This paper analyzes the link between rising city crime rates and urban  ight. Each additional reported crime is associated with a roughly one-person decline in city population. Almost all of the crime-related population decline is attributable to increased out-migration rather than a decrease in new arrivals. Households that leave the city because of crime are much more likely to remain within...

An account of nine Agarics, namely, Macrolepiota procera, M. rhacodes. Lepiota leprica, L. holospilota, Coprinus comatus, C. plicatilis, C. scobicola, C. disseminatus and C. flocculosus, were collected from different localities that is Noor city of Mazandaran, Maragheh city of East Azarbaijan and Karaj and Varamin cities of Tehran province are described in details. Species namely Lepiota lepric...

Retrieving the causes of road traffic congestions in quasi real-time is an important task that will enable city managers to get better insight into traffic issues and thus take appropriate corrective actions in a timely way. Our work, accepted at ISWC 2012, tackles this problem by integrating and reasoning over a variety of heterogeneous data sources including data streams. In this paper we pre...

while accounting for the requirements associated with the target network? These include scalability, energy-efficiency and privacy preservation. Sensing the 'city pulse' brings challenges for the supporting data management which must scale-up, as well as integrate highly heterogeneous data of various qualities. The literature is rich with papers addressing these concerns individually. However, ...

This paper examines the relative effect of changes in tax rates under three differing taxation schemes. Unlike previous modeling attempts, our analysis is performed at a relatively small scale, namely that of a city. We use a data intensive computable general equilibrium (CGE) model of a small city and attempt to analyze the effects on local residents’ real incomes, city revenues and economic g...

Volunteered Geographic Information (VGI) tools appear to enhance the possibilities offered by a collaborative approach to planning. The present paper analyzes both the results of experiences of the author and of those available in the literature, highlighting possible advantages and disadvantages. After a brief introduction to the meaning of e-democracy, the second part focuses on the role of I...

Following the occurrence of unexpected events and natural disasters, a highly important relief operation is the transferring of relief commodities from the distribution centers (CDs) to shelters. In this paper, a three-level network consisting of depot of vehicles, distribution centers and shelters has been considered for routing and scheduling of relief vehicles through introducing a multi-obj...

This paper describes a research approach based on the Actor-Network Theory (ANT) to interpret and understand the Korea’s strategy for the development of the ubiquitous city (u-city). Analyzing empirical materials from u-city development, this study traces and unpacks the interaction occurring around the u-city innovation and also identifies patterns of innovation, concentrating on negotiation a...

In this paper I discuss the digital city as a comprehensive, web-based representation, or reproduction, of several aspects or functions of a specific real city, open to nonexperts. Much more than a technical and practical issue, the digital city has dimensions that are social, cultural, political, ideological, and of course also theoretical. I explore these broader conceptual underpinnings of t...

this study aims to offer a sociological explanation of influential factors on the rate of tendency toward divorce in kermanshah city. a combination of homogamy theory, exchange theory, and network theory is used as the theoretical framework of the study. the study has been conducted via survey method and data is collected through questionnaire and interview. the statistical sample of study cons...