Search results for "formula"
showing 10 items of 755 documents
Penalized logistic regression for small or sparse data: interval estimators revisited
2015
This paper focuses on interval estimation in logistic regression models fitted through the Firth penalized log-likelihood. In this context, many authors have claimed superiority of the Likelihood ratio statistic with respect to the (wrong) Wald statistic via simulation evidence. We re-assess such findings by detailing the inferential tools also including in the comparisons the (right) Wald statistic and other statistics neglected in previous literature. In particular, we assess performances of the CIs estimators by simulation and compare them in a real data set. Differently from previous findings, the Likelihood ratio statistic does not appear to be the best inferential device in Firth pena…
xloops - Automated Feynman diagram calculation
1998
The program package xloops, a general, model independent tool for the calculation of high energy processes up to the two-loop level, is introduced. xloops calculates massive one- and two-loop Feynman diagrams in the standard model and related theories both analytically and numerically. A user-friendly Xwindows frontend is part of the package. xloops relies on the application of parallel space techniques. The treatment of tensor structure and the separation of divergences in analytic expressions is described in this scheme. All analytic calculations are performed with Maple. We describe the mathematical methods and computer algebra techniques xloops uses and give a brief introduction how to …
Application of sequential injection analysis to pharmaceutical analysis.
2005
Sequential injection analysis is a well established tool for automation of pharmaceutical analysis. A short historical background of this technique is given as well as a brief discussion on the basic principles and potentials. The current applications of SIA in the pharmaceutical analysis are also described and discussed. The manifolds developed offer good analytical characteristics and are suitable for analysis of drug formulations, process analysis, drug-dissolution, drug-release testing and functional assays for screening potential drugs. The results obtained are in good agreement with those furnished by the application of the reference methods presented in the pharmacopoeias.
The vertical spectrum of H2CO revisited: (SC)2-CI and CC calculations
2003
The vertical electronic spectrum of formaldehyde has been studied by means of (SC)2-MR-SDCI and CCLR methods. Two basis sets of atomic natural orbitals (ANOs) complemented with a one-centre series of Rydberg orbitals were used. The first was taken from the CASPT2 study by Merchan, M., and Roos, B. O., 1995, Theoret. Chim. Acta, 92, 221, and may be described as C,O[4s3pld]/H[2slp] with a lslpld Rydberg series centred in the charge centroid of the 2B2 state of the cation. The second was a larger basis set that may be described as C,O[6s5p3d2f]/H[4s3p2d] + 3s3p3d in the same centre. The (SC)2 dressing may be applied efficiently to an MR-SDCI method and comparison with the dressed CAS-SDCI is s…
Il progetto di architettura nella città contemporanea
2015
Città contemporanea, abitare, riformulazione urbana, rappresentano un insieme nel quale continui studi e approfondite sintesi sono necessari per rendere più chiari i termini delle loro relazioni e i possibili scenari futuri. La città contemporanea chiama in causa una molteplicità di modelli insediativi che sfugge a logiche interpretative omogenee in quanto basati sulla sedimentazione di storie e percorsi sociali molto differenti; distribuiti in vario modo all’interno di un territorio fatto di centri storici, aree industriali dismesse, complessi residenziali periferici. Necessario risulta chiedersi quali siano oggi i linguaggi più idonei ed efficaci della ricerca architettonica ad intersecar…
DESIGN AND OPTIMIZATION OF A CHASSIS FOR A FORMULA SAE RACE CAR
2009
In this paper, the design process of a new chassis for a Formula SAE car is presented. The chassis is undoubtedly one of the most important parts of the car, both for the influence that it has on the vehicle dynamic behaviour, and because it is the main component that assures the driver safety. The new designed chassis is composed of many structural tubular bars and has been equipped with systems for the joining of all the auxiliary members. After the definition of the masses distribution and the choice of the main dimensions, preliminary CAD and FEM models have been carried out for the evaluation of the structural behaviour of this kind of vehicle. Successively, in order maximizing the tor…
Sulla struttura formulare delle 'actiones adiecticiae qualitatis’
2001
La monografia ha avuto ad oggetto specifico l’esame e la revisione, per certi aspetti, dell’ipotesi tradizionale riguardante la struttura tecnico-formulare delle azioni adiettizie. I più recenti studi sull’argomento pongono raramente l’attenzione sulla struttura formulare delle azioni adiettizie. La nostra indagine, invece, muove dalla convinzione che sia determinante e preliminare a qualsiasi indagine ulteriore lo studio e l’approfondimento della struttura delle actiones adiecticiae qualitatis. Essa costituisce, infatti, il presupposto fondamentale per la soluzione dei principali interrogativi relativi alla complessa problematica affrontata. Di conseguenza l’ attenzione si è incentrata par…
Denegare iudicium e denegare actionem
2015
The expressions denegare iudicium and denegare actionem are both used to point out the refusal on the part of the magistratus cum iurisdictione to grant the action. However, in the opinion of the author, these expressions have different meanings. Denegare iudicium is used in contexts that are not compatible with the granting of a formula provided with exceptiones; while denegare actionem is used when the praetor was given the opportunity either to refuse the granting of the action or to give a formula provided with exceptiones.
Recensione di M. Indra, Status quaestio. Studien zum Freiheisprozess im klassischen roemischen Recht, Berlin 2011, 1-314
2013
la recensione è volta a dare conto - in modo critico - del contenuto del saggio di Miriam
Studi sulle liti di libertà nel diritto romano
2010
Il lavoro è diviso in tre capitoli. Nel primo capitolo si adducono argomenti capaci di provare la risalenza delle liti di libertà - e delle regole speciali che le ispirano - all'età decemvirale. Inoltre si analizza il 'processo di Virginia' e si cercano di risolvere le antinomie e le aporie presenti nel racconto di Livio, mediante l'utilizzo di una fonte ignorata fin ora: l'Archeologia Romana di Dionigi di Alicarnasso. Nel secondo capitolo, una volta identificato il processo di Virginia con una lite di libertà, si utilizza il prezioso episodio per ricostruire alcuni tratti caratteristici delle liti di libertà nelle legis actiones: in particolare, il carattere solo eventuale dell'in ius voca…