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河北广播电视台类型化广播播出系统建设与应用
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作者 马春娟 何琦 +2 位作者 吴琪 薛丹 夏李良 《卫星电视与宽带多媒体》 2020年第6期49-50,共2页
本文介绍了河北广播电视台音乐频率群的类型化广播播出系统,此系统具备丰富的音乐编排策略,可以依照最精准、最严格的专业判断,管理各种音乐类型的歌曲,做到更精准的选播及串连节目,用精彩节目锁定目标族群。在实施过程中,严格按照部署... 本文介绍了河北广播电视台音乐频率群的类型化广播播出系统,此系统具备丰富的音乐编排策略,可以依照最精准、最严格的专业判断,管理各种音乐类型的歌曲,做到更精准的选播及串连节目,用精彩节目锁定目标族群。在实施过程中,严格按照部署方案和实施步骤实现音乐频道群从传统播出系统向类型化播出系统的转变,经过实际应用表明该系统安全可靠,易于操作;新的节目形态和管理模式更易于管理,提高了工作效率;改造后的系统更能适应音乐节目形态的变化。 展开更多
关键词 类型播出系统 编排策略 管理模式
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一种基于π^t演算的安全协议建模方法
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作者 韩进 蔡圣闻 +2 位作者 王崇峻 赖海光 谢俊元 《计算机研究与发展》 EI CSCD 北大核心 2010年第4期613-620,共8页
安全协议模型是安全协议分析与验证的基础,现有的建模方法中存在着一些缺点,如:建模复杂、重用性差等.为此提出了一种类型化的π演算:πt演算,并给出了相应类型推理规则和求值规则,πt演算的安全性也得到了证明.πt演算可以对安全协议... 安全协议模型是安全协议分析与验证的基础,现有的建模方法中存在着一些缺点,如:建模复杂、重用性差等.为此提出了一种类型化的π演算:πt演算,并给出了相应类型推理规则和求值规则,πt演算的安全性也得到了证明.πt演算可以对安全协议、协议攻击者进行形式化建模.基于πt演算的安全协议模型及其建模过程使用NRL协议为例做出了说明.同时给出了攻击者模型,并证明了基于πt演算的安全协议攻击者模型与D-Y攻击者模型在行动能力上是一致的.这保证了基于πt演算的安全协议模型的验证结果的正确性.基于πt演算的建模方法能在协议数据语义、协议参与者知识方面实现细致的描述.与同类方法相比,该方法可提供多种分析支持,具有更好的易用性、重用性.分析表明,该方法可以在建模中发现一定的安全协议漏洞. 展开更多
关键词 安全协议模型 πt演算 安全协议验证 类型化系统 形式方法
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Association of traditional Chinese exercises with glycemic responses in people with type 2 diabetes:A systematic review and meta-analysis of randomized controlled trials 被引量:5
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作者 Ge Song Changcheng Chen +3 位作者 Juan Zhang Lin Chang Dong Zhu Xueqiang Wang 《Journal of Sport and Health Science》 SCIE 2018年第4期442-452,共11页
Background: There is increasing evidence showing the health benefits of various forms of traditional Chinese exercises (TCEs) on the glycemic profile in people with type 2 diabetes. However, relatively little is kn... Background: There is increasing evidence showing the health benefits of various forms of traditional Chinese exercises (TCEs) on the glycemic profile in people with type 2 diabetes. However, relatively little is known about the combined clinical effectiveness of these traditional exercises. This study was designed to perform a systematic review and meta-analysis of the overall effect of 3 common TCEs (Tai Ji Quan, Qigong, Ba Duan Jin) on glycemie control in adults with type 2 diabetes. Methods: We conducted an extensive database search in Cochrane Library, EMBASE, PubMed, Web of Science, EBSCO, and China National Knowledge Infrastructure on randomized controlled trials published between April 1967 and September 2017 that compared any of the 3 TCEs with a control or comparison group on glycemic control. Data extraction was performed by 2 independent reviewers. Study quality was evaluated using the Coehrane Handbook for Systematic Reviews of Interventions, which assessed the risk of bias, including sequence generation, allocation concealment, blinding, completeness of outcome data, and selective outcome reporting. The resulting quality of the reviewed studies was characterized in 3 grades representing the level of bias: low, unclear, and high. All analyses were performed using random effects models and heterogeneity was quantified. We a priori specified changes in biomarkers of hemoglobin A1 c (in percentage) and fasting blood glucose (mmol/L) as the main outcomes and triglycerides, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein-cholesterol, 2-h plasma glucose, and fasting plasma glucose as secondary outcomes.Results: A total of 39 randomized, controlled trials (Tai Ji Quan = 11; Qigong= 6; Ba Duan Jin= 22) with 2917 type 2 diabetic patients (aged 41-80 years) were identified. Compared with a control or comparison group, pooled meta-analyses of TCEs showed a significant decrease in hemoglobin Alc (mean difference (MD)= -0.67%; 95% confidence interval (CI):-0.86% to-0.48%; p 〈 0.00001) and fasting blood glucose (MD = -0.66 mmol/L; 95%CI: -0.95 to -0.37 mmol/L; p 〈 0.0001). The observed effect was more pronounced for interventions that were medium range in duration (i.e., 〉3-〈 12 months). TCE interventions also showed improvements in the secondary outcome measures. A high risk of bias was observed in the areas of blinding (i.e., study participants and personnel, and outcome assessment). Conclusion: Among patients with type 2 diabetes, TCEs were associated with significantly lower hemoglobin Alc and fasting blood glucose. Further studies to better understand the dose and duration of exposure to TCEs are warranted.2018 Published by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/). 展开更多
关键词 Blood glucose HYPOGLYCEMIA Insulin sensitivity Physical activity
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Classification system and structure analysis of marine cultural landscapes of China
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作者 LI Jia-lin GONG Hong-bo 《Marine Science Bulletin》 CAS 2017年第2期75-87,共13页
Marine cultural landscapes are an important part of cultural landscapes,as a new kind of heritage.With reference to the classification of cultural landscapes,a three-level classification system,composed of the marine ... Marine cultural landscapes are an important part of cultural landscapes,as a new kind of heritage.With reference to the classification of cultural landscapes,a three-level classification system,composed of the marine cultural landscape type,the marine cultural landscape subtype and the marine cultural landscape model was constructed in this study,based on the spatial and regional characteristics of marine history and culture.By the analysis of the effects of natural and humanity factors on the formation of marine cultural landscapes,the system structure of the marine cultural landscapes was divided into three major parts:the physical foundation,the marked material and the recessive material. 展开更多
关键词 marine cultural landscape landscape type system composing classification system
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Diversity and Evolution of Inflorescences in Celastrales
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作者 Ivan A. Savinov 《Journal of Life Sciences》 2013年第2期145-152,共8页
Inflorescences structures in context of their evolution have been conducted for 60 genera and 170 species of Celastrales (according to APG (Angiosperm Phylogeny Group) III 2009, almost 60% of genera and 15% of spec... Inflorescences structures in context of their evolution have been conducted for 60 genera and 170 species of Celastrales (according to APG (Angiosperm Phylogeny Group) III 2009, almost 60% of genera and 15% of species from this taxon of the world flora). There are two big groups of inflorescences in Celastrales-intercalary (more often) and terminal. For many genera of Celastrales both types of inflorescences can be observed, although the frequency of their occurrence varies. There is an important difference between two types of inflorescences: character of completion of the main axis (the terminal flower present or absent). Flower opening can be in basipetal (Celastraceae, Brexia) or acropetal (Stackhousiaceae) order. Partial inflorescence types included: simple, compound or umbrellate dichasia, spike, raceme, thyrse. Simple flowers of Parnassia are large, nested on long reproductive shoots, emerging from a rosette, with amplexicaule leaf. 展开更多
关键词 Celastrales CELASTRACEAE Brexia Parnassia Stackhousiaceae INFLORESCENCES structure and development ofinflorescences molecular data.
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PSO type-reduction method for geometric interval type-2 fuzzy logic systems
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作者 赵先章 高一波 +1 位作者 曾隽芳 杨一平 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第6期862-867,共6页
In a special case of type-2 fuzzy logic systems (FLS), i.e. geometric inteIval type-2 fuzzy logic systems (GIT-2FLS), the crisp output is obtained by computing the geometric center of footprint of uncertainly (FO... In a special case of type-2 fuzzy logic systems (FLS), i.e. geometric inteIval type-2 fuzzy logic systems (GIT-2FLS), the crisp output is obtained by computing the geometric center of footprint of uncertainly (FOU) without type-reduction, but the defuzzifying method acts against the corner concepts of type-2 fuzzy sets in some cases. In this paper, a PSO type-reduction method for GIT-2FLS based on the particle swarm optimization (PSO) algorithm is presented. With the PSO type-reduction, the inference principle of geometric interval FLS operating on the continuous domain is consistent with that of traditional interval type-2 FLS operating on the discrete domain. With comparative experiments, it is proved that the PSO type-reduction exhibits good performance, and is a satisfactory complement for the theory of GIT-2FLS. 展开更多
关键词 interval type-2 fuzzy sets PSO algorithm type-reduction
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Hydraulic Properties of Rocky Mountain First-Order Alluvial Systems and Diurnal Water-Level Fluctuations in Riparian Vegetation: An Analysis in Hay Creek, Whitetail Basin, Montana
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作者 W.D. Weight K. Chandler 《Journal of Environmental Science and Engineering》 2010年第9期12-23,共12页
The hydrogeology of first-order streams have been evaluated from 2007 to 2009 as part of the Whitetail Basin Watershed Restoration Project in Hay Creek Canyon located 25 km north of Whitehall Montana, USA. An in-depth... The hydrogeology of first-order streams have been evaluated from 2007 to 2009 as part of the Whitetail Basin Watershed Restoration Project in Hay Creek Canyon located 25 km north of Whitehall Montana, USA. An in-depth study of the riparian area hydrogeology started in the fall of 2007 with the installation of more than 40 hand-augered deeper (〉 1 m) wells to complement preexisting driven metal pipe piezometers (± 1 m) installed in four first-order drainages. Two zones within the shallow alluvial systems were identified. This paper presents the results of a concentrated study conducted in the Hay Creek drainage within the tWO zones. Data loggers placed in some of the wells led to a gradual understanding of the water-level patterns in different vegetative types (Douglas Fir, Aspen, Willow-Alder. and Grass-Sagebrush) over the various seasons. The deeper water-level responses change from seasonal patterns to strongly diurnal during summer months. Diurnal patterns continue until leaves drop from riparian vegetation. This was expected, however, the Douglas fir trees show the same pattern. Near the end of the study a full year of water-level data showing the seasonal behavior changes were collected. Resaturation of the upper zone occurs in the fall with sources of recharge coming from up-drainage. A detailed evaluation of water-level responses from up-drainage to down-drainage piezometers occurs in a "wave-like" resaturation phenomenon that allows one to estimate the bulk hydraulic conductivity of the "alluvial system" aquifer using principles of Darcy's Law. The methods used to evaluate the hydraulic properties and seasonal water-level patterns are presented. 展开更多
关键词 Riparian areas HYDROGEOLOGY first-order streams DIURNAL water-level patterns aquifer properties prescribed fire coniferencroachment.
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描写音乐形态学之定位及其核心概念(上) 被引量:12
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作者 沈洽 《中国音乐学》 CSSCI 北大核心 2011年第3期5-18,2,共14页
描写音乐(形态)学旨在探讨描写、分析和类型化处理音乐声轨迹的方法和技术,是笔者专为民族音乐学从整体上把握、理解和诠释特定音乐文化而设计的一个最基本的研究环节;其整体理论框架包括三对核心概念(描写的/规约的、乐素的/乐位的、... 描写音乐(形态)学旨在探讨描写、分析和类型化处理音乐声轨迹的方法和技术,是笔者专为民族音乐学从整体上把握、理解和诠释特定音乐文化而设计的一个最基本的研究环节;其整体理论框架包括三对核心概念(描写的/规约的、乐素的/乐位的、设定的/约定的)、六大位元系统(音的、调的、腔的、拍的、字位的和复音的)和六种系统化处理技术(物理的、数理的、符号的、民族思维的、自省的和比较的);总的要领是:采用现象学的"悬置"技术直面作为研究对象的音乐声轨迹本身,发现和找出研究对象中对音乐操持者和拥有者而言有意义的各音乐元素的位的系统,按研究对象的操持者和拥有者集体无意识约定的观念为研究对象作类型化处理。由于篇幅所限,本文只涉及学科最核心的部分——学科定位及其核心概念。 展开更多
关键词 人类学的音乐学(民族音乐学)、音乐形态学、描写音乐形态学(描写音乐学) 音乐声(音乐发言)、轨迹、类型处理(系统处理)、认同 描写的/规约的、乐素的/乐位的、设定的/约定的 直面(悬置/现象还原/存而不论/放下) 音、调、腔、拍、字位、复音、位元系统 发明/发现 分类(序/逻辑) 集体无意识、约定俗成 意义、制度性行为 通过乐(记)谱/防范乐(记)谱、通过语词/防范语词、认知框架、(音乐文的)双视角观照
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