Biogeographical studies are often based on a statistical analysis of data sampled in a spatial context. However, in many cases standard analyses such as regression models violate the assumption of independently and identically distributed errors. In this article, we show that the theory of wavelets provides a method to remove autocorrelation in generalized linear models (GLMs). Autocorrelation can be described by smooth wavelet coefficients at small scales. Therefore, data can be decomposed into uncorrelated and correlated parts. Using an appropriate linear transformation, we are able to extend GLMs to autocorrelated data. We illustrate our new method, called the wavelet‐revised model (WRM), by applying it to multiple regression with response variables conforming to various distributions. Results are presented for simulated data and real biogeographical data (species counts of the plant genus Utricularia [bladderworts] in grid cells throughout Germany). The results of our WRM are compared with those of GLMs and models based on generalized estimating equations. We recommend WRMs, especially as a method that allows for spatial nonstationarity. The technique developed for lattice data is applicable without any prior knowledge of the real autocorrelation structure. 相似文献
Prehispanic Mesoamerican peoples collected, processed, and used bitumen for decoration, sealant, and adhesive. Among the earliest to do so were the Olmec (1200–500 b.c.) of Mexico's southern Gulf coastal lowlands. Geochemical analysis of bitumen from Olmec archaeological contexts as well as from seeps in the Olmec region reveals that seeps can be geochemically differentiated and can be correlated with archaeological samples. Groups of sites with chemically different archaeological bitumen indicate multiple procurement networks reflecting complex regional systems of exchange and interaction. Organic geochemical analysis of bitumen provides a new tool to study procurement strategies and exchange patterns in Mesoamerica. 相似文献
Fumio Itoh (ed.), China in the Twenty‐First Century: Politics, Economy, and Society. New York: United Nations University Press, 1997. xiv + 287 pp. $31.15.
David Lee and Christopher Waters (eds), Evatt to Evans: The Labor Tradition in Australian Foreign Policy. Sydney: Allen & Unwin, in association with the Department of International Relations, Research School of Pacific and Asian Studies, Australian National University, 1997. ix + 257 pp. $24.95 (paper).
Richard Haass, The Reluctant Sheriff: The United States After the Cold War. New York: Council on Foreign Relations, 1997. 148 pp. US$24.95 (cloth).
Mark McGillivray and Gary Smith (eds), Australia and Asia. Melbourne: Oxford University Press, 1997. vii + 248 pp. No price given.
Geoffrey Edwards and Alfred Pijpers (eds), The Politics of European Treaty Reform, The 1996 Intergovernmental Conference and Beyond. London and Washington: Pinter, 1997. viii + 353 pp. No price given (paper).
John Lewis Gaddis, We Now Know: Rethinking Cold War History. New York: Oxford University Press, 1997. x + 425 pp. $75.00 (cloth).
Melvyn P. LeMer, A Preponderance of Power: National Security, the Truman Administration, and the Cold War. Stanford: Stanford University Press, 1992. xvii + 689 pp. US$25.00 (cloth).
Donatella Delia Porta and Yves Meny (eds), Democracy and Corruption in Europe. London: Pinter, 1997. viii + 208 pp. £45.00 (cloth), £13.99 (paper).
Rodney Gouttman, Bondi in the Sinai: Australia, the MFO and the Politics of Participation. Maryland: University of America, 1996. xiii + 202pp. US$29.50 (cloth).
James Cotton and John Ravenhill (eds), Seeking Asian Engagement: Australia in World Affairs, 1991–95. Melbourne: Oxford University Press with the Australian Institute of International Affairs, 1997. xiv + 362 pp. $29.95 (paper).
Godfrey Linge and Doug Porter (eds), No Place for Borders: The HIV/AIDS Epidemic and Development in Asia and the Pacific. St Leonards: Allen & Unwin, 1997. xxii+ 191 pp. $29.95 (paper).
Aharon Levran, Israeli Strategy After Desert Storm: Lessons of the Second Gulf War. London: Frank Cass, 1997. ix+ 169 pp. £35.00 (cloth), £17.50 (paper).
Daniel Fineman, A Special Friendship: The United States and Military Government in Thailand, 1947–1958. Honolulu: University of Hawai'i Press, 1997. viii + 357 pp. $70.00 (cloth).
The United Nations and Rwanda, 1993–1996. United Nations Blue Book Series, Volume X. New York: Department of Public Information, United Nations, 1996. 750 pp. US$29.95 (paper).
Edmond Keller and Donald Rothchild (eds), Africa in the New International Order: Rethinking State Sovereignty and Regional Security. Boulder: Lynne Rienner, 1996. ix + 253 pp. US$49.95 (cloth), US$19.95 (paper). 相似文献
The dominant theme in court reorganization has been to state judiciaries by consolidating trial courts and centralizing their administration in a state level office. This article suggests that the debate over the relative merits of a centralized vs. a decentralized (or fragmented) court system ignores the rich variety of organizational structures used in other fields. The potential judicial implications of three models-franchise, corporate, and federal-are examined in detail. Their underlying assumptions are compared with those of the centralization approach. The argument is made that none of the models is appropriate for all circumstances. Each approach to court organization emphasizes a particular set of objectives at the expense of another set. An effort is made to identify what each approach has to offer. 相似文献
A Malmquist-Luenberger productivity index is employed to account for both marketed output and the output of pollution abatement activities of U.S. state manufacturing sectors for –1986. The index allows us to decompose the change in productivity into measures of change in efficiency and technical change. By accounting for the change in emissions, average annual productivity growth is 3.6 percent, whereas it is 1.7 percent when emissions are ignored. We also find adjusted productivity growth improved after 1977, and "Frost Belt" states with rapidly growing manufacturing sectors have significantly higher rates of productivity growth than "Sun Belt" states with slow growing manufacturing sectors. 相似文献
Archaeologists are adept at analyzing variation in artifacts. The discipline has well established and tested methods to track change through time and to evaluate the function of artifacts that depend upon measures of variation in the archaeological record. Although a critical concept, the means by which variation in material culture is generated is not well understood. This paper explores one source of variation, copying errors, and systematically examines how cultural transmission processes act to amplify, reduce, or maintain such variation. Using simple models, we generate expected distributions for the amount of variation that occurs through time under varying circumstances. This variation is caused by small errors that are transmitted from one person to another in the propagation and replication of cultural traits. These baseline values provide useful null models for explaining variation in prehistoric assemblages of artifacts. We use measurements of projectile points from Owens Valley and Woodland ceramics from Illinois to demonstrate the value of this approach. 相似文献
RODERICK STACKELBERG. Idealism Debased: From Völkisch Ideology to National Socialism. Kent, Ohio: The Kent State University Press, 1981. Pp. XIII, 202, 3 plates. $18 (US). Reviewed by Lawrence D. Stokes JEROME CH'EN. China and the West: Society and Culture 1815–1937. Bloomington and London: Indiana University Press. Pp. 488. $25.90 (Can.) Reviewed by David P. Barrett FREDERICK W. MARKS ill. Velvet on Iron: The Diplomacy of Theodore Roosevelt. Lincoln and London: University of Nebraska Press, 1979. Pp. xiv, 247. $15.00 (US). Reviewed by Raymond A. Esthus CRAIG L. SYMONDS. Navalists and Antinavalists: The Naval Policy Debate in the United States, 1785–1827. Newark: University of Delaware Press, 1980. Pp. 252. $17.50 (US). Reviewed by Reginald C. Stuart BERNARD RANSOM, Connolly's Marxism, London: Pluto, 1980. Pp. 126. Reviewed by Desmond Bowen THOMAS A. BAILEY and PAUL B. RYAN, Hitler vs. Roosevelt: The Undeclared War. London: Collier Macmillan, 1979. Pp. 302. £7.45. Reviewed by Ronald W. Pruessen M.A. HICKS, False, Fleeting, Perjur'd Clarence; George, Duke of Clarence, 1449–1478. Gloucester: Alan Sutton, and Atlantic Highlands, NJ. Humanities Press, 1980. Pp. 270. $22.00 (US). Reviewed by Robert Tittler MURIEL ATKIN, Russia and Iran, 1780–1828. Minneapolis: University of Minnesota Press, 1980. Pp. xii, 216. $20 (US). Reviewed by M.E. Yapp J.K. FEDOROWICZ. England's Baltic Trade in the Early Seventeenth Century: A Study in Anglo-Polish Commerical Diplomacy. Cambridge: Cambridge University Press, 1980. Pp. XIII, 334. $35 (US). Reviewed by David S. Macmillan MICHAEL CROWDER. Colonial West Africa: Collected Essays. London: Frank Cass, 1978. Pp. 341. $28.50 (US). Reviewed by John Flint PETER GRAF KIELMANSEGG. Deutschland und der erste Weltkrieg. 2. Auflage. Stuttgart: Klett-Cotta, 1980. Pp. XI, 755. Reviewed by Henry Cord Meyer PIOTR S. WANDYCZ. The United States and Poland. Cambridge, MA: Harvard University Press. Pp. XVI, 465. $28.50 (US). Reviewed by Stanislaw Bobr-Tylingo FREDERICK COOPER. From Slaves to Squatters: Plantation Labor and Agriculture in Zanzibar and Colonial Kenya, 1890–7925. New Haven: Yale University Press, 1980. Pp. xi, 328. $25 (US). Reviewed by Mike Mason DONALD E. QUELLER. Medieval Diplomacy and the Fourth Crusade. London: Variorum Reprints, 1980. Pp. 322. £22. Reviewed by Bernice M. Kacznski CHRISTINE MOSS HELMS. The Cohesion of Saudi Arabia: Evolution of Political Identity. London: Croom Helm, &; Baltimore: The Johns Hopkins University Press, 1981. Pp. 313. $25.00 (US). Reviewed by Ray L. Cleveland CHRISTOPHER H.D. HOWARD, editor. The Diary of Edward Goschen, 1900–1914. London: Royal Historical Society (Camden Fourth Series, Vol. 25), 1980. Pp. xn, 315. £10. Reviewed by Briton C. Busch 相似文献