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A Gorni-Zampieri Pair of a Homogeneous Polynomial Map

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Communications in Mathematical Research 2013年第4期29卷 320-328页

作者： Liu Da-yan du Xian-kun School of Mathematics Jilin University School of Mathematics Shandong University

In this paper, we improve the algorithm and rewrite the function make- Pairing for computing a Gorni-Zampieri pair of a homogeneous polynomial map. As an application, some counterexamples to PLDP （dependence problem for power lin- car maps） are obtained, including one in the lowest dimension （n = 48） in all suchcounterexamples one has found up to now.

关键词： Gorni-Zampieri pair homogeneous dependence problem power linear map

Separation-enrichment method for airborne disease spores based on microfluidic chip

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International Journal of Agricultural and Biological Engineering 2021年第5期14卷 199-205页

作者： Yafei Wang Xiaodong Zhang Ning Yang Guoxin Ma Xiaoxue du Hanping Mao School ofAgricultural Engineering Jiangsu UniversitZhenjiang 212013JiansiChina Key Laboratory of Moderm Agricultural Equipment and Techmology Ministry of EducationJiangsu UniversitZhenjiang 212013JiangsuChina School of Electrical and Informnation Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

Airborne diseases are likely to cause crop yield reduction,which has aroused widespread *** this study,a two-stage separation-enrichment structure microfluidic chip with a compound field for separation and enrichment of the greenhouse crops airborne disease spores directly from gas flow was *** chip is mainly composed of three parts:arc structure pretreatment channel,semicircular electrode structure and collection *** 5.1 software was used to simulate the designed microfluidic chip.30μm particles were used to represent *** spores,25μm particles were used to represent *** spores,and 16μm particles were used to represent *** *** simulation results showed that the separation and enrichment efficiency of 16μm particles,25μm particles,and 30μm particles was 88%,91%,and 94%,*** experimental verification results were observed under a *** results showed that the separation and enrichment efficiency of *** spores,*** spores and *** spores was 75.7%,83.8%and 89.4%,*** a result,the designed microfluidic chip can be used to separate and enrich the spores of airborne diseases of greenhouse crops,which can provide a basis for the research of real-time monitoring technology for greenhouse airborne diseases.

关键词： greenhouse crop disease airborne spore microfluidic chip

有氧运动对自发性高血压大鼠心肌血红素氧合酶活性及血红素氧合酶-1mRNA表达的影响

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中国康复医学杂志 2011年第7期26卷 655-658页

作者：任彩玲余志琪张钧赣南医学院康复学院江西赣州341000 兰州城市学院体育系扬州大学体育学院

目的:观察有氧运动对自发性高血压大鼠(SHR)心肌血红素氧合酶(HO)活性及HO-1mRNA表达的影响,探讨适宜的有氧运动对高血压性心肌肥大的防治作用及机制。方法:雄性Wistar大鼠6只为正常对照组(C组),雄性自发性高血压大鼠16只,随机分为高血... 详细信息

目的:观察有氧运动对自发性高血压大鼠(SHR)心肌血红素氧合酶(HO)活性及HO-1mRNA表达的影响,探讨适宜的有氧运动对高血压性心肌肥大的防治作用及机制。方法:雄性Wistar大鼠6只为正常对照组(C组),雄性自发性高血压大鼠16只,随机分为高血压组(S组)和高血压运动组(T组)。T组每日进行60min无负重游泳,每周6次,共9周,用RT-PCR方法检测大鼠心脏HO-1mRNA表达。结果:与C组相比,S组心肌HO活性显著降低(P<0.05);与S组相比,T组心肌HO活性显著升高(P<0.05)。与C组相比,各组心肌HO-1mRNA表达差异均有显著性意义,S组心肌HO-1mRNA表达显著升高(P<0.01);与S组相比,T组心肌HO-1mRNA表达也显著升高(P<0.01)。结论:说明长期有规律的运动可以升高SHR心肌HO活性和HO-1mRNA表达。

关键词：血红素氧合酶心肌肥大有氧运动

Preface: Special Issue on Optimization Models and Algorithms in Artificial Intelligence

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Journal of the Operations Research Society of China 2019年第4期7卷 511-513页

作者： Ya-Xin Peng Shao-Yi du Tie-Yong Zeng Department of Mathematics School of ScienceShanghai UniversityShanghai 200444China Institute of Artificial Intelligence and Robotics Xi’an Jiaotong UniversityXi’an 710049China Department of Mathematics The Chinese University of Hong KongHong KongChina

Artificial intelligence(AI)and its applications have been a hot topic in recent years,while the optimization architecture is one of its key *** fact,typical AI models are often represented by minimizing or maximizing a certain objective/energy ***,an optimization model with a fast and robust algorithm is of great importance for *** mathematical optimization models are based on human knowledge or physical hypothesis and have been playing a vital role in *** call them model-driven *** model-driven papers are presented in this special issue to deal with the restoration and registration *** the development of machine learning algorithms and computational resources,data-driven methods have been becoming more and more useful in AI,due to their flexibility and efficiency for large-scale *** are two data-driven papers presented in this issue to solve the classification and data-generating problems.

关键词： optimization generating becoming

Flexible,high-strength titanium nanowire for scaffold biomimetic periodontal membrane

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Biosurface and Biotribology 2021年第1期7卷 23-29页

作者： Jin Li Licheng Hua Weiyuan Wang Chenjie Gu Jianke du Conghu Hu School of mechanical Engineering and Mechanics Key Laboratory of Impact and Safety EngineeringMinistry of EducationNingbo UniversityZhejiang NingboChina Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Nanjing University of Aeronautics and AstronauticsNanjingChina State Key Laboratory of Tribology Tsinghua UniversityBeijingChina Department of stomatology Zhejiang University School of MedicineAffiliated Hangzhou First People's HospitalZhejiang HangzhouChina Department of Microelectronics and Engineering Ningbo UniversityZhejiang NingboChina

A layer of micro-sized periodontal membrane can buffer most chewing forces to protect the interface between the natural tooth root and alveolar *** dental implants usually direct contact onto the alveolar bone without a buffer layer,which increases the risk of surface *** main purpose of this work was the bionic design of a flexible layer of nanowire scaffold on a titanium implant surface according to the function of the periodontal *** of nanowires were woven into a superhydrophilic layer of porous *** evolution of mechanical properties displayed that the biomimetic nanowire scaffold could absorb a maximum of about 1.59 KJ energy per square centi-meter by low-speed *** minimum tensile strength of one nanowire was 2 GPa.A biomimetic flexible periodontal membrane connection functioning between the natural tooth root and alveolar bone has great potential value for developing advanced artificial dental implants for dental restorations.

关键词： titanium strength sized

Synthesis of Hierarchically Porous FAU/γ-Al2O3 Composites with Different Morphologies via Directing Agent Induced Method

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China Petroleum Processing & Petrochemical Technology 2016年第3期18卷 22-34页

作者： Wang Jia Zhao Tianbo Li Zunfeng Zong Baoning du Zexue Zeng Jianli Key Laboratory of Cluster Science of Ministry of Education Beijing Institute of TechnologyBeijing 100081 SINOPEC Research Institute of Petroleum Processing Beijing 100083

Zeolite FAU composites with a macro/meso-microporous hierarchical structure were hydrothermally synthesized using macro-mesoporous γ-Al_2O_3 monolith as the substrate by means of the liquid crystallization directing agent(LCDA) induced method. No template was needed throughout the synthesis processes. The structure and porosity of zeolite composites were analyzed by means of X-ray powder diffraction(XRD), scanning electron microscopy(SEM) and N_2adsorption-desorption isotherms. The results showed that the supported zeolite composites with varied zeolitic crystalline phases and different morphologies can be obtained by adjusting the crystallization parameters, such as the crystallization temperature, the composition and the alkalinity of the precursor solution. The presence of LCDA was defined as a determinant for synthesizing the zeolite composites. The mechanisms for formation of the hierarchically porous FAU zeolite composites in the LCDA induced synthesis process were discussed. The resulting monolithic zeolite with a trimodal-porous hierarchical structure shows potential applicability where facile diffusion is required.

关键词： monolithic FAU/γ-Al2O3 composites hierarchically porous different morphologies directing agent induced method

An ESU SoC Balancing Control Method with Output Current Ripple Suppression Ability in DC Microgrid 36

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An ESU SoC Balancing Control Method with Output Current Ripp...

Government integrity and corporate investment efficiency

第36届中国控制会议

作者： Lipeng Jia Chunshui du Chenghui Zhang Alian Chen School of Control Science and Engineering Shandong University

ISBN: (纸本)9781538629185

To balance the state-of-charge（SoC） of distributed energy storage units（ESUs） in dc microgrid,it is necessary to adjust the output power of each ESU according to its SoC,but the traditional SoC-based adaptive droop control methods can’t adjust output power and suppress output ripple current simultaneously when there are several single-phase inverters connected to the dc bus.A SoC balancing method with output current ripple suppression ability is proposed in this *** adjustable virtual resistor is introduced through low pass filter（LPF） to adjust the output dc current to balance the SoC of ESUs,while a constant virtual inductor is introduced at twice fundamental frequency through band pass filter（BPF） to suppress output ripple *** results are provided to validate the effectiveness and reasonability of the proposed control method.

关键词： State-of-charge distributed energy storage units dc microgrid ripple current low pass filter band pass filter

来源： cnki会议评论

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China Journal of Accounting Research 2018年第3期11卷 213-232页

作者： Jing du Wanfu Li Bin Lin Yu Wang Sun Yat-sen Business School Sun Yat-sen University Enterprise and NPO Internal Control Research Center Sun Yat-sen University School of Accounting Nanjing University of Finance & Economics

We explore the relation between government integrity and firms' investment efficiency in the context of China's deepening reforms and its strengthening the social credit system. We find that government integrity is positively associated with the investment efficiency of listed companies in China. Government integrity is negatively related to corporate underinvestment, but insignificantly related to corporate overinvestment. Higher government integrity reduces underinvestment in non-state-owned firms, but this relation is not significant in state-owned firms. Furthermore, we find that the negative relation between government integrity and underinvestment is only significant for firms in industries that receive supportive government policies. This study enriches research on corporate investment by adopting the perspective of government integrity, and supplements the literature on government integrity and its economic consequences. Our study also provides micro-level empirical evidence that strengthening government integrity will promote the economic transformation of China.

关键词： Government integrity Investment efficiencty Types of share ownership Industrial policies’support

LLaMA-LoRA Neural Prompt Engineering:A Deep Tuning Framework for Automatically Generating Chinese Text Logical Reasoning Thinking Chains

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Data Intelligence 2024年第2期6卷 375-408页

作者： Songlin Chen Weicheng Wang Xiaoliang Chen Peng lu Zaiyan Yang Yajun du School of Computer and Software Engineering Xihua Universitychengdu 610039P.R.china Department of Computer Science and Operations Research University of MontrealMontrealQC H3C3J7Canada College of Artificial intelligence Beijing University of Posts and TelecommunicationsBeijing100876China

The exption of Chinese natural language processing(NLP)has stimulated research in the broader NLP ***,existing large language models have limitations in comprehending and reasoning in *** paper addresses these limitations by enhancing Chinese language models comprehension and reasoning capabilities while minimizing resource *** propose LLaMA-LoRA,a neural prompt engineering framework that builds upon the LLaMA-13B model and incorporates the Low-Rank Adaptation(LoRA)of Large Language Models technique for ***-of-Thought(CoT)are crucial for generating intermediate reasoning chains in language models,but their effectiveness can be limited by isolated language *** reasoning resulting from conventional prompts negatively impacts model *** prompts are introduced to encourage reasoning chain generation and accurate answer *** the model with an extensive corpus of Chinese CoT data enhances its comprehension and reasoning *** LLaMA-LoRA model demonstrates exceptional performance across numerous Chinese language tasks,surpassing benchmark performance achieved by related language models such as GPT-3.5,Chat-GLM,and OpenAssistant,delivering accurate,comprehensive,and professional *** availability of our open-source model code facilitates further research in the field of Chinese text logical reasoning thinking chains.

关键词： Chinese natural language processing Neural prompt engineering Large language models Low-Rank adaptation Chain-of-thought