cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New bounds on curve tangencies and orthogonalities
Creators: name: Ellenberg, Jordan S.
name: Solymosi, Jozsef
name: Zahl, Joshua
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We establish new bounds on the number of tangencies and orthogonal intersections determined by an arrangement of curves. First, given a set of $n$ algebraic plane curves, we show that there are $O(n^{3/2})$ points where two or more curves are tangent. In particular, if no three curves are mutually tangent at a common point, then there are $O(n^{3/2})$ curve-curve tangencies. Second, given a family of algebraic plane curves and a set of $n$ curves from this family, we show that either there are $O(n^{3/2})$ points where two or more curves are orthogonal, or the family of curves has certain special properties. We obtain these bounds by transforming the arrangement of plane curves into an arrangement of space curves so that tangency (or orthogonality) of the original plane curves corresponds to intersection of space curves. We then bound the number of intersections of the corresponding space curves. For the case of curve-curve tangency, we use a polynomial method technique that is reminiscent of Guth and Katz's proof of the joints theorem. For the case of orthogonal curve intersections, we employ a bound of Guth and the third author to control the number of two-rich points in space curve arrangements.
description: 22 pages, 1 figure. v4: final version; to appear in Discrete Analysis
The Job Skills Assessment Profile: An Assessment of Employment Ability in Adolescents with High-Functioning Autism Spectrum Disorder
Creators: name: Wu, Eleanor
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Achieving and maintaining employment is one of the largest obstacles that adults with
Autism Spectrum Disorder (ASD) face, as employment rates of individuals with ASD are lower
than any other group with a disability (Levy & Perry, 2011). Adolescents and adults with ASD
face difficulties with organization, social skills and emotion regulation, impeding job
performance. Recently, numerous interventions have been developed in attempt to address such
impairments with this population, yet professionals have no mechanism to assess these deficits
nor to evaluate the efficacy of such interventions. The Job Skills Assessment Profile (JSAP) is an
assessment battery designed to assess employment skills in the domains of social skills,
organization and emotion regulation in young adults with high-functioning ASD. The goal of the
JSAP is to assist in measuring the efficacy of vocational interventions and to evaluate an
individual’s strengths and weaknesses in these domains within an employment context. The
present paper provides a preliminary report of the assessment’s psychometric properties,
including test-retest reliability, congruent validity, internal consistency and sensitivity to
treatment effects. To conduct this study, 17 high school students with high-functioning ASD
were recruited and assessed at two time points over a ten-week period. The JSAP was
administered with participants and caregiver-report construct measures were collected before and
after the 10-week period. Analyses revealed that the instrument possessed inadequate test-retest
reliability, acceptable internal consistency, acceptable-adequate convergent validity and trends of
adequate sensitivity to treatment effects. Results are interpreted cautiously due to limitations, but
are taken into context for future measure development. Future directions of the instrument are
discussed.
A Robust Learning Methodology for Uncertainty-aware Scientific Machine Learning models
Creators: name: Almeida, Erbet Costa
name: Rebello, Carine de Menezes
name: Fontana, Marcio
name: Schnitman, Leizer
name: Nogueira, Idelfonso Bessa dos Reis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: J.2
subject: 68T07

description: Robust learning is an important issue in Scientific Machine Learning (SciML). There are several works in the literature addressing this topic. However, there is an increasing demand for methods that can simultaneously consider all the different uncertainty components involved in SciML model identification. Hence, this work proposes a comprehensive methodology for uncertainty evaluation of the SciML that also considers several possible sources of uncertainties involved in the identification process. The uncertainties considered in the proposed method are the absence of theory and causal models, the sensitiveness to data corruption or imperfection, and the computational effort. Therefore, it was possible to provide an overall strategy for the uncertainty-aware models in the SciML field. The methodology is validated through a case study, developing a Soft Sensor for a polymerization reactor. The results demonstrated that the identified Soft Sensor are robust for uncertainties, corroborating with the consistency of the proposed approach.
description: 23 pages
Abstract/Concrete Day 1
Creators: name: Dorfman, Anna
name: Kara-Yakoubian, Mane
name: Grossmann, Igor
name: Buehler, Roger
name: Peetz, Johanna
name: Rotella, Amanda
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: construal level theory
subject: Individual differences
subject: Personality
subject: Psychology
subject: FOS: Psychology
subject: Wisdom
subject: Wise reasoning

description: This is a 3-wave study examining participants' abstract and concrete thoughts about different real-life events. We use a new scale of abstract and concrete thinking. We examine the association between abstract thoughts, concrete thoughts, and wise reasoning.
Reinterpreting Romance: Middle English Romance and Approaches to Interpretation
Creators: name: Watts, Courtney
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Modern criticism tends to see romance as harmless and conservative, a way to
fictionally explore social issues before reasserting cultural norms. Romance creates a
fictional space, placed safely in the mythic past or foreign lands, in which taboos can be
flirted with and social tensions played out. The genre “opens up a space for transgression
or at least for renegotiating power” (Charbonneau 97). This space can be used to explore
a range of issues, including “an individual’s defiance of or conformity to familial, social,
cultural and political forces” (Charbonneau 96). Formulated a different way, “romance is,
of course, always preoccupied with desire, whether erotic, material, political, or more
rarely, spiritual” (McDonald, “Desire Out of Order and Undo Your Door,” 252). The
types of issues addressed in romance have profoundly personal implications, often
focusing on the place of the individual amidst societal forces. The protagonist of the
romance “comes into conflict with one or more incompatible desires,” and most often
these conflicting desires represent societal norms and deviations from the norm (253).
While romance can explore a variety of issues, it does so in a characteristic manner.
Competing values, whether social, political, or cultural, are not discussed but enacted,
their outcomes allowed to speak to the relative merits of each. Good kings are measured
against bad kings, and incestuous fathers act as unsuitable male relatives to their
daughters, juxtaposed with appropriate husbands.
Side-channel attack analysis on in-memory computing architectures
Creators: name: Wang, Ziyu
name: Meng, Fan-hsuan
name: Park, Yongmo
name: Eshraghian, Jason K.
name: Lu, Wei D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: In-memory computing (IMC) systems have great potential for accelerating data-intensive tasks such as deep neural networks (DNNs). As DNN models are generally highly proprietary, the neural network architectures become valuable targets for attacks. In IMC systems, since the whole model is mapped on chip and weight memory read can be restricted, the pre-mapped DNN model acts as a ``black box'' for users. However, the localized and stationary weight and data patterns may subject IMC systems to other attacks. In this paper, we propose a side-channel attack methodology on IMC architectures. We show that it is possible to extract model architectural information from power trace measurements without any prior knowledge of the neural network. We first developed a simulation framework that can emulate the dynamic power traces of the IMC macros. We then performed side-channel leakage analysis to reverse engineer model information such as the stored layer type, layer sequence, output channel/feature size and convolution kernel size from power traces of the IMC macros. Based on the extracted information, full networks can potentially be reconstructed without any knowledge of the neural network. Finally, we discuss potential countermeasures for building IMC systems that offer resistance to these model extraction attack.
Magneto-transport behaviour of Bi2Se3-xTex: Role of disorder
Creators: name: Amaladass, E. P.
name: Devidas, T. R.
name: Sharma, Shilpam
name: Sundar, C. S.
name: Bharathi, A.
name: Mani, Awadhesh
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetoresistance and Hall resistance measurements have been carried out in fastcooled single crystals of Bi2Se3-xTex (x: 0 to 2) in 4 to 300 K temperature range, under magnetic fields up to 15 T. The variation of resistivity with temperature that points to a metallic behaviour in Bi2Se3, shows an upturn at low temperatures in the Te doped samples. Magnetoresistance measurements in Bi2Se3 show clear signatures of Shubnikov de Hass oscillations that gets suppressed in the Te doped samples. In the Bi2SeTe2 sample, the magneto-resistance shows a cusp like positive magneto-resistance at low magnetic fields and low temperatures, a feature associated with weak antilocalisation (WAL), that crosses over to negative magneto-resistance at higher fields. The qualitatively different magnetotransport behaviour seen in Bi2SeTe2 as compared to Bi2Se3 is rationalised in terms of the disorder, through an estimate of the carrier density, carrier mobility and an analysis in terms of the Ioffe Regel criterion with support from Hall Effect measurements.
description: 12 pages, 6 figures
The generalization of Latin hypercube sampling
Creators: name: Shields, Michael D.
name: Zhang, Jiaxin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Latin hypercube sampling (LHS) is generalized in terms of a spectrum of stratified sampling (SS) designs referred to as partially stratified sample (PSS) designs. True SS and LHS are shown to represent the extremes of the PSS spectrum. The variance of PSS estimates is derived along with some asymptotic properties. PSS designs are shown to reduce variance associated with variable interactions, whereas LHS reduces variance associated with main effects. Challenges associated with the use of PSS designs and their limitations are discussed. To overcome these challenges, the PSS method is coupled with a new method called Latinized stratified sampling (LSS) that produces sample sets that are simultaneously SS and LHS. The LSS method is equivalent to an Orthogonal Array based LHS under certain conditions but is easier to obtain. Utilizing an LSS on the subspaces of a PSS provides a sampling strategy that reduces variance associated with both main effects and variable interactions and can be designed specially to minimize variance for a given problem. Several high-dimensional numerical examples highlight the strengths and limitations of the method. The Latinized partially stratified sampling method is then applied to identify the best sample strategy for uncertainty quantification on a plate buckling problem.
description: 31 pages, 9 figures
Identifying Novel Cytokinin Signaling Components by a Second-Site Modifier Mutation Screen in Arabidopsis thaliana
Creators: name: Chang, Nicole
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: The plant hormone cytokinin is involved in shoot and root elongation, leaf senescence, cell division, and other developmental and physiological processes. Cytokinin is part of a histidine-to-aspartic acid phosphorelay signaling system. It is the ligand for histidine kinase receptors that phosphorylate Arabidopsis histidine phosphotransfer proteins (AHPs), which in turn transfer the added phosphate group to response regulators. In order to identify novel components, such as phosphatases and cytokinin transporters, involved in cytokinin signaling, a second-site modifier mutation screen in a sensitized background (ahp2;ahp3 double mutant) is being conducted. Loss-of-function ahp2;ahp3 plants exhibit wild-type-level sensitivity to cytokinin in a root elongation assay. However, even minor alterations in cytokinin signaling can produce substantial phenotypic changes that would not otherwise be observable in a wild-type background, most notably a longer root length in the presence of exogenous cytokinin. The progeny of approximately 15,000 first generation mutant plants were assayed for altered response to cytokinin, and putative cytokinin signaling-mutant lines are currently being confirmed. Future work will include characterization and mapping of causative mutations in confirmed mutant lines. Identification of new components of cytokinin signaling can help improve crop yield in the future since genetic modification of cytokinin signaling increases maize and rice yield.
Characterizing and quantifying the incompatibility of quantum instruments
Creators: name: Mitra, Arindam
name: Farkas, Máté
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Incompatibility of quantum devices is one of the cornerstones of quantum theory, and the incompatibility of quantum measurements and channels has been linked to quantum advantage in certain information theoretic tasks. In this work, we focus on the less well-explored question of the incompatibility of quantum instruments, that is, devices that describe the measurement process in its entirety, accounting for both the classical measurement outcome and the quantum post-measurement state. In particular, we focus on the recently introduced notion of parallel compatibility of instruments, which has been argued to be a natural notion of instrument compatibility. We introduce -- similarly to the case of measurements and channels -- the incompatibility robustness of quantum instruments and derive universal bounds on it. We then prove that post-processing of quantum instruments is a free operation for parallel compatibility. Last, we provide families of instruments for which our bounds are tight, and families of compatible indecomposable instruments.
description: 10 pages, typos fixed, minor issues fixed
title: You'll Never Walk Alone: The Scales of Identity of Celtic Football Club Supporters
Creators: name: Conner, Neil
Publisher: name: Old Dominion University Libraries
Year: 2011

description: How and why a person chooses to support a specific sports team/club is more complex than one might imagine. Historically, this selection was primarily established based on a number of socially constructed identities associated with geographic location and the ideas of place and space. This formed a dynamic relationship between the team and the supporter that was relentlessly renegotiated. In today's globalized world, these multifaceted decisions take on additional intricacies as place and space become amplified by growing global cultural exchanges. This ethnographic study will examine how these recent transformations have affected how supporters of the Glasgow Celtic Football Club identify with their team at three geographic scales; the local, the regional and the global.
Vortex arrays in neutral trapped Fermi gases throughout the BCS-BEC crossover
Creators: name: Simonucci, S.
name: Pieri, P.
name: Strinati, G. C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Vortex arrays in type-II superconductors admit the translational symmetry of an infinite system. There are cases, however, like ultra-cold trapped Fermi gases and the crust of neutron stars, where finite-size effects make it quite more complex to account for the geometrical arrangement of vortices. Here, we self-consistently generate these arrays of vortices at zero and finite temperature through a microscopic description of the non-homogeneous superfluid based on a differential equation for the local order parameter, obtained by coarse graining the Bogoliubov-de Gennes (BdG) equations. In this way, the strength of the inter-particle interaction is varied along the BCS-BEC crossover, from largely overlapping Cooper pairs in the BCS limit to dilute composite bosons in the BEC limit. Detailed comparison with two landmark experiments on ultra-cold Fermi gases, aimed at revealing the presence of the superfluid phase, brings out several features that makes them relevant for other systems in nature as well.
description: Final author version
An Evaluation of a Well-Baby Educational Program for Spanish-Speaking Patients at UNC Health Care
Creators: name: Ozgun, Holly
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Background: Spanish-speaking mothers have identified Spanish communication as key to receiving patient-centered care. A disparity exists between the amount of maternal health education that Latina mothers would like to receive and the amount that they do receive. Program description: Ready, Set, Baby (RSB) is “an educational program designed to counsel prenatal women about maternity care best practices and the benefits and management of breastfeeding.” The Women’s Health Information Center (WHIC) at the North Carolina Women’s Hospital established a pilot program to provide RSB education to Spanish-speaking mothers using volunteer educators. Evaluation questions: What are the processes for recruiting, training, and managing volunteers, and conducting RSB sessions? What are stakeholder perceptions of these processes? Overall, how can the program improve? Methods: Semi-structured key informant interviews.Findings: Current processes for recruitment, training, management, and RSB sessions were modeled. Stakeholders identified positive aspects, such as flexibility and leveraging organizational strengths. Stakeholders identified negative aspects, including unclear ownership of processes, lack of communication, redundancies, and inconsistencies. Stakeholders also made recommendations for process improvements. Implications: Updated processes that reflected stakeholders’ recommendations were developed and will be implemented. Other collaborative programs should ensure clear division of responsibilities, eliminate redundancies between organizations, and leverage each organization’s strengths to facilitate effective collaboration. Other volunteer-based language-access programs should create processes that are flexible to meet the differing needs of native- and non-native speaker volunteers, mandate standardized proof of language proficiency, and investigate the care-seeking patterns of their target population.
Heavy quark potential from QCD-related effective coupling
Creators: name: Ayala, Cesar
name: Gonzalez, Pedro
name: Vento, Vicente
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We implement our past investigations in the quark-antiquark interaction through a non-perturbative running coupling defined in terms of a gluon mass function, similar to that used in some Schwinger-Dyson approaches. This coupling leads to a quark-antiquark potential, which satisfies not only asymptotic freedom but also describes linear confinement correctly. From this potential, we calculate the bottomonium and charmonium spectra below the first open flavor meson-meson thresholds and show that for a small range of values of the free parameter determining the gluon mass function an excellent agreement with data is attained.
description: 13 pages, 4 figures; v3: version accepted for publication in Journal of Physics G
Female Genital Cutting: A Maternity Nurse's Guide to Providing Culturally Competent Care
Creators: name: Wainwright, Carra Lee
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: As a result of immigration trends, maternity nurses in the United States are likely to encounter
women who have undergone female genital cutting. There is a lack of knowledge and awareness
about female genital cutting among nurses. Chalmers and Hashi (2000) found that women who
had undergone female genital cutting at a younger age and gave birth in Canadian hospitals
perceived their nurses to be insensitive to their needs. In addition, one study of the birth
experiences of Somali immigrant women found that healthcare providers in the United States
rarely discussed female genital cutting or how it could affect the women’s birth experiences
(Ameresekere, Borg, Frederick, Vragovic, Saia, & Raj, 2011). An extensive literature search was
performed utilizing CINAHL, PubMed, and Google Scholar. The objectives of this literature
review are to inform maternity nurses of the following: 1) the prevalence of female genital
cutting and regions where it is commonly practiced, 2) the reasons why female genital cutting is
practiced, 3) the complications of female genital cutting, and 4) the nursing care needs of women
who have undergone female genital cutting. This review of literature elucidates that: female
genital cutting rates are high in Africa and the Middle East, maternity nurses in United States
hospitals will increasingly care for women who have undergone female genital cutting, there are
serious complications related to female genital cutting, and there is a need for culturally
competent maternity nurses to care for women who have undergone female genital cutting
RSCM Technology for Developing Runtime-Reconfigurable Telecommunication Applications
Creators: name: Ghiasi-Shirazi, Sayed Kamaledin
name: Mohseni, Mahdi
name: Darvishan, Majid
name: Yousefzadeh, Reza
Publisher: name: arXiv
Year: 2015
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Runtime reconfiguration is a fundamental requirement of many telecommunication applications which also has been addressed by management standards like CMIP, 3GPP TS 32.602, and NETCONF. Two basic commands considered by these standards are CREATE and DELETE which operate on managed objects inside an application. The available configuration management technologies, like JMX, OSGi, and Fractal, do not support the CREATE and DELETE reconfiguration commands of the telecommunication standards. In this paper, we introduce a novel technology, called RSCM, for development of runtime reconfigurable applications complying with the telecommunication standards. The RSCM subagent takes the responsibility of loading the application from the configuration file, executing the runtime reconfiguration commands (including CREATE and DELETE), enforcing validity of the configuration state, and updating the configuration file according to the latest reconfiguration commands. We exploit the modular and object oriented features of the XML technology for storing the configuration state of a program in a configuration file. The software development process is tailored such that the design of XML schemas of managed classes is performed parallel to the design of software classes. In addition, a novel programming approach based on indirect referencing is proposed which allows safe and almost immediate deletion of managed objects at runtime. This indirect referencing mechanism affects the implementation of associations in class diagrams and prevents methods of a class to use the this pointer freely. The RSCM technology has been successfully used in several commercial telecommunication applications; including an SMS service center, an SMS gateway, and an SMS hub.
Random Sequential Covering
Creators: name: Krapivsky, P. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In random sequential covering, identical objects are deposited randomly, irreversibly, and sequentially; only attempts increasing the coverage are accepted. A finite system eventually gets congested, and we study the statistics of congested configurations. For the covering of an interval by dimers, we determine the average number of deposited dimers, compute all higher cumulants, and establish the probabilities of reaching minimally and maximally congested configurations. We also investigate random covering by segments with $\ell$ sites and sticks. Covering an infinite substrate continues indefinitely, and we analyze the dynamics of random sequential covering of $\mathbb{Z}$ and $\mathbb{R}^d$.
description: 16 pages, 8 figures; v3: minor additions and corrections, added references
Mental health project during the COVID-19 epidemic period
Creators: name: Fuchao
Publisher: name: Open Science Framework
Year: 2022

description: This is an open-ended project. We aim to investigate the social-psychological factors that may affect people during the COVID-19 epidemic period. By a two-wave longitudinal design, we plan to recruit Chinese participants from the internet and collect following data. 1. Wake Forest Physician Trust Scale 2. Physician-patient Trust Scale 3. DOSPERT scale 4. Faking news scale 5. Public confidence scale for outbreaks 6. Public perceived control for outbreaks 7. Trust to family, neighbors, strangers, doctors, governments, etc. 8. Consumer confidence index during the outbreak 9. Ability and warmth scale 10. One-shot trust game and one-shot Chicken game The results will contribute to public health and epidemiological research.
Making Space and Women's Activism in the Arab World
Creators: name: Breathwaite, Marisa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: This thesis explores how women in the Arab World have made space for social and political activism in the years leading up to, during and after the Arab Spring. By assessing the varyingmethodologies women in the Arab World use occupy different spatial realms, I assert that despite Western media portrayal of Arab women as non-actors or recent participants in sociopoliticalactivism they consistently take part in dynamic activism in order to fully experience citizenship and progress in the processes of empowerment. This thesis covers three distinct spatial realms: streets, public gathering places and curated, women-only spaces. I detail women’s activism initiatives from each spatial realm, with examples coming from the Arab countries Egypt, Jordan, Lebanon, Saudi Arabia, and Palestine. The examples come from news outlets, interviews and academic analyses via journals and other collaborative projects. I engage the examples with scholarship on western imagination of Arab women, patriarchal structures and feminist geography. In analyzing the significance of space in how Arab women engage in sociopolitical activism, I argue that Western conceptualizations of activism often exclude Arab women’s activities and that activism does not yield a penultimate status of “empowerment”, but continuous progression and pushback.
Coherent optical-microwave interface for manipulation of low-field electronic clock transitions in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$
Creators: name: Nicolas, Louis
name: Businger, Moritz
name: Meijia, Théo Sanchez
name: Tiranov, Alexey
name: Chanelière, Thierry
name: Lafitte-Houssat, Eloïse
name: Ferrier, Alban
name: Goldner, Philippe
name: Afzelius, Mikael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The coherent interaction of solid-state spins with both optical and microwave fields provides a platform for a range of quantum technologies, such as quantum sensing, microwave-to-optical quantum transduction and optical quantum memories. Rare-earth ions with electronic spins are interesting in this context, but it is challenging to simultaneously and efficiently drive both optical and microwave transitions over a long crystal. In this work, we use a loop-gap microwave resonator to coherently drive optical and microwave clock transitions in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$, at close to zero external magnetic field. The low magnetic field regime is particularly interesting for interfacing these spin transitions with superconducting circuits. We achieve a Rabi frequency of 0.56 MHz at 2.497 GHz, over a 1-cm long crystal. Furthermore, we provide new insights into the spin dephasing mechanism at very low fields, showing that superhyperfine-induced collapse of the Hahn echo signal plays an important role at low fields. Our calculations and measurements reveal that the effective magnetic moment can be manipulated in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$, allowing to suppress the superhyperfine interaction at the clock transition. At a doping concentration of 2 ppm and a temperature of $3.4$ K, we achieve the longest spin coherence time of $10.0 \pm 0.4 ~\text{ms}$ reported in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$.
description: 8 pages, 4 figures, SI in ancillary files
Covariance Analysis of Symmetry Energy Observables from Heavy Ion Collision
Creators: name: Zhang, Yingxun
name: Tsang, M. B.
name: Li, Zhuxia
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using covariance analysis, we quantify the correlations between the interaction parameters in a transport model and the observables commonly used to extract information of the Equation of State of Asymmetric Nuclear Matter in experiments. By simulating $^{124}$Sn+$^{124}$Sn, $^{124}$Sn+$^{112}$Sn and $^{112}$Sn+$^{112}$Sn reactions at beam energies of 50 and 120 MeV per nucleon, we have identified that the nucleon effective mass splitting are most strongly correlated to the neutrons and protons yield ratios with high kinetic energy from central collisions especially at high incident energy. The best observable to determine the slope of the symmetry energy, L, at saturation density is the isospin diffusion observable even though the correlation is not very strong ($\sim$0.7). Similar magnitude of correlation but opposite in sign exists for isospin diffusion and nucleon isoscalar effective mass. At 120 MeV/u, the effective mass splitting and the isoscalar effective mass also have opposite correlation for the double n/p and isoscaling p/p yield ratios. By combining data and simulations at different beam energies, it should be possible to place constraints on the slope of symmetry energy (L) and effective mass splitting with reasonable uncertainties.
description: 13 pages, 1 figure
100 Gbps Integrated Quantum Random Number Generator Based on Vacuum Fluctuations
Creators: name: Bruynsteen, Cedric
name: Gehring, Tobias
name: Lupo, Cosmo
name: Bauwelinck, Johan
name: Yin, Xin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Emerging communication and cryptography applications call for reliable, fast, unpredictable random number generators. Quantum random number generation (QRNG) allows for the creation of truly unpredictable numbers thanks to the inherent randomness available in quantum mechanics. A popular approach is using the quantum vacuum state to generate random numbers. While convenient, this approach was generally limited in speed compared to other schemes. Here, through custom co-design of opto-electronic integrated circuits and side-information reduction by digital filtering, we experimentally demonstrated an ultrafast generation rate of 100 Gbps, setting a new record for vacuum-based quantum random number generation by one order of magnitude. Furthermore, our experimental demonstrations are well supported by an upgraded device-dependent framework that is secure against both classical and quantum side-information and that also properly considers the non-linearity in the digitization process. This ultrafast secure random number generator in the chip-scale platform holds promise for next generation communication and cryptography applications.
Multifamily Historic Renovation: Developer Risks, Challenges, and Benefits
Creators: name: Olson, Sean C.H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Multifamily historic renovations are popular with local communities, because they help preserve a town’s history, revitalize disinvested areas, and provide a unique experience for tenants. Yet, despite these benefits and the availability of tax incentives, many developers refrain from undertaking historic renovation projects because of the many risks involved. This paper will identify and address some of these systematic risks through a series of interviews with real estate developers and professionals as well as a case study featuring a multifamily historic renovation. This methodology will identify some of the significant costs, lengthy development tasks, challenges of using historic tax credits, and the benefits of developing historic renovations. The goal of this thesis is to identify the challenges and potential benefits of historic renovations that differ from new construction projects and make recommendations to developers and public policy makers.
Personality Change and Sustainability Attitudes and Behaviors in NZAVS
Creators: name: Hopwood, Christopher
name: Bleidorn, Wiebke
name: Schwaba, Ted
name: Sibley, Chris
name: Milfont, Taciano
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Personality and Social Contexts
subject: Public Affairs, Public Policy and Public Administration
subject: Environmental Studies
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: environment
subject: personality change
subject: personality traits
subject: sustainability

description: The goal of this study is to examine longitudinal association of personality trait change and sustainability attitudes and behaviors.
On planet formation in HL Tau
Creators: name: Dipierro, Giovanni
name: Price, Daniel
name: Laibe, Guillaume
name: Hirsh, Kieran
name: Cerioli, Alice
name: Lodato, Giuseppe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We explain the axisymmetric gaps seen in recent long-baseline observations of the HL Tau protoplanetary disc with the Atacama Large Millimetre/Submillimetre Array (ALMA) as being due to the different response of gas and dust to embedded planets in protoplanetary discs. We perform global, three dimensional dusty smoothed particle hydrodynamics calculations of multiple planets embedded in dust/gas discs which successfully reproduce most of the structures seen in the ALMA image. We find a best match to the observations using three embedded planets with masses of 0.2, 0.27 and 0.55 $M_{\rm J}$ in the three main gaps observed by ALMA, though there remain uncertainties in the exact planet masses from the disc model.
description: 5 pages, 4 figures. Accepted for publication in MNRAS Letters. The movie of the simulation is available at https://www.youtube.com/watch?v=CKenxfslBMY and https://www.youtube.com/watch?v=mGCfjrb5bTQ
Halevi's extension of the Euler-Drude model for plasmonic systems
Creators: name: Wegner, Gino
name: Huynh, Dan-Nha
name: Mortensen, N. Asger
name: Intravaia, Francesco
name: Busch, Kurt
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The nonlocal response of plasmonic materials and nanostructures is usually described within a hydrodynamic approach which is based on the Euler-Drude equation. In this work, we reconsider this approach within linear response theory and employ Halevi's extension to this standard hydrodynamic model. After discussing the impact of this improved model, which we term the Halevi model, on the propagation of longitudinal volume modes, we accordingly extend the Mie-Ruppin theory. Specifically, we derive the dispersion relation of cylindrical surface plasmons. This reveals a nonlocal, collisional damping term which is related to earlier phenomenological considerations of limited-mean-free-path effects and influences both, peak width and amplitude of corresponding resonances in the extinction spectrum. In addition, we transfer the Halevi model into the time-domain thereby revealing a novel, diffusive contribution to the current which shares certain similarities with Cattaneo-type currents and analyze the resulting hybrid, diffusive-wave-like motion. Further, we discuss the relation of the Halevi model to other approaches commonly used in the literature. Finally, we demonstrate how to implement the Halevi model into the Discontinuous-Galerkin Time-Domain finite-element Maxwell solver and are able to identify an oscillatory contribution to the diffusive current. The Halevi model thus captures a number of relevant features beyond the standard hydrodynamic model. Contrary to other extensions of the standard hydrodynamic model, its use in time-domain Maxwell solvers is straightforward -- especially due its affinity to a class of descriptions that allow for a clear distinction between bulk and surface response. This is of particular importance for applications in nano-plasmonics where nano-gap structures and other nano-scale features have to be modeled efficiently and accurately.
description: 20 pages, 7 figures, 1 tables
Burst-and-coast properties and cost of transport as a function of the imposed swimming speed
Creators: name: Godoy-Diana, Ramiro
name: Thiria, Benjamin
name: Gen Li
name: Lechenault, Frederic
name: François, Bill
name: Kolomenskiy, Dmitry
name: Ashraf, Intesaaf
Publisher: name: Open Science Framework
Year: 2022

description: Data and script to produce Figure 2 from the paper Li et al. Comms. Biology (2020)
Learning the black hole metric from holographic conductivity
Creators: name: Li, Kai
name: Ling, Yi
name: Liu, Peng
name: Wu, Meng-He
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a neural network to learn the RN-AdS black hole metric based on the data of optical conductivity by holography. The linear perturbative equation for the Maxwell field is rewritten in terms of the optical conductivity such that the neural network is constructed based on the discretization of this differential equation. In contrast to all previous models in AdS/DL (deep learning) duality, the derivative of the metric function appears in the equation of motion and we propose distinct finite difference methods to discretize this function. The notion of the reduced conductivity is also proposed to avoid the divergence of the optical conductivity near the horizon.The dependence of the training outcomes on the location of the cutoff, the temperature as well as the frequency range is investigated in detail. This work provides a concrete example for the reconstruction of the bulk geometry with the given data on the boundary by deep learning.
Interventions influencing the dietary consumption of animal-based products: An overview of reviews
Creators: name: Grundy, Emily
name: Slattery, Peter
name: Saeri, Alexander
name: Noetel, Michael
Publisher: name: Open Science Framework
Year: 2022

description: Review question(s) 1) What interventions influence the dietary consumption of animal-based products? 1a) What does the combined information from all systematic reviews indicate? 1b) How well do current systematic reviews use best-practice approaches? 1c) What gaps exist in the review-level literature?
Sampling-Based Trajectory (re)planning for Differentially Flat Systems: Application to a 3D Gantry Crane
Creators: name: Vu, Minh Nhat
name: Schwegel, Michael
name: Hartl-Nesic, Christian
name: Kugi, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a sampling-based trajectory planning algorithm for a laboratory-scale 3D gantry crane in an environment with static obstacles and subject to bounds on the velocity and acceleration of the gantry crane system is presented. The focus is on developing a fast motion planning algorithm for differentially flat systems, where intermediate results can be stored and reused for further tasks, such as replanning. The proposed approach is based on the informed optimal rapidly exploring random tree algorithm (informed RRT*), which is utilized to build trajectory trees that are reused for replanning when the start and/or target states change. In contrast to state-of-the-art approaches, the proposed motion planning algorithm incorporates a linear quadratic minimum time (LQTM) local planner. Thus, dynamic properties such as time optimality and the smoothness of the trajectory are directly considered in the proposed algorithm. Moreover, by integrating the branch-and-bound method to perform the pruning process on the trajectory tree, the proposed algorithm can eliminate points in the tree that do not contribute to finding better solutions. This helps to curb memory consumption and reduce the computational complexity during motion (re)planning. Simulation results for a validated mathematical model of a 3D gantry crane show the feasibility of the proposed approach.
description: Published at IFAC-PapersOnLine (13th IFAC Symposium on Robot Control)
Observation of room temperature excitons in an atomically thin topological insulator
Creators: name: Syperek, Marcin
name: Stühler, Raul
name: Consiglio, Armando
name: Holewa, Paweł
name: Wyborski, Paweł
name: Dusanowski, Łukasz
name: Reis, Felix
name: Höfling, Sven
name: Thomale, Ronny
name: Hanke, Werner
name: Claessen, Ralph
name: Di Sante, Domenico
name: Schneider, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Optical spectroscopy of ultimately thin materials has significantly enhanced our understanding of collective excitations in low-dimensional semiconductors. This is particularly reflected by the rich physics of excitons in atomically thin crystals which uniquely arises from the interplay of strong Coulomb correlation, spin-orbit coupling (SOC), and lattice geometry. Here we extend the field by reporting the observation of room temperature excitons in a material of non-trivial global topology. We study the fundamental optical excitation spectrum of a single layer of bismuth atoms epitaxially grown on a SiC substrate (hereafter bismuthene or Bi/SiC) which has been established as a large-gap, two-dimensional (2D) quantum spin Hall (QSH) insulator. Strongly developed optical resonances are observed to emerge around the direct gap at the K and K' points of the Brillouin zone, indicating the formation of bound excitons with considerable oscillator strength. These experimental findings are corroborated, concerning both the character of the excitonic resonances as well as their energy scale, by ab-initio \emph{GW} and Bethe-Salpeter equation calculations, confirming strong Coulomb interaction effects in these optical excitations. Our observations provide the first evidence of excitons in a 2D QSH insulator at room temperature, with excitonic and topological physics deriving from the very same electronic structure.
Risk-aware linear bandits with convex loss
Creators: name: Saux, Patrick
name: Maillard, Odalric-Ambrym
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In decision-making problems such as the multi-armed bandit, an agent learns sequentially by optimizing a certain feedback. While the mean reward criterion has been extensively studied, other measures that reflect an aversion to adverse outcomes, such as mean-variance or conditional value-at-risk (CVaR), can be of interest for critical applications (healthcare, agriculture). Algorithms have been proposed for such risk-aware measures under bandit feedback without contextual information. In this work, we study contextual bandits where such risk measures can be elicited as linear functions of the contexts through the minimization of a convex loss. A typical example that fits within this framework is the expectile measure, which is obtained as the solution of an asymmetric least-square problem. Using the method of mixtures for supermartingales, we derive confidence sequences for the estimation of such risk measures. We then propose an optimistic UCB algorithm to learn optimal risk-aware actions, with regret guarantees similar to those of generalized linear bandits. This approach requires solving a convex problem at each round of the algorithm, which we can relax by allowing only approximated solution obtained by online gradient descent, at the cost of slightly higher regret. We conclude by evaluating the resulting algorithms on numerical experiments.
A dedicated greedy pursuit algorithm for sparse spectral representation of music sound
Creators: name: Rebollo-Neira, Laura
name: Aggarwal, Gagan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Sound (cs.SD)
subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences

description: A dedicated algorithm for sparse spectral representation of music sound is presented. The goal is to enable the representation of a piece of music signal, as a linear superposition of as few spectral components as possible. A representation of this nature is said to be sparse. In the present context sparsity is accomplished by greedy selection of the spectral components, from an overcomplete set called a dictionary. The proposed algorithm is tailored to be applied with trigonometric dictionaries. Its distinctive feature being that it avoids the need for the actual construction of the whole dictionary, by implementing the required operations via the Fast Fourier Transform. The achieved sparsity is theoretically equivalent to that rendered by the Orthogonal Matching Pursuit method. The contribution of the proposed dedicated implementation is to extend the applicability of the standard Orthogonal Matching Pursuit algorithm, by reducing its storage and computational demands. The suitability of the approach for producing sparse spectral models is illustrated by comparison with the traditional method, in the line of the Short Time Fourier Transform, involving only the corresponding orthonormal trigonometric basis.
description: Routines for implementing the approach are available on http://www.nonlinear-approx.info/examples/node02.html