使用约束条件支持领域本体的重用

在利用领域本体知识库(DOKB)中已有领域本体构造新的领域模型或领域本体后，知识工程师需要检查新领域本体以确保其符合规则前提。使用约束务件可以令计算机自动解决这个问题，从而减少知识工程师的工作量,并加快知识的重用过程。     

基于卷积神经网络的行人目标检测系统设计

为获得最直观的行人目标检测结果,避免运动姿态不确定性对实时检测造成的影响,设计基于卷积神经网络的行人目标检测系统。以CNN计算框架作为硬件结构主体,分级连接目标传感器与神经型卷积分类器,按照并行检测原理及卷积神经架构搭建检测体系结构。建立训练文件体系,通过迎合目标训练环境的方式,配置必要的检测文件参数,完成待检测行人目标的样本训练处理。在检测节点架构中,规定与访问接口关联的配置条件,借助增设的模块复用加速结构,直接获取行人目标检测结果,实现行人目标的样本重构,完成基于卷积神经网络的行人目标检测系统设计。实验结果表明,与PCA、SVM算法相比,应用卷积神经网络型检测系统后,单位时间内的行人目标检测量达到9.6×109T,目标数据堆积速率降低至1.14×109T/s,能够直观获取行人目标检测结果,有效抑制了运动姿态不确定性对系统实时检测的影响。     

TATB胺化原理与底物的研究新进展

对TATB合成路线从理论上进行了分析，概述了近期国内外TATB合成研究中，采用三取代苯为前驱体。合成、VNS直接胺化合成和利用报废火药合成3类合成方法的研究进展，结合TATB合成过程中硝化、胺化反应机理．探讨前驱体结构、胺化试剂等对制备条件的影响，并对合成方法进行综合评价。     

基于变频器和PLC的冷凝水回收自动化

本文利用PLC、变频器自动控制，实现冷凝水利用，以具体实例介绍改造的步骤及意义。     

Quality and safety aspects of reusable plastic food packaging materials: A European study to underpin future legislation

The objective of this study was to develop a comprehensive package of quality assurance criteria for use by industry and regulatory authorities for ensuring the quality and safety-in-use (sensory, microbiological and chemical) of reused plastics for food packaging. The study included thermal degradation effects, flavour carry-over caused by flavour and off-flavour substances, the influence of washing processes on the materials, and the efficiency of washing processes in removing offflavour substances and surrogate substances representing misuse chemicals as might be put in bottles by consumers. The microbial safety of the refillable plastic articles in relation to commercial washing processes and the industrial procedures applied has also been investigated. Lastly, the suitability of laboratory procedures using strips of bottle material for predicting the sorption and washing properties of refillable plastic bottles has been studied. In general it is concluded that reuse of the articles does not significantly influence any of the properties investigated. Neither the chemical, physical nor surface properties seem to be significantly influenced by repeated washing. It can be concluded, however, that it is very likely that most of the articles investigated will cause flavour carry-over to a new filling if they are contaminated with strongly flavoured products. Finally it can be concluded that the procedures evaluated can serve as a basis for future legislation on refillable articles, but for several procedures (like quick predictive testing with strips) more investigation is required to create a more solid basis.     

基于模型工程的C4ISR系统仿真建模研究

现代作战模拟系统的不断发展对C4ISR系统的效能评估提出了更高的要求,为了进一步实现C4ISR系统效能评估模型的互通、互联、互操作等特性,提出了C4ISR系统效能评估模型的建模程式和效能评估模型的描述规范、表述规则、评价标准、维护方法和管理制度,从而为C4ISR系统效能评估提供规范的建模支撑技术,研究相关关键技术,并验证C4ISR系统效能评估模型的可靠性,组建优质模型资源库,实现C4ISR系统效能评估模型的可重用性。     

气田中浅层地层水压裂液体系研究

为了降低川西气田地层产出水带来的环境压力,在地层水的水质分析基础上,研制了适用于川西中浅层气藏的地层水瓜胶压裂液体系。该地层水压裂液体系在45 ℃、170s-1条件下剪切60min,黏度可保持在100mPa·s左右,伤害率23.86%,破胶液表面张力27.82mN/m,防膨率87.5%,残渣质量浓度518mg/L,具有破胶彻底、流变性好等优点。在什邡38-2井和什邡38-4井的现场试验取得了显著的增产效果,分别获得天然气产量达1.14×104 m3/d和1.68×104 m3/d,实现了气田地层产出水的重复利用。     

Low risk meat and bone meal (MBM) bottom ash in mortars as sand replacement

This paper presents the physical, chemical and mineralogical characteristics of meat and bone meal bottom ash (MBM-BA) from low-risk sources. It also gives a first evaluation, from a technical and an environmental point of view, of its potential of use as sand in cement-based materials. Results show that MBM-BA has the physical characteristics of a fine sand. It has low friability but high water absorption, which leads to a recommended use of less than 30% MBM-BA as sand replacement in mortars and the use of a superplasticizer. The compressive strength of mortar containing 17% of MBM-BA is similar to that of a reference mortar and the leaching behavior resembles that of the reference mortar without residue. These preliminary results lead us to believe that low-risk MBM-BA could be used in cement-based materials and present a promising way of reusing this residue.     

Pre-treatment optimisation studies for secondary effluent reclamation with reverse osmosis

Physical-chemical pre-treatment was used for the reverse osmosis unit for reclamation of secondary effluents. The pilot plant was equipped with a variety of tertiary treatment units to prevent fouling and biofouling of the cellulose-acetate reverse osmosis membranes used. The optimisation of pre-treatment involved application of various concentrations of lime to raise the pH to 10.3-12.1, and to stabilise the sludge generated, as well as different dosages of ferric chloride (15, 20, and 25 mg/L) for the coagulation and solid-liquid separation. Sodium hypochlorite (8 mg/L) and UV disinfection are used for microbiological control. The water quality obtained, under the optimum conditions (pH=10.5; FeCl(3): 25 mg/L; anionic flocculant: 0.5 mg/L; sodium hypochlorite: 8 mg/L) was high, showing an average conductivity of 66 microS/cm and low COD values 4 mg O(2)/L. The product water is suitable for injection into a groundwater aquifer to counteract seawater intrusion.