Gliomas are the most common primary brain malignancies, with different degrees of aggressiveness, variable prognosis and various heterogeneous histologic sub-regions, i.e., peritumoral edematous/invaded tissue, necrot...
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Electrocardiographic imaging (ECGI) reconstructs epicardial potentials and electrograms from body-surface electrocardiograms and a torso-heart geometry. For clinical purposes, local activation and recovery times are o...
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ISBN:
(纸本)9781509008964
Electrocardiographic imaging (ECGI) reconstructs epicardial potentials and electrograms from body-surface electrocardiograms and a torso-heart geometry. For clinical purposes, local activation and recovery times are often more useful than epicardial electrograms. However, noise and fractionation can affect estimation of activation and recovery times from reconstructed electrograms. Here, we employ a method for activation and recovery time estimation that detects the simultaneous presence of spatial and temporal features associated with a passing wavefront and evaluate this in a series of canine experiments. We show that estimation of activation times is more accurate when this spatiotemporal approach is used, however, recovery times are best determined with a temporal-only approach. Additional spatial smoothing further benefits activation and recovery time estimation in all cases. This results in a median beat origin localization error of only one centimeter, which could expedite catheter-based diagnostic evaluation and ablation in clinical settings.
Despite numerous recent efforts, 3D object retrieval based on partial shape queries remains a challenging problem, far from being solved. The problem can be defined as: given a partial view of a shape as query, retrie...
With the aim of resolving the issue of cluster analysis more precisely and validly, a new approach was proposed based on biogeography-based optimization (abbreviated as BBO) algorithm. (Method) First, we reformulated ...
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One of the main services that Adaptive Systems offer to their users is the provision of content that is tailored to individual user's needs. Some Adaptive Systems use a closed corpus content that has been prepared...
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There are many recent revolutionary technologies and advances in wireless communication and networking that changed the lives of millions of people around us. The wide spread of the Internet and the smart mobile devic...
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ISBN:
(纸本)9781509048526
There are many recent revolutionary technologies and advances in wireless communication and networking that changed the lives of millions of people around us. The wide spread of the Internet and the smart mobile devices which is equipped with wireless technologies to access the Internet, enabled people to contact each other regardless of their geographic location. These communications involve sharing and transferring sensitive information that must be protected. Therefore, there is an increasing need to secure the individuals and organizations data which is considered a big challenge in communication and networking systems nowadays. The cryptographic algorithms are used to provide many security services to secure the communication channels and networks such as authentication, data integrity and confidentiality. But, recently, there are cyber attacks on these crypto-functions and their implementations, mainly Side Channel Attacks. So, compromising the security of these algorithms implies compromising the security of the communication systems that are using them. Among the most known asymmetric encryption algorithms is the Elliptic Curve Cryptography which is used to protect sensitive data in many financial and government applications. In this research, we present most recent Side channel attacks on Elliptic Curve Cryptography. Also, we discuss the suitable effective countermeasures used to protect from these cyber attacks towards obtaining more secure communication systems.
The 2015 edition of the Linked data Mining Challenge, conducted in conjunction with Know@LOD 2015, has been the third edition of this challenge. This year's dataset collected movie ratings, where the task was to c...
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