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Teacher and Learner Perceptions of Language-Learning Problem AreasTeacher and Learner Perceptions of Language-Learning Problem Areas
(Escuela de Lenguas Modernas, Universidad de Costa Rica, 2009)
The effect of actuator and sensor placement on the active control of rotor unbalance
(2003-07-01)
This paper investigates both theoretically and experimentally the effect of the location and number of sensors and magnetic bearing actuators on both global and local vibration reduction along a rotor using a feedforward ...
Medication errors in a Spanish community pharmacy: nature, frequency and potential causes
Background Medication safety has long been recognized as a key issue within the broader patient safety agenda. Errors can occur at any step along the way, from prescribing to the ultimate provision of the drug to the ...
Performance enhancement in OFDM systems with ICI utilizing the improved double jump linear combination pulse
(IEE, 2017)
It is well-know that carrier frequency offset in the subcarriers of orthogonal frequency division multiplexing (OFDM) leads to intercarrier interference (ICI); therefore, system degradation occurs. Nevertheless, this issue ...
Modifying the stochastic model to mitigate GPS systematic errors in relative positioning
(2007-12-01)
The GPS observables are subject to several errors. Among them, the systematic ones have great impact, because they degrade the accuracy of the accomplished positioning. These errors are those related, mainly, to GPS ...
The effect of actuator and sensor placement on the active control of rotor unbalance
(2003-07-01)
This paper investigates both theoretically and experimentally the effect of the location and number of sensors and magnetic bearing actuators on both global and local vibration reduction along a rotor using a feedforward ...
A corpus-based study of adverbs of frequency in a goal-oriented distance learning forum
This paper reports on a corpus-based study that investigated the use of frequency adverbs in students' posts in a goal-oriented virtual forum. The participants in the study were undergraduate students enrolled in two ...
Mitigating systematic errors for single frequency GPS receivers employing a penalized least squares methodology
(2006-12-27)
Among the positioning systems that compose GNSS (Global Navigation Satellite System), GPS has the capability of providing low, medium and high precision positioning data. However, GPS observables may be subject to many ...