高速公路信息系统工程实施概要（上）

就我国高速公路信息系统工程的监控、收费和通信三大系统分别说明信息系统工程对高速公路运营管理不可或缺的技术支持作用。以某一条封闭式高速公路为例,具体阐述在监控分中心管理下信息采集与信息提供方法,针对过路收费制式介绍其停车收费和不停车收费及实际货币付费和“磁卡”付费的方式,以及对高速公路专业通信系统的网路组织、传输与交换设备的选择和风管都作了一定报道。     

GSM900／GSM1800双频网技术解决方案初步探讨

介绍了GSM1800的特点,并从网络设计方面对双频网的组网方式、覆盖方式、话务控制、切换算法等技术解决方案进行了初步探讨。     

竞赛活动促进电子信息类专业课程的改革

本文从三个方面论述了是民子设计竞赛对教学改革 和课程建设的促进作用。结合本校的实践,提出了重视活动、促进课程教学改革和扩大电子设计竞赛影响的一些思路和做法。     

镧系四元混合配体配合物[Ce(CH2ClCOO)2(NO3)(phen)(H2O)]2的晶体结构、芳环堆积效应和2D氢键网络

The quaternary complex, ［Ce(CH2ClCOO)2(NO3)(phen)(H2O)］2, was synthesized. Interestedly, the title compound is a dimer comparing with the 1D polymer ［La(CH2ClCOO)2(NO3)(phen)*(H2O)］n and powder compound ［Nd(CH2ClCOO)2(NO3)(phen)］. In the title compound there is a monodentate NO-3, which is a first example in the all synthesized quaternary mixed anion complexes, and the NO-3 extended the complex into a 2D network with water from other molecules by inter-molecular hydrogen bonds. The intermolecular hydrogen bonds lead to the weaker Ce—O(COO), Ce—O(NO3) and Ce—N bonds comparing with other quaternary mixed anion complexes of cerium. Also the stacking effect, which makes the compound more stable in the situation of weaker Ce—O and Ce—N bonds, was first found in the series compounds.     

Learning in Convolutional Neural Networks Accelerated by Transfer Entropy

Recently, there is a growing interest in applying Transfer Entropy (TE) in quantifying the effective connectivity between artificial neurons. In a feedforward network, the TE can be used to quantify the relationships between neuron output pairs located in different layers. Our focus is on how to include the TE in the learning mechanisms of a Convolutional Neural Network (CNN) architecture. We introduce a novel training mechanism for CNN architectures which integrates the TE feedback connections. Adding the TE feedback parameter accelerates the training process, as fewer epochs are needed. On the flip side, it adds computational overhead to each epoch. According to our experiments on CNN classifiers, to achieve a reasonable computational overhead–accuracy trade-off, it is efficient to consider only the inter-neural information transfer of the neuron pairs between the last two fully connected layers. The TE acts as a smoothing factor, generating stability and becoming active only periodically, not after processing each input sample. Therefore, we can consider the TE is in our model a slowly changing meta-parameter.     

清江水布垭水电站地下厂房岩体质量评价及反馈设计研究

考虑地下水 ,地应力及结构面产状和岩溶、剪切带发育的特点修正 ,确定了水布垭水电站地下工程洞室工程岩体质量 ,进行了地下工程的 RMR分类研究 ,讨论了与水布垭地下工程反馈设计及信息法施工的有关问题。     

一种分布式对象存储在巡检系统中的研究应用

随着通信技术的快速发展和智能设备的普及,网络规模和网元数量的不断增长,通信设备巡检任务成倍增加,给巡检系统的存储带来了巨大挑战,传统文件存储方式已无法满足要求.本文通过研究分布式对象存储,基于MinIO设计实现了一种新的巡检系统存储方案,可有效提升系统存储效率和可扩展性.该方案已经实际应用,支撑常态化巡检工作,对于网络...     

A dynamic bandwidth control scheme of VP in ATM networks

This paper proposes an efficient adaptive bandwidth allocation scheme of virtual paths. The bandwidth of a virtual path is dynamically adjusted according to the link residual capacity. The scheme can remarkably reduce the load on node processing and simplify the network architecture, while keeping higher transmission efficiency. The excellent performance is proved by detailed theoretical analyses.     

自动目标识别(ATR)可靠性研究

对同类目标畸变不变的正确识别率与不同类目标分类误识别率是衡量一个自动目标识别 (ATR)系统的两个最重要性能指标。但在实际应用中 ,ATR系统所获取的外场的目标与背景总是处于随时间不断变化的条件下 ,与系统所存储的参考目标通常都不会一致 ,从而导致相关识别SNR劣化。特别对于多目标识别与不同类目标的区分 ,常规的相关门限判决方法会造成很大的误识别 ,大大影响了ATR系统的识别可靠性。本文采用人工神经网络 (ANN)与模糊逻辑技术 ,对相关信号与噪声进行实时数字后处理 ,通过对信号与噪声强度分布等高线而不仅仅是强度的识别 ,大大提高了ATR系统的识别可靠性 ,改善了识别效率。     

Solaris 2.x下路由的设置

文章详细论述了Solaris2.x平台各种情况下路由的具体设置与调试方法。