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Science China Mathematics 2024年第11期67卷 2433-2452页

作者： feng shao Institute of Mathematics Academy of Mathematics and Systems ScienceChinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of Sciences

Let X be an irreducible Hermitian symmetric space of compact type(IHSS for short).In this paper,we give the irreducible decomposition of *** a by-product,we give a cohomological characterization of the rank of ***,we introduce pseudoeffective thresholds to measure the bigness of tangent bundles of smooth complex projective varieties precisely and calculate them for irreducible Hermitian symmetric spaces of compact type.

关键词： tangent bundle pseudoeffective threshold irreducible Hermitian symmetric space of compact type (IHSS) multiplicity free action

An Active Deception Defense Model Based on Address Mutation and Fingerprint Camouflage

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China Communications 2024年第7期21卷 212-223页

作者： Wang Shuo Chu Jiang Pei Qingqi shao feng Yuan Shuai Zhong Xiaoge State Key Laboratory of Astronautic Dynamics Xi’an Satellite Control CenterXi’an 710043China State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China Shaanxi Key Laboratory of Blockchain and Secure Computing Xidian UniversityXi’an 710071China

The static and predictable characteristics of cyber systems give attackers an asymmetric advantage in gathering useful information and launching *** reverse this asymmetric advantage,a new defense idea,called Moving Target Defense(MTD),has been proposed to provide additional selectable measures to complement traditional ***,MTD is unable to defeat the sophisticated attacker with fingerprint tracking *** overcome this limitation,we go one step beyond and show that the combination of MTD and Deception-based Cyber Defense(DCD)can achieve higher performance than either of *** particular,we first introduce and formalize a novel attacker model named Scan and Foothold Attack(SFA)based on cyber kill ***,we develop probabilistic models for SFA defenses to provide a deeper analysis of the theoretical effect under different defense *** models quantify attack success probability and the probability that the attacker will be deceived under various conditions,such as the size of address space,and the number of hosts,attack analysis ***,the experimental results show that the actual defense effect of each strategy almost perfectly follows its probabilistic ***,the defense strategy of combining address mutation and fingerprint camouflage can achieve a better defense effect than the single address mutation.

关键词： address mutation deception defense fingerprint camouflage moving target defense probabilistic model

Progress in research on metal-based materials in stabilized Zn anodes

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Rare Metals 2024年第1期43卷 20-40页

作者： Le Li shao-feng Jia Ming-Hui Cao Yong-Qiang Ji Heng-Wei Qiu Dan Zhang Shaanxi Key Laboratory of Industrial Automation School of Mechanical EngineeringShaanxi University of TechnologyHanzhong 723001China School of Electronic and Information Engineering Qingdao UniversityQingdao 266071China State Key Laboratory for Artifcial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua UniversityBeijing 100084China Shaanxi Key Laboratory of Catalysis School of Chemistry and Environment ScienceShaanxi University of TechnologyHanzhong 723001China

Aqueous zinc-ion batteries(ZIBs) combine the benefits of metallic Zn anodes with those of aqueous electrolytes and are well suited for large-scale energy storage because of their inherent high safety, cost-effectiveness, and eco-friendliness. Currently, the practical application of such batteries is hindered by the poor cycling performance of Zn anodes due to uncontrolled dendrite formation and severe side reactions, although recent reports suggest that these problems can be mitigated through the modification of Zn anodes with metal-based *** that the mechanisms of improving Zn deposition and the structural evolution of metal-based materials have not been systematically reviewed, we herein systematically overview the metal-based materials used to stabilize Zn anodes, starting with a brief summary of the anode working mechanism and the challenges faced by stabilized Zn anodes. Subsequently, the design principles of Zn anodes stabilized by metal-based materials and the related recent progress are reviewed, and the key challenges and perspectives for the future development of such Zn anodes are proposed.

关键词： Zinc-ion batteries(ZIBs) Zn anode Metalbased materials Alloying metal Stabilized Zn anodes

Study on the occurrence and influencing factors of gastrointestinal symptoms in hemodialysis patients with uremia

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2157-2166页

作者： Dan Yuan Xiao-Qi Wang feng shao Jing-Jing Zhou Zhong-Xin Li Department of Nephrology Beijing Luhe Hospital Affiliated to Capital Medical UniversityBeijing 101100China

BACKGROUND Gastrointestinal symptoms are common in patients with uremia undergoing hemodialysis,and these symptoms seriously affect patients'*** To assess the occurrence and factors influencing gastrointestinal symptoms in patients with uremia undergoing *** We retrospectively selected 98 patients with uremia who underwent regular hemo-dialysis treatment in the blood purification center of our hospital from December 2022 to December *** gastrointestinal symptoms and scores of each dimension were evaluated using the Gastrointestinal Symptom Grading Scale(GSRS).Patients were divided into gastrointestinal symptoms and no gastrointestinal symptom groups according to whether they had gastrointestinal *** factors that may affect gastrointestinal symptoms were identified by single-factor *** logistic regression analysis was performed to identify independent risk factors for gastrointestinal *** Gastrointestinal symptoms included indigestion,constipation,reflux,diarrhea,abdominal pain,and eating disorders,and the total average GSRS score was 1.35±*** study showed that age,number of tablets,dialysis time,glucocorticoid,parathyroid hormone(PTH),combined diabetes mellitus and C-reactive protein(CRP)were independent risk factors for gastrointestinal symptoms in patients with uremia undergoing hemodialysis,whereas body mass index(BMI),hemoglobin(Hb),and urea clearance index were independent protective factors(P<0.05).CONCLUSION Gastrointestinal symptoms are mostly mild in patients with uremia undergoing hemodialysis,most commonly including dyspepsia,eating disorders,and gastroesophageal *** independent influencing factors mainly include the BMI,age,number of pills taken,dialysis time,urea clearance index,Hb,use of glucocorticoids,and thyroid hormone ***,CRP,and diabetes are clinically related factors influencing the occurrence of gastrointestinal symptoms,and targeted prevention can be perform

关键词： Uremic hemodialysis Gastrointestinal symptoms Influencing factors Blood pressure dialysis Chronic renal failure

Cooperative activation of sodium channels for downgrading the energy efficiency in neuronal information processing

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Chinese Physics B 2024年第5期33卷 758-763页

作者：严浩然颜家琦俞连春邵玉峰 School of Physical Science and Technology Lanzhou Center for Theoretical PhysicsLanzhou UniversityLanzhou 730000China Key Laboratory of Theoretical Physics of Gansu Province and Key Laboratory of Quantum Theory and Applications of MoELanzhou UniversityLanzhou 730000China Department of Neuroscience AnatomyHistologyand EmbryologyKey Laboratory of Preclinical Study for New Drugs of Gansu ProvinceSchool of Basic Medical SciencesLanzhou UniversityLanzhou 730000China

The Hodgkin–Huxley model assumes independent ion channel activation,although mutual interactions are common in biological *** raises the problem why neurons would favor independent over cooperative channel *** this study,we evaluate how cooperative activation of sodium channels affects the neuron’s information processing and energy *** of the stochastic Hodgkin–Huxley model with cooperative activation of sodium channels show that,while cooperative activation enhances neuronal information processing capacity,it greatly increases the neuron’s energy *** a result,cooperative activation of sodium channel degrades the energy efficiency for neuronal information *** discovery improves our understanding of the design principles for neural systems,and may provide insights into future designs of the neuromorphic computing devices as well as systematic understanding of pathological mechanisms for neural diseases.

关键词： energy efficiency ion channel noise action potential generation neuronal dynamics

黄河流域生态补偿的时空格局、区域差异及分布动态演进

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环境科学 2024年第10期45卷 5853-5867页

作者：赵政楠茹少峰西北大学经济管理学院西安710127 西北大学中国西部经济发展研究院西安710127

在区域协调发展与生态环境治理能力现代化建设的背景下,跨界流域空间协同治理得到了广泛关注,然而流域生态补偿面临犬牙交错的权责关系,横向生态补偿机制尚未健全.基于能值生态足迹模型测度2007~2021年黄河流域90个城市的生态补偿额度,... 详细信息

在区域协调发展与生态环境治理能力现代化建设的背景下,跨界流域空间协同治理得到了广泛关注,然而流域生态补偿面临犬牙交错的权责关系,横向生态补偿机制尚未健全.基于能值生态足迹模型测度2007~2021年黄河流域90个城市的生态补偿额度,并结合探索性空间数据分析、Dagum基尼系数、核密度估计与空间Markov链分析方法探究其时空格局、区域差异及分布动态演进特征.结果表明:①黄河流域生态补偿额度的时空格局差异明显,总体上自西北向东南梯度增加,高值区域集中在生态本底优越或经济发达的地区;②生态补偿存在显著的正向空间集聚现象,整体呈“北冷南热”的空间分布态势;③生态补偿总体差异有所扩大,超变密度是造成总体差异的主要来源;④生态补偿存在轻微的多级分化现象且“空间俱乐部趋同”特征明显,但随时长扩大,各城市生态补偿维持原有水平的概率有所下降,流动性渐趋增加.因此,加大不同领域生态补偿投入、强化区域间协同发展和发挥空间溢出效应是解决当前黄河流域生态补偿空间非均衡态势的重要途径.

关键词：黄河流域横向生态补偿能值生态足迹时空演变 Dagum基尼系数核密度估计空间Markov链

难以界定的“伤害”——对密尔“伤害”概念三种常见解读的评析

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道德与文明 2024年第3期 104-114页

作者：邵风西南财经大学马克思主义学院四川成都611130

学者们对密尔“伤害原则”中“伤害”这一概念有许多讨论。目前主要有三种解读思路:以大卫·布林克为代表的学者认为,只有侵犯了他人的重要利益和权利,才能称之为“伤害”到了他人;以乔纳森·莱利为代表的学者认为,应该将“伤害”理解... 详细信息

学者们对密尔“伤害原则”中“伤害”这一概念有许多讨论。目前主要有三种解读思路:以大卫·布林克为代表的学者认为,只有侵犯了他人的重要利益和权利,才能称之为“伤害”到了他人;以乔纳森·莱利为代表的学者认为,应该将“伤害”理解为可察觉到的损害,比如身体伤害、强制禁锢、经济损失等;以皮尔斯·特纳为代表的学者则认为,任何对他人造成负面影响的行为都构成了对他人的“伤害”,“伤害原则”的唯一目的是反对家长主义。这三种思路基本涵盖了对“伤害”所能做出的各种程度上的限定。但是,这三种解读方案都存在着问题。如果仅仅就“伤害”谈“伤害”,那么“伤害”这一概念将始终难以界定。事实上,要正确理解“伤害”,我们必须首先澄清“伤害原则”所依赖的“功利原则”,不能绕过“功利”去理解“伤害”。

关键词：约翰·密尔伤害伤害原则自由

Heavy neutral leptons in gauged U(1)Lμ-Lτ at muon collider

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Chinese Physics C 2024年第9期48卷 36-49页

作者： Ru-Yi He Jia-Qi Huang Jin-Yuan Xu Fa-Xin Yang Zhi-Long Han feng-Lan shao School of Physics and Technology University of JinanJinan 250022China School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China

Heavy neutral leptons N are the most appealing candidates to generate tiny neutrino *** studied the signature of heavy neutral leptons in gauged U(1)Lμ-Lτ at a muon *** under the U(1)Lμ-Lτ symmetry,the heavy neutral leptons can be pair produced via the new gauge boson Z' at the muon collider as μ^(+)μ^(-)→Z′*→NN AND μ^(+)μ^(-)→Z′(*)γ→NNγ.We then performed a detailed analysis on the lepton number violation signature μ^(+)μ^(-)→NN→μ^(±)μ^(±)W■W■ and μ^(+)μ^(-)→NN→μ^(±)μ^(±)W■W■γ at the 3 TeV muon collider,where the hadronic decays of W boson are treated as fat-jets *** lepton number violation signatures have quite clean backgrounds at the muon *** simulation shows that a wide range of viable parameter space is within the reach of the 3 TeV muon *** instance,with new gauge coupling g'=0.6 and an integrated luminosity of 1000 fb^(-1),the μ^(±)μ^(±)JJ signal could probe m_(Z′)■13 ***,if the gauge boson mass satisfies 2m_(N)<√s,the μ^(±)μ^(±)JJγ signature would be more promising than the μ^(±)μ^(±)JJ signature.

关键词： heavy neutral leptons gauged U(1)_(Lμ-Lτ) muon collider lepton number violation

Blasting induced dynamic stress concentration and failure characteristics of deep-buried rock tunnel

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Journal of Central South University 2024年第7期31卷 2321-2340页

作者： ZHAO Rui TAO Ming XIANG Gong-liang WANG shao-feng ZHAO Hua-tao School of Resources and Safety Engineering Central South UniversityChangsha 410083China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China

In this study,the dynamic stress concentration factors(DSCF)around a straight-wall arch tunnel(SWAT)were solved analytically utilizing the complex variable function methods and Duhamel’s *** effects of wavelength,incident angle,and blasting rising time on the DSCF distribution were *** results pointed out dynamic disturbances resulting in compressive stress concentration in the vertical direction and tensile stress in the incident *** the wavelength and rising time increased,there was a tendency for the amplitude of stress concentration to initially rise and then ***,a series of 3D FEM models were established to evaluate the effect of different initial stress states on the dynamic failure of the tunnel surrounding *** results indicated that the failure of the surrounding rock was significantly influenced by the direction of the static maximum principal stress and the direction of the dynamic *** the coupling of static and blasting loading,damage around the tunnel was more prone to occur in the dynamic and static stress concentration coincidence ***,the damage modes of rock tunnel under static stress and blasting disturbance from different directions were summarized and a proposed support system was *** results reveal the mechanisms of deep-buried rock tunnel destruction and dynamically triggered rockburst.

关键词： stress wave scattering dynamic stress analysis rock tunnel dynamic failure analysis

Novel damage constitutive models and new quantitative identification method for stress thresholds of rocks under uniaxial compression

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Journal of Central South University 2024年第8期31卷 2658-2675页

作者： DU Kun YI Yang LUO Xin-yao LIU Kai LI Peng WANG shao-feng School of Resources and Safety Engineering Central South UniversityChangsha 410083China Zhongnan Engineering Corporation Limited Power Construction Corporation of ChinaChangsha 410014China

Four key stress thresholds exist in the compression process of rocks,i.e.,crack closure stress(σ_(cc)),crack initiation stress(σ_(ci)),crack damage stress(σ_(cd))and compressive strength(σ_(c)).The quantitative identifications of the first three stress thresholds are of great significance for characterizing the microcrack growth and damage evolution of rocks under *** this paper,a new method based on damage constitutive model is proposed to quantitatively measure the stress thresholds of ***,two different damage constitutive models were constructed based on acoustic emission(AE)counts and Weibull distribution function considering the compaction stages of the rock and the bearing capacity of the damage ***,the accumulative AE counts method(ACLM),AE count rate method(CRM)and constitutive model method(CMM)were introduced to determine the stress thresholds of ***,the stress thresholds of 9 different rocks were identified by ACLM,CRM,and *** results show that the theoretical stress−strain curves obtained from the two damage constitutive models are in good agreement with that of the experimental data,and the differences between the two damage constitutive models mainly come from the evolutionary differences of the damage *** results of the stress thresholds identified by the CMM are in good agreement with those identified by the AE methods,i.e.,ACLM and ***,the proposed CMM can be used to determine the stress thresholds of rocks.

关键词： stress threshold acoustic emission damage constitutive model damage element quantitative method