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A three-dimensional optimal sawing system for small sawmills in central Appalachia

A three-dimensional (3D) log sawing optimization system was developed to perform 3D log generation, opening face determination, sawing simulation, and lumber grading. Superficial characteristics of logs such as length, large-end and small-end diameters, and external defects were collected from local sawmills. Internal log defect positions and shapes were predicted...

https://www.fs.usda.gov/treesearch/search?keywords=%22Generations%22&%3Bf%5B0%5D=author_facet%3A%22Krause%2C%20Katrina%22&f%5B0%5D=author_facet%3A%22Yocum%2C%20Chad%22&f%5B1%5D=author_facet%3A%22Runyon%2C%20Justin%22&f%5B2%5D=author_facet%3A%22Thomas%2C%20Ed%22&f%5B3%5D=author_facet%3A%22van%20Doorn%2C%20Natalie%22&f%5B4%5D=author_facet%3A%22Swanston%2C%20Chris%22&f%5B5%5D=author_facet%3A%22Burhans%2C%20Dirk%22

Author(s):

Wenshu Lin; Jingxin Wang; R. Edward Thomas

Year:

2011

Keywords:

Source:

In: Fei, Songlin; Lhotka, John M.; Stringer, Jeffrey W.; Gottschalk, Kurt W.; Miller, Gary W., eds. Proceedings, 17th central hardwood forest conference; 2010 April 5-7; Lexington, KY; Gen. Tech. Rep. NRS-P-78. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 67-76.

RAYSAW: a log sawing simulator for 3D laser-scanned hardwood logs

Laser scanning of hardwood logs provides detailed high-resolution imagery of log surfaces. Characteristics such as sweep, taper, and crook, as well as most surface defects, are visible to the eye in the scan data. In addition, models have been developed that predict interior knot size and position based on external defect information. Computerized processing of...

Author(s):

R. Edward Thomas

Year:

2013

Keywords:

Source:

In: Miller, Gary W.; Schuler, Thomas M.; Gottschalk, Kurt W.; Brooks, John R.; Grushecky, Shawn T.; Spong, Ben D.; Rentch, James S., eds. Proceedings, 18th Central Hardwood Forest Conference; 2012 March 26-28; Morgantown, WV; Gen. Tech. Rep. NRS-P-117. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 325-334.

Adapting to climate change

Federal agencies have led the development of adaptation principles and tools in forest ecosystems over the past decade. Successful adaptation efforts generally require organizations to: (1) develop science-management partnerships, (2) provide education on climate change science, (3) provide a toolkit of methods and processes for vulnerability assessment and adaptation...

Author(s):

Constance I. Millar; Christopher W. Swanston; David L. Peterson

Year:

2014

Keywords:

Source:

In: Peterson, D.L.; Vose, J.M.; Patel-Weynand, T., eds. Climate change and the United States forest. Dordrecht, The Netherlands: Springer: 183-222

Validation of the ROMI-RIP rough mill simulator

The USDA Forest Service's ROMI-RIP rough mill rip-first simulation program is a popular tool for analyzing rough mill conditions, determining more efficient rough mill practices, and finding optimal lumber board cut-up patterns. However, until now, the results generated by ROMI-RIP have not been rigorously compared to those of an actual rough mill. Validating the...

Author(s):

Edward R. Thomas; Urs Buehlmann

Year:

2002

Keywords:

Source:

Forest Products Journal 52(2):23-29

OPTIGRAMI V2 user's guide

OPTIGRAMI V2 is a computer program available for IBM persaonl computer with 80286 and higher processors. OPTIGRAMI V2 determines the least-cost lumber grade mix required to produce a given cutting order for clear parts from rough lumber of known grades in a crosscut-first rough mill operation. It is a user-friendly integrated application that includes optimization...

Author(s):

Penny S. Lawson; R. Edward Thomas; Elizabeth S Walker

Year:

1996

Keywords:

lumber, computer program, optimization

Source:

Gen. Tech. Rep. NE-222. Radnor, PA: U. S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 46p.

Defect detection on hardwood logs using high resolution three-dimensional laser scan data

The location, type, and severity of external defects on hardwood logs and skills are the primary indicators of overall log quality and value. External defects provide hints about the internal log characteristics. Defect data would improve the sawyer's ability to process logs such that a higher valued product (lumber) is generated. Using a high-resolution laser log...

Author(s):

Liya Thomas; Lamine Mili; Clifford A. Shaffer; Ed Thomas; Ed Thomas

Year:

2004

Keywords:

Source:

In: 2004 international conference on image processing; 2004 October 24-27; IEEE. 1: 243-246.

Factors affecting predation at songbird nests in old fields

We determined the effects of microhabitat, year, weather, time of season, stage of the nesting cycle, and brood parasitism on nest predation from a 7-year dataset on field sparrows (Spizella pusilla) and indigo buntings (Passerina cyanea) in central Missouri, USA. Year, site, and the interaction of species and 2-week interval of the season were important factors...

Author(s):

Dirk E. Burhans; Donald Dearborn; Frank R. III Thompson; John Faaborg

Year:

2002

Keywords:

Nests, Predation, Microhabitats, Birds, Phenology, Snakes, Seasonal variation

Source:

Journal of Wildlife Management. Vol. 66, no. 1 (2002).:p.240-249.

A comparison of point-count and mist-net detections of songbirds by habitat and time-of-season

We compared the results of point-count and mist-net surveys during the breeding and post-breeding seasons in four Missouri Ozark habitats: mature upland forest, mature riparian forest, 9- to 10-yr-old upland forest and 3- to 4-yr-old upland forest created by clearcutting. We determined whether differences in abundance estimates among habitats or between breeding and...

Author(s):

Rich W. Pagen; Frank R., III Thompson; Dirk E. Burhans

Year:

2002

Keywords:

forest habitat, habitat effects, Missouri, seasonal effects, survey methods

Source:

Journal of Field Ornithology 73(1):53-59

Estimating bark thicknesses of common Appalachian hardwoods

Knowing the thickness of bark along the stem of a tree is critical to accurately estimate residue and, more importantly, estimate the volume of solid wood available. Determining the volume or weight of bark for a log is important because bark and wood mass are typically separated while processing logs, and accurate determination of volume is problematic. Bark thickness...

Author(s):

R. Edward Thomas; Neal D. Bennett

Year:

2014

Keywords:

Source:

In: Groninger, John W.; Holzmueller, Eric J.; Nielsen, Clayton K.; Dey, Daniel C., eds. Proceedings, 19th Central Hardwood Forest Conference; 2014 March 10-12; Carbondale, IL. General Technical Report NRS-P-142. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 283-294.

Validation of an internal hardwood log defect prediction model

The type, size, and location of internal defects dictate the grade and value of lumber sawn from hardwood logs. However, acquiring internal defect knowledge with x-ray/computed-tomography or magnetic-resonance imaging technology can be expensive both in time and cost. An alternative approach uses prediction models based on correlations among external defect indicators...

Author(s):

R. Edward Thomas

Year:

2011

Keywords:

Source:

Plant defenses against parasitic plants show similarities to those induced by herbivores and pathogens

Herbivores and pathogens come quickly to mind when one thinks of the biotic challenges faced by plants. Important but less appreciated enemies are parasitic plants, which can have important consequences for the fitness and survival of their hosts. Our knowledge of plant perception, signaling and response to herbivores and pathogens has expanded rapidly in recent years...

Author(s):

Justin B. Runyon; Mark C. Mescher; Consuelo M. De Moraes

Year:

2010

Keywords:

Cuscuta, induced defenses, parasitic plant, jasmonic acid, salicylic acid, phytohormones, hypersensitive response, trichomes, defense signaling

Source:

Plant Signaling and Behavior. 5(8): 929-931.

Development of a 3D log sawing optimization system for small sawmills in central Appalachia, US

A 3D log sawing optimization system was developed to perform log generation, opening face determination, sawing simulation, and lumber grading using 3D modeling techniques. Heuristic and dynamic programming algorithms were used to determine opening face and grade sawing optimization. Positions and shapes of internal log defects were predicted using a model developed by...

Author(s):

Wenshu Lin; Jingxin Wang; Edward Thomas

Year:

2011

Keywords:

Heuristic, dynamic programming, grade sawing, modeling, optimization

Source:

Wood and Fiber Science. 43(4): 379-393.

Testing and analysis of internal hardwood log defect prediction models

The severity and location of internal defects determine the quality and value of lumber sawn from hardwood logs. Models have been developed to predict the size and position of internal defects based on external defect indicator measurements. These models were shown to predict approximately 80% of all internal knots based on external knot indicators. However, the size...

Author(s):

R. Edward Thomas

Year:

2011

Keywords:

Source:

In: Proceedings of the 3rd international scientific conference on hardwood processing; 2011 Oct. 16-18; Blackburg, VA. Blacksburg, VA: Virginia Polytechnic Institute and State University: 85-94.

ROMI 4.0: Rough mill simulator 4.0 users manual

The Rough MIll simulator (ROMI Version 4.0) is a computer software package for personal computers (PCs) that simulates current industrial practices for rip-first, chop-first, and rip and chop-first lumber processing. This guide shows how to set up the software; design, implement, and execute simulations; and examine the results. ROMI 4.0 accepts cutting bills with as...

Author(s):

R. Edward Thomas; Timo Grueneberg; Urs Buehlmann

Year:

2015

Keywords:

rough mill, cutting bill, simulation, hardware lumber

Source:

Gen. Tech. Rep. NRS-143. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 82 p.

A framework for assessing climate change vulnerability and identifying adaptation responses in the central hardwoods region

The Central Hardwood region contains a mosaic of forests, woodlands, savannas, and other ecosystems that will increasingly be affected by a changing climate over the next century. Understanding potential impacts is important to sustaining healthy forests under changing conditions. The objectives of the Climate Change Response Framework (forestadaptation.org) are to...

Author(s):

Patricia R. Butler; Leslie A. Brandt; Stephen D. Handler; Maria K. Janowiak; Patricia D. Shannon; Chris W. Swanston

Year:

2014

Keywords:

Source:

Accurately determining log and bark volumes of saw logs using high-resolution laser scan data

Accurately determining the volume of logs and bark is crucial to estimating the total expected value recovery from a log. Knowing the correct size and volume of a log helps to determine which processing method, if any, should be used on a given log. However, applying volume estimation methods consistently can be difficult. Errors in log measurement and oddly shaped...

Author(s):

R. Edward Thomas; Neal D. Bennett

Year:

2014

Keywords:

Source:

Vulnerability of forests of the Midwest and Northeast United States to climate change

Forests of the Midwest and Northeast significantly define the character, culture, and economy of this large region but face an uncertain future as the climate continues to change. Forests vary widely across the region, and vulnerabilities are strongly influenced by regional differences in climate impacts and adaptive capacity. Not all forests are vulnerable; longer...

Author(s):

Chris Swanston; Leslie A. Brandt; Maria K. Janowiak; Stephen D. Handler; Patricia Butler-Leopold; Louis Iverson; Frank R. Thompson; Todd A. Ontl; P. Danielle Shannon

Year:

2018

Keywords:

Source:

Climatic Change. 146(1-2): 103-116.

Climate-ready tree study – update for Central Valley communities

Trees in cities provide valuable ecosystem services that can improve quality of life, but also face a variety of stressors that can threaten these benefits. Urban forests are especially vulnerable to climate change stressors because predominant species may rely on irrigation and other intensive management practices, and rates of climate change may be more rapid and...

Author(s):

E.G. McPherson; A.M. Berry; N.S. van Doorn; J. Downer; J. Hartin; D. Haver; E. Teach

Year:

2017

Keywords:

climate change, climate stressors, tree selection

Source:

Western Arborist. 43: 44-51

Parasitism by Cuscuta pentagona attenuates host plant defenses against insect herbivores

Considerable research has examined plant responses to concurrent attack by herbivores and pathogens, but the effects of attack by parasitic plants, another important class of plant-feeding organisms, on plant defenses against other enemies has not been explored. We investigated how attack by the parasitic plant Cuscuta pentagona impacted tomato (<...>

Author(s):

Justin B. Runyon; Mark C. Mescher; Consuelo M. De Moraes

Year:

2008

Keywords:

parasitic plants, Cuscuta pentagona, host plant defense, Solanum lycopersicum

Source:

Plant Physiology. 146: 987-995.

Soil organic matter dynamics during 80 years of reforestation of tropical pastures

Our research takes advantage of a historical trend in natural reforestation of abandoned tropical pastures to examine changes in soil carbon (C) during 80 years of secondary forest regrowth. We combined a chronosequence...

Author(s):

Erika Marin-Spiotta; Whendee L. Silver; Christopher W. Swanston; Rebecca Ostertag

Year:

2009

Keywords:

carbon-13, density fractionation, nitrogen-15, Puerto Rico, secondary forests, succession

Source:

Global Change Biology. 15: 1584-1597.

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Total Publications in Treesearch: 53,194

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A three-dimensional optimal sawing system for small sawmills in central Appalachia

RAYSAW: a log sawing simulator for 3D laser-scanned hardwood logs

Adapting to climate change

Validation of the ROMI-RIP rough mill simulator

OPTIGRAMI V2 user's guide

Defect detection on hardwood logs using high resolution three-dimensional laser scan data

Factors affecting predation at songbird nests in old fields

A comparison of point-count and mist-net detections of songbirds by habitat and time-of-season

Estimating bark thicknesses of common Appalachian hardwoods

Validation of an internal hardwood log defect prediction model

Plant defenses against parasitic plants show similarities to those induced by herbivores and pathogens

Development of a 3D log sawing optimization system for small sawmills in central Appalachia, US

Testing and analysis of internal hardwood log defect prediction models

ROMI 4.0: Rough mill simulator 4.0 users manual

A framework for assessing climate change vulnerability and identifying adaptation responses in the central hardwoods region

Accurately determining log and bark volumes of saw logs using high-resolution laser scan data

Vulnerability of forests of the Midwest and Northeast United States to climate change

Climate-ready tree study – update for Central Valley communities

Parasitism by Cuscuta pentagona attenuates host plant defenses against insect herbivores

Soil organic matter dynamics during 80 years of reforestation of tropical pastures

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