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Author: Mohamed Nabil Saidi
Publisher:
ISBN:
Category :
Languages : fr
Pages : 150
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Book Description
La reconnaissance automatique de cibles radar trouve de nombreuses applications en environnement incertain aérien et maritime. Par exemple, pour le cas du trafic des navires qui devient de plus en plus important, et pour le cas des risques de pollution qui sont toujours présents au quotidien. Il s’avère donc nécessaire d’introduire des méthodes originales permettant la mise à disposition de traitements automatiques pour l’aide à la reconnaissance de cibles à partir des images radar ISAR (Inverse Synthetic Aperture Radar). D’autre part, le volume de données radar devient de plus en plus très important, ceci conduit à l’étude des méthodes semi-automatiques de reconnaissance en faisant intervenir l’opérateur humain dans le processus. La méthodologie adoptée dans le cadre de cette thèse est inspirée du processus d’extraction de connaissances à partir de données (ECD). Le processus ECD, adapté au domaine radar, est constitué de quatre grandes phases allant de l’acquisition et la préparation des données (prétraitement des données et extraction des paramètres) jusqu’à l’interprétation et l’évaluation des résultats, en passant par la phase de classification. Après l’acquisition des signaux radar et la reconstruction des images ISAR par l’analyse de Fourier, l’extraction des caractéristiques les plus discriminantes et en particulier, celles de la forme est réalisée. Dans la phase de classification, nous utilisons dans un premier temps les méthodes de classification telles que les machines à vecteur de support et les k plus proches voisins et dans un deuxième temps nous étudions l’influence de la fusion d’informations sur les performances globales de reconnaissance. Enfin, nous proposons une autre approche qui fait inclure la pose de la cible au sein du système de reconnaissance.
Author: Mohamed Nabil Saidi
Publisher:
ISBN:
Category :
Languages : fr
Pages : 150
Get Book Here
Book Description
La reconnaissance automatique de cibles radar trouve de nombreuses applications en environnement incertain aérien et maritime. Par exemple, pour le cas du trafic des navires qui devient de plus en plus important, et pour le cas des risques de pollution qui sont toujours présents au quotidien. Il s’avère donc nécessaire d’introduire des méthodes originales permettant la mise à disposition de traitements automatiques pour l’aide à la reconnaissance de cibles à partir des images radar ISAR (Inverse Synthetic Aperture Radar). D’autre part, le volume de données radar devient de plus en plus très important, ceci conduit à l’étude des méthodes semi-automatiques de reconnaissance en faisant intervenir l’opérateur humain dans le processus. La méthodologie adoptée dans le cadre de cette thèse est inspirée du processus d’extraction de connaissances à partir de données (ECD). Le processus ECD, adapté au domaine radar, est constitué de quatre grandes phases allant de l’acquisition et la préparation des données (prétraitement des données et extraction des paramètres) jusqu’à l’interprétation et l’évaluation des résultats, en passant par la phase de classification. Après l’acquisition des signaux radar et la reconstruction des images ISAR par l’analyse de Fourier, l’extraction des caractéristiques les plus discriminantes et en particulier, celles de la forme est réalisée. Dans la phase de classification, nous utilisons dans un premier temps les méthodes de classification telles que les machines à vecteur de support et les k plus proches voisins et dans un deuxième temps nous étudions l’influence de la fusion d’informations sur les performances globales de reconnaissance. Enfin, nous proposons une autre approche qui fait inclure la pose de la cible au sein du système de reconnaissance.
Author: Andrew McAfee
Publisher: W. W. Norton & Company
ISBN: 0393254305
Category : Business & Economics
Languages : en
Pages : 297
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Book Description
“A clear and crisply written account of machine intelligence, big data and the sharing economy. But McAfee and Brynjolfsson also wisely acknowledge the limitations of their futurology and avoid over-simplification.” —Financial Times In The Second Machine Age, Andrew McAfee and Erik Brynjolfsson predicted some of the far-reaching effects of digital technologies on our lives and businesses. Now they’ve written a guide to help readers make the most of our collective future. Machine | Platform | Crowd outlines the opportunities and challenges inherent in the science fiction technologies that have come to life in recent years, like self-driving cars and 3D printers, online platforms for renting outfits and scheduling workouts, or crowd-sourced medical research and financial instruments.
Author: Andrea Maloney Schara
Publisher:
ISBN: 9780615928791
Category : Families
Languages : en
Pages : 318
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Book Description
"Your Mindful Compass" takes us behind the emotional curtain to see the mechanisms regulating individuals in social systems. There is great comfort and wisdom in knowing we can increase our awareness to manage the swift and ancient mechanisms of social control. We can gain greater flexibility by seeing how social controls work in systems from ants to humans. To be less controlled by others, we learn how emotional systems influence our relationship-oriented brain. People want to know what goes on in families that give rise to amazing leaders and/or terrorists. For the first time in history we can understand the systems in which we live. The social sciences have been accumulating knowledge since the early fifties as to how we are regulated by others. S. Milgram, S. Ashe, P. Zimbardo and J. Calhoun, detail the vulnerability to being duped and deceived and the difficulty of cooperating when values differ. Murray Bowen, M.D., the first researcher to observe several live-in families, for up to three years, at the National Institute of Mental Health. Describing how family members overly influence one another and distribute stress unevenly, Bowen described both how symptoms and family leaders emerge in highly stressed families. Our brain is not organized to automatically perceive that each family has an emotional system, fine-tuned by evolution and "valuing" its survival as a whole, as much as the survival of any individual. It is easier to see this emotional system function in ants or mice but not in humans. The emotional system is organized to snooker us humans: encouraging us to take sides, run away from others, to pressure others, to get sick, to blame others, and to have great difficulty in seeing our part in problems. It is hard to see that we become anxious, stressed out and even that we are difficult to deal with. But "thinking systems" can open the doors of perception, allowing us to experience the world in a different way. This book offers both coaching ideas and stories from leaders as to strategies to break out from social control by de-triangling, using paradoxes, reversals and other types of interruptions of highly linked emotional processes. Time is needed to think clearly about the automatic nature of the two against one triangle. Time and experience is required as we learn strategies to put two people together and get self outside the control of the system. In addition, it takes time to clarify and define one's principles, to know what "I" will or will not do and to be able to take a stand with others with whom we are very involved. The good news is that systems' thinking is possible for anyone. It is always possible for an individual to understand feelings and to integrate them with their more rational brains. In so doing, an individual increases his or her ability to communicate despite misunderstandings or even rejection from important others. The effort involved in creating your Mindful Compass enables us to perceive the relationship system without experiencing it's threats. The four points on the Mindful Compass are: 1) Action for Self, 2) Resistance to Forward Progress, 3) Knowledge of Social Systems and the 4) The Ability to Stand Alone. Each gives us a view of the process one enters when making an effort to define a self and build an emotional backbone. It is not easy to find our way through the social jungle. The ability to know emotional systems well enough to take a position for self and to become more differentiated is part of the natural way humans cope with pressure. Now people can use available knowledge to build an emotional backbone, by thoughtfully altering their part in the relationship system. No one knows how far one can go by making an effort to be more of a self-defined individual in relationships to others. Through increasing emotional maturity, we can find greater individual freedom at the same time that we increase our ability to cooperate and to be close to others.
Author: Chanthalangsy, Phinith
Publisher: UNESCO Publishing
ISBN: 9231010069
Category : Philosophy
Languages : en
Pages : 236
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Book Description
Author:
Publisher:
ISBN:
Category : Comparative education
Languages : es
Pages : 312
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Book Description
Author: David Kaimowitz
Publisher: CRC Press
ISBN: 0429714246
Category : Science
Languages : en
Pages : 269
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Book Description
This book is about International Service for National Agricultural Research's (ISNAR) study to identify key factors that influenced the effectiveness and efficiency of links between research and technology transfer. It recommends ways to improve these links and reflects the progress made till date.
Author: Michael Jones
Publisher: Springer Science & Business Media
ISBN: 9048199328
Category : Science
Languages : en
Pages : 327
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Book Description
This important and insightful book provides, for the first time, a broad presentation of ongoing research into public participation in landscape conservation, management and planning, following the 2000 European Landscape Convention which came into force in 2004. The book examines both the theory of participation and what lessons can be learnt from specific European examples. It explores in what manner and to what extent the provisions for participation in the European Landscape Convention have been followed up and implemented. It also presents and compares different experiences of participation in selected countries from northern, southern, eastern and western Europe, and provides a critical examination of public participation in practice. However, while the book’s focus is necessarily on Europe, many of the conclusions drawn are of global relevance. The book provides a valuable reference for researchers and advanced students in landscape policies and management, as well as for professionals and others interested in land-use planning and environmental management.
Author:
Publisher: Getty Publications
ISBN: 089236551X
Category : Art
Languages : en
Pages : 281
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Book Description
Building an Emergency Plan provides a step-by-step guide that a cultural institution can follow to develop its own emergency preparedness and response strategy. This workbook is divided into three parts that address the three groups generally responsible for developing and implementing emergency procedures—institution directors, emergency preparedness managers, and departmental team leaders—and discuss the role each should play in devising and maintaining an effective emergency plan. Several chapters detail the practical aspects of communication, training, and forming teams to handle the safety of staff and visitors, collections, buildings, and records. Emergencies covered include natural events such as earthquakes or floods, as well as human-caused emergencies, such as fires that occur during renovation. Examples from the Barbados Museum and Historical Society, the Museo de Arte Popular Americano in Chile, the Mystic Seaport Museum in Connecticut, and the Seattle Art Museum show how cultural institutions have prepared for emergencies relevant to their sites, collections, and regions.
Author: Julien Talpin
Publisher: ECPR Press
ISBN: 1785520806
Category : Political Science
Languages : en
Pages : 168
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Book Description
Schools of Democracy offers a vivid analysis of the long-term impact of engagement in participatory budgeting institutions in Europe. While democratic innovations flourish around the world, there have been great hopes for their potential to revitalize representative government and solve the increasing apathy of the public. Based on a rich ethnographic study in France, Italy and Spain, this book shows how participatory institutions can encourage personal involvement, by creating the procedural and social conditions conducive to the formation of a competent and involved citizenry. Rather than deliberation itself, it seems that informal discussions and interactions between a diverse public allow mutual learning and the beginning of a political trajectory for people at the margins of the public sphere. However, this book also shows that citizens can become disappointed by the little decision-making power they are granted, as they leave the process often more cynical than before. Contains: A unique study on the long-term individual impact of engagement in participatory institutions. While most research deal with short-term impact, Schools of democracy addresses impact of participation after two years of engagement. Unique access to the black box of participatory institutions. While research on democratic innovations generally opt for an externalist perspective, Schools of democracy details the routine of deliberative interactions, showing how ordinary citizens speak up in public assemblies. From this perspective, the book offers incredibly rich empirical material – coming from ethnographic research – on how participatory democracy works. An original theoretical framework to the study of the individual impacts of participatory engagement. While most research are based on an implicit rational choice perspective, the pragmatist perspective adopted here sheds a different light on the studied phenomenon, stressing the co-construction of actors and their environment.
Author: Pascal Sanginga
Publisher: Routledge
ISBN: 1136562958
Category : Business & Economics
Languages : en
Pages : 432
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Book Description
'Innovation by with and for farmers in Africa is one of the major contemporary challenges of development. This book will be essential reading for anyone interested in these issues.' Professor Ian Scoones Institute of Development Studies at the University of Sussex UK 'This book takes the theme of innovation and its mainstreaming in research and extension a major step forward. I am impressed by the wide range of subjects and the diversity of authors.' Chris Reij Vrije Universiteit Amsterdam The Netherlands Agricultural research extension and education can contribute greatly to enhancing agricul.
