scispace - formally typeset
Search or ask a question
Institution

Henan Normal University

EducationXinxiang, China
About: Henan Normal University is a education organization based out in Xinxiang, China. It is known for research contribution in the topics: Catalysis & Ionic liquid. The organization has 10863 authors who have published 11077 publications receiving 166773 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: This paper confirms that the use of flash successfully improves face liveness detection in terms of accuracy, robustness, and running time.
Abstract: Face recognition technique has been widely applied to personal identification systems due to its satisfying performance. However, its security may be a crucial issue, since many studies have shown that face recognition systems may be vulnerable in an adversarial environment, in which an adversary can camouflage as a legitimate user in order to mislead the system. Although face liveness detection methods have been proposed to distinguish real and fake faces, they are either time-consuming, costly, or sensitive to noise and illumination. This paper proposes a face liveness detection method with flash against 2D spoofing attack. Flash not only can enhance the differentiation between legitimate and illegitimate users, but it also reduces the influence of environmental factors. Two images are taken from a subject, one with flash and another without flash. Four texture and 2D structure descriptors with low computational complexity are used to capture information of the two images in our model. Advantages of our method include low installation cost of flash and no user cooperation required. A data set of 50 subjects collected under different scenarios is used in the experiments to evaluate the proposed method. The experimental results indicate that the proposed model performs better than existing liveness detection methods in different environmental scenarios. This paper confirms that the use of flash successfully improves face liveness detection in terms of accuracy, robustness, and running time.

58 citations

Journal ArticleDOI
M. Ablikim, M. N. Achasov1, S. Ahmed, Xiaocong Ai  +424 moreInstitutions (53)
TL;DR: In this article, the first measurement of the absolute branching fraction for Λ c + → Λ μ + ν μ was reported based on a sample of e + e − annihilation data produced at a center-of-mass energy s = 4.6 ÂGeV, collected with the BESIII detector at BEPCII storage rings.

58 citations

Journal ArticleDOI
TL;DR: It has been shown that the carbonyl stretch bands for PC andDEC are very sensitive to the interaction between Li+ and the solvent molecules, indicating a strong interaction of Li+ with PC and DEC through the oxygen group of PC and both oxygen and ether oxygen atoms of DEC.

58 citations

Journal ArticleDOI
TL;DR: The results showed that pure In2O3 had poor selectivity, while the sensors doped with 5.5.wt.% Eu 2O3, 5.1.% Gd 2O 3, and 5.2.% Ho2O 3 increased the gas-sensing performance towards H2S as a reducing gas, but decreased gas towards Cl2 as an oxidizing gas at 195°C as mentioned in this paper.
Abstract: The powders of pure In2O3 and Eu3+, Gd3+, Ho3+-doped In2O3 with the structure of bixbyite-type were synthesized by a sol–gel method in the citric acid system. The structure and crystal phase of the powders were characterized by using an X-ray diffractometer. The gas sensing characteristics were obtained by measuring the response magnitude as a function of various controlling factors like dopant, operating temperature, concentrations of the test gases and the response time. The results showed that pure In2O3 had poor selectivity, while the In2O3 sensors doped with 5 wt.% Eu2O3, 5 wt.% Gd2O3, and 5 wt.% Ho2O3 increased the gas-sensing performance towards H2S as a reducing gas, but decreased gas towards Cl2 as an oxidizing gas at 195 °C. Namely, doping of the rare earth oxides remarkably improved the selectivity for H2S. In addition, it was found that among the dopants, 5 wt.% Ho2O3 gave the highest the response value, selectivity, stability and the most excellent response and recovery characteristics to H2S at 195 °C. Thus, the Ho2O3-doped In2O3 is a promising candidate for detection of H2S in environments.

58 citations


Authors

Showing all 10953 results

NameH-indexPapersCitations
Hua Zhang1631503116769
Jie Wu112153756708
Peng Wang108167254529
Lei Liu98204151163
Lixia Zhang9335147817
Zhongwei Chen9251133700
Wei Chen9093835799
Zhiguo Ding8881735162
Xiaolong Wang8196631455
Junhua Li7748021626
Jiujun Zhang7627639624
Lei Liao7527618815
Peng Xu75115125005
Wei Wang75116723558
Tony D. James7343521605
Network Information
Related Institutions (5)
Nankai University
51.8K papers, 1.1M citations

93% related

Xiamen University
54.4K papers, 1M citations

90% related

Dalian University of Technology
71.9K papers, 1.1M citations

89% related

Nanjing University
105.5K papers, 2.2M citations

89% related

Chinese Academy of Sciences
634.8K papers, 14.8M citations

89% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202349
2022173
20211,281
20201,042
2019987
2018818