Search results for " format"
showing 10 items of 2156 documents
Contenidos biográficos de valor formativo para la educación del siglo xxi. Memorias escritas por mujeres de tiempos en que han sido olvidadas
2018
Este artículo muestra el interés de incorporar los egodocumentos de mujeres, textos narrativos en primera persona, como tipología de fuen-tes formativas mas allá de los grados y asignaturas de historia, especialmente en los de contenido sociológico. Los datos que se presentan se centran en la recuperación y visibilización de las acciones de las mujeres que vivieron durante la Guerra Civil en las comarcas de Lleida. La metodología se basa en el análisis cualitativo sistemático de las únicas 6 memorias escritas por ellas sobre sus trayectorias vitales en ese perio-do. El análisis de los espacios de socialización, los roles y vidas cotidianas que ellas recuerdan y escriben aportan muestras que…
Total Variation Based Image Restoration
2004
For the purpose of image restoration the process of image formation can be modeled in a first approximation by the formula [207] $$ {u_d} = Q\{ II(k*u) + n\} , $$ (1.1) where u represents the photonic flux k is the point spread function of the optical-captor joint apparatus П is a sampling operator, i.e., a Dirac comb supported by the centers of the matrix of digital sensors, n represents a random perturbation due to photonic or electronic noise, and Qis a uniform quantization operator mapping ℝ to a discrete interval of values, typically [0, 255].
The ATHENA X-ray Integral Field Unit (X-IFU)
2018
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States.
Left-handed metamaterial coatings for subwavelength-resolution imaging
2012
We report on a procedure to improve the resolution of far-field imaging by using a neighboring high-index medium that is coated with a left-handed metamaterial. The resulting plot can also exhibit an enhanced transmission by considering proper conditions to retract backscattering. Based on negative refraction, geometrical aberrations are considered in detail since they may cause a great impact in this sort of diffraction-unlimited imaging by reducing its resolution power. We employ a standard aberration analysis to refine the asymmetric configuration of metamaterial superlenses. We demonstrate that low-order centrosymmetric aberrations can be fully corrected for a given object plane. For su…
Early modern state formation in the margins? A review of early modern popular politics and limited royal power in the Polish-Lithuanian Commonwealth …
2017
The traditional historiography of early modern state-building has usually followed the western European paradigm of historiography, the usual models being France, England, Brandenburg-Prussia and Sweden. Regions that do not follow this paradigm have simply been left out and labeled “backward” or as “lagging behind”. In this literary review, our focus is on two different and rather surprising cases of early modern state formation: the Polish-Lithuanian Commonwealth and the Spanish colonial empire in Latin America. By following the scholarship on these two large conglomerates, we focus on two scholarly concepts: the idea of early modern realms as composite/conglomerate states, and state forma…
L'analyse locale, une problématique récurrente et évolutive
2002
This contribution explains the main lines of OREF interventions on the local dimension of the training and employment problematics from ten years of experiences in Burgundy. From four local analyses, the authors underline the development of problematics, regional institutional demand, analytic processes carried out, response to set objectives, for the realization of each study.
Les politiques régionales de financement de la formation professionnelle continue de 1986 à 1992
1998
journées d'étude du réseau des centres associés au CEREQ organisées par le groupe de recherche sur l'éducation et l'emploi, Nancy, 30-31 mai 1996; International audience; Financing of life-long training : regional policies from 1986 to 1992 After a reminder of the economic justification of decentralization, this paper presents the main institutional elements of the life-long trainings'decentralization in 1983. The period 1986 to 1992 is examined. The analysis process is structured on two main lines : to present the financial commitments'nature of the County concils ("Conseils régionaux") ; to compare expenditure of life-long training, realized as well by the government as by the enterprises…
ChemInform Abstract: Supramolecular Complexation for Environmental Control
2012
Supramolecular complexes offer a new and efficient way for the monitoring and removal of many substances emanating from technical processes, fertilization, plant and animal protection, or e.g. chemotherapy. Such pollutants range from toxic or radioactive metal ions and anions to chemical side products, herbicides, pesticides to drugs including steroids, and include degradation products from natural sources. The applications involve usually fast and reversible complex formation, due to prevailing non-covalent interactions. This is of importance for sensing as well as for separation techniques, where the often expensive host compounds can then be reused almost indefinitely. Immobilization of …
TBBPA causes neurotoxic and the apoptotic responses in cultured mouse hippocampal neurons in vitro
2015
Abstract Background Tetrabromobisphenol A (TBBPA) is a brominated flame retardant widely used in a variety of commercial and household products. TBBPA can become bioaccumulated in human body fluids, and also in different brain regions. The aim of the present study was to determine the viability and apoptosis of cultured mouse hippocampal neurons in vitro after exposure to TBBPA. Additionally, we examined the involvement of ROS generation in the effect of TBBPA. Methods Primary hippocampal neuron cultures were prepared from Swiss mouse embryos on day 17/18 of gestation. The cultures were treated with TBBPA at concentrations ranging from 1 nM to 100 μM for 30 min or 3, 6 or 24 h. To study apo…
Minimal Absent Words in Rooted and Unrooted Trees
2019
We extend the theory of minimal absent words to (rooted and unrooted) trees, having edges labeled by letters from an alphabet \(\varSigma \) of cardinality \(\sigma \). We show that the set \(\text {MAW}(T)\) of minimal absent words of a rooted (resp. unrooted) tree T with n nodes has cardinality \(O(n\sigma )\) (resp. \(O(n^{2}\sigma )\)), and we show that these bounds are realized. Then, we exhibit algorithms to compute all minimal absent words in a rooted (resp. unrooted) tree in output-sensitive time \(O(n+|\text {MAW}(T)|)\) (resp. \(O(n^{2}+|\text {MAW}(T)|)\) assuming an integer alphabet of size polynomial in n.