近年来,网络安全检测已经取得了很大的进步。然而,网络迅速的发展、流量分布的变化和数据样本中的噪声等问题都对现有方法提出了很大的挑战。针对此,提出了基于非对称分解卷积的网络安全检测(Network Security Detection Based on Asymm...近年来,网络安全检测已经取得了很大的进步。然而,网络迅速的发展、流量分布的变化和数据样本中的噪声等问题都对现有方法提出了很大的挑战。针对此,提出了基于非对称分解卷积的网络安全检测(Network Security Detection Based on Asymmetric Decomposed Convolution,ADC-NSD)方法。ADC-NSD方法根据对网络连接数据的训练与学习,生成区别常态与危险状态的安全检测模型,通过对卷积神经网络中的卷积核进行分解,完成对数据进行解析和检测。最后,以KDDCUP99为测试数据集,将ADC-NSD方法与其他机器学习方法进行比较。实验结果表明,ADC-NSD方法能有效地解决网络安全检测问题,总体精确率为98.72%,准确率为99.92%,召回率为94.61%,F1值为97.19%。展开更多
Painleve property and infinite symmetries of the （2＋1）-dimensional higher-order Broer-Kaup （HBK） system are studied in this paper. Using the modified direct method, we derive the theorem of general symmetry gro.u...Painleve property and infinite symmetries of the （2＋1）-dimensional higher-order Broer-Kaup （HBK） system are studied in this paper. Using the modified direct method, we derive the theorem of general symmetry gro.ups to （2＋1）-dimensional HBK system. Based on our theorem, some new forms of solutions are obtained. We also find infinite number of conservation laws of the （2＋1）-dimensional HBK system.展开更多
Under the travelling wave transformation, some nonlinear partial differential equations such as Camassa-Holm equation, High-order KdV equation, etc., are reduced to an integrable ODE expressed by u＂ ＋p（u）（u＇）^2...Under the travelling wave transformation, some nonlinear partial differential equations such as Camassa-Holm equation, High-order KdV equation, etc., are reduced to an integrable ODE expressed by u＂ ＋p（u）（u＇）^2 ＋ q（u） = 0 whose generai solution can be given. Furthermore, combining complete discrimination system for polynomiai, the classifications of all single travelling wave solutions to these equations are obtained. The equation u＂＋p（u）（u＇）^2＋q（u） = 0 includes the equation （u＇）^2 = f（u） as a special case, so the proposed method can be also applied to a large number of nonlinear equations. These complete results cannot be obtained by any indirect method.展开更多
Oxalic acid is a weak and unsymmetrical bi-basic acid. There exist dissociation and association equilibria among the species in aqueous solution. The molar conductivity of the solution is the sum of the ionic contribu...Oxalic acid is a weak and unsymmetrical bi-basic acid. There exist dissociation and association equilibria among the species in aqueous solution. The molar conductivity of the solution is the sum of the ionic contributions.Based on this idea, a new prediction equation of ionic conductivity was proposed at low concentration. The molar conductivities of the solution and its relevant ions were calculated respectively. The results obtained were in good agreement with those from experiments and the Quint-Viallard equation.展开更多
A general complex delayed dynamical network model with asymmetric coupling matrix is considered in this paper. For reducing the conservativeness of synchronization criteria, several novel synchronization stability con...A general complex delayed dynamical network model with asymmetric coupling matrix is considered in this paper. For reducing the conservativeness of synchronization criteria, several novel synchronization stability conditions are presented by using delay decomposition methods. Numerical examples which are widely used to study delay-dependent synchronization stability are given to illustrate the effectiveness of the proposed methods.展开更多
文摘近年来,网络安全检测已经取得了很大的进步。然而,网络迅速的发展、流量分布的变化和数据样本中的噪声等问题都对现有方法提出了很大的挑战。针对此,提出了基于非对称分解卷积的网络安全检测(Network Security Detection Based on Asymmetric Decomposed Convolution,ADC-NSD)方法。ADC-NSD方法根据对网络连接数据的训练与学习,生成区别常态与危险状态的安全检测模型,通过对卷积神经网络中的卷积核进行分解,完成对数据进行解析和检测。最后,以KDDCUP99为测试数据集,将ADC-NSD方法与其他机器学习方法进行比较。实验结果表明,ADC-NSD方法能有效地解决网络安全检测问题,总体精确率为98.72%,准确率为99.92%,召回率为94.61%,F1值为97.19%。
基金The project supported by the Natural Science Foundation of Shandong Province of China under Grant No. 2004 zx 16
文摘Painleve property and infinite symmetries of the （2＋1）-dimensional higher-order Broer-Kaup （HBK） system are studied in this paper. Using the modified direct method, we derive the theorem of general symmetry gro.ups to （2＋1）-dimensional HBK system. Based on our theorem, some new forms of solutions are obtained. We also find infinite number of conservation laws of the （2＋1）-dimensional HBK system.
文摘Under the travelling wave transformation, some nonlinear partial differential equations such as Camassa-Holm equation, High-order KdV equation, etc., are reduced to an integrable ODE expressed by u＂ ＋p（u）（u＇）^2 ＋ q（u） = 0 whose generai solution can be given. Furthermore, combining complete discrimination system for polynomiai, the classifications of all single travelling wave solutions to these equations are obtained. The equation u＂＋p（u）（u＇）^2＋q（u） = 0 includes the equation （u＇）^2 = f（u） as a special case, so the proposed method can be also applied to a large number of nonlinear equations. These complete results cannot be obtained by any indirect method.
文摘Oxalic acid is a weak and unsymmetrical bi-basic acid. There exist dissociation and association equilibria among the species in aqueous solution. The molar conductivity of the solution is the sum of the ionic contributions.Based on this idea, a new prediction equation of ionic conductivity was proposed at low concentration. The molar conductivities of the solution and its relevant ions were calculated respectively. The results obtained were in good agreement with those from experiments and the Quint-Viallard equation.
基金This research is supported by the National Natural Science Foundation of China under Grant Nos. 61075065, 60474029, 60774045, 60634020 and the Hunan Provincial Innovation Foundation for Postgraduate.
文摘A general complex delayed dynamical network model with asymmetric coupling matrix is considered in this paper. For reducing the conservativeness of synchronization criteria, several novel synchronization stability conditions are presented by using delay decomposition methods. Numerical examples which are widely used to study delay-dependent synchronization stability are given to illustrate the effectiveness of the proposed methods.
