Download or read book ANALYSE DE SEQUENCES D IMAGES SATELLITAIRES ET DETERMINATION DES MODIFICATIONS GEOGRAPHIQUES DES PAYSAGES written by MIGUEL.. MOCTEZUMA-FLORES and published by . This book was released on 1995 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE CONCERNE L'ANALYSE DE DONNEES SATELLITAIRES POUR L'OBTENTION D'INFORMATIONS SUR LA DYNAMIQUE DE SCENES MULTI-TEMPORELLES. DES IMAGES MULTI-SPECTRALES AINSI QUE DES IMAGES SAR ONT ETE UTILISEES DANS DEUX APPLICATIONS EXPERIMENTALES. DANS LA PREMIERE APPLICATION, UNE METHODOLOGIE DE SUIVI AUTOMATIQUE DES GLACES DE MER EST PROPOSEE. CELLE-CI FAIT APPEL A DES IMAGES NOAA-AHVRR ET PREND EN COMPTE DEUX ASPECTS: L'UTILISATION D'IMAGES PARTIELLEMENT NUAGEUSES, ET L'ESTIMATION DU MOUVEMENT LINEAIRE QUI ANIME LES REGIONS DES GRANDES BANQUISES (ICE PACK). TOUT D'ABORD, UNE TECHNIQUE DE CLASSIFICATION PERMET DE DEBARRASSER LES IMAGES DES PERTURBATIONS NUAGEUSES SUR LA MER. PUIS UN FILTRE OPTIMAL DE MISE EN CORRESPONDANCE EST UTILISE POUR L'ESTIMATION DU MOUVEMENT DE LA GLACE DE MER. UN FILTRAGE RECURSIF EST AUSSI INTRODUIT POUR LA DETECTION ET L'INTEGRATION AU CHAMP VECTORIEL DES MAUVAISES MISES EN CORRESPONDANCE. ENFIN, PAR UNE TECHNIQUE D'INTERPOLATION POLYNOMIALE, UN SCHEMA DE PROPAGATION EST CHARGE DE PROJETER LES ESTIMATIONS OBTENUES PAR COUPLES D'IMAGES SUR LA SEQUENCE D'IMAGES QUE L'ON ANALYSE. LES CHAMPS VECTORIELS OBTENUS SONT HOMOGENES DANS LES REGIONS DE GRANDES BANQUISES (CENTRAL ICE PACK) TANDIS QUE DANS LES REGIONS MARGINALES (MARGINAL ICE ZONES) LE MOUVEMENT NON LINEAIRE EST GROSSIEREMENT ESTIME. DANS LA SECONDE APPLICATION, UNE NOUVELLE METHODE EST PROPOSEE POUR DETECTER LES TRAITS DE COTE D'IMAGES SAR. CE TYPE DE TRAITEMENT EST TRES IMPORTANT POUR LA DESCRIPTION DES REGIONS COTIERES. DES ETUDES DE CARTOGRAPHIE, DE GEOGRAPHIE AINSI QUE DE NAVIGATION AUTOMATIQUE ONT BESOIN D'INFORMATIONS PRECISES SUR LES TRAITS DE COTE. UN PROBLEME IMPORTANT DU TRAITEMENT D'IMAGES SAR EST INTRODUIT PAR LE SPECKLE. POUR PALLIER CET INCONVENIENT, ON PROPOSE L'UTILISATION DES CHAMPS DE MARKOV (MRFS) DANS DEUX NIVEAUX DE RESOLUTION SPATIALE. A UNE FAIBLE RESOLUTION UNE SEGMENTATION GROSSIERE EST OBTENUE PAR UN MRF. PUIS ON FAIT APPEL A LA SOUPLESSE DES MRFS POUR DEFINIR UNE TOPOLOGIE A TROUS QUI REDUIT LES INCONVENIENTS DES APPROCHES CLASSIQUES (I. E. SURSEGMENTATIONS). ENSUITE, LA SEGMENTATION INITIALE EST PROJETEE SUR LA PLEINE RESOLUTION ET UNE SECONDE SEGMENTATION EST EFFECTUEE PAR UN MODELE D'ISING. DES APPLICATIONS SUR DES IMAGES JERS-1 ET ERS-1 DEMONTRENT LA PERFORMANCE DE NOTRE METHODE.
Download or read book Oceans 94 written by and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1994 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring soils in the environment with remote sensing and gis written by Richard Escadafal and published by IRD Orstom. This book was released on 1996 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: ISSS congress remote sensing
Download or read book Bioclimatology and Biogeography of Africa written by Henry N. Houérou and published by Springer Science & Business Media. This book was released on 2008-12-10 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering an area of over 130 million km2 spanning the Mediterranean, equator and tropics, the African continent features a spectacular geographic diversity. Consequently, it is characterised by extremely variable climatic, edaphic and ecological conditions, associated with a wide range of natural vegetation and wildlife, as well as human population density, crops and livestock. In this book, Henry Le Houérou presents his bioclimatic and biogeographic classification of Africa. The extensive data provide the basis for comparisons between various African regions, and with regions on other continents such as Latin America or the Indian subcontinent. The results constitute a rational basis for national, regional and sub-regional rural development planning, and for agricultural research dealing with aspects such as plant and animal introductions, the extrapolation or interpolation of experimental or developmental findings, and ecosystems dynamics. Possible problems of applications are also examined.
Download or read book Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention written by Clive L. N. Ruggles and published by . This book was released on 2017-11-30 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This joint venture between ICOMOS, the advisory body to UNESCO on cultural sites, and the International Astronomical Union is the second volume in an ongoing exploration of themes and issues relating to astronomical heritage in particular and to science and technology heritage in general. It examines a number of key questions relating to astronomical heritage sites and their potential recognition as World Heritage, attempting to identify what might constitute "outstanding universal value" in relation to astronomy. "Heritage Sites of Astronomy and Archaeoastronomy--Volume 2" represents the culmination of several years' work to address some of the most challenging issues raised in the first ICOMOS-IAU Thematic Study, published in 2010. These include the recognition and preservation of the value of dark skies at both cultural and natural sites and landscapes; balancing archaeoastronomical considerations in the context of broader archaeological and cultural values; the potential for serial nominations; and management issues such as preserving the integrity of astronomical sightlines through the landscape.Its case studies are developed in greater depth than those in volume 1, and generally structured as segments of draft nomination dossiers. They include seven-stone antas (prehistoric dolmens) in Portugal and Spain, the thirteen towers of Chankillo in Peru, the astronomical timing of irrigation in Oman, Pic du Midi de Bigorre Observatory in France, Baikonur Cosmodrome in Kazakhstan, and Aoraki-Mackenzie International Dark Sky Reserve in New Zealand. A case study on Stonehenge, already a World Heritage Site, focuses on preserving the integrity of the solstitial sightlines.As for the first ICOMOS-IAU Thematic Study, a international team of authors including historians, astronomers and heritage professionals is led by Professor Clive Ruggles for the IAU and Professor Michel Cotte for ICOMOS.
Download or read book New Strategies in Locust Control written by S. Krall and published by Birkhäuser. This book was released on 2012-12-06 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.
Download or read book The Forests of the Congo Basin written by and published by . This book was released on 2014 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global and National Soils and Terrain Digital Databases SOTER written by Food and Agriculture Organization of the United Nations. Land and Water Development Division and published by Food & Agriculture Org.. This book was released on 1993 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biocultural Landscapes written by Sun-Kee Hong and published by Springer. This book was released on 2014-07-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the cultural and biological dimensions and values of landscapes, linking the concepts of biodiversity, landscape and culture and presenting an essential approach for landscape analysis, interpretation and sustainable dynamics. Early chapters explore the concepts and values of biocultural landscapes, before addressing the methodology to identify the relationship between biological and cultural diversity. The volume continuous with a series of case studies and with an exploration of the key role of biocultural diversity in contemporary landscape ecology. Readers will learn the importance of landscapes for different fields of natural and human sciences and are confronted to the trans-disciplinary nature of the landscape concept itself. A hierarchical approach to landscapes, in which they are composed of interacting (eco)systems, is shown to be essential in recognizing their emergent properties. In this work, the biocultural values of landscapes are explored through their diversity in geographical scopes, methodological approaches and conceptual assumptions. Authors from Asia, Europe and North-America present diverse research experiences and views on biocultural landscapes, their pattern, conservation and management. Landscape ecologists will find this work particularly appealing, as well as anyone with an interest in sustainable landscape development, nature conservation or cultural heritage management. This volume is the outcome of a symposium on “Biodiversity in Cultural Landscapes”, organized in the framework of the 8th IALE World Congress, held in Beijing in 2011.
Download or read book Managing Wetlands in Arid Regions written by El Hadji M. Sene and published by IUCN. This book was released on 2006 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Patterns and Processes in Forest Landscapes written by Raffaele Lafortezza and published by Springer Science & Business Media. This book was released on 2008-08-30 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing evidence suggests that the composition and spatial configuration – the pattern – of forest landscapes affect many ecological processes, including the movement and persistence of particular species, the susceptibility and spread of disturbances such as fires or pest outbreaks, and the redistribution of matter and nutrients. Understanding these issues is key to the successful management of complex, multifunctional forest landscapes, and landscape ecology, based on a foundation of island bio-geography and meta-population dynamic theories, provides the rationale to deal with this pattern-to-process interaction at different spatial and temporal scales. This carefully edited volume represents a stimulating addition to the international literature on landscape ecology and resource management. It provides key insights into some of the applicable landscape ecological theories that underlie forest management, with a specific focus on how forest management can benefit from landscape ecology, and how landscape ecology can be advanced by tackling challenging problems in forest (landscape) management. It also presents a series of case studies from Europe, Asia, North America, Africa and Australia exploring the issues of disturbance, diversity, management, and scale, and with a specific focus on how human intervention affects forest landscapes and, in turn, how landscapes influence humans and their culture. An important reference for advanced students and researchers in landscape ecology, conservation biology, forest ecology, natural resource management and ecology across multiple scales, the book will also appeal to researchers and practitioners in reserve design, ecological restoration, forest management, landscape planning and landscape architecture.
Download or read book Landscapes and Landforms of Turkey written by Catherine Kuzucuoğlu and published by Springer. This book was released on 2019-01-08 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on Turkish geomorphology offers location descriptions, based on their dynamics and evolution processes, including hydrology, tectonics, volcanism, slopes, coasts, ice/snow, and wind. It presents landforms as a result of evolution (Quaternary, Holocene, historic) and in relation to the elements determining and/or impacting this evolution (vegetation, soil, hydrology, geology, climate, sea level and human action) as well as the resulting landscapes. Richly illustrated with pictures from each site, including geomorphological maps and sections, it explains the risks associated with the geomorphological dynamics (on local and global scales), natural and/or cultural heritage (archaeology, prehistory, history, architectural specifications adapted to the landscape), as well as challenges for human society (endangered landscape, protection/conservation rules/statutes, posters/paintings.).
Download or read book NOAA Polar Orbiter Data Users Guide written by Katherine B. Kidwell and published by . This book was released on 1995 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
Download or read book PC ARCPLOT written by and published by . This book was released on 1994 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Forests of the Congo Basin written by Carlos de Wasseige and published by . This book was released on 2012 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2010 State of the Forest report (SOF) benefited from financial support from the European Union, the United States, Germany, France and UNESCO. It represents the collaborative effort of over 100 individuals from a diversity of institutions and the forestry administrations of the Central African countries. The SOF process began with the selection and definition of indicators relevant to monitoring the state of forests in Central Africa. The indicators are structured around three thematic areas: (i) forest cover; (ii) management of production forests; and (iii) conservation and biodiversity. They are presented in a hierarchical structure at the regional, national and management unit (i.e. logging concessions and protected areas) levels. The indicators were vetted by a representative panel of stakeholders of forest management in Central Africa. The indicators are used to guide an annual data collection process carried out between April and August by national groups of four to ten individuals working within the forestry administrations. The data reported on in the 2010 SOF were primarily collected in 2009 and 2010. Results were validated in national workshops attended by government officials as well as representatives of environmental NGOs, the private sector and development projects. The data provided an important basis for the authors of the 11 chapters of the 2010 SOF, which were under the coordination of a scientific committee of international renown. A final workshop was held 29-30 March, 2011 in Douala to review a draft report. Following amendments based on comments from a wide audience of experts the final layout was completed.
Download or read book Bibliography on Mangrove Research 1600 1975 written by and published by . This book was released on 1981 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
