bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of Corrosion Mechanism of Al2O3-MgO Refractories and its Effect on Cleanness of Molten Steel
Authors: Liu Jun , Feng Hai Xia
Published: August 2014

High purity AL2O3-MgO carbon-free refractories for ladle lining were investigated, this paper compared with the properties of bricks with different bond system and different production process, and study the wear mechanism, the TOC and hydrogen content change; analyzing the microstructure of residual bricks and the impact of refractories on quality of molten steel;Conclusions:The two kinds of bricks have different wear mechanism, the bricks bonded by a-bond was damaged mainly by penetration and erosion while the bricks bonded by resin was damaged by structure spalling and they have different effect on cleanness of molten steel.
Investigation of an Isatin Schiff Base as Corrosion Inhibitor in NaCl Solution
Authors: Gao Li Da
Published: August 2014

Isatin Schiff base, 3-(4-hydroxyphenylimino) indolin-2-one, was investigated as an corrosion inhibitor in NaCl solution. The structure was analysized by X-ray single diffraction. The inhibition and the mechanism of the title compound on the corrosion of high protective Q235A steel in NaCl solution were screened and discussed. The results indicated that it can inhibit the corrosion with moderate inhibition efficiency in different conditions, and the inhibition mechanism of the corrosion inhibiting may be mainly contributed to the adsorption.
Thermal Safety Study of One New-Type DB Propellant
Authors: Jia Hao Nan , Lu Gui E , An Zhen Tao , Jiang Jin Yong , Ge Qiang , Wang Shao Guang
Published: August 2014

The thermal safety of one new-type DB propellant SZQu-1 was studied by ARC. The test results were compared with the one of double-base propellant SF-3. The ARC test results show that, in an ideal adiabatic environment, the initial exothermic temperature for SZQu-1 is 129.0°C, the adiabatic temperature rise is 787.0°C, the maximum self-heating rate is 23329.9°C/min, the maximum pressure rise rate is 51.2×105Pa·min-1, and the maximum pressure produced by unit mass is 124.1×105Pa·g-1. The activation energy E is 212.2kJ·mol-1, the frequency factor A is 1.3×1022 s-1, and TD24 is 123.0°C, which are calculated by the velocity constant method. The studies have revealed that, comparing with SF-3, SZQu-1 has worse thermal stability and stronger explosiveness.
Energy Method in the Calculation Stability of Compressed Polymer Rods Considering Creep
Authors: Andreew Vladimir I , Chepurnenko Anton S. , Yazyev Batyr M.
Published: August 2014

The problem of stability of the polymer rod in creeping was solved by energy method in the form of Timoshenko and Ritz. Possible displacements of the points were given in the form of a trigonometric series with undetermined coefficients. Results obtained numerically using complex Matlab under different constraint equations between creep deformations and stresses. There are shown the necessity of taking into account the "junior" component of high-elastic deformation by using the Maxwell-Gurevich equation.
Effect of Polyolefin on Color Difference of Ethylene Propylene Diene Rubber/Aluminium Oxide Composites
Authors: Su Jun , Li Cai Hong
Published: August 2014

This paper evaluate how colorimetry change of ethylene propylene diene rubber (EPDM)/Aluminium oxide (Al2O3) composites when added with four types of crystallized resins. The results indicate that the filler Al2O3 can turn EPDM control from lighter, redder, and yellower to darker, greener and bluer, respectively. The total color change (ΔE) of EPDM/Al2O3 composites increase with the decrease amount of crystal lattices. EPDM/Al2O3/Polypropylene (PP) composite, with the highest crystallinity of PP, has little change of the lightness value and the total color change of EPDM compostes due to light scatter.
The VO Defect in Electron Irradiated Czochralski Silicon
Authors: Cai Li Li , Wang Hui Bin , Feng Cui Ju , Chen Gui Feng
Published: August 2014

The Czochralski silicon (CZ-Si) samples were irradiated with 1.5 MeV electrons and annealed at 200 - 450 °C. It was investigated the effect of irradiation dose and interstitial oxygen content [Oi] on VO concentration by Fourier transform infrared spectroscopy (FTIR). The results show that VO concentration increases with irradiation dose but not linear increase. The interstitial oxygen content has no effect on VO concentration. The VO intensity increases firstly and then decreases after annealing in samples with low oxygen content. The VO disappears at 450 °C. In high oxygen content samples, VO exhibits thermal stability and disappears at 400 °C.
Facile Process for Preparation of PS/PtOEP Composite Microspheres and their Oxygen Sensing Properties
Authors: Li Song , Zhang Ke , Hao Su E
Published: August 2014

In this study, the monodispersed PS/PtOEP microspheres were successfully synthesized by dispersion polymerization, in which anhydrous ethanol and ultrapure water as dispersing agent, AIBN as an initiator, styrene as monomer, PtOEP as the fluorescent substance. Polystyrene microspheres with the size of the initiator, dispersant, the amount of monomer and so on, and has nothing to do with PtOEP. We can be obviously seen under scanning electron microscope. When in the same content of PtOEP, the particle size of composite microspheres size increases with increasing monomer concentration. When the excitation wavelength was 362nm, the PtOEP peak measured emission spectrum at 720nm. With the increasing size of composite microspheres, the peak fluorescence intensity changes. From the S-V diagram, we observed that the concentration of luminous intensity of composite microspheres monotonously dependent on oxygen, there is a linear correlation between PtOEP in 720nm fluorescence intensity and the concentration of oxygen. This method can be utilized to reliably monitor the content of oxygen in the system.
Preparation of Sm2Fe17 Columnar Grains Ribbons by Rapid Quenching
Authors: Lin Guo Biao , Luo Xiang , Bi Wen Long , Bao Xiao Qian , Mao Wei Min
Published: August 2014

The ingot of Sm-Fe alloy was prepared by vacuum melting. After a process of coarse crushing, it was made into Sm-Fe ribbons by melt-spinning. By analysis of XRD and SEM, it was confirmed that the ribbons composed of fine Sm2Fe17 columnar grains with almost the same orientation can be obtained under the condition of 5~7m/s surface rotating velocity of Cu wheel, suitable nozzle size, injection pressure, temperature and composition of the Sm-Fe melt to regulate cooling rate and crystallization. The achievement of the ribbons lays a foundation for preparing anisotropic Sm2Fe17Nx magnetic powders by rapid quenching.
Improved Model of Middle Layer Used for Design of Piezoelectric Bimorph Actuator
Authors: Zhou Yu Hua , Zhou Chang Sheng , Chen Xiong
Published: August 2014

In this study, the disadvantage that adhesive layer of piezoelectric bimorph actuator was ignored when model of actuator was developed by predecessors is indicated, according to the actual structure of actuator. Based on the thickness of adhesive layer and substrate, the improved model of adhesive layer that substrate and adhesive layer are combined as one layer called mid layer is proposed. Mathematical model of mid layer can be obtained with theory of composite material, which is then used to develop the model of actuator under electrical load. Another model of actuator is developed as a reference in the same way except with model of adhesive layer used by predecessors, and experiment is also presented later. Performance predicted by these two models of actuator and result measured in the experiment are compared, which comes to a conclusion that model of actuator developed with the improved model of adhesive layer conform to the physical model and is more precise in performance prediction.
High Yield Polyborosilazane Precursor for SiBN Ceramics
Authors: Jin Shuai Yong , Guo Kang Kang , Qi Hui Min , Zhu Ya Ping , Wang Fan
Published: August 2014

The processible and high yield polyborosilazane (PBSZ) precursor for SiBN ceramics was prepared by coammonolysis reaction of dichlorosilane and trichloroborazine. The synthesized PBSZ precursor was characterized by Fourier Transform Infrared spectroscopy (FTIR),1H,11B, and29Si Nuclear Magnetic Resonance (NMR), and its ceramic conversion chemistry was investigated by differential scanning calorimetric (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermal gravimetric analysis (TGA). The PBSZ precursor is a viscous liquid and changes to an insoluble solid via a cross-linking reaction between the N-H group and Si-H group as post-heated from 60 to 180°C. The insoluble solid is transformed to Si3N4and BN amorphous structures with an approximately 95% ceramic yield after being pyrolyzed to 1000°C.
Recent Simulation Study on Precise Positioning of Carbon Nanotubes by Dielectrophoresis
Authors: Wang Xiao  Chong , An Li Bao , Chen Yan
Published: August 2014

Carbon nanotubes (CNTs) have been widely studied for their unique size-dependent electrical, mechanical, and chemical properties. However, CNTs need to be precisely positioned in complex device structures. Dielectrophoresis (DEP) is an effective and practical method for precise assembly of CNTs. In this paper, the researches on simulation of precise positioning of CNTs by DEP are reviewed. Single electrode pairs include those with round, triangle, and rectangular tip shapes and electrode arrays such as comb electrodes are also taken accounted. The moving trajectories of CNTs during DEP from the selected literature are introduced. The effect of floating electrodes on precise manipulation of CNTs is examined as well.
Simulation of the Electrical Properties of Semiconductive BaTiO3 Ceramic Varistors Using Continuum Theory
Authors: Fang Chao , Chen Liang Yan
Published: August 2014

A continuum field model describing the electrical characteristics of polycrystalline semiconductors ceramics is suggested. Taking into account the continuum theory, a static differential equation about electron level on the base of Poisson equation is established. The one-dimensional quantitative calculation is carried out using the Runge-Kutta method. The results show that as the applied voltage increases, the grain boundary barrier in the nonlinear zone drop drastically. The nonlinear characteristics of high temperature paraelectric phase is larger than that of room temperature ferroelectric phase.
The Influence of Li on the Point Defect Structure of ZnO Varistor Ceramics
Authors: Zhao Lei , Cheng Peng Fei
Published: August 2014

In this paper, the dielectric properties of ZnO-Bi2O3 based varistor ceramics doped with Li are investigated by Novocontrol wide band dielectric spectrometer. It is found that Lithium is an amphoteric impurity. If the content of Lithium is very low, It will enters into the interstitials and Lithium interstitial is formed as a donor. While with the increase of Lithium content, Zn is replaced with Li and Lithium substitution for Zinc as a acceptor is formed. If the content of Lithium increases further, Lithium interstitial is formed again with the redundant Lithium. Therefore, the concentrations of intrinsic point defects of Zinc interstitial and oxygen vacancy varies with the content of Lithium, which leads to the increase of Schottky barrier at grainboundary with Lithium.
Non-Isothermal Method for Charactering the Oxidation Resistance Property of SiAlON Materials
Authors: Wang Xiu Teng , Xiao Pu , Wang Bo , Xu Ling , Lin Ling , Huang Jin , Gao Dong Feng , Zhang Jian Song , Zhang Zuo Tai
Published: August 2014

The oxidation resistance of SiAlONs is one important property. In our work we present a test method to characterize its anti-oxidation property with the non-isothermal oxidation process using Thermo Gravimetric Analyzer (TGA). The oxidation starting temperature (Ts), maximum oxidation rate temperature (Tm) and the value of the oxidation weight gain per unit area (Ga) are three key parameters to describe the antioxidant properties of the material. Experimental results prove this test method is easy and reasonable and it will be developed as the national standard of China.
Research on Feasibility and Structural Design of Fiber Reinforced Composite Sluice Gate
Authors: Gao Yin Jun , Liu Ming , Han Zhong Kai , Yang Yong Xin , Zhang Zhao
Published: August 2014

Fiber reinforced composite has been studied and exploited for its excellent mechanical properties, low cost, and outstanding durability for many years. Traditional sluice gates are generally heavy, clumsy, and susceptible to corrosion. The application of fiber reinforced composite is an appealing alternative, which is cost-saving and environmental friendly. Proper design can make the new material gate maintain good mechanical performances and easier to install.
Research on the Dynamic Buckling Characteristics of Carbon Fiber Composite Honeycomb Panel under Out-of-Plane Impact Load
Authors: Fan Ming Jun
Published: August 2014

This paper aims at studying the dynamic buckling characteristic of the fiber composite honeycomb under out-of-plane impact load. It was found that: with the increasing of the wall thickness, both the critical buckling load and the critical failure load of the composite honeycomb will decrease gradually. By increasing the wall aspect, the critical buckling load will decrease, while the critical failure load will increase. However, when the aspect reaches to 3.5,both the above two kinds of load are no longer sensitive to the variation of it.
Study of Wood Plastic Composites on Mechanical and Thermal Properties after Immersed into Water
Authors: Yu Wang Wang , Xue Dong
Published: August 2014

In this study, silvergrass (SV) reinforced high density polyethylene (HDPE) composites were prepared. The effects of slivergrass fibers (SV) content on the mechanical properties, crystalline properties of wood plastic composites (WPCs) before and after water absorption were investigated. It was found that compared with the untreated WPCs after immersed into water, the tensile strength of PMDI treated composites were higher. Silvergrass can be the nucleating agent with treated by PMDI. The Xc of PMDI treated WPCs after immersed into water was also increased. However, this improved Xc has negative effect on mechanical properties.
Colorimetry of Ethylene Propylene Diene Rubber/Mica/Polyolefin Composites
Authors: Su Jun , Li Cai Hong
Published: August 2014

This paper examined the effect of addition of four polyolefins and mica on colorimetry of ethylene propylene diene rubber (EPDM) composites. The results illustrate that the addition of mica can turn EPDM control from lighter, redder, and yellower to darker, greener and bluer, respectively. The total color change (ΔE) of EPDM/mica composites changed with various types of polyolefins. Ethylene alpha olefin (POE) with lowest crystallinity decrease the Δa of EPDM/mica composites to the greatest extent, while EPDM/mica/Polypropylene (PP) composite, with highest crystallinity of PP, has little change of the lightness value.
Heat-Transfer Stability of Porous Fibrous Composition under Different Condition
Authors: Wang Yu Juan , Chen Hai Zhen , Wang Jin Mei , Wang Mei Zhen
Published: August 2014

In this paper, the influences of different conditions on heat-transfer stability of porous fibrous composition were analyzed by the one-dimensional unsteady heat transfer model. It was resulted that the surface condition of composition was key parameter for heat performance during different thermal process. Great humidity and thermal difference caused the heat transfer fluctuating of material covering, and then changed the thermal conductivity. For the insulation materials under low temperature, the heat performance was sharply fluctuated nearby 0°C.
Li4Mn5O12 Lithium Ion Sieve Preparation and Adsorption Properties
Authors: Dong Dian Quan , Dai Hong Bo , Zheng Jian Guo
Published: August 2014

Polystyrene microspheres with 120nm diameter were synthesized by emulsion polymerization and three-dimensionally ordered colloidal crystal templates were obtained by centrifugal sedimentation.Three dimensionally ordered nanopore (3DON) manganese oxide lithium ion-sieve was prepared after filtration, two heated roasting and acid modified by using precursor solution filling the colloidal crystal templates, which was prepared by Lithium salt, manganese salt and citric acid. SEM, XRD, and saturated exchange capacity test were used to characterize the roasting condition, appearance, structure, and ion exchange performance of the oxide. The results showed that, the optimum roasting condition of preparing lithium ion-sieve precursors were found as follows: heating rate at 2°C/min, 300 °C roasting 4h and 800 °C roasting 8h, The 3DON Li4Mn5O12 lithium ion sieve precursor has the shape of three-dimensional cross-linked connected into the network structure. Li4Mn5O12 was regularly arranged and the hole wall was integrity,average pore size of approximately 90nm.3DON Li4Mn5O12 showed good stability for acid and the retrofit of lithium ion-sieve showed a high selectivity for Li+. The saturated exchange capacity of Li+ is 51.98mgLi+/g.
SAPO-34/SiO2 Catalysts for the Transformation of Ethanol into Propylene
Authors: Xia Wei , Sun Qi , Liu Shang Wen , Qiang Lin Ping , Cui Yuan Cun
Published: August 2014

Ethanol has great potential to be a candidate for the source of light olefins such as ethylene and propylene. However, ethanol to olefin (ETO) process has not been fully investigated. In this work, the conversion reactions of ethanol were carried out at 673 K under atmospheric pressure on SAPO-34 and SAPO-34/SiO2 catalysts. SAPO-34 and SAPO-34/SiO2 exhibit higher selectivity for propylene than H-ZSM-5 zeolite catalysts do. The SAPO-34 with silica binder showed better catalytic performance for the transformation of ethanol to propylene than the SAPO-34 catalyst.
Study on a New Anodic Oxidation Protective Coating of Alumina
Authors: Li Zhi Yang , Pei Yi , Chen Qing Qing , Ji Jian , Ni Hon Jun , Wang Xing Xing
Published: August 2014

By studying the performance of carbon anode oxidation protective coating, which main component is alumina, adjusted coating formulations, determined the optimum coating formulation under certain conditions. Heating texting method was adopted to test sample performance, study showed that the new oxidation protective coating on the surface of the carbon anode can be uniform and dense.
Structural Properties of P-Type ZnO Thin Film Post-Treated by NH3 Plasma Method
Authors: Cao Ping , Bai Yue
Published: August 2014

In this paper, a simple method is reported to obtain nitrogen-doped p-ZnO film. In this method NH3 plasma, generated in a plasma-enhanced chemical vapor deposition system, was employed to treat ZnO thin film. By hall-effect measurement a p type conductivity was observed for the treated film with the hole density of 3.6×1016. XPS result confirmed nitrogen was incorporated into ZnO film during the treatment process to occupy the oxygen positions.
Performance Study of Ti-Pillared Montmorillonite Nanocomposites
Authors: Tuo Bi Yang , Wang Jian Li , Yao Yan Li , Liu Zhu Lin
Published: August 2014

Ti-PILCs (Ti-pillared Montmorillonite Nanocomposites) was obtained from which Ti (n-C4H9O)4 cross-linked Na-montmorillonite through Sol-gel means. The analysis results of BET, FT-IR and TG-DSC shows that a large amount of middle porous of 2-4nm exist in the Ti-PILCs interlayer and the porous distributing is not uniformity, meanwhile, the thermal stability is over 900 °C. It has good application prospect to use as carrier materials material of oil catalytic and cracking.
Protein Structure Prediction Based on Profile HMM and QPSO
Authors: Long Hai Xia , Wu Shu Lei , Lv Yan
Published: August 2014

Protein structure prediction is a challenging field strongly associated with protein function and evolution determination, which is crucial for biologists. Despite significant process made in recent years, protein structure prediction maintains its status as one of the prime unsolved problems in computational biology. In this study, we have developed a method for protein structure prediction based on 7-state HMM which can reduce the number of states using secondary structure information about proteins for each fold. The QPSO is an efficient optimization algorithm which is used to train profile HMM. Experiment results show that the proposed method is reasonable.
Study on Microwave-Assisted Extraction Technology of Total Flavonoid from Castor Leaves
Authors: Jiang Yi Hua , Jiang Xin Long , Cai Cheng Gang
Published: August 2014

Orthogonal experiment optimization of microwave-assisted extraction (MAE) conditions of total flavonoids from castor leaves with the factors of ethanol concentration, microwave power, extraction time, solid/liquid ratio on the yield of total flavonoids were studied. The results showed that optimum extracting conditions of total flavonoids from castor leaves were as follows: adding 1:50 g·mL-1 of 40% alcohol and extracting for 3 min,microwave irradiation power 464W. Microwave extraction of total flavonoids from castor leaves is fast, energy saving and high extraction rate.
Flocculation of Botryococcus Braunii with Glycine
Authors: Xu Xin Miao , Chen Chao Zhou , Shen Ying
Published: August 2014

The objective of this paper was to optimize the flocculation and biomass productivity of Botryococcus braunii by using an organic carbon source glycine. The effects of culture period and glycine dose with high, medium and low levels on both solid concentration achieved and biomass productivity were conducted. It was found that extracellular polymeric substances (EPS), which promotes flocculation, was produced not only by bacterial but also by microalgae. The productivity of EPS was affected by culture period, glycine dose and mixing time. The maximum EPS of 103.3 mg/L obtained with 11 day culture period and 0.1 g/L glycine, leading to the maximum solid concentration achieved of 51 g/L, the biomass recovery rate 72%.
Determination of Patulin Residues in Canned Fruits by HPLC
Authors: Lin Ling , Yang Chun Liang , Zeng Shao Dong , Li Qi , Guo Hong Bin
Published: August 2014

A sensitive method for determining residues of patulin in canned fruits was established by HPLC.Canned fruit samples were extracted with acetonitrile and purified through multifunctional cleanup column.Collected purifying liquids and blowed N2 to nearly dry,and then using the mobile phase to dissolve and constant volume, and were determined by UV detection at 276 nm with external standard method for quantitative, the recovery rates of patulin in canned fruits were 80%~95%, The RSD were of 2.2%~6.5%,the limit of detection was 0.012 μg /kg for patulin.
Effect of the Additive 45S5 on the Properties of Bioactive Glass Scaffold Materials
Authors: Ju Yin Yan , Li Qiang , Zhang Wang Nian , Chen Xiao Feng
Published: August 2014

The bioactive glasses 58S was first prepared using sol-gel technique and the 45S5 bioactive glass was prepared through melting method. The above bioactive glasses were then grounded into fine powders, and each of the glass powders and their mixtures was doped with the porogen in certain ratios respectively. The bioactive porous materials were finally produced through sintering. We investigated the microstructure, surface morphologies, bending strength and bioactivity of the porous materials via in vitro method combined with DTA, SEM and FTIR techniques. The results show that the porous material made from the 58S and 45S5 mixture possesses the best bioactivity and bio-mineralization function among all samples, thus is a very promising bioactive material for bone defects filling or bone tissue engineering scaffolds.
Degradation of Dyes by H2O2 with Activated Charcoal Supported MgFe2O4 under Microwave Irradiation
Authors: Huang Jian Hua , Dong Jing , Liu Zu Lan , Liu Yi Ping , Wu Da Yang
Published: August 2014

In this study, MgFe2O4 is produced by the chemical coprecipitation method and supported by activated charcoal (C/MgFe2O4). It is observed by the FT-IR spectra and the true density. The dyeing wastewater modeled by dye Reactive Brilliant Red X-3B solution is dealt with H2O2 on the radiation of microwave and used the C/MgFe2O4 as adsorbent and catalyst. Tests are designed by the response surface methodology (RSM) to annalyze and optimize the process. The optimum condition is: 3 gram of C/MgFe2O4, the pH of 5, 1.1mL H202, the microwave power of 150W. The results say that C/MgFe2O4 is very good on catalyzing the degradation of dyeing wastewater when using the H2O2 under microwave irradiation.
The Design of Ceramic Minkowski Fractal Antenna
Authors: Ye Xiu Bin , Kou Guo Peng , Ji Yi Juan
Published: August 2014

Antennas play an important role in RFID system. As one of the key technology of RFID, the antenna design decides the RFID system performance. This paper designed a ceramic Minkowski fractal antenna used in RFID system. It used Minkowski fractal structure as the radiation patch and the high performance ceramic material to reduce the antenna size, then improve it with rectangular joint structure in the antenna's ground plate. In this paper, the antenna performance are analyzed in the simulation, In this paper, the antenna performance are analyzed in the simulation, it discussed the thickness of the medium plate and the effect of dielectric constant on the performance of microstrip antenna, finally make antenna samples for testing. The simulation and test results show the antenna designed meet the requirement of RFID applications.
A Self-Study Harmony Search Algorithm for Optimization Problems
Authors: Zhang Ping , Li Mei Ling , Han Qian , Li Guo Jun
Published: August 2014

A self-study harmony search (SSHS) algorithm for solving unconstrained optimization problems has presented in this paper . SSHS employs a novel self-study strategy to generate new solution vectors which can enhance accuracy and convergence rate of harmony search (HS) algorithm. SSHS algorithm as proposed, the harmony memory consideration rate (HMCR) is dynamically adapted to the changing of objective function value in the current harmony memory. a large number of experiments improved that SSHS has demonstrated stronger convergence and stability than original harmony search (HS) algorithm and its two improved algorithms (IHS and NGHS)
Application of Tabu-Genetic Algorithm in Reactive Power Optimization
Authors: Zhang Song Tao , Wang Gong Bao , Wang Hui Bo
Published: August 2014

By using tabu search algorithm which has strong local search ability as mutation operator of genetic algorithm, the tabu-genetic algorithm is designed for reactive power optimization in this paper, the strong global search ability of genetic algorithm and strong local search ability of tabu search algorithm is combined, the disadvantage of weak local search ability of genetic algorithm is conquered. Otherwise, the over limit of population is recorded and filtered, to ensure the final individual is under limit and effective. The tabu-genetic algorithm and simple genetic algorithm are used for simulation of IEEE 14-bus system 500 times, the results indicate that the performance of the tabu-genetic algorithm is much better than the simple genetic algorithm, its local search ability is improved obviously, and the active power loss is reduced more.
Color Temperature, Hues and Brightness Tuning Method for Images in Digital Cameras
Authors: Chen Huai Yi , Tsuei Chih Hsuan
Published: August 2014

A method by shifting chromaticity coordinates to immediately adjust the color temperature, hues and brightness of white-balance processed pictures in a digital camera was proposed. This method could be embedded into the firmware of an image processor to improve shortcomings of any white-balance algorithm. In addition, the picture took by a digital camera can be processed directly in the digital camera to obtain the desired color temperature, hues and brightness with no aids of image software.
Opposition-Based Learning Harmony Search Algorithm Solving Unconstrained Optimization Problems
Authors: Zhang Ping , Sun Peng , Li Guo Jun
Published: August 2014

Recently, a new meta-heuristic optimization algorithm–harmony search (HS) was developed,which imitates the behaviors of music improvisation. Although several variants and an increasing number of applications have appeared, one of its main difficulties is how to enhance diversity and prevent it trapped into local optimal. This paper develops an opposition-based learning harmony search algorithm (OLHS) for solving unconstrained optimization problems. The proposed method uses the best harmony to play pitch adjustment, and bring the concept of opposition-base learning into improvisation, which enlarged the algorithm search space. Besides, we design a new parameter setting strategy to directly tune the parameters in the search process, and balance the process of exploitation and exploration. Numerical results demonstrate that the proposed algorithm performs much better than the existing HS variants in terms of the solution quality and the stability.
Intrusion Detection for Universal Attack Mode Based on Interval Temporal Logic with Past Construct
Authors: Li Yong Liang , Zhu Wei Jun , Zhou Qing Lei
Published: August 2014

Compared with the intrusion detection based on pattern matching, the method which is based on model checking can detect the complex attacks. But all of the existing algorithms are used to detect some specific types of attacks. So, we firstly use the Interval Temporal Logic with Past Construct (ITLPC) formulae to set up formal sub-models respectively for the five kinds of attackers, the four kinds of attack processes and the eight kinds of attack effects. According to their universal relationship and the semantic relation of variety of ITLPC logic operators, we obtain the above sub-models together, thus, the universal models described by ITLPC formulae for universal attacks are formed. On this base, we implement an intrusion detection method based on ITLPC for detecting all types of attacks. Compared with the existing methods, the detecting ability of the new method is more comprehensive.
A New Genetic-Based Approach for Function Optimization
Authors: Rabiee Azam , Vali Masoumeh
Published: August 2014

We present a novel genetic-based algorithm for optimizing n-D simple-bounded continuous functions. In this paper, we propose a new mutation operator, called rotational mutation. The proposed approach starts from the vertices of the polytope created by the simple bounds, as the initial population. Similar to the conventional genetic algorithm, we calculate the optimum point of each population based on its cost value using the elitism mechanism. Then, we create the new generations based on the proposed rotational mutation and the conventional crossover operators. We have evaluated the algorithm on the two well-known test problems. Experimental results showed that the proposed approach outperforms the conventional genetic algorithm, in terms of the number of generations.
Student Information Management System Based on Android Platform
Authors: Wang Jian Fa , Liu Juan , Jiao Liang Yu
Published: August 2014

In this paper, the development of Android-based student management software system to enable students to school, interaction with parents and the school has a new platform, on this basis, the promotion of the work process simple, efficient work, experience and scientific student management and quality, making schools reach new heights in the promotion of information technology.
The New Method for Power Quality Indices Estimation
Authors: Hai Ying , Chen Jing Yu
Published: August 2014

In this paper, the rotational invariance technique (ESPRIT) based on the cross-correlation matrix is used to estimate the power quality indices (PQI) . This method enables the alleviation of the effects of additive noise, and improves the computational efficiency. Computer simulation and experimental were performed on synthesized signals to assess the performance of the method.
Comprehensive Evaluation for Cast-in-Place Lightweight Gypsum Wall Based on the Theory of Fuzzy Matter-Element
Authors: Gang Jia Bin , Li Hui Min , Chen Xu , Gao Ming Zhe
Published: August 2014

Cast-in-place Lightweight Gypsum Wall is a new green wall that industrial by-products are used as the main raw materials and the spot construction is employed by casting in place for construction, which improves the integrity and seismic performance of the wall. Focusing on the cast-in-place light gypsum wall, the body comprehensive evaluation model is established based on the theory of fuzzy matter-element in the background of "Performance", "Technology", "Economy" and "Environment" for evaluation index system. Furthermore, AHP, expert scoring and other methods are used to determine the weights of each value in the evaluation index system.And the principle of comprehensive evaluation is the maximal subjection degree.These will serve as a theoretical underpinning to find the weakness of such walls and explore the market and application prospects.
Water Absorption Technology of Gas Drilling
Authors: Tang Bo , Feng Guang Tong , Xu Hao
Published: August 2014

In recent years, the development of super-absorbent material was very fast, its ability to absorb water up to several hundred or even thousands times of its own weight, it provides a new way of gas drilling to solve the water carry problem. According to the characteristic of the formation, we optimized polyacrylic acid salt as the water absorbent material, and evaluate salt resistance, temperature resistance and compression resistance. And we discussed the feasibility and recycling of the technology. And we find that this kind of super-absorbent material which can absorb deionized water 1484 times,absorb 0.9% NaCl aqueous solution 687 times,absorb 50% ethanol 705 times, that can meet the water carrying requirements of gas drilling.
Research on the Key to a Successful Construction Special Project-Factor Analysis and Multiple Regressions
Authors: Chen Tung Tsan , Lin Cheng Shih
Published: August 2014

Risks and variables are frequently encountered when executing special projects. If these risks are handled effectively and the variables are controlled with definite and effective manners, the probability of success is enhanced. This study aims to explore and analyze these critical elements and find out the influential factors to success. Findings reveal that at the planning stage of the special project, cost-estimation is deemed the most important element by the overall interviewees; meanwhile, at the stage of deployment, construction costs and administrative management have positive effects on the overall satisfaction level, nevertheless, control-and-guarantee has a negative effective on the overall satisfaction.
Practice and Exploration on the Excellent Curriculum of Processing Technology of Paper Box and Carton
Authors: Yang Yong Gang , Liu Quan Xiao
Published: August 2014

The curriculum construction is a very important work leading to the excellent course. Processing Technology of Paper Box and Carton (including 32 class hours) is a new elective course to the printing engineering in our college. It is very important and necessary to construct the course in time. At first, the current states and difficulties were introduced in the paper, which was that teaching contents, teaching courseware and teacher team should be all improved. Especially, the teaching content proportion on both paper box and carton was set. And then the ideas and ways used for building up the curriculum system are presented as integrating the teaching contents, reforming the teaching mode and strengthening the teaching management. Finally, the significance of carrying out the teaching reform was put forward, and the achievements of course construction should be applied to the usual teaching work. The curriculum Processing Technology of Paper Box and Carton was reckoned as the excellent curriculum of Beijing Institute of Graphic Communication in 2013.
Value Innovation Study in Service Manufacturing Mode
Authors: Cui Qing Yong , Yu Kai Chao , Sun Zhi Jia , Zhang Shu Xin , Wang Xue Fei
Published: August 2014

As manufacturing and service integrate, service manufacturing has been a new trend in the revolution of manufacturing enterprise. Based on value evolution mechanism, this essay puts main efforts in analyzing the elements, structures and development trend of service manufacturing, and advances a three-layer value chain model based on service production activities, productive service activities and customers' all way participation. Lastly, this essay establishes a three-layer value-added model of service manufacturing value chain, and puts forward six key factors to realize value-added of service manufacturing value chain.
Implementation of a Controlling Scheme Used in a Training System of Cockpit Instruments
Authors: Wu Wei , Zhang Yi
Published: August 2014

A scheme of controlling data on a training system of cockpit instruments is presented to meet the need of education and teaching for colleges. A training system of cockpit instruments is established based on this scheme. The system consists of three parts: dashboard, aircraft instruments and operate-controlling subsystem. It has been completed. The advantages such as high reliability, easily operating and low cost make this system have a broad market prospect.
Research on Network Teaching Platform Construction Supporting Personalized Learning
Authors: Wei Dan Dan , Qiu Le Xing
Published: August 2014

According to the existing problems by investigating the present situation of the traditional network teaching platform construction, this paper designs the network teaching platform function module for adapting to modern learning needs in micro era and providing some constructive suggestions for the construction of digital campus.
Research on the Flexible Simulation Model Framework Based on Components
Authors: Ye Dong , Xu Jun Qiang , Wang Yong Gang
Published: August 2014

—According to the foreign and domestic experiences about the design work and the practical application effects of the simulation model components’ framework, it’s obviously concluded that this design pattern of the components framework has broad development prospects in the future. The components are some independent software units with specified functions. This paper presents some useful analysis and research work on the design of the simulation model framework based on component technology.
Research on the Tool Management System Based on Web
Authors: Deng Fei
Published: August 2014

The tool management is an important part in FMS (the flexible manufacturing system), especially for single or small batch processing operation plan. The scientific rationality of the tool management determines the manufacturing system reliability and production efficiency. To establish a set of tool management system based on Web, make the tool entity information of manufacturing execution system to be digitized, and realize the information sharing in the different processing unit or between enterprise alliances through the Internet, will greatly improve the production efficiency and reduce the production cost.
Multi Strategies-Based Resources Recommendation in Learning Team
Authors: Gong Lin , Zhang Zi Jian , Xie Jian
Published: August 2014

Learning team has become an important foundation for collaborative work. In a team, according to the knowledge of members and task requirements, how to recommend learning resources to the appropriate team member is a key factor of success. This paper firstly reviewed related methods and concepts in knowledge management and recommendation. Then, it constructed different models for task, knowledge, team member and learning resource. The two strategies of resources recommendation were proposed. One was based on similarity measurement and another is based on knowledge background and experience of team members. Based on the two strategies, learning resources were recommended to team members. Finally, the prototype system was built for practical validation.
Based on the Integration of Power Grid Topology Model of Distribution Network Fault Analysis Applications
Authors: Yao De Quan , Tao Yong , Yu Hao Ran
Published: August 2014

On the basis of grid GIS platform, in the distribution network repair platform implementation is based on the integration of power grid topology model of distribution network fault analysis mechanism, a combination of customer information, grid electricity equipment operation information such as all kinds of information, the cause of the problem of fault repair service to provide intelligence, integration judge method, improve the accuracy of the fault forecasting speed, the fault information, improve the efficiency of fault repair, shorten fault repair time, reduce the loss of electricity, improve customer satisfaction.
Research on the Characteristics of Electromagnetic Radiation in the Impact Damage Process of Coal
Authors: Wang Jin Gui , Zhang Su , Ai Li Hao , Sun Ying Feng
Published: August 2014

The damage process of coal is often accompanied by electromagnetic radiation. Researches on the characteristics of electromagnetic radiation in the impact damage of coal are significance. Due to the presence of background noise of environment and instrument. The acquisition signals contain noise. So noise reduction is also important. Using split Hopkinson pressure bar (SHPB) and transient ZDKT-1 type magnetic vibration test system, we acquisition electromagnetic radiation signal in the process of impact damage of coal. By using Hilbert huang transform (HHT),we reduced the noise in the original signal. Then we analysed the characteristics of electromagnetic radiation signal after noise reduction. It is demonstrated that: (1) It can get good noise reduction effect for electromagnetic radiation signal by HHT method.(2) The characteristics of signals show that straight line rises in the beginning, index decreases in the middle, and small oscillation occurs in the end.(3) The duration of electromagnetic radiation signal are less than 2 s , and the frequency are 0 ~ 40 Hz. (4) The amplitude of signals increase with impact velocities.
Analysis and Numerical Simulation of Flow Field in Centrifugal Pump
Authors: Zhou Yi Jun , Xu Hai Yang , Kan Wang
Published: August 2014

The inner flow field of centrifugal pump is complex and presents a characteristic of three-dimensional turbulence. Used Solidworks software to establish a three-dimensional model of the pump and impeller, completed the numerical simulation of centrifugal impeller flow field based on the turbulence model and Fluent software, obtained the static pressure and velocity distribution of flow field, provided basis for the design and optimization of the subsequent product.
The System of Water Pressure Detection
Authors: Wu Xue Feng , Fan Yu
Published: August 2014

An application of intelligent pressure detection and alarm system are studied in this paper . it is consists of the high integration, powerful function new microprocessor control, the internal integration of a large number of analog and digital peripheral module. The system has strong data processing ability. multifunctional intelligent hardware is not only realized in circuit necessary configuration,but also is a small size device. it ensure the intelligence function,and has the advantages of small volume, low cost, integration and strong anti-interference ability .
Analysis and Troubleshooting of the Hydraulic System about Bicycle Assembly Line
Authors: Yang Hong , Yu Xiao Guang , Xu Ze Ning , Xu Ming
Published: August 2014

This paper analyzes hydraulic system of the bicycle assemply line,Aiming at the problem of the hydraulic system pressure not up to design standard when there is only a hydraulic pupm in the oil supperly system. Put forward to replaced two throttle valves by two check valves. The results show validity of the method.
Experimental Study on Novel High Density and High Temperature Tolerant Fracturing Fluid
Authors: Xiao Bo , Ma Rui
Published: August 2014

Based on weighted agent sodium chloride, this study introduces a high density and high temperature tolerant fracturing fluid. According to the evaluation of the effect of weighted agent on the performance of base fluid and crosslinked fluid, conclusions can be got as follows. Introduction of weighted agent provides an auxiliary viscosity enhancement of the base fluid to some extent. Meanwhile, the crosslinked time is prolonged and gel breaking becomes more difficult owing to the interference effect of metal ions exerted on the crosslinking process between molecular chains of guar and crosslinker. Moreover, the experiments show that the novel fluid system has a strong tolerance of high temperature and high shearing rate. The viscosity of the fluid system with 15% weighted agent sodium chloride can maintain 160 mPa•s after 120 min shearing at 170 s-1under the temperature of 150 °C. The excellent performance of the fluid system ensures it has a good stimulation effect in the fracturing treatment in the deep and high temperature formation stimulation treatment.
Spray Cooling Rate Model of Heavy Cylinder Rolling
Authors: Zhang Yong Zhen , Sun Jian Liang , Peng Yan , Liu Hong Min , Chen Su Wen
Published: August 2014

In order to eliminate the mixed crystals of the thick-walled heavy cylinder after rolling and improve the quench shortage of tank copious cooling, it is significant to analyze the cooling capacity of spray cooling and tank copious cooling. Models of heat transfer coefficient about spray cooling and copious cooling were established. The quenching process simulation was made based on the DEFORM software. The cooling rate models of center part about spray cooling and copious cooling were build. According to the CCT curves of heavy cylinder material and simulation results, which show that: (1) Using spray cooling can increase the cooling rate of center part to some extent and improve the mechanical properties. (2) The maximum capacity of spray cooling is 280mm, that is the microstructure of center part fully transfers to bainite, which is 50mm larger than copious cooling.
Stress State of a Thick-Walled Cylindrical Shell under the Combined Action of Radiation and Temperature Field
Authors: Andreev Vladimir I. , Kapliy Daniil A.
Published: August 2014

There is a solution of the problem of stress-strain state determining in a concrete thick-walled tube, when the temperature field and the neutron fluence at the inner face are set. The mutual action of the specified factors is identified in this axisymmetric problem, as well as influence of inhomogeneity of shell materials, which is due to radiation and heat impact. The problem reduces to a differential equation with variable coefficients. The allowance for the mutual action of the specified factors and the variable Young’s module lets to arrive to a more accurate solution.
Research on the Effect of Seasonal Environmental Loads on Bohai Bay Offshore Platform
Authors: Liu Gui Jie , Farooq Basit , Jiao Jian Bo , Wang Li Hua , Zhang Yu
Published: August 2014

In recent decades jacket platforms are widely used for facilitating the offshore oil industries in order to reach their demands of producing oils. In this regard given analyses shows the influence of seasonally based environmental loads acting on the offshore platform structure situated at Bohai Bay northeast of China. This paper studies and summarizes the structure reliability theory with jacket platform as the research object; it is the first time to aim and finds the most dangerous season effecting Bohai Bay offshore platforms by considering seasonal environmental loads. Finite element analysis ANSYS software is used for model analyses and optimisation of the structure spatial correlation seasonal loads. Environmental design data is extracted according to its geographical conditions in the form of wave, wind and current forces. Since most of the control management nodes work below the surface of the water so the distribution of stress and fatigue life of the pipe node under multi-axial loading is in different forms. The analysis mainly focuses on the stress and fatigue life appropriate characteristics to the actual situation of multi-axial loading case of the K-joint welding location and mainly environmental effect on the platform.