Underwater images are important carriers and forms of underwater information, playing a vital role in exploring utilizing marine resources. However, have characteristics low contrast blurred details because the absorption scattering light. In recent years, deep learning has been widely used image enhancement restoration its powerful feature capabilities, but there still shortcomings detailed enhancement. To address problem, this paper proposes supervised residual dense network (DS_RD_Net),...

To optimize driving behavior and improve road safety on expressways, this article analyzes the effectiveness of existing typical diagrammatic guide signs (DGSs) urban expressways in China. A simulator experiment consisted 12 scenarios, including four situations sign installations three types exit ramps, was carried out. Four indicators were analyzed using ANOVA with repeated measures a post hoc test. The results show that individual DGSs increased instability behind reduced number lane...

In this paper, based on Yamada’s hybrid steepest descent method, a general iterative method is proposed for solving constrained convex minimization problem. It proved that the sequences generated by implicit and explicit schemes converge strongly to solution of problem, which also solves certain variational inequality. MSC:58E35, 47H09, 65J15.

The effectiveness of interchange diagrammatic guide signs has significant meaning in traffic safety and driver’s understanding. This paper presented a comprehensive evaluation classification signs’ complexity. relies on how well road users can understand those diagrams. study tested 37 types diagrams the visual recognition complexity degree three levels, general level, partial detailed finally seven indexes are selected to These be used conduct quantitative classification. And result diagram...

Deterministic inventory model, the economic order quantity (EOQ), reveals that carrying or ordering frequency follows a relation of tradeoff. For probabilistic demand, tradeoff surface among annual order, expected and shortage are useful because they quantify what firm must pay in terms workload investment to meet customer service desired. Based on triobjective this paper employs successive approximation obtain efficient control policies outlining tradeoffs conflicting objectives. The...

In present time, the guidelines on warning sign position in China National Standard lack detailed and standard regulations of placing signs sharp curves, which may cause road safety problems. Therefore, this paper briefly discussed how to optimize a curve through driving simulator experiment. This study concluded that placed at different positions prior will have influence ranges for drivers approaching negotiating curve. Meanwhile, imposed effect obviously adjustment vehicle's lane curves...

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A human factors laboratory study was conducted to evaluate the effect number of road names on an expressway exit guide sign. Research has shown influence sign information motorists, however questions regarding that can be presented signs is not known with certainty. The results indicate more leads increase in confirmation time and subjective assessments grow. From results, evaluative index overload threshold determined. show when six or less, motorists perceive understand faster.

In this article, based on Marino and Xu’s method, an iterative method which combines the regularized gradient-projection algorithm (RGPA) averaged mappings approach is proposed for finding a common solution of equilibrium constrained convex minimization problems. Under suitable conditions, it proved that sequences generated by implicit explicit schemes converge strongly. The results paper extend improve some existing results. MSC:58E35, 47H09, 65J15.

In order to improve the effect of spoken English training, this paper combines multimedia information technology reform teaching and integrates BP neural network into training. Moreover, actual needs training framework system construct data set, clean up implement word vector representation students professionals. addition, constructs entire resource recommendation algorithm based on graph convolutional network, deep system. Finally, designs an experiment evaluate The experimental research...

Based on the theory of form concept analysis, gives definition image context, and generating lattice image. At same time, related knowledge graph matching is also presented. Generation base formal context images, draw Hasse diagram which correspond with lattice, then use match method to find images witch similar an example image, last The similarity calculation are used matching. analysis (mainly grid) applied To calculate features.

In the power system, neutral grounding is usually adopted in small current system whose voltage grade does not exceed 60kV. this way, if a single-phase ground fault occurs, due to that line still symmetric and fault-phase very small, can run 1 2 hours improve supply reliability. However, order prevent range expansion, selection location are needed. For problem of weak signal it proposes method by injecting specific frequency signal, quickly solve question location.