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Photosynthate supply drives soil respiration of Fraxinus mandshurica seedlings in northeastern China： evidences from a shading and nitrogen addition experiment

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Journal of Forestry Research 2016年第6期27卷 1271-1276页

作者： Yanli Jing Dexin Guan Jiabing Wu anzhi wang Changjie Jin Fenghui Yuan Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Chinese Academy of SciencesShenyang 110164 People's Republic of China University of Chinese Academy of Sciences Beijing 100049People's Republic of China

Improved understanding of the link between photosynthesis and below-ground processes is needed to better understand ecosystem carbon （C） cycling and its feedback to climate change. We conducted a short-term shading and nitrogen （N） addition experiment from June to September 2013 to investigate the effect of photosynthate supply by Manchurian Ash （Fraxinus mandshurica） seed- lings on soil respiration （SR）. Shading significantly reduced SR in early and middle growing season, but not in late growing season, leading to a decrease in mean SR by 24 % in N-unfertilized treatments. N addition increased mean SR by 42 % in un-shaded treatment. The stimulation of SR was largely attributed to accelerated autotrophic respiration by increasing photosynthesis, leaf area index and belowground biomass. Shading reduced mean SR by 32 % in N addition treatment. The strengthened shading effect on SR resulted from N addition was because of more photosynthates supply at low soil temperature. Our findings highlight the predominance of photosynthates supply in regulating the responses of C cycling to global change.

关键词： Autotrophic respiration Carbon Fertilization Shading Substrate supply

A Study on Service-Oriented Smart Medical Systems Combined with Key Algorithms in the IoT Environment

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China Communications 2019年第9期16卷 235-249页

作者： Shan Lu anzhi wang Shenqi Jing Tao Shan Xin Zhang Yongan Guo Yun Liu Department of Geriatrics the First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Health Education the First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China

A smart medical service system architecture is proposed in this paper to increase medical resource utilization and improve the efficiency of the medical diagnosis process for complex business scenarios in the Medical Internet of Things(MIoT)*** resource representation model theory,multi-terminal aggregation algorithm,and the resource discovery algorithm based on latent factor model are also studied.A smart medical service system within the IoT environment is then developed,based on the open source *** results using real-world datasets illustrate that the proposed smart medical service system architecture can promote the intelligent and efficient management of medical resources to an extent,and assists in the develop towards digitization,intelligence,and precision in the field of medicine.

关键词： Internet of Things resource representationmodel resource discovery algorithm smart medical service system

Satellite remote sensing reveals overwhelming recovery of forest from disturbances in Asia

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 46-51页

作者： Yiying Zhu Hesong wang anzhi Zhang School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina Key Laboratory of Regional Climate and Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Forestry and Landscape Architecture Xinjiang Agricultural UniversityUrumqiChina

Forest ecosystems play key roles in mitigating human-induced climate change through enhanced carbon uptake;however,frequently occurring climate extremes and human activities have considerably threatened the stability of *** the same time,detailed accounts of disturbances and forest responses are not yet well quantified in *** study employed the Breaks For Additive Seasonal and Trend method-an abrupt-change detection method-to analyze the Enhanced Vegetation Index time series in East Asia,South Asia,and Southeast *** approach allowed us to detect forest disturbance and quantify the resilience after *** showed that 20%of forests experienced disturbance with an increasing trend from 2000 to 2022,and Southeast Asian countries were more severely affected by ***,95%of forests had robust resilience and could recover from disturbance within a few *** resilience of forests suffering from greater magnitude of disturbance tended to be stronger than forests with lower disturbance *** summary,this study investigated the resilience of forests across the low and middle latitudes of Asia over the past two *** authors found that most forests exhibited good resilience after disturbance and about two-thirds had recovered to a better state in *** findings of this study underscore the complex relationship between disturbance and resilience,contributing to comprehension of forest resilience through satellite remote sensing.

关键词： Forest ecosystem Enhanced vegetation index Breaks for additive seasonal and trend method Disturbance Resilience

Identification of Suitable Hydrologic Response Unit Thresholds for Soil and Water Assessment Tool Streamflow Modelling

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Chinese Geographical Science 2021年第4期31卷 696-710页

作者： JIANG Liupeng ZHU Jinghai CHEN Wei HU Yuanman YAO Jing YU Shuai JIA Guangliang HE Xingyuan wang anzhi Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Forest Ecology and Management^Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China Shenyang Arboretum Chinese Academy of SciencesShenyang 110016China

Use of a non-zero hydrologic response unit(HRU) threshold is an effective way of reducing unmanageable HRU numbers and simplifying computational cost in the Soil and Water Assessment Tool(SWAT) hydrologic modelling. However, being less representative of watershed heterogeneity and increasing the level of model output uncertainty are inevitable when minor HRU combinations are disproportionately eliminated. This study examined 20 scenarios by running the model with various HRU threshold settings to understand the mechanism of HRU threshold effects on watershed representation as well as streamflow predictions and identify the appropriate HRU thresholds. Findings show that HRU numbers decrease sharply with increasing HRU thresholds. Among different HRU threshold scenarios, the composition of land-use, soil, and slope all contribute to notable variations which are directly related to the model input parameters and consequently affect the streamflow predictions. Results indicate that saturated hydraulic conductivity, average slope of the HRU, and curve number are the three key factors affecting stream discharge when changing the HRU thresholds. It is also found that HRU thresholds have little effect on monthly model performance, while evaluation statistics for daily discharges are more sensitive than monthly results. For daily streamflow predictions, thresholds of 5%/5%/5%(land-use/soil/slope) are the optimum HRU threshold level for the watershed to allow full consideration of model accuracy and efficiency in the present work. Besides, the results provide strategies for selecting appropriate HRU thresholds based on the modelling goal.

关键词： hydrologic response unit hydrological model streamflow prediction upper Hunhe River watershed watershed representation uncertainty

The APR triangle:A practical zone in the Glissonean approach to laparoscopic anatomical right hepatectomy

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iLIVER 2022年第3期1卷 176-180页

作者： Jie Chen Ziyu Zhang Rui Zhou anzhi wang Jun Cao Yajin Chen Department of Hepatobiliary Surgery Sun Yat-sen Memorial HospitalSun Yat-Sen UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Medical Research CenterSun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouChina

Background:An understanding of vascular anatomy is crucial for the safe performance of laparoscopic anatomical liver *** discovered a triangular zone during the laparoscopic right liver surgery and termed this zone the APR *** purpose of this study was to determine the probability of the existence of the APR triangle and elucidate its various ***:Analyzed three-dimensional image reconstructions of 66 individuals who underwent liver surgery and calculated the statistics for various types of APR triangles under various grouping ***:The APR triangle was present in the majority of cases,with right hepatic vein trunk type in 68%and right hepatic vein branch type in 21%,*** angle between the right anterior and right posterior hepatic pedicles(AP&PP)was at most between 45 and 90°(74%).There was a 35%chance that at least one of the AP&PP was longer than 2 cm,and a 39%chance that both *** right posterior pedicle first branch would appear at the bifurcation of AP&PP in 13%***:The APR triangle is objectively present and may represent a practical zone for performing laparoscopic right hepatic anatomical resection more simply and safely.

关键词： Laparoscopic anatomical liver resection Vascular anatomy ARP triangle

The technique of step acousto-optical deflection and its application in high speed interferometric photography

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Chinese Journal of Acoustics 1993年第3期12卷 209-214页

作者： YAN Dapeng, HE anzhi, MIAO Pengcheng and wang Hailin (Department of applied physics. East China Institute of Technology. Nanjing 210014)

This paper presents the technique of step acousto-optical deflection and its application in high speed interferometric photography. When a light beam carrying the interferogram information passes through an acousto-optical deflector, it is deflected into 10 patterns (φ6 mm-φ8 mm in diameter) in time-sequence and recorded on a fixed film under the action of step pulsed ultrasonic waves. The exposure time of every pattern is adjustable within the range of 10^(-5)-3 ×10^(-6) s and the interval between two patterns is 10^(-5) s. The multi-frame interferograms of the transient combustion field of the first fire composition ignited by laser are recorded by using this method with combination of a laser interferometer, and the temperature distribution and its change with time is calculated quantitatively.

关键词： Acousto-optical deflection High speed interferometric photography Measurement. .

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面向物联网服务的资源表示模型研究

南京邮电大学学报（自然科学版） 2019年第1期39卷 24-33页

作者：郭永安王安之南京邮电大学江苏省无线通信重点实验室江苏南京210003

为了解决当前物联网应用系统中存在的资源异构性和海量性问题,基于本体描述模型讨论物联网服务和资源的语义化描述方法,并在服务和资源之间建立相应的映射关系,最终形成一种面向物联网服务的资源统一表示模型。该模型为实现物联网服务... 详细信息

为了解决当前物联网应用系统中存在的资源异构性和海量性问题,基于本体描述模型讨论物联网服务和资源的语义化描述方法,并在服务和资源之间建立相应的映射关系,最终形成一种面向物联网服务的资源统一表示模型。该模型为实现物联网服务和资源的最优化调度提供基础,同时能有效缓解当前物联网应用存在的垂直度较高问题。实验结果表明,该模型可以有效地对物联网中的原子服务和组合服务进行抽象表示,并能根据文中所提出的映射算法选择最佳的设备集以提高终端资源的利用率。

关键词：物联网资源表示模型服务语义表示 OWL-S 多终端聚合

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卷积神经网络的正则化方法综述

计算机应用研究 2024年第4期41卷 961-969页

作者：陈琨王安志贵州师范大学大数据与计算机科学学院贵阳550025

近年来,卷积神经网络已经广泛应用于计算机视觉各个领域中并取得了显著的效果。正则化方法是卷积神经网络的重要组成部分,它能避免卷积神经网络在模型训练的过程中出现过拟合现象。目前关于卷积神经网络正则化方法的综述较少,且大多缺... 详细信息

近年来,卷积神经网络已经广泛应用于计算机视觉各个领域中并取得了显著的效果。正则化方法是卷积神经网络的重要组成部分,它能避免卷积神经网络在模型训练的过程中出现过拟合现象。目前关于卷积神经网络正则化方法的综述较少,且大多缺乏对新提出的正则化方法的总结。首先对卷积神经网络中的正则化方法相关文献进行详细的总结和梳理,将正则化方法分为参数正则化、数据正则化、标签正则化和组合正则化;然后在ImageNet等公开数据集上,基于top-1 accuracy、top-5 accuracy等评价指标,对不同正则化方法的优缺点进行对比分析;最后讨论了卷积神经网络的正则化方法未来的研究趋势和工作方向。

关键词：卷积神经网络正则化方法过拟合泛化

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利用构造恢复原理制作古构造演化图

天然气工业 2006年第1期26卷 34-36页

作者：马如辉王安志中国石化西南分公司物探研究院

利用构造恢复原理,提出用“构造恢复法”来研究川西地区(复杂构造地区)的构造演化,它是一种新的构造演化分析方法,其原理是模拟地层沉积演化过程的逆过程,通过“去断层恢复”、“去褶皱恢复”、“去压实恢复”等方法,将目的层构造形态... 详细信息

利用构造恢复原理,提出用“构造恢复法”来研究川西地区(复杂构造地区)的构造演化,它是一种新的构造演化分析方法,其原理是模拟地层沉积演化过程的逆过程,通过“去断层恢复”、“去褶皱恢复”、“去压实恢复”等方法,将目的层构造形态逐渐恢复到刚沉积时的构造形态,从而得到不同地质时期目的层的“古构造图”。用该方法制作的古构造图成图精度有较大提高,在复杂构造地区也能较好地进行构造演化分析,并且在川西地区须家河组须二段储层构造演化分析中取得较好的应用效果。

关键词：构造恢复演化古构造图断层褶皱压实