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数字幸福感:心理健康教育的时代需求

河北学刊 2024年第2期44卷 186-192页

作者：黄潇潇俞国良中国人民大学教育学院中国人民大学心理研究所

数字幸福感,既是加快数字健康融合发展的必经途径,也是落实健康中国战略的必然要求。区别于传统幸福感,它不仅关注数字活动给用户带来的积极与消极体验,还侧重于如何在个体因素、设备因素和环境因素的三重影响下管理和控制数字技术,以... 详细信息

数字幸福感,既是加快数字健康融合发展的必经途径,也是落实健康中国战略的必然要求。区别于传统幸福感,它不仅关注数字活动给用户带来的积极与消极体验,还侧重于如何在个体因素、设备因素和环境因素的三重影响下管理和控制数字技术,以期实现数字技术益处的最大化。这对突破当前数字心理健康教育理论建构不牢、测评指标模糊、矫治效果甚微的困境具有重要意义。因此,未来需重视数字幸福感的功效、建立健全数字心理健康教育、完善新时代心理健康教育内容,从而响应数字心理健康的时代号召。

关键词：数字幸福感数字心理健康数字心理健康教育心理健康教育

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“不确定性”是人类心理健康的重要风险因素

山西师大学报（社会科学版） 2024年第1期51卷 88-94页

作者：俞国良邵蕾中国人民大学心理研究所北京100872 中国人民大学教育学院北京100872

相比身体健康,心理健康与幸福是人类生存的更高追求,是“健康中国与幸福中国”的终极目标之一。在经济、社会、生态环境风险与日俱增的现代社会,“不确定性”挑战对人类心理健康的威胁已不容忽视。基于不确定管理理论和生命史理论等理... 详细信息

相比身体健康,心理健康与幸福是人类生存的更高追求,是“健康中国与幸福中国”的终极目标之一。在经济、社会、生态环境风险与日俱增的现代社会,“不确定性”挑战对人类心理健康的威胁已不容忽视。基于不确定管理理论和生命史理论等理论假设,个体对“不确定性”的厌恶与生俱来。“不确定性”不仅影响个体的决策行为,而且会增加焦虑情绪,引发抑郁、睡眠障碍等心理健康问题。尤其对于儿童和青少年等风险应对能力相对欠缺的弱势群体,以及不确定性容忍度和心理弹性较低的高敏感群体,“不确定性”对心理健康的负面影响更为严重。为此,面对“不确定性”陡增的时代特点,个体应准确识变,减少内在的不合理认知;应科学应变,增强风险应对能力;同时,联合家校社三方主动求变,汇聚保护心理健康的外部资源,在风险社会中构建心理健康的“确定性”支持网络。

关键词：心理健康不确定性环境风险不确定管理理论生命史理论

Experimental Study on the Viscosity of Soft Cohesive Sediments Around A Vibrating Pillar

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China Ocean Engineering 2022年第2期36卷 289-298页

作者： DONG Chuan-ming yu guo-liang ZHANG Huai-xin ZHANG Min-xi SKLOE CISSESchool of Naval ArchitectureOcean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Navigation College Dalian Maritime UniversityDalian 116026China

Offshore structures are subject to environmental loads such as waves,currents,or wind,which may induce cyclic lateral vibration at the *** cyclic vibration loadings may affect the rheological property of the sediments adjacent to the foundation and the stability of the *** is especially true when the structures are founded on cohesive sedimentary *** this study,the viscosity of soft cohesive sediments adjacent to a vibrating pillar was considered,and as a primary index of the rheological characteristics of the *** investigation was performed using the sinking ball *** experimental findings indicated that the viscosity of cohesive sediments decrease with increase of the liquidity index and vibration intensity.A simple semi-empirical formula was *** structures of the cohesive sediments were destroyed due to the mechanical vibration,and the sediments were fluidized during vibration *** shear strength of the cohesive sediments decreased with increased vibration intensity,not only because of the increased pore water pressure but also the decreased viscosity of cohesive sediments following sediment fluidization.

关键词： cohesive sediment vibration intensity viscosity coefficient fluidization liquidity index

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霍尔锚落锚贯入力峰值及相应深度的分析

船海工程 2024年第3期53卷 101-106页

作者：羊玓雯王闻恺杨少鹏张民曦喻国良上海交通大学海洋工程国家重点实验室上海200240 上海交通大学海洋智能装备与系统教育部重点实验室上海200240 交通运输部水运科学研究院北京100088 山东科技大学海洋科学与工程学院山东青岛266590

针对霍尔锚在静水中的垂直落锚情况,通过理论分析和物理试验,分析锚质量、触地速度、海床土体强度,以及土体粒径等对霍尔锚贯入力峰值及相应贯入深度的影响。结果表明,贯入力峰值及其对应的贯入深度与锚质量和触地速度呈二次函数关系,... 详细信息

针对霍尔锚在静水中的垂直落锚情况,通过理论分析和物理试验,分析锚质量、触地速度、海床土体强度,以及土体粒径等对霍尔锚贯入力峰值及相应贯入深度的影响。结果表明,贯入力峰值及其对应的贯入深度与锚质量和触地速度呈二次函数关系,与土体粒径呈指数函数关系,以此分别提出霍尔锚贯入力峰值及相应贯入深度的计算公式,为海底结构物强度的设计与防护提供技术支撑。

关键词：霍尔锚落锚贯入力贯入深度海床

Correlation Between Yield Stress of Silty Mud Sediments and Continuous Oscillatory Shearing Properties

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China Ocean Engineering 2022年第2期36卷 223-232页

作者： CHEN Xiao-hui ZHANG Min-xi yuE Shao-lin ZHOU Huan yu guo-liang SKLOE CISSEDepartment of Ocean and Civil Engineering Shanghai Jiao Tong UniversityShanghai 200240China CCCC Road&Bridge Special Engineering Co. Ltd.Wuhan 430061China

Analyzing the rheological properties of silty beds subjected to continuous oscillatory shear loading is crucial for understanding the morphological deformation of the seabed and ensuring safety in geological and marine engineering *** this study,the effects of oscillatory shearing properties on the yield stress(S_(u))of silty sediments were quantitatively *** effects of oscillatory shear strength(0-3),water content(26.6%-70.84%),and particle diameter(8.79-50μm)were examined extensively through a series of laboratory *** results indicated that the three aforementioned parameters were the major factors that affected the rheological characteristics of silty ***,their effects could be elucidated using the yield stress of cohesive sediments as the indicator *** ratio of yield stress(S_(u)/S_(u0))varied as the oscillatory shear strength increased up to a critical value,Λ_(cr).S_(u)bsequently,the ratio remained at a constant *** was deduced that the yield stress decreased with increasing oscillatory shear strength forΛΛ_(cr),the sediments entered an equilibrium fluidization stage,and the yield stress remained almost constant,irrespective of the oscillatory shear ***,during the equilibrium fluidization stage,it was observed that the ratio S_(u)/S_(u0)did not vary with water content but decreased as the particle diameter ***,based on regression analysis of the experimental data for non-equilibrium and equilibrium fluidization stages,a correlation between yield stress of silty sediments and continuous oscillatory shearing properties was *** correlation can aid in understanding the changes in solid resistance and assessing safety in piling ***,it can provide a theoretical guidance for reducing soil resistance in marine structures using mechanical vibrations.

关键词： silty sediments yield stress water content particle diameter oscillatory shear strength

Microstructural evolution,mechanical properties and degradation mechanism of PS-PVD quasi-columnar thermal barrier coatings exposed to glassy CMAS deposits

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Rare Metals 2024年第7期43卷 3329-3340页

作者： Zi-yue yu liang-liang Wei Xing-Ye guo Bao-Peng Zhang Qing He Hong-Bo guo School of Materials Science and Engineering Beihang University Key Laboratory of High-Temperature Structure Materials and Protective Coatings (Ministry of Industry and Information Technology) Beihang University Surface Engineering Research Institute Chinese Academy of Agricultural Mechanization Sciences

Thermal barrier coatings（TBCs） applied in aeroengines tend to be attacked by molten calcia-magnesiaalumino-silicate（CMAS） at high operating ***-stabilized zirconia（YSZ） coatings with quasicolumnar microstructure were fabricated by plasma spray physical vapor deposition（PS-PVD） *** chemic al changes,micros tructural transform ation,mechanical properties and degradation mechanisms of the CM AS-interacted TBCs in the thermal cycling tests were *** YSZ grains were dissolved in the CMAS melts,and then the ZrO2grains were reprecipitated with spherical shape,accompanying with phase transformation from tetragonal（t） to monoclinic（m）.The thermal cycling tests reveal that the YSZ coating fails at the early stage due to the attack of *** fractures in intracolumns lead to partial spallation of the *** failure of the coating occurs at the interfaces between thermally grown oxides（TGO） layer and YSZ topcoat;especially,the hardness and Young's modulus of the YSZ coatings increase intensively,as the coatings were infiltrated by the CMAS for a long time.

关键词： CMAS Thermal barrier coatings Young’s modulus Thermal cycling behavior PS-PVD

Cr-assisted low-temperature densification of(Ti,Zr,Nb,Ta,Mo)C high-entropy carbides with ultrafine grain and enhanced hardness

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Journal of Advanced Ceramics 2024年第6期13卷 780-788页

作者： Yang Liu Jiaji liang Weiming guo Shikuan Sun yu Tian Hua-Tay Lin School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China State Key Laboratory of High Performance Tools Guangdong University of TechnologyGuangzhou 510006China School of Material Science and Energy Engineering Foshan UniversityFoshan 528000China

While the use of low-melting-point metals as sintering aids for high-entropy carbide(HEC)ceramics has been well established,their existence can compromise hardness due to residual metallic *** study demonstrates an innovative strategy to meet this challenge,where(Ti,Zr,Nb,Ta,Mo)C high-entropy carbide ceramics with ultrafine grains and enhanced hardness are obtained through chromium(Cr)-metal-assisted spark plasma sintering(SPS)at a temperature as low as 1600℃.The results show that the addition of 5 vol%Cr promotes the formation of highly densified single HEC phase ceramics with a high relative density(98.4%)and an ultrafine-grained microstructure(0.17μm).This low-temperature densification mechanism can be attributed to Cr’s solid-solution effect within the matrix and the increased carbon vacancies generated during *** grain size of the(Ti,Zr,Nb,Ta,Mo)C ceramics with 5 vol%Cr metal addition is significantly smaller than that of Cr-free(Ti,Zr,Nb,Ta,Mo)C ceramics sintered at 2000℃(3.03μm)or via traditional low-temperature liquid-phase sintering(1.3–1.5μm).Importantly,the addition of 5 vol%Cr substantially increased the hardness of the ceramics,with a remarkable increase from 23.57 to 28.16 GPa compared to that of the pure(Ti,Zr,Nb,Ta,Mo)C ceramics,owing to the fine-grain strengthening and solid-solution strengthening *** work highlights the uniqueness of Cr metal as a sintering aid in achieving densification and hardness improvements in(Ti,Zr,Nb,Ta,Mo)C ceramics,offering a promising strategy for improving the properties of HEC materials for further development in the near future.

关键词： solid solution sinterability hardness enhancement (Ti,Zr,Nb,Ta,Mo)C high-entropy carbide(HEC)ceramics

Review on dietary supplements as an effective improvement of Alzheimer's disease:focus on structures and mechanisms

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Food Science and Human Wellness 2024年第4期13卷 1787-1805页

作者： Sheng Li Yinling Wei Zhenzhen liang Lingli guo Xiaojiang Hao yu Zhang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China College of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016China

Alzheimer’s disease(AD),the major form of neurodegenerative diseases that can severely impede normal cognitive function,makes it one of the most common fatal *** are currently over 50 million AD patients *** neuropathology of AD is perplexing and there is a scarcity of disease-modifying ***,early diagnosis of AD has been made possible with the discovery of biological markers associated with pathology,providing strong support for the improvement of the disease *** search for inhibitors of AD markers from dietary supplements(DSs)has become a major hot *** with the widespread use of DSs,DSs containing polyphenols,alkaloids,terpenes,polysaccharides and other bioactive components can prevent AD by reducing Aβdeposition,inhibiting tau protein hyperphosphorylation,reconstructing synaptic dysfunction,weakening cholinesterase activity,regulating mitochondrial oxidative stress,neuronal inflammation and *** review summarizes the anti-AD effects of the main DSs and their bioactive constituents,as well as the potential molecular mechanisms covers from 2017 to ***,we discussed the opportunities and challenges faced by DSs in the process of AD prevention and treatment,aiming to further provide new perspectives for functional food development.

关键词： Dietary supplements Bioactive ingredients Alzheimer’s disease Mechanism of action

A Novel Analysis Approach of Uniform Persistence for an Epidemic Model with Quarantine and Standard Incidence Rate

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Acta Mathematicae Applicatae Sinica 2024年第3期40卷 695-707页

作者： Song-bai guo yu-ling XUE Xi-liang LI Zuo-huan ZHENG School of Science Beijing University of Civil Engineering and ArchitectureBeijing 102616China School of Mathematics and Statistics Hainan Normal UniversityHaikou 571158China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China School of Mathematics and Information Science Shandong Technology and Business UniversityYantai 264005China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China

Inspired by the transmission characteristics of the coronavirus disease 2019(COVID-19),an epidemic model with quarantine and standard incidence rate is first developed,then a novel analysis approach is proposed for finding the ultimate lower bound of the number of infected individuals,which means that the epidemic is uniformly persistent if the control reproduction number R_(c)>*** approach can be applied to the related biomat hem at ical models,and some existing works can be improved by using *** addition,the infection-free equilibrium V^(0)of the model is locally asymptotically stable(LAS)if R_(c)1.

关键词： uniform persistence epidemic model control reproduction number quarantine standard incidence rate