bluuebunny/crossref_metadata_2025 huggingface dataset:
Role of workplace ostracism and self-esteem on workplace deviance
Authors:   University of Engineering and Technology, Zafar Usman , Mahmood Asif ,   Namal University
Published: February 2023

Being ostracized and resulting in interpersonal or organizational deviance is a pinching topic in research as well as in the practical world. Purpose. The present study analyses the relationship between workplace ostracism and two types of workplace deviance, i.e., interpersonal deviance (workplace incivility, workplace bullying, violence, workplace harassment, social undermining, organizational mobbing) and organizational deviance (work behavior deviated from certain norms), and examines theunexplored moderating role of self-esteem between these relationships. Study design. The respondents of the study were various managerial level employees from the food and textile sectors of Pakistan. Data from 380 employees were collected through a closed-ended, self-administered five-point Likert scaleusing employee intercept convenience-based sampling technique due to unavailability of the samplingframe. The partial least squares structural equation modelling (SEM) approach was utilized through SmartPLS software for quantitative results. Findings. Findings of the study revealed that ostracism isa significant factor in interpersonal and organizational deviance, but it seemed that organizational deviance is more strongly affected by ostracism. The subsequent results also justify that self-esteem is avaluable factor for these circumstances of deviance and ostracism. These findings direct the practitioners to nurture a positive work environment to mitigate the negative impact of ostracism. Value of results. Furthermore, off the job, social interactions and activities may bring employees closer to each other, reducing the chances of ostracism and raising self-esteem in employees.
Chronic Recoverable Neuropixels in Mice v1
Authors: A Aery Jones Emily
Published: February 2023

This protocol collection explains how to build a low-cost, lightweight system to implant 1 Neuropixels 1.0 probe or 2 Neuropixels 2.0 probes into mice, record during freely moving behavior, then recover the probes for future use. Other chronic recoverable designs: single 1.0 probe in mice: Juavinett et al, 2019 (https://elifesciences.org/articles/47188) multiple 1.0 probes in rats: Luo & Bondy et al, 2020 (https://elifesciences.org/articles/59716) single 2.0 probe in mice and dual or moveable 2.0 probes in rats: van Daal, Aydin, & Michon et al, 2021 (https://www.nature.com/articles/s41596-021-00539-9) overview of unpublished designs: Neuropixels 2021 course lecture 3.7 by Yoh Isogai (https://www.youtube.com/watch?v=7cZqYIiGvBQ&list=PLfhWmWntvjl64ti_a-MzHlwqwEU0ZlALb&index=18) Advantages of this design: Lightweight (entire assembly, including headbar, dental cement, and tape, weighs <3g for single 1.0 probe or <4g for dual 2.0 probes) Allows headfixed or freely moving recordings Quickly attaches to a headstage holder, which provides LEDs for tracking and a counterweight to encourage running Position and angle of internal mount on the probe adjustable before gluing, allowing implantation into any brain region, but custom adjustment is not required, allowing the same probe to be re-inserted into a variety of sites Unlike completely enclosed designs, the shank is uncovered during insertion for better visualization, yet doesn't require delicately surrounding the shank with a glue column Dual 2.0 probes: probes are independently insertable, so can set custom positions, depths, and angles for each Disadvantages of this design: Not suitable for larger animals (lightweight design likely can't withstand larger forces, flex cable remains exposed, moisture known to wick up shank into PCB in rats) External components are assembled around the probe during surgery rather than during assembly, so surgeries take slightly longer Less elegant than completely enclosed designs and requires a larger skull surface area for gluing Dual 2.0 probes: how close together the probes can get is limited by some of the components Assembly preview: Single 1.0 probe Dual 2.0 beta probes
Vitamin D deficiency in persons over 50 years of age with and without carotid artery atherosclerosis: a cross-sectional outpatient study
Authors: Mikhailova L. V. , Kovalenko M. A. , Litvinova L. S. , Gazatova N. D. , Vulf M. A.
Published: February 2023

Highlights. The association between vitamin D levels and estimated glomerular filtration rate and triglyceride levels was revealed in people with cardiovascular risk factors aged older than 50 years. Vitamin D deficiency was more frequently noted in patients with acute coronary syndrome. They also were more likely to have abdominal obesity and type 2 diabetes mellitus, indicating the association between vitamin D deficiency and metabolic syndrome. The high prevalence of both vitamin D deficiency and metabolic syndrome in the population necessitates further larger-scale studies to identify the relationship between vitamin D levels and cardiovascular risk factors.

Aim. To assess the level of vitamin D in people older than 50 years with the presence/ absence of carotid artery atherosclerosis.

Methods. The single-stage observational study was conducted, the study included 70 outpatients over 50 years of age, of which 17 (24%) were men and 53 (76%) were women. The mean age of the patients was 66 (60; 72) years. All examined patients underwent history taking, anthropometry, biochemical examination of blood plasma with the determination of lipid spectrum, glucose, creatinine and estimated glomerular filtration rate, echocardiographic examination. The presence of carotid atherosclerosis was determined by ultrasound examination of the carotid arteries. The study of the level of 25-OH vitamin D in blood serum was carried out by enzyme immunoassay (25-OH vitamin D ELISA).

Results. It was found that about half (46%) of the  examined  persons  have  insufficient  levels of vitamin D in the blood plasma, while its deficiency (less than 20 ng/mL) was determined in 9% of patients. Individuals with carotid atherosclerosis had slightly lower levels of vitamin D than those without it, but the differences did not reach statistical significance. In acute coronary syndrome survivors, there was a statistically significant decrease in vitamin D levels, the vast majority of these patients had diabetes mellitus and abdominal obesity. Statistically significant moderate relationships were found between vitamin D levels and triglyceride levels (r = –0.33; p<0.05) and estimated glomerular filtration rate (r = 0.26; p<0.05), which confirms the association of vitamin D deficiency with metabolic syndrome. No statistical regularity was found between the level of vitamin D and other laboratory biochemical parameters, as well as morphological changes in the heart and blood vessels.

Conclusion. Insufficient content of vitamin D in blood plasma is more common in individuals with a history of acute coronary syndrome, among them diabetes mellitus and abdominal obesity are more often detected, which confirms the relationship of vitamin D deficiency with metabolic syndrome.
Possibilities of a portable electrocardiogram and pulse wave recorder in detecting left ventricular systolic dysfunction
Authors: Sagirova Zh. N. , Kuznetsova N. O. , Gubina A. Yu. , Dhif I. , Mishakina N. Yu. , Kaloshina I. V. , Gognieva D. G. , Chomakhidze P. Sh. , Kopylov F. Yu.
Published: February 2023

Highlights. The article presents a novel and unique method for assessment of left ventricular systolic disfunction using electrocardiography and photoplethysmography data. This method will improve and simplify the detection of cardiovascular diseases.

Aim. To evaluate left ventricular (LV) systolic function using electrocardiogram (ECG) and photoplethysmogram (PPG) signals recorded by a single-channel ECG and PPG-based monitor.

Methods. The prospective study included 489 patients over 18 years old with various cardiovascular diseases. All participants underwent echocardiography to determine the main indicators of LV systolic function: LV ejection fraction (EF), LV outflow tract velocity time integral (LVOT VTI), and global longitudinal strain (GLS). Moreover, all patients underwent 1-lead ECG and PPG recording using a single-channel ECG and PPG-based monitor (CardioQvark). The obtained data were analyzed, and ROC curve analysis was performed.

Results. We have identified ECG and PPG parameters associated with a decrease in LV contractile function. During the analysis, the ECG, T-wave amplitude (TA) and RonsF parameters showed the highest diagnostic accuracy. With EF below 55%, the area under the ROC curve (AUC) was 0.822, sensitivity (Se) 80%, specificity (Sp) 69% in EF below 55% in TA; in RonsF AUC was 0.743, Se 81%, Sp 77%. With EF below 40%, AUC was 0.915, Se 85%, Sp 83% in TA, and in RonsF AUC was 0.844, Se 82%, Sp 82%. Diagnostic accuracy of ECG signals in case of LVOT VTI lower than 16 cm was measured: TA (AUC 0.755, Se 82%, Sp 70%), RonsF (AUC 0.620, Se 77%, Sp 72%). PPG signals were not significantly associated with reduced EF; however, the pulse wave parameters were associated with lower LVOT VTI: in DP-B0 AUC was 0.687, Se 71%, Sp 74%. The combination of ECG and PPG signals was significantly associated with EF below 40% (RonsF * DP-SEP (AUC 0.877, Se 86%, Sp 85%). ECG and PPG signals were not associated with LV GLS.

Conclusion. Assessment of LV systolic function can be performed by analyzing ECG and PPG signals recorded using a portable single-channel CardioQvark monitor.
Iodine intake of two-year-olds and adults in Iceland and estimation of the effect of using iodized salt in breads
Authors:   University of Iceland, Landspitali National University Hospital, Iceland, Gunnarsdóttir Ingibjörg , Jóhannesson Ari J ,   Landspitali National University Hospital, Iceland, Torfadóttir Jóhanna Eyrún ,   Directorate of Health, Iceland, Porta Zulema Sullca ,   Icelandic Food and Veterinary Authority, Birgisdóttir Bryndís Eva ,   University of Iceland, Þorgeirsdóttir Hólmfríður ,   Directorate of Health, Iceland
Published: February 2023

INTRODUCTION: Insufficient iodine status was recently identified in pregnant women in Iceland. Iodine fortification of salt is widely used to decrease the risk of iodine deficiency disorders, but the use of iodized salt has not been recommended in Iceland. The aim was to describe iodine intake among Icelandic adults and two-year-olds and estimate the effect of using iodized salt in bread. MATERIAL AND METHODS: Iodine intake was assessed using data from the Icelandic National Dietary Survey 2019-2021 (18-80 years, n=822) and a study of two-year-old children (n=124). Data on bread intake was used to estimate expected iodine intake if iodized salt was used in bread. The results are compared with recommended iodine intake (90 µg/day for two-year-olds and 150 µg/day for adults) and upper intake level (200 µg/day and 600 µg/day, respectively). RESULTS: Average iodine intake was 88 µg/day for children and 134 µg/day for adults. If all types of bread consumed would contain 20 µg of iodine in 100 grams, the average iodine intake would increase to 99 and 153 µg/day, respectively. With higher bread iodine content, >5% of two-year-olds would exceed the upper intake level, while concentration up to 70 µg/100 grams of bread would result in iodine intake below the upper intake level for adults. CONCLUSION: Use of iodized salt in bread corresponding to 20µg of iodine in 100 grams of bread seems safe for young children in Iceland. However, based on the current dietary habits, adding this amount of iodine to bread would not be sufficient to secure optimal intake of iodine in all adults.
Additive Number Theory: Notes and Some Problems
Authors: Shankar B.R.
Published: February 2023

A brief account of some of the major results in additive number theory is given along with a small list of problems.
Limit cycles of perturbed global isochronous center
Authors: Diab Zouhair , de Bustos Maria Teresa , López Miguel Ángel , Martínez Raquel
Published: February 2023

We apply the averaging method of first order to study the maximum number of limit cycles of the ordinary differential systems of the form ¨x + x = ε (f1(x, y)y + f2 (x, y)) , ¨y + y = ε (g1(x, y)x + g2 (x, y)) , where f1(x, y) and g1(x, y) are real cubic polynomials; f2(x, y) and g2(x, y) are real quadratic polynomials. Furthermore ε is a small parameter.
Near-lossless compression scheme using hamming codes for non-textual important regions in document images
Authors: Paikrao Prashant , Doye Dharmapal , Bhalerao Milind , Vaidya Madhav
Published: February 2023

Working at Bell Labs in 1950, irritated with error-prone punched card readers, R W Hamming began working on error-correcting codes, which became the most used error-detecting and correcting approach in the field of channel coding in the future. Using this parity-based coding, two-bit error detection and one-bit error correction was achievable. Channel coding was expanded further to correct burst errors in data. Depending upon the use of the number of data bits ‘d’ and parity bits ‘k’ the code is specified as (n, k) code, here ‘n’ is the total length of the code (d+k). It means that 'k' parity bits are required to protect 'd' data bits, which also means that parity bits are redundant if the code word contains no errors. Due to the framed relationship between data bits and parity bits of the valid codewords, the parity bits can be easily computed, and hence the information represented by 'n' bits can be represented by 'd' bits. By removing these unnecessary bits, it is possible to produce the optimal (i.e., shortest length) representation of the image data. This work proposes a digital image compression technique based on Hamming codes. Lossless and near-lossless compression depending upon need can be achieved using several code specifications as mentioned here. The achieved compression ratio, computational cost, and time complexity of the suggested approach with various specifications are evaluated and compared, along with the quality of decompressed images.
Handling translations of data for qualitative research
Authors: Qoyyimah Uswatun
Published: February 2023

Qualitative research conducted in a non-English speaking setting requires the researchers to prepare and present translations of data, and then to report on the project in English to reach a global audience. This paper considers the process and ethical considerations involved in such an invisible methodological phase. This includes activities undertaken before data analysis and at the point of data presentation in order to convey participants’ original meanings and fulfil translation ethics. It focuses on educational research using the constructivist-interpretive paradigm on the grounds that its knowledge construction process involves different parties and demands both researchers and the researched to co-construct knowledge. Therefore, researchers in this paradigm might encounter dilemmas around translating data generated from interviews with non-English speaking participants. This paper offers strategies to address translation dilemmas for bilingual researchers based on the existing literature and own experience.
Highly-Sensitive Cardiac Troponin-I and Beta-2-Glycoprotein-I IgA Antibodies May Guide Atherosclerosis Screening and Surveillance in Rheumatoid Arthritis
Authors: Karpouzas George , Ormseth Sarah , Hernandez Elizabeth , Budoff Matthew
Published: February 2023

Methods. The sample included 144 patients with complete biomarker data who underwent plaque evaluation with coronary computed tomography angiography; 95 were re-imaged within 6.9±0.3 years. Presence of >5 segments with plaque or coronary artery calcium >100 constituted extensive disease; lesions rendering >50% stenosis were considered obstructive. The Framingham 2008 cardiovascular risk score was included in all models. Results. Hs-cTnI added to the cardiovascular risk score increased area-under-the curve (AUC) from 0.710 to 0.729 and improved prediction accuracy for baseline plaque presence [Net Reclassification Improvement =0.538 (95% confidence interval 0.143-0.895)] and Integrated Discrimination Improvement (IDI) =0.035 (0.001-0.128). In contrast, a-b2GPI-IgA did not, and the combination offered no added benefit over hs-cTnI alone. While hs-cTnI alone did not predict plaque progression, a-b2GPI-IgA presence did (p=0.005), especially in patients with >median hs-cTnI (p=0.015). In patients with >median hs-cTnI, adding a-b2GPI-IgA to a cardiovascular risk score model predicting progression from non-extensive/non-obstructive to extensive/obstructive plaque increased AUC from 0.796 to 0.878 and improved model precision [IDI=0.277 (0.011-0.946)]. Conclusion. High hs-cTnI significantly improved prediction of baseline plaque presence and may trigger an initial non-invasive coronary atherosclerosis evaluation. A-b2GPI-IgA presence may justify a follow-up interrogation in patients with non-extensive, non-obstructive plaque at baseline.
Flipped classroom approach to global outreach: cross-cultural teaching of horizontal strabismus to Chinese ophthalmology residents
Authors:   University of Washington School of Medicine, Seattle, WA 98195, USA, Lu Randy , Lam Jocelyn ,   Eyehealth Northwest, Portland, OR 97209, USA, Enyedi Laura ,   Department of Ophthalmology, Duke University, Durham, NC 27708, USA, Yanovitch Tammy ,   Department of Ophthalmology, University of Oklahoma, Oklahoma City, OK 73019, USA, Gandhi Nandini ,   Department of Ophthalmology, University of California Davis, Sacramento, CA 95817, USA, Ding Leona ,   Department of Ophthalmology, University of Washington, Seattle, WA 98195, USA, Cabrera Michelle T ,   Department of Ophthalmology, University of Washington, Seattle, WA 98195, USA; Division of Ophthalmology, Seattle Children’s Hospital, Seattle, WA 98105, USA
Published: February 2023

AIM: To evaluate the flipped classroom model for teaching horizontal strabismus didactics in an ophthalmology residency program in China as part of a visiting professorship from the United States.
METHODS: Residents from an ophthalmology residency program in China were invited to participate in flipped classroom sessions taught by an experienced American ophthalmology faculty in 2018. Residents were instructed to watch a pre-class video lecture prior to the in-class-case-based activity. Content tests (5 Ophthalmic Knowledge Assessment Program style questions) and surveys were administered before and after the classroom sessions (100% response rate). These results were compared to that of an American cohort who were taught the same content.
RESULTS: The Chinese cohort of 12 residents preferred the flipped classroom to the traditional classroom at higher rates than the American cohort of 40 residents (92% vs 55%, P=0.04) and felt that all ophthalmology topics would be appropriate for the flipped classroom teaching style (P-values between 0.008 and <0.001). In both Chinese and American cohorts, we found that the exotropia curriculum saw a small but significant improvement in performance following the flipped classroom session (P=0.025 for Chinese residents; P=0.001 for US residents), whereas scores in both groups for the esotropia course did not significantly improve.
CONCLUSION: This is the first study to evaluate the flipped classroom model implemented by a visiting ophthalmology professor in a global outreach setting. The flipped classroom sessions are viewed favorably by the Chinese residents relative to the US cohort with a modest impact on knowledge. Decreased in-person interpreter requirement and increased student engagement make this model valuable in cross-cultural visiting professorship settings. Finally, the flipped classroom may lend itself well to a virtual format to prevent the transmission of COVID-19, although such a format requires further study.
Small incision lenticule extraction and femtosecond-assisted laser in situ keratomileusis in patients with deep corneal opacity: case series
Authors:   Department of Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China; Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, Zhejiang Province, China, Fang Zhi , Han Wei ,   Department of Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China; Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou 310009, Zhejiang Province, China
Published: February 2023

AIM: To report the safety, efficacy, and accuracy of small-incision lenticule extraction (SMILE) or femtosecond-assisted laser in situ keratomileusis (FS-LASIK) for the correction of myopia or myopic astigmatism in patients with deep corneal opacity denoted by anterior segment optical coherence tomography (AS-OCT).
METHODS: Four patients with monocular corneal opacity (3 due to mechanical injury, 1 due to a firecracker wound) were recruited and treated with refractive surgery (3 for SMILE, 1 for FS-LASIK combined with limbal relaxing incision (LRI). Preoperative ocular manifestations, surgical details, postoperative visual outcomes, corneal opacity parameters, and corneal topography were analyzed.
RESULTS: Preoperatively, spherical diopter ranged from -3.0 D to -4.75 D with cylinder ranging from -0.75 to -5.0 D, and corrected distance visual acuity (CDVA) ranging from 20/25 to 20/20. One eye’s corneal opacity was located in the central zone and three were in the mid-peripheral optical zone. Three patients underwent uneventful SMILE in both eyes, whilst one patient underwent FS-LASIK for high astigmatism in both eyes and LRI in the right eye. CDVA of the eye with corneal opacity ranged from 20/22 to 20/20 one to six weeks postoperatively. Two patients achieved better CDVA and no patients lost Snellen lines. The postoperative diopter was within ±0.75 D for all eyes. Significant edema existed above the corneal opacity in one eye and dissipated soon. No eccentric corneal topography or morphological anomaly of the corneal cap or flap was observed.
CONCLUSION: The cases demonstrate that SMILE or FS-LASIK is safe and effective to treat myopic astigmatism combined with deep corneal opacity lesions after comprehensive preoperative evaluation and appropriate candidate selection. FS-LASIK combined with LRI is also sufficient for correcting high astigmatism due to corneal scarring.
Lexical aspect in language and culture communication
Authors: Baissydyk Indira , Kuderinova Kuralay , Shakhanova Rozalinda , Rizakhojayeva Gulnara , Zhyltyrova Zhanar
Published: February 2023

This study is devoted to the study of the vocabulary of the English language of business communication. The role of vocabulary in natural semasiological systems has been repeatedly emphasized by leading scientists of domestic and foreign linguistics. To date, linguistics and, more broadly, philology has accumulated a wealth of experience in describing and systematizing the vocabulary of natural human languages. The most significant directions in the study of vocabulary include the following: separateness and integrity of the word, meaning and usage, philological foundations of lexical semantics and dynamics of relationships between different types of lexical meanings of the word, dialectics of lexicology and lexicography, synchrony and diachrony, scientific development of comparative semasiology and etymology, consistent differentiation of mono and polylex units, the doctrine of the phrase and justification of various types of idiomatic phraseology, identification of subsystems in the lexical domain of the language (homonymy, synonymy, antonymy, paronymy). This article examines authentic examples of modern English-language business discourse and describes some of the processes occurring in the vocabulary of business English: the emergence of new polylexemic business terms created by analogy with terminological units that have become widespread; the emergence of consubstantial terms as an indicator of the interaction of different lexical strata in the vocabulary of the English language of business communication, the development of phrasal verbs with terminating values.
Rethinking overtourism in the post-COVID-19 period: Is demarketing a solution?
Authors: Zengin Burhanettin , Colak Oguz , Cevrimkaya Mustafa , Sengel Umit
Published: February 2023

At the end of the first quarter of the 21st century, when international arrivals were increasing, the COVID-19 pandemic occurred and turned into a major health crisis that affected the whole world. It has been emphasized that there is a linear relationship between the spread of the pandemic and travel movements from the time the pandemic started to the present day. In this context, the aim of this study is to determine whether there is a relationship between overtourism and pandemic, which has emerged because of increasing touristic travels in recent years. Another aim of the study is to consider demarketing as a solution proposal in the fight against overtourism to prevent health crises such as COVID-19. In this context, 586 news in which the keywords of COVID-19, overtourism and demarket were used together in a certain period were examined and the obtained data were analyzed with the help of MAXQDA (analysis program for qualitative research) qualitative research analysis program. According to the relations between the themes reflected in the results of the study, demarketing can be expressed as a solution proposal for overtourism in the post-COVID-19 period.
Phase diagrams of the ternary systems NaBH4–NaOH–H2O, KBH4–KOH–H2O, NaBO2–NaOH–H2O И KBO2–KOH–H2O при -10°С
Authors:   Saratov State University, Churikov Aleksei Vladimirovich , Zapsis Konstantin Vasil'evich ,   Saratov State University, Khramkov V. V. ,   Saratov State University, Smotrov M. P. ,   Saratov State University, Churikov Mikhail Alekseevich ,   Saratov State University, Kazarinov Ivan Alekseevich ,   Saratov State University
Published: February 2023

A study of the solubility in the ternary systems NaBH4–NaOH–H2O, KBH4–KOH–H2O, NaOH–NaBO2–H2O и KOH–KBO2–H2O is of special fundamental and practical interest. The first two systems are used as a fuel and as a hydrogen source in hydrogen power engineering that includes the low-temperature fuel cells; borohydrides are converted into metaborates. Hence, the last two systems represent the discharged by-product. The performance of such mixtures is determined by the solubility of their components, negative temperatures being especially critical. Therefore, in the present work the solubility in the ternary systems was studied by means of isothermal saturation at – 10°C. The compositions of the equilibrium liquid and solid phases and compositions of the eutonic and peritonic equilibria, and the coordinates of the homogeneous solution ranges have been determined. The best solubility of the solid components is characteristic of systems NaBH4–NaOH–H2O and KBO2–KOH–H2O.
Current leads corrosion and the problem of diagnostics of fluorocarbon-lithium cells
Authors:   National Research University ", Fateev Sergei Anatol'evich ,   MEI", Tuseeva Elena Konstantinovna ,   Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS, Skundin Aleksandr Mordukhaevich ,   Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Published: February 2023

Corrosion behavior of niobium current leads of fluorocarbon-lithium cells are studied. Polarization measurements at plain niobium leads and at such leads in a contact with fluorocarbon cathode in an electrolyte of fluorocarbon-lithium cell were carried out. Besides, behavior of niobium lead directly in a feedthrough of real cells was studied. The contact of niobium with fluorocarbon cathode is shown to result in toughening of corrosion conditions and in possible niobium depassivation. Long-term cells storage at elevated temperature was shown to result in complete corrosion dissolution of niobium leads. Certain correlation between cell's OCV and corrosion intensity was obtained.
Energy installation system of navigational equipment with computer control
Authors:   JSC NIAI Istochnik, Kolikova G. A. , Yakovleva I. L. ,   JSC NIAI Istochnik, Yudilevich S. R. ,   JSC NIAI Istochnik, Ezerskii V. V. ,   JSC NIAI Istochnik, Klochkov V. A. ,   JSC Tekhtrans, Korostelev I. A. ,   JSC Tekhtrans
Published: February 2023

Results of field trials of the prototype energy installation system of navigational equipment (SNE) with computer control are presented. The energy installation SNE is based on friendly environmentally photovoltaic battery, rechargeable lead-acid battery and a new predictive controller.
Electrochemical and mass-transfer processes in the system of electrochemical synthesis of nickel hydroxide
Authors:   Ukrainian State Chemical and Technological University, Koshel' Nikolai Dmitrievich , Malyshev Valerii Vladimirovich ,   Ukrainian State Chemical and Technological University
Published: February 2023

Mass-transfer processes are considered in a double-chamber running electrolyzer for the synthesis hydroxide of nickel (ІІ) from solution of NiSO4. The product of Ni(ОН)2 appears at co-operation of ions of Ni2+ the ions of ОН-, which are generated on a cathode. The mathematical model of processes is formulated. Decisions show dependence of concentrations of ions in a reactionary area from the managed parameters of process and current.
Pyrolized carbon electrode material for supercapacitors obtained from organic raw materials of vegetable nature
Authors:   Institute of Problems of Materials Science of I. N. Frantsevich NAN of Ukraine, Kovalyuk Z. D. , Yurtsenyuk S. P. ,   Institute of Problems of Materials Science of I. N. Frantsevich NAN of Ukraine, Bodnarashek V. M. ,   Institute of Problems of Materials Science of I. N. Frantsevich NAN of Ukraine, Netyaga V. V. ,   Institute of Problems of Materials Science of I. N. Frantsevich NAN of Ukraine, Yurtsenyuk N. S. ,   Institute of Problems of Materials Science of I. N. Frantsevich NAN of Ukraine
Published: February 2023

In this paper we investigate carbon materials prepared from different organic raw materials of vegetable nature by the method of pyrolysis. Properties of obtained carbon substances are established by the methods of impedance spectroscopy, voltamperometry, and chronoamperometry. Starting from the data of electron paramagnetic resonance, impedance spectroscopy and an analysis of the Regon diagrams it is concluded that the obtained carbon materials contain carbon nanostructures in the form of bungles of multiwall nanotubes. On the basis of the obtained vegetable-based carbon materials laboratory patterns of supercapacitors with an aqueous alkaline electrolyte were fabricated and investigated.
Electrochemical activity of the cathodes with chemical coatings Ni-S-Fe
Authors:   Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS, Kryukov Yu. I. , Lukovtsev Vyacheslav Pavlovich ,   Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS, Petrenko Elena Mikhailovna ,   Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Published: February 2023

The electrochemical activity of nickel mesh cathodes activated by electrocatalysts of chemically deposited coatings Ni-S-Fe is investigated. The maximum reduction of overvoltage at current density 6 kA/m2 and temperature 70°C is 0.34 V. Comparison of the electrochemical activity of such cathodes with similar cathodes described in the scientific literature revealed that at the same temperature and same overvoltage the current density is twice higher than for the known electrodes. It is shown that with increasing temperature from 20 to 90°C overvoltage at the current density 4kA/m2 reduced by 110mV. Testing of the electrodes with electrocatalysts Ni-S-Fe in the laboratory electrolyser for 850 hours of continuous operation at current density 12kA/m2 indicate the stability of their electrochemical activity.
ANTAGONISTIC ACTIVITY OF LACTOBACILLI PROBIOTIC STRAINS IN CO-CULTIVATION
Authors: Strashnova I. V. , Yamborko G. V. , Vasylieva N. Yu.
Published: February 2023

SummaryAim. To investigate the antagonistic properties of multistrain compositions and consortia created on the basis of probiotic strains of bacteria of the genus Lactobacillus.
Methods. A biocompatibility was investigated by co-cultivation of lactobacilli strains on MRS-agar medium. To create the compositions used separately grown daily broth cultures in certain proportions, to create consortia - strains of lactobacilli in the appropriate proportions were cultivated together in MRS broth during 24 h. The antagonistic activity of the created combinations against 10 test cultures was determined by the well-diffusion method.
Results. According to the results of biocompatibility studies, strains of Lactobacillus spp. 175, M2 and M3 were selected. These strains were basis for creation 7 compositions and 7 consortia with certain ratios of broth cultures of these strains. Lactobacilli in the compositions show slightly better antimicrobial properties compared to consortia. The composition of Lactobacillus sp. M2 + Lactobacillus sp. M3 + Lactobacillus  sp. 175 in a ratio of 1: 2: 2 showed the best antagonistic activity against all test strains of microorganisms.
Conclusions. Created on the basis of probiotic strains of Lactobacillus spp. 175, M2 and M3 compositions and consortia are strong antagonists of different test cultures. Manifestation of activity depends on the method of combining strains in combination, the best effect is achieved by growing each strain separately with subsequent mixing of broth cultures. The most antagonistically active is a composition based on broth cultures of Lactobacillus sp. M2 + Lactobacillus sp. M3 + Lactobacillus sp. 175 in a ratio of 1: 2: 2.
Wind safety of rubber trees in plantations: methodological analysis of bending experiments on inclined standing trees
Authors: ENGONGA EDZAND Arnauld Clauvy's , NIEZ Benjamin , HEIM Lucie , FOURCAUD Thierry , GRIL Joseph , MOULIA Bruno , BADEL Eric
Published: February 2023

Because of their ability to produce latex for industrial applications, rubber trees are grown intensively in large plantations. Latex is harvested by bleeding off the bark, generating a carbon sink for the tree that impairs its secondary growth and consequently weakens the mechanical resistance of the trunk. In order to study the sensitivity of rubber tree clones to wind breakage, we propose a complete mechanical model that sheds light on the different morphological and mechanical parameters involved in trunk resistance to strong wind events. The model requires experimental data that can be recorded from the structural description of a tree and from non-destructive bending tests performed in situ in plantations. The results provide the list of required parameters and indicate their relative importance for estimating the mechanical behaviour of rubber trees, with a view to comparing clones for breeding purposes.
Power Sharing and Zoning Formula for Managing Nigeria's Diversity: A Case of the Fourth Republic
Authors: Sule Babayo , Sambo Usman
Published: February 2023

Nigeria is composed of plural and multi-complex societies with multiple ethnic groups of up to 500 cultural diversities. This country surmounts the obstacles of managing diversity through an informal setting popularly identified as a zoning formula and power sharing among the federating units. The pattern and trend in which the practice maintains Nigeria's diversity is a good lesson for a study of plural societies and consociationalism. The study aimed to examine the nature and dimension of zoning formula and power sharing in Nigeria and analyze how the strategies of zoning formula and power sharing helped manage diversity in Nigeria. The study was identified as a descriptive qualitative method that sought to describe Nigeria's strategy for managing diversity. The study uncovered that power sharing and zoning consist of constitutional and unconstitutional ones, with the former supported by legal provisions. Simultaneously, the latter is designed based on principles and gentleman agreements. The study recommended that constitutional provisions should never be sacrificed on the altar of the personal elite agreement. Instead, sharing power through zoning should be retained to prevent suicide for credibility and competency. It is a plausible shock absorber that will continue to sustain Nigerian federalism, and other plural societies can borrow this model as a political means of resolving diversities.
ASEAN Integration in the Context of Disaster Management
Authors: Arundhati Gautama Budi , Ulum Muhammad Bahrul , Afera Gebrekiros Goytom
Published: February 2023

The COVID-19 pandemic, a globally unprecedented disease outbreak, has alarmed all governments to reconsider the importance of disaster management policies at the domestic level. At the same time, handling transboundary disasters was another challenge faced by regional organizations such as the Association of Southeast Asian Nations (ASEAN). As a result of this pandemic, all member states tended to act more independently by closing their territories and isolating their citizens from cross-border migration. This paper aimed to examine ASEAN's existing measures to address the COVID-19 pandemic, following the importance of considering domestic policies taken by its member states to portray the possible action at the regional level. In practice, each ASEAN member state had various approaches, from strict lockdowns such as those implemented in Singapore to Indonesian policies that were far from being prepared. While COVID-19 is a non-natural disaster but has had a devastating impact on Southeast Asia, the future of regional integration is at stake. This paper showed that each member state's different social, economic, and political situations influenced the absence of early common practices at the domestic level to overcome this pandemic. Simultaneously, market stability in Southeast Asia was the key to regional development, whereas this pandemic harmed ASEAN's aim to meet economic integration. This paper suggested that ASEAN should establish guidelines regarding disaster management as experienced during the COVID-19 pandemic for member states' domestic policies to anticipate possible adverse episodes in the future that may hamper the integration progress.
DIGITAL TECHNOLOGIES IN TEACHING CONDUCTING
Authors:   Research worker and Lecturer, Institute of Music, Faculty of Arts, University of Warmia and Mazury in Olsztyn, Poland, Rosiński Adam
Published: February 2023

The objective of this paper was to invent a digital technology, that could be used in a simple way in online conducting classes, throughout specialized education of students at universities. Transition to remote teaching due to Covid-19 pandemic has highlighted the gap in this field. This article presents a concept of using a specialised software, that is mapping in a 3D space and analysing the movement of human body in real time. The software combines two images provided by the cameras installed in a smartphone and a computer. Common presence of laptops and smartphones in human life makes it possible to omit the costs of buying specialised equipment. The technology was researched with professors and students involved, to verify: software stability, level of detail in the rendered movements of the virtual conductor after mapping the professors, understandability of the commands given to the students, students’ performance in the tasks and the threshold above which the software was recognising moves of an individual as correct. Described software is constantly being developed and adapted to meet the needs of a new user, which may give future opportunities to use it also for other educational or non-educational purposes.
A case study of informed consent in Indonesian Law Number 29, 2004
Authors: Sosiawan Agung , Sushanty Vera Rimbawani , Wahjuningrum Dian Agustin , Setiawan Fery
Published: February 2023

Background: Informed consent is an agreement between the doctor/the provider of medical services and the patient/the recipient of medical services. This relationship between these parties has changed from a paternalistic to a contractual relationship due to technological shifts. Doctors are obliged to notify the patient of all the risks and benefits of a procedure while respecting their autonomy by not intervening the decision-making process. This article will look at three government and academic hospitals in Surabaya, as informed consent has to be practiced in all medical settings. Purpose: This study aims to review the role of informed consent according to Law Number 29, 2004. Review: This study aims to discuss the characteristics of informed consent under Law Number 29, 2004, because there are too few articles addressing this issue. It also explains the roles of the patient and the doctor/dentist in informed consent according to this piece of legislation. Conclusion: According to Article 184, informed consent provides vital evidence that can be used to hold doctors and dentists legally accountable because it contains information about standard operating procedures (SOPs) that medical professionals are legally required to follow. Guidelines for informed consent are given in Law Number 29, 2004, Article 45, paragraph 2.
Prevalence of dental anomalies in pediatric patients at Dental and Oral Hospital of Universitas Muhammadiyah Yogyakarta
Authors: Anggraini Laelia Dwi , Augustyana Denna Idryareza , Sekarjati Nurrofi
Published: February 2023

Background: A dental abnormality is a deviation from the normal shape and structure of the teeth due to interference during growth and development. Various kinds of abnormalities occur, such as anomalies in the size, shape, position, number, and structure of the teeth. These conditions cause problems in the arch length and occlusion of the maxilla and mandible. Purpose: This study aimed to describe the prevalence of developmental dental anomalies in pediatric patients at the Dental and Oral Hospital of Universitas Muhammadiyah Yogyakarta (UMY) and its networks (Qatrunnada Kindergarten, Budi Mulia Dua Taman Siswa Kindergarten, and Muhammadiyah Sapen Pusat Primary School). Methods: A descriptive observational study with a cross-sectional design was conducted. There were 10,714 pediatric patients included. Results: The prevalence of developmental dental anomalies in pediatric patients at Dental and Oral Hospital, UMY and its network was 0.30%. The prevalence of mesiodens, hypodontia, and fusion dental anomalies were 0.14%, 0.056%, and 0.028%, respectively. There was a 0.019% prevalence of microdontia, peg tooth, and amelogenesis imperfecta. The prevalence of taurodontia and gemination was 0.009%. Conclusion: Dental anomalies occurred more frequently in male pediatric patients, and mesiodens was the most prevalent.
Interdisciplinary management of Class III malocclusion with cleft lip and palate
Authors: Iswati Retno , Farmasyanti Cendrawasih Andusyana , Ayub Aulia , Kuijpers-Jagtman Anne Marie , Alhasyimi Ananto Ali
Published: February 2023

Background: A cleft lip and palate (CLP) is one of the most common birth defects of the face. Individuals with CLP often have a significant growth disturbance of the maxilla along three dimensions, resulting in skeletal Class III malocclusion and cross bite. Oral rehabilitation can be complicated. Purpose: The purpose of this case study was to highlight the necessity of sequential interdisciplinary management to improve facial esthetics and correct functional disturbances for a patient with CLP. Case: The patient was a 20-year-old woman complaining of the unpleasant appearance of her upper front teeth. She had a concave profile with Class III skeletal patterns (SNA: 78O; SNB: 82O; ANB: -4O), cleft lip and palate, and an anterior and posterior crossbite. Case Management: A combined orthodontic, endodontic, conservative, periodontic, and prosthetic approach was proposed to achieve normal occlusion, function, and a harmonious profile. The combination of rapid maxillary expansion and fixed orthodontics (standard edgewise appliance) established good general alignment and a Class I relationship. After 15 months of treatment, both the posterior and anterior crossbite had been completely corrected. In order to address the gingival margin differences, the patient was instructed to make another appointment with the periodontist and was referred to the restorative dentist for veneer restorations and the prosthodontist for fabrication of a removable retainer with obturator. Conclusion: This interdisciplinary approach greatly improved both esthetics and function. The patient was satisfied with the results achieved.
Bidirectional Recurrent Neural Network Language Model: Cross Entropy Churn Metrics for Defect Prediction Modeling
Authors:   Research Scholar, Department of Computer Science, Auxilium College, Vellore, India, R Nivetha , S Kavitha ,   Assistant professor, Department of Computer Science, Auxilium College, Vellore, India
Published: February 2023

Software Defect Prediction (SDP) plays an active area in many research domain of Software Quality of Assurance (SQA). Many existing research studies are based on software traditional metric sets and defect prediction models are built in machine language to detect the bug for limited source code line. Inspired by the above existing system. In this paper, defect prediction is focused on predicting defects in source code. The objective of this thesis is to improve the software quality for accurate defect prediction is source code for file level. So, that it helps the developer to find the bug and fix the issue, to make better use of a resource which reduces the test effort, minimize the cost and improve the quality of software. A new approach is introduced to improve the prediction performance of Bidirectional RNNLM in Deep Neural Network. To build the defect prediction model a defect learner framework is proposed and first it need to build a Neural Language Model. Using this Language Model it helps to learn to deep semantic features in source code and it train & test the model. Based on language model it combined with software traditional metric sets to measure the code and find the defect. The probability of language model and metric set Cross-Entropy with Abstract Syntax Tree (CE-AST) metric is used to evaluate the defect proneness and set as a metric label. For classification the metric label K-NN classifier is used. BPTT algorithm for learning RNN will provide additional improvement, it improves the predictions performance to find the dynamic error.
How “Berry Phase” Analysis of Non-adiabatic Non Hermitian Systems Reflects Their Geometry
Authors: Jeynes Chris
Published: February 2023

There is great current interest in systems represented by non-Hermitian Hamiltonians, including a wide variety of real systems that may be dissipative and whose behaviour can be represented by a "phase" parameter that characterises the way "exceptional points" (singularities of various sorts) determine the system. These systems are briefly reviewed with an emphasis on their geometrical thermodynamics properties.