Search results for "clos"
showing 10 items of 1439 documents
SAMSLAM: Simulated Annealing Monocular SLAM
2013
This paper proposes a novel monocular SLAM approach. For a triplet of successive keyframes, the approach inteleaves the registration of the three 3D maps associated to each image pair in the triplet and the refinement of the corresponding poses, by progressively limiting the allowable reprojection error according to a simulated annealing scheme. This approach computes only local overlapping maps of almost constant size, thus avoiding problems of 3D map growth. It does not require global optimization, loop closure and back-correction of the poses.
Łojasiewicz exponents, the integral closure of ideals and Newton polyhedra
2003
We give an upper estimate for the Łojasiewicz exponent $\ell(J,I)$ of an ideal $J\subseteq A(K^{n})$ with respect to another ideal I in the ring $A(K^{n})$ of germs analytic functions $f$ : $(K^{n},\mathrm{O})\rightarrow K$ , where $K=C$ or $R$ , using Newton polyhedrons. In particular, we give a method to estimate the Łojasiewicz exponent $\alpha_{0}(f)$ of a germ $f\in A(K^{n})$ that can be applied when $f$ is Newton degenerate with respect to its Newton polyhedron.
CCDC 241028: Experimental Crystal Structure Determination
2004
Related Article: R.Nunez, O.Tutusaus, F.Teixidor, C.Vinas, R.Sillanpaa, R.Kivekas|2004|Organometallics|23|2273|doi:10.1021/om030635h
Formulations and exact algorithms for the distance-constrained generalized directed rural postman problem
2017
[EN] The generalized directed rural postman problem is an arc routing problem with many interesting real-life applications, such as routing for meter reading. In this application, a vehicle with a receiver travels through a series of neighborhoods. If the vehicle gets closer than a certain distance to a meter, the receiver is able to record the gas, water, or electricity consumption. Therefore, the vehicle does not need to traverse every street, but only a few, to get close enough to each meter. We study an extension of this problem in which a fleet of vehicles is available. Given the characteristics of the mentioned application, the vehicles have no capacities but there is a maximum distan…
Garantías legales del concepto de privacidad: Entre el derecho al olvido y el nuevo reglamento europeo de protección de datos
2018
The operation of new technologies and the supply of digital goods involves for users to disclose their personal data. The market data is already a reality with the danger that this entails for the privacy of citizens. The new General Data Protection Regulation has created a new legal framework that aims to radically change the current model, giving users greater powers to control their data. A good example of this is the express statement, and for the first time, of the right to be forgotten, which allows citizens to digitally erase their data when other fundamental rights are endangered.
Determinación de la edad de un extranjero indocumentado : A propósito de la sentencia de la audiencia provincial de barcelona, de 24 de enero de 2020
2021
In recent years, immigration of minors has increased, which means that administrations establish a differentiated treatment for this sector of immigration due to the fact that they are minors; There are many aspects to take into account in these cases, including verifying the minority age, a fact that is more complicated when it comes to adolescents. This is what is analyzed by the Judgment of the Provincial Court of Barcelona, of January 24, 2020, which confirms the Resolution of the General Directorate of Attention to Children and Adolescents, which agreed to the closure of the homelessness file and the admission of the plaintiff in a Protection Center until the verification of their pers…
A reduction theorem for the generalised Rhodes' Type II Conjecture
2018
One of the milestones in the theory of semigroups and automata is the Krohn-Rhodes Theorem. It states that every finite semigroup S divides a wreath product of finite simple groups, each of them divisor of S, and finite aperiodic semigroups, i. e. semigroups with trivial maximal subgroups. The smallest number of groups in any Kohn-Rhodes decomposition is called the group complexity of the semigroup. Since there is no obvious way to compute the complexity of a finite semigroup in general, the decidability of this number is one of the most important open problems in finite semigroup theory and the search for the solution has led to the development of many tools and ideas that are useful in fi…
Contributions to Close-Enough Arc Routing Problems
2021
A pesar de carecer de datos específicos, se estima que el sector del transporte representa aproximadamente el 64% del consumo mundial de combustible, el 27% del consumo total de energía y el 23% de las emisiones mundiales de dióxido de carbono (CO2) relacionadas con la energía. Además, se prevé que el impacto medioambiental del sector del transporte aumente de forma drástica en los próximos años debido al efecto de la globalización, que ha eliminado barreras haciendo posible la accesibilidad a todos los lugares, productos y servicios del mundo. Por ello, el transporte se sitúa como uno de los principales retos en materia de desarrollo, para impulsar la prosperidad y lograr así un entorno so…
[1,2,3]Triazolo[1,5-a]piridinas y compuestos relacionados : aplicaciones en química supramolecular : actividad biológica
2013
Los heterociclos nitrogenados son moléculas clave dentro de numerosos campos científicos. En concreto, los triazoles han encontrado numerosas aplicaciones en química médica como antifúngicos (fluconazol, posaconazol), antidepresivos (trazodona) o anticancerígenos (triazoloacridonas). En este contexto se decidió sintetizar nuevos derivados de [1,2,3]triazolo[1,5-a]piridinas con el fin de explorar su capacidad de interaccionar con ADN y su actividad leishmanicida y antichagásica. Con este objetivo se ha utilizado la química clásica de las triazolopiridinas (reacción de litiación regioselectiva de este heterociclo, seguida de adición de un electrófilo), para obtener nuevos derivados con estruc…
In Silico Conformational Features of Botulinum Toxins A1 and E1 According to Intraluminal Acidification
2022
International audience; Although botulinum neurotoxins (BoNTs) are among the most toxic compounds found in nature, their molecular mechanism of action is far from being elucidated. A key event is the conformational transition due to acidification of the interior of synaptic vesicles, leading to translocation of the BoNT catalytic domain into the neuronal cytosol. To investigate these conformational variations, homology modeling and atomistic simulations are combined to explore the internal dynamics of the sub-types BoNT/A1 (the most-used sub-type in medical applications) and BoNT/E1 (the most kinetically efficient sub-type). This first simulation study of di-chain BoNTs in closed and open s…