Constrained Platforms
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Algoritmos de autenticação de mensagens para redes de sensores. / Message authentication algorithms for wireless sensor networks.
Security is an important concern in any modern network. However, networks that are highly dependent on constrained devices (such as sensors, tokens and smart cards) impose a difficult challenge: their reduced availability of memory, processing power and (specially) energy hinders the deployment of many modern cryptographic algorithms known to be secure. This
Publicado em: 2010
-
2. Cryptographic algorithms for sensor networks. / Algoritmos criptográficos para redes de sensores.
The need for security is a great concern in any modern network. However, networks that are highly dependent of constrained devices (such as sensors, tokens and smart cards) impose a difficult challenge: their reduced availability of memory, processing power and (more importantly) energy hinders the deployment of many important cryptographic algorithms known
Publicado em: 2008
-
3. GPGPU based image segmentation livewire algorithm implementation.
This thesis presents a Graphic Processing Unit (GPU) implementation of the Livewire algorithm, instead of using traditional architectures, like the CPU. The GPU is a Single Instruction Multiple Data (SIMD) architecture. The algorithm is divided in three phases: Sobel or Laplacian filter convolution, image modeling as a grid graph and solving the non-negative
Publicado em: 2007
-
4. LINDAX: UMA LINGUAGEM DE DESCRIÇÃO DE SISTEMAS DE COMUNICAÇÃO ADAPTÁVEIS / LINDAX.: A LANGUAGE FOR DESCRIBING ADAPTABLE COMMUNICATION SYSTEMS
It is increasingly noticeable, in the current telecommunications market, a trend towards using communication systems that allow rapid and cheap deployment of new services. In pursuit of network architectures that keep up with such trend, significant research has been carried out on programmable networks. This field is set to gain further impetus from develop
Publicado em: 2005
-
5. Functional cavitands: Chemical reactivity in structured environments
Container-shaped molecules provide structured environments that impart geometric bounds on the motions and conformations of smaller molecular occupants. Moreover, they provide “solvation” that is constrained in time and space. When inwardly directed functional groups are present, they can interact chemically with the occupants. Additionally, the potentia
National Academy of Sciences.