《欢迎进入青海大学图书馆网络资源数据库.ppt》由会员分享,可在线阅读,更多相关《欢迎进入青海大学图书馆网络资源数据库.ppt(12页珍藏版)》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、欢迎进入青海大学图书馆网络资源数据库下面一起先来了解一下EBSCOhost,以及其检索过程首先我们一起来了解首先我们一起来了解EBSOhost数据库:数据库:EBSCOhost是美国是美国EBSCO公司为数据库检索设公司为数据库检索设计的系统,有近计的系统,有近60个数据库,其中全文数据库个数据库,其中全文数据库10余个。余个。用户进入用户进入EBSCOhost系统平台后,系统平台后,先要选择检索平台,因为系统升级后,加强了对先要选择检索平台,因为系统升级后,加强了对商业数据库检索功能,增加了商业检索平台商业数据库检索功能,增加了商业检索平台(Business Searching Interf
2、ace,BSI)。通)。通过这个平台,用户可检索和浏览国家经济报告、过这个平台,用户可检索和浏览国家经济报告、公司概况、工业信息和市场研究报告,以及杂志、公司概况、工业信息和市场研究报告,以及杂志、图书等文献信息。这个平台只是适用于图书等文献信息。这个平台只是适用于BSP数据数据库。而库。而EBSCOhost Web检索平台下可以对所有检索平台下可以对所有数据库实施检索。数据库实施检索。检索过程点击这里进入图书馆主页青海大学图书馆主页单击这里进入EBSCO平台ebsco平台goldlibnArchivist of icen Jascha Hoffman nJournal name:nNatur
3、enVolume:n489,nPages:n206207nDate published:n(13 September 2012)nDOI:ndoi:10.1038/489206anPublished onlinen12 September 2012 nFor six years,photographer James Balog has trained his lens on ice,capturing time-lapse images that have helped scientists to study how glaciers and ice sheets respond to cli
4、mate conditions.With the documentary Chasing Ice soon to debut in US cinemas,Balog talks about the loss of landscapes.nChasing IcenJeff Orlowski:2012 nArticle toolsnPrintnEmailnDownload PDFnDownload citationnOrder reprintsnRights and permissionsnShare/bookmarknConnoteanCite U LikenFacebooknTwitternD
5、eliciousnDiggnGoogle+nLinkedInnRedditnStumbleUponnWhy are you interested in frozen landscapes?nWhen I was six years old,I had to walk home from school in a heavy snowstorm.It was a great contest between myself and nature.As a young man,I started ice climbing and mountaineering in the White Mountains
6、 in New Hampshire.When I looked at photographs of glaciers in Alaska I knew I wanted to spend time there.nWhen did you start photographing glaciers in time lapse?nAfter being blown away by the glacial retreat I saw while shooting a National Geographic cover story,The big thaw,in 2006.The next year I
7、 created the Extreme Ice Survey,deploying time-lapse cameras to monitor retreating ice in the Arctic and mountain areas,some so remote that our team was probably the first to visit them.Temperatures could reach 40 C and the winds 150 miles per hour.We had to tackle deep snow,torrential rain and fall
8、ing rocks.Off-the-shelf gear wasnt robust enough,and it took six months of experimenting to come up with a reliable time-lapse system.Right now,we have 27 such cameras at 18 glaciers in Alaska,Greenland,Iceland,the Rocky Mountains and at Mount Everest.Shooting every half-hour of daylight year-round,
9、each one generates 8,500 frames per year.The footage provides scientists with information on the mechanics of glacial melting and gives the public evidence of how rapidly Earths climate is changing.nPHOTO:J.ORLOWSKI/EXTREME ICE SURVEYnJames Balog has developed new photographic equipment to monitor c
10、hanges in glaciers such as the Ilulissat in Greenland.nWhat is the most dramatic moment youve caught?nEvery year there are calving events in which ice falls off glaciers into the sea.The rate of ice loss in Greenland has doubled during the past 20 years,and this summer weve seen unprecedented rates
11、of surface melting.We expected the Ilulissat Glacier on the west coast of Greenland to have a massive discharge of ice,so in summer 2008 two of my team members stood watch for weeks.They caught the biggest calving event ever recorded on film.It was as if the entire lower tip of Manhattan had broken
12、off and fallen into the ocean,like an urban skyline toppling,with skyscraper-sized blocks of ice submerging and resurfacing.nWhats the aim of the Extreme Ice Survey?nThe problem of climate change is perception.Human brains and our economic system favour the status quo.We aim to collect powerful visu
13、al evidence so that people can understand whats really happening.When satellites capture retreating glaciers from hundreds of kilometres away,the images may be beautiful but theyre removed from human experience.We live on the ground.Retreating glaciers are where you can see climate change as it happ
14、ens.nWhat have scientists learned from your images?nILLUSTRATION:N.HIGGINSnJames Balog追冰淇淋杰夫奥罗拉斯基:2012是你感兴趣的冷冻景观?我六岁的时候,我不得不在沉重的暴风雪中步行从学校回家。这是一个伟大的比赛,对于我的性质来说。作为一个年轻的男子,我开始攀冰和登山在白山新罕布什尔。当我看着照片的冰川在阿拉斯加我知道我想要花时间。你什么时候开始拍摄的冰川在时间流逝?后被吹走的冰川退缩而我看到一个美国国家地理杂志拍摄封面故事,“大融化,在2006。明年我创建的极端冰调查,部署时移摄影机监视退冰在北极和高山地区
15、,有些遥远,我们可能是第一次拜访他们。温度可以达到40,风速150英里每小时。我们不得不应对深雪,暴雨。当你开始拍摄的冰川在时间流逝?后被吹走的冰川退缩而我看到一个美国国家地理杂志拍摄封面故事,“大融化,在2006。明年我创建的极端冰调查,部署时移摄影机监视退冰在北极和高山地区,有些遥远,我们可能是第一次拜访他们。温度可以达到40,风速150英里每小时。我们不得不应对深雪,暴雨和落下的岩石。现成的齿轮不足够强大,并花了六个月的实验,想出了一个可靠的延时系统。现在,我们有27个这样的相机18冰川在格陵兰,阿拉斯加,冰岛,洛矶山和珠峰。拍摄每半小时日光全年,每个人每年产生8500帧。画面为科学家提
16、供信息的力学冰川融化了公共的证据如何迅速地球的气候姆斯式已制定了新的摄影设备监测冰川变化如伊卢利萨特在格陵兰。什么是最戏剧性的一刻你得了?每年都有产仔的事件中,冰下的海洋冰川。冰的损失率在格陵兰增加了一倍,在过去的20年里,这个夏天我们看到前所未有的速度融化。我们预计伊卢利萨特冰川在格陵兰西海岸有大量排放的冰,所以夏天2008我的团队成员站看周。他们发现最大的产仔事件都记录在胶片上。这是因为如果整个南端曼哈顿断绝落入大海,像一个城市天际线与倾倒,skyscraper-sized块冰淹没和重。目的是什么的极端冰调查?气候变化问题的看法。人类的大脑和经济制度有利于维持现状。我们的目标是收集证据,强
17、大的视觉你如何基金的冰调查?一个重要的部分我们的初始资金从远征理事会在美国国家地理杂志。尼康给我们的硬件。通过与科学家,我们得到帮助从美国国家科学基金会和美国宇航局。但大部分的资金在过去五年中已经从私人捐助者。它是一个荒谬的高难度项目的运行没有“大科学”government-scale资金和后勤支持。你有科学背景?我的主人在地貌学研究,我州的大汤普森河洪水1976。但我不敢称自己是一个科学家。当我完成我的论文,我记得看一堆马尼拉punchcards和决定,我宁愿看世界,通过一个摄像头通过数据分析。这些数据是非常重要的,但我的要求是了解世界的艺术。下一步呢?潜在的主题,我的工作是人类的需要和自然之间的碰撞。我想去欢迎查阅谢谢大家!