cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Future Refinery GHG Emissions: Evaluation of Potential Mitigation Technologies and Responses to Changing Fuel Demand
Creators: name: Motazedi, Kavan
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Engineering

description: North American refineries are under pressure to deliver GHG emissions reductions and concurrently respond to changes in the demand for the products that they sell. In this thesis, a framework is developed based on Life Cycle Assessment (LCA), and energy systems modelling to evaluate these challenges. A techno-economic and LCA evaluation of a set of mitigation technologies is conducted by further developing the Petroleum Refining Life Cycle Inventory Model (PRELIM). This analysis, compares the performance of different refinery mitigation technologies using a tool that facilitates more fair comparisons by making consistent boundaries and assumptions. Results indicate these technologies could offer 3-44% GHG emissions reduction in a typical U.S. refinery. A second analysis is conducted by incorporating public data and refinery optimization procedures into PRELIM to conduct a PADD level analysis of the GHG emissions from U.S. refineries. This analysis demonstrates how a more complete picture of the U.S. refining sector can be obtained by going beyond individual refineries. A third analysis investigates the GHG emissions implications of the declining Gasoline-to-Diesel ratio (G:D) in U.S. refineries driven by fuel economy standards, driver behavior and biofuel mandates. Results indicate that the impact of G:D changes on refining GHG emissions within existing operational flexibility of U.S. refineries is negligible on a country level (~3%) but variations within individual regions could be as high as 8%. Hydrogen typically produced via steam methane reforming constitutes up to 30% of refining GHG emissions necessitating the evaluation of alternative technologies to counteract this impact and reduce emissions further. A fourth analysis provides a techno-economic analysis and LCA of High Temperature Steam Electrolysis (HTSE) by integrating Aspen HYSYS® modelling into LCA. Results indicate GHG emissions of 3-20 kgCO2/kgH2 and cost of $2.5-5/kgH2 are possible depending on the system parameters (e.g., energy source, fuel cell lifespan). Consequently, a carbon price of $360/tonneCO2 that could decrease to $50/tonneCO2 with future technology advancements might be required to make HTSE competitive with SMR. The framework introduced in this thesis can guide analyses that can help inform decision-making related to investment decisions and GHG emissions policy where refineries are concerned.
Use of ICT for community building actions towards the reactivation of urban heritagescapes in South European cities
Creators: name: Artopoulos, Georgios
Publisher: name: Zenodo
Year: 2021
Subjects: data-driven participatory methodology
reactivation and reintegration of historic sites

description: The DARIAH Working Group on “Digital Practices for the Study of Urban Heritage” organised a public space co-creation workshop with the title “Everyday experiences and heritage in south European cities: Digital tools and practices” that was held at Cantieri Culturali della Zisa, Palermo, 25-30 July 2021. Challenged by urbanization, economy, gentrification, migration, and climate change the experience of historical spaces and buildings is fragmented, thus mirroring the disconnected perception of urban societies. The workshop studied how urban heritage and the abundance of culturally valuable structures in specific historic cities across Europe which are challenged by current pressing conditions can contribute to reflective processes and the creation of legible, inclusive, accessible, resilient and enjoyable cities. Data collection and co-creation was facilitated by the use of citizen volunteered geolocation software (readily available to the participants by the organisers), such as DEUSTO Tech DARIAH app and WIKAR AR app (https://wikar.co/).
description: https://udigish.hypotheses.org/
Visual servoed micropositioning for protein manipulation tasks
Creators: name: Mezouar, Youcef
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 2002
Subjects: subject: Nanotechnology
subject: FOS: Nanotechnology

description: In this paper, we present a framework for cell manipulation tasks with visual servoing micromanipulation strategies. A vision based micropositioner is designed in order to address the requirement of high precision needed to perform manipulation of objects under 100 μm in size. The system calibration (microscope-camera-micropositioner) and the model of the observed scene are not known. Experimental results for micropositioning tasks with respect to protein cells are presented and demonstrate the validity of the proposed approach.
The effects of journalistic routines on LGBTQ+ advocates’ efforts to influence media framing of religious exemptions to anti-discrimination laws
Creators: name: Gibson, Rhonda
Publisher: name: SAGE Publications
Year: 2023

description:
In-depth interviews with 26 journalists from large mainstream news outlets who covered the Masterpiece Cakeshop v. Colorado Civil Rights Commission U.S. Supreme Court case indicate that LGBTQ+ advocacy organization efforts to influence journalists’ decision-making processes related to story angle and sourcing were unsuccessful. Instead, journalists relied on official court documents as sources, avoiding press advisories from social movement organizations in an effort to maintain neutrality and impartiality.
The Pitfalls of Aid
Creators: name: Mitchell, Lincoln A.
name: Phillips, David L.
Publisher: name: Columbia University
Year: 2008
Subjects: East Europeans
International relations

description: The United States must not be dissuaded from restoring the promotion of freedom and democracy as a core principle of U.S. foreign policy. Democracy assistance is both a reflection of American values and in America's strategic interests. America's next president will be challenged to revitalize the democracy agenda — and get it right. What's needed to address the challenges of the 21st century is a more versatile approach based on the requirements of each country and tailored to the characteristics of different regime types — authoritarian regimes, illiberal democracies, free-wheeling kleptocracies and post-conflict countries.
The robustness of magic state distillation against errors in Clifford gates
Creators: name: Jochym-O'Connor, Tomas
name: Yu, Yafei
name: Helou, Bassam
name: Laflamme, Raymond
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction and fault-tolerance have provided the possibility for large scale quantum computations without a detrimental loss of quantum information. A very natural class of gates for fault-tolerant quantum computation is the Clifford gate set and as such their usefulness for universal quantum computation is of great interest. Clifford group gates augmented by magic state preparation give the possibility of simulating universal quantum computation. However, experimentally one cannot expect to perfectly prepare magic states. Nonetheless, it has been shown that by repeatedly applying operations from the Clifford group and measurements in the Pauli basis, the fidelity of noisy prepared magic states can be increased arbitrarily close to a pure magic state [1]. We investigate the robustness of magic state distillation to perturbations of the initial states to arbitrary locations in the Bloch sphere due to noise. Additionally, we consider a depolarizing noise model on the quantum gates in the decoding section of the distillation protocol and demonstrate its effect on the convergence rate and threshold value. Finally, we establish that faulty magic state distillation is more efficient than fault-tolerance-assisted magic state distillation at low error rates due to the large overhead in the number of quantum gates and qubits required in a fault-tolerance architecture. The ability to perform magic state distillation with noisy gates leads us to conclude that this could be a realistic scheme for future small-scale quantum computing devices as fault-tolerance need only be used in the final steps of the protocol.
description: 11 pages, 8 figures
Evaluating the Emergent Effects of (Multiple) Security Mechanisms via Evolutionary Algorithms
Creators: name: Hudson, Jonathan William
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Computer Science

description: Security mechanisms provide protection against system penetration and exploitation by providing coverage for vulnerabilities. However, security mechanisms often have demanding operational requirements that necessitate access to system resources and control of monitoring points. At the same time, users have particular requirements from programs they install, how they interact with these programs, and what performance they expect from their computing system. These combined requirements create a selection problem where the user desires to balance security coverage, through a choice of security mechanism(s), with system performance and functionality. This problem is known as the Effective Security-in-Depth problem. First, this thesis introduces a genetic algorithm to enable an evolutionary search for interaction event sequences for the problem of Effective Security-in-Depth. This methodology required the development of a fitness function that integrated numerous system metrics while addressing the variance found in event sequence simulation and measurement. Next, the steps for effectively implementing this methodology as a software tool are described. Finally, this thesis introduces three processes to use the tool to select between single security mechanisms for different usage profiles, compare and contrast subsets of security mechanisms, and evaluate examples of emergent misbehaviour such as system failure. The initial experimental evaluation validates the ability of the search for interaction event sequences to make progress despite the challenges of stochastic system measurement. The remaining experimental evaluations demonstrate the success of an application of each of the three processes. The evaluation supports that the developed method, tool, and processes are a viable solution to the problem of Effective Security-in-Depth.
title: Accuracy of CT attenuation in the diagnosis and characterization of anemia
Creators: name: Fino-Velásquez, Laura
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Retrospective
subject: Blood
subject: Laboratory tests
subject: CT
subject: Vascular
subject: Arteries / Aorta
subject: Vascular
subject: Diagnostic or prognostic study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: In later decades, computed tomography (CT) has become a useful tool in the detection of anemia. The tomographic manifestations related to anemia are "aortic ring sign", "interventricular septum sign", as well as lower attenuation of the...
Density matrix embedding: A simple alternative to dynamical mean-field theory
Creators: name: Knizia, Gerald
name: Chan, Garnet Kin-Lic
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce DMET, a new quantum embedding theory for predicting ground-state properties of infinite systems. Like dynamical mean-field theory (DMFT), DMET maps the the bulk interacting system to a simpler impurity model and is exact in the non-interacting and atomic limits. Unlike DMFT, DMET is formulated in terms of the frequency-independent local density matrix, rather than the local Green's function. In addition, it features a finite, algebraically constructible bath of only one bath site per impurity site, which exactly embeds ground-states at a mean-field level with no bath discretization error. Frequency independence and the minimal bath make DMET a computationally simple and very efficient method. We test the theory in the 1D and 2D Hubbard models at and away from half-filling, and we find that compared to benchmark data, total energies, correlation functions, and paramagnetic metal-insulator transitions are well reproduced, at a tiny computational cost.
description: 5 pages, 5 figures
The impact of narratives on EU policymaking
Creators: name: Vigneri, Francesco
name: Daga, Giulia
name: Barana, Luca
Publisher: name: Zenodo
Year: 2023

description: This report investigates the main migration narratives circulating on media, political debates, and policy venues within the European Union (EU) over the past decade. It focuses on two significant migration events: the 2015 "refugee crisis" and the 2022 activation of the Temporary Protection Directive for those fleeing Russian aggression against Ukraine. Specifically, the research aims to understand which narratives have shaped in the media, the EU political debate, and policymaking for each of the two cases, and assess to which extent and manner these have circulated across these three domains. To do so, it relies on a qualitative discourse analysis of more than a hundred texts produced by the EU institutions. This report presents the main results of such analysis. First, it provides an overview of the theoretical and methodological framework, and of the reflections that led to the case selection. Then, it offers a detailed analysis of the dominant narratives during the 2015 refugee crisis and the 2022 activation of the Temporary Protection Directive. Finally, it reflects on the circulation of narratives across the three arenas considered for the analysis, by paying attention to the pervasiveness and transformativity of these narratives, and ultimately evaluate their potential implications for policy output.
Supersymmetron
Creators: name: Brax, Philippe
name: Davis, Anne-Christine
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a supersymmetric model of dark energy coupled to cold dark matter: the supersymmetron. In the absence of cold dark matter, the supersymmetron converges to a supersymmetric minimum with a vanishing cosmological constant. When cold dark matter is present, the supersymmetron evolves to a matter dependent minimum where its energy density does not vanish. In the early universe until the recent past of the Universe, the energy density of the supersymmetron is negligible compared to the cold dark matter energy density. Away from the supersymmetric minimum, the equation of state of the supersymmetron is constant and negative. When the supersymmetron reaches the neighbourhood of the supersymmetric minimum, its equation of state vanishes rapidly. This leads to an acceleration of the universe which is transient unless supersymmetry breaking induces a pure cosmological constant and acceleration of the Universe does not end. Moreover, we find that the mass of supersymmetron is always greater than the gravitino mass. As a result, the supersymmetron generates a short ranged fifth force which evades gravitational tests. On the other hand, we find that the supersymmetron may lead to relevant effects on large scale structures.
description: published version, 11 pages
Adaptive Velocity Estimation for Lagrangian Systems using Modulating Functions
Creators: name: Noack, Matti
name: Reger, Johann
name: Jouffroy, Jerome
Publisher: name: Zenodo
Year: 2023
Subjects: State Estimation
Modulating Functions
Non-asymptotic Estimation
Nonlinear Observer
Robotic Systems

description: Information about the internal position and velocity of a robotic system is crucial for its control. Especially, under uncertain models, changing dynamic parameters and noisy position measurement signals, an adaptive differentiation is needed combining structural knowledge of the model with adequate filtering of the sensor data. To this end, the Modulating Function Method is applied to the Lagrange formulation of the robotic system to preserve the structure while enabling to incorporate nonlinear terms into the integral transform methodology. Different types of Modulating Functions and the function projection approach are used to develop a simultaneous parameter and state estimation procedure for the general structure of open kinematic chains. The developed algorithm for an adaptive velocity estimation is capable of robustly reconstructing the generalized state and consists of an efficient Finite Impulse Response (FIR) filter type implementation. The resulting architecture is demonstrated on a two-link robot setup.
Beacon of Democracy or Khachapuri Republic?
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2007
Subjects: International relations

description: Immediately after the crackdown on November 7, 2007, the Western media, in addition to the inevitable puns about roses, thorns and withering, offered two different narratives. The first, perhaps best seen in Anne Applebaum's piece in The Washington Post, was that democracy had failed in Georgia partially because of wrongheaded U.S. policies. The second was that this was a mistake, but otherwise things were going well in Georgia and if the January 5 elections went well, democracy in Georgia would be back on track.  Interestingly, this latter narrative seems to be in the ascendancy and seems to reflect US policy. The truth lies somewhere in between and is worth thinking about.
A direct route to engagement
Creators: name: Mitchell, Lincoln A.
Publisher: name: Columbia University
Year: 2010
Subjects: East Europeans
International relations

description: The Russian—Georgian war in August 2008 and Russia's decision to recognise the independence of the Georgian breakaway territories of Abkhazia and South Ossetia have fundamentally altered the political balance of what were previously referred to as 'frozen' conflicts. After years of pursuing policies that isolated Abkhazia and South Ossetia, the European Union and the government of Georgia have both announced new strategies towards these regions. Despite certain similarities between the two strategies, however, aligning their instruments and goals will prove difficult given the different political priorities of Brussels and Tbilisi. The EU must prepare to pursue its own engagement strategy regardless of how the Georgian approach is crafted or implemented.
Gaming micro-transactions for chance-based items
Creators: name: Environment, Senate Standing Committees On
Publisher: name: Parliament of Australia
Year: 2018
Subjects: subject: Video games
subject: Gambling Literature

description: This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Australia License.
description: The Senate referred the following matter to the Environment and Communications References Committee for inquiry and report: The extent to which gaming micro-transactions for chance-based items, sometimes referred to as 'loot boxes', may be harmful, with particular reference to: (a) whether the purchase of chance-based items, combined with the ability to monetise these items on third-party platforms, constitutes a form of gambling; and (b) the adequacy of the current consumer protection and regulatory framework for in-game micro transactions for chance-based items, including international comparisons, age requirements and disclosure of odds.
C-Peptid-Plasma-Konzentrationen und inflammatorische Monozyten bei chronisch Nierenkranken
Creators: name: Bode, Veronika
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: 610

description: C-Peptid könnte bei chronisch Nierenkranken akkumulieren, jedoch fehlen bislang systematische Analysen. Möglicherweise lagert es sich in Gefäßwänden ab, lockt Monozyten an und markiert somit den Beginn einer Atherosklerose. An der Querschnittstudie nahmen 25 nichtdiabetische Nierengesunde, 13 diabetische Dialysepatienten, 21 nichtdiabetische Dialysepatienten und 20 Patienten mit CKD 3-4 mit und ohne Diabetes teil. Die C-Peptid-Plasma-Konzentration war bei Nierenkranken höher als bei Nierengesunden, unabhängig des Stadiums der Niereninsuffizienz und eines Diabetes. Neben unsystematischen Effekten bei CD11a und CD36 boten Nierenkranke eine stärkere Expression von CX3CR1 (Adhäsions- und Migrationsrezeptor) auf Monozyten, jedoch zeigte sich keine vermehrte mRNA-Expression einiger Marker, die mit Entzündung (TNF-α, TNFRSF-1A, TNFRSF-1B), Inflammasom (CASP1, IL-1β, NLRP3) und Migration (CCL2, CX3CR1) assoziiert sind. Die C-Peptid-Konzentration korrelierte nicht mit o.g. Markern, zudem gab es keine Migration der Monozyten durch physiologisch konzentriertes C-Peptid als chemotaktischer Stimulus in vitro. Insgesamt bleibt der Nachweis einer aktiven Beteiligung des C-Peptids an dem Prozess der Inflammation weiterhin aus.
description: C-peptide may accumulate in patients with chronic kidney disease (CKD), however systematic analyses are lacking until now. It may accumulate in vascular walls with the possible attraction of monocytes representing the beginning of atherosclerosis. 25 nondiabetic, healthy persons, 13 diabetic haemodialysis patients, 21 nondiabetic haemodialysis patients and 20 patients with CKD 3-4 with or without diabetes were examined in a cross-sectional study. Patients with CKD presented a higher plasma concentration of C-peptide than healthy people, independent of the stage of CKD and an additional diabetes. In contrast to CD11a and CD36 we determined a higher expression of CX3CR1 (adhesion and migration receptor) on monocytes of patients with CKD, but there was no higher mRNA expression of markers associated with inflammation (TNF-α, TNFRSF-1A, TNFRSF-1B), inflammasome (CASP1, IL-1β, NLRP3) and migration (CCL2, CX3CR1). C-peptide concentration did not correlate with the analysed markers. There was no migration of monocytes using physiologically concentrated C-peptide as a chemotactic stimulus in vitro. In conclusion, the proof of the active involvement of C-peptide in the process of inflammation is still outstanding.
Additional file 1 of Extracellular matrix remodelling and stiffening contributes to tumorigenesis of salivary carcinoma ex pleomorphic adenoma——A study based on patient-derived organoids
Creators: name: Chen, Wanling
name: Gu, Ting
name: Chen, Qianqian
name: Qu, Chuxiang
name: Zhang, Chunye
name: Hu, Yuhua
name: Xia, Ronghui
name: Zhang, Ying
name: Wang, Min
name: Huang, Xinyi
name: Li, Jiang
name: Shi, Chaoji
name: Tian, Zhen
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1: Supplementary methods, tables and figures.
title: Magnetic Resonance-Guided Focused Ultrasound Surgery (MRgFUS) in the treatment of submucosal uterine fibroids: safety and efficacy in a 4-year prospective study
Creators: name: Cobianchi Bellisari, Flavia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Observational
subject: Prospective
subject: Osteoporosis
subject: Outcomes analysis
subject: MR
subject: Pelvis
subject: Genitourinary

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To evaluate clinical efficacy and safety of Magnetic Resonance-guided Focused Ultrasound (MRgFUS) in the treatment of sub-mucosal uterine fibroids (UFs) in a 4-year prospective...
Implications of gauge kinetic mixing on Z' and slepton production at the LHC
Creators: name: Krauss, Manuel E.
name: O'Leary, Ben
name: Porod, Werner
name: Staub, Florian
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a supersymmetric version of the standard model extended by an additional U(1)_{B-L}. This model can be embedded in an mSUGRA-inspired model where the mass parameters of the scalars and gauginos unify at the scale of grand unification. In this class of models the renormalization group equation evolution of gauge couplings as well as of the soft SUSY-breaking parameters require the proper treatment of gauge kinetic mixing. We first show that this has a profound impact on the phenomenolgy of the Z' and as a consequence the current LHC bounds on its mass are reduced significantly from about 1920 GeV to 1725 GeV. They are even further reduced if the Z' can decay into supersymmetric particles. Secondly, we show that in this way sleptons can be produced at the LHC in the 14 TeV phase with masses of several hundred GeV. In the case of squark and gluino masses in the multi-TeV range, this might become an important discovery channel for sleptons up to 650 GeV (800 GeV) for an integrated luminosity of 100 fb^{-1} (300 fb^{-1}).
description: 34 pages, 14 figures. v2: Significance equation corrected, results qualitatively unchanged; minor changes in quantitative Z' bounds
Scalable Resource Control in Active Networks
Creators: name: Anagnostakis, Kostas G.
name: Hicks, Michael W.
name: Ioannidis, Sotiris
name: Keromytis, Angelos D.
name: Smith, Jonathan M.
Publisher: name: Columbia University
Year: 2000
Subjects: Computer science

description: The increased complexity of the service model relative to store-and-forward routers has made resource management one of the paramount concerns in active networking research and engineering. In this paper,we address two major challenges in scaling resource management-to-many-node active networks. The first is the use of market mechanisms and trading amongst nodes and programs with varying degrees of competition and cooperation to provide a scalable approach to managing active network resources. The second is the use of a trust-management architecture to ensure that the participants in the resource management marketplace have a policy-driven "rule of law" in which marketplace decisions can be made and relied upon. We have used lottery scheduling and the Keynote trust-management system for our implementation, for which we provide some initial performance indications.
title: Improving noise estimation based on air in the trachea with a volume-based approach
Creators: name: Wisselink, Hendrik Joost
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: CT
subject: Thorax
subject: Lung
subject: Chest
subject: Technical aspects
subject: Chronic obstructive airways disease
subject: Not applicable

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The most common method for emphysema quantification on computed tomography (CT) is segmenting the lungs and calculating the percentage of voxels with a density below a certain threshold.[Müller 1987, Lowe 2019] High image noise will therefore...
Solving problems with GCMs: General circulation models and their role in the climate modeling hierarchy
Creators: name: Robertson, Andrew W.
name: Ghil, Michael
Publisher: name: Columbia University
Year: 2000
Subjects: Atmosphere
Meteorology

description: We outline the familiar concept of a hierarchy of models for solving problems in climate dynamics. General circulation models (GCMs) occupy a special position at the apex of this hierarchy, and provide the main link between basic concepts—best captured by very simple, "toy" models—and the incomplete and inaccurate observations of climate variability in space and time. We illustrate this role of GCMs in addressing the problems of climate variability on three time scales: intraseasonal, seasonal-to-interannual, and interdecadal. The problems involved require the use of atmospheric, oceanic, and coupled ocean-atmosphere GCMs. We emphasize the role of dynamical systems theory in communicating between the rungs of the modeling hierarchy—toy models, intermediate ones, and GCMs—and between modeling results and observations.
2-microlocal analysis of martingales and stochastic integrals
Creators: name: Balança, Paul
name: Herbin, Erick
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G07, 60G17, 60G22, 60G44

description: Recently, a new approach in the fine analysis of stochastic processes sample paths has been developed to predict the evolution of the local regularity under (pseudo-)differential operators. In this paper, we study the sample paths of continuous martingales and stochastic integrals. We proved that the almost sure 2-microlocal frontier of a martingale can be obtained through the local regularity of its quadratic variation. It allows to link the Hölder regularity of a stochastic integral to the regularity of the integrand and integrator processes. These results provide a methodology to predict the local regularity of diffusions from the fine analysis of its coefficients. We illustrate our work with examples of martingales with unusual complex regularity behavior and square of Bessel processes.
description: 40 pages, 3 figures
3-D model construction using range and image data
Creators: name: Stamos, Ioannis
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 2000
Subjects: Computer science

description: This paper deals with the automated creation of geometric and photometric correct 3-D models of the world. Those models can be used for virtual reality, tele-presence, digital cinematography and urban planning applications. The combination of range (dense depth estimates) and image sensing (color information) provides data-sets which allow us to create geometrically correct, photorealistic models of high quality. The 3-D models are first built from range data using a volumetric set intersection method previously developed by us. Photometry can be mapped onto these models by registering features from both the 3-D and 2-D data sets. Range data segmentation algorithms have been developed to identify planar regions, determine linear features from planar intersections that can serve as features for registration with 2-D imagery lines, and reduce the overall complexity of the models. Results are shown for building models of large buildings on our campus using real data acquired from multiple sensors.
title: CT imaging characteristics for predicting success of radiofrequency ablation (RFA) of pulmonary metastases
Creators: name: Ham, Sooyoun
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Chest
subject: Thorax
subject: CT
subject: CT-High Resolution
subject: Ablation procedures
subject: Cancer
subject: Retrospective
subject: Cross-sectional study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To predict the efficacy and success of radiofrequency ablation (RFA) of pulmonary metastatic lesions, correlated with chest CT...
title: Sonographic measurement of rectus femoris and gastrocnemius medialis muscle thickness in assessment of total skeletal muscle mass: correlation to CT
Creators: name: Ivanoski, Slavco
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Musculoskeletal
subject: Extremities
subject: Musculoskeletal soft tissue
subject: Musculoskeletal system
subject: CT
subject: Ultrasound
subject: Diagnostic procedure
subject: Geriatrics
subject: Tissue characterisation
subject: Prospective
subject: Cross-sectional study
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Muscle mass and function reduction and the prevalence of sarcopenia increases with the age (1). Muscle atrophy appears early, after the age of 40. However, the muscle decline isn’t linear and increases more rapidly after the age of 65 (2)....
Examining Bullying Perpetration as a Predictor of Later Teen Dating Violence Perpetration: Do Gender-Based Biases Affect This Pathway?
Creators: name: Espelage, Dorothy L.
name: Robinson, Luz E.
name: Rivas-Koehl, Matthew
name: Valido, Alberto
Publisher: name: American Psychological Association (APA)
Year: 2023

description:
Objective: Teen dating violence (TDV) is a prevalent form of interpersonal violence that profoundly impacts lifelong physical and mental health. To support the prevention of TDV perpetration, the present study examined whether an early occurring form of interpersonal violence, bullying perpetration, was longitudinally associated with later TDV perpetration and whether gender-based biases may influence this relationship. Method: This study used a longitudinal high school sample (N = 2,301) to examine the relationship between bullying and TDV perpetration across 3 years. Five types of TDV outcomes were included: relational, physical, verbal–emotional, sexual abuse, and abuse involving threatening behavior. We examined sexism and homophobic name-calling (HNC) as moderators between bullying and TDV perpetration. Bullying perpetration at Time 1 was used to predict TDV perpetration at Time 3. Sexism and HNC were introduced as moderators to this path analysis at Time 2. Results: Our findings revealed several significant pathways that supported the longitudinal association between bullying and forms of TDV. In addition, sexism and HNC significantly moderated some of these pathways, respectively, especially among boys. Conclusions: Our results suggest that gender-based biases may be mechanisms through which the likelihood of TDV is bolstered among adolescents who engage in bullying behaviors. We critique the influences of systemic gender norms, and pressures to adhere to masculinity in particular, as related to the perpetration of TDV. We call for comprehensive sex education to be mandated at the policy level and for biased-based aggression based on widespread gender inequities to be addressed in society.
title: Limits of Copper Detectability in Dual Energy CT
Creators: name: O'Donnell, Thomas
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Physics in Medical Imaging
subject: Contrast agents
subject: CT
subject: Contrast agent-other
subject: Kv imaging
subject: Not applicable

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Wilson’s Disease (Hepatolenticular Degeneration) is a malady resulting from the accumulation of copper in the body (primarily in the liver and brain). It is genetic in nature and is caused by a defect in the biliary excretion of copper. It may...
Novel synthetic approach for the preparation of mono- and bis-aminoboranes and their initial reactivity studies
Creators: name: ZHAI, SIYUAN
Publisher: name: Monash University
Year: 2023
Subjects: Inorganic chemistry not elsewhere classified

description: We wish to report a new approach, based on controlled hydroboration of imines, for synthesising mono- and acyclic bis-aminoboranes. This was made possible by the formation and isolation of imine-BH3 adducts, which represented a crucial step for the overall synthetic method. These adducts were then converted to mono-aminoboranes via a 1,3-hydride shift which most likely occurred intermolecularly. Further reaction of mono-aminoboranes with imines yielded a variety of acyclic (a)symmetric bis-aminoboranes. Additionally, the reduction of carbonyl groups such as aldehydes by mono-aminoboranes was established to be mainly due to the potential hydride activity of these compounds via the formation of “four-coordinate boranes” Lastly, deoxygenating coupling was observed when hydroboration of carbonyl compounds, including CO2, was carried out using bis-aminoboranes.
title: Short external rotator tendon release during anterior approach total hip arthroplasty – a prospective cohort MRI study
Creators: name: Salat, Peter
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Prospective
subject: Prostheses
subject: Arthritides
subject: Surgery
subject: Complications
subject: MR
subject: Musculoskeletal soft tissue
subject: Musculoskeletal joint
subject: Musculoskeletal bone
subject: Musculoskeletal
subject: Observational
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Anterior surgical approach for total hip arthroplasty is believed to spare the short external rotator (SER) tendons but the rate of tendon release is unknown. This study prospectively determines the incidence of SER tendon release in subjects...
Arachne - A web-based event viewer for MINERvA
Creators: name: Tagg, N.
name: Brangham, J.
name: Chvojka, J.
name: Clairemont, M.
name: Day, M.
name: Eberly, B.
name: Felix, J.
name: Fields, L.
name: Gago, A. M.
name: Gran, R.
name: Harris, D. A.
name: Kordosky, M.
name: Lee, H.
name: Maggi, G.
name: Maher, E.
name: Mann, W. A.
name: Marshall, C. M.
name: McFarland, K. S.
name: McGowan, A. M.
name: Mislivec, A.
name: Mousseau, J.
name: Osmanov, B.
name: Osta, J.
name: Paolone, V.
name: Perdue, G.
name: Ransome, R. D.
name: Ray, H.
name: Schellman, H.
name: Schmitz, D. W.
name: Simon, C.
name: Salinas, C. J. Solano
name: Tice, B. G.
name: Walding, J.
name: Walton, T.
name: Wolcott, J.
name: Zhang, D.
name: Ziemer, B. P.
name: Collaboration, The MINERvA
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Neutrino interaction events in the MINERvA detector are visually represented with a web-based tool called Arachne. Data are retrieved from a central server via AJAX, and client-side JavaScript draws images into the user's browser window using the draft HTML 5 standard. These technologies allow neutrino interactions to be viewed by anyone with a web browser, allowing for easy hand-scanning of particle interactions. Arachne has been used in MINERvA to evaluate neutrino data in a prototype detector, to tune reconstruction algorithms, and for public outreach and education.
description: 8 pages; 3 figures
Digital twin linking cultural ecosystem services of recreational potential and biodiversity
Creators: name: Dick, Jan
name: Rolph, Simon
name: Andrews, Chris
name: Watkins, John
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Digital Twin

description: The use case will focus on the Cairngorms National Park in Scotland initially as a proof-of-concept study, we aim to consider other areas and different species in future work. The case-study will focus on how a digital twin prioritising user-defined recreation preferences linked to biodiversity occurrence and locations with sparse biodiversity data could be used by the following users: Citizens wishing to recreate in nature Citizens wishing to contribute scientific data (Citizen scientists) Land managers wishing to manage biodiversity and recreationalists in their area Policy makers wishing to balance trade offs in space for development/nature/recreation Inter and transdisciplinary researchers seeking to test socio-ecological hypotheses The poster was first presented at the BioDT Annual Meeting 2023, 13-14 June in Leiden, Netherlands. Learn more
Dynamic average-value modeling of the 120° VSI-commutated brushless dc motors with non-sinusoidal back EMF
Creators: name: Tabarraee, Kamran
Publisher: name: University of British Columbia
Year: 2011

description: For large and small signal analysis of electromechanical systems with power electronic devices such as Brushless DC (BLDC) motor-inverter drives, average-value models (AVMs) are indisputable. Average-value models are typically orders of magnitude faster than the corresponding detailed models. This advantage makes AVMs ideal for representing motor-drive components in system level studies. Derivation of accurate dynamic average-value model of BLDC motor-drive system is generally challenging and requires careful averaging of the stator phase voltages and currents over a prototypical switching interval (SI) to find the corresponding average-value relationships for the state variables and the resulting electromagnetic torque. The so-called 120° voltage source inverter (VSI) driven brushless dc (BLDC) motors are very common in many commercial and industrial applications. This thesis extends the previous work and presents a new and improved dynamic average-value model (AVM) for such BLDC motor-drive systems. The new model is explicit and uses a proper model of the permanent magnet synchronous machine with non-sinusoidal rotor flux. The model utilizes multiple reference frame theory to properly include the back EMF harmonics as well as commutation and conduction intervals into the averaged voltage and torque relationships. The commutation angle is readily obtained from the detailed simulation. The proposed model is then demonstrated on two typical industrial BLDC motors with differently-shaped back EMF waveforms (i.e. trapezoidal and close to sinusoidal). The results of studies are compared with experimental measurements as well as previously established state-of-the-art models, whereas the new model is shown to provide appreciable improvement especially for machines with pronounced trapezoidal back EMF.
title: Fat and collagen quantification by magnetic resonance imaging on an exclusive phantom model
Creators: name: RODRÍGUEZ-ORTEGA, ALEJANDRO
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Abdominal Viscera
subject: Abdomen
subject: Computer applications
subject: Liver
subject: MR
subject: Diagnostic procedure
subject: Imaging sequences
subject: Cirrhosis
subject: Quality assurance
subject: Tissue characterisation
subject: Prospective
subject: Experimental
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To evaluate the automatic diagnostic and quantification accuracy of different MR image processing techniques to simultaneously quantify imaging biomarkers of chronic diffuse liver diseases [1], such as steatosis and fibrosis [2-3], on a specific...
title: Combination of two-dimensional shear wave elastography and Bi-RADS criteria in differentiating benign from malignant breast solid masses.
Creators: name: Messina, Silvia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Diagnostic or prognostic study
subject: Prospective
subject: Cancer
subject: Comparative studies
subject: Biopsy
subject: Ultrasound
subject: Elastography
subject: Breast

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To assess the role of 2D-shear-wave elastography (2D-SWE) in differentiating benign from malignant Focal Breast Lesions (FBLs) in association with US-BI-RADS...
MaGICC Disks: Matching Observed Galaxy Relationships Over a Wide Stellar Mass Range
Creators: name: Brook, C. B.
name: Stinson, G.
name: Gibson, B. K.
name: Wadsley, J.
name: Quinn, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the same physical model to simulate four galaxies that match the relation between stellar and total mass, over a mass range that includes the vast majority of disc galaxies. The resultant galaxies, part of the Making Galaxies in a Cosmological Context (MaGICC) program, also match observed relations between luminosity, rotation velocity, size, colour, star formation rate, HI mass, baryonic mass, and metallicity. Radiation from massive stars and supernova energy regulate star formation and drive outflows, balancing the complex interplay between cooling gas, star formation, large scale outflows, and recycling of gas in a manner which correctly scales with the mass of the galaxy. Outflows also play a key role in simulating galaxies with exponential surface brightness profiles, flat rotation curves and dark matter cores. Our study implies that large scale outflows are the primary driver of the dependence of disc galaxy properties on mass. We show that the amount of outflows invoked in our model is required to meet the constraints provided by observations of OVI absorption lines in the circum-galactic-media of local galaxies.
description: 9 pages. accepted version MNRAS. Comments welcome: cbabrook@gmail.com
A Study of the Relative Costs of Network Security Protocols
Creators: name: Miltchev, Stefan
name: Ioannidis, Sotiris
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2002
Subjects: Computer science

description: While the benefits of using IPsec to solve a significant number of network security problems are well known and its adoption is gaining ground, very little is known about the communication overhead that it introduces. Quantifying this overhead will make users aware of the price of the added security, and will assist them in making well-informed IPsec deployment decisions. In this paper, we investigate the performance of IPsec using micro- and macro-benchmarks. Our tests explore how the various modes of operation and encryption algorithms affect its performance and the benefits of using cryptographic hardware to accelerate IPsec processing. Finally, we compare against other secure data transfer mechanisms, such as SSL, scp(1), and sftp(1).
Intelligent load shedding scheme for frequency control in communities with local alternative generation and limited main grid support
Creators: name: Rostamirad, Shahrzad
Publisher: name: University of British Columbia
Year: 2011

description: The number of microgrids in the electric power system is increasing rapidly to meet the increased electrical demand at the distribution level instead of delivering the additional power from centralized generation stations. Due to the above-mentioned transformation and a number of other factors, the utilities find themselves less attracted to investing in the supply lines. As a consequence, the connection points of these, rather self-supplied, microgrids become more vulnerable to any major disturbances in the downstream network. Because microgrids with renewable energy resources do not have a generation reserve, an intelligent load shedding algorithm (based on a smart grid) is proposed, that balances the power demand and generation, and prevents the upstream supply lines from exceeding their capacity at any time. Although the algorithm is accurate, it may not be fast enough to prevent a cascading power outage in the isolated microgrid due to very fast frequency decline. To help maintain the frequency of the microgrid close to the normal level, a supplementary controller is added to the doubly fed induction generator wind turbine. The studied microgrid corresponds to a case study in the University of British Columbia (UBC). A scenario of demand and distributed generation of the campus in the year 2030 are modeled. The proposed algorithm, which combines intelligent load shedding with wind turbine controller, succeeds in managing the power requirements for both grid connected and isolated microgrids. However, the algorithm has a weakness which is its operation delay; for longer delays in deactivating the controller and load shedding, the frequency might drop below the threshold. A number of suggestions are made to overcome this problem.