纸张性能对不同阶调处印刷品密度的影响

实验结合印刷品质量检测方法和SPSS软件,对在IGT印刷适性仪上的印刷结果进行分析,得到纸张性能与不同阶调处印刷品密度之间的关系.据此数据能够预知密度再现质量情况,可通过比较不同纸张的性能数据判断哪种纸张适合于目标印刷品.     

纸张抗透印性与印品阶调层次关系的研究

目的 提出一种控制和预测印品透印质量的评价方法,为印品图文设计及选纸方面提供理论依据,达到经济化、高质量生产的目的。方法 选取5种不同的非涂布纸样,对其紧度、平滑度、油墨吸收性和不透明度指标进行检测,通过建立PTR模型来评价纸样的抗透印性。在这5种纸样印上CMYK阶调色块,即10%~100%（实地）,利用色差法ΔELab来表征每一阶调的透印程度PTq,以ΔELab=3.5作为透印阈值,来建立纸样抗透印性与各阶调之间的关系。结果 从1#纸样到5#纸样的抗透印值PTR依次减小,CMYK在各阶调的透印值也基本呈现相同规律,PTR模型成立;依据透印阈值和每一纸样的线性公式得到相应的阶调值,计算各色的阶调均值,从1#到5#分别为134.15%（计算值）,88.9%,51.95%,42.7%,36.15%,以此建立PTR与阶调值的关系曲线。结论 抗透印PTR值在70.5%以下的纸张,适印40%以下阶调的图像;PTR值从71.0%开始不断增大,纸张的适印阶调范围也随之扩大;当PTR值达到73.8%左右时,即使实地色块也不会干扰到背面的图文。     

Identification of Tone Duration, Line Length, and Letter Position: An Experimental Approach to Timing and Working Memory Deficits in Schizophrenia.

Patients with schizophrenia display numerous cognitive deficits, including problems in working memory, time estimation, and absolute identification of stimuli. Research in these fields has traditionally been conducted independently. We examined these cognitive processes using tasks that are structurally similar and that yield rich error data. Relative to healthy control participants (n = 20), patients with schizophrenia (n = 20) were impaired on a duration identification task and a probed-recall memory task but not on a line-length identification task. These findings do not support the notion of a global impairment in absolute identification in schizophrenia. However, the authors suggest that some aspect of temporal information processing is indeed disturbed in schizophrenia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

汉语语音识别中语言模型的并行优化

研究了汉语语音识别中语言模型的并行优化问题,在已有汉语语音识别有调拼音模型和多核体系结构的基础上,对其算法进行了并行优化,并优化了查询机制和前后向算法。试验表明,该方法取得了很好的效果,识别速度有了很大改进。     

HDR视频算法优化及硬件实现

高动态范围(high dynamic range,HDR)视频算法计算复杂度高,硬件实现需要大量逻辑和存储资源,且现有的算法难以满足高分辨率下的实时性要求.针对上述问题,提出一种优化的HDR视频流水线算法,同时利用FPGA的并行可重构特性,完成该算法的硬件实现.算法首先将相机响应函数内置于FPGA的查找表(look-up table, LUT)中,对3帧低动态范围(low dynamic range, LDR)图像进行合并,转换后的数据通过多路并行流水缓存在FPGA的BRAM中; 然后使用快速的全局色调映射算法将结果实时显示输出.最终算法在Xilinx Kintex-7开发板上实验通过,在120 MHz系统时钟频率下,对于1 920×1 080分辨率的视频流,处理速度达到65 f/s,满足了实时性要求.     

一种基于电话网络的家居智能报警系统

介绍了基于网络的家居智能监控系统的软、硬件设计方法。该系统可实现家居的火灾报警、非法入侵检测和报警等,还预留了其它报警接口。报警信号通过有线网络到小区监控中心,并通过电话网络向主人报警,也预留110报警功能。系统由单片机作为主控制器。给出系统的基本原理、组成框图和软件流程．详细描述了电话网络的接入方法和语音功能的实现。设计了系统的硬件电路,并实现了相应的软件编程。     

A spectroscopic method for quick evaluation of tint strength and tint tone of titania (rutile) pigment and factors affecting them

Titanium dioxide (TiO₂) manufacturing industries measure optical properties such as brightness, colour, tint strength, tint tone, gloss, scatter coefficient, and others to ensure the quality of the product. Product characterization and process control generally focus on the optical properties, which determine its quality. In this work, titania rutile pigment with varying tint strength and tint tone is analyzed and a correlation is established between particle size and the optical properties such as tint strength and tint tone. It is observed that optical properties of titania pigment depends on the particle size as well as particle size distribution. A relatively faster evaluation of tint strength and tint tone can be made using the reflectance and particle size measurements. Analytical samples were prepared by ultrasonic dispersion of pigment in water containing calgon as dispersing agent. To verify the accuracy of the method, pigment tint strength and tint tone obtained from this study are compared with those resulting from traditional analysis. The results showed that the new method is viable.     

个性化回铃音业务的技术发展和建设探讨

个性化回铃音业务作为一种新型的语音增值业务,由于其创新的业务视角,目前已经得到了广泛的开展和应用.本文对目前各通信网络中的个性化回铃音业务解决方案进行了对比和分析,对于其发展进行了探讨和展望.     

多载波扩频系统中单音干扰抵消的新方法

利用离散傅立叶变换(DFT)计算的结果对干扰信号进行准确估计与重构,提出了一种有效去除多载波扩频系统中存在的单音干扰DFT变换域处理新方法.与基于变换域处理的"门限剔除"法相比,该方法可以更有效地去除干扰,同时保证有用信号的能量损失很小.研究与仿真结果表明,所提出的新方法具有较大的性能优势,尤其在极大功率干扰的场合中,采用"门限剔除"法失效的情况下,仍具有优异的性能.     

自适应偏振模色散补偿中控制信号的研究

文章比较了两种在自适应偏振模色散（PMD）补偿设备中控制信号的控制方法,即前馈（Feed Forward）检测控制和反馈（Feedback）检测控制;分析比较了各种可用作控制的信号,包括偏振度（DOP）、信号频率分量、眼开代价、两正交主极态（PSP）上光信号分量间的相位差和副载波信号等。