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According to the feature of test requirement existed inthe flight test and measuring equipments in plane track, the flight test trajectory measurement system is builtand anomaly recognition of flight test trajectory measurement is studied intensively. For the requirement of implementation guide and monitor treatment, the data processing software of flight test real-time trajectory measurement system is designed and programmed. Algorithm model construction and implementation process are also presented in this paper. In addition,real-time measurement and guidance andmonitoring processingare realized through the program. The system has been applied to realtime monitoring of flight test,which has obtain the very good application effect.

Solving gear meshing impact force problems by using ADAMS software is studied.A pair of tooth meshing model is established based on UG, modal neutral file is generated by using ANSYS software, calculating gear meshing impact after Importing ADAMS. The relationship between the impact velocity and the impact force by taking reasonable key parameter about penetration depth in ADAMS simulation.A new approach for studying gear meshing impact is proposed here, and the simulation results show that ADAMS software is a very useful tool for solving gear corner contact shock problems outside the normal path of action line.

Sediment layer can change the dynamic property of reservoir water. As a result, the dynamic response of dam body would be affected. In this paper, the sediment layer is simulated as saturated liquid-solid two-phase media, and the finite element model of gravity dam-reservoir water-sediment system is established with the gradual enlargement mesh method. Then the influence of sediment layer on seismic wave motion is studied with this model. The calculation result shows that the energy radiation of far field of foundation, reservoir water and sediment can be considered efficiently in this model, and with the thickening of sediment layer the dynamic water pressure on dam face decreases.

In this paper, A new type of power-split HEV system based on Ravigneaux Planetary Mechanism is introduced. Using AVL Cruise software established the hybrid passenger car simulation model. The energy management system control strategy based rules is also studied. The effectiveness of the control strategy for the vehicle is proved by UDDC driving cycle. According to the results, fuel consumption saving of five percent than that of the prototype.

To meet users’ actual demands for fine-grained access control (FGAC) to data object in web-based parts resource sharing platform, a FGAC approach for parts resource sharing is proposed to enable both the providers and administrators to manage the permissions of parts resource jointly. In this approach, all levels of detail (LODs) are introduced in the part resource information firstly. Then, a role-based access control model for parts resource sharing, called RBAC_PRS, is provided on the basic of RBAC (Role-Based Access Control) and O-RBAC (Owners-Based Access Control) models, and the permission administration policy is also formulated in condition of the separation between ownership and usufruct of parts resource. To provide the better authorization route, two middle layers: function sets and component sets, are added in permission-role assignment process, and each role’s assignment rules are explicitly specified in an XSLT style sheet. Furthermore, an XML-XSLT based approach is adopted to accomplish the diversity expression of user-accessible view based on FGAC. And it could ensure to practice the web-based knowledge sharing system safely.

Vacuum annealing is an important part in rare metal tube production, accurate control of the annea ling temperature has enormous influence on the quality of tubes.According to the technological characteristics and temperature control requirements of the vacuum annealing furnace ,a high precision temperature control system was built based on IPC, intelligent temperature controller and thyratron transistor power-regulator.The neural network-PID strategy was proposed to control temperature online through OPC interface, which realized accurate control and automatic detection of the whole process of annealing temperature. Field data indicates that this system has realized the accurate control of the vacuum annealing temperature, effectively improves the quality of rare metal tubes and has extensive application value.

In this study, a fuzzy credibility constrained programming (FCCP) model is developed for agricultural irrigation systems management under uncertainty. It is then applied to a real case study in a depression at southern Urumqi, China. The optimization model can be adjusted according to various considerations from decision makers, and thus much optimal and applicable management strategies can be expected through identifying the most appropriate credibility level for the system.

This study aims to analyze the effect of Marr-Pirt model driven by white and integrated noises. The Gaussian white noise and integrated noises are generated using the Box-Muller algorithm. It is observed that noises could change the peak value and time of the model. In addition, integrated noises have more significant impact on the model than white noise when they are under the same intensity. This reveals integrated noises can better approximate to a practical stochastic process, and deserve substantial attention.

Long-term hydrocarbon micro-seepages develop diverse arrays of chemical and mineralogical changes in rocks and soils. We called this change mineral alteration. Mapping this mineral alteration is thus a potential tool for hydrocarbon exploration. The surface changes caused by hydrocarbon seepage can potentially be detected by remote sensing techniques. In this paper, we discussed some methods which can heighten the altered mineral on the map. The feature-oriented principal component selection (FPCS) and band ratio method collaborated together in extracting the abnormal area. SASI airborne hyperspectral data of Xifeng oilfield which located in southern Ordos Basin were used in this experiment . The experimental results show that the methods adopted in this paper have a good advantage of detecting surface anomalies and alternations associated with oil and gas information.

This paper figures out that during Qing ~Minguo, defensive settlements including Hakka enclosed dwelling and castle-type building were taken as the fundamental units, which plays an important role in Liuzhou urban morphological evolution. Compared with the instances in the different histories, this paper illustrates the derivative processes wherein the defensive type of architecture was gradually geared to the local culture and constructed requirement. According to the comparisons of space patterns, this paper comprehensively analyzed the urban architecture features of Liuzhou. This paper further explores some historical phenomena, taking watchtower as the basic code of typological selection which gained afresh its cultural connotations in different historical periods accordingly. Lastly it generalizes two internal principles on the derivative mechanism of the urban architecure in this period.

A coupler of single mode fiber with photonic crystal fiber with a coupling ratio of 0 to 90% was fabricated with a new method called Auto-deposition Fused Side-adhere. A model for coupler of side-polished single mode fiber with side-polished photonic crystal fiber was established which proves it feasible to make such a coupler practically. In the range of 1520~1620nm, the Wavelength Dependent Loss (WDL) of the through port was 0.3dB and of the coupled port was 5dB. The Polarization Dependent Loss of through port was 0.25dB and 0.31dB at 1310nm and 1550nm, and the WDL of coupled port was 1.46dB and 1.75dB. When temperature changed from 10°C to 80°C and humidity changed from 10% to 70%, coupling ratio changed about 7% to 16%. It can be concluded that a steady coupler of single mode fiber with photonic crystal fiber can be made with the Auto-deposition Fused Side-adhere Coupling method, which can give a reference method and lay an experimental foundation for the fabrication of photonic crystal fiber coupler.

Aim to a weapon platform get objects information in aspect of precision stroke beyond visual range, study on a novel method of antiterrorism sensor network. Raise formative network method based on control in order to settle for demands for antiterrorism sensor network. The network topology is distributed plane peer to peer self-organized structure. In the particular geography district, nodes carry on closed loop control, discover routing and maintain it according to the need that the delivering data packets and the state of their link. The simulation results show that the method has characteristic of none-center, self-organized, rapid dynamic which antiterrorism sensor network has. The novel method can be applied in execrably antiterrorism environment.

With the development of Internet technology and Cloud Computing, more and more applications have to be confronted with the challenges of big data. NoSQL Database is fit to the management of big data because of the characteristics of high scalability, high availability and high fault-tolerance. And it is one of the technologies of the management of big data. We will improve the performance of massive data processing of NoSQL Database through the large scale data parallel data processing and data localize of computing. So how to allocate the data will be a big challenge of NoSQL Database. In this paper we will propose a data allocation strategy based on the nodes load, which can adjust the data allocation strategy by the execute status of the system. And it can keep the balance of data allocation by a small cost. At last we will use some experiments to verify the effectiveness of the strategy which is proposed in this paper. The experiments show that it can improve the systems performance than other allocation strategy.

Direct Part Marking (DPM) is used for part identification and tracking. In order to avoid discrete information caused by quality data incompleteness or disorder in each stage of a product life cycle, especially for a large and complex product information, DPM is an effective method to ensure the security and traceability of the process quality status. Here describes a platform based on DPM data acquisition and quality assurance integration. The platform consists of data acquisition module and basic business functions; It builds semantic resource flexible service configuration framework, analyzes the discrete manufacturing resources meta-model relationship, defines semantic restful resource meta-model and uses the multi-view, multi-level, scalable manufacturing resource library. All of these are integrated in this platform. Through an experience of an enterprise, it is proved that the platform is feasible and configurable.

The short comings and limitations of traditional inspection method of sheet metal parts were described in this paper. Aiming at the inspection method based on the 3D models of sheet metal parts, the method of the inspection information extraction was introduced also. The actual shape of the sheet metal was obtained by the portable photoelectric equipments and then the 3D model was formed. The inspection information was extracted from the 3D model by the system which developed by VC++ tools on the CATIA platform. The characteristics of this method are high accuracy, environmental protection and high efficiency.

Various kinds of damage may occur during the drilling of carbon fiber reinforced polymer composite (CFRP). To review the mechanism of CFRP drilling, a three-dimensional macro-mechanical finite element (FE) model was constructed for CFRP drilling based on FE software tool Abaqus. The workpiece was modeled as equivalent homogenous anisotropic material (EHAM) with elastic-failure behavior. Three-dimensional Hashin criterion was used to predict the material failure. The material was implemented in user subroutine VUMAT. The drilling process was analyzed and the thrust force with respect to cutting conditions was evaluated. The simulation shows that thrust force increase with feed rates while decrease with spindle speed, as agrees with experiment.

By means of eccentric compressive tests of Concrete-filled Steel Tubular Columns, to research the mechanical properties and failure modes of Concrete-filled Steel Tubular Columns without yield point. Research shows that, the failure modes of axial compressive Concrete-filled Steel Tubular Columns without yield point, as well as axial compressive short columns, have the same trend of oblique shear failure.

Aiming at the short comings and limitations of traditional inspection method of sheet metal parts, the inspection solution based on the three dimensional model of sheet metal parts was described in this paper. According to the shape, size, accuracy requirements and so on, the system can give different inspection method. The inspection result will be achieved and the system can judge if the measured sheet metal part is qualified. The characteristics of this system are high accuracy, environmental protection and high efficiency.

Through a series of drainage analysis of plane strain compression tests on the Toyoura sand under different stress path, we found that the plastic shear strain and stress path of great relevance. But due to that a yield locus represents a specific yield level and usually do not related with stress paths, the hardening parameter of the parametric should also has nothing to do with the stress path. This article based on the analysis of the laboratory test results, put forward a stress path-independent plastic shear strain energy modified function as shear yield hardening parameters. Then based on the above type of energy state function proposed to build a sandy soil elasto-plastic constitutive model, and compared with corresponding numerical calculation results to make an effective verification.

In order to explore the energy saving measures in gibbsite crystallization process for alumina production by Bayer method, industrial experiment was carried out to investigate the solid dispersion in a slight agitation seed precipitation tank for gibbsite crystallization. The experimental results showed that little difference of solid concentration, only 48.19 g·l-1is found in the range from 5 meters depth to the tank bottom, which is the most zone of the tank, and there is a somewhat large difference in the top 5 meters zone near the surface that is about 149.66 g·l-1. Therefore, under the condition of slight agitation, solid content would not concentrate to the tank bottom completely with the normal work flow. It is suggested that the work of production would not be interrupted in less agitation than before, and the electrical energy saving rate is about 34%. The effects of reduced agitation on the yield and the quality of gibbsite crystallization should be studied carefully in subsequent works.

Altium Desinger summer 09 is a circuit board design software with more perfect software function, quick operation and strong rationality. To make the beginner grasp the PCB design process well, this paper will describe the whole process and analyze every step with a circuit example

In this paper, according to three major elements of road network "the collection of nodes, sections and the weight of road, established a combination model of static and dynamic of urban network based on graph theory. The model used the shortest travel time as the objective function for optimal path planning, focused on the analysis of link travel time, travel time is divided into free travel time of sections and intersection delay time to discuss and study. Finally, the Floyd algorithm was used to simulate this network model, in order to prove the effectiveness of the network model.

In order to explore the feasibility of remove agitation in gibbsite precipitation process, computational fluid dynamics method was carried out to study the flow field of sodium aluminate solution slurry in an unagitated precipitation tank. The solid content distribution is investigated by volume fraction of solid phase. The simulation results showed that little difference of solid content is found in the range between the tank bottom and the height position of 25 meters, which is the most zone of the tank, and there is a somewhat large difference in the top 5 meters zone, where the stratification occurs. With the inlet velocity increases, the zone of stratification shrinks to near the tank surface, which makes the solid content distribution in the whole tank seem uniform much more. Therefore, without agitation, the solid content would not concentrate to tank bottom completely in the normal work flow.

Based on the electrostatic comb drive structure, the comb will do relative motion when it is driven up, and the space between them will be less than 1μm. Considering the micro-scale effect, the Van der Waals force and the Casimir force is used to analyze the influence on the micro-structure, compared with the electrostatic force. The van der Waals force and the Casimir force is almost equivalent to the electrostatic force when the initial gap of the micro-structure and the relative displacement between the micro-structure is relatively small. Therefore the van der Waals force and the Casimir force play an important role in the micro-structure and cannot be ignored.

Because the development of ultra-low permeability reservoir is relative to fracture system, suitable well pattern arrangement is very significant for effective flooding management. There were three kinds of well pattern used to waterflood in Changqing oilfield: square inverted nine-spot, rhombus inverted nine-spot and rectangular five-spot pattern, according to the degree of fracture growth. In view of the defects of these well patterns in the development of ultra-low permeability reservoirs, a new well spacing concept is developed. Numerical simulations are carried out to illustrate the adaptability and strong points of this new well pattern. For this well pattern, on the one hand, the distance between producers and injectors along the fracture direction is widened and thus massive fracturing can be conducted to enhance oil productivity and water injection, and on the other hand, a high producer/injector ratio ensures high oil recovery rate in early stage. Besides, this new well pattern has a great ability of adjustment. Field application showed a remarkably well producing performance.

Ultra-low permeability rocks have plenty of microfractures. The stress-dependent permeability has a significant impact on the seepage. Previous studies are mainly on the permeability variation with stress in low permeability reservoir. But few are involved in ultralow permeability cores. In this paper, the experiment of stress sensitive ultralow permeability cores which are fabricated (both matrix cores and microfracture cores) is conducted. The experimental results shows that the permeability of microfracture low permeability cores which are fabricated increases greatly while the porosity of low permeability cores is little affected. This indicates that the fabricated microfracture cores are in line with that of the real situations of fracture media reservoir. By comparison, the permeability stress sensitive hysteresis degree of microfracture cores is not apparent and the permeability recovery degree is high in the unloading cycle. This study is of great benefit to reveals the stress sensitivity features of ultralow permeability reservoir

This paper presents results from a laboratory study comparing Klinkenberg-corrected permeability measurements and apparent permeability measurements in tight gas sands. We also investigated the effects of slippage on laboratory results and gas well production. Our study shows the permeability lose rate caused by the slippage effect and medium deformation is larger than that only caused by medium deformation, comparing the stress sensitivity experimental results. From results of hundreds of experiments, the relationship between slip factor and Klingenberg-corrected permeability was set up by regression, in addition, the theoretical type-curve depicting the effect of slippage on production was plotted with consideration of both permeability and pressure of gas reservoirs. This type-curve is valuable for engineering application to judge the effecting degree of slippage effect on production.

TiO2 nanotube arrays were made on the titanium foil by the method of anodic oxidation. Large-area crystallized free-standing TiO2 nanotube arrays were fabricated by a two-step anodization, and then crystallized by different heat-treatment processes. The morphology and structure of the TiO2 nanotube arrays were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The results show that the diameter of the TiO2 nanotube at the voltage range of 50V~65V was about 100nm. Anatase phase is the unique phase observed in free-standing TiO2 arrays annealed at the temperature of 400°C~610°C. However, crystallographic orientation of anatase phase is influenced by the annealing temperature.

China has large volumes of low-permeability reservoirs, distributed widely in the Ordos, Karamay and Songliao basins. In the recent decade, a new technology called advanced water injection (AWI), which is to inject water into formation to increase or maintain pressure for 3 to 6 months before oil production, has been applied to efficiently develop low-permeability reservoirs. This paper studies mechanisms and applications of AWI in China. Especially, its resent application in Xifeng oilfield has been described in detail. Most importantly, this paper proposes a simple equation to calculate optimal injected volume of water and pressure rise.

For the existed river channel terrain measurement method defects such as complex measurement process and high performance equipments requirement, in the paper a terrain measurement method based on binocular vision is proposed. Firstly, in proposed system binocular vision measurement parameters are calculated on the basis of monocular calibration; secondly, artificial signs are located in river channel and detected based on improved Harris corners detection algorithm; thirdly, the feature corners in binocular images are matched based on epipolar constraint and SIFT algorithm; finally, for corrected images feature corners location method is proposed, and the river channel terrain is measured. Experiments show that in the proposed method the river channel terrain can be measured accurately, and the method has good reference value to measure other irregular scenes.

Aiming at development and requirement of environmental monitoring, automatic weather station (AWS) must be more powerful and reliable. With distributed data acquisition nodes, new AWS extends and adds new sensors easily. Using protective power supply to each node, new system has high performance of lightning protection, which will not let system breakdown for any node crash. Three-stage automatic self-checking for node state is included, which makes failure diagnosis efficient. Data quality checking node is created in the new design. By databases and correlation models, it provides data self-checking functions for unattended AWS. Defects of old design such as fixed hardware configuration and centralized data acquisition are overcome. Flexibility and stability of AWS are improved, and data reliability of unattended AWS is improved.

Super-resolution image reconstruction has been one of the most active research fields in recent years. In this paper, a new super-resolution algorithm is proposed to the problem of obtaining a high-resolution image from several low- resolution images that have been sub sampled. In the image registration, the paper puts forward an improved search strategies improving registration accuracy. In the MAP algorithm, the threshold parameters of solving the optimal value, making the estimated value of the optimal high-resolution images, so that the reconstructed image is better. The results of the experiments indicate that the proposed algorithm can not only make an automatic choice of the parameter and get the high resolution reconstruction image expected, but also can preserve the edges and details of the image effectively.

The traditional acoustic source is sensitive to time. A novel sound source location method using linear intersection spacing multi-sensors array is provided in this paper. Each array is composed of three spaced nodes, and least squares method is used to calculate the final position according to ternary array results. Multi-arrays method is more robust than the ternary one, and much wider scope is covered. Location scope extends from 120m to 800m when the relative positioning error is 10%. A multi-array group based on linear intersection sound source localization method is provided in this paper too. Experiment results show that the proposed method has higher precision on angle locating than distance locating.

Considering the conventional products development is a sequential process, many assembly problems can be fully exposed only when the actual produced products are during the process of assembling; the immersive virtual assembly of man-in-the-loop is proposed. The principle of this VA is put forward firstly. the environment, key techniques and application of virtual assembly are researched. Based on the Catia V5 and virtools, a prototype system of virtual assembly is built and validated. The result indicates that this system is able to apply to engineering.

Base on 8 column test data obtained under low cyclic loading test, our study group conducted a comparative study of the four categories of damage index models. Different damage index models were used to calculate the damage index of the same column, and calculation results show that the different models give quite different result on the same column damage, and corresponding conclusions of the study are presented on this basis.

“Living museum” is a theory and method in the protection and renewal of historical districts. It is based on the eco-museum theory and the characteristics of China. It can also be seen as a new museum mode. “Living museum” emphasizes three characteristics, which include: the authenticity protection of spatial element in the traditional architecture culture, identity and inheritance of traditional architecture culture, community participation and interaction with visitors. The essence of “Living museum” is community renewal. Following the principle of people-oriented, the theory pays attention to retain the traditional culture of architecture development trends and will make the traditional architectural protection a constantly updated and developing process.

The environment capacity is not only importance to maintain the balance of nature, but also influence the socio-economic development well being in grassland regions. Take the case of Damao County in Baotou City Inner Mongolia located on the arid and semi-arid area in northern China and a fragile ecosystem, indicators system of grassland environment capacity are constructed and then analyzed the grassland environment capacity quantitatively. The result shows that the grassland environment capacity is an allowable state in 1992 and 2000, but it is an overloading state in 2009, so natural resources on the grassland has not support the demand of regional economic and social development based mainly on animal husbandry in Damao County, applying some effective measures to protect grassland and maintain ecosystem stability.

A variety of conventional weapons equipped with explosive are used to destroy the significant long-span arch bridge. Because of the special function of the weapons and the complexity of the arch bridge, the damage results with the features of uncertainty and fuzzy are assessed with fuzzy theory. Combined with the standards for technical condition evaluation of highway bridges and wartime specific requirements, the fuzzy mathematical model based on the fuzzy mathematics theory and method is established to judgment comprehensively the arch technical condition. The hirarchy fuzzy comprehensive evaluation method is applied to determine the technical state grade of the damaged arch bridge. The method of damage evaluation provides the effective reference for the emergency repairmen of the arch bridges.

The mixture proportion of recycled concrete was discussed by orthogonal design method. The influence of water-cement ratio, recycled aggregate quantity on workability, cube compressive strength of recycled concrete was analyzed. The experimental results indicated that，Recycled concrete mix proportion design should consider the impact of the water absorption of recycled aggregate. Unit water amount of recycled concrete should be plain concrete unit water consumption and recycled aggregate additional amount of water. Sand ratio should increase in the corresponding ordinary aggregate concrete sand ratio on the basis of 1 to 3 percent. When the water-cement ratio is 0.36 and construction waste content of 40% slag content of 20%, 28d compressive strength of concrete is 48.1MPa, slightly higher than the reference concrete (48.0MPa).

In order to treat efficiently with the soft multi-layers in the middle of ground, the improved cement-soil double mixed pile is developed and the pile diameter is enlarged in the soft soil layer depth to form the cement-soil mixed column with bearing load plate. The installation mechanism, deep mixing machine, and pile installation procedure of the soil-cement mixed pile with bearing plate is presented. The field test results show that the cement-soil mixing pile with bearing load plate construction technology can ensure the cement mix content and mixing uniformity. The pile strength is greatly higher than conventional cement-soil pile, so it can be used to improved soft multi-layered ground economically and effectively, and it has a good potential application for practice.

The microcellular foaming PP/GF composites was made under the condition of twice-open mold by using chemical foaming injection method, according to glass fiber reinforced mechanism, the effect rule of GF on mechanics properties was studied in microcellular foam PP composites. The results showed that tensile and impact strength of Micro-foam PP/GF composites by one-step method were higher than that of micro-foam PP/GF composites by two-step method, when the content of GF is 30%, the tensile and impact strength of micro-foam PP/GF composites by one-step method can reach 55.72MPa and 7.5kJ/m2respectively，one-step method can get higher strength and higher toughness micro-foam PP/GF composites.

Dynamic atomization processes of non-Newtonian liquid were investigated by the method of numerical simulation. The full transient process of the primary instability, deformation, and fragmentation of free surface were simulated numerically by solving the Navier-Stokes equations using an algorithm based on the finite volume method. The tracking of the free surface was achieved using the volume of fluid (VOF) technique and the geometric reconstruction was based on the technique of Piecewise-Linear Interface Construction (PLIC). The continuum surface force (CSF) method was used to model surface tension. In this paper, atomization characteristics of non-Newtonian liquid were analyzed detailedly. The distribution of dimensionless potential length against time was obtained, and the dimensionless wavelength of primary waves was investigated.

The hydraulic long-straight pipeline system of the shield machine is to be studied in this paper. Modal parameters of the hydraulic long-straight pipeline whose length is 8m under three kinds of spans (single span, double spans and four spans) were measured and analyzed. Considering the inherent vibration characteristics of the shield machine, we limited the natural frequency of the multi-span long straight pipeline studied within the range of 0~ 200Hz.What the experiment shows is as follows: Firstly, the natural frequency of the hydraulic long-straight pipeline is densely distributed mainly in the low frequency; Secondly, the natural frequencies of vibration in the horizontal plane are slightly higher than those of corresponding orders in the vertical plane, although the difference is little; In addition, by increasing the number of supports, pipeline span can be reduced and the natural frequencies of pipeline can be significantly increased, but this will make the vibration mode change irregularly.

Since the beginning of the 21st century, large-scale extensive expansion of suburb new campus construction has been a kind of abnormal phenomenon in the process of the rapid development of modern higher education. Along with the implementation of land macro-control policies, the old campus space renovation will be the significant direction in campus construction. The complex natural environment and more limited land resources are key factors in mountainous old campus space renovation. Taking Chongqing University as the example, the paper analyzes the relationship of symbiosis, coexistence, mutual prosperity between mankind and the elements in particular mountainous environment. Starting from the whole and harmony, we try to discuss the adaption of mountainous old campus to natural environment, built environment and cultural environment by adopting adaptive methods, so as to maintain its regional character, and guide mountainous campus construction to overcome the environmental bottle-neck. Based on own advantages, the mountainous old campus will develop to be a high efficient, compact and open ecological adaptive campus by continuous effective renovation.

The enclosure pile is extensively used as retaining structure in the foundation pit excavation. And it is always combined with other reinforcement measures. So it is unreasonable to a certain degree that the enclosure pile is analyzed as cantilever structure. Taken the deep foundation pit of a subway station in Hefei for instance, the effect of other reinforcement measures on restrained conditions of enclosure piles in the paper was taken into account. And the behavior of enclosure pile under various restrained conditions was analyzed. Based on that, some helpful suggestions for practical retaining structure of foundation pit were put forward.

Due to the complexity and variability of unsaturated soil, the permeability property of unsaturated soils is clearly different from that of saturated soil. And because the test equipment is more complex and technical requirements are higher and diachronic cycle is longer, the researches related are slow. Using the triaxial apparatus of unsaturated soil, the direct and indirect experiments to study the permeability coefficient of unsaturated silty clay are done. Test results show that the permeability coefficient of unsaturated soil can be done by the indirect method and direct method. Not only the direct measurements of the permeability coefficient of unsaturated soil are realized through this trial, but also the reliability of indirect method is proved.

In competitive and uncertain global business environment, manufacturing enterprises must frequently expand manufacturing capacity to respond effectively and quickly to satisfy customer needs. Outsourcing manufacturing through subcontract is an effective approach for this purpose. This paper presents a process collaboration oriented outsourcing manufacturing execution framework, which integrates the functions of manufacturing execution system (MES)inside enterprise and collaborative manufacturing system across enterprises. With the collaborative working environment based on multi agent system, the framework can support enterprises to establish optimum production schedule with due date constraint, construct virtual enterprise by outsourcing tasks to partner enterprises, and utilize internal and external resources to conduct manufacturing activities with the coordination of workflow system, so as to expand the production capacity and reduce the time to market. A prototype system is implemented and demonstrated with a case study. Introduction

When a digital watermark is directly embedded into low frequency part of audio, sensitive noises maybe occur. In the paper, a method of audio digital watermark based on quantization index modulation is proposed to solve the problem. At first, audio signal is divided to fragment by audio mask effect. Then low frequency part of discrete wavelet transform (DWT) is extracted. Scrambling watermark is embedded into the low frequency part by quantization index modulation (QIM). The experiment results show that the presented method has a good capacity to fight many attacks.

With the rapid development of autonomous underwater vehicles, image produced from sidescan sonar mounted on these vehicles has attracted more and more attention. Many general super resolution approaches can not get satisfied results after applying to sidescan sonar image for its low levels of contrast. Compressive sensing theory suggested that high resolution image can be recovered from low resolution image with sparse representation. After training two dictionaries for high resolution and low resolution image patches, the sparse representation of given low resolution image can be applied to the dictionary of high resolution patch to get super resolution result image. Sparse representation based image super resolution approach applied to sidescan sonar image is discussed.

It is feasible for the inverse problem of research in the very vital significance between in practical application. Genetic algorithm is applied in many aspects, but we are more concerned with the application in mathematics. From the start of genetic algorithm, the collection to search for comprehensive coverage of preferred. Due to genetic algorithm is used to search the information, and does not need such problems with the problem is directly related to the derivative of the information. Finally, the results of numerical simulation show that the GA method has high accuracy and quick convergent speed. And it is easy to program and calculate. It is worth of practical application.