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The secret behind instant messaging: video identification attack against complex protocols

CYBERSECURITY 2025年第1期8卷 1-18页

作者： Huang, Ruiqi Wu, Hua Wang, Xiaohui Cheng, Guang Hu, Xiaoyan Southeast Univ Sch Cyber Sci & Engn 2 Southeast Univ Rd Nanjing 211189 Jiangsu Peoples R China Purple Mt Labs Network & Commun Secur 9 Muozhou East Rd Nanjing 211111 Jiangsu Peoples R China Jiangsu Prov Engn Res Ctr Secur Ubiquitous Network 2 Southeast Univ Rd Nanjing 211189 Jiangsu Peoples R China

People conveniently share and watch videos through Instant Messaging(IM) software, which is likely to reveal their preferences. Identifying IM video content can enable attackers to snoop on user privacy. Existing methods identify videos based on the features embodied in the DASH stream. However, IM software does not transmit video using DASH. IM software uses various transmission protocols or even private protocols for video transmission, which poses a challenge for video content identification. In this paper, we propose a video content identification framework for IM software, which obtains video content by extracting unique and stable features of videos as transmission fingerprints and matching them in a video fingerprint database. We evaluate the method on two popular IM software. The experimental results show that our method has an accuracy of 98.05% and 99.49% for ciphertext videos transmitted over GQUIC protocol and HTTPS protocol, respectively, and even reaches 100% identification accuracy for plaintext videos. Furthermore, the experimental results outperform the existing methods.

关键词： Instant messaging software video Video fingerprint Video identification Privacy

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Changes in retinal and choroidal thickness and blood density in participants with keratoconus

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OPHTHALMIC AND PHYSIOLOGICAL OPTICS 2025年第5期45卷 1201-1210页

作者： Sun, Bingqing Xian, Yiyong Yang, Dongmei Hu, Xiaojun Wang, Jifang Sun, Ling Shen, Yang Zhou, Xingtao Zhang, Xiaoyu Fudan Univ Eye & ENT Hosp Eye Inst Shanghai Peoples R China Fudan Univ Eye & ENT Hosp Dept Ophthalmol Shanghai Peoples R China Chinese Acad Med Sci Key Lab Myopia & Related Eye Dis Shanghai Peoples R China Shanghai Res Ctr Ophthalmol & Optometry Shanghai Peoples R China Shanghai Engn Res Ctr Laser & Autostereoscop 3D Vi Shanghai Peoples R China

PurposeKeratoconus causes progressive myopia and irregular astigmatism, leading to vision impairment. This study investigated choroidal and retinal variations and their influence in participants with *** case-control study assessed 33 keratoconic and 33 axial length-matched healthy myopic eyes. Choroidal and retinal parameters between the two groups were compared using general linear models. Correlations between keratoconus choroidal/retinal parameters and ABCD grading or tomographic keratoconus classification (TKC) staging were assessed. Multivariable linear regression models were used to investigate the factors affecting changes in keratoconus choroidal/retinal thickness and blood *** participants exhibited 2.3% lower macular inner retinal thickness (mean difference: -4.97 mu m, p = 0.02), along with 8.0% and 2.3% higher superior and mean retinal vessel (mean difference: 2.71%, p = 0.03;mean difference: 3.22%, p = 0.01) densities, respectively, compared with controls. The blood flow density of the choroidal capillaries was 15.5% higher (mean difference: 5.72%, p = 0.01), while the large choroidal vessel density was 4.8% lower (mean difference: -3.38%, p = 0.03) at the macula in the keratoconus group. In the keratoconus group, higher deep retinal vessel density correlated with more severe A grading (r = 0.49, p = 0.006), while lower large choroidal vessel density correlated with more severe B grading (r = -0.48, p = 0.006);notably, higher deep retinal vessel density was positively correlated with more severe TKC staging (r = 0.50, p = 0.004). Furthermore, superior retinal vessel density was associated with the index of vertical asymmetry (IVA) (slope coefficient: 3.55%, p = 0.03) and the index of height asymmetry (slope coefficient: 0.07%, p = 0.04). Mean retinal vessel density was associated with IVA (slope coefficient: 4.82%, p = 0.01). Choroidal capillary density was associated with the keratoconus index (slope coefficient

关键词： keratoconus retinal thickness choroidal thickness blood flow density optical coherence tomography angiography

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The first-trimester triglyceride glucose-body mass index is a valuable predictor for adverse pregnancy outcomes

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BMC PREGNANCY AND CHILDBIRTH 2025年第1期25卷 1-12页

作者： Meng, Zhaoran Lin, Minhuan Song, Lizhu Chen, Yiqing Deng, Songqing Xia, Shuting Huang, Xuewen Luo, Yanmin Sun Yat Sen Univ Affiliated Hosp 1 Dept Obstet & Gynecol 58 Zhong Shan Er Rd Guangzhou Peoples R China Guangdong Prov Clin Res Ctr Obstetr & Gynecol Dis Guangzhou Peoples R China Sun Yat Sen Univ Affiliated Hosp 3 Dept Obstet & Gynecol 600 Tianhe Rd Guangzhou Peoples R China

BackgroundAlthough insulin resistance has been associated with unfavorable pregnancy outcomes, the ability of non-insulin-based insulin resistance indicators to predict adverse pregnancy outcomes has yet to be thoroughly understood. The study aims to investigate the association and predictability of triglyceride glucose-body mass index (TyG-BMI), a biomarker of non-insulin-based insulin resistance, with the risks of adverse pregnancy *** retrospective study included 1,136 subjects. Group-based trajectory modeling (GBTM) was employed to identify the TyG-BMI index trajectory. Logistic regression, restricted cubic spline (RCS) regression, and subgroup analysis were used to assess the association between the TyG-BMI index trajectory and the first-trimester TyG-BMI index with the risks of adverse pregnancy outcomes. Receiver-operating characteristic (ROC) curve analysis and the DeLong test were utilized to evaluate the prediction ability of the first-trimester TyG-BMI index for adverse pregnancy *** revealed three distinct trajectories of the TyG-BMI index. Using the "low-stable" trajectory as a reference, the "high-stable" trajectory was independently associated with an increased risk of gestational diabetes mellitus (GDM) (aOR = 2.01, 95% CI 1.20-3.37), hypertensive disorders of pregnancy (HDP) (aOR = 6.05, 95% CI 3.00-12.18), and large for gestational age (LGA) (aOR = 2.83, 95% CI 1.28-6.25). The highest quartile of the first-trimester TyG-BMI index was independently linked to elevated GDM (aOR = 3.27, 95% CI 1.92-5.59), HDP (aOR = 9.26, 95% CI 3.19-26.88), and LGA (aOR = 2.26, 95% CI 1.00-5.09)risks. Additionally, the third quartile of the first-trimester TyG-BMI index had 2.21-fold increased odds of GDM (aOR = 2.21, 95% CI 1.27-3.82). The first-trimester TyG-BMI index demonstrated a significant linear association with GDM, HDP, SGA, and LGA risks. Compared to the TyG-BMI index trajectory, the highest quartile of the first-trimester Ty

关键词： Triglyceride glucose-body mass index Insulin resistance Group-based trajectory modeling Adverse pregnancy outcomes Gestational diabetes mellitus

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ASFV pS183L protein negatively regulates RLR-mediated antiviral signalling by blocking MDA5 oligomerisation

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VETERINARY research 2025年第1期56卷 1-13页

作者： Chen, Huan Yu, Qun Gao, Xiaoyu Huang, Tao Bao, Chenyi Guo, Jiaona Wang, Zhenzhong Lv, Jiaxuan Dai, Jianjun Babiuk, Lorne A. Zou, Xingqi Jung, Yong-Sam Qian, Yingjuan Nanjing Agr Univ Coll Vet Med Lab Emerging Infect Dis & One Hlth Nanjing Jiangsu Peoples R China Nanjing Agr Univ Coll Vet Med MOE Joint Int Res Lab Anim Hlth & Food Safety Nanjing Jiangsu Peoples R China China Pharmaceut Univ Sch Life Sci & Technol Nanjing Peoples R China Univ Alberta Edmonton AB Canada China Inst Vet Drug Control China WOAH Reference Lab Class Swine Fever Beijing Peoples R China Jiangsu Agrianim Husb Vocat Coll Jiangsu Key Lab High Tech Res & Dev Vet Biopharmac Vet Biopharmaceut Taizhou Jiangsu Peoples R China

The retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) are major sensors against viral infection, but their roles in DNA virus infection largely remain unknown. This study found that a previously uncharacterised protein, pS183L, negatively regulates RLR signalling by suppressing MDA5 oligomerisation. Specifically, we showed that the overexpression of pS183L suppresses MDA5 but not cGAS-STING or RIG-I-induced IFN-beta activation. Consistently, pS183L inhibited high molecular weight poly (I:C) activated IFN-beta production. Furthermore, we demonstrated that pS183L interacts with CARDs and the MDA5 Helicase domain, consequently blocking MDA5 oligomerisation and the MDA5-MAVS interaction. Taken together, we concluded that pS183L blocks MDA5 oligomerisation through protein-protein interaction and thus disrupts MDA5-mediated IFN-beta signalling.

关键词： African swine fever virus pS183L MDA5 oligomerisation IFN-beta

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Safety of and chorioretinal circulation during repeated low-level red-light therapy for myopic children

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CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 2025年第2期53卷 119-132页

作者： Jiang, Zhaoxin Chen, Shuyu Wang, Renchun Ma, Jin Sun Yat Sen Univ Prov Clin Res Ctr Ocular Dis Guangdong Prov Key Lab Ophthalmol & Visual Sci State Key Lab OphthalmolZhongshan Ophthalm Ctr Guangzhou Peoples R China

BackgroundTo evaluate the safety of repeated low-level red-light (RLRL) therapy in children, and the dynamic evolution of choroidal and retinal blood flow. MethodsThis is a single-centre, randomised, single-blind, parallel-group clinical trial. Seventy myopic children were randomly assigned to either the intervention group [receiving RLRL therapy plus single-vision spectacle (SVS)] or the control group (wearing SVS). Participants underwent comprehensive ophthalmic examinations following their first irradiation, 9 months continuous RLRL therapy and stop of treatment. Quantitative analyses of choroidal and retinal microcirculation were analysed via optical coherence tomography angiography. ResultsOver 9 months of treatment, while the RLRL treatment demonstrated significantly less increases in refractive error and axial length compared with the SVS treatment (ps < 0.05), no abnormalities in fundus structure or visual function (mfERG, VEP and microperimetry) were detected (ps > 0.05). A single red-light exposure did not exert a significant influence on choroidal thickness (ps > 0.05). Upon continuous treatment, the RLRL group achieved peak values in these circulations at 9 months (ps < 0.05). Following cessation of exposure, all circulations exhibited a declining trend, reaching similar levels in both groups (ps > 0.05). As the frequency of red-light exposures intensified, there was a consistent surge in these circulations (ps < 0.05). ConclusionsNine months of continuous RLRL exposure does not cause toxic side effects on retinal or optic nerve functions, and there is a time-dependent cumulative response in choroidal and retinal circulation.

关键词： choroidal circulation myopia control repeated low-level red-light retinal circulation

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Single-Crystalline Bulk Acoustic Wave Resonators Fabricated With AlN Film Grown by a Combination of PLD and MOCVD Methods

IEEE ELECTRON DEVICE LETTERS

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IEEE ELECTRON DEVICE LETTERS 2024年第4期45卷 538-541页

作者： Ouyang, Peidong Yi, Xinyan Li, Guoqiang South China Univ Technol State Key Lab Luminescent Mat & Devices Guangzhou 510640 Peoples R China Guangzhou FLCT Commun Technol Co Ltd Guangzhou 510700 Peoples R China

Among the various methods that have been utilized to enhance the efficiency of Bulk Acoustic Wave (BAW) filters, the AlN piezoelectric layer quality improvement demonstrates robust functionality and operability. A combination of pulsed laser deposition (PLD) and metal-organic chemical vapor deposition (MOCVD) methods of growing III-nitride films, the MEMS wafer process based on which was then constructed to prepare the Single-crystalline AlN Bulk Acoustic Resonators (SABAR). The as-grown film has a reduced full-width at half-maximums for AlN (0002) X-ray rocking curves of 0.21(degrees), a lower average RMS of 0.140nm, and a higher effective coupling coefficient of 6.25%, indicating a 4097 Q-factor of SABAR resonator that precedes BAWs by an incredibly 182.5% with PVD sputtered AlN.

关键词： Aluminum nitride III-V semiconductor materials Resonators MOCVD Resonator filters Substrates Silicon AlN bulk acoustic wave (BAW) metal-organic chemical vapor deposition (MOCVD) pulsed laser deposition (PLD) single-crystalline ALN bulk acoustic resonators (SABAR)

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An Efficient Approximate EP-Based Iterative Detection and Decoding for Massive MIMO

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IEEE WIRELESS COMMUNICATIONS LETTERS 2024年第2期13卷 255-259页

作者： Tan, Xiaosi Li, Weiping Zhang, Zaichen You, Xiaohu Zhang, Chuan Southeast Univ LEADS Natl Mobile Commun Res Lab Nanjing 211189 Peoples R China Southeast Univ Frontiers Sci Ctr Mobile Informat Commun & Secur Nanjing 211189 Peoples R China

In this letter, an efficient approximate expectation propagation (EPA) based iterative detection and decoding (IDD) scheme named EPA-IDD is first proposed for LDPC-coded massive MIMO systems. EPA is applied in IDD to bypass the variance updates in the inner loops, which reduces matrix inversions, simplifies extrinsic messages, and effectively enhance the convergence performance of IDD. In addition, a partial resetting scheme is proposed to efficiently adopt the decoder output into the EPA detector. A Neumann series based approximation called wNSA-EPA-IDD is further developed to reduce complexity. Numerical results show that the proposed EPA-IDD schemes outperform the state-of-the-art (SOA) double EP (DEP) in various LDPC-coded MIMO scenarios. Complexity analysis is presented to validate the improved efficiency of the proposed algorithms.

关键词： Decoding Detectors Iterative decoding Complexity theory Massive MIMO Iterative methods Convergence expectation propagation iterative detection and decoding Neumann-series approximation

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Mapping of powdery mildew resistance genes transferred to common wheat from wild emmer wheat revealed three functional Pm60 haplotypes

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The Crop Journal 2024年第2期12卷 540-548页

作者： Wenxin Wei Nannan Liu Shengnan Zhang Jing Zhang Wei Pan Xiaoming Xie Zuhuan Yang Junna Sun Jun Ma Zhaorong Hu Weilong Guo Qiaoling Luo Jingzhong Xie Fei He Yinghui Li Chaojie Xie Qixin Sun Key Laboratory of Crop Heterosis and Utilization(MOE)/Key Laboratory of Crop Genetic Improvement China Agricultural UniversityBeijing 100193China Institute of Advanced Agricultural Science Peking UniversityWeifang 261200ShandongChina Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130SichuanChina Institute of Evolution University of HaifaMt.CarmelHaifa 3498838Israel

Powdery mildew(PM),caused by Blumeria graminis ***(Bgt),is one of the destructive wheat diseases *** emmer wheat(Triticum turgidum ***,WEW),a tetraploid progenitor of common wheat,is a valuable genetic resource for wheat disease resistance breeding *** developed three hexaploid pre-breeding lines with PM resistance genes derived from three WEW *** resistant pre-breeding lines were crossed with susceptible common wheat *** in the F2populations were 3 resistant:1 susceptible,suggesting a single dominant allele in each resistant *** of the resistance gene in each line indicated a single locus on the long arm of chromosome 7A,at the approximate location of previously cloned Pm60 from *** sequencing revealed three different Pm60 haplotypes(Hap 3,Hap 5,and Hap 6).Co-segregating diagnostic markers were developed for identification and selection of each *** resistance function of each haplotype was verified by the virus-induced gene silencing(VIGS).Common wheat lines carrying each of these Pm60 haplotypes were resistant to most Bgt isolates and differences in the response arrays suggested allelic variation in response.

关键词： Alleles Blumeria graminus Marker-assisted selection Molecular marker Triticum dicoccoides

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A new method to calculate the in-situ compositions of gas condensate reservoirs

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ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS 2025年第1期47卷 1118-1130页

作者： Yang, Yang Wang, Haitao Lun, Zengmin Hu, Wei Sinopec Petr Explorat & Prod Res Inst Beijing 100083 Peoples R China

The well fluid composition of a gas condensate reservoir varies significantly during depletion. Therefore, the samples taken from the well stream may not be representative of the in-situ fluid compositions of gas condensate reservoirs. Other than putting the field development plan into risk based on PVT analysis of the unrepresentative samples, it is essential to reconstruct the initial fluid composition. A new method is proposed in this study to determine the in-situ compositions of gas condensate reservoirs. Multi-objective genetic algorithm and compositional numerical simulations are applied to calculate the initial composition by fitting two objectives: (1) the absolute deviation of the compositions between simulation results and the sample taken at any stage of depletion;(2) the history matching results between compositional simulations and well production performance. A case study of a near-critical gas condensate reservoir with two sampling results is also performed to validate the new method in this paper. The results show that the total absolute deviations of sampling compositions are 6.93-10.03 mol% and the relative deviation of cumulative production is 2.71%.

关键词： Gas condensate reservoir in-situ composition genetic algorithm numerical simulation

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Fully Distributed Risk-based Robust Reserve Scheduling for Bulk Hybrid AC-DC Systems

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 634-644页

作者： Zhe Chen Shufeng Dong Chuangxin Guo Yi Ding Hangyin Mao the college of Electrical Engineering in Zhejiang University HangzhouZhejiang 310027China Zhejiang Power Grid Co. LTD.HangzhouZhejiang 310027China

To enhance the cost-effectiveness of bulk hybrid AC-DC power systems and promote wind consumption,this paper proposes a two-stage risk-based robust reserve scheduling(RRRS)*** from traditional robust optimization,the proposed model applies an adjustable uncertainty set rather than a fixed ***,the operational risk is optimized together with the dispatch schedules,with a reasonable admissible region of wind power obtained *** addition,both the operational base point and adjustment capacity of tielines are optimized in the RRRS model,which enables reserve sharing among the connected areas to handle the significant wind *** on the alternating direction method of multipliers(ADMM),a fully distributed framework is presented to solve the RRRS model in a distributed way.A dynamic penalty factor adjustment strategy(DPA)is also developed and applied to enhance its convergence *** only limited information needs to be exchanged during the solution process,the communication burden is reduced and regional information is *** studies on the 2-area 12-bus system and 3-area 354-bus system illustrate the effectiveness of the proposed model and approach.

关键词： Dynamic penalty factor adjustment strategy fully distributed framework hybrid AC-DC systems reserve scheduling risk robust optimization

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