Abstract:

Abstract: In this paper，a method waspresented to determine the bandof gamma oscillation，and the eharac— teristics of the gamma oscillation response to simple graphics with different topologies wasexplored．First，the method combining wavelets transform and power spectrum wasadoptedto determine the accurategamma band range of the localfield potentials in rat’S primary visual cortex．Secondly，the latencyperiods ofgamma oscillation for simple graphics stimuluswith different topologies were calculated andthe curves of mutual informa．tionbetween the stimulus sequences andpower spectrums in gamma bandwere estimated．The means，maxi．mumvalues and the frequencies at themaximumvalues ofthe curveswereextractedas the feature parameters．Finally，these characteristics were analysed statistically with one—way analysis of variance．The experiment re．suits showthatundervisual stimulations the gamma-bandoscillations exist obviously in the primary visual cot．tex(V1)ofanesthetized rat．The gamma oscillations were significantly selective to the topological features of simple graphic stimulations．

Abstract: Withwide application ofpower cable in transmission anddistribution systems，the demandforcable fault location accuracy is improved．In orderto locate cable fault accurately，thewavelet transform is appliedin detectingthe travelingwave signal of power cable．According to the principle of singularity detection of signals，the travelingwave starting pulse andreflection pulse time point is determined bysearchingmodulusmax— imum，andthen locatingbysingle terminal travelingwavemethodforthe online fault location．The experimental results show that the traveling wave singularity point can be detected by using localized time——frequency characteristic of wavelet transform，thereby the accurate time of pulse arrival is obtained．This method is not affected by fault type andthe range error is small，which can achieve ahigher fault location accuracy．

Abstract: In order to make the evaluation index weight more reasonable，and achieve the reasonable predic-tion of the remaining life of the power transformers, this paper used three - scale method to construct judgmentmatrix , and combined the line normalization method with eigenvector method to achieve the improvement of thefuzzy analytic hierarchy process.This method is applied to the transformer remaining life assessment model,has improved the objectivity and rationality of the judgment matrix，and enriches the basis for this assessment,the results of the assessment are more accurate and have the practical guiding significance.

Abstract: In order to enhance performances of energy saving and comfort of a lighting system , some intelligentcontrol strategies are discussed to get the best combination of natural light and lighting fixtures as to indoorlighting. Based on the solar altitude angle and the window azimuth，the solar altitude angle of the position ofthe human eye can be calculated ， and the eurtain adjustment model is built here , thus the requirements of eyescomfort will be met by adjusting the position of the electric curtain. When the natural light is insufficient，it isneeded to open the lamp to fill light. The best combination of lighting fixtures luminance is solved out by useof the improved particle swarm optimization，hence realizing the comprehensive optimum of comfort and ener-gy-saving. Finally，the effectiveness of strategies of control is verified by the simulation of actual offices mod-el.

Abstract: In view of the impact of metro traction power load on the urban network ， according to the pre-designdata and the short 、 mid and long-term metro transit scale of Zhengzhou metro transit line 1 and 2， this paperused the average volume method to obtain the transit supply power by specifically quantum calculation ， and theload forecast can be got with linear regression method. Finally，the evaluation of the impacts of Zhengzhoumetro traction power supply system to urban distribution network can be achieved. The analysis showed thatthe contribution rate of rail transport electricity to the distribution network is about 2% , and the rail transitpeak load with urban network peak load does not overlap, so the impact of Zhengzhou rail transit system elec-tricity grid is very small. Its conclusions can provide a reference for the network planning in Zhengzhou.

Abstract: This paper introduces a novel control design of gamma knife positioning bed.Respiratory move-ments would inevitably cause tumor displacement. In this design，tumor displacement model produced by hu-man respiration was established through BFCS algorithm. Firstly , piezo sensor was used to collct respiratorysignal.Secondly, in order to make the positioning bed move by reverse respiration，after receiving the respira-tory signal，single chip microcomputer ( SCM) system would control stepping motor. The simulation experi-ment results showed that this design can reduce the influence of respiratory movements on the precision of ra-diotherapy，which produces a novel method and theoretical basis for the control of gamma knifepositioning bed.

Abstract: We investigate the electric fielddistribution around ferromagneticnanoparticles(NPs)inferrofluids underthe infuenceof external magneticfield．Specifically，magneticcore(cobalt)coated with a metallic lay．er(gold)isconsidered，which incorporated optically actively component with magneticNPs．Due to the magnetic response，the core／shellNPswill alignalong the direction of external magnetic field，thus forminga linear NPschain in the system．With the solution of Laplace’S equations，electric fields inside andoutside the NPschain are explored as a function of the incident wavelength operatingonthe basis of mutualinteraction a— mongthe polarizedparticles．Analytical study showsthat themaximummagnitudeof the electric filed is closely related to the resonant incident wavelength．the metallic shell thicknessandthe inter．particle distance．

Abstract: Taking the extraction rate as the indexes，the optimal extraction processing conditionswereexplored by the single—factor experimentand the uniform design experiment．The kernel of cornus officnalis wastreated 6minunder the condition ofmicrowave radiation before extraction process wasdone by acetone as the extrac．tion solvent．The optimum conditions werefound to be water—bath temperature of 70．5℃．extracting time of 75min andliquid—solid ratio of 12 mL／g．Thecomponentsextractedweremainly linoleic acid，oleicacid，pal．mitic acid，etc．byGC—MS．The results provide reference for exploiting and utilizting active ingredients for the kernel ofcomus omcnalis．

Abstract: Aluminaredmud has not been utilized effectively due to its highemission andstrong alkaline．In— dustrial flue gas whichhas high S02 should be desulfurized to meet up to the standards．The mineral component，chemicalcomposition，grain sizeandmicrostructure ofalumina redmud from Henan BranchofChinaAluminum Co．were determined in this article．The orthogonal experiments and single factor experiments have been done in the self—designed 1700×60mmglass absorption device which accessories were installed in the laboratory．The influential factors such as liquid-solid ratio，flue gasflow，and liquid—gas ratio were examined throughthe orthogonal tests．The optimal conditions：liquid—solid ratio is 7：1(kg／kg)，fluegas flow is 3．6 m’／h liquid-gas ratio and 12 L／m3．Under these conditions．the maximum efficiency ofFGD is more than 95％．At the sametime，compared with the currentlimestone—gypsum wetmethod，underthe same conditions redmudhas a better absorption effects．

Abstract: Zeolite L was synthesized by using silica aerogel and potassium aluminate as raw materials and shortcarbon chain saturated alcohols as additives. The effects of methanol，ethanol，isopropanol，butanol，glycoland glycerol on the erystal size and crystal morphology of zeolite L were investigated systematically.Particlesize of zeolite L synthesized without adding additives was small and crystal morphology was flat eylinder. Whenadding small amount of various alcohols，the crystal morphology of the product was flat clam， the crystallinitywas high and particle size of zeolite L increased obviously. Increasing ethanol amount in a certain range，thecrystallinity was decreased and zeolite L with different shapes was obtained.

Abstract: In thispaper，the effect ofmass fraction of K·Resin with the range from 10％to50％onthe optical andmechanical properties of polystyrene(PS)／K—Resin wasstudied by melting mixing method，and the surface morphology of the cross-section of impact sampleswere analyzed withSEM．The results showthatwith the increase of K-Resin’S mass fraction from 10％to 50％，the haze of PS／K-Resin alloy can be decreased to 11％from24．6％while the transmittance is almost the same as pure PS．only change from 86．5％to 85．6％．indicating that the optical match of PS and K·Resin is good．The results of mechanical properties and SEManalysis show that with the increase of K·Resin’S mass fraction in the alloy，the impacttoughness of the alloy material and the elongation at breakgenerated by tension both increase，the impact toughnesscan be increased to 4．65 kJ／m2 from 1．93 kJ／m2 andthe elongation at break generated by tensioncan be increased to 14．5％from 1．5％．showinganobvious plastic deformation morphology．

Abstract: Abstract: Porous Co3O4 nanoplates prepared with a one-pot hydrothermal synthesis method were synthesizedby calcining the precipitates Co( CO3)0.5,( OH)·0.11H2O at 400 C for 2h.That crystal structures and mor-phologies both of the precursors and products have been characterized with X-ray diffraction ( XRD),field e-mission scanning electron microscopic ( FESEM),high-resolution transmission electron microscopic ( HR-TEM). Electrochemical properties of the Co3O4 nanoplates were carried out using cyclic voltammetry,gal-vanostatic charge-discharge measurements and electrochemical impedance spectroscopy. The results showedthat the porous Co3O4 nanoplates had the thickress of about 50 nm,pore sizes about 10 nm and exhibited highspecific capacitances of 707 F/g at 0.5 A/g and 547 F/g at 8 A/g. Furthermore,the specific capacitance ofthe materials was 97.4% after cycling for 1000 times.

Abstract: In view of the temperature characteristics of water wall in 350MW supercritical pressure boiler ofLinzhou thermal power plant，the temperature fields of rectangular fins water wall were numerically studied bythe finite volume method ， and the spiral membrane water-wall temperature in the lower furnace was analyzed.According to the calculation results，temperature of spiral water-walls increases with the increase of the heightof furnace. The highest temperature，which occurs at the facing flame outer of water wall tube or the fin’send，is less than 440 C and does not exceed the permitted value of the metal. Both the highest temperatureand the maximum temperature difference increase with increasing the furnace load. As the thermal deviationcan be effectively reduced by using spiral water-wall，the temperature of water-walls and the temperaturedifference of working medium between each tube are very small along the width direction of the furnace.

Abstract: Flue gas waste heat of utility boiler was calculated.Based on flue gas as heat source and R245fa asworking fluid，thermodynamic analysis was carried out to waste heat power generation，and the optimal opera-tion parameters and generating capacity were determined.RETScreen was applied to analyse the investment in-come and benefit analysis of energy saving and emission reduction. The results show that generating capacity ofwaste heat unit is 47 ,502 MWh/a， the emission reductions of CO, is 42,419 ta. Under the condition of ini-tial investment costs 6,500 RMB/ kW and debt ratio 65% , equity payback only needs 1.1 years ， energy pro-duction cost is 0.14 RMB/kWh，CHG reduction cost is 291RMB/tCO,.During operation period of 30 years,the cumulative cash is expected to be 431 million RMB.

Abstract: In this paper, the multi-reference frame(MRF ) and standard h - s turbulent model were used tosimulate the flow pattern and mixing characteristics in the stirred tanks with double layer straight impeller,double 45° inclined impeller and double layer straight and inclined combined impeller. The results showedthat double layer combined impeller can enhance the turbulence and mixing of the upper fluid and lower one inthe stirred tank.Moreover,compared with the double layer straight impeller， double layer combined impellercan save 37.91% of stirring power and reduce 50.48% of mixing time. Furthermore , compared with the feed-ing patterns from the fluid surface and the lower blade, the feeding pattern from the upper blade can obviouslysave the mixing time and improve the efficiency of mixing.

Abstract: Based on heat transfer theory with phase change of multilayer board，thermal analysis was imple-mented for metal honeycomb sandwich plate with finite element method ( FEM).The research of phase changeproblem undexr high temperafure load was carried out.The computing results show that honeycomb sandwichplate has good heat insulation performance， the maximum tcmperature difference was more than 450 ℃ bc-tween the inside and outside surface;temperature field distribution in the honeyeomb core layer is not com-pletely identical to the other four layers ; it is different that each layer is influenced by the internal devices ; theouter skin begins to form the solid-liquid phase change after loaded 18s，the outer glue starts to produce solidliquid phase change aiter loaded 11s , and has already large area of gas-liquid phase transition to 14s , damagearea and damage degree are increased continuously. It has been better simulated with FEM that temperatureficld distribution laws，phasc transition failure process and its cvolution of thc complcx strucetures under hightemperature load.

Abstract: The maximum nominal particle size of large size asphalt mixture is generally greater than 26.5 mm.The asphalt mixture paving thickness is up to 12 ~ 18 cm.The construction technology of the large size asphaltmixture especially compaction technology are quite different.The paper evaluated the cooling law of differenttypes of large size asphalt mixture using the indoor simulated cooling temperature test. The results show thatlarge size asphalt mixture surface cooling rate was greater than HMA，temperature difference between the sur-face and the middle of the mix can reach 15 ~ 25 ℃， and then keep the surface temperature until the rollingfinishing temperature ,thus extending the effective compaction time;the large size asphalt mixture paved thick-ness larger ，thermal energy storage longer，and no sensitive to temperature segregation than the normal asphaltmixture. The environment temperature and paving thickness of large size asphalt mixture have a great influenceto cooling law ， while the gradation type of impact is relatively much smaller.

Abstract: To investigate the nonlinear vibration characteristics of high-voltage transmission conductors causedby geometrical nonlinearity ， the 3D dynamical equations of the horizontal suspended transmission conductorsare derived through the expanded Hamilton ’s principle. Then the equations are reduced to 2D dynamical e-quations and are diverted into a set of ordinary differential equations through Galerkin procedure by assuming amodel deflection shape. Coupled out-of-plane and in-plane responses of the conductors under harmonic exter-nal excitation are studied by means of fouth-orderRunge-Kutta method. The results show that the nonlinearityproduces the primary resonance，the subharmonic resonance and the superharmonic resonance. Energy transi-tion phenomena may take place between out-of-plane vibrations and in-plane vibrations because of the internalresonance due to closely spaced natural frequencies. When the out-of-plane vibration is initiated， the in-planevibration can be excited and the response is periodic，changing the natural vibration characteristics of the sys-tem simultaneously.

Abstract: Abstract:Based on acoustic models, the fluid can be modeled as an acoustic medium,discretized with acous-tic elements,and the free surface of the fluid must be ’skinned’ with membrane elements,and a groundedspring is attached to each node on the free surface of the fluid.Using the finite element package ABAQUs,weestablished the finite element model of 3D liquid sloshing in rectangular tank,analysed the eigenfrequenciesand the modals of liquid sloshing,and the numerical results were compared with analytical solution.The re-sults show that,by ABAQUS numerical simulation with high precision,this work illuminates the availabilityand reliability of the proposed method,which provides a new analysis method for the study of dynamic analysisof 3D liquid sloshing. Finally,the author analyzed the shaking frequency and liquid depth,width of the rela-tionship of such systems with different liquid height to width ratios considered.

Abstract: This paper is intended to analyze the influence of dosages of asphalt emulsion on the mechanicalperformance of cement mortar.Different mass percentages of asphalt emulsion and cement (AE/C) were ap-plied to make asphalt emulsion cement mortar. The compressive strength and flexural strength of asphalt emul-sion cement mortar were tested. Finally,mechanism of asphalt emulsion on mechanical performance of cementmortar was analyzed by scanning the microscopic structures using scanning electron microscope ( SEM). Theresults show that when the content of asphalt emulsion is more than 5 %,compressive strength of the mortardecreases significantly while the flexural strength increases. When AE/C comprises 10% , the mortar showsthe greatest toughness. Asphalt emulsion dosage is a main factor that affects the mechanical performance of ce-ment mortar. When the thickness of asphalt film is larger than the length of hydrated calcium silicate ( C -s -H),cement hydration products neither grow through the asphalt membrane nor form a continuous networkstructure，which leads to lower toughness of the cement mortar.

Abstract: In the durability evaluation of bridge,certainty factor of index ’s relative importance of differentexperts ’evaluation is related to experts’ research experience.Firstly,according to the similarity theory ofvector,the similarity of the relative importance matrix of different experts is studied to determine experts ’certainty factor in this paper; secondly,using different experts’ indeterminate judgment matrix and randomtheory,the random value in the interval of relative importance index is used to form many judgment matrix,and different weight coefficients are obtained according to the above judgment matrix ; lastly , different experts ’certainty factors and weight coefficients are considered together,weighted average of different experts’ weightcoefficients is the final index weight value. Thus,the subjectivity of different experts is reduced and the evalu-ation conclusion is more credible,the research result showed that the computation accuracy in this paper wasvery high.

Abstract: In order to invent asphalt mixture with the function of automobile exhaust photocatalytic,we useTPS to product high viscosity asphalt,adopt OGFC - 13 to be structure vector, set up the concept of gas con-centration update -N,make asphalt mixture with different dosages of nanometer ’Tio2 to be test by its own re-search of test system. The optimal mixing amounts of nanometer Tio2 was confirmed also with its influence tothe performance of asphalt mixture. The results show that TPS high viscosity asphalt has the function of reduc-ing the loss caused by mix with nanometer Tio2. It shows well positive correlation between the dosage of nano-meter Tio2 and the photoeatalytic performance to C0 and HC of mixture. Asphalt mixture with automobile ex-haust photocatalytic and excellent pavement performance with TPS and nanometer Tio2.

Abstract: With wide application of power cable in transmission and distribution systems, the demand for cablefault location accuracy is improved. In order to locate cable fault accurately,the wavelet transform is applied indetecting the traveling wave signal of power cable. According to the prineiple of singularity detection of sig-nals,the traveling wave starting pulse and reflection pulse time point is determined by searching modulus max-imum,and then locating by single terminal traveling wave method for the online fault location.The experimen-tal results show that the traveling wave singularity point can be detected by using localized time - frequencycharacteristic of wavelet transform,thereby the accurate time of pulse arrival is obtained. This method is notaffected by fault type and the range error is small,which can achieve a higher fault location accuracy.

Abstract: Smart poster is one of the main application of NFC( Near Field Communication) technology,whilethe security of its payload is concerned by all users. First,the security problems of the NFC tags and smartposters are discussed in the paper. And then the Campus Smart Posters Reservation System (CSPRS) is pro-posed in the paper,which uses NFC tags and NFC record types to form the smart poster NDEF message forreservation. The RSA encryption scheme is used to signature the smart posters payload and the implementationflows of reservation information reading and writing modules are described in detail in this paper.

Abstract: This paper proposes a new method of the key frame extraction aiming at reducing storage and fastretrieval of the surveillance video.First,an improved background subtraction is used to detect the key videosegment which contains the moving objects,and record the first frame and the last frame of the segment.Thenthe key frames are extracted coarsely in the video segment based on the joint histogram. Finally,according tothe continuity of the key video frames,we further refine the key frames by image information entropy. The ex-perimental results show that the method can extract the key frames of the surveillance video effectively.Itgreatly reduces the storage of the video data,and helps the users to browse key information easily.

Abstract: Tdifferent modeling objectives,characteristics,the sparse coding models for simulation of the visual system are classified into the following sixcategories ,those are maximum likelihood models,the optimization models of the objective functions,the func-tion model of Gabor wavelet basis,super-complete basis models,the models of neural networks,and the levelsparse coding model. In accordance with learning methods for models, the statistical analysis models are divid-ed into independent analysis models,non-negative matrix factorization models,as well as specific characteris-tics of sparse coding models. All the various models are introduced,analyzed and studied,the main featuresof different models are Summarized and compared,and their future prospects are proposed.

Abstract: In view of the difficulty in establishing precise nonlinear water quality forecast model using the tradition-al method,the paper proposed the short-term forecast model of the water quality using the weighted support vectorregression machine based on the particle swarm optimization ( PSO-WSVR). According to the importance of thesamples are significantly different，the authors proposed the penalty coefficient for the every sample to differentweighted values and improved the standard support vector regression algorithm to avoid different samples using thesame weight,which may cause the low prediction accuracy.The parameters combinations of the weighted supportvector regression machine were adaptively optimized using particle swarm optimization algorithm, which the conver-gence rate could be sped up significantly.The water quality of crab intensive aquaculture in Yixing,Jiangsu waspredicted using PSO-WSVR model. Compared with forecasting result of the standard support vector regression andBP neural network,the forecasting result of PSO-WSVR have reliable performance, generalization ability,and highforecast precision, so it provides a new way for short -term forecasting of the water quality in intensive aquaculture.

Abstract: The adsorption property of magnesium hydroxide modified zeolite for Methyl Orange ( MO) in aque-ous solution was studied. The adsorption curves were analyzed at different MO concentration and adsorptiontime using pseudo-second order kinetic equation,Elovich equation. The kinetic adsorption mechanism wasstudied.The result showed that the adsorption of MO on Mg(OH),/ zeolite is a complex heterogeneous dffu-sion chemical adsorption process. The intraparticlar diffusion equation indicated that the adsorption rate of MOwas controlled by the combination of film diffusion and intraparticle diffusion.

Abstract: A set of simulation device of the water distribution networks is established for imitatting water ageand quality. In comparison with the realistic water quality,the results show that the effluent parameters of thesimulation device is closely similar to the realistic water,and it supplied a fast and convenient method for sim-ulating and detecting the water parameter in the distribution networks. Using this device,the effect of turbidi-ty,water age,dissolved oxygen and conductivity on iron release were studied,and in combination with thewater quality investigation of the distribution networks and geographic information system of Z city,the riskrange of the“red water"was predicted.

Abstract: This paper compared the principles and methods of 6 model and improved DOS model for atmos-pheric radiation correction,to select more excellent atmospheric radiation correction method based on TM im-age. We select visible TM1,TM2,and TM3 bands of land satellite 7th TM remote sensing image,respectivelydiscussed atmospheric radiation correction and reflectivity inversion based on 6S model and improved Dosmodel. The research result indicates that: the improved DOS model is better than 6S model radiation for radio-metric correction effects,the surface inversion is more accurate,easier to operate and more acceptable. ForTM images,improved DOS model is a better method of atmospheric radiation correction.