Improving the sensitivity of new passive optical fiber ring sensor based on meta-dielectric materials

Afroozeh, Abdolkarim; Zeinali, Behrad

doi:10.1016/j.yofte.2021.102797

Cited by 9 publications

(5 citation statements)

References 45 publications

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“…That is, getting credit has a significant relationship with profitability. The business environment has a positive and significant relationship on the financial performance of world's top companies (Khazaei,[21]). Therefore, this hypothesis is confirmed.…”

Section: Discussionmentioning

confidence: 99%

The Association between Business Climate, Happiness, and Corporate Profitability

Nabeel¹

2023

Preprint

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Business and investment in any area requires the provision of an appropriate and secure institutional environment.One of the factors that helps to expand businesses and increase corporate profits is the right business environment. Avoidingcomplicated administrative bureaucracy, lending and credit, proper international trade, and the ease of obtaining the necessarypermits will be helpful in this regard. On the other hand, businesses can perform better in a happy and stress-free environment.Happiness is an emotional state characterized by feelings of joy, satisfaction, contentment, and fulfillment. While happiness hasmany different definitions, it is often described as involving positive emotions and life satisfaction. The purpose of the presentstudy is to investigate the relationship between the business environment and happiness indicators with corporate profitability.For this purpose, 175 top companies in the world from 2013 to 2018 that were profitable among the top 500 companies each yearwere selected as the statistical population. World Happiness annual report, Doing Business annual reports, and Fortune site wereused to collect the data. Also the data analysis was done according to the panel data method using Stata software. The resultsshows that in general, there is a positive relationship between business environment and happiness indicators corporateprofitability.

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Section: Discussionmentioning

confidence: 99%

The Association between Business Climate, Happiness, and Corporate Profitability

Nabeel¹

2023

Preprint

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“…The sensitivity and selectivity of an impedance-based sensor are determined not only by the dielectric material being probed but also by the technique used and the method of analysis [68][69][70][71]. We note an array of other sensor methodologies to probe dielectrics, including pressure/strain-induced capacitive changes [72,73], optical detection [74][75][76], and chemiresistance/conductometrics [77][78][79][80]. The general challenge of choosing a dielectric material for airborne sensing lies in the trade-off between sensitivity and selectivity: If a material is sensitive to one analyte, it is often sensitive to many analytes, reducing its selectivity considerably.…”

Section: Discussionmentioning

confidence: 99%

Magnetic and Impedance Analysis of Fe2O3 Nanoparticles for Chemical Warfare Agent Sensing Applications

Soliz,

Ranjit,

Phillips

et al. 2023

Magnetochemistry

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A dire need for real-time detection of toxic chemical compounds exists in both civilian and military spheres. In this paper, we demonstrate that inexpensive, commercially available Fe2O3 nanoparticles are capable of selective sensing of chemical warfare agents (CWAs) using frequency-dependent impedance spectroscopy, with additional potential as an orthogonal magnetic sensor. X-ray magnetic circular dichroism analysis shows that Fe2O3 nanoparticles possess moderately lowered moment upon exposure to 2-chloroethyl ethyl sulfide (2-CEES) and diisopropyl methylphosphonate (DIMP) and significantly lowered moment upon exposure to dimethyl methylphosphonate (DMMP) and dimethyl chlorophosphate (DMCP). Associated X-ray absorption spectra confirm a redox reaction in the Fe2O3 nanoparticles due to CWA structural analog exposure, with differentiable energy-dependent features that suggest selective sensing is possible, given the correct method. Impedance spectroscopy performed on samples dosed with DMMP, DMCP, and tabun (GA, chemical warfare nerve agent) showed strong, differentiable, frequency-dependent responses. The frequency profiles provide unique “shift fingerprints” with which high specificity can be determined, even amongst similar analytes. The results suggest that frequency-dependent impedance fingerprinting using commercially available Fe2O3 nanoparticles as a sensor material is a feasible route to selective detection.

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“…Harmonics is the presence of spectral components whose frequencies are multiplies the fundamental frequency. Harmonics occur due to, the voltage generated by synchronous generators are not exactly sine wave due to the deviation from the ideal form of generators, the electrical power transmitted from generating stations to the load is not completely linear for number of reasons such as nonlinear power transformers due to the saturation of magnetic flux in the iron core of the transformer, and transformation from AC voltage to DC voltage and vice versa occur using power electronic components [6]. According to IEEE standards for the system of less than 69 kV the harmonics distortion limits are 3% for individual voltage and 5% for total harmonics distortion [7].…”

Section: Figure 1 Classification Of Power Quality Problemsmentioning

confidence: 99%

“…The output from each node in this layer is obtained by multiplying between the incoming signal from third layer and the set of parameters. Output from each node in the forth layer O 4 i=Wni*fi = Wni*(pix + siy + ti) (6) where (p, s and t) are the parameters for each node and it is called the consequent parameters.…”

Section: Dynamic Voltage Restorer Based On Fuzzy Neural Optimized Fuz...mentioning

confidence: 99%

Power quality improvement using a dynamic voltage restorer for non-linear loads

Gebreel¹

2023

Preprint

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Improving the sensitivity of new passive optical fiber ring sensor based on meta-dielectric materials

Cited by 9 publications

References 45 publications

The Association between Business Climate, Happiness, and Corporate Profitability

The Association between Business Climate, Happiness, and Corporate Profitability

Magnetic and Impedance Analysis of Fe2O3 Nanoparticles for Chemical Warfare Agent Sensing Applications

Power quality improvement using a dynamic voltage restorer for non-linear loads

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