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With the gradual expansion of China's electrical network construction, network scale and transmission capacity, a reasonable electrical network construction scale research is urgent for the optimized power system development. In this paper, a blackout risk assessment index system as well as the risk calculation model under different electrical network scales is established, followed by a series of blackout risk value calculation of constitutive units in an IEEE-14 node standard system under typical patterns, hence the validity of the model is verified via comparison with the actual blackout risk value of the system. The result indicates that that the ranking of blackout risk values under different connection patterns with the same amount of lines is polygon, quadrilateral and triangle.

The disadvantage of Beijing-Tianjin-Tangshan power grid operation control mode is that the control effect is poorer and the spare capacity demand is big, this paper puts forward a new coordinated control strategy. First of all, this paper describes the relationship between the load, frequency, the output of generating unit, the tie line power and the area control error relationship of the whole power grid, according to the regional automatic generation control performance assessment criteria, concludes the characteristics of regional unit adjustment. This paper analyzes the contradiction between them, and then proposes a coordinated control strategy between the Beijing-Tangshan power grid and Tianjin power grid. The case simulation results prove the superiority and feasibility of the new coordinated control strategy. Compared with the original, the new strategy reduces the volatility of the unit, shortens the recovery time of frequency, and has a certain practical significance.

Magnetic memory signals and hardness of 35CrMo tempered and quenched steel were acquired during tensile testing. The magnetic signals of 35CrMo steel increased monotonously with the increase of tensile stress before yielding, followed by sudden decrease with further increase of stress after yielding. The zero-cross point ofHp(y) varied during tensile testing, indicating varied position of stress concentration zones with the process of tensile testing. Vickers hardness of the stress concentration zones of 35CrMo steel was lower than that around it, which may be attributed to the residual stress. The relationship between zero-cross point ofHp(y) and Vickers hardness was considered.

The upper and lower courses of sea oil and gas exploitationare connected by submarine pipeline which is called life line project. Free span often occurs because of the unevenness and scour of seabed, and fatigue is one of the main failure modes.In this paper, with the finite element numerical simulation method, based on the harmonic response analysis, the research on the structural response of free span under the vibration induced by vortex was investigated, and the effect of the factors such as flow velocity, length of free span. According to the analysis results,the fatigue life of free span was evaluated.

The creep behavior of 2.25Cr-1Mo-0.25V ferritic steel was investigated using a set of physically-based creep damage constitutive equations. The material constants were determined according to the creep experimental data, using an efficient genetic algorithm. The user-defined subroutine for creep damage evolution was developed based on the commercial finite element software ANSYS and its user programmable features (UPFs), and the numerical simulation of the stress distribution and the damage evolution of the semi V-type notched specimen during creep were studied. The results showed that the genetic algorithm is a very efficient optimization approach for the parameter identification of the creep damage constitutive equations, and finite element simulation based on continuum damage mechanics can be used to analyze and predict the creep damage evolution under multi-axial stress states.

The reheat cracking, also known as stress relief cracking, has occurred many times in the welding coarse grained heat affected zones (CGHAZ) of Vanadium-modified (V-mod) 2.25Cr1Mo steel, but seldom researches on this problem have been conducted until now. In this paper, reheat cracking in welding CGHAZ of V-mod 2.25Cr1Mo steel was studied by the thermo-mechanical simulation methods. A screening test was carried out for simulating similar material to the real CGHAZ. The high temperature ductility of simulated CGHAZ was measured in the range of 600~705°C for determining the most sensitive temperature to reheat cracking. And then, the reheat cracking phenomena at the sensitive temperature was reproduced by Isothermal stress relaxation test and the micro-morphology of cracks was observed and analyzed. The results show that the thermal simulation parameters for acquiring the most similar materials to real CGHAZ are heat input of 35kJ/cm, heating rate of 1000°C/s and holding time at 1320°C of 1s. The reduction of area (RoA) of the simulated CGHAZ specimen first decreases and then increases with increasing temperature. It exhibits a minimum value at 675°C, corresponding to the most sensitive temperature to reheat cracking. In the stress relaxation test, the sample failure typically occurs with very low stress relaxation proportion (less than 15%) and extremely poor ductility (less than 5% in RoA). Both microvoid coalescence along the PAGB and intergranular wedge type cracks were observed in the fractured sample, proposing a mixed cracking mode of W-type and R-type in stress relaxation.

Formulas exist in various kinds of documents with different formats. Extracting and normalizing them into a unique form are the precondition of mathematical retrieval. In this paper, an extraction and conversion method of formulas in Word documents is built for mathematical expression retrieval. Firstly, the mathematical expressions in Word documents are detected through the processing of OLE objects. Then, the matching rules of formula format conversion are defined. Finally, the extracted mathematical expressions in OMML format are converted into LaTeX format follow the defined rules and stored in a txt file. Furthermore, the formulas exist in MathType format are stored in bitmap documents and converted into LaTeX documents through formula recognition and reconstruction module. Experiments show the effectiveness of the designed approach.

According to the discourses on the high-end agriculture and high-end industry, the concept and content of the high-end agriculture are discriminated and analyzed. The dynamic diamond model is proposed in this paper according to the stage of industrial development, and this model is applied to theoretical analysis and empirical study of high-end agriculture development, and relevant policy recommendations is clarified.

The energy enterprise group has its basic features and value properties, and it has the driving force of pursuing maximal value. As an important internal control mechanism, the internal audit system contributes to the value creation of the enterprise. The actual operating condition of the energy enterprise group is not consistent with its market performance. The value creation and development effect has not been recognized by the investors. Ignorance of the relationship between the management authority and its operating risk may lead to the damage of the energy enterprise value. Meanwhile, the transformation and upgrade of the energy enterprise group faces both opportunities and problems, which is important for the internal audit system to be improved through five directions—strategy improvement, function expansion, organization revolution, process reengineering and safeguard mechanism to meet the demands of the enterprise value development.

Certificateless-based signature can eliminate the need of certificates in the Public Key Infrastructure and solve the inherent key escrow problem in the identity-based cryptography. In 2012 Zhang et al. [J. Zhang and J. Mao, An efficient RSA-based certificateless signature scheme, Journal of Systems and Software, vol. 85, pp. 638-642, 2012] proposed the first certificateless signature scheme based on RSA operations and showed that their scheme is provably secure in the random oracle model. However, He et al. [D. He, M.Khan, and S. Wu, On the security of a RSA-based certificateless signature scheme, International Journal of Network Security, vol.16, no.1, pp.78-80, 2014] recently showed that Zhang et al.'s scheme is insecure against a type I adversary who can replace users' public keys. In this paper, we propose an improved version based on RSA which not only keeps the original security properties of the signature, but also is secure against a type I adversary.

At present, distributed integration setting calculation mode is widely used in power system. However, there are cross and overlap issues in protection relay model splicing process. Deeply researched in the characteristic of integrated relay splicing, according to power system network topology, an intelligent substation locating method based on the repulsion tension algorithm is applied in this paper. Finally, an example is used to verify the feasibility of the method.

Under the laboratory condition, use the mixture of coal cinder and soil, the mixture of fine sand and soil , and simple soil as the matrixes; use the Acorus calamus, the Typha angustata Bory et Chaub, and the Scirpus validus Vahl as the plants. Three groups of ditch systems are built to study the effect of different group of ditches in removing nitrogen and phosphorus pollution of paddy fields drainage ditch. The results show that the plants significantly improve the purification performance of ditches, the removal rate to TN of the ditch system based on the mixture of fine sand and soil and the Acorus calamus is 50.9% which is higher than other groups; the removal rate to TP of the ditch system based on the mixture of coal cinder and soil and the Acorus calamus is 48.1% which is higher than other groups.

Oxidation Reduction Potential (ORP) is one of the most important factors that not only influences the operation of subsurface wastewater infiltration system (SWIS), but also has a crucially effect on treatment efficiency and the environment of microbial. Therefore, this paper briefly analyzes the effects of ORP measures which are commonly used to improve ORP, such as flooding and drying alternate, constituting matrix, diffluent ratio, oxygen recovery by inflow pipes and roots of plants and soil animal activity , are summarized. Example analysis shows that all measures mentioned are practicable. With the deepening study of the technology, more attention will be paid on combining a series of different methods and applying new matrix materials for developing SWIS theory and research. The operation mode will be more flexible.

Separable words have important applications in many fields such as Chinese information processing, Chinese-English translation, teaching Chinese as a foreign language. There are about five thousand separable words distribute in the corpus of Chinese, and the word frequency is greater in the novel, so the study on identification of separable words is significant. This paper selects the higher discrete frequency of verb-object separable words as the object of the study, by examining the manifestation of extended components in different separable words and giving summary and detailed classification of the extended components on the large-scale corpus, a new approach is designed based on the words segmentation and the structure type of extended component. According to the experiments of identification mark to separable words of verb-object type, the average recall is 89.54% and the average precision is 87.43% in open test. The experimental results show that the method is effective.

Distributed protection relay value setting is widely applied in china. There is a graph chaos problem in protection relay model splicing process. Deeply study the characteristic of integrated relay splicing, combined with the substation voltage level, a substation locating method based on improved genetic algorithm is proposed. To enhance the graph splicing, a voltage level based method is applied. At last, a practical example is used to validate the effectiveness of the method.

Pb, Cd contamination is a serious enviroment problem in the process of exploitation and utilization of zinc mine. In this study, the contents and different fractions of Pb, Cd were investigated in a regions of zinc smelting with indigenous method. The results revealed that Pb, Cd pollution were seriously in smelting slags and farmland. The contents of Pb, Cd were 34 times and 9 times as that of the background values of soil. The sequential extraction test showed that 80% of Pb were associated with residual Pb, Fe-Mn oxides bound Pb and Organic bound Pb, while exchangeable fractions Pb was quitely lower.The sequence of Cd fracttions in slags was residual fraction>Fe-Mn oxide-bound>Exchangeable> Carbonate-bound > Organic-bound. The exchangeable fraction Cd in farmland soils was the most and reached 24%~43%. Bioavailability of Cd is very high in the studied area and had huge threat to the crop security and human healthy.

Microsoft China had announced that it would end on a Windows XP system support and maintenance in the April 8, 2014, progress in the new study. NET development environment, further research database development technology is very important. C# in. NET framework most popular development language, compared to other languages, which have simple, convenient, rapid development, etc.[1]. Based on data access technology under. NET Framework, which provides a number of features to improve the operation of data. This article also describes in the latest. NET Framework, a new language inheritance query technology LINQ.

With the increasingly large and complex systems issues in the aspect of reliability, availability, economy and maintenance, the advantages of condition based maintenance become more and more marked which requires the system itself has the prognostics and health management capabilities. Based on this, the integrated framework and applied technology of prognostics and health management to complex systems are studied, and the advantages of prognostics and health management techniques are summarized.

UCT (Upper confidential bounds on Trees) has been applied quite well as a selection approach in MCTS(Monte Carlo Tree Search) in imperfect information games like poker. By using risk dominance as complementary part of decision method besides payoff dominance, opponent strategies is better characterized as their risk factors, like bluff actions in Texas Hold’em Poker . In this paper, estimation method about the influence of risk factors on computing game equilibrium is provided. A novel algorithm, UCT-risk is proposed as modification about UCT algorithm basing on risk estimation methods. To verify the performance of new algorithm, Texas Hold’em, a popular test-bed for AI research is chosen as the experiment platform. The Agent adopted UCT-risk algorithm performs as well or better as the best previous approaches in experiments. And also it is applied in a poker agent named HITSZ_CS_13 in the 2013 AAAI Computer Poker Competition, which confirms the effectiveness of the UCT-risk provided in this paper.

The engineering vehicle cab FOPS (falling-object protective structures) mainly contain two parts: top guard and front guard. According to the characteristics of the engineering vehicle cab security architectures, the simulation that top guard is impacted by the falling hammer is made by non-linear analysis software – LS-DYNA. The breakage phenomenon is also researched. The stiffness of the top guard is so weak that the hammer’s displacement is too large, which leads to the impact resistance of top guard is unqualified. Based on this, the cause of the stiffness insufficient is researched. By orthogonal experimental design for the dominant factors, it makes the simulation performance of the top guard meet the requirements of the national standard. On this basis, the simulation mechanical bearing capacity of the front guard is done by LS-DYNA, while the experimental research is also accomplished. By contrasting the result of simulation and experiment, it turns that simulative result coincides with the experimental well.

How to apply big data technique in the innovation of government administration is one of hot issues of e-government. The paper discusses one method that applying visualization modeling technique, builds business model including organization model, resource model and process model. According to the connection rules in or among models, the paper also advances the methods to check integrity of models and simulate the business process for insuring the correctness, and to resolve the problem of normalization and accuracy. Then by extracting and integrating information resources from the business model, obtain unified business frameworks, and according to the efficiency factors that corresponding organization, resource, behavior, collaborative and product performance, collect big data and provide a quantitative analysis for the optimization of government business to guide the government business optimization strategy.

Main considerations for development of a virtual instrument (VI) have been presented, which include determination of algorithms, signal match, software filtering, meaesures to correct systematic errors, sampling rate, dand design of the control & diagram panels, debugging & simulating, and selection of developping platform. An example is given to illustrate the successful application of these considerations to process monitoring of brush plating.

One method for diagnosis of faults with generator rotor is contrived by combining local wave method and blind source separation. Time-frequency image varies with local wave of different fault signals, and this feature is applied to identify different faults. In order to realize automatic classification of faults, blind source separation is employed for separation of independent components in time-frequency image of local wave of different fault signals, so as to derive projection coefficients for a set of source images. On the basis of this, automatic classification of faults is realized with probability nerve network. Taking fault signal of rotor as an example, this method is investigated, and the validity is proved by experimental results.

In this paper, the extended ElGamal public key cryptosystem and digital signature scheme with appendix are described in the setting of the group of units of the ring.Elements of the group of units with the larger order are used as the base elements in the proposed extension instead of primitive roots used in the original scheme. Proposed schemes make periodic change of the group and base elements to provide necessary security level.

To reduce the congestion of trunk network caused by P2P transmission, a P2P transmission optimizing scheme is introduced in metropolitan area network (MAN) in this paper. In this scheme distance vectors such as Huffman Code are used to represent topology relations of nodes in MAN, and distance vectors of nodes which store nodes in topology server are built. According to the distance vectors, physical distances of each node are calculated, and most transmission flow is controlled on the edge of MAN, thus transmission optimizing is realized.

Due to the discontinuous axis and the big ratio of length to diameter, the large-scale crankshaft is easy to generate the complex elastic deformation under the effect of the huge gravity and the clamping force on non-circular grinding machine. The distinctive deformation deteriorates the coaxiality of all the main journals and thus the grinding precision of crankpins in non-circular grinding. In this paper, the statics analysis of large-scale crankshaft has been conducted by using the finite element simulation. The overall deformation of crankshaft and the position offset of each main journal center without or with the auxiliary supports have been simulated and contrasted. The results manifest that the auxiliary support forces produced by the steady rests have the positive effect on the compensation for crankshaft deformation. On this basis, to satisfy the demand of position adjustment of the upper and lower support pads of servo-controlled open steady rest, the on-machine measurement method and device of the position of main journal center is proposed. And then the offset calculation model of the main journal center is deduced using the measured data. The measurement method and device are beneficial for the straightening of the crankshaft and the improvement of machining accuracy of crankpins in non-circular grinding.

Based on the requirement of small errors in measuring roundness (cylindricity) error, a leveling methodology which using a dual-point vertical layout has been put forward and analyzed. According to the direction cosine of the axis of workpiece, the amount of leveling has been defined and calculated, which overcomes the problem brought by manual adjustment technology and forms theoretical bases of fast, accurate leveling and high precise measurement. The assessment of roundness (cylindricity) error is to search for a center (cylinder axis) which satisfies the minimum condition. Due to the reliance of initial solutions and relative slowness in terms of convergence precision and convergence rate when using Nelder-Mead simplex method, a combinative method of Quasi-Newton and N-M simplex method has been proposed which achieves a fast, accurate search for global optimums. With the proof of the simulation of classical testing functions using Matlab and the measured data, the convergence rate and precision will be enhanced effectively has been certified with the combination of both methods mentioned above which ensuring and improving the measuring precision of workpiece.

This paper studied the principles of thermal gas mass flow meter. According to the car engine EGR cooler working principle, we found out a kind of heat dissipation gas mass flow meter to measure the mass flow quantity of the gas in the EGR cooler test and analysis system which is a newly applied invention patent. We analyzed various parameters of the gas mass flow meter suitable to the system. Meanwhile, in order to verify reliability of the thermal gas mass flow meter in the system, we adopted CFD method to simulate the EGR cooler by using empirical parameters, and collected several related sensor parameters of the EGR cooler in the condition that the inlet temperature was constantly at 368K while the coolant had 4 kinds of degrees. Combining heat empirical formula, we got the EGR cooler outlet temperature and the overall heat transfer coefficient. After comparing the calculated values of the gas path total EGR cooler outlet temperature and heat transfer coefficients with the experimental values, we found that the outlet temperature values of experiment were smaller than the calculated values by averagely 1.17%, while the average experimental values of the overall heat transfer coefficient were 3.1% larger than the calculated values. Thus, this type of mass flow meter has good stability in the newly applied Chinese patent EGR cooler performance test and analysis system.

The generating polynomials of higher power residue codes over finite fields are difficult to construct. This paper gives explicit expressions of generating idempotents of quartic residue codes over the field $F_4$.The result will enable one to construct the generating polynomials of quartic residue codes over the field $F_4$ by computing the greatest common divisors of these generating idempotents and the polynomial $x^n-1$ with computer software such as Matlab and Maple.

This paper presents the development and evaluation of an adaptive two-phrase signal control strategy to resolve conflicting Transit Signal Priority (TSP) requests. The strategy was designed to provide adaptive transit signal priority control, using vehicle systems and existing traffic control devices. In this paper, the strategys efficiency was tested using a micro-simulation software VISSIM and build one arterial road contains five intersections and serves more than twenty conflicting bus lines. The VAP module was used to control TSP of conflicting requests. In the simulation, actual data was used. Finally, control efficiency about adaptive signal control strategy is discussed. The results show that the presented strategy can improve the operation efficiency of bus corporations. This signal control strategy reduced the travel delay time by 33 % to 55% of transit, while has little impact on private traffic. The strategy shows promising results. In addition, with minor upgrades, it can be applied to any type of intersection.

a generic methodology for development of a virtual instrument (VI) has been presented, which includes how to figure out the strategy of programming, which involves measure of converting measuring and testing scheme into VIs structure; how to design the control & diagram panels, how to correct measuring errors, and how to carry out debugging & simulating. An example is given to illustrate the successful application of the methodology to process monitoring of brush plating.

Because studies of traditional regional creations neglected the main role and value of human, ignored daily goods for the service of ordinary people and the relevance with the nonmaterial culture resources such as folk literature, folk rituals, folk beliefs, regional design has turned into the imitating, patching and borrowing from traditional forms, styles and prototypes, and ultimately become an over-elaborated decorative display, and gone further and further away from the essence of life. Therefore, reconstruction of both the implicit and explicit knowledge systems of the regional cultural resources becomes necessary for the purpose of finding out the deep value of regional cultural creations. We should explore deep into the relationship system involving people, matter, place, time and meaning through events of culture and life to activate the value and meaning value of traditional regional creations in contemporary life and in accordance with the sense of belonging in cultures.

Through the analysis of concepts of Kansei engineering, the frame of CNC machine form innovation design is based on forward quantitative reasoning type of Kansei engineering. This paper selected 40 pictures of representative CNC machine and 6 pairs of adjectives concerning evaluation of other feeling, conducted related investigations, and used SPSS17.0 statistical software for statistical analysis of survey data, provided the basis for the guidance of NC machine s form innovation and design evaluation through the research, so as to better meet the emotional needs of consumers.

White light scanner plays a vital role in reverse engineering. It has penetrated into all industries. It includes cars, grinding, aircraft, and mobile phone industry and so on. The paper introduces the basic principle of white light scanner and the measurement techniques.

Research and development of fault diagnosis system in application of integrated neural network information fusion is based on information fusion technology, with which preliminary analysis of equipment fault is made in different perspectives in terms of neural network, so as to identify the fault on the basis of fusion outcome. This technique is applied in fault diagnosis of one type of missile launching control unit, leading to sufficient use of various information and substantially increased fault diagnosis rate.

Cracking is a common problem existing in highway bridge abutments. Combing with projects, cracking reasons of one oblique U-type gravity abutment are analyzed by using a large and commonly used finite element software-FEM in this paper; in addition, preventive methods are put forward which can act as references for designing and constructions.

To improve model accuracy,tabu search is introduced to Gene Expression Programming (GEP) and impoves GEPs local search ability, Gene Expression Programming Based on Parallel Tabu Search (PTS-GEP) is proposed. In PTS-GEP, the research conducts experiment over the data from previously reported research and compares the result to two other algorithms namely simple GEP, UC-GEP. The results demonstrate the optimal performance of PTS-GEP in model accuracy.

This paper describes a phase frequency detector application using 0.18μm CMOS process. In order to cover the high frequencies of input signals, TSPC D flip-flop structure are applied. The core area of proposal phase frequency detector is 60 μm×50 μm. The simulating results show that rang of operating frequency is from 500kHz to 500MHz and the power consumption is 0.722mW under a 1.8V supply.

According to the characteristic of high ammonia nitrogen concentration of Huaihe River in winter, a pilot-scale test was studied in this paper. This paper compared the start-up and operation performance of zeolite biofilter, quartz sand + activated carbon biofilter and zeolite + activated carbon composite biofilter in lower temperature. The results show that three kinds of biofilters for NH4+-N have high remove effects. Average removal rate of zeolite biofilter, quartz sand + activated carbon biofilter, zeolite + activated carbon composite biofilter for NH4+-N were 73%,64% and 78% and effluent NH4+-N concentration were 0.31mg/L,0.24mg/L,0.21mg/L. Average CODMn removal rate of three kinds of biofilters were 5%,13% and 28%. Zeolite + activated carbon composite biofilter does not exist to NO2-N accumulation phenomenon and showed good ability to start-up and running.

t is known that the performance of a signal constellation used to transmit digital information over the additive white Gaussian noise channel can be improved by increasing the dimensionality of the signal set used for transmission. This paper derives an algorithm for constructing codes for six-dimensional signals over finite fields of the algebraic integer ring of the cyclotomic field modulo irreducible elements with the norm , where is a prime number and or .These linear codes can correct some types of errors and provide an algebraic approach in an area which is currently mainly dominated by nonalgebraic convolutional codes.

ATOS three-dimensional optical scanner is one of the most advanced technologically three-dimensional optical scanning devices. It can automatically put together the multiple scan view image by the reference point of the measurement system, with high accuracy, high speed Etc. It is widely used in automobiles. The paper combines with the experience in vehicle measurements, analysis the error cause in the actual use, points out ways to reduce or eliminate error. It has the great application value to actual measurement.

The basic theory of rough set is given and a method for texture classification is proposed. According to the GCLM theory, texture feature is extracted and generate 32 feature vectors to form a decision table, find a minimum set of rules for classification after attribute discretization and knowledge reduction, experimental results show that using rough set theory in texture classification, accompanied by appropriate discrete method and reduction algorithm can get better classification results

Combined with available local resources and traditional manufacturing techniques of Yimeng mountain area, several transformation methods, which are ecological economical and practical for the existing rural housing, are put forward. After optimization, the rural residence will be more energy-efficient, more environmental and more comfortable. The aim of the paper is to make the eco-renovation feasible and economical for farmers and popularize the reform measures in more rural areas like Yimeng.

The generating polynomials of higher power residue codes over finite fields are factors of the polynomial .Generally speaking; it is difficult to factor the polynomial over finite fields. This paper gives generating idempotents of cubic residue codes over the field .As a result, the generating polynomials of cubic residue codes over the field can be obtained by computing the greatest common divisors of these generating idempotents and the polynomial with computer software such as Matlab and Maple.

The structure and processing of car holders castings were analyzed. Die-casting molding process scheme was established. The design of mold includes three core-drawing mechanisms. the gate of the gating system was arranged on the casting bottom surface. For economy and die easy maintenance considerations, die-casting machine, mold, and mold standard parts should be standard parts. The designs of mold gating system and non-standard pieces were completed with the aid of PROE. Proved by actual production, the mold operated smoothly, without clamping stagnation, and the production of die castings meet delivery requirements.

The rapid development of urbanization in China brought serious challenges for the rural development and led to the phenomenon of inner-decaying village. Through a on-the-spot investigation, detailed informations of typical villages over the past 30 years are obtained. By the quantitative analysis of the home interview and field measurement data, and interpretation of satellite images, this paper summarizes the shape change regularity of villages in urbanization process, systematically analyzes the causes of inner-decaying village and then proposes solutions of it.

In this paper, a clustering algorithm based on data mining technology applications, the use of the extraction mode noise characteristics amount and pattern recognition algorithms, extraction and selection of the characteristic quantities of the three types of mode, carried out under the same working conditions data mining clustering analysis ultimately satisfying recognition.

This paper has designed a new type of mechanical structure for a coin-wrapping machine; It’s three-dimensional model has been established by Pro / E 3D modeling software and the kinematic of the Integrated model analysis has been carried out. The simulation results have shown that the coin wrapping process can be simplified and the efficiency can also be improved with the new structure, thereby reducing the costs.

Aim at experimenting the micro-polluted characteristic of Huaihe River water, a pilot-scale test by the combination process of ozone/ultraviolet (UV) /biological activated carbon (BAC) filter for advanced treatment of drinking water was applied. The removal efficiency of general pollution indexes by combined process with different ozone dosages (1.0~3.0 mg/L) was investigated. Along with the increase of ozone dosage, the removal efficiency of CODMn and UV254 generally increased in ozone/UV oxidation process; The removal effect of NO2--N by ozone/UV oxidation was obvious; The removal of turbidity and NH3-N was mainly in BAC filter phase; When the ozone dosage was 2.0~2.5 mg/L, the general pollution indexes had gotten satisfying results, thus it was not necessary to increase the ozone dosage.

Welded rectangular steel tubular joints have been widely used in large span complicated steel structure engineering .With the type of the joints and structural measures complicated, there is no suitable joints theory formula in design specifications. In this paper, two different structural measures types of umbrella steel truss # 8 joints and 68 # joints in a Railway Station are static analysis ,which is by means of finite element software ANSYS and based on the principle of the joints member loading simultaneously. The analysis results show that: in the case of the joints member loading simultaneously, the carrying capacity variation of each member is not uniform coordination; With the different angle between the branch pipe of joints and main pipe, the changes of the degree of stress concentration in the four side surfaces of the member is different. The maximum difference is about 2-fold; compared 68 #joint with 8 # joint, its degree of stress concentration on the overall is small, which prove that structural measures of its domain joints is reasonable.