QR : Q??digo Rebelde

Se describe una experiencia que consiste en aprender Franc??s a trav??s de c??digos QR (Quick Response). Se especifican las actividades en las que se pueden utilizar estos c??digos y las ventajas de su uso

La q??esti?? migrat??ria : ??un debat mediterrani o transoce??nic?

Resumen basado en el de la publicaci??n

An??lisis de la conceptualizaci??n del aprendizaje del alumnado de Grados en Educaci??n : una aplicaci??n de la metodolog??a Q

Resumen tomado de la publicaci??n

The relation of E.Q and I.Q. to learning from the standard self-instructional programs in spelling and english

This paper reviews a study that was done with hearing and hearing impaired children to test the effectiveness of self-instructional programs and whether the results can be correlated with Educational Quotient and Intelligence Quotient.

Aplicación del rediseño curricular de EIB en el sexto y séptimo nivel de educación básica del Centro Educativo Experimental Intercultural Bilingüe "CEDEIB-Q" de San Roque, Quito, Pichincha

El reto de los sistemas educativos debe centrar en ofrecer la calidad que la sociedad exige: primero por la atención a la diversidad, que demanda de una oferta educativa de atención definida, que cada alumno requiere en términos de equidad y segundo por una permanente evaluación que es el medio de disposición de elementos de juicio fiables y válidos, para tomar medidas inmediatas de mejora de los diferentes componentes del sistema educativo, con mayor convencimiento de que la educación intercultural sigue siendo una de las prioridades centrales de la humanidad, sustentada en la equidad, pertinencia, eficacia y eficiencia característica, de la excelencia. En este contexto el trabajo que se presenta en esta tesis, es un intento por entregar una visión representada como un proceso de investigación, análisis e interrelación de reformas educativas de los sistemas, con la historia de los procesos de lucha de los pueblos indígenas exteriorizado en experiencias educativas previas y las sugerencias de las concepciones técnico-científicas de la educación vinculado con el siglo XXI la sociedad del conocimiento y de la información, un interés por comprender en educación la realidad socio-lingüística, político-económica y socio-cultural de los pueblos indígenas. Sin embargo en el esfuerzo de realizar esta investigación, sobre la “Aplicación del Rediseño Curricular de EIB., en el sexto y séptimo nivel de Educación Básica del CEDEIB-Q” de San Roque, Quito, Pichincha, a pesar de que las experiencias previas antes de la creación de la DINEIB han sido exitosas, el sistema de EIB., no ha contribuido a fortalecer estas expectativas, puesto que según los resultados, existiendo un instrumento curricular, no ha apoyado a su real aplicación: las “clases” se realizan en español, no existen materiales de consistencia en LM., no se evidencia la presencia de los factores asociados al proceso, se demuestra un descuido total del sistema en los procesos de reconceptualización del currículo, capacitación, acompañamiento y evaluación continua.

"Indianizar al 'Q'ara' ": una nueva política de conocimiento (Tema Central)

La presencia, en Bolivia de un katarismo radical, promovido por los más recientes movimientos indigenistas, nos obliga a repensar las políticas de conocimiento criollo-mestizas. En este sentido, el presente artículo ubica la propuesta de "indianizar al q'ara" como una "pedagogía al revés" con la cual la ideología katarista radical de Felipe Quispe, alias "el Mallku", cuestiona desde abajo el mestizaje que los grupos dominantes promueven desde principios de siglo.

Parameter sensitivity and predictive uncertainty in a new water quality model, Q(2)

A new dynamic model of water quality, Q(2), has recently been developed, capable of simulating large branched river systems. This paper describes the application of a generalized sensitivity analysis (GSA) to Q(2) for single reaches of the River Thames in southern England. Focusing on the simulation of dissolved oxygen (DO) (since this may be regarded as a proxy for the overall health of a river); the GSA is used to identify key parameters controlling model behavior and provide a probabilistic procedure for model calibration. It is shown that, in the River Thames at least, it is more important to obtain high quality forcing functions than to obtain improved parameter estimates once approximate values have been estimated. Furthermore, there is a need to ensure reasonable simulation of a range of water quality determinands, since a focus only on DO increases predictive uncertainty in the DO simulations. The Q(2) model has been applied here to the River Thames, but it has a broad utility for evaluating other systems in Europe and around the world.

Sonic to ultrasonic Q of sandstones and limestones: Laboratory measurements at in situ pressures

Laboratory measurements of the attenuation and velocity dispersion of compressional and shear waves at appropriate frequencies, pressures, and temperatures can aid interpretation of seismic and well-log surveys as well as indicate absorption mechanisms in rocks. Construction and calibration of resonant-bar equipment was used to measure velocities and attenuations of standing shear and extensional waves in copper-jacketed right cylinders of rocks (30 cm in length, 2.54 cm in diameter) in the sonic frequency range and at differential pressures up to 65 MPa. We also measured ultrasonic velocities and attenuations of compressional and shear waves in 50-mm-diameter samples of the rocks at identical pressures. Extensional-mode velocities determined from the resonant bar are systematically too low, yielding unreliable Poisson's ratios. Poisson's ratios determined from the ultrasonic data are frequency corrected and used to calculate the sonic-frequency compressional-wave velocities and attenuations from the shear- and extensional-mode data. We calculate the bulk-modulus loss. The accuracies of attenuation data (expressed as 1000/Q, where Q is the quality factor) are +/- 1 for compressional and shear waves at ultrasonic frequency, +/- 1 for shear waves, and +/- 3 for compressional waves at sonic frequency. Example sonic-frequency data show that the energy absorption in a limestone is small (Q(P) greater than 200 and stress independent) and is primarily due to poroelasticity, whereas that in the two sandstones is variable in magnitude (Q(P) ranges from less than 50 to greater than 300, at reservoir pressures) and arises from a combination of poroelasticity and viscoelasticity. A graph of compressional-wave attenuation versus compressional-wave velocity at reservoir pressures differentiates high-permeability (> 100 mD, 9.87 X 10(-14) m(2)) brine-saturated sandstones from low-permeability (< 100 mD, 9.87 X 10 (14) m(2)) sandstones and shales.

Implementation of Parallel (p,q) Counters for High Speed Digital Multipliers

Both the (5,3) counter and (2,2,3) counter multiplication techniques are investigated for the efficiency of their operation speed and the viability of the architectures when implemented in a fast bipolar ECL technology. The implementation of the counters in series-gated ECL and threshold logic are contrasted for speed, noise immunity and complexity, and are critically compared with the fastest practical design of a full-adder. A novel circuit technique to overcome the problems of needing high fan-in input weights in threshold circuits through the use of negative weighted inputs is presented. The authors conclude that a (2,2,3) counter based array multiplier implemented in series-gated ECL should enable a significant increase in speed over conventional full adder based array multipliers.

Analysis and compensation of I/Q imbalance in MIMO transmit-receive diversity systems

In wireless communication systems, all in-phase and quadrature-phase (I/Q) signal processing receivers face the problem of I/Q imbalance. In this paper, we investigate the effect of I/Q imbalance on the performance of multiple-input multiple-output (MIMO) maximal ratio combining (MRC) systems that perform the combining at the radio frequency (RF) level, thereby requiring only one RF chain. In order to perform the MIMO MRC, we propose a channel estimation algorithm that accounts for the I/Q imbalance. Moreover, a compensation algorithm for the I/Q imbalance in MIMO MRC systems is proposed, which first employs the least-squares (LS) rule to estimate the coefficients of the channel gain matrix, beamforming and combining weight vectors, and parameters of I/Q imbalance jointly, and then makes use of the received signal together with its conjugation to detect the transmitted signal. The performance of the MIMO MRC system under study is evaluated in terms of average symbol error probability (SEP), outage probability and ergodic capacity, which are derived considering transmission over Rayleigh fading channels. Numerical results are provided and show that the proposed compensation algorithm can efficiently mitigate the effect of I/Q imbalance.

Impact of I/Q imbalance on the performance of two-way CSI-assisted AF relaying

In this paper, we investigate half-duplex two-way dual-hop channel state information (CSI)-assisted amplify-and-forward (AF) relaying in the presence of in-phase and quadrature-phase (I/Q) imbalance. A compensation approach for the I/Q imbalance is proposed, which employs the received signals together with their conjugations to detect the desired signal. We also derive the average symbol error probability of the considered half-duplex two-way dual-hop CSI-assisted AF relaying networks with and without compensation for I/Q imbalance in Rayleigh fading channels. Numerical results are provided and show that the proposed compensation method mitigates the impact of I/Q imbalance to a certain extent.