圆钢矫直机轧辊曲面的设计

以轧辊曲面为研究对象,分别运用图解法和解析法求解轧辊曲面的接触线和曲面轮廓线,并可用计算机计算出结果或输出图形,以满足实际生产需要.     

The eye-mind of processing written feedback: Unraveling how students read and use feedback for revision

This research aims to promote our understanding of feedback engagement processes in writing tasks using a combination of online and offline measures, including eye-tracking, thinking-aloud, and text-analyses. Study 1 explored how sixteen students read, evaluate, and use feedback for revision. Results revealed three feedback processing strategies: (1) superficial processing (n = 6), which is characterized by reading feedback in a linear way, without critically rereading or revising the text, (2) local processing (n = 6) in which students switched between reading the comments and the commented text, and (3) deep processing (n = 4) in which students integrated the feedback with both commented and uncommented parts of the text and made more substantial revisions. In Study 2, we investigated the local and deep feedback reading strategy in more detail with 41 students using a within-subject design with different types of feedback. Results demonstrated the same strategies among students, but also that the focus of feedback affected students' revision behavior, above and beyond an individual feedback processing strategy. This finding is in line with previous research that emphasized the effects of feedback characteristics on students’ use of feedback. By triangulating various process measures, this research is one of the first that provides empirical evidence for different feedback processing strategies among students. These novel insights in individual feedback engagement processing can be used to extend and refine current theories on how, when, and why feedback works and for whom.     

Eye tracking technology to audit google analytics: Analysing digital consumer shopping journey in fashion m-retail

Rapid changes in digital consumer behaviour, influenced by exponential adoption of smartphones, require timely and sophisticated responses from retailers to these consumer needs. With a growing amount of big data available, fashion retailers need to innovate and develop more sophisticated analytics for new consumer behaviours such as m-commerce. This research has considered how Google Analytics data can be applied to develop customer journey maps to understand digital consumer behaviour. A multi-method research design was used, incorporating an innovative mobile eye tracking technology and mobile fashion consumer data from Google Analytics. Digital customers’ shopping journeys on the fashion retailer’s website were mapped using data sourced from eye tracking and Google Analytics, gathered in parallel. The comparison of these shopping journeys allowed a critical evaluation of the precision and usefulness of the Google Analytics database. Google Analytics tracked only half of the digital users’ activities, whereas eye tracking data documented digital consumers’ interaction with all elements of the fashion retailer’s website. The conclusion reached is that eye tracking can be used to audit the Google Analytics database for potential gaps in data and also to inform and improve marketing decision-making.     

Eye-movement parameters and reading speed

This study addressed the relationship between four eyemovement parameters and reading speed of 20twelve-year-old children during silent and oralreading. The results indicated that each of theparameters correlated significantly with speed ofsilent reading. In fact, reading speed could bepredicted by the following variables: recognitionspan, average fixation duration, and number ofregressive saccades. Moreover, the relationshipbetween silent and oral reading speed, on one hand,and between reading fluency and reading errors in oralreading speed, on the other, was examined. The resultsindicated that in terms of reading speed, significantinterrelationships existed between silent and oralreading. Furthermore, fluency and errors wereintercorrelated phenomena, but only fluency wassubstantially related to oral reading speed.     

Aggregate gradation design of asphalt mixture with stone-to-stone contact based on fuller＇s model

Based on Fuller＇s model, a gradation design is presented for the load-carrying capacity of an asphalt mixture with stone-to-stone contact. The coarse aggregate gradation, fine aggregate and filler gradation are respectively designed for their different effects on an asphalt mixture with stone-to-stone contact. The equation of coarse aggregate gradation is deduced from the Fuller＇s model. Fine aggregate gradation is calculated by using Fuller＇s equation. The asphalt mixture with the 16 mm maximum size of aggregate is verified. When the coefficient of coarse aggregate gradation is 0.35 and fine aggregate gradation is 0.25, the volume parameters of asphalt mixture meet the technical specifications. Moreover, the high temperature stability and crack resistance at low temperature are all well.     

What makes a skilled writer? Working memory and audience awareness during text composition

This study investigated the role of working memory capacity as a factor for individual differences in the ability to compose a text with communicative efficiency based on audience awareness. We analyzed its differential effects on the dynamics of the writing processes, as well as on the content of the finished product. Twenty-five graduate students composed a procedural text explaining how to assemble a model turbine. They were free to consult a documentary source, featuring captioned pictures of turbine parts and assembly steps, at any time. Graphomotor and eye movements were recorded using ‘Eye and Pen’ software with an eye-tracker and digitizing tablet. Results showed that high WM capacity writers used a different strategy to explore the visual source, making longer writing pauses and producing more detailed procedures, and achieved the communicative goal more efficiently, by introducing more reader supports. In conclusion, we discuss the feasibility of audience awareness training.     

电气化铁路接触网绝缘性能的实践研究

结合同煤集团四台沟电气化铁路110 kv牵引变电所及接触网供电设备故障跳闸率对煤矿电气化铁路定量装车点的接触网设备结构及污染情况进行了系统分析,研究出了提高重污区接触网设备绝缘性能的技改方法,并附注实践取得了良好的效果。     

当前市(以上)人大代表联系群众的途径及意义探析

密切联系群众是中国共产党永恒的主题,是时代赋予人大代表的神圣职责。人大代表联系群众,无论是对人大代表、人民代表大会制度、人民群众,还是对我党,都是件幸事。它对完善人民代表大会制度、发挥人大代表作用、维护与实现群众利益、解决群众实际问题、调动群众参与管理国家和社会事务的积极性和主动性等方面都具有重要意义。新形势下,市(以上)人大代表密切联系群众,不仅要努力拓宽联系渠道和途径,还应提升代表联系群众的实效性,以保障其代表人民的利益和意志,反映群众的意见和诉求。     

空间太阳望远镜中摆镜支架装夹变形的研究

空间太阳望远镜上的自适应光学摆镜要求具有高形面精度、高机械谐振频率,由于机械接口原因,只有通过连接支架才能装夹于摆镜平台。该支架结构直接影响摆镜的形面精度以及整个系统的机械谐振频率。运用接触非线性有限元技术,对四种不同结构的支架在螺栓装夹力作用下的变形进行详细计算,分析螺栓压力、螺栓压力差、重力以及螺栓垫片材料等因素对不同结构支架变形影响,为摆镜的装夹实验提供理论依据。     

沟通汉语与汉藏语之间的研究——首届中国语言及方言语言接触问题学术研讨会综述

语言接触是语言研究不可回避的重要课题,汉语研究必须注重与汉藏语研究的联系。文章从"语言之间的接触","方言之间、方言与少数民族语言、方言与外来语的接触","汉语与少数民族语言、少数民族语言之间的接触","历史层次分析"四个方面对首届中国语言及方言语言接触问题学术研讨会进行了综述。