Roswell District wilderness final environmental assessment.

"BLM-NM-ES-84-021-4332."

Department of the Interior : final environmental impact statement : preliminary wilderness recommendations for the central California area /

"BLM CA ES 87 001 8500"--P. v.

Utah BLM statewide wilderness environmental impact statement : final /

"BLM-UT-ES-90-002-4332"--P. [4] of cover.

Utah BLM statewide wilderness environmental impact statement : draft /

"Int. no. DES 86-1"--V. 1, p. i.

Oregon wilderness : environmental impact statement : draft /

Includes index.

Alaska Maritime National Wildlife Refuge : draft comprehensive conservation plan, wilderness review, and environmental impact statement.

"February 1988."

The Punjab civil law manual : notes on the Punjab Laws Act and the enactments extended to Punjab by that act, and also on the customary Hindu and Muhammedan law as applicable to the Punjab /

Mode of access: Internet.

Extended- and point-source radiometric program.

Imprint on cover: [Washington?] Civil Effects Test Operations [Office] U. S. Atomic Energy Commission.

Unemployment compensation : a history of extended benefits for the long-term unemployed /

"September 23, 1992; updated May 18, 1993."

Oregon Wilderness Act of 1983 : hearings before the Subcommittee on Public Lands and Reserved Water of the Committee on Energy and Natural Resources, United States Senate, Ninety-eighth Congress, first session, on H.R. 1149 ....

"October 20, 1983"--Pt. 2.

River of No Return Wilderness proposals : hearing before the Subcommittee on Parks, Recreation, and Renewable Resources of the Committee on Energy and Natural Resources, United States Senate, Ninety-sixth Congress, first session.

Hearings on S.95-97.

Washington State Wilderness Act of 1983 : hearings before the Subcommittee on Public Lands and Reserved Water of the Committee on Energy and Natural Resources, United States Senate, Ninety-eighth Congress, first session, on S. 837 ... Spokane, Wash., June 2, 1983; Seattle, Wash., June 3, 1983; Washington, D.C., September 30, 1983.

Distributed to some depository libraries in microfiche.

Idaho wilderness : hearings before the Subcommittee on Public Lands and Reserved Water of the Committee on Energy and Natural Resources, United States Senate, Ninety-eighth Congress, first session, to review the Idaho wilderness recommendations.

"Coeur D'Alene, Idaho, August 16, 1983; Lewiston, Idaho, August 17, 1983"--Pt. 2.

Entanglement induced by spontaneous emission in spatially extended two-atom systems

The role of the collective antisymmetric state in entanglement creation by spontaneous emission in a system of two non-overlapping two-level atoms has been investigated. Populations of the collective atomic states and the Wootters entanglement measure (concurrence) for two sets of initial atomic conditions are calculated and illustrated graphically. Calculations include the dipole-dipole interaction and a spatial separation between the atoms that the antisymmetric state of the system is included throughout even for small interatomic separations. It is shown that spontaneous emission can lead to a transient entanglement between the atoms even if the atoms were prepared initially in an unentangled state. It is found that the ability of spontaneous emission to create transient entanglement relies on the absence of population in the collective symmetric state of the system. For the initial state of only one atom excited, entanglement builds up rapidly in time and reaches a maximum for parameter values corresponding roughly to zero population in the symmetric state. On the other hand, for the initial condition of both atoms excited, the atoms remain unentangled until the symmetric state is depopulated. A simple physical interpretation of these results is given in terms of the diagonal states of the density matrix of the system. We also study entanglement creation in a system of two non-identical atoms of different transition frequencies. It is found that the entanglement between the atoms can be enhanced compared to that for identical atoms, and can decay with two different time scales resulting from the coherent transfer of the population from the symmetric to the antisymmetric state. In addition, it was found that a decaying initial entanglement between the atoms can display a revival behaviour.

The extended metamorphosis of a complete bipartite design into a cycle system

A K-t,K-t-design of order n is an edge-disjoint decomposition of K-n into copies of K-t,K-t. When t is odd, an extended metamorphosis of a K-t,K-t-design of order n into a 2t-cycle system of order n is obtained by taking (t - 1)/2 edge-disjoint cycles of length 2t from each K-t,K-t block, and rearranging all the remaining 1-factors in each K-t,K-t block into further 2t-cycles. The 'extended' refers to the fact that as many subgraphs isomorphic to a 2t-cycle as possible are removed from each K-t,K-t block, rather than merely one subgraph. In this paper an extended metamorphosis of a K-t,K-t-design of order congruent to 1 (mod 4t(2)) into a 2t-cycle system of the same order is given for all odd t > 3. A metamorphosis of a 2-fold K-t,K-t-design of any order congruent to 1 (mod 4t(2)) into a 2t-cycle system of the same order is also given, for all odd t > 3. (The case t = 3 appeared in Ars Combin. 64 (2002) 65-80.) When t is even, the graph K-t,K-t is easily seen to contain t/2 edge-disjoint cycles of length 2t, and so the metamorphosis in that case is straightforward. (C) 2004 Elsevier B.V. All rights reserved.