With the fast development and utilization of underground space resource in cities, the spatial distribution of urban underground pipelines becomes more and more complex. How to efficiently utilize the latest technology, realize underground space resources' management, visualization, layout optimization and mine applications, are challenging issues in current digital city development. Taking int...

Most communications in the new era are dependent on Information and Communication Technology (ICT). In addition, infrastructure is becoming increasingly interconnected. This not only makes lives easier, but also leaves technology users more vulnerable. Cybercrime, digital espionage and other cyber disturbances dictate the news reports on a daily basis. In general, cyberattacks are no longer con...

Giles' planigale (Planigale gilesi) is among the smallest extant marsupials and inhabits deep soil cracks in arid floodplains. We examined whether its physiology shows specific adaptations to its extreme habitat. Metabolic rate, body temperature, evaporative water loss and thermal conductance were measured for eight planigales (average mass 9 g) exposed to four different ambient temperatures ra...

The foundation framework for underground spatial data aims to establish the platform for the underground spatial data sharing and integrating. The reasons lie in that: a) the long-term development of city construction has accumulated abundant underground spatial data and information; b) the development and utilization of city underground space demands for clear, detailed and visualized comprehe...

The research was conducted to explore fiscal morality and underground economy of European countries the US. study based on assumption that growth rate an has a significant influence tax compliance. In addition, investigated effect other factors compliance various countries. included life expectancy, GDP rate, expenditure education, proportion people living below median income. Tax revenue used ...

This paper investigates some of the man~estations and major forces driving the emergence of the new economy. A model of the virtual enterprise is proposed and investigated in the context of a virtual industry value chain. The transition to the virtual economy is definitely technology driven but is also shaped by social, economic, institutional forces. As such, it raises a number of significant ...