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The left and right roll-off regions are asymmetric; nevertheless the Q-constant analysis philosophy is maintained. This article has multiple issues. Retrieved 30 December In this thesis, some recent results obtained in the area of error correcting codes, related to soft decision decoding techniques, are presented and analyzed.

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h.m. de oliveira, Universidade Federal de Pernambuco, Departamento de Estatística Department, Faculty Member. Studies Applied Statistics, Applied Mathematics and Statistics, and Fourier and Wavelet Processing. Hélio Magalhães de Oliveira was born in.
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Voice excerpts containing more than one syllable and identified by the same envelope are named as super-syllables and they are subsequently separated. This algorithm is also useful in voice command systems, as a tool in the teaching of Portuguese language or even for patients with speech pathology. A new Hyperspherical trigonometry based on Quaternion's Algebra is introduced. Spatial curves on the surface of the unit-quaternion hypersphere are described in the parametric form.

A draft of a new Continuous Quaternion Modulation System A draft of a new Continuous Quaternion Modulation System is presented, in which two modulation signals are used to drive paths in the normalized 4D-hypersphere.

The outline of a PLL-based demodulation is also sketched. Campello de Souza Publication Date: The approach mixes techniques of signal, audio and image processing and it is divided into five stages, namely: The color human visual response is driven by specialized cells called cones, which exist in three types, viz.

R, G, and B. Software is developed to simulate how color images are displayed for different types of color blindness. Specified the default color deficiency associated with a user, it generates a preview of the rainbow in the visible range, from red to violet and shows up, side by side with a colorful image provided as input, the display correspondent colorblind.

The idea is to provide an image processing after image acquisition to enable a better perception of colors by the color blind. Examples of pseudo-correction are shown for the case of Protanopia red blindness.

The system is adapted into a screen of an i-pad or a cellphone in which the colorblind observe the camera, the image processed with color detail previously imperceptible by his naked eye.

As prospecting, wearable computer glasses could be manufactured to provide a corrected image playback. The approach can also provide augmented reality for human vision by adding the UV or IR responses as a new feature of Google Glass. Oct Publication Name: Of Protein Size and Genomes more. An approach for approximately calculating the number of genes in a genome is presented, which takes into account the average protein length expected for the species. A number of virus, bacterial and eukaryotic genomes are scrutinized A number of virus, bacterial and eukaryotic genomes are scrutinized.

Genome figures are presented, which support the average protein size of a species as a criterion for assessing life complexity. It is shown that storing all genes of a single human definitely requires less than 12 MB. Jan 1, Publication Name: Digital Transforms have important applications on subjects such as channel coding, cryptography and digital signal processing.

This paper presents a novel adaptive-filter approach for predicting assets on the stock markets. Concepts are introduced here, which allow understanding this method and computing of the corresponding forecast.

This approach is applied, as The first-rate choices of the window length and the number of filter coefficient are evaluated.

This is done by observing the correlation between the predictor signal and the actual course performed by the market in terms of both the window prediction length and filter coefficient values. It is shown that such adaptive predictors furnish, on the average, very substantial profit on the invested amount.

Aug 15, Publication Name: Amazonas, Brazil Publication Date: This paper presents a novel approach for deciding on the appropriateness or not of an acquired fingerprint image into a given database.

The process begins with the assembly of a training base in an image space constructed by combining The process begins with the assembly of a training base in an image space constructed by combining Principal Component Analysis PCA and edge detection. Then, the parameter value H — a new feature that helps in the decision making about the relevance of a fingerprint image in databases — is derived from a relationship between Euclidean and Mahalanobian distances.

This procedure ends with the lifting of the curve of the Receiver Operating Characteristic ROC , where the thresholds defined on the parameter H are chosen according to the acceptable rates of false positives and false negatives. It is shown how binary sequences can be associated with automatic composition of monophonic pieces. We are concerned with the composition of e-music from finite field structures. The information at the input may be either random or The information at the input may be either random or information from a black-and-white, grayscale or color picture.

New e-compositions and music score are made available, including a new piece from the famous Lenna picture: Further, multilevel block-codes are also used in a new approach of e-music composition, engendering a particular style as an " e-composer. Coupling capacitor voltage transformers CCVT are widely used in power systems and the failure of this equipment may result unexpected outages of transmission lines TL. This study shows that switching-off shunt reactor compensated TL This study shows that switching-off shunt reactor compensated TL may lead to sustained voltage amplification in the secondary of the CCVT, the product of a transient interaction between the TL and CCVT, which causes thermal and dielectric stress to its components.

This interaction is chiefly influenced by the design of the CCVT and the TL-compensation degree, as assessed by means of frequency response mappings, measurements of several parameters of different designs of CCVT, and computer simulations. Our idea is based on a quantifier of information fluctuation of a source, F U , Our idea is based on a quantifier of information fluctuation of a source, F U , which corresponds to the second central moment of the random variable that measures the information content of a source symbol.

An alternative interpretation of typical sequences is additionally provided through this approach. A Circular Data Windowing more. Continuous standard windowing is revisited and a new taper shape is introduced, which is based on the normal circular distribution by von Mises. Continuous-time windows are considered and their spectra obtained. A brief comparison with A brief comparison with classical window families is performed in terms of their spectral properties.

These windows can be used as an alternative in spectral analysis. Oliveira , and Ronaldo Ramalho. This paper assesses the performance of mobile messaging and VoIP connections. This analysis also enabled a comparison of the performance of these applications on This analysis also enabled a comparison of the performance of these applications on two Android operating system OS versions: Two models of smartphones were considered, viz.

Galaxy Note 4 and Galaxy S4. The applications behavior was statistically investigated for both sending and receiving VoIP calls. Connections have been examined over 3G and WiFi. The handset model plays a decisive role in CPU usage of the application. Galaxy Note 4 using WiFi always outperformed S4 in terms of processing efficiency. Mar 3, Journal Name: Global Journal of Computer Science and Technology: A Hardware and Computation Organization: A Kotel'nikov Representation for Wavelets more.

Details of how to obtain the processes of envelope and phase at low frequency are shown. The archetypal interpretation of wavelets as The archetypal interpretation of wavelets as an analysis with a filter bank of constant quality factor is revisited on these bases.

Nevertheless, in cases of orthogonal wavelets whose spectrum does not verify this condition, it is shown how to construct an " equivalent " filter bank with no spectral overlapping.

Spherical Harmonic Wavelets more. These wavelets, termed spherical harmonic or Legendre wavelets, possess compact support. The method for the wavelet construction is derived from the The method for the wavelet construction is derived from the association of ordinary second order differential equations with multiresolution filters.

The low-pass filter associated to Legendre multiresolution analysis is a linear phase finite impulse response filter FIR. This paper presents a new topology for photonic crystals to replace the monochromator, introducing them with a new alignment the so-called extended Trinitron to guide the chromatic pattern producing a spatial distribution similar to This paper presents a new topology for photonic crystals to replace the monochromator, introducing them with a new alignment the so-called extended Trinitron to guide the chromatic pattern producing a spatial distribution similar to that of conventional diffraction gratings.

The spectrophotometer uses a LED white light as light source instead of cameras with halogen lamps and mirrors. The system was designed using actual data from the manufacturer of photonic crystals and the total system response is compared against that one of a conventional spectrophotometer with a LED white light or tungsten bulb as a light source.

It is shown that the spectral responses are similar in photonic panels containing more than twenty elements. Optical Systems and Modern Optoelectronic Instruments. Photonics , Spectrophotometry , and Uv Vis and Nir spectrophotometer. In terms of multiplicative complexity, both algorithms are more efficient, in In terms of multiplicative complexity, both algorithms are more efficient, in general, than the well known Goertzel Algorithm.

No período, fui homenageado por 49 turmas distintas de formandos em Engenharia. Talvez tenha algum significado, lembrando Abraham Lincoln Talvez tenha algum significado, lembrando Abraham Lincoln American 16th US President , You may fool all the people some of the time, you can even fool some of the people all of the time, but you cannot fool all of the people all the time. Teacher Education and Higher Education. New number-theoretic transforms are derived from known linear block codes over finite fields.

In particular, two new such transforms are built from perfect codes, namely the Hamming number-theoretic transform and the Golay In particular, two new such transforms are built from perfect codes, namely the Hamming number-theoretic transform and the Golay number-theoretic transform.

A few properties of these new transforms are presented. Um projeto de sonar na A sonar project in the audio range and simulation was carried out to assess the performance of these techniques. Transformadas Digitais e Códigos de Bloco: Aqui, mostramos que novas transformadas digitais podem ser derivadas a partir de códigos corretores de erros.

Telecommunications Engineering , Number Theory , Telecommunications , Error control and Coding theory , Blaise Pascal , and 4 more Error correcting codes , Pascal triangle , Finite Fields , and number-theoretic transforms Error correcting codes , Pascal triangle , Finite Fields , and number-theoretic transforms. Brazilian Journal of ….

A New Digital Modulation more. This note introduces the preliminary ideas of a new digital modulation scheme termed Wavelet Shift Keying WSK , which is based on discrete wavelet transforms. The source bit stream is translated into a sequence of scales indicating which The source bit stream is translated into a sequence of scales indicating which version of the mother wavelet should be transmitted in each symbol slot.

The modulated signal therefore consists in a sequence of overlapping or non-overlapping scaled-translated versions of a wavelet. Such schemes can be viewed as a generalisation of "wavelet-based OFDM systems".

Simple examples of deO-modulation and Mexican hat modulation are presented. Anais do XX Simpósio Bras. The transfer function of both the detail and The transfer function of both the detail and the smoothing filter is related to the solution of a Mathieu equation of the odd characteristic exponent. The number of notches of these filters can be easily designed. Wavelets derived by this method have potential application in the fields of optics and electromagnetism.

Shannon and Renyi Entropy of Wavelets more. This paper reports a new reading for wavelets, which is based on the classical 'De Broglie' principle. The wave-particle duality principle is adapted to wavelets. Every continuous basic wavelet is associated with a proper probability Every continuous basic wavelet is associated with a proper probability density, allowing defining the Shannon entropy of a wavelet.

Further entropy definitions are considered, such as Jumarie or Renyi entropy of wavelets. We proved that any wavelet of the same family has the same Shannon entropy of its mother wavelet. Finally, the Shannon entropy for a few standard wavelet families is determined. A Painless Tutorial on Midi Format more. A short overview demystifying the midi audio format is presented. The goal is to explain the file structure and how the instructions are used to produce a music signal, both in the case of monophonic signals as for polyphonic signals.

Feb Publication Name: A trigonometry for finite fields is introduced. In particular, the k-trigonometric functions over the Galois field GF q are defined and their main properties derived. This leads to the definition of the cas k.

The FFHT presented here is different from an earlier version and seems to be the more natural one. Development of a Hierarquical Classification Algorithm Winclus and its application to a indolecarboxylate series more.

The Cluster Analysis is a type of pattern recognition applicable to the drug design. In this paper, we present an agglomerative classification model in order to group substituents on the basis of similarities of their physical and In this paper, we present an agglomerative classification model in order to group substituents on the basis of similarities of their physical and chemical parameters.

Once grouped, we investigate the relationship between the hierarchical model and the biological responses of compounds from the Quantitative Structure-Activity Relationship QSAR. The method is then implemented by a new algorithm, called Winclus, for which we developed a dedicated software. The study was seeking to establish a relationship between groups of substituents derived from the proposed model and the biological activities of compounds already synthesized.

To this end, we used the graphical form of dendrogram and offered the developed program as a tool in the design of new biologically active compounds. The eigenstructure of the discrete Fourier transform DFT is examined and new systematic procedures to generate eigenvectors of the unitary DFT are proposed.

DFT eigenvectors are suggested as user signatures for data communication over DFT eigenvectors are suggested as user signatures for data communication over the real adder channel RAC. The proposed multiuser communication system over the 2-user RAC is detailed. Algorithms and Discrete Mathematics.

This paper presents a preliminary investigation on the use of the wavelet theory for fault location in transmission lines. Faults were simulated in a kV transmission line, with the acquisition of the single phases of voltages and A new methodology is showed considering three-level decomposition of fault signals by sub-band coding and the apparent impedance technique.

Sep Publication Name: This approach is then used to derive a new family of orthogonal complex wavelets based on the Nyquist criterion for Inter-symbolic This approach is then used to derive a new family of orthogonal complex wavelets based on the Nyquist criterion for Inter-symbolic Interference ISI elimination. The pass-band behaviour of the wavelet Fourier spectrum is examined.

The left and right roll-off regions are asymmetric; nevertheless the Q-constant analysis philosophy is maintained. A generalisation of the square root raised cosine wavelets is proposed. Finally, a computational implementation of such wavelets on Matlab TM is presented as well as a few applications. Journal of Communication and Information Systems,. In this note we introduce a new family of wavelets, named Chebyshev wavelets, which are derwavelived from conventional Chebyshev polynomials.

Properties of Chebyshev filter banks are investigated, including orthogonality and perfect Properties of Chebyshev filter banks are investigated, including orthogonality and perfect reconstruction conditions. Chebyshev wavelets of 2nd kind have compact support, their filters possess good selectivity, but they are not orthogonal. The convergence into 2nd kind Chebyshev wavelets via the cascade algorithm is proved by using Markov chains theorems.

Computational implementation of these wavelets and some clear-cut applications are presented. These wavelets are offered as a choice in wavelet analysis. Rio de Janeiro More Info: Close Approximations for Daublets and their Spectra more. Although being continuous wavelets, analytical formulation are lacking for such wavelets.

Close approximations for daublets Daubechies wavelets Close approximations for daublets Daubechies wavelets and their spectra are introduced here. The frequency detection properties of daublets are investigated through scalograms derived from these new analytical expressions.

These near-daublets have been implemented on the MatlabTM wavelet toolbox and a few scalograms presented. This approach can be valuable for wavelet synthesis from hardware or for application involving continuous wavelet-based systems, such as wavelet- OFDM.

Converting EEG and other paper legated biomedical maps into digital signals more. This software-based approach is particularly helpful for digitalizing biomedical signals acquired from analogical devices equipped with a plottingter.

The prize is established to support young designers with the beginning of their career. Donated garments will be processed by I: CO, a retailer that repurposes and recycles used clothing with the goal of creating a zero-waste economy. From Wikipedia, the free encyclopedia. This article is about the fashion chain. This article has multiple issues. Please help improve it or discuss these issues on the talk page. Learn how and when to remove these template messages.

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Please help improve it by replacing them with more appropriate citations to reliable, independent, third-party sources. Sweden portal Companies portal Fashion portal. Archived from the original on 15 September Archived from the original on 19 March Retrieved 10 April Archived from the original on 12 February Retrieved 15 February Archived from the original PDF on 20 August Archived from the original PDF on 6 June Retrieved 30 December Operating profit amounted to SEK 22, m 21, Archived from the original on 30 September Archived from the original on 1 October Retrieved 30 May Archived from the original on 18 December Retrieved 25 December Archived from the original on 20 June Retrieved 17 June Retrieved 21 June Archived from the original on 5 May Retrieved 3 March Retrieved 23 February Retrieved — via BBC.

Retrieved July 1, Archived from the original on 7 February Archived from the original on 2 May Retrieved 2 February Retrieved 1 April Retrieved 8 November Retrieved 28 November The Clean Clothes Campaign. Retrieved 23 October Honour your commitments to protect garment workers in Bangladesh".

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