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We classify (up to an isomorphism in the category of affine groups) the complex crystallographic groups generated by reflections and such that d, its linear part, is a Coxeter group, i.e., d is generated by "real" reflections of order 2.

An application of approximate transformation groups to study dynamics of a system with distinct time scales is discussed. The utilization of the Krylov–Bogoliubov–Mitropolsky method of averaging to find solutions of the Lie equations is considered. Physical illustrations from the plasma kinetic theory...

For all almost affine (hyperbolic) Lie superalgebras, the defining relations are computed in terms of their Chevalley generators.

The conventional wheel is famous in the industrial mobile robot because it is simple to build and easy to control and to maneuver. On the other hand, the legged robot is complicated to control but has a high performance in locomotion like highly evolved legged-creatures. This research describes the four-legged...

Introduction: Lung cancer incidence rates, overall and by histologic subtypes, vary substantially by gender and smoking. This study’s aim was to review data regarding trends in the number of cases of different lung-cancer histologies and relate these to smoking habits by gender in Lebanon. Materials...

Cell separation technologies play a vital role in the graft engineering of hematopoietic cellular fractions, particularly with the rapid expansion of the field of cellular therapeutics. The CliniMACS Plus Instrument (Miltenyi Biotec) utilizes immunomagnetic techniques to isolate hematopoietic progenitor...

Background: Previous clinical studies have shown that the incidence of restenosis after carotid and coronary stenting varies with stent design and deployment configuration. This study aims to determine how stent design may affect in-stent hemodynamics in stented carotid arteries by means of Computational...

Gastrointestinal complications (GICs) represent the major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Differential diagnosis of GICs is of paramount importance since early and reliable identification of graft-versus-host disease (GVHD) is essential...

Neurofeedback systems have been found to be effective in the clinical rehabilitation of paralysis. However, most systems exist only for use with electroencephalography, which is cumbersome to apply to patients and has lower spatial resolution than Magnetoencephalography (MEG). Furthermore, the best practices...

In this paper, we give a unified construction of the recursion operators from the Lax representation for three integrable hierarchies: Kadomtsev–Petviashvili (KP), modified Kadomtsev–Petviashvili (mKP) and Harry Dym under n-reduction. This shows a new inherent relationship between them. To illustrate...

In this paper, we study the geodesic completeness of nondegenerate submanifolds in semi-Euclidean spaces by extending the study of Beem and Ehrlich [1] to semi-Euclidean spaces. From the physical point of view, this extend may have a significance that a semi-Euclidean space contains more variety of Lorentzian...

Introduction: There are several approaches to assess endothelial function using forearm ischemia - hyperaemia (FMD). The principal difference is whether flow is stopped in the root of the arm (proximal or P) or the wrist (distal or D). P induces “non pulsatile ischemia”, and D, “pulsatile ischemia”,...

Aims. We compared associations between common carotid intima-media thickness(IMT)) and coronary artery calcification(CAC)) and measures of cerebrovascular disease (CVD) in 3 ethnic groups. Methods. A community-based sample of 1331 men and women (47%White European (WE), 36% South Asian (SA) and 16% African...

Background: Carotid intima-media thickness (IMT) measured by B-mode ultrasound is a sensitive and non-invasive method for detection of subclinical cardiovascular disease (CVD) and is often used as primary outcome measure in clinical trials as a surrogate marker of CVD. The purpose of the present study...

Objectives. Retinal vessel diameters are a valid tissue biomarker for cardiovascular risk assessment. We aimed to assess the acute effects of different exercise intensities on retinal vessel diameters, and whether these effects differ between seniors and young adults. Methods. In this cross-over study,...

Central blood pressure may be a better predictor of cardiovascular risk than peripheral blood pressure. The central systolic blood pressure (cSBP) can be estimated from the late systolic shoulder of the radial pulse waveform (pSBP2). We compared pSBP2 with cSBP derived by a generalized transfer function...

Objectives. Myocardial fibrosis occurs early in hypertension and plays a major role in CV disease. Our goal was to assess the mutual influence of blood pressure (BP) and cardiovascular (CV) risk factors on diffuse myocardial fibrosis, as assessed non-invasively from Cardiovascular Magnetic Resonance...

Arterial stiffness, measured as aortic pulse wave velocity (PWV), and wave reflection, measured as augmentation index (AIx) are independent predictors, for total and cardiovascular morbidity and mortality. The aim of this study was to compare a new device, based on oscillometric pressure curves (Arteriograph)...

Objectives. Inhomogeneities of wall characteristics may relate to plaques in a nearby vessel. The aim of the present study is to investigate the association between spatial inhomogeneities of intima-media thickness (IMT) of the common carotid artery (CCA) and plaques in the internal carotid artery. Methods....

In this paper we derive some general recurrence relations between moments of progressively Type-II right censored order statistics from a general class of doubly truncated distributions, thus unifying the earlier results in this direction due to several authors.

The increasing demand for mobile learning is visibly driving educators to rethink their pedagogical theory in today’s Internet-enhanced society. This research reported and analyzed the survey results of 450 college students in Taiwan who used mobile English learning (MEL) with regards to usage frequency,...

Iris recognition is the highly trusted identification recognition technology among methods of biological recognition. In this paper, we use the back propagation algorithm to train the neural network, so as to establish the iris recognition system model. The experiment demonstrates that it has a high...

In this paper we are interested in developments of the elliptic functions of Jacobi. In particular a trigonometric expansion of the classical theta functions introduced by the author (Algebraic methods and q-special functions, C.R.M. Proceedings and Lectures Notes, A.M.S., vol 22, Providence, 1999, 53-57)...

Heisenberg motion equations in Quantum mechanics can be put into the Hamilton form. The difference between the commutator and its principal part, the Poisson bracket, can be accounted for exactly. Canonical transformations in Quantum mechanics are not, or at least not what they appear to be; their properties...

A two component vector generalization of the Sch ?afer-Wayne short pulse equation is derived. It describes propagation of ultra-short pulses in optical fibers with Kerr nonlinearity beyond the slowly varying envelope approximation and takes into account the effects of anisotropy and polarization. We...

In the present paper, a two-sided test in a family of multivariate distribution according to the Mahalanobis distance with mean vector and positive definite matrix is considered. First, a family of multivariate distribution is introduced, then using the likelihood ratio method a test statistic is computed....

This paper presents a new Self-repairing Control System (SRCS) for plants with actuator failures. The proposed SRCS uses the well-known Izhikevich spiking neuron model as a fault detector. When the actuator fails, the neuron model is excited and then spikes occur. Thus, counting up spikes makes it possible...

Life in modern society is increasingly connected by networks that link the world around us and create numerous exciting opportunities, new services and advantages for humanity. Yet concurrently, these underpinning networks have provided routes by which potentially dangerous and harmful incidents can...

Introduction: Parameters of wave reflection (augmentation pressure - AP or augmentation index – AIx) are powerful independent prognostic markers in patients with coronary artery disease. However, the invasive investigation of arterial waveforms is still confined to expensive equipment. The aim of this...