In this paper, we consider the optimal problem of channels sharing with het-erogeneous traffic （real-time service and non-real-time service） to reduce the data conflict probability of users. Moreover, a multi-dimens...In this paper, we consider the optimal problem of channels sharing with het-erogeneous traffic （real-time service and non-real-time service） to reduce the data conflict probability of users. Moreover, a multi-dimensional Markov chain model is developed to analyze the performance of the proposed scheme. Meanwhile, performance metrics are derived. Numerical results show that the proposed scheme can effectively reduce the forced termination probability, blocking probability and spectrum utilization.展开更多
This paper points out that a successful numerical simulation is to construct a correct conceptional model which is very dose to the natural condition. A new model, two dimensional coupled three dimensional model (2D -...This paper points out that a successful numerical simulation is to construct a correct conceptional model which is very dose to the natural condition. A new model, two dimensional coupled three dimensional model (2D -3D ) is presented in the Present paper,which is the most suitable one for the dual - structured - aquifer system. An example of Wenyinghu area is shown.By using the 2D-3D model, a satisfied result of the simulated area is achieved.展开更多
基于二维Markov链的瞬时分析理论提出了一种研究控制器局域网(Controller Area Network,CAN)中周期性报文传输的解析模型。通过与仿真环境中周期性报文传输统计数据的对比,验证了建立该模型的相关假设与各项参数设置的正确性及模型的有...基于二维Markov链的瞬时分析理论提出了一种研究控制器局域网(Controller Area Network,CAN)中周期性报文传输的解析模型。通过与仿真环境中周期性报文传输统计数据的对比,验证了建立该模型的相关假设与各项参数设置的正确性及模型的有效性。该模型可用于分析CAN网络中时间触发的周期性报文的传输可能造成的阻塞延时。展开更多
图片自动语义标注是基于内容图像检索中很重要且很有挑战性的工作。本文提出了一种基于Boosting学习的图片自动语义标注方法,建立了一个图片语义标注系统BLIR(boosting for lingu istic indexing im age retrievalsystem)。假设一组具...图片自动语义标注是基于内容图像检索中很重要且很有挑战性的工作。本文提出了一种基于Boosting学习的图片自动语义标注方法,建立了一个图片语义标注系统BLIR(boosting for lingu istic indexing im age retrievalsystem)。假设一组具有同一语义的图像能够用一个由一组特征组合而成的视觉模型来表示。2D-MHMM(2维多分辨率隐马尔科夫模型)实际上就是一种颜色和纹理特殊组合的模板。BLIR系统首先生成大量的2D-MHMM模型,然后用Boosting算法来实现关键词与2D-MHMM模型的关联。在一个包含60 000张图像的图库上实现并测试了这个系统。结果表明,对这些测试图像,BLIR方法比其他方法具有更高的检索正确率。展开更多
基金supported in part by the National Natural Science Foundation of China(60972016,61231010)the Funds of Distinguished Young Scientists(2009CDA150)+1 种基金China-Finnish Cooperation Project(2010DFB10570)Specialized Research Fund for the Doctoral Program of Higher Education(20120142110015)
文摘In this paper, we consider the optimal problem of channels sharing with het-erogeneous traffic （real-time service and non-real-time service） to reduce the data conflict probability of users. Moreover, a multi-dimensional Markov chain model is developed to analyze the performance of the proposed scheme. Meanwhile, performance metrics are derived. Numerical results show that the proposed scheme can effectively reduce the forced termination probability, blocking probability and spectrum utilization.
文摘This paper points out that a successful numerical simulation is to construct a correct conceptional model which is very dose to the natural condition. A new model, two dimensional coupled three dimensional model (2D -3D ) is presented in the Present paper,which is the most suitable one for the dual - structured - aquifer system. An example of Wenyinghu area is shown.By using the 2D-3D model, a satisfied result of the simulated area is achieved.
文摘基于二维Markov链的瞬时分析理论提出了一种研究控制器局域网(Controller Area Network,CAN)中周期性报文传输的解析模型。通过与仿真环境中周期性报文传输统计数据的对比,验证了建立该模型的相关假设与各项参数设置的正确性及模型的有效性。该模型可用于分析CAN网络中时间触发的周期性报文的传输可能造成的阻塞延时。
文摘图片自动语义标注是基于内容图像检索中很重要且很有挑战性的工作。本文提出了一种基于Boosting学习的图片自动语义标注方法,建立了一个图片语义标注系统BLIR(boosting for lingu istic indexing im age retrievalsystem)。假设一组具有同一语义的图像能够用一个由一组特征组合而成的视觉模型来表示。2D-MHMM(2维多分辨率隐马尔科夫模型)实际上就是一种颜色和纹理特殊组合的模板。BLIR系统首先生成大量的2D-MHMM模型,然后用Boosting算法来实现关键词与2D-MHMM模型的关联。在一个包含60 000张图像的图库上实现并测试了这个系统。结果表明,对这些测试图像,BLIR方法比其他方法具有更高的检索正确率。
