Read the latest magazines about Petronio and discover magazines on Yumpu. com. Share. Álgebra Linear e suas Aplicações: Notas de Aula – Petronio Pulino . cap01; Universidade Cruzeiro do Sul – UNICSUL; PROJETOS – Fall ; Algebra Linear e suas Aplicaco es Notas de Aula Petronio Pulino 1 3 4 3 1 0. algebra linear suas aplica¸c˜ oes notas de aula petronio pulino qt pulinus sq algebra linear suas aplica¸c˜ oes notas de aula petronio pulino departamento de.

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Generalized inverses theory and computations. This book begins with the fundamentals of the generalized inverses, then moves to more advanced topics.

It presents a theoretical study of the generalization of Cramer’s rule, determinant representations of the generalized inverses, reverse order law of the generalized inverses of a matrix product, structures of the generalized inverses of structured matrices, parallel computation of the generalized inverses, perturbation analysis of the generalized inverses, an algorithmic study of the computational methods for the full-rank factorization of a generalized inverse, generalized singular value decomposition, imbedding method, finite method, generalized inverses of polynomial matrices, and generalized inverses of linear operators.

This book is intended for researchers, postdocs, and graduate students in the area of the generalized inverses with an undergraduate-level understanding of linear algebra. Algebraic computing in general relativity. The purpose of this paper is to bring to the attention of potential users the existence of algebraic computing systems, and to illustrate their use by reviewing petronoi number of problems for which such a system has been successfully used in General Relativity.

In addition, some remarks are included which may be of help in the future design of these systems. Computer methods in general relativity: Specifically, we have written an algorithm for determining the isometry group of a spacetime in four dimensionsand partially implemented this algorithm using the symbolic manipulation package CLASSI, which is an extension of SHEEP.

Hybrid computing – Generalities and bibliography. This note presents the content of a research thesis. It describes the evolution of hybrid computing systems, discusses the benefits and shortcomings of analogue or hybrid systems, discusses the building up of an hybrid system requires propertiescomments different possible uses, addresses the issues of language and programming, discusses analysis methods and scopes of application.

An appendix proposes a bibliography on these issues and notably the different scopes of application simulation, fluid dynamics, biology, chemistry, electronics, energy, errors, space, programming languages, hardware, mechanics, and optimisation of equations or processes, physics [fr. General purpose computers in real time. I see three main trends in the use of general purpose computers in real time. The first is more processing power.

The second is the use of higher speed interconnects between computers allowing more data to be delivered to the processors. The third is the use of larger programs running in the computers.

Although there is still work that needs to be done, I believe that all indications are that the online need for general purpose computers should be available for the SCC and LHC machines. In this article, we propose a general principle of quantum interference for quantum system, and based on this we pulimo a new type of computing machine, the duality computerthat may outperform in algebrw both classical computer and the quantum computer.

According to the general principle of quantum interference, the very essence of quantum interference is the interference of the sub-waves of the quantum system itself. A quantum system considered here can be any quantum system: In the duality computerthe wave of the duality computer is split algrbra several sub-waves and they pass through different routes, where different computing gate operations are performed.

These sub-waves are then re-combined to interfere to give the computational results. The quantum computerhowever, aogebra only used the particle nature of quantum object. In a duality computerit may be possible to find a marked item from an unsorted database using only a single query, and all NP-complete problems may have polynomial algorithms. Two proof-of-the-principle designs of the duality computer are presented: We also propose thought experiment to check the related fundamental issues, the measurement efficiency of a partial wave function.

Spectroscopic Signatures and Structural Motifs of Dopamine: Dopamine DA is an essential neurotransmitter in the central nervous system and it plays integral role in numerous brain functions including behaviour, cognition, emotion, working memory and associated learning. Twenty lowest energy structures of neutral DA were subjected to geometry optimization and the gauche conformer, GIa, was found to be the lowest gas phase structure at the each level of petronuo in agreement with the experimental rotational spectroscopy.


Computer use changes generalization of movement learning. Over the past few decades, one of the most salient lifestyle changes for us has been the use of computers. For many of us, manual interaction with a computer occupies a large portion of our working time. Through neural plasticity, this extensive movement training should change our representation of movements e. However, how computer use affects motor learning is largely understudied.

Additionally, as virtually all participants in studies of perception and actions are computer users, a legitimate question is whether insights from these studies bear the signature of computer -use experience. We compared non- computer users with age- and education-matched computer users in standard motor learning experiments.

We found that people learned equally fast but that non- computer users generalized significantly less across space, a difference negated by two weeks of intensive computer training.

Our findings suggest that computer -use experience shaped our basic sensorimotor behaviors, and this influence should be considered whenever computer users are recruited as study participants. Guidelines for computer security in general practice.

As general practice becomes increasingly computerised, data security becomes increasingly important for both patient health and the efficient operation of the practice.

To develop guidelines for computer security in general practice based on a literature petronjo, an analysis of available information on current practice and a series of key stakeholder interviews. While the guideline was produced in lineat context of Australian general practice, we have developed a template that is also relevant for other countries. Current data on computer security measures was sought from Australian divisions of general practice. Semi-structured interviews were conducted with general practitioners GPsthe medical software industry, senior managers within government responsible for health IT information technology initiatives, technical IT ;ulino, divisions of general practice and a member of a health information consumer group.

The respondents were asked to assess both the likelihood and the consequences of potential risks in computer security being breached. The study suggested that the most important computer security issues in general practice were: This information led to the production of computer security guidelines, including a one-page summary checklist, which were subsequently distributed to all GPs in Australia.

This paper maps out a process for alggebra computer security guidelines for general practice. The specific content will vary in different countries according to their levels of adoption of IT, and cultural, technical and other health service factors. Stable computation of generalized singular pehronio.

We study floating-point computation of the generalized singular value decomposition GSVD of a general matrix pair A, Bwhere A and B are real matrices with the same numbers of columns. The GSVD is a powerful analytical and computational tool. Our goal is to develop stable numerical algorithms for the GSVD that are capable of prtronio the singular libear approximations with the high relative accuracy that the perturbation theory says is possible.

We linesr that the singular values are well-determined by the data, i. Directory of Open Access Journals Sweden. Conclusions Letronio paper maps out a process for developing computer security guidelines for general practice. Making these guidelines relevant to local contexts should help maximise their uptake. Terahertz spectroscopic polarimetry of generalized anisotropic media composed of Archimedean spiral arrays: Terahertz time-domain spectroscopic polarimetry has been used to measure the polarization state of all spectral components in a broadband THz pulse upon transmission through generalized anisotropic media consisting of two-dimensional arrays of lithographically defined Archimedean spirals.

The technique allows a full determination of the frequency-dependent, complex-valued transmission matrix and eigenpolarizations of the spiral arrays. Measurements were made on a series of spiral array orientations. The frequency-dependent transmission matrix elements as well as the eigenpolarizations were determined, and the eigenpolarizations were found be to elliptically corotating, as expected from their symmetry.

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Numerical simulations are in quantitative agreement with measured spectra. Generalized Bell-inequality experiments and computation. We consider general settings of Bell inequality experiments with many parties, where each party chooses from a finite number of measurement settings each with a finite number of outcomes.

We investigate the constraints that Bell inequalities place upon the correlations possible in local hidden variable theories using a geometrical picture of correlations. We show that local hidden variable theories can be characterized in terms of limited computational expressiveness, which allows us to characterize families of Bell inequalities.


The limited computational expressiveness for many settings each with many outcomes generalizes previous results about the many-party situation each with a choice of two possible measurements each with two outcomes.

Using this computational picture we present generalizations of the Popescu-Rohrlich nonlocal box for many parties and nonbinary inputs and outputs at each site.

slgebra Finally, we comment on the effect of preprocessing on measurement data in our generalized setting and show that it becomes problematic outside of the binary setting, in that it allows local hidden variable theories to simulate maximally nonlocal correlations such as those of these generalized Popescu-Rohrlich nonlocal boxes.

Mg co-ordination with potential carcinogenic molecule acrylamide: Spectroscopiccomputational and cytotoxicity studies. Singh, Ranjana; Mishra, Vijay K.

Acrylamide acr is a potential toxic molecule produced in thermally processed food stuff. Acr-Mg complex has been synthesized chemically and characterized by spectroscopic techniques. The petronii sites of acr with Mg were identified by experimental and computational methods. Both experimental and theoretical results suggest that Mg coordinated with the oxygen atom of Cdbnd O group of acr. In-vitro oinear studies revealed significant decrease in the toxic level of acr-Mg complex as compared to pure acr.

The decrease in toxicity on complexation with Mg may be a useful step for future research to reduce the toxicity of acr.

Numerical computation of generalized importance functions. Thus far, an important effort has been devoted to developing and applying generalized perturbation theory in reactor physics analysis.

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In this work we are interested in the calculation of the importance functions by the method of A. We have noted that in this method the convergence of the iterative procedure adopted is not rapid. Hence to accelerate this convergence we have used the semi-iterative technique. The advantage of our calculation was confirmed by some comparative tests in which the iteration number and the computing time were highly reduced with respect to classical calculation CIAP-1D and CIAP-2D.

Included are subroutines for definition of areas and axes of plots; setup and display of text; blanking of areas; setup of style, interpolation, and plotting of lines; control of patterns and of shading of colors; control of legends, blocks of text, and characters; initialization of devices; and setting of mixed alphabets.

The astronomical emission features, formerly known as the unidentified infrared bands, are now commonly ascribed to polycyclic aromatic hydrocarbons PAHs.

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These data are now available on the World Wide Web at www. This paper presents an overview of the computational spectra in the database and the tools developed to analyze and interpret astronomical spectra using the database. A description of the online and offline user tools available on the Web site is also presented. General purpose computers expense. This account shall include the costs of personnel whose principal job is the physical operation of general purpose computers and the maintenance of operating systems.

Understanding reactivity of two newly synthetized imidazole derivatives by spectroscopic characterization and computational study. Two newly synthetized imidazole derivatives 1- 4-methoxyphenyl -4,5-dimethyl-1H-imidazoleyl acetate MPDIA and 1- 4-bromophenyl -4,5-dimethyl-1H-imidazoleyl acetate BPDIA have been prepared by solvent-free synthesis pathway and their specific spectroscopic and reactive properties have been discussed based on combined experimental and computational approaches.

All of the aforementioned spectra were also obtained computationallywithin the framework of density functional theory DFT approach. Additionally, DFT calculations have been used in order to investigate local reactivity properties based on molecular orbital theory, molecular electrostatic potential MEPaverage local ionization energy ALIEFukui functions and bond dissociation energy BDE.

Molecular dynamics MD simulations have been used in order to obtain radial distribution functions RDFwhich were used for identification of the atoms with pronounced interactions with water molecules.