A5054533641- Advanced Frequency and Time Standards
- Optical Systems and Laser Technology
- Holomorphic and Operator Theory
- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Advanced Harmonic Analysis Research
- Sustainable Supply Chain Management
- Quantum optics and atomic interactions
- Wireless Networks and Protocols
- Algebraic and Geometric Analysis
- Photorefractive and Nonlinear Optics
- Atomic and Subatomic Physics Research
- Advanced Measurement and Metrology Techniques
- Supply Chain and Inventory Management
- Hemodynamic Monitoring and Therapy
- Scientific Measurement and Uncertainty Evaluation
- Analog and Mixed-Signal Circuit Design
- Advanced DC-DC Converters
- Advanced Wireless Network Optimization
- Innovative Energy Harvesting Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Analytic and geometric function theory
- Energy Harvesting in Wireless Networks
- Meromorphic and Entire Functions
- Advanced MIMO Systems Optimization
Peking University
2023-2025
Liaoning University
2024
First Hospital of Shanxi Medical University
2024
Shanxi Medical University
2024
Shanxi University
2021-2022
Xidian University
2020-2022
State Key Laboratory of Quantum Optics and Quantum Optics Devices
2022
Chinese Academy of Sciences
2009-2021
University of Chinese Academy of Sciences
2011-2021
Shanghai Institute of Microsystem and Information Technology
2016-2021
Heterogeneous wireless networks give rise to a multi-radio access environment which becomes crucial for load balancing avoid network congestion and providing high quality services maximize radio resource utilization. To this end, joint power bandwidth allocation with QoS support algorithm is proposed using convex optimization method in letter. The achieves the goal of total system capacity maximization, while efficiently satisfying minimum rate constraint delay-constraint service traffic...
We demonstrated a compact rubidium optical clock, which includes an frequency standard and comb, with path volume of merely 11.6 liters. The laser is stabilized to the hyperfine transitions D2 line using modulation transfer spectroscopy (MTS), eliminites Doppler background provides high signal noise ratio sensitivity. A 300 MHz microwave signal, whose phase exactly tracks that (OFC), generated via yielding instability 1.89 E-13@1 s 5.27 E-14@1000 in electronic domain. To best our knowledge,...
Chip-scale atomic clocks are critical for applications requiring compact, energy-efficient, and highly stable timing, such as GPS receivers communication systems. Coherent population trapping (CPT)-based clocks, which commonly use vertical-cavity surface-emitting lasers (VCSELs), have enabled significant miniaturization. However, their precision is limited by the broad linewidth of VCSELs. Alternative laser technologies, distributed Bragg reflector lasers, feedback external cavity diode...
Phase matching is a necessary condition for achieving high-efficiency optical-frequency conversion. To date, practical means of accomplishing phase in homogeneous crystals remain limited, despite considerable efforts. Herein, we report new class methods aimed at quasiperfect matching, based on controllable birefringence produced via the linear electro-optic effect, termed ``voltage-tuning matching.'' The wave vectors induced polarization and generated fields can be matched maintained along...
A compensation method for phase mismatch caused by temperature variation during the frequency conversion process is proposed and theoretical model established. The based on principle that can be compensated via electro-optic effect a scheme consisting of two nonlinear crystals an crystal; further, new dimension adjustment achieved changing voltage. In proof-of-principle study, from 1053 nm to 526.5 351 cascade KH2PO4 (KDP) KD2PO4 (DKDP) crystals, respectively, presented as example....
In this paper we obtain a sufficient and necessary condition for an analytic function f on D with Hadamard gaps, that is, satisfying n k+1 / k ≥ λ 1 all , to belong kind of space consisting functions . The special cases these spaces are BMOA VMOA view our result can answer the open question given recently by Stroethoff.
Background Although liver metabolic dysfunction has been found to potentially elevate susceptibility cognitive impairment and dementia, there is still insufficient evidence explore the non-linear association of enzymes with performance. Therefore, we aimed elucidate relationship between Methods In this cross-sectional study, 2764 individuals aged ≥ 60 who participated in National Health Nutrition Survey (NHANES) 2011 2014 were included. The primary data comprised enzyme levels (alkaline...
An ultra-low quiescent current resistor-less power on reset circuit is presented in this brief. The used energy harvesting systems to change boost converter from startup state PWM modulation state. It integrates (POR) and brown out detection (BOD) functions without resistors or bandgaps overhead. Dual threshold (DTD) technology instead of a large size delay cell generation pulse signals. has been implemented 0.13μm standard CMOS technology. active area the are 154.4μm x 26.8μm about 1nA,...
In the process of globalization, customer demand is usually difficult to predict, and product recycling generally achieve accurately. It also urgent deal with increased inventory while avoiding shortages, purpose reducing supply chain risks. This study analyzes integrated decision-making problem in random return environment. proposes a multi-objective optimization model, which an effective tool solve design planning problems global closed-loop chain. consists multi-period, single-product...
Purpose The promotion of new energy vehicles (EVs) is an effective way to achieve low carbon emission reduction. This paper aims investigate the optimal pricing automotive supply chain members in context dual policy implementation while considering consumers' low-carbon preferences. Design/methodology/approach article takes manufacturers, retailers and consumers a main three-level as research object. Stackelberg game theory used theoretical guidance. A model which manufacturer leader...
The decision‐making and coordination of an e‐commerce supply chain (ECSC) with consumer preferences are studied. In this paper, the ECSC, consisting a single manufacturer platform, is considered, optimal decisions made for two scenarios, namely, decentralized centralized decision models. Then, comparative analysis performed mechanism “revenue sharing” proposed based on decentralization, finally, numerical used to verify conclusions. theoretical results show that platform less profitable than...
With improvements in consumers’ environmental awareness and the promulgation of regulations, an increasing number companies are beginning to pay attention green product design, pricing, purchasing strategies. However, due demand fluctuations cost changes brought about by design manufacturing, understanding corporate behavior preferences constructing non‐single‐period pricing procurement strategies can profoundly affect long‐term cooperation among supply chain members. This paper constructs...
Multi-access for multi-mode terminals is possible in heterogeneous networks environment which becomes a critical issue transmission parallel with meeting user quality of service (QoS) performance requirements and throughput maximization. The previous optimal resource allocation schemes, do not consider type, may allocate scarce radio resources inefficiently. To solve this, we propose an algorithm distinguishing the services traffic into two classes: Delay-Constraint (DC) Best-Effort (BE). In...
We demonstrate a dual-wavelength optical frequency standard based on the dual-optical-transition modulation transfer spectroscopy (DOT-MTS) between different quantum transitions of rubidium D1 (795 nm) and D2 (780 lines. In single atomic ensemble, sidebands from 780 nm pump beam are simultaneously transferred to both 795 probe lasers. The DOT-MTS enables simultaneous stabilization lasers vapor cell. Both exhibit instability in low 10$^{-14}$ range at 1 s averaging, as estimated residual...
As one of the most promising candidates for nonvolatile memory, phase change memory (PCM) technology has shown great performance advantages in market applications. However, conventional test methods have not kept pace with development. In this article, focusing on specific PCM faults and others, an enhanced march algorithm is proposed to achieve 100% fault coverage diagnostic accuracy bit-oriented PCM. The then converted word-oriented equipped capability detect potential intraword impact....