cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Loss-Gain Equalized Reconfigurable Phaser for Dynamic Radio Analog Signal Processing (R-ASP)
Creators: name: Zou, Lianfeng
name: Gupta, Shulabh
name: Caloz, Christophe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a loss-gain equalized reconfigurable phaser for dynamic radio analog signal processing (R-ASP). Such a phaser provides real-time tunable group delay response with all-pass transmission. We propose a lumped loss-gain implementation, where tuning and equalization are mostly easily achieved. A theoretical study derives the transfer function and the fundamental characteristics of the device. The phaser is finally experimentally demonstrated, first using a single loss-gain pair and finally a three cascaded loss-gain pair structure with full reconfigurability , where up-chirp and down-chirp group delays are shown for illustration. It is expected that this phaser will find wide applications in radio analog signal processing (R-ASP) systems requiring dynamic adaptability.
Information-theoretic limits of Bayesian network structure learning
Creators: name: Ghoshal, Asish
name: Honorio, Jean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper, we study the information-theoretic limits of learning the structure of Bayesian networks (BNs), on discrete as well as continuous random variables, from a finite number of samples. We show that the minimum number of samples required by any procedure to recover the correct structure grows as $Ω(m)$ and $Ω(k \log m + (k^2/m))$ for non-sparse and sparse BNs respectively, where $m$ is the number of variables and $k$ is the maximum number of parents per node. We provide a simple recipe, based on an extension of the Fano's inequality, to obtain information-theoretic limits of structure recovery for any exponential family BN. We instantiate our result for specific conditional distributions in the exponential family to characterize the fundamental limits of learning various commonly used BNs, such as conditional probability table based networks, gaussian BNs, noisy-OR networks, and logistic regression networks. En route to obtaining our main results, we obtain tight bounds on the number of sparse and non-sparse essential-DAGs. Finally, as a byproduct, we recover the information-theoretic limits of sparse variable selection for logistic regression.
description: Accepted to AISTATS 2017, Florida
Do Libraries Create Social Capital?
Creators: name: Stambaugh, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002
Subjects: Volunteers
Library Programs
Public relations of libraries--Public libraries
Librarianship--Social aspects

description: This study analyzes the role of the library in creating social capital in the community. A set of public libraries was randomly selected from a list of communities identified as having high or low social capital. Specific aspects of library administration and services are tested against social capital levels to identify factors that may contribute to or depend upon social cohesion in the community. Some of these factors include community support for the library in the form of local and non-governmental funding, salaries and benefits, volunteer effort and program attendance. Specific types of programs and characteristics of targeted audiences are also studied to determine if library programs promote the types of social relationships that create social capital in the community.
Obligationen-Kopierbuch Nr. 2
Copie d'obligations II
Creators: name: Passavant & Cie
Publisher: name: [s.n.]
Year: 1883

description: Darin: Register, einzelne eingeklebte Einlagen
description: Französisch, Deutsch, Englisch
description: Verzeichnung=Description=Inventaire 2022 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Martin Lüpold
Fluctuation relations for anomalous dynamics generated by time-fractional Fokker-Planck equations
Creators: name: Dieterich, P.
name: Klages, R.
name: Chechkin, A. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Anomalous dynamics characterized by non-Gaussian probability distributions (PDFs) and/or temporal long-range correlations can cause subtle modifications of conventional fluctuation relations. As prototypes we study three variants of a generic time-fractional Fokker-Planck equation with constant force. Type A generates superdiffusion, type B subdiffusion and type C both super- and subdiffusion depending on parameter variation. Furthermore type C obeys a fluctuation-dissipation relation whereas A and B do not. We calculate analytically the position PDFs for all three cases and explore numerically their strongly non-Gaussian shapes. While for type C we obtain the conventional transient work fluctuation relation, type A and type B both yield deviations by featuring a coefficient that depends on time and by a nonlinear dependence on the work. We discuss possible applications of these types of dynamics and fluctuation relations to experiments.
description: 22 pages, 4 figures
Reconciling Vocabularies: Making connections between studio art and library research
Creators: name: Whiteside, Alice I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Information needs--Evaluation
Art--Information services
College and university libraries--Relations with faculty and curriculum
Art research

description: This study explores the role of library research in the studio art curriculum, contributing to the scholarly discourse on the information needs of art students. Raising the concern that previous studies simplify the creative process and conflate a wide range of information needs under the umbrella term "inspiration," this study examines the role of research in student work through a content analysis of recent studio art thesis statements at the University of North Carolina at Chapel Hill. The content analysis demonstrates that studio art students are engaged in a high level of inquiry in their creative projects and that they draw from a wide range of information sources to support this inquiry, including scholarly print material. It also shows areas in which this population could benefit from library instruction.
Theory of Curie temperature enhancement in electron-doped EuO
Creators: name: Stollenwerk, Tobias
name: Kroha, Johann
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a comparative, theoretical study of the doping dependence of the critical temperature $T_C$ of the ferromagnetic insulator-metal transition in Gd-doped and O-deficient EuO, respectively. The strong $T_C$ enhancement in Eu$_{1-x}$Gd$_x$O is due to Kondo-like spin fluctuations on the Gd sites, which are absent in EuO$_{1-x}$. Moreover, we find that the $T_C$ saturation in Eu$_{1-x}$Gd$_x$O for large $x$ is due to a reduced activation of dopant electrons into the conduction band, in agreement with experiments, rather than antiferromagnetic long-range contributions of the RKKY interaction. The results shed light on possibilities for further increasing $T_C$.
description: Published version; 3 references added
Obligationen-Kopierbuch Nr. 4
Copie d'obligations IV
Creators: name: Passavant & Cie
Publisher: name: [s.n.]
Year: 1888

description: Darin: Register, einzelne eingeklebte Einlagen
description: Französisch, Deutsch, Englisch
description: Verzeichnung=Description=Inventaire 2022 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Martin Lüpold
Second-order perturbation theory: problems on large scales
Creators: name: Pound, Adam
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In general-relativistic perturbation theory, a point mass accelerates away from geodesic motion due to its gravitational self-force. Because the self-force is small, one can often approximate the motion as geodesic. However, it is well known that self-force effects accumulate over time, making the geodesic approximation fail on long timescales. It is less well known that this failure at large times translates to a failure at large distances as well. At second perturbative order, two large-distance pathologies arise: spurious secular growth and infrared-divergent retarded integrals. Both stand in the way of practical computations of second-order self-force effects. Utilizing a simple flat-space scalar toy model, I develop methods to overcome these obstacles. The secular growth is tamed with a multiscale expansion that captures the system's slow evolution. The divergent integrals are eliminated by matching to the correct retarded solution at large distances. I also show how to extract conservative self-force effects by taking local-in-time "snapshots" of the global solution. These methods are readily adaptable to the physically relevant case of a point mass orbiting a black hole.
description: 25 pages. Submitted to PRD
The visual rewriting of Nancy Drew: an analysis of the cover art of the Nancy Drew Mystery Series from 1930-1999
Creators: name: Stowe, Jennifer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Series--History
Nancy Drew mystery stories
Book jackets

description: This study provides a qualitative visual analysis of selected covers from the Nancy Drew Mystery Series from the 1930's until the present. The analysis was conducted using research on non-verbal communication and facial expression as well as research done on composition and perception in order to show a progression in the way that Nancy Drew's character was portrayed. There are five characterizations of Nancy Drew that become apparent in performing a visual analysis of the artwork. The 1930's Nancy Drew is characterized as bold, capable and independent. She actively seeks out clues, and is shown in the center of the compositions. In subsequent characterizations Nancy Drew becomes progressively weaker, less in control. By the 1990's there is a complete reversal in the representation of her character. She is often shown being chased or threatened, the confidence of the 1930's being replaced by fear.
What Makes a Good Online Lesson Plan?: A Study of Instructional Resources Available through Digital Libraries
Creators: name: Roberts, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Digital Libraries--United States
Educational Technology--Electronic Records
Virtual library
Education Primary Sources

description: Digital libraries of American are useful instructional tools. They make primary source  materials available to a broad audience. Teachers can use digital collections to implement  holistic learning in their classrooms by using the bridging activities such as online lesson  plans. Online lesson plans provide teachers with suggestions of how to use the digital  collection materials in their class. This study is a content analysis of eighty-two online  lesson plans (OLPs) from six digital libraries focusing on American history for secondary  education students. OLPs were analyzed to determine the current characteristics of  existing OLPs, how OLPs assisted in encouraging higher-order thinking in secondary  instruction, and how considering OLPs can affect the design of digital libraries. Some  results show that the majority of OLPs encourage higher-order thinking and support the  research process for secondary students.
Strain engineering and photocatalytic application of single-layer ReS$_2$
Creators: name: Li, Yan-Ling
name: Li, Yunguo
name: Tang, Chunlin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a theoretical study on the electronic, dynamical, and photocatalytic properties of single-layer ReS$_2$ under uniaxial and shear strains. The single-layer ReS$_2$ shows strong anisotropic responses to straining. It remains dynamically stable for a wide range of $x$-axial strain, but becomes unstable for 2\% $y$-axial compressive strain. The single-layer ReS$_2$ is calculated to be an indirect bandgap semiconductor, and there is an indirect$-$direct bandgap transition under 1$-$5\% $x$-axial tensile straining. The single-layer ReS$_2$ is predicted incapable of catalyzing the water oxidation reaction. However, 1$-$5\% $y$-axial tensile strain can enable the single-layer ReS$_2$ for overall photocatalytic water splitting. Besides, the single-layer ReS$_2$ can also catalyze the overall water splitting and be most efficient under acidic water solutions with pH=3.8.
Naucleopsis capirensis C. C. Berg
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Moraceae
Naucleopsis
Naucleopsis capirensis

description: Naucleopsis capirensis C.C.Berg
 Terrestrial shrubs or trees. Distribution in PILA 700–1700 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest. Global distribution: Costa Rica to Ecuador. Records: D. Solano 4727 (BM, INB, MO, PMA), F. González 452 (INB), J. González 825 (CR, INB, MO).
 ψ Naucleopsis naga Pittier
Amargo, Naga, Quina (CR).
 Terrestrial trees. Distribution in PILA 0–1700 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest, dense thicket. Global distribution: Honduras to Ecuador. Records: G. Herrera 2674 (INB, MO). Uses: timber. Regional conservation status: Near Threatened (NT).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
MPEC 2023-T88 : 2023 BD10
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Thermal transport in a 2D stressed nanostructure with mass gradient
Creators: name: Barreto, R.
name: Carusela, M. F.
name: Viotti, A. Mancardo
name: Monastra, A. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Inspired by some recent molecular dynamics (MD) simulations and experiments on suspended graphene nanoribbons, we study a simplified model where the atoms are disposed in a rectangular lattice coupled by nearest neighbor interactions which are quadratic in the interatomic distance. The system has a mechanical strain, and the border atoms are coupled to Langevin thermal baths. Atom masses vary linearly in the longitudinal direction, modeling an isotope or doping distribution. This asymmetry and tension modify thermal properties. Although the atomic interaction is quadratic, the potential is anharmonic in the coordinates. By direct MD simulations and solving Fokker--Planck equations at low temperatures, we can better understand the role of anharmonicities in thermal rectification. We observe an increasing thermal current with an increasing applied mechanical tension. The temperatures and thermal currents vary along the transverse direction. This effect can be useful to establish which parts of the system are more sensitive to thermal damage. We also study thermal rectification as a function of strain and system size.
description: 9 pages, 8 figures
The use of relevance criteria in partially relevant documents
Creators: name: Maglaughlin, Kelly L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Information retrieval
Information needs--Evaluation
Relevance Judgements--evaluation--Deans Achievement Award--Best Masters Papers Awarded 2000
Relevance Feedback

description: This study investigates the use of relevance criteria in partially relevant documents by comparing it to the use of relevance criteria in relevant and not relevant documents. Participants, 12 social science graduate students, selected relevant and not relevant passages within 20 document representations and judged each document representation as a whole to be: relevant, partially relevant or non-relevant to their information need. Content analysis revealed 31 criteria, discussed positively and negatively, used by the participants when selecting passages and determining the document's relevance. Results indicate that partially relevant documents are selected based on the same criteria as relevant documents; they just do not meet as many criteria or do not satisfy the criteria to the same degree. Additionally, fewer than 50% of the documents judged relevant or not relevant were totally relevant or totally not relevant. These findings suggest possible solutions to problems with relevance feedback in information retrieval systems.
MPEC 2023-T89 : 2021 UO
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The Role of Principal Angles in Subspace Classification
Creators: name: Huang, Jiaji
name: Qiu, Qiang
name: Calderbank, Robert
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Subspace models play an important role in a wide range of signal processing tasks, and this paper explores how the pairwise geometry of subspaces influences the probability of misclassification. When the mismatch between the signal and the model is vanishingly small, the probability of misclassification is determined by the product of the sines of the principal angles between subspaces. When the mismatch is more significant, the probability of misclassification is determined by the sum of the squares of the sines of the principal angles. Reliability of classification is derived in terms of the distribution of signal energy across principal vectors. Larger principal angles lead to smaller classification error, motivating a linear transform that optimizes principal angles. The transform presented here (TRAIT) preserves some specific characteristic of each individual class, and this approach is shown to be complementary to a previously developed transform (LRT) that enlarges inter-class distance while suppressing intra-class dispersion. Theoretical results are supported by demonstration of superior classification accuracy on synthetic and measured data even in the presence of significant model mismatch.
Anarchy vs. Authority: Attitudes Towards Centralized Control in Social Tagging Systems
Creators: name: Modic, Michelle
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Metadata
Folksonomy
Tags (Metadata)

description: This study examines the perceptions of users towards centralized authority in social tagging systems.  Research shows that scholars and individuals overseeing social tagging projects see a number of pros and cons towards allowing users more control.  This study looks at another area of tagging, specifically what the users themselves think, by using content analysis of a message board thread on the topic of moderation in a particular social tagging system.  The findings indicate that, like the scholars and individuals overseeing social tagging projects, their views are fairly mixed.  Some want a system with strong moderation to weed out malicious users and fix mistakes.  Others don't trust moderators not to serve their own ends, and want a more open and creative system that they ultimately see as more honest.  The challenge for future social tagging system moderators is to please both groups without alienating either.
A study on conserving invariants of the Vlasov equation in semi-Lagrangian computer simulations
Creators: name: Einkemmer, Lukas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The semi-Lagrangian discontinuous Galerkin method, coupled with a splitting approach in time, has recently been introduced for the Vlasov--Poisson equation. Since these methods are conservative, local in space, and able to limit numerical diffusion, they are considered a promising alternative to more traditional semi-Lagrangian schemes. In this paper we study the conservation of important physical invariants and the long time behavior of the semi-Lagrangian discontinuous Galerkin method. To that end we conduct a theoretical analysis and perform a number of numerical simulations. In particular, we find that the entropy is nondecreasing for the discontinuous Galerkin scheme, while unphysical oscillations in the entropy are observed for the traditional method based on cubic spline interpolation.
Naucleopsis ulei Ducke
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Moraceae
Naucleopsis
Naucleopsis ulei

description: Naucleopsis ulei (Warb.) Ducke
Quina, Amargo (CR).
 Terrestrial trees. Distribution in PILA 0–400 m, low elevation mixed forest. Global distribution: Costa Rica to Bolivia. Records: A. Chacón 8 (INB, MO).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
mKdV equation approach to zero energy states of graphene
Creators: name: Ho, C. -L.
name: Roy, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We utilize the relation between soliton solutions of the mKdV and the combined mKdV-KdV equation and the Dirac equation to construct electrostatic fields which yield exact zero energy states of graphene.
description: 4 pages, 4 figures. Abstract and figures improved, references updated
A Transaction Log Analysis of NCSU's Faceted Navigation OPAC
Creators: name: Lown, Cory
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008
Subjects: Classification--Systems--Faceted
North Carolina State University--Libraries
End-user searching--Evaluation
Online catalogs--Evaluation
Online catalogs
Endeca Technologies Inc.

description: Since 2006 a small number of libraries have implemented faceted navigation on their  online catalogs. This number seems likely to increase. Aside from small differences in  some of the details of these interfaces, the implementations are remarkably similar,  especially among academic libraries. A number of assumptions have gone into the design  of the faceted catalogs. However, there is little empirical evidence available to suggest  how people use text searching in combination with faceted navigation in a library catalog.  This study reports the results of log analysis of the NCSU Endeca interface for searches  conducted between January and April 2007. Findings from this exploratory study will be  useful for designing user studies to answer additional questions about faceted navigation  systems.
Activism, Accountability, Access: Archival Outreach and the LGBT Community
Creators: name: DiVeglia, Angela L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010
Subjects: Archives--Collection development
Archives--Reference services

description: This paper is a case study illuminating the hopes and concerns of a sample of the LGBT (Lesbian, Gay, Bisexual, and Transgendered) population in regards to their personal and organizational materials. Through a series of interviews with an archivist, a current donor to an archives, and four potential donors who are LGBT activists, the researcher compiles various reactions to themes arising in archival literature about LGBT collections. Using community archives as a model, the researcher and interviewees delineate ways in which archives can respond to LGBT donors' needs and concerns, both pre- and post-donation.
Thermalization of Topological Entropy after a Quantum Quench
Creators: name: Zeng, Yu
name: Hamma, Alioscia
name: Fan, Heng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In two spatial dimensions, topological order is robust for static deformations at zero temperature, while it is fragile at any finite temperature. How robust is topological order after a quantum quench? In this paper we show that topological order thermalizes under the unitary evolution after a quantum quench. If the quench preserves gauge symmetry, there is a residual topological entropy exactly like in the finite temperature case. We obtain this result by studying the time evolution of the topological 2-Rényi entropy in a fully analytical, exact way. These techniques can be then applied to systems with strong disorder to show whether a many-body localization phenomenon appears in topologically ordered systems.
description: new plot with finite time results added; typos fixed
Algebraic Conditions for Generating Accurate Adjacency Arrays
Creators: name: Dibert, Karia
name: Jansen, Hayden
name: Kepner, Jeremy
Publisher: name: arXiv
Year: 2015
Subjects: subject: Databases (cs.DB)
subject: Data Structures and Algorithms (cs.DS)
subject: Rings and Algebras (math.RA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Data processing systems impose multiple views on data as it is processed by the system. These views include spreadsheets, databases, matrices, and graphs. Associative arrays unify and simplify these different approaches into a common two-dimensional view of data. Graph construction, a fundamental operation in the data processing pipeline, is typically done by multiplying the incidence array representations of a graph, $\mathbf{E}_\mathrm{in}$ and $\mathbf{E}_\mathrm{out}$, to produce an adjacency matrix of the graph that can be processed with a variety of machine learning clustering techniques. This work focuses on establishing the mathematical criteria to ensure that the matrix product $\mathbf{E}_\mathrm{out}^\intercal\mathbf{E}_\mathrm{in}$ is the adjacency array of the graph. It will then be shown that these criteria are also necessary and sufficient for the remaining nonzero product of incidence arrays, $\mathbf{E}_\mathrm{in}^\intercal\mathbf{E}_\mathrm{out}$ to be the adjacency matrices of the reversed graph. Algebraic structures that comply with the criteria will be identified and discussed.
description: 2015 IEEE MIT Undergraduate Research Technology Conference
Clearer visibility Hong-Ou-Mandel effect with correlation function based on rates rather than intensities
Creators: name: Rosołek, Krzysztof
name: Kostrzewa, Kamil
name: Dutta, Arijit
name: Laskowski, Wiesław
name: Wieśniak, Marcin
name: Żukowski, Marek
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We test ideas put forward e.g in arXiv:1508.02368, which suggest that using rates in quantum optics can lead to better indicators of non-classicality for states of quantum optical fields with undefined photon numbers. By rate we mean the ratio of registered photons in a given detector to the total number of detected photons in all detectors in the experiment. For the Hong-Ou-Mandel effect for parametric down conversion fields, we show that by using two detector correlation functions which are defined in terms of averages of products of measured rates, rather than usual intensities, one can observe non -- classical visibilities beyond $1/2$ for significantly higher pump rates. At such rates we already have a partially stimulated emission which leads to significant amplitudes for multiple pairs production, still the new approach allows to clearly see the non-classical dip.
description: 5 pages, 1 figure
Grand-potential phase field simulations of droplet growth and sedimentation in a two-phase ternary fluid
Creators: name: Verdier, Werner
name: Cartalade, Alain
name: Plapp, Mathis
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A methodology is built to model and simulate the dynamics of domain coarsening of a two-phase ternary liquid with an arbitrary phase diagram. High numerical performance is obtained through the use of the phase field-method for interface capturing, a lattice Boltzmann method numerical scheme for all the model equations, and a portable, parallel simulation code running on multiple GPUs. The model is benchmarked against an analytic solution for a ternary diffusion couple. It also reproduces the well-known power law for droplet coarsening during Ostwald ripening without fluid flow. Large-scale simulations with flow illustrate the effects of momentum transport and buoyancy, as well as droplet coalescence and sedimentation.
description: 40 pages, 8 figures
Marketing the Digital Divide:  Case Studies of Two Telecenters in Thailand
Creators: name: Herzog, Elizabeth Ronan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008
Subjects: Community informatics
Information technology--Social aspects
Digital divide--Developing countries
Digital divide--Thailand

description: This study describes and evaluates the marketing strategies employed by two telecenters in rural Thailand. Telecenters are facilities that provide information and communication technology services to under-served populations in an effort to close the "digital divide". Interviews with key players involved in the management of the telecenters were conducted in order to determine the marketing practices in use. Questionnaire surveys of telecenter users and nonusers determined the effect of the marketing efforts on the community. The interviews clarified the challenges that the telecenters face. The survey results indicate that word-of-mouth advertising is the most successful marketing approach in use.
Poulsenia armata Standl.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Moraceae
Poulsenia
Poulsenia armata

description: Poulsenia armata (Miq.) Standl.
Calugo, Chilamate espina, Mastate, Calabacillo de playa, Chilamate espinoso, Chilamate (CR), Cocua, Cucua, Mastate (P).
 Terrestrial trees. Distribution in PILA 0–1100 m, low elevation mixed forest, mixed forest in transition to low elevation forest. Global distribution: Mexico, Guatemala, Costa Rica to Bolivia. Records: D. Santamaría 6020 (BM, INB, MO, PMA). Uses: timber.
 ψ Pseudolmedia glabrata (Liebm.) C.C.Berg
 Terrestrial trees. Distribution in PILA 200–1800 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest. Global distribution: Guatemala to Costa Rica. Records: L. Acosta 2351 (INB). Regional conservation status: Near Threatened (NT).
 ψ Pseudolmedia spuria (Sw.) Griseb.
Casanegro, Guapinolillo, Guiubra, Ojochillo, Ojoche colorado (CR).
 Terrestrial trees. Distribution in PILA 0–1900 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest. Global distribution: Guatemala to Costa Rica. Records: N. Zamora, Aug. 4, 2008 (Field obs.), N. Zamora, Jul. 30, 2008 (Field obs.). Regional conservation status: Near Threatened (NT).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Electronic reserve services at UNC-Chapel Hill: Faculty and student perceptions of personal control, access, and service quality
Creators: name: Cobine, Charles J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Automation of library processes--Reserve collections
University of North Carolina at Chapel Hill Library Reserve Collections
Use studies--College and university libraries
College and university libraries--Reserve collections
Surveys--College and university libraries
Robert B. House Undergraduate Library

description: This paper examines the current state of practice and management of electronic course reserve systems. The results of a Fall 2003 survey of 89 faculty, graduate, and undergraduate users of the UNC-Chapel Hill E-Reserves system, which uses Docutek ERes, are presented. Complementary use of course management software, the influence of copyright, and need for copyright management features are discussed. Survey questions addressed attitudes of users toward customer service from Reserves Staff; legibility of materials; preferences for paper vs. the electronic; the user-initiated, navigability-related, and environmental limitations of access; information about points of access; printing services; and perceptions of usability.
Sorocea pubivena Hemsl.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Moraceae
Sorocea
Sorocea pubivena

description: Sorocea pubivena Hemsl.
Ojochillo (CR).
 Terrestrial shrubs or trees.Distribution in PILA 0–1100 m, low elevation mixed forest, mixed forest in transition to low elevation forest. Global distribution: Nicaragua to Guyana, Brazil. Records: D. Santamaría 6140 (BM, INB, MO, PMA), D. Santamaría 7850 (PMA), D. Solano 4555 (BM, INB, MO, PMA), G. Gallardo 321 (CR).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
A Preliminary Usability Study of the Dryad Database of Biological Data
Creators: name: Chapman, Cory
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Usability study
Web databases
Scientific and technical literature--Biological literature

description: This paper reports on a usability test (n=10) that evaluated the web interface of the Dryad repository of biological data. Participants, mostly biologists, were asked to find information about the database, find and download data, and upload data. These three workflows were tested with a card sorting procedure and a think-aloud protocol. The results suggest that biologists interact with online database systems much like non- biologists; color, placement, and size of buttons and text were important determiners of recognition and acknowledgement. However, while most web users prefer browsing to seek information on new websites, participants in this study preferred searching. Most participants did not arrive at the website at the homepage, and thus reported a lack of information about Dryad at their initial entry point. Recommendations for enhancing Dryad specifically and web database interfaces in general are included.
Building National Libraries: The British Library and the Bibliotheque Nationale de France
Creators: name: Imamoto, Rebecca
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002
Subjects: Architecture and building--program and planning
National libraries--Britain
Library buildings
Library architecture
National libraries--France
Architecture and building--national libraries

description: In the last ten years, the library field has been characterized by a notable number of constructions of new national library buildings. This paper describes the designing and building process of two such projects, the British Library and the Bibliothèque Nationale de France. Research for this paper involved the evaluation of recent writings by librarians, architects, journalists, and scholars concerned with both libraries. The main focus was to examine the major concerns, obstacles, librarian involvement, and common mistakes associated with planning and building a national library.
COLLECTION OF EVIDENCE IN THE INVESTIGATION OF CRIMES: INTERNATIONAL AND EUROPEAN STANDARDS
Creators: name: Chornous, Yuliia
name: DULSKYI, OLEKSANDR
name: MORHUN, NADIIA
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 489999
subject: Other law and legal studies not elsewhere classified

description: The task of criminal procedural law can be achieved by collecting and evaluating evidence, which is legally considered the basis of the criminal process. In the current conditions of the military aggression of the Russian Federation on the territory of Ukraine, the issue of gathering evidence both on the controlled and uncontrolled territory of Ukraine has become particularly relevant. With this in mind, it is significant to explore the international legal regulation of evidence and understand the problematic issues of implementing international standards into national regulation.The purpose of the work is the study of evidence, namely the analysis of international and European standards for gathering evidence.COLLECTION OF EVIDENCE IN THE INVESTIGATION OF CRIMES: INTERNATIONAL AND EUROPEAN STANDARDS(JLPS)386The research methodology consists of such methods as: dialectical, metaphysical, systemic, synergistic, anthropological, logical, historical, systemic-structural, structural-functional, formal-legal, comparative-legal methods.As a result of the conducted research, it was possible to understand the peculiarities of the international legal regulation of the criminal activity of evidence. Particular lookout is held to the peculiarities of evidence collection. Also, attention is paid to the experience of creation, formation, and application of international tools for information exchange and evidence collection, their implementation in national legal systems, and problematic issues in a given context.
Stochastic feedback control of quantum transport to realize a dynamical ensemble of two nonorthogonal pure states
Creators: name: Daryanoosh, Shakib
name: Wiseman, Howard M.
name: Brandes, Tobias
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Markovian open quantum system which relaxes to a unique steady state $ρ_{ss}$ of finite rank can be decomposed into a finite physically realizable ensemble (PRE) of pure states. That is, as shown by Karasik and Wiseman [Phys. Rev. Lett. 106, 020406 (2011)], in principle there is a way to monitor the environment so that in the long time limit the conditional state jumps between a finite number of possible pure states. In this paper we show how to apply this idea to the dynamics of a double quantum dot arising from the feedback control of quantum transport, as previously considered by one of us and co-workers [Phys. Rev. B 84, 085302 (2011)]. Specifically, we consider the limit where the system can be described as a qubit, and show that while the control scheme can always realize a two-state PRE, in the incoherent tunneling regime there are infinitely many PREs compatible with the dynamics that cannot be so realized. For the two-state PREs that are realized, we calculate the counting statistics and see a clear distinction between the coherent and incoherent regimes.
description: 11 pages, 4 figures
Neea amplifolia Donn. Sm.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Nyctaginaceae
Neea
Neea amplifolia

description: Neea amplifolia Donn.Sm.
Bombeta, Corcho, Ayotillo (CR).
 Terrestrial shrubs or trees. Distribution in PILA 0–2200 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest, low elevation oak forest. Global distribution: Nicaragua to Ecuador. Records: D. Solano 4169 (BM, INB, MO, PMA).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Weyl-Einstein structures on K-contact manifolds
Creators: name: Gauduchon, Paul
name: Moroianu, Andrei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We show that a compact K-contact manifold $(M,g,ξ)$ has a closed Weyl-Einstein connection compatible with the conformal structure $[g]$ if and only if it is Sasaki-Einstein.
description: 9 pages; an error in the statement and proof of Theorem 3.2 was corrected
On the Road Again: Planning the Transfer of an Academic Transportation Research Library's Archival Collection to University Archives
Creators: name: Germeck, Karl
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016
Subjects: Libraries
Small libraries
Project management
Library special collections--Manuscripts
Archives
Project planning

description: So much of project planning is circumstantial. Even after the approval of a formal project proposal or plan, an unsuspecting shift in environmental factors can often alter or redirect a project’s original objectives, goals, and purpose. In the face of such change it is not uncommon for members of a project team to find themselves, in a sense, “on the road again,” re-evaluating and perhaps even re-envisioning the course and direction of a project. Project planning practiced in this way—as a continuous process as opposed to a single, linear stage completed prior to a project’s launch—provided the small, one-person transportation research library at the University of North Carolina Highway Safety Research Center (HSRC) with a manageable way to plan and keep project documentation during a three-year period, from 2013 to 2016, that saw tremendous change to the library and its larger role at HSRC. This report documents the process of composing a project plan for transferring HSRC Library’s archival collection of original research manuscripts, publications, and ephemera to UNC-CH University Archives and illustrates one way a project planner might create and keep project plan documentation within small and single-librarian environments.
Heisteria macrophylla Oerst.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Santalales
Erythropalaceae
Heisteria
Heisteria macrophylla

description: Heisteria macrophylla Oerst.
Chupeta, Manglillo, Sombrerito naranjillo (CR).
 Terrestrial shrubs. Distribution in PILA 0–1500 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest. Global distribution: Honduras to Panama. Records: F. González 466 (INB), L. Angulo 166 (INB, MO).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
title: Rückenwind für die systemtreuen Pragmatiker: Parlaments- und Expertenratswahlen in Iran
Creators: name: Ebert, Christian
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: Wahlen
Liberalisierung
Pragmatiker
Naher und Mittlerer Osten
Middle East (Near East)
Expertenrat
Präsident Rouhani
Iran
gemäßigte Konservative

description: • Moderate und pragmatische Kräfte gehen gestärkt aus den Parlamentswahlen hervor, der politische Mainstream bewegt sich zur Mitte • Unterstützer Präsident Rouhanis wollten radikale Gegner der aktuellen Außen- und Wirtschaftspolitik schwächen und gemäßigte Konservative stärken • Die anhaltende Machtkonzentration Ultrakonservativer im Expertenrat und in den nicht gewählten Institutionen des Systems bremst jedoch weiterhin eine wirtschaftliche und vor allem politische Liberalisierung des Landes • Vor diesem Hintergrund bleibt die derzeitige Kooperation zwischen moderaten und pragmatisch-konservativen Kräften instabil
The impact of stress and social behavior on daily cortisol in adolescents and young adults with autism spectrum disorders: associations with mental health
Creators: name: Ilen, Laura
name: Feller, Clémence
name: Sandi, Carmen
name: Zanoletti, Olivia
name: Schneider, Maude
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Clinical Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This project investigates diurnal cortisol profiles in adolescents and young adults with autism spectrum disorders, as well as their associations with stress, social impairments and mental health.