WorldWideScience

Sample records for profile chart ylb

  1. On the Use of the K-Chart for Phase II Monitoring of Simple Linear Profiles

    OpenAIRE

    Gani, Walid; Limam, Mohamed

    2013-01-01

    Control charts for monitoring linear profiles are used to control quality processes which are characterized by a relationship between a response variable and one or more explanatory variables. In the literature, the majority of control charts deal with phase II analysis of linear profiles, where the objective is to assess the performance of control charts in detecting shifts in the parameters of linear profiles. Recently, the kernel distance-based multivariate control chart, also known as the...

  2. CONTROL CHART FOR MONITORING NONPARAMETRIC PROFILES WITH ARBITRARY DESIGN

    National Research Council Canada - National Science Library

    Peihua Qiu; Changliang Zou

    2010-01-01

    .... It is widely used in industry for the purpose of quality control of a process. Existing NPM approaches require the assumption that design points within a profile are deterministic, and are unchanged from one profile to another...

  3. Student Competency Profile Chart: A Competency Based Vocational Education Instrument.

    Science.gov (United States)

    Martell, John L.

    This document defines, describes usage of, and provides samples of student competency profiles being used in 17 vocational programs at Rutland Area Vocational-Technical Center in Rutland, Vermont. The profiles cover the following programs: auto body, auto mechanics, business/data processing, cabinetmaking, carpentry/masonry, culinary arts,…

  4. Profile Similarity Metrics Increase Personality Scale Validity (Briefing Charts)

    Science.gov (United States)

    2016-04-15

    unless so designated by other documentation. Personality Tests • Modest scale validity & minor adverse impact • Scale scores often computed as the mean ...Profile Similarity Metrics Increase Personality Scale Validity Peter J. Legree, Robert N. Kilcullen U.S. Army Research Institute for the Behavioral... Personality Tests & Distance Metrics • Conventional and distance scores are redundant: r = -1.00 3 Fitness Motivation Rating Conventional Score Key Distance

  5. New fuzzy EWMA control charts for monitoring phase II fuzzy profiles

    Directory of Open Access Journals (Sweden)

    Ghazale Moghadam

    2016-01-01

    Full Text Available In many quality control applications, the quality of a process or product is explained by the relationship between response variable and one or more explanatory variables, called a profile. In this paper, a new fuzzy EWMA control chart for phase II fuzzy profile monitoring is proposed. To this end, we extend EWMA control charts to its equivalent Fuzzy type and then implement fuzzy ranking methods to determine whether the process fuzzy profile is under or out of control. The proposed method is capable of identifying small changes in process under condition of process profile explaining parameters vagueness, roughness and uncertainty. Determining the source of changes, this method provides us with the possibility of recognizing the causes of process transition from stable mode, removing these causes and restoring the process stable mode.

  6. MIXMAX charts

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For attribute data with (very) small failure rates control charts based on subsequent groups of r failure times, for some r >= 1, have been shown to be attractive. This especially holds for charts which stop once the maximum (MAX) of such a group is sufficiently small, as this choice allows a

  7. Vitamin Chart

    Science.gov (United States)

    ... Staying Safe Videos for Educators Search English Español Vitamin Chart KidsHealth / For Teens / Vitamin Chart Print en español Tabla de las vitaminas Type Benefits Sources Quantity Vitamin A Vitamin A prevents eye problems, promotes a ...

  8. CUMIN charts

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.

    Abstract. Classical control charts are very sensitive to deviations from normality. In this respect, nonparametric charts form an attractive alternative. However, these often require considerably more Phase I observations than are available in practice. This latter problem can be solved by

  9. Radar Chart

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Radar Chart collection is an archived product of summarized radar data. The geographic coverage is the 48 contiguous states of the United States. These hourly...

  10. Chart Series

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Centers for Medicare and Medicaid Services (CMS) offers several different Chart Series with data on beneficiary health status, spending, operations, and quality...

  11. MINDCUMIN charts

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.

    A serious drawback of classical control charts is their high sensitivity to deviations from normality. By now, many alternative procedures, often of a nonparametric nature, have been proposed. A danger with these competitors is that unrealistically large Phase I samples might be needed. This can be

  12. Self adapting control charts

    OpenAIRE

    Albers, Willem/Wim; Kallenberg, W. C. M.

    2004-01-01

    When the distributional form of the observations differs from normality, standard control charts are often seriously in error. Such model errors can be avoided with (modified) nonparametric control charts. Unfortunately, these control charts suffer from large stochastic errors due to estimation. In between are so called parametric control charts. All three of them are discussed in this paper as well as a combined chart, which chooses one of the three control charts according to the appropriat...

  13. Clinical significance of coryneform Gram-positive rods from blood identified by MALDI-TOF mass spectrometry and their susceptibility profiles - a retrospective chart review.

    Science.gov (United States)

    Mushtaq, Ammara; Chen, Derrick J; Strand, Gregory J; Dylla, Brenda L; Cole, Nicolynn C; Mandrekar, Jayawant; Patel, Robin

    2016-07-01

    With the advent of matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS), most Gram-positive rods (GPRs) are readily identified; however, their clinical relevance in blood cultures remains unclear. Herein, we assessed the clinical significance of GPRs isolated from blood and identified in the era of MALDI-TOF MS. A retrospective chart review of patients presenting to the Mayo Clinic, Rochester, MN, from January 1, 2013, to October 13, 2015, was performed. Any episode of a positive blood culture for a GPR was included. We assessed the number of bottles positive for a given isolate, time to positivity of blood cultures, patient age, medical history, interpretation of culture results by the healthcare team and whether infectious diseases consultation was obtained. We also evaluated the susceptibility profiles of a larger collection of GPRs tested in the clinical microbiology laboratory of the Mayo Clinic, Rochester, MN from January 1, 2013, to October 31, 2015. There were a total of 246 GPRs isolated from the blood of 181 patients during the study period. 56% (n = 101) were deemed contaminants by the healthcare team and were not treated; 33% (n = 59) were clinically determined to represent true bacteremia and were treated; and 8% (n = 14) were considered of uncertain significance, with patients prescribed treatment regardless. Patient characteristics associated with an isolate being treated on univariate analysis included younger age (P = 0.02), identification to the species level (P = 0.02), higher number of positive blood culture sets (P blood culture sets (P = 0.0005) and lower time to positivity (P = 0.03) were associated with an isolate being treated. 100, 83, 48 and 34% of GPRs were susceptible to vancomycin, meropenem, penicillin and ceftriaxone, respectively. Copyright © 2016 Elsevier Inc. All rights reserved.

  14. Excel 2007 Charts

    CERN Document Server

    Walkenbach, John

    2008-01-01

    Excel, the top number-crunching tool, now offers a vastly improved charting function to help you give those numbers dimension and relativity. John Walkenbach, a.k.a. Mr. Spreadsheet, clearly explains all these charting features and shows you how to choose the right chart for your needs. You'll learn to modify data within the chart, deal with missing data, format your chart, use trend lines, construct "impossible" charts, create charts from pivot tables, dress them up with graphics, and more. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

  15. Prenatal Genetic Testing Chart

    Science.gov (United States)

    ... Advocacy For Patients About ACOG Prenatal Genetic Testing Chart (Infographic) Home For Patients Search FAQs Prenatal Genetic Testing Chart (Infographic) PFSI010 ››› Weeks 1–4 Weeks 5–8 ...

  16. Reading charts in ophthalmology.

    Science.gov (United States)

    Radner, W

    2017-08-01

    A new generation of logarithmic reading charts has sparked interest in standardized reading performance analyses. Such reading charts have been developed according to the standards of the International Council of Ophthalmology. The print size progression in these calibrated charts is in accordance with the mathematical background of EN ISO 8596. These reading charts are: the Bailey-Lovie Word Reading Chart, the Colenbrander English Continuous Text Near Vision Cards, the Oculus Reading Probe II, the MNREAD Charts, the SKread Charts, and the RADNER Reading Charts. The test items used for these reading charts differ among the charts and are standardized to various extents. The Bailey-Lovie Charts, MNREAD Charts, SKread Charts, and RADNER Charts are also meant to measure reading speed and allow determination of further reading parameters such as reading acuity, reading speed based on reading acuity, critical print size, reading score, and logMAR/logRAD ratio. Such calibrated reading charts have already provided valuable insights into the reading performance of patients in many research studies. They are available in many languages and thus facilitate international communication about near visual performance. In the present review article, the backgrounds of these modern reading charts are presented, and their different levels of test-item standardization are discussed. Clinical research studies are mentioned, and a discussion about the immoderately high number of reading acuity notations is included. Using the logReading Acuity Determination ([logRAD] = reading acuity equivalent of logMAR) measure for research purposes would give reading acuity its own identity as a standardized reading parameter in ophthalmology.

  17. A dispersion control chart

    NARCIS (Netherlands)

    Riaz, M.

    2008-01-01

    The study proposes a Shewhart-type control chart, namely Q chart, based on inter-quartile range, for monitoring changes (especially of moderate and large amounts which is major concern of Shewhart-type control charts) in process dispersion assuming normality of quality characteristic to be

  18. Fractional smith chart theory

    KAUST Repository

    Shamim, Atif

    2011-03-01

    For the first time, a generalized Smith chart is introduced here to represent fractional order circuit elements. It is shown that the standard Smith chart is a special case of the generalized fractional order Smith chart. With illustrations drawn for both the conventional integer based lumped elements and the fractional elements, a graphical technique supported by the analytical method is presented to plot impedances on the fractional Smith chart. The concept is then applied towards impedance matching networks, where the fractional approach proves to be much more versatile and results in a single element matching network for a complex load as compared to the two elements in the conventional approach. © 2010 IEEE.

  19. prepare_taxa_charts

    Science.gov (United States)

    Lakhujani, Vijay; Badapanda, Chandan

    2017-06-01

    QIIME (Quantitative Insights Into Microbial Ecology) is one of the most popular open-source bioinformatics suite for performing metagenome, 16S rRNA amplicon and Internal Transcribed Spacer (ITS) data analysis. Although, it is very comprehensive and powerful tool, it lacks a method to provide publication ready taxonomic pie charts. The script plot_taxa_summary . py bundled with QIIME generate a html file and a folder containing taxonomic pie chart and legend as separate images. The images have randomly generated alphanumeric names. Therefore, it is difficult to associate the pie chart with the legend and the corresponding sample identifier. Even if the option to have the legend within the html file is selected while executing plot_taxa_summary . py , it is very tedious to crop a complete image (having both the pie chart and the legend) due to unequal image sizes. It requires a lot of time to manually prepare the pie charts for multiple samples for publication purpose. Moreover, there are chances of error while identifying the pie chart and legend pair due to random alphanumeric names of the images. To bypass all these bottlenecks and make this process efficient, we have developed a python based program, prepare_taxa_charts . py , to automate the renaming, cropping and merging of taxonomic pie chart and corresponding legend image into a single, good quality publication ready image. This program not only augments the functionality of plot_taxa_summary . py but is also very fast in terms of CPU time and user friendly.

  20. CTD and sound speed profile data acquired in support of hydrographic multibeam surveys to meet NOAA/NOS, Office of Coast Survey charting requirements

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Multiple sensors are used to acquire sound speed profiles in the survey areas assigned to the ships and navigation response teams. Some vessels have CTDs and acquire...

  1. CDC Child Growth Charts

    Data.gov (United States)

    U.S. Department of Health & Human Services — CDC child growth charts consist of a series of percentile curves that illustrate the distribution of selected body measurements in U.S. children. Pediatric growth...

  2. Great Lakes Ice Charts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Charts show ice extent and concentration three times weekly during the ice season, for all lakes except Ontario, from the 1973/74 ice season through the 2001/2002...

  3. Barograms / Barograph Charts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Barograms are weekly rectangular charts recording barometric pressure at a given station. The barograph is an instrument that makes a continuous pen and ink trace of...

  4. Smart Book Charts

    Science.gov (United States)

    Chinnapongse, Ronald L.

    2015-01-01

    Smart book charts for TPSM: Heatshield for Extreme Entry Environment Technology (HEEET), Conformal Ablative TPS (CA-TPS), 3D Woven Multifunctional Ablative TPS (3D MAT), and Adaptable, Deployable, Entry and Placement Technology (ADEPT).

  5. Understanding Charts and Graphs.

    Science.gov (United States)

    1987-07-28

    Understanding Charts and Graphs Stephen M. Kosslyn Harvard University jccG3ssio For ’ Running head : Understanding graphs/ 1236 illia JaCodHas...concepts. That is, a "compliance class’ is in fact something in a reader’s head . The reader must know both the individual concepts and the general...above. "’ wt~ -.. ;-.4-v, Understanding charts and graphs -54- References Bertin, J. (1983). Semiology of Graphs (Trans. W. J. Berg). Madison, WI

  6. On multivariate control charts

    OpenAIRE

    Frisén, Marianne

    2011-01-01

    Industrial production requires multivariate control charts to enable monitoring of several components. Recently there has been an increased interest also in other areas such as detection of bioterrorism, spatial surveillance and transaction strategies in finance. In the literature, several types of multivariate counterparts to the univariate Shewhart, EWMA and CUSUM methods have been proposed. We review general approaches to multivariate control chart. Suggestions are made on the special chal...

  7. Tukey's control chart.

    Science.gov (United States)

    Alemi, Farrokh

    2004-01-01

    This article presents the idea of Tukey's Control Chart, a method of analyzing data based on the concepts developed by John Tukey for calculation of confidence intervals for medians. The procedure is simple to implement (no need to calculate averages or standard deviations); it does not assume any distribution of the data; it can be applied to small data sets; and it is robust and not affected by occasional unusual observations (outliers). The article provides examples of the application of Tukey's Control Chart to both patients' lifestyle management and business process improvement.

  8. Minimum control charts

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.

    Standard control charts are very sensitive to estimation effects and/or deviations from normality. Hence a program has been carried out to remedy these problems. This is quite adequate in most circumstances, but not in all. In the present paper, the remaining complication is attacked: what to do if

  9. Growth Charts (For Parents)

    Science.gov (United States)

    ... January 2014 previous 1 • 2 • 3 • 4 For Teens For Kids For Parents MORE ON THIS TOPIC What Is a Growth Disorder? Body Mass Index (BMI) Charts Failure to Thrive Preparing Your Child for Visits to the Doctor Your Child's Growth Growth Disorders Feeling Too Tall or Too Short What a Pain! Kids and ...

  10. Synthetic growth reference charts

    NARCIS (Netherlands)

    Hermanussen, Michael; Stec, Karol; Aßmann, Christian; Meigen, Christof; Van Buuren, Stef|info:eu-repo/dai/nl/074806777

    2016-01-01

    Objectives: To reanalyze the between-population variance in height, weight, and body mass index (BMI), and to provide a globally applicable technique for generating synthetic growth reference charts. Methods: Using a baseline set of 196 female and 197 male growth studies published since 1831, common

  11. Customised symphysio fundal height charts.

    Science.gov (United States)

    Shamawarna, K H B; Goonewardene, I M R; Perera, Y A G

    2012-12-01

    To evaluate the feasibility, applicability and the value of customised symphysio fundal height (SFH) charts developed for women of Indian origin in the United Kingdom (UK: CSFH - In chart) and women of African origin in the UK (CSFH - Af chart) in detecting fetal growth restriction and predicting low birth weight (LBW) of the neonate in a Lankan population, and to compare these results with the results obtained from the SFH chart currently used in Sri Lanka (FHB chart) and another SFH chart which uses a range of plus or minus 2-3 cm of the value of the gestational age in weeks as the reference range (GA ± 2 to 3 cm chart). Pregnant women (n = 416) with confirmed periods of gestation (POG) of customised charts the GA ± 2 to 3 cm chart was better than the FHB chart. Until a customised SFH chart is developed for Sri Lanka, the CSFH - In chart or the GA ± 2 to 3 cm chart should be used for antenatal monitoring of fetal growth.

  12. NOAA Raster Navigational Charts (RNC)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA, National Ocean Service, Office of Coast Survey, Marine Chart Division is responsible to build and maintain a suite of more than 1000 nautical charts that are...

  13. Weighing Rain Gauge Recording Charts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Weighing rain gauge charts record the amount of precipitation that falls at a given location. The vast majority of the Weighing Rain Gauge Recording Charts...

  14. A process variability control chart

    NARCIS (Netherlands)

    Riaz, M.; Does, R.J.M.M.

    2009-01-01

    In this study a Shewhart type control chart namely the Vt chart, is proposed for improvedmonitoring of the process variability of a quality characteristic of interest Y . The proposed control chart is based on the ratio type estimator of the variance using a single auxiliary variable X. It is

  15. A process variability control chart

    OpenAIRE

    Riaz, M.; Does, R.J.M.M.

    2009-01-01

    In this study a Shewhart type control chart namely the Vt chart, is proposed for improvedmonitoring of the process variability of a quality characteristic of interest Y . The proposed control chart is based on the ratio type estimator of the variance using a single auxiliary variable X. It is assumed that (Y, X) follows a bivariate normal distribution. The design structure of the Vt chart is developed for Phase-I quality control and its comparison is made with those of the S2 chart (a well-kn...

  16. Neurofibromatosis type 1 growth charts.

    Science.gov (United States)

    Clementi, M; Milani, S; Mammi, I; Boni, S; Monciotti, C; Tenconi, R

    1999-12-03

    Growth abnormalities such as macrocephaly and short stature have been described and are considered a consistent finding in neurofibromatosis type 1 (NF1), one of the most common autosomal dominant disorders in man. We present here a clinical study on the growth profile of a sample of NF1 patients collected through a population-based registry that covers three contiguous regions of North-East Italy (NEI-NF Registry). Auxometric traits of 528 NF1 patients have been measured with the aim of drawing growth charts for height, weight, and head circumference (OFC). Height velocity charts were based on a subset of 143 children who underwent multiple measurements. No differences in height were apparent between NF1 and normal subjects up to age 7 (girls) and 12 (boys) years; subsequently, the 50th centile of NF1 subjects tends to overlap with the 25th centile of normal subjects, and the 3rd centile is much lower in NF1 subjects than in normal subjects, mainly during adolescence. The negatively skewed distribution of height seems to indicate that height growth impairment affects only a proportion of NF1 subjects; height growth impairment does not seem related to disease severity. As for weight, our data suggest that slight overweight is a characteristic of adult NF1 subjects (mainly among males), independent of disease severity. Height growth velocity is normal during childhood for both sexes, whereas the pubertal spurt is slightly anticipated and reduced in NF1 boys but not in girls. Our data confirm previous observations that macrocrania affects most NF1 subjects; the shape of the head growth curve is similar in NF1 and normal girls, whereas NF1 boys present an OFC pubertal growth spurt much more pronounced and delayed than normal boys. The disproportion between OFC and height seems to be related to disease severity in boys but not in girls. Growth charts presented here can be useful in neurofibromatosis clinics for the identification of the effects of secondary growth

  17. A retrospective chart review of the clinical and psychosocial profile of psychotic adolescents with co-morbid substance use disorders presenting to acute adolescent psychiatric services at Tygerberg Hospital

    Directory of Open Access Journals (Sweden)

    Anusha Lachman

    2012-05-01

    Full Text Available Background. A large number of adolescents meet criteria for ‘dual diagnosis’ (a psychiatric disorder plus co-morbid substance use disorder (SUD, which prolongs treatment response and complicates intervention strategies. The current service model in Cape Town divides the care of such patients into psychiatric treatment and a separate substance use intervention. Child and adolescent mental health services face the challenge of high rates of readmission of adolescents into psychiatric facilities before utilisation of community-based substance abuse services. Objective. There is a scarcity of available treatment guidelines for dual-diagnosis adolescents, and a lack of systematically documented epidemiological and clinical data in South African adolescent populations. Method. A retrospective chart review of adolescent psychiatric admissions to the Tygerberg Adolescent Psychiatric Unit during 2010 was conducted. Relevant epidemiological, clinical and demographic data for those presenting with a dual diagnosis (specifically psychotic disorders and SUD was recorded. Results. Results suggest a high prevalence of SUD among adolescents presenting with a first-episode psychosis. Statistically significant correlations with lower levels of education were found in those with ongoing substance abuse (specifically cannabis and methamphetamine, and a significant relationship between choice of debut drug and ongoing drug use was also demonstrated. Risk factors for SUD (psychosocial adversities, childhood trauma, family and community exposure to substances, early debut drug ages, risky sexual behaviours, and clinical psychiatric profiles of adolescents with dual diagnosis are described. Conclusions. This cohort had an enhanced risk as a result of genetic vulnerability and environmental availability of substances, and the findings emphasise the differences in presentation, choice of drugs of abuse and psychosocial difficulties of adolescents with a dual

  18. CHARTE D'AUDIT INTERNE

    International Development Research Centre (IDRC) Digital Library (Canada)

    sblanchard

    CRDI). CHARTE D'AUDIT INTERNE. Mars 2015. 2. Assurances et conseils afin de soutenir le développement par l'innovation. La présente charte établit l'objet, le caractère indépendant et la portée de la fonction d'audit.

  19. Analytical laboratory quality control charting

    Energy Technology Data Exchange (ETDEWEB)

    O' Bryan, Ervin F.

    2001-06-11

    In life the importance of setting goals is stressed. The desired end result must be envisioned to chart a path and determine indicators to provide feedback on the process. Quality does not happen by accident but is achieved through a constant process of setting goals, process development, monitoring process indicators, fine tuning the process, and achieving results. These goals are to be focused and clearly measurable. In industry and life the setting of goals with clear process indicators is often difficult because of the variable end result and scarcity of measurements. Laboratories are fortunate in that they have a plethora of measurements with known or desired end results (controls) to monitor the process and give instantaneous feedback on quality. A key quality tool used by the laboratory to monitor and evaluate the lab processes is control charting. When properly utilized Quality Control (QC) Charts allow labs to be proactive in addressing problems rather than reactive. Several methods are available for control charting and some are listed in the references/information sources. The content for this paper is based on the control-charting program utilized at the Department of Energy's Fernald site. This control-charting program has specific areas of emphasis, simple charts, trend analyses, and effective follow-up.

  20. Google Charts Testing | IDRC - International Development Research ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Google Charts Testing. The following item is a demo of Google GeoChart. Please note that geo chart can only recognize country name or city name rather than location or address (that is google my map's expertise). Additionally, Geo chart does support title and legend. To render geo chart properly, please get a ...

  1. MAX-EWMA CHART FOR AUTOCORRELATED PROCESSES (MEWMAP CHART)

    National Research Council Canada - National Science Library

    Thaga, K; Yadavalli, V.S.S

    2012-01-01

    ENGLISH ABSTRACT: This paper proposes an exponentially weighted moving average (EWMA) control chart that is capable of detecting changes in both process mean and standard deviation for autocorrelated data...

  2. Safe Minimum Internal Temperature Chart

    Science.gov (United States)

    ... JSR 286) Actions ${title} Loading... Safe Minimum Internal Temperature Chart Safe steps in food handling, cooking, and ... from other foods. Cook —Cook to the right temperature. Chill —Refrigerate food promptly. Cook all food to ...

  3. Charting Transnational Native American Studies

    Directory of Open Access Journals (Sweden)

    Hsinya Huang

    2012-06-01

    Full Text Available Introduction to the Special Forum entitled "Charting Transnational Native American Studies: Aesthetics, Politics, Identity," edited by Hsinya Huang, Philip J. Deloria, Laura M. Furlan, and John Gamber

  4. NOAA Electronic Navigational Charts (ENC)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Office of Coast Survey (OCS) has been involved in the development of a NOAA Electronic Navigational Chart (NOAA ENC) suite to support the marine transportation...

  5. Inland Electronic Navigational Charts (IENC)

    Data.gov (United States)

    Army Corps of Engineers, Department of the Army, Department of Defense — These Inland Electronic Navigational Charts (IENCs) were developed from available data used in maintenance of Navigation channels. Users of these IENCs should be...

  6. Multivariate Statistical Process Control Charts: An Overview

    OpenAIRE

    Bersimis, Sotiris; Psarakis, Stelios; Panaretos, John

    2006-01-01

    In this paper we discuss the basic procedures for the implementation of multivariate statistical process control via control charting. Furthermore, we review multivariate extensions for all kinds of univariate control charts, such as multivariate Shewhart-type control charts, multivariate CUSUM control charts and multivariate EWMA control charts. In addition, we review unique procedures for the construction of multivariate control charts, based on multivariate statistical techniques such as p...

  7. Flowcharting with D-charts

    Science.gov (United States)

    Meyer, D.

    1985-01-01

    A D-Chart is a style of flowchart using control symbols highly appropriate to modern structured programming languages. The intent of a D-Chart is to provide a clear and concise one-for-one mapping of control symbols to high-level language constructs for purposes of design and documentation. The notation lends itself to both high-level and code-level algorithmic description. The various issues that may arise when representing, in D-Chart style, algorithms expressed in the more popular high-level languages are addressed. In particular, the peculiarities of mapping control constructs for Ada, PASCAL, FORTRAN 77, C, PL/I, Jovial J73, HAL/S, and Algol are discussed.

  8. 7 CFR 51.2276 - Color chart.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Color chart. 51.2276 Section 51.2276 Agriculture... Standards for Shelled English Walnuts (Juglans Regia) General § 51.2276 Color chart. The color chart (USDA Walnut Color Chart) to which reference is made in §§ 51.2281 and 51.2282 illustrates the four shades of...

  9. The ICS International Chronostratigraphic Chart

    NARCIS (Netherlands)

    Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X.

    2013-01-01

    The International Commission on Stratigraphy (ICS) has a long tradition of producing international charts that communicate higher-order divisions of geological time and actual knowledge on the absolute numerical ages of their boundaries. The primary objective of ICS is to define precisely a global

  10. AMDIS and CHART update. 1

    Energy Technology Data Exchange (ETDEWEB)

    Murakami, I.; Kato, T. [National Inst. for Fusion Science, Toki, Gifu (Japan); Igarashi, A. [Miyazaki Univ., Miyazaki (JP)] [and others

    2002-10-01

    A working group for updating atomic and molecular collision data in the NIFS database AMDIS (electron scattering) and CHART (ion scattering) has been organized. This group has searched and reviewed literatures for collecting relevant atomic data with are to be included into the database. This is a summary report of the activities of this working group. (author)

  11. A robust Xbar control chart

    NARCIS (Netherlands)

    Schoonhoven, M.; Does, R.J.M.M.

    2013-01-01

    This article studies alternative standard deviation estimators that serve as a basis to determine the control chart limits used for real-time process monitoring (phase II). Several existing (robust) estimation methods are considered. In addition, we propose a new estimation method based on a phase I

  12. Review of "Charting New Territory"

    Science.gov (United States)

    Trujillo, Tina

    2011-01-01

    "Charting New Territory: Tapping Charter Schools to Turn Around the Nation's Dropout Factories" argues for a more prominent role for charter operators in turning around perennially low-performing high schools. However, the report's ultimate findings and conclusions are out of proportion to the strength of the research evidence on school…

  13. A comparison of phase I control charts

    Directory of Open Access Journals (Sweden)

    Coelho, Margarethe

    2015-08-01

    Full Text Available A carefully done Phase I analysis is a vital part of an overall statistical process control and monitoring regime. Distribution-free control charts can play a useful role in this analysis, as a parametric model assumption often cannot be adequately verified. The performance of two distribution-free charts for the location – the mean-rank and the median chart – are compared in this paper. For benchmarking reasons, the parametric -chart is included in the comparisons. It is seen that the distribution-free charts are in-control robust, whereas the -chart is not, and they both perform similarly to the -chart for normally distributed data. However, for non-normal data, they both outperform the -chart. The results provide evidence in favour of using distribution-free Phase I charts in practice. Concluding remarks and suggestions for future research are given.

  14. Air Emissions Sources, Charts and Maps

    Data.gov (United States)

    U.S. Environmental Protection Agency — Air Emissions provides (1) interactive charts supporting national, state, or county charts, (2) county maps of criteria air pollutant emissions for a state, and (3)...

  15. NOAA Seamless Raster Navigational Charts (RNC)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The NOAA Seamless Raster Chart Server provides a seamless collarless mosaic of the NOAA Raster Navigational Charts (RNC). The RNC are a collection of approximately...

  16. 7 CFR 51.2946 - Color chart.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Color chart. 51.2946 Section 51.2946 Agriculture... Standards for Grades of Walnuts in the Shell General § 51.2946 Color chart. The color chart (USDA Walnut Color Chart) to which reference is made in §§ 51.2948, 51.2949, 51.2950, 51.2954, and 51.2963...

  17. Statistical Tests for Comparing Pareto Charts

    Directory of Open Access Journals (Sweden)

    Przemyslaw Grzegorzewski

    2012-09-01

    Full Text Available The Pareto chart is one of the most useful of the "magnificent seven", i.e. of the seven major SPC problem-solving tools. Sometimes a decision-maker is interested whether two Pareto charts corresponding to different processes differs significantly. In the present paper a new statistical test for comparing Pareto charts is suggested.

  18. Progress in the technology of nautical charting

    Digital Repository Service at National Institute of Oceanography (India)

    Joseph, A.

    the geographical information pertaining to the sea and the coastal water bodies was recorded on paper chart, on a miniature scale, for ready use by the mariners for marine navigational applications, and therefore the chart came to be known as "nautical chart...

  19. A Robust Control Chart for Monitoring Dispersion

    OpenAIRE

    Zhou, Maoyuan; Geng, Wei

    2013-01-01

    Most robust control charts in the literature are for monitoring process location parameters, such as mean or median, rather than process dispersion parameters. This paper develops a new robust control chart by integrating a two-sample nonparametric test into the effective change-point model. Our proposed chart is easy in computation, convenient to use, and very powerful in detecting process dispersion shifts.

  20. Culinary Arts Profile.

    Science.gov (United States)

    Missouri Univ., Columbia. Instructional Materials Lab.

    This chart is intended for use in documenting the fact that a student participating in a culinary arts program has achieved the performance standards specified in the Missouri Competency Profile for culinary arts. The chart includes space for recording basic student and instructor information and the student's on-the-job training and work…

  1. Growth charts: A diagnostic tool.

    Science.gov (United States)

    Khadilkar, Vaman; Khadilkar, Anuradha

    2011-09-01

    Assessment of growth by objective anthropometric methods is crucial in child care. India is in a phase of nutrition transition and thus it is vital to update growth references regularly. To review growth standards and references for assessment of physical growth of Indian children for clinical use and research purposes. Basics of growth charts and importance of anthropometric measurements are described. A comparison between growth standards and references is provided. Further, Indian growth reference curves based on the data collected by Agarwal et al. and adopted by the Indian Academy of Pediatrics, World Health Organization growth standards for children under the age of 5 years (2006) and contemporary Indian growth references published on apparently healthy affluent Indian children (data collected in 2007-08) are discussed. The article also discusses the use of adult equivalent body mass index (BMI) cut-offs for screening for overweight and obesity in Indian children. For the assessment of height, weight and BMI, WHO growth standards (for children excel macro for calculating SD scores can be obtained from the author (email: vamankhadilkar@gmail.com). Contemporary growth charts can be obtained by sending a message to 08861201183 or email: gntd@novonordisk.com.

  2. Development and validation of a new Chinese reading chart for children.

    Science.gov (United States)

    Cheung, Josephine P Y; Liu, Dilys S K; Lam, Catherine C C; Cheong, Allen M Y

    2015-09-01

    This study aimed to develop and validate a new Chinese reading chart for children. The characteristics of reading profiles among Hong Kong children were also investigated. A new reading chart was developed using the design principles of the MNREAD chart. Children (N = 169) aged seven to 11 years with normal vision and no developmental or reading difficulties were recruited from four local Hong Kong primary schools located in four different districts. Reading performance was measured using three versions of the new Chinese reading chart for children as well as six short passages. Repeated reading measures were conducted for 79 participants 4-8 weeks later. A linear mixed-model analysis was performed for the reading measures to identify the contribution of each source of variation (individual participant, among-charts within-session and between-sessions, and error) to the total variance. Three reading parameters were derived from the Chinese reading chart for children - maximum reading speed (MRS), critical print size (CPS) and reading acuity (RA). Results from the linear mixed-model and Bland and Altman analyses revealed that all three versions of the chart were reproducible, with little variability among-charts and between-sessions (p reading speed measured by the chart and ordinary children's reading passages confirmed the usefulness of the chart for assessing children's reading performance (Rc = 0.67, 95% CI of 0.60-0.73). We developed and validated a new Chinese reading chart for children for quantifying reading performance in Chinese children with normal reading ability. This standardised clinical test can be reliably used to measure the MRS, CPS and RA in Chinese-speaking children. Further research is needed to evaluate the validity of this chart for assessing reading performance in Chinese children with reading difficulties, dyslexia or low vision. © 2015 The Authors Ophthalmic & Physiological Optics © 2015 The College of Optometrists.

  3. Growth charts: A diagnostic tool

    Directory of Open Access Journals (Sweden)

    Vaman Khadilkar

    2011-01-01

    Full Text Available Context: Assessment of growth by objective anthropometric methods is crucial in child care. India is in a phase of nutrition transition and thus it is vital to update growth references regularly. Objective: To review growth standards and references for assessment of physical growth of Indian children for clinical use and research purposes. Materials and Methods: Basics of growth charts and importance of anthropometric measurements are described. A comparison between growth standards and references is provided. Further, Indian growth reference curves based on the data collected by Agarwal et al. and adopted by the Indian Academy of Pediatrics, World Health Organization growth standards for children under the age of 5 years (2006 and contemporary Indian growth references published on apparently healthy affluent Indian children (data collected in 2007-08 are discussed. The article also discusses the use of adult equivalent body mass index (BMI cut-offs for screening for overweight and obesity in Indian children. Results and Conclusions: For the assessment of height, weight and BMI, WHO growth standards (for children < 5 years and contemporary cross sectional reference percentile curves (for children from 5-18 years are available for clinical use and for research purposes. BMI percentiles (adjusted for the Asian adult BMI equivalent cut-offs for the assessment of physical growth of present day Indian children are also available. LMS values and Microsoft excel macro for calculating SD scores can be obtained from the author (email: vamankhadilkar@gmail.com. Contemporary growth charts can be obtained by sending a message to 08861201183 or email: gntd@novonordisk.com.

  4. Robust control charts in statistical process control

    OpenAIRE

    Nazir, H.Z.

    2014-01-01

    The presence of outliers and contaminations in the output of the process highly affects the performance of the design structures of commonly used control charts and hence makes them of less practical use. One of the solutions to deal with this problem is to use control charts which are robust against violations of the basic assumptions, like normality. The effect of using robust or other alternative estimators has not been investigated thoroughly in perspective of control charting literature....

  5. Variable Control Charts - Linear Failure Rate Distribution

    Directory of Open Access Journals (Sweden)

    Metlapalli Chaitanya Priya

    2017-12-01

    Full Text Available The well known Linear Failure Rate Distribution (LFRD is considered. A process variate following LFRD is thought of in order to develop control charts for subgroup mean and subgroup range. In view of the limitations on LFRD the theoretical control limits are obtained through some approximations and the resulting control chart limits are worked out. Comparisons with the control limits of similar variable control charts is also presented.

  6. Electronic applications of the Smith chart

    CERN Document Server

    Smith, Phillip

    1995-01-01

    The legendary Smith chart inventor's classic reference book describes how the chart is used for designing lumped element and transmission line circuits. Provides tutorial material on transmission line theory and behavior, circuit representation on the chart, matching networks, network transformations and broadband matching. Includes a new chapter with examples designs and description of the winSMITH software accessory. Many computational instruments have succumbed to the power of the digital computer. This is not the case with the Smith Chart. A testament to Phil's genius is that his Smith Cha

  7. Software tool for physics chart checks.

    Science.gov (United States)

    Li, H Harold; Wu, Yu; Yang, Deshan; Mutic, Sasa

    2014-01-01

    Physics chart check has long been a central quality assurance (QC) measure in radiation oncology. The purpose of this work is to describe a software tool that aims to accomplish simplification, standardization, automation, and forced functions in the process. Nationally recognized guidelines, including American College of Radiology and American Society for Radiation Oncology guidelines and technical standards, and the American Association of Physicists in Medicine Task Group reports were identified, studied, and summarized. Meanwhile, the reported events related to physics chart check service were analyzed using an event reporting and learning system. A number of shortfalls in the chart check process were identified. To address these problems, a software tool was designed and developed under Microsoft. Net in C# to hardwire as many components as possible at each stage of the process. The software consists of the following 4 independent modules: (1) chart check management; (2) pretreatment and during treatment chart check assistant; (3) posttreatment chart check assistant; and (4) quarterly peer-review management. The users were a large group of physicists in the author's radiation oncology clinic. During over 1 year of use the tool has proven very helpful in chart checking management, communication, documentation, and maintaining consistency. The software tool presented in this work aims to assist physicists at each stage of the physics chart check process. The software tool is potentially useful for any radiation oncology clinics that are either in the process of pursuing or maintaining the American College of Radiology accreditation.

  8. Robust control charts in statistical process control

    NARCIS (Netherlands)

    Nazir, H.Z.

    2014-01-01

    The presence of outliers and contaminations in the output of the process highly affects the performance of the design structures of commonly used control charts and hence makes them of less practical use. One of the solutions to deal with this problem is to use control charts which are robust

  9. New corrections for old control charts

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.

    2003-01-01

    When using standard control charts, typically several parameters need to be estimated. For the usual sample sizes, this is known to affect the performance of the chart. Here we present simple corrections to solve this problem. As a basis we use existing factors which are widely used for the

  10. 47 CFR 73.333 - Engineering charts.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Engineering charts. 73.333 Section 73.333 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES FM Broadcast Stations § 73.333 Engineering charts. This section consists of the following Figures 1, 1a, 2, and...

  11. Obtaining the Andersen's chart, triangulation algorithm

    DEFF Research Database (Denmark)

    Sabaliauskas, Tomas; Ibsen, Lars Bo

    Andersen’s chart (Andersen & Berre, 1999) is a graphical method of observing cyclic soil response. It allows observing soil response to various stress amplitudes that can lead to liquefaction, excess plastic deformation or stabilizing soil response. The process of obtaining the original chart has...

  12. SMART AERONAUTICAL CHART MANAGEMENT SYSTEM DESIGN

    Directory of Open Access Journals (Sweden)

    M. E. Pakdil

    2015-10-01

    Full Text Available Civil aviation is developing rapidly, and the number of domestic and international operations is increasing exponentially every year than the previous one. Airline companies with increased air traffic and the number of passengers increase the demand of new aircrafts. An aircraft needs not only fuel but also pilot and aeronautical information (charts, digital navigation information, flight plan, and etc. to perform flight operation. One of the most important components in aeronautical information is the terminal chart. Authorized institution in every state is responsible to publish their terminal charts for certain periods. Although these charts are produced in accordance with ICAO’s Annex 4 and Annex 15, cartographic representation and page layout differs in each state’s publication. This situation makes difficult to read them by pilots. In this paper, standard instrument departure (SID charts are analysed to produce by use of cutting-edge and competitive technologies instead of classical computer-aided drawing and vector based graphic applications that are currently used by main chart producers. The goal is to design efficient and commercial chart management system that is able to produce aeronautical charts with same cartographic representation for all states.

  13. Robust CUSUM control charting for process dispersion

    NARCIS (Netherlands)

    Nazir, H.Z.; Riaz, M.; Does, R.J.M.M.

    2015-01-01

    Process monitoring through control charts is a quite popular practice in statistical process control. From a statistical point of view, a superior control chart is one that has an efficient design structure, but having resistance against unusual situations is of more practical importance. To have a

  14. 49 CFR 236.718 - Chart, dog.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Chart, dog. 236.718 Section 236.718 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF... OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.718 Chart, dog. A...

  15. Color Charts, Esthetics, and Subjective Randomness

    Science.gov (United States)

    Sanderson, Yasmine B.

    2012-01-01

    Color charts, or grids of evenly spaced multicolored dots or squares, appear in the work of modern artists and designers. Often the artist/designer distributes the many colors in a way that could be described as "random," that is, without an obvious pattern. We conduct a statistical analysis of 125 "random-looking" art and design color charts and…

  16. Robust Control Charts for Time Series Data

    NARCIS (Netherlands)

    Croux, C.; Gelper, S.; Mahieu, K.

    2010-01-01

    This article presents a control chart for time series data, based on the one-step- ahead forecast errors of the Holt-Winters forecasting method. We use robust techniques to prevent that outliers affect the estimation of the control limits of the chart. Moreover, robustness is important to maintain

  17. FusionCharts Beginner's Guide The Official Guide for FusionCharts Suite

    CERN Document Server

    Nadhani, Sanket; Bhattacharya, Shamasis

    2012-01-01

    The book is written as a practical, step-by-step guide to using FusionCharts Suite. The book not only teaches you the fundamentals and implementation of FusionCharts Suite, but also makes you the data visualization guru among your friends and colleagues by teaching how to select the right chart type and usability tips. Filled with examples, code samples and practical tips in a no-nonsense way, the book is a breeze to read.This book is both for beginners and advanced web developers who need to create interactive charts for their web applications. No previous knowledge of FusionCharts Suite is a

  18. The art and science of chart review.

    Science.gov (United States)

    Allison, J J; Wall, T C; Spettell, C M; Calhoun, J; Fargason, C A; Kobylinski, R W; Farmer, R; Kiefe, C

    2000-03-01

    Explicit chart review was an integral part of an ongoing national cooperative project, "Using Achievable Benchmarks of Care to Improve Quality of Care for Outpatients with Depression," conducted by a large managed care organization (MCO) and an academic medical center. Many investigators overlook the complexities involved in obtaining high-quality data. Given a scarcity of advice in the quality improvement (QI) literature on how to conduct chart review, the process of chart review was examined and specific techniques for improving data quality were proposed. The abstraction tool was developed and tested in a prepilot phase; perhaps the greatest problem detected was abstractor assumption and interpretation. The need for a clear distinction between symptoms of depression or anxiety and physician diagnosis of major depression or anxiety disorder also became apparent. In designing the variables for the chart review module, four key aspects were considered: classification, format, definition, and presentation. For example, issues in format include use of free-text versus numeric variables, categoric variables, and medication variables (which can be especially challenging for abstraction projects). Quantitative measures of reliability and validity were used to improve and maintain the quality of chart review data. Measuring reliability and validity offers assistance with development of the chart review tool, continuous maintenance of data quality throughout the production phase of chart review, and final documentation of data quality. For projects that require ongoing abstraction of large numbers of clinical records, data quality may be monitored with control charts and the principles of statistical process control. The chart review module, which contained 140 variables, was built using MedQuest software, a suite of tools designed for customized data collection. The overall interrater reliability increased from 80% in the prepilot phase to greater than 96% in the final

  19. A human factors approach to observation chart design can trump health professionals' prior chart experience.

    Science.gov (United States)

    Christofidis, Melany J; Hill, Andrew; Horswill, Mark S; Watson, Marcus O

    2013-05-01

    To determine whether experienced health professionals recognise patient deterioration more accurately and efficiently using (a) novel observation charts, designed from a human factors perspective, or (b) chart designs with which they have long-term experience. Participants were 101 health professionals experienced in using either a multiple parameter track-and-trigger chart or a graphical chart with no track-and-trigger system. Participants were presented with realistic abnormal and normal patient observations recorded on six hospital observation charts of varying design quality, including the chart that participants were familiar with (or a very similar design). Across 48 trials, the participant was asked to specify if any of the vital sign observations were abnormal, or if all of the observations were normal. Participants' overall error rates (i.e., proportion of incorrect responses) and response times, the main outcome measures, were calculated for each observation chart. Participants made significantly fewer errors and responded significantly faster when using a novel user-friendly chart compared with all the other designs, including the charts that they were experienced with in a clinical setting. The findings suggest that, at least in the contexts examined, superior observation chart design appears to trump familiarity. Hence, hospitals motivated to improve the detection of patient deterioration should implement charts designed from a human factors perspective, rather than simply maintaining the status quo of reliance on clinical experience. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  20. Chronic respiratory patient control by multivariate charts.

    Science.gov (United States)

    Correia, Florbela; Nêveda, Rui; Oliveira, Pedro

    2011-01-01

    This article seeks to explain how to monitor the chronic obstructive disease patient and control any complications so that timely treatment can be applied. Control charts and statistical process control (SPC) theory were used on chronic respiratory patient follow-up and control. Controlling several variables simultaneously, using univariate charts, can be misleading, more so when there are correlated variables, so multivariate and univariate control charts were studied. One-sided control charts are preferable when the aim is to detect changes in the mean solely in one direction. Thus, one-sided, univariate and multivariate charts were built, which identified previously undetected out-of-control events. The study's main limitation is its retrospective nature. However, following-up individual patients can highlight medical therapy effects. The article concludes that control charts, in particular one-sided ones, are a valuable tool for monitoring chronic respiratory patients, thus contributing to medical decision making. The article highlights control chart application to chronic respiratory patient follow-up, permitting a global view of patient evolution over time.

  1. A Standardized Arabic Reading Acuity Chart: The Balsam Alabdulkader-Leat Chart.

    Science.gov (United States)

    Alabdulkader, Balsam; Leat, Susan J

    2017-08-01

    The aim of this study was to develop and validate the first standardized Arabic continuous text near-visual-acuity chart, the Balsam Alabdulkader-Leat (BAL) chart. Three versions of the BAL chart were created from previously validated sentences. Reading acuity (RA) and reading speed in standard-length words per minute (SLWPM) were measured for three versions of the BAL chart and three English charts (MNREAD, Colenbrander, and Radner) for 86 bilingual adults with normal vision aged 15 to 59 years. The RA and SLWPM were compared using analysis of variance. To analyze agreement between the charts, Bland-Altman plots were used. Normal visual acuity (0.00 logMAR [log minimum angle of resolution]) was calibrated for the BAL chart with linear regression analysis. Average RAs for BAL1, BAL2, and BAL3 were 0.62, 0.64 and 0.65 log-point print, respectively, which were statistically significantly different (repeated-measures analysis of variance, P charts were 0.054 (between 1 and 2), 0.061 (between 2 and 3), and 0.059 (between 1 and 3). Linear regression between the average RA for the BAL chart and the MNREAD and Radner charts showed that 0.7 log-point size at 40 cm is equivalent to 0.00 logMAR, and the new BAL chart was labeled accordingly. Mean SLWPM for the BAL charts was 201, 195, and 195 SLWPM, respectively, and for the Colenbrander, MNREAD, and Radner charts was 146, 171, and 146, respectively. The coefficients of agreement for log-SLWPM between BAL1 and BAL2, BAL2 and BAL3, and BAL1 and BAL3 were 0.063, 0.064, and 0.057 log-SLWPM, respectively. The BAL chart showed high interchart agreement. It is recommended for accurate near performance measures in Arabic for both research and clinical settings.

  2. 21 CFR 886.1150 - Visual acuity chart.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Visual acuity chart. 886.1150 Section 886.1150...) MEDICAL DEVICES OPHTHALMIC DEVICES Diagnostic Devices § 886.1150 Visual acuity chart. (a) Identification. A visual acuity chart is a device that is a chart, such as a Snellen chart with block letters or...

  3. Flood tracking chart, Amite River Basin, Louisiana

    Science.gov (United States)

    Callender, Lawrence E.; McCallum, Brian E.; Brazelton, Sebastian R.; Anderson, Mary L.; Ensminger, Paul A.

    1998-01-01

    The Amite River Basin flood tracking chart is designed to assist emergency response officials and the local public in making informed decisions about the safety of life and property during floods along the Amite and Comite Rivers and Bayou Manchac in southeastern Louisiana. This chart is similar in concept to the charts used to track hurricanes; the user can record the latest river stage information at selected gaging stations and the latest flood crest predictions. The latest stage data can be compared to historical flood peaks as well as to the slab or pier elevation of a threatened property. The chart also discusses how to acquire the latest river stage data from the Internet and a recorded voice message.

  4. Chart Supplements - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The Chart Supplements are searchable by individual airport in PDF format. They contain data on public and joint use airports, seaplane bases, heliports, VFR airport...

  5. Automating the initial physics chart checking process

    National Research Council Canada - National Science Library

    Furhang, Eli E; Dolan, James; Sillanpaa, Jussi K; Harrison, Louis B

    2009-01-01

    The initial physics chart check, an essential quality assurance process, verifies that the physician intent is properly expressed in the treatment plan, the treatment plan is reasonable, and the Record and Verify (RV...

  6. 77 FR 13683 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2012-03-07

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal...-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum (ACF) to discuss... Charting Forum. BILLING CODE M ...

  7. The retrospective chart review: important methodological considerations

    Directory of Open Access Journals (Sweden)

    Vassar Matt

    2013-11-01

    Full Text Available In this paper, we review and discuss ten common methodological mistakes found in retrospective chart reviews. The retrospective chart review is a widely applicable research methodology that can be used by healthcare disciplines as a means to direct subsequent prospective investigations. In many cases in this review, we have also provided suggestions or accessible resources that researchers can apply as a “best practices” guide when planning, conducting, or reviewing this investigative method.

  8. Why traditional statistical process control charts for attribute data should be viewed alongside an xmr-chart.

    Science.gov (United States)

    Mohammed, Mohammed A; Worthington, Peter

    2013-03-01

    The use of statistical process control (SPC) charts in healthcare is increasing. The general advice when plotting SPC charts is to begin by selecting the right chart. This advice, in the case of attribute data, may be limiting our insights into the underlying process and consequently be potentially misleading. Given the general lack of awareness that additional insights may be obtained by using more than one SPC chart, there is a need to review this issue and make some recommendations. Under purely common cause variation the control limits on the xmr-chart and traditional attribute charts (eg, p-chart, c-chart, u-chart) will be in close agreement, indicating that the observed variation (xmr-chart) is consistent with the underlying Binomial model (p-chart) or Poisson model (c-chart, u-chart). However, when there is a material difference between the limits from the xmr-chart and the attribute chart then this also constitutes a signal of an underlying systematic special cause of variation. We use one simulation and two case studies to demonstrate these ideas and show the utility of plotting the SPC chart for attribute data alongside an xmr-chart. We conclude that the combined use of attribute charts and xmr-charts, which requires little additional effort, is a useful strategy because it is less likely to mislead us and more likely to give us the insight to do the right thing.

  9. A retrospective chart review of the clinical and psychosocial profile ...

    African Journals Online (AJOL)

    Child and adolescent mental health services face the challenge of high rates of readmission of adolescents into psychiatric facilities before utilisation of community-based substance abuse services. Objective. There is a scarcity of available treatment guidelines for dual-diagnosis adolescents, and a lack of systematically ...

  10. Development of Markup Language for Medical Record Charting: A Charting Language.

    Science.gov (United States)

    Jung, Won-Mo; Chae, Younbyoung; Jang, Bo-Hyoung

    2015-01-01

    Nowadays a lot of trials for collecting electronic medical records (EMRs) exist. However, structuring data format for EMR is an especially labour-intensive task for practitioners. Here we propose a new mark-up language for medical record charting (called Charting Language), which borrows useful properties from programming languages. Thus, with Charting Language, the text data described in dynamic situation can be easily used to extract information.

  11. Charting African Prosperity Gospel economies

    Directory of Open Access Journals (Sweden)

    Andreas Heuser

    2016-05-01

    Full Text Available This article maps the vital debate on Prosperity Gospel in Africa and its relevance for socioeconomic change. Prosperity Gospel centres mainly on speech acts surrounding faith, wealth and victory, combined with ritual enactments around secondary evidences of divine blessings. Claiming this-worldly success and material well-being as signs of grace it has captured public spheres and has created African religio-scapes of prosperity. The survey on the socioeconomics of African prosperity-oriented Pentecostalism firstly traces the historic genealogy of Prosperity Gospel as transposable message. It appears as a generic formula in paradigmatic reinventions of Pentecostalism in post-second and/or cold war America and in its globalisation in postcolonial Africa. The double resignification of Pentecostal theology - a rereading of ‘mammon’ alongside a new ethic of being in the world - relates to the question of socioeconomic agency. Academic discourse connects Prosperity Gospel social capital with interpretations of its ritual texture thriving around rituals of tithings and offerings. Prosperity Gospel economies are profiled as forms of sacral consumption or sacrificial economy, or else as Pentecostal kleptocracy. Contrarily Prosperity Gospel is portrayed as a variant and porter of African social change. The contextualisation of Prosperity Gospel highlights diverse social agency in different milieus. Rural and peri-urban theologies of survival differ from urban progressive and metropolitan business management Prosperity Gospel. The findings defy generalised views on Prosperity Gospel socioeconomics. African Prosperity Gospel indicates a transformative potential in immediate social relationships, whereas claims of impacting structural parameters of society remain, with a few exceptions, part of Pentecostal imagination.

  12. Transmission Line Adapted Analytical Power Charts Solution

    Science.gov (United States)

    Sakala, Japhet D.; Daka, James S. J.; Setlhaolo, Ditiro; Malichi, Alec Pulu

    2017-08-01

    The performance of a transmission line has been assessed over the years using power charts. These are graphical representations, drawn to scale, of the equations that describe the performance of transmission lines. Various quantities that describe the performance, such as sending end voltage, sending end power and compensation to give zero voltage regulation, may be deduced from the power charts. Usually required values are read off and then converted using the appropriate scales and known relationships. In this paper, the authors revisit this area of circle diagrams for transmission line performance. The work presented here formulates the mathematical model that analyses the transmission line performance from the power charts relationships and then uses them to calculate the transmission line performance. In this proposed approach, it is not necessary to draw the power charts for the solution. However the power charts may be drawn for the visual presentation. The method is based on applying derived equations and is simple to use since it does not require rigorous derivations.

  13. Growth charts don't cure malnutrition.

    Science.gov (United States)

    Pyle, D F

    1986-01-01

    Growth chart monitoring developed as a technique designed to decrease infant and child morbidty. In order for similar techniques to reach those who need them most, special emphasis must be placed on the question of how services and information will be delivered. This problem of implementation, often neglected by primary health planners, becomes the linchpin of success or failure when small-scale projects with limited coverage are scaled up to large regional or national programs. Supervision is most often the weakest aspect of growth monitoring programs. This frequently results in improper use of the growth charts and insufficient attention to follow-up of the children at risk. Large scale schemes employing monitoring techniques have tended to spend an inordinate amount of time considering mechanics and technical questions at the expense of analyzing results. Thus, the time consumed by the weighing and the charting is so considerable that little time or energy remains to do what is really important, that is, to analyze individual charts and provide services to those whose growth is faltering. Until the focus shifts away from the numbers of children weighted to the follow-up activities undertaken, programs utilizing growth charts will continue to have limited results. Also, in order to make a successful leap from small-scale project to improved national health, careful planning is necessary when applying any health intervention.

  14. Automating the initial physics chart checking process.

    Science.gov (United States)

    Furhang, Eli E; Dolan, James; Sillanpaa, Jussi K; Harrison, Louis B

    2009-02-11

    The initial physics chart check, an essential quality assurance process, verifies that the physician intent is properly expressed in the treatment plan, the treatment plan is reasonable, and the Record and Verify (RV) system properly captures the plan parameters. In this work the process was automated by characterizing the initial physics chart check as a universal set of steps, compartmentalized into intra-plan and inter-plan reviews. The intra-plan review confirms the diagnosis-prescription-plan correlation, and verifies transfer accuracy of the signed treatment plan parameters into the RV system. The inter-plan review tabulates all RV parameters for similar cases, and highlights outliers. The tabulation of RV parameters for similar cases enables a summation of experience across staff members, and facilitates a comparison using the Statistical Process Control (SPC) formalism. A summary sheet, added to each reviewed chart, automatically documents deviations noted during the review process. Forty-five patient charts were analyzed using the software. The length of time for the entire initial chart-checking process was reduced from about an hour to a few minutes. The code developed in this work allows the user to consider the big picture, trusting the software to track details.

  15. Italian cardiovascular mortality charts of the CUORE project: are they comparable with the SCORE charts?

    LENUS (Irish Health Repository)

    Donfrancesco, Chiara

    2010-08-01

    The aim of this study was to build risk charts for the assessment of cardiovascular mortality of the CUORE project, an Italian longitudinal study, and to compare them with the systematic coronary risk evaluation (SCORE) project charts for low risk European countries.

  16. APPLICATION OF U-CHART AND C-CHART IN TECHNOLOGICAL PROCESS OF PRIMARY WOOD PROCESSING

    Directory of Open Access Journals (Sweden)

    Damjan Stanojević

    2014-01-01

    Full Text Available Control charts are statistical methods of quality control. Basically it is a graph where the abscissa represents the order of control, and the ordinate is marked with parameter values, which are controled by samples over a certain size. Using charts determine varying quality and also related the stability and capacity of the production process in relation to the established control limits. Dr. Schuchardt, which can be regarded as the creator of control charts, says that their mission: to maintain the production process in a state of control, to lead the production process into a state of control, to show that the state of control has been achieved. According to Dr. Schuchardt „for a phenomenon is said to be controlled if based on current data we can predict, at least within certain limits, how the phenomenon will change in the future. Here, under certain prediction within limits means that we can determine, at least approximately, the probability that the phenomenon is found within the given limits“. Control charts for attribute quality characteristics are: p- control chart, m- control chart, u- control chart, c- control chart.

  17. [Comparing quality measurements Part 2: control charts].

    Science.gov (United States)

    Kottner, Jan; Hauss, Armin

    2013-04-01

    Comparative quality measurements and evaluations in nursing play significant roles. Quality measures are affected by systematic and random error. Statistical Process Control (SPC) offers a method to take random variation adequately into account. In this article, control charts are introduced. Those are graphical displays to show quality measures over time. Attribute variables can be displayed by p-, u- and c-control charts. Special cause variations within the processes can be detected by rules. If signs for special cause variations are absent, the process in considered being in statistical control showing common cause variation. A deviation of one data point greater than three standard deviations from the arithmetic mean is considered the strongest signal for non random variation within the process. Within quality improvement contexts control charts outperform traditional comparisons of means and spreads.

  18. Individuals charts and additional tests for changes in spread

    NARCIS (Netherlands)

    Trip, A.; Wieringa, J.E.

    A number of authors have indicated that it is not a good idea to use the moving range chart (MR-chart) with all individuals chart to detect shifts in the spread. However, the combination of these charts is still used in practice and even presented as 'best practice' in some cases. In addition, some

  19. CS-EWMA chart for monitoring process dispersion

    NARCIS (Netherlands)

    Abbas, N.; Riaz, M.; Does, R.J.M.M.

    2013-01-01

    Control charts are the most extensively used technique to detect the presence of special cause variations in processes. They can be classified into memory and memoryless control charts. Cumulative sum and exponentially weighted moving average control charts are memory-type control charts as their

  20. Developing a Logarithmic Chinese Reading Acuity Chart.

    Science.gov (United States)

    Han, Qi-Ming; Cong, Lin-Juan; Yu, Cong; Liu, Lei

    2017-06-01

    An individual's reading ability cannot be reliably predicted from his/her letter acuity, contrast sensitivity, and visual field extent. We developed a set of Chinese reading acuity charts (C-READ) to assess the reading ability of Chinese readers, based on the collective wisdom of previously published reading acuity charts, especially the MNRead and the Radner Reading Charts. The C-READ consists of three charts. Each consists sixteen 12-character simplified Chinese sentences crafted from first- to third-grade textbooks. One hundred eighteen native Chinese-speaking college students (aged 22.1 ± 2.1 years) with normal or corrected to normal near vision (-0.26 ± 0.05 logMAR) were included in the study to develop the C-READ charts, to test the homogeneity of the three charts, and to validate the C-READ against the text paragraphs from the International Reading Speed Texts (IReST) with corrected and uncorrected near vision. The reading acuity, critical print size, and maximum reading speed for young normal native Chinese-speaking readers were 0.16 ± 0.05 logMAR, 0.24 ± 0.06 logMAR, and 273.44 ± 34.37 characters per minute (mean ± SD), respectively. The reliability test revealed no significant differences among the three C-READ charts and no significant test order effect in the three reading parameters. Regression analyses showed that the IReST reading speed could be reliably predicted by the C-READ maximum reading speed under the corrected near-vision condition (adjusted R = 0.72) and by C-READ maximum reading speed and critical print size under the uncorrected near-vision condition (adjusted R = 0.69). The three C-READ charts are very comparable to each other, and there is no significant order effect. Reading test results can accurately predict continuous text reading performance quantified by the IReST reading speed over a wide range of refractive errors. The C-READ is a reliable and valid clinical instrument for quantifying reading performance in simplified

  1. Cost comparisons of modified X̅ chart for autocorrelated observations

    OpenAIRE

    Prajapati D. R.

    2016-01-01

    This paper presents the economic design of modified X̅ chart for autocorrelated data and comparison with the economic design of Shewhart’s X̅ chart. An attempt has been made to counter autocorrelation by designing the modified X̅ chart; as the cost of operating a process control system is an important element in the economic design of control charts. The economic designs of both modified and Shewhart X̅ charts for autocorrelated observations...

  2. Process capability index-based control chart for variables

    OpenAIRE

    Adeoti, Olatunde Adebayo; Olaomi, John Olutunji

    2017-01-01

    This paper proposes a process capability index-based control chart for variables using the Downton estimator with a specified Cp value. The proposed chart is able to address the issue of control and capability simultaneously. We also provide a control chart constant to construct the process capability index-based control chart. A numerical example is presented to demonstrate the application of the proposed chart, and the effect of non-normality is discussed. The result shows that the proposed...

  3. Simulation on Control Chart in Monitoring the Multivariate Process Variability

    OpenAIRE

    Sunusi, Nurtiti

    2017-01-01

    - Abstract. Control chart used to monitor shifts in the process mean and variability for multivariate data. This paper aims to monitor process variability through chart. Process variability observed by used the determinant of the sample covariance matrix, which is called . The result of this paper show that the improved chart is more sensitive to shifts in the process variability. The standard chart has a bigger ARL than the improved chart by simulation.

  4. ICAO Aeronautical chart production: aerodrome obstruction charts from small–format aerial digital imagery

    Directory of Open Access Journals (Sweden)

    Jorge Padro Molina

    2012-11-01

    Full Text Available Aeronautical charts and aerodrome obstruction charts, provide information about obstacles around the airport, so pilots and air traffic controllers can comply with the procedures and limitations of its utilization. Safety in aviation demands updated and precise aeronautical charts production, adopting the standards of the International Civil Aviation Organization (ICAO. In this paper the methodology employed to generate obstruction charts for five airports in Mexico, using aerial digital imagery obtained with small–format cameras, is described. Through two aerial surveys on each airport, from 10 000 and 5 000 feet above ground level, two orthomosaics were generated covering the airport influence area, the runway, and the obstacle limitation surfaces: approach/Take–off climb, transitional, inner horizontal, and conical. Using stereopair photointerpretation most of the obstacles were identified, and by means of the orthomosaics; aerodrome charts, and aerodrome obstruction charts types A, B and C, were generated. Using satellite geodetic receivers, 18 points were surveyed on each runway in order to obtain its dimensions, and to establish ground control points for mosaics generation. Throughout detailed field work, height and location of the obstacles were verified, and finally, after several reviewing processes by aeronautical authorities, generation of ICAO charts was concluded when all airport maps were integrated in a Geographical Information System.

  5. ICS International Chronostratigraphic Chart 2015/01

    NARCIS (Netherlands)

    Cohen, K.M.|info:eu-repo/dai/nl/185633374; Finney, S.C.; Gibbard, P.L.

    Units of all ranks are in the process of being defined by Global Boundary Stratotype Section and Points (GSSP) for their lower boundaries, including those of the Archean and Proterozoic, long defined by Global Standard Stratigraphic Ages (GSSA). Charts and detailed information on ratified GSSPs are

  6. ICS International Chronostratigraphic Chart 2016/04

    NARCIS (Netherlands)

    Cohen, K.M.|info:eu-repo/dai/nl/185633374; Finney, S.C.; Gibbard, P.L.

    Units of all ranks are in the process of being defined by Global Boundary Stratotype Section and Points (GSSP) for their lowerboundaries, including those of the Archean and Proterozoic, long defined by Global Standard Stratigraphic Ages (GSSA). Charts and detailed information on ratified GSSPs are

  7. Charting environmental pollution. [by noise measurements

    Science.gov (United States)

    Halpert, E.; Bizo, F.; Karacsonyi, Z.

    1974-01-01

    It is found that areas affected by different noxious agents are within the limits traced for high noise level areas; consequently, it is suggested that high noise pressure levels should be used as the primary indication of environmental pollution. A complex methodology is reported for charting environmental pollution due to physical, chemical and biological noxious agents on the scale of an industrial district.

  8. Body Mass Index (BMI) Charts (For Parents)

    Science.gov (United States)

    ... September 2015 More on this topic for: Parents Kids Teens Overweight and Obesity Growth Charts What Is a Growth Disorder? Your Child's Weight What Is a BMI Report Card? Your Child's ... the Right Weight for Me? Be a Fit Kid Body Mass Index (BMI) I'm Not Fat. ...

  9. EWMA control charts in statistical process monitoring

    NARCIS (Netherlands)

    Zwetsloot, I.M.

    2016-01-01

    In today’s world, the amount of available data is steadily increasing, and it is often of interest to detect changes in the data. Statistical process monitoring (SPM) provides tools to monitor data streams and to signal changes in the data. One of these tools is the control chart. The topic of this

  10. POWER AND INFLUENCE CHARTING: THE GOOGLE WAY

    Energy Technology Data Exchange (ETDEWEB)

    Troy Hiltbrand; Sharon Berrett

    2011-07-01

    The success or failure of a project may be charted in the initiation phase. Therefore, initiation is arguably the most important phase of any project. During the initiation phase, the foundation for the project is established, including the selection of project sponsors and champions and getting their buy-in, which sets the project up for success.

  11. An Exponentially Weighted Moving Average Control Chart for Bernoulli Data

    DEFF Research Database (Denmark)

    Spliid, Henrik

    2010-01-01

    weighted moving average (EWMA) control chart intended for surveillance of the probability of failure, p, is described. The chart is based on counting the number of non-failures produced between failures in combination with a variance-stabilizing transformation. The distribution function...... of the transformation is given and its limit for small values of p is derived. Control of high yield processes is discussed and the chart is shown to perform very well in comparison with both the most common alternative EWMA chart and the CUSUM chart. The construction and the use of the proposed EWMA chart...

  12. Process capability index-based control chart for variables

    Directory of Open Access Journals (Sweden)

    Adeoti, Olatunde Adebayo

    2017-08-01

    Full Text Available This paper proposes a process capability index-based control chart for variables using the Downton estimator with a specified Cp value. The proposed chart is able to address the issue of control and capability simultaneously. We also provide a control chart constant to construct the process capability index-based control chart. A numerical example is presented to demonstrate the application of the proposed chart, and the effect of non-normality is discussed. The result shows that the proposed control chart performs better in monitoring and assessing processes, and eliminates the usual two-stage procedure reflected in the literature.

  13. [Ophthalmologic reading charts : Part 2: Current logarithmically scaled reading charts].

    Science.gov (United States)

    Radner, W

    2016-12-01

    To analyze currently available reading charts regarding print size, logarithmic print size progression, and the background of test-item standardization. For the present study, the following logarithmically scaled reading charts were investigated using a measuring microscope (iNexis VMA 2520; Nikon, Tokyo): Eschenbach, Zeiss, OCULUS, MNREAD (Minnesota Near Reading Test), Colenbrander, and RADNER. Calculations were made according to EN-ISO 8596 and the International Research Council recommendations. Modern reading charts and cards exhibit a logarithmic progression of print sizes. The RADNER reading charts comprise four different cards with standardized test items (sentence optotypes), a well-defined stop criterion, accurate letter sizes, and a high print quality. Numbers and Landolt rings are also given in the booklet. The OCULUS cards have currently been reissued according to recent standards and also exhibit a high print quality. In addition to letters, numbers, Landolt rings, and examples taken from a timetable and the telephone book, sheet music is also offered. The Colenbrander cards use short sentences of 44 characters, including spaces, and exhibit inaccuracy at smaller letter sizes, as do the MNREAD cards. The MNREAD cards use sentences of 60 characters, including spaces, and have a high print quality. Modern reading charts show that international standards can be achieved with test items similar to optotypes, by using recent technology and developing new concepts of test-item standardization. Accurate print sizes, high print quality, and a logarithmic progression should become the minimum requirements for reading charts and reading cards in ophthalmology.

  14. JDATAVIEWER – JAVA-Based Charting Library

    CERN Document Server

    Kruk, G

    2009-01-01

    The JDataViewer is a Java-based charting library developed at CERN, with powerful, extensible and easy to use function editing capabilities. Function edition is heavily used in Control System applications, but poorly supported in products available on the market. The JDataViewer enables adding, removing and modifying function points graphically (using a mouse) or by editing a table of values. Custom edition strategies are supported: developer can specify an algorithm that reacts to the modification of a given point in the function by automatically adapting all other points. The library provides all typical 2D plotting types (scatter, polyline, area, bar, HiLo, contour), as well as data point annotations and data indicators. It also supports common interactors to zoom and move the visible view, or to select and highlight function segments. A clear API is provided to configure and customize all chart elements (colors, fonts, data ranges ...) programmatically, and to integrate non-standard rendering types, inter...

  15. APLIKASI GANTT CHART PADA ALGORITMA PENJADUALAN PROSES

    Directory of Open Access Journals (Sweden)

    Sri Handayani

    2014-01-01

    Full Text Available Operating system is a compulsory subject taken in the Information Technology Student FTIK - USM . In the discussion of the material management process of the operating systems course , there are some scheduling algorithm which processes need to be understood and any existing process scheduling algorithm presented in the form of Grantt Charts . Because of the difficulties experienced by students in understanding the process of scheduling algorithms by an Operating System become researchers inspiration to conduct this study to make an application Grantt Chart.. This study uses a waterfall system development , where the flow will follow the research the phase in waterfall . This application will be built using Visual Basic 6 .  The purpose of this research is to produce an application of learning are presented in graphical form to facilitate students in understanding the material scheduling process performed by an operating system so that students can also understand how a computer can do multiple processes simultaneously.

  16. GENERALISATION OF SUBMARINE FEATURES ON NAUTICAL CHARTS

    Directory of Open Access Journals (Sweden)

    E. Guilbert

    2012-07-01

    Full Text Available On most large scale and middle scale maps, relief is represented by contours and spot heights. In order to adapt the representation to the scale, the terrain is generalised either by smoothing or filtering the terrain model or by simplifying the contours. However this approach is not applicable to nautical chart construction where terrain features are selected according to their importance for navigation. This paper presents an approach for the consideration of feature attributes in the generalisation of a set of contours with respect to nautical chart constraints. Features are defined by sets of contours and a set of generalisation operators applied to features is presented. The definitions are introduced in a multi-agent system in order to perform automatic generalisation of a contour set. Results are discussed on a case study and directions for future work are presented.

  17. New growth charts for Libyan preschool children.

    Science.gov (United States)

    Bordom, J H; Billot, L; Gueguen, R; Deschamps, J R

    2008-01-01

    To draw up new growth charts for Libyan children under 5 years of age, a cross-sectional survey was carried out in urban and rural areas in 2 regions of the Libyan Arab Jamahiriya from June 1999 to February 2000. Using WHO cluster sampling methodology, 1473 infants and children of both sexes aged between 0 and 59 months were selected from residential areas, maternal and child health centres, kindergartens and the delivery section of hospitals. Growth charts for weight-for-age, height-for-age and weight-for-height were plotted and smoothed, to provide reference curves for clinical, epidemiological and research purposes. In addition, mean Z-scores were analysed by sociodemographic variables collected from interviews with parents. Factors with a strong influence on childhood growth patterns were child's age, mother's education level and sex.

  18. Intelligent Bar Chart Plagiarism Detection in Documents

    Directory of Open Access Journals (Sweden)

    Mohammed Mumtaz Al-Dabbagh

    2014-01-01

    Full Text Available This paper presents a novel features mining approach from documents that could not be mined via optical character recognition (OCR. By identifying the intimate relationship between the text and graphical components, the proposed technique pulls out the Start, End, and Exact values for each bar. Furthermore, the word 2-gram and Euclidean distance methods are used to accurately detect and determine plagiarism in bar charts.

  19. Intelligent Bar Chart Plagiarism Detection in Documents

    Science.gov (United States)

    Al-Dabbagh, Mohammed Mumtaz; Salim, Naomie; Alkawaz, Mohammed Hazim; Saba, Tanzila; Al-Rodhaan, Mznah; Al-Dhelaan, Abdullah

    2014-01-01

    This paper presents a novel features mining approach from documents that could not be mined via optical character recognition (OCR). By identifying the intimate relationship between the text and graphical components, the proposed technique pulls out the Start, End, and Exact values for each bar. Furthermore, the word 2-gram and Euclidean distance methods are used to accurately detect and determine plagiarism in bar charts. PMID:25309952

  20. Solid Rocket Testing at AFRL (Briefing Charts)

    Science.gov (United States)

    2016-10-21

    19b. TELEPHONE NUMBER (Include area code) 10/21/2016 Briefing Charts 01 October 2016 - 31 October 2016 Solid Rocket Testing at AFRL Robert Antypas Air...Unclassified SAR 18 R. Antypas N/A Solid Rocket Testing at AFRL 21 Oct 2016 Robert Antypas AFRL/RQRO -Distribution A: Approved for Public Release...Distribution Unlimited. PA#16492 2 Agenda • Solid Rocket Motors • History of Sea Level Testing • Small Component Testing • Full-scale Testing • Altitude

  1. Intelligent bar chart plagiarism detection in documents.

    Science.gov (United States)

    Al-Dabbagh, Mohammed Mumtaz; Salim, Naomie; Rehman, Amjad; Alkawaz, Mohammed Hazim; Saba, Tanzila; Al-Rodhaan, Mznah; Al-Dhelaan, Abdullah

    2014-01-01

    This paper presents a novel features mining approach from documents that could not be mined via optical character recognition (OCR). By identifying the intimate relationship between the text and graphical components, the proposed technique pulls out the Start, End, and Exact values for each bar. Furthermore, the word 2-gram and Euclidean distance methods are used to accurately detect and determine plagiarism in bar charts.

  2. Change Point Detection with Robust Control Chart

    Directory of Open Access Journals (Sweden)

    Ng Kooi Huat

    2011-01-01

    Full Text Available Monitoring a process over time using a control chart allows quick detection of unusual states. In phase I, some historical process data, assumed to come from an in-control process, are used to construct the control limits. In Phase II, the process is monitored for an ongoing basis using control limits from Phase I. In Phase II, observations falling outside the control limits or unusual patterns of observations signal that the process has shifted from in-control process settings. Such signals trigger a search for assignable cause and, if the cause is found, corrective action will be implemented to prevent its recurrence. The purpose of this paper is to introduce a new methodology appropriate for constructing a robust control chart when a nonnormal or a contaminated data that may arise in phase I state. Through extensive Monte Carlo simulations, we examine the behaviors and performances of the proposed MM robust control chart when there is a process shift in mean.

  3. Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — From 1893 to 1956, the Danish Meteorological Institute (DMI) created charts of observed and inferred sea ice extent for each summer month. These charts are based on...

  4. Design of Attribute Control Chart Based on Regression Estimator

    Directory of Open Access Journals (Sweden)

    Nadia Mushtaq

    2017-09-01

    Full Text Available This paper presents a statistical analysis control chart for nonconforming units in quality control. In many situations the Shewhart control charts for nonconforming units may not be suitable or cannot be used, as for many processes, the assumptions of binomial distribution may deviate or may provide inadequate model. In this Study we propose a new control chart based on regression estimator of proportion based on single auxiliary variable, namely the Pr chart and compared its performance with P and Q chart with probability to signal as a performance measure. It has been observed that the proposed chart is superior to the P and Q chart. This study will help quality practitioners to choose an efficient alternative to the classical P and Q charts for monitoring nonconforming units in industrial process.

  5. Chesapeake Highway Advisories Routing Traffic, Chart, Business Plan

    Science.gov (United States)

    1996-10-01

    THE BUSINESS PLAN IS ORGANIZED INTO FOUR MAJOR SECTIONS. THE FIRST SECTION IS INTRODUCTORY IN NATURE AND PROVIDES BACKGROUND INFORMATION ON ITS AND THE CHART PROGRAM IN MARYLAND. IT INCLUDES THE CHART MISSION, GOALS AND OBJECTIVES, AS WELL AS OVERVIE...

  6. The EWMA control chart based on robust scale estimators

    OpenAIRE

    Nadia Saeed; Shahid Kamal

    2016-01-01

    The exponentially weighted moving average (EWMA) chart is very popular in statistical process control for detecting the small shifts in process mean and variance. This chart performs well under the assumption of normality but when data violate the assumption of normality, the robust approaches needed. We have developed the EWMA charts under different robust scale estimators available in literature and also compared the performance of these charts by calculating expected out-of-control points ...

  7. Design of Attribute Control Chart Based on Regression Estimator

    OpenAIRE

    Nadia Mushtaq; Dr. Muhammad Aslam; Jaffer Hussaian

    2017-01-01

    This paper presents a statistical analysis control chart for nonconforming units in quality control. In many situations the Shewhart control charts for nonconforming units may not be suitable or cannot be used, as for many processes, the assumptions of binomial distribution may deviate or may provide inadequate model. In this Study we propose a new control chart based on regression estimator of proportion based on single auxiliary variable, namely the Pr chart and compared its ...

  8. Ewmareg control chart applied in the monitoring of industrial processes

    OpenAIRE

    Danilo Cuzzuol Pedrini; Ângelo Márcio de Oliveira Sant'ana; Carla Schwengber ten Caten

    2011-01-01

    If the process quality characteristics are dependent of control variables, and these vary during the process operation, the basic assumptions of control charts are violated. If the values of the control variables are known, it’s possible to apply the regression control chart. One of the most recent works in this area is the EWMAREG chart, which is the monitoring of the standardized residuals using exponentially weighted moving average control chart. In this paper, we present a systematic appl...

  9. 76 FR 53530 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2011-08-26

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal...-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum (ACF) to discuss... given of a meeting of the FAA Aeronautical Charting Forum to be held from October 25 through October 27...

  10. 78 FR 12415 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2013-02-22

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal...-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum (ACF) to discuss...), notice is hereby given of a meeting of the FAA Aeronautical Charting Forum to be held from April 23...

  11. 75 FR 54221 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2010-09-03

    ... Aeronautical Charting Forum Meeting AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... Administration (FAA) Aeronautical Charting Forum (ACF) to discuss informational content and design of... the FAA Aeronautical Charting Forum to be held from October 26 through October 28, 2010, from 8:30 a.m...

  12. 78 FR 52230 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2013-08-22

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal...-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum (ACF) to discuss...), notice is hereby given of a meeting of the FAA Aeronautical Charting Forum to be held from October 29...

  13. 75 FR 11225 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2010-03-10

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal... Forum (ACF 10-01) to discuss informational content and design of aeronautical charts and related.... App. II), notice is hereby given of a meeting of the FAA Aeronautical Charting Forum to be held from...

  14. 77 FR 50759 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2012-08-22

    ... TRANSPORTATION Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY... announces the bi-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum... hereby given of a meeting of the FAA Aeronautical Charting Forum to be held from October 23 through...

  15. 76 FR 12211 - Government/Industry Aeronautical Charting Forum Meeting

    Science.gov (United States)

    2011-03-04

    ... Federal Aviation Administration Government/Industry Aeronautical Charting Forum Meeting AGENCY: Federal...-annual meeting of the Federal Aviation Administration (FAA) Aeronautical Charting Forum (ACF) to discuss... of a meeting of the FAA Aeronautical ] Charting Forum to be held from April 26 through April 28, 2011...

  16. 46 CFR 150.150 - Exceptions to the compatibility chart.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Exceptions to the compatibility chart. 150.150 Section... CARGOES COMPATIBILITY OF CARGOES § 150.150 Exceptions to the compatibility chart. The Commandant (G-MSO... 1, the Compatibility Chart. ...

  17. 5 CFR Appendix A-1 to Subpart I... - Windchill Chart

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Windchill Chart A Appendix A-1 to Subpart I of Part 550 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY... A-1 to Subpart I of Part 550—Windchill Chart EC01SE91.002 windchill chart in non-metric units...

  18. Individual Charts and Additional Tests for Changes in Spread

    NARCIS (Netherlands)

    Trip, A.; Wieringa, J.E.

    2006-01-01

    Abstract A number of authors have indicated that it is not a good idea to use the MR-chart with an individuals chart to detect shifts in the spread. However, the combination of these charts is still used in practice and even presented as `best practice' in some cases. In addition, some more recent

  19. Google Charts Testing | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    This demo is created without mapsApiKey, the data lives in a virtual data table that generated by the Google Chart API. 36 36 1,403 1,403. 1,403. The following pie chart applies the data for the Adaptation Options (simplified version) to calculate the amount for each program type and percentage. Simple Pie chart applying ...

  20. 15 CFR 738.3 - Commerce Country Chart structure.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 2 2010-01-01 2010-01-01 false Commerce Country Chart structure. 738.3 Section 738.3 Commerce and Foreign Trade Regulations Relating to Commerce and Foreign Trade... COMMERCE CONTROL LIST OVERVIEW AND THE COUNTRY CHART § 738.3 Commerce Country Chart structure. (a) Scope...

  1. Enhanced cumulative sum charts for monitoring process dispersion.

    Science.gov (United States)

    Abujiya, Mu'azu Ramat; Riaz, Muhammad; Lee, Muhammad Hisyam

    2015-01-01

    The cumulative sum (CUSUM) control chart is widely used in industry for the detection of small and moderate shifts in process location and dispersion. For efficient monitoring of process variability, we present several CUSUM control charts for monitoring changes in standard deviation of a normal process. The newly developed control charts based on well-structured sampling techniques - extreme ranked set sampling, extreme double ranked set sampling and double extreme ranked set sampling, have significantly enhanced CUSUM chart ability to detect a wide range of shifts in process variability. The relative performances of the proposed CUSUM scale charts are evaluated in terms of the average run length (ARL) and standard deviation of run length, for point shift in variability. Moreover, for overall performance, we implore the use of the average ratio ARL and average extra quadratic loss. A comparison of the proposed CUSUM control charts with the classical CUSUM R chart, the classical CUSUM S chart, the fast initial response (FIR) CUSUM R chart, the FIR CUSUM S chart, the ranked set sampling (RSS) based CUSUM R chart and the RSS based CUSUM S chart, among others, are presented. An illustrative example using real dataset is given to demonstrate the practicability of the application of the proposed schemes.

  2. Assessment of family physicians' performance using patient charts: interrater reliability and concordance with chart-stimulated recall interview.

    Science.gov (United States)

    Goulet, François; Jacques, André; Gagnon, Robert; Racette, Pierre; Sieber, William

    2007-12-01

    Peer-assessment processes with chart review have been used for many years to assess the clinical performance of physicians. The Quebec medical licensing authority has been required by provincial law to assess the practicing Quebec physicians on a nonvoluntary basis. During the period from January 2001 to November 2004, 25 family physicians in active practice were randomly selected from a pool of about 300. For each physician, 25 to 40 patients' medical charts were randomly selected to evaluate the interrater reliability of peer-review assessment of medical charts and to compare ratings based on chart review with a chart-stimulated recall interview to those based on chart review alone. The concordance between chart review alone and that of chart review with chart-stimulated recall interview was 75% for chart keeping, 69% for clinical investigation, 81% for diagnostic accuracy, and 74% for treatment plan. Ratings based on chart review alone achieve moderate levels of reliability (Kappa = 0.44 to 0.56). It appears that some important information about quality of care is missed when only chart review is used.

  3. On the Mathematics behind the CUSUM Control Charts

    DEFF Research Database (Denmark)

    Madsen, Henrik

    1998-01-01

    This paper describes the mathematics behind CUSUM control charts. An introduction to CUSUM charts is found in (Madsen 1998).CUSUM charts are well suited for checking a measuring system in operation for any departure from some target or specified values. In general they can be used for:- detecting...... from CEN-TC 69. However the presentation in ISO/CD 7871 concentrates on the level, whereas CUSUM charts for detecting changes in the precision are not discussed.This document outlines the theory of CUSUM control charts, and both CUSUM procedures for detecting a drift as well as CUSUM procedures...

  4. Combustion temperature charts for industrial gaseous fuels

    Energy Technology Data Exchange (ETDEWEB)

    Matouskova, V.; Gerak, A.; Hlavacka, V.

    1975-12-01

    Researchers at Czechoslovakia's State Research Institute of Mechanical Engineering offer a method for calculating the theoretical flame temperature that includes the effect of endothermic reactions, especially the dissociation of combustion products. Charts presented for eight types of fuel gases can be used to determine the flame temperature relative to the temperature of the combustion air and to the excess-air ratio. Also considered is the relationship between these parameters and the characteristic temperature relationships for equipment using heat recovered from the flue gases to preheat incoming combustion air.

  5. Genome-wide transcriptome profiling reveals novel insights into Luffa cylindrica browning.

    Science.gov (United States)

    Chen, Xia; Tan, Taiming; Xu, Changcheng; Huang, Shuping; Tan, Jie; Zhang, Min; Wang, Chunli; Xie, Conghua

    2015-08-07

    Luffa cylindrica (sponge gourd) is one of the most popular vegetables in China. Production and consumption of L. cylindrica are limited due to postharvest browning; however, little is known about the genetic regulation of the browning process. In the present study, transcriptome profiles of L. cylindrica cultivars, YLB05 (browning resistant) and XTR05 (browning sensitive), were analyzed using next-generation sequencing to clarify the genes and mechanisms associated with browning. A total of 9.1 Gb of valid data including 116,703 unigenes (>200 bp) were obtained and 39,473 sequences were annotated by alignment against five public databases. Of these, there were 27,407 genes assigned to 747 Gene Ontology functional categories; and 12,350 genes were annotated with 25 Eukaryotic Orthologous Groups (KOG) categories with 343 KOG functional terms. Additionally, by searching against the Kyoto Encyclopedia of Genes and Genomes database, 8689 unigenes were mapped to 189 pathways. Furthermore, there were 24,556 sequences found to be differentially regulated, including 4344 annotated unigenes. Several genes potentially associated with phenolic oxidation, carbohydrate and hormone metabolism were found differentially regulated between the cultivars of different browning sensitivities. Our results suggest that elements involved in enzymatic processes and other pathways might be responsible for L. cylindrica browning. The present study provides a comprehensive transcriptome sequence resource, which will facilitate further studies on gene discovery and exploiting the fruit browning mechanism of L. cylindrica. Copyright © 2015 Elsevier Inc. All rights reserved.

  6. APPLICATION OF MULTIVARIATE CONTROL CHARTS FOR MONITORING AN INDUSTRIAL PROCESS

    Directory of Open Access Journals (Sweden)

    Custodio da Cunha Alves

    2013-12-01

    Full Text Available The effective simultaneous monitoring of the many quality characteristics of a production process often depends on statistical tools that are becoming more and more specific. The goal of this paper is to investigate, via an industrial application, if there are significant differences in sensitivity between the use of Multivariate Cumulative Sum (MCUSUM, Multivariate Exponentially Weighted Average (MEWMA control charts and Hotelling T2 charts in the detection of small changes in the vector of means of the process. In doing this study, we used real data from a machining process. A MCUSUM control chart was applied to monitor the two quality characteristics of this process simultaneously. A MEWMA chart was also applied. The result was compared to the application of the Hotelling T2 chart, which showed that the MCUSUM and MEWMA control charts detected the change sooner. This study was fundamental in defining the best choice between the three charts for the multivariate statistical analysis of this industrial process.

  7. Four Experiments on the Perception of Bar Charts.

    Science.gov (United States)

    Talbot, Justin; Setlur, Vidya; Anand, Anushka

    2014-12-01

    Bar charts are one of the most common visualization types. In a classic graphical perception paper, Cleveland & McGill studied how different bar chart designs impact the accuracy with which viewers can complete simple perceptual tasks. They found that people perform substantially worse on stacked bar charts than on aligned bar charts, and that comparisons between adjacent bars are more accurate than between widely separated bars. However, the study did not explore why these differences occur. In this paper, we describe a series of follow-up experiments to further explore and explain their results. While our results generally confirm Cleveland & McGill's ranking of various bar chart configurations, we provide additional insight into the bar chart reading task and the sources of participants' errors. We use our results to propose new hypotheses on the perception of bar charts.

  8. The Hill Chart Calculation for Pelton Runner Models using the HydroHillChart - Pelton Module Software

    Directory of Open Access Journals (Sweden)

    Adelina Bostan

    2015-07-01

    Full Text Available The Pelton turbines industrial design is based on the hill chart characteristics obtained by measuring the models. Primary data measurements used to obtain the hill chart can be processed graphically, by hand or by using graphic programs respectively CAD programs; the HydroHillChart - Pelton module software is a specialized tool in achieving the hill chart, using interpolation cubic spline functions. Thereby, based on measurements of several models of Pelton turbines, a computerized library, used to design industrial Pelton turbines can be created. The paper presents the universal characteristics calculated by using the HydroHillChart - Pelton module software for a series of Pelton runners.

  9. A paediatric X-ray exposure chart

    Energy Technology Data Exchange (ETDEWEB)

    Knight, Stephen P, E-mail: stephen.knight@health.qld.gov.au [Department of Medical Imaging, Royal Children' s Hospital, Brisbane, Queensland (Australia)

    2014-09-15

    The aim of this review was to develop a radiographic optimisation strategy to make use of digital radiography (DR) and needle phosphor computerised radiography (CR) detectors, in order to lower radiation dose and improve image quality for paediatrics. This review was based on evidence-based practice, of which a component was a review of the relevant literature. The resulting exposure chart was developed with two distinct groups of exposure optimisation strategies – body exposures (for head, trunk, humerus, femur) and distal extremity exposures (elbow to finger, knee to toe). Exposure variables manipulated included kilovoltage peak (kVp), target detector exposure and milli-ampere-seconds (mAs), automatic exposure control (AEC), additional beam filtration, and use of antiscatter grid. Mean dose area product (DAP) reductions of up to 83% for anterior–posterior (AP)/posterior–anterior (PA) abdomen projections were recorded postoptimisation due to manipulation of multiple-exposure variables. For body exposures, the target EI and detector exposure, and thus the required mAs were typically 20% less postoptimisation. Image quality for some distal extremity exposures was improved by lowering kVp and increasing mAs around constant entrance skin dose. It is recommended that purchasing digital X-ray equipment with high detective quantum efficiency detectors, and then optimising the exposure chart for use with these detectors is of high importance for sites performing paediatric imaging. Multiple-exposure variables may need to be manipulated to achieve optimal outcomes.

  10. Quality control chart for crushed granite concrete

    Directory of Open Access Journals (Sweden)

    Ewa E. DESMOND

    2016-07-01

    Full Text Available A chart for assessing in-situ grade (strength of concrete, has been developed in this study. Four grades of concrete after the Nigerian General Specification for Roads and bridges (NGSRB-C20, C25, C30 and C35, is studied at different water-cement ratios for medium and high slump range. The concrete mixes are made from crushed granite rock as coarse aggregate with river sand as fine aggregate. Compression test on specimens are conducted at curing age of 1, 3, 7, 14, 21, 28 and 56 days. Results on concrete workability from slump values, and water-cement ratios revealed that specimens with lower water-cement ratio were less workable but had higher strength, compared to mixes with higher water cement ratio. A simple algorithm using nonlinear regression analysis performed on each experimental data set produced Strength-Age (S-A curves which were used to establish a quality control chart. The accuracy of these curves were evaluated by computing average absolute error (AAS, the error of estimate (EoE and the average absolute error of estimate (Abs EoE for each concrete mix. These were done based on the actual average experimental strengths to measure how close the predicted values are to the experimental data set. The absolute average error of estimate (Abs. EoE recorded was less than ±10% tolerance zone for concrete works.

  11. A Literature Review on the Fuzzy Control Chart; Classifications & Analysis

    Directory of Open Access Journals (Sweden)

    Mohammad Hossein Zavvar Sabegh

    2014-08-01

    Full Text Available Quality control plays an important role in increasing the product quality. Fuzzy control charts are more sensitive than Shewhart control chart. Hence, the correct use of fuzzy control chart leads to producing better-quality products. This area is complex because it involves a large scope of industries, and information is not well organized. In this research, we provide a literature review of the control chart under a fuzzy environment with proposing several classifications and analysis. Moreover, our research considered both attribute and variable control chart by analyzing the related researches based on the content analysis method, to classify past and current developments in the fuzzy control chart. This work has included a distribution of articles according to the journal, the case studies related to fuzzy control chart, the percentage of types of fuzzy control charts used in the literature, performance evaluation of the fuzzy control chart and summary of key points of each review paper. Finally, this paper discusses some future research direction and our overviews. The results of this study can help researchers become familiar with well-known journals, fuzzy control charts used in sample case studies, and to extract key points of each paper in minimum time.

  12. The Importance of Interpolation in Computerized Growth Charting.

    Science.gov (United States)

    Kiger, James R; Taylor, Sarah N

    2016-01-01

    Computer growth charting is increasingly available for clinical and research applications. The LMS method is used to define the growth curves on the charts most commonly used in practice today. The data points for any given chart are at discrete points, and computer programs may simply round to the closest LMS data point when calculating growth centiles. We sought to determine whether applying an interpolation algorithm to the LMS data for commonly used growth charts may reduce the inherent errors which occur with rounding to the nearest data point. We developed a simple, easily implemented interpolation algorithm to use with LMS data. Using published growth charts, we compared predicted growth centiles using our interpolation algorithm versus a standard rounding approach. Using a test scenario of a patient at the 50th centile in weight, compared to using our interpolation algorithm, the method of simply rounding to the nearest data point resulted in maximal z-score errors in weight of the following: 2.02 standard deviations for the World Health Organization 0-to-23 month growth chart, 1.07 standard deviations for the Fenton preterm growth chart, 0.71 standard deviations for the Olsen preterm growth chart, and 0.11 standard deviations for the CDC 2-to-18 year growth chart. Failure to include an interpolation algorithm when designing computerizing growth charts can lead to large errors in centile and z-score calculations.

  13. THE CHART ROMANIA-NATO-UE

    Directory of Open Access Journals (Sweden)

    Duduială Popescu Lorena

    2009-05-01

    Full Text Available viewed in the context of geopolitical and geostrategic current and through the elements of distinction in terms of identity and cultural institutions, chart Romania - NATO / Israel - EU stands under the sign of the common interest channel, firstly, on common values and hence the collective interests of the partners involved in the two organizational structures. Noteworthy in this context is the extent of bilateral involvement of Romania in the bodies and the politico-military, represented by NATO (the North Atlantic Treaty Organization, which is primarily military values and the construction superstate permanent expansion and development - European Union , both generating as much for our country as obligations of a politico-military security, and economic, social, institutional, cultural.

  14. An eye chart for Edgar Degas.

    Science.gov (United States)

    Marmor, Michael F

    2013-10-01

    The French Impressionist painter Edgar Degas had progressive visual loss from a type of maculopathy during the last 40 years of his life. The effects of this visual failure are evident in a comparison of early and later pastels, which shows a loss of precision in outlining, shading, and detail over the years. A remarkable oil painting, Scene from the Steeplechase: The Fallen Jockey, provides on one canvas an historical record of his visual struggles. It was begun in 1866 and reworked in 1880 and 1897, during which his visual acuity fell from near normal to 20/200. Computer simulations show Degas' own view of this painting at each of these times and demonstrate how his style changed: details became rougher and larger in correspondence with his failing acuity. The painting is an eye chart of his career.

  15. Prosopography, prosoporecognography and the Prosoporecognographical Chart.

    Science.gov (United States)

    Santos-Filho, E F; Pereira, H B B

    2017-11-01

    Recognizing and identifying an individual based on his or her face is a technical and scientific challenge and the objective of our investigation. This article's goal is to establish a method, a foundation and an instrument for carrying out the process of recognizing and identifying an individual. Both the construction of the term and the deepening, conceptualization and epistemology of the process of describing and representing the face through a particular method of recognizing and identifying individuals are described in this article. The proposal of the Prosoporecognographical Chart is an important step in the facial-identification process, establishing taxonomic parameters for the phenotypic manifestations of the elements constituting the face. Based on the proposal presented here, the construction of a protocol for the process of recognizing and identifying an individual can be implemented computationally. Copyright © 2017. Published by Elsevier Ltd.

  16. Live sequence charts to model medical information

    Directory of Open Access Journals (Sweden)

    Aslakson Eric

    2012-06-01

    Full Text Available Abstract Background Medical records accumulate data concerning patient health and the natural history of disease progression. However, methods to mine information systematically in a form other than an electronic health record are not yet available. The purpose of this study was to develop an object modeling technique as a first step towards a formal database of medical records. Method Live Sequence Charts (LSC were used to formalize the narrative text obtained during a patient interview. LSCs utilize a visual scenario-based programming language to build object models. LSC extends the classical language of UML message sequence charts (MSC, predominantly through addition of modalities and providing executable semantics. Inter-object scenarios were defined to specify natural history event interactions and different scenarios in the narrative text. Result A simulated medical record was specified into LSC formalism by translating the text into an object model that comprised a set of entities and events. The entities described the participating components (i.e., doctor, patient and record and the events described the interactions between elements. A conceptual model is presented to illustrate the approach. An object model was generated from data extracted from an actual new patient interview, where the individual was eventually diagnosed as suffering from Chronic Fatigue Syndrome (CFS. This yielded a preliminary formal designated vocabulary for CFS development that provided a basis for future formalism of these records. Conclusions Translation of medical records into object models created the basis for a formal database of the patient narrative that temporally depicts the events preceding disease, the diagnosis and treatment approach. The LSCs object model of the medical narrative provided an intuitive, visual representation of the natural history of the patient’s disease.

  17. Comparison of the visual acuity after photorefractive keratectomy using Early Treatment Diabetic Retinopathy Study Chart and E-chart.

    Science.gov (United States)

    Ghorbanhosseini, Saeedeh; Hashemi, Hassan; Jafarzadehpur, Ebrahim; Yekta, Abbasali; Khabazkhoob, Mehdi

    2016-12-01

    To compare the visual responses of post refractive surgery's patients using Early Treatment Diabetic Retinopathy Study Chart (ETDRS) and E-chart with and without color filters. The uncorrected Logarithm of the Minimum Angle of Resolution Visual Acuity (LogMAR VA) of 70 patients with a mean age of 26.2 ± 3.76 years (from 19 to 34 years) who had undergone Photorefractive Keratectomy (PRK) (the range of post operation refractive error: ±0.5 D) was measured under the light conditions of with and without asymmetrical glare by using red, green, and yellow filters and ETDRS chart and E-chart. In both light conditions of with and without glare, the mean visual acuity of the three filters in the right and left eyes was significantly better with the E-chart versus the ETDRS chart (P charts using the red filter (P = 0.30). Visual acuity measurements were different with ETDRS chart and E-chart. These two charts cannot be used interchangeably.

  18. [Statistical process control charts in perinatal mortality surveillance].

    Science.gov (United States)

    Montoya-Restrepo, Nora E; Correa-Morales, Juan C

    2009-01-01

    Applying statistical process control (SPC) charts in perinatal mortality surveillance (as an epidemiological indicator). The control charts were prepared using 51,840 births; 286 cases were produced from these births. All information came from SUSALUD between January 2004 and December 2007. Two control charts are presented; the first one's central line was considered to be the proportion of cases + 3 SD and the second one used the logits from the percentages of cases. Two control charts were prepared for monitoring perinatal mortality. The first considered the percentage of cases per month and an average of five cases per one thousand births was obtained (p=0.005). The logits were used for the second chart. Having SPC charts available for monitoring and analysing perinatal mortality will allow changes in service quality to be quickly detected and let aspects regarding the quality of the service being provided for mothers and the newborn to be evaluated. Specific interventions can also be programmed.

  19. Time geography: a model for psychiatric life charting?

    OpenAIRE

    Sunnqvist, Charlotta; Persson, Ulla; Lenntorp, B; Träskman Bendz, Lil

    2007-01-01

    Since many years, life charting has been used to describe the life course and life events of psychiatric patients. The aim of the present study was to describe and evaluate time geographic life. charts of 11 former psychiatric patients in order to promote systematic descriptions of their life events over time. Information on all events which was gathered from the life charts was analysed by manifest content analysis and reduced to four categories: information received by asking only about mov...

  20. Control charts 101: a guide to health care applications.

    Science.gov (United States)

    Amin, S G

    2001-01-01

    A control chart can be an effective way to display process data over time. It can differentiate common cause variation from special cause variation through the application of several probability-based interpretation rules. In addition, a control chart can be helpful in evaluating the effectiveness of a change. There are numerous types of control charts, and this tutorial was developed to guide the user through the selection process.

  1. The making of Andersen’s liquefaction chart

    DEFF Research Database (Denmark)

    Sabaliauskas, Tomas; Ibsen, Lars Bo

    Andersen’s chart (Andersen & Berre, 1999) is a graphical method of observing cyclic soil response. It allows observing soil response to various stress amplitudes that can lead to liquefaction, excess plastic deformation stabilizing soil response.The process of obtaining the original chart has been...... improved. Algorithm based approximation is introduced. Pore pressure dependent ultimate bearing capacity normalization factor is introduced to normalize the chart....

  2. New standardized visual acuity charts in hindi and gujarati

    Directory of Open Access Journals (Sweden)

    Khamar Bakulesh

    1996-01-01

    Full Text Available Conventional Snellen visual acuity chart has unequal difficulty score and irregular progression in letter size causing jumping effect at different visual acuity levels. There is also increase in number of letters from above downwards. Consequently one or two mistakes per line has different meaning of visual acuity at different levels. We designed a new visual acuity chart of fourteen lines in Hindi and Gujarati to facilitate standardization in visual acuity measurement. These charts are designed for use at six meter distance, and the illumination is provided from front. These charts provide a standardized way of measuring visual acuity using local languages.

  3. New standardized visual acuity charts in Hindi and Gujarati.

    Science.gov (United States)

    Khamar, B M; Vyas, U H; Desai, T M

    1996-09-01

    Conventional Snellen visual acuity chart has unequal difficulty score and irregular progression in letter size causing jumping effect at different visual acuity levels. There is also increase in number of letters from above downwards. Consequently one or two mistakes per line has different meaning of visual acuity at different levels. We designed a new visual acuity chart of fourteen lines in Hindi and Gujarati to facilitate standardization in visual acuity measurement. These charts are designed for use at six meter distance, and the illumination is provided from front. These charts provide a standardized way of measuring visual acuity using local languages.

  4. EPA Enforcement and Compliance History Online: Water Effluent Charts Downloads

    Data.gov (United States)

    U.S. Environmental Protection Agency — Detailed Discharge Monitoring Report (DMR) data supporting effluent charts for one Clean Water Act discharge permit. Includes effluent parameters, amounts discharged...

  5. EPA Enforcement and Compliance History Online: Water Effluent Charts Details

    Data.gov (United States)

    U.S. Environmental Protection Agency — Detailed Discharge Monitoring Report (DMR) data supporting effluent charts for one Clean Water Act discharge permit. Includes effluent parameters, amounts discharged...

  6. HydroHillChart – Francis module. Software used to Calculate the Hill Chart of the Francis Hydraulic Turbines

    Directory of Open Access Journals (Sweden)

    Dorian Nedelcu

    2015-07-01

    Full Text Available The paper presents the Hydro Hill Chart - Francis module application, used to calculate the hill chart of the Pelton, Francis and Kaplan hydraulic turbine models, by processing the data measured on the stand. After describing the interface and menu, the input data is graphically presented and the universal characteristic for measuring scenarios ao=const. and n11=const is calculated. Finally, the two calculated hill charts are compared through a graphical superimposition of the isolines.

  7. Growth charts for Australian children with achondroplasia.

    Science.gov (United States)

    Tofts, Louise; Das, Sandeep; Collins, Felicity; Burton, Karen L O

    2017-08-01

    Achondroplasia is an autosomal dominant disorder, the most common genetic cause of short stature in humans. Reference curves for head circumference, weight, height, and BMI are needed in clinical practice but none exist for the Australian population. This study aimed to produce head circumference, height, weight, and BMI reference percentile curves for Australian children and adolescents with achondroplasia. Measurements of head circumference, height and weight taken at clinical visits were retrospectively extracted from the electronic medical record. Age was corrected for prematurity. Patients were excluded from head circumference analysis if they had significant neurosurgical complications and from the weight and BMI analysis when they had a clinical diagnosis of overweight. Measurements were available on 138 individuals (69 males and 69 females) taken between 1970 and 2015, with over 50% collected since 2005. A total of 3,352 data points were available. The LMS method was used to produce growth charts with estimated centiles (10, 25, 50, 75, and 90th) separately for males and females. For females birth weight was 3 kg (2.5-3.5 kg), birth length 48 cm (44-50 cm) and head circumference 37.5 cm (36-39 cm), adult height was 125 cm (116-132 cm), weight 42 kg (34-54 kg), and head circumference 58 cm (55.5-60.5 cm) all 50th centile (10-90th). For males birth weight was 3.5 kg (3-4 kg), length 49 cm (46-52 cm) and head circumference 38.5 cm (36-41 cm), adult height was 134 cm (125-141 cm), weight 41 kg (24.5-57 kg) and head circumference 61 cm (58-64 cm). The curves are similar to previously published reference data from the USA and have expected population wide variation from curves from an Argentinian population. Despite limitations of our curves for adolescents (12 years and older) due to data paucity, these Australian growth charts for children and adolescents with achondroplasia will be a useful reference in clinical

  8. Mapping Long Noncoding RNA Chromatin Occupancy Using Capture Hybridization Analysis of RNA Targets (CHART).

    Science.gov (United States)

    Vance, Keith W

    2017-01-01

    Capture Hybridization Analysis of RNA Targets (CHART) has recently been developed to map the genome-wide binding profile of chromatin-associated RNAs. This protocol uses a small number of 22-28 nucleotide biotinylated antisense oligonucleotides, complementary to regions of the target RNA that are accessible for hybridization, to purify RNAs from a cross-linked chromatin extract. RNA-chromatin complexes are next immobilized on beads, washed, and specifically eluted using RNase H. Associated genomic DNA is then sequenced using high-throughput sequencing technologies and mapped to the genome to identify RNA-chromatin associations on a large scale. CHART-based strategies can be applied to determine the nature and extent of long noncoding RNA (long ncRNA) association with chromatin genome-wide and identify direct long ncRNA transcriptional targets.

  9. Control of wastewater using multivariate control chart

    Science.gov (United States)

    Nugraha, Jaka; Fatimah, Is; Prabowo, Rino Galang

    2017-03-01

    Wastewater treatment is a crucial process in industry cause untreated or improper treatment of wastewater may leads some problems affecting to the other parts of environmental aspects. For many kinds of wastewater treatments, the parameters of Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and the Total Suspend Solid (TSS) are usual parameters to be controlled as a standard. In this paper, the application of multivariate Hotteling T2 Individual was reported to control wastewater treatment. By using wastewater treatment data from PT. ICBP, east Java branch, while the fulfillment of quality standards are based on East Java Governor Regulation No. 72 Year 2013 on Standards of Quality of Waste Water Industry and / or Other Business Activities. The obtained results are COD and TSS has a correlation with BOD values with the correlation coefficient higher than 50%, and it is is also found that influence of the COD and TSS to BOD values are 82% and 1.9% respectively. Based on Multivariate control chart Individual T2 Hotteling, it is found that BOD-COD and BOD-TSS are each one subgroup that are outside the control limits. Thus, it can be said there is a process that is not multivariate controlled, but univariately the variables of BOD, COD and TSS are within specification (standard quality) that has been determined.

  10. Charting the history of agricultural experiments.

    Science.gov (United States)

    Parolini, Giuditta

    2015-09-01

    Agricultural experimentation is a world in constant evolution, spanning multiple scientific domains and affecting society at large. Even though the questions underpinning agricultural experiments remain largely the same, the instruments and practices for answering them have changed constantly during the twentieth century with the advent of new disciplines like molecular biology, genomics, statistics, and computing. Charting this evolving reality requires a mapping of the affinities and antinomies at work within the realm of agricultural research, and a consideration of the practices, tools and social and political structures in which agricultural experiments are grounded. Three main questions will be addressed to provide an overview of the complex world of agricultural research investigated by the special issue: What is an agricultural experiment? Who is an experimenter in agriculture? Where do agricultural experiments take place? It will become apparent that agricultural experiments have a wide relevance for human development as they touch upon concerns related to human health and nutrition, contribute to policy discussions, and can affect the social and political structures in which farming is embedded.

  11. Model based control charts in stage 1 quality control

    NARCIS (Netherlands)

    A.J. Koning (Alex)

    1999-01-01

    textabstractIn this paper a general method of constructing control charts for preliminary analysis of individual observations is presented, which is based on recursive score residuals. A simulation study shows that certain implementations of these charts are highly effective in detecting assignable

  12. Negative Binomial charts for monitoring high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    Good control charts for high quality processes are often based on the number of successes between failures. Geometric charts are simplest in this respect, but slow in recognizing moderately increased failure rates p. Improvement can be achieved by waiting until r > 1 failures have occurred, i.e. by

  13. 46 CFR Figure 1 to Part 150 - Compatibility Chart

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Compatibility Chart 1 Figure 1 to Part 150 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES Pt. 150, Fig. 1 Figure 1 to Part 150—Compatibility Chart EC02FE91.079 ...

  14. Empirical nonparametric control charts for high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For attribute data with (very) small failure rates often control charts are used which decide whether to stop or to continue each time r failures have occurred, for some r$\\geq$1. Because of the small probabilities involved, such charts are very sensitive to estimation effects. This is true in

  15. Integrated Interactive Chart as a Tool for Teaching Metabolic Pathways

    Science.gov (United States)

    Kalogiannis, Stavros; Pagkalos, Ioannis; Koufoudakis, Panagiotis; Dashi, Ino; Pontikeri, Kyriaki; Christodoulou, Constantina

    2014-01-01

    An interactive chart of energy metabolism with didactic function, complementary to the already existing metabolic maps, located at the URL www.metpath.teithe.gr is being presented. The chart illustrates the major catabolic and biosynthetic pathways of glucose, fatty acids, and aminoacids, individually as well as in an integrated view. For every…

  16. US Nuclear Regulatory Commission organization charts and functional statements

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-07-01

    This document is the US NRC organizational structure and chart as of July 1, 1996. It contains the org charts for the Commission, ACRS, ASLAB, Commission staff offices, Executive Director for Operations, Office of the Inspector General, Program offices, and regional offices.

  17. Quality Control Charts in Large-Scale Assessment Programs

    Science.gov (United States)

    Schafer, William D.; Coverdale, Bradley J.; Luxenberg, Harlan; Jin, Ying

    2011-01-01

    There are relatively few examples of quantitative approaches to quality control in educational assessment and accountability contexts. Among the several techniques that are used in other fields, Shewart charts have been found in a few instances to be applicable in educational settings. This paper describes Shewart charts and gives examples of how…

  18. Empirical nonparametric control charts for high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For attribute data with (very) small failure rates often control charts are used which decide whether to stop or to continue each time r failures have occurred, for some r ≥ 1. Because of the small probabilities involved, such charts are very sensitive to estimation effects. This is true in

  19. Nonparametric control charts for bivariate high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For attribute data with (very) low rates of defectives, attractive control charts can be based on the maximum of subsequent groups of r failure times, for some suitable r≥1, like r=5. Such charts combine good performance with often highly needed robustness, as they allow a nonparametric adaptation

  20. Control charts for location based on different sampling schemes

    NARCIS (Netherlands)

    Mehmood, R.; Riaz, M.; Does, R.J.M.M.

    2013-01-01

    Control charts are the most important statistical process control tool for monitoring variations in a process. A number of articles are available in the literature for the X̄ control chart based on simple random sampling, ranked set sampling, median-ranked set sampling (MRSS), extreme-ranked set

  1. Estimation in Shewhart control charts: effects and corrections

    NARCIS (Netherlands)

    Albers, Willem/Wim; Kallenberg, W.C.M.

    2004-01-01

    The influence of the estimation of parameters in Shewhart control charts is investigated. It is shown by simulation and asymptotics that (very) large sample sizes are needed to accurately determine control charts if estimators are plugged in. Correction terms are developed to get accurate control

  2. Do RuralMothers Comprehend the Growth Chart | Ibekwe | Nigerian ...

    African Journals Online (AJOL)

    Background: Growth chart is an educational tool to motivate mothers to take appropriate action to maintain and or improve their child's nutrition. Its ability to performthis function depends on maternal comprehension. Objective: To determinematernal comprehension of the growth chart, and also identify factors that influence it.

  3. Reliability of FAMACHA© chart for the evaluation of anaemia in ...

    African Journals Online (AJOL)

    The reliability of FAMACHA© chart for identifying anaemic goats was compared with Packed Cell Volume (PCV). The colour of the lower eyelids was graded with FAMACHA© chart based on FAMACHA© scores (FS) of 1-5. The animals were scored from severely anaemic (white or FS 5) through moderately anaemic (pink or ...

  4. Charting Northern Skies with the Aid of a Spreadsheet.

    Science.gov (United States)

    Lucas, Keith B.

    1994-01-01

    Describes two types of star charts commonly available for astronomical viewing and outlines a strategy by which teachers can have students use a computer spreadsheet to prepare their own easy-to-use star charts appropriate for the location, date, and time of viewing. (Author/MKR)

  5. 47 CFR 73.699 - TV engineering charts.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false TV engineering charts. 73.699 Section 73.699 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES RADIO BROADCAST SERVICES Television Broadcast Stations § 73.699 TV engineering charts. This section consists of the following Figures...

  6. Designing new UK-WHO growth charts: implications for health staff use and understanding of charts and growth monitoring.

    Science.gov (United States)

    Wright, Charlotte M; Sachs, Magda; Short, John; Sharp, Laura; Cameron, Kirsty; Moy, Robert J

    2012-07-01

    New pre-school UK charts have been produced incorporating the new World Health Organization growth standards based on healthy breastfed infants. This paper describes the process by which the charts and evidence-based instructions were designed and evaluated, and what it revealed about professional understanding of charts and growth monitoring. A multidisciplinary expert group drew on existing literature, new data analyses and parent focus groups as well as two series of chart-plotting workshops for health staff. The first series explored possible design features and general chart understanding. The second evaluated an advanced prototype with instructions, using plotting and interpretation of three separate scenarios on the old charts, compared with the new charts. The first plotting workshops (46 participants) allowed decisions to be made about the exact chart format, but it also revealed widespread confusion about use of adjustment for gestation and the plotting of birthweight. In the second series (78 participants), high levels of plotting inaccuracy were identified on both chart formats, with 64% of respondents making at least one major mistake. Significant neonatal weight loss was poorly recognized. While most participants recognized abnormal and normal growth patterns, 13-20% did not. Many respondents had never received any formal training in chart use. Growth charts are complex clinical tools that are, at present, poorly understood and inconsistently used. The importance of clear guidelines and formal training has now been recognized and translated into supporting educational materials (free to download at http://www.growthcharts.rcpch.ac.uk). © 2011 Blackwell Publishing Ltd.

  7. Ewmareg control chart applied in the monitoring of industrial processes

    Directory of Open Access Journals (Sweden)

    Danilo Cuzzuol Pedrini

    2011-12-01

    Full Text Available If the process quality characteristics are dependent of control variables, and these vary during the process operation, the basic assumptions of control charts are violated. If the values of the control variables are known, it’s possible to apply the regression control chart. One of the most recent works in this area is the EWMAREG chart, which is the monitoring of the standardized residuals using exponentially weighted moving average control chart. In this paper, we present a systematic application of the EWMAREG control chart in monitoring a simulated process of chemical industry. The process characteristic monitored was the corrosion rate of steel pipe in function of four process control variables. The tool applied demonstrated high potential to detect change in surveillance of corrosion rate, ensuring stability process.

  8. The EWMA control chart based on robust scale estimators

    Directory of Open Access Journals (Sweden)

    Nadia Saeed

    2016-12-01

    Full Text Available The exponentially weighted moving average (EWMA chart is very popular in statistical process control for detecting the small shifts in process mean and variance. This chart performs well under the assumption of normality but when data violate the assumption of normality, the robust approaches needed. We have developed the EWMA charts under different robust scale estimators available in literature and also compared the performance of these charts by calculating expected out-of-control points and expected widths under non-symmetric distributions (i.e. gamma and exponential. The simulation studies are being carried out for the purpose and results showed that amongst six robust estimators, the chart based on estimator Q_n relatively performed well for non-normal processes in terms of its shorter expected width and more number of expected out-of-control points which shows its sensitivity to detect the out of control signal.

  9. The p-control chart: a tool for care improvement.

    Science.gov (United States)

    Duclos, Antoine; Voirin, Nicolas

    2010-10-01

    The p-chart is a user-friendly tool for monitoring adverse events. By converting data into knowledge, it is helpful in interpreting and reducing sources of variability in care. Certain basics for developing expertise to use p-charts correctly are necessary. This paper provides key elements on how to develop and interpret a p-chart for clinical practice, how to successfully integrate this tool within a comprehensive approach, and how to report a study based on p-chart utilization. P-chart building The p-chart combines time series analysis with a graphical presentation of data by plotting successive indicator measurements in chronological order. The pragmatic choice of well-defined indicators to be monitored is essential. Exact control limits based on the binomial distribution and the incorporation of risk adjustment represent important contributions for further improving the tool's performance in health-care settings. P-chart implementation The solution needed to reduce adverse events is not available from measurement alone. The success of routine introduction of the p-chart requires investigation of the causes of indicator variations and the trying out of quality improvement initiatives. It must be supported by strong management leadership within an atmosphere of constructive evaluation. Perspectives The implementation of the p-chart into clinical practice encourages practitioners to continuously undertake a critical examination of the care delivered. Nearly a century after it was created in the manufacturing industry, the control chart now contributes to improving the quality of health-care processes and patient safety.

  10. HydroHillChart – Pelton module. Software used to Calculate the Hill Chart of the Pelton Hydraulic Turbines

    Directory of Open Access Journals (Sweden)

    Dorian Nedelcu

    2015-07-01

    Full Text Available The paper presents the HydroHillChart - Pelton module application, used to calculate the hill chart of the Pelton hydraulic turbine models, by processing the data measured on the stand. In addition, the tools offered by the application such as: interface, menu, input data, numerical and graphical results, etc. are described.

  11. Synthetic-type control charts for time-between-events monitoring.

    Directory of Open Access Journals (Sweden)

    Fang Yen Yen

    Full Text Available This paper proposes three synthetic-type control charts to monitor the mean time-between-events of a homogenous Poisson process. The first proposed chart combines an Erlang (cumulative time between events, Tr chart and a conforming run length (CRL chart, denoted as Synth-Tr chart. The second proposed chart combines an exponential (or T chart and a group conforming run length (GCRL chart, denoted as GR-T chart. The third proposed chart combines an Erlang chart and a GCRL chart, denoted as GR-Tr chart. By using a Markov chain approach, the zero- and steady-state average number of observations to signal (ANOS of the proposed charts are obtained, in order to evaluate the performance of the three charts. The optimal design of the proposed charts is shown in this paper. The proposed charts are superior to the existing T chart, Tr chart, and Synth-T chart. As compared to the EWMA-T chart, the GR-T chart performs better in detecting large shifts, in terms of the zero- and steady-state performances. The zero-state Synth-T4 and GR-Tr (r = 3 or 4 charts outperform the EWMA-T chart for all shifts, whereas the Synth-Tr (r = 2 or 3 and GR-T 2 charts perform better for moderate to large shifts. For the steady-state process, the Synth-Tr and GR-Tr charts are more efficient than the EWMA-T chart in detecting small to moderate shifts.

  12. Synthetic-Type Control Charts for Time-Between-Events Monitoring

    Science.gov (United States)

    Yen, Fang Yen; Chong, Khoo Michael Boon; Ha, Lee Ming

    2013-01-01

    This paper proposes three synthetic-type control charts to monitor the mean time-between-events of a homogenous Poisson process. The first proposed chart combines an Erlang (cumulative time between events, Tr) chart and a conforming run length (CRL) chart, denoted as Synth-Tr chart. The second proposed chart combines an exponential (or T) chart and a group conforming run length (GCRL) chart, denoted as GR-T chart. The third proposed chart combines an Erlang chart and a GCRL chart, denoted as GR-Tr chart. By using a Markov chain approach, the zero- and steady-state average number of observations to signal (ANOS) of the proposed charts are obtained, in order to evaluate the performance of the three charts. The optimal design of the proposed charts is shown in this paper. The proposed charts are superior to the existing T chart, Tr chart, and Synth-T chart. As compared to the EWMA-T chart, the GR-T chart performs better in detecting large shifts, in terms of the zero- and steady-state performances. The zero-state Synth-T4 and GR-Tr (r = 3 or 4) charts outperform the EWMA-T chart for all shifts, whereas the Synth-Tr (r = 2 or 3) and GR-T2 charts perform better for moderate to large shifts. For the steady-state process, the Synth-Tr and GR-Tr charts are more efficient than the EWMA-T chart in detecting small to moderate shifts. PMID:23755231

  13. A Computer Program to Calculate Two-Stage Short-Run Control Chart Factors for (X,MR Charts

    Directory of Open Access Journals (Sweden)

    Matthew E. Elam

    2006-04-01

    Full Text Available This paper is the second in a series of two papers that fully develops two-stage short-run (X, MR control charts. This paper describes the development and execution of a computer program that accurately calculates first- and second-stage short-run control chart factors for (X, MR charts using the equations derived in the first paper. The software used is Mathcad. The program accepts values for number of subgroups, α for the X chart, and α for the MR chart both above the upper control limit and below the lower control limit. Tables are generated for specific values of these inputs and the implications of the results are discussed. A numerical example illustrates the use of the program.

  14. Target finding with a spatially aware handheld chart display.

    Science.gov (United States)

    Ware, Colin; Arsenault, Roland

    2012-12-01

    The objective was to evaluate the use of a spatially aware handheld chart display in a comparison with a track-up fixed display configuration and to investigate how cognitive strategies vary when performing the task of matching chart symbols with environmental features under different display geometries and task constraints. Small-screen devices containing both accelerometers and magnetometers support the development of spatially aware handheld maps.These can be designed so that symbols representing targets in the external world appear in a perspective view determined by the orientation of the device. A panoramic display was used to simulate a marine environment. The task involved matching targets in the scene to symbols on simulated chart displays. In Experiment I, a spatially aware handheld chart display was compared to a fixed track-up chart display. In Experiment 2, a gaze monitoring system was added and the distance between the chart display and the scene viewpoint was varied. All respondents were faster with the handheld device. Novices were much more accurate with the handheld device. People allocated their gaze very differently if they had to move between a map display and a view of the environment. There may be important benefits to spatially aware handheld displays in reducing errors relating to common navigation tasks. Both the difficulty of spatial transformations and the allocation of attention should be considered in the design of chart displays.

  15. A comparison of methods for construction of fetal reference charts.

    Science.gov (United States)

    Nevo, Daniel; Mandel, Micha; Ein-Mor, Eliana; Shen, Ori; Ben Chetrit, Avraham; Daniel-Spiegel, Etty; Yagel, Simcha

    2016-03-30

    Reference charts for fetal measures are used for early detection of pregnancies that should be monitored closely. Construction of reference charts corresponds to estimation of quantiles of a distribution as a function of gestational age. Existing methods have been developed under various modeling assumptions, typically by fitting a polynomial regression to certain functionals of the distributions (e.g., mean, standard deviation, and quantiles). We use a large dataset to compare various existing methods for construction of reference charts. We also relax the assumptions of a parametric polynomial link between the distribution parameters and age and consider cubic splines and discretization of age in order to compare charts based on more flexible and simpler models, respectively. We compare the different methods using various tools and demonstrate the importance of considering performance measures calculated from age-stratified data. We also examine the question of sample size. We compare our charts to similar charts that have been recently published and emphasize that the source of an apparent heterogeneity should be investigated. We conclude that the choice of which method to use for construction of reference charts should take the following into account: available sample size, validity of normality assumption, and results of various performance measures. Copyright © 2015 John Wiley & Sons, Ltd.

  16. An Assessment of Statistical Process Control-Based Approaches for Charting Student Evaluation Scores

    Science.gov (United States)

    Ding, Xin; Wardell, Don; Verma, Rohit

    2006-01-01

    We compare three control charts for monitoring data from student evaluations of teaching (SET) with the goal of improving student satisfaction with teaching performance. The two charts that we propose are a modified "p" chart and a z-score chart. We show that these charts overcome some of the shortcomings of the more traditional charts…

  17. [Growth charts: Impact on the prevalence of nutritional disorders].

    Science.gov (United States)

    Polo Martín, P; Abellan, J J; Nájar Godoy, M I; Álvarez de Laviada Mulero, T

    2015-05-01

    The references used to assess child growth in Spain are the graphs of the Orbegozo Foundation and the charts of the World Health Organization (WHO). The objective of this study is to analyze the differences between the two charts for weight, height and body mass index, and assess their relevance to identify growth or nutritional problems. The values of the extreme percentiles of height, weight and body mass index for each sex from 0 to 10 years in both charts are compared. For each value Absolute differences and Z scores are calculated for each value. To evaluate the impact on the prevalence of the various nutritional or growth disorders the location of the value of the respective percentiles of in each of the charts were assessed. Significant differences were observed between the 3th percentile of height and weight, 97th of weight, and 85th and 97th of body mass index. Marked differences were observed for the extreme values of body mass index. During the first years, the Orbegozo charts overestimate the prevalence of malnutrition (between 2% and 19% depending on age and sex) compared to the WHO charts. In subsequent ages Orbegozo underestimates WHO between 0.7% and 2.89%. Orbegozo underestimates the prevalence of overweight (between 2.5% and 14.8%) compared to the WHO charts. The 97th percentile of Body mass index in the Orbegozo charts corresponds in most cases with WHO percentiles above 99.99%. The two charts analyzed have significant differences from a clinical and the public health point of view, in the estimation of overweight/obesity and malnutrition. Copyright © 2014 Asociación Española de Pediatría. Published by Elsevier España, S.L.U. All rights reserved.

  18. Tactile acuity charts: a reliable measure of spatial acuity.

    Directory of Open Access Journals (Sweden)

    Patrick Bruns

    Full Text Available For assessing tactile spatial resolution it has recently been recommended to use tactile acuity charts which follow the design principles of the Snellen letter charts for visual acuity and involve active touch. However, it is currently unknown whether acuity thresholds obtained with this newly developed psychophysical procedure are in accordance with established measures of tactile acuity that involve passive contact with fixed duration and control of contact force. Here we directly compared tactile acuity thresholds obtained with the acuity charts to traditional two-point and grating orientation thresholds in a group of young healthy adults. For this purpose, two types of charts, using either Braille-like dot patterns or embossed Landolt rings with different orientations, were adapted from previous studies. Measurements with the two types of charts were equivalent, but generally more reliable with the dot pattern chart. A comparison with the two-point and grating orientation task data showed that the test-retest reliability of the acuity chart measurements after one week was superior to that of the passive methods. Individual thresholds obtained with the acuity charts agreed reasonably with the grating orientation threshold, but less so with the two-point threshold that yielded relatively distinct acuity estimates compared to the other methods. This potentially considerable amount of mismatch between different measures of tactile acuity suggests that tactile spatial resolution is a complex entity that should ideally be measured with different methods in parallel. The simple test procedure and high reliability of the acuity charts makes them a promising complement and alternative to the traditional two-point and grating orientation thresholds.

  19. Repeatability and Agreement of Visual Acuity Using the ETDRS Number Chart, Landolt C Chart, or ETDRS Alphabet Chart in Eyes With or Without Sight-Threatening Diseases.

    Science.gov (United States)

    Chaikitmongkol, Voraporn; Nanegrungsunk, Onnisa; Patikulsila, Direk; Ruamviboonsuk, Paisan; Bressler, Neil M

    2018-01-18

    The Early Treatment Diabetic Retinopathy Study (ETDRS) alphabet chart is not feasible for measuring best-corrected visual acuity (BCVA) for individuals who are unfamiliar with the Roman alphabet. The ETDRS Landolt C chart is an alternative, but it may not reflect true BCVA among those with confusion between left and right. The ETDRS number chart might overcome these limitations, but little is known regarding its reliability. To evaluate repeatability and agreement of BCVA using the ETDRS number chart or Landolt C chart compared with ETDRS alphabet charts in healthy and diseased eyes. A cross-sectional study was conducted in Thailand from July 1, 2015, to June 30, 2016, among 154 adult Thai individuals. Those who could read Roman alphabets were classified into the following 4 groups, using 1 eye per participant: group A, which comprised 60 healthy eyes (BCVA, 20/20-20/25); group B, which comprised 40 eyes with age-related cataract, diabetic macular edema, or age-related macular degeneration (BCVA, 20/20-20/40); group C, which comprised 40 eyes with age-related cataract, diabetic macular edema, or age-related macular degeneration (BCVA, 20/50-20/100); and group D, which comprised 14 eyes with age-related cataract, diabetic macular edema, or age-related macular degeneration (BCVA, 20/125-20/200). Two standardized 4-m BCVA measurements with 3 different Precision Vision ETDRS charts (PV number, Landolt C, and alphabet), in random sequence, performed 30 minutes apart. Repeatability, agreement, and testing duration of BCVA. Of 154 Thai participants (82 women and 72 men; mean [SD] age, 52.9 [18.2] years), the ETDRS number chart had strong repeatability coefficients (group A, 0.61 [95% CI, 0.42-0.75]; group B, 0.87 [95% CI, 0.78-0.93]; group C, 0.81 [95% CI, 0.67-0.90]; and group D, 0.81 [95% CI, 0.49-0.94]). Concordance correlation coefficients between the number and alphabet charts were also strong (group A, 0.89 [95% CI, 0.82-0.93]; group B, 0.97 [95% CI, 0

  20. Risk-Adjusted Control Charts for Health Care Monitoring

    Directory of Open Access Journals (Sweden)

    Willem Albers

    2011-01-01

    the distribution involved is negative binomial. However, in health care monitoring, (groups of patients will often belong to different risk categories. In the present paper, we will show how information about category membership can be used to adjust the basic negative binomial charts to the actual risk incurred. Attention is also devoted to comparing such conditional charts to their unconditional counterparts. The latter do take possible heterogeneity into account but refrain from risk-adjustment. Note that in the risk adjusted case several parameters are involved, which will all be typically unknown. Hence, the potentially considerable estimation effects of the new charts will be investigated as well.

  1. Create dynamic charts in Microsoft Office Excel 2007 and beyond

    CERN Document Server

    Scheck, Reinhold

    2009-01-01

    Extend your Excel 2007 skills-and create more-powerful and compelling charts in less time. Guided by an Excel expert, you'll learn how to turn flat, static charts into dynamic solutions-where you can visualize and manipulate data countless ways with a simple mouse click. Get the hands-on practice and examples you need to produce your own, professional-quality results. No programming required! Maximize the impact of your ideas and data! Learn how your design decisions affect perception and comprehensionMatch the right chart type to your communication objectiveVisualize-then build-your solut

  2. Comparison of Lea Symbols chart and Sheridan Gardiner chart in assessing vision screening among pre-school children: a Malaysia perspective.

    Science.gov (United States)

    Omar, Rokiah; Hussin, Duratul Ain; Knight, Victor Feizal

    2012-03-01

    Compare the performance of Lea Symbols and Sheridan Gardiner charts against the standard test chart used to determine reduced VA during vision screening among pre-schoolers. Seven hundred seventy five pre-school participated where 389 subjects were boys and 386 subjects were girls were tested using the Lea Symbols chart and the Sheridan Gardiner chart. The mean age of the pre-school children was 5.3 +/- 0.7 years old. The Lea Symbols chart showed a higher sensitivity (97.5%) compared to the Sheridan Gardiner chart (57.1%). While the Sheridan Gardiner chart showed higher specificity (92.0%) compared to the Lea Symbols chart (45.0%). The Lea Symbols chart offers a better pick-up rate of visual impairment during a vision-screening program especially cases of amblyopia among pre-school children compared to the Sheridan Gardiner chart in Malaysia.

  3. Neonatal Diagnostics: Towards Dynamic Growth Charts of Neuro-motor control

    Directory of Open Access Journals (Sweden)

    Elizabeth B Torres

    2016-11-01

    Full Text Available Current rise of neurodevelopmental disorders, poses a critical need to detect risk early in order to rapidly intervene. One of the tools Pediatricians use to track development is the standard Growth Chart. The Growth Charts are somewhat limited in predicting possible neurodevelopmental issues. They rely on linear models and assumptions of normality for physical growth data —obscuring key statistical information about possible neurodevelopmental risk in growth data that actually has accelerated, non-linear rates-of-change and variability encompassing skewed distributions. Here we use new analytics to profile growth data from 36 newborn babies that were tracked longitudinally for 5 months. By switching to incremental (velocity-based growth charts and combining these dynamic changes with underlying fluctuations in motor performance—as they transition from spontaneous random noise to a systematic signal— we demonstrate a method to detect very early stunting in the development of voluntary neuro-motor control and to flag risk of neurodevelopmental derail.

  4. Endpoint in plasma etch process using new modified w-multivariate charts and windowed regression

    Science.gov (United States)

    Zakour, Sihem Ben; Taleb, Hassen

    2017-02-01

    Endpoint detection is very important undertaking on the side of getting a good understanding and figuring out if a plasma etching process is done in the right way, especially if the etched area is very small (0.1%). It truly is a crucial part of supplying repeatable effects in every single wafer. When the film being etched has been completely cleared, the endpoint is reached. To ensure the desired device performance on the produced integrated circuit, the high optical emission spectroscopy (OES) sensor is employed. The huge number of gathered wavelengths (profiles) is then analyzed and pre-processed using a new proposed simple algorithm named Spectra peak selection (SPS) to select the important wavelengths, then we employ wavelet analysis (WA) to enhance the performance of detection by suppressing noise and redundant information. The selected and treated OES wavelengths are then used in modified multivariate control charts (MEWMA and Hotelling) for three statistics (mean, SD and CV) and windowed polynomial regression for mean. The employ of three aforementioned statistics is motivated by controlling mean shift, variance shift and their ratio (CV) if both mean and SD are not stable. The control charts show their performance in detecting endpoint especially W-mean Hotelling chart and the worst result is given by CV statistic. As the best detection of endpoint is given by the W-Hotelling mean statistic, this statistic will be used to construct a windowed wavelet Hotelling polynomial regression. This latter can only identify the window containing endpoint phenomenon.

  5. Mixing in Shear Coaxial Jets (Briefing Charts)

    Science.gov (United States)

    2013-08-01

    stability theory for inviscid instability of a hyperbolic tangent velocity profile for free boundary layers • U(y)=0.5[1 + tanh(y)] • Chigier and Beer, 1964... Vibration , 48 (2), 1976 1. A. S. H. KWAN and N. W. M. Ko 1976 Journal of Sound and Vibration 48, 203-219. Coherent structures in subsonic coaxial jets...2. Kwan ASH and Ko WM, J. Sound and Vibration , 48 (2), 1976, Coherent structures in subsonic coaxiial jets. 3. N. W. M. KO and A. S. H. KWAN 1976

  6. Time geography: a model for psychiatric life charting?

    Science.gov (United States)

    Sunnqvist, C; Persson, U; Lenntorp, B; Träskman-Bendz, L

    2007-05-01

    Since many years, life charting has been used to describe the life course and life events of psychiatric patients. The aim of the present study was to describe and evaluate time geographic life charts of 11 former psychiatric patients in order to promote systematic descriptions of their life events over time. Information on all events which was gathered from the life charts was analysed by manifest content analysis and reduced to four categories: information received by asking only about moves, social capacity, predisposing life events and/or stressful as well as precipitating life events. Our findings showed that this kind of life charts offered a comprehensive and structured picture. They describe a detailed life situation from one time period to another, where geographical sites serve as anchors. The patients expressed satisfaction with this method of combining an interview with a time geographic life line.

  7. Monitoring obstetricians performance with statistical process control charts

    National Research Council Canada - National Science Library

    Lane; Weeks; Scholefield; Alfirevic

    2007-01-01

    ... As a `proof of principle', we have used statistical process control (SPC) charts to compare the observed complication rates for amniocentesis and ventouse delivery with the expected complication rates based on published data...

  8. The new numbers contrast sensitivity chart for contrast sensitivity measurement

    Directory of Open Access Journals (Sweden)

    Bharkbhum Khambhiphant

    2011-10-01

    Conclusions: These charts show reasonable agreement and can be used interchangeably with the MARS. It is helpful for Thai people who can only read numbers in doing the test. We can use them in routinely contrast sensitivity measurement.

  9. Grand Canyon VFR Chart - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The Federal Aviation Administration (FAA) digital-Visual Chart series is designed to meet the needs of users who require georeferenced raster images of a FAA Visual...

  10. System Behaviour Charts Inform an Understanding of Biodiversity Recovery

    Directory of Open Access Journals (Sweden)

    Simon A. Black

    2015-01-01

    Full Text Available Practitioners working with species and ecosystem recovery typically deal with the complexity of, on one hand, lack of data or data uncertainties and, on the other hand, demand for critical decision-making and intervention. The control chart methods of commercial and industrial and environmental monitoring can complement an ecological understanding of wildlife systems including those situations which incorporate human activities and land use. Systems Behaviour Charts are based upon well-established control chart methods to provide conservation managers with an approach to using existing data and enable insight to aid timely planning of conservation interventions and also complement and stimulate research into wider scientific and ecological questions. When the approach is applied to existing data sets in well-known wildlife conservation cases, the subsequent Systems Behaviour Charts and associated analytical criteria demonstrate insights which would be helpful in averting problems associated with each case example.

  11. Another Look at the EWMA Control Chart with Estimated Parameters

    NARCIS (Netherlands)

    Saleh, N.A.; Mahmoud, M.A.; Jones-Farmer, L.A.; Zwetsloot, I.; Woodall, W.H.

    2015-01-01

    The authors assess the in-control performance of the exponentially weighted moving average (EWMA) control chart in terms of the SDARL and percentiles of the ARL distribution when the process parameters are estimated.

  12. Gulf of Mexico IFR Aeronautical Chart Index - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The IFR Enroute Aeronautical Chart series is designed to meet the needs of users who require a digital version chart. This is the visual index to the charts for the...

  13. 49 CFR 236.338 - Mechanical locking required in accordance with locking sheet and dog chart.

    Science.gov (United States)

    2010-10-01

    ... locking sheet and dog chart. 236.338 Section 236.338 Transportation Other Regulations Relating to... in accordance with locking sheet and dog chart. Mechanical locking shall be in accordance with locking sheet and dog chart currently in effect. ...

  14. An Excel Add-In for Statistical Process Control Charts

    OpenAIRE

    Buttrey, Samuel E.

    2009-01-01

    Statistical process control (SPC) descibes a widely-used set of approaches used to de- tect shifts in processes in, for example, manufacturing. Among these are \\control charts". Control charts and other SPC techniques have been in use since at least the 1950s, and, because they are comparatively unsophisticated, are often used by management or op- erations personnel without formal statistical training. These personnel will often have experience with the popular spreadsheet prog...

  15. Schedule performance measurement based on statistical process control charts

    OpenAIRE

    Oleghe, Omogbai; Salonitis, Konstantinos

    2014-01-01

    In a job-shop manufacturing environment, achieving a schedule that is on target is difficult due to the dynamism of factors affecting the system, and this makes schedule performance measurement systems hard to design and implement. In the present paper, Statistical Process Control charts are directly applied to a scheduling process for the purpose of objectively measuring schedule performance. SPC charts provide an objective and timely approach to designing, implementing and mo...

  16. Bivariate copulas on the exponentially weighted moving average control chart

    Directory of Open Access Journals (Sweden)

    Sasigarn Kuvattana

    2016-10-01

    Full Text Available This paper proposes four types of copulas on the Exponentially Weighted Moving Average (EWMA control chart when observations are from an exponential distribution using a Monte Carlo simulation approach. The performance of the control chart is based on the Average Run Length (ARL which is compared for each copula. Copula functions for specifying dependence between random variables are used and measured by Kendall’s tau. The results show that the Normal copula can be used for almost all shifts.

  17. New birthweight charts according to parity and type of delivery for the Spanish population.

    Science.gov (United States)

    Terán, José Manuel; Varea, Carlos; Bernis, Cristina; Bogin, Barry; González-González, Antonio

    Birthweight by gestational age charts enable fetal growth to be evaluated in a specific population. Given that maternal profile and obstetric practice have undergone a remarkable change over the past few decades in Spain, this paper presents new Spanish reference percentile charts stratified by gender, parity and type of delivery. They have been prepared with data from the 2010-2014 period of the Spanish Birth Statistics Bulletin. Reference charts have been prepared using the LMS method, corresponding to 1,428,769 single, live births born to Spanish mothers. Percentile values and mean birth weight are compared among newborns according to gender, parity and type of delivery. Newborns to primiparous mothers show significantly lower birthweight than those born to multiparous mothers (p<0.036). Caesarean section was associated with a substantially lower birthweight in preterm births (p<0.048), and with a substantially higher birthweight for full-term deliveries (p<0.030). Prevalence of small for gestational age is significantly higher in newborns born by Caesarean section, both in primiparous (p<0.08) and multiparous mothers (p<0.027) and, conversely, the prevalence of large for gestational age among full-term births is again greater both in primiparous (p<0.035) and in multiparous mothers (p<0.007). Results support the consideration of establishing parity and type of delivery-specific birthweight references. These new charts enable a better evaluation of the impact of the demographic, reproductive and obstetric trends currently in Spain on fetal growth. Copyright © 2016 SESPAS. Publicado por Elsevier España, S.L.U. All rights reserved.

  18. North Atlantic IFR Route Planning Chart GEO-TIFF - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — North Atlantic Route Chart is designed for FAA Controllers to monitor transatlantic flights, this 5-color chart shows oceanic control areas, coastal navigation aids,...

  19. North Atlantic IFR Route Planning Chart PDF File - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — North Atlantic Route Chart is designed for FAA Controllers to monitor transatlantic flights, this 5-color chart shows oceanic control areas, coastal navigation aids,...

  20. A Combined Control Chart for Identifying Out–Of–Control Points in Multivariate Processes

    OpenAIRE

    Marroquín–Prado E.; Cantú–Sifuentes M.

    2010-01-01

    The Hotelling's T2 control chart is widely used to identify out–of–control signals in multivariate processes. However, this chart is not sensitive to small shifts in the process mean vec tor. In this work we propose a control chart to identify out–of–control signals. The proposed chart is a combination of Hotelling's T2 chart, M chart proposed by Hayter et al. (1994) and a new chart based on Principal Components. The combination of these charts identifies any type and size of change in the pr...

  1. Diagnostic value of run chart analysis: using likelihood ratios to compare run chart rules on simulated data series.

    Science.gov (United States)

    Anhøj, Jacob

    2015-01-01

    Run charts are widely used in healthcare improvement, but there is little consensus on how to interpret them. The primary aim of this study was to evaluate and compare the diagnostic properties of different sets of run chart rules. A run chart is a line graph of a quality measure over time. The main purpose of the run chart is to detect process improvement or process degradation, which will turn up as non-random patterns in the distribution of data points around the median. Non-random variation may be identified by simple statistical tests including the presence of unusually long runs of data points on one side of the median or if the graph crosses the median unusually few times. However, there is no general agreement on what defines "unusually long" or "unusually few". Other tests of questionable value are frequently used as well. Three sets of run chart rules (Anhoej, Perla, and Carey rules) have been published in peer reviewed healthcare journals, but these sets differ significantly in their sensitivity and specificity to non-random variation. In this study I investigate the diagnostic values expressed by likelihood ratios of three sets of run chart rules for detection of shifts in process performance using random data series. The study concludes that the Anhoej rules have good diagnostic properties and are superior to the Perla and the Carey rules.

  2. Statistical process control charts for monitoring military injuries.

    Science.gov (United States)

    Schuh, Anna; Canham-Chervak, Michelle; Jones, Bruce H

    2017-12-01

    An essential aspect of an injury prevention process is surveillance, which quantifies and documents injury rates in populations of interest and enables monitoring of injury frequencies, rates and trends. To drive progress towards injury reduction goals, additional tools are needed. Statistical process control charts, a methodology that has not been previously applied to Army injury monitoring, capitalise on existing medical surveillance data to provide information to leadership about injury trends necessary for prevention planning and evaluation. Statistical process control Shewhart u-charts were created for 49 US Army installations using quarterly injury medical encounter rates, 2007-2015, for active duty soldiers obtained from the Defense Medical Surveillance System. Injuries were defined according to established military injury surveillance recommendations. Charts display control limits three standard deviations (SDs) above and below an installation-specific historical average rate determined using 28 data points, 2007-2013. Charts are available in Army strategic management dashboards. From 2007 to 2015, Army injury rates ranged from 1254 to 1494 unique injuries per 1000 person-years. Installation injury rates ranged from 610 to 2312 injuries per 1000 person-years. Control charts identified four installations with injury rates exceeding the upper control limits at least once during 2014-2015, rates at three installations exceeded the lower control limit at least once and 42 installations had rates that fluctuated around the historical mean. Control charts can be used to drive progress towards injury reduction goals by indicating statistically significant increases and decreases in injury rates. Future applications to military subpopulations, other health outcome metrics and chart enhancements are suggested. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  3. A Combined Control Chart for Identifying Out–Of–Control Points in Multivariate Processes

    Directory of Open Access Journals (Sweden)

    Marroquín–Prado E.

    2010-10-01

    Full Text Available The Hotelling's T2 control chart is widely used to identify out–of–control signals in multivariate processes. However, this chart is not sensitive to small shifts in the process mean vec tor. In this work we propose a control chart to identify out–of–control signals. The proposed chart is a combination of Hotelling's T2 chart, M chart proposed by Hayter et al. (1994 and a new chart based on Principal Components. The combination of these charts identifies any type and size of change in the process mean vector. Us ing simulation and the Average Run Length (ARL, the performance of the proposed control chart is evaluated. The ARL means the average points within control before an out–of–control point is detected, The results of the simulation show that the proposed chart is more sensitive that each one of the three charts individually

  4. Comparison of reading speed with 3 different log-scaled reading charts.

    Science.gov (United States)

    Buari, Noor Halilah; Chen, Ai-Hong; Musa, Nuraini

    2014-01-01

    A reading chart that resembles real reading conditions is important to evaluate the quality of life in terms of reading performance. The purpose of this study was to compare the reading speed of UiTM Malay related words (UiTM-Mrw) reading chart with MNread Acuity Chart and Colenbrander Reading Chart. Fifty subjects with normal sight were randomly recruited through randomized sampling in this study (mean age=22.98±1.65 years). Subjects were asked to read three different near charts aloud and as quickly as possible at random sequence. The charts were the UiTM-Mrw Reading Chart, MNread Acuity Chart and Colenbrander Reading Chart, respectively. The time taken to read each chart was recorded and any errors while reading were noted. Reading performance was quantified in terms of reading speed as words per minute (wpm). The mean reading speed for UiTM-Mrw Reading Chart, MNread Acuity Chart and Colenbrander Reading Chart was 200±30wpm, 196±28wpm and 194±31wpm, respectively. Comparison of reading speed between UiTM-Mrw Reading Chart and MNread Acuity Chart showed no significant difference (t=-0.73, p=0.72). The same happened with the reading speed between UiTM-Mrw Reading Chart and Colenbrander Reading Chart (t=-0.97, p=0.55). Bland and Altman plot showed good agreement between reading speed of UiTM-Mrw Reading Chart with MNread Acuity Chart with the Colenbrander Reading Chart. UiTM-Mrw Reading Chart in Malay language is highly comparable with standardized charts and can be used for evaluating reading speed. Copyright © 2013 Spanish General Council of Optometry. Published by Elsevier Espana. All rights reserved.

  5. Growth charts for children with Ellis-van Creveld syndrome.

    Science.gov (United States)

    Verbeek, Sabine; Eilers, Paul H C; Lawrence, Kate; Hennekam, Raoul C M; Versteegh, Florens G A

    2011-02-01

    Ellis-van Creveld (EvC) syndrome is a congenital malformation syndrome with marked growth retardation. In this study, specific growth charts for EvC patients were derived to allow better follow-up of growth and earlier detection of growth patterns unusual for EvC. With the use of 235 observations of 101 EvC patients (49 males, 52 females), growth charts for males and females from 0 to 20 years of age were derived. Longitudinal and cross-sectional data were collected from an earlier review of growth data in EvC, a database of EvC patients, and from recent literature. To model the growth charts, the GAMLSS package for the R statistical program was used. Height of EvC patients was compared to healthy children using Dutch growth charts. Data are presented both on a scale for age and on a scale for the square root of age. Compared to healthy Dutch children, mean height standard deviation score values for male and female EvC patients were -3.1 and -3.0, respectively. The present growth charts should be useful in the follow-up of EvC patients. Most importantly, early detection of growth hormone deficiency, known to occur in EvC, will be facilitated.

  6. [Visual acuity measured via the Freiburg visual acuity test (FVT), Bailey Lovie chart and Landolt Ring chart].

    Science.gov (United States)

    Wesemann, Wolfgang

    2002-09-01

    If different ways for correcting refractive errors of the human eye have to be compared, accurate and reproducible measurement procedures are necessary. Binocular visual acuity of 130 students without pathologies was measured with the Freiburg Visual Acuity Test, the Bailey-Lovie chart and a Landolt ring chart (4 orientations). The reproducibility of the FVT was determined by repeated measurements. The average visual acuity was 1.93 +/- 0.03 (= 20/10.4) with the FVT, 1.82 +/- 0.03 (= 20/11) with the Landolt ring chart, and 1.48 +/- 0.02 (= 20/13.5) with the Bailey-Lovie chart. 50 % of all repeated measurements with the FVT were within an interval of +/- 0.035 logMAR from the mean value. 95 % were within +/- 0.1 logMAR. Results of earlier studies are discussed. On average, visual acuity values found with the Freiburg Visual Acuity Test were slightly larger as compared to the Landolt ring chart (difference = 0.025 logMAR). Taking the maximal difference of 0.05 logMAR tolerated by the international standard DIN EN ISO 8597 into account, both tests are equivalent. The results found with the Bailey-Lovie chart were substantially lower as compared to the Landolt ring chart (difference = 0.09 logMAR). The Freiburg Visual Acuity Test has a high reproducibility and measures visual acuity on a continuous scale that is not limited to the traditional visual acuity steps. Thus, it can be recommended as a reference procedure for comparative visual acuity studies.

  7. An Excel Add-In for Statistical Process Control Charts

    Directory of Open Access Journals (Sweden)

    Samuel E. Buttrey

    2009-06-01

    Full Text Available t shifts in processes in, for example, manufacturing. Among these are control charts".Control charts and other SPC techniques have been in use since at least the 1950s, and,because they are comparatively unsophisticated, are often used by management or op-erations personnel without formal statistical training. These personnel will often haveexperience with the popular spreadsheet program Excel, but may have less training on amainstream statistical package. Base Excel does not provide the ability to draw controlcharts directly, although add-ins for that purpose are available for purchase.We present a free add-in for Excel that draws the most common sorts of control charts.It follows the development of the textbook of Montgomery (2005, so it may be well-suited for instructional purposes.

  8. Developing charts of roof and stope support control

    Energy Technology Data Exchange (ETDEWEB)

    Churilov, A.A.; Kuzmenko, N.S.

    1982-01-01

    The ''methodology for determining the feed speed of narrow-action cutter-loaders relative to the speed of erecting individual supports in view of the geological engineering and physiological factors'' was developed by the Donetsk Coal Mining Institute. Using this methodology, the number of workers involved in support operations is determined depending on the plan orders with a specific chart of roof and support control. An inverse problem is also solved--determining the permissible load on a longwall in specific geological conditions, depending on the number of workers when they observe the requirements of the chart as well as the ergonomic and physiological requirements. The development and incorporation of roof and support control charts in accordance with the features noted makes it possible to create safe working conditions in stopes with individual supports and to increase their operational efficiency.

  9. HOTELLING'S T2 CONTROL CHARTS BASED ON ROBUST ESTIMATORS

    Directory of Open Access Journals (Sweden)

    SERGIO YÁÑEZ

    2010-01-01

    Full Text Available Under the presence of multivariate outliers, in a Phase I analysis of historical set of data, the T 2 control chart based on the usual sample mean vector and sample variance covariance matrix performs poorly. Several alternative estimators have been proposed. Among them, estimators based on the minimum volume ellipsoid (MVE and the minimum covariance determinant (MCD are powerful in detecting a reasonable number of outliers. In this paper we propose a T 2 control chart using the biweight S estimators for the location and dispersion parameters when monitoring multivariate individual observations. Simulation studies show that this method outperforms the T 2 control chart based on MVE estimators for a small number of observations.

  10. Economic design of a nonparametric EWMA control chart for location

    Directory of Open Access Journals (Sweden)

    Patil Subhash Hariba

    Full Text Available Abstract In this article, we have proposed an economic design of Exponentially Weighted Moving Average control chart based on sign statistic to control location parameter of the process. The economic performance of the chart is evaluated for different shifts in the location. It is observed that, as shift in the process location increases, sample size to detect the shift and the loss cost from the process decrease. The power of the chart increases with increasing shift. The design gives better economic/statistical performance for large shifts in the process. This economic procedure can be applied to any process having known or unknown process outcome distribution. The sensitivity of the design is also carried out to check the effect on statistical as well as economic performance of the design due to change in different time and cost parameters.

  11. Attribute Control Chart Construction Based on Fuzzy Score Number

    Directory of Open Access Journals (Sweden)

    Shiwang Hou

    2016-11-01

    Full Text Available There is much uncertainty and fuzziness in product quality attributes or quality parameters of a manufacturing process, so the traditional quality control chart can be difficult to apply. This paper proposes a fuzzy control chart. The plotted data was obtained by transforming expert scores into fuzzy numbers. Two types of nonconformity judgment rules—necessity and possibility measurement rules—are proposed. Through graphical analysis, the nonconformity judging method (i.e., assessing directly based on the shape feature of a fuzzy control chart is proposed. For four different widely used membership functions, control levels were analyzed and compared by observing gaps between the upper and lower control limits. The result of the case study validates the feasibility and reliability of the proposed approach.

  12. 48 CFR 252.245-7000 - Government-furnished mapping, charting, and geodesy property.

    Science.gov (United States)

    2010-10-01

    ... mapping, charting, and geodesy property. 252.245-7000 Section 252.245-7000 Federal Acquisition Regulations..., charting, and geodesy property. As prescribed in 245.107-70, use the following clause: Government-Furnished Mapping, Charting, and Geodesy Property (DEC 1991) (a) Definition—Mapping, charting, and geodesy (MC&G...

  13. Historical Map & Chart Collection of NOAA's Nautical Charts, Hydrographic Surveys, Topographic Surveys, Geodetic Surveys, City Plans, and Civil War Battle Maps Starting from the mid 1700's

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Historical Map and Chart Collection of the Office of Coast Survey contains over 20000 historical maps and charts from the mid 1700s through the late 1900s. These...

  14. Adherence to the Australian National Inpatient Medication Chart: the efficacy of a uniform national drug chart on improving prescription error.

    Science.gov (United States)

    Atik, Alp

    2013-10-01

    In 2006, the National Inpatient Medication Chart (NIMC) was introduced as a uniform medication chart in Australian public hospitals with the aim of reducing prescription error. The rate of regular medication prescription error in the NIMC was assessed. Data was collected using the NIMC Audit Tool and analyzed with respect to causes of error per medication prescription and per medication chart. The following prescription requirements were assessed: date, generic drug name, route of administration, dose, frequency, administration time, indication, signature, name and contact details. A total of 1877 medication prescriptions were reviewed. 1653 prescriptions (88.07%) had no contact number, 1630 (86.84%) did not have an indication, 1230 and 675 (35.96%) used a drug's trade name. Within 261 medication charts, all had at least one entry, which did not include an indication, 258 (98.85%) had at least one entry, which did not have a contact number and 200 (76.63%) had at least one entry, which used a trade name. The introduction of a uniform national medication chart is a positive step, but more needs to be done to address the root causes of prescription error. © 2012 John Wiley & Sons Ltd.

  15. Toward developing a standardized Arabic continuous text reading chart.

    Science.gov (United States)

    Alabdulkader, Balsam; Leat, Susan Jennifer

    Near visual acuity is an essential measurement during an oculo-visual assessment. Short duration continuous text reading charts measure reading acuity and other aspects of reading performance. There is no standardized version of such chart in Arabic. The aim of this study is to create sentences of equal readability to use in the development of a standardized Arabic continuous text reading chart. Initially, 109 Arabic pairs of sentences were created for use in constructing a chart with similar layout to the Colenbrander chart. They were created to have the same grade level of difficulty and physical length. Fifty-three adults and sixteen children were recruited to validate the sentences. Reading speed in correct words per minute (CWPM) and standard length words per minute (SLWPM) was measured and errors were counted. Criteria based on reading speed and errors made in each sentence pair were used to exclude sentence pairs with more outlying characteristics, and to select the final group of sentence pairs. Forty-five sentence pairs were selected according to the elimination criteria. For adults, the average reading speed for the final sentences was 166 CWPM and 187 SLWPM and the average number of errors per sentence pair was 0.21. Childrens' average reading speed for the final group of sentences was 61 CWPM and 72 SLWPM. Their average error rate was 1.71. The reliability analysis showed that the final 45 sentence pairs are highly comparable. They will be used in constructing an Arabic short duration continuous text reading chart. Copyright © 2016 Spanish General Council of Optometry. Published by Elsevier España, S.L.U. All rights reserved.

  16. Double sampling control chart for a first order autoregressive process

    Directory of Open Access Journals (Sweden)

    Fernando A. E. Claro

    2008-12-01

    Full Text Available In this paper we propose the Double Sampling control chart for monitoring processes in which the observations follow a first order autoregressive model. We consider sampling intervals that are sufficiently long to meet the rational subgroup concept. The Double Sampling chart is substantially more efficient than the Shewhart chart and the Variable Sample Size chart. To study the properties of these charts we derived closed-form expressions for the average run length (ARL taking into account the within-subgroup correlation. Numerical results show that this correlation has a significant impact on the chart properties.Neste artigo propomos o gráfico de controle de amostragem dupla para monitoramento de processos nos quais as observações seguem um modelo autoregressivo de primeira ordem. Nós consideramos intervalos de amostragem suficientemente longos em linha com o conceito de subgrupos racionais. O gráfico de controle de amostragem dupla é substancialmente mais eficiente que o Gráfico de Shewhart e do que o Gráfico com Amostra de Tamanho Variável. Para estudar as propriedades destes gráficos nós derivamos expressões de forma-fechada para o Numero Médio de Amostras até o Sinal (NMA levando em conta a correlação dentro do subgrupo. Os resultados numéricos mostram que esta correlação tem impacto significante sobre as propriedades do gráfico.

  17. Webcharts – A Web-based Charting Library for Custom Interactive Data Visualization

    Directory of Open Access Journals (Sweden)

    Nathan Bryant

    2016-07-01

    Full Text Available Webcharts is a JavaScript library built on top of D3.js that creates reusable, flexible, interactive charts that are highly customizable. Webcharts provides a method for creating commonly-used charts, including bar charts, scatterplots, and timelines, through a simple configuration scheme. Charts created with Webcharts allow users to dynamically manipulate chart data, appearance, and behavior both through callback functions and input elements that are tied to chart objects. This approach allows users to create reusable charts that range from simple static graphics to complex interactive data exploration tools with custom user interfaces, all using the same library.

  18. A New Attribute Control Chart using Multiple Dependent State Repetitive Sampling

    KAUST Repository

    Aldosari, Mansour Sattam

    2017-03-25

    In this manuscript, a new attribute control chart using multiple dependent state repetitive sampling is designed. The operational procedure and structure of the proposed control chart is given. The required measures to determine the average run length (ARL) for in-control and out-of-control processes are given. Tables of ARLs are reported for various control chart parameters. The proposed control chart is more sensitive in detecting a small shift in the process as compared to the existing attribute control charts. The simulation study shows the efficiency of the proposed chart over the existing charts. An example is given for the illustration purpose.

  19. Growth charts for children with Ellis–van Creveld syndrome

    OpenAIRE

    Verbeek, Sabine; Eilers, Paul; Lawrence, Karen; Hennekam, Raoul; Versteegh, Florens

    2010-01-01

    textabstractEllis-van Creveld (EvC) syndrome is a congenital malformation syndrome with marked growth retardation. In this study, specific growth charts for EvC patients were derived to allow better follow-up of growth and earlier detection of growth patterns unusual for EvC. With the use of 235 observations of 101 EvC patients (49 males, 52 females), growth charts for males and females from 0 to 20 years of age were derived. Longitudinal and cross-sectional data were collected from an earlie...

  20. New design chart for basic wind speeds in Brazil

    OpenAIRE

    Beck, André T.; Corrêa, Márcio R. S.

    2013-01-01

    The design charts for basic wind speeds currently in use in Brazil [1] were created in 1977, based on wind speed records from 1950 to 1974. The database covered up to 25 years of wind records obtained in 49 weather stations, totaling 919 stationyears of data. Since 1974, additional 37 years of wind records became available, but have not been incorporated in the design code. Hence, the updated wind charts proposed in this paper are long overdue. In this paper, 62 years of wind records in Brazi...

  1. Interactive SIGHT: textual access to simple bar charts

    Science.gov (United States)

    Demir, Seniz; Oliver, David; Schwartz, Edward; Elzer, Stephanie; Carberry, Sandra; Mccoy, Kathleen F.; Chester, Daniel

    2010-12-01

    Information graphics, such as bar charts and line graphs, are an important component of many articles from popular media. The majority of such graphics have an intention (a high-level message) to communicate to the graph viewer. Since the intended message of a graphic is often not repeated in the accompanying text, graphics together with the textual segments contribute to the overall purpose of an article and cannot be ignored. Unfortunately, these visual displays are provided in a format which is not readily accessible to everyone. For example, individuals with sight impairments who use screen readers to listen to documents have limited access to the graphics. This article presents a new accessibility tool, the Interactive SIGHT (Summarizing Information GrapHics Textually) system, that is intended to enable visually impaired users to access the knowledge that one would gain from viewing information graphics found on the web. The current system, which is implemented as a browser extension that works on simple bar charts, can be invoked by a user via a keystroke combination while navigating the web. Once launched, Interactive SIGHT first provides a brief summary that conveys the underlying intention of a bar chart along with the chart's most significant and salient features, and then produces history-aware follow-up responses to provide further information about the chart upon request from the user. We present two user studies that were conducted with sighted and visually impaired users to determine how effective the initial summary and follow-up responses are in conveying the informational content of bar charts, and to evaluate how easy it is to use the system interface. The evaluation results are promising and indicate that the system responses are well-structured and enable visually impaired users to answer key questions about bar charts in an easy-to-use manner. Post-experimental interviews revealed that visually impaired participants were very satisfied with

  2. A Cause-Consequence Chart of a Redundant Protection System

    DEFF Research Database (Denmark)

    Nielsen, Dan Sandvik; Platz, O.; Runge, B.

    1975-01-01

    A cause-consequence chart is applied in analysing failures of a redundant protection system (a core spray system in a nuclear power plant). It is shown how the diagram provides a basis for calculating two probability measures for malfunctioning of the protection system. The test policy of compone......A cause-consequence chart is applied in analysing failures of a redundant protection system (a core spray system in a nuclear power plant). It is shown how the diagram provides a basis for calculating two probability measures for malfunctioning of the protection system. The test policy...

  3. DASHBOARDS & CONTROL CHARTS EXPERIENCES IN IMPROVING SAFETY AT HANFORD WASHINGTON

    Energy Technology Data Exchange (ETDEWEB)

    PREVETTE, S.S.

    2006-02-27

    The aim of this paper is to demonstrate the integration of safety methodology, quality tools, leadership, and teamwork at Hanford and their significant positive impact on safe performance of work. Dashboards, Leading Indicators, Control charts, Pareto Charts, Dr. W. Edward Deming's Red Bead Experiment, and Dr. Deming's System of Profound Knowledge have been the principal tools and theory of an integrated management system. Coupled with involved leadership and teamwork, they have led to significant improvements in worker safety and protection, and environmental restoration at one of the nation's largest nuclear cleanup sites.

  4. jsGraph and jsNMR—Advanced Scientific Charting

    Directory of Open Access Journals (Sweden)

    Norman Pellet

    2014-09-01

    Full Text Available The jsGraph library is a versatile javascript library that allows advanced charting to be rendered interactively in web browsers without relying on server-side image processing. jsGraph is released under the MIT license and is free of charge. While being highly customizable through an intuitive javascript API, jsGraph is optimized to render a large quantity of data in a short amount of time. jsGraphs can display line, scatter, contour or zone series. Examples can be consulted on the project home page [1]. Customization of the chart, its axis and its series is achieved through simple but comprehensive JSON configurations.

  5. Fault detection in electric power systems based on control charts

    Directory of Open Access Journals (Sweden)

    Kisić Emilija

    2013-01-01

    Full Text Available This paper analyzes the control system of the combustion process and protection from explosions in the boiler furnace of thermal power plant using the techniques of control charts. The data from old and newly introduced system for measuring under-pressure differences in boiler furnace at unit B2, TE Nikola Tesla (TENT Obrenovac, were analyzed. The signal of undepressure difference is used for boiler protection function in thermal power plant TENT B. The results that confirm the advantages of the newly introduced system of measurements are presented. A detailed discussion about the benefits and the shortcomings of the control charts application in industrial processes are given in the paper.

  6. The application of mean control chart in managing industrial processes

    Directory of Open Access Journals (Sweden)

    Papić-Blagojević Nataša

    2013-01-01

    Full Text Available Along with the advent of mass production comes the problem of monitoring and maintaining the quality of the product, which stressed the need for the application of selected statistical and mathematical methods in the control process. The main objective of applying the methods of statistical control is continuous quality improvement through permanent monitoring of the process in order to discover the causes of errors. Shewart charts are the most popular method of statistical process control, which performs separation of controlled and uncontrolled variations along with detection of increased variations. This paper presents the example of Shewart mean control chart with application in managing industrial process.

  7. Use of National and International Growth Charts for Studying Height in European Children: Development of Up-To-Date European Height-For-Age Charts

    OpenAIRE

    Marjolein Bonthuis; van Stralen, Karlijn J.; Enrico Verrina; Alberto Edefonti; Molchanova, Elena A.; Hokken-Koelega, Anita C. S.; Franz Schaefer; Jager, Kitty J

    2012-01-01

    textabstractBackground: Growth charts based on data collected in different populations and time periods are key tools to assess children's linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed up-to-date European growth charts, and studied the effect of using different charts in a sample of growth retarded children. Methods and Findings: In an international survey we obtained 18 unique natio...

  8. Cartographic Rules and Differences in Nautical Data Visualization on Paper and Electronic Nautical Charts

    Directory of Open Access Journals (Sweden)

    Tea Duplančić Leder

    2013-04-01

    Full Text Available This paper aims to present cartographic rules for the production of paper and electronic navigational charts and main differences in compilation, visualisation and representation of nautical information. Major differences between paper nautical charts and ENC are visualisation of nautical data: colour mixing, resolution of represented nautical objects, human control of display representation and fonts and signatures and chart content are described. It is concluded that electronic navigational charts have many advantages and few shortcomings to paper navigational charts.

  9. MONITORING THE PROCESS MEAN BASED ON QUALITY CONTROL CHARTS USING ON FOLDED RANKED SET SAMPLING

    Directory of Open Access Journals (Sweden)

    Amjad Al-Nasser

    2013-02-01

    Full Text Available In this paper, we propose a new quality control chart for the sample mean based on the folded ranked set sampling (FRSS method. The new charts are compared with the classical control charts using simple random sampling (SRS and ranked set sampling (RSS. A simulation study shows that the FRSS control charts have smaller average run length (ARL compared with their counterpart charts using SRS and RSS.

  10. Cover Crop Chart: An Intuitive Educational Resource for Extension Professionals

    Science.gov (United States)

    Liebig, Mark A.; Johnson, Holly; Archer, David; Hendrickson, John; Nichols, Kristine; Schmer, Marty; Tanaka, Don

    2013-01-01

    Interest in cover crops by agricultural producers has increased the need for information regarding the suitability of crops for addressing different production and natural resource goals. To help address this need, staff at the USDA-ARS Northern Great Plains Research Laboratory developed a decision aid called the Cover Crop Chart (CCC). Visually…

  11. CHARTING THE ANATOMY PF LINGUISTIC REALITY R.P. Botha ...

    African Journals Online (AJOL)

    CHARTING. THE ANATOMY PF LINGUISTIC. REALITY. R.P. Botha. Department of Linguistics. University of Stellenbosch. Living dangerously. (Ql I represents the kind of question that should be addressed in the opening paper of a conference with the theme. 'Linguis- tics for the language professions'. (Ql I. Has linguistics.

  12. Improved binomial charts for high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For processes concerning attribute data with (very) small failure rate p, often negative binomial control charts are used. The decision whether to stop or continue is made each time r failures have occurred, for some r≥1. Finding the optimal r for detecting a given increase of p first requires

  13. Improved binomial charts for monitoring high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    2009-01-01

    For processes concerning attribute data with (very) small failure rate p, often negative binomial control charts are used. The decision whether to stop or continue is made each time r failures have occurred, for some r≥1. Finding the optimal r for detecting a given increase of p first requires

  14. Monitoring obstetricians' performance with statistical process control charts.

    Science.gov (United States)

    Lane, S; Weeks, A; Scholefield, H; Alfirevic, Z

    2007-05-01

    The main objective of this study was to pave the way towards proactive, continuous assessment of individuals and hospitals by demonstrating the application of evidence-based competency standards in maternity care using statistical performance monitoring. Retrospective study using data routinely collected by a large maternity hospital. A large teaching hospital. Clinicians who routinely perform either amniocentesis or ventouse deliveries. As a 'proof of principle', we have used statistical process control (SPC) charts to compare the observed complication rates for amniocentesis and ventouse delivery with the expected complication rates based on published data. The recorded complication rates for amniocentesis and ventouse delivery. The SPC charts identified significant variation in complication rates within the team and showed the ways in which prospective data can be used to provide continuous feedback to individuals on their performance. The study shows that statistical performance monitoring and, in particular, the use of control charts can be a valuable tool in the continuous assessment of individuals and the healthcare service being provided. The control charts provide a more immediate indication of current performance and provide an alternative to performance-based league tables for the presentation of yearly performance data.

  15. Spiking neural network-based control chart pattern recognition

    Directory of Open Access Journals (Sweden)

    Medhat H.A. Awadalla

    2012-03-01

    Full Text Available Due to an increasing competition in products, consumers have become more critical in choosing products. The quality of products has become more important. Statistical Process Control (SPC is usually used to improve the quality of products. Control charting plays the most important role in SPC. Control charts help to monitor the behavior of the process to determine whether it is stable or not. Unnatural patterns in control charts mean that there are some unnatural causes for variations in SPC. Spiking neural networks (SNNs are the third generation of artificial neural networks that consider time as an important feature for information representation and processing. In this paper, a spiking neural network architecture is proposed to be used for control charts pattern recognition (CCPR. Furthermore, enhancements to the SpikeProp learning algorithm are proposed. These enhancements provide additional learning rules for the synaptic delays, time constants and for the neurons thresholds. Simulated experiments have been conducted and the achieved results show a remarkable improvement in the overall performance compared with artificial neural networks.

  16. Control charts for high-quality processes: MAX or CUMAX?

    NARCIS (Netherlands)

    Albers, Willem/Wim

    2012-01-01

    For attribute data with (very) small failure rates control charts were introduced which are based on subsequent groups of r failure times, for some r >= 1. Within this family, it was shown to be attractive to stop once the maximum of such a group is sufficiently small, because this choice allows a

  17. Application of Special Cause Control Charts to Green Sand Process

    Directory of Open Access Journals (Sweden)

    Perzyk M.

    2015-12-01

    Full Text Available Statistical Process Control (SPC based on the well known Shewhart control charts, is widely used in contemporary manufacturing industry, including many foundries. However, the classic SPC methods require that the measured quantities, e.g. process or product parameters, are not auto-correlated, i.e. their current values do not depend on the preceding ones. For the processes which do not obey this assumption the Special Cause Control (SCC charts were proposed, utilizing the residual data obtained from the time-series analysis. In the present paper the results of application of SCC charts to a green sand processing system are presented. The tests, made on real industrial data collected in a big iron foundry, were aimed at the comparison of occurrences of out-of-control signals detected in the original data with those appeared in the residual data. It was found that application of the SCC charts reduces numbers of the signals in almost all cases It is concluded that it can be helpful in avoiding false signals, i.e. resulting from predictable factors.

  18. Control charts for high-quality processes: MAX or CUMAX?

    NARCIS (Netherlands)

    Albers, Willem/Wim

    For attribute data with (very) small failure rates control charts were introduced which are based on subsequent groups of r failure times, for some r >= 1. Within this family, it was shown to be attractive to stop once the maximum of such a group is sufficiently small, because this choice allows a

  19. Control charts for health care monitoring under overdispersion

    NARCIS (Netherlands)

    Albers, Willem/Wim

    An attractive way to control attribute data from high quality processes is to wait till r $\\geq$ 1 failures have occurred. The choice of r in such negative binomial charts is dictated by how much the failure rate is supposed to change during Out-of-Control. However, these results have been derived

  20. Development of a prehospital vital signs chart sharing system.

    Science.gov (United States)

    Nakada, Taka-aki; Masunaga, Naohisa; Nakao, Shota; Narita, Maiko; Fuse, Takashi; Watanabe, Hiroaki; Mizushima, Yasuaki; Matsuoka, Tetsuya

    2016-01-01

    Physiological parameters are crucial for the caring of trauma patients. There is a significant loss of prehospital vital signs data of patients during handover between prehospital and in-hospital teams. Effective strategies for reducing the loss remain a challenging research area. We tested whether the newly developed electronic automated prehospital vital signs chart sharing system would increase the amount of prehospital vital signs data shared with a remote trauma center prior to hospital arrival. Fifty trauma patients, transferred to a level I trauma center in Japan, were studied. The primary outcome variable was the number of prehospital vital signs shared with the trauma center prior to hospital arrival. The prehospital vital signs chart sharing system significantly increased the number of prehospital vital signs, including blood pressure, heart rate, and oxygen saturation, shared with the in-hospital team at a remote trauma center prior to patient arrival at the hospital (P prehospital vital signs during ambulance transfer between patients who had severe bleeding and non-severe bleeding within 24 hours after injury onset. Vital signs data collected during ambulance transfer via patient monitors could be automatically converted to easily visible patient charts and effectively shared with the remote trauma center prior to hospital arrival. The prehospital vital signs chart sharing system increased the number of precise vital signs shared prior to patient arrival at the hospital, which can potentially contribute to better trauma care without increasing labor and reduce information loss during clinical handover. Copyright © 2015 Elsevier Inc. All rights reserved.

  1. Individuals charts and additional tests for changes in spread

    NARCIS (Netherlands)

    Trip, Albert; Wieringa, Jaap E.

    2003-01-01

    Some authors recommend the use of an additional test for detecting increases in the spread, when using a control chart for individual observations. We examine this recommendation both in a practical situation and theoretically. Both studies show that the additional test gives somewhat more power for

  2. 40 CFR 86.343-79 - Chart reading.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Chart reading. 86.343-79 Section 86.343-79 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED... reading. (a) A computer or any other automatic data processing device(s) may be used as long as the system...

  3. Growth charts for children with Ellis-van Creveld syndrome

    NARCIS (Netherlands)

    S. Verbeek (Sabine); P.H.C. Eilers (Paul); K.A. Lawrence (Karen); R.C.M. Hennekam (Raoul); F.G. Versteegh (Florens)

    2011-01-01

    textabstractEllis-van Creveld (EvC) syndrome is a congenital malformation syndrome with marked growth retardation. In this study, specific growth charts for EvC patients were derived to allow better follow-up of growth and earlier detection of growth patterns unusual for EvC. With the use of 235

  4. Reference chart for relative weight change to detect hypernatraemic dehydration

    NARCIS (Netherlands)

    Dommelen, P. van; Wouwe, J.P. van; Breuning-Boers, J.M.; Buuren, S. van; Verkerk, P.H.

    2007-01-01

    Objective: The validity of the rule of thumb that infants may have a weight loss of 10% in the first days after birth is unknown. We assessed the validity of this and other rules to detect breast-fed infants with hypernatraemic dehydration. Design: A reference chart for relative weight change was

  5. Charting the anatomy of linguistic reality | Botha | Stellenbosch ...

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics. Journal Home · ABOUT · Advanced Search · Current Issue · Archives · Journal Home > Vol 25 (1992) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register. Charting the anatomy of linguistic reality. RP Botha. Abstract. No Abstract.

  6. US Nuclear Regulatory Commission organization charts and functional statements

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-11-01

    This document contains organization charts for the U.S. Nuclear Regulatory Commission (NRC) and for the five offices of the NRC. Function statements are provided delineating the major responsibilities and operations of each office. Organization and function are provided to the branch level. The head of each office, division, and branch is also listed.

  7. 46 CFR 184.420 - Charts and nautical publications.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Charts and nautical publications. 184.420 Section 184.420 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) VESSEL CONTROL AND MISCELLANEOUS SYSTEMS AND EQUIPMENT Navigation Equipment § 184.420...

  8. Processing Academic Language through Four Corners Vocabulary Chart Applications

    Science.gov (United States)

    Smith, Sarah; Sanchez, Claudia; Betty, Sharon; Davis, Shiloh

    2016-01-01

    4 Corners Vocabulary Charts (FCVCs) are explored as a multipurpose vehicle for processing academic language in a 5th-grade classroom. FCVCs typically display a vocabulary word, an illustration of the word, synonyms associated with the word, a sentence using a given vocabulary word, and a definition of the term in students' words. The use of…

  9. Improving the implementation of pre-laboratory flow charts ...

    African Journals Online (AJOL)

    The aim of this research was to use different assessment methods by engaging all students in pre-laboratory flow charts with check lists by taking into account rather than giving a mark for attendance for their presence, based on principles of cooperative learning method by forming groups, promoting positive ...

  10. EXIT Chart Analysis of Binary Message-Passing Decoders

    DEFF Research Database (Denmark)

    Lechner, Gottfried; Pedersen, Troels; Kramer, Gerhard

    2007-01-01

    Binary message-passing decoders for LDPC codes are analyzed using EXIT charts. For the analysis, the variable node decoder performs all computations in the L-value domain. For the special case of a hard decision channel, this leads to the well know Gallager B algorithm, while the analysis can...

  11. Behind Isotype Charts: The Design of Number-Fact Pictures

    DEFF Research Database (Denmark)

    Pedersen, Pia

    2017-01-01

    For more than 40 years, Marie Neurath designed ISOTYPE charts using pictograms as graphical units to make a variety of information more accessible for the layman. She was a transformer linking science and design by using the benefits of both worlds to meet the public’s interests. Significant...

  12. The Multi-Vari Chart -- A Systematic Approach

    NARCIS (Netherlands)

    de Mast, J.; Roes, K.C.B.; Does, R.J.M.M.

    1999-01-01

    Prior to setting up a designed experiment or setting up a monitoring system for a process most experimenters perform an exploratory study to investigate thestructure of the process' variation. Tools that are frequently used for such a study are predominantly graphical in nature.The multi-vari chart

  13. Testing for Sphericity in Phase I Control Chart Applications

    DEFF Research Database (Denmark)

    Windfeldt, Gitte Bjørg; Bisgaard, Søren

    2009-01-01

    When using (x) over bar -R charts it is a crucial assumption that the observations within samples are independent and have common variance. However, this assumption is almost never checked. We propose to use the samples gathered during the phase I study and the test for distributional sphericity...

  14. Translating Message Sequence Charts to other Process Languages using Process

    DEFF Research Database (Denmark)

    Lassen, Kristian Bisgaard; van Dongen, Boudewijn F.

    2008-01-01

    Message Sequence Charts (MSCs) are a well known language for speci- fying scenarios that describe how different actors (e.g., system components, people, or organizations) interact. MSCs are often used as a starting point for software analysts to discuss the behavior of a system with different...

  15. Biaxial charts for rectangular reinforced columns in accordance with ...

    African Journals Online (AJOL)

    linearity arising from the non-linear stress-strain relationships and the cracking of the cross-section. · As a result, the systematic production of biaxial design charts necessitates the application of numerical methods that are based on iterations.

  16. Preparation of unixaial chart for rectangular concrete-filled steel ...

    African Journals Online (AJOL)

    However, their design procedure as proposed by the relevant Ethiopian Building Code Standard, which is also a derivative of the corresponding European Standard Eurocode 4 calls for extensive numerical effort for drawing the moment -axial-force interaction charts. Furthermore, the results obtained following those ...

  17. US Nuclear Regulatory Commission organization charts and functional statements

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-08-19

    This document is the organizational chart for the US NRC. It contains organizational structure and functional statements for the following: (1) the Commission, (2) committees and boards, (3) staff offices, (4) office of the Inspector General, (5) executive director for operations, (6) program offices, and (7) regional offices.

  18. Biaxial charts for rectangular reinforced columns in accordance with ...

    African Journals Online (AJOL)

    Biaxial charts for rectangular reinforced columns in accordance with the Ethiopian building code standard EBCS-2:Part1. ... Questions about PDFs. Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

  19. The 'History and Fate of the Universe' chart debuts

    CERN Multimedia

    Yarris, L

    2003-01-01

    A chart that illustrates and summarizes what is now known about the history and fate of the universe has been developed by scientists at the Lawrence Berkeley National Laboratory in collaboration with the Contemporary Physics Education Project (CPEP). More than 11,000 copies will be distributed to high school science teachers across the nation for field-testing with their students (1 page).

  20. Fluorinated Silsesquioxanes: Structure, Solubility, and Wetting (Briefing charts)

    Science.gov (United States)

    2015-08-01

    Charts 3. DATES COVERED (From - To) July 2015-July 2015 4. TITLE AND SUBTITLE FLUORINATED SILSESQUIOXANES: STRUCTURE, SOLUBILITY , AND WETTING...FLUORINATED SILSESQUIOXANES: STRUCTURE, SOLUBILITY , AND WETTING Joseph Mabry, Andrew Guenthner, Scott Iacono, Raymond Campos, Sean Ramirez, Brian Moore...Crystalline solids • Soluble in fluorinated solvents 5DISTRIBUTION A. Approved for public release; distribution unlimited. • Spin-cast surface of FD

  1. Memory-type control charts in statistical process control

    NARCIS (Netherlands)

    Abbas, N.

    2012-01-01

    Control chart is the most important statistical tool to manage the business processes. It is a graph of measurements on a quality characteristic of the process on the vertical axis plotted against time on the horizontal axis. The graph is completed with control limits that cause variation mark. Once

  2. Robust Point Location Estimators for the EWMA Control Chart

    NARCIS (Netherlands)

    Zwetsloot, I.M.; Schoonhoven, M.; Does, R.J.M.M.

    2016-01-01

    In practice, the EWMA control chart for process monitoring is based on parameters estimated from a retrospective data set representing the process characteristic under study. This data set may contain contaminated observations, which in turn can affect the estimates and hence the control chart’s

  3. A Process Algebra Semantics for Message Sequence Chart Documents

    NARCIS (Netherlands)

    Gehrke, T.; Huhn, M.; Rensink, Arend; Wehrheim, H.

    1998-01-01

    Message Sequence Charts (MSCs) are a graphical and textual language for the specification of message passing systems, in particular telecommunication systems. MSCs are standardised by the Internal Telecommunication Union in standard Z.120, Included in the standard is a formal semantics for MSCs by

  4. An Algebraic Semantics for Message Sequence Chart Documents

    NARCIS (Netherlands)

    Budkowski, S.; Gehrke, T.; Huhn, M.; Cavalli, A.; Najm, E.; Rensink, Arend; Wehrheim, H.

    1998-01-01

    Message Sequence Charts (MSCs) are a graphical and textual language for the specification of message passing systems, in particular telecommunication systems, MSCs are standardised by the Internal Telecommunication Union in standard Z.120. Included in the standard is a formal semantics for MSCs by

  5. 14 CFR Section 7 - Chart of Profit and Loss Accounts

    Science.gov (United States)

    2010-01-01

    ... II carriers Group III carriers operating revenues and expenses Transport revenues: 01Passenger: 01... expense-net: 80.0Interest income 81 81 81 86.0Income from nontransport ventures 81 81 81 87.0Equity in... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Chart of Profit and Loss Accounts Section 7...

  6. Constant-Pressure Combustion Charts Including Effects of Diluent Addition

    Science.gov (United States)

    Turner, L Richard; Bogart, Donald

    1949-01-01

    Charts are presented for the calculation of (a) the final temperatures and the temperature changes involved in constant-pressure combustion processes of air and in products of combustion of air and hydrocarbon fuels, and (b) the quantity of hydrocarbon fuels required in order to attain a specified combustion temperature when water, alcohol, water-alcohol mixtures, liquid ammonia, liquid carbon dioxide, liquid nitrogen, liquid oxygen, or their mixtures are added to air as diluents or refrigerants. The ideal combustion process and combustion with incomplete heat release from the primary fuel and from combustible diluents are considered. The effect of preheating the mixture of air and diluents and the effect of an initial water-vapor content in the combustion air on the required fuel quantity are also included. The charts are applicable only to processes in which the final mixture is leaner than stoichiometric and at temperatures where dissociation is unimportant. A chart is also included to permit the calculation of the stoichiometric ratio of hydrocarbon fuel to air with diluent addition. The use of the charts is illustrated by numerical examples.

  7. Semiotic evaluation of Lithuania military air navigation charts

    Science.gov (United States)

    Ovodas, Donatas; Česnulevičius, Algimantas

    2014-06-01

    Research of semiotic aspects Lithuanian military air navigation charts was based on the semantic, graphic and information load analysis. The aim of semantic analysis was to determine how the conventional cartographical symbols, used in air navigation charts, correspond with carto-linguistic and carto-semiotic requirements. The analysis of all the markings was performed complex and collected by questionnaire were interviewed various respondents: pilots, cartographers and other chart users. The researches seek two aims: evaluate information and graphical load of military air navigation charts. Information load evaluated to calculate all objects and phenomenon, which was in 25 cm² of map. Charts analysis showed that in low flight charts (LFC) average information load are 4 - 5 times richer than in the operational maps. Map signs optimization on LFC has to be managed very carefully, choosing signs that can reduce the load of information and helps for the information transfer process. Graphical load of maps evaluated of aeronautical maps is not great (5 - 12%) and does not require reduction the information load and generalization of charts. Air navigation charts analysis pointed that not all air navigation sings correspond carto-semiotic requirements and must be improved. The authors suggested some new sings for military air navigation chart, which are simpler, equivalent to human psychophysical perception criteria, creates faster communication and less load on the chart. Badania semiotycznych aspektów litewskich wojskowych map żeglugi powietrznej bazowały na semantycznej, graficznej i informacyjnej analizie treści tych map. Celem analizy semantycznej było określenie na ile tradycyjne symbole kartograficzne stosowane na mapach nawigacji lotniczej są zgodne z wymogami języka kartograficznego oraz zasadami stosowania znaków kartograficznych. Powyższe analizy przeprowadzono w sposób kompleksowy, informacje zebrano za pomocą ankiet, przeprowadzając wywiady w r

  8. Improving drug chart documentation in elective surgical patient admissions.

    Science.gov (United States)

    Thompson, Alice

    2014-01-01

    National Institute for Health and Care Excellence (NICE) guidelines state that all healthcare organisations should put policies in place for medication reconciliation on admission. At Croydon University Hospital a medication history had previously been taken in Foundation Year 1 (FY1) preoperative clinics. However, when these clinics were deemed unnecessary, this opportunity for drug chart documentation was lost, along with an awareness of this responsibility among the FY1s. As a result patients were being admitted to wards without adequate drug chart documentation which resulted in a serious untoward incident occurring. This project aimed to increase awareness among FY1s of this responsibility and as a result increase drug chart documentation in postoperative elective surgical patients. The drug charts of 40 postoperative elective surgical patients admitted to all surgical wards were reviewed over a 2 week period. 12.5% (4/32) of patients taking regular medication had these correctly prescribed, with 'high risk medication omissions' found in 7.5% (3/40). Documentation of an allergy status was absent in 17.5% (7/40) of patients, including 5% (2/40) of whom had a known drug allergy. To create awareness of this responsibility, first, a presentation was given to the FY1s, second, posters to prompt action were placed on the elective surgical wards, and finally, the Director of Medical Education emailed the FY1s reiterating these facts. We then reviewed the drug charts of 45 elective postoperative patients over a 2 week period following these interventions. The results showed: correct prescription of regular medications improved to 48% (16/33); 'high risk medication omissions' reduced to 4% (2/45); documentation of allergy status on the drug charts increased to 87% (39/45); failure to document a known drug allergy on the drug chart fell to 2% (1/45); and patients with a 'high risk medication omission' or an undocumented known drug allergy decreased from 12.5% (5/40) to

  9. A customised portable LogMAR chart with adjustable chart illumination for use as a mass screening device in the rural population

    Directory of Open Access Journals (Sweden)

    Gouthaman M

    2005-01-01

    Full Text Available Aim: To develop a customised, portable, cost-effective (logarithmic minimal angle resolution LogMAR chart with adjustable illumination for use as a mass vision-screening device in the rural population. Materials and Methods : Visual acuity of 100 individuals was evaluated with a customised chart and compared with the standard Early Treatment Diabetic Retinopathy Study (ETDRS chart and Snellen′s Chart. Bland and Altman analytical techniques were used for analysis. Results: Test-retest variability of the customised chart was just a one-line difference (95% CI for agreement, and so were the results with the standard ETDRS charts; a variability of 3-line was noted with Snellen′s chart. Two-line differences were observed when comparison was made with Standard ETDRS chart and 2 to 3-line differences with Snellen′s chart. Conclusion: The customised portable LogMAR chart with adjustable illumination shows less test-retest variability and better agreement with standard ETDRS chart; therefore, it can be used as a mass vision-screening device in rural settings.

  10. TerCharts: a VBA-MS Excel multiternary and multipurpose charting utility for data analysis, presentation, and modeling in environmental and earth sciences

    Science.gov (United States)

    Esawi, E. K.

    2009-03-01

    TerCharts is a comprehensive, fast, flexible, and versatile ternary charting utility that can be used for ternary data presentation analysis and modeling across many scientific disciplines. TerCharts is developed using Microsoft (MS) Excel 2003 and Visual Basic for Applications (VBA) which is an object oriented programming language developed by MS as a tool to enhance the capabilities of MS products. The Excel-VBA interface is important because normally chemical, geochemical, and mineralogical data used in teaching and basic research are processed using Excel spreadsheets, making TerCharts a more convenient tool for generating ternary charts which in turn can be used for data presentation and analysis. Ternary charts generated by this utility can be improved, edited, and modified utilizing MS Excel’s powerful charting and editing techniques.

  11. Inaccurate Dental Charting in an Audit of 1128 General Dental Practice Records.

    Science.gov (United States)

    Brown, Nathan L; Jephcote, Victoria E L

    2017-03-01

    Fourteen dentists at different practices in the UK assessed the dental charts of 1128 patients who were new to the dentist but not new to the practice; 44% of the dental charts were found to be inaccurate. Inaccuracy of the individual practice-based charts ranged between 16% for the best performing practices to 83% for the worst: 5% of dental charts had too many teeth charted and 5% had too few teeth charted; 13% of charts had missed amalgam restorations and 18% had missed tooth-coloured restorations; 5% of charts had amalgam restorations recorded but with the surfaces incorrect (eg an MO restoration charted but a DO restoration actually present); 9% of charts had tooth-coloured restoration surfaces incorrectly recorded. For 7.5% of charts, amalgams were charted but not actually present. Other inaccuracies were also noted. The authors reinforce the requirements of the GDC, the advice of defence organizations, and the forensic importance of accurate dental charts. Clinical relevance: Dental charting forms part of the patient’s dental records, and the GDC requires dentists to maintain complete and accurate dental records.

  12. Charting and Evaluation of Environmental Microbial Monitoring Data.

    Science.gov (United States)

    Bar, Raphael

    2015-01-01

    Statistical tools are required to organize and present microbial environmental monitoring data for the purpose of evaluating it against regulatory action limits and of determining if the microbial monitoring process is in a state of control. This paper applies a known methodology of a simple and straightforward construction of control XmR (X data and moving range) charts of individual microbial counts as they are or of contamination rates derived from them, irrespective of the type of the parent data distribution and without the need to transform the data into a normal distribution. Plotting of monthly and cumulative sample contamination rates, as newly suggested by USP , is also shown. Both types of the control charts and plots allow an evaluation of the behavior of the microbial monitoring process. After addressing the magnitude of microbial counts expected in environmental monitoring samples, this paper presents the rationale behind the use of XmR charts. Employing data taken from environmental monitoring programs of pharmaceuticals manufacturing facilities, this paper analyzes examples of (1) microbial counts from passive or active air sampling in area Grade D or B or Class 100,000 in XmR charts, (2) contamination recovery rates as suggested by USP from active air samples in area Grade B and contact plates in area Grade C, and (3) instantaneous contamination rates with calculations illustrated on microbial counts of contact plates in area Grade D. Pharmaceutical companies conduct environmental monitoring programs, and samples of air (active and passive sampling) and of surfaces (contact plates) are routinely tested for microbiological quality. Thus, hundreds of microbial counts of tested environmental monitoring samples are routinely generated and recorded. Statistical tools are required to organize and present this abundant data for the purpose of evaluating it against regulatory action limits and determining if the microbial monitoring process is a state of

  13. edcc : An R Package for the Economic Design of the Control Chart

    Directory of Open Access Journals (Sweden)

    Weicheng Zhu

    2013-01-01

    Full Text Available The basic purpose of the economic design of the control charts is to find the optimum control charts parameters to minimize the process cost. In this paper, an R package, edcc (economic design of control charts, which provides a numerical method to find the optimum chart parameters is presented using the unified approach of the economic design. Also, some examples are given to illustrate how to use this package. The types of the control chart available in the edcc package are X̅, CUSUM (cumulative sum, and EWMA (exponentially-weighted moving average control charts.

  14. A Variable Sampling Interval Synthetic Xbar Chart for the Process Mean

    OpenAIRE

    Lee, Lei Yong; Khoo, Michael Boon Chong; Teh, Sin Yin; Lee, Ming Ha

    2015-01-01

    The usual practice of using a control chart to monitor a process is to take samples from the process with fixed sampling interval (FSI). In this paper, a synthetic X ? control chart with the variable sampling interval (VSI) feature is proposed for monitoring changes in the process mean. The VSI synthetic X ? chart integrates the VSI X ? chart and the VSI conforming run length (CRL) chart. The proposed VSI synthetic X ? chart is evaluated using the average time to signal (ATS) criterion. The o...

  15. Original observations-based control charts for monitoring the mean of auto-correlated processes: A comparison among modified Shewhart, modified EWMA, and ARMAST charts

    Science.gov (United States)

    Ulkhaq, M. Mujiya; Dewanta, Favian

    2017-11-01

    Conventional control charts are considered satisfied enough to monitor the observations that are assumed to be independent and identically distributed (IID). Nevertheless, in real industry environment, the process data exhibits some serial dependence or autocorrelation in which the IID assumption is violated. With the presence of autocorrelation, the control limits of the control charts should be loosened since the tight control limits can decrease the in-control average run length (ARL); thus, lead to a higher false alarm rate. This paper aims to compare the performance and investigate the relative effectiveness of three control charts: modified Shewhart (mShewhart), modified EWMA (mEWMA), and ARMAST charts, based on the original observations when the process data follows ARMA(1,1) model. The parameters of those charts are manipulated to give the in-control ARL of 370. The simulation results shows that the mShewhart chart is not completely robust to the deviation from IID assumption for small mean shifts. Although the mEWMA chart is very good at detecting small mean shift, the optimal ARMAST chart outperforms the mEWMA chart when there is autocorrelation in the process. In addition, the ARMAST chart also surpasses the mShewart in monitoring large mean shift.

  16. A Variable Sampling Interval Synthetic Xbar Chart for the Process Mean.

    Directory of Open Access Journals (Sweden)

    Lei Yong Lee

    Full Text Available The usual practice of using a control chart to monitor a process is to take samples from the process with fixed sampling interval (FSI. In this paper, a synthetic X control chart with the variable sampling interval (VSI feature is proposed for monitoring changes in the process mean. The VSI synthetic X chart integrates the VSI X chart and the VSI conforming run length (CRL chart. The proposed VSI synthetic X chart is evaluated using the average time to signal (ATS criterion. The optimal charting parameters of the proposed chart are obtained by minimizing the out-of-control ATS for a desired shift. Comparisons between the VSI synthetic X chart and the existing X, synthetic X, VSI X and EWMA X charts, in terms of ATS, are made. The ATS results show that the VSI synthetic X chart outperforms the other X type charts for detecting moderate and large shifts. An illustrative example is also presented to explain the application of the VSI synthetic X chart.

  17. A Variable Sampling Interval Synthetic Xbar Chart for the Process Mean.

    Science.gov (United States)

    Lee, Lei Yong; Khoo, Michael Boon Chong; Teh, Sin Yin; Lee, Ming Ha

    2015-01-01

    The usual practice of using a control chart to monitor a process is to take samples from the process with fixed sampling interval (FSI). In this paper, a synthetic X control chart with the variable sampling interval (VSI) feature is proposed for monitoring changes in the process mean. The VSI synthetic X chart integrates the VSI X chart and the VSI conforming run length (CRL) chart. The proposed VSI synthetic X chart is evaluated using the average time to signal (ATS) criterion. The optimal charting parameters of the proposed chart are obtained by minimizing the out-of-control ATS for a desired shift. Comparisons between the VSI synthetic X chart and the existing X, synthetic X, VSI X and EWMA X charts, in terms of ATS, are made. The ATS results show that the VSI synthetic X chart outperforms the other X type charts for detecting moderate and large shifts. An illustrative example is also presented to explain the application of the VSI synthetic X chart.

  18. Visualizing Library Statistics using Open Flash Chart 2 and Drupal

    Directory of Open Access Journals (Sweden)

    Laura K. Wiegand

    2013-01-01

    Full Text Available Libraries continue to need to demonstrate their value to stakeholders, and while statistics alone do not represent value, they are an important element. We found ourselves, and our stakeholders, uninspired by our infrequently updated bulleted list of statistics on our website and so set out to create a more dynamic and visually appealing look at our statistics. This article outlines how we used our content management system, Drupal, Open Flash Chart and custom programming to convert library statistics into Flash charts, including how to populate the graphs with dynamic data from external sources. The end result is our Library Statistics Dashboard (http://library.uncw.edu/facts_planning/dashboard that visually demonstrates the use, activity and resources in the library via interactive and visually interesting graphs.

  19. Encapsulating connections on SoC designs using ASM++ charts

    Science.gov (United States)

    de Pablo, Santiago; Herrero, Luis C.; Martínez, Fernando; Rey, Alexis B.

    This article presents a methodology to encapsulate, not only the functionality of several SoC modules, but also the connections between those modules. To achieve these results, the possibilities of Algorithmic State Machines (ASM charts) have been extended to develop a compiler. Using this approach, a SoC design becomes a set of chart boxes and links: several boxes describe parameterized modules in a hierarchical fashion, other boxes encapsulate their connections, and all boxes are linked together using simple lines. At last, a compiler processes all required files and generates the corresponding VHDL or Verilog code, valid for simulation and synthesis. A small SoC design with two DSP processors is shown as an example.

  20. APPROACHES FOR PROBLEM DIAGNOSIS VIA STATISTICAL PROCESS CONTROL CHARTS

    OpenAIRE

    KOÇER, BÜLENT; BİRGÖREN, Burak

    2010-01-01

    ABSTRACT Statistical process control charts aim  to detect out-of-control signals which indicate existence of special causes effecting the process. Once such a signal is detected, the interpretation of the signal, that is, discovering the actual causes behind the signal, rests upon the shoulders  of operators or engineers. Recently, some techniques have been developed  for making this interpretation process easier. This study presents an overview of such techniques ...

  1. Applications of Control Charts in Medicine and Epidemiology

    OpenAIRE

    Sego, Landon Hugh

    2006-01-01

    We consider two applications of control charts in health care. The first involves the comparison of four methods designed to detect an increase in the incidence rate of a rare health event, such as a congenital malformation. A number of methods have been proposed: among these are the Sets method, two modifications of the Sets method, and the CUSUM method based on the Poisson distribution. Many of the previously published comparisons of these methods used unrealistic assumptions or ignored i...

  2. Notre Dame Nuclear Database: A New Chart of Nuclides

    Science.gov (United States)

    Lee, Kevin; Khouw, Timothy; Fasano, Patrick; Mumpower, Matthew; Aprahamian, Ani

    2014-09-01

    Nuclear data is critical to research fields from medicine to astrophysics. We are creating a database, the Notre Dame Nuclear Database, which can store theoretical and experimental datasets. We place emphasis on storing metadata and user interaction with the database. Users are able to search in addition to the specific nuclear datum, the author(s), the facility where the measurements were made, the institution of the facility, and device or method/technique used. We also allow users to interact with the database by providing online search, an interactive nuclide chart, and a command line interface. The nuclide chart is a more descriptive version of the periodic table that can be used to visualize nuclear properties such as half-lives and mass. We achieve this by using D3 (Data Driven Documents), HTML, and CSS3 to plot the nuclides and color them accordingly. Search capabilities can be applied dynamically to the chart by using Python to communicate with MySQL, allowing for customization. Users can save the customized chart they create to any image format. These features provide a unique approach for researchers to interface with nuclear data. We report on the current progress of this project and will present a working demo that highlights each aspect of the aforementioned features. This is the first time that all available technologies are put to use to make nuclear data more accessible than ever before in a manner that is much easier and fully detailed. This is a first and we will make it available as open source ware.

  3. Monitoring of mechanical sugarcane harvesting through control charts

    OpenAIRE

    Voltarelli,Murilo A.; Silva,Rouverson P. da; Zerbato,Cristiano; Paixão,Carla S. S.; Tavares,Tiago de O.

    2015-01-01

    ABSTRACT Statistical process control in mechanized farming is a new way to assess operation quality. In this sense, we aimed to compare three statistical process control tools applied to losses in sugarcane mechanical harvesting to determine the best control chart template for this quality indicator. Losses were daily monitored in farms located within Triângulo Mineiro region, in Minas Gerais state, Brazil. They were carried over a period of 70 days in the 2014 harvest. At the end of the eval...

  4. The construction of control chart for PM10 functional data

    Science.gov (United States)

    Shaadan, Norshahida; Jemain, Abdul Aziz; Deni, Sayang Mohd

    2014-06-01

    In this paper, a statistical procedure to construct a control chart for monitoring air quality (PM10) using functional data is proposed. A set of daily indices that represent the daily PM10 curves were obtained using Functional Principal Component Analysis (FPCA). By means of an iterative charting procedure, a reference data set that represented a stable PM10 process was obtained. The data were then used as a reference for monitoring future data. The application of the procedure was conducted using seven-year (2004-2010) period of recorded data from the Klang air quality monitoring station located in the Klang Valley region of Peninsular Malaysia. The study showed that the control chart provided a useful visualization tool for monitoring air quality and was capable in detecting abnormality in the process system. As in the case of Klang station, the results showed that with reference to 2004-2008, the air quality (PM10) in 2010 was better than that in 2009.

  5. Congestive Heart Failure Cardiopoietic Regenerative Therapy (CHART-1) trial design.

    Science.gov (United States)

    Bartunek, Jozef; Davison, Beth; Sherman, Warren; Povsic, Thomas; Henry, Timothy D; Gersh, Bernard; Metra, Marco; Filippatos, Gerasimos; Hajjar, Roger; Behfar, Atta; Homsy, Christian; Cotter, Gad; Wijns, William; Tendera, Michal; Terzic, Andre

    2016-02-01

    Cardiopoiesis is a conditioning programme that aims to upgrade the cardioregenerative aptitude of patient-derived stem cells through lineage specification. Cardiopoietic stem cells tested initially for feasibility and safety exhibited signs of clinical benefit in patients with ischaemic heart failure (HF) warranting definitive evaluation. Accordingly, CHART-1 is designed as a large randomized, sham-controlled multicentre study aimed to validate cardiopoietic stem cell therapy. Patients (n = 240) with chronic HF secondary to ischaemic heart disease, reduced LVEF (Heart Failure Questionnaire score, 6 min walk test, LV end-systolic volume, and LVEF at 9 months. The secondary efficacy endpoint is the time to cardiovascular death or worsening HF at 12 months. Safety endpoints include mortality, readmissions, aborted sudden deaths, and serious adverse events at 12 and 24 months. The CHART-1 clinical trial is powered to examine the therapeutic impact of lineage-directed stem cells as a strategy to achieve cardiac regeneration in HF populations. On completion, CHART-1 will offer a definitive evaluation of the efficacy and safety of cardiopoietic stem cells in the treatment of chronic ischaemic HF. NCT01768702. © 2015 The Authors European Journal of Heart Failure © 2015 European Society of Cardiology.

  6. Recognition of control chart patterns with incomplete samples

    Science.gov (United States)

    Miftah Abdelrahman Senoussi, Ahmed; Masood, Ibrahim; Nasrull Abdol Rahman, Mohd; Fahrul Hassan, Mohd

    2017-08-01

    In quality control, automated recognition of statistical process control (SPC) chart patterns is an effective technique for monitoring unnatural variation (UV) in manufacturing process. In most studies, focus was given on complete patterns by assuming there is no constrain in the SPC samples. Nevertheless, there is in-practice case whereby the SPC samples cannot be captured properly due to measurement sensor error or human error. Thus, this research aims to design a recognition scheme for incomplete samples pattern that will be useful for an industrial application. The design methodology involves three phases: (i) simulation of UV and SPC chart patterns, (ii) design of pattern recognition scheme, and (iii) evaluation of performance recognition. It involves modelling of the simulated SPC samples in bivariate quality control, raw data input representation, and recognizer training and testing. The proposed technique indicates a high recognition accuracy (normal pattern = 99.5%, shift patterns = 97.5%). This research will provide a new perspective in SPC charting scheme when dealing with constraint in terms of incomplete samples, which is greatly useful for an industrial practitioner in finding the solution for corrective action.

  7. SpeckTackle: JavaScript charts for spectroscopy.

    Science.gov (United States)

    Beisken, Stephan; Conesa, Pablo; Haug, Kenneth; Salek, Reza M; Steinbeck, Christoph

    2015-01-01

    Spectra visualisation from methods such as mass spectroscopy, infrared spectroscopy or nuclear magnetic resonance is an essential part of every web-facing spectral resource. The development of an intuitive and versatile visualisation tool is a time- and resource-intensive task, however, most databases use their own embedded viewers and new databases continue to develop their own viewers. We present SpeckTackle, a custom-tailored JavaScript charting library for spectroscopy in life sciences. SpeckTackle is cross-browser compatible and easy to integrate into existing resources, as we demonstrate for the MetaboLights database. Its default chart types cover common visualisation tasks following the de facto 'look and feel' standards for spectra visualisation. SpeckTackle is released under GNU LGPL to encourage uptake and reuse within the community. The latest version of the library including examples and documentation on how to use and extend the library with additional chart types is available online in its public repository.

  8. Accurate representation of interference colours (Michel-Lévy chart): from rendering to image colour correction.

    Science.gov (United States)

    Linge Johnsen, S A; Bollmann, J; Lee, H W; Zhou, Y

    2017-09-21

    Here a work flow towards an accurate representation of interference colours (Michel-Lévy chart) digitally captured on a polarised light microscope using dry and oil immersion objectives is presented. The work flow includes accurate rendering of interference colours considering the colour temperature of the light source of the microscope and chromatic adaptation to white points of RGB colour spaces as well as the colour correction of the camera using readily available colour targets. The quality of different colour correction profiles was tested independently on an IT8.7/1 target. The best performing profile was using the XYZ cLUT algorithm and it revealed a ΔE00 of 1.9 (6.4 no profile) at 5× and 1.1 (8.4 no profile) at 100× magnification, respectively. The overall performance of the workflow was tested by comparing rendered interference colours with colour-corrected images of a quartz wedge captured over a retardation range from 80-2500 nm at 5× magnification. Uncorrected images of the quartz wedge in sRGB colour space revealed a mean ΔE00 of 12.3, which could be reduced to a mean of 4.9 by applying a camera correction profile based on an IT8.7/1 target and the Matrix only algorithm (ΔE00 colour differences imperceptible by the human eye). ΔE00 varied significantly over the retardation range of 80-2500 nm of the quartz wedge, but the reasons for this variation is not well understood and the quality of colour correction might be further improved in future by using custom made colour targets specifically designed for the analysis of high-order interference colours. © 2017 The Authors Journal of Microscopy © 2017 Royal Microscopical Society.

  9. 46 CFR Appendix A to Part 501 - Federal Maritime Commission Organization Chart

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 9 2010-10-01 2010-10-01 false Federal Maritime Commission Organization Chart A Appendix A to Part 501 Shipping FEDERAL MARITIME COMMISSION GENERAL AND ADMINISTRATIVE PROVISIONS THE... Organization Chart ER03JN10.006 ...

  10. 56-Day Complete Set of all of the Digital Enroute Charts - Aeronautical Information Services Digital Products

    Data.gov (United States)

    Department of Transportation — The following ZIP files contain all of the Digital Enroute charts, except for Caribbean charts, for a given effective date range. Due to the large file sizes, it is...

  11. Comparison of control charts for monitoring clinical performance using binary data.

    Science.gov (United States)

    Neuburger, Jenny; Walker, Kate; Sherlaw-Johnson, Chris; van der Meulen, Jan; Cromwell, David A

    2017-11-01

    Time series charts are increasingly used by clinical teams to monitor their performance, but statistical control charts are not widely used, partly due to uncertainty about which chart to use. Although there is a large literature on methods, there are few systematic comparisons of charts for detecting changes in rates of binary clinical performance data. We compared four control charts for binary data: the Shewhart p-chart; the exponentially weighted moving average (EWMA) chart; the cumulative sum (CUSUM) chart; and the g-chart. Charts were set up to have the same long-term false signal rate. Chart performance was then judged according to the expected number of patients treated until a change in rate was detected. For large absolute increases in rates (>10%), the Shewhart p-chart and EWMA both had good performance, although not quite as good as the CUSUM. For small absolute increases (chart is designed to efficiently detect decreases in low event rates, but it again had less good performance than the CUSUM. The Shewhart p-chart is the simplest chart to implement and interpret, and performs well for detecting large changes, which may be useful for monitoring processes of care. The g-chart is a useful complement for determining the success of initiatives to reduce low-event rates (eg, adverse events). The CUSUM may be particularly useful for faster detection of problems with patient safety leading to increases in adverse event rates.  . © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  12. Time contour expression of limited range phenomena on stack chart; Jugo chart jo deno kyokuchi gensho jikan contour

    Energy Technology Data Exchange (ETDEWEB)

    Kametani, T.

    1997-05-27

    Time contour expression of limited range phenomena on stack chart is examined for further improvement on the result of the ultimate interpretation in the seismic reflection survey. The policy is made clear from the beginning that local phenomena are to be discussed, and data prior CMP stacking is interpreted in detail. For this purpose, it is effective to make use of the time contour expression in the midpoint-offset plane simultaneously with the CMP and COP panels. For the review of data prior to CMP stacking, it is convenient to use the CMP (CDP) stacking chart in which the data is arranged methodically. In this chart, all the channels which are crude data prior to stacking are plotted on midpoint-offset coordinates, which plane is called the MOD (Midpoint Offset Domain) panel. Various panels can be chosen unrestrictedly, and their mutual relations can be easily grasped. When data points are given a time axis, they can be expressed in a time contour. Studies are conducted about the underground structure, multiple reflection paths divided by it, and characteristics of detour reflection attributable to faults. 4 refs., 9 figs.

  13. Validation of life-charts documented with the personal life-chart app - a self-monitoring tool for bipolar disorder.

    Science.gov (United States)

    Schärer, Lars O; Krienke, Ute J; Graf, Sandra-Mareike; Meltzer, Katharina; Langosch, Jens M

    2015-03-14

    Long-term monitoring in bipolar affective disorders constitutes an important therapeutic and preventive method. The present study examines the validity of the Personal Life-Chart App (PLC App), in both German and in English. This App is based on the National Institute of Mental Health's Life-Chart Method, the de facto standard for long-term monitoring in the treatment of bipolar disorders. Methods have largely been replicated from 2 previous Life-Chart studies. The participants documented Life-Charts with the PLC App on a daily basis. Clinicians assessed manic and depressive symptoms in clinical interviews using the Inventory of Depressive Symptomatology, clinician-rated (IDS-C) and the Young Mania Rating Scale (YMRS) on a monthly basis on average. Spearman correlations of the total scores of IDS-C and YMRS were calculated with both the Life-Chart functional impairment rating and mood rating documented with the PLC App. 44 subjects used the PLC App in German and 10 subjects used the PLC App in English. 118 clinical interviews from the German sub-sample and 97 from the English sub-sample were analysed separately. The results in both sub-samples are similar to previous Life-Chart validation studies. Again statistically significant high correlations were found between the Life-Chart function rating assigned through the PLC App and well-established observer-rated methods. Again correlations were weaker for the Life-Chart mood rating than for the Life-Chart function impairment. No relevant correlation was found between the Life-chart mood rating and YMRS in the German sub-sample. This study gives further evidence for the validity of the Life-Chart method as a valid tool for the recognition of both manic and depressive episodes. Documenting Life-Charts with the PLC App (English and German) does not seem to impair the validity of patient ratings.

  14. 46 CFR 150.160 - Carrying a cargo as an exception to the compatibility chart.

    Science.gov (United States)

    2010-10-01

    ... chart. 150.160 Section 150.160 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN... compatibility chart. The Operator of a vessel having on board a cargo carried as an exception under § 150.150 but not listed in Appendix I, Exceptions to the Chart, shall make sure that: (a) The Commandant (G-MSO...

  15. 46 CFR Appendix III to Part 150 - Testing Procedures for Determining Exceptions to the Chart

    Science.gov (United States)

    2010-10-01

    ... Chart III Appendix III to Part 150 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Procedures for Determining Exceptions to the Chart experimental procedure for evaluating binary chemical... is joined, while the other wire of each is connected to a strip-chart recorder. The thermocouple...

  16. Monitoring a PVC batch process with multivariate statistical process control charts

    NARCIS (Netherlands)

    Tates, A. A.; Louwerse, D. J.; Smilde, A. K.; Koot, G. L. M.; Berndt, H.

    1999-01-01

    Multivariate statistical process control charts (MSPC charts) are developed for the industrial batch production process of poly(vinyl chloride) (PVC). With these MSPC charts different types of abnormal batch behavior were detected on-line. With batch contribution plots, the probable causes of these

  17. Filled Radar Charts Should Not Be Used to Compare Social Indicators

    Science.gov (United States)

    Feldman, Roger

    2013-01-01

    The use of "radar charts" is an increasingly popular way to present spatial data in a visually interesting format. Some authors recommend using "filled radar charts" to compare the performance of observational units. Filled radar charts are not appropriate for such comparisons because the size of the area within the polygon is not invariant to the…

  18. Examining Teachers' Behavioral Management Charts: A Comparison of Class Dojo and Paper-Pencil Methods

    Science.gov (United States)

    Krach, S. Kathleen; McCreery, Michael P.; Rimel, Hillary

    2017-01-01

    Many teachers report using behavioral management charts in their classrooms as a means of managing student behaviors, but little is known about exactly what behaviors teachers are charting, or specifically how. Misunderstanding over how real-world teachers maintain behavioral charts may cause miscommunication between the teacher and the school…

  19. Three-Dimensional Nuclear Chart--Understanding Nuclear Physics and Nucleosynthesis in Stars

    Science.gov (United States)

    Koura, Hiroyuki

    2014-01-01

    Three-dimensional (3D) nuclear charts were created using toy blocks, which represent the atomic masses per nucleon number and the total half-lives for each nucleus in the entire region of the nuclear mass. The bulk properties of the nuclei can be easily understood by using these charts. Subsequently, these charts were used in outreach activities…

  20. Factors Contributing to Discrepancy Between Visual Acuity Fractions Derived From a Snellen Chart and Letter Scores on the Early Treatment Diabetic Retinopathy Study Chart.

    Science.gov (United States)

    Chen, Fred K; Agelis, Lillian Evangelia; Peh, Khaik K; Teong, Joanne; Wong, Evan Norman Xi Ming

    2014-01-01

    To report factors influencing the relationship between visual acuity (VA) fractions measured on Snellen chart and letter scores on the Early Treatment Diabetic Retinopathy Study (ETDRS) chart. This was a retrospective review from a single ophthalmology outpatient clinic. All patients had routine consecutive VA testing in the right eye using a Snellen chart (1-6 m) and the ETDRS chart (4 m and/or 1 m), by the same optometrist, using a standardized testing protocol for each chart. Both acuity fractions and letter scores were converted to their equivalent logarithm of minimum angle of resolution (logMAR) for comparison. Multiple regression analysis was performed. A total of 237 patients with a wide range of ocular disease and VAs were enrolled. Mean age was 63 years (range, 18-95 years). Recorded VA (logMAR) was better on Snellen chart by a mean (95% limits of agreement) of -0.07 (-0.33 to +0.18, P chart. Visual acuity level and amblyopia contributed to a small portion (17%-26%) of the total variance in the difference between logMAR equivalents derived from the 2 charts. The discrepancy in VA derived from Snellen and ETDRS charts was nonuniform across VA range. This has implications on interpretation of published studies converting Snellen fractions to logMAR for analysis and reporting of VA outcomes.

  1. Max control chart with adaptive sample sizes for jointly monitoring process mean and standard deviation

    OpenAIRE

    Ching Chun Huang

    2014-01-01

    This paper develops the two-state and three-state adaptive sample size control schemes based on the Max chart to simultaneously monitor the process mean and standard deviation. Since the Max chart is a single variables control chart where only one plotting statistic is needed, the design and operation of adaptive sample size schemes for this chart will be simpler than those for the joint [Xmacr ] and S charts. Three types of processes including on-target initial, off-target initial and steady...

  2. Application of machine learning and expert systems to Statistical Process Control (SPC) chart interpretation

    Science.gov (United States)

    Shewhart, Mark

    1991-01-01

    Statistical Process Control (SPC) charts are one of several tools used in quality control. Other tools include flow charts, histograms, cause and effect diagrams, check sheets, Pareto diagrams, graphs, and scatter diagrams. A control chart is simply a graph which indicates process variation over time. The purpose of drawing a control chart is to detect any changes in the process signalled by abnormal points or patterns on the graph. The Artificial Intelligence Support Center (AISC) of the Acquisition Logistics Division has developed a hybrid machine learning expert system prototype which automates the process of constructing and interpreting control charts.

  3. Monitoring of International Space Station Telemetry Using Shewhart Control Charts

    Science.gov (United States)

    Fitch, Jeffery T.; Simon, Alan L.; Gouveia, John A.; Hillin, Andrew M.; Hernandez, Steve A.

    2012-01-01

    Shewhart control charts have been established as an expedient method for analyzing dynamic, trending data in order to identify anomalous subsystem performance as soon as such performance would exceed a statistically established baseline. Additionally, this leading indicator tool integrates a selection methodology that reduces false positive indications, optimizes true leading indicator events, minimizes computer processor unit duty cycles, and addresses human factor concerns (i.e., the potential for flight-controller data overload). This innovation leverages statistical process control, and provides a relatively simple way to allow flight controllers to focus their attention on subtle system changes that could lead to dramatic off-nominal system performance. Finally, this capability improves response time to potential hardware damage and/or crew injury, thereby improving space flight safety. Shewhart control charts require normalized data. However, the telemetry from the ISS Early External Thermal Control System (EETCS) was not normally distributed. A method for normalizing the data was implemented, as was a means of selecting data windows, the number of standard deviations (Sigma Level), the number of consecutive points out of limits (Sequence), and direction (increasing or decreasing trend data). By varying these options, and treating them like dial settings, the number of nuisance alerts and leading indicators were optimized. The goal was to capture all leading indicators while minimizing the number of nuisances. Lean Six Sigma (L6S) design of experiment methodologies were employed. To optimize the results, Perl programming language was used to automate the massive amounts of telemetry data, control chart plots, and the data analysis.

  4. Chart Venture Partners' perspective on dual-use CBRNE technologies

    Science.gov (United States)

    Van Nice, C. S.; Gardner, P. J.

    2008-04-01

    Chart Venture Partners' (CVP) approach to investing in Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) detection technologies can be best understood in the context of the unique partnership between the firm's two founding institutions. CVP was founded as a partnership between the Chart Group, a New York-based merchant banking and venture capital boutique, and InSitech Incorporated, a 501(c)(3) non-profit commercial partnership intermediary for the U.S. Army's Armament Research Development and Engineering Center (ARDEC) at Picatinny Arsenal in New Jersey. The partnership between Chart Group and Insitech has yielded a new investment model. Unlike most venture funds, CVP operates with a singular focus on early-stage defense and security technologies, with the important caveat that everything we invest in must also have dual-use application in large-scale commercial markets. CVP believes that early-stage CBRNE companies require five qualities to be viable investment candidates and successful start-up companies: Great Science, Strong IP Positions, Recognized Scientific Champions, Identified Dual-Use Market Pull, and "Real World" Technical Performance Data. When earlystage CBRNE companies decide to seek venture capital and pursue higher growth dual-use business models, we often find that certain issues arise that are not always fully contemplated at the outset, and that can create gaps between what the start-up companies are offering to investors and what those investors are seeking from their potential portfolio companies. These same issues can have significant positive or negative impact on shareholder value over time, depending on how they are managed. Specifically, startups should consider carefully their strategies related to business development, market positioning, government funding, and investment syndicate formation.

  5. Use of National and International Growth Charts for Studying Height in European Children: Development of Up-To-Date European Height-For-Age Charts

    Science.gov (United States)

    Bonthuis, Marjolein; van Stralen, Karlijn J.; Verrina, Enrico; Edefonti, Alberto; Molchanova, Elena A.; Hokken-Koelega, Anita C. S.; Schaefer, Franz; Jager, Kitty J.

    2012-01-01

    Background Growth charts based on data collected in different populations and time periods are key tools to assess children’s linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed up-to-date European growth charts, and studied the effect of using different charts in a sample of growth retarded children. Methods and Findings In an international survey we obtained 18 unique national height-for-age charts from 28 European countries and compared them with charts from the World Health Organization (WHO), Euro-Growth reference, and Centers of Disease Control and Prevention (CDC). As an example, we obtained height data from 3,534 children with end-stage renal disease (ESRD) from 13 countries via the ESPN/ERA-EDTA registry, a patient group generally suffering from growth retardation. National growth charts showed a clear secular trend in height (mean height increased on average 0.6 cm/decade) and a North-South height gradient in Europe. For countries without a recent (>1990) national growth chart novel European growth charts were constructed from Northern and Southern European reference populations, reflecting geographic height differences in mean final height of 3.9 cm in boys and 3.8 cm in girls. Mean height SDS of 2- to 17-year-old ESRD patients calculated from recent national or derived European growth charts (−1.91, 95% CI: −1.97 to −1.85) was significantly lower than when using CDC or WHO growth charts (−1.55, 95% CI: −1.61 to −1.49) (Pmonitoring growth of healthy and diseased European children. PMID:22916131

  6. Use of National and International Growth Charts for Studying Height in European Children: Development of Up-To-Date European Height-For-Age Charts

    NARCIS (Netherlands)

    Bonthuis, Marjolein; van Stralen, Karlijn J.; Verrina, Enrico; Edefonti, Alberto; Molchanova, Elena A.; Hokken-Koelega, Anita C. S.; Schaefer, Franz; Jager, Kitty J.

    2012-01-01

    Background: Growth charts based on data collected in different populations and time periods are key tools to assess children's linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed up-to-date

  7. Use of national and international growth charts for studying height in european children: Development of up-to-date european height-for-age charts

    NARCIS (Netherlands)

    M. Bonthuis (Marjolein); K.J. van Stralen (Karlijn); E. Verrina (Enrico); A. Edefonti (Alberto); E.A. Molchanova (Elena); A.C.S. Hokken-Koelega (Anita); F. Schaefer (Franz); K.J. Jager (Kitty)

    2012-01-01

    textabstractBackground: Growth charts based on data collected in different populations and time periods are key tools to assess children's linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed

  8. Use of national and international growth charts for studying height in European children: development of up-to-date European height-for-age charts.

    Directory of Open Access Journals (Sweden)

    Marjolein Bonthuis

    Full Text Available BACKGROUND: Growth charts based on data collected in different populations and time periods are key tools to assess children's linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed up-to-date European growth charts, and studied the effect of using different charts in a sample of growth retarded children. METHODS AND FINDINGS: In an international survey we obtained 18 unique national height-for-age charts from 28 European countries and compared them with charts from the World Health Organization (WHO, Euro-Growth reference, and Centers of Disease Control and Prevention (CDC. As an example, we obtained height data from 3,534 children with end-stage renal disease (ESRD from 13 countries via the ESPN/ERA-EDTA registry, a patient group generally suffering from growth retardation. National growth charts showed a clear secular trend in height (mean height increased on average 0.6 cm/decade and a North-South height gradient in Europe. For countries without a recent (>1990 national growth chart novel European growth charts were constructed from Northern and Southern European reference populations, reflecting geographic height differences in mean final height of 3.9 cm in boys and 3.8 cm in girls. Mean height SDS of 2- to 17-year-old ESRD patients calculated from recent national or derived European growth charts (-1.91, 95% CI: -1.97 to -1.85 was significantly lower than when using CDC or WHO growth charts (-1.55, 95% CI: -1.61 to -1.49 (P<0.0001. CONCLUSION: Differences between height-for-age charts may reflect true population differences, but are also strongly affected by the secular trend in height. The choice of reference charts substantially affects the clinical decision whether a child is considered short-for-age. Therefore, we advocate using recent national or European height-for-age charts derived from recent national data when monitoring growth

  9. Use of national and international growth charts for studying height in European children: development of up-to-date European height-for-age charts.

    Science.gov (United States)

    Bonthuis, Marjolein; van Stralen, Karlijn J; Verrina, Enrico; Edefonti, Alberto; Molchanova, Elena A; Hokken-Koelega, Anita C S; Schaefer, Franz; Jager, Kitty J

    2012-01-01

    Growth charts based on data collected in different populations and time periods are key tools to assess children's linear growth. We analyzed the impact of geographic factors and the secular trend on height-for-age charts currently used in European populations, developed up-to-date European growth charts, and studied the effect of using different charts in a sample of growth retarded children. In an international survey we obtained 18 unique national height-for-age charts from 28 European countries and compared them with charts from the World Health Organization (WHO), Euro-Growth reference, and Centers of Disease Control and Prevention (CDC). As an example, we obtained height data from 3,534 children with end-stage renal disease (ESRD) from 13 countries via the ESPN/ERA-EDTA registry, a patient group generally suffering from growth retardation. National growth charts showed a clear secular trend in height (mean height increased on average 0.6 cm/decade) and a North-South height gradient in Europe. For countries without a recent (>1990) national growth chart novel European growth charts were constructed from Northern and Southern European reference populations, reflecting geographic height differences in mean final height of 3.9 cm in boys and 3.8 cm in girls. Mean height SDS of 2- to 17-year-old ESRD patients calculated from recent national or derived European growth charts (-1.91, 95% CI: -1.97 to -1.85) was significantly lower than when using CDC or WHO growth charts (-1.55, 95% CI: -1.61 to -1.49) (Pheight-for-age charts may reflect true population differences, but are also strongly affected by the secular trend in height. The choice of reference charts substantially affects the clinical decision whether a child is considered short-for-age. Therefore, we advocate using recent national or European height-for-age charts derived from recent national data when monitoring growth of healthy and diseased European children.

  10. Chronic heart failure in Japan: Implications of the CHART studies

    Directory of Open Access Journals (Sweden)

    Nobuyuki Shiba

    2008-02-01

    Full Text Available Nobuyuki Shiba, Hiroaki ShimokawaDepartment of Cardiovascular Medicine, Department of Evidence-Based Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai City, JapanAbstract: The prognosis of patients with chronic heart failure (CHF still remains poor, despite the recent advances in medical and surgical treatment. Furthermore, CHF is a major public health problem in most industrialized countries where the elderly population is rapidly increasing. Although the prevalence and mortality of CHF used to be relatively low in Japan, the disorder has been markedly increasing due to the rapid aging of the society and the Westernization of lifestyle that facilitates the development of coronary artery disease. The Chronic Heart Failure Analysis and Registry in the Tohoku District (CHART-1 study was one of the largest cohorts in Japan. The study has clarified the characteristics and prognosis of Japanese patients with CHF, demonstrating that their prognosis was similarly poor compared with those in Western countries. However, we still need evidence for the prevention and treatment of CHF based on the large cohort studies or randomized treatment trials in the Japanese population. Since the strategy for CHF management is now changing from treatment to prevention, a larger-size prospective cohort, called the CHART-2 study, has been initiated to evaluate the risk factors of CHF in Japan. This review summarizes the current status of CHF studies in Japan and discusses their future perspectives.Keywords: heart failure, aging, Japanese

  11. Nuclide Guide and International Chart of Nuclides - 2008

    Science.gov (United States)

    Golashvili, T.

    2009-08-01

    New versions of Nuclide Guide and Chart of the Nuclides were developed as a result of Russian-Chinese collaboration. The Nuclide Guide contains the basic information on more than 3000 radioactive and stable nuclides. The characteristics of isomers with half-lives more than 1 ms are included. For each nuclide spin, parity, mass of nuclide, magnetic moment (if available), mass excess, half-life or abundance, decay modes, branching ratios, emitted particles, energies of most intense gamma-rays and their intensities, decay energies and mean values of radiation energy per decay are given. For stable and natural long-lived nuclides cross-sections of thermal neutron induced activation are indicated. The information presented in the Guide was compiled from 5 sources: 1) ENSDF-2008, 2) atomic mass evaluation-2005 by Audi and Wapstra, 3) interactive data bases at web-sites , , 4) original evaluations of authors, 5) recent publications. The International Chart ot Nuclides was developed on the basis of information presented in Nuclide Guide.

  12. Development of a Fetal Weight Chart Using Serial Trans-Abdominal Ultrasound in an East African Population

    DEFF Research Database (Denmark)

    Schmiegelow, Christentze; Scheike, Thomas; Oesterholt, Mayke

    2012-01-01

    Objective: To produce a fetal weight chart representative of a Tanzanian population, and compare it to weight charts from Sub-Saharan Africa and the developed world. Methods: A longitudinal observational study in Northeastern Tanzania. Pregnant women were followed throughout pregnancy with serial...... trans-abdominal ultrasound. All pregnancies with pathology were excluded and a chart representing the optimal growth potential was developed using fetal weights and birth weights. The weight chart was compared to a chart from Congo, a chart representing a white population, and a chart representing...... a white population but adapted to the study population. The prevalence of SGA was assessed using all four charts. Results: A total of 2193 weight measurements from 583 fetuses/newborns were included in the fetal weight chart. Our chart had lower percentiles than all the other charts. Most importantly...

  13. Monitoring severe pre-eclampsia and eclampsia treatment in resource poor countries: skilled birth attendant perception of a new treatment and monitoring chart (LIVKAN chart).

    Science.gov (United States)

    Ameh, Charles A; Ekechi, Christine I; Tukur, Jamilu

    2012-07-01

    The lack of easy to use protocols and monitoring charts in the management of pre-eclampsia/eclampsia contribute to substandard care of women in resource poor settings. A treatment monitoring tool (LIVKAN chart) has been developed to improve the quality of care for these women. Based on feedback from skilled birth attendants (SBAs), a two page document which provides a visual record of the treatment and monitoring of women with severe pre-eclampsia/eclampsia over a 24 h period was developed. It also contains detailed treatment guidelines as well as a summary of the woman's treatment. A two page document on instructions for use of the chart was also developed. The chart design was evaluated by different level SBAs via a semi structured questionnaire. There was a 92% (109) response rate. About 30% (33) and 58% (63) of the respondents provided care to women in Primary Health Care and referral health care facilities respectively. Ninety eight percentage of respondents indicated that the chart would be of additional benefit in their care of women with pre-eclamptic/eclampsia. Seventy three percentage of respondents indicated that the chart would also be useful to lower health care facility SBAs. The design of the chart ensures that guidelines for managing/monitoring of patients are instantly available on a concise easy-to-use chart which confers added advantage over other chart designs. Having been evaluated by SBAs, acceptability and utilization in poor resource settings should be high. A study has been designed to evaluate the acceptability and effectiveness of this new monitoring chart in both BEOCs and CEOCs in two sub-Saharan African countries.

  14. Development and clinical application of a color pediatric visual acuity chart

    Directory of Open Access Journals (Sweden)

    Shu-Guo Yin

    2014-12-01

    Full Text Available AIM: To introduce a new color pediatric visual acuity chart and its clinical application.METHODS:The color pediatric visual acuity chart was designed based on principle of visual angle. The optotype on the color chart had graphics. The progression rate of optotype size between 2 lines was 10(101/2 and 1.2589. A regular geometric progression of optotype sizes and distribution was employed to arrange 8 lines with 11 optotype on the color chart. The testing distance was 3m. The visual acuity score could be recorded as logarithm of the minimum angle of resolution notation or decimal notation. The reliability of naked distant measurements with this new chart was tested in one eye of 100 children(4 ~6 years oldtaking the Chinese national standard logarithm visual acuity chart standard. RESULTS: The color pediatric visual acuity chart and logarithmic chart controls, visual acuity test results that in the two groups had no significant difference(t=1.2671, P>0.05. Two sets of vision data existed positive correlation(r=0.924, PCONCLUSION:Children are easier to accept used new color pediatric visual acuity chart to inspect vision. New chart is reliability and apply to children's vision screening.

  15. Energy predictions. [Briefs on 33 charts, figures, and graphs

    Energy Technology Data Exchange (ETDEWEB)

    Freiwald, D.A.

    1977-01-01

    Briefs describe 33 charts, graphs, and schematics offering some recent history and perspectives on the world and U.S. energy situation and the problems for survival facing the world. Of interest is Figure 28, showing the Club of Rome's model of the earth in terms of resource consumption, food, money, people, pollution, etc. A computer was asked to extend recent history into the future and results indicate a collapse of the industrialized system towards an agrarian culture around the year 2025. It is noted that the model did not consider technological initiative or man's willingness to change lifestyles. The final (33) schematic is a guesstimate of noticeable impact timescales, indicating when research projects on transition or ultimate energy sources at LASL might be expected to yield impact. (MCW)

  16. The Danish version of the Radner Reading Chart

    DEFF Research Database (Denmark)

    Munch, Inger Christine; Jørgensen, Astrid Helene Ravn; Radner, Wolfgang

    2016-01-01

    Purpose To develop 28 short texts to be used as sentence optotypes in a Danish version of the Radner Reading Chart for the measurement of reading acuity and speed. Method Forty-six short texts of comparable lexical and grammatical difficulty were constructed. The short texts were tested together...... with two longer reference texts in 100 persons with visual acuity 6/6, of which 50 were university students (age: 24.7 ± 3.1 years, 36% males) and 50 were blue-collar workers (37.2 ± 13.4 years, 54% males). Study parameters were mean reading speed and error rate per participant, and mean reading time......, variance and number of errors per short text. Results The students read the short texts faster than the blue-collar workers (184 ± 21.4 words per minute (wpm) versus 163 ± 26.3 wpm, p

  17. Percentile growth charts for biomedical studies using a porcine model.

    Science.gov (United States)

    Corson, A M; Laws, J; Laws, A; Litten, J C; Lean, I J; Clarke, L

    2008-12-01

    Increasing rates of obesity and heart disease are compromising quality of life for a growing number of people. There is much research linking adult disease with the growth and development both in utero and during the first year of life. The pig is an ideal model for studying the origins of developmental programming. The objective of this paper was to construct percentile growth curves for the pig for use in biomedical studies. The body weight (BW) of pigs was recorded from birth to 150 days of age and their crown-to-rump length was measured over the neonatal period to enable the ponderal index (PI; kg/m3) to be calculated. Data were normalised and percentile curves were constructed using Cole's lambda-mu-sigma (LMS) method for BW and PI. The construction of these percentile charts for use in biomedical research will allow a more detailed and precise tracking of growth and development of individual pigs under experimental conditions.

  18. Development of customized fetal growth charts in twins.

    Science.gov (United States)

    Ghi, Tullio; Prefumo, Federico; Fichera, Anna; Lanna, Mariano; Periti, Enrico; Persico, Nicola; Viora, Elsa; Rizzo, Giuseppe

    2017-05-01

    Twin gestations are at significantly higher risk of fetal growth restriction in comparison with singletons. Using fetal biometric charts customized for obstetrical and parental characteristics may facilitate an accurate assessment of fetal growth. The objective of the study was to construct reference charts for the gestation of fetal biometric parameters stratified by chorionicity and customized for obstetrical and parental characteristics. Fetal biometric measurements obtained from serial ultrasound examinations in uncomplicated twin pregnancies delivering after 36 weeks of gestation were collected by 19 Italian fetal medicine units under the auspices of the Società Italiana di Ecografia Ostetrica e Ginecologica. The measurements acquired in each fetus at each examination included biparietal diameter, head circumference, abdominal circumference, and femur length. Multilevel linear regression models were used to adjust for the serial ultrasonographic measurements obtained and the clustering of each fetus in twin pregnancy. The impact of maternal and paternal characteristics (height, weight, ethnicity), parity, fetal sex, and mode of conception was also considered. Models for each parameter were stratified by fetal chorionicity and compared with our previously constructed growth curves for singletons. The data set included 1781 twin pregnancies (dichorionic, n = 1289; monochorionic diamniotic, n = 492) with 8923 ultrasonographic examinations with a median of 5 (range, 2-8) observations per pregnancy in dichorionic and 6 in (range, 2-11) monochorionic pregnancies. Growth curves of twin pregnancies differed from those of singletons, and differences were more marked in monochorionic twins and during the third trimester. A significant influence of parental characteristics was found. Curves of fetal biometric measurements in twins are influenced by parental characteristics. There is a reduction in the growth rate during the third trimester. The reference limits for

  19. Beyond simple charts: Design of visualizations for big health data.

    Science.gov (United States)

    Ola, Oluwakemi; Sedig, Kamran

    2016-01-01

    Health data is often big data due to its high volume, low veracity, great variety, and high velocity. Big health data has the potential to improve productivity, eliminate waste, and support a broad range of tasks related to disease surveillance, patient care, research, and population health management. Interactive visualizations have the potential to amplify big data's utilization. Visualizations can be used to support a variety of tasks, such as tracking the geographic distribution of diseases, analyzing the prevalence of disease, triaging medical records, predicting outbreaks, and discovering at-risk populations. Currently, many health visualization tools use simple charts, such as bar charts and scatter plots, that only represent few facets of data. These tools, while beneficial for simple perceptual and cognitive tasks, are ineffective when dealing with more complex sensemaking tasks that involve exploration of various facets and elements of big data simultaneously. There is need for sophisticated and elaborate visualizations that encode many facets of data and support human-data interaction with big data and more complex tasks. When not approached systematically, design of such visualizations is labor-intensive, and the resulting designs may not facilitate big-data-driven tasks. Conceptual frameworks that guide the design of visualizations for big data can make the design process more manageable and result in more effective visualizations. In this paper, we demonstrate how a framework-based approach can help designers create novel, elaborate, non-trivial visualizations for big health data. We present four visualizations that are components of a larger tool for making sense of large-scale public health data.

  20. Bicycle injury documentation before and after charting intervention.

    Science.gov (United States)

    Monroe, Kathy; Nichols, Michele; Bates, Robin; Meredith, Mark; Hunter, John; King, William D

    2008-07-01

    Previous studies have shown that routinely completed free-text emergency department medical records contain limited information necessary for injury surveillance. We instituted an injury documentation sheet into our emergency department records to evaluate the impact on completeness of bicycle injury documentation rates. The pretest/posttest study design used E-codes to identify bicycle-related injuries. A standardized data collection tool was utilized to review these charts. Time periods before (January 1 to December 31, 2004) and after (January 1 to June 30, 2005) institution of a standardized documentation sheet were reviewed. Data were entered into the computer program, Epistat, and scores were used for comparison. Initial review (n = 667) revealed mean age of patients 8.6 years, with 46% African American and 67% male. Helmet usage was documented in 49% of the charts (81 were wearing helmets; 245 were not wearing helmets). Mechanism of injury was documented as bicycle alone in 587, bicycle versus car in 13, and bicycle versus stationary object in 64. After implementation of an injury data sheet (n = 205), it was found that the mean age was 9.24 years, with 51% African American and 43% male. Helmet use was documented in 77% of cases (26 wearing helmets; 132 not wearing). Mechanism was documented as bicycle alone in 125, bicycle versus car in 66, and bicycle versus stationary object in 14. Helmet use was much more frequently documented after the initiation of an injury documentation reminder sheet (z = 6.97; P < 0.001; 95% confidence interval, 20.2-35.8). The use of standard injury documentation prompts increased completeness of documentation. With improved documentation, more accurate injury surveillance can be performed.

  1. Clinical user experiences of observation and response charts: focus group findings of using a new format chart incorporating a track and trigger system.

    Science.gov (United States)

    Elliott, Doug; Allen, Emily; Perry, Lin; Fry, Margaret; Duffield, Christine; Gallagher, Robyn; Iedema, Rick; McKinley, Sharon; Roche, Michael

    2015-01-01

    Optimising clinical responses to deteriorating patients is an international indicator of acute healthcare quality. Observation charts incorporating track and trigger systems are an initiative to improve early identification and response to clinical deterioration. A suite of track and trigger 'Observation and Response Charts' were designed in Australia and initially tested in simulated environments. This paper reports initial clinical user experiences and views following implementation of these charts in adult general medical-surgical wards. Across eight trial sites, 44 focus groups were conducted with 218 clinical ward staff, mostly nurses, who received training and had used the charts in routine clinical practice for the preceding 2-6 weeks. Transcripts of audio recordings were analysed for emergent themes using an inductive approach. In this exploration of initial user experiences, key emergent themes were: tensions between vital sign 'ranges versus precision' to support decision making; using a standardised 'generalist chart in a range of specialist practice' areas; issues of 'clinical credibility', 'professional autonomy' and 'influences of doctors' when communicating abnormal signs; and 'permission and autonomy' when escalating care according to the protocol. Across themes, participants presented a range of positive, negative or mixed views. Benefits were identified despite charts not always being used up to their optimal design function. Participants reported tensions between chart objectives and clinical practices, revealing mismatches between design characteristics and human staff experiences. Overall, an initial view of 'increased activity/uncertain benefit' was uncovered. Findings particularly reinforced the significant influences of organisational work-based cultures, disciplinary boundaries and interdisciplinary communication on implementation of this new practice chart. Optimal use of all chart design characteristics will be possible when these

  2. [Usefulness of growth chart in children and adolescents with chronic fatigue syndrome].

    Science.gov (United States)

    Oki, Junichi; Okubo, Jun

    2007-06-01

    We presented three sheets of growth chart in children with chronic fatigue syndrome. The growth chart in 14-year-old boy (patient 1) showed decreased weight gain because of too much exercise. After that he complained nausea, abdominal pain, sleep disturbance and debilitating fatigue. The growth chart in 12-year-old girl (patient 2) revealed increased weight gain because of overeating due to the divorce of her parents. She developed syncope, sleep disturbance, and fatigue during overeating. The growth chart in 13-year-old girl (patient 3) showed decreased weight gain after she developed lymph node enlargement. We diagnosed her as autoimmune fatigue syndrome because of persistent positive antinuclear antibody. Although growth chart will not be able to detect childhood chronic fatigue syndrome prospectively, the chart may be useful for detecting some life events in these children.

  3. A NUMERICAL METHOD FOR MODELLING THE PARAMETERS Λ AND Δ OF AN EWMA CHART

    Directory of Open Access Journals (Sweden)

    Mike Cox

    2010-09-01

    Full Text Available The exponentially weighted moving average chart (EWMA is widely employed in quality control to monitor a process or to evaluate historic data. EWMA charts are designed to exhibit acceptable average run lengths both when the process is in and out of control. This paper introduces a functional technique for generating the parameters λ and Δ for such a chart that will have specified average run lengths. The parameters are estimated using regression plus an artificial neural network.

  4. Using Exit Charts to Develop an Early Stopping Criterion for Turbo Decoding

    OpenAIRE

    Potman, J.; Hoeksema, F.W.; Slump, Cornelis H.

    2004-01-01

    Early stopping criteria are used to determine when additional decoder iterations result in little or no improvement in the bit- error-rate (BER) at the output of a Turbo decoder. This paper proposes a stopping criterion based on Extrinsic Information Transfer (EXIT) charts. The generation and properties of EXIT charts are discussed. Convergence and BER predictions obtained using EXIT charts are compared to results obtained using Turbo decoder simulation. Finally this paper describes the use o...

  5. Retrospective Hotelling’s T2 Control Chart for Automotive Stamped Parts: A Case Study

    OpenAIRE

    Muzalwana Abdul Talib; Susila Munisamy; Shamsuddin Ahmed

    2014-01-01

    Traditional univariate control charts designed to monitor single variable quality characteristic have been successfully used in manufacturing processes. However, in manufacturing environment, variable settings are essentially multivariate that univariate control charts are not suitable for monitoring purposes. The Hotelling’s T2 multivariate control chart is a powerful statistical tool for modeling multivariate production systems and can shed light on how variables are interrelated to facilit...

  6. A new Gujarati language logMAR visual acuity chart: Development and validation

    OpenAIRE

    Ananth Sailoganathan; John Siderov; Ebi Osuobeni

    2013-01-01

    Aims: Gujarati is the main spoken language of a large proportion of the population of India. The aim of this study was to develop and validate a new Minimum Angle of Resolution (logMAR) visual acuity chart in the Gujarati language. Materials and Methods: A new Gujarati visual acuity chart was designed to logMAR specifications using Gujarati optotypes experimentally selected to have similar relative letter legibility under spherical and cylindrical defocus. The chart validation study was carri...

  7. Improving Students' Achievement in Reading Comprehension by Using Know-want-learn (Kwl) Chart Technique

    OpenAIRE

    Nasution, Novita Husna

    2012-01-01

    This study focuses on the process of improving students' achievement in reading comprehension by using KWL Chart Technique. The objective was to discover the significant improvement of students' achievement in reading comprehension when the students were taught by using KWL Chart Technique. The subjects of the study were the second grade students of SMP Negeri 29 Medan. There were thirty four students. They were taught by using KWL Chart Technique. The instruments for the data collection were...

  8. Designing business charts with Excel based on the standards of HICHERT SUCCESS

    CERN Document Server

    Gerths, Holger

    2014-01-01

    This e-book offers a comprehensive range of knowledge for creating professional business charts based on the concept of HICHERT®SUCCESS. Given this knowledge, the SUCCESS rules of designing good business charts can be followed easily. This training is based on one complex example. The tips and trick learned can be transferred to other Excel chart types easily. Contents: Introduction to the HICHERT®SUCCESS design rules.Tips and tricks for Excel 2003 and 2007/2010.Comprehensive trai

  9. Detecting SYN flood attacks via statistical monitoring charts: A comparative study

    KAUST Repository

    Bouyeddou, Benamar

    2017-12-14

    Accurate detection of cyber-attacks plays a central role in safeguarding computer networks and information systems. This paper addresses the problem of detecting SYN flood attacks, which are the most popular Denial of Service (DoS) attacks. Here, we compare the detection capacity of three commonly monitoring charts namely, a Shewhart chart, a Cumulative Sum (CUSUM) control chart and exponentially weighted moving average (EWMA) chart, in detecting SYN flood attacks. The comparison study is conducted using the publicly available benchmark datasets: the 1999 DARPA Intrusion Detection Evaluation Datasets.

  10. Development and clinical application of a color pediatric visual acuity chart

    OpenAIRE

    Shu-Guo Yin; Hong-Wei Yang; Long-Quan Xue; Yu Di; Lu Liu; undefined

    2014-01-01

    AIM: To introduce a new color pediatric visual acuity chart and its clinical application.METHODS:The color pediatric visual acuity chart was designed based on principle of visual angle. The optotype on the color chart had graphics. The progression rate of optotype size between 2 lines was 10(10)1/2 and 1.2589. A regular geometric progression of optotype sizes and distribution was employed to arrange 8 lines with 11 optotype on the color chart. The testing distance was 3m. The visual acuity sc...

  11. Application of CUSUM charts to detect lameness in a milking robot

    DEFF Research Database (Denmark)

    Pastell, Matti; Madsen, Henrik

    2008-01-01

    shown that the weight distribution between limbs changes when cow get lame. In this paper we suggest CUSUM charts to automatically detect lameness based on the measurements. CUSUM charts are statistical based control charts and are well suited for checking a measuring system in operation for any...... departure from some target or specified values. The target values for detecting lameness were calculated from the cow’s own historical data so that each animal had an individual chart. The method enables objective monitoring of the changes in leg health, which is valuable information in veterinary research...

  12. Application of statistical process control charts to monitor changes in animal production systems.

    Science.gov (United States)

    De Vries, A; Reneau, J K

    2010-04-01

    Statistical process control (SPC) is a method of monitoring, controlling, and improving a process through statistical analysis. An important SPC tool is the control chart, which can be used to detect changes in production processes, including animal production systems, with a statistical level of confidence. This paper introduces the philosophy and types of control charts, design and performance issues, and provides a review of control chart applications in animal production systems found in the literature from 1977 to 2009. Primarily Shewhart and cumulative sum control charts have been described in animal production systems, with examples found in poultry, swine, dairy, and beef production systems. Examples include monitoring of growth, disease incidence, water intake, milk production, and reproductive performance. Most applications describe charting outcome variables, but more examples of control charts applied to input variables are needed, such as compliance to protocols, feeding practice, diet composition, and environmental factors. Common challenges for applications in animal production systems are the identification of the best statistical model for the common cause variability, grouping of data, selection of type of control chart, the cost of false alarms and lack of signals, and difficulty identifying the special causes when a change is signaled. Nevertheless, carefully constructed control charts are powerful methods to monitor animal production systems. Control charts might also supplement randomized controlled trials.

  13. Run charts revisited: a simulation study of run chart rules for detection of non-random variation in health care processes.

    Science.gov (United States)

    Anhøj, Jacob; Olesen, Anne Vingaard

    2014-01-01

    A run chart is a line graph of a measure plotted over time with the median as a horizontal line. The main purpose of the run chart is to identify process improvement or degradation, which may be detected by statistical tests for non-random patterns in the data sequence. We studied the sensitivity to shifts and linear drifts in simulated processes using the shift, crossings and trend rules for detecting non-random variation in run charts. The shift and crossings rules are effective in detecting shifts and drifts in process centre over time while keeping the false signal rate constant around 5% and independent of the number of data points in the chart. The trend rule is virtually useless for detection of linear drift over time, the purpose it was intended for.

  14. Enhancing data visualisation to capture the simulator sickness phenomenon: On the usefulness of radar charts

    Directory of Open Access Journals (Sweden)

    Romain Chaumillon

    2017-08-01

    Full Text Available The data presented in this article are related to the research article entitled “The use of transdermal scopolamine to solve methodological issues raised by gender differences in susceptibility to simulator sickness” (Chaumillon et al., 2017 [1]. In an outstanding first demonstration, Kennedy et al. [2] showed that the Simulator Sickness Questionnaire (SSQ is an appropriate tool to suit the purposes of characterizing motion sickness experienced in virtual environments. This questionnaire has since been used in many scientific studies. Recently, Balk et al. [3] suggested that the proposed segregation of SSQ scores into three subclasses of symptoms might limit the accuracy of simulator sickness assessment. These authors performed a factor analysis based on SSQ scores obtained from nine studies on driving simulators. Although their factor analysis resulted in the same three orthogonal classes of symptoms as Kennedy et al. [2], unlike this pioneering study, no items were attributed to more than one factor and five items were not attributed to any class of symptoms. As a result, they claimed that an exploration of each item score should give additional cues on individual profiles. To gain a better characterization of such item-by-item exploration, data utilised in this research are shown using a radar chart visualisation.

  15. Enhancing data visualisation to capture the simulator sickness phenomenon: On the usefulness of radar charts.

    Science.gov (United States)

    Chaumillon, Romain; Romeas, Thomas; Paillard, Charles; Bernardin, Delphine; Giraudet, Guillaume; Bouchard, Jean-François; Faubert, Jocelyn

    2017-08-01

    The data presented in this article are related to the research article entitled "The use of transdermal scopolamine to solve methodological issues raised by gender differences in susceptibility to simulator sickness" (Chaumillon et al., 2017) [1]. In an outstanding first demonstration, Kennedy et al. [2] showed that the Simulator Sickness Questionnaire (SSQ) is an appropriate tool to suit the purposes of characterizing motion sickness experienced in virtual environments. This questionnaire has since been used in many scientific studies. Recently, Balk et al. [3] suggested that the proposed segregation of SSQ scores into three subclasses of symptoms might limit the accuracy of simulator sickness assessment. These authors performed a factor analysis based on SSQ scores obtained from nine studies on driving simulators. Although their factor analysis resulted in the same three orthogonal classes of symptoms as Kennedy et al. [2], unlike this pioneering study, no items were attributed to more than one factor and five items were not attributed to any class of symptoms. As a result, they claimed that an exploration of each item score should give additional cues on individual profiles. To gain a better characterization of such item-by-item exploration, data utilised in this research are shown using a radar chart visualisation.

  16. CLOCK CHART(®): a novel multi-stimulus self-check visual field screener.

    Science.gov (United States)

    Matsumoto, Chota; Eura, Mariko; Okuyama, Sachiko; Takada, Sonoko; Arimura-Koike, Eiko; Hashimoto, Shigeki; Tanabe, Fumi; Shimomura, Yoshikazu

    2015-05-01

    CLOCK CHART(®) is a multi-stimulus-type self-check visual field screening sheet developed by our group. The test chart is rotated during the examination, and the visual field abnormalities are pointed out by the patients themselves. In this study, we evaluated the clinical usefulness of this chart in patients with glaucoma. We studied 114 eyes of 114 glaucoma patients (average age 60.0 ± 11.1 years) and 45 eyes of 45 normal individuals (average age 45.0 ± 16.4 years) using CLOCK CHART(®). The static visual fields were obtained using the Octopus 101 G2 program and classified using the Aulhorn classification as modified by Greve (stages 0-I to IV) and by mean defect (MD; early 12 dB).The sensitivity and specificity of CLOCK CHART(®) for detecting visual field abnormalities were evaluated within the entire 25° field and at the 5°, 10°, 15°, 20°, and 25° eccentricity zones. The visual field agreement between the results of CLOCK CHART(®) and the static visual fields were also evaluated. In glaucomatous eyes, the sensitivity of CLOCK CHART(®) was 85, 93, and 100 % for Greve stages I, II and III-VI, respectively, and 87, 93, and 97 % for the MD value in early, moderate, and severe eyes, respectively. The agreement of the visual field defect area in CLOCK CHART(®) with the static fields was 85 and 100 % with Greve stages 0-I to I and II-VI, respectively, and 91, 96, and 96 % in early, moderate and severe glaucomatous eyes according to MD, respectively. The specificity of CLOCK CHART(®) was 89 %. CLOCK CHART(®) is a simple and reliable self-check screening chart for detecting visual field abnormalities in patients with glaucoma.

  17. Contamination of medical charts: an important source of potential infection in hospitals.

    Directory of Open Access Journals (Sweden)

    Kuo-Hu Chen

    Full Text Available OBJECTIVE: This prospective study aims to identify and compare the incidence of bacterial contamination of hospital charts and the distribution of species responsible for chart contamination in different units of a tertiary hospital. METHODS: All beds in medical, surgical, pediatric, and obstetric-gynecologic general wards (556 and those in corresponding special units (125 including medical, surgical, pediatric intensive care units (ICUs, the obstetric tocolytic unit and delivery room were surveyed for possible chart contamination. The outer surfaces of included charts were sampled by one experienced investigator with sterile cotton swabs rinsed with normal saline. RESULTS: For general wards and special units, the overall sampling rates were 81.8% (455/556 and 85.6% (107/125 (p = 0.316; the incidence of chart contamination was 63.5% and 83.2%, respectively (p0.05. Special units had a significantly higher incidence of bacterial contamination due to Staphylococcus aureus (17.8%, Methicillin-resistant Staphylococcus aureus (9.3%, Streptococcus viridans (9.4%, Escherichia coli (11.2%, Klebsiella pneumoniae (7.5%, and Acinetobacter baumannii (7.5%. Logistic regression analysis revealed the incidence of chart contamination was 2- to 4-fold higher in special units than in general wards [odds ratios: 1.97-4.00]. CONCLUSIONS: Noting that most hospital charts are contaminated, our study confirms that a hospital chart is not only a medical record but also an important source of potential infection. The plastic cover of the medical chart can harbor potential pathogens, thus acting as a vector of bacteria. Additionally, chart contamination is more common in ICUs. These findings highlight the importance of effective hand-washing before and after handling medical charts. However, managers and clinical staff should pay more attention to the issue and may consider some interventions.

  18. A new Gujarati language logMAR visual acuity chart: development and validation.

    Science.gov (United States)

    Sailoganathan, Ananth; Siderov, John; Osuobeni, Ebi

    2013-10-01

    Gujarati is the main spoken language of a large proportion of the population of India. The aim of this study was to develop and validate a new Minimum Angle of Resolution (logMAR) visual acuity chart in the Gujarati language. A new Gujarati visual acuity chart was designed to logMAR specifications using Gujarati optotypes experimentally selected to have similar relative letter legibility under spherical and cylindrical defocus. The chart validation study was carried out using 153 adult subjects in a large clinical setting in India. Subjects who were literate in English and Gujarati participated in the study. Visual acuity was measured with the new Gujarati logMAR chart and a modified Early Treatment of Diabetic Retinopathy Study-(m-ETDRS) logMAR chart. The method of presentation was randomized between the charts. Repeat visual acuity was measured on a subsequent day with a second version of the Gujarati logMAR chart. The Gujarati chart correlated highly with the m-ETDRS logMAR chart (r² = 0.974). The mean visual acuity difference (Gujarati - m-ETDRS logMAR) was equal to three letters (-0.06 logMAR). The Gujarati logMAR chart also proved to be highly repeatable (r² = 0.994, test-retest) with 95% CI of ± 0.04 logMAR. The new Gujarati logMAR visual acuity chart provides a valid and repeatable tool for the measurement of visual acuity in native Gujarati language speakers.

  19. A new Gujarati language logMAR visual acuity chart: Development and validation

    Directory of Open Access Journals (Sweden)

    Ananth Sailoganathan

    2013-01-01

    Full Text Available Aims: Gujarati is the main spoken language of a large proportion of the population of India. The aim of this study was to develop and validate a new Minimum Angle of Resolution (logMAR visual acuity chart in the Gujarati language. Materials and Methods: A new Gujarati visual acuity chart was designed to logMAR specifications using Gujarati optotypes experimentally selected to have similar relative letter legibility under spherical and cylindrical defocus. The chart validation study was carried out using 153 adult subjects in a large clinical setting in India. Subjects who were literate in English and Gujarati participated in the study. Visual acuity was measured with the new Gujarati logMAR chart and a modified Early Treatment of Diabetic Retinopathy Study-(m-ETDRS logMAR chart. The method of presentation was randomized between the charts. Repeat visual acuity was measured on a subsequent day with a second version of the Gujarati logMAR chart. Results: The Gujarati chart correlated highly with the m-ETDRS logMAR chart (r2 = 0.974. The mean visual acuity difference (Gujarati - m-ETDRS logMAR was equal to three letters (-0.06 logMAR. The Gujarati logMAR chart also proved to be highly repeatable (r2 = 0.994, test-retest with 95% CI of ± 0.04 logMAR. Conclusions: The new Gujarati logMAR visual acuity chart provides a valid and repeatable tool for the measurement of visual acuity in native Gujarati language speakers.

  20. Comparing distance visual acuity measurement with a novel eye chart and the Landolt C chart in a population of children aged 6-18 years.

    Science.gov (United States)

    Gorham, John P; Bruce, Beau B; Hutchinson, Amy K

    2017-12-01

    The Handy Eye Chart™ is designed to assist in evaluating the visual acuity of patients with non-standard communication styles. The Handy Eye Chart™ has been previously validated against the early treatment diabetic retinopathy study (ETDRS) chart. The aim of this research is to compare visual acuity outcomes with The Handy Eye Chart™ against the international gold standard, the Landolt C chart, in a population of children. Sixty participants between the ages of 6 and 18 were recruited at the Pediatric Section of the Department of Ophthalmology at the Emory Eye Center. Visual acuity was evaluated using The Handy Eye Chart™ and the Landolt C Chart, altering the order of administration between charts. The visual acuity data were compared using t test, linear regression, and Bland-Altman analysis. The mean difference in visual acuity was 0.02 logMAR (CI 0.009-0.04, p = 0.002). The correlation coefficient was 0.98. The Bland-Altman analysis shows the 95% limits of agreement between the charts to be -0.14 to 0.09 logMAR. The Handy Eye Chart™ is a valid measure of visual acuity when compared with the international gold standard, the Landolt C Chart.

  1. Change point detection in risk adjusted control charts.

    Science.gov (United States)

    Assareh, Hassan; Smith, Ian; Mengersen, Kerrie

    2015-12-01

    Precise identification of the time when a change in a clinical process has occurred enables experts to identify a potential special cause more effectively. In this article, we develop change point estimation methods for a clinical dichotomous process in the presence of case mix. We apply Bayesian hierarchical models to formulate the change point where there exists a step change in the odds ratio and logit of risk of a Bernoulli process. Markov Chain Monte Carlo is used to obtain posterior distributions of the change point parameters including location and magnitude of changes and also corresponding probabilistic intervals and inferences. The performance of the Bayesian estimator is investigated through simulations and the result shows that precise estimates can be obtained when they are used in conjunction with the risk-adjusted CUSUM and EWMA control charts. In comparison with alternative EWMA and CUSUM estimators, more accurate and precise estimates are obtained by the Bayesian estimator. These superiorities enhance when probability quantification, flexibility and generaliability of the Bayesian change point detection model are also considered. The Deviance Information Criterion, as a model selection criterion in the Bayesian context, is applied to find the best change point model for a given dataset where there is no prior knowledge about the change type in the process. © The Author(s) 2011.

  2. Charting the Research Course for Sustainable Aquaculture in Sabah, Malaysia

    Directory of Open Access Journals (Sweden)

    Vun L. W.

    2016-01-01

    Full Text Available Due to arising needs and demands, aquaculture is currently the fastest growing food production sector. In order to increase yield and yet to remain sustainable, the challenges would be to minimise impact on the environment and ecosystem services. Aquaculture activity contributes significantly to Malaysia and also the state of Sabah’s economy and food security. Hence, the future changes in the environment as a result of rapid population growth and development would pose as threats to this industry in terms of quality, quantity and sustainability. Unforeseen environmental changes such as environmental pollution from other sources, climate change and the changes in policies would jeopardize the sustainability of this industry. In order to anticipate such impacts to the aquaculture activities, this paper set to chart a sustainable course for its development. Four important research courses were proposed: establishment of a sustainable framework, assessment of impacts of climate change, viability and vulnerability assessment due to future environmental changes and food security. Such findings would eventually allow the stakeholders to plan and manage the resources and aquaculture activities in such a way that foster sustainable food security and resilient aquatic ecosystems.

  3. Process Monitoring with Multivariate p-Control Chart

    Directory of Open Access Journals (Sweden)

    Paolo C. Cozzucoli

    2009-01-01

    Full Text Available We assume that the operator is interested in monitoring a multinomial process. In this case the items are classified into (k+1 ordered distinct and mutually exclusive defect categories. The first category is used to classify the conforming defect-free items, while the remaining k categories are used to classify the nonconforming items in k defect grades, with increasing degrees of nonconformity. Usually the process is said to be capable if the overall proportion of nonconforming items is very small and remains low, or declines over time. Nevertheless, since we classify the nonconforming items into k distinct defect grades, the operator can also evaluate the overall level of defectiveness. This quality parameter depends on the k defect categories. Furthermore, we are interested in evaluating, over time, the proportion of nonconforming items in each category as well as the overall level of defectiveness. To achieve this goal, we propose (i a normalized index that can be used to evaluate the capability of the process in terms of the overall level of defectiveness, and (ii a two-sided Shewhart-type multivariate control chart to monitor the overall proportion of nonconforming items and the corresponding defectiveness level.

  4. Kornati Islands on Old Geographic Maps and Charts

    Directory of Open Access Journals (Sweden)

    Josip Faričić

    2005-09-01

    Full Text Available Based on the analysis of cartographic sources, the paper analyses the historical and geographical development of the Kornati islands, the largest group of Croatian islands. The old maps were used first of all as the means of geographic research that, being necessarily correlated to the simultaneous historical written sources and modern topographic and maritime maps, make the basis for creating a research platform for relevant scientific results to be achieved. On the basis of the old maps it is possible, among other things to anticipate that the Kornati islands used to have great geotraffic significance on the eastern Adriatic sailing route. According to the development of geographic concepts and cartographic methods, the geographic vision of the Kornati islands has been gradually clarified ever since the 16th century. The chart from the Carta di cabotaggio del Mare Adriatico edition published by the Military and Geographic Institute from Milan (1822-1824 presents the turning point with the first complete and mostly precise presentation of the Kornati islands group on the basis of hydrographic and topographic field measurements.

  5. Off the Chart: The Crimean War in British Public Consciousness

    Directory of Open Access Journals (Sweden)

    A. L. Berridge

    2015-05-01

    Full Text Available The Crimean War revealed in this issue of '19' is of such rich and varied historical interest as to make a mystery of its relative obscurity with the general public in the UK. My own article adopts a novelist’s perspective to chart some aspects of this popular decline, exploring the treatment of the Siege of Sebastopol through the media of painting, literature, and cinema, and considering whether those aspects of the war that have made the greatest impression on the public mind are also those that make it least commercially attractive. It also examines the more official legacy, from the treatment of war dead to the changing face of sculpted memorials, and by comparing British commemoration with that of Russians in Crimea, discusses the possible role played in national memory by both shame and pride. In a final brief analysis of the 1968 film 'The Charge of the Light Brigade', I consider the extent to which modern rejection of Victorian values has created historical distortion, and whether a more truthful presentation might better serve the cause of preserving an important war in the British public consciousness.

  6. Pathways to Suicide in Australian Farmers: A Life Chart Analysis.

    Science.gov (United States)

    Kunde, Lisa; Kõlves, Kairi; Kelly, Brian; Reddy, Prasuna; De Leo, Diego

    2017-03-28

    Farmers have been found to be at increased risk of suicide in Australia. The Interpersonal-Psychological Theory of Suicidal Behaviour suggests that the proximal factors leading to the suicidal desire or ideation include an individual's experiences of both perceived burdensomeness and thwarted belongingness. Suicidal desire with acquired capability to engage in lethal self-injury is predictive of suicidal behaviour. This study investigates the pathways to suicide of 18 Australian male farmers in order to understand the suicidal process and antecedents to suicide in Australian male farmers. The psychological autopsy (PA) method was used to generate life charts. Two pathways with distinct suicidal processes were identified: acute situational (romantic relationship problems and financial concerns/pending retirement) and protracted (long-term psychiatric disorder). Long working hours, interpersonal conflicts, physical illnesses and pain, alcohol abuse, access to firearms, and exposure to drought were additional common factors identified. An understanding of the interrelatedness of diverse distal and proximal risk factors on suicidal pathways in the wider environmental context for male farmers is required when developing and implementing rural suicide prevention activities.

  7. Astronomical Books and Charts in the Book of Bibliographie Coreenne

    Directory of Open Access Journals (Sweden)

    Ki-Won Lee

    2008-06-01

    Full Text Available We investigate astronomical materials listed in the book of Bibliographie Coreenne written by Maurice Courant. He classified ancient Korean books into nine Divisions (部 and thirty six Classes (類, and published them as three volumes (ranging from 1894 to 1896 and one supplement (in 1901. In total, 3,821 books including astronomical ones are listed together with information on physical size, possessional place, bibliographical note, and so forth. Although this book is an essential one in the field of Korea bibliography and contains many astronomical materials such as Cheon-Mun-Ryu-Cho 天文類抄, Si-Heon-Seo 時憲書, and Cheon-Sang-Yeol-Cha-Bun-Ya-Ji-Do 天象列次分野之圖, it has not been well known to the public nor to astronomical society. Of 3,821 catalogues, we found that about 50 Items (種 are related to astronomy or astrology, and verified that most of them are located in the Kyujanggak Royal Library 奎章閣. We also found an unknown astronomical chart, Hon-Cheon-Chong-Seong-Yeol-Cha-Bun-Ya-Ji-Do 渾天總星列次分野之圖. Because those astronomical materials are not well known to international astronomical community and there have been few studies on the materials in Korea, we here introduce and review them, particularly with the astronomical viewpoint.

  8. Astronomical Books and Charts in the Book of Bibliographie Coreenne

    Science.gov (United States)

    Lee, Ki-Won; Yang, Hong-Jin; Park, Myeong-Gu

    2008-06-01

    We investigate astronomical materials listed in the book of Bibliographie Coréenne written by Maurice Courant. He classified ancient Korean books into nine Divisions (?) and thirty six Classes (?), and published them as three volumes (ranging from 1894 to 1896) and one supplement (in 1901). In total, 3,821 books including astronomical ones are listed together with information on physical size, possessional place, bibliographical note, and so forth. Although this book is an essential one in the field of Korea bibliography and contains many astronomical materials such as Cheon-Mun-Ryu-Cho ????, Si-Heon-Seo ??????, and Cheon-Sang-Yeol-Cha-Bun-Ya-Ji-Do ????????, it has not been well known to the public nor to astronomical society. Of 3,821 catalogues, we found that about 50 Items (?) are related to astronomy or astrology, and verified that most ! of them are located in the Kyujanggak Royal Library ???. We also found an unknown astronomical chart, Hon-Cheon-Chong-Seong-Yeol-Cha-Bun-Ya-Ji-Do ??????????. Because those astronomical materials are not well known to international astronomical community and there have been few studies on the materials in Korea, we here introduce and review them, particularly with the astronomical viewpoint.

  9. The optimal choice of negative binomial charts for monitoring high-quality processes

    NARCIS (Netherlands)

    Albers, Willem/Wim

    2010-01-01

    Good control charts for high quality processes are often based on the number of successes between failures. Geometric charts are simplest in this respect, but slow in recognizing moderately increased failure rates p. Improvement can be achieved by waiting until r > 1 failures have occurred, i.e. by

  10. Increasing Communication in Geometry by Using a Personal Math Concept Chart

    Science.gov (United States)

    Friedman, Rhonda; Kazerouni, Gety; Lax, Stacey; Weisdorf, Elli

    2011-01-01

    The action research team developed a "Personal Math Concept Chart". This chart required students to describe the mathematical concepts that they were studying in the Geometry strand of Mathematics using their own images and words. In this study, students were encouraged to express their own understanding of geometric concepts in order to…

  11. 75 FR 11938 - Chart Energy and Chemicals, Inc., La Crosse, WI; Notice of Termination of Investigation

    Science.gov (United States)

    2010-03-12

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF LABOR Employment and Training Administration Chart Energy and Chemicals, Inc., La Crosse, WI; Notice of Termination... of Machinists and Aerospace Workers, Lodge 2191, on behalf of workers of Chart Energy and Chemical...

  12. The handy eye chart: a new visual acuity test for use in children.

    Science.gov (United States)

    Cromelin, Caroline H; Candy, T Rowan; Lynn, Michael J; Harrington, Cindy Lou; Hutchinson, Amy K

    2012-10-01

    To design a simple matching acuity test based on hand gestures that is minimally dependent on familiarity with symbols and letters. The visual acuity results obtained from children using the Handy Eye Chart were compared with results obtained with the Early Treatment Diabetic Retinopathy Study (ETDRS) chart. Evaluation of diagnostic test or technology. Sixty children aged 6 to 16 years were recruited consecutively from the Pediatric Ophthalmology section of the Emory Eye Center. Monocular visual acuity was tested using both the new eye chart and the ETDRS chart, alternating the order of administration between subjects. Testing was performed on the subject's eye with the poorest acuity. Outcome measures were monocular logarithm of the minimum angle of resolution (logMAR) visual acuity scores for each chart. The acuities were shown to have a strong linear correlation (r = 0.95) and a mean difference in acuity of -0.03 (95% confidence interval, -0.05 to -0.01) logMAR, equivalent to approximately 1.5 letters, with the new eye chart underestimating the vision as determined by the ETDRS chart. The 95% limits of agreement were ±1.6 lines. This study supports the validity of the new eye chart as a measure of visual acuity in pediatric patients aged 6 to 18 years with vision ranging from 20/16 to 20/200. Copyright © 2012 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.

  13. 7 CFR Appendix 1 to Part 799 - Organization Chart FSA-USDA

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Organization Chart FSA-USDA 1 Appendix 1 to Part 799 Agriculture Regulations of the Department of Agriculture (Continued) FARM SERVICE AGENCY, DEPARTMENT OF... THE NATIONAL ENVIRONMENTAL POLICY ACT Pt. 799, App. 1 Appendix 1 to Part 799—Organization Chart FSA...

  14. Control charts as an early-warning system for workplace health outcomes.

    Science.gov (United States)

    Larsson, J; Landstad, B J; Wiklund, H; Vinberg, S

    2011-01-01

    Statistical process control (SPC) charts have not been widely used to monitor workplace health and work environments. This research and effort to develop a more accurate and easy to use management control system for employee health is important from a humanistic, societal and economic standpoint, as well as complying with laws that regulate work environments. The purpose of the study is to design and discuss control charts as an early warning system for workplace health outcomes to promote workplace health management. Another purpose is to discuss relevant factors in the concept of the out-of-control action plan (OCAP) as a response when a chart warns that the workplace process may be malfunctioning. Two Swedish organizations were selected as case study organizations: a department at a university and an elderly care operation in a municipality. This study was explorative and should be seen as a starting point in learning how to use control charts for workplace health management. Self-assessed general health and new sick-cases per employee were selected as indicators for the control charts. An integrated early warning system with Cumulative Sums- and Shewhart-charts are presented to show a possible method as to how an early warning system can be structured through the use of statistical control charts. The conclusion of this study is that control charts, along with well-designed implementation, make up a powerful and useable managerial early-warning system which promotes workplace health and helps to prevent sickness absence.

  15. How to generate and interpret fire characteristics charts for surface and crown fire behavior

    Science.gov (United States)

    Patricia L. Andrews; Faith Ann Heinsch; Luke Schelvan

    2011-01-01

    A fire characteristics chart is a graph that presents primary related fire behavior characteristics-rate of spread, flame length, fireline intensity, and heat per unit area. It helps communicate and interpret modeled or observed fire behavior. The Fire Characteristics Chart computer program plots either observed fire behavior or values that have been calculated by...

  16. Control charts for health care monitoring under intermittent out-of-control behavior

    NARCIS (Netherlands)

    Albers, Willem/Wim

    Health care monitoring typically concerns attribute data with very low failure rates. Efficient control charts then signal if the waiting time till r (e.g. r≤5) failures is too small. An interesting alternative is the MAX-chart, which signals if all the associated r waiting times for a single

  17. Operational requirements for electronic chart display and information systems (ECDIS. Risk of overreliance on ECDIS

    Directory of Open Access Journals (Sweden)

    Adam WEINTRIT

    2008-01-01

    Full Text Available Navigating with Electronic Chart Display and Information Systems(ECDIS is fundamentally different from navigating with paper charts. The paper is addressed to model course on training in the operational use of ECDIS. It presents problems related to the risk of over reliance on ECDIS.

  18. Fire characteristics charts for fire behavior and U.S. fire danger rating

    Science.gov (United States)

    Faith Ann Heinsch; Pat Andrews

    2010-01-01

    The fire characteristics chart is a graphical method of presenting U.S. National Fire Danger Rating indices or primary surface or crown fire behavior characteristics. A desktop computer application has been developed to produce fire characteristics charts in a format suitable for inclusion in reports and presentations. Many options include change of scales, colors,...

  19. Nurses' monitoring of the Road to Health Chart at primary healthcare ...

    African Journals Online (AJOL)

    Background: The Road to Health Chart (RTHC) is a record chart carried by the caregiver that combines essential information on the growth monitoring of a child, immunisation, vitamin A supplementation, deworming medicine and other illnesses. It provides useful information to the parent and healthcare professional.

  20. An EWMA-type control chart for monitoring the process mean using auxiliary information

    NARCIS (Netherlands)

    Abbas, N.; Riaz, M.; Does, R.J.M.M.

    2014-01-01

    Statistical process control (SPC) is an important application of statistics in which the outputs of production processes are monitored. Control charts are an important tool of SPC. A very popular category is the Shewhart's x-chart used to monitor the mean of a process characteristic. Two

  1. Invasive blood pressure recording comparing nursing charts with an electronic monitor: a technical report.

    Science.gov (United States)

    Wong, Benjamin T; Glassford, Neil J; Bion, Victoria; Chai, Syn Y; Bellomo, Rinaldo

    2014-03-01

    Blood pressure management (assessed using nursing charts) in the early phase of septic shock may have an effect on renal outcomes. Assessment of mean arterial pressure (MAP) values as recorded on nursing charts may be inaccurate. To determine the difference between hourly blood pressure values as recorded on the nursing charts and hourly average blood pressure values over the corresponding period obtained electronically from the bedside monitor. We studied 20 patients with shock requiring vasopressor support and invasive blood pressure monitoring. Hourly blood pressure measurements were recorded on the nursing charts over a 12-hour period. Blood pressure values recorded every 10 minutes were downloaded from electronic patient monitors over the corresponding period. The hourly average of the 10-minute blood pressure values was compared with the measurements recorded on the nursing charts. We assessed 240 chart readings and 1440 electronic recordings. Average chart MAP was 72.54 mmHg and average electronic monitor MAP was 71.54 mmHg. MAP data from the two sources showed a strong correlation (ρ0.71, P blood pressure as recorded on nursing charts reasonably approximates mean blood pressure recorded on the monitor.

  2. No Humble Pie: The Origins and Usage of a Statistical Chart

    Science.gov (United States)

    Spence, Ian

    2005-01-01

    William Playfair's pie chart is more than 200 years old and yet its intellectual origins remain obscure. The inspiration likely derived from the logic diagrams of Llull, Bruno, Leibniz, and Euler, which were familiar to William because of the instruction of his mathematician brother John. The pie chart is broadly popular but--despite its common…

  3. 23 CFR Appendix D to Subpart D of... - Equal Opportunity Compliance Review Process Flow Chart

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Equal Opportunity Compliance Review Process Flow Chart D..., Subpt. D, App. D Appendix D to Subpart D of Part 230—Equal Opportunity Compliance Review Process Flow Chart EC14OC91.004 ...

  4. Mixed exponentially weighted moving average-cumulative sum charts for process monitoring

    NARCIS (Netherlands)

    Abbas, N.; Riaz, M.; Does, R.J.M.M.

    2013-01-01

    The control chart is a very popular tool of statistical process control. It is used to determine the existence of special cause variation to remove it so that the process may be brought in statistical control. Shewhart-type control charts are sensitive for large disturbances in the process, whereas

  5. A New Spin on Miscue Analysis: Using Spider Charts to Web Reading Processes

    Science.gov (United States)

    Wohlwend, Karen E.

    2012-01-01

    This article introduces a way of seeing miscue analysis data through a "spider chart", a readily available digital graphing tool that provides an effective way to visually represent readers' complex coordination of interrelated cueing systems. A spider chart is a standard feature in recent spreadsheet software that puts a new spin on miscue…

  6. Developing Interactive Website Charts for Extension Clientele by Using Google Docs

    Science.gov (United States)

    Carls, Emily; Griffin, Terry

    2016-01-01

    Interactive website charts can be used to engage stakeholders and help them understand and apply relevant data. We explain methods we used to create and implement interactive charts for online outreach so that other Extension personnel can use similar interactive tools with their clientele. We describe step by step and in detail how we made…

  7. Assessment of dizziness among older patients at a family practice clinic: a chart audit study

    Directory of Open Access Journals (Sweden)

    Pimlott Nicholas JG

    2005-01-01

    Full Text Available Abstract Background Dizziness is a common complaint among the elderly with a prevalence of over 30% in people over the age of 65. Although it is a common problem the assessment and management of dizziness in the elderly is challenging for family physicians. There is little published research which assesses the quality of dizziness assessment and management by family physicians. Methods We conducted a retrospective, chart audit study of patients with dizziness attending the Sunnybrook Family Practice Center of Sunnybrook and Women's College Health Sciences Center (SWCHSC in Toronto. We audited a random sample of 50 charts of patients from 310 eligible charts. Quality indicators across all dizziness subtypes were assessed. These quality indicators included: onset and course of symptoms; symptoms in patients' own words; number of medications used; postural blood pressure changes; symptoms of depression or anxiety; falls; syncope; diagnosis; outcome; specialty referrals. Quality indicators specific to each dizziness subtype were also audited. Results 310 charts satisfied inclusion criteria with 20 charts excluded and 50 charts were randomly generated. Documentation of key quality indicators in the management of dizziness was sub-optimal. Charts documenting patients' dizziness symptoms in their own words were more likely to have a clinical diagnosis compared to charts without (P = 0.002. Conclusions Documentation of selected key quality indicators could be improved, especially that of patients' symptoms in their own words.

  8. A new VLAD-based control chart for detecting surgical outcomes.

    Science.gov (United States)

    Yue, Jin; Lai, Xin; Liu, Liu; Lai, Paul B S

    2017-12-10

    The timely detection of surgical quality changes is becoming increasingly important. Variable life-adjusted display (VLAD) has a wide range of applications in the medical field. However, the control limits of VLAD are not defined; thus, the charts alone cannot reveal whether surgical quality underwent a significant change. This paper proposes a new risk-adjusted exponentially weighted moving average VLAD (RAEV) chart and provides a control limit that can be used with the VLAD. The RAEV chart is designed to detect shifts in the odds ratios of patients' surgical risk. Simulation is used to demonstrate that the proposed RAEV chart efficiently detects shifts of various magnitudes, and an example is provided to illustrate the implementation of the RAEV control limits in a VLAD chart. Copyright © 2017 John Wiley & Sons, Ltd. Copyright © 2017 John Wiley & Sons, Ltd.

  9. A performance comparison among the Hotelling T2 and the rank classification control charts

    Directory of Open Access Journals (Sweden)

    F. Zertuche–Luis

    2008-07-01

    Full Text Available In the industrial sector it is fundamental to have statistical methods that allow efficient monitoring of production processes, particularly when the characteristics of quality are multivariate. The production processes are generally monitored by means of control charts, which give graphic information that tells if the process is, or not, under control. In this context, this article, compares, through simulation, the performance of two types of multivariate control charts: the classic chart based on Hotelling T2 statistics, and a non–parametric chart based on the concept of data depth. We decided to perform the simulation when, studying a process within the automotive industry using both approaches, the conclusions arrived at were different. Recommendations are given about the use of one or the other control chart in accordance with the statistical behavior of the monitored process.

  10. Application of a binomial cusum control chart to monitor one drinking water indicator

    Directory of Open Access Journals (Sweden)

    Elisa Henning

    2014-02-01

    Full Text Available The aim of this study is to analyze the use of a binomial cumulative sum chart (CUSUM to monitor the presence of total coliforms, biological indicators of quality of water supplies in water treatment processes. The sample series were monthly taken from a water treatment plant and were analyzed from 2007 to 2009. The statistical treatment of the data was performed using GNU R, and routines were created for the approximation of the upper limit of the binomial CUSUM chart. Furthermore, a comparative study was conducted to investigate whether there is a significant difference in sensitivity between the use of CUSUM and the traditional Shewhart chart, the most commonly used chart in process monitoring. The results obtained demonstrate that this study was essential for making the right choice in selecting a chart for the statistical analysis of this process.

  11. Robust Hotelling T2 control chart using reweighted minimum vector variance estimators

    Science.gov (United States)

    Ali, Hazlina; Yahaya, Sharipah Soaad Syed; Omar, Zurni

    2014-12-01

    Hotelling T2 control chart is employed to monitor the stability of a multivariate process in Phase I and II. Traditional Hotelling T2 control chart using classical estimators in Phase I, however, suffers from masking and swamping effects and thus jeorpadizes its performance. To alleviate this problem, robust location and scale estimators are recommended instead. In this paper, a new Hotelling T2 control chart based on highly robust and efficient estimators of location and scatter estimators, known as reweighted minimum vector variance estimators, is proposed. Numerical results show that the new chart is not only capable of detecting outliers but it can also control the alarm rates better than the existing charts.

  12. Proposal for internet-based Digital Dental Chart for personal dental identification in forensics.

    Science.gov (United States)

    Hanaoka, Yoichi; Ueno, Asao; Tsuzuki, Tamiyuki; Kajiwara, Masahiro; Minaguchi, Kiyoshi; Sato, Yoshinobu

    2007-05-03

    A dental chart is very useful as a standard source of evidence in the personal identification of bodies. However, the kind of dental chart available will often vary as a number of types of odontogram have been developed where the visual representation of dental conditions has relied on hand-drawn representation. We propose the Digital Dental Chart (DDC) as a new style of dental chart, especially for open investigations aimed at establishing the identity of unknown bodies. Each DDC is constructed using actual oral digital images and dental data, and is easy to upload onto an Internet website. The DDC is a more useful forensic resource than the standard types of dental chart in current use as it has several advantages, among which are its ability to carry a large volume of information and reproduce dental conditions clearly and in detail on a cost-effective basis.

  13. THE IMPACT OF THE BUSINESS ENVIRONMENT ON THE SHAPING OF AN ORGANIZATION CHART

    Directory of Open Access Journals (Sweden)

    Simona BUTA

    2014-06-01

    Full Text Available Since Adam Smith , FW Taylor, H. Fayol and recently , whether we are referring to Peter Drucker, Harrington & Harrington, and other authors consecrated in the literature of management / economics, the organization issues in an organization have grown much in complexity. The manner in which the firm / company constitutes the organization chart induces subsequently, explicitly or not, multiple conditionings in the daily practice of the organization (both in the sense that it may favour certain efforts / strategies or on the contrary it may block such efforts. The size of the company, the market and the technology are the most popular factors that will influence an organization chart.. However, in the context of global crisis and chaotic business environment, new questions arise regarding the model of organization charts and associated management strategies. What are the predictable directions regarding the type of organization chart in the current business environment? How does social competition influence the shape of organization charts in different countries?

  14. Data Profiling

    OpenAIRE

    Hladíková, Radka

    2010-01-01

    Title: Data Profiling Author: Radka Hladíková Department: Department of Software Engineering Supervisor: Ing. Vladimír Kyjonka Supervisor's e-mail address: Abstract: This thesis puts mind on problems with data quality and data profiling. This Work analyses and summarizes problems of data quality, data defects, process of data quality, data quality assessment and data profiling. The main topic is data profiling as a process of researching data available in existing...

  15. Design and performance of statistical process control charts applied to estrous detection efficiency.

    Science.gov (United States)

    de Vries, A; Conlin, B J

    2003-06-01

    Statistical process control (SPC) charts to monitor production processes have not been widely used in dairy management. Shewhart and cumulative sum (cusum) control charts were designed to determine true changes in estrous detection efficiency (EDE) amidst normal variation in dairy cattle. A stochastic simulation model was used to track performance over time of individual cows in herds of 100 and 1000 cows. Estrous detection ratios (EDR), calculated as observed estruses divided by estimated estrous days (in periods of 1 to 60 d), were used to monitor EDE. Control charts for EDR, using normal and binomial distributions, were designed at 0.65 EDE for both herd sizes; then EDE was set to 0.65 (no change), 0.55, 0.45, or 0.35 and average days to the first detection signal (ATS) in 400 runs was determined. Observed ATS at 0.65 EDE could differ from the target ATS, depending on the SPC chart design and estimated proportions of estrous days for inseminated cows. Observed ATS were shorter for larger changes in EDE and for the 1000-cow herd. Observed ATS for a change to 0.55 EDE were approximately 300 d (100 cows) or 60 d (1000 cows) with the cusum charts. For a change to 0.35 EDE, observed ATS were approximately 50 d (100 cows) and approximately 11 d (1000 cows). Shewhart charts performed similarly or took longer to signal changes depending on period length. Observed ATS on cusum charts were much longer than minimum when non-optimal reference values were used in the design. Observed ATS were also longer when SPC charts were designed with a longer target ATS and change in EDE was small. Control charts using normal and binomial distributions generally performed similarly. Statistical process control charts detected changes in estrous detection efficiency soon enough to be potentially useful in dairy management.

  16. Neutral Site Planning Project, Final Report. Volume II: Neighborhood Profiles.

    Science.gov (United States)

    Providence School Dept., RI.

    As part of a plan for the development of neutral site magnet schools in Providence, twenty-four individual neighborhoods are profiled in a series of charts and tables which provide demographic, economic, housing, and social service and crime data. The information provided includes ethnic composition, age breakdowns, educational level, income,…

  17. EPIZOOTIOLOGICAL CHART OF AVIAN CHLAMYDIOSIS IN BOSNIA AND HERZEGOVINA

    Directory of Open Access Journals (Sweden)

    Edin Šatrović

    2013-03-01

    Full Text Available In the period from 2003 to 2008 we conducted a research on avian chlamydiosis in Bosnia and Herzegovina on a great number of domestic and wild birds from different localities. Diagnostic material from the wild birds was provided by the hunting societies during the hunting season while material from the domestic poultry was taken indiscriminately. Chicken samples are taken from the facilities for intensive production, namely parent flocks. Turkey samples are taken from the individual households keeping and breeding turkey on extensive basis (half – open type of breeding. Pigeon samples are provided from the central parts of Sarajevo where the pigeons live in a close contact with people. Also, pigeon samples are provided from around the town's bakery and a farm for intensive poultry breeding because the pigeons are considered a potential source of infection for other birds, primarily domestic ones, and also for the people. We also took samples of the breeding pheasants from a pheasant farm in Orašje, which is oriented toward breeding and releasing pheasants into their natural habitat, but also breeding for the needs of hunting industry. Samples from the wild/hunting birds (ducks and wild pheasants were provided in the proximity of watercourses as their residence, and where the hunting is of a greater extent. To obtain valid diagnostic results we have used multiple diagnostic methods and tests: bacteriological examination to exclude cross reactions, IIF (indirect immunofluorescence to confirm antibodies in the blood serum, ELISA (immunoesay and EIA (quick immunoessay to detect antigen, and conventional PCR and rRT – PCR to detect antigen as sensitive and sophisticated diagnostics methods.Key words: avian chlamydiosis, epizootiological chart, Bosnia and Herzegovina

  18. Clinical experience of baclofen in alcohol dependence: A chart review

    Directory of Open Access Journals (Sweden)

    Abhijit R Rozatkar

    2016-01-01

    Full Text Available Introduction: Craving is recognized as a formidable barrier in the management of patients with alcohol dependence. Among pharmacological agents that have been used in experimental studies for reduction in craving, baclofen appears to have a significant advantage over other agents. Methodology: The study is retrospective chart review of patients (n = 113 who have been treated with baclofen for alcohol dependence in a tertiary hospital of North India. Baseline assessments included sociodemography, motivation, quantity-frequency of alcohol use, and other alcohol-related clinical parameters. Weekly assessments, for a period of 4 weeks, were extracted from records which included dose of baclofen, craving intensity, and alcohol consumption. Results: The study sample was predominantly male, mean age of 41.49 (±9.75 years, most having a family history of substance use (70.97%, and many reporting binge use pattern in last year (49.46%. Baseline assessment revealed 48.7% of the sample was in precontemplation phase for alcohol use and 70% reported severe and persistent craving. This persistent craving was reported by only 15% of the sample by the end of 4 weeks treatment with baclofen (20–40 mg/day. Thirty-four percent of patients reported continued problematic use of alcohol by the end of 4 weeks. Conclusion: Our clinical experience suggests that baclofen reduces craving and alcohol consumption including in those with poor motivation. The drug causes few side effects and does not add to the intoxication effect of alcohol. Considering that baclofen is safe in those with liver cirrhosis and reduces withdrawal symptoms due to alcohol, a controlled trial comparing it with standard treatment is required.

  19. The use of principal components and univariate charts to control multivariate processes

    Directory of Open Access Journals (Sweden)

    Marcela A. G. Machado

    2008-04-01

    Full Text Available In this article, we evaluate the performance of the T² chart based on the principal components (PC X chart and the simultaneous univariate control charts based on the original variables (SU charts or based on the principal components (SUPC charts. The main reason to consider the PC chart lies on the dimensionality reduction. However, depending on the disturbance and on the way the original variables are related, the chart is very slow in signaling, except when all variables are negatively correlated and the principal component is wisely selected. Comparing the SU , the SUPC and the T² charts we conclude that the SU X charts (SUPC charts have a better overall performance when the variables are positively (negatively correlated. We also develop the expression to obtain the power of two S² charts designed for monitoring the covariance matrix. These joint S² charts are, in the majority of the cases, more efficient than the generalized variance chart.Neste artigo, avaliamos o desempenho do gráfico de T² baseado em componentes principais (gráfico PC e dos gráficos de controle simultâneos univariados baseados nas variáveis originais (gráfico SU X ou baseados em componentes principais (gráfico SUPC. A principal razão para o uso do gráfico PC é a redução de dimensionalidade. Entretanto, dependendo da perturbação e da correlação entre as variáveis originais, o gráfico é lento em sinalizar, exceto quando todas as variáveis são negativamente correlacionadas e a componente principal é adequadamente escolhida. Comparando os gráficos SU X, SUPC e T² concluímos que o gráfico SU X (gráfico SUPC tem um melhor desempenho global quando as variáveis são positivamente (negativamente correlacionadas. Desenvolvemos também uma expressão para obter o poder de detecção de dois gráficos de S² projetados para controlar a matriz de covariâncias. Os gráficos conjuntos de S² são, na maioria dos casos, mais eficientes que o gr

  20. An ex ante control chart for project monitoring using earned duration management observations

    Science.gov (United States)

    Mortaji, Seyed Taha Hossein; Noori, Siamak; Noorossana, Rassoul; Bagherpour, Morteza

    2017-12-01

    In the past few years, there has been an increasing interest in developing project control systems. The primary purpose of such systems is to indicate whether the actual performance is consistent with the baseline and to produce a signal in the case of non-compliance. Recently, researchers have shown an increased interest in monitoring project's performance indicators, by plotting them on the Shewhart-type control charts over time. However, these control charts are fundamentally designed for processes and ignore project-specific dynamics, which can lead to weak results and misleading interpretations. By paying close attention to the project baseline schedule and using statistical foundations, this paper proposes a new ex ante control chart which discriminates between acceptable (as-planned) and non-acceptable (not-as-planned) variations of the project's schedule performance. Such control chart enables project managers to set more realistic thresholds leading to a better decision making for taking corrective and/or preventive actions. For the sake of clarity, an illustrative example has been presented to show how the ex ante control chart is constructed in practice. Furthermore, an experimental investigation has been set up to analyze the performance of the proposed control chart. As expected, the results confirm that, when a project starts to deflect significantly from the project's baseline schedule, the ex ante control chart shows a respectable ability to detect and report right signals while avoiding false alarms.

  1. News from the Library: The 8th edition Karlsruhe nuclide chart has been released

    CERN Multimedia

    CERN Library

    2012-01-01

    The 8th edition of the Karlsruhe Nuclide Chart contains new data not found in the 7th edition.   Since 1958, the well-known Karlsruhe Nuclide Chart has provided scientists with structured, valuable information on the half-lives, decay modes and energies of radioactive nuclides. The chart is used in many disciplines in physics (health physics, radiation protection, nuclear and radiochemistry, astrophysics, etc.) but also in the life and earth sciences (biology, medicine, agriculture, geology, etc.). The 8th edition of the Karlsruhe Nuclide Chart contains new data on 737 nuclides not found in the 7th edition. In total, nuclear data on 3847 experimentally observed ground states and isomers are presented. A new web-based version of this chart is in the final stages of development for use within the Nucleonica Nuclear Science Portal - a portal for which CERN has an institutional license. The chart is also available in paper format.   If you want to buy a paper version of the chart, ple...

  2. Validation of US cerebral palsy growth charts using a UK cohort.

    Science.gov (United States)

    Wright, Charlotte M; Reynolds, Lucy; Ingram, Emily; Cole, Tim J; Brooks, Jordan

    2017-09-01

    Growth charts for cerebral palsy (CP) have been constructed using data for 24 920 Californian patients, covering ages 2 to 20 years, with separate charts for the five severity levels of the Gross Motor Function Classification System (GMFCS). Our aim was to test how the data for British children with CP fit these charts, compared with conventional local charts. US CP growth reference was reanalysed using the lambda-mu-sigma (LMS) method to allow calculation of standard deviation z-scores. Growth data for 195 children with CP in Glasgow, UK, were retrieved and converted to z-scores using the CP reference as well as the combined World Health Organization and UK 1990 growth reference (UK-WHO). Compared to the UK-WHO reference, measurements diverged progressively with increasing severity, with mean height for GMFCS level V being close to the second UK-WHO centile. Compared with the CP reference, mean height and weight z-scores were between the 50th and 75th centiles for all severity levels, while body mass index was just below the 50th centile. British children with severe CP seem relatively very small when their growth data are plotted on non-CP charts, but their data for weight and body mass index fit well to US CP charts and reasonably well for height. The LMS look-up tables will make it possible to calculate z-scores and produce charts in local formats. © 2017 Mac Keith Press.

  3. NEW APPROACH FOR MEASUREMENT OF THE EFFICIENCY OF Cpm AND Cpmk CONTROL CHARTS

    Directory of Open Access Journals (Sweden)

    María Teresa Carot

    2013-12-01

    Full Text Available Process capability analysis is a very effective way for improving process quality by relating process variation to customer requirements. It compares the output of a process to the specification limits by using process capability indices (PCIs. PCIs provide numerical measures on whether aprocess conforms to the defined manufacturing capability prerequisite. In this paper, a new approach based on non-central Chi-Square, ω and φ distributions is presented to design the capability control charts. The main purpose of this work is to investigate the efficiency of the proposed control charts comparing with the traditional control charts. The advantage of using the proposed capability control charts is that, the practitioner can monitor the process mean and the process variability by looking at one chart. Moreover the proposed capability control charts are easily appended to X-R control chart and provide judgments considering the ability of a process to meet requirements. To demonstrate the applicability of the proposed approach an illustrative example is conducted.

  4. Individually customised fetal weight charts derived from ultrasound measurements: the Generation R Study.

    Science.gov (United States)

    Gaillard, Romy; de Ridder, Maria A J; Verburg, Bero O; Witteman, Jacqueline C M; Mackenbach, Johan P; Moll, Henriëtte A; Hofman, Albert; Steegers, Eric A P; Jaddoe, Vincent W V

    2011-12-01

    Maternal and fetal characteristics are important determinants of fetal growth potential, and should ideally be taken into consideration when evaluating fetal growth variation. We developed a model for individually customised growth charts for estimated fetal weight, which takes into account physiological maternal and fetal characteristics known at the start of pregnancy. We used fetal ultrasound data of 8,162 pregnant women participating in the Generation R Study, a prospective, population-based cohort study from early pregnancy onwards. A repeated measurements regression model was constructed, using backward selection procedures for identifying relevant maternal and fetal characteristics. The final model for estimating expected fetal weight included gestational age, fetal sex, parity, ethnicity, maternal age, height and weight. Using this model, we developed individually customised growth charts, and their corresponding standard deviations, for fetal weight from 18 weeks onwards. Of the total of 495 fetuses who were classified as small size for gestational age (customised growth charts were used. 550 fetuses were classified as small size for gestational age using individually customised growth charts, and 135 of them (25%) were classified as normal if the unadjusted reference chart was used. In conclusion, this is the first study using ultrasound measurements in a large population-based study to fit a model to construct individually customised growth charts, taking into account physiological maternal and fetal characteristics. These charts might be useful for use in epidemiological studies and in clinical practice.

  5. Precision and accuracy of commonly used dental age estimation charts for the New Zealand population.

    Science.gov (United States)

    Baylis, Stephanie; Bassed, Richard

    2017-08-01

    Little research has been undertaken for the New Zealand population in the field of dental age estimation. This research to date indicates there are differences in dental developmental rates between the New Zealand population and other global population groups, and within the New Zealand population itself. Dental age estimation methods range from dental development charts to complex biometric analysis. Dental development charts are not the most accurate method of dental age estimation, but are time saving in their use. They are an excellent screening tool, particularly for post-mortem identification purposes, and for assessing variation from population norms in living individuals. The aim of this study was to test the precision and accuracy of three dental development charts (Schour and Massler, Blenkin and Taylor, and the London Atlas), used to estimate dental age of a sample of New Zealand juveniles between the ages of 5 and 18 years old (n=875). Percentage 'best fit' to correct age category and to expected chart stage were calculated to determine which chart was the most precise for the sample. Chronological ages were compared to estimated dental ages using a two-tailed paired t-test (Pdifferences between CA and DA were calculated to determine bias and the absolute mean differences were calculated to indicate accuracy. The results of this study show that while accuracy and precision were low for all charts tested against the New Zealand population sample, the Blenkin and Taylor Australian charts performed best overall. Copyright © 2017 Elsevier B.V. All rights reserved.

  6. Effect of resolution of measurements in the behavior of exponentially weighted moving average control charts.

    Science.gov (United States)

    Meneces, Nora; Olivera, Silvino A; Saccone, Carlos D; Tessore, Julio

    2013-01-01

    Process behavior is known through measurement. All measurements are discrete and transform a continuous process distribution into a discrete (multinomial) measurement distribution. In this article, properties of exponentially weighted moving average control charts (EWMA charts) of measurements are studied through Monte Carlo simulations. Detection capabilities (average run length curves) are presented as a function of measurement resolution and recommendations for proper design of a measuring system are given. EWMA charts measurement resolution requirements are compared to Shewhart charts, and two examples are presented to illustrate behavior differences. Industry performs quality control activities in order to control raw materials, processes, and finished products with the purpose of delivering products to market complying with quality requirements. Different statistical methods are used in chemical, physical, and biological analysis and nearly all control methods will use measurement devices. Quality control is mandatory for many industries, for example, the pharmaceutical industry, and it is a very costly activity. The selection of suitable methods of control and appropriate measurement devices acquire special relevance for obtaining efficient results. Measurement devices require a certain measurement capability and must be fit for the purpose of controlling the quality of processes and products. The equipment capability includes, among other elements, the resolution, which means the "smallest change in a quantity being measured that causes a perceptible change in the corresponding indication". Different control charts have been extensively used for statistical process control. Based on cases from the pharmaceutical industry and simulation tools, this paper studies the influence of resolution of measurement devices in exponentially weighted moving average control charts (EWMA charts). In addition, a comparison of EWMA charts and traditional Shewhart charts is

  7. Performance of Statistical Control Charts with Bilateral Limits of Probability to Monitor Processes Weibull in Maintenance

    Directory of Open Access Journals (Sweden)

    Quintana Alicia Esther

    2015-01-01

    Full Text Available Manufacturing with optimal quality standards is underpinned to the high reliability of its equipment and systems, among other essential pillars. Maintenance Engineering is responsible for planning control and continuous improvement of its critical equipment by any approach, such as Six Sigma. This is nourished by numerous statistical tools highlighting, among them, statistical process control charts. While their first applications were in production, other designs have emerged to adapt to new needs as monitoring equipment and systems in the manufacturing environment. The time between failures usually fits an exponential or Weibull model. The t chart and adjusted t chart, with probabilistic control limits, are suitable alternatives to monitor the mean time between failures. Unfortunately, it is difficult to find publications of them applied to the models Weibull, very useful in contexts such as maintenance. In addition, literature limits the study of their performance to the analysis of the standard metric average run length, thus giving a partial view. The aim of this paper is to explore the performance of the t chart and adjusted t chart using three metrics, two unconventional. To do this, it incorporates the concept of lateral variability, in their forms left and right variability. Major precisions of the behavior of these charts allow to understand the conditions under which are suitable: if the main objective of monitoring lies in detecting deterioration, the t chart with adjustment is recommended. On the other hand, when the priority is to detect improvements, the t chart without adjustment is the best choice. However, the response speed of both charts is very variable from run to run.

  8. Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation

    Science.gov (United States)

    Delpachitra, Pavitra; Palmer, Kirsten; Onwude, Joseph; Meagher, Simon; Rombauts, Luk; Waalwyk, Karen; Bethune, Michael; Tong, Stephen

    2012-01-01

    Accurate determination of gestational age underpins good obstetric care. We assessed the performance of six existing ultrasound reference charts to determine gestational age in 1268 singleton IVF pregnancies, where “true” gestational age could be precisely calculated from date of fertilisation. All charts generated dates significantly different to IVF dates (P IVF singleton cohort. The Monash Chart, but none of the existing charts, accurately determined gestational age among an independent IVF twin cohort (185 twin pairs). When applied to 3052 naturally-conceived singletons scans, The Monash Chart generated estimated due dates that were different to all existing charts (P ≤ 0.004 all comparisons). We conclude that commonly used ultrasound reference charts have inaccuracies. We have generated a CRL reference chart based on true gestational age in an IVF cohort that can accurately determine gestational age at 6–9 weeks of gestation. PMID:22888449

  9. A COMPARISON OF SOME ROBUST BIVARIATE CONTROL CHARTS FOR INDIVIDUAL OBSERVATIONS

    Directory of Open Access Journals (Sweden)

    Moustafa Omar Ahmed Abu - Shawiesh

    2014-06-01

    Full Text Available This paper proposed and considered some bivariate control charts to monitor individual observations from a statistical process control. Usual control charts which use mean and variance-covariance estimators are sensitive to outliers. We consider the following robust alternatives to the classical Hoteling's T2: T2MedMAD, T2MCD, T2MVE a simulation study has been conducted to compare the performance of these control charts. Two real life data are analyzed to illustrate the application of these robust alternatives.

  10. A new risk-adjusted Bernoulli cumulative sum chart for monitoring binary health data.

    Science.gov (United States)

    Rossi, Giuseppe; Sarto, Simone Del; Marchi, Marco

    2016-12-01

    To monitor a health event in patients with a specific risk of developing the event, a risk-adjusted cumulative sum chart is needed. The risk-adjusted cumulative sum chart proposed in the literature has some limitations. Setting appropriate control limits is not straightforward, there is no simple formula for constructing them, and they remain sensitive to changes in the underlying risk distribution and the baseline incidence rate. To overcome these limits, we propose a new risk-adjusted Bernoulli cumulative sum chart as a simple and efficient solution. Analyses of simulated and real data sets illustrate the performance and usefulness of the proposed procedure. © The Author(s) 2014.

  11. LINEAR RELATIONSHIPS TO ASSIST IN PARAMETER SELECTION OF A CUSUM CONTROL CHART

    Directory of Open Access Journals (Sweden)

    Michael Anthony Arnold Cox

    2012-06-01

    Full Text Available The cumulative sum (CUSUM chart is widely employed in quality control. These charts are designed to exhibit acceptable average run lengths (ARL both when the process is in and out of control. For such a chart, for specified ARLs, this paper introduces a technique employing a simple linear approximation for parameter selection. Graphs are produced to provide the coefficients for the fit. The simplicity of this approach should encourage its adoption as an additional tool in the statistical process control kit.

  12. MEASUREMENT ERROR EFFECT ON THE POWER OF CONTROL CHART FOR ZERO-TRUNCATED POISSON DISTRIBUTION

    Directory of Open Access Journals (Sweden)

    Ashit Chakraborty

    2013-09-01

    Full Text Available Measurement error is the difference between the true value and the measured value of a quantity that exists in practice and may considerably affect the performance of control charts in some cases. Measurement error variability has uncertainty which can be from several sources. In this paper, we have studied the effect of these sources of variability on the power characteristics of control chart and obtained the values of average run length (ARL for zero-truncated Poisson distribution (ZTPD. Expression of the power of control chart for variable sample size under standardized normal variate for ZTPD is also derived.

  13. Osteoporosis risk assessment by family practice faculty and residents: a chart review.

    Science.gov (United States)

    Schrager, S; Kausch, T; Bobula, J A

    1999-12-01

    To assess the frequency of osteoporosis risk assessment of postmenopausal women by family practice faculty and residents. Review of 263 charts of women over 50 from 3 residency clinics. Charts were evaluated for evidence of osteoporosis risk assessments or discussion of prevention strategies during the past 2 years. Overall, 35% of the charts contained documentation of some discussion of osteoporosis. Female physicians discussed osteoporosis more than their male colleagues (p osteoporosis discussions decreased as women aged (p osteoporosis discussions with high risk women was low in this sample. Strategies to improve osteoporosis screening are necessary.

  14. User's Guide to the Energy Charting and Metrics Tool (ECAM)

    Energy Technology Data Exchange (ETDEWEB)

    Taasevigen, Danny J.; Koran, William

    2012-02-28

    The intent of this user guide is to provide a brief description of the functionality of the Energy Charting and Metrics (ECAM) tool, including the expanded building re-tuning functionality developed for Pacific Northwest National laboratory (PNNL). This document describes the tool's general functions and features, and offers detailed instructions for PNNL building re-tuning charts, a feature in ECAM intended to help building owners and operators look at trend data (recommended 15-minute time intervals) in a series of charts (both time series and scatter) to analyze air-handler, zone, and central plant information gathered from a building automation system (BAS).

  15. Redesigning the ‘choice architecture’ of hospital prescription charts: a mixed methods study incorporating in situ simulation testing

    Science.gov (United States)

    King, Dominic; Jabbar, Ali; Charani, Esmita; Bicknell, Colin; Wu, Zhe; Miller, Gavin; Gilchrist, Mark; Vlaev, Ivo; Franklin, Bryony Dean; Darzi, Ara

    2014-01-01

    Objectives To incorporate behavioural insights into the user-centred design of an inpatient prescription chart (Imperial Drug Chart Evaluation and Adoption Study, IDEAS chart) and to determine whether changes in the content and design of prescription charts could influence prescribing behaviour and reduce prescribing errors. Design A mixed-methods approach was taken in the development phase of the project; in situ simulation was used to evaluate the effectiveness of the newly developed IDEAS prescription chart. Setting A London teaching hospital. Interventions/methods A multimodal approach comprising (1) an exploratory phase consisting of chart reviews, focus groups and user insight gathering (2) the iterative design of the IDEAS prescription chart and finally (3) testing of final chart with prescribers using in situ simulation. Results Substantial variation was seen between existing inpatient prescription charts used across 15 different UK hospitals. Review of 40 completed prescription charts from one hospital demonstrated a number of frequent prescribing errors including illegibility, and difficulty in identifying prescribers. Insights from focus groups and direct observations were translated into the design of IDEAS chart. In situ simulation testing revealed significant improvements in prescribing on the IDEAS chart compared with the prescription chart currently in use in the study hospital. Medication orders on the IDEAS chart were significantly more likely to include correct dose entries (164/164 vs 166/174; p=0.0046) as well as prescriber's printed name (163/164 vs 0/174; pprescription chart significantly reduced a number of common prescribing errors including dosing errors and illegibility. Positive behavioural change was seen without prior education or support, suggesting that some common prescription writing errors are potentially rectifiable simply through changes in the content and design of prescription charts. PMID:25475242

  16. [Repeatability and reliability of the visual acuity examination on logMAR ETDRS and Snellen chart].

    Science.gov (United States)

    Veselý, P; Synek, S

    2012-05-01

    The main goal of our study was to prove the statistical significant correlation between repeated measurements and test-retest variability TRV expressed with confidence interval CI according to Bland-Altman's method on 95% level of statistical confidence. The methods are threshold interpolation logMAR method on ETDRS chart, whole-line method on Snellen chart and modified threshold interpolation method on Snellen chart with Sloan letters. We had 468 measurements measured with threshold interpolation log MAR method on ETDRS chart, whole-line method on Snellen chart and modified threshold interpolation method on Snellen chart with Sloan letters. The average value of the first sequence of measurements measured with whole-line method on Snellen chart was -0.043 logMAR (min. 1, max. -0.30. SD 0.25) and of the second sequence of measurements was -0.045 logMAR (min. 1, max. -0.30. SD 0.23). The average value of the first sequence of measurements measured with interpolation method on Snellen chart was -0.018 logMAR (min. 0.98, max. -0.30. SD 0.29) and of the second sequence of measurements was -0.024 logMAR (min. 1, max. -0.80. SD 0.29). The average value of the first sequence of measurements measured with interpolation method on ETDRS chart was -0.0612 logMAR (min. 0.72, max. -0.30. SD 0.21) and of the second sequence of measurements was -0.0610 log MAR (min. 0.8, max. -0.28, SD 0.21). We have proved that all methods do not have statistical significant difference between repeated measurements (Wilcoxon paired test, whole-line method on Snellen chart p = 0.74, interpolation method on Snellen chart p = 0.33 and interpolation method on ETDRS p = 0.95) and they also have statistical significant correlations (Spearman correlation coefficient, whole-line method on Snellen chart r = 0.91, p chart r = 0.89, p chart r = 0.89, p chart +/- 0.11 (i.e., 5 letters), with interpolation method on Snellen chart +/- 0.20 (i.e., 10 letters) and with interpolation method on ETDRS +/- 0.08 (i

  17. Differences in Presenting Advance Directives in the Chart, in the Minimum Data Set, and through the Staffs Perceptions

    Science.gov (United States)

    Cohen-Mansfield, Jiska; Libin, Alexander; Lipson, Steven

    2003-01-01

    Purpose: Decisions concerning end-of-life care depend on information contained in advance directives that are documented in residents' charts in the nursing home. The availability of that information depends on the quality of the chart and on the location of the information in the chart. No research was found that compared directives by the manner…

  18. 33 CFR 164.72 - Navigational-safety equipment, charts or maps, and publications required on towing vessels.

    Science.gov (United States)

    2010-07-01

    ..., charts or maps, and publications required on towing vessels. 164.72 Section 164.72 Navigation and... NAVIGATION SAFETY REGULATIONS § 164.72 Navigational-safety equipment, charts or maps, and publications... navigation of the areas possible. (ii) The charts or maps must be either— (A) Current editions or currently...

  19. First-trimester ultrasound dating of twin pregnancy: are singleton charts reliable?

    National Research Council Canada - National Science Library

    Dias, T; Mahsud-Dornan, S; Thilaganathan, B; Papageorghiou, A; Bhide, A

    2010-01-01

    ... A. First-trimester ultrasound dating of twin pregnancy: are singleton charts reliable? BJOG 2010;117:979-984. Objective  The aim of this study was to assess the performance of validated singleton crown-rump length...

  20. Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — These charts, created by the Danish Meteorological Institute (DMI), provide observed and inferred sea ice extent for each summer month from 1893 to 1956. From 1893...

  1. An attribute control chart for a Weibull distribution under accelerated hybrid censoring.

    Science.gov (United States)

    Aslam, Muhammad; Arif, Osama H; Jun, Chi-Hyuck

    2017-01-01

    In this article, an attribute control chart has been proposed using the accelerated hybrid censoring logic for the monitoring of defective items whose life follows a Weibull distribution. The product can be tested by introducing the acceleration factor based on different pressurized conditions such as stress, load, strain, temperature, etc. The control limits are derived based on the binomial distribution, but the fraction defective is expressed only through the shape parameter, the acceleration factor and the test duration constant. Tables of the average run lengths have been generated for different process parameters to assess the performance of the proposed control chart. Simulation studies have been performed for the practical use, where the proposed chart is compared with the Shewhart np chart for demonstration of the detection power of a process shift.

  2. Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — The Arctic and Antarctic Research Institute (AARI) in St. Petersburg, Russia, produces sea ice charts for safety of navigation in the polar regions and for other...

  3. Capabilities of Statistical Residual-Based Control Charts in Short- and Long-Term Stock Trading

    Directory of Open Access Journals (Sweden)

    Žmuk Berislav

    2016-03-01

    Full Text Available The aim of this paper is to introduce and develop additional statistical tools to support the decision-making process in stock trading. The prices of CROBEX10 index stocks on the Zagreb Stock Exchange were used in the paper. The conducted trading simulations, based on the residual-based control charts, led to an investor’s profit in 67.92% cases. In the short run, the residual-based cumulative sum (CUSUM control chart led to the highest portfolio profits. In the long run, when average stock prices were used and 2-sigma control limits set, the residual-based exponential weighted moving average control chart had the highest portfolio profit. In all other cases in the long run, the CUSUM control chart appeared to be the best choice. The acknowledgment that the SPC methods can be successfully used in stock trading will, hopefully, increase their use in this field.

  4. Guideline implementation in clinical practice: Use of statistical process control charts as visual feedback devices

    National Research Council Canada - National Science Library

    Fahad A Al-Hussein

    2009-01-01

    Objective: To use statistical control charts in a series of audits to improve the acceptance and consistant use of guidelines, and reduce the variations in prescription processing in primary health care. Methods...

  5. Guideline implementation in clinical practice: Use of statistical process control charts as visual feedback devices

    Directory of Open Access Journals (Sweden)

    Fahad A Al-Hussein

    2009-01-01

    Conclusions: A process of audits in the context of statistical process control is necessary for any improvement in the implementation of guidelines in primary care. Statistical process control charts are an effective means of visual feedback to the care providers.

  6. Digital Mapping Charting and Geodesy analysis Program (DMAP) Review of Technical Initiatives for FY03

    National Research Council Canada - National Science Library

    Breckenridge, John

    2003-01-01

    The Naval DMAP serves as a technical representative for the Oceanographer of the Navy, NO96 to address significant issues relevant to the Navy's use and development of digital Mapping, Charting & Geodesy (MC&G) data...

  7. Office of Coast Survey's Collection of Print on Demand Charts (POD)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA, National Ocean Service, Office of Coast Survey is responsible to build and maintain a suite of more than 1000 nautical charts that are used by commercial and...

  8. Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set provides estimates of Arctic sea ice extent and concentration from 1901 to 1956 created from a collection of historic, hand-drawn sea ice charts from...

  9. Applying Nightingale charts to evaluate the heterogeneity of biomedical waste in a Hospital

    Directory of Open Access Journals (Sweden)

    Janini Cristina Paiz

    2014-12-01

    Full Text Available OBJECTIVES: to evaluate the heterogeneity of biomedical waste (BW using Nightingale charts.METHOD: cross-sectional study consisting of data collection on wastes (direct observation of receptacles, physical characterisation, and gravimetric composition, development of a Management Information System, and creation of statistical charts.RESULTS: the wastes with the greatest degree of heterogeneity are, in order, recyclable, infectious, and organic wastes; chemical waste had the most efficient segregation; Nightingale charts are useful for quick visualisation and systematisation of information on heterogeneity.CONCLUSION: the development of a management information system and the use of Nightingale charts allows for the identification and correction of errors in waste segregation, which increase health risks and contamination by infectious and chemical wastes and reduce the sale and profit from recyclables.

  10. Utility and recognition of lines and linear patterns on electronic displays depicting aeronautical charting information

    Science.gov (United States)

    2009-01-01

    This report describes a study conducted to explore the utility and recognition of lines and linear patterns on electronic displays depicting aeronautical charting information. The study gathered data from a large number of pilots who conduct all type...

  11. Mutation-based growth charts for SEDC and other COL2A1 related dysplasias

    DEFF Research Database (Denmark)

    Terhal, Paulien A; van Dommelen, Paula; Le Merrer, Martine

    2012-01-01

    From data collected via a large international collaborative study, we have constructed a growth chart for patients with molecularly confirmed congenital spondylo-epiphyseal dysplasia (SEDC) and other COL2A1 related dysplasias. The growth chart is based on longitudinal height measurements of 79...... patients with glycine substitutions in the triple-helical domain of COL2A1. In addition, measurements of 27 patients with other molecular defects, such as arginine to cysteine substitutions, splice mutations, and mutations in the C-terminal propeptide have been plotted on the chart. Height of the patients...... progressively deviate from that of normal children: compared to normal WHO charts, the mean length/height is -2.6 SD at birth, -4.2 SD at 5 years, and -5.8 SD in adulthood. The mean adult height (male and female combined) of patients with glycine substitutions in the triple-helical region is 138.2 cm...

  12. The Effect of Autocorrelation on the Hotelling T-2 Control Chart

    DEFF Research Database (Denmark)

    Vanhatalo, Erik; Kulahci, Murat

    2015-01-01

    One of the basic assumptions for traditional univariate and multivariate control charts is that the data are independent in time. For the latter, in many cases, the data are serially dependent (autocorrelated) and cross-correlated because of, for example, frequent sampling and process dynamics....... It is well known that the autocorrelation affects the false alarm rate and the shift-detection ability of the traditional univariate control charts. However, how the false alarm rate and the shiftdetection ability of the Hotelling T-2 control chart are affected by various autocorrelation and cross......- correlation structures for different magnitudes of shifts in the process mean is not fully explored in the literature. In this article, the performance of the Hotelling T-2 control chart for different shift sizes and various autocorrelation and cross- correlation structures are compared based on the average...

  13. Accident investigation of construction sites in Qom city using Pareto chart (2009-2012

    Directory of Open Access Journals (Sweden)

    M. H. Beheshti

    2015-07-01

    .Conclusions: Employing Pareto charts as a method for analyzing and identification of accident causes can have an effective role in the management of work-related accidents, proper allocation of funds and time.

  14. Canadian Ice Service Arctic Regional Sea Ice Charts in SIGRID-3 Format

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Canadian Ice Service (CIS) produces digital Arctic regional sea ice charts for marine navigation, climate research, and input to the Global Digital Sea Ice Data...

  15. Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Arctic and Antarctic Research Institute (AARI) in St. Petersburg, Russia, produces sea ice charts for safety of navigation in the polar regions and for other...

  16. China Dimensions Data Collection: Fundamental GIS: Digital Chart of China, 1:1M, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — Fundamental GIS: Digital Chart of China, 1:1M, Version 1 consists of vector maps of China and surrounding areas. The maps include roads, railroads, drainage systems,...

  17. The Dehn Collection of Arctic Sea Ice Charts, 1953-1986, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — The National Snow and Ice Data Center holds a collection of charts depicting ice conditions in the seas off Alaska and western Canadian coasts. Ice edge position and...

  18. Evaluating Faculty Workload: An Application of Process Control Charts with Supplementary Run Rules.

    Science.gov (United States)

    Lau, R. S. M.

    1996-01-01

    Describes a method for evaluating faculty workload (measured by time spent in teaching, research, and service) by using process control charts with supplementary run rules that can identify potential overload or underload. (SK)

  19. Accuracy of Sea Charts and Navigational Publications and the Influence of Printing

    Directory of Open Access Journals (Sweden)

    Josip Kasun

    2003-07-01

    Full Text Available The main printed products of hydrographic organizations are sea charts and navigational publications. The disproportion of their information content with the actual data is a direct consequence of processes applied in their production, updating and actual changes. The information content of sea charts and navigational publications contains inherent and influent deviations. The accuracy of sea charts and navigational publications changes and decreases in the course of time. It equals the maximum accuracy of applied technology, including the graphic technology during the process of production, i.e. printing. The accuracy is in the function of time and updating procedure. The role of printing in the process of production is to increase the accuracy of sea charts and navigational publications by applying appropriate technology, standardization and reducing the time of graphic preparations and printing.

  20. Slope of psychometric functions and termination rule analysis for low contrast acuity charts.

    Science.gov (United States)

    Carkeet, Andrew; Bailey, Ian L

    2017-03-01

    To assess whether the slopes of psychometric functions for measuring low contrast letter acuity were different from those for measuring high contrast letter acuity. Ten participants, wearing their best spectacle correction, were assessed monocularly. Stimuli were logarithmic progression charts, generated on a computer monitor, with nine rows of five randomised Sloan letters generated in either high contrast format (Weber contrast 99.2%) or low contrast format (Weber contrast 18.7%). For each participant, psychometric functions were generated by probit analysis of the data on each of 16 attempts at a low contrast chart and 16 attempts at a high contrast chart. Each of these probit fits yielded an estimate of Probit Size which provided information about how steep or flat the psychometric function was, along with an estimate of Probit Acuity Threshold. Probit Size was significantly larger (p Probit Sizes in logMAR were 0.099 (SEM 0.022) for low contrast charts and 0.071 (SEM 0.009) for high contrast charts if a guess rate of 1/26 was assumed, or were 0.086 (SEM 0.019) for low contrast charts and 0.064 for high contrast charts if a guess rate of 1/10 was assumed. Monte Carlo analysis showed that these means were likely to be biased estimates, with true Probit Size probably being larger (i.e. slightly flatter fits) by 0.016-0.019 logMAR. As expected, Probit Acuity Thresholds were poorer for low contrast charts than for high contrast charts (p < 0.001). Our Monte Carlo modelling showed that such differences in acuity psychometric functions would be expected to give greater intra-subject variability in low contrast letter-by-letter acuity thresholds than for high contrast letter-by-letter acuity thresholds, and that this difference would depend on the termination rule used when measuring acuity. Likewise the variation in letter-by- letter acuity thresholds with termination rule will be different for high and low contrast charts. For low contrast and high contrast Sloan

  1. [Growth of exclusively breast-fed Chilean infants in relation to new 1994 WHO Reference Charts].

    Science.gov (United States)

    Atalah Samur, E; Castillo Lancelloti, C

    1997-03-01

    The aim of this study was to evaluate the growth of Chilean infants from medium-to-low socioeconomic status fed according to the current WHO guidelines. Growth pattern was compared to a recent reference chart published by WHO for infants, and the NCHS/WHO growth standards. The source of information was a nation-wide infant feeding survey conducted in 1993. From this database, infants aged 1-12 month +/- 5 days, with exclusive breast feeding until the fourth or sixth month were selected (939 males, 940 females). The weight-for-age z-score (WAZ), and the height-for-age z-score (HAZ) were calculated using both the NCHS/ WHO and the new WHO reference growth charts. At each month of age, WHZ and HAZ results were grouped in the following categories: = 2.0. Observed WAZ at the first month of age was below the new WHO reference chart (0.32 z-score), increasing up to 1.29 z-score at the tenth month. The HAZ results were lower the WHO reference chart throughout the period studied, although a trend to improved values was noted during the second semester (F = 6.01 p < 0.001). Growth pattern of the studied group was more similar to the NCHS/WHO chart than the new chart proposed by WHO. As a consequence, the new WHO reference chart identifies a higher proportion of the infants as having a subnormal nutritional status during the first semester of life, compared to those classified in this category by the NCHS/WHO standards (p < 0.001). This can be a factor for the introduction of complementary foods early in life. The relative homogeneity of the population used as source of the WHO reference chart may limit it use in developing countries.

  2. Prioritization and selection of parameters for control chart implementation based on technical criticality and cost criticality

    Directory of Open Access Journals (Sweden)

    Sirintra Tan-intara-art

    2013-07-01

    Full Text Available An important problem in control chart implementation is the availability of resources to collect and analyze data for control charts implementation. This paper proposes a method to prioritize and select final product parameters to control. The prioritization is based on cost of quality and technical criticality of those parameters. The prioritization method is demonstrated by a case study of flexible printed circuit manufacturing.

  3. Quality initiatives: statistical control charts: simplifying the analysis of data for quality improvement.

    Science.gov (United States)

    Cheung, Yvonne Y; Jung, Boyoun; Sohn, Jae Ho; Ogrinc, Greg

    2012-01-01

    Quality improvement (QI) projects are an integral part of today's radiology practice, helping identify opportunities for improving outcomes by refining work processes. QI projects are typically driven by outcome measures, but the data can be difficult to interpret: The numbers tend to fluctuate even before a process is altered, and after a QI intervention takes place, it may be even more difficult to determine the cause of such vacillations. Control chart analysis helps the QI project team identify variations that should be targeted for intervention and avoid tampering in processes in which variation is random or harmless. Statistical control charts make it possible to distinguish among random variation or noise in the data, outlying tendencies that should be targeted for future intervention, and changes that signify the success of previous intervention. The data on control charts are plotted over time and integrated with various graphic devices that represent statistical reasoning (eg, control limits) to allow visualization of the intensity and overall effect-negative or positive-of variability. Even when variability has no substantial negative effect, appropriate intervention based on the results of control chart analysis can help increase the efficiency of a process by optimizing the central tendency of the outcome measure. Different types of control charts may be used to analyze the same outcome dataset: For example, paired charts of individual values (x) and the moving range (mR) allow robust and reliable analyses of most types of data from radiology QI projects. Many spreadsheet programs and templates are available for use in creating x-mR charts and other types of control charts.

  4. The Usage of Time Series Control Charts for Financial Process Analysis

    OpenAIRE

    Kovářík Martin; Klímek Petr

    2012-01-01

    We will deal with financial proceedings of the company using methods of SPC (Statistical Process Control), specifically through time series control charts. The paper will outline the intersection of two disciplines which are econometrics and statistical process control. The theoretical part will discuss the methodology of time series control charts and in the research part there will be this methodology demonstrated in three case studies. The first study will focus on the regulation of simula...

  5. p-charts in the quality control of the grading process in the high education

    Directory of Open Access Journals (Sweden)

    Savić Mirko

    2006-01-01

    Full Text Available European countries are making efforts to change their educational system These changes include implementation of the ECTS (European Credit Transfer and Accumulation System and are based on the Bologna Declaration. Adoption of ECTS will necessitate new quality standards in higher education especially in grading procedures. With only small modifications, the control charts(such as p-charts used in production and distribution applications can be applied to educational purposes.

  6. Charts of episodes and chronometric duration have implications for provinces such as the Kaapvaal

    Directory of Open Access Journals (Sweden)

    H. de la R. Winter

    1997-07-01

    Full Text Available An accurate basin analysis and knowledge of its evolutionary development being a prerequisite framework for metallogenic model­ling, a procedure was developed for the Kaapvaal Province to maximise quantitative observational data and constrain assumptions and interpretations. Employing an episodes chart to display various events interactively and its conversion to a geochronometric chart as the geological model, the method was applied to existing stratigraphic studies.

  7. Electroconvulsive therapy for treating schizophrenia: a chart review of patients from two catchment areas

    DEFF Research Database (Denmark)

    Kristensen, Diana; Bauer, Jeanett; Pedersen, Ida Hageman

    2011-01-01

    To examine disease and treatment characteristics of patients with schizophrenia treated with electroconvulsive therapy (ECT). We examined charts from 79 patients diagnosed with schizophrenia (n = 55), persistent delusional disorders (n = 7), and schizoaffective disorders (n = 17) between 2003...... schizophrenia. Rather, it reflects the degree of relief from psychosis and disruptive behaviour, as described in the patient charts. The treatment was often offered to patients after considerable disease durations....

  8. Evaluation of temperature–pulse centile charts in identifying serious bacterial illness: observational cohort study

    OpenAIRE

    Brent, Andrew J; Lakhanpaul, Monica; Ninis, Nelly; Levin, Michael; MacFaul, Roddy; Thompson, Matthew

    2011-01-01

    Background Distinguishing serious bacterial infection (SBI) from milder/self-limiting infections is often difficult. Interpretation of vital signs is confounded by the effect of temperature on pulse and respiratory rate. Temperature–pulse centile charts have been proposed to improve the predictive value of pulse rate in the clinical assessment of children with suspected SBI. Objectives To assess the utility of proposed temperature–pulse centile charts in the clinical assessment of children wi...

  9. Development of Abrasive Selection Model/Chart for Palm Frond Broom Peeling Machine Design

    OpenAIRE

    Nwankwojike; B. Nduka

    2014-01-01

    A model for predicting the friction required by a palm frond broom peeling machine for effective peeling of palm leaf to broom bristle and a chart for selecting the best abrasive material for this machine’s peeling operation were developed in this study using mechanistic modeling method. The model quantified the relationship between the coefficient of friction and other operational parameters of this machine while the abrasives selection chart constitutes a plot of this measured f...

  10. Discrepancy Between Identification of Early-Term Elective Deliveries by Manual Chart Review and Data Vendor.

    Science.gov (United States)

    Yamasato, Kelly; Tsai, Pai-Jong Stacy; Bartholomew, Marguerite; Durbin, Marsha; Kimata, Chieko; Kaneshiro, Bliss

    2016-12-01

    Elective delivery from 37 to 39 weeks gestation (early-term deliveries) is a Joint Commission National Quality Measure, and hospitals report on early-term elective delivery rates through Outcome Research Yields Excellence (ORYX) vendors. The objective of this study was to compare early-term elective deliveries, identified through ORYX vendors with those identified through manual chart review, the traditional method of medical record review. We reviewed early-term labor inductions and cesarean deliveries at a single hospital from June 1, 2010 to May 31, 2012. Rates of early-term elective deliveries identified by the data vendor were compared to physician chart review. Overall, the rate of elective deliveries by ORYX was 3% compared to 2% by physician chart review (RR 1.51 [95% CI 1.12-2.03], P chart review, vendors classified significantly more inductions and cesareans as elective (P chart review, including 69.0% of cesareans and 36.1% of inductions. Findings from this study suggest substantial discrepancy between identification of early-term elective deliveries by data vendors and physician chart review, and indicate that vendor-derived data may overestimate the number of electively delivered patients.

  11. Overview of the Consortium of Hospitals Advancing Research on Tobacco (CHART).

    Science.gov (United States)

    Riley, William T; Stevens, Victor J; Zhu, Shu-Hong; Morgan, Glen; Grossman, Debra

    2012-08-01

    The Consortium of Hospitals Advancing Research on Tobacco (CHART) is a network of six projects and a research coordinating unit funded by the National Heart, Lung, and Blood Institute, the National Cancer Institute, the National Institute on Drug Abuse, and the National Institutes of Health (NIH) Office of Behavioral and Social Science Research. The CHART projects will assess the effectiveness and cost-effectiveness of smoking cessation interventions initiated during hospitalization and continued post-discharge. Along with a seventh project funded previously under the NIH Challenge grants, the CHART projects will assess smoking cessation strategies delivered to approximately 10,000 hospitalized smokers across a geographically diverse group of nearly 20 private, public, academic, and community hospitals. The CHART research coordinating unit at Kaiser Permanente Center for Health Research provides organizational and data coordination support, facilitating the development of common measures for combining data from multiple CHART projects. The targeted enrollment in CHART, if achieved, will represent the largest, most diverse pooled dataset of hospitalized smokers receiving smoking cessation assistance, and is designed to contribute to the dissemination and implementation of smoking cessation interventions provided by hospital systems.

  12. The Usage of Time Series Control Charts for Financial Process Analysis

    Directory of Open Access Journals (Sweden)

    Kovářík Martin

    2012-09-01

    Full Text Available We will deal with financial proceedings of the company using methods of SPC (Statistical Process Control, specifically through time series control charts. The paper will outline the intersection of two disciplines which are econometrics and statistical process control. The theoretical part will discuss the methodology of time series control charts and in the research part there will be this methodology demonstrated in three case studies. The first study will focus on the regulation of simulated financial flows for a company by CUSUM control chart. The second study will involve the regulation of financial flows for a heteroskedastic financial process by EWMA control chart. The last case study of our paper will be devoted to applications of ARIMA, EWMA and CUSUM control charts in the financial data that are sensitive to the mean shifting while calculating the autocorrelation in the data. In this paper, we highlight the versatility of control charts not only in manufacturing but also in managing the financial stability of cash flows.

  13. Dynamic probability control limits for risk-adjusted CUSUM charts based on multiresponses.

    Science.gov (United States)

    Zhang, Xiang; Loda, Justin B; Woodall, William H

    2017-07-20

    For a patient who has survived a surgery, there could be several levels of recovery. Thus, it is reasonable to consider more than two outcomes when monitoring surgical outcome quality. The risk-adjusted cumulative sum (CUSUM) chart based on multiresponses has been developed for monitoring a surgical process with three or more outcomes. However, there is a significant effect of varying risk distributions on the in-control performance of the chart when constant control limits are applied. To overcome this disadvantage, we apply the dynamic probability control limits to the risk-adjusted CUSUM charts for multiresponses. The simulation results demonstrate that the in-control performance of the charts with dynamic probability control limits can be controlled for different patient populations because these limits are determined for each specific sequence of patients. Thus, the use of dynamic probability control limits for risk-adjusted CUSUM charts based on multiresponses allows each chart to be designed for the corresponding patient sequence of a surgeon or a hospital and therefore does not require estimating or monitoring the patients' risk distribution. Copyright © 2017 John Wiley & Sons, Ltd. Copyright © 2017 John Wiley & Sons, Ltd.

  14. Dynamic probability control limits for risk-adjusted Bernoulli CUSUM charts.

    Science.gov (United States)

    Zhang, Xiang; Woodall, William H

    2015-11-10

    The risk-adjusted Bernoulli cumulative sum (CUSUM) chart developed by Steiner et al. (2000) is an increasingly popular tool for monitoring clinical and surgical performance. In practice, however, the use of a fixed control limit for the chart leads to a quite variable in-control average run length performance for patient populations with different risk score distributions. To overcome this problem, we determine simulation-based dynamic probability control limits (DPCLs) patient-by-patient for the risk-adjusted Bernoulli CUSUM charts. By maintaining the probability of a false alarm at a constant level conditional on no false alarm for previous observations, our risk-adjusted CUSUM charts with DPCLs have consistent in-control performance at the desired level with approximately geometrically distributed run lengths. Our simulation results demonstrate that our method does not rely on any information or assumptions about the patients' risk distributions. The use of DPCLs for risk-adjusted Bernoulli CUSUM charts allows each chart to be designed for the corresponding particular sequence of patients for a surgeon or hospital. Copyright © 2015 John Wiley & Sons, Ltd.

  15. Statistical Control Charts: Performances of Short Term Stock Trading in Croatia

    Directory of Open Access Journals (Sweden)

    Dumičić Ksenija

    2015-03-01

    Full Text Available Background: The stock exchange, as a regulated financial market, in modern economies reflects their economic development level. The stock market indicates the mood of investors in the development of a country and is an important ingredient for growth. Objectives: This paper aims to introduce an additional statistical tool used to support the decision-making process in stock trading, and it investigate the usage of statistical process control (SPC methods into the stock trading process. Methods/Approach: The individual (I, exponentially weighted moving average (EWMA and cumulative sum (CUSUM control charts were used for gaining trade signals. The open and the average prices of CROBEX10 index stocks on the Zagreb Stock Exchange were used in the analysis. The statistical control charts capabilities for stock trading in the short-run were analysed. Results: The statistical control chart analysis pointed out too many signals to buy or sell stocks. Most of them are considered as false alarms. So, the statistical control charts showed to be not so much useful in stock trading or in a portfolio analysis. Conclusions: The presence of non-normality and autocorellation has great impact on statistical control charts performances. It is assumed that if these two problems are solved, the use of statistical control charts in a portfolio analysis could be greatly improved.

  16. Ince-Strutt stability charts for ship parametric roll resonance in irregular waves

    Science.gov (United States)

    Zhang, Xiao; Yang, He-zhen; Xiao, Fei; Xu, Pei-ji

    2017-08-01

    Ince-Strutt stability chart of ship parametric roll resonance in irregular waves is conducted and utilized for the exploration of the parametric roll resonance in irregular waves. Ship parametric roll resonance will lead to large amplitude roll motion and even wreck. Firstly, the equation describing the parametric roll resonance in irregular waves is derived according to Grim's effective theory and the corresponding Ince-Strutt stability charts are obtained. Secondly, the differences of stability charts for the parametric roll resonance in irregular and regular waves are compared. Thirdly, wave phases and peak periods are taken into consideration to obtain a more realistic sea condition. The influence of random wave phases should be taken into consideration when the analyzed points are located near the instability boundary. Stability charts for different wave peak periods are various. Stability charts are helpful for the parameter determination in design stage to better adapt to sailing condition. Last, ship variables are analyzed according to stability charts by a statistical approach. The increase of the metacentric height will help improve ship stability.

  17. Assessing achievement in nephrology training: using clinic chart audits to quantitatively screen competency.

    Science.gov (United States)

    Yuan, Christina M; Prince, Lisa K; Zwettler, Amy J; Nee, Robert; Oliver, James D; Abbott, Kevin C

    2014-11-01

    Entrustable professional activities (EPAs) are complex tasks representing vital physician functions in multiple competencies, used to demonstrate trainee development along milestones. Managing a nephrology outpatient clinic has been proposed as an EPA for nephrology fellowship training. Retrospective cohort study of nephrology fellow outpatient clinic performance using a previously validated chart audit tool. Outpatient encounter chart audits for training years 2008-2009 through 2012-2013, corresponding to participation in the Nephrology In-Training Examination (ITE). A median of 7 auditors (attending nephrologists) audited a mean of 1,686±408 (SD) charts per year. 18 fellows were audited; 12, in both of their training years. Proportion of chart audit and quality indicator deficiencies. Longitudinal deficiency and ITE performance. Among fellows audited in both their training years, chart audit deficiencies were fewer in the second versus the first year (5.4%±2.0% vs 17.3%±7.0%; Pnephrology outpatient clinic is an EPA. The chart audit tool was used to assess longitudinal fellow performance in managing a nephrology outpatient clinic. Failure to progress may be quantitatively identified and remediated. The tool identifies deficiencies in all 6 competencies, not just medical knowledge, the primary focus of the ITE and the nephrology subspecialty board examination. Published by Elsevier Inc.

  18. Monitoring Poisson observations using combined applications of Shewhart and EWMA charts

    Science.gov (United States)

    Abujiya, Mu'azu Ramat

    2017-11-01

    The Shewhart and exponentially weighted moving average (EWMA) charts for nonconformities are the most widely used procedures of choice for monitoring Poisson observations in modern industries. Individually, the Shewhart EWMA charts are only sensitive to large and small shifts, respectively. To enhance the detection abilities of the two schemes in monitoring all kinds of shifts in Poisson count data, this study examines the performance of combined applications of the Shewhart, and EWMA Poisson control charts. Furthermore, the study proposes modifications based on well-structured statistical data collection technique, ranked set sampling (RSS), to detect shifts in the mean of a Poisson process more quickly. The relative performance of the proposed Shewhart-EWMA Poisson location charts is evaluated in terms of the average run length (ARL), standard deviation of the run length (SDRL), median run length (MRL), average ratio ARL (ARARL), average extra quadratic loss (AEQL) and performance comparison index (PCI). Consequently, all the new Poisson control charts based on RSS method are generally more superior than most of the existing schemes for monitoring Poisson processes. The use of these combined Shewhart-EWMA Poisson charts is illustrated with an example to demonstrate the practical implementation of the design procedure.

  19. Fusing Multiscale Charts into 3D ENC Systems Based on Underwater Topography and Remote Sensing Image

    Directory of Open Access Journals (Sweden)

    Tao Liu

    2015-01-01

    Full Text Available The purpose of this study is to propose an approach to fuse multiscale charts into three-dimensional (3D electronic navigational chart (ENC systems based on underwater topography and remote sensing image. This is the first time that the fusion of multiscale standard ENCs in the 3D ENC system has been studied. First, a view-dependent visualization technology is presented for the determination of the display condition of a chart. Second, a map sheet processing method is described for dealing with the map sheet splice problem. A process order called “3D order” is designed to adapt to the characteristics of the chart. A map sheet clipping process is described to deal with the overlap between the adjacent map sheets. And our strategy for map sheet splice is proposed. Third, the rendering method for ENC objects in the 3D ENC system is introduced. Fourth, our picking-up method for ENC objects is proposed. Finally, we implement the above methods in our system: automotive intelligent chart (AIC 3D electronic chart display and information systems (ECDIS. And our method can handle the fusion problem well.

  20. The run chart: a simple analytical tool for learning from variation in healthcare processes.

    Science.gov (United States)

    Perla, Rocco J; Provost, Lloyd P; Murray, Sandy K

    2011-01-01

    Those working in healthcare today are challenged more than ever before to quickly and efficiently learn from data to improve their services and delivery of care. There is broad agreement that healthcare professionals working on the front lines benefit greatly from the visual display of data presented in time order. To describe the run chart-an analytical tool commonly used by professionals in quality improvement but underutilised in healthcare. A standard approach to the construction, use and interpretation of run charts for healthcare applications is developed based on the statistical process control literature. Run charts allow us to understand objectively if the changes we make to a process or system over time lead to improvements and do so with minimal mathematical complexity. This method of analyzing and reporting data is of greater value to improvement projects and teams than traditional aggregate summary statistics that ignore time order. Because of its utility and simplicity, the run chart has wide potential application in healthcare for practitioners and decision-makers. Run charts also provide the foundation for more sophisticated methods of analysis and learning such as Shewhart (control) charts and planned experimentation.

  1. Control charts for identifying systematic errors using control sera to detect antibody to Salmonella in an indirect ELISA

    DEFF Research Database (Denmark)

    Bak, H.; Barfod, Kristen

    2008-01-01

    This study evaluated the preparation of Shewhart's control charts using the concept of rational subgroups for monitoring the Salmonella antibody ELISA used for surveillance of Danish pig herds. Control charts were prepared for a buffer control sample, a negative serum sample and a positive serum......, and separate control charts were prepared for five robots. The control limits were set at six times the standard deviation for In(OD) and three times the standard deviation for OD%. Evaluation based on a number of sensitising rules for control charts produced from historical data showed that use of the control...... charts could reveal systematic analytical errors....

  2. A One-Class Classification-Based Control Chart Using the K-Means Data Description Algorithm

    OpenAIRE

    Gani, Walid; Limam, Mohamed

    2014-01-01

    This paper aims to enlarge the family of one-class classification-based control charts, referred to as OC-charts, and extend their applications. We propose a new OC-chart using the K-means data description (KMDD) algorithm, referred to as KM-chart. The proposed KM-chart gives the minimum closed spherical boundary around the in-control process data. It measures the distance between the center of KMDD-based sphere and the new incoming sample to be monitored. Any sample having a distance grea...

  3. Multivariate control charts based on net analyte signal (NAS) and Raman spectroscopy for quality control of carbamazepine.

    Science.gov (United States)

    Rocha, Werickson Fortunato de Carvalho; Poppi, Ronei Jesus

    2011-10-31

    Raman spectroscopy and control charts based on the net analyte signal (NAS) were applied to polymorphic characterization of carbamazepine. Carbamazepine presents four polymorphic forms: I-IV (dihydrate). X-ray powder diffraction was used as a reference technique. The control charts were built generating three charts: the NAS chart that corresponds to the analyte of interest (form III in this case), the interference chart that corresponds to the contribution of other compounds in the sample and the residual chart that corresponds to nonsystematic variations. For each chart, statistical limits were developed using samples within the quality specifications. It was possible to identify the different polymorphic forms of carbamazepine present in pharmaceutical formulations. Thus, an alternative method for the quality monitoring of the carbamazepine polymorphic forms after the crystallization process is presented. Copyright © 2011 Elsevier B.V. All rights reserved.

  4. Multivariate control charts based on net analyte signal (NAS) and Raman spectroscopy for quality control of carbamazepine

    Energy Technology Data Exchange (ETDEWEB)

    Rocha, Werickson Fortunato de Carvalho [Institute of Chemistry, University of Campinas - UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP (Brazil); National Institute of Metrology, Standardization and Industrial Quality, Inmetro, Dimci/Dquim - Directorate of Metrology, Science and Industry/Division of Chemical Metrology, Av. Nossa Senhora das Gracas 50, Building 6, 25250-020, Xerem, Duque de Caxias, RJ (Brazil); Poppi, Ronei Jesus, E-mail: ronei@iqm.unicamp.br [Institute of Chemistry, University of Campinas - UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP (Brazil); National Institute of Science and Technology (INCT) for Bioanalytics, 13083-970 Campinas, SP (Brazil)

    2011-10-31

    Raman spectroscopy and control charts based on the net analyte signal (NAS) were applied to polymorphic characterization of carbamazepine. Carbamazepine presents four polymorphic forms: I-IV (dihydrate). X-ray powder diffraction was used as a reference technique. The control charts were built generating three charts: the NAS chart that corresponds to the analyte of interest (form III in this case), the interference chart that corresponds to the contribution of other compounds in the sample and the residual chart that corresponds to nonsystematic variations. For each chart, statistical limits were developed using samples within the quality specifications. It was possible to identify the different polymorphic forms of carbamazepine present in pharmaceutical formulations. Thus, an alternative method for the quality monitoring of the carbamazepine polymorphic forms after the crystallization process is presented.

  5. Evaluation of terrain geomorphometric characteristics for ground clearance charts production

    Directory of Open Access Journals (Sweden)

    Mirko A. Borisov

    2011-01-01

    Full Text Available Geomorphometric exploration applied in the military terrain analysis is based on the GIS methodology of spatial analyses and is related primarily to military terrain analyses. It includes relief assessment aiming at producing ground clearance charts for the analysis of terrain maneuverability and its deployment, cover and concealment possibilities. An evaluation analysis of geomorphological parameters was performed for the Avala test area using a few terrain parameters (visibility, terrain aspect and slope as well as some terrain qualitative categories (e.g. vegetation density. Terrain slope Slope and aspect are morphometric terrain parameters that can be derived directly from the DTM using some GIS operations. Slope is the first derivative of a surface and has both magnitude and direction. Slope is perhaps the most important aspect of the surface form, since surfaces are formed completely of slopes, and slope angles control the gravitational force available for geomorphic work. Mathematically, the tangent of the slope angle is the first derivative of altitude, and it is a tangent or percent slope as this surface parameter is generally referred to. Slope is defined at each point as the slope of a plane tangent to the surface at that point. In practice, however, slope is generally measured over a finite distance, especially when data are obtained from a contour map. Terrain aspect Aspect is also the first derivative of a surface and has both magnitude and direction. The term aspect is defined as the direction of the biggest slope vector on the tangent plane projected onto the horizontal plane. Aspect is the bearing (or azimuth of the slope direction, and its angle ranges from 0 to 360°. Analyses of terrain slope and ground clearance for military forces The analysis of land assessment of the Avala test area included the definition of relief categories in relation to cover and concealment purposes with the aim to include the geomorphological basis

  6. Biophysical Profile

    Science.gov (United States)

    ... and pregnancy High-risk pregnancy Biophysical profile About Advertisement Mayo Clinic does not endorse companies or products. ... a Job Site Map About This Site Twitter Facebook Google YouTube Pinterest Mayo Clinic is a not- ...

  7. Observation chart design features affect the detection of patient deterioration: a systematic experimental evaluation.

    Science.gov (United States)

    Christofidis, Melany J; Hill, Andrew; Horswill, Mark S; Watson, Marcus O

    2016-01-01

    To systematically evaluate the impact of several design features on chart-users' detection of patient deterioration on observation charts with early-warning scoring-systems. Research has shown that observation chart design affects the speed and accuracy with which abnormal observations are detected. However, little is known about the contribution of individual design features to these effects. A 2 × 2 × 2 × 2 mixed factorial design, with data-recording format (drawn dots vs. written numbers), scoring-system integration (integrated colour-based system vs. non-integrated tabular system) and scoring-row placement (grouped vs. separate) varied within-participants and scores (present vs. absent) varied between-participants by random assignment. 205 novice chart-users, tested between March 2011-March 2014, completed 64 trials where they saw real patient data presented on an observation chart. Each participant saw eight cases (four containing abnormal observations) on each of eight designs (which represented a factorial combination of the within-participants variables). On each trial, they assessed whether any of the observations were physiologically abnormal, or whether all observations were normal. Response times and error rates were recorded for each design. Participants responded faster (scores present and absent) and made fewer errors (scores absent) using drawn-dot (vs. written-number) observations and an integrated colour-based (vs. non-integrated tabular) scoring-system. Participants responded faster using grouped (vs. separate) scoring-rows when scores were absent, but separate scoring-rows when scores were present. Our findings suggest that several individual design features can affect novice chart-users' ability to detect patient deterioration. More broadly, the study further demonstrates the need to evaluate chart designs empirically. © 2015 John Wiley & Sons Ltd.

  8. Comparison of Snellen and Early Treatment Diabetic Retinopathy Study charts using a computer simulation

    Directory of Open Access Journals (Sweden)

    Reuben R. Shamir

    2016-01-01

    Full Text Available AIM: To compare accuracy, reproducibility and test duration for the Snellen and the Early Treatment Diabetic Retinopathy Study (ETDRS charts, two main tools used to measure visual acuity (VA. METHODS: A computer simulation was programmed to run multiple virtual patients, each with a unique set of assigned parameters, including VA, false-positive and false-negative error values. For each virtual patient, assigned VA was randomly chosen along a continuous scale spanning the range between 1.0 to 0.0 logMAR units (equivalent to 20/200 to 20/20. Each of 30 000 virtual patients were run ten times on each of the two VA charts. RESULTS: Average test duration (expressed as the total number of characters presented during the test ±SD was 12.6±11.1 and 31.2±14.7 characters, for the Snellen and ETDRS, respectively. Accuracy, defined as the absolute difference (± SD between the assigned VA and the measured VA, expressed in logMAR units, was superior in the ETDRS charts: 0.12±0.14 and 0.08±0.08, for the Snellen and ETDRS charts, respectively. Reproducibility, expressed as test-retest variability, was superior in the ETDRS charts: 0.23±0.17 and 0.11±0.09 logMAR units, for the Snellen and ETDRS charts, respectively. CONCLUSION: A comparison of true (assigned VA to measured VA, demonstrated, on average, better accuracy and reproducibility of the ETDRS chart, but at the penalty of significantly longer test duration. These differences were most pronounced in the low VA range. The reproducibility using a simulation approach is in line with reproducibility values found in several clinical studies.

  9. Effect of the resolution of measurements in the behavior of the shewhart control charts for means.

    Science.gov (United States)

    Meneces, Nora; Olivera, Silvino A; Saccone, Carlos D; Tessore, Julio

    2010-01-01

    Measurements of limited resolution change the behavior of a Shewhart average chart in two ways. The standard deviation of measurements differs from process standard deviation due to rounded values and discreteness of values of subgroup averages. The probability of getting a point in control depends on the position of accessible values relative to the position of control limits. In many processes of the pharmaceutical industry, Shewhart control charts are very useful tools. In this paper, one example about the use of these charts in the abovementioned industry is given. Resolution requirements of a measurement system for successful operation of an average Shewhart control chart are presented. Recommendations are given for acceptable criteria about the resolution of the measurement system when an average control chart is implemented, and are compared with already existing literature. It is vital for the pharmaceutical industry to deliver safe medicines to patients. Quality control is a part of the quality management that is oriented to control raw materials, processes, and finished products. This constitutes a usual activity of pharmaceutical companies that use for that purpose different chemical, physical, and biological assays. Any control method will use measurement devices. The measurement devices require a certain measurement capability and must be fit for the purpose of controlling the quality of pharmaceutical products. The equipment capability includes, among other elements, the resolution, which means the smallest change in a quantity being measured that causes a perceptible change in the corresponding indication. Control charts have been extensively used for statistical process control and for its proper operation, measurement equipment of the adequate resolution is needed. Based on a case of the pharmaceutical industry and simulation tools, this paper studies the proper resolution of measurement devices for use in control charts.

  10. Documentation of guideline adherence in antenatal records across maternal weight categories: a chart review.

    Science.gov (United States)

    McDonald, Sarah D; Machold, Clea A; Marshall, Laura; Kingston, Dawn

    2014-06-13

    Documentation in medical records fulfills key functions, including management of care, communication, quality assurance and record keeping. We sought to describe: 1) rates of standard prenatal care as documented in medical charts, and given the higher risks with excess weight, whether this documentation varied among normal weight, overweight and obese women; and 2) adherence to obesity guidelines for obese women as documented in the chart. We conducted a chart review of 300 consecutive charts of women who delivered a live singleton at an academic tertiary centre from January to March 2012, computing Analysis of Variance and Chi Square tests. The proportion of completed fields on the mandatory antenatal forms varied from 100% (maternal age) to 52.7% (pre-pregnancy body mass index). Generally, documentation of care was similar across all weight categories for maternal and prenatal genetic screening tests, ranging from 54.0% (documentation of gonorrhea/chlamydia tests) to 85.0% (documentation of anatomy scan). Documentation of education topics varied widely, from fetal movement in almost all charts across all weight categories but discussion of preterm labour in only 20.6%, 12.7% and 13.4% of normal weight, overweight and obese women's charts (p = 0.224). Across all weight categories, documentation of discussion of exercise, breastfeeding and pain management occurred in less than a fifth of charts. Despite a predominance of excess weight in our region, as well as increasing perinatal risks with increasing maternal weight, weight-related issues and other elements of prenatal care were suboptimally documented across all maternal weight categories, despite an obesity guideline.

  11. Profiling cancer

    DEFF Research Database (Denmark)

    Ciro, Marco; Bracken, Adrian P; Helin, Kristian

    2003-01-01

    In the past couple of years, several very exciting studies have demonstrated the enormous power of gene-expression profiling for cancer classification and prediction of patient survival. In addition to promising a more accurate classification of cancer and therefore better treatment of patients......, gene-expression profiling can result in the identification of novel potential targets for cancer therapy and a better understanding of the molecular mechanisms leading to cancer....

  12. Science versus the stars: a double-blind test of the validity of the NEO Five-Factor Inventory and computer-generated astrological natal charts.

    Science.gov (United States)

    Wyman, Alyssa Jayne; Vyse, Stuart

    2008-07-01

    The authors asked 52 college students (38 women, 14 men, M age = 19.3 years, SD = 1.3 years) to identify their personality summaries by using a computer-generated astrological natal chart when presented with 1 true summary and 1 bogus one. Similarly, the authors asked participants to identify their true personality profile from real and bogus summaries that the authors derived from the NEO Five-Factor Inventory (NEO-FFI; P. T. Costa Jr. & R. R. McCrae, 1985). Participants identified their real NEO-FFI profiles at a greater-than-chance level but were unable to identify their real astrological summaries. The authors observed a P. T. Barnum effect in the accuracy ratings of both psychological and astrological measures but did not find differences between the odd-numbered (i.e., favorable) signs and the even-numbered (i.e., unfavorable) signs.

  13. Controlling methicillin-resistant Staphylococcus aureus: a feedback approach using annotated statistical process control charts.

    Science.gov (United States)

    Curran, Evonne T; Benneyan, James C; Hood, John

    2002-01-01

    To investigate the benefit of a hospitalwide feedback program regarding methicillin-resistant Staphylococcus aureus (MRSA), using annotated statistical process control charts. Retrospective and prospective analysis of MRSA rates using statistical process control charts. Twenty-four medical, medical specialty, surgical, intensive care, and cardiothoracic care wards and units at four Glasgow Royal Infirmary hospitals. Annotated control charts were applied to prospective and historical monthly data on MRSA cases from each ward and unit during a 46-month period from January 1997 through September 2000. Results were fed back from December 1999 and then on a regular monthly basis to medical staff, ward managers, senior managers, and hotel services. Monthly reductions in the MRSA acquisition rate started 2 months after the introduction of the feedback program and have continued to the present time. The overall MRSA rate currently is approximately 50% lower than when the program began and has become more consistent and less variable within departments throughout Glasgow Royal Infirmary. The control charts have helped to detect rate changes and manage resources more effectively. Medical and nursing staff and managers also report that they find this the most positive form of MRSA feedback they have received. Feedback programs that provide current information to front-line staff and incorporate annotated control charts can be effective in reducing the rate of MRSA.

  14. Control chart limits based on true process capability with consideration of measurement system error

    Directory of Open Access Journals (Sweden)

    Amara Souha Ben

    2016-01-01

    Full Text Available Shewhart X̅ and R control charts and process capability indices, proven to be effective tools in statistical process control are widely used under the assumption that the measurement system is free from errors. However, measurement variability is unavoidable and may be evaluated by the measurement system discrimination ratio (DR. This paper investigates the effects of measurement system variability evaluated by DR on the process capability indices Cp and Cpm, on the expected non conforming units of product per million (ppm, on the expected mean value of the Taguchi loss function (E(Loss and on the Shewhart charts properties. It is shown that when measurement system variability is neglected, an overestimation of ppm and underestimation of E(Loss are induced. Moreover, significant effects of the measurement variability on the control chart properties were made in evidence. Therefore, control charts limits calculation methods based on process real state were developed. An example is provided in order to compare the proposed limits with those traditionally calculated for Shewhart X̅, R charts.

  15. Weight charts of infants dying of sudden infant death in England.

    Science.gov (United States)

    Scheimberg, Irene; Ashal, Husna; Kotiloglu-Karaa, Esin; French, Paul; Kay, Philippa; Cohen, Marta C

    2014-01-01

    The organ weights in cases of sudden infant death syndrome (SIDS) and undetermined deaths in previously healthy infants do not correspond to "the normal range" of organ weights in international standard charts for infants currently in use in some institutions. The aim of our study was to ascertain the organ weights of infants dying suddenly and unexpectedly in England and for whom a cause of death was not found, therefore falling under the category of SIDS or undetermined. We collated the organs weights from 2 institutions covering between them the South East and North of England including London, Yorkshire, and Derbyshire. The cases from The Royal London Hospital were autopsied between 1997 and 2013, and the cases from Sheffield Children's Hospital were autopsied between 2006 and 2013. There were 188 babies who had been born at term (62 female and 126 male) and 26 ex-premature babies (15 female and 11 male). Organs of male babies were slightly heavier than those of female babies but as there was no significant differences male and female babies were considered together. Comparison with standard charts (from 1932 and 1962) and with more recent charts confirmed the discrepancy between the older charts commonly in use with more recent measurements, including ours. The main reason for these differences is that babies in the recent charts were previously healthy babies with no long term disease and improved in the health of the population.

  16. Interpretation of World Health Organization growth charts for assessing infant malnutrition: a randomised controlled trial.

    Science.gov (United States)

    Ahmad, Umar N; Yiwombe, Mwawi; Chisepo, Patrick; Cole, Tim J; Heikens, Geert T; Kerac, Marko

    2014-01-01

    The study aims to assess the effects of switching from National Center for Health Statistics (NCHS) growth references to World Health Organization (WHO) growth standards on health-care workers' decisions about malnutrition in infants aged health-care workers (doctors, clinical officers, health service assistants) in Southern Malawi. Participants were offered hypothetical clinical scenarios with the same infant plotted on NCHS-based weight-for-age charts and again on WHO-based charts. Additional scenarios compared growth charts with a single final weight against charts with the same final weight plus a preceding growth trend. Reported (i) level of concern, (ii) referral suggestions and (iii) feeding advice were elicited with a questionnaire. Even after adjusting for health-care worker type and experience, using WHO rather than NCHS charts increased: (i) concern: aOR 4.4 (95% CI 2.4-8.1); (ii) odds of referral: aOR 5.1 (95% CI 2.4-10.8); and (iii) odds of feeding advice which would interrupt exclusive breastfeeding (aOR 2.4, 95% CI 1.2-4.9). A preceding steady growth trend line did not affect concern, referral or feeding advice. Health-care workers take insufficient account of linear growth trend, clinical and feeding status when interpreting a low weight-for-age plot. Because more infants Health © 2013 Paediatrics and Child Health Division (Royal Australasian College of Physicians).

  17. Quality control chart method for analyzing PEF variability in occupational asthma.

    Science.gov (United States)

    Hayati, Fazel; Maghsoodloo, Seed; DeVivo, Michael J; Thomas, Robert E; Lemiere, Catherine

    2008-03-01

    Asthma is the most common occupational respiratory disorder in the industrialized world. In this research we investigated the effectiveness of quality control chart as a method to explore the work-relatedness of asthma using peak expiratory flow (PEF) as the variable of interest. PEF measurements were recorded from several workers suspected of having occupational asthma. The measurements were recorded for a period of 2 weeks at work and two away from work. For each subject, average [symbol: see text] quality control chart was developed and analyzed using Shewhart methods. Using the ratio of average daily PEF diurnal variation at work to the baseline average diurnal variation, quality control chart detected and characterized increased variation in PEF between the periods at workplace and away from workplace. This ratio was evaluated at 15% and 20% and compared to the results of the gold standard. A ratio of greater than 15% produced a sensitivity of 94% and specificity of 61%. These results are as good as and in some cases better than the previously published work. Quality control chart is an effective and inexpensive method for early intervention to detect workers suspected for occupational asthma. Also, the findings in this article are an invitation for further research in occupational asthma using quality control chart methods for other indices of airways obstruction (FEV-1, RAW) or inflammation (NO).

  18. Monitoring the evolutionary process of quality: risk-adjusted charting to track outcomes in intensive care.

    Science.gov (United States)

    Cook, David A; Steiner, Stefan H; Cook, Richard J; Farewell, Vern T; Morton, Anthony P

    2003-06-01

    To present graphical procedures for prospectively monitoring outcomes in the intensive care unit. Observational study: risk-adjusted control chart analysis of a case series. Tertiary referral adult intensive care unit: Princess Alexandra Hospital, Brisbane, Australia. A total of 3398 intensive care unit admissions from January 1, 1995, to January 1, 1998. Risk-adjusted process control charting procedures for continuous monitoring of intensive care unit outcomes are proposed as quality management tools. A modified Shewhart p chart and cumulative sum process control chart, using the Acute Physiology and Chronic Health Evaluation III model mortality prediction for risk adjustment, are presented. The risk-adjusted p chart summarizes performance at arbitrary intervals and plots observed against predicted mortality rate to detect large changes in risk-adjusted mortality. The risk-adjusted cumulative sum procedure is a likelihood-based scoring method that adjusts for estimated risk of death, accumulating evidence from outcomes of all previous patients. It formally tests the hypothesis of a change in the odds of death. In this application, we detected a decrease from above to predicted risk-adjusted mortality. This was temporally related to increased senior staffing levels and enhanced ongoing multidisciplinary review of practice, quality improvement, and educational activities. Formulas and analyses are provided as appendices.

  19. Percentiles of the run-length distribution of the Exponentially Weighted Moving Average (EWMA) median chart

    Science.gov (United States)

    Tan, K. L.; Chong, Z. L.; Khoo, M. B. C.; Teoh, W. L.; Teh, S. Y.

    2017-09-01

    Quality control is crucial in a wide variety of fields, as it can help to satisfy customers’ needs and requirements by enhancing and improving the products and services to a superior quality level. The EWMA median chart was proposed as a useful alternative to the EWMA \\bar{X} chart because the median-type chart is robust against contamination, outliers or small deviation from the normality assumption compared to the traditional \\bar{X}-type chart. To provide a complete understanding of the run-length distribution, the percentiles of the run-length distribution should be investigated rather than depending solely on the average run length (ARL) performance measure. This is because interpretation depending on the ARL alone can be misleading, as the process mean shifts change according to the skewness and shape of the run-length distribution, varying from almost symmetric when the magnitude of the mean shift is large, to highly right-skewed when the process is in-control (IC) or slightly out-of-control (OOC). Before computing the percentiles of the run-length distribution, optimal parameters of the EWMA median chart will be obtained by minimizing the OOC ARL, while retaining the IC ARL at a desired value.

  20. Age-related iso-MAC charts for isoflurane, sevoflurane and desflurane in man.

    Science.gov (United States)

    Nickalls, R W D; Mapleson, W W

    2003-08-01

    The motivation for this study was the current difficulty in estimating the total age-related MAC for a patient in a clinical setting. Age-related iso-MAC charts for isoflurane, sevoflurane and desflurane were developed for the clinically useful MAC range (0.6-1.6), age range 5-95 yr, and put in a convenient form for use by practising anaesthetists. The charts are based on Mapleson's meta-analysis (1996) of the available MAC data and can be used to allow for the contribution of nitrous oxide to the total MAC. The charts indicate the influence of age on anaesthetic requirements, showing, for example, that a total MAC of 1.2 using isoflurane and nitrous oxide 67% in oxygen requires an end-expired isoflurane concentration of only 0.25% in a patient of 95 yr vs 1% in a 5-yr-old patient. Colleagues found the charts to be helpful and simple to use clinically. The iso-MAC charts show clearly how patient age can be used to guide the choice of end-expired agent concentration. They also allow a consistent total MAC to be maintained when changing the inspired nitrous oxide concentration, thereby reducing the chance of inadvertent awareness, particularly at the extremes of age.

  1. The agreement chart as an alternative to the receiver-operating characteristic curve for diagnostic tests.

    Science.gov (United States)

    Bangdiwala, Shrikant I; Haedo, Ana S; Natal, Marcela L; Villaveces, Andrés

    2008-09-01

    For diagnostic tests, the most common graphical representation of the information is the receiver-operating characteristic (ROC) curve. The "agreement chart" displays the information of two observers independently classifying the same n items into the same k categories, and can be used if one considers one of the "observers" as the diagnostic test and the other as the known outcome. This study compares the two charts and their ability to visually portray the various relevant summary statistics that assess how good a diagnostic test may be, such as sensitivity, specificity, predictive values, and likelihood ratios. The geometric relationships displayed in the charts are first described. The relationship between the two graphical representations and various summary statistics is illustrated using data from three common epidemiologically relevant health issues: coronary heart disease, screening for breast cancer, and screening for tuberculosis. Whereas the ROC curve incorporates information on sensitivity and specificity, the agreement chart includes information on the positive and negative predictive values of the diagnostic test. The agreement chart should be considered as an alternative visual representation to the ROC for diagnostic tests.

  2. Chinese fetal biometry: reference equations and comparison with charts from other populations.

    Science.gov (United States)

    Zhang, Yixiu; Meng, Hua; Jiang, Yuxin; Xu, Zhonghui; Ouyang, Yunshu; Li, Shengli; Chen, Qian; Wu, Qingqing; Li, Rui; Ru, Tong; Cai, Aailu; Chen, Xinlin; Yang, Taizhu; Chen, Ping; Xie, Hongning; Lu, Hong; Dai, Qing; Dong, Fen; Yang, Meng; Yang, Xiao; Lu, Jia; Tian, Jiawei; Sun, Kun; Li, Hui

    2017-12-07

    This study aimed to construct new reference charts and equations for fetal biometry from Chinese fetuses at 15-40 weeks and to compare them with previous references. This was a prospective, cross-sectional study of singleton pregnancies in patients with a confirmed gestational age who underwent ultrasound examinations between the 15th and 40th weeks of gestation. Each woman was selected only once for this study. Biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) were recorded. For each measurement, separate regression models were fitted to estimate the mean and standard deviation at each menstrual age. Z-scores were calculated with our reference equations for comparison with other references. New charts and reference equations involving 7553 Chinese women were created for BPD, HC, AC, and FL. Reference equations were cubic models. Prediction intervals for the new reference charts were similar to those of previous references, but with some slight differences. The main difference in our fetal biometric measurements compared with those of Korea and Hong Kong was the FL. We report new Chinese reference charts and equations for fetal biometry. These reference charts and equations are available for clinical use in obstetric ultrasound studies for the Chinese population.

  3. The Fuzzy u-Chart for Sustainable Manufacturing in the Vietnam Textile Dyeing Industry

    Directory of Open Access Journals (Sweden)

    Kim-Phung Truong

    2017-07-01

    Full Text Available The inevitability of measurement errors and/or humans of subjectivity in data collection processes make accumulated data imprecise, and are thus called fuzzy data. To adapt to this fuzzy domain in a manufacturing process, a traditional u control chart for monitoring the average number of nonconformities per unit is required to extend. In this paper, we first generalize the u chart, named fuzzy u-chart, whose control limits are built on the basis of resolution identity, which is a well-known fuzzy set theory. Then, an approach to fuzzy-logic reasoning, incorporating the decision-maker’s varying levels of optimism towards the online process, is proposed to categorize the manufacturing conditions. In addition, we further develop a condition-based classification mechanism, where the process conditions can be discriminated into intermittent states between in-control and out-of-control. As anomalous conditions are monitored to some extent, this condition-based classification mechanism can provide the critical information to deliberate the cost of process intervention with respect to the gain of quality improvement. Finally, the proposed fuzzy u-chart is implemented in the Vietnam textile dyeing industry to replace its conventional u-chart. The results demonstrate that the industry can effectively evade unnecessary adjustments to its current processes; thus, the industry can substantially reduce its operational cost and potential loss.

  4. Correlation between skin color evaluation by skin color scale chart and narrowband reflectance spectrophotometer.

    Science.gov (United States)

    Treesirichod, Arucha; Chansakulporn, Somboon; Wattanapan, Pattra

    2014-07-01

    Various methods are available for the evaluation of skin color. A skin color scale chart is a convenient and inexpensive tool. However, the correlation between a skin color scale chart and objective measurement has not been evaluated. To assess the correlation between skin color evaluation done by a skin color scale chart (Felix von Luschan skin color chart) and a narrowband reflectance spectrophotometer (Mexameter MX18). The participants were evaluated for skin color by using the Felix von Luschan skin color chart (range 1-36) and a narrowband reflectance spectrophotometer (Mexameter MX18) in which the results of the measurements were expressed as Erythema (E) and Melanin (M) indices. Skin color was measured on four different anatomical skin sites from each participant on the medial aspect of the volar and the dorsal regions of both forearms. A total of 208 records from 52 participants were established. The majority of participants (19.2%) were rated with the skin color scale at the number 16 (range 14-33). The mean M plus E, M, and E indices were 498.9 ± 143.9, 230.4 ± 74.4, and 268.5 ± 73.2, respectively. The correlation coefficient between the number on the skin color scale and each index: M plus E, M, and E indices were 0.90, 0.90, and 0.86, respectively, with a statistical significance of P spectrophotometer.

  5. Disease-specific Growth Charts of Marfan Syndrome Patients in Korea.

    Science.gov (United States)

    Kwun, Younghee; Kim, Su Jin; Lee, Jieun; Isojima, Tsuyoshi; Choi, Doo-Seok; Kim, Duk-Kyung; Huh, June; Kang, I-Seok; Chang, MiSun; Cho, Sung Yoon; Sohn, Young Bae; Park, Sung Won; Jin, Dong-Kyu

    2015-07-01

    Patients with Marfan syndrome (MFS) presents with primary skeletal manifestations such as tall stature, chest wall abnormality, and scoliosis. These primary skeletal manifestations affect the growth pattern in MFS. Therefore, it is not appropriate to use normal growth charts to evaluate the growth status of MFS. We aimed to develop disease-specific growth charts for Korean MFS patients and to use these growth charts for understanding the growth patterns in MFS and managing of patients with MFS. Anthropometric data were available from 187 males and 152 females with MFS through a retrospective review of medical records. Disease-specific growth charts were generated and 3, 25, 50, 75, and 97 percentiles were calculated using the LMS (refers to λ, μ, and σ, respectively) smoothing procedure for height and weight. Comparisons between MFS patients and the general population were performed using a one-sample t-test. With regard to the height, the 50th percentile of MFS is above the normative 97th percentile in both genders. With regard to the weight, the 50 percentile of MFS is above the normative 75th percentile in male and between the normative 50th percentile and the 75th percentile in female. The disease-specific growth charts for Korean patients with MFS can be useful for monitoring growth patterns, planning the timing of growth-reductive therapy, predicting adult height and recording responses to growth-reductive therapy.

  6. Rapid infusion of esketamine for unipolar and bipolar depression: a retrospective chart review

    Directory of Open Access Journals (Sweden)

    Correia-Melo FS

    2017-06-01

    Full Text Available Fernanda S Correia-Melo,1 Felipe C Argolo,1 Lucas Araújo-de-Freitas,1,2 Gustavo Carneiro Leal,1 Flávio Kapczinski,3 Acioly Luiz Lacerda,4 Lucas C Quarantini1,2 1Psychiatry Service, University Hospital, Federal University of Bahia, Salvador, Brazil; 2Postgraduate Program in Medicine and Health, Federal University of Bahia, Salvador, Brazil; 3Department of Psychiatry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; 4Department of Psychiatry, Federal University of São Paulo, São Paulo, Brazil Background: This study evaluated efficacy and safety of intravenous subanesthetic doses of esketamine using an administration time of 10 minutes in patients with treatment-resistant depression and bipolar depression.Methods: A retrospective chart review was conducted to identify patients who met the inclusion criteria for treatment-resistant depression and bipolar depression according to Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision criteria, and these patients received rapid infusion of esketamine between June 2012 and December 2015. The Montgomery–Åsberg Depression Rating Scale (MADRS was administered to measure and score depressive symptom severity before infusion and at 24 hours, 72 hours, and 7 days after infusion. In addition, Clinical Global Impression scale was administered before and 7 days after esketamine infusion.Results: Esketamine was administered to 30 patients. A total of 27 patients met the inclusion criteria and had MADRS evaluation data, which showed that 23 had unipolar and 4 had bipolar depression. Thirteen patients (48.1% showed therapeutic response (MADRS reduction ≥50% within 1 week (7 days of intervention. Remission (MADRS <7 was observed in 10 patients (37.0% in the same period. Therapeutic response and remission frequencies were seen in 16 (59.3% and 11 (40.7% patients, respectively, within 24 hours following drug infusion. The most relevant side effect observed during

  7. Comparison of LogMAR Eye charts with angular vision for visually impaired: the Berkeley rudimentary vision test vs LogMAR One target Landolt ring Eye chart.

    Science.gov (United States)

    Miwa, Marie; Iwanami, Masaki; Oba, Mari S; Mizuki, Nobuhisa; Nishida, Tomomi

    2013-12-01

    It is not common to quantify visual acuity worse than 2.0 logarithm of the minimal angle resolution (logMAR) (commensurate with decimal visual acuity 0.01) at ophthalmology clinics. Recently, the Berkeley rudimentary vision test (BRVT) was developed as a simple measurement tool of logMAR with angular vision for quantifying poor levels of visual acuity. We compared the difference between BRVT and conventional Landolt ring logMAR chart with angular vision measured by the logMAR one target Landolt ring eye chart (LogMAR LEC). We reviewed 110 patients with best-corrected visual acuity (BCVA) in the better eye from light perception (LP) to 0.8 logMAR measured by LogMAR LEC. The reproducibility of the log MAR LEC and BRVT was evaluated on 39 eyes from 20 patients, and 33 eyes from 20 patients respectively. The comparison of logMAR between BRVT and logMAR LEC was evaluated by surveying 61 eyes from 70 patients. In addition, regardless of their BCVA, the eyes from patients with worse than 2.0 logMAR by LogMAR LEC were re-evaluated by BRVT. The logMAR of patients examined by BRVT or logMAR LEC did not show any significant difference between the first and second examinations, and there was a strong correlation between the examinations in both eye charts. The BRVT significantly produced better logMAR compared with logMAR LEC, and the strong correlation was shown between both eye charts. Although 35 eyes from 28 patients among 110 patients could not be quantified by logMAR LEC, 18 eyes of 35 eyes could be quantified logMAR by BRVT. The BRVT and logMAR LEC are reliable visual acuity measurement tools. Moreover, the BRVT is potentially effective in quantifying visual acuity of the more severe visually impaired patients.

  8. Poor predictive ability of the risk chart SCORE in a Danish population

    DEFF Research Database (Denmark)

    Saidj, Madina; Jørgensen, Torben; Prescott, Eva

    2013-01-01

    In Denmark, the European risk chart Systematic COronary Risk Evaluation (SCORE) from the European Society of Cardiology is recommended for use in cardiovascular prevention. Nevertheless, its predictive ability in a Danish population has never been investigated. The purpose of this study was there......In Denmark, the European risk chart Systematic COronary Risk Evaluation (SCORE) from the European Society of Cardiology is recommended for use in cardiovascular prevention. Nevertheless, its predictive ability in a Danish population has never been investigated. The purpose of this study...... was therefore to assess the predictive ability of the SCORE risk chart with regard to fatal cardiovascular risk according to the socio-demographic factors of age, sex, income and education in a Danish population....

  9. Improved implementation of the risk-adjusted Bernoulli CUSUM chart to monitor surgical outcome quality.

    Science.gov (United States)

    Keefe, Matthew J; Loda, Justin B; Elhabashy, Ahmad E; Woodall, William H

    2017-06-01

    The traditional implementation of the risk-adjusted Bernoulli cumulative sum (CUSUM) chart for monitoring surgical outcome quality requires waiting a pre-specified period of time after surgery before incorporating patient outcome information. We propose a simple but powerful implementation of the risk-adjusted Bernoulli CUSUM chart that incorporates outcome information as soon as it is available, rather than waiting a pre-specified period of time after surgery. A simulation study is presented that compares the performance of the traditional implementation of the risk-adjusted Bernoulli CUSUM chart to our improved implementation. We show that incorporating patient outcome information as soon as it is available leads to quicker detection of process deterioration. Deterioration of surgical performance could be detected much sooner using our proposed implementation, which could lead to the earlier identification of problems.

  10. Owner misperception of canine body condition persists despite use of a body condition score chart.

    Science.gov (United States)

    Eastland-Jones, Rebekah C; German, Alexander J; Holden, Shelley L; Biourge, Vincent; Pickavance, Lucy C

    2014-01-01

    Canine obesity is a prevalent disease, but many owners are unaware of it, partly due to misperception of their dog's body shape. Body condition scoring (BCS) is a simple method of assessing body composition, but whether it can reduce owner misperception is unclear. Our aim was to determine the effect of a BCS system on owners' ability to estimate the body condition of their dog. Information from 110 dog owners attending three UK veterinary practices was gathered, by interview, between March and April 2013. First, owners were asked to determine their dog's body condition without guidance, and then reassess it using a five-point BCS chart. Most owners (85/110, 77 %) believed the chart to have improved their ability to estimate the condition of their dog correctly. However, only a weak agreement existed between owner estimates and those of the primary investigator, both with (kappa (κ) = 0·28; P chart. Furthermore, most owners incorrectly estimated their dog's body condition, both with (71/110; 64 %) and without (72/110; 65 %) the chart (P = 1·00), with underestimation being most common (with = 63/71, 89 %; without = 66/72, 92 %; P = 0·57). Owners of overweight dogs more commonly misperceived their dog's body condition, both with (BCS 1-3: 5/35, 14 %; BCS 4-5: 64/75, 85 %; P chart. Thus, use of a five-point BCS chart does not improve accuracy of owners' perception of their dog's body shape, despite the accompanying perception that it does.

  11. Use of color charts for the diagnosis of finger whiteness in vibration-exposed workers.

    Science.gov (United States)

    Negro, Corrado; Rui, Francesca; D'Agostin, Flavia; Bovenzi, Massimo

    2008-04-01

    To assess the usefulness of color charts for the diagnosis of finger whiteness in vibration-exposed workers. A group of 146 forestry and stone workers exposed to hand-transmitted vibration (HTV) were examined twice over 1 year follow up period. The anamnestic diagnosis of finger whiteness was made on the basis of (a) a medical history alone, and (b) the administration color charts which showed changes in the skin color of fingers and hands. The cold response of digital arteries was assessed by measuring the change in finger systolic blood pressure (FSBP) after local cooling from 30 to 10 degrees C (FSBP%(10 degrees )). Assuming the administration of color charts as the gold standard, the sensitivity and specificity of the medical history alone to diagnose finger whiteness was 88.2 and 93.8%, respectively, at the initial cross-sectional study and 94.4 and 97.7% at the end of the follow-up. Random-intercept linear regression analysis of follow up data showed that after adjustment for several covariates, FSBP%(10 degrees )was significantly associated with finger whiteness assessed by either medical history alone (P cold response of digital arteries. The administration of color charts seems to reduce the proportion of false positive responses for finger whiteness in a population of vibration-exposed workers. The color chart method was a more significant predictor of digital arterial hyperresponsiveness to cold than medical history alone. These findings suggest that the use of color charts in clinical and epidemiological studies may be of help to assist in the diagnosis of finger whiteness in vibration-exposed workers.

  12. Enhanced accuracy and reproducibility in reporting of lung scintigrams by a segmental reference chart.

    Science.gov (United States)

    Magnussen, J S; Chicco, P; Palmer, A W; Mackey, D W; Magee, M; Murray, I P; Bautovich, G; Allman, K; Storey, G; Van der Wall, H

    1998-06-01

    The diagnostic probability of pulmonary embolic disease is based on the recognition of unmatched segmental perfusion defects. Although interobserver and intraobserver reproducibility have been studied, accuracy has been an elusive goal due to the lack of a gold standard. We investigated the accuracy and reproducibility of reporting in a virtual scintigraphic model of the lungs, with and without the use of a lung segmental reference chart. A Monte Carlo package was used to model lung scintigraphy from a digital phantom of the human lungs. An ideal lung segmental reference chart was created from the phantom. Five experienced nuclear medicine physicians reported a set of all possible defects involving 100% of a segment, without and with the chart. A further set of defects involving 45%-55% of a segment in the lower lobes was investigated using the chart. There was a significant improvement in accuracy (from 48% to 72%) and intraobserver agreement (from 61% to 77%) with the chart. The accuracy of reporting defects in the upper and middle lobes was consistently better than that in the lower lobes. There was no significant difference between the accuracy of reporting large defects and that of reporting moderate defects in the lower lobes. The lung segmental reference chart significantly improves both the accuracy and reproducibility of reporting lung scintigrams; however, although reporting in the lung bases is improved, absolute accuracy is substantially less than that in the upper and middle lobes. This emphasizes the need for caution because the lung bases are the most common site of embolic disease.

  13. Statistical Design of an Adaptive Synthetic X- Control Chart with Run Rule on Service and Management Operation

    Directory of Open Access Journals (Sweden)

    Shucheng Yu

    2016-01-01

    Full Text Available An improved synthetic X- control chart based on hybrid adaptive scheme and run rule scheme is introduced to enhance the statistical performance of traditional synthetic X- control chart on service and management operation. The proposed scientific hybrid adaptive schemes consider both variable sampling interval and variable sample size scheme. The properties of the proposed chart are obtained using Markov chain approach. An extensive set of numerical results is presented to test the effectiveness of the proposed model in detecting small and moderate shifts in the process mean. The results show that the proposed chart is quicker than the standard synthetic X- chart and CUSUM chart in detecting small and moderate shifts in the process of service and management operation.

  14. Excel Data Analysis your visual blueprint for creating and analyzing data, charts and PivotTables

    CERN Document Server

    Etheridge, Denise

    2010-01-01

    Advanced techniques for Excel power users. Crunch and analyze Excel data the way the professionals do with this clean, uncluttered, visual guide to advanced Excel techniques. Using numerous screenshots and easy-to-follow numbered steps, this book clearly shows you how to perform professional-level modeling, charting, data access, data slicing, and other functions. You'll find super techniques for getting the most out of Excel's statistical and financial functions, Excel PivotTables and PivotCharts, Excel Solver and BackSolver, and more.: Provides a clear look at power-using Excel, the world's

  15. F-Chart handbook. Active solar system sizing and economic analysis program

    Science.gov (United States)

    Mielke, G. W.

    1981-04-01

    The program is applicable to active solar space and service water heating systems that incorporate typical flat-plate solar collectors. The program is based on the F-Chart method of estimating annual system thermal performance. This program uses a standard life-cycle cost analysis methodology to calculate optimum solar system size and present economic performance data. The F-Chart program is designed to be used by anyone interested in, or involved with, solar heating systems. This handbook describes both information input requirements and the resultant thermal and economic analyses.

  16. Using Statistical Process Control to Drive Improvement in Neonatal Care: A Practical Introduction to Control Charts.

    Science.gov (United States)

    Gupta, Munish; Kaplan, Heather C

    2017-09-01

    Quality improvement (QI) is based on measuring performance over time, and variation in data measured over time must be understood to guide change and make optimal improvements. Common cause variation is natural variation owing to factors inherent to any process; special cause variation is unnatural variation owing to external factors. Statistical process control methods, and particularly control charts, are robust tools for understanding data over time and identifying common and special cause variation. This review provides a practical introduction to the use of control charts in health care QI, with a focus on neonatology. Copyright © 2017 Elsevier Inc. All rights reserved.

  17. Paradoxes of nautical charts (model) of the sky for further space travel

    OpenAIRE

    Mykola, Lytvynchuk

    2015-01-01

    The man penetrates deeper into the mysteries of matter, space and time in the evolutionary development. He has only started the practical development of near space, but he already begins to travel into its depth in his dreams. One of the attributes of long-duration space travel is navigation charts (models) of the Universe considering an exact arrangement of cosmic bodies and their gravitational fields in space. For drawing up of such charts of the starry sky from the Earth it is necessary to...

  18. The problem of the availability of nautical charts and publications on the Northern Sea Route

    Directory of Open Access Journals (Sweden)

    Pastusiak Tadeusz

    2015-03-01

    Full Text Available Statistical studies of marine accidents and unfortunate events in ice-covered areas in 1995–2004 and 2004–2011 showed a general lack of information from the area under the jurisdiction of the Russian Federation. The author’s research for the period 2004–2011 showed a large number of unfortunate events caused by lack of adequate provision of nautical charts, shortage of accurate position systems on board vessels as well as weak technical condition of these vessels. The author examined the problem of navigation safety on the Northern Sea Route in terms of availability of the official nautical charts and publications.

  19. Variation of Chart Datum Towards Maritime Delimitation due to Rising Sea Level

    Science.gov (United States)

    Faizuddin, A. R. M.; Razali, M. M.

    2017-10-01

    The importance of Chart Datum in hydrographic surveying is inarguable because its determination is part of the process to obtain the actual depth of bathymetry. The Chart Datum has a relationship with the determination of base points because any uncertainty of the base points would definitely cause uncertainty to the determination of the maritime baseline. If there is any doubt on the baselines, it will then cause doubt on the maritime zones as well which includes the equidistant line that forms the border between the two countries. However, due to the ongoing rising sea level, there has been some variations of the Chart Datum in some areas in Malaysia. This research discusses about the variation of Mean Sea Level and Chart Datum for the tide gauge stations at Geting, Cendering, Sedili and Tioman at East Coast and Kukup, Langkawi, Lumut and Penang at the West Coast of Peninsular Malaysia. The tidal analysis was carried out by using the 23 years of data beginning at 1993 to 2015. The observed tidal data for 23 years were processed and analysed by using GeoTide software. In this research, the Harmonic Analysis technique was used in order to calculate the values of Mean Sea Level and the Chart Datum while the slope of the shoreline is modelled by using Global Mapper. The linear trend of the Mean Sea Level and the Chart Datum was analysed to determine the increase of the annual sea level in millimetres accuracy and also to determine the variation of the Chart Datum for each tidal station and its impact towards maritime baseline. The result has shown that the linear trend of sea level rise varies from 24 millimetres per year up to 168 millimetres per year at the East Coast and 24 millimetres per year up to 96 millimetres per year at the West Coast of Peninsular Malaysia. As for the maritime baseline, results has indicated that there exist shifting in the horizontal which are varies from 1.564 metres per year to 3.299 metres per year at the East Coast and from 1

  20. Monitoring Actuarial Present Values of Term Life Insurance By a Statistical Process Control Chart

    Science.gov (United States)

    Hafidz Omar, M.

    2015-06-01

    Tracking performance of life insurance or similar insurance policy using standard statistical process control chart is complex because of many factors. In this work, we present the difficulty in doing so. However, with some modifications of the SPC charting framework, the difficulty can be manageable to the actuaries. So, we propose monitoring a simpler but natural actuarial quantity that is typically found in recursion formulas of reserves, profit testing, as well as present values. We shared some simulation results for the monitoring process. Additionally, some advantages of doing so is discussed.