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LinguTimeX a Framework for Multilingual CTC Detection Using Explainable AI and Natural Language Processing 认领 引用
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作者 Omar Darwish Shorouq Al-Eidi +4 位作者 Abdallah Al-Shorman Majdi Maabreh Anas Alsobeh Plamen Zahariev Yahya Tashtoush 《Computers, Materials & Continua》 SCIE EI 2026年第1期2231-2251,共21页
Covert timing channels(CTC)exploit network resources to establish hidden communication pathways,posing signi cant risks to data security and policy compliance.erefore,detecting such hidden and dangerous threats remain... Covert timing channels(CTC)exploit network resources to establish hidden communication pathways,posing signi cant risks to data security and policy compliance.erefore,detecting such hidden and dangerous threats remains one of the security challenges. is paper proposes LinguTimeX,a new framework that combines natural language processing with arti cial intelligence,along with explainable Arti cial Intelligence(AI)not only to detect CTC but also to provide insights into the decision process.LinguTimeX performs multidimensional feature extraction by fusing linguistic attributes with temporal network patterns to identify covert channels precisely.LinguTimeX demonstrates strong e ectiveness in detecting CTC across multiple languages;namely English,Arabic,and Chinese.Speci cally,the LSTM and RNN models achieved F1 scores of 90%on the English dataset,89%on the Arabic dataset,and 88%on the Chinese dataset,showcasing their superior performance and ability to generalize across multiple languages. is highlights their robustness in detecting CTCs within security systems,regardless of the language or cultural context of the data.In contrast,the DeepForest model produced F1-scores ranging from 86%to 87%across the same datasets,further con rming its e ectiveness in CTC detection.Although other algorithms also showed reasonable accuracy,the LSTM and RNN models consistently outperformed them in multilingual settings,suggesting that deep learning models might be better suited for this particular problem. 展开更多
关键词 Arabic language Chinese language covert timing channel cybersecurity deep learning English language language processing machine learning
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AN EXPONENTIAL NON-UNIFORM BERRY-ESSEEN BOUND OF SOME TIME INHOMOGENEOUS DIFFUSION PROCESS 认领 引用
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作者 Qiaojing LIU Yaqian LV Baobin WANG 《Acta Mathematica Scientia》 SCIE CSCD 2025年第5期1879-1890,共12页
this paper,we study the exponential non-uniform Berry-Esseen bound for the maximum likelihood estimator of some time inhomogeneous diffusion process.As applications,the optimal uniform Berry-Esseen bound and optimal C... this paper,we study the exponential non-uniform Berry-Esseen bound for the maximum likelihood estimator of some time inhomogeneous diffusion process.As applications,the optimal uniform Berry-Esseen bound and optimal Cramer-type moderate deviations of the Ornstein-Uhlenbeck process andα-Brownian bridge can be obtained.The main methods are the change of measure method and asymptotic analysis technique. 展开更多
关键词 Berry-Esseen bound time inhomogeneous diffusion process Cramer-type mod-erate deviations Ornstein-Uhlenbeck process
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SINGLE MACHINE SCHEDULING WITH CONTROLLABLE PROCESSING TIMES AND COMPRESSION COSTS (PART I:EQUAL TIMES AND COSTS) 认领 引用 被引量：1
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作者 TANGGUOCHUN FOULDS,L.R. 《Applied Mathematics(A Journal of Chinese Universities)》 1998年第4期417-426,共10页
Abstract Most papers in scheduling research have treated individual job processing times as fixed parameters. However, in many practical situations, a manager may control processing time by reallocating resources. In ... Abstract Most papers in scheduling research have treated individual job processing times as fixed parameters. However, in many practical situations, a manager may control processing time by reallocating resources. In this paper, authors consider a machine scheduling problem with controllable processing times. In the first part of this paper, a special case where the processing times and compression costs are uniform among jobs is discussed. Theoretical results are derived that aid in developing an O(n 2) algorithm to slove the problem optimally. In the second part of this paper, authors generalize the discussion to general case. An effective heuristic to the general problem will be presented. 展开更多
关键词 Machine scheduling problems controllable processing times uniform compression timeand cost dominance set lateness crash activities polynomial time algorithm
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Processing Time Prediction Method Based on SVR in Semiconductor Manufacturing 认领 引用 被引量：1
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作者 朱雪初 乔非 《Journal of Donghua University(English Edition)》 EI CAS 2014年第2期98-101,共4页
The prediction problem of the actual value of the dynamic parameters in the simulation model in semiconductor manufacturing was discussed. Considering the fact that the default value of processing time of one certain ... The prediction problem of the actual value of the dynamic parameters in the simulation model in semiconductor manufacturing was discussed. Considering the fact that the default value of processing time of one certain equipment in the simulation model was not the same as its actual value,a general data driven prediction model of the processing time was built based on support vector regression( SVR),with the utilization of manufacturing information in manufacturing execution system( MES). The processing time of one certain equipment was highly related to the status of the equipment itself and the wafers being processed. To uncover the relationship of the processing time with the information of historical products,process flow,technical standard of silicon wafers and manual intervention,data were extracted from MES and used to build a prediction model. This model was employed on an ion implantation equipment as a case, and the effectiveness of the proposed method was shown by comparing with other approaches. 展开更多
关键词 semiconductor manufacturing support vector regression(SVR) processing time prediction
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KIG:A Knowledge Graph-Guided Iterative-Updating Graph Neural Network for Multisensor Time Series Time-Delay Estimation 认领 引用
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作者 Siyuan Xu Dong Pan +3 位作者 Zhaohui Jiang Zhiwen Chen Haoyang Yu Weihua Gui 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第2期327-345,共19页
Temporal alignment of multisensor time series(MTS)is a critical prerequisite for accurate modeling and optimal control in subsequent data-driven applications.Nevertheless,many approaches frequently neglect to consider... Temporal alignment of multisensor time series(MTS)is a critical prerequisite for accurate modeling and optimal control in subsequent data-driven applications.Nevertheless,many approaches frequently neglect to consider the complex interdependencies between different sensors in MTS,and temporal alignment in many methods is typically treated as an isolated task disconnected from the downstream objectives,leading to unsatisfactory performances in follow-up applications.To address these challenges,this paper proposes a novel knowledge graph(KG)-guided iterative-updating graph neural network(GNN)for time-delay estimation(TDE)in MTS.Initially,a domain-specific KG is constructed from domain mechanism knowledge,providing a foundation for GNN's initialization.Next,capitalizing on the inherent structure of the graph topology,a GNN-based TDE method is developed.Then,a customized loss function is constructed,which synthesizes both the performances of downstream tasks and graph-based constraints.Moreover,an innovative algorithm for GNN structure learning and iterative-updating is proposed to renovate the graph structure further.Finally,experimental results across various regression and classification tasks on numerical simulation,public datasets,and the real blast furnace ironmaking dataset demonstrate that the proposed method can achieve accurate temporal alignment of MTS. 展开更多
关键词 Blast furnace ironmaking process graph neural network(GNN) knowledge graph(KG) multisensor time series(MTS) temporal alignment time-delay estimation(TDE)
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SINGLE MACHINE SCHEDULING WITH CONTROLLABLE PROCESSING TIMES AND COMPRESSION COSTS : PROOF OF THEOREMS 认领 引用
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作者 TANGGUOCHUN FOULDS,L.R. 《Applied Mathematics(A Journal of Chinese Universities)》 1998年第4期427-436,共10页
Abstract This report is virtually the appendix part of the author's previous paper which includes the proofs for the theorems and lemmas.
关键词 Machine scheduling problems controllable processing times uniform compression time and cost dominance set lateness crash activities polynomial time algorithm
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A real time processing system of seismic waves using personal computers-Function and characteristics 认领 引用
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作者 范军 陈天长 +4 位作者 韩渭宾 曾健 长谷川昭 堀内茂木 郑斯华 《Acta Seismologica Sinica(English Edition)》 1998年第3期106-110,共5页
Seismological Bureau of Sichuan Province, Chengdu 610041, China2) Center for Analysis and Prediction, State Seismological Bureau, Beijing 100036, China3) Observation Center for Prediction of Earthquakes and Volcan... Seismological Bureau of Sichuan Province, Chengdu 610041, China2) Center for Analysis and Prediction, State Seismological Bureau, Beijing 100036, China3) Observation Center for Prediction of Earthquakes and Volcanic Eruptions, Faculty of Sciences, Tohoku University, Sendai 98077, Japan 展开更多
关键词 seismic wave real time processing realtime waveform display AR model the Akaike′s information criteria (AIC)
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A Recursive Method of Time-Frequency Analysis for the Signal Processing of Flutter Test with Progression Variable Speed 认领 引用 被引量：4
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作者 宋叔飚 裴承鸣 《Chinese Journal of Aeronautics》 EI CAS 2005年第3期213-217,共5页
Focused on the non-statlonarity and real-time analysis of signal in flutter test with progression variable speed （FTPVS）, a new method of recursive time-frequency analysis is presented. The time-varying system is tr... Focused on the non-statlonarity and real-time analysis of signal in flutter test with progression variable speed （FTPVS）, a new method of recursive time-frequency analysis is presented. The time-varying system is tracked on-line by building a time-varying parameter model, and then the relevant parameter spectrum can be obtained. The feasibility and advantages of the method are examined by digital simulation. The results of FTPVS at low-speed wind-tunnel promise the engineering application perspective of the method. 展开更多
关键词 flutter test with progression variable speed （FTPVS） non-stationary signal processing recursive time-frequency analysis （RTFA）
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TIME DOMAIN PROCESSING MODE SPREAD SPECTRUM SYSTEM 认领 引用
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作者 何世平 《Journal of Electronics(China)》 1995年第3期276-283,共8页
The construction and specifications of a surface acoustic wave storage correlator are described. A time domain processing mode spread spectrum system is presented. An analysis of the interference rejection for this sy... The construction and specifications of a surface acoustic wave storage correlator are described. A time domain processing mode spread spectrum system is presented. An analysis of the interference rejection for this system is provided. The formula for calculating the probability of error of the system is given. The experimental results agree with the theoretical analysis. 展开更多
关键词 Time domain processing Spread spectrum system Storage correlator
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REMAINING-LIFETIME AGE-STRUCTURED BRANCHING PROCESSES 认领 引用 被引量：1
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作者 Ziling CHENG Zenghu LI 《Acta Mathematica Scientia》 SCIE CSCD 2025年第3期1107-1136,共30页
We study age-structured branching models with reproduction law depending on the remaining lifetime of the parent. The lifespan of an individual is determined at its birth and its remaining lifetime decreases at the un... We study age-structured branching models with reproduction law depending on the remaining lifetime of the parent. The lifespan of an individual is determined at its birth and its remaining lifetime decreases at the unit speed. The models, without or with immigration, are constructed as measure-valued processes by pathwise unique solutions of stochastic equations driven by time-space Poisson random measures. In the subcritical branching case, we give a sufficient condition for the ergodicity of the process with immigration. Two large number laws and a central limit theorem of the occupation times are proved. 展开更多
关键词 branching process remaining lifetime immigration stochastic equation ergod-icity occupation time large number law central limit theorem MSC202060J80 60J85 60H15 60F15 60F05
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A dynamic programming algorithm for scheduling problems on earliness award and tardiness penalty with time-dependent processing time 认领 引用 被引量：1
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作者 余英 孙世杰 何龙敏 《Journal of Shanghai University(English Edition)》 2008年第3期204-209,共6页
In this paper, a single-machine scheduling model with a given common due date is considered. Job processing time is a linear decreasing function of its starting time. The objective function is to minimize the total we... In this paper, a single-machine scheduling model with a given common due date is considered. Job processing time is a linear decreasing function of its starting time. The objective function is to minimize the total weighted earliness award and tardiness penalty. Our aim is to find an optimal schedule so as to minimize the objective function. As the problem is NP-hard, some properties and polynomial time solvable cases of this problem are given. A dynamic programming algorithm for the general case of the problem is provided. 展开更多
关键词 scheduling single-machine linear decreasing processing time earliness tardiness
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Low-Power Operational Amplifier for Real-Time Signal Processing System of Micro Air Vehicle 认领 引用
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作者 王竹萍 仲顺安 聂丹丹 《Journal of Beijing Institute of Technology》 EI CAS 2010年第3期353-356,共4页
A low-power complementary metal oxide semiconductor（CMOS） operational amplifier （op-amp） for real-time signal processing of micro air vehicle （MAV） is designed in this paper.Traditional folded cascode architectu... A low-power complementary metal oxide semiconductor（CMOS） operational amplifier （op-amp） for real-time signal processing of micro air vehicle （MAV） is designed in this paper.Traditional folded cascode architecture with positive channel metal oxide semiconductor（PMOS） differential input transistors and sub-threshold technology are applied under the low supply voltage.Simulation results show that this amplifier has significantly low power,while maintaining almost the same gain,bandwidth and other key performances.The power required is only 0.12 mW,which is applicable to low-power and low-voltage real-time signal acquisition and processing system. 展开更多
关键词 microelectromechanical system（MEMS） operational amplifier（op-amp） low-power real-time signal processing system micro air vehicle（MAV）
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A low-background beta detection system using a time projection chamber 认领 引用
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作者 Rui-Yang Zhang Zhi-Yong Zhang +7 位作者 Zeng-Xuan Huang Yong Zhou Jian-Bei Liu Song-Song Tang Yuan-Fei Cheng Chang-Qing Feng Ming Shao Yi Zhou 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期78-91,共14页
In this study,we present a time projection chamber(TPC)system for low-background beta radiation measurements.The system consists of a TPC with a two-dimensional strip readout Micromegas and an anti-coincidence detecto... In this study,we present a time projection chamber(TPC)system for low-background beta radiation measurements.The system consists of a TPC with a two-dimensional strip readout Micromegas and an anti-coincidence detector with readout pads for cosmic ray vetoing.The detector system uses an AGET-based waveform sampling system for data acquisition.The beta detection capability of the system was verified through an experimental test using90Sr beta source.In addition,a dedicated simulation program based on Geant4 was developed to model the entire detection process,including the responses to both the beta source and background radiation.The simulation results were compared with the experimental data for both beta and background samples,and they were in good agreement.Simulation samples were used to optimize and train the classification models for beta and background discrimination.By applying the selected model into test data,the system achieved a background rate of 0.49 cpm/cm2while retaining more than 55%of90Sr beta signals within a 7 cm diameter detection region.Further analysis revealed that approximately 70%of the background originated from environmental gamma radiation,while the remaining contribution mainly originated from the intrinsic radioactivity of the detector materials,particularly the FR-4-based field cage and readout plane.Based on the knowledge gained from the experiments and simulations,an optimization of the TPC system was proposed,with the simulation predicting a potential reduction in the background rate to 0.0012 cpm/cm2. 展开更多
关键词 Gaseous detector Time projection chamber Micromegas Low-background beta detection Detector modeling and simulations Data processing methods
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Time consumption, productivity, and cost analysis of the motor manual tree felling and processing in the Hyrcanian Forest in Iran 认领 引用
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作者 Rostam Mousavi Mehrdad Nikouy Jori Uusitalo 《Journal of Forestry Research》 CAS CSCD 2011年第4期665-669,共5页
An empirical time study was cohducted to evaluate the performance of the current felling and tree processing methods used in Northern Iran＇s Hyrcanian forest. Motor-manual felling is done mostly in winter, while tree... An empirical time study was cohducted to evaluate the performance of the current felling and tree processing methods used in Northern Iran＇s Hyrcanian forest. Motor-manual felling is done mostly in winter, while tree processing starts when the felling season ends. We identified the elements of felling and processing work phases, and 142 cycles and 110 cycles were respectively recorded for felling and processing. On the basis of data analysis （time study）, we developed statistical models of effective time consumption in the respective work phase and for its total productivity. The production rate of felling with and without delay time was 9.7 and 11.65 trees per hour （0.17 USD.m^-3 and 0.21 USD-m^-3）, and the average production cost with and without delay was 1.21 USD and 1.45 USD per tree, respectively. The average productivity of processing was 35 m^3 per effective hour and the average unit cost of processing was 0.92 USD.m^-3. 展开更多
关键词 Motor-manual felling time study chainsaw processing cost forest work study
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Ultra-long-distance phase-sensitive optical time-domain reflectometer with sub-meter resolution 认领 引用
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作者 WEIDONG BAI YU WANG +3 位作者 PENGFEI WANG XIN LIU QING BAI BAOQUAN JIN 《Photonics Research》 SCIE EI CAS CSCD 2026年第7期3095-3110,共16页
The synchronous improvement of sensing distance and spatial resolution(SR)is a formidable challenge for a phase-sensitive optical time-domain reflectometer(Φ-OTDR).We propose a groundbreaking solution that combines o... The synchronous improvement of sensing distance and spatial resolution(SR)is a formidable challenge for a phase-sensitive optical time-domain reflectometer(Φ-OTDR).We propose a groundbreaking solution that combines optical phase compression processing and system bandwidth compensation to break this bottleneck.The constant amplitude zero autocorrelation sequence(CAZAS)with ideal pulse compression characteristics is leveraged to ensure a high signal-to-noise ratio(SNR)for long-distance sensing,while Wiener deconvolution compensates for system bandwidth limitations to recover high-resolution signals.Experimental results demonstrate that the proposed system achieves a sensing distance of 101.53 km with the SR of 0.8 m without distributed amplification.By employing distributed bidirectional Raman amplification,the sensing distance is further extended to 185.40 km while maintaining the SR of 0.8 m.This scheme provides an effective approach for developing long-distance and high-resolution environmental acoustic sensing. 展开更多
关键词 break bottleneckthe pulse compression phase sensitive optical time domain reflectometer optical phase compression processing constant amplitude zero autocorrelation sequence cazas system bandwidth compensation wiener deco ultra long distance
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A Bayesian Prognosis Framework for Rolling Bearings Based on Total Harmonic Distortion Health Indicator and Nonlinear Wiener Process 认领 引用
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作者 Afshin Nagheli Mehrdad Poursina Hossein Karimpour 《Journal of Dynamics, Monitoring and Diagnostics》 2026年第1期74-85,共12页
Rolling bearings are one of the key components of rotating machinery.Accurate prediction of the remaining useful life(RUL)of bearings can reduce maintenance costs,increase the reliability of the mechanical system,and ... Rolling bearings are one of the key components of rotating machinery.Accurate prediction of the remaining useful life(RUL)of bearings can reduce maintenance costs,increase the reliability of the mechanical system,and prevent catastrophic accidents.Accurate and reliable estimation of bearing RUL requires a suitable health indicator(HI).Therefore,a novel HI called the total harmonic distortion(THD)is constructed using advanced frequency domain analysis to accurately reflect the bearing’s health status.The results confirm that the THD health indicator has excellent monotonicity,robustness,and trendability.In this work,a Wiener process with different drifts is used to predict the RUL.Furthermore,the parameters of the Wiener model are estimated online using Bayesian theory.The model is then validated using an accelerated experimental test bench.The results demonstrate that the Wiener process combined with the power law model achieves higher accuracy and stability than other Wiener models. 展开更多
关键词 first prediction time remaining useful life rolling bearing total harmonic distortion Wiener process
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Distributed acoustic sensing data pattern recognition with a short-time Fourier transform downsampling module 认领 引用
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作者 Wenhao ZHU Yulong CAO 《Optoelectronics Letters》 EI 2026年第4期216-222,共7页
Distributed acoustic sensing(DAS)technology is widely used in seismic monitoring,intrusion detection,and other fields due to its advantages of wide monitoring range and low cost.However,the problems of complex signal ... Distributed acoustic sensing(DAS)technology is widely used in seismic monitoring,intrusion detection,and other fields due to its advantages of wide monitoring range and low cost.However,the problems of complex signal processing and large data volume limit its applications.This paper proposes a downsampling method based on short-time Fourier transform,which reduces the length of the time series while retaining high-frequency information.Experiments show that this method improves the efficiency and classification performance of the model,with an F1 value of 0.9147 on a four-class private dataset and an accuracy of 0.9944 on a two-class public dataset. 展开更多
关键词 data volume downsampling distributed acoustic sensing das technology signal processing short time fourier transform distributed acoustic sensing seismic monitoringintrusion detectionand downsampling method
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A Genetic Algorithm for Single Machine Scheduling with Fuzzy Processing Time and Multiple Objectives 认领 引用
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作者 吴超超 顾幸生 《Journal of Donghua University(English Edition)》 EI CAS 2004年第3期185-189,共5页
In this paper, by considering the fuzzy nature of the data in real-life problems, single machine scheduling problems with fuzzy processing time and multiple objectives are formulated and an efficient genetic algorithm... In this paper, by considering the fuzzy nature of the data in real-life problems, single machine scheduling problems with fuzzy processing time and multiple objectives are formulated and an efficient genetic algorithm which is suitable for solving these problems is proposed. As illustrative numerical examples, twenty jobs processing on a machine is considered. The feasibility and effectiveness of the proposed method have been demonstrated in the simulation. 展开更多
关键词 scheduling single machine genetic algorithms fuzzy processing time multiple objectives
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High Accuracy Time of Flight Measurement Using Digital Signal Processing Techniques for Subsea Applications 认领 引用 被引量：2
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作者 Muhammad Ashraf Hamza Qayyum 《Journal of Signal and Information Processing》 2011年第4期330-335,共6页
The techniques widely used in ultrasonic measurements are based on the determination of the time of flight (T.o.F). A short train of waves is transmitted and same transducer is used for reception of the reflected sign... The techniques widely used in ultrasonic measurements are based on the determination of the time of flight (T.o.F). A short train of waves is transmitted and same transducer is used for reception of the reflected signal for the pulse-echo measurement applications. The amplitude of the received waveform is an envelope which starts from zero reaches to a peak and then dies out. The echoes are mostly detected by simple threshold crossing technique, which is also cause of error. In this paper digital signal processing is used to calculate the time delay in reception i.e. T.o.F, for which a maximum similarity between the reference and the delayed echo signals is obtained. To observe the effect of phase uncertainties and frequency shifts (Doppler), this processing is carried out, both directly on the actual wave shape and after extracting the envelopes of the reference and delayed echo signals. Several digital signal processing algorithms are considered and the effects of different factors such as sampling rate, resolution of digitization and S/N ratio are analyzed. Result show accuracy, computing time and cost for different techniques. 展开更多
关键词 SONAR Signal Processing Time of Flight
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Human Brain Microwave Imaging Signal Processing: Frequency Domain (S-parameters) to Time Domain Conversion 认领 引用
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作者 Kim Mey Chew Rubita Sudirman +2 位作者 Nasrul Humaimi Mahmood Norhudah Seman Ching Yee Yong 《Engineering（科研）》 2013年第5期31-36,共6页
The paper presents the microwave signal processing method using MATLAB based on the result of microwave imaging system simulation developed using Computer Simulation Technology (CST). The simulation system contains a ... The paper presents the microwave signal processing method using MATLAB based on the result of microwave imaging system simulation developed using Computer Simulation Technology (CST). The simulation system contains a transmittingeceiving antenna, human brain and a tumor inside the brain model. The source signal, microwave signal operates from 1 to 10 GHz. The generated scattering parameters (S-parameters) are in frequency domain form. This paper describes in detail regarding the signal conversion from frequency domain to time domain through proposed Inverse Fast Fourier Transform (IFFT) method as well as the noise filtering process. Peaks detection process was performed in order to identify the time delay of the reflection points at different Y-axis 展开更多
关键词 Microwave Signal Signal Processing Scattering Parameters Time Domain IFFT
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