A Model for comparing reduced impact logging with conventional logging for an Eastern Amazonian Forest

Using data from a logging experiment in the eastern Brazilian Amazon region, we develop a matrix growth and yield model that captures the dynamic effects of harvest system choice on forest structure and composition. Multinomial logistic regression is used to estimate the growth transition parameters for a 10-year time step, while a Poisson regression model is used to estimate recruitment parameters. The model is designed to be easily integrated with an economic model of decisionmaking to perform tropical forest policy analysis. The model is used to compare the long-run structure and composition of a stand arising from the choice of implementing either conventional logging techniques or more carefully planned and executed reduced-impact logging (RIL) techniques, contrasted against a baseline projection of an unlogged forest. Results from log and leave scenarios show that a stand logged according to Brazilian management requirements will require well over 120 years to recover its initial commercial volume, regardless of logging technique employed. Implementing RIL, however, accelerates this recovery. Scenarios imposing a 40-year cutting cycle raise the possibility of sustainable harvest volumes, although at significantly lower levels than is implied by current regulations. Meeting current Brazilian forest policy goals may require an increase in the planned total area of permanent production forest or the widespread adoption of silvicultural practices that increase stand recovery and volume accumulation rates after RIL harvests. Published by Elsevier B.V.

A United States Information Agency e sua ação no Brasil de 1953 a 1964

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pro-American non-alignment. Sweden and Finland develop closer military co-operation with the United States. OSW COMMENTARY NUMBER 205/31.03.2016

Russia’s increasingly aggressive policy and its enhanced military activity in the Nordic-Baltic region has led to revaluations in Sweden’s and Finland’s security and defence policies and a rethinking of the formats of their military co-operation. While remaining outside NATO, the two states have been developing closer bilateral defence co-operation and working more closely with the United States, while at the same time developing co-operation with NATO. Sweden and Finland perceive the United States as the guarantor of regional and European security. From their point of view, the United States is currently the country that has both the necessary military capabilities and the political will to react in the event of a conflict between Russia and NATO in the Nordic-Baltic region, in which both countries would inevitably become involved despite their non-aligned status. For Sweden and Finland, intensified co-operation with the United States offers an alternative to NATO membership, which is currently out of the question for domestic political reasons. Meanwhile, the US has also become increasingly aware of the strategic importance of the two states, which, for the purposes of contingency planning, are in fact an extension of NATO’s north-eastern flank.

Handbook of definitions of materials and end products used in "M" and "L" orders issued by the War production board through March 1, 1943.

Reproduced from typewritten copy.

Soviet espionage within the United States Government : report.

No more published?

Air leadership : proceedings of a conference at Bolling Air Force Base, April 13-14, 1984, sponsored by the Air Force Historical Foundation, the American Military Institute, and the Military Classics Seminar /

Mode of access: Internet.

Commercial vessel safety economic costs : appendix A, estimation procedures for costs and costs impacts of marine safety regulations /

"Report no. CG-D-1-81."

Commercial vessel safety economic benefits : appendix A, estimation procedures for benefits of marine safety regulations /

"Report no. CG-D-2-81."

Development of a streaming-fiber oil spill control system, Stage II /

Final report, issued December 1976.

Evaluation of SDRC damping analysis /

"Report no. CG-D-5-80"--Cover.

Model tests and numerical simulation of ship capsizing in following seas : final report for period December 1976 - October 1979 /

"Report no. CG-D-08-81."

Study of task performance problems in reports of collisions, rammings, and groundings in harbors and entrances /

Mode of access: Internet.

Energy efficiency of sea and air vehicles /

Includes bibliographical references (pages 37-40).

Drydock extension : a 1980 underwater technology survey for extension of time between drydockings /

"Report no. CD-D-15-81."

A feasibility study of response techniques for discharge of hazardous chemicals that disperse through the water column /

Prepared for the U.S. Coast Guard, Office of Research and Development, Washington, D.C. under contract no. DOT-CG-51122-A.