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131 results on '"Du Yusong"'

1. An Efficient Threshold Ring Signature from G+G Identification Protocol

Author

Wu, Chunhui, Jiang, Siwei, Zhang, Fangguo, Du, Yusong, Lin, Qiping, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Chen, Xiaofeng, editor, and Huang, Xinyi, editor

Published
2025
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11. An Improved Exact Sampling Algorithm for the Standard Normal Distribution

Author

Du, Yusong, Fan, Baoying, and Wei, Baodian

Subjects
Computer Science - Data Structures and Algorithms, 65C10, G.3.10
Abstract

In 2016, Karney proposed an exact sampling algorithm for the standard normal distribution. In this paper, we study the computational complexity of this algorithm under the random deviate model. Specifically, Karney's algorithm requires the access to an infinite sequence of independently and uniformly random deviates over the range (0,1). We give an estimate of the expected number of uniform deviates used by this algorithm until outputting a sample value, and present an improved algorithm with lower uniform deviate consumption. The experimental results also shows that our improved algorithm has better performance than Karney's algorithm.

Published
2020

18. Arbitrary-Centered Discrete Gaussian Sampling over the Integers

Author

Du, Yusong, Fan, Baoying, Wei, Baodian, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liu, Joseph K., editor, and Cui, Hui, editor

Published
2020
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21. Two Aggregation‐Induced Emission Actives Triphenylamine‐Based Salicylaldimine Compounds for Latent Fingerprints Detection.

Author

Du, Yusong, Tian, Jiazhuang, Jiang, Xiaozhou, Chen, Chunlin, Yang, Yanhua, and Gao, Shulin

Subjects
*FORENSIC fingerprinting, *INTRAMOLECULAR charge transfer, *CARBAZOLE, *FLUORESCENCE, *MOIETIES (Chemistry), *TRIPHENYLAMINE
Abstract

To further explore the candidate materials for latent fingerprints detection, two triphenylamine‐based salicylaldimine compounds containing phenoxazine moiety (TPA‐PXZ) and carbazole unit (TPA‐Cz) were designed and successfully synthesized, respectively. They exhibited intramolecular charge transfer transitions and aggregation‐induced emission properties. Based on quantum chemical calculation results, it was found that compounds TPA‐Cz and TPA‐PXZ had twisted spatial configuration, which were responsible for aggregation‐induced emission. Meanwhile, the morphology of two compounds nano‐aggregates in the THF/water mixtures with 60 % and 80 % water content was tested. To our delight, the developers that prepared by compounds TPA‐Cz and TPA‐PXZ both were used for latent fingerprints detection on the surface of glasses, and they emitted purple fluorescence, as well as the distinct fingerprint imaging could be easily distinguished fingerprint level 1–3 details. We believe that TPA‐Cz and TPA‐PXZ both are the promising candidate for latent fingerprints detection. [ABSTRACT FROM AUTHOR]

Published
2024
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23. Boosting the Thermoelectric Properties of Ge0.94Sb0.06Te via Trojan Doping for High Output Power

Author

Jiang, Yuanxin, Zhang, Yu, Wang, Xiaoqiang, Chen, LeLe, Zhang, Jiye, Du, Yusong, Xing, Weiwei, Zhao, Jing-Tai, Li, Shuankui, and Guo, Kai

Abstract

GeTe stands as a promising lead-free medium-temperature thermoelectric material that has garnered considerable attention in recent years. Suppressing carrier concentration by aliovalent doping in GeTe-based thermoelectrics is the most common optimization strategy due to the intrinsically high Ge vacancy concentration. However, it inevitably results in a significant deterioration of carrier mobility, which limits further improvement of the zTvalue. Thus, an effective Trojan doping strategy via CuScTe2alloying is utilized to optimize carrier concentration without intensifying charge carrier scattering by increasing the solubility of Sc in the GeTe system. Because of the high doping efficiency of the Trojan doping strategy, optimized hole concentration and high mobility are obtained. Furthermore, CuScTe2alloying leads to band convergence in GeTe, increasing the effective mass m* in (Ge0.84Sb0.06Te0.9)(CuScTe2)0.05and thus significantly improving the Seebeck coefficient throughout the measured temperature range. Meanwhile, the achievement of the ultralow lattice thermal conductivity (κL∼ 0.34 W m–1K–1) at 623 K is attributed to dense point defects with mass/strain-field fluctuations. Ultimately, the (Ge0.84Sb0.06Te0.9)(CuScTe2)0.05sample exhibits a desirable thermoelectric performance of zTmax∼ 1.81 at 623 K and zTave∼ 1.01 between 300 and 723 K. This study showcases an effective doping strategy for enhancing the thermoelectric properties of GeTe-based materials by decoupling phonon and carrier scattering.

Published
2024
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25. Fair Electronic Voting via Bitcoin Deposits

Author

Wu, Xijuan, Wei, Baodian, Tian, Haibo, Du, Yusong, Ma, Xiao, Barbosa, Simone Diniz Junqueira, Series Editor, Filipe, Joaquim, Series Editor, Kotenko, Igor, Series Editor, Sivalingam, Krishna M., Series Editor, Washio, Takashi, Series Editor, Yuan, Junsong, Series Editor, Zhou, Lizhu, Series Editor, Yuan, Hanning, editor, Geng, Jing, editor, Liu, Chuanlu, editor, Bian, Fuling, editor, and Surapunt, Tisinee, editor

Published
2018
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28. A Note on the Optimal Immunity of Boolean Functions Against Fast Algebraic Attacks

Author

Shen, Jing, Du, Yusong, Chen, Phoebe, Series editor, Du, Xiaoyong, Series editor, Filipe, Joaquim, Series editor, Kara, Orhun, Series editor, Kotenko, Igor, Series editor, Liu, Ting, Series editor, Sivalingam, Krishna M., Series editor, Washio, Takashi, Series editor, Giri, Debasis, editor, Mohapatra, Ram N., editor, Begehr, Heinrich, editor, and Obaidat, Mohammad S., editor

Published
2017
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29. On Computing the Immunity of Boolean Power Functions Against Fast Algebraic Attacks

Author

Du, Yusong, Wei, Baodian, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Hong, Seokhie, editor, and Park, Jong Hwan, editor

Published
2017
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32. Identity Based Threshold Ring Signature from Lattices

Author

Wei, Baodian, Du, Yusong, Zhang, Huang, Zhang, Fangguo, Tian, Haibo, Gao, Chongzhi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Au, Man Ho, editor, Carminati, Barbara, editor, and Kuo, C.-C. Jay, editor

Published
2014
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33. A Password Authentication Scheme against Smart Card Security Breach

Author

Shen, Jing, Du, Yusong, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Liu, Baoxiang, editor, Ma, Maode, editor, and Chang, Jincai, editor

Published
2012
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34. On the Resistance of Boolean Functions against Fast Algebraic Attacks

Author

Du, Yusong, Zhang, Fangguo, Liu, Meicheng, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Kim, Howon, editor

Published
2012
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35. Non-delegatable Strong Designated Verifier Signature on Elliptic Curves

Author

Tian, Haibo, Chen, Xiaofeng, Jiang, Zhengtao, Du, Yusong, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Kim, Howon, editor

Published
2012
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36. Two Applications of an Incomplete Additive Character Sum to Estimating Nonlinearity of Boolean Functions

Author

Du, Yusong, Zhang, Fangguo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Qing, Sihan, editor, Susilo, Willy, editor, Wang, Guilin, editor, and Liu, Dongmei, editor

Published
2011
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37. Finding More Boolean Functions with Maximum Algebraic Immunity Based on Univariate Polynomial Representation

Author

Du, Yusong, Zhang, Fangguo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Parampalli, Udaya, editor, and Hawkes, Philip, editor

Published
2011
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39. Effect of Film Thickness on the Microstructure and Dielectric and Ferroelectric Properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 Films by Pulsed Laser Deposition.

Author

Li, Lin, Zhou, Changrong, Yu, Dongyan, Zheng, Yuanlei, Du, Yusong, Ma, Lei, Zhao, Jingtai, and Rao, Guanghui

Abstract

Lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNT-6BT) films are deposited on Pt(111)/Ti/SiO2/Si(100) substrates for various thicknesses by pulsed laser deposition. The effects of thickness on the microstructure, Raman spectra, dielectric behavior, and ferroelectric properties are investigated in detail. The BNT-6BT films with a polycrystalline structure, as well as an increase in grain size and crystallinity, a decrease in strain, and the appearance of columnar crystals with increasing film thickness are confirmed by x-ray diffraction and field emission scanning electron microscopy. Obvious aging behavior with an abnormal double-butterfly shape of dielectric constant–electric field curves is observed in aged BNT-6BT films. Both the dielectric tunability and dielectric constant increase with increasing film thickness, with 950 nm film exhibiting the highest dielectric tunability of 36.7% and dielectric constant and loss of 572 and 0.032 at 1 kHz, respectively. Moreover, an increase in the maximum polarization (Pmax) and remanent polarization (Pr) with the increase in film thickness is also observed. The enhanced dielectric and ferroelectric properties of BNT-6BT films are strongly depended on thickness, which suggest the potential application of BNT-6BT films in film tunable capacitors. [ABSTRACT FROM AUTHOR]

Published
2023
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44. Thickness-dependent ferromagnetic, ferroelectric, and energy storage performances of (Bi0.5Na0.5)0.94Ba0.06TiO3/La0.67Sr0.33MnO3 composite films by pulsed laser deposition

Author

Li, Lin, Zhou, Changrong, Zheng, Yuanlei, Du, Yusong, Yuan, Changlai, Ma, Lei, Zhao, Jingtai, and Rao, Guanghui

Subjects
PULSED laser deposition, ENERGY storage, STRAINS & stresses (Mechanics), ENERGY density, HYSTERESIS loop, BARIUM titanate
Abstract

Multiferroic composite films based on ferroelectric (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNT-6BT) and ferromagnetic La0.67Sr0.33MnO3 (LSMO) were fabricated on Pt(111)/Ti/SiO2/Si(100) substrates by pulsed laser deposition. The effects of LSMO thickness on microstructure, magnetic characteristics, dielectric behavior, and energy storage performances have been investigated in detail. Compared with the pure BNT-6BT film, BNT-6BT/LSMO(t) composite films with polycrystalline structure exhibit larger dielectric constant, slimmer hysteresis loop, and lower remnant polarization. Meanwhile, the magnetization and polarization of composite films weaken with the increase of LSMO thickness due to the influence of crystalline size and the strain gradient field in the films induced by lattice mismatch. Optimized saturation magnetization of 120 emu/cm3 at 300 K for BNT-6BT/LSMO(200 nm) film and energy storage density and efficiency under 400 kV/cm of 4.05 J/cm3 and 69.8% for BNT-6BT/LSMO(400 nm) film are obtained, respectively. In addition, BNT-6BT/LSMO(400 nm) film manifests superior frequency stability (500-10 k Hz) and strong anti-fatigue stabilities (108 cycles). The results provide an effective way to systematically design multifunctional film capacitors. [ABSTRACT FROM AUTHOR]

Published
2023
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