cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
All-optical signal processing in optical communication systems
Creators: name: Wei, Chia-Chien
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: all-optical
format conversion
optical communication
signal regeneration
wavelength conversion
Engineering, Electronics and Electrical (0544)

description: In this dissertation, new approaches for all-optical wavelength conversion, all-optical on-off keying (OOK) to differential phase-shift keying (DPSK) format conversion and all-optical DPSK regeneration are proposed and analyzed theoretically.   In order to improve the wavelength conversion bandwidth of cross-polarization modulation (XPoM) in a semiconductor optical amplifier, a novel conversion scheme named differential XPoM (DXPoM) is proposed, and it is realized by adding an extra birefringence delay line in the conventional XPoM. In this part, both the large-signal simulation and small-signal model of DXPoM are developed, and they successfully predict results that agree with experimental outcomes. The large-signal simulation of DXPoM evidently shows the performance improvement and match well with experimental results. The small-signal model gives more comprehensible and intuitive physical insight of DXPoM.  For format conversion, using the cross-phase modulation (XPM) effect in a birefringent photonic crystal fiber (PCF), the conversion of OOK-to-DPSK is achieved at 40 Gb/s for the first time. Launching the probe at 45 degree relative to the birefringence axes of the PCF and having the pump-probe detuning (PPD) greater than ~6 nm can realize polarization-insensitive XPM-based conversion. The polarization- and PPD-dependent nonlinear phase shift is investigated theoretically, and insufficient phase shift (< pi) in XPM-based conversion is unavoidable. Moreover, the amplitude noise (AN) of an OOK pump would be converted into the phase noise (PN) of the converted DPSK signal. The penalties induced by these issues are discussed analytically as well.  Because the DPSK format is influenced by both AN and PN, in addition to amplitude regeneration, the regeneration of DPSK signals has to preserve phase information or eliminate PN. A novel all-optical phase noise averager (PNA) is proposed to reduce residual PN in an amplitude-managed DPSK transmission system. It can increase the correlation between the PNs of neighboring bits and greatly reduce the differential PN in the transmission system. Considering various PN, the multiple PN averaging effect is investigated, and the effective PN is convergent regardless of the transmission distance. Furthermore, theoretical bit error rates of the DPSK format with various regeneration schemes are presented for comparison.
Elicitation on nominal possession and verbal agreement paradigms
Creators: name: Maldonado Sales, Nelly Idalia Nikte
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on nominal possession of several nouns, followed by imperfective verbal agreement paradigms of intransitive verbs "walk" and "sleep".

In this file bundle: 1 Zoom video/audio recording, 1 pdf of typed notes.
Lakshmibai-Seshadri paths of level-zero weight shape and one-dimensional sums associated to level-zero fundamental representations
Creators: name: Naito, Satoshi
name: Sagaki, Daisuke
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We give interpretations of energy functions and (classically restricted) one-dimensional sums associated to tensor products of level-zero fundamental representations of quantum affine algebras in terms of Lakshmibai-Seshadri paths of level-zero weight shape.
Kirche im digitalen Raum: neue Chancen für die Ökumene?
Creators: name: Merle, Kristin
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 70 Nr. 2 (2021): Ökumenische Rundschau, Band 70, Heft 2
Matrix elements and Parton Shower in the event generator BABAYAGA
Creators: name: Balossini, G.
name: Calame, C. M. Carloni
name: Montagna, G.
name: Nicrosini, O.
name: Piccinini, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new version of the event generator BABAYAGA is presented, which is based on an original matching of the Parton Shower approach with the complete exact O(alpha) matrix element for the inclusion of the QED radiative corrections to the Bhabha process at flavour factories. The theoretical accuracy of the improved generator is conservatively estimated to be 0.2%, by comparison with independent calculations. The generator is a useful tool for precise luminosity determination at flavour factories, for center of mass energies below 10 GeV.
description: 4 pages, 2 figures. To appear in the proceedings of the International Workshop e+ e- Collisions from phi to psi, Novosibirsk (Russia), 27 Feb - 2 Mar 2006
Planet formation in intermediate-separation binary systems
Creators: name: Panić, O.
name: Haworth, T. J.
name: Petr-Gotzens, M. G.
name: Miley, J.
name: Ancker, M. van den
name: Vioque, M.
name: Siess, L.
name: Parker, R.
name: Clarke, C. J.
name: Kamp, I.
name: Kennedy, G.
name: Oudmaijer, R. D.
name: Pascucci, I.
name: Richards, A. M. S.
name: Ratzka, T.
name: Qi, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the first characterisation of the individual discs in the intermediate separation binary systems KK Oph and HD 144668 at millimetre wavelengths. In both systems the circum-primary and the circum-secondary discs are detected in the millimetre continuum emission, but not in $^{13}$CO nor C$^{18}$O lines. Even though the disc structure is only marginally resolved, we find indications of large-scale asymmetries in the outer regions of the primary discs, most likely due to perturbation by the companion. The derived dust masses are firmly above debris disc level for all stars. The primaries have about three times more dust in their discs than the secondaries. In the case of HD 144668 the opacity spectral index of the primary and secondary differ by the large margin of 0.69 which may be a consequence of the secondary disc being more compact. Upper limits on the gas masses imply less than 0.1 M$_{\textrm{jup}}$ in any of these discs, meaning that giant planets can no longer form in them. Considering that there have been no massive gas discs identified to date in intermediate separation binaries (i.e., binaries at a few hundred au separation), this opens space for speculation whether their binarity causes the removal of gas, with tidal interaction truncating the discs and hence shortening the accretion timescale. More systematic studies in this respect are sorely needed.
description: 12 pages. Accepted for publication in MNRAS
Hamiltonian structure of reductions of the Benney system
Creators: name: Gibbons, John
name: Lorenzoni, Paolo
name: Raimondo, Andrea
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We show how to construct the Hamiltonian structures of any reduction of the Benney chain (dKP) starting from the family of conformal maps associated to it.
description: 35 pages, 2 figures
An Examination of Factors Related to Disproportionate Minority Contact within the Juvenile Justice System in Baltimore County, Maryland
Creators: name: Prichard, Jennifer Marie
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: detention
differential risk
differential treatment
disproportionate minority contact
juvenile
race

description: Disproportionate minority contact, or DMC, has received national attention as a pervasive problem in many juvenile justice systems. Black youth are routinely detained at rates disproportionate to the rates of White youth. This study empirically examined the identification and assessment stages of DMC in Baltimore County at the emergency intake detention point by calculating the rate of disproportionality and exploring the effects of differential risk and differential treatment on the detainment of Black youth. The sample in this study was comprised of youth who committed a crime that mandated a request for emergency detention (N=1663; mean age =14.8, SD=; 1.83; 65% Black). The relative rate indices (RRI) for this study show that Black youth are 3.32 times more likely than White youth to be arrested and 2.12 times more likely than White youth to be detained at emergency intake. Logistic regressions determined that Black youth were at greater risk for two detention-related risk factors, being male and committing more severe crimes. Even after controlling for these risks, Black youth were still 1.95 times more likely than White youth to be detained. A last set of logistic regressions explored the possibility the Black youth were treated differently than White youth by examining the effect of race on detention after controlling for each risk variable. Black youth continued to be 2.44 times more likely to be detained than White youth after controlling for variables such as crime severity, whether the youth had a prior record, and whether the crime resulted in an injury. The inclusion of interaction terms in the logistic regressions did not yield any significant results, suggesting that differential treatment is occurring for Black youth in general rather than for any subgroups of Black youth. These results were presented to local stakeholders and their reactions and feedback were included in this paper. Recommendations, including the improvement of direct youth services, cultural training for all juvenile justice workers, and potential systemic changes, were suggested to local stakeholders to address DMC in Baltimore County.
Elicitation on nominal possession and verbal agreement paradigms
Creators: name: Chilel Ramírez, Ovilia Marina
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on nominal possession of several nouns, followed by imperfective verbal agreement paradigms of intransitive verbs "walk" and "sleep".

In this file bundle: 1 Zoom video/audio recording, 1 pdf of typed notes.
Spontaneous atomic crystallization via diffractive dephasing in optical cavities
Creators: name: Costa-Boquete, Adrián
name: Baio, Giuseppe
name: Robb, Gordon R. M.
name: Oppo, Gian-Luca
name: Griffin, Paul
name: Ackemann, Thorsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The design of an experiment on the spontaneous crystallization of a laser-cooled, but thermal atomic cloud into a hexagonally structured phase is discussed. Atomic interaction is mediated by the dipole potential of an optical lattice formed spontaneously in a multi-mode degenerate cavity from single-mode longitudinal pumping. The length scale of the structure is given by the diffractive dephasing between the spontaneous sidebands and the on-axis pump. A linear stability indicates that the transition can be observed in a cavity of moderate finesse compatible with having the cavity mirrors outside the vacuum cell. A new anti-reflected cell has been assembled for this purpose.
COMPOSITE GYPSUM MATERIALS FOR THE PRODUCTION OF THERMAL INSULATION PRODUCTS: DEVELOPMENT, PROPERTIES, AND APPLICATIONS
Creators: name: Mustafaqulov, Javohir
name: Kurbanov, Zavkiddinjon
Publisher: name: Zenodo
Year: 2024

description: This thesis investigates the development of composite gypsum materials designed for thermal insulation in modern construction. The research focuses on enhancing the thermal, mechanical, and environmental properties of gypsum through the addition of fibers, polymers, and lightweight aggregates. By exploring the influence of these additives, the study identifies the optimal composition for thermal insulation products. The results demonstrate that composite gypsum materials exhibit improved thermal resistance, mechanical strength, and durability, making them suitable for sustainable construction practices. Future research directions include the incorporation of eco-friendly additives and testing long-term performance in varying environmental conditions.
A Comparison of Two Types of Video Modeling to Teach Adaptive Skills to Children with Autism
Creators: name: Burns, Anna Lee
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: Autism
Modeling
Video

description: The study compared learners' point of view video modeling to whole person video modeling to teach table setting and pouring to children with autism. Twenty-six males between the ages of 4-16 participated in the study. Results of an analysis of covariance, Pearson's r correlations and independent sample t-tests indicated that there were no statistically significant differences between the two types of video modeling on either the percentage correct on the last trial or on the number of trials required to achieve mastery. However, a moderate to large effect size was found for the learners' point of view condition, suggesting future research may be warranted. The results of the analysis of covariance also indicated that imitation ability prior to the intervention had a statistically significant relationship with the outcome variables. This finding suggests that children with autism may benefit from being taught to imitate prior to exposure to video modeling interventions.
Adversarial Classification: An Ensemble-based approach
Creators: name: Chinavle, Deepak Niwrutti
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: adversarial classification
concept drift
machine learning

description: Spam has been studied and dealt with extensively in the email, web and, recently, the blog domain. Recent work has addressed the problem of non- stationarity of data us-ing  ensemble based approaches. Adversarial classification has been handled by retraining  base classifiers using labeled samples obtained from the ensemble. However, frequent re-training  is expensive. The need is to dynamically determine when the classifiers should be  retrained and to retrain only those classifiers that are performing poorly. We show how mu-tual  agreement between classifiers can be use to reduce retraining time, measure runtime  performance, and keep track of the weakest performing classifier. We back our research  with experimental results using real life data from blogs as a special case of spam.
Dynamical PN Evolution with Magnetic Fields
Creators: name: Garcia-Segura
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Hydrodynamical simulations played an important role in understanding the dynamics and shaping of planetary nebulae in the past century. However, hydrodynamical simulations were just a first order approach. The new millennium arrived with the generalized understanding that the effects of magnetic fields were necessary to study the dynamics of planetary nebulae. Thus, B-fields introduced a whole new number of physical possibilities for the modeling. In this paper, we review observational works done in the last 5 years and several works on magnetohydrodynamics about proto-planetary nebulae, since all the effort has been focused on that stage, and discuss different scenarios for the origin of magnetized winds, and the relation binary-bipolararity.
description: 7 pages, Review Talk, IAU 243, Planetary Nebulae in our Galaxy and Beyond
Characterization of the light activated properties of the novel photopigment melanopsin
Creators: name: Walker, Marquis T.
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Biology, Neuroscience (0317)
Melanopsin
opsin
phototransduction

description: . Using an in vitro biochemical approach to study the photochemical properties of heterologously expressed and endogenous melanopsin, I have demonstrated that melanopsin solubilized in detergent is sensitive to the ionic strength of the solution. Solubilized in a detergent solution with high or low NaCl concentration, heterologously expressed melanopsin forms two spectrally distinct photopigments with absorbance maxima of 420 nm or 480 nm, respectively. Surprisingly, when native melanopsin is purified from dark adapted mouse retinas the photopigment has a maximum absorbance of 500 nm. Finally, I present the first demonstration that native mouse melanopsin binds 11-cis retinal chromophore in the dark and light irradiation causes it to isomerize to all-trans retinal.
After  Every Darkness Is Light: The Experiences of Afghan Women Coping with Violence and Immigration
Creators: name: Welsh, Elena
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: Afghan Women
Afghanistan
Coping
Immigration
Resilience
War Exposure

description: Afghan women who have immigrated to the United States have often been exposed to violence and other war-related traumas. This qualitative research explores some of these experiences and examines the behaviors that eight Afghan women engaged in to support the mental health of themselves and others, despite experiences of war and displacement. The coping processes identified represent diverse and often culturally-grounded methods of facing hardship. Because the participants endorsed relatively low levels of current mental health difficulties, the study provides information on the adaptive processes of individuals who do not develop complete or persistent PTSD, despite severe trauma. The study also illustrates that multiple pathways to resilience exist, as no two women engaged in all the same coping processes.
A Biopsychosocial Explanation of an Experimental Pain Outcome
Creators: name: Goodin, Burel Robert
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: biopsychosocial
optimism
pain

description: There is a growing body of literature that lends support to the health-promoting effects of an optimistic personality disposition, observed across various physical and psychological dimensions. As a result of these studies, it has been posited that optimism may influence the course and experience of pain; however, the inter-relations among optimism and pain outcomes have not been adequately studied. In a review of the limited number of studies previously conducted, it has been reported that optimism does indeed positively influence the course and experience of pain. However, one drawback to these preliminary lines of investigation is that the relation between optimism and pain has only been examined via bivariate analyses and has not (to date) been considered within a biopsychosocial rubric. Therefore, little is known about the potential mechanisms that might help to explain why those with greater optimism experience pain differently than their pessimistic counterparts. This study sought to build upon and extend the current body of knowledge related to optimism and the perception of pain through examination of biological and psychosocial moderators and mediators within several comprehensive biopsychosocial models.
title: The Impact of Uncertainty on Customer Satisfaction
Creators: name: Back, Camila
name: Spann, Martin
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2022

description: Customer satisfaction is an important metric to predict customer behavior and as a result firms' profitability. Expectations of a product's performance serve as a reference point against which customers evaluate their satisfaction with the products' actual performance. However, what is the effect of uncertainty in expectations? This paper develops a novel theoretical model of satisfaction, in which expectations reflect distributions of individual beliefs about performance outcomes. Based on this model, uncertainty shifts subjective reference points upward. That is, uncertainty increases the performance level at which customers switch from being dissatisfied to being satisfied. Furthermore, uncertainty has an attenuating effect on both positive and negative deviations of actual performance from subjective reference points. Put differently, a bad performance feels less bad and a good performance feels less good when it is expected, compared with unexpected. The authors find support for the model's predictions in an experimental study on product delivery as well as a field study based on online reviews. In addition, the authors develop a model-based tool that predicts the effect of uncertainty on customer satisfaction across different customizable scenarios. The paper's results carry implications for firms' communication, customer valuation and recovery strategies.
Affect Recognition in the Context of Romantic Relationships
Creators: name: Jobe, Brian Michael
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: affect
dating
empathic accuracy
relationship satisfaction

description: The relation between affect recognition and relationship satisfaction was examined in a sample of 51 college-aged dating couples. Partners independently completed an affect recognition task by listening to 32 statements read by 4 actors, and identifying the expressed affect from a list of 8 possible affects (Neutral, Anger, Joy, Nervousness, Sadness, Fear, Hate, Depression). The results indicated that the men and women performed equally well on the affect recognition task and that no significant relation was found between either partner's affect recognition ability and his/her rating of relationship satisfaction. Limited support was found for the hypothesis that affect recognition ability match within a couple may relate to ratings of relationship satisfaction for women. The lack of support of previous findings suggests that affect recognition may be more than a general communication skill, but instead a relationship-specific skill that develops over time.
Running of Newton's constant and non integer powers of the d'Alembertian
Creators: name: Nacir, D. López
name: Mazzitelli, F. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The running of Newton's constant can be taken into account by considering covariant, non local generalizations of the field equations of general relativity. These generalizations involve nonanalytic functions of the d'Alembertian, as $(-\Box)^{-α}$, with $α$ a non integer number, and $\ln[-\Box]$. In this paper we define these non local operators in terms of the usual two point function of a massive field. We analyze some of their properties, and present specific calculations in flat and Robertson Walker spacetimes.
description: 16 pages, no figures. Introduction improved. References added. Version to appear in Phys. Rev. D
Elicitation on nominal possession and verbal agreement paradigms
Creators: name: Carrillo Godínez, Silvia Lucrecia
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on nominal possession of several nouns, followed by imperfective and proximate verbal agreement paradigms of several intransitive verbs and "to see".

In this file bundle: 1 pdf of typed notes.
A Visualization and Statistical Analysis Tool for Lightning Strike Data
Creators: name: Desai, Mayuri N.
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: lightning
visualization
statistical
modeling
tool
Engineering, Electronics and Electrical (0544)

description: Lightning has been a global phenomenon observed for thousands of years, and is yet not completely understood by scientists. It is the characteristic property of thunderstorms and even a slight rise in air temperature at ground level leads to a furious increase in the frequency of lightning during thunderstorms. Cloud-to-ground (CG) lightning parameters and the spatial distribution of lightning flashes are of fundamental interest for the design of lightning protection systems. Lightning is becoming the leading cause of weather related personal injuries; hence, the study of lightning strike behavior with respect to various parameters like strike time, geographical distribution, and strength, apart from its electromagnetic wave characteristics, has always been a very challenging and interesting field to explore. Every day meteorological sensors all over the world collect a huge amount of lightning storm information. Vaisala is one of the many companies involved in the environmental measurement business, especially weather measurement, that provide lightning strike information for an entire day every day. The Vaisala lightning strike data is generally a multiple-parameter data file listing date, time, latitude, longitude, strength, angle from a specific location, distance from a specific location, and stroke multiplicity. ; We developed a software tool in MATLAB comprising various visualization and statistical analysis algorithms to study Vaisala lightning strike data in a variety of ways with respect to strike time, strength, and location. The visualization algorithms present lightning strike data in several 2D and 3D formats with respect to strike location (in terms of latitude, longitude, relative distance, and angle), time, and strength. The statistical analysis algorithms present 2D and 3D histograms with respect to strength and to distance and angle relative to a reference point. They also generate the autocorrelation of the number of strikes/day vs. time (days) for difference geographical areas. The statistical modeling of the strike strength pdf from data for an entire day is implemented via different algorithms for six different pdfs: Rayleigh, Gamma, lognormal, Weibull, Chi-square, and F-distribution. The algorithms are implemented for one-year-period data files to study variation within days, months, and seasons of a year. The strike-strength pdf fit results are compared by visual inspection and by MSE to conclude that the F-distribution pdf is a good-fit model for Vaisala strike strength data considered.
Self-assembly of protein amyloid: a competition between amorphous and ordered aggregation
Creators: name: Lee, Chiu Fan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Protein aggregation in the form of amyloid fibrils has important biological and technological implications. Although the self-assembly process is highly efficient, aggregates not in the fibrillar form would also occur and it is important to include these disordered species when discussing the thermodynamic equilibrium behavior of the system. Here, we initiate such a task by considering a mixture of monomeric proteins and the corresponding aggregates in the disordered form (micelles) and in the fibrillar form (amyloid fibrils). Starting with a model on the respective binding free energies for these species, we calculate their concentrations at thermal equilibrium. We then discuss how the incorporation of the disordered structure furthers our understanding on the various amyloid promoting factors observed empirically, and on the kinetics of fibrilization.
description: Minor changes in the presentation
Rainfall-Runoff Prediction at Multiple Timescales with a Single Long Short-Term Memory Network
Creators: name: Gauch, Martin
name: Kratzert, Frederik
name: Klotz, Daniel
name: Nearing, Grey
name: Lin, Jimmy
name: Hochreiter, Sepp
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Long Short-Term Memory Networks (LSTMs) have been applied to daily discharge prediction with remarkable success. Many practical scenarios, however, require predictions at more granular timescales. For instance, accurate prediction of short but extreme flood peaks can make a life-saving difference, yet such peaks may escape the coarse temporal resolution of daily predictions. Naively training an LSTM on hourly data, however, entails very long input sequences that make learning hard and computationally expensive. In this study, we propose two Multi-Timescale LSTM (MTS-LSTM) architectures that jointly predict multiple timescales within one model, as they process long-past inputs at a single temporal resolution and branch out into each individual timescale for more recent input steps. We test these models on 516 basins across the continental United States and benchmark against the US National Water Model. Compared to naive prediction with a distinct LSTM per timescale, the multi-timescale architectures are computationally more efficient with no loss in accuracy. Beyond prediction quality, the multi-timescale LSTM can process different input variables at different timescales, which is especially relevant to operational applications where the lead time of meteorological forcings depends on their temporal resolution.
On coverings of simple abelian varieties
Creators: name: Debarre, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E20, 14J60, 14K02, 14K05, 14K12

description: We show that the vector bundle associated to a smooth projective connected finite covering of a simple complex abelian variety is ample (under a simple necessary condition). This result is obtained by showing that this bundle is M-regular in the sense of Pareschi-Popa, and that any M-regular sheaf is ample.
description: 8 pages
Western Arctic women artists’ perspectives on education and art
Creators: name: McNeal, Joanne Carolyn
Publisher: name: University of British Columbia
Year: 2009

description: In the Western Arctic, women from two indigenous cultures, Inuit and Dene, have made art for hundreds of years. Women's art was different from men's, but was essential to the survival of families. Their skills were also used by colonial explorers and traders. Now a third group of women, of European heritage called 'others' or 'non-natives', are also making art in the Western Arctic. Each cultural group has a rich heritage, and where the cultures mix and co-exist, mutual influence is observable, and unique forms of art have developed. Women of all cultural groups make artwork to contribute to family use as well as for sale. While their artwork is known, as individual women they have remained unseen, unheard, and unrecognized outside their communities. This study focusses upon the women who produce the artwork; what they call art; how they influence each other; how new materials and techniques have changed their work; how they learn their skills; their ideas for how future generations should be taught; what artwork means in their lives; how they value cultural history, and how they practice aesthetics, and/or art criticism. Forty-five women artists were interviewed over five summers, between 1992-1996. Most were videotaped in Inuvik at two festivals, or in Aklavik, Yellowknife, Tuktoyaktuk or Fort Smith, NWT . Each woman tells, in her own words, how her artwork evolved from early learning, and its meaning now. These women do not call themselves feminists but they discuss issues and struggles common to feminism. The lives of the women are interwoven; they are producing artists, teachers, organizers, wives, mothers, elders and community leaders. Their voices provide a historic link between old cultural traditions and new generations. The conclusions drawn from this study include differences in individual choices, power, education, various ways of learning, and how the women value their artwork. Influences on women's art include necessity, new materials and techniques, and other arctic peoples and land. The meaning of art in their lives is connected to individual self-development and economic survival, but also to families, and community recognition. They recommend that future generations be taught art skills at home as well as at school, and provide practical ideas for effective art education in schools in the Western Arctic and beyond.
Universal optimal hole-doping concentration in single-layer high-temperature cuprate superconductors
Creators: name: Honma, T.
name: Hor, P. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Astrophysics (astro-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We argue that in cuprate physics there are two types, hole content per CuO$_2$ plane ($P_{pl}$) and the corresponding hole content per unit volume ($P_{3D}$), of hole-doping concentrations for addressing physical properties that are two-dimensional (2D) and three-dimensional (3D) in nature, respectively. We find that superconducting transition temperature ($T_c$) varies systematically with $P_{3D}$ as a superconducting \textquotedblleft $dome$\textquotedblright with a universal optimal hole-doping concentration $P_{3D}^{opt.}$ = 1.6 $\times$ 10$^{21}$ cm$^{-3}$ for single-layer high temperature superconductors. We suggest that $P_{3D}^{opt.}$ determines the upper bound of the electronic energy of underdoped single-layer high-$T_c$ cuprates.
description: 8 pages, 4 figures; added references ;accepted for the publication in Supercond. Sci. Technol ; Ref. 13 is revised
Sampling and the complexity of nature
Creators: name: Hangleiter, Dominik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Randomness is an intrinsic feature of quantum theory. The outcome of any quantum measurement will be random, sampled from a probability distribution that is defined by the measured quantum state. The task of sampling from a prescribed probability distribution is therefore a natural technological application of quantum devices. In the research presented in this thesis, I investigate the complexity-theoretic and physical foundations of quantum sampling algorithms. I assess the computational power of natural quantum simulators and close loopholes in the complexity-theoretic argument for the classical intractability of quantum samplers (Part I). I shed light on how and under which conditions quantum sampling devices can be tested or verified in regimes that are not simulable on classical computers (Part II). Finally, I explore the computational boundary between classical and quantum computing devices (Part III). In particular, I develop efficiently computable measures of the infamous Monte Carlo sign problem and assess those measures both in terms of their practicability as a tool for alleviating or easing the sign problem and the computational complexity of this task. An overarching theme of the thesis is the quantum sign problem which arises due to destructive interference between paths -- an intrinsically quantum effect. The (non-)existence of a sign problem takes on the role as a criterion which delineates the boundary between classical and quantum computing devices. I begin the thesis by identifying the quantum sign problem as a root of the computational intractability of quantum output probabilities. It turns out that the intricate structure of the probability distributions the sign problem gives rise to, prohibits their verification from few samples. In an ironic twist, I show that assessing the intrinsic sign problem of a quantum system is again an intractable problem.
description: PhD Thesis, Freie Universit\"at Berlin (2020). Chapters 2, 3, 7, 8, 9 contain unpublished overview material
A Variational Approach Towards Distributed Data Mining
Creators: name: Mukherjee, SOURAV
Publisher: name: Maryland Shared Open Access Repository
Year: 2007
Subjects: Computer Science (0984)

description: This thesis presents a general framework for applying the variational approximation technique to problems in Distributed Data Mining. Distributed Data Mining aims at   analyzing distributed data in order to extract useful information,  while paying attention to computational cost, communication cost,  storage requirements, and human-computer interaction. This thesis shows that the variational method  is a deterministic approximation  technique that can be applied to formulate communication-efficient and scalable solutions to Distributed Data Mining problems. As an illustration, two important  problems in Distributed Data Mining are chosen: Distributed Probabilistic Inferencing in Graphical Models, and Distributed Linear Regression over Vertically Partitioned Data. In both cases, analytical results have been derived to  demonstrate that the variational method leads to communication-efficient  and scalable solutions. These claims are validated by experimental results.  From a performace point of view, the  results show that  sufficiently accurate results can be achieved even with modest  communication-bandwidth allowances. The results  also indicate that the variational techniques are  highly scalable. Thus, the variational approximation framework is successfully established as a framework suitable  for formulating efficient solutions to Distributed Data Mining problems.
Holographic Estimate of Oblique Corrections for Technicolor
Creators: name: Hong, Deog Ki
name: Yee, Ho-Ung
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the oblique corrections to the electroweak interaction in the holographic model of technicolor theories. The oblique S parameter is expressed in terms of a solution to the equations of motion for the AdS bulk gauge fields. By analyzing the solution, we establish a rigorous proof that the S parameter is positive and is reduced by walking. We also present the precise numerical values for the S parameter of various technicolor models by solving the equations numerically.
description: 10 pages, 1 figure, RevTeX 4.0: published version. references added
Feasibility of characterizing subsurface brines on Ceres by electromagnetic sounding
Creators: name: Grimm, Robert
name: Castillo-Rogez, Julie
name: Raymond, Carol
name: Poppe, Andrew R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The ice-rich dwarf planet Ceres is the largest object in the main asteroid belt and is thought to have a brine or mud layer at a depth of tens of kilometers. Furthermore, recent surface deposits of brine-sourced material imply shallow feeder structures such as sills or dikes. Inductive sounding of Ceres can be performed using the solar wind as a source, as was done for the Moon during Apollo. However, the magnetotelluric method -- measuring both electric and magnetic fields at the surface -- is not sensitive to plasma effects that were experienced for Apollo, which used an orbit-to-surface magnetic transfer function. The highly conductive brine targets are readily separable from the resistive ice and rock interior, such that the depth to deep and shallow brines can be assessed simultaneously. The instrumentation will be tested on the Moon in 2023 and is ready for implementation on a Ceres landed mission.
Spatial synchronization and extinction of species under external forcing
Creators: name: Amritkar, R. E.
name: Rangarajan, Govindan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the interplay between synchronization and extinction of a species. Using a general model we show that under a common external forcing, the species with a quadratic saturation term in the population dynamics first undergoes spatial synchronization and then extinction, thereby avoiding the rescue effect. This is because the saturation term reduces the synchronization time scale but not the extinction time scale. The effect can be observed even when the external forcing acts only on some locations provided there is a synchronizing term in the dynamics. Absence of the quadratic saturation term can help the species to avoid extinction.
description: 4 pages, 2 figures
Elicitation on nominal possession
Creators: name: Aguilar Láinez, Onísimo Basbaldo
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on nominal possession of several nouns, followed by a present imperfective conjugation of the verb 'to walk'.

In this file bundle: 1 Zoom video/audio recording, 1 Zoom chat file, 1 pdf of typed notes.
School-based mentoring: the experiences of proteges and mentors
Creators: name: Morgan, Jillian Dale
Publisher: name: University of British Columbia
Year: 2009

description: This study was based on the experiences of seven proteges and seven mentors in a school-based mentoring program for at-risk students. The purpose of the study was to gain insights into the experience of school-based mentoring relationships from the perspectives of proteges and mentors, the relevance of a school-based mentoring program and the program design. The data were collected through semi-structured ethnographic interviews which included the construction of a narrative account and the recalling of critical incidents (Flanagan, 1954). Interviews were audio taped and transcribed verbatim. Data analysis was based on the empirical phenomenological psychological method (Karlsson, 1993). The results obtained from the data analysis were presented in terms of common themes, reflecting the proteges' and mentors' experience of their mentoring relationships. The findings of this study led to the general conclusions that (1) schoolbased mentoring relationships can facilitate the learning of new knowledge for both proteges and mentors (2) school-based mentoring relationships can be positive experiences for both proteges and mentors and (3) school-based mentoring relationships can be mutually beneficial providing proteges with a significant adult in their lives and mentors with the opportunities to share experiences and have a positive impact on at-risk youth. In addition to these three general conclusions, the findings of this study identify several important characteristics of positive mentoring relationships from the perspectives of both mentors and proteges.
Optical Frequency Comb Calibrated Near Infrared Solar Heterodyne Spectroscopy
Creators: name: Fredrick, Connor
name: Olsen, Freja
name: Terrien, Ryan
name: Mahadevan, Suvrath
name: Quinlan, Franklyn
name: Diddams, Scott
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We perform heterodyne spectroscopy at 1.56 micron with a tunable laser and thermal radiation from the Sun. The laser tuning is calibrated with a frequency comb, providing a simple spectrometer with absolute frequency tracebility and resolving power of 2,000,000
description: Summary from OSA CLEO Meeting (2020)
Stable bundles on 3-fold hypersurfaces
Creators: name: Jardim, Marcos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J60; 14F05

description: Using monads, we construct a large class of stable bundles of rank 2 and 3 on 3-fold hypersurfaces, and study the set of all possible Chern classes of stable vector bundles.
description: 10 pages. Minor changes only, many misprints corrected, To appear in Bulletin of the Brazilian Mathematical Society 38 (2007)
Critical properties of the Susceptible-Exposed-Infected model with correlated temporal disorder
Creators: name: Wada, Alexander H. O.
name: Hoyos, José A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we study the critical properties of the non-equilibrium phase transition of the Susceptible-Exposed-Infected model under the effects of long-range correlated time-varying environmental noise on the Bethe lattice. We show that temporal noise is perturbatively relevant changing the universality class from the (mean-field) dynamical percolation to the exotic infinite-noise universality class of the contact process model. Our analytical results are based on a mapping to the one-dimensional fractional Brownian motion with an absorbing wall and is confirmed by Monte Carlo simulations. Unlike the contact process, our theory also predicts that it is quite difficult to observe the associated active temporal Griffiths phase in the long-time limit. Finally, we also show an equivalence between the infinite-noise and the compact directed percolation universality classes by relating the SEI model in the presence of temporal disorder to the Domany-Kinzel cellular automaton in the limit of compact clusters.
description: 10 pages, 4 figures
g-Factor Tuning and Manipulation of Spins by an Electric Current
Creators: name: Wilamowski, Zbyslaw
name: Malissa, Hans
name: Schäffler, Friedrich
name: Jantsch, Wolfgang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the Zeeman splitting of two-dimensional electrons in an asymmetric silicon quantum well, by electron-spin-resonance (ESR) experiments. Applying a small dc current we observe a shift in the resonance field due to the additional current-induced Bychkov-Rashba (BR) type of spin-orbit (SO) field. This finding demonstrates SO coupling in the most straightforward way: in the presence of a transverse electric field the drift velocity of the carriers imposes an effective SO magnetic field. This effect allows selective tuning of the g-factor by an applied dc current. In addition, we show that an ac current may be used to induce spin resonance very efficiently.
description: 4 pages, 4 figures