We constructed bivariate non-tensor compactly supported prewavelet with symmetrical property, and discussed why our constructed prewavelets are adapted to image edge detection, and put forward an effective edge detection algorithm of non-tensor wavelets according to the feature of our constructed non-tensor wavelets, in which the key is how to distinguish the noise from the image edge information. For different images, we detected edge by our method, compared the detechion with Sobel edge detection operator and Canny edge detection. From the examples, the performance of our method is obviously better than Sobel edge detection and is almost equal to Canny edge detection, and for the image with visible texture such as the fingerprint image, our method is a little b etter than other methods.

By means of introducing a parameter λ and the β function, and improv ing weight function, a reverse Hardy-Hilbert's inequality with a best constant factor is obtained. As applications, some equivalent forms and some particular results have been established.

The space-like hypersurfaces with constant scalar curvature in a de Sitter space were studied and a pinching theorem on the square of the norm of the second fundamental form was obtained. This theorem has improved the results obtained by LI Hai-zhong who firstly studied the rigidity problem for a hypersurface with constant scalar curvature by introducing a self-adjoint second order differential operator.

4-order nonsingle-valley Feigenbaum's maps without simple periodic orbits must bring chaos, chaos also bring the complication of the problem on the existence of likely limit sets. We testified the existence of the maps' likely limit sets using the method of fractal geometry and estimated their Hausdorff dimension. In the end, we gave an idiographic example to proof the existence of 4-order nonsingle-valley Feigenbaum's maps without simple periodic orbits.

Let Ω be a multiplicative left(right) cancellative monoid, S=_x∈ΩS_x and T=_x∈ΩT_x be two Ω-graded rings with 1, and B=_SB_T=_{x∈ΩBx be a Ω-graded (S,T)-bimodule, R is the graded triangular matrix ring determined by S,T and SBT. It is shown that if SB is graded faithful then R is a graded nonsingular ring if and only if T is a graded nonsingular ring and BT is a graded nonsin gular module.}

The optimality conditions of the constraint nonsmooth programming problem are discussed on R, under γ-vexity assumptions, by using γ-subdifferen tiation. The theorem of the local minimum of γ-vex function must be the global minimum is proven, and necessary conditions and optimality sufficient conditions of constraint nonsmooth programming are given。

In this paper, the dynamical system character of one-dimension simple cellular automata is studied. And the chromosome telomere conce pt is introduced to the field. We proposed a homogeneous dynamical evolution equation of the chromosome telomere in the one-dimension cellular automata. The chromosome length and its variational rate equations are obtained by using above chromosome telomere evolution equation. We have primarily founded the mathematic theory on the chromosome evolution of cellular automata which will provide the theoretics foundation for cellular automata mechanism research.

The existence and uniqueness of renormalized solutions of a class of strongly degenerate quasilinear parabolic equations under certain assumptions are discussed.

A newsboy problem with reduced-price selling was proposed on the basis of the existence of maximum reduced-price selling quantity and a method was given to solve the problem. On the other hand, the profit, service level, sensitivity analysis etc of the new model were compared with those of the classical newsboy model.

We consider a thermoelastic system described by partial differential equations with initial and boundary conditions. We defined an appropriate Hilbert space and a partial differential operator based on the considered thermoelastic system, and transferred the system to a first-order evolution equation in the Hilbert space. Since the characteristic of the variable structure is a sliding mode motion, that is, a lower dimensional motion, the state of the system can be restricted under some manifold in the state space of the system. We discussed variable structure control and designed a sliding mode of the th ermoelastic system so as to make the system realize sliding mode motion during a finite time interval no matter which position the motion started from, and the whole system to be stable. By means of the semigroup of linear operators we proved the feasibility of the equivalent control equation to be appl ied to the thermoelastic sysytem. Eventually, we have designed a sliding mode control of the system and have shown that the thermoelastic system is exponentially asymptotical stable under the control designed.

The parallel algorithm of nonlinear dynamical equation is studied, the nonlinear shock system was analyzed and calculated by means of the method of power series expansion and some practical examples are given.

A new model is proposed for improving password security with a heuristic method which tries to find out the password core by reasoning just like a hacker usually does in social engine and then transforms the password core into kinds of passwords to check whether the right one is in them. With this model the design and implementation of an audit tool called PassChecker are described. With this method the PassChecker can improve the efficiency and efficacy of ch ecking weak passwords.

Aiming at the constrained optimization probl ems, we introduced the concept of semi-feasible region, proposed a novel rule of tournament selection, and improved the fitness function of evolutionary algorithm which is based on tournament selection and penalty function. Making use of characteristics of Particle Swarm Optimization (PSO), we designed a selection operator for the semi-feasible region and proposed a novel evolutionary algorithm for solving constrained optimization problems. Numerical experiments demonstrate the effectiveness of the proposed algorithm.

According to the characteristic and the important value in the practice of ATLAS language, ATLAS meta-programming system ATLAS_MPS is designed and implemented by using object-oriented technology. And ATLAS is already implemented with this system.

An automatic and dictionary-free Chinese word segmentation method based on suffix array algorithm is proposed. By the algorithm based on suffix array and by using HashMap the co-occurrence patterns of Chinese characters are gotten, and Chinese words are filtered through confidence. Experiment results show that by the algorithm one can acquire high frequency lexical items effectively and efficiently without the help of the dictionary and corpus as well. This method is particularly suitable for lexical-frequency-sensitive as well as time-critical Chinese information processing application.

In this paper a new method of generating computer realistic images is described. For certain nonanalytic curved surfaces, we studied further modeling method and rendering method based on surface element. Making use of ray tracing technology with global illumination and meanwhile combining it with the new method, we obtained several realistic images and consequently got better results. By the method mentioned in this paper some problems existed in the traditional method are solved effectively.

Based on fuzzy set theory, a hybrid spatial reasoning approach is proposed that combines qualitative spatial reasoning with quantitative one. The spatial relations among objects are interpreted as restrictions on l inguistic variables that represent spatial information about the objects, and the linguistic variables are provided to express qualitative spatial relations, and then these variables are associated with fuzzy sets for quantitative spatial information. By mapping linguistic values to fuzzy sets and elements of fuzzy sets to linguistic hedges, it is possible to switch back and forth between qualitative spatial information and quantitative one. Besides, we realized the reasoning of these spatial relations by showing that each Allen's basic binary relat ion can be associated with a fuzzy relation and obtaining an Allen's algorithm based on these fuzzy relations.

A new method to retrieve the key-frame of the video is proposed, by analyzing the structure and characteristic of video frequency. We first used the method of linear regression to detect the scene change. From the results of test, it is shown that this method improves video stream segmentation veracity evidently.

To increase the output power and slope efficiency of up conversion ultraviolet(UV) laser based on the 4f5d state of rare-earth ions doped in hosts, upconversion UV amplifiers can be structured to amplify the output power of oscillators. The laser kinetics for the upconversion UV fiber amplifier based on the transition from 4f5d to the ³H₄ gr ound state in Pr³⁺∶ZBLAN fiber was investigated by using steady population rate equations and propagation equations. The saturation signal power, output power, slope efficiency and optimum fiber length were calculated. There exists a saturated power of input signal. The laser output power is almost independent of the input signal power when the signal power exceeds the saturated value. When the input power is greater than 1 mW, both the output power and the slope efficiency of the amplifier are 2 to 3 times those of the oscillator under the same conditions. The conclusion is that the fiber amplifier can greatly enhance the output power and the slope efficiency of 4f5d upco nversion Pr³⁺∶ZBLAN fiber laser.

The effects of a small amount of rare earth (RE) elements added on the hardness and hydrogen embrittlement of an aged and retrogressed-reaging Al-Zn-Mg alloy were investigated. Scanning electron microscopy and X-ray diffraction were employed to study the microstructure and the precipitation phase of the alloy. The addition of REimproves the precipitation of a streng thing phase (MgZn₂) and decreases the grain size. By the addition of RE, the strength, hardness and elongation of the alloy at peak-aging can be improved, the hardness and hydrogen embrittlement resistance of the alloy after aged-retrog ressed-reaged can be enhanced.

The paper presents the experiment equipment for the measurement of the elastic-optic effect of curled birefringence fiber, then analyzes spectrogram at winding loss, and the rule of the circle of optical fiber producing elastic-optic effect.

By means of the acoustic source model of multiple receiving points from excessively long source distance and the numerical simulation computation of the acoustic full-wave in the borehole, the feasibility and method of using reflected wave to detect the transverse interface of the cylindrical multi-layered media were investigated. An array of full-wave curves of the cylindrical triple-layered fluid-solid-solid borehole system that is 30 m away was calculated, and the reflected wave from the interface far from the borehole was clearly shown, which agrees fairly well with the time-distance curve calculated by virtue of the theoretically derived equations of source distance-arrival time of reflected wave. Finally, a cross-section chart of the interfa ce time(depth) records after adjustment (without the influence of tube wave) was drawn, and the information of interfacefar away from the borehole (of in- phase axis) was clearly presented.

The colossal magnetoresistance manganite(CMR) La_0.67Ca _0.33MnO₃ was prepared by conventional solid state reaction meth od. The dynamic magnetic transition was investigated by EPR experiment near the Curie temperature T_c, and the results are in agreement with the magne tization experiments. The EPR investigation indicated that the compound was in t he paramagnetic phase above 272 K, whereas it was in the ferromagnetic state bel ow 260 K.

The minimum time principle was generalized. It is assumed that in global time zeroed coordinate, which fits g₀i=0, the optical path makes the coordinate time interval minimum. According to this assumption, the deflection angle of light pass by the sun surface is α=4GM/r=1.75″, which is the same as that obtained before. This is essentially a sustaining of the no super-light velocity principle in general relativity. The basic assumption about the optical behavior is proposed, so it is totally a new theory. A method was given in calculating the optical path, which may be helpful for studying the light transition in cosmic.

The electronic band structures of three ordered states of half-Heusler NiMnSb were calculated by means of LAPW method according to first-principle. The result indicates that the transition disorder between different ordered band states will result in the decreasing of electronic spin polariza bility and disappearing of half-metal character of materials.

Based on the deep study of fuzzy neural networks and hierarchical genetic algorithm, an algorithm is proposed to optimize fuzzy neural network. In the proposed algorithm, the hierarchical coding is adopted to each chromosome, and an improved crossover operater is proposed, so it can evolve both the fuzzy neural network's topology and weighting parameters. Furthermore, a two-objective function is used as fitness fuction to evaluate the structure complexity and the performance of the fuzzy neural networks, and we can confirm the proportion between the complexity and the performance by changing the value of the parameter for a given problem, then we can obtain the near-optimal fuzzy neural network architecture for the problem. Numerical simulations showed the effectiveness of the proposed algorithm.

The electric noise spectral density of 808 nm high-power quantum well semiconductor laser diode showed a descending trend on aging process, producing annealing effect. In this paper, by inducing the theory of initial defect（It is induced by high temperature and high stress）and non-initial defect, the reason of producing the annealing and forepart failure is discussed.

This paper explores the application probability of the organic light-emitting diodes(OLED) in the fields like sensors and optoelectronic devices. A new type of optocoupler made with OLED and photodiodes is studied. Low-frequency analog signals are transferred by the organic optocoupler. Its not suitable for transmitting digital signal or high-frequency signals on present. Our experimentations show that there are obviously distortions when squared-wave is transferred. The results of experimentations also give some hues to the study of carrier mobility in polymer semiconductors.

A method for the determination of trace elements in 5 kinds of traditional Chinese medicines by graphite furnace atomic absorption spectrometry(GFAAS) is described. The matrix modifier used in this work was Ni(NO₃)₂. The e ffects　of matrix quantity, ashing temperature and atomization temperature were investigated. The matrix modifier Ni(NO₃)₂ can not only impro ve the sensitivity of determination, but also eliminate the interference of foreign ions. Under the optimum experimental conditions, cadmium, lead, germanium and arsenium in traditional Chinese medicines such as cortex fraxini, flos sophorae, herba epimedii, radix acanthopanacis and radix scutellarae were determined. The recoveries are between 90% and 110%, the relative standard deviation is less than 8%. This method is rapid and reliable. It is a simple method for the determination of trace elements in traditional Chinese medicines.

A europium-o-phthalic acid luminescent chelate was synthesized in liquid phase. The element analyses, the chemical analysis and FTIR results show that the chelate is Eu₂L₃.6H₂O. The thermal analyses indicate that the chelate has better stability under the temperature of 472 ℃. The XRD pattern shows that the chelate is a crystal. The SEMphotograph shows that the chelate is in block shape and the grain size is 10~20 μm. The PL spectra show that the chelate emits the character fluorescence of Eu underultraviolet light.

Papain was immobilized on a denatured egg white protein as the support with glutaraldehyde as the cross-linker. The effects of pH, the concentration of glutaraldehyde, time and the amount of the enzyme on the activity of the immobilized papain were examined through the experiments of orthogonal test. The optimal condition for the immobilization was set up, i.e., glutaraldehyde concentration is 5%; pH 6.0; the quantity of enzyme used 12 mg/(g support) and the reaction time 20 h. At the same time, the comparative study on the properties of free and immobilized p apain was made. The optimal temperature and pH are 90 ℃ and 9.0, respectively . The K_m for the immobilized enzyme is 53.6 mg/mL. The thermostability and thermotolerance of the immobilized enzyme are obviously increased compared to those of the free one.

The recombinant plasmid containing towel gourd ACC synthase cDNA was successfully transformed into Escherichia coli BL21(DE3) and the ACC synthase expression was significantly induced by IPTG. The expressed protein exists in the form of inclusion bodies. The towel gourd ACC synthase was purified by abstersion and chromatography. SDS-PAGE analysis of the purified protein showed only one band with molecular mass of 55 000.　The optimum pH of the expressed towel gourd ACC synthase reaction is 8.5 and the K_m values of enzyme is 44 .2　μmol/L at pH　8.5.

The bioluminescence immunoassay technique was combined with the colo rimetric method to detect the tumor marker α-fetoprotein(AFP) and tumor specific growth factor(TSGF) of the patients sera of primary hepatocellular car cinom a(53 patients), hepatitis (80 patients) and hepatocirrhosis (34 patients). The re sults show that AFP and TSGF in primary hepatocellular carcinoma sera have signi ficance difference from those in other groups(P<0.01); the positive rate of AFP and TSGF by combined examination was 96.2%. The combined examination of A FP and TSGF can raise the diagnostic rate of primary hepatocellular carcinoma.

The influences of flow rates and pH value on the adsorption of Pb and Cd by the sod layers from Xianghai Wetland were studied by the means of dynamic adsorption experiments. The results show that the penetrative point was advanced and the adsorbance at penetrative point was decreased with the increasing of the flow rates of the solution or the decreasing of pH value of the solution. When Pb²⁺ and Cd²⁺ coexisted with the initial equivalent concen tration, their retention by soil was reduced compared to those when they existed individually, and the reduced percentage of Cd²⁺ was greater than that of Pb²⁺. The dynamic adsorption procedures of Pb²⁺ and Cd²⁺ on the soils can be described via double-constant rate equation and Elovich equation and described better by t he former.

The adsorption of Cd²⁺ and Pb²⁺ onto dominant dead bacteria in natural water was studied. The results show that when Langmuir and Freundlich isotherm models were tried to represent the equilibrium data of Cd²⁺ and Pb²⁺ adsorption onto dominant dead bacteria， equilibrium data fitted very well to both the models in the studied concentration range of Cd²⁺ and Pb²⁺. The kinetic processes of the adsorption included fast phase and slow phase. Pseudo first-order and pseudo second-order kinetic models were also applied to experimental data on the basis of assuming that the external mass transfer limitations in the system can be neglgected and the adsorption is sorption controlled. The slow phase obeyed the second-order rate expression.