A5105931366- Distributed systems and fault tolerance
- Atmospheric chemistry and aerosols
- Age of Information Optimization
- Caching and Content Delivery
- Blockchain Technology Applications and Security
- Petri Nets in System Modeling
- Atmospheric aerosols and clouds
- Interconnection Networks and Systems
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Advanced Data Storage Technologies
- Fuzzy Systems and Optimization
- Surface Modification and Superhydrophobicity
- Dental Implant Techniques and Outcomes
- Air Quality Monitoring and Forecasting
- Optimization and Mathematical Programming
- Antenna Design and Optimization
- Mathematical Inequalities and Applications
- Real-Time Systems Scheduling
- Multi-Criteria Decision Making
- Advanced Differential Geometry Research
- Direction-of-Arrival Estimation Techniques
- Point processes and geometric inequalities
- Optimization and Variational Analysis
- Speech and Audio Processing
Beijing Institute of Technology
2022-2023
Technische Universität Braunschweig
2015-2018
Institute of Atmospheric Physics
2015
Chinese Academy of Sciences
2015
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry
2015
Abstract. Four extreme haze episodes occurred in October 2014 the North China Plain (NCP). To clarify formation mechanism of hazes autumn, strengthened observations were conducted Beijing from 5 to 2 November. The meteorological parameters, satellite data, chemical compositions and optical properties aerosols obtained. originated NCP, developing southwest northeast directions, with highest concentration PM2.5 469 μg m−3 Beijing. NCP was dominated by a weak high pressure system during...
The ozone over the Tibetan Plateau (TP) plays an important role in protecting local ecology by absorbing ultraviolet solar rays. El Niño-Southern Oscillation (ENSO), recognized as strongest interannual climate phenomenon globally, can create variations TP. Based on historical experimental simulation results of two Community Earth System Models (i.e. CESM2-WACCM and CESM2-WACCM-FV2) that include coupling process stratospheric chemistry-radiation-dynamics, this study analyzes impact ENSO...
The combination of flexible electronics and plant science has generated various plant-wearable sensors, yet challenges persist in their applications real-world agriculture, particularly high-throughput settings. Overcoming the trade-off between sensing sensitivity range, adapting them to a wide range crop types, bridging gap sensor measurements biological understandings remain primary obstacles. Here we introduce PlantRing, an innovative, nano-flexible system designed address aforementioned...
We focus on the problem of computing tight deadline miss models for real-time systems, which bound number potential misses in a given sequence activations task. In practical applications, such guarantees are often sufficient because many systems fact not hard real-time. Our major contribution is general formulation that context where some tasks occasionally experience sporadic overload. Based this new formulation, we present an algorithm can take into account fine-grained effects overload at...
Recently proposed Byzantine fault-tolerant (BFT) systems achieve high throughput by processing requests in parallel. However, as their agreement protocols rely on a single leader and make big efforts to establish global total order all before execution, the performance scalability of such approaches is limited. To address this problem we present SAREK, parallel ordering framework that partitions service state exploit parallelism during both well execution. SAREK utilizes request dependency...
Byzantine fault tolerant (BFT) consensus protocols are becoming an appealing solution to blockchains. As most blockchain systems deployed on Wide Area Networks (WANs), with each node acting behalf of its entity, partially synchronous BFT that rely network synchrony elect a single leader can be ill-suited. In contrast, asynchronous have no such timing assumptions. Existing confront challenges in terms both flexibility and performance.
Abstract. Four extreme haze episodes occurred in October 2014 the North China Plain (NCP). To clarify formation mechanism of hazes autumn, strengthened observations were conducted Beijing from 5 to 2 November. The meteorological parameters, satellite data, chemical compositions and optical properties aerosols obtained. originated NCP, developing southwest northeast directions, with highest concentration PM2.5 469 μg m−3 Beijing. NCP was dominated by a weak high pressure system during...
State machine replication (SMR) uses consensus as its core component for reaching agreement among a group of processes, in order to provide fault-tolerant services. Most SMR protocols, such Paxos and Raft, are designed the partial synchrony model. Partially synchronous protocols rely on timing assumptions elect special role (such leader), which may become performance bottleneck under heavy workload. From an engineering perspective, partially have wait pre-defined period time implement...
Recently there is a number of scenarios such as vehicle platooning, UAV swarms and cooperative robots, where group autonomous entities needs to make joint decisions operate effectively. Distributed agreement protocols can play key role establish common view on context parameters coordinate actions. Due the harsh environmental conditions in some these their safety critical nature need tolerate arbitrary faults even malicious attacks. This paper presents framework for Byzantine fault tolerant...
Cooperative autonomous systems gain increasing popularity nowadays. Most of these demand for high fault-resilience, otherwise a single faulty node could render the whole system useless. This essentially calls Byzantine fault-tolerant consensus. However, in such algorithms typically only (n-1)/3 nodes can be tolerated group n and message complexity is high. Even worse, with 3 are too small to even tolerate node. In this work we present novel consensus algorithm, RATCHETA. On one hand it...
Recent research works have shown that applying parallelization to request processing in Byzantine Fault Tolerance (BFT) can bring significant performance improvement. Based on partitioned service state, parallelism is introduced both agreement and execution address scalability limitations caused by the global total order of all requests. However, case inefficient state partitioning, expensive synchronization among partitions expected, which leads a considerable loss. To improve efficiency...
Abstract The combination of flexible electronics and plant science has generated various plant-wearable sensors, yet challenges persist in their applications real-world agriculture, particularly high-throughput settings. Overcoming the trade-off between sensing sensitivity range, adapting them to a wide range crop types, bridging gap sensor measurements biological understandings remain primary obstacles. Here we introduce PlantRing, an innovative, nano-flexible system designed address...
Neutrosophic logic is frequently applied to the engineering technology, scientific administration, and financial matters, among other fields. In addition, neutrosophic linear systems can be used illustrate various practical problems. Due complexity of operators, however, solving challenging. This work proposes a new straightforward method for system equations based on structured element (NSE). Here unknown right-hand side vectors are considered as triangular numbers. Based NSE, analytical...
In permissioned blockchains, the bandwidth of consensus nodes is mainly consumed by transaction ordering and block distribution; hence, allocation nodes' makes a significant difference to system throughput. Previous research focuses on layer attempts optimize protocols improve throughput, which, however, neglects impact data distribution throughput transfers performance bottlenecks network layer. fact, overall blockchains co-determined production in This paper proposes novel flow framework...
Byzantine fault-tolerant (BFT) consensus in an asynchronous system can only tolerate up to floor[(n-1)/3] faulty processes a group of n processes. This is quite strict limit certain application scenarios, for example consisting 3 In order break through this limit, we leverage hybrid fault model, which subset the enhanced and cannot be arbitrarily except crashing. Based on propose randomized binary algorithm that executes complete asynchrony, rather than partial synchrony required by...
In modern world, most of the optimization problems are nonconvex which neither convex nor concave. The objective this research is to study a class functions, namely, strongly functions. We establish inequalities Hermite-Hadamard and Fejér type for functions in generalized sense. Moreover, we some fractional integral sense setting Riemann-Liouville operators.
Direction-of-arrival (DoA) is a critical parameter in wireless channel estimation. With the ever-increasing requirement of high data rate and ubiquitous devices communication systems, effective wideband DoA estimation desirable. In this paper, an iterative coherent signal-subspace method including three main steps each iteration proposed for two-dimensional (2D) with uniform circular array. The first step selects partial frequency points subsequent focusing process. second performs process,...