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Recognition of walking environments and gait period by surface electromyography Special Feature on Intelligent Robats

Seulki KYEONG, Wonseok SHIN, Minjin YANG, Ung HEO, Ji-rou FENG, Jung KIM

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 3,   Pages 342-352 doi: 10.1631/FITEE.1800601

Abstract: exoskeleton to help in walking, the aim of this work is to distinguish the walking environment and gaitperiod using various sensors, including the surface electromyography (sEMG) sensor.period with other sensors.period classification accuracy was 97.8%.period classification, when using only the sEMG sensor.

Keywords: Walking environment     Gait Period     Surface electromyography (sEMG)     Exoskeleton    

Modeling and simulation of normal and hemiparetic gait

Lely A. LUENGAS,Esperanza CAMARGO,Giovanni SANCHEZ

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 233-241 doi: 10.1007/s11465-015-0343-0

Abstract:

Gait is the collective term for the two types of bipedal locomotion, walking and running.First of all, we apply it in the normal gait and then in the permanent hemiparetic gait.and kinetics of gait., especially hemiparetic gait.the significant characteristics of normal gait.

Keywords: bipedal gait     biomechanics     dynamic walking     gait model     human gait     hemiparetic human gait    

Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 455-461 doi: 10.15302/J-FASE-2018232

Abstract: was studied, focusing on the effects of pesticide deposition on cotton leaves during the flowering period

Keywords: aerial spray     cotton     deposition     flowering period     leaf angle     prewetting     UAV    

Design of active orthoses for a robotic gait rehabilitation system

A. C. VILLA-PARRA,L. BROCHE,D. DELISLE-RODRÍGUEZ,R. SAGARÓ,T. BASTOS,A. FRIZERA-NETO

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 242-254 doi: 10.1007/s11465-015-0350-1

Abstract:

An active orthosis (AO) is a robotic device that assists both human gait and rehabilitation therapyBoth AOs will be used to complete a robotic system that improves gait rehabilitation.However, the potential of the proposed AOs to be part of a robotic gait rehabilitation system that improves

Keywords: active orthosis     gait rehabilitation     electroencephalography     surface electromyography    

Using hydrochemical signatures to characterize the long-period evolution of groundwater information in

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1393-7

Abstract:

• The long-period groundwater evolution was identified by hydrochemical

Keywords: Groundwater quality     Hydrochemical signatures     Spatial-temporal variations     Water-rock interactions     Anthropogenic interventions    

Mechanism design of reverse auction on concession period and generalized quality for PPP projects

Xianjia WANG, Shiwei WU

Frontiers of Engineering Management 2017, Volume 4, Issue 2,   Pages 156-170 doi: 10.15302/J-FEM-2017016

Abstract: PPP projects usually require the bid to specify several characteristics of quality and the concession periodmodel of a PPP project can be replaced by a two-dimensional direct mechanism based on the concession period

Keywords: PPP project     reverse auction     mechanism design     multidimensional information     scoring function     two-stage bidding    

A novel period estimation method for X-ray pulsars based on frequency subdivision

Li-rong SHEN,Xiao-ping LI,Hai-feng SUN,Hai-yan FANG,Meng-fan XUE

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 858-870 doi: 10.1631/FITEE.1500052

Abstract: Period estimation of X-ray pulsars plays an important role in X-ray pulsar based navigation (XPNAV).The fast Lomb periodogram is suitable for period estimation of X-ray pulsars, but its performance infrequency subdivision and the continuous Lomb periodogram (CLP) is proposed to improve precision of periodFinally, a refined period is achieved by calculating the CLP in the obtained frequencies.Furthermore, the proposed method performs better than efsearch (a period estimation method of HEAsoft

Keywords: Pulsar navigation     Period estimation     Frequency subdivision     Continuous Lomb periodogram    

Experimental research on the multilayer compartmental particle damper and its application methods on long-period

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 751-766 doi: 10.1007/s11709-018-0509-z

Abstract: To introduce particle damping technology to long-period structure seismic control, a novel multilayercompartmental particle damper (MCPD) was proposed, and a 1/20 scale test model of a typical long-periodThe results showed that the seismic responses of the flexible or semi-flexible bridge towers of long-periodA well-designed MCPD can achieve significant damping for long-period structures under seismic excitationsapplication of MCPDs for seismic control of single-tower self-anchored suspension bridges and other long-period

Keywords: multilayer compartmental particle damper     self-anchored suspension bridges     shaking tables test     long-period    

Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 44-59 doi: 10.1007/s11465-015-0360-z

Abstract: This paper also includes a review of more than 160 papers in Russian for the period of 1935–1975The main features and achievements during this period are also considered.The diagrams also show the following aspects: 1) The most popular and important themes in a specific period

Keywords: theory of gearing (TG)     gear geometry     generating surface     gear synthesis     gear analysis    

Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 51-53

Abstract:

Subjected to the annual changes of the air temperature, the quasi-period rules of the operational

Keywords: hot oil pipeline     air temperature     soil environment     quasi-period    

Short-term effect of temperature variation on the competition between PAOs and GAOs during acclimation period

Nanqi REN, Han KANG, Xiuheng WANG, Nan LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 277-282 doi: 10.1007/s11783-010-0226-x

Abstract: Sequencing batch reactor (SBR) for enhanced biological phosphorus removal (EBPR) processes was used to investigate the impact of the temperature shock on the competition between phosphorus-accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) in start-up stage. During the 34 days operation, SBR was set with temperature variation(0–5 d, 22±1°C; 6–13 d, 29±1°C; 14–34 d, 14±1°C). PAOs and GAOs were analyzed by fluorescent in situ hybridization (FISH), and intracellular polyphosphate granules were stained by Neisser-stain. The results showed that the influence of temperature shock on PAOs’ abundance was more serious than that on GAOs in the enriching process. Under sudden and substantially temperature variation, from 22±1°C to 29±1°C and then to 14±1°C, the domination of PAOs was deteriorated. After temperature shock, PAOs’ competitive advantages at low temperature that concluded in other study did not appear in our study. As mesophilic, GAOs (indicated by and ) were more temperature adaptive and better grew and took the domination at 14±1°C in the end. In the competition process, organisms of tetrad forming organisms (TFOs)-like shape which were considered as typical GAOs, were observed. With the evidence of poly-P granules containing by Neisser-straining and result of FISH, these organisms of TFOs-like shape were better to be assumed as adaption state or a special self-protecting shape of PAOs.

Keywords: fluorescent in situ hybridization (FISH)     tetrad forming organisms (TFOs)     temperature variation     enhanced biological phosphorus removal (EBPR)    

Sensor-guided gait-synchronization lower-extremity-exoskeleton for potential application on unilateral Research Articles

Donghai WANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 920-936 doi: 10.1631/FITEE.2000465

Abstract:

This paper presents a gait-synchronization system to help potential unilateral knee-injured peopleThe gait-synchronization system is integrated with a designed to sense the motion/gait of the healthytrajectories, the motorized hip joint lifts the links during walking and synchronizes the knee-injured gaitwith the healthy gait by a half-cycle delay.The results indicate that the motorized hip-controlled LEE can synchronize the motion/gait of the combined

Keywords: Sensor-guided     Lower-extremity-exoskeleton     Body sensor network     Gait synchronization     Weight-support    

analysis in conventional and organic rice production systems and organic scenarios in the transition period

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 341-350 doi: 10.1007/s11708-012-0206-x

Abstract: scenarios were designed to predict the changes of energy budget and economic analysis in the transition periodIncrease in energy efficiency and productivity was predicted for the transition period but decrease trendin economic indexes was projected for this period in all scenarios.was that the market price of organic rice was the same as that of conventional rice in the transition period

Keywords: energy efficiency     specific energy     net return     Cobb-Douglas function    

Risk assessment on Bohai Bay subsea tunnel in its operational period

Wang Yonghong,Liu Bing,Zhang Yonggang

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 107-112

Abstract:

The operation of super-long subsea tunnel is a extremly complex system project,has larger uncertainty and safety risk. The procedure of risk assessment was explained in detail,and its application on Bohai Bay subsea tunnel project was proposed as a case study in this paper. Firstly, lots of different risk factors of the subsea tunnel operation were identified systematically, which involved water damage,tunnel lining crack, tunnel freezing,tunnel lining corrosion,tunnel earthquake disaster,the air pollution inside the cave,tunnel fire and the train derailment accident. Then,those operational risks were analyzed and assessed by the confidence index method and analytic hierarchy process, and were classified and discussed gradually according to the risk acceptance criterion. Finally,some topics about risk assessment on the subsea tunnel operational risk needed to the further research were high-lighted here.

Keywords: subsea tunnel     operational period     risk analysis     risk assessment    

An experimental analysis of human straight walking

Tao LI, Marco CECCARELLI

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 95-103 doi: 10.1007/s11465-013-0357-4

Abstract: Furthermore, by using experimental tests, modeling and characterization of the human straight walking gait

Keywords: human locomotion     walking gait     characterization     humanoid robot     biped robot    

Title Author Date Type Operation

Recognition of walking environments and gait period by surface electromyography

Seulki KYEONG, Wonseok SHIN, Minjin YANG, Ung HEO, Ji-rou FENG, Jung KIM

Journal Article

Modeling and simulation of normal and hemiparetic gait

Lely A. LUENGAS,Esperanza CAMARGO,Giovanni SANCHEZ

Journal Article

Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Journal Article

Design of active orthoses for a robotic gait rehabilitation system

A. C. VILLA-PARRA,L. BROCHE,D. DELISLE-RODRÍGUEZ,R. SAGARÓ,T. BASTOS,A. FRIZERA-NETO

Journal Article

Using hydrochemical signatures to characterize the long-period evolution of groundwater information in

Journal Article

Mechanism design of reverse auction on concession period and generalized quality for PPP projects

Xianjia WANG, Shiwei WU

Journal Article

A novel period estimation method for X-ray pulsars based on frequency subdivision

Li-rong SHEN,Xiao-ping LI,Hai-feng SUN,Hai-yan FANG,Meng-fan XUE

Journal Article

Experimental research on the multilayer compartmental particle damper and its application methods on long-period

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Journal Article

Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Journal Article

Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Journal Article

Short-term effect of temperature variation on the competition between PAOs and GAOs during acclimation period

Nanqi REN, Han KANG, Xiuheng WANG, Nan LI

Journal Article

Sensor-guided gait-synchronization lower-extremity-exoskeleton for potential application on unilateral

Donghai WANG

Journal Article

analysis in conventional and organic rice production systems and organic scenarios in the transition period

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Journal Article

Risk assessment on Bohai Bay subsea tunnel in its operational period

Wang Yonghong,Liu Bing,Zhang Yonggang

Journal Article

An experimental analysis of human straight walking

Tao LI, Marco CECCARELLI

Journal Article