bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGGUNAAN MODEL INOVATIF BLACK MARKET SEBAGAI UPAYA MEMPERTINGGI PEMAHAMAN KONSEP ALAT OPTIK PESERTA DIDIK
Authors: SOEHARTO TEGUH 
Published: January 2021

Model Inovatif Black Market dipakai untuk mempertinggi pemahaman kosep alat optik peserta didik di kelas VIII-5. SMPN 3 Babelan. Model Inovatif Black Market merupakan modifikasi dari metode drilling yang dimplementasikan dalam bentuk permainan untuk pengetahuan, sikap dan keterampilan peserta didik. Bentuk permainannya seperti proses tawar menawar objek di pasar gelap.Classroom action research digunakan sebagai metode dalam penelitian ini. Populasi berjumlah 120 peserta didik. Sampel yang digunakan sebanyak 30 peserta didik. Data perkembangan peserta didik diperoleh melalui observasi sikap dan evaluasi hasil belajar . Instrumen utama menggunakan instrumen LKPD, instrumen sikap dan lembar evaluasi terkait alat optik. Indikator keberhasilan peserta didik adalah hasil belajar alat optik di atas KKM (75).. Data perkembangan berupa data aktivitas, kerjasama, dan nilai pemahaman (hasil belajar) . Pemahaman konsep alat optik diawal penelitian = 59,13, siklus 1 = 63,45, siklus 2 = 70,47, dan siklus 3 = 78,95. Jadi diperoleh peningkatan pemahaman konsep alat optik sebanyak 33,51 %. Berdasarkan hasil analisis diperoleh pemahaman konsep Alat Optik semakin tinggi setelah menggunakan Model Inovatif Black Market . Hasil Penelitian ini dapat dijadikan bahan referensi untuk meningkatkan pemahaman konsep peserta didik. Penggunaan Model Inovatif Black Market dalam mempertinggi pemahaman konsep alat optik dapat terus dikembangkan
Estimating Case Fatality and Case Recovery Rates of COVID-19: is this the right thing to do?
Authors: Abdullatif Khafaie Morteza , Rahim Fakher 
Published: January 2021

Introduction: Case fatality rates (CFRs) and case recovery rates (CRRs) are frequently used to define health consequences related to specific disease epidemics, including the COVID-19 pandemic. This study aimed to compare various methods and models for calculating CFR and CRR related to COVID-19 based on the global and national data available as of April 2020.Methods: This analytical epidemiologic study was conducted based on detailed data from 210 countries and territories worldwide in April 2020. We used three different formulas to measure CFR and CRR, considering all possible scenarios.Results: We included information for 72 countries with more than 1,000 cases of COVID-19. Overall, using first, second, and third estimation models, the CFR were 6.22%, 21.20%, and 8.67%, respectively; similarly, the CRR was estimated as 23.21%, 78.86%, 32.23%, respectively. We have shown that CFRs vary so much spatially and depend on the estimation method and timing of case reports, likely resulting in overestimation.Conclusion: Even with the more precise method of CFRs estimation, the value is overestimated. Case fatality and recovery rates should not be the only measures used to evaluate disease severity, and the better assessment measures need to be developed as indicators of countries’ performance during COVID-19 pandemic.
The Transcending Age: A Study of Psycho-social Wellbeing of Elderly Women in India
Authors: Hussain Sabiha 
Published: January 2021

India is witnessing rapid growth of elderly population. The population aged 60 years or older
is projected to climb from 9% in 2015 to 19% in 2050 and to 32% in 2100 (UN, 2017). Aging
population requires attention on their physical, social and emotional well-being. Wellbeing
encompasses multiple interactive components which are beyond the conventional issues of
health and diseases. There is multitude of social relationships and dynamics of social roles
that women in this age negotiate in their lives. Family dynamics, compatibility with partner,
household headship, decision making and level of autonomy, incidences of domestic violence,
security concerns, care-giving, perceptions of self, societal status do influence quality of life
and wellbeing.
Using primary survey data of 165 women aged 60 to 65 years residing in urban areas in
Delhi-National Capital Region (NCR) interviewed during first quarter of 2018, the paper
attempts to understand what does well-being mean to them, how do they ensure it, what are the
psycho-social barriers and how do they overcome them. Purposive sampling and snowballing
techniques has been employed to identify these women.
Increase in health related problems especially mobility issues, lifestyle diseases along with
depression were predominant in this age. For women in post 60 years of age, respect and
appreciation from family and society is vital to ensure their happiness, while family bonding
and overall contentment stands out for ensuring wellbeing. Religious pursuits and social
interaction are the fundamental coping mechanisms from stress. Inadequate and incomplete
education and early marriage rooted in patriarchy and financial dependence are the principal
sources of regret in lives of these women. Widowed women were identified as the most
vulnerable. Women in the lowest income group and literacy level were further marginalized
and needed help from state. Evident gaps were reported in the existing welfare government
schemes for this age.
The Combustion Characteristics of Waste Liquor from Renewable Plant-Derived Chemical Polyol Processing
Authors: WANG Dawei , ZHAO Guangbo , LI Yuting , LUAN Yigang 
Published: January 2021

An experimental study was carried out to investigate the combustion characteristics of plant-derived polyol liquor waste using thermogravimetric analyzer and vertical tube furnace tests. The research results showed that the waste liquor combustion reaction comprised four processes: evaporation, pyrolysis, combustion, and inorganic salt reaction, and that a wave peak exists for each process. The pyrolysis process, which is the most violent reaction, exhibited the maximum peak weight-loss rate and weight-loss ratio and had the lowest activation energy and frequency factor. The peak weight-loss rate of inorganic salt reaction process was less than that during the combustion process, but sodium alkali has catalytic effect at high temperature, which makes the activation energy and the frequency factor of inorganic salt reaction process less than that of the combustion process. The ignition temperature of the waste liquor in the vertical tube furnace was lower than the temperature in the thermogravimetric analyzer. The ignition temperature of pyrolysis volatiles measured in a vertical tube furnace was less than 700 °C but the ignition temperature of carbon combustion as measured with TG – DTG was 718 °C. When the temperature inside vertical tube furnace was higher than 800 °C, the waste liquor combustion process becomes almost instantaneous (about 8 s) and is violent, which produces more residual carbon content in the combustion products as a longer holding time is necessary to ensure that the reaction is completed.
Apuntes sociológicos de las inmigrantes suramericanas (Ecuador, Bolivia y Colombia) en Mallorca.
Authors: Mulet Trobat Bartomeu , Oliver Cardell Catalina , Alvarez Liliana , Gelabert Noguera Biel , González Paredes Francisco , Caramés Balo Rosa 
Published: January 2021

Se trata de visibilizar y mostrar las desigualdades de género en el marco de la diversidad cultural, en un contexto de multiculturalidad transcultural jerarquizada en Mallorca como sociedad receptora. Para constatar estos planteamientos se realizaron entrevistas en profundidad a mujeres afro-ecuatorianas y originarias, emigradas de Suramérica hacia Mallorca, registrando sus respuestas en un cuestionario-guía preestablecido. Éste fue contestado por 39 mujeres de origen étnico afro-ecuatoriano y originarias de Ecuador, Colombia y Bolivia. Estas mujeres constituyen una muestra y un ejemplo significativo de la feminización de la migración y la supervivencia colectiva.
The aim is to make visible and show gender inequalities within the framework of cultural diversity, in a context of hierarchical cross-cultural multiculturalism in Mallorca as a host society. In order to verify these approaches, in-depth interviews were conducted with Afro-Ecuadorian women and indigenous natives, emigrated from South America to Mallorca, recording their responses in a pre-established questionnaire-guide. This was answered by 39 women of Afro-Ecuadorian and indigenous ethnicity from Ecuador, Colombia and Bolivia. They represent a significant aspect of the feminization of migration and collective survival.
Las expectativas y metas de las familias gitanas en Canarias hacia el éxito escolar
Authors: Carmona Santiago José , García Ruíz Marta , Maíquez Chávez María Luisa , Rodirgo López María José 
Published: January 2021

La población roma/gitana en España oscila entre las 725.000 y las 750.000 personas. Sin embargo, solo el 22,2% del alumnado gitano logra acabar con éxito la Educación Secundaria Obligatoria, mientras que un 75,6% de la sociedad mayoritaria lo logra. A partir de una muestra de 90 familias gitanas, con hijos e hijas estudiantes entre 6 y 17 años residentes en las Islas Canarias, se analizan los deseos, expectativas, celebraciones más importantes y metas de los padres y madres gitanas respecto al futuro de sus hijos e hijas. La recogida de información se ha realizado a través de dos entrevistas semiestructuradas siendo el procedimiento de análisis la Teoría Fundamentada. Tras el proceso de selección se han identificado 15 familias, con metas orientadas al avance educativo de sus hijos e hijas, a las que se examinan las fortalezas, oportunidades, debilidades y amenazas que perciben. Este grupo de familias ha experimentado una buena relación con la escuela, se interesan y apoyan las tareas escolares, dando un paso hacia delante en la promoción de la formación académica de sus hijos e hijas. Son familias referentes, capaces de tener coherencia entre sus deseos, expectativas, celebraciones y prioridades; a lo que se le suma su destreza para hacer frente a los desafíos diarios y muestran la capacidad de creer que un futuro mejor es posible para sus hijos e hijas mientras luchan para conseguirlo.

The Roma population in Spain ranges between 725,000 and 750,000 people. However, only 22.2% of gypsy students successfully finish Compulsory Secondary Education, while 75.6% of the majority society achieves it. From a sample of 90 Roma families, with sons and daughters students between 6 and 17 years of age living in the Canary Islands, the wishes, expectations, most important celebrations and goals of Roma fathers and mothers regarding the future of their children are analyzed. The recollection of information was carried out through two semi-structured interviews, the procedure of analysis being the Grounded Theory. After the selection process, only 15 families oriented to the educational development of their sons and daughters have been identified, who were further examined which regard to the strengths, opportunities, weaknesses and threats they perceive. This group of families have experienced a positive relationship with the school, are interested in and support the school tasks, and have taken a step forward in the promotion of the academic achievement of their children. They are referent families, capable of having coherence between their wishes, expectations, celebrations and priorities; to which is added his ability to face the daily challenges, show the ability to believe that a better future is possible for their children as they struggle to achieve it
Evaluación de narrativas en formación dual docente: diseño y experimentación del instrumento SCAN
Authors: Peguera Carré Maria Carme , Curto Reverte Andreu , Ianos Maria Adelina , Coiduras Rodríguez Jordi Lluís 
Published: January 2021

En el artículo se presenta la construcción y validación del instrumento de evaluación Sistema de Categorías para el Análisis de Narrativas (SCAN) integrado en un dispositivo de formación dual. SCAN facilita una evaluación convergente por los distintos agentes de la Formación Dual Universitaria (FDU) en un grado de Educación Primaria: profesorado universitario, Docentes en Formación Inicial (DFI) y mentores escolares.
Este estudio de caso analiza con dos puntos de control la evolución de las narrativas sobre la práctica educativa en la escuela. Se presta especial atención a la relación teoría-práctica mediante la evaluación de cuatro dimensiones: Descripción, Comprensión, Proyección y Aspectos formales.
El análisis de las narraciones de 150 DFI muestra una mejora significativa entre el pretest y el postest, especialmente relevante en la dimensión Proyección, evidenciándose en las categorías: Competencias Docentes, Intervención Docente y Oportunidades de Desarrollo.
Se concluye que el procedimiento formativo descrito contribuye al desarrollo de la Visión Profesional desde una revisión crítica de la práctica. SCAN muestra en este estudio su eficiencia en el análisis y la evaluación de las narrativas de los DFI.
This article addresses a problem widely described in the literature: the theory-practice integration in the texts of Teachers in Initial Training (DFI). A training device is presented with an assessment instrument called Narratives Analysis Categories System (SCAN). This allows a convergent evaluation by the different actors of the Dual University Training (FDU) in the degree of Primary Education: the university teaching staff, the DFI and the school mentors.
The case study focuses on the evolution of narratives about educational practices in schools. The analysis of the narratives of 150 DFI is carried out at two checkpoints through the SCAN. This instrument is structured in four dimensions: Description, Understanding, Projection and Formal Aspects.
The results show a significant improvement of the DFI, especially relevant in the Projection dimension and being this evidenced in the categories: Teaching Competencies, Teaching Intervention and Development Opportunities.
In conclusion, the training with narratives contributes to the development of the Professional Vision from a critical review of the practice. In this study SCAN shows its efficiency in the analysis and evaluation of DFI narratives.
Monitoring recovery of overgrazed lichen communities on Hagemeister Island, southwestern Alaska
Authors: Walsh Patrick , Goward Trevor 
Published: January 2021

Understanding the recovery rate of overgrazed lichen communities has value to mangers of lands in northern regions. We describe lichen community composition and present recovery rate measurements for a 12-year period following overgrazing by reindeer (Rangifer tarandus) on Hagemeister Island, Alaska. Reindeer were removed from the island in 1993 following overgrazing and average total lichen biomass increased from 504.2 kg/ha (SD 205.4) in 2003 to 795.3 (SD 489.6) in 2015. We estimate time to recovery with three competing growth curves which estimate grazeable biomass may be reached in 34-41 years. However, estimates of full recovery to climax biomass varied among the models, ranging from 71 to 400 years. In 2015, lichen communities were composed of various mixtures of at least 78 lichen taxa, and were dominated by Cladina stygia and other important reindeer forage species. While reindeer overgrazing diminished forage quantity, it did not extirpate preferred forage taxa.
Assessment of the Inherent in-vitro Antioxidant Potential of Commelina benghalensis Leaf Extract
Authors: Okoko Tebekeme 
Published: January 2021

Commelina benghalensis is a troublesome but exotic weed native to the African and Asian subregions used traditionally for the treatment and management of various disorders. The aim of this study was to investigate the potential antioxidant activity of the methanolic leaf extract of Commelina benghalensis using various in vitro models. This was done by investigating the ability of the extract to scavenge hydrogen peroxide and hydroxyl radical. Other activities assessed were the reducing ability, ability to inhibit erythrocyte damage and reduce ferrous-ascorbate induced lipid peroxidation on bovine liver and egg yolk homogenates. The results revealed that the plant extract possessed significant hydrogen peroxide and hydroxyl radical scavenging abilities. The extract also possessed significant ability to reduce ferric ions and molybdate VI. The methanolic extract also significantly inhibited hydrogen peroxide-induced erythrocyte hemolysis and lipid peroxidation. Lipid peroxidation in bovine liver and egg yolk homogenates induced by the ferrous-ascorbate system was also reduced by the extract. In many instances, the effect of the extract was concentration-dependent. (p < 0.05). This antioxidant activity of the extract is ascribed to the phytochemicals which probably acted in synergy thus the Commelina benghalensis leaves could be exploited both nutraceutically and pharmacologically.
The Effectiveness of Pistia stratiotes as Phytoremediation Agents in Reducing Lead (Pb) Levels in Batik Household Industrial Wastewater in Bakaran Village, Central Java-Indonesia
Authors: Ratna Khabibatulloh Dewi Kaswari , Slamet Isworo 
Published: January 2021

Background and Objectives: The Bakaran Batik industry is engaged in domestic textiles in Juwana district, Indonesia. The wastewater produced by the burnt batik is discharged into the environment without going through any prior treatment. Therefore, an effective and easy-to-implement processing technology is needed by the community. Phytoremediation technology is an effort to treat waste that is proven to be effective and easy to implement. This study aims to determine the effectiveness of the Pistia stratiotes in reducing Lead (Pb) levels in batik wastewater.
Methodology: The method used in this research is the type of experimental research. The research method is True Experimental with Post-test Only Control Group Design. The statistical test used is One Way Anova and linear regression test to determine the rate of degradation.
Results: showed that the Pistia stratiotes was effective in reducing lead levels of Lead (Pb) from an initial concentration of 0.042 ppm to 0.022 on a day for 48 hours, the speed of degradation was based on the linear equation - 0.0108x + 0.048, R² = 0.8526 in the treatment with Pistia stratiotes 50 grams, whereas in the 75 grams and 90 grams the Lead (Pb) concentration was not detected. Conclusions: Phytoremediation with the biological agent Pistia stratiotes is quite effective in degrading Lead (Pb) -containing batik waste.
Substance Abuse and Addiction among Undergraduates in Nigerian Private Universities; Communicating Behavioural Change for Sustainable Human Development
Authors: Omolola Oluwasola, , Goodluck Layefa, , Taye Babaleye, Samuel Oloruntobi 
Published: January 2021

Substance abuse among youths and young adults in Nigeria has been a significant health problem that threatens sustainable human development. There are a number of studies that have looked into drug abuse among adolescents. Some of the studies reported that youths experiment with substance abuse at some point in their lifetime. However, not so many of such researchers examined the implications of drug abuse on sustainable human development. This gap was the motivation for this study. The study explored substance abuse and addiction among undergraduates in Nigerian private universities; communicating behavioural change for sustainable human development. The study was premised on the self esteem, family, availability and proneness and developmental stages theories of drug abuse. Using the purposive sampling technique, the key informant interview was used to elicit information from 140 youths who are substance abusers in a private university in south west, Nigeria. Structured interview was also conducted to elicit additional information from the Student affairs officer of the said university. Findings reveal that substance abuse among youths has multi-causal elements. Besides, it was gathered that a lot of communication measures have been directed towards changing substance abusers’ behaviour. It was recommended that wholesome concerted efforts must be made to eradicate the menace for sustainable human development.
Evaluation of Atosiban Therapy in the Management of Preterm Labour in Indian Patients
Authors: Dewan Bhupesh , Navale Sanjaykumar , Shinde Siddheshwar 
Published: January 2021

Aims: To assess the efficacy and fetomaternal safety of atosiban among Indian pregnant women presenting with preterm labor.
Study Design: Prospective, open-label, multicentric, non-comparative, phase-IV clinical study.
Place and Duration of Study: Department of Obstetrics and Gynaecology at nine hospitals across India from October 2016 to December 2019.
Methodology: A total of 212 pregnant women admitted with preterm labour between 24 and 36 weeks of gestation were administered intravenous atosiban up to 48 hours. Efficacy was defined as the successful delay of delivery without the need of an additional or alternative tocolytic agent for 72 hours. Safety was evaluated by recording the occurrence of adverse events in the mother, fetus and neonate.
Results: Tocolytic efficacy of Atosiban was 84.88% at 48 hours and 74.15% at day 7 without additional tocolytic agent or retreatment after 48 hours. The mean number of days gained after the start of atosiban tocolysis were 29.15 ± 1.82 days with mean gestational age at delivery of 35.1 ± 3.33 weeks. Atosiban reduced the frequency of contractions from 4.3 ± 1.47 to 0.67 ± 1.13 contractions/30 min at 72 hours. The proportion of neonates with birth weights more than 2,500 gm was 41.67%. A total of 205 neonates out of 216 (94.95%) had APGAR score more than 7 after 5 minute. Atosiban successfully delayed the labour in 92.31% (n=13) of “Twin pregnancy” patients for 48 hours and beyond 7 days in 9 patients (69.2%). There were no serious adverse events reported.
Conclusions: In patients with threatened preterm birth, 48 hour tocolysis with atosiban was found to be safe and effective in preventing imminent preterm birth even when it was a twin pregnancy or associated with co-morbidities. Atosiban showed favorable side effects profile and improved the perinatal outcomes.
Clinical Trial Registry of India Number: CTRI/2017/03/008065;
Cost Analysis of Green Infrastructure Compared to Conventional Stormwater Storage
Authors: Zhang Pengfei , Ariaratnam Samuel T. 
Published: January 2021

Low Impact Development (LID), or green infrastructure, refers to a land planning and engineering design practice to address urban storm runoff. The nature of LID is to mimic the pre-development environment to retain runoff through infiltration, retention, and evaporation. Despite the fact that numerous studies have analyzed the performance of runoff volume reduction and peak flow of various green infrastructures, little is known regarding the economic benefits of adopting LID practices. In this research, three completed construction projects in the Phoenix, Arizona metropolitan area were selected to perform an alternative LID design including extensive green roof (GR) and permeable interlocking concrete pavement (PICP), to determine the cost effectiveness of using LID to reduce the use of a conventional stormwater storage system. A life cycle cost (LCC) analysis was conducted to better understand the cost benefits of applying LID to meet current drainage design criteria as per the project requirements. The results found that applying LID resulted in an average LCC saving rate of 23% compared to a conventional stormwater storage system over a 50 year service life and 15.1% over a full LID (GR+PICP) strategy. Furthermore, it was discovered that LID has little cost savings benefits when constructing above-ground retention basins due to cheaper associated construction costs.