Search results for "Jordan"
showing 10 items of 59 documents
Cr(VI)/Cr(III) and As(V)/As(III) Ratio Assessments in Jordanian Spent Oil Shale Produced by Aerobic Combustion and Anaerobic Pyrolysis
2011
With the increase in the awareness of the public in the environmental impact of oil shale utilization, it is of interest to reveal the mobility of potentially toxic trace elements in spent oil shale. Therefore, the Cr and As oxidation state in a representative Jordanian oil shale sample from the El-Lajjoun area were investigated upon different lab-scale furnace treatments. The anaerobic pyrolysis was performed in a retort flushed by nitrogen gas at temperatures in between 600 and 800 °C (pyrolytic oil shale, POS). The aerobic combustion was simply performed in porcelain cups heated in a muffle furnace for 4 h at temperatures in between 700 and 1000 °C (burned oil shale, BOS). The high loss-…
Perturbations of Jordan Blocks
2019
In this chapter we shall study the spectrum of a random perturbation of the large Jordan block A0, introduced in Sect. 2.4: $$\displaystyle A_0=\begin {pmatrix}0 &1 &0 &0 &\ldots &0\\ 0 &0 &1 &0 &\ldots &0\\ 0 &0 &0 &1 &\ldots &0\\ . &. &. &. &\ldots &.\\ 0 &0 &0 &0 &\ldots &1\\ 0 &0 &0 &0 &\ldots &0 \end {pmatrix}: {\mathbf {C}}^N\to {\mathbf {C}}^N. $$ Zworski noticed that for every z ∈ D(0, 1), there are associated exponentially accurate quasimodes when N →∞. Hence the open unit disc is a region of spectral instability. We have spectral stability (a good resolvent estimate) in \(\mathbf {C}\setminus \overline {D(0,1)}\), since ∥A0∥ = 1. σ(A0) = {0}.
Do metric fluctuations affect the Higgs dynamics during inflation?
2017
We show that the dynamics of the Higgs field during inflation is not affected by metric fluctuations if the Higgs is an energetically subdominant light spectator. For Standard Model parameters we find that couplings between Higgs and metric fluctuations are suppressed by $\mathcal{O}(10^{-7})$. They are negligible compared to both pure Higgs terms in the effective potential and the unavoidable non-minimal Higgs coupling to background scalar curvature. The question of the electroweak vacuum instability during high energy scale inflation can therefore be studied consistently using the Jordan frame action in a Friedmann--Lema\^itre--Robertson--Walker metric, where the Higgs-curvature coupling …
Les paradoxes de l'emploi féminin sur le pourtour méditérranéen
2012
Cette invitation originale à un voyage sur le pourtour de la Méditerranée permet de mieux appréhender les raisons de la colère des jeunes. L'analyse comparative dans quatorze pays révèle les paradoxes de l'emploi féminin dans des contextes sociaux, démographiques, culturels et économiques, plus ou moins distants, à la lumière de données statistiques les plus récentes. Ces contrées reflètent une image pessimiste : en écho d'une segmentation du marché du travail, le chômage frappe particulièrement la jeunesse, les itinéraires des jeunes femmes ressemblent à un dédale d'incertitudes et de contradictions. Pourtant, certains pays leur offrent davantage d'opportunités.
Principio de jurisdicción universal y el conflicto árabe-israelí, Cristina García Pascual
2010
El muro de Cisjordania. Obstáculos para la garantía de los derechos humanos. Principio de jurisdicción universal y el conflicto árabe-israelí, Cristina García Pascual, Universitat de València. 11 de mayo de 2010. Institut Universitari de Drets Humans de la Universitat de València
El muro de Cisjoradina. Obstáculos para la garantía de los derechos humanos. Sobre el muro de Cisjordania y otros muros, Javier de Lucas. Preguntas (…
2010
El muro de Cisjordania. Obstáculos para la garantía de los derechos humanos. Presentación de las Jornadas, Consuelo Ramón (UV) y Lola Bañón (UNRWAce). Conferencia inaugural 'Sobre el muro de Cisjordania y otros muros' (preguntas). Javier de Lucas, Universitat de València. 3 de mayo de 2010. Institut Universitari de Drets Humans de la Universitat de València
Principio de jurisdicción universal y el conflicto árabe-israelí (debate), Cristina García Pascual
2010
El muro de Cisjordania. Obstáculos para la garantía de los derechos humanos. Principio de jurisdicción universal y el conflicto árabe-israelí (debate), Cristina García Pascual, Universitat de València. 11 de mayo de 2010. Institut Universitari de Drets Humans de la Universitat de València
Ordinary and graded cocharacter of the Jordan algebra of 2x2 upper triangular matrices
2014
Abstract Let F be a field of characteristic zero and U J 2 ( F ) be the Jordan algebra of 2 × 2 upper triangular matrices over F . In this paper we give a complete description of the space of multilinear graded and ordinary identities in the language of Young diagrams through the representation theory of a Young subgroup of S n . For every Z 2 -grading of U J 2 ( F ) we compute the multiplicities in the graded cocharacter sequence and furthermore we compute the ordinary cocharacter.
Algebras with involution with linear codimension growth
2006
AbstractWe study the ∗-varieties of associative algebras with involution over a field of characteristic zero which are generated by a finite-dimensional algebra. In this setting we give a list of algebras classifying all such ∗-varieties whose sequence of ∗-codimensions is linearly bounded. Moreover, we exhibit a finite list of algebras to be excluded from the ∗-varieties with such property. As a consequence, we find all possible linearly bounded ∗-codimension sequences.
Finite-dimensional non-associative algebras and codimension growth
2011
AbstractLet A be a (non-necessarily associative) finite-dimensional algebra over a field of characteristic zero. A quantitative estimate of the polynomial identities satisfied by A is achieved through the study of the asymptotics of the sequence of codimensions of A. It is well known that for such an algebra this sequence is exponentially bounded.Here we capture the exponential rate of growth of the sequence of codimensions for several classes of algebras including simple algebras with a special non-degenerate form, finite-dimensional Jordan or alternative algebras and many more. In all cases such rate of growth is integer and is explicitly related to the dimension of a subalgebra of A. One…