Endogenous control of migration and calendar effects in an intratropical migrant, the yellow-green vireo

2004 ◽  
Vol 67 (6) ◽  
pp. 1141-1149 ◽  
Author(s):  
John D Styrsky ◽  
Peter Berthold ◽  
W.Douglas Robinson
Keyword(s):  
Endogenous Control ◽  
Calendar Effects

DYNAMICAL ESTIMATION OF CALENDAR EFFECTS

2006 ◽  
Vol 06 (01) ◽  
pp. L7-L15
Author(s):  
ALEXANDROS LEONTITSIS
Keyword(s):  
Dynamical System ◽  
Time Series ◽  
Noise Level ◽  
Nonlinear Dynamical System ◽  
Main Tool ◽  
Experimental Results ◽  
Accurate Estimation ◽  
Nonlinear Dynamical ◽  
Correlation Integral ◽  
Calendar Effects

The paper introduces a method for estimation and reduction of calendar effects from time series, which their fluctuations are governed by a nonlinear dynamical system and additive normal noise. Calendar effects can be considered deviations of the distribution(s) of particular group(s) of observations that have a common characteristic related to the calendar. The concept of this method is the following: since the calendar effects are not related to the dynamics of the time series, the accurate estimation and reduction will result a time series with a smaller amount of noise level (i.e. more accurate dynamics). The main tool of this method is the correlation integral, due to its inherit capability of modeling both the dynamics and the additive normal noise. Experimental results are presented on the Nasdaq Cmp. index.

scholarly journals Relative expression of mRNAs related to cavitation process in bovine embryos produced in vivo and in vitro

2011 ◽  
Vol 40 (1) ◽  
pp. 124-128
Author(s):  
Sabine Wohlres-Viana ◽  
Mariana Cortes Boite ◽  
João Henrique Moreira Viana ◽  
Marco Antonio Machado ◽  
Luiz Sérgio de Almeida Camargo
Keyword(s):  
Culture System ◽  
Rna Extraction ◽  
Endogenous Control ◽  
Bovine Embryos ◽  
Relative Expression ◽  
Gapdh Gene ◽  
Expression Of Genes ◽  
In Vitro Culture System

The objectives of this work were to identify and to evaluate possible differences on gene expression of aquaporins and Na/K-ATPases transcripts between embryos in vivo and in vitro produced. For each group, 15 blastocysts distributed in three pools were used for RNA extraction followed by amplification and reverse transcription. The resulting cDNAs were submitted to Real-Time PCR, using the GAPDH gene as endogenous control. It was not possible to identify AQP1 transcripts. Relative expression of AQP3 (1.33 ± 0.78) and AQP11 (2.00 ± 1.42) were not different in blastocysts in vitro and in vivo produced. Na/K-ATPase α1 gene (2.25 ± 1.07) was overregulated whereas Na/K-ATPase β2 transcripts 0.40 ± 0.30) did not differ among blastocysts produced in vitro from those produced in vivo. Transcripts for gene AQP1 are not present in bovine blastocysts. In vitro culture system does not alter expression of genes AQP3, AQP11 and Na/K-ATPase β2 genes, however, it affects expression of Na/K-ATPase α1.

scholarly journals Identification of valid endogenous control genes for determining gene expression in human glioma

2010 ◽  
Vol 12 (6) ◽  
pp. 570-579 ◽  
Author(s):  
S. Kreth ◽  
J. Heyn ◽  
S. Grau ◽  
H. A. Kretzschmar ◽  
R. Egensperger ◽  
...  
Keyword(s):  
Gene Expression ◽  
Endogenous Control ◽  
Human Glioma

Endotoxin in Human Disease and its Endogenous Control

2000 ◽  
pp. 114-130 ◽  
Author(s):  
Alexander Shnyra ◽  
Michael Luchi ◽  
Jiangjun Gao ◽  
Christopher J. Papasian ◽  
David L. Horn ◽  
...  
Keyword(s):  
Human Disease ◽  
Endogenous Control

scholarly journals Sensitivity of the Art Market to Price Volatility

2020 ◽  
Vol 2 (26) ◽  
pp. 11-36
Author(s):  
Krzysztof Borowski
Keyword(s):  
Stock Market ◽  
Art Market ◽  
Price Volatility ◽  
Income Risk ◽  
Rates Of Return ◽  
Calendar Effects ◽  
Post War ◽  
Investment Portfolios ◽  
Market Indexes ◽  
Almost All

The purpose of the article: The art market becomes very popular among investors, when there is strong turbulence on the stock market. In times of calm, the art market is used by investors to diversify risk and build more efficient investment portfolios according to the Markovitz’s theory. The aim of this paper is to: (i) present the peculiarity of investment on the art market, represented by art market indexes in comparison to traditional investments in other financial market segments (money market, equity indexes and commodity market), (ii) to verify the hypothesis of normality of the distribution of rates of return of the analyzed art market indices as well as (iii) to analyze calendar effects occurrence on the art market.Methodology: Comparison of rates of return on the stock, bond, commodity and money markets with rates on the art market in four different time intervals. For each of the analyzed periods, an income-risk map was presented, taking into account the spectrum of financial instruments, including six art indexes: Old Masters, 19th Century, Modern art, Post War art, Contemporary art and Global art. The hypothesis of normality of the distribution of rates of return of the art market indices for four analyzed periods was verified with the use of Jarque-Bera test.Results of the research: Comparison of rates of return on the stock market and art market leads to the conclusion that their relationship depends on the period chosen. For two of the analyzed periods, the rates of return on the stock market were higher than on the art market, but for others periods, the opposite. The distribution of quarterly rates of return resulted to be a normal distribution for almost all of analyzed indices and time periods. Calendar effects were observed in the case of four analyzed indexes.

scholarly journals A Review of Market Segmentation and Inefficiencies of the Chinese Stock Market

2015 ◽  
Vol 4 (4) ◽  
pp. 18-28
Author(s):  
Shuang Feng ◽  
Jon Stewart
Keyword(s):  
Stock Market ◽  
Market Segmentation ◽  
Recent Literature ◽  
Emerging Market ◽  
Chinese Stock Market ◽  
Future Studies ◽  
Calendar Effects ◽  
Market Inefficiencies ◽  
The Past ◽  
Market Inefficiency

The Chinese stock market is an emerging market that has gained much importance over the past few decades. Because of this, it also serves as a great subject for studying market inefficiencies and anomalies. In this paper we provide a review of evidence regarding the development, efficiency and integration of the Chinese stock market. In particular, we review recent literature in the areas of market segmentation, cross-listings and calendar effects. This provides evidence of market inefficiency in China. We also pose questions that can be answered in future studies.

Intraday Patterns, Announcement Effects, and Volatility Persistence in the Japanese Government Bond Futures Market

2009 ◽  
Vol 12 (01) ◽  
pp. 63-85 ◽  
Author(s):  
Weihua Shi ◽  
Larry Eisenberg ◽  
Cheng-few Lee
Keyword(s):  
Stock Exchange ◽  
Japanese Government ◽  
Government Bond ◽  
Calendar Effects ◽  
Announcement Effects ◽  
Volatility Persistence ◽  
Macroeconomic Announcements ◽  
The Us ◽  
Treasury Bond ◽  
Bond Futures

Following Bollerslev et al. (2000), this study characterizes the high-frequency volatility of the Japanese Government Bond (JGB) futures on the Tokyo Stock Exchange (TSE) in terms of intraday calendar effects, announcement effects and volatility persistence effects. The results indicate that, unlike the case for the US Treasury bond futures, only four out of 21 scheduled macroeconomic announcements are found to have a significant impact on volatilities, and their instantaneous and daily influences are rather small. At both instantaneous and daily frequencies, volatility persistence effects have the largest influence on volatility, while macroeconomic announcements have only a negligible impact.

Sign in / Sign up

Export Citation Format

Share Document