모든 Donald Schaefer 무료 iOS 앱 및 게임 - PGYER IPAHUB

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Donald Schaefer

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Crout LU Decomposition-

In Linear Algebra, the Crout Matrix Decomposition is an LU decomposition which decomposes a matrix into a Lower Triangular Matrix (L) and an Upper Triangular Matrix (U).<br><br>The Crout LU Decomposition iPad app enables the entry of 2x2, 3x3 and 4x4 matrices, checks for matrix entry validity and ca

Burr Distribution-

In probability theory, statistics and econometrics, the Burr Distribution is a continuous probability distribution for non-negative random variables. It is one of a number of different distributions called the "generalized log-logistic distribution". It is most commonly used to model household incom

Levy Distribution-

In probability theory and statistics, the Lévy distribution, named after Paul Lévy, is a continuous probability distribution for a non-negative random variable. It is a special case of the inverse-gamma distribution.<br><br>t is one of the few distributions that are stable and that have probability

Angle Distribution`-

The Angle Distribution is a continuous probability distribution.<br><br>The Angle Distribution is generated via the data entry field input of two parameters. The two parameters are defined as:<br><br>x - Angle Parameter( x greater 0 and x less 3.14 ) corresponding to the angle made in an N-dimens

Cattle Notebook-

Cattle NoteBook enables the recording and emailing of cattle location and identification information. Cattle NoteBook is a GPS enabled IPAD app which automatically obtains latitude, longitude and accuracy information via GPS. Cattle information data fields exist for CattleID/Name, EartagID, HerdID

Cauchy Distribution Function-

The Cauchy distribution is a continuous probability distribution. Its cumulative distribution function has the shape of an arctangent function arctan(x).<br><br>The Cauchy Distribution Function Calculator utilizes data input via data entry text fields for the Percentile (x) Parameter, the Location

Cosine Distribution-

The Cosine Distribution is used as a simple and a computationally alternative to the Normal Distribution.<br><br>In probability theory the von Mises distribution is a continuous distribution that is the equivalent of the Normal distribution for data defined with directional coordinates, i.e. over th

Erlang Distribution-

The Erlang distribution is a two parameter family of continuous probability distributions.<br><br>The Erlang distribution can be used to model the time to complete n operations in series, where each operation requires an exponential period of time to complete. <br><br>The Erlang distribution is util

Graham's Scan Geometry-

Graham's scan is a method of finding the convex hull of a finite set of points in the plane with time complexity O(n log n). It is named after Ronald Graham, who published the original algorithm in 1972. The algorithm finds all vertices of the convex hull ordered along its boundary.<br><br>A conve

K-Means Clustering-

K-means clustering partitions data into k mutually exclusive clusters, and returns the index of the cluster to which it has assigned each observation.<br><br>K-means clustering is popular for cluster analysis in data mining. K-Means clustering aims to partition n observations into k clusters in whic

Least Squares Linear-

The Least Squares Linear Regression app computes the Least Squares Linear Regression equation and computed (x,y) data points.<br><br>The Data Entry Screen for the Linear Regression App has two data entry fields for the x: and y: data points <br><br>The app computes the Least Squares Linear Regressio

Lorenz ODE is an iOS app which approximates solutions to the Lorenz system. It is a system of ordinary differential equations.

Pareto Distribution-

In probability and statistics, the Pareto distribution is a skewed, heavy-tailed, continuous distribution that is sometimes used to model the distribution of incomes, financial variables and populations.<br><br>For Data Entry the Pareto Distribution app for iPad and iPhone utilizes two numeric data

Arcsine Distribution-

In probability theory the Arcsine Distribution is the probability distribution whose cumulative distribution function is 0 <= x <= 1 and whose probability density function is on (0,1). The Arcsine Distribution is a special case of the Beta Distribution with a = β = 1/2. <br><br>For Data Entry

Extreme Value Distribution-

In probability theory and statistics, the generalized extreme value (GEV) distribution is a family of continuous probability distributions developed within extreme value theory to combine the Gumbel, Fréchet and Weibull families also known as type I, II and III extreme value distributions. By the ex

Maxwell Distribution-

The Maxwell (or Maxwell-Boltzmann) distribution gives the distribution of speeds of molecules in thermal equilibrium as given by statistical mechanics. Defining<br><br>a = √ k/Tm<br><br>where k is the Boltzmann constant, T is the temperature, m is the mass of a molecule, and letting x denote the sp

Poisson Distribution Calc-

In probability theory and statistics, the Poisson distribution is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time and/or space if these events occur with a known average rate and independently of the time since the

Weibull Distribution-

In probability and statistics, the Weibull distribution is a continuous 3 factor probability distribution. <br><br>The three factors that comprise the Weibull distribution are the Shape Parameter (a), the Scale Parameter ( b) and data sets of a Random Variable (x).<br><br>The Weibull distribution

Wishart Distribution Matrix-

The Wishart Distribution is a matrix generalization of the chi-square distribution. It is a distribution for a symmetric positive definite matrix whereby the diagonal elements are each chi-square random variables.<br><br>In this Wishart Distribution Matrix iPad and iPhone app the following variable

Appalachian-Trail Notebook-

Appalachian Trail Notebook for iPhone is an Apple iPhone iOS 8 app which enables the recording and emailing of Appalachian Trail location information. Over 1500 AT Trail locations are identified and are listed by the 14 states of the AT Trail and sorted by mileage from the Springer start point.

Cholesky Decomposition-

In linear algebra, Cholesky decomposition or Cholesky factorization is a decomposition of a positive-definite symmetric matrix into the product of a lower triangular matrix and its conjugate transpose, <br><br>The Cholesky Decomposition iPad app enables the entry of 2x2, 3x3 and 4x4 matrices, check

Gaussian Probability-

The Gaussian Probability Calculator utilizing the Gaussian Probability Function returns the probability that an entered random variable (x) has a probability value less than the entered (x) value..<br><br>The random variable (x) is entered via a numeric data entry field.<br><br>In addition the Gaus

Log Gamma Function Calculator-

The Log Gamma Function returns the natural logarithm of the absolute value of the gamma function for the input parameter (x). Log Gamma Function Calculator App has versions for iPad, iPhone and Apple Watch.

Rayleigh Eigenvalue-

Rayleigh quotient iteration is an eigenvalue algorithm which extends the idea of the inverse iteration by using the Rayleigh quotient to obtain increasingly accurate eigenvalue estimates.<br><br>Rayleigh's quotient method is a variant of the inverse power method for estimating the dominant eigenvalu

Student's t Probability-

In probability and statistics, Student's t-distribution (or simply the t-distribution) is any member of a family of continuous probability distributions that arises when estimating the mean of a normally distributed population in situations where the sample size is small and population standard devi

Triangle Distribution-

The Triangular Distribution is a continuous probability distribution with a probability density function shaped like a triangle. It is defined by three values: the minimum value a, the maximum value b, and the mode value c where a < b and a ≤ c ≤ b.<br><br>The trian

Von Mises Distribution-

In probability theory the von Mises distribution is a continuous distribution that is the equivalent of the Normal distribution for data defined with directional coordinates, i.e. over the range [-π,π]. It is a close approximation to the wrapped normal distribution, which is the circular analogue o

Campaign YardSign-

Campaign YardSign enables the recording and emailing of Candidate yard sign identification information. Campaign YardSign is a GPS enabled IPAD App which automatically obtains latitude, longitude and accuracy information via GPS. Candidate yard sign information data fields exist for Candidate Name

Daily Beef, Pork By-Product-

The Daily Beef, Product By-Product App is an iPhone, iPad app which presents the USDA By-Product Price Report which is published in Des Moines IA.<br><br>Data elements for the report are a Low-High Price Range, a Weighted Average and LDS data.

Doolittle LU Decomposition-

In Linear Algebra, the Doolittle Matrix Decomposition is an LU decomposition which decomposes a matrix into a Lower Triangular Matrix (L) and an Upper Triangular Matrix (U).<br><br>The Doolittle LU Decomposition iPad app enables the entry of 2x2, 3x3 and 4x4 matrices, checks for matrix entry validi

Geometric Distribution-

In probability theory and statistics, the geometric distribution is either of two discrete probability distributions: (1) The probability distribution of the number x of Bernoulli trials needed to get one success or (2) The probability distribution of the number y = x − 1 of fai

Lognormal Distribution-

In probability theory, a log-normal (or lognormal) distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed. Thus, if the random variable Y is log-normally distributed, then ln(X) has a normal distribution. Likewise, if Y has a normal distrib

Log Series Distribution-

In probability and statistics, the Log Series Distribution is a discrete probability distribution derived from the Maclaurin series expansion.<br><br>The Log Series Distribution app provides for the data entry of two variables: Number of Trials and a Probability Parameter. The range for the Number

Elementary Set Theory-

Set Theory is the branch of mathematical logic that studies sets, which are collections of objects.<br><br>Elementary Set Theory provides a Drag/Drop user interface utilizing eight colored boxes to illustrate these binary operations on two sets Set A and Set B.<br><br>Union of Set A and Set B<br>Int

Matrix Eigenvalue Calculator-

Matrix Eigenvalue Calculator calculates eigenvalues and eigenvectors for 2x2 symmetric and non-symmetric square matrices.

Fekete Points in the Line-

Fekete points are a set of points which are utilized for polynomial interpolation.<br><br>The Fekete Points in the Line Interval IPad app approximates the location of Fekete points in a line interval.using the Chebyshev basis.<br><br>This app utilizes a line swipe method to draw a line and then comp

Hyperbolic Secant Distribution-

In Probability Theory and Statistics, the Hyperbolic Secant Distribution is a continuous probability distribution whose probability density function and characteristic function are proportional to the hyperbolic secant function. The hyperbolic secant function is equivalent to the inverse hyperbolic

Komolgorov Distribution-

The distribution function of a random variable (x) distributed according to the Kolmogorov's distribution is a continuous function. The random variable (x) is absolute difference between the empirical distribution function and the continuous theoretical distribution function. <br>The Komologorov

Schlomilch's Integral-

The Schlömilch’s integral equations have many applications in atmospheric, terrestrial physics and ionospheric problems. They describe the density profile of electrons from the ionospheric for awry occurrence of the quasi-transverse approximations.

Semicircle Distribution-

The Semicircle Distribution is the probability distribution supported on the interval [−R, R] the graph of whose probability density function f is a semicircle of radius R centered at (0, 0) and then suitably normalized (so that it is really a semi-ellipse):<br><br>Random variable X has the standard

Continental Divide Trail-

Continental Trail Notebook is a GPS enabled iPhone app. It provides for the entry, editing and emailing of Notes and Camera photos for hikers along the Continental Divide Trail. It also includes an Apple Watch app for displaying mileage and GPS information for key points along the trail.

Fourier Sine Transform-

The Fourier Transform expresses a function of time in terms of the amplitude of each of its frequencies. In addition the Fourier Transform a method of decomposing any wave into a series of sine waves.<br><br>The Fourier Sine Transform IPad apps creates a Fourier Transform Sine Wave and a Sine/Cosin

Sheep Notebook for iPhone-

Sheep NoteBook for iPhone is an IOS 13.0 iPhone app which enables the recording and emailing of sheep location and identification information along with a photo taken with the iPhone camera.<br><br>Sheep NoteBook is a GPS enabled iPhone app which automatically obtains latitude, longitude and accurac

Matrix Tridiagonal-

In linear algebra, a tridiagonal matrix is a matrix that has nonzero elements only on the main diagonal, the first diagonal below and the first diagonal above the main diagonal - the sub-diagonals. Tridiagonal Matrices are utilized in the tudy of numerical differential equations.<br><br>The Matrix

Cattle Notebook for iPhone-

Cattle NoteBook for iPhone is an IOS 13.0 iPhone app which enables the recording and emailing of cattle location and identification information along with a photo taken with the iPhone camera.<br><br>Cattle NoteBook is a GPS enabled iPhone app which automatically obtains latitude, longitude and accu

Dirichlet Eta Function-

The Dirichlet series is the alternating sum corresponding to the Dirichlet series expansion of the Riemann zeta function, ζ(s) — and for this reason the Dirichlet eta function is also known as the alternating zeta function, also denoted ζ*(s). <br><br>In Mathematics, The Dirchilet Eta function plays

Golden Section Search-

The Golden Section Search is used to find the maximum or minimum of a continuous, unimodal function. A unimodal function is a function which contains only one minimum or maximum on an interval [a,b].<br><br>The Golden Section Search technique successively narrows a range of values inside a function

Matrix Inverse Calculator-

For a square matrix A, the inverse is written A-1. When A is multiplied by A-1 the result is the identity matrix I. <br><br>Versions for the app exist for iPad, iPhone and Apple Watch for 2x2, 3x3 and 4x4 matrices.

Sheep Notebook-

Sheep NoteBook enables the recording and emailing of sheep location and identification information. Sheep NoteBook is a GPS enabled IPAD app which automatically obtains latitude, longitude and accuracy information via GPS. Sheep information data fields exist for Sheep ID/Name, Eartag, Date/Time

Sheep Pedigree Database-

Sheep Pedigree Database enables the entry Sheep data and the display of lambs and a Pedigree chart for Apple IPad users in the field and office. <br><br>Sheep Pedigree Database presents a full featured add/edit/delete records for a Sheep data table. The Sheep table has data fields for Eartag, Flock

PL/SQL Timestamp/Interval-

A detailed description of five PL/SQL datatypes which are an extension of the Date datatype: Timestamp, Timestamp with Time Zone, Timestamp with Local Time Zone, Interval Year to Month and Interval Day to Second. For each of the five datatypes information for the datatype description, PL/SQL funct

Cattle Database-

Cattle Database is a GPS enabled IPad iOS 9 app which combines the four components for Cattle Treatments, Cattle Measurements, Cattle Pedigree and Cattle Notebook which exist as four free iPad IOS 9 apps<br><br>Cattle Database presents a full featured add/edit/delete records for two Cattle data tabl

Hypergeometric Distribution-

In probability theory and statistics, the hypergeometric distribution is a discrete probability distribution that describes the probability of successes in draws without replacement from a finite population wherein each draw is a success or failure.<br><br>For Data Entry the Hypergeometric Distribut

Appalachian Trail Notebook-

Appalachian Trail Notebook is an Apple IPAD iOS 7 app which enables the recording and emailing of Appalachian Trail location information. Over 1500 AT Trail locations are identified and are listed by the 14 states of the AT Trail and sorted by mileage from the Springer start point. Upon tapping

Jacobi Iteration Calculator-

In linear algebra, the Jacobi iterative method is an algorithm for determining the solutions of a diagonally dominant system of linear equations. Each diagonal element is solved for, and an approximate value is plugged in. <br><br>The Jacobi method is a method of solving a matrix equation on a matr

Sheep Treatments Database-

Sheep Treatments Database enables the entry of Sheep and Sheep Treatments data for Apple IPad users in the field and office. <br><br>Sheep Treatments Database presents a full featured add/edit/delete records for two sheep data tables: sheep and sheep Treatments. The sheep table has data fields for E

Cattle Treatments Database-

Cattle Treatments Database enables the entry of Cattle and Cattle Treatments data for Apple IPad users in the field and office.<br><br>Cattle Treatments Database presents a full featured add/edit/delete records for two Cattle data files: Cattle and Cattle Treatments. The Cattle file has data field

Sheep Measurements Database-

Sheep Measurements Database enables the entry of Sheep and Sheep Treatments data for Apple IPad users in the field and office. <br><br>Sheep Measurements Database presents a full featured add/edit/delete records for two Sheep data tables: Sheep and Sheep Measurements. The Sheep table has data fields

Cattle Pedigree Database-

Cattle Pedigree Database enables the entry of Cattle data and the display of calves and a Pedigree chart for Apple IPad users in the field and office. <br><br>Cattle Pedigree Database presents a full featured add/edit/delete records for a Cattle data table. The Cattle table has data fields for Earta

Cattle Transactions Database-

Cattle Transactions Database enables the entry of Cattle and Cattle Transactions data for Apple IPad users in the field and office. <br><br>Cattle Transactions Database presents a full featured add/edit/delete records for two Cattle data files: Cattle and Cattle Transactions. The Cattle file has dat

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