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The manufacturing technology research of the super length and big specification and high strength main cable strand for suspension bridge

Zhang Hailiang,Shen Wang,Li Gang,Guo Jian

Strategic Study of CAE 2010, Volume 12, Issue 7,   Pages 8-12

Abstract: the paper further researched the manufacturing technology of main cable strand with super length (≥4250 m), big specification (≥169 spec.) and high strength (1 860 MPa grade) and the technique and device

Keywords： super long span     big specification     1 860 MPa     4 250 m     fatigue test     putting the cables test    

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第五届机械制造，建模和机电一体化国际会议（IC4M）

Conference Date: 27 Feb 2020

Conference Place: 广东深圳

Administered by: 香港机械工程师协会

A density functional theory study of methane activation on MgO supported NiM cluster: role of M on C–H

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1485-1492 doi: 10.1007/s11705-022-2169-8

Abstract: In present work, methane activation on MgO supported Ni–M (M = Fe, Co, Cu, Pd, Pt) cluster was exploredThe role of M on the first C–H bond cleavage of CH4 was investigated.To illustrate the adsorptive dissociation behaviors of CH4 at different Ni–M clusters, theIn general, the electron gain of CH4 binding at different Ni–M clusters follows the sequence/sub> raises with the CH4 electron gain increasing.

Keywords： CH4 dissociation     Ni–M     C–H bond activation     charge transfer    

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Effect of TiO

Navid Azizi, Mojgan Isanejad, Toraj Mohammadi, Reza M. Behbahani

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 517-530 doi: 10.1007/s11705-018-1781-0

Abstract: Membranes have attracted much attention as economical methods for industrial chemical processes. The effects of the titanium dioxide nanoparticle load on the morphology and CO /CH separation performance of poly (ether-block-amide) (PEBAX-1657) mixed matrix membranes (MMMs) were investigated from pressures of 3–12 bar and temperatures of 30°C–60°C. The PEBAX membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis, atomic force microscopy and tensile strength analysis. The incorporation of TiO nanoparticles into the polymeric MMMs improved the CO /CH gas separation performance (both the permeability and selectivity) of the membranes. The CO permeability and ideal CO /CH selectivity values of the nanocomposite membrane loaded with 8 wt-% TiO were 172.32 Barrer and 24.79, respectively whereas those of the neat membrane were 129.87 Barrer and 21.39, respectively.

Keywords： mixed matrix membrane     TiO2 nanoparticles     PEBAX-1657     CO2/CH4 separation    

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Carbon dioxide: a renewable feedstock for the synthesis of fine and bulk chemicals

JAGTAP, Bhalchandra M. BHANAGE,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 213-235 doi: 10.1007/s11705-009-0227-0

Abstract: This review focuses on the synthesis of cyclic carbonates, vinyl carbamates, and quinazoline-2,4(1,3)

Keywords： inertness     CO     phosgene-based synthetic     quinazoline-2     4     equilibrium    

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Study on four-step operational mode prototype debugging of TGP lock under impounded level 156 m in the

Hu Ya’an,Zhang Ruikai,Li Yun

Strategic Study of CAE 2009, Volume 11, Issue 9,   Pages 52-58

Abstract: expounds the superiority of adopting four-step operational mode for TGP lock under impounded level 156 mbeen basically eliminated, the working conditions of the lock under exceeding design water head 45.2 m

Keywords： TGP lock     operational mode     prototype debugging    

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Inexpensive synthesis of a high-performance Fe

Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 405-416 doi: 10.1007/s11705-016-1579-x

Abstract: A sol-gel technique has been developed for the synthesis of a magnetite-silica-titania (Fe O -SiO -TiO ) tertiary nanocomposite with improved photocatalytic properties based on the use of inexpensive titania and silica precursors. The exceptional photocatalytic activity of the resulting materials was demonstrated by using them to photocatalyze the degradation of methylene blue solution. The best formulation achieved 98% methylene blue degradation. An interesting feature of the present work was the ability to magnetically separate and reuse the catalyst. The efficiency of the catalyst remained high during two reuses. The synthesized nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, ultra-violet-visible spectroscopy, diffuse reflectance spectroscopy, and thermogravimetric analysis. XRD analysis revealed the formation of multicrystalline systems of cubic magnetite and anatase titania crystals. SEM and TEM characterization revealed well-developed and homogeneously dispersed particles of size less than 15 nm. FTIR spectra confirmed the chemical interaction of titania and silica. It was further noticed that the optical properties of the prepared materials were dependent on the relative contents of their constituent metal oxides.

Keywords： sol-gel     photocatalysis     magnetic recovery     TiO2     Fe3O4     SiO2    

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MEACC: an energy-efficient framework for smart devices using cloud computing systems Research Articles

Khalid Alsubhi, Zuhaib Imtiaz, Ayesha Raana, M.

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 6,   Pages 809-962 doi: 10.1631/FITEE.1900198

Abstract: Rapidly increasing capacities, decreasing costs, and improvements in computational power, storage, and communication technologies have led to the development of many applications that carry increasingly large amounts of traffic on the global networking infrastructure. lead to emerging technologies and play a vital role in rapid evolution. have become a primary 24/7 need in today’s information technology world and include a wide range of supporting processing-intensive applications. Extensive use of many applications on results in increasing complexity of mobile software applications and consumption of resources at a massive level, including smart device battery power, processor, and RAM, and hinders their normal operation. Appropriate resource utilization and energy efficiency are fundamental considerations for because limited resources are sporadic and make it more difficult for users to complete their tasks. In this study we propose the model of mobile energy augmentation using (MEACC), a new framework to address the challenges of massive and inefficient resource utilization in . MEACC efficiently filters the applications to be executed on a smart device or offloaded to the cloud. Moreover, MEACC efficiently calculates the total execution cost on both the mobile and cloud sides including communication costs for any application to be offloaded. In addition, resources are monitored before making the decision to offload the application. MEACC is a promising model for load balancing and reduction in emerging environments.

Keywords： 卸载；智能设备；云计算；移动计算；能耗    

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1.3-μm 4×25-Gb/s hybrid integrated TOSA and ROSA Special Feature on Optoelectronic Devices and Inte

Yu LIU, Hao-tian BAO, Yi-ming ZHANG, Zhi-ke ZHANG, Yun-shan ZHANG, Xiang-fei CHEN, Jun LU, Yue-chun SHI

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 4,   Pages 490-497 doi: 10.1631/FITEE.1800371

Abstract:

The design and fabrication of a compact and low-cost 4×25-Gb/s transmitter optical sub-assembly (TOSAIn TOSA, the wavelength of four 1.3-μm discrete directly modulated laser chips is well controlled based

Keywords： Reconstruction equivalent chirp     Arrayed waveguide grating     Transmitter optical subassembly     Hybrid integrated    

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Immobilization and characterization of the mycelia-embedded polylysine-alginate beads and their decolorization performance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2001-2013 doi: 10.1007/s11705-023-2341-9

Abstract: effects of -polylysine-alginate beads were demonstrated along with Coomassie brilliant blue G-250immobilization of L. deliciosus mycelia could improve the decolorization of Coomassie brilliant blue G-250

Keywords： mycelia     immobilization     decolorization     polylysine-alginate beads     Coomassie brilliant blue G-250    

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An untethered cable-driven ankle exoskeleton with plantarflexion-dorsiflexion bidirectional movement assistance Research

Tian-miao Wang, Xuan Pei, Tao-gang Hou, Yu-bo Fan, Xuan Yang, Hugh M.

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5,   Pages 723-739 doi: 10.1631/FITEE.1900455

Abstract: Lower-limb assisted exoskeletons are widely researched for movement assistance or rehabilitation training. Due to advantages of compliance with human body and lightweight, some prototypes have been developed, but most of these can assist only unidirectional movement. In this paper we present an untethered that can achieve plantarflexion-dorsiflexion bidirectional motion bilaterally using a pair of single motors. The main weights of the exoskeleton, i.e., the motors, power supplement units, and control units, were placed close to the proximity of the human body, i.e., the waist, to reduce the redundant rotation inertia which would apply on the wearer’s leg. A cable force transmission system based on gear-pulley assemblies was designed to transfer the power from the motor to the end-effector effectively. A cable self-tension device on the power output unit was designed to tension the cable during walking. The system based on a foot pressure sensor and an inertial measurement unit (IMU) could identify the gait cycle and gait states efficiently. To validate the power output performance of the exoskeleton, a torque tracking experiment was conducted. When the subject was wearing the exoskeleton with power on, the muscle activity of the soleus was reduced by 5.2% compared to the state without wearing the exoskeleton. This preliminarily verifies the positive assistance effect of our exoskeleton. The study in this paper demonstrates the promising application of a lightweight exoskeleton on human motion augmentation or rehabilitation.

Keywords： Ankle exoskeleton     Plantarflexion-dorsiflexion bidirectional assistance     Biological gait torque     Cable-driven     Gait detection    

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A cooperative heterogeneous vehicular clustering framework for efficiency improvement Research Articles

Iftikhar Ahmad, Rafidah Md Noor, Zaheed Ahmed, Umm-e-Habiba, Naveed Akram, Fausto Pedro García Márquez

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 9,   Pages 1247-1259 doi: 10.1631/FITEE.2000260

Abstract: Heterogeneous ing integrates multiple types of communication networks to work efficiently for various vehicular applications. One popular form of heterogeneous network is the integration of long-term evolution (LTE) and dedicated short-range communication. The of such a network infrastructure and the non- involved in sharing cost/data are potential problems to solve. A ing framework is one solution to these problems, but the framework should be formally verified and validated before being deployed in the real world. To solve these issues, first, we present a heterogeneous framework, named destination and interest-aware clustering, for ing that integrates vehicular ad hoc networks with the LTE network for improving road traffic efficiency. Then, we specify a model system of the proposed framework. The model is formally verified to evaluate its performance at the functional level using a model checking technique. To evaluate the performance of the proposed framework at the micro-level, a heterogeneous simulation environment is created by integrating state-of-the-art tools. The comparison of the simulation results with those of other known approaches shows that our proposed framework performs better.

Keywords： 车辆集群；异构性；协同；形式验证；系统模型    

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Dynamic grouping of heterogeneous agents for exploration and strike missions Research Article

Chen CHEN, Xiaochen WU, Jie CHEN, Panos M.

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1,   Pages 86-100 doi: 10.1631/FITEE.2000352

Abstract: The ever-changing environment and complex combat missions create new demands for the formation of mission groups of unmanned combat agents. This study aims to address the problem of dynamic construction of mission groups under new requirements. Agents are heterogeneous, and a method must dynamically form new groups in circumstances where missions are constantly being explored. In our method, a strategy that combines s and response threshold models is proposed to dynamically adjust the members of the mission group and adapt to the needs of new missions. The degree of matching between the mission requirements and the group's capabilities, and the communication cost of are used as indicators to evaluate the quality of the group. The response threshold method and the ant colony algorithm are selected as the comparison algorithms in the simulations. The results show that the grouping scheme obtained by the proposed method is superior to those of the comparison methods.

Keywords： Multi-agent     Dynamic missions     Group formation     Heuristic rule     Networking overhead    

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A novel hybrid cryptosystem based on DQFrFT watermarking and 3D-CLM encryption for healthcare services Research Article

Fatma KHALLAF, Walid EL-SHAFAI, El-Sayed M. EL-RABAIE, Naglaa F. SOLIMAN, Fathi E.

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 1045-1061 doi: 10.1631/FITEE.2200372

Abstract: algebra has been used to apply the fractional Fourier transform (FrFT) to color images in a comprehensive approach. However, the discrete fractional random transform (DFRNT) with adequate basic randomness remains to be examined. This paper presents a novel multistage privacy system for s based on discrete fractional Fourier transform (DQFrFT) watermarking and . First, we describe DFRNT (QDFRNT), which generalizes DFRNT to handle signals effectively, and then use QDFRNT to perform . To efficiently evaluate QDFRNT, this study derives the relationship between the QDFRNT of a signal and the four components of the DFRNT signal. Moreover, it uses the human vision system’s (HVS) masking qualities of edge, texture, and color tone immediately from the color host image to adaptively modify the watermark strength for each block in the using the QDFRNT-based and support vector machine (SVM) techniques. The limitations of watermark embedding are also explained to conserve watermarking energy. Second, 3D-CLM is employed to improve the system’s security and efficiency, allowing it to be used as a multistage privacy system. The proposed security system is effective against many types of channel noise attacks, according to simulation results.

Keywords： Color medical image     Quaternion     Adaptive watermarking     Encryption     Fractional transform     Three-dimensional chaotic logistic map (3D-CLM)    

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ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1728-1740 doi: 10.1007/s11705-023-2322-z

Abstract: A novel Z-scheme ZnFe2O4/BiVO4 heterojunction photocatalyst was successfullyCompared with the single-phase counterparts, ZnFe2O4/BiVO4 demonstratedConsequently, the 30% ZnFe2O4/BiVO4 catalyst afforded a degradationorganic carbon removal rate of 50%, which is an excellent activity compared with ever reported BiVO42O4/BiVO4 heterojunctions were quite

Keywords： ZnFe2O4/BiVO4     Z-scheme heterojunction     photocatalytic degradation    

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Title Author Date Type Operation

The manufacturing technology research of the super length and big specification and high strength main cable strand for suspension bridge

Zhang Hailiang,Shen Wang,Li Gang,Guo Jian

Journal Article

第五届机械制造，建模和机电一体化国际会议（IC4M）

27 Feb 2020

Conference Information

A density functional theory study of methane activation on MgO supported NiM cluster: role of M on C–H

Journal Article

Effect of TiO

Navid Azizi, Mojgan Isanejad, Toraj Mohammadi, Reza M. Behbahani

Journal Article

Carbon dioxide: a renewable feedstock for the synthesis of fine and bulk chemicals

JAGTAP, Bhalchandra M. BHANAGE,

Journal Article

Study on four-step operational mode prototype debugging of TGP lock under impounded level 156 m in the

Hu Ya’an,Zhang Ruikai,Li Yun

Journal Article

Inexpensive synthesis of a high-performance Fe

Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Journal Article

MEACC: an energy-efficient framework for smart devices using cloud computing systems

Khalid Alsubhi, Zuhaib Imtiaz, Ayesha Raana, M.

Journal Article

1.3-μm 4×25-Gb/s hybrid integrated TOSA and ROSA

Yu LIU, Hao-tian BAO, Yi-ming ZHANG, Zhi-ke ZHANG, Yun-shan ZHANG, Xiang-fei CHEN, Jun LU, Yue-chun SHI

Journal Article

Immobilization and characterization of the mycelia-embedded polylysine-alginate beads and their decolorization performance

Journal Article

An untethered cable-driven ankle exoskeleton with plantarflexion-dorsiflexion bidirectional movement assistance

Tian-miao Wang, Xuan Pei, Tao-gang Hou, Yu-bo Fan, Xuan Yang, Hugh M.

Journal Article

A cooperative heterogeneous vehicular clustering framework for efficiency improvement

Iftikhar Ahmad, Rafidah Md Noor, Zaheed Ahmed, Umm-e-Habiba, Naveed Akram, Fausto Pedro García Márquez

Journal Article

Dynamic grouping of heterogeneous agents for exploration and strike missions

Chen CHEN, Xiaochen WU, Jie CHEN, Panos M.

Journal Article

A novel hybrid cryptosystem based on DQFrFT watermarking and 3D-CLM encryption for healthcare services

Fatma KHALLAF, Walid EL-SHAFAI, El-Sayed M. EL-RABAIE, Naglaa F. SOLIMAN, Fathi E.

Journal Article

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

Journal Article