Bibliografie tematiche / Length measurement

Letteratura scientifica selezionata sul tema "Length measurement"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 30 luglio 2024

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Articoli di riviste sul tema "Length measurement"

1

Qi, H. S., W. B. Rowe e B. Mills. "Contact length in grinding: Part 1: Contact length measurement". Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 211, n. 1 (1 gennaio 1997): 67–76. http://dx.doi.org/10.1243/1350650971542327.

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The nature of the contact behaviour between a grinding wheel and a workpiece in the grinding process was investigated by measurement and a model evaluation. In Part 1 of this paper measurement methods for assessment of contact length were investigated. The applied power source (APS) method was judged to give the most reliable measurement of contact length. The interpretation of contact length measurements is discussed. The contact signal can be distinguished in three stages which may correspond to the action of an active grain through the contact zone: cutting, ploughing and rubbing. The definition of contact length in grinding is discussed and it is found that it is difficult to use a single value to represent it. The measured results confirm that the measured contact length in grinding is considerably longer than the geometric contact length. There is considerable evidence that the measurements represent real contact phenomena.
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Lipson, Michael J. "Axial Length Measurement". Eye & Contact Lens: Science & Clinical Practice 41, n. 3 (maggio 2015): 156–59. http://dx.doi.org/10.1097/icl.0000000000000140.

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Kobayashi, Chihiro. "Electronic canal length measurement". Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 79, n. 2 (febbraio 1995): 226–31. http://dx.doi.org/10.1016/s1079-2104(05)80288-4.

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Vorkapić, Marija. "Kindergartens length measurement strategies". Metodicka praksa 25, n. 1 (2022): 83–96. http://dx.doi.org/10.5937/metpra2201083v.

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Measuring length is an integrative part of everyday life. Understanding the procedure of measuring length contributes to the conceptual understanding of measurement, which includes measuring area and volume. Measuring, and thus measuring length, is one of the terms that connects mathematics not only with everyday life, but also with other mathematical areas such as geometry, numbers, statistics, etc. The importance of understanding and developing the concept of measuring length is evidenced by the fact that it is an integral and very important part of many curricula related to preschool education. Of course, measuring length at preschool age implies processes, strategies and measuring instruments that are adapted to the developmental level of children that age. The paper presents the theoretical and methodological foundations of length measurement, development theory of length measurement, as well as a systematic review of length measurement strategies used in preschool age.
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Bae, Yun Kyung, e Dong Hoon Hyun. "Dew Point Measurement Error due to Tube Length in a Calibration Instrumentation and the Evaluation of Measurement Uncertainty". Applied Mechanics and Materials 789-790 (settembre 2015): 519–25. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.519.

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The purpose of this paper is to analyze the effect of tube length in calibration instrumentation on dew point measurement of dew point sensors (DPS) and evaluation of measurement uncertainty. When measuring dew point temperature, various tube lengths between dew point generator and dew point sensor (DPS) cause a significant error due to moisture absorption of inner tube. The measurement is carried out to analyze the variation on measured dew point temperature for four cases of tube lengths with 300 mm, 1200 mm, 2500 mm and 5000 mm. The dew point temperature measurements were performed in the range from-60 °C to 10 °C by using calibrated standard chilled mirror hygrometer as reference standard. In order to investigate contribution to the standard uncertainty for the tube length variation as an uncertainty source, expanded uncertainties were evaluated for the cases including the effect of tube length variation as an uncertainty source and excluding it at each measurement point. The measurement was conducted according to standard calibration procedure of Korea Testing Laboratory which assures suitability and traceable results. It is also based on international standards.
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McIntyre, D. B., e F. J. Ward. "Estimating Fork Lengths of Fathead Minnows, Pimephales promelas, from Measurement of Pharyngeal Arches". Canadian Journal of Fisheries and Aquatic Sciences 43, n. 6 (1 giugno 1986): 1294–97. http://dx.doi.org/10.1139/f86-161.

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The pharyngeal arches of fathead minnows (Pimephales promelas) are persistent in the gut of juvenile walleye (Stizostedion vitreum vitreum). The relationship of fork length to GAP (chord length between the dorsal and ventral extremities of the left pharyngeal arch) measurements of left pharyngeal arches of fathead minnows is linear, positive, and highly significant. Fish lengths calculated from arches recovered from stomachs after a period of up to 8 h generally fell within the prediction intervals established for the regression of fork lengths on arch measurements of freshly killed minnows. The relationship between length and arch measurement will permit the length of ingested fathead minnows to be calculated aiding in food size selection and energetic studies. Other minnow species, sharing the same habitats with fathead minnows, have distinctive pharyngeal arches which can be used to identify species in stomach contents. Length may also be correlated with pharyngeal arch measurements in these species.
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Keck, Christian, e René Schödel. "Reference Measurement of Roundwood by Fringe Projection". Forest Products Journal 71, n. 4 (1 ottobre 2021): 352–61. http://dx.doi.org/10.13073/fpj-d-21-00024.

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Abstract The metrological verification of log scanners requires logs with accurately known dimensions as test objects. The measurement of the lengths and diameters must be traceable back to the SI (International System of Units) unit of length. The results have to be reported with the corresponding measurement uncertainties. The uncertainties are required to be 5 to 10 times lower than the corresponding maximum permissible errors allowed for the log scanner under test. This article presents a procedure for the reference measurement of logs using an off-the-shelf fringe projection system along with uncertainty budgets for the measured dimensions. The length and diameters are determined from the highly resolved mesh obtained by fringe projection using techniques from computational geometry and coordinate metrology. Corrections are applied to the length and diameter values to remove the systematic effect caused by scattering of projected light below the partially transparent log surface. The influence of the fringe projection system on the measured dimensions is determined by measurements of calibrated artifacts, which also provide the traceability back to the SI unit of length. The measurement is illustrated by the example of a log with a length of 2 m and a diameter of 280 mm. The corresponding uncertainty budgets, confirmed by repeat measurements, result in expanded uncertainties (confidence interval 95%) of 6 mm and 0.13 mm for length and diameter, respectively. These low values qualify the fringe projection measurement along with accompanying evaluation procedure to provide logs as reference objects for the verification of log scanners.
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Slagter, Nienke, Mette van Wilsum, Loek J. M. de Heide, Ewoud H. Jutte, Mirjam A. Kaijser, Stefan L. Damen, André P. van Beek e Marloes Emous. "Laparoscopic Small Bowel Length Measurement in Bariatric Surgery Using a Hand-Over-Hand Technique with Marked Graspers: an Ex Vivo Experiment". Obesity Surgery 32, n. 4 (24 febbraio 2022): 1201–8. http://dx.doi.org/10.1007/s11695-022-05918-z.

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Abstract Introduction Tailoring limb length in bariatric surgery is a subject of many studies. To acquire the optimal limb length, accurate measurement of the small bowel length is essential. Objective To assess the intra- and inter-individual variability of laparoscopic bowel length measurement using a hand-over-hand technique with marked graspers. Method Four bariatric surgeons and four surgical residents performed measurements on cadaver porcine intestine in a laparoscopic box using marked graspers. Each participant performed 10 times a measurement of three different lengths: 150, 180, and 210 cm. Acceptable percentage deviation from the goal lengths was defined as less than 10%, while unacceptable deviations were defined as more than 15%. Results The bariatric surgeons measured the 150-, 180-, and 210-cm tasks with 4% (CI 0.4, 9), − 6% (CI − 11, − 0.8), and 1% (CI − 4, 6) deviation, respectively. In total, the bariatric surgeons estimated 58 out of 119 times (49%) between the margins of 10% deviation and 36 times (30%) outside the 15% margin. Considerable inter-individual differences were found between the surgeons. The surgical residents underestimated the tasks with 12% (CI − 18, − 6), 16% (CI − 19, − 13), and 18% (CI − 22, − 13), respectively. Conclusion Bariatric surgeons estimated bowel length with on average less than 10% deviation. However, this still resulted in 30% of the measurements with more than 15% deviation. There were considerable inter-individual differences between the surgeons and residents structurally underestimated the bowel length. Ascertainment of measurement accuracy and adequate training is essential for bariatric procedures in which limb length is of importance. Graphical abstract
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Lotze, W. "Precision length measurement by computer-aided coordinate measurement". Journal of Physics E: Scientific Instruments 19, n. 7 (luglio 1986): 495–501. http://dx.doi.org/10.1088/0022-3735/19/7/001.

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Selmer, Sarah J., e Kimberly Floyd. "UDL for Geometric Length Measurement". Teaching Children Mathematics 19, n. 3 (ottobre 2012): 146–51. http://dx.doi.org/10.5951/teacchilmath.19.3.0146.

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Tesi sul tema "Length measurement"

1

Tompkins, Michael. "Automated Method For Fiber Length Measurement". NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-05222006-130435/.

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The price of cotton is dictated by quality and the most significant factor of contributing to the fiber quality is the length distribution of the fibers contained within the population. Therefore it is of importance to accurately and repeatably measure the length of fibers within a population so that it is graded properly. Current methods are inadequate and thus prior work focused on designing a machine to directly measure individual cotton fibers using digital imaging. The current work begins with the evaluation of the effectiveness of the digital imaging machine. The machine was evaluated and sources of error identified. Modifications were implemented in an attempt to improve the error. After multiple modifications with little success an entirely new design was conceptualized. The new design aimed to eliminate all major sources of error with the existing machine while not creating new sources of error. The new design is discussed and the results are compared to those obtained by the original imaging machine. The new machine was better able to accurately measure the length of cut length fibers. The variation between fibers within a sample and entire samples of cut length fiber was significantly decreased when compared to the variation of the previous system.
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Ikiz, Yuksel. "Fiber Length Measurement by Image Processing". NCSU, 2000. http://www.lib.ncsu.edu/theses/available/etd-20000809-225316.

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IKIZ, YUKSEL. Fiber Length Measurement by Image Processing. (Under the direction of Dr. Jon P. Rust.) This research studied the accuracy and feasibility of cotton fiber length measurement by image processing as an alternative to existing systems. Current systems have some weaknesses especially in Short Fiber Content (SFC) determination, which is becoming an important length parameter in industry. Seventy-two treatments of five factors were analyzed for length and time measurements by our own computer program. The factors are: Sample preparation (without fiber crossover and with fiber crossover), lighting (backlighting and frontlighting), resolution (37-micron, 57-micron, 106-micron, and 185-micron), preprocessing (4-neighborhood and 8-neighborhood), and processing (outlining, thinning, and adding broken skeletons). The best results in terms of accuracy, precision and analysis time for images without fiber crossovers were: 106-micron resolution with frontlighting using an 8-neighborhood thresholding algorithm and using an outline algorithm for length determination. With fiber crossovers, 57-micron resolution with backlighting using an 8-neighborhood thresholding algorithm and using a thinning algorithm combined with an adding algorithm for combining broken skeletons. Using the above conditions, 1775 area can be analyzed using our current equipment in 15 seconds. In the case of images with crossovers, only 117 can be analyzed in 15 seconds. This research demonstrates that successful sample preparation without fiber crossovers would create the best fiber length measurement technique, however with fiber crossovers the system efficiency has been proven as well.

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Hodgson, David Zhuang. "Residual stress measurement across different length scales". Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544354.

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Clay, G. A. "Automatic fibre length measurement by image analysis". Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305598.

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Ballard, Norman. "Electrode length measurement in electric arc furnaces". Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/18232.

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Accurate measurement of electrode length in electric arc furnaces will result in decreased maintenance time, and improved plant productivity. This thesis describes the development of a microwave-based Soderberg electrode length-measurement system. Various methods of electrode-length measurement were investigated, and it was found that a microwave measurement system based on a conventional frequency modulated continuous wave (FMCW) radar presented the most feasible technique. In this system, microwaves are propagated down a waveguide placed in the electrode. As the waveguide melts, they continue propagating in the resulting cavity until they are reflected by the discontinuity at the bottom of the electrode. The time taken for the return journey to the bottom of the electrode and back is measured, and the electrode length calculated.
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Wilcox, Eva. "Novel Neutron Detector for n-n Scattering Length Measurement". Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd900.pdf.

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Love, Peter. "In vivo sarcomere length measurement and total body irradiation". Thesis, University of Canterbury. Physics, 1996. http://hdl.handle.net/10092/8116.

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This thesis contains work carried out in two separate fields of medical physics. Firstly, an instrument is described which enable orthopaedic surgeons to measure the in vivo sarcomere length in muscle fibre. The technique relies on the diffraction of laser light as it passes through the periodic structure of striated muscle. The resulting instrument is a modification of one described by other workers. Various refinements to the instrument were carried out and tested during several tendon-transfer operations. A precision of 3% in the sarcomere length may be achieved which is adequate for the surgeons needs. Secondly, simulations and experiments were performed to investigate an arcing Total Body Irradiation technique to be used in radiotherapy. The technique was first proposed by workers at Christchurch Hospital and this work continues that study. Computer code was written to simulate the treatment using Monte Carlo methods for radiation transport. Various characteristics of the treatment were examined such as dose rates, dose uniformity and dose compensation. These properties must be known if the treatment is to be implemented in a clinical situation. An anthropomorphic model was used which demonstrates the dose uniformity achievable with this method.
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Sheikh, Zahoor Ahmad. "Measurement of the coherence length of atomic two-photon radiation". Thesis, University of Stirling, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359253.

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Weale, Cecil Jack. "Investigating the association between Leucocyte Telomere length and glucose intolerance". Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2722.

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Thesis (MSc (Biomedical Technology))--Cape Peninsula University of Technology, 2017.
Background: Telomeres are DNA-proteins situated at the ends of linear chromosomes, responsible for genome stabilization. A link has been previously described between leucocyte telomere length (LTL) and age-related inflammatory disorders such as atherosclerosis, rheumatoid arthritis and cancer. Since diabetes mellitus has been described as a chronic inflammatory condition, it has been hypothesized that there is significant LTL shortening in individuals with dysglycaemia. Aim: To investigate leucocyte telomere length in patients with pre-diabetes, newly diagnosed, known diabetics on treatment and to compare the results to normoglycaemic individuals. Methods: A total of 205 eligible subjects (78% women) median age 56 years, from the Bellville-South community were followed-up between 2008 and 2011. Baseline and follow-up data collections included glucose tolerance status, anthropometric, blood pressure, lipids, insulin, γ-glutamyl transferase, cotinine, and HbA1c. In all participants, telomere length was measured using the absolute telomere q-PCR method performed on a Bio-Rad MiniOpticon Detector. Results: Although there was a change in individuals’ glycaemic status over the 3 years, no significant differences were observed in LTL across glycaemic status: (Baseline p = 0.7618, 3 Year Follow-up p = 0.2204). However, in a multiple regression model, adjusted for age and gender, LTL was negatively associated with age and GGT, and positively associated with high density lipoproteins (HDL) (all p < 0.05). Discussion and conclusion: This research study was the first longitudinal study of LTL in Africans. We show that LTL shortening is not evident within three years, nor is it associated with glycaemia. Our findings also corroborate previous notions associating LTL with age. The lack of association between LTL and glycaemia has been previously reported, however further studies are required using larger sample and broader BMI spread.
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Gedela, Naga Venkata Praveen babu. "MEASUREMENT AND ITS HISTORICAL CONTEXT". Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1226037175.

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Libri sul tema "Length measurement"

1

ill, Cockcroft David, a cura di. Length. New York: New Discovery, 1999.

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Pluckrose, Henry. Length: Knowabout series. London: F. Watts, 1988.

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Harling, Paul. Length 1. London: Ward Lock Educational, 1985.

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Harling, Paul. Length 2. London: Ward Lock Educational, 1985.

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Chambers, Lindy M. Measure for treasure: Length. Vernon Hills, Ill: Learning Resources, Inc., 1996.

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Wood, E. J. Fibre length measurement on scoured wool. Christchurch: WRONZ, 1988.

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Adamson, Thomas K. How do you measure length and distance? Mankato, Minn: Capstone Press, 2011.

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Conrad, Robert Harvey. Conversion equations between fork length and total length for chinook salmon (Oncorhynchus tshawytscha). Olympia, WA: Northwest Indian Fisheries Commission, 1996.

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Carter, Rik. Exploring measurement: Length, area, volume, mass, time. Rowley, MA: Didax Educational Resources, 1996.

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Malagola, Gianfranco. La metrologia dimensionale per l'industria meccanica: Aspetti teorici e pratici nelle misure di lunghezza per la determinazione delle specifiche geometroche dei prodotti. [Torino]: Augusta-Mortarino, 2004.

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Capitoli di libri sul tema "Length measurement"

1

Cooke, David L. "Axial Length Measurement". In Intraocular Lens Calculations, 197–214. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-50666-6_11.

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AbstractThe physical conditions for optical biometry are reviewed, and the difference between conventional axial length measurements and segmented, or sum-of-segments axial length readings explained. Segmented axial length reading may have an advantage over the conventional axial length readings—especially in the extreme range—and examples are given of the difference between the two methods and also between different biometers.
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Pejenaute, Álvaro, e Guillermo Zalba Goñi. "Measurement of Telomere Length". In Telomeres, Diet and Human Disease, 39–54. Boca Raton, FL : CRC Press, 2017. | “A science publishers book.”| Includes bibliographical references and index.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315152431-3.

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Hebra, Alexius J. "The measurement of length". In The Physics of Metrology, 1–21. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-211-78381-8_1.

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Turner, Scott S. "Measurement of Bulk Magnetic Properties". In Multi Length-Scale Characterisation, 1–61. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118683972.ch1.

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Wang, Li, Rachel Lopes Franke Bezerra e Douglas D. Koch. "IOL Power Calculation in Long Eye". In Intraocular Lens Calculations, 883–92. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-50666-6_63.

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AbstractInaccurate measurement of preoperative axial length is the main reason for postoperative refractive error in axial high myopia. When axial length is measured by optical biometry, the adoption of the original formula to transform the optical path length into a geometrical path length leads to overestimation of axial length in myopic eyes. The group refractive index adopted to calibrate optical biometry and immersion ultrasound biometry, in fact, does not take the different relative lengths of the ocular segments into account. Segmented axial length, which is obtained by adding the individual geometrical path length of cornea, aqueous depth, lens thickness, and vitreous chamber depth, provides more accurate axial length measurements in long eyes.Axial length adjustment methods (Wang-Koch adjustment) have been developed and refined to improve the refractive outcome of traditional formulas (Holladay 1, Holladay 2 and SRK/T). Similar adjustments are included in newer formulas and lead to better results compared to the original axial length measurements.
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Joksic, Gordana, Ivana Joksic, Jelena Filipović e Thomas Liehr. "Telomere Length Measurement by FISH". In Springer Protocols Handbooks, 147–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52959-1_14.

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Chan, Caroline T. W. "Length, area and volume measurement". In Estimating and Measurement for Simple Building Works in Hong Kong, 104–13. Second edition. | Abingdon, Oxon; New York, NY : Routledge, 2021.: Routledge, 2020. http://dx.doi.org/10.1201/9781003017837-10.

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Marder, Alexander. "APPLE: Alias Pruning by Path Length Estimation". In Passive and Active Measurement, 249–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44081-7_15.

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Treese, Steven A. "Historical Length or Distance". In History and Measurement of the Base and Derived Units, 101–299. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77577-7_4.

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Slijepcevic, Predrag. "Telomere length measurement by Q-FISH". In Chromosome Painting, 17–22. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0330-8_3.

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Atti di convegni sul tema "Length measurement"

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G, Deepa, Charanya J, Indhumathi N, Miruthika C, Myvizhli P e Gokul T. "Length Measurement of Coir Rope". In 2023 14th International Conference on Computing Communication and Networking Technologies (ICCCNT). IEEE, 2023. http://dx.doi.org/10.1109/icccnt56998.2023.10307808.

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Frieden, B. Roy. "Measurement of length in a finite picture". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.tum2.

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The finite size of a picture should affect any length determination within the picture. This follows because the histogram of all possible lengths within a picture is not flat but is peaked at a length 0.46b and cuts off at length 1.414b (the diagonal), where b is the width of the square picture. With such a preference for length 0.46b, any Bayesian estimate of length (such as the posterior mean) will be biased toward it. The following scenario is presumed: (a) Prior to taking the picture, the two end points defining length can be equally anywhere within the picture. Only after viewing the picture are two end points of interest recognized, (b) The X and Y positions of each end point are located with additive, Gaussian error, (c) The end point measurements lie within the picture. A Monte Carlo approach was used to create true lengths and measured lengths in accordance with the preceding, forming a likelihood histogram whose mean is the required estimate. Results are shown as plots of estimated length vs measured length for a given sigma of noise in the end point location. If sigma is a decent fraction of picture size b, the estimated length departs significantly from the measurement.
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Pi, Jiajing, Li-Zhuan Zhao, Jian-Guo Du e Wei-Guo Shen. "High-precision laser interferometer for length metrology". In Measurement Technology and Intelligent Instruments, a cura di Li Zhu. SPIE, 1993. http://dx.doi.org/10.1117/12.156509.

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Yang, Yongchai. "High-accuracy photoelectric measurement of length". In International Conference on Optoelectronic Science and Engineering '90. SPIE, 1990. http://dx.doi.org/10.1117/12.2294701.

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Lihn, Hung-chi. "Measurement of subpicosecond electron pulse length". In Beam instrumentation. AIP, 1997. http://dx.doi.org/10.1063/1.52277.

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Zhou, Yu, Jihong Liu, Heng Wu e Ying Zheng. "Study on cable length measurement methods". In 2017 29th Chinese Control And Decision Conference (CCDC). IEEE, 2017. http://dx.doi.org/10.1109/ccdc.2017.7978490.

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Storozhuk, E. S., V. V. Redko e T. S. Mylnikova. "Non-contact length and speed measurement". In 2008 International Conference Modern Technique and Technologies - (MTT 2008). IEEE, 2008. http://dx.doi.org/10.1109/spcmtt.2008.4897491.

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Holá, Miroslava, Ondřej Číp, Martin Sarbort e Josef Lazar. "Air flow and length noise in displacement interferometry". In Optics and Measurement Conference 2014, a cura di Jana Kovačičinová e Tomáš Vít. SPIE, 2015. http://dx.doi.org/10.1117/12.2176179.

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Wang, D. N., G. Dick, S. Chen, K. T. V. Grattan e A. W. Palmer. "The use of short coherence length laser light for eye length measurement". In 1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.5760994.

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10

Wang, Dick, Chen, Grattan e Palmer. "The Use Of Short Coherence Length Laser Light For Eye Length Measurement". In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.589763.

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Rapporti di organizzazioni sul tema "Length measurement"

1

Victor, Smalyuk, e B. Bacha. Bunch length measurement using a BPM button signal. Office of Scientific and Technical Information (OSTI), dicembre 2019. http://dx.doi.org/10.2172/1770732.

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2

Wilkins, Gary D. Atmospheric Transverse Coherence Length Measurement System for Laser Communications. Fort Belvoir, VA: Defense Technical Information Center, febbraio 1993. http://dx.doi.org/10.21236/ada263563.

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3

Beers, John S. Length scale measurement procedures at the National Bureau of Standards. Gaithersburg, MD: National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3625.

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4

Domgmo-Momo, Gilles. Infrared Spectroscope for Electron Bunch-length Measurement: Heat Sensor Parameters Analysis. Office of Scientific and Technical Information (OSTI), settembre 2012. http://dx.doi.org/10.2172/1050220.

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5

Nagaitsev, Sergei, Jonathan Jarvis, Aleksandr Romanov, Alexander Shemyakin, Giulio Stancari, Alexander Valishev e Ihar Lobach. Measurement of Coherence Length in UndulAtor RAdiation (CLARA): Run 4 Proposal. Office of Scientific and Technical Information (OSTI), luglio 2023. http://dx.doi.org/10.2172/1997543.

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6

Torres Ferrer, Jose A., e Georgia L. Harris. Selected laboratory and measurement practice and procedures for length calibrations (2014 Ed). Gaithersburg, MD: National Institute of Standards and Technology, 2014. http://dx.doi.org/10.6028/nist.ir.8028.

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7

Cudzinovic, M., e B. Sopori. First working group meeting on the minority carrier diffusion length/lifetime measurement: Results of the round robin lifetime/diffusion length tests. Office of Scientific and Technical Information (OSTI), novembre 1995. http://dx.doi.org/10.2172/150930.

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8

McInerney, Michael, Matthew Brenner, Sean Morefield, Robert Weber e John Carlyle. Acoustic nondestructive testing and measurement of tension for steel reinforcing members. Engineer Research and Development Center (U.S.), ottobre 2021. http://dx.doi.org/10.21079/11681/42181.

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Abstract (sommario):
Many concrete structures contain internal post-tensioned steel structural members that are subject to fracturing and corrosion. The major problem with conventional tension measurement techniques is that they use indirect and non-quantitative methods to determine whether there has been a loss of tension. This work developed an acoustics-based technology and method for making quantitative tension measurements of an embedded, tensioned steel member. The theory and model were verified in the laboratory using a variety of steel rods as test specimens. Field tests of the method were conducted at three Corps of Engineers dams. Measurements of the longitudinal and shear velocity were done on rods up to 50 ft long. Not all rods of this length were able to be measured and the quality and consistency of the signal varied. There were fewer problems measuring the longitudinal velocity than shear velocity. While the tension predictions worked in the laboratory tests, the tension could not be accurately calculated for any of the field sites because researchers could not obtain the longitudinal or shear velocities in an unstressed state, or precise measurements of the longitudinal and shear velocities due to the unknown precise length of the rods in the tensioned state.
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9

Okamura, M. The Hall Probe Measurement and Calculation of the Half Length Helical Dipole Magnet. Office of Scientific and Technical Information (OSTI), agosto 1997. http://dx.doi.org/10.2172/1149842.

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10

Silver, R. M., e J. L. Land. Benchmarking the length measurement capabilities of the National Institute of Standards and Technology. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6036.

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