ID 原文 译文
56398 本文建立的模型可由商业优化软件CPLEX直接求解,并保证运行调整方案的实时性.模型还讨论了取消车次、延迟发车和降速运行这3种调度策略对总延误时间的影响,最后以京沪高铁实例进行验证. Themodel established in this paper can be directly simulated using commercial optimization software CPLEX, andthe scheduling scheme is guaranteed to be in real time. This paper also discusses the influence of the threeadjustment strategies, i. e. , train cancellation, departure delay, and deceleration, on the total delay time. Finally,the model is verified using an example of the Beijing-Shanghai high-speed railway. Results show that the model isreasonable and effective.
56399 验证结果表明该模型是合理有效的,通过模型求解能对实际问题给出合理的调度方案并提高列车终到正点率. By implementing the model, a reasonable scheduling scheme can be achieved to addresspractical problems, and the punctuality rate of trains can be improved.
56400 本文针对一类具有执行器和状态约束的多输入多输出非线性系统,研究了基于高阶滑模观测器的滑模控制和稳定性分析问题. In this paper, the problems of state estimation and saturated control based on a high-order slidingmode observer (HOSMO) are evaluated for a class of multi-input and multi-output (MIMO) nonlinear systemsunder actuator and state constraints.
56401 通过对该系统进行逆变换并考虑其控制输入系数矩阵的对合跨度分布,我们设计了一类高阶滑模观测器用于实现系统的状态估计,其中,采用鲁棒精确微分器分析了所得误差估计系统的收敛性. For the state estimation of nonlinear systems, an estimation error systemis established based on HOSMO and the convergence of the error system is analyzed using a robust exact differ?entiator. Then, a control scheme of the second-order sliding mode (SOSM) using the information from HOSMOis designed for uncertain nonlinear affine systems with arbitrary relative degrees.
56402 然后,利用原系统的部分状态变量设计了二阶滑模控制律,进而分别分析了在执行器/状态无约束和硬约束情形下的系统有限时间稳定性,同时,依据最大吸引域和几何分析法分析了系统状态在滑模阶段的运动轨迹. The finite-time stability of theestimated system is analyzed using the designed SOSM control law under both unconstrained and constrainedactuators and states. Accordingly, the geometric analysis of the resulting sliding motions is performed to depictthe maximal attraction domain of the sliding motions.
56403 最后,通过两个仿真算例验证了本文所提出的控制方法的有效性. Finally, two simulation examples are provided to validatethe effectiveness of the presented methods.
56404 高光谱图像(HSI)的高维度、高冗余等特性给其传输和处理带来了极大的挑战. The high dimensionality and redundancy properties of hyperspectral image (HSI) constitute greatchallenges for transmission and process.
56405 近年来基于压缩感知的HSI重建受到重视并成为一前沿问题,在这一领域中有效挖掘HSI的稀疏先验成为提高其重建质量的一个关键.本文首先定义了HSI波段组的"光谱维面",并以此为切入点对HSI光谱维的结构相关性进行研究,获得了如下结论:一是HSI光谱维面的纹理分布较空间域更为简单和均匀,且其纹理的对比度低、平稳度高,更容易被稀疏表达,二是在HSI光谱维面,与参考块相邻的搜索区域内存在着一定数量的与参考块具有较高相似度的光谱曲线块;进一步确定了基于光谱维面的HSI光谱维结构相关性的涵义,并提出了相应的稀疏测量模型;在此基础上,通过整合空间维非局部相关性与光谱维结构相关性的稀疏表示,提出了稀疏模型S-SCo SM,并以其为稀疏约束先验构建了HSI的稀疏重构模型.大量实验表明,所提出的稀疏模型S-SCo SM从空间维和光谱维两个角度更深层次地挖掘了HSI的相关性,获得了更为充分和有效的HSI稀疏约束先验,使HSI的重构质量得到进一步提升,在有效提高重构波段图像空间信息质量的同时,很好地保持了波段组的光谱属性. Recently, HSI reconstruction based on compressed sensing has receivedincreasing attention and has become a frontier problem. Effectively exploiting the sparse prior of HSI is crucialto improve the reconstruction quality. In this paper, the spectral dimension plane of the HSI band group isdefined, and the structural correlation of HSI spectral dimension is studied. The following conclusions can beobtained. First, the texture distribution of the HSI spectral dimension is simpler and more uniform than thatof the HIS spatial domain, and its texture exhibits low contrast and high properties, thus simplifying the sparserepresentation process. Second, in the HSI spectral dimension plane, the search area adjacent to the referenceblock has a certain number of spectral curve blocks that are highly similar to the reference block. Based on thisobservation, the structure correlation of the HIS spectral dimension is defined, and a sparse measurement modelis proposed. Finally, the sparse model S-SCoSM is proposed by integrating the sparse representation of spatialdimension nonlocal correlation and the spectral dimension structure correlation. The sparse reconstruction modelof HSI is constructed using this sparse constrain prior. Experimental results show that by further exploring thecorrelation of HSI from the viewpoint of spatial and spectral domains, the proposed sparse model S-SCoSM obtainsa more adequate and effective HSI sparse constraint prior; hence, the reconstruction quality of HSI is improved. Consequently, the spatial information quality of the reconstructed band image can be effectively improved as wellas the spectral attributes of band groups can be well maintained.
56406 近年来,网络多媒体迅猛发展. Recently, network multimedia has undergone rapid developments.
56407 相较于传统固定网络多媒体内容服务,兴起的移动化多媒体服务中的用户行为发生了根本变化. Compared with traditional end?to-end multimedia content services, user behaviors in emerging mobile multimedia services have experiencedfundamental changes.