background: syncope is a common clinical problem which can be remarkably debilitating and associated with high health care costs. syncope is a clinical syndrome with many potential causes. the aim of the study was to determine the etiologies of patients with syncope in the emergency department (ed) of a referral and general university hospital.  methods: one hundred sixty-five consecutive patie...

The tilt aftereffect (TAE) is a visual illusion in which prolonged adaptation to an oriented stimulus causes shifts in the perceptions of subsequent stimuli. Historically, the TAE has been attributed to response suppression of neurons tuned to the adapting orientation. Recent physiological studies of neurons in primary visual cortex (V1) have identified two effects of adaptation: a response sup...

One major aim of the neurological rehabilitation of patients with severe disorders of consciousness (DOC) is to enhance patients' arousal and ability to communicate. Mobilization into a standing position by means of a tilt table has been shown to improve their arousal and awareness. However, due to the frequent occurrence of syncopes on a tilt table, it is easier to accomplish verticalization u...

BACKGROUND Lateral maternal tilt reduces aortocaval compression and the consequent cardiovascular instability. METHODS We measured the angle of table tilt used by 16 anaesthetists during uncomplicated, elective Caesarean section. After initiating anaesthesia, they were asked to position the patient and estimate the angle of tilt, which was then measured. RESULTS Almost every anaesthetist po...

With the wide spread of peer-to-peer (P2P) applications, P2P technology has been shown to be a promising solution to deploy large-scale media streaming systems. Supporting asynchronous user requests and VCR-like interactions in media streaming systems nevertheless remains a challenging task. In this paper, we introduce a derivative tree-based P2P framework for supporting interactive streaming a...

Distributed Hash Tables (DHT) are algorithms used in modern peer-to-peer applications, which provide a reliable, scalable, fault tolerant and efficient way to manage P2P networks in a true peer to peer manner. A lot of literature has been published on the subject to analyze various different DHT algorithms, their properties and performance. The purpose of this paper is to find out about recent ...