Capital humano : el gestor del conocimiento, el trabajador intelectual y el sistema de remuneración basado en el conocimiento

En la Sociedad de la Información y del Conocimiento, el Capital Intelectual es el recurso estratégico esencial de las organizaciones. El Capital Intelectual está formado por el Capital Humano (CH), por el Capital Estructural (CE) y por el Capital Relacional (CR), siendo el Capital Humano el motor que impulsa el desarrollo económico y financiero. En este nuevo entorno tres figuras son analizadas como esenciales en la gestión de los recursos humanos: el gestor del conocimiento, el trabajador intelectual y el sistema de pago basado en el conocimiento._____________________________In this knowledge and information society, intellectual capital is the essential strategic resource of organizations. Intellectual Capital is composed oJ'Human Capital (HC). Structural Capital (SC) and Relational Capital. Human Capital is the motor that generates economic and financial development. In this new environment, we consider three figures as the fundamental parts of human resource management: the Chief Knowledge Officer,, Knowledge worker, and the knou'ledgebased remuneration system

Mediaciones tecnológicas: Cuerpos, afectos y subjetividades

Depto. de Sociología: Metodología y TeoríaFac. de Ciencias Políticas y SociologíaTRUEpu

Use of cobalt siccative in contemporary oil painting: a study of its behavior after accelerated ageing

The present paper presents the results obtained after a study of the behavior of oil paint after addition of cobalt siccative in various ratios. This is a procedure particularly used by artists taking part in fast painting competitions, which require fast drying of their work, but also by many artists who shorten drying times of their works by using this substance. The study focuses on analysis of color alteration in pictorial layers after being subjected to ageing cycles in a climatic and photo-oxidation chamber. Particular emphasis has been placed on the study of color alteration as it is one of the factors that can affect conceptual aspects of contemporary works. For this reason, a survey was held among many artists, which yielded interesting data on ratios, use, and artistic intentions. After ageing (exposition to UV radiation for 900 hours and a temperature ranging between 10 and 50º C, with humidity also ranging between 60 and 90% for 500 hours), and having studied behavior through microphotography and colorimetry, it was concluded that UV radiation causes fading in pictorial layers, with most impact on blue tones, and that humidity and temperature ageing slightly darkens colors, placing stress on the priming layer and in tension areas close to the paint.Llamas Pacheco, R.; Torrente Casado, A. (2015). Use of cobalt siccative in contemporary oil painting: a study of its behavior after accelerated ageing. Arché. (10):29-38. http://hdl.handle.net/10251/8519629381

Epílogo: Controversias y desasosiegos metodológicos

Depto. de Sociología AplicadaFac. de Ciencias Políticas y SociologíaTRUEMinisterio de Ciencia e Innovación (MICINN)pu

Capturing rockfall kinematic and fragmentation parameters using high-speed camera system

This paper presents a procedure for tracking rockfall trajectories and extracting kinematic parameters from both the impacts and the resultant fragments. A set of full scale rockfall experiments was performed in a quarry located in Vallirana, Barcelona (Spain). The study site was chosen due to the presence of a rigid discontinuity surface, inclined at 42° in the middle of the slope, whose configuration was expected to favor the breakage of the blocks. The trajectories of the blocks released and of the resultant fragments were recorded with three video cameras. A C++ program was specifically developed to track the 3D trajectory of blocks and fragments, and measure velocities before and after the impact. Two different modules were implemented, one for the blocks that break and one for those that do not. The trajectory of a non-fragmented block is obtained by comparing it to its 3D model. In this way, both the center of mass position and the orientation of the block are tracked. For fragmented blocks, the local coordinates of the fragments determined from the images are converted to terrain coordinates using the program we developed. A total of 16 blocks and 36 rock fragments after impact were tracked. The parameters obtained were georeferenced and linked to a common system of 3D terrestrial coordinates. The captured parameters allow obtaining the velocity distribution of fragments, the coefficient of restitution, and energy balance for the blocks that break. To our knowledge, this is the first attempt to capture kinematic parameters of rock fragments that result from the impact and breakage of rock blocks in full-scale tests. Although the analysis of the rockfall fragmentation phenomenon is beyond of this work, we have compared the performance of the fragmented and unbroken blocks. To this purpose, we have built 3D models of the rock fragments generated using images captured with a drone. The results indicate that blocks that fragment show higher rebound velocities and coefficients of restitution than the blocks that do not although there exists a certain overlap between the two groups. Despite the experiment is carried out on the same discontinuity surface and with small variations in the impact velocities, impact kinetic energies and impact angles, the coefficients of restitution obtained present a wide range of values, both for the blocks that break and for those who do not. The number of tested blocks is too small to draw generalizable conclusions, but they highlight the stochastic nature of the rebound process and the necessity to consider additional parameters for its understanding. Finally, the results confirm the relation between the dissipated energy and, especially the impact energy and the new area created by fragmentation. Furthermore, the blocks that hit the ground with the face are those that generate the most new area while those that hit the vertex generate less.Peer ReviewedPostprint (published version

Implementation of a fixed-location time lapse photogrammetric rock slope monitoring system in Castellfollit de la Roca, Spain

When monitoring deformations in natural hazards such as rockfalls and landslides, the use of 3D models has become a standard. Several geomatic techniques allow the generation of these models. However, each one has its pros and cons regarding accuracy, cost, sample frequency, etc. In this contribution a fixed-location time lapse camera system for continuous rockfall monitoring using photogrammetry has been developed as an alternative to Light Detection and Ranging (LiDAR) and ground-based interferometric synthetic-aperture radar (GB-InSAR). The usage of stereo photogrammetry allows the obtention of 3D points clouds at a low cost and with a high sample frequency, essential to detect premonitory displacements. In this work the designed system consists of three digital single-lens reflex (DSLR) cameras which collect photographs of the rock slope daily controlled by a Raspberry Pi computer using the open-source library gPhoto2. Photographs are automatically uploaded to a server using 3G network for processing. This system was implemented at Castellfollit de la Roca village (Girona province, Spain), which sits on a basaltic cliff that has shown significant rockfall intensity in recent years. The 3D models obtained will allow monitoring rockfalls frequency, premonitory displacements, and calculate the erosion rate of the slope. All technical decisions taken for the design and implementation on this specific site are discussed and first results shown.This work has been carried within the framework of the research project Georisk “Avances en el análisis de la cuantificación del riesgo (QRA) por desprendimientos rocosos”, PID2019-103974RB-I00 funded by MCIN/AEI/ 10.13039/501100011033. We want to acknowledge the ICGC team for their recommendations during the design of the system and during its implementation on the field. Also, to Vilarrasa S.L enterprise for allowing the placement of the cameras on its buildings. Finally, we appreciate all help provided by the Montagut i Oix local council.Postprint (published version

Technological Platform to Facilitate the Labor Integration of People with Auditory Impairements

This paper presents a technological platform aimed at obtaining an on-line workspace for exchanging digital contents in an easy, intuitive and accessible manner. The main objective of the platform is to provide facilities to inform, train and evaluate the competencies of disabled people, and more specifically those skills required to facilitate the labor integration of individuals with auditory disabilities. The platform also focuses on providing training processes that facilitate the incorporation of disabled people to labor environments. The platform presented in this paper has been tested in a real environment and the results obtained are promising

Rainbow trout surviving infections of viral haemorrhagic septicemia virus (vhsv) show lasting antibodies to recombinant g protein fragments

P. 929-935Rainbow trout antibodies (Abs) binding to recombinant fragments (frgs) derived from the protein G of the viral haemorrhagic septicemia virus (VHSV)-07.71 strain, could be detected by ELISA (frg-ELISA) in sera from trout surviving laboratory-controlled infections. Abs were detected not only by using sera from trout infected with the homologous VHSV isolate but also with the VHSV-DK-201433 heterologous isolate, which had 13 amino acid changes. Sera from healthy trout and/or from trout surviving infectious haematopoietic necrosis virus (IHNV) infection, were used to calculate cut-off absorbances to differentiate negative from positive sera. Specific anti-VHSV Abs could then be detected by using any of the following frgs: frg11 (56-110), frg15 (65-250), frg16 (252-450) or G21-465. While high correlations were found among the ELISA values obtained with the different frgs, no correlations between any frg- ELISA and complement-dependent 50 % plaque neutralization test (PNT) titres could be demonstrated. Between 4 to 10 weeks after VHSV-infection, more trout sera were detected as positives by using heterologous frg-ELISA rather than homologous PNT. Furthermore, the percentage of positive sera detected by frg11-ELISA increased with time after infection to reach 100 %, while those detected by complement-dependent PNT decreased to 29.4 %, thus confirming that the lack of neutralising Abs does not mean the lack of any anti-VHSV Abs in survivor trout sera. Preliminary results with sera from field samples suggest that further refinements of the frg-ELISA could allow detection of anti-VHSV trout Abs in natural outbreaks caused by different heterologous VHSV isolates.The homologous frg-ELISA method could be useful to follow G immunization attempts during vaccine development and/or to best understand the fish Ab response during VHSV infections. The viral frgs approach might also be used with other fish species and/or viruses.S

Evaluation of Labor Units of Competency: Facilitating Integration of Disabled People

Education and training for disabled people has acquired a growing relevance during the last decade, especially for labour integration. Disabled people represent a considerable percentage of the current population and require special education. This paper presents a competencies model to evaluate the skills of disabled people previous to their integration to working scenarios