摘要：This article first respectively introduces the characteristics of product design and digital media technology, combined with knowledge of the new economic background and user participation trends in innovation, analyzed the shortcomings of traditional design expression and digital media technology, through the use of digital media flash design expression and method, to solve the problem of traditional design expression. Finally, through the expression model of digital media and interactive animation based on flash animation technology, showed that flash obtained the rapid development and application in the multimedia platform.

摘要：提出一种基于改进人工势场法且带有输入量化的欠驱动无人船编队协同避碰避障策略.借鉴导弹制导与控制机理,分层设计无人船运动学制导律与动力学控制律.首先,基于辅助变量法在无人船运动学子系统中设计分布式制导律,并引入改进人工势场法的斥力函数.通过重构制导律实现运动学层面的协同避碰避障以及欠驱动无人船期望轨迹的跟踪;其次,通过使用径向基神经网络对无人船动力学子系统中的外界干扰和系统未建模动态进行逼近,采用均匀量化器对输入变量进行量化并对量化过程进行线性描述,使得底层量化控制器无需预测关于量化参数的具体信息;在稳定性分析中,利用李雅普诺夫稳定性理论证明所设计USV编队跟踪控制系统的稳定性;最后,采用Matlab对理论策略进行仿真实验,仿真结果验证了所提出策略的有效性.

摘要：水环境质量预报预警是提升水污染防治现代化水平的重要支撑。提出了香溪河流域水环境磷风险平台技术体系,建立了香溪河流域水环境磷风险预报预警平台。该平台具备自动化收集多源异构的气象、水文、水质监测和污染源排放等底座数据并融合处理的功能,可为流域模型的边界条件和过程条件提供支撑,进一步对降雨过程、水文变化、总磷浓度和水环境风险提供预测和评价结果,并对2016年和2020年进行磷风险预报预警应用,为香溪河提升流域智慧化管理水平和推进磷风险管控提供技术支撑。

摘要：The energy-saving analytics of coal-fired power units in China is confronting new challenges especially with even more complicated system structure, higher working medium parameters, time-dependent varying operation conditions and boundaries such as load rate, coal quality, ambient temperature and humidity. Compared with the traditional optimization of specific operating parameters, the idea of the energy-consumption benchmark state was proposed. The equivalent specific fuel consumption(ESFC) analytics was introduced to determine the energy-consumption benchmark state, with the minimum ESFC under varying operation boundaries. Models for the energy-consumption benchmark state were established, and the endogenous additional specific consumption(ASFC) and exogenous ASFC were calculated. By comparing the benchmark state with the actual state, the energy-saving tempospacial effect can be quantified. As a case study, the energy consumption model of a 1000 MW ultra supercritical power unit was built. The results show that system energy consumption can be mainly reduced by improving the performance of turbine subsystem. This nearly doubles the resultant by improving the boiler system. The energy saving effect of each component increases with the decrease of load and has a greater influence under a lower load rate. The heat and mass transfer process takes priority in energy saving diagnosis of related components and processes. This makes great reference for the design and operation optimization of coal-fired power units.

摘要：使用DEFORM-3D三维模拟软件对哈氏合金基带的粗轧过程进行多道次仿真,依托流变应力的计算,建立了材料物性模型和仿真模型,并利用前几道次的粗轧实验验证了模型的准确性。通过仿真实验探索了压下率、轧辊形状和摩擦因数对轧制流程的影响。结果表明,随着道次压下率的升高,平均轧制力升高,30%道次压下率的轧制流程带来基带应变不均匀性是表面裂纹产生的重要原因,成功预测了后续轧制实验中带材表面产生的裂纹,实际生产应尽量选用20%及以下的压下率;在该应用条件中,新设计的凹面轧辊流程能有效减小轧制力,降低设备要求,提高轧制安全性,实验中部分流程采用凹面轧辊有效地将侧面裂纹的出现延迟到了第8道次;好的润滑条件能减小摩擦,模拟结果表明摩擦因数越小,基带轧制的均匀性越好,但会增加工序的时间,也会提高材料进给的难度。研究结果优化了实际轧制流程,降低了基带轧制过程中的表面及边部裂纹等缺陷。

摘要：随着我国社会经济的快速发展,石油化工行业也在规模化和集群化方面取得了显著进展。然而,化工企业的火灾和爆炸事故频繁发生,给人员和财产带来了严重损失,阻碍了企业的良性发展,不利于社会的和谐构建。基于对化工企业火灾爆炸事故的分析,总结了其内部存在的“三多”特点、现场处置的“三高”特点和灾情影响的“三大”特点,并进一步探讨了导致火灾爆炸的设备装置因素、工艺措施因素、消防设施因素、安全管理因素、处理能力因素和人员素质因素。最后提出了科学进行顶层设计、完善消防安全制度、加强企业自身安全建设和提升消防安全管理信息化水平等安全防控措施,旨在为化工企业火灾爆炸防控提供科学指导,提升其火灾风险防控能力,保障企业的安全生产和社会的和谐稳定。

摘要：The Accelerator Driven Sub-critical(ADS)system is a strategic plan to solve the nuclear waste problem for nuclear power plants in ***-energy particle accelerators and colliders contain long strings of superconducting devices,superconducting radio frequency cavities,and magnets,which may require cooling by 2 K superfluid helium(HeliumⅡ).2 K superfluid helium cryogenic system has become a research hot spot in the field of superconducting *** this study,the ADS Injector-I 2 K cryogenic system is examined in *** cryogenic system scheme design,key equipment,and technology design,such as the 2 K Joule–Thomson(J–T)heat exchanger and cryomodules CM1+CM2 design,are examined,in addition to the commissioning and operation of the cryogenic *** ADS Injector-I 2 K cryogenic system is the first 100 W superfluid helium system designed and built independently in *** ADS proton beam reached 10 Me V at 10 m A in July 2016 and 10 Me V at 2 m A in continuous mode in January 2017 and has been operated reliably for over 15,000 h,proving that the design of ADS Injector-I 2 K cryogenic system,the key equipment,and technology research are reasonable,reliable,and meet the *** research into key technologies provides valuable engineering experience that can be helpful for future projects such as CI-ADS(China Initiative Accelerator-Driven System),SHINE(Shanghai High Repetition Rate XFEL and Extreme light Facility),PAPS(Platform of Advanced Photon Source Technology),and CEPC(Circular Electron-Positron Collider),thereby developing national expertise in the field of superfluid helium cryogenic systems.

摘要：Underwater gliders are efficient mobile sensor platforms that can be deployed for months at a time, traveling thousands of kilometers. Here, we describe our development of a coastal 200 m deep underwater glider, which can serve as an ocean observatory platform operating in the East China Sea. Our glider is developed based on dynamic model analysis: steady flight equilibrium analysis gives the varied range of moving mass location for pitch control and the varied vehicle volume for buoyancy control; a stability analysis is made to discuss the relationship between the stability of glider motion and the location of glider wings and rudder by root locus investigation of glider longitudinal- and lateral-directional dynamics, respectively. There is a tradeoff between glider motion stability and control authority according to the specific glider mission requirements. The theoretical analysis provides guidelines for vehicle design, based on which we present the development progress of the Zhejiang University (ZJU) glider. The mechanical, electrical, and software design of the glider is discussed in detail. The performances of glider key functional modules are validated by pressure tests individually; preliminary pool trials of the ZJU glider are also introduced, indicating that our glider functions well in water and can serve as a sensor platform for ocean sampling.

摘要：We report the design of benzocyclobutene microring resonator of symmetric coupling made of a readily available polymer with a higher isolation of 43.8 dB, a finesse of 34, and a Q value of 1.5×105. The FDTD method predicts a drop efficiency of almost 80% for a gap of 0.55μm.

摘要：An experiment was conducted to investigate the requirement of nonphytate phosphorus（nPP） and efficacy of a genetically engineered yeast phytase（PHY A） for lingnan yellow broilers from 22-to 42-d-old age.A total of 1 320 1-d-old male chicks were randomly divided into 11 dietary treatment groups,which consisted of 4 replicate floor pens with 30 birds per *** control group（treatment 1） was fed with basal diet of nPP 0.08% without dicalcium phosphate or phytase *** levels of nPP were 0.16,0.24,0.32,0.40,0.48,and 0.56%,respectively,for treatments 2 to 7,through addition of dicalcium phosphate（chemistry grade） to the basal *** of treatments 8 to 11 were supplemented with PHY A at 200,400 and 600 U kg-1,a commercial phytase product（PHY B） at 400 U kg-1 level,*** birds in 0.32-0.56% nPP groups gained more than those of the other groups（P0.05）.The nPP supplementation significantly improved feed intake（P0.05）.The feed gain ratio was significantly decreased by 0.40% nPP diet compared to the control birds（P0.05）.The level of 0.48% nPP was required for optimum tibia *** additions of PHY A at 400 and 600 U kg-1 level and PHY B all significantly improved ADG（P0.05）,ADFI（P0.05）,and dry defatted tibia weight（P0.05）.Similarly,the percentage of tibia ash was increased by 600 U kg-1 PHY A supplementation（P0.05）.The requirement of nPP for maximal ADG and highest percentage tibia ash both was 0.40%.The phosphorus equivalency value of PHY A was estimated as 685 U kg-1 for male yellow broilers of 22-to 42-d-old age.