Filtenna Integration Achieving Ideal Chebyshev Return Losses [PDF]
Radioengineering, 2014 This paper demonstrates that it is possible to find an ideal filter response (Chebyshew, Butterworth,..) considering the antenna as the last resonator of a filter under certain circumstances related with the antenna performance and the bandwidth of the ...
A. Hueltes +5 more
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On the clustering of winter storm loss events over Germany [PDF]
Natural Hazards and Earth System Sciences, 2014 During the last decades, several windstorm series hit Europe leading to large aggregated losses. Such storm series are examples of serial clustering of extreme cyclones, presenting a considerable risk for the insurance industry.
M. K. Karremann +3 more
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The role of serial European windstorm clustering for extreme seasonal losses as determined from multi-centennial simulations of high-resolution global climate model data [PDF]
Natural Hazards and Earth System Sciences, 2018 Extratropical cyclones are the most damaging natural hazard to affect western Europe. Serial clustering occurs when many intense cyclones affect one specific geographic region in a short period of time which can potentially lead to very large seasonal
M. D. K. Priestley +5 more
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Return periods of losses associated with European windstorm series in a changing climate
Environmental Research Letters, 2014 Possible future changes of clustering and return periods (RPs) of European storm series with high potential losses are quantified. Historical storm series are identified using 40 winters of reanalysis.
Melanie K Karremann +3 more
doaj +2 more sources
Returnformer: A Graph Transformer-Based Model for Predicting Product Returns in E-Commerce [PDF]
EntropyE-commerce retailers bear substantial additional costs arising from high product return rates due to lenient return policies and consumers’ impulsive purchasing.
Qian Cao, Ning Zhang, Huiyong Li
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High-resolution refinement of a storm loss model and estimation of return periods of loss-intensive storms over Germany [PDF]
Natural Hazards and Earth System Sciences, 2011 A refined model for the calculation of storm losses is presented, making use of high-resolution insurance loss records for Germany and allowing loss estimates on a spatial level of administrative districts and for single storm events.
M. G. Donat +4 more
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A stochastic model of throughfall for extreme events [PDF]
Hydrology and Earth System Sciences, 2004 Although it is well known that forest canopies reduce the amount and intensity of precipitation at the ground surface, little is known about how canopy interception modifies extreme events.
R.F. Keim +7 more
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Modelling the effects of capital adequacy, credit losses, and efficiency ratio on return on assets and return on equity of banks during COVID-19 pandemic [PDF]
Banks and Bank Systems, 2022 The study aims to determine the impact of Capital Adequacy Ratio, Credit Losses Ratio and Efficiency Ratio on the two significant profitability ratios, namely Return on Assets (ROA) and Return on Equity (ROE), during the pandemic.
Iqbal Thonse Hawaldar +3 more
doaj +1 more source
Design of a Low-Noise 2.4/5.5 GHz Dual-Band LNA Based on Microstrip Structure [PDF]
MicromachinesThis paper presents a 2.4/5.5 GHz single-stage dual-band low-noise amplifier (DB-LNA) based on a microstrip structure. The design utilizes a purely microstrip dual-band bias circuit (DBBC), composed of series microstrip lines and radial stubs.
Mingwen Zhang +4 more
doaj +2 more sources
Improved Microstrip-to-ESIW Transition With Elliptical Dielectric Taper in Ku- and Ka-Bands
IEEE Access, 2022 Empty Substrate Integrated Waveguide (ESIW) technology preserves the many advantages of the Substrate Integrated Waveguide (SIW) such as low cost, low profile, and easy integration with Printed Circuit Boards (PCBs).
Jose A. Ballesteros +4 more
doaj +1 more source