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Bias and precision of the Barr and Stroud dendrometer under field conditions


, : Bias and precision of the Barr and Stroud dendrometer under field conditions. USDA Forest Service Research Paper, Intermountain Forest and Range Experiment Station (INT-186): 46

Field tests of the Barr and Stroud optical dendrometer in conifer forests in NW Montana disclosed a 1.19% positive bias in tree diameter measurements for each of three observers. No bias in height measurement was discovered. A 5.4% over-estimate in standing-tree volume measurement was attributed partly to bias in diameter measurement and partly to wide spacing of measurement points on tree stems.

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Other references

Sijmons, R.H.; Stulp, R.P., 2004: Clinical vignette: early-onset head and neck cancer: beware of fanconi anaemia!. Hereditary Cancer in Clinical Practice 2(3): 147-148

Schaefer, H-Hendrik.; Dieterle, T., 2011: Diagnosis and therapy of heart failure with normal ejection fraction. Diastolic heart failure, also termed as heart failure with normal or preserved ejection fraction has a high prevalence and mortality world wide. The clinical manifestation comprises typical symptoms and signs of heart failure along with normal or...

Anonymous, 1950: Rh ORGANIZATION and research in the Netherlands. Maandschrift Voor Kindergeneeskunde 18(3/4): 83-185

Reid, C.N.; Anderson, P.A.V.; Cross, L.J.M.; Halton, D.W.; Shaw, C., 1998: Isolation and structural characterisation of a novel histamine-releasing tridecapeptide from the skin extracts and dermal venom of the African frog, Kassina senegalensis. Digestive Diseases & Sciences 43(8): 1869, Aug

Mitsushima, D.; Takase, K.; Funabashi, T.; Kimura, F., 2009: Gonadal steroids maintain 24 h acetylcholine release in the hippocampus: organizational and activational effects in behaving rats. Extracellular acetylcholine (ACh) levels in the dorsal hippocampus increases during learning or exploration, exhibiting a sex-specific 24 h release profile. To examine the activational effect of gonadal steroid hormones on the sex-specific ACh lev...

Lo, C.W.; Gilula, N.B., 1980: PCC4azal teratocarcinoma stem cell differentiation in culture. III. Cell-to-cell communication properties. Developmental Biology 75(1): 112-120

Schutz, L., 1966: Okologische Untersuchungen uber die Benthosfauna im Nordostseekanal. 2. Aukologie der vagilen und hemisessilen Arten im Bewuchs der Pfahle: Mikro- und Mesofauna. Internationale Revue der Gesamten Hydrobiologie u Hydrographie, 51: 633-685

Precht, H., 1965: Erganzende Versuche zur Bedeutung des Blutes fur die Temperaturadaptation bei Fischen. Zoologischer Anzeiger, 175: 301-310

Yoshikawa, K.; Ujikawa, M.; Iijima, T.; Azuhata, T.; Inoue, Y., 1995: Reproducibility of the topographic parameters of the optic disk with the scanning laser tomograph. The scanning laser tomograph was used to measure the optic disk topography in the left eye of five normal volunteers and five open angle glaucoma patients during the same day. We studied the reproducibility of 7 topographic parameters with the coe...

Carswell, F.; Ferguson, A., 1973: Plasma food antibodies during withdrawal and reintroduction of dietary gluten in coeliac disease. Archives of Disease in Childhood 48(8): 583-586