Academic literature on the topic 'Zone di impatto'
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Journal articles on the topic "Zone di impatto"
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Lombardo, Luigi, and Roberta Rossi. "Disfunzioni sessuali e Sclerosi multipla: aspetti epidemiologici, eziopatogenetici e clinici." RIVISTA DI SESSUOLOGIA CLINICA, no. 1 (July 2011): 55–74. http://dx.doi.org/10.3280/rsc2011-001004.
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La Sclerosi multipla (SM) č una malattia cronica che colpisce i giovani adulti in un'etŕ compresa fra i 21 ed i 54 anni ed č piů comune fra le donne che fra gli uomini. Č una malattia degenerativa che provoca una demielinizzazione progressiva nel sistema nervoso con sintomi che dipendono dal tipo di forma clinica e dalla localizzazione delle lesioni. La SM č una malattia a genesi presumibilmente autoimmune associata a fattori di rischio genetici ed ambientali probabilmente correlati ad agenti patogeni ancora non esattamente individuati. Tra i fattori ambientali, le infezioni sessualmente trasmesse sono quelle piů probabilmente connesse con l'eziologia della malattia. Nelle ultime decadi č stato osservato un aumento dei tassi di incidenza e prevalenza e ciň ha posto l'Italia fra le zone ad lato rischio. La SM esercita un impatto diretto sulla sessualitŕ dovuto alle lesioni nel sistema nervoso centrale e periferico ed ai diversi sintomi neurologici ed ha un grosso impatto sulla qualitŕ della vita. Le disfunzioni sessuali colpiscono circa il 50-90% degli uomini ed il 40-80% delle donne affette da SM. I tipi di disfunzione sessuale (DS) possono essere categorizzati in tre livelli. DS primaria, che include la riduzione della libido, della lubrificazione e dell'orgasmo. DS secondaria, caratterizzata da limitazioni nell'attivitŕ sessuale dovute a sintomi fisici. DS terziaria, legata ad aspetti psicologici, emotivi, sociali e culturali.
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Poehner, Matthew E. "Dynamic Assessment as a Dialectical Framework for Classroom Activity: Evidence From Second Language (L2) Learners." Journal of Cognitive Education and Psychology 8, no. 3 (October 2009): 252–68. http://dx.doi.org/10.1891/1945-8959.8.3.252.
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First introduced to the West by Vygotsky’s colleague, Luria (1961), the zone of proximal development (ZPD) has inspired an approach to evaluating learning potential known as dynamic assessment (DA). However, Vygotsky (1986) also conceived of the ZPD as a guiding principle for teaching to optimally affect learner development, a notion that has been enthusiastically researched in education. The field of applied linguistics takes as its point of departure a dialectical reading of Vygotsky, understanding assessment of the ZPD and teaching in the ZPD to be a unified process. To date, this work has focused on classroom contexts where the provision of mediation during teacher–learner interactions may simultaneously illuminate learner abilities and promote development. Examples are presented involving learners of French. D’abord introduite à l’Ouest par un collègue de Vygotsky, Luria (1961), la Zone Proximale de Développement (ZPD) a inspiré une approche visant à évaluer le potentiel d’apprentissage connue sous le nom d’Évaluation Dynamique (DA). Pourtant, Vygotsky (1986) concevait aussi la ZPD comme un principe capable de guider un enseignement visant à influencer de manière optimale le développement de l’élève, une notion qui a été explorée avec enthousiasme dans le domaine de l’éducation. Le champ de la linguistique appliquée prend comme point de départ une lecture dialectique de Vygotsky, comprenant l’évaluation de la ZPD et l’enseignement dans la ZPD dans un même processus. Jusqu’au présent, ce travail s’est centré sur les contextes de classe où l’offre de médiation au cours des interactions enseignant-élè ve peut simultanément éclairer des capacités de l’élève et promouvoir leur développement. Les exemples présentés concernent des élèves qui apprennent le français langue seconde. Zunächst von Vygotskys Kollegen Luria (1961) in der westlichen Welt vorgestellt, hat die Zone der proximalen Entwicklung (ZPE) einen Ansatz zur Untersuchung des Lernpotentials inspiriert, der als dynamische Diagnostik (Dynamic Assessment, DA) bekannt geworden ist. Vygotsky (1986) hat jedoch die ZPE auch als Leitprinzip für ein Lehren konzipiert, das optimalen Einfluss auf die Entwicklung des Lerners haben soll, eine Idee, die enthusiastisch im pädagogischen Feld untersucht wurde. Der Bereich der angewandten Linguistik nimmt als ihren Ausgangspunkt eine dialektische Auslegung von Vygotsky, bei dem die Erfassung der ZPE und das Unterrichten in dieser Zone als einheitlicher Prozess aufgefasst werden. Derzeit fokussiert diese Arbeit auf Klassenraumkontexten, wo die Bereitstellung von Mediation während Lehrer-Lerner-Interaktionen in simultaner Weise die Fähigkeiten der Lerner aufhellen kann und gleichzeitig Entwicklung fördert. Beispiele von Schülern aus dem Fremdsprachenunterricht werden vorstellt. La Zona de Desarrollo Próxima, introducida primeramente en occidente por Luria (1961), que fue discípulo de Vygotsky, ha inspirado un enfoque para evaluar el potencial de aprendizaje, entendido como una Evaluación Dinámica. Sin embargo, Vygotsky (1986) concibió la Zona de Desarrollo Próxima como una guía para la enseñanza y para optimizar el impacto del desarrollo del aprendiz, una noción que ha sido investigada de forma enfática en educación. El campo de la lingüística aplicada toma como punto de partida una lectura dialéctica de Vygotsky, una evaluación comprensiva de la Zona de Desarrollo Próxima y una enseñanza en dicha Zona para convertirlo en un proceso unificado. Este trabajo se ha focalizado en el contexto del aula, donde la provisión de la mediación se ha producido durante las interacciones entre el profesor y los estudiantes, lo cual permite iluminar simultáneamente las habilidades de los estudiantes e incrementar su desarrollo. Se presentan ejemplos relativos a estudiantes de Francés. La Zona di Sviluppo Prossimale (ZPD), sin dalla sua prima presentazione in Occidente da parte di Luria (1961) collega di Vygotsky, ha ispirato l’approccio di valutazione del potenziale di apprendimento noto come Valutazione Dinamica (DA). Tuttavia Vygotsky (1986) aveva anche concepito la ZPD come un principio guida per un insegnamento che abbia un impatto ottimale sullo sviluppo dello studente, una idea che è stata oggetto di ricerche entusiastiche in educazione. Il campo della linguistica applicata considera come punto di partenza una lettura dialettica di Vygotsky, intendendo la valutazione della ZPD e l’insegnamento nella ZPD come un processo unificato. Finora questo lavoro si è focalizzato sui contesti di classe, in cui la mediazione durante le interazioni docente-studente pu ò nello stesso tempo mettere in luce le abilit à dello studente e promuovere lo sviluppo. Vengono presentati esempi che coinvolgono studenti francesi.
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Presti, G., and C. Blasi. "Studio Sinfitosociologico Sulla Vegetazione di Un'Area Ad Elevato Impatto Antropico: La Zona di Malagrotta (Lazio Centrale)." Giornale botanico italiano 128, no. 1 (January 1994): 481. http://dx.doi.org/10.1080/11263509409437285.
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Kautsary, Jamilla. "PERENCANAAN PERATURAN ZONASI DI KAWASAN KONSERVASI (STUDI KASUS PECINAN SEMARANG)." Jurnal Planologi 15, no. 2 (October 14, 2018): 216. http://dx.doi.org/10.30659/jpsa.v15i2.3526.
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ABSTRACTZoning regulations for spatial planning in Indonesia are an integral part of the Spatial Detail Plan. The zoning regulation serves as a technical reference for the utilization and control of spatial utilization. This is done to maintain the use of space that develops in accordance with the characteristics of the zone and to minimize negative impacts. Traditional Chinatown settlements have certain characteristics that develop according to historical and spiritual factors of the community. Behind this characteristic is a meaning that is considered very important for this community, so that it cannot be arbitrarily arranged. This paper examines zoning regulations implemented in the Semarang Chinatown area and how far the local characteristics of the zone are used as a consideration of planning zoning regulations for spatial use in the region. This paper uses a rationalistic qualitative deductive approach with empirical description techniques. Some important findings identified from this paper are: first zoning regulations applied in the Spatial Detail Plan are still minimal and limited to the determination of spatial functions, the network system that serves related to the basic coefficient of build, height of the building. Both unique characteristics that must be considered in zoning arrangements in Chinatown such as activity grouping, spatial use rules, especially in skewers zones, and rules of space use around places of worship or sanctified spaces, building height and coefficient of existing buildings have not been considered at all. Recommendations that can be given from this paper are that the minimum zoning regulation components that apply in Indonesia according to the applicable standards are applied with special consideration of the unique characteristics of the region in the spatial arrangement.Keywords: Zoning, Conservation, Traditional, Chinatown ABSTRAKPeraturan zonasi dalam penataan ruang di Indonesia merupakan bagian yang tidak terpisahkan dari Rencana Detail Tata Ruang. Peraturan zonasi tersebut berfungsi sebagai rujukan teknis untuk pemanfaatan dan mengendalikan pemanfaatan ruang. Hal ini dilakukan untuk mejaga agar pemanfaatan ruang yang berkembang tetap sesuai dengan karakteristik zona serta untuk meminimalkan dampak negatif. Permukiman tradisional Pecinan memiliki karakteristik tertentu yang berkembang sesuai faktor kesejarahan dan spiritual dari masyarakatnya. Dibalik karakteristik yang ada ini terselip makna yang dianggap sangat penting bagi komunitas ini, sehingga tidak bisa sembarangan untuk diatur. Tulisan ini mengkaji peraturan zonasi yang dilakukan di kawasan Pecinan Semarang dan seberapa jauh karakteristik lokal zona digunakan sebagai pertimbangan perencanaan peraturan zonasi pemanfaatan ruang di kawasan tersebut. Tulisan ini menggunakan pendekatan deduktif kualitatif rasionalistik dengan teknik deskripsi empiris. Beberapa temuan penting yang terindentifikasi dari tulisan ini adalah: pertama peraturan zonasi yang diterapkan dalam Rencana Detail Tata Ruang masih minim dan terbatas pada penentuan fungsi ruang, sisten jaringan yang melayani terkait koefisien dasar bangun, ketinggian bangunan. Kedua karakteritik unik yang harus dipertimbangkan dalam pengaturan zonasi di Pecinan seperti pengelompokan kegiatan, aturan pemanfaatan ruang khususnya di zona tusuk sate, dan aturan pemanfaatan ruang disekitar tempat peribadatan atau ruang-ruang yang disucikan, keinggian bangunan dan koefisien bangunan eksisting belum di pertimbangkan sama sekali. Rekomendasi yang bisa diberikan dari tulisan ini adalah minimal komponen peraturan zonasi yang berlaku di Indonesia sesuai standarat yang berlaku diterapkan dengan pertimbangan khusus karakteristik unik kawasan dalam pengaturan ruang.Kata kunci: Zonasi, Konservasi, Tradisional, Pecinan
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Schlee, Mônica Bahia. "The role of buffer zones in Rio de Janeiro urban landscape protection." Journal of Cultural Heritage Management and Sustainable Development 7, no. 4 (November 20, 2017): 381–406. http://dx.doi.org/10.1108/jchmsd-10-2015-0040.
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Purpose The purpose of this paper is to analyze and discuss the application of buffer zones as an urban landscape heritage management tool, using Rio de Janeiro as the main case study, in order to inform urban regulation around the sites inscribed as World Heritage Cultural Landscape and disclose its relevance to link urban planning, cultural heritage management and sustainable development. Design/methodology/approach The methodological approach encompasses: conceptual framework – contextualization of heritage protection theory, focusing on landscape protection and buffer zones; discussion: cross-national comparative overview of buffer zones conceptual framework on the international heritage protection policy; historical background and spatial analysis, through GIS mapping, of local heritage protection policy, tracing its evolution through time; examination of prospects and challenges of this management tool, including strengths, weaknesses, opportunities and threats, based on previous international, local experiences on natural and cultural heritage protection; and gathering of strategies for the implementation of buffer zones in local landscape management. Findings Core heritage sites and their buffer zones are integrated elements and act together to protect landscape significance and dynamic integrity (DI). In Rio de Janeiro, beyond the function of a caution zone, other important functions of landscape heritage buffer zones are to guarantee spatial and social connections of the protected sites, as well as the visual relationship between them and other significant urban landscape features. Strategies for the implementation of buffer zones in local landscape management should address the articulation of landscape protection governance; the conservation of visual, functional and structural identity quality and legibility and the monitoring of DI. Research limitations/implications The methodology approach adopted in this study may also benefit from and foster further investigations, which could include the elaboration of a landscape management plan and an impact assessment inventory, refining the scale of study to the level of local watersheds, and a deeper examination of the popular cultural imprints within the World Heritage property buffer zone. Practical implications Strategies to the implementation of the Carioca Landscapes buffer zone include a gradation of protection and control of impacts according to the distance of the core sites (in the form of rings or layers). The buffer zone should help to preserve the character, significance, and DI of the protected sites and guarantee their spatial and social connections, as well as the visual and functional relationship between them and between other significant landscape features of the city. All those management strategies should be founded on the elaboration of a broad urban landscape management plan with the local society involvement. Social implications In Rio de Janeiro’s specific case, bridging the vision of culture and nature as opposite poles and, transcending the social segregation through community involvement should certainly be among the main guiding principles to the application of buffer zones for supporting landscape sustainability. Therefore, the establishment of regulation criteria and parameters within the limits of the buffer zone must acknowledge that the (urban) landscape should carefully articulate the different social agent visions and local urban contexts. Originality/value The main contribution of this paper is to gather different visions of the role of buffer zones and disclose possibilities of conciliation between theory and practice concerning landscape protection, arguing for gathering natural and cultural heritage policies into the urban planning processes. Harnessed together, the suggested buffer zone implementation strategies may provide a proactive approach to Rio’s urban landscape protection and contribute to foster landscape sustainability and resilience. Although based on a specific case study, the adopted methodological approach may be transferable, with some adjustments, to other World Heritage properties, especially those located in urban areas under development pressures.
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Guastella, Cecilia. "Le ceramiche di impasto dalla Zona D a Mozia. Aspetti socio-economici in ambito domestico." Vicino Oriente 24 (2020): 85–107. http://dx.doi.org/10.53131/vo2724-587x2020_5.
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Irdiana, Sukma, and Jovi Iristian. "PEMBERDAYAAN MASYARAKAT NELAYAN DI KECAMATAN TEMPURSARI KABUPATEN LUMAJANG." Empowerment Society 2, no. 2 (August 7, 2019): 31–38. http://dx.doi.org/10.30741/eps.v2i2.469.
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This study aims to determine the development and empowerment, obstacles in empowerment, the role of government in empowerment. This study used a descriptive qualitative research design using survey methods, field observations, interviews and triangulation. The subjects of the study were the fishermen of Tempursari Subdistrict, Lumajang Regency with 70 fishermen. The results showed that: (1) the process of community development and empowerment included (a) increased skills and independence of the fishing community, (b) there were social, economic, and educational impacts, (2) inhibiting factors including the character or nature and thinking of the community different, constrained human resource readiness, community understanding is still low. (3) the role of government that is with the participation and involvement in community empowerment. (4) Strategies in developing the coastal zone, namely the community economy.
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Suman, Ali. "ANALISIS KEBIJAKAN PENGGUNAAN PUKAT IKAN DI PERAIRAN ZONA EKONOMI EKSKLUSIF INDONESIA SAMUDERA HINDIA." Jurnal Kebijakan Perikanan Indonesia 1, no. 2 (February 3, 2017): 131. http://dx.doi.org/10.15578/jkpi.1.2.2009.131-138.
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Dalam rangka pemanfaatan sumber daya ikan demersal yamg optimal bagi peningkatan devisa dan pengembangan wilayah, maka dikeluarkan Keputusan Menteri Pertanian No.770/Kpts/IK.120/10/1996 tentang penggunaan pukat ikan di perairan Zona Ekonomi Eksklusif Indonesia. Untuk melihat sampai sejauh mana mutu dan efektivitas kebijakan ini, maka dilakukan analisis input, proses, output, dan dampak terhadap kebijakan tersebut. Hasil analisis menunjukkan bahwa kebijakan penggunaan pukat ikan perlu ditinjau kembali dan disarankan sebaiknya untuk dicabut. Hal ini berkaitan dengan tidak terealisirnya dampak yang diinginkan dalam kebijakan tersebut, sementara yang timbul justru dampak yang tidak diinginkan. Selain itu, kebijakan ini akan mendorong timbul illegal, unreported, and unregulated serta konflik sosial di tingkat nelayan.The agriculture ministrial decree of No.770/Kpts/IK.120/10/1996 on the use of fish net was passed in order to optimally utilized demersal fish resource to raise export earnings and trigger regional development. An input, process, output, and impact approach was exerted to evaluate the quality of the decree. It was found that the decree should be revoked as the targeted impacts of the decree were not achieved. The decree, on the other hand, tended to bring about negative impacts such as unexpected illegal fishing and social unrest among small fishermen.
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Rezainy, Anissa, Lailan Syaufina, and Imas Sukaesih Sitanggang. "PEMETAAN DAERAH RAWAN KEBAKARAN DI LAHAN GAMBUT BERDASARKAN POLA SEKUENS TITIK PANAS DI KABUPATEN PULANG PISAU KALIMANTAN TENGAH." Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 10, no. 1 (March 20, 2020): 66–76. http://dx.doi.org/10.29244/jpsl.10.1.66-76.
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Land and forest fire is one of the major that caused Indonesia’s deforestation, who has a significant impact to the environment, loss of conservation, air pollution and economic loss. This research makes a spatial modelling along with factor that can affect collerates the forest fire. Spatial model of vulnerability of land and forest fire is built by composite mapping analysis method. Hotspot that is used in this research is the results of data mining processing, with sequential pattern mining technique which to find the relationships between the occurances of sequential event and pattern that often appear. From the six variables that influence land and forest fire there are four variables that impacts on the study area, that is forest zone, depth of peatland, distance of irrigation, and distance of road. The fire in the area of study occurs many times in the peatland area with the depth of 400-800 cm. Land and forest fire occurs frequently in 100-900 meters from irrigation and land and forest fire also occurs frequently in 1-4 km form the road. Land and forest fire occurs frequently in protected forest
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Suhery, Novel Desra, Ni Kadek S. Pusparini, Arif Nurcahyanto, Muh Syahrir, and A. Mukhlisin Rony. "KO-EKSISTENSI KEGIATAN PERIKANAN TANGKAP DAN KEBERADAAN ANJUNGAN MIGAS DI LAUT SERTA PENDEKATAN PENGELOLAANNYA DI PANTAI UTARA JAWA BARAT (Coexistence between Capture Fisheries and Oil & Gas Platform – A Management Approach in Northern Coast of West Java)." Marine Fisheries : Journal of Marine Fisheries Technology and Management 7, no. 1 (October 7, 2016): 13. http://dx.doi.org/10.29244/jmf.7.1.13-24.
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<p>ABSTRACT<br /><br />Intersection of capture fisheries activities and offshore oil and gas exploitation occurs because they use same areas. Restricted zone at 500 meters radius from oil and gas platform has both positive and negative impacts to ecological, social as well as economic. This condition triggers negative perception and social conflict from fishers community. This paper aims to describe coexistence impact and benefit of both capture fisheries and oil & gas platform, identify stakeholders involved and determine management recommendation. Northern coast of West Java-Indonesia is selected as case study location. The qualitative descriptive, stakeholders identification and gap analysis from Focus Group Discussion (FGD) are undertaken as the method of this study. The qualitative descriptive method is used to describe the positive and negative impact of coexistence between capture fisheries and oil and gas platform. Method for identifying stakeholders is used a continuum of stakeholders from the macro to the micro level. Determination of management recommendation is arranged with gap analysis. Restricted zone at 500 meters radius from oil and gas platform plays as a conservation zone for fishes, and increases productivity of fishers, but it is still triggered negative perception from fishers. Thirteen stakeholders are identified. They have the role and function to manage coexistence of both activities. Management approach should focus on regulation, ecology, social and economic aspects. Role and function played by 13 stakeholders will make both activities go with harmony.<br /><br />Keywords: coexistence, oil & gas platform, capture fisheries, stakeholders<br />-------</p><p><br />ABSTRAK<br /><br />Kegiatan pertambangan migas di lepas pantai (offshore) seringkali bersinggungan dengan kegiatan penangkapan ikan, karena menggunakan perairan yang sama. Larangan bagi nelayan memasuki zona terlarang hingga radius 500 meter dari bagian terluar anjungan migas menimbulkan dampak positif dan negatif baik secara ekologi, sosial maupun ekonomi. Kondisi ini seringkali memunculkan persepsi negatif dan dapat meningkat menjadi konflik sosial. Penelitian ini bertujuan untuk mengelaborasi manfaat keberadaan masing-masing kegiatan (ko-eksistensi), menentukan stakeholders terkait dalam pengelolaan dan menentukan rekomendasi pengelolaan ko-eksistensi kedua kegiatan. Makalah ini mengangkat studi kasus di perairan pantura (pantai utara) Jawa Barat. Metode yang digunakan yaitu deskriptif kualitatif, stakeholder analysis dan gap analysis yang bersumber dari Focus Group Discussion (FGD). Deskriptif kualitatif untuk memaparkan manfaat positif-negatif kedua kegiatan serta persepsi nelayan terhadap keberadaan anjungan migas di laut. Stakeholders diidentifikasi berdasarkan tingkatan kesatuannya dari level makro hingga mikro, serta gap analysis untuk merumuskan rekomendasi pengelolaan. Hasil penelitian menunjukkan bahwa keberadaan anjungan dan zona terlarang dapat menjadi kawasan konservasi sumber daya ikan, namun memunculkan persepsi negatif dari nelayan dan berpengaruh positif terhadap produktivitas penangkapan. Kajian terhadap stakeholders menunjukkan bahwa terdapat 13 stakeholders yang memiliki peran dan fungsi dalam mengelola kondisi ko-eksistensi antara kegiatan penangkapan ikan dengan keberadaan anjungan migas ini. Pendekatan pengelolaan dengan fokus pengelolaan pada aspek regulasi, ekologi, sosial dan ekonomi dengan pelaksanaan peran dan fungsi masing-masing stakeholders dapat menjadikan kegiatan perikanan tangkap dan keberadaan anjungan dapat berjalan secara selaras dan bermanfaat secara ekologi, sosial dan ekonomi.<br /><br />Kata kunci: ko-eksistensi, anjungan migas, penangkapan ikan, stakeholders</p>
Dissertations / Theses on the topic "Zone di impatto"
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Beltrami, Riccardo. "Stato ecologico di Punte Alberete e Valle Mandriole: popolamenti macrozoobentonici e chimica delle acque." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6467/.
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Il presente studio si è proposto di fornire un contributo per la definizione dello stato ecologico delle zone umide d’acqua dolce ravennati (Punte Alberete, Valle Mandriole e uno stagno temporaneo creatosi nella limitrofa Pineta di San Vitale), attraverso lo studio della fauna macrobentonica presente nei sedimenti e nella vegetazione emergente. Sono stati prelevati campioni d’acqua con lo scopo di analizzare alcuni parametri chimico fisici, per relazionarli con i dati ecologici sulle comunità oggetto di studio. Inoltre è stato valutato il potenziale effetto sulle comunità macrozoobentoniche della attuale gestione di Valle Mandriole, che prevede il prosciugamento estivo della zona meridionale al fine di consentire operazioni di sflacio della vegetazione. Per valutare questo tipo di impatto è stato applicato un disegno di campionamento di tipo Beyond-BACI. Sono stati definiti quattro siti di controllo ed un sito potenzialmente impattato. Sono stati definiti due punti di campionamento su ciascun sito e sono stati campionati in totale quattro volte ciascuno, due volte prima del periodo estivo, corrispondente alla messa in secca del sito impattato, e due volte in autunno. I dati raccolti sul benthos e sulle acque sono poi stati analizzati attraverso l’analisi statistica multivariata PERMANOVA. I risultati dei test statistici non hanno rilevato nessun tipo di impatto associabile alla pratica di gestione attuata a Valle Mandriole, mentre l’analisi delle comunità macrozoobentoniche ha evidenziato, attraverso confronti temporali con dati storici e con altri studi, una situazione di degrado dal punto di vista delle stato ecologico di Punte Alberete e Valle Mandriole, molto probabilmente associabile all’abbondante presenza del gambero della Louisiana. La condizione di stato ecologico non soddisfacente può oltretutto essere imputabile anche alla qualità ecologica scarsa dei corsi d’acqua deputati al ricarico delle zone umide considerate. Lo studio ha inoltre sottolineato l’importanza dal punto di vista conservazionistico dello stagno in Pineta San Vitale.
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Cacchi, Alberto. "Valutazione dell'attività fisica tramite l'uso del Global Positioning System." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
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Questo elaborato è stato strutturato in 3 diversi capitoli, nel capitolo 1 sono presentate informazioni generali su: che cosa sia un sistema GPS, come funzioni, i suoi principali errori e alcune implementazioni.
Il capitolo 2 riguarda i sistemi GPS indoor di nuova tecnologia e le loro applicazioni.
Mentre il capitolo 3 racchiude una analisi di alcuni studi, che riguarda l'utilità della raccolta dati, tramite sistemi GPS nell'ambito sportivo. In particolare nella prima parte si studia la validità e l'affidabilità delle misure GPS considerando l'evoluzione delle unità GPS stesse con l'aumento di frequenza di campionamento. Una volta verificati questi parametri, sono stati presi in considerazione nella seconda parte la raccolta di alcuni studi, riguardanti il monitoraggio dell'attività fisica di individui comuni in relazione all'ambiente in cui si trovano. Verificandone la qualità dei dati tramite lo studio della quantità dei dati persi. Infine nell'ultima parte viene focalizzata la ricerca sulle diverse variabili misurabili con il GPS: distanza totale, distanza relativa, velocità e carico sul corpo degli atleti, e come esse cambiano in relazione ai ruoli, alla competitività e all'età. Quest'ultima analisi è sviluppata nel contesto di vari sport di squadra.
Books on the topic "Zone di impatto"
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"Wenchuan di zhen zai hou hui fu chong jian zong ti gui hua" shi shi she hui ying xiang ping gu: Evaluation of the social impact of the implementation of the overall plan for post-wenchuan earthquake restoration and reconstruction. Beijing: She hui ke xue wen xian chu ban she, 2010.
Find full textConference papers on the topic "Zone di impatto"
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Maksurov, Aleksey. "COORDINARE LA TECNOLOGIA GIURIDICA NELLA ZONA DI LAZIO NELLA REPUBBLICA ITALIANA." In IMPATTO DELL'INNOVAZIONE SULLA SCIENZA: ASPETTI FONDAMENTALI E APPLICATI. European Scientific Platform, 2020. http://dx.doi.org/10.36074//26.06.2020.v2.42.
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Zannis, Theodoros C., Dimitrios T. Hountalas, Elias A. Yfantis, and Roussos G. Papagiannakis. "Thermodynamic Analysis of the Effects of Fuel-Side and Air-Side Oxygen Addition on Diesel Engine Combustion Characteristics and Pollutant Formation." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66367.
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A multi-zone combustion model is used in the present study to examine the effect of increased in-cylinder oxygen availability (either by using oxygenated fuels or by increasing the oxygen percentage of intake air) on direct injection (DI) diesel engine performance characteristics and pollutant emissions. Simulations are produced for a single-cylinder DI diesel engine (“Lister LV1”) by keeping constant the oxygen content of in-cylinder fuel/air mixture and the engine brake torque. The effects of the two oxygen-enhancement techniques on combustion characteristics, soot and NO concentrations inside the combustion chamber are examined using model predictions for a common diesel oil, a neat oxygenate and the case of increasing the oxygen fraction of intake air. The multi-zone model is also utilized to interpret the relative impact of fuel-side and air-side oxygen on soot formation mechanism by examining the temporal evolution of combustion characteristics and soot formation and oxidation rates inside the fuel jet zones. Evaluation of the theoretical results revealed that the increase of in-cylinder oxygen availability by both techniques resulted in earlier initiation of combustion, increase of peak cylinder pressure and increase of in-cylinder and exhaust NO concentrations. It resulted also in reduction of exhaust gas temperature and exhaust soot values. Fuel oxygen addition was proven to be more influential on combustion process and consequently, on soot and NO formation mechanism compared to oxygen-enhancement of intake air. This is attributed to the higher oxygen availability inside each fuel jet zone, which is observed in the case of oxygenated fuel combustion.
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Mortimer, Joel, Stephen Yoannidis, Farzad Poursadegh, Zhewen Lu, Michael Brear, Yi Yang, David Etherington, Marcel Heijkoop, and Joshua Lacey. "An Experimental and Numerical Study of a Hydrogen Fueled, Directly Injected, Heavy Duty Engine at Knock-Limited Conditions." In ASME 2020 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icef2020-2920.
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Abstract This paper presents an experimental and numerical study of a directly injected, spark-ignited (DI SI), heavy duty hydrogen fueled engine at knock-limited conditions. The impact of air-fuel ratio and ignition timing on engine performance is first investigated experimentally. Two-zone combustion modeling of the hydrogen fueled cylinder is then used to infer burn profiles and unburned, end-gas conditions using the measured in-cylinder pressure traces. Simulation of the autoignition chemistry in this end-gas is then undertaken to identify key parameters that are likely to impact knock-limited behavior. The experiments demonstrate knock-limited performance on this high compression ratio engine over a wide range of air-fuel ratios, λ. Other trends with λ are qualitatively similar to those shown in previous studies of hydrogen fueled engines. Kinetic simulations then suggest that some plausible combination of residual nitric oxide from previous cycles and locally high charge temperatures at intake valve closing can lead to autoignition at the knock-limited conditions identified in the experiments. This prompts a parametric study that shows how increased λ makes hydrogen less likely to autoignite, and suggests options for the design of high efficiency, directly injected, hydrogen fueled engines.
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Hountalas, Dimitrios T., Georgios N. Zovanos, David Sakellarakis, and Antonios K. Antonopoulos. "Validation of Multi-Zone Combustion Model Ability to Predict Two Stroke Diesel Engine Performance and NOx Emissions Using on Board Measurements." In ASME 2012 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ices2012-81100.
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Diesel engines are almost exclusively used for propulsion of marine vessels. They are also used for power generation either on vessels or power stations because of their superior efficiency, high power concentration, stability and reliability compared to other alternative power systems. However, a significant drawback of these engines is the production of exhaust gases some of which are toxic and thus can be a threat to the environment. The most important toxic gaseous pollutants found in the exhaust gas of a marine diesel engine are NOx (NO, NO2 etc), CO and SOx. Particulate matter is also a major pollutant of diesel. Currently CO2 is considered to be also a “pollutant”, even though not being directly toxic, due to its impact on global warming. In the Marine sector there exists legislation for marine diesel engine NOx emissions which is getting stricter as we move on towards Tier III. This brings new challenges for the engine makers as far as NOx control and its reduction is concerned. Towards this effort of NOx reduction, modelling has an important role which will become even more important in the future. This is mainly attributed to the large size of marine engines which makes the use of experimental techniques extremely expensive and time consuming. Modelling can greatly assist NOx reduction efforts at least at the early stages of development leading to cost reduction. As known NOx emissions are strongly related to engine performance and thus efforts for their reduction usually have a negative impact on efficiency and particulate matter. Modelling can play an important role towards this direction because optimization techniques can be applied to determine the optimum design for NOx reduction with the lowest impact on efficiency. At present an effort is made to apply an existing well validated multi-zone combustion model for DI diesel engines on a 2-stroke marine diesel engine used to power a tanker vessel. The model is used to determine both engine performance and NOx emissions at various operating conditions. To validate model’s ability to predict performance and NOx emissions, a comparison is given against data obtained from the vessel official NOx file and from on board measurements conducted by the present research group. On board performance measurements were conducted using an in-house engine diagnostic system while emissions were recorded using a portable exhaust gas analyzer. From the comparison of measured against predicted data, the ability of the model to adequately predict performance and NOx emissions of the slow speed 2-stroke marine diesel engine examined is demonstrated. Furthermore, from the application are revealed specific problems related to the application of such models on large slow speed two-stroke engines which is significantly important for their further development.
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Papagiannakis, Roussos G., Elias A. Yfantis, Dimitrios T. Hountalas, and Theodoros C. Zannis. "Theoretical Investigation of the Factors Affecting the Performance of a High Speed DI Diesel Engine Fuelled With Natural Gas." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66953.
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Reduction of exhaust emissions is a major research task in diesel engine development in view of increasing concern regarding environmental protection and stringent exhaust gas regulations. Simultaneous reduction of NOx emissions and particulate matter is quite difficult due to the soot/NOx trade-off and is often accompanied by fuel consumption penalties. Towards this aim, automotive engineers have proposed various solutions, one of which is the use of alternative gaseous fuels as a supplement for the commercial liquid diesel fuel. This type of engine, which operates fuelled simultaneously with conventional diesel oil and gaseous fuel, is called “dual fuel” diesel engine. Among alternative gaseous fuels, natural gas is considered to be quite promising due to its low cost and its higher auto-ignition temperature compared to other gaseous fuels facilitating thus its use on existing diesel engines. Previous research studies revealed that natural gas/diesel engine operation results in deterioration of brake engine efficiency, CO and HC emissions compared to conventional diesel fuel operation. In attempt to curtail these negative effects, various theoretical and experimental studies were carried out examining the influence of various parameters such as pilot fuel quantity, diesel fuel injection timing advance and intake charge conditions on “dual fuel” engine performance characteristics and pollutant emissions. However, there are more to know about the proper combination of these engine parameters to attain the optimum results regarding reduction of CO and HC emissions without further deteriorating, if not improving, brake engine efficiency. Hence, in the present study, a theoretical investigation is conducted using an engine simulation model to examine the effect of the aforementioned parameters on performance and exhaust emissions of a natural gas/diesel engine. Predictions are produced for a high-speed natural gas/diesel engine performance characteristics and NO, CO and Soot emissions at diverse engine speeds and loads using a comprehensive two-zone combustion model. The main objective of this comparative assessment is to elaborate the relative impact of each one of the above mentioned parameters on engine performance characteristics and exhaust emissions. Furthermore, an endeavor is made to determine the optimum combinations of these engine operational parameters. The conclusions of this study may be proven to be considerably valuable for the application of this technology on existing DI diesel engines.
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Kumar, Harish, Sajjaat Muhemmed, and Hisham Nasr-El-Din. "The Role of CO2 in Carbonate Acidizing at the Field Scale – A Multi-Phase Perspective." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206033-ms.
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Abstract Most lab-scale acidizing experiments are performed in core samples with 100% water saturation conditions and at pore pressures around 1100 psi. However, this is seldom the case on the field, where different saturation conditions exist with high temperature and pressure conditions. Carbon-di-Oxide (CO2), a by-product evolved during the acidizing process, is long thought to behave inertly during the acidizing process. Recent investigations reveal that the presence of CO2 dynamically changes the behavior of wormhole patterns and acid efficiency. A compositional simulation technique was adopted to understand the process thoroughly. A validated compositional numerical model capable of replicating acidizing experiments at the core-scale level, in fully aqueous environments described in published literature was utilized in this study. The numerical model was extended to a three-phase environment and applied at the field scale level to monitor and evaluate the impacts of evolved CO2 during the carbonate acidizing processes. Lessons learned from the lab-scale were tested at the field-scale scenario via a numerical model with radial coordinates. Contrary to popular belief, high pore pressures of 1,000 psi and above are not sufficient to keep all the evolved CO2 in solution. The presence of CO2 as a separate phase hinders acid efficiency. The reach or extent of the evolved CO2 is shown to exist only near the damage zone and seldom penetrates the reservoir matrix. Based on the field scale model's predictions, this study warrants conducting acidizing experiments at the laboratory level, at precisely similar pressure, temperature, and salinity conditions faced in the near-wellbore region, and urges the application of compositional modeling techniques to account for CO2 evolution, while studying and predicting matrix acidizing jobs.
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Papagiannakis, Roussos G., Theodoros C. Zannis, Elias A. Yfantis, and Dimitrios T. Hountalas. "Comparative Evaluation of the Effect of Intake Charge Temperature, Pilot Fuel Quantity and Injection Advance on Dual Fuel Compression Ignition Engine Performance Characteristics and Emitted Pollutants." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10435.
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The simultaneous reduction of nitrogen oxide emissions and particulate matter in a compression ignition environment is quite difficult due to the soot/NOx trade off and it is often accompanied by fuel consumption penalties. Thus, fuel reformulation is also essential for the curtailment of diesel pollutant emissions along with the optimization of combustion-related design factors and exhaust after-treatment equipment. Various solutions have been proposed for improving the combustion process of conventional diesel engines and reducing the exhaust emissions without making serious modifications on the engine, one of which is the use of natural gas as a supplement for the conventional diesel fuel (Dual Fuel Natural Gas/Diesel Engines). Natural gas is considered to be quite promising since its cost is relative lower compared to conventional fuels and it has high auto-ignition temperature compared to other gaseous fuels facilitating thus its use on future and existing fleet of small high speed direct injection diesel engines without serious modifications on their structure. Moreover, natural gas does not generate particulates when burned in engines. The most common natural gas/diesel operating mode is referred to as the Pilot Ignited Natural Gas Diesel Engine (P.I.N.G.D.E). Here, the primary fuel is natural gas that controls the engine power output, while the pilot diesel fuel injected near the end of the compression stroke autoignites and creates ignition sources for the surrounding gaseous fuel mixture to be burned. Previous research studies have shown that the main disadvantage of this dual fuel combustion is its negative impact on engine efficiency compared to the normal diesel operation, while carbon monoxide emissions are also increased. The specific engine operating mode, in comparison with conventional diesel fuel operation, suffers from low brake engine efficiency and high carbon monoxide (CO) emissions. The influence becomes more evident at part load conditions. Intake charge temperature, pilot fuel quantity and injection advance are some of the engine parameters which influence significantly the combustion mechanism inside the combustion chamber of a Pilot Ignited Natural Gas Diesel Engine. In order to be examined the effect of these parameters on performance and exhaust emissions of a natural gas/diesel engine a theoretical investigation has been conducted by using a numerical simulation. In order to be examined the effect of increased air inlet temperature combined with increased pilot fuel quantity and its injection timing on performance and exhaust emissions of a pilot ignited natural gas-diesel engine, a theoretical investigation has been conducted by using a comprehensive two-zone phenomenological model. The results concerning engine performance characteristics and NO, CO and Soot emissions for various engine operating conditions (i.e. load and engine speed), comes from the employment of a comprehensive two-zone phenomenological model which had been applied on a high-speed natural gas/diesel engine. The main objectives of this comparative assessment are to record and to comparatively evaluate the relative impact each one of the above mentioned parameters on engine performance characteristics and emitted pollutants. Furthermore, the present investigation deals with the determining of optimum combinations between the parameters referred before since at high engine load conditions, the simultaneous increase some of the specific parameters may lead in undesirable results about engine performance characteristics. The conclusions of the specific investigation will be extremely valuable for the application of this technology on existing DI diesel engines.
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Khosravi, Mahdiar, Jeremy Rochussen, Jeff Yeo, Patrick Kirchen, Gordon McTaggart-Cowan, and Ning Wu. "Effect of Fuelling Control Parameters on Combustion Characteristics of Diesel-Ignited Natural Gas Dual-Fuel Combustion in an Optical Engine." In ASME 2016 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icef2016-9399.
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Its inherent economic and environmental advantages as an internal combustion engine fuel make natural gas (NG) an attractive alternative to diesel fuel as the primary energy source for some compression ignition (CI) engine applications. Diesel pilot-ignition of NG is an attractive fueling strategy as it typically requires minimal modification of existing CI engines. Furthermore, this strategy makes use of the highly developed direct injection (DI) diesel fuel systems already employed on modern CI engines for to control dual-fuel (DF) combustion. Despite the increasing popularity of the dual-fuel NG engine concept, the fundamental understanding of the fuel conversion mechanisms and the impact of the fueling parameters is still incomplete. A conceptual understanding of the relevant physics is necessary for further development of fueling and pilot-ignition strategies to address the shortcomings of dual-fuel combustion, such as low-load emissions and combustion stability. An experimental facility supporting optical diagnostics via a Bowditch piston arrangement in a 2-litre, single-cylinder research engine (Ricardo Proteus) was used in this study to consider the effect of fueling parameters on the fuel conversion process in a dual fuel engine. Fueling was achieved with port injected CH4 and diesel direct injection using a common rail system. Simultaneous, high-speed natural luminosity (NL) and OH* chemiluminescence imaging was used to characterize dual-fuel combustion and the influence of pilot injection pressure (300 bar vs. 1300 bar) and relative diesel-CH4 ratios (pilot ratio, PR), as these have been noted as key operating dual-fuel control metrics. The pilot injection pressure was observed to have a significant impact on the fuel conversion process. At higher pilot injection pressures, the auto-ignition sites were concentrated around the piston bowl periphery and the reaction zone propagated towards the center of the bowl. At lower pilot injection pressures, ignition initiated in the vicinity of the pilot fuel jet structures and resulted in a more heterogeneous fuel conversion process with regions of intense natural luminosity, attributed to particulate matter. An increase in the pilot ratio (i.e., increased diesel fraction) resulted in a more aggressive combustion event, due to a larger fraction of energy released in a premixed auto-ignition event. This was coupled with a decrease in the fraction of the combustion chamber with significant OH* or NL light emission, indicating incomplete fuel conversion in these regions. The insight to the dual-fuel conversion processes presented in this work will be ultimately used to develop dual-fuel injection strategies, as well as provide much needed validation data for modeling efforts.