Results 21 to 30 of about 20,742,811 (257)

The exploration of China's National Park System Pilot Project: Taking Northeast China Tiger and Leopard National Park System Pilot Area as an example

open access: yesInternational Journal of Geoheritage and Parks, 2020
In December 2016, Northeast China Tiger and Leopard National Park started the pilot work. It is the only pilot area that is directly managed by the central government. Northeast China Tiger and Leopard National Park System Pilot Area undertakes two major
Tianyu Song
doaj   +1 more source

Inventory of the records of the National Forest Products Association [PDF]

open access: yes
This inventory describes the records of the National Forest Products Association (NFPA) that are deposited with the Forest History Society in Santa Cruz, California.
Forest History Society   +1 more
core   +6 more sources

Some methodological aspects of the National Forest Inventory and Monitoring in Slovakia

open access: yesJournal of Forest Science, 2008
The work presents the conceptual information about the National Forest Inventory and Monitoring in Slovakia. It introduces some methodological approaches to the field data collection (determination of tree heights by two-phase method, regression formulas
Š. Šmelko, J. Merganič
doaj   +1 more source

Romanian legal management rules limit wood production in Norway spruce and beech forests

open access: yesForest Ecosystems, 2016
Background The quantitative impact of forest management on forests’ wood resource was evaluated for Picea and Fagus mixed forests. The effects on the productivity of tendering operations, thinnings and rotation length have seldom been directly ...
Olivier Bouriaud   +4 more
doaj   +1 more source

The Laser Vegetation Detecting Sensor: A Full Waveform, Large-Footprint, Airborne Laser Altimeter for Monitoring Forest Resources

open access: yesSensors, 2019
The use of satellite-borne large-footprint LiDAR (light detection and ranging) systems allows for the acquisition of forest monitoring data. This paper mainly describes the design, use, operating principles, installation and data properties of the new ...
Yang Hu   +6 more
doaj   +1 more source

Number Preference as a Source of Measurement Error in the U.S. National Forest Inventory

open access: yes, 2023
Number preference, i.e., the human tendency to gravitate toward or away from specific numbers, is a potential source of measurement error in forest inventory. Identifying its presence is an important step to ensure unbiased results.
KaDonna C. Randolph
core   +1 more source

Upper stem diameter and volume prediction strategies in the National Forest Inventory of Finland [PDF]

open access: yes, 2023
In forest inventories, field data are needed for the prediction of tree volumes. However, gathering field data requires resources, such as labour, equipment, and data management operations.
Holopainen, Markus   +5 more
core   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin   +12 more
wiley   +1 more source

NFI plots as complementary reference data in forest inventory based on airborne laser scanning and aerial photography in Finland

open access: yesSilva Fennica, 2014
In Finland, there are currently two, parallel sample-plot-based forest inventory systems, which differ in their methodologies, sampling designs, and objectives.
Tuominen, Sakari   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

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