Miracle-dz/UniFAR-FTUs huggingface dataset:
SYNTHESIS AND ANTICONVULSANT ACTIVITY OF N-SUBSTITUTED-7-HYDROXY-4-METHYL-2-OXA-QUINOLINE DERIVATIVES

The reaction of resorcinol with ethyl acetoacetate yielded the 7-hydroxy-4-methyl coumarin, which on treatment with substituted thiadiazole in presence of glacial acetic acid gives 7-hydroxy-4-methyl-1-5-phenyl-1,3,4-thiadiazole-2yl,qinoline-2(1H)-one. Purity of synthesized compound was checked by TLC and structures were elucidated by their IR, 1H NMR and elemental analysis data. The synthesized compounds were screened for anticonvulsant activity. Keywords Quinoline-2(1H)-one derivative, Resorcinol, Glacial acetic acid, Anticonvulsant activity.
A study of gestational diabetes

Diabetes mellitus is a growing problem, especially in developing countries. People suffering from diabetes have an increased risk of developing a number of serious health problems. Consistently high blood glucose levels can lead to serious diseases affecting the heart and blood vessels, eyes, kidney, etc. In addition, people with diabetes also have a higher risk of developing infections. This paper aims to use suitable data mining and classification techniques which include the Logit model, the Probit model, the Classification tree technique, Artificial Neural Networks, Support Vector Machines, Ridge Regression technique and the Least Absolute Shrinkage and Selection Operator(LASSO) in order to determine the best method which can be used to classify the patients as suffering from gestational diabetes or not. The misclassification rate is calculated for different methods and the method having the least misclassification rate is said to be the most suitable to be applied to the given data, which is the PIMA Indians diabetes dataset.
Machine learning approach for reducing students dropout rates

School dropout is a widely recognized serious issue in developing countries. On the other hand, machine learning techniques have gained much attention on addressing this problem. This paper, presents a thorough analysis of four supervised learning classifiers that represent linear, ensemble, instance and neural networks on Uwezo Annual Learning Assessment datasets for Tanzania as a case study. The goal of the study is to provide data-driven algorithm recommendations to current researchers on the topic. Using three metrics: geometric mean, F-measure and adjusted geometric mean, we assessed and quantified the effect of different sampling techniques on the imbalanced dataset for model selection. We further indicate the significance of hyper parameter tuning in improving predictive performance. The results indicate that two classifiers: logistic regression and multilayer perceptron achieve the highest performance when over-sampling technique was employed. Furthermore, hyper parameter tuning improves each algorithm's performance compared to its baseline settings and stacking these classifiers improves the overall predictive performance.
Affective and Discursive Outcomes of Symbolic Interpretations in Picture-Based Counseling: A Skin Conductance and Discourse Analytic Study

ABSTRACT The relationship between symbolic expression and affect tends to be investigated from the perspective of recipients in contexts like media, politics, and advertising. A more producer-centric context is picture-based counseling (PBC) where clients are prompted by counselors to interpret pictures creatively as part of the treatment process. Nevertheless, the affective and discursive outcomes of these interpretations remain poorly understood. This paper reports a combined experimental and discourse analytic study which compares prompting strategies in terms of affective engagement, contrasts the discourse characteristics of interpretations following “topic-present” and “topic-absent” prompting strategies, and offers potential implications for PBC practice. Analysis of skin conductance levels suggests that the two prompting strategies which invite symbolic interpretation are more affectively engaging than the literal control (F(2,32) = 6.356, p = . 005), but not significantly different from each other. A follow-up discourse analysis revealed the prominence of metaphors in symbolic interpretations, as well as nuanced differences between the discourse outcomes of prompting strategies. Topic-present interpretations tended to produce more systematic ensembles of metaphorical expressions, while topic-absent interpretations were less systematic. The combined findings suggest that orienting clients towards symbolic interpretation is affectively engaging, but the ideal prompting strategy is best determined by context-specific circumstances to be judged by counselors.
The spatial scale dependence of diazotrophic and bacterial community assembly in paddy soil

Author(s): Gao, Q; Yang, Y; Feng, J; Tian, R; Guo, X; Ning, D; Hale, L; Wang, M; Cheng, J; Wu, L; Zhao, M; Zhao, J; Wu, L; Qin, Y; Qi, Q; Liang, Y; Sun, B; Chu, H; Zhou, J | Abstract: © 2019 John Wiley a Sons Ltd Aim: The factors driving microbial community β-diversity (variation in composition) at different spatial scales yield fundamental insights into the mechanisms that maintain ecosystem biodiversity, which as yet are uncertain. Here, we explore whether spatial scale-dependent patterns of β-diversity vary between microbial functional groups and bacterial taxa (i.e., diazotrophic and bacterial communities) across local to regional scales (from metres to hundreds of kilometres). Location: Eastern China. Time period: October and November 2015. Major taxa studied: Diazotrophic and bacterial communities. Methods We use two complementary statistical tools to unveil biotic mechanisms (i.e., species association) underlying variation in β-diversity of diazotrophic and bacterial communities. We examined distance–decay slopes of both communities at the local (1–113 m), meso- (3.4–39 km) and regional (103–668 km) scales. We used an environmentally constrained checkerboard score and topological features of association networks as indices of species association. We then calculated contributions of species association, abiotic factors and geographical distance to explain community β-diversity. The scale-dependent distance–decay relationships were also examined in ubiquitous (high occupancy across samples) and endemic communities of diazotrophs and bacteria. Results Diazotrophs displayed steeper distance–decay slopes than bacteria, suggesting that the β-diversity of diazotrophic communities was more variable. The distance–decay slopes were dependent on spatial scales in both communities, owing to different contributions of geographical distance, abiotic factors and species association at three spatial scales. Intriguingly, species association was greater and contributed more to community β-diversity than other forces at the local scale, implying that species association could greatly alter community structures. Main conclusions Drivers of diazotrophic and bacterial community β-diversity depended on spatial scales, resulting in different distance–decay patterns. Moreover, this was the first study to use two methods to demonstrate that species association played important, but as yet unrecognized, roles in driving spatial scale-dependent β-diversity.
POINT CLOUD DATASET AND FEM FOR A COMPLEX GEOMETRY: THE SAN LUZI BELL TOWER CASE STUDY

Abstract. Detailed three-dimensional reconstruction of heritage objects is crucial for different purposes, such as analysis, preservation and maintenance, among others. Geomatics techniques allow acquiring complex and comprehensive information about geometry and current conditions of the surveyed objects in a short time, which is a great advantage for documentation and historical archives. The reconstruction of three-dimensional models is often performed using either image-based techniques, mainly Close Range Photogrammetry (CRP), including Structure from Motion approaches (SfM), or range-based techniques, such as Terrestrial Laser Scanning (TLS). These approaches have been widely applied in the field of Cultural Heritage to support multidisciplinary studies, from simple documentation to the monitoring of historical buildings, in restoration works or for structural analysis checks.The present paper aims at exploring the potential contribution of Geomatics to Structural Engineering, by investigating capabilities and advantages of TLS for a vertical structure. The experiments presented herein were carried out in a notable case study, the San Luzi church, located in Zuoz (Switzerland) in the Upper Engadin. Its bell tower is about 60 m high and is equipped with four bells. Strong vibrations caused by the ringing of the bells have been observed in the past, and a structural model was desired to enable numerical evaluations of the response of the tower to various load situations by FEM.
A Case Report of Seronegative Limbic Encephalitis

Most patients with autoimmune encephalitis do not present with well-described symptoms. Demographic data and information regarding co-morbidities could help in diagnosing the underlying disorder, but a definitive diagnosis is made by the result of autoimmune antibodies. Limbic encephalitis (LE), a variant of autoimmune encephalitis, is the inflammation of the limbic system of the brain. The disorder presents with the rapid development of confusion, working memory impairment, mood changes, and often seizures. LE could have paraneoplastic or non-paraneoplastic etiology. We present the case of a 15-year-old girl with seronegative LE, who presented with cognitive decline and seizures. This condition is rare, and therefore poses a great challenge in diagnosis at an early stage.
Covolume Solutions of Three-Dimensional Div-Curl Equations

The Voronoi--Delaunay mesh systems provide a generalization of the classical rectangular staggered meshes to unstructured meshes. In this work, it is shown how such "covolume" discretizations may be applied to div-curl systems in three dimensions. Error estimates are proved and confirmed by a numerical illustration.
On the rigid-lid approximation of shallow water Bingham

This paper discusses the well posedness of an initial value problem describing the motion of a Bingham fluid in a basin with a degenerate bottom topography. A physical interpretation of such motion is discussed. The system governing such motion is obtained from the Shallow Water-Bingham models in the regime where the Froude number degenerates, i.e taking the limit of such equations as the Froude number tends to zero. Since we are considering equations with degenerate coefficients, then we shall work with weighted Sobolev spaces in order to establish the existence of a weak solution. In order to overcome the difficulty of the discontinuity in Bingham's constitutive law, we follow a similar approach to that introduced in [G. DUVAUT and J.-L. LIONS, Springer-Verlag, 1976]. We study also the behavior of this solution when the yield limit vanishes. Finally, a numerical scheme for the system in 1D is furnished.
The Visegrád Group Countries’ Ratings – Do the Credit Rating Agencies Make the Decisions Independently or Piggyback Themselves?

The paper addresses a few questions connected with actions taken by main CRAs in relation with ratings of Visegrad Group Countries. In particular it focuses on settlement: If all CRAs are independent or follow the opinions of their competitors, whether there is one leader that in case of all analyzed countries as the first one communicates change of its opinion or at least the frequency of being the leader in all countries is the biggest, if there is relation between the behavior of the respective credit rating agency and number of rating actions taken by this agency.
Evaluation of Imazaquin for Weed Control in Flue-Cured Tobacco (Nicotiana tabacum)

Imazaquin {2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} was evaluated in the field for weed control in flue-cured tobacco (Nicotiana tabacum L.) during 1983 and 1984. The 75 DG formulation of imazaquin was used at 0.28 and 0.42 kg ai/ha. Methods of application were: preplant incorporated, over the top immediately after transplanting, postbed incorporated, and early postemergence. Imazaquin controlled 90%, or better, of common lambsquarters (Chenopodium album L. # CHEAL), common ragweed (Ambrosia artemisiifolia L. # AMBEL), redroot pigweed (Amaranthus retroflexus L. # AMARE), spiny amaranth (Amaranthus spinosus L. # AMASP), ivyleaf morningglory [Ipomoea hederacea (L.) Jacq. # IPOHE], sicklepod (Cassia obtusifolia L. # CASOB), and prickly sida (Sida spinosa L. # SIDSP) with all application methods except early postemergence. It controlled 80 to 89% of large crabgrass (Digitaria sanguinalis L. # DIGSA) by the soil-applied methods. Postemergence applications of imazaquin controlled common ragweed, pigweed spp. , ivyleaf morningglory, prickly sida, and sicklepod. Imazaquin was less effective postemergence on lambsquarters and large crabgrass. Tobacco tolerated use of imazaquin by all methods of application except preplant incorporation.
RADIATION FROM PERFECT MIRRORS FOLLOWING PRESCRIBED RELATIVISTIC TRAJECTORIES

The question is examined of a mirror which starts from rest and either (i) accelerates for some time and eventually reverts to motion at constant velocity, (ii) continues accelerating forever. A sharp distinction in made between cases (i) and (ii) concerning the spectrum of the emitted radiation, and the qualitative difference between the two cases is pointed out. The Bogolubov coefficients are calculated for a trajectory of type (i). A type (ii) trajectory is entirely unphysical as far as any realistic mirror is concerned, however it is of interest in that it has been used as a simple analog of black hole collapse. The spectrum emitted for the type (ii) trajectory z = -ln (cosh t) is examined and it is shown that it is indeed that of a black body. Inconsistencies in previous derivations of the above result are pointed out.
Setting the stage for children’s participation in worship practices

ABSTRACT How children participate in worship practices is largely determined by adults. Adults set the stage; they shape the physical environment and determine the subject matter. Adults design the format for children’s participation in various forms of worship and the roles adults perform influence the interactions with children. Many different intentions inform these design choices and roles: Intentions revolving around faith, liturgy, community, and experience. The way adults shape worship with children points to the significance of spirituality. When adults perform directing roles, children’s spirituality can find a point of reference in stories and traditions while adults themselves gain from the process of translation this involves. When adults facilitate exploration, this nourishes both children’s and adults’ spirituality. Finally, when adults and children participate in worship practices together, it may contribute to a sense of community in which faith can be lived and shared.
Comparative performance evaluation of a diesel engine run on diesel and biodiesel produced from coconut oil

Using renewable alternative fuel such as biodiesel in the diesel engines has long been advocated for. The aim of the study was to experimentally investigate and compare the performance in terms of fuel consumption rate, brake power, mechanical efficiency of a diesel engine individually fuelled by sole coconut oil biodiesel and diesel. All the tests were conducted using a test rig at different engine loads of 0, 25, 50, 75 and 100%. Results of the test revealed that fuel consumption rate of the engine when it was fuelled by coconut oil biodiesel were 3.651, 4.058, 4.465, 3.113 and 1.76litres/h and were 2, 1.55, 1.10, 1.06 and 1.02litres/h when the engine was fuelled by sole diesel at the respective aforementioned engine loads. The brake powers of the engine when biodiesel was used were found to be lower than when diesel was used at each load The mechanical efficiencies of the engine when biodiesel was used were found to be slightly lower at each load than when diesel was used. The fuel consumption rates of the diesel engine when fuelled individually with sole biodiesel and sole diesel were found to vary with load, brake power and mechanical efficiency of the engine. Brake power was also found to vary with load when the engine was fuelled individually with sole biodiesel and sole diesel. Keywords: Diesel engine, diesel, biodiesel, fuel consumption, performance
Structural characterization of tau in fuzzy tau:tubulin complexes

Tau is a neuronal microtubule (MT) associated protein of significant interest due to its association with several neurodegenerative disorders. Tau’s intrinsic disorder and the dynamic nature of its interactions with tubulin and MTs make its structural characterization challenging. Here we use an environmentally sensitive fluorophore as a site-specific probe of tau bound to soluble tubulin. Comparison of our results with recently published tau:MT cryo-EM model reveals structural similarities between tubulin- and MT-bound tau. Analysis of residues across the repeat regions reveal a hierarchy in tubulin occupancy, which may be relevant to tau’s ability to differentiate between tubulin and MTs. As binding to soluble tubulin is a critical first step in MT polymerization, our characterization of the structural features of tau in dynamic, fuzzy tau:tubulin assemblies advances our understanding of how tau functions in the cell and how function may be disrupted in disease.
Machine Learning for Sociology

Machine learning is a field at the intersection of statistics and computer science that uses algorithms to extract information and knowledge from data. Its applications increasingly find their way into economics, political science, and sociology. We offer a brief introduction to this vast toolbox and illustrate its current uses in the social sciences, including distilling measures from new data sources, such as text and images; characterizing population heterogeneity; improving causal inference; and offering predictions to aid policy decisions and theory development. We argue that, in addition to serving similar purposes in sociology, machine learning tools can speak to long-standing questions on the limitations of the linear modeling framework, the criteria for evaluating empirical findings, transparency around the context of discovery, and the epistemological core of the discipline.
Trading Sand, Undermining Lives: Omitted Livelihoods in the Global Trade in Sand

Sand is a scarce resource, extracted from rivers and coasts at rates that exceed its natural renewal. Yet, little is understood about the political economy of sand extraction, the livelihood vulnerabilities produced, or why sand grabbing is occurring at unprecedented rates in particular locations. Drawing together literature on global production network approaches in economic geography and debates on sustainable livelihoods in development geography—two literatures rarely in conversation with one another—we reveal the links between new, globalized, cross-border articulations of poverty and prosperity and the sand trade. We situate our sand case in Southeast Asia across three sites, namely, in Singapore, the world’s top sand importer; Cambodia, a top-ten global exporter of sand; and an emerging exporter, Myanmar. We examine how sand mining affects, directly and indirectly, a range of livelihoods, specifically fisheries in Cambodia, riverbank agriculture in Myanmar, and migrant labor in Singapore. Drawing on our empirical work, we argue that linking these two literatures with empirical data on sand provides an approach that is broad in its connections and simultaneously grounded in specific practices, places, and people. This enables us to better account for often overlooked aspects in the production, erosion, and transfer of value. Key Words: global production networks, livelihoods, precarity, sand mining, Southeast Asia.
The weighted variance minimization for options pricing

Abstract A problem of the weighted variance minimization for options pricing in the case of a diffusion model is considered. We estimate a number of options with different values of some parameter which can be a strike price, an exercise date, a barrier, etc. The optimal estimators in the general case and their approximations for some options are pointed out.
Television as a Moderator Between Narcissism and Self-Promoting Behavior on Facebook

There is a debate going on in the present literature that how narcissism predicts several behaviors on social networking sites but the search for potential moderators of that relationship was not given much attention. A survey that assesses narcissism, time spent on TV and self-promoting behavior on Facebook was conducted with 151 undergraduate and post graduate students. Our finding indicates that narcissism and time spent on TV has significant positive relationship with self-promoting behavior on Facebook. The relationship between narcissism and self- promoting behavior is found to be significantly moderated by time spent on TV. The findings are discussed in the context of learning self-enhancing through exposure to TV programs and imitating that behavior for self-regulation by narcissistic individuals through social media.
Sharing songs on Hirakata Square: On playlists and place attachment in contemporary music listening

This article focuses on the relation between music and place. More particularly, it theorizes and investigates how music leads people to imagine places, sometimes resulting in a ‘musical topophilia’: the love for a place based on its association with a particular genre, musician or musical activity. This concept is explored through 17 semi-structured, in-depth interviews with Dutch users of music streaming services. The analysis shows how these music listeners connect their love for music to places in four ways: through (1) sound, (2) texts and images, (3) musicians, and (4) places of music production, distribution or consumption. Based on these four mediations, music listening shapes affective geographies.
Stream channel restoration increases climate resiliency in a thermally vulnerable Appalachian river

We quantified stream temperature response to in‐stream habitat restoration designed to improve thermal suitability and resiliency of a high‐elevation Appalachian stream known to support a temperature‐limited brook trout population. Our specific objectives were to determine if: (1) construction of deep pools created channel unit‐scale thermal refugia and (2) reach scale stream channel reconfiguration reduced peak water temperatures along a longitudinal continuum known to be highly susceptible to summer‐time warming. Contrary to expectations, constructed pools did not significantly decrease channel unit‐scale summer water temperatures relative to paired control sites. This suggests that constructed pools did not successfully intercept a cool groundwater source. However, we did find a significant effect of stream channel restoration on reach‐scale thermal regimes. Both mean and maximum daily stream temperatures experienced significantly reduced warming trends in restored sections relative to control sections. Furthermore, we found that restoration efforts had the greatest effect on stream temperatures downstream of large tributaries. Restoration appears to have significantly altered thermal regimes within upper Shavers Fork, largely in response to changes in channel morphology that facilitated water movement below major cold‐water inputs. Decreased longitudinal warming will likely increase the thermal resiliency of the Shavers Fork main‐stem, sustaining the ability of these key large river habitats to continue supporting critical metapopulation processes (e.g. supplemental foraging and dispersal among tributary populations) in the face of climate change.