4613 risultati
1913Hardcover without jacket. First edition, first thousand. Exterior is slightly tanned and worn, with a few minor marks on boards. Page block is a little tanned. Previous owner's name penned on first blank. Text is clear throughout. Mathematical Monographs No. 12. TS Used
1997469 pages. Some markings/highlighting to contents. Moderate wear. Sound working copy. Book
rif. DADAX013217524XNew unknown
1987rif. ws794Istra Broché 1987 In-4 (19 x 26,8 cm), broché, 237 pages ; pliures aux plats, coins frottés, par ailleurs assez bon état général. Livraison a domicile (La Poste) ou en Mondial Relay sur simple demande.
rif. 57696, Lyon- Paris, Emmanuel Vitte 1931, in-16, br., non massicoté, (papier jauni, une trace de café sur la 1rede couv.), bon état, 269p.
1989rif. vj1069Klincksieck Dos carré collé 1989 In-8 (15 x 23 cm), dos carré collé, 305 pages ; couverture uniformément jaunie, quelques petits incidents aux plats et au dos, par ailleurs assez bon état. Livraison a domicile (La Poste) ou en Mondial Relay sur simple demande.
rif. DADAX1428870695New unknown
1991rif. 91339Washington DC: United States General Accounting Office 1991. Presumed First Edition First Printing. Wraps. Very good. 41 3 pages. Footnotes. Illustrations. Tabular data. This is a "Report to the Chairman Subcommittee on Science Technology and Space Committee on Commerce Science and Transportation U.S. Senate". Pursuant to a congressional request GAO reviewed the National Aeronautics and Space Administration's NASA testing activities focusing on: 1 the adequacy of the NASA testing policies and practices; 2 NASA oversight of contractor testing; and 3 the adequacy of resources available for testing. In April 1990 NASA deployed its $1.5 billion Hubble Space Telescope to an orbit 380 miles above the earth. Soon after the agency discovered that the telescope's primary mirror was manufactured in the wrong shape severely degrading its scientific capabilities. The flaw was not detected before the telescope was launched because the mirror was not adequately tested. The Chairman Subcommittee on Science Technology and Space Senate Committee on Commerce Science and Transportation asked GAO to review NASA'S testing activities. Specifically GAO'S objectives were to assess the adequacy of testing policies and practices and the agency's oversight of contractor testing and to determine whether sufficient resources existed for testing. Because space missions are inherently risky systems cannot be easily repaired while in orbit and failures are widely publicized it is especially important that the systems' performance be thoroughly tested before launch. These complex systems are usually acquired in very limited quantities and test programs are specifically tailored for each project. According to a NASA team appointed to investigate the Hubble failure mirror tests were inadequately planned and poorly analyzed. The team further noted that NASA did not provide adequate oversight of the contractor's test program. Testing has varied from project to project. The success of many of NASA'S recent space projects indicates that in many cases testing was adequate. Tests were not effective however in detecting the Hubble mirror flaw. In other cases launch schedules have been adversely affected because tests did not identify problems soon enough. Testing practices vary because NASA has no uniform policies governing testing. Existing guidance is fragmented not well defined and varies from one NASA field center to another. In some cases hardware designed for the same mission may be tested to different standards. All centers have oversight controls to help ensure that contractors properly plan and conduct tests and report the results. Controls at some centers however could be further strengthened. Also according to a recent National Academy of Public Administration study NASA needs to retain more of its research and development work in-house to give civil service personnel the experience necessary to adequately oversee agency contractors. No standard exists for determining the amount of resources that should be devoted to testing but according to NASA officials resources are normally sufficient to conduct essential tests. However project managers must sometimes make cost-risk tradeoffs when defining the scope and extent of testing programs. Further some in-house test facilities and equipment need upgrading. United States General Accounting Office paperback
1994rif. 40435Washington DC: GAO 1994. good. 240 wraps includes two computer disks inside front cover tables Appendix I is a quick reference to the electronic edition. Front cover slightly weak probably due to presence of computer diskettes. Annual Report to the Chairman House and Senate Committees on Appropriations. GAO document B-205879. In fiscal year 1993 GAO made over 1 500 recommendations. This report includes summaries highlighting the impact of GAO's work and information on the status of all GAO recommendations that have not been fully implemented. The set of computer diskettes have details on all open recommendations. The diskettes have several menu options to help users find information easily. This is an interesting and important snapshot of government operations at the start ofthe Clinton Administration. GAO paperback
1994Paperback in very good condition. Spine is faded and page block foot is lightly marked. Pages are clean, and texts and illustrations are clear. TH Used
1994Hardcover in very good condition. Faint markings to front pastedown and FEP. Main content pages are clean, and text and illustrations are clear. TH Used
2000Universitext. Hardcover in very good condition. Pages are clean, and text and illustrations are clear. TH Used
1993Undergraduate Texts in Mathematics. Hardcover in very good condition. Pages are clean, and text and illustrations are clear. Small tears to page block head, no other faults. TH Used
1992Hardcover in very good condition. Item is very slightly cocked. Contents are in excellent condition, with clean pages, and clear text and illustrations. TH Used
rif. DADAX0521556996New unknown
rif. DADAX0521094054New unknown
rif. 0656999578.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
rif. 0366318004.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
rif. DADAX1428869352New unknown
rif. DADAX0198745311New unknown
1949rif. SHEL588Boston: Pratt & Co 1949. First Thus. Hardcover. Good. Original gilt-stamped cloth. 12 leaves maps 324 9pp. Following title "containing a new map of New-England an almanac for 1849 a memorandum for every day in the year and a business directory for New-England". Also "A Short Advertising Register and a business directory of many of the principal mercantile houses and manufacturing establishments of New York. States covered: Maine New Hampshire Massachusetts Vermont Rhode Island Connecticut. Map for each. NO Boston map. Moderate wear; old silverfish spots on small portions of spine & lower front cover; soiled covers; bottom of spine reglued. Good tight copy. Pratt & Co hardcover
rif. 0267610270.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
1982Paperback in very good condition. Spine is sunned and covers lightly shelfworn, lightest of wear to cover edges. Contents clean and spine tight. AD Used
rif. DADAX0273708708New unknown
2019rif. 2-1090725892Independently published 2019. Paperback. New. 587 pages. 11.00x8.50x1.33 inches. Independently published paperback
