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Orbit determination using incremental phase and TDOA of X-ray pulsar Project supported by the National Natural Science Foundation of China (No. 61401340), the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2016JM6035), the Fundamental Research Funds for the Central Universities, China (No. JB161303), and the Areospace T.T.&C. Innovation Program (No. 201515A) Article

Rong JIAO,Lu-ping XU,Hua ZHANG,Cong LI

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 6,   Pages 543-552 doi: 10.1631/FITEE.1500365

Abstract: X-ray pulsars offer stable, periodic X-ray pulse sequences that can be used in spacecraft positioning systems. A method using X-ray pulsars to determine the initial orbit of a satellite is presented in this paper. This method suggests only one detector to be equipped on the satellite and assumes that the detector observes three pulsars in turn. To improve the performance, the use of incremental phase in one observation duration is proposed, and the incremental phase is combined with the time difference of arrival (TDOA). Then, a weighted least squares (WLS) algorithm is formulated to calculate the initial orbit. Numerical simulations are performed to assess the proposed orbit determination method.

Keywords： Orbit determination algorithm     Single X-ray pulsar detector     Phase increment     Two-body motion equations    

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Offline motion planning and simulation of two-robot welding coordination

Tie ZHANG, Fan OUYANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 81-92 doi: 10.1007/s11465-012-0309-4

Abstract:

This paper focuses on the two-robot welding coordination of complex curve seam which means one robotgrasp the workpiece, the other hold the torch, the two robots work on the same workpiece simultaneouslypaper builds the dual-robot coordinate system at the beginning, and three point calibration method of twoAfter that, the non master/slave scheme is chosen for the motion planning, the non master/slave schemesets the poses versus time function of the point u on the workpiece, and calculates the two robot end

Keywords： complex curve seam     two robots     coordinated welding     motion planning    

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Design and modeling of continuum robot based on virtual-center of motion mechanism

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0739-6

Abstract: The flexural virtual-center of motion (VCM) mechanism can be machined integrally, and this way eliminatesThen, the pseudo-rigid body (PRB) model of the leaf is extended to the VCM mechanism, and the stiffnessFurthermore, the motion performance of the designed continuum robot is evaluated.

Keywords： VCM mechanism     continuum robot     flexural joint     pseudo-rigid body model     cable-driven    

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Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

Frontiers of Medicine 2020, Volume 14, Issue 3,   Pages 251-261 doi: 10.1007/s11684-019-0727-3

Abstract: Postoperative pancreatic fistula (POPF) is the most common and critical complication after pancreatic body

Keywords： pancreatic fistula     pancreatic body and tail resection     distal pancreatectomy    

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Interaction Effects Between Wave and Two Connected Floating Bodies

Gou Ying,Teng Bin,Ning Dezhi

Strategic Study of CAE 2004, Volume 6, Issue 7,   Pages 75-80

Abstract: boundary integral equation method is used to study the hydrodynamic interaction effects between wave and twoThe hydrodynamic interaction between the two bodies is considered.The amplitudes of the body motions are determined according to the motion equations of the two bodiesverify this method, the heave amplitude at the hinged joint and the relative angular deflection of two

Keywords： boundary integral method     hydrodynamic interaction effects     motion responses    

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Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 361-365 doi: 10.1007/s11708-012-0210-1

Abstract: This paper describes an innovative method of using a non-buoyant body to harness ocean waves.These devices face excessive stress during the rough weather on account of the extreme motion of wavesThe present study shows that using a non-buoyant body for conventional point absorber principle is muchA small scale wave energy converter with non-buoyant body was designed, fabricated and tested in small

Keywords： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     electrical energy    

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Lightweight design of an electric bus body structure with analytical target cascading

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0718-y

Abstract: In this study, a lightweight design of a newly developed multi-material electric bus body structure isBy proposing an ATC-based two-level optimization strategy, the original lightweight design problem isTo enhance the interaction between two-level systems, each subsystem-level objective is reformulated

Keywords： electric vehicle     body in white (BIW)     lightweight     analytical target cascading (ATC)    

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A review on membrane distillation in process engineering: design and exergy equations, materials and

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 592-613 doi: 10.1007/s11705-021-2105-3

Abstract: One of the problems that most afflicts humanity is the lack of clean water. Water stress, which is the pressure on the quantity and quality of water resources, exists in many places throughout the World. Desalination represents a valid solution to the scarcity of fresh water and several technologies are already well applied and successful (such as reverse osmosis), producing about 100 million m3·d−1 of fresh water. Further advances in the field of desalination can be provided by innovative processes such as membrane distillation. The latter is of particular interest for the treatment of waste currents from conventional desalination processes (for example the retentate of reverse osmosis) as it allows to desalt highly concentrated currents as it is not limited by concentration polarization phenomena. New perspectives have enhanced research activities and allowed a deeper understanding of mass and heat transport phenomena, membrane wetting, polarization phenomena and have encouraged the use of materials particularly suitable for membrane distillation applications. This work summarizes recent developments in the field of membrane distillation, studies for module length optimization, commercial membrane modules developed, recent patents and advancement of membrane material.

Keywords： membrane distillation     recent developments     heat and mass transfer     wetting     membrane material    

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Yesterday, Today and Future of the Engineering Management Body of Knowledge

Hiral Shah,Walter Nowocin

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 60-63 doi: 10.15302/J-FEM-2015009

Abstract: The purpose of engineering management body of knowledge (EMBOK) is to delineate the knowledge, skillsAmerican Society for Engineering Management (ASEM) offers two certification exams based on the EMBOK,

Keywords： body of knowledge     engineering management     certification exam     engineering manager     competency areas    

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Parametric equations for notch stress concentration factors of rib–deck welds under bending loading

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 595-608 doi: 10.1007/s11709-021-0720-1

Abstract: The effective notch stress approach for evaluating the fatigue strength of rib–deck welds requires notch stress concentration factors obtained from complex finite element analysis. To improve the efficiency of the approach, the notch stress concentration factors for three typical fatigue-cracking modes (i.e., root–toe, root–deck, and toe–deck cracking modes) were thoroughly investigated in this study. First, we developed a model for investigating the effective notch stress in rib–deck welds. Then, we performed a parametric analysis to investigate the effects of multiple geometric parameters of a rib–deck weld on the notch stress concentration factors. On this basis, the multiple linear stepwise regression analysis was performed to obtain the optimal regression functions for predicting the notch stress concentration factors. Finally, we employed the proposed formulas in a case study. The notch stress concentration factors estimated from the developed formulas show agree well with the finite element analysis results. The results of the case study demonstrate the feasibility and reliability of the proposed formulas. It also shows that the fatigue design curve of FAT225 seems to be conservative for evaluating the fatigue strength of rib–deck welds.

Keywords： notch stress concentration factor     rib–deck weld     parametric analysis     regression analysis     parametric equation    

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Solving nonlinear differential equations of Vanderpol, Rayleigh and Duffing by AGM

M. R. AKBARI,D. D. GANJI,A. MAJIDIAN,A. R. AHMADI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 177-190 doi: 10.1007/s11465-014-0288-8

Abstract:

In the present paper, three complicated nonlinear differential equations in the field of vibration, which are Vanderpol, Rayleigh and Duffing equations, have been analyzed and solved completely by AlgebraicInvestigating this kind of equations is a very hard task to do and the obtained solution is not accuratenumerical method, it is possible to indicate that AGM can be successfully applied for various differential equations

Keywords： Algebraic Method (AGM)     Angular Frequency     Vanderpol     Rayleigh     Duffing    

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Thinking About Establishing New Medicine

Ma Ainai,Zhao Shaoqui

Strategic Study of CAE 2007, Volume 9, Issue 10,   Pages 19-23

Abstract:  But it always cures illness by dissevering human body. So Western medicine has puzzled itself about how to stick up for whole human body.uniform to systemic theory" ,  advance to establish a new medicine,  that is "Human Body

Keywords： complexity science     open complex giant system     human body ecosystem     human body information system     humanbody ecological medicine    

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Some Scientific Problems in Proca's Theory Study

Huang Zhixun

Strategic Study of CAE 2005, Volume 7, Issue 3,   Pages 6-12

Abstract: In other-wise, for a massive photon the Maxwell equations get replaced by the Proca equations.

The main, linear extensions of Maxwell equations are the Proca equations (1936) and the Ohmaraequations (1956).

Keywords： special relativity     Maxwell equations     Proca equations     velocity of EM-waves     rest mass of photon    

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Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 76-79 doi: 10.1007/s11465-005-0007-6

Abstract:

The design of intermittent-motion linkages using traditional methods is usually complicated.In this paper, (1) a new method for realizing intermittent motion, using linkages with a slight differencein length between links, is studied; (2) some new types of intermittent-motion linkages and their softwarevisual analysis and design are developed; and (3) influences of some design parameters on intermittent-motionResults confirmed that the theory and the software are useful, making the synthesis of intermittent-motion

Keywords： synthesis     useful     intermittent     intermittent-motion     traditional    

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Sodium butyrate activates HMGCS2 to promote ketone body production through SIRT5-mediated desuccinylation

Frontiers of Medicine 2023, Volume 17, Issue 2,   Pages 339-351 doi: 10.1007/s11684-022-0943-0

Abstract: -3-methylglutaryl-CoA synthase 2 (HMGCS2), a rate-limiting enzyme in ketogenesis, to promote ketone bodySuccinylation status of HMGCS2 protein was altered by a reduction at two sites (K221 and K358) withoutThe data suggests that SB activated HMGCS2 through SIRT5-mediated desuccinylation for ketone body productionThe data provide a novel molecular mechanism for SB activity in the induction of ketone body production

Keywords： sodium butyrate     succinylation     HMGCS2     ketogenesis     SIRT5    

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Title Author Date Type Operation

Orbit determination using incremental phase and TDOA of X-ray pulsar Project supported by the National Natural Science Foundation of China (No. 61401340), the Natural Science Basic Research Plan in Shaanxi Province of China (No. 2016JM6035), the Fundamental Research Funds for the Central Universities, China (No. JB161303), and the Areospace T.T.&C. Innovation Program (No. 201515A)

Rong JIAO,Lu-ping XU,Hua ZHANG,Cong LI

Journal Article

Offline motion planning and simulation of two-robot welding coordination

Tie ZHANG, Fan OUYANG

Journal Article

Design and modeling of continuum robot based on virtual-center of motion mechanism

Journal Article

Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

Journal Article

Interaction Effects Between Wave and Two Connected Floating Bodies

Gou Ying,Teng Bin,Ning Dezhi

Journal Article

Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Journal Article

Lightweight design of an electric bus body structure with analytical target cascading

Journal Article

A review on membrane distillation in process engineering: design and exergy equations, materials and

Journal Article

Yesterday, Today and Future of the Engineering Management Body of Knowledge

Hiral Shah,Walter Nowocin

Journal Article

Parametric equations for notch stress concentration factors of rib–deck welds under bending loading

Journal Article

Solving nonlinear differential equations of Vanderpol, Rayleigh and Duffing by AGM

M. R. AKBARI,D. D. GANJI,A. MAJIDIAN,A. R. AHMADI

Journal Article

Thinking About Establishing New Medicine

Ma Ainai,Zhao Shaoqui

Journal Article

Some Scientific Problems in Proca's Theory Study

Huang Zhixun

Journal Article

Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Journal Article

Sodium butyrate activates HMGCS2 to promote ketone body production through SIRT5-mediated desuccinylation

Journal Article