the implementation of different silvicultural systems can be effective on different characteristics of forest stands, such as stand structure and diameter distribution of trees. this study was carried out in shafaroud forests of gilan province of northern iran. the objectives of this research were 1) to evaluate the suitability of different probability distribution functions, including weibull,...

In this paper we present a cutting plane algorithm for the Set Covering problem. Cutting planes are generated by a “general” (i.e. not based on the “template paradigm”) separation algorithm based on the following idea: i) identify a suitably small subproblem defined by a subset of the constraints of the formulation; ii) run an exact separation algorithm over the subproblem to produce a violated...

Efficient cutting design is essential to reduce the costs of production in the open die forging industry. This article discusses a slab cutting design problem that occurs when parallel piped items are cut from raw material steel slabs with varying widths and lengths to meet a volume requirement. The problem is modeled as a two-dimensional cutting stock problem or bin packing problem with size-c...

We prove a general lemma on the existence of (1/r)-cuttings of geometric objects in Ed that satisfy certain properties. We use this lemma to construct (1/r)-cuttings of small size for arrangements of line segments in the plane and arrangements of triangles in 3-space; for line segments in the plane we obtain a cutting of size O(r+Ar2/n2), and for triangles in 3-space our cutting has size O(r2+ε...

We prove a general lemma on the existence of {I/r)-cuttings of geometric objects in Ed that satisfy certain properties. We use this lemma to construct (I/r)-cuttings of (asymptotically) optimal size for arrangements of line segments in the plane and arrangements oftriangles in 3-space; for line segments in the plane we obtain a cutting of size O(r + Ar2/n2 ), and for triangles in 3-space our cu...

The use of cutting fluids in machining operations is being carefully scrutinized by industry for several reasons, including its overall cost in the manufacturing process and its impact on worker health. Given the concerns associated with the use of cutting fluids, a number of experimental and analytical research efforts are being conducted to gain an understanding of the role of these fluids in...

An effort carried out to find out the smaller size of cuttings for propagation ofMorus alba in Experimental area, Department of Forestry, Range Management and Wildlife, University of Agriculture, Faisalabad, 2005. Different size of cuttings i.e.5 cm, 10 cm, 15 cm and 20 cm were planted in polythene tubes of 9 cm x 18 cm. The attempt was also made to compare the performance of cuttings outdoor a...

The side flow of material in nano cutting is one of the most important factors that deteriorate the machined surface quality. The effects of the crystallographic orientation, feed, and the cutting tool geometry, including tool edge radius, rake angle and inclination angle, on the side flow are investigated employing molecular dynamics simulation. The results show that the stagnation region is f...

an effort carried out to find out the smaller size of cuttings for propagation ofmorus alba in experimental area, department of forestry, range management and wildlife, university of agriculture, faisalabad, 2005. different size of cuttings i.e.5 cm, 10 cm, 15 cm and 20 cm were planted in polythene tubes of 9 cm x 18 cm. the attempt was also made to compare the performance of cuttings outdoor a...

* Corresponding author. E-mail address: [email protected] (T.E. Gr http://dx.doi.org/10.1016/j.biosystemseng.201 1537-5110/© 2015 IAgrE. Published by Elsevie Energycane is a promising bioenergy crop for warm south-eastern US regions and existing sugarcane machinery is being adapted for energycane cultivation. Because of energycane's comparatively higher fibre content and smaller stem diameters...