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1.
The rapid technological convergence between Internet of Things(IoT),Wireless Body Area Networks(WBANs)and cloud computing has made e-healthcare emerge as a promising application domain,which has significant potential to improve the quality of medical care.In particular,patient-centric health monitoring plays a vital role in e-healthcare service,involving a set of important operations ranging from medical data collection and aggregation,data transmission and segregation,to data analytics.This survey paper firstly presents an architectural framework to describe the entire monitoring life cycle and highlight the essential service components.More detailed discussions are then devoted to {\em data collection} at patient side,which we argue that it serves as fundamental basis in achieving robust,efficient,and secure health monitoring.Subsequently,a profound discussion of the security threats targeting eHealth monitoring systems is presented,and the major limitations of the existing solutions are analyzed and extensively discussed.Finally,a set of design challenges is identified in order to achieve high quality and secure patient-centric monitoring schemes,along with some potential solutions. 相似文献
2.
APPAREIL Atelier Quentin de Coster Rachel Griffin Jonas Lutz CTRLZAK Daisuke Kitagawa Elina Ulvio Amanda Karsberg Dennis Graben Emmanuel Gonzalez Guzman Sanna V?lker Guilherme Wentz Laura Bilde Sara Moroni Axolight Valeria Vasileva Hi Thanks Bye 彭佳 《现代装饰》2019,(1)
<正>俄国画家马列维奇是"至上主义"抽象绘画流派的创始者,其绘画作品简约而纯粹,以最简单的形式——方块展现出艺术家丰富的感情世界,探索了形体、色彩与空间的关系。而同样善于运用几何形态的西班牙雕塑家奥泰萨的风格则显得冷静而克制,其雕塑作品通常看起来虚幻而抽象,没有强烈的情感表现,以高度理性化的手法展现出一种"虚无"的艺术境界。二人所专注的领域虽有不同,但他们的作品都在关注形式与其所在空间之间的复杂关系。 相似文献
3.
John F.MOXNES Anne K.PRYTZ ?yvind FR?YLAND Stian SKRIUDALEN Steinar B?RVE Gard ?DEG?RDSTUEN 《兵工学报(英文版)》2015,(1):1-9
For the characterization of the behaviors of a metal material in events like expanding warheads, it is necessary to know its strength and ductility at high strain rates, around 104e105/s. The flyer plate impact testing produces the uniform stress and strain rates but the testing is expensive. The Taylor test is relatively inexpensive but produces non-uniform stress and strain fields, and the results are not so easily inferred for material modeling. In the split-Hopkinson bar(SHB), which may be used in compression, tension and torsion testing, the strain rates never exceeds 103/s. In the present work, we use the expanding ring test where the strain rate is 104e105/s. A streak camera is used to examine the expanding ring velocity, and a water tank is used to collect the fragments. The experimental results are compared with the numerical simulations using the hydrocodes AUTODYN, IMPETUS Afea and a regularized smooth particle(RSPH) software. The number of fragments increases with the increase in the expansion velocity of the rings. The number of fragments is similar to the experimental results. The RSPH software shows much the same results as the AUTODYN where the Lagrangian solver is used for the ring. The IMPETUS Afea solver shows a somewhat different fragmentation characteristic due to the node splitting algorithm that induces pronounced tensile splitting. 相似文献
4.
论述了武钢平炉顶吹二次燃烧喷头结构的特点及射流特性,分析了二次燃烧氧枪工业性试验的结果,与单流氧枪相比,二次燃烧氧枪吹炼过程成渣快,脱磷脱硫效果改善,吹炼基本无溅,脱碳升温速度提高,平均每炉炉钢吹氧时间缩短20min。 相似文献
5.
December th is the fifth anniversary of China's entry into WTO. Over the past five years what AQSIQ has done in implementing the obligations enjoying the rights as a member of WTO? How's the performance? Facing with the current complicated barrier of technology trade worldwide how will China reply to it? For these questions reporters have made a special interview with Li Changjiang Minister of AQSIQ.…… 《中国标准化(英文版)》2007,(1):2-7
December 11th, 2006 is the fifth anniversary of China's entry into WTO. Over the past five years, what AQSIQ has done in implementing the obligations and enjoying the rights as a member of WTO? How's the performance? Facing with the current complicated barrier of technology trade worldwide, how will China reply to it? For these questions, reporters have made a special interview with Li Changjiang, Minister of AQSIQ. 相似文献
6.
Rastko Marta? Nikola Milivojevi? Vladimir Milivojevi? Vuka?in ?irovi? Du?an Bara? 崔弘毅 《大坝与安全》2017,(2)
主要论述了物联网在塞尔维亚大坝监测和管理中的应用。因其具有发电功效,水电站大坝极具重要性,但也应重视与之相关的风险。为在塞尔维亚大坝管理中利用与大坝设施有关的信息,需要对这些信息进行整合。基于现有的系统,开发了一套信息系统,其中使用了智能网络传感器。笔者旨在介绍物联网在特定大坝安全管理系统中的应用可能性。为能纳入大量的智能传感器,定义了一个新的与监测网络中的传感器进行通信的数据采集模块。该系统能在安全指数偏离预期值时及时提供预警。 相似文献
7.
8.
以富含铁的铜渣(CS)为原料,在碱激发条件下制备了铜渣基化学键合陶瓷材料(CSCBC),对废水中的Cr(Ⅵ)进行吸附处理。考察了吸附剂添加量、Cr(Ⅵ)初始浓度及pH等因素对Cr(Ⅵ)吸附效果的影响,并通过吸附动力学和热力学分析,结合吸附前后吸附材料结构表征,对其吸附机理进行了探讨。结果表明,当Cr(Ⅵ)初始质量浓度为200 mg/L、pH=1、吸附剂投加量为0.4 g时,在240 min内达吸附平衡,Cr(Ⅵ)去除率可达93%以上,最大理论吸附容量25.3 mg/g。与生物炭基铁氧化物复合材料、FeS复合材料、铁掺杂吸附剂等同类型吸附剂相比,Cr(Ⅵ)吸附容量明显提高。CSCBC对Cr(Ⅵ)的吸附过程符合准一级动力学模型和Langmuir等温吸附模型。其吸附机制主要是还原、吸附等双重作用的结果。 6次吸附-解吸实验后,其吸附容量保持初次吸附容量的75%以上 。 相似文献
9.
In this paper, to solve the consensus control problem of multi-manipulator systems under Markov switching topologies,
we propose a distributed consensus control strategy based on disturbance observer. In multi-manipulator systems, external
disturbance described by heterogeneous exogenous systems is considered, and all communication topologies are directed.
First, a disturbance observer is presented to suppress the influence of unknown external disturbance, and the equivalent
compensation is introduced into the control protocol in multi-manipulator systems. Then, a novel control protocol based on
neighbor information is designed, which guarantees that multi-manipulator systems reach consensus under Markov switching
topologies. Finally, two simulation examples verify the validity of the theoretical result. 相似文献