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Body size induced changes in metabolic carbon of soil nematodes under N deposition and precipitation regime change in a temperate grassland

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Ecological Processes 2024年第1期13卷 120-131页

作者： Shuyan Cui Xiaomei mo Guo Zheng College of Life Science Shenyang Normal University

Background Global climate change has resulted in precipitation regimes exhibiting an increasing trend in rainfall intensity but a reduction in its frequency. Nitrogen(N) deposition is a crucial component of the global N cycling. Nematode body size is a trait that responds to climate change and is used as a standard trait-based indicator in soil community analysis. Variations in body size influence metabolic carbon(C). We examined the ways by which body size and metabolic C of nematodes respond to changing precipitation regimes and how N deposition regulates these responses by an 8-year manipulative *** Nematode body size was indicated by the community-weighted mean(CWM) mass. We quantified C metabolism components of soil nematodes including production C, respiration C, and corresponding C use efficiency(CUE) under different precipitation intensities and N addition in a semi-arid steppe on the mongolian Plateau. The Mantel test was used to determine the correlations between CWM, CUE and environmental factors. The partial least squares path modeling(PLS-PM) was conducted to quantify direct or indirect contributions among latent *** We found that heavy precipitation intensity increased the CWM mass of total nematodes and omnivorespredators without N addition. N addition decreased CWM mass of bacterivores across all the precipitation intensity treatments. Stronger precipitation intensities might be favorable for nematode production and respiration C. Variations in the nematode CWM mass drove the CUE to change with N *** Our findings provide new insights into the mechanisms underlying nematode body size and C metabolism, and highlight that explorative studies, such as manipulative experiments, are needed to identify traits underlying size-related effects and to investigate how they affect CUE of nematodes. These efforts may increase our understanding of how changes in precipitation regimes and N deposition may alter soil nema

关键词： Community-weighted mean Metabolic footprint Nitrogen addition Precipitation intensity

1991—2006年中国大陆科研机构在所选代表性期刊发表论文统计

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中国基础科学 2008年第3期10卷 51-54页

作者：墨宏山科技部基础研究管理中心

研究论文是基础研究成果的主要表现形式之一,一个国家或科研机构发表特别是在高水平学术期刊上发表论文的情况可从一个角度反应该国家或科研机构的基础研究状况和水平.

关键词：科研机构学术期刊论文统计中国大陆基础研究研究成果研究论文统计分析

2007年中国大陆科研机构在PNAS发表论文统计

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中国基础科学 2008年第3期10卷 55-56页

作者：墨宏山科技部基础研究管理中心

PNAS(Proceedings of the National Academy of Sciences of the United States of America,)是一份国际高水平的综合性科技期刊,在PNAS上发表论文情况从一个侧面反映了一个国家科技特别是基础研究的水平.

关键词：论文统计科研机构中国大陆科技期刊基础研究统计分析研究论文台湾地区

Distributed Heterogeneous Multi-Agent Optimization with Stochastic Sub-Gradient

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Journal of Systems Science & Complexity 2024年第4期37卷 1470-1487页

作者： HU Haokun mo Lipo CAO Xianbing School of Mathematics and Statistics Central South UniversityChangsha 410083China School of Mathematics and Statistics Beijing Technology and Business UniversityBeijing 100048China Research Centre for Agri-Product Quality Traceability Beijing Technology and Business UniversityBeijing 100048China School of Computer and Artificial Intelligence Beijing Technology and Business UniversityBeijing 100048China China Food Flavor and Nutrition Health Innovation Center Beijing Technology and Business UniversityBeijing 100048China

This paper studies the optimization problem of heterogeneous networks under a timevarying *** agent only accesses to one local objective function,which is *** improved algorithm with noisy measurement of local objective functions' sub-gradients and additive noises among information exchanging between each pair of agents is designed to minimize the sum of objective functions of all *** weaken the effect of these noises,two step sizes are introduced in the control *** graph theory,stochastic analysis and martingale convergence theory,it is proved that if the sub-gradients are uniformly bounded,the sequence of digraphs is balanced and the union graph of all digraphs is joint strongly connected,then the designed control protocol can force all agents to find the global optimal point almost *** last,the authors give some numerical examples to verify the effectiveness of the stochastic sub-gradient algorithms.

关键词： Communication noises distributed stochastic optimization heterogeneous networks subgradient measurement noises

2007年中国大陆科研机构在PRL发表论文统计

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中国基础科学 2008年第4期10卷 52-53页

作者：墨宏山科技部基础研究管理中心

PRL(Physical Review Letters,)是美国物理学会主办的一份国际高水平的物理学科综合性期刊,在PRL上发表论文情况从一个侧面反映了一个国家在物理学科的研究水平.

关键词：论文统计科研机构中国大陆 PRL 物理学科学术期刊物理学会统计分析

Self-aligned dual-beam superresolution laser direct writing with a polarization-engineered depletion beam

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Photonics Research 2024年第6期12卷 1194-1200页

作者： GUOLIANG CHEN DEWEI mo JIAN CHEN QIWEN ZHAN School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shanghai Key Laboratory of modern Optical System University of Shanghai for Science and TechnologyShanghai 200093China Zhangjiang Laboratory Shanghai 201204China

A fiber-based,self-aligned dual-beam laser direct writing system with a polarization-engineered depletion beam is designed,constructed,and *** system employs a vortex fiber to generate a donut-shaped,cylindrically polarized depletion beam while simultaneously allowing the fundamental mode excitation beam to pass *** results in a co-axially self-aligned dual-beam source,enhancing stability and mitigating assembly *** size of the central dark spot of the focused cylindrical vector depletion beam can be easily adjusted using a simple polarization rotation *** a depletion wavelength of 532 nm and an excitation wavelength of800 nm,the dual-beam laser direct writing system has demonstrated a single linewidth of 63 nm and a minimum line spacing of 173 *** optimization of this system may pave the way for practical superresolution photolithography that surpasses the diffraction limit.

关键词： polarization beam depletion

2007年中国大陆科研机构在ACIE和JACS发表论文统计

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中国基础科学 2008年第6期10卷 39-41页

作者：墨宏山科技部基础研究管理中心

ACIE (Angewandte Chemie International Edition,)和JACS(Journal of the American Chemical Society,)是化学学科两份重要的具有代表性的高水平学术期刊,分别由德国化学学会和美国化学学会主办.

关键词：科研机构论文统计中国大陆美国化学学会 Edition Chemie 应用化学化学学科

2008年中国大陆科研机构在Science和Nature及其系列子刊发表论文统计

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中国基础科学 2009年第3期11卷 48-50页

作者：江海燕科学技术部基础研究管理中心北京100862

Science和Nature代表了国际最高水平的综合性学术期刊,本文对2008年中国大陆科研机构在这两个学术期刊及其Nature的系列子刊发表论文情况进行了统计分析。结果表明,中国大陆科研机构在上述期刊发表论文的能力稳步上升,但自主发表论文能... 详细信息

Science和Nature代表了国际最高水平的综合性学术期刊,本文对2008年中国大陆科研机构在这两个学术期刊及其Nature的系列子刊发表论文情况进行了统计分析。结果表明,中国大陆科研机构在上述期刊发表论文的能力稳步上升,但自主发表论文能力并没有得到明显的提高。

关键词： Science Nature及其子刊中国大陆科研机构研究论文统计

Distributed Region Tracking and Perimeter Surveillance for Second-Order Multi-Agent Systems in Star-Shaped Sets

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Journal of Systems Science & Complexity 2024年第5期37卷 1995-2020页

作者： SHANG Juan mo Lipo MI Rongxin CAO Xianbing School of Mathematics and Statistics Beijing Technology and Business University The Department of Foundation Shijiazhuang Institute of Railway Technology School of Computer and Artificial Intelligence Beijing Technology and Business University Research Centre for Agri-Product Quality Traceability Beijing Technology and Business University Coordination Center of China National Computer Network Emergency Response Technical Team

This paper investigates region tracking and perimeter surveillance of second-order multi-agent systems, where all agents move within a star-shaped set. First, by coordination transformations,the region tracking problem is converted from the star-shaped sets to a circular region. The authors employ communication and collaboration to complete region tracking and perimeter surveillance tasks,and then revert back to the star-shaped set by using inverse transformations. Second, the authors propose a distributed control strategy based on attractive and interaction potential functions, under which all agents can quickly track a given circular region and move around the perimeter. Finally,the authors validate the effectiveness and performance advantages of the proposed method through simulation experiments.

关键词： Distributed control multi-agent systems star-shaped sets target tracking