滚动字幕在VB中的实现

滚动字幕是电影或电视中片头和片尾经常使用的手段 .利用VB实现此类效果方便快捷 ,易于设置 .本文阐述了其原理和方法 ,并给出了两个具体示例     

一个无滑滚动的刚体加速度问题的解法

对有关参考书中的错误题解，给出了一个无滑滚动的刚体加速度问题的三种求解方法。     

本钢1700毫米宽带钢热连轧机精轧机改造技术分析

分析了本钢连轧厂七架普通四辊精轧机的改造．对所采用的工作辊弯辊装置和轧辊轴向横移装置的工作原理进行了研究，结果表明．产品板型得到控制，质量显著提高。     

冷轧板带机运行中的板形控制

分析了热轧过程、冷轧、轧机压下量均匀程度、轧辊变形、压扁量与金属恒流动等影响板材板型的主要因素；介绍了采用液压AGC系统控制板厚及板形、通过轧辊有载辊缝的控制进行板形控制、采用板形控制新技术和采用新型轧机等板形控制的途径和方法．     

科研项目滚动式进度规划研究

本文介绍了科研项目的最新特点与管理现状,针对目前存在的问题,提出了管理计划基准化的概念,以国家重点研发计划为例详细阐述了滚动式规划与数字化技术相结合的管理方法和思路。该方法通过将项目任务自上而下地按照年度进行分解,创建项目年度执行基准,在滚动周期内对组织过程资产进行阶段性固化,同时应用PDCA质量管理循环体系实现科研管理与技术研发的持续改进,从而确保年度考核指标的完成。本文利用MS Project软件在滚动式规划的基础上建立年度进度网络模型,实时跟踪与监控科研项目的进度、成本与质量,从而实现科研项目的高效、动态、精准化管理。实践证明：该方法可以有效简化流程,提高管理效率,增大项目成功率,适用于规模化、市场化、复杂化的科研项目管理,为未来科研项目管理提供借鉴。     

浅谈定轮闸门的滚动摩擦

水利水电工程中平面定轮闸门运行工况比较复杂,滚轮与门槽内的轨道之间的滚动摩擦受多个因素的影响,理解影响滚动摩擦的因素对有效设计闸门有重要的指导作用。本文介绍了滚动摩擦在定轮闸门中应用的原理并浅析了常见的失效原因和对策。     

集装箱用SPA-H耐大气腐蚀钢的开发研制

为适应集装箱用耐大气腐蚀钢的需求,近年来,本溪钢铁(集团)有限责任公司采用铁水预处理、转炉冶炼、AHF精炼、连铸、热连轧及控轧控冷等工艺成功地开发了SPA-H耐大气腐蚀钢.通过化学成分和生产工艺优化,使钢材的各项性能达到标准要求.     

Contract cheating in UK higher education: A covert investigation of essay mills

Contract cheating is currently a concern for universities and the higher education (HE) sector. It has been brought into the spotlight in recent years through the growth of online essay mills, where students can easily commission and purchase written assessment responses. This study contributes to the wider literature on academic integrity in HE by examining the phenomenon of contract cheating from a supply‐side perspective, thereby considering the essay mill offering and student interaction with it. The authors covertly engage with five essay mills, before successfully completing an assignment purchase with two of these providers. The pre‐purchase stage of an assignment transaction is first examined, unpacking ten reassurance cues used by essay mill providers in the text of their websites. These reassurance cues help to ensure the attractiveness of the essay mill product to potential student consumers. The analysis then moves to explore the ethical discourses around academic integrity that essay mills provide, revealing inconsistencies in their stance towards the potential for academic misconduct from the use of essay mill services. Finally, the article explores the quality of the essay mill product, through grading and Turnitin^® reports for the two purchased essay mill assignments. Following recent calls for the outlawing of essay mills, this article provides a timely addition to current understanding of this phenomenon, and the associated challenges of contract cheating in HE.     

Physical characteristics and resistance parameters of typical urban cyclists

This study investigates the rolling and drag resistance parameters and bicycle and cargo masses of typical urban cyclists. These factors are important for modelling of cyclist speed, power and energy expenditure, with applications including exercise performance, health and safety assessments and transportation network analysis. However, representative values for diverse urban travellers have not been established. Resistance parameters were measured utilizing a field coast-down test for 557 intercepted cyclists in Vancouver, Canada. Masses were also measured, along with other bicycle attributes such as tire pressure and size. The average (standard deviation) of coefficient of rolling resistance, effective frontal area, bicycle plus cargo mass, and bicycle-only mass were 0.0077 (0.0036), 0.559 (0.170) m², 18.3 (4.1) kg, and 13.7 (3.3) kg, respectively. The range of measured values is wider and higher than suggested in existing literature, which focusses on sport cyclists. Significant correlations are identified between resistance parameters and rider and bicycle attributes, indicating higher resistance parameters for less sport-oriented cyclists. The findings of this study are important for appropriately characterising the full range of urban cyclists, including commuters and casual riders.     

长三角滚灯艺术的历史传承与现实价值研究

文献资料法和访谈法,对以浙江海盐为中心的滚灯项目的历史流变进行了研究。滚灯项目作为非物质文化遗产,包含很多体育元素,并具有鲜明的健身功能和精神文化内涵,是一项值得推广的体育项目,对新农村体育文化建设具有积极的推动作用。