bluuebunny/crossref_metadata_2025 huggingface dataset:
Demonetization and Movement Towards Digital Cashless Indian Economy
Authors: Bhattacharyya Rajib
Published: September 2022

One of the greatest painful, un-stabilizing self-imposed macroeconomic blows on the Indian economy occurred in the absence of a short-term crisis when the government decided to announce a major change in the macroeconomic environment by demonetizing the high value currency notes – of Rs 500 and Rs 1000. These two denominations ceased to be legal tender from midnight of 8th of November 2016. The reasons offered for demonetization are two-fold: one, to control counterfeit notes that could be contributing to terrorism, in other words a national security concern; and second, to undermine or eliminate the “black economy.” It has also been a step forward towards a digital cashless economy. In this study an attempt is being made to present a discussion on both the short- and long-run effects of demonetization. It attempts to throw light on the impact of some macroeconomic variables—GDP, sectoral composition, industrial production, inflation, employment—using secondary time-series analysis. The empirical analysis clearly reveals that contraction of currency in circulation was one of the most important factors responsible for decrease in GDP in India after the period of demonetization. Apart from the issue of transition, confronted by the banking system, the government initiative was needed to neutralize the short-term, medium-term, and long-term effects particularly on regularization of cash flows, withdrawals, income, employment, inflation, consumption, and production. Moreover, cyber and other digital security measures were also essential to curb any kinds of frauds and encourage people towards a more digital cashless economy.
The Effect of Agency Problem and Internal Control on Credit Risk at Commercial Banks in Vietnam
Authors: Kim Quoc Trung Nguyen
Published: September 2022

This study examines the effect of agency problem and internal control on credit risk under corporate governance theory at Vietnamese joint-stock commercial banks. Using the quantitative methods, including pooled Ordinary Least Squares, Fixed Effect Model, and Random Effect Model, this paper shows that the agency problem is a statistically significant variable. That means it is considered the most practical mechanism in corporate governance for controlling credit risk. Besides, the findings also highlight the importance of internal control components to monitor and mitigate credit risk.
Meta-Heuristic-Based Hybrid Resnet with Recurrent Neural Network for Enhanced Stock Market Prediction
Authors: Reddi Sowmya Kethi , Babu Ch Ramesh
Published: August 2022

This paper is to design a new hybrid deep learning model for stock market prediction. Initially, the collected stock market data from the benchmark sources are pre-processed using empirical wavelet transform (EWT). This pre-processed data is subjected to the prediction model based on hybrid deep learning approach by adopting Resnet and recurrent neural network (RNN). Here, the fully connected layer of Resnet is replaced with the RNN. In both the Resnet and RNN structures, the parameter is optimized using the probabilistic spider monkey optimization (P-SMO) for attaining accurate prediction. When analyzing the proposed P-SMO-ResRNN, it secures 6.27%, 12.26%, 15.13%, 13.61%, and 14.10% more than RNN, DNN, NN, KNN, and SVM, respectively, regarding the MASE analysis. Hence, the proposed model shows enhanced performance. With the elaborated model and estimation of prediction term based on several analyses, this work supports the stock analysis research community.
The Counterproductive Effects on Learning Achievement and Intrinsic Motivation for Ludicization as an Online Learning Pedagogy Involving Game Elements
Authors: Zhang Qi , Yu Zhonggen
Published: August 2022

This study investigated the actual efficiency of ludicization, a game-related pedagogy that integrates game elements with online learning based on ludic metaphorization of educational contexts, by identifying whether it exerts counterproductive effects on learning achievement and intrinsic motivation. This study involved adapted versions of CET-6 (College English Test-6) and Harter's intrinsic motivation scale to assess learning achievement and intrinsic motivation, respectively. ANCOVA revealed that ludicization showed counterproductive effects on posttest scores (N = 36, M = 62.910, SD = .865) compared with the control group (N = 36, M = 63.937, SD = .865). ANOVA suggested that ludicization exerted counterproductive and insignificant effects on intrinsic motivation-related subscales: challenge, curiosity, and independent mastery. The main conclusion was that ludicization would exert insignificant or even counterproductive effects on learning achievement and intrinsic motivation. These findings implied that we should not take positive effects of game-related pedagogies for granted.
Relational Benefits as Predictors of Relationship Quality Outcomes in Online Retailing
Authors: Maduku Daniel K. , Mathaba Ryan L.
Published: September 2022

The present study examines the extent to which structural assurance mechanisms and economic benefits of online shopping are used by online shoppers as cues to infer the relational benefits of confidence and special treatment, respectively. The study further posits that these relational benefits foster relationship quality outcomes for online retailers. The study's findings—based on survey data obtained from 580 online shoppers—suggest that the online retailing structural assurance mechanisms and the selected economic benefits online shopping positively predict online shoppers' special treatment benefits and confidence benefits. The results also show that special treatment benefits and confidence benefits positively predict relationship quality outcomes. The findings also show how the relational benefits serve as mediating mechanisms through which the online retailing structural assurance features and customisation and functional convenience affect the relationship quality outcomes.
Proposal to Increase Resistance of Masonry Structures Low-Storey Buildings
Authors: Vejvara Luděk
Published: August 2022

Increasing the durability of brick structures is a current requirement for reducing damage in particular natural disasters, over-pressure wind effects and extraordinary loads.The structures are designed today according to valid standards and on the basis of empirical experience. They are designed for extraordinary effects only in cases where this is required by regulations, especially fire regulations. For brick structures, it is often followed by established procedures and catalogue recommendations, and the solution of these structures is often considered banal. However, what if the damage exceeds the effects set by the standards. Therefore, this contribution is devoted to simple instructions for increasing the durability of low-floor masonry buildings above the normal limit given by the current construction and the applicable regulations.
Ray Tracing of Thin PERC Silicon Solar Cells with Cone Textures
Authors: Pakhuruddin Mohd Zamir , Md. Noor Nur Afidah
Published: August 2022

Thinning of crystalline silicon (c-Si) wafer is a promising approach to reduce the technology cost of passivated emitter rear cell (PERC) solar cell. However, reducing the wafer thickness compromises light absorption, hence short-circuit current density (Jsc) in the solar cell. This necessitates effective light trapping in the device. In this work, upright cone textures are incorporated on the surface of 50 μm PERC monocrystalline silicon solar cell. SunSolve ray tracer is used to simulate the optical and electrical properties of the solar cell within 300-1200 nm wavelength region. Besides, the solar cell is also simulated with a front silicon nitride (SiNx) anti-reflective coating (ARC) on the cone textures. From the results, the thin PERC solar cell with cone textures and SiNx ARC demonstrates Jsc of up to 38.8 mA/cm2 and conversion efficiency of 20.4%. This is a significant performance improvement when compared to the planar cell, with Jsc of 25.1 mA/cm2 and efficiency of 13.1%. The improvement is attributed to the enhanced broadband light absorption and increased external quantum efficiency in the device.
Static Analysis of Sandwich Composite Panels
Authors: Zlamalova Pavlina , Stepanek Petr , Girgle Frantisek , Kostiha Vojtech , Daněk Petr
Published: August 2022

This paper describes the development of a sandwich composite beam based on FRP materials which is a suitable alternative to reinforced concrete beams in specific applications. These FRP materials show higher durability and stability compared to reinforced concrete in aggressive environments (e.g. wastewater treatment plants). Compared to pultruded FRP beams, the developed solution better utilizes the properties of the sub-components. The results of this research suggest that the optimum use of composite materials is when the upper and lower flanges of the beam consist of pultruded composite profiles in the TT cross-section and the standing composite grating; this creates a relatively stiff beam with a high load-bearing capacity and resistance to aggressive environments at a very low self-weight. The final properties of this beam can be adjusted thanks to the variability of the dimensions of the web as well as the variability of a suitable laminate surface treatment. This in the final combination creates a sandwich composite structure. The behaviour of the composite beam is then confirmed in this paper using a four-point bending test. Different configurations of the beam design allowed us to determine the influence of the laminate surface layer (verification of the sandwich functionality), but also the influence of the beam connection at the standing point on the resulting behaviour. The results of the experiments demonstrated the optimal physical and mechanical parameters of the sandwich composite beam structure and gave us insights for further use of this type of structure.
Analysis of the Leaf Spring Failure in Light Duty Dump Truck
Authors: Husaini Husaini , Farhan Muhamad , Ali Nurdin , Putra Teuku Edisah , Anshari Rully , Suherman Kevin
Published: August 2022

This research analyzed the causes of failure in the leaf spring of a cold diesel Dump Truck. The test was conducted in the form of hardness using the Rockwell method and a hardness value of 104.8 HRB while microstructure analysis was used to view and identify fracture surfaces through SEM and optical microscope. Furthermore, the distribution of each spring load was determined by analytical analysis and found to be 28983 N while the chemical composition was analyzed by comparing the spring microstructure with the AISI 5150 standard. The finite element analysis conducted with the FEMAP software showed the maximum stress and strain values in the leaf spring were recorded on the left and right sides. The stress intensity factor (KI) around the end of the initial crack was also found to be greater than the fracture toughness of the material (KIC), thereby, causing the initiation and propagation of cracks in the leaf springs. It was, therefore, concluded that the failure in the spring was due to an initial defect caused by the dynamic load experienced by the spring, thereby, leading to the initiation and propagation of cracks up to the final fracture.
Morphology, Crystal Size and Crystallinity Degree of Silica-Calcium Phosphate Composite (S) and Apatite Cement Formulation - In Vitro Bioactivity Test
Authors: Artilia Ira , Sidiqa Atia Nurul , Fakhira Zalfa Puspa , Zakaria Myrna Nurlatifah , El-Ghannam Ahmed , Cahyanto Arief
Published: August 2022

Silica-calcium phosphate nanocomposite (SCPC) is a porous bioactive resorbable bioactive ceramics. Incorporating apatite bone cement (AC) formulation of tetracalcium phosphate-dicalcium phosphate dihydrate and SCPC has contributed to the higher mechanical strength of a new prototype apatite cement formulation. This in-vitro experiment aims to investigate the bioactivity of AC formulation using simulated body fluid (SBF). The samples consist of two groups of AC formulations (n=4). The first group, AC with 10% SCPC and the second group AC without SCPC, was immersed in the SBF for 14 days. The samples before and after immersion were analyzed by X-Ray Diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDS), and Scanning Electron Microscope (SEM). The samples' size and degree of crystallinity were analyzed statistically using Shapiro-Wilk, Levene, and Mann-Whitney test. As a result, there was no significant difference in the crystal size and the degree of the crystallinity of both samples. The surface morphology of all samples were coated with hydroxyapatite after immersing in the SBF solution. Both AC formulations with and without SCPC have bioactivity as the bone substitute materials. Combining AC with SCPC50 is a promising method to improve the bioactivity and mechanical strength of calcium phosphate bone cement.
Effect of Long-Term Aging on the Behavior of Batu Pahat Soft Clay-Modified Asphalt Mixture
Authors: Musbah Allam Musbah Al , Ali Ahmed Suliman B. , Albeddal Ali Mohamed , Musbah Musbah Guma , Ali Hassan M. Hassan
Published: August 2022

Aging in the field is significantly influenced by the initial voids in the asphalt mixture, the intensification of the asphalt mixture under traffic, and the amount of heat applied to the mixture during production. Hence, this research is used to evaluate the effect of long-term aging on the behavior of soft clay-modified asphalt mixture. This study aims to evaluate the usage of soft clay powder, as a newly introduced material in asphalt mixture. Indirect tensile strength, indirect resilient modulus, and dynamic creep tests were conducted to determine and evaluate the performance of samples mixed using the Superpave system. The results obtained were perceived to be successful. As for the indirect tensile strength, the addition of batu pahat soft clay contributes to increasing the indirect tensile strength, especially when it was observed by using 4%, which gave better results than other soft clay percentages. In the resilient modulus test, Batu Pahat soft clay particles improved the fatigue and rutting resistance by 10.04%. While; in the dynamic creep test, the 4% soft clay value gave the best performance of evaluation works when it was conducted in a long-term aging process with the value of 0.14mm. More importantly, the evaluation of aging conditions noted that soft clay could resist and delay aging, promoting pavement durability. Also, this study was conducted to determine the most suitable and optimum patu pahat soft clay particles in the asphalt mixture and expectant to produce a new road material and to contribute toward producing cheap and effective asphalt mixtures for road construction
Communication Success and Speaking Valve Use in Intensive Care Patients Receiving Mechanical Ventilation
Authors: Sutt Anna-Liisa , Cornwell Petrea L. , Hay Karen , Fraser John F. , Rose Louise
Published: September 2022

Background

Communication with patients receiving mechanical ventilation in an intensive care unit can be challenging. Once a patient is tracheostomized, a speaking valve may enable restoration of verbal communication. To date, no data are available on the effect of speaking valves on communication success in intensive care units.

Objective

The aim of this prospective cohort study was to measure communication success before and during speaking valve use for intensive care patients being weaned from mechanical ventilation, from both the nurses’ and the patients’ perspectives.

Methods

In a prospective cohort study, consecutive eligible patients and their nurses were asked to complete newly developed questionnaires on communication success before and while patients used a speaking valve (6 questions for patients, 5 questions for nurses, answers on a 10-point scale with 10 the best score). The Wilcoxon signed rank test was used to analyze score differences.

Results

For all questionnaire items, both patients (n = 25) and nursing staff (n = 52) reported significantly higher communication success during speaking valve use. Nurses understood moderately well that their patients were in pain (median [IQR], 5.8 [4.7-7.4]) even before speaking valve use. Most patients found it challenging to say something quickly even while using a speaking valve (6.9 [5.7-10.0]). Overall, speaking valve use markedly increased communication success.

Conclusion

A speaking valve should be considered for patients with a tracheostomy as soon as possible to improve their communication success.
COMPARISON OF THE CLINICAL AND LABORATORY FEATURES OF COVID AND INFLUENZA IN CHILDREN
Authors: Pata Davide , Buonsenso Danilo , Valentini Piero
Published: August 2022

Background and Objectives. Coronavirus disease 2019 (COVID-19) is caused by SARS-CoV-2 and has a clinical presentation ranging from asymptomatic course to flu-like syndrome up to respiratory failure. Seasonal Influenza, due by the influenza viruses and very common in children, can cause symptoms similar to COVID-19. In order to identify clinical and laboratory characteristics that allow health-care workers to differentiate COVID-19 from Influenza, we performed a systematic review of the existing literature in the pediatric age. Methods.  The research was done via PubMed for articles published from March 2020 to October 2021, combining the MeSH words "COVID-19" and "Influenza" and "Children" and considering the suggestions of PRISMA Group.
Results. The most frequently described symptoms were fever and cough in both groups. In most studies, high fever, cough, nasal congestion or rhinorrhea, vomiting and muscle pain were detected more frequently in the Influenza group. Regarding the value of laboratory tests, the results were mixed. Almost all studies reported significantly lower levels of C-reactive protein and procalcitonin in the COVID-19 group than in the Influenza group. In most manuscripts, COVID-19 had a milder course than Influenza.
Conclusions. There are no symptoms characteristic of a single infectious agent, with flu-like disorders being the most common. In addition, laboratory tests do not help in the differential diagnosis but show a limited inflammatory response in COVID-19. This could explain the fewer complications compared to adulthood, with a less severe clinical course.
Keywords: COVID-19; Influenza; children
Paper microfluidic device and spectrophotometry methods for colorimetric detection of phenylephrine hydrochloride in pure and pharmaceutical preparations
Authors: Abdulsattar Jwan O. , Hadi Hind
Published: August 2022

ABSTRACT. Two easy-to-use, rapid, and inexpensive colorimetric-based assays for the detection of active constituent in nasal decongestant phenylephrine hydrochloride (PHP), in solution and their respective pharmaceutical preparations were reported. The assay principle depends on the diazotized sulfadimidine (DSDM) coupling with PHP active pharmaceutical compound under alkaline conditions to produce a colored azo-dye product. A UV/VIS spectrophotometry method was utilized to monitor the color absorbance change at 460 nm, with a linear calibration graph in the concentration range of 1-20 mg L-1 and a limit of detection of 0.22 mg L-1 and limit of quantification of 0.72 mg L-1. A comparison was done using a paper-based microfluidic analytical device (µPADs) and color intensity change was measured using a Samsung note 9 camera to capture digital images and Image J software to analyze the color intensity development. A linear trend was observed above approximately 10 mg L-1. Thus, paper-based microfluidic analytical devices (µPADs) can be used as an alternative platform to conventional methods to perform a semi-quantitative PHP drug analysis. The proposed method was applied for the determination of PHP in commercial pharmaceutical preparations.

 

KEY WORDS: Phenylephrine hydrochloride, Spectrophotometry, Paper-based microfluidic analytical devices (µPADs), Pharmaceutical preparations, Colorimetric detection

 

Bull. Chem. Soc. Ethiop. 2022, 36(4), 727-736.                                                            

DOI: https://dx.doi.org/10.4314/bcse.v36i4.1
Synthesis and characterization of benzil crown cyclic Schiff base ligand and its metal complexes
Authors: Ibrahim Alsalihi Iman , F. Al-khafaji Yahya , S. Al-fahdawi Aeed , M.  Atiyah Eman
Published: August 2022

ABSTRACT. The reaction between benzil and hexamethylenediamine formed a new ligand [L], [(1Z,3Z)-2,3-diphenyl-5,6,7,8,9,10-hexahydro-1,4-diazecine], of the type [N2], was synthesized by the condensation reaction through Schiff base reaction between benzil and hexamethylenediamine. The new Schiff base ligand reacts with Mnп, Niп and Coп metal ions to give the complexes with the general formula: [M(L)Cl2]. The elemental investigations have been used to analyze the ligand and its complexes by CHN, FT-IR, UV-Vis, TLC, mass spectrum, melting point with the study of biological activity to the formed compounds. From the data obtained, the proposed molecular structure adopts square planar structure about the metal ions. The study reveals the formation of a new ligand type [N2] and it's metal ion complexes with square planar structures metal:ligand ratio of 1:1, which can be employed in a variety of fields such as medicine and industry.  

 

KEY WORDS: Benzil, Hexamethylenediamine, Metal complexes, Square planar structure

 

Bull. Chem. Soc. Ethiop. 2022, 36(4), 791-799.                                                               

DOI: https://dx.doi.org/10.4314/bcse.v36i4.6
Inventaire des communautés lombriciennes de la région de Mbanza-Ngungu dans la province de Kongo-central (RD Congo)
Authors: Milau Empwal Fils , Aloni Komanda Jules
Published: August 2022

Les lombriciens jouent un rôle clé dans le fonctionnement des sols. Ils décomposent la litière et l’incorporent au sol, ils construisent et maintiennent la structure du sol en creusant des galeries et en modifiant l’agrégation du sol. Ils ont ainsi une implication intéressante dans la fertilité et le cycle des nutriments du sol. Cette étude a été menée à Mbanza-Ngungu dans la province de Kongo-central en République Démocratique du Congo (RDC). L’objectif a été d’inventorier, d’identifier et d’analyser la diversité lombricienne des sols des écosystèmes de Mbanza-Ngungu. Des collectes ont été réalisées de 2017 à 2019. Neuf espèces appartenant à deux familles ont été identifiées. Il s’agit de la famille Acanthodrilidae avec huit espèces : Benhamia itoliensis, Benhamia rosea, Dichogaster wenkei, D. tenuiseta, D. toroensis, D. savanicola, D. austeni et D. congica. Une seule espèce, Hyperiodrilus africanus a représenté la famille Eudrilidae. Les espèces D. austeni et Hyperiodrilus africanus ont été régulièrement récoltées dans tous les biotopes étudiés. La richesse spécifique et la diversité des insectes diminuent de la galerie à la formation herbeuse.

Earthworms play a key role in soil functioning. They break down litter and incorporate it into the soil, they build and maintain soil structure by digging galleries and changing soil aggregation. They thus have an interesting implication in the fertility and the cycle of soil nutrients. This study has been conducted at Mbanza-Ngungu in Kongo-Central Province in the Democratic Republic of Congo (DRC). The main purpose of this study was to inventory, identify and analyze Mbanza-Ngungu ecosystems earthworm diversity of the soils. Data collects has been achieved from 2017 to 2019. Nine species belonging to two families have been identified, such as Acanthodrilidae family with eight species: Benhamia itoliensis, Benhamia rosea, Dichogaster wenkei, D. tenuiseta, D. toroensis, D. savanicola, D. austeni and D. congica. Among them, only one species, Hyperiodrilus africanus, which has represented the family of Eudrilidae. The species D. austeni and Hyperiodrilus africanus have been found out regularly through the biotope on which was based our study. The specific abundance and the insects diversity are decreasing from gallery to grassland formation.
Digestibilité in vitro des ressources utilisées dans l’alimentation des ruminants en zone semi-aride du Cameroun
Authors: Blama Y. , Ziebe R. , Zoli Pagnah A.
Published: August 2022

L’objectif de cette étude était de déterminer la digestibilité des ressources alimentaires utilisées dans l’alimentation des ruminants en zone semi-aride du Cameroun. Ces ressources alimentaires ont été collectées dans les élevages de bovin puis ramenées au laboratoire. Après séchage à l’étuve, elles ont été broyées, tamisées puis conservées dans des bocaux hermétiquement fermés. Chaque substrat ainsi préparé a été soumis à l’évaluation de la digestibilité in vitro. Après 24 heures d’incubation, les sons de maïs et de sorgho ont produit plus de gaz (p ˂ 0,05) avec respectivement 250,20 ± 10,48 ml/gMS et 245,26 ± 2,83 ml/gMS par rapport aux autres substrats. Le son de maïs présente un taux de digestibilité de la matière organique le plus élevé de 62,57%. Il est suivi des fanes de niébé et d’arachide avec respectivement des taux de digestibilité de 61,38% et 61,16%. La masse microbienne produite après 24 heures d’incubation, donne un classement des substrats autre que la teneur en énergie métabolisable et la production des acides gras volatils. Après le son de sorgho, le son de riz a été le deuxième substrat en termes de masse microbienne produite avec respectivement 312,57 mg et 258,57 mg. Ces données mises à la disposition des éleveurs peuvent faciliter l’utilisation rationnelle des ressources alimentaires, ce qui pourrait améliorer la productivité des ruminants en zone semi-aride du Cameroun.

The objective of this study was to determine the digestibility of the food resources used in the ruminants feeding in the semi-arid zone of Cameroon. The food resources were collected from cattle farms and then taken to the laboratory. After drying in the oven, these resources were crushed, sieved and then stored in tightly closed jars. Each substrate prepared was subjected to the In vitro digestibility evaluation. After 24 hours of incubation, the maize and sorghum bran produced more gas (p ˂ 0.05) with respectively 250.20 ± 10.48 ml / gDM and 245.26 ± 2.83 ml/gDM compared to other substrates. With regard to organic matter, corn bran was the most digestible substrate with 62.57%, followed by cowpea and peanut fades with 61.38% and 61.16% respectively. The classification of substrates obtained from the microbial mass produced after 24 hours of incubation differs from that obtained from the metabolizable energy. After the sorghum bran, rice bran is the second substrate in terms of microbial mass produced with 312.57 mg and 258.57 mg respectively. Access to these data can facilitate the rational use of locally available food resources. This could improve the productivity of ruminants in the semi-arid zone of Cameroon.
A seven-level cascaded multilevel inverter based on simplified SVPWM method
Authors: Matale Nishant P. , Thakre Mohan P. , Borse Payal S.
Published: August 2022

The multilevel converters are extremely widespread alternatives within megawatt power level as well as medium voltage level applications due to their excellent execution than the typical two-level converters. The widely applied control strategies aimed at inverters are Sine Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM) strategies. In between these two PWM methods, the SVPWM strategy has excellent execution as compared to the SPWM strategy as a result of improved DC link voltage use as well as a decrease in Total Harmonic Distortion (THD) in output voltages. A traditional SVPWM strategy owns numerous weaknesses like computational complications in terms of identification of the reference voltage vector position, to identify sector, triangle and also it requires large memory for storing look up tables used for switching vectors. This paper presents, an innovative modified SVPWM strategy aimed at Cascaded H-Bridge Multilevel Inverter (CHBMLI). The novel modified SVPWM strategy has overwhelm the downsides of traditional SVPWM strategy. A seven-level CHBMLI is used for the implementation of this simplified SVPWM method to assess performance and as well to made comparison with the SPWM strategy. A MATLAB software is used for the simulation.
5-level torque-hysteresis controller for DTC based IM drive
Authors: Borse Payal S. , Thakre Mohan P. , Matale Nishant P.
Published: August 2022

In the recent trade demand, the AC machines and drives are extensively utilized. Normally, the AC drives exploit with high efficacy as well as high performance. Among other things, one of the best control strategies is Direct torque control (DTC). For this article, the induction motor drive is projected very simple amended DTC scheme in accordance with the hysteresis controller. By the reason of its modest assembly & effective execution, DTC is used for AC as well as DC drive as associated to other monitoring structures. The presence of high ripple content in output torque for DTC scheme is only an obstacle. This article approaches extenuation of the ripples in torque by varying the predictable 5-level torque hysteresis controller used in DTC. The expansion of distinctive switching approach has been generated for chosen voltage vector. On the basis of ripple content simulation outcomes fulfilled in MATLAB/SIMULINK for hysteresis torque controller to minimized the ripples.
Global maximum power tracking of PV system under partial shading
Authors: Annam Venkata Sravanthi , Kandipati Rajani , Rao Alla Rama Koteswara
Published: August 2022

The increased usage of electrical energy in the recent times leads to a greater demand. It invites large development in the production of electrical energy from renewable energy sources. It involves more evolving technologies. Out of all energy extraction from solar would be abundant. Photovoltaic (PV) are one such components helps in deriving large amounts of energy, this has become more easiest method due to its economic liabilities and the world has aimed its interest in developing the PV technology, which gives clean energy. This paper objective is to implement various Maximum Power Point Tracking (MPPT) algorithms, mainly Cuckoo Search Algorithm, fuzzy logic control (FLC) and conventional perturb and observe (P&O), incremental conductance (INC) on solar PV systems. These controlled MPPT algorithms helps in driving DC-DC boost converter, which helps to obtain maximum output from the PV Panels/cells/modules/Arrays. The obtained results are compared with each other under several operating conditions. The operating conditions include change in irradiance, change in temperature dynamically, and partial shading on PV panels. The implemented MPPT algorithms require only the PV array voltage and current to control DC-DC converter, which makes them economically feasible and attractive. From the results, it can be observed that Cuckoo search algorithm gives better results under partial shading situations.
Artificial sweeteners: regulation in Brazil, technological implications in food production and health
Authors:   Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil., Diniz Juliana Alves de , Pedreira Maisa Estefânia de Oliveira ,   Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil., Moore Susan R. ,   Independent scholar, UK, United Kingdom., Dala-Paula Bruno Martins ,   Federal University of Alfenas - UNIFAL-MG, Alfenas, MG, Brazil.
Published: September 2022

Sweeteners provide a sweet taste to foods and are used to replace sucrose and reduce caloric value. Acesulfame potassium, aspartame, sodium cyclamate, saccharin, sucralose and neotame are the artificial sweeteners regulated in Brazil by the Brazilian Health Regulatory Agency (ANVISA). The consumption of these additives has become controversial due to recent scientific evidence questioning their safety and outcomes regarding weight loss, dysbiosis of the intestinal microbiota, insulin resistance, diabetes and cancer. Even today, little is known about the long-term consequences of their consumption. Therefore, this study aimed to carry out a review of artificial sweeteners regulated in Brazil, contextualizing their regulatory framework, the technological implications regarding their use and the effects on health. Considering the now controversial outcomes regarding the consumption of many artificial sweeteners, and the long period in which levels of acceptable daily intake have been in place, it is suggested their consumption should now not be encouraged, being restricted to population groups that have a risk-based physiological or metabolic need to replace sucrose. Also, for these cases, it would be important to differentiate between foods containing different sweeteners (or tabletop sweeteners), to alleviate possible chronic health effects. New studies with more robust and consistent methodologies are required to support the safety assessment reviews of each artificial sweetener.
THE RELATIONSHIP BETWEEN LEARNING ACTIVITIES AND LEARNING MEDIA WITH STUDENTS' ECONOMIC LEARNING OUTCOMES
Authors: Hersan Hersan , Ogara Dwi Okaviani , Jariah Tesi Komariyatun
Published: September 2022

This study aims to determine: (1) the relationship between learning activities and economic learning outcomes for students of X Accounting Class at SMK HMPTI Banjar Agung, (2) the relationship between learning media and economic learning outcomes for students in X Accounting class at SMK HMPTI Banjar Agung, (3) the relationship between between learning activities and learning media with economic learning outcomes for students of class X Accounting at SMK HMPTI Banjar Agung. This research is an ex-post facto research. The population in this study were 102 students of class X SMK HMPTI Banjar Agung. Sampling was done using cluster random sampling technique. The results based on the use of cluster random sampling technique obtained class X Accounting as a sample of 40 students. Data were collected using the methods of observation, interviews, documentation, and questionnaires, while the analysis used Product Moment Correlation. The results show that (1) there is a close relationship between learning activities and economic learning outcomes for students of class X Accounting at SMK HMPTI Banjar Agung, with the calculated value obtained thit = 5.3824 and tdaf = 2.02 the difference is 3.3624, thus thit tdaf, (2) there is a close relationship between learning media and economics learning outcomes for students of class X Accounting at SMK HMPTI Banjar Agung, with the calculated value obtained thit = 4.2015 and tdaf = 2.02 the difference is 2.1815, thus hit tdaf, (3) there is a close relationship between learning activities and learning media with economic learning outcomes for students of class X Accounting at SMK HMPTI Banjar Agung, with the calculated value obtained fhit = 3.4125 and fdaf = 3.26 with a difference of 0.1525 test criteria due to thit fdaf. From these calculations, it can be concluded that there is a close relationship between learning activities and learning media with economic learning outcomes for students of class X Accounting at SMK HMPTI Banjar Agung for the 2017/2018 academic year.
Proposition of Web Services Discovery and Composition Approach: Application in E-learning Platform
Authors:   IPI Laboratory, Sidi Mohamed Ben Abdellah University –Fez, Morocoo, Halim Mohamed , Adadi Nouha , Berrada Mohammed , Tahiri Abdelmajid , Chenouni Driss
Published: September 2022

The rapid penetration of Web technologies and strong economic pressure have led to an irresistible proliferation of Web services. In this paper, we are interested in the discovery and composition of Web services. In this sense, we propose a conceptual architecture and technical tools to carry out our approach. The originality of the proposed solution lies in the use of mixed tools ranging from multi-agents systems to Business Process Management (BPM) techniques, including Matchmaking algorithms and semantic models.
Una exploración sobre la educación y prácticas inclusivas y equitativas del profesorado en la Universidad Autónoma de Tamaulipas.
Authors: Espinosa Barajas Jeny Haideé , Lladó Lárraga Dora María , Aguirre Ramírez Héctor Gabino
Published: September 2022

La investigación tuvo como objetivo identificar el conocimiento y práctica de la educación inclusiva durante la pandemia por parte del profesorado de la Universidad Autónoma de Tamaulipas para efectos de obtener elementos a incluir en un programa de formación docente basado en los principios de una escuela inclusiva, la cual integró un enfoque cuantitativo, no experimental transversal con alcance descriptivo. Participaron 413 profesores y la muestra fue no probabilista. Los resultados reflejaron que el profesorado diversifica formas de representación de información y contenidos, facilita la expresión e interés del conocimiento, pero desconoce elementos inclusivos de comunicación y colaboración como Lengua de Señas Mexicana, sistema Braille y tecnología inclusiva. En el futuro, seguirá siendo un desafío avanzar hacia una educación inclusiva.
Características del proceso de comunicación entre docentes y estudiantes de la Universidad Pedagógica del Estado de Sinaloa (UPES) en tiempo de pandemia. La perspectiva del estudiantado.
Authors: Zatarain Avendaño Virginia Mirella , Pereira Hernández María Luisa
Published: September 2022

El presente articulo presenta los resultados obtenidos en la investigación titulada “El proceso de comunicación virtual: Una visión desde el estudiantado de pedagogía de UPES” en donde se describe el proceso de comunicación docente-estudiante de la Licenciatura de Pedagogía de la UPES llevado a cabo en tiempo de pandemia. La metodología utilizada fue cualitativa usando el método de estudio de caso y la entrevista online aplicada a 72 estudiantes para la recolección de los datos. Las conclusiones destacan el actuar del docente, considerando sus diálogos con el estudiante, y la importancia de la práctica humanista digital a partir de la empatía y la aceptación incondicional para fortalecer la acción prosumidora.
El desempeño de los profesores durante la pandemia desde la percepción de los estudiantes de posgrado.
Authors: Peinado Camacho José de Jesús , Cruz Guerra Constantina , Montoy Hernández Luis Daniel
Published: September 2022

El objetivo de la presente investigación fue determinar el desempeño de los profesores durante la pandemia de COVID-19 desde la percepción de los estudiantes de posgrado. La metodología fue cualitativa con enfoque exploratorio y descriptivo. Se empleo el método empírico-analítico sustentado en la teoría fundamentada. Como técnica de investigación se utilizó el estudio de caso. La muestra fue no probabilística. Se analizaron las reflexiones y experiencias de estudiantes de maestría y doctorado que cursaron sus asignaturas a distancia en los años 2020 y 2021. Los hallazgos demostraron que el desafío académico de los profesores de posgrado durante la pandemia no fue solamente enseñar a distancia, sino también hacer que los estudiantes aprendieran desarrollando su aprendizaje autorregulado.
La elección de carrera de los estudiantes de nuevo ingreso a la Licenciatura en Ciencias Ambientales.
Authors: García Sánchez Silberio , Juárez Agis Alejandro , Olivier Salome Branly , Zeferino Torres Jacqueline , Rivas González Mayra
Published: September 2022

El objetivo de la investigación fue identificar los factores que influyen en la elección de carrera de los estudiantes de nuevo ingreso a la Licenciatura en Ciencias Ambientales de la Universidad Autónoma de Guerrero. El método de estudio fue mixto y transversal. Los resultados muestran, que la mayoría de los estudiantes querían estudiar otras carreras diferentes a la Licenciatura de Ciencias Ambientales. Los factores predominantes son: “gusto personal”, “por influencia familiar”, “por empleo”, “por orientación vocacional”, y por “vocación a estudiar”. Como conclusión, en general se evidencia que no existe en los jóvenes el análisis o reflexión sobre la pertinencia de su decisión para estudiar su carrera profesional.
El debate como estrategia de aprendizaje en el contexto universitario: guía de implementación a partir de una revisión sistemática.
Authors: Flores Mejía Jesús Guillermo , Santiago Marino Yareli Jacqueline , Velázquez Gatica Belén
Published: September 2022

El objetivo del trabajo fue realizar una revisión sistemática de la literatura sobre el debate como estrategia de aprendizaje. Para cumplir este objetivo, se hizo una búsqueda en las bases Redalyc, Scielo, Dialnet, Latindex, Conricyt, Science Direct y Google Académico y se admitieron 21 trabajos para el análisis. Como conclusión principal, se obtuvo que el debate es una estrategia de aprendizaje que aun despierta interés en la literatura como una de las metodologías activas con mayores beneficios para desarrollar habilidades, conocimientos y actitudes en los estudiantes. Por lo tanto, el análisis de documentos sobre las experiencias del debate es una herramienta valiosa para ofrecer recomendaciones sobre las diferentes etapas del debate y los aspectos a considerarse para su implementación exitosa.
Desafíos laborales para docentes de preescolar en México: una aproximación.
Authors: Altamirano Abad José Antonio , Martínez Chapa Oshiel
Published: September 2022

El presente trabajo tiene como propósito fundamental analizar las condiciones laborales de los docentes de preescolar. A partir del 2010, los docentes de diversos niveles, en su mayoría mujeres, han enfrentado diversas condiciones laborales que les plantean desafíos permanentes como presentar examen para el servicio docente público, competir por una plaza de trabajo con otros profesionistas afines o no tan afines, además de recibir capacitación y actualización constantes. Con estas acciones se espera una significativa mejora en la calidad de la educación. Se concluye en que se requiere de mejorar las condiciones de este sector de profesionales de la educación si se pretende alcanzar la excelencia educativa en beneficio de los estudiantes y de la sociedad.
El lenguaje como una herramienta psicológica para el aprendizaje a partir del trabajo colaborativo en la educación presencial y a distancia dentro de la Zona de Desarrollo Próximo.
Authors: Guerra García Javier
Published: September 2022

La teoría sociocultural ha generado aportes trascendentales al constructivismo educativo; la Zona de Desarrollo Próximo es uno de ellos, debido a sus características teóricas y posibilidades de implementación bajo modelos de enseñanza presenciales y a distancia, que pretenden promover un mayor compromiso del alumno en la construcción de su aprendizaje asociado al desarrollo de la interacción y colaboración, por lo que en este artículo se presenta un análisis realizado desde la perspectiva del lenguaje como herramienta psicológica del estudiante para llevar a cabo la significación y apropiación del conocimiento sociocultural vigente, a través de la interacción social con sus pares, condición necesaria para que la Zona de Desarrollo Próximo pueda establecerse en los espacios educativos.
Capacitación en educación ambiental para el desarrollo sostenible dirigida a los guías del Movimiento de Pioneros Exploradores.
Authors: Rodríguez López Osvel , Águila Moreno Yasel , Moré Estupiñán Mavel
Published: September 2022

El presente artículo atiende una problemática relacionada con la necesaria capacitación a los guías del Movimiento de Pioneros Exploradores del sector rural en el municipio Manicaragua, para la incorporación de la educación ambiental para el desarrollo sostenible a su labor educativa. Su objetivo principal es socializar los fundamentos didácticos de un sistema de acciones de capacitación diseñado para resolver las carencias existentes en este sentido. Se utilizan diferentes métodos científicos para profundizar en la teoría, diagnosticar la práctica pedagógica, determinar regularidades, y elaborar una propuesta que se convierte en una modesta contribución al cumplimiento de la Agenda 2030 y sus Objetivos de Desarrollo Sostenible.
El slowpitch en México: un acercamiento a la práctica deportiva a través del género de las mujeres sonorenses.
Authors: Hoyos Ruiz Graciela , García Bojórquez Socorro , Cuevas Hoyos Cristina , Salas Hoyos Andrea Elisa , Chávez Valenzuela María Elena , Valenzuela Robles Edgardo
Published: September 2022

El slowpitch es una modalidad del sóftbol, que a su vez, es una derivación del béisbol. Este estudio explora el fenómeno del slowpitch que practican las mujeres en Sonora. El objetivo es reflexionar de qué forma un deporte, históricamente practicado por hombres en Estados Unidos, impactó en las mujeres mexicanas en la segunda década del siglo XXI. Se realizó un estudio exploratorio descriptivo de tipo transversal, y para el análisis estadístico, se utilizó el software SPSS v.22 (Statistical Package for Social Sciencies). Se utilizan conceptos interdisciplinarios, desde la categoría analítica de género, para la interpretación y el análisis discursivo que arrojan las encuestas. En ese sentido, esta investigación visibiliza la participación de las mujeres sonorenses en el slowpitch.
Formación en el campo de los procesos de exclusión-inclusión social en una Licenciatura en Psicología; aprendizajes y retos.
Authors: Echeverría Echeverría Rebelín
Published: September 2022

En este trabajo se analizan los principales aprendizajes y retos que han experimentado estudiantes de Licenciatura en Psicología al cursar una asignatura centrada en las prácticas de inclusión social en diferentes ámbitos. La metodología fue el análisis de contenido de matriz semántica aplicado a 140 análisis críticos y 14 informes finales de proyectos para la inclusión. Se destacan aprendizajes ligados a la comprensión de los procesos exclusión-inclusión desde diferentes propuestas teóricas, las diversas realidades e iniciativas de acción, y reflexiones personales. Los retos principales se vinculan a la generación de espacios para promover cambios de actitud y el trabajo en red. Se discuten los resultados en términos del aporte a la formación y al impacto psicosocial en el contexto contemporáneo.
La pandemia en el desarrollo económico. Incidencia económica del sector de la construcción.
Authors: Aldaz Bombón Oscar Rodrigo , Medrano Barragán Joan Paúl , Pozo Hernández Fanny Maricela
Published: September 2022

El propósito de este artículo es determinar la incidencia económica del sector, bajo un escenario de pandemia vigente considerando información de organismos oficiales, mediante la aplicación de un modelo de regresión lineal múltiple, donde se considera el ingreso como variable dependiente, y las compras, gasto publicidad, y gasto interés como variables predictoras, para determinar cuál es el factor que principalmente influye. La ciencia y la tecnología, el sector constructor, responsable del desarrollo, la fabricación y la venta de viviendas, proyectos urbanísticos y de infraestructura vial ha experimentado un crecimiento económico significativo. Se definió como población a empresas que pertenecen al sector de la construcción registradas en la Superintendencia de Compañías, Valores y Seguros en la Provincia de Santo Domingo de los Tsáchilas.
Turismo y desarrollo en la comuna Colorados del BÚA de la provincia de Santo Domingo de los Tsáchilas: diseño para la implementación de una ruta turística guiada para el fortalecimiento económico.
Authors: Franco Pérez Aníbal Fernando , Tinitana Villalta Darwyn Agustín , Freire Muñoz Diego Armando
Published: September 2022

El trabajo actual se ha realizado con el objetivo de investigar el impacto de las rutas turísticas en la comunidad. El campo a investigar no tiene rutas turísticas en uso, por lo que una vez realizado el proyecto se puede habilitar una ruta turística donde los huéspedes puedan disfrutar de los encantos de los Colorados del Búa, y para desarrollar actividades extremas de deportes de aventura de forma segura tal como es el ciclismo, y ver la flora y fauna a sus alrededores.