Bibliografie tematiche / Indice composite

Letteratura scientifica selezionata sul tema "Indice composite"

Autore: Grafiati

Pubblicato: 1 giugno 2024

Ultima modifica: 22 giugno 2024

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Articoli di riviste sul tema "Indice composite":

Lamia, B., L. C. Molano, C. Viacroze, A. Cuvelier e J. F. Muir. "Pertinence d’un indice composite échocardiographique pour améliorer le dépistage de l’hypertension pulmonaire". Revue des Maladies Respiratoires 31 (gennaio 2014): A26. http://dx.doi.org/10.1016/j.rmr.2013.10.070.

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Sjahriza, Ahmad, Zainal Alim Mas’ud e Komar Sutirah. "Mechanical and Barrier Properties of PVP-Carbon Dot Nanocomposite Films". Jurnal Kimia Terapan Indonesia 20, n. 2 (28 gennaio 2019): 49–56. http://dx.doi.org/10.14203/jkti.v20i2.392.

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This research reported carbon dot were synthesized form citric acid and urea through a single step microwave process and Poly Vinyl Pirrolidone (PVP) films composited by carbon dot were prepared. The effects of different composition carbon dots on mechanical strength of films and water vapour barrier were evaluated. Highest mechanical yielded composite film were analyzed their thermal stability. Average of carbon dot diameter was found 90.61 nm and polydispersity indice 0.396. Different composition carbon dot exhibit significant improvement in tensile strength and modulus. Water permeablity of films varieate with content of carbon dot. The presence of carbon dot had a negligible effect on Tg of film and show melting process.

Gaujoux-Viala, Cécile, Gaël Mouterde, Athan Baillet, Pascal Claudepierre, Bruno Fautrel, Alain Cantagrel, Philippe Gaudin et al. "Évaluation de l’activité de la polyarthrite rhumatoïde, quel indice composite faut-il utiliser ?" Revue du Rhumatisme 76 (dicembre 2009): S3—S10. http://dx.doi.org/10.1016/s1169-8330(09)72764-4.

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Bouffard1, Léandre, e Micheline Dubé. "L’inégalité de revenus : un « virus » qui affecte la santé mentale et le bonheur". Mosaïque 38, n. 2 (21 marzo 2014): 215–33. http://dx.doi.org/10.7202/1023997ar.

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L’objectif du présent texte est de démontrer les effets de l’inégalité de revenus sur la santé mentale et le bonheur dans les pays riches. La première section fait état du niveau élevé d’inégalité de revenus aux États-Unis et, à un degré moindre, dans les autres pays riches. Les résultats présentés dans la seconde partie font voir des corrélations positives de l’inégalité de revenus avec la maladie mentale, avec un indice de consommation de drogues et avec un indice composite de 10 problèmes psychosociaux. De plus, il existe une corrélation négative entre l’inégalité de revenus et un indice de bien-être des enfants mis au point par l’UNICEF. La troisième partie aborde l’association négative élevée entre l’inégalité de revenus et le bonheur, concrétisée ici par la satisfaction de vivre, dans les pays riches. De nombreux arguments appuient l’idée de la causalité selon laquelle l’inégalité de revenus est une source importante des problèmes psychosociaux, comme un « virus » qui affecte le bien-être de toute la population. Enfin, les praticiens des sciences humaines sont invités à s’impliquer dans l’élaboration des politiques sociales, dans les efforts d’éducation pour contrer les coûts de l’inégalité et dans des programmes susceptibles de favoriser une santé mentale « florissante ».

Jonnaert, Philippe, e Dany Laveault. "Évaluation de la familiarité de la tâche : quelle confiance accorder à la perception de l’élève?" Articles 20, n. 2 (10 ottobre 2007): 271–91. http://dx.doi.org/10.7202/031710ar.

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Résumé Notre étude s'inscrit dans le courant des recherches sur la perception de la tâche par rélève. Plus spécifiquement, nous avons cherché à déterminer si les élèves d'une même classe sont capables d'autoévaluer avec fidélité la familiarité d'une tâche qui leur est proposée. Les résultats obtenus confirment que les élèves s'entendent entre eux pour juger de la familiarité d'une situation didactique et que les indicateurs sur lesquels ils se prononcent sont suffisamment homogènes pour permettre le calcul d'un indice composite, le facteur K.

Guillaumin, Cyriac. "Zones monétaires optimales et (a)symétrie des chocs en Asie". Économie appliquée 61, n. 2 (2008): 121–51. http://dx.doi.org/10.3406/ecoap.2008.1880.

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L’objectif de cette étude est de montrer si l’Asie présente les caractéristiques d’une zone monétaire optimale (ZMO). Pour cela nous procédons de deux manières. (1) Nous construisons un indice composite de ZMO. (2) Nous analysons la volatilité des taux de change réels afin de définir la nature des chocs. Au vu de l’équation estimée, l’Asie remplirait les conditions d’une ZMO. La volatilité des taux de change réels fait, quant à elle, apparaître des chocs asymétriques. Nous montrons aussi que ces deux méthodes sont sujettes à discussion et qu’elles doivent être utilisées avec précaution.

Lucic, Nicolas, e Jean-François Hoarau. "Le statut politique des petites économies insulaires a-t-il une influence sur leurs performances de développement ?" Mondes en développement 204, n. 4 (4 gennaio 2024): 17–34. http://dx.doi.org/10.3917/med.204.0017.

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L’objectif de cet article est de comparer les performances macroéconomiques de développement d’un ensemble de 80 petits territoires insulaires à l’aune de leur statut politique et du degré de souveraineté atteint. Nous construisons quatre profils institutionnels (intégration complète, autonomie, souveraineté limitée et souveraineté totale) à partir d’un indice composite modifié de souveraineté proposé par Alberti et Goujon (2020). Ensuite, nous réalisons des tests de comparaison de moyenne sur 26 critères. Au final, nous trouvons que les dépendances insulaires autonomes sont plus économiquement développées, socialement avancées et matures sur le plan démographique que les autres groupes institutionnels. Classification JEL : O11, O57, P51

Wister, Andrew, Theodore Cosco, Barbara Mitchell, Verena Menec e Ian Fyffe. "Development and Concurrent Validity of a Composite Social Isolation Index for Older Adults Using the CLSA". Canadian Journal on Aging / La Revue canadienne du vieillissement 38, n. 02 (11 gennaio 2019): 180–92. http://dx.doi.org/10.1017/s0714980818000612.

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RÉSUMÉL’isolement social a retenu l’attention des chercheurs, en particulier dans la recherche concernant les personnes âgées, étant donné les corrélations établies avec la mortalité et le risque de mauvaise santé physique ou mentale. Toutefois, les mesures utilisées jusqu’à maintenant pour l’isolement social ont grandement varié et manquent souvent de clarté conceptuelle. La présente étude s’appuie sur un cadre conceptuel de classification des mesures d’isolement social et explique l’élaboration et la validation d’un indice composite d’isolement social (ELCV-SII) qui a été créé en utilisant les données de l’Étude longitudinale canadienne sur le vieillissement (ELCV). L’échantillon de l’ELCV incluait 21 491 Canadiens âgés de 65 ans ou plus (âge moyen : 72,9 ans; à 53,5 % de sexe féminin) retrouvés dans les données de base des cohortes de suivi et de la cohorte globale de l’ELCV (n = 51 338). Le CLSA-SII a été élaboré en utilisant une méthodologie standard, qui a été suivie pour la création d’autres mesures, dont la résilience à la multimorbidité et les indices de vieillissement efficaces. Les associations entre l’ELCV-SII et quatre variables clés (échelle de satisfaction de vie, dépression, santé mentale perçue et santé perçue) ont été évaluées par des analyses de régression, en tenant compte de l’âge, du sexe, du revenu et de la scolarité. Les associations entre l’indice CLSA-SII et les quatre variables d’intérêt ont donné lieu à des associations modérées statistiquement significatives conformes à la tendance prévue, qui concordent avec les recherches antérieures, ce qui démontre une bonne validité convergente pour l’ELCV-SII.

Carbonara, Pierluigi, Teresa Silecchia, Maria Spedicato, Alessandra Acrivulis e Giuseppe Lembo. "A GEOSTATISTICAL APPROACH TO THE ASSESSMENT OF THE SPATIAL DISTRIBUTION OF PARAPENAEUS LONGIROSTRIS (LUCAS, 1846) IN THE CENTRAL-SOUTHERN TYRRHENIAN SEA". Crustaceana 72, n. 9 (1999): 1093–108. http://dx.doi.org/10.1163/156854099504040.

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AbstractThe spatial distribution of the abundance indices of the deep-water rose shrimp Parapenaeus longirostris was investigated applying geostatistical techniques on data collected in the central southern Tyrrhenian Sea from bottom trawl surveys carried out in the autumn since 1994. Experimental variograms (auto and cross) were constructed on the variable "abundance index", expressed in kg/km2, and those variogram models best describing the spatial continuity were detected and validated by the jackknife technique. The spatial structure of the "abundance index", exhibiting a similar pattern throughout the surveys, was described by a spherical model and characterized by a spatial continuity at a small scale level in the whole area. The linear geostatistical approach was applied by different kriging techniques and the estimates extended to the spatio-temporal dimension, in this case adopting the co-regionalized models and applying the cokriging technique. This method applied to the spatial dimension (abundance index and depth). Also, linking the spatial and temporal dimension of the abundance indices, measured in two different years, contributed to represent a more accurate picture of the abundance distribution, and allowed the detection of a temporal persistence of the localization of areas with higher abundance, reducing the standard deviation of the estimation error. This information, if coupled with an analysis of the geographical allocation of the fishing effort, could be of importance in stock assessment, allowing some variant application of the composite surplus production models. La distribution spatiale des indices d'abondance de la crevette rose d'eau profonde Parapenaeus longirostris a ete etudiee en appliquant les techniques de la geostatistique aux donnees collectees dans le centre-sud de la mer Tyrrhenienne au cours des campagnes de chalutage demersal realisees pendant l'automne, depuis 1994. Les variogrammes experimentaux (auto et cross) ont ete construits sur la variable "indice d'abondance", exprimee en kg/km2, et les modeles de variogramme decrivants le mieux la continuite spatiale ont ete determines et valides par la technique du "jackknife". La structure spatiale de l'indice d'abondance a presente le meme aspect pour tous les echantillonages; elle a ete decrite au moyen d'un modele spherique et caracterisee par une continuite spatiale a petite echelle dans toute la zone. La geostatistique lineaire a ete appliquee en utilisant differentes techniques du krigeage, et les estimations ont ete etendues a la dimension spatio-temporelle en appliquant les modeles coregionalises et la technique du cokrigeage. Cette methode, appliquee soit dans la dimension spatiale (indice d'abondance et profondeur), soit dans la dimension spatio-temporelle en considerant l'indice d'abondance echantillonne en deux annees differentes, a contribue a representer une image plus precise de la distribution de l'abondance, et a permis de detecter une persistance temporelle de la localisation des aires a plus grande abondance, en reduisant l'ecart type de l'erreur d'estimation. Cette information, avec l'analyse de l'allocation geografique de l'effort de peche, pourrait etre importante dans l'evaluation des stocks, en permettant l'application, avec quelques variantes, des modeles composites de production.

Garnier, P., B. Tran, V. Salomon e V. Drouvot. "P4-1 - Élaboration d’un indice composite des activités de lutte contre les infections nosocomiales dans les établissements de santé : ICALIN". Revue d'Épidémiologie et de Santé Publique 54 (agosto 2006): 73. http://dx.doi.org/10.1016/s0398-7620(06)76903-6.

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Più fonti

Tesi sul tema "Indice composite":

Barichard, Anne. "Enregistrement et analyses physico-chimiques de réseaux dans des matériaux composites polymères-points quantiques". Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28504/28504.pdf.

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Booysen, Frederik Le Roux. "The measurement of economic development : alternative composite indices". Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51995.

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Thesis (PhD)--Stellenbosch University, 2000.
ENGLISH ABSTRACT: The success of policies aimed at economic development cannot be monitored and evaluated without development indicators. These indicators are also crucial in comparing levels of development across time and space so as to come a greater understanding of the development process. Yet, economic development does not mean the same thing to everyone. As a result, there exists a variety of indicators of economic development. Five main classes of development indicators are distinguished on the basis of the shift over time in our understanding of economic development (Chapter 1). A distinction is drawn between indicators of national income and economic growth (Chapter 3), employment, unemployment and underemployment (Chapter 4), and poverty and inequality (Chapter 5). Social indicators (Chapter 6) and composite indices (Chapter 7) of economic development represent two futher classes of development indicators. These indicators differ in terms of their content, method and technique, comparative application, simplicity, clarity, focus, availability and flexibility. These main classes of development indicators are evaluated with reference to these dimensions of measurement which are described in detail in Chapter 2. There is no one indicator that can be described as an ideal, all encompassing measure of economic development, at least not in terms of its performance on these dimensions of measurement. Hence, the measurement of development remains imperfect, but nonetheless makes an invaluable contribution to the study of economic development. In fact, development studies will be impossible without access to such a variety of development indicators. Given the importance of development indicators in development studies, two new composite indices of development are presented here to address two specific gaps in indicator research. Indices of Human Security (HSIs) and Inefficiency ratios are developed to determine the extent to which countries have made progress on human security as defined by the UNDP (Chapter 8). Progress is assessed in terms of both effort and outcomes, as well as the extent to which efforts are actually translated into outcomes. Indices of Reconstruction and Development (RDIs) are employed to measure the extent to which the nine provinces of South Africa have made progress on the development objectives described in the Reconstruction and Development Programme (RDP) (Chapter 9). The measurement results suggest that there remain substantial disparities in progress on both human security and reconstruction and development. These new composite indices are also employed to determine those development characteristics associated with progress on human security and reconstruction and development. So, for example, disparities in human security are associated with certain urban and population dynamics, as well as communications capacity and infrastructural development. Progress on reconstruction and development is associated with lower population pressure, higher matric pass rates, less poverty and inequality, and more political representativeness at the provincial level. The RDIs also underscore the extent to which progress on the RDP has not materialised in rural areas. Furthermore, current provincial disparities in progress on reconstruction and development appear still to be indicative of the racial dynamics of development so characteristic of the Apartheid era.
AFRIKAANSE OPSOMMING: Dit is onmoontlik om sonder ontwikkelingsindikatore die sukses van beleid wat gemik is op ekonomiese ontwikkeling te moniteer of te evalueer. Ontwikkelingsindikatore IS ook onontbeerlik III die vergelyking van ontwikkelingsvlakke oor tyd en ruimte om sodoende 'n beter begrip van die ontwikkelingsproses te verkry. Ekonomiese ontwikkeling het egter nie dieselfde betekenis vir almal nie. Gevolglik bestaan daar 'n verskeidenheid van ontwikkelingsindikatore. Vyf hoofklasse van ontwikkelingsindikatore word onderskei op grond van verskuiwings oor tyd in die interpretasie van ekonomiese ontwikkeling (Hoofstuk 1). 'n Onderskeid word getref tussen maatstawwe van nasionale inkome en ekonomiese groei (Hoofstuk 3), indiensname, werkloosheid en onderindiensname (Hoofstuk 4), en armoede en ongelykheid (Hoofstuk 5). Sosiale indikatore (Hoofstuk 6) en saamgestelde indekse (Hoofstuk 7) van ekonomiese ontwikkeling verteenwoordig twee verdere groepe indikatore. Hierdie indikatore verskil in terme van hul inhoud, metode en tegniek, vergelykende toepassing, eenvoud, duidelikheid, fokus, beskikbaarheid en buigsaamheid. Hierdie hoofklasse van ontwikkelingsindikatore word geëvalueer met verwysing na hierdie dimensies van meting, wat in groter besonderhede in Hoofstuk 2 bespreek word. Daar is nie een indikator wat beskryfkan word as 'n ideale, allesomvattende maatstafvan ekonomiese ontwikkeling nie, ten minste nie in terme van die prestasie daarvan op hierdie dimensies van meting nie. Gevolglik is die meting van ekonomiese ontwikkeling onvolmaak, alhoewel dit 'n onskatbare bydrae lewer tot die studie van ekonomiese ontwikkeling. Om die waarheid te sê, ontwikkelingstudies salonmoontlik wees sonder toegang tot so 'n verskeidenheid van ontwikkelingsindikatore. Gegewe die belangrikheid van ontwikkelingsmaatstawwe In ontwikkelingstudies, word twee nuwe saamgestelde indekse hier aangebied om twee spesifieke gapings in navorsing oor ontwikkelingsmaatstawwe aan te spreek. Indekse van Menslike Sekuriteit (MSls) en Ondoeltreffendheidsratio's word ontwikkelom te bepaal tot watter mate lande vordering gemaak het in menslike sekuriteit, soos definieer deur die UNDP (Hoofstuk 8). Vordering word gemeet in terme van sowel pogings en uitkomste as die mate waartoe pogings werklik in uitkomste omskep word. In Hoofstuk 9 word Indekse van Heropbou en Ontwikkeling (HOIs) gebruik om te meet tot watter mate die nege provinsies in Suid-Afrika vordering gemaak het in die bereiking van die ontwikkelingsdoelwitte wat uitgespel word in die Heropbou- en Ontwikkelingsprogram (HOP). Die metingsresultate dui daarop dat daar wesenlike ongelykhede bestaan in beide menslike sekuriteit en heropbou en ontwikkeling. Hierdie nuwe saamgestelde indekse word ook gebruik om te bepaal met watter ontwikkelingskenmerke ongelykhede in menslike sekuriteit en heropbou en ontwikkeling geassosieer word. So, byvoorbeeld, toon dispariteite in menslike sekuriteit 'n verband met sowel stedelike en bevolkingsdinamika as kapasiteit in kommunikasie en infrastruktuur. Vordering in heropbou en ontwikkeling word ook geassosieer met laer bevolkingsdruk, beter matrikulasieresultate, minder armoede en inkomste-ongelykheid, en wyer politieke verteenwoordiging op provinsiale vlak. Die indekse beklemtoon ook die mate waartoe vordering met die HOP nog nie in landelike gebiede gematerialiseer het nie. Verder wil dit voorkom asof huidige provinsiale ongelykhede in vordering met heropbou en ontwikkeling steeds kenmerkend is van die rasse-dinamika agter ontwikkeling wat so kenmerkend was van die Apartheidsera.

Bouhadj, Laakri. "Développement d'outils de gestion pour la prise en compte des enjeux de santé dans les opérations d'aménagement urbain : atténuation des vulnérabilités et renforcement de la résilience des systèmes territoriaux". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILS046.

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La conception de nos villes et régions est déterminante pour notre santé et bien-être. Elle impacte notamment la qualité de notre cadre de vie, de l'air que nous respirons, de l'eau que nous buvons, notre accès aux espaces verts, aux services de santé et aux opportunités d'emplois (OMS & ONU, 2021). En effet, notre santé est influencée par de nombreux facteurs qui dépassent le simple domaine de la pathologie. L'enjeu de cette thèse est de développer un outil d'aide à la décision dont les acteurs locaux pourront se saisir pour une meilleure prise en compte de la santé dans les plans, documents et projets d'urbanisme et d'aménagement.Le premier objectif de la thèse est de caractériser les Inégalités Environnementales et Sociales de Santé (IESS) à l'échelle infra-communale sur le périmètre du Schéma de Cohérence Territoriale (SCoT) de la Métropole Européenne de Lille (MEL). Une revue de la littérature ainsi que des ateliers thématiques avec des acteurs locaux et régionaux ont été organisés et un cadre méthodologique a été proposé pour la construction d'indices composites spatialisés de vulnérabilité et de résilience. De plus, une méthodologie d'analyse des profils des catégories de territoires, résultant de l'interprétation conjointe des deux indices, a été développée.Le second objectif est d'accompagner et de favoriser la prise en compte des enjeux de santé dans les projets d'aménagement urbain en proposant une approche expérimentale appliquée sur deux projets d'aménagement. L'analyse approfondie des enjeux de santé environnementale dans les deux quartiers, ainsi que la contribution du groupe de travail composé des deux équipes de projet et les observations sur le terrain, ont permis de mieux comprendre les facteurs de vulnérabilité et de résilience présents dans ces quartiers. Cela a également permis d'évaluer l'impact du projet d'aménagement sur ces quartiers et de proposer une modélisation théorique des perspectives d'amélioration pour les deux propositions d'aménagement.Les résultats obtenus mettent en évidence l'importance de prendre en compte non seulement les facteurs de vulnérabilité et de résilience des territoires dans l'analyse de IESS, mais également la dimension spatiale. La division du SCoT en zones homogènes faciliterait la compréhension de la dynamique des IESS à une échelle fine. L'exploitation des indices composites à l'échelle d'un projet d'aménagement met en évidence la question de la transversalité et de l'impact de toutes les dimensions impliquées. À cette échelle, les indices composites permettent d'avoir une vision globale des enjeux au sein d'un quartier, ils soulèvent également les limites des politiques d'aménagement pour la réduction des IESS
The design of our cities and regions is crucial for our health and well-being. It notably impacts the quality of our living environment, the air we breathe, the water we drink, our access to green spaces, healthcare services, and employment opportunities (OMS & ONU, 2021). Indeed, our health are influenced by numerous factors that go beyond the scope of pathology alone. The focus of this thesis is to develop a decision support tool that local actors can use to better consider health in urban planning and development plans, documents, and projects.The first objective of the thesis is to characterize the environmental and social health inequalities (ESHI) at the sub-municipal level within the perimeter of the European metropolis of Lille's Territorial Coherence Scheme. A literature review and thematic workshops involving local and regional stakeholders were organized, and a methodological framework was proposed for constructing spatialized composite indices of vulnerability and resilience. Furthermore, a methodology for analyzing the profiles of territory categories resulting from the joint interpretation of the two indices was developed.The second objective is to support and promote the consideration of health issues in urban development projects by proposing an experimental approach applied to two development projects. The in-depth analysis of environmental health issues in the two neighborhoods, along with the contribution of the working group composed of the two project teams and field observations, helped to better understand the factors of vulnerability and resilience present in these neighborhoods. It also enabled the evaluation of the impact of the development project on these neighborhoods and the proposal of a theoretical modeling of improvement prospects for the two development proposals.The obtained results highlight the importance of considering not only the vulnerability and resilience factors of territories but also the spatial dimension. Dividing the European metropolis of Lille's Territorial Coherence Scheme into homogeneous zones would facilitate understanding the dynamics of ESHI at a fine scale. The use of composite indices at the scale of a development project brings to light the issue of transversality and the impact of all involved dimensions. At this scale, composite indices provide an overall vision of the issues within a neighborhood, they also reveal the limitations of development policies for reducing ESHI

Căbuz, Alexandru Ioan. "Métamatériaux Electromagnétiques - Des Cristaux Photoniques aux Composites à Indice Négatif". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00161428.

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Composite metamaterials are periodic metal-dielectric structures operating at wavelengths larger than the structure period. If properly designed these structures behave as homogeneous media described by effective permittivity and permeability parameters. These effective parameters can be designed to take values in domains that are not available in naturally occurring media; notably it is possible to design composite metamaterials with simultaneously negative permittivity and permeability, or, in other words, with a negative refractive index. However, in many experimental or numerical studies it is far from obvious that the use of a homogeneous model is justified for a given structure at a given wavelength. This issue is often glossed over in the literature.
In this work I take a detailed look at the fundamental assumptions on which effective medium models rely and put forward a method for determining frequency domains where a given structure may or may not be accurately described by homogeneous effective medium parameters. This work opens the door to a more detailed understanding of the transition between homogeneous and inhomogeneous behavior in composite metamaterials, in particular by introducing the novel notions of custom made effective medium model, and of meta-photonic crystal.

Lancaster, Gillian. "The use of socio-economic indices in assessing risk factors for ill-health". Thesis, Lancaster University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246129.

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Parker, Bhawoodien Abbasmia. "Composite structure of tropical cyclones in the SW Indian Ocean". Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/19524.

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This work examines SW Indian Ocean tropical cyclone (TC) structure as a function of movement using ECMWF gridded data. Analyses of the mean summer climate for the period 1987 1992 shown that conditions conducive to the development ofTCs are present between the latitudes 5° and 15°S. Six westward moving TCs are selected to form the westward moving composite TC and four are used in the recurving TC composite from 3-days before the maximum surface intensity to 1 day after. The westward moving composite was found to have a steady TC signature. Comparisons were made with TC Firinga which passed near Mauritius on 29 January 1989. The recurving TC composite was found to exhibit rapid growth with sharp parameters tendencies. Interaction with a sub tropical trough is seen in both TC composites. Upper level westerly winds create effective uplift which strengthens the recurving TC on the poleward side. Spectral analysis of a rainfall index compiled from Mauritius data demonstrates spectral peaks at the seasonal and intra-seasonal scale. Three peaks were identified. one within the 40-60 day Madden Julian Oscillation. one at 23 days and one with a 16 day oscillation. The 23 day oscillation was found to have a highest spectral power. The results of TC and rainfall analyses offer useful insights to the climate and weather of the SW Indian Ocean.

Cheung, Li Chien. "Mixture models for left- and interval-censored data and concordance indices for composite survival outcomes". Thesis, The George Washington University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10259297.

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For cost-effectiveness and efficiency, many large-scale general-purpose cohort studies are being assembled within health-care providers who use electronic health records. Two key features of such data are that incident disease is interval-censored between irregular visits and pre-existing (prevalent) disease is left-censored. Because prevalent disease is not always immediately diagnosed, some disease diagnosed at later visits are actually undiagnosed prevalent disease. I consider prevalent disease as a point mass at time zero for clinical applications where there is no interest in time of prevalent disease onset. I demonstrate that the naive Kaplan-Meier cumulative risk estimator underestimates risks at early time points and overestimates later risks. I propose a general family of mixture models that we call prevalence-incidence models. Parameters for parametric prevalence-incidence models, such as the logistic regression and Weibull survival (logistic-Weibull) model, are estimated by direct likelihood maximization or EM algorithm. Non-parametric methods are proposed to calculate cumulative risks for cases without covariates. I compare naive Kaplan-Meier, logistic-Weibull, and non-parametric estimates of cumulative risk in the cervical cancer screening program at Kaiser Permanente Northern California. Kaplan-Meier methods provided poor estimates while the logistic-Weibull model was a close fit to the non-parametric. My findings support use of logistic-Weibull models over Kaplan-Meier methods to develop risk estimates for informing U.S. risk-based cervical cancer screening guidelines. Harrell's c index is widely used to measure the accuracy in predicting univariate survival outcomes. However, survival outcomes relating to a disease of interest may show up in multiple endpoints of interest. I propose two extensions of Harrell's c index for composite survival outcomes that account for frequencies of occurrences and the severity/importance of the outcomes. A weighted C index is proposed for a disease process with multiple equally important endpoints, and a most severe comparable C index is proposed for a disease process with a rare primary outcome and a correlated secondary outcome. Asymptotic properties are derived based on theorems for U-statistics. In the simulation studies, my extensions gain efficiency and power in identifying true prognostic variables. I illustrate these novel concordance indices using the Epidemiology of Diabetes Intervention and Complications (EDIC) and the Diabetes Prevention Program (DPP) trials. In EDIC, the prognosis of diabetes patients at risk for multiple equally important microvascular complications are evaluated using the weighted C index. In DPP, patients with impaired glucose resistance (IGR) who may either progress to type II diabetes or regress to normal glucose resistance (NGR). The proposed most severe comparable index better evaluates the accuracy in predicting diabetes risk with the help of auxiliary NGR outcomes.

Vieaud, Julien. "Propriétés optiques effectives de films composites de polymère et de nanoparticules d’or". Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14349/document.

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Nous étudions, par ellipsométrie spectroscopique, les propriétés optiques dans le domaine de l'UV-Visible-Infrarouge de films composites constitués de polymère et de nanoparticules d'or. Nous étudions la relation entre ces mesures et la structure des nanocomposites, que nous étudions par microscopie à force atomique en particulier. Nous distinguons l’analyse de films épais (tri-dimensionnels) et minces (quasi-bidimensionnels). Dans les deux cas, nous confrontons les résultats expérimentaux à des modèles théoriques de milieux effectifs dérivés de Maxwell-Garnett, en particulier
By spectroscopic ellipsometry, we study the optical properties in the range of UV-Visible-Infrared of composites films made of polymer and gold nanoparticles. We study the relation between these measurement and the structure of the nanocomposites, that we study by atomic force microscopy in particular. We distinguish the analysis of thicks films (tridimensionals) and thins (quasi-bidimensionals). In both of case, we confronte these experimentals results to the theoric models of effectives medium derivated for Maxwell-Garnett in particular

Malassis, Ludivine. "Elaboration et caractérisation de films composites métal/diélectrique nanostructurés pour une application aux métamatériaux". Phd thesis, Université Sciences et Technologies - Bordeaux I, 2012. http://tel.archives-ouvertes.fr/tel-00806919.

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Les métamatériaux électromagnétiques sont des composites artificiels, constitués de résonateurs etayant des propriétés optiques n'existant pas à l'état naturel. Cette thèse est consacrée à lafabrication et caractérisation de tels matériaux. Pour cela des particules métalliques coeur-écorce(d'or ou d'argent enrobées de silice) sont assemblées par la technique de Langmuir-Blodgett afin deformer des réseaux denses en monocouche et en multicouches. Ces nanoparticules jouent le rôle derésonateurs grâce à la présence de la résonance plasmon et l'écorce de silice permet de contrôler ladistance entre particules. Nous avons ainsi réalisé des matériaux dont la distance entre lesrésonateurs et la fraction métallique varient. Les analyses spectro-photométriques des films obtenus,notamment en réflexion normale, nous ont permis d'extraire les propriétés optiques de nosmatériaux. Pour cela nous avons proposé un modèle phénoménologique dans lequel nousdéfinissons la permittivité de la couche effective comme étant celle de la matrice à laquelle s'ajouteun oscillateur de Lorentz décrivant la présence d'une résonance plasmon. Nous avons pu ainsimontrer expérimentalement qu'il était possible d'obtenir des métamatériaux d'indice de réfractioninférieur à 1 quand la fraction de métal dans le matériau est suffisamment importante.

Andrade, Mahecha Margarita Maria 1979. "Microcompósitos, nanocompósitos e coberturas a base de materiais biodegradáveis obtidos a partir do Biri (Canna indica L.)". [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256463.

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Orientadores: Florencia Cecilia Menegalli, Delia Rita Tapia Blácido
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
Made available in DSpace on 2018-08-20T05:16:21Z (GMT). No. of bitstreams: 1 AndradeMahecha_MargaritaMaria_D.pdf: 4721286 bytes, checksum: d81a0051c1f91a999e9ea8c3e9fe0b20 (MD5) Previous issue date: 2012
Doutorado
Engenharia de Alimentos
Doutor em Engenharia de Alimentos

Più fonti

Libri sul tema "Indice composite":

Heshmati, Almas. Alternative composite Lisbon development strategy indices. Bonn, Germany: IZA, 2005.

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R, Raghavendra Rao, e Botanical Survey of India, a cura di. Florae Indicae enumeratio-Asteraceae. Calcutta: Botanical Survey of India, 1988.

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Nagar, Shanti Lal. Composite deities in Indian art and literature. New Delhi: Criterion Publications, 1989.

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Hays, Ron D. Derivation of physical and mental health composite indices in the HIV outcomes study. Santa Monica, CA: RAND, 1997.

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S, Shukla K. Composite wood: Research and development. Dehra Dun: Indian Council of Forestry Research and Education, 1994.

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India) International Seminar on the Contributions of Tamils to the Composite Culture of Asia (2011 Chennai. Contributions of Tamils to the composite culture of Asia: A selection of articles presented during the International Seminar on the Contributions of Tamils to the Composite Culture of Asia, organized by the Institute of Asian Studies in January 2011. Chennai, India: Institute of Asian Studies, 2013.

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Hamm, Jim. Bows & arrows of the native Americans: A complete step-by-step guide to wooden bows, sinew-backed bows, composite bows, strings, arrows & quivers. Azle, Tex., USA: Bois D'Arc Press, 1989.

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Hamm, Jim. Bows & arrows of the native Americans: A complete step-by-step guide to wooden bows, sinew-backed bows, composite bows, strings, arrows & quivers. New York, NY: Lyons & Burford in cooperation with Bois d'Arc Press, 1991.

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Sinha, Rajiv K. Earthworm vermicompost: A sustainable alternative to chemical fertilizers for organic farming. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Nagar, Murari Lal. TEST: The eternal saga of TULIP, or, Composing a union list of serials in the computer age. Columbia, Mo: International Library Center, 1986.

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Capitoli di libri sul tema "Indice composite":

Bellamy, Nicholas. "Composite Indices". In Musculoskeletal Clinical Metrology, 135–46. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2218-4_14.

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Kunihiro, Noboru. "Quantum Factoring Algorithm: Resource Estimation and Survey of Experiments". In International Symposium on Mathematics, Quantum Theory, and Cryptography, 39–55. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5191-8_7.

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Abstract It is known that Shor’s algorithm can break many cryptosystems such as RSA encryption, provided that large-scale quantum computers are realized. Thus far, several experiments for the factorization of the small composites such as 15 and 21 have been conducted using small-scale quantum computers. In this study, we investigate the details of quantum circuits used in several factoring experiments. We then indicate that some of the circuits have been constructed under the condition that the order of an element modulo a target composite is known in advance. Because the order must be unknown in the experiments, they are inappropriate for designing the quantum circuit of Shor’s factoring algorithm. We also indicate that the circuits used in the other experiments are constructed by relying considerably on the target composite number to be factorized.

Barreira, Eva, e Vasco Peixoto de Freitas. "BIO.MOD Indices Application Examples". In External Thermal Insulation Composite Systems (ETICS), 35–45. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20382-9_4.

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Khare, C. P. "Melia composita Willd." In Indian Medicinal Plants, 1. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-70638-2_990.

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Azari, Mahdieh, e Ali Iranmanesh. "Edge-Wiener Indices of Composite Graphs". In Distance, Symmetry, and Topology in Carbon Nanomaterials, 217–47. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31584-3_14.

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Mohamed, Malik. "Glimpses of Composite Indian Culture". In The Foundations of the Composite Culture in India, 415–38. London: Routledge, 2023. http://dx.doi.org/10.4324/9781032668918-9.

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Smirnov, Sergey V. "A Survey of Composite Leading Indices for Russia". In Societies and Political Orders in Transition, 347–61. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90017-9_21.

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Paredes-Gázquez, Juan Diego, Eva Pardo e José Miguel Rodríguez-Fernández. "Robustness Checks in Composite Indices: A Responsible Approach". In Springer Proceedings in Mathematics & Statistics, 381–96. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78163-7_17.

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Shved, Mariia, Olena Shyshchak, Olena Astakhova e Michael Bratychak. "Coumarone-Indene Resins with Functional Groups". In Advanced Materials, Polymers, and Composites, 53–91. New York: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003105015-6.

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Katju, Manjari. "From composite nationalism to Hindu majoritarianism". In Routledge Handbook of Contemporary India, 128–39. 2^a ed. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003278436-9.

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Atti di convegni sul tema "Indice composite":

Kachhia, Jaivik, R. M. Shereef e S. A. Khaparde. "Operation and tariff for composite PV-battery system". In 2013 Annual IEEE India Conference (INDICON). IEEE, 2013. http://dx.doi.org/10.1109/indcon.2013.6726023.

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Banerjee, Sumit, Tapan Kumar Chattopadhyay e C. K. Chanda. "Voltage stability margin of distribution networks for composite loads". In 2012 Annual IEEE India Conference (INDICON). IEEE, 2012. http://dx.doi.org/10.1109/indcon.2012.6420685.

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Shihabudheen, K. V., e Jeevamma Jacob. "Composite control of flexible link flexible joint manipulator". In 2012 Annual IEEE India Conference (INDICON 2012). IEEE, 2012. http://dx.doi.org/10.1109/indcon.2012.6420732.

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Mishra, Ashish, e Sivasambu Mahesh. "Reliability of Ti/SiC Metal Matrix Composites". In ASME 2017 Gas Turbine India Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gtindia2017-4859.

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Components such as bladed rings, and bladed disks fabiricated out of titanium matrix composites were extensively explored in the two decades since about 1990 as light weight replacements for conventional superalloy blades and disks in the intermediate hot stages of gas turbines. One of the challenges, which has hindered their adoption is the relative unreliability of the composite components; nominally identical Ti composite specimen display a much larger variability in strength than their superalloy counterparts. In the present work, we have quantified the reliability of Ti matrix composites by developing a detailed micromechanical-statistical model of their failure. The micromechanical model resolves fibres, matrix, and the interface, and accounts for such failure modes as fibre breakage, matrix cracking, matrix plasticity, interfacial sliding, and debonding. It also accounts for mechanical interaction between these various failure modes. The mechanical model’s predictions are validated against synchotron X-ray measurements reported in the literature, both after loading, and unloading. Using the detailed micromechanical model, Ti matrix composite was simulated following a Monte Carlo framework. These simulations yield the empirical strength distribution of the Ti matrix composite, and insights into the dominant failure mode. The latter allows the construction of a stochastic model of composite failure. The stochastic model can be used to determine safe working loads as a function of composite size for any desired reliability level.

Kumar, T. Suresh, e V. Sankar. "Reliability improvement of composite electric power system using Unified Power Flow Controller". In 2011 Annual IEEE India Conference (INDICON). IEEE, 2011. http://dx.doi.org/10.1109/indcon.2011.6139523.

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Gangadari, Bhoopal Rao, e Shaik Rafi Ahamed. "FPGA implementation of compact S-Box for AES algorithm using composite field arithmetic". In 2015 Annual IEEE India Conference (INDICON). IEEE, 2015. http://dx.doi.org/10.1109/indicon.2015.7443745.

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Roy, Uttam Kumar. "Composing recorded Tabla sound to accompany musicians". In 2015 Annual IEEE India Conference (INDICON). IEEE, 2015. http://dx.doi.org/10.1109/indicon.2015.7443114.

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Rizvi, Reza, e Hani Naguib. "Synthesis and Characterization of LDPE-Carbon Nanotube Composite Foams". In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-444.

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This study details the synthesis and characterization of composites and composite foams of low-density polyethylene (LDPE) and multi-walled carbon nanotubes (MWCNT). LDPE-MWCNT composites were prepared by melt blending the components in a twin screw compounder and their foams were produced by batch foaming using CO2 as the blowing agent. The composites were characterized for dispersion using SEM and image results indicate good dispersability of MWCNT in LDPE with the formation of a MWCNT network in the LDPE matrix. Thermal and rheological properties of the composites were characterized and results indicate that even a small amount (1 wt.%) of MWCNTs can significantly affect the crystallization kinetics and the rheological behavior. Batch foaming results of the composites depict MWCNTs as heterogeneous nucleation sites for gas bubbles as indicated by the increase in cell density of the composite foams when compared to LDPE foams.

Parai, Devlina, Vindu Gautam, Vikas Upadhyay e Joy Prakash Misra. "A Study on Water Absorption Behavior of Jute and Ramie Hybrid Composites with and without SiC Filler". In International Conference on Frontiers in Desalination, Energy, Environment and Material Sciences for Sustainable Development & Annual Congress of InDA. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.161.4.

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Natural fiber reinforcements have attracted interest in sustainable manufacturing as a replacement for synthetic fibers in polymer composites. In this study, two natural fibers – jute and ramie were reinforced in three different proportions with epoxy resin and hardener to fabricate polymer matrix composites. Silicon Carbide (SiC) was used as a filler material in the three different compositions with jute and ramie fibers. All the composite specimens were fabricated using the hand-lay-up technique. The water absorption property of the fabricated composites was examined. Test results indicate that jute and ramie fiber composite with epoxy resin possesses high water absorption properties; further addition of SiC as filler material into the composite fabrication shows a decrease in water absorption percentage. The work also presents linear regression models (LRA) for forecasting the natural composites' water absorption behavior.

Sydor, Andriy, e Dariya Marunchak. "Valuing Reliability Indices of Composite Embedded Systems". In 2nd International Conference on Perspective Technologies and Methods in MEMS Design. IEEE, 2006. http://dx.doi.org/10.1109/memstech.2006.288688.

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Rapporti di organizzazioni sul tema "Indice composite":

Hoitink, Harry A. J., Yitzhak Hadar, Laurence V. Madden e Yona Chen. Sustained Suppression of Pythium Diseases: Interactions between Compost Maturity and Nutritional Requirements of Biocontrol Agents. United States Department of Agriculture, giugno 1993. http://dx.doi.org/10.32747/1993.7568755.bard.

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Several procedures were developed that predict maturity (stability) of composts prepared from municipal solid wastes (MSW). A respirometry procedure, based O2 uptake by compost, predicted (R2=0.90) the growth response of ryegrass in composts and an acceptable level of maturity. Spectroscopic methods (CPMAS13-NMR and DRIFT spectroscopy) showed that the stabilizing compost contained increasing levels of aromatic structures. All procedures predicted acceptable plant growth after approximately 110 days of composting. MSW compost suppressed diseases caused by a broad spectrum of plant pathogens including Rhizoctonia solani, Pythium aphanidermatum and Fusarium oxysporum. A strain of Pantoea agglomerans was identified that caused lysis of hyphae of R. solani. Evidence was obtained, suggesting that thermophilic biocontrol agents also might play a role in suppression. 13C-NMR spectra revealed that the longevity of the suppressive effect against Pythium root rot was determined by the concentration of readily biodegradable carbohydrate in the substrate, mostly present as cellulose. Bacterial species capable of inducing biocontrol were replaced by those not effective as suppression was lost. The rate of uptake of 14C-acetate into microbial biomass in the conducive substrate was not significantly different from that in the suppressive substrate although specific activity was higher. The suppressive composts induced systemic acquired resistance in cucumjber roots to Pythium root rot and to anthracnose in the foliage. Composts also increased peroxidase activity in plants by the conducive substrate did not have these effects. In summary, the composition of the organic fraction determined bacterial species composition and activity in the substrate, which in turn regulated plant gene expression relative to biological control.

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Michel Jr., Frederick C., Harry A. J. Hoitink, Yitzhak Hadar e Dror Minz. Microbial Communities Active in Soil-Induced Systemic Plant Disease Resistance. United States Department of Agriculture, gennaio 2005. http://dx.doi.org/10.32747/2005.7586476.bard.

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Induced Systemic Resistance (ISR) is a highly variable property that can be induced by compost amendment of potting media and soils. For example, previous studies showed that only 1 of 79 potting mixes prepared with different batches of mature composts produced from several different types of solid wastes were able to suppress the severity of bacterial leaf spot of radish caused by Xanthomonas campestris pv. armoraciae compared with disease on plants produced in a nonamended sphagnum peat mix. In this project, microbial consortia in the rhizosphere of plants grown in ISR-active compost-amended substrates were characterized. The plants used included primarily cucumber but also tomato and radish. Rhizosphere microbial consortia were characterized using multiple molecular tools including DGGE (Israel) and T -RFLP (Ohio) in both ISR-active field plots and potting media. Universal as well as population-specific bacterial and fungal PCR primers were utilized. T -RFLP analyses using universal bacterial primers showed few significant differences in overall bacterial community composition in ISR-active and inactive substrates (Ohio). In addition, the community members which were significantly different varied when different ISR-activecomposts were used (Ohio). To better characterize the shifts in microbial community structure during the development of ISR, population specific molecular tools were developed (Israel, Ohio).-PCR primers were designed to detect and quantify bacterial groups including Pyrenomycetes, Bacillus, Pan toea, Pseudomonas, Xanthomonas and Streptomyces as well as Trichoderma and Fusarium; two groups of fungi that harbor isolates which are ISR active (Isreal and Ohio). Bacterial consortia associated with cucumber plants grown in compost-amended potting mixtures were shown to be dominated by the phylogenetic taxon Bacteroidetes, including members of the genus Chryseobacterium, which in some cases have been shown to be involved in biocontrol (Israel). Nested-PCR-DGGE analyses coupled with long l6S rDNA sequencing, demonstrated that the Chryseobacteriumspp. detected on seed and the root in compost-amended treatments were derived from the compost itself. The most effective ISR inducing rhizobacterial strains were identified as Bacillus sp. based on partial sequencing of l6S rDNA. However, these strains were significantly less effective in reducing the severity of disease than Trichoderma hamatum382 (T382). A procedure was developed for inoculation of a compost-amended substrate with T -382 which consistently induced ISR in cucumber against Phytophthora blight caused by Phytophthora capsiciand in radish against bacterial spot (Ohio). Inoculation of compost-amended potting mixes with biocontrol agents such as T -382 and other microbes that induce systemic resistance in plants significantly increased the frequency of systemic disease control obtained with natural compost amendments.

Weitsman, Y. Residual-Stress Induced Damage in Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, aprile 1985. http://dx.doi.org/10.21236/ada164191.

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Alexander e Bedoya. L52328 Composite Repair of Mechanically-Damaged Pipes. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), aprile 2012. http://dx.doi.org/10.55274/r0010019.

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Composite materials continue to gain wider acceptance in the pipeline industry for repairing a range of pipeline anomalies. This success is due in large part to two factors. The first contributor is the execution of comprehensive research programs such as the first PRCI MATR-3-3, State of the Art Assessment of Composite Repair Systems and this second program contained herein focused on evaluating composite materials to repair damaged pipelines. The second factor associated with the widespread use of composite materials is the successful two-decade history that composite materials have had in repairing pipelines. While there have been a few unfortunate incidents in the field (primarily related to poor installation), composite materials have proven themselves to be well suited for repairing high pressure gas and liquid pipelines. The need existed for a set of integrity assessment procedures and guidelines to ensure proper use and application of composite repair materials for mechanically-damaged pipes. The results of this program indicate that when properly designed and installed, composite repair systems are able to restore integrity to mechanically-damaged pipes to a state that makes them fit for continued use at their normal design conditions. When composite materials are used for repairs, whether the repair involves corrosion, dents, or other anomalies, an integrity assessment should be completed. The integrity assessment procedures and guidelines presented in this report include an estimate of the future operating conditions to ensure that the design is adequate for the intended service.

Ishida, Hatsuo, e Philippe Bussi. Surface Induced Crystallization in Fiber Reinforced Semicrystalline Thermoplastics Composites. Fort Belvoir, VA: Defense Technical Information Center, marzo 1991. http://dx.doi.org/10.21236/ada236591.

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Lawrence, C. M., D. V. Nelson, J. R. Spingarn e T. E. Bennett. Measurement of process-induced strains in composite materials using embedded fiber optic sensors. Office of Scientific and Technical Information (OSTI), maggio 1996. http://dx.doi.org/10.2172/226060.

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Hsiung, L. In-Situ TEM Observations of Strain-Induced Interface Instability in TiAl/Ti3Al Laminate Composite. Office of Scientific and Technical Information (OSTI), aprile 2003. http://dx.doi.org/10.2172/15007359.

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Pochiraju, Kishore V. Multi-Physics Modeling and Simulation of Process-Induced Stresses in Polymer-Matrix Composites. Fort Belvoir, VA: Defense Technical Information Center, giugno 2002. http://dx.doi.org/10.21236/ada418111.

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Minz, Dror, Eric Nelson e Yitzhak Hadar. Ecology of seed-colonizing microbial communities: influence of soil and plant factors and implications for rhizosphere microbiology. United States Department of Agriculture, luglio 2008. http://dx.doi.org/10.32747/2008.7587728.bard.

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Abstract (sommario):

Original objectives: Our initial project objectives were to 1) Determine and compare the composition of seed-colonizing microbial communities on seeds, 2) Determine the dynamics of development of microbial communities on seeds, and 3) Determine and compare the composition of seed-colonizing microbial communities with the composition of those in the soil and rhizosphere of the plants. Revisions to objectives: Our initial work on this project was hampered by the presence of native Pythium species in the soils we were using (in the US), preventing us from getting accurate assessments of spermosphere microbial communities. In our initial work, we tried to get around this problem by focusing on water potentials that might reduce damage from native Pythium species. This also prompted some initial investigation of the oomycete communities associated seedlings in this soil. However, for this work to proceed in a way that would allow us to examine seed-colonizing communities on healthy plants, we needed to either physically treat soils or amend soils with composts to suppress damage from Pythium. In the end, we followed the compost amendment line of investigation, which took us away from our initial objectives, but led to interesting work focusing on seed-associated microbial communities and their functional significance to seed-infecting pathogens. Work done in Israel was using suppressive compost amended potting mix throughout the study and did not have such problems. Our work focused on the following objectives: 1) to determine whether different plant species support a microbial induced suppression of Pythium damping-off, 2) to determine whether compost microbes that colonize seeds during early stages of seed germination can adequately explain levels of damping-off suppression observed, 3) to characterize cucumber seed-colonizing microbial communities that give rise to the disease suppressive properties, 4) assess carbon competition between seed-colonizing microbes and Pythium sporangia as a means of explaining Pythium damping-off suppression. Background: Earlier work demonstrated that seed-colonizing microbes might explain Pythium suppression. Yet these seed-colonizing microbial communities have never been characterized and their functional significance to Pythium damping-off suppression is not known. Our work set out to confirm the disease suppressive properties of seed-colonizing microbes, to characterize communities, and begin to determine the mechanisms by which Pythium suppression occurs. Major Conclusions: Compost-induced suppression of Pythium damping-off of cucumber and wheat can be explained by the bacterial consortia colonizing seeds within 8 h of sowing. Suppression on pea was highly variable. Fungi and archaea play no role in disease suppression. Potentially significant bacterial taxa are those with affinities to Firmicutes, Actinobacteria, and Bacteroidetes. Current sequencing efforts are trying to resolve these taxa. Seed colonizing bacteria suppress Pythium by carbon competition, allowing sporangium germination by preventing the development of germ tubes. Presence of Pythium had a strong effect on microbial community on the seed.