extra space
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Author(s):  
Bosco Nirmala Priya, Et. al.

In current world, on account of tremendous enthusiasm for the big data extra space there is high odds of data duplication. Consequently, repetition makes issue by growing extra room in this manner stockpiling cost. Constant assessments have shown that moderate to high data excess obviously exists in fundamental stockpiling structures in the big data specialist. Our test thinks about uncover those data plenitude shows and a lot further degree of power on the I/O way than that on hovers because of for the most part high common access an area related with little I/O deals to dull data. Furthermore, direct applying data deduplication to fundamental stockpiling structures in the big data laborer will likely explanation space struggle in memory and data fragmentation on circles. We propose a genuine exhibition arranged I/O deduplication with cryptography, called CDEP (crowd deduplication with effective data placement), and rather than a limit situated I/O deduplication. This technique achieves data sections as the deduplication system develops. It is imperative to separate the data pieces in the deduplication structure and to fathom its features. Our test assessment utilizing authentic follows shows that contrasted and the progression based deduplication calculations, the copy end proportion and the understanding presentation (dormancy) can be both improved at the same time.


2021 ◽  
Author(s):  
Gilles Van Staen ◽  
Amelie Outtier ◽  
Hans De Backer

<p>The King Baudouin Stadium in Brussels is for many years the national stadium for football and athletics of Belgium. Being built in 1930 and renovated in 1995, one can image the stadium is outdated and not conform the current safety regulation. Since building a completely new stadium brought too many complexities with it, the latest idea is to renovate the current stadium. A major point of attention is the fan experience in the stadium, which is hard to achieve during football games when a running track is around the pitch. Therefore, a hybrid stadium with modular seats is suggested. It allows to modify the stadium in an ideal way for each event. Two different systems are worked out to move the stands, due to structural and financial considerations. One is based on the use of air cushions, while the other system makes use of cantilever beams. For both systems, it is important to protect the running track, when the stands are in football mode. This modular system creates a lot of extra space in the stadium and will enhance the atmosphere in the arena according to each type of event.</p>


Nature Energy ◽  
2020 ◽  
Vol 5 (9) ◽  
pp. 638-638
Author(s):  
Changjun Zhang
Keyword(s):  

Particles ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 355-363
Author(s):  
Valery V. Nikulin ◽  
Polina M. Petriakova ◽  
Sergey G. Rubin

The article considers a new mechanism of charge accumulation in the early Universe in theories with compact extra dimensions. The relaxation processes in the extra space metric that take place during its formation lead to the establishment of symmetrical extra space configuration. As a result, the initial accumulation of the number associated with the symmetry occurs. We demonstrate this mechanism using a simple example of a two-dimensional apple-like extra space metric with U ( 1 ) -symmetry. The conceptual idea of the mechanism can be used to develop a model for the production of the baryon or lepton number in the early Universe.


Symmetry ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 45 ◽  
Author(s):  
Sergey G. Rubin

The extra space paradigm plays a significant role in modern physics and cosmology as a specific case. In this review, the relation between the main cosmological parameters—the Planck mass and the Cosmological constants—and a metric of extra space is discussed. Matter distribution inside extra space and its effect on the 4-dimensional observational parameters is of particular interest. The ways to solve the fine-tuning problem and the hierarchy problem are analyzed.


2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Arkady A. Popov ◽  
Sergey G. Rubin

Abstract The evolution of sub-spaces in the framework of gravity with higher derivatives is studied. Numerical solutions to exact differential equations are found. It is shown that the initial conditions play crucial role in the space dynamic. Appropriate metrics describing an expanding and a stationary sub-space shed light on the well-known question: why our 3-dim space is large but an extra space is small and stable (if exists)? It is assumed that the values of parameters at high energies strongly depend on uncontrolled quantum corrections and, hence, are not equal to their values at low energies. Therefore, there is no way to trace solutions throughout the energy range, and we restrict ourselves to the sub-Planckian and the inflationary energies.


2019 ◽  
Vol 28 (13) ◽  
pp. 1941004 ◽  
Author(s):  
V. V. Nikulin ◽  
Sergey G. Rubin

We study restrictions imposed on the parameters of the Kaluza–Klein extra space supplied by the standard inflationary models. It is shown that the size of the extra space cannot be larger than [Formula: see text][Formula: see text]cm and the [Formula: see text]-dimensional Planck mass should be larger than [Formula: see text][Formula: see text]GeV. The validity of these estimates is discussed. We also study creation of stable excitations of scalar field as the result of the extra metric evolution.


2019 ◽  
Vol 16 (6) ◽  
pp. 50
Author(s):  
Phan Tan Quoc Quoc ◽  
Nguyen Quoc Huy

Sorting is one of important techniques for computer science as well as other technology areas; sorting is used mostly in searching, database management systems, scheduling, and computing algorithms. This paper aims to analyze the timing cost for some sorting techniques without comparison sorting such as Pigeonhole sort, Counting sort, Radix sort, and Bucket sort; these are sorting techniques with linear running time. Each technique is considered in running time, in-place, stable, and extra space if possible. The main contribution of the paper is experiments of sorting techniques in 90 large size test data. This is also a useful reference for working with sorting techniques.


2019 ◽  
Vol 74 (5) ◽  
pp. 387-446
Author(s):  
Jochem Hauser ◽  
Walter Dröscher

AbstractThis article attempts to explain the underlying physics of several recent experiments and astrophysical observations that have been mystifying the physics community for quite some time. So far, none of the advanced theories beyond the standard models of particle physics and cosmology have shown sufficient potential to resolve these mysteries. The reason for this failure may lie in the fact that these theories are based on the concept of extra space dimensions that appears to be in conflict with numerous experiments, in particular with recent Large Hadron Collider data. Therefore, the novel idea of extra number systems is introduced, replacing the idea of extra space dimensions. This approach is complemented by a set of fundamental physical principles that provide the constraints and guidelines for a modified physical formulation in agreement with known experimental reality. However, such a theory requires novel physical concepts in conjunction with novel symmetry groups. These groups give rise to additional types of matter, termed hypercomplex masses (which are responsible for the extreme hypercomplex gravitational fields, see below, and are also denoted as matter flavour), including, for instance, particles of negative mass, identified with dark matter. Furthermore, four-dimensional Minkowski spacetime, assumed to be a quasi de Sitter space $dS^{1,3}$dual spacetime, $DdS^{1,3}$, with imaginary time coordinate; that is, time is a complex quantity. The three spatial coordinates are shared by the two spacetimes. Dark matter is assumed to reside in $DdS^{1,3}$ and therefore is principally invisible. On the other hand, its gravitational interaction with ordinary matter (m ≥ 0) in spacetime $dS^{1,3}$ is directly perceptible. The novel group structure predicts the existence of a fourth particle family of negative masses; that is, besides the dark matter particle χ of mass $m_{\chi}\approx-80.77$ GeV/c2, there is the dark neutrino νχ of mass $m_{\nu_{\chi}}\approx-3.23$ eV/c2. Moreover, the hypercomplex group structure of gravity ($SU(2)\times SU(2)$) postulates three gravitational bosons for cosmological fields [resulting from Einstein’s theory of general relativity (GR)], the graviton $\nu_{G_{N}}$ with spin 2, the novel gravitophoton $\nu_{gp}$ with spin 1 (existence of weak gravitomagnetic fields of GR), and the quintessence particle νq with spin 0, which, when present, mediates an interaction between ordinary matter (m ≥ 0) and the ubiquitous scalar field of dark energy. In addition, the existence of extreme gravity fields (hypercomplex gravity) is postulated, based on the second group SU(2), and an interaction between electromagnetism and hypercomplex gravity is predicted, mediated by three additional hypercomplex-gravity bosons. Some long-standing problems of cosmology will be addressed; namely, the Big Bang scenario and the origin of dark energy and the nature of dark matter and their relation to the modified Newtonian dynamics hypothesis will be discussed.


Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 217 ◽  
Author(s):  
Shuzhuang Liu ◽  
Lu Xie ◽  
Qing Peng ◽  
Rui Li

With extra space, a carbon nanotube (CNT) could serve as an absorber of point defects, including helium interstitials, and outgas the accumulate helium via “nano-chimneys”. The radiation resistance of CNT/Fe has still not been fully understood. Herein, we investigated the influence of CNTs on low-energy helium irradiation resistance in CNT/Fe composites by molecular dynamic simulations. CNTs reduced the small and medium He clusters in the Fe matrix. When the incident energy of the He atoms was 300 eV, the He atoms aggregated at the outer surface of CNTs. CNTs postponed the formation of He bubbles. When the irradiation energy was higher than 600 eV, He atoms could penetrate the walls of CNTs and form clusters inside the single-walled CNTs or the space in double-walled CNTs—the latter presented better performance. The reduction of Frenkel pair point defects suggested the enhancement of radiation resistance by the presentation of CNTs. Our results might be useful for the material design of advanced steels for radiation resistance.


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