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réf. 14611Walkowitz Abraham American born Russia 1878-1965. UNTITLED PORTRAIT A. Ink on paper 1908. Signed and dated 1908 lower right. 4 1/8 x 3 3/8 inches. In excellent condition. Although Walkowitz is primarily known for his many paintings and drawings of the dancer Isadora Duncan he was an accomplished Modernist as attested by the expressionistic power of these small portrait drawings. unknown
2026réf. LRB36036395Paris: Editions Recreasoft 2026 Language: English. Approximately 610 pages. English: Print-on-demand reprint. Original edition : 1845. Text in English. This work provides a detailed account of early missionary activities in Western Africa focusing on the Soosoos Bulloms and other tribes. It includes an introduction with a geographical and ethnographic sketch of the region a history of the slave trade and an overview of early African churches. The text also surveys modern missionary efforts in Africa offering valuable insights into 19th-century religious and colonial endeavors. Book images are non-contractual. Editions Recreasoft. Softcover. New. Editions Recreasoft paperback
réf. 1120006872.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
réf. 101928935X.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
réf. 101928448X.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
réf. 1166337413.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
2026réf. LRB48006860Paris: Editions Recreasoft 2026 Language: English. Approximately 656 pages. English: Print-on-demand reprint. Original edition : 1847. Text in English. This historical work provides a detailed account of the Church of England's missionary activities in Sierra Leone during the 19th century. It includes an introductory overview of the colony and a comprehensive sketch of the Niger Expedition of 1841 offering valuable insights into colonial history and religious missions in West Africa. The text is a significant resource for scholars of African studies missionary history and British colonialism. Book images are non-contractual. Editions Recreasoft. Softcover. New. Editions Recreasoft paperback
réf. 1104925591.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
réf. 1356998038.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
réf. 1166178005.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
2019réf. x-1532672861Cascade Books 2019. Hardcover. New. 366 pages. 6.00x0.94x9.00 inches. Cascade Books hardcover
2026réf. LRB507547Paris: Editions Recreasoft 2026 Language: English. Approximately 630 pages. English : Print-on-demand reprint. Original edition : n.d. Dictionary of English words and expressions with Hebrew equivalents designed as a practical reference for readers students and translators working between the two languages. A useful bibliographic item for the study of bilingual lexicography and Hebrew language reference works. Concise English-Hebrew dictionary offering vocabulary and equivalences for practical consultation. Of interest to collectors and researchers of bilingual reference books and Hebrew lexicography. Book images are non-contractual. Editions Recreasoft. Softcover. New. Editions Recreasoft paperback
réf. 116469507X.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
réf. 1258350033.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
réf. 0469111550.Ghardcover. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. hardcover
1955réf. 29685New York, McGraw-Hill, 1955. Royal 8vo. Original cloth with silver lettering on spine. IX,702 pp.
1947réf. 29690New York, John Wiley & Sons, (1947). Original cloth with gilt spine. No dust jacket. XII,212 pp. Text illustrated.
1950réf. 29691New York, John Wiley & Sons, (1950). 8vo. Original cloth with gilt spine. No dust jacket. IX,179 pp. Text illustrated.
1947réf. 7020New York: Wiley & Sons 1947 First edition. Original navy cloth. Octavo. Sixteen figures seven tables. A very good copy. Abraham Wald pioneered the science of decision analysis and in particular that of sequential decision making. Before Wald the traditional style of statistical decision was to posit a hypothesis make a predetermined number of measurements then make a decision whether to accept or reject the hypothesis. Wald realized that this procedure is quite wasteful and that many measurements could be saved if given the option to decide at every step whether to continue or stop the measurement process. This idea revolutionized the art of statistical testing and was later developed in the hands of computer scientists into a field known as on-line algorithms. "Most although not all of Wald's results were summed up in Sequential Analysis 1974. With minor exceptions the entire contents of this book were obtained by him. Such a phenomenon is rare in mathematical books and indicates the extent to which he founded and dominated the field of sequential analysis" DSB. Wiley & Sons, hardcover books
1952réf. 123529Notre Dame IN: Notre Dame University 1952. Paperback. Very Good. 8vo. 1952 printing; grey saple printed wraps; lite sunning; 47 clean unmarked pagesreferences Notre Dame University paperback
1955réf. 043237Mcgraw-hill Book Company 1955. 1st Edition . Hardcover. Very Good/No Jacket. Well-kept solid copy with clean pages. Sturdy covers have lost some of their navy blue color on the spine. Heavy bulky book. Benefits the Friends of the Albany CA Library. Mcgraw-hill Book Company hardcover
1955réf. 29685New York McGraw-Hill 1955. Royal 8vo. Original cloth with silver lettering on spine. IX702 pp. First edition. hardcover
1957réf. 304750Stanford University Press 1957. 2nd Printing . Hardcover. Near Fine/Good-. dustjacket worn and torn previous owners name ffep otherwise unmarked 702pp NF/G-. Stanford University Press hardcover
1944réf. 5180Washington: National Defense Research Committee 1944. First edition. First edition very rare of Wald's seminal invention of 'Sequential analysis' the "notion that in some sense it is economical to observe and analyze data sequentially rather than to observe and analyze a single sample of predetermined fixed size" DSB. It is here offered in the original 'restricted' reports; it was published four years later in his well-known book Sequential Analysis. "It was Wald in 1943 who first formulated mathematically and solved quite generally the problem of sequential tests of statistical hypotheses. He introduced the particular method of the sequential probability ratio test and with Wolfowitz 1948 showed its optimal properties" ibid. . THE INVENTION OF SEQUENTIAL ANALYSIS - THE ORIGINAL RESTRICTED REPORTS. First edition very rare of Wald's seminal invention of 'Sequential analysis' developed while he was in charge of Columbia University's Statistical Research Group in response to the demand for more efficient methods of industrial quality control during World War II. It is here offered in the original 'restricted' reports; it was published four years later in his well-known book of the same title. "Wald's second major achievement in mathematical statistics is sequential analysis. The notion that in some sense it is economical to observe and analyze data sequentially rather than to observe and analyze a single sample of predetermined fixed size was not a new one. Intuitive support for this notion is immediate; if the evidence shown in sequentially unfolding data is sharply one-sided it seems reasonable to believe that the inquiry can be terminated early with lengthier inquiries reserved for those situations in which the issue at hand appears via the sequentially unfolding data to be in greater doubt. This notion and the partial mathematical formulation of it were to be found in the statistical literature; among those who dealt with it before Wald was Walter Bartky of Chicago and among Wald's contemporaries George Barnard working in England. But again it was Wald in 1943 who first formulated mathematically and solved quite generally the problem of sequential tests of statistical hypotheses. He introduced the particular method of the sequential probability ratio test and with Wolfowitz 1948 showed its optimal properties. He found operating characteristic and average sample number functions; he introduced if he did not completely solve the problem of sequential tests of composite hypotheses utilizing weight functions; and he began vital discussions of such basic topics as multivalued decisions and optimal sequential estimation. All this plus many special problems were gathered together in Sequential Analysis 1947 a book surprisingly easy to read less formal and more elementary in structure than his work on decision functions" DSB. No copies listed on ABPC/RBH. "Sequential analysis is the branch of statistics concerned with investigations in which the decision whether or not to stop at any stage depends on the observations previously made. The motivation for most sequential investigations is that when the ends achieved are measured against the costs incurred including the cost of making observations sequential designs are typically more efficient than non-sequential designs . "The term 'sequential' is occasionally extended to cover also investigations in which various aspects of the design may be changed according to the observations made. For example preliminary experience in an experiment may suggest changes in the treatments being compared; in a social survey a small pilot survey may lead to modifications in the design of the main investigation . In a sequential investigation observations must be examined either one by one as they are collected or at certain stages during collection. A sequential procedure might be desirable for various reasons. The investigator might wish to have an up-to-date record at any stage either for general information or because the appropriate sample size depends on quantities that he can estimate only from the data themselves. Alternatively he may have no intrinsic interest in the intermediate results but may be able to achieve economy in sample size by taking them into account. Three examples will illustrate these points: 1 An investigator may wish to estimate to within 10 per cent the mean weekly expenditure on tobacco per household. In order to determine the sample size he would need an estimate of the variability of the expenditure from household to household and this might be obtainable only from the survey itself. 2 A physician wishing to compare the effects of two drugs in the treatment of some disease may wish to stop the investigation if at some stage a convincing difference can already be demonstrated using the available data. 3 A manufacturer carrying out inspection of batches of some product may be able to pass most of his batches with little inspection but may carryout further inspection of batches of doubtful quality. A given degree of discrimination between good and bad batches could be achieved in various ways but a sequential scheme will often be more economical than one in which a sample of constant size is taken from each batch "The most appropriate design and method of analysis of a sequential investigation depend on the purpose of the investigation. The statistical formulation of that purpose may take one of a number of forms usually either estimation of some quantity to a given degree of precision or testing a hypothesis with given size and given power against a given alternative hypothesis. Economy in number of observations is typically important for sequential design" International Encyclopedia of the Social Sciences. "The problem of sequential analysis arose in the Statistical Research Group of Columbia University in connection with some comments made by Captain G. L. Schuyler of the Bureau of Ordnance Navy Department. Milton Friedman and W. Allen Wallis recognized the great potentialities and the far-reaching consequences that sequential analysis might have for the further development of theoretical statistics. In particular they conjectured that a sequential test procedure might be constructed which would control the possible errors committed by wrong decisions exactly to the same extent as the best current procedure based on a predetermined number of observations and at the same time would require on the average a substantially smaller number of observations than the fixed number of observations needed for the current procedure. Friedman and Wallis also exhibited a few examples of sequential modifications of current test procedures resulting in some cases in an increase of efficiency. It was at this stage that they proposed the problem of sequential analysis to the author i.e. Wald. This gave the incentive for the author's investigations which then led to the development of the sequential probability ratio test. "Because of the usefulness of the sequential probability ratio test in development work on military and naval equipment it was classified Restricted within the meaning of the Espionage Act. The author was requested to submit his findings in a restricted report dated September 1943. In this report the sequential probability ratio test and the basic theory is given. To facilitate the use of this new technique by the Army and the Navy the Statistical Research Group issued a second report in July 1944 which gives an elementary non-mathematical exposition of the applications of the sequential probability ratio test and contains a considerable number of tables charts and computational simplifications to facilitate applications" Wald pp. 2-3. The 10 parts are as follows: Sequential analysis of statistical data: Theory September 1943. Sequential tests of statistical significance April 1944. Applications 15 July 1944: Sequential analysis in inspection and experimentation Introduction Section 1; Sequential analysis when the result of a single observation is a classification as good or bad and when the result of the test is acceptance or rejection Section 2; Sequential analysis when the result of a single observation is a classification as good or bad and when the result of the test is a decision between two methods or products Section 3; First report: Small 4to 230 x 180 mm original printed wrappers. Upper right corner with a slight bump. Previous owners initials to front wrapper W.L.D. Stamped RESTRICTED. IX 1179 3: blank pp. Second report: 8vo 244 x 153 mm. Original printed wrappers fine. 10 2: blank pp. Third report: Large 4to 285 x 220 mm. Original ring binder containing the six sections in original printed wrappers together with the two appendicies aslo in wrappers: S1:VIII16; S2:II22; S3:II22; S4:II22; S5:II18; S6:II18; A1:II14; A2:II22 pp. In very good condition. Also included is the mimiographed distribution list of the third report: 1 sheet typescript printed on both sides. All three reports are in the rare original issue with the text: "This document contains information affecting the national defense of the United States within the meaning of the Espionage Act 50 U.S.C. 31 and 32 as amended. Its transmission or the revelation of its contents in any manner to an unauthorized person is prohibited by law". OCLC lists 8 copies of the first report 1 of the second National Institute of Standards and Technology and the third report is not located in any library. National Defense Research Committee unknown
2013réf. Q-0486615790Dover Publications 2013-11-21. Paperback. New. In shrink wrap. Looks like an interesting title! Dover Publications paperback