Rental housing subsidy programmes have been an important partof the American welfare system since the 1930s. The Benefits ofSubsidized Housing Programs: An Intertemporal Approach is anempirical study of the distributive effects of the entire system ofrental housing subsidies for lower-income households based on anational sample. Using the 1977 Annual Housing Survey, ProfessorHammond has evaluated the benefits of all federal, state and localgovernment rental housing subsidy programmes taken as a wholeacross the nation. Additionally, she has estimated the changes inconsumption patterns resulting from these programmes and therelationship between household benefit and household income;household size; age, education, sex, and race of the head of thehousehold; and the geographic location of the household.

For everyone who has looked up at the stars on a clear nightand longed to know more about them, here is the perfectintroduction and guide to discovering the stars. Discover the Stars leads you on a tour of all the stars andconstellations visible with the naked eye and introduces you todeep-sky objects that can be seen with binoculars or a simpletelescope. The tour is conducted by the editor of Astronomymagazine, Richard Berry, whose two-color, computer-plotted sky mapsand clear instructions make stargazing fun and productive from yourfirst night out. The heart of Discover the Stars is two sections of big, beautifulsky maps and charts. The first section features twelve maps thatshow the entire sky overhead as it appears during each month of theyear. These outline all the constellations visible anywhere in theNorthern Hemisphere, and the accompanying text reveals the richancient mythology that surrounds the star groups. The second section is made up of twenty-three star ch

Asimov's New Guide to Science 作者：Isaac Asimov 出版社: Penguin (1993年5月27日) 丛书名: Penguin Press Science 平装: 896页 语种： 英语 ISBN: 0140172130 条形码: 9780140172133 商品尺寸: 12.9 x 3.8 x 19.8 cm 商品重量: 540 g 本书是一部全面介绍人类以科学的方法为工具，努力探索宇宙奥秘的科普著作。其内容涵盖了物理科学、生物科学及各个分支的发展状况和所取得的成就，阐述了各门学科之间的相互渗透和交叉。 本书作者阿西莫夫早在本世纪50年代就以创作撰写科幻小说和科普读物而蜚声文坛。他那非凡的驾驭语言和概念能力，不断对虚构世界和真实世界的新探索，以及他所取得的成就和名望，为他的作品赢得了广大的读者。 内容简介 Asimov tells the stories behind the science: the men and women who made the important discoveries and how they did it. Ranging from Galile

Structural proof theory is a branch of logic that studies thegeneral structure and properties of logical and mathematicalproofs. This book is both a concise introduction to the centralresults and methods of structural proof theory, and a work ofresearch that will be of interest to specialists. The book isdesigned to be used by students of philosophy, mathematics andcomputer science. The book contains a wealth of results onproof-theoretical systems, including extensions of such systemsfrom logic to mathematics, and on the connection between the twomain forms of structural proof theory - natural deduction andsequent calculus. The authors emphasize the computational contentof logical results. A special feature of the volume is acomputerized system for developing proofs interactively,downloadable from the web and regularly updated.

Promoters of multi-billion dollar land-use developmentmegaprojects systematically misinform parliaments, the public andthe media in order to get them approved and built. This book notonly explores these issues, but suggests practical solutionsdrawing on theory and scientific evidence from the several hundredprojects in twenty nations and five continents. It is of interestto students, scholars, planners, economists, auditors, politiciansand concerned citizens.

First published by Houghton Mifflin in 1962, Silent Springalerted a large audience to the environmental and human dangers ofindiscriminate use of pesticides, spurring revolutionary changes inthe laws affecting our air, land, and water. "Silent Spring becamea runaway bestseller, with international reverberations . . . Itis] well crafted, fearless and succinct . . . Even if she had notinspired a generation of activists, Carson would prevail as one ofthe greatest nature writers in American letters" (PeterMatthiessen, for Time's 100 Most Influential People of theCentury). This fortieth anniversary edition celebrates RachelCarson's watershed book with a new introduction by the author andactivist Terry Tempest Williams and a new afterword by theacclaimed Rachel Carson biographer Linda Lear, who tells the storyof Carson's courageous defense of her truths in the face ofruthless assault from the chemical industry in the year followingthe publication of Silent Spring and before her untimely death in1964.