The SARAO MeerKAT 1.3 GHz Galactic Plane Survey

We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half of the Galactic Plane (251○ ≤l ≤ 358○ and 2○ ≤l ≤ 61○ at |b| ≤ 1 5). SMGPS is the largest, most sensitive and highest angular resolution 1 GHz survey of the Plane yet carried out, with an angular resolution of 8″ and a broadband RMS sensitivity of ∼10–20 μJy beam−1. Here we describe the first publicly available data release from SMGPS which comprises data cubes of frequency-resolved images over 908–1656 MHz, power law fits to the images, and broadband zeroth moment integrated intensity images. A thorough assessment of the data quality and guidance for future usage of the data products are given. Finally, we discuss the tremendous potential of SMGPS by showcasing highlights of the Galactic and extragalactic science that it permits. These highlights include the discovery of a new population of non-thermal radio filaments; identification of new candidate supernova remnants, pulsar wind nebulae and planetary nebulae; improved radio/mid-IR classification of rare Luminous Blue Variables and discovery of associated extended radio nebulae; new radio stars identified by Bayesian cross-matching techniques; the realisation that many of the largest radio-quiet WISE H II region candidates are not true H II regions; and a large sample of previously undiscovered background H I galaxies in the Zone of Avoidance

Analysis of ante mortem trauma in three modern skeletal populations

When archaeological skeletons are assessed, the prevalence (and patterns of bone involvement) of trauma is important. The number and pattern of fractures can be used to gain insight into the occurrence of interpersonal violence, workload and living conditions. However, the question remains as to how these results should be interpreted—such as what constitutes high or low levels of trauma? The aim of this study was to investigate the occurrence of trauma in a population of modern Greeks living in Crete, as well as South African (SA) whites and blacks in the Pretoria Bone and Raymond Dart collections. The sample comprised mostly of older individuals (n¼90–100 within a sex-population group). Each skeleton was studied for healed trauma. For the vertebrae, only spondylolysis was assessed. In the Greek sample, it was found that 42% of the males and 46% of females had at least one fracture, with corresponding figures of 63 and 44% for SA whites and 83 and 69% for SA blacks. Radius, rib and femur fractures were most common in Greeks, with skull, radius and ribs most common in SA whites and skull, ulna and ribs in SA blacks. These prevalences of trauma are high, but the composition of the samples (mostly of lower socio-economic origin) should be kept in mind. It may also be questioned whether these individuals reflect the society as a whole. It seems that the fractures in Greeks are mostly related to old age due to falls and accidents (radius and hip fractures), while the SA black sample reflects high prevalences of interpersonal violence (such as cranial vault and ulna fractures). The SA white sample follows a comparatively moderate pattern of trauma. These comparative figures may be useful when assessing trauma in other skeletal populations.NRF and Department of Anatom

Knowledge management enablers, knowledge sharing and research collaboration: A study of knowledge management at research universities in Malaysia

Universities need to be aware of the impact of knowledge management (KM) in order to become world-class academic institutions. This research fills an unexplored gap in regards to the impact of KM enablers (i.e. trust, knowledge self-efficacy, reciprocal benefits, top management support, organizational rewards, organizational culture, KM system infrastructure and KM system quality, openness in communication, and face-to-face (F2F) interactive communication) on knowledge sharing (KS) that supports research collaboration by faculty members. No prior research has focused on the impact of KM enablers that influence research university members to share knowledge. A self-administered questionnaire was employed on members of five research universities in Malaysia to collect data; subsequently, 421 usable responses were analysed using partial least squares path modelling. KS by members was influenced by trust, organizational rewards, organizational culture, KM system quality, openness in communication, and F2F interactive communication; in addition, research collaboration was strongly influenced by KS. The KM–KS–collaboration model shows a KM influence of individual–organizational–technological–communication constructs that encourages KS by members to support research collaboration

經濟學全集「統計學」を讀む

39 pages, 11 captioned figures, 8 tables (5 of them in Appendix A), authors from page 33, submitted to JHEP, figures at http://aliceinfo.cern.ch/ArtSubmission/node/2359 ; see paper for full list of authorsInternational audienceThe measurement of prompt D-meson production as a function of multiplicity in p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with the ALICE detector at the LHC is reported. D$^0$, D$^+$ and D$^{*+}$ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range $-0.96< y_{\mathrm{cms}}<0.04$ and transverse momentum interval $1<p_{\rm T}<24$ GeV/$c$. The multiplicity dependence of D-meson production is examined by either comparing yields in p-Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions, scaled by the number of binary nucleon-nucleon collisions (nuclear modification factor); as well as by evaluating the per-event yields in p-Pb collisions in different multiplicity intervals normalised to the multiplicity-integrated ones (relative yields). The nuclear modification factors for D$^0$, D$^+$ and D$^{*+}$ are consistent with one another. The D-meson nuclear modification factors as a function of the zero-degree energy are consistent with unity within uncertainties in the measured $p_{\rm T}$ regions and event classes. The relative D-meson yields, calculated in various $p_{\rm T}$ intervals, increase as a function of the charged-particle multiplicity. The results are compared with the equivalent pp measurements at $\sqrt{s}=7$ TeV as well as with EPOS~3 calculations