cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Search for Gas-Rich Dwarf Galaxies in the Local Universe with ALFALFA and the WIYN One Degree Imager
Creators: name: Rhode, Katherine L.
name: Smith, Nicholas J.
name: Janesh, William F.
name: Salzer, John J.
name: Adams, Elizabeth A. K.
name: Haynes, Martha P.
name: Janowiecki, Steven
name: Cannon, John M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen survey. The ALFALFA UCHVCs are isolated, compact HI clouds with projected sizes, velocities, and estimated HI masses that suggest they may be nearby dwarf galaxies, but that have no clear counterpart in existing optical survey data. We observed 26 UCHVCs with the WIYN 3.5-m telescope and One Degree Imager (ODI) in two broadband filters and searched the images for resolved stars with properties that match those of stars in typical dwarf galaxies at distances <2.5 Mpc. We identify one promising dwarf galaxy candidate at a distance of ~570 kpc associated with the UCHVC AGC 268071, and five other candidates that may deserve additional follow-up. We carry out a detailed analysis of ODI imaging of a UCHVC that is close in both projected distance and radial velocity to the outer-halo Milky Way globular cluster Pal 3. We also use our improved detection methods to reanalyze images of five UCHVCs that were found to have possible optical counterparts during the first phase of the project, and confirm the detection of a possible stellar counterpart to the UCHVC AGC 249525 at an estimated distance of ~2 Mpc. We compare the optical and HI properties of the dwarf galaxy candidates to the results from recent theoretical simulations that model satellite galaxy populations in group environments, as well as to the observed properties of galaxies in and around the Local Group.
description: 33 pages, 10 figures, 5 tables. Published in the September 2023 issue of The Astronomical Journal
Partial Dynamical Symmetry in Odd-Mass Nuclei
Creators: name: Leviatan, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spectral features of the odd-mass nucleus $^{195}$Pt are analyzed by means of an interacting boson-fermion Hamiltonian with SO(6) partial dynamical symmetry. For the latter, selected eigenstates are solvable and preserve the symmetry exactly, while other states are mixed. The analysis constitutes a first example of this novel symmetry construction in a mixed Bose-Fermi system.
description: 10 pages, 2 figures, Proc. Int. Workshop "Shapes and Dynamics of Atomic Nuclei: Contemporary Aspects" (SDANCA-15), October 8-10, 2015, Sofia, Bulgaria
Breaking inversion symmetry in a state-dependent honeycomb lattice: Artificial graphene with tunable band gap
Creators: name: Weinberg, Malte
name: Staarmann, Christina
name: Ölschläger, Christoph
name: Simonet, Juliette
name: Sengstock, Klaus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Here, we present the application of a novel method for controlling the geometry of a state-dependent honeycomb lattice: The energy offset between the two sublattices of the honeycomb structure can be adjusted by rotating the atomic quantization axis. This enables us to continuously tune between a homogeneous graphene-like honeycomb lattice and a triangular lattice and to open an energy gap at the characteristic Dirac points. We probe the symmetry of the lattice with microwave spectroscopy techniques and investigate the behavior of atoms excited to the second energy band. We find a striking influence of the energy gap at the Dirac cones onto the lifetimes of atoms in the excited band.
ManyBabies 1 Bilingual: Final analysis repository
Creators: name: Byers-Heinlein, Krista
name: Soderstrom, Melanie
name: Tsui, Angeline
name: Fennell, Christopher
name: Frank, Michael
name: Singh, Leher
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Developmental Psychology
subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Registration of analysis scripts and data at the time of publication.
Enhancements in statistical spoken language translation by de-normalization of ASR results
Creators: name: Wołk, Agnieszka
name: Wołk, Krzysztof
name: Marasek, Krzysztof
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Spoken language translation (SLT) has become very important in an increasingly globalized world. Machine translation (MT) for automatic speech recognition (ASR) systems is a major challenge of great interest. This research investigates that automatic sentence segmentation of speech that is important for enriching speech recognition output and for aiding downstream language processing. This article focuses on the automatic sentence segmentation of speech and improving MT results. We explore the problem of identifying sentence boundaries in the transcriptions produced by automatic speech recognition systems in the Polish language. We also experiment with reverse normalization of the recognized speech samples.
description: International Academy Publishing. arXiv admin note: text overlap with arXiv:1510.04500
Droplet impact on a thin liquid film: anatomy of the splash
Creators: name: Josserand, Christophe
name: Ray, Pascal
name: Zaleski, Stéphane
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the dynamics of drop impact on a thin liquid film at short times in order to identify the mechanisms of splashing formation. Using numerical simulations and scaling analysis, we show that the splashing formation depends both on the inertial dynamics of the liquid and the cushioning of the gas. Two asymptotic regimes are identified, characterized by a new dimensionless number $J$: when the gas cushioning is weak, the jet is formed after a sequence of bubbles are entrapped and the jet speed is mostly selected by the Reynolds number of the impact. On the other hand, when the air cushioning is important, the lubrication of the gas beneath the drop and the liquid film controls the dynamics, leading to a single bubble entrapment and a weaker jet velocity.
Planners and Politics: Reflections on Twenty-seven Years (Commentary)
Creators: name: Howes, Jonathan B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: This is a time of great transition for our country. It is a time of great transition for Chapel Hill and for the region of which we are a part. And it is a time of great transition for the University. First, I will discuss the similarities in national politics between 1961, when I graduated from the Department of City and Regional Planning, and the present. In 1961, a young president had just succeeded a popular two-term incumbent. In 1988, we must decide upon a successor to a popular two-term incumbent.
Additional file 6 of Real-time identification of epistatic interactions in SARS-CoV-2 from large genome collections
Creators: name: Innocenti, Gabriel
name: Obara, Maureen
name: Costa, Bibiana
name: Jacobsen, Henning
name: Katzmarzyk, Maeva
name: Cicin-Sain, Luka
name: Kalinke, Ulrich
name: Galardini, Marco
Publisher: name: figshare
Year: 2024
Subjects: subject: Biophysics
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 6. Supplementary figures S1-11.
Absolute magnitudes and phase coefficients of trans-Neptunian objects
Creators: name: Alvarez-Candal, A.
name: Pinilla-Alonso, N.
name: Ortiz, J. L.
name: Duffard, R.
name: Morales, N.
name: Santos-Sanz, P.
name: Thirouin, A.
name: Silva, J. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: Accurate measurements of diameters of trans-Neptunian objects are extremely complicated to obtain. Thermal modeling can provide good results, but accurate absolute magnitudes are needed to constrain the thermal models and derive diameters and geometric albedos. The absolute magnitude, Hv, is defined as the magnitude of the object reduced to unit helio- and geocentric distances and a zero solar phase angle and is determined using phase curves. Phase coefficients can also be obtained from phase curves. These are related to surface properties, yet not many are known. Aims: Our objective is to measure accurate V band absolute magnitudes and phase coefficients for a sample of trans-Neptunian objects, many of which have been observed, and modeled, within the 'TNOs are cool' program, one of Herschel Space Observatory key projects. Methods: We observed 56 objects using the V and R filters. These data, along with those available in the literature, were used to obtain phase curves and measure V band absolute magnitudes and phase coefficients by assuming a linear trend of the phase curves and considering magnitude variability due to rotational light-curve. Results: We obtained 237 new magnitudes for the 56 objects, six of them with no reported previous measurements. Including the data from the literature we report a total of 110 absolute magnitudes with their respective phase coefficients. The average value of Hv is 6.39, bracketed by a minimum of 14.60 and a maximum of -1.12. In the case of the phase coefficients we report 0.10 mag per degree as the median value and a very large dispersion, ranging from -0.88 up tp 1.35 mag per degree.
description: 35 pages, 3 long tables, 11 figures. Phase curves for 110 objects, figures available upon request. A&A accepted
Book Review: Triumph of the City
Creators: name: Cvelich, Peter
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Beneath the electric haze of the big city lights, another more organic energy illuminates the streets and towers of the world’s greatest urban settlements—human ingenuity. Human ingenuity gave rise to the city and human ingenuity continues to radiate through the dense networks of collaboration that growing cities conduct like flashing synapses. In Triumph of the City, Edward Glaeser extols a vision of the metropolis as the nerve center of society and the engine of growth. Chapter by chapter, he presents the numerous ways in which urban living has lifted mankind to new heights and how our cities must be stimulated if we expect prosperity to increase and spread to the poorest parts of the globe. Planners seeking to grasp the trends and theories influencing the direction of urban growth ought to avail themselves of this widely-acclaimed treatise— which is part history, part economics, and part sociology.
Effective Dirac Hamiltonian for anisotropic honeycomb lattices: optical properties
Creators: name: Oliva-Leyva, M.
name: Naumis, Gerardo G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive the low-energy Hamiltonian for a honeycomb lattice with anisotropy in the hopping parameters. Taking the reported Dirac Hamiltonian for the anisotropic honeycomb lattice, we obtain its optical conductivity tensor and its transmittance for normal incidence of linearly polarized light. Also, we characterize its dichroic character due to the anisotropic optical absorption. As an application of our general findings, which reproduce the case of uniformly strained graphene, we study the optical properties of graphene under a nonmechanical distortion.
Eigenmodes of three-dimensional magnetic arcades in the Sun's corona
Creators: name: Hindman, Bradley W.
name: Jain, Rekha
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We develop a model of coronal-loop oscillations that treats the observed bright loops as an integral part of a larger 3-D magnetic structure comprised of the entire magnetic arcade. We demonstrate that magnetic arcades within the solar corona can trap MHD fast waves in a 3-D waveguide. This is accomplished through the construction of a cylindrically symmetric model of a magnetic arcade with a potential magnetic field. For a magnetically dominated plasma, we derive a governing equation for MHD fast waves and from this equation we show that the magnetic arcade forms a 3-D waveguide if the Alfvén speed increases monotonically beyond a fiducial radius. Both magnetic pressure and tension act as restoring forces, instead of just tension as is generally assumed in 1-D models. Since magnetic pressure plays an important role, the eigenmodes involve propagation both parallel and transverse to the magnetic field. Using an analytic solution, we derive the specific eigenfrequencies and eigenfunctions for an arcade possessing a discontinuous density profile. The discontinuity separates a diffuse cylindrical cavity and an overlying shell of denser plasma that corresponds to the bright loops. We emphasize that all of the eigenfunctions have a discontinuous axial velocity at the density interface; hence, the interface can give rise to the Kelvin-Helmholtz instability. Further, we find that all modes have elliptical polarization with the degree of polarization changing with height. However, depending on the line of sight, only one polarization may be clearly visible.
description: 24 pages, 6 figures, 1 ancillary animation file
IRtreesInORM
Creators: name: Plieninger, Hansjörg
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Industrial and Organizational Psychology
subject: Quantitative Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: irt
subject: psychometrics
subject: response styles

description: Research Compendium of a Manuscript on Item Response Tree Models
EALink: An Efficient and Accurate Pre-trained Framework for Issue-Commit Link Recovery
Creators: name: Zhang, Chenyuan
name: Wang, Yanlin
name: Wei, Zhao
name: Xu, Yong
name: Wang, Juhong
name: Li, Hui
name: Ji, Rongrong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Issue-commit links, as a type of software traceability links, play a vital role in various software development and maintenance tasks. However, they are typically deficient, as developers often forget or fail to create tags when making commits. Existing studies have deployed deep learning techniques, including pretrained models, to improve automatic issue-commit link recovery.Despite their promising performance, we argue that previous approaches have four main problems, hindering them from recovering links in large software projects. To overcome these problems, we propose an efficient and accurate pre-trained framework called EALink for issue-commit link recovery. EALink requires much fewer model parameters than existing pre-trained methods, bringing efficient training and recovery. Moreover, we design various techniques to improve the recovery accuracy of EALink. We construct a large-scale dataset and conduct extensive experiments to demonstrate the power of EALink. Results show that EALink outperforms the state-of-the-art methods by a large margin (15.23%-408.65%) on various evaluation metrics. Meanwhile, its training and inference overhead is orders of magnitude lower than existing methods.
description: 13 pages, 6 figures, published to ASE
Heavy quarks in proton-nucleus collisions - the hybrid formalism
Creators: name: Altinoluk, Tolga
name: Armesto, Néstor
name: Beuf, Guillaume
name: Kovner, Alex
name: Lublinsky, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the quark mass effects on inclusive hadron production in proton-nucleus collisions at high energies. We consider two processes. First, we compute the single inclusive cross-section for production of hadrons with open heavy flavour in the proton forward direction at leading order. Next, in the same kinematics, we calculate the heavy-quark contribution to single inclusive production of light or unidentified hadrons at next-to-leading-order. For both studies we exploit the hybrid formalism, that is the collinear factorisation on the proton side while high-density and high-energy effects are resummed on the side of the nucleus.
description: 34 pages, 3 figures
Is There an Alternative to the Nursing Home for North Carolina's Elderly?
Creators: name: Cooper, Lynne Eickholt
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1976

description: The majority of North Carolinians can look forward to a long life, unthreatened by major epidemics of communicable disease and malnutrition. But even though most of us will reach the age of 65, it is likely we will be frustrated with one or more chronic conditions that will restrict the pleasures of normal activity. The present medical system, focused on the acute episode of illness, is poorly equipped to deal with the health needs of the chronically ill elderly. The medical system has run them in and out of expensive general acute care hospitals and discharged them, often disabled, with no provision for care other than family endeavors. When the burden of caring for an elderly family member, the long term institution is often the only resort. Institutionalization is an expensive answer to the problems of the long termed disabled. North Carolina spent over 10 million dollars in state Medicaid contributions in fiscal year 1975 to support the elderly in long term skilled and intermediate care facilities. This fact coupled with the realization that institutionalization can be a demeaning and hopeless way to spend one's last years have spawned an interest in two alternatives-home health and geriatric day care. Both programs are aimed at allowing the aged the option of remaining in the community by supplementing family support for aged members. This article attempts to analyze the three alternatives as they operate in North Carolina, from a cost effectiveness point of view.
Additional file 1 of Distribution and trend of explosive cyclones over the Southern Ocean and associated atmospheric and oceanic changes during 1980–2020
Creators: name: Xu, Xiaoqi
name: Liu, Jiping
name: Huang, Gang
name: Ding, Yifan
Publisher: name: figshare
Year: 2024
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: Supplementary file 1.
O CONCEITO DE VULNERABILIDADE EM SAÚDE NO ÂMBITO DA SAÚDE COLETIVA: uma scoping review
Creators: name: Mattos, Samuel
name: Florêncio, Raquel
name: Moreira, Thereza
name: de Paula Pessoa, Vera
name: Cestari, Virna
name: Silva, Vanusa
name: Rabelo, Sara
name: Santiago, Jênifa
name: Borges, José
name: da Silva, Maria
name: Pereira, Maria
Publisher: name: Open Science Framework
Year: 2022

description: Mapear o conceito de vulnerabilidade em saúde no campo da saúde coletiva
Review: The Social Life of Artistic Property
Creators: name: Candy, Mia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The Social Life of Artistic Property, a collaborative project between five authors, explores creating productive and sustainable creative communities. Artistic property here refers both to art itself and to the physical spaces where art is made. The authors speak as artists who are also educators, organizers, scholars, and core members of creative collectives. They ask the reader to consider the value of three social experiments, and the plausibility of some potential social and financial interventions in the field of artistic production. Readers interested in the relationship between the art world and economic development will find this book flawed and disjointed while also novel and thought-provoking.
Optimal injective stability for the symplectic $K_1Sp$ group
Creators: name: Gupta, Anjan
Publisher: name: arXiv
Year: 2015
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics

description: If $R$ is a commutative ring, $I$ an ideal of $R$ and $v, w \in Um_{2n}(R, I)$ then we show that $v, w$ are in the same orbit of elementary action if and only if they are in the same orbit of elementary symplectic action. We also show that if $A$ is a non-singular affine algebra of dimension $d$ over an algebraically closed field $k$ such that $d! A = A$, $d \equiv 2 \pmod 4$ and $I$ an ideal of $A$, then $Um_d(A, I) = e_1{Sp}_d(A, I)$. As a consequence it is proved that if $A$ is a non-singular affine algebra of dimension $d$ over an algebraically closed field $k$ such that $(d + 1)!A = A$, $d \equiv 1 \pmod 4$ and $I$ a principal ideal then $Sp_{d-1}(A, I) \cap {ESp}_{d+1}(A, I) = {ESp}_{d -1}(A, I)$. We give an example to show that the above result does not hold true for an affine algebra over a $C_2$ field and also show by an example that the above stability estimate is optimal.
description: 16 pages
Additional file 1 of Surface air temperature anomalies over Antarctica and the Southern ocean induced by interactions between the interdecadal Pacific oscillation and Atlantic multidecadal oscillation
Creators: name: Yu, Lejiang
name: Zhong, Shiyuan
name: Sui, Cuijuan
name: Sun, Bo
Publisher: name: figshare
Year: 2024
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Supplementary Material 1.
Student Connection
Creators: name: Reis, Erin Deignan
name: Soto, Dolly
name: Dillon, Casey
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: If there was one overarching theme from the 2009- 2010 academic year, it was community-based learning. Through volunteerism, participation in local planning events, and interactions with regional leaders in the field, Master’s students gained knowledge and strengthened professional skills that will serve them well in building sustainable communities.
The Triangle Has Responsibilities as a World Class Region
Creators: name: Bergman, Edward M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: What is one to make of recent news accounts that reveal major difficulties in the Triangle region? We have all seen articles lately that trouble many observers. Research Triangle Park growth has stalled, and senior officials are leaving their posts. The Research Triangle Foundation's directors are considering numerous options for the Park's future development.
Photoinduced tunability of the Reststrahlen band in 4H-SiC
Creators: name: Spann, Bryan T.
name: Compton, Ryan
name: Ratchford, Daniel
name: Long, James P.
name: Dunkelberger, Adam D.
name: Klein, Paul B.
name: Giles, Alexander J.
name: Caldwell, Joshua D.
name: Owrutsky, Jeffrey C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Materials with a negative dielectric permittivity (e.g. metals) display high reflectance and can be shaped into nanoscale optical-resonators exhibiting extreme mode confinement, a central theme of nanophotonics. However, the ability to $actively$ tune these effects remains elusive. By photoexciting free carriers in 4H-SiC, we induce dramatic changes in reflectance near the "Reststrahlen band" where the permittivity is negative due to charge oscillations of the polar optical phonons in the mid-infrared. We infer carrier-induced changes in the permittivity required for useful tunability (~ 40 cm$^{-1}$) in nanoscale resonators, providing a direct avenue towards the realization of actively tunable nanophotonic devices in the mid-infrared to terahertz spectral range.
Spin-orbit driven magnetic insulating state with ${J}_{\mathrm{eff}}\mathbf{=}1/2$ character in a 4d oxide
Creators: name: Calder, S.
name: Li, L.
name: Okamoto, S.
name: Choi, Y.
name: Mukherjee, R.
name: Haskel, D.
name: Mandrus, D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The unusual magnetic and electronic ground states of 5d iridates has been shown to be driven by intrinsically enhanced spin-orbit coupling (SOC). The influence of appreciable but reduced SOC in creating the manifested magnetic insulating states in 4d oxides is less clear, with one hurdle being the existence of such compounds. Here we present experimental and theoretical results on Sr$_4$RhO$_6$ that reveal SOC dominated behavior. Neutron measurements show the octahedra are both spatially separated and locally ideal, making the electronic ground state susceptible to alterations by SOC. Magnetic ordering is observed with a similar structure to an analogous ${J}_{\mathrm{eff}}\mathbf{=}1/2$ Mott iridate. We consider the underlying role of SOC in this rhodate with density functional theory and x-ray absorption spectroscopy and find a magnetic insulating ground state with ${J}_{\mathrm{eff}}\mathbf{=}1/2$ character.
Coupling Between Magnetic and Transport Properties in Magnetic Layered Material Mn2-xZnxSb
Creators: name: Nabi, Md Rafique Un
name: Basnet, Rabindra
name: Pandey, Krishna
name: Chhetri, Santosh Karki
name: Upreti, Dinesh
name: Acharya, Gokul
name: Wang, Fei
name: Fereidouni, Arash
name: Churchill, Hugh O. H.
name: Guan, Yingdong
name: Mao, Zhiqiang
name: Hu, Jin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We synthesized single crystals for Mn2-xZnxSb and studied their magnetic and electronic transport properties. This material system displays rich magnetic phase tunable with temperature and Zn composition. In addition, two groups of distinct magnetic and electronic properties, separated by a critical Zn composition of x = 0.6, are discovered. The Zn-less samples are metallic and characterized by a resistivity jump at the magnetic ordering temperature, while the Zn-rich samples lose metallicity and show a metal-to-insulator transition-like feature tunable by magnetic field. Our findings establish Mn2-xZnxSb as a promising material platform that offers opportunities to study how the coupling of spin, charge, and lattice degrees of freedom governs interesting transport properties in 2D magnets, which is currently a topic of broad interest.
description: 23 pages, 5 figures, Figures are at the end of the manuscript
An Introduction to Sustainable Development
Creators: name: Brower, David J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Sustainable development is development that meets the needs of present generations without prejudicing the ability of future generations to meet their needs. This definition, coined by the World Commission on Environment and Development (often referred to as the Brundtland Commission) has caught the attention and earned the support of peoples around the world as perhaps no other concept has.
Two Universality Properties Associated with the Monkey Model of Zipf's Law
Creators: name: Perline, Richard
name: Perline, Ronald
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F99

description: The distribution of word probabilities in the monkey model of Zipf's law is associated with two universality properties: (1) the power law exponent converges strongly to $-1$ as the alphabet size increases and the letter probabilities are specified as the spacings from a random division of the unit interval for any distribution with a bounded density function on $[0,1]$; and (2), on a logarithmic scale the version of the model with a finite word length cutoff and unequal letter probabilities is approximately normally distributed in the part of the distribution away from the tails. The first property is proved using a remarkably general limit theorem for the logarithm of sample spacings from Shao and Hahn, and the second property follows from Anscombe's central limit theorem for a random number of i.i.d. random variables. The finite word length model leads to a hybrid Zipf-lognormal mixture distribution closely related to work in other areas.
description: 14 pages, 3 figures
I-BaR: Integrated Balance Rehabilitation Framework
Creators: name: Ersoy, Tugce
name: Kaya, Pınar
name: Hocaoglu, Elif
name: Unal, Ramazan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Neurological diseases are observed in approximately one billion people worldwide. A further increase is foreseen at the global level as a result of population growth and aging. Individuals with neurological disorders often experience cognitive, motor, sensory, and lower extremity dysfunctions. Thus, the possibility of falling and balance problems arise due to the postural control deficiencies that occur as a result of the deterioration in the integration of multi-sensory information. We propose a novel rehabilitation framework, Integrated Balance Rehabilitation (I-BaR), to improve the effectiveness of the rehabilitation with objective assessment, individualized therapy, convenience with different disability levels and adoption of an assist-as-needed paradigm and, with an integrated rehabilitation process as a whole, i.e., ankle-foot preparation, balance, and stepping phases, respectively. Integrated Balance Rehabilitation allows patients to improve their balance ability by providing multi-modal feedback: visual via utilization of Virtual Reality; vestibular via anteroposterior and mediolateral perturbations with the robotic platform; proprioceptive via haptic feedback.
description: 37 pages, 2 figures, journal paper
Meeting the Needs of Developing Countries: Introducing a New Program of Study (Commentary)
Creators: name: Lacey, Linda
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: Each day, planners in developing countries face a number of interrelated complex problems. In low-income countries in particular, major cities are doubling in population every ten to fifteen years. As a result of uncontrolled urban growth, planners are confronted with high levels of unemployment, major traffic congestion within the urban core, massive housing shortages, and inadequate public services such as safe water, sewage systems, roads and electricity. Urban-based problems are closely linked to high levels of rural unemployment and uneven regional development. The interdependent nature of problems facing developing countries requires integrated regional, rural and urban planning strategies
Smart Growth: How It is Helping Rural America
Creators: name: Levofsky, Amber
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Over the last several decades, rural populations have been growing at an exponential rate. While some rural communities have accommodated this growth through low-density development, other areas are employing smart growth techniques in an effort to preserve open space, ensure adequate affordable housing, integrate land use and transit, and encourage compact, mixed-use development. This article identifies the growing pains common among rural communities and highlights the accomplishments of seven communities that have successfully leveraged development strategies for the betterment of their communities.
Probing top-antitop resonances with $t\bar{t}$ scattering at LHC14
Creators: name: Liu, Da
name: Mahbubani, Rakhi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the sensitivity of the LHC at 14 TeV centre-of-mass energy (LHC14) to the single production and decay of top-antitop resonances in the four-top final state. We focus on the same-sign dilepton channel, and work within a simplified model with a vector boson coupling to the Standard Model only via its interactions with right-handed top quarks. We find it is possible to discover (exclude) such a vector boson with 300 fb$^{-1}$ of integrated luminosity up to a mass of 1.2 (1.6) TeV for a modest coupling to tops of $g_ρ$=2. We present our results as an exclusion limit on the cross-section$\times$branching ratio for ease of recasting, and interpret them in the context of the gauge-singlet vector boson $ρ_X$ present in many simple Composite Higgs theories.
The Community Land Trust: Preserving Affordable Housing Stock in Orange County, North Carolina
Creators: name: Crossfield, Erin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: Orange County, North Carolina, located in the state's booming Research Triangle region, is increasingly becoming an area in which only the affluent can afford to live, threatening the economic, racial and cultural diversity that is needed for a healthy society. In response to the county's dwindling supply of affordable housing, area activists and governments together established the Community Land Trust in Orange County (CLTOC), incorporated in 1999. Two years later, CLTOC is now beginning to realize its goal of creating housing that will remain permanently affordable for generations.
The Robustness of the Give-N Task as a Measure of Cardinal Proficiency: A Systematic Review and Meta-Analysis.
Creators: name: Thomas, Hannah
name: Lewis, Charlie
name: Dunn, Kirsty
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Developmental Psychology
subject: Quantitative Psychology
subject: Child Psychology
subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: The aim of this systematic review and meta-analysis is to determine the robustness of the Give-N task when assessing cardinality development in pre-school children. Specifically, it aims to assess: the different ways the Give-N task is implemented with pre-school children, if these differences in implementation contribute to the variance in pre-school children's pass rates, if there is a specific way of implementing the Give-N task to produce more consistent results, and if there are analogous ways the Give-N task is implemented which increase / reduce pre-school children's pass rates.
Farmland Preservation: Lessons from Orange County
Creators: name: McElyea, William D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1982

description: For years, state and local governments have experimented with a variety of growth management tools to maintain the economic viability of farming and to control spreading urbanization, public works projects, and other consumers of rural land. Orange County, North Carolina, is now in the process of instituting a Farm Preservation Program. This article describes the origin and nature of this program, evaluates its potential effectiveness at preserving farmland in Orange County, and makes suggestions for other North Carolina communities.
UNC-Chapel Hill DCRP Best Master’s Project of 2012: Densifying the Triangle: Examining How the Region is Planning to Reshape its Future
Creators: name: Vangel, Kyle J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Every year, faculty from the Department of City and Regional Planning at UNC-Chapel Hill determine the best master’s paper developed out of the graduating class. Below is only an extended abstract of the project. To obtain the original, full-length document, please visit the “Electronic Theses and Dissertation Collection” at http://dc.lib.unc.edu. This paper examines how planning processes in the Research Triangle region address the issue of higher density development. Three case studies examine how planning processes have wrestled with higher density development and provide examples of policies and measures that can encourage more compact development. Special consideration is given to how not-for-profit groups participating in these processes were able to advocate for higher density development, and why certain development management solutions to encourage higher densities gained favor in the region. Five strategies for encouraging higher density development are offered.
Planning for Inclusive Prosperity: Lessons from the North Carolina Experience
Creators: name: Lowe, Nichola
name: Lester, T. William
name: Tewari, Meenu
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: We present North Carolina as a working laboratory for agency within a new political economy. North Carolina has gone through a significant political transformation in recent years, threatening key institutions and channels for promoting inclusive forms for economic development. But this shift has not meant a wholesale loss or retreat of progressive actors and actions. Progress is still being made by planners and practitioners, though often in new forms and through alternative channels and partnerships. This paper presents three examples of continued efforts by planners to promote living wage standards, extend job-centered training opportunities, and upskill and upgrade legacy industries. It demonstrates the ways that planners can redirect policy goals and collectively articulate a vision of a more equitable form of economic development.
Crossover between localized states and pinned Wigner crystal in high-mobility n-GaAs/AlGaAs heterostructures near filling factor $ν=1$
Creators: name: Drichko, I. L.
name: Smirnov, I. Yu.
name: Suslov, A. V.
name: Pfeiffer, L. N.
name: West, K. W.
name: Galperin, Y. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured magnetic field dependences of the attenuation and velocity of surface acoustic waves in a high-mobility $n$-GaAs/AlGaAs structure with a wide quantum well. The results allowed us to find the complex conductance, $σ(ω)$, of the heterostructure for different frequencies, temperatures and magnetic fields near filling factors $ν=1, 2$. Observed behavior of $σ(ω)$ versus magnetic field outside close vicinities of integer fillings reveals an oscillation pattern indicative of the rich fractional quantum Hall effect. Our result is that in very close vicinities of integer filling factors the AC response of a high-mobility two-dimensional structures behaves as that of a two-dimensional system of localized electrons. Namely, both real and imaginary parts of the complex AC conductance at low temperatures agree with the predictions for the two-site model for a two-dimensional hopping system. Another result is the specific temperature dependences of $σ(ω)$, which are extremely sensitive to the filling factor value. These dependences indicate a sharp crossover between the localized modes and a pinned Wigner crystal.
description: 6 pages, 5 figures
UNC-Chapel Hill DCRP Best Master’s Project of 2008: Environmental Determinants of Bicycling to Rail Stations in Chicago
Creators: name: Schwartz, Michael A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: More and more transit agencies are incorporating cycling into their programs through bike to transit initiatives such as indoor bicycle parking at rail stations, as well as bicycles on buses and trains. In spite of the popularity and success of these programs, little research exists on whether this influences travel behavior, and transit planners and decision makers do not have a reliable way of gauging demand for bicycle facilities. In the Master’s Project excerpted here, annual counts of bicycles parked at Chicago Transit Authority rail stations and neighborhood GIS data were used to estimate longitudinal models of the environmental determinants of bicycling to rail stations. Results indicate that increased use of bicycle parking at rail stations was associated with higher station boardings, more bicycle parking facilities, lower residential density and crime, and fewer bus options, even while controlling for neighborhood demographics.
The QUAX proposal: a search of galactic axion with magnetic materials
Creators: name: Ruoso, Giuseppe
name: Lombardi, Augusto
name: Ortolan, Antonello
name: Pengo, Ruggero
name: Braggio, Caterina
name: Carugno, Giovanni
name: Gallo, Carmelo Sebastiano
name: Speake, Clive C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Aim of the QUAX (QUaerere AXion) proposal is to exploit the interaction of cosmological axions with the spin of electrons in a magnetized sample. Their effect is equivalent to the application of an oscillating rf field with frequency and amplitude which are fixed by axion mass and coupling constant, respectively. The rf receiver module of the QUAX detector consists of magnetized samples with the Larmor resonance frequency tuned to the axion mass by a polarizing static magnetic field. The interaction of electrons with the axion-equivalent rf field produces oscillations in the total magnetization of the samples. To amplify such a tiny field, a pump field at the same frequency is applied in a direction orthogonal to the polarizing field. The induced oscillatory magnetization along the polarizing field is measured by a SQUID amplifier operated at its quantum noise level.
description: 5 pages, Contribution for the proceedings of the TAUP2015, International Conference on Topics in Astroparticle and Underground Physics, 7-11 September 2015, Torino, Italy
Final Thoughts
Creators: name: Campanella, Thomas J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: I’ve always loved trains; the sound of a locomotive’s air horn piercing the night is as calming to me as a glass of wine. Rail, in my opinion, is the only civilized way to travel, with none of the stress and acrimony that comes from driving or flying. The United States pioneered the art of train travel well over a century ago, and by the 1930s possessed the finest rail infrastructure on Earth—including a vast matrix of streetcars and “inter-urbans” that delivered you practically at your doorstep. Of course, the civility of rail travel was sacrificed after World War II for the holy motor car, which flattered our American individualist ego and— let’s face it—proved awfully convenient for getting around.
Composite 3D-printed meta-structures for low frequency and broadband vibration absorption
Creators: name: Matlack, Kathryn H.
name: Bauhofer, Anton
name: Krödel, Sebastian
name: Palermo, Antonio
name: Daraio, Chiara
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Architected materials that control elastic wave propagation are essential in vibration mitigation and sound attenuation. Phononic crystals and acoustic metamaterials use band gap engineering to forbid certain frequencies from propagating through a material. However, existing solutions are limited in the low frequency regimes and in their bandwidth of operation because they require impractical sizes and masses. Here, we present a class of materials (labeled elastic meta-structures) that supports the formation of wide and low frequency band gaps, while simultaneously reducing their global mass. To achieve these properties, the meta-structures combine local resonances with structural modes of a periodic architected lattice. While the band gaps in these meta-structures are induced by Bragg scattering mechanisms, their key feature is that the band gap size and frequency range can be controlled and broadened through local resonances, which is linked to changes in the lattice geometry. We demonstrate these principles experimentally, using novel additive manufacturing methods, and inform our designs using finite element simulations. This design strategy has a broad range of applications, including control of structural vibrations, noise and shock mitigation.
description: 7 pages, 4 figures
Optimization theory of Hebbian/anti-Hebbian networks for PCA and whitening
Creators: name: Pehlevan, Cengiz
name: Chklovskii, Dmitri B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: In analyzing information streamed by sensory organs, our brains face challenges similar to those solved in statistical signal processing. This suggests that biologically plausible implementations of online signal processing algorithms may model neural computation. Here, we focus on such workhorses of signal processing as Principal Component Analysis (PCA) and whitening which maximize information transmission in the presence of noise. We adopt the similarity matching framework, recently developed for principal subspace extraction, but modify the existing objective functions by adding a decorrelating term. From the modified objective functions, we derive online PCA and whitening algorithms which are implementable by neural networks with local learning rules, i.e. synaptic weight updates that depend on the activity of only pre- and postsynaptic neurons. Our theory offers a principled model of neural computations and makes testable predictions such as the dropout of underutilized neurons.
description: Annual Allerton Conference on Communication, Control, and Computing (Allerton) 2015