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Intelligent fitting global real-time task scheduling strategy for high-performance multi-core systems

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CAAI Transactions on Intelligence Technology 2022年第2期7卷 244-255页

作者： Junpeng Wu Enyuan Zhao Sizhao Li yanqiang wang College of Computer Science and Technology Harbin Engineering UniversityHarbinChina

With the development of high-performance computing,it is possible to solve large-scale computing ***,the irregularity and access characteristics of computing problems bring challenges to the realisation and performance *** the performance of a single core makes it challenging to maintain Moore's law,and multi-core processors emerge.A chip brings together multiple universal processor cores of equal status and has the same structure supported by an isomorphic multi-core *** high-performance computing,the granularity of computing tasks leads to the complexity of scheduling *** high system performance,load balancing and processor fault tolerance at a minimum cost is the key to task scheduling in the high-performance field,especially in specific multi-core hardware *** this study,global real-time task scheduling is implemented in a high-performance multi-core *** system adopts the hybrid scheduling among clusters and the intelligent fitting within clusters to implement the global real-time task scheduling *** the cluster scheduling policy,tasks are allowed to preempt the core with low priority,and the priority of tasks that access memory is dynamically improved,higher than that of all the tasks without memory *** intelligent fitting method is also *** the data read by the task is in the cache and the cache access ability value of the task is within a reasonable threshold,the priority of the task is promoted to the highest priority,pre-empting the core without the access memory *** results show that the intelligently fitting global scheduling strategy for multi-core systems has better performance in the nuclear utilisation rate and task schedulability.

关键词： genetic algorithms intelligent systems

Polarization of plane wave propagating inside elastic hexagonal system solids

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Science China(Physics,Mechanics & Astronomy) 2014年第2期57卷 251-262页

作者： FA Lin ZHAO MeiShan LIU YongChang wang Lei wang yanqiang SUN JiGang School of Electronics and Information Engineering Xi'an University of Posts and Telecommunications James Franck Institute and Department of Chemistry University of Chicago5735 South Ellis AvenueChicagoIL 60637USA

Based on the reported physical parameters for hexagonal system solids,we have calculated the effects of anisotropy on polarization of plane P-wave *** we report the results of calculations and the newly observed physical *** is found that,for a given propagation,if the polarization is parallel to the wave vector,so also to the Poynting *** such a case,the phase velocity is identical to the energy velocity;the quasi P-wave degenerates to a pure P-wave along the *** is also noted that if the polarization is parallel to the Poynting vector but not to the wave vector,the propagating wave cannot be a pure ***,the polarization in a quasi P-wave may deviate from the wave vector for more than 45°,but the deviation from the Poynting vector is always less than 45°.The energy velocity of a quasi SV-wave can be larger than that of the quasi P-wave in some propagation directions,even though the phase velocity of a quasi SV-wave may never be larger than either the phase velocity or energy velocity of the quasi ***,in case of parameters ε=0 and δ*≠0,the polarization of a quasi P-wave has an observed symmetry at a 45°phase *** anisotropy of a hexagonal system solid determines if a pure P-wave can be created and what the propagation direction is for a plane wave propagating inside such a hexagonal system solid.

关键词： anisotropy polarization pure P-wave VTI medium hexagonal crystal

N_2O Emission from Paddy Field under Different Rice Planting Modes

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Wuhan University Journal of Natural Sciences 2006年第4期11卷 989-996页

作者： wang Yuying ZHU Bo wang yanqiang GAO Meirong MA Xiumei Institute of Mountain Hazards and Environment ChineseAcademy of Sciences Chengdu 610041 Sichuan China Graduate University of Chinese Academy of Sciences Beijing 100049 China College of Resources and Environment Southwest Agricultural University Chongqing 400716 China

Measurements of N2O emissions from conventional rice cultivation （CRC）, CRC with straw mulching, system of rice intensification （SRI） and SRI with plastic film mulching were conducted through static chamber/gas-chromatography techniques. The results show that daily fluctuation of N2O emissions in jointing stage are much higher than in others. A type peak of N2O seasonal emission presented between jointing and bearing stages companying with high daily average temperature and low precipitation. Biomass and leaf stomatal conductance were observed. Total quantities of N2O emission were budgeted. The results showed that after jointing stage the average N2O emission flux of SRI with plastic film mulching increased significantly than CRC with straw mulching and SRI, the leaf stomatal conductance of those showed the same trend （p〈 0.05）. Yield and total quantity of N20 emission in CRC with straw mulching enhanced 13. 7% and 10.7% compared with those of CRC, respectively. The total quantity of N20 emissions reduced 3. 6% in SRI with plastic film mulching compared with CRC, however, the yield increase of that was not significant.

关键词： nitrous oxide emission rice olanting mode oaddv field

Soil Crevice Formation and Erosion in Yuanmou Dry-Hot Valley, Yunnan Province, China

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Wuhan University Journal of Natural Sciences 2009年第1期14卷 87-91页

作者： XU Xiangming HE Yurong SHEN Nan wang yanqiang Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China College of Resources and Environment Sichuan Agricultural University Ya'an 625014 Siehuan China

The basic characteristics, X-ray analysis and micromorphology of soil developed from the parent rubified soil is probed. Results show that there are similarities among different types of the rubified soils. The soil clay （D〈0.002 mm） contents （Co） are relatively higher between 29.16% and 80.03%. In addition, organic matter contents are lower between 2.2-6.6 g/kg. The clay minerals in the rubified soils have a high content of 2：l type swelling minerals, e.g., smectite and vermiculite, which are the basic causes of formation of soil cracks and crevices. Soil micromorphology characteristics show that microcosmic crevices universally distributed within the tight and compact soil microstructure are the microcosmic characteristics of crevices formation. The soil cracks and crevices change the erosion process. Obviously, well developed soil crevice carries a significant connection with strong soil erosion in Yuanmou, Yunnan province, China. The term ＂soil crevice erosion＂ was coincided with the viewpoint put forward that soil crevice erosion plays a dominant role in regional and violent soil erosion in this area.

关键词： soil crevice erosion soil characteristics soil micromorphology Yuanmou dry-hot valley

Effects of different long-term crop straw management practices on ammonia volatilization from subtropical calcareous agricultural soil

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Atmospheric and Oceanic Science Letters 2020年第3期13卷 232-239页

作者： ZHANG Bowen ZHOU Minghua LIN Hongyu NTACYABUKURA Tite wang yanqiang ZHU Bo Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengduChina College of Resources and Environment University of Chinese Academy of SciencesBeijingChina

Ammonia(NH3)volatilized from agricultural production and its secondary aerosols contribute greatly to air *** long-term crop straw management practices may significantly affect the soil fertility and soil nitrogen cycle,however,the effect on NH3 volatilization has not been well ***,a one-year field experiment was conducted to evaluate the effect of straw incorporation on NH3 volatilization from subtropical calcareous agricultural soil from a longterm perspective,including four treatments:synthetic fertilizer(CK);synthetic fertilizer incorporation with 100%or 50%of the previous season’s crop straw(SI1 and SI2,respectively);and synthetic fertilizer incorporation with 50%burned crop straw(SI2B).Soil NH3 volatilizations were monitored through a wheat–maize rotation year by using a dynamic chamber *** results demonstrated that NH3 volatilization primarily occurred within 38 days and 7–10 days following nitrogen fertilization events for the wheat and maize seasons,*** crop straw management practices mainly impacted the NH3 flux of the basal fertilization rather than the topdressing fertilization;long-term crop straw incorporation effectively lowered NH3 loss(35.1%for SI1 and 16.1%for SI2 compared to CK;and the inhibiting effect increased with increasing straw amount,possibly contributed by the high straw carbon/nitrogen ratio,and enhanced microbial activity,which contributed to inorganic nitrogen immobilization and lower ammonium content in the ***,SI2B significantly increased(29.9%)the annual NH3 flux compared with SI2,indicating that long-term 100%straw incorporation could be a promising straw management practice for mitigating NH3 loss and increasing soil fertility.

关键词： Ammonia volatilization crop straw incorporation straw burning calcareous soil

Micromorphological Features of Paleo-Stagnic-Anthrosols at Archaeological Site of Sanxingdui,China

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Journal of Mountain Science 2008年第4期5卷 358-366页

作者： HE Yurong HUANG Chengmin XU Xiangming wang yanqiang HE Xiubin Institute of Mountain Hazards ＆ Environment Chinese Academy of Sciences Chengdu 610041 China Department of Environmental Science and Engineering Sichuan University Chengdu 610065 China

The archaeological site of the Sanxingdui may date back as far as 5,000 years ago. The typical profiles of Palaeo-Stagnic-Anthrosols near the ancient site were selected, which aimed to identify diagnostic horizons employing methodology of soil taxonomic classification and to reveal the micromorphological properties of the paleosols. Under long-term anthropogenic mellowing, the discernible differentiation between anthrostagnic epipedon and its subhorizons as well as hydragric horizon and its subhorizons occurred in Paleo-Stagnie-Anthrosols at the archaeological site of the Sanxingdui. The mieromorphological properties diversified among each specific diagnostic subhorizon, e.g., the developed microstructure in cultivated subhorizon within anthrostagnic epipedon, closely arranged particles and considerable micropores beneficial to both of water conservation and filtration in plow subhorizon within anthrostagnic epipedon, and automorphic optical-orientation clays and calcareous corrosion in hydragric horizons. The findings above of micromorphological features related with diagnostic horizons are significant for soil taxonomic classification.

关键词： Paleo-Stagnic-Anthrosols diagnostichorizon soil micromorphology soil taxonomic classification archaeological site of Sanxingdui China

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电位滴定法测定调味品中氯化钠含量

食品工业科技 1993年第3期14卷 55-58页

作者： wang yanqiang Xie Baoyin

本文探讨了使用电位滴定法测定调味品中氯化钠含量,同传统方法(铬酸钾指示剂法)相比,电位滴定法具有准确、简便、快速的特点。

关键词：电位滴定法调味剂氯化钠测定

Genomic regions associated with the sex-linked inhibitor of dermal melanin in Silkie chicken

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Frontiers of Agricultural Science and Engineering 2014年第3期1卷 242-249页

作者： Ming TIAN Rui HAO Suyun FANG yanqiang wang Xiaorong GU Chungang FENG Xiaoxiang HU Ning LI State Key Laboratory for Agrobiotechnology China Agricultural UniversityBeijing 100193China

A unique characteristic of the Silkie chicken is its fibromelanosis *** dermal layer of its skin,its connective tissue and shank dermis are *** dermal hyperpigmentation phenotype is controlled by the sex-linked inhibitor of dermal melanin gene(ID)and the dominant fibromelanosis *** study attempted to confirm the genomic region associated with *** genotyping,ID was found to be closely linked to the region between GGA_rs16127903 and GGA_rs14685542(8406919 bp)on chromosome Z,which contains ten functional *** expression of these genes was characterized in the embryo and 4 days after hatching and it was concluded that MTAP,encoding methylthioadenosinephosphorylase,would be the most likely candidate ***,target DNA capture and sequence analysis was performed,but no specific SNP(s)was found in the targeted region of the Silkie *** work is necessary to identify the causal ID mutation located on chromosome Z.

关键词： sex-linked inhibitor of dermal melanin(Id) Silkie chromosome Z

Inverted duplication including Endothelin 3 closely related to dermal hyperpigmentation in Silkie chickens

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Frontiers of Agricultural Science and Engineering 2014年第2期1卷 121-129页

作者： Ming TIAN Suyun FANG yanqiang wang Xiaorong GU Chungang FENG Rui HAO Xiaoxiang HU Ning LI State Key Laboratory for Agrobiotechnology College of Biological SciencesChina Agricultural UniversityBeijing 100193China

The dermal hyperpigmentation phenotype in chickens is controlled by the dominant fibromelanosis *** of the ten unique characteristics of Silkie chickens is the fibromelanosis phenotype,which is pigmentation in the dermal layer of the skin and connective *** this study,we found a mutation of fibromelanosis,a genomic rearrangement that included an inverted duplication of endothelin3(EDN3),is *** show that,as a stimulator of melanoblast proliferation,EDN3 expression was increased in silkie embryos and in both skin and muscle throughout ***3 expression led to an increase in expression of the downstream genes EDNRB2 and TYRP2,and was closely relate with the hyperpigmentation *** examined eight different Chinese chicken breeds showing hyperpigmentation and conclude that this structural genetic variant exists in all fibromelanosis chicken breeds.

关键词： dermal hyperpigmentation duplication endothelin 3 Silkie chicken