Solution Techniques for Large Regional Partitioning Problems

This paper presents procedures for use in electoral districting and related applications. A region is to be divided into a number of “territories” formed as aggregates of discrete spatial units, subject to constraints on territory size and on intraterritorial connectivity, so as to minimize the total length of territory perimeters. The procedures are based on a hill-climbing principle, with progressively rigorous application of the connectivity and territory-size constraints. Computational tests indicate that the best of the procedures provide an effective trade-off between solution quality and computational efficiency.     

The late prehistory of xinjiang in relation to its neighbors

Recent research by Chinese archaeologists has identified many late prehistoric (2000-400 B.C.) oases, pastoral settlements, and cemeteries in eastern Central Asia (Xinjiang province of China). The synthesis presented here organizes the data into 10 archaeological cultures, defined on the basis of ceramics, burials, small finds, and architecture. The archaeological cultures reveal two periods, corresponding to the Bronze Age and the Iron Age. The oases cultures formed a core area before the Chinese Han period and maintained close contacts with nearby highland pastoralists in Siberia and western Central Asia. The evidence for interaction between Xinjiang and the complex cultures in China and western Central Asia is evaluated with regard to the origins of the early Xinjiang cultures.     

Birth control,population control,and family planning: an overview

This overview of the US birth control movement reflects on the emergence of family planning policy due to the efforts of Margaret Sanger, feminists, and the civil rights movement, the eugenics motive to limit "deviant" populations, and the population control movement, which aims to solve social and economic problems through fertility control. Population control moved through three stages: from the cause of "voluntary motherhood" to advance suffrage and women's political and social status, to the concept of "birth control" promoted by socialist feminists to help empower women and the working class, to, from 1920 on, a liberal movement for civil rights and population control. Physicians such as Dr. Robert Latou Dickinson legitimized the movement in the formation of the Committee on Maternal Health in 1925, but the movement remained divided until 1939, when Sanger's group merged with the American Birth Control League, the predecessor of the present Planned Parenthood Federation of America. A key legal decision in 1939 in the United States v. One Package amended the Comstock Act and allowed for the distribution of birth control devices by mail to physicians. Sanger, after a brief retirement, formed the International Planned Parenthood Federation and supported research into the pill. Eugenicists through the Committee on Maternal Health supported Christopher Tietze and others developing the pill. Final constitutional access to contraception based on the right to privacy was granted in Griswold v. Connecticut. The ruling in Eisenstadt v. Baird in 1972 extended this right to unmarried persons. The right to privacy was further extended in the Roe v. Wade decision in 1973 on legal abortion. The argument for improving the quality of the population remained from the formation of the Population Reference Bureau in 1929 through the 1960s. Under the leadership of Rockefeller, population control was defined as justified on a scientific and humanitarian basis. US government support for national and international family planning proceeded slowly through the 1950s, 1960s, and 1970s. Congress during 1967-70 enacted strong legislation in support of national and international family planning. The Bucharest conference in 1974 highlighted the inadequacies of international population control that deemphasized economic development. Polarization and divisiveness on population policy persists.     

Contributions to the agrarian history of Eastern Arabia II. The cultivars

Following on from an earlier study of agricultural implements and cultivation techniques in eastern Arabia, this paper presents the palaeobotanical and ethnohistoric evidence available on early cultivars in the region from the late 4th millennium B.C. through the pre-modern era. The introduction of new crops is discussed and, where possible, the evidence is marshalled which pertains to the origins of those new introductions and the dates of their arrival in the Gulf region.