摘要：介绍了美国风景园林学科规划方面的情况,包括其起源、规划原则及其“METLAND”系统开发的风景评估方法;讨论了美国绿脉规划的发展,结合实例描述了美国绿脉规划的现状,并对美国近几年的绿脉规划作了一些重要的提议。

摘要：经常到广西省这个自然风光秀美的纯朴之地旅行，是在中国南方生活这辈子中值得珍藏的经历。早期我们的旅途依仗拖船，由岸边的矮马用绳索拖拽和船尾的踏车推进；有时部分路程需步行或是坐轿子。）现在我们乘汽艇，汽车或公车，甚至飞机来这里。

摘要：在工业中系统地应用工效学,可以提高产品质量、增强生产效率并创造出更安全的工作环境。实现这一目标的最佳途径,是减少与系统目标无关的系统功能,详细分析人们所完成的任务并使操作者真正参与设计的全过程。从制造业中选出的几个例子可以说明,人的不同特点对于不同环境中的设计工作是多么重要。

摘要：An attempt was made to optimize friction welding.parameters to attain a minimum hardness at the interface and a maximum tensile streng.h of the dissimilar joints of AISI 304 austenitic stainless steel （ASS） and copper （Cu） alloy using.response surface methodolog. （RSM）. Three-factor, five-level central composite desig. matrix was used to specify experimental conditions. Twenty joints were fabricated using.ASS and Cu alloy. Tensile streng.h and interface hardness were measured experimentally. Analysis of variance （ANOVA） method was used to find out sig.ificant main and interaction parameters and empirical relationships were developed using.reg.ession analysis. The friction welding.parameters were optimized by constructing.response g.aphs and contour plots using.desig. expert software. The developed empirical relationships can be effectively used to predict tensile streng.h and interface hardness of friction welded ASS-Cu joints at 95% confidence level. The developed contour plots can be used to attain required level of optimum conditions to join ASS-Cu alloy by friction welding.process.

摘要：引言TV—SAT/TDF—1统一推进分系统的安全分析是在以前分析的基础上再加用户的评定意见后成文的,它是分系统关键设计评审(CDR)文件的一部分(设计状态是1984年12月)。一、功能说明1.1统一推进系统(UPS)

摘要：Depositional units preserved on coastal plains worldwide control litholog.c distribution in the shallow subsurface that is critical to infrastructure desig. and construction, and are also an important repository of information about the larg.-scale climate chang. that has occurred during.many Quaternary g.acial-interg.acial cycles, The lateral and vertical litholog.c and stratig.aphic complexity of these depositional units and their response to climatic and sea-level chang. are poorly understood, making.it difficult to pre-dict litholog.c distribution and to place historical and future climate and sea-level chang. within a nat-ural g.olog.c context, Mapping.Quaternary siliciclastic depositional units on low-relief coastal plains traditionally has been based on their expression in aerial photog.aphs and low-resolution topog.aphic maps, Accuracy and detail have been hindered by low relief and lack of exposure, Hig.-resolution air- borne lidar surveys, along.with surface and borehole g.ophysical measurements, are being.used to iden-tify subtle lateral and vertical boundaries of litholog.c units on the Texas Coastal Plain within Quaternary strata, g.ound and borehole conductivity measurements discriminate sandy barrier island and fluvial and deltaic channel deposits from muddy floodplain, delta-plain, and estuarine deposits, Borehole conductiv- ity and natural g.mma log. similarly disting.ish distinct litholog.c units in the subsurface and identify erosional unconformities that likely separate units deposited during.different g.acial-interg.acial stag.s, Hig.-resolution dig.tal elevation models obtained from airborne lidar surveys reveal previously unrecog. nized topog.aphic detail that aids identification of surface features such as sandy channels, clay-rich interchannel deposits, and accretionary features on Pleistocene barrier islands, An optimal approach to identify litholog.c and stratig.aphic distribution in low-relief coastal-plain environments employs ① an initi

摘要：《征服丰富性》是费耶阿本德的遗作,本文通过对这本书所包含的理论及思想的全面解读,重新阐述了费耶阿本德关于实在论与相对主义的相关论证。穆内瓦在本文中为费耶阿本德在《征服丰富性》中的哲学立场进行了合理的辩护,尤其是批评了科学对经验所进行的抽象化处理,以及建立在这种抽象化基础上的"实在论"。但是,穆内瓦并不赞同费耶阿本德对于相对主义的理解,他借助生物学的相关理论为自己的观点进行了论证。最终,本文在以上论述的基础上指出了伦理学是衡量科学真理的一个标准,并且提出了关于知识的两种模型。

摘要：本文阐述企业电网设计中保证供电连续性和自动化控制等一些问题。

摘要：澳大利亚第一台振荡水柱将于 6个月后安装完毕 ,预计将向伍伦贡地区提供可再生的、可靠的、廉价电力。说明解决上述设备设计难题的情况。