cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Maternal influence on adolescents' formation of work-family gender ideology: variations by gender, race, and ethnicity
Creators: name: Lewis, Jamie Michelle
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: This thesis investigates the influence of maternal work-family ideology and employment history on the ideology of their adolescent sons and daughters, as well as differences in the process of intergenerational transfer by gender and race/ethnicity. These questions are addressed using data from the National Longitudinal Survey of Youth 1979 (NLSY79) and the Children of the NLSY79. Results indicate that mothers with more egalitarian gender attitudes, especially those who support women's employment, transmit egalitarian work-family ideals to their children. Sons and daughters also develop more egalitarian work-family ideology when their mothers work in more prestigious occupations. Gender and racial differences in the process are found. Sons respond more to their mothers' behavior, whereas girls react more to maternal attitudes. In addition, maternal gender ideology is more influential for White youth than for Hispanic or African American children.
Analysis of linear waves near the Cauchy horizon of cosmological black holes
Creators: name: Hintz, Peter
name: Vasy, Andras
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 58J47, Secondary 35L05, 35P25, 83C57

description: We show that linear scalar waves are bounded and continuous up to the Cauchy horizon of Reissner-Nordström-de Sitter and Kerr-de Sitter spacetimes, and in fact decay exponentially fast to a constant along the Cauchy horizon. We obtain our results by modifying the spacetime beyond the Cauchy horizon in a suitable manner, which puts the wave equation into a framework in which a number of standard as well as more recent microlocal regularity and scattering theory results apply. In particular, the conormal regularity of waves at the Cauchy horizon - which yields the boundedness statement - is a consequence of radial point estimates, which are microlocal manifestations of the blue-shift and red-shift effects.
description: 56 pages, 14 figures. v2 is the published version, with fewer typos and updated references
Vacuum Stability of a General Scalar Potential of a Few Fields
Creators: name: Kannike, Kristjan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We find analytical vacuum stability or bounded below conditions for general scalar potentials of a few fields. After a brief review of copositivity we go beyond it. We discuss the vacuum stability conditions of the general potential of two real scalars, without and with the Higgs boson included in the potential. As further examples, we give explicit vacuum stability conditions for the two Higgs doublet model with no explicit CP breaking, and for the $\mathbb{Z}_{3}$ scalar dark matter with an inert doublet and a complex singlet. We give a short overview of positivity conditions for tensors of quartic couplings via tensor eigenvalues. A Mathematica notebook with the conditions is included with the source files.
description: 24 pages, 5 figures, Mathematica notebook included in the source, 2HDM conditions corrected, simple numerical code for tensor eigenvalues added
Production of new colonies of Melipona subnitida Ducke (Hymenoptera: Apidae) by reclamation of excess virgin queens
Creators: name: Eleutério, Paloma
name: Rocha, Epifânia E. M.
name: Freitas, Breno M.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Evolutionary Biology
subject: Ecology
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Developmental Biology
subject: Marine Biology
subject: Cancer

description: One of the limitations to greater expansion of Meliponiculture and conservation efforts of most stingless bee species is related to the low reproductive rate of colonies, both in the wild and in meliponaries. However, in Melipona, colonies regularly produce an excessive number of virgin queens which are eliminated by the workers. Here, we investigated the use of the excess of virgin queens produced in colonies of Melipona subnitida to produce new colonies using the minimum resources possible from the mother colonies. Virgin queens were evaluated for the acceptance by workers and the establishment of new colonies; the main behaviors they presented and their possible connection to physiological responses were recorded. After that, we evaluated the mating success of the accepted queens and the establishment of new colonies in meliponaries in different environments and with different contexts of male production. The results showed that the age of the virgin queens is not a limiting factor for their acceptance by the workers but the existence of clusters of males is essential for the fertilization and establishment of the new colonies. Under these conditions, the method had a 36.7% success rate, roughly producing a new colony for every three queens that would have been wasted. The method proved to be promising for producing a large number of new colonies descending from virgin queens that are normally eliminated, with little use of resources and in a short period of time. Although only tested on M. subnitida, it can potentially be used for any species of Melipona.
The geometry of learning
Creators: name: Calcagni, Gianluca
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: We establish a correspondence between Pavlovian conditioning processes and fractals. The association strength at a training trial corresponds to a point in a disconnected set at a given iteration level. In this way, one can represent a training process as a hopping on a fractal set, instead of the traditional learning curve as a function of the trial. The main advantage of this novel perspective is to provide an elegant classification of associative theories in terms of the geometric features of fractal sets. In particular, the dimension of fractals can measure the efficiency of conditioning models. We illustrate the correspondence with the examples of the Hull, Rescorla-Wagner, and Mackintosh models and show that they are equivalent to a Cantor set. More generally, conditioning programs are described by the geometry of their associated fractal, which gives much more information than just its dimension. We show this in several examples of random fractals and also comment on a possible relation between our formalism and other "fractal" findings in the cognitive literature.
description: 17 pages, 7 figures, 1 table. v2: new sections, figures and references added, including discussions on random fractals and their applications and on 1/f cognitive noise models; v3: consequences and predictions of the theory added, typos corrected
Managing humanitarian operations: the impact of amount, schedules, and uncertainty in funding
Creators: name: Natarajan, Karthik V.
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Global health spending has increased manyfold in the last few decades reaching US $6.5 trillion in 2012. Despite these increases, humanitarian organizations from around the world, working on different diseases including Malaria and Tuberculosis, have warned about potential funding shortfalls in the near future. Facing a growing need for health services and commodities, resource-constrained organizations are constantly looking for ways to maximize health outcomes through efficient and effective use of available resources. In this dissertation, we develop approaches to make efficient operational decisions under variable and unpredictable donor funding, a situation that is commonly faced by many humanitarian organizations. In the first chapter, we study the problem of managing inventory of a nutritional product under variable funding constraints. Despite the complexities associated with funding, we show that the optimal replenishment policy is easy to compute and straightforward to implement. We also provide several insights into how the funding amount, funding schedules and uncertainty in funding impact operating costs in this setting. In chapter 2, we look at the problem of dynamically allocating a limited amount of donor funding to patients in different health states in a humanitarian health setting. We show that the optimal allocation policy is state-dependent and prove several structural properties of the optimal policy that would help simplify its computation. Due to the complexity involved in calculating the optimal policy, we develop two heuristics to handle real-size problems with longer planning horizons. Computational results suggest that both heuristics perform well in many cases but one of the heuristics is more robust across a wide variety of settings. In addition to the allocation policy, we also provide some interesting insights into the impact of funding level and funding uncertainty in the multiple health states setting. In the third chapter, we focus on the supply- vs. demand-side investment dilemma frequently faced by public health managers who have a limited budget at their disposal. First, we consider a centralized setting where a single entity, referred as the principal, makes both supply- and demand-side investment decisions. We determine the principal's optimal investment mix in this budget constrained environment and provide insights into how the investment mix varies with the different supply- and demand-side parameters. We then consider a decentralized setting where the principal invests in improving the supply chain while demand mobilization activities are contracted to an agent, who is a profit maximizer. For the decentralized setting, we identify two contracts that ensure that the coverage in the decentralized setting is at least as high as the centralized case.
Current status of meliponiculture and its cultural importance in the Western Ghats, India
Creators: name: Charanakumar
name: Bhatta, Chet P.
name: Chandrashekar, J. S.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Literature records indicate that ethnic people from different areas of the Western Ghats practice meliponiculture. However, ethnobiological knowledge and beekeeping practices remain poorly documented. We conducted ethnographic surveys in 6 districts of Karnataka and recorded traditional uses and current practices of meliponiculture from the region. We also offer a quantitative analysis to explore the relative cultural importance of stingless bees among these ethnic groups. Bees and bee products are primarily used for food, medicines, crafts, and cultural beliefs. Bamboo poles, clay pots, and traditional log hives are used to keep stingless bees in the front and backyards. Among the five ethnic communities, the Brahmins are practicing the most sustainable meliponiculture using some innovative hives built from locally available materials. Moreover, they explore safe honey extraction techniques for minimal damage to the colonies. The Kunbis tribe, who lives primarily inside the Kali Tiger Forest Reserve, utilizes the bees and bee products maximally compared to the other four ethnic communities. However, the Kunbis people largely exploit bees through destructive extractive practices and pose threats to the colony’s survival. Herein, we report traditional knowledge and current status of meliponiculture practices among five ethnic communities (the Brahmins, the Gowdas, the Naiks, the Marathas and the Kunbis) of the Western Ghats region in the state of Karnataka. We also gather biological information such as nesting substrates, nesting characteristics, and behavior of bees from the area, which will be crucial for the local conservation and sustainable meliponiculture in the Western Ghats region of India.
Separating Ore sets for prime ideals of quantum algebras
Creators: name: Fryer, Siân
name: Yakimov, Milen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16T20 (Primary), 17B37, 14M15 (Secondary)

description: Brown and Goodearl stated a conjecture that provides an explicit description of the topology of the spectra of quantum algebras. The conjecture takes on a more explicit form if there exist separating Ore sets for all incident pairs of torus invariant prime ideals of the given algebra. We prove that this is the case for the two largest classes of algebras of finite Gelfand-Kirillov dimension that fit the setting of the conjecture: the quantized coordinate rings of all simple algebraic groups and the quantum Schubert cell algebras for all symmetrizable Kac-Moody algebras.
description: 14 pages, AMS Latex
Efficient recycling strategies for preparing large Fock states from single-photon sources --- Applications to quantum metrology
Creators: name: Motes, Keith R.
name: Mann, Ryan L.
name: Olson, Jonathan P.
name: Studer, Nicholas M.
name: Bergeron, E. Annelise
name: Gilchrist, Alexei
name: Dowling, Jonathan P.
name: Berry, Dominic W.
name: Rohde, Peter P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fock states are a fundamental resource for many quantum technologies such as quantum metrology. While much progress has been made in single-photon source technologies, preparing Fock states with large photon number remains challenging. We present and analyze a bootstrapped approach for non-deterministically preparing large photon-number Fock states by iteratively fusing smaller Fock states on a beamsplitter. We show that by employing state recycling we are able to exponentially improve the preparation rate over conventional schemes, allowing the efficient preparation of large Fock states. The scheme requires single-photon sources, beamsplitters, number-resolved photo-detectors, fast-feedforward, and an optical quantum memory.
description: 10 pages, 11 figures
Leading the life of a modern girl: representations of womanhood in Cuban popular culture
Creators: name: Lotz, Lizabeth M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: This dissertation looks at the central role the figure of the Modern Girl had on understandings of gender norms in 1920s Cuba. The international Modern Girl served as an embodiment of the varied challenges to the gender hierarchy. Within a generation, women throughout the island were cutting their hair, wearing short skirts, attending unchaperoned outings, and openly flirting with the opposite sex. Through her modern appearance, behavior, and attitude, the Modern Girl prompted debates over what it meant to be a Cuban woman, and moreover how the new version of womanhood related to notions of national identity. Popular magazines emanating from the Havana promoted the Modern Girl as the new model of ideal femininity. However, the outpouring of support for the Modern Girl did not indicate that Cubans had unconditionally embraced the changes in cultural practices. Rather, multiple versions of the archetype emerged, all varying in degrees of acceptability. Rather than voicing disapproval directly, most public censure surfaced through the more indirect means of mockery and sexualization. This reaction was most common among male commentators who tended to glamorize and praise the Modern Girl, but did so by typecasting her as frivolous, superficial, and materialistic. These methods of critique served to undermine women's accomplishments and opportunities, making them appear harmless and unimportant. But they also reflected social angst towards the sudden transformations affecting Cuban society. In contrast, most female journalists and readers took cultural changes much more seriously than men by noting how modern trends related to modern women's increased autonomy and practical needs. The figure of the Modern Girl thus provided women with an opening to contest, defy, and continuously redefine established gender norms. The lifestyle of the Modern Girl served as a means for women to express their new-found sense of freedom, while also making them more acutely aware of gender inequalities and providing them with a sense of empowerment to challenge the gender hierarchy.
Entrants in the political arena: new party trajectories during the third wave of democracy in Latin America
Creators: name: Mustillo, Thomas J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The frequency and impact of new parties in Latin America’s new democracies has been profound, especially in comparison to their role in established democracies. From the relatively stable Chile and Uruguay to the highly volatile Ecuador and Bolivia, new entrants have altered national party systems. The electoral fortunes of new parties have been diverse. Most studies of new parties dichotomously classify them into successes and failures. In the more stable party systems of the world, this approach may be sufficient. However, in unstable systems of the developing world where volatility is high, the quality of representation is low, and parties are weakly institutionalized, we are likely to find more than two distinctive categories of party performance. This project begins with an analysis of the legislative electoral performance of all new parties from Bolivia, Chile, Ecuador and Venezuela using latent trajectory models and finds that there are five distinctive performance profiles among the population. I call these groups the explosive, contender, flash, flat and flop trajectories and classify each party into one group. In the relative stability of Chile there are parties of two types while the other systems have more diversity. Theories of new party success have largely focused on advanced party systems where party competition and linkages with voters are centered around issues and programs. Party systems in Latin America don’t often follow this logic. When they don’t, these theories can’t explain new party performance. In the second part of this project I use a nested research design—a small-N qualitative analysis of new parties in Ecuador nested in a large-N quantitative analysis of new parties in Ecuador, Venezuela and Bolivia—to build and test an alternative explanation of new party performance centered on organizational features of the parties, and specifically on their programmatic, machine, personalistic, or vote-buying strategic orientation. I find that in unstable party systems, to be a contender a new party must build a national network of machine-based linkages with constituents that are geographically rather than economically or socially defined; have access to considerable discretionary resources; and be weakly constrained by organizationally articulated programmatic demands.
Loss Experiences of Youth in Foster Care: An Exploration of Loss Beyond Death
Creators: name: Yousuf-Abramson, Sheila  G
Publisher: name: University of Illinois at Chicago
Year: 2023

description: The purpose of this study was to explore the disenfranchised loss experiences of young adults who were formerly in foster care or transitioning out of the foster care system. The study aimed to answer the following questions: how do youth in care identify and define their losses and how do youth in care seek support and cope with their losses. This study was guided by the principles of a grief-informed practice approach and a systems approach informed by Bronfenbrenner’s ecological model to better understand the complexity of losses experienced by youth in care. This study utilized a multiple case study design consisting of young adults, ages 18-21 years old who had aged out or were transitioning out of the foster care system. Methods of data collection included three semi-structured interviews per participant, ranging from 60-90 minutes each over approximately a one-month period. Thematic analysis and case narratives were utilized to explore the loss experiences of the study’s participants. The most prominent losses included loss of people, loss of identity and losses related to moves and transitions. There were many micro, meso and macro factors that exacerbated and compounded loss experiences of the participants resulting in further disenfranchisement. Losses were met with varying levels of support ranging from non-existent and limited to extremely positive and impactful. This study has major practice, policy and research implications for the foster care system that can effectively address loss at the micro, meso and macro levels through a grief-informed approach.
Interpreting Angle Dependent Magnetoresistance in Layered Materials: Application to Cuprates
Creators: name: Musser, Seth
name: Chowdhury, Debanjan
name: Lee, Patrick A.
name: Senthil, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The evolution of the low temperature electronic structure of the cuprate metals from the overdoped to the underdoped side has recently been addressed through Angle-Dependant Magneto-Resistance (ADMR) experiments in La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$. The results show a striking difference between hole dopings $p = 0.24$ and $p = 0.21$ which lie on either side of a putative quantum critical point at intermediate $p$. Motivated by this, we here study the theory of ADMR in correlated layered materials, paying special attention to the role of angle dependent quasiparticle weights $Z_{\mathbf{k}}$. Such a $Z_{\mathbf{k}}$ is expected to characterize a number of popular models of the cuprate materials, particularly when underdoped. Further, in the limit of weak interlayer hopping the quasiparticle weight will affect the $c$-axis transport measured in ADMR experiments. We show that proper inclusion of the quasiparticle weight does not support an interpretation of the data in terms of a $(π, π)$ spin density wave ordered state, in agreement with the lack of direct evidence for such order. We show that a simple model of Fermi surface reconfiguring across a van Hove point captures many of the striking differences seen between $p = 0.21$ and $p = 0.24$. We comment on why such a model may be appropriate for interpreting the ADMR data, despite having a large Fermi surface at $p = 0.21$, seemingly in contradiction with other evidence for a small Fermi surafce at that doping level.
description: 14 pages, 9 figures
Pseudo-spontaneous $U(1)$ Symmetry Breaking in Hydrodynamics and Holography
Creators: name: Ammon, Martin
name: Arean, Daniel
name: Baggioli, Matteo
name: Gray, Seán
name: Grieninger, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the low-energy dynamics of systems with pseudo-spontaneously broken $U(1)$ symmetry and Goldstone phase relaxation. We construct a hydrodynamic framework which is able to capture these, in principle independent, effects. We consider two generalisations of the standard holographic superfluid model by adding an explicit breaking of the $U(1)$ symmetry by either sourcing the charged bulk scalar or by introducing an explicit mass term for the bulk gauge field. We find agreement between the hydrodynamic dispersion relations and the quasi-normal modes of both holographic models. We verify that phase relaxation arises only due to the breaking of the inherent Goldstone shift symmetry. The interplay of a weak explicit breaking of the $U(1)$ and phase relaxation renders the DC electric conductivity finite but does not result in a Drude-like peak. In this scenario we show the validity of a universal relation, found in the context of translational symmetry breaking, between the phase relaxation rate, the mass of the pseudo-Goldstone and the Goldstone diffusivity.
description: v2: added references and appendix C Numerical Methods; matches version published in JHEP; 23 + 4 pages; 11 figures
Are Front-line Service Occupations Transitional or Dead-end? The Case of Waiters and Waitresses
Creators: name: King, Lindsey M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Two streams of literature portray waiting tables as either transitional or dead-end. The flexibility of serving jobs enables students to combine work and school, yet the lack of mobility opportunities means most movement is lateral, from one service occupation to another. Using matched CPS data, this paper employs logistic regression to analyze movement out of serving and into another service occupation, an unrelated occupation, or unemployment. While gender is related to lateral mobility, it fails to predict movement into unrelated occupations or unemployment. Education, conversely, has little influence on lateral mobility, but influences movement into unrelated occupations or unemployment.
Stochastic Thermodynamics of a Particle in a Box
Creators: name: Gong, Zongping
name: Lan, Yueheng
name: Quan, H. T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The piston system (particles in a box) is the simplest and paradigmatic model in traditional thermodynamics. However, the recently established framework of stochastic thermodynamics (ST) fails to apply to this model system due to the embedded singularity in the potential. In this Letter we study the stochastic thermodynamics of a particle in a box by adopting a novel coordinate transformation technique. Through comparing with the exact solution of a breathing harmonic oscillator, we obtain analytical results of work distribution for an arbitrary protocol in the linear response regime, and verify various predictions of the Fluctuation-Dissipation Relation. When applying to the Brownian Szilard's engine model, we obtain the optimal protocol $λ_t = λ_0 2^{t/τ}$ for a given sufficiently long total time $τ$. Our study not only establishes a paradigm for studying ST of a particle in a box, but also bridges the long-standing gap in the development of ST.
description: 6+3 pages, 3+2 figures
Yang-Mills Instanton Sheaves
Creators: name: Lai, Sheng-Hong
name: Lee, Jen-Chi
name: Tsai, I-Hsun
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The SL(2,C) Yang-Mills instanton solutions constructed recently by the biquaternion method were shown to satisfy the complex version of the ADHM equations and the Monad construction. Moreover, we discover that, in addition to the holomorphic vector bundles on CP^3 similar to the case of SU(2) ADHM construction, the SL(2,C) instanton solutions can be used to explicitly construct instanton sheaves on CP^3. Presumably, the existence of these instanton sheaves is related to the singularities of the SL(2,C) instantons on S^4 which do not exist for SU(2) instantons.
description: 31 pages, no figure. v2: 32 pages,typos corrected. arXiv admin note: text overlap with arXiv:1412.1360. v3 typos corrected. to be published in Ann. Phys. v4 typos corrected. v5 : typos in Eqs.(4.76b),(4.79),(4.81) and (4.82c) corrected. v6 : The appendix was misleading and thus removed
Blunting Lances and Razing Towers: Masculine Performance and Early Tudor Reforms
Creators: name: Burt, Jacob
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: This study examines the effects of early Tudor reforms on the traditional models of masculinity of the sixteenth-century English nobility. It traces the origins of those models of proper manhood in literature and chronicle accounts, and then examines how those models were subtly refigured by the attempts of Henry VII and Henry VIII to control tournaments and castle building, two stages upon which nobles could perform their masculinity. The study finds that by stressing opulence over martiality in both cases, and by restricting the use of martial imagery to no other person but the crown, the Tudor kings contributed to an environment of change that allowed new models of masculinity, and in particular that of the polite gentleman, to develop.
Identification and Estimation of Causal Effects with Outcomes Truncated by Death
Creators: name: Wang, Linbo
name: Zhou, Xiao-Hua
name: Richardson, Thomas S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: It is common in medical studies that the outcome of interest is truncated by death, meaning that a subject has died before the outcome could be measured. In this case, restricted analysis among survivors may be subject to selection bias. Hence, it is of interest to estimate the survivor average causal effect, defined as the average causal effect among the subgroup consisting of subjects who would survive under either exposure. In this paper, we consider the identification and estimation problems of the survivor average causal effect. We propose to use a substitution variable in place of the latent membership in the always-survivor group. The identification conditions required for a substitution variable are conceptually similar to conditions for a conditional instrumental variable, and may apply to both randomized and observational studies. We show that the survivor average causal effect is identifiable with use of such a substitution variable, and propose novel model parameterizations for estimation of the survivor average causal effect under our identification assumptions. Our approaches are illustrated via simulation studies and a data analysis.
description: Correct a typo in equation (8)
MPEC 2023-F134 : DAILY ORBIT UPDATE (2023 March 25)
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.
Essays on Retail Operations Management
Creators: name: Lee, Hyun Seok
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Under the competitive nature, retailers need to consider numerous aspects to make better operational decisions. Retailers should understand customers’ needs to provide better service; have the right amount of labor to match supply with demand; and anticipate investors’ responses on the announcement of revealing private information such as building excess inventory to maximize retailers’ objective. This dissertation empirically examines these three aspects – customer behavior, labor scheduling, and excess inventory announcement where there appears to be limited empirical research in the literature. I utilize individual retailer’s micro-level proprietary data across multiple stores as well as publicly available firm-level financial data for multiple retailers. In the first essay, I identify a new phenomenon called thwarting behavior, defined as a systematic change in customers’ behavior when they experience congestion that imposes negative externalities on other customers. I provide empirical evidence for the thwarting behavior by analyzing archival data obtained from a retailer and by conducting a field study where I observe customer directly. I then quantify its impact on sales drop by running a field experiment. In the second essay, I examine the impact of incentives for store managers on their labor scheduling decisions. I find empirical evidence that incentive improves outcomes of store managers’ labor scheduling decisions and this finding is mainly driven by effort effect rather than selection mechanism. I also find that the financial incentives have differential impact on underlying decisions that led to the labor scheduling outcomes such as forecasting, labor planning, and execution. In the third essay, I analyze the determinants of excess inventory announcement and the stock market reaction to the announcement in the U.S. retail sector. I find that operationally competent retailers, measured by total factor productivity, have a lower probability of announcing excess inventory in the following year. In addition, the stock market penalizes excess inventory announcements made by operationally competent retailers more severely than those made by their less competent peers. Finally, providing action information, which the firm has taken or plans to take to deal with excess inventory, moderates the negative association between firm’s operational competence and abnormal returns due to the announcement.
THE SOCIAL CONSTRUCTION OF VIRTUOSITY: MUSICAL LABOR AND THE VALUATION OF SKILL IN THE AGE OF ELECTRONIC MEDIA
Creators: name: VanderHamm, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: The central argument of this dissertation is that virtuosity is a socially constructed phenomenon. It does not reside solely in the bodies of performers, nor in the opinions of listeners (whether lay listeners or professional critics), nor the works of composers. Instead, virtuosity occurs within the relationships that connect these various actors, and understanding it requires attending to these relationships as well as the values that shape the cultural and subcultural contexts in which they take place. I explore the social construction of virtuosity through three case studies that demonstrate how different understandings of skill are formed and made apparent through performance, discourse, and media. Each traces how electronic media shape the contexts of virtuosity and the modes of presentation and attention that give rise to it. Because these case studies vary widely in genre and historical era, the specific methods and materials employed in each vary as well. I draw broadly on archival, ethnographic, and media sources to explore how virtuosity is constructed in its particular time and place. The first case study considers virtuosity from the disciplinary viewpoint of disability studies, exploring how bodily difference in the forms of disability and gender contributes to the construction of virtuosity. I argue that virtuosity and disability are similar, both departures from normative embodiment that are intensely personal yet irreducibly social. The second case study considers the construction of “downhome” virtuosity in the early country music radio broadcasts of the 1930s. The third deals with the cosmopolitan virtuosity of Ravi Shankar and Yehudi Menuhin and the ways that skill and cross-cultural adaptability become both especially prized and mutually dependent. By arguing that virtuosity is not a simple fact about a performer’s body that audiences encounter but a social experience that they help construct, I foreground the cultural performance of value within virtuosity. Even in the mediated listening of the twentieth and twenty-first centuries, many people continue to value music not as an independent “sonorous object,” but as a particular type of human labor that performs a confluence of values through which they experience the world and develop a sense of self.
Electrophoresis of metal-dielectric Janus particles with dipolar director symmetry in nematic liquid crystals
Creators: name: Sahu, Dinesh Kumar
name: Dhara, Surajit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study electrophoretic mobility of metal-dielectric Janus particles with dipolar director profile in two nematic liquid crystals (LCs) having same (positive) conductivity anisotropy and opposite dielectric anisotropy. The applied ac electric field is parallel and perpendicular to the director for the positive and negative dielectric anisotropy LCs, respectively. The velocity of the Janus particles in both LCs is significantly higher than that of the non-Janus particles. We map the electroosmotic flow fields surrounding the particles using microparticle image velocimetry ($μ$-PIV) and show that the flows on the metal hemisphere is stronger than that on the dielectric hemisphere and the pumping of LC along the direction of motion of the Janus particles is more than that of the non-Janus particles. For a given liquid crystal, particles with asymmetric surface properties is useful for enhancing their electrophoretic mobility and activity.
description: 6 pages, 6 figures
A data-driven dynamic nonlocal subgrid-scale model for turbulent flows
Creators: name: Seyedi, S. Hadi
name: Zayernouri, Mohsen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We developed a novel autonomously dynamic nonlocal turbulence model for the large and very large eddy simulation (LES, VLES) of the homogeneous isotropic turbulent flows (HIT). The model is based on a generalized (integer-to-noninteger) order Laplacian of the filtered velocity field, and a novel dynamic model has been formulated to avoid the need for tuning the model constant. Three data-driven approaches were introduced for the determination of the fractional-order to have a model which is totally free of any tuning parameter. Our analysis includes both the $\textit{a priori}$ and the $\textit{a posteriori}$ tests. In the former test, using a high-fidelity and well-resolved dataset from direct numerical simulations (DNS), we computed the correlation coefficients for the stress components of the subgrid-scale (SGS) stress tensor and the one we get directly from the DNS results. Moreover, we compared the probability density function of the ensemble-averaged SGS forces for different filter sizes. In the latter, we employed our new model along with other conventional models including static and dynamic Smagorinsky into our pseudo-spectral solver and tested the final predicted quantities. The results of the newly developed model exhibit an expressive agreement with the ground-truth DNS results in all components of the SGS stress and forces. Also, the model exhibits promising results in the VLES region as well as the LES region, which could be remarkably important for the cost-efficient nonlocal turbulence modelings e.g., in meteorological and environmental applications.
description: 26 pages, 10 figures
Oncotripsy: Targeting cancer cells selectively via resonant harmonic excitation
Creators: name: Heyden, Stefanie
name: Ortiz, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigate a method of selectively targeting cancer cells by means of ultrasound harmonic excitation at their resonance frequency, which we refer to as oncotripsy. The geometric model of the cells takes into account the cytoplasm, nucleus and nucleolus, as well as the plasma membrane and nuclear envelope. Material properties are varied within a pathophysiologically-relevant range. A first modal analysis reveals the existence of a spectral gap between the natural frequencies and, most importantly, resonant growth rates of healthy and cancerous cells. The results of the modal analysis are verified by simulating the fully-nonlinear transient response of healthy and cancerous cells at resonance. The fully nonlinear analysis confirms that cancerous cells can be selectively taken to lysis by the application of carefully tuned ultrasound harmonic excitation while simultaneously leaving healthy cells intact.
description: 22 pages
Aria Duetto à 5 in Discante : Duo de l'ésclave ou le marin généreux : "Dans mon Coeur quel feux Circule"
Dans mon Coeur quel feux Circule
L' esclave ou Le marin généreux
Creators: name: Piccinni, Niccolò
Publisher: name: [s.n.]
Year: 1764

description: Stimmen: 2 Soprane ohne Text + unvollst. Violine I auf 2 Systemen (piccolo partitione) ; 2 Soprane (Citronelli + il capitana [Piratino]) (duo) ; Violine I (violino primo) ; Violine II (violino secondo) ; Bassinstrument (basso)
description: de monsieur Piccini
description: Aus der Oper (Intermezzo) "L'esclave ou Le marin généreux"
description: Französisch
description: Verzeichnung=Description=Inventaire 2009 Übernahme Rekatalogis. AK UB durch Medea 2002-2005
description: Verzeichnung=Description=Inventaire Oktober 2021 HAN-Katalogisierungsregeln jpl
Mathematically successful Latina and Latino students: stressors and supports
Creators: name: Gordon, Evelyn M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: This study explores the school experiences of six mathematically successful Latina and Latino middle school students. I examined each student's experiences in depth and identified commonalities and differences among the students using qualitative research methods and a comparative case study design. I used a critical multiculturalism perspective that related individual experiences to broader societal movements and incorporated an understanding of oppressed peoples as strong, resourceful, and resilient. Resilience theory as described by Benard provided a lens for examining the personal strengths and the family, school and community resources that support the students' success. I identified ten stressors that were shared by at least two students: poverty, limited academic support at home, limited or strained parent-child relationships, immigration and separation from extended family, learning English, school changes, negative pressure from peers, difficulty with teachers, racism, and pressure to succeed. Students exhibited many personal characteristics of resilient people identified by Benard. Caring relationships and opportunities to participate and contribute were protective factors at home and at school. High expectations were a protective factor at home and were a protective factor in mathematics class for three students; the teacher of the other three students did not hold high expectations for them. I identified three additional categories that may have contributed to students' success but are not part of Benard's resilience model: Responsibility, Family Attitudes Toward School and Mathematics, and Modeling Resilience and Deliberate Actions.
Palynology of late-Holocene agricultural features at Kuk Swamp, Papua New Guinea
Creators: name: O'Donnell, Shawn
Publisher: name: Zenodo
Year: 2009
Subjects: Sahul
Radiocarbon
Palaeoenvironment
SahulChar
OCTOPUS database

description: The Holocene sequence of buried agricultural earthworks at Kuk Swamp in the highlands of Papua New Guinea is of global theoretical interest to both archaeologists and palaeoecologists. The discovery of what seems to represent an independent hearth of agricultural emergence and intensification within the highland valleys of Papua New Guinea, which is argued to be of equal antiquity to that of anywhere else in the world (Golson and Hughes, 1980), has, in part, fuelled the questioning of the applicability within the tropics of theoretical frameworks pertaining to the origins of agriculture derived from work on sites associated with temperate zone subsistence systems. This questioning derives from: the interpretation that this hearth of agriculture does not appear to have lead to exponentially expanding populations prone to a pressure to disperse in search of more land (Harris, 2002), but, rather, archaeological and palaeoecological examinations of the site lend to an interpretation of periodic intensification leading to environmental degradation which fuelled technological innovation thus spurring continued degradation within relative spatial confinement.
description: Master's thesis. Shawn O'Donnell (u4606935); ARCH 8031; M. Arch.Sci. 2009
Aria Duetto à 6 in Discante : Del'Esclave ou le Marin Genereux : "ll faut se rendre! Voilà ma Main"
Il faut se rendre! Voilà ma Main
L' esclave ou Le marin généreux
Creators: name: Piccinni, Niccolò
Publisher: name: [s.n.]
Year: 1764

description: Stimmen: 2 Soprane (Zulime + Lelio) (duo) ; Violine I (violino primo) ; Violine II (violino secondo) ; Viola (alto viola) ; Bassinstrument (basso) ; Umschlag
description: Del Signore Piccini
description: Aus der Oper (Intermezzo) "L'esclave ou Le marin généreux"
description: Französisch
description: Verzeichnung=Description=Inventaire 2009 Übernahme Rekatalogis. AK UB durch Medea 2002-2005
description: Verzeichnung=Description=Inventaire Oktober 2021 HAN-Katalogisierungsregeln jpl
Aria Quintetto à 12 : dell'Opperetta della buona Figliola : "Si Signora di la Su! Si è Veduto"
Sì signora di lá su
La  buona Figliola
Creators: name: Piccinni, Niccolò
name: Goldoni, Carlo
Publisher: name: [s.n.]
Year: 1760

description: Stimmen: 2 Soprane (Sandrina + Paoluccia) (due soprani) (die erste drei Takte mit unterlegtem Bassinstrument) ; Sopran (Cecchina) (soprano) ; Tenor (marchese) (tenore) ; Bass (Tagliaferro) (basso) ; Violine I (violino primo) ; Violine II (violino secondo) ; Bassinstrument (basso) ; Oboe I (oboe primo) ; Oboe II (oboe secondo) ; Horn I (corno primo in A) ; Horn I (im Altschlüssel notiert) (corno primo in alto viola) ; Horn II (corno secondo in A) ; Horn II (im Altschlüssel notiert) (corno secondo in alto viola) ; Umschlag
description: Del Signore Piccini ; [Text von Carlo Goldoni]
description: Aus der Oper "La buona figliuola" (1760)
description: Italienisch
description: Verzeichnung=Description=Inventaire 2009 Übernahme Rekatalogis. AK UB durch Medea 2002-2005
description: Verzeichnung=Description=Inventaire Oktober 2021 HAN-Katalogisierungsregeln jpl
The Reconstruction of Quaternary Vegetation and Climate on King Island, Bass Strait, Australia
Creators: name: D'Costa, Donna Marie
Publisher: name: Zenodo
Year: 1997
Subjects: Sahul
Radiocarbon
Palaeoenvironment
SahulChar
OCTOPUS database

description: Abstract. Analyses of pollen, sediments, shells and bones are used to reconstruct palaeoenvironments at Egg Lagoon and Lake Flannigan, northern King Island, Bass Strait. A recent pollen database is also established for south-eastern Australia to provide a firmer basis for the interpretation of the palaeoenvironmental records. Refined climatic reconstructions from the Egg Lagoon record are based on comparisons with modem analogues represented in the recent pollen database. This procedure allows some suggestions as to likely annual temperatures and precipitation levels. A range of dating techniques including radiocarbon, thermoluminescence, uranium/thorium, electron spin resonance and amino acid racemisation, has been applied to the Egg Lagoon sequence. Despite the application of a variety of methods, a realistic chronology for much of the Egg Lagoon sequence could not be constructed on this basis alone. Instead a preferred chronology for the Egg Lagoon record was established by reference to oxygen isotopic chronology, palaeoclimatic estimates and pollen evidence from other long records in south-eastern Australia and supported, in general terms, by the dating results. ... [_truncated_]
description: Thesis submitted for the degree of Doctor of Philosophy in the Department of Geography and Environmental Science, Monash University Clayton, Victoria, Australia (303 p)