Autonomous pedestrians

We address the challenging problem of emulating the rich complexity of real pedestrians in urban environments. Our artificial life approach integrates motor, perceptual, behavioral, and cognitive components within a comprehensive model of pedestrians as individuals. Featuring innovations in these components, as well as in their combination, our model yields results of unprecedented fidelity and complexity for fully autonomous multihuman simulation in a large urban environment. We represent the environment using hierarchical data structures, which efficiently support the perceptual queries that influence the behavioral responses of the autonomous pedestrians and sustain their ability to plan their actions on local and global scales.     

网络实验室体系结构与解决方案研究

介绍了网络实验室的基本要求和管理方式,给出了某高校的体系结构图,同时对其进行了简单的功能描述和线路分析,详细阐述了实验室的解决方案,总结了系统的特点和优点.     

On Broadband Adaptive Beamforming in the Presence of Correlated Interferences

A novel approach of unitarily interpolated array MVDR （UIA-MVDR） is proposed, aiming at avoiding the signal cancellation caused by broadband signal-correlated interferences. UIA-MVDR belongs to the classic approaches of spectral averaging. However, it is distinguished from the conventional interpolated array MVDR （IA-MVDR） by two points： 1） It imposes a unitary constraint on the transform matrices. 2） It only optimizes the worst-case performance of array manifold approximation. As a result, the restriction on the order of Bessel function expansion is released, so that very accurate approximation can be achieved even in the case of small or middle arrays. Compared with many related approaches, UIA-MVDR destroys the correlation more completely and then achieves better performance. Its excellent performance in both correlated and uncorrelated broadband interferences suppression is confirmed via a n umber of numerical examples.     

Edge-preserving image decomposition via joint weighted least squares

Computational Visual Media - Recent years have witnessed the emergence of image decomposition techniques which effectively separate an image into a piecewise smooth base layer and several residual...     

Development of multiple robotic fish cooperation platform

This article presents the development of a multiple robotic fish cooperation platform, which is established by employing a group of radio-controlled, multi-link fish-like robots. This work is inspired by the observation from nature that the capability of one single fish is limited, as in order to survive the atrocious circumstances in the sea, fish often swim in schools. The analogical situations occur in the robotic fish case. In engineering applications, most missions are so complex that they must be accomplished by effective cooperation of multiple fish robots. The platform presented in this article, as a novel test bed for multiple robotic fish cooperation, can be applied to different types of complex tasks. More importantly, it provides a good platform to test and verify all kinds of algorithms and strategies for cooperation of multiple underwater mobile robots. We use two cooperative tasks as examples to heuristically demonstrate the performance of this platform.     

膜分离富氧在家用医疗保健中的应用分析

介绍了膜分离的原理及各参数对分离过程的影响,并给出在理想情况下二元混合物所能得到的易透过组分在渗透物中的浓度计算公式。介绍了膜分离在家用医疗保健中的应用——小型家用膜分离富氧机,并对其进行了分析。     

SiC(Cu)/Fe复合材料制备工艺研究

采用非均相沉淀法制得Cu包裹SiC复合粉体,利用粉末冶金和常压烧结制备SiC(Cu)/Fe复合材料.利用Zeta电位仪、XRD,EDS以及SEM等手段对包裹粉体和烧结样品进行了分析.结果表明,采用非均相沉淀法可以得到Cu/SiC复合粉体.包裹后的粉体与原始SiC粉体的表面电位不同,达到了对SiC颗粒表面改性的目的.Cu作为过渡层改善了SiC/Fe的界面相容性,在1050℃烧结的样品只有微量的FeSi或Fe2Si生成,界面反应得到有效控制,获得化学结合的界面,温度过低不能烧结致密,温度过高出现大量缺陷.     

8MeV X线照射人外周血诱发的染色体畸变率及其相对生物效应

本文应用国产 DZY-10医用电子直线加速器产生的8MeVX 线离体照射人外周血,经54小时培养后,观察淋巴细胞的染色体畸变,双着丝点体畸变率与剂量之间关系适宜配成 Y=(1.97±1.95)×10~(-4)D+(2.74±0.71)×10~(-6)D~2。以180kVX 线诱发的双着丝点体的畸变率为标准,得到8MeVX 线、~(60)Coγ线和14MeV 中子的相对生物效应系数分别为0.59、0.63和2.03。     

ICP-AES Determination of Germanium in GdSiGe Series Alloys as Magnetic Refrigeration Material

The ICP-AES method for the determination of Ge in GdSiGe series alloys was studied.As the three main elements in the alloys,Gd,Si,and Ge differ greatly from each other in chemical properties,it was difficult to pretreat the sample.Two decomposition methods were compared,and a mixture of HNO3＋HF was used to decompose the sample and the effect of the HF amount on the sample decomposition was examined.The adsorption effect of GdF3 on Ge was discussed.Three GdSiGe series alloy samples were analyzed,and the RSDs of this method were in the range of 0.85%～2.66%.