منابع مشابه
Impacts of Mechanical Tree Felling on Development of Water tipelo Regeneration in the Mobile Delta, Alabama
Two water tupelo (Nyssa aquatica L.) stands in the Mobile Delta of Alabama were selected to test the hypothesis that mechanizedfelling does not reduce establishment and growth of natural water tupelo regeneration relative to traditional tree felling with chainsaws. To test the hypothesis, we established six, 2 ac treatment plots in each of two blocks on each of two sites, and randomly assigned ...
متن کاملTree regeneration in felling and natural treefall disturbances in a semideciduous tropical forest in Mexico
Tree regeneration was compared among closed-canopy sites and 4±11-year old natural and felling gaps in a selectively logged semideciduous tropical forest in southeastern Mexico. Closed-canopy sites and gaps were selected strati®ed randomly. In addition, all large natural and felling gaps encountered were sampled. All stems 5 cm dbh were sampled in sets of 10 m plots in closed-canopy sites and g...
متن کاملPerformance, Capability and Costs of Motor-Manual Tree Felling in Hyrcanian Hardwood Forest
Nacrtak Motor-manual tree felling is the most labor-intensive component of all harvesting operations and frequently represents a bottleneck in wood production. The study of motor-manual tree felling was carried out in two compartments in the Namkhaneh district of Kheyrud Forest. The objects of this study were as follows: time study of tree felling operations, estimate of chainsaw productivity a...
متن کاملUsing tree-grammars for training set expansion in page classification
In this paper we describe a method for the expansion of training sets made by XY trees representing page layout. This approach is appropriate when dealing with page classification based on MXY tree page representations. The basic idea is the use of tree grammars to model the variations in the tree which are caused by segmentation algorithms. A set of general grammatical rules are defined and us...
متن کاملTowards Safe Coordination in Multi-agent Systems
Conservative design is the ability of an individual agent to ensure predictability of its overall performance even if some of its actions and interactions may be inherently less predictable or even completely unpredictable. In this paper, we describe the importance of conservative design in cooperative multi-agent systems and briefly characterize the challenges that need to be addressed to achi...
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ژورنال
عنوان ژورنال: ROBOMECH Journal
سال: 2017
ISSN: 2197-4225
DOI: 10.1186/s40648-017-0075-5