bluuebunny/crossref_metadata_2025 huggingface dataset:
Effective Classroom Practices for Unlocking Students’ Potentials in Mathematics
Authors: Mkenda Theresia B
Published: April 2022

Despite several measures that have been employed by different stakeholders to improve the teaching and learning of mathematics subjects in Tanzania, the students’ pass rate in form four national examinations has been less than 25% for more than ten (10) consecutive years now. This persistent massive failure in mathematics can be highly associated with teaching strategies that are used by teachers when delivering their lessons, students’ attitudes toward the subject and the general school/learning environments that surround the students. This paper analyzes the most effective strategies that can be employed by teachers and other stakeholders to make mathematics lessons more meaningful and help students develop strong positive attitudes toward the subject, hence unlocking their potential in mathematics. These strategies were first compiled from a scoping review of previous scholarly works and then shared with mathematics teachers and students in selected secondary schools in the Kilimanjaro region of Tanzania to assess the practicability and relevance of the proposed strategies in daily teaching and learning processes. Additionally, the suggested strategies were used by Mwenge Catholic University students who participated in the volunteering programme of teaching mathematics subject in the selected schools during the Teaching Support Programme. Teachers’ feedback, students’ feedback and the lessons learned from the math Teaching Support Programme helped the researchers confirm the effectiveness of the proposed strategies and suggest promising interventions that can help to unlock students’ potentials in mathematics.
Predictive Analysis of COVID-19 Pandemic in India Based on SIR-F Model
Authors: C. Satyam S. , P. Gopinath M. , M. Jenil S. , P. Shashank
Published: April 2022

Impact of COVID-19 has been devastating worldwide, it has disrupted lives of people, economy has fallen and millions of people have lost their jobs. Second peak of COVID-19 is making it even worse for many developing countries. In India, the second peak is reaching nearly 4 times the cases that were reported during the first peak, thus making it a challenge for the government to plan for the future without affecting the economy further. According to WHO, millions of enterprises are at existential threat, nearly half of the global workforce is at risk of losing their jobs and the entire food chain has been disrupted. In order to provide some assistance to the situation, this study aims to use the SIR-F Model, which is a variation of the SIR model. W. O. Kermack and A. G. McKendrick in 1927, proposed the model in which they classified a fixed population into three compartments: S(t), susceptible; I(t), Infected; R(t), Recovered. We have used the SIR-F model which differentiates between Recovered (meaning people infected and later recovered and thus now immune) and Fatality. We have simulated two scenarios including one in which we study the impact of medicine on future cases and also inspected various parameters which shed light on reasons behind increasing and decreasing the number of covid cases in India. In the future, this work can be extended further to develop a completely new model to consider those cases in which people have recovered but are still at a risk of reinfection.
Anxiety and depression symptoms, albuminuria and risk of acute myocardial infarction in the Norwegian HUNT cohort study
Authors: Gustad Lise Tuset , Myklebust Tor Åge , Bjerkeset Ottar , Williams Lana , Laugsand Lars Erik , Dalen Håvard , Berk Michael , Romundstad Solfrid
Published: April 2022

Background: Studies suggest increased risk for an outcome in people with joint exposures that share common causal pathways. The objective of this study was to determine the risk of incident acute myocardial infarction (AMI) following exposure to both albuminuria and/or anxiety and depression symptoms.Methods: Participants who provided urine samples to the HUNT2 (1995–97) or HUNT3 (2007–2009) surveys were followed until the end of 2016. Albuminuria was measured by Albumin Creatine Ratio (ACR) and participants self-reported mood and anxiety symptoms on the Hospital Anxiety and Depression scale. We used Cox regression to estimate hazard ratios (HRs) for first incident AMI considering interaction between exposures and additive models to calculate the proportion of AMI that were attributable to the synergy of both exposures, adjusted for the Framingham variables.Results: 11 014 participants free of previous AMI were eligible for participation, with 1 234 incident AMIs occurred during a mean 13.7 years of follow-up. For participants who had a healthier CVD risk profile, the HR for AMI of having both albuminuria (3-30 mg/mmol) and depression (≥8) was 2.62 (95% 1.12–6.05) compared with a HR 1.34 (95% CI 1.04–1.74) with raised ACR only (Likelihood Ratio-test 0.03). Adding anxiety (≥8) to albuminuria (3-30) tripled the risk (HR 3.32 95% CI 1.43–7.17). The additive models suggest that these risks are not higher than expected based on each risk factor alone. Conclusions: This study indicate that the risk of AMI in persons with elevated albuminuria but with an otherwise healthy CVD profile might be amplified by anxiety and depression symptoms. The increased risk with joint risk factors is not higher than expected based on each risk factor alone, which indicate that the risk factors do not share causal pathways.
Bioactivities of Chalcones
Authors: Dimmock J.R. , Elias D.W. , Beazely M.A. , Kandepu N.M.
Published: April 2022

This review outlines the different bioactivities of a variety of chalcones. The cytotoxic, anticancer, chemopreventative and mutagenic properties of a number of chalcones are described followed by an account of various of these unsaturated ketones as antimicrobial agents. The antiviral, antiprotozoal and insecticidal activities of a variety of chalcones are reviewed as well as the enzyme-inhibitory properties and miscellaneous activities of some of these molecules.
The Moderation Effect of Affective Commitment on the Relationship between Job Stress and Presenteeism among Obstetric Healthcare Workers during COVID-19 Pandemic
Authors: El-Kurdy Rania , El-Nemer Amina , Yousef Ahmad , Elsaidy Waheed , Hamdan-Mansour Ayman
Published: April 2022

Background:

Presenteeism is a significant factor that affects the quality of care provided by obstetric healthcare workers, including nurses, that needs further investigation of its connection to job stress and affective commitment during COVID-19 pandemic.

Aim:

The aim of this study is to examine the moderation effect of affective commitment on the relationship between job stress and presenteeism among obstetric healthcare workers during COVID-19 pandemic.

Methods:

Two hundred and seven Egyptian obstetric healthcare workers participated in a cross-sectional, descriptive study using a web-based questionnaire to collect data on sociodemographic, presenteeism, challenge stress, hindrance stress, and affective commitment.

Results:

More than 50% of obstetric healthcare workers had a moderate level of presenteeism, while job stress and affective commitment were at moderate to high levels. Affective commitment had a significant moderating effect on the relationship between job stress and presenteeism (p< .001). Challenges and affective commitment had a positive effect on presenteeism, while hindrances had a negative effect.

Conclusion:

Obstetric healthcare workers need to recognize the connection between job stress and presenteeism and the buffering role of affective commitment.

Implications for Nursing Practice:

Nurses need to recognize the effect of pandemic COVID-19 on job stress and presenteeism among obstetrics nurses and healthcare workers. Developing innovative protocols would enable them to improve their functionality and productivity at work.
Poly (Lactic Acid) (PLA)/Recycled Styrene Butadiene Rubber (rSBR) Composites
Authors:   Department of Chemical Engineering, Université Laval, Quebec, QC, Canada, Cusson Étienne , Mougeot Jean-Christophe ,   Laboratoire de Mécanique Gabriel Lamé, Université de Tours, INSA CVL, Université d’Orléans, 29 rue des Martyrs, 37300, Joué les Tours, France, Maho Mélanie ,   Laboratoire de Mécanique Gabriel Lamé, Université de Tours, INSA CVL, Université d’Orléans, 29 rue des Martyrs, 37300, Joué les Tours, France, Lacroix Florian ,   Laboratoire de Mécanique Gabriel Lamé, Université de Tours, INSA CVL, Université d’Orléans, 29 rue des Martyrs, 37300, Joué les Tours, France, Fazli Ali ,   Department of Chemical Engineering, Université Laval, Quebec, QC, Canada, Rodrigue Denis ,   Department of Chemical Engineering, Université Laval, Quebec, QC, Canada
Published: April 2022

Recycled styrene butadiene rubber (rSBR) from waste car tires was used as a filler in poly(lactic) acid (PLA) to modify its properties. The compounds were prepared via twin-screw extrusion and molded by injection with different rSBR contents (0 to 25% wt.). Additionally, recycled rubber particle size was controlled between 125 and 1000 μm to determine the effect of this parameter. From the samples produced, a series of morphological, physical and mechanical characterizations were performed. As expected, rSBR addition decreased the PLA stiffness. Up to 5% rSBR, the flexural and elastic moduli were unchanged, but the tensile strength, elongation at break and impact toughness were decreased. The highest tensile strength, elongation at break and impact toughness were achieved for PLA/rSBR blends filled with small rubber particles (125-250 μm). According to the morphological analysis, this behavior was associated to better interfacial interactions between smaller rSBR particles (higher specific surface area) and PLA resulting in a more uniform filler distribution and better stress transfer from PLA to rSBR. Finally, to complete the mechanical properties of the materials, fatigue tests were carried out on different blends and the results were related to instrumented indentation to get some more local information.
Reaction Kinetics and Characterization of Slag-Based, High Strength, “Just-Add-Water” Type (One-Part) Alkali-Activated Binders
Authors:   School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe AZ, USA, Dakhane Akash , Neithalath Narayanan ,   School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe AZ, USA
Published: April 2022

The influence of different levels of alkalinity, expressed using M2O-to-binder ratio (n) and activator SiO2-to-M2O ratio (Ms), (M being the Na+ or K+ cation) on the reaction kinetics, compressive strength development and the reaction product formation in slag-based systems activated using alkali powders are discussed. The fundamental idea is to better understand one-part, “just-add-water” type alkali activated binders that are easy-to-use than the systems that rely on liquid activators. The difference in the behavior of the systems with changes in the cationic species (Na+ or K+) and the overall levels of alkalinity is elucidated. Heat release and its rate, and thermal analysis and Fourier Transform Infrared Spectroscopy (FTIR) are used for the characterization of the reaction and the products formed. The influence of activator alkalinity on the initial dissolution and acceleration phases is examined using isothermal calorimetry. An increase in Ms is found to result in reduced early-age and slightly increased later-age compressive strengths. The activator cationic species influences later-age strengths, with K-silicate activated mortars showing a higher strength. The strength data is related to the C-(A)-S-H gel formation. The study shows that slag-based binders can be proportioned to obtained compressive strengths in excess of 80 MPa at later ages (56 days), and up to 30 MPa within 72 hours. The optimal alkali levels based on n and Ms for both the Na- and K-based activator systems are determined.
Using the Stay Strong App for the Well-being of Indigenous Australian Prisoners: Feasibility Study
Authors: Perdacher Elke , Kavanagh David , Sheffield Jeanie , Healy Karyn , Dale Penny , Heffernan Edward
Published: April 2022

Background

The gap between mental health needs and resources for Aboriginal and Torres Strait Islander people, the Indigenous people of Australia, is most marked in the prison population. Indigenous people are overrepresented in Australian prisons. In prison, this group experiences mental disorders to a greater degree than non-Indigenous prisoners. This group has also been found to experience mental disorder at a higher rate than Indigenous people in the community. In addition to pre-existing determinants of poor mental health, these high prevalence rates may reflect poor engagement in mainstream interventions or the efficacy of available interventions. In community populations, the use of digital mental health resources may help to increase access to well-being support. However, culturally appropriate digital tools have not been available to Indigenous people in prisons. The absence of feasibility and efficacy studies of these tools needs to be addressed.

Objective

The aim of this study is to determine the feasibility of the Stay Strong app as a digital well-being and mental health tool for use by Indigenous people in prison.

Methods

Dual government agency (health and corrective services) precondition requirements of implementation were identified and resolved. This was essential given that the Stay Strong app was to be delivered by an external health agency to Indigenous prisoners. Then, acceptability at a practice level was tested using postuse qualitative interviews with clients and practitioners of the Indigenous Mental Health Intervention Program. All Indigenous Mental Health Intervention Program practitioners (10/37, 27%) and client participants who had completed their second follow-up (review of the Stay Strong app; 27/37, 73%) during the study period were invited to participate.

Results

Owing to the innovative nature of this project, identifying and resolving the precondition requirements of implementation was challenging but provided support for the implementation of the app in practice. Acceptability of the app by clients and practitioners at a practice level was demonstrated, with nine themes emerging across the interviews: satisfaction with the current Stay Strong app, supported client goal setting, increased client self-insight, improved client empowerment, cultural appropriateness, enhanced engagement, ease of use, problems with using an Android emulator, and recommendations to improve personalization.

Conclusions

The Stay Strong Custody Project is a pioneering example of digital mental health tools being implemented within Australian prisons. Using the app within high-security prison settings was found to be feasible at both strategic and practice levels. Feedback from both clients and practitioners supported the use of the app as a culturally safe digital mental health and well-being tool for Aboriginal and Torres Strait Islander people in prison.
The Effectiveness of Wearable Devices as Physical Activity Interventions for Preventing and Treating Obesity in Children and Adolescents: Systematic Review and Meta-analysis
Authors: Wang Wentao , Cheng Jing , Song Weijun , Shen Yi
Published: April 2022

Background

The prevalence of obesity in children and adolescents remains a global public health issue. Wearable devices may offer new opportunities for prevention and intervention in obesity. Previous systematic reviews have only examined the effect of the wearable device interventions on preventing and treating obesity in adults. However, no systematic review has provided an evaluation of wearable devices as physical activity interventions for preventing and treating obesity in children and adolescents.

Objective

The purpose of this review and meta-analysis was to evaluate the effectiveness of wearable devices as physical activity interventions on obesity-related anthropometric outcomes in children and adolescents.

Methods

Research articles retrieved from PubMed, EMBASE, Cochrane Library, Scopus, and EBSCO from inception to February 1, 2021, were reviewed. The search was designed to identify studies utilizing wearable devices for preventing and treating obesity in children and adolescents. The included studies were evaluated for risk of bias following the Cochrane recommendation. Meta-analyses were conducted to evaluate the effectiveness of wearable devices as physical activity interventions on body weight, body fat, BMI z-score (BMI-Z), BMI, and waist circumference. Subgroup analyses were performed to determine whether the characteristics of the interventions had an impact on the effect size.

Results

A total of 12 randomized controlled trials (3227 participants) were selected for meta-analysis. Compared with the control group, wearable device interventions had statistically significant beneficial effects on BMI (mean difference [MD] –0.23; 95% CI –0.43 to –0.03; P=.03; I2=2%), BMI-Z (MD –0.07; 95% CI –0.13 to –0.01; P=.01; I2=81%), body weight (MD –1.08; 95% CI –2.16 to –0.00; P=.05; I2=58%), and body fat (MD –0.72; 95% CI –1.19 to –0.25; P=.003; I2=5%). However, no statistically significant effect was found on waist circumference (MD 0.55; 95% CI –0.21 to 1.32; P=.16; I2=0%). The subgroup analysis showed that for participants with overweight or obesity (MD –0.75; 95% CI –1.18 to –0.31; P<.01; I2=0%), in the short-term (MD –0.62; 95% CI –1.03 to –0.21; P<.01; I2=0%), wearable-based interventions (MD –0.56; 95% CI –0.95 to –0.18; P<.01; I2=0%) generally resulted in greater intervention effect size on BMI.

Conclusions

Evidence from this meta-analysis shows that wearable devices as physical activity interventions may be useful for preventing and treating obesity in children and adolescents. Future research is needed to identify the most effective physical activity indicators of wearable devices to prevent and treat obesity in children and adolescents.
A Participatory Design Approach to Develop Visualization of Wearable Actigraphy Data for Health Care Professionals: Case Study in Qatar (Preprint)
Authors: Khowaja Kamran , Syed Wafa Waheeda , Singh Meghna , Taheri Shahrad , Chagoury Odette , Al-Thani Dena , Aupetit Michaël
Published: April 2022

BACKGROUND

Several tools have been developed for health care professionals to monitor the physical activity of their patients, but most of these tools have been considering only the needs of users in North American and European countries and applicable for only specific analytic tasks. To our knowledge, no research study has utilized the participatory design (PD) approach in the Middle East region to develop such tools, involving all the stakeholders in the product development phases, and no clear use cases have been derived from such studies that could serve future development in the field.

OBJECTIVE

This study aims to develop an interactive visualization tool (ActiVis) to support local health care professionals in monitoring the physical activity of their patients measured through wearable sensors, with the overall objective of improving the health of the Qatari population.

METHODS

We used PD and user-centered design methodologies to develop ActiVis, including persona development, brainwriting, and heuristic walkthrough as part of user evaluation workshops; and use cases, heuristic walkthrough, interface walkthrough, and survey as part of expert evaluation sessions.

RESULTS

We derived and validated 6 data analysis use cases targeted at specific health care professionals from a collaborative design workshop and an expert user study. These use cases led to improving the design of the ActiVis tool to support the monitoring of patients’ physical activity by nurses and family doctors. The ActiVis research prototype (RP) compared favorably with the Fitbit Dashboard, showing the importance of design tools specific to end users’ needs rather than relying on repurposing existing tools designed for other types of users. The use cases we derived happen to be culturally agnostic, despite our assumption that the local Muslim and Arabic culture could impact the design of such visualization tools. At last, taking a step back, we reflect on running collaborative design sessions in a multicultural environment and oil-based economy.

CONCLUSIONS

Beyond the development of the ActiVis tool, this study can serve other visualization and human–computer interaction designers in the region to prepare their design projects and encourage health care professionals to engage with designers and engineers to improve the tools they use for supporting their daily routine. The development of the ActiVis tool for nurses, and other visualization tools specific to family doctors and clinician researchers, is still ongoing and we plan to integrate them into an operational platform for health care professionals in Qatar in the near future.
Incumbents' Behavior and Strategic Interactions Among Local Governments: The Case of Indonesia
Authors: Syakir Kurnia Akhmad , Izzulhaq Syahid , J. Maulana Sandy
Published: April 2022

This paper investigates Yardstick Competition among local governments in decentralized Indonesia by distinguishing bad from good incumbent behavior. By doing so, this paper provides a more explicit connection between theoretical foundation and empirical investigation, where political incumbency is viewed based on the political economy perspective. Given that voters can compare and benchmark their incumbent's performance, an incumbent who aims for the throne twice must consider neighboring local governments' performance as the reference, leading to strategic interaction across local governments. We conduct empirical examinations using Two-regime Spatial Econometrics for panel data consisting of 99 local governments in the West, Central, and East Java Provinces from 2010 to 2017. Our empirical estimation results confirm that mimicking behavior by bad incumbents, characterized by the underperformed public sector, is evident. Bad incumbents mimic their neighbor's public spending. However, we find no evidence of Yardstick Competition by incumbents in general.
El disfrute de los derechos humanos en médicos residentes: construcción y primeras evidencias psicométricas de instrumento
Authors: Dominguez-Lara Sergio , Mota-Morales María De Lourdes , Delgado-Domínguez Carolina , Luzania-Valerio Manuel Salvador , Vázquez-Martínez Domingo
Published: April 2022

Introducción: El enfoque de la salud basado en derechos humanos (ESBDH) postula que los programas de salud pueden violentar los derechos humanos (DDHH) de las personas, y en él se considera determinante el respeto a estos para la mejora de la salud de la población, por lo que es relevante la construcción de instrumentos que permitan conocer el disfrute de los DDHH en médicos residentes.Objetivo: Construir y analizar la estructura interna de un instrumento para conocer la opinión de médicos residentes sobre el disfrute de su derecho a la educación y al trabajo digno. Método: Se construyó un instrumento con base en la definición de derecho a la educación y al trabajo digno del Pacto Internacional de Derechos Económicos, Sociales y Culturales. Se aplicó a 605 médicos residentes. Se realizó un análisis factorial a través del método de mínimos cuadrados no ponderados con rotación oblicua Promin, y posteriormente se analizó la fiabilidad.Resultados: La estructura final se conformó por 17 ítems distribuidos en 2 factores: perjuicios percibidos al disfrute de los DDHH y beneficios percibidos al disfrute de los DDHH. Se obtuvieron indicadores favorables en la fiabilidad de las puntuaciones (α > .70) y del constructo (ω > .70).Conclusiones: El instrumento propuesto presenta adecuada evidencia de validez con relación a su estructura interna y fiabilidad, y resulta útil para conocer el disfrute de los DDHH de los médicos residentes.
Compromiso laboral y estrés percibido en residentes de dermatología y otras especialidades en instituciones públicas
Authors: Zárate Flores Larissa Margarita , Morales-Sánchez Martha Alejandra
Published: April 2022

Introducción: El compromiso laboral es un estado mental positivo, satisfactorio y relacionado con el trabajo; caracterizado por vigor, dedicación y absorción; está relacionado con una mejor atención al paciente y menos errores médicos debido a la inexperiencia y/o falta de tiempo. Por otro lado, el estrés es un estado de cansancio mental, multifactorial, depende de la percepción de situaciones específicas y de la habilidad para sobrellevarlas. Los médicos residentes están sujetos a múltiples estresores perjudiciales a su desempeño.Objetivo: Describir el nivel de compromiso laboral y estrés percibido entre los residentes en la Ciudad de México y la probable relación entre estas variables.Método: Estudio cuantitativo, exploratorio, no experimental, descriptivo y de corte transversal. Se evaluaron un total de 248 residentes médicos de la Ciudad de México, utilizando las escalas UWES-15 y PSS. Análisis estadístico descriptivo y test de Chi cuadrado de Pearson.Resultados: La media de compromiso fue de 4.5 (± 1.2), y de las dimensiones: vigor (4.3, DE ± 1.4), dedicación (4.6, DE ± 1.3) y absorción (4.4, DE ± 1.3). El total de los residentes tuvo un promedio de 38.1 (DE ± 7.6) de estrés percibido. De acuerdo al análisis de asociación entre compromiso y estrés percibido, se encontró que existe una correlación moderada lineal negativa estadísticamente significativa (Spearman r = –0.443, p = 0.000).Conclusiones: Este estudio es el primero en examinar el nivel de compromiso laboral y de estrés percibido entre los médicos residentes de la Ciudad de México. Estas variables son comunes en la formación médica de los residentes, y se demostró que existe correlación negativa entre estas variables. Mejorar el compromiso laboral es importante tanto para los médicos jóvenes como para los pacientes, ya que estos últimos recibirán una atención de mejor calidad.
“Renaciendo”: Intervención Narrativa para la Mejora de la Satisfacción Personal y Laboral de Personal de Enfermeras
Authors: Quiroga Garza Angélica , Salinas Escamilla Cynthia
Published: April 2022

En la actualidad el sistema de salud se ve afectado por cargas excesivas de trabajo que conllevan el desarrollo de estrés y ansiedad durante la actividad laboral en sus trabajadores. En distintos hospitales de México la prevalencia del estrés laboral va del 22 a 63%, encabezando la lista médicos residentes y enfermeras. Con el objetivo de probar la efectividad del programa “Renaciendo” basado en Terapia Narrativa para la mejora de la satisfacción personal y laboral de enfermeras, se realizó una investigación cuasiexperimental, preprueba-posprueba, teórico-práctica con temporalidad transversal. Se trabajó con grupos intactos, uno de enfermeras profesionales y otro de estudiantes de enfermería realizando su estancia profesional en hospitales. Los resultados confirman la efectividad del programa para la mejora de la eficacia personal y la reducción de síntomas de agotamiento, depresión, ansiedad y estrés. Con puntuaciones más altas altas en todas las variables, las enfermeras profesionales tuvieron una reducción significativa solamente en estrés y ansiedad, en tanto que las estudiantes de enfermería disminuyeron significativamente el estrés y la depresión y aumentaron su eficacia personal. Programas de intervención sistémico- narrativos son necesarios ya que permiten mejorar la eficacia personal así como prevenir y disminuir el agotamiento laboral y los estados emocionales displacenteros asociados que afectan personal de enfermería. Las limitaciones de tiempo y alcance son temas prioritarios en el desarrollo de este tipo de intervenciones.
Enseñanza de las matemáticas en invidentes desde la revisión sistemática
Authors: Llamazares de Prado José Enrique , Arias Gago Ana Rosa
Published: April 2022

El objetivo de este estudio es analizar la relación de las matemáticas con el uso de las TIC y su adecuación a la educación, a través de la realización de una revisión sistemática de los estudios de matemáticas en estudiantes con problemas de visión. Se partió de 416 artículos examinados hasta llegar a 36 artículos finales. Para ello se utilizó el gestor bibliográfico Mendeley. En los resultados se destaca la escasez de estudios en idioma español frente a los internacionales, la necesidad de cooperación entre familia y escuela, así como la implementación de las mejoras internacionales en modelos nacionales y la integración de asignaturas en el modelo STEM. En las conclusiones se evidencia la importancia del desarrollo matemático de los estudiantes con problemas de visión para mejorar el procesamiento del pensamiento y la resolución de problemas, así como la relación entre la memoria a corto y largo plazo.
Arabic Learning in Industrial Revolution 4.0: Problems, Opportunities, and Roles
Authors: Fikri Ahmad , Muid Abdul , Ilhami Rosita , Norhidayah Norhidayah , Ilmiani Aulia Mustika , Ikhlas Muhammad
Published: April 2022

Technological capabilities in the era of the industrial revolution 4.0 can facilitate the learning process. However, some Arabic language education students at Jambi University still find it difficult to learn Arabic and decide to change majors. This study  finds out how the problems, opportunities, and roles of the Arabic language during the industrial revolution 4.0 in the Arabic language education study program at  Jambi University. This research is a descriptive qualitative with data collection techniques: a) observation; b) interviews; and c) documentation. Meanwhile, data analysis techniques include: a) data reduction; b) data presentation; c) conclusions. Triangulation and discussion has been use to validate the data. The results show that: a) the problems of learning Arabic, such as: 1) differences background for the students; 2) students are less interested in learning Arabic; 3) no Arabic speaking environment; and 4) lecturers have not mastered technology; b) opportunities: the ability to speak Arabic provides an opportunity to get or create jobs not only in the education sector, but also in other sectors; while c) the role of Arabic is one of international language, diplomatic communication between countries in various fields, and learning knowledge from original Arabic sources.
Creative Teaching Model for Second Language Learning in the Post-Pandemic Era
Authors: Sari Risna Rianti , Syarofah Alfiatus , Mubarok Harir
Published: April 2022

Indonesia is currently trying to reorganize the education system post-pandemic by using  hybrid learning system. In this hybrid learning process, lecturers are required to grow and develop their  creativity. This article described the mapping of the model of second language teaching lecturers both English and Arabic at Maulana Malik Ibrahim State Islamic University of Malang on creativity in teaching, in particular to find out how well they understand the concept of creativity and the implementation of creative teaching in the form of classroom activities. This method used was qualitative approach with the type of content analysis. Data were collected through in-depth interviews with 21 second language lecturers, then the data were analyzed using Krippendorff content analysis. The results of this study indicated that second language lecturers had a comprehensive understanding of the demands of creativity in this post-pandemic, because they can clearly explained the meaning of creativity both in ideas and in its realization. In addition to understood creativity and its implementation in teaching activities, this research also showed the synergy between individual creativity as reflected in professional teaching and organizational creativity as seen from the readiness of this university to develop students' creative attitudes through support for campus facilities.
Family-of-origin triangulation and marital stability: A multiple mediation model
Authors: Song Yang , Liu Sitong , Liu Yongfang
Published: April 2022

Previous research on family triangulation has mainly focused on nuclear family triangulation. In this study we explored the effects of family-of-origin triangulation on marital stability in China, and the mediating roles of parenting sense of competence and coparenting. Participants
were 1,144 Chinese parents aged 24 to 48 years, who completed surveys on family-of-origin triangulation, parenting sense of competence, coparenting, and marital stability. The results show that family-of-origin triangulation was negatively associated with marital stability. This relationship
was mediated by coparenting, but the mediating effect of parenting sense of competence was nonsignificant. In addition, parenting sense of competence and coparenting sequentially mediated the relationship between family-of-origin triangulation and marital stability. Our findings highlight
the risk of harm to marital stability from family-of-origin triangulation.
Development and in vitro study of Metronidazole loaded cross linked sodium alginate and gellan gum microspheres
Authors: Das Sudipta , Pan Rahul , Dey Rimi , Ghosh Mamata
Published: April 2022

Formulation of metronidazole loaded trivalent ion Al+3 cross-linked and gellan gum microspheres was developed. The Metronidazole loaded microspheres were prepared taking sodium alginate, gellan gum as excipients along with maleic anhydride, aluminium chloride as cross-linking agents. The evaluation processes of prepared metronidazole microspheres were done by in-vitro release study, microscopic analysis and swelling index. Each of the formulations shows good entrapment efficiency with the maximum entrapment 85.8±5.63% was governed by the F1 formulation while F2 formulation confirms 82.3±4.72% drug entrapment. The formulations provided the controlled release delivery pattern of Metronidazole.

Keywords: Microspheres, Metronidazole, Gellan gum, Aluminium chloride, Maleic anhydride
Abordagem interdisciplinar sobre saúde: relato de experiência no contexto da Educação Básica
Authors: Sousa Marta Caires de , Guimarães Ana Paula Miranda , Amantes Amanda , Ferreira Graça Regina Armond Matias
Published: April 2022

Este trabalho apresenta um relato de experiência de uma aula interdisciplinar sobre “Saúde e Qualidade de Vida” dirigida a estudantes do Ensino Médio. A construção da aula foi realizada com professores da educação básica, da área Ciências da Natureza, abrangendo conhecimentos relativos às disciplinas Biologia, Física e Química em interface com a temática saúde, considerando a interdisciplinaridade como princípio orientador. A aula foi destinada a um programa da Secretaria da Educação do Estado da Bahia, o qual oferta ensino remoto a estudantes residentes em regiões de difícil acesso do Estado, envolveu quinze professores e alcançou cerca de quinze mil estudantes do Ensino Médio. Na aula, além de conteúdos formais correlatos à saúde, foram também apontadas as interfaces dos conceitos de saúde e discussões em torno do direito à saúde e do Sistema Único de Saúde (SUS). Ressalta-se que uma abordagem ampla sobre saúde é possível e necessária no contexto do Ensino de Ciências, e que os aspectos relacionados à organização e ao funcionamento do SUS despertaram curiosidades e interesses por parte dos docentes e dos estudantes, contribuindo para um processo de ensino e de aprendizagem dinâmico, interativo e elucidativo. É necessário e relevante abordar questões sociopolíticas no ensino, como é o caso da saúde e o seu viés enquanto política pública. Este relato se situa no contexto de uma pesquisa mais ampla sobre concepções de saúde subjacentes ao Ensino de Ciências, e a realização da aula interdisciplinar correspondeu à etapa final da pesquisa.
PERCEPÇÃO DA GESTÃO AMBIENTAL NO CONTEXTO ESCOLAR DO SERTÃO NO NORDESTE BRASILEIRO
Authors: Duda Edivaldo do Nascimento , Araújo César Augusto de Albuquerque , Severo Eliana Andréa , Nodari Cristine Hermann , Neto Manoel Pereira da Rocha
Published: April 2022

A gestão ambiental nas escolas é de grande relevância a fim de trazer novos valores científicos e culturais e ações práticas que irão contribuir para um futuro sustentável. Este estudo tem como objetivo analisar a percepção dos pais de alunos de uma Escola de ensino fundamental e médio em Caicó - Rio Grande do Norte (RN), sobre a sustentabilidade ambiental e a preservação do meio ambiente. Tratou-se de uma pesquisa quantitativa e descritiva, por meio da percepção de 152 respondentes. Os principais resultados destacam que as práticas ambientais desenvolvidas pela escola são vistas de forma positiva por parte dos pais dos alunos, o que impacta diretamente no momento da escolha da escola para seus filhos, bem como Caicó é a sétima maior população municipal no RN, entretanto ainda não se realiza a correta segregação, tratamento e disposição final dos resíduos sólidos urbanos.
AKTIVITAS ANTIDIABETES SECARA IN VITRO EKSTRAK ETANOL DAUN DAN KULIT BATANG BINTANGUR (Calophyllum rigidum Miq.)
Authors: Septiana Eris , Simanjuntak Partomuan
Published: April 2022

ABSTRACT

Diabetes mellitus is still a serious health problem both in the world and in Indonesia. The use of plants as a source of antidiabetic medicine is still needed. Bintangur plant, Calophyllum rigidum, contains active compounds that have the potential to act as anti-diabetic drugs but have not been used optimally. The purpose of this study was to determine the in vitro antidiabetic activity of the ethanol extract of Calophyllum rigidum stem bark and leaves. The antidiabetic method used was α-glucosidase enzyme inhibition. Phytochemical screening is based on color change reactions. The results obtained showed that the ethanol extract of stem bark and leaf had α-glucosidase enzyme inhibitory activity with IC50 values ​​of 63.75 and 65.86 µg/mL, respectively. Both extracts contain alkaloids, flavonoids, steroids/triterpenoids, saponins, and tannins, while quinones are only found in the stem bark extracts. The conclusion is that the ethanol extract of the stem bark and leaves of Calophyllum rigidum has active antidiabetic activity through inhibition of the α-glucosidase enzyme.

Key words: antidiabetic, α-glucosidase, Calophyllum rigidum, phytochemical screening

ABSTRAK

Penyakit diabetes mellitus masih merupakan masalah kesehatan serius baik di dunia maupun di Indonesia. Pemanfaatan tanaman sebagai sumber bahan obat antidiabetes masih diperlukan. Tanaman bintangur, Calophyllum rigidum, mengandung senyawa aktif yang berpotensi sebagai obat antidiabetes namun belum dimanfaatkan secara optimal. Tujuan penelitian ini adalah untuk mengetahui aktivitas antidiabetes secara in vitro dari ekstrak etanol kulit batang dan daun Calophyllum rigidum. Metode antidiabetes yang digunakan adalah penghambatan enzim α-glukosidase. Penapisan fitokimia berdasarkan pada reaksi perubahan warna. Hasil yang didapatkan yaitu ekstrak etanol kulit batang dan daun memiliki aktivitas penghambatan enzim α-glukosidase dengan nilai IC50 masing-masing sebesar 63,75 dan 65,86 µg/mL. Kedua ekstrak mengandung golongan senyawa alkaloid, flavonoid, steroid/triterpenoid, saponin, dan tannin, sedangkan kuinon hanya ditemukan pada ekstrak kulit batang. Kesimpulannya ialah bahwa ekstrak etanol kulit batang dan daun Calophyllum rigidum memiliki aktivitas antidiabetes yang aktif melalui penghambatan enzim α-glukosidasi           

Kata Kunci : antidiabetes, α-glukosidase, Calophyllum rigidum, penapisan fitokimia
SHORT COMMUNICATION: FIRST RECORD OF Aleurocanthus camelliae (Homoptera: aleyrodidae) IN INDONESIA, AN INVASIVE PEST ON VARIOUS MEDICINAL PLANTS
Authors: Adi M Bakti Samsu , Susanti Dian
Published: April 2022

ABSTRACT

Aleurocanthus camelliae was identified as a new species in 2011. The distribution of this species in worldwide is not widely known, including in Indonesia. These findings report the existence of A. camelliae in Indonesia as a new record based on morphological characters, previously identified as A. spiniferus. The study was carried out in August 2019 using an observation method in three locations with different altitudes around Mount Lawu. The result showed the species parasitized 13 medicinal plant species in two observation location (495 m asl and 1,200 m asl). Keywords: Aleurocanthus spiniferus, morphology, camellia spiny whitefly, invasive pest, medicinal plant.

ABSTRAK

Aleurocanthus camelliae diidentifikasi sebagai spesies baru telah dilakukan pada tahun 2011. Sebarannya diseluruh dunia belum banyak diketahui, termasuk di Indonesia. Laporan ini menyampaikan hasil pengamatan tentang keberadaan A. camelliae di Indonesia sebagai catatan baru berdasarkan karakter morfologi. Penelitiandilakukan pada bulan Agustus 2019 dengan metode observasi di tiga lokasi dengan ketinggian berbeda di sekitar Gunung Lawu. Hasil penelitian menunjukkan bahwa spesies ini telah memarasit 13 jenis tumbuhan obat di dua lokasi pengamatan pada ketinggian 495 m dpl dan 1.200 m dpl.

Kata kunci: Aleurocanthus spiniferus, morfologi, kutu putih, hama invasif, hama tumbuhan obat.
La radio educativa y su papel en la radicalización de la democracia
Authors: Pérez Bernal Juan Carlos
Published: April 2022

Uno de los principales aportes de este artículo está en la mirada de los habitantes rurales de Colombia como sujetos políticos y de investigación, con el propósito de promover la representación y construcción de identidades políticas entre esa población, una de las más invisibilizadas e ignoradas del país. En ese contexto —y desde las perspectivas filosóficas del humanismo cívico, la democracia radical y la comunicación-educación— se buscó describir cómo se puede de cualificar el ejercicio de las nuevas ciudadanías en las Escuelas Digitales Campesinas (E.D.C.) de ACPO, la antigua Radio Sutatenza.

El método aplicado en este trabajo fue la Investigación Acción Participativa (IAP), que se caracteriza por propiciar la relación sujeto-sujeto para la producción, divulgación y reconocimiento colectivo de saberes y conocimientos. Las herramientas metodológicas, se enfocaron en el periodismo literario; la ecología de saberes y el contrato de lectura, este último postulado y desarrollado por el semiólogo argentino Eliseo Verón.

Como resultados se destaca la realización del programa radial semanal “Mundo Rural” —desde 2013 hasta la fecha— y el podcast “Las cartas del campo”. Se concluye en este trabajo sobre la importancia del ejercicio práctico y cotidiano de nuevas ciudadanías que surgen en los territorios, con las voces directas y acciones cotidianas de los habitantes rurales, quienes son los encargados de dar sentido a la democracia radical, al humanismo cívico y a la comunicación-educación. Estas tres corrientes del pensamiento y la acción política tienen en común que consideran a los ciudadanos como el centro y razón de ser de la vida cívica y educativa. Así, mientras en el humanismo cívico y la democracia radical la identidad individual o colectiva se constituye en el orden simbólico, esto es, en el lenguaje, la comunicación-educación postula el universo expresivo de los educandos como el eje del proceso de interaprendizaje, gracias a los grandes conocimientos y saberes populares.
Molecular phylogeny of Dermestidae (Coleoptera) reveals the polyphyletic nature of Trogoderma Latreille and the taxonomic placement of the Khapra Beetle Trogoderma granarium Everts
Authors: ZHOU Yu-Lingzi , Nicholls James , Liu Zhen-Hua , Hartley Diana , Szito Andras , Ślipiński Adam , Zwick Andreas
Published: April 2022

The hide, larder and carpet beetles (Coleoptera: Dermestidae) are a
family of mainly scavenger beetles, with numerous species such as the
khapra beetle , the black carpet beetle and the hide beetle, being
widely recognised as serious economic pests of stored products and
museum collections. In this study we examined and sequenced
mitochondrial genomes of 477 dermestid specimens, representing all
subfamilies and 90% of tribes and subtribes. Our study provides the
most comprehensive, taxonomically verified and vouchered resource of
mitochondrial reference sequences and occurrence records of pests and
their relatives, enabling eDNA surveys, metabarcoding and molecular
species identification. It also reconstructs the phylogeny of
Dermestidae based on molecular and morphological data for the first
time, thereby providing robust phylogenetic hypotheses for a stable
classification system from family to genus-level. Accordingly, a revised
classification of Dermestidae with formal nomenclatural changes is
proposed, recognising six subfamilies: Orphilinae, Trinodinae,
Trogoparvinae subfam. nov. (type genus Trogoparvus Háva, 2001),
Dermestinae, Attageninae and Megatominae. Attageninae is strongly
supported and includes the monogeneric Adelaidiini and polygenic
Attagenini. Former subgenera of Attagenus Latreille are elevated to
generic level. The largest clade, Megatominae, is confirmed as
monophyletic and is divided into three tribes. Megatomini is divided
into three subtribes: Megatomina, Orphinina subtribe nov. and
Trogodermina. Within the economically important lineage Trogodermina,
Trogoderma is delimited to contain Holarctic species including the
Khapra beetle T. granarium, while a Southern Hemisphere clade is here
recognised as Eurhopalus Solier in Gay. A revised classification of the
extant genera of Dermestidae is also provided.
Covariance matrix design of transmit waveform for MIMO dual-function radar-communication system
Authors: Wu Haozheng , jin biao , Zhang Zhenkai , Lian Zhuxian
Published: April 2022

The multiple-input multiple-output (MIMO) dual-function
radar-communication system can adjust the sidelobe level (SLL) by
transmit beamforming to realize the communication function in the
line-of-sight channel. However, a high SLL of the transmit beampattern
can affect target detection performance. We propose a low-sidelobe
covariance matrix design of transmit waveform method to address this
issue. Minimizing the integrated sidelobe level is taken as the
objective function with the constraint of the mainlobe lower and upper
bounds. The optimal global solution can be obtained by the interior
point algorithm since the objective function is semi-definite
programming. Finally, the simulation results verify the performance in
transmit beampattern and bit error rate.
Mechanical and dimensional stability behaviours of alkali-treated calotropis gigantea fibre-reinforced bio-particles impregnated epoxy composites
Authors:   Department of Mechanical Engineering, Bharath Institute of Higher Education and Research, Chennai, Tamilnadu, India, Jeyapragash R. , Srinivasan V. ,   Department of Mechanical Engineering, Bharath Institute of Higher Education and Research, Chennai, Tamilnadu, India, Sathiyamurthy S. ,   Department of Automobile Engineering, Easwari Engineering College, Chennai, Tamilnadu, India, Swaminathan G. ,   Department of Mechanical Eng., SRM Institute of Science and Technology, Ramapuram Campus, Chennai, Tamilnadu, India
Published: April 2022

Calotropis gigantea fibre has been identified as suitable reinforcement fibre in polymer composites by current researchers. Epoxy matrix provided better interfacial bonding with the fibres and particulates to enhance the mechanical properties of pure polymer substances. If elements such as chitosan, rice husk and red mud have been added in epoxy system, it improves the mouldability and fills the missed portion of fibre reinforcement in composites. Alkaline treatment of natural fibres produce conversion of cellulose and production of short length crystallites which enhances surface roughness on the fibre surface for developing better adhesion between constitution materials of composites. The new variety of natural fibre extracted from stem of Apocynaceae family plant has been used in epoxy matrix along with bio and industrial residues in the present investigation. The three point flexural strength, tensile behaviour and izod impact strength have been evaluated and dimensional stability characteristics are identified for the calotropis gigantea fibre reinforced particulates impregnated epoxy composites.