Content Based Image Retrieval (CBIR) in Remote Clinical Diagnosis and Healthcare

Content-Based Image Retrieval (CBIR) locates, retrieves and displays images alike to one given as a query, using a set of features. It demands accessible data in medical archives and from medical equipment, to infer meaning after some processing. A problem similar in some sense to the target image can aid clinicians. CBIR complements text-based retrieval and improves evidence-based diagnosis, administration, teaching, and research in healthcare. It facilitates visual/automatic diagnosis and decision-making in real-time remote consultation/screening, store-and-forward tests, home care assistance and overall patient surveillance. Metrics help comparing visual data and improve diagnostic. Specially designed architectures can benefit from the application scenario. CBIR use calls for file storage standardization, querying procedures, efficient image transmission, realistic databases, global availability, access simplicity, and Internet-based structures. This chapter recommends important and complex aspects required to handle visual content in healthcare.Comment: 28 pages, 6 figures, Book Chapter from "Encyclopedia of E-Health and Telemedicine

Are Timing-Based Side-Channel Attacks Feasible in Shared, Modern Computing Hardware?

There exist various vulnerabilities in computing hardware that adversaries can exploit to mount attacks against the users of such hardware. Microarchitectural Attacks, the result of these vulnerabilities, take advantage of Microarchitectural performance of processor implementations, revealing hidden computing process. Leveraging Microarchitectural resources, adversaries can potentially launch Timing-Based Side-Channel Attacks in order to leak information via timing. In view of these security threats against computing hardware, we analyse current attacks that take advantage of Microarchitectural elements in shared computing hardware. Our analysis focuses only on Timing-Based Side-Channel Attacks against the components of modern PC platforms - with references being made also to other platforms when relevant - as opposed to any other variations of Side-Channel Attacks which have a broad application range. To this end, we analyse Timing Attacks performed against processor and cache components, again with references to other components when appropriate

Vibration Analysis of Rectangular Composite Plates in Contact with Fluid

[[abstract]]In this paper, the fluid–structure interaction problem is investigated. In particular, the vibration behavior of a rectangular composite plate in contact with fluid is studied. The fluid motion isaffected by the plate vibration and produces a significant increase ofthe kinetic energy in the whole system. Therefore, the naturalfrequencies of the plate in contact with fluid can be determined bycalculating the added virtual mass incremental factor (AVMIF), whichrepresents the increase of the kinetic energy due to the presence offluid. Once the natural frequencies of the rectangular composite incontact with fluid have been obtained, the forced vibration analysis canbe performed readily. In addition, the vibration of the plate in contactwith fluid for both simply supported and clamped boundary conditions is investigated; meanwhile, the vibration behavior for different platewidths and lengths is also studied

Nonlinear Vibration Analysis of An Elastic Plate Subjected To Heavy Fluid Loading In Magnetic Field

[[abstract]]In the present study, the non-linear vibration of an elastic plate subjected to heavy fluid loading in an inclined magnetic field is investigated. The structural non-linearity, fluid non-linearity, and the effects of magnetic field are all incorporated in the formulations to derive the governing equation of the plate. The method of multiple scales is adopted to determine the eigenvalues and mode shapes of the linear vibration, and then the amplitude of the non-linear vibration response of the plate is calculated. Based on the assumptions of ordering and formulations of multiple scales, it can be concluded that the linear dynamic behavior of the plate under heavy fluid loading but weak near-resonant loading is influenced by the effects of the fluid loading, linear structural rigidity and linear magnetic field, furthermore, the non-linear dynamic behavior of the plate under heavy fluid loading but weak near-resonant loading is dominated and controlled by the effects of the fluid loading, non-linear structural rigidity and non-linear magnetic field. Both thick and thin plates are investigated; the contributions due to the structural non-linearity and acoustic linear radiation damping are of the same order for a rather thick plate. For a thin plate, the structural non-linearity completely controls the behavior of the plate, which implies that in this case the effect of fluid loading is considerably negligible. In general, it can be concluded that both the effects of magnetic field and structural non-linearity play important roles only on the first few modes of the plate

Small Scale Effect on Flow-Induced Instability of Double-Walled Carbon Nanotubes

[[abstract]]Small scale effect on flow-induced instability of double-walled carbon nanotubes (DWCNTs) is investigated using an elastic shell model based on Donnell’s shell theory. The dynamic governing equations of DWCNTs are formulated on the basis of nonlocal elasticity theory, in addition, the van der Waals (vdW) interaction between the inner and outer walls is taken into account in the nonlocal shell modeling. The instability of DWCNTs that is induced by a pressure-driven steady flow is investigated. The numerical computations indicate that as the flow velocity increases, DWCNTs have a destabilizing way to get through multi-bifurcations of the first and second bifurcations in turn. It is concluded that the natural frequency of DWCNTs and the critical flow velocity of the flow-induced instability are strictly related to the ratio of the length to the outer radius of DWCNTs, the pressure of the fluid and the small scale effects. Furthermore, it is interesting to observe that as the small scale effects are considered, the natural frequencies and the critical flow velocities of DWCNTs decrease as compared to the results with the classical (local) continuum mechanics, therefore, the small scale effects play an important role on performing the instability analysis in the fluid-conveying DWCNTs

An Elastic Model for Non-Brownian Motion of Nanoparticles

[[abstract]]Recently, nanomechanics research has been quite popular and significant in estimating the mechanics properties of nanoparticle used in electronics engineering, material engineering, mechanical engineering, and construction engineering. Nanomachines working in the fluid are the size of Brownian particles, however, some movements, such as biomolecular motions in which the variance of nanoparticle position is nonlinear in tiny times, are therefore called non-Brownian motion. In the present study, we propose a model of a nanoparticle by considering it as an elastic body instead of assuming it is rigid. The modeling of the nanoparticle and then the modeling of impact transfer are adopted to predict the non-Brownian motion. By solving the stochastic governing equation for the nanoparticle, we are able to estimate the variance of nanoparticle motion with respect to time. The results based on the proposed model match with those by experimental observations. In conclusion, the proposed model can be adopted to measure the mechanics properties of nanoparticles; these properties will enable us to manipulate the nanoparticles such as biomolecules and to control an autonomous machine in nanosize