title: Modelling and simulation: An overview

authors: McAleer, Michael

subjects: modelling

abstract: The papers in this special issue of Mathematics and Computers in Simulation cover the following topics: improving judgmental adjustment of model-based forecasts, whether forecast updates are progressive, on a constrained mixture vector autoregressive model, whether all estimators are born equal: the empirical properties of some estimators of long memory, characterising trader manipulation in a limit-order driven market, measuring bias in a term-structure model of commodity prices through the comparison of simultaneous and sequential estimation, modelling tail credit risk using transition matrices, evaluation of the DPC-based inclusive payment system in Japan for cataract operations by a new model, the matching of lead underwriters and issuing ﬁrms in the Japanese corporate bond market, stochastic life table forecasting: a time-simultaneous fan chart application, adaptive survey designs for sampling rare and clustered populations, income distribution inequality, globalization, and innovation: a general equilibrium simulation, whether exchange rates affect consumer prices: a comparative analysis for Australia, China and India, the impacts of exchange rates on Australia’s domestic and outbound travel markets, clean development mechanism in China: regional distribution and prospects, design and implementation of a Web-based groundwater data management system, the impact of serial correlation on testing for structural change in binary choice model: Monte Carlo evidence, and coercive journal self citations, impact factor, journal inﬂuence and article inﬂuence

text: Modelling and simulation: An overview The papers in this special issue of Mathematics and Computers in Simulation cover the following topics: improving judgmental adjustment of model-based forecasts, whether forecast updates are progressive, on a constrained mixture vector autoregressive model, whether all estimators are born equal: the empirical properties of some estimators of long memory, characterising trader manipulation in a limit-order driven market, measuring bias in a term-structure model of commodity prices through the comparison of simultaneous and sequential estimation, modelling tail credit risk using transition matrices, evaluation of the DPC-based inclusive payment system in Japan for cataract operations by a new model, the matching of lead underwriters and issuing ﬁrms in the Japanese corporate bond market, stochastic life table forecasting: a time-simultaneous fan chart application, adaptive survey designs for sampling rare and clustered populations, income distribution inequality, globalization, and innovation: a general equilibrium simulation, whether exchange rates affect consumer prices: a comparative analysis for Australia, China and India, the impacts of exchange rates on Australia’s domestic and outbound travel markets, clean development mechanism in China: regional distribution and prospects, design and implementation of a Web-based groundwater data management system, the impact of serial correlation on testing for structural change in binary choice model: Monte Carlo evidence, and coercive journal self citations, impact factor, journal inﬂuence and article inﬂuence

year: 2013

title: Achieving reliable and repeatable electrochemical impedance spectroscopy of rechargeable batteries at extra-low frequencies

authors: Dunn, Christopher

abstract: There is a need for techniques for efficient and accurate measurement of the impedance of rechargeable batteries at extra-low frequencies (ELFs, of the order of microhertz), as these reflect real usage and cycling patterns, and their importance in fractional battery circuit modeling is becoming increasingly apparent. Major impediments include the time required to perform such measurements and “drift” in impedance values when measurements are taken from the same battery at different times. Moreover, commercial impedance analyzers are generally unable to measure at these frequencies. We describe here our use of programmable two-quadrant power supplies to deliver multiple small-signal measurement tones in the presence of large-signal “working” currents, and our use of these data to generate impedance measurements with good precision and in reasonable time. The improvement in the quality of electrochemical impedance spectroscopy (EIS) data is verified through root-mean-square error (RMSE) when fitting equivalent-circuit models (ECMs).

text: Achieving reliable and repeatable electrochemical impedance spectroscopy of rechargeable batteries at extra-low frequencies There is a need for techniques for efficient and accurate measurement of the impedance of rechargeable batteries at extra-low frequencies (ELFs, of the order of microhertz), as these reflect real usage and cycling patterns, and their importance in fractional battery circuit modeling is becoming increasingly apparent. Major impediments include the time required to perform such measurements and “drift” in impedance values when measurements are taken from the same battery at different times. Moreover, commercial impedance analyzers are generally unable to measure at these frequencies. We describe here our use of programmable two-quadrant power supplies to deliver multiple small-signal measurement tones in the presence of large-signal “working” currents, and our use of these data to generate impedance measurements with good precision and in reasonable time. The improvement in the quality of electrochemical impedance spectroscopy (EIS) data is verified through root-mean-square error (RMSE) when fitting equivalent-circuit models (ECMs).

year: 2022

title: Tauira Rangatahi Numeracy and Literacy Programme: Apps in Numeracy and Literacy Research

authors: Calder, Nigel Stuart

subjects: Youth Guarantee

abstract: A key aspect of tertiary education undertaken by Te Wananga o Aotearoa (TWoA) is re-establishing engagement and success in the rangatahi space through meeting the literacy and numeracy demands for programmes at levels 1–3. TWoA has Youth Guarantee programmes that deliver introductory Sport and Leisure and Contemporary Māori Arts programmes with embedded literacy and numeracy. The purpose of this research project was to investigate tauira rangatahi attitudes towards literacy and numeracy development through the application of appropriate cultural capital in conjunction with contemporary digital technologies. The research examined the influence of iPad apps on the beliefs and attitudes of Youth Guarantee tauira towards numeracy and literacy.

text: Tauira Rangatahi Numeracy and Literacy Programme: Apps in Numeracy and Literacy Research A key aspect of tertiary education undertaken by Te Wananga o Aotearoa (TWoA) is re-establishing engagement and success in the rangatahi space through meeting the literacy and numeracy demands for programmes at levels 1–3. TWoA has Youth Guarantee programmes that deliver introductory Sport and Leisure and Contemporary Māori Arts programmes with embedded literacy and numeracy. The purpose of this research project was to investigate tauira rangatahi attitudes towards literacy and numeracy development through the application of appropriate cultural capital in conjunction with contemporary digital technologies. The research examined the influence of iPad apps on the beliefs and attitudes of Youth Guarantee tauira towards numeracy and literacy.

year: 2014