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Redundant Space Calibration of Hexagonal and Y-shaped Beamforming Radars and Interferometric Radiometers

REA Auditado

Tema: general: 

• Ingeniería y Ciencias Aplicadas›Ingeniería›Telecomunicaciones

C-space decomposition using deterministic sampling and distances

REA Auditado

Hierarchical cell decompositions of Configuration Space can be of great value for enhancing sampling-based path planners, as well as for other robotic tasks with requirements beyond the planning of free paths. This paper proposes an efficient method to obtain a hierarchical cell decomposition of C-space that is based on: a) the use of a deterministic sampling sequence that allows an uniform and incremental exploration of the space, and b) the use of distance measurements to handle as much information as possible from each sample in order to make the procedure more efficient.

Tema: general: 

• Ingeniería y Ciencias Aplicadas›Ingeniería›Ingeniería (General)

On interpolation and sampling in Hilbert spaces of analytic functions

REA Auditado

In this paper we give new proofs of some theorems due to Seip,
Seip-Wallsten and Lyubarskii-Seip on sequences of interpolation and
sampling for spaces of analytic functions that are square integrable with
respect to certain weights. The results are also given in a somewhat more
general setting.

Tema: general: 

• Ingeniería y Ciencias Aplicadas›Matemáticas y Física aplicadas

Què hem anat a fer a la NASA

REA Auditado

Som dos enginyers de telecomunicació de la UPC, el Xavier i la Beatriz, que treballem
de manera directa i indirecta en el sector aeroespacial i que aquest estiu passat hem
participat en un programa de la International Space University (ISU). Ho expliquem a continuació i us animem a participar-hi en les próximes edicions. Postprint (published version)

Tema: general: 

• Ingeniería y Ciencias Aplicadas›Ingeniería›Telecomunicaciones

Estructura y uso de los espacio públicos en los municipios turísticos de Gran Canaria

REA Auditado

Estudio de la relación que existe entre la estructura urbana de los espacios públicos de las urbanizaciones turísticas y el uso que se hace de estos espacios. Postprint (published version)

Tema: general: 

• Arte, Arquitectura y Artes Aplicadas›Arquitectura

Strong reflexivity of Abelian groups

REA Auditado

A reflexive topological group G is called strongly reflexive if each closed sub-group and each Hausdorff quotient of the group G and of its dual group is reflexive.
In this paper we establish the adequate concept of strong reflexivity for convergence groups and we prove that the product of countable many locally compact topological groups and complete metrizable nuclear groups are BB-strongly
reflexive.

Tema: general: 

• Ciencias›Matemáticas

Edge state in pipe flow experiments

REA Auditado

Recent numerical studies suggest that in pipe and related shear flows, the region of phase space separating laminar from turbulent motion is organized by a chaotic attractor, called an edge state, which mediates the transition process. We here confirm the existence of the edge state in laboratory experiments. We observe that it governs the dynamics during the decay of turbulence underlining its potential relevance for turbulence control. In addition we unveil two unstable traveling wave solutions underlying the experimental flow fields.

Tema: general: 

• Ciencias›Física

Star visibility and tracking from the Space Station

REA Auditado

Purpose of the present study is to provide algorithms for and examples of how to simulate star visibility and tracking by a Telescope attached to the main truss of the International Space Station (ISS). The sky visibility of a Telescope is limited by accommodation constraints on the truss, by obstructions caused by Station’s structural elements along with other payloads, by Sun and Moon’s light and by ram atomic Oxygen. It is also limited by Station’s orbit and attitude.

Tema: general: 

• Ingeniería y Ciencias Aplicadas›Ingeniería›Ingeniería Aeronáutica y Astronáutica

Fixed charge density in dielectrics deposited on c-Si using space charge region dominated lifetime measurements

REA Auditado

Depletion region modulation (DRM) effect is often observed in photoconductance lifetime
measurements of crystalline silicon wafers passivated by dielectric films. This effect is closely
related to the space-charge region electrostatically induced by fixed charges within the dielectric.
This study proposes a model for dielectric-passivated c-Si wafers, which includes the DRM effect,
to simulate and fit the effective lifetime vs excess minority carrier density curves obtained by
quasisteady-state photoconductance techniques.

Tema: general: 

• Ciencias Sociales›Educación

Latent Spaces in the City: Hybrid Practices in the Urban Realm

REA Auditado

Tema: general: 

• General