集成DSP的视频处理卡在机器视觉中的应用

针对在机器视觉的应用中普遍存在的待处理的图像数据量多且算法复杂，单机CPU无法实时完成图像处理任务，需要多台计算机组成局域网平行处理，成本高昂且可靠性低的问题。给出了集成DSP芯片的高速图像采集卡以替代主机CPU进行图像算法处理的解决方案，并指出在单台PC机上插入多块高速图像采集卡，主机的CPU只负责统一协调作用就可以较好的处理此类问题。由于该高速卡设计灵活，只需稍作改动即可应用于嵌入式设备。该高速图像处理卡在机器视觉领域内有着重要和广泛的应用前景。     

Zr-intercalated molybdenum disulfide: preparation, characterization and catalytic activity in nitrobenzene hydrogenation

Layered composites, Zr-intercalated MoS₂, have been prepared utilizing the exfoliation and restacking properties of Li _x MoS₂ under mild conditions and characterized by X-ray powder diffraction, differential scanning calorimetry and BET surface measurements. It showed the formation of two distinct products depending on the employed Zr:MoS₂ reaction stoichiometry. The interlayer expansions of about 4.4 Å and 9.2 Å suggested mono- or bi-layer arrangements of the hydroxyl–Zr oligocations into the interlayer galleries between the MoS₂ host layers. The composites exhibit good catalytic activities in the hydrogenation of nitrobenzene into aniline, due to their intercalated structures and great specific surface areas.     

Zr（Fe,Cr）2金属间化合物的氧化

用非自耗电弧炉熔炼了比值(重量比值)不同的Zr(Fe,Cr)_2,并在773K和973K的空气中氧化。经X射线衍射和电子衍射分析表明:当Fe/Cr≤4.5时,Zr(Fe,Cr)_2,是MgZn_2型(六方)的Laves相,它的晶格常数随Fe/Cr比增加而收缩。Zr(Fe,Cr)_2氧化后生成的稳定氧化物是单斜ZrO_2和六方(Fe,Cr)_2O_3。在形成稳定氧化物之前,还会出现亚稳定的立方ZrO_2。根据本实验结果讨论了Zr-4合金中Zr(Fe,Cr)_2第二相对腐蚀性能的影响。     

关于建立军械包装战技指标标准的探讨

在分析国内外包装及其标准现状的基础上提出了军械包装战术技术指标标准的基本内容和体系构成,并对标准的建立步骤和方法提出了基本设想。     

消防泵技术的发展

随着全球经济的不断提高和消防系统的发展,为了满足新的需要,跟上新变化带来的新需求,消防泵技术也在不断发展。一些标准的修改也迫使消防泵的功能和技术要不断发展。1仓库用消防泵EN12845即将成为欧洲自动喷水灭火系统安装的通用标准。当使用架内喷水灭火系统时,会改变这个标准关于仓库喷水灭火系统中流量的规定,消防泵的功效也随之变化。在英国,新的LPC标准(BS5306第2部分)要求,在一个垂直平面的所有高度上的喷头,必须同步进行水压计算。因此,在一个30m高的仓库,平均每层高2.8m,所有10层的喷头,都要同步进行水压计算。根据仓库的宽度和…     

长绒棉涤纶Tencel亚麻混纺纱线的生产

长绒棉、涤纶、Tencel与亚麻混纺针织纱线,其产品不仅具有亚麻产品的特点,而且使多种纤维的优势互补,改善了纱线的内在和外观质量,提高了产品的技术含量.长绒棉、涤纶、Tencel与亚麻混纺针织纱线,长绒棉、Tencel分别制条,亚麻与涤纶混和制条,在并条机上混和纺纱.     

Electrodeposited α-PbO2 and β-PbO2 in sulfuric acid: Recharge,cycling and morphology

Experiments have shown that a structural transformation, β→α, was likely to occur during deep cycling of electrodeposited β-PbO₂ in 8N H₂SO₄, and that the appearance of α-PbO₂, in formerly pure β-PbO₂, was responsible for the enhancement of the capacity. The presence of α-PbO₂ also facilitated the growth process of β-PbO₂ during the charging.     

设备基础大体积混凝土施工及裂纹控制

在大庆200MW火电厂锅炉等设备基础的大体积混凝土施工过程中，通过严格执行模板设置、混凝土的搅拌、输送、振捣、养护等工艺规范，采取定时定位监测凝结水化热的温度等工艺措施，有效地控制了大体积混凝土浇筑后可能产生的裂纹。     

Heuristic algorithms for scheduling iterative task computations ondistributed memory machines

Many partitioned scientific programs can be modeled as iterative executions of computational tasks and represented by iterative task graphs (ITGs). An ITG may or may not have dependence cycles. In this paper, we consider the symbolic scheduling of ITGs on distributed memory architectures with nonzero communication overhead and propose heuristic algorithms for scheduling both cyclic and acyclic ITGs without searching an entire iteration space. Our approach incorporates techniques of software pipelining, graph unfolding, directed acyclic graph (DAG) scheduling, and load balancing. We analyze the asymptotic optimality of the algorithms to show that the derived schedules are competitive to optimal solutions. We also study the sensitivity of scheduling performance on inaccurate weights. Finally, we present experimental results to demonstrate the effectiveness of the optimization techniques     

TiO_2光催化氧化有机物的研究现状及展望

论述了半导体光催化反应机理 ,从晶相组成、晶粒尺寸、热处理温度及气氛、表面羟基、表面结构等方面介绍了对催化剂活性的影响 ,探讨了反应物、氧气、p H值、温度、氧化剂、阴离子、光及光强等在光催化氧化降解过程中的作用 ,并对今后的研究及应用做出展望