how do we construct a good model

... the American National Standards Institute as ANSI Standard Z1.4 and in 1974 it was adopted (with minor changes) by the International Organization for Standardization as ISO Std 2859 The latest ... show how the points on this curve are obtained, once we have a sampling plan (n,c) - later we will demonstrate how a sampling plan (n,c) is obtained We assume that the lot size N is very large, as ... Romig to acceptance sampling Acceptance sampling is an important field of statistical quality control that was popularized by Dodge and Romig and originally applied by the U.S military to the...

Ngày tải lên: 21/06/2014, 22:20

... data show trend and seasonality? To handle seasonality, we have to add a third parameter In this case double smoothing will not work We now introduce a third equation to take care of seasonality ... 6.4.2 What are Moving Average or Smoothing Techniques? Average weighs all past observations equally In summary, we state that The "simple" average or mean of all past observations is only a useful ... previous example was 70 and its forecast (smoothed value S) was 71.7 Since we have the data point and the forecast available, we can calculate the next forecast using the regular formula = 1(70) +...

Ngày tải lên: 21/06/2014, 22:20

... Dioxide at Mauna Loa Observatory: II Analysis of the NOAA/GMCC Data 1974-1985", Journal of Geophysical Research (submitted) for details This dataset was received from Jim Elkins of NOAA in 1988 Data ... The data set consists of quarterly sales data The season is year and since there are quarters per year, L = Using the formula we obtain: Example of the computation of the Initial Seasonal Indices ... y5 /A2 + y9 /A3 + y13 /A4 + y17 /A5 + y21 /A6 )/6 I2 = ( y2 /A1 + y6 /A2 + y10 /A3 + y14 /A4 + y18 /A5 + y22 /A6 )/6 I3 = ( y3 /A1 + y7 /A2 + y11 /A3 + y15 /A4 + y19 /A5 + y22 /A6 )/6 I4 = ( y4 /A1 + y8 /A2 + y12 /A3 ...

Ngày tải lên: 21/06/2014, 22:20

... run sequence plot indicates that the data have a constant location and variance, which implies stationarity However, the plot does show seasonality We generate an autocorrelation plot to help determine ... order of an autoregressive model The partial autocorrelation of an AR(p) process is zero at lag p+1 and greater If the sample autocorrelation plot indicates that an AR model may be appropriate, then ... Box-Jenkins Analysis on Seasonal Data Analyzing Autocorrelation Plot for Seasonality If you observe very large autocorrelations at lags spaced n periods apart, for example at lags 12 and 24, then...

Ngày tải lên: 21/06/2014, 22:20

... vector and variancecovariance matrix for sample data matrix The results are: where the mean vector contains the arithmetic averages of the three variables and the (unbiased) variance-covariance matrix ... variances and whose off-diagonal elements are sample covariances Symmetry means that the matrix and its transpose are identical (i.e., A = A' ) An example is where s1 and s2 are sample standard deviations ... in analyzing multivariate data is computing the mean vector and the variance-covariance matrix Sample data matrix Consider the following matrix: The set of observations, measuring variables, can...

Ngày tải lên: 21/06/2014, 22:20

... information about each analysis step from the case study description Invoke Dataplot and read data Read in the data You have read columns of numbers into Dataplot, variables CASSETTE, WAFER, ... summary generates a variety of statistics In this case, we are primarily interested in the mean and standard deviation From this summary, we see that the mean is 2.53 and the standard deviation ... [5/1/2006 10:35:53 AM] 6.6.1.2 Graphical Representation of the Data Summary The above graphs show that there are differences between the lots and the sites There are various ways we can create subgroups...

Ngày tải lên: 21/06/2014, 22:20

... automate the choice of an appropriate model When available, the AIC or AICC can be a useful tool for model identification Many software programs for time series analysis will generate the AIC or AICC ... differenced data Partial Autocorrelation Plot of the Differenced Data Interpretation of the Partial Autocorrelation Plot of the Differenced Data The partial autocorrelation plot of the differenced data ... for a broad range of models At this time, Dataplot does not support this feature However, based on the plots in this section, we will examine the ARIMA(2,1,0) and ARIMA(0,1,1) models in detail...

Ngày tải lên: 21/06/2014, 22:20

... The ARMA fit generates parameter estimates for the ARIMA(2,1,0) model ARIMA(0,1,1) fit of Y The ARMA fit generates parameter estimates for the ARIMA(0,1,1) model Model validation Generate a 4-plot ... may be appropriate Partial autocorrelation plot of the differenced data of Y The partial autocorrelation plot suggests an ARIMA(2,1,0) model may be appropriate Estimate the model ARIMA(2,1,0) ... plot shows that the data show strong and positive autocorrelation Autocorrelation plot of Y The autocorrelation plot indicates significant autocorrelation and that the data are not stationary Run...

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 14/12/2013, 12:15

... D Karagiannis1 , R Ortega2 , and A Astolfi1 Department of Electrical and Electronic Engineering, Imperial College, Exhibition Road, London SW7 2AT, UK Email: d.karagiannis@imperial.ac.uk, a. astolfi@imperial.ac.uk ... solving nonlinear control problems with partial state and/or parameter information References A Astolfi and R Ortega (2003) Immersion and invariance: a new tool for stabilization and adaptive control ... While the example above makes clear that the analysis and design problems are far from trivial, in the forecoming section we present an example which illustrates the advantages of a cascades point...

Ngày tải lên: 01/01/2014, 18:39

... Kwakernaak · J.N Tsitsiklis Authors Masatoshi Nakamura Department of Advanced Systems Control Engineering Saga University Japan Satoru Goto Department of Advanced Systems Control Engineering Saga ... saturation as in the above illustration, the reason of actual phenomena can be definitely judged For avoiding torque saturation naturally, the actuator capable of exporting torque with big capacity ... and the efforts are in making the essence of a problem to the formula appropriately The keys to solution of many formulas are the easily adopted basis of classical control (Laplace transformation)...

Ngày tải lên: 13/02/2014, 08:20

... SPase typical for Gram-positive bacteria or for Gram-negative bacteria (such as LepB) has been identified in M pneumoniae, although a SPase I activity has been shown to be essential for cell viability ... kDa As the molecular mass of P40 in protein extracts, measured by SDS ⁄ PAGE is about 36 kDa, there is an obvious difference in molecular mass of about kDa between the calculated and the actually ... concentration of the mL supernatant was about 25 mgÆmL)1 as measured with the Quick Start Bradford Protein Assay (BioRad, Hercules, CA, USA) using bovine serum albumin as standard It contained almost...

Ngày tải lên: 19/02/2014, 18:20

... additional tasks and their analytical representations Simulation results for a 3DOF planar manipulator are given 2.2 Kinematic Analysis of Redundant Manipulators Definition: A manipulator is said ... JLA, SOCA, MOCA is evaluated by simulation on a 3-DOF planar arm In addition to the kinematic additional tasks described in Chapter 3, the scheme is capable of incorporating dynamic additional ... monograph was carried out as part of a Strategic Technologies in Automation and Robotics (STEAR) project on Trajectory Planning and Obstacle Avoidance (TPOA) funded by the Canadian Space Agency...

Ngày tải lên: 05/03/2014, 15:20

... clearly identify those variables that are available and that have an influence on the behavior of the system and more particularly, on its outputs These variables are referred to as inputs and may ... matrices is particularly useful in robot control: xTAx = 0, for all x ∈ IRn A square matrix A = {aij } ∈ IRn×n is diagonal if aij = for all i = j We denote a diagonal matrix by diag {a1 1 , a2 2 ... the matrix A is positive definite and shall not be read as A is greater than 0” which makes no mathematical sense 24 Mathematical Preliminaries A square not necessarily symmetric matrix A ∈ IRn×n...

Ngày tải lên: 05/03/2014, 15:20

... channels, and in particular with data obtained with b-PTH showing the formation of cationselective ion channels in artificial lipid bilayer membranes and in the plasmalemma of rat hippocampal ... [32,33] Patch-clamp data were analyzed off-line with TAC software (Bruxton Corporation, Seattle, WA, USA) and Pulse Fit (Heka Elektronic) software All measurements were made at  25 °C, and the ... Electrical signals after amplification were collected and digitized, at a sampling rate of 25 kHz, with the aid of a computer equipped with an analogue-to-digital interface board (DT 2821; Data Translation,...

Ngày tải lên: 07/03/2014, 12:20

... France boissonn©sophia, inria, fr A De Luca Dipartimento di Informatica e Sistemistica UniversitA di Roma "La Sapienza" Via Eudossiana 18 00184 Roma Italy adeluca©giannutri, caspur, it F Jean ... free space from the initial configuration along admissible paths by spreading landmarks, each being as far as possible from one another In parallel, a local path planner checks if the target may ... Cedex France jpl©laas, fr G Oriolo Dipartimento di Informatica e Sistemistica Universit£ di Roma "La Sapienza" Via Eudossiana 18 00184 Roma Italy oriolo@giannutri, caspur, it X M H Overmars Department...

Ngày tải lên: 22/03/2014, 11:20

... interplay between viral and cellular SR proteins certainly has a substantial effect on post- Table Functional interplay between viral proteins and cellular SR proteins as well as SR kinases ⁄ ... surface plasmon resonance J Virol 79, 1164–1179 Calvo E, Escors D, Lopez JA, Gonzalez JM, Alvarez A, Arza E & Enjuanes L (2005) Phosphorylation and subcellular localization of transmissible gastroenteritis ... SR protein kinases and RNA-splicing machinery during viral replication Proc Natl Acad Sci USA 103, 11329– 11333 Dowling D, Nasr-Esfahani S, Tan CH, O’Brien K, Howard JL, Jans DA, Purcell DF,...

Ngày tải lên: 23/03/2014, 06:20

... eliminate disturbance variables Yh range of the The manipulated variable y can be determined by the controller within Yh, manipulated variable the range of the manipulated variable : SAMSON AG ⋅ ... Technical Information Part 1: Fundamentals Part 2: Self-operated Regulators Part 3: Control Valves Part 4: Communication Part 5: Building Automation Part 6: Process Automation Should you have any ... DKE The equation above shows that the system deviation yields the same result as Part ⋅ L101 EN y (IEC chief symbol: m) manipulated variable The manipulated variable is the output variable of the...

Ngày tải lên: 29/03/2014, 21:55

... frequency-domain analysis of analog and digital control systems Visual ModelQ is an enhancement of the original ModelQ in that Visual ModelQ allows readers to view and build models graphically More than ... thermal mass, capacitance, inductance, and many other physical parameters The inverse Live Constant is a space-saving alternative to combining a standard Live Constant and a 1/x block 1/K indicates ... for every model Waveform Generator: The waveform generator can be used to generate standard waveforms such as sine waves and triangle waves Frequency, amplitude, and phase are all adjustable while...

Ngày tải lên: 18/04/2014, 12:27

... (GERMANY) Aratú, P.(HUNGARY) Arsộnio, A (U.S .A. ) Asama, H (JAPAN) Babuska, R (THE NETHERLANDS) Balas, M (U.S .A. ) Balestrino, A (ITALY) Bandyopadhyay, B (INDIA) Bars, R (HUNGARY) Bemporad, A (ITALY) ... R (AUSTRALIA) Jezernik, K (SLOVENIA) Jonker, B (THE NETHERLANDS) Juhas, G (GERMANY) Karcanias, N (U.K.) Karray, F (CANADA) Katayama, T (JAPAN) Katic, D (YUGOSLAVIA) Kavraki, L (U.S .A. ) Kawano, ... data outcome has to be defined As soon as a step is executed the generated data are stored in the global database That F.W Arndt assures, that the global database always contains the actual data...

Ngày tải lên: 12/06/2014, 12:04