Results 11 to 20 of about 901,690 (248)

¿Existe reversión a la media en el Puerto Rico Stock Index?: Un enfoque Bayesiano

open access: yesFórum Empresarial, 2006
En este artículo se estudia, mediante el uso de la estadística Bayesiana, la existencia de reversión a la media en el índice de valores de Puerto Rico (Puerto Rico Stock Index, PRSI), para horizontes de inversión de corto y largo plazo.
Marta Álvarez, Zylun Rodríguez
doaj   +1 more source

Predicting the price index of Tehran Stock Exchange

open access: yesHolos, 2017
Today, pursuant to development of science and emerging of modern managerial techniques in economics and financial markets, one can hope to achieve more profits by small capitals but appropriate and timely decision making.
H. Abdollahzade, A. Safari
doaj   +1 more source

Variance components of sex determination in the copepod Tigriopus californicus estimated from a pedigree analysis

open access: yesEcology and Evolution, 2023
Extensive theory exists regarding population sex ratio evolution that predicts equal sex ratio (when parental investment is equal). In most animals, sex chromosomes determine the sex of offspring, and this fixed genotype for sex has made theory difficult
Jean M. L. Richardson   +2 more
doaj   +1 more source

Behavioral Economics Approach to Capital Market with Emphasis on Adaptive Market Hypothesis [PDF]

open access: yesفصلنامه بورس اوراق بهادار, 2021
This study investigates the behavior and trend of prices in the Tehran Stock Exchange based on the behavioral economics perspective. In this regard, the Adaptive market hypothesis has examined as a substitute for the classical efficient market hypothesis.
Seyed Kamal Sadeghi   +2 more
doaj   +1 more source

Bootstrap Tests of Multiple Inequality Restrictions on Variance Ratios [PDF]

open access: yesSSRN Electronic Journal, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fleming, Jeff   +2 more
openaire   +1 more source

Generalized Variance‐Ratio Tests in the Presence of Statistical Dependence [PDF]

open access: yesJournal of Time Series Analysis, 2015
This article extends and generalizes the variance‐ratio (VR) statistic by employing an estimator of the asymptotic covariance matrix of the sample autocorrelations. The estimator is consistent under the null for general classes of innovations exhibiting statistical dependence including exponential generalized autoregressive conditional ...
Nankervis, JC, Kougoulis, P, Coakley, J
openaire   +2 more sources

Mixed model with spatial variance–covariance structure for accommodating of local stationary trend and its influence on multi-environmental crop variety trial assessment

open access: yesSpanish Journal of Agricultural Research, 2014
The most common procedure for analyzing multi-environmental trials is based on the assumption that the residual error variance is homogenous across all locations considered.
Asnake Worku Negash   +3 more
doaj   +1 more source

The Study of Mean Reversion in Tehran Security Exchange Using Variance Ratio Test [PDF]

open access: yesبررسی‌های حسابداری و حسابرسی, 2009
Based on efficient market hypothesis the stock prices follow random walk process. In such market the stock return can not be predicted using past price variation.
Reza Tehrani   +2 more
doaj  

Statistical analysis of effects of test conditions on compressive strength of cement solidified radioactive waste

open access: yesNuclear Engineering and Technology, 2023
Radioactive waste should be solidified before being disposed of in the repository to eliminate liquidity or dispersibility. Cement is a widely used solidifying media for radioactive waste, and cement solidified waste should satisfy the minimum ...
Hyeongjin Byeon, Jaeyeong Park
doaj   +1 more source

Efektivitas Hedging Kontrak Futures Komoditi Emas Dengan OLEIN

open access: yesJurnal Manajemen Teori dan Terapan, 2011
This research is for comparing hedging effectiveness in gold and olein commodity. Using Ordinary Least Square (OLS) model to determine the hedge ratio, it’s found that olein hedge ratio is bigger than gold hedge ratio.
Fitri Ismiyanti, Hendra Ima Sasmita
doaj   +1 more source

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