Biological image processing via Chaotic Differential Search and lateral inhibition

In this paper, we propose a hybrid biological image processing approach, which is based on Chaotic Differential Search (CDS) algorithm and lateral inhibition (LI) mechanism. We named this hybrid biological image processing approach as LI-CDS. Differential Search (DS) algorithm is a new bio-inspired optimization algorithm mimicking the migration behavior of an organism, and has been successfully used for solution of coordinate system transformation. The property of chaotic variable is integrated into DS to improve its search strategy so that it can escape from the local optimum. Furthermore, lateral inhibition mechanism, which is verified to have good effects on image edge extraction and image enhancement, is employed to pre-process images involved. In this hybrid biological image processing mechanism, our proposed LI-CDS method incorporates both advantages of chaos theory and lateral inhibition mechanism. Series of comparative experimental results by using LI-CDS, DS, CDS and Particle Swarm Optimization (PSO) demonstrate that the proposed LI-CDS performs better than the other three methods.     

基于虚拟现实技术的核电站三维视景仿真系统研究

以大亚湾核电站为原型,运用虚拟现实技术建立了基于3DS Max的虚拟核电站三维模型。利用3DS Max软件创建了大亚湾核电站的三维模型,借助OpenGL图形库编程生成核电站三维仿真系统,以期给核电站操作人员的培训工作带来帮助。     

Comparison of calculated and experimental FTIR spectra of specifically labeled ubiquinones

Density functional theory has been used to calculate harmonic vibrational frequencies and intensities of unlabeled and labeled ubiquinone-1 in both the gas phase and in solution (CCl₄). Calculations were undertaken using the B3LYP functional and the 6-31G+(d) basis set. Calculations using larger basis sets did not significantly alter the calculated spectra. Calculations for ubiquinone-2, -3, -6 or -8 gave similar results.Calculations show that eight ubiquinone-1 conformations, which differ only in the orientation of their methoxy groups, are likely to coexist in solution at room temperature. The calculated infrared spectra for these eight conformations vary considerably. However, by averaging the Boltzmann weighted spectra for the eight conformers, composite spectra are calculated that successfully model both the frequency and intensity information inherent in the experimental FTIR spectra obtained for both unlabeled and labeled ubiquinones in solution.The calculated spectra presented here provide a robust foundation from which to consider and assess future modeling of the vibrational properties of ubiquinones embedded in protein complexes.     

基于DS1302和LM016L的实时时钟设计与仿真

本文给出了一个单片机控制的液晶显示实时时钟设计实例,系统地介绍了实时时钟芯片DS1302的主要工作原理和编程思路。对字符液晶显示器LM016L的显示原理和技巧作了阐述。系统在Proteus平台上进行了软、硬件交互仿真,实现了设计目的。     

基于Zigbee的分布式温度采集系统的设计

无线数据采集是Zigbee的重要应用领域,但对节点的地址管理和重组,以及电源管理一直比较敏感.设计了一种基于芯片CC2430和Z-Stack协议栈的多点温度采集系统,可对节点进行动态管理,新设计的电源管理方案延长了电池的使用寿命.本方案的特点在于组网方便,重组能力强,节点电池寿命长.     

变配电站温湿度监控系统的设计

随着国网公司建设智能电网的不断推进,大量无人值守的智能化高的变配电站需要各种具备通信功能的各种监控系统,当前对变配电站的温湿度监控还是较为空白,可能引起设备的过热和锈蚀。本文应用运行于40MHz晶振具有8051内核的μPSD3234A单片机利用IO口通信和AD转换读取DS18B20温度测量器件和HM1500湿度测量器件,并把测量结果通过单片机的RS232串口通信将数据送到计算机主站,并通过IO口经过达林顿管输出24V直流电压,直接或者再经过DC/AC继电器控制排风扇、除湿机、空调结点、告警信号等实现变配电站温湿度的自动测控。该系统的应用,有助于改善变配电站的运行环境,促进电网设备的稳定可靠运行。     

土壤Cd含量实验室与野外DS光谱联合反演

土壤重金属高光谱遥感建模理论上能够大大降低传统化学分析测定所需成本,正逐步发展为有效探查土壤污染空间分布与开展污染土壤综合防治的关键技术。然而土壤重金属高光谱遥感调查技术目前多局限于稳定可控条件下的实验室光谱模型,野外诸多因素（光照、湿度、土壤粗糙度等）影响下野外原位光谱模型的有效性已成为困扰该项技术大范围推广亟待突破的关键科学问题。以湖南衡阳市某矿区为例,分别利用ASD地物光谱仪和等离子发射光谱法测定46个土壤样品350~2 500 nm的实验室光谱和Cd含量,并在土壤取样时同步测量样品野外原位光谱。在运用DS（direct standardization）转换算法处理野外光谱的基础上,融合实验室光谱先验知识,基于主成分逐步回归建模方法开展了土壤Cd含量实验室与野外原位DS光谱联合反演实验,交叉验证了模型的稳定性。同时为深入探究实验室与野外原位DS光谱联合反演模型的有效性,将其与基于实验室光谱、野外原位光谱、野外原位DS光谱、实验室与野外原位光谱联合建立的主成分逐步回归模型开展了对比分析。结果表明：野外原位光谱反演模型精度（R2=0.56）明显低于实验室光谱反演模型（R2=0.64）,野外原位DS光谱反演模型与之相比精度有所提升（R2=0.66）;在野外原位光谱DS转换校正基础上,联合实验室光谱先验知识的土壤Cd含量反演模型精度最高,R2可达0.72。与此同时,实验室与野外原位DS光谱联合反演模型揭示482,565,979和2 206 nm波段对研究区土壤Cd含量有较好指示性,此结果与实验室光谱反演模型所识别的特征波段一致,两者物理意义相同。研究结果证实了实验室光谱先验知识以及DS转换算法能够提升野外原位光谱模型的可靠性,可为发展土壤Cd含量野外原位高光谱遥感探测提供重要的提供理论与方法支撑。     

电子效果图后期光效处理实现方法与比较

本文介绍利用3DS MAX和PHOTOSHOP进行几种电子效果图后期光效处理的方法，并比较光效处理的方法与结果。     

CGC／IR／MS方法对玫瑰精油化学成分的分析

用气相色谱－红外－质谱三联仪研究永登政瑰精油的化学成分。共分离鉴定了９３个化合物，其中２８个分为首次鉴定报道。采用标准谱图计算机检索。３６个化合物ＭＳ谱得到ＩＲ谱验证，１５个化合物用标准样对照。     

基于OpenGL双缓存动画仿真软件的开发

介绍了在微机上应用图形工业标准OpenGL双缓存显示多媒体计算机动画的原理和方法，提出了利用3DMAX三维建模软件和VIEW3DS转换软件实现复杂物体的建模的方法，详细介绍了利用OpenGL双缓存机制实现实时交互动画的方法，并开发了动画仿真软件。