Moving bottleneck is one of the important causes of highway congestion. To effectively alleviate this problem, it is proposed to establish a micro-macro model of the interaction between moving bottleneck and surrounding traffic. An internal prediction model is built based on constraints and optimization goals, which can minimize costs. Based on the function to evaluate the impact of the model on traffic flow, a flow control model problem is proposed. According to the MPC (model predictive control) method, the initial flow is optimized and controlled, and the macro simulation analysis is performed using Matlab. The simulation results show that the control method improves the optimization target by more than 5% compared with the uncontrolled condition, and the highway operating efficiency is improved. In view of the fact that the permeability of automatic vehicles will continue to increase in the next few years, the use of controlled traffic flow to regulate the traffic has a promising prospects.

To solve the problems of long time consuming and large amount of work in battery aging test, the battery aging process is described as calendar aging and cyclic aging, and the calendar aging model and cyclic aging model are established respectively based on the existing battery aging research. Taking the current flowing through the battery as the conversion condition, the two models are integrated into the dynamic aging model of the battery. Based on the dynamic aging model of the battery, the capacity attenuation rate of the power battery under short-time and multi-condition switching conditions can be estimated. The model is built in the computer environment, and the battery aging simulation test under three different charging schemes are carried out. The battery aging process is simulated in a shorter simulation time, which reduces the cost of verifying the battery aging.

In this paper, the influence of the connection topology and coupling strength of complex neural networks on their firing behavior is studied. Firstly, a Newman-Watts small world neural network is established by using magnetic field-coupled memristive Hodgkin-Huxley (HH) neurons as nodes and taking the connections between neurons as edges. Then the firing modes of neural network are studied by changing the connection topology probability and coupling strength. It is found that for a given coupling strength, when the connection topology probability is close to zero, the neural network has no firing behavior; while the connection topology probability is larger than the threshold, the neurons in the network will have a discharge phenomenon. As the connection topology probability p further increases, the firing intensity becomes larger. The results show that the connection topology probability p can induce and enhance the electrical activity of the neural network. It is expected that this reseach can provide useful insights into understanding the collective dynamics of real coupled neurons.

In view of the instability of the output power caused by the strong randomness of wave height and frequency in wave energy generation, it’s proposed to use the prediction data of wave energy generation power to assist the accurate operation of energy storage system (physical energy storage and chemical energy storage) to stabilize its volatility. The prediction data is predicted based on the wave energy generation power prediction method combining with the Long-Short Term Memory (LSTM) and the Back Propagation Neural Network (BP). The experiment is conducted by using two-year weather data and 245-day wave energy generation power data from an island in the South China Sea, and three predicted time span LSTM-BP models are trained and tested. The prediction results of the power of a wave energy generation boat are given at different time spans. It’s showed that the LSTM-BP model can be used to predict the output power of wave energy generation well.

Private information retrieval (PIR) is a classic problem in theoretical computer science and cryptography. In recent years, new directions on PIR arise due to its connection with distributed storage systems. A distributed storage system containing N servers and storing a database of M files is studied. It is supposed that each file is stored independently via an (N,K)-MDS code. A PIR scheme allows a user to retrieve a specific file from the database privately and any T colluding servers cannot learn any information about the index of the retrieved file. A key problem is to analyze the PIR rate, which is the maximal number of bits privately retrieved per one downloaded bit. Optimal PIR schemes have been constructed in the classic model. In real life applications, the transmission of data suffers from erasures, noises, or even being intentionally tampered by a third party. Therefore, in this paper, PIR schemes with erasure-correcting and error-correcting properties are considered. Based on the PIR schemes in classic settings, additional coding strategies are used to bring in more redundancy among the queries and thus obtain PIR schemes suitable for erasure-correcting and error-correcting models. In addition, the PIR rates for these schemes are computed.

In this paper, the following integrable differential system is investigated:
$\left\{ \begin{aligned} & \dot{x}=-y(y+1)^{2}+εf(x,y), \\ & \dot{y}=x(y+1)^{2}+εg(x,y), \end{aligned}\right.$
where $0＜|ε|\ll 1;f(x,y)=\sum^{n}_{i+j=0}a_{i,j}x^{i}y^{j}$,and $g(x,y)=\sum^{n}_{i+j=0}b_{i,j}x^{i}y^{j}$. It is proved that the system has exact n limit cycles by using averaging method of first order.

The projection algorithm proposed by Ye M L and He Y R is further studied in this paper. Under the condition that the solution of the dual variational inequality is non-empty, an improved double projection algorithm for solving the non-monotone variational inequality is proposed by constructing a new projection region of the projection operator, and its global convergence is proved.

The structure of negative binomial regression model selection is constructed, and the asymptotic properties of logarithmic likelihood function and its dependence on relation function in model selection are studied. The law of iterated logarithm for maximum likelihood estimation of model parameters is derived, and the strong consistency criterion for selecting such models is established. It is proved that under some general conditions, if the order of penalty terms increases with the dimension of the model and is between O(lnln n) and O(n), the model selection criterion consisting of negative maximum logarithmic likelihood and penalty terms almost necessarily chooses the simplest correct model.

Ketone-aldehyde resins are widely used to improve the gloss and adhesion of coatings due to its good solubility and compatibility. It’s inevitable to develop waterborne coatings because of environmental problems caused by the generation of VOC during the production and use of solvent-based coatings. Therefore, coating additives such as ketone-aldehyde resins must meet the demand for being waterborne. Ketone-aldehyde resins with low molecular weight were synthesized by the catalysis of solid base hydrotalcite and their water solubility were investigated. The reaction kinetics was primarily studied by monitoring the consumption of formaldehyde during the reaction. The effects of reaction conditions on the yield and viscosity of resins were investigated, and the synthesis process of water-soluble ketone-aldehyde resins was optimized. The results showed that aldol condensation and intermolecular dehydration occured simultaneously during the reaction. Under more suitable reaction conditions (molar ratio of formaldehyde to cyclohexanone: 1.2∶1.0, reaction temperature: 90 °C and amount of hydrotalcite added: 10% by mass of cyclohexanone), the yield and viscosity of resins were 86.42% and 0.46 Pa·s respectively.

The chemical constituents of Antenoron filiforme were isolated and purified by silica gel, MCI GEL CHP 20P, macroporous adsorption resin, Sephadex LH-20 and ODS chromatography, and their structures were identified by physical and chemical properties and spectral methods. Seventeen compounds were isolated and identified as 2-methyl anthraquinone, epifriedelanol, lupeolacetate, emodin, physcion, ursolic acid, ellagic acid, caffeic acid, protocatechuic acid,vanillic acid, quercetin, epicatechin, apigenin, kaempferol, rutin, rhamnose, and nobiletin. All compounds are isolated from A. filiforme for the first time.

To establish an HPLC method for the quantitative of five nucleoside components in Pheretima aspergillum (E. Perrier).The mobile phase was eluted with Diamonsil C₁₈ (250 mm× 4.6 mm, 5 μm) by using methanol-water solution (5∶95) such as mobile phase with a flow rate of 1.0 mL/min and a detection wavelength of 254 nm. The column temperature was 30 ℃. The contents of 5 nucleoside components in P. aspergillum (E. Perrier) were determined. Uracil, hypoxanthine, uridine, inosine and guanosine showed a good linear relationship in the range of 14.84～111.30 ng (r=0.999 9), 126.00～945.00 ng (r=0.999 8), 63.60～477.00 ng (r=0.999 9), 612.00～4 590.00 ng (r=0.999 8) and 41.60～312.00 ng (r=0.999 9), with average recovery (n=9) of 99.27%, 99.14%, 98.59%, 98.69% and 99.91%, respectively. The RSD(n=9)was 0.95%, 0.86%, 1.01%, 0.86% and 1.91%, respectively. The contents of uracil, hypoxanthine, uridine, inosine and guanosine in 20 batches were 0.051 0~0.111 0, 0.243 1~0.943 6, 0.171 9~0.508 0, 1.559 6~3.861 1 and 0.165 5~0.250 1 mg/g, respectively. The content of 5 nucleosides was 3.309 9~4.565 9 mg/g. The established method was simple, reliable, reproducible and accurate, and can be used for the simultaneous determination of 5 nucleosides in P. aspergillum (E. Perrier).

It’s necessary to compare and evaluate the advantages and disadvantages of infrared camera surveys with different sampling strategies to further understand the performance of biodiversity monitoring programs. From August 2012 to April 2015, 35 infrared cameras and 32 infrared cameras were set according to a hectare grid sampling strategy, and a square kilometer grid sampling strategy, respectively, at Nonggang National Nature Reserve to monitor mammals and forest birds continuously. It’s found that: (1) Within the same survey duration, accumulation of mammal species information in the kilometer grid sampling strategy was faster than those in the hectare grid sampling strategy; (2) There was no significant difference in the number of species detected by the two sampling strategies, but species composition was different; (3) Sampling rate and utilization rate for large and medium-sized mammals were higher in the kilometer grid sampling strategy, whereas sampling rate of small mammals was higher in the hectare grid sampling strategy. These results suggested that different sampling strategies may be required for different taxonomic groups and research questions.

Wild type (Sdr9c7^+/+) and heterozygote type (Sdr9c7^+/-) male mice were used to analyze the effects of Sdr9c7 gene on the growth and development under regular chow diets and high-fat diets, and the physiological and biochemical indicators of blood and liver steatosis of mice under high-fat diets were also measured. Results: (1) Compared with Sdr9c7^+/+ mice, Sdr9c7^+/- mice developed normally, and there was no significant difference in their body weight curves. (2) When the mice fed with high-fat diet to 15 weeks of age, there was no difference in the level of blood glucose (GLU), serum total cholesterol (TCHO), triglyceride (TG), low-density cholesterol (LDL), alanine aminotransferase (ALT), alanine aminotransferase (AST), urea (BUN) and creatinine (CREA) of the mice between the two groups. At the age of 28 weeks under high-fat diets, the AST and ALT levels in the heterozygote group were significantly increased (P<0.05), suggesting that Sdr9c7 might be associated with hepatitis, but there was no significant difference in liver coefficient and cell vacuole area of paraffin section, indicating that Sdr9c7 gene had no effect on hepatic steatosis.

In this research, two community types of felling interferes clonal production (FICP) and non-interfering clonal production (NICP) in Alchornea trewioides were studied in the karst habitat of Guilin. The multivariate statistical method was used to analyze ground diameter, numbers of ramets and basal diameter of the front part and the rear part, to discuss the clonal characteristics of A. trewioides for adaption to karst habitat, in order to provide guidance for vegetation restoration in the karst areas. The results showed that (1) the roots of A. trewioide were weak in branching, and strong directions. The ramets were not dense, showing as "guerrilla" clone plants. (2) FICP promoted clonal reproduction of A. trewioide. (3) The ramets’ survival rate of FICP was lower than that of NICP, indicating more obvious risk allocation in FICP than NICP. (4) There was an asymmetry between lateral roots of the front and rear parts: The lateral root of the rear part was smaller than the front one, when the ground diameter was less than 0.2 cm. However, when the ground diameter was more than 0.2 cm, the lateral root of the rear part was larger than the front one.

Disscusion of coupling and coordinated development of tourism industry and regional economy is conducive to promoting the sustainable development of regional tourism industry and regional economy. Based on the coupling coordination model and exploratory spatial data analysis, this paper takes 26 cities in the Yangtze River Delta urban agglomeration as the research subjects to analyze the spatial and temporal differences of the coordinated development of tourism industry and regional economy in the region from 2000 to 2017. The results show that: 1) the overall level of tourism development in the region shows an upward trend, with Shanghai developing fastest, with an average growth rate of 23%. There are large spatial differences and unbalanced development; 2) the level of economic development shows an increasing trend year by year, and the spatial differences gradually narrow, and the development from polarization to balanced distribution. 3) The degree of coupling and coordination is increasing year by year. Hefei and Chizhou are the fastest growing cities, while Yancheng, Nantong and Maanshan are the slowest growing cities. 4) The degree of coupling coordination decreases from southeast to northwest. Accordingly, suggestions are put forward from the aspects of construction management mechanism, economy-driven tourism, product research and development, regional cooperation and so on, in order to promote the coupling and coordinated development of tourism industry and regional economy in the region.