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Dynamic Update Scheme of Spectrum Information Based on Spectrum Opportunity Incentive in the Database-Assisted Dynamic Spectrum Management

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China Communications 2024年第3期21卷 75-90页

作者： Zhang Yu Chen Yong He Panfeng cai Yueming Sixty-third Research Institute National University of Defense TechnologyNanjing 210007China College of Communications Engineering Army of Engineering UniversityNanjing 210007China

To solve the problem of delayed update of spectrum information(SI) in the database assisted dynamic spectrum management(DB-DSM), this paper studies a novel dynamic update scheme of SI in DB-DSM. Firstly, a dynamic update mechanism of SI based on spectrum opportunity incentive is established, in which spectrum users are encouraged to actively assist the database to update SI in real time. Secondly, the information update contribution(IUC) of spectrum opportunity is defined to describe the cost of accessing spectrum opportunity for heterogeneous spectrum users, and the profit of SI update obtained by the database from spectrum allocation. The process that the database determines the IUC of spectrum opportunity and spectrum user selects spectrum opportunity is mapped to a Hotelling model. Thirdly, the process of determining the IUC of spectrum opportunities is further modelled as a Stackelberg game by establishing multiple virtual spectrum resource providers(VSRPs) in the database. It is proved that there is a Nash Equilibrium in the game of determining the IUC of spectrum opportunities by VSRPs. Finally, an algorithm of determining the IUC based on a genetic algorithm is designed to achieve the optimal IUC. The-oretical analysis and simulation results show that the proposed method can quickly find the optimal solution of the IUC, and ensure that the spectrum resource provider can obtain the optimal profit of SI update.

关键词： database-assisted dynamic spectrum management Hotelling information updating contribution spectrum information updating Stackelberg

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Strong anisotropy of thermal transport in the monolayer of a new puckered phase of PdSe

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Frontiers of physics 2024年第3期19卷 143-151页

作者： Zheng Shu Huifang Xu Hejin Yan Yongqing cai Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoTaipaMacao 999078China

We examine the electronic and transport properties of a new phase PdSe monolayer with a puckered structure calculated by first-principles and Boltzmann transport *** spin−orbit coupling is found to play a negligible effect on the electronic properties of PdSe *** lattice thermal conductivity of PdSe monolayer exhibits remarkable anisotropic characteristic due to anisotropic phonon group velocity along different directions and its intrinsic structure *** compromised electronic mobility despite a relatively low thermal conduction results in a moderate ZT value but significantly anisotropic thermoelectric performance in single-layer *** present work suggests that the remarkable thermal transport anisotropy of PdSe monolayer can be used for thermal management,and enhance the scope of possibilities for heat flow manipulation in PdSe based *** sizeable puckered cages and wiggling lattice implies it an ideal platform for ionic and molecular engineering for thermoelectronic applications.

关键词： 2D materials first-principles calculations phonon

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Lactate:a prospective target for therapeutic intervention in psychiatric disease

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Neural Regeneration Research 2024年第7期19卷 1473-1479页

作者： Yanhui cai Haiyun Guo Tianle Han Huaning Wang Department of Psychiatry Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina Department of Anesthesiology and Perioperative Medicine Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

Although antipsychotics that act via monoaminergic neurotransmitter modulation have considera ble therapeutic effect,they cannot completely relieve clinical symptoms in patients suffering from psychiatric disorde *** may be attributed to the limited range of neurotransmitters that are regulated by psychotropic *** findings indicate the need for investigation of psychotropic medications that target less-studied neurotransmitte *** these candidate neurotransmitters,lactate is developing from being a waste metabolite to a glial-neuronal signaling molecule in recent *** studies have suggested that cerebral lactate levels change considerably in numerous psychiatric illnesses;animal experiments have also shown that the supply of exogenous la ctate exerts an antidepressant *** this review,we have described how medications targeting newer neurotransmitte rs offer promise in psychiatric diseases;we have also summarized the advances in the use of lactate(and its corresponding signaling pathways)as a signaling *** addition,we have described the alterations in brain lactate levels in depression,anxiety,bipolar disorder,and schizophrenia and have indicated the challenges that need to be overcome before brain lactate can be used as a therapeutic target in psychopharmacology.

关键词： antidepressant anxiety bipolar disorder depression lactate psychiatric disease psychopharmacology schizophrenia signal molecular therapeutics

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Chirality enables thermal magnon transistors

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 161-166页

作者： Tao Yu Chengyuan cai Gerrit E.W.Bauer School of Physics Huazhong University of Science and TechnologyWuhan 430074China .WPI-AIMR and Institute for Materials Research and SCIS Tohoku UniversitySendai 980-8577Japan Kavli Institute for Theoretical Sciences University of Chinese Academy of SciencesBeijing 100190China

We report a theory of thermal spin pumping into proximity magnets under a transverse-bias-driven heat flow of magnons in magnetic films when the dipolar coupling to the magnetic gate is tuned to be “chiral”. While there is no rectification of the magnon current in the film, we predict that chirality diverts a large percentage(50% for perfect chirality) of it into the gate. This transverse thermal spin pumping effect can be controlled by rotating the film magnetization and may help manage the heat flow in future magnonic circuits.

关键词： magnon chirality quantum transport transistor

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Primordial black holes and curvature perturbations from false vacuum islands

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 58-72页

作者： Rong-Gen cai Yu-Shi Hao Shao-Jiang Wang School of Physical Science and Technology Ningbo UniversityNingbo 315211China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Asia Pacific Center for Theoretical Physics Pohang 37673Republic of Korea

Recently,much attention has been focused on the false vacuum islands that are flooded by an expanding ocean of true-vacuum bubbles slightly later than most of the other parts of the *** delayed decay regions will accumulate locally larger vacuum energy density by staying in the false vacuum longer than those already transited into the true vacuum.A false vacuum island with thus acquired density contrast of a super-horizon size will evolve locally from radiation dominance to vacuum dominance,creating a local baby Universe that can be regarded effectively as a local closed *** such density contrasts of super-horizon sizes can ever grow large enough to exceed the threshold of gravitational collapse,primordial black holes will form similar to those collapsing curvature perturbations on super-horizon scales induced by small-scale enhancements during *** not,such density contrasts can still induce curvature perturbations potentially observable *** this paper,we revisit and elaborate on the generations of primordial black holes and curvature perturbations from delayed-decayed false vacuum islands during asynchronous first-order phase transitions with fitting formulas convenient for future model-independent studies.

关键词： first-order phase transitions primordial black holes curvature perturbations

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Study on crustal thickness and the prediction of prolific depressions:the Bohai Basin as an example

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Acta Oceanologica Sinica 2024年第4期43卷 92-104页

作者： Mengke cai Gongcheng Zhang Wanyin Wang Dingding Wang College of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China Key Laboratory of Marine Geology and Environment Chinese Academy of SciencesQingdao 266071China National Engineering Research Center of Offshore Oil and Gas Exploration Beijing 100028China Department of Earth Environment and Resources SciencesUniversity of Naples FedericoⅡNaples 80138Italy

The deep crustal structure is closely related to oil and gas *** the oil and gas enrichment of depressions based on the Moho depth and crustal thickness is a promising research topic with significant implications for guiding exploration in petroliferous *** this study,seismic data were used as a constraint on the use of satellite gravity anomaly inversion to obtain the distribution of Moho depth and crustal thickness in the Bohai *** factors were calculated to analyze the differential distribution of deep crustal structural *** indicators,including the minimum Moho depth,minimum crustal thickness,sum of Moho stretching factors,and sum of crustal stretching factors,were *** component analysis was applied to reduce the dimensionality of the multi-indicator system and obtain an oil and gas enrichment score for quantitative prediction of favorable prolific *** deviation between the inverted Moho depth and seismic constraints was small;thus,the data effectively reflect the variations in the characteristics of each *** analysis revealed significant statistical features related to the minimum Moho depth/crustal thickness and the sum of Moho/crustal stretching factors associated with prolific *** on the oil and gas enrichment score,the depressions were classified into four categories related to their different deep crustal structural *** active ClassⅠ,ClassⅡ,and ClassⅢdepressions are predicted to be favorable prolific *** study expands the research on quantitatively predicting favorable prolific depressions in the Bohai Basin using the deep crustal structure and can contribute to reducing production costs and improving exploration efficiency in future explorations.

关键词： Bohai Basin satellite gravity anomaly deep crustal structure Moho depth crustal thickness favorable prolific depression

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高校少数民族预科生健康档案建设探索

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集美大学学报（教育科学版） 2016年第4期17卷 34-37页

作者：蔡灿龙集美大学教师教育学院福建厦门361021

高校少数民族预科生健康档案的建设是保障与促进高校少数民族预科生健康的有效平台及途径,采用文献资料等方法对高校少数民族预科生健康档案的建设内容、建设流程及建设注意事项进行探索。可以提出建设高校少数民族预科生家庭背景档案... 详细信息

高校少数民族预科生健康档案的建设是保障与促进高校少数民族预科生健康的有效平台及途径,采用文献资料等方法对高校少数民族预科生健康档案的建设内容、建设流程及建设注意事项进行探索。可以提出建设高校少数民族预科生家庭背景档案、个体体质档案、个体体检档案、生活事件及反应方式档案、人格档案、心理健康档案、学习档案、体育运动档案等关系高校少数民族预科生身心健康的重要档案的内容及办法。

关键词：高校少数民族预科生健康档案身心健康

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教育管理学研究的主题、存在的问题以及未来走向——近十年教育管理研究的文献梳理与分析

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四川教育学院学报 2010年第1期26卷 5-8页

作者：蔡灿新广州大学城华南师范大学公共管理学院广州510631

对近十年教育管理学方面发表的文献进行梳理和分析,认为当前教育管理学的研究主题主要有历史研究、理论介绍、学科建设等,存在的主要问题是介绍性的东西多,原创性东西少;方法上突破不够;合作性研究偏少。我们认为教育管理学未来走向应... 详细信息

对近十年教育管理学方面发表的文献进行梳理和分析,认为当前教育管理学的研究主题主要有历史研究、理论介绍、学科建设等,存在的主要问题是介绍性的东西多,原创性东西少;方法上突破不够;合作性研究偏少。我们认为教育管理学未来走向应表现为以下几个方面:加强本土性教育管理学结构和系统的思考;在方法论上,要借鉴当前其他学科好的研究方法来突破教育管理学研究的状态;在协作上,要加强区域合作,课题合作,以促进教育管理研究的突破与创新。

关键词：教育管理学主题走向

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体育院校体育教育专业教育教学改革探索

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体育科学研究 2017年第4期21卷 65-67页

作者：蔡灿龙集美大学教师教育学院福建厦门361021

教师资格考试及教师招考是体育院校体育教育专业毕业生就业的主要途经。采用文献资料、问卷调查、专家访谈等方法对集美大学体育教育专业教育教学的现状进行调查和分析。结合教师资格全国统考及教师招考的要求对体育院校体育教育专业教... 详细信息

教师资格考试及教师招考是体育院校体育教育专业毕业生就业的主要途经。采用文献资料、问卷调查、专家访谈等方法对集美大学体育教育专业教育教学的现状进行调查和分析。结合教师资格全国统考及教师招考的要求对体育院校体育教育专业教育教学改革提出相应的对策与建议。

关键词：教师资格体育教育专业教育教学改革

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试论当前的国际政治格局——权力与意识形态的新内涵

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南昌教育学院学报 2012年第5期27卷 7-8页

作者：蔡灿彬中国人民大学国际关系学院北京100872

随着冷战的结束,国际的政治格局再一次发生了重大变化,逐渐的进入了新旧更替的关键时刻。这样对于当前的国际政治格局而言,无疑是具有重大的政治意义,并呈现出很多新的政治特征。冷战结束以来,国际政治格局进入了新旧交替的关键时期。... 详细信息

随着冷战的结束,国际的政治格局再一次发生了重大变化,逐渐的进入了新旧更替的关键时刻。这样对于当前的国际政治格局而言,无疑是具有重大的政治意义,并呈现出很多新的政治特征。冷战结束以来,国际政治格局进入了新旧交替的关键时期。这使得当前国际政治格局发生了巨大变化,具备了许多新的特点。国际政治的纷繁复杂,已经不可能长期保持"一家独大,众强纷争"的政治格局,国际局势势必呈现多极化的发展方向。

关键词：国际局势政治格局意识形态

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