Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Computer science. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

QSPR research on thermodynamic properties of polychlorinated diphenyl ethers

Abstract: Polychlorinated diphenyl ethers(PCDEs) are listed as the so-called persistent pollutants.Atomic characteristic values of all 209 possible molecular structure patterns of PCDEs were calculated,then a new connectivity index,orientating corresponding index was calculated with the technique of molecule graphics.The orientating corresponding index was combined with five observed thermodynamic properties of PCDEs,i.e.molecular mean polarizability,standard enthalpy,free energy,heat capacity at constant volume and standard entropy,and fifteen quantitative structure-property relationship(QSPR) models(r0.99)were obtained with the unitary linear regression method,and the relative mean deviations were 1.02%,0.48%,0.48%,0.22% and 0.90%,respectively.In order to test the stability and prediction ability of each model,the jackknifed cross validation was performed and good results(r0.99)were obtained.These models can better elucidate the change of the thermodynamic properties for the PCDEs,and the QSPR models have satisfactory stability and good predictability.

Simple Rotary Inverted Pendulum and the Control Device

Abstract: Inverted pendulum control system is a complex, nonlinear, unstable system. This design on the basis of studying the law of motion of the inverted pendulum, build its trajectory mathematical model, using MATLAB simulation analysis, after understanding of inverted pendulum model, use k60 micro controller combined with PID algorithm gives the signal driven dc gear motor, and then to control the inverted pendulum system, used in the process of standing on your head swinging rod Angle encoder acquisition, processing, the Angle of swinging rod feedback on point of view, the direction of the angular velocity, the motor running direction, adjusting handstand pendulum rod by using PD algorithm, PI parameters to adjust motor speed, by double circuit PD/PI control scheme realizes the rotating arm swinging rod Angle and position closed loop control at the same time.

Effect of High Oxygen and High Carbon Dioxide Atmosphere Treatment on Senescence of Postharvest Green Asparagus

Abstract: The effect of modified atmosphere package(MAP)with high oxygen at different concentrations and high carbon dioxide(20%)on the sensory quality,lignin content,the activities of superoxide dismutase(SOD),catalase(CAT)and polyphe-nol oxidase(PPO)and total phenol content of green asparagus spears during storage at(4±1)℃were studied using ambient atmosphere as a control.Results indicated that package with oxygen at concentrations of over 60%and 20%carbon dioxide could delay the deterioration of sensory quality,the decline of total soluble solid and total polyphenol content,keep the activities of SOD and CAT and inhibit the increase of PPO activity.The green asparagus packaged in 80%O2+20%CO2 showed the best storage quality.As a conclusion,the atmospheric condition will have potential application prospects in delaying the postharvest senescence of green asparagus.

Improved Hierarchical Convolutional Features for Robust Visual Object Tracking

Abstract: The target and background will change continuously in the long-term tracking process, which brings great challenges to the accurate prediction of targets. The correlation filter algorithm based on manual features is difficult to meet the actual needs due to its limited feature representation ability. Thus, to improve the tracking performance and robustness, an improved hierarchical convolutional features model is proposed into a correlation filter framework for visual object tracking. First, the objective function is designed by lasso regression modeling, and a sparse, time-series low-rank filter is learned to increase the interpretability of the model. Second, the features of the last layer and the second pool layer of the convolutional neural network are extracted to realize the target position prediction from coarse to fine. In addition, using the filters learned from the first frame and the current frame to calculate the response maps, respectively, the target position is obtained by finding the maximum response value in the response map. The filter model is updated only when these two maximum responses meet the threshold condition. The proposed tracker is evaluated by simulation analysis on TC-128/OTB2015 benchmarks including more than 100 video sequences. Extensive experiments demonstrate that the proposed tracker achieves competitive performance against state-of-the-art trackers. The distance precision rate and overlap success rate of the proposed algorithm on OTB2015 are 0.829 and 0.695, respectively. The proposed algorithm effectively solves the long-term object tracking problem in complex scenes.

Anticorrosion Property Study on the Hard Chrome Plating Layer of Hydraulic Cylinder Rod

Abstract: The hydraulic cylinder is the essential component in the construction machinery, and the quality and safety of construction machinery products depends on its performance. As the main part of the hydraulic cylinder rod, the quality and reliability are the key indicators of the hydraulic cylinder. In this paper, the hard chrome plating layer of hydraulic cylinder rod was tested by metallographic analysis, surface morphology observation, hardness test, corrosion resistance experiment, in order to evaluate the anticorrosion, economy and technology of the electroplating technology, and discuss the anticorrosion mechanism, so the experimental and theoretical basis will be provided in the field of production. The contribution will be made by improving the corrosion resistance and wear resistance, increasing the operational reliability, extendeding service life of the hydraulic cylinder rod.