82 research outputs found

    Good corporate governance is good for banks\u27 bottom line

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    Sound corporate governance not only boosts banks\u27 efficiency, it is also good for the profit of Australian banks and their shareholders. However, new research shows that factors such as the number of board meetings, the involvement of large shareholders in boardroom decisions and whether or not the board has independent members don\u27t play a significant role in achieving those goals

    An Empirical Study of Business Student Engagement with Active Teaching Strategies: A Comparison of First Year and Senior Students

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    The quantitative evaluation of student engagement has been difficult to achieve. This study uses Kahu’s (2013) conceptual framework to investigate the effectiveness of active teaching strategies and how they influence Business students’ engagement in a blended learning environment. First, we quantify the influence of various in-class active teaching activities and out-of-class support tools upon student engagement. The link between engagement and student outcomes in terms of academic results and personal and professional skills development is then captured in our empirical modelling. Results are compared between first year and senior students to understand significant differences in their engagement and experience. Our findings suggest that first year students display a higher propensity to utilize in-class learning activities and out-of-class support tools. This in turn, establishes a strong link with their engagement patterns. However, there is a weaker link between first year student engagement and outcomes compared to senior students. Overall, this study reinforces the usefulness of Kahu’s framework to guide curricula developments that cater for learners’ different needs

    Performance index improvement of a double-pipe cooler with MgO/water-ethylene glycol (50:50) nano-suspension

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    A series of tests was conducted to unlock the potential application of MgO/water-EG (ethylene glycol) nanofluids (NF) in a double-pipe heat exchanger (HEX). The overall heat transfer coefficient (HTC), the inlet temperature of the working fluid, the fluid pressure drop (FPD), friction factor (FF) and the hydraulic performance index of the NF within the HEX were experimentally measured. Fouling of nanoparticles (NPs) within the Hex was also studied and modelled using asymptotic particulate fouling model. Results showed that MgO NPs can enhance the HTC by 39% at Re=10,500 and wt.% = 0.3 in the turbulent regime. Also, the presence of MgO NPs augmented the FF and the FPD values. The former was enhanced 33.8%, while the latter was augmented by 37% both at wt.% = 0.3 and at Reynolds number = 10,500. Results also revealed that the formation of porous particulate fouling layer on the internal wall of the inner tube creates a fouling thermal resistance which changes asymptotically with time. Overall, MgO/water-ethylene glycol shows a great potential to be used as a coolant within a HEX.H. Arya, M.M. Sarafraz, O. Pourmehran, M. Arjomand

    An Empirical Study of Business Student Engagement with Active Teaching Strategies: A Comparison of First Year and Senior Students

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    The quantitative evaluation of student engagement has been difficult to achieve. This study uses Kahu’s (2013) conceptual framework to investigate the effectiveness of active teaching strategies and how they influence Business students’ engagement in a blended learning environment. First, we quantify the influence of various in-class active teaching activities and out-of-class support tools upon student engagement. The link between engagement and student outcomes in terms of academic results and personal and professional skills development is then captured in our empirical modelling. Results are compared between first year and senior students to understand significant differences in their engagement and experience. Our findings suggest that first year students display a higher propensity to utilize in-class learning activities and out-of-class support tools. This in turn, establishes a strong link with their engagement patterns. However, there is a weaker link between first year student engagement and outcomes compared to senior students. Overall, this study reinforces the usefulness of Kahu’s framework to guide curricula developments that cater for learners’ different needs

    Phase transition between synchronous and asynchronous updating algorithms

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    We update a one-dimensional chain of Ising spins of length LL with algorithms which are parameterized by the probability pp for a certain site to get updated in one time step. The result of the update event itself is determined by the energy change due to the local change in the configuration. In this way we interpolate between the Metropolis algorithm at zero temperature for pp of the order of 1/L and for large LL, and a synchronous deterministic updating procedure for p=1p=1. As function of pp we observe a phase transition between the stationary states to which the algorithm drives the system. These are non-absorbing stationary states with antiferromagnetic domains for p>pcp>p_c, and absorbing states with ferromagnetic domains for p≀pcp\leq p_c. This means that above this transition the stationary states have lost any remnants to the ferromagnetic Ising interaction. A measurement of the critical exponents shows that this transition belongs to the universality class of parity conservation.Comment: 5 pages, 3 figure

    International Consensus Statement on Rhinology and Allergy: Rhinosinusitis

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    Background: The 5 years since the publication of the first International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed foundational progress in our understanding and treatment of rhinologic disease. These advances are reflected within the more than 40 new topics covered within the ICAR‐RS‐2021 as well as updates to the original 140 topics. This executive summary consolidates the evidence‐based findings of the document. Methods: ICAR‐RS presents over 180 topics in the forms of evidence‐based reviews with recommendations (EBRRs), evidence‐based reviews, and literature reviews. The highest grade structured recommendations of the EBRR sections are summarized in this executive summary. Results: ICAR‐RS‐2021 covers 22 topics regarding the medical management of RS, which are grade A/B and are presented in the executive summary. Additionally, 4 topics regarding the surgical management of RS are grade A/B and are presented in the executive summary. Finally, a comprehensive evidence‐based management algorithm is provided. Conclusion: This ICAR‐RS‐2021 executive summary provides a compilation of the evidence‐based recommendations for medical and surgical treatment of the most common forms of RS

    Does corporate governance affect Australian banks\u27 performance?

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    Worldwide, recent corporate collapses have added to the insecurity of financial markets, triggering regulatory responses. This study provides empirical evidence of the relationship between corporate governance and the efficiency of Australian banks between 1999 and 2013, using two-stage double-bootstrap data envelopment analysis. Of the five corporate governance factors considered, we find board size and committee meetings have robustly significant and positive effects on efficiency. We also find evidence of improvements in overall industry efficiency following the 2003 introduction of the Principles of Good Corporate Governance, but not of any statistically-significant influence of the GFC

    NOVEL QCA CONTROL GATE AND NEW DESIGNING OF MEMORY ON THE BASIS OF QUANTUM DOT CELLULAR AUTOMATA WITH MINIMUM QCA BLOCKS

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    ABSTRACT New technology of designing quantum-dot cellular automata circuits (QCA) has been studied in previous decades because of its tiny dimensions, high speed and very low power consumption. This technology has proved its ability of using the quantum knowledge in constructing logical devices so that considered as a suitable substitute for CMOS technology. In this paper, a new control gate (4-status gate) is designed on the basis of QCA technology. This special gate establishes four logical functions, 3-inputs AND and OR, OR in AND binary and AND in OR binary. These functions are very useful in designing digital circuits. By using them, logical circuits can be designed in minimum number of QCA blocks and less number of gates and consequently higher speed and lower consumable power. Also, a novel circuit and new formulation structure is presented for memory cell. In this formulation, the memory cell structured in a single layer, with 74 QCA cells, by using the new 4-status gate which is introduced in this paper. At last, correctness and completeness of design is experimentally validated by simulating it with QCA-Designer tools. KEY WORDS : Quantum-Dot Cellular Automata, Qca, Base Cell, Majority Gate, Circuit's Formulation, Memory. In the last three decades, smaller scale in designing VLSI systems with high speed and low power achieved by the use of CMOS technology. But, decrease in transistors size to nanometer scale causes unwilling changes in system behavior. Exploitation of symmetry in logic systems is a solution to solve this problem The base of QCA function is encoding binary information on the basis of electron's position in the Quantum cell By increase in switching speed, this technology makes a better frequency answers in electronic circuits. Also it decreases the consumable power slightly. In addition, it can design denser circuits to 1012 devices/cm2 In this paper, first the function of Quantum dot is described and then a new control gate (4status gate) will be introduced and its function will be explained and demonstrate the validation of this gate with cells energy calculation. In addition, the method of creating basic gates and transforming crossover routes into a single layer and a new method in transforming input with it's NOT will be presented. The memory circuits with the new 4status gate and the cell formulation for presenting this circuit will be introduced later. Then benefits of this circuit in contrast with previous ones will be discussed. At the end, with simulation of this circuit by the use of QCA-designer, the conclusion will be surveyed and their truth will be proved. DESCRIBING THE USE OF QUANTUM-DOT CELL IN BASIC BLOCK'S DESIGN: Structure of the auto cells in QCA is very exclusive. Each cell consists of 4 places for Quantum-dot and two trapped electrons that are shown in Columbic interaction between electrons causes the diagonal order in cells and this power influences the neighbor cells to follow those electrons in their configuration. As it's seen in Fig. 2: oriented 90-degree cells polarization Because of columbic interaction between electrons, neighbor electrons organize like figure3-and in 90 degree state they appears lik

    Heat transfer and fluid flow of MgO/ethylene glycol in a corrugated heat exchanger

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    The present work aims to investigate the thermo-hydraulic performance of a counter-current corrugated plate heat exchanger working with MgO/ethylene glycol nanofluid. MgO nanoparticles were dispersed in ethylene glycol at different weight (mass) concentrations of 0.1 %, 0.2 % and 0.3 % and nanofluids were introduced to a heat exchanger in form of a counter-current flow to exchange heat with water. The test rig provided conditions to measure the influence of different operating parameters such as fluid flow, mass concentration and inlet temperature of the nanofluid on heat transfer coefficient, pressure drop, and thermal performance index of the heat exchanger. Results showed that flow rate and mass concentration can intensify the convective heat transfer coefficient. However, they both increase the pressure drop of the system. The heat transfer coefficient, pressure drop was found to be enhanced by 35 % and 85 %, respectively at wt.% = 0.3. Interestingly, inlet temperature was found to only increase the heat transfer coefficient slightly (up to 9.8 % at wt.% = 0.3) and had no influence on the values of pressure drop. The presence of MgO nanoparticles was found to increase the thermo-hydraulic performance index of the heat exchanger by 34 %.H. Arya, M. M. Sarafraz and M. Arjomand
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