuvers, and the starting temperature of the sensor. The temperature of the air leaving the sensor (exit temperature) showed a steady rise with each successive maneuver using heated air. When six subjects performed repeated tests over several days (each test consisting of at least three maneuvers), a maneuver order effect was observed similar to the results using the mechanical pump. These results suggest that a dynamic, rather than static, BTPS correction factor is needed for accurate estimations of forced expiratory volumes and to reduce erroneous variability between successive maneuvers. Use of exit air temperature provides a means of estimating a dynamic BTPS correction factor, and this technique may be sufficient to provide an FEV1 accuracy of less than +/- 3 percent for exit air temperatures from 5 degrees to 28 degrees C.

  6. SinoCor: motion correction in SPECT

    NASA Astrophysics Data System (ADS)

    Mitra, Debasis; Eiland, Daniel; Abdallah, Mahmoud; Bouthcko, Rostyslav; Gullberg, Grant T.; Schechtmann, Norberto

    2012-02-01

    Motion is a serious artifact in Cardiac nuclear imaging because the scanning operation takes a long time. Since reconstruction algorithms assume consistent or stationary data the quality of resulting image is affected by motion, sometimes significantly. Even after adoption of the gold standard MoCo(R) algorithm from Cedars-Sinai by most vendors, heart motion remains a significant challenge. Also, any serious study in quantitative analysis necessitates correction for motion artifacts. It is generally recognized that human eye is a very sensitive tool for detecting motion. However, two reasons prevent such manual correction: (1) it is costly in terms of specialist's time, and (2) no such tool for manual correction is available currently. Previously, at SPIE-MIC'11, we presented a simple tool (SinoCor) that allows sinograms to be corrected manually or automatically. SinoCor performs correction of sinograms containing inter-frame patient or respiratory motions using rigid-body dynamics. The software is capable of detecting the patient motion and estimating the body-motion vector using scanning geometry parameters. SinoCor applies appropriate geometrical correction to all the frames subsequent to the frame when the movement has occurred in a manual or automated mode. For respiratory motion, it is capable of automatically smoothing small oscillatory (frame-wise local) movements. Lower order image moments are used to represent a frame and the required rigid body movement compensation is computed accordingly. Our current focus is on enhancement of SinoCor with the capability to automatically detect and compensate for intra-frame motion that causes motion blur on the respective frame. Intra-frame movements are expected in both patient and respiratory motions. For a controlled study we also have developed a motion simulator. A stable version of SinoCor is available under license from Lawrence Berkeley National Laboratory.

  7. Computing correct truncated excited state wavefunctions

    NASA Astrophysics Data System (ADS)

    Bacalis, N. C.; Xiong, Z.; Zang, J.; Karaoulanis, D.

    2016-12-01

    We demonstrate that, if a wave function's truncated expansion is small, then the standard excited states computational method, of optimizing one "root" of a secular equation, may lead to an incorrect wave function - despite the correct energy according to the theorem of Hylleraas, Undheim and McDonald - whereas our proposed method [J. Comput. Meth. Sci. Eng. 8, 277 (2008)] (independent of orthogonality to lower lying approximants) leads to correct reliable small truncated wave functions. The demonstration is done in He excited states, using truncated series expansions in Hylleraas coordinates, as well as standard configuration-interaction truncated expansions.

  8. Corrective Osteotomies for Malunited Malleolar Fractures.

    PubMed

    Weber, Daniel; Weber, Martin

    2016-03-01

    Ankle fractures are common and may be treated nonoperatively or by reduction and internal fixation. Both treatments may lead to nonanatomic healing, called malunions. Malunions lead to joint instability and pathologic load transfer. Arthritic joint destruction may be the consequence. Corrective osteotomies for malunited malleolar fractures have to restore anatomic conditions. Osteotomies of the medial malleolus, lateral malleolus, posterior malleolus (Volkmann's triangle), and the posteromedial corner or combinations thereof described. Corrective osteotomies for malleolar malunions show good results in the majority of mid- and long-term studies. Secondary arthrodesis is needed in about 10% to 15% of patients. Copyright © 2016 Elsevier Inc. All rights reserved.

  9. Finite volume corrections to pi pi scattering

    SciTech Connect

    Sato, Ikuro; Bedaque, Paulo F.; Walker-Loud, Andre

    2006-01-13

    Lattice QCD studies of hadron-hadron interactions are performed by computing the energy levels of the system in a finite box. The shifts in energy levels proportional to inverse powers of the volume are related to scattering parameters in a model independent way. In addition, there are non-universal exponentially suppressed corrections that distort this relation. These terms are proportional to e-m{sub pi} L and become relevant as the chiral limit is approached. In this paper we report on a one-loop chiral perturbation theory calculation of the leading exponential corrections in the case of I=2 pi pi scattering near threshold.

  10. EPU correction scheme study at the CLS

    SciTech Connect

    Bertwistle, Drew Baribeau, C.; Dallin, L.; Chen, S.; Vogt, J.; Wurtz, W.

    2016-07-27

    The Canadian Light Source (CLS) Quantum Materials Spectroscopy Center (QMSC) beamline will employ a novel double period (55 mm, 180 mm) elliptically polarizing undulator (EPU) to produce photons of arbitrary polarization in the soft X-ray regime. The long period and high field of the 180 mm period EPU will have a strong dynamic focusing effect on the storage ring electron beam. We have considered two partial correction schemes, a 4 m long planar array of BESSY-II style current strips, and soft iron L-shims. In this paper we briefly consider the implementation of these correction schemes.

  11. The NASTRAN Error Correction Information System (ECIS)

    NASA Technical Reports Server (NTRS)

    Rosser, D. C., Jr.; Rogers, J. L., Jr.

    1975-01-01

    A data management procedure, called Error Correction Information System (ECIS), is described. The purpose of this system is to implement the rapid transmittal of error information between the NASTRAN Systems Management Office (NSMO) and the NASTRAN user community. The features of ECIS and its operational status are summarized. The mode of operation for ECIS is compared to the previous error correction procedures. It is shown how the user community can have access to error information much more rapidly when using ECIS. Flow charts and time tables characterize the convenience and time saving features of ECIS.

  12. Cylinder yard inspections and corrective actions

    SciTech Connect

    Barlow, C.R. ); Ziehlke, K.T. ); Pryor, W.A. )

    1990-07-31

    Inspection of valves on stored uranium hexafluoride (UF{sub 6}) cylinders was initiated at the three diffusion plant sites in Oak Ridge, Tennessee, Paducah, Kentucky, and Portsmouth, Ohio as the result of the discovery of valve defects and evidence of valve leaks at the Oak Ridge K-25 plant. The coordinated inspection culminated in the identification of additional factors related to long-term safe storage of UF{sub 6}, and plans for correction of such deficiencies are presently being developed and implemented. These corrective actions supplement existing programs aimed at assurance of safe storage as summarized in the report.

  13. VIZTAB - the VIZ table correction model

    SciTech Connect

    Luers, J.K.

    1994-01-01

    The VIZ atmospheric temperature correction model VIZCOR calculates the temperature correction for the VIZ rod thermistor as a function of environmental parameters. The specified environmental input parameters are used in LOWTRAN7 to define the radiation environment experienced by the radiosonde. Running VIZCOR, with the associated LOWTRAN7 model, requires nearly 5 minutes of computer time on a 486x5O processor. Because this computer execution time is excessive for processing large quantities of radiosonde data, a regression model was developed that parameterizes the results of many runs of the VIZCOR model. The regression model, which contains table look-up algorithms, has been designated VIZTAB.

  14. Digital Perspective Correction For Cylindrical Holographic Stereograms

    NASA Astrophysics Data System (ADS)

    Jaffey, Stephen M.; Dutta, Kalyan

    1983-04-01

    This paper discusses digital perspective correction in the multiplex hologram,also known as Cross hologram or white light cylindrical holographic stereogram. It presents digital analogues of previously reported optical methods, and demonstrates the digital implementation of Benton's method. It introduces a non-linear remapping of the input views to compensate for a non-uniform color viewing position. Simulation results are included on the relative accuracy of different algorithms. Digital correction can be applied to both real and artificial objects such as computed tomography (CT) data.

  15. Aberration corrected Lorentz scanning transmission electron microscopy.

    PubMed

    McVitie, S; McGrouther, D; McFadzean, S; MacLaren, D A; O'Shea, K J; Benitez, M J

    2015-05-01

    We present results from an aberration corrected scanning transmission electron microscope which has been customised for high resolution quantitative Lorentz microscopy with the sample located in a magnetic field free or low field environment. We discuss the innovations in microscope instrumentation and additional hardware that underpin the imaging improvements in resolution and detection with a focus on developments in differential phase contrast microscopy. Examples from materials possessing nanometre scale variations in magnetisation illustrate the potential for aberration corrected Lorentz imaging as a tool to further our understanding of magnetism on this lengthscale.

  16. LETTER: Fisher renormalization for logarithmic corrections

    NASA Astrophysics Data System (ADS)

    Kenna, Ralph; Hsu, Hsiao-Ping; von Ferber, Christian

    2008-10-01

    For continuous phase transitions characterized by power-law divergences, Fisher renormalization prescribes how to obtain the critical exponents for a system under constraint from their ideal counterparts. In statistical mechanics, such ideal behaviour at phase transitions is frequently modified by multiplicative logarithmic corrections. Here, Fisher renormalization for the exponents of these logarithms is developed in a general manner. As for the leading exponents, Fisher renormalization at the logarithmic level is seen to be involutory and the renormalized exponents obey the same scaling relations as their ideal analogues. The scheme is tested in lattice animals and the Yang-Lee problem at their upper critical dimensions, where predictions for logarithmic corrections are made.

  17. Habit breaking appliance for multiple corrections.

    PubMed

    Abraham, Reji; Kamath, Geetha; Sodhi, Jasmeet Singh; Sodhi, Sonia; Rita, Chandki; Sai Kalyan, S

    2013-01-01

    Tongue thrusting and thumb sucking are the most commonly seen oral habits which act as the major etiological factors in the development of dental malocclusion. This case report describes a fixed habit correcting appliance, Hybrid Habit Correcting Appliance (HHCA), designed to eliminate these habits. This hybrid appliance is effective in less compliant patients and if desired can be used along with the fixed orthodontic appliance. Its components can act as mechanical restrainers and muscle retraining devices. It is also effective in cases with mild posterior crossbites.

  18. Habit Breaking Appliance for Multiple Corrections

    PubMed Central

    Abraham, Reji; Kamath, Geetha; Sodhi, Jasmeet Singh; Sodhi, Sonia; Rita, Chandki; Sai Kalyan, S.

    2013-01-01

    Tongue thrusting and thumb sucking are the most commonly seen oral habits which act as the major etiological factors in the development of dental malocclusion. This case report describes a fixed habit correcting appliance, Hybrid Habit Correcting Appliance (HHCA), designed to eliminate these habits. This hybrid appliance is effective in less compliant patients and if desired can be used along with the fixed orthodontic appliance. Its components can act as mechanical restrainers and muscle retraining devices. It is also effective in cases with mild posterior crossbites. PMID:24198976

  19. Atmospheric model for correction of spacecraft data.

    NASA Technical Reports Server (NTRS)

    Turner, R. E.; Spencer, M. M.

    1973-01-01

    Description of a radiative transfer model which has been used to correct Apollo photographic imagery for degradation arising from atmospheric scattering. The model was tested using aircraft scanner data, and an extrapolation was then made to spacecraft altitudes. Using standard meteorological data for the region of interest, it is possible to determine transmittance, path radiance, and total radiance from calculations made with the multiple scattering atmospheric model. Simple algorithms are presented which allow potential users of spacecraft sensor data to correct imagery for the deleterious effects due to the scattering of radiation under clear or hazy atmospheric conditions.

  20. Mixed-Precision Spectral Deferred Correction: Preprint

    SciTech Connect

    Grout, Ray W. S.

    2015-09-02

    Convergence of spectral deferred correction (SDC), where low-order time integration methods are used to construct higher-order methods through iterative refinement, can be accelerated in terms of computational effort by using mixed-precision methods. Using ideas from multi-level SDC (in turn based on FAS multigrid ideas), some of the SDC correction sweeps can use function values computed in reduced precision without adversely impacting the accuracy of the final solution. This is particularly beneficial for the performance of combustion solvers such as S3D [6] which require double precision accuracy but are performance limited by the cost of data motion.

  1. Image correction in magneto-optical microscopy

    NASA Astrophysics Data System (ADS)

    Paturi, P.; Larsen, B. Hvolbæk; Jacobsen, B. A.; Andersen, N. H.

    2003-06-01

    An image-processing procedure that assures correct determination of the magnetic field distribution of magneto-optical images is presented. The method remedies image faults resulting from sources that are proportional to the incident light intensity, such as different types of defects in the indicator film and unevenness of light, as well as additive signals from detector bias, external light sources, etc. When properly corrected a better measurement of the local magnetic field can be made, even in the case of heavily damaged films. For superconductors the magnetic field distributions may be used for accurate determination of the current distributions without the spurious current loops associated with defects in the films.

  2. Static correction using near surface model

    SciTech Connect

    Deying, Z. )

    1992-01-01

    In this paper, a new static correction using inverse modeling of first break is recommended. It is based on the least square of the difference between the real reflection first break time and corresponding modeled ray-tracing travel time. The initial model derives from priori informations or traditional interpretation results. The preconditioned fastest descent means in inversion achieves simultaneous inversions of overlying-bed velocity and refractor depth. This method has been successfully used to yield theoretical seismic data and to perform static correction of the seismic data in A district.

  3. Thermoelectric corrections to quantum voltage measurement

    NASA Astrophysics Data System (ADS)

    Bergfield, Justin P.; Stafford, Charles A.

    2014-12-01

    A generalization of Büttiker's voltage probe concept for nonzero temperatures is an open third terminal of a quantum thermoelectric circuit. An explicit analytic expression for the thermoelectric correction to an ideal quantum voltage measurement in linear response is derived and interpreted in terms of local Peltier cooling/heating within the nonequilibrium system. The thermoelectric correction is found to be large (up to ±24 % of the peak voltage) in a prototypical ballistic quantum conductor (graphene nanoribbon). The effects of measurement nonideality are also investigated. Our findings have important implications for precision local electrical measurements.

  4. Full chip correction of EUV design

    NASA Astrophysics Data System (ADS)

    Lorusso, G. F.; Hendrickx, E.; Fenger, G. L.; Niroomand, A.

    2010-04-01

    Extreme Ultraviolet Lithography (EUVL) is currently the most promising technology for advanced manufacturing nodes: it recently demonstrated the feasibility of 32nm and 22nm node devices, and pre-production tools are expected to be delivered by 2010. Generally speaking, EUVL is less in need of Optical Proximity Correction (OPC) as compared to 193nm lithography, and the device feasibility studies were indeed carried out with limited or no correction. However, a rigorous optical correction strategy and an appropriate Electronic Design Automation (EDA) infrastructure is critical to face the challenges of the 22nm node and beyond, and EUV-specific effects such as flare and shadowing have to be fully integrated in the correction flow and properly tested. This study aims to assess in detail the quality of a full chip optical correction for a EUV design, as well to discuss the available approaches to compensate for EUV-specific effects. Extensive data sets have been collected on the ASML EUV Alpha-Demo Tool (ADT) using the latest IMEC baseline resist Shin-Etsu SEVR59. In total about 1300 CD measurements at wafer level and 700 at mask level were used as input for model calibration and validation. The smallest feature size in the data set was 32nm. Both one-dimensional and two-dimensional structures through CD and pitch were measured. The mask used in this calibration exercise allowed the authors to modulate flare by varying tiling densities within the range expected in the final design. The OPC model was fitted and validated against the CD data collected on the EUV ADT. The shadowing effect was modeled by means of a single bias correction throughout the design. Horizontal and vertical features of different type through pitch and CD were used to calibrate the shadowing correction, and the extent of the validity of the single bias approach is discussed. In addition, the quality of the generated full-chip flare maps has been tested against experimental results, and the model

  5. Extending the Error Correction Capability of Linear Codes,

    DTIC Science & Technology

    be made to tolerate and correct up to (k-1) bit failures. Thus if the classical error correction bounds are assumed, a linear transmission code used...in digital circuitry is under-utilized. For example, the single- error - correction , double-error-detection Hamming code could be used to correct up to...two bit failures with some additional error correction circuitry. A simple algorithm for correcting these extra errors in linear codoes is presented. (Author)

  6. Iranian EFL Teachers' and Learners' Perspectives of Oral Error Correction: Does the Timeline of Correction Matter?

    ERIC Educational Resources Information Center

    Farahani, Ali Akbar; Salajegheh, Soory

    2015-01-01

    Although the provision of error correction is common in education, there are controversies regarding "when" correction is most effective and why it is effective. This study investigated the differences between Iranian English as a foreign language (EFL) teachers and learners regarding their perspectives towards the timeline of error…

  7. 26 CFR 53.4961-1 - Abatement of second tier taxes for correction within correction period.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 26 Internal Revenue 17 2013-04-01 2013-04-01 false Abatement of second tier taxes for correction... TAXES Second Tier Excise Taxes § 53.4961-1 Abatement of second tier taxes for correction within... second tier tax imposed with respect to the event shall not be assessed. If the tax has been assessed,...

  8. 26 CFR 53.4961-1 - Abatement of second tier taxes for correction within correction period.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 26 Internal Revenue 17 2014-04-01 2014-04-01 false Abatement of second tier taxes for correction... TAXES Second Tier Excise Taxes § 53.4961-1 Abatement of second tier taxes for correction within... second tier tax imposed with respect to the event shall not be assessed. If the tax has been assessed,...

  9. 26 CFR 53.4961-1 - Abatement of second tier taxes for correction within correction period.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 26 Internal Revenue 17 2012-04-01 2012-04-01 false Abatement of second tier taxes for correction... TAXES Second Tier Excise Taxes § 53.4961-1 Abatement of second tier taxes for correction within... second tier tax imposed with respect to the event shall not be assessed. If the tax has been assessed,...

  10. Guidelines for Legal Reference Service in Correctional Institutions: A Tool for Correctional Administrators.

    ERIC Educational Resources Information Center

    American Correctional Association, College Park, MD.

    This publication has been developed to assist correctional administrators and librarians to comply with recent court mandates on prisoners' rights of access to legal reference services and materials. The Introduction includes some basic suggestions for selecting a location for the law library in a correctional facility, and considerations to be…

  11. The Adult Correctional Education Program of the Massachusetts Department of Correction: A Performance Audit (Senate 1850).

    ERIC Educational Resources Information Center

    Massachusetts State Legislature, Boston. Senate Committee on Post Audit and Oversight.

    A performance audit of the adult correctional education program in Massachusetts resulted in these findings: (1) the department is not adequately carrying out its obligation to educate prison inmates, especially those who are illiterate; (2) the relationship between the department of correction and the division of inmate training and education…

  12. 76 FR 8294 - Technical Correction: Completion of Entry and Entry Summary-Declaration of Value; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOMELAND SECURITY U. S. Customs and Border Protection 19 CFR Part 141 RIN 1515-AD61 (Formerly 1505-AB96) Technical Correction: Completion of Entry and Entry Summary-- Declaration of Value; Correction AGENCY: Customs and...

  13. Correct Me to Tears: The Importance of Knowing the Learner before Correcting Errors.

    ERIC Educational Resources Information Center

    Parrino, Angela

    An advocate of the Natural Approach to second language instruction discusses problems associated with error correction, highlighted in her personal experience when she visited Italy to explore her heritage and use her Italian language skills. After requesting to have her errors corrected by a native-speaking friend, the visitor experienced great…

  14. 28 CFR 35.152 - Jails, detention and correctional facilities, and community correctional facilities.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Jails, detention and correctional facilities, and community correctional facilities. 35.152 Section 35.152 Judicial Administration DEPARTMENT OF JUSTICE NONDISCRIMINATION ON THE BASIS OF DISABILITY IN STATE AND LOCAL GOVERNMENT...

  15. 75 FR 81543 - Additional Rules Regarding Hybrid Retirement Plans; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-28

    ...; Correction AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Correction to a notice of proposed... interest crediting rate''. Guy R. Traynor, Acting Chief, Publications and Regulations Branch, Legal...

  16. Sagittal plane correction in idiopathic scoliosis.

    PubMed

    de Jonge, Tamás; Dubousset, Jean F; Illés, Tamás

    2002-04-01

    Patients with idiopathic scoliosis who had undergone posterior fusion by means of posterior multisegmented hook instrumentation were studied retrospectively. To present the changes in projected thoracic hypokyphosis and the behavior of lumbar lordosis within and below the fusion. Scoliosis is a three-dimensional deformity of the spine. The idiopathic cases usually exhibit a flattening of the sagittal curves, which had further deteriorated when the Harrington technique was used. The consequences included the flat back, angular increase of the lumbar lordosis below the fusion, and low back pain. Previous studies showed no or only moderate correction of thoracic hypokyphosis when using Cotrel-Dubousset instrumentation or its modifications were used. Harrington rod systems resulted in decreased lumbar lordosis in the fusion area and increased lordosis below the fusion. No background data were found concerning the effects of multisegmented hook instrumentation on the lumbar spine within and below the fusion. For this study, 306 patients with idiopathic scoliosis who had undergone posterior spinal fusion with multisegmented hook systems using the derotation maneuver were analyzed after a mean follow-up period of 5 years and 4 months. The coronal plane curvature, the sagittal plane projection of the thoracic kyphosis, and the lumbar lordosis within and below the fusion were evaluated. The average coronal plane correction was 67.1%. Analysis of the sagittal contours demonstrated that the preoperative thoracic hypokyphosis (less than 20 degrees between T4 and T12) increased by an average of 12 degrees, and that 55.1% of hypokyphotic backs were corrected to the normal range (20 degrees to 40 degrees ). In patients with frank lordosis (kyphosis less than 10 degrees ), the degree of correction was higher (average, 16 degrees ), but complete correction was achieved in only 38.5% of the cases. In patients with mild lordosis (kyphosis between 10 degrees and 20 degrees ), the

  17. Quantum Steganography and Quantum Error-Correction

    ERIC Educational Resources Information Center

    Shaw, Bilal A.

    2010-01-01

    Quantum error-correcting codes have been the cornerstone of research in quantum information science (QIS) for more than a decade. Without their conception, quantum computers would be a footnote in the history of science. When researchers embraced the idea that we live in a world where the effects of a noisy environment cannot completely be…

  18. Academic Corrective Action from a Legal Perspective.

    ERIC Educational Resources Information Center

    Collura, Frank J.

    1997-01-01

    In cases of cheating, plagiarism, or violations of the law in dental education, a very high level of due process is required. University counsel can help administrators determine whether an accused student is professionally suited to dentistry by characterizing as many corrective actions as possible as academic under the rubric of "suitability to…

  19. Correction to Cantor et al. (2005)

    ERIC Educational Resources Information Center

    Cantor, James M.; Blanchard, Ray; Robichaud, Lori K.; Christensen, Bruce K.

    2005-01-01

    This paper reports an error in the original article by James M. Cantor, Ray Blanchard, Lori K. Robichaud, and Bruce K. Christensen ("Psychological Bulletin," 2005, Vol. 131, No. 4, pp. 555-568). As a result of an editorial error the article listed the link to online supplemental data incorrectly. The correct URL is provided here. (The following…

  20. Frequency correction device uses digital circuitry

    NASA Technical Reports Server (NTRS)

    Schaefer, D.

    1965-01-01

    Signal acquisition and tracking system covering a wide range of frequencies uses a digital circuit to sample the frequency of an incoming signal and provide correction pulses to the voltage-controlled oscillator. The circuit can also sense the presence of a signal on any one of the input lines.

  1. Effective Temperature Scale and Bolometric Corrections

    NASA Astrophysics Data System (ADS)

    Gray, R.; Murdin, P.

    2000-11-01

    The conversion from an observational quantity, such as the color index or the spectral type, to the effective temperature (Teff) of a star is known as the effective TEMPERATURE SCALE. Bolometric corrections are required in the calculation of the luminosity of a star if the flux from the star has not been observed over the entire ELECTROMAGNETIC SPECTRUM....

  2. Matrix Encoding For Correction Of Errors

    NASA Technical Reports Server (NTRS)

    Dotson, Ronald S.

    1991-01-01

    Method of matrix encoding and associated decoding provides for correction of errors in digital data recorded on magnetic tape. Intended specifically for use with commercial control circuit board and associated software making it possible to use video cassette recorder as backup for hard-disk memory of personal computer.

  3. 76 FR 6690 - Highway Systems; Technical Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-08

    ... Federal Highway Administration 23 CFR Part 470 RIN 2125-AF35 Highway Systems; Technical Correction... on the National Highway System and the Dwight D. Eisenhower System of Interstate and Defense Highways... agreement as future Interstate routes must be constructed to meet Interstate Highway System standards...

  4. Gain Shift Corrections at Chi-Nu

    SciTech Connect

    Brown, Tristan Brooks; Devlin, Matthew James

    2016-08-30

    Ambient conditions have the potential to cause changes in liquid scintillator detector gain that vary with time and temperature. These gain shifts can lead to poor resolution in both energy as well as pulse shape discrimination. In order to correct for these shifts in the Chi-Nu high energy array, a laser system has been developed for calibration of the pulse height signals.

  5. Partially Correct Constructs Illuminate Students' Inconsistent Answers

    ERIC Educational Resources Information Center

    Ron, Gila; Dreyfus, Tommy; Hershkowitz, Rina

    2010-01-01

    We present a view of knowledge construction processes, focusing on partially correct constructs. Motivated by unexpected and seemingly inconsistent quantitative data based on the written reports of students working on an elementary probability task, we analyze in detail the knowledge construction processes of a representative student. We show how…

  6. 40 CFR 192.04 - Corrective action.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Corrective action. If the groundwater concentration limits established for disposal sites under provisions of..., in any case, as a minimum shall: (a) Conform with the groundwater provisions of § 192.02(c)(3), and (b) Clean up groundwater in conformance with subpart B, modified as appropriate to apply to the...

  7. 76 FR 75914 - Sunshine Act Meetings; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-05

    ... From the Federal Register Online via the Government Publishing Office NATIONAL COUNCIL ON DISABILITY Sunshine Act Meetings; Correction SUMMARY: The National Council on Disability published a notice... Disability (NCD) will meet by phone on Thursday, December 8, 2011, 1 p.m.-6 p.m., ET. In the same Federal...

  8. 76 FR 12373 - Sunshine Act Meetings; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-07

    ... From the Federal Register Online via the Government Publishing Office NATIONAL COUNCIL ON DISABILITY Sunshine Act Meetings; Correction SUMMARY: The National Council on Disability published a notice in the Federal Register of February 28, 2011, concerning a meeting of the Council. This document...

  9. 78 FR 32165 - Commercial Radio Operators; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-29

    ... COMMISSION 47 CFR Part 0 Commercial Radio Operators; Correction AGENCY: Federal Communication Commission... rules concerning radio operator licenses for maritime and aviation in order to reduce administrative...) Administers the Commission's commercial radio operator program (part 13 of this chapter); the Commission's...

  10. 26 CFR 53.4958-7 - Correction.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... provides examples illustrating correction. (b) Form of correction—(1) Cash or cash equivalents. Except as... only by making a payment in cash or cash equivalents, excluding payment by a promissory note, to the... section, and as a result, the disqualified person effectively transferred property other than cash or...

  11. 75 FR 5243 - OST Technical Corrections

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-02

    ...DOT is making corrections to amendments to a number of its regulations that were published in the Federal Register on June 12, 2008 (73 FR 33326-30) to reflect reorganization of some elements of DOT and the move of DOT's Headquarters site in Washington, DC.

  12. Consciousness-Raising, Error Correction and Proofreading

    ERIC Educational Resources Information Center

    O'Brien, Josephine

    2015-01-01

    The paper discusses the impact of developing a consciousness-raising approach in error correction at the sentence level to improve students' proofreading ability. Learners of English in a foreign language environment often rely on translation as a composing tool and while this may act as a scaffold and provide some support, it frequently leads to…

  13. Correcting an analysis of variance for clustering.

    PubMed

    Hedges, Larry V; Rhoads, Christopher H

    2011-02-01

    A great deal of educational and social data arises from cluster sampling designs where clusters involve schools, classrooms, or communities. A mistake that is sometimes encountered in the analysis of such data is to ignore the effect of clustering and analyse the data as if it were based on a simple random sample. This typically leads to an overstatement of the precision of results and too liberal conclusions about precision and statistical significance of mean differences. This paper gives simple corrections to the test statistics that would be computed in an analysis of variance if clustering were (incorrectly) ignored. The corrections are multiplicative factors depending on the total sample size, the cluster size, and the intraclass correlation structure. For example, the corrected F statistic has Fisher's F distribution with reduced degrees of freedom. The corrected statistic reduces to the F statistic computed by ignoring clustering when the intraclass correlations are zero. It reduces to the F statistic computed using cluster means when the intraclass correlations are unity, and it is in between otherwise. A similar adjustment to the usual statistic for testing a linear contrast among group means is described.

  14. 26 CFR 53.4958-7 - Correction.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 26 Internal Revenue 17 2013-04-01 2013-04-01 false Correction. 53.4958-7 Section 53.4958-7 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) MISCELLANEOUS EXCISE TAXES (CONTINUED) FOUNDATION AND SIMILAR EXCISE TAXES Second Tier Excise Taxes § 53.4958-7...

  15. 26 CFR 53.4958-7 - Correction.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 26 Internal Revenue 17 2012-04-01 2012-04-01 false Correction. 53.4958-7 Section 53.4958-7 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) MISCELLANEOUS EXCISE TAXES (CONTINUED) FOUNDATION AND SIMILAR EXCISE TAXES Second Tier Excise Taxes § 53.4958-7...

  16. 26 CFR 53.4958-7 - Correction.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 26 Internal Revenue 17 2014-04-01 2014-04-01 false Correction. 53.4958-7 Section 53.4958-7 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) MISCELLANEOUS EXCISE TAXES (CONTINUED) FOUNDATION AND SIMILAR EXCISE TAXES Second Tier Excise Taxes § 53.4958-7...

  17. Academic Corrective Action from a Legal Perspective.

    ERIC Educational Resources Information Center

    Collura, Frank J.

    1997-01-01

    In cases of cheating, plagiarism, or violations of the law in dental education, a very high level of due process is required. University counsel can help administrators determine whether an accused student is professionally suited to dentistry by characterizing as many corrective actions as possible as academic under the rubric of "suitability to…

  18. QCD Corrections in Transversely Polarized Scattering

    SciTech Connect

    Vogelsang,W.

    2008-10-06

    We discuss two recent calculations of higher-order QeD corrections to scattering of transversely polarized hadrons. A basic concept underlying much of the theoretical description of high-energy hadronic scattering is the factorization theorem, which states that large momentum-transfer reactions may be factorized into long-distance pieces that contain information on the structure of the nucleon in terms of its parton densities, and parts that are short-distance and describe the hard interactions of the partons. Two crucial points are that on the one hand the long-distance contributions are universal, i.e., they are the same in any inelastic reaction under consideration, and that on the other hand the short-distance pieces depend only on the large scales related to the large momentum transfer in the overall reaction and, therefore, may be evaluated using QCD perturbation theory. The lowest order for the latter can generally only serve to give a rough description of the reaction under study. It merely captures the main features, but does not usually provide a quantitative understanding. The first-order ('next-to-leading order' (NLO)) corrections are generally indispensable in order to arrive at a firmer theoretical prediction for hadronic cross sections, and in some cases even an all-order resummation of large perturbative corrections is needed. In the present paper we win discuss two calculations [1, 2] of higher-order QeD corrections to transversely polarized scattering.

  19. Off-Angle Iris Correction Methods

    SciTech Connect

    Santos-Villalobos, Hector J; Thompson, Joseph T; Karakaya, Mahmut; Boehnen, Chris Bensing

    2016-01-01

    In many real world iris recognition systems obtaining consistent frontal images is problematic do to inexperienced or uncooperative users, untrained operators, or distracting environments. As a result many collected images are unusable by modern iris matchers. In this chapter we present four methods for correcting off-angle iris images to appear frontal which makes them compatible with existing iris matchers. The methods include an affine correction, a retraced model of the human eye, measured displacements, and a genetic algorithm optimized correction. The affine correction represents a simple way to create an iris image that appears frontal but it does not account for refractive distortions of the cornea. The other method account for refraction. The retraced model simulates the optical properties of the cornea. The other two methods are data driven. The first uses optical flow to measure the displacements of the iris texture when compared to frontal images of the same subject. The second uses a genetic algorithm to learn a mapping that optimizes the Hamming Distance scores between off-angle and frontal images. In this paper we hypothesize that the biological model presented in our earlier work does not adequately account for all variations in eye anatomy and therefore the two data-driven approaches should yield better performance. Results are presented using the commercial VeriEye matcher that show that the genetic algorithm method clearly improves over prior work and makes iris recognition possible up to 50 degrees off-angle.

  20. 9 CFR 417.3 - Corrective actions.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 2 2011-01-01 2011-01-01 false Corrective actions. 417.3 Section 417.3 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... review to determine the acceptability of the affected product for distribution; (3) Take action, when...