浅谈初中信息技术课教学模式和方法

初中计算机教学主要目的是激发学生学习和使用计算机的兴趣,巩固学生学习计算机的热情,让学生初步掌握计算机的基本操作技能并应用于实践,注重培养学生的信息素质和创新思维以及自学能力,为达此目的在教学中应根据学生实况采取灵活多样的教学模式和方法。     

浅谈多媒体在高中数学教学中的合理应用

教师运用现代多媒体信息技术对教学活动进行创造性设计,发挥计算机辅助教学的特有功能,把信息技术和数学教学的学科特点结合起来,可以使教学的表现形式更加形象化、多样化、直观化,有利于充分揭示数学概念的形成与发展,数学思维的过程和实质,展示数学思维的形成过程,使数学课堂教学收到事半功倍的效果。     

The early neolithic pottery of the volga-ural region (based on the materials of the elshanka culture)

This article deals with the technologies of pottery-making used by the population of the Volga-Ural region during the Early Neolithic. The analyzed assemblage includes 344 specimens of ceramics (conventionally regarded as separate vessels) from 12 sites of the Elshanka culture (end of the 7th–6th millennium BC). The research method elaborated by A.A. Bobrinsky is based on binocular microscopy, use-wear analysis, and physical modeling. The origins and evolution of the Early Neolithic ceramic traditions in the Volga-Ural region and the role of their admixture are discussed.     

Technical aspects of a worked proboscidean tusk from Inmachuk River,Seward Peninsula,Alaska

Prehistoric reduction sequences of proboscidean ivory have been described and discussed within the Russian and European Upper Paleolithic archaeological literature. A culturally modified proboscidean tusk (Mammuthus sp.) in Seward Peninsula, northwestern Alaska, displays longitudinal grooving, providing an insight into a reduction technique rarely described within North American archaeological literature. Similar reduction sequences have been described for the production of bone, antler and walrus ivory artifacts in the North American prehistoric record; however, examples on proboscidean ivory are extremely rare.     

工业化时期英国城市环境问题及其成因

工业化时期,英国城市环境问题主要表现为:极其恶劣的居住环境,不容忽视的大气污染,日益严峻的河流污染,这些对英国社会造成持久而深远的危害。城市环境问题的产生,除了受工业化时期的技术制约以外,还与当时人们对环境污染的漠视态度以及“自由放任”的工业化模式有关。英国在城市环境问题方面经历的教训,为后发展国家提供了前车之鉴。     

近十年国外旅行社信息化研究述评

信息技术使游客的旅游需求和消费行为发生了重大的变化,旅行社必须进行信息化建设才能应对这一变化.本文运用文献分析法对近10年国外旅行社信息化的相关研究成果进行了梳理,从旅行社信息化的动因、旅行社信息化的方式和旅行社信息化的效应3个维度归纳了一些有价值的共识,并指出旅行社信息化未来的研究方向.本文旨在理论层面丰富该领域的现有文献,补充与发展该领域的理论与研究;在实践层面为中国旅行社的信息化建设提供借鉴与思路.     

时空间行为调查的回顾与未来展望

随着理论与方法体系不断完善,时空间行为研究近年来越来越重视实践应用导向,同时也面临构建解释时空间行为的一般理论的使命,对研究数据提出了新的要求.本文回顾时空间行为调查的进展,认为时空间行为调查在方法上与移动定位技术的结合日益密切,数据质量得到较大提升;在内容上越来越重视个体行为的能动性以及行为的社会、环境意义.在此基础...     

基于Remake的三维建模技术在摩崖石刻数字化重建中的应用

由于长期暴露于自然环境中,许多摩崖石刻在日晒雨淋、风沙磨蚀等多种因素作用下不断风化,前景堪忧。因此,当务之急是采取有效的措施保护和保存这类珍贵的文化遗产。数字化三维重建技术能够完整地保存石刻现状,为日后的维护、修复和学术研究提供真实、详尽的科学依据。基于Remake三维建模技术的方法与特点,本工作探讨该技术在摩崖石刻数字化重建中的应用。以广西桂林"桂海碑林"内的石刻为研究对象,运用Remake软件对数字相机获取的数字影像进行处理,对摩崖石刻进行快速精确的逆向建模。同时,将三维扫描仪获取的点云数据与本研究获取的模型数据进行同名点精度检测,分析Remake三维重建的精度。三维模型数据可以作为数字档案进行存档和展示,加强对摩崖石刻类文物的保护措施,具有重要的意义。     

旅游意象塑造的操作指向论析——旅游文化设计探索

旅游意象具有形神兼备的特征,是外在的“象”与内在的“意”之结合体。因此,区域旅游意象的塑造,需要在问题诊断、地脉和文脉阐释基础之上,针对市场需求,依据对资源属性的认识,提炼出相应的意蕴内核,然后由内而外,构筑相应的产品和项目系统。作为旅游文化设计的一种探索,本文结合永康市、南通市以及洪泽县的实际,从理论和实践的结合上对旅游意象定位操作过程进行细化分析,希冀借此引发更多的思考。     

Reforming China’s polar science and technology system

ABSTRACT

Along with its modernization process, China has developed many interests in polar ecology and has connected the significance of the Antarctic and Arctic to its national interests. We present an in-depth analysis and assessment of the state of the art of China’s polar research from following points of view, mechanism of policy making on polar affairs, science diplomacy and polar governance, on-spot research expedition management, allocation of scientific funds, forming polar scientific team, especially on the management system of CHINARE. From an integrated perspective of social and natural sciences, we present a vision for future reform and development of polar affairs of China: to establish a macro and long term policy for the polar regions, to promote and establish a government-led, diversified polar scientific management system, to establish a reasonable and rule based evaluation system, to train, stabilize and expand polar scientific research teams, and to attract and encourage talents for polar science communication.