Miracle-dz/UniFAR-FTUs huggingface dataset:
Achieving return on critical talent: a case study of a software development organization

A research case study was conducted with a startup software development organization, focusing on identifying and managing talent in a highly competitive environment. The organizational goal was to create a culture and management discipline that can foster improved business performance and support rapid growth. The comprehensive study sought to define the critical talent of the organization, identify how it can measurably contribute to the business, and provide specific recommendations for how management can more deliberately leverage that talent to meet the needs of customers and the business. Further research at six months and one year after the initial study produced the identification of organizational performance changes and certain improvements.
The Real Response to Uncertainty Shocks: the Risk Premium Channel

Uncertainty shocks are also risk premium shocks. With countercyclical risk aversion (RA), a positive shock to uncertainty increases risk and elevates RA as consumption growth falls. The combination of high RA and high uncertainty produces significant equity risk premia in bad times, which in turn, exacerbate the decline of macroeconomic aggregates and equity prices. Moreover, in the cross-section of equity returns, investors demand a risk premium for stocks that perform poorly in times of high uncertainty and elevated risk aversion. In a model with endogenously time-varying RA, uncertainty shocks lead to large falls in investment and equity prices that closely match state-dependent data responses. This paper was accepted by Tomasz Piskorski, finance.
STATUS AND MANAGEMENT OPTIONS OF PHYTOPHTHORA INFESTANS , A CAUSAL AGENT OF THE LATE BLIGHT DISEASE OF TOMATO , IN TROPICAL AFRICA

Late blight disease caused by Phytophthora infestans (Mont.) de Bary is a serious challenge in tomato (Solanum lycopersicum L or Lycopersicon esculentum L) production worldwide. In tropical Africa, the disease is increasing always due to its biology and different complex infection mechanism(s) used by its causative pathogen to survive, spread, and invade the tomato host plant and environment. Management options of the disease, such as integrated disease management (IPM), use of resistant tomato varieties, use of plant extracts and synthetic chemical pesticides have been recommended but are either poorly practised or limited in tropical Africa. Thus, this review discusses the status and commonly recommended management options against late blight disease-causing pathogen(s) including the pathogen strain complexes so that tomato growers and other stakeholders can understand specific strains and how they can design appropriate managerial approaches to halt challenges of the disease in tomato production in the tropical Africa.
Group specific effects of social policies on social trust

This paper elaborates on the existence of a gender gap in social trust and on the differences in the effects of social policies on social trust between men and women. Although according to the data, there are no statistically significant differences in trust levels between men and women, they seem to be differently influenced by social policy. The research shows that there is no gender dimension in social policy, but it allows one to conclude that women are usually treated by the welfare state in a less favorable manner than men. The latter includes differences between the two sexes in the following aspects: emphasis on employment; social benefits levels; treatment during the application for and monitoring of social benefits; poverty rate levels; treatment by social insurance; and in general, the reproduction by welfare states the subordination of women to men.
The GLACE-Hydrology Experiment : Effects of the Land-Atmosphere Coupling on Soil Moisture Variability and Drought Predictability

1. Earth System Science Program, School of Forestry and Wildlife Sciences, Auburn 5 University, Auburn, AL USA 6 2. Cooperative Institute of Environmental Research (CIRES), University of Colorado, Boulder, 7 CO USA 8 3. NOAA Earth System Research Laboratories, Physical Science Division, Boulder, CO USA 9 4. National Center for Atmospheric Research, Boulder, CO UA 10 5. Department of Atmospheric Sciences, National Taiwan University, Taiwan 11 6. Department of Computer Science and Software Engineering, Auburn University, AL USA 12 7. Department of Civil and Environmental Engineering, University of Colorado, Boulder CO 13 USA 14 Submission date: J. Climate, August 6, 2019 15
Determinants of Commercial Banks Liquidity in Botswana

The paper empirically analyzes the determinants of the liquidity of commercial banks in Botswana using a multiple linear regression model between 2009 and 2016 . On the basis of two indicators of liquidity risk, the research paper estimates the same group of determinants that co-create microeconomic factors (capital adequacy, size of the bank, spread, and nonperforming loans) and macroeconomic factors (Gross Domestic Product and inflation). Findings indicated that significant factors that determine the liquidity of the commercial banks in Botswana are the size of the bank, nonperforming loans and spread (the difference between interest rate loans and interest rates on deposits). Size of the bank and spread have a negative impact on bank liquidity whereas non-performing loans have a positive impact. The implication of these findings is that Bank of Botswana should devise legal requirements that give benchmarks of the above ratios to ensure sustainable liquidity of the commercial banks. This will help create a stable banking and financial sector and provides a conducive environment for sustainable economic growth and development.
Ju l 2 01 7 Scaling of Lyapunov Exponents in Homogeneous Isotropic Turbulence

Lyapunov exponents measure the average exponential growth rate of typical linear perturbations in a chaotic system, and the inverse of the largest exponent is a measure of the time horizon over which the evolution of the system can be predicted. Here, Lyapunov exponents are determined in forced homogeneous isotropic turbulence for a range of Reynolds numbers. Results show that the maximum exponent increases with Reynolds number faster than the inverse Kolmogorov time scale, suggesting that the instability processes may be acting on length and time scales smaller than Kolmogorov scales. Analysis of the linear disturbance used to compute the Lyapunov exponent, and its instantaneous growth, show that the instabilities do, as expected, act on the smallest eddies, and that at any time, there are many sites of local instabilities. b Current affiliation: Applied Research Laboratories, the University of Texas at Austin ∗ prakash@ices.utexas. edu ‡ nfitz@arlut.utexas. edu § rmoser@ices.utexas. edu
Establishing the correlation between soil and crop production to optimize wine quality

The inherent correlation between soil composition and viticulture productivity is complex and methodologies available are either labour intensive or requires significantly expensive technologies, such as precision viticulture. In this context, the paper elaborates on research that investigated in to establishing the correlation between soil nutrient distribution and soil type using 3-dimentional distribution models. Plant productivity and quality data collected from the vineyard are analysed to obtain weighted correlation of all factors being considered. Field monitoring from spring to autumn (October 2010/May 2011) has been conducted in a commercial vineyard located in Kumeu, New Zealand. Data collected include soil samples at strategic locations and yield production and sugar content of berries at the same specific sites for two grape varieties (Chardonnay and Pinot Noir). Soil properties were collected at three different horizons for a total of 58 sites (137 samples). Chemical experiments were conducted on the soil samples to establish the soil pH, Nitrate, Sodium and Potassium. Preliminary results show a slight difference between the availability of nutrients at different layers of soil in the vineyard. The spatial analysis at two different depths showed the top layers with lower pH values than bottom layers. In addition a significant correlation was found on Sodium, Nitrate and yield in relation to the elevation, slope and depth. Environmental conditions were an important factor on yield productivity at plant level, revealed by the Pearson’s and Spearman’s correlation (r= 0.408; rho=0.388), but a minor factor at field level (T-pair Sig (2.tailed) value of 0.397) when considering orientation of the plant. Figure 1 shows the locations where the yield was collected and the total yield produced per site (in Kg). From the map, it is evident that there is an 18° shift of the field from the true south-north direction, favouring the eastern branches of the vine which produced 10% more than the western side. Finally, geostatistical analysis to obtain accurate nutrient distribution maps using interpolation techniques to relate the nutrients with plant performance and berry quality are presented.
Causal Composition: Structural Differences among Dynamically Equivalent Systems

The dynamical evolution of a system of interacting elements can be predicted in terms of its elementary constituents and their interactions, or in terms of the system’s global state transitions. For this reason, systems with equivalent global dynamics are often taken to be equivalent for all relevant purposes. Nevertheless, such systems may still vary in their causal composition—the way mechanisms within the system specify causes and effects over different subsets of system elements. We demonstrate this point based on a set of small discrete dynamical systems with reversible dynamics that cycle through all their possible states. Our analysis elucidates the role of composition within the formal framework of integrated information theory. We show that the global dynamical and information-theoretic capacities of reversible systems can be maximal even though they may differ, quantitatively and qualitatively, in the information that their various subsets specify about each other (intrinsic information). This can be the case even for a system and its time-reversed equivalent. Due to differences in their causal composition, two systems with equivalent global dynamics may still differ in their capacity for autonomy, agency, and phenomenology.
Conformal Scattering of Maxwell fields on Reissner-Nordstrøm-de Sitter Black Hole

We construct a complete conformal scattering theory for Maxwell fields in the static exterior region of a Reissner-Nordstrøm-de Sitter black bole spacetime. This is done using uniform energy decay results that we obtain in a separate paper [47], to show that the trace operators are injective and have closed ranges. We then solve the Goursat problem (characteristic Cauchy problem) for Maxwell fields on the null boundaries showing that the trace operators are also surjective.
Audio-visual stimuli for the evaluation of speech-enhancing algorithms

The benefit from speech-enhancing algorithms in hearing devices may depend not only on the acoustic environment, but also on the audio-visual perception of speech, e.g., when lip reading, and on other visual cues. In particular, the functioning of speech-enhancing algorithms depends on the motion behavior of the user, which in turn depends on visual cues. In this presentation we introduce various audio-visual stimuli used for evaluation of speech-enhancing algorithms in hearing devices. The stimuli include video recordings of the Oldenburg sentence tests (OLSA), real-time animation of lip movement for virtual animated characters, and complex audiovisual environments. We will discuss the effects of the material on speech perception and motion behavior, and outline applications of these stimuli. Results show that visual cues provide a benefit in terms of speech reception thresholds in the audio-visual OLSA. This benefit can not be found with the animated lip movement using a simple vocal tract model. However, it was found that the animations are sufficient to achieve natural motion behavior. This presentation is related to contributions at this conference of Llorach et al. on details of audiovisual speech test material [19], and Hendrikse et al. on natural motion behavior and its influence on hearing aid algorithm performance in complex listening conditions [12].
Mathematisches Forschungsinstitut Oberwolfach Report No . 2 / 2018 DOI : 10 . 4171 / OWR / 2018 / 2 Topology of Arrangements and Representation Stability Organised

The workshop “Topology of arrangements and representation stability” brought together two directions of research: the topology and geometry of hyperplane, toric and elliptic arrangements, and the homological and representation stability of configuration spaces and related families of spaces and discrete groups. The participants were mathematicians working at the interface between several very active areas of research in topology, geometry, algebra, representation theory, and combinatorics. The workshop provided a thorough overview of current developments, highlighted significant progress in the field, and fostered an increasing amount of interaction between specialists in areas of research. Mathematics Subject Classification (2010): Primary 14N20, 14L30, 20C30, 20F36, 20F55, 20J05, 32S22, 52C35, 55P15, 55P62, 55R80. 57M07, Secondary 05E45, 05E25, 05E40, 13F55, 13D07, 14H10, 16P40, 18A25, 20C15, 20F28, 20G10, 52B20, 55N9
Human parvovirus B 19 genotype 1 in suspected dengue patients of Tefé , Amazonas State , Brazil

Introduction: Human parvovirus B19 (B19V) is a common pathogen, which on infection causes variety of clinical conditions from benign self-limiting exanthematous disease and other similar pathologies to fetal death. Methods: We collected 341 serum samples between the first and fourth day after the onset of symptoms from all patients suspected of dengue fever who were attended at Regional Hospital of Tefé. Initially, patients were screened for malaria by blood smear test and negative samples were sent to Fundação de Medicina Tropical Doutor Heitor Vieira Dourado (FMT-HVD) situated in Manaus (AM) for dengue testing using semi-nested multiplex PCR. Further, we investigated 44 malaria and dengue-negative samples of children for B19V DNA by nested-PCR. Positive samples were analyzed by BLAST against entire public non-redundant nucleotide database and genotyped by phylogenetic analyses using neighbor-joining clustering method. Results: Eight samples (18.2%) were found to be PCR positive. Fever, headache, ocular pain, and/or muscle pain were reported as the most frequent symptoms by the patients and none were diagnosed with rash at the time of sample collection. Phylogenetic analysis of major capsid protein 2 (VP2) and VP3 coding region showed high similarity with B19V genotype 1. Conclusions: Our results reveal the spread of B19V genotype 1 in Tefé. Moreover, our results emphasize the significance of laboratorial differential diagnosis using molecular techniques in patients with acute febrile, and thereby aid the health surveillance system in improving patient care even in the remote areas of Amazon.
Cosmic censorship beyond General Relativity : Collapsing charged thin shells in low energy effective string theory

The thin shell collapse in Einstein-Maxwell-dilaton is studied by resorting to solutions which represent four-dimensional, spherically symmetric black holes (or naked singularities) in low energy effective string theory, with the aim of testing the weak cosmic censorship conjecture. Through the Darmois-Israel formalism, we obtain the junction conditions that describe the matching of two spacetimes in this theory through timelike thin shells. The junction conditions, together with the weak and dominant energy conditions, are used to study the allowed positions of static thin shells whose matter content is a perfect fluid. Moreover, we study the collapse of thin shells made of dust, whose interior and exterior spacetimes are both described by static Einstein-Maxwell-dilaton solutions with equal dilaton charge, which is required for motion to be allowed. For this collapse, it is shown that the weak energy condition imposes that cosmic censorship is always satisfied and the shell either bounces or collapses into a black hole. Finally, we investigate the collapse of thin shells joining a time-dependent Einstein-Maxwell-dilaton exterior, that is radiating in the form of a null fluid, with a static interior. In this case, it is shown that if the energy conditions for the null fluid stress-energy tensor are satisfied, then the thin shell either collapses into a future event horizon, bounces back to infinity or otherwise the weak energy condition of the thin shell is violated before collapsing into a naked singularity, once more upholding the cosmic censorship conjecture.
Jeu d’apprentissage basé sur le débat pour la construction de preuves mathématiques

Debate is a valuable and effective method of learning. It is an interactive process in which learners cooperate by exchanging arguments and counter-arguments to solve a common question. We propose a debate-based learning game for mathematics classroom to teach how to structure and build mathematical proofs. Dung’s argumentation framework and its extensions are used as a means to extract acceptable arguments that form the proof. Moreover this allows instructors to provide feedbacks to learners without information over-
NATURAL STATE MODELING , STRUCTURE , PRELIMINARY TEMPERATURE AND CHEMICAL SYNTHESIS OF THE DIXIE VALLEY , NEVADA GEOTHERMAL FIELD

A number of geothermal systems in the Basin and Range Province, like the ones in Dixie Valley, Nevada have subsurface temperatures in excess of 200°C, and even 250°C by 2–3 km depth. These systems are typically associated with Quaternary normal faulting. Many of these systems are nonmagmatic in origin, based on the helium isotope ratios in the hot water (Kennedy et al., 2000). A recent seismic, gravity, magnetic, and thermal synthesis of the Dixie Valley, Nevada geothermal system has shown that the fault system is much more complex and 3-dimensional that previously thought. We have utilized this integrated geophysical image to provide structural control on a natural state regional fluid flow model for the valley-range systems to investigate several outstanding issues related to fluid recharge, and the thermal evolution of the high temperature reservoir.
The cGAS Paradox: Contrasting Roles for cGAS-STING Pathway in Chromosomal Instability

Chromosomal instability (CIN) is an intricate phenomenon that is often found in human cancer, characterized by persisting errors in chromosome segregation. This ongoing chromosome mis-segregation results in structural and numerical chromosomal abnormalities that have been widely described to promote tumor evolution. In addition to being a driver of tumor evolution, recent evidence demonstrates CIN to be the central node of the crosstalk between a tumor and its surrounding microenvironment, as mediated by the cGAS-STING pathway. The role that cGAS-STING signaling exerts on CIN tumors is both complex and paradoxical. On one hand, the cGAS-STING axis promotes the clearance of CIN tumors through recruitment of immune cells, thus suppressing tumor progression. On the other hand, the cGAS-STING pathway has been described to be the major regulator in the promotion of metastasis of CIN tumors. Here, we review this dual role of the cGAS-STING pathway in the context of chromosomal instability and discuss the potential therapeutic implications of cGAS-STING signaling for targeting CIN tumors.
Use of Academic Library: A Case Study of Covenant University, Nigeria

This study examines the extent of use of library resources in Covenant University, Nigeria. Two separate questionnaires were used to gather data. 400 registered library users were selected using the stratified random sampling technique. The findings revealed that 88% of the students sampled visited the library to read for examination while most faculties visited the library to read journals, electronic or print. Also, students used OPAC more than faculty. It is recommended that faculty give reading assignments that will require students to consult journals and other resources in the library, not just for examination purposes. And the library should organize a “library week” each semester to showcase the various resources available in the library
Multi-Weight Partial Domain Adaptation

Domain adaptation (DA) plays an important role in transfer learning. However, when target label space is a subset of source label space, standard DA cannot tackle this issue. Partial domain adaptation focuses on how to transfer knowledge from massive labelled dataset to unlabelled miniature one, which attracts extensive research interest. In this paper, we propose a Multi-Weight Partial Domain Adaptation (MWPDA) to solve the problem. We divide the source domain into two parts: shared classes and outlier classes. MWPDA aims to reduce negative transfer caused by outlier classes when transferring knowledge between domains. Based on OTSU-Algorithm, hard shared-class labels are obtained to decrease weights of outlier classes and increase ones of shared classes. A novel shared-sample classifier is trained for shared-sample weights to distinguish outlier samples. Shared-class weights and shared-sample weights are acted on source classifier and domain discriminator to jointly distinguish outlier classes and samples. This kind of multi-weight mechanism can avoid misalignment to outlier classes and promote classification accuracy. Furthermore, our universal network framework is utilized for both partial domain adaptation and standard domain adaptation issues. Extensive experiments on three benchmark domain adaptation datasets illustrate our method achieves state-of-the-art results.
Evaluating potential EEG-indicators for auditory attention to speech in realistic environmental noise

The human brain is remarkably capable of perceiving relevant sounds in noisy environments but the underlying interplay of neurophysiology and acoustics is still being investigated. Cortical processing of these sounds in the brain depends on attentional demand. One of the most important issues is how to identify whether a person is paying attention to the relevant sounds or not. The aim of this study was to explore the potential of single-trial electroencephalography (EEG) indicators to distinguish the cortical representation of three sequential tasks — attentive listening to lectures in background noise, attentive and inattentive listening to background noise alone. Three types of environmental noise, including multi-talker babble, fluctuating traffic and highway sounds were employed as the background during the first task and the stimulus during the second and third tasks. 23 healthy volunteers were exposed to these three tasks while 64-channels EEG signals were recorded. Alpha-band spectral characteristics (peak frequency and power) were investigated as potential indicators of attention and cortical inhibition. Furthermore, based on the hypothesis of self-similarity as excitation-inhibition balance, long-range temporal correlation of alpha-band activity was quantified based on detrended fluctuation analysis. Finally, the hypothesis of speech envelope entrainment of brain activity motivated to estimate the delta absolute power for investigating the attended sound. Considering the participant as a random factor, a linear mixed-effect regression was employed to model the estimated indicators as a function of listening task, EEG channel cluster, and background noise. Strong significant differences were found that support our hypotheses that auditory attention to speech can be observed via EEG-indicators.