BACKGROUND Computed tomography (CT) has largely become standard of care for diagnosing appendicitis at the expense of increased patient radiation exposure, cost, and time to surgical intervention. To date, there are very limited data on the accuracy of bedside ultrasound (BUS) for the diagnosis of appendicitis in adults. OBJECTIVE The objective of this study is to evaluate test characteristic...

The paper introduces a mechanism to implement distributed scheduling for CAN-bus resource in order to meet the requirements of a dynamic distributed real-time system. The key issues considered here, are multicasting, distinguishing between hard real-time, soft real-time, and non real-time constraints, achieving high resource utilization for CAN-bus, and supporting dynamic hard real-time computi...

DC microgrids are highly compatible with photovoltaic (PV) generation because of their direct-current properties. However, the increasing integration PV sources into microgrids, traditional maximum power point tracking (MPPT) algorithms may cause problems such as overvoltage and fluctuation, which makes it challenging to keep stability DC-bus voltage due intermittent stochastic nature PVs. Cons...

The paper introduces a mechanism to implement distributed scheduling for the CAN-bus resource in order to meet the requirements of a dynamic distributed real-time system. The key issues considered here are multicasting, distinguishing between hard real-time, soft real-time, and non-real-time constraints, achieving high resource utilization for the CAN-bus, and supporting dynamic hard real-time ...

DC microgrids have gained a lot of interest recently due to increasing dc loads such as electric vehicles and the penetration renewable energy sources (RESs). However, face challenges concerning bus voltage fluctuations, which severely impact system stability when subjected uncertainties load RESs. This paper focuses on maintaining DC-bus through control for islanded microgrid using concept cas...

The performance of a multi-computer system based on the simultaneous optical multi-processor exchange bus (SOME-Bus) interconnection network is examined using queuing network models under the message-passing and distributed-shared-memory (DSM) paradigms. The SOME-Bus is a low latency, high bandwidth, ®ber-optic interconnection network which directly links arbitrary pairs of processor nodes with...

Aiming at the bus voltage fluctuation caused by nonlinearity, limited change and uncertain factors such as deviation, load system parameter traditional droop control in DC microgrid, a precise scheme considering constraints is proposed. Firstly, parabolic used to replace linear improve accuracy of power distribution. On this basis, controller based on barrier Lyapunov function designed precisel...

This paper presents a microgrid planning model for determining the optimal size and the generation mix of distributed energy resources (DERs) as well as the microgrid type, i.e., AC or DC. Considering the growing ratio of DC loads and DERs, DC microgrids could be potentially more beneficial than AC microgrids by avoiding the need to synchronize generators, reducing the use of converters, facili...