Search results for: Y. D. Li

Items from 1 to 20 out of 29 results

article

D‐Cloth: Skinning‐based Cloth Dynamic Prediction with a Three‐stage Network

Y. D. Li, M. Tang, X. R. Chen, Y. Yang, more

Computer Graphics Forum > 42 > 7 > n/a - n/a

We propose a three‐stage network that utilizes a skinning‐based model to accurately predict dynamic cloth deformation. Our approach decomposes cloth deformation into three distinct components: static, coarse dynamic, and wrinkle dynamic components. To capture these components, we train our three‐stage network accordingly. In the first stage, the static component is predicted by constructing a static...

article

N‐Cloth: Predicting 3D Cloth Deformation with Mesh‐Based Networks

Y. D. Li, M. Tang, Y. Yang, Z. Huang, more

Computer Graphics Forum > 41 > 2 > 547 - 558

We present a novel mesh‐based learning approach (N‐Cloth) for plausible 3D cloth deformation prediction. Our approach is general and can handle cloth or obstacles represented by triangle meshes with arbitrary topologies. We use graph convolution to transform the cloth and object meshes into a latent space to reduce the non‐linearity in the mesh space. Our network can predict the target 3D cloth mesh...

article

Determination of parameters of double-ellipsoidal heat source model based on optimization method

Y. Gu, Y. D. Li, Y. Yong, F. L. Xu, more

Welding in the World > 2019 > 63 > 2 > 365-376

To determine the parameters of the double-ellipsoidal heat source model (DEHSM) in welding simulations, a technique is developed to extract the parameters of weld pool shape from the simulation results. The technique is developed based on the knowledge of the isoparametric transformation and computer graphics, and its validity is verified by a graphic comparison. It is shown that the technique can...

article

A study of fatigue crack growth from artificial corrosion pits at welded joints under complex stress fields

Z. Y. Jie, Y. D. Li, X. Wei

Fatigue & Fracture of Engineering Materials & Structures > 40 > 9 > 1364 - 1377

The paper studies the effects of artificial corrosion pits and complex stress fields on the fatigue crack growth of full penetration load‐carrying fillet cruciform welded joints with 45° inclined angle. Parameters of fatigue crack growth rate of welded joints are obtained from S‐N curves under different levels of corrosion. A numerical method is used to simulate fatigue crack growth using different...

article

Welding distortion prediction based on local displacement in the weld plastic zone

Y. Gu, Y. D. Li, B. Qiang, D. D. Boko-haya

Welding in the World > 2017 > 61 > 2 > 333-340

For a welding procedure with grooves or filler materials, to avoid underestimating the welding distortion in predictions based on the residual plastic strain, a prediction approach is proposed to estimate the welding distortion based on the local displacement in the weld plastic zone, and the proposed method is verified using the thermal elastic–plastic finite element method. Additionally, the welding...

article

The Dynamics of Core and Outer Micro-turbulence During the L–I–H Confinement Transition on the EAST Superconducting Tokamak

G. M. Cao, Y. D. Li, Q. Li, X. D. Zhang, more

Journal of Fusion Energy > 2015 > 34 > 6 > 1445-1450

The dynamics of the core and outer micro-turbulence during the low–intermediate–high (L–I–H) confinement transition have been investigated simultaneously by a tangential CO₂ laser collective scattering system on EAST. It is found that, the intensity of micro-turbulence decreases most strongly near the outer region of the plasma, with less dramatic reduction deeper into the plasma. During the transition,...

article

The Dynamics of Short-Scale Turbulent Fluctuations During The H–L Back Transition in The EAST Superconducting Tokamak

G. M. Cao, Y. D. Li, Q. Li, X. D. Zhang, more

Journal of Fusion Energy > 2015 > 34 > 3 > 653-658

The dynamics of the turbulent fluctuations during the H–L back transition have been studied on EAST by a CO₂ laser collective scattering system. The limit-cycle oscillation (LCO) regime has been frequently observed during the H–L back transition, and the oscillation frequency increases gradually as the back transition is approached. In the LCO regime, both the core and outer fluctuation level have...

article

Obstruction by CO of the decomposition of methanol on Pt nanoclusters on a thin film of Al2O3/NiAl(100)

C.-S. Chao, T.-W. Liao, C.X. Wang, Y.-D. Li, more

Applied Surface Science > 2014 > 293 > Complete > 352-358

Obstructed decomposition of methanol by CO on Pt nanoclusters deposited from the vapor onto thin-film Al ₂ O ₃ /NiAl(100) was studied with various surface probe techniques. The Pt clusters had mean diameter about 2.3nm and height about 0.4nm, and grew with phase fcc and primarily in the (111) orientation. CO adsorbed molecularly on the Pt clusters to saturate the sites atop Pt, and...

article

Corrosion resistance and cytotoxicity of a MgF₂ coating on biomedical Mg–1Ca alloy via vacuum evaporation deposition method

N. Li, Y. D. Li, Y. B. Wang, M. Li, more

Surface and Interface Analysis > 45 > 8 > 1217 - 1222

To reduce the biocorrosion rate and enhance the biocompatibility by surface modification, MgF₂ coatings were prepared on Mg–1Ca alloy using vacuum evaporation deposition method. The average thickness of the coating was about 0.95 µm. The results of immersion test and electrochemical test indicated that the corrosion rate of Mg–1Ca alloy was effectively decreased after coating with MgF₂. The MgF₂ coating...

chapter

Load impedance estimation and iterative-learning control for a three-phase four-wire inverter

T.-F. Wu, L.-C. Lin, C.-H. Chang, Y.-R. Chang, more

2013 IEEE ECCE Asia Downunder > 1275 - 1281

2013 IEEE ECCE Asia Downunder (ECCE Asia 2013)

This paper presents a load impedance estimation and iterative-learning control for a three-phase four-wire inverter. The topology of a three-phase four wire inverter is adopted to uninterruptible power supply (UPS) applications, which can supply unbalanced load, linear load and rectified load. The proposed load impedance estimation scheme employs an RLC equivalent circuit concept to determine the...

chapter

Iterative learning control with filter-capacitor current compensation for a three-phase four-wire inverter

T.-F. Wu, L.-C. Lin, C.-H. Chang, Y.-R. Chang, more

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) > 2288 - 2294

2013 IEEE Applied Power Electronics Conference and Exposition - APEC 2013

This paper presents an iterative learning control with filter-capacitor current compensation for a three-phase four-wire inverter, which is adopted to uninterruptible power supply (UPS) applications. It can supply unbalanced, linear and rectified loads. With the proposed iterative learning control, the steady-state error can be reduced significantly cycle by cycle, and it is allowed to have wide inductance...

article

Seed losses at harvest and seed persistence of oilseed rape (Brassica napus) in different cultural conditions in Chinese farming systems

Y M ZHU, Y D LI, N COLBACH, K P MA, more

Weed Research > 52 > 4 > 317 - 326

Zhu YM, Li YD, Colbach N, Ma KP, Wei W & Mi XC (2012). Seed losses at harvest and seed persistence of oilseed rape (Brassica napus) in different cultural conditions in Chinese farming systems. Weed Research52, 317–326. SummaryThis article reports experiments that explore the critical factors for gene flow in oilseed rape (Brassica napus) via the soil seedbank under Chinese farming systems. Research...

article

Experimental research on resolution improvement in CW THz digital holography

Q. Li, S. H. Ding, Y. D. Li, K. Xue, more

Applied Physics B > 2012 > 107 > 1 > 103-110

High-resolution continuous-wave terahertz (CW THz) real-time imaging operating at 2.52 THz is demonstrated based on THz digital holographic technique. To eliminate the influence of zero-order diffraction while reducing the recording distance, effective zero-order diffraction suppression methods are studied and compared. The spatial resolution of the imaging system is tested by imaging a self-made...

article

Collinear unequal crack series in magnetoelectroelastic materials: Anti‐plane case

Y.‐D. Li, K.Y. Lee, J.‐W. Pan

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für... > 91 > 9 > 743 - 752

The purpose of the present work is to study collinear unequal crack series in magnetoelectroelastic materials, which are of more practical significance than the widely studied collinear equal cracks. Fracture analysis is performed by the combined methods of distributed generalized dislocations, Green's function and singular integral equations (SIEs). The theoretical derivation is validated by the...

article

Treatment of Budd-Chiari syndrome with urokinase following predilation in patients with old inferior vena cava thrombosis

P. -X. Ding, Y. -D. Li, X. -W. Han, G. Wu, more

La radiologia medica > 2011 > 116 > 1 > 56-60

Purpose This study was undertaken to evaluate the safety and feasibility of thrombolytic urokinase treatment after predilation in patients with Budd-Chiari syndrome (BCS) with chronic inferior vena cava (IVC) thrombosis. Materials and methods Between December 2006 and September 2009, 13 consecutive BCS patients with chronic IVC thrombosis were treated with continuous urokinase infusion after predilation...

article

An integrated, self-expanding, Y-shaped, metallic stent for patients with complex obstruction after gastrojejunostomy (Billroth II): initial experience

G. Wu, Y. -D. Li, X. -W. Han, P. -X. Ding

La radiologia medica > 2011 > 116 > 5 > 759-765

Purpose This paper reports our initial experience with an integrated, self-expandable, Y-shaped, metallic stent (SEMS) for patients with complex anastomotic obstructions after gastrojejunostomy (Billroth II). Materials and methods Eight consecutive patients with complex anastomotic obstructions involving the afferent and efferent loops after gastrojejunostomy (Billroth II) were treated with an integrated...

article

Outcome of a retrieval stent filter and 30mm balloon dilator for patients with Budd–Chiari syndrome and chronic inferior vena cava thrombosis: a prospective pilot study

P.-X. Ding, X.-W. Han, G. Wu, Y.-D. Li, more

Clinical Radiology > 2010 > 65 > 8 > 629-635

To evaluate the mid-term safety and efficacy of a retrieval stent filter and 30mm balloon dilator in the treatment of Budd–Chiari syndrome (BCS) patients with chronic inferior vena cava (IVC) thrombosis.Twenty-three consecutive patients with BCS and chronic IVC thrombosis were treated with a retrieval stent filter and a 30mm balloon dilator, and subsequently underwent color Doppler ultrasound follow-up...

article

Temporary self‐expanding metallic stents and pneumatic dilation for the treatment of achalasia: a prospective study with a long‐term follow‐up

Y.‐D. Li, Y.‐S. Cheng, M.‐H. Li, N.‐W. Chen, more

Diseases of the Esophagus > 23 > 5 > 361 - 367

The present study compares the efficacy of a self‐expanding metallic stent (SEMS, diameter of 30 mm) and pneumatic dilation for the long‐term clinical treatment of achalasia. A total of 155 patients diagnosed with achalasia were allocated for pneumatic dilation (n= 80, group A) or a temporary, 30‐mm diameter SEMS (n= 75, group B). The SEMSs were placed under fluoroscopic guidance and removed by gastroscopy...

article

The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime

Y. D. Li, S. M. Chen, Y. B. Liu, Z. G. Yang, more

Journal of Materials Science > 2010 > 45 > 3 > 831-841

In this study, the effect of hydrogen on fatigue strength of high strength steels in the very high cycle fatigue regime was further discussed. It is found that the calculated results of fatigue strength by modified Murakami’s expression are in good accordance with the experimental results in ±15% error band. The relationship between fatigue life (N_f) and the ratio of granular-bright facet (GBF) to...

article

Grain refinement of AM60B magnesium alloy by SiC particles

T. J. Chen, Y. Ma, W. B. Lv, Y. D. Li, more

Journal of Materials Science > 2010 > 45 > 24 > 6732-6738

AM60B alloy has been refined by SiC particles and the corresponding refining mechanism has been mainly discussed. The results indicate that the addition of 0.2 wt% SiC particles in form of mixture with Mg powder decreases the grain size from 317 μm of the not refined alloy to 46 μm. The decrease of β phase and formation of Mg₂Si and Al₄C₃ phases well demonstrate that the reactions of 3SiC + 4Al = Al...

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Search results for: Y. D. Li

D‐Cloth: Skinning‐based Cloth Dynamic Prediction with a Three‐stage Network

N‐Cloth: Predicting 3D Cloth Deformation with Mesh‐Based Networks

Determination of parameters of double-ellipsoidal heat source model based on optimization method

A study of fatigue crack growth from artificial corrosion pits at welded joints under complex stress fields

Welding distortion prediction based on local displacement in the weld plastic zone

The Dynamics of Core and Outer Micro-turbulence During the L–I–H Confinement Transition on the EAST Superconducting Tokamak

The Dynamics of Short-Scale Turbulent Fluctuations During The H–L Back Transition in The EAST Superconducting Tokamak

Obstruction by CO of the decomposition of methanol on Pt nanoclusters on a thin film of Al2O3/NiAl(100)

Corrosion resistance and cytotoxicity of a MgF₂ coating on biomedical Mg–1Ca alloy via vacuum evaporation deposition method

Load impedance estimation and iterative-learning control for a three-phase four-wire inverter

Iterative learning control with filter-capacitor current compensation for a three-phase four-wire inverter

Seed losses at harvest and seed persistence of oilseed rape (Brassica napus) in different cultural conditions in Chinese farming systems

Experimental research on resolution improvement in CW THz digital holography

Collinear unequal crack series in magnetoelectroelastic materials: Anti‐plane case

Treatment of Budd-Chiari syndrome with urokinase following predilation in patients with old inferior vena cava thrombosis

An integrated, self-expanding, Y-shaped, metallic stent for patients with complex obstruction after gastrojejunostomy (Billroth II): initial experience

Outcome of a retrieval stent filter and 30mm balloon dilator for patients with Budd–Chiari syndrome and chronic inferior vena cava thrombosis: a prospective pilot study

Temporary self‐expanding metallic stents and pneumatic dilation for the treatment of achalasia: a prospective study with a long‐term follow‐up

The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime

Grain refinement of AM60B magnesium alloy by SiC particles

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