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Single Tree Classification Using Multi-Temporal ALS Data and CIR Imagery in Mixed Old-Growth Forest in Poland
tree species classification airborne laser scanning (ALS) colour-infrared (CIR) aerial images multi-temporal data individual tree random forest (RF)
2023/12/5
Tree species classification is important for a variety of environmental applications, including biodiversity monitoring, wildfire risk assessment, ecosystem services assessment, and sustainable forest...
Structural Features of a Post-Clear-Cutting Ecotone between 90-Year-Old Bilberry Spruce Forest and 35-Year-Old Herbs-Forbs Deciduous Stand
ecotone complex bilberry-type spruce forest deciduous stand clear-cut edge effect ground vegetation epiphytes tree fine root biomass
2023/12/1
In a natural regeneration process, a community dominated by birch and aspen forms in the site 35 years after a bilberry-type spruce stand is logged down. The newly formed ecotone complex consists of f...
Century-old problem solved with first-ever 3D atomic imaging of an amorphous solid（图）
Century-old problem solved first-ever 3D atomic imaging amorphous solid
2021/4/16
Glass, rubber and plastics all belong to a class of matter called amorphous solids. In spite of how common they are in our everyday lives, amorphous solids have long posed a challenge to scientists.Si...
Fossil evidence of 'hibernation-like' state in 250-million-year-old Antarctic animal（图）
Fossil hibernation-like state 250-million-year-old Antarctic animal
2020/9/4
Hibernation is a familiar feature on Earth today. Many animals -- especially those that live close to or in polar regions -- hibernate to get through tough winter months when food is scarce, temperatu...
The Waxy (Wx) gene responsible for amylose synthesis is an old but widely used target in quality improvements of starchy crops. New genome editing strategies were recently reported to create novel and...
300-million-year-old fish resembles a sturgeon but took a different evolutionary path（图）
300-million-year-old resembles sturgeon different evolutionary path
2020/7/3
Sturgeon, long-lived, bottom-dwelling fish, are often described as living fossils. Their form has remained relatively constant, despite hundreds of millions of years of evolution.In a National Sc...
Tree Communities in Three-Year-Old Post-Mining Sites Under Different Forest Restoration Techniques in the Brazilian Amazon
dispersal importance value index pollination seed sources
2024/2/4
Forest loss and degradation in the Brazilian Amazon due to mining activities has been intense for many years. To reverse this situation, a range of restoration programs for deforested and degraded are...
Researchers discover 66-million-year-old badger-like animal（图）
Researchers 66-million-year-old badger-like animal
2020/5/9
In evolutionary terms, islands are the stuff of weirdness. It is on islands where animals evolve in isolation, often for millions of years, with different food sources, competitors, predators, and par...
3.8-million-year-old fossil cranium unveils more about human ancestry（图）
3.8-million-year-old fossil cranium human ancestry
2019/10/18
In 2016, researchers working in the Afar region of Ethiopia, some 35 miles away from Hadar, the region in which "Lucy," the famous Australopithecus afarensis human ancestor, was found, discovered a ne...
On the Complexity of Collision Resistant Hash Functions: New and Old Black-Box Separations
Collision Resistance Statistical Zero Knowledge Black box separations
2019/6/12
The complexity of collision-resistant hash functions has been long studied in the theory of cryptography. While we often think about them as a Minicrypt primitive, black-box separations demonstrate th...
Growth-mortality attributes and species composition determine carbon sequestration and dynamics of old stand types in the Acadian Forest of New Brunswick, Canada
Permanentsampleplot Biomass Speciesmix Mortality Netcarbonchange Openstandmodel
2024/2/28
Key messageWe used 20years of plot data to analyze the influence of tree growth-mortality balance and species mix on the potential of old stands to sequester carbon from the atmosphere and store carbo...
Comparing Student Performance on the Old vs New Versions of the NAPLEX
Comparing Student Performance New Versions
2018/11/22
Objective. To determine if the new 2016 version of the North American Pharmacy Licensure Examination (NAPLEX) affected scores when controlling for student performance on other measures using data from...
DOCUMENTATION OF OLD TURKIC RUNIC INSCRIPTIONS OF THE ALTAI MOUNTAINS USING PHOTOGRAMMETRIC TECHNOLOGY
3D documentation Altai Mountains Digital Photogrammetry Runic inscriptions Turks
2018/3/6
Old Turkic runic inscriptions of the Altai Mountains (8th–9th centuries AD) were digitized in the course of this project to be preserved in the current state on the Web and deciphered by linguistic ex...
Counting Chromosomes:Plant Scientists Solve A Century-Old Mystery About Reproduction（图）
Counting Chromosomes Plant Scientists Century-Old Mystery Reproduction
2018/2/1
Counting is vital in nature. Counting chromosomes is something that most animals, plants and even single-celled organisms need to know how to do to assure viability and to reproduce. Today, a team of ...
New (and Old) Proof Systems for Lattice Problems
lattices (noninteractive) statistical zero knowledge smoothing parameter
2017/12/25
We continue the study of statistical zero-knowledge (SZK) proofs, both interactive and noninteractive, for computational problems on point lattices. We are particularly interested in the problem GapSP...