Miracle-dz/UniFAR-FTUs huggingface dataset:
Designing a TEFL Mobile Application for EFL Teachers: An Empirical Study

This paper provides a description of designing the KFS TEFL mobile application that provides a new alternative learning material for EFL teachers. The researcher followed the ADDIE Model for instructional design in producing the application. Before designing the application, a semi-structured online need analysis questionnaire was given to 124 participants with diverse nationalities and academic backgrounds to identify the necessity for developing university TEFL courses. Moreover, the most needed topics to be addressed in the application were selected. The data collected by the need analysis questionnaire were analyzed and used as a basis for designing the application. The application is a comprehensive course that includes six main topics covered with varied material: written explanations, video lectures, quizzes and reference books. The researcher employed three programs for designing the application;namely: Microsoft PowerPoint 2010, iSpring Suite Version 9.3. 2 and Website 2 APK Builder Version 2.2. Designing and producing such applications meet the increased demands on online learning after COVID-19. In addition, authentic mobile applications can be published on Google Play to reach a huge audience and be financially profitable for their authors. An evaluation questionnaire was administered to a sample of twenty-seven participants who used the application for six weeks. [ FROM AUTHOR] Copyright of Journal of Education - Sohag University is the property of Journal of Education - Sohag University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)
Teaching Methods in Undergraduate Intermediate Theory, Statistics and Econometrics, and Other Upper-Division Economics Courses: Results From a Sixth National Quinquennial Survey

This article is an extension of a recent article published in The American Economist (Asarta et al., 2021) and presents the second report of basic findings from the 2020 online administration of the sixth national quinquennial survey on teaching and assessment methods in economics. Consistent with the results from the first report, we find that “chalk and talk” remains the staple method of instruction across the entire undergraduate economics curriculum. Lessons, activities, and references that address diversity, inclusion, or gender issues are almost never used in intermediate theory, statistics and econometrics, and other upper-division field courses. There has been notable growth in the use of cooperative learning/small-group assignments, as well as in instructor-led and “student(s) with student(s)” discussions over the past 25 years. Overall, however, there have been minimal changes in teaching methods over time. JEL Classifications : A20, A22
The Magnetic Properties of Fe/Cu Multilayered Nanowires: The Role of the Number of Fe Layers and Their Thickness

Multi-segmented bilayered Fe/Cu nanowires have been fabricated through the electrodeposition in porous anodic alumina membranes. We have assessed, with the support of micromagnetic simulations, the dependence of fabricated nanostructures’ magnetic properties either on the number of Fe/Cu bilayers or on the length of the magnetic layers, by fixing both the nonmagnetic segment length and the wire diameter. The magnetic reversal, in the segmented Fe nanowires (NWs) with a 300 nm length, occurs through the nucleation and propagation of a vortex domain wall (V-DW) from the extremities of each segment. By increasing the number of bilayers, the coercive field progressively increases due to the small magnetostatic coupling between Fe segments, but the coercivity found in an Fe continuous nanowire is not reached, since the interactions between layers is limited by the Cu separation. On the other hand, Fe segments 30 nm in length have exhibited a vortex configuration, with around 60% of the magnetization pointing parallel to the wires’ long axis, which is equivalent to an isolated Fe nanodisc. By increasing the Fe segment length, a magnetic reversal occurred through the nucleation and propagation of a V-DW from the extremities of each segment, similar to what happens in a long cylindrical Fe nanowire. The particular case of the Fe/Cu bilayered nanowires with Fe segments 20 nm in length revealed a magnetization oriented in opposite directions, forming a synthetic antiferromagnetic system with coercivity and remanence values close to zero.
Effect of Chelating Agents on Removal of Heavy Metal Cations of Cellulose-based Ion Exchange Resins from Water Hyacinth

Presently, heavy metal pollution in natural water resources is considered very hazardous. The purpose of this research is to develop the novel cellulose-based ion exchange resins from water hyacinth and the effect of chelating agents on the removal of heavy metal cations from single-metal aqueous solutions has been investigated. Cellulose was prepared from the stem of water hyacinth by alkaline treatment process then cellulose-based ion exchange resins were prepared via esterification reaction between cellulose with two different chelating agents such as pyromellitic dianhydride and 3,3’,4,4’- benzophenone tetracarboxylic dianhydride. The chemical structure, crystallinity index, surface morphology, and thermal stability of resins were characterized and analyzed with FTIR, XRD, SEM, and TGA, respectively. The results confirmed the esterification reaction between anhydride groups of chelating agents with hydroxyl groups of celluloses due to the apparent peak of the ester group. Heavy metal cations adsorptions were studied in optimum conditions and the residual concentration of heavy metal cations was measured by ICP. These resins showed high adsorption capacities of more than 98 mg/g for Pb2+, Cd2+, Cu2+, and Ni2+. Moreover, the adsorption process was controlled by the ion exchange mechanism. Therefore, the novel cellulose-based ion exchange resins could be suitable for the removal of pollutants from wastewater.
Effects of hydrogen peroxide treatment on the particle size distribution of hydrothermal vent sediments: A case study in Guishan Island, Taiwan

Particle size analysis is able to reveal essential information about processes like production, transportation, sorting, and deposition of a study area. Pre-treatment of sediment by using hydrogen peroxide is recommended for more accuracy of particle size distribution as it removes organic matter which is adsorbed on the grain particle. A shallow water where hydrothermal vents site are located in Guishan Island is selected as the study site in this research. Sediment samples were collected at the depth of 3 â€“ 5 cm from the seabed surface by SCUBA diving. Particle size analysis was conducted by dry sieving before and after hydrogen peroxide treatment. Results showed significant differences in very coarse sand (p < 0.05) as it decreases significantly in weight after treatment (10.62% of change). The other particle size level of sediment increases slightly in weight and the changes ranged from 1.20% to 2.60%, showing no significant difference (500Î¼m=0.59; p value 250Î¼m=0.67; p value 125Î¼m=0.48; p value 63Î¼m=0.47; p value >63Î¼m=0.38). Therefore, in order to accurately determine the particle size distribution at hydrothermal vent site, pre-treatment using hydrogen peroxide is recommended to remove organic material because hydrothermal vent is proved to have high organic matter content.
Evaluation of viral respiratory pathogens in children aged under five hospitalized with lower respiratory tract infections

Objective: Lower respiratory tract infections (LRTIs) are responsible for significant morbidity and mortality in children. Viral pathogens are responsible for 50–70% of LRTIs. The real-time multiplex polymerase chain reaction (RT-MPCR) tests allow the simultaneous detection of several different viruses along with some bacterial pathogens and give faster and more reliable results than viral culture. We aimed to describe the disease etiology and the clinical, laboratory, and radiological characteristics of children aged under 5 years who were hospitalized in a tertiary care medical center with LRTIs assayed using an RT-MPCR respiratory pathogen panel, and evaluate the effects of the detection of etiology on treatment and outcome. Methods: This retrospective study was conducted in the tertiary medical health center. The study group comprised all pediatric cases aged under five who were hospitalized due to LRTIs in the pediatric wards and pediatric intensive care unit (ICU) and undergone RT-MPCR analyses between January 2019 and February 2020. RT-MPCR analyses of samples from nasopharyngeal swabs were consecutively evaluated. Results: A total of 65 samples were collected from aged under 5 years who were hospitalized with LRTIs and screened for respiratory viruses. Specimens were collected from pediatric ICU (18.5%) and pediatric wards (81.5%). The overall positive rate was 89.2% (58/65). Forty of the patients (61.5%) were positive for a single pathogen, 15 (23.6%) for two, and three (4.6%) for three pathogens. The most common virus was respiratory syncytial virus (RSV) (32.3%), followed by human rhinovirus (HRV) (30.8%). In HRV-positive patients, eosinophil count was higher than that in Influenza A/B- and Human metapneumovirus-positive patients (respectively p=0.014, 0.005). In RSV-positive patients, hospitalization duration and neutrophil, lymphocyte, C-reactive protein level had moderate correlation (respectively; r=0.587; p=0.005, r=–0.436; p=0.038, r=0.498; p=0.022). Conclusion: Despite the limited number of participants from a single center, a wide range of causative pathogens were detected in our study. In addition, we found that viral pathogens are common etiologies of LRTIs. To describe the disease etiology in LRTIs, assays using an RT-MPCR respiratory pathogen panel, would be beneficial to the detection of etiology and treatment.
Does supportive supervisor complements the effect of ethical leadership on employee engagement?

Abstract The purpose of the study is to examine the effect of perceived supervisor support on the relationship between ethical leadership and employee engagement through organisational commitment in eastern culture. The study uses survey data from 389 employees of information technology sector in Pakistan. To study the relationship between the variables, linear regression, and Preacher & Hayes (2004) PROCESS techniques are used. The results of the study show that ethical leadership relates to employee engagement and organisational commitment. Organisational commitment mediates the relationship between ethical leadership and employee engagement. Perceived supervisor support moderates the relationship such that when perceived supervisor support is high, the effect of ethical leadership on employee engagement through organisational commitment is stronger. The results show that the positive perception of the supervisor complements the effect of ethical leadership on employee engagement through organisational commitment. Ethical leadership contributes towards the development and sustenance of organisational commitment and engagement among the employees. Drawing on social exchange theory, this study contributes to the organisational behaviour literature by studying the complementing effect of perceived supervisor support on the relationship between ethical leadership and employee engagement. An area that needs due attention.
Exploring learning outcomes of science experiments using physical instrument and substances assisted by digital entities

ABSTRACT Physical experiments on real-world systems are proposed as a means to raise learning outcomes and Arduino microcontroller is highlighted as an appropriate tool to perform them. However, experimentation on a real system may encounter various barriers. Therefore, a learning environment was developed in order to perform Arduino experiments on digital entities when the real ones are inaccessible. That was consisted of an Arduino-based pH meter from which measurements were transmitted to three different digital entities: a shoal of goldfish, an ancient Greek temple and an ancient Greek statue. In order to evaluate the learning outcomes of teaching through physical experiments on digital entities, a pre- to post-comparison was conducted on three Greek Junior High Schools. In each school, students were divided into two subgroups. The one group was taught about Acids and Bases through physical Arduino experiments by demonstration, using real instruments and substances, with a simultaneous observation of their effects on the digital entities in real-time, while the other group was taught through the same Arduino experiments by demonstration without the use of the digital entities. The results have demonstrated that students of the former group exhibited greater learning gains regarding Declarative Knowledge than those of the latter one. GRAPHICAL ABSTRACT
Generalized Anxiety as a Risk Factor for Dysfunctional Eating Behavior after Obesity Surgery during the COVID-19 Pandemic

Purpose: The present study investigates the impact of obesity surgery on mental health (i.e., eating behavior and distress) during the COVID-19 pandemic. Methods: Two hundred fifty-four participants were recruited via social media. One hundred fourteen (44.53%) of them were surgery candidates (waiting for obesity surgery), while 142 (55.46%) had already undergone surgery. Participants who underwent surgery were compared to participants that did not yet undergo surgery in terms of mental burden (depression and anxiety), as well as safety and eating behavior. Further moderation analyses attempted to identify risk factors for increased COVID-19-related dysfunctional eating behavior after surgery. Results: Participants who underwent surgery showed generally lower levels of depression and general anxiety on a trend level. Moderation analyses suggested that people with high levels of generalized anxiety actually show more dysfunctional COVID-19-specific eating behavior after obesity surgery. Conclusion: On a trend level, obesity surgery appears to attenuate symptoms of generalized anxiety and depression. Yet, surgery patients with high levels of generalized anxiety exhibit even higher levels of dysfunctional eating during the COVID-19 pandemic. It is therefore particularly important to support people at risk.
Evaluating the precariousness of coral recovery when coral and macroalgae are alternative basins of attraction

When coral and macroalgae are alternative attractors, the trajectory of the benthic community following a major disturbance is shaped in part by whether herbivores keep macroalgae suppressed, leaving reef surfaces in a state suitable for coral colonization. Because macroalgae tend to colonize much faster than coral, an important issue is how close ambient herbivory is to the level where control of macroalgae is lost, that is, the precariousness of the coral‐invasible state relative to the switch‐point to macroalgae. In Moorea, French Polynesia, reefs dominated by the macroalga Turbinaria ornata remained so for multiple population turnovers, whereas reefs where Turbinaria was removed by a simulated pulse disturbance remained free of macroalgae throughout the 5‐yr study. A field experiment revealed that macroalgae was unable to proliferate on disturbed reefs until ambient herbivory was reduced by more than 50%. Low precariousness of the coral‐invasible state facilitated a gradual transition to a coral community because it allowed sufficient time for coral to repopulate. Accumulation of coral on disturbed reefs was 3.5 times greater than on undisturbed, Turbinaria‐dominated reefs. Long‐term persistence of the coral‐invasible state was facilitated by high abundances of grazing herbivores that prevent the establishment of macroalgae, whereas persistence of the Turbinaria‐dominated state reflected the scarcity of browsing herbivores that consume mature macroalgae. By revealing processes that foster bistability of coral and macroalgae states, our work helps explain the rich dynamical behavior exhibited by coral reef communities in Moorea and elsewhere.
Impact of Medicare eligibility on informal caregiving for surgery and stroke

Abstract Objective To assess whether the intensity of family and friend care changes after older individuals enroll in Medicare at age 65. Data Sources Health and Retirement Study survey data (1998–2018). Study Design We compared informal care received by patients hospitalized for stroke, heart surgery, or joint surgery and who were stratified into propensity‐weighted pre‐ and post‐Medicare eligibility cohorts. A regression discontinuity design compared the self‐reported likelihood of any care receipt, weekly hours of overall informal care, and intensity of informal care (hours among those receiving any care) at Medicare eligibility. Data Collection Not applicable. Principal Findings A total of 2270 individuals were included; 1674 (73.7%) stroke, 240 (10.6%) heart surgery, and 356 (15.7%) joint surgery patients. Mean (SD) care received was 20.0 (42.1) weekly hours. Of the 1214 (53.5%) patients who received informal care, the mean (SD) care receipt was 37.4 (51.7) weekly hours. Mean (SD) overall weekly care received was 23.4 (45.5), 13.9 (35.8), and 7.8 (21.6) for stroke, heart surgery, and joint surgery patients, respectively. The onset of Medicare eligibility was associated with a 13.6 percentage‐point decrease in the probability of informal care received for stroke patients (p = 0.003) but not in the other acute care cohorts. Men had a 16.8 percentage‐point decrease (p = 0.002) in the probability of any care receipt. Conclusions Medicare coverage was associated with a substantial decrease in family and friend caregiving use for stroke patients. Informal care may substitute for rather than complement restorative care, given that Medicare is known to expand the use of postacute care. The observed spillover effect of Medicare coverage on informal caregiving has implications for patient function and caregiver burden and should be considered in episode‐based reimbursement models that alter professional rehabilitative care intensity.
Youthification of television through online media: Production strategies and narrative choices in DRUCK/SKAM Germany

This article discusses online media’s contribution to the youthification of television through the case study of DRUCK (tr. Pressure, 2018–), the German format adaptation of SKAM (tr. Shame, 2015–17). Youthification is understood as the television industry’s attempts to reach and win back teen and tween viewers with strategies in production, representations, aesthetics and distribution. In DRUCK, online media are integral to the youthification in all these strategies. Our multifaceted analysis of this serial combines perspectives from media industry studies to investigate production strategies, sociological analysis of film and television to examine the thematic and narrative choices and theories of transmedia storytelling to make sense of the specific distribution choices.
Sugar preferences ofthe Queensland Blossom Bat, Syconycteris australis: a pilot study.

Preferences of captive blossom bats for sugar types and concentrations were investigated. Blossom bats did not display a clear preference when presented pure sucrose or glucose solutions or an equal volume mixture of sucrose, glucose and fructose. However, a trend for avoidance of pure fructose solutions was evident. In contrast, blossom bats were very sensitive to variations in sugar concentration, preferring the most concentrated sugar solution (40 %) to the almost complete exclusion of others. These results suggest flowers may be chosen on the basis of sugar concentration and are discussed in reference to the highly specialised nectar/pollen diet of blossom bats.
Comparative Evaluation of Remineralizing Effect of Casein Phosphopeptide – Amorphous Calcium Phosphate Fluoride and Silver Diamine Fluoride on Demineralized Enamel Surfaces ( An In Vitro Study)

Introduction Caries initiation is associated with demineralization of the tooth enamel surface. Calcium and phosphorous are lost from the subsurface enamel, resulting in the formation of a subsurface lesion. Aim: this study aimed to investigate and compare the enamel surface ultramorphology and minerals content by Environmental Scanning Electron Microscope (ESEM) and Energy dispersive x-ray spectroscopy (EDX) and to assess micro-hardness (Vickers test) of demineralized enamel surface treated with CPPACP casein Phosphopeptide-Amorphous Calcium Phosphate Flouride(MI Paste Plus) or SDF ( FAgamine). Materials and methods: This study was conducted on twenty eight human premolars ,were collected from the outpatient clinic of Maxillofacial Department, Faculty of Dentistry, Suez Canal University. The selected premolars distributed into three groups: Group I: consisted of 7 intact sound premolars,(control group) Group II : consisted of 7 demineralized premolars,(demineralized group) while, Group III consisted of 14 premolars ( each one divided into 28 halves mesiodistally) then all 28 specimens of group III were demineralized and half of them were treated by MI Paste plus ( subgroup IIIa) and other were treated by SDF( subgroup IIIb). All Groups I,II&III were placed in artificial saliva for 7days at 37oc. Results: There was a statistically significant difference between calcium and phosphorus values of the three groups; subgroup IIIa showed the highest value followed by subgroup IIIb & group I and finally the least value was related to group II . The highest value of fluoride content related to subgroup IIIb. There was not statistically significant difference between microhardness values of group I and group III while group II revealed the lowest microhardness value. Conclusion: Both CPP-ACPF and SDF show areas of mineralized deposits and improvement of enamel ultrastructure. Also both CPP-ACPF and SDF are efficient remineralizing agent, but CPP-ACPF is more efficient as remineralizing agent than SDF. CPP-ACPF shows better microhardness results than SDF.
The Print Media in Times of Anti-Vaccine Lobby: A Content Analysis of National Newspaper Reporting in Spain

Although outbreaks of vaccine-preventable diseases have increased, immunization rates are decreasing in Europe. Extant literature has examined the media impact in the response to vaccine campaigns and risk perception. Building from Agenda-Setting Theory, we examine the newspaper reporting in Spain to explore the media portrayal of vaccines before the COVID-19 pandemic and identify potential implications in communication. Results revealed media cover outbreaks and vaccine supply related crises, and scientific research as the dominant themes. Positive and neutral tone significantly increased during the study period, while negative tone remained unchanged. Practical and theoretical implications are discussed.