نتایج جستجو برای: medium timber
تعداد نتایج: 244573 فیلتر نتایج به سال:
Wind and earthquake disasters in the world often cause billions of dollars of damage to buildings, most of which is to non-engineered buildings-especially homes. Wood-frame homes use connectors which exhibit partial rotational rigidity at the member ends, making analytical solutions difficult. This is due to the lack of information about the complex behavior of the connections used in this type...
In this paper, we describe the TIMBER XML database system implemented at University of Michigan. TIMBER was one of the first native XML database systems, designed from the ground up to store and query semi-structured data. A distinctive principle of TIMBER is its algebraic underpinning. Central contributions of the TIMBER project include: (1) tree algebras that capture the structural nature of ...
This article presents information on employment and payroll generated per unit volume of timber or wood fiber processed by the various manufacturing sectors of Montana's forest products industry for 19871989. Average employment ranged from a high of 117 workers per million cubic feet (mmcf) of wood fiber processed at house log plants, to a low of 12 workers per mmcf at stud mills. Employment-co...
-Timber rattlesnakes (Crotalus horrid=) and Louisiana pine snakes (Pituophis melanoleucus ruthvenq are large-bodied snakes occurring on the West Gulf Coastal Plain. Both species are thought to be declining .due to increasing habitat alteration. Timber rattlesnakes occur in closed canopy hardwood and pine-hardwood forests, and Louisiana pine snakes in pine forests on sandy, well drained soils. W...
North Carolina’s forest disturbance and timber production assessed using time series Landsat observations Chengquan Huang, Pui-Yu Ling & Zhiliang Zhu To cite this article: Chengquan Huang, Pui-Yu Ling & Zhiliang Zhu (2015): North Carolina’s forest disturbance and timber production assessed using time series Landsat observations, International Journal of Digital Earth, DOI: 10.1080/17538947.2015...
Toward sustainable management: Southern Africa’s Afromontane, and Western Australia’s jarrah forests
We review the history of forest management in two southern hemisphere forest types: Western Australia’s jarrah Eucalyptus marginata forests and the Afromontane forests of southern Africa to determine approaches for achieving sustainable forest management. We argue that despite major differences in the ecology and biogeography of these two forest types, a shared pattern in the history of exploit...
Timber harvesting has been shown to have both positive and negative effects on forest dwelling species. We examined the immediate effects of timber harvests (clearcuts and group selection openings) on ectotherm behavior, using the eastern box turtle as a model. We monitored the movement and thermal ecology of 50 adult box turtles using radiotelemetry from May-October for two years prior to, and...
In this study, the support vector machine (SVM) was applied and validated by using the geographic information system (GIS) in order to map landslide susceptibility. In order to test the usefulness and effectiveness of the SVM, two study areas were carefully selected: the PyeongChang and Inje areas of Gangwon Province, Korea. This is because, not only did many landslides (2098 in PyeongChang and...
In Central Europe transportation accounts for an estimated 30% of the total costs of round timber and is an essential element of cost. In this paper, Tabu Search based methods for solving the Timber Transport Vehicle Routing Problem (TTVRP) are presented. The TTVRP uses solutions of preceding optimization problems as input that are obtained with standard solver software. The presented methods d...
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