64-point Fourier transform chip for digital television applications

A 64-point Fourier transform chip is described that performs a forward or inverse, 64-point Fourier transform on complex two's complement data supplied at a rate of 13.5MHz and can operate at clock rates of up to 40MHz, under worst-case conditions. It uses a 0.6µm double-level metal CMOS technology, contains 535k transistors and uses an internal 3.3V power supply. It has an area of 7.8×8mm, dissipates 0.9W, has 48 pins and is housed in a 84 pin PLCC plastic package. The chip is based on a FFT architecture developed from first principles through a detailed investigation of the structure of the relevant DFT matrix and through mapping repetitive blocks within this matrix onto a regular silicon structure.

A 64-point fourier transform chip for video motion compensation using phase correlation

Details of a new low power fast Fourier transform (FFT) processor for use in digital television applications are presented. This has been fabricated using a 0.6-µm CMOS technology and can perform a 64 point complex forward or inverse FFT on real-time video at up to 18 Megasamples per second. It comprises 0.5 million transistors in a die area of 7.8 × 8 mm and dissipates 1 W. The chip design is based on a novel VLSI architecture which has been derived from a first principles factorization of the discrete Fourier transform (DFT) matrix and tailored to a direct silicon implementation.

A study on the encryption algorithm for RFID tag (SEED : 8 Rounds × 64 bits block)

Although it is always weak between RFID Tag and Terminal in focus of the security, there are no security skills in RFID Tag. Recently there are a lot of studying in order to protect it, but because it has some physical limitation of RFID, that is it should be low electric power and high speed, it is impossible to protect with the skills. At present, the methods of RFID security are using a security server, a security policy and security. One of them the most famous skill is the security module, then they has an authentication skill and an encryption skill. In this paper, we designed and implemented after modification original SEED into 8 Round and 64 bits for Tag.

A Intenção de uso da M-Wallet pelo consumidor português

Dissertação de Mestrado apresentada ao Instituto de Contabilidade e Administração do Porto para a obtenção do grau de Mestre em Marketing Digital, sob orientação de Mestre António da Silva Vieira.

Unesp Ciência, 2015, ano 6, número 64

Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP

Las comunidades benticas entre los 03º y 09º S en mayo de 1995 (Cr. BIC SNP-1, 9505-06)

Estudio de la estructura de las comunidades bentónicas sublitorales de fondo blando mediante el análisis de 11 muestras de draga colectadas entre los 03°38 ' y 09°16 'S, entre el 12 y 19 de mayo de 1995. Se determinó la biodiversidad a nivel de especies de macrobentos para las subáreas A, B, C, D. Se evaluó el nivel de similaridad entre las 11 estaciones analizadas a nivel de grupos taxonómicos (Polychaeta, Crustacea, Mollusca, Nemertinea y otros), así como la relación entre el nivel de estrés de las comunidades de las subáreas latitudinales A, B, C, D y la agremiación en el grupo dominante (Polychaeta). Fueron diferenciadas un total de 73 especies macrobénticas de las cuales el 64,38% pertenece a la clase Polychaeta. El patrón de distribución de las biomasas totales del macrobentos es más simple que el de las abundancias, con una tendencia a la ubicación de los valores máximos al norte de los 04° S. Se comprueba una relación inversa entre el grado de agremiación y el nivel de estrés medido con el índice SEP.

Endoscopic and surgical treatment of vesico-ureteral reflux in children. Comparative long-term follow-up.

PRINCIPLES: This retrospective study analyzes the long-term results of endoscopic and surgical treatment of vesico-ureteral reflux in children. METHODS: A cohort of 130 patients, 67 girls and 63 boys with a mean age of 30 months were treated either by endoscopic subureteral collagen injection (SCIN) in 92 and by Cohen reimplantation surgery in 123 refluxing ureteral units. Mean follow-up was 4.2 years varying from 1 to 8.7 years. Reflux recurrence, urinary tract infection (UTI) and renal function were evaluated. RESULTS: After SCIN reflux was absent in 64% at 6 months. 20% of the initially 92 refluxing ureters were injected twice. After one or two injections reflux was absent in 71%. In 21% recurrent reflux was of grade I or II, not requiring further treatment. UTI was observed in 27%. After Cohen ureteral reimplantation reflux was absent in 96% at 6 months. UTI was observed in 23%. Renal function at diagnosis and follow-up was compared in children with bilateral grade III reflux only. In patients treated with SCIN it was normal in 77% preoperatively and in 90% at follow-up. In patients treated by open surgery it was normal in 47% preoperatively and in 76% at follow-up. CONCLUSION: For high-grade vesico-ureteral reflux re-implantation surgery remains the gold standard. SCIN is indicated for low and medium grade reflux. Recurrent bacteriuria was observed more often after SCIN and pyelonephritis more often after open surgery. The renal function seems to be preserved with both techniques.

Couplets à l'occasion de la construction des Bâtimens et jardins de Bagatelle, ordonnés par Monseigneur le Comte d'Artois et exécutés par Belanger son premier architecte en 64 jours. Ce qui fit donner le nom de Bagatelle à ce lieu de plaisance (manuscrit autographe)

Pièce en vers. - Par M. D. d. L. T.

Le Livre des cent ballades [par JEAN DE WERCHIN, PHILIPPE D'ARTOIS, JEAN BOUCICAUT et JEAN DE CRESEQUES], avec les réponses de « REGNAUT DE TRIE » (fol. 60), « CHAMBRILLART » (fol. 61), « monseigneur DE TOURAINE », « LYONET DE COISMES » (fol. 62), « monseigneur DE BERRY » (fol. 63), « JAQUET D'ORLIENS », « TIGNONVILLE » (fol. 64), « JEHAIN DE MALLY » (fol. 65), « YVRY », « BERTHICOURT » (fol. 66), « monseigneur DE LA TRIMOULLE » (fol. 67).

Commençant par : « Une fois pieça chevauchoie Entre Pont de Cé et Angiers... » et finissant par : « Tant seulement doit en son cuer choisir En ciel un Dieu, en terre une deesse » .

Coislin 352

PHILARAS (Léonard). poésies grecques et latines