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Informal learning is an important part of active learning in higher education. It is of great significance to create a good informal learning space for higher education. However, the current design of university buildings is lack of quality informal learning space. This paper analyzes the relationship between complex network analysis and student behavior, and finds that there exists a close relationship between them. The spatial structure has the essential impact on the distribution of the informal learning. The construction of streamline system places an important role in the formation of learning space network. The density of the network relationship is not a key factor, but the relationship model presents more important. The cohesion of network plays an important role in the formation of spatial network of learning. In the network structure, since the groups with cohesion power are capable to convey the information even faster, the regeneration inside the groups can be achieved through the flow of resource/information.

As the most widespread applied structure model since Modernism, Dom-ino Structure is rooted deeply in the sub-conscious of many architects, which in some sense constrains their ability to shape it. Transformation strategies for Dom-ino Structure try to change a hard, homogeneous and rigid model into a soft, flexible, and changeable form. By analyzing the inner property of Dom-ino Structure, this article firstly specifies the orientation of probable transformations. Then, after categorizing cases with integrated architectural form and structure, this article describes three ways of transforming of Dom-ino Structure, including material replacement, geomorphing and mechanics remodeling. These three ways are mutually dependent with a prolongable method system for the innovation of architectural and structural form. This research on the transformation of an existing structural model, presented from the architect’s point of view, is based on Morphological perspective. This research could facilitate the integration of architecture and structure, clarify the inner relations between different structural types, improve the weaknesses of existing structure model while expanding the diversity of architecture forms. It also gives a significant picture of how inspiring the process of collaboration between the architect and the engineer can be.

High quality (200) and (111) orientations cubic MgZnO thin films were made on (200) and (111) orientations MgO substrates separately under different condition with higher and lower migration energy of reactive atoms separately. The crystal quality of (111) orientation MgZnO thin film is higher than (200) one because of the stronger horizontal migration of atoms on (111) surface under high temperature condition, the surface of (200) orientation MgZnO thin film is smoother than (111) orientation one because of lower vertical growth speed of (200) MgZnO grains. The band gap of (111) orientation MgZnO thin film is smaller than (200) one because of more Zn atoms in (111) orientation MgZnO lattice than that in (200) ones. This paper gives an effective method to improve crystal quality of different orientation MgZnO thin film under different condition, which is meaningful in application of cubic MgZnO in different areas.

Web service based information integration scenario can achieve the functional integration of heterogeneous platforms. However, the information sharing also requires the integration of Web services data. Based on the analysis of the characteristics of XML, this paper studies the web service data quadratic processing of heterogeneous platform. It realizes the data integration based on the functional integration of heterogeneous platforms. All the data of web services are defined and described by XML Schema. So this study uses XML data binding technology to achieve the conversion of XML Schema data to relational database content objects. Then XML mapping technology is adapted to achieve the mapping of the database content object on the local specific database table. Local system can achieve the quadratic web service data processing based on the database table’s normal operation. Some applications are described to validate.

The new duster is used to remove the coal dust from the coal conveying system of thermal power plant. Many of plastic globules are filled into the duster. The water is sprayed from the upper of duster. The airflow of containing coal dust flows through the filler from bottom to top, and change to clean air. The application of the turbulent duster in the coal conveying system of the thermal power plant shows: the efficiency of dust collection is 99%. In particular, it can remove 67% of coal dust smaller than 5 microns. The duster adopts fully automatic control technology. The amount of water consumed is very low. It can be effectively used for coal conveying system of thermal power plant. After air purification with coal dust, the air quality meets the requirements of the health standard.

Codeine (3-methylmorphine) is an opiate that is widely used to treat mild or moderate pain and cough suppression. It is the second predominant alkaloid in opium with a mild sedative effect. In the present study, we describe an electrochemical sensor for codeine detection by using the DNA aptamers against codeine. In the sensing protocol, a dually-labeled DNA aptamer probe was designed to be labeled at one end with HS, and at its another end with dabcyl as an electrochemical tag to produce electrochemical signal via recognization occurrence. One special electrochemical marker was prepared by modifying ZnS nanoparticle with-cyclodextrins (ab. ZnS-CDs), which employed as electrochemical signal provider and would conjunct with the codeine probe modified electrode through the host–guest recognition of CDs to dabcyl. With codeine adding, aptamer folding allows the ZnS-CDs into soultion that caused an increase of current signal. This sensor has the ability to detect 37pM codeine. Our study demonstrates that the biosensor has good specificity and stability. It can be used to detect codeine.

A numerical simulation research was carried out on vortex and sound pressure level of the butterfly valve in the flow process based on FLUENT, which analyzed the variation of the vorticity and sound pressure level at different opening angles. There was an inverse pressure gradient in the orifice formed by the butterfly plate and pipe, which caused partial particle reflux on the back of butterfly plate in flowing, thus formed the vortex. The vortex formed on the back of the butterfly plate was decreased gradually, with the increasing opening angle of the valve in opening process. The noise was generated by the vortex separated and rupture in flowing. And the sound pressure level on the back of butterfly plate was decreased with the increasing opening angle. At the same time, the vorticity and the maximum sound pressure level position moved from the center to the rotation center of butterfly plate in opening process. The expanding orifice formed by butterfly plate upstream and the pipe and the tapered orifice formed by butterfly plate downstream and the pipe had the different throttling action to the fluid, which made the sound pressure level of upstream was higher than that of downstream in symmetrical position. The vortex generated by the separation of boundary layer would cause vortex excited vibration between plate and fluid, and then resonance occurred. The studies were carried out in the vorticity and the sound pressure level on the downstream of butterfly plate, and the changing law of those was found. It would provide a basis theory for reducing noise and avoiding vortex vibration of butterfly valve.

Multilayer cutting is widely used in finish machining process of thin-walled parts to improve the machining precision. The paper presents a cutting allowance optimization method using genetic algorithm to improve the machining quality and efficiency of thin-walled parts in the field of aerospace. Considering the coupling relationship of the deformation between the layers in layered milling, the parameterized finite element model of thin-walled parts in side milling process is established. The best relationship between the workpiece stiffness and the cutting force is determined though iterative calculations, and the deformation caused by the cutting force can be minimized. The results show that the optimized distribution of the depth of finishing cutting was better than the experience. The method proposed in this paper can reduce the deformation of the workpiece during the machining process, and thus improve the machining accuracy.

In order to solve the problem of openness, intelligence and low integration in the current machining robot control system, STEP-NC standard is introduced into the field of robot machining, and defines the STEP-NC data model of industrial robots. The 6R industrial robots are used to build the machining platform and the connection between the machining robot and the CAD / CAM system and the integrated data stream structure are discussed. The key issues involved in the post processing of the machining robot are studied. Taking the 6R robot as an example, the robot prototype system is established, and the kinematics solution in the post-processing process is studied and deduced. The cutting and post-processing system platform of cutting robot was established and the sample art machining was completed. The experimental and simulation results show that the system can complete the machining process of the cutting robot and generate executable robot machining instructions.

Spatial-carrier digital speckle pattern interferometry (SC-DSPI) has proven to be a competitive tool for full-field deformation measurement. Comparing with traditional phase-shifting digital speckle pattern interferometry, SC-DSPI has the advantage of rapid measurement which guarantees that dynamic deformations can be precisely measured. In this article, a tri-channel SC-DSPI that measures three-dimensional deformations synchronously is introduced. Measuring algorithm as well as optical arrangement is described in detail. Experiments are carried out to verify the validity and evaluate the performance of the proposed technique.

The electric breakdown voltage (Vbd) is a fundamental performance index for insulation thin film in MEMS, and plays a dominant role for the operation reliability of this kind of devices. In this work, positive polyimide (PI) photoresist was used to prepare thin films by spin-coating and thermal imidization. Electric breakdown experiments were carried out under DC voltage mode. The effect of imidization temperature on Vbd was also studied by setting three different imidization temperature profiles. XRD was applied to test the composition and microstructure of the PI thin films. Results show that the imidization degree of the PI thin film will be increased with the raising of the imidization temperature from 280 to 350°C. This means that a more completed imidization process can be achieved in the PI thin film by using higher imidization temperature. The highest Vbd of about 2740V and an average Vbd of 343kV/mm can be achieved on a 8.5μm thick PI thin film imidized at 350°C.

A novel A/B bi-rotary head is designed which can be used on five-axis machine centers. The motion of pitching and swing can be achieved by controlling the output angle and velocity of motors. Anti-backlash control method can be applied to eliminate the transmission backlash. The error sensitivity model is also established using matrix differential method, and the influence of internal errors on the integrated errors is obtained. The results show that the more sensitive errors can be identified from all errors which need to be controlled rationally.

In this paper, ANSYS-LSDYNA is used to establish the numerical simulation model of the blocked collision and the blocked hazard is analyzed in the process of putting the oil perforating string into downhole. According to the analysis results, the anti-blocked safety firing head is designed and the key technology is carried on the structure design and the experimental study [1]. The field application proved that this technology can effectively eliminate the potential hazards of mistaken perforating caused by sliding, falling objects, etc. It’s safety, reliable, and low cost.

Al2O3-Fe based metal ceramic is a functional ceramic material prepared by high temperature sintering with Al2O3 as the main component, plus iron powder (binder phase) and other additives. In this paper, the composition design of Al2O3-Fe based metal ceramic was made, and the performance of the material was tested and studied. The change of the content of iron powder also has a great influence on the compressive strength and bending strength of the Al2O3 metal ceramic. Experiments also show that the Al2O3-Fe-based cermet has good corrosion resistance. Finally, the following conclusions were obtained through the comprehensive analysis: the best test formula is No.4 sample, and its compressive strength is 79.79MPa, bending strength is 15.90 MPa, corrosion resistance rate is 0.028 g/dm2·h.

Permanent mold cast (PMC) AJ62 magnesium alloy exhibits a fine-grained microstructure in the thin section and a coarse-grained microstructure in the thick section. Microstructure of the PMC AJ 62 alloy was analyzed by using the Scanning Electron Microscopy (SEM). Potentiodynamic polarization experiments were performed to investigate the corrosion resistances of the PMC AJ62 alloys in salt solutions and engine coolant. The corrosion behaviors in the fine- and coarse-grained AJ62 alloys were compared. The results show that the AJ62 alloy with fine microstructure presents enhanced corrosion resistance.

This test uses polycarboxylate superplasticizer by adding 15% quantitative fly ash, 10%, 15%, 20% of slag, and 5%,7.5%, 10% of silica fume of the total amount of the cementitious material to be an equivalent replacement for cement. Ordinary materials were used to make the C70 high strength self-compacting concrete. The concrete slump, expansion degree, and the axial compressive strength of concrete were studied. Through testing, the mix proportion of each group of concrete slump was determined to be above 250mm. And the expansion degree to be above 550mm. The axial compressive strength satisfied the design strength value. At the same time, the optimal mix ratio was proposed. And the economic performance of each group was analyzed. There are references for a similar experimental design and engineering application.

Fault location is an effective way to ensure quickly power recovery after a failure in power distribution system. Bad operation environment of FTU, damaged elements or lost information usually cause variations in fault information for correlation analysis in fault location of power distribution system. A data mining (DM) correlation analysis model based on rough sets (RS) theory and immune algorithm (IA) is proposed in this paper. Firstly, using RS theory to extract domain knowledge, a set of the given variant fault pattern is converted into a decision table in RS. Secondly, an attribute reduction of the decision table is made by using the IA theory, and the intrinsic correlation rules between input vector (condition attribute) and output vector (decision attribute) are mined. Then, the data mining method is used to deal with the distortion of FTU real-time input information. According to the current limit information sequence of section switches, line fault states in each section are judged to realize the fault location in power distribution network. Finally, the feasibility and effectiveness of the fault location model of distribution network based on RS-IA data mining model is verified by simulation.

By using different annealing processes to anneal the pressure-measuring cylindrical copper cylinder, playing some static experiments on different copper cylinders, the difference of pressure measuring performance of copper cylinder was analyzed. Results show that, by using current annealing processes all can achieve the purpose of full softening the material of the copper cylinder and the deformation of copper is not significantly affected by the different temperatures. Some copper cylinders which use short holding time have poor linear sensitivity, but their measurement deviation is better than those which use longer holding time. So, in the actual production of copper, we should use shorter annealing time to improve their measuring accuracy.

This study aims to find out the optimum extraction time varied from 5 min to 60 min for extracellular polymeric substances (EPS) from sewage sludge pretreated at 80 °C. The change of the contents of EPS and its components under different time limit were recorded and compared. The results showed: the contents of soluble protein, TOC, soluble sugar and DNA was increased by 579.17 mg/l, 514.25 mg/l, 132.79 mg/l, and 34.69 mg/l, respectively, with the increase of thermal pre-treatment time during the process, and the DNA content increased the least, which indicating that the effect of thermal pre-treatment at 80 °C on cell lysis of sewage sludge was small. The EPS content, as a whole, was increased with the increase of thermal pre-treatment time. By analyzing the experimental data with the Analytic Hierarchy Process Model, which was used to identify the optimum thermal pre-treatment time of extracting EPS, the results showed that the effectiveness of EPS extraction from sludges was 30 min>60 min>50 min>20 min>40 min>10 min>5 min. Therefore, the 30 min was choosed as the optimum thermal pre-treatment time.

This work demonstrates a simple method to improve the conductivity of flexography printed silver pattern by water washing. The flexography printed silver pattern was firstly dried in an oven under 120 celsius degree, then was placed into the deionized water. Heating post-treatment is used to enhance adhesion between the printed silver layer and the substrate film to prevent the detachment of the silver pattern during water washing. The method is compatible with the PET substrate and printed fine pattern of square and hexagon in room temperature. After 2 hour immersion in water under magnetic stirring, the printed silver pattern of square and hexagon show different conductive improvement of conductivity. The silver pattern of hexagon shape with water washing exhibits much better conductivity than the one wiped by lens wipe paper, as measured by using a multimeter. The confocal laser scanning microscope (CLSM) shows that the morphology of the two shapes of silver pattern was almost no changed, except a little decrease on the thickness of the silver layer.

The preparation method of conductive ink is introduced, with silver acetate as the precursor and dodecylamine (DDA) as the protective agent. The sheet resistance of the sintered conductive pattern varies at different temperature and it is lower than 1 Ω / □ when the sintering temperature is higher than 130℃. Three different methods of blade-coating, spin-coating, ink-jet printing are used to fabricate the electrodes of solar cells. It is found that the morphology of the electrode made by Ink-jet printing is the most regular and uniform. The power conversion efficiency of the best fabricated solar cell is 0.09%.

Being sustainable development of construction,is an important issue which architecture design is facing. This paper will discuss aspects from importance of sustainable architectural design, sustainable building theory, design concept and method, concludes that only a balanced architecture and nature of the ecological environment relationaship, can lead to turely sustainable construction.

An industry trial high strength low alloying auto steel was undergone simulated continuous galvanealing processed. The research results show that, good surface and mechanical properties of matrix for the following galvanealing process were achieved by controlling the steel making, final and coiling temperature of hot rolling in minor fluctuation. When the experimental steels were galvanealed at 520°C and 20s in simulation, more plastic ζ phase, less brittle δ phase in the coating guaranteed good powdering resistance performance.

In the process of shell design of a 100kW single screw expander, the fundamental research on the screw chamber walls thickness is still lacking. Thin wall may cause deformation and the damage possibility of the inlet passage. Thick wall will increase the weight of the expander and led to assembly problem and transportation inconvenience. In this paper, static finite element analysis on cast shell of the 100 kW single screw expander was carried out. By calculating stress distribution and deformation of the expander shell under 1.5 times of the design pressure, the authors find the thickness of gate rotor chamber walls and inlet passage walls as 15 mm is acceptable, but the thickness of screw chamber walls should be at least 35 mm.

In the word of service-oriented architecture and collaboration, it is important to deal with sub-services of cooperating components. In existing research, functions to meet and behavior predictability are two major aspects of Web services composition, but there are some limitations to treatment of behavioral constraints. Based on an open fuzzy Petri net, by using action patterns of behavioral profile, the paper analyzes behavior constraint under the condition that subnets composition are satisfied, puts forward a kind of method of deciding the composability of the subnets. Finally, the theoretical analysis and simulation results show the effectiveness of the method.

For the complexity and nonlinearity of the input characteristics in network intrusion detection system, a feature extraction method for network intrusion detection based on RS-KPCA is studied. Firstly, the Rough Set (RS) theory is used to select the valuable features, while the unnecessary features are removed. Then, the features of the intrusion detection sample data are extracted by the kernel principal component analysis (KPCA) algorithm. The number of new features is determined by the cumulative contribution rate. Simulation results show that this method can effectively remove the interference features, and has the advantages of obvious principal component feature and concentrated contribution rate, compared with PCA. Overall, the proposed method can effectively integrate the nonlinear features of the original data, reduce the dimension, and improve the intrusion detection performance.

Internet technology with the computer technology as the carrier is the extension and expansion of human brain function, and the results of the development of society informatization. The application of Internet technology is the need of the development of times in teaching management. Firstly, we analyze the advantages of the integration of modern information technology with English teaching. According to the characteristics of the fusion of the two, we construct the English multimedia network teaching platform based on the information and Internet technology. Then we analyze the key technology of the audio interaction based on this platform, and data envelopment analysis model has been used to make analysis of English audio. In order to verify the scientificity of English audio test based on this platform, we construct the simulation model by using LABVIEW, and the simulation results show that this platform can accurately reflect the comparing effects of the entire audio , which has strong practicability.

It is a key technology that extract and segment book call number from books’ backbone images for book retrieval and return robot to take an operation of sending and withdrawing books to or from the shelves of library. This paper presents an image extraction and segmentation method using color feature and edge information to segment adjacent book call number with similar background. Take thick, thicker, medium thick, thin, little thin and hybrid books’ backbone images as experiment samples, and the results show that this method effectively extracts and segments adjacent book call number. The segmentation approach provides a technical support for book retrieval and return robot to carry out automatic books’ retrieval and return operation.

This paper elaborates the necessary part of kansei engineering in costume innovative design ,with the analysis of kansei engineering. It proposes the frame of costume innovative design based on kansei engineering, helps designers discover the interest of customers in costume products, and elaborates the relationship between the establishment of kansei and elements of costume design which provides evidence for guidance of costume innovation and evaluation of design effect. In the end, this paper points out that kansei engineering has a broad prospect applies in costume design to better satisfy the kansei requirement of users.

Fine arts, in recent years, with the rapid development of information technology, its diverse artistic expression trends to be more obvious, at the same time, the artistic expression based on multimedia has been paid more attention by the fields. This paper firstly analyzes the general characteristics of art image fusion process in multimedia environment. On this basis, the digital-to-analog conversion (DAC) method of multimedia artistic expression is proposed, which takes the Gauss Pyramid as basis. In order to verify the scientificity of this method, this paper adopts the empirical method to carry on the empirical analysis. The results show that multimedia artistic expression behavior of fine arts based on this method is significant, and has strong practicability and operability.

In this paper, we researched the analysis methods of composite structure from a quantitative point of view. Based on reasonable assumptions, the research contents of the upper and lower repair tolerance were pointed. It was proposed that the remaining strength of damaged structural components should be used as the parameter index to analyze the lower repair tolerance, meanwhile calculating the parameter via the model of stress and interference. We could then confirm the conclusion by contrasting the references. To analyze the upper repair tolerance, we considered mainly technical level and economical efficiency, from which the upper limit could be ascertained.

An intrusion detection method based on RS-LSSVM is studied in this paper. Firstly, attribute reduction algorithm based on the generalized decision table is proposed to remove the interference features and reduce the dimension of input feature space. Then the classification method based on least square support vector machine (LSSVM) is analyzed. The sample data after dimension reduction is used for LSSVM training, and the LSSVM classification model is obtained, which forms the ability of detecting unknown intrusion. Simulation results show that the proposed method can effectively remove the unnecessary features and improve the performance of network intrusion detection.

Sideslip angle and yaw rate can reflect the essential characteristics of the vehicle steering motion in steer by wire system, and determine the stability of the vehicle, sideslip angle is generally obtained through observation. In order to enhance the stability of the vehicle, hybrid observation method for side slip angle is used, in which dynamic integration is mainly used when the raw rate is relatively small, and extended kalman filtering is mainly used when the raw rate is large. In the observer design, the value and change rate of raw rate is used to calculate a weight coefficient to determine the proportion of two observation method in the observer. The simulation results show that the method can efficiently decrease the observation error of the side slip and improve the observation accuracy.

A kind of ionization gas sensor based on the polarization structure was designed and manufactured by MEMS technology. The gas sensor device consists of 3 main parts: the anode electrode, the cathode and the distributed polarization structure array which lie between the former two parts. All parts were coated with ZnO nanorods by a two-step hydrothermal method. Different concentration acetone gas was tested using the device. The results support that the ionization gas sensors exhibit reasonable sensitivity and good repeatability at the applied voltages lower than 4V.

Heat shock protein 72 (HSP72) is highly expressed in cancer tissues. Recent studies indicate the possible roles of HSP72 in the development and progression of hepatocellular carcinomas but detailed information is still ambiguous. The aim of the study is to investigate the correlation between clinicopathology and immunolocalization of HSP72 in human hepatocellular carcinoma. Immunohistochemistry demonstrated that HSP72 expression in hepatocellular carcinomas with metastasis was significantly higher than those with non-metastasis. HSP72 expression was significantly associated with the presence of tumor infiltration, lymph node and remote metastasis.

Experiments on U75V rail steel were carried out to investigate the cyclic feature, ratcheting behavior and low-cycle fatigue under both strain- and stress-controlled loadings at room temperature. It was found that U75V rail steel shows strain amplitude dependent cyclic softening feature, i.e., the responded stress amplitude under strain-controlled decreases with the increasing number of cycles and reaches a stable value after about 20th cycle. Ratcheting strain increases with an increasing stress amplitude and mean stress, except for stress ratio, and the ratcheting strain in failure also increases with an increasing stress amplitude, mean stress and stress ratio. The low-cycle fatigue lives under cyclic straining decrease linearly with an increasing strain amplitude, the fatigue lives under cyclic stressing decrease with an increasing mean stress except for zero mean stress, and decrease with an increasing stress amplitude. Ratcheting behavior with a high mean stress reduces fatigue life of rail steel by comparing fatigue lives under stress cycling with those under strain cycling. Research findings are helpful to evaluate fatigue life of U75V rail steel in the railways with passenger and freight traffic.

547 pipelines of SAN equipment of Ningbo X enterprise were independent evaluated by RBI technology using DNV`S Orbit Onshore software and method, and Lloyd's RBMI software and method.The probability offailure and failure consequence of pipeline were quantitative calculated by RBI technology and ultimately determined the risk matrix. From assumed condition set, damage modes analysis, failure probability and consequence,circuit divisionand risk matrix, the two RBI methods were comparative studied. Similarities and differences of two RBI methods were analyzed and optimalrisk matrixordering was get. It can provide scientific basis for the enterprise to carry out the risk-based inspection and not only improve the reliability of equipment but also reduce the cost.