Miracle-dz/UniFAR-FTUs huggingface dataset:
Controlled Mesoporosity in SiOC via Chemically Bonded Polymeric “Spacers”

Silicon oxycarbides with controlled porosity in the mesopore range have been obtained through high-temperature pyrolysis of newly developed reactive siloxane formulations. The starting gels have been synthesized via Pt catalyzed hydrosilylation reaction between polyhydromethylsiloxane (PHMS) and vinyl-terminated polydimethylsiloxane (PDMS) of different molecular weights in the presence of tetravinyltetramethylcyclotetrasiloxane as a crosslinking enhancer. In our approach, the PDMS serves the double purpose of size-controlling templating agent as well as solvent at the early stages of the synthesis. During the curing step, the vinyl-terminated PDMS is chemically bonded to the preceramic network through the extremely efficient hydrosilylation reaction and “solidify. ” Accordingly, its removal during pyrolysis occurs through decomposition of a solid phase with retention of the formed porosity. The structural and morphological evolution of the preceramic gels containing the molecular spacers have been investigated as a function of the thermal treatment temperature by N2 physisorption measurements, thermogravimetry, and SEM analyses. The results show that the pore size distribution of the resulting SiOCs depends on the molecular weight of the PDMS and is directly related to the molecular volume assumimg that the PDMS chains are entangled into spheroidal shapes. The total pore volume is related to the initial amount of templating PDMS assuming its complete decomposition during pyrolysis.
Mathematical Model for Analysis of Uniaxial and Biaxial Reinforced Concrete Columns

This paper presents a mathematical model for the analysis of reinforced concrete (RC) uniaxial and biaxial columns. This proposed model is a quick and faster approach for the analysis and design of reinforced concrete rectangular columns without going through the interaction charts procedure as well as other iterative methods for the computation of required axial load capacity (Pc) and moment capacity (Mc). A simplified flow chart has also been developed to find the required column capacity using this mathematical model. Eight uniaxial columns (C-1 to C-8) and seven biaxial columns (CB-1 to CB-7) are analysed in this study. Each column is analysed having different steel reinforcement ratios ρ with different loading conditions. In addition, the studied columns are subjected to both tension and compression failures. The detailed examples for both uniaxial and biaxial columns (one for each case) are also presented in this study. The studied columns are also analysed using computer software spColumn. The average variation of the mathematically computed values to the finite element software is not more than 10%, showing promising computational results.
Computational Fluid Dynamics Modelling to Predict Axial Dispersion in Pulsatile Liquid-liquid Two-phase Flow in Pulsed Sieve Plate Columns

ABSTRACT Computational Fluid Dynamics (CFD) is used to predict continuous phase axial dispersion coefficient for liquid-liquid two-phase flow in a pulsed-sieve plate column (PSPC). The CFD model is based on Euler-Euler model in which the drop diameter used in the interphase momentum exchange term is obtained by coupled solution of the population balance equations. Species transport is additionally solved for the continuous phase to obtain its residence time distribution (RTD) curve which is further processed to estimate axial dispersion coefficient of the continuous phase. Experimental studies are also conducted in a 3-inch diameter PSPC to obtain axial dispersion coefficient in the continuous phase for different operating conditions. The continuous phase is water. 30% (v/v) tributyl phosphate mixed in dodecane is the dispersed phase. Validation of the CFD model is done with the experimental data of axial dispersion coefficient of the continuous phase. The average absolute relative error between estimated and predicted axial dispersion coefficient of continuous phase is less than 3%. The validated model is used to understand two-phase hydrodynamics in the column.
Perceptions of type-II diabetes patients about the support sources for their disease: A qualitative study to access support sources in deprived regions

Arezoo Shahsavari School Of Nurisng And Midwifery,Shahid Beheshti University https://orcid.org/0000-0001-9477-1778 Fatemeh Estebsari (  fa_estebsari@yahoo.com ) School Of Nurisng And Midwifery,Shahid Beheshti University https://orcid.org/0000-0001-7011-8731 Foroozan Atashzadeh-Shoorideh Shahid Beheshti University of Medical Sciences School of Nursing and Midwifery Mahnaz Ilkhani Shahid Beheshti University of Medical Sciences School of Nursing and Midwifery
Effects of a Theatrical Improvisation programme on students’ motor creativity

ABSTRACT The goal was to assess the effects of a Theatrical Improvisation programme on students’ motor creativity. 163 Secondary Education students participated: the experimental group, who experienced a Theatrical Improvisation unit, and the comparison group, who experienced a Drama in Education unit (based on the current Spanish educational law). A pretest, posttest, quasi-experimental, comparison group design was followed. Results showed that the students who experienced Theatrical Improvisation increased significantly more the four dimensions of motor creativity (Fluency, Flexibility, Imagination, Originality) assessed. Creative programmes based on Theatrical Improvisation are interesting to progressively push towards the needed global educational change.
Neutron-diffraction study on the orientation of hydroxyl groups in margarite

The crystal structure of margarite 2M1 was refined in space group Cc from neutron and X-ray data on a crystal from Greiner, Zillertal, Austria, a= 5.108(1) A, b = 8.844(2)A, c= 19.156(3) A, P= 95.48(2)". Almost complete Si/ Al ordering was found for the tetrahedral position. The hydroxyl group exhibits two different orientations: one is close to those commonly found in dioctahedral and the other to those characteristic of trioctahedral micas. About 79 % of the 0- H bonds are located in the first orit entation, whereas 21 % are found in the second. The second orientation agrees with a cationic occupation of about 21% in the M(1) site in the struct ure of the Zillertal margarite.
Social entrepreneurship competency: an approach by discipline and gender

PurposeThe purpose of this study is to analyze how university men and women in different disciplines of study in Mexico perceive social entrepreneurship competencies, using a multifactorial analysis to find possible areas of opportunity to reduce the gender gap in social-entrepreneurship-project proposals.Design/methodology/approachThis is a quantitative study with a validated questionnaire that records the perception levels of five social entrepreneurship subcompetencies. The survey, which includes 28 indicators, was applied to 140 university students from different disciplines. Hypothesis testing was applied to identify significant differences between men and women in each subcompetency by disciplinary area.FindingsIn the global sample, significant differences by gender were observed only in the social value subcompetency. In the disciplinary analysis, significant differences were found in architecture and design, business, and engineering and science.Research limitations/implicationsThe questionnaire only gathered data about the students' perceptions. To the extent that perception is triangulated with other instruments, it is possible to increase knowledge regarding how to train in social entrepreneurship.Practical implicationsThe results can be useful for university training and increasing the envisioning and formulating of government projects by young people who create new businesses.Originality/valueThis research contributes to the literature on the role of gender-specific perceptions of social entrepreneurship in Mexico.
Systematic characterization of low-pressure capacitively coupled hydrogen discharges

This paper presents a systematic characterization of pure hydrogen capacitively coupled discharges, produced in a parallel plate cylindrical setup. A two-dimensional, time-dependent fluid model is used to describe the production, transport, and destruction of electrons and positive ions H+, H2+, and H3+, at different frequencies (13.56–60 MHz), pressures (0.2–8 Torr), rf applied voltages (50–450 V) and geometric dimensions (1.6–12.8 cm radii and 1.6–6.4 cm interelectrode distances). A good agreement is found between calculation results and experimental measurements for the coupled electrical power, the plasma potential, and the self-bias potential, at various frequencies and rf applied voltages. However, the model generally underestimates the electron density with respect to its measured values. The paper discusses different space-time events, such as the development of double-ionization structures or the occurrence of field inversion and field reversal phenomena. The dependencies on pressure and frequenc.
Ethnic Differences in Spermatozoa Morphological Defects Diversity Among Men From Eastern Siberia, Russia

Background.Sperm morphology defects are considered to indicate several spermiogenesis anomalies, resulting in decreased men fertility, causing not only poor sperm morphology but also increased DNA fragmentation, chromatin condensation defects, increased oxidative stress. Consequently, detailed assessment of sperm morphological abnormalities in additional to counting percentage of sperm with normal morphology may be useful for andrologists and reproductive biologists. However, a little attention is paid to studying a regional and especially ethnic variability in the incidence of the sperm morphology defects. The aim of this research was to estimate ethnic variability in percentages of the sperm morphology abnormalities in men from general population living in the Siberian region of the Russian Federation.Methods. Male volunteers of Buryat (n=195), Yakut (n=130), and Slavic (n=89) ethnicity from the general population from Ulan-Ude and Yakutsk at least 5 years were enrolled in the study. Percentages of sperm morphological defects (according to the classification provided by the WHO laboratory manual, 2010) are counted after staining native ejaculate smears by Diff-Quick kits. Results.Among sperm defect, amorphous (62.25±12.18%), elongated (10.61±8.62%), pyriform(8.61±9.17%), and vacuolated heads (10.31±6.77%), abnormal acrosome (20.43±12.67%), asymmetrical insertion neck (18.33±6,43%), thick midpiece (6.21±3,41%), bent head (5.94±4,02%) and coiled tail (10.8±6.79%) were most frequent. In comparison with Buryats, Slavs and Yakuts were characterized by the decreased proportion sperm with normal morphology, the increased proportion of pyriform, elongated heads, abnormal acrosome, asymmertical tail insertion, excessive residual cytoplasm and increased teratozoospermia index (TZI). It was shown that impared progressive sperm motility and concentration associated with decreased percentage of sperm with normal morphology and increased proportion most of sperm morphology defects and TZI. However, increasing TZI in men with oligoastenozoospermia compared to men with astenozoospermia was revealed for Buryats only, suggesting ethnic features in the relationships between sperm morphology and concentration.Conclusion. The present study showed significant coordinated ethnic variability in the percentages of several sperm morphological defects in men from the general population located in Eastern Siberia. Damaged spermiogenesis processes underlying sperm head elongation and tail formation is considered to be significant contributors to geographical and ethnic variability of sperm morphology in men from the studied populations.
MICROSCOPIC INVESTIGATION OF THE ONSET OF ASPHALTENE PRECIPITATION

ABSTRACT A microscopic study of the onset of asphaltene precipitation is reported. The onset conditions can be quantified by measurement of mixture refractive index, together with microscopic observations of particulate formation in mixtures of oil and precipitant, with or without added solvents. For isooctane mixtures with a variety of hydrocarbon solvents and a crude oil from Alaska, the onset of precipitation occurs over a narrow range of solution refractive index. Addition of polar solvents or different precipitating agents can shift the refractive index at which precipitation begins. Refractive index decreases when a crude oil is diluted by precipitant, as in this study, or when changes in temperature and pressure alter the relative molar volumes of species in the oil. If it falls below some critical value, resin/asphaltene aggregates that had been in stable dispersion become unstable and precipitate. These observations provide a method of screening solvents to differentiate between those that preven.
The Path from Leader-Member Exchange to Citizenship: An Empirical Test of Self-Determination as a Linchpin

In response to calls to uncover the mechanisms whereby leadership influences subordinate outcomes, the present studyproposes and tests a path from leader-member exchange (LMX) to subordinate organizational citizenship behaviors(OCBs) through work motivation as conceptualized by self-determination theory (SDT). We conducted a survey studyon a Romanian sample of 338 subordinates nested under 59 leaders from a large variety of organizational contexts. Ourfindings at the within-group level offer limited support for the incremental validity of autonomous motivation andamotivation, but suggest controlled motivation—and, through it, LMX—has a negative incremental contribution to bothOCB targeted at co-workers and OCB targeted at the organization. None of the paths was supported at group level.Results thus suggest that leaders should be wary of the consequences of high LMX—despite its established overallpositive influence on OCB, LMX may also undermine OCB to the extent to which it enhances controlled motivation.
The Role of an Indian Ocean Heating Dipole in the ENSO Teleconnection to the North Atlantic European Region in Early Winter during the Twentieth Century in Reanalysis and CMIP5 Simulations

In this study the role of an Indian Ocean heating dipole anomaly in the transition of the North Atlantic–European (NAE) circulation response to El Niño–Southern Oscillation (ENSO) from early to late winter is analyzed using a twentieth-century reanalysis and simulations from phase 5 of the Coupled Model Intercomparison Project (CMIP5). It is shown that in early winter a warm (cold) ENSO event is connected through an atmospheric bridge with positive (negative) rainfall anomalies in the western Indian Ocean and negative (positive) anomalies in the eastern Indian Ocean. The early winter heating dipole, forced by a warm (cold) ENSO event, can set up a wave train emanating from the subtropical South Asian jet region that reaches the North Atlantic and leads to a response that spatially projects onto the positive (negative) phase of the North Atlantic Oscillation. The Indian Ocean heating dipole is partly forced as an atmospheric teleconnection by ENSO, but can also exist independently and is not strongly related to local Indian Ocean sea surface temperature (SST) forcing. The Indian Ocean heating dipole response to ENSO is much weaker in late winter (i.e., February and March) and not able to force significant signals in the North Atlantic region. CMIP5 multimodel ensemble reproduces the early winter Indian Ocean heating dipole response to ENSO and its transition in the North Atlantic region to some extent, but with weaker amplitude. Generally, models that have a strong early winter ENSO response in the subtropical South Asian jet region along with tropical Indian Ocean heating dipole also reproduce the North Atlantic response.
When Residential Energy Labeling Becomes Irrelevant: Sustainability vs. Profitability in the Liberalized Chilean Property Market

The study of the relevance of energy efficiency attributes on residential choices is usually based on stated preferences, using performance indicators. However, this issue has not been researched in developing countries, where energy certification schemes have a low adoption rate. This article paper uses a methodology based on a Kansei Engineering and Kano Model to identify home buyers’ energy performance perceptions in three real estate developments in Santiago de Chile. Surprisingly, energy ratings negatively affected the survey respondents’ willingness to buy. On the other hand, the ratings indicated that the most relevant attribute for influencing the purchasing is the perception of the home as a good investment. This finding contradicts most of the studies on energy certification and shows the relevance given to the profit of purchasing new housing units. Therefore, the analyses suggest that this situation represents a decoupling of consumer perception from both the items measured by energy labels and their contribution to consumer choices.
KNOWLEDGE AND ATTITUDES TOWARD PEOPLE WITH DEMENTIA AMONG NURSING STUDENTS IN YOGYAKARTA, INDONESIA

Background: Nursing students are prepared to deliver care for vulnerable people, including people with dementia. Nursing students tend to have lower levels of knowledge and attitudes toward dementia compared to registered nurses. While there is less evidence that discussed this topic in the Indonesian nursing student's context, it will be necessary to identify an aspect related to knowledge and attitude among students to be considered for improvement in the future.Objective: This study aimed to identify the knowledge and attitudes toward dementia among nursing students in Indonesia.Method: This study was a quantitative study with a cross-sectional design. There were 334 nursing students recruited using a total sampling method at Universitas Gadjah Mada, Yogyakarta. Data were collected using the Dementia Knowledge Assessment Scale (DKAS) and Dementia Attitude Scale (DAS). Spearman Rank, Mann Whitney Unpaired, Kruskal-Wallis test, Pearson Correlation, Unpaired t-test, and Unpaired ANOVA were used for data analysis according to the type and the distribution of the data.Results: The median of the DKAS was 24 (min - max = 7 - 40), and the mean of DAS was 99.60 (SD = 10.25). The variables that were statistically significant correlated to knowledge of dementia were age (r = .332, p < .001), class standing (H = 72.253, p < .001), and experience in taking care of people with dementia (U = 3314, p = .047). Meanwhile, only the age of the students was found to have a statistically significant correlation with attitudes toward dementia (r = 158, p = .004). Conclusion: In general, among the nursing students, knowledge toward dementia was relatively low, while the attitudes toward dementia were relatively high compared to other research. Age, class standing, and experience in taking care of people with dementia had significant correlations to the knowledge score of the students. Lastly, age also had a significant correlation with the attitude score of the students.
Intramolecular N–H⋯O hydrogen bonding assisted by resonance. III. Structural studies of 1-ketone-2-arylhydrazone derivatives

The crystal and molecular structures of the following 1-ketone-2-arylhydrazones have been determined: (1) 4-(phenylhydrazono)-3-methyl-4H-isoxazol-5-one, C 10 H 9 N 3 O 2 , M r =203.2, monoclinic, C2/c, a=11.100 (3), b=7.960 (2), c=21.744 (4) A, β=95.82 (2) o , V=1911.3 (8) A 3 , Z=8, D x =1.41 Mg m -3 , λ(Mo Kα)=0.71069 A, μ=0.096 mm -1 , F(000)=848, T=295 K, R=0.040 for 1737 observed reflections;
Geomorphological evolution of the Petrovaradin Fortress Palaeolithic site (Novi Sad, Serbia)

Abstract Two phases of archaeological investigation were performed in the Novi Sad City Museum at Petrovaradin Fortress. In this study, we summarize the results of geo-archaeological investigations of the second period of excavation inside the Novi Sad City Museum building. The fortress is situated on a Danube terrace with the top of the bedrock at ca.123 m asl. The investigated section consists of undisturbed fine-sandy silt. The grain-size distribution of the sediments indicates clearly its alluvial reworking but shows also a general similarity with typical primary loess in the region. All analyzed proxies indicate slightly stronger weathering in the upper part of the profile. Luminescence ages suggest that the investigated sequence covers the last glacial period and the terrace presumably formed during MIS 4. Subsequently, the Danube started its incision at the start of the next warmer period (MIS 3) onward. This terrace age and elevation enable us to derive an uplift rate of the terrace of ca. 0.73 mm/a for the last 60 ka, which seems to increase towards the present. Basal loessic material, in which artifacts occur, likely in the reworked position, indicate that the area close to today's Petrovaradin Fortress was already inhabited in MIS 5.
High‐dimensional data classification model based on random projection and Bagging‐support vector machine

Aiming at the long training time when classifying high‐dimensional data, a parallel classification model is proposed based on random projection and Bagging‐support vector machine (SVM) to process high‐dimensional data. The model first uses random projection to project the input data into the low‐dimensional space. Then, we used the Bagging method to construct multiple training data subsets and used SVM to train the training subset in parallel and generate several subclassifiers. Finally, various classifiers vote to determine the category of the test sample. The model has been verified using two standard datasets. The experimental results show that the model can significantly improve the training speed and classification performance of high‐dimensional data with little accuracy loss.
The Extraordinary Relationship between Peacekeeping and Peace

Abstract Numerous empirical studies have examined the role of third-party peacekeeping in reducing violence around the world. Their results reveal an extraordinary relationship between peacekeepers and peace, notwithstanding a number of well-known problems. This review article has three goals. The first is to summarize the results of past empirical research to move the debate beyond the question of whether peacekeeping works to the more pressing questions of how, when and why it works. The second is to reveal the limitations of the current quantitative research in order to identify areas in which scholars can make big, new contributions to the field. The final goal is to propose a new research agenda that is heavily evaluative – one that informs policy makers about the specific practices, mission compositions, and mandates that work, and identifies the local, regional, and international conditions that amplify or diminish peacekeeping's effectiveness. This type of research could help reduce the costs of peacekeeping operations, eliminate some of the negative consequences of interventions and save even more lives.