cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sonnenfleckenzeichnung Nr. 22076.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.11.1965, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
General-Purpose User Modeling with Behavioral Logs: A Snapchat Case Study
Creators: name: Fang, Qixiang
name: Zhou, Zhihan
name: Barbieri, Francesco
name: Liu, Yozen
name: Neves, Leonardo
name: Nguyen, Dong
name: Oberski, Daniel L.
name: Bos, Maarten W.
name: Dotsch, Ron
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Learning general-purpose user representations based on user behavioral logs is an increasingly popular user modeling approach. It benefits from easily available, privacy-friendly yet expressive data, and does not require extensive re-tuning of the upstream user model for different downstream tasks. While this approach has shown promise in search engines and e-commerce applications, its fit for instant messaging platforms, a cornerstone of modern digital communication, remains largely uncharted. We explore this research gap using Snapchat data as a case study. Specifically, we implement a Transformer-based user model with customized training objectives and show that the model can produce high-quality user representations across a broad range of evaluation tasks, among which we introduce three new downstream tasks that concern pivotal topics in user research: user safety, engagement and churn. We also tackle the challenge of efficient extrapolation of long sequences at inference time, by applying a novel positional encoding method.
description: SIGIR 2024
Storying academic spaces: reflections, narratives, and interpretations of Tongan students' educational experiences
Creators: name: Saltiban, Belinda 'Otukolo
Publisher: name: University of Utah
Year: 2012
Subjects: Critical race theory
Education
Pacific islanders
Talanoa
Time and space theory of reality
Tongan students

description: Responding to concerns about the underrepresentation of Pacific Islander students in higher education, my study specifically focused on Tongan students in the state of Utah who illuminated alternative perspectives associated with the conditions, constraints, and relational practices that impacted their educational careers. The aim of this research was to create a space for Tongan students to give voice to their educational experiences, to narrate Tongan ways of knowing and being and its influence on their current ways of knowing and being, and to reflect on the role and importance of relationship building along their educational journey. Drawing on research methods including individual talanoa interactions (which is similar to informal individual dialogues), and a focus group (largely based on talanoa in a group setting), the voices of Tongan students have been imperative in elucidating meaningful insights that allow us to move beyond the impasse of confining boundaries to grapple with the intricacies of tā (time) and vā (space). Grounded in my theoretical commitments to Time and Space (Tā and Vā) Theory of Reality-shaped by the understanding that space, or vā, is relational, mutual, and reciprocal and time (tā) is extended to mean beats, rhythms, and movements-and Critical Race Theory (to critique the saliency of race in the US), this study allowed me to critically contextualize interconnected relationships, ethics, and tā-vā choreographies that Tongan students perform, engage, and negotiate (both within the home and school settings) when considering the possibility of higher education.
Sonnenfleckenzeichnung Nr. 21971.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.06.1965, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
The Role of Caenorhabditis Elegans Dicer in Endogenous Small RNA Silencing Pathways
Creators: name: Welker, Noah Christopher
Publisher: name: University of Utah
Year: 2012
Subjects: Small Interfering RNA
Caenorhabditis elegans

description: RNA interference (RNAi) was originally identified as a conserved  biological response to exogenous double-stranded RNA (dsRNA). During this  response, dsRNA is processed into 21-23 nucleotide small interfering RNAs  (siRNAs) by the ribonuclease III enzyme Dicer. siRNAs produced by this pathway  initiate the sequence specific degradation of their cognate messenger RNAs  (mRNAs). While RNAi was originally discovered as a response to exogenous  dsRNA, during the time of my dissertation research, it has become clear that  endogenous dsRNA is responsible for regulating many biological processes.  Dicer is also responsible for processing endogenous dsRNA in the form of micro-  RNAs (miRNAs) and many endogenous-siRNAs (endo-siRNAs).  The effects that Dicer dependent endo-siRNAs and miRNAs have on their  cognate mRNAs was unclear prior to the work described in this dissertation. In  Chapter 2, I describe my work to characterize how transcripts are misregulated in  C. elegans harboring a mutation in the dcr-1 gene. I found that Dicer is  responsible for regulating a large number of transcripts including known and  predicted miRNA targets. Among the misregulated transcripts in dcr-1 (-/-) was an  enrichment for genes involved in C. elegans innate immunity. This later finding  prompted me to investigate the role of Dicer's helicase domain, particularly in light of this domain's similarity to RIG-I and MDA-5, two mammalian helicases  involved in innate immunity.  In Chapter 3,1 describe experiments in which I reintroduced the dcr-1  gene with targeted mutations in the helicase domain into dcr-1 (-/-) C. elegans.  Reintroduction of either wild-type (WT) or helicase mutant dcr-1 rescued the  fertility defects exhibited in dcr-1 (-/-) animals. Furthermore, I show that dcr-1  helicase mutants have a normal RNAi response following feeding of exogenous  dsRNA. I present deep sequencing data that indicates that while dcr-1 helicase  mutants process miRNAs to WT levels, they are defective for the production  some, but not all, endo-siRNAs. In light of these data, I present a model for Dicer  cleavage in which Dicer acts as a processive translocase to process long dsRNA  to siRNAs. In Chapter 4, I propose experiments to test this model in light of  current literature.
An exploration of emergent themes in women's existential experience of childbearing.
Creators: name: Grossman, Beth-Anne
Publisher: name: University of Utah
Year: 2012
Subjects: Childbirth
Maternity Nursing

description: The purpose of this study was to explore psychological, sociocultural and physiological aspects of individual women's first experience of childbearing.  A secondary purpose of this study was to examine the utilization of an unscheduled semi structured interview as a strategy for the clinical assessment of childbearing women.  The investigation was an exploratory study of six nulliparous women who were attaining prenatal care at a health center in Oregon.  The women were interviewed and medical and prenatal histories were attained when they were 35-40 weeks pregnant.  This allowed for the opportunity to meet for several interviews before delivery.  After the interviews, five of the women did drawings of selected areas of their experiences of pregnancy.  Following labor and delivery of each subject, the investigator reviewed and recorded the labor and delivery records and the newborn charts.  Field notes were recorded on the interviews and on the participant observations of one of the women in labor.  Thirty-four content categories emerged from the analysis.  These categories were then described in narrative form and consolidated into seven domains:  psychological aspects, symptomatology, culturological dimension, relationships, preparations for the future, beliefs about problem causation, and fantasies.  Fourteen specific themes emerged from these content areas.  Individual case profiles were described.  The particular themes which arose for each subject during the study were identified.  There appeared to be a relationship between the emergent themes and obstetrical and neonatal outcomes.  Due to the exploratory nature of the study, and the limited sample size, no definite conclusions could be made from the information attained.  However, several interesting perspectives on the clinical implications of such a study evolved.  Further study is indicated for additional exploration of the themes in women's experiences of childbearing.
Clustering of dark matter in the cosmic web as a probe of massive neutrinos
Creators: name: Khoshtinat, Mohadese
name: Ansarifard, Mohammad
name: Hassani, Farbod
name: Baghram, Shant
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The large-scale structure of the Universe is distributed in a cosmic web. Studying the distribution and clustering of dark matter particles and halos may open up a new horizon for studying the physics of the dark Universe. In this work, we investigate the nearest neighbour statistics and spherical contact function in cosmological models with massive neutrinos. For this task, we use the relativistic N-body code, gevolution and study particle snapshots at three different redshifts. In each snapshot, we find the halos and evaluate the letter functions for them. We show that a generic behaviour can be found in the nearest neighbour, $G(r)$, and spherical contact functions, $F(r)$, which makes these statistics promising tools to constrain the total neutrino mass.
description: 10 pages, 8 figures, 2 tables, 2 appendices. Published in MNRAS
Postfeminism in female team superhero comic books
Creators: name: Sawyer, Elliott Alexander
Publisher: name: University of Utah
Year: 2014
Subjects: Comic books
Cultural studies
Feminism
Postfeminism
Superhero

description: Comic books are beginning to be recognized for their impact on society because they inform, channel, and critique cultural norms. This thesis investigates how comic books interact and forward postfeminism. Specifically, this thesis explores the ways postfeminism interjects itself into female superhero team comic books. These comics, with their rosters of only women, provide unique perspectives on how women are represented in comic books. Additionally, the comics give insight into how women bond with one another in a popular culture text. The comics critiqued herein focus on transferring postfeminist ideals in a team format to readers, where the possibilities for representing powerful connections between women are lost. Postfeminist characteristics of consumption, sexual freedom, and sexual objectification are forwarded in the comic books, while also promoting aspects of racism. Through utilizing the methodologies of close textual and close visual analysis to study the team comics, the moments and arguments of postfeminism in the comic books come to light. Furthermore, close textual analysis is utilized to understand the critical response to the comic books, and how that response often overlooks aspects of postfeminism. The comic book companies argue that women are receiving fairer representation because they are shown in teams, but the team format provides a greater platform to further objectify women. Overall, the comic books argue the further marginalizing of women in popular culture through the ideals of postfeminism.
Sonnenfleckenzeichnung Nr. 21998.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.07.1965, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
In vivo construction of a nanoreactor using charge complementarity
Creators: name: Yang, Seung Ook
Publisher: name: University of Utah
Year: 2013
Subjects: Capsid
Charge Complementarity
Encapsulation
Esterase

description: Subcellular protein compartmentalization is one of the strategies that nature has adapted for various functions, such as storage and protection of cargo molecules as well as regulation of chemical reactions. There is a growing interest among nanotechnologists to utilize protein capsids for encapsulating guest molecules in bioimaging, drug-delivery, nanoreactors, etc. To date, many viral and nonviral protein capsids have been investigated for those applications. We used an engineered an Aquifex aeolicus lumazine synthase variant (AaLS-13) as a platform to encapsulate a guest enzyme by charge complementarity. The enzyme, esterase Est55 bearing a C-terminal deca-arginine (R10) tag, was placed in the lumen of the AaLS-13 during the self-assembly of the capsid when co-produced in E. coli. This encapsulated enzyme was characterized by colorimetric assay with the substrate, pnitrophenyl acetate. Comparison of the specific esterase activity between the empty capsid and the enzyme-loaded capsid showed 64-fold higher specific activity in the enzyme-loaded capsid compared to the empty capsid. Mass spectrometry and proteomics analysis verified that the presence of Est55-R10 in a sample of purified AaLS-13 that had been co-produced with the esterase. Capsid loading was estimated by esterase activity measurements and SDS-PAGE analysis. Both methods gave a loading estimate of one esterase molecule per eleven capsids. We plan to improve capsid loading using "supercharged" esterases. We also plan to investigate the porosity of the capsid because size limit for small molecule diffusion in and out of capsid is not well defined. Esterase substrates of various sizes will be applied to both esterase-loaded capsid and free esterase to determine the molecular weight cut-off of the AaLS-13 capsid.
Hofstadter-Toda spectral duality and quantum groups
Creators: name: Marra, Pasquale
name: Proietti, Valerio
name: Sheng, Xiaobing
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Hofstadter model allows to describe and understand several phenomena in condensed matter such as the quantum Hall effect, Anderson localization, charge pumping, and flat-bands in quasiperiodic structures, and is a rare example of fractality in the quantum world. An apparently unrelated system, the relativistic Toda lattice, has been extensively studied in the context of complex nonlinear dynamics, and more recently for its connection to supersymmetric Yang-Mills theories and topological string theories on Calabi-Yau manifolds in high-energy physics. Here we discuss a recently discovered spectral relationship between the Hofstadter model and the relativistic Toda lattice which has been later conjectured to be related to the Langlands duality of quantum groups. Moreover, by employing similarity transformations compatible with the quantum group structure, we establish a formula parametrizing the energy spectrum of the Hofstadter model in terms of elementary symmetric polynomials and Chebyshev polynomials. The main tools used are the spectral duality of tridiagonal matrices and the representation theory of the elementary quantum group.
description: Accepted on Journal of Mathematical Physics, 15 pages, no figures, reference added
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.11.1965, als Blatt eröffnet dank auswärtiger Beobachtungen, ausgewertet in Zürich
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung bzw. Auswertung aufgrund auswärtiger Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen direkt auf dem Vordruck, erstellt durch Mitarbeitende der Eidgenössischen Sternwarte Zürich
Trapped atoms and superradiance on an integrated nanophotonic microring circuit
Creators: name: Zhou, Xinchao
name: Tamura, Hikaru
name: Chang, Tzu-Han
name: Hung, Chen-Lung
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Interfacing cold atoms with integrated nanophotonic devices could offer new paradigms for engineering atom-light interactions and provide a potentially scalable route for quantum sensing, metrology, and quantum information processing. However, it remains a challenging task to efficiently trap a large ensemble of cold atoms on an integrated nanophotonic circuit. Here, we demonstrate direct loading of an ensemble of up to 70 atoms into an optical microtrap on a nanophotonic microring circuit. Efficient trap loading is achieved by employing degenerate Raman-sideband cooling in the microtrap, where a built-in spin-motion coupling arises directly from the vector light shift of the evanescent field potential on a microring. Atoms are cooled into the trap via optical pumping with a single free space beam. We have achieved a trap lifetime approaching 700ms under continuous cooling. We show that the trapped atoms display large cooperative coupling and superradiant decay into a whispering-gallery mode of the microring resonator, holding promise for explorations of new collective effects. Our technique can be extended to trapping a large ensemble of cold atoms on nanophotonic circuits for various quantum applications.
description: 11 pages, 9 figures
Reoxidation kinetics of flash reduced iron particles relevant to a novel flash ironmaking process
Creators: name: Yuan, Zhixue
Publisher: name: University of Utah
Year: 2015
Subjects: Direct reduction
Ironmaking
Kinetics
Reoxidation

description: A novel flash ironmaking process based on hydrogen containing reduction gases is under development at the University of Utah. This process will directly reduce fine iron oxide concentrate particles in suspension in a flash reactor. The goal of this work was to study the possibility of reoxidation of iron particles in various gas mixtures from the kinetic point of view. The last stage of hydrogen reduction of iron oxide, i.e., the reduction of wustite, is limited by equilibrium. As the gas particle mixture cools down in the lower part of the flash reactor, the reoxidation of iron could take place because of the decreasing equilibrium constant and the high reactivity of the freshly reduced fine iron particles. The effects of temperature (823 - 973 K) and H2O partial pressure (40 - 100 pct.) on the reoxidation rate were examined. The nucleation and growth model was shown to best describe the reoxidation kinetics. Pressure dependence is first order with respect to water vapor, and the activation energy is 146 kJ/mol. A complete rate equation that adequately represents the experimental data was developed. For oxidation in O2-N2 gas mixtures, effects of temperature (673 - 873 K) and O2 partial pressure (5 - 21 pct.) were studied and the nucleation and growth model was used to describe the initial period of oxidation. Pressure dependence is first order with respect to oxygen and the activation energy is 14.4 kJ/mol. The oxidation in pure CO2 gas was investigated in the temperature range of 873 - 1073 K and the results imply that the oxidation will be negligible in the flash reduction process where CO2 from partial combustion of natural gas with oxygen accounts for less than 10% in the gas mixture.
A Unified Industrial Large Knowledge Model Framework in Industry 4.0 and Smart Manufacturing
Creators: name: Lee, Jay
name: Su, Hanqi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The recent emergence of large language models (LLMs) demonstrates the potential for artificial general intelligence, revealing new opportunities in Industry 4.0 and smart manufacturing. However, a notable gap exists in applying these LLMs in industry, primarily due to their training on general knowledge rather than domain-specific knowledge. Such specialized domain knowledge is vital for effectively addressing the complex needs of industrial applications. To bridge this gap, this paper proposes a unified industrial large knowledge model (ILKM) framework, emphasizing its potential to revolutionize future industries. In addition, ILKMs and LLMs are compared from eight perspectives. Finally, the "6S Principle" is proposed as the guideline for ILKM development, and several potential opportunities are highlighted for ILKM deployment in Industry 4.0 and smart manufacturing.
description: The paper submitted to the International Journal of AI for Materials and Design (IJAMD) has been accepted and is now available online
Random testing of open source C compilers
Creators: name: Yang, Xuejun
Publisher: name: University of Utah
Year: 2015
Subjects: Compiler bugs
Compilers
Csmith
Gcc
llvm
Random testing

description: Compilers are indispensable tools to developers. We expect them to be correct. However, compiler correctness is very hard to be reasoned about. This can be partly explained by the daunting complexity of compilers. In this dissertation, I will explain how we constructed a random program generator, Csmith, and used it to find hundreds of bugs in strong open source compilers such as the GNU Compiler Collection (GCC) and the LLVM Compiler Infrastructure (LLVM). The success of Csmith depends on its ability of being expressive and unambiguous at the same time. Csmith is composed of a code generator and a GTAV (Generation-Time Analysis and Validation) engine. They work interactively to produce expressive yet unambiguous random programs. The expressiveness of Csmith is attributed to the code generator, while the unambiguity is assured by GTAV. GTAV performs program analyses, such as points-to analysis and effect analysis, efficiently to avoid ambiguities caused by undefined behaviors or unspecifed behaviors.  During our 4.25 years of testing, Csmith has found over  450 bugs in the GNU Compiler Collection (GCC) and the  LLVM Compiler Infrastructure (LLVM). We analyzed the  bugs by putting them into different categories, studying the root causes, finding their locations in compilers' source code, and evaluating their importance. We believe analysis results are useful to future random testers, as well as compiler writers/users.
3-Dimensional Optical Orthogonal Codes with Ideal Autocorrelation-Bounds and Optimal Constructions
Creators: name: Alderson, Tim L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Several new constructions of 3-dimensional optical orthogonal codes are presented here. In each case the codes have ideal autocorrelation $\mathbf{ λ_a=0} $, and in all but one case a cross correlation of $ \mathbf{λ_c=1} $. All codes produced are optimal with respect to the applicable Johnson bound either presented or developed here. Thus, on one hand the codes are as large as possible, and on the other, the bound(s) are shown to be tight. All codes are constructed by using a particular automorphism (a Singer cycle) of $ \mathbf{ PG(k,q)} $, the finite projective geometry of dimension $ k $ over the field of order $ \mathbf{q} $, or by using an affine analogue in $ AG(k,q) $.
Applying the theory of planned behavior to participation in sustainable tourism certifiation programs
Creators: name: Schultz, Jeremy Ryan
Publisher: name: University of Utah
Year: 2014
Subjects: subject: Certification
subject: Sustainability
subject: Tourism
subject: FOS: Economics and business

description: Sustainability has become an omnipresent concept within our culture and society. The importance of sustainability continues to grow as resources are depleted and cultures are irreparably damaged. The science of sustainability has taken on many forms such as renewable energy sources, transportation systems, political platforms, and sustainable tourism. Within the tourism industry, sustainability is now being manifested through certification programs. These programs allow tourism operators to reduce environmental impacts and incorporate sociocultural considerations into business practices, all the while maintaining, if not improving, the financial status of their businesses. This study examined why Bed and Breakfast (B&B) operators in the United States chose to participate or not in sustainable tourism certification programs. Ajzen's theory of planned behavior was employed to investigate the attitudes, social influence, perceived behavioral control, and belief structures of the B&B operators to further understanding of the behavioral intention of B&B operators and their participation in sustainable tourism certification programs.
Silicon Mie Resonators for Highly Directional Light Emission from monolayer MoS2
Creators: name: Cihan, Ahmet Fatih
name: Curto, Alberto G.
name: Raza, Søren
name: Kik, Pieter G.
name: Brongersma, Mark L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Controlling light emission from quantum emitters has important applications ranging from solid-state lighting and displays to nanoscale single-photon sources. Optical antennas have emerged as promising tools to achieve such control right at the location of the emitter, without the need for bulky, external optics. Semiconductor nanoantennas are particularly practical for this purpose because simple geometries, such as wires and spheres, support multiple, degenerate optical resonances. Here, we start by modifying Mie scattering theory developed for plane wave illumination to describe scattering of dipole emission. We then use this theory and experiments to demonstrate several pathways to achieve control over the directionality, polarization state, and spectral emission that rely on a coherent coupling of an emitting dipole to optical resonances of a Si nanowire. A forward-to-backward ratio of 20 was demonstrated for the electric dipole emission at 680 nm from a monolayer MoS2 by optically coupling it to a Si nanowire.
A two-state Kalman estimator for atomic gravimetry
Creators: name: Jiang, Bo-Nan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a two-state Kalman estimator of gravity acceleration and evaluate its performance by numerical simulations and post-measurement demonstration with real-world atomic gravimetry. We show that the estimator-enhanced gravimetry significantly improves upon both short-term sensitivity and long-term stability. The estimates of gravity acceleration demonstrate a τ^{1/2} feature well under white phase noise in the short term, and continue to improve as τ^{-1/2} or improve faster as τ^{-1} in the long term. This work validates the estimation of gravity acceleration as a key topic for future atomic gravimetry.
description: REVTex 4-1, 7 pages, 5 figures
Aurodicyanide desorption from activated carbon
Creators: name: Bhattacharyya, Dhiman
Publisher: name: University of Utah
Year: 2015
Subjects: Activated carbon
Desorption
Gold cyanide

description: The industrial use of activated carbon for gold adsorption from alkaline cyanide leach solutions has been a major development in gold hydrometallurgy which was commercialized during the last part of the 20th century. In the gold industry, activated carbon is most often used to adsorb gold from dilute alkaline cyanide solutions. The gold is dissolved as the Au(CN)2 - complex and is recovered from the solution by Carbon-in- Pulp (CIP) or Carbon-in-Leach (CIL) processes. Activated carbon loaded with gold must be treated by an elution step to desorb the gold for subsequent recovery. In this way, a smaller volume of higher grade gold solution is produced, suitable for final gold recovery by electrowinning. The gold elution efficiency can be increased by the use of hydro-alcoholic solution and high temperature. The effect of particle size on gold elution has not been studied. In this regard, experiments have been performed with different size fractions of activated carbon to study the stripping characteristics of activated carbon for gold elution. It has been observed that it is difficult to elute gold from fine activated carbon which is quite contrary to fundamental expectations. From a technological point of view, it is necessary to develop improved methods of stripping for enhanced gold recovery from alkaline cyanide solutions. As part of this work, to overcome the problem of gold elution from fine carbon, alternative elution procedures have been developed and discussed. These include, use of hydro-alcoholic solutions, use of vacuum degassing prior to stripping, and application of external pressure. Research on this topic is carried out to enhance the understanding of the science involved in the elution of gold from fine activated carbon. Hence, current research focuses on finding a plausible explanation to explain the difficulty of eluting gold from fine activated carbon. The emphasis of this research is to address the stripping by experimentation and with the aid of computational chemistry tools. Since activated carbon consists of a cryptocrystalline graphitic structure which contributes significantly to gold adsorption, research on HOPG (highly oriented pyrolytic graphite) is in progress to determine the nature of graphite surfaces, their wetting characteristics, and their significance in gold adsorption / desorption from alkaline cyanide solutions. Computational chemistry analysis of adsorbed aurodicyanide anions at graphite surfaces are being done to understand the nature of gold adsorption/desorption from alkaline cyanide solutions by activated carbon. Current results from these surface chemistry studies are used to discuss the state of gold cyanide at activated carbon surfaces and the anomalous elution dependence on particle size.
Sonnenfleckenzeichnung Nr. 22053.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.10.1965, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
Reconstruction of groupoids and C*-rigidity of dynamical systems
Creators: name: Carlsen, Toke Meier
name: Ruiz, Efren
name: Sims, Aidan
name: Tomforde, Mark
Publisher: name: arXiv
Year: 2017
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 46L05 (primary), 20M20, 22A22, 37B05, 37B10, 46L55

description: We show how to construct a graded locally compact Hausdorff étale groupoid from a C*-algebra carrying a coaction of a discrete group, together with a suitable abelian subalgebra. We call this groupoid the extended Weyl groupoid. When the coaction is trivial and the subalgebra is Cartan, our groupoid agrees with Renault's Weyl groupoid. We prove that if G is a second-countable locally compact étale groupoid carrying a grading of a discrete group, and if the interior of the trivially graded isotropy is abelian and torsion free, then the extended Weyl groupoid of its reduced C*-algebra is isomorphic as a graded groupoid to G. In particular, two such groupoids are isomorphic as graded groupoids if and only if there is an equivariant diagonal-preserving isomorphism of their reduced C*-algebras. We introduce graded equivalence of groupoids, and establish that two graded groupoids in which the trivially graded isotropy has torsion-free abelian interior are graded equivalent if and only if there is an equivariant diagonal-preserving Morita equivalence between their reduced C*-algebras. We use these results to establish rigidity results for a number of classes of dynamical systems, including all actions of the natural numbers by local homeomorphisms of locally compact Hausdorff spaces.
description: v2: 45 pages; removed notion of "weakly Cartan subalgebra" as it is equivalent to a sigma-unital abelian subalgebra (see Lemma 4.1) and updated numerous statements accordingly. Thanks to R. Meyer and B. Kwasniewski for pointing this out. Numerous other minor corrections and improvements. This version to appear in Advances in Mathematics
MPEC 2024-M67 : 2017 DB165
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
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.
Optimal Rates for Spectral Algorithms with Least-Squares Regression over Hilbert Spaces
Creators: name: Lin, Junhong
name: Rudi, Alessandro
name: Rosasco, Lorenzo
name: Cevher, Volkan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Functional Analysis (math.FA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we study regression problems over a separable Hilbert space with the square loss, covering non-parametric regression over a reproducing kernel Hilbert space. We investigate a class of spectral/regularized algorithms, including ridge regression, principal component regression, and gradient methods. We prove optimal, high-probability convergence results in terms of variants of norms for the studied algorithms, considering a capacity assumption on the hypothesis space and a general source condition on the target function. Consequently, we obtain almost sure convergence results with optimal rates. Our results improve and generalize previous results, filling a theoretical gap for the non-attainable cases.
description: Updating acknowledgments; Journal version
Sonnenfleckenzeichnung Nr. 22033.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.09.1965, erstellt von Berthold Hermes
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
Visualization of Oxygen Vacancies and Self-doped Ligand Holes in La3Ni2O7-δ
Creators: name: Dong, Zehao
name: Huo, Mengwu
name: Li, Jie
name: Li, Jingyuan
name: Li, Pengcheng
name: Sun, Hualei
name: Lu, Yi
name: Wang, Meng
name: Wang, Yayu
name: Chen, Zhen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The recent discovery of superconductivity in La3Ni2O7-δ under high pressure with a transition temperature around 80 K has sparked extensive experimental and theoretical efforts. Several key questions regarding the pairing mechanism remain to be answered, such as the most relevant atomic orbitals and the role of atomic deficiencies. Here, we develop a new energy-filtered multislice electron ptychography technique, assisted with electron energy loss spectroscopy, to address these critical issues. Oxygen vacancies are directly visualized and are found to primarily occupy the inner apical sites, which have been proposed to be crucial to superconductivity. We precisely determine the nanoscale stoichiometry and its correlation to the oxygen K edge spectra, which reveals a significant inhomogeneity in the oxygen content and electronic structure within the sample. The spectroscopic results also unveil that stoichiometric La3Ni2O7 is in the charge-transfer regime, with holes that are self-doped from Ni sites into O sites. The outer apical oxygen is found to be less relevant to the low-energy physics and can be safely disregarded in theoretical models. These observations will assist in further development and understanding of superconducting nickelate materials. Our imaging technique for quantifying atomic deficiencies can also be widely applied in materials science and condensed matter physics.
description: 24 pages, 4 figures, and 10 supplementary figures
Anti-stigma campaign to increase help-seeking for DNP students with psychological distress
Creators: name: Ducusin, Kimberly
Publisher: name: No Publisher Supplied
Year: 2020

description: Purpose of Project: The purpose of this project is to study how an on-campus anti-stigma campaign about psychological distress (PD) will increase psychological help-seeking in Doctors of Nursing Practice (DNP) students in two months.Methodology: Design: One group pre-/post- surveys to assess perception of psychological help-seeking and stigma. Settings: School of nursing and mental health center at a university in northeastern US. Population: DNP students, which yielded 55 pre- and 57 post-survey sample participants. Intervention: An IRB-approved anti-stigma campaign using daily social media posts and physical flyers posted in nursing buildings. Outcomes measured: Mental health service uptake, attitudes towards help-seeking, perceptions about public stigma related to help-seeking, and Instagram analytics.Results: Mental health service uptake: The mental health center opened one new case/month, and spent 45 minutes more per month providing services. ATTSPPHS-SF: The post-survey group had more positive attitudes toward seeking professional help. SSRPHS: The post-survey group had a greater perception of public stigma towards receiving professional psychological treatment.Instagram analytics: Instagram and Preview mobile applications were used to analyze how others interact with the campaign’s account. The account had 41 followers, 653 likes, a reach of 2,498, and 8,791 impressions.Implications for Practice: Increased help-seeking and reduced rates of PD can have many implications. Clinical practice could have improved performance, increased productivity, and fewer errors. Policy may include supporting students, providing appropriate resources, and enhancing relationships between schools of nursing and mental health centers. They contribute to a healthier nursing workforce, lower absenteeism/attrition, and improved patient outcomes. They also reinforce knowledge about PD. They may lead to better job retention, lower healthcare expenses, and fewer malpractice costs.
Topics in mocho' phonology and morphology
Creators: name: Palosaari, Naomi Elizabeth
Publisher: name: University of Utah
Year: 2012
Subjects: Endangered languages
Indigenous languages
language documentation
Language structure
Mayan languages
Mocho' language

description: This dissertation is a grammatical description of several features of the morphology and phonology of the Mocho' language. Mocho' (Motozintleco) is a Mayan language spoken in the Chiapas region of Mexico near the border of Guatemala. It is moribund, with fewer than 30 remaining speakers, all over the age of 70 and bilingual in Spanish. Mocho' is a language with several features of interest, but which has not yet been the subject of a full linguistic description.  This dissertation, based on data collected during several field trips and supplemented with unpublished data from previous researchers, provides an overview of  the grammatical structure of Mocho'. The topics covered include phonology, loanwords, root structure, derivation and inflection of the different word classes, and important  discourse particles.  Mocho' is of special interest in Mayan linguistics as well as linguistic theory in general for many reasons. For example, Mocho' is one of only four Mayan languages to  develop a tonal contrast; the Mocho' pattern is unique and has developed recently. Mocho' has several grammatical features which are unique in Mayan, including the development of middle voice from Proto-Mayan antipassive marking and the patterning of positionals, negatives, and syntactic markers of direction, location, and motion. Mocho' has a split ergative system, with ergative marking on third persons and nominative-accusative marking on first and second persons. Mocho' also has unique patterns of definiteness and evidentiality. This dissertation provides a description of Mocho' morphological and phonological structure in several areas, including those described above.
Sonnenfleckenzeichnung Nr. 22102.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.12.1965, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1965

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit statistischen Angaben – mit Vermerk der Werte Gr, f und g, wobei die Bestimmung der Fleckenrelativzahl nach wie auf visueller Beobachtung und anderer Instrumentierung beruhte (und dafür das entsprechende Registerblatt (in Teilbestand acht) ausgefüllt wurde). Zusammen mit den täglichen Werten oft Angabe der Resultate der Flächenmessungen der Flecken (F und F -o) in Millionsteln der Scheibe bzw. der Halbkugel
Assessing the potential of low-cost drilling in meeting the MDGs for water supply in Nigeria
Creators: name: Adedotun Adekile
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 90509 Water Resources Engineering
subject: FOS: Civil engineering

description: There has been some concern amongst sector practitioners that Nigeria may not meet the Millennium Development Goals for water supply. According to the WHO/UNICEF Joint Monitoring Programme (2008) rural water supply coverage in Nigeria decreased from 34 per cent in 1990 to 30 per cent in 2006 and urban drinking water supply declined from 80 per cent in 1990 to 65 per cent in 2006. Nigeria with an estimated population of over 140 million is the most populous nation in Africa and if Nigeria does not meet the MDGs it is unlikely that Sub-Saharan Africa will meet them. In order to be on track thousands of boreholes will need to be drilled in the country particularly in the rural areas. To achieve this, radically different approaches are needed that will incorporate a variety of solutions. Emphasis has to be placed on solutions that are affordable and which will allow households and communities to satisfy their need for potable water. In Nigeria, drilling rigs are being fabricated locally by small enterprises. Boreholes are also being drilled manually at a fraction of the cost of machine drilled holes. This research assesses the potential of locally fabricated rigs and hand drilling to contribute to meeting the MDG for water supply.
Comparison and vanishing theorems for Kähler manifolds
Creators: name: Ni, Lei
name: Zheng, Fangyang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper, we consider orthogonal Ricci curvature $Ric^{\perp}$ for Kähler manifolds, which is a curvature condition closely related to Ricci curvature and holomorphic sectional curvature. We prove comparison theorems and a vanishing theorem related to these curvature conditions, and construct various examples to illustrate their subtle relationship.