Results 21 to 30 of about 565,129 (288)
Pre-commercial thinning of beech (Fagus sylvatica L.) [PDF]
, 2006 This paper reports early effects of stump height on the growth and natural pruning of potential crop trees after pre-commercial thinning of a young stand of naturally regenerated beech (Fagus sylvatica L.) in Denmark.
Sørensen, Ib Holmgård +6 more
core +1 more source
Study on background segment and edge detection of fruit image using machine vision
浙江大学学报. 农业与生命科学版, 2000 In the light of the characteristics of gray level variations in the image, bimodal gray region segment method was adopted to segment the pear from the background in the three images (red, green, blue). The best segment result was appeared in B gray level
YING Yi-bin
doaj +1 more source
Journal of Forest Science, 2020 Because of generally small log piles, loading forwarders during thinning is time consuming. The Assortment Grapple, an innovative grapple with an extra pair of claws which facilitates the handling of two assortments during one loading crane cycle, has ...
Jussi Manner +4 more
doaj +1 more source
A Conway–Maxwell–Poisson-Binomial AR(1) Model for Bounded Time Series Data
Entropy, 2023 Binomial autoregressive models are frequently used for modeling bounded time series counts. However, they are not well developed for more complex bounded time series counts of the occurrence of n exchangeable and dependent units, which are becoming ...
Huaping Chen, Jiayue Zhang, Xiufang Liu
doaj +1 more source
New technical and alternative silvicultural approaches to pre-commercial thinning [PDF]
, 2004 In the last decade relative pre-commercial thinning costs have increased, as a proportion of total silvicultural costs, and the annual area treated with pre-commercial thinning has decreased, partly because stands are denser and the development of tools ...
Ligné, Daniel
core +1 more source
Thinning algorithm using hypergraph based morphological operators [PDF]
2015 IEEE International Advance Computing Conference (IACC), 2015 Advance Computing Conference (IACC), 2015 IEEE International,Banglore ...
R. P. Prakash +2 more
openaire +3 more sources
Silva Fennica, 2010 At present, only a small proportion of the potential extractable bioenergy from young dense forests in Sweden is utilized. The conventional mechanized first thinning systems used in such stands suffer from low productivity, so the operation is only ...
Bergström, Dan +2 more
doaj +1 more source
The growth response of planted red pine (Pinus Resinosa) to alternative thinning regimes [PDF]
, 2012 Red pine (Pinus resinosa Ait.) plantations have been established in Michigan with expectations of mixed final product goals: pulpwood, boltwood and possibly sawlogs.
Len, Jolanta Agnieszka
core +1 more source
Forest@, 2010 Thinning is an essential practice in Mediterranean pine forests management but is rarely applied because of the high harvesting costs. The new market of bioenergy products could give a profit to wood biomass harvesting activities, though the drawbacks of
Baldini S, Di Fulvio F, Laudati G
doaj +1 more source
First-Order Integer-Valued Moving Average Process with Power Series Innovations
Journal of Statistical Theory and Applications (JSTA), 2020 In this paper, we introduce a first-order nonnegative integer-valued moving average process with power series innovations based on a Poisson thinning operator (PINMAPS(1)) for modeling overdispersed, equidispersed and underdispersed count time series ...
Eisa Mahmoudi, Ameneh Rostami
doaj +1 more source