信息不完备条件下地震应急案例结构化方法研究

地震突发事件具有紧迫性、破坏性和信息不完备性,给人民群众生命财产安全造成了重大危害。案例推理是处置突发事件的有效方法。其中,案例表示是案例推理的基础,但是目前的案例表示方法并没有考虑突发事件的信息不完备性。这削弱了突发事件应急案例表示效果,并影响案例检索的准确性和案例适配的效果。本文在研究案例表示方法的基础上,结合案例推理的结构化和定量化需求,将证据理论的基本信任分配函数引入框架表示法中,提出了信息不完备条件下地震应急案例的框架表示法。接下来,本文提出了信息不完备条件下地震应急案例检索方法。最后,文章对提出的信息不完备条件下地震应急案例的结构化方法进行了应用验证。     

多学科通用虚拟实验教学标准体系的研究、设计和实践

虚拟实验在实验教学中得到了广泛应用,然而在数字化学习标准领域尚无虚拟实验相关的成熟技术标准,在很大程度上阻碍了虚拟实验教学的发展.本文在借鉴国内外成熟标准研制的经验和多领域建模思想的基础上设计了虚拟实验标准体系,并进行了实践应用验证.     

E-Navigation架构下船舶引航系统

为了提高引航调度效率,保证船舶操纵安全,应用E-Navigation系统架构研发了新型船舶引航系统.该系统采用多分辨率遥感影像、IHO-S57国际标准电子海图等地理空间数据,综合应用了AIS、公网3G及实时海流观测等技术.通过实例,证实该系统是可行的.     

塔里木盆地柯坪塔格组沉积格局与演化

以沉积大地构造背景分析为基础,指出塔里木板块南缘由拉张背景转变为挤压,大地构造运动造成的东西向坳隆相间的古地形控制了塔里木盆地内柯坪塔格组的沉积格局和沉积发育史．结合沉积相的精细解释,将柯坪塔格组划分为潮坪-陆棚-潮坪三个沉积演化阶段．     

基于COSMOSWorks的框架结构体的优化设计

介绍了COSMOSWorks的优化分析流程,并以食品压榨机框架为例进行了有限元分析。实例以框架结构体的质量为优化目标,并以结构应力、位移和第一阶固有频率为约束条件。优化后框架结构体质量减少了19.3%,大大降低了材料成本,且计算结果表明优化后的结构完全满足给定的约束条件。     

逻辑框架法在城市垃圾处理建设项目后评价中的应用

垃圾处理建设项目是城市基础设施建设项目的重要内容之一,对其进行后评价分析,总结项目建设的经验,对于提高政府解决城市垃圾处理问题的能力具有十分重要的意义.通过逻辑框架法在某垃圾处理场建设项目后评价中的应用和研究,对逻辑框架法的实际应用进行了有益探索.     

Fabrication of Hierarchically Structured MOF‐Co3O4 on Well‐aligned CuO Nanowire with an Enhanced Electrocatalytic Property

Engineering appropriate shape and size of three‐dimensional inorganic nanostructures materials is of one the main critical problems in pursuing high‐performance electrode materials. Herein, we fabricate a metal‐organic framework derived cobalt oxide (Co₃O₄) are grown on copper oxide nanowire (CuO NWs) supported on the surface of 3D copper foam substrate. The highly aligned CuO NWs were prepared by using electrochemical anodization of copper foam in ambient temperature and followed by MOF Co₃O₄ was grown via a simple in situ solution deposition then consequent calcination process. The obtained binder‐free 3D CuO NWs@Co₃O₄ nanostructures were further characterized by using X‐ray diffraction, X‐ray photoelectron spectroscopy, field‐emission scanning electron microscopy, and transmission electron microscopy. Furthermore, electrochemical sensing of glucose was studied by using Cyclic Voltammetry, and chronoamperometry techniques. Interestingly, 3D CuO NWs@Co₃O₄ electrode exhibits excellent performance for the oxidation of glucose compared with individual entities. The proposed sensor shows wide linear ranges from 0.5 μM to 0.1 mM with the sensitivity of 6082 μA/μM and the lowest detection limit (LOD) of 0.23 μM was observed with the signal to noise ratio, (S/N) of 3. The superior catalytic oxidation of glucose mainly is endorsed by the excellent electrical conductivity and synergistic effect of the Co₃O₄ and CuO NWs.     

Graphene Paper with Sharp‐edged Nanorods of Fe−CuMOF as an Excellent Electrode for the Simultaneous Detection of Catechol and Resorcinol

A flexible composite paper Fe?Cu‐based metal‐organic framework (MOF)/reduced graphene oxide (rGO) (Fe?CuMOF/rGO) electrode was prepared by using a simple electrochemical method for the simultaneous detection of catechol (CC) and resorcinol (RC). Free‐standing, flexible and double‐sided Fe?CuMOF/rGO composite paper was obtained by applying the electrochemical deposition process on the rGO paper electrode in the solution containing Fe?CuMOF composite. The morphological analysis of Fe?CuMOF/rGO composite paper showed that sea urchin‐like structures formed on the rGO electrode surface consist of numerous sharp‐edged nanorods of Fe?CuMOF. Flexible Fe?CuMOF/rGO paper electrode exhibited high sensitivity, wide linear range and low detection limit for the simultaneous determination of CC and RC. The linear ranges of concentration for CC and RC were 0.1–800 and 0.1–720 μM, respectively, and the corresponding limits of detection (S/N=3) were 0.016 and 0.020 μM. The outstanding performance of this flexible electrode could be attributed to the sharp‐edged urchin‐like Fe?CuMOF structures which provide an increment of the surface area and the electrochemical activity of the composite paper electrode. Stability tests showed that Fe?CuMOF/rGO composite paper electrode has excellent flexibility, high durability, and good reproducibility. Furthermore, this electrode exhibited high sensitivity and selectivity for the determination of CC and RC in real sample analysis.     

Mixed matrix membrane comprising polyimide with crystalline porous imide‐linked covalent organic framework for N2/O2 separation

An imide‐linked covalent organic framework (COF) was successfully synthesized by directly heating a mixture of melamine and biphenyltetracarboxylic dianhydride (BPDA) in a tubular oven at 335°C. The crystalline and nanostructure of this COF was characterized by X‐ray diffraction (XRD) and Brunauer‐Emmett‐Teller (BET). A mixed matrix membrane (MMM) was prepared by blending the COF into the commercial P84 polyimide in solution. It is found that the COF particles not only act as gas channels for N₂ and O₂ permeation but also provided an inverse permselective property with higher permeability of N₂. The effect of COF nanostructure and its loading amount on N₂ and O₂ permeability and selectivity has been investigated.     

Nanoscaled porphyrinic metal–organic framework for photodynamic/photothermal therapy of tumor

Nanoagents achieving photodynamic therapy (PDT) and photothermal therapy (PTT) combination treatment with improved therapeutic effect are highly desirable. However, the incorporation of both PDT and PTT into a single nanoagent often requires multistep fabrication process. Herein, we report that photoactive porphyrin ligands have been successfully introduced into Zn‐TCPP structure to construct the nanoagents that possesses photodynamic performance and photothermal performance simultaneously. Such a nanoagent enables the generation of single oxygen and heat under laser irradiation. Additionally, it exhibits satisfactory biocompatibility and high light toxicity against cancer cells. The current work provides a feasible approach to introduce both PDT and PTT into a single nanoplatform.