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Tian D.,Beihang University | Tian D.,Key Laboratory of Urban ITS Technology Optimisation and Integration | Zhu K.,Beihang University | Zhou J.,Beihang University | And 3 more authors.
IET Intelligent Transport Systems | Year: 2015

A novel model is proposed to formulate the mobility of multiple vehicles with inter-communications moving together as a swarm. This model is inspired by the aggregate motion of social force, and is used to describe the self-organised behaviour of the vehicle swarm in vehicular ad hoc networks. To validate and analyse the proposed model, some simulations are performed in different traffic scenarios, such as the low traffic density with high mobility and the high traffic density with low mobility. Two comparative simulation cases are also provided to explore the effect of vehicular communications on the mobility of multiple vehicles. The simulation results prove that the model can well formulate the cooperative behaviours of multiple vehicles with vehicle-to-vehicle communications in inter-vehicle collision avoidance and obstacle-avoidance scenarios, and these results also strengthen that the inter-vehicular communications can enhance the vehicle safety and traffic efficiency. © The Institution of Engineering and Technology 2015.


Li Y.-W.,China Agricultural University | Li Y.-W.,Key Laboratory of Functional Dairy | Li B.,China Agricultural University | Li B.,Key Laboratory of Functional Dairy | And 2 more authors.
Journal of Molecular Structure | Year: 2011

A database consisting of 214 tripeptides which contain either His or Tyr residue was applied to study quantitative structure-activity relationships (QSAR) of antioxidative tripeptides. Partial Least-Squares Regression analysis (PLSR) was conducted using parameters individually of each amino acid descriptor, including Divided Physico-chemical Property Scores (DPPS), Hydrophobic, Electronic, Steric, and Hydrogen (HESH), Vectors of Hydrophobic, Steric, and Electronic properties (VHSE), Molecular Surface-Weighted Holistic Invariant Molecular (MS-WHIM), isotropic surface area-electronic charge index (ISA-ECI) and Z-scale, to describe antioxidative tripeptides as X-variables and antioxidant activities measured with ferric thiocyanate methods were as Y-variable. After elimination of outliers by Hotelling's T2 method and residual analysis, six significant models were obtained describing the entire data set. According to cumulative squared multiple correlation coefficients (R2), cumulative cross-validation coefficients (Q 2) and relative standard deviation for calibration set (RSD c), the qualities of models using DPPS, HESH, ISA-ECI, and VHSE descriptors are better (R2 > 0.6, Q2 > 0.5, RSD c < 0.39) than that of models using MS-WHIM and Z-scale descriptors (R2 < 0.6, Q2 < 0.5, RSDc > 0.44). Furthermore, the predictive ability of models using DPPS descriptor is best among the six descriptors systems (cumulative multiple correlation coefficient for predict set (Rext 2) > 0.7). It was concluded that the DPPS is better to describe the amino acid of antioxidative tripeptides. The results of DPPS descriptor reveal that the importance of the center amino acid and the N-terminal amino acid are far more than the importance of the C-terminal amino acid for antioxidative tripeptides. The hydrophobic (positively to activity) and electronic (negatively to activity) properties of the N-terminal amino acid are suggested to play the most important significance to activity, followed by the hydrogen bond (positively to activity) of the center amino acid. The N-terminal amino acid should be a high hydrophobic and low electronic amino acid (such as Ala, Gly, Val, and Leu); the center amino acid would be an amino acid that possesses high hydrogen bond property (such as base amino acid Arg, Lys, and His). The structural characteristics of antioxidative peptide be found in this paper may contribute to the further research of antioxidative mechanism. © 2011 Elsevier B.V. All rights reserved.


Zhong F.,Military Economics Academy | Wang F.,Hangzhou Non Commissioned Officer Academy of CAPF | Yang H.,Quartermaster Equipment Institute | Zheng D.Z.,Logistics Academy
Applied Mechanics and Materials | Year: 2014

In order to quickly detect the harmful substances in food, a multiple channel portable food safety detector which can be used in the field test is designed. The detector uses the newly national standards and methods, and the combination of Windows CE Operate System and colorful LED touch screen was adopted in this design, changing the operate tool from mouse to fingers, making the operation much more simple and convenient. The result of experiment shows that the system has the advantage such as easy operating, portable, high performance and high reliability. And it can detect Pesticides residue more quickly and accurately, and the measurement error are between ±2% and ±4%, which meets the national standards and its design require. © (2014) Trans Tech Publications, Switzerland.


Zhu J.-Y.,Air force Radar Academy | Zhu J.-Y.,Quartermaster Equipment Institute | Zhou H.,Quartermaster Equipment Institute
Lecture Notes in Electrical Engineering | Year: 2012

Intelligent exoskeleton load system is new concept soldier equipment which takes human as main control subject and takes machine as main power subject. It's a man-machine highly coupled and complex power assist dynamic system. Based on the comprehensive analysis of the domestic and foreign relevant research progress, this paper puts forward the basic realizable way for the design of mechanical structure, hydraulic system and intelligent control of the intelligent exoskeleton load system. © 2012 Springer-Verlag.


Zhang X.,Quartermaster Equipment Institute | Guo H.,Quartermaster Equipment Institute | Chen H.,Beijing Institute of Technology | Gong J.,Beijing Institute of Technology
Proceedings - 6th International Symposium on Computational Intelligence and Design, ISCID 2013 | Year: 2013

How to integrate heterogeneous data is the key problem of IETM. The paper designs the IETM integration framework structure based on XML technology, and then discusses three primary problems: data description, data storage and data parsing. After these research works, heterogeneous data is retrieved more quickly, maintain cost of equipment is reduced, efficiency of equipment is enhanced and the security of information is assured. And at the same time, the most important things are data integration and sharing problems have been effectively solved. © 2013 IEEE.


Guo Q.,University of Electronic Science and Technology of China | Zhou H.,Quartermaster Equipment Institute | Jiang D.,University of Electronic Science and Technology of China
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

This paper has introduced electromechanical coupling characteristics to the lower extremity exoskeleton systems. When the load torque compensation model has been established, A model of knee position control system has also been established, which is made of the servo valve, hydraulic cylinders and other hydraulic components. Hydraulic cylinder position control loop has been designed in case of existing load force interference compensation. From that have ensured the system to meet a certain stability margin. The simulation shows that this position control method can servo on the knee angular displacement of normal human walking, at the same time, met the needs of human-machine coordinated motion. On basis of 30kg walk test of prototype of system, analyzing hydraulic cylinder bearing demand under different load conditions. The test shows that the lower limb exoskeleton portable power system using a hydraulic valve position control can meet the load 30kg low level walking requirements. © 2012 Springer-Verlag.


Zhu J.-Y.,Quartermaster Equipment Institute | Zhou H.,Quartermaster Equipment Institute
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012

With firstly analyzing the working principle of wearable exoskeleton robot, and building a mathematical model ,this paper applies the method of Particle Swarm Optimization with MATLAB software to develop a set of optimization design system for three-hinge mechanism of knee, which substitutes artificial design system. Furthermore, this paper puts forward the optimization design method based on Particle Swarm Optimization for the three-hinge mechanism design of multi-objective and multi-constraint conditions, which can be effectively solved through simulation practice. Finally use Adams to check out the results. © 2012 Springer-Verlag.


Zhang X.,Quartermaster Equipment Institute | Guo H.,Quartermaster Equipment Institute | Li Y.,Quartermaster Equipment Institute | Yang H.,Quartermaster Equipment Institute
Proceedings - 2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer, MEC 2013 | Year: 2013

Equipment information needs to be shared and exchanged in the heterogeneous systems. The traditional database did not adapt the new requirement. How to effectively manage the massive XML data is a problem to be solved urgently. The characteristic and advantage of data integration technology based on Native XML Database (NXD) were analyzed. A data management system of the equipment information based on NXD technology was proposed, and the system functions, architecture and key technologies were studied. In paper three primary technologies were discussed: data module, information storage and information interaction. After these research works, heterogeneous data is retrieved more quickly; efficiency of information management is enhanced and the interoperation of information is assured. And at the same time, the most important things are data integration and sharing problems have been effectively solved. © 2013 IEEE.


Hao L.,Quartermaster Equipment Institute | Hao L.,Tianjin University of Science and Technology | Sheng Z.,Tianjin University of Science and Technology | Lu J.,Zhengzhou University | And 2 more authors.
Carbohydrate Polymers | Year: 2016

Fomitopsis pinicola (F. pinicola) is a kind of medicinal fungi, and few studies has been carried out on F. pinicola polysaccharides from liquid submerged cultivation. The characterization and antioxidant activities of extracellular polysaccharide (EPS) and intracellular polysaccharide (IPS) isolated from F. pinicola were investigated. The results showed that the molecular weight of EPS was 2.30 × 104 Da, and EPS was composed of mannose, rhamnose, xylose and galactose with the molar ratio of 0.1:1.0:0.3:0.5. The molecular weight of IPS was 4.07 × 105 Da, and the monosaccharide compositions included glucose, mannose, rhamnose, xylose and galactose with the molar ratio of 1.0:0.9:0.9:0.8:1.1. Antioxidant activities of both EPS and IPS including in vitro scavenging activities on 1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radicals, cellular protective effects on yeast cells from ultraviolet (UV) radiation and H2O2 oxidative damage were tested. Both EPS and IPS showed antioxidant activities in a dose dependent manner, and IPS had higher antioxidant activity than EPS. So EPS and IPS could be potential novel antioxidants for functional food. © 2015 Elsevier Ltd. All rights reserved.


Gong T.,Shaanxi University of Science and Technology | Fei R.,Shaanxi University of Science and Technology | Lai J.,Quartermaster Equipment Institute | Liang G.,Quartermaster Equipment Institute
Communications in Computer and Information Science | Year: 2010

It selected 654 men aging from 17 to 60 at random in the china and collected 15 parts of foot data. The paper per-processed the obtained data and then conducted necessary statistics and analysis. It described their foot shape characteristics and how they differ between different groups classified according to the age bracket from many aspects with qualitative and quantitative indexes. In this paper, 4 characteristic indexes which can reflect lower foot figure characteristics of then were obtained by Factor Analysis. The paper classified and subdivided the foot type of men by those characteristic indexes. © 2010 Springer-Verlag.

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