Understanding of human mobility in urban space benefits the planning and provision of municipal facilities and services. Due to the high penetration of cell phones, mobile cellular networks provide information for urban dynamics with a large spatial extent and continuous temporal coverage in...

The water footprint (WF) of crop production is a comprehensive indicator that can reflect water consumption types, quantities and environmental impacts during the crop growth period. This study assesses interannual variability of green, blue and grey WFs of maize production in Beijing from 1978...

The size effect of the dielectric properties and the barrier height was investigated in the ferroelectric solid solution Ba<Subscript> x </Subscript>Sr<Subscript>1−x </Subscript>TiO<Subscript>3</Subscript> system. The decrease of the grain size causes the suppression of the ferroelectricity, and the increase of the relaxation frequency. Barrier heights increase...</subscript></subscript></subscript>

We study the thermal transport through a quantum spin-1/2 chain heterostructure, which consists of a finite-size chain with two-site isotropic XY interaction and three-site XZX+YZY interaction coupled at its ends to two semi-infinite isotropic XY chains. After performing Jordan-Wigner...

This paper analyzes the internal divisional structure within an organization in the framework of incomplete contract theory. We use the framework of Aghion and Tirole (1997) and dene the managerial control structure as \sequence of search". A key feature of this paper which di erentiate it from...

Environmental concerns associated with power generation drive an increasing interest in developing load management strategies to reduce pollutant emissions. Currently, no mechanism exists to directly influence pollutant emissions based on demand-side decisions. This shortcoming is addressed...

With the rapid economic and social development in China, pressure on water resources in the Yellow River is becoming more and more prominent. For the sustainable social, economic and agricultural development in the Yellow River valley, it is imperative to create the perfect water right...

Combining the one-dimensional tight-binding Su-Schrieffer-Heeger (SSH) model including interchain interactions and the extended Hubbard model (EHM), we investigate the recombination processes between two triplet excitons in conjugated polymers using a nonadiabatic evolution method. Due to the...

The effects of saving and spending patterns on holding time distribution of money are investigated based on the ideal gas-like models. We show the steady-state distribution obeys an exponential law when the saving factor is set uniformly, and a power law when the saving factor is set diversely....