Search results for "Minimum"
showing 10 items of 327 documents
Migranti e lotta alla povertà. La Corte costituzionale nega il reddito di cittadinanza ai titolari del permesso di soggiorno per ricerca di un'occupa…
2022
Il commento analizza la recente sentenza n. 19/2022 della Corte costituzionale, in cui il Giudice delle leggi ha ritenuto costituzionalmente legittima la previsione legislativa, che subordina alla titolarità del permesso di soggiorno di lungo periodo l’ottenimento del reddito di cittadinanza per i migranti extracomunitari. The essay analyses the recent Italian constitutional court ruling (no. 19/2022), that deems constitutional social security law, which subordinates the granting of minimum income guaranteed to the ownership of permanent residence permit for non-EU citizens.
Impacto económico de las rentas mínimas: la Renta Valenciana de Inclusión
2019
Las Comunidades Autónomas son las principales responsables de la política de asistencia social en España. Recientemente, la Comunidad Valenciana ha reformado su sistema de rentas mínimas, instaurando la denominada Renta Valenciana de Inclusión. En el presente trabajo se calcula el impacto económico de este programa partiendo de una estimación ex-ante del gasto público a realizar. La estimación cuantifica el número de beneficiarios y el coste presupuestario de la medida; y compara estos resultados con las restantes Comunidades Autónomas. La Comunidad Valenciana se situaría entre las regiones españolas con mayor tasa de cobertura y con mayor gasto por habitante en este tipo de políticas. En b…
Resistance of Immobilized Lactic Acid Bacteria to the Inhibitory Effect of Quaternary Ammonium Sanitizers
2001
Abstract The inhibitory effect of quaternary ammonium sanitizers (QAS) on the fermentation activity of lactic acid bacteria was investigated. Benzalkonium chloride and didecyl dimethyl ammonium chloride show the same inhibitory effect. In MRS agar medium and MRS liquid medium their minimum inhibitory concentration was below 2 μg/mL. Interfering molecules in milk increased this concentration of inhibitory QAS above 8 μg/mL. Both growth and acidification were decreased but by immobilizing cells in calcium alginate gel beads this inhibitory effect could be reduced. The longer the beads were used for successive acidification and were colonized by lactic acid bacteria, the better was the acidifi…
Prediction and Interpretation of Some Pharmacological Properties of Cephalosporins Using Molecular Connectivity
1991
A method of molecular connectivity was used to study the pharmacological and antimicrobial properties of 34 cephalosporin antibiotics to verify its applicability to these parameters. By using Kier and Hall connectivity indices (Xi) as well as geometric indices (GIs), good correlation equations were obtained with a low number of variables. In some cases, such as the lethal dose for 50% of group (LD50) values and minimum inhibitory concentration (MIC) values for Pseudomonas aeruginosa, better regression equations were obtained with the GIs alone, confirming their alternative nature with respect to Xi, indices.
A Nondifferentiable Optimization Approach to Ratio-Cut Partitioning
2003
We propose a new method for finding the minimum ratio-cut of a graph. Ratio-cut is NP-hard problem for which the best previously known algorithm gives an O(log n)-factor approximation by solving its dually related maximum concurrent flow problem.We formulate the minimum ratio-cut as a certain nondifferentiable optimization problem, and show that the global minimum of the optimization problem is equal to the minimum ratio-cut. Moreover, we provide strong symbolic computation based evidence that any strict local minimum gives an approximation by a factor of 2. We also give an efficient heuristic algorithm for finding a local minimum of the proposed optimization problem based on standard nondi…
Joint LMMSE equalizer for HSDPA in full-rate space time transmit diversity schemes
2005
This contribution presents a joint linear minimum mean square error (LMMSE) equalizer for full-rate space-time transmit diversity multi-code schemes based on W-CDMA, featuring two and four transmit antennas. Specifically, high-rate, high load systems are targeted, in order to analyze the high speed downlink packet access (HSDPA) of 3GPP Release 6. We derive an equivalent transmission scheme to equalize the received sufficient statistic in a single stage. To reduce the effects of multipath and multiuser interference, and to provide spatial and frequency diversity at the receiver, an LMMSE equalizer is employed. Computer simulations confirm that the proposed schemes achieve robust performance…
Graph Topology Learning and Signal Recovery Via Bayesian Inference
2019
The estimation of a meaningful affinity graph has become a crucial task for representation of data, since the underlying structure is not readily available in many applications. In this paper, a topology inference framework, called Bayesian Topology Learning, is proposed to estimate the underlying graph topology from a given set of noisy measurements of signals. It is assumed that the graph signals are generated from Gaussian Markov Random Field processes. First, using a factor analysis model, the noisy measured data is represented in a latent space and its posterior probability density function is found. Thereafter, by utilizing the minimum mean square error estimator and the Expectation M…
Variational Formulations for Coupled BE/FE Methods in Elastostatics
1994
Ein gekoppeltes BEM/FEM-Problem aus der Elastostatik, ein typisches Substrukturproblem, wird im Rahmen der symmetrisch-definiten BEM behandelt. Es werden vier verschiedene Variationsformulierungen vorgestellt, in deren jeder die Transmissionsbedingungen gegenuber der Trennflache zwischen FE-Unterregion und BE-Unterregion die Rolle naturlicher Randbedingungen spielen. Zwei der oben erwahnten Formulierungen sind Stationaritatsprinzipien in gemischter Form, die anderen beiden sind Sattelpunkt-Prinzipien, d. h. Kombinationen des Rand-min-max-Prinzips entweder mit dem Prinzip der minimalen Gesamtpotentialenergie oder mit dem Prinzip der minimalen Gesamtkomplementaritatsenergie. Jedes der oben an…
Comparing Correlation Matrix Estimators Via Kullback-Leibler Divergence
2011
We use a self-averaging measure called Kullback-Leibler divergence to evaluate the performance of four different correlation estimators: Fourier, Pearson, Maximum Likelihood and Hayashi-Yoshida estimator. The study uses simulated transaction prices for a large number of stocks and different data generating mechanisms, including synchronous and non-synchronous transactions, homogeneous and heterogeneous inter-transaction time. Different distributions of stock returns, i.e. multivariate Normal and multivariate Student's t-distribution, are also considered. We show that Fourier and Pearson estimators are equivalent proxies of the `true' correlation matrix within all the settings under analysis…
Molecular Rearrangement of an Aza-Scorpiand Macrocycle Induced by pH: A Computational Study †
2016
Rearrangements and their control are a hot topic in supramolecular chemistry due to the possibilities that these phenomena open in the design of synthetic receptors and molecular machines. Macrocycle aza-scorpiands constitute an interesting system that can reorganize their spatial structure depending on pH variations or the presence of metal cations. In this study, the relative stabilities of these conformations were predicted computationally by semi-empirical and density functional theory approximations, and the reorganization from closed to open conformations was simulated by using the Monte Carlo multiple minimum method Financial support by the Spanish Ministerio de Economía y Competitiv…