As the wildly application and rapidly development of cloud computing, the security of cloud technology has been raising more and more attention. The technology of access control in cloud plays the key role in the whol...
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ISBN:
(纸本)9781538662434
As the wildly application and rapidly development of cloud computing, the security of cloud technology has been raising more and more attention. The technology of access control in cloud plays the key role in the whole application system. This paper introduces the traditional theory and models of access control. Then, the unique challenges in cloud access control and the corresponding solutions are analyzed. On the basis of these researches, the Time-restrained Fine-grit Access control Model in Cloud is proposed. The features of this model are analyzed in the following. In the final of this paper is the summary of the whole research and the expectation in future research direction.
Sensors are used in various industries, ranging from aerospace, automotive, biomedicine, building, industrial automation, manufacturing, and process control to environmental monitoring. Traditionally, sensor outputs a...
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ISBN:
(纸本)0780366468
Sensors are used in various industries, ranging from aerospace, automotive, biomedicine, building, industrial automation, manufacturing, and process control to environmental monitoring. Traditionally, sensor outputs are analog signals, which are then fed to an instrumentation system for processing and display. The incorporating of microelectronics and microprocessor technologies into sensors has enabled greater functionality such as smart and digital communication capabilities to be built into the sensors. This enables the transitioning of sensors into the digital sensor domain. Sensor networking, a technology adopted from the networking of personal computers, is becoming pervasive in all areas of the industrial world and is causing a major shift in the measurement arena. The rapid development and emergence of smart sensor and networking technologies have made the networking of smart transducers (sensors or actuators) a very economical and attractive solution for measurement and control applications, but have created some standardization issues in industry. In this talk, the evolution and state of the sensor networking technologies will be discussed and the effort to bring about a set of standard interfaces to address this issue will be described.
Unmanned cameras, aircraft in flight, because the air Vortex, wind speed is not uniform, flight equipment of its own vibration and other factors influence makes video output screen fuzzy problem is presented based on ...
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ISBN:
(纸本)9781509064151;9781509064144
Unmanned cameras, aircraft in flight, because the air Vortex, wind speed is not uniform, flight equipment of its own vibration and other factors influence makes video output screen fuzzy problem is presented based on MEMS technology MPU-6050 real-time airborne electronic gyroscope stabilization systems design. The programme of in-flight video sequences can be horizontal, vertical movement and direction of rotation of non-intention(jitter) to compensate and keep operator movement of intent. Finally built a six-rotor aircraft platform to verify the effectiveness of the proposed programme.
Through the analysis of the force and moment of the robot, the kinetic equation of the robot is obtained, and the linearization model of the system can be obtained by linearization of small perturbation. According to ...
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ISBN:
(纸本)9781509064151;9781509064144
Through the analysis of the force and moment of the robot, the kinetic equation of the robot is obtained, and the linearization model of the system can be obtained by linearization of small perturbation. According to the principle of servo tracking optimal control, the expression of servo controller optimal controller is deduced. Then the principle of basic genetic algorithm and genetic operation are introduced. Finally, the genetic algorithm is applied to the optimization problem of the optimal controller parameters of the servo tracking, which reduces the blindness of the initial optimization and saves the computation time.
This paper is based on pneumatic *** pneumatic muscles have the characteristics of nonlinear, difficult modeling and repeated training of the aerodynamic muscles. Aiming at these characteristics and precise tracking o...
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ISBN:
(纸本)9781538662434
This paper is based on pneumatic *** pneumatic muscles have the characteristics of nonlinear, difficult modeling and repeated training of the aerodynamic muscles. Aiming at these characteristics and precise tracking of the training trajectory ,the model-free adaptive iterative learning control method for the pneumatic muscle is proposed. The adaptive iterative learning pneumatic muscle control method only designs the iterative learning law according to the input and output information during the iterative operation of the system, and achieves progressive tracking of the desired track of the pneumatic muscle.
In this paper, nonlinear dynamical equation of phase power system of injection locking oscillator is studied, and some useful conclusions about injection locking oscillator are obtained. Then, a method based on ADS so...
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ISBN:
(纸本)9781509064151;9781509064144
In this paper, nonlinear dynamical equation of phase power system of injection locking oscillator is studied, and some useful conclusions about injection locking oscillator are obtained. Then, a method based on ADS software is proposed to simulate and design oscillator with transistor. The 625 MHz oscillator was fabricated by simulation results, and the effectiveness of the method was verified.
In this paper, nonlinear exponential function series is designed that can generate one-directional and two-directional multi-scroll chaotic attractors in Chua system. Then, some dynamic characteristics of these multi-...
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ISBN:
(纸本)9781509064151;9781509064144
In this paper, nonlinear exponential function series is designed that can generate one-directional and two-directional multi-scroll chaotic attractors in Chua system. Then, some dynamic characteristics of these multi-scroll chaotic systems including phase diagram, equilibrium point, bifurcation diagram, Lyapunov exponent and Poincaré surface of section are analyzed by MATLAB. The numerical simulation is consistent with the theoretical analysis, which shows the effectiveness of this approach.
Image analogies algorithm proposed by Hertzmann uses the pixel search methods of approximate nearest neighbor search(ANN) and the coherence search. The algorithm of image analogies works well in image effects, but is ...
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ISBN:
(纸本)9781509064151;9781509064144
Image analogies algorithm proposed by Hertzmann uses the pixel search methods of approximate nearest neighbor search(ANN) and the coherence search. The algorithm of image analogies works well in image effects, but is slow to synthesize. In this paper, we use coherency sensitive hashing(CSH) algorithm to improve the searching and matching speed of the ANN algorithm in the premise of not reducing the synthesis effects of images. This algorithm increases the practicability of the image analogies.
A new decouple method of the heat transfer probe for measuring the gas-solid two-phase mass flow is *** gas-solid two-phase mass flow can be measured on-line by a heat transfer probe,and the temperature of the fluid i...
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ISBN:
(纸本)9781509064151;9781509064144
A new decouple method of the heat transfer probe for measuring the gas-solid two-phase mass flow is *** gas-solid two-phase mass flow can be measured on-line by a heat transfer probe,and the temperature of the fluid is useful for the data fusion to get high accuracy. the measure range of the temperature was expanded by the new circuit and higher accuracy achieved. Experiments are carried out in a specially designed laboratory scale pneumatic conveyor and the result shows that this method can perform compound measurement.
In measurement and control system of HPM, it increases transport distance of signal and improves EMC capability by optical fiber communication. The device principium is that distributed control and centralized managem...
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ISBN:
(纸本)9781509064151;9781509064144
In measurement and control system of HPM, it increases transport distance of signal and improves EMC capability by optical fiber communication. The device principium is that distributed control and centralized management. Distributed control system is divided into many control modules. Every module is independent in function. All data can be shared by PXI bus. So, it improves reliability and agilely and depress system complexity.
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