Practice makes the model: a critical review of stormwater green infrastructure modelling practice

Green infrastructures (GIs) have in recent decades emerged as sustainable technologies for urban stormwater management, and numerous studies have been conducted to develop and improve hydrological models for GIs. This review aims to assess current practice in GI hydrological modelling, encompassing the selection of model structure, equations, model parametrization and testing, uncertainty analysis, sensitivity analysis, the selection of objective functions for model calibration, and the interpretation of modelling results. During a quantitative and qualitative analysis, based on a paper analysis methodology applied across a sample of 270 published studies, we found that the authors of GI modelling studies generally fail to justify their modelling choices and their alignments between modelling objectives and methods. Some practices, such as uncertainty analysis, were also found to be limited, despite their necessity being widely acknowledged by the scientific community and their application in other fields. In order to improve current GI modelling practice, the authors suggest the following: i) a framework, called STAMP, designed to promote the standardisation of the documentation of GI modelling studies, and ii) improvements in modelling tools for facilitating good practices, iii) the sharing of data for better model testing, iv) the evaluation of the suitability of hydrological equations for GI application, v) the publication of clear statements regarding model limitations and negative results.publishedVersio

The First Four Years (2007-2010) and Beyond - Volume 1: Research Program and Activity Report

83 pagesThis document presents the LIG in two parts. The first part (Volume 1) presents three aspects of the LIG: (1) organisation, (2) results obtained in the first four-year period, and (3) the scientific projects for the next five years. The second part (Volume 2) presents the 23 teams of the laboratory

The First Four Years (2007-2010) and Beyond - Volume 1: Research Program and Activity Report

83 pagesThis document presents the LIG in two parts. The first part (Volume 1) presents three aspects of the LIG: (1) organisation, (2) results obtained in the first four-year period, and (3) the scientific projects for the next five years. The second part (Volume 2) presents the 23 teams of the laboratory

The Asian side of the world

Asia and the Pacific, an immense region, both new and old, in which two thirds of the world lives. A region of superlatives, exceptions, China, continually facing disasters and risks from its past, India, a continent of its own, Japan, archipelago of the future. It is a region that is attracting global growth and becoming the centre of the world. Who could have predicted that the GDP of Asia and the Pacific would be equal to that of the European Union? And what will tomorrow bring? This compilation gives an overview of Asia's world, bringing together roughly a hundred texts written by researchers and specialists and that have been published on Asia and the Pacific Network's website (CNRS/FMSH) between 2002 and 2011. These works covering the humanities and social science recount the past, tell us of the future and illustrate the complexity of Asia and the Pacific through its flaws, strengths and challenges. They reveal the profound roots and depth of the dynamism of these new powers that could soon take over the future of humanity. Numerous researchers and academics specialising in contemporary Asia and the Pacific are bringing into light many aspects of this great and inevitable shift in the world

L'eau à découvert

Indispensable à la régulation du climat, au développement de la vie sur Terre, au maintien des écosystèmes, aux populations, au développement de l'agriculture, de l'industrie comme à la production d'énergie, l'eau est un élément vital. Il convient donc, dans un contexte de changement global, d'analyser dans toute sa diversité la place et le rôle de l'eau et de se donner ainsi les moyens de mieux la préserver. Autour de cet enjeu qui engage toute l'humanité, Agathe Euzen, Catherine Jeandel et Rémy Mosseri ont réuni près de cent cinquante contributions, visant à apporter un éclairage sur chacun des domaines et des approches que couvre cette thématique. Quelle est l'origine de l'eau ? Son rapport avec l'apparition de la vie ? Quel rôle a-t-elle joué dans l'histoire de la planète et dans le développement de la vie végétale, animale et humaine ? Quel est son cycle ? Quelles sont ses propriétés chimiques ? Comment les sociétés se sont-elles emparées de cet élément précieux ? Allons-nous manquer d'eau ? L'eau est-elle source de conflits ? Comment l'eau est-elle gérée ? Comment recycle-t-on une eau polluée ? Quels sont les risques pour la santé mondiale ? Quels sont les grands enjeux liés à l'eau au xxie siècle ? Comprendre et proposer des solutions à ces défis majeurs est l'intention de cet ouvrage

De l’âge du Bronze à l’âge du Fer en France et en Europe occidentale (Xe-VIIe siècle av. J.-C.)

Les actes du XXXe colloque de l’Association Française pour l’Étude de l’Âge du Fer (A.F.E.A.F.) - Saint-Romain-en-Gal, 2006 - rassemblent en un seul volume les 16 communications du thème régional et les 28 du thème spécialisé, co-organisé avec l’Association pour la Promotion des Recherches sur l’âge du Bronze (A.P.R.A.B.). La question du territoire est la trame de fond de la partie régionale, suscitée par le dynamisme et les résultats de l’archéologie à Lyon et dans la région (du Mâconnais à la Loire et aux Alpes). Cette question est abordée par l’examen des sources écrites, d’utiles synthèses et la présentation de sites remarquables, en contexte d’habitat ou funéraire. L’enjeu du thème spécialisé était s’éclaircir la difficile question du passage de l’âge du Bronze à l’âge du Fer. Comment cerner les signes du changement, l’expliquer, en saisir le moment ? La plupart des auteurs ont choisi une fourchette chronologique large et se sont placés dans l’optique d’une évolution d’ordre endogène. Le critère du métal n’apparaît pas comme le plus pertinent. La fragmentation des faciès céramiques, la rupture de l’unité culturelle prévalant entre le XIIe et le VIIe siècles, des comportements nouveaux constatés dans les habitats et les pratiques funéraires : la situation est contrastée dans une Europe étudiée ici avec des exemples allant de l’Espagne à l’Italie, de la Grande-Bretagne à la Bohême.So dynamic was archaeology in Lyon and its surrounding region (Macon, the Loire Country and the Alps), that focus was kept on regional topics and that the question of «territory» was kept as the main line of research. The question has been tackled from many angles: written sources, enlightening summaries and synthetized works, presentation of quite remarkable sites, whether settlement sites or burial sites. The whole point was to shed light on the transitional phase between the Bronze Age and the Iron Age. What are the signs of a change, how to explain them, how to pinpoint them? Most scientists have led their research on a fairly large time span, always in the perspective of an endogenous evolution. The metal criterion do not come up as the most relevant factor anymore. Differenciation in pottery groups and disruption in the cultural cohesion prevail between the XIIthand the VIIth centuries. New practices arise in settlement patterns as well as funeral rites: the situation in Europe here under study, is richly contrasted and documented with case studies coming from a zone spreading from Spain to Italy, from Great Britain to Bohemia. The records of the 30th «A.F.E.A.F., Association Française pour l’Étude de l’Âge du Fer» ’symposium - Saint-Romain en Gal, 2006 - gather in one single volume the 16 papers on regional issues, as well as 28 papers on more specific issues, organized in collaboration with the Association pour la Promotion des Recherches sur l’âge du Bronze (A.P.R.A.B.)

Management of renal replacement therapy among adults in French intensive care units: A bedside practice evaluation

International audienceBackgroundThis study aimed to investigate renal replacement therapy (RRT) practices in a representative nationwide sample of French intensive care units (ICUs).MethodsFrom July 1 to October 5 2021, 67 French ICUs provided data regarding their ICU and RRT implementation. We used an online questionnaire to record general data about each participating ICU, including the type of hospital, number of beds, staff ratios, and RRT implementation. Each center then prospectively recorded RRT parameters from 5 consecutive acute kidney injury (AKI) patients, namely the indication, type of dialysis catheter used, type of catheter lock used, type of RRT (continuous or intermittent), the RRT parameters initially prescribed (dose, blood flow, and duration), and the anticoagulant agent used for the circuit.ResultsA total of 303 patients from 67 ICUs were analyzed. Main indications for RRT were oligo-anuria (57.4%), metabolic acidosis (52.1%), and increased plasma urea levels (47.9%). The commonest insertion site was the right internal jugular (45.2%). In 71.0% of cases, the dialysis catheter was inserted by a resident. Ultrasound guidance was used in 97.0% and isovolumic connection in 90.1%. Citrate, unfractionated heparin, and saline were used as catheter locks in 46.9%, 24.1%, and 21.1% of cases, respectively.ConclusionsPractices in French ICUs are largely compliant with current national guidelines and international literature. The findings should be interpreted in light of the limitations inherent to this type of study

Effects of climate and atmospheric nitrogen deposition on early to mid-term stage litter decomposition across biomes

International audienceLitter decomposition is a key process for carbon and nutrient cycling in terrestrial ecosystems and is mainly controlled by environmental conditions, substrate quantity and quality as well as microbial community abundance and composition. In particular, the effects of climate and atmospheric nitrogen (N) deposition on litter decomposition and its temporal dynamics are of significant importance, since their effects might change over the course of the decomposition process. Within the TeaComposition initiative, we incubated Green and Rooibos teas at 524 sites across nine biomes. We assessed how macroclimate and atmospheric inorganic N deposition under current and predicted scenarios (RCP 2.6, RCP 8.5) might affect litter mass loss measured after 3 and 12 months. Our study shows that the early to mid-term mass loss at the global scale was affected predominantly by litter quality (explaining 73% and 62% of the total variance after 3 and 12 months, respectively) followed by climate and N deposition. The effects of climate were not litter-specific and became increasingly significant as decomposition progressed, with MAP explaining 2% and MAT 4% of the variation after 12 months of incubation. The effect of N deposition was litter-specific, and significant only for 12-month decomposition of Rooibos tea at the global scale. However, in the temperate biome where atmospheric N deposition rates are relatively high, the 12-month mass loss of Green and Rooibos teas decreased significantly with increasing N deposition, explaining 9.5% and 1.1% of the variance, respectively. The expected changes in macroclimate and N deposition at the global scale by the end of this century are estimated to increase the 12-month mass loss of easily decomposable litter by 1.1– 3.5% and of the more stable substrates by 3.8–10.6%, relative to current mass loss. In contrast, expected changes in atmospheric N deposition will decrease the mid-term mass loss of high-quality litter by 1.4–2.2% and that of low-quality litter by 0.9–1.5% in the temperate biome. Our results suggest that projected increases in N deposition may have the capacity to dampen the climate-driven increases in litter decomposition depending on the biome and decomposition stage of substrate