cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamic exchange coupling and Gilbert damping in magnetic multilayers
Creators: name: Tserkovnyak, Yaroslav
name: Brataas, Arne
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study dynamic properties of thin ferromagnetic films in contact with normal metals. Moving magnetizations cause a flow of spins into adjacent conductors, which relax by spin flip, scatter back into the ferromagnet, or are absorbed by another ferromagnet. Relaxation of spins outside the moving magnetization enhances the overall damping of the magnetization dynamics in accordance with the Gilbert phenomenology. Transfer of spins between different ferromagnets by these nonequilibrium spin currents leads to a long-ranged dynamic exchange interaction and novel collective excitation modes. Our predictions agree well with recent ferromagnetic-resonance experiments on ultrathin magnetic films.
description: 15 pages, 3 figures, for MMM'02 proceedings
Chydarteres dimidiatus subsp. taeniatus
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Chydarteres
Chydarteres dimidiatus
Chydarteres dimidiatus taeniatus (germar, 1824)

description: Chydarteres dimidiatus taeniatus (Germar, 1824)?
 Cerambyx (Trachyderes) taeniatus Germar, 1824: 512. Monné 2016: 1007 (cat.).
 Dept. Santa Cruz. 18°59′S / 63°14′W, 520 m, 10 km S Abapo: on/flying to flowers of “Tinajero A”, female, 2.I.2008 (RCSZ).
 Dept. Tarija. 21°01′S / 63°18′W, 600 m, 30 km N of Villamontes, 4 km E of Camatindi, Semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, female, 10.I.2010 (RCSZ).
 Remarks. Problems of identification in this subspecies oblige these records to be provisional in nature.
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 24, DOI: 10.5281/zenodo.4645968
Homotopy Actions, Cyclic Maps and their Duals
Creators: name: Arkowitz, Martin
name: Lupton, Gregory
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55Q05; 55M30; 55P30

description: An action of A on X is a map F: AxX to X such that F|_X = id: X to X. The restriction F|_A: A to X of an action is called a cyclic map. Special cases of these notions include group actions and the Gottlieb groups of a space, each of which has been studied extensively. We prove some general results about actions and their Eckmann-Hilton duals. For instance, we classify the actions on an H-space that are compatible with the H-structure. As a corollary, we prove that if any two actions F and F' of A on X have cyclic maps f and f' with Omega(f) = Omega(f'), then Omega(F) and Omega(F') give the same action of Omega(A) on Omega(X). We introduce a new notion of the category of a map g and prove that g is cocyclic if and only if the category is less than or equal to 1. From this we conclude that if g is cocyclic, then the Berstein-Ganea category of g is <= 1. We also briefly discuss the relationship between a map being cyclic and its cocategory being <= 1.
description: 16 pages, LaTeX 2e
title: Εκτίμηση ενεργειακού ισοζυγίου θερμοκηπιακών μονάδων αμφίρρικτου τύπου
title: Energy balance assessment of greenhouses
Creators: name: Σαριδακης Γεωργιος
Publisher: name: Technical University of Crete
Year: 2022

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι ο υπολογισμός των θερμικών και ψυκτικών φορτίων ενός θερμοκηπίου αμφίρρικτου τύπου. Ο υπολογισμός των ενεργειακών φορτίων με βάση υπολογιστική εφαρμογή που θα αναπτυχθεί, στην οποία τιμές ως εισόδου θα εισάγονται η θερμοκρασία, η ηλιακή ακτινοβολία, η ταχύτητα ανέμου και θα υπολογίζονται οι θερμικές απώλειες, τα θερμικά κέρδη, η θερμοαγωγιμότητα του υλικού κάλυψης και το θερμικό/ψυκτικό φορτίο του θερμοκηπίου. Επίσης σαν στόχο αυτή η εργασία εκτός από την εύρεση του ενεργειακού ισοζυγίου έχει την αξιολόγηση υλικών κάλυψης του περιβλήματος με ανάδειξη του πιο αποδοτικού.
description: Subject of this thesis is the heating and cooling load calculation of a gable roof greenhouse. This calculation of thermal loads will be performed in a computer application, which is to be developed. The application is going to use temperature, solar radiation and wind speed input and thus calculate heat loss and gain, thermal conductivity of the greenhouse covering material and the heating and cooling load of the greenhouse. In addition, apart from inferring energy balance, this thesis also aims to assess the covering materials of greenhouses in order to find the most efficient one.
Coupled Thermal and Compositional Evolution of Photo Evaporating Planet Envelopes
Creators: name: Malsky, Isaac
name: Rogers, Leslie A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Photo-evaporative mass loss sculpts the atmospheric evolution of tightly-orbiting sub-Neptune-mass exoplanets. To date, models of the mass loss from warm Neptunes have assumed that the atmospheric abundances remain constant throughout the planet's evolution. However, the cumulative effects of billions of years of escape modulated by diffusive separation and preferential loss of hydrogen can lead to planetary envelopes that are enhanced in helium and metals relative to hydrogen (Hu et al. 2015). We have performed the first self-consistent calculations of the coupled thermal, mass-loss, and compositional evolution of hydrogen-helium envelopes surrounding sub-Neptune mass planets. We extended the MESA (Modules for Experiments in Stellar Astrophysics) stellar evolution code to model the evolving envelope abundances of photo-evaporating planets. We find that GJ 436b, the planet that originally inspired Hu et al. (2015) to propose the formation of helium enhanced planetary atmospheres, requires a primordial envelope that is too massive to become helium enhanced. Nonetheless, we show that helium enhancement is possible for planets with masses similar to GJ 436b after only several Gyr of mass loss. These planets have $R_p\lesssim 3.00~R_\oplus$, initial $f_{\rm env} < 0.5\%$, irradiation flux $\sim$10$^1$-10$^3$ times that of Earth, and obtain final helium fractions in excess of Y=0.40 in our models. The results of preferential envelope loss may have observable consequences on mass-radius relations and atmospheric spectra for sub-Neptune populations.
description: 13 Pages, 6 Figures. Submitted to Apj, and edited based off of the reviewer's suggestions. Any community comments welcome. We plan to resubmit to Apj shortly, pending community suggestions
Observability of Scattered-Light Echoes Around Variable Stars and Cataclysmic Events
Creators: name: Sugerman, Ben E. K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Scattered light echoes from variable and cataclysmic stars offer one of the most effective means to probe the structure and composition of circumtellar and interstellar media. I build a simple model of light-echo surface brightness by considering the source spectrum, and the dust density, geometry, and scattering efficiency. I use this model to investigate whether echoes should be observable around short and long-period giants, cataclysmic variables, and supernovae. Only supernovae are expected to illuminate material on both circumstellar and interstellar scales. Giant and post-AGB stars (e.g. Cepheids and Miras) with high mass-loss rates can produce observable echoes within their circumstellar envelopes. Echoes from novae and dwarf novae are probably detectable only from nearby material, and only in unusually dense gas. I present characteristic exposure times to image such echoes over a wide range of wavelengths for ground-based and {\em Hubble Space Telescope} observations. I apply these results to analyze the dust properties of the recently-reported echoes around SN 1993J, finding the dust in M81 to have a grain-size distribution and chemical composition consistent with Galactic dust. Optimal observing strategies for echo detection are also discussed.
description: 43 pages, 18 figures; Accepted for publication in the AJ
Extended Einstein relations with a complex effective temperature in a one dimensional driven lattice gas
Creators: name: Hayashi, Kumiko
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We carried out numerical experiments on a one-dimensional driven lattice gas to elucidate the statistical properties of steady states far from equilibrium. By measuring the bulk density diffusion constant $D$, the conductivity $σ$, the intensity of density fluctuations $χ$, we confirm that the Einstein relation $Dχ=σT$, which is valid in the linear response regime about equilibrium, does not hold in such steady states. Here, $T$ is the environment temperature, and the Boltzmann constant is set to unity. Recalling that the Einstein relation provided the first step in the construction of linear response theory, we attempt to extend it to a generalized form valid in steady states far from equilibrium. In order to obtain new relations among measurable quantities, we define a complex effective temperature $Θ-iΦ$ from studying the static response of the system to a slowly varying potential in space. Replacing $T$ in the Einstein relation by the real part of the effective temperature $Θ$, we numerically confirm that the relation $Dχ=σΘ$ holds in the nonequilibrium steady states far from equilibrium that we study. In addition to this extended form, we find the new relation $(L/2π)cχ=σΦ$, where $c$ represents the propagation velocity of density fluctuations.
description: 8 pages, 10 figures
Writing a good Data Management Plan : A workshop : 10 November 2021
Creators: name: Syrotiuk, Nicholas
Publisher: name: Durham University
Year: 2021
Subjects: subject: Research--Data processing--Management
subject: Data sets--Management
subject: Data management planning
subject: Research data management
subject: RDM

description: Learning objectives: In this workshop, you will learn about the seven UKRI common principles on data policy. You will also learn how to interpret funder requirements. You will learn to use the DMPonline tool for writing a DMP. Throughout the workshop we will discuss Research Data Management best practices. Structure: (1) What is data management planning? (2) Demonstration of DMPonline tool (3) Try writing a Data Management Plan using DMPonline (hands-on session)
Environmental Impact and Cost Assessment of Paper Document Created on UBC Campus
Creators: name: Pan, Hua
name: Liu, Sijia
name: Chen, Qiwei
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
Creators: name: Khanh, N. D.
name: Nakajima, T.
name: Yu, X. Z.
name: Gao, S.
name: Shibata, K.
name: Hirschberger, M.
name: Yamasaki, Y.
name: Sagayama, H.
name: Nakao, H.
name: Peng, L. C.
name: Nakajima, K.
name: Takagi, R.
name: Arima, T.
name: Tokura, Y.
name: Seki, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic skyrmions are topologically stable spin swirls with particle-like character and potentially suitable for the design of high-density information bits. While most known skyrmion systems arise in noncentrosymmetric systems with Dzyaloshinskii-Moriya interaction, also centrosymmetric magnets with a triangular lattice can give rise to skyrmion formation, with geometrically-frustrated lattice being considered essential in this case. Until today, it remains an open question if skyrmions can also exist in the absence of both geometrically-frustrated lattice and inversion symmetry breaking. Here, we discover a square skyrmion lattice state with 1.9 nm diameter skyrmions in the centrosymmetric tetragonal magnet GdRu2Si2 without geometrically-frustrated lattice by means of resonant X-ray scattering and Lorentz transmission electron microscopy experiments. A plausible origin of the observed skyrmion formation is four-spin interactions mediated by itinerant electrons in the presence of easy-axis anisotropy. Our results suggest that rare-earth intermetallics with highly-symmetric crystal lattices may ubiquitously host nanometric skyrmions of exotic origins.
description: Accepted to be published in Nature Nanotechnology
title: Community-controlled education : putting education back into the culture
Creators: name: Matheos, Kathleen
Publisher: name: University of Kent
Year: 2022

description: This thesis is an interpretive case study, drawing upon feminist and Aboriginal perspectives, about working in an educational environment described as a border world comprised of overlapping cultures. It is a chronological account of the delivery of a university programme in a First Nations community. The study seeks to explore the reasons why Aboriginal women enter and successfully complete post-secondary study, and whether their roles in traditional Aboriginal culture facilitate this process. This first portion of the study involved semi-structured interviews with three female Aboriginal educators, focusing on the traditional roles of women within Cree culture, and the relationship of these traditional roles to their roles in contemporary Cree society. The second portion of the study involves a series of group and personal interviews with female Aboriginal learners involved in a community-based programme in a Northern Cree community. The interviews, which encompassed a three-year period, sought to provide a chronological account of the learners' experiences in the programme. In addition, interviews were conducted with faculty members teaching within the programme. The interviews provided the data for an operation model entitled Community-Controlled Education that suggests criteria for the delivery of an inclusive learning experience for Aboriginal learners.
Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
Creators: name: Lindenstruth, V.
name: Loizides, C.
name: Roehrich, D.
name: Skaali, B.
name: Steinbeck, T.
name: Stock, R.
name: Tilsner, H.
name: Ullaland, K.
name: Vestbo, A.
name: Vik, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two pattern recognition methods under investigation: a sequential approach (cluster finder and track follower) and an iterative approach (track candidate finder and cluster deconvoluter). We show, that the former is suited for pp and low multiplicity PbPb collisions, whereas the latter might be applicable for high multiplicity PbPb collisions of dN/dy>3000. Based on the developed tracking schemes we show that using modeling techniques a compression factor of around 10 might be achievable.
description: 7 pages, 8 figures, to be published in IEEE-TNS
Quality Diversity for Multi-task Optimization
Creators: name: Mouret, Jean-Baptiste
name: Maguire, Glenn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Quality Diversity (QD) algorithms are a recent family of optimization algorithms that search for a large set of diverse but high-performing solutions. In some specific situations, they can solve multiple tasks at once. For instance, they can find the joint positions required for a robotic arm to reach a set of points, which can also be solved by running a classic optimizer for each target point. However, they cannot solve multiple tasks when the fitness needs to be evaluated independently for each task (e.g., optimizing policies to grasp many different objects). In this paper, we propose an extension of the MAP-Elites algorithm, called Multi-task MAP-Elites, that solves multiple tasks when the fitness function depends on the task. We evaluate it on a simulated parameterized planar arm (10-dimensional search space; 5000 tasks) and on a simulated 6-legged robot with legs of different lengths (36-dimensional search space; 2000 tasks). The results show that in both cases our algorithm outperforms the optimization of each task separately with the CMA-ES algorithm.
Co-ordination between Rashba spin-orbital interaction and space charge effect and enhanced spin injection into semiconductors
Creators: name: Wu, Wei
name: Li, Jinbin
name: Yu, Yue
name: Chui, S. T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider the effect of the Rashba spin-orbital interaction and space charge in a ferromagnet-insulator/semiconductor/insulator-ferromagnet junction where the spin current is severely affected by the doping, band structure and charge screening in the semiconductor. In diffusion region, if the the resistance of the tunneling barriers is comparable to the semiconductor resistance, the magnetoresistance of this junction can be greatly enhanced under appropriate doping by the co-ordination between the Rashba effect and screened Coulomb interaction in the nonequilibrium transport processes within Hartree approximation.
description: 4 pages, 3 figures
REGIONAL AGRICULTURAL SUPPLIES AND INPUT DEMANDS
Creators: name: Shumway, C. Richard
name: Shumway, C. Richard
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Demand and Price Analysis
Production Economics

description: Econometric estimates of supply for five output groups~-and demand for four input groups in each of ten regions of the United States are obtained and evaluated. They provide emphatic evidence of the unequal effects of changes in economic conditions and government agricultural policies on major production regions.
title: Compensatory Relationship Between Exonic Splicing Enhancer, Splice Site and Protein Function
Creators: name: Falanga, Alessia
Publisher: name: The Open University
Year: 2012

description: The process of pre-mRNA splicing involves the removal of intronic sequences from the pre-mRNA and it is directed by intronic cis acting elements know as the 5’ and 3’ splice sites that mark the boundaries of the exons. Over the two decades, however, it has become clear that exons encode for auxiliary splicing signals that either enhance or perturb their inclusion in the final mRNA product. It is possible that the evolution of mRNA sequences could be conditioned by the presence of these exonic cis-acting splicing regulatory elements and not mainly by the selection of optimal protein function. To explore this hypothesis, I have investigated how the need for ESE influences the gene evolution of a paralogous gene family, specifically the human Alkaline Phosphatases (ALPs). In this work, I have identified in correspondence to a weak 3’splice site, two ESE sequences in the placental ALP exon 4, and demonstrate that the ESE are necessary for the exon inclusion in the mRNA due to the weak 3’splice sites. Furthermore, I show that they are absent in the corresponding exon of the non-tissue specific ALP transcript, specifically exon 5 that carries a strong 3’ splice site. Most importantly, the localization of the ESEs correspond to an area that in the paralogous non-tissue specific ALP gene differs in amino acid composition with respect, not only to the placental ALP where I mapped the ESEs but also to the other members of the family, where this area is well conserved. These amino acid changes may represent a possible evolutionary constraint on enzymatic activity, in keeping with this hypothesis, substituting the amino acids in the region of the ESE for those of the paralogous non-tissue specific ALP gene increases the enzymatic activity. Thus splicing-related constraints challenge the primacy of biochemical function in rates of protein evolution.
European Community Enlargement and U.S. Wheat Exports
Creators: name: Haniotis, Tassos
name: Ames, Glenn C. W.
name: Haniotis, Tassos
name: Ames, Glenn C. W.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries
International Relations/Trade

description: Analysis based on a model differentiating products by origin indicates that U.S. wheat exports to Spain and Portugal will decrease by 33 percent as a result of EC enlargement. EC exports to its new members increase by 67 percent, while total wheat imports in the region decrease by 25 percent.
Potential for Increasing U.S-Canadian Trade in Fresh Peaches
Creators: name: Rosson, C. Parr
name: Nyankori, James C. O.
name: Rathwell, P. J.
name: Rosson, C. Parr
name: Nyankori, James C. O.
name: Rathwell, P. J.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries
International Relations/Trade

description: A spatial equilibrium model of the Canadian-U.S. trade in fresh peaches was specified and evaluated to determine the regional impacts of an exogenous increase in Canadian demand for fresh peaches. Results indicate that southeast producers would benefit the most from an increase in the Canadian demand for fresh peaches .
R-MADDPG for Partially Observable Environments and Limited Communication
Creators: name: Wang, Rose E.
name: Everett, Michael
name: How, Jonathan P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: There are several real-world tasks that would benefit from applying multiagent reinforcement learning (MARL) algorithms, including the coordination among self-driving cars. The real world has challenging conditions for multiagent learning systems, such as its partial observable and nonstationary nature. Moreover, if agents must share a limited resource (e.g. network bandwidth) they must all learn how to coordinate resource use. This paper introduces a deep recurrent multiagent actor-critic framework (R-MADDPG) for handling multiagent coordination under partial observable set-tings and limited communication. We investigate recurrency effects on performance and communication use of a team of agents. We demonstrate that the resulting framework learns time dependencies for sharing missing observations, handling resource limitations, and developing different communication patterns among agents.
description: Reinforcement Learning for Real Life (RL4RealLife) Workshop in the 36th International Conference on Machine Learning, Long Beach, California, USA, 2019
Hydrodynamical interaction between an accretion flow and a stellar wind
Creators: name: Mendoza, S.
name: Canto, J.
name: Raga, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Molecular clouds in the interstellar medium suffer gravitational instabilities that lead to the formation of one or multiple stars. A recently formed star inside a cold cloud communicates its gravitational force to the surrounding environment and soon an accretion flow falling into the star develops. After their formation, all stars soon eject a wind of gas that interacts with the external accretion flow. This interaction produces a shock wave that evolves with time. The work presented in this article formulates a simple prescription for the evolution of this interaction. With the aid of this model we construct a few radio continuum maps of the source.
description: 42 pages, 13 figures. Minor changes done to the first draft. Accepted for publication in RevMexAA
FORWARD CONTRACTING WITH UNCERTAIN INPUT SUPPLIES: A RISK PROGRAMMING APPROACH
Creators: name: Dubman, Robert W.
name: Miller, Bill R.
name: Dubman, Robert W.
name: Miller, Bill R.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries
Production Economics
Risk and Uncertainty

description: Forward contracting with uncertain input supplies and prices was investigated and a decision technique developed. Uncertain input supplies increased the risk in forward contracting. A case study of a large peanut marketing firm demonstrated the effect of uncertain input supplies on the optimal proportion of expected production to forward contract.
Absolute negative conductivity in two-dimensional electron systems under microwave radiation
Creators: name: Ryzhii, Victor
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We overview mechanisms of absolute negative conductivity in two-dimensional electron systems in a magnetic field irradiated with microwaves and provide plausible explanations of the features observed in recent experiments related to the so-called zero-resistance (zero-conductance) states.
description: 4 pages, 7 figures, presented at Internat. Symp. on Functional Semiconductor Nanosystems, Atsugi, Japan, Nov. 12-14, 2003, be published in Physica E
RICE IN ASIA: IS IT BECOMING AN INFERIOR GOOD?
Creators: name: Ito, Shoichi
name: Grant, Warren R.
name: Ito, Shoichi
name: Grant, Warren R.
Publisher: name: Unknown
Year: 1987
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: International Development
subject: Asia
subject: rice
subject: income elasticity
subject: inferior good

description: Empirical results using time-series and cross-sectional data indicate that rice in Asia is becoming an inferior good. Steady declines in rice consumption per capita are occurring, as inc~me levels rise. Accordingly, Asia should have an increasing rice surplus, putting more pressure on international rice markets in the future.
Topological junction states in graphene nanoribbons: A route to topological chemistry
Creators: name: Abdelsalam, Hazem
name: Corona, Domenico
name: Payod, Renebeth
name: sakr, mahmoud
name: Abd Elkader, omar
name: Zhang, Qinfang
name: Saroka, Vasil
Publisher: name: Zenodo
Year: 2025
Subjects: graphene
topological phases
density functional theory
tight-binding model
quantum transport
gas sensing

description: This repository contains supplementary materials for the manuscript nl-2025-001492 submitted to Nano Letters on 8 Jan 2025 and revised after 21 Mar 2025. The respository includes TB and DFT calculation raw data and Mathematica code to reproduce the reported results. This v2 includes some amendments in the Mathematica notebook.
title: Non-Canonical Wnt Signaling Maintains Hematopoietic Stem Cell Through Flamingo and Frizzled8 Interaction in the Niche
Creators: name: Sugimura, Ryohichi
Publisher: name: The Open University
Year: 2012

description: Wnt signaling is involved in self-renewal and maintenance of hematopoietic stem cells (HSCs); however, the particular role of non-canonical Wnt signaling in regulating HSCs in vivo is largely unknown. Here I show Flamingo and Frizzled8, members of non-canonical Wnt signaling, both express in and functionally maintain quiescent long-term HSCs. Flamingo regulates Frizzled8 distribution at the interface between HSCs and N-cadherin+ osteoblasts (N-cad+OBs that enrich osteoprogenitors) in the niche. I further show that N-cad+OBs predominantly express non-canonical Wnt ligands and inhibitors of canonical Wnt signaling under homeostasis. This non-canonical Wnt signaling is attenuated prior to activation of HSCs. In the activated HSCs, however, canonical Wnt signaling is enhanced. Mechanistically, non-canonical Wnt signaling mediated by Frizzled8 suppresses the Ca2+-NFAT-IFNγ pathway and antagonizes canonical Wnt signaling in HSCs. My findings demonstrate that non-canonical Wnt signaling maintains quiescent longterm HSCs through Flamingo and Frizzled8 interaction in the niche.
Dihammaphora auricollis Martins 1981
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Dihammaphora
Dihammaphora auricollis

description: Dihammaphora auricollis Martins, 1981
 Dept. Santa Cruz. 18°57′S / 63°20′W, 470 m, 13.8 km SSE Abapo, 5.8 km Charagua Rd.: on/flying to flowers of “Tinajero A”, female, 12.I.2010 (RCSZ).
 Dept. Tarija. 21°01′S / 63°18′W, 600 m, 30 km N of Villamontes, 4 km E of Camatindi, Semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, male and female (in coitus) and female, 10.I.2010 (RCSZ). 21°16′S / 63°27′W, 366 m, 4 km W Villamontes, west bank Rio Pilcomayo, 2 km S Puente Usterez: on/flying to flowers of “Naranjillo”, 4 males, 12.XII.2011 (RCSZ). 21°18′S / 63°30′W, 500 m, 7 km W of Villamontes, 3 km San Antonio Road: on/flying to flowers of “Tinajero A”, male, 14.XII.2007 (RCSZ). 21°21′S / 63°37′W, 600 m, 24 km W Villamontes, upper Rio Isiri: on/flying to flowers of “Tinajero B”, 1 ex., 10.I.2008 (DZUP). 21°40′S / 63°38′W, 793 m, 5 km W Santa Cruz-Yacuiba Highway, Comunidad Sanandita-La Granja: on/ flying to flowers of “Tinajero A”, female, 14.XII.2011 (RCSZ). 21°42′S / 63°36′W, 762 m, 48 km N Yacuiba, 3–5 km Sanandita Road: on/flying to flowers of “Tinajero A”, 2 males and female, 8.I.2010 (RCSZ).
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 18, DOI: 10.5281/zenodo.4645968
Pix2Shape: Towards Unsupervised Learning of 3D Scenes from Images using a View-based Representation
Creators: name: Rajeswar, Sai
name: Mannan, Fahim
name: Golemo, Florian
name: Parent-Lévesque, Jérôme
name: Vazquez, David
name: Nowrouzezahrai, Derek
name: Courville, Aaron
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We infer and generate three-dimensional (3D) scene information from a single input image and without supervision. This problem is under-explored, with most prior work relying on supervision from, e.g., 3D ground-truth, multiple images of a scene, image silhouettes or key-points. We propose Pix2Shape, an approach to solve this problem with four components: (i) an encoder that infers the latent 3D representation from an image, (ii) a decoder that generates an explicit 2.5D surfel-based reconstruction of a scene from the latent code (iii) a differentiable renderer that synthesizes a 2D image from the surfel representation, and (iv) a critic network trained to discriminate between images generated by the decoder-renderer and those from a training distribution. Pix2Shape can generate complex 3D scenes that scale with the view-dependent on-screen resolution, unlike representations that capture world-space resolution, i.e., voxels or meshes. We show that Pix2Shape learns a consistent scene representation in its encoded latent space and that the decoder can then be applied to this latent representation in order to synthesize the scene from a novel viewpoint. We evaluate Pix2Shape with experiments on the ShapeNet dataset as well as on a novel benchmark we developed, called 3D-IQTT, to evaluate models based on their ability to enable 3d spatial reasoning. Qualitative and quantitative evaluation demonstrate Pix2Shape's ability to solve scene reconstruction, generation, and understanding tasks.
description: This is a pre-print of an article published in International Journal of Computer Vision. The final authenticated version is available online at: https://doi.org/10.1007/s11263-020-01322-1
Water Management at UBC Okanagan Part 1: An Overview of Water Use
Creators: name: Clarke, Angele
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
BCS-BEC crossover in a $(t_{2g})^4$ Excitonic Magnet
Creators: name: Kaushal, Nitin
name: Soni, Rahul
name: Nocera, Alberto
name: Alvarez, Gonzalo
name: Dagotto, Elbio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The condensation of spin-orbit-induced excitons in $(t_{2g})^4$ electronic systems is attracting considerable attention. In the large Hubbard U limit, antiferromagnetism was proposed to emerge from the Bose-Einstein Condensation (BEC) of triplons ($J_{\textrm{eff}} = 1$). In this publication, we show that even for the weak and intermediate U regimes, the spin-orbit exciton condensation is possible leading also to staggered magnetic order. The canonical electron-hole excitations (excitons) transform into local triplon excitations at large U , and this BEC strong coupling regime is smoothly connected to the intermediate U excitonic insulator region. We solved the degenerate three-orbital Hubbard model with spin-orbit coupling ($λ$) in one-dimensional geometry using the Density Matrix Renormalization Group, while in two-dimensional square clusters we use the Hartree-Fock approximation (HFA). Employing these techniques, we provide the full $λ$ vs U phase diagrams for both one- and two- dimensional lattices. Our main result is that at the intermediate Hubbard U region of our focus, increasing $λ$ at fixed U the system transitions from an incommensurate spin-density-wave metal to a Bardeen-Cooper-Schrieffer (BCS) excitonic insulator, with coherence length r coh of O(a) and O(10a) in 1d and 2d, respectively, with a the lattice spacing. Further increasing $λ$, the system eventually crosses over to the BEC limit (with r coh << a).
Projective Measurement Scheme for Solid-State Qubits
Creators: name: Tian, L.
name: Lloyd, S.
name: Orlando, T. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an effective measurement scheme for the solid-state qubits that does {\bf not} introduce extra decoherence to the qubits until the measurement is switched on by a resonant pulse. The resonant pulse then maximally entangles the qubit with the detector. The scheme has the feature of being projective, noiseless, and switchable. This method is illustrated on the superconducting persistent-current qubit, but can be applied to the measurement of a wide variety of solid-state qubits, the {\bf direct} detection of the electromagnetic signals of which gives poor resolution of the qubit states.
description: published, PRB 67, R220505 (2003)
Using early data to estimate the actual infection fatality ratio from COVID-19 in France (Running title: Infection fatality ratio from COVID-19)
Creators: name: Roques, Lionel
name: Klein, Etienne
name: Papax, Julien
name: Sar, Antoine
name: Soubeyrand, Samuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Dynamical Systems (math.DS)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The first cases of COVID-19 in France were detected on January 24, 2020. The number of screening tests carried out and the methodology used to target the patients tested do not allow for a direct computation of the real number of cases and the mortality rate.In this report, we develop a 'mechanistic-statistical' approach coupling a SIR ODE model describing the unobserved epidemiological dynamics, a probabilistic model describing the data acquisition process and a statistical inference method. The objective of this model is not to make forecasts but to estimate the real number of people infected with COVID-19 during the observation window in France and to deduce the mortality rate associated with the epidemic.Main results. The actual number of infected cases in France is probably much higher than the observations: we find here a factor x 15 (95%-CI: 4-33), which leads to a 5.2/1000 mortality rate (95%-CI: 1.5 / 1000-11.7/ 1000) at the end of the observation period. We find a R0 of 4.8, a high value which may be linked to the long viral shedding period of 20 days.
title: Light Perception in Marine Diatoms and Characterization of a Novel Phytochrome from Phaeodactylum tricornutum
Creators: name: Depauw, Frauke A.
Publisher: name: The Open University
Year: 2014

description: Phytochromes are a family of red/far-red light photoreceptors widely distributed throughout the plant kingdom, among bacteria, fungi and even some non-photosynthetic bacteria. Because of the fast attenuation of red and far-red light in the water column, the existence of a red/far red light sensor as the phytochrome in marine organisms has long been a subject of discussion. In this thesis, I have started the characterization of the diatom phytochrome through biochemical and spectral approaches, molecular techniques, physiological studies and bio-informatics. This thesis reports the first evidence that the phytochrome, identified in the diatom genomes (named DPh), acts as photoreceptor for perceiving red/far-red light. The biochemical and spectral analyses of DPh from the diatom Phaeodactylum tricornutum have revealed that the absorption maxima of the Pr and Pfr forms of DPh (685 and 740 nm respectively) are more shifted toward the red end of the spectrum than the plant phytochromes. Studies through bio-informatic tools have shown that DPh has a domain organization similar to the bacterial phytochromes (Bphs) and that DPh, similarly to this phytochrome photoreceptor class, binds biliverdin as chromophore. The role of DPh as photoreceptor has also been studies by extensive analyses of red light-mediated gene expression. Several genes have been studied for their expression profiles in diverse light regimes (acute light response experiments with red and far red light treatments of different fluences), including genes involved in the chlorophyll and carotenoid biosynthesis, light harvesting and redox regulation. These studies have shown that a number of the studied genes are induced in various red/far-red light treatments, although it was not possible to reach a final and comprehensive conclusion about the role of DPh. In particular, it was not always clear if DPh acts as a photoreceptor and mediator in red/far-red light responses of these genes, although the results obtained offered important first hints into the complex gene regulation by red/far-red light in the marine environment. Preliminary biochemical analyses have also offered a glimpse in the complex regulation of DPh protein synthesis in cells grown in diverse light conditions. Curiously, DPh down-regulation by RNA interference in two diatom species induced the formation of abnormal cell chains and aggregates, possibly through altered cell division and neighbor perception processes. These data raise novel and interesting hypotheses about the role of a red light photoreceptor in controlling growth and life strategies in the oceans.
Neochrysoprasis zajciwi Franz 1969
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Neochrysoprasis
Neochrysoprasis zajciwi

description: Neochrysoprasis zajciwi Franz, 1969
 Dept. Santa Cruz. 17°29′96″S/ 63°39′13″W, 430 m, 5 km SSE of Buena Vista, Hotel Flora and Fauna: on/ flying to flowers of “ Sama blanca chica”, 6 males and female, 13–29.IX.2007 (RCSZ); 2 males, 14.IX.2007 (MNKM).
 Dept. Tarija. 21°18′S / 63°30′W, 500 m, 7 km W of Villamontes: on/flying to flowers of “Tinajero A”, male, 16.XII.2007, male, 5.I.2008 (RCSZ).
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 25, DOI: 10.5281/zenodo.4645968
GEMS: Galaxy Evolution from Morphologies and SEDs
Creators: name: Rix, Hans-Walter
name: Barden, Marco
name: Beckwith, Steven V. W.
name: Bell, Eric F.
name: Caldwell, John A. R.
name: Haeussler, Boris
name: Jahnke, Knud
name: Jogee, Shardha
name: McIntosh, Daniel H.
name: Meisenheimer, Klaus
name: Peng, Chien Y.
name: Sanchez, Sebastian F.
name: Somerville, Rachel S.
name: Wisotzki, Lutz
name: Wolf, Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: GEMS, Galaxy Evolution from Morphologies and SEDs, is a large-area (800 arcmin2) two-color (F606W and F850LP) imaging survey with the Advanced Camera for Surveys on HST. Centered on the Chandra Deep Field South, it covers an area of ~28'x28', or about 120 Hubble Deep Field areas, to a depth of m_AB(F606W)=28.3 (5sigma and m_AB(F850LP)=27.1 (5sigma) for compact sources. In its central ~1/4, GEMS incorporates ACS imaging from the GOODS project. Focusing on the redshift range 0.2<=z<=1.1, GEMS provides morphologies and structural parameters for nearly 10,000 galaxies where redshift estimates, luminosities and SEDs exist from COMBO-17. At the same time, GEMS contains detectable host galaxy images for several hundred faint AGN. This paper provides an overview of the science goals, the experiment design, the data reduction and the science analysis plan for GEMS.
description: 24 pages, TeX with 6 eps Figures; to appear in ApJ Supplement. Low resolution figures only. Full resolution at http://zwicky.as.arizona.edu/~rix/Misc/GEMS.ps.gz
title: Structure-Function Prediction of Insect Odorant Binding Proteins
Creators: name: Tzotzos, George T.
Publisher: name: The Open University
Year: 2013

description: This study concerns the application of bioinformatic tools for the elucidation of the biological function of insect general odorant and pheromone binding proteins (GOBPs / PBPs). These proteins are thought to function as transporters of volatile odorant molecules to olfactory receptors (ORs) situated in olfactory receptor neurons (ORNs) in insect antennae. Activation of ORNs by the odorant molecules gives rise to action potentials resulting in spatially defined patterns of glomerular activity in the brain, odour discrimination and concomitant behavioural response of the insect. The extent to which OBPs are critical for olfactory discrimination remains unclear. Numerous hypotheses have been postulated regarding the ability of OBPs to discriminate specific odorants and/or pheromones as well as their playing a role in the activation of odorant-responsive chemosensory neurons, in functioning as selective filters in odour recognition or participating in signal termination by inactivating odorant molecules. In silico binding studies of ligands and pheromones on OBPs derived from crystallographic studies or de novo homology modelling have been conducted primarily by docking and molecular dynamic (MD) simulations. It is shown that results obtained from such studies can provide useful insights and testable hypotheses with regard to the biochemical function of OBPs. Docking and MD simulations corroborate experimental evidence that the B. mori general odorant binding protein (BmorGOBP2) has considerably higher affinity than the B. mori pheromone binding protein (BmorPBPI) for the pheromonal components bombykol and bombykal and predict that this is also true for the modelled M. sexta proteins (MsexGOBP2 and MsexPBP1). In addition, steered molecular dynamics (SMD) simulations predict ligand entry and exit pathways into and out of BmorGOBP2. In addition, docking and molecular dynamics (MD) simulations with the highly homologous odorant binding proteins from A. gambiae (AgamOBP1), A. aegypti (AaegOBP1) and C. quinquefasciatus (CguiOBP1) provide evidence of differential capacity of these proteins to select ligands with specific structural characteristics.
Design of Sc-ECAL Prototype for CEPC and Performance of First Two Layers
Creators: name: Niu, YZ.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: As a future Higgs or Z factory, construction of the circular electron positron collider(CEPC) has been proposed to precisely measure Higgs bosons. A particle flow-oriented electromagnetic calorimeter (ECAL) and a hadronic calorimeter comprise a baseline design for the CEPC calorimetry system. The scintillator-tungsten ECAL (Sc-ECAL) prototype is being developed within the CEPC calorimetry working group. The Sc-ECAL is a sampling calorimeter consisting of alternating absorber layers and high granularity active layers. Each component of the active layer has been studied and optimized from a variety of aspects to meet the design requirements. The complete technological Sc-ECAL prototype will contain 30 layers of ECAL-based unit (EBU) boards alternating with 30 layers of the absorber. The first two layers of the prototype have been developed, and primary commissioning has been performed to validate their performance.