cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Learning to Estimate Without Bias
Creators: name: Diskin, Tzvi
name: Eldar, Yonina C.
name: Wiesel, Ami
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The Gauss Markov theorem states that the weighted least squares estimator is a linear minimum variance unbiased estimation (MVUE) in linear models. In this paper, we take a first step towards extending this result to non linear settings via deep learning with bias constraints. The classical approach to designing non-linear MVUEs is through maximum likelihood estimation (MLE) which often involves computationally challenging optimizations. On the other hand, deep learning methods allow for non-linear estimators with fixed computational complexity. Learning based estimators perform optimally on average with respect to their training set but may suffer from significant bias in other parameters. To avoid this, we propose to add a simple bias constraint to the loss function, resulting in an estimator we refer to as Bias Constrained Estimator (BCE). We prove that this yields asymptotic MVUEs that behave similarly to the classical MLEs and asymptotically attain the Cramer Rao bound. We demonstrate the advantages of our approach in the context of signal to noise ratio estimation as well as covariance estimation. A second motivation to BCE is in applications where multiple estimates of the same unknown are averaged for improved performance. Examples include distributed sensor networks and data augmentation in test-time. In such applications, we show that BCE leads to asymptotically consistent estimators.
title: Downstream investigation following CT coronary angiography: an audit of practise in a UK centre
Creators: name: Amlani, Ashik
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Multicentre study
subject: Observational
subject: Retrospective
subject: Ischaemia / Infarction
subject: Arteriosclerosis
subject: Outcomes analysis
subject: CAD
subject: CT-Angiography
subject: Cardiac

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: In the UK, national guidance on the assessment of cardiac sounding chest pain (NICE CG95 2016) (1), advises that CT coronary angiography (CTCA) is the first line imaging modality. If this reveals coronary artery disease of uncertain functional...
Model-independent form factor relations at large $N_c$
Creators: name: Cohen, Thomas D.
name: Krejčiřík, Vojtěch
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper a model-independent relation which holds for the long distance part of the Fourier transform of the electromagnetic form factors of the nucleon in the large $N_c$ and chiral limits is demonstrated. This relation was previously conjectured based on the fact that it emerged in {\it all} semiclassical chiral models independent of the details of the model. Here we show that the result is, in fact, model independent by deriving it directly in large $N_c$ chiral perturbation theory which is known to capture the long distance behavior of the form factors. The relation is valid when the large $N_c$ limit is formally taken before the chiral limit. A new relation is derived for the case where the chiral limit is taken prior to the large $N_c$ limit.
Collaborative planning approach to inform the implementation of a healthcare manager intervention for hispanics with serious mental illness: a study protocol
Creators: name: Cabassa, Leopoldo J.
name: Druss, Benjamin
name: Wang, Yuanjia
name: Lewis-Fernandez, Roberto
Publisher: name: Columbia University
Year: 2011
Subjects: Mental health
Hispanic Americans

description: Background: This study describes a collaborative planning approach that blends principles of community-based participatory research (CBPR) and intervention mapping to modify a healthcare manager intervention to a new patient population and provider group and to assess the feasibility and acceptability of this modified intervention to improve the physical health of Hispanics with serious mental illness (SMI) and at risk for cardiovascular disease (CVD). Methods: The proposed study uses a multiphase approach that applies CBPR principles and intervention-mapping steps--an intervention-planning approach--to move from intervention planning to pilot testing. In phase I, a community advisory board composed of researchers and stakeholders will be assembled to learn and review the intervention and make initial modifications. Phase II uses a combination of qualitative methods--patient focus groups and stakeholder interviews--to ensure that the modifications are acceptable to all stakeholders. Phase III uses results from phase II to further modify the intervention, develop an implementation plan, and train two care managers on the modified intervention. Phase IV consists of a 12-month open pilot study (N = 30) to assess the feasibility and acceptability of the modified intervention and explore its initial effects. Lastly, phase V consists of analysis of pilot study data and preparation for future funding to develop a more rigorous evaluation of the modified intervention. Discussion: The proposed study is one of the few projects to date to focus on improving the physical health of Hispanics with SMI and at risk for CVD by using a collaborative planning approach to enhance the transportability and use of a promising healthcare manager intervention. This study illustrates how blending health-disparities research and implementation science can help reduce the disproportionate burden of medical illness in a vulnerable population.
Domain Walls in Extended Lovelock Gravity
Creators: name: dS, U. Camara
name: Constantinidis, C. P.
name: Lima, A. L. Alves
name: Sotkov, G. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive a BPS-like first order system of equations for a family of flat static domain walls (DWs) of dimensionally extended cubic Lovelock Gravity coupled to massive scalar self-interacting matter. The explicit construction of such DWs is achieved by introducing of an appropriate matter superpotential. We further analyse the dependence of the geometric properties of the asymptotically AdSd space-times representing distinct DWs on the shape of the matter potential, on the values of the Lovelock couplings and on the scalar field boundary conditions. Few explicit examples of Lovelock DWs interpolating between AdS-type vacua of different cosmological constants are presented. In five dimensions our method provides interesting solutions of the Myers-Robinson Quasi-topological Gravity in the presence of matter important for the description of the specific renormalization group flows in its holographic dual four-dimensional CFT perturbed by relevant operators.
description: 39 pages,2figures; V2- small corrections and improvements, references added
title: Is there a clinically useful relationship between Coronary Artery Calcium scores and Coronary CTA CAD-RADs scores?
Creators: name: O Beirne, Sheena
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Retrospective
subject: Arteriosclerosis
subject: Arterial access
subject: CT-Angiography
subject: Vascular
subject: Cardiovascular system
subject: Arteries / Aorta
subject: Cardiac
subject: Observational
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The purpose of this study is to determine if there is a clinically useful relationship between Coronary Artery Calcium and Coronary CTA Coronary Artery Disease - Reporting and Data System (CAD-RADS)...
title: “Dark-PSIR” sequences in evaluation of Late Gadolinium Enhancement (LGE) pattern: ischemic or not?
Creators: name: Tore, Davide
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Cardiac
subject: Cardiac
subject: Cardiovascular system
subject: MR physics
subject: MR
subject: Contrast agent-intravenous
subject: Imaging sequences
subject: Artifacts
subject: Ischaemia / Infarction
subject: Tissue characterisation
subject: Prospective
subject: Observational
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Conventional bright blood late gadolinium enhancement (BB-LGE) imaging is a routine cardiovascular magnetic resonance (CMR) technique offering excellent contrast between areas of LGE and normal myocardium. However, contrast between LGE and blood is...
title: Electromagnetic navigation system for CT-guided biopsies compared with conventional CT guidance
Creators: name: Tortora, Silvia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Observational
subject: Retrospective
subject: Neoplasia
subject: Cancer
subject: Biopsy
subject: CT
subject: Lung
subject: Bones
subject: Abdomen
subject: Interventional Radiology

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Image guided biopsies are nowadays more and more applied in the diagnosis of a wide variety of disease.Different imaging modalities are used to guide the biopsy needle through the body to the target, computed tomography (CT), ultrasound (US) and...
Joint Optimization of Uplink Power and Computational Resources in Mobile Edge Computing-Enabled Cell-Free Massive MIMO
Creators: name: Interdonato, Giovanni
name: Buzzi, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The coupling of cell-free massive MIMO (CF-mMIMO) with Mobile Edge Computing (MEC) is investigated in this paper. A MEC-enabled CF-mMIMO architecture implementing a distributed user-centric approach both from the radio and the computational resource allocation perspective is proposed. A multi-objective optimization problem (MOOP) for the joint allocation of radio and remote computational resources is formulated, aimed at striking an optimal balance between total uplink power minimization and sum spectral efficiency maximization, under resource budget and latency constraints. In order to solve such a challenging non-convex problem, we convert the MOOP to an equivalent single-objective optimization problem (SOOP) through the weighted sum method and propose an iterative algorithm based on alternating optimization and sequential convex programming, along with an alternative heuristic resource allocation for distributed networks. Finally, we provide a detailed performance comparison between the proposed MEC-enabled CF-mMIMO architecture with its co-located counterpart, and its small-cell implementation. Numerical results reveal the effectiveness of the proposed resource allocation scheme, under different access point selection strategies, and the natural suitability of CF-mMIMO in supporting computation-offloading applications with benefits over users' transmit power and energy consumption, the effective latency experienced, and the computation offloading efficiency.
description: This paper has been published in IEEE Transactions on Communications on November 23, 2023. {\copyright} 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses
Doing well in Canada : a critical incident study of immigrants' experiences
Creators: name: Erlebach, Anne Carolyn
Publisher: name: University of British Columbia
Year: 2011

description: In response to Canada’s shrinking labour force, experts are calling for a more diverse, flexible, adaptable workforce. Many recommend that employers hire immigrants. However, employers may not recognize immigrants’ qualifications or experience. Well educated, experienced immigrants often resort to low paying, unskilled jobs. Guided by a positive psychology perspective, the main focus of this qualitative study was to 1) explore the changes inherent in immigration and challenges to employment that immigrants may face within the first year of their arrival, 2) investigate the strategies, incidents and factors that helped and hindered immigrants who self identified as doing well with these changes and challenges and 3) determine whether participants have always handled change well. Open-ended interviews were conducted with 17 new immigrants to Canada. Conventional content analysis was employed to develop themes from the context data collected. The Enhanced Critical Incident Technique was used to collect, identify, extract and analyze helping and hindering incidents, as well as a list of what participants wished they had or could have in the future in order to do well. A total of 273 helping incidents, 54 hindering incidents and 59 wish list items were extracted. Ten helping, hindering and wish list categories emerged: 1) Taking Action, 2) Personal Qualities, 3) Life in Canada, 4) Work and Life Experience, Skills and Knowledge, 5) Social Support, 6) Beliefs and Perspectives, 7) Preparation and Research, 8) Government/Agency Support, 9) Plans and Goals, and 10) Financial Support. These results suggest it is possible for new immigrants to do well with the significant life and work related changes and challenges that are embedded in the Canadian immigration experience. Discussion includes participants’ stories as living exemplars of a positive, proactive approach to acculturation, the roles that values and Canadian society played in participants’ doing well, and what coping and doing well may mean to newcomers. Study limitations are discussed along with implications for future research. Implications and recommendations for counselling practice are presented. Finally, policy recommendations are made concerning new immigrants’ employment situation.
"It's Like Being in a Labyrinth": Hispanic Immigrants' Perceptions of Depression and Attitudes Toward Treatments
Creators: name: Cabassa, Leopoldo J.
name: Lester, Rebecca
name: Zayas, Luis H.
Publisher: name: Columbia University
Year: 2007
Subjects: Mental health
Hispanic Americans

description: This study aimed to describe Hispanic immigrants' perceptions of depression and attitudes toward treatments and to examine how demographics, acculturation, clinical factors, and past service use were associated with their perceptions and attitudes. A convenience sample of 95 Hispanic immigrant patients was presented a vignette depicting an individual with major depression. Structured interviews that included standardized instruments and open-ended questions were used to query patients about their views of depression and its treatments. Findings showed that Hispanic immigrants perceived depression as a serious condition caused by interpersonal and social factors. Consistent with existing literature, most patients endorsed positive attitudes toward depression treatments yet reported apprehensions toward antidepressants. Demographic factors, acculturation, depressive symptoms, and past mental health service use were related to patients' views of depression and attitudes toward care. This study emphasizes the need to incorporate Hispanic immigrants' perceptions and attitudes into depression treatments.
การนำเสนอผลการวิจัยเชิงคุณภาพ
Creators: name: วรรณวิชนี ถนอมชาติ
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2563
Subjects: การวิจัยเชิงคุณภาพ, การออกแบบการวิจัย, การนำเสนอผลการวิจัย

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 14, 4, 1-13
title: Kinematic wave technique applied to hydrologic distributed modeling using stationary storm events: an application to synthetic rectangular basins and an actual watershed
title: Hydrology days 2008
titleType: AlternativeTitle
title: AGU hydrology days 2008
titleType: AlternativeTitle
Creators: name: Shultz, Michael J.
name: Crosby, Ernest C.
name: McEnery, John A.
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2008

description: 2008 annual AGU hydrology days was held at Colorado State University on March 26 - March 28, 2008.
description: Includes bibliographical references.
description: The purpose of this investigation was to evaluate the use of the kinematic wave technique as applied to hydrologic distributed modeling. Distributed models were developed for several artificial rectangular basins and an actual drainage basin using the U.S. Geological Survey Modular Modeling System. Distributed rainfall was applied to the selected basins in the form of stationary storm events. Impervious watershed conditions were assumed for each simulation. The kinematic wave technique was used to route both overland and channel flow. The distributed rainfall was applied as three individual cases over equal areas of the upper, middle, and lower sections of both the synthetic rectangular basins and the actual drainage basin (Cowleech Fork Sabine River near Greenville, Texas). Hydrologic simulations were conducted for each case and the hydrologic responses, as identified by peak flow and overall shape of the hydrographs at the basin outlets, were compared. Both peak flow and hydrograph shapes were similar. No appreciable hydrograph attenuation occurred. Distributed modeling has great potential for the advancement of the hydrologic sciences. Knowledge gained from this investigation may be useful in determining the practical applicability of the kinematic wave technique for use in distributed models.
Singlet-Doublet Dark Matter
Creators: name: Cohen, Timothy
name: Kearney, John
name: Pierce, Aaron
name: Tucker-Smith, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In light of recent data from direct detection experiments and the Large Hadron Collider, we explore models of dark matter in which an SU(2) doublet is mixed with a Standard Model singlet. We impose a thermal history. If the new particles are fermions, this model is already constrained due to null results from XENON100. We comment on remaining regions of parameter space and assess prospects for future discovery. We do the same for the model where the new particles are scalars, which at present is less constrained. Much of the remaining parameter space for both models will be probed by the next generation of direct detection experiments. For the fermion model, DeepCore may also play an important role.
description: 32 pages, 10 figures; v2 minor changes, references added
title: Audit of reporting and outcomes of acute whole spine MRI for suspected malignancy with spinal involvement
Creators: name: Patel, Virjen
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Oncologic Imaging
subject: Neuroradiology spine
subject: Oncology
subject: MR
subject: Diagnostic procedure
subject: Education
subject: Outcomes analysis
subject: Cancer
subject: Education and training
subject: Outcomes
subject: Retrospective
subject: Not applicable
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Spinal column metastases are estimated to occur in 3-5% of all cancer patients [1]. 50% of these arise from patients with lung, breast and prostate primary malignancies. Metastatic spinal cord compression (MSCC) is a recognised complication of...
Maximal CP violation in lepton mixing from a model with Delta(27) flavour symmetry
Creators: name: Ferreira, P. M.
name: Grimus, W.
name: Lavoura, L.
name: Ludl, P. O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a simple mechanism which enforces |U_{mu j}| = | U_{tau j}| forall j = 1,2,3 in the lepton mixing matrix U. This implies maximal atmospheric neutrino mixing and a maximal CP-violating phase but does not constrain the reactor mixing angle theta_{13}. We implement the proposed mechanism in two renormalizable seesaw models which have features strongly resembling those of models based on a flavour symmetry group Delta(27). Among the predictions of the models, there is a determination, although ambiguous, of the absolute neutrino mass scale, and a stringent correlation between the absolute neutrino mass scale and the effective Majorana mass in neutrinoless double-beta decay.
description: 16 pages, 4 figures, some references and clarifications added, version for publication in JHEP
Mantle thermal pulses below the Mid-Atlantic Ridge and temporal variations in the formation of oceanic lithosphere
Creators: name: Bonatti, Enrico
name: Ligi, Marco
name: Brunelli, Daniele
name: Cipriani, Anna
name: Fabretti, Paola
name: Ferrante, Valentina
name: Gasperini, Luca
name: Ottolini, Luisa
Publisher: name: Columbia University
Year: 2003
Subjects: Submarine geology

description: A 20-Myr record of creation of oceanic lithosphere is exposed along a segment of the central Mid-Atlantic Ridge on an uplifted sliver of lithosphere. The degree of melting of the mantle that is upwelling below the ridge, estimated from the chemistry of the exposed mantle rocks, as well as crustal thickness inferred from gravity measurements, show oscillations of 3–4 Myr superimposed on a longer-term steady increase with time. The time lag between oscillations of mantle melting and crustal thickness indicates that the mantle is upwelling at an average rate of 25 mm yr-1, but this appears to vary through time. Slow-spreading lithosphere seems to form through dynamic pulses of mantle upwelling and melting, leading not only to along-axis segmentation but also to across-axis structural variability. Also, the central Mid-Atlantic Ridge appears to have become steadily hotter over the past 20 Myr, possibly owing to north–south mantle flow.
title: Salt Caverns for Underground Hydrogen Storage
Creators: name: Commonwealth Of Australia (Geoscience Australia)
name: Bulloch, R.
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2025
Subjects: subject: salt storage
subject: Underground Salt Storage Exploration
subject: Hydrogen Storage
subject: Resource geoscience

description: Geoscience Australia, part of the Australian Government, is the nation’s trusted source of information on Australia’s Earth sciences. As part of ongoing investigations into the potential of hydrogen production and storage in Australia, Geoscience Australia has been using extensive geoscientific data to develop maps of salt bodies that may be suitable to store hydrogen.

This information booklet covers common questions about underground salt cavern storage in Australia.

The target audience is land-connected stakeholders such as landholders and managers.
Universal Order Statistics of Random Walks
Creators: name: Schehr, Gregory
name: Majumdar, Satya N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study analytically the order statistics of a time series generated by the successive positions of a symmetric random walk of n steps with step lengths of finite variance σ^2. We show that the statistics of the gap d_{k,n}=M_{k,n} -M_{k+1,n} between the k-th and the (k+1)-th maximum of the time series becomes stationary, i.e, independent of n as n\to \infty and exhibits a rich, universal behavior. The mean stationary gap (in units of σ) exhibits a universal algebraic decay for large k, /σ\sim 1/\sqrt{2πk}, independent of the details of the jump distribution. Moreover, the probability density (pdf) of the stationary gap exhibits scaling, Proba.(d_{k,\infty}=δ)\simeq (\sqrt{k}/σ) P(δ\sqrt{k}/σ), in the scaling regime when δ\sim \simeq σ/\sqrt{2πk}. The scaling function P(x) is universal and has an unexpected power law tail, P(x) \sim x^{-4} for large x. For δ\gg the scaling breaks down and the pdf gets cut-off in a nonuniversal way. Consequently, the moments of the gap exhibit an unusual multi-scaling behavior.
description: 5 pages, 3 figures. Revised version, typos corrected. Accepted for publication in Physical Review Letters
Understanding Young Women's Marriage Decisions: The Role of Labor and Marriage Market Conditions
Creators: name: Blau, Francine D.
name: Kahn, Lawrence M.
name: Waldfogel, Jane
Publisher: name: Columbia University
Year: 2000
Subjects: Labor economics

description: Using the 1970, 1980, and 1990 Censuses, the authors investigate the impact of labor and marriage market conditions on the incidence of marriage of young women (age 16-24). They first estimate the effects on marriage of personal characteristics and Metropolitan Statistical Area (MSA) indicators, separately by race and education group. They then regress the first-stage MSA effects on MSA-level labor and marriage market conditions and welfare benefits, taking account of fixed effects and time trends specific to each MSA. Better female labor markets, worse female marriage markets, and worse male labor markets are found to lower marriage rates for whites in all education groups. Results for these variables for blacks are sensitive to estimation technique, although stronger results are obtained for an older age group (25-34). While welfare benefits have a negative effect in cross-sectional analyses, the association becomes considerably weaker in fixed effects specifications.
Social media's influence on political engagement: examining the use of facebook and twitter in Alberta
Creators: name: Rontynen, Christina Irene Paula
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 153-159
description: A few pages are in colour.
description: Includes copy of ethics approval. Original copy with original Partial Copyright Licence.
description: This thesis explores social media, particularly Facebook and Twitter, and its ability to effectively engage individuals in political conversations online. The broad goal is to examine online conversations to find out if they can transform online participants from private individuals to public, politically engaged citizens. Two case studies were chosen from the province of Alberta: Bill 44 and Bill 50. Both pieces of legislation were discussed in depth online, and produced two different attitudes and outcomes. The case study of Bill 50 showed that a top down orchestrated conversation online does not cultivate feelings of political engagement. The Bill 44 case study showed that grassroots conversations can facilitate perceptions of political engagement. Through the analysis of online content from Facebook and Twitter and through focus groups five themes developed: membership, frequency and relevance in postings, connections to more traditional communication mediums and encouragement for offline participation. These themes are characteristics that are central to political engagement. When these characteristics are present in an online conversation a private individual can become engaged and passionate about a political issue. This thesis gives concrete examples to back up literature surrounding electronic democracy and the online public sphere. The mass use of social media has given society a space to gather and discuss the issues they use to in the physical public sphere. The public is being given the option to participate in ways they could not before. This research provides insight on how Albertans used Facebook and Twitter to engage in online political conversations and how social media could be harnessed to further engage citizens in an online public sphere.
Investigating the usefulness of Quantum Blur
Creators: name: Wootton, James R.
name: Pfaffhauser, Marcel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Emerging Technologies (cs.ET)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Though some years remain before quantum computation can fully outperform conventional computation, it already provides resources that can be used for exploratory purposes in various fields. This includes certain tasks for procedural generation in computer games, music and art. The so-called `Quantum Blur' method represents the first step on this journey, providing a simple proof-of-principle example of how quantum software can be useful in these areas today. Here we analyse the `Quantum Blur' method and compare it to conventional blur effects. This investigation was guided by discussions with the most prominent user of the method, to determine which features were found most useful. In particular we determine how these features depend on the quantum phenomena of superposition and entanglement.
Dimethyl sulfide and aerosol sulfate in the arctic atmosphere
Creators: name: Rempillo, Ofelia Tampis
Publisher: name: University of Calgary
Year: 2011

description: Bibliography: p. 127-137
description: Dimethyl sulfide (DMS) and its oxidation products, which have been proposed to provide a climate feedback mechanism by affecting aerosol and cloud radiative properties, were measured during onboard sampling campaigns in the Arctic in the Fall of 2007 and 2008. DMS concentrations were found to be localized with highly variable concentrations ranging from below detection limit (0.3 nmol/m3) to 14 nmol/m3. DMS flux was calculated based on surface water measurements conducted in open waters and yielded an average of 0.7 ?mol/m2/d along Baffin Bay. DMS oxidation products, sulfur dioxide (SO2) , methane sulfonic acid (MSA), and sulfate (SO/ -) in aerosols were also measured. Concentrations of atmospheric sulfur compounds during the campaign were [SO2] = 2.7- 135 nmol/m3 (2007) and 0.28-27 nmol/m3 (2008), [MSA] = 0.03-0.07 nmol/m3 (2007) and 0.02-0.14 (2008), and non-seasalt sulfate [nSS-So/-] = 0.5-7.0 nmol/m3 (2007) and 0.01-2.0 nmol/m3 (2008). Median daily biogenic SO2 and so/ - concentrations obtained from stable isotope apportionment techniques were found to be approximately 0-105 nmol/m3 and 0-1. 7 nmol/m3 respectively for 2007 and approximately 0-15 nmol/m3 and 0-0.4 nmol/m3 respectively for 2008. Applying conditions for significant new aerosol formation given in Pirjola et al. (1999), the study shows that sufficient biogenic SO2 is released from DMS oxidation to form new aerosols in clean air conditions. Pre-existing aerosols act as an additional condensation sink that prevents new aerosol formation in air parcels polluted by ship stack emissions. These results suggest that the predicted increase in primary productivity and DMS marine emissions could significantly affect the climate regionally. However, an increase in ship traffic would decrease locally the cooling effect of DMS emissions.
Spatially Dependent Parameter Estimation and Nonlinear Data Assimilation by Autosynchronization of a System of Partial Differential Equations
Creators: name: Kramer, Sean
name: Bollt, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Given multiple images that describe chaotic reaction-diffusion dynamics, parameters of a PDE model are estimated using autosynchronization, where parameters are controlled by synchronization of the model to the observed data. A two-component system of predator-prey reaction-diffusion PDEs is used with spatially dependent parameters to benchmark the methods described. Applications to modelling the ecological habitat of marine plankton blooms by nonlinear data assimilation through remote sensing is discussed.
title: Quantification of pancreas surface lobularity on CT: a feasibility study in the normal pancreas
Creators: name: Calandra, Alberto
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Retrospective
subject: Epidemiology
subject: Computer Applications-General
subject: CT
subject: Pancreas
subject: Computer applications
subject: Abdomen
subject: Abdominal Viscera

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To assess the feasibility and reproducibility of pancreatic surface lobularity (PSL) quantification derived from abdominal CT in a population of patients free of pancreatic...
CLASH: New Multiple-Images Constraining the Inner Mass Profile of MACS J1206.2-0847
Creators: name: Zitrin, A.
name: Rosati, P.
name: Nonino, M.
name: Grillo, C.
name: Postman, M.
name: Coe, D.
name: Seitz, S.
name: Eichner, T.
name: Broadhurst, T.
name: Jouvel, S.
name: Balestra, I.
name: Mercurio, A.
name: Scodeggio, M.
name: Benítez, N.
name: Bradley, L.
name: Ford, H.
name: Host, O.
name: Jimenez-Teja, Y.
name: Koekemoer, A.
name: Zheng, W.
name: Bartelmann, M.
name: Bouwens, R.
name: Czoske, O.
name: Donahue, M.
name: Graur, O.
name: Graves, G.
name: Infante, L.
name: Jha, S.
name: Kelson, D.
name: Lahav, O.
name: Lazkoz, R.
name: Lemze, D.
name: Lombardi, M.
name: Maoz, D.
name: McCully, C.
name: Medezinski, E.
name: Melchior, P.
name: Meneghetti, M.
name: Merten, J.
name: Molino, A.
name: Moustakas, L. A.
name: Ogaz, S.
name: Patel, B.
name: Regoes, E.
name: Riess, A.
name: Rodney, S.
name: Umetsu, K.
name: Van der Wel, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a strong-lensing analysis of the galaxy cluster MACS J1206.2-0847 ($z$=0.44) using UV, Optical, and IR, HST/ACS/WFC3 data taken as part of the CLASH multi-cycle treasury program, with VLT/VIMOS spectroscopy for some of the multiply-lensed arcs. The CLASH observations, combined with our mass-model, allow us to identify 47 new multiply-lensed images of 12 distant sources. These images, along with the previously known arc, span the redshift range $1\la z\la5.5$, and thus enable us to derive a detailed mass distribution and to accurately constrain, for the first time, the inner mass-profile of this cluster. We find an inner profile slope of $d\log Σ/d\log θ\simeq -0.55\pm 0.1$ (in the range [1\arcsec, 53\arcsec], or $5\la r \la300$ kpc), as commonly found for relaxed and well-concentrated clusters. Using the many systems uncovered here we derive credible critical curves and Einstein radii for different source redshifts. For a source at $z_{s}\simeq2.5$, the critical curve encloses a large area with an effective Einstein radius of $θ_{E}=28\pm3\arcsec$, and a projected mass of $1.34\pm0.15\times10^{14} M_{\odot}$. From the current understanding of structure formation in concordance cosmology, these values are relatively high for clusters at $z\sim0.5$, so that detailed studies of the inner mass distribution of clusters such as MACS J1206.2-0847 can provide stringent tests of the $Λ$CDM paradigm.
description: 7 pages, 1 table, 4 figures; submitted to ApJ Letters; V3: minor corrections
title: Spatial modeling using remote sensing, GIS, and field data to assess crop yield and soil salinity
title: Hydrology days 2004
titleType: AlternativeTitle
title: AGU hydrology days 2004
titleType: AlternativeTitle
Creators: name: Eldeiry, Ahmed
name: Garcia, Luis
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2004

description: 24th annual AGU hydrology days was held at Colorado State University on March 10-12, 2004.
description: Includes bibliographical references.
description: A comprehensive salinity monitoring program has been conducted in a portion of the Arkansas Valley in southeastern Colorado from 1999 to the present. This area was selected for study because it provides a good illustration of a salinity-affected area. The main objective of this presentation is to utilize spatial statistical modeling using information from remote sensing, GIS, GPS, along with field data to develop salinity maps and predict yield. The approach presented in this paper involves integrating remotely sensed data with topographical data (elevation, slope, and aspect) and field data (water table fluctuation, groundwater salinity, soil texture, yield data, and soil salinity) to establish and validate the appropriate spatial techniques to accurately predict crop yield in relation to soil salinity. For the field scale study, several fields were selected to represent different irrigation systems, soil types, and crop patterns. In each field, 7 to 15 wells were installed. At these fields, water table depth, groundwater salinity, soil salinity, and yield samples are collected regularly during the growing season. In addition to field data collection, a satellite image from IKONOS on July 11 was acquired. It has four bands (blue, green, red, and infrared) with a 4-meter spatial resolution. In this study, trend surface models, which describe the large-scale spatial variability, have been developed based on the lowest values Akaike Information Criterion Corrected (AICC) and high R2. P-Value of each related variable and for all the related variables together should be less than 0.05 to guarantee a strong relation among the variables. Also, P-Value from Moran should be greater than 0.05 to guarantee that there is no autocorrelation among the residuals.
Uniform foliations with Reeb components
Creators: name: Lema, Joaquín
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: A foliation on a compact manifold is uniform if each pair of leaves of the induced foliation on the universal cover are at finite Hausdorff distance from each other. We study uniform foliations with Reeb components. We give examples of such foliations on a family of closed $3-$manifolds with infinite fundamental group. Furthermore, we prove some results concerning the behavior of a uniform foliation with Reeb components on general $3-$manifolds.
description: 13 pages, 7 figures; minor corrections suggested by the referee
Participation and Development: Perspectives from the Comprehensive Development Paradigm
Creators: name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 2002
Subjects: Economics

description: This paper investigates the relationship between economic and social development. Contrary to the view of those who believe in the existence of a tradeoff between democracy and growth, the paper contends that consensus-building, open dialog and the promotion of an active civil society are key ingredients to long-term sustainable development. Development is a participatory process. "Best practices" or reforms that are imposed on a country through conditionality may very well fail to produce lasting change. They will tend to undermine people's incentives to develop their own capacities and weaken their confidence in using their own intelligence. Success in a knowledge-based economy requires a highly-educated citizenry, involved in the process of shaping and adapting ideas and policies. Participation and democracy in turn call for greater transparency and accountability in both the corporate and government sectors.
Andromeda XXIX: A New Dwarf Spheroidal Galaxy 200kpc from Andromeda
Creators: name: Bell, Eric F.
name: Slater, Colin T.
name: Martin, Nicolas F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of a new dwarf galaxy, Andromeda XXIX, using data from the recently-released Sloan Digital Sky Survey DR8, and confirmed by Gemini North telescope Multi-Object Spectrograph imaging data. And XXIX appears to be a dwarf spheroidal galaxy, separated on the sky by a little more than 15 degrees from M31, with a distance inferred from the tip of the red giant branch of 730kpc+/-75kpc, corresponding to a three dimensional separation from M31 of between 205kpc and 227kpc (close to M31's virial radius). Its absolute magnitude, as determined by comparison to the red giant branch luminosity function of the Draco dwarf spheroidal, is M_V = -8.3+/-0.4. And XXIX's stellar populations appear very similar to Draco's; consequently, we estimate a metallicity for And XXIX of [Fe/H]\sim-1.8. The half-light radius of And XXIX is 360pc+/-60pc and its ellipticity is 0.35+/-0.06, typical of dwarf satellites of the Milky Way and M31 at this absolute magnitude range.
description: Astrophysical Journal Letters, in press. 4 pages, 3 figures
title: Shoulder labral tears. The value of the MRI before the arthro-MRI.
Creators: name: Berral Santana, Alicia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Musculoskeletal
subject: Musculoskeletal joint
subject: Musculoskeletal system
subject: MR
subject: Arthrography
subject: Diagnostic procedure
subject: Athletic injuries
subject: Trauma
subject: Retrospective
subject: Observational
subject: Performed at one institution

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The most mobile joint of the body is the shoulder joint, so it is frequent to find dislocation, luxation or even fractures at this level, especially in young patients. The glenohumeral joint is the most important component of the shoulder girdle and...
Universality class of quantum criticality for strongly repulsive spin-1 bosons with antiferromagnetic spin-exchange interaction
Creators: name: Kuhn, C. C. N.
name: Guan, X. W.
name: Foerster, A.
name: Batchelor, M. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Using the thermodynamic Bethe ansatz equations we study the quantum phase diagram, thermodynamics and criticality of one-dimensional spin-1 bosons with strongly repulsive density-density and antiferromagnetic spin-exchange interactions. We analytically derive a high precision equation of state from which the Tomonaga-Luttinger liquid physics and quantum critical behavior of the system are computed. We obtain explicit forms for the scaling functions near the critical points yielding the dynamical exponent $z=2$ and correlation length exponent $ν=1/2$ for the quantum phase transitions driven by either the chemical potential or the magnetic field. Consequently, we further demonstrate that quantum criticality of the system can be mapped out from the finite temperature density and magnetization profiles of the 1D trapped gas. Our results provide the physical origin of quantum criticality in a 1D many-body system beyond the Tomonaga-Luttinger liquid description.
description: 12 pages, 11 figures
The Role of the IMF
Creators: name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 2002
Subjects: Economics

description: Explains the proper role of the International Monetary Fund to help countries address financial crisis when they break. Criticism on the IMF for its failure to manage and deal with the 1997 financial crisis that crippled many economies in Asia and threaten the global financial system; Forecast on the recovery of the United States economy.
Three-loop gluon scattering in QCD and the gluon Regge trajectory
Creators: name: Caola, Fabrizio
name: Chakraborty, Amlan
name: Gambuti, Giulio
name: von Manteuffel, Andreas
name: Tancredi, Lorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the three-loop helicity amplitudes for the scattering of four gluons in QCD. We employ projectors in the 't Hooft-Veltman scheme and construct the amplitudes from a minimal set of physical building blocks, which allows us to keep the computational complexity under control. We obtain relatively compact results that can be expressed in terms of harmonic polylogarithms. In addition, we consider the Regge limit of our amplitude and extract the gluon Regge trajectory in full three-loop QCD. This is the last missing ingredient required for studying single-Reggeon exchanges at next-to-next-to-leading logarithmic accuracy.
description: 12 pages, 1 figure; v2: minor corrections
3D imaging for outdoor workspace monitoring
Creators: name: Haghighat-Kashani, Ali
Publisher: name: University of British Columbia
Year: 2011

description: This research investigates the use of laser scanners to provide fast and accurate workspace information on excavators. The thesis first evaluates the use of laser scanners to track a mining shovel's dipper position, in order to extract its arm geometry variables in real-time. The low spatial resolution of laser scanners and the need for accurate initialization challenge the reliability and accuracy of laser-based object tracking methods. The first contribution of this work is in introducing a dipper tracking algorithm that provides an accurate, reliable and real-time performance. To accomplish this task, the proposed algorithm uses the shovel dipper's kinematic constraints and pose history in a Particle Filter to perform an efficient global search in the workspace. The result is then used to initialize an Iterative Closest Point algorithm that uses a geometrical model of the dipper to perform a local search and increase the accuracy of the positioning estimate. In the experiments performed on a mining shovel, the algorithm reliably tracked the dipper in real-time, and obtained a mean dipper positioning error of 6.7cm – 0.3% of the dipper range. In contrast to arm geometry, most workspace information cannot be extracted using a single laser scanner since it cannot scan the entire scene at a real-time frame-rate. In addition to having a real-time frame-rate, 3D images have to be accurate and reliable to be useful for workspace variable extraction. Hence, this work investigates whether and how such images can be provided using a laser scanner and an intensity camera. The slow and sparse results of depth sensors (e.g., laser scanner) make them ineffective when used alone. This work proposes a method for fusing depth sensors with an intensity camera to capture accurate and dense 3D images. The proposed fusion uses a super-resolution algorithm based on bilateral filtering to upsample small depth sensor images, with the help of high-resolution images from an intensity camera. The proposed method obtains more accurate results compared to the literature – an error reduction of up to 6.8x based on the Middlebury benchmark – with sharper and more realistic edge definition.
title: Transhepatic intraluminal brachytherapy combined with biliary stenting in the treatment of unresectable malignant biliary obstruction
Creators: name: Di Stefano, Giuseppina
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Observational
subject: Retrospective
subject: Multidisciplinary cancer care
subject: Cancer
subject: Stents
subject: Brachytherapy
subject: Fluoroscopy
subject: CT
subject: Biliary Tract / Gallbladder
subject: Interventional Radiology

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Cholangiocarcinoma (CCA) is the most common biliary tract malignancy and the second most common primary hepatic tumor after hepatocellular carcinoma with poor prognosis and low therapy response [1]. Surgical resection is the primary modality of...