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The main objective of this study is to discuss the quantificational risk assessment model of urban land reserve planning. Based on the proposed model, the risk of urban land reserve planning in Nanjing was evaluated by using literature data and empirical analysis. The results show that the whole situation of the risk of urban land reserve planning in each district of Nanjing was in bad situation....
The objective of this paper is to address a typical eco-efficiency analysis problem, in which undesirable outputs and categorical variables should be considered simultaneously. By analyzing the impacts of categorical variables on decision making units' (DMU) desirable and undesirable outputs, a modified DEA (Data Envelopment Analysis) model is proposed. In the proposed model, a new approach of defining...
In this paper, a forecasting method, combining grey model (GM) with partial least squares regression (PLS), was applied to forecasting city terminal energy consumption for the first time. PLS is of the advantage of overcoming the correlative affect among independent variables, distinguishing the system signal from noises, and explaining dependent variables well; GM (1, 1) model is able to overcome...
We focus on bus transport networks (BTNs), because buses are the main public transportation tool in China. In this paper, we present the empirical investigation results on the urban bus transport networks (BTNs) of four major cities in middle China. In BTNs, nodes are bus stops. Two nodes are connected by an edge when the stops are serviced by a common bus route. Comparing with the developed cities...
In this paper, we present the empirical investigation results on the urban public traffic networks (PTNs). We study four urban public traffic networks in south China, which are the urban public traffic networks of Guangzhou, Changsha, Zhuhai and Xiamin. The empirical results on the four big cities show that the accumulative act degree distributions of PTNs take neither power function forms, nor exponential...
Housing rental is a huge market across the world, this paper supposes that landlords offer different products distinguished by their different length of duration. When a rental request arrives, landlords' empirical choice to accept or reject it might not be a sensible decision making the expected revenue maximized in a long-term view. We structure a model to compare revenue densities of alternative...
With the theory support of "the first law of geography" the spatial variance of the land use landscape in Haidian District of Beijing is analyzed with the geostatistic tool and grid sampling method. The spatial organization and mechanism of urbanization can be well understood by the reveal of spatial characteristics of artificial impact and ecological effect. The results show that: (1) the...
To perform fuzzy risk assessment, the simplest way is to calculate the fuzzy expected value and convert fuzzy risk into non-fuzzy risk, i. e., a crisp value. In doing so, there is a transition from a fuzzy set to crisp set. Therefore, the fuzzy risk can be a multi-valued risk or set-valued risk. Calculation of the fuzzy expected value of Yiwu city's water resource risk has been performed based on...
This drought, especially for city seriously affects the social and economic development of city. Drought is characterized by their high frequency, broad range and great loss. Nanchong city is one of the major cities with drought in Hilly Area of Central Sichuan Basin. This study presents a model of risk assessment of urban drought which integrates hazard, exposure, vulnerability and emergency response...
The study of urban spheres of influence is divided into empirical research and modeling research, and we focus on the latter. Actually, in this paper we review the study progress in modeling research of urban spheres of influence in China. At present, the modeling research has two main lines in China: the application line, and the theoretical line. Each line will be introduced in detail with demonstration,...
This paper presents one of many possibilities of decision theory that can be used in the modelling of the quality of life in a given city in the Czech Republic. Real data sets from citizen questionnaires for the city of Chrudim were analysed, pre-processed, and used in the classification models. Classifier models, on the basis of C5.0, CHAID, C&RT, and C5.0 boosting algorithms were proposed and...
Based on multi-temporal remote sensing images of Jinjiang City in China acquired in 1988 and 2001, we identified the characteristics and the classification systems of its ecological environment. By interpreting the thematic map of ecological environment in this area and analyzing the existing land use situation, two maps were obtained for these two different periods of time. A spatio-temporal analysis...
Geographic knowledge discovery (GKD) is the process of extracting information and knowledge from massive georeferenced databases. Usually the process is accomplished by two different systems, the Geographic Information Systems (GIS) and the data mining engines. However, the development of those systems is a complex task due to it does not follow a systematic, integrated and standard methodology. To...
So far, the markets of a tourist destination are determined mainly by questionnaire survey. Based on our previous work, a hyperlink-based GIS model called the ldquobulbrdquo model is proposed to extract the international potential markets of a tourist destination from inlinks to its Web sites. In this paper, the principle and implementation of the ldquobulbrdquo model are introduced in detail. In...
Today, in architecture design, co-operative partners often collaborate - through digital networks and convergent technologies - to achieve the conceptual intention and its actual realization. Therefore, we believe that former creative exploration could be computer-assisted by specific tools and methods, able to enhance designer's conceptual capabilities and thus, to free its imagination.
In this paper, measured values of annual indexes were directly utilized to assessment. By using projection, we make integrated assessment of environmental quality in Guangzhou City from 2003 to 2007. The order of annual environmental quality is obtained. The results show that the environmental quality in Guangzhou is worrying.
In this paper we develop a tool (DALSIM - delivery areas and logistics simulation), following the hybrid model described in our previous work that uses the operations research and systems dynamics. The tool is composed of two modules: a module for the simulation of delivery areas at local level based on queuing systems, and the second one simulates the spread of the obstruction on the overall flow...
Understanding the dynamics of disease spread is of crucial importance, in contexts such as estimating load on medical services to risk assessment and intervention policies against large-scale epidemic outbreaks. However, most of the information is available after the spread itself, and preemptive assessment is far from trivial. Here, we investigate the use of agent-based simulations to model such...
The paper applies non-equilibrium statistical mechanics to evaluating the competitiveness of service industry as an evolutionary complex system. And then the evolutionary patterns of eight cities in China are simulated by the SOM. The comprehensive competitiveness of each city is analyzed from the pattern values.
TRIZ is a systematic methodology based on knowledge, facing human, for the solution of inventive problems; physical contradictions are the key questions that TRIZ needs to solve. Separation principle is the main means to solve physical contradictions, including 4 methods, namely: separation in space, separation in time, phase transformation (separation on condition), system transformation (separation...
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