Utilidad de los archivos de prensa en el estudio de inestabilidades de ladera en Asturias (NO de España)

[ResumenLa aplicación de los archivos de prensa al estudio de inestabilidades de ladera en Asturias plantea diversas limitaciones metodológicas. Entre ellas destacan la baja frecuencia de noticias referentes a inestabilidades, la recogida prácticamente exclusiva de aquellas que afectan a infraestructuras y la ausencia de una toma de datos de carácter científico. Sin embargo, el análisis de la información de 209 noticias pertenecientes al período 1980-94 ha puesto de manifiesto su utilidad en diversos aspectos, como la ubicación global de las inestabilidades de ladera en la Cuenca Carbonífera Central, y la valoración de su impacto sobre infraestructuras. Es destacable asimismo la posibilidad que ofrece este tipo de archivos como regis·tro cronológico de inestabilidades, lo que ha permitido establecer una aproximación a la relación temporal entre los eventos de precipitación e inestabilidad.[Abstract] The application of newspaper archives to the study of slope instabilities in Asturias has several methodological limitations. Sorne of them are the low frequency of news refering to slope instability and the publication of only those affecting people and infrastructures without a scientifical data collection. Nevertheless, the analysis of the information about 209 news in the period 198094 has evidenced its utility in showing the spatiallocation of instabilities in the Central Coal Basin, and giving an approach to its impact over infrastructures. It is also worth to point out the possibility of using these archives as chronological instability records. This has allowed the establishment of an approach to the temporal relationships between rainfal1 and instability events for the studied interval

El proyecto Flying Challenge, una experiencia de interconexión universidad-empresa utilizando mentoría entre iguales

Congreso Universitario de Innovación Educativa En las Enseñanzas Técnicas, CUIEET (26º. 2018. Gijón

Interaction between a laser beam and semiconductor nanowires: application to the raman spectrum of Si nanowires

One presents in this work the study of the interaction between a focused laser beam and Si nanowires (NWs). The NWs heating induced by the laser beam is studied by solving the heat transfer equation by finite element methods (fem). This analysis permits to establish the temperature distribution inside the NW when it is excited by the laser beam. The overheating is dependent on the dimensions of the NW, both the diameter and the length. When performing optical characterization of the NWs using focused laser beams, one has to consider the temperature increase introduced by the laser beam. An important issue concerns the fact that the NWs diameter has subwavelength dimensions, and is also smaller than the focused laser beam. The analysis of the thermal behaviour of the NWs under the excitation with the laser beam permits the interpretation of the Raman spectra of Si NWs, where it is demonstrated that temperature induced by the laser beam play a major role in shaping the Raman spectrum of Si NW

Class mutation operators for C++ object-oriented systems

Mutation testing is a fault injection testing technique around which a great variety of studies and tools for different programming languages have been developed. Nevertheless, the mutation testing research with respect to C++ is pending. This paper proposes a set of class mutation operators related to this language and its particular object-oriented (OO) features. In addition, an implementation technique to apply mutation testing based on the traversal of the abstract syntax tree (AST) is presented. Finally, an experiment is conducted to study the operator behaviour with different C++ programs, suggesting their usefulness in the creation of complete test suites. The analysis includes a Web service (WS) library, one of the domains where this technique can prove useful, considering its challenging testing phase and that C++ is still a reference language for critical distributed systems WS

Laser Induced Heating of Group IV Nanowires

Semiconductor nanowires (NWs) are fundamental structures for nanoscale devices. The excitation of NWs with laser beams results in thermal effects that can substantially change the spectral shape of the spectroscopic data. In particular, the interpretation of the Raman spectrum is greatly influenced by excitation induced temperature. A study of the interaction of the NWs with the excitation laser beam is essential to interpret the spectra. We present herein a finite element analysis of the interaction between the laser beam and the NWs. The resultas are applied to the interpretation of the Raman spectrum of bundles of NW

Interaction between a laser beam and semiconductor nanowires: application to the raman spectrum of Si nanowires

One presents in this work the study of the interaction between a focused laser beam and Si nanowires (NWs). The NWs heating induced by the laser beam is studied by solving the heat transfer equation by finite element methods (FEM). This analysis permits to establish the temperature distribution inside the NW when it is excited by the laser beam. The overheating is dependent on the dimensions of the NW, both the diameter and the length. When performing optical characterisation of NWs using focused laser beams, one has to consider the temperature increase introduced by the laser beam. An important issue concerns the fact that the NW's diameter has subwavelength dimensions, and is also smaller than the focused laser beam. The analysis of the thermal behaviour of the NWs under the excitation with the laser beam permits the interpretation of the Raman spectrum of Si NWs. It is demonstrated that the temperature increase induced by the laser beam plays a major role in shaping the Raman spectrum of Si NWs