In this paper, we propose a novel topic model based on incorporating dictionary definitions. Traditional topic models treat words as surface strings without assuming predefined knowledge about word meaning. They infer topics only by observing surface word co-occurrence. However, the co-occurred words may not be semantically related in a manner that is relevant for topic coherence. Exploiting di...

In Essex, EssexITS (a joint partnership of Essex County Council, Atkins and Siemens), has taken a hands-on approach to assist the County Council in carrying out its responsibility under TMA2004. EssexITS has developed a number of Integrated Urban Traffic Management and Control (UTMC) strategies to manage Essex’s road network, tackle congestion and proactively prevent or reduce the effect of con...

An analysis pattern is any part of a requirement analysis specification that can be reused in the design of other information systems as well. Urban management systems (e.g.: Tax Control Systems, Urban Transportation System) are implemented in a similar way for many counties. This paper proposes three analysis patterns that make possible the reuse of geographic database design for urban area pl...

Sustainable development is a key component in urban studies. Earth Observation (EO) can play a valuable role in sustainable urban development and planning, since it represents a powerful data source with the potential to provide a number of relevant urban sustainability indicators. To this end, in this paper we propose a conceptual list of EO-based indicators capable of supporting urban plannin...

cities need good, participatory and effective policies and plans for development. urban development plans such as comprehensive plan are the most important tool for implementation of policies and plans. the effective implementation of city development plan requires high level documents such as spatial planning; good macro development plans policies, efficient urban management and public partici...

Urbanization is a product of human population growth and industrialization. In industrialized as well as developing countries, urbanization has moved humans away from many arthropod pests, but into intimate associations with others. Since the introduction of synthetic organic insecticides, urban dwellers have fought pests almost exclusively with repeated applications of chemicals. In agricultur...

The endogenous complexity and spatial nature of the problems encountered in the urban water management environment present decision-makers with three major problems: (a) in the urban environment, every decision is site-specific, almost on a case-by-case basis, (b) the decision-maker must access, simultaneously, a large amount of information, increasing with rising spatial resolution and (c) the...

Combined with the GPRS (General Packet Radio Service) technology, Geographic Information Systems (GIS) extends its abilities from static to dynamic working environment for urban drainage network. In this paper, a framework of Web-GIS for the urban drainage network management system is presented. This three-layer system framework is based on the J2EE technologies. The principles of data structur...

This paper presents an approach to quantifying current and future city-wide flood risks to Ho Chi Minh City. Here urban planning scenarios linking urban development and climate change explore the main driving forces of future risk. According to the redefined role of urban environmental planning in times of climate change, spatial planning needs to go beyond traditional planning approaches to br...