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Network security assessment is a complex multi-criteria problem including both quantitative and qualitative factors. In this paper, taken the computer network security evaluation index for a research object, the judgment matrix of index weight was improved based on the fuzzy theory, and a new weight determination approach was proposed to make up the shortcomings of traditional weight determination method and highlight the fuzziness of expert judgment. Meanwhile using fuzzy theory to establish fuzzy evaluation matrix, then combine analytic hierarchy process to set up a fuzzy AHP evaluation model of the computer network security. At the final stage, a security assessment of the system of an institution’s network was to implement to demonstrate the feasibility of the evaluation model.

This paper selects two typical micro-displacement control platforms,and conducts comparative analysis of strength of their flexible guiding mechanism.Stress expressions of flexible guiding mechanism are respectively derived to obtain the relationship between the maximum stress and geometric parameters and the relationship between tensile stress and bending stress.with moving the same displacement,the difference of stress of the two micro-displacement control platforms is small,and can be ignored.

Hospital network office automation system could make the hospital connected by a PC, terminal equipment, medical equipment and hospital networks to link up and connected to the Internet. In this paper, the star tree on the hospital's existing network structure transformation, using port aggregation technology upgrades to existing network data transmission and improve the operating efficiency of the entire hospital network, and the hospital server, computer workstation security configuration and remote management configuration, database and application development of all types of information systems are a good network support.

The overview and analysis of the structure of spiral bevel gear transmission system was presented . The characteristics of transmission and torque of the system were analysis and calculated . Based on high-speed trains operating conditions. The issue that tooth contact of the positive invertion of spiral bevel gear was analysis. The consistency of the positive invertion was desirable. The error curve of the transmission was downward consistently and the curves which were adjacent intersect. The less of the vibration of bridge contacts won`t be happened.

In the paper, sol-gel method has been used to make F-N, Cl-N co-doped TiO2 photocatalyst by the artificial zeolite as a carrier. The optimum doping and the best roasting temperature was found. The results showed that N, F co-doped photocatalyst can calcine at 400 °C, and when used in the best doping ratio as n (n-butyl titanate): n (ammonium chloride): n(N)= 1:0.01:0.012, its degradation rate can reach 92.4% in 3.5 hours. The N, Cl co-doped can calcine at 500 °C, and when used in the best doping ratio as n (n-butyl titanate): n (ammonium chloride):n(N) = 1:0.01:0.012 ,and the degradation rate of up to 88% in 3.5 hours. Scanning electron microscopy SEM and UV-visible spectrophotometry methods were used to analysis them,The results show that the experiment photocatalyst prepared in good condition. In the visible condition of the catalytic performance. The effection of F-N catalytic is better than Cl-N, and the degradation of methylene blue in 3.5 hours can reach 92.4%.

This paper is to investigate the influence of trace element strontium on the content of blood glucose, glycated hemoglobin, triglycerides, non-esterified fatty acid and total cholesterol in type I diabetes rats blood. Methods: Adult Wistar rats weighing 220~250g, half male and half female were used in the experiment. One-time intraperitoneal injection of Streptozotocin (STZ) 60mg/kg was administrated to rats. Three days later, the rats that have fasting blood glucose more than 16.7 mmol/L were the diabetes model rats (DM rats). Then DM rats were randomly divided into group A, rats drinking mineral water with Sr 2mg/L; group B,rats drinking mineral water with Sr 4mg/L; group C, rats drinking mineral water with Sr 6mg/L; group D, rats drinking mineral water with Sr 8mg/L and DM group rats drinking tap water, 32 rats in each group (N = 32). 8 rats in each group after the first month, the second month, the third month, and the fourth month were randomly killed and the blood was collected. Then the blood was used for evaluation of blood glucose, glycosylated hemoglobin, triglycerides, non-esterified fatty acid and total cholesterol.

Carboxymethyl starch (CMS) was used as printing thickener, it was synthesized by carboxymethylation reaction with acid-hydrolyzed maize starch and chloroacetic acid(MCA). The optimum conditions of synthesized CMS were as follows: the ratio of nNaOH/nAGU was 3, the ratio of nMCA/nAGU was 1.5:1, etherification temperature was 65°C. The highest degree of substitution(DS) was 0.45. The maximum value of printing viscosity index(PVI) was 0.513, the best water-retention property was 0.2cm and the solid containing rate was 8%. Compared the synthesized CMS with sodium alginate, the results on printing experiments showed the properties of the CMS were almost the same as sodium alginate. Form FT-IR, it was found carboxyl functional group were show at absorption peak of 1604cm-1,1425cm-1 and 1325cm-1, it indicated that the maize starch were substituted.

A new type of hydrostatic journal gas bearing with axial slot of tangential gas entry for miniature air turboexpander is firstly developed in this paper. This bearing configuration is presented and constructed to fit manufacture simplicity. The experimental investigations are carried out to reveal the relationship between bearing parameters and instability threshold speed. It is feasible to increase the stability of hydrostatic journal gas bearing by adopting this kind of configuration with axial slot of tangential gas entry. Some valuable tested results are obtained to reveal the optimum slot height and radial clearance for this miniature air turboexpander.

While the frame rate is higher and the image size is larger, sequence images processing is harder. Good real-time can be ensured by the multi-core DSP in the embedded image processing system. TMS320C6670 which is the multi-core DSP designed by TI corporation is selected as study object. Based on hardware characteristics analyzed, the Data Flow model is adopted as the multi-core processing model. Two data processing subtasks assigning methods are analyzed by comparing their advantages and disadvantages on the system idle time and memory requirements. The data processing subtask assigning flow is design for a serial sequence images processing example. An inter-core data transfer flow design idea is put forward. Using methods and occasion of two kinds of data buffer establishing techniques is studied and defined. An inter-core notification flow design idea is put forward. Using methods and occasion of three notification methods based on the interrupt controller and the Semaphore2 module is studied and defined.