Nowadays,cloud computing provides easy access to a set of variable and configurable computing resources based on user demand through the *** computing services are available through common internet protocols and netwo...
详细信息
Nowadays,cloud computing provides easy access to a set of variable and configurable computing resources based on user demand through the *** computing services are available through common internet protocols and network standards.n addition to the unique benefits of cloud computing,insecure communication and attacks on cloud networks cannot be *** are several techniques for dealing with network *** this end,network anomaly detection systems are widely used as an effective countermeasure against network *** anomaly-based approach generally learns normal traffic patterns in various ways and identifies patterns of *** anomaly detection systems have gained much attention in intelligently monitoring network traffic using machine learning *** paper presents an efficient model based on autoencoders for anomaly detection in cloud computing *** autoencoder learns a basic representation of the normal data and its reconstruction with minimum ***,the reconstruction error is used as an anomaly or classification *** addition,to detecting anomaly data from normal data,the classification of anomaly types has also been *** have proposed a new approach by examining an autoencoder's anomaly detection method based on data reconstruction *** the existing autoencoder-based anomaly detection techniques that consider the reconstruction error of all input features as a single value,we assume that the reconstruction error is a *** enables our model to use the reconstruction error of every input feature as an anomaly or classification *** further propose a multi-class classification structure to classify the *** use the CIDDS-001 dataset as a commonly accepted dataset in the *** evaluations show that the performance of the proposed method has improved considerably compared to the existing ones in terms of accuracy,recall,false-positive rate,and F1-score
The physicochemical properties of a specific ionic liquid(IL)are naturally considered to be constant at a given ***,a series of eutectic melts of trihexyl(tetradecyl)phosphonium chloride([P6,6,6,14]Cl)with aluminum ch...
详细信息
The physicochemical properties of a specific ionic liquid(IL)are naturally considered to be constant at a given ***,a series of eutectic melts of trihexyl(tetradecyl)phosphonium chloride([P6,6,6,14]Cl)with aluminum chloride(AlCl3)is an *** viscosity of Al_(2)Cl_(7)−-dominated[P6,6,6,14]Cl–AlCl_(3)ILs(i.e.,AlCl_(3)mole fraction x=0.60–0.67)gradually increased as a function of *** also influenced the ultraviolet–visible spectra,nuclear magnetic resonance spectra,and the glass transition temperature of the *** annealing-induced variations in physicochemical properties were not observed in the AlCl4−-and Cl−-dominated *** particular,the ionic conductivities of the ILs(x=0.60–0.67)were strongly decoupled from their viscosities during *** initio calculations revealed the bending of the long tetradecyl chains in[P6,6,6,14]+coupled with Al_(2)Cl_(7)−,while neither Cl−nor AlCl_(4)−caused *** general,[P6,6,6,14]+-based ILs are recognized as sponge-like structures that consist of nano-scale polar and non-polar *** propose a gradual structurization process in Al_(2)Cl_(7)−-dominated ILs to account for their unusual physicochemical ***,the addition of tetradecane,solvated in the non-polar domains of the ILs,substantially reduced the viscosity of the structured IL with x=*** Al electroplating is possible without a brightener,using the x=0.67 ILs,regardless of annealing or the admixture of tetradecane.
Eutectic alloys have garnered significant attention due to their promising mechanical and physical properties,as well as their technological ***,the discovery of eutectic compositionally complex alloys(ECCAs)(*** entr...
详细信息
Eutectic alloys have garnered significant attention due to their promising mechanical and physical properties,as well as their technological ***,the discovery of eutectic compositionally complex alloys(ECCAs)(*** entropy eutectic alloys)remains a formidable challenge in the vast and intricate compositional space,primarily due to the absence of readily available phase *** address this issue,we have developed an explainable machine learning(ML)framework that integrates conditional variational autoencoder(CVAE)and artificial neutral network(ANN)models,enabling direct generation of *** overcome the prevalent problem of data imbalance encountered in data-driven ECCA design,we have incorporated thermodynamicsderived data descriptors and employed K-means clustering methods for effective data *** our ML framework,we have successfully discovered dual-or even tri-phased ECCAs,spanning from quaternary to senary alloy systems,which have not been previously reported in the *** findings hold great promise and indicate that ourML framework can play a pivotal role in accelerating the discovery of technologically significant ECCAs.
This study investigates the controllability of a general heterogeneous networked sampled-data system(HNSS) consisting of nonidentical node systems, where the inner coupling between any pair of nodes can be described b...
详细信息
This study investigates the controllability of a general heterogeneous networked sampled-data system(HNSS) consisting of nonidentical node systems, where the inner coupling between any pair of nodes can be described by a unique *** signals on control and transmission channels are sampled and held by zero-order holders, and the control sampling period of each node can be different. Necessary and sufficient controllability conditions are developed for the general HNSS, using the Smith normal form and matrix equations, respectively. The HNSS in specific topology or dynamic settings is discussed subsequently with easier-to-verify conditions derived. These heterogeneous factors have been determined to independently or jointly affect the controllability of networked sampled-data systems. Notably, heterogeneous sampling periods have the potential to enhance the overall controllability, but not for systems with some special dynamics. When the node dynamics are heterogeneous,the overall system can be controllable even if it is topologically uncontrollable. In addition, in several typical heterogeneous sampled-data multi-agent systems, pathological sampling of single-node systems will necessarily cause overall uncontrollability.
Stress is a prevalent global concern impacting individuals across various life aspects. This paper investigates stress detection using electroencephalographic (EEG) signals, which have proven valuable for studying neu...
详细信息
Accurate estimation of sideslip angle and vehicle velocity is crucial for effective control of distributed drive electric ***,as these states are not directly measured,Kalman-based approaches utilizing in-vehicle sens...
详细信息
Accurate estimation of sideslip angle and vehicle velocity is crucial for effective control of distributed drive electric ***,as these states are not directly measured,Kalman-based approaches utilizing in-vehicle sensors have been developed to estimate ***,existing methods tend to ignore the impact of data loss on estimation ***,the process noise,which changes dynamically due to varying driving conditions,is not adequately *** response to these constraints,we propose a novel method called the fuzzy adaptive fault-tolerant extended Kalman filter(FAFTEKF).Initially,a fault-tolerant EKF is devised to handle missing ***,a fuzzy logic system that dynamically updates the process noise matrix,is built to improve estimation accuracy under different driving *** experimental results validate the superiority of the FAFTEKF over the traditional EKF across various scenarios with different degrees of data loss.
Clustering schemes in vehicular networks organize vehicles into logical *** are vital for improving network performance,accessing the medium,and enabling efficient data *** schemes rely on periodically broadcast hello...
详细信息
Clustering schemes in vehicular networks organize vehicles into logical *** are vital for improving network performance,accessing the medium,and enabling efficient data *** schemes rely on periodically broadcast hello messages to provide up-to-date information about the ***,the periodic exchange of messages overwhelms the system and reduces *** paper proposes the Flag-based Vehicular Clustering(FVC)*** scheme leverages a combination of Fitness Score(FS),Link Expiration Time(LET),and clustering status flags to enable efficient cluster formation in a hybrid *** FVC relies on the periodic broadcast of the basic safety message in the Dedicated Short-Range Communications(DSRC)standard for exchanging the vehicle’s status,FS,and joining *** extra information onto the existing periodic beacon reduces the overhead of exchanging additional control messages,which is the main contribution of this *** scheme is implemented in a hybrid manner by utilizing a Road Side Unit(RSU)to implement a clustering *** work considered the FastPAM algorithm,a fast version of the Partitioning Around Medoids(PAM)clustering algorithm,to generate a list of potential cluster *** FVC scheme uses the LET as the clustering metric with the FastPAM ***,the Lightweight FastPAM Vehicular Clustering(LFPVC)algorithm is considered by selecting the initial cluster heads based on the FS instead of the greedy FastPAM’s build *** the absence of the RSU,the vehicles utilize the FS with proper back-off time to self-elect the cluster *** hybrid FVC scheme increased the cluster lifetime by 32%and reduced the control-message overhead by 63%compared to the related ***,the LFPVC algorithm achieved similar results to the FastPAM algorithm.
A stack formed by consecutive deposition of 2 nm TaN/10 nm HfZrOx (HZO)/2 nm TaN in an ALD tool was proposed to be sandwiched between thick PVD TiN as the promising structure for ferroelectric capacitors (FeCAPs). Com...
详细信息
The mechanical properties of electronic devices in packaging technology are significantly affected by intermetallic compounds (IMCs). This study investigates the interfacial reaction between Ni under bump metallizatio...
详细信息
The use a stabilized lithium structure as cathode material for batteries could be a fundamental alternative in the development of next-generation energy storage ***,the lithium structure severely limits battery life c...
详细信息
The use a stabilized lithium structure as cathode material for batteries could be a fundamental alternative in the development of next-generation energy storage ***,the lithium structure severely limits battery life causes safety concerns due to the growth of lithium(Li)dendrites during rapid charge/discharge *** electrolytes,which are used in highdensity energy storage devices and avoid the instability of liquid electrolytes,can be a promising alternative for next-generation ***,poor lithium ion conductivity and structural defects at room temperature have been pointed out as *** this study,through the application of a low-dimensional graphene quantum dot(GQD)layer structure,stable operation characteristics were demonstrated based on Li^(+)ion conductivity and excellent electrochemical ***,the device based on the modified graphene quantum dots(GQDs)in solid state exhibited retention properties of 95.3%for 100 cycles at 0.5 C and room temperature(RT).Transmission electronmicroscopy analysis was performed to elucidate the Li^(+)ion action mechanism in the modified GQD/electrolyte *** low-dimensional structure of theGQD-based solid electrolyte has provided an important strategy for stably-scalable solid-state lithium battery applications at room *** was demonstrated that lithiated graphene quantum dots(Li-GQDs)inhibit the growth of Li dendrites by regulating the modified Li^(+)ion flux during charge/discharge cycling at current densities of 2.2–5.5 mA cm,acting as a modified Li diffusion heterointerface.A full Li GQDbased device was fabricated to demonstrate the practicality of the modified Li structure using the Li–GQD *** study indicates that the low-dimensional carbon structure in Li–GQDs can be an effective approach for stabilization of solid-state Li matrix architecture.
暂无评论