In order to deal with APT(advanced Persistent Threat) attacks, this paper proposes a quantifiable Attack-Defense Tree model. First, the model gives both attack and defense leaf node a variety of security attributes. A...
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ISBN:
(纸本)9781538645093
In order to deal with APT(advanced Persistent Threat) attacks, this paper proposes a quantifiable Attack-Defense Tree model. First, the model gives both attack and defense leaf node a variety of security attributes. And then quantifies the nodes through the analytic hierarchy process. Finally, it analyzes the impact of the defense measures on the attack behavior. Through the application of the model, we can see that the quantifiable Attack-Defense Tree model can well describe the impact of defense measures on attack behavior.
With the rapid development of new generation technologies, the digital twin (DT) has become a core focus for the solution of assembly process in the fourth industrial evolution. So, based on DT, aiming at the unobserv...
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ISBN:
(数字)9781665458641
ISBN:
(纸本)9781665458641
With the rapid development of new generation technologies, the digital twin (DT) has become a core focus for the solution of assembly process in the fourth industrial evolution. So, based on DT, aiming at the unobservable, unpredictable, and uncontrollable problems during the assembly process of complex products like large solid rocket engines, we propose a digital twin-driven framework for online prediction and control method toward assembly quality for complex products. Under this framework, firstly, the high-fidelity modeling method is presented involving 3D CAD and assembly quality model based on point cloud towards unobservable problems. Secondly, online deviation traceability and quality prediction are introduced to aim at unpredictable problems. Thirdly, intelligent regulation and control mechanism for assembly quality based on DT, AR, deep learning, etc. is developed for uncontrollable problems in assembly process. Finally, the large rocket engine nozzle is taken as a case to verify the entire framework and method effectiveness.
advanced integrated metrology capability is actively being pursued in several process areas, including etch, to shorten process cycle times, enable wafer-level advancedprocesscontrol (APC), and improve productivity....
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ISBN:
(纸本)0819448494
advanced integrated metrology capability is actively being pursued in several process areas, including etch, to shorten process cycle times, enable wafer-level advancedprocesscontrol (APC), and improve productivity. In this study, KLA-Tencor's scatterometry-based iSpectra Spectroscopic CD was integrated on a Lam 2300 Versys Star(TM) silicon etch system. Feed-forward control techniques were used to reduce critical dimension (CD) variation. Pre-etch CD measurements were sent to the etch system to modify the trim time and achieve targeted CDs. CDs were brought to within 1 run from a starting CD spread of 25 nm, showing the effectiveness of this processcontrol approach together with the advantages of spectroscopic CD metrology over conventional CD measurement techniques.
In order to solve a series of problems that the current security analysis scenarios are highly discrete and cannot be integrated, moreover the security analysis scenarios lacks precise permission control, this paper p...
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ISBN:
(数字)9781665458641
ISBN:
(纸本)9781665458641
In order to solve a series of problems that the current security analysis scenarios are highly discrete and cannot be integrated, moreover the security analysis scenarios lacks precise permission control, this paper proposes an automatic construction and fine-grained control model of security analysis scenarios, which can 1) assist analysts in the rapid iterative development of security analysis scenarios, and support the automated construction of the entire process of security analysis scenarios tasks;2) unified management of existing security analysis scenarios and provide start and stop control for analysis tasks, 3) provide fine-grained permission control for security analysis scenarios to ensure the manageability and controllability of security analysis scenarios. The model can help analysts simplify the development process and improve the research and development (R&D) efficiency, so as to further quickly mine the alarm events like cyber-attacks in the network and strengthen the network security situation awareness.
Planning the factory 2000, the factory of the future with its advancedautomation, needs considerable attention to detail so that the capital expenditure produces a facility which is right first time and will generate...
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ISBN:
(纸本)0852966261
Planning the factory 2000, the factory of the future with its advancedautomation, needs considerable attention to detail so that the capital expenditure produces a facility which is right first time and will generate wealth through jobs and profit. Many features have to be analyzed to design and plan the factory and the method proposed in this paper enables the layout of the site, the internals of the buildings and the configuration of equipment in process cells to be synthesized. It illustrates the decisions which are taken so that those from whom approval is sought can appreciate the design process. This shortens the approval time and can help in the acquisition of capital investment funds.
Most commonly used feed forward and feedback threaded control algorithms are not always sufficed to achieve the expected processcontrol results. New smaller node sizes and complex processcontrol requirements demand ...
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ISBN:
(纸本)9781479999309
Most commonly used feed forward and feedback threaded control algorithms are not always sufficed to achieve the expected processcontrol results. New smaller node sizes and complex processcontrol requirements demand for new and embedded solutions. This paper discusses an advanced integration approach where a complete automation solution was designed and implemented by integrating Real Time Dispatching (RTD) and advancedprocesscontrol (APC) systems, delivering to complex custom processcontrol requirements for a critical Deep Trench (DT) Poly Stud Recess Etch.
Today's industrial requirements regarding the ability of embedded devices used for decentralized automation are increasing. Industrial providers of automation equipment strive to make their products and thus, indu...
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ISBN:
(纸本)9781538635346
Today's industrial requirements regarding the ability of embedded devices used for decentralized automation are increasing. Industrial providers of automation equipment strive to make their products and thus, industrial plants, smarter to raise efficiency. This evolution is based on new technologies like machine learning, predictive maintenance, sensor fusion and advancedprocesscontrols. These techniques require performance and energy efficient hardware platforms supporting a fast execution of computational intensive algorithms in compliance with real-time constraints. Therefore, to achieve these targets in a cost-efficient manner, the sharing of hardware resources to implement advancedprocesscontrols or machine learning algorithms is beneficial. Further, if different institutions integrating intellectual property (IP) into a single platform a certain degree of isolation is mandatory to protect their IP against theft or manipulation. In this paper, we propose a rapid control prototyping platform supporting the sharing of resources in an isolated manner to evaluate new control or monitoring strategies on a single platform with the help of Linux Containers for process isolation, MQTT for interprocess communication, OPC UA for vertical integration and partial bitstreams.
To implement the new generation thermo mechanical controlprocess (NG-TMCP), the automatic control system of ultra fast cooling (UFC) was developed by combined with the renovation project of controlled cooling system ...
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ISBN:
(纸本)9783037855447
To implement the new generation thermo mechanical controlprocess (NG-TMCP), the automatic control system of ultra fast cooling (UFC) was developed by combined with the renovation project of controlled cooling system in one plate production line. This system was composed of basic automation subsystem and processautomation subsystem. As the main control unit of the basic automatic control system, a S7400 PLC system is used to control the UFC device and to achieve the chain control between the UFC system and the mill system. While the processcontrol system is to realize the automatical setting of the cooling schedule by the developed finite element temperature field model and the temperature homogeneity model. The industry application shows that the NG-TMCP which is based on the UFC can reduce the alloy content effectively and implement the low-cost reduction produce of high-grade products.
To realize opportunistic MAC (Media Access control) layer access and to avoid collision in channel competition among nodes in powerline carrier and wireless converged communications, this paper proposes a channel pred...
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ISBN:
(纸本)9781538645093
To realize opportunistic MAC (Media Access control) layer access and to avoid collision in channel competition among nodes in powerline carrier and wireless converged communications, this paper proposes a channel prediction based access control algorithm of converged communication network Since the process of occupying channels was unexpected, the semi-Markova process is adopted to predict channel competition activities. This proposed algorithm substantially utilizes channel sensing results and the channel competition condition to predict channel state in the next time and the remainder time. Compared to traditional carrier sensing multiple access algorithm, the simulation result shows the proposed approach can greatly improve the converged network efficiency in terms of collision rate and packet loss rate.
In this paper,the adaptive control problem is investigated for a class of strict-feedback nonlinear time-delay systems with triangular *** the backstepping method,new Lyapunov-Krasovskii functionals are constructed in...
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ISBN:
(纸本)9781479919819
In this paper,the adaptive control problem is investigated for a class of strict-feedback nonlinear time-delay systems with triangular *** the backstepping method,new Lyapunov-Krasovskii functionals are constructed in the designing process of the control input of each *** eliminates the time-delay terms without introducing any uncertainties to the ***,an adaptive tracking controller has been constructed and all the signals in the closedloop system are *** results are provided to show the effectiveness of the proposed approach.
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