1,041 research outputs found
Acamprosate enhances N-methyl-D-apartate receptor-mediated neurotransmission but inhibits presynaptic GABA(B) receptors in nucleus accumbens neurons
No full textImplementation of WG Stream Cipher with Involution Function
No full textAbstractThis paper present a new hardware design of WelchGong (WG)128 cipher. The proposed WG Stream cipher use an involution function block, for increasing the security of private data. The hardware complexity of involution block is very less. Together with the involution block the randomness property of the resulting WG cipher will increases
The role of classification and reference vessels in the design of inland fairways for commercial vessels – contribution to the Workshop of WG 141 Design Guidelines for Inland Waterways
No full textThe Pianc WG 141 is proceeding in the conception of Design Guidelines for Inland Waterways. WG 141 aims to produce its first draft in the end of 2015. Part of the forseen content are classification of waterways and the object of reference vessels. The role of those subjects will be presented and discussed in the Workshop, that WG 141 will give during the Smart Rivers 2015 Conference, scheduled at the 8th of September.Hydraulic EngineeringCivil Engineering and Geoscience
IEA SHC Task 42 / ECES Annex 29 WG A1: Engineering and Processing of PCMs, TCMs and Sorption Materials
No full textAn overview on the recent results on the engineering and characterization of sorption materials, PCMs and TCMs investigated in the working group WG A1 “Engineering and processing of TES materials” of IEA SHC Task 42 / ECES Annex 29 (Task 4229) entitled “Compact Thermal Energy Storage” is presented
Pt-AlGaN/GaN HEMT-sensor layout optimization for enhancement of hydrogen detection
No full textThis paper reports on the layout optimization of Pt-AlGaN/GaN HEMT-sensors for enhancing hydrogen sensor performance. Sensors with gate width and length ratios Wg/Lg from 0.25 to 10 were designed, fabricated and tested for the detection of hydrogen gas at 200 °C. Sensitivity, sensing current variation and transient response are directly related to the sensor gate electrode Wg/Lg ratio. The obtained results demonstrated a 217 % increase in sensitivity and 4630 % increase in sensing current variation at 500 ppm H2 for a Wg/Lg from 0.25 to 10. In addition, the detection limit was lowered to 5 ppm. Transient characteristics demonstrated faster sensor response to H2, but slower recovery rates with increasing ratio.Accepted author manuscriptElectronic Components, Technology and Material
A pressure-robust stabilizer-free WG finite element method for the Stokes equations on simplicial grids
No full textThis article was originally published in Electronic Research Archive. The version of record is available at: https://doi.org/10.3934/era.2024158. © 2024 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)A pressure-robust stabilizer-free weak Galerkin (WG) finite element method has been defined for the Stokes equations on triangular and tetrahedral meshes. We have obtained pressure-independent error estimates for the velocity without any velocity reconstruction. The optimal-order convergence for the velocity of the WG approximation has been proved for the L2 norm and the H1 norm. The optimal-order error convergence has been proved for the pressure in the L2 norm. The theory has been validated by performing some numerical tests on triangular and tetrahedral meshes.Yan Yang is supported in part by the Program of Sichuan National Applied Mathematics Center, No. 2023-KFJJ-01-001
Ethnography in Motion, or Walking With WG Sebald
No full textIn fieldwork, the collection of qualitative empirical data is almost exclusively carried out on foot. When we study a ‘field’, it also suggests a terrain or an environment that we are meant to investigate. Yet the actual process of investigating something ‘on foot’, of walking, is seldom reflected on in any detail. The aim of this essay is to consider what this notion of investigating a field ‘on foot’ might mean for socio-legal scholarship. It focuses on the ways in which author WG Sebald’s walks in the Suffolk landscape, as portrayed in his novel The Rings of Saturn (1995), provide sensory stimuli for his meditations on themes such as the passing of time and identity. Sebald’s notion of walking is traced Claude Lévi-Strauss’ idea of bricolage as a form of ‘patchwork’ knowledge formation, but the hybridity of Sebald’s resulting ‘fieldnotes’ suggest a closer affiliation with Walter Benjamin’s notion of constellation.Peer reviewe
Tunable mid-infrared photodetectors employing Stark shifts of intersubband transitions in In0.05Ga0.95As/Al0.32Ga0.68As/Al0.45Ga0.55As asymmetric step quantum wells
No full textTunable mid-infrared (3-5 mum) photodetectors made of In0.05Ga0.95As/Al0.32Ga0.68As/Al0.45Ga0.55As asymmetric step multiple quantum wells are reported. The detectors exhibit photovoltaic-type photocurrent response with the peak wavelengths modulated by an applied bias in the 3-5.3 mum infrared atmospheric transmission window. The bias-controlled modulation of the peak wavelength of the main response is due to the Stark shifts of the intersubband transitions from the ground states to the first excited states in the quantum wells. By expanding the electron wavefunction in terms of the normalized plane wave basis within the framework of the effective-mass envelope-function approximation, a theoretical calculation of the linear Stark effects of the intersubband transitions between the ground and the first excited states in the asymmetric step wells is carried out and the results agree well with experimental measurements. The key features of the photodetectors, including the photocurrent response, dark current, and black-body detectivity, which is about 1.0 x 10(10) cm Hz(1/2)/W at 77 K under a bias of +/-7 V, are close to the requirements for practical applications. (C) 2004 Elsevier Ltd. All rights reserved.Physics, Condensed MatterSCI(E)EI3ARTICLE1-225-343
Problemy w przebiegu pierwszej fazy rozwoju wg koncepcji Erika Eriksona u dziecka niewidomego
No full textJoanna Gładyszewska-Cylulko, Problemy w przebiegu pierwszej fazy rozwoju wg koncepcji Erika Eriksona u dziecka niewidomego [Problems of the first stage of psychosocial development according to Erik Erikson in a blind child]. Interdyscyplinarne Konteksty Pedagogiki Specjalnej, nr 22, Poznań 2018. Pp. 139-166. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.22.08
Erik H. Erikson, the author of the theory of psychosocial development, claimed that during their life from birth to death, every human being experiences eight developmental crises. Every time, at each stage there are two polar opposites, two conflicting values. To overcome the crisis we must find an optimal balance between them. How we resolve the crises affects our integration and relations with others and ourselves. In the article the author concentrates on the first developmental stage, considered by many to be the most important one. Its two opposites are basic trust and basic mistrust, while the basic virtue is hope. Unfortunately, due to the lack of appropriate experiences, improper attitude of other people and various otherfactors, blind children already at this stage often fail to properly resolve the developmental crisis. In further part of the article the author discusses the causes of the problem and suggests how the disturbances at the first stage of development might be prevented.Joanna Gładyszewska-Cylulko, Problemy w przebiegu pierwszej fazy rozwoju wg koncepcji Erika Eriksona u dziecka niewidomego [Problems of the first stage of psychosocial development according to Erik Erikson in a blind child]. Interdyscyplinarne Konteksty Pedagogiki Specjalnej, nr 22, Poznań 2018. Pp. 139-166. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.22.08
Erik H. Erikson, the author of the theory of psychosocial development, claimed that during their life from birth to death, every human being experiences eight developmental crises. Every time, at each stage there are two polar opposites, two conflicting values. To overcome the crisis we must find an optimal balance between them. How we resolve the crises affects our integration and relations with others and ourselves. In the article the author concentrates on the first developmental stage, considered by many to be the most important one. Its two opposites are basic trust and basic mistrust, while the basic virtue is hope. Unfortunately, due to the lack of appropriate experiences, improper attitude of other people and various otherfactors, blind children already at this stage often fail to properly resolve the developmental crisis. In further part of the article the author discusses the causes of the problem and suggests how the disturbances at the first stage of development might be prevented
Generating Value from Government Data Using AI: An Exploratory Study
No full textOpen government data initiatives have gained popularity around the world. Artificial Intelligence (AI) has the potential to make better use of data. Combining the OGD and AI is crucial to generate more value from data. In this paper we investigate what kind of value was generated through AI and how. A context-input-process-output/outcome (CIPO) framework is developed to describe and compare three cases. The overview of cases shows the huge potential of AI, but it also suggests that AI is hardly used by the public to create value from open data. The objectives of the three cases are efficiency, innovation and crime prevention, whereas common open government objectives like transparency, accountability and participation are given less attention. By using AI, the risks of data privacy and arriving at biased or wrong conclusions become more prominent. With the rise of data collection from Internet of Things, complying with the 5-stars of Berners-Lee becomes more important. We recommend policy makers to stimulate AI projects contributing to the open government goals and ensure that open data meets the 5-star requirements.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Information and Communication Technolog
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