scholarly journals Research of the Photo-Optical Method Application for Measuring Selected Data on the Movement of a Parachute for Type M-282

2021 ◽  
Vol 11 (12) ◽  
pp. 5637
Author(s):  
Peter Kaľavský ◽  
Róbert Rozenberg ◽  
Peter Korba ◽  
Martin Kelemen ◽  
Matej Antoško ◽  
...  
Keyword(s):  
Optical Method ◽  
Training Programs ◽  
Performance Standard ◽  
Motion Data ◽  
Innovative Methods ◽  
Measurement Results ◽  
Different Types ◽  
Vertical Speed ◽  
Individualized Training ◽  
Minimum Performance

Testing in the field of parachute technology provides space for the application of new and innovative methods of measuring operating and functional parameters. The main aim of the paper is to present the results of research for the verification of the photo-optical method of measuring the vertical speed of the M-282 parachutes, and for its use in testing, collecting, and investigating motion data in parachuting. As part of this measuring technology, twelve jumps were performed. It was verified that the experiment was completed for the M-282 parachute according to the regulation of SAE AS 8015B “Minimum Performance Standard Parachute Assemblies and Components”. An analysis of the influencing factors and quantification of their influence on the uncertainty of the measurement results was also performed. The results of the measurement achieved by using the photo-optical method were compared with the measurement with the electronic variometer FLYTEC 4030. The vertical speed of the M-282 parachute (4.655 m·s−1) defined by the photo-optical method is significantly similar to the vertical speed of the M-282 parachute (4.662 m·s−1) defined by FLYTEC 4030. We can state that the process of identifying the vertical speed of the parachute by the photo-optical method was correct. This is a suitable method of evaluating motion data in the operation of M-282 type parachutes. In the following research for generalization of the methodology, we assume the performance of more than 60 experimental jumps using different types of parachutes, digital sensors (cameras), and a photo-optical method to examine motion data and formulate recommendations for testing, investigative applications, individualized training programs, and aspects of parachuting injury prevention.

Herramientas digitales para recolección, procesamiento y presentación de datos de campo como instrumento para afrontar la contingencia COVID-19

2021 ◽  
Vol 5 ◽  
pp. 96-104
Author(s):  
Didier Haid Alvarado Acosta
Keyword(s):  
Learning Curve ◽  
Training Programs ◽  
Communication Technologies ◽  
Field Work ◽  
Web Based ◽  
Face To Face ◽  
The Past ◽  
Online Platforms ◽  
Virtual Libraries ◽  
Different Types

In March of 2020, the COVID-19 outbreak forced people to lock themselves inside their homes and begin the process of transitioning from face-to-face activities at work, schools and universities to a 100 % virtual method. Even when Communication Technologies (ICT) and online platforms have seen growth over the past two decades, including various virtual libraries developed by database publishers or web-based training programs that appear to shorten the learning curve (Lee, Hong y Nian, 2002), many people were unprepared for this transition and all of them are now dedicated to entering the new reality. In this order of ideas, the activities that have traditionally required the assistance of the staff have had to adapt with the use of new tools, which meet daily needs. A clear example is the field work collection tasks. In this group, there are different types such as surveys, photographs, reviews or on-site inspections. The current work presents the use of tools for collecting, validating, analysing and presenting data remotely and in real time. All of them based on the ArcGIS Online platform.

Objective intraoperative assessment of vitreous f loaters localization in YAG-laser vitreolysis

2021 ◽  
pp. 258-261
Author(s):  
B.A. Normaev ◽  
◽  
A.V. Doga ◽  
D.A. Buryakov ◽  
◽  
...  
Keyword(s):  
Optical Method ◽  
Vitreous Cavity ◽  
Optical Methods ◽  
Safe Distance ◽  
Limits Of Agreement ◽  
Yag Laser ◽  
Vitreous Floaters ◽  
Measurement Results ◽  
Key Word ◽  
Ultrasound Assessment

Purpose. To develop an optical method for assessing the localization of vitreous floaters in the vitreous cavity and to evaluate its efficacy compared to ultrasound assessment. Material and methods. The study included 35 patients (35 eyes) with Weiss ring. All the patients underwent echobiometry, as well as measurement of the distance from the vitreous floaters (VF) to the lens posterior capsule or towards retina by ultrasound and developed optical methods. Results. The mathematical modeling and the diopter difference between the slit-lamp oculars were used to develop a formula for the safe position of the VF in the vitreous cavity calculation. A comparative analysis of ultrasound and optical methods measurement results have showed their comparability. The values of the "limits of agreement" with 95% confidence intervals were: -0.02 [-0.07; 0.01] - the lower "consistency limit" and 0.25 [0.20; 0.29] - the upper "consistency limit". The average difference between methods with a 95% confidence interval was 0.11 [0.08; 0.13]. Conclusions. The developed optical method for assessing the safe localization of VF in the vitreous cavity showed comparable results with the ultrasound measurements. Futhermore, optical method allows to intraoperatively control the safe distance from the VF to the intraocular structures, thereby reducing the risk of YAG-vitreolysis complications. Key word: YAG laser vitreolysis, vitreous floaters, safe distance of vitreous floaters.

Using Technology in Providing Effective Training

2012 ◽  
pp. 138-153
Author(s):  
Ernest W. Brewer ◽  
Stephen D. Stockton ◽  
Tammi M. Basile
Keyword(s):  
Formative Evaluation ◽  
Training Programs ◽  
Clear Understanding ◽  
Training Methods ◽  
Implementation Phase ◽  
Evaluation Phase ◽  
Effective Training ◽  
Individualized Training ◽  
Learning With Technology ◽  
Goals And Objectives

The key to an organization’s abilities to provide effective training in the 21st century is by infusing technology into their training programs. Before technology infusion can occur, there must be a clear understanding of the dynamics of learning with technology and of the instructional culture of the organization. Developers of effective training programs infuse technology based on four phases—development, integration, implementation, and evaluation. The development phase involves the analysis of the organization, the creation of training goals and objectives, and the design of the training program. The integration phase determines the organization’s technology levels and allows developers and trainers to expedite training methods suitable for particular needs. The implementation phase consists of the actual delivery of the training. The evaluation phase is ongoing through formative evaluation, and it ends with a summative evaluation. Future trends of technology in training show promising models for effective individualized training in virtual environments.

scholarly journals Random Telegraph Noises from the Source Follower, the Photodiode Dark Current, and the Gate-Induced Sense Node Leakage in CMOS Image Sensors

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5447
Author(s):  
Calvin Yi-Ping Chao ◽  
Shang-Fu Yeh ◽  
Meng-Hsu Wu ◽  
Kuo-Yu Chou ◽  
Honyih Tu ◽  
...  
Keyword(s):  
Dark Current ◽  
Image Sensors ◽  
Integration Time ◽  
X Ray ◽  
Multiple Sampling ◽  
Cmos Image Sensors ◽  
Measurement Results ◽  
Source Follower ◽  
Different Types ◽  
Dark Signal

In this paper we present a systematic approach to sort out different types of random telegraph noises (RTN) in CMOS image sensors (CIS) by examining their dependencies on the transfer gate off-voltage, the reset gate off-voltage, the photodiode integration time, and the sense node charge retention time. Besides the well-known source follower RTN, we have identified the RTN caused by varying photodiode dark current, transfer-gate and reset-gate induced sense node leakage. These four types of RTN and the dark signal shot noises dominate the noise distribution tails of CIS and non-CIS chips under test, either with or without X-ray irradiation. The effect of correlated multiple sampling (CMS) on noise reduction is studied and a theoretical model is developed to account for the measurement results.

scholarly journals Bidirectional Quantum Communication through the Composite GHZ-GHZ Channel

2020 ◽  
Vol 10 (16) ◽  
pp. 5500
Author(s):  
Shuangshuang Shuai ◽  
Na Chen ◽  
Bin Yan
Keyword(s):  
Quantum Communication ◽  
Information Leakage ◽  
Quantum Measurements ◽  
Transmission Scheme ◽  
Quantum Bits ◽  
Ghz States ◽  
Surrounding Environment ◽  
Measurement Results ◽  
Different Types ◽  
Communication Scheme

This paper solved the problem of transmitting quantum bits (qubits) in a multi-hop and bidirectional way. Considering that the Greenberger–Horne–Zeilinger (GHZ) states are less prone to the decoherence effects caused by the surrounding environment, we proposed a bidirectional quantum communication scheme based on quantum teleportation and the composite GHZ-GHZ states. On a multi-hop quantum path, different types of GHZ states are previously shared between the adjacent intermediate nodes. To implement qubit transmission, the sender and intermediate nodes perform quantum measurements in parallel, and then send their measurement results and the types of previously shared GHZ states to the receiver independently. Based on the received information, the receiver performs unitary operations on the local particle, thus retrieving the original qubit. Our scheme can avoid information leakage at the intermediate nodes and can reduce the end-to-end communication delay, in contrast to the hop-by-hop qubit transmission scheme.

Influence of three different types of physical training programs on bone mineral density in a group of elderly subjects

2019 ◽  
Vol 34 (3) ◽  
pp. 186-189
Author(s):  
R. Nasr ◽  
N. Al Rassy ◽  
E. Watelain ◽  
S. Ishac ◽  
O. Abdul Al ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Physical Training ◽  
Training Programs ◽  
Elderly Subjects ◽  
Mineral Density ◽  
Different Types

scholarly journals Reactivity in measuring depression

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Rosa W. Runhardt
Keyword(s):  
Social Construction ◽  
Human Subject ◽  
Research Subject ◽  
Harmful Dysfunction ◽  
Measurement Results ◽  
Reactive Changes ◽  
Different Types ◽  
Biological Aspects

AbstractIf a human subject knows they are being measured, this knowledge may affect their attitudes and behaviour to such an extent that it affects the measurement results as well. This broad range of effects is shared under the term ‘reactivity’. Although reactivity is often seen by methodologists as a problem to overcome, in this paper I argue that some quite extreme reactive changes may be legitimate, as long as we are measuring phenomena that are not simple biological regularities. Legitimate reactivity is reactivity which does not undermine the accuracy of a measure; I show that if such reactivity were corrected for, this would unjustifiably ignore the authority of the research subject. Applying this argument to the measurement of depression, I show that under the most commonly accepted models of depression there is room for legitimate reactivity. In the first part of the paper, I provide an inventory of the different types of reactivity that exist in the literature, as well as the different types of phenomena that one could measure. In the second part, I apply my argument to the measurement of depression with the PHQ-9 survey. I argue that depending on what kind of phenomenon we consider depression to be (a disease, a social construction, a harmful dysfunction, or a practical kind), we will accept different kinds of reactivity. I show that both under the harmful dysfunction model and the practical kinds model, certain reactive changes in measuring depression are best seen as legitimate recharacterizations of the underlying phenomenon, and define what legitimate means in this context. I conclude that in both models, biological aspects constrain characterization, but the models are not so strict that only one concept is acceptable, leaving room for reactivity.

Sign in / Sign up

Export Citation Format

Share Document