Longitudinal variations, the opposition effect and monochromatic albedos for Mars

Magnitude at zero phase, phase coefficient, and monochromatic albedo computed for Mars as function of wavelengt

New York City Police Officers\u27 Experiences of the September 11, 2001 Terrorist Attacks: An Existential Psychological Study

The police officers of the NYPD who responded to the scene of the terrorist attacks on the World Trade Center on September 11, 2001 faced a sudden and large-scale catastrophe that caused the deaths of many innocent civilians and threatened their own lives. The present study examines the lived meanings of this experience for three police officers who survived the collapse of the Twin Towers while acting in the performance of their duty. Although a great deal of research has been conducted in the field of psychological trauma, the existential meaning of traumatic events for those that live through them is not well understood. In addition, there is little empirical research that examines the particular nature of traumatic experiences as experienced by police officers in the line of duty. Further, because no disaster such as this, caused intentionally and resulting in such mass-scale devastation and loss of life had ever occurred in the United States, the experience of police officers in living through such an event had not been studied. In order to collect the data for this research I conducted interviews with three police officers who had been at the World Trade Center site when the buildings collapsed. I asked them to describe their experiences on that day in detail. Phenomenological analysis of these interviews revealed several significant lived meanings of the experience for these police officers. The findings were organized into a general structural narrative delineating ten themes of existential importance for the officers. The results reveal that the officers identified strongly with their roles as police officers with the NYPD. They took seriously their dedication to protect and serve the public, and held saving lives as their highest value. Because of this, the officers were especially distressed when they witnessed the deaths of innocent people, those who jumped to their deaths from the burning towers or who were killed on the ground. The officers, typically assuming a position of confidence and power, were helpless to perform their most sacred duty. As the world around them changed so dramatically and so horribly, the officers continued to uphold the value they placed in their duty to help save lives. The findings reveal the importance for the officers of being in the world with others, and participating in a shared humanity. Each one of the officers encountered the very real possibility of dying that day, and they all thought of others during what could have been their final moments. The officers came to terms with having survived by maintaining a belief in the value of being in service of others, and that their survival would mean the fostering of aid for others in the future

The function of the social service department in the Blank State Hospital, in the release and supervision of patients during the statistical year 1940-1941

Thesis (M.S.)--Boston University, 1942. This item was digitized by the Internet Archive

Impact of the annealing temperature on Pt/g-C3N4 structure, activity and selectivity between photodegradation and water splitting

Acknowledgements: The authors would like to thank SABIC as well as EPSRC platform grant [EP/K015540/1] for financial support and the Royal Society of Chemistry for a Wolfson Merit Award. In order to protect intellectual property the data underpinning this publication are not made publicly available. All enquiries about the data should be addressed to [email protected] reviewedPostprin

Isolating Triggered Star Formation

Galaxy pairs provide a potentially powerful means of studying triggered star formation from galaxy interactions. We use a large cosmological N-body simulation coupled with a well-tested semi-analytic substructure model to demonstrate that the majority of galaxies in close pairs reside within cluster or group-size halos and therefore represent a biased population, poorly suited for direct comparison to ``field'' galaxies. Thus, the frequent observation that some types of galaxies in pairs have redder colors than ``field'' galaxies is primarily a selection effect. We select galaxy pairs that are isolated in their dark matter halos with respect to other massive subhalos (N=2 halos) and a control sample of isolated galaxies (N=1 halos) for comparison. We then apply these selection criteria to a volume-limited subset of the 2dF Galaxy Redshift Survey with M_Bj <= -19 and obtain the first clean measure of the typical fraction of galaxies affected by triggered star formation and the average elevation in the star formation rate. We find that 24% (30.5%) of these L^\star and sub-L^{\star} galaxies in isolated 50 (30) kpc/h pairs exhibit star formation that is boosted by a factor of >~ 5 above their average past value, while only 10% of isolated galaxies in the control sample show this level of enhancement. Thus, 14% (20 %) of the galaxies in these close pairs show clear triggered star formation. The isolation criteria we develop provide a means to constrain star formation and feedback prescriptions in hydrodynamic simulations and a very general method of understanding the importance of triggered star formation in a cosmological context. (Abridged.)Comment: 12 pages, 10 figures, emulateapj format, accepted by Ap

A robustness approach to theory building: A case study of language evolution

Models of cognitive processes often include simplifications, idealisations, and fictionalisations, so how should we learn about cognitive processes from such models? Particularly in cognitive science, when many features of the target system are unknown, it is not always clear which simplifications, idealisations, and so on, are appropriate for a research question, and which are highly misleading. Here we use a case-study from studies of language evolution, and ideas from philosophy of science, to illustrate a robustness approach to learning from models. Robust properties are those that arise across a range of models, simulations and experiments, and can be used to identify key causal structures in the models, and the phenomenon, under investigation. For example, in studies of language evolution, the emergence of compositional structure is a robust property across models, simulations and experiments of cultural transmission, but only under pressures for learnability and expressivity. This arguably illustrates the principles underlying real cases of language evolution. We provide an outline of the robustness approach, including its limitations, and suggest that this methodology can be productively used throughout cognitive science. Perhaps of most importance, it suggests that different modelling frameworks should be used as tools to identify the abstract properties of a system, rather than being definitive expressions of theories

Multi-level study of C3H2: The first interstellar hydrocarbon ring

Cyclic species in the interstellar medium have been searched for almost since the first detection of interstellar polyatomic molecules. Eleven different C3H2 rotational transitions were detected; 9 of which were studied in TMC-1, a nearby dark dust cloud, are shown. The 1 sub 10 yields 1 sub 01 and 2 sub 20 yields 2 sub 11 transitions were observed with the 43 m NRAO telescope, while the remaining transitions were detected with the 14 m antenna of the Five College Radio Observatory (FCRAO). The lines detected in TMC-1 have energies above the ground state ranging from 0.9 to 17.1 K and consist of both ortho and para species. Limited maps were made along the ridge for several of the transitions. The HC3N J = 2 yields 1 transition were mapped simultaneously with the C3H2 1 sub 10 yields 1 sub 01 line and therefore can compare the distribution of this ring with a carbon chain in TMC-1. C3H2 is distributed along a narrow ridge with a SE - NW extension which is slightly more extended than the HC2N J = 2 yields 1. Gaussian fits gives a FWHP extension of 8'5 for C3H2 while HC3N has a FWHP of 7'. The data show variations of the two velocity components along the ridge as a function of transition. Most of the transitions show a peak at the position of strongest HC3N emission while the 2 sub 21 yields 2 sub 10 transition shows a peak at the NH3 position

Spatial Grazing Land Management Land Types of Queensland: Review and amendments

The Grazing Land Management (GLM) land type spatial layer is the spatial representation of Land types of Queensland as described by the Queensland Department of Agriculture, Fisheries (DAF) (https://futurebeef.com.au/knowledge-centre/land-types-of-queensland/). The spatial land type layer is a key input for property mapping and modelling of pasture growth across Queensland by the DAF and the Department of Environment and Science (DES). The spatial layer was first constructed by the ex-Queensland Department of Environment and Resource Management (DERM) as a part of the former Delbessie Agreement (State Rural Leasehold Land Strategy (SRLLS)). Whilst the SRLLS program concluded in 2014, the project legacy has been managed by the Queensland Department of Natural Resources, Mines and Energy (DNRME). This technical report relates a collaborative multiple departmental approach between (DAF, DES and DNRME) to create the best land type spatial layer for government and public use. This report provides the method, process and outcomes applied to the land type spatial layer as a working account (including Version log) for open reference

Highly active iridium(I) complexes for the selective hydrogenation of carbon-carbon multiple bonds

New iridium(I) complexes, bearing a bulky NHC/phosphine ligand combination, have been established as extremely efficient hydrogenation catalysts that can be used at low catalyst loadings, and are compatible with functional groups which are often sensitive to more routinely employed hydrogenation methods

Mediatization of Emotion on Social Media: Forms and Norms in Digital Mourning Practices

This article provides the theoretical background for this Special Issue which explores the mediatization of emotion on social media as attested in different digital mourning practices. The overview discusses the affective and emotional turn alongside the mediatic turn in relation to key trends and foci in the study of affect/emotion. Our discussion points to a shift in conceptualizations of affect/emotion from mediated to mediatized practice, embedded in other social practices and subject to media and social media logics, affordances, and frames, which are worthy of empirical investigation. The article also presents key insights offered in the four articles of this Special Issue and foregrounds current and future directions in the study of mediatization, emotional sharing, and digital mourning practices