arcel arcel - Academia.edu (original) (raw)
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University of the Basque Country, Euskal Herriko Unibertsitatea
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Papers by arcel arcel
Power System Control and Stability, 2009
Analyzes the dynamic performance of interconnected power systems. * Examines the characteristics ... more Analyzes the dynamic performance of interconnected power systems. * Examines the characteristics of the various components of a power system during normal operating conditions and during disturbances. * Explores the detailed mathematical models of system components and analyzes the system behavior using the necessary computational tools.
Mathematica Applicanda, 2016
We present an algorithm for finding almost optimal partitions of the unit interval [0; 1) accordi... more We present an algorithm for finding almost optimal partitions of the unit interval [0; 1) according to given nonatomic measures 1; 2; : : : ; n. This algorithm is based on the idea of Riemann integral and the linear programming method. We also discuss the number of cuts needed for finding the optimal partitions.
SPIE Proceedings, 1995
The gain-dependent polarization properties of vertical-cavity sdace emitting lasers and methods f... more The gain-dependent polarization properties of vertical-cavity sdace emitting lasers and methods for polarization control and modulation are discussed. The partitioning of power between the two orthogonal eigen polarizations is shown to depend upon the relative spectral alignment of the nondegenerate polarization cavity resonances with the laser gain spectrum. A dominant polarization can thus be maintained by employing a blue-shifted offset of the peak laser gain relative to the cavity resonance wavelength. Alternatively, the polarization can be controlled through use of anisotropic transverse cavity geometries. The orthogonal eigen polarizations are also shown to enable polarization modulation. By exploiting polarization switching transitions in cruciform lasers, polarization modulation of the fundamental mode up to 50 MHz is demonstrated. At lower modulation frequencies, complementary digital polarized output or frequency doubling of the polarized output is obtained. Control and manipulation of vertical-cavity laser polarization may prove valuable for present and future applications.
American Economic Journal: Applied Economics, 2011
We present in this paper evidence about the effects and mechanisms of gender peer effects in elem... more We present in this paper evidence about the effects and mechanisms of gender peer effects in elementary, middle, and high schools. For identification, we rely on idiosyncratic variations in gender composition across adjacent cohorts within the same schools. We find that an increase in the proportion of girls improves boys and girls' cognitive outcomes. These academic gains are mediated through lower levels of classroom disruption and violence, improved inter-student and student-teacher relationships, and lessened teachers' fatigue. We find no effect on individual behavior, which suggests that the positive effects of girls on classroom environment are mostly due to compositional change. (JEL I21, J16)
Power System Control and Stability, 2009
Analyzes the dynamic performance of interconnected power systems. * Examines the characteristics ... more Analyzes the dynamic performance of interconnected power systems. * Examines the characteristics of the various components of a power system during normal operating conditions and during disturbances. * Explores the detailed mathematical models of system components and analyzes the system behavior using the necessary computational tools.
Mathematica Applicanda, 2016
We present an algorithm for finding almost optimal partitions of the unit interval [0; 1) accordi... more We present an algorithm for finding almost optimal partitions of the unit interval [0; 1) according to given nonatomic measures 1; 2; : : : ; n. This algorithm is based on the idea of Riemann integral and the linear programming method. We also discuss the number of cuts needed for finding the optimal partitions.
SPIE Proceedings, 1995
The gain-dependent polarization properties of vertical-cavity sdace emitting lasers and methods f... more The gain-dependent polarization properties of vertical-cavity sdace emitting lasers and methods for polarization control and modulation are discussed. The partitioning of power between the two orthogonal eigen polarizations is shown to depend upon the relative spectral alignment of the nondegenerate polarization cavity resonances with the laser gain spectrum. A dominant polarization can thus be maintained by employing a blue-shifted offset of the peak laser gain relative to the cavity resonance wavelength. Alternatively, the polarization can be controlled through use of anisotropic transverse cavity geometries. The orthogonal eigen polarizations are also shown to enable polarization modulation. By exploiting polarization switching transitions in cruciform lasers, polarization modulation of the fundamental mode up to 50 MHz is demonstrated. At lower modulation frequencies, complementary digital polarized output or frequency doubling of the polarized output is obtained. Control and manipulation of vertical-cavity laser polarization may prove valuable for present and future applications.
American Economic Journal: Applied Economics, 2011
We present in this paper evidence about the effects and mechanisms of gender peer effects in elem... more We present in this paper evidence about the effects and mechanisms of gender peer effects in elementary, middle, and high schools. For identification, we rely on idiosyncratic variations in gender composition across adjacent cohorts within the same schools. We find that an increase in the proportion of girls improves boys and girls' cognitive outcomes. These academic gains are mediated through lower levels of classroom disruption and violence, improved inter-student and student-teacher relationships, and lessened teachers' fatigue. We find no effect on individual behavior, which suggests that the positive effects of girls on classroom environment are mostly due to compositional change. (JEL I21, J16)