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Desde una perspectiva social, los centros históricos representan un factor de identidad e imagen de una ciudad, en un doble papel de reconocimiento “hacia afuera”, por la imagen que transmite de sí misma, como “hacia dentro”, por la identificación que cada habitante tiene de esta. Pero los centros históricos también pierden valor simbólico y representativo debido al desinterés y desidia de las administraciones urbanas, que se evidencia, entre otros aspectos, en la segregación de las dinámicas sociales que en ellos se presenta.
O significado de mercado não deve ficar adstrito à interação entre procura e oferta por ir além do processo de compra e venda, ao compreender interações econômicas, sociais e culturais. Apesar de serem vistos como espaços onde ocorrem trocas, conversações e negociações para a realização de transações comerciais entre as partes envolvidas, como ocorre em feiras e entrepostos de comercialização é fato que os mercados possuem importância crucial na vida das pessoas. Eles influenciam a organização social, política e cultural das sociedades. A produção agrícola no Submédio São Francisco está concentrada em fruticultura tropical ( manga, uva, coco, acerola e banana ) ...
This book covers the biotechnology of all the major fruit and nut species. Since the very successful first edition of this book in 2004, there has been rapid progress for many fruit and nut species in cell culture, genomics and genetic transformation, especially for citrus and papaya. This book covers both these cutting-edge technologies and regeneration pathways, protoplast culture, in vitro mutagenesis, ploidy manipulation techniques that have been applied to a wider range of species. Three crop species, Diospyros kaki (persimmon), Punica granatum (pomegranate) and Eriobotrya japonica (loquat) are included for the first time. The chapters are organized by plant family to make it easier to make comparisons and exploitation of work with related species. Each chapter discusses the plant family and the related wild species for 38 crop species, and has colour illustrations. It is essential for scientists and post graduate students who are engaged in the improvement of fruit, nut and plantation crops.
This report provides estimates of investment costs, both public and private, required to eliminate chronic dietary energy deficits, or to achieve zero hunger by 2030. This target is consistent with achieving both the Sustainable Development Goal 2, to eliminate hunger by 2030, and the Sustainable Development Goal 1, to eradicate poverty. The report adopts a reference “baseline” scenario, reflecting a “business-as-usual” situation, to estimate the additional investment requirements. In this scenario, around 650 million people will still suffer from hunger in 2030. The investment requirements to eliminate hunger by 2030 are then estimated. Hunger is eliminated through a combination of ...
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Research into the methods and techniques used in simulating crowds has developed extensively within the last few years, particularly in the areas of video games and film. Despite recent impressive results when simulating and rendering thousands of individuals, many challenges still exist in this area. The comparison of simulation with reality, the realistic appearance of virtual humans and their behavior, group structure and their motion, and collision avoidance are just some examples of these challenges. For most of the applications of crowds, it is now a requirement to have real-time simulations – which is an additional challenge, particularly when crowds are very large. Crowd Simulation...
Among the Horticultural Crops, Fruits and Vegetables (FV) are of primary - portance as the key source of essential components in an adequate and balanced human diet. FV have supported largely the daily food requirement of mankind since ages and even before man learned to grow cereal crops systematically. Over the years, growing FV has been the mainstay of rural economy and has emerged as an indispensable part of agriculture world over, offering farmers a wide range of crops in varied topography and climate. In certain parts of the world, FV are the major dietary staple. Apart from being a rich source of vitamins and minerals, this sector also contributes significantly in economy of the regio...