A Collection of Log Rules U.S.D.A
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Accuracy of Smartphone Applications in the Field Measurements of Tree Height
Folia Forestalia Polonica, series A, 2015, Vol. 57 (4), 240–244 SHORT COMMUNICATION DOI: 10.1515/ffp-2015-0025 Accuracy of smartphone applications in the field measurements of tree height Szymon Bijak , Jakub Sarzyński Warsaw University of Sciences-SGGW, Department of Dendrometry and Forest Productivity, Nowoursynowska 159, 02-776 Warsaw, Poland, phone: +48 22 5938093, e-mail: [email protected] AbstrAct As tree height is one of the important variables measured in forestry, much effort is made to provide its fast, easy and accurate determination. We analysed precision of two widely available smartphone applications (Smart Measure and Measure Height) during the field measurements of tree height. The data was collected in three Scots pine stands in central Poland. We found negative systematic error of both tested applications regardless the distance of the measure- ment (15 or 20 m). RMSE values of the height estimates varied from 1.01 to 2.46 m depending on the application used and the distance of the measurement. Value of the calculated absolute and relative errors significantly (p < 0.015) positively depended on the actual height of the measured trees and was more diverse for higher trees. Smartphone applications seem to be promising measurement tool for tree height determination, however as for the time being they require improvement before wider introduction into the forest practice. Key words accuracy, tree height, smartphone, hypsometer, mobile applications IntroductIon Rapid development of the mobile techniques has in- troduced smartphones also into the forestry. Many ap- Tree height is one of the most often determined vari- plications that enable various types of measurements or ables in the forest inventory and in the quantitative calculations have appeared on the market (Hemery 2011, assessment of forest biomass, carbon stocks, growth, 2012). -
The Metric System: America Measures Up. 1979 Edition. INSTITUTION Naval Education and Training Command, Washington, D.C
DOCONENT RESUME ED 191 707 031 '926 AUTHOR Andersonv.Glen: Gallagher, Paul TITLE The Metric System: America Measures Up. 1979 Edition. INSTITUTION Naval Education and Training Command, Washington, D.C. REPORT NO NAVEDTRA,.475-01-00-79 PUB CATE 1 79 NOTE 101p. .AVAILABLE FROM Superintendent of Documents, U.S. Government Printing .Office, Washington, DC 2040Z (Stock Number 0507-LP-4.75-0010; No prise quoted). E'DES PRICE MF01/PC05 Plus Postage. DESCRIPTORS Cartoons; Decimal Fractions: Mathematical Concepts; *Mathematic Education: Mathem'atics Instruction,: Mathematics Materials; *Measurement; *Metric System; Postsecondary Education; *Resource Materials; *Science Education; Student Attitudes: *Textbooks; Visual Aids' ABSTRACT This training manual is designed to introduce and assist naval personnel it the conversion from theEnglish system of measurement to the metric system of measurement. The bcokteliswhat the "move to metrics" is all,about, and details why the changeto the metric system is necessary. Individual chaPtersare devoted to how the metric system will affect the average person, how the five basic units of the system work, and additional informationon technical applications of metric measurement. The publication alsocontains conversion tables, a glcssary of metric system terms,andguides proper usage in spelling, punctuation, and pronunciation, of the language of the metric, system. (MP) ************************************.******i**************************** * Reproductions supplied by EDRS are the best thatcan be made * * from -
Metric System Units of Length
Math 0300 METRIC SYSTEM UNITS OF LENGTH Þ To convert units of length in the metric system of measurement The basic unit of length in the metric system is the meter. All units of length in the metric system are derived from the meter. The prefix “centi-“means one hundredth. 1 centimeter=1 one-hundredth of a meter kilo- = 1000 1 kilometer (km) = 1000 meters (m) hecto- = 100 1 hectometer (hm) = 100 m deca- = 10 1 decameter (dam) = 10 m 1 meter (m) = 1 m deci- = 0.1 1 decimeter (dm) = 0.1 m centi- = 0.01 1 centimeter (cm) = 0.01 m milli- = 0.001 1 millimeter (mm) = 0.001 m Conversion between units of length in the metric system involves moving the decimal point to the right or to the left. Listing the units in order from largest to smallest will indicate how many places to move the decimal point and in which direction. Example 1: To convert 4200 cm to meters, write the units in order from largest to smallest. km hm dam m dm cm mm Converting cm to m requires moving 4 2 . 0 0 2 positions to the left. Move the decimal point the same number of places and in the same direction (to the left). So 4200 cm = 42.00 m A metric measurement involving two units is customarily written in terms of one unit. Convert the smaller unit to the larger unit and then add. Example 2: To convert 8 km 32 m to kilometers First convert 32 m to kilometers. km hm dam m dm cm mm Converting m to km requires moving 0 . -
Lesson 1: Length English Vs
Lesson 1: Length English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer B. 1 yard or 1 meter C. 1 inch or 1 centimeter English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer 1 mile B. 1 yard or 1 meter C. 1 inch or 1 centimeter 1.6 kilometers English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer 1 mile B. 1 yard or 1 meter C. 1 inch or 1 centimeter 1.6 kilometers 1 yard = 0.9444 meters English vs. Metric Units Which is longer? A. 1 mile or 1 kilometer 1 mile B. 1 yard or 1 meter C. 1 inch or 1 centimeter 1.6 kilometers 1 inch = 2.54 centimeters 1 yard = 0.9444 meters Metric Units The basic unit of length in the metric system in the meter and is represented by a lowercase m. Standard: The distance traveled by light in absolute vacuum in 1∕299,792,458 of a second. Metric Units 1 Kilometer (km) = 1000 meters 1 Meter = 100 Centimeters (cm) 1 Meter = 1000 Millimeters (mm) Which is larger? A. 1 meter or 105 centimeters C. 12 centimeters or 102 millimeters B. 4 kilometers or 4400 meters D. 1200 millimeters or 1 meter Measuring Length How many millimeters are in 1 centimeter? 1 centimeter = 10 millimeters What is the length of the line in centimeters? _______cm What is the length of the line in millimeters? _______mm What is the length of the line to the nearest centimeter? ________cm HINT: Round to the nearest centimeter – no decimals. -
The Use of Lidar Remote Sensing in Measuring Forest Carbon Stocks
1 The Use of LiDAR Remote Sensing in Measuring Forest Carbon Stocks Michael Alan Salopek North Huntingdon, Pennsylvania Bachelor of Arts, University of Virginia, 2012 A Thesis presented to the Graduate Faculty of the University of Virginia in Candidacy for the Degree of Master of Arts Department of Environmental Sciences University of Virginia May, 2013 2 Table of Contents 1. Introduction 2. What is Lidar 2.1 Overview 2.2 What is Lidar 2.3 Lidar Terminology 2.4 Principles and Techniques 2.5 Overview of Applications 2.6 History 3. The Use of Lidar in Biomass Estimation 3.1 Systems 3.1.1 Space-born 3.1.2 Airborne 3.1.3 Terrestrial 3.2 Data Acquisition 3.2.1 First Return, Last Return 3.2.2 Multi Return 3.2.3 Full Wave Form 4. Methods and Models 4.1 Data Pre Processing 4.1.1 Filtering 4.1.2 Interpolation 4.1.3 DTM, DSM, CHM 4.1.4 Quality Assessment 4.2 Methods 4.2.1 Single Tree Detection, Tree Characteristic Detection 5. Examples of Studies in Estimating Carbon Stocks 6. Conclusion 3 Abstract Atmospheric carbon levels have increased dramatically since the industrial revolution, creating an increasing concern in forming a better understanding of the global carbon budget. A key part of this budget involves forest biomass and its ability to act as a source of carbon sink or carbon gain. It is understood that terrestrial areas serve as a large source of carbon sink in terms of the global carbon budget, however the degree of spatial variation, particularly with respect to densely vegetated areas, is less certain. -
Calculating Board Feet Board Feet Linear Feet Z "Board Feet" Is a Measurement of Lumber Square Feet Volume
Calculating Board Feet board Feet linear feet z "Board Feet" is a measurement of lumber square feet volume. z A board foot is equal to 144 cubic inches of wood. TED 126 Spring 2007 z Actually it's easy to calculate using the following formula: Bd. Ft. = T (inches) x W (inches) x L (feet) / 12 2 Board Feet Board Feet z When you are figuring up board feet, keep in mind a waste factor. Bd. Ft. = T (inches) x W (inches) x L (feet) / 12 z If you purchase good clear material add about 15% for waste, Bd. Ft. = T (inches) x W (inches) x L (inches) / 144 z if you elect to use lower grade material you will have to allow for defects and more wasted material ---add about 30%. 3 4 Board Feet and Linear feet Board Feet and Linear feet z A linear foot is a measure of length 12 inches z To convert linear feet to board feet: long and a Thickness” x Width” x Length’ ÷ 12 z board foot is a number calculated by determining the volume of a board that is 12 z To convert board feet to linear feet: inches wide and 1 inch thick. • In other words, a 1" x 6" board that measures 24" 12 ÷ Thickness” x Width” x Board Foot long is exactly one board foot. (width" x thickness" x length' / 12) 5 6 1 Linear feet and Square Feet The math…. z It is not possible to convert linear footage into z A Linear Feet is just a measurement of square footage because a linear foot is only one length and does not take into account its dimension and a square foot is two dimensions, width or thickness. -
Biological Resources Engineering FACTS Facts 176 March 1990
DEPARTMENT OF BIOLOGICAL RESOURCES ENGINEERING * COLLEGE PARK, MD 20742-2315 * (301) 405-1198 * FAX (301) 314-9023 Biological Resources Engineering FACTS Facts 176 March 1990 DETERMINING THE AMOUNT OF MANURE IN A PILE OR A POOL Herbert L. Brodie Extension Agricultural Engineer Planning for the most effective use of manure on your farm requires a combination of information that defines the quality and quantity of manure available. The manure analysis tells you the nutrient content of the manure in pounds per ton or pounds per gallon. A manure spreader calibration allows you to develop a manure application rate that matches the crop nutrient need with the manure nutrient content in terms of tons or gallons of manure per acre. An estimate of the total amount of manure in storage allows you to determine the total number of acres that can be fertilized at the calibration rate. The determination of the amount of manure available for spreading requires estimation of the volume in a pile or container. This fact sheet describes methods of measurement and calculation of volume and the conversion of volume to weight. What is volume? Volume is the amount of space contained within or occupied by an object. Volume is measured in cubic units such as cubic feet, cubic inches, cubic meters or cubic yards. With simple straight sided right angled boxes (Figure 1), the calculation of volume (V) is simply the width (W) multiplied by the height (H) multiplied by the length (L) of the space (V = H x W x L). Figure 1. Volume of a simple box. -
Feasibility Analysis of a Small Log Sawmill in Southeast Alaska
1 Feasibility analysis of a small log sawmill in Southeast Alaska Executive Summary Unlike most Southern Yellow Pine sawmills, a small log mill in Southeast Alaska that manufactured lumber from 60-year old trees, would not be profitable. There are many additional operating costs in the remote forests of Southeast Alaska that the Southern Yellow Pine sawmills do not incur. The two most costly disadvantages are; 1. An additional $SO per thousand board feet of lumber that is required to transport lumber from Southeast Alaska to the Pacific Northwest and, 2. The lack ofany reasonable economy of scale. The small timber sale volume projected to be available to the manufacturing industry in Southeast Alaska is inadequate to support more than a single mid-size sawmill. Consequently the regions sawmills will not produce any income from the residual products - chips, sawdust and bark. The chips are currently barged to pulp mills in the Pacific Northwest and Canada, while the Yellow Pine sawmills can deliver chips to nearby pulp mills at a much lower cost than the Alaska sawmills. Similarly, there are no fiberboard plants to utilize the sawdust from Southeast Alaska sawmills and there is no market for the bark in Southeast Alaska. Instead, most ofthe sawdust and bark must be disposed of in landfills. Introduction The purpose of this analysis is to compare several financial estimates of the feasibility of manufacturing lumber from immature young growth timber in Southeast Alaska. Four sawmill proformas are 1 examined : 1. A summary of five actual Southern Yellow Pine sawmills. This proforma was used because much of the rhetoric surrounding the Secretary of Agriculture unilateral decision to transition to 60+ year old Alaska young growth was based on assertions that Yellow Pine sawmills harvest their 2 timber before age 60 • Other than the obvious difference in tree species, the yellow pine region has much different logistic issues than Southeast Alaska. -
Guide for the Use of the International System of Units (SI)
Guide for the Use of the International System of Units (SI) m kg s cd SI mol K A NIST Special Publication 811 2008 Edition Ambler Thompson and Barry N. Taylor NIST Special Publication 811 2008 Edition Guide for the Use of the International System of Units (SI) Ambler Thompson Technology Services and Barry N. Taylor Physics Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899 (Supersedes NIST Special Publication 811, 1995 Edition, April 1995) March 2008 U.S. Department of Commerce Carlos M. Gutierrez, Secretary National Institute of Standards and Technology James M. Turner, Acting Director National Institute of Standards and Technology Special Publication 811, 2008 Edition (Supersedes NIST Special Publication 811, April 1995 Edition) Natl. Inst. Stand. Technol. Spec. Publ. 811, 2008 Ed., 85 pages (March 2008; 2nd printing November 2008) CODEN: NSPUE3 Note on 2nd printing: This 2nd printing dated November 2008 of NIST SP811 corrects a number of minor typographical errors present in the 1st printing dated March 2008. Guide for the Use of the International System of Units (SI) Preface The International System of Units, universally abbreviated SI (from the French Le Système International d’Unités), is the modern metric system of measurement. Long the dominant measurement system used in science, the SI is becoming the dominant measurement system used in international commerce. The Omnibus Trade and Competitiveness Act of August 1988 [Public Law (PL) 100-418] changed the name of the National Bureau of Standards (NBS) to the National Institute of Standards and Technology (NIST) and gave to NIST the added task of helping U.S. -
Forests Commission Victoria-Australia
VICTORIA, 1971 FORESTS COMMISSION VICTORIA-AUSTRALIA FIFTY SECOND ANNUAL REPORT FINANCIAL YEAR 1970-71 PRESENTED TO BOTH HOUSES OF PARLIAMENT PURSUANT TO ACT No. 6254, SECTION 35 . .Approximate Cosl of llrport.-Preparation, not given. Printing (250 copies), $1,725.00. No. 14-9238/71.-Price 80 cents FORESTS COMMISSION, VICTORIA TREASURY GARDENS, MELBOURNE, 3002 ANNUAL REPORT 1970-71 In compliance with the provisions of section 35 of the Forests Act 1958 (No. 6254) the Forests Commission has the honour to present to Parliament the following report of its activities and financial statements for the financial year 1970-71. F. R. MOULDS, Chainnan. C. W. ELSEY, Commissioner. A. J. THREADER, Commissioner. F. H. TREYV AUD, Secretary. CONTENTS PAGE 6 FEATURES. 8 fvlANAGEMENT- Forest Area, Surveys, fvlapping, Assessment, Recreation, fvlanagement Plans, Plantation Extension Planning, Forest Land Use Planning, Public Relations. 12 0PERATIONS- Silviculture of Native Forests, Seed Collection, Softwood Plantations, Hardwood Plantations, Total Plantings, Extension Services, Utilization, Grazing, Forest Engineering, Transport, Buildings, Reclamation and Conservation Works, Forest Prisons, Legal, Search and Rescue Operations. 24 ECONOMICS AND fvlARKETING- Features, The Timber Industry, Sawlog Production, Veneer Timber, Pulpwood, Other Forest Products, Industrial Undertakings, Other Activities. 28 PROTBCTION- Fire, Radio Communications, Biological, Fire Research. 32 EDUCATION AND RESEARCH- Education-School of Forestry, University of fvlelbourne, Overseas and Other Studies ; Research-Silviculture, Hydrology, Pathology, Entomology, Biological Survey, The Sirex Wood Wasp; Publications. 38 CONFERENCES. 39 ADMINISTRATJON- Personnel-Staff, Industrial, Number of Employees, Worker's Compensation, Staff Training ; fvlethods ; Stores ; Finance. APPENDICES- 43 I. Statement of Output of Produce. 44 II. Causes of Fires. 44 III. Summary of Fires and Areas Burned. -
Reedt~Perrine
Reed t~Perrine FERTILIZERS 8<LANDSCAPE SUPPLIES Weights and Measures METRIC EQUIVALENTS AVOIRDUPOIS WEIGHT • LINEAR MEASURE 27-11/32 grams 1 dram 1 centimeter 0.3937 inches 16 drams 1 ounce 1 Inch 2.54 centimeters 16 ounces 1 pound 1 decimenter 3.937 in 0.328 foot 25 pounds 1 quarter 1 foot 3.048 decimenters 4 quarters 1 cwt. 1 meter 39.37 inches 1.0936 yds. 2,000 pounds 1 short ton 1 yard 0.9144 meter 2,240 pounds 1 long ton 1 dekameter 1.9884 rods TROY WEIGHT 1 rod 0.5029 dekameter 1 kilometer _ 0.621 mile 24 grains 2 pwt. 1 mile 1.609 kilometers 20 pwt 1 ounce 12 ounces 1 pound SQUARE MEASURE Used for weighing gold, silver and jewels 1 square centimeter 0.1550 sq. inches CUBIC MEASURE 1 square inch 6.452 sq. centimeters 1,728 cubic inches 1 cubic foot 1 square decimeter 0.1076 square foot 27 cubic feet 1 cubic yard 1 square foot . 9.2903 square dec. 128 cubic feet 1 cord (wood) 1 square meter _ 1.196 square yds. 40 cubic feet 1 ton (shipping) 1 square yard 0.8361 square meter 2,150.42 cubic inches 1 standard bu. 1 acre 160 square rods 231 cubic inches 1 U.S. standard gal. 1 square rod 0.00625 acre 1 cubic foot about 4/5 of a bushel 1 hectare .. _. _ 2.47 acres 1 acre 0.4047 hectare DRY MEASURE 1 square mile 2.59 sq. kilometers 2 pints 1 quart 1 square kilometer 0.386 square mile 8 quarts _ 1 peck 4 pecks 1 bushel MEASURE OF VOLUME LIQUID MEASURE 1 cubic centimeter. -
Units of Weight and Measure : Definitions and Tables of Equivalents
Units of Weight and Measure (United States Customary and Metric) Definitions and Tables of Equivalents United States Department of Commerce National Bureau of Standards Miscellaneous Publication 233 THE NATIONAL BUREAU OF STANDARDS Functions and Activities The functions of the National Bureau of Standards are set forth in the Act of Congress, March 3, 1901, as amended by Congress in Public Law 619, 1950. These include the development and maintenance of the national standards of measurement and the provision of means and methods for making measurements consistent with these standards; the determination of physical constants and properties of materials; the development of methods and instruments for testing materials, devices, and structures; advisory services to government agencies on scientific and technical problems; invention and development of devices to serve special needs of the Government; and the development of standard practices, codes, and specifications. The work includes basic and applied research, development, engineering, instrumentation, testing, evaluation, calibration services, and various consultation and information services. Research projects are also performed for other government agencies when the work relates to and supplements the basic program of the Bureau or when the Bureau's unique competence is required. The scope of activities is suggested by the fisting of divisions and sections on the inside of the back cover. Publications The results of the Bureau's work take the form of either actual equipment and devices