Near-infrared photodetection with a diruthenium complex having redox-switchable wavelength response

We report on the electrochromic behavior of a dinuclear ruthenium complex, which provides high environmental stability together with an intense absorption maximum at 1237 nm in solution in its +3 oxidation state. To verify its optoelectronic properties, we used this complex as the photoactive material in a planar photodetector prototype for near-infrared light pulses, succeeding in the detection of a train of light pulses at a wavelength of 1280 nm.     

Local collision avoidance of multiple robots using avoidability measure and relative distance

This paper presents a new method driving multiple robots to their goal position without collision. To consider the movement of the robots in a work area, we adopt the concept of avoidability measure. The avoidability measure figures the degree of how easily a robot can avoid other robots considering the velocity of the robots. To implement the concept to avoid collision among multiple robots, relative distance between the robots is proposed. The relative distance is a virtual distance between robots indicating the threat of collision between the robots. Based on the relative distance, the method calculates repulsive force against a robot from the other robots. Also, attractive force toward the goal position is calculated in terms of the relative distance. These repulsive force and attractive force are added to form the driving force for robot motion. The proposed method is simulated for several cases. The results show that the proposed method steers robots to open space anticipating the approach of other robots. In contrast, since the usual potential field method initiates avoidance motion later than the proposed method, it sometimes fails preventing collision or causes hasty motion to avoid other robots. The proposed method works as a local collision-free motion coordination method in conjunction with higher level of task planning and path planning method for multiple robots to do a collaborative job.     

电力市场的均衡与失灵问题探讨

市场均衡与失灵是两个相反的概念,由于电力网络的特殊性,电力市场一般来说不能在供求曲线的交点处运行,这是电力市场失灵的具体表现,也就是说,在通常情况下电力市场是不能达到均衡状态的.根据经济学原理,对于市场失灵有两种解决措施,即通过政府税收的协调措施与参与者之间的协调措施,通过对这两种措施的比较,提出了一种通过参与者之间的互相协调使失灵的电力市场得以重返均衡状态.     

用于无线网络中违规行为检测的退避算法

无线媒体访问控制协议通常使用分布式竞争机制来共享无线信道。通过对IEEE 802.11协议的分布式协调功能机制进行修改,提出一种改进的退避算法,可实现对网络中的违规行为节点的有效检测,并通过惩罚机制加以纠正。仿真结果表明,该方法能够更有效地检测出无线网络中的违规行为,提高整个网络的吞吐量。     

仿真环境下的机器人足球决策系统

机器人足球系统是一类典型的多移动机器人合作的对抗系统．具有实时性要求高、环境高度动态、存在不可预测状态等特点．机器人足球系统是人工智能和智能控制领域的探究热点之一。主要研究在仿真环境下基于三层控制决策模型的机器人足球决策系统．为单个或多个足球机器人分配任务和执行任务。使机器人决策系统具有较好的应激性和协调性,实现有效攻防．探讨多智能机器人实时合作与对抗问题、以求验证和发展人工智能的有关理论和技术。     

Synthesis and catalytic properties of a new window type hybrid porous zirconium phosphonate

An organic–inorganic hybrid zirconium phosphonate (noted as ZrNCP) with window type porous structure was synthesized by using β–alanine–N,N-dimethylidenephosphonic acid and zirconium dichloride oxide octahydrate. The sample possesses regular flake morphology, and these flakes have porous framework structure, which were characterized by SEM, HRTEM, N₂ sorption, XRD, TGA–DSC, elemental analysis, XPS, and FT-IR spectroscopy techniques. The as-prepared ZrNCP can be used as catalyst to oxidation of formaldehyde after Fe³⁺ was intercalated and coordinated with nitrogen and carbonyl groups inside the porous walls of ZrNCP. 90.1% of oxidized efficiency was obtained when the catalyst was added into formaldehyde solution (40% water solution) at 80 °C.     

基于随机Petri网的服务组合可协调性研究

提出了一种基于随机Petri的服务组合间可协调性研究方法。首先,给出了服务以及服务系统的定义;然后,在服务以及服务组合可协调性定义的基础上给出了可协调行分析算法;最后,以一个电子物流系统为例,在随机Petri网建模的基础下给出了服务组合间的可协调性研究方法。     

基于感受量的接地距离保护整定方法探讨

针对接地距离保护整定计算中基于助增系数的整定方法的不足，探讨了基于感受量的整定方法，给出了普遍适用的整定计算公式。该方法能够实现接地距离保护与配合保护的整定，全面提高接地距离保护的灵敏度，并且易于计算机实现。该方法已经运用于工程实际中，工程算例验证了本方法的正确性和有效性。     

产业园区高清卡口智能协同监控系统设计与实施

高清卡口智能协同监控系统采用数字高清摄像机采集进出入园区车辆的图像信息,通过公安专用光纤网络协同传输至公安局指挥中心的数字分析系统,进行信息协同处理和信息协同发布与更新,及时发现布控车辆及犯罪嫌疑人员,实现快速处置。