烟斗

道先生开的铺子,远邻近舍,家家熟知。这家小店,出售各种各样的零星百货,老老少少,都来光顾,选购各自所需的用品。货架和店柜上的商品,琳琅满目,美不胜收。小乔伊每天放学以后,就逛进这家小店东张西望。他爱看那些烟斗,其中有一只特别惹他注目。每当他回家路过这里,总要盯它一阵,而且一见了它就目不转睛,心想:“总有那么一天,我会长大成人,可以抽抽烟斗,就像这只。”他记不起父亲是啥模样,但是他知道父亲准是抽烟斗的。小乔伊伸出手去摸了摸那只烟斗,又用一根手指在烟斗杆上轻轻地摩挲(māsā)着。他老是在想:他长大了,就可以去工作,他的母亲…     

琴声

松树在它的绿房子里,放了一把竖琴,一把金色的竖琴。别人都看不见,只有风看见了,乱弹几下琴弦,给竖起耳朵的野兔听。琴声!美@艾琳·费雪 @王世跃     

Introducing computer literacy skills for physicians

Computers are integral to medical practice, education, and research. While medical students learn computer skills during their training, many practicing physicians do not have the same computer experience. To familiarize this group with the exciting developments in medical informatics, the Himmelfarb Health Sciences Library and Department of Computer Medicine at the George Washington University Medical Center organized a workshop "Introducing Your Office Computer!" for attending physicians. The workshop featured a short lecture/video presentation on computer applications in medicine followed by a "computer fair" of five computer applications. Eleven physicians attended the workshop. Feedback was very positive; many called later to request more detailed instructions on using the programs demonstrated. It was a valuable experience for the staff, and new bridges were built between departments and clients.     

Advances in the phylogenesis of Agaricales and its higher ranks and strategies for establishing phylogenetic hypotheses

We present an overview of previous research results on the molecular phylogenetic analyses in Agaricales and its higher ranks (Agaricomycetes/Agaricomycotina/Basidiomycota) along with the most recent treatments of taxonomic systems in these taxa. Establishing phylogenetic hypotheses using DNA sequences, from which an understanding of the natural evolutionary relationships amongst clades may be derived, requires a robust dataset. It has been recognized that single-gene phylogenies may not truly represent organismal phylogenies, but the concordant phylogenetic genealogies from multiple-gene datasets can resolve this problem. The genes commonly used in mushroom phylogenetic research are summarized.     

20世纪鞋子的简史

我们脚上穿的鞋子,是压抑、痛苦、美丽、创造力的载体,在很大程度上暴露了我们的性格以及对生活的态度。鞋子的演变和社会文化、性别、财富、地位的发展息息相关,并呈现出一些美好奇妙的时尚潮流。本书娓娓道来鞋履发展历史,体现了女性过去、现在、以及将来是如何逐步被鞋履塑造的。     

41号和43号总统

多萝·布什为其父——美国前总统老布什撰写的传记《我的父亲 我的总统》,堪称迄今首部完整的老布什传,亦是第一幅色彩层次丰富的老布什肖像画。这本书也像一条河,涌动着布什家族许多鲜为人知的个人经历与家庭往事。     

图书馆学实验方法研究

<正> 一、基本概念"实验"可以定义为研究者对起重要作用的条件加以精确地说明和控制的一种研究方式.改变一个或多个自变量的值,观察这种变化对于一个或多个实验组的各个因变量值的影响.而其它可能与研究课题有关的(即影响因变量的值)因素,则通过精密的实验将其限制在最小程度.这样,通过控制实验的条件,研究假设的基本要求就得到满足.在图书馆学方面,实验方法可以用于鉴定那些有关图书馆藏书建设,藏书保管和藏书利用等方面的新技术,说明那些定义不准