cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Amblyomma longirostre
Creators: name: Basu, A. K.
name: Basu, M.
name: Adesiyun, A. A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ixodida
Ixodidae
Amblyomma
Amblyomma longirostre

description: Amblyomma longirostre
 Nuttall et al. (1926) recorded this tick from Trinidad. Aitken et al. (1968a and 1969) recorded A. longirostre during their survey of arthropods for natural virus infection and its immature stages frequently parasitized birds. Everard and Tikasingh (1973) found this tick on rodents (Oryzomys capito and Proechimys guyannensis) from Turure Forest. Smith (1974) recorded A. longirostre in Trinidad from small wild animals. Nava et al. (2007b) also indicated the presence of tick A. longirostre in Trinidad. Voltzit (2007) mentioned that in 1955 T.H.G. Aitken collected 2 males and a female A. longirostre respectively from porcupines (Coendou prehensilis) and birds (Turdus nudigensis) at Sangre Grande, Trinidad.
 Distribution: ranges from Mexico to Argentina (Voltzit 2007; Nava et al. 2010)
description: Published as part of Basu, A. K., Basu, M. & Adesiyun, A. A., 2012, A Review On Ticks (Acari: Ixodoidea: Ixodidae, Argasidae), Associated Pathogens And Diseases Of Trinidad And Tobago, pp. 39-50 in Acarologia 52 (1) on page 44, DOI: 10.1051/acarologia/20122034, http://zenodo.org/record/4667077
Universal Scaling in Mixing Correlated Growth with Randomness
Creators: name: Kolakowska, A.
name: Novotny, M. A.
name: Verma, P. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study two-component growth that mixes random deposition (RD) with a correlated growth process that occurs with probability p. We find that these composite systems are in the universality class of the correlated growth process. For RD blends with either Edwards-Wilkinson of Kardar-Parisi-Zhang processes, we identify a nonuniversal parameter in the universal scaling in p.
description: 4 pages, 6 figures, 11 references; under review
The SUPERWIDE Catalog: A Catalog of 99,203 Wide Binaries Found in Gaia and Supplemented by the SUPERBLINK High Proper Motion Catalog
Creators: name: Hartman, Zachary
name: Lépine, Sébastien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a catalog of 99,203 wide binary systems, initially identified as common proper motion (CPM) pairs from a subset of ~5.2 million stars with proper motions $μ> 40$ mas/year, selected from Gaia data release 2 (DR2) and the SUPERBLINK high proper motion catalog. CPM pairs are found by searching for pairs of stars with angular separations $< 1$ degree and proper motion differences $Δμ< 40$ mas/year. A Bayesian analysis is then applied in two steps. In a first pass, we use proper motion differences and angular separations to distinguish between binaries and chance alignments. In a second pass, we use parallax data from Gaia DR2 to refine our Bayesian probability estimates. We present a table of 119,390 pairs which went through the full analysis, 99,203 of which have probabilities $>95\%$ of being real binaries. Of those 99,203 high probability pairs, we estimate that only about 364 pairs are most likely to be false positives. In addition, we identify 57,506 pairs which have probabilities $>10\%$ from the first pass but have high parallax errors and therefore were not vetted in the second pass. We examine the projected physical separation distribution of our highest probability pairs and note that the distribution is a simple exponential tail and shows no evidence of being bi-modal. Among pairs with lower probability, wide binaries are detected at larger separations ($>10^{4-5}$ AU) consistent with the very wide population suggested in previous studies, however our analysis suggests that these do not represent a distinct population. We examine the HR diagram of this set of high probability wide binaries and find evidence for 980 over-luminous components among 2,227 K+K wide binaries; assuming these represent unresolved sub-systems, we determine that the higher order multiplicity fraction for K+K wide systems is at least 39.6\%.
description: 38 Pages, 34 Figures, Accepted to ApJS, Comments are welcome
Prospects for a multi-stakeholder dialogue on climate engineering
Creators: name: Conca, Kenneth
Publisher: name: American University
Year: 2023

description: Lessons from the literature on multi-stakeholder dialogue (MSD) that are relevant to the debate on climate engineering (CE) are examined. MSDs have been used to prod slow-to-develop intergovernmental regulatory processes on a range of transnational and global controversies. A CEMSD might push forward anticipatory governance of CE by promoting social learning, sharpening and legitimizing governance norms, and starting to arrange the political space for governance by states. However, significant challenges and risks are also identified, including questions about the ripeness of the issue for stakeholder dialogue; difficult trade-offs in the design of dialogues, particularly around issues of participation and knowledge-power; and inherent tensions in the various purposes a CEMSD might serve. Given these challenges, steps forward that would better prepare a space for legitimate and effective dialogue are recommended.
On the Chiral Ring of N=1 Supersymmetric Gauge Theories
Creators: name: Matone, Marco
name: Mazzucato, Luca
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the chiral ring of the pure N=1 supersymmetric gauge theory with SU(N) gauge group and show that the classical relation S^{N^2}=0 is modified to the exact quantum relation (S^N-Λ^{3N})^N=0.
description: 5 pages. Comments and references added
Wall-bounded turbulence control: statistical characterisation of actions/states
Creators: name: Pastor, Roberto
name: Vela-Martin, Alberto
name: Flores, Oscar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The present paper reports the results of a Monte Carlo experiment using a turbulent channel flow. Different actions are proposed, varying the size, duration and sign of a localised volumetric force that acts near one wall of a turbulent channel flow, running at a small Reynolds ($Re_τ=165$) in a small computational domain. The effect of each action is evaluated comparing the evolution of the flow with and without the action, gathering statistics over 1700 repetitions of the experiment for each action. The analysis of the results show that small/short forcings are equally likely to increase or decrease the skin friction drag, independently of the sign of the forcing (i.e., towards or away from the wall). When the size or the duration of the forcing increases, so does the probability of increasing the skin friction. Then, an "a priori" analysis is performed, evaluating the state of the flow just before the action, conditioned to actions that result in a decrease of the skin friction over a period of one eddy turn-over time. The resulting fields of velocity, wall shear stresses and wall pressure are consistent with an opposition control strategy, where the forcing is opposing the vertical motions near the wall. Finally, a preliminary analysis of the performance of actuation triggered by pressure or wall shear stresses sensors is evaluated (i.e., "a posteriori" analysis). Our results show that the actuation triggered by a wall shear sensor seems to be more effective than the actuation triggered by a wall pressure sensor, at least for the preliminary definitions of sensors and thresholds used here.
description: Proceedings of the Fourth Madrid Summer School on Turbulence, to be published in the Journal of Physics: Conference Series
Ixodes luciae Senevet 1940
Creators: name: Basu, A. K.
name: Basu, M.
name: Adesiyun, A. A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Ixodida
Ixodidae
Ixodes
Ixodes luciae

description: Ixodes luciae
 Aitken et al. (1969) recorded I. luciae during their survey of arthropods for natural viral infections. Everard and Tikasingh (1973) found I. luciae on rodents (Oryzomys capito and Proechimys guyannensis) from Turure Forest. In 1974, Smith recorded I. luciae from small wild animals from Trinidad.
 Distribution: Argentina, Brazil, Bolivia, Colombia, Guyana, Guatemala, Peru, Mexico, Nicaragua, Surinam, Venezuela. Belize, Costa Rica, Ecuador, French Guiana and Panama (Guglielmone et al. 2011)
description: Published as part of Basu, A. K., Basu, M. & Adesiyun, A. A., 2012, A Review On Ticks (Acari: Ixodoidea: Ixodidae, Argasidae), Associated Pathogens And Diseases Of Trinidad And Tobago, pp. 39-50 in Acarologia 52 (1) on page 45, DOI: 10.1051/acarologia/20122034, http://zenodo.org/record/4667077
ChaMPlane Optical Survey: Mosaic Photometry
Creators: name: Zhao, Ping
name: Grindlay, Jonathan E.
name: Hong, JaeSub
name: Laycock, Silas
name: Koenig, Xavier P.
name: Schlegel, Eric M.
name: Berg, Maureen van den
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ChaMPlane survey to identify and analyze the serendipitous X-ray sources in deep Galactic plane fields incorporates the ChaMPlane Optical Survey, which is one of NOAO's Long-term Survey Programs. We started this optical imaging survey in March 2000 and completed it in June 2005. Using the NOAO 4-m telescopes with the Mosaic cameras at CTIO and KPNO, deep images of the ChaMPlane fields are obtained in V, R, I and H-alpha bands. This paper describes the process of observation, data reduction and analysis of fields included in the ChaMPlane Optical Survey, and describes the search for H-alpha emission objects and Chandra optical counterparts. We illustrate these procedures using the ChaMPlane field for the black hole X-ray binary GRO J0422+32 as an example.
description: 14 pages, 10 figures, 7 tables, accepted in ApJ Supplement for publication
Prospects for a multi-stakeholder dialogue on climate engineering
Creators: name: Conca, Kenneth
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4101
subject: Climate change impacts and adaptation

description: Lessons from the literature on multi-stakeholder dialogue (MSD) that are relevant to the debate on climate engineering (CE) are examined. MSDs have been used to prod slow-to-develop intergovernmental regulatory processes on a range of transnational and global controversies. A CEMSD might push forward anticipatory governance of CE by promoting social learning, sharpening and legitimizing governance norms, and starting to arrange the political space for governance by states. However, significant challenges and risks are also identified, including questions about the ripeness of the issue for stakeholder dialogue; difficult trade-offs in the design of dialogues, particularly around issues of participation and knowledge-power; and inherent tensions in the various purposes a CEMSD might serve. Given these challenges, steps forward that would better prepare a space for legitimate and effective dialogue are recommended.
UBC food processing facility
Creators: name: Yu, Richmond
name: Liu, Li Nan
name: Sundell, David
name: Saad, Radwa
name: Ho, Peony
Publisher: name: The University of British Columbia
Year: 2014

description: This paper’s objective is to design a food processing facility as well as assess the feasibility of a UBC Farm food processing facility. We conducted a literature review to find example on-campus food processing initiatives and food safety certification requirements, developed a needs assessment through interviews with our stakeholders, and designed a sample building plan. From our findings, we recommended start-up operations focusing on three processes: cheese making, juicing, and freezing. Based on a triple bottom-line analysis, an analysis of a project’s economic, environmental, and social components, we concluded that it would be feasible to begin with the recommended three food processes. Key rationale for our decisions is the availability of local supply. A source for cheese and juice ingredients are abundant in the lower mainland and reduces the emissions and cost of transport is smaller relative to other food processes. To conclude, we recommend a study to determine the interest of other faculties in having a stake a UBC Farm processing facility. Educational opportunities for providing such a facility are vast and open collaboration with other faculties can only help this facility. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Impact of Higgs portal on gravity-mediated production of superheavy dark matter
Creators: name: Chianese, Marco
name: Fu, Bowen
name: King, Stephen F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the so-called Planckian Interacting Dark Matter (PIDM) scenario, superheavy dark matter particles are produced after inflation by gravity-mediated interactions through the freeze-in mechanism. In the minimal PIDM model, the absence of any additional direct coupling with Standard Model particles is assumed. However, for scalar dark matter particles there is no symmetry that suppresses the Higgs portal coupling. In this paper, we therefore study the impact of a non-zero interaction with the Higgs field on the PIDM paradigm for scalar dark matter. In particular, we fully explore the model parameter space in order to identify the allowed regions where the correct dark matter abundance is achieved. Moreover, we provide the threshold value for the Higgs portal coupling below which the corresponding production processes are sub-dominant and the minimal PIDM scenario is preserved. For a benchmark scalar dark matter mass of $10^{15}$ GeV, we find that the Higgs portal coupling has to be smaller than $5.1 \times 10^{-8}$ ($1.1 \times 10^{-7}$) for instantaneous (non-instantaneous) reheating.
description: 14 pages, 5 figures. Updated to match version published in JCAP
title: Epidermoid cyst as an incidental retrorectal mass.
Creators: name: Torregrosa Andres, Asuncion
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Abdominal imaging
subject: Gastrointestinal tract
subject: Pelvis
subject: MR
subject: Clinical Cases

description: Clinical History: A 61-year-old woman with recurrent episodes of hematuria. The patient had no medical history of interest, except for being a smoker.

description: 61 years, female
Dynamical Spin-Blockade in a quantum dot with paramagnetic leads
Creators: name: Cottet, A.
name: Belzig, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate current fluctuations in a three-terminal quantum dot in the sequential tunneling regime. Dynamical spin blockade can be induced when the spin-degeneracy of the dot states is lifted by a magnetic field. This results in super-Poissonian shot noise and positive zero-frequency cross-correlations. Our proposed setup can be realized with semiconductor quantum dots.
description: 7 pages, 3 figures, final version, to appear in Europhys. Lett
title: Neuro-Imaging in congenital CMV infection
Creators: name: Gala, Foram
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Neuroradiology
subject: CNS
subject: CT
subject: MR
subject: Clinical Cases

description: Clinical History: A 2-year-old female child, presented with global developmental delay and microcephaly.

description: 2 years, female
An Upper Bound on the Decay tau -> mu gamma from Belle
Creators: name: Abe, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have performed a search for the lepton-flavor-violating decay tau -> mu gamma using a data sample of 86.3fb^{-1} accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau -> mu gamma) < 3.1 x 10^{-7} at the 90% confidence level.
description: 6 pages, 4 figuresm, submitted to Phys. Rev. Lett
Power to the people : new Student Union Building energy harvesting
Creators: name: Sotola, Sean
name: Hau, Becky
name: Anderson, Catherine
name: Tokuhashi, Naoki
Publisher: name: The University of British Columbia
Year: 2012

description: STATEMENT OF THE PROBLEM: The new Student Union Building for the University of British Columbia is being designed to be one of the most sustainable and energy efficient green buildings in the world. To achieve this, many different types of energy saving systems are being implemented in the new SUB. The goal of this project was to design a multi‐function energy harvesting system that was creative, interactive, and would educate the public about energy harvesting technologies and sustainable building design.[Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”]
Optimization of LANSCE Proton Beam Performance for Isotope Production
Creators: name: Batygin, Yuri K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The LANSCE Isotope Production Facility (IPF) utilizes a 100-MeV proton beam with average power of 23 kW for isotope production in the fields of medicine, nuclear physics, national security, environmental science and industry. Typical tolerable fractional beam loss in the 100-MeV beamline is 4 x10-3. Experimental beam study was made to minimize the beam losses. Adjustments to the ion source extraction voltage resulted in the removal of tails in phase space. Beam based steering in beamlines led to the reduction of beam emittance growth. Readjustment of the 100-MeV quadrupole transport resulted in the elimination of excessive beam envelope oscillations and removed significant parts of the beam halo at the target. Careful beam matching in the drift tube linac (DTL) provided high beam capture (75%) in the DTL. After improvements, beam losses in the 100-MeV beamline were reduced by an order of magnitude and reached the fractional level of 5 x10-4.
How peace education motivates youth peacebuilding: Examples from Pakistan
Creators: name: Cromwell, Alexander
Publisher: name: American University
Year: 2023

description: This article examines the impact of four peace education programs involving Pakistani youth to illuminate peace education’s role in peacebuilding efforts in conflict contexts. It argues that alumni tried to replicate their individual transformations as stimulated by these peace education programs. They did so through community-level projects modelled after the same program processes that had transformed them. Impact on peacebuilding was supported by peace education programs combining different theories of change, focusing on follow-on projects, and providing support structures for alumni. Because alumni modelled their projects after their program experiences, programs should be more transparent in order to maximize impact.
Blue straggler production in globular clusters
Creators: name: Davies, Melvyn B.
name: Piotto, Giampaolo
name: De Angeli, Francesca
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent HST observations of a large sample of globular clusters reveal that every cluster contains between 40 and 400 blue stragglers. The population does not correlate with either stellar collision rate (as would be expected if all blue stragglers were formed via collisions) or total mass (as would be expected if all blue stragglers were formed via the unhindered evolution of a subset of the stellar population). In this paper, we support the idea that blue stragglers are made through both channels. The number produced via collisions tends to increase with cluster mass. In this paper we show how the current population produced from primordial binaries decreases with increasing cluster mass; exchange encounters with third, single, stars in the most massive clusters tend to reduce the fraction of binaries containing a primary close to the current turn-off mass. Rather their primaries tend to be somewhat more massive (~1-3 M_sun) and have evolved off the main sequence, filling their Roche lobes in the past, often converting their secondaries into blue stragglers (but more than 1 Gyr or so ago and thus they are no longer visible as blue stragglers). We show that this decline in the primordial blue straggler population is likely to be offset by the increase in the number of blue stragglers produced via collisions. The predicted total blue straggler population is therefore relatively independent of cluster mass, thus matching the observed population. This result does not depend on any particular assumed blue straggler lifetime.
description: 7 pages, 6 figures; MNRAS in press
Testing a thermodynamic approach to collective animal behavior in laboratory fish schools
Creators: name: Giannini, Julia A.
name: Puckett, James G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Collective behaviors displayed by groups of social animals are observed frequently in nature. Understanding and predicting the behavior of complex biological systems is dependent on developing effective descriptions and models. While collective animal systems are characteristically non-equilibrium, we can employ concepts from equilibrium statistical mechanics to motivate the measurement of material-like properties in laboratory animal aggregates. Here, we present results from a new set of experiments that utilize high speed footage of two-dimensional schooling events, particle tracking, and projected static and dynamic light fields to observe and control the behavior of negatively phototaxic fish schools ($\textit{Hemigrammus}$ $\textit{bleheri}$). First, we use static light fields consisting of dark circular regions to produce visual stimuli that confine the schools to a range of areas. We find that the school has a maximum density independent of group size, and that the swim pressure increases linearly with number density, suggesting that unperturbed schools exist on an isotherm. Next, we use dynamic light fields where the radius of the dark region shrinks linearly with time to compress the schools. We find that the effective temperature parameter depends on the compression time and our results are thus consistent with the school having a constant heat flux. These findings provide further evidence for the utility of effective thermodynamic descriptions descriptions of non-equilibrium systems in collective animal behavior.
Characterizing low contrast Galactic open clusters with GAIA DR2
Creators: name: Angelo, M. S.
name: Santos, J. F. C.
name: Corradi, W. J. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this study, we characterized 16 objects previously classified as faint or low contrast Galactic open clusters (OCs). We employed parameters associated to the OCs dynamical evolution: core ($r_c$), tidal ($r_t$) and half-mass ($r_{hm}$) radii, age and crossing time ($t_{cr}$). Relations among these parameters were exploited to draw some evolutionary connections. We also included 11 OCs with previous characterizations to provide wider coverage of the parameters space. The investigated sample spans a considerable range in age (log (t/yr) ~7.0 - 9.7) and Galactocentric distance ($R_G$ ~ 6 - 11 kpc). Most of them present solar metallicity. We employed GAIA DR2 astrometry and photometry and selected member stars through a decontamination algorithm which explores the 3D astrometric space ($μ_α$, $μ_δ$, $\varpi$) to assign membership likelihoods. Previous studies of most of these objects were based mostly on photometric information. All investigated OCs were proved to be real stellar concentrations and relations among their parameters indicate a general disruption scenario in which OCs tend to be more concentrated as they evolve. Internal interactions sucessively drive OCs to develop more dynamically relaxed structures and make them less subject to mass loss due to tidal effects. Tidal radius tends to increase with $R_G$ in accordance with the strength of the Galactic tidal field. Besides, the correlation between the $r_c$ and the dynamical ratio $τ_{\textrm{dyn}}$ = age/$t_{cr}$ suggests two distinct evolutionary sequences, which may be consequence of different initial formation conditions.
description: 19 pages, 5 figures. Accept for publication in MNRAS
Why does Low-Luminosity AGN Fueling Remain an Unsolved Problem?
Creators: name: Martini, Paul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Despite many years of effort, observational studies have not found a strong correlation between the presence of any proposed fueling mechanism and low-luminosity AGN. After a discussion of the mass requirements for fueling, I summarize this observational work and provide a number of hypotheses for why the nature of AGN fueling has remained unresolved. In particular, I stress the potential importance of the increasing number of candidate fueling mechanisms with decreasing mass accretion rate, the relevant spatial scales for different fueling mechanisms, and the lifetime of an individual episode of nuclear accretion. The episodic AGN lifetime is a particularly relevant complication if it is comparable to or shorter than the time that the responsible fueling mechanisms are observationally detectable. I conclude with a number of relatively accessible areas for future investigation.
description: 7 pages, 2 figures. Invited review to appear in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei," Proc. IAU 222 (Gramado, Brazil), eds. Th. Storchi Bergmann, L.C. Ho, H.R. Schmitt
Landau poles in condensed matter systems
Creators: name: Jian, Shao-Kai
name: Barnes, Edwin
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The existence or not of Landau poles is one of the oldest open questions in non-asymptotic quantum field theories. We investigate the Landau pole issue in two condensed matter systems whose long-wavelength physics is described by appropriate quantum field theories: the critical quantum magnet and Dirac fermions in graphene with long-range Coulomb interactions. The critical quantum magnet provides a classic example of a quantum phase transition, and it is well described by the $ϕ^4$ theory. We find that the irrelevant but symmetry-allowed couplings, such as the $ϕ^6$ potential, can significantly change the fate of the Landau pole in the $ϕ^4$ theory. We obtain the coupled beta functions of a $ϕ^4 + ϕ^6$ potential at both small and large orders. Already from the 1-loop calculation, the Landau pole is replaced by an ultraviolet fixed point. A Lipatov analysis at large orders reveals that the inclusion of a $ϕ^6$ term also has important repercussions for the high-order expansion of the beta functions. We also investigate the role of the Landau pole in 2+1 dimensional Dirac fermions with Coulomb interactions, e.g., graphene. Both the weak-coupling perturbation theory up to 2 loops and a low-order large-N calculation show the absence of a Landau pole. Furthermore, we calculate the asymptotic expansion coefficients of the beta function. We find that the asymptotic coefficient is bounded by that of a $ϕ^4$ theory, so graphene is free from Landau poles if the $ϕ^4$ theory does not manifest a Landau pole. We briefly discuss possible experiments that could potentially probe the existence of a Landau pole in these systems. Studying Landau poles in suitable condensed matter systems is of considerable fundamental importance since the relevant Landau pole energy scales in particle physics, whether it is quantum electrodynamics or Higgs physics, are completely unattainable.
description: 17 pages, 5 figures
How peace education motivates youth peacebuilding: Examples from Pakistan
Creators: name: Cromwell, Alexander
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 44
subject: Human society

description: This article examines the impact of four peace education programs involving Pakistani youth to illuminate peace education’s role in peacebuilding efforts in conflict contexts. It argues that alumni tried to replicate their individual transformations as stimulated by these peace education programs. They did so through community-level projects modelled after the same program processes that had transformed them. Impact on peacebuilding was supported by peace education programs combining different theories of change, focusing on follow-on projects, and providing support structures for alumni. Because alumni modelled their projects after their program experiences, programs should be more transparent in order to maximize impact.
The DZERO Level 3 Data Acquistion System
Creators: name: Angstadt, B.
name: Brooijmans, G.
name: Chapin, D.
name: Clements, M.
name: Charak, D.
name: Cutts, D.
name: Fuess, S.
name: Haas, A.
name: Hauser, R.
name: Kulyavtsev, A.
name: Leichtman, D.
name: Mattingly, S. E. K
name: Mulders, M.
name: Padley, P.
name: Petravick, D.
name: Rechenmacher, R.
name: Watts, G.
name: Zhang, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The DZERO experiment located at Fermilab has recently started RunII with an upgraded detector. The RunII physics program requires the Data Acquisition to readout the detector at a rate of 1 KHz. Events fragments, totaling 250 KB, are readout from approximately 60 front end crates and sent to a particular farm node for Level 3 Trigger processing. A scalable system, capable of complex event routing, has been designed and implemented based on commodity components: VMIC 7750 Single Board Computers for readout, a Cisco 6509 switch for data flow, and close to 100 Linux-based PCs for high-level event filtering.
description: Talk and poster from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 3 pages, LaTeX, 2 eps figures. PSN MOGT002 and TUGP010
The cognitive control of eating and body weight : It's more than what you think : It's more than what you "think"
Creators: name: Davidson, Terry
name: Jones, Sabrina
name: Roy, Megan
name: Stevenson, Richard J.
Publisher: name: American University
Year: 2023

description: Over the past decade, a great deal of research has established the importance of cognitive processes in the control of energy intake and body weight. The present paper begins by identifying several of these cognitive processes. We then summarize evidence from human and nonhuman animal models, which shows how excess intake of obesity-promoting Western diet (WD) may have deleterious effects on these cognitive control processes. Findings that these effects may be manifested as early-life deficits in cognitive functioning and may also be associated with the emergence of serious late-life cognitive impairment are described. Consistent with these possibilities, we review evidence, obtained primarily from rodent models, that consuming a WD is associated with the emergence of pathophysiologies in the hippocampus, an important brain substrate for learning, memory, and cognition. The implications of this research for mechanism are discussed within the context of a vicious-cycle model, which describes how eating a WD could impair hippocampal function, producing cognitive deficits that promote increased WD intake and body weight gain, which could contribute to further hippocampal dysfunction, cognitive decline, and excess eating and weight gain.
title: Regulation of Cell Cycle by E2F1 in Primary Cells
Creators: name: Lomazzi, Marina
Publisher: name: The Open University
Year: 2004

description: Deregulation of the retinoblastoma protein (pRB) pathway is a hallmark of cancer, and in the absence of other genetic alterations, results in lack of differentiation, hyperproliferation and apoptosis. pRB acts as a transcriptional repressor by targeting the E2F transcription factors whose functions are required for S phase entry.

 Increased E2F activity can induce S phase in quiescent cells and this fact is a central element of most models for the development of cancer. I provide evidence that E2F1 alone is not sufficient to induce S phase in diploid mouse and human fibroblasts. However, increased E2F1 activity can result in S phase entry in diploid fibroblasts in which the p53-mediated Gl checkpoint is suppressed. Furthermore, I show that E2F1 can induce S phase in primary mouse fibroblasts lacking pRB. These results demonstrate that in addition to working as an E2F-dependent transcriptional repressor, pRB is also required for retaining the Gl checkpoint in response to unprogrammed proliferative signals.

 The role of E2F in cell proliferation is not completely understood because it is not known if the E2Fs mainly function as transcriptional repressors or activators. E2Fs need dimerisation with a DP protein to give rise to functional E2F activity and to regulate promoters containing E2F binding sites. I inactivated endogenous DP in tissue culture by RNA interference providing evidence that loss of DPI abrogates E2F DNA binding activity. DP is required for tumour and normal cell growth. In addition, the expression of E2F target genes is severely impaired. These results define a crucial role for DPI in cell proliferation.
Advancement of LANSCE Accelerator Facility as a 1-MW Fusion Prototypic Neutron Source
Creators: name: Batygin, Yuri K.
name: Pitcher, Eric J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The Fusion Prototypic Neutron Source (FPNS) is considered to be a testbed for scientific understanding of material degradation in future nuclear fusion reactors [1-3]. The primary mission of FPNS is to provide a damage rate in iron samples of 8-11 dpa/calendar year with He/dpa ratio of ~10 appm in irradiation volume of 50 cm3 or larger with irradiation temperature 300 - 1000o C and flux gradient less than 20%/cm in the plane of the sample. The Los Alamos Neutron Science Center (LANSCE) is an attractive candidate for the FPNS project. The Accelerator Facility was designed and operated for an extended period as a 0.8-MW Meson Factory. The existing setup of the LANSCE accelerator complex can nearly fulfill requirements of the fusion neutron source station. The primary function of the upgraded accelerator systems is the safe and reliable delivery of a 1.25-mA continuous proton beam current at 800-MeV beam energy from the switchyard to the target assembly to create 1 MW power of proton beam interacting with a solid tungsten target. The present study describes existing accelerator setup and further development required to meet the needs of FPNS project.
Comment on: 'Universal Behavior of Load Distribution in Scale-free Networks'
Creators: name: Barthelemy, Marc
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a previous Letter (cond-mat/0106565), Goh et al have presented a numerical study of the load--or betweenness centrality--distribution in a scale-free network whose degree distribution follows a power law with a tunable exponent $γ$. They showed that the load $\ell$ is distributed according to a power-law with exponent $δ$. The authors claimed that $δ$ is universal, ie. independent of the exponent $γ$. In this comment, we use two different ways of checking numerically this universality and we show that it does not hold.
description: 1 page, 2 figures, shortened version for PRL
The cognitive control of eating and body weight : It's more than what you think : It's more than what you "think"
Creators: name: Davidson, Terry
name: Jones, Sabrina
name: Roy, Megan
name: Stevenson, Richard J.
Publisher: name: Frontiers
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology

description: Over the past decade, a great deal of research has established the importance of cognitive processes in the control of energy intake and body weight. The present paper begins by identifying several of these cognitive processes. We then summarize evidence from human and nonhuman animal models, which shows how excess intake of obesity-promoting Western diet (WD) may have deleterious effects on these cognitive control processes. Findings that these effects may be manifested as early-life deficits in cognitive functioning and may also be associated with the emergence of serious late-life cognitive impairment are described. Consistent with these possibilities, we review evidence, obtained primarily from rodent models, that consuming a WD is associated with the emergence of pathophysiologies in the hippocampus, an important brain substrate for learning, memory, and cognition. The implications of this research for mechanism are discussed within the context of a vicious-cycle model, which describes how eating a WD could impair hippocampal function, producing cognitive deficits that promote increased WD intake and body weight gain, which could contribute to further hippocampal dysfunction, cognitive decline, and excess eating and weight gain.
Incentives to Corporate Governance Activism
Creators: name: Leech, Dennis
name: Leech, Dennis
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: Financial Economics
subject: Corporate governance
subject: shareholder activism
subject: incentives
subject: free rider problem
subject: agency

description: This paper considers the incentives faced by investors (financial institutions) to become actively involved in the direction of their under-performing portfolio companies as proposed by recent policy reports on corporate governance. It proposes a metric by which to measure the returns to activism in terms of the size of holding, measures of risk and return to the company, the degree of under performance and the level of commission received by fiduciary fund managers. By comparing this with costs of activism it proposes a method by which 'significant shareholdings' may be estimated. A significant shareholding is the level above which a shareholding in a company may be said to have private incentives to activism. This approach is applied to two groups of companies listed on the London Stock Exchange, the top 250 and a ten percent random sample. The results indicate that there are very strong incentives for shareholders to be activist participants in corporate governance among the top 250 companies while there is much more diversity among the smaller companies. Results differ considerably between those where the shareholder is an own-account investor and a fund manager.
Approximate cores of games and economies with clubs.
Creators: name: Kovalenkov, Alexander
name: Wooders, Myrna Holtz
name: Kovalenkov, Alexander
name: Wooders, Myrna Holtz
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: Public Economics
subject: cooperative games
subject: clubs
subject: approximate cores
subject: e®ective small groups
subject: parameterized collections of games
subject: NTU games

description: We introduce the framework of parameterized collections of games with and without sidepayments and provide three nonemptiness of approximate core theorems. The parameters bound (a) the number of approximate types of players and the size of the approximation and (b) the size of nearly e®ective groups of players and their distance from exact e®ectiveness. Our theorems are based on a new notion of partitionbalanced pro¯les and approximately partition-balanced pro¯les. The results are applied to a new model of an economy with clubs. In contrast to the extant literature, our approach allows both widespread externalities and uniform results.
Information and Command
Creators: name: Harrison, Mark
name: Harrison, Mark
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural and Food Policy
Teaching/Communication/Extension/Profession

description: Information adds value to transactions in three ways: it supports reputations, permits customisation, and provides yardsticks. In the Soviet economy such information was frequently not produced; if produced, it was often concealed; whether concealed or not, it was often of poor quality. In short, the Soviet command system forced economic growth on the basis of a relatively low–value information stock. This may help explain aspects of Soviet postwar economic growth and slowdown, the collapse of the command system, and the persistence of low output after the collapse.
Emergence of an Ultra-Red Ultra-Massive Galaxy Cluster Core at $z=4$
Creators: name: Long, Arianna S.
name: Cooray, Asantha
name: Ma, Jingzhe
name: Casey, Caitlin M.
name: Wardlow, Julie L.
name: Nayyeri, Hooshang
name: Ivison, R. J.
name: Farrah, Duncan
name: Dannerbauer, Helmut
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent simulations and observations of massive galaxy cluster evolution predict that the majority of stellar mass build up happens within cluster members by $z=2$, before cluster virialization. Protoclusters rich with dusty, star-forming galaxies (DSFGs) at $z>3$ are the favored candidate progenitors for these massive galaxy clusters at $z\sim0$. We present here the first study analyzing stellar emission along with cold dust and gas continuum emission in a spectroscopically confirmed $z=4.002$ protocluster core rich with DSFGs, the Distant Red Core (DRC). We combine new HST and Spitzer data with existing Gemini, Herschel, and ALMA observations to derive individual galaxy-level properties, and compare them to coeval field and other protocluster galaxies. All of the protocluster members are massive ($>10^{10}$ M$_\odot$), but not significantly more so than their coeval field counterparts. Within uncertainty, all are nearly indistinguishable from galaxies on the star-forming vs. stellar mass main-sequence relationship, and on the star formation efficiency plane. Assuming no future major influx of fresh gas, we estimate that these gaseous DSFGs will deplete their gas reservoirs in $\sim300$ Myr, becoming the massive quiescent ellipticals dominating cluster cores by $z\sim3$. Using various methodologies, we derive a total $z=4$ halo mass of $\sim10^{14}$ M$_\odot$, and estimate that the DRC will evolve to become an ultra-massive cluster core of mass $\gtrsim10^{15}$ M$_\odot$ by $z=0$.
description: 16 pages, 7 figures, submitted to ApJ with first round of revisions incorporated
Social Conformity and Equilibrium in Pure Strategies in Games with Many Players
Creators: name: Wooders, Myrna
name: Cartwright, Edward
name: Selten, Reinhard
name: Wooders, Myrna
name: Cartwright, Edward
name: Selten, Reinhard
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural and Food Policy
Research Methods/ Statistical Methods

description: We introduce a framework of noncooperative pregames, in which players are characterized by their attributes, and demonstrate that for all games with sufficiently many players, there exist approximate (ε) Nash equilibria in pure strategies. In fact, every mixed strategy equilibrium can be used to construct an ε-equilibrium in pure strategies, an ‘ε-purification’ result. Our main result is a social conformity theorem. Interpret a set of players, all with attributes in some convex subset of attribute space and all playing the same strategy, as a society. Observe that the number of societies may be as large as the number of players. Our social conformity result dictates that, given ε > 0, there is an integer L, depending on ε but not on the number of players, such that any sufficiently large game has an ε-equilibrium in pure strategies that induces a partition of the player set into fewer than L societies.
Synthesis report : UBC water
Creators: name: Willock, Angela
name: Tyrrell, Alexandra
name: Abousaleh, Mustafa
Publisher: name: The University of British Columbia
Year: 2012

description: [Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”]
The evolution of substructure III: the outskirts of clusters
Creators: name: Gill, Stuart P. D.
name: Knebe, Alexander
name: Gibson, Brad K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an investigation of satellite galaxies in the outskirts of galaxy clusters taken from a series of high-resolution N-body simulations. We focus on the so-called "backsplash population", i.e. satellite galaxies that once were inside the virial radius of the host but now reside beyond it. We find that this population is significant in number and needs to be appreciated when interpreting the various galaxy morphology environmental relationships and decoupling the degeneracy between nature and nurture. Specifically, we find that approximately half of the galaxies with current clustercentric distance in the interval 1-2 virial radii of the host are backsplash galaxies which once penetrated deep into the cluster potential, with 90% of these entering to within 50% of the virial radius. These galaxies have undergone significant tidal disruption, loosing on average 40% of their mass. This results in a mass function for the backsplash population different to those galaxies infalling for the first time. We further show that these two populations are kinematically distinct and should be observable within existent spectroscopic surveys.
description: 7 pages, 8 figures, MNRAS accepted - minor editing without changing the conclusions