In the context of regression-based (quarterly) seasonal unit root tests, we examine the impact of initial conditions (one for each quarter) of the process on test power. We investigate the behaviour of the OLS detrended HEGY seasonal unit root tests of Hylleberg et al. (1990) and the corresponding quasi-differenced (QD) detrended tests of Rodrigues and Taylor (2007), when the initial conditions...

Apoptosis is essential not only to the normal development of a multicellular organism but also for the maintenance of tissue homeostasis. This proposal seeks to investigate, in part, the role of oligodendrocyte (OL) apoptosis in myelination. We used an OL-specific conditional knockout animal to study caspase-8 function in OL development; analyzing histological differences in myelination at post...

The urban population (UP) measure is one of the most direct indicators that reflect the urbanization process and the impacts of human activities. The dynamics of UP is of great importance to studying urban economic, social development, and resource utilization. Currently, China lacks long time series UP data with consistent standards and comparability over time. The nighttime light images from ...

Intracerebroventricular (i.c.v.) infusion of NaCl mimics the effects of a high-salt diet in salt-sensitive hypertension, raising the sodium concentration in the cerebrospinal fluid (CSF [Na]) and subsequently increasing the concentration of an endogenous ouabain-like substance (OLS) in the brain. The OLS in turn inhibits the brain Na, K-ATPase, causing an increase in the activity of the brain r...

Intracerebroventricular (ICV) infusion of NaCl mimics the effects of a high-salt diet in salt-sensitive hypertension, raising the sodium concentration in the cerebrospinal fluid (CSF [Na]) and subsequently increasing the concentration of an endogenous ouabain-like substance (OLS) in the brain. The OLS, in turn, inhibits the brain Na(+)-K(+)-ATPase, causing increases in the activity of the brain...

Time preferences vary by age. Notably, according to experimental studies, senior citizens tend to discount future payoff s more heavily than working-age individuals. Based on these fi ndings, we hypothesize that demographic change has contributed to the cut-back in government-fi nanced investment that many advanced economies experienced over the last four decades. We demonstrate for a panel of ...

This research investigates the hedging effectiveness of stock index futures markets in Malaysia and Singapore by employing various hedge ratio estimation methods, which comprises of the conventional OLS model, VECM, EGARCH and bivariate GARCH. The empirical results indicate that the Kuala Lumpur Futures Index (KLFI) provides higher hedging effectiveness compared to the Straits Times Index (STI)...

Hypoxia-ischemia (HI) causes injury to oligodendrocytes (OLs), cells which create the myelin sheath in the developing brain. OLs pass successively through progenitor and immature stages during differentiation into mature OLs. Only the OLs in the progenitors stage can express the platelet-derived growth factor-α receptor (PDGF-Rα) so that its expression is one of the cellular markers of OL proge...

PURPOSE To a) introduce and present the advantages of linear mixed models using generalized least squares (GLS) when analyzing repeated measures data; and b) show how model misspecification and an inappropriate analysis using repeated measures ANOVA with ordinary least squares (OLS) methodology can negatively impact the probability of occurrence of Type I error. METHODS The effects of three s...

Mapping Impervious Surface Area (ISA) at regional and global scales has attracted increasing interest. DMSP-OLS nighttime light (NTL) data have proven to be successful for mapping urban land in large areas. However, the well-documented issues of pixel blooming and saturation limit the ability of DMSP-OLS data to provide accurate urban information. In this paper, a multi-source composition index...