539 research outputs found

    Factors Influencing Student-athlete Choice of Institution

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    The purpose of this study was to determine the factors that influenced prospective student-athletes to attend East Tennessee State University. Using a qualitative research design, interviews were conducted with 36 freshman scholarship student-athletes. Participants represented student-athletes from each sport. A literature review covered the history of intercollegiate athletics, the history of recruiting student-athletes, the process of recruiting student-athletes, and the decline of public perception towards intercollegiate athletics. Results from the interviews were analyzed using inductive analysis. Patterns, themes, and categories of analysis emerged from the data. The data from the interviews were then unitized and categorized. The categorized units were used to formulate grounded theory. The computer software package QSR NUD.IST 4.0 was used for analyzing the data. Results showed that the ETSU campus personnel were the most influential to prospective student-athletes in deciding to attend East Tennessee State University. The coaching staff at ETSU was mentioned by 27 (75%) of the interviewees. Other ETSU campus personnel were mentioned by 18 (50%) of the interviewees. Finally, current team members were mentioned by 16 (44%) of the interviewees. Facilities located at ETSU were also influential to prospective student-athletes. The dormitories were mentioned by 16 (44%) interviewees. The recently renovated athletics weight room was mentioned by 12 (33%) interviewees. Finally, the Memorial Center was mentioned by 10 (28%) of the interviewees as being influential in the decision-making process. Lastly, 15 (42%) of the interviewees mentioned their academic interests were best served by attending East Tennessee State University. The Quillen College of Medicine was a big factor to several interviewees. The reputation of the College of Business was important to a couple of prospective student-athletes. Also, many interviewees mentioned that the size of the university was influential to them academically. There were eight recommendations that emerged from the study. The first is that the ETSU coaching staff should continue to be heavily involved in the recruiting process. Secondly, the coaching staff should recognize that prospective student-athletes find the people at ETSU very helpful and friendly. Prospects should meet as many people on campus as possible. The third involves the information sent to prospects in the form of letters. A series of letters should be developed to highlight the strengths of ETSU, to include: the academic strengths of ETSU, the dormitories, the coaching staff, the athletic facilities, the newly constructed library, the Trip-Cities area, the Southern Conference, the recent success of the individual athletic programs, and the strength of schedule. The fourth is scheduling official visits during times the current team members are on campus. The fifth includes scheduling tours of the athletics facilities, to include a visit to the weight room. The sixth is athletic programs that have experienced recent success should highlight this success as much as possible to prospective student-athletes. The seventh is for the coaching staffs to determine the academic interests of the prospects early in the recruiting process. The last recommendation is that all female prospects tour Luntsford Apartments during the official visits

    Winter mass balance of Drangajökull ice cap (NW Iceland) derived from satellite sub-meter stereo images

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    Sub-meter resolution, stereoscopic satellite images allow for the generation of accurate and high-resolution digital elevation models (DEMs) over glaciers and ice caps. Here, repeated stereo images of Drangajökull ice cap (NW Iceland) from Pléiades and WorldView2 (WV2) are combined with in situ estimates of snow density and densification of firn and fresh snow to provide the first estimates of the glacier-wide geodetic winter mass balance obtained from satellite imagery. Statistics in snow- and ice-free areas reveal similar vertical relative accuracy (<  0.5 m) with and without ground control points (GCPs), demonstrating the capability for measuring seasonal snow accumulation. The calculated winter (14 October 2014 to 22 May 2015) mass balance of Drangajökull was 3.33 ± 0.23 m w.e. (meter water equivalent), with ∼ 60 % of the accumulation occurring by February, which is in good agreement with nearby ground observations. On average, the repeated DEMs yield 22 % less elevation change than the length of eight winter snow cores due to (1) the time difference between in situ and satellite observations, (2) firn densification and (3) elevation changes due to ice dynamics. The contributions of these three factors were of similar magnitude. This study demonstrates that seasonal geodetic mass balance can, in many areas, be estimated from sub-meter resolution satellite stereo images.This study was funded by the University of Iceland (UI) Research Fund. Pleiades images were acquired at research price thanks to the CNES ISIS program (http://www.isis-cnes.fr). The WV2 DEM was obtained through the ArcticDEM project. This work is a contribution to the Rannis grant of excellence project, ANATILS. Collaboration and travels between IES and LEGOS were funded by the Jules Verne research fund and the TOSCA program from the French Space Agency, CNES. This study used the recent lidar mapping of the glaciers in Iceland that was funded by the Icelandic Research Fund, the Landsvirkjun research fund, the Icelandic Road Administration, the Reykjavik Energy Environmental and Energy Research Fund, the Klima-og Luftgruppen (KoL) research fund of the Nordic Council of Ministers, the Vatnajokull National Park, the organization Friends of Vatnajokull, the National Land Survey of Iceland, the Icelandic Meteorological Office and the UI research fund. The ground-based mass balance measurements on Drangajokull have been jointly funded by Orkubu Vestfjarda (Westfjord Power Company), the National Energy Authority (2004-2009) and the Icelandic Meteorological Office (2009-2015).Peer Reviewe

    A survey for near-infrared H2 emission in Herbig Ae/Be stars: emission from the outer disks of HD 97048 and HD 100546

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    We report on a sensitive search for H2 1-0 S(1), 1-0 S(0) and 2-1 S(1) ro-vibrational emission at 2.12, 2.22 and 2.25 micron in a sample of 15 Herbig Ae/Be stars employing CRIRES, the ESO-VLT near-infrared high-resolution spectrograph, at R~90,000. We detect the H2 1-0 S(1) line toward HD 100546 and HD 97048. In the other 13 targets, the line is not detected. The H2 1-0 S(0) and 2-1 S(1) lines are undetected in all sources. This is the first detection of near-IR H2 emission in HD 100546. The H2 1-0 S(1) lines observed in HD 100546 and HD 97048 are observed at a velocity consistent with the rest velocity of both stars, suggesting that they are produced in the circumstellar disk. In HD 97048, the emission is spatially resolved and it is observed to extend at least up to 200 AU. We report an increase of one order of magnitude in the H2 1-0 S(1) line flux with respect to previous measurements taken in 2003 for this star, which suggests line variability. In HD 100546 the emission is tentatively spatially resolved and may extend at least up to 50 AU. Modeling of the H2 1-0 S(1) line profiles and their spatial extent with flat keplerian disks shows that most of the emission is produced at a radius >5 AU. Upper limits to the H2 1-0 S(0)/ 1-0 S(1) and H2 2-1 S(1)/1-0 S(1) line ratios in HD 97048 are consistent with H2 gas at T>2000 K and suggest that the emission observed may be produced by X-ray excitation. The upper limits for the line ratios for HD 100546 are inconclusive. Because the H2 emission is located at large radii, for both sources a thermal emission scenario (i.e., gas heated by collisions with dust) is implausible. We argue that the observation of H2 emission at large radii may be indicative of an extended disk atmosphere at radii >5 AU. This may be explained by a hydrostatic disk in which gas and dust are thermally decoupled or by a disk wind caused by photoevaporation.Comment: Accepted by A&A. 16 pages, 7 figure

    Freshwater flux to Sermilik Fjord, SE Greenland

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    Terrestrial inputs of freshwater flux to Sermilik Fjord, SE Greenland, were estimated, indicating ice discharge to be the dominant source of freshwater. A freshwater flux of 40.4 &amp;plusmn; 4.9&amp;times;10&lt;sup&gt;9&lt;/sup&gt; m&lt;sup&gt;3&lt;/sup&gt; y&lt;sup&gt;−1&lt;/sup&gt; was found (1999–2008), with an 85% contribution originated from ice discharge (65% alone from Helheim Glacier), 11% from terrestrial surface runoff (from melt water and rain), 3% from precipitation at the fjord surface area, and 1% from subglacial geothermal and frictional melting due to basal ice motion. The results demonstrate the dominance of ice discharge as a primary mechanism for delivering freshwater to Sermilik Fjord. Time series of ice discharge for Helheim Glacier, Midgård Glacier, and Fenris Glacier were calculated from satellite-derived average surface velocity, glacier width, and estimated ice thickness, and fluctuations in terrestrial surface freshwater runoff were simulated based on observed meteorological data. These simulations were compared and bias corrected against independent glacier catchment runoff observations. Modeled runoff to Sermilik Fjord was variable, ranging from 2.9 &amp;plusmn; 0.4&amp;times;10&lt;sup&gt;9&lt;/sup&gt; m&lt;sup&gt;3&lt;/sup&gt; y&lt;sup&gt;−1&lt;/sup&gt; in 1999 to 5.9 &amp;plusmn; 0.9&amp;times;10&lt;sup&gt;9&lt;/sup&gt; m&lt;sup&gt;3&lt;/sup&gt; y&lt;sup&gt;−1&lt;/sup&gt; in 2005. The sub-catchment runoff of the Helheim Glacier region accounted for 25% of the total runoff to Sermilik Fjord. The runoff distribution from the different sub-catchments suggested a strong influence from the spatial variation in glacier coverage, indicating high runoff volumes, where glacier cover was present at low elevations

    Adaptive remodeling of the bacterial proteome by specific ribosomal modification regulates Pseudomonas infection and niche colonisation

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    Post-transcriptional control of protein abundance is a highly important, underexplored regulatory process by which organisms respond to their environments. Here we describe an important and previously unidentified regulatory pathway involving the ribosomal modification protein RimK, its regulator proteins RimA and RimB, and the widespread bacterial second messenger cyclic-di-GMP (cdG). Disruption of rimK affects motility and surface attachment in pathogenic and commensal Pseudomonas species, with rimK deletion significantly compromising rhizosphere colonisation by the commensal soil bacterium P. fluorescens, and plant infection by the pathogens P. syringae and P. aeruginosa. RimK functions as an ATP-dependent glutamyl ligase, adding glutamate residues to the C-terminus of ribosomal protein RpsF and inducing specific effects on both ribosome protein complement and function. Deletion of rimK in P. fluorescens leads to markedly reduced levels of multiple ribosomal proteins, and also of the key translational regulator Hfq. In turn, reduced Hfq levels induce specific downstream proteomic changes, with significant increases in multiple ABC transporters, stress response proteins and non-ribosomal peptide synthetases seen for both ΔrimK and Δhfq mutants. The activity of RimK is itself controlled by interactions with RimA, RimB and cdG. We propose that control of RimK activity represents a novel regulatory mechanism that dynamically influences interactions between bacteria and their hosts; translating environmental pressures into dynamic ribosomal changes, and consequently to an adaptive remodeling of the bacterial proteome

    Extensive retreat of Greenland tidewater glaciers 2000-2010

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    Overall mass loss from the Greenland ice sheet nearly doubled during the early 2000s resulting in an increased contribution to sea-level rise, with this step-change being mainly attributed to the widespread frontal retreat and accompanying dynamic thinning of tidewater glaciers. Changes in glacier calving-front positions are easily derived from remotely sensed imagery and provide a record of dynamic change. However, ice-sheet-wide studies of calving fronts have been either spatially or temporally limited. In this study multiple calving-front positions were derived for 199 Greenland marine-terminating outlet glaciers with width greater than 1 km using Landsat imagery for the 11-year period 2000–2010 in order to identify regional seasonal and inter-annual variations. During this period, outlet glaciers were characterized by sustained and substantial retreat summing to more than 267 km, with only 11 glaciers showing overall advance. In general, the pattern of mass loss detected by GRACE (Gravity Recovery and Climate Experiment) and other measurements is reflected in the calving record of Greenland glaciers. Our results suggest several regions in the south and east of the ice sheet likely share controls on their dynamic changes, but no simple single control is apparent

    The development of a program engagement theory for group offending behavior programs

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    Offender engagement in group offending behavior programs is poorly understood and under-theorized. In addition, there is no research on facilitators’ engagement. This paper presents the first ever theory to address this gap. A Program Engagement Theory (PET) was derived from a constructivist grounded theory analysis, that accounts for both facilitators’ and offenders’ engagement in group offending behavior programs. Interviews and session observations were used to collect data from 23 program facilitators and 28 offenders (group members). The analysis revealed that group members’ engagement involved shared identities and moving on as a group. In turn, this was dependent on facilitators personalising treatment frameworks and establishing a hook in order to help group members move on. The PET emphasises the importance of considering change during treatment as a process rather than simply a program outcome. Solution-focused programs were more conducive to engagement and the change process than offence-focused programs

    Observational diagnostics of gas in protoplanetary disks

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    Protoplanetary disks are composed primarily of gas (99% of the mass). Nevertheless, relatively few observational constraints exist for the gas in disks. In this review, I discuss several observational diagnostics in the UV, optical, near-IR, mid-IR, and (sub)-mm wavelengths that have been employed to study the gas in the disks of young stellar objects. I concentrate in diagnostics that probe the inner 20 AU of the disk, the region where planets are expected to form. I discuss the potential and limitations of each gas tracer and present prospects for future research.Comment: Review written for the proceedings of the conference "Origin and Evolution of Planets 2008", Ascona, Switzerland, June 29 - July 4, 2008. Date manuscript: October 2008. 17 Pages, 6 graphics, 134 reference

    New Technology in the Supermarket

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    Tracking family expenses through detailed point-of -purchase receipts is a feasible, but overlooked option for many consumers. Extension programming could focus on understanding and using available information from scanning system receipts
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