Contributors: Scott W Abbott
... 2017/2018 Inaugural LATN Fellowship Report by Scott Abbott (UTS Library): In 2017 I was awarded one of two inaugural Libraries of the Australian Technology Network (LATN) Fellowships. My submission was to attend the 9th Conference of the Open Access Scholarly Publishers Association (#COASP9) in Lisbon, Portugal and meet with research industry, political and other thought leaders in global scholarly publishing and to write a report outlining my findings. This webinar is one avenue through which I will be sharing those findings and the ultimate recommendations based on my research and meetings, including those with: Jean-Claude Burgelman (Snr. European Commission Officer for European Open Science Policy Platform) Liz Allen (Director Strategic Initiatives, F1000) Robert Kiley and David Carr (Open Research Funding, Wellcome Trust, U.K.) David Prosser (Executive Director, Research Libraries U.K.) Lara Speicher (Manager, UCL Press) Peter Suber (Leading Open Access advocate and Senior Researcher at the Berkman Klein Center for Internet & Society, Director of the Harvard Office for Scholarly Communication and Director of the Harvard Open Access Project (HOAP)) Kristen Ratan (co founder of the Collaborative Knowledge Foundation or CoKo - an open source infrastructure community) As a result of these conversations and research, in this webinar I will: 1. discuss the idea of a 4-year (conditional) infrastructure project to help make Australian tax-payer funded research open and F.A.I.R. in the manner of a growing number of major funders across the globe including the European Commission. And, 2. Discuss the long term vision for the open access movement more broadly by highlighting the call for a coordinated, collectively funded response to the scholarly communications crisis
Contributors: Irvin C Mull, MS
... This project uses Zillow publicly released data to show the trends of the rental housing market in Washington D.C. The project primarily looks at market trends after the 2008 recession. Rental Price by State- This visualization shows the rental price by state. The graph shows all 50 states and DC ranked in ascending order by the average rental price in that state. Median Rental Price Per Square Foot- This visualization shows the median renal price per square foot. This graph shows the national median rental price per square foot by the years available after the housing bust. Median Rental Price Per Square Foot1- This visualization shows the median renal price per square foot. This graph shows DC's median rental price per square foot by the year after the housing bust. DC Rental Price- This visualization shows DC's Median Rental Price. This graph shows the Median Rental Price by year for the years after the available housing bust.
Contributors: Valassi, Andrea
... Presentation at the 2nd Inter-Experimental LHC Machine Learning Working Group (IML) Workshop on 11 April 2018 (https://indico.cern.ch/event/668017/contributions/2947015/ and https://cds.cern.ch/record/2312462).
Contributors: FORCE11 Scholarly Commons Working Group
... Materials (slides, notes, audio recording, video recording) from an interactive webinar on the activities of the FORCE11 Scholarly Commons Working Group on Friday, December 8th at 9am PST. The working group has been considering the question: Are we ready to define the scholarly commons? The working group and its steering committee has been active for 2 years and recently presented at the FORCE2017 conference in Berlin. During the webinar we would like to... give an overview of results and discussion of the sessions in Berlin; share where each of our 4 subgroups/themes stand and discuss with you where to go next, with concrete future actions in which you can participate; collect your input and have a round of open discussions. More information on the FORCE11 Scholarly Commons initiative: web: https://scholarlycommons.org/ twitter: https://twitter.com/ScholrlyCommons forum: http://www.force11.org/scholarly-commons/discussion-forum email: email@example.com preprint :The Scholarly Commons - principles and practice to guide research communication: https://doi.org/10.17605/OSF.IO/6C2XT
Contributors: Galan, Giselle
... The standard flare model predicts the presence of a termination shock located above the flare loop tops, however terminations shocks have not yet been well observed. We analyze flare observations by the Interface Region Imaging Spectrograph (IRIS), which provides cotemporal UV imaging and spectral data. Specifically, we study plasma emissions in the Fe XXI line, formed at the very hot plasma temperatures in flares (> ~10 MK). Imaging observations that point to shocks include fast hot reconnection downflows above the loop tops and localized dense, bright plasma at the loop tops; spectral signatures that suggest shocks in the locality of the loop tops include redshifts and nonthermal broadening of the Fe XXI line. We identify possibly significant redshifts in some on-disk flare events observed by IRIS. Redshifts are observed in the vicinity of the bright loop top source that is thought to coincide with the site of the shock. In these events, the Fe XXI emissions at the time of the redshifted structures are dominated by at the at-rest components. The much more less intense redshifted components are broader, with velocities of ~200 km/s. The spatial location of these shifts might indicate plasma motions and speeds indicative of termination shocks.
Contributors: Belmes, Kimberley B.
... UV bursts are compact brightenings in active regions that appear in UV images. They are identified through three spectroscopic features: (1) broadening and intensification of NUV/FUV emission lines, (2) the presence of optically thin Si IV emission, and (3) the presence of absorption features from cool metallic ions. Properties (2) and (3) imply that bursts exist at transition region temperatures (≥ 80,000 K) but are located in the cooler lower chromosphere (~ 5,000 K). Their energetic and dynamical properties remain poorly constrained. Improving our understanding of this phenomena could help us further constrain the energetic and dynamical properties of the chromosphere, as well as give us insight into whether or not UV bursts contribute to chromospheric and/or coronal heating. We analyzed the time evolution of UV bursts using spectral data from the Interface Region Imaging Spectrograph (IRIS). We inspected Si IV 1393.8 Å line profiles for Ni II 1393.3 Å absorption features to look for signs of heating. Weakening of absorption features over time could indicate heating of the cool ions above the burst, implying that thermal energy from the burst could rapidly conduct upward through the chromosphere. To detect the spectral profiles corresponding to bursts, we applied a four-parameter Gaussian fit to every profile in each observation and took cuts in parameter space to isolate the bursts. We then manually reviewed the remaining profiles by looking for a statistically significant appearance of Ni II 1393.3 Å absorption. We quantified these absorption features by normalizing the Si IV 1393.8 Å emission profiles and measuring the maximum fractional extinction in each. Our preliminary results indicate that Ni II 1393.3 Å absorption may undergo a cycle of strengthening and weakening throughout a burst’s lifetime. However, further investigation is needed for confirmation.
Contributors: King, Carson
... A coronal dimming is an event that takes place in the sun’s atmosphere, in which a patch of bright plasma seemingly disappears leaving a dark spot. These events are often associated with other solar phenomena such as flares and coronal mass ejections. Over the lifetimes of the SDO/AIA and Hinode/XRT telescopes many of these dimmings have been observed, however very few have been studied using XRT data. For this project one event was selected, and the goal was to measure how the area of the dimming region behaved over time in relation to other events in the area. In doing this, a new objective method for determining a threshold between the dimming region and the surrounding area was developed which can now be used to analyze the area of almost any dimming region. After comparing the region’s behavior over multiple wavelengths, our results support the common theory that these dimmings are caused by an evacuation of plasma due to opening magnetic field lines, rather than a sudden temperature change.
Contributors: Georgiadi Alexander et al., Androsov Alexey, Rossi Angelo and Unnithan Vikram, Chetverova Antonina et al., Reuter Balthasar and Aizinger Vadym, Koch Boris, Flores Hauke et al., Luneva Maria et al., Koldunov Nikolay, Hellmann Sebastian et al.
... Workshop ''East Siberian Shelf: observations, data analysis, modelling efforts", LenaDNM project, summary 7-9 of Dec, 2016
Development of Real-Time Image Stabilization and Control Systems for an Airborne Infrared Spectrometer
Contributors: Fedeler, Samuel
... The total solar eclipse of August 21, 2017 offers a unique opportunity for study of the infrared solar corona. The Airborne Infrared Spectrometer (AIR-Spec), currently under development, is an infrared telescope and spectrometer that will search for several magnetically sensitive coronal emission lines between 1.4 and 4 micrometers. This instrument will be the first to observe several of these lines, and the measurement campaign will determine whether any lines may be useful for future direct observations of the coronal magnetic field. AIR-Spec will be mounted on an NSF/NCAR Gulfstream V jet and will observe the eclipse from an altitude greater than 14.9 km, above the bulk of IR-absorbing atmospheric water vapor. To ensure that the images taken for analysis have adequate spatial resolution, the AIR-Spec line-of-sight must be stabilized to 2 arc-seconds over a 1 second exposure time. Image stabilization is achieved by using a fiber-optic gyroscope to measure aircraft rotation and a fast-steering mirror to adjust the line-of-sight accordingly. The stabilization algorithm runs in a programmable automation controller, which interfaces with the gyroscope and mirror. Software was developed to implement the stabilization algorithm in the controller and to integrate the controller with a user interface, allowing for data display and logging, user guided attitude calibration, and manual control of the fast-steering mirror. This software is currently being used in lab testing and will be operational during test flights in Fall 2016 and Spring 2017 and the eclipse flight in Summer 2017. The current system stabilizes images to 2 arc-seconds in 60 percent of 1 second camera exposures.
Contributors: Rimple, Remington
... Coronal Mass Ejections, or CMEs, are solar events that eject plasma and magnetic flux into interplanetary space. Contemporary sources have noted that the onset of CMEs are caused by some instability of the coronal magnetic field, and further allows heating of plasma upon expansion. Additionally, plasma that leaves the lower solar corona does not remain in ionization equilibrium due to the rapid expansion of plasma. We investigate the evolution of charge states of CME plasma using non-equilibrium ionization (NEI) modeling. These NEI models include radiative cooling and serve as baseline studies for special cases where no heat is being added to the plasma. Each of the simulated CMEs have initial conditions characteristic of active regions. Various function inputs, such as initial temperature, density and final velocity, allow us to examine the influence of certain parameters on the charge state evolution. The results of our project show that plasma originating from active regions display charge state evolutions substantially dependent on initial density and temperature. The CMEs starting with higher plasma density often show an abundance of lower charge states above the freeze-in height. Simulations starting from higher temperatures often show abundance peaks at charge states with closed electron shells.