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Sleep Status Among Children and Adolescents Aged 6-17 Years—China,2016-2017

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China CDC weekly 2023年第1期5卷 11-16页

作者： yushu zhang Zhengjing Huang Mei zhang Chun Li Zhenping Zhao Xiao zhang Yunqi Guan Nyasha Grace Mudoti Limin Wang Division of Chronic Disease and Risk Factor Surveillance National Center for Chronic and Non-communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina Department of Health Statistics School of Public HealthChina Medical UniversityShenyang CityLiaoning ProvinceChina Department of Non-communicable Disease Control and Prevention Zhejiang Provincial Center for Disease Control and PreventionHangzhou CityZhejiang ProvinceChina International Education School China Medical UniversityShenyang CityLiaoning ProvinceChina

Summary What is already known about this topic?There has been little to no description of sleep status among children and adolescents nationwide in recent years.What is added by this report?This report assesses the sleep duration and sleep patterns of children and adolescents in China.Approximately half of the adolescents did not get the recommended amount of sleep on school days,and more than half overslept on weekends.

关键词： sleep China. nationwide

TPE-H2MWD:an exact thumbnail preserving encryption scheme with hidden Markov model and weighted diffusion

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信息与电子工程前沿:英文版 2023年第8期24卷 1169-1180页

作者： Xiuli CHAI Xiuhui CHEN Yakun MA Fang ZUO Zhihua GAN yushu zhang School of Artificial Intelligence Henan Engineering Research Center for Industrial Internet of ThingsHenan UniversityZhengzhou450046China Henan Key Laboratory of Cyberspace Situation Awareness Zhengzhou450001China School of Software Intelligent Data Processing Engineering Research Center of Henan ProvinceInstitute of Intelligent Network SystemHenan UniversityKaifeng475004China College of Computer Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing211106China

With the substantial increase in image transmission,the demand for image security is increasing.Noise-like images can be obtained by conventional encryption schemes,and although the security of the images can be guaranteed,the noise-like images cannot be directly previewed and retrieved.Based on the rank-then-encipher method,some researchers have designed a three-pixel exact thumbnail preserving encryption(TPE2)scheme,which can be applied to balance the security and availability of images,but this scheme has low encryption efficiency.In this paper,we introduce an efficient exact thumbnail preserving encryption scheme.First,blocking and bit-plane decomposition operations are performed on the plaintext image.The zigzag scrambling model is used to change the bit positions in the lower four bit planes.Subsequently,an operation is devised to permute the higher four bit planes,which is an extended application of the hidden Markov model.Finally,according to the difference in bit weights in each bit plane,a bit-level weighted diffusion rule is established to generate an encrypted image and still maintain the same sum of pixels within the block.Simulation results show that the proposed scheme improves the encryption efficiency and can guarantee the availability of images while protecting their privacy.

关键词： Hidden Markov model Weighted diffusion Balance between usability and privacy Image encryption

Thermally rearranged covalent organic framework with flame-retardancy as a high safety Li-ion solid electrolyte

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eScience 2022年第3期2卷 311-318页

作者： Zhifang Wang yushu zhang Penghui zhang Dong Yan Jinjin Liu Yao Chen Qi Liu Peng Cheng Michael JZaworotko Zhenjie zhang Renewable Energy Conversion and Storage Center Frontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjin300071China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin300071China College of Pharmacy Nankai UniversityTianjin300071China Department of Chemical Sciences and Bernal Institute University of LimerickLimerickV94 T9PXIreland Department of Physics City University of Hong KongHong Kong999077China

Solid polymer electrolytes have demonstrated high promise to solve the safety problems caused by conventional liquid electrolytes in lithium ion batteries.However,the inherent flammability of most polymer electrolyte materials remains unresolved,hence hindering their further industrial application.Addressing this challenge,we designed and constructed a thermal-responsive imide-linked covalent organic framework(COF)bearing ortho-positioned hydroxy groups as precursors,which can conduct a thermal rearrangement to transform into a highly crystalline and robust benzoxazole-linked COF upon heating.Benefiting from the release of carbon dioxide through thermal rearrangement reaction,this COF platform exhibited excellent flame retardant properties.By contrast,classic COFs(e.g.,boronate ester,imine,olefin,imide linked)were all flammable.Moreover,incorpo-rating polyethylene glycol and Li salt into the COF channels can produce solid polymer electrolytes with outstanding flame retardancy,high ionic conductivity(6.42×10^(-4) S cm^(-1))and a high lithium-ion transference number of 0.95.This thermal rearrangement strategy not only opens a new route for the fabrication of ultrastable COFs,but also provides promising perspectives to designing flame-retardant materials for energy-related applications.

关键词： Covalent organic frameworks Thermal rearrangement Flame retardancy Solid polymer electrolytes Lithium-ion batteries

Effect of orchard age on soil nitrogen transformation in subtropical China and implications

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Journal of Environmental Sciences 2015年第8期27卷 10-19页

作者： yushu zhang Jinbo zhang Tongbin Zhu Christoph Müller Zucong Cai School of Geography Sciences Nanjing Normal University Institute of Soil and Fertilizer Fujian Academy of Agricultural Sciences Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Key Laboratory of Virtual Geographical Environment Ministry of Education Nanjing Normal University Department of Plant Ecology Justus-Liebig University Giessen

A better understanding of nitrogen transformation in soils could reveal the capacity for biological inorganic N supply and improve the efficiency of N fertilizers. In this study, a15 N tracing study was carried out to investigate the effects of converting woodland to orchard, and orchard age on the gross rates of N transformation occurring simultaneously in subtropical soils in Eastern China. The results showed that inorganic N supply rate was remained constant with soil organic C and N contents increased after converting woodland into citrus orchard and with increasing orchard age. This phenomenon was most probably due to the increase in the turnover time of recalcitrant organic-N, which increased with decreasing soil p H along with increasing orchard age significantly. The amo A gene copy numbers of both archaeal and bacterial were stimulated by orchard planting and increased with increasing orchard age. The nitrification capacity（defined as the ratio of gross rate of nitrification to total gross rate of mineralization） increased following the Michaelis–Menten equation, sharply in the first 10 years after woodland conversion to orchard, and increased continuously but much more slowly till 30 years. Due to the increase in nitrification capacity and unchanged NO3-consumption, the dominance of ammonium in inorganic N in woodland soil was shifted to nitrate dominance in orchard soils. These results indicated that the risk of NO3-loss was expected to increase and the amount of N needed from fertilizers for fruit growth did not change although soil organic N accumulated with orchard age.

关键词： 15N tracing technique Gross rates of nitrogen transformation Subtropical orchard soil

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一种边缘辅助的卫星影像云修复卷积神经网络

测绘地理信息 2024年第2期49卷 81-86页

作者：张雨姝戴佩玉武汉大学遥感信息工程学院湖北武汉430079 江苏省农业科学院江苏南京210014

遥感影像的云修复是改善影像质量、降低数据成本的一种重要手段。使用Landsat 8影像研究卷积神经网络在云修复中的应用,提出一种影像信息重建的新式网络结构——边缘辅助的门控卷积网络(edge-guided gated convolutional network,EGCN)... 详细信息

遥感影像的云修复是改善影像质量、降低数据成本的一种重要手段。使用Landsat 8影像研究卷积神经网络在云修复中的应用,提出一种影像信息重建的新式网络结构——边缘辅助的门控卷积网络(edge-guided gated convolutional network,EGCN)。该网络以多时相数据作为含云影像上被遮挡信息的辅助数据,主干网络为多时空门控卷积网络(spatial-temporal based gated convolutional network,STGCN),在多尺度特征融合模块引入一种改进的非局部(non-local,NL)模块——门控非局部(gated non-local,GNL)来替代传统的卷积层,并以边缘特征提取网络(edge network,ENet)为分支,从边缘信息层面进行特征引导。实验结果表明,GNL模块和ENet的加入均有助于提升云修复效果。

关键词：遥感影像云修复深度学习卷积神经网络

外出务工、家庭汇款对耕地撂荒的影响——基于流失效应与收入效应的分析

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经济与管理研究 2024年第4期45卷 38-55页

作者：张禹书张应良西南大学经济管理学院重庆400715 西南大学商贸学院

本文借助家庭内部分工理论构建外出务工影响耕地撂荒的理论分析框架,并基于2016—2018年中国劳动力动态调查数据实证分析外出务工对耕地撂荒的影响及其作用机制。研究结果显示,外出务工所带来的流失效应造成农户耕地生产有效劳动力投入... 详细信息

本文借助家庭内部分工理论构建外出务工影响耕地撂荒的理论分析框架,并基于2016—2018年中国劳动力动态调查数据实证分析外出务工对耕地撂荒的影响及其作用机制。研究结果显示,外出务工所带来的流失效应造成农户耕地生产有效劳动力投入不足,引致耕地撂荒行为的发生。同时,农户外出务工在非农部门获取超额的劳动回报,由此产生的收入效应并不会正向作用于农业生产性投资,实际导致了耕地保障功能的削弱,反而加剧了耕地撂荒。机制分析结果表明,外出务工主要是通过增加家庭汇款影响农户耕地撂荒行为。异质性分析结果显示,专业户家庭外出务工在一定程度上能够降低耕地撂荒行为的发生;外出务工对具有社会保障的农户家庭耕地撂荒的影响更为突出。因此,在保证农户拥有长期稳定的外出就业岗位和社会保障的基础上,要有效引导土地流转和托管,鼓励开展多种形式的农业适度规模经营以缓解耕地撂荒。

关键词：外出务工耕地撂荒流失效应收入效应家庭汇款

光周期对反刍动物激素分泌、生产性能和繁殖性能影响的研究进展

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动物营养学报 2024年第5期36卷 2721-2727页

作者：吕仁龙蒋睿珂张雨书张祎中国热带农业科学院热带作物品种资源研究所海口571101 东北农业大学动物科学技术学院哈尔滨150030 日本信州大学农学研究科上田3994511 河南科技大学动物科技学院洛阳471023

光周期是指昼夜周期中光照期和暗期长短的交替变化,它与不同类型和颜色的光线共同作用后,对动植物和人类生命活动规律产生重要影响。我国幅员辽阔,南北方光照时长差异明显,将这些光周期差异与现代养殖技术和气候变化等相结合应用于生产... 详细信息

光周期是指昼夜周期中光照期和暗期长短的交替变化,它与不同类型和颜色的光线共同作用后,对动植物和人类生命活动规律产生重要影响。我国幅员辽阔,南北方光照时长差异明显,将这些光周期差异与现代养殖技术和气候变化等相结合应用于生产,对促进家畜养殖节本增效和高品质畜产品生产具有重要意义。本文聚焦光周期对反刍动物的影响,主要针对光周期变化对反刍动物体内激素分泌、生产性能(生长性能、肉品质和泌乳性能)、繁殖性能和行为等的影响进行综述,并通过对比相关研究成果进一步解析光周期对反刍动物的综合影响,以期为光周期在反刍动物实际生产中的应用提供指导。

关键词：光周期反刍动物激素水平繁殖性能生产性能

Changes in intracellular and extracellular proteins after ERGIC3 knockdown in lung cancer:Proteins interacting with ERGIC3,HORN,and FLNA

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BIOCELL 2023年第8期47卷 1821-1833页

作者： WEI ZHAI XIANG ZHENG MENGYUAN LIU QIURONG ZHAO yushu zhang YUQING LUO SHANSHAN FENG JINJING WANG XUEYING LI MINGSONG WU Special Key Laboratory of Oral Disease Research and High Education Institute in Guizhou Province School of StomatologyZunyi Medical UniversityZunyi563006China Department of Genetics Zunyi Medical UniversityZunyi563006China Department of Pathology Affiliated Hospital of Zunyi Medical UniversityZunyi563008China

Objective:Endoplasmic reticulum-Golgi intermediate compartment 3(ERGIC3)promotes cell proliferation and metastasis in lung cancer,but its molecular mechanism is unclear.Methods:The GLC-82 cells were randomly divided into the ERGIC3i group and the negative control group.The cells were transfected with ERGIC3 siRNA or control siRNA in the groups,respectively.The ERGIC3-interacting proteins expressed in cells or extracellularly were isolated by the immunoprecipitation method and detected by isobaric tags for relative and absolute quantitation and liquid chromatography-tandem mass spectrometry.The differentially expressed proteins were determined by bioinformatic methods.Results:After ERGIC3 knockdown,88 extracellular differentially expressed proteins,41 upregulated and 47 down-regulated,were detected in the supernatant of cultured cells.Among 52 intracellular differentially expressed proteins,33 were up-regulated and 19 down-regulated.Cluster analysis showed that the extracellular differential proteins are mainly involved in Ca2+binding and transport and I-kappa B kinase/NF-kappa B signal transduction.The upregulated proteins are mainly involved in the biological process of H3-K27 and H3-K4 methylation in cells.Co-immunoprecipitation assay showed that proteins interacting with ERGIC3 were rich in cytoskeleton construction and RHO GTPases activated p21-activated kinases.The intersection of these two research methods shows that ERGIC3 interacts with HORN and filamin A(FLNA).Conclusion:Proteomic analyses reveal that ERGIC3 acts as a vesicle transmembrane protein on the distribution of various extracellular and intracellular proteins and regulates the extracellular and intracellular biological processes by specifically binding hornin(HORN)and FLNA proteins.These findings maybe provide new methods and ideas for ERGIC3 as a therapeutic target for lung cancer.

关键词： ERGIC3 Lung cancer Proteomics Mass spectrum iTRAQ Bioinformatics

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智慧城市建设促进了城市可持续发展吗

宏观经济研究 2024年第2期 74-91页

作者：张德钢唐瑜梳重庆师范大学经济与管理学院

智慧城市建设被视为解决由于快速城市化而导致的各种城市问题的一种全新治理模式,然而,城市系统是否因为智慧城市建设变得更具可持续?这是一个有待回答的问题。本文基于2005—2021年中国272个地级城市的面板数据,运用多时点双重差分、... 详细信息

智慧城市建设被视为解决由于快速城市化而导致的各种城市问题的一种全新治理模式,然而,城市系统是否因为智慧城市建设变得更具可持续?这是一个有待回答的问题。本文基于2005—2021年中国272个地级城市的面板数据,运用多时点双重差分、合成双重差分等方法分析智慧城市建设对城市可持续发展的影响效应。研究发现,智慧城市建设促进了城市可持续发展,一系列稳健性检验和工具变量估计均佐证研究结论的稳健性,但政策效应在不同区位、类型和特征的城市具有差异。机制分析显示,促进绿色技术创新、推动产业结构转型升级和提高资源配置效率是智慧城市建设促进城市可持续发展的有效路径。进一步分析发现,政府环境注意力和财政压力在智慧城市建设影响城市可持续发展过程中分别发挥着正向和负向的调节作用。本文的研究厘清了智慧城市建设与城市可持续发展之间的逻辑关系,并提供了诸多有价值的经验证据和政策参考。

关键词：智慧城市城市可持续发展双重差分