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A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 877-894 doi: 10.1007/s11709-021-0756-2

Abstract: Many bridge design specifications consider multi-lane factors (MLFs) a critical component of the trafficMeasured multi-lane traffic data generally exhibit significant lane disparities in traffic loads overstatistical approach that considers the presence of multiple trucks.The model sensitivity analysis demonstrated the significant influence of lane disparity of truck trafficvolume and truck weight distribution on the MLF.

Keywords： bridges     multi-lane factor     traffic load     lane load disparity     multi-truck presence     weigh-in-motion    

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Multi-axle dynamic steering system of truck-howitzer

LI Yanliang, GAO Xiuhua, ZHANG Chunqiu, SUN Yubo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 44-49 doi: 10.1007/s11465-008-0002-9

Abstract: A two-degree-of-freedom (2-DOF) steering model of multi-axle vehicle was established.

Keywords： multi-axle     acceleration     relationship     smoothly     handling stability    

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Dynamic response of precast segmental bridge columns under heavy truck impact

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 327-349 doi: 10.1007/s11709-023-0911-z

Abstract: However, few studies have focused on PSBCs subjected to high-energy impacts caused by heavy truck collisionsTherefore, the behavior of PSBCs under a heavy truck impact was investigated in this study using high-fidelitySubsequently, the impact force, failure mode, displacement, and internal force of the PSBCs under heavy truckAn extensive study was performed to assess the influence of the section size, truck weight, impact velocityThe truck weight was found to have a minor effect on the engine impact force.

Keywords： precast segmental bridge columns     heavy truck     collision     dynamic response    

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Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 68-71 doi: 10.1007/s11705-007-0014-8

Abstract: The association and properties of multi-block like copolymers (TP) of acrylamide (AM) and acrylic acidTEM images indicated that at the maximal viscosity the copolymer obtained in the presence of template

Keywords： aqueous solution     homopolyacrylic     copolymer solution     significant structure     presence    

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Schedule refinement for homogeneousmulti-core processors in the presence of manufacturing-caused heterogeneity

Zhi-xiang CHEN,Zhao-lin LI,Shan CAO,Fang WANG,Jie ZHOU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 12,   Pages 1018-1033 doi: 10.1631/FITEE.1500035

Abstract: Multi-core homogeneous processors have been widely used to deal with computation-intensive embedded applicationsmanufacturing process lead to a significant spread in the operating speeds of cores within homogeneous multi-coreheterogeneity-aware schedule refining (HASR) scheme by fully exploiting the heterogeneities of homogeneous multi-core

Keywords： Schedule refining     Multi-core processor     Heterogeneity     Representative chip operating point    

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Ozone kinetics of dimethyl sulfide in the presence of water vapor

Haitao WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 833-835 doi: 10.1007/s11783-013-0570-8

Abstract: Base on these results, it is possible to see the reaction of O /DMS in the presence of water vapor as

Keywords： rate constants     ozone (O3)     dimethyl sulfide (DMS)     water vapor    

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Surface water treatment benefits from the presence of algae: Influence of algae on the coagulation behavior

Yanxia Zhao, Huiqing Lian, Chang Tian, Haibo Li, Weiying Xu, Sherub Phuntsho, Kaimin Shih

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1350-x

Abstract: Additionally, the presence of algae enhanced organic matter removal by up to 30% compared to controlledmaterials and organic matter with a wide range of molecular weight distribution (693–4945 Da) even in the presenceThe presence of algae cells and/or algal organic matter is likely to function as an additional coagulant

Keywords： Coagulation     Polytitanium chloride     Coagulation behaviour     Algae     Floc property    

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Accelerated degradation of orange G over a widepH range in the presence of FeVO

Xiaoxia Ou, Jianfang Yan, Fengjie Zhang, Chunhua Zhang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1013-3

Abstract: In this study, FeVO was prepared andused as Fenton-like catalyst to degrade orange G (OG) dye. The removalof OG in an aqueous solution containing 0.5 g·L FeVO and 15 mmol·L hydrogen peroxide at pH 7.0 reached 93.2%. Similar rates were achievedat pH 5.7 ( = 0.0471 min ), pH 7.0 ( = 0.0438 min ), and pH 7.7 ( = 0.0434 min ). The FeVO catalyst successfullyovercomes the problem faced in the heterogeneous Fenton process, i.e.,the narrow working pH range. The data for the removal of OG in FeVO systems containing H O conform to the Langmuir–Hinshelwood model ( = 0.9988),indicating that adsorption and surface reaction are the two basicmechanisms for OG removal in the FeVO –H O system. Furthermore, the irradiationof FeVO by visible light significantly increasesthe degradation rate of OG, which is attributed to the enhanced ratesof the iron cycles and vanadium cycles.

Keywords： Azo dye     Degradation     FeVO4     Kinetics     Advanced oxidation processes    

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Impact of solids on biphasic biodegradation of phenanthrene in the presence of hydroxypropyl- β

Zhenyi ZHANG, Chihiro INOUE, Guanghe LI,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 329-333 doi: 10.1007/s11783-010-0232-z

Abstract: Degradation enhanced in the presence of HPCD, and the enhancing factor was calculated (20 mmol

Keywords： biphasic biodegradation     hydroxypropyl-β     -cyclodextrin (HPCD)     polycyclic aromatic hydrocarbons (PAHs)    

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Anensemble method for data stream classification in the presence of concept drift

Omid ABBASZADEH,Ali AMIRI,Ali Reza KHANTEYMOORI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 12,   Pages 1059-1068 doi: 10.1631/FITEE.1400398

Abstract: One recent area of interest in computer science is data stream management and processing. By ‘data stream’, we refer to continuous and rapidly generated packages of data. Specific features of data streams are immense volume, high production rate, limited data processing time, and data concept drift; these features differentiate the data stream from standard types of data. An issue for the data stream is classification of input data. A novel ensemble classifier is proposed in this paper. The classifier uses base classifiers of two weighting functions under different data input conditions. In addition, a new method is used to determine drift, which emphasizes the precision of the algorithm. Another characteristic of the proposed method is removal of different numbers of the base classifiers based on their quality. Implementation of a weighting mechanism to the base classifiers at the decision-making stage is another advantage of the algorithm. This facilitates adaptability when drifts take place, which leads to classifiers with higher efficiency. Furthermore, the proposed method is tested on a set of standard data and the results confirm higher accuracy compared to available ensemble classifiers and single classifiers. In addition, in some cases the proposed classifier is faster and needs less storage space.

Keywords： Data stream     Classificaion     Ensemble classifiers     Concept drift    

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Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free molecule regime and for the continuum range. The present work, taking into account the influence of internal force fields such as magnetic force, electric force and molecular forces, created by particles themselves, recalculated the collision frequency in the case of particles much smaller than the mean free path of the gas (free molecule regime). Attractive forces increase naturally the collision frequency, while repulsive forces decrease it. The calculation was performed for all types of central forces deriving from a potential, including Coulomb forces and Van der Waals forces.

Keywords： aerosol particles     collision frequency function     coagulation    

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Role of water chemistry on estrone removal by nanofiltration with the presence of hydrophobic acids

Xue JIN,Jiangyong HU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 164-170 doi: 10.1007/s11783-014-0747-9

Abstract: solution chemistry (solution pH and ionic strength) on the estrone rejection by NF membrane with the presenceCrossflow nanofiltration experiments show that the presence of HpoA significantly improved estrone rejectionpH 7) as a result of strengthening the electrostatic repulsion between estrone and membrane with the presence

Keywords： indirect potable water reuse     steroid hormone     nanofiltration(NF)     rejection     water chemistry     hydrophobic acids    

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Robust cooperation of connected vehicle systems with eigenvalue-bounded interaction topologies in the presence

Keqiang LI, Feng GAO, Shengbo Eben LI, Yang ZHENG, Hongbo GAO

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 354-367 doi: 10.1007/s11465-018-0486-x

Abstract:

This study presents a distributed H-infinity control method for uncertain platoons with dimensionally and structurally unknown interaction topologies provided that the associated topological eigenvalues are bounded by a predesigned range. With an inverse model to compensate for nonlinear powertrain dynamics, vehicles in a platoon are modeled by third-order uncertain systems with bounded disturbances. On the basis of the eigenvalue decomposition of topological matrices, we convert the platoon system to a norm-bounded uncertain part and a diagonally structured certain part by applying linear transformation. We then use a common Lyapunov method to design a distributed H-infinity controller. Numerically, two linear matrix inequalities corresponding to the minimum and maximum eigenvalues should be solved. The resulting controller can tolerate interaction topologies with eigenvalues located in a certain range. The proposed method can also ensure robustness performance and disturbance attenuation ability for the closed-loop platoon system. Hardware-in-the-loop tests are performed to validate the effectiveness of our method.

Keywords： automated vehicles     platoon     distributed control     robustness    

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Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile

Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 127-136 doi: 10.1007/s11465-013-0254-x

Abstract: investigate the nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence

Keywords： cam     nonlinear behaviour     oscillating roller follower     profile error    

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Process control factors for continuous microbial perchlorate reduction in the presence of zero-valent

ARTHUR Robert D.,TORLAPATI Jagadish,SHIN Kyung-Hee,CHA Daniel K.,YOON Yeomin,SON Ahjeong

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 386-393 doi: 10.1007/s11783-013-0593-1

Abstract: Process control parameters influencing microbial perchlorate reduction via a flow-through zero-valent iron (ZVI) column reactor were investigated in order to optimize perchlorate removal from water. Mixed perchlorate reducers were obtained from a wastewater treatment plant and inoculated into the reactor without further acclimation. Examined parameters included hydraulic residence time (HRT), pH, nutrients requirement, and perchlorate reduction kinetics. The minimum HRT for the system was concluded to be 8 hr. The removal efficiency of 10 mg·L influent perchlorate concentration was reduced by 20%–80% without control to the neutral pH (HRT= 8 hr). Therefore pH was determined to be an important parameter for microbial perchlorate reduction. Furthermore, a viable alternative to pH buffer was discussed. The microbial perchlorate reduction followed the first order kinetics, with a rate constant ( ) of 0.761 hr . The results from this study will contribute to the implementation of a safe, cost effective, and efficient system for perchlorate reduction to below regulated levels.

Keywords： perchlorate     zero-valent iron (ZVI)     microbial reduction     hydrogen    

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Title Author Date Type Operation

A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Journal Article

Multi-axle dynamic steering system of truck-howitzer

LI Yanliang, GAO Xiuhua, ZHANG Chunqiu, SUN Yubo

Journal Article

Dynamic response of precast segmental bridge columns under heavy truck impact

Journal Article

Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Journal Article

Schedule refinement for homogeneousmulti-core processors in the presence of manufacturing-caused heterogeneity

Zhi-xiang CHEN,Zhao-lin LI,Shan CAO,Fang WANG,Jie ZHOU

Journal Article

Ozone kinetics of dimethyl sulfide in the presence of water vapor

Haitao WANG

Journal Article

Surface water treatment benefits from the presence of algae: Influence of algae on the coagulation behavior

Yanxia Zhao, Huiqing Lian, Chang Tian, Haibo Li, Weiying Xu, Sherub Phuntsho, Kaimin Shih

Journal Article

Accelerated degradation of orange G over a widepH range in the presence of FeVO

Xiaoxia Ou, Jianfang Yan, Fengjie Zhang, Chunhua Zhang

Journal Article

Impact of solids on biphasic biodegradation of phenanthrene in the presence of hydroxypropyl- β

Zhenyi ZHANG, Chihiro INOUE, Guanghe LI,

Journal Article

Anensemble method for data stream classification in the presence of concept drift

Omid ABBASZADEH,Ali AMIRI,Ali Reza KHANTEYMOORI

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

Role of water chemistry on estrone removal by nanofiltration with the presence of hydrophobic acids

Xue JIN,Jiangyong HU

Journal Article

Robust cooperation of connected vehicle systems with eigenvalue-bounded interaction topologies in the presence

Keqiang LI, Feng GAO, Shengbo Eben LI, Yang ZHENG, Hongbo GAO

Journal Article

Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile

Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED

Journal Article

Process control factors for continuous microbial perchlorate reduction in the presence of zero-valent

ARTHUR Robert D.,TORLAPATI Jagadish,SHIN Kyung-Hee,CHA Daniel K.,YOON Yeomin,SON Ahjeong

Journal Article