Big Storage, Little Budget

Daniel Andresen, Ph.D. is an associate professor of Computing & Information Sciences at Kansas State University and Director of the Institute for Computational Research. His research includes embedded and distributed computing, biomedical systems, and high performance scientific computing. Dr. Andresen coordinates the activities of the K-State research computing cluster, Beocat, and advises the local chapter of the Association for Computing Machinery (ACM). He is a National Science Foundation CAREER award winner, and has been granted research funding from the NSF, the Defense Advanced Research Projects Agency (DARPA), and industry. He is a member of the Association for Computing Machinery, the IEEE Computer Society, the Electronic Frontier Foundation, and the American Society for Engineering Education. ____________________________________________________________________________________________ Kyle Hutson has been involved with Linux system administration since 1994. He received his bachelor's degree from Kansas State University in computer engineering in 1995. He has worked in non-profit, public sector, and public sector IT services, including several years as a small business IT consultant. Kyle joined Kansas State University's HPC team in 2012. ____________________________________________________________________________________________ Adam Tygart has been an HPC system administrator since 2008. He has been using Linux since high school. Beocat, Kansas State University's Gentoo-based HPC cluster, was implemented in its current form by Adam while still an undergraduate. ____________________________________________________________________________________________ Presented at the 2015 Oklahoma Supercomputing Symposium at the University of Oklahoma Wednesday September 23 2015, 8:00am-5:00pm Thurman J. White Forum Building, 1704 Asp Ave., Norman OK 73072Kansas State University's HPC cluster was running out of storage space last year. Vendors of traditional HPC storage solutions were either too expensive to be feasible or too little capacity to be of long-term use. The system that ended up providing the best storage capacity for the available budget was Ceph, an open-source project that provides storage striped across many commodity servers. This session is a case study of the pros and cons of our implementation of a 1.5 PB Ceph-based storage cluster, discussing the history of network-based filesystems, including why our previous Gluster-based was no longer suitable. Questions and discussion are encouraged.University of Oklahoma / The University of Oklahoma Department of Information Technology / The University of Oklahoma Supercomputing Center for Education and Research / Kansas State UniversityN

The "Persuadable Middle" on Same-Sex Marriage: Formative Research to Build Support among Heterosexual College Students

Same-sex marriage is a controversial policy issue that affects the welfare of gay and lesbian couples throughout the USA. Considerable research examines opinions about same-sex marriage; however, studies have not investigated the covariates of the “persuadable middle”— those individuals who are neutral or unsure about their views. This group of people is often the target of same-sex marriage campaigns, yet they have received no empirical attention.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/89607/1/Woodford et al 2011 Persuadable Middle.pd

Sex differences in fatigability following exercise normalised to the power-duration relationship

Due to morphological differences, females demonstrate greater fatigue resistance of locomotor muscle during single‐limb and whole‐body exercise modalities. Whilst females sustain a greater relative intensity of single‐limb, isometric exercise than males, limited investigation has been performed during whole‐body exercise. Accordingly, this study established the power‐duration relationship during cycling in 18 trained participants (8 females). Subsequently, constant‐load exercise was performed at critical power (CP)‐matched intensities within the heavy and severe domains, with the mechanisms of fatigability assessed via non‐invasive neurostimulation, near‐infrared spectroscopy, and pulmonary gas exchange during and following exercise. Relative CP (72±5 vs. 74±2% Pmax, p = 0.210) and curvature constant (51±11 vs. 52±10 J·Pmax−1, p = 0.733) of the power‐duration relationship were similar between males and females. Subsequent heavy (p = 0.758) and severe intensity (p = 0.645) exercise time to task failures were not different between sexes. However, females experienced lesser reductions in contractile function at task failure (p≤0.020), and greater vastus lateralis oxygenation (p≤0.039) during both trials. Reductions in voluntary activation occurred following both trials (p<0.001), but were less in females following the heavy trial (p = 0.036). Furthermore, during the heavy‐intensity trial only, corticospinal excitability was reduced at the cortical (p = 0.020) and spinal (p = 0.036) levels, but these reductions were not sex‐dependent. Other than a lower respiratory exchange ratio in the heavy trial for females (p = 0.039), no gas exchange variables differed between sexes (p≥0.052). Collectively, these data demonstrate that whilst the relative power‐duration relationship is not different between males and females, the mechanisms of fatigability during CP‐matched exercise above and below critical power are mediated by sex

Cleo Stiles Bryan: A conversation with Karan Tygart and Kyle Bryan

Cleo Stiles Bryan was born in 1917 in Snyder, Oklahoma. For a short time Cleo taught school in Marietta, Oklahoma and then in 1939 she began a thirty-five year career with Cooperative Extension, retiring in 1973. Following retirement, Cleo would go on to publish three editions of her cookbook, Seems Like I Done It This A-Way (1976, 1980, 1989)

Analysis of Treatment Dose for Treatment of Speech Sound Disorder

Treatment dose for speech sound disorders (SSD) has not been thoroughly investigated. This information is critical to treatment planning for speech-language pathologists. The purpose of the present study was to examine the cumulative treatment dose required for children with SSD to reach 25%, 50%, and 75% accuracy on their treatment sound during a single session. The present study is a retrospective analysis of treatment data gathered in a previous study of two age groups of children – one group between the ages of 4 and 5 and the other between the ages of 7 and 8. This data is a count of each participant’s correct and incorrect productions of their target sound over the course of each treatment session. The results show that there is no significant difference between the mean dose required for both groups of children to achieve 25%, 50%, and 75% accuracy; dose varied greatly between participants. Both age groups require a relatively similar treatment dose to achieve accuracy on their respective treatment sounds