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We propose and implement a simple quantum random number generation (QRNG) scheme based on the quantum phase fluctuation of a distributed feedback (DFB) laser. The probability distribution of the simulation result, got from the theoretical model we established, fits well with the experimentally measured data. Min-entropy estimation and Toeplitz-hashing randomness extraction are used to obtain the final...
To obtain the optimal attack position of antisubmarine helicopter in flight pickle, models to calculate airdrop parameters and torpedo's acquisition probability were built on the basis of analysis of flight pickle's attack process. Then simulations were made to analyze the effects of initial relative bearing and initial distance on torpedo's acquisition probability by using Monte Carlo method. The...
Rail transport, one of the most important means of transportation, is very meaningful to the development of national economy as well as the social welfare. While it provides people convenient and efficient services, it consumes huge amounts of energy. With increasing emphasis from society on energy-saving and emission-reducing, researches on energy efficient railway are of great significance, particularly...
Wireless sensor networks (WSN) is becoming large-scale. It's meaningful to gather sensor data quickly and efficiently. In this paper, we present a new approach to collect sensor data by distributed rateless coding. Rateless codes, such as Luby Transform (LT) codes have been proved possessing a very good property that receivers can decode all k original packets from arbitrary k(1+ε) encoded packets...
The accelerometer is the one of the core inertial measurement components in inertial navigation system. The velocity and position of transporting species are obtained by carrying on one and two integrals respectively to the accelerometers outputs. So, the precision of navigation system is obviously affected by the static error of accelerometer. In this paper, the static mathematics model of accelerometer...
The paper makes analysis of the investment risks towards new power shares in Chinese stock markets based on Markowitz mean-variance model using Monte Carlo simulation for solution. Five stocks from new power fields, including wind, nuclear, solar, biomass, and hydrogen, are used to form the portfolio and get the optimal weights dynamics from 2006 to 2009. It's found that the optimal investment weights...
The Disruption Tolerant Networks (DTNs) are especially useful in providing mission critical services such as in emergency networks or battlefield scenarios. However, DTNs are vulnerable to insider attacks, in which the legitimate nodes are compromised and the adversary nodes launch blackhole attacks by dropping packets in the networks. The traditional approaches of securing routing protocols can not...
The Disruption Tolerant Networks (DTNs) are vulnerable to insider attacks, in which the legitimate nodes are compromised and the adversary modifies the delivery metrics of the node to launch harmful attacks in the networks. The traditional detection approaches of secure routing protocols can not address such kind of insider attacks in DTNs. In this paper, we propose a mutual correlation detection...
This article presents a kind of adaptive robust control strategy for ball and beam system to the modeling uncertainty, and the dissipation theory to the bounded disturbances, the system is both strictly dissipative and asymptotically adaptive stable for all admissible uncertainties. The system's asymptotically stability and robustness are proved by using Lyapunov theory and dissipation theory . Simulation...
In this paper, we present a novel adaptive tap algorithm for partial update adaptive filters used in network echo cancellation. As the channel is typically long and sparse, it is unnecessary and inefficient to update all of the taps. Although partial update algorithms can be used to solve this problem, it is difficult to predetermine a fixed number of partial-update taps without a priori knowledge...
Chinese food is delicious but cooking Chinese food is a very complex process which involves in combing ingredients at the right time and temperature. In this paper, we present a multimedia technology for virtually cooking Chinese food. We focus on a popular Chinese food, shredded potato. We propose to use the theory from mechanics of materials to model shredded potato in its cooking process. The shredded...
Along with the development of science and technology, ARM technique obtained new breakthrough, resulting in the more serious threat to the radar on modern battlefield. Various methods have been proposed and used to counter an ARM, including that improve the mobile ability of radar, employ the radar system with dual (multiple) base, realize the time control of radar transmission signal, realize the...
Conventional controllers for the nonholonomic systems all stabilize the closed loop system to a target point. In this paper, considering the nonholonomic chained form system, a control design approach based on set stabilization idea is proposed. The proposed control laws can asymptotically stabilize the closed loop system to a set of given target points. First, for the first-order subsystem, a state...
Simulation technology can be utilized to assist many manufacturing enterprises to make decision in a high effect and concise way. The economic significance of logistics simulation for these profiled bar mills is undisputed in this context. The PSAO method, presented in this paper, introduced simulation into production optimization process and defined the elements of each step. Furthermore, basic requirements...
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