This paper explores bias in the estimation of sampling variance in Respondent Driven Sampling (RDS). Prior methodological work on RDS has focused on its problematic assumptions and the biases and inefficiencies of its estimators of the population mean. Nonetheless, researchers have given only slight attention to the topic of estimating sampling variance in RDS, despite the importance of varianc...

Particle grain size is an important indicator for the variability in physical characteristics and pollutants composition of road-deposited sediments (RDS). Quantitative assessment of the grain-size variability in RDS amount, metal concentration, metal load and GSFLoad is essential to elimination of the uncertainty it causes in estimation of RDS emission load and formulation of control strategie...

In homozygous rds mutant mice the photoreceptor cells lack outer segment discs and slowly degenerate. In the heterozygotes the receptor cells develop abnormal outer segments and show altered disc shedding properties as revealed by the pigment epithelial phagosome content. The receptor cells also degenerate at a slower rate than in the homozygotes. The nature of the interaction resulting in dilu...

Measurements and modelling of rms delay spread (RDS) in indoor line-of-sight (LOS) conditions at HIPERLAN/U-NII frequencies (5.2GHz) with omni-directional antennas show that the maximum RDS in a room is dependent on the dimensions of the room and the reflection coefficient of the walls. Furthermore, in a given room RDS increases with distance from the transmitter up to a maximum value and plate...

BACKGROUND Periodic surveys of research directors (RDs) in emergency medicine (EM) are useful to assess the specialty's development and evolution of the RD role. OBJECTIVES To assess associations between characteristics and research productivity of RDs and EM programs. METHODS A survey of EM RDs was developed using the nominal group technique and pilot tested. RDs or surrogate respondents a...

BACKGROUND We studied the contribution of elective delivery to severe respiratory distress syndrome (RDS) in term babies born at high altitude. METHODS We prospectively studied the charts of term babies born in Taif Maternity Hospital (1640 m above sea level) between 1/1/2004 and 31/10/2004 who developed RDS and required mechanical ventilation. RESULTS 8634 deliveries occurred from 37-<41 w...

AIMS AND OBJECTIVES: Suck development is a challenging hurdle for preterm infants who endure an extensive oxygen history due to respiratory distress syndrome (RDS). The fine structure of the non-nutritive suck (NNS) was studied in preterm infants according to RDS severity. DESIGN AND METHODS: Recordings of NNS were completed cribside in the neonatal intensive care unit (NICU) in 55 preterm infa...

background respiratory distress syndrome (rds) is considered as one of the most popular prematurity-related respiratory problems and among the most prominent reasons of deaths in preterm infants. objectives brain natriuretic peptide (bnp) is the secret of the volume and pressure overload response of the vessels and decreases due to resistance as well as rises in systemic vessels and also in dec...

Most studies on higher education transformation tend to focus on the factors (e.g. leadership, resources, and “culture”), processes (e.g. initiation, implementation, management) and theories (e.g. teleological, social cognition, cultural) of organizational change. Relatively little attention has been paid to how and at what level externally funded initiatives, like the NSF ADVANCE program, are ...

In 2010, FUJIFILM introduced “ETERNA-RDS” that is a black and white film used for archiving from color digital masters. ETERNA-RDS is the first film stock in the world designed especially for a digital separation workflow using a film recorder. ETERNA-RDS offers a significant improvement over conventional non-specific separation film stock, accurate gradation linearity, improved granularity, su...