4,208 research outputs found
Towards consistency: digital learning thresholds
We report on the development of CCCU Digital Learning Thresholds (DLT). The principle aim of DLT is that all CCCU students have access to digital learning, and that all staff and students will have clear expectations about how, why and when to use digital learning. In addition DLT also align with and supports the VLE consistency agenda. Furthermore, we have developed an innovative evaluation framework to assess the success of our DLT as well proposing their integrating into a blended learned model which emcompasses a quality assurance and enhancement pathway
COVID-19 social distancing measures and economic growth: Distinguishing short- and long-term effects
Social distancing policies have been criticized for their adverse effect on economies. However, we evidence that while they have a short-run adverse effect, they also have a long-run recovery effect on economic growth. Utilizing quarterly gross domestic product (GDP) growth rate data from OECD member states, we find that the medium-term recovery effect of stringent social distancing policies on economic growth is three times higher the short-term adverse effect. We additionally investigate social distancing measures with sub-components of GDP, as well as the conditioning roles of institutional factors
Modeling Probability of Path Loss for DSDV, OLSR and DYMO above 802.11 and 802.11p
This paper presents path loss model along with framework for probability
distribution function for VANETs. Furthermore, we simulate three routing
protocols Destination Sequenced Distance Vector (DSDV), Optimized Link State
Routing (OLSR) and Dynamic MANET On-demand (DYMO) in NS-2 to evaluate and
compare their performance using two Mac-layer Protocols 802.11 and 802.11p. A
novel approach of this work is modifications in existing parameters to achieve
high efficiency. After extensive simulations, we observe that DSDV out performs
with 802.11p while DYMO gives best performance with 802.11.Comment: IEEE 8th International Conference on Broadband and Wireless
Computing, Communication and Applications (BWCCA'13), Compiegne, Franc
Levels of mercury and arsenic contamination in popular fish and shrimp brands consumed in Saudi Arabia
ABSTRACT. Fish and shrimp are public sources of healthy protein for a large fragment of the Saudi population. Therefore, the present work was conducted to assess the level of possible arsenic (As) and mercury (Hg) contamination of these sea foods. Eight species of fish and two species of shrimp were collected from the local markets of Eastern Province, Saudi Arabia. Mercury and arsenic concentration of samples was determined by hydride generation atomic absorption spectrometry (HG-AAS). Highest average concentration of total Hg was found in Siganus canaliculatus (0.54 ± 0.06 µg/g) while the lowest level was detected in Lethrinus miniatus (0.24 ± 0.07 µg/g). For shrimp species, the levels varied from 0.13 to 0.91 µg/g for mercury and 0.19 to 0.53 µg/g for arsenic. The rank order of shrimp species based upon mercury level was Penaeus semisulcatus > Penaeus indicus; whereas based upon arsenic level it was almost similar. Mean levels of both Hg and As in all the species studied are lower than the limits set by international health agencies; 0.550 µg/g for mercury and 6.0 µg/g for arsenic. KEY WORDS: Arabian Gulf, Fish, Shrimp, Arsenic, Mercury Bull. Chem. Soc. Ethiop. 2019, 33(3), 573-578. DOI: https://dx.doi.org/10.4314/bcse.v33i3.1
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