Results 21 to 30 of about 47,186 (208)

Construction of Three Branches Fractal Trees Using Iterated Function System

open access: yesJurnal Ilmu Dasar, 2022
There are two types of fractal: natural fractals and fractals set. The examples of natural fractals are trees, leaves, ferns, mountain, and coastlines. One of the examples of fractals set is Pythagorean tree.
Kosala Dwidja Purnomo   +2 more
doaj   +1 more source

Living with endangered species: Collection of tree ferns in the forest-reserve of Marilog district, Southern Philippines

open access: yesTrees, Forests and People, 2020
Scaly tree ferns are locally known as Anonotong in Southern Philippines and considered as endangered species. Its collection is prohibited, but along the highway of Marilog District, Davao City, its trading is very obvious. Hence, the study was conducted
Raquelyn J. Dadang   +4 more
doaj   +1 more source

Robustness of Random Forest-based gene selection methods [PDF]

open access: yes, 2013
Gene selection is an important part of microarray data analysis because it provides information that can lead to a better mechanistic understanding of an investigated phenomenon.
Kursa, Miron B.
core   +2 more sources

Boosted Random ferns for object detection [PDF]

open access: yes, 2018
© 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Andrade-Cetto, Juan   +3 more
core   +2 more sources

Geoconservation and Geotourism on Fossil Forest of the Aragoncillo Range, Molina-Alto Tajo UNESCO Global Geopark (central Spain) [PDF]

open access: yesGeoconservation Research, 2021
The Fossil Forest of the Aragoncillo Range is one of several paleontological sites of exceptional scientific value in the Sierra de Selas (Province of Guadalajara, central Spain).
Yolanda Sanchez Moya   +3 more
doaj   +1 more source

El cultivo in vitro de esporas y los aspectos reproductivos del helecho anual Anogramma chaerophylla (Pteridaceae) [PDF]

open access: yes, 2016
Anogramma chaerophylla pertenece a un género de helechos con esporofitos anuales y gametofitos potencialmente perennes. En el área de estudio, la Reserva Natural Punta Lara, la vegetación crece bajo estrés debido principalmente a la contaminación y la ...
Berrueta, Pedro Cayetano   +5 more
core   +3 more sources

Species richness of Cyatheales in the upper Santo Domingo Canyon, Antioquia, Colombia [PDF]

open access: yesCheck List
The Regional Protective Forest Reserve of the Canyons of the Melcocho and Santo Domingo Rivers in eastern Antioquia, Colombia, spans 26,533 ha with elevations from 706 to 2,937 m above sea level.
Andrés Montoya-López, Marcus Lehnert
doaj   +3 more sources

Distribution of Ploidy Level on Adiantumdiaphanum Blume at Various Altitudes in Probolinggo

open access: yesBiosfer: Jurnal Tadris Biologi, 2019
Ferns are indicated could become polyploid organism due to altitude effect. In this research, the distribution of ploidy level on AdiantumdiaphanumBlume based on difference altitude was studied.
Ade Rezi Amelia, Ahmad Fauzi
doaj   +1 more source

Geochemistry, petrology, and palynology of the Princess No. 3 coal, Greenup County, Kentucky

open access: yesInternational Journal of Coal Science & Technology, 2020
The high volatile C bituminous-rank, Bolsovian-age Princess No. 3 coal, a correlative of the heavily-mined Hazard No. 7 coal and the Peach Orchard and Coalburg Lower Split coals, was investigated three sites at a mine in Greenup County, Kentucky.
Madison M. Hood   +3 more
doaj   +1 more source

The scaly tree ferns (Cyatheaceae-Polypodiopsida) of Brazil

open access: yesActa Botânica Brasílica, 2016
A synopsis of all scaly tree fern species (Cyatheaceae) occurring in Brazil is presented. We recognize 51 species in three genera [Sphaeropteris one species, Alsophila four species (one subspecies, two varieties), and Cyathea 45 species (one variety ...
Anna Weigand, Marcus Lehnert
doaj   +1 more source

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