cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal Control of Brownian Inventory Models with Convex Inventory Cost: Discounted Cost Case
Creators: name: Dai, Jim
name: Yao, Dacheng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider an inventory system in which inventory level fluctuates as a Brownian motion in the absence of control. The inventory continuously accumulates cost at a rate that is a general convex function of the inventory level, which can be negative when there is a backlog. At any time, the inventory level can be adjusted by a positive or negative amount, which incurs a fixed positive cost and a proportional cost. The challenge is to find an adjustment policy that balances the inventory cost and adjustment cost to minimize the expected total discounted cost. We provide a tutorial on using a three-step lower-bound approach to solving the optimal control problem under a discounted cost criterion. In addition, we prove that a four-parameter control band policy is optimal among all feasible policies. A key step is the constructive proof of the existence of a unique solution to the free boundary problem. The proof leads naturally to an algorithm to compute the four parameters of the optimal control band policy.
Exploring Smart Commercial Building Occupants' Perceptions and Notification Preferences of Internet of Things Data Collection in the United States
Creators: name: Le, Tu
name: Wang, Alan
name: Yao, Yaxing
name: Feng, Yuanyuan
name: Heydarian, Arsalan
name: Sadeh, Norman
name: Tian, Yuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Data collection through the Internet of Things (IoT) devices, or smart devices, in commercial buildings enables possibilities for increased convenience and energy efficiency. However, such benefits face a large perceptual challenge when being implemented in practice, due to the different ways occupants working in the buildings understand and trust in the data collection. The semi-public, pervasive, and multi-modal nature of data collection in smart buildings points to the need to study occupants' understanding of data collection and notification preferences. We conduct an online study with 492 participants in the US who report working in smart commercial buildings regarding: 1) awareness and perception of data collection in smart commercial buildings, 2) privacy notification preferences, and 3) potential factors for privacy notification preferences. We find that around half of the participants are not fully aware of the data collection and use practices of IoT even though they notice the presence of IoT devices and sensors. We also discover many misunderstandings around different data practices. The majority of participants want to be notified of data practices in smart buildings, and they prefer push notifications to passive ones such as websites or physical signs. Surprisingly, mobile app notification, despite being a popular channel for smart homes, is the least preferred method for smart commercial buildings.
description: EuroS&P 2023 camera ready
Effects of sleep-deprivation on long-term depression of excitatory synaptic transmission in the ca1 region of the hippocampus
Creators: name: Tadavarty, Ramakrishna
Publisher: name: University of British Columbia
Year: 2012

description: In the central nervous system (CNS), synapses are considered to be the loci for memories. Activity dependent strengthening or weakening of synaptic strength via long-term potentiation (LTP) or depression (LTD), respectively, is widely postulated to underlie memory formation. Sleep, which is universally present across most species in the animal kingdom, aids learning and formation of memories. On the contrary, sleep-deprivation (short- or long- term), disrupts memory formation and task re-performance. Exactly how this happens is unclear. In the present study, we hypothesized that sleep-deprivation affects LTD, which may in-turn be responsible for cognitive deficits observed at the behavioral level. Following a 12 h period of sleep-deprivation, LTD of the population excitatory postsynaptic potentials (pEPSPs) induced using a 20 Hz, 30s tetanus to Schaffer collaterals in the CA1 region of the hippocampus, is enhanced in sleep-deprived (SD) rats. We investigated the role of metabotropic glutamate receptors (mGluRs), γ-Aminobutyric acid (GABA)-A receptors (GABAA-Rs), GABAB-Rs and N-methyl-D-aspartic acid receptors (NMDARs) in the LTD. The requirement of Ca²⁺ through L- and T- type voltage-gated calcium channels (VGCCs) and intracellular stores was also studied. Results indicate that mGluRs, a release of Ca²⁺ from intracellular stores and GABAB-Rs are required for LTD. Studies with mGluR antagonists suggest that while mGlu1Rs are involved in both short-term depression and LTD, mGlu5Rs participate mostly in LTD. CGP-55845, a GABAB-R antagonist, partially suppressed LTD in normally sleeping (NS) rats, while completely blocking in SD rats. Moreover, GS-39783, a positive allosteric modulator for GABAB-Rs, suppressed the pEPSP in SD, but not NS, rats. Since both mGluRs and GABAB-Rs seem to be involved in the LTD, especially in SD rats, changes in receptor expression pattern and/or dimerization were examined using immunohistochemical, co-localization and co-immunoprecipitation (co-IP) techniques. Sleep-deprivation induced an increase in GABAB-R1 and mGlu1αR expression in the CA1 region of the hippocampus. In addition, co-localization and heterodimerization between mGlu1αR/GABAB-R1 and mGlu1αR/GABAB-R2 is enhanced in SD rats. Taken together, our findings present a novel form of LTD sensitive to the activation of mGluRs and GABAB-Rs, and reveal, for the first time, that sleep-deprivation induces alterations in the expression and dimerization of these receptors.
Consorcio eSCIRE
Creators: name: Lopez, Nydia
name: Torres, Joel
Publisher: name: Zenodo
Year: 2023

description: “Identificadores persistentes (PIDs) y ciencia abierta en Latinoamérica” (#PIDsLATAM23) organizado por DataCite, ORCID y ROR es un evento enteramente dedicado a los identificadores persistentes y la ciencia abierta en la región. Dirigido a directores y gestores de investigación, bibliotecarios y personal técnico, en este encuentro hablamos sobre los beneficios de los identificadores persistentes y cómo su adopción contribuye a la ciencia abierta y a un ecosistema de investigación más abierto y robusto. Este evento se realiza en colaboración con la csv,conf,v7. Esta presentación de Nydia Lopez y Joel Torres ofrece una visión de la adopción de PIDs de eSCIRE.
Liouville coherent states
Creators: name: Ringel, Matouš
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For a certain class of open quantum systems there exists a dynamical symmetry which connects different time-evolved density matrices. We show how to use this symmetry for dynamics in the Liouville space with time-dependent parameters. This allows us to introduce a concept of generalized coherent states (e.g. density matrices) in the Liouville space. Dynamics of this class of density matrices is characterized by robustness with respect to any time-dependent perturbations of the couplings. We study their dynamical context while focusing on common physical situations corresponding to compact and non-compact symmetries.
description: 6 pages, 3 figures, accepted to EPL
Multiparameter estimation perspective on non-Hermitian singularity-enhanced sensing
Creators: name: Naikoo, Javid
name: Chhajlany, Ravindra W.
name: Kolodynski, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Describing the evolution of quantum systems by means of non-Hermitian generators opens a new avenue to explore the dynamical properties naturally emerging in such a picture, e.g. operation at the so-called exceptional points, preservation of parity-time symmetry, or capitalising on the singular behaviour of the dynamics. In this work, we focus on the possibility of achieving unbounded sensitivity when using the system to sense linear perturbations away from a singular point. By combining multiparameter estimation theory of Gaussian quantum systems with the one of singular-matrix perturbations, we introduce the necessary tools to study the ultimate limits on the precision attained by such singularity-tuned sensors. We identify under what conditions and at what rate can the resulting sensitivity indeed diverge, in order to show that nuisance parameters should be generally included in the analysis, as their presence may alter the scaling of the error with the estimated parameter.
description: 20 pages with appendices. Includes discussion of system stability and the lasing threshold
Scaling Cellular Aggregate Production in a Microwell System
Creators: name: Kondro, Douglas A.
Publisher: name: Graduate Studies
Year: 2020
Subjects: subject: Tissue Engineering
subject: Type 1 diabetes
subject: Micromanufacturing
subject: Gas diffusion
subject: Biology--Cell
subject: Engineering--Biomedical
subject: Engineering--Mechanical

description: Microtissues, in the form of cellular aggregates, offer a promising format for cell-based therapies, such as the treatment of type 1 diabetes with beta cell replacement. One major challenge is producing a sufficient quantity of microtissue for clinical use. For instance, type 1 diabetes requires approximately 1 million cellular aggregates for treatment of a single individual. Static culture methods of producing aggregates, such as the microwell system, offer an accessible format of producing high quality, size-controlled cellular aggregates, however they cannot easily generate the quantity required for a clinical treatment. This thesis scales an existing microwell format by producing a robust, self-contained, multilayered microwell bioreactor capable of generating over 250,000 cellular aggregates in a well plate footprint. The design of the microwell bioreactor consists of a sealed chamber where cells aggregate on thin sheets of microwells in the device. The microwells are made with an oxygen permeable polymer to facilitate gas exchange in the sealed system, that was demonstrated to deliver approximately 4 times the oxygen to cells in comparison with the well plate format. The design process utilizes hot-embossing, allowing for efficient and scalable manufacturing, with a demonstrated cycle time as low as 15 seconds per microwell sheet. The final device is robust, capable of withstanding centrifugation up to 2000 g, and autoclaving sterilization. Further, the protocol for cell culture is simplified as it allows for removal of >97% of media during a media change without disturbing aggregates, and removal of >98% of cellular aggregates after long term culturing. Biological validation and demonstration of clinical utility was performed using 12 donor islet batches. The microwell bioreactor could scale the production of functional pseudoislets in the form of size-controlled cellular aggregates. Pseudoislets were demonstrated to have indistinguishable functional performance in compared to previously published methods. Applicability of this novel system was also demonstrated for other diseases by successfully differentiating pluripotent stem cells and aggregating testicular organoids. The unique design of the microwell bioreactor provides a straightforward tool to enable researchers to immediately scale static culture experiments, allowing for translation of cell-based therapies to clinical use.
Light neutralino in the MSSM: An update with the latest LHC results
Creators: name: Calibbi, Lorenzo
name: Ota, Toshihiko
name: Takanishi, Yasutaka
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the scenario of light neutralino dark matter in the minimal supersymmetric standard model, which is motivated by the results of some of the direct detection experiments --- DAMA, CoGENT, and CRESST. We update our previous analysis with the latest results of the LHC. We show that new LHC constraints disfavour the parameter region that can reproduce the results of DAMA and CoGENT.
description: 4 pages, 4 figures, to appear in the conference proceedings of TAUP 2011, Munich Germany, 5-9 September 2011
Parasabella bioculata Capa & Murray 2015, SP. NOV.
Creators: name: Capa, María
name: Murray, Anna
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Sabellida
Sabellidae
Parasabella
Parasabella bioculata

description: PARASABELLA BIOCULATA SP. NOV. Additional material examined: Australia. Western Australia: AM W.46997 (one), Ningaloo Reef, north of Tantabiddi, lagoon off Jurabi Point, patch reef, 21°51′41″S, 113°59′46″E, reef rock with brown algae, 3.5 m, vi.2008. New South Wales: AM W.46840 (one), Port Stephens, Nelson Bay, 32°42′56″S, 152°08′58″E, soft coral, 11.3 m, ii.2011. Timor-Leste. AM W.46835 (one), east of Atauro Island, Inner Reef, reef slope, 8°14′30″S, 125°36′49″E, dead coral rubble and algae, 14 m, ix.2012.
description: Published as part of Capa, María & Murray, Anna, 2015, Integrative taxonomy of Parasabella and Sabellomma (Sabellidae: Annelida) from Australia: description of new species, indication of cryptic diversity, and translocation of some species out of their natural distribution range, pp. 764-811 in Zoological Journal of the Linnean Society 175 (4) on page 809, DOI: 10.1111/zoj.12308, http://zenodo.org/record/5340225
Fashion, Cooperation, and Social Interactions
Creators: name: Cao, Zhigang
name: Gao, Haoyu
name: Qu, Xinglong
name: Yang, Mingmin
name: Yang, Xiaoguang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Multiagent Systems (cs.MA)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Fashion plays such a crucial rule in the evolution of culture and society that it is regarded as a second nature to the human being. Also, its impact on economy is quite nontrivial. On what is fashionable, interestingly, there are two viewpoints that are both extremely widespread but almost opposite: conformists think that what is popular is fashionable, while rebels believe that being different is the essence. Fashion color is fashionable in the first sense, and Lady Gaga in the second. We investigate a model where the population consists of the afore-mentioned two groups of people that are located on social networks (a spatial cellular automata network and small-world networks). This model captures two fundamental kinds of social interactions (coordination and anti-coordination) simultaneously, and also has its own interest to game theory: it is a hybrid model of pure competition and pure cooperation. This is true because when a conformist meets a rebel, they play the zero sum matching pennies game, which is pure competition. When two conformists (rebels) meet, they play the (anti-) coordination game, which is pure cooperation. Simulation shows that simple social interactions greatly promote cooperation: in most cases people can reach an extraordinarily high level of cooperation, through a selfish, myopic, naive, and local interacting dynamic (the best response dynamic). We find that degree of synchronization also plays a critical role, but mostly on the negative side. Four indices, namely cooperation degree, average satisfaction degree, equilibrium ratio and complete ratio, are defined and applied to measure people's cooperation levels from various angles. Phase transition, as well as emergence of many interesting geographic patterns in the cellular automata network, is also observed.
description: 21 pages, 12 figures
Microscopic theory of supercurrent suppression by gate-controlled surface depairing
Creators: name: Chakraborty, Subrata
name: Nikolić, Danilo
name: Cuevas, Juan Carlos
name: Giazotto, Francesco
name: Di Bernardo, Angelo
name: Scheer, Elke
name: Cuoco, Mario
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently gate-mediated supercurrent suppression in superconducting nano-bridges has been reported in many experiments. This could be either a direct or an indirect gate effect. The microscopic understanding of this observation is not clear till now. Using the quasiclassical Green's function method, we show that a small concentration of magnetic impurities at the surface of the bridges can significantly help to suppress superconductivity and hence the supercurrent inside the systems while applying a gate field. This is because the gate field can enhance the depairing through the exchange interaction between the magnetic impurities at the surface and the superconductor. We also obtain a \emph{symmetric} suppression of the supercurrent with respect to the gate field, a signature of a direct gate effect. Future experiments can verify our predictions by modifying the surface with magnetic impurities.
Mike Canfield and Frank Sturgis interview
Publisher: name: Columbia University
Year: 2019
Subjects: Spies

description: Recorded interview with CIA operative involved in assassination program, "operation 40," targetting Cubans and other political adversaries in Latin America. Becomes clear this is a phone conversation as the operator periodically interrupts asking for more money and we hear the coins being registered. Discuss Dick Gregory (and "radical left" accusations of CIA involvement in Kennedy assassination
Single-photon, cavity-mediated gates: detuning, losses, and non-adiabatic effects
Creators: name: Gea-Banacloche, Julio
name: Pedrotti, Leno M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study several extensions of the single-photon, cavity-mediated quantum logical gates recently proposed by Koshino, Ishizaka and Nakamura: to a double-sided cavity configuration, to the case where the two atomic ground states are nondegenerate, and to include nonadiabatic corrections. Our analysis can be used to estimate the effects of various imperfections, and to prepare the way for a proof-of-principle demonstration with present technology. An interesting result is that the leading correction to the adiabatic approximation can be made to vanish for a suitable choice of detunings, provided the cavity is "good enough" (high enough ratio of coupling to loss). This could significantly relax the need for long single-photon pulses.
description: 11 pages, 9 figures; to appear in Physical Review A
Multi-scale comparison of native and exotic communities in the Garry oak ecosystem of British Columbia
Creators: name: Bennett, Joseph Russell
Publisher: name: University of British Columbia
Year: 2012

description: Fundamental debates persist regarding the ecology of species invasions, the risk posed by exotic species, and the most effective management to diminish invasion and promote native-dominated ecosystems. Using vascular plant surveys at three scales (between small-island and ‘mainland’ patches, among patches, within patches) from 86 patches in a threatened meadow ecosystem, I addressed the following questions arising from such debates: 1) Are latent invasions prevalent among exotics, and if so, among which species? 2) What are the relative roles of latent invasions, competition and environmental response in determining native versus exotic biogeographic patterns? 3) How can native and exotic species distribution and richness models at multiple scales be used to improve conservation management? Species-level analyses demonstrated latent invasions among and within patches for short-dispersing exotics, and a positive relationship between exotic species’ abundances and minimum residence time in the study region, suggesting that population expansion of some exotic species is at an early stage. A mix of scale-dependent concordant and discordant relationships with environmental variables, rather than competition, appeared to be the primary determinant of native versus exotic species richness and composition patterns. While incomplete invasion of exotics did not produce substantially different community-level biogeographic patterns between native and exotic communities, exotics were dominated by long-dispersing ruderal species more abundant on disturbed patches, while dominant natives were often short-dispersing stress-tolerant species more abundant on isolated patches. Such complexities, overlooked in most previous comparative analyses of native and exotic communities, can be used to predict future patterns and prescribe efficient management. In addition, spatially explicit distribution models revealed greater predictability for native species, and greater predictability among than within patches. Environmental variables related to native and exotic distributions were often shared within patches. Thus, management prescriptions applied among patches are likely to be most successful and predictable. Finally, native species at risk were more common on isolated small-island patches, contrary to biogeographic theory. Protection of small-island patches would be the most efficient conservation strategy for the study system. Interventions to control large exotic species populations, especially where propagule pressure from nearby disturbed areas is high, represent a far less efficient strategy.
Small Molecule Activation at Ruthenium NCN and CCC-Pincer Complexes with a Central N-heterocyclic Carbene
Creators: name: Jiang, Yanmin
Publisher: name: Graduate Studies
Year: 2020
Subjects: subject: Pincer ligand design
subject: bond activations
subject: Chemistry--Inorganic

description: The design of pincer ligands is one of the most crucial topics in organometallic chemistry, and these tridentate, meridional frameworks have been extensively investigated due to the ease by which their steric and electronic properties can be tuned. One of the most important features of transition metal pincer complexes is their reactivity towards bond activation of small molecules such as H2O, O2, CH4, CO2, N2 and NH3 that are naturally abundant, or renewable feedstocks. Meanwhile, studying the way in which these small molecules behave and react is of great importance.This thesis presents the synthesis of a novel, transformable NCN pincer ligand featuring a six-membered N-heterocyclic carbene (NHC) central donor and sterically encumbered pyridyl pendant arms. This ligand was installed onto transition metals through transmetalation. The uncharacteristic square pyramidal geometry of NCN-nickel and ruthenium complexes reflected the steric impact of the pendant pyridine rings. The ruthenium-mediated azide-nitrile cycloaddition reaction led to the formation of tetrazolato ligands. Rollover cyclometalation occurred in the rhodium complex during the synthesis, which resulted in a novel monoanionic NCC pincer scaffold. The shortest Ru-CNHC and Rh-CNHC bonds on record for the respective metal complexes were measured in their derivatives, attesting to the superior binding ability of the developed NCN and NCC-pincer ligands.The parent NCN-ruthenium pincer system can be transformed into an unprecedented, dianionic LX2-type CCC-ruthenium pincer scaffold via double rollover cyclometalation using potassium hydride. Monodentate phosphine ligands with bulky substituents proved effectively in stabilizing such a pincer framework. These metal complexes reacted with small molecules like H2, N2, CO2 and P4, and the binding mode of compressed dihydride ligand was confirmed from the X-ray crystallographic data, together with multinuclear NMR spectroscopic interpretations. Catalytic H/D scrambling between benzene-d6 and ammonia mediated by the CCC-ruthenium pincer complex incorporating PCy3 and compressed dihydride ligands, was accomplished through the activation of C-D and N-H bonds. Furthermore, this compressed dihydride nature allowed for the facile processes of olefin hydrogenation and dehydrogenative coupling of ammonia-borane, demonstrating versatile catalytic activities of the developed CCC-ruthenium pincer system herein.
Engineering of Gelatin Methacryloyl (GelMA) Hydrogels for Developing Biomimetic Tissue Constructs
Creators: name: Janmaleki, Mohsen
Publisher: name: Graduate Studies
Year: 2020
Subjects: subject: Hydrogel
subject: Organ-on-a-chip
subject: Imprinted substrates
subject: Mechanical behavior
subject: Myelination
subject: schwann cells
subject: Bioprinter
subject: Thermoreversible crosslinking
subject: GelMA
subject: Fidelity
subject: Aneurysm
subject: Fluid-structure interaction
subject: Hydrogel-based organ-on-chip
subject: Biology--Cell
subject: Biology--Neuroscience
subject: Engineering--Biomedical
subject: Engineering--Materials Science
subject: Engineering--Mechanical

description: Three-dimensional (3D) cell culture offers a more physiologically-relevant context for disease modeling and drug screening. Hydrogel-based biomaterials support the long-term culture of cells in 3D and enhance memetic cell-cell and cell-matrix interactions. Herein, gelatin methacryloyl (GelMA) hydrogel, a well-known photo-crosslinkable hydrogel, was selected for engineering of different tissue constructs.First, the practicability of imprinting cell topography on GelMA hydrogel was investigated. A novel method was developed to fabricate cell-like niches over the hydrogel’s substrate, and its effects on cytocompatibility and drug susceptibility of breast cancer cells were studied. Second, GelMA hydrogel was tuned in terms of mechanical properties and porosity to facilitate in vitro myelination of dorsal root ganglia (DRG) neurons by Schwann cells (SCs). It was shown that the tuned GelMA enhanced single axonal generation (unlike collagen) and promoted DRGs’ interaction with SCs (unlike PDL). Third, the role of temperature on bioprintability of GelMA bioinks in a two-step crosslinking strategy was investigated. Lowering the temperature can enhance the physical gelation of GelMA and consequently improve filament formation. Results showed that the decrease in the temperature could improve the printability and shape fidelity of the deposited hydrogel, particularly at 15 °C. Time-dependent mechanical testing confirmed higher elastic properties of the collected hydrogel at the lower temperature.Fourth, a hydrogel-based 3D human intracranial aneurysm (IA) model was developed using liquid assisted injection molding. With clinically relevant dimensions and tuned fluidic and matrix properties, the essential endothelium was successfully lined inside the reconstructed IA over pre-cultured smooth muscle cells. Based on the characterized viscoelastic properties of the GelMA hydrogel and with the help of a fluid-structure interaction model, the capability of the IA construct model in predicting the response of the IA to different fluid flow profiles was demonstrated.Finally, using the techniques developed in this thesis, a new approach is suggested to fabricate a fully hydrogel-based platform for tissue engineering and organ-a-chip applications.
Sabellomma cupoculata Capa & Murray 2015, SP. NOV.
Creators: name: Capa, María
name: Murray, Anna
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Sabellida
Sabellidae
Sabellomma
Sabellomma cupoculata

description: SABELLOMMA CUPOCULATA SP. NOV. Additional material examined: Australia. Western Australia: AM W.47189 (two), south-west tip of West Lewis Island, 20°36′15″S, 116°35′43″E, gravel, 10 m, 27.vii.2000, WA 623; AM W.47190 (one), Dampier Archipelago, Legendre Island, 1 km north-east of Cape Legendre, 20°21′16″S, 116°50′34″E, under small boulders, 27 m, 6.viii.2000, WA 644. Northern Territory: AM W.47188 (one), Darwin Harbour, North Shell Island, 12°29′48″S, 130°53′12″E, sponges and algae in coral rubble, 5–8 m, 16.vii.1993, NT 346. Queensland: AM W.30495 (one), Torres Strait, Prince of Wales Island, bommies northwest of Bamfield Point, 10°41′08″S, 142°06′02″E, live coral, 3 m, 3.x.2006, QLD 1927; MAGNT W23104 (five, one on SEM pin = AM W.39545.001), Lizard Island, off North Head, 14°38′44″S, 145°27′12″E, 12 m, 14.iv.2008, CReefs Stn CGLI –025; AM W.37061 (one = PS 41), Lizard Island, MacGillivray Reef, 14°39′23″S, 145°29′31″E, coral rubble, 22 m, 29.viii.2010, MI QLD 2197, CReefs Stn LI10–028; AM W.37029–37030 (two, one = PS 06), Lizard Island, High Rock, 14°49′34″S, 145°33′08″E, coral rubble, 20.1 m, 11.ix.2010, MI QLD 2233, CReefs Stn LI10–134; AM W.37057 (one = PS 37), MacGillivray Reef, deep reef slope, 14°39′25″S, 145°28′22″E, coral rubble, 30 m, 4.ix.2010, CReefs Stn LI 10–073; AM W.37060 (one = PS 40), Heron Island, Sykes reef, 23°25′57″S, 151°02′02″E, coarse coral rubble, 30 m, 14.xi.2009, MI QLD 2073, CReefs.
description: Published as part of Capa, María & Murray, Anna, 2015, Integrative taxonomy of Parasabella and Sabellomma (Sabellidae: Annelida) from Australia: description of new species, indication of cryptic diversity, and translocation of some species out of their natural distribution range, pp. 764-811 in Zoological Journal of the Linnean Society 175 (4) on page 810, DOI: 10.1111/zoj.12308, http://zenodo.org/record/5340225
Resilience within the Context of Refugee Youth Adaptation to New Life in Canada
Creators: name: Jafari, Helia
Publisher: name: Graduate Studies
Year: 2020
Subjects: subject: Refugee youth
subject: Resilience
subject: Trauma
subject: Classic Grounded Theory research
subject: Positive adaptation
subject: Postmigration adaptation
subject: Psychology
subject: FOS: Psychology
subject: Clinical
subject: Developmental

description: In response to recent refugee crises around the world, scholars have called for research on resilience among war-affected children and youth as an important area of focus that offers culturally and contextually relevant implications for effective support services. While empirical research on the resilience of refugee youth has been gradually increasing, the current scholarship still lacks social, cultural, and contextual sensitivity. As such, this dissertation research, which consists of three conceptually linked manuscripts, represents a purposeful attempt to address this gap by exploring the resilience of refugee youth in a postmigration Canadian context, with contributions to research, policy, and practice. Specifically, Manuscript 1 centres on the definition of refugee youth resilience as it relates to postmigration resettlement and explores the theoretical connections between resilience and positive adaptation. This manuscript proposes a culturally and contextually relevant conceptualization of resilience from the bioecological lens, integrating the three intertwined developmental, acculturative, and psychological perspectives. Manuscript 2 focuses on a critical and extensive review of the extant literature on refugee children and youth. It synthesizes empirical evidence from scholarship on young refugees’ resilience and presents a host of biological, psychological, social and cultural determinants of resilience, which interact with one another across multiple levels of social and ecological contexts to determine adaptive responds to stressful experiences. Finally, Manuscript 3 reflects qualitative research on pathways leading to positive adaptation to a Canadian postmigration context to provide knowledge about the pathways leading to resilience among refugee youth. It outlines a classic grounded theory study that generated a substantive theory conceptually explaining the underlying process of positive adaptation from the perspectives of 15 Canadian refugee youth. Together, findings from this dissertation research spur integration of knowledge and strategies to inform practice and policies to mitigate risk and promote resilience in multiple systems that shape refugee youth adaptation over the resettlement course.
Cross-correlating the Thermal Sunyaev-Zel'dovich Effect and the Distribution of Galaxy Clusters
Creators: name: Fang, Wenjuan
name: Kadota, Kenji
name: Takada, Masahiro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the analytical formulas, derived based on the halo model, to compute the cross-correlation between the thermal Sunyaev-Zel'dovich (SZ) effect and the distribution of galaxy clusters. By binning the clusters according to their redshifts and masses, this cross-correlation, the so-called stacked SZ signal, reveals the average SZ profile around the clusters. The stacked SZ signal is obtainable from a joint analysis of an arcminute-resolution cosmic microwave background (CMB) experiment and an overlapping optical survey, which allows for detection of the SZ signals for clusters whose masses are below the individual cluster detection threshold. We derive the error covariance matrix for measuring the stacked SZ signal, and then forecast for its detection from ongoing and forthcoming combined CMB-optical surveys. We find that, over a wide range of mass and redshift, the stacked SZ signal can be detected with a significant signal to noise ratio (total S/N \gsim 10), whose value peaks for the clusters with intermediate masses and redshifts. Our calculation also shows that the stacking method allows for probing the clusters' SZ profiles over a wide range of scales, even out to projected radii as large as the virial radius, thereby providing a promising way to study gas physics at the outskirts of galaxy clusters.
description: 11 pages, 6 figures, 3 tables, minor revisions reflect PRD published version
The X-ray cluster survey with eROSITA: forecasts for cosmology, cluster physics and primordial non-Gaussianity
Creators: name: Pillepich, Annalisa
name: Porciani, Cristiano
name: Reiprich, Thomas H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Starting in late 2013, the eROSITA telescope will survey the X-ray sky with unprecedented sensitivity. Assuming a detection limit of 50 photons in the (0.5-2.0) keV energy band with a typical exposure time of 1.6 ks, we predict that eROSITA will detect ~ 9.3 X 10^4 clusters of galaxies more massive than 5 X 10^13 Msun/h, with the currently planned all-sky survey. Their median redshift will be z ~ 0.35. We perform a Fisher-matrix analysis to forecast the constraining power of eROSITA on the LambdaCDM cosmology and, simultaneously, on the X-ray scaling relations for galaxy clusters. Special attention is devoted to the possibility of detecting primordial non-Gaussianity. We consider two experimental probes: the number counts and the angular clustering of a photon-count limited sample of clusters. We discuss how the cluster sample should be split to optimize the analysis and we show that redshift information of the individual clusters is vital to break the strong degeneracies among the model parameters. For example, performing a "tomographic" analysis based on photometric-redshift estimates and combining 1- and 2-point statistics will give marginal 1-sigma errors of Delta(sigma_8) ~ 0.036 and Delta(Omega_m) ~ 0.012 without priors, and improve the current estimates on the slope of the luminosity-mass relation by a factor of 3. Regarding primordial non-Gaussianity, eROSITA clusters alone will give Delta(f_NL) = 9, 36, 144 for the local, orthogonal and equilateral model, respectively. Measuring redshifts with spectroscopic accuracy would further tighten the constraints by nearly 40 per cent (barring f_NL which displays smaller improvements). Finally, combining eROSITA data with the analysis of temperature anisotropies in the cosmic microwave background by the Planck satellite should give sensational constraints on both the cosmology and the properties of the intracluster medium.
description: 27 pages, 14 figures, 9 tables. Accepted for publication on MNRAS
Impact on feeding behavior of beef calves during preconditioning on ranch and commingling on arrival at the feedlot
Creators: name: Hodder, Abigail
Publisher: name: Graduate Studies
Year: 2022
Subjects: subject: feeding behaviour
subject: animal welfare
subject: calf health
subject: weaning
subject: rumination
subject: activity
subject: Agriculture--Animal Culture and Nutrition
subject: Biology--Veterinary Science

description: Preconditioning refers to management practices implemented at the ranch to promote an easier transition to the feedlot; it is known to improve the health and welfare of beef calves. For this thesis, feeding behaviour and activity of preconditioned calves was studied from the ranch to feedlot and compared to other sources of calves, with a specific focus on the impact of bunk exposure on feeding behaviour at the feedlot. Behavioural observations were used to determine bunk attendance and CowManager® technology for time spent “eating”, “ruminating”, and “activity” (active and not active) of preconditioned, ranch-sourced, and auction-derived calves. At the ranch, bunk attendance was significantly improved for preconditioned calves between all consecutive days except days 4 and 5. Furthermore, preconditioned calves had increased bunk attendance and time spent eating at the feedlot compared to other calf sources. Preconditioned calves spent less time active, and there was no significant difference between calf sources in time spent ruminating. These results were similar when comparing preconditioned and auction-derived calves within commingled pens, providing evidence that preconditioned calves outperformed auction-derived calves during the first week after arrival at the feedlot.
Ultrakurzpulslaserstrukturierung von LiFePO$_{4}$- und LiMn$_{2}$O$_{4}$-Dickschichtelektroden für Lithium-Ionen-Zellen
Creators: name: Mangang, Melanie
Publisher: name: Karlsruhe
Year: 2019
Subjects: LiFePO4
LiMn2O4
three-dimensional battery
ultrafast laser processing

description: Die elektrochemischen Eigenschaften von Lithium-Ionen-Zellen können durch eine Laser-Mikrostrukturierung der LiFePO$_{4}$-Kompositschicht verbessert werden. Durch eine Verkürzung der Laserpulsdauer von Nanosekunden zu Pikosekunden bzw. Femtosekunden können thermische Verluste verringert werden. Die Abtragsrate wird dadurch deutlich gesteigert. Dies zeigte sich in einer Vervierfachung des Aspektverhältnisses. Es wurde daher Ultrakurzpulslaserstrahlung verwendet, um Mikrostrukturen in kommerziellen und selbst hergestellten LiFePO$_{4}$-Kompositschichten zu generieren. Die angefertigten Elektrodenschlicker wurden zunächst charakterisiert und der Einfluss der Viskosität auf den Schichtherstellungsprozess untersucht. Für alle Zellen mit strukturierten Kathoden konnte gezeigt werden, dass die Kapazitätsvorhaltung für Lade-/Entladeraten ≥ C/2 verbessert sowie der Strom in den Zyklovoltammogrammen um bis zu einem 4fachen Wert erhöht werden konnte. Zurückzuführen war dies unter anderem auf eine verbesserte Lithium-Ionen-Diffusion durch die laser-generierte Grenzfläche zwischen Aktivmaterial und flüssigem Elektrolyt. Zur Beschreibung der Lithium-Ionen-Diffusion wurde der chemische Diffusionskoeffizient herangezogen und dieser mittels elektrochemischer Methoden bestimmt. Hierbei wurde der Einfluss der Elektrodenfläche diskutiert. Es konnte gezeigt werden, dass durch eine Strukturierung der Kathodenoberfläche der über die Stöchiometrie gemittelte Diffusionskoeffizient um eine Größenordnung vergrößert wurde.
Gestión de identificadores persistentes consorciados
Creators: name: Saavedra Ochoa, Paula
Publisher: name: Zenodo
Year: 2023
Subjects: PIDsLATAM23
Ciencia Abierta
Identificadores persistentes
PIDs
Persistent identifiers
Open science

description: Identificadores persistentes (PIDs) y ciencia abierta en Latinoamérica” (#PIDsLATAM23) organizado por DataCite, ORCID y ROR es un evento enteramente dedicado a los identificadores persistentes y la ciencia abierta en la región. Dirigido a directores y gestores de investigación, bibliotecarios y personal técnico, en este encuentro hablamos sobre los beneficios de los identificadores persistentes y cómo su adopción contribuye a la ciencia abierta y a un ecosistema de investigación más abierto y robusto. Este evento se realiza en colaboración con la csv,conf,v7. Esta presentación de Paula Saavedra Ochoa ofrece una visión de la estrategia y adopción de PIDs de Consortia.
Theorem proving for prenex Gödel logic with Delta: checking validity and unsatisfiability
Creators: name: Baaz, Matthias
name: Ciabattoni, Agata
name: Fermüller, Christian G
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.1

description: Gödel logic with the projection operator Delta (G_Delta) is an important many-valued as well as intermediate logic. In contrast to classical logic, the validity and the satisfiability problems of G_Delta are not directly dual to each other. We nevertheless provide a uniform, computational treatment of both problems for prenex formulas by describing appropriate translations into sets of order clauses that can be subjected to chaining resolution. For validity a version of Herbrand's Theorem allows us to show the soundness of standard Skolemization. For satisfiability the translation involves a novel, extended Skolemization method.
description: 23 pages, accepted for LMCS (Logical Methods in Computer Science)
A goodness-of-fit test for the bivariate necessary-but-not-sufficient relationship
Creators: name: Ilagan, Michael John
Publisher: name: Graduate Studies
Year: 2020
Subjects: subject: logical asymmetries
subject: goodness-of-fit
subject: beta distribution
subject: intelligence
subject: creativity
subject: Statistics
subject: FOS: Mathematics

description: In the social sciences, theory often casts bivariate relationships between constructs in terms of logical asymmetries. For example, in psychology, one theory is that intelligence is necessary but not sufficient for creativity. But as average-based linear models fail to accommodate nuances of logical asymmetries, a mismatch between theory and method is common in the literature. Recent methodological work proposed the Linear Ceiling and Floor Probability Region (LCFPR) model, which analyzes bivariate relationships in terms of necessity and sufficiency. However, an erroneous treatment of nested models and a lack of a formal goodness-of-fit test remain unaddressed in the LCFPR framework. In this thesis, I propose a goodness-of-fit test for LCFPR that addresses such shortcomings. A simulation study shows that, using a nonparametric quantile, the power and size of the test are largely acceptable. Analyses of real datasets demonstrate the proposed procedure. Conclusions and future directions are outlined in the final chapter.
Tree method for quantum vortex dynamics
Creators: name: Baggaley, Andrew W.
name: Barenghi, Carlo F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a numerical method to compute the evolution of vortex filaments in superfluid helium. The method is based on a tree algorithm which considerably speeds up the calculation of Biot-Savart integrals. We show that the computational cost scales as Nlog{(N) rather than N squared, where $N$ is the number of discretization points. We test the method and its properties for a variety of vortex configurations, ranging from simple vortex rings to a counterflow vortex tangle, and compare results against the Local Induction Approximation and the exact Biot-Savart law.
description: 12 pages, 10 figures
The Systemic Impact of Deplatforming on Social Media
Creators: name: Mekacher, Amin
name: Falkenberg, Max
name: Baronchelli, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: J.4

description: Deplatforming, or banning malicious accounts from social media, is a key tool for moderating online harms. However, the consequences of deplatforming for the wider social media ecosystem have been largely overlooked so far, due to the difficulty of tracking banned users. Here, we address this gap by studying the ban-induced platform migration from Twitter to Gettr. With a matched dataset of 15M Gettr posts and 12M Twitter tweets, we show that users active on both platforms post similar content as users active on Gettr but banned from Twitter, but the latter have higher retention and are 5 times more active. Then, we reveal that matched users are more toxic on Twitter, where they can engage in abusive cross-ideological interactions, than Gettr. Our analysis shows that the matched cohort are ideologically aligned with the far-right, and that the ability to interact with political opponents may be part of the appeal of Twitter to these users. Finally, we identify structural changes in the Gettr network preceding the 2023 Brasilia insurrections, highlighting how deplatforming from mainstream social media can fuel poorly-regulated alternatives that may pose a risk to democratic life.
description: 12 pages, 6 figures
Supporting the success of online students who are deaf
Creators: name: Marquart, Matthea S.
name: Counselman Carpenter, Elisabeth A.
Publisher: name: Columbia University
Year: 2017
Subjects: Social service
Deaf students
Distance education
Distance education students

description: One social justice victory of online education is the ability to expand access to higher education and serve a diverse student body. This roundtable discussion gave instructors and administrators the chance to share strategies and tools for supporting the success of students who are deaf. Online courses with synchronous components generally include audio elements in the form of live virtual classes; homework assignments that include videos, podcasts, or other media; and student-generated media assignments such as introductory videos or video role plays. To enable students who are deaf to fully participate in these courses, school administrators and instructors need to be ready with tools and strategies, such as live captioners or American Sign Language translators, media captioners, and plans for inclusive lessons.
This roundtable discussion provided a forum for those with experience supporting the success of students who are deaf to share their experiences, and for those without experience to learn and ask questions. The goals for this session included:
1) Sharing concrete tools and resources that can support online students who are deaf
2) Sharing strategies for inclusive lesson planning and instructional design
3) Identifying areas where schools of social work can better prepare to support students who are deaf