EpiX: A 3D Measurement Tool for Heritage, Archeology, and Aerial Photogrammetry

2018 ◽  
pp. 47-66
Author(s):  
Shizeng Yao ◽  
Hang Yu ◽  
Hadi AliAkbarpour ◽  
Guna Seetharaman ◽  
Kannappan Palaniappan
Dysphagia ◽  
2015 ◽  
Vol 31 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Simone van Dijk ◽  
Maarten J. A. van Alphen ◽  
Irene Jacobi ◽  
Ludwig E. Smeele ◽  
Ferdinand van der Heijden ◽  
...  

2021 ◽  
Author(s):  
Grant Richard Woodrow Humphries ◽  
Tom Fail ◽  
Megan Watson ◽  
Dayle Bickley ◽  
Ruth Peters-Grundy ◽  
...  

Abstract Calculating the height at which birds fly over the sea is a challenging task but remains important to assessing collision risk in proposed offshore windfarm areas for consenting purposes. This could be done by several methods (e.g., GPS or laser range-finders), but each have biases that make it difficult to generate site-wide assessments. Digital video aerial surveys, which quickly cover large areas, were used to assess flight heights of northern gannets and black-legged kittiwakes using a photogrammetric technique combined with a semi-automated measurement tool. The lengths of birds known to be at sea surface as identified by reflection on the water, were compared to lengths of birds at unknown height to generate individual flight height profiles. Validation of the flight height method using objects of known dimensions and heights suggested a 9 – 18% error (3 – 6 m at ~30 m height). However, the profiles of mean flight height distribution matched patterns in previous work. This method was able to estimate the flying heights of 65% and 75% of flying gannets and kittiwakes respectively in this case study. The annual percentage of gannets at collision risk height for a set of turbines with a 30m air gap was estimated at 29.8%, and 16.1% for kittiwake. This technique can greatly improve our knowledge of the spatial distribution of flight height patterns in marine ecosystems, but also allows stakeholders to assess collision risk more easily within the sphere of offshore wind for the consenting process.


Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4600
Author(s):  
Konrad Walotek ◽  
Joanna Bzówka ◽  
Adrian Ciołczyk

This paper presents the ARAMIS 3D system and examples of deformation susceptibility test results made on mixtures of coal mining waste and recycled tire rubber bound with the use of hydraulic binders. The ARAMIS 3D system is a measurement tool based on 3D scanning of the surface of the tested material. On the basis of the obtained 3D video image, the system allows for the continuous observation of the displacements occurring on the surface of the tested object during its load. This allows for a very detailed determination of the deformation distribution during the material loading. These types of measurement systems can be very useful, especially in the case of testing composite materials and testing materials under cyclic load conditions.


1999 ◽  
Vol 10 (10) ◽  
pp. 904-913 ◽  
Author(s):  
Heinrich Stüer ◽  
Hans-Gerd Maas ◽  
Marko Virant ◽  
Joachim Becker

1978 ◽  
Vol 48 ◽  
pp. 389-390 ◽  
Author(s):  
Chr. de Vegt

AbstractReduction techniques as applied to astrometric data material tend to split up traditionally into at least two different classes according to the observational technique used, namely transit circle observations and photographic observations. Although it is not realized fully in practice at present, the application of a blockadjustment technique for all kind of catalogue reductions is suggested. The term blockadjustment shall denote in this context the common adjustment of the principal unknowns which are the positions, proper motions and certain reduction parameters modelling the systematic properties of the observational process. Especially for old epoch catalogue data we frequently meet the situation that no independent detailed information on the telescope properties and other instrumental parameters, describing for example the measuring process, is available from special calibration observations or measurements; therefore the adjustment process should be highly self-calibrating, that means: all necessary information has to be extracted from the catalogue data themselves. Successful applications of this concept have been made already in the field of aerial photogrammetry.


2019 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Daniel Akbar Wibowo ◽  
Dini Nurbaeti Zen ◽  
Yalis Agustina

Disease that is often complained by the public today one of the pain in the bone, which is better known by the community with rheumatism. Rheumatism or rheumatoid arthritis is a systemic, progressive, chronic and tendonic inflammatory disease of joints and connective tissue symmetrically. One way of management of rheumatoid arthritis pain is back massage therapy. Back Massage is one of the techniques to give massage action on the back with lotions/balm for 10-15 minutes, the warm sensation leads to vasodilation of blood vessels that will improve blood circulation in the area so that the activity of the cell is increased and will reduce pain, increase comfort, reduce muscle tension and improve physical and psychological relaxation. This study aims to determine the effect of Back massage therapy to decrease the pain level of rheumatoid arthritis patients in Rajadesa Village Rajadesa Sub District Ciamis District in 2018. Type of research using Quasi Experiment Design with one group pretest-posttest design. Total sample 48 respondents with total sampling technique. Data collection using experimental method with VDS (Verbal Descriptor Scale) pain rate measurement tool. The result of statistical test by using Linear Regression shows Sig = 0,000 <0,05, t value = 18,935> 2,012. Then Ha is accepted, and the average value before therapy is 3.27 with a standard deviation of 0.818, whereas after therapy is 2.23 with a standard deviation of 0.881, meaning there is the effect of back massage therapy on the decrease of pain level in patients with rheumatoid arthritis. So to reduce pain in patients with rheumatoid arthritis can be given back massage therapy.


Author(s):  
Miraida Morales ◽  
Sarah Barriage

This poster presents a pilot study that analyzed a small corpus of informed consent forms used in research with children, adolescents, and adult early readers using Coh-Metrix, a readability measurement tool. Recommendations for increasing readability of consent forms in order to improve the informed consent process are also provided. Cette affiche présente une étude pilote qui a analysé un corpus restreint de formulaires de consentement éclairé utilisés dans la recherche avec les enfants, les adolescents et les lecteurs précoces adultes,  utilisant Coh-Metrix, un outil de mesure de la lisibilité. Nous fournissons également des recommandations pour augmenter la lisibilité des formulaires de consentement afin d'améliorer le processus de consentement éclairé.


Author(s):  
Mark Kimball

Abstract This article presents a novel tool designed to allow circuit node measurements in a radio frequency (RF) integrated circuit. The discussion covers RF circuit problems; provides details on the Radio Probe design, which achieves an input impedance of 50Kohms and an overall attenuation factor of 0 dB; and describes signal to noise issues in the output signal, along with their improvement techniques. This cost-effective solution incorporates features that make it well suited to the task of differential measurement of circuit nodes within an RF IC. The Radio Probe concept offers a number of advantages compared to active probes. It is a single frequency measurement tool, so it complements, rather than replaces, active probes.


Author(s):  
Katherine V. Whittington

Abstract The electronics supply chain is being increasingly infiltrated by non-authentic, counterfeit electronic parts, whose use poses a great risk to the integrity and quality of critical hardware. There is a wide range of counterfeit parts such as leads and body molds. The failure analyst has many tools that can be used to investigate counterfeit parts. The key is to follow an investigative path that makes sense for each scenario. External visual inspection is called for whenever the source of supply is questionable. Other methods include use of solvents, 3D measurement, X-ray fluorescence, C-mode scanning acoustic microscopy, thermal cycle testing, burn-in technique, and electrical testing. Awareness, vigilance, and effective investigations are the best defense against the threat of counterfeit parts.


2012 ◽  
Vol 27 (2) ◽  
pp. 264-269 ◽  
Author(s):  
Christian Lorbach ◽  
Ulrich Hirn ◽  
Johannes Kritzinger ◽  
Wolfgang Bauer

Abstract We present a method for 3D measurement of fiber cross sectional morphology from handsheets. An automated procedure is used to acquire 3D datasets of fiber cross sectional images using an automated microtome and light microscopy. The fiber cross section geometry is extracted using digital image analysis. Simple sample preparation and highly automated image acquisition and image analysis are providing an efficient tool to analyze large samples. It is demonstrated that if fibers are tilted towards the image plane the images of fiber cross sections are always larger than the true fiber cross section geometry. In our analysis the tilting angles of the fibers to the image plane are measured. The resulting fiber cross sectional images are distorted to compensate the error due to fiber tilt, restoring the true fiber cross sectional shape. We use an approximated correction, the paper provides error estimates of the approximation. Measurement results for fiber wall thickness, fiber coarseness and fiber collapse are presented for one hardwood and one softwood pulp.


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