87 results on '"刘 衍"'
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2. 解决高维优化和特征选择问题的多策略 改进麻雀搜索算法.
- Author
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刘衍平, 奚金明, 郑荣艳, 张坤坤, 宋富洪, 蒋忠远, and 廖彬
- Abstract
In order to solve the problems of slow convergence speed, easy falling into local optima, and weakened population diversity in solving high-dimensional complex optimization problems in the sparrow search algorithm (SSA), an improved sparrow search algorithm based on seagull optimization algorithm operator and whale optimization algorithm operator (SWSSA) was proposed. Firstly, an adaptive population proportion strategy was designed to enhance the diversity of the population during the iteration process. Secondly, incorporating the whale optimization algorithm bubble net predation strategy in the local search stage, the local search ability of the sparrow search algorithm and accelerates convergence speed was enchanced. Then, an improved seagull optimization algorithm operator was introduced at the follower position to reduce the probability of the algorithm falling into local optima. Finally, 12 high-dimensional benchmark test functions and 16 high-dimensional datasets from UCI websites were selected for simulation experiments to compare SWSSA with basic SSA, SSA variant versions, golden sine algorithm (GSA), butterfly optimization algorithm (BOA), slime mold algorithm (SMA), seagull optimization algorithm (SOA), and other improved algorithms proposed by scholars. . The results show that the algorithm proposed achieves an optimal convergence accuracy of 100% on 12 test functions, with the fastest convergence speed on about 95% of the test functions, the highest classification accuracy on 9 out of 16 datasets, and the lowest number of 6 optimal feature subsets. It can be seen that the proposed algorithm has certain advantages in handling high-dimensional function optimization and dataset feature selection problems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. 埃万妥单抗致皮肤不良反应并蜂窝织炎1例.
- Author
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刘衍盈 and 颜璐璐
- Subjects
EPIDERMAL growth factor receptors ,PENICILLIN G ,BONE metastasis ,GENETIC testing ,DRUG therapy - Abstract
Copyright of Chinese Journal of Dermatovenereology is the property of Xi'an Jiaotong University Periodicals Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
4. 不同水平植物精油对辽宁绒山羊断奶羔羊 生长性能、消化率、血清生化指标及腹泻的影响
- Author
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孙亚波, 刘衍芬, 徐晓江, 韩迪, 孙淑琴, 于明, 冀红芹, and 王春艳
- Abstract
The aim of this experiment was to study the effects of different levels of plant essential oils on the growth performance, nutrient apparent digestibility, serum biochemical indexes, and diarrhea status of Liaoning cashmere goat weaning lambs. A total of 48 healthy weaned male lambs with a body weight of (16.92±0.50) kg and age of (90±5) days were randomly divided into four groups with three replicates per group and four goats per replicate. Lambs in control group, test group 1, test group 2 and test group 3 were fed granule diets containing 0, 0.01%, 0.03%, and 0.05% plant essential oil, respectively. The pre-test period was seven days, and the formal experiment period was 53 days. The results showed that the average daily gain in test groups 1, 2, and 3 was extremely higher than that in control group (P<0.01), and the ratio of feed to gain was significantly lower than that in control group (P<0.05). The apparent digestibility of digestible energy, crude protein, crude fat, crude fiber, acid detergent fiber, calcium, and total phosphorus in test group 2 were extremely higher than those in control group (P<0.01). The concentrations of serum glucose, insulin, triglyceride, total cholesterol, and albumin in test group 2 were extremely higher than those in control group (P<0.01). Serum glucagon and uric acid concentrations were extremely lower than those of control group (P<0.01), and serum non-esterification fatty acid, β-hydroxybutyric acid and urea nitrogen concentrations were significantly lower than those of control group (P<0.05). The activities of superoxide dismutase, glutathione peroxidase, and catalase in serum of test group 2 were extremely higher than those of control group (P<0.01), and the content of malondialdehyde was significantly lower than that of control group (P<0.05). The diarrhea rate of lambs in test groups 1, 2 and 3 was lower than that in control group, the recovery rate was higher than that in control group, and the recovery time and treatment cost were extremely lower than that in control group (P<0.01). The results show that supplementation of 0.03% plant essential oil in the diet of weaned lambs can improve growth performance, apparent digestibility of nutrients, enhance metabolic efficiency of carbohydrate, lipid and protein, improve antioxidant capacity, reduce diarrhea rate and shorten the recovery time of diarrhea. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
5. 基于 PAST 的毫米波雷达 MIMO 阵列幅相 误差校正算法.
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王纪平, 刘衍琦, 邓钱钰, 郭淑婷, and 毛新华
- Abstract
Copyright of Journal of Signal Processing is the property of Journal of Signal Processing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
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6. 基于脑电信息的图感认知响应规律 及其量化分析方法.
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伊鹏, 田兴辉, 刘广斗, 魏庆冰, 王帅, and 刘衍聪
- Abstract
Copyright of Journal of Graphics is the property of Journal of Graphics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
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7. CMA膨胀土生态改性剂及施工关键技术
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李, 博科, primary, 高, 国文, additional, 李, 永刚, additional, 刘, 衍文, additional, and 高, 克, additional
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- 2023
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8. -种适用于星载大斜视聚束 SAR 的改进距离 徙动算法.
- Author
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邓钱钰, 王纪平, 郭淑婷, 杨 果, 刘衍琦, and 毛新华
- Abstract
Copyright of Journal of Signal Processing is the property of Journal of Signal Processing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
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9. 建设完全的学校心理健康教育工作体系.
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刘衍玲, 刘鑫, 郭成, and 卢志
- Abstract
Copyright of Moral Education China is the property of Chinese Academy of Educational Sciences, Moral Education China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
10. 西格列汀二甲双胍复合制剂治疗 2 型糖尿病的药物经济学评价.
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张 明, 张荣迪, 刘 璐, 刘 畅, 刘衍君, and 闫美兴
- Abstract
Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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11. 荧光探针在食品中甲醛检测的最新应用进展.
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王 帅, 邹勇平, 周元元, 胡 云, 杨 嘉, 梁志春, 周可欣, and 刘衍彤
- Abstract
Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
12. 基于流式细胞术的细菌快速 分型检测方法.
- Author
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朴 莹, 江寅申, 刘衍朋, 余华海, and 高小炎
- Abstract
Copyright of Experimental Technology & Management is the property of Experimental Technology & Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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13. 聚芳醚酮 (PAEK) 树脂熔体黏度及冲击能量 对其复合材料冲击损伤行为的影响.
- Author
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顾洋洋, 张金栋, 刘刚, 刘衍腾, 甘建, and 杨曙光
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MATERIAL plasticity ,CARBON fibers ,SYNTHETIC gums & resins ,SHEARING force ,SURFACE cracks - Abstract
Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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14. 习近平关于共同富裕重要论述的历史逻辑、 科学内涵与实践方略.
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刘衍峰 and 赵麑
- Subjects
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SOCIAL development , *COMMUNIST parties , *CONSCIOUSNESS , *SOCIALISM , *REFORMS , *FAIRNESS - Abstract
Common prosperity is the essential requirement of socialism and reflects the value pursuit of Chinese path to modernization. Xi Jinping's important statement on common prosperity has a deep historical logic, scientific theoretical connotation and distinct practical character. From the perspective of historical logic, Xi Jinping's important statement on common prosperity lies in the inheritance of excellent Chinese traditional culture, the inheritance of Marx and Engels' theory of common prosperity, and the centuries-old exploration and practice of the Communist Party of China for the cause of common prosperity. In terms of scientific connotation, Xi Jinping's important thesis on common prosperity is that the leadership of the CPC must be adhered to in order to achieve common prosperity, that common prosperity is an essential requirement of socialism, that the target subject of common prosperity is the entire population, that common prosperity is both material and spiritual, that achieving common prosperity is an essential requirement of Chinese path to modernization, and that the practice of common prosperity is an important feature of the new form of human civilisation. In terms of practical paths, promoting high-quality social development, improving the three distribution systems and continuing to deepen reforms across the board will help to achieve common prosperity. The theoretical innovation of Xi Jinping's important discourse on common prosperity helps to enhance the practical consciousness of realising common prosperity. [ABSTRACT FROM AUTHOR]
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- 2023
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15. 蛭石复混基质对辣椒育苗的影响.
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刘衍晨, 刘志刚, 白新慧, 乔鹏, 徐诚, 白慧敏, and 张娟
- Abstract
Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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16. 绿色建筑设计在高层民用建筑设计应用.
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丁一飞 and 刘衍义
- Abstract
Copyright of Architectural Design & Research is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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17. 基于分类概念格的动态策略存取模型
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焦素云, 刘衍珩, and 魏达
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Telecommunication ,TK5101-6720 - Published
- 2011
18. 车载自组网的可信认证与信任评估框架
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吴静, 刘衍珩, 王健, and 李伟平
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Telecommunication ,TK5101-6720 - Published
- 2009
19. 两性聚羧酸减水剂常温合成工艺与 性能研究.
- Author
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刘衍东, 柯凯, and 吕阳
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POLYCARBOXYLIC acids ,ACRYLIC acid ,REDUCING agents ,MONOMERS ,ETTRINGITE ,ADDITION polymerization ,AMMONIUM chloride ,CALCIUM hydroxide - Abstract
Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
20. 用于移动路径预测的混合Markov模型
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余雪岗, 刘衍珩, 魏达, and 田明
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Telecommunication ,TK5101-6720 - Published
- 2006
21. 移动IP切换时资源分配动态策略生成机制研究
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刘雪洁, 刘衍珩, 魏达, and 闻喆
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Telecommunication ,TK5101-6720 - Published
- 2006
22. GPRS中分组调度算法
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刘衍珩, 孙惠平, and 苑森淼
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Telecommunication ,TK5101-6720 - Published
- 2002
23. 一种增强型动态图的软件水印算法.
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王 巍, 何 颖, 谭永坤, and 刘衍珩
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DIGITAL watermarking ,COPYRIGHT ,GRAPH algorithms ,ALGORITHMS ,COMPUTER software ,INVISIBILITY ,WATERMARKS - Abstract
Copyright of Journal of Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
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24. Asparagine-linked glycosylation modifies voltage-dependent gating properties of CaV3.1-T-type Ca2+ channel
- Author
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劉, 衍恭 and 劉, 衍恭
- Abstract
博士(医学), 大分大学
- Published
- 2021
25. 近20年青海湖水量变化遥感分析
- Author
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ZHANG Hongyuan, null 张洪源, null 吴艳红, null 刘衍君, null 郭立男, WU Yanhong, LIU Yanjun, and GUO Linan
- Subjects
Ecology ,Geography, Planning and Development ,Earth and Planetary Sciences (miscellaneous) ,Nature and Landscape Conservation - Published
- 2018
- Full Text
- View/download PDF
26. 远程医疗技术在糖尿病足患者管理中应用的研究进展.
- Author
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刘衍芮, 魏晓艺, 李灵玉, 李杰, and 邹树芳
- Abstract
远程医疗技术促进了信息技术和医疗服务行业的紧密结合, 且应用范围广, 可协助临床 医务人员监测和管理糖尿病足患者, 减少不良事件发生。该文就远程医疗概念, 国内外远程医疗技术 在糖尿病足患者中的应用形式和效果、存在的问题及建议进行综述, 以期为远程医疗技术在糖尿病足 患者管理中推广应用提供参考和依据。 [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
27. 用聚毗咯改性电解猛渣去除废水中的六价铅.
- Author
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邵黎, 杨秀端, 魏华, 马梦雨, 刘衍昌, and 李佳
- Subjects
LANGMUIR isotherms ,ELECTROLYTIC manganese ,ADSORPTION kinetics ,ADSORPTION capacity ,ELECTROSTATIC interaction ,CHROMIUM removal (Water purification) ,WATER purification - Abstract
Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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28. 新型稗谷牧草引种适应性及测产研究.
- Author
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孙亚波, 部卫平, 贾富勃, 俞美子, 鄂禄祥, 刘衍芬, 孙淑琴, and 吕丹娜
- Abstract
Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
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29. 深部煤层气开发管壁煤粉黏附特性.
- Author
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张芬娜, 宋云飞, 朱洪迎, 韩 帅, 石怀龙, 薛立昆, and 刘衍聪
- Subjects
PULVERIZED coal ,GAS wells ,EARTH temperature ,COALBED methane ,FLUID flow ,POWDERS - Abstract
Copyright of Journal of China University of Petroleum is the property of China University of Petroleum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
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30. 市政工程项目的成本控制路径分析
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刘, 衍兰, primary
- Published
- 2019
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31. 基于频谱恢复的 QR26T 雷达非线性 调频误差校正方法.
- Author
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刘衍琦金, 秋王, 跃飞, and 毛新华
- Abstract
Copyright of Journal of Signal Processing is the property of Journal of Signal Processing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
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32. 基于语义先验和深度约束的室内动态场景 RGB-D SLAM 算法.
- Author
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姜昊辰, 刘衍青, 彭镜铨, 李嘉茂, 朱冬晨, and 张晓林
- Abstract
Copyright of Information & Control is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
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33. 双层异纹大提花织物互不露底接结点位置表征.
- Author
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刘衍霞, 卜佳仙, 王涵, 王姜, and 汪军
- Subjects
WEAVING ,TEXTILES ,LANGUAGE & languages - Abstract
Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
34. 东平湖表层沉积物中多氯联苯来源初探.
- Author
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陈 丽, 刘衍君, 曹建荣, and 杨 坤
- Abstract
The contentrations of 7 polychlorinated biphenyls in 16 surface sediments from Dongping Lake were determined by GC-μECD;the spatial distribution;Arcgis10.2 IDW was used to determine spatial distribution of PCBs;Source apportionment of PCBs in the surface sediments was conducted by principal component analysis(PCA). Results showed that the contentrations of total PCBs ranged from nd to 605./Mean while,It found that the main part in surface sediments of Dong ping Lake was the higher chlorinated homologues of PCBs. Which revealed that PCBs in the sediments mainly originated from leakage of capacitor,cement plants and electric furnace steelmaking plants around Dongping Lake and along the Dawen River. Moreover,the congener compositions of the sediments were different from known commercial Aroclors. This could explain that the source of PCBs in surface sediments of Dongping Lake was complex. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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35. 埕岛极浅海油田高速高效开发调整关键技术.
- Author
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束青林, 张本华, 高喜龙, 张伟丰, 王志伟, 刘衍聪, and 张在振
- Subjects
TRANSPORTATION engineering ,DRILLING platforms ,OFFSHORE gas well drilling ,GAS wells ,HIGH technology ,OIL fields ,OIL field flooding - Abstract
Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
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36. 职业性和专业性是教师发展的双翼 ---对话张大均教授.
- Author
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刘衍玲
- Abstract
Teacher development is the foundation of education development. Teacher development is a proposition with broad denotations and rich connotations, which involves both the external conditions of teacher development and the development of the individual qualities of teachers. Occupationalization and specialization are not only the objective requirements for the development of modern teachers, but also the key characteristics of their personal qualities. The development of teachers’ occupationalization and specialization runs through the entire career of teachers. Whether it is the organized teacher education (training) or the independent personal growth of teachers, the importance should be attached to the improvement of teachers’ occupationalization and specialization. The occupational and specialized development of teachers is influenced by both the environment and the individual factors, therefore, their occupational and specialized development at different stages of their growth is not only consistent, but also has different tasks. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
37. 基于矩阵方法的Banzhaf值的计算及应用.
- Author
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夏美霞, 李海涛, 丁雪莹, and 刘衍胜
- Subjects
MATRIX multiplications ,CHARACTERISTIC functions ,DEFINITIONS ,GENETIC disorders ,EXPECTED returns ,BIOLOGICAL networks - Abstract
Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
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38. Design and Simulation of Ultrasonic Vibration Worktable in Laser Cladding
- Author
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刘庆 Liu Qing, 尹晓丽 Yin Xiaoli, 任海燕 Ren Haiyan, 刘衍聪 Liu Yancong, and 范常峰 Fan Changfeng
- Subjects
Materials science ,Ultrasonic vibration ,Composite material ,Electrical and Electronic Engineering - Published
- 2014
- Full Text
- View/download PDF
39. Temperature and Stress Analysis of Dual-Beam Laser Cladding on Gray Cast Iron Surface
- Author
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杨光辉 Yang Guanghui, 刘衍聪 Liu Yancong, 尹晓丽 Yin Xiaoli, 范常峰 Fan Changfeng, and 许鹏云 Xu Pengyun
- Subjects
Materials science ,Metallurgy ,engineering ,Cast iron ,Electrical and Electronic Engineering ,engineering.material ,Composite material ,Dual beam - Published
- 2014
- Full Text
- View/download PDF
40. Study on Processing Strategy of Complicated Doubly Curved Surface in Laser Forming
- Author
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姚振强 Yao Zhenqiang, 刘衍聪 Liu Yancong, 胡俊 Hu Jun, and 石永军 Shi Yongjun
- Subjects
Surface (mathematics) ,Materials science ,Optics ,law ,business.industry ,Electrical and Electronic Engineering ,Laser ,business ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention - Published
- 2010
- Full Text
- View/download PDF
41. Influence of Immersion Medium Surroundings on Laser Heat Processing on Substrate Surface
- Author
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伦冠德 Lun Guande, 伊鹏 Yi Peng, 刘衍聪 Liu Yancong, 石永军 Shi Yongjun, and 任红伟 Ren Hongwei
- Subjects
Heat processing ,Materials science ,law ,Immersion (virtual reality) ,Substrate surface ,Electrical and Electronic Engineering ,Composite material ,Laser ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention - Published
- 2010
- Full Text
- View/download PDF
42. 基于“雨课堂”的医学影像设备学信息化教学实践探索.
- Author
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刘衍素, 周跃根, and 石磊
- Abstract
Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
43. Method to Calculate Light Intensity of Warning Light for Temporary Closure of Airport Runway
- Author
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Hou Qizhen, 侯启真, primary, Liu Yanfan, 刘衍帆, additional, and Xue Rongrong, 薛荣荣, additional
- Published
- 2017
- Full Text
- View/download PDF
44. Method to Calculate Light Intensity of Warning Light for Temporary Closure of Airport Runway
- Author
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侯启真 Hou Qi-zhen, 刘衍帆 Liu Yanfan, and 薛荣荣 Xue Rong-rong
- Subjects
Light intensity ,Meteorology ,Closure (topology) ,Environmental science ,Runway ,Electrical and Electronic Engineering ,Atomic and Molecular Physics, and Optics - Published
- 2017
- Full Text
- View/download PDF
45. 蛋胚成活性分拣机器人真空吸盘装置设计与试验.
- Author
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黄超, 刘衍聪, and 伊鹏
- Abstract
There are problems such as egg embryo falling and embryo aspiration in the sorting process of the 168-egg tray automatic sorting devices. In order to solve these problems, combined with the existing egg embryo sorting technology in China and abroad, we take the vacuum generator with negative pressure control as the core to design a vacuum chuck with independent negative control circuits. Based on the theoretical analysis of airflow fields during the process of holding egg embryo, the levitation force of the egg embryo and the suction cup is compared with the negative pressure suction at the time of contact, and the suction cup is optimized. At the time of holding, the sucker can be a good coupling with the egg embryo, so as to reduce the suction negative pressure. Meanwhile, the influencing factors of the vacuum sucker airflow field, such as the relationship between the length of the negative pressure trachea and the response time of the negative pressure, the performance of the vacuum generator, the shape of the sucker, the force of suction, the capacity of the accumulator and the amount of negative pressure, are analyzed theoretically and tested, thus allowing to optimize the control mode of the gas path. Through the analysis of the airflow field, the high pressure accumulator is used to drive the vacuum generator to provide negative pressure, and each sucker is controlled independently. The negative pressure balance of the vacuum sucker is achieved by using single point negative pressure generation and single point control. This method eliminates the negative pressure difference between the pipelines caused by the centralized negative pressure supply of the vacuum pumps, and it also prevents the egg embryo from falling and the leakage phenomenon caused by negative pressure unloading near the negative pressure pipeline when a pipe leaks. The vacuum generator's independent circuit for the control of negative pressure also limits the negative pressure, thus reducing the negative pressure circuit's negative pressure fluctuations, improving the reliability of the system support, and also solving the problem of embryo aspiration caused by an excessive negative partial pressure in the centralized negative pressure supply mode. Through the egg embryo holding kinetics, combined with the mobile control system requirements of the sucker device, the axial and radial forces required to suck the eggs are analyzed, and the pleated suction cup and the buffer rod of sucker are used, so the sucking disc and egg embryo can be well coupled before being sucked. It can also reduce the critical flow rate, so as to reduce the critical negative pressure of egg embryo. This solves the problem of germplasm aspiration during egg absorption, improves the dynamic response of the system, and reduces energy consumption. According to the analysis and design of the prototype, the egg sorting test and pressure supply performance verification of the negative pressure system are carried out. Each independent negative pressure circuit achieves a stable negative pressure supply, therefore reducing the amount of air consumption. The reliable embryo egg absorption rate is 99.89%, without any egg embryo falling nor embryo aspiration phenomenon. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
46. 大团圆:霍桑的历史哲学与现实关怀.
- Author
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方文开 and 刘 衍
- Abstract
Copyright of Foreign Literature Studies is the property of Foreign Literature Studies and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
47. 基于矩估计法的P范分布参数估计.
- Author
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潘雄, 罗静, 刘衍宏, 韦忠扬, and 徐景田
- Abstract
Copyright of Geomatics & Information Science of Wuhan University is the property of Geomatics & Information Science of Wuhan University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
48. 师德建设的关键:促进从他律向自律的转化.
- Author
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张大均 and 刘衍玲
- Abstract
The formation of teachers’ morality is a gradual process from the outside to the inside, what counts is to promote the transformation from heteronomy to autonomy. In order to form the good morality of teachers, it is a need to solve the difficult position in the current construction of teachers’ morality. The main principles the transformation of teachers’ morality from heteronomy to autonomy should follow are the unity of social values and individual values, the unity of the traditional teachers’ morality and the demand of the times and the unity of the objective requirements of teachers’ morality and the inner needs of teachers. In order to realize the effective transformation of teachers’ morality from heteronomy to autonomy, not only the psychological process of "obedience-self-identity-internalization-habituation"ought to be focused on, but also a longstanding mechanism ought to be established which promotes the construction of teachers’ morality. [ABSTRACT FROM AUTHOR]
- Published
- 2017
49. Design and Simulation of Ultrasonic Vibration Worktable in Laser Cladding
- Author
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Liu Yancong, 刘衍聪, primary, Yin Xiaoli, 尹晓丽, additional, Ren Haiyan, 任海燕, additional, Fan Changfeng, 范常峰, additional, and Liu Qing, 刘庆, additional
- Published
- 2014
- Full Text
- View/download PDF
50. Temperature and Stress Analysis of Dual-Beam Laser Cladding on Gray Cast Iron Surface
- Author
-
Liu Yancong, 刘衍聪, primary, Fan Changfeng, 范常峰, additional, Yin Xiaoli, 尹晓丽, additional, Yang Guanghui, 杨光辉, additional, and Xu Pengyun, 许鹏云, additional
- Published
- 2014
- Full Text
- View/download PDF
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