谈大学生论文写作

大学生写作论文需要培养积极健康的写作心理。初学论文写作,可以借助“纵横扫描法”、“KJ”法、“信息交合论”等方法解决选题定题、立论取材方面的困难。论文写作的语言运用切忌沾染玩弄词藻的不良风气。     

基于数字化扫描的虚拟人建模合成技术研究

在数字化扫描技术支持下,虚拟人技术得到了进一步发展,被广泛应用于各行各业。对数字化扫描技术、扫描原理、虚拟人技术及基于数字化扫描技术的建模方式进行分析,通过手部建模实例,利用PolyWorks软件,以数据获取、模型拼接、空洞修补3个步骤为主介绍了虚拟人手部建模的具体流程。相较于传统方法,该方法可以在少量样本的情况下,得到更逼真的人体模型,使虚拟人技术在医学手术、影视动画、游戏设计等领域的应用更接近于真实情境。     

基于遗传算法的PCB互连测试矢量生成研究与实现

对运用遗传算法来生成PCB和MCM互连测试矢量集这一过程进行了研究，并对编码策略、目标函数等问题进行了讨论，提出了故障模拟方案，得出一种高效混合并行遗传算法，最后还通过实验验证了该方法比一般算法更有效。     

激光电视扫描系统实现技术的研究

激光电视技术是新兴的彩色电视显示技术之一。本文分析了半导体激光电视扫描部分的工作原理,阐述了用永磁无刷直流电机带动转镜进行行扫描和用步进电机带动振镜进行场扫描的原理及其参数的选择,并对实际运行结果进行了分析。     

Effective Use of 3S Strategies to Promote Reading Comprehension

This article intends to shed some light on effective use of three reading strategies: skimming, scanning and studying for non -English -speaking middle school students. The article also presents some advice for the teacher's consideration when designing and preparing reading materials.     

激光扫瞄共聚焦显微技术实验教学的思考

开设激光共聚焦技术实验课，通过仪器演示和实验操作，帮助学生理解课堂的理论教学内容，了解和掌握这门新技术，为他们在未来科研工作中利用该技术进行科学研究奠定基础。     

田径运动员形态选材指标及方法的研究进展

随着现代生活水平日益提高,营养条件逐渐加强,人们身体形态和身体素质也逐步发生较大改变,由于训练水平的不断发展和提高,田径运动员身材较过去相比愈加日趋高大化,与此同时,人们对田径运动员形态选材的指标和方法的研究也取得了相应的发展。对于田径运动员形态选材指标及方法的研究,在中国具有＂起步晚,发展快＂的特点,已具备较雄厚理论研究的基础。随着三维人体扫描仪在运动员形态选材中应用的研究,田径运动员形态选材指标将更加完整、准确和便于科学统计和管理。而影像技术的发展推动了田径运动员形态选材逐步进入肌肉形态研究阶段。     

中学英语阅读现状调查(英文)

从近几年的高考试卷分析来看,我们可以发现学生英语阅读能力逐年增强。然而,在这种情况下,许多教师仍然以学生的考试成绩作为唯一目标而采用传统的教学方式。这种应试现象严重地违背了新提出的学生语言运用和阅读能力的标准。因此,对英语阅读课的探索就显得尤为重要。本文根据笔者在中学实习的经验设计了行动研究方案,目的在于从中发现问题并找出解决途径。     

Deconstructing Rattan: Morphology of Biogenic Silica in Rattan and Its Impact on Preservation of Southeast Asian Art and Artifacts Made of Rattan

Rattan, a climbing palm of the tropical region of Southeast Asia (SEA), supplied material for objects of myriad purposes including ceremonial, religious, utilitarian, and artistic as exemplified by the collections at the National Museum of Singapore, Asian Civilization Museum, and the Singapore Art Museum. The aim of this analysis of rattan is to further the understanding of rattan, in particular its surface, and to propose a protocol-enabling positive identification of rattan in artifacts, thus guiding conservation decisions. The rattan surface defines an artifacts esthetic appearance and stability, and understanding its characteristics is essential to the development of an informed preservation strategy. Rattan epidermis morphology, topography, and cellular structure were characterized by a multi-scale and a multi-sensory approach using optical microscopy, confocal laser scanning microscopy, and field-emission scanning electron microscopy (FESEM). The chemical composition was analyzed with energy dispersive X-ray spectroscopy and macro-X-ray fluorescence spectroscopy (m-XRF) and indicated the presence of a siliceous compound, biogenic silica, in the epidermis and phytoliths in vascular tissue. A parallel analytical protocol was applied to samples extracted from museum artifacts (nineteenth-twentieth century) and contemporary objects acquired during field studies in Indonesia, Malaysia, Myanmar, and Cambodia. The methods of processing rattan have a direct impact on the siliceous layer thus leading to a better understanding of surface patterns found on artifacts. An attempt to find correlations between the percentage of silica and thickness of the siliceous layer did not produce conclusive results; both varied greatly in all studied examples. Darkening of rattan was clearly associated with aging but did not indicate any distinct effect on the chemical composition of the outer layer. The chemical analysis of the biogenic silica layer combined with recording methods of processing rattan observed during field studies in SEA provide a basis for a better understanding of rattan collections in the museum context.     

Somatotyping using 3D anthropometry: a cluster analysis

Abstract

Somatotyping is the quantification of human body shape, independent of body size. Hitherto, somatotyping (including the most popular method, the Heath-Carter system) has been based on subjective visual ratings, sometimes supported by surface anthropometry. This study used data derived from three-dimensional (3D) whole-body scans as inputs for cluster analysis to objectively derive clusters of similar body shapes. Twenty-nine dimensions normalised for body size were measured on a purposive sample of 301 adults aged 17–56 years who had been scanned using a Vitus Smart laser scanner. K-means Cluster Analysis with v-fold cross-validation was used to determine shape clusters. Three male and three female clusters emerged, and were visualised using those scans closest to the cluster centroid and a caricature defined by doubling the difference between the average scan and the cluster centroid. The male clusters were decidedly endomorphic (high fatness), ectomorphic (high linearity), and endo-mesomorphic (a mixture of fatness and muscularity). The female clusters were clearly endomorphic, ectomorphic, and the ecto-mesomorphic (a mixture of linearity and muscularity). An objective shape quantification procedure combining 3D scanning and cluster analysis yielded shape clusters strikingly similar to traditional somatotyping.