装备软件质量管理存在的问题及对策

由于信息技术的迅猛发展,计算机软件对充分发挥武器装备作战效能起到举足轻重的作用。本文就当前我军武器装备软件质量管理存在的问题进行了分析,并提出了相应的对策。     

基于灰色神经网络算法的煤矿瓦斯涌出量预测模型的研究

文章提出了一种采用灰色神经网络对煤矿瓦斯涌出量进行预测的方法,并在此基础上详细介绍了灰色神经网络瓦斯预测模型的构建过程,给出了应用实例。仿真结果表明,该模型具有预测精度高、所需样本少、计算简便等优点。     

A Dialectal Chinese Speech Recognition Framework

A framework for dialectal Chinese speech recognition is proposed and studied, in which a relatively small dialectal Chinese (or in other words Chinese influenced by the native dialect) speech corpus and dialect-related knowledge are adopted to transform a standard Chinese (or Putonghua, abbreviated as PTH) speech recognizer into a dialectal Chinese speech recognizer. Two kinds of knowledge sources are explored: one is expert knowledge and the other is a small dialectal Chinese corpus. These knowledge sources provide information at four levels: phonetic level, lexicon level, language level, and acoustic decoder level. This paper takes Wu dialectal Chinese (WDC) as an example target language. The goal is to establish a WDC speech recognizer from an existing PTH speech recognizer based on the Initial-Final structure of the Chinese language and a study of how dialectal Chinese speakers speak Putonghua. The authors propose to use context-independent PTH-IF mappings (where IF means either a Chinese Initial or a Chinese Final), context-independent WDC-IF mappings, and syllable-dependent WDC-IF mappings (obtained from either experts or data), and combine them with the supervised maximum likelihood linear regression (MLLR) acoustic model adaptation method. To reduce the size of the multi-pronunciation lexicon introduced by the IF mappings, which might also enlarge the lexicon confusion and hence lead to the performance degradation, a Multi-Pronunciation Expansion (MPE) method based on the accumulated uni-gram probability (AUP) is proposed. In addition, some commonly used WDC words are selected and added to the lexicon. Compared with the original PTH speech recognizer, the resulting WDC speech recognizer achieves 10-18% absolute Character Error Rate (CER) reduction when recognizing WDC, with only a 0.62% CER increase when recognizing PTH. The proposed framework and methods are expected to work not only for Wu dialectal Chinese but also for other dialectal Chinese languages and even other languages.     

物资调运问题的一种代数算法

物资调运是国民经济中一顷具有重要意义的工作。通常采用“图上作业法”或“表上作业法”。当收发站个数很多时,这种方法往往计算复杂、费时。这里介绍一种代数方法。它较其它方法简便。在实际计算中,即使收发站很多,也能迅速获得合理的调运方案。     

工程量清单环境下的工程造价控制

实行工程量清单计价是一种既符合我国市场竞争规则，又符合与国际惯例接轨的造价模式，是我国建设市场发展需要的必然结果。介绍了工程量清单环境下工程造价控制的要点及注意事项，重点是招标投标阶段的工程造价控制。     

赣州市水资源配置方案研究

依据水资源配置的三性原则,结合江西省赣州市经济自然状况,运用层次分析法与单元系统模糊优选模型相结合的方法构建赣州市初始水资源配置方案.     

公共建筑节能改造节能量核定思路

通过对国内外节能量确定方法的对比研究,开展了各方法在公共建筑节能量核定过程中的可行性探讨。在总结重庆地区公共建筑能耗特点基础上,得出重庆市既有公共建筑节能改造的重点应包括建筑围护结构、设备系统以及运行管理模式等。进一步分析发现,针对不同的改造对象,其能耗计算方法也不相同,建筑节能量无法用单一的指标进行描述,且节能量计算时的调整量难以确定,因此提出了将计算条件设定为改造项目设计工况(或相近工况),以行业标准为依据的核定思路,同时还应体现各项节能技术在节能量核定中的贡献率,探讨了单项节能效果与建筑整体节能量相结合的计算方法。     

基于Zigbee和GPRS相结合的粮食数量无线监控系统设计

在粮仓底面及侧壁排布压力传感器,通过压强值拟合出粮食数量.提出了一种将Zigbee短距离无线通信技术与GPRS相结合的远程粮情数据无线传输设计方案,完成了传感器网络中数据采集节点以及网络协调节点的硬件平台设计,并基于该平台开发了适合于粮情数据实时传输的通信协议及软件.测试表明,该系统完全可以测量粮仓中的储粮数量,测量误差不大于5％.     

城市雨水径流年污染总量核算

通过对蚌埠市新老城区地表雨水径流污染7个采样点、2场次降雨,共40个采样样本的采样与监测,获得了污染物浓度随降雨历时的变化过程;分析了地表污染程度、城市用地类型、雨水系统分流制式等因素对雨水径流污染程度的影响关系,对雨水径流污染特性进行了统计分析;在此基础上,提出了城市地表雨水径流年污染总量计算模式,初步核算了蚌埠市地表雨水径流年污染总量,评估了地表雨水径流污染对水环境的影响。     

Discounted multi-item inventory model via genetic algorithm with Roulette wheel selection,arithmetic crossover and uniform mutation in constraints bounded domains

Genetic Algorithm (GA) with different logic structures for price breaks has been developed and implemented for a multi-item inventory control system of breakable items like the items made of glass, mud, porcelain, etc. with all unit discount (AUD), incremental quantity discount (IQD) and a combination of these discounts. Here, AUD and IQD on purchasing price with two price breaks are allowed. Also, demand and breakability of the items are stock-dependent. Shortages are not allowed. Replenishment is instantaneous. Selling price is a mark-up of the purchasing cost. For storage, warehouse capacity is limited. For the present model, GA has been developed in real code representation using Roulette wheel selection, arithmetic crossover and uniform mutation. This algorithm has been implemented successfully to find the optimum order quantities for the above inventory control system to achieve the maximum possible profit. The algorithm and the inventory model have been illustrated numerically and some sensitivity analyses with respect to breakability and demand are presented.