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深度融合背景下媒体融媒生产模式创新

中国传媒大学学报（自然科学版） 2024年第3期31卷 66-72页

作者：柴焱朱江北京广播电视台北京100022

为解决现阶段融合媒体生产(简称融媒生产)模式存在的问题,适应新形势下媒体变革和业务创新的需要,本文系统梳理了融媒生产模式的历史和现状,分析了其技术方向和未来发展趋势,探讨了现阶段融媒生产模式的不足。并结合北京广播电视台在业... 详细信息

为解决现阶段融合媒体生产(简称融媒生产)模式存在的问题,适应新形势下媒体变革和业务创新的需要,本文系统梳理了融媒生产模式的历史和现状,分析了其技术方向和未来发展趋势,探讨了现阶段融媒生产模式的不足。并结合北京广播电视台在业务模式转型、技术支撑体系革新方面的实践探索,提出了融媒生产模式转型的思路和方法。该研究为融媒生产模式的探索提供了新思路、新方法、新实践,在技术体系革新中具有诸多创新设计,具有一定的推广价值和借鉴意义。

关键词：融媒生产模式融合传播应用连接总线垂类内容管理生产模式转型

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红塔区鲜食大豆玉米带状复合种植技术

云南农业科技 2024年第3期 33-35页

作者：柴艳波红塔区种植业发展服务中心云南红塔区653100

红塔区在条件适宜区域大力发展鲜食玉米、优质食用大豆(鲜食品种)等多元种植,充分发挥带状复合种植这一立体种植模式的优势,从品种选择、技术规范、田间管理、中耕管理、适时收获等方面探索大豆玉米带状复合种植技术,实现鲜食玉米和鲜... 详细信息

红塔区在条件适宜区域大力发展鲜食玉米、优质食用大豆(鲜食品种)等多元种植,充分发挥带状复合种植这一立体种植模式的优势,从品种选择、技术规范、田间管理、中耕管理、适时收获等方面探索大豆玉米带状复合种植技术,实现鲜食玉米和鲜食大豆协调发展,提高了综合效益,拓宽了农民增产增收的路径。

关键词：红塔区鲜食大豆鲜食玉米种植技术

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医用钛合金表面纳米化组织与性能研究

铸造技术 2024年第2期45卷 142-147页

作者：柴艳于源王瑜陕西盛航鑫材科技有限公司陕西西安712000 中国科学院兰州化学物理研究所固体润滑国家重点实验室甘肃兰州730000 青岛市资源化学与新材料研究中心山东青岛266000

针对近β型TLM钛合金试样表面进行了不同时间的高能喷丸处理,采用金相显微镜(OM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)以及显微硬度仪等对不同喷丸处理后的试样进行了组织观察和性能测试。研究发现,在喷丸的近表层发生了纳米化,形... 详细信息

针对近β型TLM钛合金试样表面进行了不同时间的高能喷丸处理,采用金相显微镜(OM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)以及显微硬度仪等对不同喷丸处理后的试样进行了组织观察和性能测试。研究发现,在喷丸的近表层发生了纳米化,形成了一定厚度的纳米晶层。喷丸处理时间越长,最表层的平均晶粒尺寸越小,晶粒尺寸沿着厚度方向有梯度变化,距喷丸表面越远,晶粒尺寸就会越大。同时纳米晶层的显微硬度相对于基体组织有大幅提高,显微硬度距表面距离越远,显微硬度越低,硬度的提升主要是由于表面晶粒细晶强化的作用所致。

关键词： TLM钛合金高能喷丸表面纳米化组织力学性能

WATuning:A Workload-Aware Tuning System with Attention-Based Deep Reinforcement Learning

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Journal of Computer Science & Technology 2021年第4期36卷 741-761页

作者： Jia-Ke Ge yan-Feng chai Yun-Peng chai Key Laboratory of Data Engineering and Knowledge Engineering of Ministry of Education Renmin University of China Beijing 100872China School of Information Renmin University of ChinaBeijing 100872China College of Computer Science and Technology Taiyuan University of Science and TechnologyTaiyuan 030027China

Configuration tuning is essential to optimize the performance of systems(e.g.,databases,key-value stores).High performance usually indicates high throughput and low *** present,most of the tuning tasks of systems are performed artificially(e.g.,by database administrators),but it is hard for them to achieve high performance through tuning in various types of systems and in various *** recent years,there have been some studies on tuning traditional database systems,but all these methods have some *** this article,we put forward a tuning system based on attention-based deep reinforcement learning named WATuning,which can adapt to the changes of workload characteristics and optimize the system performance efficiently and ***,we design the core algorithm named ATT-Tune for WATuning to achieve the tuning task of *** algorithm uses workload characteristics to generate a weight matrix and acts on the internal metrics of systems,and then ATT-Tune uses the internal metrics with weight values assigned to select the appropriate ***,WATuning can generate multiple instance models according to the change of the workload so that it can complete targeted recommendation services for different types of ***,WATuning can also dynamically fine-tune itself according to the constantly changing workload in practical applications so that it can better fit to the actual environment to make *** experimental results show that the throughput and the latency of WATuning are improved by 52.6%and decreased by 31%,respectively,compared with the throughput and the latency of CDBTune which is an existing optimal tuning method.

关键词： attention mechanism auto-tuning system reinforcement learning(RL) workload-aware

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医用钛合金表面喷丸后微米压痕研究

铸造技术 2024年第6期45卷 551-556页

作者：柴艳于源王瑜郭珉陕西盛航鑫材科技有限公司陕西西安712000 中国科学院兰州化学物理研究所固体润滑国家重点实验室甘肃兰州730000 青岛市资源化学与新材料研究中心山东青岛266000 中国兵器科学研究院宁波分院浙江宁波315103

采用高能喷丸强化(HESP)对医用钛合金进行了表面处理,并采用SEM、AFM、TEM和微米压痕对处理过程的微观组织演变及其微观力学性能进行了研究。结果表明,经过HESP处理,在材料表面形成了梯度组织,并且材料表面粗糙度随着冲击时间的增加而... 详细信息

采用高能喷丸强化(HESP)对医用钛合金进行了表面处理,并采用SEM、AFM、TEM和微米压痕对处理过程的微观组织演变及其微观力学性能进行了研究。结果表明,经过HESP处理,在材料表面形成了梯度组织,并且材料表面粗糙度随着冲击时间的增加而先增加后降低,逐渐趋于稳定;TEM分析显示材料表面经过处理形成了纳米晶。通过微米压痕分析发现,强化后的样品弹性模量随加工时间的增加而减小,最小值出现在处理60 min的表面位置,约为59.026 GPa,相对于未处理样品下降了15.78%,且随着喷丸时间的增加,屈服强度和应变硬化指数逐渐增加。

关键词：钛合金高能喷丸表面纳米晶化微压痕测试

我国省级研学旅行政策的时间演进和空间差异研究

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生产力研究 2024年第6期 6-14页

作者：周洪波柴焰张杨山西旅游职业学院山西太原030031 东北财经大学旅游与酒店管理学院辽宁大连116025 中国旅游研究院(文化和旅游部数据中心) 北京100005

政策是研学旅行发展的催化剂,对研学旅行的发展起到引领和保障作用,而省级研学政策是导致各地研学旅行发展差异的重要原因。文章以省级研学旅行综合性政策为样本,使用Nvivo 12 Plus对政策内容进行分析,分别从政策文本概况和“政策工具类... 详细信息

政策是研学旅行发展的催化剂,对研学旅行的发展起到引领和保障作用,而省级研学政策是导致各地研学旅行发展差异的重要原因。文章以省级研学旅行综合性政策为样本,使用Nvivo 12 Plus对政策内容进行分析,分别从政策文本概况和“政策工具类型-政策执行主体-政策作用领域”的三维分析框架研究省级研学政策的时间演进和空间差异,为研学旅行的发展提供有益启示。总体看,省级研学政策对研学旅行含义的规定在不断演化和拓展,各省份对教育部等11部门《意见》的响应存在多重差异,呈现“试点探索-释放需求-扩大供给-规范行业”渐进式演进逻辑并具有三维不均衡性。未来研学旅行相关政策制定要加强系统性、科学性、协同性、创新性,加强政策评估和研学旅行评价。

关键词：省级研学旅行政策政策三维分析时间演进空间差异

Simulation research on control algorithm of differential pressure casting process

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China Foundry 2009年第3期6卷 202-207页

作者： chai yan Jie Wanqi yang Bo School of Materials Science and Engineering Northwestern Polytechnical UniversityXi''an 710072China School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi''an 710072China The Second Artillery Engineering CollegeXi''an 710025China

To improve the precision of the filling pressure curve of differential pressure casting controlled with PID controller,the model of differential pressure casting process is established and two pressure-difference control systems using PID algorithm and Dahlin algorithm are separately designed in MATLAB. The scheduled pressure curves controlled with PID algorithm and Dahlin algorithm,respectively,are comparatively simulated in MATLAB. The simulated pressure curves obtained show that the control precision with Dahlin algorithm is higher than that with PID algorithm in the differential pressure casting process,and it was further verified by production practice.

关键词： differential pressure casting control algorithm PID Dahlin MATLAB simulation

Generalized Lagrangian Duality in Set-valued Vector Optimization via Abstract Subdifferential

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Acta Mathematicae Applicatae Sinica 2022年第2期38卷 337-351页

作者： yan-fei chai San-yang LIU Si-qi WANG Department of Mathematics Xi'an Polytechnic UniversityXi'an 710048China School of Mathematics and Statistics Xidian UniversityXi'an 710071China College of Transportation Engineering Chang'an UniversityXi'an 710064China

In this paper,we investigate dual problems for nonconvex set-valued vector optimization via abstract *** first introduce a generalized augmented Lagrangian function induced by a coupling vector-valued function for set-valued vector optimization problem and construct related set-valued dual map and dual optimization problem on the basic of weak efficiency,which used by the concepts of supremum and infimum of a *** then establish the weak and strong duality results under this augmented Lagrangian and present sufficient conditions for exact penalization via an abstract subdifferential of the object ***,we define the sub-optimal path related to the dual problem and show that every cluster point of this sub-optimal path is a primal optimal solution of the object optimization *** addition,we consider a generalized vector variational inequality as an application of abstract subdifferential.

关键词： Nonconvex set-valued vector optimization abstract subdifferential generalized augmented Lagrangian duality exact penalization sub-optimal path

Towards Data-Driving Multi-View Evaluation Framework for Scratch

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Tsinghua Science and Technology 2024年第2期29卷 517-528页

作者： Xiaolin chai yan Sun yan Gao Department of Computer Science Beijing University of Posts and TelecommunicationBeijing 100876China Intellectual Property Institute Shandong Polytechnic CollegeJining 272067China

As one of the most popular visual programming languages,Scratch has a lot of evaluation around *** evaluation can help programmers understand their projects *** the same time,it can also provide a reference for them to browse other projects in the online *** of the existing evaluations on Scratch are carried from three perspectives:Computational Thinking(CT)ability,visual presentation aesthetics,and code *** them,the assessment of CT and code quality is mainly carried out from the program script,while the evaluation of visual aesthetics is analyzed from the perspective of image sequences generated by project *** single-view evaluation focuses on the performance of a program in a certain aspect and is *** this paper,we propose a multi-view evaluation framework to integrate various evaluations using different *** quantitatively analyze the assessment of different views driven by *** with overall evaluations that represent human opinions,we analyze their differences and *** experiments,we determine the weights of different integration policies,the proposed multi-view evaluation method can generate evaluation results similar to human opinions.

关键词： Scratch Computational Thinking(CT) visual aesthetic static analysis integration policy machine learning