A linear inequality method of establishing certain social choice conjectures

This paper demonstrates the equivalence between sets of linear inequalities and a variety of social choice problems, a fact which permits the solution of the problems using linear programming techniques. An important advantage of this approach is that the primal solution of the linear programming problem, if one exists, provides a specific example illustrating the social choice conjecture under consideration. Examples illustrating this approach to several standard types of social choice problems are presented. Social choice theory relies heavily on demonstrations that various social choice functions can disagree with one another or that these functions are inconsistent with one or more fundamental conditions or axioms held to be desirable properties of a method of deriving a “fair and reasonable” social choice from a set of individual preference orderings. A large class of such conjectures can be shown to be equivalent to systems of linear inequalities. This equivalence makes it possible to establish the truth or falsehood of such social choice conjectures by testing the systems for consistency or by employing one of the many available algorithms to solve the corresponding linear programs. We will give below a number of examples of conjectures resolved in this fashion, but first we must show how the appropriate inequality systems and linear programs may be found.     

A newspaper surveillance study of homicide-suicide in the United States

The objective of this study was to identify the number and subtypes of homicide-suicides in the United States by age group and state over a 3-year period from 1997 through 1999. A total of 673 homicide-suicides, including 674 perpetrators and 779 victims, were identified from Internet searches of 191 national newspapers, and they were classified according to a modified Hanzlick-Koponen typology. One quarter of the homicide-suicides were perpetrated by persons 55 years or older, and 77% were spousal/consortial, higher than the 57% observed in the younger age group; 11% of the older homicide-suicides were familial, compared with 16% in the younger age group. Whereas only 3% of older homicide-suicides were infanticide/pedicide, 16% of the younger homicide-suicides involved parents killing their children. Forty-five states, including the District of Columbia, reported a homicide-suicide during the 3-year period, and they occurred most frequently in Florida (163), California (98), Texas (36), and New York (35). Newspaper surveillance is useful to identify where homicide-suicides are occurring most frequently, but they are underestimates of the true prevalence. However, the number of incidents detected is large enough that the cases detected may be a fairly representative sample.     

France,Civil-Military Relations,and Nuclear Weapons

Robert S. McNamara, In Retrospect; The Tragedy and Lessons of Vietnam. New York: Random House, 1995. xviii, 414 pp./$27.50 cloth.     

The great tradition: The spread of diplomacy in the ancient world

Diplomacy as we understand it to the present day — a sophisticated system for handling affairs of state and negotiating treaties, based on accredited envoys working within a framework of international law and protocol - emerged in the third millennium BCE in the ancient Near East at the same time as the development of writing and urban culture. Transmitted by the great cuneiform civilizations of Babylon and Assyria to Achaemenid Persia and classical Greece and Rome, the heritage of diplomacy continued to flourish in Byzantium, Rome, and Venice. The Renaissance provided the conditions for the spread of a tradition that had existed in many essential aspects for millennia.     

Public Perceptions of Traumatic Events and Policy Preferences during the George W. Bush Administration: A Portrait of America in Turbulent Times

The American policy landscape during the George W. Bush administration was shaped by a series of traumatic events that confronted the nation and people of the United States. These included the terrorist attacks of 9/11 in 2001, the anthrax attacks in the fall of 2001, military actions in Afghanistan and Iraq, Hurricane Katrina in 2005, the threat of a flu pandemic in 2005 and 2006, the 2007 Intergovernmental Panel on Climate Change reports, and the financial collapse of 2008. The results of the 2008 presidential election appear to be a rejection of the Bush administration's major policy responses to these events, but the variation in type and level of public support among different groups suggests a much more varied and dynamic portrait of America in turbulent times. Using a multiyear panel survey, an interdisciplinary team of political scientists and psychologists analyzed the behavior and political responses to the events by the American public. The findings suggest that even seven years after the events of 11 September 2001, people with higher levels of post-traumatic stress symptomatology related to 9/11 have significantly different interpretations of the threat of terrorism and the appropriate policy responses to it than do others. Perceptions of threat, the political salience of terrorism and other traumatic events, the level of support for political leaders and assessments of the government's actions vary over time and across different groups within society based on the psychological, political and social, and personal characteristics of the respondent. These results help to open the black box of aggregate public opinion by providing a detailed portrait of how psychological, social, political, and personal factors affected perceptions and political behavior during the George W. Bush administration.