This paper is a thorough review of innovative architectures electro-hydraulic servovalves that exploit actuation systems based on piezo-electric materials. The use commercially available actuators, namely, piezo stacks, amplified rectangular benders, and ring very promising for the main stages pilot given fast response low weight piezoelectric these actuators can also allow novel designs to be ...

Several recent studies demonstrate a real potential in taking tubular structures as a base for image registration. In this paper, we present a novel technique to conduct deformations on tubular structures. Our approach aligns a pre-extracted tubular model, e.g. vessels inside an organ or a set of bones, with an image by combining both rigid and elastic transformations. The physical structure an...

This paper presents Pearling, a novel three-dimensional approach to the interactive segmentation and modeling of tubular structures from a volumetric image. Given a user-supplied initialization, Pearling extracts runs of pearls (balls) from the image, where each pearl is specified by a center position and radius. The runs are combined into a graph, with bifurcations and possibly loops. By treat...

distal renal tubular acidosis is a syndrome of abnormal urine acidification and is characterized by hyperchloremic metabolic acidosis, hypokalemia, hypercalciurea, nephrocalcinosis and nephrolithiasis. despite the presence of persistent hypokalemia, acute muscular paralysis is rarely encountered in males.here, we will report an eighteen year old male patient who presented with flaccid quadripar...

Owing to their remarkable electrochemical activities, 1T phase transition metal dichalcogenide (TMD) materials have attracted considerable interest in recent decades. However, metastable phases are difficult prepare and readily change phases. Therefore, for the first time, a monolayer nanotubular Ru comprising 92% of is synthesized, which highest value ever obtained using solvothermal methods. ...

The electric energy system is undergoing a major change due to the increasing requirements of dynamic performance. In distribution grids, this evolution will necessitate expanded automation, which in turn require enhanced connectivity solutions. Strongly evolving communications technologies and architectures, particularly mobile as well cloud edge computing, provide new opportunities alternativ...

Speaker diarization is an important problem that topical, and especially useful as a preprocessor for conversational speech related applications. The objective of this article two-fold: (i) segment initialization by uniformly distributing speaker information across the initial segments, (ii) incorporating discriminative features within unsupervised framework. In first part work, varying length ...

Using variable temperature 2 H static NMR spectra and 13 C spin-lattice relaxation times (T1 ), we show that two different porous organic cages with tubular architectures are ultra-fast molecular rotors. The central para-phenylene rings that frame the "windows" to the cage voids display very rapid rotational rates of the order of 1.2-8×106  Hz at 230 K with low activation energy barriers in the...