2,481 research outputs found
Presentation3 – Supplemental material for Changes in corneal biomechanics during pregnancy in Chinese healthy female
No full textSupplemental material, Presentation3 for Changes in corneal biomechanics during pregnancy in Chinese healthy female by Yaping Yang, Jun Ye, Tsz Kin Ng, Na Wu, Xinghuai Sun, Yaping Chen and Yuhong Chen in European Journal of Ophthalmology</p
Supplement_figure_1 – Supplemental material for Changes in corneal biomechanics during pregnancy in Chinese healthy female
No full textSupplemental material, Supplement_figure_1 for Changes in corneal biomechanics during pregnancy in Chinese healthy female by Yaping Yang, Jun Ye, Tsz Kin Ng, Na Wu, Xinghuai Sun, Yaping Chen and Yuhong Chen in European Journal of Ophthalmology</p
Presentation2 – Supplemental material for Changes in corneal biomechanics during pregnancy in Chinese healthy female
No full textSupplemental material, Presentation2 for Changes in corneal biomechanics during pregnancy in Chinese healthy female by Yaping Yang, Jun Ye, Tsz Kin Ng, Na Wu, Xinghuai Sun, Yaping Chen and Yuhong Chen in European Journal of Ophthalmology</p
Multi-objective imperfect maintenance for dependent competing risk systems with multiple degradation processes
No full textMultiple competing risks are one of the important topics in reliability field, especially degradation processes and random shocks. This research aims to relax the independent assumption by considering that there exist dependent relationships not only among multiple degradation measures but also between degradation measure and random shocks. In reality, many systems have multiple components with more than one degradation measure which is dependent with each other due to their interplaying functions or common usage history. Independent assumption may underestimate system reliability estimation under many cases. Random shocks will also contribute to the system failure through two ways: (1) one is working directly on the degradation processes; (2) the other is causing immediate failure to the system. We develop a new methodology to formulate the reliability prediction model for the gradually degradating systems subject to multiple dependent competing risks of degradation processes and random shocks. Two kinds of random shocks are considered: (1) fatal shocks, which fail the system immediately; (2) non-fatal shocks, which exhibit two effects on the system degradation process, including sudden degradation increment and degradation rate acceleration. The dependency between degradation processes and random shocks are modulated by a time-scaled covariate factors while the dependency among degradation processes are fitted by copula method. Also the reliability and state probability estimation for the systems are derived under the research scope of multi-state system using both analytical and Monte Carlo simulation for the dependent competing-risk systems. Different maintenance policy models involving imperefect preventive maintenance for this dependent model are introducted and compared with each other. Multi-objective optimization is applied to consider two important targets simultaneously in maintenance issues, including long-run expected cost rate and system availability.Ph. D.Includes bibliographical referencesIncludes vitaby Yaping Wan
Gain Equalization for Few-Mode Erbium-Doped Fiber Amplifiers via Strong Mode Coupling
No full textFew-mode erbium-doped fiber amplifiers (FM-EDFAs) are one of the most important optical subsystems for successful space division multiplexed transmission systems. In this paper, we propose a new FM-EDFA designed to achieve significantly reduced differential modal gain (DMG) via strong mode coupling. Using a new numerical model based on a fiber transfer matrix, the DMGs of FM-EDFAs are systematically investigated and two different types of six-mode fiber amplifiers are analyzed, as exemplar demonstrations. In a uniformly doped step-index fiber, the DMG can be reduced from 9.3 to 1.1 dB (i.e., 8.2 dB reduction) and further reduced to 0.5 dB in a dual-layer doping structure
Triply periodic bicontinuous structures as templates for photonic crystals: a pinch-off problem
No full textTriply periodic diamond, cubic, and gyroid structures are studied as templates for the fabrication of 3D photonic crystals (see figure). The achievable backfilling volume fraction and bandgap properties are analyzed by considering the pinch-off of level surfaces. The conformal coating on such templates is found to result in incomplete filling and loss of the photonic bandgap. An attempt to solve this problem is made by using electrophoretic deposition, which results in a nearly completely filled 3D titania structure.Office of Naval Research (ONR); Grant Number: N00014-05-0303
NSF NIRT; Grant Number: ECS-0303981
3M Nontenured Faculty Grant
Korea Research Foundation postdoc fellowship; Grant Number: KRF-2005-000-10299
Creative Research Initiative Program of MOST/KOSE
sj-docx-1-cll-10.1177_09636897231154579 – Supplemental material for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model
No full textSupplemental material, sj-docx-1-cll-10.1177_09636897231154579 for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model by Yaping Shi, Yunfei Liu, Bichao Zhang, Xiaoying Li, Juntang Lin and Ciqing Yang in Cell Transplantation</p
Wideband and Low-Loss Mode Scrambler for Few-Mode Fibers Based on Distributed Multiple Point-Loads
No full textWe propose a new type of all-fiber mode scrambler for mode division multiplexed data transmission based on few mode fibers. By randomly placing multiple point-loads along the fiber length, low loss and wideband mode coupling is obtained amongst all the guided modes. The effect of mode coupling is simulated from a single point-load to multiple point-loads with a specific focus on the insertion loss and wavelength dependence. In an exemplar experimental demonstration we present a mode scrambler for step-index two mode fibers incorporating 150 randomly located point-loads. Uniform mode coupling is achieved over the C band with an insertion loss of less than 1 dB
sj-jpg-3-cll-10.1177_09636897231154579 – Supplemental material for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model
No full textSupplemental material, sj-jpg-3-cll-10.1177_09636897231154579 for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model by Yaping Shi, Yunfei Liu, Bichao Zhang, Xiaoying Li, Juntang Lin and Ciqing Yang in Cell Transplantation</p
sj-docx-2-cll-10.1177_09636897231154579 – Supplemental material for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model
No full textSupplemental material, sj-docx-2-cll-10.1177_09636897231154579 for Human Menstrual Blood–Derived Endometrial Stem Cells Promote Functional Recovery by Improving the Inflammatory Microenvironment in a Mouse Spinal Cord Injury Model by Yaping Shi, Yunfei Liu, Bichao Zhang, Xiaoying Li, Juntang Lin and Ciqing Yang in Cell Transplantation</p
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