2.1 Nos pacientes com DRC estágios III a V, os níveis ideais de PTH não são conhecidos. No entanto, sugerimos que os pacientes com níveis de PTH acima do limite superior de referência para o método sejam avaliados quanto à presença de hipocalcemia, hiperfosfatemia ou fração de excreção de P elevada, e deficiência de 25-hidroxivitamina D (25-vit D). Se forem detectadas alterações nesses parâmetr...

Structure-mapping theory has successfully predicted a number of empirical results concerning ordinary literal similarity processing. In particular, it predicts a distinction between alignable differences—those connected to the common structure derived in a comparison—and nonalignable differences, which are not so connected and which are held to be less salient than alignable differences (Markma...

Os Parques Nacionais do Brasil são áreas que possuem distintas funções, dentre elas, preservar a fauna e flora. As Áreas Protegidas (APs) ferramentas essenciais para manter integridade habitat diversidade de espécies ali ocorrem. O presente trabalho busca evidenciar importância dos conservação biomas brasileiros. Dessa maneira, procurou contribuir o aprofundamento desta temática evidenciando tr...

Classification of hyperspectral images is paramount to an increasing number of user applications. With the advent of more powerful technology, sensed images demand for larger requirements in computational and memory capabilities, which has led to devise compression techniques to alleviate the transmission and storage necessities. Classification of compressed images is addressed in this paper. C...

Université de Caen Basse Normandie LUSAC EA-2607, Groupe Vision et Analyse d'Images 120, route de l'exode, 50000 Saint-Lô, France Phone : +33 (0)2 33 77 55 11 Fax : +33 (0)2 33 77 11 67 E-mail: [email protected] Université Laval Département de génie électrique et de génie informatique Laboratoire de Vision et de Syst emes Numériques Pavillon Pouliot Quebec, QC, Canada, G1K 7P4 Phone: (...

Information hiding in JPEG2000 compressed images is investigated in this research. The challenges of covert communication in this state-of-the-art image codec are analyzed and a steganographic scheme is then proposed to reliably embed high-volume data into the JPEG2000 bitstream. A special mode of JPEG2000 is employed, and its usage and functions are explained and justified. Experimental result...

Scalable encoded information, as in the JPEG 2000 standard, results in files which can be truncated at an arbitrary point and decoded. This work introduces a tractable, yet flexible model appropriate for resource management involving scalably encoded information. At its core is a function yielding a measure of “quality” of the decoded information as a function of the number of bits chosen for d...

In this work, JPEG2000 error resilience options and error concealment strategies are discussed and evaluated. Error resilience options and error concealment strategies have been employed to mimic attacks against selective / partial JPEG2000 encryption schemes. Thus the security evaluation of these selective / partial encryption schemes relies on the proper working of the JPEG2000 error concealm...

This paper presents a new method for remote and interactive browsing of long video sequences. The solution is based on interactive navigation in a scalable mega image resulting from a JPEG2000 coded keyframe-based video summary. The presented system is compliant with the new JPEG2000 part 9 “JPIP – JPEG2000 Interactivity, API and Protocol,” which lends itself to working under varying channel co...