基于服务器的数据回放系统软件架构设计

提出一种基于高性能刀片服务器的数据回放系统的软件设计方法.将以往在复杂的数据回放机器运载的软件程序,改编移植到刀片服务器的Windows操作系统中,以纯IP组网通信代替数据回放机器间的串口通信及共享内存,以刀片服务器代替数据回放机器.该方法实现了以记录数据为数据源的显示回放功能,极大地降低了回放设备成本并提高了回放设备...     

Comparison of ultrasonication and microfluidization for high throughput and large-scale processing of SWCNT dispersions

Two SWCNT dispersion processing techniques - microfluidization and ultrasonication- were examined using an ultracentrifuge method and simultaneous Raman scattering and photoluminescence spectroscopy. It was demonstrated that the extremely high energy dissipation rate in microfluidization facilitates the high throughput dispersion of SWCNT bundles. However, the efficiency of SWCNT bundles being separated into individual tubes in this process is much lower compared to ultrasonication, in which the energy dissipation rate is very low. This suggests that the types of flow field rather than the energy dissipation rate play a critical role in the separation of bundles into single SWCNTs.     

Fundamentals of electrochemistry (Ⅱ)--Thermodynamic equilibrium and Nernst equation

能斯特方程描述电极,原电池的可逆电势与标准电极电势及反应物活度的定量关系,是热力学平衡在电化学反应过程中的具体表现,是构成现代电化学工程的科学基础之一.能斯特方程对现代电化学工业技术领域的推动作用,主要体现在化学电源,金属防腐和电化学分析方法等领域.通过回顾能斯特方程提出和发展的科学背景,了解其解决问题的思路,对于推动现代电化学工程研究具有重要意义.     

Mass conservation and Faraday's Law--One of the fundamental theories of electrochemistry(Ⅰ)

法拉第定律描述电化学反应过程电子转移与物质转化之间的定量关系,是电荷守恒定律和物质守恒法则在电化学反应过程中的具体表现,构成现代电化学工程的科学基础之一.法拉第定律对早期的电化学理论发展起到重要推动作用,一直影响到现代电化学工业技术领域,包括电沉积行业,电池行业以及电化学分析技术等.通过回顾法拉第定律提出和发展的科学背景,分析其解决问题的思路,对于探究和解决现代电化学工程领域的课题有重要启示作用,对于理解电化学过程物质守恒,电荷守恒的"电中性"原则具有重要理论价值和科研指导意义.     

图像增强对显著性目标检测的影响研究

目的 雾霾、雨雪天气和水下等非理想环境因素会引起图像退化,导致出现低质图像,从而影响人类主观视觉感受及机器视觉应用任务的性能,因此,低质图像被利用之前进行图像增强成为惯常的预处理过程。然而,图像增强能否提高图像机器视觉应用任务的性能及影响程度等问题鲜有系统性研究。针对上述问题,本文以图像显著性目标检测这一机器视觉应用为例,研究图像增强对显著性目标检测性能的影响。方法 首先利用包括5种传统方法、6种深度学习方法等共11种典型图像增强方法对图像进行增强处理,然后利用8种典型的显著性目标检测方法对增强前后的图像分别进行显著性目标检测实验,并对比分析其结果。结果 实验表明,图像增强对低质图像显著性目标检测方法性能的促进作用不明显,某些增强方法甚至表现出负面影响,也存在同一增强方法对不同的显著性目标检测方法作用不同的现象。结论 图像增强对于显著性目标检测及其他的机器视觉应用的实际效果值得进一步研究,如何根据图像机器视觉应用的需求来选择和设计有效的增强方法需进一步探讨。     

An average optimal control approach to the set stabilization problem for boolean control networks

This paper addresses the set stabilization problem for deterministic Boolean control networks (BCNs). An optimal control approach is investigated to solve the problems by using the semi‐tensor product of matrices, where a policy iteration algorithm for the set stabilization problem is deduced. Finally, the intervention problem of a cAMP receptor protein is addressed in the framework of the set stabilization problem. The problem is solved to validate the effectiveness of the proposed policy iteration approach for a practical application.     

智能电能表批次故障预警和寿命预估方法

随着智能电网的建设,智能电能表投运数量出现大幅增长。基于现场可靠性数据,使用极大似然法对智能电能表的分布参数进行估计,提出了智能电能表批次故障预警和寿命预估方法。实际验证结果表明,所提方法可以预警存在故障的智能电能表批次,预估可靠寿命,为智能电能表轮换机制的优化提供理论和数据支撑。     

Facile Preparation of Multifunctional WS2/WOx Nanodots for Chelator‐Free 89Zr‐Labeling and In Vivo PET Imaging

While position emission tomography (PET) is an important molecular imaging technique for both preclinical research and clinical disease diagnosis/prognosis, chelator‐free radiolabeling has emerged as a promising alternative approach to label biomolecules or nanoprobes in a facile way. Herein, starting from bottom‐up synthesized WS₂ nanoflakes, this study fabricates a unique type of WS₂/WO_x nanodots, which can function as inherent hard oxygen donor for stable radiolabeling with Zirconium‐89 isotope (⁸⁹Zr). Upon simply mixing, ⁸⁹Zr can be anchored on the surface of polyethylene glycol (PEG) modified WS₂/WO_x (WS₂/WO_x‐PEG) nanodots via a chelator‐free method with surprisingly high labeling yield and great stability. A higher degree of oxidation in the WS₂/WO_x‐PEG sample (WS₂/WO_x (0.4)) produces more electron pairs, which would be beneficial for chelator‐free labeling of ⁸⁹Zr with higher yields, suggesting the importance of surface chemistry and particle composition to the efficiency of chelator‐free radiolabeling. Such ⁸⁹Zr‐WS₂/WO_x (0.4)‐PEG nanodots are found to be an excellent PET contrast agent for in vivo imaging of tumors upon intravenous administration, or mapping of draining lymph nodes after local injection.     

Solitary extra-osseous ovarian plasmacytoma. Apropos of an unusual case in a 12 year old child

A rare case of extramedullary or solitary ovarian plasmocytoma in a 12 years old patient is reported. Surgery consisted of left adnexectomy associated with omentectomy. Chemotherapy with abdomino-pelvic iradiation were effectuated afterwards. Review of literature and therapeutic indications are discussed.