555 research outputs found

    Student Pharmacists’ Personal Finance Perceptions, Projected Indebtedness upon Graduation, and Career Decision-Making

    Get PDF
    Objectives: To evaluate the extent to which students’ personal finance perceptions, projected student loan indebtedness, and demographic characteristics predict post-PharmD career intentions. Methods: Students at three pharmacy colleges completed a 31-item survey instrument that assessed personal finance perceptions, self-efficacy beliefs, anticipated student loan debt upon graduation, postgraduate intentions, anticipated practice setting upon graduation, and demographic characteristics. Logistic regression models were used to examine the extent to which personal finance perceptions, student loan indebtedness, and demographic characteristics predicted postgraduate intentions and anticipated practice setting. Results: A total of 763 usable responses were obtained (response rate=90.3%). Students reported an anticipated personal student loan debt mean at graduation of $162,747±87,093 and an estimated 7.4±5.8 years to pay off non-mortgage debt post-graduation. Fifty-three percent of students reported planning to practice in a community pharmacy setting post-graduation, and 54% indicated intentions to enter practice directly. Student loan indebtedness was not a significant predictor of planning to pursue postgraduate training. There was a significant association between debt influence and pressure perceptions and pursuance of postgraduate training (aOR=0.78;p=0.009). The odds of indicating hospital (vs. chain community) pharmacy as the anticipated setting decreased 36% with every 1-point increase in debt influence and pressure perceptions (aOR=0.64;p\u3c0.001 Conclusions: Perceived debt pressure and influence predicted intention to enter practice directly (vs. pursuing postgraduate training) and selection of chain community pharmacy (vs. hospital pharmacy). Student loan indebtedness was not a significant predictor of postgraduate training intentions. Interventions that equip students to manage pressure associated with student loan debt should be explored

    Tissue registration and exploration user interfaces in support of a human reference atlas

    Get PDF
    Seventeen international consortia are collaborating on a human reference atlas (HRA), a comprehensive, high-resolution, three-dimensional atlas of all the cells in the healthy human body. Laboratories around the world are collecting tissue specimens from donors varying in sex, age, ethnicity, and body mass index. However, harmonizing tissue data across 25 organs and more than 15 bulk and spatial single-cell assay types poses challenges. Here, we present software tools and user interfaces developed to spatially and semantically annotate ( register ) and explore the tissue data and the evolving HRA. A key part of these tools is a common coordinate framework, providing standard terminologies and data structures for describing specimen, biological structure, and spatial data linked to existing ontologies. As of April 22, 2022, the registration user interface has been used to harmonize and publish data on 5,909 tissue blocks collected by the Human Biomolecular Atlas Program (HuBMAP), the Stimulating Peripheral Activity to Relieve Conditions program (SPARC), the Human Cell Atlas (HCA), the Kidney Precision Medicine Project (KPMP), and the Genotype Tissue Expression project (GTEx). Further, 5,856 tissue sections were derived from 506 HuBMAP tissue blocks. The second exploration user interface enables consortia to evaluate data quality, explore tissue data spatially within the context of the HRA, and guide data acquisition. A companion website is at https://cns-iu.github.io/HRA-supporting-information/

    Understanding the role of designers' personal experiences in interaction design practice

    Get PDF
    Using designers' personal experiences in interaction design practice is often questioned in a predominantly rationalist practice like HCI and professional interaction design. Perhaps for this reason, little work has been conducted to investigate how designers' personal experiences can contribute to technology design. Yet it's undeniable designers have applied their personal experiences to their design practice and also benefited from such experiences. This paper reports on a multiple case study that looks at how interaction designers worked with their personal experiences in three industrial interaction design projects, thus calling for the need to explicitly recognize the legitimacy of using and better support of the use of designers' personal experiences in interaction design practice. In this study, a designer's personal experiences refer to the collections of his/her individual experiences derived from his/her direct observation or past real-life events and activities, as well as his/her interaction with design artifacts and systems whether digital or not

    Search for transient optical counterparts to high-energy IceCube neutrinos with Pan-STARRS1

    Get PDF
    In order to identify the sources of the observed diffuse high-energy neutrino flux, it is crucial to discover their electromagnetic counterparts. IceCube began releasing alerts for single high-energy (E>60E > 60 TeV) neutrino detections with sky localisation regions of order 1 deg radius in 2016. We used Pan-STARRS1 to follow-up five of these alerts during 2016-2017 to search for any optical transients that may be related to the neutrinos. Typically 10-20 faint (m<22.5m < 22.5 mag) extragalactic transients are found within the Pan-STARRS1 footprints and are generally consistent with being unrelated field supernovae (SNe) and AGN. We looked for unusual properties of the detected transients, such as temporal coincidence of explosion epoch with the IceCube timestamp. We found only one transient that had properties worthy of a specific follow-up. In the Pan-STARRS1 imaging for IceCube-160427A (probability to be of astrophysical origin of ∌\sim50 %), we found a SN PS16cgx, located at 10.0' from the nominal IceCube direction. Spectroscopic observations of PS16cgx showed that it was an H-poor SN at z = 0.2895. The spectra and light curve resemble some high-energy Type Ic SNe, raising the possibility of a jet driven SN with an explosion epoch temporally coincident with the neutrino detection. However, distinguishing Type Ia and Type Ic SNe at this redshift is notoriously difficult. Based on all available data we conclude that the transient is more likely to be a Type Ia with relatively weak SiII absorption and a fairly normal rest-frame r-band light curve. If, as predicted, there is no high-energy neutrino emission from Type Ia SNe, then PS16cgx must be a random coincidence, and unrelated to the IceCube-160427A. We find no other plausible optical transient for any of the five IceCube events observed down to a 5σ\sigma limiting magnitude of m∌22m \sim 22 mag, between 1 day and 25 days after detection.Comment: 20 pages, 6 figures, accepted to A&

    Book Reviews

    Get PDF
    With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than 102810^{28} s at 90% CL for dark matter masses above 10 TeV

    Differential limit on the extremely-high-energy cosmic neutrino flux in the presence of astrophysical background from nine years of IceCube data

    Get PDF
    We report a quasi-differential upper limit on the extremely-high-energy (EHE) neutrino flux above 5×1065\times 10^{6} GeV based on an analysis of nine years of IceCube data. The astrophysical neutrino flux measured by IceCube extends to PeV energies, and it is a background flux when searching for an independent signal flux at higher energies, such as the cosmogenic neutrino signal. We have developed a new method to place robust limits on the EHE neutrino flux in the presence of an astrophysical background, whose spectrum has yet to be understood with high precision at PeV energies. A distinct event with a deposited energy above 10610^{6} GeV was found in the new two-year sample, in addition to the one event previously found in the seven-year EHE neutrino search. These two events represent a neutrino flux that is incompatible with predictions for a cosmogenic neutrino flux and are considered to be an astrophysical background in the current study. The obtained limit is the most stringent to date in the energy range between 5×1065 \times 10^{6} and 5×10105 \times 10^{10} GeV. This result constrains neutrino models predicting a three-flavor neutrino flux of $E_\nu^2\phi_{\nu_e+\nu_\mu+\nu_\tau}\simeq2\times 10^{-8}\ {\rm GeV}/{\rm cm}^2\ \sec\ {\rm sr}at at 10^9\ {\rm GeV}$. A significant part of the parameter-space for EHE neutrino production scenarios assuming a proton-dominated composition of ultra-high-energy cosmic rays is excluded.Comment: The version accepted for publication in Physical Review

    Neutrinos below 100 TeV from the southern sky employing refined veto techniques to IceCube data

    Get PDF
    Many Galactic sources of gamma rays, such as supernova remnants, are expected to produce neutrinos with a typical energy cutoff well below 100 TeV. For the IceCube Neutrino Observatory located at the South Pole, the southern sky, containing the inner part of the Galactic plane and the Galactic Center, is a particularly challenging region at these energies, because of the large background of atmospheric muons. In this paper, we present recent advancements in data selection strategies for track-like muon neutrino events with energies below 100 TeV from the southern sky. The strategies utilize the outer detector regions as veto and features of the signal pattern to reduce the background of atmospheric muons to a level which, for the first time, allows IceCube searching for point-like sources of neutrinos in the southern sky at energies between 100 GeV and several TeV in the muon neutrino charged current channel. No significant clustering of neutrinos above background expectation was observed in four years of data recorded with the completed IceCube detector. Upper limits on the neutrino flux for a number of spectral hypotheses are reported for a list of astrophysical objects in the southern hemisphere.Comment: 19 pages, 17 figures, 2 table

    A Search for Neutrino Emission from Fast Radio Bursts with Six Years of IceCube Data

    Get PDF
    We present a search for coincidence between IceCube TeV neutrinos and fast radio bursts (FRBs). During the search period from 2010 May 31 to 2016 May 12, a total of 29 FRBs with 13 unique locations have been detected in the whole sky. An unbinned maximum likelihood method was used to search for spatial and temporal coincidence between neutrinos and FRBs in expanding time windows, in both the northern and southern hemispheres. No significant correlation was found in six years of IceCube data. Therefore, we set upper limits on neutrino fluence emitted by FRBs as a function of time window duration. We set the most stringent limit obtained to date on neutrino fluence from FRBs with an E−2E^{-2} energy spectrum assumed, which is 0.0021 GeV cm−2^{-2} per burst for emission timescales up to \textasciitilde102^2 seconds from the northern hemisphere stacking search.Comment: 15 pages, 9 figure
    • 

    corecore