2,744 research outputs found

    A Framework for Assessing Public Private Partnerships

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    This paper examines in detail Public Private Partnerships (PPPs), discussing their main objectives, implementations and challenges. The possible joint venture between the government and private companies when establishing a PPP is addressed, and an analytical approach to evaluate a PPP measure of success (M) is proposed. Applications of PPP are described, giving special attention to American and European experiences. It concludes by examining future extensions of the analytical Measure of Success of a PPP and what lies ahead for future PPP implementations.Public Private Partnership; Tagus River Bridge, Alameda Corridor; Dulles Gateway; European Experience

    Alameda : un modelo estructural-funcional del cultivo de Vicia faba L

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    El modelo estructural-funcional ALAMEDA de un cultivo de Vicia faba L se ha construido dentro del formalismo de los sistemas de Lindenmayer o sistemas-L, es decir, dentro de unas de las teorías metaméticas del desarrollo relacionada con las gramáticas de crecimiento. ALAMEDA incluye explícitamente la morfología de las plantas y de la arquitectura de la cubierta del cultivo complementando a los modelos clásicos de simulación de cultivos, que simulan la cubierta como un medio homogéneo.su conexión a los modelos de procesos es clave para su aplicación en agronomía y en este trabajo se inicia y se habilita esta posibilidad. El objetivo del trabajo es la obtención de una base de datos morfológica detallada sobre Vicia faba L. Que permite la escritura de un modelo estructural, así como su conexión con un modelo de crecimiento empírico, y una primera validación a través de la simulación del área foliar. La descripción cualitativa y cuantitativa de la geometría y topología de plantas y cultivos se ha obtenido de ensayos en campo y en ensayo bajo condiciones controladas. Las técnicas utilizadas para la obtención de datos han sido las usadas en fisiología de cultivos junto con la digitalización electromagnética. Esta técnica permitió capturar la geometría y topología de la cubierta así como su evolución a lo largo del ciclo. La alta plasticidad de las habas dificulta la obtención de relaciones universales sobre número y tamaño de los órganos, encontrándose sin embargo que información válida para la planta entera sobre parámetros morfológicos como longitud, área foliar y ángulos, puede derivarse de observaciones hechas únicamente en el tallo principal o en uno de los secundarios. La expresión del filocrono y de las fenofases en unidades térmicas posibilitó la evolución hacia el modelo estructural-funcional, al permitir la conexión con un modelo de crecimiento. La simulación del área foliar del cultivo se realiza en ALAMEDA por órganos o módulos, permitiendo la localización espacial (3D) de dichos órganos y la simulación de la evolución de sus dimensiones. El modelo ALAMEDA se calibró con una de las series de datos disponibles de los ensayos de campo. En las primeras versiones del modelo, la simulación de la superficie foliar y de la intercepción de radiación fotosintéticamente activa no mostró diferencias significativas en comparación con las determinaciones de campo. En la última versión (ALAMEDA V.3), ya en fase estructural-funcional, las simulaciones de las longitudes de los órganos vegetativos y del área foliar se contrastaron con ensayos de diferentes fechas de siembra. La calidad de la simulación del área foliar y de su distribución en la cubierta es función de la simulación de dichas longitudes. La vocación final de ALAMEDA es el progreso hacia una modelización más mecanicista. La conexión con el modelo de crecimiento ha demostrado la viabilidad de este enfoqu

    Synergistic effects of childhood adversity and polygenic risk in first-episode psychosis: the EU-GEI study

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    The European Network of National Schizophrenia Networks Studying Gene-Environment Interactions (EU-GEI) Project is funded by grant agreement HEALTH-F2-2010-241909 (Project EU-GEI) from the European Community’s Seventh Framework Programme.Aas, M; Alameda, L; Di Forti, M; Quattrone, D; Dazzan, P; Trotta, A; Ferraro, L; Rodriguez, V; Vassos, E; Sham, P; Tripoli, G; La Cascia, C; La Barbera, D; Tarricone, I; Muratori, R; Berardi, D; Lasalvia, A; Tosato, S; Szoke, A; Llorca, PM; Arango, C; Tortelli, A; de Haan, L; Velthorst, E; Bobes, J; Bernardo, M; Sanjuan, J; Santos, JL; Arrojo, M; Del-Ben, CM; Menezes, PR; Selten, JP; Jones, PB; Jongsma, HE; Kirkbride, JB; Rutten, BPF; van Os, J; Gayer-Anderson, C; Murray, RM; Morgan,

    Geopolymers based on the valorization of Municipal Solid Waste Incineration residues

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    he proper management of Municipal Solid Waste (MSW) has become one of the main environmental commitments for developed countries due to the uncontrolled growth of waste caused by the consumption patterns of modern societies. Nowadays, municipal solid waste incineration (MSWI) is one of the most feasible solutions and it is estimated to increase in Europe where the accessibility of landfill is restricted. Bottom ash (BA) is the most significant by-product from MSWI as it accounts for 85-95 % of the solid product resulting from combustion, which is classified as a non-hazardous residue that can be revalorized as a secondary aggregate in road sub-base, bulk lightweight filler in construction. In this way, revalorization of weathered BA (WBA) for the production of geopolymers may be a good alternative to common reuse as secondary aggregate material; however, the chemical process to obtain these materials involves several challenges that could disturb the stability of the material, mainly from the environmental point of view. Accordingly, it is necessary that geopolymers are able to stabilize heavy metals contained in the WBA in order to be classified as non-hazardous materials. In this regard, the SiO2/Al2O3 ratio plays an important role for the encapsulation of heavy metals and other toxic elements. The aim of this research is to formulate geopolymers starting from the 0-2 mm particle size fraction of WBA, as a unique raw material used as aluminumsilicate precursor. Likewise, leaching tests of the geopolymers formulated were performed to assess their environmental impact. The findings show that it is possible to formulate geopolymers using 100 % WBA as precursor, although more investigations are needed to sustain that geopolymer obtained can be considered as non-hazardous materials

    Weathered bottom ash from municipal solid waste incineration: Alkaline activation for sustainable binders

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    Alkali-activated binders (AABs) stand out as promising candidates to replace ordinary Portland cement (OPC) since waste can be used as raw material for their manufacture. This study addresses the environmental feasibility of using weathered bottom ash (WBA) and metakaolin (MK) as alkali-activated binder precursors (AA-WBA/MK). Different proportions of WBA and MK were mixed (100/0, 75/25, 50/50, 25/75, and 0/100 wt%) with a mixture of waterglass (WG) and NaOH 8 M as an alkaline activator solution. The effect of increasing MK content was assessed from a chemical, physical, mechanical, and environmental perspective. The results revealed the formation of secondary reaction products of C-(A)-S-H, (C,N)-A-S-H, and N-A-S-H gels. The compressive strength of AA-WBA/MK binders decreased (from 61.6 MPa to 12.6 MPa) as the MK content increased. The monolithic tank test validated the use of AA-WBA/MK binders for construction purposes, although with some restrictions due to their content in As, Sb, and V. Finally, the encapsulation efficiency and mechanical performance of AA-WBA/MK binders was enhanced as the curing period increased

    State of California, [Instructions to all persons of Japanese ancestry living in the following area:] Alameda County, Contra Costa County, City of Oakland, Walnut Creek, and Alameda

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    Broadside instructs Japanese American residents in Contra Costa and Alameda Counties, includes Oakland, Walnut Creek, and Alameda, state of California to convene at a nearby Civil Control Station by May 7, 1942 to prepare for evacuation. Instructions describe recommended items to bring for evacuation, services offered at Civil Control Stations, and information for a "responsible family member" to arrive to a Civil Control Station prior to evacuation on May 1 or May 2 for further instruction.The War Relocation Authority (WRA), together with the Wartime Civil Control Administration (WCCA), the Civil Affairs Division (CAD) and the Office of the Commanding General (OFG) of the Western Defense Command (WDC) operated together to segregate and house some 110,000 men women and children from 1942 to 1945. The collection contains documents and photographs relating to the establishment and administrative workings of the (WDC), the (WRA) and the (WCCA) for the year 1942

    Alameda Circuit: Some notes on the Alameda Garden, Meetings, Shock box and Serigraphs Works

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    [EN] The personal exhibition of Gilbertto Prado and Grupo Poéticas Digitais was held at the Alameda Art Laboratory, LAA, in Mexico City in June / August 2018. The "Alameda Circuit" exhibition combined a series of site specific works created for the LAA , in the old convent of San Diego (XVI Century) in dialogue with personal works of the artist and the Group arranged in 5 different rooms. The idea, and its conceptual party, was to establish various circuits with / between space and visitors in their relationship with works. The various historical processes, including local customs, invasion, colonization and evangelization, cultural clashes and their ties to the urban environment, particularly the neighboring Paseo Alameda, combined with the story of an artistic trajectory of several decades, were put on the scene. The exhibition was curated by Jorge La Ferla. This text will deal with some notes on the Alameda Garden, Encontros (Meetings), and Shock Box works.[ES] La exposición personal de Gilbertto Prado y del Grupo Poéticas Digitais fue realizada en el Laboratorio Arte Alameda, LAA, de la Ciudad de México en junio/agosto de 2018. La muestra “Circuito Alameda” combinó una serie de obras site specific creadas para el LAA, en el antiguo convento de San Diego (Sec. XVI) en diálogo con trabajos personales del artista y el Grupo dispuestos en 5 salas distintas. La idea, y su partido conceptual, fue establecer diversos circuitos con/entre el espacio y los visitantes en su relación con las obras. Se pusieron en escena los diversos procesos históricos, entre las costumbres locales, la invasión, la colonización y evangelización, los choques culturales y sus vínculos del entorno urbano particularmente del vecino Paseo Alameda combinados con el relato de una trayectoria artística de varias décadas. La exposición fue curada por Jorge La Ferla. Este texto tratará de algunos apuntes sobre las obras Jardín Alameda, Encontros (Encuentros ) y Caja de Choque.Prado, G. (2019). Circuito Alameda: Algunos apuntes sobre las obras Jardín Alameda, Encontros, Caja de Choque y Serigrafías. ANIAV - Revista de Investigación en Artes Visuales. (5):13-29. https://doi.org/10.4995/aniav.2019.11967SWORD13295Arantes, P. (2009). @arte e Mídia:pesrpectivas da estética digital. 2 ed. São Paulo:Editora Senac.Burke, P. (2003). Hibridismo Cultural. Porto Alegre: Unisinos.Canclini, N. G. (1997). Culturas Híbridas - estratégias para entrar e sair da modernidade. São Paulo: EDUSP.Couchot, E. (2003). A tecnologia na Arte: da fotografia à realidade virtual. Porto Alegre: Editora UFRGS.Honour, H. (1975). The new golden land. European images of America from the discoveries to the present time. New York: Pantheon Books.La Ferla, J. (2016). Adeus à linguagem do cinema e vídeo. En Diálogos transdisciplinares: arte e pesquisa. G. Prado; M. Tavares; P.Arantes (Org.). (pp. 90-103). São Paulo.Lacerda, M. y Lorenzi, H. (2006). Frutas Brasileiras e Exóticas Cultivadas (De Consumo In Natura ). Nova Odessa: Plantarum.Laws, B. (2013). 50 Plantas que Mudaram o Rumo da História. Tradución: Ivo Korytowski. Rio de Janeiro: Sextante.Le Couteur, P. y Burreson, J. (2006). Os botões de Napoleão: as 17 moléculas que mudaram a história. Rio de Janeiro:Zahar.LIMA, L. Y PRADO, G. (2018). Imagens digitais interativas: do simulacro à imersão. DATJournal Design Art and Technology, [S.l.], v. 3, n. 2, 43-71. https://doi.org/10.29147/dat.v3i2.86Magalhães, A. y Beiguelman, G. (orgs.) (2014).Futuros Possíveis: Arte, Museus E Arquivos Digitais/Possible Futures: Art, Museums And Digital Archives São Paulo: Peirópolis.Mello, C. (2008). Extremidades do vídeo. São Paulo: Senac.Monachesi, J. (2005). Acaso30, entrevista com Gilbertto Prado. ARS (São Paulo), 3(6), 122-126. https://dx.doi.org/10.1590/S1678-53202005000200010O'Rourke, K. (2013). Walking and Mapping: artists. as cartographers. Cambridge: MIT Press.Paraguai, L. y Prado, G. (2001). Artistic Environments of Telepresence on the World Wide Web. Leonardo, Vol. 34, No. 5 , 437-442. https://doi.org/10.1162/002409401753521566Prado, G. (2003). Arte telemática: dos intercâmbios pontuais aos ambientes virtuais multiusuário. São Paulo: Itaú Cultural.Prado, G. (2010). "Algumas experiências de arte em rede: projetos wAwRwT, Colunismo e Desertesejo" En PORTO ARTE v. XVII, nº28, maio. (pp. 71- 83). Porto Alegre: Instituto de Artes/UFRGS. https://doi.org/10.22456/2179-8001.18790Prado, G. (2017a). Grupo Poéticas Digitais: Dialogo y Medio Ambiente. ANIAV - Revista de Investigación en Artes Visuales, [S.l.], v. 1, n. 1, 47-58. https://doi.org/10.4995/aniav.2017.7820Prado, G. (2017b). Projeto de instalação "15 Naranjos". En: Ignições. C. Rocha y L. Santaella (org.). (p. 115-126). Goiânia: Gráfica UFG.Prado, G. (2018). Project Amoreiras (Mulberry Trees): Autonomy and Artificial Learning in an Urban Environment. Leonardo Volume 51 | Issue 1 | February. pp.61-62. https://doi.org/10.1162/LEON_a_01557Prado, G. y La Ferla, J. (2018). Circuito Alameda. Ciudad de México: Instituto Nacional de Bellas Artes | Laboratorio Arte Alameda. http://www.gilberttoprado.net/assets/circuitoalameda_gttoprado_jlf.pd

    The Ravel Data Set

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    Alameda-Pineda X, Sanchez-Riera J, Wienke J, et al. The Ravel Data Set. In: Heylen D, Paggio P, Kipp M, eds. ICMI Workshop On Multimodal Corpora for Machine Learning. 2011

    NMR study of water exchange across the hepatocyte membrane

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    An understanding of the cellular permeability for water is needed to evaluate MR images of complex tissues, such as liver, and to interpret the effects of contrast agents. To obtain data essential for such an understanding we measured water exchange across the isolated rodent hepatocyte membrane by proton NMR relaxation with dextranmagnetite as a relaxation agent. The results are treated as water exchange in a two-compartment system, and possible reasons for deviations from that behavior are analyzed. The mean residence time of intracellular water was approximately 40 ms at 37 degrees C. We found the lower limit for the diffusional permeability of the hepatocyte membrane to be 8 x 10(-3) cm s-1. These results, combined with consideration of hepatic anatomy indicate that the failure to observe effects on the T1 of liver from particulate contrast agents such as magnetite, Gd-starch, and liposome encapsulated Mn2+ is due to the localization of these agents in the Kupffer cells. Also, the nonexponential T1 decay observed in normal liver is unlikely to be due to slow exchange of water between compartments

    State of California, [Civilian Exclusion Order No. 34], Alameda County

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    Broadside instructs Japanese American residents in Alameda County, state of California, that they will be excluded from the area by May 9, 1942 and to prepare for evacuation by that date to a Civil Control Office in the area. Residents failing to comply with the Civil Exclusion Order would be subject to criminal penalties and immediately apprehended and interned. Also instructs "responsible family members" to report to the Civil Control Office on May 4 or May 5 for further instruction.The War Relocation Authority (WRA), together with the Wartime Civil Control Administration (WCCA), the Civil Affairs Division (CAD) and the Office of the Commanding General (OFG) of the Western Defense Command (WDC) operated together to segregate and house some 110,000 men women and children from 1942 to 1945. The collection contains documents and photographs relating to the establishment and administrative workings of the (WDC), the (WRA) and the (WCCA) for the year 1942
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