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Optimization of thread partitioning parameters in speculative multithreading based on artificial immune

Yu-xiang LI,Yin-liang ZHAO,Bin LIU,Shuo JI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 205-216 doi: 10.1631/FITEE.1400172

Abstract: Thread partition plays an important role in speculative multithreading (SpMT) for automatic parallelization of irregular programs. Using unified values of partition parameters to partition different applications leads to the fact that every application cannot own its optimal partition scheme. In this paper, five parameters affecting thread partition are extracted from heuristic rules. They are the dependence threshold (DT), lower limit of thread size (TSL), upper limit of thread size (TSU), lower limit of spawning distance (SDL), and upper limit of spawning distance (SDU). Their ranges are determined in accordance with heuristic rules, and their step-sizes are set empirically. Under the condition of setting speedup as an objective function, all combinations of five threshold values form the solution space, and our aim is to search for the best combination to obtain the best thread granularity, thread dependence, and spawning distance, so that every application has its best partition scheme. The issue can be attributed to a single objective optimization problem. We use the artificial immune algorithm (AIA) to search for the optimal solution. On Prophet, which is a generic SpMT processor to evaluate the performance of multithreaded programs, Olden benchmarks are used to implement the process. Experiments show that we can obtain the optimal parameter values for every benchmark, and Olden benchmarks partitioned with the optimized parameter values deliver a performance improvement of 3.00% on a 4-core platform compared with a machine learning based approach, and 8.92% compared with a heuristics-based approach.

Keywords： Speculative multithreading     Thread partitioning     Artificial immune algorithm    

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Partitioning of heavy metals during municipal solid waste incineration on a laboratory fluid bed furnace

LI Jianxin, YAN Jianhua, CHI Yong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 359-364 doi: 10.1007/s11708-007-0054-2

Abstract: The effects of temperature, chlorine and water on the partitioning of heavy metals are studied using

Keywords： partitioning     municipal     volatility     significant influence     temperature    

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Particulate matter and metals partitioning in highway rainfall-runoff

Gaoxiang YING, John J. SANSALONE,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 35-46 doi: 10.1007/s11783-010-0009-4

Abstract: Partitioning in retained runoff resulted in a particulate-bound €predominance €for €most

Keywords： stormwater     particulate matter (PM)     turbidity     suspended sediment concentration (SSC)     unit operations     metals     dry deposition     acid rain    

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Comparison of evapotranspiration and energy partitioning related to main biotic and abiotic controllers

Lei GAO, Peng ZHAO, Shaozhong KANG, Sien LI, Ling TONG, Risheng DING, Hongna LU

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4,   Pages 490-504 doi: 10.15302/J-FASE-2019310

Abstract:

Knowledge of evapotranspiration (ET) and energy partitioning is useful for optimizing water managementdrip-irrigated vineyard (2017) in an arid region of north-west China to compare vineyard ET and energy partitioningThe seasonal average partitioning of net radiation (Rn) into the latent heat flux (LE), sensible heatResponses of ET and energy partitioning to the LAI and SWC differed under the two irrigation methods.From the perspective of energy partitioning, seasonal average H/Rn increased whereas LE/Rn, especially

Keywords： crop coefficient     eddy covariance     microlysimeter     sap flow     soil evaporation     transpiration    

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Two-phase Partitioning Bioreactor, Application of Cloud Point System in Bioconversion

Wang Zhilong

Strategic Study of CAE 2005, Volume 7, Issue 5,   Pages 73-78

Abstract:

The two-phase partitioning bioreactor is usually applied in many bioprocesses for enhancing the productivityThis article examines recent research on methods of the two-phase partitioning bioreactor.The practical potential of cloud point system as a novel two-phase partitioning bioreactor is illustrated

Keywords： two-phase partitioning     bioconversion     nonionic surfactant     cloud point system     bioreactor    

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Influence of drought and rewatering on the pattern of photosynthate partitioning of winter wheat

Gu Yanfang,Ding Shengyan,Gao Zhiying and Xing Qian

Strategic Study of CAE 2012, Volume 14, Issue 3,   Pages 59-64

Abstract: mdash;2006, two experiments were carried out to study the effect of drought stress on photosynthate partitioning

Keywords： potosynthate     partitioning coefficients     water-solution carbohydrates     winter wheat     drought stress and    

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Reducing CO emissions from the rebalancing operation of the bike-sharing system in Beijing

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 262-284 doi: 10.1007/s42524-021-0168-y

Abstract: Afterward, we develop a rebalancing optimization model based on a partitioning strategy to avoid deciding

Keywords： bike-sharing     CO2 emissions     environmental benefit     partitioning strategy     rebalancing problem    

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Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential evolution algorithm

Frontiers in Energy   Pages 782-795 doi: 10.1007/s11708-023-0905-8

Abstract: China is vigorously promoting the “whole county promotion” of distributed photovoltaics (DPVs). However, the high penetration rate of DPVs has brought problems such as voltage violation and power quality degradation to the distribution network, seriously affecting the safety and reliability of the power system. The traditional centralized control method of the distribution network has the problem of low efficiency, which is not practical enough in engineering practice. To address the problems, this paper proposes a cluster voltage control method for distributed photovoltaic grid-connected distribution network. First, it partitions the distribution network into clusters, and different clusters exchange terminal voltage information through a “virtual slack bus.” Then, in each cluster, based on the control strategy of “reactive power compensation first, active power curtailment later,” it employs an improved differential evolution (IDE) algorithm based on Cauchy disturbance to control the voltage. Simulation results in two different distribution systems show that the proposed method not only greatly improves the operational efficiency of the algorithm but also effectively controls the voltage of the distribution network, and maximizes the consumption capacity of DPVs based on qualified voltage.

Keywords： distributed photovoltaics (DPVs)     cluster partitioning     improved differential evolution algorithm     voltage    

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High capacity reversible data hiding in encrypted images based on adaptive quadtree partitioning and Research Article

Kaili QI, Minqing ZHANG, Fuqiang DI, Yongjun KONG,1804480181@qq.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 8,   Pages 1156-1168 doi: 10.1631/FITEE.2200501

Abstract: To the best of our knowledge, quadtree partitioning is first applied to RDH-EI.

Keywords： Adaptive quadtree partitioning     Adaptive most significant bit (MSB) prediction     Reversible data hiding    

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Development and application of manufacturing technology for high-performance and cost-saving stainless steels

Xie Shengtao,Liu Zhenyu and Wang Guodong

Strategic Study of CAE 2014, Volume 16, Issue 1,   Pages 81-87

Abstract:

Quenching and partitioning（Q&P）treatment was applied to cold rolling sheets of 409L and 410S ferriticThe austenitizing temperature，quenching temperature and partitioning time were optimized to obtain the

Keywords： stainless steel     quenching     partitioning     high strength     well formability    

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Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 1,   Pages 55-64 doi: 10.15302/J-FASE-2016091

Abstract: To quantify the effect of water and nitrogen management on yield components, biomass partitioning andReducing irrigation quantity significantly increased stem partitioning index ( ) and leaf partitioningindex ( ), and decreased ear partitioning index ( ) at harvest, but lowering N rate (from 500 to 100

Keywords： yield components     biomass partitioning     harvest index     irrigation     nitrogen     maize for seed production    

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Determination of polyfluoroalkyl compounds in water and suspended particulate matter in the river Elbe and North Sea, Germany

Lutz AHRENS, Merle PLASSMANN, Zhiyong XIE, Ralf EBINGHAUS

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 152-170 doi: 10.1007/s11783-009-0021-8

Abstract: The distribution of polyfluoroalkyl compounds (PFCs) in the dissolved and particulate phase and their discharge from the river Elbe into the North Sea were studied. The PFCs quantified included C -C perfluorinated sulfonates (PFSAs), 6∶2 fluorotelomer sulfonate (6∶2 FTS), C and C perfluorinated sulfinates (PFSiAs), C -C perfluorinated carboxylic acids (PFCAs), perfluoro-3,7-dimethyl-octanoic acid (3,7m -PFOA), perfluorooctane sulfonamide (FOSA), and n-ethyl perfluroctane sulfonamidoethanol (EtFOSE). PFCs were mostly distributed in the dissolved phase, where perfluorooctanoic acid (PFOA) dominated with 2.9-12.5 ng/L. In the suspended particulate matter FOSA and perfluorooctane sulfonate (PFOS) showed the highest concentrations (4.0 ng/L and 2.3 ng/L, respectively). The total flux of ∑PFCs from the river Elbe was estimated to be 802 kg/year for the dissolved phase and 152 kg/year for the particulate phase. This indicates that the river Elbe acts as a source of PFCs into the North Sea. However, the concentrations of perfluorobutane sulfonate (PFBS) and perfluorobutanoic acid (PFBA) in the North Sea were higher than that in the river Elbe, thus an alternative source must exist for these compounds.

Keywords： PFCs)     perfluorooctane sulfonate (PFOS)     perfluorooctanoic acid (PFOA)     surface water     water-particulate partitioning    

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Kd-tree and quad-tree decompositions for declustering of 2D range queries over uncertain space

Ahmet SAYAR,Süleyman EKEN,Okan ÖZTÜRK

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 2,   Pages 98-108 doi: 10.1631/FITEE.1400165

Abstract: We present a study to show the possibility of using two well-known space partitioning and indexing techniques

Keywords： Kd tree     Quad tree     Space partitioning     Spatial indexing     Range queries     Query optimization    

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Adaptive compression method for underwater images based on perceived quality estimation Regular Papers

Ya-qiong CAI, Hai-xia ZOU, Fei YUAN

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 716-730 doi: 10.1631/FITEE.1700737

Abstract:

Underwater image compression is an important and essential part of an underwater image transmission system. An assessment and prediction method of effectively compressed image quality can assist the system in adjusting its compression ratio during the image compression process, thereby improving the efficiency of the image transmission system. This study first estimates the perceived quality of underwater image compression based on embedded coding compression and compressive sensing, then builds a model based on the mapping between image activity measurement (IAM) and bits per pixel and structural similarity (BPP-SSIM) curves, next obtains model parameters by linear fitting, and finally predicts the perceived quality of the image compression method based on IAM, compression ratio, and compression strategy. Experimental results show that the model can effectively fit the quality curve of underwater image compression. According to the rules of parameters in this model, the perceived quality of underwater compressed images can be estimated within a small error range. The presented method can effectively estimate the perceived quality of underwater compressed images, balance the relationship between the compression ratio and compression quality, reduce the pressure on the data cache, and thus improve the efficiency of the underwater image communication system.

Keywords： Underwater image compression     Set partitioning in hierarchical trees     Compressive sensing     Compression quality    

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Title Author Date Type Operation

Optimization of thread partitioning parameters in speculative multithreading based on artificial immune

Yu-xiang LI,Yin-liang ZHAO,Bin LIU,Shuo JI

Journal Article

Partitioning of heavy metals during municipal solid waste incineration on a laboratory fluid bed furnace

LI Jianxin, YAN Jianhua, CHI Yong

Journal Article

Particulate matter and metals partitioning in highway rainfall-runoff

Gaoxiang YING, John J. SANSALONE,

Journal Article

Comparison of evapotranspiration and energy partitioning related to main biotic and abiotic controllers

Lei GAO, Peng ZHAO, Shaozhong KANG, Sien LI, Ling TONG, Risheng DING, Hongna LU

Journal Article

Two-phase Partitioning Bioreactor, Application of Cloud Point System in Bioconversion

Wang Zhilong

Journal Article

Influence of drought and rewatering on the pattern of photosynthate partitioning of winter wheat

Gu Yanfang,Ding Shengyan,Gao Zhiying and Xing Qian

Journal Article

Reducing CO emissions from the rebalancing operation of the bike-sharing system in Beijing

Journal Article

Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential evolution algorithm

Journal Article

High capacity reversible data hiding in encrypted images based on adaptive quadtree partitioning and

Kaili QI, Minqing ZHANG, Fuqiang DI, Yongjun KONG,1804480181@qq.com

Journal Article

Development and application of manufacturing technology for high-performance and cost-saving stainless steels

Xie Shengtao,Liu Zhenyu and Wang Guodong

Journal Article

Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU

Journal Article

Determination of polyfluoroalkyl compounds in water and suspended particulate matter in the river Elbe and North Sea, Germany

Lutz AHRENS, Merle PLASSMANN, Zhiyong XIE, Ralf EBINGHAUS

Journal Article

Kd-tree and quad-tree decompositions for declustering of 2D range queries over uncertain space

Ahmet SAYAR,Süleyman EKEN,Okan ÖZTÜRK

Journal Article

Adaptive compression method for underwater images based on perceived quality estimation

Ya-qiong CAI, Hai-xia ZOU, Fei YUAN

Journal Article