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To improve E-Commerce recommendation efficiency for multi-consumer population, coordinative optimization problem for multi-consumer purchase is studied. Multi-objective coordinative optimization model for multi-consumer purchase in E-commerce (MCOMMPE) is established, the optimization objectives consist of maximizing purchase probability, profit, green product orientation; minimizing lost consumer number; keeping equalization among varied purchase schemes. To solve easily, MCOMMPE is transformed into single objective optimization model. Cultural Immune Algorithm (CIA) is studied, affinity degree calculating, clone selecting, antibody population space and belief space are studied in detail, and the basic steps of CIA are designed. The validity of MCOMMPE and its CIA are validated.

For boosting public greenbelt (PG) construction level, hastening urban ecological civilization construction velocity, the optimization model and its algorithm for urban PG layout is studied. The layout optimization presupposition of urban PG is described. The bi-objective optimization model for urban PG layout is established. The optimization objectives consist of maximum consistency between PG distribution and population distribution, maximum PG area in certain region. In model constraints, budget capital investment sum for PG construction, distance tolerance threshold from each citizen’s habitation to nearest PG, sum of PG needed to be upgraded and reconstructed from grade two to grade one, minimum oxygen supply capacity from given greenbelt, maximum potential supply area of PG. Genetic algorithm (GA) is employed to solve above model, the main cycles of GA for above model are designed. Above greenbelt layout optimization model and its algorithm are validated.

To explore the performance of the flexible nodes between the precast concrete wall panel and the frame structure, a steel truss is used as an analogue of the frame structure to develop a test. In the test, one precast concrete wall panel was installed on the steel truss, and the connection nodes are designed to be able to slip vertically. Different horizontal forces were exerted on the steel truss to form certain drifts, and the deformation of panel and the slipping performance of the connection nodes were explored. It is found that precast concrete wall panel wont deform under the influence of the drifts, while the connection nodes between the frame structure and the panel were found to slip. The results show that the design of slipping connection node has enough reliability.

The reactive dyes originally designed for cotton were applied to silk printing. The influence of alkali category and dosage, temperature and relative humidity of vapor was discussed in the case of the use of 2% dye, and the staining on white ground during soaping was also discussed. The satisfactory printing effect was achieved when 1% NaHCO3 or KHCO3 was used as an alkaline agent, and steaming was performed at 102-105°C and 90% relative humidity. The level of staining on the white ground was found to vary with dye catagories. This study indicates that the specially selected reactive dyes can be successfully used in silk printing.

This document introduces the basic principle of the ELAC System (Elevator Aileron Computer System) working of A320 aircrafts, and mainly, analyzes the driving circuit of the ELAC computer for the flight control surfaces. Furthermore, introduces a real fault on line maintenance, analyze it and find out the reason, give some useful advice on A320 aircraft line maintenance.

This article analyzes the "cloud computing" concept and characteristics, and the application of "cloud computing" in the army informatization network from the five areas, introduces several challenges brought about by cloud computing.

To resist algebraic attacks, a high algebraic immunity is now an important criteria for Boolean functions used in stream ciphers. In recent years, several constructions of Boolean functions with maximum algebraic immunity (MAI) have been investigated. In this survey paper, we review the recent constructions of Boolean functions with MAI, and classify those into several different classes by the construction idea. Further, we also present some results and developments of these methods, including some results of the authors.

This thesis firstly introduces Back-Propagation Network, the model for the theory and the common process. And we view from two perspectives: the running hour of vehicles and passenger distributed capacity, and adopt Back-Propagation Network into vehicle coordination. We prove that coordination based on Back-Propagation Network is correct through examples.

The pre-stressed friction loss formula in bending channel recommended by Bridge Rules was based on the uniform distribution hypothesis of contact pressure. From some conflicts in application of the formula, the non-uniform distribution law of the contact pressure was revealed. On the basis of elastic contact analysis, two types of non-uniform distribution hypothesis were proposed, including cosine and second-degree parabola distribution. Then the contact positive pressure expressions were derived respectively and the frictional resistance was calculated to compare with the calculated value under the uniform distribution. The results indicate that the friction resistance under any non-uniform distribution of positive pressure is less than under the uniform distribution. So the uniform distribution assumption of contact pressure does not cause Bridge Specifications formula underestimate friction loss. It is necessary to do further research on the applicability of Coulomb’s law under the contact conditions in the curved channel.

This paper introduces the OLSR routing protocol,IPv4 and IPv6 address protocol's characteristics and internal mechanism.Through simulation, we will see the performance of OLSR routing protocol based on IPv4 and IPv6 address protocol.Experiments show that less HELLO message and TC message will need and smaller jitter will get while using the OLSR routing protocol based on IPv6.But bigger delay and smaller throughput will appear compared with OLSR routing protocol based on IPv4 address protocol.