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In the case of the global energy crisis and the higher sound of energy saving and emission reduction, how to take effective management measures of ship energy efficiency to achieve the goal of energy saving and emission reduction, put forward a new challenge for the development of shipping technology. The application of big data technology provides a new idea for the research of ship energy efficiency...
Maritime accidents and incidents, such as ship to ship collision or ship grounding, most often occur near ports due to the intensive water traffic and shallow water depth. The occurrence of those accidents place a port in a very dangerous situation, since the port could suffer from a high risk of blockage of port entry, and the consequent economic loss can be substantial. In the case of maritime accidents,...
A compact gain equalizer was designed and fabricated, by using the thin-film process, which can improve the gain flatness for millimeter wave transmit - receive system effectively. The AWR software was used as a tool for the initial circuit simulation, then the HFSS software was used to simulate the three-dimensional model accurately. Firstly, the influence of the thin-film resistor dimension on the...
In order to resolves the problem of occlusion in process of target tracking, an improved anti-occlusion tracking algorithm was proposed in this paper based on compressive particle filtering (CPF). Compressive sensing theory was introduced into particle filter (PF) framework to ensure the instantaneity of tracking. We apply the histogram with spatial information and sub-part matching ideas in the compressive...
This paper analyzes land-use status and the laws of dynamic changes in Liaoning coastal economic belt, analyzes correlation between plough, construction land and economic, and forecast the trends of land- use change. The result shows that there are significant correlation between plough, construction land expansion and economic development. And also confirm development zone is one of the main influence...
Resource sharing is one of construction aims of high-tech virtual industrial cluster (HTVIC) and furthermore is the key factor to keep cluster competitive force. This paper analyzes current situation and problems in resource sharing in HTVIC, and indicates the necessity of constructing a resource sharing platform in HTVIC. Combined with these studies, this paper puts forward a concept of resource...
There exists an increasing strong demand for internet application in passenger trains, and the wireless broadband coverage along the whole railway is a prerequisite of the internet application in passenger trains. Wireless Mesh Network(WMN) based on 802.16 provides a new solution idea for the wireless broadband coverage of the railway, which is based on OFDM technology to support high-bandwidth data...
This paper discusses a class of nonlinear Schrödinger equation with combined power-type nonlinearities and harmonic potential. By constructing a variational problem and the so-called invariant manifolds of the evolution flow, we derive a sharp condition for blow up and global existence of the solution by applying the potential well theory and the concavity method.
IEEE802.16d wireless mesh network(WMN) includes two different scheduling mechanisms: distributed scheduling and centralized scheduling. The performance of WMN has been influenced by many factors. This paper analyses and researches the limited performance of WMN from the factors of throughput and delay in detail based on the distributed scheduling mechanism in IEEE802.16d mesh mode. An improvement...
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