Results 61 to 70 of about 699,139 (244)

PENGARUH POLA PENGGERGAJIAN TERHADAP RENDEMEN DAN WAKTU MENGGERGAJI KAYU MERANTI (SHOREA SPP.) *)

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
The  effects  of sawing pattern on recovery  and sawing   time   was studied  using  72 logs of meranti  (Shorea spp.).  The logs were divided  into  4 grades  i.e., Prime, First,  Second  and Local, each group consisting of 18 logs.
Osly Rachman   +2 more
doaj   +1 more source

Reconstruction of critical coalbed methane logs with principal component regression model: A case study

open access: yesEnergy Exploration & Exploitation, 2020
Wireline logging plays a critical role in coalbed methane exploration. However, the lack of crucial log data, such as neutron and sonic logs, makes coalbed methane exploration difficult.
Wan Li   +4 more
doaj   +1 more source

Determining Factors Behind the PageRank Log-Log Plot [PDF]

open access: yes, 2007
We study the relation between PageRank and other parameters of information networks such as in-degree, out-degree, and the fraction of dangling nodes. We model this relation through a stochastic equation inspired by the original definition of PageRank.
Volkovich, Yana   +2 more
openaire   +3 more sources

Lumber Recovery Efficiency among Selected Sawmills in Akure, Nigeria

open access: yesDrvna Industrija, 2012
This study was carried out to investigate the efficiency of lumber recovery among selected sawmills in Akure metropolis. Measurements were carried out before and after log conversion to estimate the volume of sawn timber and wood residues generated from ...
Samuel Oluyinka Olaniran   +2 more
doaj  

Bell Numbers, Log-Concavity, and Log-Convexity

open access: yesActa Applicandae Mathematica, 2000
Let $\{b_{k}(n)\}_{n=0}^{\infty}$ be the Bell numbers of order $k$. It is proved that the sequence $\{b_{k}(n)/n!\}_{n=0}^{\infty}$ is log-concave and the sequence $\{b_{k}(n)\}_{n=0}^{\infty}$ is log-convex, or equivalently, the following inequalities hold for all $n\geq 0$, $$1\leq {b_{k}(n+2) b_{k}(n) \over b_{k}(n+1)^{2}} \leq {n+2 \over n+1 ...
Asai, Nobuhiro   +2 more
openaire   +2 more sources

Occurrence of decay in aspen logs

open access: yesSilva Fennica, 1978
At three Finnish match factories 1,629 aspen logs were measured (see Kärkkäinen and Salmi 1978). When the estimation was based on the condition of the butt cross section of a log, less than half of the logs were sound without any discoloration or decay.
Kärkkäinen, Matti
doaj   +1 more source

Event Log Privacy Based on Differential Petri Nets

open access: yesApplied Artificial Intelligence, 2023
Process mining uses event logs to improve business processes, but such logs may contain privacy information. One popular research problem is the privacy protection of event logs.
Daoyu Kan, Xianwen Fang, Ziyou Gong
doaj   +1 more source

Log–canonical forms and log canonical singularities

open access: yesMathematische Nachrichten, 2003
AbstractFor a normal subvarietyVof ℂnwith a good ℂ*–action we give a simple characterization for when it has only log canonical, log terminal or rational singularities. Moreover we are able to give formulas for the plurigenera of isolated singular points of such varieties and of the logarithmic Kodaira dimension ofV\{0}.
Zaidenberg, Mikhail, Flenner, Hubert
openaire   +4 more sources

Determination of conversion factors for pine and spruce logs in stacks

open access: yesLeśne Prace Badawcze, 2019
The aim of this article was to determine the conversion factors for stacked pine and spruce logs with a length of 3–6 m. To this end, we measured stacks and their logs of a total of 3322.12 steres of pine logs and 1468.46 steres of spruce logs.
Jodłowski Krzysztof, Witkowska Joanna
doaj   +1 more source

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