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科尔沁长调民歌调式特征分析 被引量:2
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作者 吴黎晗 《内蒙古大学艺术学院学报》 2011年第3期50-56,共7页
对乌兰杰先生收集整理成册的《科尔沁长调民歌集》中90首科尔沁长调民歌调式分析后,发现科尔沁长调民歌调式不仅有五声性调式,还有六声性甚至七声性的调式,并且转调的类型与手法也是包罗万象。
关键词 科尔沁 长调民歌 调式特征 单一调性 调性变化
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INDUCTION MOTOR SPEED CONTROL SYSTEM BASED ON FUZZY NEURAL NETWORK 被引量:1
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作者 徐小增 李叶松 秦忆 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2004年第3期195-199,共5页
A fuzzy neural network controller with the teaching controller guidance and parameter regulations for vector-controlled induction motor is proposed. The design procedures of the fuzzy neural controller and the teachin... A fuzzy neural network controller with the teaching controller guidance and parameter regulations for vector-controlled induction motor is proposed. The design procedures of the fuzzy neural controller and the teaching controller are described. The parameters of the membership function are regulated by an on-line learning algorithm. The speed responses of the system under the condition, where the target functions are chosen as I qs and ω, are analyzed. The system responses with the variant of parameter moment of inertial J, viscous coefficients B and torque constant K tare also analyzed. Simulation results show that the control scheme and the controller have the advantages of rapid speed response and good robustness. 展开更多
关键词 induction motor fuzzy neural network vector control speed control system
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Monotonicity of the tail dependence for multivariate t-copula
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作者 石爱菊 林金官 《Journal of Southeast University(English Edition)》 EI CAS 2011年第4期466-470,共5页
This paper considers the upper orthant and extremal tail dependence indices for multivariate t-copula. Where, the multivariate t-copula is defined under a correlation structure. The explicit representations of the tai... This paper considers the upper orthant and extremal tail dependence indices for multivariate t-copula. Where, the multivariate t-copula is defined under a correlation structure. The explicit representations of the tail dependence parameters are deduced since the copula of continuous variables is invariant under strictly increasing transformation about the random variables, which are more simple than those obtained in previous research. Then, the local monotonicity of these indices about the correlation coefficient is discussed, and it is concluded that the upper extremal dependence index increases with the correlation coefficient, but the monotonicity of the upper orthant tail dependence index is complex. Some simulations are performed by the Monte Carlo method to verify the obtained results, which are found to be satisfactory. Meanwhile, it is concluded that the obtained conclusions can be extended to any distribution family in which the generating random variable has a regularly varying distribution. 展开更多
关键词 multivariate t-copula COPULA inverse gamma distribution MONOTONICITY regularly varying function correlation coefficient
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探究莫扎特幻想式的音乐特点——以《c小调幻想曲》为例
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作者 刘晓瑜 信裕熹 《黄河之声》 2016年第12期8-11,共4页
莫扎特的作品大多呈现给人们的是欢快明朗的音乐,但在《c小调幻想曲》中,莫扎特内心的痛苦与折磨得到了完整的诠释及演绎,独特的音乐风格让人感受到更具深层音乐内涵、更具悲剧色彩的震撼。本文以"频繁的调性变化"、"意... 莫扎特的作品大多呈现给人们的是欢快明朗的音乐,但在《c小调幻想曲》中,莫扎特内心的痛苦与折磨得到了完整的诠释及演绎,独特的音乐风格让人感受到更具深层音乐内涵、更具悲剧色彩的震撼。本文以"频繁的调性变化"、"意外的旋律与和声进行"以及"多变的速度、力度"为纲对作品进行详尽分析,深入探究莫扎特幻想式的音乐特点。 展开更多
关键词 莫扎特 幻想曲 调性变化 意外进行
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Investigation of the Mutagenic Potential of Immunomodulator Arglabin Native in Tablets in the Ames Test
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作者 Khorlan I. Itzhanova Roza B. Seidakhmetova Sergazy M. Adekenov 《Journal of Pharmacy and Pharmacology》 2018年第8期790-795,共6页
The mandatory preclinical safety evaluation is an essential prerequisite to obtain the qualitative and effective medicines. Due to the fact that drugs may reveal genotoxic properties, the investigation of their mutage... The mandatory preclinical safety evaluation is an essential prerequisite to obtain the qualitative and effective medicines. Due to the fact that drugs may reveal genotoxic properties, the investigation of their mutagenic activity is an obligatory part of the preclinical drug safety program. The aim of the research is to study mutagenic properties of a new original immunomodulator Arglabin native in tablets in the induced test of gene mutations (the Ames test) on Salmonella typhimurium strains. Materials and methods: Four strains of S. typhimurium TA98, TA100, TA1535, and TA1537 were used to assess the mutagenicity in the Ames test. Results and conclusions: No statistically reliable dose-dependent increase in the number of revertant colonies of Salmonella typhimurium has been observed in the presence of the given drug within the investigated dose ranges from 5.0 to 100.0 μg/mL for strains TA100 and TA1535, and from 5.0 to 250 μg/mL for strains TA98 and TA1537 against the baseline of spantaneous mutations. Arglabin native in tablets does not reveal a mutagenic activity within the studied dose ranges on Salmonella typhimurium strains TA98, TA100, TA1535, TA1537. 展开更多
关键词 Arglabin native the Ames test mutagenic properties.
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Peritrophin-like protein from Litopenaeus vannamei (LvPT) involved in white spot syndrome virus (WSSV) infection in digestive tract challenged with reverse gavage
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作者 谢世筠 李富花 +2 位作者 张晓军 张继泉 相建海 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2017年第6期1524-1530,共7页
The peritrophic membrane plays an important role in the defense system of the arthropod gut. The digestive tract is considered one of the major tissues targeted by white spot syndrome virus (WSSV) in shrimp. In this... The peritrophic membrane plays an important role in the defense system of the arthropod gut. The digestive tract is considered one of the major tissues targeted by white spot syndrome virus (WSSV) in shrimp. In this study, the nucleotide sequence encoding peritrophin-like protein of Litopenaeus vannamei (LvPT) was amplified from a yeast two-hybrid library of L. vannamei. The epitope peptide of LvPT was predicted with the GenScript OptimumAntigenTM design tool. An anti-LvPT polyclonal antibody was produced and shown to specifically bind a band at -27 kDa, identified as LvPT. The LvPT protein was expressed and its concentration determined. LvPT dsRNA (4 pg per shrimp) was used to inhibit LvPT expression in shrimp, and a WSSV challenge experiment was then performed with reverse gavage. The pleopods, stomachs, and guts were collected from the shrimp at 0, 24, 48, and 72 h post-infection (hpi). Viral load quantification showed that the levels of WSSV were significantly lower in the pleopods, stomachs, and guts of shrimp after LvPT dsRNA interference than in those of the controls at 48 and 72 hpi. Our results imply that LvPT plays an important role during WSSV infection of the digestive tract. 展开更多
关键词 Litopenaeus vannamei digestive tract peritrophin-like protein dsRNA interference binding specificity white spot syndrome virus (WSSV) reverse gavage
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关于京剧唱腔的调式探索 被引量:1
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作者 李刚 李楠 《戏曲艺术》 北大核心 2006年第1期80-90,共11页
在京剧唱腔中,调式、板式转换丰富多彩,但各有其严格的旋律构成和调式特征,主要由宫、商、角、徵、羽为主音的民族五声调式音阶构成,辅以“清角、变徵、变宫等偏音的运用,使京剧唱腔中的调式、调性更具有独特的色彩变化,根据调式主音的... 在京剧唱腔中,调式、板式转换丰富多彩,但各有其严格的旋律构成和调式特征,主要由宫、商、角、徵、羽为主音的民族五声调式音阶构成,辅以“清角、变徵、变宫等偏音的运用,使京剧唱腔中的调式、调性更具有独特的色彩变化,根据调式主音的不断改变,构成了不同的调性色彩和不同的音乐风格,这些变化对刻画不同的人物性格起着重要作用。本文力求从中国民族调式理论的视角入手,对京剧唱腔中的调式进行系统的剖析,探索它的调式,调性变化规律,从而为京剧音乐创作与教学提供一些新的思考。 展开更多
关键词 京剧唱腔 中国民族五声调式 调式旋律 调性变化
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