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Depth is an essential characteristic of flood inundation in hydro-ecological research. Several studies have tried to estimate inundation depth from remotely sensed image and digital elevation model (DEM) data by applying a series of cross section profiles along the centerline of a river reach. This method requires a large amount of manual work in order to identify the centerlines and cross sections,...
In this paper, the model of jet dispensing process is developed by decomposing the dispenser into three parts. This model includes all the important system parameters, such as the fluid viscosity, the diameter and length of nozzle and backflow chamber. In this model, the fluid flow is assumed to be steady state flow at each moment. During the whole jetting process, the fluid flow state changes with...
As an extension of binary low-density parity-check (LDPC) codes, non-binary LDPC (NB-LDPC) codes show significantly better performance when the code length is moderate or small. Recently, enhanced iterative hard reliability based (EIHRB) decoding algorithm is proposed to reduce the computation complexity. However, the EIHRB algorithm suffers a lot from significant performance degradation when the...
In this paper, the model of jet dispensing process is developed by decomposing the dispenser into three parts. This model includes all the important system parameters, such as the fluid viscosity, the diameter and length of nozzle and backflow chamber. In this model, the fluid flow is assumed to be steady state flow at each moment. During the whole jetting process, the fluid flow state changes with...
Ocean buoys is an important tool of Marine Environmental Monitoring, The design of drifting buoy plays a significant role in field of shallow sea environmental monitoring. In order to solve the problem that the shallow marine physical parameters acquisition costs are high and the accuracy of data is low, this paper designed a mini-drifting buoy in shallow sea based on AT89S51 single-chip microcomputer,...
According to the characteristics of the equipment maintenance, and combining the advantages and disadvantages of qualitative and quantitative evaluation, this paper introduces a method to evaluate the factors affecting equipment maintenance support ability based on the FAHP (“fuzzy synthesis” and “analytic hierarchy process”) and analyzes evaluation results. The effectiveness of the proposed method...
We report a complete experimental realization of measurement device independent quantum key distribution system with decoy method, which closes loopholes in both source and detection. 25-kbit secure key is generated over a 50-km fiber link.
In this paper, the relation between the surface electric field and the temperature distribution dependence on the drift-region doping concentration in a 30-V asymmetric drain-extended MOSFET is studied. For the case of high drift-region concentration, the drain resistance is low, and the current density is high, which induces a high nonuniform temperature distribution in the transistor, which in turn...
Through experiments in standard runoff plots, this paper studied effects of leucaena leucocephala hedgerow and vetiver hedgerow on bulk density, particle distribution and nutrient loss of the surface soil (the soil depth was 0–20 cm) of sloping farmland in the purple soil area, Sichuan, China. Results showed that: (1) the two hedgerows can reduce soil bulk density, and vetiver hedgerow had a bigger...
With the large enrollment of postgraduate students, many questions related with the students' education has appeared. This research takes X university as a case for the graduate satisfaction survey. During the case study, we detect that graduate students have low satisfaction in “tutor system”, “curriculum system”, “teaching situation” and “academic environment”. Therefore, we propose that instruction...
The unfalsified control is one type of model-free adaptive control. The control strategy enables one to design a controller that is consist with a performance objective and measured past input-output online data without plant models or assumptions on the plant. The theory works by eliminating candidate controllers that do not satisfy performance specification by evolving experimental data. The controller...
This paper presents the implications, significances, and realization of chaotification of class teaching based on the chaos theory. The classroom is an open, nonlinear and dynamical system. Chaotifying this system indicates that class teaching is provided with chaotic characteristics(e.g., butterfly effect, self-similarity, strange attractors, etc), which is beneficial to built a multi-dimensional,...
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