Miracle-dz/UniFAR-FTUs huggingface dataset:
University of Cape Town

The use of social networking sites, such as Facebook, in the job application screening process has changed the recruitment landscape. Many human resource (HR) professionals and recruiters have begun to use social networking sites as a tool to attract, source and screen potential candidates. When screening candidates’ Facebook profiles, recruiters make personality judgements that have important consequences for hiring decisions. However, little is known about what makes a good judge of personality in the world of online screening for recruitment. This study investigated the relationship between recruiters’ Big Five personality traits (extraversion, agreeableness, conscientiousness, openness to experience and neuroticism) and their ability to judge accurately candidates’ personality traits from their Facebook profiles. In particular, distinctive accuracy measures were employed which account for personality profile normativeness, or the degree to which applicants being rated are generally alike – an important limitation of earlier profile accuracy measures. Results from 456 university students who judged five actual Facebook profiles for which ‘true score’ estimates on personality traits were possible, revealed that recruiters were generally able to infer applicants’ personality traits from their Facebook profiles. However, recruiter personality was not an important factor in their judgement accuracy, neither when accuracy was operationalised as traditional profile accuracy measures, nor as distinctive accuracy.
MEDIAWIKI AND GOOGLE DOCS AS ONLINE COLLABORATION TOOLS FOR GROUP PROJECT CO-CONSTRUCTION

2This paper reports and describes the use of MediaWiki and Google Docs as online collaboration tools for co-constructing knowledge in a group project. Undergraduate Information Management students used MeidaWiki and Google Docs as collaboration tools for carrying out two separate projects. We assessed and compared students’ perception on the effectiveness of MediaWiki and Google Docs after the completion of the projects. Results indicated positive experiences from using the tools for online collaboration in the group projects for some of the students. More students found MediaWiki an effective knowledge management tool than Google Docs.
Real Exchange Rate Appreciation in Emerging Markets: Can Fiscal Policy Help?

A number of emerging markets have experienced substantial real exchange rate appreciationin recent years, generating concerns about competitiveness and prompting policymakers torespond with a combination of mitigating policies. This paper shows that fiscal policy can play a role in alleviating these pressures. Using a sample of 28 emerging market economies over 1983-2011, we estimate a dynamic model of the real exchange rate and find that a permanent fiscal adjustment may reduce appreciation pressures over the long term. Furthermore, the composition of public spending matters, with reductions in current spending playing a key role. To illustrate the importance of these findings, the paper focuses on the case of Brazil. Our results suggest that maintaining fiscal discipline while increasing public investment in Brazil is likely to ease real appreciation pressures, highlighting the importance of tackling long-standing budget rigidities.
Brave New Digital Classroom: Technology and Foreign Language Learning

Brave New Digital Classroom: Technology and Foreign Lan- guage Learning by Robert J. Blake. Washington DC: Georgetown University Press, 2008, vii-189 pp. Reviewed by Hye Ri Stephanie Kim University of California, Los Angeles Technology in the 21st century is not an option, but is a vital part of students’ lives. In the efforts to keep up with and take advantage of technological advance- ment, many schools integrate technology into their curriculum. However, one some- times comes across teaching practices that are technology-driven on one end of the extreme while on the other are teaching practices embodied by teachers’ resistance to use technology. Brave New Digital Classroom: Technology and Foreign Language Learning by Robert J. Blake aims to address all prevalent issues of instructional technology use and provides an overview of the most successful technologies used in language classrooms. In short, this small but highly resourceful book is the first of its kind to offer a comprehensive summary of technologies developed to assist language learning, with an emphasis on foreign language classrooms. It would serve as an excellent resource for language curriculum developers or instructors considering incorporating technologies into their program or teaching, as well as for graduate students who wish to get an overview on this topic. In the Preface and Chapter 1, Blake clearly sets the goal of the book and the theoretical basis from which his view on the incorporation of technology originates. The book is not intended to provide instructions on how to use technological tools. Instead, it offers an overview and evaluation of research and successfully used tools, thereby helping the readers to gain a broader understanding of them and encouraging the readers to conduct further research. The asset of the book lies in the fact that incorporation of technology is motivated based on Second Language Acquisition (SLA) theories, in particular the Interactionist Model, which states that social interaction is necessary for and facilitates L2 learning. It is an undeniable fact that living in a country where the target language is spoken provides students with abundant opportunities for input and social interaction. However, this is not a possible option for all learners. By presenting this gap between the ideal and the reality, the book guides the readers to the big question: Can technology then provide more opportunities for social interaction in classrooms? The book mainly focuses on answering this question. In addition, Blake emphasizes that the deci- sion to incorporate technology should be driven by principles of second language acquisition and should only be used in the service of language teaching and learning. By presenting such viewpoints in the beginning, Blake first sets up a rationale for and then justifies the use of technology in language classrooms. Issues in Applied Linguistics © 2009, Regents of the University of California ISSN 1050-4273 Vol. 17 No. 1, 67-69
Factors Affecting Farmers’ Satisfaction from Water Users Association in the Harran Plain-GAP Region, Turkey

The purpose of this paper was to determine the factors affecting farmers' satisfaction from Water Users Associations (WUAs) in the Harran Plain-Turkey. The data used in this study come from a sample of 378 farmers among 23,204 in theanlourfa-Harran Plain. They were chosen via simple random sampling method and interviewed face to face. Sampling was conducted in 52% of the settlements. To analyze the collected survey data, SPSS 15 was used together with Kruskal Wallis, Mann-Whitney, Pearson Chi - square and the correlation tests. The results indicated the existence of relationship between satisfaction and education levels, knowledge level about WUA, and status of ownership, land area, age, farming experiences, income, and service quality given by WUAs. These factors significantly explained satisfaction of farmers. The average of variables' highest satisfaction was calculated as 47.4%. The highest satisfaction was 68.5% and belonged to the status of ownership; the lowest one was 28.3% in the case of farming experiences. The managers of WUAs should be concentrating on these factors in order to increase satisfaction and provide training and information for farmers.
Black Hole Outflows

I show that Eddington accretion episodes in active galactic nuclei (AGN) are likely to produce winds with velocities υ ~ 0.1c and ionization parameters up to ξ ~ 10 4 (cgs), implying the presence of resonance lines of helium- and hydrogen-like iron. These properties are direct consequences of momentum and mass conservation, respectively, and agree with recent X-ray observations of fast outflows from AGN. Because the wind is significantly subluminal, it can persist long after the AGN is observed to have become sub-Eddington. The wind creates a strong cooling shock as it interacts with the interstellar medium of the host galaxy, and this cooling region may be observable in an inverse Compton continuum and lower excitation emission lines associated with lower velocities. The shell of matter swept up by the ('momentum-driven') shocked wind must propagate beyond the black hole's sphere of influence on a time-scale of ≲ 3 x 10 5 yr. Outside this radius, the shell stalls unless the black hole mass has reached the value M σ implied by the M-a relation. If the wind shock did not cool, as suggested here, the resulting ('energy-driven') outflow would imply a far smaller supermassive black hole mass than actually observed. In galaxies with large bulges the black hole may grow somewhat beyond this value, suggesting that the observed M-σ relation may curve upwards at large M. Minor accretion events with small gas fractions can produce galaxy-wide outflows with velocities significantly exceeding σ, including fossil outflows in galaxies where there is little current AGN activity. Some rare cases may reveal the energy-driven outflows which sweep gas out of the galaxy and establish the black hole-bulge mass relation. However, these require the quasar to be at the Eddington luminosity.
SPECTROSCOPIC OBSERVATIONS OF SN 2012fr: A LUMINOUS, NORMAL TYPE Ia SUPERNOVA WITH EARLY HIGH-VELOCITY FEATURES AND A LATE VELOCITY PLATEAU

We present 65 optical spectra of the Type Ia SN 2012fr, 33 of which were obtained before maximum light. At early times, SN 2012fr shows clear evidence of a high-velocity feature (HVF) in the Si ii λ6355 line that can be cleanly decoupled from the lower velocity “photospheric” component. This Si ii λ6355 HVF fades by phase −5; subsequently, the photospheric component exhibits a very narrow velocity width and remains at a nearly constant velocity of ∼12,000 km s−1 until at least five weeks after maximum brightness. The Ca ii infrared triplet exhibits similar evidence for both a photospheric component at v ≈ 12,000 km s−1 with narrow line width and long velocity plateau, as well as an HVF beginning at v ≈ 31,000 km s−1 two weeks before maximum. SN 2012fr resides on the border between the “shallow silicon” and “core-normal” subclasses in the Branch et al. classification scheme, and on the border between normal and high-velocity Type Ia supernovae (SNe Ia) in the Wang et al. system. Though it is a clear member of the “low velocity gradient” group of SNe Ia and exhibits a very slow light-curve decline, it shows key dissimilarities with the overluminous SN 1991T or SN 1999aa subclasses of SNe Ia. SN 2012fr represents a well-observed SN Ia at the luminous end of the normal SN Ia distribution and a key transitional event between nominal spectroscopic subclasses of SNe Ia.
Effect of Feed Additives on Nutrient Intake and Feed Efficiency of Lactating Crossbred Cows

The nutritional needs of dairy animals with respect to energy, protein, minerals and vitamins have long been known, and these have been refined in recent decades. Various requirement determination systems exist in different countries for ruminants and nonruminants, which were originally designed to assess the nutritional and productive consequences of different feeds for the animal once intake was known. In modern-day farming, the nutritional requirements of farm animals are well understood and all requirements can be met through direct dietary supplementation of the limiting nutrients in concentrated form. Feeding high producing cows continues to challenge dairy farmers and nutritionists.
Nitrogen fertilization of dryland grasses in the Northern Great Plains.

Dryland grass production is an important agricultural commodity in the Northern Great Plains. Nitrogen (N) fertilizer can increase dry matter production and forage quality, yet there are relatively few rangeland and improved pasture managers who utilize fertilization practices to optimize production. Two trials (1972-1975 and 1978-1981) with 10 common grass species used a single application of 0, 56, or 112 kg N ha-1 and 0, 112, or 224 kg N ha-1 to evaluate long-term grass performance to N fertilization. Dry matter production in each trial was measured annually for 4 years. Yields increased on average 1,340 kg ha-1 with the application of 56 kg N ha-1, and 1,662 kg ha-1 with 112 kg N ha-1 in Trial 1. In Trial 2, yields increased 3,499 and 5,140 kg ha-1 with applications of 112 and 224 kg N ha-1, respectively. Responses to applied N were evident 4 years after application for some species, most likely due to the combination of improved grass vigor and recycling of fertilizer N immobilized in organic forms. Single applications of N were effective in improving dry matter production of some common grasses for multiple years, when water was suitable. The magnitude of response and potential economic return from fertilization were species dependent.
Continuum Modeling of Pressure‐Balanced and Fluidized Granular Flows in 2‐D: Comparison With Glass Bead Experiments and Implications for Concentrated Pyroclastic Density Currents

Granular flows are found across multiple geophysical environments and include pyroclastic density currents, debris flows, and avalanches, among others. The key to describing transport of these hazardous flows is the rheology of these complex multiphase mixtures. Here we use the multiphase model MFIX in 2‐D for concentrated currents to examine the implications of rheological assumptions and validate this approach through comparison to experiments of both frictional and fluidized flows made of glass beads (Sauter mean grain‐size of 75 μm). Because the rheology of highly polydisperse, highly angular, polydensity granular mixtures is poorly known, we focus on simplified monodisperse or bidisperse mixtures described by the frictional flow theory of Schaeffer (1987, https://doi.org/10.1016/0022‐0396(87)90038‐6) and Srivastava‐Sundaresan, often referred to as the Princeton model (Srivastava & Sundaresan, 2003, https://doi.org/10.1016/S0032‐5910(02)00132‐8). We show that simulations including the latter model replicate well the flow shape, kinematics, and pore fluid pressure that match well‐constrained dam‐break experiments of initially fluidized or pressure‐balanced granular flows. Simulations reveal that pore fluid pressure is intrinsically modulated by dilation and compaction of the flow and hence can be generated in concentrated pyroclastic density currents. We use these simulations to interpret basal pore pressure signals from local flow properties (mixture density, solid velocity, and pore fluid pressure). Rheological changes retard these simulated flows considerably near the predicted runout, but most continuum models cannot inherently predict a zero velocity. We suggest an inertial number parameter that can be used to approximate deposition, and this approach could be a valuable tool used to validate simulations against natural pyroclastic current examples.
An investigation into the sensory properties of materials

An initial matrix of material representation was established for studying human perception and response to different materials. A conceptual discrimination was clarified between texture and texture perception. Analysis of the preliminary results from the psychological tests have enabled four character dimensions of texture description to be proposed: geometrical dimension; physical-chemical dimension; emotional dimension; and associative dimension. Lexicons within these dimensions were found to be slightly different in responsive sensitiveness under different conditions (material surface finish, sensory conditions, subject groups etc.). A comparison was made between visual touch and blindfold touch. With the proposed dimension-lexicon system, people could subjectively describe the material texture in a common way. keywords materials, sensory perception, tactual texture, product design
Spectroscopic monitoring of the Herbig Ae star HD 104237 - I. Multiperiodic stellar oscillations

We present the results of multisite observations spanning two years of the pre-main-sequence Herbig Ae star HD 104237. The star was observed in high resolution spectroscopy (R ≥ 35 000) for a total of 157.3 h of effective expo- sure time, over 42 nights, corresponding to a data base of 1888 individual echelle spectra. We confirm that the HD 104237 system includes a spectroscopic binary, whose primary component HD 104237 A is pulsating. The resulting high quality radial velocity curve allows us to detect for the first time by spectroscopic means multiperiodic oscillations in a pre-main sequence star. Five different modes are detected with very high confidence, with frequencies ranging between 28.5 and 35.6 d −1 , typical of δ Scuti pulsations; an additional 3 frequencies have been extracted from the data, but with a lower level of confidence. The pattern of frequencies indicates that at least some of the detected modes are non-radial. The precise orbit determination and the measurement of the double line spectroscopic binary observed around periastron enabled us to determine a mass ratio of 1.29 ± 0.02 between the primary and the secondary; based on the primary mass of 2.2 ± 0.1 Mwe conclude that the spectroscopic secondary HD 104237 b should have a mass of 1.7 ± 0.1 Mand lie outside the pre-main sequence instability strip towards later spectral types. A search for pulsations in the radial velocity curve of the much weaker secondary component was not con- clusive at this stage. The location of the primary in the HR diagram and its position with respect to recent pre-main sequence evolutionary tracks and isochrones implies a location of the secondary indicative of spectral type K3.
Pilot Study of Empathy in Bilingual Adults

Empathy is of critical public health importance due to its association with relationship satisfaction and well-being (Davis & Oathout, 1987; Davis, 1983). There is growing evidence that bilingual individuals may have higher levels of empathy (Javor, 2016). One potential mechanism for this relationship is that bilingual individuals tend to have higher levels of executive functioning (Costa et al, 2008), which is linked to higher empathy because individuals are able to more easily adopt others’ perspectives. Previous studies examining this question have largely relied on self-report questionnaires assessing empathy as a general tendency (i.e., trait). No studies have examined differences in the empathic experience in the moment (i.e., state empathy) in monolinguals versus bilinguals. Furthermore, while there is much known about the neural underpinnings of executive function, the degree to which bilinguals show greater neural recruitment of executive function regions during the experience of empathy is not well understood. A primary purpose of this study is the development of materials to induce empathy in the moment in bilingual individuals through reading about an event designed to evoke empathy in their primary language and their secondary language. A secondary purpose of this study is to examine the effects of the empathy induction in the primary and secondary language on bilingual individuals through collection of behavioral and neuroimaging pilot data. Pilot data collection included measurement of empathy as a trait and state through self-report questionnaires. Brain activation in response to the empathy task was measured using functional near infrared spectroscopy. PILOT STUDY OF EMPATHY IN BILINGUAL ADULTS 3 Pilot Study of Empathy in Bilingual Adults
Selection of actuators and sensors for active surge control

Active control is one way to cope with surge in compression systems. For this, a suitable combination of actuators and sensors must be selected. In this paper, the goal is to find a combination fulfilling the condition that a controller exists, which stabilizes the nominal model in the face of disturbances and actuator limitations. For a collection of linearizations of the nonlinear system, this condition is quantified as an /spl Hscr//sub /spl infin// norm bound on the closed-loops. Among the proposed actuators and sensors, the close-coupled valve and mass flow sensor are the most promising for the considered system, but a movable wall should be added to meet the specifications.
Boundary element analysis for the Helmholtz eigenvalue problems with a multiply connected domain

For a Helmholtz eigenvalue problem with a multiply connected domain, the boundary integral equation approach as well as the boundary-element method is shown to yield spurious eigenvalues even if the complex-valued kernel is used. In such a case, it is found that spurious eigenvalues depend on the geometry of the inner boundary. Demonstrated as an analytical case, the spurious eigenvalue for a multiply connected problem with its inner boundary as a circle is studied analytically. By using the degenerate kernels and circulants, an annular case can be studied analytically in a discrete system and can be treated as a special case. The proof for the general boundary instead of the circular boundary is also derived. The Burton-Miller method is employed to eliminate spurious eigenvalues in the multiply connected case. Moreover, a modified method considering only the real-part formulation is provided. Five examples are shown to demonstrate that the spurious eigenvalues depend on the shape of the inner boundary. Good agreement between analytical prediction and numerical results are found.
How Far Does Economic Theory Explain Competitive Nonlinear Pricing in Practice?

Liberalisation of the British electricity market, in which previously monopolised regional markets were exposed to large-scale entry, is used to test the propositions of several recent theoretical papers on oligopolistic nonlinear pricing. Consistent with those theories, each oligopolist offered a single two-part electricity tariff, and a lump sum discount to consumers who purchased both electricity and gas. However, inconsistent with those theories, firms’ two-part tariffs are heterogeneous in ways that cannot be attributed to cost. We establish a series of stylised facts about the nature of these asymmetries between firms and use them to confront established theory.
Effect of Planting Date, Spacing and Seeding Methods on Disease Development and Yield Components of Rice (Oryza sativa L.) in Southeastern Nigeria

To investigate the effect of planting date, spacing and seeding methods on disease development and yield components of rice, a factorial experiment in randomized complete block design (RCBD) with four replications was conducted during 2011 planting season at Izzi Local Government Area (LGA) of Ebonyi State, Nigeria. This experiment was carried out with four levels of planting dates (early June, late June, early July and late July), three levels of spacing (15, 20 and 25 cm) and two levels of seeding method (direct seeding and seedling transplanting). The studied traits included plant height (PH), number of tillers (NT), leaf area (LA), root length (RL), panicle length (PL), 1,000 seed weight (SW), disease incidence and severity. The result showed that all the factors had significant effect on the parameters measured. Sowing in early July had the highest LA of 65.38 cm, PH of 122.00 cm, RL of 29.04 cm and TN of 10.54, and the second largest PL of 25.08 cm and SW of 25.12 g. Also sowing in early July had the highest disease severity of 3.21, followed by 3.14 which occurred in late July, while the least 2.17 occurred in early June. The direct seeding method had the highest disease incidence of 70.83%, followed by plant spacing of 15 cm × 15 cm which had the disease incidence of 69.72%, while sowing in early June had the least disease incidence of 57.50%. In conclusion, planting of rice in Southeastern Nigeria should be done in early July, as the yield components were significantly better than in other dates though with the highest disease severity.