Blazar jet physics in the age of Fermi

The impact of the Fermi Gamma-ray Space Telescope on blazar research is reviewed. This includes a brief description of the Fermi Large Area Telescope, a summary of the various classes of extragalactic sources found in the First Large Area Telescope AGN Catalog, and more detailed discussion of the flat spectrum radio quasar 3C454.3 and the BL Lac object PKS 2155-304. Some theoretical studies related to ongoing blazar research with Fermi are mentioned, including implications of gamma-ray observations of radio galaxies on blazar unification scenarios, variability in colliding shells, and whether blazars are sources of ultra-high energy cosmic rays.Comment: Minor corrections and improvements; 11 pages, 2 figures; in Proceedings of IAU Symposium 285, "Jets at all Scales," Buenos Aires, Argentina, 13-17 September, 2010, G.E. Romero, R.A. Sunyaev and T. Belloni, ed

A Proposed Livestock Research Program for Alaska

This report presents, primarily, areas of research and research goals on range management and beef cattle production that 1) appear to be most urgent and 2) that appear attainable within the next few years without a great expansion of personnel, equipment and funds. Other areas of research and development in the livestock industry (not including dairy) are discussed briefly. Present trends in agricultural research and recommendations for an expanded research program in animal husbandry are given. Some of these recommendations have appeared in other reports and are singled out here to emphasize their importance to a livestock research program for Alaska.Alaska's feedbase studies -- Beef cattle production research -- Other livestock research -- Recommendations -- Appendi

The Debt Limit and the Constitution: How the Fourteenth Amendment Forbids Fiscal Obstructionism

The statutory debt limit restricts the funds that can be borrowed to meet the government\u27s financial obligations. On the other hand, the Fourteenth Amendment\u27s Public Debt Clause mandates that all the government\u27s financial obligations be met. This Note argues that the Public Debt Clause is violated when government actions create substantial doubt about the validity of the public debt, a standard that encompasses government actions that fall short of defaulting on or directly repudiating the public debt. The Note proposes a test to determine when substantial doubt is created. This substantial doubt test analyzes the political and economic environment at the time of the government\u27s actions and the subjective apprehension exhibited by debt holders. Applying this test, this Note concludes that Congress\u27s actions during the 1995–96 and 2011 debt-limit debates violated the Public Debt Clause, though Congress\u27s conduct during the debate over the debt limit in 2002 did not. And under a departmentalist understanding of executive power, a conclusion of this nature would be the basis for the president to ignore the debt limit when congressional actions create unconstitutional doubt about the validity of the public debt

Stochastic Data Clustering

In 1961 Herbert Simon and Albert Ando published the theory behind the long-term behavior of a dynamical system that can be described by a nearly uncoupled matrix. Over the past fifty years this theory has been used in a variety of contexts, including queueing theory, brain organization, and ecology. In all these applications, the structure of the system is known and the point of interest is the various stages the system passes through on its way to some long-term equilibrium. This paper looks at this problem from the other direction. That is, we develop a technique for using the evolution of the system to tell us about its initial structure, and we use this technique to develop a new algorithm for data clustering.Comment: 23 page