An Optimized Emergency Resources Allocation Algorithm for Large-Scale Public Emergency

2007 ◽  
Author(s):  
Su-Sheng Wang ◽  
Yan Wang ◽  
Jian Sun
Keyword(s):  
Large Scale ◽  
Resources Allocation ◽  
Allocation Algorithm ◽  
Public Emergency

A Multi-Agent Simulation Model for Water Resources Allocation and Scheduling

2012 ◽  
Vol 433-440 ◽  
pp. 1447-1452
Author(s):  
Wei Huang ◽  
Xing Nan Zhang ◽  
Jian Ying Wang
Keyword(s):  
Water Resources ◽  
Simulation Model ◽  
Large Scale ◽  
Complex Adaptive System ◽  
Modelling And Simulation ◽  
Water Diversion ◽  
Resources Allocation ◽  
Water Resources Allocation ◽  
Complex Adaptive ◽  
North Water

The South-to-North Water Diversion Eastern Route Project of China is a complex large scale system. It is important of constructing a modelling and simulation for this type of system. This paper proposes a modelling and simulation technique for large scale water project based on Agent calculation and complex adaptive system (CAS). The simulation experiment system, about multi-Agents of water resources in East CAS management features is conducted using SWARM. We demonstrate also the interaction within all kinds of objects and the behaviour of system evolvement in the course of water resources allocation and scheduling. The simulation results show the proposed simulation model effective.

scholarly journals Adjusting the Cut-Off and Maximum Pool Size in RT-qPCR Pool Testing for SARS-CoV-2

Viruses ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 557
Author(s):  
Murilo S. Costa ◽  
Hugo I. Sato ◽  
Raissa P. Rocha ◽  
Alex F. Carvalho ◽  
Nathalia S. Guimarães ◽  
...  
Keyword(s):  
Large Scale ◽  
Pool Size ◽  
Individual Sample ◽  
Chain Reaction ◽  
Test Sensitivity ◽  
Large Scale Testing ◽  
Public Emergency ◽  
Polymerase Chain ◽  
Belo Horizonte

Reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) to detect SARS-CoV-2 RNA is an essential test to monitor the occurrence of COVID-19. A methodology is proposed for the determination of maximum pool size and adjustments of cut-off values of cycle threshold (Ct in RT-qPCR pool testing, to compensate for the dilution caused by pooling. The trade-off between pool size and test sensitivity is stated explicitly. The procedure was designed to ensure that samples that would be detectable in individual testing remain detectable in pool testing. The proposed relaxation in cut-off is dependent on the pool size, allowing a relatively tight correction to avoid loss of detection of positive samples. The methodology was evaluated in a study of pool testing of adults attending a public emergency care unit, reference for COVID-19 in Belo Horizonte, Brazil, and presenting flu-like symptoms. Even samples on the edge of detectability in individual testing were detected correctly. The proposed procedure enhances the consistency of RT-qPCR pool testing by enforcing that the scales of detectability in pool processing and in individual sample processing are compatible. This may enhance the contribution of pool testing to large-scale testing for COVID-19.

scholarly journals Research on PDMA communication system based on Complete Complementary Sequence

2020 ◽  
Author(s):  
Shufeng Li ◽  
Baoxin Su ◽  
Libiao Jin
Keyword(s):  
Power Allocation ◽  
Spread Spectrum ◽  
Communication System ◽  
Multiple Access ◽  
Large Scale ◽  
Average Power ◽  
Spectrum Efficiency ◽  
System Model ◽  
Complementary Sequence ◽  
Allocation Algorithm

Abstract Pattern division multiple access (PDMA) is a new non-orthogonal multiple access (NOMA) technology. It is proposed to meet the challenge of 5G large-scale connectivity and high-frequency spectral efficiency. Compared with traditional orthogonal multiple access (OMA), PDMA can support more users through the allocation of non-orthogonal resources. Due to perfect aperiodic correlation, complete complementary sequence (CCS) greatly improves the spectrum efficiency of the system. It has been widely used in wireless communication and radar sensing, and it still has research value in 5G. In order to apply the advantages of CCS to NOMA communication system, this paper proposes a system model of CCS spread spectrum coding based on PDMA. CCS is used as spread spectrum code to improve the performance of PDMA communication system. At the same time, on the basis of spread spectrum technology, this paper analyzes the average power allocation algorithm and water-filling power allocation algorithm, and a dynamic power allocation algorithm based on the transmission rate and practical application is proposed. The simulation results show that the system model can effectively improve the performance of the system.

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