It was pointed out that the definition of energy velocity has clear meaning only for a ray of electromagnetic waves with definite frequency and wave vector. Then, some explanation and proof were provided.  By calculating the average energy velocities and the phase velocities of electromagnetic waves in boundless linear media and typical transmission lines, it arrives at the conclusion that：when the electromagnetic wave propagates through linear media by TEM mode, the average energy velocity equals the phase velocity; if electromagnetic waves are transmitted by the TEmn mode or TMmn mode through a transmission line, the average energy velocity is variable on the wave front, and it is always lower than the phase velocity or the speed of light in the vacuum.

A nonnegative least square (NNLS) algorithm was applied to inversion computation of particle size distribution in photon correlation spectroscopy. Four monodisperse particle samples were measured by NNLS, and the results were compared with those measured by the instrument of Brookhaven Company and the nominal diameter of the samples. The comparative results show that the nonnegative least square algorithm works precisely on inversion computation of the diameter and size distribution of monodisperse particles.

Along a clue of the energy conservation, different type dilatancy equations of homogeneity sands, such as Taylors, Camclays, modified Camclays, Rowes and expanded Rowes et al. are reviewed and commented systematically, and transferring formulations between the dilatancy equations and their plastic potentials are given in detail. At last, it is pointed out that the obvious shortcoming of LadeKim and Nova plastic potential functions, which is that the two potential functions are not reasonably incorporated in the concept of critical state.

With regard to the treatment of the loess foundation of the sixth contract part by Changfeng West Highway Embankment Construction, it discusses in detail the construction preparation and preconsolidation to determine the compaction parameters. The dynamic compaction was applied in the treatment of collapsible loess foundations. The results of testing and quality control are presented.  

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Base on the characteristics of high cooling energy consumption and the requirements of brightness and transparency, the renovation scheme of filming the curtain walls is proposed for a typical glasscurtainwall building, which is a university library situated in Guangzhou Higher Education Mega Center. The energy saving potential and economical analysis were simulated and calculated by the energy simulation tool of DeSTc, a composite film of IQue 28H selected as the renovation film. Moreover, the various combinations of filming the different facades were also simulated and calculated. The simulated results support the energy saving renovation of this building.

Some factors were summarized systematically according to the research in China and abroad in recent years, including convection flow state, phasetransformation, geometric factors, fluid pulse, fluid physical properties and viscosities. At the same time, some methods of enhancing heat transfer in tubes were also summarized, such as additives, electrohydrodynamical, metal foam filled pipes etc. Finally, the characteristics and the method of heat transfer enhancement were analyzed in highmedium temperature solar power systems.

The 9node isoparametric element of Hamiltonian canonical equation has been established by combining the modified HellingerReissner (HR) variational principle of elastic material and quadratic interpolation function of 9node quadrilateral isoparametric element. Firstly, the modified HR variational principle for the elastic material was briefly presented. Then, based on the variational principle and the 3×3 Guass integration, the Hamilton canonical equation of 9node isoparametric element was derived in detail. The advantages of 9node isoparametric element in finite element were combined with the semianalytical method of elasticity Hamilton canoncial equation organically. The results of numerical examples prove the correctness of the 9node isoparametric element formulation.

It introduces the GM(1,1) model of the gray predication theory and its application in the predication of highway traffic flow. The Butterworth low pass filter was applied to correct the error for the GM(1,1) model. The new method for error correction improves the accuracy and the stability of the GM(1,1) model. The predication system can fully meet the requirements of the clients, and it has some practical significance and reference value.
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According to the randomness in the process of vehicle navigation, it sets up the stochastic programming model with the shortest travel time for target function in the path planning of vehicle navigation. The design of the genetic algorithm was based on the stochastic simulation to obtain the model. The simulation results prove the feasibility of the model.

A genetic algorithm, based on the classification of the auxiliary group, was proposed. The algorithm overcame the weakness that diversity of the auxiliary group was not perfect, and with prior knowledge it classified the auxiliary group into several subgroups. After the classification, it is more favourable for the auxiliary group and the main group to evolve. Meanwhile, the diversity of the auxiliary group is maintained. The results show that the improved algorithm is more effective than some other existing genetic algorithms. The improved algorithm avoids being trapped into the local optimum, thus deriving the global optimum.

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With the method of the Empirical Mode Decomposition (EMD), it studied the separation of the signals formed through linear superposition of two sinusoidal signals. Furthermore, it analyzed how the frequency and amplitude of the signals can affect the result of separation . Multiple experiments show that the bigger difference in frequency or the smaller difference in amplitude between the two signals there is, the more obvious the separation effect is.

The image of the information about the shape of defects in the shuttlecock process ball was obtained after pretreatment of the images of the shuttlecock process ball. Then, the five polarradius moment invariants, circularity, and the difference between the cylindrical part and the center of the ball in processed images were extracted. The seven normalized eigenvalues were input into the BP neural network, based on LevenbergMarquardt algorithm, and the trained network was used to be a detector to recognize the image pattern. Experimental results show that a relatively good recognition performance can be achieved to detect defects in shuttlecock process balls.

It uses the sevenlink model for humanoid robots to establish the robot posture vector. First, a polynomical equation with five parameters was used to fit the robot hips curves, and then a nontime reference variable was used to work out the robots ankle and knee trajectories. In the region where the robot can walk stably, the maximum distance for the robots ZMP deviation from the foot center was obtained by using the genetic algorithm. At the same time, the parameters of the hip were determined to optimize the humanoid robot gait. Experimental results show that this method is effective.

It mainly studies the application of ZigBee technology and GSM transmission network in the design of the control system for intelligent homes. Two ZigBee terminal nodes and a master controller were designed to compose the wireless sensor network experimental platform so that the parameters of intelligent homes were collected and controlled. The results show that the user  uses the portable mobile phone to monitor the home control system whenever and wherever he can. 

Regarding the problem with the network delay of the network control systems, the random time delay modeling method is used. First, interval delay under different conditions was put into a range of variables. Secord, the state feedback controller was designed, based on linear matrix inequality, Third, by describing the system model with the norm bounded by the uncertainty of discrete Markov jump systems, the random stability of the system was analyzed. Numerical simulation verifies the effectiveness of the algorithm.

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Equality of Bayes linear unbiased estimator for βi in linear model  M and M1is discussed, and the necessary and sufficient conditions are derived for the Bayes linear unbiased estimator in the partitioned linear model 〖WTHX〗M=(y,X1β1+X2β2,T) to be the sum of the Bayes linear unbiased estimators under the two small models M1=(y,X1β1,T)〖WTBZ〗 and 〖WTHX〗M2=(y,X2β2,T)

The notion of base countable metacompact space is introduced through researching the relation between base countable metacompact space and its subspace. From the research, it draws the conclusion that basenormal countable metacompact space is base countable metacompact space, and it proves that open closed finite to 1 map preserves base countable metacompactness.

It presents the ideas of cycle embedding in star graphs with conditional edge faults to solve the same problem in (n,k)star graphs. This problem can be solved in two ways to prove that the length of faultfree rings in  Sn,n－2 ranges from 7 to n!2－1, with |f|=1 and （n≥4）.Moreover, each cycle of the available length in an   can contain a desired 1edge.

It researches the application of Monoglycerid Ester in nondairy creamer. Different emulsifier components of glycerol monostearate , mono- and di-glycerid ester and unsaturated monoglycerid ester were obtained. Experimental results show that the odors are different when different components are added to the coffee.

Based on the analysis of much related literature in recent years, it introduces some of the latest technologies. Meanwhile, it sums up the development of nanofibers in the two directions, microdirection and macrodirection. In the microdirection, more studies will focus on improving positioning accuracy, microfiber uniformity and so on. In the marodirection, spinning efficiency and orderly collection will be emphasized. This study provides a new way of thinking for further development of electrospinning technology.

With the fluctuation of the stock market, uncontrollable economy, people's different expectations of profit rates and their different degrees of endurance against risk, stock investment has uncertainty. Because of the uncertainty of expected profit rate and practical yield, it is difficult to measure accurately the profit rate.  Regarding the dissatisfactory stock, it built the matterelement model of investment portfolio, designed some index of stock characters, fixed the power quotiety of scale index, calculated satisfaction degree of stock, and proposed the method to transform investment portfolio.  

In view of the contradiction between job requirements and job seekers’ expectations, solutions to the problem, based on extension theory, are discussed. According to the frame of extension strategy generation system, a core model for the problem was established. The available resources of job seekers were analyzed, and strategies were generated to solve the problem by extension reasoning and extension change. Better strategies were obtained with the evaluation of goodness. The process of extension strategy generation system for employment issues was introduced, based on JavaEE and mySQL and experimental results were provided.