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Author: Saeed Salehi
Publisher: VDM Verlag Dr. Muller
Keywords: languages, tree, varieties, theory, structural
Number of Pages: 35
Published: 2010-02
ISBN-10: 3639230558
ISBN-13: 9783639230550

Trees are among the most fundamental and ubiquitous structures in mathematics and computer science. The notion of "tree" appears in many seemingly different areas from graph theory to universal algebra to logic. Tree languages and automata on trees have been studied extensively since the 1960s from both a purely mathematical and application point of view. Though the theory of tree automata and tree languages may have come into existence by generalizing string automata and languages, but it could not have stayed alive for long as a mere generalization. Apart from its intrinsic interest, this th

Author: Kathleen Geier-Hayes
Publisher: DIANE Publishing
Keywords: guide, silviculturists, length, shade, individual, tree, determining
Number of Pages: 64
Published: 1998-05
ISBN-10: 0788143034
ISBN-13: 9780788143038

Shade may be critical through the summer for conifer regeneration survival on warm, dry sites. Shadow lengths vary by latitude, aspect, & slope; southerly aspects have shorter shadows than northerly aspects at the same time. Differently shaped trees also produce different shadow lengths. This guide provides silviculturists with a method for determining tree shadow lengths in a straight line from the tree's base to the shadow tip from southern Utah to northern Idaho for May 10 through Oct. 11 on different slopes, aspects, & for two tree shapes. Charts & tables.

Author: Leslie E. Owen
Publisher: Tradewind Books
Keywords: frogs, tree, pacific
Number of Pages: 7
Published: 2002-09-01
ISBN-10: 1896580424
ISBN-13: 9781896580425

Discover a year in the life of the Pacific tree frog whose habitat reaches from San Diego to British Columbia. Spectacularly illustrated, this book is perfect for parents, teachers and children of all ages.

Author: Sharon M. Hood
Publisher: DIANE Publishing
Keywords: dependent, forests, synthesis, fire, unburned, old, tree, mortality, mitigating
Number of Pages: 80
Published: 2011-01
ISBN-10: 1437939031
ISBN-13: 9781437939033

This is a print on demand edition of a hard to find publication. This report synthesizes the literature and current state of knowledge pertaining to re-introducing fire in stands where it has been excluded for long periods and the impact of these introductory fires on overstory tree injury and mortality. Only forested ecosystems in the United States that are adapted to survive frequent fire are included. Treatment options that minimize large-diameter and old tree injury and mortality in areas with deep duff and methods to manage and reduce duff accumulations are discussed. Pertinent background

Author: E. Gregory McPherson
Publisher: DIANE Publishing
Keywords: cover, assessment, canopy, tree, angeles, million, los
Number of Pages: 64
Published: 2010-11
ISBN-10: 1437936067
ISBN-13: 9781437936063

The Million Trees LA initiative intends to chart a course for sustainable growth through planting and stewardship of trees. This study measures LA's existing tree canopy cover (TCC), determines if space exists for 1 million additional trees, and estimates future benefits from the planting. Benefits were forecast for planting of 1 million trees between 2006 and 2010, and their growth and mortality were projected until 2040. LA's existing TCC was 21%. There is potential to add 2.5 million additional trees to the existing population of 10.8 million, but only 1.3 million of the potential tree site

Author: Joan H. Miller
Publisher: World Bank Publications
Keywords: tree, seedling, nurseries, media, growing, compost, based, organic
Number of Pages: 94
Published: 1995-05
ISBN-10: 082133039X
ISBN-13: 9780821330395

World Bank Technical Paper No. 264. Past research into tree planting has revealed that inadequate attention is given to root development in seedling containers. This study recommends the development of a high quality potting mediato give plants the

Author: E. R. Boa
Publisher: Food & Agriculture Org.
Keywords: interpretation, symptoms, damage, recognition, trees, guide, state, health, illustrated
Number of Pages: 60
Published: 2003
ISBN-10: 9251050201
ISBN-13: 9789251050200

Insect pests and diseases routinely affect the health of trees, and major outbreaks can have catastrophic environmental and economic impacts. The effective management of all tree health problems depends on their early detection. This guide provides 140 photographs of symptoms from more than 50 tree species to be used as a basis for demonstrating the effects of pest (biotic) and non-living (abiotic) influences on trees. It is not an identification guide to insects pests and diseases of trees, but aims to help people make visual assessments of tree health problems and to provide a preliminary di
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