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IEEE International Conference on Cyber Security and Cloud Computing (CSCloud)

作者： Jingjing Zhang Lin Yang Xianming Gao Qiang Wang College of Command and Control Engineering Army Engineering University of PLA Nanjing China National Key Laboratory of Science and Technology on Information System Security Chinese Academy of Military Science Beijing China Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen China

ISBN: (数字)9781728165509

ISBN: (纸本)9781728165516

This paper presents a formal analysis of the QUIC protocol. This newly proposed protocol is currently under the process of standardization, and it is still unknown whether the proposed protocol provides the claimed security guarantees. To fill this gap, we model the QUIC handshake protocol in the applied pi calculus and perform a comprehensive formal analysis using ProVerif. To the best of our knowledge, this is the first thorough study on the formal analysis of QUIC handshake protocol.

关键词： Security protocol QUIC Formal verification ProVerif formal analysis Formal verification Handshake Protocol pi calculus

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Structure from motion-convolutional neural network model (SfM-CNN) achieved accurate portable Chinese dietary chemical composition estimation for dietary recall

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Food chemistry 2025年 489卷 144908页

作者： Peihua Ma Hsuan Chih Hong Xiaoxue Jia Cheng Jan Chi Ning Xiao Bei Fan Fengzhong Wang Cheng-I Wei Institute of Food Science and Technology Chinese Academy of Agricultural Sciences Key Laboratory of Agro-products Processing Ministry of Agriculture and Rural Affairs Beijing 100193 China Department of Nutrition and Food Science College of Agriculture and Natural Resources University of Maryland College Park MD 20742 United States. Porcupic Limited Aurora ON L4G7H7 Canada. Healthy Lifestyle Medicine Center State Key Laboratory of Cardiovascular Disease Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China. Institute of Food Science and Technology Chinese Academy of Agricultural Sciences Key Laboratory of Agro-products Processing Ministry of Agriculture and Rural Affairs Beijing 100193 China. Department of Nutrition and Food Science College of Agriculture and Natural Resources University of Maryland College Park MD 20742 United States. Electronic address: wei@umd.edu.

Accurately estimating the chemical composition of dietary intake is essential for health and nutrition management, especially in regions with complex culinary diversity like China. This study introduces a novel AI-driven solution using a Structure from Motion-Convolutional Neural Network (SfM-CNN) model to automate chemical composition analysis of Chinese food. By integrating advanced 3D reconstruction techniques with deep learning, specifically the Scale-Invariant Feature Transform (SIFT) algorithm, we achieved superior feature extraction and food volume estimation with less than 4 % error. Our model, trained on the newly developed ChineseDish-100 dataset, demonstrated an R of 0.949 for carbohydrate content estimation using the SIFT-ResNet50 architecture. The model's interpretability was enhanced through visualizations, facilitating parameter optimization and reliable chemical composition estimation. These results underscore the potential of AI-powered models in providing efficient, accurate, and culturally relevant dietary analysis tools, marking a significant advancement for nutritional science, food chemistry, and public health initiatives in culturally diverse regions.

关键词： Chemical analysis Convolutional neural network Dietary recall Structure from motion

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The ALMA-ATOMS survey: A sample of weak hot core candidates identified through line stacking

arXiv

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arXiv 2025年

作者： Li, Zi-Yang Liu, Xunchuan Liu, Tie Qin, Sheng-Li Goldsmith, Paul F. García, Pablo Peng, Yaping Chen, Li Jiao, Yunfan Kou, Zhiping Li, Chuanshou JiahangZou Tang, Mengyao Li, Shanghuo Liu, Meizhu Garay, Guido Xu, Fengwei Jiao, Wenyu Luo, Qiu-Yi Zhang, Suinan Gu, Qi-Lao Mai, Xiaofeng Zhang, Yan-Kun Weng, Jixiang Lee, Chang Won Sanhueza, Patricio Dib, Sami Das, Swagat R. Tang, Xindi Bronfman, Leonardo Gorai, Prasanta Tatematsu, Ken'ichi Liu, Hong-Li Yang, Dongting Zhang, Zhenying Shen, Xianjin School of Physics and Astronomy Yunnan University Kunming650091 China Shanghai Astronomical Observatory Chinese Academy of Sciences 80 Nandan Road Shanghai200030 China Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States Chinese Academy of Sciences South America Center for Astronomy National Astronomical Observatories CAS Beijing100101 China Instituto de Astronomía Universidad Católica del Norte Av. Angamos 0610 Antofagasta Chile Department of Physics Faculty of Science Kunming University of Science and Technology Kunming650500 China Xinjiang Astronomical Observatory Chinese Academy of Sciences Urumqi830011 China University of Chinese Academy of Sciences Beijing100049 China Institute of Astrophysics School of Physics and Electronical Science Chuxiong Normal University Chuxiong675000 China I. Physikalisches Institut Universität zu Köln Zülpicher Straße 77 Köln50937 Germany Kavli Institute for Astronomy and Astrophysics Peking University 5 Yiheyuan Road Haidian District Beijing100871 China Center for Astrophysics Guangzhou University Guangzhou510006 China Departamento de Astronomía Universidad de Chile Las Condes Santiago7591245 Chile Key Laboratory of Radio Astronomy Chinese Academy of Sciences Urumqi830011 China Department of Earth and Planetary Sciences Institute of Science Tokyo Meguro Tokyo152-8551 Japan National Astronomical Observatory of Japan National Institutes of Natural Sciences 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Korea Astronomy and Space Science Institute 776 Daedeokdaero Yuseong-gu Daejeon34055 Korea Republic of 217 Gajeongro Yuseong-gu Daejeon34113 Korea Republic of Max Planck Institute for Astronomy Königstuhl 17 Heidelberg69117 Germany Rosseland Centre for Solar Physics University of Oslo PO Box 1029 Blindern Oslo0315 Norway Institute of Theoretical Astrophysics University of Oslo PO Box 1029 Blindern Oslo0315 Norway School of Astrono

Context. Hot cores represent critical astrophysical environments for high-mass star formation, distinguished by their rich spectra of organic molecular emission lines. Nevertheless, comprehensive statistical analyses of extensive hot core samples remain relatively scarce in current astronomical research. Aims. We aim to utilize high-angular resolution molecular line data from the Atacama Large Millimeter and Submillimeter Array (ALMA) to identify hot cores, with a particular focus on weak-emission candidates, and to provide one of the largest samples of hot core candidates to date. Methods. We propose to use spectral stacking and imaging techniques of complex organic molecules (COMs) in the ALMA-ATOMS survey, including line identification & weights, segmentation of line datacubes, resampling, stacking and normalization, moment 0 maps, and data analysis, to search for hot core candidates. The molecules involved include CH3OH, CH3OCHO, C2H5CN, C2H5OH, CH3OCH3, CH3COCH3, and CH3CHO. We classify cores with dense emission of CH3OH and at least one molecule from the other six molecules as hot core candidates. Results. In addition to the existing sample of 60 strong hot cores from the ALMA-ATOMS survey, we have detected 40 new weak candidates through stacking. All hot core candidates display compact emission from at least one of the other six COM species. For the strong sample, the stacking method provides molecular column density estimates that are consistent with previous fitting results. For the newly identified weak candidates, all species except CH3CHO show compact emission in the stacked image, which cannot be fully resolved spatially. These weak candidates exhibit column densities of COMs that are approximately one order of magnitude lower than those of the strong sample. The entire hot core sample, including the weak candidates, reveals tight correlations between the compact emission of CH3OH and other COM species, suggesting they may share a similar chemical envir

关键词： Cosmology

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Learning category-level implicit 3D rotation representations for 6D pose estimation from RGB Images

Learning category-level implicit 3D rotation representations...

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2019 IEEE International Conference on Robotics and Biomimetics, ROBIO 2019

作者： Li, Xiaocan Cai, Yinghao Wang, Shuo Lu, Tao Chinese Academy of Sciences State Key Laboratory of Management and Control for Complex Systems Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences Shanghai200031 China

ISBN: (纸本)9781728163215

We exploit the embedding ability of a de-noising autoencoder for an implicit 3D rotation representation learning at the category level. Contrast to the exact 3D reconstruction model of each instance-level physical object, we leverage the inexact CAD/Reconstruction models of an object as the representative model for some category. Under our assumptions that objects within the same category share resemble geometry, we train a de-noising autoencoder on synthetic 3D views of category-level objects to extract the homogenous features at the bottleneck layer. The latent representation is agnostic not only to heterogeneous textures, colors, and illuminations, but also ambiguous pose caused by object symmetry. To extend the instance-level 3D translation estimation to the category level, we considered the 3D diagonal length ratio between the source and target object. We achieved a frame rate of 17Hz. © 2019 IEEE.

关键词： Object detection

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Petrophysical analysis and hydrocarbon potential of the lower Cretaceous Yageliemu Formation in Yakela gas condensate field, Kuqa Depression of Tarim Basin, China

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Geosystems and Geoenvironment 2022年第4期1卷

作者： Hussain, Wakeel Ali, Nafees Sadaf, Rakhshanda Hu, Chuanyu Nykilla, Edwin E. Ullah, Arif Iqbal, Sayed Muhammad Hussain, Altaf Hussain, Sadam Department of Geological Resources and Engineering Faculty of Engineering China University of Geosciences Wuhan 430074 China Department of Petroleum Engineering Faculty of Earth Resources China University of Geosciences Wuhan 430074 China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China University of Chinese Academy of Sciences Beijing 100049 China Department of Geology Federal Urdu University of Arts Science & Technology Karachi Pakistan

The present study based on petrophysical computations assess the conventional fuel resources of the Yageliemu Formation. The Yageliemu Formation was evaluated using log data from four wells (YK19, YK20, YK21, and YK32) and observed over the entire reservoir interval. Yageliemu Formation originates from the Lower Cretaceous reservoir, which is located in the Yakela gas condensate field, Kuqa Depression of Tarim Basin China. The studied gas bearing zones are primarily composed of sandstone, with small amounts of shale and clay contents. The petrophysical properties of the gas-bearing zones were carefully examined, which are rated to be better quality sand layers with average effective porosities varying from 7 to 10%, permeability varying from 3 to 8.6 mD, average water saturation values ranging from 43 to 59%, and the average range of gas saturation is 40–57%. The Yageliemu Formation cutoff outcomes for shale volume (Vsh), effective porosity, water saturation, and permeability were characterized at 40% and 5%, 65%, and 0.1 mD, respectively. Thomas Stieber model was used to successfully identify shale structural behavior in reservoirs and it revealed that the dominant shale is mainly laminated with a minor volume of structural and dispersive shale. Lithofacies and axial variations of reservoir properties are assessed by constructing self-organizing maps, isoparametric maps of the petrophysical properties, and litho-saturation cross-plots, respectively. The reservoir characteristics of the Yageliemu Formation demonstrate that the prospective region for hydrocarbons accumulation trends is in the southwestern and northwestern parts of the research area. The study techniques can be used in the Tarim Basin and similar basins around the world to estimate the petrophysical properties of oil and gas wells and comprehend reservoir prospects. © 2022

关键词： Lower Cretaceous reservoir Petrophysical parameter Well log assessment Yageliemu Formation

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Aminoguanidinium-engineered crater morphology in nanofiltration membranes: Unraveling transport mechanisms and structure-dependent purification performance

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Chemical Engineering Journal 2025年 516卷

作者： Xiaozhen Lu Lin Wang Xuewu Zhu Liping Qiu Heng Liang Haiqing Chang Daliang Xu Xiaobin Tang Jiashuai Wei Bin Liu Hunan Engineering Research Center of Water Security Technology and Application College of Civil Engineering Hunan University Changsha 410082 China School of Municipal and Environmental Engineering Shandong Jianzhu University Jinan 250101 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin 150090 China MOE Key Laboratory of Deep Earth Science and Engineering College of Architecture and Environment Sichuan University Chengdu 610065 China Advanced Interdisciplinary Institute of Environment and Ecology Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning Beijing Normal University Zhuhai 519087 China

The sustainability and reliability of nanofiltration (NF) technology are critical for producing safe drinking water from increasingly polluted sources. Hence, we developed a high-performance NF membrane featuring an innovative meteor crater-like microstructure to overcome the trade-off between perm-selectivity and enhanced anti-fouling performance. Compared to conventional polyamide NF membranes characterized by nodular and striped structures, the NF membrane resembling a meteor crater exhibited looser structural configurations, larger water-surface areas, increased negative charge density, and enhanced hydrophilicity. The water permeance of the meteor crater-like microstructures improved by 2 ∼ 4 times compared to conventional NF membranes, with excellent removal efficiency for Na 2 SO 4 (> 98.5 %) and emerging foulants (> 91.3 %, especially bisphenol A rejection can reach 95.8 %). Furthermore, the meteor crater-like NF membranes mitigated the risk of mineral scaling due to the enhanced Donnan effect and separation selectivity. Moreover, computational fluid dynamics simulations revealed that meteor crater-like NF membranes exhibited higher shear stress distributions and greater inhomogeneity in the velocity field in the deposition direction. As a result, a dual resistance to both fouling and scaling was achieved. These advancements align NF membranes within the water-energy-environmental triad and paving the way for broader applications of NF technology in sustainable drinking water supply.

关键词： Anti-fouling Interfacial instability Meteor crater-like morphology Nanofiltration membranes Perm-selectivity

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Soil microbiome mediated nutrients decline during forest degradation process

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Soil Ecology Letters 2019年第1期1卷 59-71页

作者： Yangying Liu Shang Wang Zhujun Wang Zhaojing Zhang Huayu Qin Ziyan Wei Kai Feng Shuzhen Li Yueni Wu Huaqun Yin Hui Li Ye Deng Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental ScienceChinese Academy of SciencesBeijing 100085China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China State Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China State Key Laboratory of Forest and Soil Ecology Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China

Degradation succession in forests is an important and serious land use/cover change problem in ecology,and during these processes soil microbial communities mediate the recycling of most important *** reveal the effect of degradation succession processes on soil microbial community diversity,structure,and species interrelationships,we collected abundant samples(21 per vegetation type)in broad-leaved forest,coniferous forest,and meadow to observe the microbial community *** results showed that diversity and structure of soil prokaryotic and fungal communities responded differently to different forest degradation processes,diversity of soil microbial communities increased during degradation *** microbial communities abundance changes may indicate that prokaryotic communities showed a living strategies change as an ecological adaption to harsh conditions during forest degradation *** for fungal communities,their abundance changes may indicate that environmental selection pressure and plant selectivity during forest degradation *** in soil prokaryotic communities and fungal communities were both correlated with soil carbon and nitrogen *** soil microbial interaction network analysis indicated more complex species interrelationships formed due to the loss of soil nutrients during degradation succession processes,suggesting soil microbial communities might form more complex and stable networks to resist the external disturbance of soil nutrient *** results suggested soil microorganisms,including bacteria,archaea and fungi,all involved in the soil nutrient decline during the forest degradation process.

关键词： Microbial communities Degradation succession Soil nutrients High-throughput sequencing Molecular ecological networks

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Blueshifted hydrogen emission and shock wave of RR Lyrae variables in SDSS and LAMOST

arXiv

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arXiv 2021年

作者： Duan, Xiao-Wei Deng, Li-Cai Zhang, Hua-Wei Chen, Xiao-Dian Sun, Wei-Jia Liu, Chao Yang, Fan Department of Astronomy Peking University Yi He Yuan Road 5 Hai Dian District Beijing100871 China Kavli Institute for Astronomy & Astrophysics Peking University Yi He Yuan Road 5 Hai Dian District Beijing100871 China CAS Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China School of Astronomy and Space Science University of the Chinese Academy of Sciences Huairou101408 China Department of Astronomy China West Normal University Nanchong637009 China CAS Key Laboratory of Space Astronomy and Technology National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China

Hydrogen emissions of RR Lyrae variables are the imprints of shock waves traveling through their atmospheres. We develop a pattern recognition algorithm, which is then applied to single-epoch spectra of SDSS and LAMOST. These two spectroscopic surveys covered ∼ 10,000 photometrically confirmed RR Lyrae stars. We discovered in total 127 RR Lyrae stars with blueshifted Balmer emission feature, including 103 fundamental mode (RRab), 20 first-overtone (RRc), 3 double-mode (RRd), and 1 Blazhko type (temporary classification for RR Lyrae stars with strong Blazhko modulation in Catalina sky survey that cannot be characterized) RR Lyrae variable. This forms the largest database to date of the properties of hydrogen emission in RR Lyrae variables. Based on ZTF DR5, we carried out a detailed light-curve analysis for the Blazhko type RR Lyrae star with hydrogen emission of long-term modulations. We characterize the Blazhko type RR Lyrae star as an RRab and point out a possible Blazhko period. Finally, we set up simulations on mock spectra to test the performance of our algorithm and on the real observational strategy to investigate the occurrence of the "first apparition". Copyright © 2021, The Authors. All rights reserved.

关键词： Shock waves

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Coupled-channel approach to Tcc+ including three-body effects

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Physical Review D 2022年第1期105卷 014024-014024页

作者： Meng-Lin Du Vadim Baru Xiang-Kun Dong Arseniy Filin Feng-Kun Guo Christoph Hanhart Alexey Nefediev Juan Nieves Qian Wang Instituto de Física Corpuscular (centro mixto CSIC-UV) Institutos de Investigación de Paterna Apartado 22085 46071 Valencia Spain Institut für Theoretische Physik II Ruhr-Universität Bochum D-44780 Bochum Germany Institute for Theoretical and Experimental Physics NRC “Kurchatov Institute” Moscow 117218 Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China Institute for Advanced Simulation Institut für Kernphysik and Jülich Center for Hadron Physics Forschungszentrum Jülich D-52425 Jülich Germany P.N. Lebedev Physical Institute of the Russian Academy of Sciences 119991 Leninskiy Prospect 53 Moscow Russia Moscow Institute of Physics and Technology 141700 Institutsky lane 9 Dolgoprudny Moscow Region Russia Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum Matter South China Normal University Guangzhou 510006 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Southern Nuclear Science Computing Center South China Normal University Guangzhou 510006 China

A coupled-channel approach is applied to the charged tetraquark state Tcc+ recently discovered by the LHCb Collaboration. The parameters of the interaction are fixed by a fit to the observed line shape in the three-body D0D0π+ channel. Special attention is paid to the three-body dynamics in the Tcc+ due to the finite life time of the D*. An approach to the Tcc+ is argued to be self-consistent only if both manifestations of the three-body dynamics, the pion exchange between the D and D* mesons and the finite D* width, are taken into account simultaneously to ensure that three-body unitarity is preserved. This is especially important to precisely extract the pole position in the complex energy plane whose imaginary part is very sensitive to the details of the coupled-channel scheme employed. The D0D0 and D0D+ invariant mass distributions, predicted based on this analysis, are in good agreement with the LHCb data. The low-energy expansion of the D*D scattering amplitude is performed and the low-energy constants (the scattering length and effective range) are extracted. The compositeness parameter of the Tcc+ is found to be close to unity, which implies that the Tcc+ is a hadronic molecule generated by the interactions in the D*+D0 and D*0D+ channels. Employing heavy-quark spin symmetry, an isoscalar D*D* molecular partner of the Tcc+ with JP=1+ is predicted under the assumption that the DD*−D*D* coupled-channel effects can be neglected.

关键词： Hadron-hadron interactions Particle interactions

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Steric Gating of Excited-State Channel: Controllable AIE/RTP Switching through Tuning π-Bond Twisting

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Organic letters 2025年第23期27卷 2025 Jun 3页

作者： Hongli Xue Changqing Ye Haiyang Huang Hongli Bao College of Chemistry Fuzhou University Fuzhou Fujian 350108 P. R. China. State Key Laboratory of Structural Chemistry Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China. Fujian College University of Chinese Academy of Sciences Beijing 100049 P. R. China. University of Chinese Academy of Sciences Beijing 100049 P. R. China. Jiangxi Provincial Key Laboratory of Organic Functional Molecules Institute of Organic Chemistry Jiangxi Science and Technology Normal University Nanchang 330013 P. R. China.

We demonstrate steric control of excited-state channel in π-conjugated 1,1'-bibenzo[]isoindolylidenes through substituent-engineered C═C bond twisting. By tuning substituent bulkiness (R), we achieve dynamic switching between aggregation-induced emission and dilute/dual-state fluorescence. The mechanical gating of biradicaloid isomerization channels was confirmed by variable-temperature NMR and EPR spectroscopy. The π-twisting activates low-energy CI pathways for AIE generation, while excessive bulkiness relocks molecular conformation, enabling solution-phase emission. This steric gating mechanism, validated by TD-DFT analysis, demonstrates controllable fluorescence and phosphorescence by modulating the π-twisting feasibility of the central C═C bond, offering a novel strategy for designing advanced aggregation-induced emission (AIE) and RTP-active molecules.

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