Miracle-dz/UniFAR-FTUs huggingface dataset:
4 SWAP : AN ALGORITHM FOR ALLOCATING INTERVIEW RESOURCES

How should a firm allocate its limited interviewing resources to select the optimal cohort of new employees from a large set of job applicants? How should that firm allocate cheap but noisy resume screenings and expensive but in-depth in-person interviews? We view this problem through the lens of combinatorial pure exploration (CPE) in the multi-armed bandit setting, where a central learning agent performs costly exploration of a set of arms before selecting a final subset with some combinatorial structure.We generalize a recent CPE algorithm to the setting where arm pulls can have different costs and return different levels of information. We then prove theoretical upper bounds for a general class of armpulling strategies in this new setting. We apply our general algorithm to a real-world problem with combinatorial structure: incorporating diversity into university admissions. We take real data from admissions at one of the largest US-based computer science graduate programs and show that a simulation of our algorithm produces a cohort with hiring overall utility while spending comparable budget to the current admissions process at that university.
The use of reduced glutathione (GSH) as antioxidant for cryopreserved sperm in dogs

The aim of this study was to evaluate the effect of supplementation with different concentrations of reduced glutathione GSH (0; 5; 7.5; 10mM) in the extender for cryopreservation in dogs with evaluations performed after glycerolization (chilled) and thawing (thawed). For this purpose, we used 8 dogs and two semen collections were performed in a weekly interval, totaling 16 semen samples. The sperm were analyzed by automatic sperm motility (CASA) and flow cytometry analysis of mitochondrial potential (JC1 dye) and membrane/acrosome integrity (FITC-PI dyes). We evaluated subjectively the membrane and acrosome integrity, mitochondrial activity and DNA integrity. Seminal plasma was evaluated for lipid peroxidation (TBARS concentration). Chilled and thawed samples supplemented with 7.5 and 10mM of GSH had lower percentage of sperm with high (DAB – Class I) and medium (DAB – Class II) mitochondrial activity. And 10mM of GSH had higher percentage of low mitochondrial activity (DAB – Class III). Moreover, thawed samples of 10mM of GSH had high DNA fragmentation rates. Probably by a reductive stress effect on mitochondria which lead to an increase in reactive oxygen species, and a mitochondrial malfunction.
Electrostatic potential variations along flux surfaces in stellarators

Direct observations of electrostatic potential variations along the flux surfaces of the TJ-II stellarator are presented. Measurements taken with two distant Langmuir probe arrays show differences in the edge floating potentials profiles of several tens of volts in electron-root wave-heated plasmas. The differences are reduced for higher densities and lower electron temperatures after the ion-root electric field forms at the plasma edge. Neoclassical Monte Carlo simulations estimate the correct order of magnitude for the overall variation in potential and predict the trend observed with the radial electric field. However, for the specific location of the probes, the simulations give differences smaller than those observed experimentally.
Direct evidence of AGN feedback: a post-starburst galaxy stripped of its gas by AGN-driven winds

Post-starburst E+A galaxies show indications of a powerful starburst that was quenched abruptly. Their disturbed, bulge-dominated morphologies suggest that they are merger remnants. The more massive E+A galaxies are suggested to be quenched by active galactic nucleus (AGN) feedback, yet little is known about AGN-driven winds in this short-lived phase. We present spatially resolved integral field unit spectroscopy by the Keck Cosmic Web Imager of SDSS J003443.68 + 251020.9, at z = 0.118. The system consists of two galaxies, the larger of which is a post-starburst E+A galaxy hosting an AGN. Our modelling suggests a 400 Myr starburst, with a peak star formation rate of 120 M⊙ yr^(−1). The observations reveal stationary and outflowing gas, photoionized by the central AGN. We detect gas outflows to a distance of 17 kpc from the central galaxy, far beyond the region of the stars (∼3 kpc), inside a conic structure with an opening angle of 70 deg. We construct self-consistent photoionization and dynamical models for the different gas components and show that the gas outside the galaxy forms a continuous flow, with a mass outflow rate of about 24 M⊙ yr^(−1). The gas mass in the flow, roughly 10^9M⊙⁠, is larger than the total gas mass within the galaxy, some of which is outflowing too. The continuity of the flow puts a lower limit of 60 Myr on the duration of the AGN feedback. Such AGNs are capable of removing, in a single episode, most of the gas from their host galaxies and expelling enriched material into the surrounding circumgalactic medium.
Geodesics in Euclidean space with analytic obstacle

In this note we are concerned with the behavior of geodesies in Euclidean «-space with a smooth obstacle. Our principal result is that if the obstacle is locally analytic, that is, locally of the form xn = f(xx, . , xn_x) for a real analytic function /, then a geodesic can have, in any segment of finite arc length, only a finite number of distinct switch points, points on the boundary that bound a segment not touching the boundary. This result is certainly false that for a C°° boundary. Indeed, even in E , where our result is obvious for analytic boundaries, we can construct a C°° boundary so that the closure of the set of switch points is of positive measure. We denote by M the closure of the complement of the obstacle in Euclidean space En and by S the boundary of the obstacle. Thus M is an «-dimensional Riemannian manifold-with-boundary embedded in En and S is its boundary surface. A geodesic on a Riemannian manifold-with-boundary, M, is defined to be a locally shortest path in M. In our context the geodesies are easy to visualize; in E the geodesic is the path of a stretched string with the boundary considered as the surface of an obstacle around which the string must bend or into which the string must plunge and end. In (ABB1, ABB2) the properties of these geodesies are explored in the general setting of a Riemannian manifold-with-boundary. We describe briefly the elementary properties of the geodesies in M. A geodesic contacting the boundary in a segment is a geodesic of the bound- ary; a geodesic segment not touching the boundary is a straight line segment. A segment on the boundary joins a segment in the ambient space in a dif- ferentiable join. We call the endpoints on the boundary S of a segment not touching the boundary switch points. Cluster points of switch points, necessarily points at which the geodesic contacts the boundary, we call intermittent points or chatter points. As we will see, even for a C°° surface we can have sets of positive measure of such chatter points, and so it is reassuring to observe that the acceleration of a geodesic at a chatter point is 0. Indeed, acceleration is well defined and bounded everywhere except at the necessarily countable set of switch points; where it is defined, acceleration is normal and outward-pointing
Beryllium abundances along the evolutionary sequence of the open cluster IC 4651

Abstract The simultaneous investigation of Li and Be in stars is a powerful tool in the study of the evolutionary mixing processes. Here, we present beryllium abundances in stars along the whole evolutionary sequence of the open cluster IC 4651. This cluster has a metallicity of [Fe/H] = +0.11 and an age of 1.2 or 1.7 Gyr. Abundances have been determined from high-resolution, high signal-to-noise UVES spectra using spectrum synthesis and model atmospheres. Lithium abundances for the same stars were determined in a previous work. Confirming previous results, we find that the Li dip is also a Be dip. For post-main-sequence stars, the Be dilution starts earlier within the Hertzsprung gap than expected from classical predictions, as does the Li dilution. Theoretical hydrodynamical models are able to reproduce well all the observed features.
Venture Capitalists' Screening Criteria

Indian venture capital industry is one of the predominant players among South Asian countries. New funds have opened their shop here and are continuing to bring in more funds. The industry has undergone a major shift in focus. India is not a country which offers lower-cost production alternatives but is a high-tech and global outsourcing centre. The present study reports four factors which are used by the venture capitalists to screen new venture proposals. Using Kendall's tau-c analysis, the study brings out strong association between several variable pairs. Broadly, the analysis finds that: Successful venture teams put in sustained efforts on identified target markets. They are highly meticulous while attending to the details. These teams are adept at dealing with risk because of their impeccable past experience. Indian venture capitalists do not seem to be much enamoured of technology venturing; at least some of the successful ventures funded by them do not seem to show signs of being hi-tech. The study brings out four important variables which are highly unique to successful venture in India. They are: ability to evaluate and react to risk attention to details market share profits. Evaluating risk seems to be an area where unsuccessful ventures fail. Since successful teams focus on established markets and meticulously pursue these markets to gain market share, they achieve desired profits. The future research may explore the process of screening and evaluation by investigating the same through other means such as qualitative technique and techniques from cognitive psychology. The aspect of accuracy of venture capitalists' introspection would be an interesting area to study. Unless more research is conducted in the cognitive process of venture capitalists' decision-making, our understanding would remain insufficient.
Modeling High-Mass Star Formation and Ultracompact H ii Regions

Abstract Massive stars influence the surrounding universe far out of proportion to their numbers through ionizing radiation, supernova explosions, and heavy element production. Their formation requires the collapse of massive interstellar gas clouds with very high accretion rates. We discuss results from the first three-dimensional simulations of the gravitational collapse of a massive, rotating molecular cloud core that include heating by both non-ionizing and ionizing radiation. Local gravitational instabilities in the accretion flow lead to the build-up of a small cluster of stars. These lower-mass companions subsequently compete with the high-mass star for the same common gas reservoir and limit its overall mass growth. This process is called fragmentation-induced starvation, and explains why massive stars are usually found as members of high-order stellar systems. These simulations also show that the H ii regions forming around massive stars are initially trapped by the infalling gas, but soon begin to fluctuate rapidly. Over time, the same ultracompact H ii region can expand anisotropically, contract again, and take on any of the observed morphological classes. The total lifetime of H ii regions is given by the global accretion timescale, rather than their short internal sound-crossing time. This solves the so-called lifetime problem of ultracompact H ii region. We conclude that the the most significant differences between the formation of low-mass and high-mass stars are all explained as the result of rapid accretion within a dense, gravitationally unstable flow.
Session 1 : Emerging Global Issues in Stored Product Protection An emerging international picture of phosphine resistance : opportunities for global cooperation

Phosphine resistance in stored grain pests has been increasing in severity internationally for several decades and is a threat to the continued use of phosphine fumigation as an effective control method. Important insights into the development of resistance that will help to maintain the viability of phosphine as a fumigant in the future have come from molecular genetics. The recent discovery of genes responsible for resistance has enabled relatively rapid, high-throughput monitoring and detection of resistance alleles in several major pest species. Use of these markers is revealing how resistance arises and is selected within populations, information essential for effective, sustainable resistance management. Knowledge of the genes has also provided us the keys to understanding the mechanisms of phosphine toxicity and resistance. These insights are being used to discover side-effects of resistance that result in physiological weaknesses (i.e. ‘fitness costs’). The few molecular surveys that have been conducted to date have shown us that while the genes that give rise to resistance are highly conserved, i.e. always the same genes, the pattern of resistance allele selection, distribution and frequency are quite different between regions. This situation could be due to differing environmental conditions, storage and transport systems and pest management practices. The differences between patterns of resistance gene allele distribution and frequency will likely reveal factors important in the process of selection for resistance. The common genetic basis of phosphine resistance will facilitate the gathering and exchange of resistance data between regions and storage systems, providing new opportunities for international cooperation and comparison of data.
A Review of Factors Affecting Nursing Turnover in Japan

Background: High turnover among Japanese nurses is a significant issue. In 2012, 191,000 nurses joined the profession, while up to 161,000 left. If this trend continues, healthcare service delivery could be severely impacted. However, it is not clear why Japanese nurses leave the profession. There are no systematic reviews clarifying the complex interrelated personal, organizational, and socio-cultural factors that contribute to nurse turnover in Japan. Such insight may help when developing policies in response to this public health issue. Objective: This study aimed to identify factors affecting Japanese nurses’ intention to leave their current position and/or the career as a whole. Methods: A structured review was conducted by researching primary research articles (in English-speaking journals) between 2006 and 2016. Four databases and Google Scholar were used to identify quantitative and qualitative studies focused on describing factors contributing to nursing turnover in Japan. Papers were screened and appraised using appropriate tools. A narrative synthesis was applied to papers included in the review. A thematic analysis was conducted on the findings from each paper. Results: Ten papers were included in the review. Three themes emerged: personal factors, socio-cultural factors, and organizational factors. Relationships between these factors were identified, including associations with burnout and job dissatisfaction. Key factors contributing to job dissatisfaction and burnout included perceived unsuitability to the job, poor work environment, inadequate quality of care, low remuneration, and inexperience. Conclusion: Various strategies may be implemented to address nurses’ intent to leave, including career development and training, flexible working arrangements, improved interpersonal relationships in the workplace, recognition of one’s work, health and wellness courses, and other educational programmers. Generalization regarding each particular nurse’s decision to leave his or her job, or the profession, is difficult to make. The interplay between various subjective and objective factors needs to be considered.
Cardiovascular reactivity and pain perception to thermal noxious stimuli across different phases of Menstrual Cycle

Epidemiological studies on animal and human participants have failed to reach a consensus regarding the interaction of the autonomic nervous system with the female gonadal hormones and this paucity in research is important for a number of reasons since an alarming number of females complain of chronic pain and cardiovascular diseases throughout their reproductive lifespan the results of this complex interaction will help unraveling strategies for planning as well as implementation. The aim of the present study was to examine whether the different phases of menstrual cycle alter the cardiac functioning as well as the pain nociception tested using the Cold Pressor test. Thirty eumenorrhic females were recruited and examined during the follicular and luteal phases of menstrual cycle for changes in the heart rate, systolic and diastolic blood pressures as well as for pain threshold, tolerance and its perception during Cold Pressor test. The results from our study proved that the heart rate, systolic and diastolic blood pressures were higher while the pain threshold and tolerance was lower during the luteal phase. We hence conclude that the luteal phase induces a greater cardiovascular reactivity and pain nociception as a result of greater sympathetic arousal due to interaction of the Autonomic nervous system with the endogenous gonadal hormones. Keyword: Cold pressor test, Estrogen, Menstrual cycle, Vagal
The Spatial Extent of Commercial Bank Deposit and Loan Contracts

Two sets of null hypotheses are posed and tested: First, that levels of both deposits and loans are positively related to the size of the deposit market and unrelated to distance to that market. Second, competition has no effect on the loans or deposits from or to a bank office. New primary survey data is analyzed. Distance is significant in both deposit and loan markets. Bank lending is almost wholly contained within an hour’s drive from the office. Local competition doesn’t matter for deposits, suggesting deposit markets are spatially integrated. It matters for loans, suggesting spatial credit market segmentation.
Title Improved multi-level pedestrian behavior prediction based onmatching with classified motion patterns

This paper proposes an improved multi-level pedestrian behavior prediction method based on our previous research work on learning pedestrian motion patterns and predicting pedestrian long-term behaviors as their motion instances are being observed. The improvement mainly focuses on the similarity matching criteria between the trajectory and the clustered MP whose main advantages are that (1) a reasonable similarity range of MP is automatically calculated instead of manually set; (2) the distance feature and the changing angle feature are considered together for similarity matching while only the distance feature is considered before. The improved method has been implemented and a study of how the new prediction method performs in real world scenario is conducted. The results show that it works well in real DCE and the prediction is consistent with the actual behavior. Keywords-motion patterns; similarity matching; multi-level behavior prediction; dynamically changing environment
Oxides and Hydroxides of Aluminum

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Quantum Simulation of a Lattice Schwinger Model in a Chain of Trapped Ions

Gauge theories such as quantum electrodynamics, in principle, give us a precise understanding of the interactions between subatomic particles, but often the calculations involved are beyond current computational capabilities. Quantum simulators based on experimental many-body systems could be a solution to this problem. Scientists exploit the current state-of-the-art experimental technology for manipulating cold trapped ions and propose a simulator of the one-dimensional version of quantum electrodynamics.
Experimental determination of Young's modulus reduction in ion implanted diamond

1 Dipartimento di Fisica, Università di Torino, Torino, Italy. 2 NIS Centre of Excellence, Università of Torino, Torino, Italy. 3 INFN Sezione di Torino, Torino, Italy. 4 INFN, Laboratori Nazionali di Legnaro, Legnaro (Padova), Italy. 5Department of Applied Science and Technologies, Politecnico di Torino, Italy. 6Center for Space Human Robotics @Polito, Istituto Italiano di Tecnologia, Torino, Italy.
Nanocomposite of Poly(l-Lactic Acid) with Inorganic Nanotubes of WS2

Composites of poly(l-lactic acid) (PLLA) reinforced by adding inorganic nanotubes of tungsten disulfide (INT–WS2) were prepared by solvent casting. In addition to the pristine nanotubes, PLLA nanocomposites containing surface modified nanotubes were studied as well. Several surface-active agents, including polyethylene imine (PEI), were studied in this context. In addition, other biocompatible polymers, like poly d,l-lactic acid (PDLLA) and others were considered in combination with the INT–WS2. The nanotubes were added to the polymer in different proportions up to 3 wt %. The dispersion of the nanotubes in the nanocomposites were analyzed by several techniques, including X-ray tomography microscopy (Micro-XCT). Moreover, high-temperature rheological measurements of the molten polymer were conducted. In contrast to other nanoparticles, which lead to a considerable increase of the viscosity of the molten polymer, the WS2 nanotubes did not affect the viscosity significantly. They did not affect the complex viscosity of the molten PLLA phase, either. The mechanical and tribological properties of the nanocomposites were found to improve considerably by adding the nanotubes. A direct correlation was observed between the dispersion of the nanotubes in the polymer matrix and its mechanical properties.
days of Stromgren b , y and narrow-band [ OIII ] , H a photometric evolution of gamma-ray Nova Del 2013 ( = V 339 Del )

We present and discuss highly accurate photometry obtained through medium Stromgren y; b bands and narrow [OIII], Ha bands covering 500 days of the evolution of Nova Del 2013 since its maximum brightness. This is by far the most complete study of any nova observed in such photometric systems. The nova behavior in these photometric bands is very different from that observed with the more conventional broad bands like UBVRCIC or u0g0r0i z0, providing unique information about extent and ionization of the ejecta, the onset of critical phases like the transition between optically thick and thin conditions, and re-ionization by the central super-soft X-ray source. The actual transmission profiles of the y; b, [OIII] and Ha photometric filters have been accurately measured at different epochs and different illumination angles, to evaluate in detail their performance under exact operating conditions. The extreme smoothness of both the Ha and [OIII] lightcurves argues for absence of large and abrupt discontinuities in the ejecta of Nova Del 2013. Should they exist, glitches in the lightcurves would have appeared when the ionization and/or recombination fronts overtook them. During the period of recorded very large variability (up to 100 over a single day) in the super-soft X-ray emission (from day +69 to +86 past V maximum), no glitch in excess of 1% was observed in the optical photometry, either in the continuum (Stromgren y) or in the lines ([OIII] and Ha filters), or in a combination of the two (Stromgren b, Johnson B and V). Considering that the recombination time scale in the ejecta was one week at that time, this excludes global changes of the white dwarf as the source of the X-ray variability and supports instead clumpy ejecta passing through the line of sight to us as its origin. 2015 Elsevier B.V. All rights reserved.