Miracle-dz/UniFAR-FTUs huggingface dataset:
“How to teach social entrepreneurship to teacher-candidates through cultural promenades: the teacher-candidates’ views”

ABSTRACT The present study examines the effectiveness of cultural promenades as an interdisciplinary methodology to teaching social entrepreneurship to teacher-candidates, whose teaching specialty is economics, informatics or business administration. The methodology of the cultural promenade included field-research in Orchomenus in Boeotia, Greece organised by DIAZOMA NGO and the Teacher Education Program of Athens University of Economics and Business. This experience of the teacher-candidates is examined in the present research paper through qualitative research and in-depth interviews with 9 teacher-candidates. According to some main findings, interviewees were able to realise the neglected value of the site, how they can bridge the past with the present and how they can utilise the monuments that they visited, in order to help develop the area of Orchomenus in Boeotia in socio-economic terms. The present study is of great importance for policy-makers, as well as for teacher education programs and school teachers worldwide.
EVALUATING REFORESTATION OPTIONS FOR SURFACE MINES IN APPALACHIA

OF THESIS EVALUATING REFORESTATION OPTIONS FOR SURFACE MINES IN APPALACHIA During the last century coal extraction has degraded ecosystems in Appalachia, converting forested land into other cover types that have a diminished capacity to naturally progress to later stages of succession. This projects objective was to examine two options for land-use that can assist in returning the reclaimed surface mines to forested cover types, with increased ecosystem services, and a potential for economic gain. This project examined a biomass plantation and an American chestnut trial. In the biomass trial, greatest heights for American sycamore (12.3 m) and black locust (8.0 m) were found in the fertilizer plots. Mean individual tree biomass for American sycamore and black locust was 6.4 Kg and 5.3 Kg, respectively; no significant differences were found among treatments. In the American chestnut trial, experimental wide survival was 47.2% in 2009, dropping to 24.74% in 2017. No significant differences were found by genotype, stock type, or the interaction in 2017. Use of mined land for woody biomass plantations and locales for chestnut restoration shows potential if proper management techniques are followed. Given the vast amounts of land disrupted by mining activities in Appalachia, approaches such as these deserve further attention and additional research.
Spatial organization of cortical actin alignments for the ooplasmic segregation of ascidian Ciona eggs

Spatial reorganization of cytoplasm in zygotic cells is critically important for establishing the body plans of many animal species. In ascidian zygotes, maternal determinants (mRNAs) are first transported to the vegetal pole a few minutes after the fertilization, and then to the future posterior side of the zygotes in later phase of the cytoplasmic reorganization, before the first cell division. Here, by using a novel fluorescence polarization microscope that reports the position and the orientation of fluorescently labeled proteins in living cells, we mapped the local alignments and the time-dependent changes of cortical actin networks in Ciona eggs. The initial cytoplasmic reorganization started with the contraction of vegetal hemisphere ∼20s after the fertilization induced [Ca2+] increase. Timing of the vegetal contraction was consistent with the emergence of highly aligned actin filaments at the cell cortex of vegetal hemisphere which ran perpendicular to the animal-vegetal axis. We propose that the first ooplasmic segregation is initiated by the local contraction of laterally aligned cortical actomyosin in the vegetal hemisphere, which in turn generates the convectional flow of cytoplasm within whole eggs. SUMMARY STATEMENT Locally distinct, transient emergence of cortical F-actin alignments were observed in live ascidian Ciona eggs during the first ooplasmic segregation by using fluorescence polarization microscopy.
Magnetic solid-phase extraction of pyrethroid insecticides from tea infusions using ionic liquid-modified magnetic zeolitic imidazolate framework-8 as an adsorbent

A simple, sensitive, and reliable magnetic solid-phase extraction (SPE) method coupled with GC-MS/MS for the effective analysis of four pyrethroids from tea infusions was developed. A magnetic adsorbent, named ionic liquid-modified magnetic zeolitic imidazolate framework-8 (Fe3O4/ZIF-8/IL), was prepared by immobilizing an ionic liquid (IL) on the surface of Fe3O4/ZIF-8. The textures of Fe3O4/ZIF-8/IL were confirmed by material characterization, and the results suggested that the adsorbent possessed high magnetism (59.0 emu g−1), an adequate Brunauer–Emmett–Teller (BET) surface area (104 m2 g−1), and a large pore volume (0.68 cm3 g−1). To confirm the extraction performance of the prepared Fe3O4/ZIF-8/IL, several experimental conditions affecting the extraction efficiency were investigated. Under the optimum conditions, the limits of determination (LODs) for the four pyrethroids were in the range of 0.0065–0.1017 μg L−1 (S/N = 3 : 1) with an intra-day relative standard deviation (RSD) of ≤9.70% and inter-day RSD of ≤11.95%. The linear ranges were 0.5–50 μg L−1 for bifenthrin and 0.5–500 μg L−1 for permethrin, cypermethrin, and flucythrinate, with determination coefficients higher than 0.999. Finally, the proposed technique was successfully applied for the determination of pyrethroids in real tea infusions. This work could be extended to other IL-modified metal–organic frameworks (MOFs) and to the development of different sample pretreatment techniques.
Electrification with Solar PV Technology and its Implication to Educational Outcome: Empirical Evidences from South Asia

Access to electricity is an essential component of modern life that enhances people’s living standard. We cannot sustain our comfortable lives without electricity. Increased electricity supply improves education, recreation, health, comfort, protection, and productivity. However, a significant portion of people – mainly concentrated in sub-Saharan Africa and South Asia – live every day without electricity. This scenario is a fundamental obstacle to the progress of a significant proportion of the world’s population and affects a wide range of development indicators, including health, education, food security, gender equality, livelihoods, and poverty alleviation. Firstly, this study examined the impact of grid electrification on school enrollment in Bangladesh in the short run as well as the long run. Secondly, the study investigated the impact of a solar home system on educational outcomes in rural Bangladesh. Thirdly, the study examined consumers’ preferences for an organic solar photovoltaic (PV) system based on a conjoint analysis in rural India.
Insights into the molecular basis of acetylcholinesterase inhibition by xanthones: an integrative in silico and in vitro approach

ABSTRACT Xanthones from natural and synthetic origins have shown interesting diverse pharmacological activities. This study aims to assess the in silico and in vitro activities of new synthetic xanthones as inhibitors of acetylcholinesterase enzyme (AChE). A series of eight new xanthones were designed and synthesised, using an in house strategy, from a readily available starting material. Their inhibitory activities against AChE were assessed in vitro and presented as IC50 values. The binding mode of these compounds inside AChE was investigated using Auto-Dock 4.2. 2. Additionally, molecular dynamics simulation was performed, using GROMACS 5.0. 2, to explore the dynamics of the inhibitory mechanism and stability of xanthone 5a within the active site of AChE enzyme. All xanthones showed promising activities when tested in vitro and in silico with xanthone 5a being the most potent in terms of both binding energy (−12.32 kcal/mol) and IC50 (0.20 ± 0.04 µM). Molecular dynamics simulation revealed several interesting features responsible for the potency of xanthone 5a as an AChE inhibitor. Furthermore, the calculated Log P of xanthone (5a) was found to be 6.56 suggesting it to be a potential drug candidate for the management of AChE associated diseases such as Alzheimer’s disease and myasthenia gravis.
In Vitro Toxic Effect of Biomaterials Coated with Silver Tungstate or Silver Molybdate Microcrystals

Purpose. This study evaluated the cytotoxicity of antimicrobial silver tungstate (Ag2WO4) or silver molybdate (Ag2MoO4) microcrystals coating biomaterials. Materials and Methods. The coating procedure was performed onto titanium, zirconia, and acrylic resin specimens. Eluates of the coated specimens were obtained, which were used for cytotoxicity analyses, including Alamar Blue, MTT, and CytoTox-ONE tests. Data were analyzed using two-way ANOVA, followed by the Tukey test (α = 0.05). The results of each experimental group were also compared to those of the control of living cells, taken as 100% cell viability. Results. In general, it was observed that the percentage of living cells from all biomaterials coated with both microcrystals was statistically different compared to the ones from the uncoated sample groups, except for the results from MTT of specimens of Ti coated with α-Ag2MoO4. All uncoated biomaterials were classified as noncytotoxic by the three assays used in the present study. It was observed that the microcrystals in solution were strongly cytotoxic, with death of almost 100% of cells, from the analysis of the results of the Alamar Blue assay. Conclusion. The most biomaterials coated with both microcrystals showed some degree of cytotoxicity in the different assays. The results described herein should be seen as an alert to the use of microcrystals, which can expose patients to health risks.
Cognitive Task Analysis Methods in Envisioned Tactical Command Decision Making

The battlespace is a volatile and complex environment in which tactical commanders face cognitively challenging responsibilities, compounded with the increased complexity of emerging cyber warfare. It is critical that tactical commanders gain adequate situation awareness for effective decision making to achieve mission success. While current tools enable distribution of large quantities and types of information, they do not adequately support the underlying cognitive work and information needs of tactical commanders. We performed a domain analysis using Cognitive Task Analysis methods, developing a prototypical operational scenario representative of current and envisioned environments, centered on a cyber-attack. Using this analysis, we identified cognitive and information requirements for information displays that support effective tactical decision making. Tactical commanders need to understand dynamic situations in the field, understand the viable courses of actions, know how their mission fits into the larger mission, and communicate with their company subordinates and higher echelons of command.
Dielectric Properties of Graphene Oxide Synthesized by Modified Hummers’ Method from Graphite Powder

Abstract Graphene oxide (GO) has been synthesized by modified Hummers’ method and characterized by Fourier transform infrared spectroscopy, ultraviolet visible spectroscopy, scanning electron microscopy, high resolution transmission electron microscopy, X-ray diffraction technique and Raman spectroscopy. GO characterized using Fourier transform infrared spectra shows that the graphite powder is strongly oxidized by resilient oxidants and the oxygen atoms are present in form of functional groups such as COOH, O–H, C–O–C, and C = O, bonds. GO pellets were prepared to study its dielectric properties as a function of frequency. Dielectric permittivity and electrical conductivity of GO strongly depends upon the extent of temperature.
Non-Parametric Anova Methods Applied on Students' Performance Development in Course of Statistics

This study intends to use non-parametric statistical methods for comparison of mean values in assessing the changes of overall grades in basic statistics at the College of Polytechnics in Jihlava. The data covering students' grades were transferred to the ordinal scale and evaluated with the use of the corresponding non-parametric statistical methods, due to failing the data normality test. In order to identify statistically significant grade differences over the years 2006–2018, we have used the test of equality of means as well as the relevant analyses of variance, i.e. the Mann-Whitney U test to compare two samples, the Kruskal-Wallis test to compare multiple samples, and the post hoc analysis. All tests that were carried out confirm that on average, women and Finance and Management students tend to achieve better grades in statistics, as opposed to men, and Travel and Tourism students. Mean grades have rather fluctuated over the years. In the beginning (2006–2009) and in the end (2014–2017) of the observed period the grades have been significantly superior to the grades in the in-between stage (2010–2013). The identified fluctuation in grades shall lead to implementation of measures aimed at achieving an overall increase in statistics' education quality and students' grades.
VALOR ACTUAL NETO Y TASA INTERNA DE RETORNO COMO PARÁMETROS DE EVALUACIÓN DE LAS INVERSIONES

Every investment is accompanied by yields, which can be measured by using appropriate tools for this purpose, the best known being the "Net Present Value" (NPV) and "The Internal Rate of Return" (IRR). The main reason for evaluating the profitability of an investment, be it private or social, must be determined in advance if it will generate profits for investors at the end of a certain predefined horizon of time. Both tools are reliable but in the event of a doubt, the VAN will be chosen. This paper aims to evaluate the profitability of the production of cocoa paste in the province of Guayas, Canton Naranjito, parish "Roberto Astudillo" in the Republic of Ecuador, according to the initial investment introduced in the production. These are small companies, many of them familiar and of cultural and social importance. To achieve this objective, the NPV and the IRR of these companies will be calculated and the future financial behavior will be forecast. KEYWORDS : Net Present Value, Internal Rate of Return, forecasting, interpolation, extrapolation MSC : 91G60, 91B82, 97M30
Effect of education on self-efficacy of Turkish patients with chronic obstructive pulmonary disease

This study was designed to compare the effect of structured education on self-efficacy in patients with chronic obstructive pulmonary disease (COPD). The study was carried out with an experimental group on which a structured education was provided, and a control group on which only educational advice was provided. There were 30 patients in both groups. Control and experimental group measurements were obtained on the COPD Self-Efficacy Scale (CSES). There was a significant difference between control group and experimental group scores on the CSES. Self-efficacy, as it affects managing or avoiding breathing difficulty, was measured before and after the structured education program and the nursing care. Patients’ self-efficacy scores significantly improved after the structured education and remained significantly improved 1-month later. Standard nursing care alone was also effective in significantly improving self-efficacy scores, but patients’ scores 1-month later were not significantly better than pre-program scores. This study indicates that a planned education program that is more effective in improving self-efficacy in patients with COPD. © 2003 Elsevier Ireland Ltd. All rights reserved.
Electrophoresis in dilute polymer solutions

We analyse the electrophoresis of a weakly charged particle with a thin double layer in a dilute polymer solution. The particle velocity in polymer solutions modelled with different constitutive equations is calculated using a regular perturbation in the polymer concentration and the generalized reciprocal theorem. The analysis shows that the polymer is strongly stretched in two regions, the birefringent strand and the high-shear region inside the double layer. The electrophoretic velocity of the particle always decreases with the addition of polymers due to both increased viscosity and fluid elasticity. At a small Weissenberg number ($Wi$), which is the product of the polymer relaxation time and the shear rate, the polymers inside the double layer contribute to most of the velocity reduction by increasing the fluid viscosity. With increasing $Wi$, viscoelasticity decreases and shear thinning increases the particle velocity. Polymer elasticity alters the fluid velocity disturbance outside the double layer from that of a neutral squirmer to a puller-type squirmer. At high $Wi$, the strong extensional stress inside the birefringent strand downstream of the particle dominates the velocity reduction. The scaling of the birefringent strand is used to estimate the particle velocity.
Computational Design of New Analogues from Lyngbyastatin-2 against Epidermal Growth Factor Receptor (EGFR) through Molecular Docking

Cyanobacteria are considered as a rich source of secondary metabolites with potential applications in oncology to find out new therapeutic agents to suppress cancer. Lyngbyastatin-2 is a secondary metabolite from marine cyanobacteria and has antimicrobial and anticancer properties. It acts as an inhibitor molecule against cancer cells. In the present study, Lyngbyastatin-2 a bioactive compound from Lyngbya majuscula was selected as a ligand and four types of analogues were prepared using ChemDraw software. These analogues docked with Epidermal Growth Factor Receptor (EGFR), which is key molecule play a major role in ovarian cancer using Hex 8.0. 0 molecular docking method. Among 4 analogues tested, Lyngbyastatin-2 analogue-1 (L2A1) showed high energy bonding (-618.27 KJ/mol) with EFGR molecule and considered as an effective inhibitor Original Research Article Vijayakumar et al.; JPRI, 31(6): 1-10, 2019; Article no.JPRI. 53967 2 molecule to treat ovarian cancer based on e-values. A strong chemical interaction observed between EGFR protein and L2A1 ligand molecules and it may be leads to improve the efficiency of inhibitor. This study is the first attempt to analyze the analogues of lyngbyastatin-2 with EGFR and further in vitro, in vivo studies are required to prove its anticancer potential against ovarian cancer based on the predictions of in-silico studies.
Electrode and symmetric supercapacitor device performance of boron‐incorporated reduced graphene oxide synthesized by electrochemical exfoliation

Boron‐incorporated reduced graphene oxide (B‐rGO) is synthesized via novel single‐step potentiostatic exfoliation at 3 V vs Ag/AgCl employing (NH4)2SO4 + B(OH)3 electrolyte for supercapacitor applications. Structural characterization is performed by XRD, Raman, XPS, VB, SEM, TEM, and BET analysis. Eventually, B‐rGO synthesis scheme is proposed. The electron‐deficient B causes p‐doping in B‐rGO forming BCO2, BC2O, and BC3 (XPS), redshift of 2D band (Raman) and blue shifts in C 2p‐π peaks and Ef in VB. B‐rGO exhibits specific capacitances (Csp) of 446 F g−1 at 0.1 A g−1 and 284 F g−1 at 20 A g−1 in 6 M KOH. Upon 2000 charge/discharge cycles at 5 A g−1, 95.6% capacitance is retained. B‐rGO gives energy and power densities of 25.2 W h kg−1 and 8064 W kg−1 at 20 A g−1. The remarkably high energy density of B‐rGO is attributed to p‐doping effect. B‐rGO exhibits superior performance, compared with rGO synthesized from (NH4)2SO4. A symmetric B‐rGO supercapacitor device is fabricated and exhibits Csp of 120 F g−1 at 0.1 A g−1. At 20 A g−1 the energy and power densities are 6.45 W h kg−1 and 8000 W kg−1, respectively. The device retains 89.8% capacitance upon 2000 charge/discharge cycles.
The relevance of mixed methods for network analysis in tourism and hospitality research

Taking stock of extant hospitality and tourism research using social network analysis approaches, this study highlights why using either quantitative or qualitative approaches to examine social networks can be misleading and generate potentially biased findings. Indeed, purely qualitative and purely quantitative studies display limitations. The purpose of this study is to provide methodological insights by suggesting that mixed methods can be suitably used, depending on the specific research questions. ,The study consists of an analysis and critical discussion of the methods used in a number of papers leveraging social network approaches to study social networks in tourism and hospitality. The authors describe the benefits and limitations of each method studies considered are examined based on a number of aspects. ,More than half of the studies classified as network studies adopt quantitative designs and quantitative methods including statistical analyses and observational data. Mixed methods study is a minority and they are almost never labeled as mixed methods. A relevant portion of qualitative studies increasingly embeds a number of rudimentary statistical analyses. With an example, the authors also discuss that purely quantitative or purely qualitative methods can lead to discrepant results, and thus, the authors encourage scholars to embrace mixed method research designs such as explanatory or exploratory sequential designs. Advanced researchers might attempt in the future to embrace transformative, embedded or multiphase mixed methods. ,This study is based on academic papers and research published before 2019. A rich research agenda is designed. ,This study contributes to explore the way social networks have been dealt with in tourism and hospitality research so far, by advancing a proposal to adopt mixed methods in the form of explanatory or exploratory sequential designs. To the best of the knowledge, it is the first study addressing methodological pitfalls in extant network-based research within the tourism and hospitality domain.