the notion of sustainable development has rapidly gained considerable attention since the lastdecades of the twentieth century. it has become a locus for global paradigm shift on environment and development issues particularly after rio conference in 1992. the comparative analysis of agenda 21 and major un documents, mdg, and rio+20 as well as some major sources are made to provide a context fo...

Klinz and Woeginger (1995) prove that the minimum cost quickest flow problem is NP-hard. On other hand, can be solved efficiently via a straightforward reduction to without costs. More generally, we show how transshipment reduced solvable problem, thus adding another mosaic tile rich complexity landscape of flows over time.

Utilizing 1-minute resolution data on the geomagnetic indices SYM-H, AE, solar wind parameters (velocity Vsw and density Np), z-component Bz of interplanetary magnetic field (IMF) during cycles 23 24, we have statistically analyzed correlations between activity (storms substorms), Vsw, Np, Bz, energy coupling functions Earth’s magnetosphere. For selected 131 CME-driven storms, SYM-H stronger de...

the scientific panel on “landscape ecology” was held in nazar research center by presence of professors and experts in “landscape” and “ecology”, in order to discuss the relation of these concepts and definition of “landscape ecology”. in this panel arranged by dr. seyed amir mansouri, director of landscape architecture department at university of tehran and president of nazar research center, ...

The landscape pattern of Daqing City, China has undergone a significant change during the last two decades as a result of rapid urbanization. A quantitative analysis describing the spatial fragmentation caused by urban sprawl from satellite images was presented on three dates: 1979, 1990, and 2000. Five landscape indices with supplementary ecological meanings were chosen to facilitate our exami...

Spatial heterogeneity, in the wide sense of pattern complexity and variability, appears to be one of the dominant causes of ecological functions and processes. The most widely used quantification of heterogeneity in environmental studies is based on 10 derived Shannon information theory indices. Yet, such heterogeneity index is not able to quantify the surface patterns of a landscape with a ful...

Analyzing evolution characteristics of landscape ecological risk patterns would help establish ecological risk early warning mechanism, reduce the ecological risk probability and promote coastal landscape pattern optimization. In this study, landscape pattern indices were first calculated by using multitemporal Landsat TM images acquired in years 1990, 2000 and 2010, then landscape ecological r...

This paper presents results from a production experiment in Hindi, showing that differences in attachment site of object relative clauses result in prosodic differences when the antecedent of the relative clause (RC) is part of a complex NP with the structure N1 of N2. In particular, based on duration and F0 data we argue that the phrasing in a matrix sentence encodes the attachment site of the...

The Game Description Language (GDL) used in General Game Playing (GGP) competitions provides a compact way to express multi-agents systems. Multiple features of GDL contribute to making it a convenient tool to describe multi-agent systems. We study the computational complexity of reasoning in GGP using various combinations of these features. Our analysis offers a complexity landscape for GGP wi...