Sustainable urban development is a new concept of fundamental environmental metropolitan management that not only creates the demand for changing the concepts of economic development, but also affects social development. The current study  provides  a conceptual model of a sustainable environment pattern In District 22 of Tehran that depends on the relationship between environment and economy, ...

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introduction urban landscape is experiencing rapid changes which put all urban domains under pressures. these processes revolutionize urban landscape into spaces without ecologic values. the sustainability of green patches and corridors has been scathed by lack of ecological approaches in planning and design. therefore, urban green spaces structures and functions have been damaged. green spaces...

Predators affect prey and their resources by changing the density and traits (e.g. morphology and behavior) of those prey. Ecological studies and models of community dynamics, however, typically only incorporate how changes in prey densities, rather than their traits, affect community dynamics. In a recent meta-analysis, Preisser et al. show that trait effects are as large, if not larger than d...

Unexpected sudden catastrophic shifts may occur in ecosystems, with concomitant losses or gains of ecological and economic resources. Such shifts have been theoretically attributed to positive feedback and bistability of ecosystem states. However, verifications and predictive power with respect to catastrophic responses to a changing environment are lacking for spatially extensive ecosystems. T...

This paper addresses the topic of online unsupervised speaker segmentation in a complex audio environment as it is present in the Broadcast News databases. A new two stage speaker change detection algorithm is proposed, which combines the Bayesian Information Criterion with an ABLS-SCD statistical framework where adapted Gaussian mixture models are used to achieve higher accuracy. To enhance th...

Differential Ks-band luminosity functions (LFs) are presented for a complete sample of 1613 nearby bright galaxies segregated by visible morphology. The LF for late-type spirals follows a power law that rises towards low luminosities whereas the LFs for ellipticals, lenticulars and bulge-dominated spirals are peaked and decline toward both higher and lower luminosities. Each morphological type ...

Epidemiological factors and changing ecological conditions have greatly facilitated the spread of sexually transmitted diseases and led to their rising incidence in Indonesia. Gonorrhoea is at present very prevalent, and drug resistance among circulating strains of gonococci is a contributing factor. Despite medical advances in both diagnosis and treatment of sexually transmitted diseases, thes...

1.Introduction 2.A Historical Perspective 3.Human Activities and Global Environmental Changes 3.1. The Changing Atmosphere 3.2. Changes in Land Use 3.3. Loss of Biological Diversity 4.General Ideas about Sustainable Development 5.An Economics Approach 6.A Biogeochemical Approach 7.A Sociocultural Approach 8.International Cooperation 8.1. Regional and Global Alliance 8.2. The 1992 Earth Summit 9...

meet Bakhai, MD, MRCP,*† Gregg W. Stone, MD,‡ Elizabeth Mahoney, SCD,* Tara A. Lavelle, BA,* hunxue Shi, MS,* Ronna H. Berezin, MPH,* Betsy J. Lahue, MPH,§ Mary Ann Clark, MHA,§ ichael J. Lacey, MS,§ Mary E. Russell, MD,§ Stephen G. Ellis, MD, James B. Hermiller, MD,¶ avid A. Cox, MD,# David J. Cohen, MD, MSC,*** on behalf of the TAXUS-IV Investigators oston and Natick, Massachusetts; Barnet, E...