Risk assessment of email accounts: Difference between perception and reality

The use of Internet is associated with a growing number of security threats. This thesis analyzes how users perceive the security of their email account based on the email account provider. With our study, we aim to contribute to the information security systems literature in three ways: First, by taking a more complete view on security online, and reviewing the concept of usable security, usability, human-computer interaction, trust and user perception. Second, by performing an analysis of providers of online services specifically emails. Third, by applying a renowned risk analysis method called Information Security Risk Analysis Method (ISRAM) for risk assessment. The ISRAM analysis revealed that Hotmail, Gmail and Yahoo email accounts have a medium risk level, while the reality analysis demonstrated no clearly more secure account provider with only low level risk counts

Fourth order Birkhoff regular problems with eigenvalue parameter dependent boundary conditions

A regular fourth order differential equation which depends quadratically on the eigenvalue parameter $\lambda$ is considered with classes of separable boundary conditions independent of $\lambda$ or depending on $\lambda$ linearly. Conditions are given for the problems to be Birkhoff regular

Self-adjoint higher order differential operators with eigenvalue parameter dependent boundary conditions.

Eigenvalue problems for even order regular quasi-differential equations with boundary conditions which depend linearly on the eigenvalue parameter λ can be represented by an operator polynomial (Formula presented.) where M is a self-adjoint operator. Necessary and sufficient conditions are given such that also K and A are self-adjoint.SP201

A new inertial condition on the subgradient extragradient method for solving pseudomonotone equilibrium problem

In this paper we study the pseudomonotone equilibrium problem. We consider a new inertial condition for the subgradient extragradient method with self-adaptive step size for approximating a solution of the equilibrium problem in a real Hilbert space. Our proposed method contains inertial factor with new conditions that only depend on the iteration coefficient. We obtain a weak convergence result of the proposed method under weaker conditions on the inertial factor than many existing conditions in the literature. Finally, we present some numerical experiments for our proposed method in comparison with existing methods in the literature. Our result improves, extends and generalizes several existing results in the literature

Social Representations of Deafness and Psychological Suffering in Parents of Deaf Children

The core problematic of the present study is the relationship between the deaf child and the hearing parents The objectives of the study are to describe the social representations of deafness and psychological suffering among parents of deaf children and to establish the link between their suffering and these social representations It is a cross-sectional study conducted from August 15 2011 to January 16 2012 in the ENT department Oto-Rhino Laryngology of the CHU Teaching hospital Sylvanus Olympio and at the school for the deaf EPHATA in Lom A sample of 127 participants was obtained using the all-comers method The data were collected using the semi-structured interview The results show that the psychological suffering of parents of deaf children is presented on three sphere

Mixing properties of nonstationary multivariate count processes

We prove absolute regularity ($\beta$-mixing) for nonstationary and multivariate versions of two popular classes of integer-valued processes. We show how this result can be used to prove asymptotic normality of a least squares estimator of an involved model parameter

Autoregressive models for time series of random sums of positive variables: Application to tree growth as a function of climate and insect outbreak

We present a broad class of semi-parametric models for time series of random sums of positive variables. Our methodology allows the number of terms inside the sum to be time-varying and is therefore well suited to many examples encountered in the natural sciences. We study the stability properties of the models and provide a valid statistical inference procedure to estimate the model parameters. It is shown that the proposed quasi-maximum likelihood estimator is consistent and asymptotically Gaussian distributed. This work is complemented by simulation results and applied to time series representing growth rates of white spruce (Picea glauca) trees from a few dozen sites in Quebec (Canada). This time series spans 41 years, including one major spruce budworm (Choristoneura fumiferana) outbreak between 1968 and 1991. We found significant growth reductions related to budworm-induced defoliation up to two years post-outbreak. Our results also revealed the positive effects of maximum summer temperature, precipitation, and the climate moisture index on white spruce growth. We also identified the negative effects of the climate moisture index in the spring and the maximum temperature of the previous summer. However, the model's performance on this data set was not improved when the interactions between climate and defoliation on growth were considered. This study represents a major advance in our understanding of budworm-climate-tree interactions and provides a useful tool to project the combined effects of climate and insect defoliation on tree growth in a context of greater frequency and severity of outbreaks coupled with the anticipated increases in temperature