منابع مشابه
Testing for unit roots in autoregressions with multiple level shifts ∗
The asymptotic distributions of Augmented-Dickey-Fuller (ADF) unit root tests for autoregressive processes with a unit or near-unit root are discussed in the presence of multiple stochastic level shifts of large size occurring independently in time. The distributions depend on a Brownian motion and a Poisson-type jump process. Due to the latter, tests based on standard critical values experienc...
متن کاملPartial Knowledge in Multiple-Choice Testing
The intent of this study was to discover the nature of (partial) knowledge as estimated by the multiple-choice (MC) test method. An MC test of vocabulary, including 20 items, was given to 10 participants. Each examinee was required to think aloud while focusing on each item before and while making a response. After each test taker was done with each item, s/he was ...
متن کاملNecessity of Routine Repeat Testing of Critical Values in Various Working Shifts
Background & Objective: Accurate and timely reporting of critical values is an important issue. There is some doubt whether repeat testing of critical values would offer any advantage over single testing or not. The aim of this study was evaluation of utility of routine repeat testing of critical values in our referral center and to compare probable variations in different work...
متن کاملTesting for unit roots in time series with level shifts
Tests for unit roots in univariate time series with level shifts are proposed and investigated The level shift is assumed to occur at a known time It may be a simple one time shift which can be captured by a dummy variable or it may have a more general form which can be modeled by some general nonlinear transition function There may also be more than one shift point and there may be other deter...
متن کاملTesting Equivalence of Polynomials under Shifts
Two polynomials f, g ∈ F[x1, . . . , xn] are called shift-equivalent if there exists a vector (a1, . . . , an) ∈ F such that the polynomial identity f(x1 +a1, . . . , xn +an) ≡ g(x1, . . . , xn) holds. Our main result is a new randomized algorithm that tests whether two given polynomials are shift equivalent. Our algorithm runs in time polynomial in the circuit size of the polynomials, to which...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1957
ISSN: 0032-5791
DOI: 10.3382/ps.0360143