Qing Li

ORCID: 0000-0002-1772-9194
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About
Contact & Profiles
Research Areas
  • Satellite Communication Systems
  • Opportunistic and Delay-Tolerant Networks
  • IoT and Edge/Fog Computing
  • Age of Information Optimization
  • Optical Network Technologies
  • Advanced Optical Network Technologies
  • Mobile Ad Hoc Networks
  • Energy Efficient Wireless Sensor Networks
  • Cloud Computing and Resource Management
  • Distributed systems and fault tolerance
  • Advanced Photonic Communication Systems
  • Distributed and Parallel Computing Systems
  • Wireless Networks and Protocols
  • Epigenetics and DNA Methylation
  • Semiconductor Lasers and Optical Devices
  • Genomics and Chromatin Dynamics
  • Caching and Content Delivery
  • DNA Repair Mechanisms
  • Advanced Wireless Network Optimization
  • Energy Harvesting in Wireless Networks
  • Advanced MIMO Systems Optimization
  • Anomaly Detection Techniques and Applications
  • Advanced Fiber Optic Sensors
  • Air Traffic Management and Optimization
  • Photonic and Optical Devices

Peking University
2013-2025

Center for Life Sciences
2016-2024

Beijing University of Posts and Telecommunications
2009-2024

Peng Cheng Laboratory
2023-2024

Institute of Electronics
2020

University of Cambridge
2019

Network Technologies (United States)
2018

Nanyang Technological University
2016

Mayo Clinic
2013

WinnMed
2013

DNA replication-coupled (RC) nucleosome assembly is mediated by histone chaperones and fundamental for epigenetic inheritance maintenance of genomic integrity. The mechanisms that promote this process are only partially understood. Here, we show the chaperone FACT (facilitates chromatin transactions), consisting Spt16 Pob3, promotes newly synthesized H3-H4 deposition. We describe an allele (spt16-m) has a defect in binding to impairs their deposition onto DNA. Consistent with direct role RC...

10.1016/j.celrep.2015.12.096 article EN cc-by-nc-nd Cell Reports 2016-01-21

Recently, increasing investments in satellite-related technologies make the low earth orbit (LEO) satellite constellation a strong complement to terrestrial networks. To mitigate limitations of traditional "bent-pipe" architecture, edge computing (SEC) has been proposed by placing resources at LEO constellation. Most existing works focus on space-air-ground integrated network architecture and SEC framework. Beyond these works, we are first investigate how efficiently deploy services nodes...

10.1109/jiot.2021.3085129 article EN IEEE Internet of Things Journal 2021-05-31

The space industry experiences a rise in low-Earth-orbit satellite mega-constellations to achieve universal connectivity. At the same time, cloud firms (such as Google, Microsoft, and AWS) also have ambitions for computing offer public services orbit. Satellite computing, new emerging concept, is promising enable paradigms on-orbit autonomy, remote sensing, edge other areas by empowering satellites with resources. However, LEO bring inherent challenges networking, others due moving core...

10.1109/jiot.2023.3303346 article EN IEEE Internet of Things Journal 2023-08-08

In the wake of rapid deployment large-scale low-Earth orbit satellite constellations, exploiting full computing potential Commercial Off-The-Shelf (COTS) devices in these environments has become a pressing issue. However, understanding this problem is far from straightforward due to inherent differences between terrestrial infrastructure and platform space. paper, we take an important step towards closing knowledge gap by presenting first measurement study on thermal control, power...

10.1145/3636534.3649371 article EN mit Proceedings of the 28th Annual International Conference on Mobile Computing And Networking 2024-05-29

Satellite network is the first step towards interstellar voyages. It can provide global Internet connectivity everywhere on earth, where most areas cannot access by terrestrial infrastructure due to geographic accessibility and high deployment cost. The space industry experiences a rise in large low-earth-orbit satellite constellations achieve universal connectivity. research community also urgent do some leading bridge divide. Researchers now conduct their work simulation, which far from...

10.1109/edge53862.2021.00022 article EN 2021-09-01

The cloud-assisted mobile edge computing system is a critical architecture to process computation-intensive and delay-sensitive applications in close proximity users with high resource efficiency. Due the heterogenous dynamics of task arrivals at nodes distributed nature system, workloads are prone be unbalanced, which can cause response time cost. This paper solves dynamic scheduling problem (including both peer among cross-layer from cloud), aiming minimizing average within budget limit....

10.1109/tmc.2021.3115262 article EN IEEE Transactions on Mobile Computing 2021-09-24

Abstract Objective: Timely access to essential patient information is critical for informed, data-driven decision-making in clinical nursing enhance care efficiency and quality. Despite advancements electronic health records, many medical reports remain paper form, posing challenges data analysis application. This study aimed develop ChatSchema, a pipeline based on Large Multimodal Models (LMMs) extracting structured from paper-based reports, evaluated its effectiveness pilot setting....

10.1097/nr9.0000000000000081 article EN cc-by-nc-nd Interdisciplinary Nursing Research 2025-01-31

Spoofing is a serious threat for both ad hoc and sensor networks, that can cause adverse effects on network's operations. Although cryptographic authentication assure the identity of transmitter, not always desirable or possible as it requires key management more extensive computations. In this paper we argue to have functionality complementary traditional detect device spoofing with no dependency material. Towards objective, propose using forge-resistant relationships associated transmitted...

10.1109/sahcn.2006.288408 article EN 2006-01-01

The space-air-ground integrated network (SAGIN) is regarded as a promising approach for providing ubiquitous Internet access anytime and anywhere. With virtualization technologies multi-access edge computing, data transmission processing in SAGINs are abstracted services. Space-air-ground service computing flexibly integrates manages these services based on service-oriented architecture. However, it significant but very challenging to provide of Things with high QoS due the distributed...

10.1109/mnet.111.2100153 article EN IEEE Network 2021-09-01

Satellite edge computing can incur dramatically increased energy demand onboard, which is met by satellite batteries during eclipses. Excessive usage regular operations accelerates battery wear. Therefore, it important and timely to optimize the consumption onboard extend life. This paper investigates battery-aware optimization for under harvesting dynamics wireless environment uncertainty. Inspired periodical satellite-ground connection, we develop a pattern-aware online scheduling...

10.1109/tsc.2024.3359233 article EN IEEE Transactions on Services Computing 2024-01-29

In mobile edge computing networks, densely deployed access points are empowered with computation and storage capacities. This brings benefits of enlarged capacity, ultra-low latency, reduced backhaul congestion. paper concerns node grouping in computing, where multiple nodes serve one end user cooperatively to enhance experience. Most existing studies focus on centralized schemes that have collect global information thus induce high overhead. Although some recent propose efficient...

10.1109/tmc.2021.3139362 article EN IEEE Transactions on Mobile Computing 2021-12-31

In this paper a polar coding scheme for ultraviolet communication (UVC) systems is proposed and experimentally implemented to address the high path loss propagation, which severely deteriorates performance. Firstly, we analyze property of in optical domain by applying particle-wave duality existing model. Considering characteristic UV channel, design code with specific channel correlations, study computational complexity terms length. A new theoretical Bhattacharyya upper-bound general codes...

10.1364/oe.25.028630 article EN cc-by Optics Express 2017-11-03

The on-orbit processing of massive satellite-native data relies on powerful computing power. Satellite has started to gain attention, with researchers proposing various algorithms, applications, and simulation testbeds. Unfortunately, a practical platform for deploying satellite is currently lacking. As result, the industry needs make relentless efforts achieve this goal. We suggest using cloud-native technology enhance power LEO satellites. first main Tiansuan constellation, BUPT-1,...

10.1109/edge60047.2023.00048 article EN 2023-07-01

Prediction of congestion degree is critical for optical networks to cooperate with the network control strategies. Proposed in this paper a method prediction based on BP artificial neural network. The principles are presented, and simulation results show that our proposed competent prediction.

10.1109/icocn.2017.8323105 article EN 2022 20th International Conference on Optical Communications and Networks (ICOCN) 2017-08-01

Air traffic flow scheduling is an important component in air control system and has significant effects on the safety efficiency of transportation. In this paper, we propose a sector-based distributed strategy to minimize airport arrival delay. The problem formulated based simplified model consisting sectors, air-routes, waypoints airports. A cell transmission dynamic adopted describe dynamics some safety-based constraints such as sequence en-routed aircraft limitations cruising speeds are...

10.1016/j.ifacol.2016.07.061 article EN IFAC-PapersOnLine 2016-01-01

In order to resolve problems such as server's weight described inaccurately, load balancing schedule inefficiently and so on, which exist in the traditional algorithms Based on server cluster, a kind of adaptive weighted least-load algorithm is founded this article. The nodes are divided into mild non-mild nodes. servers polled node selected response users' requests directly when user-connection arrival. If there no weights adjusted adaptively according connection status, has minimum ratio...

10.1109/ihmsc.2013.60 article EN 2013-08-01

We report a newly synthesized blue fluorescent fluorinated 9,9'-spirobifluorene based host material Spiro-(3,5)-F and its application in organic light-emitting device. has high thermal stability with the decomposition temperature of 395 °C glass transition 145 °C. An device using as 4,4'-bis(9-ethyl-3-carbazovinylene)-1,1'-biphenyl dopant exhibits low turn-on voltage 3.5 V, maximum current efficiency 6.51 cd A−1, external quantum 3.85%, implying good energy transfer performances. Moreover,...

10.1364/ome.6.002545 article EN cc-by Optical Materials Express 2016-07-13

Air traffic flow management is an important component in air control system and has significant effects on the safety efficiency of transportation. In this paper, we propose a distributed strategy to minimize airport departure arrival schedule deviations. The scheduling problem formulated based en-route model consisting routes, waypoints airports. A cell transmission dynamic adopted describe dynamics under related constraints such as capacities routes airports, aircraft speed limits. Our...

10.1109/cdc.2016.7798411 article EN 2016-12-01

It is a key requirement for any perimeter intrusion detection system to distinguish the from environmental events without reducing efficiency. We implement and demonstrate fiber optic system, which screens event signal by its features in frequency domain. These are extracted method of principal component analysis (PCA) then identified support vector machine (SVM). Experimental results show that combination PCA SVM improve evidently anti-disturbance ability.

10.1109/icocn.2016.7875605 article EN 2022 20th International Conference on Optical Communications and Networks (ICOCN) 2016-09-01

Recently, Low Earth Orbit (LEO) satellites experience rapid development and satellite edge computing emerges to address the limitation of bent-pipe architecture in existing systems. Introducing energy-consuming components increases depth battery discharge. This will shorten batteries' life influences satellites' operation orbit. In this paper, we aim extend by minimizing discharge for observation missions. Facing challenges wireless uncertainty energy harvesting dynamics, our work develops...

10.1109/edge53862.2021.00010 article EN 2021-09-01

The performance of a two-tier LEO/MEO satellite network including inter-satellite links (ISL's) is analyzed. Specific emphasis laid on the design an ATM-based routing scheme for ISL part system (MEO layer). approach to prepare virtual topology by means path connections (VPC's) connecting all pairs end nodes in sub-network complete period advance, similar implementing set (time dependent) tables. search available end-to-end routes within based new Algorithm (S-DRA) integrates advantages...

10.1109/apcc.2005.1554029 article EN Asia-Pacific Conference on Communications 2005-12-13

In the fiber optic perimeter security system, which is based on Mach-Zehnder interferometer, human intrusion and partial environmental noise can cause vibration. Distinguishing from events without reducing efficiency a key requirement for any detection systems. this paper, an signal classification system presented recognition. This compares event features, are frequency domain time respectively. Firstly, research analyzes data extraction engineering. model preprocesses time-domain according...

10.1109/wocc.2016.7506584 article EN 2016-05-01
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