Evolution of the infrared Tully-Fisher relation up to z=1.4

The Tully-Fisher relation (TFR) represents a connection between fundamental galaxy parameters, such as its total mass and the mass locked in stars. Therefore, the study of the evolution of this relation in the optical and infrared bands can provide valuable information about the evolution of the individual galaxies through the changes found in each band. This work aims to study the TFR at high redshift in the B, V, R, I, and K-bands by comparison with the local relations derived from a large sample of galaxies in the redshift range 0.1<z<0.3, processed in the same way, and with the same instrumental constraints that the high-redshift sample. Using the large photometric information available in the AEGIS database, we have studied the best procedure to obtain reliable k-corrections. Instrumental magnitudes are then k and extinction corrected and the absolute magnitudes derived, using the concordance cosmological model. The rotational velocities have been obtained from the widths of optical lines using DEEP2 spectra. Finally, morphology has been determined via visual classification of the HST images. We detect evolution in the B, V and R-band TFRs in the sense that galaxies were brighter in the past for the same rotation velocity. The change in luminosity is more noticeable in the bluer bands. This colour evolution, unnoticed in our previous work (Fern\'andez Lorenzo et al. 2009) has been detected thanks to the more reliable k-corrections carried out in this paper, which included photometry from B to IRAC bands. The change in the (V-K) and (R-I) colours (for a fixed velocity) could be interpreted as an ageing of the stellar populations as consequence of the star formation decrease since z=1.25. In addition, we conclude that spiral galaxies could have doubled their stellar masses in the last 8.6 Gyr.Comment: 14 pages, 10 figures; accepted in A&

Stellar Populations with ELTs

The star formation, mass assembly and chemical enrichment histories of galaxies, and their present distributions of dark matter, remain encoded in their stellar populations. Distinguishing the actual distribution functions of stellar age, metallicity and kinematics at several locations in a range of galaxies, sampling across Hubble types and representative environments, is the information required for a robust description of galaxy histories. Achieving this requires large aperture, to provide the sensitivity to reach a range of environs and Hubble types beyond the Local Group, to provide high spatial resolution, since the fields are crowded, and preferably with optical performance since age-sensitivity is greatest near the main-sequence turn-off, and metallicity-sensitivity for these warm stars is greatest in the optical.Comment: IAU Symposium No. 232, eds P. Whitelock, B. Leidundgeit & M. Dennefel

Towards reframing professional expert support

The paper addresses practical ways of reconfiguring professional expertise in development practice in moving away from the expert as a technocrat. Two projects associated with managing natural resource dilemmas suggest an alternative way of framing intervention involving professional experts providing a more appropriate collaborative learning space for development practice. The paper describes the heuristic devices generated by each project as helpful in bringing out dialectic tensions between practice and understanding, and between systems of interest and situations of interest (or situated problems). Firstly, SLIM (social learning for the integrated management and sustainable use of water at catchment scale) - a European Framework Programme 5 project - exemplifies social learning as a measure of sustainable development. The heuristic illustrates the dependence of sustainability on changes in practice and understanding amongst professionals and other stakeholders as part of concerted - rather than merely individual or even collective - action. Secondly, ECOSENSUS (Electronic/Ecological Collaborative Sensemaking Support System) - a Guyana focused intervention involving several UK universities in collaboration with the University of Guyana and Amerindian community representatives from the North Rupununi wetlands - builds on the SLIM heuristic in supporting the development of practice. Additionally, the ECOSENSUS heuristic provides conceptual space for the interaction between conceptual constructs of distributed stakeholders (that is, systems thinking) including those with professional expertise, and the actual context of intervention (the situated problem). Both SLIM and ECOSENSUS provide heuristics for process-orientated management enabling more meaningful and purposeful interaction between professional/ technical experts and other stakeholders, as an alternative to conventional project-orientated management intervention. An alternative framing may help to steer practice away from the apoliticised comforting linearity of professionalised systematic project management towards more constructive systemic endeavours involving multiple stakeholders

Trading Virtual Legacies (Management of Tradition from Alexandria to Internet)

Will the reconstructed library of Alexandria prevent a forthcoming clash of civilizations? Inventing and re-inventing traditions requires total quality management and multiple networking in shifting alliances in the information space. Stock exchange of cultural forms has long abandoned the golden standards of Enlightenment and follows a theory of cultural relativity and an international political economy of attention.Virtual legacies;cultural relativity;detraditionalization;political economy of attention;re-enchantment

Fear and Loathing of the Corruption Perception Index: Does Transparency International Penalize Press Freedom?

Depuis que la gouvernance compte, l’Indice de perception de la corruption construit par Transparency International (TI) est devenu l’indicateur le plus influent dans son domaine. Chaque année, un classement est ainsi établi, pointant du doigt les pays perçus comme les plus corrompus par les experts de TI. Cet indice est un outil puissant de lutte contre le fléau de la corruption, permettant effectivement de mettre une réelle pression politique sur des régimes « mal gouvernés ». L’influence de ce classement sur l’économie des pays concernés peut être importante, rendant parfois plus difficile l’accès aux financements, qu’il s’agisse de l’aide internationale ou des investissements directs étrangers. Bien souvent, il s’agit d’une double peine pour des populations déjà victimes au quotidien de services publics gangrenés par la corruption et le clientélisme. La mesure de la corruption, à l’image des différents outils mis en place pour évaluer la gouvernance, est une mesure qualitative, issue de perceptions. Comme toute perception, elle est sujette à la disponibilité de l’information et subit l’influence des médias. Nos analyses ont montré que le niveau de liberté de la presse pouvait avoir une influence importante sur ces perceptions, pénalisant les jeunes démocraties et l’ouverture progressive des médias. Transparency International’s annual Corruption Perception Index (CPI) has become the single most effective advocacy tool in the global fight against fraud, embezzlement and other abuses of public office for private gain. Countries relegated to the bottom tier of the CPI rankings are not only embarrassed (usually), but penalized financially, as the stigma makes it harder to secure aid and investment. For any multilateral loan officer or multinational plant-siting team, checking a country’s CPI rating is now basic due diligence. As well it should be: Corruption is a development scourge, acting as a stubborn brake on growth, a regressive tax on the poor, and - often - a corrosively effective enemy of democratization. Corruption assessment, not unlike governance assessment tools, is qualitative and the result of perceptions. Therefore, it suffers from the influence of information availability and media freedom. Our analysis, demonstrated that the media freedom extent may have a strong influence on corruption perceptions, penalizing young democracies and progressive media aperture.(Full text in french)

Fine-scale mapping of vector habitats using very high resolution satellite imagery : a liver fluke case-study

The visualization of vector occurrence in space and time is an important aspect of studying vector-borne diseases. Detailed maps of possible vector habitats provide valuable information for the prediction of infection risk zones but are currently lacking for most parts of the world. Nonetheless, monitoring vector habitats from the finest scales up to farm level is of key importance to refine currently existing broad-scale infection risk models. Using Fasciola hepatica, a parasite liver fluke as a case in point, this study illustrates the potential of very high resolution (VHR) optical satellite imagery to efficiently and semi-automatically detect detailed vector habitats. A WorldView2 satellite image capable of <5m resolution was acquired in the spring of 2013 for the area around Bruges, Belgium, a region where dairy farms suffer from liver fluke infections transmitted by freshwater snails. The vector thrives in small water bodies (SWBs), such as ponds, ditches and other humid areas consisting of open water, aquatic vegetation and/or inundated grass. These water bodies can be as small as a few m(2) and are most often not present on existing land cover maps because of their small size. We present a classification procedure based on object-based image analysis (OBIA) that proved valuable to detect SWBs at a fine scale in an operational and semi-automated way. The classification results were compared to field and other reference data such as existing broad-scale maps and expert knowledge. Overall, the SWB detection accuracy reached up to 87%. The resulting fine-scale SWB map can be used as input for spatial distribution modelling of the liver fluke snail vector to enable development of improved infection risk mapping and management advice adapted to specific, local farm situations

Biodiversity As An Ecological Safety Condition. The European Dimension

The main purpose of the paper is to indicate the theoretical bases of biodiversity protection from the perspective of the natural and economic sciences, and to describe the diversity of biodiversity protection levels in the EU states. A specific aim is to indicate the forms and instruments of nature conservation involved in biodiversity protection, and to carry out an overview of established nature conservation programmes in selected EU countries. In order to accomplish such a complex aim, this article presents an overview of literature found in the natural, economic and legal sciences and popular magazines presenting scientific research within the field of biodiversity. Then a comparative analysis is presented based on the statistical data coming from various international statistics resources (OECD, EUROSTAT, EEA)

A virtual environment for the design and simulated construction of prefabricated buildings

The construction industry has acknowledged that its current working practices are in need of substantial improvements in quality and efficiency and has identified that computer modelling techniques and the use of prefabricated components can help reduce times, costs, and minimise defects and problems of on-site construction. This paper describes a virtual environment to support the design and construction processes of buildings from prefabricated components and the simulation of their construction sequence according to a project schedule. The design environment can import a library of 3-D models of prefabricated modules that can be used to interactively design a building. Using Microsoft Project, the construction schedule of the designed building can be altered, with this information feeding back to the construction simulation environment. Within this environment the order of construction can be visualised using virtual machines. Novel aspects of the system are that it provides a single 3-D environment where the user can construct their design with minimal user interaction through automatic constraint recognition and view the real-time simulation of the construction process within the environment. This takes this area of research a step forward from other systems that only allow the planner to view the construction at certain stages, and do not provide an animated view of the construction process