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The near space airships usually have a large volume. when the airship leave the boathouse, it is influenced by the near surface wind significantly, and the attitude of the airship will change, and the risk of the experiment will be increase. In this paper, the dynamics method is used to analyse the force in the mooring rope and the attitude of the airship with nosecone constraint. The kinetic equation is established. A typical near space airship is choose as an example. The Runge- Kutta method is used to solve the dynamic equation. According to calculation result, the change law of the force in the mooring rope and the attitude of the airship is given, which can provide reference for the near space airship experiment. For the airport in this paper, the force in the mooring rope near the tail in the windward side is bigger than the others. The stronger rope should be used in design.

Operating rules have been used widely in the reservoir long-term operation duo to its characteristics of coping with inflow uncertainty and easy implementation. And implicit stochastic optimization (ISO) has been widely applied to derive reservoir operation rules, based on linear regression or nonlinear fitting method. However, the maximum goodness-of-fit criterion of fitting method may be unreliable to determine the effective rules. Therefore, this paper develops a self-optimization system dynamics (SD) simulation of reservoir operation for optimizing the operating rules, by taking advantages of feedback loops in SD simulation. A deterministic optimization operation model is firstly established, and then resolved using dynamic programming (DP). Simultaneously, the initial operating rules (IOR) are derived using the linear fitting method. Finally, the refined optimal operating rules (OOR) are obtained by improving the IOR based on the self-optimization SD simulation. China’s Three Gorges Reservoir is used as a case study. The results show that the SD simulation is competent in simulating a complicated hydropower system with feedback and causal loops. Moreover, it makes a contribution to improve the IOR derived by fitting method within an ISO frame. And the OOR improve effectively the guarantee rate of power generation on the premise of ensuring power generation.

A Mg(II) complex, [MgL·(H2O)3]·2H2O (H2L = 2,6-pyridinedicarboxylic acid), has been synthesized and characterized by elemental analysis, IR and X-ray single crystal diffraction analysis. The Mg(II) complex belongs to monoclinic, space group P21/n with a = 8.9318(18) Å, b = 10.002(2) Å, c = 13.290(3) Å, β = 96.86(3)º, V= 1178.8(4) Å3, Z = 4, Dc = 1.575 mg·m-3, μ = 0.192 mm-1, F(000) = 584, and final R1 = 0.0349, ωR2 = 0.1212. Structural analysis shows that the Mg(II) center is six-coordination with a NO5 distorted octahedral coordination environment. The Mg(II) complex forms 1D chain structure by the interaction of hydrogen bonds and π-π stacking.

A novel Zn(II) complex, [Zn(L)(H2O)3]·2H2O, has been obtained by reaction of Zn(OAc)2·2H2O with 1,2-phenylenedioxydiacetic acid in CH3OH/H2O. It was characterized by elemental analysis, IR and X-ray single crystal diffraction analysis. The crystal of the title complex belongs to monoclinic, space group C2/c with a = 29.283(7) Å, b = 6.7305(15) Å, c = 17.243(3) Å, β = 109.25(3)º, V = 3208.4(12) Å3, Z = 8, Dc = 1.621 mg·m-3, μ = 1.590 mm-1, F(000) = 1576, and final R1 = 0.1284, ωR2 = 0.3895. X-ray analysis reveals that the Zn(II) center is seven-coordination with a O7 distorted pengonal bipyramidal coordination environment. The Zn(II) complex molecules form 1D chain structure by the hydrogen bonds and π-π stacking interactions. The antitumor activity of 1,2-phenylenedioxydiacetic acid ligand and its Zn(II) complex against human intestinal adenocarcinoma HCT-8 cells, lung adenocarcinoma HCT-116 cells and human lung adenocarcinoma A549 cells line have been investigated.

A novel Mg(II) complex, [Mg(HL)2•(H2O)4]•4H2O•HCl (HL = 1,2-phenylenedioxydiacetato), has been synthesized by the reaction of 1,2-phenylenedioxydiacetic acid, NaOH and MgCl2•6H2O in one-pot. The compound was characterized by X-ray single crystal diffraction analysis. The crystal of the title complex belongs to monoclinic, space group Pn with a = 10.772(2) Å, b = 9.7145(19) Å, c = 13.996(3) Å, β = 104.32(3)º, V = 1419.1(5) Å3, Z = 2, Dc = 1.498 μg•m-3, μ = 0.245 mm-1, F(000) = 658 and final R1 = 0.0653, ωR2 = 0.1913. The molecules are connected by π-π stacking to form three dimensional network structures.

Some integral type boundary value problems (BVPs) for second order differential equations (ODEs) with one-dimensional p-Laplacian on the whole line are discussed. Sufficient conditions to guarantee the existence of solutions are established. The emphasis is put on the one-dimensional p-Laplacian term [ρ(t)Φ(x'(t))]' involved with the nonnegative function ρ that may satisfy $\rho(0)=0$, and the differential equations are defined on the whole line.

In order to improve the user ' s ability to access websites and web pages, according to the interest preference of the user, the personalized recommendation design is carried out, and the personalized recommendation model for web page visit is established to meet the personalized interest demand of the user to browse the web page. A webpage personalized recommendation algorithm based on association rule mining is proposed. Based on the semantic features of web pages, user browsing behavior is calculated by similarity computation, and web crawler algorithm is constructed to extract the semantic features of web pages. The autocorrelation matching method is used to match the features of web page and user browsing behavior, and the association rules feature quantity of user browsing website behavior is mined. According to the semantic relevance and semantic information of web users to search words, fuzzy registration is taken, Web personalized recommendation is obtained to meet the needs of the users browse the web. The simulation results show that the method is accurate and user satisfaction is higher.