Abstract Long-term unreasonable mining has seriously affected the water resources quality of mature cities, but development is an important economic pillar those cities. The problems between sustainable cities and environmental protection need to be solved urgently. Based on state-danger-immunity (SDI) conceptual framework, this paper constructs evaluation system carrying capacity (WRCC), calcu...

The vestibular system consists of the peripheral vestibular organs in the inner ear and the associated extensive central nervous system projections-from the cerebellum and brainstem to the thalamic relays to cortical projections. This system is important for spatial orientation and balance, both of critical ecological importance, particularly for successful navigation in our environment. Balanc...

Nutrition and fluid and electrolyte balance are inextricably linked through ingestion, digestion, absorption and intermediary metabolism. Studies are described showing that man's physiological capacity to excrete excess salt and water is limited under normal conditions; it is further reduced by starvation and injury, so that patients are easily overloaded, resulting in increased complications o...

Currently, multiband orthogonal frequency division multiplexing (MB-OFDM) is considered to be one of the modulation schemes of UWB and is being actively investigated. It is necessary to provide lowcost receivers for consumers to receive wide support for the MB-OFDM system. Such receivers can be achieved by utilizing direct-conversion architecture. Direct-conversion architecture suffers from IQ ...

Direct conversion receivers in orthogonal frequency division multiplexing (OFDM) systems suffer from direct current (DC) offset, frequency offset, and IQ imbalance. We have proposed an IQ imbalance estimation scheme in the presence of DC offset and frequency offset, which uses preamble signals in the time domain. In this scheme, the DC offset is eliminated by a differential filter. However, the...

[Purpose] To investigate the effects of two common asymmetric sitting positions on spinal balance. [Subjects and Methods] Thirty-seven healthy subjects in their twenties were enrolled and randomly divided into two groups. Asymmetric positions of resting the chin on a hand and crossing the legs were performed by each group for 1 hour. After 1 hour, the subjects lay in the supine position again a...

Study Design Literature review. Objective To discuss the evaluation and management of fixed sagittal plane imbalance. Methods A comprehensive literature review was performed on the preoperative evaluation of patients with sagittal plane malalignment, as well as the surgical strategies to address sagittal plane deformity. Results Sagittal plane imbalance is often caused by de novo scoliosis or i...

The intelligent diagnosis of rotating machinery with big data has been widely studied. However, due to the variability working conditions and difficulty in marking fault samples, it is difficult obtain enough high-quality for training bearing models practical industrial application scenarios. Aiming at problem imbalance caused by lack a novel metalearning method (MOFD) proposed get solution und...

The unprecedented growth of available spatial data at geographically distributed locations coupled with the emergence of grid computing provides a strong motivation for designing a spatial grid which supports fast data retrieval and allows its users to transparently access data of any location from anywhere. This calls for efficient search and loadbalancing mechanisms. This paper focusses on dy...

background and purpose: decreased males’ motivation for entering universities has caused a low male/female ratio in different university majors. in 2005-2006 academic year, enrollment of female students in rafsanjan university of medical sciences reached 83.14%. this tremendous gender imbalance may lead to the development of a mono-sex system for health service providers and will.affect the soc...