JavaScript is a requisite and a crucial part for developing WebPages and Websites whether it be a professional website or a simple page or whether you are  an experienced developer or a naïve person JavaScript is a must for Web Development. In this day and age , JavaScript Framework have become extra specialized and powerful …

Six Eccentric Compact Javascript Frameworks at a Glance Read More »

Matco-Norca has added a new eccentric plug valve to their vast product offering.

The bizarre life and legacy of Paul Erdős, the most prolific mathematician ever

Performers take to the streets of Edinburgh in one of the largest art festivals in the world, Festival Fringe.

A graph $G=(V,E)$ is $delta$-hyperbolic if for any four vertices $u,v,w,x$, the two larger of the three distance sums $d(u,v)+d(w,x)$, $d(u,w)+d(v,x)$, and $d(u,x)+d(v,w)$ differ by at most $2delta geq 0$. Recent work shows that many real-world graphs have small hyperbolicity $delta$. This paper describes the eccentricity terrain of a $delta$-hyperbolic graph. The eccentricity function $e_G(v)=max{d(v,u) : u in V}$ partitions the vertex set of $G$ into eccentricity layers $C_{k}(G) = {v in V : e(v)=rad(G)+k}$, $k in mathbb{N}$, where $rad(G)=min{e_G(v): vin V}$ is the radius of $G$. The paper studies the eccentricity layers of vertices along shortest paths, identifying such terrain features as hills, plains, valleys, terraces, and plateaus. It introduces the notion of $eta$-pseudoconvexity, which implies Gromov's $epsilon$-quasiconvexity, and illustrates the abundance of pseudoconvex sets in $delta$-hyperbolic graphs. In particular, it shows that all sets $C_{leq k}(G)={vin V : e_G(v) leq rad(G) + k}$, $kin mathbb{N}$, are $(2delta-1)$-pseudoconvex. Additionally, several bounds on the eccentricity of a vertex are obtained which yield a few approaches to efficiently approximating all eccentricities. An $O(delta |E|)$ time eccentricity approximation $hat{e}(v)$, for all $vin V$, is presented that uses distances to two mutually distant vertices and satisfies $e_G(v)-2delta leq hat{e}(v) leq {e_G}(v)$. It also shows existence of two eccentricity approximating spanning trees $T$, one constructible in $O(delta |E|)$ time and the other in $O(|E|)$ time, which satisfy ${e}_G(v) leq e_T(v) leq {e}_G(v)+4delta+1$ and ${e}_G(v) leq e_T(v) leq {e}_G(v)+6delta$, respectively. Thus, the eccentricity terrain of a tree gives a good approximation (up-to an additive error $O(delta))$ of the eccentricity terrain of a $delta$-hyperbolic graph.

In the present invention, one or both of an active wheel or a passive wheel is composed of an eccentric transmission wheel and is combined with a synchronous transmission belt for forming an eccentric wheel transmission wheel series, so that when the feet input forces at different angles from the treadle shafts of the treadles to an active wheel shaft combined on the active wheel through cranks, the active wheel forms different transmission speed ratios relative to the passive wheel according to the treadle angle, and random inward packing is performed to the transmission belt (100) of the engage end of the eccentric passive wheel (413) during the transmission for stabling the operation.

The present invention is structured by using one or both of an active wheel and a passive wheel being composed of an eccentric transmission wheel and being combined with a synchronous transmission belt for forming an eccentric wheel transmission wheel series, so that in the reciprocal treadle performed by the human's feet, when the feet input forces at different angles from the treadle shafts of the treadles to an active wheel shaft combined on the active wheel through cranks, the active wheel forms different transmission speed ratios relative to the passive wheel according to the treadle angle.

A vibratory device comprises a rotor and an eccentric weight. The eccentric weight is mounted to the shaft and has a center of mass that is offset from the shaft axis. The vibratory device is configured such that the eccentric weight is in a first rotational orientation relative to the shaft and rotates with the shaft when the shaft rotates in a first direction about the shaft axis and such that the eccentric weight is in a second rotational orientation relative to the shaft when the shaft rotates in an opposite second direction about the shaft axis. The vibratory device is further configured such that the eccentric weight automatically transitions from the first rotational orientation to the second rotational orientation when the shaft is switched from rotating in the first direction to rotating in the second direction.

The other day as I scurried away through the door of my bank, I collided with the grim reaper passing me on his way into the building.

The 42-year-old fashion designer showed off a pair of unreleased bright yellow Yeezy boots while heading to his office in Calabasas, California on Tuesday morning.

After hilariously pretending to reveal himself as a bald and scrawny man over the weekend in a viral Super Bowl ad, Jason Momoa stepped out with his signature flowing locks in New York City on Tuesday.

A true pop star is a bundle of contradictions. Marc Almond OBE is 62, and he still looks like a naughty boy. He's been a chart-topper, a cabaret artiste and an art-rocker.

Looking every inch the trend-setter, the iconic musician, 61, as she arrived at the Brooklyn's Howard Gilman Opera House ahead of her Madame X tour in New York City.

BRIAN VINER: A new film that families can enjoy together is a precious commodity at the moment, rather like a bumper pack of loo rolls.

Catherine Tyldesley got into character once more in a bizarre cooking video during lockdown on Tuesday.

Coca Cola billionaire Alki David, 51, is offering Bill Cosby $10million to buy his 'digital likeness rights' so he can own the disgraced comedian's hologram.

Tyra Banks knows how to impress Beyonce. On Saturday, the 46-year-old took to Twitter to respond to a clip from her old show The Tyra Banks Show that has started to make its rounds on the internet.

NASSER HUSSAIN: How good is Steve Smith? You'd have to say he's up there with the all-time greats. The point of sending someone out of the door is to get runs, not to look pretty.

Dewey Library - PS3557.O753 Z57 2018