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动态功能网络连接性分析框架

Zening Fu, Yuhui Du, Vince D. Calhoun

《工程（英文）》 2019年第5卷第2期页码 190-193 doi: 10.1016/j.eng.2018.10.001

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Cerebral regional and network characteristics in asthma patients: a resting-state fMRI study

Siyi Li, Peilin Lv, Min He, Wenjing Zhang, Jieke Liu, Yao Gong, Ting Wang, Qiyong Gong, Yulin Ji, Su Lui

《医学前沿（英文）》 2020年第14卷第6期页码 792-801 doi: 10.1007/s11684-020-0745-1

摘要： Asthma is a serious health problem that involves not only the respiratory system but also the central nervous system. Previous studies identified either regional or network alterations in patients with asthma, but inconsistent results were obtained. A key question remains unclear: are the regional and neural network deficits related or are they two independent characteristics in asthma? Answering this question is the aim of this study. By collecting resting-state functional magnetic resonance imaging from 39 patients with asthma and 40 matched health controls, brain functional measures including regional activity (amplitude of low-frequency fluctuations) and neural network function (degree centrality (DC) and functional connectivity) were calculated to systematically characterize the functional alterations. Patients exhibited regional abnormities in the left angular gyrus, right precuneus, and inferior temporal gyrus within the default mode network. Network abnormalities involved both the sensorimotor network and visual network with key regions including the superior frontal gyrus and occipital lobes. Altered DC in the lingual gyrus was correlated with the degree of airway obstruction. This study elucidated different patterns of regional and network changes, thereby suggesting that the two parameters reflect different brain characteristics of asthma. These findings provide evidence for further understanding the potential cerebral alterations in the pathophysiology of asthma.

关键词： asthma brain regional activation functional connectivity resting-state fMRI

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High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general connectivity

《化学科学与工程前沿（英文）》 2022年第16卷第12期页码 1743-1750 doi: 10.1007/s11705-022-2184-9

摘要： The standard enthalpy of formation is an important predictor of the reaction heat of a chemical reaction. In this work, a high-precision method was developed to calculate accurate standard enthalpies of formation for polycyclic aromatic hydrocarbons based on the general connectivity based hierarchy (CBH) with the discrete correction of atomization energy. Through a comparison with available experimental findings and other high-precision computational results, it was found that the present method can give a good description of enthalpy of formation for polycyclic aromatic hydrocarbons. Since CBH schemes can broaden the scope of application, this method can be used to investigate the energetic properties of larger polycyclic aromatic hydrocarbons to achieve a high-precision calculation at the CCSD(T)/CBS level. In addition, the energetic properties of CBH fragments can be accurately calculated and integrated into a database for future use, which will increase computational efficiency. We hope this work can give new insights into the energetic properties of larger systems.

关键词： standard enthalpy of formation polycyclic aromatic hydrocarbons connectivity based hierarchy high-precision calculation

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心理疲劳的神经机制——脑连接组的新见解 Review

齐鹏, 茹画, 高凌云, 张小兵, 周天舒, 田语, Nitish Thakor, Anastasios Bezerianos, 李劲松, 孙煜

《工程（英文）》 2019年第5卷第2期页码 276-286 doi: 10.1016/j.eng.2018.11.025

摘要：

在长时间的认知任务中保持注意力集中通常会引起高水平的心理疲劳。心理疲劳可以描述为一种主观疲惫的感觉，通常表现为对眼前任务参与感的降低，客观上体现为与任务相关的认知、行为执行能力和表现降低。为了有效地减少实际工作中由心理疲劳引起的不良后果，众多来自不同领域的研究者付出了持续不断的努力以进一步理解其潜在的神经机制。其中神经工程和人因工程领域的相关研究者提出了通过采用先进的脑影像技术手段，对心理疲劳产生过程中的神经活动变化进行定量分析，从而揭示其作用机理的研究思路。本文首先对有关心理疲劳的神经影像学研究成果进行了介绍，并结合脑连接图谱等新的影像学证据对这些研究中广泛使用的单变量分析方法的缺点进行了讨论。近10年来，越来越多的研究认为心理疲劳与大脑各区域之间功能连接的重组有关，而图论分析方法的提出也为定量分析功能连接重组提供了新的视角。针对这一新的研究趋势，本文较为全面地概述了心理疲劳的脑连接相关研究成果，归纳总结了多变量脑功能连接分析方法在心理疲劳神经机制研究中的意义。目前这一新兴研究领域的相关研究成果还相对较少，但脑连接组的应用不仅有助于阐明神经工效学这一新生领域中心理疲劳的潜在神经机制，而且在不久的将来有望实现心理疲劳的自动检测及分类，从而避免疲劳相关的不良后果。

关键词：精神疲劳功能连接图形理论分析脑网络

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“一带一路”电力互联互通浅析

刘哲,高艺,王玉生,李隽,黄维和

《中国工程科学》 2019年第21卷第4期页码 76-81 doi: 10.15302/J-SSCAE-2019.04.007

摘要：

“一带一路”建设不断向纵深发展，在基础设施、经贸投资和绿色金融等多领域取得丰硕成果。能源电力是“一带一路”国际合作的重要领域。为更好地认识开展沿线国家能源电力国际合作的重要性，本文从环境和成本两个方面阐述了沿线国家清洁能源开发的资源优势，诠释了各国间电力互联互通的潜力。通过思维创新、模式变革、技术革新以及利益共享四个维度，分析了技术革命对“一带一路”电力互联互通的支撑作用。研究表明沿线国家能源电力需求呈快速增长趋势，清洁能源资源分布广泛、优势明显，为电力互联互通提供了必要条件。在国际能源电力合作中，应充分发挥各国的比较优势，以新能源、电网、信息等关键技术的变革支撑“一带一路”电力互联互通。

关键词： “一带一路” 能源互联网清洁能源电力互联互通能源转型

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Multi-UAV cooperative target tracking with bounded noise for connectivity preservation

Rui Zhou, Yu Feng, Bin Di, Jiang Zhao, Yan Hu,jzhao@buaa.edu.cn

《信息与电子工程前沿（英文）》 2020年第21卷第10期页码 1413-1534 doi: 10.1631/FITEE.1900617

摘要： We investigate cooperative target tracking of multiple unmanned aerial vehicles (UAVs) with a limited communication range. This is an integration of UAV motion control, target state estimation, and network topology control. We first present the communication topology and basic notations for , and introduce the distributed . Then, convergence and boundedness of the estimation errors using the filter are analyzed, and potential functions are proposed for communication link maintenance and collision avoidance. By taking stable target tracking into account, a distributed potential function based UAV motion controller is discussed. Since only the estimation of the target state rather than the state itself is available for UAV motion control and UAV motion can also affect the accuracy of state estimation, it is clear that the UAV motion control and target state estimation are coupled. Finally, the stability and convergence properties of the coupled system under are analyzed in detail and demonstrated by simulations.

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Development and applications of functional gene microarrays in the analysis of the functional diversity

Zhili HE, Joy D. VAN NOSTRAND, Ye DENG, Jizhong ZHOU

《环境科学与工程前沿（英文）》 2011年第5卷第1期页码 1-20 doi: 10.1007/s11783-011-0301-y

摘要： Functional gene arrays (FGAs) are a special type of microarrays containing probes for key genes involved in microbial functional processes, such as biogeochemical cycling of carbon, nitrogen, sulfur, phosphorus, and metals, biodegradation of environmental contaminants, energy processing, and stress responses. GeoChips are considered as the most comprehensive FGAs. Experimentally established probe design criteria and a computational pipeline integrating sequence retrieval, probe design and verification, array construction, data analysis, and automatic update are used to develop the GeoChip technology. GeoChip has been systematically evaluated and demonstrated to be a powerful tool for rapid, specific, sensitive, and quantitative analysis of microbial communities in a high-throughput manner. Several generations of GeoChip have been developed and applied to investigate the functional diversity, composition, structure, function, and dynamics of a variety of microbial communities from different habitats, such as water, soil, marine, bioreactor, human microbiome, and extreme ecosystems. GeoChip is able to address fundamental questions related to global change, bioenergy, bioremediation, agricultural operation, land use, human health, environmental restoration, and ecological theories and to link the microbial community structure to environmental factors and ecosystem functioning.

关键词： functional gene arrays (FGAs) GeoChip microbial communities functional diversity/composition/structure environmental factor ecosystem functioning

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Fluorescent probes and functional materials for biomedical applications

《化学科学与工程前沿（英文）》 2022年第16卷第10期页码 1425-1437 doi: 10.1007/s11705-022-2163-1

摘要： Due to their simplicity in preparation, sensitivity and selectivity, fluorescent probes have become the analytical tool of choice in a wide range of research and industrial fields, facilitating the rapid detection of chemical substances of interest as well as the study of important physiological and pathological processes at the cellular level. In addition, many long-wavelength fluorescent probes developed have also proven applicable for in vivo biomedical applications including fluorescence-guided disease diagnosis and theranostics (e.g., fluorogenic prodrugs). Impressive progresses have been made in the development of sensing agents and materials for the detection of ions, organic small molecules, and biomacromolecules including enzymes, DNAs/RNAs, lipids, and carbohydrates that play crucial roles in biological and disease-relevant events. Here, we highlight examples of fluorescent probes and functional materials for biological applications selected from the special issues “Fluorescent Probes” and “Molecular Sensors and Logic Gates” recently published in this journal, offering insights into the future development of powerful fluorescence-based chemical tools for basic biological studies and clinical translation.

关键词： fluorescent probes imaging cell biomedicine biomolecules

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基于连通可靠度约束的分簇算法研究

于继明,孙亚民,雷艳静,杨余旺

《中国工程科学》 2010年第12卷第9期页码 73-77

摘要：

在研究了一些分簇算法基础上，提出基于连通可靠度约束的、适合大规模随机部署的快速成簇算法。仿真表明基于连通可靠度约束的快速成簇算法得到的分簇覆盖面广、簇头分布合理、稳定性强，与最小ID分簇及优化的最大连接数分簇算法相比，得到簇头数量少，分簇更合理，各成员节点与簇头的连通可靠度好，能保证网络的稳定性与健壮性，大大减少重构开销带来的通信代价，有利于均衡网络能量消耗，延长网络生命周期。

关键词：无线自组传感器网连通可靠度分簇算法

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先进天线赋能无线互联

陆贵文, 段宝岩

《工程（英文）》 2022年第11卷第4期页码 1-2 doi: 10.1016/j.eng.2022.03.003

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无人机网络中的安全连通性分析 None

Xin YUAN, Zhi-yong FENG, Wen-jun XU, Zhi-qing WEI, Ren-ping LIU

《信息与电子工程前沿（英文）》 2018年第19卷第3期页码 409-422 doi: 10.1631/FITEE.1700032

摘要：无人机网络的独特特征包括高动态网络拓扑、高移动性以及野外无线环境可能使得无人机网络容易受到攻击和威胁。本文基于无人机行为、运动模式和无人机之间的信道特征，为无人机网络提出一种新颖的信任模型。该信任模型由直接信任、间接信任、信任集成和信任更新4部分组成。基于信任模型，提出一种无人机网络中安全链路的概念，该概念仅在两个无人机之间既有物理链路又有信任链路时存在。此外，利用两架无人机之间的物理连通概率和安全连通概率，分析无人机网络的连通性。通过随机几何方法，推导得到考虑和不考虑多普勒频偏情况下的物理连通概率和安全连通概率的解析表达式。仿真结果表明，与具有和不具有恶意攻击的物理连接概率相比，提出的信任模型可以保证无人机之间的安全通信和可靠连接，并在无人机网络面临恶意攻击和其他安全隐患时提高网络性能。

关键词：无人机网络；信任模型；安全连接；多普勒频移

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Temporal dimension and water quality control in an emission trading scheme based on water environmental functional

Zhaoxing HAN, Zhenyao SHEN, Yongwei GONG, Qian HONG

《环境科学与工程前沿（英文）》 2011年第5卷第1期页码 119-129 doi: 10.1007/s11783-011-0272-z

摘要： Emission trading is one of the most effective alternatives to controlling water pollution. Water environmental functional zone (WEFZ) is used to determine the water quality standard and identify the zone boundary for each river or reach. In this study, a new emission trading scheme was addressed based on WEFZ, accounting for both the temporal dimension and water quality control. A temporal factor of emission trading was proposed based on variations in the environmental capacity within a year by dividing the year into three periods, including high, normal, and low periods of environmental capacity. During each period, emission trading was implemented exclusively. A water quality-control scheme was suggested based on the water quality requirement in the water functional zone, in which the water quality at the downstream boundary of the zone was required to meet the water standard following auto-purification in the stream. Two methods of calculating water quality control are addressed for point-source pollution and non-point-source pollution. The calculated temporal dimension and water quality control were located in Dongxi River of the Daning Watershed in the Three Gorges Watershed. The high period was during June, July, and August, the normal period was during April, May, September, and October, and the low period was during January, February, March, November, and December. The results from the water quality calculation demonstrated that the discharge of point-source and non-point-source pollutions led to an excess of common contaminants at the downstream boundary of WEFZ. The temporal and spatial factors above should be incorporated into the emission trading scheme based on WEFZ.

关键词： emission trading water functional zone water quality control

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A Study of the Functional Mechanism of Petrochemical Engineering Construction Project Management

Ji-ming Wang

《工程管理前沿（英文）》 2014年第1卷第2期页码 129-139 doi: 10.15302/J-FEM-2014020

摘要： This paper, proceeding from the project construction process, the management mode and the implementation way, makes an in-depth study of the environmental characteristics and the managerial elements of petrochemical engineering construction project, revealing the inherent laws, establishing a theoretical model, and proposing a theory of the mechanisms of construction project management; and presents profound revelations found for construction project management in petrochemical engineering in seven aspects, which can play a guiding role in improving the managerial performance of petrochemical construction project. The theory established proposes that: The construction project management in petrochemical engineering is a complex systematic process, formed of 5 phases and 55 sub-processes of management, and exposed to many factors of influence; the environmental characteristics and managerial elements exercise positive impacts on managerial performance, but different factors have different impacts and act in different ways on managerial performance; the managerial elements of petrochemical engineering construction project are tiered, transferable, systematic and quantifiable, and the role of managerial elements in the managerial performance can be systematically integrated, quantitatively explained and transferred in a multi-level way.

关键词： petrochemical engineering construction project project management functional mechanism

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Effects of functional groups for CO

Chenkai Gu, Yang Liu, Weizhou Wang, Jing Liu, Jianbo Hu

《化学科学与工程前沿（英文）》 2021年第15卷第2期页码 437-449 doi: 10.1007/s11705-020-1961-6

摘要： Metal organic frameworks (MOFs) are promising adsorbents for CO capture. Functional groups on organic linkers of MOFs play important roles in improving the CO capture ability by enhancing the CO sorption affinity. In this work, the functionalization effects on CO adsorption were systematically investigated by rationally incorporating various functional groups including –SO H, –COOH, –NH , –OH, –CN, –CH and –F into a MOF-177 template using computational methods. Asymmetries of electron density on the functionalized linkers were intensified, introducing significant enhancements of the CO adsorption ability of the modified MOF-177. In addition, three kinds of molecular interactions between CO and functional groups were analyzed and summarized in this work. Especially, our results reveal that –SO H is the best-performing functional group for CO capture in MOFs, better than the widely used –NH or –F groups. The current study provides a novel route for future MOF modification toward CO capture.

关键词： metal-organic frameworks functional groups CO₂ capture GCMC DFT

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Microbial community and functional genes in the rhizosphere of alfalfa in crude oil-contaminated soil

Yi ZHONG, Jian WANG, Yizhi SONG, Yuting LIANG, Guanghe LI

《环境科学与工程前沿（英文）》 2012年第6卷第6期页码 797-805 doi: 10.1007/s11783-012-0405-z

摘要： A rhizobox system constructed with crude oil-contaminated soil was vegetated with alfalfa ( L.) to evaluate the rhizosphere effects on the soil microbial population and functional structure, and to explore the potential mechanisms by which plants enhance the removal of crude oil in soil. During the 80-day experiment, 31.6% of oil was removed from the adjacent rhizosphere (AR); this value was 27% and 53% higher than the percentage of oil removed from the far rhizosphere (FR) and from the non-rhizosphere (NR), respectively. The populations of heterotrophic bacteria and hydrocarbon-degrading bacteria were higher in the AR and FR than in the NR. However, the removal rate of crude oil was positively correlated with the proportion of hydrocarbon-degrading bacteria in the rhizosphere. In total, 796, 731, and 379 functional genes were detected by microarray in the AR, FR, and NR, respectively. Higher proportions of functional genes related to carbon degradation and organic remediation, were found in rhizosphere soil compared with NR soil, suggesting that the rhizosphere selectively increased the abundance of these specific functional genes. The increase in water-holding capacity and decrease in pH as well as salinity of the soil all followed the order of AR>FR>NR. Canonical component analysis showed that salinity was the most important environmental factor influencing the microbial functional structure in the rhizosphere and that salinity was negatively correlated with the abundance of carbon and organic degradation genes.

关键词： crude oil-contaminated soil phytoremediation rhizosphere effects rhizobox functional genes