Nanocomposites have been attracted great attentions in recent years. However, most efforts are focused on the preparation and layer structure modification and very few mentioned about the properties of molded parts. I...
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Nanocomposites have been attracted great attentions in recent years. However, most efforts are focused on the preparation and layer structure modification and very few mentioned about the properties of molded parts. In this study, molding conditions including melt temperature, mold temperature, packing pressure and injection speed on the mechanical properties particularly the weld line strength of injection molded Nylon6/Fluoromica nanocomposites were investigated. It is found that with the addition of nano-fluoromica particles the weld line strength becomes significantly weakens as compared to that of pure Nylon6 parts and non-welidline Nylon6/Fluoromica nanocomposites. As melt temperature, mold temperature, packing pressure and injection speed increases the weld line strength of molded nanocomposites also increases. Among processing conditions, packing pressure exhibits most significant effect on weld line strength.
A fundamental assumption of the TCP protocol is that packet losses indicate congestion on the network. This is a problem when using TCP over wireless links, because a noisy radio transmission may erroneously indicate ...
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Along with temperature changing, inner gas pressure of artillery liquid-air pressure equilibrator alters in a big range and deviates requiring value frequently, thereby resulting in excess hand-wheel force. In order t...
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Along with temperature changing, inner gas pressure of artillery liquid-air pressure equilibrator alters in a big range and deviates requiring value frequently, thereby resulting in excess hand-wheel force. In order to solve this problem, this paper studied a control system that could compensate air pressure automatically. Through realizing auto-adjustment of equilibrator inner pressure, this system control hand-wheel force effectively and improve operation capability and aim speed of artillery.
The cellular neural network (CNN) is a powerful technique to mimic the local function of biological neural circuits for real-time image and video processing. Recently, it is widely accepted that using a set of CNNs in...
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Due to the increasing complexity of industrial production systems, there exists a need for the development of efficient formal approaches for their analysis and control. Various methods have been proposed and examined...
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Due to the increasing complexity of industrial production systems, there exists a need for the development of efficient formal approaches for their analysis and control. Various methods have been proposed and examined from researchers, without being widely adopted for direct industrial use. In general, an industrial production line can be modelled as a Discrete Event System, but a more accurate representation would result, if we considered it as a real-time system. This paper presents a new mathematical abstraction for modelling real-time systems. In comparison with the conventional methods, the proposed method introduces new formulation parameters and handles variables in a different manner. It gives the opportunity to handle both discrete and real valued variables as inputs, outputs or both. A formal definition of the method is given and some examples of computations or runs of two typical examples are also presented.
This paper discusses walking control of Theta, an innovative humanoid walking robot equipped with a double spherical hip joint and a knee joint switchable between active and passive operation mode, which has been been...
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In this paper, we propose a diagnosis algorithm to detect faults of induction motor using the linear discriminant analysis. First, after reducing the input dimension of the current value vector measured at each period...
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In robotic operations where a manipulator is involved, it is well-known that the quantities measured by a wrist force/torque sensor are corrupted by the dynamics of the end effector and manipulator. To solve this prob...
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Robust stability of linear systems in presence of bounded uncertain time-varying time delays is studied. The time delay robustness problem is treated in the Integral Quadratic Constraint (IQC) framework. The stability...
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Robust stability of linear systems in presence of bounded uncertain time-varying time delays is studied. The time delay robustness problem is treated in the Integral Quadratic Constraint (IQC) framework. The stability criterion is formulated as frequency dependent linear matrix inequalities. The criterion can be equivalently formulated as a Semi-Definite Program (SDP) by applying Kalman-Yakubovich-Popov (KYP) lemma. Therefore, checking the criterion can be done efficiently by using various SDP solvers.
In this presentation, we show some counter-examples to a naive belief that the security of QKD is based on no-cloning theorem. One example is shown by explicitly proving that one can indeed generate an unconditionally...
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ISBN:
(纸本)0780391519
In this presentation, we show some counter-examples to a naive belief that the security of QKD is based on no-cloning theorem. One example is shown by explicitly proving that one can indeed generate an unconditionally secure key from Alice's two-photon emission part in "SARG04 protocol" proposed by V. Scarani et al., in Phys. Rev. Lett. 92, 057901 (2004). This protocol differs from BB84 only in the classical communication. It is, thus, interesting to see how only the classical communication of QKD protocol might qualitatively change its security. We also show that one can generate an unconditionally secure key from the single to the four-photon part in a generalized SARG04 that uses six states. Finally, we also compare the bit error rate threshold of these protocols with the one in BB84 and the original six-state protocol assuming a depolarizing channel.
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