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This work proposes a method to estimate landscape units contained in a region (using satellite WorldView-2 imagery as input) for urban planning. Number of landscape units contained in a region and their extension are estimated by a graph-based segmentation algorithm while the composition of each landscape unit is estimated by a modular neural network. The proposed method, despite of the subjectivity...
Landsat Data Continuity Mission's or Landsat 8 was launched into orbit on February 11, 2013. It opened up a new diverse range of data for natural environment research, disaster monitoring, and risk assessment using satellite-derived environmental and climatic variables. In this paper, it is our intention to present major potentials of Landsat 8 data to provide environmental variables and to propose...
In a monopolistic cable television (CATV) service market, it is generally believed that tiered charging is beneficial to consumer surplus as compared to flat rate charging while it is likely to reduce supplier income. Can the addition of a carefully designed Price-Channel-Downscaled (PCD) package to a flat rate (FR) package stimulate enough new subscribers and achieve Pareto improvement between cable...
Since 1960s, no solutions have been found both home and abroad to the theory and protective technology related to hazard influences of a high voltage transmission system on a communication system. Previously, the major technical measure against comprehensive hazards of the strong current is to make them separated. However, in city planning, it is inevitable to arrange them closely or construct them...
The impact of inclement weather to urban traffic has been widely observed and studied for many years, with focus primarily on individual road segments by analyzing data from roadside deployed monitors. However, two fundamental questions are still open: (i) how to identify regional weather-traffic sensitivity index throughout a city, that indicates the degree to which the region traffic in a city is...
This work aims at systematically characterizing urban mobility. There are several possible approaches to the problem but this work focus on reducing commuting times and emissions using the current infrastructures and without increasing the cost to the end user and doing so in an effective and sustainable way. A set of pairs of destinations and origins was chosen to represent usual commutes and cover...
According to statistics and analysis of the papers in the Science Citation Index published during 2009–2013 in Guangzhou, we investigated the authors of papers in the Science Citation Index. Then we found some conclusion including the performance of papers about science and technology in Guangzhou. Finally, we made some suggestions-speeding the construction of the major innovation platform; giving...
With the rapid growth of hierarchical data in public opinion analysis, users are in urgent need of information visualization techniques to present the data in an intuitive way in order to reveal the characteristics of the data, understand the rules behind the data, and then assist them in decision-making process. This research makes improvement in the display insufficiency of leaf nodes in the radial...
This paper presents a method to count the number of breaths per minute (RR) using the PrimeSense camera, in particular, the depth camera. Based on the reflection of a pattern of the infrared (IR) dots on depth frames created by the IR camera, the oscillation of the certain region on human body is detected and recorded at different time points. The data are used to build a depth map whose data are...
Walking acts as an authentic link for intermodal transfer in major activity centers and helps to fulfil recreational and utilitarian trips in a city. To assess the condition and pattern of walking, walkability assessment is the primary option. In the last decade a large number of literatures in urban planning, public health and transportation have analyzed the role of the built environment on physical...
The urban road network shares self-similarity and is suitable to adopt the fractal theory for analysis. The fractal dimension of the urban road network reflects the completeness of the road system. The employment of fractal theory to analyze the urban road network can reflect the feasibility of the urban road network layout and is of vital significance to the evaluation of the urban road network planning...
Residential burglaries are increasing. By visualizing patterns as spatial hotspots, law-enforcement agents can get a better understanding of crime distributions and trends. Two aspects are investigated, first, measuring the accuracy and performance of the KDE algorithm using small data sets. Secondly, investigation of the amount of crime data needed to compute accurate and reliable hotspots. The Prediction...
this paper focuses on the study of electric field spatial variability in the context of mobile telephony base stations exposure. Electric field is computed using a Uniform Theory of Diffraction (UTD) based simulation technique suitable for large urban areas. Two complementary approaches of spatial variability are proposed here. One based upon spatial autocorrelation and the other one on statistical...
Despite recent advances in uncovering the quantitative features of human activities in routine life, human call behavior in earthquake is still less clear. Taking the data of mobile phone records produced by the users in 3 days in the northwest of China, we systematically analyze the characteristics of mobile phone call patterns to earthquake by using ratio analysis and degree distribution method...
In this paper, we propose an improved crossover method for genetic approach to travelling salesman problem (TSP). Because any feasible solution of TSP must be an ordered permutation, the validity of an offspring generated by the simple crossover where corresponding parts of genes or chromosomes of parents are exchanged. Therefore, researchers have proposed special crossover methods, and so far it...
Wargaming system is an effective method for emergency management. The evaluation methods are the important parts of the system. First, the essential features and principles of wargaming system are explained. Then, the evaluation methods of wargaming system are analyzed, and four main types of evaluation methods are described in detail, such as the movement type, position type, effect type and impression...
High purity germanium detector (HPGe) was employed to assess radionuclide contents of 238U, 40K and 232Th in soils obtained from Omala, Kogi State, Nigeria. The activities measured vary from 9.0 to 82.2, 12.3 to 114.86 and below detector limit (BDL) and 349.0 Bq Kg−1 in 238U, 232Th and 40K respectively. Highest activities for the three radionuclides were consistently obtained from soil samples got...
Based on previous studies, the different forms of Collection and Delivery Point (CDP)currently used by B2C e-commerce business are divided into five types in this paper, i.e., the convenience store chain mode, intelligent box mode, “scattered little stores” mode(similar with “Collect+” mode), self-run store mode and express service point mode, this paper then introduce the process of consumer going...
Multi-temporal Landsat images in 1999, 2006 and 2013 were used to reveal the spatial-temporal changes of the coastal locations and types of Xiamen Island. The high tide water levels were extracted as coastline approximations and the coastal types were made by manual interpretation based on Google earth high resolution images in this study. The results indicated that the coast changes mainly happened...
In this paper, we present a new framework for high-level processing of time series images, with particular reference to Sentinel-1 data. The proposed methodology has the goal of enhancing the interpretation of SAR imagery through the production of physical-based RGB composites, which are particularly suited for being easily interpreted by the human photo-interpreter, lowering the expertise level required...
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