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1. Roller compaction: Improving the homogeneity of ribbon properties along the roller width

Author:
Omar, Chalak S.; Al-Asady, Riyadh B.; Salman, Agba D.
Source:
Powder technology 2019 v.342 pp. 464-474
ISSN:
0032-5910
Subject:
cameras,   etc   ; porosity; powders; temperature;     Show all 4 Subjects
Abstract:
... A new roller with a novel surface geometry was designed and used in this study in order to improve the uniformity of the stress distribution along the roller width. This was aimed to produce homogenous properties across ribbon width. The porosity distribution resulting from the applied stress, was correlated to the temperature distribution across the ribbon width using an online thermal camera. Us ...
DOI:
10.1016/j.powtec.2018.10.018

2. Ignition sensitivity and flame propagation of zirconium powder clouds

Author:
Cao, Yong; Su, Hao; Ge, Lifang; Li, Yuyan; Wang, Yongxu; Xie, Lifeng; Li, Bin
Source:
Journal of hazardous materials 2019 v.365 pp. 413-420
ISSN:
0304-3894
Subject:
cameras,   etc   ; energy; furnaces; temperature; turbulent flow; zirconium;     Show all 6 Subjects
Abstract:
... The ignition sensitivity and flame propagation of zirconium powder clouds are investigated with the influence of initial turbulence. The effect of initial turbulence on the zirconium powder explosion is studied by the change of ignition delay time and dispersion pressure. Hartmann apparatus and Godbert-Greenwald furnace are used to evaluate the minimum ignition energy and minimum ignition temperat ...
DOI:
10.1016/j.jhazmat.2018.11.022

3. A novel ultra-thin flattened heat pipe with biporous spiral woven mesh wick for cooling electronic devices

Author:
Zhou, Wenjie; Li, Yong; Chen, Zhaoshu; Deng, Liqiang; Gan, Yunhua
Source:
Energy conversion and management 2019 v.180 pp. 769-783
ISSN:
0196-8904
Subject:
cameras,   etc   ; copper; electronic equipment; heat transfer; permeability;     Show all 5 Subjects
Abstract:
... In this work, a novel biporous spiral woven mesh wick is developed to enhance the thermal performance of an ultra-thin flattened heat pipe for cooling high heat flux electronic devices. The biporous wick with different sized pores is hybrid woven using 0.05 and 0.04 mm diameter copper wires in every strand. Three different structures are designed to study the effect of the characteristic parameter ...
DOI:
10.1016/j.enconman.2018.11.031

4. Are camera traps fit for purpose? A rigorous, reproducible and realistic test of camera trap performance

Author:
Apps, Peter; McNutt, John Weldon
Source:
African journal of ecology 2018 v.56 no.4 pp. 710-720
ISSN:
0141-6707
Subject:
cameras,   etc   ; animals; models;     Show all 3 Subjects
Abstract:
... Camera traps are now widely used to produce the data that inform critical, large‐scale conservation strategies, but insufficient attention has been paid to evaluating or validating their performance. A realistic, reproducible and rigorous test of camera trap performance has been developed, using a real animal target moving in different directions and at different distances from sets of up to six c ...
DOI:
10.1111/aje.12573

5. Detection of aeolian transport in coastal images

Author:
Williams, Isaac A.; Wijnberg, Kathelijne. M.; Hulscher, Suzanne. J.M.H.
Source:
Aeolian research 2018 v.35 pp. 47-57
ISSN:
1875-9637
Subject:
cameras,   etc   ; automation; remote sensing;     Show all 3 Subjects
Abstract:
... Optical remote sensing provides a low cost method of documenting surface conditions over extended periods of time. Its utility in resolving large scale aeolian transport events is examined in this paper. To this end, over 1800 images taken over a three month period by a stationary camera in a coastal setting are classified as containing/ not containing aeolian transport using both a manual and aut ...
DOI:
10.1016/j.aeolia.2018.09.003

6. Experimental investigation of cavity length pulsation characteristics of jet pumps during limited operation stage

Author:
Wang, Jiong; Xu, Shuangjie; Cheng, Huaiyu; Ji, Bin; Zhang, Junqiang; Long, Xinping
Source:
Energy 2018 v.163 pp. 61-73
ISSN:
0360-5442
Subject:
cameras,   etc   ; equipment performance; pumps;     Show all 3 Subjects
Abstract:
... Experiments were conducted to investigate the cavity length pulsation characteristics in jet pumps with different area ratios during limited operation stage. Images of various cavitating flows were captured and analyzed to study the cavity length pulsation characteristics by high speed camera technology. It was found that the development tendency of time-averaged cavity length can be divided into ...
DOI:
10.1016/j.energy.2018.08.035

7. Intelligent recognition of dominant colors for Chinese traditional costumes based on a mean shift clustering method

Author:
Xing, Le; Zhang, Jie; Liang, Hui’e; Li, Zhongjian
Source:
The journal of the Textile Institute 2018 v.109 no.10 pp. 1304-1314
ISSN:
1754-2340
Subject:
cameras,   etc   ; algorithms; color; fabrics;     Show all 4 Subjects
Abstract:
... Chinese traditional costumes have been recognized as one of the most influential sources for Western designers to obtain oriental inspirations and create Asian chic, especially the dominant colors and design style. In this paper, an effective color clustering method based on Mean shift clustering algorithm is developed for Chinese traditional costumes image. The proposed method consists of four st ...
DOI:
10.1080/00405000.2018.1423896

8. Focus model for metric depth estimation in standard plenoptic cameras

Author:
Pertuz, Said; Pulido-Herrera, Edith; Kamarainen, Joni-Kristian
Source:
ISPRS journal of photogrammetry and remote sensing 2018 v.144 pp. 38-47
ISSN:
0924-2716
Subject:
cameras,   etc   ; image analysis; models;     Show all 3 Subjects
Abstract:
... In recent years, a lot of efforts have been devoted to the problem of depth estimation from lightfield images captured by standard plenoptic cameras. However, most of the metric depth estimation methods in the state-of-the-art leverage pixel disparity only. In this paper, we tackle the problem of focus-based metric depth estimation in standard plenoptic cameras. For this purpose we propose a close ...
DOI:
10.1016/j.isprsjprs.2018.06.020

9. Effects of injection pressure on ignition and combustion characteristics of impinging diesel spray

Author:
Du, Wei; Zhang, Qiankun; Zhang, Zheng; Lou, Juejue; Bao, Wenhua
Source:
Applied energy 2018 v.226 pp. 1163-1168
ISSN:
0306-2619
Subject:
cameras,   etc   ; combustion; diesel engines;     Show all 3 Subjects
Abstract:
... The constant injection mass is a criterion for measuring the thermal efficiency of diesel engines. In this study, the effects of the injection pressure on the ignition and combustion characteristics of an impinging diesel spray are investigated for a constant injection mass. Experiments are performed in a constant volume combustion chamber including a high-pressure common-rail injector with a sing ...
DOI:
10.1016/j.apenergy.2018.06.032

10. Developing Noise-Resistant Three-Dimensional Single Particle Tracking Using Deep Neural Networks

Author:
Zhong, Yaning; Li, Chao; Zhou, Huiyang; Wang, Gufeng
Source:
Analytical chemistry 2018 v.90 no.18 pp. 10748-10757
ISSN:
1520-6882
Subject:
cameras,   etc   ; fluorescence; neural networks;     Show all 3 Subjects
Abstract:
... Three-dimensional single particle tracking (3D SPT) is a powerful tool in various chemical and biological studies. In 3D SPT, z sensitive point spread functions (PSFs) are frequently used to generate different patterns, from which the axial position of the probe can be recovered in addition to its xy coordinates. Conventional linear classifier-based methods, for example, the correlation coefficien ...
DOI:
10.1021/acs.analchem.8b01334

11. Detection of inter-frame forgeries in digital videos

Author:
K., Sitara; Mehtre, B.M.
Source:
Forensic science international 2018 v.289 pp. 186-206
ISSN:
0379-0738
Subject:
cameras,   etc   ; monitoring; tampering;     Show all 3 Subjects
Abstract:
... Videos are acceptable as evidence in the court of law, provided its authenticity and integrity are scientifically validated. Videos recorded by surveillance systems are susceptible to malicious alterations of visual content by perpetrators locally or remotely. Such malicious alterations of video contents (called video forgeries) are categorized into inter-frame and intra-frame forgeries. In this p ...
DOI:
10.1016/j.forsciint.2018.04.056

12. Estimation of 2D to 3D dimensions and proportionality indices for facial examination

Author:
Martos, Rubén; Valsecchi, Andrea; Ibáñez, Oscar; Alemán, Inmaculada
Source:
Forensic science international 2018 v.287 pp. 142-152
ISSN:
0379-0738
Subject:
cameras,   etc   ; computers; face; photographs;     Show all 4 Subjects
Abstract:
... Photo-anthropometry is a metric-based facial image comparison technique where measurements of the face are taken from an image using predetermined facial landmarks. In particular, dimensions and proportionality indices (DPIs) are compared to DPIs from another facial image. Different studies concluded that photo-anthropometric facial comparison, as it is currently practiced, is unsuitable for elimi ...
DOI:
10.1016/j.forsciint.2018.03.037

13. Forensic gait analysis — Morphometric assessment from surveillance footage

Author:
Seckiner, Dilan; Mallett, Xanthé; Maynard, Philip; Meuwly, Didier; Roux, Claude
Source:
Forensic science international 2019 v.296 pp. 57-66
ISSN:
0379-0738
Subject:
cameras,   etc   ; databases; forensic sciences; gait; monitoring; morphometry; protocols; statistics;     Show all 8 Subjects
Abstract:
... Following the technological rise of surveillance cameras and their subsequent proliferation in public places, the use of information gathered by such means for investigative and evaluative purposes sparked a large interest in the forensic community and within policing scenarios. In particular, it is suggested that analysis of the body, especially the assessment of gait characteristics, can provide ...
DOI:
10.1016/j.forsciint.2019.01.007

14. The deceleration of bullets in gelatine — A study based on high-speed video analysis

Author:
Schyma, C.; Infanger, C.; Müller, R.; Bauer, K.; Brünig, J.
Source:
Forensic science international 2019 v.296 pp. 85-90
ISSN:
0379-0738
Subject:
cameras,   etc   ; copper; deformation; forensic sciences; gelatin; kinetic energy; models;     Show all 7 Subjects
Abstract:
... The velocity of a projectile is of crucial importance to calculate its kinetic energy. The study was performed to investigate if a measurement of the velocity profile of a bullet in gelatine was feasible using high-speed video.More than 50 records captured with a SA-X2 Photron camera at 40,000 fps (40k) and 10 μs exposure time were analysed frame by frame. A measurement accuracy of one pixel could ...
DOI:
10.1016/j.forsciint.2019.01.017

15. Granular dynamics in a vertical bladed mixer: Secondary flow patterns

Author:
Havlica, J.; Jirounkova, K.; Travnickova, T.; Stanovsky, P.; Petrus, P.; Kohout, M.
Source:
Powder technology 2019 v.344 pp. 79-88
ISSN:
0032-5910
Subject:
cameras,   etc   ; blades; color; computer simulation; deformation; mathematical models; mixing; powders;     Show all 8 Subjects
Abstract:
... This article deals with numerical simulations and experimental measurements of the granular mixing process in a vertical cylindrical mixer with two opposed flat blades with a 45° rake angle. The computer simulations were conducted via discrete element method. The experimental measurements were recorded by a color high-speed camera. Both approaches describe the mixing process in the same way with s ...
DOI:
10.1016/j.powtec.2018.11.094

16. Single-shot real-time sub-nanosecond electron imaging aided by compressed sensing: Analytical modeling and simulation

Author:
Liu, Xianglei; Zhang, Shian; Yurtsever, Aycan; Liang, Jinyang
Source:
Micron 2019 v.117 pp. 47-54
ISSN:
0968-4328
Subject:
cameras,   etc   ; algorithms; image analysis; mathematical models; transmission electron microscopy;     Show all 5 Subjects
Abstract:
... Bringing ultrafast (nanosecond and below) temporal resolution to transmission electron microscopy (TEM) has historically been challenging. Despite significant recent progress in this direction, it remains difficult to achieve sub-nanosecond temporal resolution with a single electron pulse, in real-time (i.e., duration in which the event occurs) imaging. To address this limitation, here, we propose ...
DOI:
10.1016/j.micron.2018.11.003

17. Progressive failure behaviors and crack evolution of rocks under triaxial compression by 3D digital image correlation

Author:
Tang, Yang; Okubo, Seisuke; Xu, Jiang; Peng, Shoujian
Source:
Engineering geology 2019 v.249 pp. 172-185
ISSN:
0013-7952
Subject:
cameras,   etc   ; andesite; compression strength; cracking; digital images; energy; soil weathering;     Show all 7 Subjects
Abstract:
... In the study, a series of monotonic triaxial compression tests were carried out on Emochi andesite to evaluate the effects of confining pressure on progressive failure behaviors. The three-dimensional digital image correlation (3D-DIC) system consisting of six cameras was used to capture the images based on the transparent pressure cell. The effects of confining pressures on stress thresholds, ene ...
DOI:
10.1016/j.enggeo.2018.12.026

18. Distribution of pelagic and epi-benthic fish around a multi-module artificial reef-field: Close module spacing supports a connected assemblage

Author:
Becker, Alistair; Smith, James A.; Taylor, Matthew D.; McLeod, James; Lowry, Michael B.
Source:
Fisheries research 2019 v.209 pp. 75-85
ISSN:
0165-7836
Subject:
cameras,   etc   ; artificial reefs; concrete; fish; habitats; models; reefs; steel;     Show all 8 Subjects
Abstract:
... The deployment of artificial reef systems is rapidly increasing, typically using modules constructed from concrete or steel in a “reef-field” configuration. Such reefs provide habitat for a range of pelagic and benthic reef-associated fish species, yet little is understood of how the configuration of reef fields may affect the distribution of fish. Observations of fish from 930 camera deployments ...
DOI:
10.1016/j.fishres.2018.09.020

19. Quantification of oil droplets under high pressure laboratory experiments simulating deep water oil releases and subsea dispersants injection (SSDI)

Author:
Brandvik, Per Johan; Storey, Chris; Davies, Emlyn John; Leirvik, Frode
Source:
Marine pollution bulletin 2019 v.138 pp. 520-525
ISSN:
0025-326X
Subject:
cameras,   etc   ; dispersants; droplets; laboratory experimentation; oils; seawater; water pollution;     Show all 7 Subjects
Abstract:
... Limited experimental and field data are available describing oil droplet formation from subsea releases at high pressure. There are also analytical challenges quantifying oil droplets over a wide size and concentrations range at high pressure. This study quantified oil droplets released from an orifice in seawater at low and high pressure (5 m and 1750 m depth). Oil droplet sizes were quantified u ...
DOI:
10.1016/j.marpolbul.2018.11.020

20. Shepherds’ local knowledge and scientific data on the scavenging ecosystem service: Insights for conservation

Author:
Morales-Reyes, Zebensui; Martín-López, Berta; Moleón, Marcos; Mateo-Tomás, Patricia; Olea, Pedro P.; Arrondo, Eneko; Donázar, José A.; Sánchez-Zapata, José A.
Source:
Ambio 2019 v.48 no.1 pp. 48-60
ISSN:
0044-7447
Subject:
cameras,   etc   ; biodiversity; ecosystem services; livestock; monitoring; surveys; vertebrates; Spain;     Show all 8 Subjects
Abstract:
... Integrating indigenous and local knowledge (ILK) and scientific knowledge (SK) in the evaluation of ecosystem services has been recommended by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. We examined the similarities and contradictions between shepherds’ ILK and SK on the scavenging service provided by vertebrates in Spain. We conducted 73 face-to-face surv ...
DOI:
10.1007/s13280-018-1055-6