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Journal of Integrative Agriculture 2013年第2期12卷 364-373页

作者： JIA Xiang-ping HUANG Ji-kun XIANG Cheng hou lin-ke ZHANG Fu-suo CHEN Xin-ping CUI Zhen-ling Holger Bergmann Center for Chinese Agricultural Policy Institute for Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Graduate University Chinese Academy of Sciences College of Resources and Environmental Sciences China Agricultural University Georg-August-Universitaet Goettingen

Chemical fertilizer plays an important role in increasing food production in China. Nevertheless, excessive nitrogen fertilizer use in China has resulted in severe environmental problems. The goal of this paper is to examine the impacts of an improved nitrogen management （INM） training experiment on farmers＇ chemical nitrogen （N） use behaviors in maize production in China. Based on household data collected from 813 maize farmers in Shandong, China, this study finds that while INM training can significantly reduce farmers＇ N fertilizer use, an INM training is not sufficient to change farmer＇s practices significantly, and farmers only partially adopted the recommended INM. This study reveals that China faces challenges to transform its agriculture to a low-carbon one. The research also sheds light on China＇s extension system and future technologies in meeting the objectives of reducing the excessive nitrogen fertilizer use in agricultural production.

关键词： maize nitrogen training farmer China

Farmer's Knowledge on GM Technology and Pesticide Use:Evidence from Papaya Production in China

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Journal of Integrative Agriculture 2012年第12期11卷 2107-2115页

作者： hou lin-ke HUANG Ji-kun WANG Xiao-bing HU Rui-fa XUE Chun-ling Center for Chinese Agricultural Policy Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences School of Management and Economics Beijing Institute of Technology College of Economic and Management South China Agricultural University

Genetically modified （GM） technology can significantly reduce pesticide use and increase yield in crop production. However, the benefit from reducing pesticide use varies substantially among farmers. The overall goal of this paper is to understand the relationship between farmers＇ knowledge of GM technology and pesticide use in genetically modified papaya （GMP） production. Based on a survey of 223 farms in three main papaya production provinces in 2010, the data show that almost all papaya planted in 2009 was genetically modified. However, only 28% of papaya farmers knew that they planted GMP, and 55% of them did not know GMP is resistant to papaya ringspot virus （PRSV）. Further analyses using the general least squares （GLS） method show that farmers＇ knowledge of GMP significantly affects their pesticide use, and potential gain from GM technology is far below its full potential. The paper concludes with policy implications.

关键词： genetically modified papaya knowledge pesticide use

Multi-model ensemble learning for battery state-of-health estimation:Recent advances and perspectives

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Journal of Energy Chemistry 2025年第1期100卷 739-759页

作者： Chuanping lin Jun Xu Delong Jiang Jiayang hou Ying Liang Zhongyue Zou Xuesong Mei State key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Shaanxi key Laboratory of Intelligent Robots School of Mechanical Engineering Xi'an Jiaotong University Department of Electrical Engineering and Automation Luoyang Institute of Science and Technology School of Mechanical Engineering Hangzhou Dianzi University

The burgeoning market for lithium-ion batteries has stimulated a growing need for more reliable battery performance monitoring. Accurate state-of-health(SOH) estimation is critical for ensuring battery operational performance. Despite numerous data-driven methods reported in existing research for battery SOH estimation, these methods often exhibit inconsistent performance across different application scenarios. To address this issue and overcome the performance limitations of individual data-driven models,integrating multiple models for SOH estimation has received considerable attention. Ensemble learning(EL) typically leverages the strengths of multiple base models to achieve more robust and accurate outputs. However, the lack of a clear review of current research hinders the further development of ensemble methods in SOH estimation. Therefore, this paper comprehensively reviews multi-model ensemble learning methods for battery SOH estimation. First, existing ensemble methods are systematically categorized into 6 classes based on their combination strategies. Different realizations and underlying connections are meticulously analyzed for each category of EL methods, highlighting distinctions, innovations, and typical applications. Subsequently, these ensemble methods are comprehensively compared in terms of base models, combination strategies, and publication trends. Evaluations across 6 dimensions underscore the outstanding performance of stacking-based ensemble methods. Following this, these ensemble methods are further inspected from the perspectives of weighted ensemble and diversity, aiming to inspire potential approaches for enhancing ensemble performance. Moreover, addressing challenges such as base model selection, measuring model robustness and uncertainty, and interpretability of ensemble models in practical applications is emphasized. Finally, future research prospects are outlined, specifically noting that deep learning ensemble is poised to advance ens

关键词： Contrastive Learning

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关于互联网众筹平台操纵行为的实证研究

软科学 2019年第11期33卷 92-97页

作者：於勇成吕玉霞侯麟科李亮中泰证券股份有限公司博士后科研工作站济南250002 清华大学五道口金融学院北京100083 山东管理学院经贸学院济南250307 山东大学经济研究院济南250100

以京东众筹的交易数据为基础,通过分析众筹分布的盈余光滑度,探寻到众筹操纵的痕迹,构建了界定操纵行为的三类标准;随后通过Logit模型,实证分析了众筹项目特征对众筹操纵的影响情况,发现公司法人发起的项目存在众筹操纵行为的概率更高,... 详细信息

以京东众筹的交易数据为基础,通过分析众筹分布的盈余光滑度,探寻到众筹操纵的痕迹,构建了界定操纵行为的三类标准;随后通过Logit模型,实证分析了众筹项目特征对众筹操纵的影响情况,发现公司法人发起的项目存在众筹操纵行为的概率更高,募集金额大的项目存在众筹操纵行为的概率更高;最后,通过检验众筹操纵与关注度和好评度的关系,发现操纵行为与项目关注度具有显著负相关关系,从不同角度识别的操纵行为与项目好评度有不同的相关关系。

关键词：互联网众筹操纵行为影响因素关注度好评度

Practical approach for detecting k-nonseparability of multipartite quantum states

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 32-48页

作者： Jie Guo Jinchuan hou Xiaofei Qi Kan He College of Mathematics Taiyuan University of Technology School of Mathematics and Statistics Shanxi University key Laboratory of Complex Systems and Data Science of Ministry of Education Shanxi University

The instantaneous detection of entanglement in quantum states poses a significant challenge in the fields of quantum computation and quantum information, and there are no practical methods or tools to complete this task satisfactorily so far. We propose a sufficient and necessary criterion of k-nonseparability for any n-partite finite or infinite dimensional systems, 2 ≤ k ≤ n. This criterion serves as the foundation for a practical scheme designed to detect entanglement and k-nonseparability across multipartite finite-dimensional systems. To exemplify the application of our scheme, we have developed a software tool that facilitates swift and precise identification of entanglement, k-nonseparability, and genuine entanglement within n-qubit systems, specifically tailored for systems with 2 ≤ n ≤ 4.

关键词： multipartite systems entanglement states entanglement witnesses ${\bm~k}$-nonseparability

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环境污染与畜牧业空间布局研究

中国人口·资源与环境 2011年第12期21卷 65-69页

作者：侯麟科仇焕广崔永伟王晓工中国科学院地理科学与资源研究所农业政策研究中心北京100101 中国科学院研究生院北京100049 农业部规划设计研究院农业发展与投资研究所北京100101 东北农业大学黑龙江哈尔滨150030

畜禽养殖业迅速发展,造成环境污染问题日益突出。随着居民收入和城市人口的扩张,养殖业有进一步向东部经济发达地区和人口密集区域集中的趋势,加剧了畜禽污染所带来的危害。该文建立了两个企业的两阶段动态博弈模型,分析环境污染税费征... 详细信息

畜禽养殖业迅速发展,造成环境污染问题日益突出。随着居民收入和城市人口的扩张,养殖业有进一步向东部经济发达地区和人口密集区域集中的趋势,加剧了畜禽污染所带来的危害。该文建立了两个企业的两阶段动态博弈模型,分析环境污染税费征收对畜禽养殖业空间布局的影响。运用反向回溯法,得到模型的均衡解。分析结果表明,如果固定成本较低,发达地区的畜禽企业会在不发达地区设立分厂,以获得当地的产品销售市场,畜禽养殖业会根据环境污染税费引致的成本重新布局生产。因此,国家可以有效利用环境污染税费调节畜禽养殖业布局。最优环境污染税费与畜牧产品需求、畜牧产品变动成本和排污量高度相关,政府部门可以根据规划目标在不同区域设定不同的环境污染税率;国家还可以对较大规模畜牧业生产企业提供适当补贴,降低企业的迁移成本,以有效避免畜禽养殖企业向经济发达地区和人口密集区域集中,优化畜禽养殖业的空间布局。

关键词：畜禽养殖业环境污染动态博弈空间布局

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我国城乡流动人口教育回报率研究

人口学刊 2012年第2期34卷 64-73页

作者：马岩杨军蔡金阳王晓兵侯麟科中国科学院地理科学与资源研究所农业政策研究中心北京100101 中国科学院研究生院北京100049

随着我国经济的快速发展,劳动力市场的教育回报率受到广泛关注。利用三省20个村庄近3 500个农村劳动力的大样本调查资料,采用改进的Mincer模型,分析我国城乡流动人口教育回报状况以及地区间的差异。研究发现,我国城乡流动人口年平均教... 详细信息

随着我国经济的快速发展,劳动力市场的教育回报率受到广泛关注。利用三省20个村庄近3 500个农村劳动力的大样本调查资料,采用改进的Mincer模型,分析我国城乡流动人口教育回报状况以及地区间的差异。研究发现,我国城乡流动人口年平均教育回报率约为2%,其中初中、高中及以上的教育回报率约为3.3%,高于小学及以下的教育回报;城乡流动人口接受职业培训的回报率显著高于教育回报率,这暗示职业培训在城乡流动人口的人力资本积累中起着非常关键的作用;不同区域之间的教育和职业培训回报率存在明显差异,这些差异说明由于迁移成本等原因,当前我国非农部门对农业部门的溢出效应还存在一定的区域性。

关键词：教育回报率 Mincer模型流动人口

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie Shi Changle hou Jingjing Dong Dong Chen Jianzhong Li key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

Defect Engineering with Rational Dopants Modulation for High‑Temperature Energy Harvesting in Lead‑Free Piezoceramics

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Nano-Micro Letters 2025年第3期17卷 87-101页

作者： Kaibiao Xi Jianzhe Guo Mupeng Zheng Mankang Zhu Yudong hou key Laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124People’s Republic of China

High temperature piezoelectric energy harvester(HTPEH)is an important solution to replace chemical battery to achieve independent power supply of HT wireless ***,simultaneously excellent performances,including high figure of merit(FOM),insulation resistivity(ρ)and depolarization temperature(Td)are indispensable but hard to achieve in lead-free piezoceramics,especially operating at 250°C has not been reported ***,well-balanced performances are achieved in BiFeO3–BaTiO3 ceramics via innovative defect engineering with respect to delicate manganese *** to the synergistic effect of enhancing electrostrictive coefficient by polarization configuration optimization,regulating iron ion oxidation state by high valence manganese ion and stabilizing domain orientation by defect dipole,comprehensive excellent electrical performances(Td=340°C,ρ250°C>10^(7)Ωcm and FOM_(250°C)=4905×10^(–15)m^(2)N^(−1))are realized at the solid solubility limit of manganese *** HT-PEHs assembled using the rationally designed piezoceramic can allow for fast charging of commercial electrolytic capacitor at 250°C with high energy conversion efficiency(η=11.43%).These characteristics demonstrate that defect engineering tailored BF-BT can satisfy high-end HT-PEHs requirements,paving a new way in developing selfpowered wireless sensors working in HT environments.

关键词： Lead-free piezoceramic Defect engineering Dopants modulation High-temperature Piezoelectric energy harvester

Establishing a new testing protocol of the electrochemical stability window for electric double-layer capacitors

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Science China Chemistry 2025年第1期68卷 217-225页

作者： Ruilin hou Xiaoxi Zhao Tingting Liang Qingyun Dou Shan Xu Xingbin Yan School of Materials Science and Engineering Sun Yat-sen University Laboratory of Clean Energy Chemistry and Materials Lanzhou Institute of Chemical Physics Chinese Academy of Sciences College of Engineering and Applied Sciences Nanjing University Center of Industrial Analysis and Testing Guangdong Academy of Science

The electrochemical stability window(ESW) is crucial for determining the energy density of electric double-layer capacitors(EDLCs). However, current ESW testing protocols of EDLCs are strongly affected by artificial factors, thereby leading to unreliable result. To solve this problem, we first identify the key shortcomings of the traditional protocols by analyzing their test principles. Subsequently, taking an aqueous carbon-based EDLC as an example, we design a side reaction descriptor to represent the response difference in the charging capacitance to side reactions between the cyclic voltammetry and galvanostatic chargedischarge methods. With the aid of this descriptor, we propose a new ESW testing protocol, which is not only able to completely avoid the adverse influence of subjective factors but also fully consider the operating condition limitations. The protocol can be extended from the single electrode to the full device. This work proposes a more rigorous definition of ESW and provides a reliable protocol for evaluating the ESW of EDLCs.

关键词： electric double-layer capacitors electrochemical stability window testing protocol side reaction descriptor operating limitation