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基于D-S证据理论改进AHP-熵权的流域洪涝灾害评估研究
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作者 苑希民 高瑞梅 +1 位作者 田福昌 侯玮 《水资源与水工程学报》 CSCD 北大核心 2024年第1期9-16,共8页
考虑致灾因子危险性、孕灾环境敏感性以及承灾体易损性,选取指标构建小清河流域洪涝灾害风险评估指标体系,提出一种基于D-S证据理论的改进AHP-熵权法计算指标权重,求取洪涝灾害风险指数,运用自然断点分级法确定洪涝灾害风险等级,分析小... 考虑致灾因子危险性、孕灾环境敏感性以及承灾体易损性,选取指标构建小清河流域洪涝灾害风险评估指标体系,提出一种基于D-S证据理论的改进AHP-熵权法计算指标权重,求取洪涝灾害风险指数,运用自然断点分级法确定洪涝灾害风险等级,分析小清河流域洪涝灾害风险空间分布情况。结果表明:小清河流域洪涝灾害风险总体上表现出南低北高的趋势,其中高风险区和较高风险区分别占流域面积的8.7%和14.3%,主要分布在小清河干流以及主要支流两岸。所得评估结果同“利奇马”台风发生期间实际洪灾风险分布情况一致,对比证明基于D-S证据理论的改进AHP-熵权法优于AHP和熵权法,可为小清河流域防洪减灾决策提供依据。 展开更多
关键词 D-s证据理论 AHP 熵权法 洪涝灾害评估 小清河流域
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水泵水轮机S特性区能量损失及流动特性研究
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作者 王李科 姚亮 +3 位作者 冯建军 朱国俊 卢金玲 阮辉 《水利学报》 EI CSCD 北大核心 2024年第3期344-354,366,共12页
为了调节电网的稳定性,抽水蓄能电站需要频繁启停和变换工况运行,导致水泵水轮机容易进入S特性区,机组振动增加,并网失败。本文以模型水泵水轮机为研究对象,采用熵产理论详细分析了S特性区不同工况下的能量损失规律,明确了熵产率分布与... 为了调节电网的稳定性,抽水蓄能电站需要频繁启停和变换工况运行,导致水泵水轮机容易进入S特性区,机组振动增加,并网失败。本文以模型水泵水轮机为研究对象,采用熵产理论详细分析了S特性区不同工况下的能量损失规律,明确了熵产率分布与内部流动结构的关系。结果表明:S特性区内近飞逸工况总熵产最大,约为设计工况的5.1倍,脉动熵产占据的比例接近80%,随着流量的减小,转轮熵产占比逐渐降低,活动导叶和尾水管的熵产占比增加。小流量工况转轮进口靠近下环位置首先出现了明显的漩涡,导致了活动导叶出口和转轮进口的高熵产区,随着流量进一步减小,漩涡逐渐向上冠转移,并且切向速度增大,在转轮进口形成挡水环,阻碍水流进入转轮,在无叶区内出现了环状分布的高熵产区。反水泵工况,水流在低压边与逆时针旋转的叶片撞击,导致水流很难进入叶片内部,形成了大尺度的回流涡结构;双列叶栅内充满大量涡结构,导致活动导叶吸力面的熵产率增大,并且向固定导叶传播。 展开更多
关键词 水泵水轮机 s特性 熵产理论 回流涡
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RAPD Markers and Genetic Information Entropy in Environmental Monitoring: A Case Study with Wild Mushrooms
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作者 Charoula Psallida Dimitrios Argyropoulos 《Journal of Geoscience and Environment Protection》 2023年第9期28-39,共12页
Mushrooms have a remarkable scientific value due to their nutritional, medicinal properties and industrial applications in enzyme production, so that effort in the maintenance of native wild mushroom varieties is incr... Mushrooms have a remarkable scientific value due to their nutritional, medicinal properties and industrial applications in enzyme production, so that effort in the maintenance of native wild mushroom varieties is increasing. The present study focuses on the use of Random Amplified Polymorphic DNA (RAPD) markers for biodiversity measure of wild mushroom species of the Northwest mountainous region of Greece. Data mining of similarity matrices from RAPD analysis was used to extract measurable entropy parameters for mushroom biodiversity monitoring based on Shannon’s information entropy. Shannon information index provides an easy assessment of the entropy of the genetic information of the germplasm per mushroom species while the total equitability index (E<sub>H</sub>) = 0.871 offers an overall estimation of the genetic variation evenness of all species in the population of the studied mushrooms. Application of RAPDs with parallel entropy analysis is an easily applicable and low-cost valuable technology in environmental monitoring, using genetic information of wild mushroom species as an indicator that can lead to future actions in biodiversity maintenance and germplasm protection. The provided methodology can serve as a pilot procedure enriched with other environmental factors to monitor and protect wild mushroom communities native to the Greek countryside or in any part of the world and provide comparable results about biodiversity from different regions using common entropy indices. 展开更多
关键词 Random Amplified Polymorphic DNA shannon’s Index entropy BIODIVERsITY DENDROGRAM
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基于FPGA的AES和ECC算法图像加密
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作者 方应李 方玉明 《电子科技》 2024年第6期92-97,共6页
随着数字图像的使用次数日益增多,保护机密图像数据免受未经授权的访问较为重要。针对数字图像在通信、存储和传输等领域存在的安全问题,文中基于对称算法模型和非对称算法模型的优点提出一种具有高安全性和高速度性的数字信封技术密码... 随着数字图像的使用次数日益增多,保护机密图像数据免受未经授权的访问较为重要。针对数字图像在通信、存储和传输等领域存在的安全问题,文中基于对称算法模型和非对称算法模型的优点提出一种具有高安全性和高速度性的数字信封技术密码方案。该方案以AES(Advanced Encryption Standard)和ECC(Elliptic Curve Cryptography)为基础,经优化后用于对称密钥共享的ECC硬件架构来提高密钥的安全性。通过加入伪随机数、使用列移位替代列混淆运算以及三维S-box等方式对传统AES进行优化,在保持香农扩散和混淆原理的同时降低了时间复杂性。基于FPGA(Field Programmable Gate Array)实现AES算法的数字图像加密仿真以及性能测试。测试结果表明,所提密码方案具有快速性、高安全性和有效性等优点,能够有效地实现图像加密。 展开更多
关键词 数字图像 数字信封 AEs算法 ECC算法 三维s-box FPGA 信息熵 相关系数
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基于最大信息系数法和邓熵的D-S证据理论改进
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作者 王刚 徐维磊 田裕鹏 《计算机应用文摘》 2024年第4期114-118,123,共6页
物联网中大量传感器采集的数据存在不确定性,针对D-S证据理论在处理冲突证据时融合决策结果与事实相悖的问题,文章提出一种新的基于改进D-S证据理论的多传感器数据融合算法,首先使用最大信息系数法计算证据间的可信度;然后结合信息熵对... 物联网中大量传感器采集的数据存在不确定性,针对D-S证据理论在处理冲突证据时融合决策结果与事实相悖的问题,文章提出一种新的基于改进D-S证据理论的多传感器数据融合算法,首先使用最大信息系数法计算证据间的可信度;然后结合信息熵对证据的不确定度进行分析,以确定新的权重;最后使用Dempster组合规则得到融合结果。算例分析表明,文章所提方法能有效融合冲突证据,较经典算法有较高的基本概率分配。将所提方法用于传感器数据处理,不仅能降低数据中存在的不确定性,还能有效处理D-S理论中的冲突问题,从而得到较为准确的融合结果。 展开更多
关键词 D-s证据理论 最大信息系数 邓熵 数据融合
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基于改进D-S证据理论的相控阵雷达作战效能评估
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作者 郑丽莎 尹东亮 王旋 《系统工程与电子技术》 EI CSCD 北大核心 2024年第4期1330-1336,共7页
针对相控阵雷达作战效能评估中战场环境等不确定因素的影响,采用改进Dempster-Shafer(D-S)证据理论对其进行作战效能评估方法的优化。首先,通过构建相控阵雷达作战效能评估指标体系,明确评估指标并赋值权。其次,引入Kulsinski差异和模... 针对相控阵雷达作战效能评估中战场环境等不确定因素的影响,采用改进Dempster-Shafer(D-S)证据理论对其进行作战效能评估方法的优化。首先,通过构建相控阵雷达作战效能评估指标体系,明确评估指标并赋值权。其次,引入Kulsinski差异和模糊熵方法,对传统的D-S证据理论进行改进,减少指标在融合过程中的融合权重不确定性的影响。最后,通过改进D-S证据理论对评估指标进行数据融合,建立评估准确性较高的相控阵雷达作战效能评估模型。通过算例验证分析,所提方法能够有效减少融合过程中的不确定性影响,可实现相控阵雷达作战效能评估的目的,提高作战效能评估精度。 展开更多
关键词 相控阵雷达 Dempster-shafer(D-s)证据理论 作战效能评估 Kulsinski差异 模糊熵
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The “Dead Universe” Theory: Natural Separation of Galaxies Driven by the Remnants of a Supermassive Dead Universe
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作者 Joel Almeida 《Natural Science》 2024年第6期65-101,共37页
This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This per... This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This perspective challenges the conventional Big Bang theory, particularly concerning dark matter, the expansion of the universe, and the interpretation of phenomena such as gravitational waves. 展开更多
关键词 Dead Universe Theory Heat Death of the Universe Big Bang Theory Universe’s Ultimate Fate Universe Expansion Big Freeze Universe Cosmological Models End of Universe Theories Natural Galaxy Drift Future of the Universe Universe Cooling Down Cosmology and entropy
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基于云D-S证据理论的极端天气下电力系统应急能力评判
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作者 王建楠 李元良 +5 位作者 温晓寒 赖元威 卢军严 郑宇琦 何青 郭梽炜 《气象研究与应用》 2024年第1期42-48,共7页
以提高应对极端天气下电力系统突发事件能力为目标,将电力系统应急能力作为研究对象,提出基于云模型和证据理论融合的评估算法。采用层次分析法和熵值法相结合的方法确定应急指标权重,运用云模型做为基础对电力系统应急能力进行评估,以... 以提高应对极端天气下电力系统突发事件能力为目标,将电力系统应急能力作为研究对象,提出基于云模型和证据理论融合的评估算法。采用层次分析法和熵值法相结合的方法确定应急指标权重,运用云模型做为基础对电力系统应急能力进行评估,以解决评价指标模糊性和随机性的问题,并引入D-S证据理论对指标进行综合评估,构建极端天气下电力系统的应急能力评估模型。通过案例证明,该方法可以有效准确地定量和定性评估电力网系统的应急能力,为提高电力网系统的应急管理能力提供科学依据。 展开更多
关键词 云模型 D-s证据理论 层次分析法 熵值法 电力系统应急能力
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基于熵权TOPSIS法的知识产权保护政策评价研究 被引量:6
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作者 马海群 李敏 《数字图书馆论坛》 CSSCI 2023年第8期60-67,共8页
通过对知识产权保护政策文本进行评价,可把握政策评价指标的重要性,为后续政策制定与调整提供重要的理论准备与决策支持。引入S-CAD政策分析法中的基本要素概念,从政策制定者、政策内容、政策参与者和政策价值4个维度建立知识产权保护... 通过对知识产权保护政策文本进行评价,可把握政策评价指标的重要性,为后续政策制定与调整提供重要的理论准备与决策支持。引入S-CAD政策分析法中的基本要素概念,从政策制定者、政策内容、政策参与者和政策价值4个维度建立知识产权保护政策评价分析框架,在此基础上构建知识产权保护政策评价指标体系,并运用熵权TOPSIS法对9项知识产权保护政策进行评价。结果显示,9项政策制定规范,政策重点突出,具有较高的社会及经济价值;但在部门协同、政策目标、政策措施及作用范围方面仍存在改善空间。针对以上问题,应加强政策制定过程中的部门协同,强化政策目标的相互融合,健全财政支持及人才激励制度,提升作用对象的多元性。 展开更多
关键词 知识产权 知识产权保护 政策评价 熵权 TOPsIs s-CAD法
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广义S变换和阈值分割联合抗频谱扩展-压缩移频干扰
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作者 李欣 罗富友 袁天 《国防科技大学学报》 EI CAS CSCD 北大核心 2023年第1期49-56,共8页
根据频谱扩展-压缩(spectrum spread and compression,SSC)移频干扰信号和回波信号时频分布特性的差异,提出一种基于广义S变换和Tsallis交叉熵阈值分割的干扰抑制方法。分析了SSC移频干扰的干扰原理和干扰信号经过解线调后的信号形式,... 根据频谱扩展-压缩(spectrum spread and compression,SSC)移频干扰信号和回波信号时频分布特性的差异,提出一种基于广义S变换和Tsallis交叉熵阈值分割的干扰抑制方法。分析了SSC移频干扰的干扰原理和干扰信号经过解线调后的信号形式,并利用时频聚焦性较好的广义S变换获取接收信号经过解线调后的时频图像,根据时频图像对应的灰度图像,以Tsallis交叉熵最小化作为目标函数,求出灰度图像的最佳分割阈值,并根据分割阈值构建时频滤波器,实现干扰抑制。仿真结果表明:该方法对于SSC移频干扰产生的假目标具有较好的抑制效果,干扰抑制比可达30 dB以上。 展开更多
关键词 频谱扩展-压缩移频干扰 广义s变换 阈值分割 Tsallis交叉熵
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基于熵产理论的水泵水轮机反S区水力损失机理分析 被引量:6
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作者 阚阚 杨皓程 +2 位作者 郑源 段慧玲 陈会向 《水利学报》 EI CSCD 北大核心 2023年第3期323-332,共10页
水泵水轮机在水轮机工况运行时易进入反S不稳定区,影响机组的安全稳定运行。传统压差法在计算水力损失时不能获得损失的具体分布和详细来源,因此水泵水轮机在反S区水力损失机理仍有待深入研究。本文采用雷诺时均方法对某原型抽蓄电站水... 水泵水轮机在水轮机工况运行时易进入反S不稳定区,影响机组的安全稳定运行。传统压差法在计算水力损失时不能获得损失的具体分布和详细来源,因此水泵水轮机在反S区水力损失机理仍有待深入研究。本文采用雷诺时均方法对某原型抽蓄电站水泵水轮机在活动导叶开度分别为12°和35°下的反S区运行工况进行了数值模拟,基于熵产理论对各个过流部件和不同类型的水力损失进行了定量分析,并结合流场分布情况进一步明确了水力损失的分布特点和产生原因。结果表明,水泵水轮机进入反S区会引起导叶段水力损失占总水力损失的比例逐渐增大,而转轮段水力损失逐渐减小。在不同类型的能量损失中,湍流熵产占据主导,壁面熵产次之,直接熵产最小。随着水泵水轮机进入深度反S区,转轮区湍流熵产损失较大区域从转轮进口的叶片压力面转移到转轮出口叶片吸力面。水泵水轮机位于反S区时,转轮对水流做功输入能量,使无叶区总压大幅上升,活动导叶开度增大会显著增大无叶区水流能量幅值。 展开更多
关键词 水泵水轮机 数值模拟 熵产理论 s 水力损失
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Performance Evaluation of Public Bus Transportation by Using DEA Models and Shannon’s Entropy:An Example From a Company in a Large City of China 被引量:7
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作者 Zicheng Liu Naiqi Wu +1 位作者 Yan Qiao Zhiwu Li 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2021年第4期779-795,共17页
The purpose of this paper is to assess the operational efficiency of a public bus transportation via a case study from a company in a large city of China by using data envelopment analysis(DEA)model and Shannon’s ent... The purpose of this paper is to assess the operational efficiency of a public bus transportation via a case study from a company in a large city of China by using data envelopment analysis(DEA)model and Shannon’s entropy.This company operates 37 main routes on the backbone roads.Thus,it plays a significant role in public transportation in the city.According to bus industry norms,an efficiency evaluation index system is constructed from the perspective of both company operations and passenger demands.For passenger satisfaction,passenger waiting time and passenger-crowding degree are considered,and they are undesirable indicators.To describe such indicators,a superefficient DEA model is constructed.With this model,by using actual data,efficiency is evaluated for each bus route.Results show that the DEA model with Shannon’s entropy being combined achieves more reasonable results.Also,sensitivity analysis is presented.Therefore,the results are meaningful for the company to improve its operations and management. 展开更多
关键词 Performance evaluation public transportation system shannon’s entropy super-efficiency data envelopment analysis undesirable outputs
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震前重力扰动与背景噪声时空变化特征——以玛多M_(S)7.4与漾濞M_(S)6.4地震为例 被引量:2
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作者 苟家宁 刘子维 +1 位作者 江颖 张晓彤 《地震地质》 EI CSCD 北大核心 2023年第1期252-268,共17页
2021年5月21—22日,云南漾濞、青海玛多先后发生了M_(S)6.4和M_(S)7.4地震。为检测震前是否存在重力扰动与重力仪背景噪声异常信号,文中基于中国连续重力台网中15台重力仪的秒采样数据,成功提取了震前重力扰动信号,并计算了排列熵(PE)... 2021年5月21—22日,云南漾濞、青海玛多先后发生了M_(S)6.4和M_(S)7.4地震。为检测震前是否存在重力扰动与重力仪背景噪声异常信号,文中基于中国连续重力台网中15台重力仪的秒采样数据,成功提取了震前重力扰动信号,并计算了排列熵(PE)及重力仪在地震频段(200~600s)的背景噪声等级(SNM)。结果表明:1)大地震发生前多数台站在2021年5月15—18日存在1组重力扰动信号,其中沿海台站同时还存在其他2组扰动信号,扰动幅度为±(10~100)μGal,扰动频率集中在0.15~0.25Hz。沿海台站的扰动幅度普遍大于内陆台站,震中距与扰动幅度无明显相关性,沿海台站扰动幅度较大及产生其他2组扰动的原因可能与海浪脉动或局部降雨有关;2)不需要对原始重力序列作任何预处理,PE能够快速检测到数据中的突变信号,PE时间序列中持续显著下降的信号对应震前扰动信号,PE瞬时向下的脉冲信号对应地震波引起的颤动信号;3)多个台站的SNM时变曲线显示,震前2个月(2021年3月初)直至主震发生时背景噪声水平显著升高,SNM的空间分布表明,震前1~2个月,位于青藏高原北缘、巴颜喀拉地块附近台站的背景噪声有明显增大的趋势,震后噪声水平显著降低。综上,我们初步推测:震前的重力扰动可能是由发震断裂慢滑移产生的低频颤动信号,震前背景噪声的增大可能与发震地块的活动性增强有关。 展开更多
关键词 漾濞M_(s)6.4地震 玛多M_(s)7.4地震 重力扰动 地震背景噪声 排列熵
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基于EWGR-DSTE的巷道围岩质量分级可信度研究 被引量:3
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作者 单梁 刘艳章 +3 位作者 孙明伟 葛伟杰 肖一鸣 于佳兴 《金属矿山》 CAS 北大核心 2023年第10期53-59,共7页
传统岩体质量分级方法中分级因素的各等级评分具有阶梯性,并且各因素评分值仅通过简单的数学运算得到岩体质量综合等级,由此可能会引起围岩质量评分结果位于等级边界造成评级模糊的问题,导致分级结果的准确性降低。为此,以RMR法固有分... 传统岩体质量分级方法中分级因素的各等级评分具有阶梯性,并且各因素评分值仅通过简单的数学运算得到岩体质量综合等级,由此可能会引起围岩质量评分结果位于等级边界造成评级模糊的问题,导致分级结果的准确性降低。为此,以RMR法固有分级因素为基础,综合考虑定性与定量因素对岩体质量分级的影响,通过D-S证据理论对熵权灰色关联法确定分级因素的基本概率赋值函数进行融合,建立了基于EWGR(熵权灰色关联)与DSTE(DS证据理论)的巷道围岩质量分级可信度模型。以金山店铁矿东区-410 m水平采场巷道围岩为研究对象,选取4个典型测点,运用建立的可信度模型计算RMR法围岩质量分级结果的可信度。结果表明:建立的可信度模型有效地确定了测点围岩质量等级的可信度并根据可信度大小准确判定围岩等级;有效解决巷道围岩评分结果位于边界的等级模糊性问题;可信度模型计算的巷道围岩质量分级结果与现场围岩的支护措施相符,运用此模型得到了更符合工程实际的分级结果。 展开更多
关键词 RMR法 D-s证据理论 可信度 灰色关联理论 熵值法
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The Topological Entropy Mechanism of Coronavirus Disease 2019 (COVID-19) 被引量:1
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作者 Ruomeng Xu Ludan Lei +2 位作者 Ruihua Qin Zhende Huang Kuo-Chen Chou 《Natural Science》 2020年第12期737-742,共6页
The biological </span><span style="font-family:Verdana;font-size:12px;">principal</span><span style="font-family:Verdana;font-size:12px;"> or its detailed mechanism for the ... The biological </span><span style="font-family:Verdana;font-size:12px;">principal</span><span style="font-family:Verdana;font-size:12px;"> or its detailed mechanism for the pandemic coronavirus disease 2019 (COVID-19) has been investigated and analyzed from the topological entropy approach. The findings thus obtained have provided very useful clues and information for developing both powerful and safe vaccines against the pandemic COVID-19. 展开更多
关键词 VACCINE Cellular CORONAVIRUs Pandemic COVID-19 spatial and Time entropy Topological entropy Chou’s 5-steps Rule
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Shear viscosity to entropy density ratio in BUU transport model 被引量:1
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作者 LI Shaoxin FANG Deqing +1 位作者 MA Yugang ZHOU Chenglong 《Nuclear Science and Techniques》 SCIE CAS CSCD 2011年第4期235-239,共5页
Shear viscosity (η) is a basic transport coefficient of the medium.In this work,we calculate shear viscosity to entropy density ratio (η/S) of an equilibrated system in intermediate energy heavy ion collisions withi... Shear viscosity (η) is a basic transport coefficient of the medium.In this work,we calculate shear viscosity to entropy density ratio (η/S) of an equilibrated system in intermediate energy heavy ion collisions within the framework of the Boltzmann-Uehling-Uhlenbeck model (BUU) model.After the equilibration of Au + Au system at central collision in a fixed volume is reached,temperature,pressure and energy density are extracted by the phase space information and then η/S is calculated using the Green-Kubo formulas.The results show that η/S drops with the incident energy and its value is not so drastically different from the RHIC results. 展开更多
关键词 剪切粘度 运输模型 密度比 BOLTZMANN 中能重离子碰撞 平衡系统 运输系数
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Entropy Analysis of Vapor-Compression Refrigeration System by Using the Second Law of Thermodynamics
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作者 杨洪海 《Journal of China Textile University(English Edition)》 EI CAS 1999年第4期42-44,共3页
By means of the Second Law of Thermodynamics,thispaper gives out the entropy analysis method for vapor-comperession refrigeration system.The thermal irrevers-ibility of the system charged with R12 and its hopeful al-t... By means of the Second Law of Thermodynamics,thispaper gives out the entropy analysis method for vapor-comperession refrigeration system.The thermal irrevers-ibility of the system charged with R12 and its hopeful al-ternative refrlgerant R134a have been studied respective-ly.On the basis of all the research results of this paper,the measure used to save energy for vapor-compressionrefrigeration system has been put out. 展开更多
关键词 Vapor - Compression REFRIGERATION system sec-ond Law of THERMODYNAMICs entropy ANALYsIs Alternative REFRIGERANT of CFC’s
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Robot’s Emotion Decision by Energy and Entropy Concepts
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作者 Won-hyong LEE Myung-jin CHUNG 《Journal of Measurement Science and Instrumentation》 CAS 2010年第4期368-371,共4页
This study is to introduce concepts of energy and entropy to describe a robot's emoton decisien. It chooses the dimensional approach based on factors of pleasure and arousal for the merit of the interpolation between... This study is to introduce concepts of energy and entropy to describe a robot's emoton decisien. It chooses the dimensional approach based on factors of pleasure and arousal for the merit of the interpolation between enotions. Especially, Circumplex model which has also two axes: pleasure and arousal is used. Besides, the model indicates how emotions are distributed in the two-dimensional plane. Then by the definition of psychodynamicsthe energy states (mental energy and physical energy) are matched to pleasure and arousal respectively that are the basis of Circumplex model. The mental energy is updated by the result of Prospect theory which measures the value of gain and loss as pleasure factor. And the physical energy is updated by the result of hedonic scaling which measures levels of arousal from pleasure computed by Prospect theory, and the result of intensity of stimuli. Then the energy states are fed by entropy. The feedback loop by entropy satisfies the 2nd law of thermodynamics. The energy states generated by stimuli and fed by entropy take a position in the plane of Circumplex model. Then distances between the current position and other emotions are cornputed to get a level of each emotion, proportional to the inverse of the distance. 展开更多
关键词 robot's emotion emotion generation emotion decision energy and entropy
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An Entropy Approach to Tesla’s Discovery of Wireless Power Transmission
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作者 Salama Abdelhady 《Journal of Electromagnetic Analysis and Applications》 2013年第4期157-161,共5页
Following an entropy approach, the electric current can be postulated as a flow of electromagnetic waves that has an electric potential. Such postulate is verified in this article by results of experimental measuremen... Following an entropy approach, the electric current can be postulated as a flow of electromagnetic waves that has an electric potential. Such postulate is verified in this article by results of experimental measurement then it is applied to review Tesla’s discovery of wireless power transmission. Tesla discovered the wireless transmission of electric power during his operation in an entirely new domain of physics based on abrupt discharging of electrostatic charges. He realized that electrons were not responsible for such discovered phenomena. So, he called the new energy as “Radiant Electricity”. He didn’t identify that the true nature of electric current was a flow of electromagnetic waves that can be normally radiated through air. So, he proposed the term “Aether gas” to describe the discovered transfer of the electric charges by radiation from his designed tower, though air, to specified receivers. Following an entropy approach, the nature of the discovered radiated energy can be identified as electromagnetic waves that have an electric potential. So, the followed approach succeeds in eliminating the confusing observations of Tesla’s measurements in his famous experiment and the confusions found in modern literature that deals with such energy as an “Ambiguous Radiant Energy”. 展开更多
关键词 entropy Tesla’s DIsCOVERY Radiant ENERGY ELECTROMAGNETIC WAVEs
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An Algorithm to Generate Probabilities with Specified Entropy
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作者 Om Parkash Priyanka Kakkar 《Applied Mathematics》 2015年第12期1968-1976,共9页
The present communication offers a method to determine an unknown discrete probability distribution with specified Tsallis entropy close to uniform distribution. The relative error of the distribution obtained has bee... The present communication offers a method to determine an unknown discrete probability distribution with specified Tsallis entropy close to uniform distribution. The relative error of the distribution obtained has been compared with the distribution obtained with the help of mathematica software. The applications of the proposed algorithm with respect to Tsallis source coding, Huffman coding and cross entropy optimization principles have been provided. 展开更多
关键词 entropy source Coding Kraft’s INEQUALITY HUFFMAN CODE Mean CODEWORD Length Uniquely Decipherable CODE
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