cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Field Induced Quantum Phase Transitions in $S=1/2$ $J_1$-$J_2$ Heisenberg Model on the Square Lattice
Creators: name: Morita, Katsuhiro
name: Shibata, Naokazu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the magnetic field dependence of the ground state of $S=1/2$ $J_1$-$J_2$ Heisenberg model on the square lattice by the DMRG method with the sine-square deformation. We obtain 8 different phases including plaquette valence-bond crystal with a finite spin gap, transverse N$\acute{\rm e}$el, transverse stripe, 1/2 magnetization plateau with up-up-up-down (uuud), and three new phases we named Y-like, V-like, and $Ψ$ phases around $J_2/J_1$ =0.55-0.6 depending on the magnetic field. The phase transitions to uuud and Y-like states from transverse N$\acute{\rm e}$el (at $J_2/J_1$ = 0.55) and stripe (at $J_2/J_1$ = 0.6) states are discontinuous, as in the case of spin-flop.
Modelling overdispersed Poisson data
Creators: name: Sims, Julie Ann.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Rescuing Solidarity from Its Carers. A Response to Professor ter Meulen
Creators: name: De Grandis, Giovanni
Publisher: name: Diametros
Year: 2015

description: The paper points out three serious problems in Ruud ter Meulen’s view of solidarity and of its role in healthcare ethics. First, it is not clear whether and to what extent ter Meulen expects normative concepts to be rooted in existing social practices: his criticism of liberal theories of justice seems to imply a different view on this issue than his implicit assumption that normative concepts are independent from social and historical trends. Second, it is not clear at which level his notion of solidarity is meant to be applied: does it provide principles for individuals or for institutions? Nor is it clear at what level of generality it should work: is it meant for healthcare institutions or for states, for citizens or for healthcare practitioners? Third, it is not at all clear how the communitarian and the universalist aspirations in his conception of solidarity can be reconciled. In light of such difficulties it is argued that within philosophical discourse solidarity can be a useful notion only if it can be clearly distinguished from existing and commonly used ethical concepts. Three examples of such narrow and specific uses of solidarity are presented. Finally, a sceptical view of confining the work of applied philosophers to articulating normative concepts is put forward and an alternative view of blending empirical and philosophical analysis is proposed. This vision of field philosophy requires serious attention and careful understanding of the circumstances and constraints within which normative recommendations operate. It is suggested that such a modest and empirically grounded understanding of normative work is a better way of honouring the belief that philosophy is rooted in social institutions and in complex webs of relations.
description: Diametros, No 43 (2015)
Twist-3 T-odd fragmentation functions $G^\perp$ and $\tilde{G}^\perp$ in a spectator model
Creators: name: Yang, Yongliang
name: Lu, Zhun
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a calculation of the twist-3 T-odd chiral-even fragmentation functions $G^{\perp}$ and $\tilde{G}^{\perp}$ using a spectator model. We consider the effect gluon exchange to calculate all necessary one-loop diagrams for the quark-quark and quark-gluon-quark correlation functions. We find that the gluon loops corrections generate non-zero contribution to these two fragmentation function. We numerically calculate their half-$k_T$ moments by integrating over the transverse momentum and also verify the equation of motion relation among $G^{\perp}$, $\tilde{G}^{\perp}$ and the Collins function.
description: 8 pages, 3 figures, match the version published in PLB
Geometry of the neutrino mixing space
Creators: name: Flieger, Wojciech
name: Gluza, Janusz
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a geometric structure of a physical region of neutrino mixing matrices as part of the unit ball of the spectral norm. Each matrix from the geometric region is a convex combination of unitary PMNS matrices. The disjoint subsets corresponding to a different minimal number of additional neutrinos are described as relative interiors of faces of the unit ball. We determined the Carathéodory's number showing that, at most, four unitary matrices of dimension three are necessary to represent any matrix from the neutrino geometric region. For matrices which correspond to scenarios with one and two additional neutrino states, the Carathéodory's number is two and three, respectively. Further, we discuss the volume associated with different mathematical structures, particularly with unitary and orthogonal groups, and the unit ball of the spectral norm. We compare the obtained volumes to the volume of the region of physically admissible mixing matrices for both the CP-conserving and CP-violating cases in the present scenario with three neutrino families and scenarios with the neutrino mixing matrix of dimension higher than three.
Natural and human impacts on surface water quality in the Tooma River catchment, New South Wales
Creators: name: Kress, Jessica.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Inflating Kahler Moduli and Primordial Magnetic Fields
Creators: name: Aparicio, Luis
name: Maharana, Anshuman
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the production of primordial magnetic fields in inflationary models in type IIB string theory where the role of the inflaton is played by a Kahler modulus. We consider various possibilities to realise the Standard Model degrees of freedom in this setting and explicitly determine the time dependence of the inflaton coupling to the Maxwell term in the models. Using this we determine the strength and scale dependence of the magnetic fields generated during inflation. The usual "strong coupling problem" for primordial magnetogesis manifests itself by cycle sizes approaching the string scale, this appears in a certain class of fibre inflation models where the standard model is realised by wrapping D7-branes on cycles in the geometric regime.
description: 18 pages, 4 figures
Significance of new-snow properties for snow cover development
Creators: name: Costijn Zwart
Publisher: name: Zenodo
Year: 2007
Subjects: Snow
Avalanche
Meteorology

description: Thorough knowledge regarding the properties of new snow is crucial in avalanche forecasting. The input of reliable boundary conditions (e.g. density of new snow) are essential for accurate snow-cover modelling. However, the grain and bulk properties of deposited new snow have never been systematically investigated. In this contribution we present data used for verification of the snow-cover model SNOWPACK. The model, developed at the Swiss Federal Institute for Snow and Avalanche Research. (SLF), simulates the evolution of the snow cover based on meteorological input data. Its strength lies in the accurate description of crucial layers and interfaces such as surface hoar, depth hoar and melt-freeze crusts based on snow microstructure physics. The data for verification were obtained during the winter season 2005/2006 on the SLF study plot located at Weissfluhjoch, 2540 m a.s.l. near Davos, Switzerland. During snowfall events, new snow densities were measured on a half hourly to hourly basis, depending on the intensity of the snowfall. The snow crystals were characterised using various techniques such as macro photography and image process- ing. Specially designed sensors were placed before and during snow storms to measure the settling and temperature of different new snow layers in the snow cover. The first few days after snow storms, detailed snow profiles were taken. The fresh snow layers were then characterised with the help of high-resolution resistance measurements (SnowMicropen), snow grain characterisation, stability tests and density profiles. Based on these measurements we derived a new parametrisation for new snow density and show how this may improve snow-cover simulations. The new parametrisation improves the total snow water equivalent predictions for different seasons as well as the modelled snow-cover layering. With the corrected initial conditions, the settling of 60 cm of new snow in March 2006 was reasonably well modelled. Nevertheless, a better understanding of new snow viscosity is needed to further improve the modelled settling curves and possible causes of errors are qualitatively analysed.
The Failure of the Wellstone-Murray Family Violence Option to Provide Meaningful Assistance to Survivors of Domestic Violence
Creators: name: Kogan, Jane
Publisher: name: Columbia Social Work Review
Year: 2019

description: This paper addresses the failure of the Wellstone-Murray Family Violence Option (FVO), an amendment to the 1996 Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA), to provide meaningful assistance to survivors of domestic violence. The FVO allows states to waive federal public assistance requirements, such as work requirements and child support collection, for applicants who are survivors of domestic violence. The FVO, however, is inadequately implemented in New York City and across the country. Several suggestions are given to make the FVO more effective.
description: Columbia Social Work Review, Vol 4 No 1 (2006)
In a search for a shape maximizing packing fraction for two-dimensional random sequential adsorption
Creators: name: Cieśla, Michał
name: Pająk, Grzegorz
name: Ziff, Robert M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Random sequential adsorption (RSA) of various two dimensional objects is studied in order to find a shape which maximizes the saturated packing fraction. This investigation was begun in our previous paper [Cieśla et al., Phys. Chem. Chem. Phys. 17, 24376 (2015)], where the densest packing was studied for smoothed dimers. Here this shape is compared with a smoothed $n$-mers, spherocylinders and ellipses. It is found that the highest packing fraction out of the studied shapes is $0.58405 \pm 0.0001$ and is obtained for ellipses having long-to-short axis ratio of $1.85$, which is also the largest anisotropy among the investigated shapes.
description: 14 pages, 7 fiures
Just Solidarity: The Key to Fair Health Care Rationing
Creators: name: Fleck, Leonard M.
Publisher: name: Diametros
Year: 2015

description: I agree with Professor ter Meulen that there is no need to make a forced choice between “justice” and “solidarity” when it comes to determining what should count as fair access to needed health care. But he also asserts that solidarity is more fundamental than justice. That claim needs critical assessment. Ter Meulen recognizes that the concept of solidarity has been criticized for being excessively vague. He addresses this criticism by introducing the more precise notion of “humanitarian solidarity.” However, I argue that these notions are still not precise enough and are in need of behavioral translation, especially in relation to the problem of fair health care rationing. More specifically, I argue that translation ought to take the form of a well-ordered process of rational democratic deliberation, which I describe and defend in this essay. Such a process is what is required to construct a working model of just solidarity as opposed to a merely abstract idealization of just solidarity.
description: Diametros, No 43 (2015)
Interactions within the tritrophic system Solanum spp., Phthorimaea operculella (Zeller) (Lepidoptera : Gelechiidae) and Copidosoma koehleri (Blanchard) (Hymenoptera : Encyrtidae)
Creators: name: Fernando, Chulani.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Determination of hyperfine splittings and Landé $g_J$ factors of $5s~^2S_{1/2}$ and $5p~^2P_{1/2,3/2}$ states of $^{111,113}$Cd$^+$ for a microwave frequency standard
Creators: name: Han, J. Z.
name: Si, R.
name: Qin, H. R.
name: Xin, N. C.
name: Chen, Y. T.
name: Miao, S. N.
name: Chen, C. Y.
name: Zhang, J. W.
name: Wang, L. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Regarding trapped-ion microwave-frequency standards, we report on the determination of hyperfine splittings and Landé $g_J$ factors of $^{111,113}$Cd$^+$. The hyperfine splittings of the $5p~^2P_{3/2}$ state of $^{111,113}$Cd$^+$ ions were measured using laser-induced fluorescence spectroscopy. The Cd$^+$ ions were confined in a linear Paul trap and sympathetically cooled by Ca$^+$ ions. Furthermore, the hyperfine splittings and Landé $g_J$ factors of the $5s~^2S_{1/2}$ and $5p~^2P_{1/2,3/2}$ levels of $^{111,113}$Cd$^+$ were calculated with greater accuracy using the multiconfiguration Dirac--Hartree--Fock scheme. The measured hyperfine splittings and the Dirac--Hartree--Fock calculation values were cross-checked, thereby further guaranteeing the reliability of our results. The results provided in this work can improve the signal-to-noise ratio of the clock transition and the accuracy of the second-order Zeeman shift correction, and subsequently the stability and accuracy of the microwave frequency standard based on trapped Cd$^+$ ions.
Defining International Social Work for the Purpose of Strengthening Curricula in Social Work Graduate Schools
Creators: name: Van Gunst, Sara
Publisher: name: Columbia Social Work Review
Year: 2019

description: This paper examines some of the challenges the social work profession faces in expanding the field at the international level. Defining what we mean by international social work is a fundamental issue to provide greater recognition for the field in order to recruit new students and expand the presence of social workers in international organizations. One of the main avenues for pursuing these goals is to strengthen the international social work curricula at universities. The paper looks to social work values in defining the field’s strengths in international work and uses this as a base to provide suggestions for deepening international social work curricula.
description: Columbia Social Work Review, Vol 4 No 1 (2006)
The appearance of non-spherical systems. Application to LMXB
Creators: name: Rozanska, A.
name: Beldycki, B.
name: Madej, J.
name: Adhikari, T. P.
name: You, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the appearance of the neutron star - accretion disk system as seen by a distant observer in the UV/X-ray domain. The observed intensity spectra are computed assuming non-spherical geometry of the whole system, in which outgoing spectrum is not represented by the flux spectrum, the latter being valid for spherically symmetric objects. Intensity spectra of our model display double bumps in UV/X-ray energy domains. Such structure is caused by the fact that the the source is not spherically symmetric, and the proper integration of intensity over emitted area is needed to reproduce observed spectral shape. Relative normalization of double bump is self consistently computed by our model. X-ray spectra of such a type were often observed in LMXB with accretion disk, ultra luminous X-ray sources, and accreting black hole systems with hot inner compact corona. Our model naturally explains high energy broadening of the disk spectrum observed in some binaries. We attempted to fit our model to X-ray data of XTE~J1709-267 from {\it XMM-Newton}. Unfortunately, the double intensity bump predicted by our model for LMXB is located in soft X-ray domain, uncovered by existing data for this source.
description: 10 pages, 4 figures, submitted to Acta Astronomica, comments are wellcome
The Sibling Relationship in Foster Care
Creators: name: Sheehan, Kate
Publisher: name: Columbia Social Work Review
Year: 2019

description: The majority of children placed into foster care are separated from their siblings upon entering the child welfare system. Some research suggests that siblings enjoy more stable home environments and fewer behavioral problems when placed together in care. The sibling relationship may provide stability, consistency, and unconditional positive regard to the children most at risk for poor outcomes such as anxiety, depression, low self-esteem, and loss of identity. This paper argues that foster care and child welfare agencies must institute the changes necessary to make sibling relationships a priority. Recommendations for integrating the protection of sibling relationships in the placement process are proposed.
description: Columbia Social Work Review, Vol 4 No 1 (2006)
Anger and Military Veterans
Creators: name: Miller, Scott
Publisher: name: Columbia Social Work Review
Year: 2019

description: Anger problems are most evident in veterans who are diagnosed with Posttraumatic Stress Disorder (PTSD) and have been exposed to combat. Because of the institutionalized role anger plays in military training, identity, and culture, anger problems are also an issue for former soldiers who have neither PTSD nor combat experience. Consequently, anger problems are an issue for many veterans whose inability to manage and express their anger constructively inhibits psychosocial functioning in multiple areas, including personal relationships, employment, self-esteem, and behavioral self-control. Empirically supported group interventions addressing this issue adhere to the principles of evidence-based practice and are particularly important given the current geopolitical climate. This paper reviews some of the current literature on clinical interventions for veterans experiencing anger problems and acknowledges the increasingly important role social workers are playing as mental health service providers to veterans with anger problems at institutions such as the Department of Veterans Affairs.
description: Columbia Social Work Review, Vol 4 No 1 (2006)
Solidarity: A Local, Partial and Reflective Emotion
Creators: name: Heyd, David
Publisher: name: Diametros
Year: 2015

description: Solidarity is analysed in contradistinction from two adjacent concepts - justice and sympathy. It is argued that unlike the other two, it is essentially local (rather than universal), partial (rather than impartial) and reflective (an emotion mediated by belief and ideology, interest and common cause). Although not to be confused with justice, solidarity is presented as underlying any contract-based system of justice, since it defines the contours of the group within which the contract is taking place. Finally, due to the fact that health is a typically universal value and being a primary good it is something which should be distributed justly, solidarity seems not to have any central role in bioethics.
description: Diametros, No 43 (2015)
Application of fish swimming physiology to the design of fishways : studies on native and introduced species of the Murray River
Creators: name: Kolotelo, Peter A.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Inversion of the radiative transfer equation for polarized light
Creators: name: Iniesta, Jose Carlos del Toro
name: Cobo, Basilio Ruiz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Since the early 1970s, inversion techniques have become the most useful tool for inferring the magnetic, dynamic, and thermodynamic properties of the solar atmosphere. The intrinsic model dependence makes it necessary to formulate specific means that include the physics in a properly quantitative way. The core of this physics lies in the radiative transfer equation (RTE), where the properties of the atmosphere are assumed to be known while the unknowns are the four Stokes profiles. The solution of the (differential) RTE is known as the direct or forward problem. From an observational point of view, the problem is rather the opposite: the data are made up of the observed Stokes profiles and the unknowns are the solar physical quantities. Inverting the RTE is therefore mandatory. Indeed, the formal solution of this equation can be considered an integral equation. The solution of such an integral equation is called the inverse problem. Inversion techniques are automated codes aimed at solving the inverse problem. The foundations of inversion techniques are critically revisited with an emphasis on making explicit the many assumptions underlying each of them. An incremental complexity procedure is advised for the implementation in practice. Coarse details of the profiles or coarsely sam- pled profiles should be reproduced first with simple model atmospheres (with, for example, a few physical quantities that are constant with optical depth). If the Stokes profiles are well sampled and differences between synthetic and observed ones are greater than the noise, then the inversion should proceed by using more complex models (that is, models where physical quantities vary with depth or, eventually, with more than one component). Significant im- provements are expected as well from the use of new inversion techniques that take the spatial degradation by the instruments into account.
description: Invited review accepted for publication in Living Reviews in Solar Physics. 84 pages, 30 figures
A Giant Arc on the Sky
Creators: name: Lopez, Alexia M.
name: Clowes, Roger G.
name: Williger, Gerard M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the serendipitous discovery of a `Giant Arc on the Sky' at $z \sim 0.8$. The Giant Arc (GA) spans $\sim 1$ Gpc (proper size, present epoch), and appears to be almost symmetrical on the sky. It was discovered via intervening MgII absorbers in the spectra of background quasars, using the catalogues of Zhu \& Ménard. The use of MgII absorbers represents a new approach to the investigation of large-scale structures (LSSs) at redshifts $0.45 \lesssim z \lesssim 2.25$. We present the observational properties of the GA, and we assess it statistically using methods based on: (i) single-linkage hierarchical clustering ($\sim 4.5σ$); (ii) the Cuzick-Edwards test ($\sim 3.0σ$); and (iii) power spectrum analysis ($\sim 4.8σ$). Each of these methods has distinctive attributes and powers, and we advise considering the evidence from the ensemble. We discuss our approaches to mitigating any {\it post-hoc} aspects of analysing significance after discovery. The overdensity of the GA is $δρ/ ρ\sim 1.3 \pm 0.3$. The GA is the newest and one of the largest of a steadily accumulating set of very large LSSs that may (cautiously) challenge the Cosmological Principle, upon which the `standard model' of cosmology is founded. Conceivably, the GA is the precursor of a structure like the Sloan Great Wall (but the GA is about twice the size), seen when the Universe was about half its present age.
description: Accepted for MNRAS
Accessible and inclusive collections: enhancing the reach of library and archive collections through remote technologies
Creators: name: Kamposiori, Christina
Publisher: name: Zenodo
Year: 2023
Subjects: Parallel Session 8 – Unlocking Collections: expanding research library frontiers
Virtual Reading Rooms
Virtual Teaching Spaces
remote access

description: Abstract The closure of libraries and archives during the height of the Covid-19 pandemic restricted access to research and learning materials. Successive periods of national lockdown, and on-going social distancing rules, have significantly disrupted the ability of scholars to conduct research and have affected the student learning experience. In response to these challenges, research libraries and archives have been experimenting with the provision of geographically remote access to heritage and cultural collections through the creation of Virtual Reading Rooms (VRRs) and Virtual Teaching Spaces (VTSs). Research Libraries UK (RLUK), in collaboration with its partners, has been tracking the development of these services since 2020 and investigating their potential as digital research infrastructure. It has conducted three international studies exploring the institutional perspectives with regards to their creation and delivery as well as the academic perception and use of the services. This paper will bring together the results of the two most recent international surveys (Kamposiori, 2022a; Kamposiori, 2022b) exploring their development and use. The first survey documented the most recent innovations in the development and delivery of VRRs and VTSs across the international research library and archives community. The second survey explored the academic, research, and student awareness of and experience with VRRs and VTSs. Findings showed that remote technologies have strong potential to transform collections and make them more accessible and inclusive, as well as facilitate collaboration. Thus, research libraries and archives which have either developed VRRs and VTSs or planning to develop these services are currently considering how remote technologies can be best utilised in the post-pandemic era to engage successfully with a variety of user communities locally and internationally, such as during virtual or hybrid/ blended sessions. Presenting the user perspective alongside the survey results on current practices in the development of VRRs and VTSs will aim to generate discussion around service improvement and sustainability through the creation of audience focused strategies. The goal of the paper will be to demonstrate how the reach of library and archive collections can be enhanced through the use of remote technologies and provide recommendations for the development of VRRs and VTSs based on user experience. Finally, it will touch upon the theme of partnerships and connections by highlighting the potential of these technologies to foster cross-institutional collaboration for the benefit of users.
Mental health disparities in foster care alumni
Creators: name: Bracker, Thomas
Publisher: name: Oregon Health and Science University
Year: 0
Subjects: Psychology, Child

description: There is a high prevalence of mental health disorders in foster care alumni. BIPOC children and families are more adversely affected, with children of African American families being placed in foster care at a higher rate than children of other races. Most children in foster care come from low-income families, poor neighborhoods, and are minorities.
Adoptive Homes and the Meaning of Family
Creators: name: Zink, Alicia Erickson
Publisher: name: Columbia Social Work Review
Year: 2019

description: Restrictions on the adoption rights of gay men and lesbians limit their possibilites to become parents, even as thousands of children wait to be placed in adoptive families in the United States. This article will review past and current policy on gay and lesbian couple adoption in the United States. Policy changes are then suggested to expand the definition of adoptive families and to create non-discriminatory adoption guidelines to protect gay men and lesbians as legitimate families. Finally, the role of social workers and their responsibility under both the laws and systems of adoption protocol will be explored.
description: Columbia Social Work Review, Vol 3 No 1 (2005)
The population of long-period transiting exoplanets
Creators: name: Foreman-Mackey, Daniel
name: Morton, Timothy D.
name: Hogg, David W.
name: Agol, Eric
name: Schölkopf, Bernhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Kepler Mission has discovered thousands of exoplanets and revolutionized our understanding of their population. This large, homogeneous catalog of discoveries has enabled rigorous studies of the occurrence rate of exoplanets and planetary systems as a function of their physical properties. However, transit surveys like Kepler are most sensitive to planets with orbital periods much shorter than the orbital periods of Jupiter and Saturn, the most massive planets in our Solar System. To address this deficiency, we perform a fully automated search for long-period exoplanets with only one or two transits in the archival Kepler light curves. When applied to the $\sim 40,000$ brightest Sun-like target stars, this search produces 16 long-period exoplanet candidates. Of these candidates, 6 are novel discoveries and 5 are in systems with inner short-period transiting planets. Since our method involves no human intervention, we empirically characterize the detection efficiency of our search. Based on these results, we measure the average occurrence rate of exoplanets smaller than Jupiter with orbital periods in the range 2-25 years to be $2.0\pm0.7$ planets per Sun-like star.
description: Accepted for publication in AJ
Is the Healthy Marriage Initiative Really Healthy for Families?
Creators: name: Yardley, Meg
Publisher: name: Columbia Social Work Review
Year: 2019

description: The Healthy Marriage Initiative is a government proposal to expand programs promoting marriage, particularly among low-income families and welfare recipients. In this paper, I examine the implications of this proposal as it applies to child poverty. I argue that contrary to the claims of its proponents, the Healthy Marriage Initiative would not substantially reduce child poverty rates, would increase as many unhealthy as healthy marriages, and would intrude inappropriately into the lives of poor men and women.
description: Columbia Social Work Review, Vol 3 No 1 (2005)
Target-enclosing inversion using an interferometric objective function
Creators: name: Zheglova, Polina
name: Ravasi, Matteo
name: Vasconcelos, Ivan
name: Malcolm, Alison
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Full waveform inversion is a high-resolution subsurface imaging technique, in which full seismic waveforms are used to infer subsurface physical properties. We present a novel, target-enclosing, full-waveform inversion framework based on an interferometric objective function. This objective function exploits the equivalence between the convolution and correlation representation formulas, using data from a closed boundary around the target area of interest. Because such equivalence is violated when the knowledge of the enclosed medium is incorrect, we propose to minimize the mismatch between the wavefields independently reconstructed by the two representation formulas. The proposed method requires only kinematic knowledge of the subsurface model, specifically the overburden for redatuming, and does not require prior knowledge of the model below the target area. In this sense it is truly local: sensitive only to the medium parameters within the chosen target, with no assumptions about the medium or scattering regime outside the target. We present the theoretical framework and derive the gradient of the new objective function via the adjoint-state method and apply it to a synthetic example with exactly redatumed wavefields. A comparison with FWI of surface data and target-oriented FWI based on the convolution representation theorem only shows the superiority of our method both in terms of the quality of target recovery and reduction in computational cost.
"War Is Not the Only Trauma"
Creators: name: Akesson, Bree
Publisher: name: Columbia Social Work Review
Year: 2019

description: War inevitably leads to a degree of psychological trauma among affected populations. This paper critiques Western-based, clinical interventions as detrimental to an already demoralized population. Ager’s (2002) framework of psychosocial intervention – human capacity, social ecology, and culture and values – is appropriate in the context of complex emergencies. Building upon an ecosystems perspective, Ager’s framework considers the whole individual and promotes strengths and resiliencies. Social workers are ideal facilitators of this type of community-based, culturally-salient, psychosocial programming, due to its application of the field’s core principles and its commitment to empowering community members to participate in their own recovery.
description: Columbia Social Work Review, Vol 3 No 1 (2005)
Aspherical Photon and Anti-Photon Surfaces
Creators: name: Gibbons, G. W.
name: Warnick, C. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this note we identify photon surfaces and anti-photon surfaces in some physically interesting spacetimes, which are not spherically symmetric. All of our examples solve physically reasonable field equations, including for some cases the vacuum Einstein equations, albeit they are not asymptotically flat. Our examples include the vacuum C-metric, the Melvin solution of Einstein-Maxwell theory and generalisations including dilaton fields. The (anti-)photon surfaces are not round spheres, and the lapse function is not always constant.
description: V2 Melvin section extended
An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment
Creators: name: The CHIME Collaboration
name: Amiri, Mandana
name: Bandura, Kevin
name: Boskovic, Anja
name: Chen, Tianyue
name: Cliche, Jean-François
name: Deng, Meiling
name: Denman, Nolan
name: Dobbs, Matt
name: Fandino, Mateus
name: Foreman, Simon
name: Halpern, Mark
name: Hanna, David
name: Hill, Alex S.
name: Hinshaw, Gary
name: Höfer, Carolin
name: Kania, Joseph
name: Klages, Peter
name: Landecker, T. L.
name: MacEachern, Joshua
name: Masui, Kiyoshi
name: Mena-Parra, Juan
name: Milutinovic, Nikola
name: Mirhosseini, Arash
name: Newburgh, Laura
name: Nitsche, Rick
name: Ordog, Anna
name: Pen, Ue-Li
name: Pinsonneault-Marotte, Tristan
name: Polzin, Ava
name: Reda, Alex
name: Renard, Andre
name: Shaw, J. Richard
name: Siegel, Seth R.
name: Singh, Saurabh
name: Smegal, Rick
name: Tretyakov, Ian
name: Van Gassen, Kwinten
name: Vanderlinde, Keith
name: Wang, Haochen
name: Wiebe, Donald V.
name: Willis, James S.
name: Wulf, Dallas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a drift scan radio telescope operating across the 400-800 MHz band. CHIME is located at the Dominion Radio Astrophysical Observatory near Penticton, BC Canada. The instrument is designed to map neutral hydrogen over the redshift range 0.8 to 2.5 to constrain the expansion history of the Universe. This goal drives the design features of the instrument. CHIME consists of four parallel cylindrical reflectors, oriented north-south, each 100 m $\times$ 20 m and outfitted with a 256 element dual-polarization linear feed array. CHIME observes a two degree wide stripe covering the entire meridian at any given moment, observing 3/4 of the sky every day due to Earth rotation. An FX correlator utilizes FPGAs and GPUs to digitize and correlate the signals, with different correlation products generated for cosmological, fast radio burst, pulsar, VLBI, and 21 cm absorber backends. For the cosmology backend, the $N_\mathrm{feed}^2$ correlation matrix is formed for 1024 frequency channels across the band every 31 ms. A data receiver system applies calibration and flagging and, for our primary cosmological data product, stacks redundant baselines and integrates for 10 s. We present an overview of the instrument, its performance metrics based on the first three years of science data, and we describe the current progress in characterizing CHIME's primary beam response. We also present maps of the sky derived from CHIME data; we are using versions of these maps for a cosmological stacking analysis as well as for investigation of Galactic foregrounds.
description: 40 pages, 31 figures, 2 tables. Accepted by ApJS
Birds, mammals and their habitat in a variegated landscape in the western Strzelecki Ranges : comparing native forest, eucalypt plantation, pine plantation and cleared farmland
Creators: name: Rossi, Sharon.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A Deconstruction Critique of the Female Intervention Team
Creators: name: Nabha, Anita
Publisher: name: Columbia Social Work Review
Year: 2019

description: Over the past decade, there has been a significant increase in female juvenile offenders resulting in a growing interest in how to best address delinquent girls. In response to the changing demographics of juvenile offenders, the Office of Juvenile Justice and Delinquency Prevention (OJJDP), a part of the Department of Justice, has called for “gender-specific” services. In this paper I will take one particular gender-specific intervention lauded by the OJJDP as a best practice in the field, the Female Intervention Team (FIT), and deconstruct the theories and beliefs that ground the intervention. This paper argues that FIT is problematic for three main reasons: first, FIT essentializes being female; second, FIT constructs girls as victims; and finally, FIT places too much emphasis on the individual girl’s agency at the cost of ignoring how structural forces contribute to and affect her reality.
description: Columbia Social Work Review, Vol 3 No 1 (2005)
Collective magnetic splitting in single-photon superradiance
Creators: name: Kong, Xiangjin
name: Pálffy, Adriana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In an ensemble of identical atoms, cooperative effects like sub- or superradiance may alter the decay rates and the energy of specific transitions may be shifted from the single-atom value by the so-called collective Lamb shift. While such effects in ensembles of two-level systems are by now well understood, realistic multi-level systems are more difficult to handle. In this work we show that in a system of atoms or nuclei under the action of an external magnetic field, the collective contribution to the level shifts can amount to seizable deviations from the single-atom Zeeman or magnetic hyperfine splitting picture. We develop a formalism to describe single-photon superradiance in multi-level systems in the small sample limit and quantify the parameter regime for which the collective Lamb shift leads to measurable deviations in the magnetic-field-induced splitting. In particular, we show that this effect should be observable in the nuclear magnetic hyperfine splitting in Mössbauer nuclei embedded in thin-film x-ray cavities.
description: 5 pages, 2 figures, supplemental material available with the files; v2 introduced new references and tempered some statements, results unchanged
Dark Matter from a Classically Scale-Invariant $SU(3)_X$
Creators: name: Karam, Alexandros
name: Tamvakis, Kyriakos
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study a classically scale-invariant extension of the Standard Model in which the dark matter and electroweak scales are generated through the Coleman-Weinberg mechanism. The extra $SU(3)_X$ gauge factor gets completely broken by the vacuum expectation values of two scalar triplets. Out of the eight resulting massive vector bosons the three lightest are stable due to an intrinsic $Z_2\times Z_2'$ discrete symmetry and can constitute dark matter candidates. We analyze the phenomenological viability of the predicted multi-Higgs sector imposing theoretical and experimental constraints. We perform a comprehensive analysis of the dark matter predictions of the model solving numerically the set of coupled Boltzmann equations involving all relevant dark matter processes and explore the direct detection prospects of the dark matter candidates.
description: 39 pp, 5 figures, 3 tables, comments added, minor corrections, updated references, matches version published in PRD
Welfare Reform and Immigrants
Creators: name: Kopij, Alice
Publisher: name: Columbia Social Work Review
Year: 2019

description: The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 profoundly impacted immigrants and suggested a fundamental shift in our national stance toward immigration. This paper examines the impact of welfare reform on legal, non-citizen immigrants in the United States. It describes how welfare reform restructured the laws that determined the eligibility for benefits among immigrants, discusses changes made to these laws, and summarizes the debate over whether these changes were sufficient. It concludes with implications for policy and policy options that exist within the context of the present laws. Ultimately, through welfare reform, the government devalued the role of the immigrant and inverted the ideals of opportunity, equality, and full participation in society that, in theory if not in practice, characterize our national identity.
description: Columbia Social Work Review, Vol 3 No 1 (2005)
Dynamic Growth/Etching Model for the Synthesis of Two-Dimensional Transition Metal Dichalcogenides via Chemical Vapour Deposition
Creators: name: Pollmann, E.
name: Maas, A.
name: Marnold, D.
name: Hucht, A.
name: Neubieser, R.
name: Stief, M.
name: Madauß, L.
name: Schleberger, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The preparation of two-dimensional transition metal dichalcogenides on an industrially relevant scale will rely heavily on bottom-up methods such as chemical vapour deposition. In order to obtain sufficiently large quantities of high-quality material, a knowledge-based optimization strategy for the synthesis process must be developed. A major problem that has not yet been considered is the degradation of materials by etching during synthesis due to the high growth temperatures. To address this problem, we introduce a mathematical model that accounts for both growth and, for the first time, etching to describe the synthesis of two-dimensional transition metal dichalcogenides. We consider several experimental observations that lead to a differential equation based on several terms corresponding to different supply mechanisms, describing the time-dependent change in flake size. By solving this equation and fitting two independently obtained experimental data sets, we find that the flake area is the leading term in our model. We show that the differential equation can be solved analytically when only this term is considered, and that this solution provides a general description of complex growth and shrinkage phenomena. Physically, the dominance suggests that the supply of material via the flake itself contributes most to its net growth. This finding also implies a predominant interplay between insertion and release of atoms and their motion in the form of a highly dynamic process within the flake. In contrast to previous assumptions, we show that the flake edges do not play an important role in the actual size change of the two-dimensional transition metal dichalcogenide flakes during chemical vapour deposition.
description: 22 pages, 3 figures
Reflections of Racial Consciousness in Social Work
Creators: name: Favaro, Jamie
Publisher: name: Columbia Social Work Review
Year: 2019

description: This article focuses on select reflections of a White social work student’s thoughts on racism within a historical, societal, and systems context. Topics discussed include prejudice, privilege, and power differentials within the White as helper, Black in need dichotomy. Research and personal outlook are interwoven to conclude that as agents of change, White social workers hold a unique responsibility in working towards an anti-racist agenda and confronting their own racist ways of knowing.
description: Columbia Social Work Review, Vol 2 No 1 (2004)
Solidarity and Health: A Public Goods Justification
Creators: name: Illingworth, Patricia
name: Parmet, Wendy E.
Publisher: name: Diametros
Year: 2015

description: This comment on Professor ter Meulen's paper, "Solidarity and Justice in Health Care," offers additional perspectives on solidarity's importance for health. Noting the findings of social epidemiology, the paper explains that health has important public good dimensions. It is both non-rivlalrous because one person's health does not diminish another's, and it is largely determined by non-excludable access goods, including social networks, social determinants, and public health efforts. The public good dimension of health underscores the mutual dependence and shared stake that people have with respect to health, and highlights the importance of coming together in solidarity for the sake of health. This is not to say that solidarity cannot also foster exclusionary tendencies; however, the recognition of mutual dependency with respect to health can foster an inclusive solidarity for the health of all people.
description: Diametros, No 43 (2015)
title: skalmos (σκαλμός, ὁ)
Creators: name: Della Rossa, Federico
Publisher: name: Laboratorio di Storia, Archeologia, Epigrafia e Tradizione dell'antico (SAET) - Scuola Normale Superiore
Year: 2023
Subjects: subject: FOS: Humanities
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Analisi della voce skalmos (σκαλμός, ὁ).