10,422 research outputs found
Modelli decisionali per la definizione di scenari energetici carbon-neutral
No full textIl cambiamento climatico e l'inquinamento atmosferico rappresentano due delle principali sfide che l’umanità si trova ad affrontare oggi, con impatti significativi sulla salute umana, sull'economia e sugli ecosistemi.
Sebbene il cambiamento climatico e l'inquinamento atmosferico differiscano per scala spaziale, dinamiche temporali e impatti, condividono molteplici fonti di emissione, come quelle legate all’utilizzo di combustibili fossili. Pertanto, le azioni volte a mitigare uno dei due problemi spesso generano co-benefici anche per l’altro.
Questa tesi adotta un approccio integrato per identificare strategie efficienti volte a ridurre le emissioni di gas serra e migliorare la qualità dell'aria. A tal fine, viene utilizzato un modello di valutazione integrata, uno strumento multidisciplinare in grado di analizzare le interazioni tra le attività umane, le emissioni ed i loro impatti sull’ambiente e sulla salute umana.
Il modello consente di definire strategie di riduzione delle emissioni, con particolare attenzione sul settore dei trasporti, che è il settore maggiormente responsabile delle emissioni di CO2 e degli ossidi di azoto (NOx), precursori di importanti inquinanti atmosferici. Lo studio esplora soluzioni innovative, tra cui l'adozione di veicoli elettrici a batteria e veicoli con celle a combustibile a ossidi solidi alimentate da biometano, al fine di identificare strategie che integrino gli obiettivi di neutralità climatica con il miglioramento della qualità dell'aria.
L'area di studio è rappresentata dalla Pianura Padana, nel nord Italia, caratterizzata da un'elevata densità di popolazione, numerose attività industriali e importanti attività agricole. Questa regione supera frequentemente gli standard europei di qualità dell'aria per PM2.5 e NO2, principalmente a causa della formazione di inquinanti secondari, la cui generazione è favorita dalla sua conformazione geografica chiusa.
Le metodologie applicate includono l'analisi di scenario e l'ottimizzazione multi-obiettivo, combinando l’applicazione di misure end-of-pipe con strategie di transizione energetica.
I risultati principali dimostrano che un approccio integrato può ottenere riduzioni significative delle emissioni di gas serra e degli inquinanti atmosferici, offrendo al contempo importanti benefici economici e per la salute. In particolare, le politiche energetiche rivolte al settore dei trasporti, combinate con l'adozione di energie rinnovabili e standard di emissione più rigorosi per il riscaldamento domestico, si rivelano particolarmente efficaci.
Integrando tecniche avanzate di modellazione, questa tesi fornisce indicazioni utili per i decisori politici impegnati a rispettare le direttive europee in materia di clima e qualità dell'aria. Lo studio si conclude affrontando le sfide legate alla validazione dei risultati ottenuti con modelli di valutazione integrata e proponendo un approccio per valutare l’affidabilità dei risultati ottenuti. Questo approccio riprende una metodologia utilizzata nell’ambito della modellazione sul cambiamento climatico, ma scarsamente utilizzata per la qualità dell’aria e consiste nel confronto tra diversi modelli che operano su un medesimo dominio di simulazione.Climate change and air pollution are the two major environmental challenges that critically impact health, economy, and biodiversity.
While climate change and air pollution differ in spatial scales, temporal dynamics, and impacts, they share many common emissions sources, such as fossil fuel combustion. Therefore, actions to mitigate one of the problems often yield co-benefits or trade-offs in the other.
This research formulates and applies an integrated assessment model to address these challenges. IAM provides a multidisciplinary framework for analyzing the interactions between human activities, emissions, and environmental impacts. The model is applied to evaluate policy strategies, emphasizing the role of the transport sector, which significantly contributes to CO2 and nitrogen oxides (NOx), a precursor of air pollutants. The study investigates innovative solutions, including adopting battery-electric vehicles and biomethane-powered solid oxide fuel cell vehicles, to identify pathways that align climate neutrality targets with air quality improvements.
The study area is the Po Valley in Northern Italy, characterized by high population density, numerous industrial poles, and extensive agricultural activities. This region frequently exceeds European air quality standards for PM2.5 and NO2, largely due to the formation of secondary pollutants promoted by its enclosed geographic conformation. Methodologies applied include scenario analysis and multi-objective optimization, combining the application of end-of-pipe measures and energy transition strategies to address these challenges.
The key findings demonstrate that integrated strategies can achieve substantial reductions in GHG emissions and air pollutants and provide significant health and economic benefits. In particular, policies targeting the transport sector, combined with the adoption of renewable energy adoption and stricter emission standards for domestic heating emerge as particularly effective.
By integrating advanced modeling techniques, this thesis provides helpful insights for policymakers tasked to meet European climate objectives and air quality directives. The study concludes by addressing the challenges of validating the results obtained with integrated assessment models and proposing an approach for assessing the reliability of the results obtained. The approach uses a methodology commonly applied in climate change modelling and consists of comparing different integrating assessment models operating on a common simulation domain
Correspondence: Laura Kephart and Arthur Stupka
No full textThis 1936 correspondence, between Laura Kephart (Mrs. Horace Kephart) and Arthur Stupka, concerns a possible Kephart Memorial. Horace Kephart (1862-1931) was a noted naturalist, woodsman, journalist, and author and promoter of the Great Smoky Mountains National Park. Arthur Stupka (1905-1999) was the first park naturalist to work at the Great Smoky Mountains National Park
Mindscapes: Laura Riding's poetry and poetics /
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão.Esta tese propõe uma leitura revisionista da poesia contemporânea através do exame do caso de um dos mais esquecidos escritores norte-americanos do século XX: Laura (Riding) Jackson (1901-1991). O objetivo é demonstrar que Riding não apenas possuía uma poética definida e singular, mas que ela permanece uma das instâncias mais extremas e paradoxais do modernismo anglo-americano, a ponto de Riding abandonar a escrita da poesia em 1938. Recorrendo a conceitos de "formação do cânone" bem como às noções de "discurso" e "função do autor", em Foucault, investigo a construção do cânone da poesia moderna anglo-americana, recuperando o contexto e as circunstâncias da ocultação de Riding. Enquanto cubro os "discursos" poéticos em circulação na primeira metade do século XX-o "imagismo" de Pound, a "dissociação da sensibilidade", "impersonalidade" e "tradição" de Eliot, a "unidade orgância" e "ambigüidade" da Nova Crítica-ofereço um panorama crítico de modernismos alternativos sendo articulados à época. Minha intenção é demonstrar que os poemas de Riding são expressões vigorosas de um escritor para quem "a mente pensando se torna a força ativa do poema", para usar a apta formulação de Charles Bernstein. Entre minhas descobertas sobre as várias e complexas razões que levaram à não-canonização de Riding estão a hegemonia da Nova Crítica, o exílio voluntário de Riding da cena literária (onde são feitas ou desfeitas as reputações), sua recusa em ser antologiada, bem como em ser explicada em termos críticos que não os dela. Todos esses fatores, mais a "dificuldade" de sua poesia, contribuíram para fazer de Riding "a maior poeta esquecida da poesia norte-americana", como escreveu Kenneth Rexroth. Ajudado pelos insights de dois importantes críticos de poesia norte-americana, Charles Bernstein e Marjorie Perloff, defendo que a "poesia da mente" de Riding-onde o que está em jogo é que o que pensamos ser a nossa realidade-representa uma mudança radical no paradigma da poética modernista: de uma poesia centrada na imagem para uma poesia centrada na linguagem. Focalizando a experiência consciente e o tempo duracional do pensamento presente em seus poemas, concluo que as "pensagens" de Riding têm o objetivo preciso de constatar um fato universal: enquanto seres humanos e pensantes, estamos numa condição permanente chamada linguagem
Letter, Julia Gardiner Tyler to Mrs. Laura Holloway, author of First Ladies, dated September 20, 1869
No full textALS of Julia Gardiner Tyler to Mrs. Laura Holloway, author of First Ladies, dated September 20, 1869, about interviewing other first ladies. ALS.Found in:Mss. 65 T97 Additions, Series 1: Mss. Acc. 1993.19 Addition, 186
Heritage tourism: a case study of the Laura Ingalls Wilder Heritage Site at Pepin, Wisconsin
No full textPlan BMany things must be taken into consideration when developing a heritage tourism site. It can be a wonderful opportunity for the community involved to benefit economically and historically. Heritage tourism can keep alive the heritage and traditions of the communities past. When it is discovered that a heritage site exists, the first step is to consult with the community. A site will not succeed without the acceptance and assistance from the community involved. Once the interest is known, the development process can proceed. After determining that there is a heritage tourism site possibility in their area, a commumity must do research to determine the feasibility of the site, what will make it a success, and how to obtain that success. This study will examine a community with a heritage tourism site that has been successful in developing and maintaining it's site. By conducting this study, other communities seeking information for developing their site will have an example and tool to work with. The site chosen for this study is the Laura Ingalls Wilder site in Pepin, Wisconsin. The town is rich with it's heritage associated with Laura Ingalls Wilder. The development and success for this town will be documented through this study. Laura Ingails Wilder is a perfect choice for examining heritage tourism. The author of many American Pioneer books, she has become famous all over the world. In turn all places that she or her family members lived are or are becoming heritage tourism sites. There are older ones that have been in progress for some years, such as the one in Pepin, and there are ones that are being discovered through the popularity of new books written about Laura's family. These communities would benefi greatly from the information this study will produce. Without the bene-fit of this knowledge communities who are unaccustomed to tourism or the way the other Laura Ingalls Wilder sites operate, may make terrible errors in development, tarnishing the site. This may also reflect badly on the other Laura Ingalls Wilder sites. It is important for new Wilder sites to examine all information and know exactly what they are doing when developing the site. If all the Laura Ingalls Wilder sites can benefit from each other's knowledge and experience it will greatly increase the market for all sites. The more detailed and expansive the sites are about their knowledge and sites to see, the more people are going to want to travel to as many sites as possible, learning all they can about the life of Laura Ingalls Wilder and her family. These sites not only attract Laura Ingalls Wilder fans but all people that are interested in the American Pioneer period of the United States history. This study will provide the knowledge for communities who are developing heritage tourism sites, especially those focusing on Laura Ingalls Wilder. This is a very important study for tourism and especially heritage tourism. When a heritage site is discovered communities run into the barrier of not having the experience and knowledge to develop the site properly. This study will analyze tourism in Pepin, Wisconsin to determine it's successfulness due to the fact that it is a Laura Ingalls Wilder heritage tourism site, and Wfit was developed in a way to provide tourists with a view of Laura Ingalls Wilder's past and the past of many Pioneer Americans. By studying this subject it will allow for many people to benefit. Tourist who are seeking the pleasure of the knowledge of the past, and communities who want to preserve their past and profit from tourism
Model of a Hybrid Electric Vehicle Equipped with Solid Oxide Fuel Cells Powered by Biomethane
No full textTo promote the development of new technologies that allow an intensive use of renewable green energies and to overcome the problem of the lack of range of full electric vehicles, an interesting energy source is biomethane. The Fuel Cells (FCs) systems benefit from high efficiency and zero
emissions, and they are generally powered by hydrogen. One of the main problems related to hydrogen FCs is the current weak network of infrastructure’s need to supply the hydrogen itself. An alternative may be the development of FC vehicles powered by methane, or biomethane, to exploit a renewable energy source. The type of Fuel Cells that lends itself to a methane (or biomethane) power supply is the Solid Oxide Fuel Cell (SOFC). Considering the limitations of the SOFCs, a vehicle model powered by Fuel Cells fueled by methane (or biomethane) is created. This work concerns the creation of a vehicle model, and the sizing of the SOFC system (generator delivering a constant 3 kW) and battery pack (30 Ah), for a door-to-door waste collection vehicle, whose mission is known. The latter is a fundamental requirement due to the limitations found for Solid Oxide Fuel Cells: slow transient and long ignition times
Modeling of a Hybrid Fuel Cell Powertrain with Power Split Logic for Onboard Energy Management Using a Longitudinal Dynamics Simulation Tool
No full textThis work aims to develop a mathematical model for the simulation of a fuel cell (FC) hybrid powertrain. The work starts from modeling a single cell to obtain information on the entire FC stack. The model obtained was integrated into a simulation tool presented in the literature that simulates the longitudinal dynamics of auxiliary power unit hybrid electric vehicles and fully electric vehicles. Therefore, the integrated model allows the simulation of hybrid vehicles equipped with FC and a battery pack that acts as a peak power source. The tool simulates the mechanical and electrical behavior of the vehicle, introducing an investigation of the power flows relating to the FC and batteries. An appropriate power split logic has been implemented, allowing the correct management of the power distribution between the FC and the batteries. The importance of analyzing FC vehicles’ behavior arises from the recent necessity to find alternative propulsion systems, overcoming the range problems associated with fully electric vehicles. The innovation lies in the versatility and modularity of the model, which is open to modifications and features a low computational burden, making it suitable for testing new solutions by performing first design and sizing calculations
Core Journal Lists: Classic Tool, New Relevance
No full textReviews the historical context of core journal lists, current uses in collection assessment, and existing methodologies for creating lists. Outlines two next generation core list projects developing new methodologies and integrating novel information/data sources to improve precision: a national-level core psychology list and the other a local institutional core list for the interdisciplinary field of urban studies and planning. The paper is based on the authors’ panel presentation at the 2009 ACRL National Conference (Seattle, Washington) titled “Core Journal Lists Re-viewed and Re-imagined.”This is an electronic version of an article published in Robin A. Paynter, Rose M. Jackson & Laura Bowering Mullen (2010): Core Journal Lists: Classic Tool, New Relevance, Behavioral & Social Sciences Librarian, 29:1, 15-31. Behavioral & Social Sciences Librarian is available online at: http://www.tandfonline.com, http://dx.doi.org/10.1080/01639260903571096Peer reviewe
Assessing air pollution emissions vs. abatement costs in agricultural practices
No full textAgriculture is a vital component of human civilization, providing food, fiber, and fuel for billions of people worldwide. However, the agricultural sector has also been identified as a significant contributor to air pollution. This study investigates and analyses the impact of agrofarming activities on air pollution in very productive areas such as Northern Italy. It explores the various sources and mechanisms through which agriculture affects air quality compared to all the other emission sectors and the types of pollutants involved, and quantifies the consequences for human health of agricultural emissions. As a further and novel step, it highlights the technologies that can mitigate these negative impacts and promote sustainable agriculture by adopting an integrated assessment modeling approach. This study defines policy recommendations for the area at hand, determining the optimal compromises between air quality improvement and pollution abatement costs. For instance, it shows that it is possible to reduce the average PM2.5 concentration by 17% with an annual expenditure of 300 M€. Four percent of this improvement is due to end-of-pipe abatement measures in the agricultural sector. Such an improvement in air quality would translate into a reduction of tens of thousands of years of life lost by the resident population. This study concludes with an outlook of additional options for addressing the air pollution challenges associated with agro-farming activities that constitute a limit of the current study, but could open new research lines
IATUL 32nd Conference 2011, “Libraries for an Open Environment: Strategies, Technologies and Partnerships,” Warsaw University of Technology, Warsaw, Poland, 29 May-2 June 2011
No full textThis report provides details recorded from the author's attendance at the IATUL 2011 conference in Warsaw, Poland, May 29-June 2, 2011.This is a post-print version of an article that published in Library Hi Tech News. The published version is available at http://www.emeraldinsight.com/journals.htm?issn=0741-9058&volume=28&issue=8&articleid=1958452&show=abstrac
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