Personal identity verification based ECG biometric using non-fiducial features

Biometrics was used as an automated and fast acceptable technology for human identification and it may be behavioral or physiological traits. Any biometric system based on identification or verification modes for human identity. The electrocardiogram (ECG) is considered as one of the physiological biometrics which impossible to mimic or stole. ECG feature extraction methods were performed using fiducial or non-fiducial approaches. This research presents an authentication ECG biometric system using non-fiducial features obtained by Discrete Wavelet Decomposition and the Euclidean Distance technique was used to implement the identity verification. From the obtained results, the proposed system accuracy is 96.66% also, using the verification system is preferred for a large number of individuals as it takes less time to get the decision

Revisiting the spiral of silence in a social media environment: Egypt’s 2014 presidential election as a case study

With the advent of the Internet and anonymous features of online media, users have established novel platforms to voice their opinion freely without fear of negative feedback. This thesis explores the application of a long-standing public opinion theory– the spiral of silence by Elizabeth Noelle-Neumann–within the prevalent Social Networking Sites (SNS), particularly Facebook. When applying spiral of silence to online mediated environment, it seems intuitive that the lack of verbal cues and anonymity offered would serve to undermine the fear of isolation and restlessness that results in unwillingness to express minority views. This research contributes to understanding how the spiral of silence might operate in the social media era, and adds a view on how SNS influence opinion-forming variables. This study uses survey and in-depth interviews to assess willingness to speak out on political stands during the Egyptian presidential election of 2014. A survey was distributed to query Egyptian SNS users about their willingness to express their political opinion prior to casting votes in the nation’s 2014 presidential election. In-depth interviews were also conducted offering interpretations to the perception of the general opinion climate, and expected consequences of expressing views about controversial issues to Facebook\u27s friends. This study considered online negative feedback on the users\u27 profile as the form of fear of isolation, to accommodate new form of isolation in social media environment. Tests of negative evaluation fears showed no relation between sample\u27s apprehension of a negative feedback on facebook and their tendency to express their political opinion on the presidential election, questioning spiral of silence\u27s explanation of compelling social factors. Respondents with higher knowledge level showed higher tendency to express their views on the issue of the election than those with lower knowledge level regardless of their social belonging status. The perceived majority\u27s opinion showed no influence on users\u27 inclination to express views, nor did it influence willingness to enter a discussion with holders of opposing views. Willingness to speak out under a minority label was not affected in an online environment. Moreover, no statistical significance was found to indicate that spiral of silence existence is still embedded in a real-life setting. Contrary to literature on the spiral of silence, findings revealed equal attention paid to elements of close circle and community at large, and perceived importance of identifying their opinion on the presidential election prior to evaluating personal opinion. The author can be contacted at [email protected]

Stability-Indicating Micelle-Enhanced Spectrofluorimetric Method For Determination of Tamsulosin Hydrochloride In Dosage Forms.

A rapid, simple and highly sensitive spectrofluorimetric method is developed for the determination of Tamsulosin hydrochloride (Tams.HCl) in pharmaceutical formulations. The proposed method is based on investigation of the fluorescence spectral behavior of Tams.HCl in a sodium dodecyl sulphate (SDS) micellar system. In aqueous solution of Tris buffer of pH 7±0.2, SDS causes marked enhancement in the fluorescence intensity of Tams.HCl (about +110%). The fluorescence intensity is measured at 328 nm after excitation at 280 nm and the fluorescence-concentration plots are rectilinear over the range 0.1-1.2 µg ml-1, with lower detection limit of 0.027 µg ml-1 and quantification limit of 0.09 µg ml-1. The method is successfully applied to the analysis of the studied drug in its commercial capsules, and the results are in good agreement with those obtained with the official method. The application of the proposed method is extended to stability studies of Tamsulosin hydrochloride after exposure to different forced degradation conditions, such as acidic, alkaline and oxidative conditions, according to ICH guidelines

Peripheral and central pathways involved in the biodegradation of monoaromatic compounds under anaerobic conditions.

Overall, the work in this dissertation contributes to our understanding of anaerobic biodegradation pathways, the role of syntrophic interactions in substrates degradation, and demonstrates a novel benzoate fermentation ability in S. aciditrophicus. (Abstract shortened by UMI.)The metabolism of benzoate, cyclohex-1-ene carboxylate and cyclohexane carboxylate by Syntrophus aciditrophicus in coculture with hydrogen-using microorganisms was studied. Cocultures of S. aciditrophicus and Methanospirillum hungatei readily metabolized cyclohexane carboxylate and cyclohex-1-ene carboxylate at a rate slightly faster than that for benzoate. These results suggest that a unique ring-reduction mechanism operates in S. aciditrophicus which is probably imposed by energetic constraints encountered during syntrophic benzoate metabolism.The anaerobic degradation of monoaromatic compounds was studied under a variety of terminal electron-accepting conditions to test the susceptibility to and possible metabolic pathways involved in toluic acids degradation under methanogenic and sulfate-reducing conditions, to determine the pathway for benzoate degradation in the syntrophic bacterium Syntrophus aciditrophicus , as well as to determine whether toluene degradation under sulfate-reducing conditions is dependent on interspecies hydrogen transfer. All toluic acid isomers were degraded under sulfate-reducing conditions, with m-toluate degradation occurring at the fastest rate. Benzoate, isophthalate, and m-carboxybenzylsuccinate were detected as transient intermediates in m-toluate-degrading, sulfate-reducing enrichments. All three toluate isomers were also degraded under methanogenic conditions with phthalic, isophthalic and terephthalic acids transiently accumulating in the culture supernatants of o-, m- and p-toluate methanogenic cultures, respectively. o-Carboxybenzaldehyde was detected in the culture supernatant of o-toluate methanogenic enrichments. These results show that the biodegradation of toluic acids is initiated at the methyl group under both electron-accepting conditions and that the formation of m-carboxybenzylsuccinic acid is an early step in m-toluate degradation under sulfate-reducing conditions.S. aciditrophicus also metabolized benzoate in pure culture in the absence of hydrogen-utilizing partners or terminal-electron acceptors. S. aciditrophicus produced approximately 0.5 mol of cyclohexane carboxylate and 1.5 mol of acetate per mol of benzoate when grown in pure cultures compared to 3 mol of acetate and 0.75 mol of methane per mol of benzoate in coculture with M. hungatei

Diatom Assemblage in the Lake of Gaberoun, Southern Libya

The lake of Gaberoun in the southern district of Libya was studied to assess the diatom community composition in the littoral zone. Planktic and attached diatoms were listed and information on the constituent species made known (images are shown). Some criteria of the water characteristics are also given such as the pH, which is an average of 8.3, electrical conductivity which accounted for 1.4 µSim/cm1- and total dissolved salts (TDS) of 189.0mg/L1-

Comparative Transcriptomics and Genomics from Continuous Axenic Media Growth Identifies

Coxiella burnetii (Cb) is an obligate intracellular pathogen in nature and the causative agent of acute Q fever as well as chronic diseases. In an effort to identify genes and proteins crucial to their normal intracellular growth lifestyle, we applied a Reverse evolution approach where the avirulent Nine Mile Phase II strain of Cb was grown for 67 passages in chemically defined ACCM-D media and gene expression patterns and genome integrity from various passages was compared to passage number one following intracellular growth. Transcriptomic analysis identified a marked downregulation of the structural components of the type 4B secretion system (T4BSS), the general secretory (sec) pathway, as well as 14 out of 118 previously identified genes encoding effector proteins. Additional downregulated pathogenicity determinants genes included several chaperones, LPS, and peptidoglycan biosynthesis. A general marked downregulation of central metabolic pathways was also observed, which was balanced by a marked upregulation of genes encoding transporters. This pattern reflected the richness of the media and diminishing anabolic and ATP-generation needs. Finally, genomic sequencing and comparative genomic analysis demonstrated an extremely low level of mutation across passages, despite the observed Cb gene expression changes following acclimation to axenic media

Dynamical Analysis Of Fractional-Order Eco-Epidemiological Models Incorporating Harvesting

In this thesis, seven fractional-order eco-epidemiological models are formulated and analyzed: i) an eco-epidemiological model with infected prey incorporating harvesting; ii) an eco-epidemiological model with infected prey and logistic growth rate incorporating harvesting; iii) an eco-epidemiological model with infected prey and nonlinear incidence rate incorporating harvesting; iv) an eco-epidemiological model with infected predator and Holling type-II functional response incorporating harvesting; v) an eco-epidemiological model with infected predator and Holling type-IV functional response incorporating harvesting; vi) an eco-epidemiological model with two disease strains in the predator population incorporating harvesting; vii) a Hantavirus infection model incorporating harvesting. In order to clarify the characteristics of the proposed fractional-order eco-epidemiological models, existence, uniqueness, nonnegativity and boundedness of the solutions are analyzed. The local and global stability conditions of all biologically feasible equilibrium points of the proposed fractionalorder eco-epidemiological models are investigated by the Matignon’s condition and constructing suitable Lyapunov functions, respectively. The proof of the existence of transcritical bifurcation is given by using Sotomayor’s theorem. Numerical simulations are conducted to illustrate the analytical results. The proposed fractional-order ecoepidemiological models are shown to have rich dynamical behavior including bistability phenomena, supercritical Hopf bifurcation and transcritical bifurcation. The effects of fractional-order, infectious disease and harvesting on the stability of the proposed fractional-order eco-epidemiological models are investigated

Peristaltic transport of Johnson-Segalman fluid under effect of a magnetic field

The peristaltic transport of Johnson-Segalman fluid by means of an infinite train of sinusoidal waves traveling along the walls of a two-dimensional flexible channel is investigated. The fluid is electrically conducted by a transverse magnetic field. A perturbation solution is obtained for the case in which amplitude ratio is small. Numerical results are reported for various values of the physical parameters of interest

On The Solvability Of Some Diophantine Equations Of The Form ax+by = z2

The Diophantine equation ax+py = z2 where p is prime is widely studied by many mathematicians. Solving equations of this type often include Catalan’s conjecture in the process of proving these equations. Here, we study the non-negative integer solutions for some Diophantine equations of such family. We will use Mihailescu’s theorem (which is the proof of Catalan’s conjecture) and elementary methods to solve the Diophantine equations 16x −7y = z2, 16x − py = z2 and 64x − py = z2, then we will study a generalization where (4n)x − py = z2 and x, y, z,n are non-negative integers. By using Mihailescu’s theorem and a fundamental approach in the theory of numbers, namely the theory of congruence, we will determine the solution of the Diophantine equations 7x+11y = z2, 13x+17y = z2, 15x+17y = z2 and 2x+257y = z2 where x, y and z are non-negative integers. Also, we will prove that for any non-negative integer n, all non-negative integer solutions of the Diophantine equation 11n8x+11y = z2 are of the form (x, y, z) = (1,n,3(11) n2 ) where n is even, and has no solution when n is odd. Finally, we will concentrate on finding the solutions of the Diophantine equation 3x+ pmny = z2 where y = 1,2 and p > 3 a prime number