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In this paper, the background of fake information diffusion in public crisis management was firstly analyzed, and then three basic propositions and three hypothesis of simulation were concluded. Then, the management countermeasures of fake information diffusion in public crisis were classified as fifteen types according to the types of strategy and executive ability, and then fifteen corresponding simulation schemes were put forward. Meanwhile, a management simulation model of fake information diffusion in public crisis was constructed and used to phenomenologically simulate the scenarios and validity of five among these fifteen management countermeasures. At last, these simulation results were contrasted and analyzed, and five novel but meaningful conclusions were drawn.
首先对公共危机伪信息特殊性及其管理复杂性进行分析,得出论文研究的三大基本命题与三大研究假设;在此基础上,一方面分析了混沌理论方法在公共危机伪信息管理仿真中的适用性,并根据混沌情景预测方法构建了公共危机伪信息扩散的管理仿真模型,另一方面依据所提出的基本命题与研究假设,从管理策略与管理执行力度两方面对公共危机伪信息管理模式进行分类,形成了十五个仿真方案;最后利用所构建的仿真模型其中的五个仿真方案的管理绩效与扩散情景进行唯象仿真,并对仿真结果进行横向对比分析,得出五大结论。
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The present paper deals in detail with the origin, dynamics, geochemistry and physicochemistry of the ore forming fluids, in combination with the origin of ore forming matter, gold behaviour in the ore forming fluids, equilibrium ...
笔者通过哀牢山蛇绿混杂岩带典型金矿床的物质组成、成矿规律、蚀变及控矿作用的研究,对哀牢山金矿带的成矿流体来源,成矿流体动力学、地球化学及物理化学性质进行了详细地讨论;对金矿的成矿物质来源,金在成矿流体中的存在形式,迁移过程中平衡、失稳沉淀等进行了详细地分析和探讨。
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Secondly, we established the method of HPLC to determine the content of liensinine in order to control the quality of phenol total base of plumula nelumbinis. With the method we compared three different solvent extraction, and the result showed alcohol-acid water-organic solvent was the best solvent extraction.
使用HPLC法对莲子心酚性总碱中的莲心碱进行质量控制,对三种莲子心酚性总碱的提取方法进行了对比,通过三种溶剂法对莲子心总碱进行提取的实验,结果表明,醇一酸水一有机溶剂提取法提取效率最高,总碱提取率达11.25%,莲心碱提取率为1.20%,此方法操作简便,溶媒易得。
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As a solvent, it was mixed with various quantity of pigskin collagen powder. During the dissolution, three kinds of heating methods were applied. The one was be heated in water bath directly, the second one was be heated in water by microwave radialization and the third one was be heated by microwave radialization directly.
通过普通水浴加热,微波辐射水浴加热和微波直接辐射加热三种方式研究了离子液体对胶原蛋白的溶解能力,对不同质量浓度的溶液进行傅里叶变换红外测定,分析溶液中的胶原蛋白结构的变化,最后,对溶液进行再生得到皮胶原蛋白膜,并进行红外分析。
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Large sets of engineering data in some tunnels were used as the training samples. The resubstitution method was introduced to verify the stability of BDA model and the ratio of mistake-discrimination is lower after the BDA model was trained.
以隧道工程中的大量实测资料作为学习样本进行训练,并利用回代确认估计法对训练后的模型进行检验,最后将该模型对隧洞的围岩情况进行预刚。
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The method comprises the following steps of: preparing and scraping polymer casting solution on the surface of clutch gold; conducting humidification treatment on the polymer casting solution by a humidifier or conducting phase inversion in non-solvent until phase inversion occurs in the polymer casting solution and micro porous membrane is formed; making use of the electrodeposition technology to allow tin or tutania to deposit on the surface of the clutch gold; conducting thermal treatment on the clutch gold with the protection of idle gas to obtain a Li-ion battery composite cathode electrode tab.
该方法包括如下步骤:配制聚合物铸膜液,并将聚合物铸膜液刮涂在铜箔表面;利用加湿器对铜箔上的聚合物铸膜液进行加湿处理,或在非溶剂中进行聚合物的相转化,直到聚合物铸膜液发生相转移形成微孔膜;通过电沉积工艺,使锡或锡合金通过微孔膜膜孔沉积在铜箔表面;铜箔在惰性气体的保护下进行热处理,得到锂离子电池复合物负极电极片。
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This article selects Cang county、Xian county and Botou city as the study area which have a large growning area. Using ecological-geology and geochemistry background materials based on previous reasearch results, takes out a geochemistry evaluation of the soil quality, The safety of Zizyphus jujube cv. Jinsi-xiaozao is tested, and especi.ally studied the character of nutrient element's migration and distribution in soil. This study aims to provides scientific basis for the construction of high-quality Zizyphus jujube cv.
本文选取金丝小枣种植面积较大的沧县、献县和泊头作为研究区,在研究区已有研究成果的基础上,利用生态地质背景资料和地球化学背景资料,对金丝小枣区土壤质量进行了地球化学评价,对金丝小枣区的金丝小枣进行了安全性评估,并对营养元素在土壤中的迁移分布特征进行了重点研究。
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According to this investigation based on absorption of CO〓 with dilute Na〓CO〓 solution in tubes with K-type and H-type static mixing elements, an external loop ALR with K-type static mixing elements was constructed and tested in the pilot scale as the reactor for replacing the traditional carbonating tower of chemical plant.
在实验室对K型、H型和O型反应器进行了稀纯碱溶液吸收混合气中的二氧化碳的研究基础上,又在工厂进行了K型气升式外环流反应器用于氨水吸收混合气中的二氧化碳生产碳酸氢铵的实验,以取代现在普遍使用的鼓泡式碳化塔。
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According to the theoretical analysis,the results show that the fresh air dehumidified before mixed with return air is more energy-saving among many kinds of realization shapes.Indoor exhaust used as regeneration air can also reduce the total energy consumption of the system.It may enhance the regeneration property when the recuperator is adopted to absorb energy to preheat the dilute liquid.
对此空调系统进行理论分析,得出如下结论:在溶液除湿蒸发冷却空调系统的多种实现形式中,新风经除湿后与回风混合比新回风混合后再除湿节能;将室内排风返回溶液再生器,进行热湿交换,既可加强对处理空气的预冷,回收排风冷量,又可提高再生器的效率,降低系统能耗;把回热器吸收除湿浓溶液中的部分热量用于溶液再生器的稀溶液预热,可以提高溶液的再生性能。
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The results show that although both Ni substitution and Mg vacancies are effective in desorbing hydrogen at lower temperatures, the substitution of Ni at the Mg site is energetically more favorable than the formation of Mg vacancies. The Ni atoms of NiF2 can replace some Mg atoms of MgH2 systems, the reaction of NiF2+3MgH2=MgF2+Mg2NiH4 during mill process is accelerated, thus, MgH2 with the higher stability can be changed into Mg2NiH4. Because of a ternary hydride Mg2NiH4 with lower stability forming, the dehydrogenating properties on Ni doped MgH2 systems are improved.
结果表明:Ni替代Mg和创造Mg空位对MgH2体系解氢而言,均发挥有益作用,而形成Mg空位所需能量(6.51 eV)高于Ni替代Mg所需能量(2.12 eV),表明低温下Ni替代Mg对MgH2体系解氢而言更有利,至此NiF2中的Ni替代MgH2中的Mg,有利于加速化学反应NiF2+3MgH2=MgF2+Mg2NiH4向右进行,使结构稳定的MgH2发生转变,生成结构不稳定的Mg2NiH4,这样体系解氢过程不是通过MgH2,而是转变为通过Mg2NiH4进行,因此,Ni掺杂提高了MgH2体系的解氢性能。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。