财政补贴、融资约束与高端装备制造企业研发投入

选取2010-2017年我国高端装备制造业上市公司的微观数据,考察财政补贴、融资约束与企业研发投入之间的关系。研究结果表明:财政补贴对高端装备制造企业的研发投入强度具有显著的促进作用,且这种促进作用在国有企业、年轻型企业和成长型企业中更明显;而融资约束不仅直接对高端装备制造企业的研发投入强度产生抑制作用,还抑制财政补贴对高端装备制造企业研发投入的促进作用,且非国有企业、年轻型企业和成长型企业受到的抑制作用更强。为此,提出政府加大研发补贴力度,引导企业和社会资本投入到研发创新活动中,加快优化企业的融资结构、规范信息披露行为,以及有针对性地制定和调整相关补贴政策等对策建议。     

电子商务最后一公里配送的收货模式研究

随着电子商务的飞速发展,电子商务最后一公里配送收货模式逐渐成为影响消费者网购体验的关键因素。在分析了目前国内外电子商务最后一公里配送的收货模式后,从技术层面、市场需求和投资回报三个方面深入比较了七种具体收货模式在国内电子商务最后一公里配送中应用的可行性;最后,给出了七种收货模式的得分排序,并预测出电子商务最后一公里配送的收货模式在国内的发展趋势。     

谈图赫鲁·帖木儿汗在新疆历史上的地位

本文首先简单的陈述了图赫鲁·帖木儿汗的生活活动。然后进一步阐述了当他坐上皇帝宝座之后促使新疆的蒙古人信仰伊斯兰教所起的作用。最后通过辩证唯物主义和历史唯物主义观点来探讨他在伊斯兰教在新疆的普遍传播所具有的影响。     

《白鹿原》性别政治背后的民族命运——以田小娥形象为中心

作为90年代小说的扛鼎之作,《白鹿原》对民族文化命运的思考在其塑造的诸多女性形象上亦可见出。本文以田小娥形象为中心,通过分析这一＂新＂人形象身上的传统守旧因素,辨析其中凸显的性别政治关系,认为不仅女性悲剧命运的主因是其传统的守旧性,甚至民族命运的曲折走向也可在其中寻到端倪。     

Evaluation of usage of virtual microscopy for the study of histology in the medical,dental, and veterinary undergraduate programs of a UK University

This article describes the introduction of a virtual microscope (VM) that has allowed preclinical histology teaching to be fashioned to better suit the needs of approximately 900 undergraduate students per year studying medicine, dentistry, or veterinary science at the University of Bristol, United Kingdom. Features of the VM implementation include: (1) the facility for students and teachers to make annotations on the digital slides; (2) in‐house development of VM‐based quizzes that are used for both formative and summative assessments; (3) archiving of teaching materials generated each year, enabling students to access their personalized learning resources throughout their programs; and (4) retention of light microscopy capability alongside the VM. Student feedback on the VM is particularly positive about its ease of use, the value of the annotation tool, the quizzes, and the accessibility of all components off‐campus. Analysis of login data indicates considerable, although variable, use of the VM by students outside timetabled teaching. The median number of annual logins per student account for every course exceeded the number of timetabled histology classes for that course (1.6–3.5 times). The total number of annual student logins across all cohorts increased from approximately 9,000 in the year 2007–2008 to 22,000 in the year 2010–2011. The implementation of the VM has improved teaching and learning in practical classes within the histology laboratory and facilitated consolidation and revision of material outside the laboratory. Discussion is provided of some novel strategies that capitalize on the benefits of introducing a VM, as well as strategies adopted to overcome some potential challenges. Anat Sci Educ 7: 389–398. © 2013 American Association of Anatomists.     

An enriched multimedia eBook application to facilitate learning of anatomy

This pilot study compared the use of an enriched multimedia eBook with traditional methods for teaching the gross anatomy of the heart and great vessels. Seventy‐one first‐year students from an Australian medical school participated in the study. Students' abilities were examined by pretest, intervention, and post‐test measurements. Perceptions and attitudes toward eBook technology were examined by survey questions. Results indicated a strongly positive user experience coupled with increased marks; however, there were no statistically significant results for the eBook method of delivery alone outperforming the traditional anatomy practical session. Results did show a statistically significant difference in the final marks achieved based on the sequencing of the learning modalities. With initial interaction with the multimedia content followed by active experimentation in the anatomy lab, students' performance was improved in the final test. Obtained data support the role of eBook technology in modern anatomy curriculum being a useful adjunct to traditional methods. Further study is needed to investigate the importance of sequencing of teaching interventions. Anat Sci Educ. 7: 19–27. © 2013 American Association of Anatomists.     

Interactive radiological anatomy eLearning solution for first year medical students: Development,integration, and impact on learning

A technology enhanced learning and teaching (TELT) solution, radiological anatomy (RA) eLearning, composed of a range of identification‐based and guided learning activities related to normal and pathological X‐ray images, was devised for the Year 1 nervous and locomotor course at the Faculty of Medicine, University of Southampton. Its effectiveness was evaluated using a questionnaire, pre‐ and post‐tests, focus groups, summative assessment, and tracking data. Since introduced in 2009, a total of 781 students have used RA eLearning, and among them 167 Year 1 students in 2011, of whom 116 participated in the evaluation study. Students enjoyed learning (77%) with RA eLearning, found it was easy to use (81%) and actively engaged them in their learning (75%), all of which were associated to the usability, learning design of the TELT solution and its integration in the curriculum; 80% of students reported RA eLearning helped their revision of anatomy and 69% stated that it facilitated their application of anatomy in a clinical context, both of which were associated with the benefits offered by the learning and activities design. At the end of course summative assessment, student knowledge of RA eLearning relevant topics (mean 80%; SD ±16) was significantly better as compared to topics not relevant to RA eLearning (mean 63%; SD ±15) (mean difference 18%; 95% CI 15% to 20%; P < 0.001). A well designed and integrated TELT solution can be an efficient method for facilitating the application, integration, and contextualization of anatomy and radiology to create a blended learning environment. Anat Sci Educ 7: 350–360. © 2013 American Association of Anatomists.     

首要教学原理

首要教学原理是从一组有效教学的原理和模式中提炼出来的,具体是指聚焦问题或者面向任务开展教学,并以此经历激活旧知、示证新知、应用新知和融会贯通的教学循环圈。首要教学原理中各项要求如果能够一一得到落实,那么,教学策略的效能水平肯定也会逐渐得以提高。在解决复杂问题时,首要教学原理对学业表现的促进作用才得以凸显。     

基于NDVI的内蒙古植被动态变化分析

植被对于生态环境变化的反应是较为敏感的,研究植被动态变化对生态环境的保护和生态预警有很大的意义.基于SPOT/VEGETATION NDVI数据,该文获得了内蒙古的空间NDVI分布,分析了自1998年至2008年之间NDVI的变化趋势.并由最大值合成法（MVC）,Mann-Kendall检验和Rescaled范围（R/S）分析计算出NDVI时间序列的赫斯特指数.此外,通过叠加分析对研究区域NDVI的未来变化趋势进行判断.主要的研究结果包括：第一,1998年到2008年间,内蒙古的植被变化总体上是稳定的,但数据显示10.16%的植被有显著减少的趋势,它们属于脆弱的草原植被;其次,在空间分布方面,NDVI时间序列存在一定规律,赫斯特指数在西部高,东部低;第三,在低植被覆盖区存在植被减少的现象.其中9.58%的土地开始衰退,这些土壤急切的需要植被的保护和综合的管理.没有人类的干预,这些土地将会出现荒漠化.     

二维动画设计中的碰撞检测算法

介绍了计算机图形学中两种应用广泛的碰撞检测技术,分析了Flash提供的三种碰撞检测方法,并提出了两种新的自定义碰撞检测算法,最后通过一个射击游戏的小实验,对文中的5种碰撞检测算法从实时性、精确性、适应性和可操作性等方面进行了比较。实验结果表明,提出的算法能够满足碰撞检测的要求。