Articoli di riviste: "Canonical procedures"

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Klauder, John R. "Revisiting canonical quantization". Modern Physics Letters A 29, n. 21 (7 luglio 2014): 1430020. http://dx.doi.org/10.1142/s0217732314300201.

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Conventional canonical quantization procedures directly link various c-number and q-number quantities. Here, we advocate a different association of classical and quantum quantities that renders classical theory a natural subset of quantum theory with ℏ > 0, in conformity with the real world wherein nature has chosen ℏ > 0 rather than ℏ = 0. While keeping the good results of conventional procedures, some examples are presented for which the new procedures offer better results than the conventional ones.

2

Klauder, J. R. "Coherent States and Coordinate-Free Quantization". Zeitschrift für Naturforschung A 52, n. 1-2 (1 febbraio 1997): 69–75. http://dx.doi.org/10.1515/zna-1997-1-219.

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Abstract The usual quantization procedures interpret canonical transformations in an active way linking them with unitary transformations, while the quantization procedure offered by coherent states completely separates classical canonical transformations and unitary operator transformations. By exploiting this property, along with a physically motivated shadow metric, it is seen how to realize the quantization process in as coordinate-free a form as holds in classical mechanics.

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KAELIN, AUGUST, e GEORGE S. MOSCHYTZ. "A NEW COMPREHENSIVE PROCEDURE FOR THE EXACT DESIGN OF CANONIC LDI-TYPE SC LADDER FILTERS". Journal of Circuits, Systems and Computers 01, n. 04 (dicembre 1991): 417–41. http://dx.doi.org/10.1142/s021812669100015x.

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A new procedure is given for the exact design of canonic LDI-type SC ladder filters realizing any elliptic discrete-time transfer function, including highpass functions. We show that, in contrast to known exact design procedures, the underlying prototype network should be terminated with so-called half-unit delays in order to preserve the capability of realizing any filter type. We will show, based on such ladder prototypes, simple and stray-insensitive LDI-type SC ladder filters can be derived, which are canonical for any filter type (i.e., every filter pole requires for its realization one stray-insensitive SC integrator without the need for additional amplifiers). Compared to common exact design procedures, simpler SC ladder structures are obtained, in particular, for highpass-type filters. Exact designs of canonic SC highpass ladder filters are presented and compared with corresponding biquad designs.

4

Klauder, John R. "Expending quantization procedures can help quantum field theories and gravity". Journal of Physics: Conference Series 2533, n. 1 (1 giugno 2023): 012020. http://dx.doi.org/10.1088/1742-6596/2533/1/012020.

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Abstract Sometimes, canonical quantization has difficulties that can be cured using a new quantization procedure called affine quantization. After briefly introducing this new procedure, we show that its approach to simple models ensures that a valid quantization can be obtained. These valid procedures then are used to help fields and gravity.

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Banerjee, R., e J. Barcelos-Neto. "Reducible Systems and Embedding Procedures in the Canonical Formalism". Annals of Physics 265, n. 2 (maggio 1998): 134–54. http://dx.doi.org/10.1006/aphy.1997.9998.

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Mütze, Tobias, Ekkehard Glimm, Heinz Schmidli e Tim Friede. "Group sequential designs with robust semiparametric recurrent event models". Statistical Methods in Medical Research 28, n. 8 (11 giugno 2018): 2385–403. http://dx.doi.org/10.1177/0962280218780538.

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Robust semiparametric models for recurrent events have received increasing attention in the analysis of clinical trials in a variety of diseases including chronic heart failure. In comparison to parametric recurrent event models, robust semiparametric models are more flexible in that neither the baseline event rate nor the process inducing between-patient heterogeneity needs to be specified in terms of a specific parametric statistical model. However, implementing group sequential designs in the robust semiparametric model is complicated by the fact that the sequence of Wald statistics does not follow asymptotically the canonical joint distribution. In this manuscript, we propose two types of group sequential procedures for a robust semiparametric analysis of recurrent events. The first group sequential procedure is based on the asymptotic covariance of the sequence of Wald statistics and it guarantees asymptotic control of the type I error rate. The second procedure is based on the canonical joint distribution and does not guarantee asymptotic type I error rate control but is easy to implement and corresponds to the well-known standard approach for group sequential designs. Moreover, we describe how to determine the maximum information when planning a clinical trial with a group sequential design and a robust semiparametric analysis of recurrent events. We contrast the operating characteristics of the proposed group sequential procedures in a simulation study motivated by the ongoing phase 3 PARAGON-HF trial (ClinicalTrials.gov identifier: NCT01920711) in more than 4600 patients with chronic heart failure and a preserved ejection fraction. We found that both group sequential procedures have similar operating characteristics and that for some practically relevant scenarios, the group sequential procedure based on the canonical joint distribution has advantages with respect to the control of the type I error rate. The proposed method for calculating the maximum information results in appropriately powered trials for both procedures.

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Kysor, Kragg, e Frederick Parente. "Development of a Distribution Free Multivariate Canonical Analysis". International Journal of Quantitative and Qualitative Research Methods 11, n. 1 (15 gennaio 2023): 47–57. http://dx.doi.org/10.37745/ijqqrm13/vol11n14757.

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This study illustrates the use of Median Polish analysis (MP) as a distribution free procedure that can be used to identify multivariate canonical data structures. The MP may be especially useful in situations where the sample sizes are small, or where the distributions do not meet the assumptions of conventional Canonical Correlation analysis (CC). We begin by comparing the CC and MP analyses with a sample multivariate data set. We go on to compare Type 1 error rates for each of these analyses using Monte Carlo procedures in which we manipulated sample size and skewness of the data distributions. Results indicated that Type 1 error was significantly higher for the CC relative to the MP when the distributions were skewed and/or when the sample sizes were n=20 or 30.

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Klauder, John R. "Enhanced quantum procedures that resolve difficult problems". Reviews in Mathematical Physics 27, n. 05 (giugno 2015): 1530002. http://dx.doi.org/10.1142/s0129055x15300022.

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A careful study of the classical/quantum connection with the aid of coherent states offers new insights into various technical problems. This analysis includes both canonical as well as closely related affine quantization procedures. The new tools are applied to several examples including: (1) A quantum formulation that is invariant under arbitrary classical canonical transformations of coordinates; (2) A toy model that for all positive energy solutions has singularities which are removed at the classical level when the correct quantum corrections are applied; (3) A fairly simple model field theory with non-trivial classical behavior that, when conventionally quantized, becomes trivial, but nevertheless finds a proper solution using the enhanced procedures; (4) A model of scalar field theories with non-trivial classical behavior that, when conventionally quantized, becomes trivial, but nevertheless finds a proper solution using the enhanced procedures; (5) A viable formulation of the kinematics of quantum gravity that respects the strict positivity of the spatial metric in both its classical and quantum versions; and (6) A proposal for a non-trivial quantization of [Formula: see text] that is ripe for study by Monte Carlo computational methods. All of these examples use fairly general arguments that can be understood by a broad audience.

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GERGATSOULIS, MANOLIS, e CHRISTOS NOMIKOS. "A PROOF PROCEDURE FOR TEMPORAL LOGIC PROGRAMMING". International Journal of Foundations of Computer Science 15, n. 02 (aprile 2004): 417–43. http://dx.doi.org/10.1142/s0129054104002509.

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In this paper, we propose a new resolution proof procedure for the branching-time logic programming language Cactus. The particular strength of the new proof procedure, called CSLD-resolution, is that it can handle, in a more general way, open-ended queries, i.e. goal clauses that include atoms which do not refer to specific moments in time, without the need of enumerating all their canonical instances. We also prove soundness, completeness and independence of the computation rule for CSLD-resolution. The new proof procedure overcomes the limitations of a family of proof procedures for temporal logic programming languages, which were based on the notions of canonical program and goal clauses. Moreover, it applies directly to Chronolog programs and it can be easily extended to apply to multi-dimensional logic programs as well as to Chronolog(MC) programs.

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Soto Jr., M. F., e R. Mirman. "Unitary-group canonical states and matrix elements". Canadian Journal of Physics 67, n. 8 (1 agosto 1989): 774–80. http://dx.doi.org/10.1139/p89-135.

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States of unitary groups are realized as multinomials in boson operators, symmetrized to give symmetric-group basis states. From these, matrix elements of the group generators are calculated using the procedures discussed here. A table of basis states and matrix elements of unitary-group representations, and the values of the invariants so generated, is given for SU(1) through SU(4), for all symmetric groups from S(1) through S(3).

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Kolokoltsov, Vassili. "On a probabilistic derivation of the basic particle statistics (Bose–Einstein, Fermi–Dirac, canonical, grand-canonical, intermediate) and related distributions". Transactions of the Moscow Mathematical Society 82 (15 marzo 2022): 77–87. http://dx.doi.org/10.1090/mosc/316.

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Combining intuitive probabilistic assumptions with the basic laws of classical thermodynamics, using the latter to express probabilistic parameters in terms of the thermodynamic quantities, we get a simple unified derivation of the fundamental ensembles of statistical physics avoiding any limiting procedures, quantum hypothesis and even statistical entropy maximization. This point of view also leads to some related classes of correlated particle statistics.

12

Bamberg, Anne. "Piero Amenta, Administrative Procedures in Canonical Marriage Cases: History, Legislation and Praxis". Revue des sciences religieuses, n. 86/3 (15 luglio 2012): 376. http://dx.doi.org/10.4000/rsr.1538.

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Joyeux, M., e D. Sugny. "Canonical perturbation theory for highly excited dynamics". Canadian Journal of Physics 80, n. 12 (1 dicembre 2002): 1459–80. http://dx.doi.org/10.1139/p02-075.

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This article proposes an unified presentation of recent results dealing with canonical perturbation theory (also called the contact transformation method in the quantum mechanical context), which shows how the theory is best handled for investigating the highly excited dynamics of small molecules. The following systems are successively addressed: (i) semi-rigid molecules (one electronic surface, one minimum), (ii) floppy molecules (one electronic surface, several minima), and (iii) non-BornOppenheimer dynamics (several interacting electronic surfaces). The perturbative Hamiltonians obtained from the proposed procedures are checked against exact calculations performed on ab initio surfaces (HCP and HCN) and model Hamiltonians. PACS No.: 31.15Md

14

Mattout, Jérémie, Richard N. Henson e Karl J. Friston. "Canonical Source Reconstruction for MEG". Computational Intelligence and Neuroscience 2007 (2007): 1–10. http://dx.doi.org/10.1155/2007/67613.

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We describe a simple and efficient solution to the problem of reconstructing electromagnetic sources into a canonical or standard anatomical space. Its simplicity rests upon incorporating subject-specific anatomy into the forward model in a way that eschews the need for cortical surface extraction. The forward model starts with a canonical cortical mesh, defined in a standard stereotactic space. The mesh is warped, in a nonlinear fashion, to match the subject's anatomy. This warping is the inverse of the transformation derived from spatial normalization of the subject's structural MRI image, using fully automated procedures that have been established for other imaging modalities. Electromagnetic lead fields are computed using the warped mesh, in conjunction with a spherical head model (which does not rely on individual anatomy). The ensuing forward model is inverted using an empirical Bayesian scheme that we have described previously in several publications. Critically, because anatomical information enters the forward model, there is no need to spatially normalize the reconstructed source activity. In other words, each source, comprising the mesh, has a predetermined and unique anatomical attribution within standard stereotactic space. This enables the pooling of data from multiple subjects and the reporting of results in stereotactic coordinates. Furthermore, it allows the graceful fusion of fMRI and MEG data within the same anatomical framework.

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KIM, WON TAE, e JOHN J. OH. "NONCOMMUTATIVE OPEN STRINGS FROM DIRAC QUANTIZATION". Modern Physics Letters A 15, n. 26 (30 agosto 2000): 1597–604. http://dx.doi.org/10.1142/s0217732300002127.

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We study Dirac commutators of canonical variables on D-branes with a constant Neveu–Schwarz two-form field by using the Dirac constraint quantization method, and point out some subtleties appearing in previous works in analyzing constraint structure of the brane system. Overcoming some ad hoc procedures, we obtain desirable noncommutative coordinates exactly compatible with the result of the conformal field theory in recent literatures. Furthermore, we find interesting commutator relations of other canonical variables.

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Meszáros, András, János Papp e Miklós Telek. "Fitting traffic traces with discrete canonical phase type distributions and Markov arrival processes". International Journal of Applied Mathematics and Computer Science 24, n. 3 (1 settembre 2014): 453–70. http://dx.doi.org/10.2478/amcs-2014-0034.

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Abstract Recent developments of matrix analytic methods make phase type distributions (PHs) and Markov Arrival Processes (MAPs) promising stochastic model candidates for capturing traffic trace behaviour and for efficient usage in queueing analysis. After introducing basics of these sets of stochastic models, the paper discusses the following subjects in detail: (i) PHs and MAPs have different representations. For efficient use of these models, sparse (defined by a minimal number of parameters) and unique representations of discrete time PHs and MAPs are needed, which are commonly referred to as canonical representations. The paper presents new results on the canonical representation of discrete PHs and MAPs. (ii) The canonical representation allows a direct mapping between experimental moments and the stochastic models, referred to as moment matching. Explicit procedures are provided for this mapping. (iii) Moment matching is not always the best way to model the behavior of traffic traces. Model fitting based on appropriately chosen distance measures might result in better performing stochastic models. We also demonstrate the efficiency of fitting procedures with experimental results

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DASZKIEWICZ, MARCIN. "CANONICAL, LIE-ALGEBRAIC AND QUADRATIC TWIST DEFORMATIONS OF GALILEI GROUP". Modern Physics Letters A 23, n. 21 (10 luglio 2008): 1757–68. http://dx.doi.org/10.1142/s0217732308027151.

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New Galilei quantum groups dual to the Hopf algebras proposed in Ref. 1 are obtained by the nonrelativistic contraction procedures. The corresponding Lie-algebraic and quadratic quantum spacetimes are identified with the translation sectors of considered algebras.

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Herdes, Carmelo, Miguel A. Santos, Francisco Medina e Lourdes F. Vega. "Precise Characterization of Selected Silica-Based Materials from Grand Canonical Monte Carlo Simulations". Materials Science Forum 514-516 (maggio 2006): 1396–400. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1396.

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We present results concerning the characterization of selected silica-based materials from a molecular modeling approach, together with some physical and mathematical tests to check the reliability of the obtained results. The experimental adsorption data is used in combination with Monte Carlo simulations and a regularization procedure in order to propose a reliable Pore Size Distribution (PSD). Individual adsorption isotherms are obtained by Monte Carlo simulations performed in the Grand Canonical ensemble. The methodology is applied to M41S materials, chosen due to their well defined pore geometry and pore size distribution, obtainable from alternative procedures. Our results are in excellent agreement with previous published results, demonstrating the reliability of this methodology for the characterization of other materials, with less well-defined structural properties.

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Kuschert, Sarah, Martin Stroet, Yanni Ka-Yan Chin, Anne Claire Conibear, Xinying Jia, Thomas Lee, Christian Reinhard Otto Bartling et al. "Facilitating the structural characterisation of non-canonical amino acids in biomolecular NMR". Magnetic Resonance 4, n. 1 (24 febbraio 2023): 57–72. http://dx.doi.org/10.5194/mr-4-57-2023.

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Abstract. Peptides and proteins containing non-canonical amino acids (ncAAs) are a large and important class of biopolymers. They include non-ribosomally synthesised peptides, post-translationally modified proteins, expressed or synthesised proteins containing unnatural amino acids, and peptides and proteins that are chemically modified. Here, we describe a general procedure for generating atomic descriptions required to incorporate ncAAs within popular NMR structure determination software such as CYANA, CNS, Xplor-NIH and ARIA. This procedure is made publicly available via the existing Automated Topology Builder (ATB) server (https://atb.uq.edu.au, last access: 17 February 2023) with all submitted ncAAs stored in a dedicated database. The described procedure also includes a general method for linking of side chains of amino acids from CYANA templates. To ensure compatibility with other systems, atom names comply with IUPAC guidelines. In addition to describing the workflow, 3D models of complex natural products generated by CYANA are presented, including vancomycin. In order to demonstrate the manner in which the templates for ncAAs generated by the ATB can be used in practice, we use a combination of CYANA and CNS to solve the structure of a synthetic peptide designed to disrupt Alzheimer-related protein–protein interactions. Automating the generation of structural templates for ncAAs will extend the utility of NMR spectroscopy to studies of more complex biomolecules, with applications in the rapidly growing fields of synthetic biology and chemical biology. The procedures we outline can also be used to standardise the creation of structural templates for any amino acid and thus have the potential to impact structural biology more generally.

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KHEYFETS, ARKADY, DANIEL E. HOLZ e WARNER A. MILLER. "THE ISSUE OF TIME EVOLUTION IN QUANTUM GRAVITY". International Journal of Modern Physics A 11, n. 16 (30 giugno 1996): 2977–3002. http://dx.doi.org/10.1142/s0217751x96001450.

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We discuss the relation between the concept of time and the dynamic structure of quantum gravity. We briefly review the problems of time associated with the standard procedures of gravity quantization. By explicitly utilizing York’s analysis of the geometrodynamic degrees of freedom, and imposing the constraints as expectation value equations, we describe a new procedure of gravity quantization. In particular, this “minimally constrained canonical” quantization procedure leads to a linear Schrödinger equation augmented by the super-Hamiltonian and supermomentum constraints imposed on expectation values. This approach supplies a description of time evolution in quantum geometrodynamics free from the standard problems of time associated with canonical approaches. Furthermore, the theory is applicable to the full theory of general relativity, without the need to impose symmetries or reduce dimensionality. Using this method we arrive at an analytic expression for the quantum evolution of the Kasner cosmology, as well as a numerically generated solution of the quantized Taub model. The key new feature of this approach is that we impose the constraints weakly — instead of the quantum-mechanical wave function satisfying the constraints exactly, it need only satisfy them on average. Thus the constraints only constrain the observables.

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de Lorenci, V. A., e E. S. Moreira. "Lessons from the Casimir Effect on a Spinning Circle". International Journal of Modern Physics A 18, n. 12 (10 maggio 2003): 2073–76. http://dx.doi.org/10.1142/s0217751x03015507.

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This work is a pedagogical account on the diagnosis of certain pathologies which arise when standard canonical quantization procedures are improperly used in the context of non globally hyperbolic spacetimes. The improper use of "helical times" to implement quantization is also addressed.

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H. Mahmutović, Esad, e Sanela Čajlaković Kurtalić. "THE ATTITUDES OF PARENTS AND AUDIOLOGISTS ON THE IMPLEMENTATION OF DIAGNOSTIC PROCEDURES IN CHILDREN WITH HEARING IMPAIRMENT". Journal Human Research in Rehabilitation 6, n. 1 (aprile 2016): 26–33. http://dx.doi.org/10.21554/hrr.041605.

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The aim of this study was to examine the attitudes of audiologists and hearing parents severely impaired children on the application of different ways of carrying out the diagnostic procedures. It was assumed that the attitudes of audiologists and parents of children with impaired hearing on the current - the classical method of performing diagnostic procedures unfavorable and that they need to be modernized with new information and communication technologies. The sample consisted of 90 subjects, divided into two subsample (45 audiologists and 45 parents). To estimate the attitudes applied questionnaire, specifically designed and tested for this study. Measuring response to claims made according to the Likert scale. For the processing of survey data were used descriptive analysis, one-way ANOVA and canonical discriminative analysis. By analyzing the data showed that there were unfavorable attitudes towards implementation of diagnostic procedures in the traditional manner and the need for their modernization of information and communication technologies. Also, it was found that there is a statistically significant difference in the attitudes of audiologists and parents towards the implementation of diagnostic procedures. The reasons for these results, visible on the basis of the coefficient of canonical discriminant function, can be traced to an insufficient level of knowledge of parents, low self-criticism audiologists to performing tasks, possibly their lack of expertise, as well as other latent causes.

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WARE, SIMON, e ROBI MALIK. "COMPOSITIONAL VERIFICATION OF THE GENERALIZED NONBLOCKING PROPERTY USING ABSTRACTION AND CANONICAL AUTOMATA". International Journal of Foundations of Computer Science 24, n. 08 (dicembre 2013): 1183–208. http://dx.doi.org/10.1142/s0129054113500287.

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This paper brings together two methods to compositionally verify the generalized non-blocking property, which is a weak liveness property to express the ability of concurrent systems to terminate under given preconditions. Appropriate notions of equivalence and refinement for the generalized nonblocking property are discussed, and abstraction rules to simplify finite-state automata accordingly are presented. The paper also presents a unique canonical automaton representation for all generalized nonblocking equivalent automata, which gives rise to more general means of abstraction and to effective decision procedures for generalized nonblocking equivalence. Experimental results demonstrate how abstraction rules and canonical automata can be combined to model-check large models of concurrent software.

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SHCHIGOLEV, V. K., e M. P. ROTOVA. "COSMOLOGICAL MODEL OF INTERACTING TACHYON FIELD". Modern Physics Letters A 27, n. 17 (giugno 2012): 1250086. http://dx.doi.org/10.1142/s0217732312500861.

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In this paper we investigate a tachyon field model in cosmology, provided its interaction with the quintessence or phantom fields. The model takes into account this interaction beyond the usual approach, in which the interaction is phenomenologically described by the energy flow between the matter components. In our model, the interaction of tachyon field with a canonical scalar field is taken into account through the interaction potential in the total Lagrangian of the system, like in the case of two or more canonical scalar fields. We obtain the different types of exact solution for the model by employing the so-called "first order formalism" procedures.

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Grigoryeva, Lyudmila, e Juan-Pablo Ortega. "Dimension reduction in recurrent networks by canonicalization". Journal of Geometric Mechanics 13, n. 4 (2021): 647. http://dx.doi.org/10.3934/jgm.2021028.

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<p style='text-indent:20px;'>Many recurrent neural network machine learning paradigms can be formulated using state-space representations. The classical notion of canonical state-space realization is adapted in this paper to accommodate semi-infinite inputs so that it can be used as a dimension reduction tool in the recurrent networks setup. The so-called input forgetting property is identified as the key hypothesis that guarantees the existence and uniqueness (up to system isomorphisms) of canonical realizations for causal and time-invariant input/output systems with semi-infinite inputs. Additionally, the notion of optimal reduction coming from the theory of symmetric Hamiltonian systems is implemented in our setup to construct canonical realizations out of input forgetting but not necessarily canonical ones. These two procedures are studied in detail in the framework of linear fading memory input/output systems. {Finally, the notion of implicit reduction using reproducing kernel Hilbert spaces (RKHS) is introduced which allows, for systems with linear readouts, to achieve dimension reduction without the need to actually compute the reduced spaces introduced in the first part of the paper.</p>

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Pereira, Valquíria Martins, Cristine Vanz Borges, Lívia Pinto Brandão, Larissa Santos Oliveira, Cintia Paula Feitosa Souza, Zalmar Santana Gonçalves, Sebastião de Oliveira e. Silva et al. "Genetic diversity between improved banana diploids using canonical variables and the Ward-MLM method". Pesquisa Agropecuária Brasileira 47, n. 10 (ottobre 2012): 1480–88. http://dx.doi.org/10.1590/s0100-204x2012001000010.

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The objective of this work was to estimate the genetic diversity of improved banana diploids using data from quantitative analysis and from simple sequence repeats (SSR) marker, simultaneously. The experiment was carried out with 33 diploids, in an augmented block design with 30 regular treatments and three common ones. Eighteen agronomic characteristics and 20 SSR primers were used. The agronomic characteristics and the SSR were analyzed simultaneously by the Ward-MLM, cluster, and IML procedures. The Ward clustering method considered the combined matrix obtained by the Gower algorithm. The Ward-MLM procedure identified three ideal groups (G1, G2, and G3) based on pseudo-F and pseudo-t² statistics. The dendrogram showed relative similarity between the G1 genotypes, justified by genealogy. In G2, 'Calcutta 4' appears in 62% of the genealogies. Similar behavior was observed in G3, in which the 028003-01 diploid is the male parent of the 086079-10 and 042079-06 genotypes. The method with canonical variables had greater discriminatory power than Ward-MLM. Although reduced, the genetic variability available is sufficient to be used in the development of new hybrids.

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Netz, Hadar, Zohar Eviatar e Ron Kuzar. "Do Marked Topics Enhance Memory?" Research in Language 9, n. 2 (30 dicembre 2011): 5–17. http://dx.doi.org/10.2478/v10015-011-0023-z.

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We examined the effects of markedness, the deviation from the canonical Subject-Verb-Object structure in English, on the memory of listeners for the topic of the sentence. We used three marked topic constructions: Left-Dislocation, Object-Fronting, and Subject-Marking. Sentences with these structures were inserted as the 6th item in lists of 12 canonical sentences. In all sentences the topic was the name of a man. We measured recall of the critical name. The results revealed that topics of Left-Dislocated sentences were recalled more than topics of the other constructions, with topics of Object-Fronting sentences recalled the least. We briefly discuss how sentence processing procedures might give rise to these effects.

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Rogosa, David, e Hilary Saner. "Longitudinal Data Analysis Examples With Random Coefficient Models". Journal of Educational and Behavioral Statistics 20, n. 2 (giugno 1995): 149–70. http://dx.doi.org/10.3102/10769986020002149.

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Longitudinal panel data examples are used to illustrate estimation methods for individual growth curve models. These examples constitute one of the basic multilevel analysis settings, and they are used to illustrate issues and concerns in the application of hierarchical modeling estimation methods, specifically, the widely advertised HLM procedures of Bryk and Raudenbush. One main expository purpose is to demystify these analyses by showing equivalences with simpler approaches. Perhaps more importantly, these equivalences indicate useful data analytic checks and diagnostics to supplement the multilevel estimation procedures. In addition, we recommend the general use of standardized canonical examples for the checking and exposition of the various multilevel procedures; as part of this effort, methods for the construction of longitudinal data examples with known structure are described.

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Ahn, Soohan, e V. Ramaswami. "Efficient algorithms for transient analysis of stochastic fluid flow models". Journal of Applied Probability 42, n. 2 (giugno 2005): 531–49. http://dx.doi.org/10.1239/jap/1118777186.

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We derive several algorithms for the busy period distribution of the canonical Markovian fluid flow model. One of them is similar to the Latouche-Ramaswami algorithm for quasi-birth-death models and is shown to be quadratically convergent. These algorithms significantly increase the efficiency of the matrix-geometric procedures developed earlier by the authors for the transient and steady-state analyses of fluid flow models.

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Ahn, Soohan, e V. Ramaswami. "Efficient algorithms for transient analysis of stochastic fluid flow models". Journal of Applied Probability 42, n. 02 (giugno 2005): 531–49. http://dx.doi.org/10.1017/s0021900200000504.

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We derive several algorithms for the busy period distribution of the canonical Markovian fluid flow model. One of them is similar to the Latouche-Ramaswami algorithm for quasi-birth-death models and is shown to be quadratically convergent. These algorithms significantly increase the efficiency of the matrix-geometric procedures developed earlier by the authors for the transient and steady-state analyses of fluid flow models.

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Lagges, Patrick R. "Administrative Procedures in Canonical Marriage Cases: History, Legislation, and Praxis by Piero Amenta (review)". Jurist: Studies in Church Law and Ministry 72, n. 2 (2012): 676–78. http://dx.doi.org/10.1353/jur.2012.0058.

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Cañadas, Agustín Moreno, Pedro Fernando Fernández Espinosa e Natalia Agudelo Muñetón. "Brauer configuration algebras defined by snake graphs and Kronecker modules". Electronic Research Archive 30, n. 8 (2022): 3087–110. http://dx.doi.org/10.3934/era.2022157.

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<abstract><p>Recently, Çanakçi and Schroll proved that associated with a string module $ M(w) $ there is an appropriated snake graph $ \mathscr{G} $. They established a bijection between the corresponding perfect matching lattice $ \mathscr{L}(\mathscr{G}) $ of $ \mathscr{G} $ and the canonical submodule lattice $ \mathscr{L}(M(w)) $ of $ M(w) $. We introduce Brauer configurations whose polygons are defined by snake graphs in line with these results. The developed techniques allow defining snake graphs, which after suitable procedures, build Kronecker modules. We compute the dimension of the Brauer configuration algebras and their centers arising from the different processes. As an application, we estimate the trace norm of the canonical non-regular Kronecker modules and some families of trees associated with some snake graphs classes.</p></abstract>

33

Jelinek, Janette, e Martin E. Morf. "Accounting for Variance Shared by Measures of Personality and Stress-Related Variables: A Canonical Correlation Analysis". Psychological Reports 76, n. 3 (giugno 1995): 959–62. http://dx.doi.org/10.2466/pr0.1995.76.3.959.

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Correlations were computed among the five personality scales of the NEO Personality Inventory, two measures derived from the Hassles Scale, and eight ways of dealing with stress measured by the Ways of Coping Questionnaire. Subjects were 66 undergraduate psychology students. Canonical correlation analysis suggests that multivariate procedures treating the data set as a whole can detect underlying patterns obscured by large sampling errors at lower levels of analysis.

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Rees, Wilhelm. "Pastoral Care for Migrants. Canonical and Religious Related Legal Requirements on Asylum and on the Change of Religion". Ecumeny and Law 9, n. 2 (31 dicembre 2021): 41–69. http://dx.doi.org/10.31261/eal.2021.09.2.02.

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Refugees and migrants have always been of particular concern to the Roman Catholic Church and its pastoral care. Even if the large influx of refugees happening in 2015 and 2016 is no longer the case, flight and migration are still relevant topics in Austria. The contribution deals with the historical development of canonical regulations, the situation of refugees and migrants in Austria, the legal basis, the implementation of asylum procedures and numbers, the statements of the Austrian Bishop’s Conference, the access to a Church or religious community and converting from one to another, the question of the Catholic Church’s necessity of salvation, regulations concerning catechumenate and the question of church asylum. It provides figures, data and facts, presents the canonical and state legal situation and analyses it. It tries to make weak points obvious and would like to provide help for future considerations.

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Stuart, Mari Jyväsjärvi. "Mendicants and Medicine: Āyurveda in Jain Monastic Texts". History of Science in South Asia 2, n. 1 (8 dicembre 2014): 63. http://dx.doi.org/10.18732/h27p45.

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While early canonical Jain literature may well justify the assessment that some scholars have made about the Jains’ stoic resistance to medical aid, later post-canonical Śvetāmbara Jain texts reveal in fact a much more complex relationship to practices of healing. They make frequent references to medical practice and the alleviation of sickness, describing various medical procedures and instruments and devoting long sections to the interaction between doctors and monastics as issues that a monastic community would have to negotiate as a matter of course. The amount of medical knowledge — indeed fascination with healing human ailments — evident in these later texts invites us to pause before concluding that pre-modern Jain monastic traditions were disinterested in alleviating physical distress. It seems that, on the contrary, the question of when and how to treat the sick within the community emerged as a central concern that preoccupied the monastic authorities and commentators and left its mark on the texts they compiled. Moreover, from the early medieval period onwards, Jains enter the history of Indian medical literature as authors and compilers of actual medical treatises. In what follows, I try to trace this historical shift in Śvetāmbara Jain attitudes to medicine and healing, from the early canonical texts to post-canonical commentaries on the mendicants’ rules. Specifically, I focus on the treatment of medicine in three monastic commentaries composed around the sixth and seventh centuries CE.

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Sreenivasan, Kartik K., Jason Vytlacil e Mark D'Esposito. "Distributed and Dynamic Storage of Working Memory Stimulus Information in Extrastriate Cortex". Journal of Cognitive Neuroscience 26, n. 5 (maggio 2014): 1141–53. http://dx.doi.org/10.1162/jocn_a_00556.

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The predominant neurobiological model of working memory (WM) posits that stimulus information is stored via stable, elevated activity within highly selective neurons. On the basis of this model, which we refer to as the canonical model, the storage of stimulus information is largely associated with lateral PFC (lPFC). A growing number of studies describe results that cannot be fully explained by the canonical model, suggesting that it is in need of revision. In this study, we directly tested key elements of the canonical model. We analyzed fMRI data collected as participants performed a task requiring WM for faces and scenes. Multivariate decoding procedures identified patterns of activity containing information about the items maintained in WM (faces, scenes, or both). Although information about WM items was identified in extrastriate visual cortex (EC) and lPFC, only EC exhibited a pattern of results consistent with a sensory representation. Information in both regions persisted even in the absence of elevated activity, suggesting that elevated population activity may not represent the storage of information in WM. Additionally, we observed that WM information was distributed across EC neural populations that exhibited a broad range of selectivity for the WM items rather than restricted to highly selective EC populations. Finally, we determined that activity patterns coding for WM information were not stable, but instead varied over the course of a trial, indicating that the neural code for WM information is dynamic rather than static. Together, these findings challenge the canonical model of WM.

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Савелюк, Наталія, e Тамара Ткач. "Psycholinguistic Peculiarities of Non-Canonical (Personal) Religious Discourse". PSYCHOLINGUISTICS 26, n. 1 (12 novembre 2019): 286–305. http://dx.doi.org/10.31470/2309-1797-2019-26-1-286-305.

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Introduction. The article reveals universal and specific features of non-canonical religious discourse. Religious discourse is generally defined as the process of cognitive-speech activity in a religiously relevant social and communicative situation, which involves the reception, transmission and/or creation (compilation) of certain religious texts in a certain context; and as the current result of this activity, which creates the corresponding discursive picture (model) of the world. The main genre of religious discourse is prayer – canonical (institutionalized) and non-canonical (non-institutionalized, personal). Non-canonical prayer is defined as an appeal to God, the text of which may contain both canonical fragments and individual verbal formulations of the subject. Materials & Techniques of the Research. The sample of empirical research is 543 persons of different age, social status, from different regions of Western Ukraine. Due to the use in the first stage of «Methods for the Study of Religious Activity» (D. Smirnov) and subtraction of quartiles, the whole initial sample is divided into four sub-samples of persons with different levels of religious activity. In the second stage, the verbalization of non-canonical religious discourses was recorded. The thus obtained 543 texts were subjected to content-analytic procedures using the «Textanz» computer program. The methods of psychosemantic and psycholinguistic textual analysis are used as the basis for the mentioned processing and interpretation of results. Results. According to the results of the study, universal patterns of psycholinguistic structure of non-canonical religious discourse were identified, connected with the activation of the «I–You» system and the verbal explication of a certain personal request and gratitude. Some specific semantic variations of the corresponding discourse, due to the level of religious activity of the subject, are also revealed. It is stated, in particular, that at its higher levels, the number and, consequently, the importance of the tokens of the noun category «Spiritual, psychic life» («love», «heart», etc.) are increasing. This demonstrates the importance of prayer for high-religious individuals, not only as an external means of support, but as an effective psychological resource for self-control.

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Fiejdasz-Buczek, Lidia. "The Concept of Relics and Canonical Recognition, Transfer and Preservation of the Mortal Remains of Servants of God According to the Instruction of the Congregation for the causes of Saints of 8 December 2017". Roczniki Nauk Prawnych 28, n. 3 ENGLISH ONLINE VERSION (28 ottobre 2019): 185–200. http://dx.doi.org/10.18290/rnp.2018.28.3-11en.

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For the first time since the reform of canon law in 1983, the terminology regarding relics was included in an official document of the Holy See. The Instruction distinguishes between significant and non-significant relics. Referring to the decrees of the Sacred Congregation of Rites, it shows the reasons why this particular division was rightly introduced. The bishop of the diocese or eparchy where the mortal remains are preserved is competent to perform all the possible procedures on them, provided he has previously obtained the consent of the heirs and the consent of the Congregation for the Causes of Saints (different variants are possible). Apart from a tribunal, the bishop nominates expert pathologists to perform technical procedures and two witnesses. The article discusses the procedures of canonical recognition of the remains, extraction of fragments in case of the imminent beatification, and some final operations.

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Ertmer, David J., Nancy Young, Kristine Grohne, Jennifer A. Mellon, Claire Johnson, Kristin Corbett e Kathy Saindon. "Vocal Development in Young Children With Cochlear Implants". Language, Speech, and Hearing Services in Schools 33, n. 3 (luglio 2002): 184–95. http://dx.doi.org/10.1044/0161-1461(2002/016).

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Purpose: This article describes prelinguistic vocal development in 2 prelingually deaf children who received multichannel cochlear implants at 10 and 28 months of age, respectively. Methods: Vocalizations were recorded in half-hour mother- child interactions before and after implantation and then classified into three levels of development: precanonical, canonical, and postcanonical. Results: One child made rapid progress in vocal development after her implant was activated. The other child showed slower progress with continued dominance of precanonical vocalizations throughout the first year of implant experience. Increases in vowel, diphthong, and consonant diversity; the establishment of canonical vocalizations; and the emergence of postcanonical forms were found to be indicators of progress in vocal development. Clinical Implications: Observed differences in the rate and completeness of vocal development between the 2 children suggest that some young implant recipients may need specialized intervention strategies to stimulate speech development. The rationale and procedures for implementing Short Periods of Prelinguistic Input (SPPI), a potentially useful approach for stimulating vocal development, are presented.

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Runco, Mark A., e Becky J. Thurston. "Students' Ratings of College Teaching: A Social Validation". Teaching of Psychology 14, n. 2 (aprile 1987): 89–91. http://dx.doi.org/10.1207/s15328023top1402_5.

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This investigation was conducted to demonstrate the applicability of social validation procedures to students' ratings of college teaching. The premise of social validation is that criteria should include items that are meaningful and important to consumers. This study is unique in that the criterion was based entirely on students' ideas about effective teaching. Results indicated that there was a significant canonical correlation between four scores from a conventional instrument and two socially valid criteria (Rc = .83). However, there were also important differences between the two measures. In particular, the socially valid instrument contained many items describing teachers' interpersonal behavior and presentation of class material, but only one item reflecting subject mastery. These results suggest that social validation procedures are applicable to and important for the evaluation of college teaching.

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Duarte, Luiza Carla, Fernando José Von Zuben e Sérgio Furtado dos Reis. "Orthogonal projections and bootstrap resampling procedures in the study of infraspecific variation". Genetics and Molecular Biology 21, n. 4 (dicembre 1998): 479–86. http://dx.doi.org/10.1590/s1415-47571998000400013.

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The effect of an increase in quantitative continuous characters resulting from indeterminate growth upon the analysis of population differentiation was investigated using, as an example, a set of continuous characters measured as distance variables in 10 populations of a rodent species. The data before and after correction for allometric size effects using orthogonal projections were analyzed with a parametric bootstrap resampling procedure applied to canonical variate analysis. The variance component of the distance measures attributable to indeterminate growth within the populations was found to be substantial, although the ordination of the populations was not affected, as evidenced by the relative and absolute positions of the centroids. The covariance pattern of the distance variables used to infer the nature of the morphological differences was strongly influenced by indeterminate growth. The uncorrected data produced a misleading picture of morphological differentiation by indicating that groups of populations differed in size. However, the data corrected for allometric effects clearly demonstrated that populations differed morphologically both in size and shape. These results are discussed in terms of the analysis of morphological differentiation among populations and the definition of infraspecific geographic units.

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BOLLINI, C. G., e L. E. OXMAN. "PROPAGATOR FOR COMPLEX-MASS FIELDS". International Journal of Modern Physics A 07, n. 27 (30 ottobre 1992): 6845–55. http://dx.doi.org/10.1142/s0217751x92003148.

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A complex-mass field obeys a Klein-Gordon equation with a complex-mass parameter. The usual canonical procedures and quantization lead to a Hamiltonian whose spectrum is continuous and extends from −∞ to +∞. The vacuum eigenstate (zero energy, zero momentum) belongs to this continuum and allows the calculation of vacuum expectation values of field operators. The propagator turns out to be half-advanced and half-retarded. It differs from the usual one, which is just the inverse of the differential Klein-Gordon operator, by the suppression of the free-field effect of poles.

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RENNIE, KRISTON R. "The Ceremonial Reception of Medieval Papal Legates". Journal of Ecclesiastical History 70, n. 1 (17 dicembre 2018): 18–37. http://dx.doi.org/10.1017/s0022046917002792.

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This article examines the ceremonial reception of papal legates in the early Middle Ages. It offers a precise, distinctive and normative portrait of their ritualised practice well before the existence of written canonical rules and procedures. The customs, principles, gestures and symbols conditioning legatine activities in this historical era became necessary pre-conditions to political communication, interaction and exchange. Their expression and representation, it is argued, help to explain the manifestation of Roman authority in distant Christian provinces, its varied meaning to contemporaries and the formative rules of political governance and diplomacy.

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McGrew, Kevin S., Robert H. Bruininks e Martha L. Thurlow. "Relationship between Measures of Adaptive Functioning and Community Adjustment for Adults with Mental Retardation". Exceptional Children 58, n. 6 (maggio 1992): 517–29. http://dx.doi.org/10.1177/001440299205800606.

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This study investigated the concurrent relations between measures of adaptive/maladaptive behavior and community adjustment in a sample of 239 adults with mild to severe degrees of mental retardation. Using canonical correlation procedures and multidimensional community adjustment measures, the investigators found significant relations between the measures of behavior and several community adjustment dimensions. The results provided evidence for the criterion-related validity of measures of adaptive/maladaptive behavior and suggested that such skills provide an important contribution to community adaptation and to program planning and decision making for individuals with mental retardation.

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González Diaz, Diego, Sergio Davis e Sergio Curilef. "Solving Equations of Motion by Using Monte Carlo Metropolis: Novel Method Via Random Paths Sampling and the Maximum Caliber Principle". Entropy 22, n. 9 (21 agosto 2020): 916. http://dx.doi.org/10.3390/e22090916.

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A permanent challenge in physics and other disciplines is to solve Euler–Lagrange equations. Thereby, a beneficial investigation is to continue searching for new procedures to perform this task. A novel Monte Carlo Metropolis framework is presented for solving the equations of motion in Lagrangian systems. The implementation lies in sampling the path space with a probability functional obtained by using the maximum caliber principle. Free particle and harmonic oscillator problems are numerically implemented by sampling the path space for a given action by using Monte Carlo simulations. The average path converges to the solution of the equation of motion from classical mechanics, analogously as a canonical system is sampled for a given energy by computing the average state, finding the least energy state. Thus, this procedure can be general enough to solve other differential equations in physics and a useful tool to calculate the time-dependent properties of dynamical systems in order to understand the non-equilibrium behavior of statistical mechanical systems.

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Prokešová, Michaela. "INHOMOGENEITY IN SPATIAL COX POINT PROCESSES – LOCATION DEPENDENT THINNING IS NOT THE ONLY OPTION". Image Analysis & Stereology 29, n. 3 (1 novembre 2010): 133. http://dx.doi.org/10.5566/ias.v29.p133-141.

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In the literature on point processes the by far most popular option for introducing inhomogeneity into a point process model is the location dependent thinning (resulting in a second-order intensity-reweighted stationary point process). This produces a very tractable model and there are several fast estimation procedures available. Nevertheless, this model dilutes the interaction (or the geometrical structure) of the original homogeneous model in a special way. When concerning the Markov point processes several alternative inhomogeneous models were suggested and investigated in the literature. But it is not so for the Cox point processes, the canonical models for clustered point patterns. In the contribution we discuss several other options how to define inhomogeneous Cox point process models that result in point patterns with different types of geometric structure. We further investigate the possible parameter estimation procedures for such models.

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Stoychev, Archbishop Sylvester. "The Issue of Recognition of Ordinations Performed in Schismatic Communities: Theological, Canonical, and Historical Aspects". Journal of Orthodox Christian Studies 6, n. 1 (2023): 37–55. http://dx.doi.org/10.1353/joc.2023.a923035.

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ABSTRACT: The proper procedures for receiving those ordained in schismatic ecclesiastical communities has become an especially important issue following the disputes over Ukrainian autocephaly and the Patriarchate of Constantinople's restoration of Ukrainian schismatics to hierarchical and priestly ranks. This article analyzes Patriarch Bartholomew's position on the reception of Ukrainian schismatic clergy and responses by Archbishop Anastasios of Albania. It sets this question against the historical backdrop of the church's reception of clergy ordained by schismatics, looking especially at the church's resolution to the Melitian schism. Following this brief historical survey, the article argues that the leniency displayed by Constantinople towards the Ukrainian schismatics deviates from the church's historical practices and has deepened the threat of schism within global Orthodoxy.

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Pasquariello, R., B. Fernandez-Fuertes, F. Strozzi, F. Pizzi, R. Mazza, P. Lonergan, F. Gandolfi e J. L. Williams. "Profiling bovine blastocyst microRNAs using deep sequencing". Reproduction, Fertility and Development 29, n. 8 (2017): 1545. http://dx.doi.org/10.1071/rd16110.

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MicroRNAs (miRNAs) are known to control several reproductive functions, including oocyte maturation, implantation and early embryonic development. Recent advances in deep sequencing have allowed the analysis of all miRNAs of a sample. However, when working with embryos, due to the low RNA content, miRNA profiling is challenging because of the relatively large amount of total RNA required for library preparation protocols. In the present study we compared three different procedures for RNA extraction and prepared libraries using pools of 30 bovine blastocysts. In total, 14 of the 15 most abundantly expressed miRNAs were common to all three procedures. Furthermore, using miRDeep discovery and annotation software (Max Delbrück Center), we identified 1363 miRNA sequences, of which bta-miR-10b and bta-miR-378 were the most abundant. Most of the 179 genes identified as experimentally validated (86.6%) or predicted targets (13.4%) were associated with cancer canonical pathways. We conclude that reliable analysis of bovine blastocyst miRNAs can be achieved using the procedures described herein. The repeatability of the results across different procedures and independent replicates, as well as their consistency with results obtained in other species, support the biological relevance of these miRNAs and of the gene pathways they modulate in early embryogenesis.

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Costa-Paiva, Elisa Maria, Paulo Cesar Paiva e Michelle Klautau. "Anaesthetization and fixation effects on the morphology of sabellid polychaetes (Annelida: Polychaeta: Sabellidae)". Journal of the Marine Biological Association of the United Kingdom 87, n. 5 (ottobre 2007): 1127–32. http://dx.doi.org/10.1017/s002531540705223x.

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One hundred and four specimens of Branchiomma luctuosum (Grube, 1870), a sabellid polychaete, were submitted to different anaesthetization and fixation procedures: a control group with living animals, immediate fixation with formaldehyde 4% (FO), ethanol 100% (AE) or ethanol 70% (ET), and anaesthetization with magnesium chloride (MC), refrigeration (RE), menthol crystals (ME) or freshwater (FW). Twenty-three morphometric variables of the body were measured and analysed with size-free multivariate statistics. The first three canonical variables explained 80% of the variation, being significantly correlated with 19 measured variables, mainly those related to the shape of the body setigers. Besides morphometric variables, some morphological characters commonly used in polychaete taxonomy also presented variation among fixation procedures, such as the release of parapodial elements and the integument. Among the procedures tested, AE, ET and FW were the best in approximating the shape of living specimens. Specimens submitted to FO and RE had shorter, wider, and thicker bodies, whereas those submitted to MC and ME were more elongated, narrower, flatter, and had wider pygidia than living specimens. Lengths of branchial crown, setiger 1 and pygidium seem to be the most informative morphometric characters for taxonomic purposes since they did not present deformation due to fixation procedures.

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Sen, Amartya. "How to Judge Voting Schemes". Journal of Economic Perspectives 9, n. 1 (1 febbraio 1995): 91–98. http://dx.doi.org/10.1257/jep.9.1.91.

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This symposium on voting procedures presents many interesting findings and insights. This note scrutinizes them and discusses two general issues. First, the assumption that voters’ preferences are menu-independent (and based on one canonical ordering of the alternatives) underestimates the importance of the process of voting (voting for x, against y). Second, evaluation can be a two-way process, including the axiomatic method (of social choice theory), going from isolated properties to voting schemes, and the converse method of first identifying attractions and perversities of particular voting schemes (as in this symposium) and then using properties for later axiomatic use.

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