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    A New Biomarker for Alzheimer’s Based on the Hippocampus Image Through the Evaluation of the Surface Charge Distribution
    (2019-01-05) BELARDI, A. A.; DE O. FREITAS, F.; BECHELLI, R. P.; PIVA, R. G. G.
    © 2020 by Taylor & Francis Group, LLC.Alzheimer’s disease causes losses of the gray material and hippocampus is one of the first regions of the brain to be affected. The objective of this chapter is to present the hippocampus surface charge density distribution as a new approach to analyze hippocampal changes due to Alzheimer’s. We have developed a mathematical model using electrostatics equations together with the method of moments and Haar wavelet to build a practical tool in Matlab, able to efficiently calculate the surface charge densities of hippocampus using the hippocampal masks as input images. We tested the tool in 30 volunteers’ hippocampal masks, obtained from Alzheimer’s Disease Neuroimaging Initiative.
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    Information security management based on adaptive security policy using user behavior analysis
    (2012-01-05) BROSSO, I.; LA NEVE, A.
    This chapter presents a system for information security management based on adaptative security policy using user's behavior analysis in Information Technology. This system must be able to acquire information about the environment, space, time, equipment, hardware, and software. This information is used in the user behavior analysis. This work proposes that, based on the evidence of the user behavior, it is possible to trust or not trust the user. Levels of trust are released according to the user behavior and the rules that were previously established for the parameters, which help to establish the evidences of behavioral trust, interacting with the environment information, so as to keep trust levels updated in a more accurate and faithful way. © 2012, IGI Global.