ICE 2.0: Restructuring and Growing an Instructional HPC Cluster Coulter, J. Eric; Weiner, Michael D.; Jezghani, Aaron ...
Proceedings of the SC '23 Workshops of The International Conference on High Performance Computing, Network, Storage, and Analysis,
11/2023
Conference Proceeding
Odprti dostop
The Partnership for an Advanced Computing Environment (PACE) at Georgia Tech (GT) has been running two campus-wide cluster resources available for academic courses and workshops for five years. The ...initial design focused on creating a federated resource for a wide range of educational topics, based on a PACE and College of Computing (COC) partnership. Due to funding, this took the form of separate resources, one funded by PACE, and another by COC. These "Instructional Cluster Environments", PACE-ICE and COC-ICE, became very popular with instructors at GT but led to a high maintenance cost due to the split nature of the environments. With the transition to the Slurm scheduler, PACE collaborated with COC to merge the two clusters into one, ICE. This work details the strategies used to sensibly merge the two production systems, including the storage architecture, shared system policies, and scheduler priority configurations that honor funding complexities.
Throughout history, the African-American church has played a vital role in social, political and educational arenas. Often viewed as the cornerstone of the African-American community, the ...African-American church is an excellent medium to promote health prevention and promotion interventions. This article identifies several elements for the facilitation of this process, identifies the role of culture within this concept and explores the history of the African-American church as it relates to health promotion activities. The African-American church has become a valuable mechanism by which health professionals are able to reach underserved populations.
We utilize multiple-zone, post-processing element synthesis calculations to determine the impact of recent ORNL radioactive ion beam measurements on predictions of novae and X-ray burst simulations. ...We also assess the correlations between all relevant reaction rates and all synthesized isotopes, and translate nuclear reaction rate uncertainties into abundance prediction uncertainties, via a unique Monte Carlo technique.
To study the functional significance or transient coronary occlusion on systolic and diastolic left ventricular function relative to the anatomic site of occlusion, first-pass radionuclide ...angiography with a mobile multiwire gamma camera using tantalum-178 (dose activity ≤84 mCi/elution) was performed in 46 patients undergoing balloon coronary angioplasty. First-pass images were acquired immediately before angioplasty and during the last 30 s of a 60-s balloon inflation in 23 left anterior descending arteries, 18 right coronary arteries, 8 circumflex arteries and 5 diagonal coronary arteries.
Occlusion of the left anterior descending artery resulted in significant decreases in left ventricular ejection fraction (54.6 ± 12.7% to 32.3 ± 10.6%, p = 0.0001) and peak filling rate (2.48 ± 0.68 to 1.75 ± 0.64 end-diastolic volumes/s, p = 0.0001), accompanied by severe abnormalities in regional function and left ventricular dilation. Right coronary artery occlusion caused inferior hypokinesia, but did not significantly change left ventricular ejection fraction (48.5 ± 12.4% vs. 45.8 ± 12.5%, p = NS) or peak filling rate (2.05 ± 0.81 vs. 2.09 ± 0.81 end-diastolic volumes/s, p = NS). Circumflex artery occlusion resulted in mild wall motion deterioration and a borderline decrease in ejection fraction (54.7 ± 11.4% to 50.5 ± 12%, p = 0.057). Diagonal artery occlusion did not cause significant changes in left ventricular ejection fraction or filling rate. The decrease in left ventricular ejection fraction during coronary occlusion was 9 ± 25% and 27 ± 22%, respectively, in those arteries with and without collateral supply (p = 0.052).
These data provide strong evidence for the critical importance of the left anterior descending artery and the secondary role of the other coronary arteries in maintaining global systolic and diastolic left ventricular function and suggest a protective role of collateral vessels during coronary occlusion.
Preparation of recombinant human Hsp10 Steede, N K; Guidry, J J; Landry, S J
Methods in molecular biology (Clifton, N.J.),
2000, Letnik:
140
Journal Article
Microlasers are of ample interest for advancing quantum chaos studies at the intersection of wave dynamics and geometric optics in resonators. However, the mode structures of three-dimensional ...microlasers without rotational symmetry remain largely unexplored due to fabrication limitations. Previous studies of such cavities revealed lasing modes localized on periodic orbits exclusively confined to a single plane. In this work, we report on the characterization of pyramidal, polymer-based microlasers and demonstrate that the lasing modes are localized on a genuine three-dimensional periodic orbit. The consequences on the laser features are further discussed, in particular stability and polarization issues.
Polypeptide-based drug delivery has become increasingly important in the field of nanomedicine, with N-carboxyanhydride (NCA) polymerization representing a versatile approach toward their synthesis. ...Organocatalytic polymerization conditions have been developed to access moderate molecular weight polypeptides with narrow chain length distributions by adding acidic additives to triethylamine catalyzed NCA polymerizations. This method produces polypeptides of predictable sizes and is operationally simple, allowing the synthesis of polypeptides with different targeted sizes for use in a variety of applications including drug delivery.
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