113,206 research outputs found
What’s wrong with ‘mental’ disorders? : a commentary on ‘What is a mental/psychiatric disorder? : from DSM-IV to DSM-V’ by Stein et al
No full textThe editorial by Stein et al. (2010) is timely and
relevant given the development of DSM-V and the
likely impact that such a development will have on
mental health services in the USA. The revision of the
DSM will also affect international psychiatric research
and global practice thanks to the interplay between the
development of DSM and ICD (Fulford & Sartorius,
2009). The editorial by Stein and colleagues is very rich
and there are many themes suitable for further examination
and discussion. For this response, however,
we have chosen to focus on two themes: the use of the
term ‘mental’ and the idea of psychiatric disorders
being ‘in’ an individual
Giovani ragazzi raccontano le loro storie di dislessia
No full textLa prospettiva «Student Voice» mira a valorizzare il ruolo attivo e impegnato degli studenti.
Il libro comprende vari capitoli e una ricca bibliografia con referenze che fanno riferimento al crescente numero di ricercatori che guidano il movimento e ne documentano le pratiche in varie parti del mondo (vedi Fielding, Prieto, 2002; Thiessen, Cook-Sather, 2007).
Nel capitolo 8 è trattato un problema oggi particolarmente dibattuto nel mondo della scuola: quello della dislessia. In Italia la legge 170/10 riconosce agli studenti con diagnosi di dislessia il diritto a compiere un percorso personalizzato. Di fronte ai dubbi degli insegnanti rispetto alle difficoltà di questi studenti e rispetto alle soluzioni di aiuto da progettare per loro, in questo lavoro, Elena Bortolotti dimostra che ascoltare gli stessi studenti dislessici può rappresentare uno strumento importante per ottenere indicazioni preziose sulla loro condizione scolastica, «dando credito» alle loro difficoltà in funzione dell’implementazione di percorsi didattici conformi alle loro necessità
Filtering techniques for efficient inversion of two-dimensional Nuclear Magnetic Resonance data
No full textThe inversion of two-dimensional Nuclear Magnetic Resonance (NMR) data requires the solution of a rst kind Fredholm integral equation with a two-dimensional tensor product kernel and lower bound constraints. For the solution of this ill-posed inverse problem, the recently presented 2DUPEN algorithm [V. Bortolotti et al., Inverse Problems , 33(1), 2016] uses multi-
parameter Tikhonov regularization with automatic choice of the regularization parameters. In this work, I2DUPEN, an improved version of 2DUPEN that implements Mean Windowing and Singular Value Decomposition filters, is deeply tested. The reconstruction problem with filtered data is formulated as a compressed weighted least squares problem with multi-parameter Tikhonov regularization. Results on synthetic and real 2D NMR data are presented with the main purpose to deeper analyze the separate and combined e effects of these filtering techniques on the reconstructed 2D distribution
2DNMR data inversion using locally adapted multi-penalty regularization
No full textGeologists and Reservoir Engineers routinely use time-domain nuclear magnetic resonance (NMR) to learn about the porous structure of rocks that hold underground fluids. In particular, two-dimensional NMR (2DNMR) technique is now gaining importance in a wide variety of applications. Crucial issue in 2DNMR analysis are the speed, robustness and accuracy of the data inversion process. This paper proposes a multi-penalty method with locally adapted regularization parameters for fast and accurate inversion of 2DNMR data. The method solves an unconstrained optimization problem whose objective function contains a data-fitting term, a single L1 penalty parameter and a multiple parameter L2 penalty. We propose an adaptation of the Fast Iterative Shrinkage and Thresholding (FISTA) method to solve the multi-penalty minimization problem, and an automatic procedure to compute all the penalty parameters. This procedure generalizes the Uniform Penalty principle introduced in [Bortolotti et al., Inverse Problems, 33(1), 2016]. The proposed approach allows us to obtain accurate 2D relaxation time distributions while keeping short the computation time. Results of numerical experiments on synthetic and real data prove that the proposed method is efficient and effective in reconstructing the peaks and the flat regions that usually characterize 2DNMR relaxation time distributions
Delusional beliefs and reason giving
No full textDelusions are often regarded as irrational beliefs, but their irrationality is not sufficient to explain what is pathological about them. In this paper we ask whether deluded subjects have the capacity to support the content of their delusions with reasons, that is, whether they can author their delusional states. The hypothesis that delusions are characterised by a failure of authorship, which is a dimension of self knowledge, deserves to be
empirically tested because (a) it has the potential to account for the distinction between endorsing a delusion and endorsing a framework belief; (b) it contributes to a
philosophical analysis of the relationship between rationality and self knowledge; and (c) it informs diagnosis and therapy in clinical psychiatry. However, authorship cannot provide a demarcation criterion between delusions and other irrational belief states
Itinerario 6
No full textL'escursione geologica proposta si svolge nell'Appennino bolognese, sino alle aree di crinale e propone una serie di stop illustranti i caratteri salienti delle unità a forte deformazione (tettoniti) e delle ofioliti delle unità liguri e le principali unità della successione epiligure
MUPen2DTool: A new Matlab Tool for 2D Nuclear Magnetic Resonance relaxation data inversion
No full textA great variety of applications requires to process two-dimensional NMR (2DNMR) data to obtain information about the materials properties. In order to face the increasing request for software to easily process 2DNMR data, in (Bortolotti et al. (2019) [1]), the authors released Upen2dTool, an open source MATLAB software tool implementing nonnegatively constrained uniform penalty locally adapted
norm-based regularization for 2DNMR data inversion. This paper presents MUPen2DTool a new open-source MATLAB software tool implementing an unconstrained multipenalty regularization method based on
and
norms. The new software MUPen2DTool outperforms Upen2dTool since the implemented uniform multipenalty method allows to compute very accurate 2DNMR data inversion at reduced computational cost. By means of MUPen2DTool, the user can choose among several types of NMR experiments, and the free software provides codes that can be used and extended easily. Furthermore, a MATLAB interface makes it easier to include users own data. The practical use is demonstrated in the reported examples of both synthetic and real NMR data
Difesa della scrittura doppia, di un ragioniere modenese; contiene 1̊. Gli elementi della scrittura doppia, che ne dimostrano la sua semplicità, e naturalezza, coll'aggiunta di nuovi mezzi per rinvenirne gli errori avventui.
No full textAttributed to Luigi Bortolotti by Luigi Cappi. cf. Massa, Giovanni, Trattato completo di ragioneria, v.12, p.288.Mode of access: Internet
Tecnica MRI Quantitativa nell’analisi di modelli di imbibizione dell’acqua in materiali porosi trattati con composti protettivi fluorurati ecologicamente sostenibili
No full textImmagini MRI di sezioni interne di materiali porosi consentono di valutare l’efficacia di prodotti e trattamenti protettivi al fine di ottimizzare protocolli di intervento. Sono stati sintetizzati prodotti contenenti blocchi perfluoropolieterei, solubili in alcol e in solventi idroalcolici, ma non in CFC. Mediante MRI quantitativa ed un software sviluppato ad hoc é stato possibile determinare l’altezza del fronte di imbibizione dell’acqua in campioni di biocalcarenite trattati con questi prodotti e con altri commerciali. Sono stati ottenuti buoni fit dei dati a modelli ottenuti partendo dal modello di Washburn [1]. I risultati dimostrano la migliore efficacia dei nuovi prodotti, non dannosi per l’ambiente.
[1] M. Gombia, V. Bortolotti, R.J.S. Brown, M. Camaiti, P. Fantazzini J Appl Phys 103 (2008) 094913
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