Search results for "CP [phase]"

TCP Performance in Mobile Ad hoc Networks

2013

International audience; In this paper, we present a survey of TCP (Transmission Control Protocol) protocol for better performance in the MANET (Mobile Ad Hoc Network). After a short presentation of the main features of TCP, we give the most important problems from which TCP suffer in MANET. We present after that some approaches proposed in the literature in order to improve its performance. Our paper contains also a performance evaluation of TCP NewReno and TCP Vegas transport protocols under AODV and DSR routing protocols. The simulations are conducted under varying conditions of number of TCP connections, number of nodes and mobility.

Interpretative model of shearband boudins internal evolution in HT ductile shear zones

2012

The internal structure of a shearband boudin resulting from an original igneous, hydrothermal or metamorphic segregation tabular rigid body is a subject of scientific interest. It allows understanding the deformation mechanisms acting on homogeneous quartz aggregate activated during simple shear progressive deformation. This work is focused on the characterization of the internal evolution of shearband boudins, using microtextural analysis, fluid inclusions studies, fractal and OCP analysis. The proposed interpretative model shows the several structural stages that can be well established during the process of the internal evolution of shearband boudin.

Variability Among Italian Citrus tristeza virus Isolates Revealed by SSCP Analysis, Cloning and Sequencing

2005

Linear-size suffix tries

2016

Suffix trees are highly regarded data structures for text indexing and string algorithms [MCreight 76, Weiner 73]. For any given string w of length n = | w | , a suffix tree for w takes O ( n ) nodes and links. It is often presented as a compacted version of a suffix trie for w, where the latter is the trie (or digital search tree) built on the suffixes of w. Here the compaction process replaces each maximal chain of unary nodes with a single arc. For this, the suffix tree requires that the labels of its arcs are substrings encoded as pointers to w (or equivalent information). On the contrary, the arcs of the suffix trie are labeled by single symbols but there can be Θ ( n 2 ) nodes and lin…

Mazā uzņēmuma IT infrastruktūras veidošana

2015

Kvalifikācijas darbā "Mazā uzņēmuma IT infrastruktūras veidošana" ir dokumentēta tīkla veidošana mazajam uzņēmumam pēc uzņēmuma vadības prasībām. Tika izmantots uzņēmuma serveris, kurš bija jāizpēta, lai noskaidrotu, kas ir nepieciešams uzlabot, lai tas varētu produktīvi un efektīvi strādāt, pildot visus uzdevumus. Tika izvēlēts virtualizācijas risinājums, lai uz viena fiziskā servera vienlaikus darbinātu vairākas virtuālās sistēmas, starp tām sadalot pieejamos resursus, kā arī, lai administratoram būtu vieglāk pārraudzīt un kontrolēt sistēmu, garantējot lielāku izmantojamību, ietaupot uzņēmuma līdzekļus. Rezultātā tika izveidota mazā uzņēmuma IT infrastruktūra, par kuras drošību arī tika p…

Lightweight LCP construction for very large collections of strings

2016

The longest common prefix array is a very advantageous data structure that, combined with the suffix array and the Burrows-Wheeler transform, allows to efficiently compute some combinatorial properties of a string useful in several applications, especially in biological contexts. Nowadays, the input data for many problems are big collections of strings, for instance the data coming from "next-generation" DNA sequencing (NGS) technologies. In this paper we present the first lightweight algorithm (called extLCP) for the simultaneous computation of the longest common prefix array and the Burrows-Wheeler transform of a very large collection of strings having any length. The computation is reali…

Determination of phosphorylation degrees in caseins by on-line gel electrophoresis coupled to ICP-SFMS

2007

The determination of the phosphorylation degree of proteins is essential in many biochemical fields. Besides mass spectrometric techniques elucidating the protein structure, ICP-MS has entered this research area as it provides excellent quantification capabilities. In this work the separation of the proteins has been carried out by gel electrophoresis on-line coupled to an ICP equipped with a double-focusing sector field-MS (ELEMENT 2). Based on the simultaneous detection of 32S+ and 31P+, this work presents an alternative approach to determining the phosphorylation degree of caseins. For the example of α- and β-casein the results obtained were in excellent agreement with the expected value…

FUZZY TCP: A PRELIMINARY STUDY

2002

Implementing efficient TCP for the Internet necessarily has to cope with the problem that the source does not know in advance which window allocation policy should be the best to use for a given network condition. In this paper, an on-line adaptive fuzzy system is used at the source in an objective to find the best possible weighted combination among the available policies.

New Physics adventures in the LHC age

2017

La física de partículas está viviendo actualmente una era de exploración que comenzó con la observación en el LHC del bosón de Higgs, proporcionando así al Modelo Estándar de la Física de Partículas la elusiva pieza final que lo completa. Si bien esta teoría es extremadamente exitosa, se acepta comúnmente que no es la teoría final ya que no puede responder a todas las preguntas teóricas ni a ciertas observaciones experimentales. Por lo tanto, se espera que Nueva Física que extienda al Modelo Estándar aparezca pronto, aunque esto bien podría ser sólo una esperanza. Esta tesis recoge algunas de las aventuras en la búsqueda de Nueva Física. Se organiza en tres partes: la Parte I introduce, en …

New generation low-energy probes for ultralight axion and scalar dark matter

2017

We present a brief overview of a new generation of high-precision laboratory and astrophysical measurements to search for ultralight (sub-eV) axion, axion-like pseudoscalar and scalar dark matter, which form either a coherent condensate or topological defects (solitons). In these new detection methods, the sought effects are linear in the interaction constant between dark matter and ordinary matter, which is in stark contrast to traditional searches for dark matter, where the sought effects are quadratic or higher order in the underlying interaction constants (which are extremely small).