Sentiment analysis of Twitter data is performed. The researcher has made the following contributions via this paper: (1) an innovative method for deriving sentiment score dictionaries using an existing sentiment dictionary as seed words is explored, and (2) an analysis of clustered tweet sentiment scores based on tweet length is performed.

Over the past decades, urban growth boundaries (UGBs) have been regarded as effective tools applied by planners and local governments to curb urban sprawl and guide urban smart growth. The UGBs help limit urban development to suitable areas and protect surrounding agricultural and ecological landscapes. At present, China’s Town and Country Planning Act officially requires the delimitation of UG...

At present the world is experiencing an extraordinary rate of urbanization. India is also in a major phase of urbanization. Almost all Indian cities have grown up beyond their limits. Thus, the ecological footprint, which is the ‘area of wilderness of both land and sea needed to supply resources to a human population and needed to assimilate human waste’ of these cities is at the warning stage....

Excessive unplanned urban growth leads to many vulnerabilities and impacts on urban environments to varying degrees. However, the majority of the extant literature focuses on the problems related to location and socioeconomic conditions, rather than vulnerability processes and related environmental degradation. This paper analyzes the scope of urban vulnerabilities for five rapidly urbanizing a...

Motivated by the study of decipherability conditions for codes weaker than Unique Decipherability (UD), we introduce the notion of coding partition. Such a notion generalizes that of UD code and, for codes that are not UD, allows to recover the “unique decipherability” at the level of the classes of the partition. By tacking into account the natural order between the partitions, we define the c...

Hillier and other researchers combined analysis of urban grids using axial maps with counts of pedestrian movements. They recognised the influence these grids played on pedestrian movements in cities and developed the ‘law of natural movement’ in which urban grids are principal generators of pedestrian movement and starting point for a city’s development into specialised ‘generative’ and ‘conse...

Carole Rakodi is a Professor of International Urban Development in the International Development Department, School of Government and Society, University of Birmingham, England. She is a geographer and town planner, who has worked as a professional and researcher in developing countries for many years, mainly in Africa. Her main interests are in urban governance and politics, urban land, liveli...

In 1995 the percentage of U.S. households identifying crime as a neighborhood problem remained about 7%, according to the American Housing Survey. 1 The percentage of households identifying crime as a problem had reached 7.4% in 1991 and was fairly constant afterwards. Somewhat similar to the Nation's general pattern of violent victimization rates, household perceptions of crime as a problem ro...

Recent technical advancements in computing devices and communication networks, combined with changes in the way people use Information and Communication Technology (ICT) systems, have transformed the ICT industry. In this paper, we present the Collaborative Urban Computing (CUC) paradigm which supports serendipitous cooperation between a set of users physically located in an urban environment a...

Urban spaces consist of a complex collection of buildings, parcels, blocks and neighborhoods interconnected by streets. Accurately modeling both the appearance and the behavior of dense urban spaces is a significant challenge. The recent surge in urban data and its availability via the Internet has fomented a significant amount of research in computer graphics and in a number of applications in...