Results 41 to 50 of about 6,213,269 (396)
Testing weak form efficiency in the South African market
Journal of Economic and Financial Sciences, 2015 This paper furthers the work on efficiency of developing markets with specific focus on the JSE Limited. Empirical work on the efficiency of the JSE has been mixed; evidence both in favour of and against weak form efficiency is prominent.
Elmar Grater, Jean Struweg
doaj +1 more source
, 2007 We investigate the behavior of the Shanghai Stock Exchange Composite (SSEC) index for the period from 1990:12 to 2007:06 using an unconstrained two-regime threshold autoregressive (TAR) model with an unit root developed by Caner and Hansen.
Basci +23 more
core +1 more source
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
Least Squares Bias in Time Series with Moderate Deviations from a Unit Root
Journal of Time Series Analysis, 2018 This articles derives the approximate bias of the least squares estimator of the autoregressive coefficient in discrete autoregressive time series where the autoregressive coefficient is given by αT=1+c/kT, with kT being a deterministic sequence ...
Marian Z. Stoykov
semanticscholar +1 more source
FEBS Letters, EarlyView.In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley +1 more source
UNIT ROOTS IN PERIODIC AUTOREGRESSIONS [PDF]
Journal of Time Series Analysis, 1996 Abstract. This paper analyzes the presence and consequences of a unit root in periodic autoregressive models for univariate quarterly time series. First, we consider various representations of such models, including a new parametrization which facilitates imposing a unit root restriction.
Boswijk, H.P., Franses, P.H.
openaire +3 more sources
By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +1 more source
Mehmet Akif Ersoy Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi, 2023 Bu çalışmada, Türkiye'de yapısal kırılmalar altında uluslararası petrol fiyatları ile enflasyon arasındaki uzun dönemli ilişki 1960-2020 dönemi verileri kullanılarak analiz edilmektedir. Bu doğrultuda Carrion-i-Silvestre vd.
Gökhan Kartal
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A new nonlinear unit root test with Fourier function
Communications in statistics. Simulation and computation, 2018 Traditional unit root tests display a tendency to be nonstationary in the case of structural breaks and nonlinearity. To eliminate this problem this paper proposes a new flexible Fourier form nonlinear unit root test. This test eliminates this problem to
Burak Güriş
semanticscholar +1 more source
FEBS Letters, EarlyView.Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang +5 more
wiley +1 more source