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艰巨的任务:把巴赫《咖啡清唱剧》磨成歌剧

歌剧 2024年第4期 54-63页

作者：司马勤李正欣(编译) 不详

您曾在看歌剧时打瞌睡吗?我在纽约最钟爱的小歌剧团之一似乎找到了解决这个问题的决:演出期间,何不找个借口为观众送上含有咖啡因的饮料?当然,这个案例比较特别:(1)演出的作品是巴赫的《咖啡清唱剧》(Coffee Cantata);(2)整部作品时长... 详细信息

您曾在看歌剧时打瞌睡吗?我在纽约最钟爱的小歌剧团之一似乎找到了解决这个问题的决:演出期间,何不找个借口为观众送上含有咖啡因的饮料?当然,这个案例比较特别:(1)演出的作品是巴赫的《咖啡清唱剧》(Coffee Cantata);(2)整部作品时长只有半个小时;(3)现场歌剧院(On Site Opera)是个到处“游荡”的歌剧团,没有固定演出场所;(4)这场演出是在一家咖啡馆里举行。

关键词：清唱剧演出场所巴赫歌剧咖啡馆案例比较

歌剧院不眠夜:年轻观众初尝意大利的音乐传承

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歌剧 2024年第6期 38-47页

作者：司马勤李正欣(编译) 不详

在涉足花天酒地的音乐评论界之前,我在书籍出版社上班。当年我在兰登书屋(Random House)最要好的一位同事得知我对于儿童文学一无所知,觉得很震惊(孩提时代的我很早就开始阅读不少难度高的、成年人看的书籍)。有一天,她送了一本自己小... 详细信息

在涉足花天酒地的音乐评论界之前,我在书籍出版社上班。当年我在兰登书屋(Random House)最要好的一位同事得知我对于儿童文学一无所知,觉得很震惊(孩提时代的我很早就开始阅读不少难度高的、成年人看的书籍)。有一天,她送了一本自己小时候最喜欢的书给我:《天使雕像》(这是中文出版时选用的书名,原书名为From the Mixed-up Files of *** ***,直译应为《巴塞尔·E.弗兰克韦勒夫人的乱糟糟的文件摘录》。)

关键词：兰登书屋孩提时代音乐传承巴塞尔儿童文学年轻观众

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返璞归真:瓦格纳主义前的瓦格纳

歌剧 2024年第9期 80-89页

作者：司马勤李正欣(编译) 不详

应该说我也算得上有些年纪了,所以我还记得多年前指挥家罗杰·诺林顿(Roger Norrington)提出了一个在当年算得上激进的概念:他参考了考古研究以还原古乐器,并按时间顺序演奏贝多芬的全套交响曲。

关键词：瓦格纳贝多芬返璞归真考古研究时间顺序交响曲古乐器指挥家

Microwave Behavior of α-Fe/Fe_3B/Y_2O_3 Nanocomposites in GHz Range Prepared by Melt-Spun Technique

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Journal of Rare Earths 2004年第1期22卷 13-16页

作者： Masahiro Itoh ken-ichi Machida Collaborative Research Center for Advanced Science and Technology Collaborative Research Center for Advanced Science and Technology Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 JapanOsaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan

Nanocomposites α-Fe/Fe 3B/Y 2O 3 were prepared by a melt-spun technique, and the electromagnetic wave absorption properties were measured in the 0 05～20 05 GHz range. Compared with α-Fe/Y 2O 3 composites, the resonance frequency (f r) of α-Fe/Fe 3B/Y 2O 3 shifted to a higher frequency range due to the large anisotropy field (H A) of tetragonal Fe 3B (～0 4 mA·m -1). The relative permittivity (ε r=ε r′-jε r″) was constantly low over the 0 5～10 GHz region, which indicates that the composite powders have a high resistivity (ρ=～100 Ωm). The effective electromagnetic wave absorption (RL<-20 dB) was obtained in a frequency range of 2.7～6.5 GHz on resin composites of 80% (mass fraction) α-Fe/Fe 3B/Y 2O 3 powders, with thickness of 6～3 mm respectively. A minimum reflection loss of -33 dB was observed at 4.5 GHz with an absorber thickness of 4 mm.

关键词： melt-spun nanocomposites electromagnetic wave absorption anisotropy field matching frequency

Effects of uniaxial compressive strain on the electronic- transport properties of zigzag carbon nanotubes

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Nano Research 2016年第5期9卷 1267-1275页

作者： Masato Ohnishi ken Suzuki Hideo Miura Fracture and Reliability Research Institute Graduate School of Engineering Tohoku University Sendai 980-8579 Japan

Recently, substantial attention has been paid to the strain sensitivity of the carbon nanotubes＇（CNTs＇） electronic properties. In this study, the relationships between the geometric structures and electronic states of zigzag CNTs under uniaxial compressive strain were investigated. We found that different factors dominate the electronic states of zigzag CNTs depending on the strain regions： the initial stage of the strain loading, which lasts until column-buckling deformation begins, and the strain regions corresponding to column- and shell-buckling deformations. Because shell-buckling deformation significantly increases the re-orbital angle, the angle between the π orbital axis vectors of adjacent atoms, strong localization of the density of states （LDOS） occurs in the buckled area. We also analyzed the current able to pass through deformed CNTs using a tight-binding-based Green＇s function approach and determined that the current can be significantly suppressed by applying uniaxial compressive strain. Our method of predicting the electronic state of a deformed CNT based on the π-orbital angle is expected to be useful for predicting the electronic properties of CNT-based electronic devices and sensors.

关键词： carbon nanotube strain buckling deformation Green's function method electronic-transport property

Hepatitis B:Who should be treated?-managing patients with chronic hepatitis B during the immune-tolerant and immunoactive phases

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World Journal of Gastroenterology 2021年第43期27卷 7497-7508页

作者： Miwa Kawanaka ken Nishino Hirofumi Kawamoto ken Haruma Department of General Internal Medicine 2 General Medical CenterKawasaki Medical SchoolOkayama 700-8505Japan

New hepatitis B virus(HBV)infections are decreasing owing to improved antiviral therapy and increased HBV vaccination worldwide;however,the number of HBV infections remains a major cause of liver *** triggers cytotoxic immunity to eliminate HBV-infected ***,the HBV pathophysiology changes in persistently infected individuals depending on host immune responses and HBV DNA proliferation *** prevent liver cirrhosis and carcinogenesis caused by HBV,it is important to treat HBV infection at an early *** treatment is recommended for the immunoactive hepatitis B surface-antigen-positive and-negative phase,but not during the immune-inactive phase or immune-tolerant phase;instead,follow-up is ***,these patients should be monitored through regular blood tests to accurately diagnose the immune-inactive or-tolerant *** treatment regimen should be determined based on the age,sex,family history of liver cancer,and liver fibrosis status of *** treatment is often recommended due to various problems during the immune-tolerant *** review compares the four major international practice guidelines,including those from the Japanese Society of Hepatology,and discusses strategies for chronic hepatitis B treatment during the immune-tolerant,immune-inactive,and resolved ***,recommended hepatitis B antiviral therapy and follow-up protocols are discussed.

关键词： Hepatitis B Immune tolerance Immune-inactive Anti-viral therapy Hepatocellular carcinoma Cirrhosis

STRUCTURE AND DYNAMICS OF POLYMERIC MATERIALS IN NANO-SCALE

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Chinese Journal of Polymer Science 2011年第1期29卷 43-52页

作者： Toshio Nishi So Fujinami ken Nakajima WPI Advanced Institute for Materials Research Tohoku University

The nano-palpation technique, i.e., nanometer-scale elastic and viscoelastic measurements based on atomic force microscope, is introduced. It is demonstrated to be very useful in analyzing nanometer-scale materials properties for the surfaces and interfaces of various types of soft materials. It enables us to obtain not only structural information but also mechanical information about a material at the same place and at the same time.

关键词： Nano-palpation Atomic force microscope Soft material Young's modulus Viscoelasticity.

基于熵权-TOPSIS法的货运航线网络设计研究

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中国民航飞行学院学报 2024年第1期35卷 5-8,24页

作者：朱学松陈肯中国民用航空飞行学院四川广汉618307

本文提出了一种轴辐式货运航线网络设计的方法。运用聚类分析(K-Means)进行枢纽机场选址,以枢纽机场间多重连接的方式,建立无机场容量限制的轴辐式货运航线网络优化模型,运用枚举法求解最终得到一个较为合理的货运航线网络。其中为提高... 详细信息

本文提出了一种轴辐式货运航线网络设计的方法。运用聚类分析(K-Means)进行枢纽机场选址,以枢纽机场间多重连接的方式,建立无机场容量限制的轴辐式货运航线网络优化模型,运用枚举法求解最终得到一个较为合理的货运航线网络。其中为提高聚类精度,引入熵权-TOPSIS法对数据进行处理,通过对TOPSIS评价数据进行聚类得到精度较高的聚类结果,实验表明基于熵权-TOPSIS的聚类分析较传统的聚类分析降低了运输成本。

关键词：交通运输工程航线网络设计熵权-TOPSIS K-Means聚类分析

REKF and RUKF for pico satellite attitude estimation in the presence of measurement faults

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Journal of Systems Engineering and Electronics 2014年第2期25卷 288-297页

作者： Halil Ersin Sken Chingiz Hajiyev Department of Space and Astronautical Science The Graduate University for Advanced Studies (Sokendai) Aeronautics and Astronautics Faculty Istanbul Technical University

When a pico satellite is under normal operational condi- tions, whether it is extended or unscented, a conventional Kalman filter gives sufficiently good estimation results. However, if the measurements are not reliable because of any kind of malfunc- tions in the estimation system, the Kalman filter gives inaccurate results and diverges by time. This study compares two different robust Kalman filtering algorithms, robust extended Kalman filter （REKF） and robust unscented Kalman filter （RUKF）, for the case of measurement malfunctions. In both filters, by the use of de- fined variables named as the measurement noise scale factor, the faulty measurements are taken into the consideration with a small weight, and the estimations are corrected without affecting the characteristic of the accurate ones. The proposed robust Kalman filters are applied for the attitude estimation process of a pico satel- lite, and the results are compared.

关键词： pico satellite attitude estimation robust Kalman filter-ing extended Kalman filter (EKF) unscented Kalman filter (UKF).