35,592 Hits in 3.6 sec

Comparative evaluation of 2D feature correspondence selection algorithms [article]

Chen Zhao, Jiaqi Yang, Yang Xiao, Zhiguo Cao
2019 arXiv   pre-print
Correspondence selection aiming at seeking correct feature correspondences from raw feature matches is pivotal for a number of feature-matching-based tasks. Various 2D (image) correspondence selection algorithms have been presented with decades of progress. Unfortunately, the lack of an in-depth evaluation makes it difficult for developers to choose a proper algorithm given a specific application. This paper fills this gap by evaluating eight 2D correspondence selection algorithms ranging from
more » ... lassical methods to the most recent ones on four standard datasets. The diversity of experimental datasets brings various nuisances including zoom, rotation, blur, viewpoint change, JPEG compression, light change, different rendering styles and multi-structures for comprehensive test. To further create different distributions of initial matches, a set of combinations of detector and descriptor is also taken into consideration. We measure the quality of a correspondence selection algorithm from four perspectives, i.e., precision, recall, F-measure and efficiency. According to evaluation results, the current advantages and limitations of all considered algorithms are aggregately summarized which could be treated as a "user guide" for the following developers.
arXiv:1904.13383v1 fatcat:sak2p5onancqra4qjhvernvfkm

Two new triterpenoids with antimicrobial activity from the leaves and twigs of Orophea yunnanensis

Wei Zhao, Xiao-Wei Gong, Yuan-Xing Duan, Ji Yang, Xia Wu, Xian-Jun Jiang, Xiao-Hua Xu, Yong-Kuan Chen, Liu Yang, Fei Wang, Xiao-Long Yang
2018 Figshare  
Two new triterpenoids, 3-O-(4',5'-dihydroxybenzoyl)-lup-20(29)-en (1) and 3-O-(6'-desmethysyringyl)-13α-methyl-27-norolean-14-en-3β-ol (2), were isolated from the leaves and twigs of Orophea yunnanensis. Their structures were identified by extensive spectroscopic experiments (NMR and MS) and comparison with literature data. Compounds 1 and 2 exhibited the moderate inhibitory activity against Sclerotinia sclerotiorum, Ceratocystis fimbriata and Verticillium dahliae Kleb with MIC values from 50
more » ... 25 μg/mL, and also displayed the weak activity selectively against tested bacteria strains with MIC values from 100 to 50 μg/mL.
doi:10.6084/m9.figshare.6462737 fatcat:rcwxypqh6ffrjemo3zbfkrv5va

Autonomous sensing the insulin peptide by an olfactory G protein coupled receptor modulates glucose metabolism [article]

Jie Cheng, Zhao Yang, Xiao-Yan Ge, Ming-Xin Gao, Ran Meng, Jing-Yu Lin, Zhao-Mei Tian, Yun-Fei Xu, Fan Yang, Jin-Peng Sun, Xiao Yu
2020 bioRxiv   pre-print
Along with functionally intact insulin, diabetes-associated insulin peptides are secreted by β cells(1-3). By screening the expression and functional characterization of olfactory receptors in pancreatic islets, we identified Olfr109 as the receptor to detect insulin peptides. Engagement of one insulin peptide, insB:9-23, with Olfr109 diminished insulin secretion through Gi-cAMP signalling and promoted macrophage proliferation. Remarkably, Olfr109 deficiency alleviated intra-islet inflammatory
more » ... esponses and improved glucose homeostasis in Akita- and HFD-fed mice. We further determined the binding mode between the insB:9-23 and Olfr109. A pepducin-based Olfr109 antagonist improved glucose homeostasis in diabetic and obese mouse models. Collectively, we found that pancreatic β cells use Olfr109 to autonomously detect self-secreted insulin peptides and this detection arrests insulin secretion and crosstalk with macrophages to increase intra-islet inflammation.
doi:10.1101/2020.12.18.423228 fatcat:vxbyav4bsrbfdcneaufgl273dm

Recent research progress of ferroelectric negative capacitance field effect transistors

Jun-Dong Chen, Wei-Hua Han, Chong Yang, Xiao-Song Zhao, Yang-Yan Guo, Xiao-Di Zhang, Fu-Hua Yang
2020 Wuli xuebao  
HfO 2 基铁电场效应晶体管读写电路的单粒子翻转效应模拟 Single-event-upset effect simulation of HfO 2 -based ferroelectric field effect transistor read and write circuits
doi:10.7498/aps.69.20200354 fatcat:stxvtl3uwneunazemgh4a4bcbq

Local Fractional Poisson and Laplace Equations with Applications to Electrostatics in Fractal Domain

Yang-Yang Li, Yang Zhao, Gong-Nan Xie, Dumitru Baleanu, Xiao-Jun Yang, Kai Zhao
2014 Advances in Mathematical Physics  
From the local fractional calculus viewpoint, Poisson and Laplace equations were presented in this paper. Their applications to the electrostatics in fractal media are discussed and their local forms in the Cantor-type cylindrical coordinates are also obtained.
doi:10.1155/2014/590574 fatcat:rqrsy3b3mvg7nkxiqqedp4s7we

Dirichlet Variational Autoencoder for Text Modeling [article]

Yijun Xiao, Tiancheng Zhao, William Yang Wang
2018 arXiv   pre-print
These efforts were mostly made by trying different neural structures Semeniuta et al., 2017) or modifying the objective functions (Bowman et al., 2015; Zhao et al., 2017 Zhao et al., , 2018 .  ...  ., 2016; Zhao et al., 2017) . One key issue when training VAE on text data is a phenomenon called Kullback-Leibler (KL) divergence vanishing.  ... 
arXiv:1811.00135v1 fatcat:unjwxoejyfg7rpac7hcfrd454m

Facial Skin Aging Stages in Chinese Females

Xiao-xiao Yang, Meng-meng Zhao, Yi-fan He, Hong Meng, Qing-yang Meng, Qiao-yin Shi, Fan Yi
2022 Frontiers in Medicine  
BackgroundFacial skin is exposed to the environment, which marks it with obvious signs of aging. Based on multi-dimensional non-invasive evaluation data, female facial skin can be characterized in detail. However, there are few studies on the general aging rules of facial skin. Most skin aging studies divide the ages into 5–10-year intervals, so they have lacked dynamic matching with facial skin aging.AimTo explore facial skin aging rules, discuss the main parameters of facial skin aging,
more » ... e an unequal-distance aging division method based on the main skin parameters, and study the skin characteristics of Chinese women of different aging stages.MethodsWe comprehensively described the skin status as 24 non-invasive skin parameters belonging to five dimensions: skin wrinkles, texture, stain, color and barrier function. We performed polynomial fitting on the 21 skin parameters that were significantly correlated with age and derived the rules of aging in the different dimensions. Based on the wrinkle dimension, the facial skin aging process was divided into four stages, and the skin characteristics of the different stages were compared.ResultsSkin wrinkles increased, texture deteriorated, acne decreased, pigment spots increased, skin tone darkened, and sebum secretion decreased with age, according to the polynomial fitting. The aging stage was divided into an incubation period (18–30 years old), an aging occurrence period (31–42 years old), a rapid aging period (43–47 years old), and a stable aging period (48–60 years old), according to the wrinkles. Different aging stages had different skin characteristics.ConclusionThe incubation period is the critical period for the appearance of skin stains; the skin texture gradually deteriorates during the aging occurrence period; the rapid aging period is a critical period for the aging of skin parameters; skin status during the stable aging period is the worst.
doi:10.3389/fmed.2022.870926 pmid:35572984 pmcid:PMC9094048 fatcat:px5yqekqe5hqlehdpvuzeaju4y

Developing a DeSipher method for conformational change detection of membrane receptor complex at residue resolution [article]

Qi Liu, Qing-tao He, Xiao-xuan Lyu, Fan Yang, Zhong-liang Zhu, Peng Xiao, Zhao Yang, Feng Zhang, Zhao-ya Yang, Xiao-yan Wang, Peng Sun, Qian-wen Wang (+20 others)
2019 bioRxiv   pre-print
Yang F, et al. (2018) Allosteric mechanisms underlie GPCR signaling to SH3-domain 578 proteins through arrestin. Nat Chem Biol 14(9):876-886. 579 7.  ...  Yang F, et al. (2015) Phospho-selective mechanisms of arrestin conformations and 575 functions revealed by unnatural amino acid incorporation and (19)F-NMR. Nat 576 Commun 6:8202. 577 6.  ... 
doi:10.1101/2019.12.18.873729 fatcat:n2ljmnkrprhrzfrt43vxhs6tzi

Mammalian WTAP is a regulatory subunit of the RNA N6-methyladenosine methyltransferase

Xiao-Li Ping, Bao-Fa Sun, Lu Wang, Wen Xiao, Xin Yang, Wen-Jia Wang, Samir Adhikari, Yue Shi, Ying Lv, Yu-Sheng Chen, Xu Zhao, Ang Li (+13 others)
2014 Cell Research  
The methyltransferase like 3 (METTL3)-containing methyltransferase complex catalyzes the N6-methyladenosine (m6A) formation, a novel epitranscriptomic marker; however, the nature of this complex remains largely unknown. Here we report two new components of the human m6A methyltransferase complex, Wilms' tumor 1-associating protein (WTAP) and methyltransferase like 14 (METTL14). WTAP interacts with METTL3 and METTL14, and is required for their localization into nuclear speckles enriched with
more » ... mRNA processing factors and for catalytic activity of the m6A methyltransferase in vivo. The majority of RNAs bound by WTAP and METTL3 in vivo represent mRNAs containing the consensus m6A motif. In the absence of WTAP, the RNA-binding capability of METTL3 is strongly reduced, suggesting that WTAP may function to regulate recruitment of the m6A methyltransferase complex to mRNA targets. Furthermore, transcriptomic analyses in combination with photoactivatable-ribonucleoside-enhanced crosslinking and immunoprecipitation (PAR-CLIP) illustrate that WTAP and METTL3 regulate expression and alternative splicing of genes involved in transcription and RNA processing. Morpholino-mediated knockdown targeting WTAP and/or METTL3 in zebrafish embryos caused tissue differentiation defects and increased apoptosis. These findings provide strong evidence that WTAP may function as a regulatory subunit in the m6A methyltransferase complex and play a critical role in epitranscriptomic regulation of RNA metabolism.
doi:10.1038/cr.2014.3 pmid:24407421 pmcid:PMC3915904 fatcat:k4qltyfgerazleqamsjtzmj7bm

Quantum Causal Influence [article]

Jordan Cotler, Xizhi Han, Xiao-Liang Qi, Zhao Yang
2018 arXiv   pre-print
We introduce a framework to study the emergence of time and causal structure in quantum many-body systems. In doing so, we consider quantum states which encode spacetime dynamics, and develop information theoretic tools to extract the causal relationships between putative spacetime subsystems. Our analysis reveals a quantum generalization of the thermodynamic arrow of time and begins to explore the roles of entanglement, scrambling and quantum error correction in the emergence of spacetime. For
more » ... instance, exotic causal relationships can arise due to dynamically induced quantum error correction in spacetime: there can exist a spatial region in the past which does not causally influence any small spatial regions in the future, but yet it causally influences the union of several small spatial regions in the future. We provide examples of quantum causal influence in Hamiltonian evolution, quantum error correction codes, quantum teleportation, holographic tensor networks, the final state projection model of black holes, and many other systems. We find that the quantum causal influence provides a unifying perspective on spacetime correlations in these seemingly distinct settings. In addition, we prove a variety of general structural results and discuss the relation of quantum causal influence to spacetime quantum entropies.
arXiv:1811.05485v1 fatcat:fpf7q3kio5gdpamq4vk2g2xycy

Hetero-Center Loss for Cross-Modality Person Re-Identification [article]

Yuanxin Zhu, Zhao Yang, Li Wang, Sai Zhao, Xiao Hu, Dapeng Tao
2019 arXiv   pre-print
In addition, the spectrum between IR and *Corresponding author Email (Zhao Yang) RGB images is different.  ... 
arXiv:1910.09830v1 fatcat:tqfjgf3tzbgyjgz4zgp5oliwty

Species-dependent neuropathology in transgenic SOD1 pigs

Huaqiang Yang, Guohao Wang, Haitao Sun, Runzhe Shu, Tao Liu, Chuan-En Wang, Zhaoming Liu, Yu Zhao, Bentian Zhao, Zhen Ouyang, Dongshan Yang, Jiao Huang (+6 others)
2014 Cell Research  
Mutant SOD1 transgenic rodent models are by far the most widely used animal models of ALS and have given | Cell Research Huaqiang Yang et al. 465 npg us important insights into  ... | Cell Research Huaqiang Yang et al. 467 npg 1B ) | Cell Research HuaqiangYang et al. 479 npg nobenzidine (Vector Laboratories, Burlingame, CA,  ... 
doi:10.1038/cr.2014.25 pmid:24577199 pmcid:PMC3975503 fatcat:bfgxzkq67jcdtohlcsyna6bili

Effects of long-term hydrogen intervention on the physiological function of rats

Zhi-ming Xun, Qing-hui Zhao, Yan Zhang, Fang-di Ju, Jin He, Ting-ting Yao, Xiao-kang Zhang, Yang Yi, Sheng-nan Ma, Peng-xiang Zhao, Xiao-yan Jin, Ying-xian Li (+3 others)
2020 Scientific Reports  
The potential therapeutic effects of molecular hydrogen (H2) have now been confirmed in various human and animal-disease models. However, the effects of H2 on the physiological function in a normal state have been largely neglected. Hydrogen-rich water (HRW) intake and hydrogen inhalation (HI) are the most common used methods for hydrogen administration, the difference in the effects between HRW intake and HI remains elusive. In the present study, the body weight and 13 serum biochemical
more » ... ers were monitored during the six-month hydrogen intervention, all these parameters were significantly altered by oral intake of HRW or HI. Among the 13 parameters, the most striking alterations induced by hydrogen treatment were observed in serum myocardial enzymes spectrum. The results also showed that the changes in these parameters occurred at different time points, and the alterations in most of the parameters were much more significant in HI than HRW. The results of this study provides the basic data for the mechanism research and application of molecular hydrogen in the future.
doi:10.1038/s41598-020-75492-w pmid:33116163 fatcat:ulkvnzhrkfdovliw72xo47l7ia

Neuromuscular control pattern in rhesus monkeys during bipedal walking

Rui-Han WEI, Can ZHAO, Jia-Sheng RAO, Wen ZHAO, Yan-Qin WEI, Xia ZHOU, Peng-Yu TIAN, Ruo-Xi LIU, Zhao-Yang YANG, Xiao-Guang LI
2019 Experimental animals  
Rao, J.S., Liu, Z., Zhao, C., Wei, R.H., Zhao, W., Yang, Z.Y. and Li, X.G. 2016.  ...  Wei, R.H., Zhao, C., Rao, J.S., Zhao, W., Zhou, X., Tian, P.Y., Yang, Z.Y. and Li, X.G. 2018. The kinematic 432 recovery process of rhesus monkeys after spinal cord injury. Exp. Anim.  ... 
doi:10.1538/expanim.18-0180 fatcat:aosgl2fvtbdkvijrjsbqvx6iya

Space-time random tensor networks and holographic duality [article]

Xiao-Liang Qi, Zhao Yang
2018 arXiv   pre-print
In this paper we propose a space-time random tensor network approach for understanding holographic duality. Using tensor networks with random link projections, we define boundary theories with interesting holographic properties, such as the Renyi entropies satisfying the covariant Hubeny-Rangamani-Takayanagi formula, and operator correspondence with local reconstruction properties. We also investigate the unitarity of boundary theory in spacetime geometries with Lorenzian signature. Compared
more » ... h the spatial random tensor networks, the space-time generalization does not require a particular time slicing, and provides a more covariant family of microscopic models that may help us to understand holographic duality.
arXiv:1801.05289v1 fatcat:ey2if4rawvcwtgmo4tru4gtu54
« Previous Showing results 1 — 15 out of 35,592 results