cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence on smoothness in penalized likelihood regression for binary data
Creators: name: O'Connell, Julie Anne
Publisher: name: American University
Year: 2023

description: Penalized likelihood is a nonparametric regression technique that can be used to estimate a mean function for binary data. This fitting procedure incorporates a penalty for roughness in the fitting function; the weight given to the penalty is controlled by a 'smoothing parameter'. As part of the fitting procedure, the optimal value of the smoothing parameter and the optimal function estimate are determined from the data. We wish to measure the sensitivity of the smoothing parameter to gross changes in the data. Since penalized likelihood curve fitting requires both a grid search to determine the optimal value of the smoothing parameter and iterative solution for each grid point, naive calculations that determine the change in the optimal value of the smoothing parameter when each data value is modified are computationally intensive and time-consuming. We have developed techniques based on analytical and numerical approximations for measuring sensitivity in penalized likelihood regression with binary data. These techniques have been applied to selected data sets to compute changes in the smoothing parameter resulting from changes in individual data values.
Chancellor Blvd/ East Mall/ N. W. Marine Dr. Intersection Redesign : Detailed Design Report
Creators: name: Philip, Nicole
name: Lari, Farindokht
name: Piva, Lindsay
name: McIlwain, Sam
name: Yu, Jason
name: Flack, Curtis
Publisher: name: The University of British Columbia
Year: 2017

description: Red Fish Blue Fish Consulting (RB Consulting) was retained by UBC SEEDS to undertake the detailed design of the intersection st Chancellor Boulevard and East Mall. Expectations for the redesigned intersection included: improved safety and accessibility for all users, it would act as a gateway to UBC, accommodation of growth, and a focus on sustainability. It is assumed that the reader has access to past reports completed by RB Consulting related to this intersection. Enclosed are the final detailed drawings, along with all key information about the design. The design consists of a single-lane roundabout with a separated bike lane, rain gardens in the medians for runoff catchment, and a glued laminated timber (glulam) Welcome Archway spanning the West entrance of Marine Drive. The consulting team has completed a detailed economic analysis of the project in order to provide a cost estimate of $1.1 million and an expected contractor schedule of two and a half months. The angled orientation of the intersection will reduce vehicle speeds, and the probability of collisions by having fewer conflict points than the existing or possible signalized layouts. With a separated bike land and simplified crosswalks, this intersection will encourage sustainable travel modes and also increase safety for those users. Emissions and noise will be reduced by the new intersection from minimal idle times, enhancing sustainability and the local community. Furthermore, the footprint of the intersection reduces the overall impervious surface, while the rain gardens are designed to capture all of the remaining runoff from the intersection. Lastly, the Welcome Arch will highlight sustainability with locally-sourced, environmentally-friendly glulam material, and includes additional features that support the local animal habitat. Prior construction at the intersection the following need to be provided to confirm design assumptions: geotechnical report, survey data, and exact underground utility locations. 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.”
DAFNE
Creators: name: Guiducci, S.
name: Alesini, D.
name: Benedetti, G.
name: Biagini, M. E.
name: Biscari, C.
name: Boni, R.
name: Boscolo, M.
name: Clozza, A.
name: Monache, G. Delle
name: Di Pirro, G.
name: Drago, A.
name: Gallo, A.
name: Ghigo, A.
name: Marcellini, F.
name: Mazzitelli, G.
name: Milardi, C.
name: Pellegrino, L.
name: Preger, M. A.
name: Raimondi, P.
name: Ricci, R.
name: Sanelli, C.
name: Serio, M.
name: Sgamma, F.
name: Stecchi, A.
name: Vaccarezza, C.
name: Zobov, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The results of 2002 DAFNE operation for the two experiments KLOE and DEAR are described. During 2003 a long shutdown has been dedicated to the installation of new Interaction Regions (IR) and to hardware modifications and upgrades. In the last section optics studies and performances expectations for the new machine configuration are reported.
description: Invited talk at the Workshop on e+e- in the 1-2 GeV range, Alghero, Italy, September 2003 (eConf C0309101)
Impacts of Food Safety Recalls and Consumer Information on Restaurant Performance
Creators: name: Pruitt, J. Ross
name: Holcomb, Rodney B.
name: Pruitt, J. Ross
name: Holcomb, Rodney B.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: food away from home
subject: food safety
subject: health
subject: nutrition
subject: restaurant performance

description: Consumer expenditures on purchases of food away from home have risen in recent years to comprise nearly half of consumer food budgets. Using the monthly National Restaurant Association Restaurant Performance Index, we seek to determine the factors influencing restaurateurs’ perceptions of their current situation, same-store sales, and customer traffic from July 2002 through March 2017. Macroeconomic variables have little impact on restaurant performance, but concerns about public health perceptions do impact restaurateurs’ outlook. Concerns over the link between meat and poultry consumption and cancer also negatively impact restaurant owners’ perceptions of performance.
The Self-Organized Critical Multiverse
Creators: name: Kartvelishvili, Guram
name: Khoury, Justin
name: Sharma, Anushrut
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently a dynamical selection mechanism for vacua based on search optimization was proposed in the context of false-vacuum eternal inflation on the landscape. The search algorithm, defined by local vacuum transitions, is optimal in regions of the landscape where the dynamics are tuned at criticality, with de Sitter vacua having an average lifetime of order their Page time. The purpose of this paper is to shed light on the nature of the dynamical phase transition at the Page lifetime. We focus on a finite region of the landscape, which exchanges volume with the rest of the landscape and as such acts as an open system. Through a change of variables the master equation governing the comoving volume of de Sitter vacua is mapped to a stochastic equation for coupled overdamped stochastic oscillators -- the well-known Ornstein-Uhlenbeck process. The rest of the landscape, which acts as an environment, is assumed to result in a non-vanishing driving term for all sites in the region with uncorrelated, white noise fluctuations (though not necessarily Gaussian). We first show that the static susceptibility of the oscillators diverges as the average lifetime of de Sitter vacua approaches the Page time. Thus, optimal regions of the landscape are most susceptible to volume influx from their environing landscape. We then show that the displacement fluctuations for the oscillators exhibit a $1/f$ power spectrum over a broad range of frequencies, precisely at the critical Page lifetime distribution. A $1/f$ power spectrum is a hallmark of non-equilibrium systems at criticality. In analogy with sand avalanches in the abelian sandpile or neuronal avalanches in the brain, de Sitter vacua at criticality can be thought of as undergoing scale invariant volume fluctuation avalanches.
description: 14 pages. v2: Added appendix describing time evolution of driving term; version published in JCAP
The incision pattern and incision efficiency of (+)anti-BPDE-DNA adduct by the Escherichia coli UvrABC excision repair system
Creators: name: Sun, Yubo
Publisher: name: American University
Year: 2023

description: The major objective of this research was to study how the DNA sequence surrounding a DNA adduct affects the efficiency of repair of the adduct by the Escherichia coli UvrABC repair system. The principal adduct formed by the reaction of (7R,8S)-dihydroxy-(9S,10R)-epoxy-7,8,9,10-tetrahydro-benzo (a) pyrene ((+)anti-BPDE) with DNA is a relatively stable adduct attached to the N2 position of guanine (N2-dG adduct). Using $\rm\lbrack H\sp3\rbrack$-(+)anti-BPDE, adduct stability was determined. Results showed that 98% of the (+)anti-BPDE N2-dG adduct was stable at 25$\sp\circ$C over a period of two weeks. The effect of the surrounding sequence on the recognition of damage and the efficiency of incision by the UvrABC repair enzymes were studied using high resolution gel electrophoresis followed by densitometric scanning of the autoradiograms. The UvrABC enzyme generally incised the 8th phosphodiester bond 5$\sp\prime$ and the 5th phosphodiester bond 3$\sp\prime$ to the adducted base. Aberrant cutting was also observed. The UvrABC incision efficiency was only weakly correlated to the BPDE binding. At some sites, such as the G doublets and the NarI recognition sequence (GGCGCC), the efficiency of incision varied markedly, showing a large effect of the surrounding DNA sequence. At some sites, such as the second G of the TGG, in which the second G was a mutation hotspot and also a poorly repaired site, poor efficiency of repair might increase the mutation rate. However, in general, there was no clear connection between the mutation rate and the efficiency of repair.
Cosmogenic neutrino fluxes under the effect of active-sterile secret interactions
Creators: name: Fiorillo, Damiano F. G.
name: Miele, Gennaro
name: Morisi, Stefano
name: Saviano, Ninetta
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Ultra High Energy cosmogenic neutrinos may represent a unique opportunity to unveil possible new physics interactions once restricted to the neutrino sector only. In the present paper we study the observable effects of a secret active-sterile interactions, mediated by a pseudoscalar, on the expected flux of cosmogenic neutrinos. The results show that for masses of sterile neutrinos and pseudoscalars of hundreds MeV, necessary to evade cosmological, astrophysical and elementary particle constraints, the presence of such new interactions can significantly change the energy spectrum of cosmogenic neutrinos at Earth in the energy range from PeV to ZeV. Interestingly, the distortion of the spectrum results to be detectable at GRAND apparatus if the scalar mediator mass is around 250 MeV and the UHECRs are dominated by the proton component. Larger mediator masses or a chemical composition of UHECRs dominated by heavier nuclei would require much larger cosmic rays apparatus which might be available in future.
description: 10 pages, 3 figures
Criteria regarding the energetic sizing of the assembly physical phenomena met in an industrial technological process
Creators: name: Vlad, Mircea Florentin
name: Forje, Alexandru
name: Pop, Mihai G.M.
name: Forje, Iulia
name: Predan, Florian
name: Manea, Dumitru
name: Morariu, Maria
name: Vlad, Doina
Publisher: name: figshare
Year: 2020
Subjects: subject: 91305 Energy Generation, Conversion and Storage Engineering
subject: FOS: Mechanical engineering
subject: 91503 Engineering Practice
subject: FOS: Other engineering and technologies
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 91401 Electrometallurgy
subject: FOS: Environmental engineering
subject: 90702 Environmental Engineering Modelling

description: The article presents a study which is based on the analysis of the energy consumption, from a global point of view, structured on workshops and operations inside a steel foundry, where the elaboration of the steel is made by arc welding. The superposing and inter-conditioning of these consumptions were studied, starting from the existing equipment and from the elaboration technology used. The most relevant aspects were extracted. New methods and relationships are established, which will allow the global expression of economic and technical efficiencies and overall efficacy.. It is stated that the product between the statistically determined values of the energy consumed and the associated time represents a characteristic size for the action,the product having an optimal statistical value, against which evaluations of different technological scenarios can be performed.
Andrena (Thysandrena) livida LaBerge 1977
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena livida

description: Andrena (Thysandrena) livida LaBerge, 1977
[Holotype: INHS; ♀ 1.61 km of Portal, Cochise Co., Arizona, US; April 13, 1961]
This species was reported in the Gulf Coast in Mulegé, BCS (LaBerge 1977). See fig. 22.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 68, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Addressing the Association between Action Video Game Playing Experience and Visual Search in Naturalistic Multisensory Scenes
Creators: name: Hamzeloo, Mohammad
name: Kvasova, Daria
name: Soto-Faraco, Salvador
Publisher: name: Brill Online
Year: 2024
Subjects: classificationCode: 520406
subject: Sensory processes, perception and performance

description: Prior studies investigating the effects of routine action video game play have demonstrated improvements in a variety of cognitive processes, including improvements in attentional tasks. However, there is little evidence indicating that the cognitive benefits of playing action video games generalize from simplified unisensory stimuli to multisensory scenes — a fundamental characteristic of natural, everyday life environments. The present study addressed if video game experience has an impact on crossmodal congruency effects when searching through such multisensory scenes. We compared the performance of action video game players (AVGPs) and non-video game players (NVGPs) on a visual search task for objects embedded in video clips of realistic scenes. We conducted two identical online experiments with gender-balanced samples, for a total of N = 130. Overall, the data replicated previous findings reporting search benefits when visual targets were accompanied by semantically congruent auditory events, compared to neutral or incongruent ones. However, according to the results, AVGPs did not consistently outperform NVGPs in the overall search task, nor did they use multisensory cues more efficiently than NVGPs. Exploratory analyses with self-reported gender as a variable revealed a potential difference in response strategy between experienced male and female AVGPs when dealing with crossmodal cues. These findings suggest that the generalization of the advantage of AVG experience to realistic, crossmodal situations should be made with caution and considering gender-related issues.
The incision pattern and incision efficiency of (+)anti-BPDE-DNA adduct by the Escherichia coli UvrABC excision repair system
Creators: name: Sun, Yubo
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences
classificationCode: 3101
subject: Biochemistry and cell biology
classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences

description: The major objective of this research was to study how the DNA sequence surrounding a DNA adduct affects the efficiency of repair of the adduct by the Escherichia coli UvrABC repair system. The principal adduct formed by the reaction of (7R,8S)-dihydroxy-(9S,10R)-epoxy-7,8,9,10-tetrahydro-benzo (a) pyrene ((+)anti-BPDE) with DNA is a relatively stable adduct attached to the N2 position of guanine (N2-dG adduct). Using $\rm\lbrack H\sp3\rbrack$-(+)anti-BPDE, adduct stability was determined. Results showed that 98% of the (+)anti-BPDE N2-dG adduct was stable at 25$\sp\circ$C over a period of two weeks. The effect of the surrounding sequence on the recognition of damage and the efficiency of incision by the UvrABC repair enzymes were studied using high resolution gel electrophoresis followed by densitometric scanning of the autoradiograms. The UvrABC enzyme generally incised the 8th phosphodiester bond 5$\sp\prime$ and the 5th phosphodiester bond 3$\sp\prime$ to the adducted base. Aberrant cutting was also observed. The UvrABC incision efficiency was only weakly correlated to the BPDE binding. At some sites, such as the G doublets and the NarI recognition sequence (GGCGCC), the efficiency of incision varied markedly, showing a large effect of the surrounding DNA sequence. At some sites, such as the second G of the TGG, in which the second G was a mutation hotspot and also a poorly repaired site, poor efficiency of repair might increase the mutation rate. However, in general, there was no clear connection between the mutation rate and the efficiency of repair.
Light-Front Approach for Pentaquark Strong Decays
Creators: name: Cheng, Hai-Yang
name: Chua, Chun-Khiang
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Assuming the two diquark structure for the pentaquark state as advocated in the Jaffe-Wilczek model, we study the strong decays of light and heavy parity-even pentaquark states using the light-front quark model in conjunction with the spectator approximation. The narrowness of the Theta width is ascribed to the p-wave configuration of the diquark pair. Taking the Theta width as a benchmark, we estimate the rates of the strong decays Xi_{3/2}-- to Xi- pi-, Sigma- K-, Sigma_{5c}0 to D_s- p, D_{s0}*- p and Xi_{5c}0 to D_s- Sigma+, D_{s0}^{*-} Sigma+ with Sigma_{5c} Xi_{5c} being antisextet charmed pentaquarks and D_{s0}* a scalar strange charmed meson. The ratio of Gamma(P_c to Baryon D_{s0}*)/Gamma(P_c to Baryon D_s) is very useful for verifying the parity of the antisextet charmed pentaquark P_c. It is expected to be of order unity for an even parity P_c and much less than one for an odd parity pentaquark.
description: 24 pages, 2 figures
Consumer Willingness to Pay for Local Wines and Shopping Outlet Preferences
Creators: name: Everett, Connie
name: Jensen, Kim
name: Hughes, David
name: Boyer, Chris
name: Everett, Connie
name: Jensen, Kim
name: Hughes, David
name: Boyer, Chris
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: consumer
subject: food shopping outlets
subject: local wines
subject: multivariate probit
subject: probit
subject: willingness to pay

description: Tennessee recently changed its wine-marketing laws to allow wine sales in food-retailing facilities, and industry implications are still emerging. Using data from 500 wine consumers in Tennessee, this study measures willingness to pay for a Tennessee-labeled wine sold from the anticipated retail outlet. Results show consumers would pay a premium for a Tennessee red or white wine. Older females are more likely to anticipate purchasing Tennessee wine at grocery stores, convenience-oriented lower-income consumers at big box stores, and price-conscious consumers at warehouse clubs.
Role of disorder in plasmon-assisted near-field heat transfer between two-dimensional metals
Creators: name: Wise, Jonathan L.
name: Basko, Denis M.
name: Hekking, Frank W. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We perform a theoretical study of the near-field heat transfer between two atomically thin metallic layers, isolated galvanically but coupled by the Coulomb interaction, within the framework of fluctuational electrodynamics in the Coulomb limit. We clarify the role of disorder and spatial dispersion, and identify several distinct regimes of the heat transfer. We find that the plasmon contribution to the heat current is suppressed both in the clean and diffusive limits, but dominates in a parametrically wide crossover region at sufficiently high temperatures.
description: Addition of Sec. IIC. discussing the generality of the results - in particular clarifying the validity conditions for the near-field limit. Addition of Sec. VI. comparing the theoretical results to experiments. Addition of an illustrative panel in Fig. 5(b)
Understanding Spending Habits and Buying Behavior of the American Muslim Community: A Pilot Study
Creators: name: Capps, Oral
name: Ahad, Asma
name: Murano, Peter S.
name: Capps, Oral
name: Ahad, Asma
name: Murano, Peter S.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: American Muslims
subject: food and beverage choices
subject: probit/logit analysis

description: This study provides a baseline for the spending habits and buying preferences of American Muslims lacking in the extant literature. We examine American Muslims’ food and beverage spending habits and buying behaviors with regard to halal products using a survey of 195 individuals from the Chicago metropolitan area and a discrete choice modeling framework. The chief drivers in the decision to purchase food and beverage items were the purchase of halal beef, the amount spent weekly in grocery stores, the frequency of hosting Ramadan, household income and size, and ethnicity (in that order).
Latest evidence for a late time vacuum -- geodesic CDM interaction
Creators: name: Hogg, Natalie B.
name: Bruni, Marco
name: Crittenden, Robert
name: Martinelli, Matteo
name: Peirone, Simone
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform a reconstruction of the coupling function between vacuum energy and geodesic cold dark matter using the latest observational data. We bin the interaction in seventeen redshift bins but use a correlation prior to prevent rapid, unphysical oscillations in the coupling function. This prior also serves to eliminate any dependence of the reconstruction on the binning method. We use two different forms of the correlation prior, finding that both give similar results for the reconstruction of the dark matter -- dark energy interaction. Calculating the Bayes factor for each case, we find no meaningful evidence for deviation from the null interacting case, i.e. $Λ$CDM, in our reconstruction.
description: 14 pages, 7 figures. Version 2 matches published version in Physics of the Dark Universe (Figure 2 updated to better show H0 and sigma 8 tensions, additional discussion of results added in section 4.1)
Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
Creators: name: Qiao, Mu
name: Wang, Ye
name: Cai, Zhengyang
name: Du, Botao
name: Wang, Pengfei
name: Luan, Chunyang
name: Chen, Wentao
name: Noh, Heung-Ryoul
name: Kim, Kihwan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We theoretically and experimentally investigate double electromagnetically induced transparency (double-EIT) cooling of two-dimensional ion crystals confined in a Paul trap. The double-EIT ground-state cooling is observed for \Yb ions with clock state, for which EIT cooling has not been realized like many other ions with a simple $Λ$-scheme. A cooling rate of $\dot{\bar n}=34~(\pm1.8)~\rm{ms}^{-1}$ and a cooling limit of $\bar n=0.06~(\pm 0.059)$ are observed for a single ion. The measured cooling rate and limit are consistent with theoretical predictions. We apply double-EIT cooling to the transverse modes of two-dimensional (2D) crystals with up to 12 ions. In our 2D crystals, the micromotion and the transverse mode directions are perpendicular, which makes them decoupled. Therefore, the cooling on transverse modes is not disturbed by micromotion, which is confirmed in our experiment. For the center of mass mode of a 12 ions crystal, we observe a cooling rate and a cooling limit that are consistent with those of a single ion, including heating rates proportional to the number of ions. This method can be extended to other hyperfine qubits, and near ground-state cooling of stationary 2D crystals with large numbers of ions may advance the field of quantum information sciences.
description: 17 pages, 11 figures
Electron impact double ionization of helium from classical trajectory calculations
Creators: name: Geyer, Tihamer
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: With a recently proposed quasiclassical ansatz [Geyer and Rost, J. Phys. B 35 (2002) 1479] it is possible to perform classical trajectory ionization calculations on many electron targets. The autoionization of the target is prevented by a Møller type backward--forward propagation scheme and allows to consider all interactions between all particles without additional stabilization. The application of the quasiclassical ansatz for helium targets is explained and total and partially differential cross sections for electron impact double ionization are calculated. In the high energy regime the classical description fails to describe the dominant TS1 process, which leads to big deviations, whereas for low energies the total cross section is reproduced well. Differential cross sections calculated at 250 eV await their experimental confirmation.
description: LaTeX, 22 pages, 10 figures, submitted to J. Phys. B
Andrena (Thysandrena) quadrilimbata LaBerge 1977
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena quadrilimbata

description: Andrena (Thysandrena) quadrilimbata LaBerge, 1977
[Holotype: EMEC; ♀ Surprise Canyon, Panamint Mts., Inyo Co., California, US; April 8, 1955]
This species is found in both the SD and the CFP. LaBerge (1977) reported its presence in the Baja California Mountains and the Lower Colorado Desert at San Felipe, BC. We confirmed two specimens reported by LaBerge (1977) collected in Sierra Juarez in March 1967 (EMEC). Additionally, the BBPT collected 5 females in April, 2023 in the Central Desert (MABC). See fig. 23.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 68, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Stoner-Wohlfarth switching of the condensate magnetization in a dipolar spinor gas and the metrology of excitation damping
Creators: name: Shinn, Seong-Ho
name: Braun, Daniel
name: Fischer, Uwe R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider quasi-one-dimensional dipolar spinor Bose-Einstein condensates in the homogeneous-local-spin-orientation approximation, that is with unidirectional local magnetization. By analytically calculating the exact effective dipole-dipole interaction, we derive a Landau-Lifshitz-Gilbert equation for the dissipative condensate magnetization dynamics, and show how it leads to the Stoner-Wohlfarth model of a uni-axial ferro-magnetic particle, where the latter model determines the stable magnetization patterns and hysteresis curves for switching between them. For an external magnetic field pointing along the axial, long direction, we analytically solve the Landau-Lifshitz-Gilbert equation. The solution explicitly demonstrates that the magnetic dipole-dipole interaction {\it accelerates} the dissipative dynamics of the magnetic moment distribution and the associated dephasing of the magnetic moment direction. Under suitable conditions, dephasing of the magnetization direction due to dipole-dipole interactions occurs within time scales up to two orders of magnitude smaller than the lifetime of currently experimentally realized dipolar spinor condensates, e.g., produced with the large magnetic-dipole-moment atoms ${}^{166} \textrm{Er}$. This enables experimental access to the dissipation parameter $Γ$ in the Gross-Pitaevski\vı~mean-field equation, for a system currently lacking a complete quantum kinetic treatment of dissipative processes and, in particular, an experimental check of the commonly used assumption that $Γ$ is a single scalar independent of spin indices.
description: 19 pages of RevTex4-1, 6 figures; significantly revised and extended, with an added Appendix D on magnetostriction
Criteria regarding the energetic sizing of the assembly physical phenomena met in an industrial technological process
Creators: name: Vlad, Mircea Florentin
Publisher: name: figshare
Year: 2020
Subjects: subject: 91305 Energy Generation, Conversion and Storage Engineering
subject: FOS: Mechanical engineering
subject: 91503 Engineering Practice
subject: FOS: Other engineering and technologies
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 91401 Electrometallurgy
subject: FOS: Environmental engineering
subject: 90702 Environmental Engineering Modelling

description: the article presents a study which is based on the analysis of the energy consumption, from a global point of view, structured on workshops and operations inside a steel foundry, where the elaboration of the steel is made by arc welding. The superposing and inter-conditioning of these consumptions were studied, starting from the existing equipment and from the elaboration technology used. The most relevant aspects were extracted. New methods and relationships are established, which will allow the global expression of economic and technical efficiencies and overall efficacy.. It is stated that the product between the statistically determined values of the energy consumed and the associated time represents a characteristic size for the action,the product having an optimal statistical value, against which evaluations of different technological scenarios can be performed.
Communication-Efficient Distributed SGD with Error-Feedback, Revisited
Creators: name: Phuong, Tran Thi
name: Phong, Le Trieu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We show that the convergence proof of a recent algorithm called dist-EF-SGD for distributed stochastic gradient descent with communication efficiency using error-feedback of Zheng et al. (NeurIPS 2019) is problematic mathematically. Concretely, the original error bound for arbitrary sequences of learning rate is unfortunately incorrect, leading to an invalidated upper bound in the convergence theorem for the algorithm. As evidences, we explicitly provide several counter-examples, for both convex and non-convex cases, to show the incorrectness of the error bound. We fix the issue by providing a new error bound and its corresponding proof, leading to a new convergence theorem for the dist-EF-SGD algorithm, and therefore recovering its mathematical analysis.
A precise measurement of the proton elastic form factors for 1.75 less than or equal to Q(2) less than or equal to 8.83 (GeV/c)(2)
Creators: name: Clogher, Lisa
Publisher: name: American University
Year: 2023

description: The proton elastic electric and magnetic form factors, $G\sb{Ep}(Q\sp2)$ and $G\sb{Mp}(Q\sp2),$ have been separated out to $Q\sp2$ of 8.83 $\rm (GeV/c)\sp2,$ more than doubling the $Q\sp2$ range of previous data. The results for $G\sb{Mp}(Q\sp2)/\mu\sb{p}G\sb{D}(Q\sp2)$ decrease smoothly from 1.05 to 0.92, while $G\sb{Ep}(Q\sp2)/G\sb{D}(Q\sp2)$ is consistent with unity. Comparisons are made to QCD Sum Rule, diquark, constituent quark, and VMD models, none of which agree with all of the new data. The ratio $Q\sp2F\sb2/F\sb1$ approaches a constant value for $Q\sp2$ $>$ 3 $\rm (GeV/c)\sp2.$.
Relaxed Gauss-Newton methods with applications to electrical impedance tomography
Creators: name: Jauhiainen, Jyrki
name: Kuusela, Petri
name: Seppänen, Aku
name: Valkonen, Tuomo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 90C26 (Primary), 49M15, 35R30, 68U10 (Secondary)

description: As second-order methods, Gauss--Newton-type methods can be more effective than first-order methods for the solution of nonsmooth optimization problems with expensive-to-evaluate smooth components. Such methods, however, often do not converge. Motivated by nonlinear inverse problems with nonsmooth regularization, we propose a new Gauss--Newton-type method with inexact relaxed steps. We prove that the method converges to a set of disjoint critical points given that the linearisation of the forward operator for the inverse problem is sufficiently precise. We extensively evaluate the performance of the method on electrical impedance tomography (EIT).
description: 43 pages, 29 figures
A precise measurement of the proton elastic form factors for 1.75 less than or equal to Q(2) less than or equal to 8.83 (GeV/c)(2)
Creators: name: Clogher, Lisa
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences
classificationCode: 5106
subject: Nuclear and plasma physics
classificationCode: 5107
subject: Particle and high energy physics

description: The proton elastic electric and magnetic form factors, $G\sb{Ep}(Q\sp2)$ and $G\sb{Mp}(Q\sp2),$ have been separated out to $Q\sp2$ of 8.83 $\rm (GeV/c)\sp2,$ more than doubling the $Q\sp2$ range of previous data. The results for $G\sb{Mp}(Q\sp2)/\mu\sb{p}G\sb{D}(Q\sp2)$ decrease smoothly from 1.05 to 0.92, while $G\sb{Ep}(Q\sp2)/G\sb{D}(Q\sp2)$ is consistent with unity. Comparisons are made to QCD Sum Rule, diquark, constituent quark, and VMD models, none of which agree with all of the new data. The ratio $Q\sp2F\sb2/F\sb1$ approaches a constant value for $Q\sp2$ $>$ 3 $\rm (GeV/c)\sp2.$.
Efficient computation of backprojection arrays for 3D light field deconvolution
Creators: name: Eberhart, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Light field deconvolution allows three-dimensional investigations from a single snapshot recording of a plenoptic camera. It is based on a linear image formation model, and iterative volume reconstruction requires to define the backprojection of individual image pixels into object space. This is effectively a reversal of the point spread function (PSF), and backprojection arrays H' can be derived from the shift-variant PSFs H of the optical system, which is a very time consuming step for high resolution cameras. This paper illustrates the common structure of backprojection arrays and the significance of their efficient computation. A new algorithm is presented to determine H' from H, which is based on the distinct relation of the elements' positions within the two multi-dimensional arrays. It permits a pure array re-arrangement, and while results are identical to those from published codes, computation times are drastically reduced. This is shown by benchmarking the new method using various sample PSF arrays against existing algorithms. The paper is complemented by practical hints for the experimental acquisition of light field PSFs in a photographic setup.
description: 15 pages, 11 figures, 1 table. This is a thoroughly reworked version of the manuscript, with a clearer structure. It avoids any ambigiuties envoked by using the term 'transpose' in the context of multi-dimensional arrays
Scissors modes of two-component degenerate gases: Bose-Bose and Bose-Fermi mixtures
Creators: name: Rodriguez, M.
name: Pedri, P.
name: Törmä, P.
name: Santos, L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the scissors modes in binary mixtures of degenerate dilute quantum gases, for both Bose-Bose and Bose-Fermi mixtures. For the latter we consider both the superfluid and normal hydrodynamic and collisionless regimes. We analyze the dependence of the frequencies of the scissors modes and their character as a function of the Bose-Fermi coupling and the trap geometry. We show that the scissors mode can reveal a clear trace of the hydrodynamic behavior of the Fermi gas.
description: 7 pages, 4 figures
Shadow and Quasinormal Modes of a Rotating Loop Quantum Black Hole
Creators: name: Liu, Cheng
name: Zhu, Tao
name: Wu, Qiang
name: Jusufi, Kimet
name: Jamil, Mubasher
name: Azreg-Aïnou, Mustapha
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we construct an effective rotating loop quantum black hole (LQBH) solution, starting from the spherical symmetric LQBH by applying the Newman-Janis algorithm modified by Azreg-Aïnou's non-complexification procedure, and study the effects of loop quantum gravity { (LQG) on its shadow}. Given the rotating {LQBH}, we discuss its horizon, ergosurface, and regularity {as} $r \to 0$. Depending on the values of the specific angular momentum $a$ and the polymeric function $P$ arising from {LQG}, we {find} that the rotating solution we obtained can represent a regular black hole, a regular extreme black hole, or a regular spacetime {without horizon (a non-black-hole solution)}. We also {study} the effects of {LQG} and rotation, and {show} that, in addition to the specific angular momentum, the polymeric function {also} causes deformations in the size and shape of the black hole shadow. Interestingly, for a given value of $a$ and inclination angle $θ_0$, the apparent size of the shadow monotonically decreases, and the shadow gets more distorted with increasing $P$. We also {consider the effects of $P$ on the deviations from the circularity of the shadow, and find} that the deviation from circularity increases with increasing $P$ for fixed values of $a$ and $θ_0$. Additionally, we explore the observational implications of $P$ in comparison with the latest Event Horizon Telescope (EHT) observation of the supermassive black hole, M$87$. The connection between the shadow radius and quasinormal modes in the eikonal limit as well as {the} deflection of massive particles are also considered.
description: 21 pages, 12 figures; v2: several references added and version published in Phys. Rev. D; some mistakes are corrected
Fully-Decentralized Coded Computing for Reliable Large-Scale Computing
Creators: name: Haewon Jeong
Publisher: name: Carnegie Mellon University
Year: 2020
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this thesis, I ask the question “how do we compute reliably using thousands of distributed, unreliable nodes?” We propose a system-level solution where we add redundant data across distributed nodes using the technique called “coded computing.” Our main contribution is developing strategies for a masterless, fullydecentralized
setting for important computation primitives in machine learning (ML) and scientific computing applications while minimizing the overhead of coding. For distributed matrix multiplication, we make a fundamental advance by proposing
coded computing strategies that outperform prior works by an unbounded factor, including recently-developed coded computing strategies as well as traditional Algorithm-Based Fault Tolerance (ABFT) strategies. We also propose coded computing schemes for other primitives such as fast Fourier transform (FFT) and matrix QR factorization. Completing computation reliably and in time under diverse unpredictabilities (e.g., stragglers, node failures, bit flips) is becoming a more important problem. The amount of data we collect is growing exponentially and recent developments in ML have enabled utilizing and processing such large quantities of data. This has not only led to an increase in the scale of computing but also the wide popularity of largescale
computing across our society. I will discuss how masterless coded computing can be a more efficient fault-tolerance technique under growing unpredictability in computing systems, providing both theoretical and experimental evidence.
Aid, privatization, and development: Turkey, 1979-1990
Creators: name: Shaker, Sallama Mahmoud
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: The research is an analytical study of the ideological, political, and socio-economic aspects of the privatization process in a rent-seeking setting, which explains the problems facing political leaders in developing countries in making the transition from a planned to a market economy. The dissertation defines the terms aid, development, and privatization in a contextual manner to illustrate the difference between the donors' perceptions of these terms and that of the recipients, which explains the problems occurring between them. These contextual definitions become effective throughout the study that seeks to emphasize some of the macro-economic and sociological concerns that determine decision-making during and after crisis. The research extends the rent-seeking theory as studied by Anne O. Krueger and later developed by other political economists to analyze the negative-sum results of rent-seeking on the privatization process. The crucial questions that are addressed in the research is: Does privatization eliminate or lessen rent-seeking? Are governments rent-seekers or are they growth-maximizers and through effective use of aid can allocate the resources efficiently to achieve development? To answer these questions, the study analyzes the obstacles (political, social, economic, legal, and technical) facing the privatization process, during the initiation and implementation stages. The theoretical argument is substantiated with empirical evidence by studying extensively the Turkish experience from 1979-1990, the years which witnessed the radical changes in the structure of the economic policies from an inward, import-substituting industrialization to an outward orientation with emphasis on import-led growth strategy and free market. Turkey's efforts to privatize collided with a fifty year concept of a paternal state where the government created the state-owned enterprises as part of the social contract to achieve national production and serve the social goals. Drawing on the empirical case study, the dissertation argues that privatization is a political socio-economic process of change. The success of these economic policies is anchored in the ability of its key actors to promote the concept by building powerful coalitions of public support, politicians, bureaucrats and interest groups, while containing the rent-seeking phenomenon to enhance development and eliminate social and economic waste.
Granular contact force density of states and entropy in a modified Edwards ensemble
Creators: name: Metzger, Philip
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A method has been found to analyze Edwards' granular contact force probability functional for a special case. As a result, the granular contact force probability density functions are obtained from first principles for this case. The results are in excellent agreement with the experimental and simulation data. The derivation assumes Edwards' flat measure -- a density of states that is uniform within the metastable regions of phase space. The enabling assumption, supported by physical arguments and empirical evidence, is that correlating information is not significantly recursive through loops in the packing. Maximizing a state-counting entropy results in a transport equation that can be solved numerically. For the present this has been done using the "mean structure approximation," projecting the density of states across all angular coordinates to more clearly identify its predominant non-uniformities. These features are: (1) the grain factor (Psi) related to grain stability and strong correlation between the contact forces on the same grain, and (2) the structure factor (Upsilon) related to Newton's third law and strong correlation between neighboring grains.
description: 21 pages, 15 figures, to appear in Phys. Rev. E, substantial changes based on reviewer comments