OSSOS XXV: Large Populations and Scattering-Sticking in the Distant Transneptunian Resonances

There have been 77 TNOs discovered to be librating in the distant transneptunian resonances (beyond the 2:1 resonance, at semimajor axes greater than 47.7~AU) in four well-characterized surveys: the Outer Solar System Origins Survey (OSSOS) and three similar prior surveys. Here we use the OSSOS Survey Simulator to measure their intrinsic orbital distributions using an empirical parameterized model. Because many of the resonances had only one or very few detections, $j$:$k$ resonant objects were grouped by $k$ in order to have a better basis for comparison between models and reality. We also use the Survey Simulator to constrain their absolute populations, finding that they are much larger than predicted by any published Neptune migration model to date; we also find population ratios that are inconsistent with published models, presenting a challenge for future Kuiper Belt emplacement models. The estimated population ratios between these resonances are largely consistent with scattering-sticking predictions, though further discoveries of resonant TNOs with high-precision orbits will be needed to determine whether scattering-sticking can explain the entire distant resonant population or not.Comment: Accepted for publication in Planetary Sciences Journal (PSJ

A continuous source of translationally cold dipolar molecules

The Stark interaction of polar molecules with an inhomogeneous electric field is exploited to select slow molecules from a room-temperature reservoir and guide them into an ultrahigh vacuum chamber. A linear electrostatic quadrupole with a curved section selects molecules with small transverse and longitudinal velocities. The source is tested with formaldehyde (H2CO) and deuterated ammonia (ND3). With H2CO a continuous flux is measured of approximately 10^9/s and a longitudinal temperature of a few K. The data are compared with the result of a Monte Carlo simulation.Comment: 4 pages, 4 figures v2: small changes in the abstract, text and references. Figures 1 & 2 regenerated to prevent errors in the pd

A Storage Ring for Neutral Atoms

We have demonstrated a storage ring for ultra-cold neutral atoms. Atoms with mean velocities of 1 m/s corresponding to kinetic energies of ~100 neV are confined to a 2 cm diameter ring by magnetic forces produced by two current-carrying wires. Up to 10^6 atoms are loaded at a time in the ring, and 7 revolutions are clearly observed. Additionally, we have demonstrated multiple loading of the ring and deterministic manipulation of the longitudinal velocity distribution of the atoms using applied laser pulses. Applications of this ring include large area atom interferometers and cw monochromatic atomic beam generation.Comment: 4 pages, 5 figure

Quo vadis, cold molecules? - Editorial review

We give a snapshot of the rapidly developing field of ultracold polar molecules abd walk the reader through the papers appearing in this topical issue

Open Data Exposed

This book is about open data, i.e. data that does not have any barriers in the (re)use. Open data aims to optimize access, sharing and using data from a technical, legal, financial, and intellectual perspective. Data increasingly determines the way people live their lives today. Nowadays, we cannot imagine a life without real-time traffic information about our route to work, information of the daily news or information about the local weather. At the same time, citizens themselves now are constantly generating and sharing data and information via many different devices and social media systems. Especially for governments, collection, management, exchange, and use of data and information have always been key tasks, since data is both the primary input to and output of government activities. Also for businesses, non-profit organizations, researchers and various other actors, data and information are essential

Evaluating the application of the multi-view spatial data infrastructure assessment framework

As a response to the growing interest in assessing Spatial Data Infrastructures (SDIs) the Multi-view SDI assessment framework has been proposed. The Multi-view SDI assessment framework collects multiple assessment approaches and methods with the aim to assess many different aspects of SDI in a comprehensive and unbiased way. Despite the potential strengths of the framework, its complex design raises concerns about its usability and applicability for SDI assessment. In this article we evaluate the application of the Multi-view SDI assessment framework. In addition, we ask the potential users of the framework to evaluate its applicability to assess SDIs. The results show that the framework could be applied to 21 National SDIs. Evaluation of the application process reveals that the completeness of assessment data and time needed to measure indicators depends strongly on the assessment methods used. It is recommended to use those methods that need less time to measure assessment indicators. The results also show that a significant part of the measurements could not be done due to survey questions not being filled in by the respondents. The results also show that the users tend to agree with the applicability of the Multi-view SDI assessment framework to assess SDI

Evaluating the application of the multi-view spatial data infrastructure assessment framework

As a response to the growing interest in assessing Spatial Data Infrastructures (SDIs) the Multi-view SDI assessment framework has been proposed. The Multi-view SDI assessment framework collects multiple assessment approaches and methods with the aim to assess many different aspects of SDI in a comprehensive and unbiased way. Despite the potential strengths of the framework, its complex design raises concerns about its usability and applicability for SDI assessment. In this article we evaluate the application of the Multi-view SDI assessment framework. In addition, we ask the potential users of the framework to evaluate its applicability to assess SDIs. The results show that the framework could be applied to 21 National SDIs. Evaluation of the application process reveals that the completeness of assessment data and time needed to measure indicators depends strongly on the assessment methods used. It is recommended to use those methods that need less time to measure assessment indicators. The results also show that a significant part of the measurements could not be done due to survey questions not being filled in by the respondents. The results also show that the users tend to agree with the applicability of the Multi-view SDI assessment framework to assess SDIs.status: publishe

A systematic review of the impacts of active military service on sexual and reproductive health outcomes among servicewomen and female veterans of armed forces

There are clear evidence gaps relating to health outcomes of servicewomen and female military veterans (here included as servicewomen). In addition to physical health, mental wellbeing and maternal health, there is limited literature regarding their sexual and reproductive health, particularly within an international context.1 Internationally, a recent increased focus on the health of servicewomen and female veterans re ects both increased numbers of females in the military and removal of duty restrictions. Consequently, speci c policies addressing pregnancy, breastfeeding and return to work have been developed, although research evidence to inform these is lacking. Identifying available evidence and mapping evidence gaps is critical to develop policies that will support the future female military workforce. Therefore, as a basis to address these emerging issues, an evidence mapping review was conducted to identify reproductive and sexual health issues faced by servicewomen, and establish the evidence gaps and target areas for future research.E. Lawrence-Wood, S. Kumar, S. Crompvoets, B. G. Fosh, H. Rahmanian, L. Jones, S. Neuhau