La ejecución de la obligación de entrega en el contrato de suministro en el ACM

El contrato de suministro no tiene regulación propia en las normas de la contratación privada. El ACM lo incorporará al elenco de contratos que regulan el intercambio de bienes como un contrato afín a la compraventa con la que tiene muchísimas conexiones. La principal obligación del suministrador - suministrar – puede identificarse con la obligación de entrega de los bienes en la compraventa si bien tiene algunas características propias derivadas del carácter de ejecución continuada del contrato. A estas especialidades recogidas en el texto proyectado dedicaremos este estudio

3D hydrodynamic model as a tool for more efficient port management and operations.

Ports have been attempting to increase their competitiveness by enhancing their productivity and operate in a more environmentally friendly way. The Port of Seville is located in the Guadalquivir River in the south of Spain and it is the unique Spanish inland port. The estuary has generated and is still generating conflicts of interests. The access channel to the port is being periodically dredged, the natural course has been anthropologically modified several times, original salt marshes have been transformed to grow rice and approximately one-fourth of the total surface of the estuary is now part of two protected areas, one of them is a UNESCO_MAB Biosphere Reserve. Despite its socio-economic and environmental significance there is a surprising lack of scientific and technical information about the environmental interactions between the port activities and the Guadalquivir estuary stakeholders. A 3D hydrodynamic model has been developed to study the tidal regime, water circulation, temperature and salinity distributions, flooding areas and the sediment dynamics in the estuary. The model output has been validated with in situ current speed, direction, water elevation and also with temperature and salinity measurements. Good agreement between modeled and real measurements have been obtained. Our preliminary results show that the vessel traffic management could be improved by using the tidal elevations and currents calculated by the model in the whole estuary. The interactions among the port activities (mainly due of changes in the sediments dynamics), the watershed management and the saline intrusion evolution will be studied in detail. 3D Hydrodynamic Modelling provide spatially explicit information on the key variables governing the dynamics of estuarine areas. The numerical model is a powerful tool to effectively guide the management and operations of ports located in a complex socio-ecological systems.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Cultura digital y movimientos sociales

Sin resume

Heat fluxes between the Guadalquivir river and the Gulf of Cádiz Continental Shelf

An 18-year time series of daily sea surface temperature of Gulf of Cadiz and an 18-month time series of temperature collected in the vicinity of the Guadalquivir estuary mouth have been analyzed to investigate the heat exchange between the estuary and the adjacent continental shelf. The first time identifies a continental shelf area where seasonal thermal oscillation signal (amplitudes and phase) changes abruptly. In order to explain this anomaly, the second data set allows a description of thermal fluctuations in a wide range of frequencies and an estimation of the upstream heat budget of the Guadalquivir estuary. Results show that high frequency thermal signal, diurnal and semidiurnal, and water flux signal through Guadalquivir mouth, mainly semidiurnal, apparently interact randomly to give a small exchange of thermal energy at high frequency. There is no trace, at the estuary's mouth, of daily heat exchanges with intertidal mudflats probably because it tends to cancel on daily time scales. Results also show that fluctuations of estimated air-sea fluxes force fluctuations of temperature in a quite homogeneous estuarine, with a delay of 20 days. The along-channel thermal energy gradient reaches magnitudes of 300-400 J m-4 near the mouth during the summer and winter and drives the estuary-shelf exchange of thermal energy at seasonal scale. Particularly, the thermal heat imported by the estuary from the shelf area during late fall-winter-early spring of 2008/2009 is balanced by the thermal heat that the estuary exports to the shelf area during late spring-summer of 2008. In summary, Guadalquivir river removes/imports excess of thermal energy towards/from the continental shelf seasonally, as a mechanism to accommodate excess of heat from one side respect to the other side.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Autoridad Portuaria de Sevilla (APS

Physical characterization of the Guadiana Estuary using a 3D model

Guadiana estuary is an intertidal estuary situated in SW of Iberian Península, the latest 50 Km of which constitutes the natural border between Spain and Portugal. Tidal influence extends to about 80 Km upstream. The Guadiana River presents a high seasonal irregularity with wet winters and dry summers. A 3D hydrodynamic model based on the MOHID System has been developed to study the hydrodynamics of the Guadiana Estuary. The model has been validated by comparison the output with in situ data measurements in several points along the estuary.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Carlos Pereda, Pensar a México. Entre otros reclamos

Este artículo reseña: Carlos Pereda, Pensar a México. Entre otros reclamos. (2021) Gedisa UNAM, Ciudad de México, 153 p

Citizenship. The fight for inclusion and rights

Álvaro Aragón Rivera nos ofrece uno de los textos más extraordinarios en lo que se refiere a la historia del pensamiento político de la ciudadanía. En la Ciudadanía. La lucha por la inclusión y los derechos rastrea la naturaleza repetitiva –y diferente– del concepto para dar cuenta de un constructo teórico y epistemológico que hoy deviene en una experiencia central para analizar su papel en el contexto de las democracias liberales. Repite, desplaza y esboza los gestos que anidan en el pensamiento político desde los griegos hasta los atisbos que la ciudadanía cosmopolita perfila, identificando aquellos rasgos que permanecen latentes en las formas de comprender el significado de la ciudadanía en el presente. Sumar y restar, disminuir y añadir, constituyen la palanca epistémica que nuestro autor invoca para re-construir el movimiento al que la ciudadanía se ha confrontado desde sus orígenes.Álvaro Aragón Rivera offers us one of the most extraordinary texts regarding the history of the political thought of the citizenry. In Citizenship. The struggle for inclusion and rights traces the repetitive –and different– nature of the concept to account for a theoretical and epistemological construct that today becomes a central experience to analyze its role in the context of liberal democracies. It repeats, displaces and outlines the gestures that nest in political thought from the Greeks to the glimpses that cosmopolitan citizenship outlines, identifying those features that remain latent in the ways of understanding the meaning of citizenship in the present. Adding and subtracting, decreasing and adding, constitute the epistemic lever that our author invokes to re-construct the movement that citizens have confronted since its origins

Los derechos humanos y su puesta en marcha por actores globales

Discussing the way human rights are implemented by global actors who are able to make them explicit and achievable within the framework of a symbolic horizon where the right to have rights and the right to question the law exist opens up the possibility of undertaking an exercise of political action designed to update them. Two issues will be discussed in this respect: the interactive universalism of Seyla Benhabib and the role of the political action of global actors, developed through democratic iterations that re-establish the link between politics and law, placing human rights within the Arendtian register of the “right to have rights”, while providing a radical critique of the universal idea of human rights that makes them impossible to achieve in today’s world.Discutir el modo en que los derechos humanos son puestos en marcha por actores globales que son capaces de hacerlos explícitos y realizables en el marco de un horizonte simbólico donde el derecho a tener derechos y el derecho a cuestionar el derrecho, abre la posibilidad de llevar a cabo un ejercicio de acción política dirigida a actualizarlos. Dos cuestiones serán discutidas en este sentido, el universalismo interactivo de Seyla Benhabib y, el papel de la acción política de actores globales, llevada a cabo mediante iteraciones democráticas desarrolladas por diversos activistas que producen una re-articulación entre la política y la ley, colocando los derechos humanos en el registro arendtiano del “derecho a tener derechos”, a la vez que visibilizan una crítica radical a la idea universal de los derechos humanos que los vuelven irrealizables en el mundo presente