Now showing items 1-8 of 8
An effective wavelet method to detect and mitigate low-frequency multipath effects
(International Association of Geodesy Symposia, 2008-12-01) [Trabalho apresentado em evento]
To ensure high accuracy results from GPS relative positioning, the multipath effects have to be mitigated. Although the careful selection of antenna site and the use of especial antennas and receivers can minimize multipath, ...
Concerning the stability of BDF methods
(AIP Conference Proceedings, 2008-10-22) [Trabalho apresentado em evento]
We present an analysis of A0-stability of BDF methods and proof that zero-stable BDF methods are A0-stable using the Schur-Cohn criterion. With this result we have that zero-stable BDF methods are stiffly-stable. © 2008 ...
Spectral analysis and low-frequency multipath mitigation for kinematic applications
(Record - IEEE PLANS, Position Location and Navigation Symposium, 2008-11-10) [Trabalho apresentado em evento]
Low-frequency multipath is still one of the major challenges for high precision GPS relative positioning. In kinematic applications, mainly, due to geometry changes, the low-frequency multipath is difficult to be removed ...
Evaluating genetic algorithms with different population structures on a lot sizing and scheduling problem
(Proceedings of the ACM Symposium on Applied Computing, 2008-12-01) [Trabalho apresentado em evento]
This paper studies the use of different population structures in a Genetic Algorithm (GA) applied to lot sizing and scheduling problems. The population approaches are divided into two types: single-population and ...
Meta-heuristic approaches for a soft drink industry problem
(IEEE Symposium on Emerging Technologies and Factory Automation, ETFA, 2008-11-24) [Trabalho apresentado em evento]
The present paper evaluates meta-heuristic approaches to solve a soft drink industry problem. This problem is motivated by a real situation found in soft drink companies, where the lot sizing and scheduling of raw materials ...
Use of ICT and project work in teacher training at the public school system
(Computers and Education: Towards Educational Change and Innovation, 2008-01-01) [Trabalho apresentado em evento]
Ultrafast reflectivity dynamics in bis (n-butylimido) perylene thin films
(2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS, 2008-09-15) [Trabalho apresentado em evento]
Using pump-probe reflectometry, we study the ultrafast excited-state dynamics in thin films of BuPTCD, an organic semiconductor, deposited on gold nanoparticles. We observe depletion of the ground state and excited state ...
Development of an amperometric sensor for potassium ions
(Biodevices 2008: Proceedings of The First International Conference on Biomedical Electronics and Devices, Vol 1, 2008-01-01) [Trabalho apresentado em evento]
Hollandite-type manganese oxides are nanofibrous crystals with sub-nanometer open tunnels that provide a unique property for sensing applications. Sensor based on hollandite-type manganese oxide was investigated for ...