continuous monitoring
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2022 ◽  
Vol 808 ◽  
pp. 152164
Author(s):  
T. Matos ◽  
J.L. Rocha ◽  
C.L. Faria ◽  
M.S. Martins ◽  
Renato Henriques ◽  
...  

2022 ◽  
Vol 269 ◽  
pp. 112829
Author(s):  
Mathieu Decuyper ◽  
Roberto O. Chávez ◽  
Madelon Lohbeck ◽  
José A. Lastra ◽  
Nandika Tsendbazar ◽  
...  

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 661
Author(s):  
Mazhar Hussain ◽  
Mattias O’Nils ◽  
Jan Lundgren ◽  
Irida Shallari

To produce flawless glass containers, continuous monitoring of the glass gob is required. It is essential to ensure production of molten glass gobs with the right shape, temperature, viscosity and weight. At present, manual monitoring is common practice in the glass container industry, which heavily depends on previous experience, operator knowledge and trial and error. This results in inconsistent measurements and consequently loss of production. In this article, a multi-camera based setup is used as a non-invasive real-time monitoring system. We have shown that under certain conditions, such as keeping the glass composition constant, it is possible to do in-line measurement of viscosity using sensor fusion to correlate the rate of geometrical change in the gob and its temperature. The correlation models presented in this article show that there is a strong correlation, i.e., 0.65, between our measurements and the projected viscosity.


2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jun Heng Chou ◽  
Prerana Agrawal ◽  
Jacqueline Birt

Purpose The purpose of this paper is to analyse stakeholders’ perceptions on the accounting of crypto-assets. They also look at the need to amend/clarify existing accounting standards or develop new accounting standards. Design/methodology/approach The authors use a qualitative approach featuring interviews with four stakeholder groups including academics, professional bodies, standard setters and accounting practitioners. Interview recordings are transcribed and then analysed through NVivo. Findings The interviewees identify various issues in the application of current accounting standards to crypto-assets. The interviewees perceive that the rapid development of crypto-assets and fluidity hinder the development of accounting guidance. Hence, continuous monitoring by standard-setters is required. The general consensus is that unless there are crypto-assets with economic characteristics and functionality that are pervasive enough to warrant a new accounting standard, principles of current accounting standards are robust to address gaps in accounting requirements for crypto-assets. Originality/value This study adds to the discussion on harmonising the current practices in accounting of crypto-assets. By examining perceptions of multiple stakeholder groups, this study provides insights into the applicability of current accounting standards to the classification, measurement and disclosure of crypto-assets. The findings will inform standard setters and aid their efforts towards providing formal guidance on the accounting of crypto-assets.


Biosensors ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 35
Author(s):  
Doudou Huo ◽  
Daodong Li ◽  
Songzhi Xu ◽  
Yujie Tang ◽  
Xueqian Xie ◽  
...  

As one of the pivotal signal molecules, hydrogen peroxide (H2O2) has been demonstrated to play important roles in many physiological processes of plants. Continuous monitoring of H2O2 in vivo could help understand its regulation mechanism more clearly. In this study, a disposable electrochemical microsensor for H2O2 was developed. This microsensor consists of three parts: low-cost stainless-steel wire with a diameter of 0.1 mm modified by gold nanoparticles (disposable working electrode), an untreated platinum wire with a diameter of 0.1 mm (counter electrode), and an Ag/AgCl wire with a diameter of 0.1 mm (reference electrode), respectively. The microsensor could detect H2O2 in levels from 10 to 1000 µM and exhibited excellent selectivity. On this basis, the dynamic change in H2O2 in the vein of tomato leaf under high salinity was continuously monitored in vivo. The results showed that the production of H2O2 could be induced by high salinity within two hours. This study suggests that the disposable electrochemical microsensor not only suits continuously detecting H2O2 in microscopic plant tissue in vivo but also reduces the damage to plants. Overall, our strategy will help to pave the foundation for further investigation of the generation, transportation, and elimination mechanism of H2O2 in plants.


2022 ◽  
pp. 287-305
Author(s):  
P. Rajalakshmy ◽  
R. Varun ◽  
Hency Jose P. Subha ◽  
K. Rajasekaran

Author(s):  
Bogyeong Lee ◽  
Hyunsoo Kim

Walking is the most basic means of transportation. Therefore, continuous management of the walking environment is very important. In particular, the identification of environmental barriers that can impede walkability is the first step in improving the pedestrian experience. Current practices for identifying environmental barriers (e.g., expert investigation and survey) are time-consuming and require additional human resources. Hence, we have developed a method to identify environmental barriers based on information entropy considering that every individual behaves differently in the presence of external stimuli. The behavioral data of the gait process were recorded for 64 participants using a wearable sensor. Additionally, the data were classified into seven gait types using two-step k-means clustering. It was observed that the classified gaits create a probability distribution for each location to calculate information entropy. The values of calculated information entropy showed a high correlation in the presence or absence of environmental barriers. The results obtained facilitated the continuous monitoring of environmental barriers generated in a walking environment.


Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 444
Author(s):  
Alexandro Catini ◽  
Rosamaria Capuano ◽  
Giuseppe Tancredi ◽  
Giulio Dionisi ◽  
Davide Di Giuseppe ◽  
...  

In aquaculture, the density of fish stock, use of feeding, and surrounding environmental conditions can easily result in an excessive concentration of harmful compounds that require continuous monitoring. Chemical sensors are available for most of these compounds, however, operative conditions and continuous monitoring in water make the development of sensors suitable for long and unattended deployments difficult. A possible solution is the development of engineered automatic labs where the uptake of sample and the contact with water is reduced and the use of a minimal quantity of reagents enables the implementation of reliable chemical assays. In this paper, a platform for automatic chemical assays is presented. The concept is demonstrated with the detection of nitrites based on the well-known colorimetric Griess reaction. The platform is centered around a lab-on-a-chip where reagents and water samples are mixed. The color of the reaction product is measured with low-cost optoelectronic components. Results show the feasibility of the approach with a minimum detectable concentration of about 0.1 mg/L which is below the tolerance level for aquaculture farms.


2022 ◽  
Author(s):  
Ghassan Maan Salim ◽  
Mohd Anwar Zawawi

Abstract Knee joint is an important part of human body. People with poor knee condition generally have limited physical movement, rendering to mental stress and agony. Knee pain can be categorized into three groups, known as acute injury, chronic injury and medical condition. Current technology to support the knee diagnosis and treatment procedures are limited to the use of manual goniometer, x-ray and magnetic resonance imaging (MRI). Alternative devices with continuous measurement capability for knee monitoring are minimum at this time, mainly due to the difficulties to cover the wide angle of the knee flexion. X-ray and MRI technologies are useful to have some insight on the knee problem, but they are not applicable for continuous monitoring. Aside from being expensive for general use of MRI, x-ray on the other hand can cause short-term side effects due to radiation exposure. The aim of this paper is to demonstrate the use of optical sensor integrated with mechanical gear system as a knee monitoring device. A plastic compartment, made by using 3D printer is used to place the sensor and the gear system. The design of the overall device allows direct attachment on a knee brace for easy placement on the knee. Based on current study, the proposed sensor has a range of motion between 0 deg. to 160 deg., 0.08 deg. resolution as well as support continuous monitoring of the knee. The sensor performance has been demonstrated for gait motion, ascending and descending stairs, sit-to-stand movement and maximum knee flexion applications.


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