GSM／WLAN一体化校园网深度覆盖的实现

考虑到高校园区用户存在对多种电信业务的使用需求，以及对高质量通信信号的要求：如何实现2G、3G、WLAN和互联网业务的一体化接入方式并改善其信号覆盖深度成为校园网建设的重点和难点。文章探讨了一体化校园网深度覆盖的具体需求．并阐述了建设一体化校园网的方式和提升其信号深度覆盖的主要手段，文中还列举了具体的解决方案并彳阜价了一体化局域网的价值。     

Multiple eigenspaces

In this paper, we propose a novel self-organizing framework to construct multiple, low-dimensional eigenspaces from a set of training images. Grouping of images is systematically and robustly performed via eigenspace-growing in terms of low-dimensional eigenspaces. To further increase the robustness, the eigenspace-growing is initiated independently with many small groups of images—seeds. All these grown eigenspaces are treated as hypotheses that are subject to a selection procedure eigenspace-selection, based on the MDL principle, which selects the final resulting set of eigenspaces as an efficient representation of the training set, taking into account the number of images encompassed by the eigenspaces, the dimensions of the eigenspaces, and their corresponding residual errors. We have tested the proposed method on a number of standard image sets, and the significance of the approach with respect to the recognition rate has been demonstrated.     

多信道多业务并行冲突分解算法研究

文章提出了一种多信道多业务并行冲突分解算法,对随机争用多址访问系统中的冲突分解进行了研究,并给出了该并行算法的冲突分解平均时隙数和系统吞吐量的解析式,其结果与计算机仿真实验相吻合。     

改进的混合多输入多输出系统收发方案

为在频谱利用率和可靠性之间取得折中,提出一种高效低复杂度的发射接收方案,将空间复用和空间分集相结合,形成一个STBC-VBLAST混合编码的多输入多输出系统。利用线性疏散码的结构特点,在发射端以等效的垂直分层空时码子层发送信号,接收端使用基于排序的QR分解的连续干扰抵消的算法进行译码,同样可以获得较好的复用和分集增益。仿真结果表明,该方案的误码率性能优于其他检测方案,可降低计算复杂度。     

Tracking Multiple Occluding People by Localizing on Multiple Scene Planes

Occlusion and lack of visibility in crowded and cluttered scenes make it difficult to track individual people correctly and consistently, particularly in a single view. We present a multi-view approach to solving this problem. In our approach we neither detect nor track objects from any single camera or camera pair; rather evidence is gathered from all the cameras into a synergistic framework and detection and tracking results are propagated back to each view. Unlike other multi-view approaches that require fully calibrated views our approach is purely image-based and uses only 2D constructs. To this end we develop a planar homographic occupancy constraint that fuses foreground likelihood information from multiple views, to resolve occlusions and localize people on a reference scene plane. For greater robustness this process is extended to multiple planes parallel to the reference plane in the framework of plane to plane homologies. Our fusion methodology also models scene clutter using the Schmieder and Weathersby clutter measure, which acts as a confidence prior, to assign higher fusion weight to views with lesser clutter. Detection and tracking are performed simultaneously by graph cuts segmentation of tracks in the space-time occupancy likelihood data. Experimental results with detailed qualitative and quantitative analysis, are demonstrated in challenging multi-view, crowded scenes.     

Recovering Multiple View Geometry from Mutual Projections of Multiple Cameras

In this paper, we analyze the computation of epipolar geometry in some special cases where multiple cameras are projected each other in their images. In such cases, epipoles can be obtained directly from images as the projection of cameras. As the result, the epipolar geometry can be computed from less image correspondences with higher stability. In this paper, we analyze the number of corresponding points required for computing bifocal, trifocal and quadrifocal tensors linearly in the case where cameras are projected mutually. We next show a practical linear method for computing multifocal tensors by using the mutual projection of cameras. The degenerate configurations of points and cameras is also studied, and it is shown that some degenerate configurations in general cases are no longer degenerate under the mutual projection of cameras.     

多平台多数据库的通用CGI程序设计

本文研究Ｊａｖａ、ＪａｖａＳｃｒｉｐｔ、Ｓｅｒｖｌｅｔ、ＩＳＡＰＩ、ＮＳＡＰＩ、ＡｃｔｉｖｅＸ以及ＡＳＰ等Ｗｅｂ技术 缺点,并与ＣＧＩ技术作了比较和分析,提出了使用模板文件方法,设计运行于多种操作系统上并能访问多种数据库的通用ＣＧＩ程序的思路。     

Multiple data structuring

Possibilities of working with data possessing several structures are discussed. Such work is shown to require development of language support tools.     

多版本TPR_TREE

为了解决连续移动物体的全部历史空间信息的索引问题,综合TR树和TPR树的结构,提出了一种新的时空索引结构——多版本TPR树(MVTPR),对MVTPR的结构和操作进行了说明,并通过实例形象化描述了MVTPR的结构和操作,指出了下一步研究方向。     

Multiple Spin-Block Decisions

We study the online problem of holding a number of idle threads on an application server, which we have ready for processing new requests. The problem stems from the fact that both creating/deleting and holding threads is costly, but future requests and completion times are unpredictable. We propose a practical scheme of barely random discrete algorithms with competitive ratio arbitrarily close to e/(e - 1), where e ≈ 2.718 is Euler's number. The competitive ratio is sharply concentrated for any input. The results are generalizations of the well-known result for the rent-to-buy problem.     

Multiple threshold perceptron

As a natural generalization of the linear perceptron with a single threshold element, we define a multiple threshold perceptron which learns a particular type of piecewise linear discriminant set of functions, namely those that are describable by a set of parallel hyperplanes. We also suggest a learning method in the form of an error-correction procedure, and a kind of gradient method that seeks the minimum of a rational criterion function. Experimental results show that the proposed procedure is effective.     

Consider Multiple Solutions

Design teams rarely consider multiple solution ideas before committing to one. They often forget that an even better idea could be just around the corner, and consider alternative ideas only when they don't like the current one. Using sketchboarding, design studio, or a combination of these two techniques can let teams quickly ideate over many solutions. They then have a chance to arrive at a solution that no one individual had thought of.     

多版本TPR树

为了解决连续移动物体的全部历史空间信息的索引问题,该文综合TR树和TPR树的结构,提出了一种新的时空索引结构—多版本TPR树(MultipleVersionTPR-tree),对MVTPR的结构和操作进行了说明,并通过实例描述了MVTPR的结构和操作,最后指出了下一步研究的问题。     

Multiple online auctions

Considers how the rapid transition of trade to the Internet raises critical questions about how well the time-honored methodologies, strategies, and processes that buyers and sellers use translate to the online world. Do Internet consumers effectively evaluate all available options? How do their decisions translate to seller profits? Determining whether consumer participation in multiple auctions yields optimal results offers one benchmark for evaluating the overall benefits of e-commerce.     

一种多路由器多接口的移动网络多宿方案

为了解决移动网络中移动路由器易出现的单点失效和性能瓶颈的问题,针对现有多宿方案不能同时处理多路由器和多接口混合多宿,以及需要修改网络内部节点等不足,提出了一种可以适用于混合多宿场景的移动网络多宿方案MM-NEMO。该方案定义了移动路由器外部接口常用的重要属性以及这些属性的维护方法,并通过多播技术在移动路由器之间动态地交换接口属性,使移动网络中所有外部接口的信息都以分布式存储的形式保存在每个移动路由器中;然后移动路由器对内部节点发起的通信使用基于信息熵的多属性决策机制进行最佳接口的选择、分配或重定向。特性分析表明,该方案可以同时满足多路由器、多接口以及混合场景的需求,并且对网络内部节点保持透明。仿真结果表明,该方案具有较低的端到端时延和较高的总吞吐量。     

Multiple Instance Learning with Multiple Objective Genetic Programming for Web Mining

This paper introduces a multi-objective grammar based genetic programming algorithm, MOG3P-MI, to solve a Web Mining problem from the perspective of multiple instance learning. This algorithm is evaluated and compared to other algorithms that were previously used to solve this problem. Computational experiments show that the MOG3P-MI algorithm obtains the best results, adds comprehensibility and clarity to the knowledge discovery process and overcomes the main drawbacks of previous techniques obtaining solutions which maintain a balance between conflicting measurements like sensitivity and specificity.