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Generativity of Self-Organizing Processes and Their Correlative Description in Terms of a Formal Language of Meta-Ordinal Generative Nature, in the Light of the Maximum Ordinality Principle and the Explicit Solution to the “Three-Body Problem”
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作者 Corrado Giannantoni 《Journal of Applied Mathematics and Physics》 2023年第10期3159-3202,共44页
The main objective of this paper is to demonstrate that the internal processes of Self-Organizing Systems represent a unique and singular process, characterized by their specific generativity. This process can be mode... The main objective of this paper is to demonstrate that the internal processes of Self-Organizing Systems represent a unique and singular process, characterized by their specific generativity. This process can be modeled using the Maximum Ordinality Principle and its associated formal language, known as the “Incipient” Differential Calculus (IDC). 展开更多
关键词 Maximum Ordinality principle Solution to the three-Body Problem” Generativity of Self-Organizing Processes Formal Language of Ordinal Generativity Formal Language of Meta-Ordinal Generativity
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Organic Unity in The Merchant of Venice
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作者 唐恩萍 《海外英语》 2017年第20期155-156,共2页
The ending(Act V) of The Merchant of Venice makes this play a great comedy because it skillfully represents the unity of the organic whole which is highly emphasized by Aristotle. As a text to be read, the ending of t... The ending(Act V) of The Merchant of Venice makes this play a great comedy because it skillfully represents the unity of the organic whole which is highly emphasized by Aristotle. As a text to be read, the ending of this play has reached organic unity concerning plot structure. As a play to be performed, the ending is an organic whole when it comes to dramatic effects.The unity of comic spirit in the ending attributes to the everlasting beauty of this play. 展开更多
关键词 organic unity the Merchant of Venice ENDING COMEDY
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The Application of Visual Organization Principle in the Detection of Sleep Spindles
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作者 Xuemei Jin Junzhong Zou Jian Zhang 《Journal of Biomedical Science and Engineering》 2017年第5期1-9,共9页
In order to detect the sleep spindles simply and efficiently, a novel time-domain approach to detect sleep spindles based on the principles of visual organization is proposed. The code idea of the visual organization ... In order to detect the sleep spindles simply and efficiently, a novel time-domain approach to detect sleep spindles based on the principles of visual organization is proposed. The code idea of the visual organization is to organize the primary visual elements according to some rules of organization, and to form a more meaningful object of visual processing, as the input of next process. After the collected EEG is processed with the merging algorithm based on the principle of visual organization, it can extract the time-domain feature frequency and duration time better. Use these features with a simple algorithm to detect spindles achieving sensitivity of 92.5% and specificity of 98.1%, which verifies the validity of this method to detect the sleep spindles. 展开更多
关键词 SLEEP SPINDLES principle of VISUAL ORGANIZATION Time-Domain DETECTION
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Investigation over the recirculation influence on the combustion of micro organic dust particles
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作者 M. BIDABADI A. FANAEE A. RAHBARI 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第6期685-696,共12页
This paper investigates the role of recircnlation and non-unity Lewis number on the combustion of organic dust particles. Since recirculation effect is more noticeable in micro-combustors, it is necessary to propose a... This paper investigates the role of recircnlation and non-unity Lewis number on the combustion of organic dust particles. Since recirculation effect is more noticeable in micro-combustors, it is necessary to propose a modeling approach of this phenomenon to better simulate the performance of micro-combustors. In this research, in order to model the combustion of organic dust particles, it is assumed that the dust particles va- porize first to yield a known chemical structure which is oxidized in the gas phase, and the chemical structure of this gaseous fuel is assumed methane. To study the flame structure and solve the governing equations, it is considered that the flame structure consists of three zones titled the preheat-vaporization zone, the narrow reaction zone and finally the post flame zone. The recirculation phenomenon is evaluated by entering the exhausted heat from the post flame zone into the preheat zone. The solution is based on the follow- ing approach. First, the governing equations in each zone are nondimensionalized. Then the needed boundary and matching conditions are applied in each zone. After that, these equations and the required boundary and matching conditions are simultaneously solved with the analytical model. Consequently, the remarkable effects of recirculation and non- unity Lewis number on the combustion characteristics of the organic dust particles such as burning velocity and temperature profiles for different particle radii are obtained. The results show reasonable agreement with published experimental data. 展开更多
关键词 recirculation non-unity Lewis number organic dust particles flame temperature burning velocity
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An Efficient Grid Service Discovery Mechanism Based on the Locality Principle 被引量:2
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作者 KOU Yue YU Ge SHEN De-rong NIE Tie-zheng LIU Jian CAO Yu 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第1期83-87,共5页
With the explosion of services in grid environment, it's necessary to develop a mechanism which has the ability of discovering suitable grid services efficiently. This paper attempts to establish a layered resource m... With the explosion of services in grid environment, it's necessary to develop a mechanism which has the ability of discovering suitable grid services efficiently. This paper attempts to establish a layered resource management model based on the locality principle which classifies services into different domains and virtual organizations (VOs) according to their shared purposes. We propose an ontologybased search method applying the ontology theory for characterizing semantic information. In addition, we extend the UD- D1 in querying, storing, and so on. Simulation experiments have shown that our mechanism achieves higher performance in precision, recall and query response time. 展开更多
关键词 grid service discovery locality principle virtual organization ontology semantic information UDDI(universal description discovery and integration)
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The Augmented Reality Application of Multimedia Technology in Aquatic Organisms Instruction 被引量:6
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作者 Chih-Hsiao Tsai Jung-Chuan Yen 《Journal of Software Engineering and Applications》 2014年第9期745-755,共11页
The paper elaborates the features and superiority of applying multimedia technology to aquatic organisms in a Science and Life Technology course. The augmented reality application of multimedia technology in aquatic o... The paper elaborates the features and superiority of applying multimedia technology to aquatic organisms in a Science and Life Technology course. The augmented reality application of multimedia technology in aquatic organisms’ instruction has its own features, teaching information capacity, interactive user interface. The paper concludes the superiority of Unity and Vuforia AR instruction from five perspectives;meanwhile, the paper elaborates its disadvantages. An AR-based instruction attitude questionnaire was conducted at the end of the experiment to obtain learners’ perspectives of the system. Learners in AR approach demonstrate higher motivation and concentrate their attention on the learning tasks. Learners showed more positive attitude in willingness to use the AR-based instruction to improve learning interests. This study provided insights for better understanding the design, theory and practice of e-learning through augmented reality technology. 展开更多
关键词 Unity and Vuforia AR Multimedia Technology AUGMENTED REALITY AQUATIC ORGANISMS Attitude QUESTIONNAIRE
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气态碘在COF-103上吸附的理论研究 被引量:1
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作者 童大银 赵耀林 +4 位作者 王禹齐 韩子彤 王杰 张俊 喻晨曦 《高等学校化学学报》 SCIE EI CSCD 北大核心 2024年第1期84-93,共10页
采用第一性原理和巨正则蒙特卡罗方法,模拟研究了气态碘分子(I2)在共价有机框架材料(COF-103)中的吸附行为,并讨论了气态氧化物、氯化物和挥发性有机化合物(VOCs)等杂质气体的竞争吸附影响.结果表明,I2偏向以垂直方式吸附于COF-103苯环... 采用第一性原理和巨正则蒙特卡罗方法,模拟研究了气态碘分子(I2)在共价有机框架材料(COF-103)中的吸附行为,并讨论了气态氧化物、氯化物和挥发性有机化合物(VOCs)等杂质气体的竞争吸附影响.结果表明,I2偏向以垂直方式吸附于COF-103苯环的碳原子位,其中,长程色散相互作用具有重要的贡献,色散能在吸附能中的占比最多可达46%.I2与COF-103之间存在少量电荷转移,且可能形成具有弱共价相互作用的次级键.杂质气体中苯分子(C6H6)的吸附能和等量吸附热最大,与COF-103的亲和性最强,并且可以占据I2的吸附位点,从而引起I2吸附量的显著降低. 展开更多
关键词 气态碘吸附 共价有机框架 第一性原理 巨正则蒙特卡罗
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A review of science–policy interface for water governance in the Caspian Sea
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作者 Apoorva BAMAL Sogol MORADIAN +1 位作者 Ali TORABI-HAGHIGHI Agnieszka INDIANA-OLBERT 《Journal of Arid Land》 SCIE CSCD 2023年第10期1143-1159,共17页
Science and policy have been interlinked for decades and perform essential nexus conditions in the governing aspects of environmental scenarios.This review paper examines the present challenges in the science–policy ... Science and policy have been interlinked for decades and perform essential nexus conditions in the governing aspects of environmental scenarios.This review paper examines the present challenges in the science–policy interface in terms of water governance in the Caspian Sea and identifies effective conditions that may be used in the current context to enhance the mechanism.The evaluation of the science–policy link in the water policy of the Caspian Sea reveals a gap between knowledge producer and governance system,impeding the translation of scientific information into action.Complicated and context-dependent solutions make it challenging to establish effective science–policy processes in the Caspian Sea water governance settings.Establishing a common governing authority,implementing water and resource management regulations,and protecting the natural environment through legal frameworks are crucial steps to address these concerns and ensure sustainable development.Collaboration among coastal states is essential in environmental,economic,and social aspects of regional development.However,the lack of a comprehensive approach,coherent activities,and effective utilization of national and regional power has hindered efforts to halt the environmental degradation of the Caspian Sea.Local governments need to recognize their responsibility to protect and utilize the Caspian Sea for present and future generations,considering both environmental and human security.The interlinkage of the Caspian Sea water governance with the Organization for Economic Co-operation and Development(OECD)water governance principles offers a framework for policymakers to assess gaps and make necessary amendments to existing mechanisms.Effective science–policy interaction,engagement of diverse stakeholders,institutionalizing agreements,and addressing collective action issues are critical for successful water governance. 展开更多
关键词 resource management Organization for Economic Co-operation and Development water security water governance principle Caspian Sea
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Mo_(3)(C_(6)X_(6))_(2)(X=NH,S,O)monolayers:two-dimensional conductive metal-organic frameworks as effective electrocatalysts for the nitrogen reduction reaction
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作者 Juan Zhang Xinyue Zhu +6 位作者 Weixiang Geng Tianchun Li Manman Li Chubo Fang Xiaocao Shan Yafei Li Yu Jing 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第10期71-76,I0003,共7页
As a constituent element of amino acids,nitrogen plays an important role in nourishing plants,animals and other forms of life.Although the atmosphere is rich in nitrogen gas(N_(2)),the highly inert N≡N bond makes it ... As a constituent element of amino acids,nitrogen plays an important role in nourishing plants,animals and other forms of life.Although the atmosphere is rich in nitrogen gas(N_(2)),the highly inert N≡N bond makes it difficult for most organisms to directly utilize N_(2).The supply of nitrogen in the biological chain mainly depends on the slow conversion of N_(2) to ammonia(NH3)by biological nitrogen fixation[1]. 展开更多
关键词 Nitrogen reduction reaction ELECTROCATALYSIS Two-dimensional metal–organic frameworks First principles calculations
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Stability and optoelectronic property of low-dimensional organic tin bromide perovskites
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作者 J H Lei Q Tang +1 位作者 J He M Q Cai 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第3期483-487,共5页
The toxicity and degradation of hybrid lead-halide perovskites hinder their extensive applications.It is thus of great importance to explore non-toxic alternative materials with excellent stability and optoelectronic ... The toxicity and degradation of hybrid lead-halide perovskites hinder their extensive applications.It is thus of great importance to explore non-toxic alternative materials with excellent stability and optoelectronic property.We investigate the atomic structures and optoelectronic properties of non-toxic organic tin bromide perovskites(OTBP)with one/zerodimensional(1D/0D)structures by first-principles calculations.The calculated atomic structures show that the 1D/0D OTBPs are stable and the structure of inorganic octahedra in 0D is higher order than that in 1D.Moreover,the origination of exceptional purity emitting light in experiments is explained based on the calculated electronic structure. 展开更多
关键词 one/zero dimensional non-toxic organic tin bromide perovskites first principle calculation STABILITY Optoelectronic property
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Tuning of the periodicity of stable self-organized metallic templates
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作者 王晓春 赵寒月 +1 位作者 陈难先 张勇 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第2期177-184,共8页
The atomic and electronic structures of Pb bilayer/Pt(111) are investigated with two theoretical calculations. We find that the stable (2 × 2)/(3 × 3) Pb/Pt(lll) structure is a promising candidate fo... The atomic and electronic structures of Pb bilayer/Pt(111) are investigated with two theoretical calculations. We find that the stable (2 × 2)/(3 × 3) Pb/Pt(lll) structure is a promising candidate for being used as a template with self-organized ordered Pb semi-cluster array on the first Pb monolayer. This stable structure can realize the ordered Au single-atom array around the Pb semi-clusters that can cause selective adsorption of noble atoms. The size of Pb magic number semi-cluster plays a more important role in determining the periodicity of the template than the lattice constant misfit between the substrate and the overlayer. This leads to quite a different periodicity between the two stable templates, which are (2 × 2)/(3 × 3) Pb/Pt(111) and Pb/Cu(111). Therefore, by considering the size of the stable semi-clusters and carefully selecting different substrate materials, we can tune the density of Pb semi-clusters as the nucleation points and then tune the periodicity of the stable template. 展开更多
关键词 SELF-ORGANIZING TEMPLATE Chen-MSbius inversion method first-principles calculation
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论“心即理”视域下翻译学天人合一的意义观
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作者 杨镇源 《外语学刊》 北大核心 2025年第1期86-91,共6页
西方翻译学呈现出两种基本意义观:一是在柏拉图主义的笼罩下,将形而上的绝对意义视作完美而不可触及的彼岸,将形而下的相对阐释视作现实却又充满缺憾的此岸,并认为后者只能是对前者的拙劣模仿;二是在解构主义的影响下,将绝对意义和相对... 西方翻译学呈现出两种基本意义观:一是在柏拉图主义的笼罩下,将形而上的绝对意义视作完美而不可触及的彼岸,将形而下的相对阐释视作现实却又充满缺憾的此岸,并认为后者只能是对前者的拙劣模仿;二是在解构主义的影响下,将绝对意义和相对阐释同归于虚无。前者以“尊天抑人”的态势陷入天人二分的意义观,在一定程度压抑人本主义精神,后者以“毁天灭人”的态势陷入天人两空的意义观,因而引发虚无主义困境。在新儒家心学思想的“心即理”视域下,翻译学能够走出上述两种思维定势,促使译者立足本心,打通道枢,实现绝对意义和相对阐释的圆融统一,以“顺天应人”的态势成就天人合一的意义观。较之西方翻译学的两种意义观,它不仅凸显译者心性的关键作用,强化人本主义精神,还将本心作为意义的稳固立足点,避免虚无主义困境。这体现出心学思想对于翻译学意义观建构的独特价值,也为中国传统哲学思想在当代翻译学的应用提供了一个值得关注的学术增长点。 展开更多
关键词 翻译学 意义观 心即理 本心 天人合一
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一种基于PCA/SOFM混合神经网络的图象压缩算法 被引量:10
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作者 许锋 方弢 +1 位作者 卢建刚 孙优贤 《中国图象图形学报(A辑)》 CSCD 北大核心 2003年第9期1100-1104,共5页
鉴于用神经网络实现图象压缩是一种非常有效的方法,为此提出了一种基于PCA/SOFM混合神经网络的图象压缩编码算法,并对SOFM网络学习参数的优化进行了探讨.实验证明,与PCA+SOFM连续编码算法和基本SOFM算法相比,这种混合编码算法,由于占用... 鉴于用神经网络实现图象压缩是一种非常有效的方法,为此提出了一种基于PCA/SOFM混合神经网络的图象压缩编码算法,并对SOFM网络学习参数的优化进行了探讨.实验证明,与PCA+SOFM连续编码算法和基本SOFM算法相比,这种混合编码算法,由于占用存储空间少,因而降低了码书设计的计算量,并改善了码书的性能. 展开更多
关键词 神经网络 图象压缩 图象编码 图象质量
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“五脏一体观”视域下构建肺结节中医辨证体系
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作者 宋玮 刘丽耘 +1 位作者 张钟艺 沈涛 《云南中医中药杂志》 2025年第1期14-18,共5页
基于“五脏一体观”理论全新构建了肺结节的中医辨证体系。肺结节病位在肺,根结于五脏,以五脏津气滞涩、痰瘀内生、痹阻于肺为核心病机。其中五脏津气布散失司为病理基础,水湿生痰、留滞于肺为中间环节,痰凝成瘀、胶结为块为肺结节发病... 基于“五脏一体观”理论全新构建了肺结节的中医辨证体系。肺结节病位在肺,根结于五脏,以五脏津气滞涩、痰瘀内生、痹阻于肺为核心病机。其中五脏津气布散失司为病理基础,水湿生痰、留滞于肺为中间环节,痰凝成瘀、胶结为块为肺结节发病的症结关键。治疗上以“通调五脏”为基本原则,既畅达津气运行之路,截断痰瘀产生之源,又清除体内之已有痰浊、瘀血等病理产物,使肺结节逐渐消散。临证谨守病机,分型治疗,可获良效。痰饮壅肺证,治以涤痰化饮、宣肺调中,方以清金化痰散结汤或二陈平胃散结汤;肝郁痰湿证,治以疏肝健脾、行气化浊,方以逍遥化痰汤;脾虚痰结证,治以升阳健脾、消痰化浊,方以升阳化湿散结汤;心阳痹阻证,治以温通心阳、化瘀安神,方以通阳化瘀散结汤;肾阳虚痹证,治以温肾固本、通络散结,方以保元通络散结汤。 展开更多
关键词 肺结节 肺积 五脏一体观 辨治体系
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高职院校专业群治理的模式探索与路径创新——基于涂尔干的有机团结理论
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作者 蓝丹 《宁波职业技术学院学报》 2025年第1期89-95,共7页
专业群治理模式的探索,是实现共建共治、建设专业群治理共同体的必经之路。社会学家涂尔干的有机团结理论为高职专业群治理模式探索提供新的视角。通过分析“机械团结”和“有机团结”的内涵,探讨有机团结与高职专业群治理的契合性,对... 专业群治理模式的探索,是实现共建共治、建设专业群治理共同体的必经之路。社会学家涂尔干的有机团结理论为高职专业群治理模式探索提供新的视角。通过分析“机械团结”和“有机团结”的内涵,探讨有机团结与高职专业群治理的契合性,对比有机团结与机械团结的治理意识、组织结构与社会规范等三个要素,结合高职专业群治理现状,认为目前高职专业群治理属于“机械团结型”治理,需要重塑治理价值、完善专业群组织管理机制、平衡刚性治理与柔性治理,最终走向“有机团结型”高职专业群治理模式。 展开更多
关键词 专业群治理 有机团结理论 治理模式
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m-DABDT金属有机骨架电子性质和应变调控效应的第一性原理研究
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作者 刘金宝 结文·乃比 +1 位作者 崔恩豪 姚晓龙 《原子与分子物理学报》 CAS 北大核心 2025年第2期124-134,共11页
金属有机骨架材料具有低密度,高孔隙率和充分暴露的活性位点等结构特点,在光电探测、分子识别和分离以及催化等等领域具有良好的应用前景.合理地选择金属中心是新型金属有机骨架材料设计及性能调控的有效策略.本文利用基于密度泛函理论... 金属有机骨架材料具有低密度,高孔隙率和充分暴露的活性位点等结构特点,在光电探测、分子识别和分离以及催化等等领域具有良好的应用前景.合理地选择金属中心是新型金属有机骨架材料设计及性能调控的有效策略.本文利用基于密度泛函理论的第一性原理计算方法,研究了五种不同金属中心的一维链状金属有机骨架m-2,5-二氨基-1,4-苯二硫醇(DABDT)(m=Fe,Co,Ni,Cu,Zn)的电子性质.计算结果表明:考虑自旋极化条件下的HSE06杂化泛函计算的带隙值与实验值最为符合;随着金属中心d轨道占据数增加,能带结构呈现直接-间接-直接带隙的转变过程;当金属中心为Ni和Zn时,应变可诱导m-DABDT发生直接-间接带隙转变且带隙呈单调变化,同时其电子迁移率均大于空穴迁移率;当金属中心为Fe时,外加应变下m-DABDT保持直接带隙且带隙呈非单调变化,同时其空穴迁移率大于电子迁移率.这些研究结果揭示了m-DABDT金属有机骨架电子性质的调控机制,为光电器件的设计提供理论指导. 展开更多
关键词 金属有机骨架 电子性质 应变调控 金属中心 第一性原理
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论农业适度规模经营视野下的承包地细碎化治理
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作者 高圣平 《武汉大学学报(哲学社会科学版)》 北大核心 2025年第1期160-171,共12页
发展农业适度规模经营是中国式农业农村现代化的必由之路,而承包地细碎化治理是发展农业适度规模经营中的关键一环。承包地细碎化治理模式中,“承包权不动,经营权连片”在法律上的技术路径是三权分置之下的土地经营权流转;“承包权互换... 发展农业适度规模经营是中国式农业农村现代化的必由之路,而承包地细碎化治理是发展农业适度规模经营中的关键一环。承包地细碎化治理模式中,“承包权不动,经营权连片”在法律上的技术路径是三权分置之下的土地经营权流转;“承包权互换,承包地连片”在法律上的技术路径是两权分离之下的土地承包经营权互换。农村集体经济组织在承包地细碎化治理中发挥着统筹协调、组织服务等功能,按照法定的程序形成集体意志,还可以充当承包农户在土地经营权外部流转时的代理人,以破除集体行动困境。承包地的调整仅限于个别农户之间,并在符合法定条件的前提之下按照法定程序进行,不得以承包地细碎化治理为由扩大承包地调整的适用范围而进行“打乱重分”。 展开更多
关键词 农业适度规模经营 承包地细碎化 农村集体经济组织 承包地调整 农地“三权分置” 土地承包经营权 党的二十届三中全会精神
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Achieving the Visual Perception and Gestalt Psychology in Sultan Hassan Mosque Building 被引量:3
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作者 Essam Metwally 《Open Journal of Applied Sciences》 2021年第1期21-40,共20页
The gestalt principles are perception and what is visually communicated by objects. These principles describe the visual language within which we work. Understanding how a designer realizes things visually will help d... The gestalt principles are perception and what is visually communicated by objects. These principles describe the visual language within which we work. Understanding how a designer realizes things visually will help designers communicate better. Many designers use Gestalt principles to have a structure visual stimulus, so as to create interfaces that are easy for users to understand. Because the understanding of visual perception is a critical item in any designer’s toolkit. Islamic heritage buildings also contain many architectural values, especially the Sultan Hassan Mosque in Cairo. Through this paper, we will verify the use of gestalt principles of visual perception in the building design. Because the psychological organization of the design, achieves the understanding and awareness of the current relationships between the elements, depending on the extent of regularity, accuracy, and consistency of the design elements. This makes us recognize the esthetic values of Sultan Hassan’s building and mosque. The visual delight we get from architecture begins with how we perceive it. So, in order to understand how visual delight arises, we must first understand how we perceive and interpret visual stimuli. Especially since the principles of gestalt confirm that the human brain tends to make tricks and illusions. Therefore, we found the mosque designer had exploited this fact during the design process, to exclude any possibility of the resulting misunderstanding. The designer achieved the psychological preparation of the visitor by using some principles of visual perception of the Gestalt theory, such as growth, continuity, and hierarchy. 展开更多
关键词 Gestalt principles Visual Perception Psychological Organization Esthetic Values Islamic Heritage Buildings
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基于PCA-SOFM模型的岩爆烈度等级预测 被引量:3
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作者 陈则黄 李克钢 +2 位作者 李明亮 秦庆词 毛明发 《地下空间与工程学报》 CSCD 北大核心 2022年第S02期934-942,951,共10页
岩爆受多种条件因素影响,需要岩爆预测指标体系的完整性。取弹性变形能指数W_(et)、应力系数σ_(θ)/σ_(c)、脆性系数σ_(c)/σ_(t)、单轴抗压强度σ_(c)、单轴抗拉σ_(t)和围岩切向应力σ_(θ)等指标构建岩爆倾向性预测指标体系。采... 岩爆受多种条件因素影响,需要岩爆预测指标体系的完整性。取弹性变形能指数W_(et)、应力系数σ_(θ)/σ_(c)、脆性系数σ_(c)/σ_(t)、单轴抗压强度σ_(c)、单轴抗拉σ_(t)和围岩切向应力σ_(θ)等指标构建岩爆倾向性预测指标体系。采用主成分分析(PCA)法对指标降维处理、提取指标数据主要信息,得到3个线性无关的主成分输入向量。将处理后的指标作为输入向量对3种不同自组织特征映射神经网络(SOFM)模型进行训练与测试,比较3个模型的方差和竞争层神经元聚类效果,得到输出层神经元个数为16的最优预测模型。最后引入12组国内外工程实例与多维正态云模型、模糊综合评价法、灰类白化权函数聚类法、Russense判据所预测的岩爆烈度等级进行比较,研究表明:基于PCA-SOFM岩爆烈度等级预测结果与工程实际情况吻合度高,可行性较好,为岩爆烈度等级预测提供一种新的研究方法。 展开更多
关键词 岩石力学 主成分分析法 自组织特征映射神经网络 岩爆烈度等级预测 欧氏距离
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Mechanical model of organ of Corti
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作者 Yiqiang CHEN Wenjuan YAO Shaofeng LIU 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2017年第6期867-876,共10页
According to the vibration characteristics of the organ of Corti (OC), seven hypotheses are made to simplify the structure of the model, and a mechanical OC model is established. Using the variational principle, a d... According to the vibration characteristics of the organ of Corti (OC), seven hypotheses are made to simplify the structure of the model, and a mechanical OC model is established. Using the variational principle, a displacement analytical expression is solved under a certain pressure. The results are in good agreement with experimental data, showing the validity of the formula. Combined with the damage caused by noise in clinic, it is found that the hardening of outer hair cells and outer stereocilia can lead to loss of hearing and generation of threshold shift. In addition, the results show that high frequency resonance occurs at the bottom of the basilar membrane (BM), and low frequency resonance occurs at the top of the BM. This confirms the frequency selective characteristics of the BM. Further, using this formula can avoid interference of the envi- ronment and the technical level of the test personnel, and can evaluate performance of the OC objectively. 展开更多
关键词 organ of Corti (OC) variational principle hardening of outer hair cells(OHCs) hardening of outer stereocilia threshold shift
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